diff options
957 files changed, 35336 insertions, 21713 deletions
diff --git a/Documentation/ABI/testing/sysfs-devices-power b/Documentation/ABI/testing/sysfs-devices-power index 6123c523bfd7..7628cd1bc36a 100644 --- a/Documentation/ABI/testing/sysfs-devices-power +++ b/Documentation/ABI/testing/sysfs-devices-power @@ -77,3 +77,91 @@ Description: devices this attribute is set to "enabled" by bus type code or device drivers and in that cases it should be safe to leave the default value. + +What: /sys/devices/.../power/wakeup_count +Date: September 2010 +Contact: Rafael J. Wysocki <rjw@sisk.pl> +Description: + The /sys/devices/.../wakeup_count attribute contains the number + of signaled wakeup events associated with the device. This + attribute is read-only. If the device is not enabled to wake up + the system from sleep states, this attribute is empty. + +What: /sys/devices/.../power/wakeup_active_count +Date: September 2010 +Contact: Rafael J. Wysocki <rjw@sisk.pl> +Description: + The /sys/devices/.../wakeup_active_count attribute contains the + number of times the processing of wakeup events associated with + the device was completed (at the kernel level). This attribute + is read-only. If the device is not enabled to wake up the + system from sleep states, this attribute is empty. + +What: /sys/devices/.../power/wakeup_hit_count +Date: September 2010 +Contact: Rafael J. Wysocki <rjw@sisk.pl> +Description: + The /sys/devices/.../wakeup_hit_count attribute contains the + number of times the processing of a wakeup event associated with + the device might prevent the system from entering a sleep state. + This attribute is read-only. If the device is not enabled to + wake up the system from sleep states, this attribute is empty. + +What: /sys/devices/.../power/wakeup_active +Date: September 2010 +Contact: Rafael J. Wysocki <rjw@sisk.pl> +Description: + The /sys/devices/.../wakeup_active attribute contains either 1, + or 0, depending on whether or not a wakeup event associated with + the device is being processed (1). This attribute is read-only. + If the device is not enabled to wake up the system from sleep + states, this attribute is empty. + +What: /sys/devices/.../power/wakeup_total_time_ms +Date: September 2010 +Contact: Rafael J. Wysocki <rjw@sisk.pl> +Description: + The /sys/devices/.../wakeup_total_time_ms attribute contains + the total time of processing wakeup events associated with the + device, in milliseconds. This attribute is read-only. If the + device is not enabled to wake up the system from sleep states, + this attribute is empty. + +What: /sys/devices/.../power/wakeup_max_time_ms +Date: September 2010 +Contact: Rafael J. Wysocki <rjw@sisk.pl> +Description: + The /sys/devices/.../wakeup_max_time_ms attribute contains + the maximum time of processing a single wakeup event associated + with the device, in milliseconds. This attribute is read-only. + If the device is not enabled to wake up the system from sleep + states, this attribute is empty. + +What: /sys/devices/.../power/wakeup_last_time_ms +Date: September 2010 +Contact: Rafael J. Wysocki <rjw@sisk.pl> +Description: + The /sys/devices/.../wakeup_last_time_ms attribute contains + the value of the monotonic clock corresponding to the time of + signaling the last wakeup event associated with the device, in + milliseconds. This attribute is read-only. If the device is + not enabled to wake up the system from sleep states, this + attribute is empty. + +What: /sys/devices/.../power/autosuspend_delay_ms +Date: September 2010 +Contact: Alan Stern <stern@rowland.harvard.edu> +Description: + The /sys/devices/.../power/autosuspend_delay_ms attribute + contains the autosuspend delay value (in milliseconds). Some + drivers do not want their device to suspend as soon as it + becomes idle at run time; they want the device to remain + inactive for a certain minimum period of time first. That + period is called the autosuspend delay. Negative values will + prevent the device from being suspended at run time (similar + to writing "on" to the power/control attribute). Values >= + 1000 will cause the autosuspend timer expiration to be rounded + up to the nearest second. + + Not all drivers support this attribute. If it isn't supported, + attempts to read or write it will yield I/O errors. diff --git a/Documentation/ABI/testing/sysfs-power b/Documentation/ABI/testing/sysfs-power index 2875f1f74a07..194ca446ac28 100644 --- a/Documentation/ABI/testing/sysfs-power +++ b/Documentation/ABI/testing/sysfs-power @@ -99,9 +99,38 @@ Description: dmesg -s 1000000 | grep 'hash matches' + If you do not get any matches (or they appear to be false + positives), it is possible that the last PM event point + referred to a device created by a loadable kernel module. In + this case cat /sys/power/pm_trace_dev_match (see below) after + your system is started up and the kernel modules are loaded. + CAUTION: Using it will cause your machine's real-time (CMOS) clock to be set to a random invalid time after a resume. +What; /sys/power/pm_trace_dev_match +Date: October 2010 +Contact: James Hogan <james@albanarts.com> +Description: + The /sys/power/pm_trace_dev_match file contains the name of the + device associated with the last PM event point saved in the RTC + across reboots when pm_trace has been used. More precisely it + contains the list of current devices (including those + registered by loadable kernel modules since boot) which match + the device hash in the RTC at boot, with a newline after each + one. + + The advantage of this file over the hash matches printed to the + kernel log (see /sys/power/pm_trace), is that it includes + devices created after boot by loadable kernel modules. + + Due to the small hash size necessary to fit in the RTC, it is + possible that more than one device matches the hash, in which + case further investigation is required to determine which + device is causing the problem. Note that genuine RTC clock + values (such as when pm_trace has not been used), can still + match a device and output it's name here. + What: /sys/power/pm_async Date: January 2009 Contact: Rafael J. Wysocki <rjw@sisk.pl> diff --git a/Documentation/DocBook/genericirq.tmpl b/Documentation/DocBook/genericirq.tmpl index 1448b33fd222..fb10fd08c05c 100644 --- a/Documentation/DocBook/genericirq.tmpl +++ b/Documentation/DocBook/genericirq.tmpl @@ -28,7 +28,7 @@ </authorgroup> <copyright> - <year>2005-2006</year> + <year>2005-2010</year> <holder>Thomas Gleixner</holder> </copyright> <copyright> @@ -100,6 +100,10 @@ <listitem><para>Edge type</para></listitem> <listitem><para>Simple type</para></listitem> </itemizedlist> + During the implementation we identified another type: + <itemizedlist> + <listitem><para>Fast EOI type</para></listitem> + </itemizedlist> In the SMP world of the __do_IRQ() super-handler another type was identified: <itemizedlist> @@ -153,6 +157,7 @@ is still available. This leads to a kind of duality for the time being. Over time the new model should be used in more and more architectures, as it enables smaller and cleaner IRQ subsystems. + It's deprecated for three years now and about to be removed. </para> </chapter> <chapter id="bugs"> @@ -217,6 +222,7 @@ <itemizedlist> <listitem><para>handle_level_irq</para></listitem> <listitem><para>handle_edge_irq</para></listitem> + <listitem><para>handle_fasteoi_irq</para></listitem> <listitem><para>handle_simple_irq</para></listitem> <listitem><para>handle_percpu_irq</para></listitem> </itemizedlist> @@ -233,33 +239,33 @@ are used by the default flow implementations. The following helper functions are implemented (simplified excerpt): <programlisting> -default_enable(irq) +default_enable(struct irq_data *data) { - desc->chip->unmask(irq); + desc->chip->irq_unmask(data); } -default_disable(irq) +default_disable(struct irq_data *data) { - if (!delay_disable(irq)) - desc->chip->mask(irq); + if (!delay_disable(data)) + desc->chip->irq_mask(data); } -default_ack(irq) +default_ack(struct irq_data *data) { - chip->ack(irq); + chip->irq_ack(data); } -default_mask_ack(irq) +default_mask_ack(struct irq_data *data) { - if (chip->mask_ack) { - chip->mask_ack(irq); + if (chip->irq_mask_ack) { + chip->irq_mask_ack(data); } else { - chip->mask(irq); - chip->ack(irq); + chip->irq_mask(data); + chip->irq_ack(data); } } -noop(irq) +noop(struct irq_data *data)) { } @@ -278,12 +284,27 @@ noop(irq) <para> The following control flow is implemented (simplified excerpt): <programlisting> -desc->chip->start(); +desc->chip->irq_mask(); handle_IRQ_event(desc->action); -desc->chip->end(); +desc->chip->irq_unmask(); </programlisting> </para> - </sect3> + </sect3> + <sect3 id="Default_FASTEOI_IRQ_flow_handler"> + <title>Default Fast EOI IRQ flow handler</title> + <para> + handle_fasteoi_irq provides a generic implementation + for interrupts, which only need an EOI at the end of + the handler + </para> + <para> + The following control flow is implemented (simplified excerpt): + <programlisting> +handle_IRQ_event(desc->action); +desc->chip->irq_eoi(); + </programlisting> + </para> + </sect3> <sect3 id="Default_Edge_IRQ_flow_handler"> <title>Default Edge IRQ flow handler</title> <para> @@ -294,20 +315,19 @@ desc->chip->end(); The following control flow is implemented (simplified excerpt): <programlisting> if (desc->status & running) { - desc->chip->hold(); + desc->chip->irq_mask(); desc->status |= pending | masked; return; } -desc->chip->start(); +desc->chip->irq_ack(); desc->status |= running; do { if (desc->status & masked) - desc->chip->enable(); + desc->chip->irq_unmask(); desc->status &= ~pending; handle_IRQ_event(desc->action); } while (status & pending); desc->status &= ~running; -desc->chip->end(); </programlisting> </para> </sect3> @@ -342,9 +362,9 @@ handle_IRQ_event(desc->action); <para> The following control flow is implemented (simplified excerpt): <programlisting> -desc->chip->start(); handle_IRQ_event(desc->action); -desc->chip->end(); +if (desc->chip->irq_eoi) + desc->chip->irq_eoi(); </programlisting> </para> </sect3> @@ -375,8 +395,7 @@ desc->chip->end(); mechanism. (It's necessary to enable CONFIG_HARDIRQS_SW_RESEND when you want to use the delayed interrupt disable feature and your hardware is not capable of retriggering an interrupt.) - The delayed interrupt disable can be runtime enabled, per interrupt, - by setting the IRQ_DELAYED_DISABLE flag in the irq_desc status field. + The delayed interrupt disable is not configurable. </para> </sect2> </sect1> @@ -387,13 +406,13 @@ desc->chip->end(); contains all the direct chip relevant functions, which can be utilized by the irq flow implementations. <itemizedlist> - <listitem><para>ack()</para></listitem> - <listitem><para>mask_ack() - Optional, recommended for performance</para></listitem> - <listitem><para>mask()</para></listitem> - <listitem><para>unmask()</para></listitem> - <listitem><para>retrigger() - Optional</para></listitem> - <listitem><para>set_type() - Optional</para></listitem> - <listitem><para>set_wake() - Optional</para></listitem> + <listitem><para>irq_ack()</para></listitem> + <listitem><para>irq_mask_ack() - Optional, recommended for performance</para></listitem> + <listitem><para>irq_mask()</para></listitem> + <listitem><para>irq_unmask()</para></listitem> + <listitem><para>irq_retrigger() - Optional</para></listitem> + <listitem><para>irq_set_type() - Optional</para></listitem> + <listitem><para>irq_set_wake() - Optional</para></listitem> </itemizedlist> These primitives are strictly intended to mean what they say: ack means ACK, masking means masking of an IRQ line, etc. It is up to the flow @@ -458,6 +477,7 @@ desc->chip->end(); <para> This chapter contains the autogenerated documentation of the internal functions. </para> +!Ikernel/irq/irqdesc.c !Ikernel/irq/handle.c !Ikernel/irq/chip.c </chapter> diff --git a/Documentation/DocBook/kernel-locking.tmpl b/Documentation/DocBook/kernel-locking.tmpl index a0d479d1e1dd..f66f4df18690 100644 --- a/Documentation/DocBook/kernel-locking.tmpl +++ b/Documentation/DocBook/kernel-locking.tmpl @@ -1645,7 +1645,9 @@ the amount of locking which needs to be done. all the readers who were traversing the list when we deleted the element are finished. We use <function>call_rcu()</function> to register a callback which will actually destroy the object once - the readers are finished. + all pre-existing readers are finished. Alternatively, + <function>synchronize_rcu()</function> may be used to block until + all pre-existing are finished. </para> <para> But how does Read Copy Update know when the readers are @@ -1714,7 +1716,7 @@ the amount of locking which needs to be done. - object_put(obj); + list_del_rcu(&obj->list); cache_num--; -+ call_rcu(&obj->rcu, cache_delete_rcu, obj); ++ call_rcu(&obj->rcu, cache_delete_rcu); } /* Must be holding cache_lock */ @@ -1725,14 +1727,6 @@ the amount of locking which needs to be done. if (++cache_num > MAX_CACHE_SIZE) { struct object *i, *outcast = NULL; list_for_each_entry(i, &cache, list) { -@@ -85,6 +94,7 @@ - obj->popularity = 0; - atomic_set(&obj->refcnt, 1); /* The cache holds a reference */ - spin_lock_init(&obj->lock); -+ INIT_RCU_HEAD(&obj->rcu); - - spin_lock_irqsave(&cache_lock, flags); - __cache_add(obj); @@ -104,12 +114,11 @@ struct object *cache_find(int id) { diff --git a/Documentation/RCU/checklist.txt b/Documentation/RCU/checklist.txt index 790d1a812376..0c134f8afc6f 100644 --- a/Documentation/RCU/checklist.txt +++ b/Documentation/RCU/checklist.txt @@ -218,13 +218,22 @@ over a rather long period of time, but improvements are always welcome! include: a. Keeping a count of the number of data-structure elements - used by the RCU-protected data structure, including those - waiting for a grace period to elapse. Enforce a limit - on this number, stalling updates as needed to allow - previously deferred frees to complete. - - Alternatively, limit only the number awaiting deferred - free rather than the total number of elements. + used by the RCU-protected data structure, including + those waiting for a grace period to elapse. Enforce a + limit on this number, stalling updates as needed to allow + previously deferred frees to complete. Alternatively, + limit only the number awaiting deferred free rather than + the total number of elements. + + One way to stall the updates is to acquire the update-side + mutex. (Don't try this with a spinlock -- other CPUs + spinning on the lock could prevent the grace period + from ever ending.) Another way to stall the updates + is for the updates to use a wrapper function around + the memory allocator, so that this wrapper function + simulates OOM when there is too much memory awaiting an + RCU grace period. There are of course many other + variations on this theme. b. Limiting update rate. For example, if updates occur only once per hour, then no explicit rate limiting is required, @@ -365,3 +374,26 @@ over a rather long period of time, but improvements are always welcome! and the compiler to freely reorder code into and out of RCU read-side critical sections. It is the responsibility of the RCU update-side primitives to deal with this. + +17. Use CONFIG_PROVE_RCU, CONFIG_DEBUG_OBJECTS_RCU_HEAD, and + the __rcu sparse checks to validate your RCU code. These + can help find problems as follows: + + CONFIG_PROVE_RCU: check that accesses to RCU-protected data + structures are carried out under the proper RCU + read-side critical section, while holding the right + combination of locks, or whatever other conditions + are appropriate. + + CONFIG_DEBUG_OBJECTS_RCU_HEAD: check that you don't pass the + same object to call_rcu() (or friends) before an RCU + grace period has elapsed since the last time that you + passed that same object to call_rcu() (or friends). + + __rcu sparse checks: tag the pointer to the RCU-protected data + structure with __rcu, and sparse will warn you if you + access that pointer without the services of one of the + variants of rcu_dereference(). + + These debugging aids can help you find problems that are + otherwise extremely difficult to spot. diff --git a/Documentation/RCU/stallwarn.txt b/Documentation/RCU/stallwarn.txt index 44c6dcc93d6d..862c08ef1fde 100644 --- a/Documentation/RCU/stallwarn.txt +++ b/Documentation/RCU/stallwarn.txt @@ -80,6 +80,24 @@ o A CPU looping with bottom halves disabled. This condition can o For !CONFIG_PREEMPT kernels, a CPU looping anywhere in the kernel without invoking schedule(). +o A CPU-bound real-time task in a CONFIG_PREEMPT kernel, which might + happen to preempt a low-priority task in the middle of an RCU + read-side critical section. This is especially damaging if + that low-priority task is not permitted to run on any other CPU, + in which case the next RCU grace period can never complete, which + will eventually cause the system to run out of memory and hang. + While the system is in the process of running itself out of + memory, you might see stall-warning messages. + +o A CPU-bound real-time task in a CONFIG_PREEMPT_RT kernel that + is running at a higher priority than the RCU softirq threads. + This will prevent RCU callbacks from ever being invoked, + and in a CONFIG_TREE_PREEMPT_RCU kernel will further prevent + RCU grace periods from ever completing. Either way, the + system will eventually run out of memory and hang. In the + CONFIG_TREE_PREEMPT_RCU case, you might see stall-warning + messages. + o A bug in the RCU implementation. o A hardware failure. This is quite unlikely, but has occurred diff --git a/Documentation/RCU/trace.txt b/Documentation/RCU/trace.txt index efd8cc95c06b..a851118775d8 100644 --- a/Documentation/RCU/trace.txt +++ b/Documentation/RCU/trace.txt @@ -125,6 +125,17 @@ o "b" is the batch limit for this CPU. If more than this number of RCU callbacks is ready to invoke, then the remainder will be deferred. +o "ci" is the number of RCU callbacks that have been invoked for + this CPU. Note that ci+ql is the number of callbacks that have + been registered in absence of CPU-hotplug activity. + +o "co" is the number of RCU callbacks that have been orphaned due to + this CPU going offline. + +o "ca" is the number of RCU callbacks that have been adopted due to + other CPUs going offline. Note that ci+co-ca+ql is the number of + RCU callbacks registered on this CPU. + There is also an rcu/rcudata.csv file with the same information in comma-separated-variable spreadsheet format. @@ -180,7 +191,7 @@ o "s" is the "signaled" state that drives force_quiescent_state()'s o "jfq" is the number of jiffies remaining for this grace period before force_quiescent_state() is invoked to help push things - along. Note that CPUs in dyntick-idle mode thoughout the grace + along. Note that CPUs in dyntick-idle mode throughout the grace period will not report on their own, but rather must be check by some other CPU via force_quiescent_state(). diff --git a/Documentation/cputopology.txt b/Documentation/cputopology.txt index f1c5c4bccd3e..902d3151f527 100644 --- a/Documentation/cputopology.txt +++ b/Documentation/cputopology.txt @@ -14,25 +14,39 @@ to /proc/cpuinfo. identifier (rather than the kernel's). The actual value is architecture and platform dependent. -3) /sys/devices/system/cpu/cpuX/topology/thread_siblings: +3) /sys/devices/system/cpu/cpuX/topology/book_id: + + the book ID of cpuX. Typically it is the hardware platform's + identifier (rather than the kernel's). The actual value is + architecture and platform dependent. + +4) /sys/devices/system/cpu/cpuX/topology/thread_siblings: internel kernel map of cpuX's hardware threads within the same core as cpuX -4) /sys/devices/system/cpu/cpuX/topology/core_siblings: +5) /sys/devices/system/cpu/cpuX/topology/core_siblings: internal kernel map of cpuX's hardware threads within the same physical_package_id. +6) /sys/devices/system/cpu/cpuX/topology/book_siblings: + + internal kernel map of cpuX's hardware threads within the same + book_id. + To implement it in an architecture-neutral way, a new source file, -drivers/base/topology.c, is to export the 4 attributes. +drivers/base/topology.c, is to export the 4 or 6 attributes. The two book +related sysfs files will only be created if CONFIG_SCHED_BOOK is selected. For an architecture to support this feature, it must define some of these macros in include/asm-XXX/topology.h: #define topology_physical_package_id(cpu) #define topology_core_id(cpu) +#define topology_book_id(cpu) #define topology_thread_cpumask(cpu) #define topology_core_cpumask(cpu) +#define topology_book_cpumask(cpu) The type of **_id is int. The type of siblings is (const) struct cpumask *. @@ -45,6 +59,9 @@ not defined by include/asm-XXX/topology.h: 3) thread_siblings: just the given CPU 4) core_siblings: just the given CPU +For architectures that don't support books (CONFIG_SCHED_BOOK) there are no +default definitions for topology_book_id() and topology_book_cpumask(). + Additionally, CPU topology information is provided under /sys/devices/system/cpu and includes these files. The internal source for the output is in brackets ("[]"). diff --git a/Documentation/feature-removal-schedule.txt b/Documentation/feature-removal-schedule.txt index 842aa9de84a6..5e2bc4ab897a 100644 --- a/Documentation/feature-removal-schedule.txt +++ b/Documentation/feature-removal-schedule.txt @@ -386,34 +386,6 @@ Who: Tejun Heo <tj@kernel.org> ---------------------------- -What: Support for VMware's guest paravirtuliazation technique [VMI] will be - dropped. -When: 2.6.37 or earlier. -Why: With the recent innovations in CPU hardware acceleration technologies - from Intel and AMD, VMware ran a few experiments to compare these - techniques to guest paravirtualization technique on VMware's platform. - These hardware assisted virtualization techniques have outperformed the - performance benefits provided by VMI in most of the workloads. VMware - expects that these hardware features will be ubiquitous in a couple of - years, as a result, VMware has started a phased retirement of this - feature from the hypervisor. We will be removing this feature from the - Kernel too. Right now we are targeting 2.6.37 but can retire earlier if - technical reasons (read opportunity to remove major chunk of pvops) - arise. - - Please note that VMI has always been an optimization and non-VMI kernels - still work fine on VMware's platform. - Latest versions of VMware's product which support VMI are, - Workstation 7.0 and VSphere 4.0 on ESX side, future maintainence - releases for these products will continue supporting VMI. - - For more details about VMI retirement take a look at this, - http://blogs.vmware.com/guestosguide/2009/09/vmi-retirement.html - -Who: Alok N Kataria <akataria@vmware.com> - ----------------------------- - What: Support for lcd_switch and display_get in asus-laptop driver When: March 2010 Why: These two features use non-standard interfaces. There are the diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt index 8dd7248508a9..02f21d9220ce 100644 --- a/Documentation/kernel-parameters.txt +++ b/Documentation/kernel-parameters.txt @@ -455,7 +455,7 @@ and is between 256 and 4096 characters. It is defined in the file [ARM] imx_timer1,OSTS,netx_timer,mpu_timer2, pxa_timer,timer3,32k_counter,timer0_1 [AVR32] avr32 - [X86-32] pit,hpet,tsc,vmi-timer; + [X86-32] pit,hpet,tsc; scx200_hrt on Geode; cyclone on IBM x440 [MIPS] MIPS [PARISC] cr16 @@ -2153,6 +2153,11 @@ and is between 256 and 4096 characters. It is defined in the file Reserves a hole at the top of the kernel virtual address space. + reservelow= [X86] + Format: nn[K] + Set the amount of memory to reserve for BIOS at + the bottom of the address space. + reset_devices [KNL] Force drivers to reset the underlying device during initialization. @@ -2165,6 +2170,11 @@ and is between 256 and 4096 characters. It is defined in the file in <PAGE_SIZE> units (needed only for swap files). See Documentation/power/swsusp-and-swap-files.txt + hibernate= [HIBERNATION] + noresume Don't check if there's a hibernation image + present during boot. + nocompress Don't compress/decompress hibernation images. + retain_initrd [RAM] Keep initrd memory after extraction rhash_entries= [KNL,NET] @@ -2435,6 +2445,10 @@ and is between 256 and 4096 characters. It is defined in the file disables clocksource verification at runtime. Used to enable high-resolution timer mode on older hardware, and in virtualized environment. + [x86] noirqtime: Do not use TSC to do irq accounting. + Used to run time disable IRQ_TIME_ACCOUNTING on any + platforms where RDTSC is slow and this accounting + can add overhead. turbografx.map[2|3]= [HW,JOY] TurboGraFX parallel port interface diff --git a/Documentation/kprobes.txt b/Documentation/kprobes.txt index 1762b81fcdf2..741fe66d6eca 100644 --- a/Documentation/kprobes.txt +++ b/Documentation/kprobes.txt @@ -542,9 +542,11 @@ Kprobes does not use mutexes or allocate memory except during registration and unregistration. Probe handlers are run with preemption disabled. Depending on the -architecture, handlers may also run with interrupts disabled. In any -case, your handler should not yield the CPU (e.g., by attempting to -acquire a semaphore). +architecture and optimization state, handlers may also run with +interrupts disabled (e.g., kretprobe handlers and optimized kprobe +handlers run without interrupt disabled on x86/x86-64). In any case, +your handler should not yield the CPU (e.g., by attempting to acquire +a semaphore). Since a return probe is implemented by replacing the return address with the trampoline's address, stack backtraces and calls diff --git a/Documentation/pcmcia/driver-changes.txt b/Documentation/pcmcia/driver-changes.txt index 26c0f9c00545..dd04361dd361 100644 --- a/Documentation/pcmcia/driver-changes.txt +++ b/Documentation/pcmcia/driver-changes.txt @@ -1,4 +1,29 @@ This file details changes in 2.6 which affect PCMCIA card driver authors: +* pcmcia_loop_config() and autoconfiguration (as of 2.6.36) + If struct pcmcia_device *p_dev->config_flags is set accordingly, + pcmcia_loop_config() now sets up certain configuration values + automatically, though the driver may still override the settings + in the callback function. The following autoconfiguration options + are provided at the moment: + CONF_AUTO_CHECK_VCC : check for matching Vcc + CONF_AUTO_SET_VPP : set Vpp + CONF_AUTO_AUDIO : auto-enable audio line, if required + CONF_AUTO_SET_IO : set ioport resources (->resource[0,1]) + CONF_AUTO_SET_IOMEM : set first iomem resource (->resource[2]) + +* pcmcia_request_configuration -> pcmcia_enable_device (as of 2.6.36) + pcmcia_request_configuration() got renamed to pcmcia_enable_device(), + as it mirrors pcmcia_disable_device(). Configuration settings are now + stored in struct pcmcia_device, e.g. in the fields config_flags, + config_index, config_base, vpp. + +* pcmcia_request_window changes (as of 2.6.36) + Instead of win_req_t, drivers are now requested to fill out + struct pcmcia_device *p_dev->resource[2,3,4,5] for up to four ioport + ranges. After a call to pcmcia_request_window(), the regions found there + are reserved and may be used immediately -- until pcmcia_release_window() + is called. + * pcmcia_request_io changes (as of 2.6.36) Instead of io_req_t, drivers are now requested to fill out struct pcmcia_device *p_dev->resource[0,1] for up to two ioport diff --git a/Documentation/power/00-INDEX b/Documentation/power/00-INDEX index fb742c213c9e..45e9d4a91284 100644 --- a/Documentation/power/00-INDEX +++ b/Documentation/power/00-INDEX @@ -14,6 +14,8 @@ interface.txt - Power management user interface in /sys/power notifiers.txt - Registering suspend notifiers in device drivers +opp.txt + - Operating Performance Point library pci.txt - How the PCI Subsystem Does Power Management pm_qos_interface.txt diff --git a/Documentation/power/interface.txt b/Documentation/power/interface.txt index e67211fe0ee2..c537834af005 100644 --- a/Documentation/power/interface.txt +++ b/Documentation/power/interface.txt @@ -57,7 +57,7 @@ smallest image possible. In particular, if "0" is written to this file, the suspend image will be as small as possible. Reading from this file will display the current image size limit, which -is set to 500 MB by default. +is set to 2/5 of available RAM by default. /sys/power/pm_trace controls the code which saves the last PM event point in the RTC across reboots, so that you can debug a machine that just hangs diff --git a/Documentation/power/opp.txt b/Documentation/power/opp.txt new file mode 100644 index 000000000000..44d87ad3cea9 --- /dev/null +++ b/Documentation/power/opp.txt @@ -0,0 +1,375 @@ +*=============* +* OPP Library * +*=============* + +(C) 2009-2010 Nishanth Menon <nm@ti.com>, Texas Instruments Incorporated + +Contents +-------- +1. Introduction +2. Initial OPP List Registration +3. OPP Search Functions +4. OPP Availability Control Functions +5. OPP Data Retrieval Functions +6. Cpufreq Table Generation +7. Data Structures + +1. Introduction +=============== +Complex SoCs of today consists of a multiple sub-modules working in conjunction. +In an operational system executing varied use cases, not all modules in the SoC +need to function at their highest performing frequency all the time. To +facilitate this, sub-modules in a SoC are grouped into domains, allowing some +domains to run at lower voltage and frequency while other domains are loaded +more. The set of discrete tuples consisting of frequency and voltage pairs that +the device will support per domain are called Operating Performance Points or +OPPs. + +OPP library provides a set of helper functions to organize and query the OPP +information. The library is located in drivers/base/power/opp.c and the header +is located in include/linux/opp.h. OPP library can be enabled by enabling +CONFIG_PM_OPP from power management menuconfig menu. OPP library depends on +CONFIG_PM as certain SoCs such as Texas Instrument's OMAP framework allows to +optionally boot at a certain OPP without needing cpufreq. + +Typical usage of the OPP library is as follows: +(users) -> registers a set of default OPPs -> (library) +SoC framework -> modifies on required cases certain OPPs -> OPP layer + -> queries to search/retrieve information -> + +OPP layer expects each domain to be represented by a unique device pointer. SoC +framework registers a set of initial OPPs per device with the OPP layer. This +list is expected to be an optimally small number typically around 5 per device. +This initial list contains a set of OPPs that the framework expects to be safely +enabled by default in the system. + +Note on OPP Availability: +------------------------ +As the system proceeds to operate, SoC framework may choose to make certain +OPPs available or not available on each device based on various external +factors. Example usage: Thermal management or other exceptional situations where +SoC framework might choose to disable a higher frequency OPP to safely continue +operations until that OPP could be re-enabled if possible. + +OPP library facilitates this concept in it's implementation. The following +operational functions operate only on available opps: +opp_find_freq_{ceil, floor}, opp_get_voltage, opp_get_freq, opp_get_opp_count +and opp_init_cpufreq_table + +opp_find_freq_exact is meant to be used to find the opp pointer which can then +be used for opp_enable/disable functions to make an opp available as required. + +WARNING: Users of OPP library should refresh their availability count using +get_opp_count if opp_enable/disable functions are invoked for a device, the +exact mechanism to trigger these or the notification mechanism to other +dependent subsystems such as cpufreq are left to the discretion of the SoC +specific framework which uses the OPP library. Similar care needs to be taken +care to refresh the cpufreq table in cases of these operations. + +WARNING on OPP List locking mechanism: +------------------------------------------------- +OPP library uses RCU for exclusivity. RCU allows the query functions to operate +in multiple contexts and this synchronization mechanism is optimal for a read +intensive operations on data structure as the OPP library caters to. + +To ensure that the data retrieved are sane, the users such as SoC framework +should ensure that the section of code operating on OPP queries are locked +using RCU read locks. The opp_find_freq_{exact,ceil,floor}, +opp_get_{voltage, freq, opp_count} fall into this category. + +opp_{add,enable,disable} are updaters which use mutex and implement it's own +RCU locking mechanisms. opp_init_cpufreq_table acts as an updater and uses +mutex to implment RCU updater strategy. These functions should *NOT* be called +under RCU locks and other contexts that prevent blocking functions in RCU or +mutex operations from working. + +2. Initial OPP List Registration +================================ +The SoC implementation calls opp_add function iteratively to add OPPs per +device. It is expected that the SoC framework will register the OPP entries +optimally- typical numbers range to be less than 5. The list generated by +registering the OPPs is maintained by OPP library throughout the device +operation. The SoC framework can subsequently control the availability of the +OPPs dynamically using the opp_enable / disable functions. + +opp_add - Add a new OPP for a specific domain represented by the device pointer. + The OPP is defined using the frequency and voltage. Once added, the OPP + is assumed to be available and control of it's availability can be done + with the opp_enable/disable functions. OPP library internally stores + and manages this information in the opp struct. This function may be + used by SoC framework to define a optimal list as per the demands of + SoC usage environment. + + WARNING: Do not use this function in interrupt context. + + Example: + soc_pm_init() + { + /* Do things */ + r = opp_add(mpu_dev, 1000000, 900000); + if (!r) { + pr_err("%s: unable to register mpu opp(%d)\n", r); + goto no_cpufreq; + } + /* Do cpufreq things */ + no_cpufreq: + /* Do remaining things */ + } + +3. OPP Search Functions +======================= +High level framework such as cpufreq operates on frequencies. To map the +frequency back to the corresponding OPP, OPP library provides handy functions +to search the OPP list that OPP library internally manages. These search +functions return the matching pointer representing the opp if a match is +found, else returns error. These errors are expected to be handled by standard +error checks such as IS_ERR() and appropriate actions taken by the caller. + +opp_find_freq_exact - Search for an OPP based on an *exact* frequency and + availability. This function is especially useful to enable an OPP which + is not available by default. + Example: In a case when SoC framework detects a situation where a + higher frequency could be made available, it can use this function to + find the OPP prior to call the opp_enable to actually make it available. + rcu_read_lock(); + opp = opp_find_freq_exact(dev, 1000000000, false); + rcu_read_unlock(); + /* dont operate on the pointer.. just do a sanity check.. */ + if (IS_ERR(opp)) { + pr_err("frequency not disabled!\n"); + /* trigger appropriate actions.. */ + } else { + opp_enable(dev,1000000000); + } + + NOTE: This is the only search function that operates on OPPs which are + not available. + +opp_find_freq_floor - Search for an available OPP which is *at most* the + provided frequency. This function is useful while searching for a lesser + match OR operating on OPP information in the order of decreasing + frequency. + Example: To find the highest opp for a device: + freq = ULONG_MAX; + rcu_read_lock(); + opp_find_freq_floor(dev, &freq); + rcu_read_unlock(); + +opp_find_freq_ceil - Search for an available OPP which is *at least* the + provided frequency. This function is useful while searching for a + higher match OR operating on OPP information in the order of increasing + frequency. + Example 1: To find the lowest opp for a device: + freq = 0; + rcu_read_lock(); + opp_find_freq_ceil(dev, &freq); + rcu_read_unlock(); + Example 2: A simplified implementation of a SoC cpufreq_driver->target: + soc_cpufreq_target(..) + { + /* Do stuff like policy checks etc. */ + /* Find the best frequency match for the req */ + rcu_read_lock(); + opp = opp_find_freq_ceil(dev, &freq); + rcu_read_unlock(); + if (!IS_ERR(opp)) + soc_switch_to_freq_voltage(freq); + else + /* do something when we cant satisfy the req */ + /* do other stuff */ + } + +4. OPP Availability Control Functions +===================================== +A default OPP list registered with the OPP library may not cater to all possible +situation. The OPP library provides a set of functions to modify the +availability of a OPP within the OPP list. This allows SoC frameworks to have +fine grained dynamic control of which sets of OPPs are operationally available. +These functions are intended to *temporarily* remove an OPP in conditions such +as thermal considerations (e.g. don't use OPPx until the temperature drops). + +WARNING: Do not use these functions in interrupt context. + +opp_enable - Make a OPP available for operation. + Example: Lets say that 1GHz OPP is to be made available only if the + SoC temperature is lower than a certain threshold. The SoC framework + implementation might choose to do something as follows: + if (cur_temp < temp_low_thresh) { + /* Enable 1GHz if it was disabled */ + rcu_read_lock(); + opp = opp_find_freq_exact(dev, 1000000000, false); + rcu_read_unlock(); + /* just error check */ + if (!IS_ERR(opp)) + ret = opp_enable(dev, 1000000000); + else + goto try_something_else; + } + +opp_disable - Make an OPP to be not available for operation + Example: Lets say that 1GHz OPP is to be disabled if the temperature + exceeds a threshold value. The SoC framework implementation might + choose to do something as follows: + if (cur_temp > temp_high_thresh) { + /* Disable 1GHz if it was enabled */ + rcu_read_lock(); + opp = opp_find_freq_exact(dev, 1000000000, true); + rcu_read_unlock(); + /* just error check */ + if (!IS_ERR(opp)) + ret = opp_disable(dev, 1000000000); + else + goto try_something_else; + } + +5. OPP Data Retrieval Functions +=============================== +Since OPP library abstracts away the OPP information, a set of functions to pull +information from the OPP structure is necessary. Once an OPP pointer is +retrieved using the search functions, the following functions can be used by SoC +framework to retrieve the information represented inside the OPP layer. + +opp_get_voltage - Retrieve the voltage represented by the opp pointer. + Example: At a cpufreq transition to a different frequency, SoC + framework requires to set the voltage represented by the OPP using + the regulator framework to the Power Management chip providing the + voltage. + soc_switch_to_freq_voltage(freq) + { + /* do things */ + rcu_read_lock(); + opp = opp_find_freq_ceil(dev, &freq); + v = opp_get_voltage(opp); + rcu_read_unlock(); + if (v) + regulator_set_voltage(.., v); + /* do other things */ + } + +opp_get_freq - Retrieve the freq represented by the opp pointer. + Example: Lets say the SoC framework uses a couple of helper functions + we could pass opp pointers instead of doing additional parameters to + handle quiet a bit of data parameters. + soc_cpufreq_target(..) + { + /* do things.. */ + max_freq = ULONG_MAX; + rcu_read_lock(); + max_opp = opp_find_freq_floor(dev,&max_freq); + requested_opp = opp_find_freq_ceil(dev,&freq); + if (!IS_ERR(max_opp) && !IS_ERR(requested_opp)) + r = soc_test_validity(max_opp, requested_opp); + rcu_read_unlock(); + /* do other things */ + } + soc_test_validity(..) + { + if(opp_get_voltage(max_opp) < opp_get_voltage(requested_opp)) + return -EINVAL; + if(opp_get_freq(max_opp) < opp_get_freq(requested_opp)) + return -EINVAL; + /* do things.. */ + } + +opp_get_opp_count - Retrieve the number of available opps for a device + Example: Lets say a co-processor in the SoC needs to know the available + frequencies in a table, the main processor can notify as following: + soc_notify_coproc_available_frequencies() + { + /* Do things */ + rcu_read_lock(); + num_available = opp_get_opp_count(dev); + speeds = kzalloc(sizeof(u32) * num_available, GFP_KERNEL); + /* populate the table in increasing order */ + freq = 0; + while (!IS_ERR(opp = opp_find_freq_ceil(dev, &freq))) { + speeds[i] = freq; + freq++; + i++; + } + rcu_read_unlock(); + + soc_notify_coproc(AVAILABLE_FREQs, speeds, num_available); + /* Do other things */ + } + +6. Cpufreq Table Generation +=========================== +opp_init_cpufreq_table - cpufreq framework typically is initialized with + cpufreq_frequency_table_cpuinfo which is provided with the list of + frequencies that are available for operation. This function provides + a ready to use conversion routine to translate the OPP layer's internal + information about the available frequencies into a format readily + providable to cpufreq. + + WARNING: Do not use this function in interrupt context. + + Example: + soc_pm_init() + { + /* Do things */ + r = opp_init_cpufreq_table(dev, &freq_table); + if (!r) + cpufreq_frequency_table_cpuinfo(policy, freq_table); + /* Do other things */ + } + + NOTE: This function is available only if CONFIG_CPU_FREQ is enabled in + addition to CONFIG_PM as power management feature is required to + dynamically scale voltage and frequency in a system. + +7. Data Structures +================== +Typically an SoC contains multiple voltage domains which are variable. Each +domain is represented by a device pointer. The relationship to OPP can be +represented as follows: +SoC + |- device 1 + | |- opp 1 (availability, freq, voltage) + | |- opp 2 .. + ... ... + | `- opp n .. + |- device 2 + ... + `- device m + +OPP library maintains a internal list that the SoC framework populates and +accessed by various functions as described above. However, the structures +representing the actual OPPs and domains are internal to the OPP library itself +to allow for suitable abstraction reusable across systems. + +struct opp - The internal data structure of OPP library which is used to + represent an OPP. In addition to the freq, voltage, availability + information, it also contains internal book keeping information required + for the OPP library to operate on. Pointer to this structure is + provided back to the users such as SoC framework to be used as a + identifier for OPP in the interactions with OPP layer. + + WARNING: The struct opp pointer should not be parsed or modified by the + users. The defaults of for an instance is populated by opp_add, but the + availability of the OPP can be modified by opp_enable/disable functions. + +struct device - This is used to identify a domain to the OPP layer. The + nature of the device and it's implementation is left to the user of + OPP library such as the SoC framework. + +Overall, in a simplistic view, the data structure operations is represented as +following: + +Initialization / modification: + +-----+ /- opp_enable +opp_add --> | opp | <------- + | +-----+ \- opp_disable + \-------> domain_info(device) + +Search functions: + /-- opp_find_freq_ceil ---\ +-----+ +domain_info<---- opp_find_freq_exact -----> | opp | + \-- opp_find_freq_floor ---/ +-----+ + +Retrieval functions: ++-----+ /- opp_get_voltage +| opp | <--- ++-----+ \- opp_get_freq + +domain_info <- opp_get_opp_count diff --git a/Documentation/power/runtime_pm.txt b/Documentation/power/runtime_pm.txt index 55b859b3bc72..489e9bacd165 100644 --- a/Documentation/power/runtime_pm.txt +++ b/Documentation/power/runtime_pm.txt @@ -1,6 +1,7 @@ Run-time Power Management Framework for I/O Devices (C) 2009 Rafael J. Wysocki <rjw@sisk.pl>, Novell Inc. +(C) 2010 Alan Stern <stern@rowland.harvard.edu> 1. Introduction @@ -157,7 +158,8 @@ rules: to execute it, the other callbacks will not be executed for the same device. * A request to execute ->runtime_resume() will cancel any pending or - scheduled requests to execute the other callbacks for the same device. + scheduled requests to execute the other callbacks for the same device, + except for scheduled autosuspends. 3. Run-time PM Device Fields @@ -165,7 +167,7 @@ The following device run-time PM fields are present in 'struct dev_pm_info', as defined in include/linux/pm.h: struct timer_list suspend_timer; - - timer used for scheduling (delayed) suspend request + - timer used for scheduling (delayed) suspend and autosuspend requests unsigned long timer_expires; - timer expiration time, in jiffies (if this is different from zero, the @@ -230,6 +232,28 @@ defined in include/linux/pm.h: interface; it may only be modified with the help of the pm_runtime_allow() and pm_runtime_forbid() helper functions + unsigned int no_callbacks; + - indicates that the device does not use the run-time PM callbacks (see + Section 8); it may be modified only by the pm_runtime_no_callbacks() + helper function + + unsigned int use_autosuspend; + - indicates that the device's driver supports delayed autosuspend (see + Section 9); it may be modified only by the + pm_runtime{_dont}_use_autosuspend() helper functions + + unsigned int timer_autosuspends; + - indicates that the PM core should attempt to carry out an autosuspend + when the timer expires rather than a normal suspend + + int autosuspend_delay; + - the delay time (in milliseconds) to be used for autosuspend + + unsigned long last_busy; + - the time (in jiffies) when the pm_runtime_mark_last_busy() helper + function was last called for this device; used in calculating inactivity + periods for autosuspend + All of the above fields are members of the 'power' member of 'struct device'. 4. Run-time PM Device Helper Functions @@ -255,6 +279,12 @@ drivers/base/power/runtime.c and include/linux/pm_runtime.h: error code on failure, where -EAGAIN or -EBUSY means it is safe to attempt to suspend the device again in future + int pm_runtime_autosuspend(struct device *dev); + - same as pm_runtime_suspend() except that the autosuspend delay is taken + into account; if pm_runtime_autosuspend_expiration() says the delay has + not yet expired then an autosuspend is scheduled for the appropriate time + and 0 is returned + int pm_runtime_resume(struct device *dev); - execute the subsystem-level resume callback for the device; returns 0 on success, 1 if the device's run-time PM status was already 'active' or @@ -267,6 +297,11 @@ drivers/base/power/runtime.c and include/linux/pm_runtime.h: device (the request is represented by a work item in pm_wq); returns 0 on success or error code if the request has not been queued up + int pm_request_autosuspend(struct device *dev); + - schedule the execution of the subsystem-level suspend callback for the + device when the autosuspend delay has expired; if the delay has already + expired then the work item is queued up immediately + int pm_schedule_suspend(struct device *dev, unsigned int delay); - schedule the execution of the subsystem-level suspend callback for the device in future, where 'delay' is the time to wait before queuing up a @@ -298,12 +333,20 @@ drivers/base/power/runtime.c and include/linux/pm_runtime.h: - decrement the device's usage counter int pm_runtime_put(struct device *dev); - - decrement the device's usage counter, run pm_request_idle(dev) and return - its result + - decrement the device's usage counter; if the result is 0 then run + pm_request_idle(dev) and return its result + + int pm_runtime_put_autosuspend(struct device *dev); + - decrement the device's usage counter; if the result is 0 then run + pm_request_autosuspend(dev) and return its result int pm_runtime_put_sync(struct device *dev); - - decrement the device's usage counter, run pm_runtime_idle(dev) and return - its result + - decrement the device's usage counter; if the result is 0 then run + pm_runtime_idle(dev) and return its result + + int pm_runtime_put_sync_autosuspend(struct device *dev); + - decrement the device's usage counter; if the result is 0 then run + pm_runtime_autosuspend(dev) and return its result void pm_runtime_enable(struct device *dev); - enable the run-time PM helper functions to run the device bus type's @@ -349,19 +392,51 @@ drivers/base/power/runtime.c and include/linux/pm_runtime.h: counter (used by the /sys/devices/.../power/control interface to effectively prevent the device from being power managed at run time) + void pm_runtime_no_callbacks(struct device *dev); + - set the power.no_callbacks flag for the device and remove the run-time + PM attributes from /sys/devices/.../power (or prevent them from being + added when the device is registered) + + void pm_runtime_mark_last_busy(struct device *dev); + - set the power.last_busy field to the current time + + void pm_runtime_use_autosuspend(struct device *dev); + - set the power.use_autosuspend flag, enabling autosuspend delays + + void pm_runtime_dont_use_autosuspend(struct device *dev); + - clear the power.use_autosuspend flag, disabling autosuspend delays + + void pm_runtime_set_autosuspend_delay(struct device *dev, int delay); + - set the power.autosuspend_delay value to 'delay' (expressed in + milliseconds); if 'delay' is negative then run-time suspends are + prevented + + unsigned long pm_runtime_autosuspend_expiration(struct device *dev); + - calculate the time when the current autosuspend delay period will expire, + based on power.last_busy and power.autosuspend_delay; if the delay time + is 1000 ms or larger then the expiration time is rounded up to the + nearest second; returns 0 if the delay period has already expired or + power.use_autosuspend isn't set, otherwise returns the expiration time + in jiffies + It is safe to execute the following helper functions from interrupt context: pm_request_idle() +pm_request_autosuspend() pm_schedule_suspend() pm_request_resume() pm_runtime_get_noresume() pm_runtime_get() pm_runtime_put_noidle() pm_runtime_put() +pm_runtime_put_autosuspend() +pm_runtime_enable() pm_suspend_ignore_children() pm_runtime_set_active() pm_runtime_set_suspended() -pm_runtime_enable() +pm_runtime_suspended() +pm_runtime_mark_last_busy() +pm_runtime_autosuspend_expiration() 5. Run-time PM Initialization, Device Probing and Removal @@ -524,3 +599,141 @@ poweroff and run-time suspend callback, and similarly for system resume, thaw, restore, and run-time resume, can achieve this with the help of the UNIVERSAL_DEV_PM_OPS macro defined in include/linux/pm.h (possibly setting its last argument to NULL). + +8. "No-Callback" Devices + +Some "devices" are only logical sub-devices of their parent and cannot be +power-managed on their own. (The prototype example is a USB interface. Entire +USB devices can go into low-power mode or send wake-up requests, but neither is +possible for individual interfaces.) The drivers for these devices have no +need of run-time PM callbacks; if the callbacks did exist, ->runtime_suspend() +and ->runtime_resume() would always return 0 without doing anything else and +->runtime_idle() would always call pm_runtime_suspend(). + +Subsystems can tell the PM core about these devices by calling +pm_runtime_no_callbacks(). This should be done after the device structure is +initialized and before it is registered (although after device registration is +also okay). The routine will set the device's power.no_callbacks flag and +prevent the non-debugging run-time PM sysfs attributes from being created. + +When power.no_callbacks is set, the PM core will not invoke the +->runtime_idle(), ->runtime_suspend(), or ->runtime_resume() callbacks. +Instead it will assume that suspends and resumes always succeed and that idle +devices should be suspended. + +As a consequence, the PM core will never directly inform the device's subsystem +or driver about run-time power changes. Instead, the driver for the device's +parent must take responsibility for telling the device's driver when the +parent's power state changes. + +9. Autosuspend, or automatically-delayed suspends + +Changing a device's power state isn't free; it requires both time and energy. +A device should be put in a low-power state only when there's some reason to +think it will remain in that state for a substantial time. A common heuristic +says that a device which hasn't been used for a while is liable to remain +unused; following this advice, drivers should not allow devices to be suspended +at run-time until they have been inactive for some minimum period. Even when +the heuristic ends up being non-optimal, it will still prevent devices from +"bouncing" too rapidly between low-power and full-power states. + +The term "autosuspend" is an historical remnant. It doesn't mean that the +device is automatically suspended (the subsystem or driver still has to call +the appropriate PM routines); rather it means that run-time suspends will +automatically be delayed until the desired period of inactivity has elapsed. + +Inactivity is determined based on the power.last_busy field. Drivers should +call pm_runtime_mark_last_busy() to update this field after carrying out I/O, +typically just before calling pm_runtime_put_autosuspend(). The desired length +of the inactivity period is a matter of policy. Subsystems can set this length +initially by calling pm_runtime_set_autosuspend_delay(), but after device +registration the length should be controlled by user space, using the +/sys/devices/.../power/autosuspend_delay_ms attribute. + +In order to use autosuspend, subsystems or drivers must call +pm_runtime_use_autosuspend() (preferably before registering the device), and +thereafter they should use the various *_autosuspend() helper functions instead +of the non-autosuspend counterparts: + + Instead of: pm_runtime_suspend use: pm_runtime_autosuspend; + Instead of: pm_schedule_suspend use: pm_request_autosuspend; + Instead of: pm_runtime_put use: pm_runtime_put_autosuspend; + Instead of: pm_runtime_put_sync use: pm_runtime_put_sync_autosuspend. + +Drivers may also continue to use the non-autosuspend helper functions; they +will behave normally, not taking the autosuspend delay into account. +Similarly, if the power.use_autosuspend field isn't set then the autosuspend +helper functions will behave just like the non-autosuspend counterparts. + +The implementation is well suited for asynchronous use in interrupt contexts. +However such use inevitably involves races, because the PM core can't +synchronize ->runtime_suspend() callbacks with the arrival of I/O requests. +This synchronization must be handled by the driver, using its private lock. +Here is a schematic pseudo-code example: + + foo_read_or_write(struct foo_priv *foo, void *data) + { + lock(&foo->private_lock); + add_request_to_io_queue(foo, data); + if (foo->num_pending_requests++ == 0) + pm_runtime_get(&foo->dev); + if (!foo->is_suspended) + foo_process_next_request(foo); + unlock(&foo->private_lock); + } + + foo_io_completion(struct foo_priv *foo, void *req) + { + lock(&foo->private_lock); + if (--foo->num_pending_requests == 0) { + pm_runtime_mark_last_busy(&foo->dev); + pm_runtime_put_autosuspend(&foo->dev); + } else { + foo_process_next_request(foo); + } + unlock(&foo->private_lock); + /* Send req result back to the user ... */ + } + + int foo_runtime_suspend(struct device *dev) + { + struct foo_priv foo = container_of(dev, ...); + int ret = 0; + + lock(&foo->private_lock); + if (foo->num_pending_requests > 0) { + ret = -EBUSY; + } else { + /* ... suspend the device ... */ + foo->is_suspended = 1; + } + unlock(&foo->private_lock); + return ret; + } + + int foo_runtime_resume(struct device *dev) + { + struct foo_priv foo = container_of(dev, ...); + + lock(&foo->private_lock); + /* ... resume the device ... */ + foo->is_suspended = 0; + pm_runtime_mark_last_busy(&foo->dev); + if (foo->num_pending_requests > 0) + foo_process_requests(foo); + unlock(&foo->private_lock); + return 0; + } + +The important point is that after foo_io_completion() asks for an autosuspend, +the foo_runtime_suspend() callback may race with foo_read_or_write(). +Therefore foo_runtime_suspend() has to check whether there are any pending I/O +requests (while holding the private lock) before allowing the suspend to +proceed. + +In addition, the power.autosuspend_delay field can be changed by user space at +any time. If a driver cares about this, it can call +pm_runtime_autosuspend_expiration() from within the ->runtime_suspend() +callback while holding its private lock. If the function returns a nonzero +value then the delay has not yet expired and the callback should return +-EAGAIN. diff --git a/Documentation/power/s2ram.txt b/Documentation/power/s2ram.txt index 514b94fc931e..1bdfa0443773 100644 --- a/Documentation/power/s2ram.txt +++ b/Documentation/power/s2ram.txt @@ -49,6 +49,13 @@ machine that doesn't boot) is: device (lspci and /sys/devices/pci* is your friend), and see if you can fix it, disable it, or trace into its resume function. + If no device matches the hash (or any matches appear to be false positives), + the culprit may be a device from a loadable kernel module that is not loaded + until after the hash is checked. You can check the hash against the current + devices again after more modules are loaded using sysfs: + + cat /sys/power/pm_trace_dev_match + For example, the above happens to be the VGA device on my EVO, which I used to run with "radeonfb" (it's an ATI Radeon mobility). It turns out that "radeonfb" simply cannot resume that device - it tries to set the diff --git a/Documentation/power/swsusp.txt b/Documentation/power/swsusp.txt index 9d60ab717a7b..ea718891a665 100644 --- a/Documentation/power/swsusp.txt +++ b/Documentation/power/swsusp.txt @@ -66,7 +66,8 @@ swsusp saves the state of the machine into active swaps and then reboots or powerdowns. You must explicitly specify the swap partition to resume from with ``resume='' kernel option. If signature is found it loads and restores saved state. If the option ``noresume'' is specified as a boot parameter, it skips -the resuming. +the resuming. If the option ``hibernate=nocompress'' is specified as a boot +parameter, it saves hibernation image without compression. In the meantime while the system is suspended you should not add/remove any of the hardware, write to the filesystems, etc. diff --git a/Documentation/powerpc/dts-bindings/fsl/spi.txt b/Documentation/powerpc/dts-bindings/fsl/spi.txt index 80510c018eea..777abd7399d5 100644 --- a/Documentation/powerpc/dts-bindings/fsl/spi.txt +++ b/Documentation/powerpc/dts-bindings/fsl/spi.txt @@ -1,7 +1,9 @@ * SPI (Serial Peripheral Interface) Required properties: -- cell-index : SPI controller index. +- cell-index : QE SPI subblock index. + 0: QE subblock SPI1 + 1: QE subblock SPI2 - compatible : should be "fsl,spi". - mode : the SPI operation mode, it can be "cpu" or "cpu-qe". - reg : Offset and length of the register set for the device @@ -29,3 +31,23 @@ Example: gpios = <&gpio 18 1 // device reg=<0> &gpio 19 1>; // device reg=<1> }; + + +* eSPI (Enhanced Serial Peripheral Interface) + +Required properties: +- compatible : should be "fsl,mpc8536-espi". +- reg : Offset and length of the register set for the device. +- interrupts : should contain eSPI interrupt, the device has one interrupt. +- fsl,espi-num-chipselects : the number of the chipselect signals. + +Example: + spi@110000 { + #address-cells = <1>; + #size-cells = <0>; + compatible = "fsl,mpc8536-espi"; + reg = <0x110000 0x1000>; + interrupts = <53 0x2>; + interrupt-parent = <&mpic>; + fsl,espi-num-chipselects = <4>; + }; diff --git a/MAINTAINERS b/MAINTAINERS index 8395f2eeb782..b618b1e86c46 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -1539,6 +1539,8 @@ T: git git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client.git S: Supported F: Documentation/filesystems/ceph.txt F: fs/ceph +F: net/ceph +F: include/linux/ceph CERTIFIED WIRELESS USB (WUSB) SUBSYSTEM: M: David Vrabel <david.vrabel@csr.com> @@ -3174,7 +3176,7 @@ F: drivers/net/ioc3-eth.c IOC3 SERIAL DRIVER M: Pat Gefre <pfg@sgi.com> -L: linux-mips@linux-mips.org +L: linux-serial@vger.kernel.org S: Maintained F: drivers/serial/ioc3_serial.c @@ -3251,6 +3253,12 @@ F: drivers/net/irda/ F: include/net/irda/ F: net/irda/ +IRQ SUBSYSTEM +M: Thomas Gleixner <tglx@linutronix.de> +S: Maintained +T: git git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip.git irq/core +F: kernel/irq/ + ISAPNP M: Jaroslav Kysela <perex@perex.cz> S: Maintained @@ -4817,6 +4825,15 @@ F: fs/qnx4/ F: include/linux/qnx4_fs.h F: include/linux/qnxtypes.h +RADOS BLOCK DEVICE (RBD) +F: include/linux/qnxtypes.h +M: Yehuda Sadeh <yehuda@hq.newdream.net> +M: Sage Weil <sage@newdream.net> +M: ceph-devel@vger.kernel.org +S: Supported +F: drivers/block/rbd.c +F: drivers/block/rbd_types.h + RADEON FRAMEBUFFER DISPLAY DRIVER M: Benjamin Herrenschmidt <benh@kernel.crashing.org> L: linux-fbdev@vger.kernel.org @@ -1,7 +1,7 @@ VERSION = 2 PATCHLEVEL = 6 SUBLEVEL = 36 -EXTRAVERSION = -rc8 +EXTRAVERSION = NAME = Flesh-Eating Bats with Fangs # *DOCUMENTATION* @@ -575,6 +575,12 @@ endif ifdef CONFIG_FUNCTION_TRACER KBUILD_CFLAGS += -pg +ifdef CONFIG_DYNAMIC_FTRACE + ifdef CONFIG_HAVE_C_RECORDMCOUNT + BUILD_C_RECORDMCOUNT := y + export BUILD_C_RECORDMCOUNT + endif +endif endif # We trigger additional mismatches with less inlining @@ -598,6 +604,11 @@ KBUILD_CFLAGS += $(call cc-option,-fno-strict-overflow) # conserve stack if available KBUILD_CFLAGS += $(call cc-option,-fconserve-stack) +# check for 'asm goto' +ifeq ($(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-goto.sh $(CC)), y) + KBUILD_CFLAGS += -DCC_HAVE_ASM_GOTO +endif + # Add user supplied CPPFLAGS, AFLAGS and CFLAGS as the last assignments # But warn user when we do so warn-assign = \ diff --git a/arch/Kconfig b/arch/Kconfig index fe48fc7a3eba..53d7f619a1b9 100644 --- a/arch/Kconfig +++ b/arch/Kconfig @@ -158,4 +158,7 @@ config HAVE_PERF_EVENTS_NMI subsystem. Also has support for calculating CPU cycle events to determine how many clock cycles in a given period. +config HAVE_ARCH_JUMP_LABEL + bool + source "kernel/gcov/Kconfig" diff --git a/arch/alpha/Kconfig b/arch/alpha/Kconfig index b9647bb66d13..d04ccd73af45 100644 --- a/arch/alpha/Kconfig +++ b/arch/alpha/Kconfig @@ -9,6 +9,7 @@ config ALPHA select HAVE_IDE select HAVE_OPROFILE select HAVE_SYSCALL_WRAPPERS + select HAVE_IRQ_WORK select HAVE_PERF_EVENTS select HAVE_DMA_ATTRS help diff --git a/arch/alpha/include/asm/irqflags.h b/arch/alpha/include/asm/irqflags.h new file mode 100644 index 000000000000..299bbc7e9d71 --- /dev/null +++ b/arch/alpha/include/asm/irqflags.h @@ -0,0 +1,67 @@ +#ifndef __ALPHA_IRQFLAGS_H +#define __ALPHA_IRQFLAGS_H + +#include <asm/system.h> + +#define IPL_MIN 0 +#define IPL_SW0 1 +#define IPL_SW1 2 +#define IPL_DEV0 3 +#define IPL_DEV1 4 +#define IPL_TIMER 5 +#define IPL_PERF 6 +#define IPL_POWERFAIL 6 +#define IPL_MCHECK 7 +#define IPL_MAX 7 + +#ifdef CONFIG_ALPHA_BROKEN_IRQ_MASK +#undef IPL_MIN +#define IPL_MIN __min_ipl +extern int __min_ipl; +#endif + +#define getipl() (rdps() & 7) +#define setipl(ipl) ((void) swpipl(ipl)) + +static inline unsigned long arch_local_save_flags(void) +{ + return rdps(); +} + +static inline void arch_local_irq_disable(void) +{ + setipl(IPL_MAX); + barrier(); +} + +static inline unsigned long arch_local_irq_save(void) +{ + unsigned long flags = swpipl(IPL_MAX); + barrier(); + return flags; +} + +static inline void arch_local_irq_enable(void) +{ + barrier(); + setipl(IPL_MIN); +} + +static inline void arch_local_irq_restore(unsigned long flags) +{ + barrier(); + setipl(flags); + barrier(); +} + +static inline bool arch_irqs_disabled_flags(unsigned long flags) +{ + return flags == IPL_MAX; +} + +static inline bool arch_irqs_disabled(void) +{ + return arch_irqs_disabled_flags(getipl()); +} + +#endif /* __ALPHA_IRQFLAGS_H */ diff --git a/arch/alpha/include/asm/perf_event.h b/arch/alpha/include/asm/perf_event.h index 4157cd3c44a9..fe792ca818f6 100644 --- a/arch/alpha/include/asm/perf_event.h +++ b/arch/alpha/include/asm/perf_event.h @@ -1,11 +1,6 @@ #ifndef __ASM_ALPHA_PERF_EVENT_H #define __ASM_ALPHA_PERF_EVENT_H -/* Alpha only supports software events through this interface. */ -extern void set_perf_event_pending(void); - -#define PERF_EVENT_INDEX_OFFSET 0 - #ifdef CONFIG_PERF_EVENTS extern void init_hw_perf_events(void); #else diff --git a/arch/alpha/include/asm/system.h b/arch/alpha/include/asm/system.h index 5aa40cca4f23..9f78e6934637 100644 --- a/arch/alpha/include/asm/system.h +++ b/arch/alpha/include/asm/system.h @@ -259,34 +259,6 @@ __CALL_PAL_RW2(wrperfmon, unsigned long, unsigned long, unsigned long); __CALL_PAL_W1(wrusp, unsigned long); __CALL_PAL_W1(wrvptptr, unsigned long); -#define IPL_MIN 0 -#define IPL_SW0 1 -#define IPL_SW1 2 -#define IPL_DEV0 3 -#define IPL_DEV1 4 -#define IPL_TIMER 5 -#define IPL_PERF 6 -#define IPL_POWERFAIL 6 -#define IPL_MCHECK 7 -#define IPL_MAX 7 - -#ifdef CONFIG_ALPHA_BROKEN_IRQ_MASK -#undef IPL_MIN -#define IPL_MIN __min_ipl -extern int __min_ipl; -#endif - -#define getipl() (rdps() & 7) -#define setipl(ipl) ((void) swpipl(ipl)) - -#define local_irq_disable() do { setipl(IPL_MAX); barrier(); } while(0) -#define local_irq_enable() do { barrier(); setipl(IPL_MIN); } while(0) -#define local_save_flags(flags) ((flags) = rdps()) -#define local_irq_save(flags) do { (flags) = swpipl(IPL_MAX); barrier(); } while(0) -#define local_irq_restore(flags) do { barrier(); setipl(flags); barrier(); } while(0) - -#define irqs_disabled() (getipl() == IPL_MAX) - /* * TB routines.. */ diff --git a/arch/alpha/kernel/perf_event.c b/arch/alpha/kernel/perf_event.c index 85d8e4f58c83..1cc49683fb69 100644 --- a/arch/alpha/kernel/perf_event.c +++ b/arch/alpha/kernel/perf_event.c @@ -307,7 +307,7 @@ again: new_raw_count) != prev_raw_count) goto again; - delta = (new_raw_count - (prev_raw_count & alpha_pmu->pmc_count_mask[idx])) + ovf; + delta = (new_raw_count - (prev_raw_count & alpha_pmu->pmc_count_mask[idx])) + ovf; /* It is possible on very rare occasions that the PMC has overflowed * but the interrupt is yet to come. Detect and fix this situation. @@ -402,14 +402,13 @@ static void maybe_change_configuration(struct cpu_hw_events *cpuc) struct hw_perf_event *hwc = &pe->hw; int idx = hwc->idx; - if (cpuc->current_idx[j] != PMC_NO_INDEX) { - cpuc->idx_mask |= (1<<cpuc->current_idx[j]); - continue; + if (cpuc->current_idx[j] == PMC_NO_INDEX) { + alpha_perf_event_set_period(pe, hwc, idx); + cpuc->current_idx[j] = idx; } - alpha_perf_event_set_period(pe, hwc, idx); - cpuc->current_idx[j] = idx; - cpuc->idx_mask |= (1<<cpuc->current_idx[j]); + if (!(hwc->state & PERF_HES_STOPPED)) + cpuc->idx_mask |= (1<<cpuc->current_idx[j]); } cpuc->config = cpuc->event[0]->hw.config_base; } @@ -420,12 +419,13 @@ static void maybe_change_configuration(struct cpu_hw_events *cpuc) * - this function is called from outside this module via the pmu struct * returned from perf event initialisation. */ -static int alpha_pmu_enable(struct perf_event *event) +static int alpha_pmu_add(struct perf_event *event, int flags) { struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events); + struct hw_perf_event *hwc = &event->hw; int n0; int ret; - unsigned long flags; + unsigned long irq_flags; /* * The Sparc code has the IRQ disable first followed by the perf @@ -435,8 +435,8 @@ static int alpha_pmu_enable(struct perf_event *event) * nevertheless we disable the PMCs first to enable a potential * final PMI to occur before we disable interrupts. */ - perf_disable(); - local_irq_save(flags); + perf_pmu_disable(event->pmu); + local_irq_save(irq_flags); /* Default to error to be returned */ ret = -EAGAIN; @@ -455,8 +455,12 @@ static int alpha_pmu_enable(struct perf_event *event) } } - local_irq_restore(flags); - perf_enable(); + hwc->state = PERF_HES_UPTODATE; + if (!(flags & PERF_EF_START)) + hwc->state |= PERF_HES_STOPPED; + + local_irq_restore(irq_flags); + perf_pmu_enable(event->pmu); return ret; } @@ -467,15 +471,15 @@ static int alpha_pmu_enable(struct perf_event *event) * - this function is called from outside this module via the pmu struct * returned from perf event initialisation. */ -static void alpha_pmu_disable(struct perf_event *event) +static void alpha_pmu_del(struct perf_event *event, int flags) { struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events); struct hw_perf_event *hwc = &event->hw; - unsigned long flags; + unsigned long irq_flags; int j; - perf_disable(); - local_irq_save(flags); + perf_pmu_disable(event->pmu); + local_irq_save(irq_flags); for (j = 0; j < cpuc->n_events; j++) { if (event == cpuc->event[j]) { @@ -501,8 +505,8 @@ static void alpha_pmu_disable(struct perf_event *event) } } - local_irq_restore(flags); - perf_enable(); + local_irq_restore(irq_flags); + perf_pmu_enable(event->pmu); } @@ -514,13 +518,44 @@ static void alpha_pmu_read(struct perf_event *event) } -static void alpha_pmu_unthrottle(struct perf_event *event) +static void alpha_pmu_stop(struct perf_event *event, int flags) +{ + struct hw_perf_event *hwc = &event->hw; + struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events); + + if (!(hwc->state & PERF_HES_STOPPED)) { + cpuc->idx_mask &= ~(1UL<<hwc->idx); + hwc->state |= PERF_HES_STOPPED; + } + + if ((flags & PERF_EF_UPDATE) && !(hwc->state & PERF_HES_UPTODATE)) { + alpha_perf_event_update(event, hwc, hwc->idx, 0); + hwc->state |= PERF_HES_UPTODATE; + } + + if (cpuc->enabled) + wrperfmon(PERFMON_CMD_DISABLE, (1UL<<hwc->idx)); +} + + +static void alpha_pmu_start(struct perf_event *event, int flags) { struct hw_perf_event *hwc = &event->hw; struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events); + if (WARN_ON_ONCE(!(hwc->state & PERF_HES_STOPPED))) + return; + + if (flags & PERF_EF_RELOAD) { + WARN_ON_ONCE(!(hwc->state & PERF_HES_UPTODATE)); + alpha_perf_event_set_period(event, hwc, hwc->idx); + } + + hwc->state = 0; + cpuc->idx_mask |= 1UL<<hwc->idx; - wrperfmon(PERFMON_CMD_ENABLE, (1UL<<hwc->idx)); + if (cpuc->enabled) + wrperfmon(PERFMON_CMD_ENABLE, (1UL<<hwc->idx)); } @@ -642,39 +677,36 @@ static int __hw_perf_event_init(struct perf_event *event) return 0; } -static const struct pmu pmu = { - .enable = alpha_pmu_enable, - .disable = alpha_pmu_disable, - .read = alpha_pmu_read, - .unthrottle = alpha_pmu_unthrottle, -}; - - /* * Main entry point to initialise a HW performance event. */ -const struct pmu *hw_perf_event_init(struct perf_event *event) +static int alpha_pmu_event_init(struct perf_event *event) { int err; + switch (event->attr.type) { + case PERF_TYPE_RAW: + case PERF_TYPE_HARDWARE: + case PERF_TYPE_HW_CACHE: + break; + + default: + return -ENOENT; + } + if (!alpha_pmu) - return ERR_PTR(-ENODEV); + return -ENODEV; /* Do the real initialisation work. */ err = __hw_perf_event_init(event); - if (err) - return ERR_PTR(err); - - return &pmu; + return err; } - - /* * Main entry point - enable HW performance counters. */ -void hw_perf_enable(void) +static void alpha_pmu_enable(struct pmu *pmu) { struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events); @@ -700,7 +732,7 @@ void hw_perf_enable(void) * Main entry point - disable HW performance counters. */ -void hw_perf_disable(void) +static void alpha_pmu_disable(struct pmu *pmu) { struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events); @@ -713,6 +745,17 @@ void hw_perf_disable(void) wrperfmon(PERFMON_CMD_DISABLE, cpuc->idx_mask); } +static struct pmu pmu = { + .pmu_enable = alpha_pmu_enable, + .pmu_disable = alpha_pmu_disable, + .event_init = alpha_pmu_event_init, + .add = alpha_pmu_add, + .del = alpha_pmu_del, + .start = alpha_pmu_start, + .stop = alpha_pmu_stop, + .read = alpha_pmu_read, +}; + /* * Main entry point - don't know when this is called but it @@ -766,7 +809,7 @@ static void alpha_perf_event_irq_handler(unsigned long la_ptr, wrperfmon(PERFMON_CMD_DISABLE, cpuc->idx_mask); /* la_ptr is the counter that overflowed. */ - if (unlikely(la_ptr >= perf_max_events)) { + if (unlikely(la_ptr >= alpha_pmu->num_pmcs)) { /* This should never occur! */ irq_err_count++; pr_warning("PMI: silly index %ld\n", la_ptr); @@ -807,7 +850,7 @@ static void alpha_perf_event_irq_handler(unsigned long la_ptr, /* Interrupts coming too quickly; "throttle" the * counter, i.e., disable it for a little while. */ - cpuc->idx_mask &= ~(1UL<<idx); + alpha_pmu_stop(event, 0); } } wrperfmon(PERFMON_CMD_ENABLE, cpuc->idx_mask); @@ -837,6 +880,7 @@ void __init init_hw_perf_events(void) /* And set up PMU specification */ alpha_pmu = &ev67_pmu; - perf_max_events = alpha_pmu->num_pmcs; + + perf_pmu_register(&pmu); } diff --git a/arch/alpha/kernel/time.c b/arch/alpha/kernel/time.c index 396af1799ea4..0f1d8493cfca 100644 --- a/arch/alpha/kernel/time.c +++ b/arch/alpha/kernel/time.c @@ -41,7 +41,7 @@ #include <linux/init.h> #include <linux/bcd.h> #include <linux/profile.h> -#include <linux/perf_event.h> +#include <linux/irq_work.h> #include <asm/uaccess.h> #include <asm/io.h> @@ -83,25 +83,25 @@ static struct { unsigned long est_cycle_freq; -#ifdef CONFIG_PERF_EVENTS +#ifdef CONFIG_IRQ_WORK -DEFINE_PER_CPU(u8, perf_event_pending); +DEFINE_PER_CPU(u8, irq_work_pending); -#define set_perf_event_pending_flag() __get_cpu_var(perf_event_pending) = 1 -#define test_perf_event_pending() __get_cpu_var(perf_event_pending) -#define clear_perf_event_pending() __get_cpu_var(perf_event_pending) = 0 +#define set_irq_work_pending_flag() __get_cpu_var(irq_work_pending) = 1 +#define test_irq_work_pending() __get_cpu_var(irq_work_pending) +#define clear_irq_work_pending() __get_cpu_var(irq_work_pending) = 0 -void set_perf_event_pending(void) +void set_irq_work_pending(void) { - set_perf_event_pending_flag(); + set_irq_work_pending_flag(); } -#else /* CONFIG_PERF_EVENTS */ +#else /* CONFIG_IRQ_WORK */ -#define test_perf_event_pending() 0 -#define clear_perf_event_pending() +#define test_irq_work_pending() 0 +#define clear_irq_work_pending() -#endif /* CONFIG_PERF_EVENTS */ +#endif /* CONFIG_IRQ_WORK */ static inline __u32 rpcc(void) @@ -191,9 +191,9 @@ irqreturn_t timer_interrupt(int irq, void *dev) write_sequnlock(&xtime_lock); - if (test_perf_event_pending()) { - clear_perf_event_pending(); - perf_event_do_pending(); + if (test_irq_work_pending()) { + clear_irq_work_pending(); + irq_work_run(); } #ifndef CONFIG_SMP diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index 19792a9192b7..3849887157e7 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -25,6 +25,7 @@ config ARM select HAVE_KERNEL_GZIP select HAVE_KERNEL_LZO select HAVE_KERNEL_LZMA + select HAVE_IRQ_WORK select HAVE_PERF_EVENTS select PERF_USE_VMALLOC select HAVE_REGS_AND_STACK_ACCESS_API diff --git a/arch/arm/include/asm/hw_irq.h b/arch/arm/include/asm/hw_irq.h index 90831f6f5f5c..5586b7c8ef6f 100644 --- a/arch/arm/include/asm/hw_irq.h +++ b/arch/arm/include/asm/hw_irq.h @@ -24,4 +24,6 @@ void set_irq_flags(unsigned int irq, unsigned int flags); #define IRQF_PROBE (1 << 1) #define IRQF_NOAUTOEN (1 << 2) +#define ARCH_IRQ_INIT_FLAGS (IRQ_NOREQUEST | IRQ_NOPROBE) + #endif diff --git a/arch/arm/include/asm/irqflags.h b/arch/arm/include/asm/irqflags.h index 6d09974e6646..1e6cca55c750 100644 --- a/arch/arm/include/asm/irqflags.h +++ b/arch/arm/include/asm/irqflags.h @@ -10,66 +10,85 @@ */ #if __LINUX_ARM_ARCH__ >= 6 -#define raw_local_irq_save(x) \ - ({ \ - __asm__ __volatile__( \ - "mrs %0, cpsr @ local_irq_save\n" \ - "cpsid i" \ - : "=r" (x) : : "memory", "cc"); \ - }) +static inline unsigned long arch_local_irq_save(void) +{ + unsigned long flags; + + asm volatile( + " mrs %0, cpsr @ arch_local_irq_save\n" + " cpsid i" + : "=r" (flags) : : "memory", "cc"); + return flags; +} + +static inline void arch_local_irq_enable(void) +{ + asm volatile( + " cpsie i @ arch_local_irq_enable" + : + : + : "memory", "cc"); +} + +static inline void arch_local_irq_disable(void) +{ + asm volatile( + " cpsid i @ arch_local_irq_disable" + : + : + : "memory", "cc"); +} -#define raw_local_irq_enable() __asm__("cpsie i @ __sti" : : : "memory", "cc") -#define raw_local_irq_disable() __asm__("cpsid i @ __cli" : : : "memory", "cc") #define local_fiq_enable() __asm__("cpsie f @ __stf" : : : "memory", "cc") #define local_fiq_disable() __asm__("cpsid f @ __clf" : : : "memory", "cc") - #else /* * Save the current interrupt enable state & disable IRQs */ -#define raw_local_irq_save(x) \ - ({ \ - unsigned long temp; \ - (void) (&temp == &x); \ - __asm__ __volatile__( \ - "mrs %0, cpsr @ local_irq_save\n" \ -" orr %1, %0, #128\n" \ -" msr cpsr_c, %1" \ - : "=r" (x), "=r" (temp) \ - : \ - : "memory", "cc"); \ - }) - +static inline unsigned long arch_local_irq_save(void) +{ + unsigned long flags, temp; + + asm volatile( + " mrs %0, cpsr @ arch_local_irq_save\n" + " orr %1, %0, #128\n" + " msr cpsr_c, %1" + : "=r" (flags), "=r" (temp) + : + : "memory", "cc"); + return flags; +} + /* * Enable IRQs */ -#define raw_local_irq_enable() \ - ({ \ - unsigned long temp; \ - __asm__ __volatile__( \ - "mrs %0, cpsr @ local_irq_enable\n" \ -" bic %0, %0, #128\n" \ -" msr cpsr_c, %0" \ - : "=r" (temp) \ - : \ - : "memory", "cc"); \ - }) +static inline void arch_local_irq_enable(void) +{ + unsigned long temp; + asm volatile( + " mrs %0, cpsr @ arch_local_irq_enable\n" + " bic %0, %0, #128\n" + " msr cpsr_c, %0" + : "=r" (temp) + : + : "memory", "cc"); +} /* * Disable IRQs */ -#define raw_local_irq_disable() \ - ({ \ - unsigned long temp; \ - __asm__ __volatile__( \ - "mrs %0, cpsr @ local_irq_disable\n" \ -" orr %0, %0, #128\n" \ -" msr cpsr_c, %0" \ - : "=r" (temp) \ - : \ - : "memory", "cc"); \ - }) +static inline void arch_local_irq_disable(void) +{ + unsigned long temp; + asm volatile( + " mrs %0, cpsr @ arch_local_irq_disable\n" + " orr %0, %0, #128\n" + " msr cpsr_c, %0" + : "=r" (temp) + : + : "memory", "cc"); +} /* * Enable FIQs @@ -106,27 +125,31 @@ /* * Save the current interrupt enable state. */ -#define raw_local_save_flags(x) \ - ({ \ - __asm__ __volatile__( \ - "mrs %0, cpsr @ local_save_flags" \ - : "=r" (x) : : "memory", "cc"); \ - }) +static inline unsigned long arch_local_save_flags(void) +{ + unsigned long flags; + asm volatile( + " mrs %0, cpsr @ local_save_flags" + : "=r" (flags) : : "memory", "cc"); + return flags; +} /* * restore saved IRQ & FIQ state */ -#define raw_local_irq_restore(x) \ - __asm__ __volatile__( \ - "msr cpsr_c, %0 @ local_irq_restore\n" \ - : \ - : "r" (x) \ - : "memory", "cc") +static inline void arch_local_irq_restore(unsigned long flags) +{ + asm volatile( + " msr cpsr_c, %0 @ local_irq_restore" + : + : "r" (flags) + : "memory", "cc"); +} -#define raw_irqs_disabled_flags(flags) \ -({ \ - (int)((flags) & PSR_I_BIT); \ -}) +static inline int arch_irqs_disabled_flags(unsigned long flags) +{ + return flags & PSR_I_BIT; +} #endif #endif diff --git a/arch/arm/include/asm/perf_event.h b/arch/arm/include/asm/perf_event.h index b5799a3b7117..c4aa4e8c6af9 100644 --- a/arch/arm/include/asm/perf_event.h +++ b/arch/arm/include/asm/perf_event.h @@ -12,18 +12,6 @@ #ifndef __ARM_PERF_EVENT_H__ #define __ARM_PERF_EVENT_H__ -/* - * NOP: on *most* (read: all supported) ARM platforms, the performance - * counter interrupts are regular interrupts and not an NMI. This - * means that when we receive the interrupt we can call - * perf_event_do_pending() that handles all of the work with - * interrupts disabled. - */ -static inline void -set_perf_event_pending(void) -{ -} - /* ARM performance counters start from 1 (in the cp15 accesses) so use the * same indexes here for consistency. */ #define PERF_EVENT_INDEX_OFFSET 1 diff --git a/arch/arm/kernel/irq.c b/arch/arm/kernel/irq.c index c0d5c3b3a760..36ad3be4692a 100644 --- a/arch/arm/kernel/irq.c +++ b/arch/arm/kernel/irq.c @@ -154,14 +154,6 @@ void set_irq_flags(unsigned int irq, unsigned int iflags) void __init init_IRQ(void) { - struct irq_desc *desc; - int irq; - - for (irq = 0; irq < nr_irqs; irq++) { - desc = irq_to_desc_alloc_node(irq, 0); - desc->status |= IRQ_NOREQUEST | IRQ_NOPROBE; - } - init_arch_irq(); } @@ -169,7 +161,7 @@ void __init init_IRQ(void) int __init arch_probe_nr_irqs(void) { nr_irqs = arch_nr_irqs ? arch_nr_irqs : NR_IRQS; - return 0; + return nr_irqs; } #endif diff --git a/arch/arm/kernel/perf_event.c b/arch/arm/kernel/perf_event.c index ecbb0288e5dd..49643b1467e6 100644 --- a/arch/arm/kernel/perf_event.c +++ b/arch/arm/kernel/perf_event.c @@ -123,6 +123,12 @@ armpmu_get_max_events(void) } EXPORT_SYMBOL_GPL(armpmu_get_max_events); +int perf_num_counters(void) +{ + return armpmu_get_max_events(); +} +EXPORT_SYMBOL_GPL(perf_num_counters); + #define HW_OP_UNSUPPORTED 0xFFFF #define C(_x) \ @@ -221,46 +227,56 @@ again: } static void -armpmu_disable(struct perf_event *event) +armpmu_read(struct perf_event *event) { - struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events); struct hw_perf_event *hwc = &event->hw; - int idx = hwc->idx; - - WARN_ON(idx < 0); - - clear_bit(idx, cpuc->active_mask); - armpmu->disable(hwc, idx); - - barrier(); - armpmu_event_update(event, hwc, idx); - cpuc->events[idx] = NULL; - clear_bit(idx, cpuc->used_mask); + /* Don't read disabled counters! */ + if (hwc->idx < 0) + return; - perf_event_update_userpage(event); + armpmu_event_update(event, hwc, hwc->idx); } static void -armpmu_read(struct perf_event *event) +armpmu_stop(struct perf_event *event, int flags) { struct hw_perf_event *hwc = &event->hw; - /* Don't read disabled counters! */ - if (hwc->idx < 0) + if (!armpmu) return; - armpmu_event_update(event, hwc, hwc->idx); + /* + * ARM pmu always has to update the counter, so ignore + * PERF_EF_UPDATE, see comments in armpmu_start(). + */ + if (!(hwc->state & PERF_HES_STOPPED)) { + armpmu->disable(hwc, hwc->idx); + barrier(); /* why? */ + armpmu_event_update(event, hwc, hwc->idx); + hwc->state |= PERF_HES_STOPPED | PERF_HES_UPTODATE; + } } static void -armpmu_unthrottle(struct perf_event *event) +armpmu_start(struct perf_event *event, int flags) { struct hw_perf_event *hwc = &event->hw; + if (!armpmu) + return; + + /* + * ARM pmu always has to reprogram the period, so ignore + * PERF_EF_RELOAD, see the comment below. + */ + if (flags & PERF_EF_RELOAD) + WARN_ON_ONCE(!(hwc->state & PERF_HES_UPTODATE)); + + hwc->state = 0; /* * Set the period again. Some counters can't be stopped, so when we - * were throttled we simply disabled the IRQ source and the counter + * were stopped we simply disabled the IRQ source and the counter * may have been left counting. If we don't do this step then we may * get an interrupt too soon or *way* too late if the overflow has * happened since disabling. @@ -269,14 +285,33 @@ armpmu_unthrottle(struct perf_event *event) armpmu->enable(hwc, hwc->idx); } +static void +armpmu_del(struct perf_event *event, int flags) +{ + struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events); + struct hw_perf_event *hwc = &event->hw; + int idx = hwc->idx; + + WARN_ON(idx < 0); + + clear_bit(idx, cpuc->active_mask); + armpmu_stop(event, PERF_EF_UPDATE); + cpuc->events[idx] = NULL; + clear_bit(idx, cpuc->used_mask); + + perf_event_update_userpage(event); +} + static int -armpmu_enable(struct perf_event *event) +armpmu_add(struct perf_event *event, int flags) { struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events); struct hw_perf_event *hwc = &event->hw; int idx; int err = 0; + perf_pmu_disable(event->pmu); + /* If we don't have a space for the counter then finish early. */ idx = armpmu->get_event_idx(cpuc, hwc); if (idx < 0) { @@ -293,25 +328,19 @@ armpmu_enable(struct perf_event *event) cpuc->events[idx] = event; set_bit(idx, cpuc->active_mask); - /* Set the period for the event. */ - armpmu_event_set_period(event, hwc, idx); - - /* Enable the event. */ - armpmu->enable(hwc, idx); + hwc->state = PERF_HES_STOPPED | PERF_HES_UPTODATE; + if (flags & PERF_EF_START) + armpmu_start(event, PERF_EF_RELOAD); /* Propagate our changes to the userspace mapping. */ perf_event_update_userpage(event); out: + perf_pmu_enable(event->pmu); return err; } -static struct pmu pmu = { - .enable = armpmu_enable, - .disable = armpmu_disable, - .unthrottle = armpmu_unthrottle, - .read = armpmu_read, -}; +static struct pmu pmu; static int validate_event(struct cpu_hw_events *cpuc, @@ -491,20 +520,29 @@ __hw_perf_event_init(struct perf_event *event) return err; } -const struct pmu * -hw_perf_event_init(struct perf_event *event) +static int armpmu_event_init(struct perf_event *event) { int err = 0; + switch (event->attr.type) { + case PERF_TYPE_RAW: + case PERF_TYPE_HARDWARE: + case PERF_TYPE_HW_CACHE: + break; + + default: + return -ENOENT; + } + if (!armpmu) - return ERR_PTR(-ENODEV); + return -ENODEV; event->destroy = hw_perf_event_destroy; if (!atomic_inc_not_zero(&active_events)) { - if (atomic_read(&active_events) > perf_max_events) { + if (atomic_read(&active_events) > armpmu->num_events) { atomic_dec(&active_events); - return ERR_PTR(-ENOSPC); + return -ENOSPC; } mutex_lock(&pmu_reserve_mutex); @@ -518,17 +556,16 @@ hw_perf_event_init(struct perf_event *event) } if (err) - return ERR_PTR(err); + return err; err = __hw_perf_event_init(event); if (err) hw_perf_event_destroy(event); - return err ? ERR_PTR(err) : &pmu; + return err; } -void -hw_perf_enable(void) +static void armpmu_enable(struct pmu *pmu) { /* Enable all of the perf events on hardware. */ int idx; @@ -549,13 +586,23 @@ hw_perf_enable(void) armpmu->start(); } -void -hw_perf_disable(void) +static void armpmu_disable(struct pmu *pmu) { if (armpmu) armpmu->stop(); } +static struct pmu pmu = { + .pmu_enable = armpmu_enable, + .pmu_disable = armpmu_disable, + .event_init = armpmu_event_init, + .add = armpmu_add, + .del = armpmu_del, + .start = armpmu_start, + .stop = armpmu_stop, + .read = armpmu_read, +}; + /* * ARMv6 Performance counter handling code. * @@ -1045,7 +1092,7 @@ armv6pmu_handle_irq(int irq_num, * platforms that can have the PMU interrupts raised as an NMI, this * will not work. */ - perf_event_do_pending(); + irq_work_run(); return IRQ_HANDLED; } @@ -2021,7 +2068,7 @@ static irqreturn_t armv7pmu_handle_irq(int irq_num, void *dev) * platforms that can have the PMU interrupts raised as an NMI, this * will not work. */ - perf_event_do_pending(); + irq_work_run(); return IRQ_HANDLED; } @@ -2389,7 +2436,7 @@ xscale1pmu_handle_irq(int irq_num, void *dev) armpmu->disable(hwc, idx); } - perf_event_do_pending(); + irq_work_run(); /* * Re-enable the PMU. @@ -2716,7 +2763,7 @@ xscale2pmu_handle_irq(int irq_num, void *dev) armpmu->disable(hwc, idx); } - perf_event_do_pending(); + irq_work_run(); /* * Re-enable the PMU. @@ -2933,14 +2980,12 @@ init_hw_perf_events(void) armpmu = &armv6pmu; memcpy(armpmu_perf_cache_map, armv6_perf_cache_map, sizeof(armv6_perf_cache_map)); - perf_max_events = armv6pmu.num_events; break; case 0xB020: /* ARM11mpcore */ armpmu = &armv6mpcore_pmu; memcpy(armpmu_perf_cache_map, armv6mpcore_perf_cache_map, sizeof(armv6mpcore_perf_cache_map)); - perf_max_events = armv6mpcore_pmu.num_events; break; case 0xC080: /* Cortex-A8 */ armv7pmu.id = ARM_PERF_PMU_ID_CA8; @@ -2952,7 +2997,6 @@ init_hw_perf_events(void) /* Reset PMNC and read the nb of CNTx counters supported */ armv7pmu.num_events = armv7_reset_read_pmnc(); - perf_max_events = armv7pmu.num_events; break; case 0xC090: /* Cortex-A9 */ armv7pmu.id = ARM_PERF_PMU_ID_CA9; @@ -2964,7 +3008,6 @@ init_hw_perf_events(void) /* Reset PMNC and read the nb of CNTx counters supported */ armv7pmu.num_events = armv7_reset_read_pmnc(); - perf_max_events = armv7pmu.num_events; break; } /* Intel CPUs [xscale]. */ @@ -2975,13 +3018,11 @@ init_hw_perf_events(void) armpmu = &xscale1pmu; memcpy(armpmu_perf_cache_map, xscale_perf_cache_map, sizeof(xscale_perf_cache_map)); - perf_max_events = xscale1pmu.num_events; break; case 2: armpmu = &xscale2pmu; memcpy(armpmu_perf_cache_map, xscale_perf_cache_map, sizeof(xscale_perf_cache_map)); - perf_max_events = xscale2pmu.num_events; break; } } @@ -2991,9 +3032,10 @@ init_hw_perf_events(void) arm_pmu_names[armpmu->id], armpmu->num_events); } else { pr_info("no hardware support available\n"); - perf_max_events = -1; } + perf_pmu_register(&pmu); + return 0; } arch_initcall(init_hw_perf_events); @@ -3001,13 +3043,6 @@ arch_initcall(init_hw_perf_events); /* * Callchain handling code. */ -static inline void -callchain_store(struct perf_callchain_entry *entry, - u64 ip) -{ - if (entry->nr < PERF_MAX_STACK_DEPTH) - entry->ip[entry->nr++] = ip; -} /* * The registers we're interested in are at the end of the variable @@ -3039,7 +3074,7 @@ user_backtrace(struct frame_tail *tail, if (__copy_from_user_inatomic(&buftail, tail, sizeof(buftail))) return NULL; - callchain_store(entry, buftail.lr); + perf_callchain_store(entry, buftail.lr); /* * Frame pointers should strictly progress back up the stack @@ -3051,16 +3086,11 @@ user_backtrace(struct frame_tail *tail, return buftail.fp - 1; } -static void -perf_callchain_user(struct pt_regs *regs, - struct perf_callchain_entry *entry) +void +perf_callchain_user(struct perf_callchain_entry *entry, struct pt_regs *regs) { struct frame_tail *tail; - callchain_store(entry, PERF_CONTEXT_USER); - - if (!user_mode(regs)) - regs = task_pt_regs(current); tail = (struct frame_tail *)regs->ARM_fp - 1; @@ -3078,56 +3108,18 @@ callchain_trace(struct stackframe *fr, void *data) { struct perf_callchain_entry *entry = data; - callchain_store(entry, fr->pc); + perf_callchain_store(entry, fr->pc); return 0; } -static void -perf_callchain_kernel(struct pt_regs *regs, - struct perf_callchain_entry *entry) +void +perf_callchain_kernel(struct perf_callchain_entry *entry, struct pt_regs *regs) { struct stackframe fr; - callchain_store(entry, PERF_CONTEXT_KERNEL); fr.fp = regs->ARM_fp; fr.sp = regs->ARM_sp; fr.lr = regs->ARM_lr; fr.pc = regs->ARM_pc; walk_stackframe(&fr, callchain_trace, entry); } - -static void -perf_do_callchain(struct pt_regs *regs, - struct perf_callchain_entry *entry) -{ - int is_user; - - if (!regs) - return; - - is_user = user_mode(regs); - - if (!current || !current->pid) - return; - - if (is_user && current->state != TASK_RUNNING) - return; - - if (!is_user) - perf_callchain_kernel(regs, entry); - - if (current->mm) - perf_callchain_user(regs, entry); -} - -static DEFINE_PER_CPU(struct perf_callchain_entry, pmc_irq_entry); - -struct perf_callchain_entry * -perf_callchain(struct pt_regs *regs) -{ - struct perf_callchain_entry *entry = &__get_cpu_var(pmc_irq_entry); - - entry->nr = 0; - perf_do_callchain(regs, entry); - return entry; -} diff --git a/arch/arm/mach-bcmring/dma.c b/arch/arm/mach-bcmring/dma.c index 29c0a911df26..77eb35c89cd0 100644 --- a/arch/arm/mach-bcmring/dma.c +++ b/arch/arm/mach-bcmring/dma.c @@ -691,7 +691,7 @@ int dma_init(void) memset(&gDMA, 0, sizeof(gDMA)); - init_MUTEX_LOCKED(&gDMA.lock); + sema_init(&gDMA.lock, 0); init_waitqueue_head(&gDMA.freeChannelQ); /* Initialize the Hardware */ @@ -1574,7 +1574,7 @@ int dma_init_mem_map(DMA_MemMap_t *memMap) { memset(memMap, 0, sizeof(*memMap)); - init_MUTEX(&memMap->lock); + sema_init(&memMap->lock, 1); return 0; } diff --git a/arch/arm/mach-bcmring/irq.c b/arch/arm/mach-bcmring/irq.c index dc1c4939b0ce..e3152631eb37 100644 --- a/arch/arm/mach-bcmring/irq.c +++ b/arch/arm/mach-bcmring/irq.c @@ -67,21 +67,21 @@ static void bcmring_unmask_irq2(unsigned int irq) } static struct irq_chip bcmring_irq0_chip = { - .typename = "ARM-INTC0", + .name = "ARM-INTC0", .ack = bcmring_mask_irq0, .mask = bcmring_mask_irq0, /* mask a specific interrupt, blocking its delivery. */ .unmask = bcmring_unmask_irq0, /* unmaks an interrupt */ }; static struct irq_chip bcmring_irq1_chip = { - .typename = "ARM-INTC1", + .name = "ARM-INTC1", .ack = bcmring_mask_irq1, .mask = bcmring_mask_irq1, .unmask = bcmring_unmask_irq1, }; static struct irq_chip bcmring_irq2_chip = { - .typename = "ARM-SINTC", + .name = "ARM-SINTC", .ack = bcmring_mask_irq2, .mask = bcmring_mask_irq2, .unmask = bcmring_unmask_irq2, diff --git a/arch/arm/mach-iop13xx/msi.c b/arch/arm/mach-iop13xx/msi.c index f34b0ed80630..7149fcc16c8a 100644 --- a/arch/arm/mach-iop13xx/msi.c +++ b/arch/arm/mach-iop13xx/msi.c @@ -164,10 +164,10 @@ static void iop13xx_msi_nop(unsigned int irq) static struct irq_chip iop13xx_msi_chip = { .name = "PCI-MSI", .ack = iop13xx_msi_nop, - .enable = unmask_msi_irq, - .disable = mask_msi_irq, - .mask = mask_msi_irq, - .unmask = unmask_msi_irq, + .irq_enable = unmask_msi_irq, + .irq_disable = mask_msi_irq, + .irq_mask = mask_msi_irq, + .irq_unmask = unmask_msi_irq, }; int arch_setup_msi_irq(struct pci_dev *pdev, struct msi_desc *desc) diff --git a/arch/arm/mach-lpc32xx/phy3250.c b/arch/arm/mach-lpc32xx/phy3250.c index a058de858907..7993b096778e 100644 --- a/arch/arm/mach-lpc32xx/phy3250.c +++ b/arch/arm/mach-lpc32xx/phy3250.c @@ -172,18 +172,12 @@ static void phy3250_spi_cs_set(u32 control) } static struct pl022_config_chip spi0_chip_info = { - .lbm = LOOPBACK_DISABLED, .com_mode = INTERRUPT_TRANSFER, .iface = SSP_INTERFACE_MOTOROLA_SPI, .hierarchy = SSP_MASTER, .slave_tx_disable = 0, - .endian_tx = SSP_TX_LSB, - .endian_rx = SSP_RX_LSB, - .data_size = SSP_DATA_BITS_8, .rx_lev_trig = SSP_RX_4_OR_MORE_ELEM, .tx_lev_trig = SSP_TX_4_OR_MORE_EMPTY_LOC, - .clk_phase = SSP_CLK_FIRST_EDGE, - .clk_pol = SSP_CLK_POL_IDLE_LOW, .ctrl_len = SSP_BITS_8, .wait_state = SSP_MWIRE_WAIT_ZERO, .duplex = SSP_MICROWIRE_CHANNEL_FULL_DUPLEX, @@ -239,6 +233,7 @@ static int __init phy3250_spi_board_register(void) .max_speed_hz = 5000000, .bus_num = 0, .chip_select = 0, + .mode = SPI_MODE_0, .platform_data = &eeprom, .controller_data = &spi0_chip_info, }, diff --git a/arch/arm/mach-u300/dummyspichip.c b/arch/arm/mach-u300/dummyspichip.c index 5f55012b7c9e..03f793612594 100644 --- a/arch/arm/mach-u300/dummyspichip.c +++ b/arch/arm/mach-u300/dummyspichip.c @@ -46,7 +46,6 @@ static ssize_t dummy_looptest(struct device *dev, * struct, this is just used here to alter the behaviour of the chip * in order to perform tests. */ - struct pl022_config_chip *chip_info = spi->controller_data; int status; u8 txbuf[14] = {0xDE, 0xAD, 0xBE, 0xEF, 0x2B, 0xAD, 0xCA, 0xFE, 0xBA, 0xBE, 0xB1, 0x05, @@ -72,7 +71,7 @@ static ssize_t dummy_looptest(struct device *dev, * Force chip to 8 bit mode * WARNING: NEVER DO THIS IN REAL DRIVER CODE, THIS SHOULD BE STATIC! */ - chip_info->data_size = SSP_DATA_BITS_8; + spi->bits_per_word = 8; /* You should NOT DO THIS EITHER */ spi->master->setup(spi); @@ -159,7 +158,7 @@ static ssize_t dummy_looptest(struct device *dev, * Force chip to 16 bit mode * WARNING: NEVER DO THIS IN REAL DRIVER CODE, THIS SHOULD BE STATIC! */ - chip_info->data_size = SSP_DATA_BITS_16; + spi->bits_per_word = 16; /* You should NOT DO THIS EITHER */ spi->master->setup(spi); diff --git a/arch/arm/mach-u300/spi.c b/arch/arm/mach-u300/spi.c index f0e887bea30e..edb2c0d255c2 100644 --- a/arch/arm/mach-u300/spi.c +++ b/arch/arm/mach-u300/spi.c @@ -30,8 +30,6 @@ static void select_dummy_chip(u32 chipselect) } struct pl022_config_chip dummy_chip_info = { - /* Nominally this is LOOPBACK_DISABLED, but this is our dummy chip! */ - .lbm = LOOPBACK_ENABLED, /* * available POLLING_TRANSFER and INTERRUPT_TRANSFER, * DMA_TRANSFER does not work @@ -42,14 +40,8 @@ struct pl022_config_chip dummy_chip_info = { .hierarchy = SSP_MASTER, /* 0 = drive TX even as slave, 1 = do not drive TX as slave */ .slave_tx_disable = 0, - /* LSB first */ - .endian_tx = SSP_TX_LSB, - .endian_rx = SSP_RX_LSB, - .data_size = SSP_DATA_BITS_8, /* used to be 12 in some default */ .rx_lev_trig = SSP_RX_1_OR_MORE_ELEM, .tx_lev_trig = SSP_TX_1_OR_MORE_EMPTY_LOC, - .clk_phase = SSP_CLK_SECOND_EDGE, - .clk_pol = SSP_CLK_POL_IDLE_LOW, .ctrl_len = SSP_BITS_12, .wait_state = SSP_MWIRE_WAIT_ZERO, .duplex = SSP_MICROWIRE_CHANNEL_FULL_DUPLEX, @@ -75,7 +67,7 @@ static struct spi_board_info u300_spi_devices[] = { .bus_num = 0, /* Only one bus on this chip */ .chip_select = 0, /* Means SPI_CS_HIGH, change if e.g low CS */ - .mode = 0, + .mode = SPI_MODE_1 | SPI_LSB_FIRST | SPI_LOOP, }, #endif }; diff --git a/arch/arm/mach-ux500/board-mop500.c b/arch/arm/mach-ux500/board-mop500.c index 4fb23e2e2cd5..fcb587f825cc 100644 --- a/arch/arm/mach-ux500/board-mop500.c +++ b/arch/arm/mach-ux500/board-mop500.c @@ -57,19 +57,13 @@ static void ab4500_spi_cs_control(u32 command) } struct pl022_config_chip ab4500_chip_info = { - .lbm = LOOPBACK_DISABLED, .com_mode = INTERRUPT_TRANSFER, .iface = SSP_INTERFACE_MOTOROLA_SPI, /* we can act as master only */ .hierarchy = SSP_MASTER, .slave_tx_disable = 0, - .endian_rx = SSP_RX_MSB, - .endian_tx = SSP_TX_MSB, - .data_size = SSP_DATA_BITS_24, .rx_lev_trig = SSP_RX_1_OR_MORE_ELEM, .tx_lev_trig = SSP_TX_1_OR_MORE_EMPTY_LOC, - .clk_phase = SSP_CLK_SECOND_EDGE, - .clk_pol = SSP_CLK_POL_IDLE_HIGH, .cs_control = ab4500_spi_cs_control, }; @@ -103,7 +97,7 @@ static struct spi_board_info ab8500_spi_devices[] = { .max_speed_hz = 12000000, .bus_num = 0, .chip_select = 0, - .mode = SPI_MODE_0, + .mode = SPI_MODE_3, .irq = IRQ_DB8500_AB8500, }, }; diff --git a/arch/arm/oprofile/Makefile b/arch/arm/oprofile/Makefile index e666eafed152..b2215c61cdf0 100644 --- a/arch/arm/oprofile/Makefile +++ b/arch/arm/oprofile/Makefile @@ -6,4 +6,8 @@ DRIVER_OBJS = $(addprefix ../../../drivers/oprofile/, \ oprofilefs.o oprofile_stats.o \ timer_int.o ) +ifeq ($(CONFIG_HW_PERF_EVENTS),y) +DRIVER_OBJS += $(addprefix ../../../drivers/oprofile/, oprofile_perf.o) +endif + oprofile-y := $(DRIVER_OBJS) common.o diff --git a/arch/arm/oprofile/common.c b/arch/arm/oprofile/common.c index 72e09eb642dd..8aa974491dfc 100644 --- a/arch/arm/oprofile/common.c +++ b/arch/arm/oprofile/common.c @@ -25,139 +25,10 @@ #include <asm/ptrace.h> #ifdef CONFIG_HW_PERF_EVENTS -/* - * Per performance monitor configuration as set via oprofilefs. - */ -struct op_counter_config { - unsigned long count; - unsigned long enabled; - unsigned long event; - unsigned long unit_mask; - unsigned long kernel; - unsigned long user; - struct perf_event_attr attr; -}; - -static int op_arm_enabled; -static DEFINE_MUTEX(op_arm_mutex); - -static struct op_counter_config *counter_config; -static struct perf_event **perf_events[nr_cpumask_bits]; -static int perf_num_counters; - -/* - * Overflow callback for oprofile. - */ -static void op_overflow_handler(struct perf_event *event, int unused, - struct perf_sample_data *data, struct pt_regs *regs) +char *op_name_from_perf_id(void) { - int id; - u32 cpu = smp_processor_id(); - - for (id = 0; id < perf_num_counters; ++id) - if (perf_events[cpu][id] == event) - break; - - if (id != perf_num_counters) - oprofile_add_sample(regs, id); - else - pr_warning("oprofile: ignoring spurious overflow " - "on cpu %u\n", cpu); -} - -/* - * Called by op_arm_setup to create perf attributes to mirror the oprofile - * settings in counter_config. Attributes are created as `pinned' events and - * so are permanently scheduled on the PMU. - */ -static void op_perf_setup(void) -{ - int i; - u32 size = sizeof(struct perf_event_attr); - struct perf_event_attr *attr; - - for (i = 0; i < perf_num_counters; ++i) { - attr = &counter_config[i].attr; - memset(attr, 0, size); - attr->type = PERF_TYPE_RAW; - attr->size = size; - attr->config = counter_config[i].event; - attr->sample_period = counter_config[i].count; - attr->pinned = 1; - } -} - -static int op_create_counter(int cpu, int event) -{ - int ret = 0; - struct perf_event *pevent; - - if (!counter_config[event].enabled || (perf_events[cpu][event] != NULL)) - return ret; - - pevent = perf_event_create_kernel_counter(&counter_config[event].attr, - cpu, -1, - op_overflow_handler); - - if (IS_ERR(pevent)) { - ret = PTR_ERR(pevent); - } else if (pevent->state != PERF_EVENT_STATE_ACTIVE) { - perf_event_release_kernel(pevent); - pr_warning("oprofile: failed to enable event %d " - "on CPU %d\n", event, cpu); - ret = -EBUSY; - } else { - perf_events[cpu][event] = pevent; - } - - return ret; -} + enum arm_perf_pmu_ids id = armpmu_get_pmu_id(); -static void op_destroy_counter(int cpu, int event) -{ - struct perf_event *pevent = perf_events[cpu][event]; - - if (pevent) { - perf_event_release_kernel(pevent); - perf_events[cpu][event] = NULL; - } -} - -/* - * Called by op_arm_start to create active perf events based on the - * perviously configured attributes. - */ -static int op_perf_start(void) -{ - int cpu, event, ret = 0; - - for_each_online_cpu(cpu) { - for (event = 0; event < perf_num_counters; ++event) { - ret = op_create_counter(cpu, event); - if (ret) - goto out; - } - } - -out: - return ret; -} - -/* - * Called by op_arm_stop at the end of a profiling run. - */ -static void op_perf_stop(void) -{ - int cpu, event; - - for_each_online_cpu(cpu) - for (event = 0; event < perf_num_counters; ++event) - op_destroy_counter(cpu, event); -} - - -static char *op_name_from_perf_id(enum arm_perf_pmu_ids id) -{ switch (id) { case ARM_PERF_PMU_ID_XSCALE1: return "arm/xscale1"; @@ -176,116 +47,6 @@ static char *op_name_from_perf_id(enum arm_perf_pmu_ids id) } } -static int op_arm_create_files(struct super_block *sb, struct dentry *root) -{ - unsigned int i; - - for (i = 0; i < perf_num_counters; i++) { - struct dentry *dir; - char buf[4]; - - snprintf(buf, sizeof buf, "%d", i); - dir = oprofilefs_mkdir(sb, root, buf); - oprofilefs_create_ulong(sb, dir, "enabled", &counter_config[i].enabled); - oprofilefs_create_ulong(sb, dir, "event", &counter_config[i].event); - oprofilefs_create_ulong(sb, dir, "count", &counter_config[i].count); - oprofilefs_create_ulong(sb, dir, "unit_mask", &counter_config[i].unit_mask); - oprofilefs_create_ulong(sb, dir, "kernel", &counter_config[i].kernel); - oprofilefs_create_ulong(sb, dir, "user", &counter_config[i].user); - } - - return 0; -} - -static int op_arm_setup(void) -{ - spin_lock(&oprofilefs_lock); - op_perf_setup(); - spin_unlock(&oprofilefs_lock); - return 0; -} - -static int op_arm_start(void) -{ - int ret = -EBUSY; - - mutex_lock(&op_arm_mutex); - if (!op_arm_enabled) { - ret = 0; - op_perf_start(); - op_arm_enabled = 1; - } - mutex_unlock(&op_arm_mutex); - return ret; -} - -static void op_arm_stop(void) -{ - mutex_lock(&op_arm_mutex); - if (op_arm_enabled) - op_perf_stop(); - op_arm_enabled = 0; - mutex_unlock(&op_arm_mutex); -} - -#ifdef CONFIG_PM -static int op_arm_suspend(struct platform_device *dev, pm_message_t state) -{ - mutex_lock(&op_arm_mutex); - if (op_arm_enabled) - op_perf_stop(); - mutex_unlock(&op_arm_mutex); - return 0; -} - -static int op_arm_resume(struct platform_device *dev) -{ - mutex_lock(&op_arm_mutex); - if (op_arm_enabled && op_perf_start()) - op_arm_enabled = 0; - mutex_unlock(&op_arm_mutex); - return 0; -} - -static struct platform_driver oprofile_driver = { - .driver = { - .name = "arm-oprofile", - }, - .resume = op_arm_resume, - .suspend = op_arm_suspend, -}; - -static struct platform_device *oprofile_pdev; - -static int __init init_driverfs(void) -{ - int ret; - - ret = platform_driver_register(&oprofile_driver); - if (ret) - goto out; - - oprofile_pdev = platform_device_register_simple( - oprofile_driver.driver.name, 0, NULL, 0); - if (IS_ERR(oprofile_pdev)) { - ret = PTR_ERR(oprofile_pdev); - platform_driver_unregister(&oprofile_driver); - } - -out: - return ret; -} - -static void exit_driverfs(void) -{ - platform_device_unregister(oprofile_pdev); - platform_driver_unregister(&oprofile_driver); -} -#else -static int __init init_driverfs(void) { return 0; } -#define exit_driverfs() do { } while (0) -#endif /* CONFIG_PM */ - static int report_trace(struct stackframe *frame, void *d) { unsigned int *depth = d; @@ -350,74 +111,14 @@ static void arm_backtrace(struct pt_regs * const regs, unsigned int depth) int __init oprofile_arch_init(struct oprofile_operations *ops) { - int cpu, ret = 0; - - perf_num_counters = armpmu_get_max_events(); - - counter_config = kcalloc(perf_num_counters, - sizeof(struct op_counter_config), GFP_KERNEL); - - if (!counter_config) { - pr_info("oprofile: failed to allocate %d " - "counters\n", perf_num_counters); - return -ENOMEM; - } - - ret = init_driverfs(); - if (ret) { - kfree(counter_config); - counter_config = NULL; - return ret; - } - - for_each_possible_cpu(cpu) { - perf_events[cpu] = kcalloc(perf_num_counters, - sizeof(struct perf_event *), GFP_KERNEL); - if (!perf_events[cpu]) { - pr_info("oprofile: failed to allocate %d perf events " - "for cpu %d\n", perf_num_counters, cpu); - while (--cpu >= 0) - kfree(perf_events[cpu]); - return -ENOMEM; - } - } - ops->backtrace = arm_backtrace; - ops->create_files = op_arm_create_files; - ops->setup = op_arm_setup; - ops->start = op_arm_start; - ops->stop = op_arm_stop; - ops->shutdown = op_arm_stop; - ops->cpu_type = op_name_from_perf_id(armpmu_get_pmu_id()); - - if (!ops->cpu_type) - ret = -ENODEV; - else - pr_info("oprofile: using %s\n", ops->cpu_type); - return ret; + return oprofile_perf_init(ops); } -void oprofile_arch_exit(void) +void __exit oprofile_arch_exit(void) { - int cpu, id; - struct perf_event *event; - - if (*perf_events) { - for_each_possible_cpu(cpu) { - for (id = 0; id < perf_num_counters; ++id) { - event = perf_events[cpu][id]; - if (event != NULL) - perf_event_release_kernel(event); - } - kfree(perf_events[cpu]); - } - } - - if (counter_config) { - kfree(counter_config); - exit_driverfs(); - } + oprofile_perf_exit(); } #else int __init oprofile_arch_init(struct oprofile_operations *ops) @@ -425,5 +126,5 @@ int __init oprofile_arch_init(struct oprofile_operations *ops) pr_info("oprofile: hardware counters not available\n"); return -ENODEV; } -void oprofile_arch_exit(void) {} +void __exit oprofile_arch_exit(void) {} #endif /* CONFIG_HW_PERF_EVENTS */ diff --git a/arch/arm/plat-samsung/include/plat/s3c64xx-spi.h b/arch/arm/plat-samsung/include/plat/s3c64xx-spi.h index ae8e802bdca8..ff1a561b326e 100644 --- a/arch/arm/plat-samsung/include/plat/s3c64xx-spi.h +++ b/arch/arm/plat-samsung/include/plat/s3c64xx-spi.h @@ -32,6 +32,8 @@ struct s3c64xx_spi_csinfo { * struct s3c64xx_spi_info - SPI Controller defining structure * @src_clk_nr: Clock source index for the CLK_CFG[SPI_CLKSEL] field. * @src_clk_name: Platform name of the corresponding clock. + * @clk_from_cmu: If the SPI clock/prescalar control block is present + * by the platform's clock-management-unit and not in SPI controller. * @num_cs: Number of CS this controller emulates. * @cfg_gpio: Configure pins for this SPI controller. * @fifo_lvl_mask: All tx fifo_lvl fields start at offset-6 @@ -41,6 +43,7 @@ struct s3c64xx_spi_csinfo { struct s3c64xx_spi_info { int src_clk_nr; char *src_clk_name; + bool clk_from_cmu; int num_cs; diff --git a/arch/avr32/include/asm/irqflags.h b/arch/avr32/include/asm/irqflags.h index 93570daac38a..006e9487372d 100644 --- a/arch/avr32/include/asm/irqflags.h +++ b/arch/avr32/include/asm/irqflags.h @@ -8,16 +8,14 @@ #ifndef __ASM_AVR32_IRQFLAGS_H #define __ASM_AVR32_IRQFLAGS_H +#include <linux/types.h> #include <asm/sysreg.h> -static inline unsigned long __raw_local_save_flags(void) +static inline unsigned long arch_local_save_flags(void) { return sysreg_read(SR); } -#define raw_local_save_flags(x) \ - do { (x) = __raw_local_save_flags(); } while (0) - /* * This will restore ALL status register flags, not only the interrupt * mask flag. @@ -25,44 +23,39 @@ static inline unsigned long __raw_local_save_flags(void) * The empty asm statement informs the compiler of this fact while * also serving as a barrier. */ -static inline void raw_local_irq_restore(unsigned long flags) +static inline void arch_local_irq_restore(unsigned long flags) { sysreg_write(SR, flags); asm volatile("" : : : "memory", "cc"); } -static inline void raw_local_irq_disable(void) +static inline void arch_local_irq_disable(void) { asm volatile("ssrf %0" : : "n"(SYSREG_GM_OFFSET) : "memory"); } -static inline void raw_local_irq_enable(void) +static inline void arch_local_irq_enable(void) { asm volatile("csrf %0" : : "n"(SYSREG_GM_OFFSET) : "memory"); } -static inline int raw_irqs_disabled_flags(unsigned long flags) +static inline bool arch_irqs_disabled_flags(unsigned long flags) { return (flags & SYSREG_BIT(GM)) != 0; } -static inline int raw_irqs_disabled(void) +static inline bool arch_irqs_disabled(void) { - unsigned long flags = __raw_local_save_flags(); - - return raw_irqs_disabled_flags(flags); + return arch_irqs_disabled_flags(arch_local_save_flags()); } -static inline unsigned long __raw_local_irq_save(void) +static inline unsigned long arch_local_irq_save(void) { - unsigned long flags = __raw_local_save_flags(); + unsigned long flags = arch_local_save_flags(); - raw_local_irq_disable(); + arch_local_irq_disable(); return flags; } -#define raw_local_irq_save(flags) \ - do { (flags) = __raw_local_irq_save(); } while (0) - #endif /* __ASM_AVR32_IRQFLAGS_H */ diff --git a/arch/blackfin/include/asm/bfin5xx_spi.h b/arch/blackfin/include/asm/bfin5xx_spi.h index ed4f8c6db0cd..4223cf08ce83 100644 --- a/arch/blackfin/include/asm/bfin5xx_spi.h +++ b/arch/blackfin/include/asm/bfin5xx_spi.h @@ -11,26 +11,17 @@ #define MIN_SPI_BAUD_VAL 2 -#define SPI_READ 0 -#define SPI_WRITE 1 - -#define SPI_CTRL_OFF 0x0 -#define SPI_FLAG_OFF 0x4 -#define SPI_STAT_OFF 0x8 -#define SPI_TXBUFF_OFF 0xc -#define SPI_RXBUFF_OFF 0x10 -#define SPI_BAUD_OFF 0x14 -#define SPI_SHAW_OFF 0x18 - - #define BIT_CTL_ENABLE 0x4000 #define BIT_CTL_OPENDRAIN 0x2000 #define BIT_CTL_MASTER 0x1000 -#define BIT_CTL_POLAR 0x0800 -#define BIT_CTL_PHASE 0x0400 -#define BIT_CTL_BITORDER 0x0200 +#define BIT_CTL_CPOL 0x0800 +#define BIT_CTL_CPHA 0x0400 +#define BIT_CTL_LSBF 0x0200 #define BIT_CTL_WORDSIZE 0x0100 -#define BIT_CTL_MISOENABLE 0x0020 +#define BIT_CTL_EMISO 0x0020 +#define BIT_CTL_PSSE 0x0010 +#define BIT_CTL_GM 0x0008 +#define BIT_CTL_SZ 0x0004 #define BIT_CTL_RXMOD 0x0000 #define BIT_CTL_TXMOD 0x0001 #define BIT_CTL_TIMOD_DMA_TX 0x0003 @@ -50,61 +41,7 @@ #define BIT_STU_SENDOVER 0x0001 #define BIT_STU_RECVFULL 0x0020 -#define CFG_SPI_ENABLE 1 -#define CFG_SPI_DISABLE 0 - -#define CFG_SPI_OUTENABLE 1 -#define CFG_SPI_OUTDISABLE 0 - -#define CFG_SPI_ACTLOW 1 -#define CFG_SPI_ACTHIGH 0 - -#define CFG_SPI_PHASESTART 1 -#define CFG_SPI_PHASEMID 0 - -#define CFG_SPI_MASTER 1 -#define CFG_SPI_SLAVE 0 - -#define CFG_SPI_SENELAST 0 -#define CFG_SPI_SENDZERO 1 - -#define CFG_SPI_RCVFLUSH 1 -#define CFG_SPI_RCVDISCARD 0 - -#define CFG_SPI_LSBFIRST 1 -#define CFG_SPI_MSBFIRST 0 - -#define CFG_SPI_WORDSIZE16 1 -#define CFG_SPI_WORDSIZE8 0 - -#define CFG_SPI_MISOENABLE 1 -#define CFG_SPI_MISODISABLE 0 - -#define CFG_SPI_READ 0x00 -#define CFG_SPI_WRITE 0x01 -#define CFG_SPI_DMAREAD 0x02 -#define CFG_SPI_DMAWRITE 0x03 - -#define CFG_SPI_CSCLEARALL 0 -#define CFG_SPI_CHIPSEL1 1 -#define CFG_SPI_CHIPSEL2 2 -#define CFG_SPI_CHIPSEL3 3 -#define CFG_SPI_CHIPSEL4 4 -#define CFG_SPI_CHIPSEL5 5 -#define CFG_SPI_CHIPSEL6 6 -#define CFG_SPI_CHIPSEL7 7 - -#define CFG_SPI_CS1VALUE 1 -#define CFG_SPI_CS2VALUE 2 -#define CFG_SPI_CS3VALUE 3 -#define CFG_SPI_CS4VALUE 4 -#define CFG_SPI_CS5VALUE 5 -#define CFG_SPI_CS6VALUE 6 -#define CFG_SPI_CS7VALUE 7 - -#define CMD_SPI_SET_BAUDRATE 2 -#define CMD_SPI_GET_SYSTEMCLOCK 25 -#define CMD_SPI_SET_WRITECONTINUOUS 26 +#define MAX_CTRL_CS 8 /* cs in spi controller */ /* device.platform_data for SSP controller devices */ struct bfin5xx_spi_master { @@ -120,9 +57,7 @@ struct bfin5xx_spi_chip { u16 ctl_reg; u8 enable_dma; u8 bits_per_word; - u8 cs_change_per_word; u16 cs_chg_udelay; /* Some devices require 16-bit delays */ - u32 cs_gpio; /* Value to send if no TX value is supplied, usually 0x0 or 0xFFFF */ u16 idle_tx_val; u8 pio_interrupt; /* Enable spi data irq */ diff --git a/arch/blackfin/include/asm/ipipe.h b/arch/blackfin/include/asm/ipipe.h index d3b40449ca0e..40f94a704c02 100644 --- a/arch/blackfin/include/asm/ipipe.h +++ b/arch/blackfin/include/asm/ipipe.h @@ -49,7 +49,7 @@ #define prepare_arch_switch(next) \ do { \ ipipe_schedule_notify(current, next); \ - local_irq_disable_hw(); \ + hard_local_irq_disable(); \ } while (0) #define task_hijacked(p) \ @@ -57,7 +57,7 @@ do { \ int __x__ = __ipipe_root_domain_p; \ __clear_bit(IPIPE_SYNC_FLAG, &ipipe_root_cpudom_var(status)); \ if (__x__) \ - local_irq_enable_hw(); \ + hard_local_irq_enable(); \ !__x__; \ }) @@ -167,7 +167,7 @@ static inline unsigned long __ipipe_ffnz(unsigned long ul) #define __ipipe_run_isr(ipd, irq) \ do { \ if (!__ipipe_pipeline_head_p(ipd)) \ - local_irq_enable_hw(); \ + hard_local_irq_enable(); \ if (ipd == ipipe_root_domain) { \ if (unlikely(ipipe_virtual_irq_p(irq))) { \ irq_enter(); \ @@ -183,7 +183,7 @@ static inline unsigned long __ipipe_ffnz(unsigned long ul) __ipipe_run_irqtail(); \ __set_bit(IPIPE_SYNC_FLAG, &ipipe_cpudom_var(ipd, status)); \ } \ - local_irq_disable_hw(); \ + hard_local_irq_disable(); \ } while (0) #define __ipipe_syscall_watched_p(p, sc) \ diff --git a/arch/blackfin/include/asm/irqflags.h b/arch/blackfin/include/asm/irqflags.h index 813a1af3e865..41c4d70544ef 100644 --- a/arch/blackfin/include/asm/irqflags.h +++ b/arch/blackfin/include/asm/irqflags.h @@ -8,6 +8,8 @@ #ifndef __ASM_BFIN_IRQFLAGS_H__ #define __ASM_BFIN_IRQFLAGS_H__ +#include <mach/blackfin.h> + #ifdef CONFIG_SMP # include <asm/pda.h> # include <asm/processor.h> @@ -31,54 +33,108 @@ static inline unsigned long bfin_cli(void) return flags; } -#ifdef CONFIG_IPIPE - -#include <linux/compiler.h> -#include <linux/ipipe_base.h> -#include <linux/ipipe_trace.h> - #ifdef CONFIG_DEBUG_HWERR # define bfin_no_irqs 0x3f #else # define bfin_no_irqs 0x1f #endif -#define raw_local_irq_disable() \ - do { \ - ipipe_check_context(ipipe_root_domain); \ - __ipipe_stall_root(); \ - barrier(); \ - } while (0) +/*****************************************************************************/ +/* + * Hard, untraced CPU interrupt flag manipulation and access. + */ +static inline void __hard_local_irq_disable(void) +{ + bfin_cli(); +} + +static inline void __hard_local_irq_enable(void) +{ + bfin_sti(bfin_irq_flags); +} + +static inline unsigned long hard_local_save_flags(void) +{ + return bfin_read_IMASK(); +} -#define raw_local_irq_enable() \ - do { \ - barrier(); \ - ipipe_check_context(ipipe_root_domain); \ - __ipipe_unstall_root(); \ - } while (0) +static inline unsigned long __hard_local_irq_save(void) +{ + unsigned long flags; + flags = bfin_cli(); +#ifdef CONFIG_DEBUG_HWERR + bfin_sti(0x3f); +#endif + return flags; +} + +static inline int hard_irqs_disabled_flags(unsigned long flags) +{ + return (flags & ~0x3f) == 0; +} + +static inline int hard_irqs_disabled(void) +{ + unsigned long flags = hard_local_save_flags(); + return hard_irqs_disabled_flags(flags); +} + +static inline void __hard_local_irq_restore(unsigned long flags) +{ + if (!hard_irqs_disabled_flags(flags)) + __hard_local_irq_enable(); +} + +/*****************************************************************************/ +/* + * Interrupt pipe handling. + */ +#ifdef CONFIG_IPIPE + +#include <linux/compiler.h> +#include <linux/ipipe_base.h> +#include <linux/ipipe_trace.h> + +/* + * Interrupt pipe interface to linux/irqflags.h. + */ +static inline void arch_local_irq_disable(void) +{ + ipipe_check_context(ipipe_root_domain); + __ipipe_stall_root(); + barrier(); +} -#define raw_local_save_flags_ptr(x) \ - do { \ - *(x) = __ipipe_test_root() ? bfin_no_irqs : bfin_irq_flags; \ - } while (0) +static inline void arch_local_irq_enable(void) +{ + barrier(); + ipipe_check_context(ipipe_root_domain); + __ipipe_unstall_root(); +} -#define raw_local_save_flags(x) raw_local_save_flags_ptr(&(x)) +static inline unsigned long arch_local_save_flags(void) +{ + return __ipipe_test_root() ? bfin_no_irqs : bfin_irq_flags; +} -#define raw_irqs_disabled_flags(x) ((x) == bfin_no_irqs) +static inline int arch_irqs_disabled_flags(unsigned long flags) +{ + return flags == bfin_no_irqs; +} -#define raw_local_irq_save_ptr(x) \ - do { \ - *(x) = __ipipe_test_and_stall_root() ? bfin_no_irqs : bfin_irq_flags; \ - barrier(); \ - } while (0) +static inline void arch_local_irq_save_ptr(unsigned long *_flags) +{ + x = __ipipe_test_and_stall_root() ? bfin_no_irqs : bfin_irq_flags; + barrier(); +} -#define raw_local_irq_save(x) \ - do { \ - ipipe_check_context(ipipe_root_domain); \ - raw_local_irq_save_ptr(&(x)); \ - } while (0) +static inline unsigned long arch_local_irq_save(void) +{ + ipipe_check_context(ipipe_root_domain); + return __hard_local_irq_save(); +} -static inline unsigned long raw_mangle_irq_bits(int virt, unsigned long real) +static inline unsigned long arch_mangle_irq_bits(int virt, unsigned long real) { /* * Merge virtual and real interrupt mask bits into a single @@ -87,130 +143,79 @@ static inline unsigned long raw_mangle_irq_bits(int virt, unsigned long real) return (real & ~(1 << 31)) | ((virt != 0) << 31); } -static inline int raw_demangle_irq_bits(unsigned long *x) +static inline int arch_demangle_irq_bits(unsigned long *x) { int virt = (*x & (1 << 31)) != 0; *x &= ~(1L << 31); return virt; } -static inline void local_irq_disable_hw_notrace(void) +/* + * Interface to various arch routines that may be traced. + */ +#ifdef CONFIG_IPIPE_TRACE_IRQSOFF +static inline void hard_local_irq_disable(void) { - bfin_cli(); + if (!hard_irqs_disabled()) { + __hard_local_irq_disable(); + ipipe_trace_begin(0x80000000); + } } -static inline void local_irq_enable_hw_notrace(void) +static inline void hard_local_irq_enable(void) { - bfin_sti(bfin_irq_flags); + if (hard_irqs_disabled()) { + ipipe_trace_end(0x80000000); + __hard_local_irq_enable(); + } } -#define local_save_flags_hw(flags) \ - do { \ - (flags) = bfin_read_IMASK(); \ - } while (0) - -#define irqs_disabled_flags_hw(flags) (((flags) & ~0x3f) == 0) - -#define irqs_disabled_hw() \ - ({ \ - unsigned long flags; \ - local_save_flags_hw(flags); \ - irqs_disabled_flags_hw(flags); \ - }) - -static inline void local_irq_save_ptr_hw(unsigned long *flags) +static inline unsigned long hard_local_irq_save(void) { - *flags = bfin_cli(); -#ifdef CONFIG_DEBUG_HWERR - bfin_sti(0x3f); -#endif + unsigned long flags = hard_local_save_flags(); + if (!hard_irqs_disabled_flags(flags)) { + __hard_local_irq_disable(); + ipipe_trace_begin(0x80000001); + } + return flags; } -#define local_irq_save_hw_notrace(flags) \ - do { \ - local_irq_save_ptr_hw(&(flags)); \ - } while (0) - -static inline void local_irq_restore_hw_notrace(unsigned long flags) +static inline void hard_local_irq_restore(unsigned long flags) { - if (!irqs_disabled_flags_hw(flags)) - local_irq_enable_hw_notrace(); + if (!hard_irqs_disabled_flags(flags)) { + ipipe_trace_end(0x80000001); + __hard_local_irq_enable(); + } } -#ifdef CONFIG_IPIPE_TRACE_IRQSOFF -# define local_irq_disable_hw() \ - do { \ - if (!irqs_disabled_hw()) { \ - local_irq_disable_hw_notrace(); \ - ipipe_trace_begin(0x80000000); \ - } \ - } while (0) -# define local_irq_enable_hw() \ - do { \ - if (irqs_disabled_hw()) { \ - ipipe_trace_end(0x80000000); \ - local_irq_enable_hw_notrace(); \ - } \ - } while (0) -# define local_irq_save_hw(flags) \ - do { \ - local_save_flags_hw(flags); \ - if (!irqs_disabled_flags_hw(flags)) { \ - local_irq_disable_hw_notrace(); \ - ipipe_trace_begin(0x80000001); \ - } \ - } while (0) -# define local_irq_restore_hw(flags) \ - do { \ - if (!irqs_disabled_flags_hw(flags)) { \ - ipipe_trace_end(0x80000001); \ - local_irq_enable_hw_notrace(); \ - } \ - } while (0) #else /* !CONFIG_IPIPE_TRACE_IRQSOFF */ -# define local_irq_disable_hw() local_irq_disable_hw_notrace() -# define local_irq_enable_hw() local_irq_enable_hw_notrace() -# define local_irq_save_hw(flags) local_irq_save_hw_notrace(flags) -# define local_irq_restore_hw(flags) local_irq_restore_hw_notrace(flags) +# define hard_local_irq_disable() __hard_local_irq_disable() +# define hard_local_irq_enable() __hard_local_irq_enable() +# define hard_local_irq_save() __hard_local_irq_save() +# define hard_local_irq_restore(flags) __hard_local_irq_restore(flags) #endif /* !CONFIG_IPIPE_TRACE_IRQSOFF */ #else /* CONFIG_IPIPE */ -static inline void raw_local_irq_disable(void) -{ - bfin_cli(); -} -static inline void raw_local_irq_enable(void) -{ - bfin_sti(bfin_irq_flags); -} - -#define raw_local_save_flags(flags) do { (flags) = bfin_read_IMASK(); } while (0) - -#define raw_irqs_disabled_flags(flags) (((flags) & ~0x3f) == 0) +/* + * Direct interface to linux/irqflags.h. + */ +#define arch_local_save_flags() hard_local_save_flags() +#define arch_local_irq_save(flags) __hard_local_irq_save() +#define arch_local_irq_restore(flags) __hard_local_irq_restore(flags) +#define arch_local_irq_enable() __hard_local_irq_enable() +#define arch_local_irq_disable() __hard_local_irq_disable() +#define arch_irqs_disabled_flags(flags) hard_irqs_disabled_flags(flags) +#define arch_irqs_disabled() hard_irqs_disabled() -static inline unsigned long __raw_local_irq_save(void) -{ - unsigned long flags = bfin_cli(); -#ifdef CONFIG_DEBUG_HWERR - bfin_sti(0x3f); -#endif - return flags; -} -#define raw_local_irq_save(flags) do { (flags) = __raw_local_irq_save(); } while (0) +/* + * Interface to various arch routines that may be traced. + */ +#define hard_local_irq_save() __hard_local_irq_save() +#define hard_local_irq_restore(flags) __hard_local_irq_restore(flags) +#define hard_local_irq_enable() __hard_local_irq_enable() +#define hard_local_irq_disable() __hard_local_irq_disable() -#define local_irq_save_hw(flags) raw_local_irq_save(flags) -#define local_irq_restore_hw(flags) raw_local_irq_restore(flags) -#define local_irq_enable_hw() raw_local_irq_enable() -#define local_irq_disable_hw() raw_local_irq_disable() -#define irqs_disabled_hw() irqs_disabled() #endif /* !CONFIG_IPIPE */ - -static inline void raw_local_irq_restore(unsigned long flags) -{ - if (!raw_irqs_disabled_flags(flags)) - raw_local_irq_enable(); -} - #endif diff --git a/arch/blackfin/include/asm/mmu_context.h b/arch/blackfin/include/asm/mmu_context.h index e1a9b4624f91..3828c70e7a2e 100644 --- a/arch/blackfin/include/asm/mmu_context.h +++ b/arch/blackfin/include/asm/mmu_context.h @@ -97,8 +97,8 @@ static inline void __switch_mm(struct mm_struct *prev_mm, struct mm_struct *next } #ifdef CONFIG_IPIPE -#define lock_mm_switch(flags) local_irq_save_hw_cond(flags) -#define unlock_mm_switch(flags) local_irq_restore_hw_cond(flags) +#define lock_mm_switch(flags) flags = hard_local_irq_save_cond() +#define unlock_mm_switch(flags) hard_local_irq_restore_cond(flags) #else #define lock_mm_switch(flags) do { (void)(flags); } while (0) #define unlock_mm_switch(flags) do { (void)(flags); } while (0) @@ -205,9 +205,9 @@ static inline void destroy_context(struct mm_struct *mm) } #define ipipe_mm_switch_protect(flags) \ - local_irq_save_hw_cond(flags) + flags = hard_local_irq_save_cond() #define ipipe_mm_switch_unprotect(flags) \ - local_irq_restore_hw_cond(flags) + hard_local_irq_restore_cond(flags) #endif diff --git a/arch/blackfin/include/asm/system.h b/arch/blackfin/include/asm/system.h index dde19b1d25f5..19e2c7c3e63a 100644 --- a/arch/blackfin/include/asm/system.h +++ b/arch/blackfin/include/asm/system.h @@ -117,7 +117,7 @@ static inline unsigned long __xchg(unsigned long x, volatile void *ptr, unsigned long tmp = 0; unsigned long flags; - local_irq_save_hw(flags); + flags = hard_local_irq_save(); switch (size) { case 1: @@ -139,7 +139,7 @@ static inline unsigned long __xchg(unsigned long x, volatile void *ptr, : "=&d" (tmp) : "d" (x), "m" (*__xg(ptr)) : "memory"); break; } - local_irq_restore_hw(flags); + hard_local_irq_restore(flags); return tmp; } diff --git a/arch/blackfin/kernel/bfin_gpio.c b/arch/blackfin/kernel/bfin_gpio.c index dc07ed08b37f..ca1c1f9debd6 100644 --- a/arch/blackfin/kernel/bfin_gpio.c +++ b/arch/blackfin/kernel/bfin_gpio.c @@ -349,13 +349,13 @@ inline void portmux_setup(unsigned short per) void set_gpio_ ## name(unsigned gpio, unsigned short arg) \ { \ unsigned long flags; \ - local_irq_save_hw(flags); \ + flags = hard_local_irq_save(); \ if (arg) \ gpio_array[gpio_bank(gpio)]->name |= gpio_bit(gpio); \ else \ gpio_array[gpio_bank(gpio)]->name &= ~gpio_bit(gpio); \ AWA_DUMMY_READ(name); \ - local_irq_restore_hw(flags); \ + hard_local_irq_restore(flags); \ } \ EXPORT_SYMBOL(set_gpio_ ## name); @@ -371,14 +371,14 @@ void set_gpio_ ## name(unsigned gpio, unsigned short arg) \ { \ unsigned long flags; \ if (ANOMALY_05000311 || ANOMALY_05000323) \ - local_irq_save_hw(flags); \ + flags = hard_local_irq_save(); \ if (arg) \ gpio_array[gpio_bank(gpio)]->name ## _set = gpio_bit(gpio); \ else \ gpio_array[gpio_bank(gpio)]->name ## _clear = gpio_bit(gpio); \ if (ANOMALY_05000311 || ANOMALY_05000323) { \ AWA_DUMMY_READ(name); \ - local_irq_restore_hw(flags); \ + hard_local_irq_restore(flags); \ } \ } \ EXPORT_SYMBOL(set_gpio_ ## name); @@ -391,11 +391,11 @@ void set_gpio_toggle(unsigned gpio) { unsigned long flags; if (ANOMALY_05000311 || ANOMALY_05000323) - local_irq_save_hw(flags); + flags = hard_local_irq_save(); gpio_array[gpio_bank(gpio)]->toggle = gpio_bit(gpio); if (ANOMALY_05000311 || ANOMALY_05000323) { AWA_DUMMY_READ(toggle); - local_irq_restore_hw(flags); + hard_local_irq_restore(flags); } } EXPORT_SYMBOL(set_gpio_toggle); @@ -408,11 +408,11 @@ void set_gpiop_ ## name(unsigned gpio, unsigned short arg) \ { \ unsigned long flags; \ if (ANOMALY_05000311 || ANOMALY_05000323) \ - local_irq_save_hw(flags); \ + flags = hard_local_irq_save(); \ gpio_array[gpio_bank(gpio)]->name = arg; \ if (ANOMALY_05000311 || ANOMALY_05000323) { \ AWA_DUMMY_READ(name); \ - local_irq_restore_hw(flags); \ + hard_local_irq_restore(flags); \ } \ } \ EXPORT_SYMBOL(set_gpiop_ ## name); @@ -433,11 +433,11 @@ unsigned short get_gpio_ ## name(unsigned gpio) \ unsigned long flags; \ unsigned short ret; \ if (ANOMALY_05000311 || ANOMALY_05000323) \ - local_irq_save_hw(flags); \ + flags = hard_local_irq_save(); \ ret = 0x01 & (gpio_array[gpio_bank(gpio)]->name >> gpio_sub_n(gpio)); \ if (ANOMALY_05000311 || ANOMALY_05000323) { \ AWA_DUMMY_READ(name); \ - local_irq_restore_hw(flags); \ + hard_local_irq_restore(flags); \ } \ return ret; \ } \ @@ -460,11 +460,11 @@ unsigned short get_gpiop_ ## name(unsigned gpio) \ unsigned long flags; \ unsigned short ret; \ if (ANOMALY_05000311 || ANOMALY_05000323) \ - local_irq_save_hw(flags); \ + flags = hard_local_irq_save(); \ ret = (gpio_array[gpio_bank(gpio)]->name); \ if (ANOMALY_05000311 || ANOMALY_05000323) { \ AWA_DUMMY_READ(name); \ - local_irq_restore_hw(flags); \ + hard_local_irq_restore(flags); \ } \ return ret; \ } \ @@ -525,14 +525,14 @@ int gpio_pm_wakeup_ctrl(unsigned gpio, unsigned ctrl) if (check_gpio(gpio) < 0) return -EINVAL; - local_irq_save_hw(flags); + flags = hard_local_irq_save(); if (ctrl) reserve(wakeup, gpio); else unreserve(wakeup, gpio); set_gpio_maskb(gpio, ctrl); - local_irq_restore_hw(flags); + hard_local_irq_restore(flags); return 0; } @@ -690,7 +690,7 @@ int peripheral_request(unsigned short per, const char *label) BUG_ON(ident >= MAX_RESOURCES); - local_irq_save_hw(flags); + flags = hard_local_irq_save(); /* If a pin can be muxed as either GPIO or peripheral, make * sure it is not already a GPIO pin when we request it. @@ -701,7 +701,7 @@ int peripheral_request(unsigned short per, const char *label) printk(KERN_ERR "%s: Peripheral %d is already reserved as GPIO by %s !\n", __func__, ident, get_label(ident)); - local_irq_restore_hw(flags); + hard_local_irq_restore(flags); return -EBUSY; } @@ -730,7 +730,7 @@ int peripheral_request(unsigned short per, const char *label) printk(KERN_ERR "%s: Peripheral %d function %d is already reserved by %s !\n", __func__, ident, P_FUNCT2MUX(per), get_label(ident)); - local_irq_restore_hw(flags); + hard_local_irq_restore(flags); return -EBUSY; } } @@ -741,7 +741,7 @@ int peripheral_request(unsigned short per, const char *label) portmux_setup(per); port_setup(ident, PERIPHERAL_USAGE); - local_irq_restore_hw(flags); + hard_local_irq_restore(flags); set_label(ident, label); return 0; @@ -780,10 +780,10 @@ void peripheral_free(unsigned short per) if (!(per & P_DEFINED)) return; - local_irq_save_hw(flags); + flags = hard_local_irq_save(); if (unlikely(!is_reserved(peri, ident, 0))) { - local_irq_restore_hw(flags); + hard_local_irq_restore(flags); return; } @@ -794,7 +794,7 @@ void peripheral_free(unsigned short per) set_label(ident, "free"); - local_irq_restore_hw(flags); + hard_local_irq_restore(flags); } EXPORT_SYMBOL(peripheral_free); @@ -828,7 +828,7 @@ int bfin_gpio_request(unsigned gpio, const char *label) if (check_gpio(gpio) < 0) return -EINVAL; - local_irq_save_hw(flags); + flags = hard_local_irq_save(); /* * Allow that the identical GPIO can @@ -837,7 +837,7 @@ int bfin_gpio_request(unsigned gpio, const char *label) */ if (cmp_label(gpio, label) == 0) { - local_irq_restore_hw(flags); + hard_local_irq_restore(flags); return 0; } @@ -846,7 +846,7 @@ int bfin_gpio_request(unsigned gpio, const char *label) dump_stack(); printk(KERN_ERR "bfin-gpio: GPIO %d is already reserved by %s !\n", gpio, get_label(gpio)); - local_irq_restore_hw(flags); + hard_local_irq_restore(flags); return -EBUSY; } if (unlikely(is_reserved(peri, gpio, 1))) { @@ -855,7 +855,7 @@ int bfin_gpio_request(unsigned gpio, const char *label) printk(KERN_ERR "bfin-gpio: GPIO %d is already reserved as Peripheral by %s !\n", gpio, get_label(gpio)); - local_irq_restore_hw(flags); + hard_local_irq_restore(flags); return -EBUSY; } if (unlikely(is_reserved(gpio_irq, gpio, 1))) { @@ -871,7 +871,7 @@ int bfin_gpio_request(unsigned gpio, const char *label) reserve(gpio, gpio); set_label(gpio, label); - local_irq_restore_hw(flags); + hard_local_irq_restore(flags); port_setup(gpio, GPIO_USAGE); @@ -888,13 +888,13 @@ void bfin_gpio_free(unsigned gpio) might_sleep(); - local_irq_save_hw(flags); + flags = hard_local_irq_save(); if (unlikely(!is_reserved(gpio, gpio, 0))) { if (system_state == SYSTEM_BOOTING) dump_stack(); gpio_error(gpio); - local_irq_restore_hw(flags); + hard_local_irq_restore(flags); return; } @@ -902,7 +902,7 @@ void bfin_gpio_free(unsigned gpio) set_label(gpio, "free"); - local_irq_restore_hw(flags); + hard_local_irq_restore(flags); } EXPORT_SYMBOL(bfin_gpio_free); @@ -913,7 +913,7 @@ int bfin_special_gpio_request(unsigned gpio, const char *label) { unsigned long flags; - local_irq_save_hw(flags); + flags = hard_local_irq_save(); /* * Allow that the identical GPIO can @@ -922,19 +922,19 @@ int bfin_special_gpio_request(unsigned gpio, const char *label) */ if (cmp_label(gpio, label) == 0) { - local_irq_restore_hw(flags); + hard_local_irq_restore(flags); return 0; } if (unlikely(is_reserved(special_gpio, gpio, 1))) { - local_irq_restore_hw(flags); + hard_local_irq_restore(flags); printk(KERN_ERR "bfin-gpio: GPIO %d is already reserved by %s !\n", gpio, get_label(gpio)); return -EBUSY; } if (unlikely(is_reserved(peri, gpio, 1))) { - local_irq_restore_hw(flags); + hard_local_irq_restore(flags); printk(KERN_ERR "bfin-gpio: GPIO %d is already reserved as Peripheral by %s !\n", gpio, get_label(gpio)); @@ -946,7 +946,7 @@ int bfin_special_gpio_request(unsigned gpio, const char *label) reserve(peri, gpio); set_label(gpio, label); - local_irq_restore_hw(flags); + hard_local_irq_restore(flags); port_setup(gpio, GPIO_USAGE); return 0; @@ -959,18 +959,18 @@ void bfin_special_gpio_free(unsigned gpio) might_sleep(); - local_irq_save_hw(flags); + flags = hard_local_irq_save(); if (unlikely(!is_reserved(special_gpio, gpio, 0))) { gpio_error(gpio); - local_irq_restore_hw(flags); + hard_local_irq_restore(flags); return; } unreserve(special_gpio, gpio); unreserve(peri, gpio); set_label(gpio, "free"); - local_irq_restore_hw(flags); + hard_local_irq_restore(flags); } EXPORT_SYMBOL(bfin_special_gpio_free); #endif @@ -983,7 +983,7 @@ int bfin_gpio_irq_request(unsigned gpio, const char *label) if (check_gpio(gpio) < 0) return -EINVAL; - local_irq_save_hw(flags); + flags = hard_local_irq_save(); if (unlikely(is_reserved(peri, gpio, 1))) { if (system_state == SYSTEM_BOOTING) @@ -991,7 +991,7 @@ int bfin_gpio_irq_request(unsigned gpio, const char *label) printk(KERN_ERR "bfin-gpio: GPIO %d is already reserved as Peripheral by %s !\n", gpio, get_label(gpio)); - local_irq_restore_hw(flags); + hard_local_irq_restore(flags); return -EBUSY; } if (unlikely(is_reserved(gpio, gpio, 1))) @@ -1002,7 +1002,7 @@ int bfin_gpio_irq_request(unsigned gpio, const char *label) reserve(gpio_irq, gpio); set_label(gpio, label); - local_irq_restore_hw(flags); + hard_local_irq_restore(flags); port_setup(gpio, GPIO_USAGE); @@ -1016,13 +1016,13 @@ void bfin_gpio_irq_free(unsigned gpio) if (check_gpio(gpio) < 0) return; - local_irq_save_hw(flags); + flags = hard_local_irq_save(); if (unlikely(!is_reserved(gpio_irq, gpio, 0))) { if (system_state == SYSTEM_BOOTING) dump_stack(); gpio_error(gpio); - local_irq_restore_hw(flags); + hard_local_irq_restore(flags); return; } @@ -1030,7 +1030,7 @@ void bfin_gpio_irq_free(unsigned gpio) set_label(gpio, "free"); - local_irq_restore_hw(flags); + hard_local_irq_restore(flags); } static inline void __bfin_gpio_direction_input(unsigned gpio) @@ -1052,10 +1052,10 @@ int bfin_gpio_direction_input(unsigned gpio) return -EINVAL; } - local_irq_save_hw(flags); + flags = hard_local_irq_save(); __bfin_gpio_direction_input(gpio); AWA_DUMMY_READ(inen); - local_irq_restore_hw(flags); + hard_local_irq_restore(flags); return 0; } @@ -1070,9 +1070,9 @@ void bfin_gpio_irq_prepare(unsigned gpio) port_setup(gpio, GPIO_USAGE); #ifdef CONFIG_BF54x - local_irq_save_hw(flags); + flags = hard_local_irq_save(); __bfin_gpio_direction_input(gpio); - local_irq_restore_hw(flags); + hard_local_irq_restore(flags); #endif } @@ -1094,7 +1094,7 @@ int bfin_gpio_direction_output(unsigned gpio, int value) return -EINVAL; } - local_irq_save_hw(flags); + flags = hard_local_irq_save(); gpio_array[gpio_bank(gpio)]->inen &= ~gpio_bit(gpio); gpio_set_value(gpio, value); @@ -1105,7 +1105,7 @@ int bfin_gpio_direction_output(unsigned gpio, int value) #endif AWA_DUMMY_READ(dir); - local_irq_restore_hw(flags); + hard_local_irq_restore(flags); return 0; } @@ -1120,11 +1120,11 @@ int bfin_gpio_get_value(unsigned gpio) if (unlikely(get_gpio_edge(gpio))) { int ret; - local_irq_save_hw(flags); + flags = hard_local_irq_save(); set_gpio_edge(gpio, 0); ret = get_gpio_data(gpio); set_gpio_edge(gpio, 1); - local_irq_restore_hw(flags); + hard_local_irq_restore(flags); return ret; } else return get_gpio_data(gpio); diff --git a/arch/blackfin/kernel/cplb-mpu/cplbmgr.c b/arch/blackfin/kernel/cplb-mpu/cplbmgr.c index 87b25b1b30ed..8de92299b3ee 100644 --- a/arch/blackfin/kernel/cplb-mpu/cplbmgr.c +++ b/arch/blackfin/kernel/cplb-mpu/cplbmgr.c @@ -318,7 +318,7 @@ void flush_switched_cplbs(unsigned int cpu) nr_cplb_flush[cpu]++; - local_irq_save_hw(flags); + flags = hard_local_irq_save(); _disable_icplb(); for (i = first_switched_icplb; i < MAX_CPLBS; i++) { icplb_tbl[cpu][i].data = 0; @@ -332,7 +332,7 @@ void flush_switched_cplbs(unsigned int cpu) bfin_write32(DCPLB_DATA0 + i * 4, 0); } _enable_dcplb(); - local_irq_restore_hw(flags); + hard_local_irq_restore(flags); } @@ -348,7 +348,7 @@ void set_mask_dcplbs(unsigned long *masks, unsigned int cpu) return; } - local_irq_save_hw(flags); + flags = hard_local_irq_save(); current_rwx_mask[cpu] = masks; if (L2_LENGTH && addr >= L2_START && addr < L2_START + L2_LENGTH) { @@ -373,5 +373,5 @@ void set_mask_dcplbs(unsigned long *masks, unsigned int cpu) addr += PAGE_SIZE; } _enable_dcplb(); - local_irq_restore_hw(flags); + hard_local_irq_restore(flags); } diff --git a/arch/blackfin/kernel/ipipe.c b/arch/blackfin/kernel/ipipe.c index 1a496cd71ba2..3b1da4aff2a1 100644 --- a/arch/blackfin/kernel/ipipe.c +++ b/arch/blackfin/kernel/ipipe.c @@ -219,10 +219,10 @@ int __ipipe_syscall_root(struct pt_regs *regs) ret = __ipipe_dispatch_event(IPIPE_EVENT_SYSCALL, regs); - local_irq_save_hw(flags); + flags = hard_local_irq_save(); if (!__ipipe_root_domain_p) { - local_irq_restore_hw(flags); + hard_local_irq_restore(flags); return 1; } @@ -230,7 +230,7 @@ int __ipipe_syscall_root(struct pt_regs *regs) if ((p->irqpend_himask & IPIPE_IRQMASK_VIRT) != 0) __ipipe_sync_pipeline(IPIPE_IRQMASK_VIRT); - local_irq_restore_hw(flags); + hard_local_irq_restore(flags); return -ret; } @@ -239,14 +239,14 @@ unsigned long ipipe_critical_enter(void (*syncfn) (void)) { unsigned long flags; - local_irq_save_hw(flags); + flags = hard_local_irq_save(); return flags; } void ipipe_critical_exit(unsigned long flags) { - local_irq_restore_hw(flags); + hard_local_irq_restore(flags); } static void __ipipe_no_irqtail(void) @@ -279,9 +279,9 @@ int ipipe_trigger_irq(unsigned irq) return -EINVAL; #endif - local_irq_save_hw(flags); + flags = hard_local_irq_save(); __ipipe_handle_irq(irq, NULL); - local_irq_restore_hw(flags); + hard_local_irq_restore(flags); return 1; } @@ -293,7 +293,7 @@ asmlinkage void __ipipe_sync_root(void) BUG_ON(irqs_disabled()); - local_irq_save_hw(flags); + flags = hard_local_irq_save(); if (irq_tail_hook) irq_tail_hook(); @@ -303,7 +303,7 @@ asmlinkage void __ipipe_sync_root(void) if (ipipe_root_cpudom_var(irqpend_himask) != 0) __ipipe_sync_pipeline(IPIPE_IRQMASK_ANY); - local_irq_restore_hw(flags); + hard_local_irq_restore(flags); } void ___ipipe_sync_pipeline(unsigned long syncmask) @@ -344,10 +344,10 @@ void __ipipe_stall_root(void) { unsigned long *p, flags; - local_irq_save_hw(flags); + flags = hard_local_irq_save(); p = &__ipipe_root_status; __set_bit(IPIPE_STALL_FLAG, p); - local_irq_restore_hw(flags); + hard_local_irq_restore(flags); } EXPORT_SYMBOL(__ipipe_stall_root); @@ -356,10 +356,10 @@ unsigned long __ipipe_test_and_stall_root(void) unsigned long *p, flags; int x; - local_irq_save_hw(flags); + flags = hard_local_irq_save(); p = &__ipipe_root_status; x = __test_and_set_bit(IPIPE_STALL_FLAG, p); - local_irq_restore_hw(flags); + hard_local_irq_restore(flags); return x; } @@ -371,10 +371,10 @@ unsigned long __ipipe_test_root(void) unsigned long flags; int x; - local_irq_save_hw_smp(flags); + flags = hard_local_irq_save_smp(); p = &__ipipe_root_status; x = test_bit(IPIPE_STALL_FLAG, p); - local_irq_restore_hw_smp(flags); + hard_local_irq_restore_smp(flags); return x; } @@ -384,10 +384,10 @@ void __ipipe_lock_root(void) { unsigned long *p, flags; - local_irq_save_hw(flags); + flags = hard_local_irq_save(); p = &__ipipe_root_status; __set_bit(IPIPE_SYNCDEFER_FLAG, p); - local_irq_restore_hw(flags); + hard_local_irq_restore(flags); } EXPORT_SYMBOL(__ipipe_lock_root); @@ -395,9 +395,9 @@ void __ipipe_unlock_root(void) { unsigned long *p, flags; - local_irq_save_hw(flags); + flags = hard_local_irq_save(); p = &__ipipe_root_status; __clear_bit(IPIPE_SYNCDEFER_FLAG, p); - local_irq_restore_hw(flags); + hard_local_irq_restore(flags); } EXPORT_SYMBOL(__ipipe_unlock_root); diff --git a/arch/blackfin/kernel/process.c b/arch/blackfin/kernel/process.c index 01f98cb964d2..c86a3ed5f48f 100644 --- a/arch/blackfin/kernel/process.c +++ b/arch/blackfin/kernel/process.c @@ -65,11 +65,11 @@ static void default_idle(void) #ifdef CONFIG_IPIPE ipipe_suspend_domain(); #endif - local_irq_disable_hw(); + hard_local_irq_disable(); if (!need_resched()) idle_with_irq_disabled(); - local_irq_enable_hw(); + hard_local_irq_enable(); } /* diff --git a/arch/blackfin/kernel/trace.c b/arch/blackfin/kernel/trace.c index 59fcdf6b0138..05b550891ce5 100644 --- a/arch/blackfin/kernel/trace.c +++ b/arch/blackfin/kernel/trace.c @@ -15,6 +15,7 @@ #include <linux/kallsyms.h> #include <linux/err.h> #include <linux/fs.h> +#include <linux/irq.h> #include <asm/dma.h> #include <asm/trace.h> #include <asm/fixed_code.h> diff --git a/arch/blackfin/mach-bf518/include/mach/cdefBF51x_base.h b/arch/blackfin/mach-bf518/include/mach/cdefBF51x_base.h index e548e9d1d6fa..29498e59e71f 100644 --- a/arch/blackfin/mach-bf518/include/mach/cdefBF51x_base.h +++ b/arch/blackfin/mach-bf518/include/mach/cdefBF51x_base.h @@ -1058,54 +1058,4 @@ /* These need to be last due to the cdef/linux inter-dependencies */ #include <asm/irq.h> -/* Writing to PLL_CTL initiates a PLL relock sequence. */ -static __inline__ void bfin_write_PLL_CTL(unsigned int val) -{ - unsigned long flags, iwr0, iwr1; - - if (val == bfin_read_PLL_CTL()) - return; - - local_irq_save_hw(flags); - /* Enable the PLL Wakeup bit in SIC IWR */ - iwr0 = bfin_read32(SIC_IWR0); - iwr1 = bfin_read32(SIC_IWR1); - /* Only allow PPL Wakeup) */ - bfin_write32(SIC_IWR0, IWR_ENABLE(0)); - bfin_write32(SIC_IWR1, 0); - - bfin_write16(PLL_CTL, val); - SSYNC(); - asm("IDLE;"); - - bfin_write32(SIC_IWR0, iwr0); - bfin_write32(SIC_IWR1, iwr1); - local_irq_restore_hw(flags); -} - -/* Writing to VR_CTL initiates a PLL relock sequence. */ -static __inline__ void bfin_write_VR_CTL(unsigned int val) -{ - unsigned long flags, iwr0, iwr1; - - if (val == bfin_read_VR_CTL()) - return; - - local_irq_save_hw(flags); - /* Enable the PLL Wakeup bit in SIC IWR */ - iwr0 = bfin_read32(SIC_IWR0); - iwr1 = bfin_read32(SIC_IWR1); - /* Only allow PPL Wakeup) */ - bfin_write32(SIC_IWR0, IWR_ENABLE(0)); - bfin_write32(SIC_IWR1, 0); - - bfin_write16(VR_CTL, val); - SSYNC(); - asm("IDLE;"); - - bfin_write32(SIC_IWR0, iwr0); - bfin_write32(SIC_IWR1, iwr1); - local_irq_restore_hw(flags); -} - #endif /* _CDEF_BF52X_H */ diff --git a/arch/blackfin/mach-bf518/include/mach/pll.h b/arch/blackfin/mach-bf518/include/mach/pll.h new file mode 100644 index 000000000000..d5502988896b --- /dev/null +++ b/arch/blackfin/mach-bf518/include/mach/pll.h @@ -0,0 +1,63 @@ +/* + * Copyright 2008 Analog Devices Inc. + * + * Licensed under the GPL-2 or later + */ + +#ifndef _MACH_PLL_H +#define _MACH_PLL_H + +#include <asm/blackfin.h> +#include <asm/irqflags.h> + +/* Writing to PLL_CTL initiates a PLL relock sequence. */ +static __inline__ void bfin_write_PLL_CTL(unsigned int val) +{ + unsigned long flags, iwr0, iwr1; + + if (val == bfin_read_PLL_CTL()) + return; + + flags = hard_local_irq_save(); + /* Enable the PLL Wakeup bit in SIC IWR */ + iwr0 = bfin_read32(SIC_IWR0); + iwr1 = bfin_read32(SIC_IWR1); + /* Only allow PPL Wakeup) */ + bfin_write32(SIC_IWR0, IWR_ENABLE(0)); + bfin_write32(SIC_IWR1, 0); + + bfin_write16(PLL_CTL, val); + SSYNC(); + asm("IDLE;"); + + bfin_write32(SIC_IWR0, iwr0); + bfin_write32(SIC_IWR1, iwr1); + hard_local_irq_restore(flags); +} + +/* Writing to VR_CTL initiates a PLL relock sequence. */ +static __inline__ void bfin_write_VR_CTL(unsigned int val) +{ + unsigned long flags, iwr0, iwr1; + + if (val == bfin_read_VR_CTL()) + return; + + flags = hard_local_irq_save(); + /* Enable the PLL Wakeup bit in SIC IWR */ + iwr0 = bfin_read32(SIC_IWR0); + iwr1 = bfin_read32(SIC_IWR1); + /* Only allow PPL Wakeup) */ + bfin_write32(SIC_IWR0, IWR_ENABLE(0)); + bfin_write32(SIC_IWR1, 0); + + bfin_write16(VR_CTL, val); + SSYNC(); + asm("IDLE;"); + + bfin_write32(SIC_IWR0, iwr0); + bfin_write32(SIC_IWR1, iwr1); + hard_local_irq_restore(flags); +} + +#endif /* _MACH_PLL_H */ diff --git a/arch/blackfin/mach-bf527/include/mach/cdefBF52x_base.h b/arch/blackfin/mach-bf527/include/mach/cdefBF52x_base.h index 12f2ad45314e..11fb27bc427d 100644 --- a/arch/blackfin/mach-bf527/include/mach/cdefBF52x_base.h +++ b/arch/blackfin/mach-bf527/include/mach/cdefBF52x_base.h @@ -1110,54 +1110,4 @@ /* These need to be last due to the cdef/linux inter-dependencies */ #include <asm/irq.h> -/* Writing to PLL_CTL initiates a PLL relock sequence. */ -static __inline__ void bfin_write_PLL_CTL(unsigned int val) -{ - unsigned long flags, iwr0, iwr1; - - if (val == bfin_read_PLL_CTL()) - return; - - local_irq_save_hw(flags); - /* Enable the PLL Wakeup bit in SIC IWR */ - iwr0 = bfin_read32(SIC_IWR0); - iwr1 = bfin_read32(SIC_IWR1); - /* Only allow PPL Wakeup) */ - bfin_write32(SIC_IWR0, IWR_ENABLE(0)); - bfin_write32(SIC_IWR1, 0); - - bfin_write16(PLL_CTL, val); - SSYNC(); - asm("IDLE;"); - - bfin_write32(SIC_IWR0, iwr0); - bfin_write32(SIC_IWR1, iwr1); - local_irq_restore_hw(flags); -} - -/* Writing to VR_CTL initiates a PLL relock sequence. */ -static __inline__ void bfin_write_VR_CTL(unsigned int val) -{ - unsigned long flags, iwr0, iwr1; - - if (val == bfin_read_VR_CTL()) - return; - - local_irq_save_hw(flags); - /* Enable the PLL Wakeup bit in SIC IWR */ - iwr0 = bfin_read32(SIC_IWR0); - iwr1 = bfin_read32(SIC_IWR1); - /* Only allow PPL Wakeup) */ - bfin_write32(SIC_IWR0, IWR_ENABLE(0)); - bfin_write32(SIC_IWR1, 0); - - bfin_write16(VR_CTL, val); - SSYNC(); - asm("IDLE;"); - - bfin_write32(SIC_IWR0, iwr0); - bfin_write32(SIC_IWR1, iwr1); - local_irq_restore_hw(flags); -} - #endif /* _CDEF_BF52X_H */ diff --git a/arch/blackfin/mach-bf527/include/mach/pll.h b/arch/blackfin/mach-bf527/include/mach/pll.h new file mode 100644 index 000000000000..24f1d7c02325 --- /dev/null +++ b/arch/blackfin/mach-bf527/include/mach/pll.h @@ -0,0 +1,63 @@ +/* + * Copyright 2007-2008 Analog Devices Inc. + * + * Licensed under the GPL-2 or later + */ + +#ifndef _MACH_PLL_H +#define _MACH_PLL_H + +#include <asm/blackfin.h> +#include <asm/irqflags.h> + +/* Writing to PLL_CTL initiates a PLL relock sequence. */ +static __inline__ void bfin_write_PLL_CTL(unsigned int val) +{ + unsigned long flags, iwr0, iwr1; + + if (val == bfin_read_PLL_CTL()) + return; + + flags = hard_local_irq_save(); + /* Enable the PLL Wakeup bit in SIC IWR */ + iwr0 = bfin_read32(SIC_IWR0); + iwr1 = bfin_read32(SIC_IWR1); + /* Only allow PPL Wakeup) */ + bfin_write32(SIC_IWR0, IWR_ENABLE(0)); + bfin_write32(SIC_IWR1, 0); + + bfin_write16(PLL_CTL, val); + SSYNC(); + asm("IDLE;"); + + bfin_write32(SIC_IWR0, iwr0); + bfin_write32(SIC_IWR1, iwr1); + hard_local_irq_restore(flags); +} + +/* Writing to VR_CTL initiates a PLL relock sequence. */ +static __inline__ void bfin_write_VR_CTL(unsigned int val) +{ + unsigned long flags, iwr0, iwr1; + + if (val == bfin_read_VR_CTL()) + return; + + flags = hard_local_irq_save(); + /* Enable the PLL Wakeup bit in SIC IWR */ + iwr0 = bfin_read32(SIC_IWR0); + iwr1 = bfin_read32(SIC_IWR1); + /* Only allow PPL Wakeup) */ + bfin_write32(SIC_IWR0, IWR_ENABLE(0)); + bfin_write32(SIC_IWR1, 0); + + bfin_write16(VR_CTL, val); + SSYNC(); + asm("IDLE;"); + + bfin_write32(SIC_IWR0, iwr0); + bfin_write32(SIC_IWR1, iwr1); + hard_local_irq_restore(flags); +} + +#endif /* _MACH_PLL_H */ diff --git a/arch/blackfin/mach-bf533/boards/blackstamp.c b/arch/blackfin/mach-bf533/boards/blackstamp.c index 842b4fa76ea9..84a06f677dff 100644 --- a/arch/blackfin/mach-bf533/boards/blackstamp.c +++ b/arch/blackfin/mach-bf533/boards/blackstamp.c @@ -25,6 +25,7 @@ #include <asm/bfin5xx_spi.h> #include <asm/portmux.h> #include <asm/dpmc.h> +#include <mach/fio_flag.h> /* * Name the Board for the /proc/cpuinfo diff --git a/arch/blackfin/mach-bf533/boards/ip0x.c b/arch/blackfin/mach-bf533/boards/ip0x.c index 7349970db978..b8474cac6b03 100644 --- a/arch/blackfin/mach-bf533/boards/ip0x.c +++ b/arch/blackfin/mach-bf533/boards/ip0x.c @@ -22,6 +22,7 @@ #include <asm/dma.h> #include <asm/bfin5xx_spi.h> #include <asm/portmux.h> +#include <mach/fio_flag.h> /* * Name the Board for the /proc/cpuinfo diff --git a/arch/blackfin/mach-bf533/boards/stamp.c b/arch/blackfin/mach-bf533/boards/stamp.c index c457eaa60239..29c219eff2ff 100644 --- a/arch/blackfin/mach-bf533/boards/stamp.c +++ b/arch/blackfin/mach-bf533/boards/stamp.c @@ -24,6 +24,7 @@ #include <asm/reboot.h> #include <asm/portmux.h> #include <asm/dpmc.h> +#include <mach/fio_flag.h> /* * Name the Board for the /proc/cpuinfo diff --git a/arch/blackfin/mach-bf533/include/mach/cdefBF532.h b/arch/blackfin/mach-bf533/include/mach/cdefBF532.h index feb2392c43ea..401e524f5321 100644 --- a/arch/blackfin/mach-bf533/include/mach/cdefBF532.h +++ b/arch/blackfin/mach-bf533/include/mach/cdefBF532.h @@ -7,11 +7,6 @@ #ifndef _CDEF_BF532_H #define _CDEF_BF532_H -#include <asm/blackfin.h> - -/*include all Core registers and bit definitions*/ -#include "defBF532.h" - /*include core specific register pointer definitions*/ #include <asm/cdef_LPBlackfin.h> @@ -655,90 +650,4 @@ /* These need to be last due to the cdef/linux inter-dependencies */ #include <asm/irq.h> -#if ANOMALY_05000311 -#define BFIN_WRITE_FIO_FLAG(name) \ -static inline void bfin_write_FIO_FLAG_##name(unsigned short val) \ -{ \ - unsigned long flags; \ - local_irq_save_hw(flags); \ - bfin_write16(FIO_FLAG_##name, val); \ - bfin_read_CHIPID(); \ - local_irq_restore_hw(flags); \ -} -BFIN_WRITE_FIO_FLAG(D) -BFIN_WRITE_FIO_FLAG(C) -BFIN_WRITE_FIO_FLAG(S) -BFIN_WRITE_FIO_FLAG(T) - -#define BFIN_READ_FIO_FLAG(name) \ -static inline u16 bfin_read_FIO_FLAG_##name(void) \ -{ \ - unsigned long flags; \ - u16 ret; \ - local_irq_save_hw(flags); \ - ret = bfin_read16(FIO_FLAG_##name); \ - bfin_read_CHIPID(); \ - local_irq_restore_hw(flags); \ - return ret; \ -} -BFIN_READ_FIO_FLAG(D) -BFIN_READ_FIO_FLAG(C) -BFIN_READ_FIO_FLAG(S) -BFIN_READ_FIO_FLAG(T) - -#else -#define bfin_write_FIO_FLAG_D(val) bfin_write16(FIO_FLAG_D, val) -#define bfin_write_FIO_FLAG_C(val) bfin_write16(FIO_FLAG_C, val) -#define bfin_write_FIO_FLAG_S(val) bfin_write16(FIO_FLAG_S, val) -#define bfin_write_FIO_FLAG_T(val) bfin_write16(FIO_FLAG_T, val) -#define bfin_read_FIO_FLAG_T() bfin_read16(FIO_FLAG_T) -#define bfin_read_FIO_FLAG_C() bfin_read16(FIO_FLAG_C) -#define bfin_read_FIO_FLAG_S() bfin_read16(FIO_FLAG_S) -#define bfin_read_FIO_FLAG_D() bfin_read16(FIO_FLAG_D) -#endif - -/* Writing to PLL_CTL initiates a PLL relock sequence. */ -static __inline__ void bfin_write_PLL_CTL(unsigned int val) -{ - unsigned long flags, iwr; - - if (val == bfin_read_PLL_CTL()) - return; - - local_irq_save_hw(flags); - /* Enable the PLL Wakeup bit in SIC IWR */ - iwr = bfin_read32(SIC_IWR); - /* Only allow PPL Wakeup) */ - bfin_write32(SIC_IWR, IWR_ENABLE(0)); - - bfin_write16(PLL_CTL, val); - SSYNC(); - asm("IDLE;"); - - bfin_write32(SIC_IWR, iwr); - local_irq_restore_hw(flags); -} - -/* Writing to VR_CTL initiates a PLL relock sequence. */ -static __inline__ void bfin_write_VR_CTL(unsigned int val) -{ - unsigned long flags, iwr; - - if (val == bfin_read_VR_CTL()) - return; - - local_irq_save_hw(flags); - /* Enable the PLL Wakeup bit in SIC IWR */ - iwr = bfin_read32(SIC_IWR); - /* Only allow PPL Wakeup) */ - bfin_write32(SIC_IWR, IWR_ENABLE(0)); - - bfin_write16(VR_CTL, val); - SSYNC(); - asm("IDLE;"); - - bfin_write32(SIC_IWR, iwr); - local_irq_restore_hw(flags); -} - #endif /* _CDEF_BF532_H */ diff --git a/arch/blackfin/mach-bf533/include/mach/fio_flag.h b/arch/blackfin/mach-bf533/include/mach/fio_flag.h new file mode 100644 index 000000000000..d0bfba0b083b --- /dev/null +++ b/arch/blackfin/mach-bf533/include/mach/fio_flag.h @@ -0,0 +1,55 @@ +/* + * Copyright 2005-2008 Analog Devices Inc. + * + * Licensed under the GPL-2 or later + */ + +#ifndef _MACH_FIO_FLAG_H +#define _MACH_FIO_FLAG_H + +#include <asm/blackfin.h> +#include <asm/irqflags.h> + +#if ANOMALY_05000311 +#define BFIN_WRITE_FIO_FLAG(name) \ +static inline void bfin_write_FIO_FLAG_##name(unsigned short val) \ +{ \ + unsigned long flags; \ + flags = hard_local_irq_save(); \ + bfin_write16(FIO_FLAG_##name, val); \ + bfin_read_CHIPID(); \ + hard_local_irq_restore(flags); \ +} +BFIN_WRITE_FIO_FLAG(D) +BFIN_WRITE_FIO_FLAG(C) +BFIN_WRITE_FIO_FLAG(S) +BFIN_WRITE_FIO_FLAG(T) + +#define BFIN_READ_FIO_FLAG(name) \ +static inline u16 bfin_read_FIO_FLAG_##name(void) \ +{ \ + unsigned long flags; \ + u16 ret; \ + flags = hard_local_irq_save(); \ + ret = bfin_read16(FIO_FLAG_##name); \ + bfin_read_CHIPID(); \ + hard_local_irq_restore(flags); \ + return ret; \ +} +BFIN_READ_FIO_FLAG(D) +BFIN_READ_FIO_FLAG(C) +BFIN_READ_FIO_FLAG(S) +BFIN_READ_FIO_FLAG(T) + +#else +#define bfin_write_FIO_FLAG_D(val) bfin_write16(FIO_FLAG_D, val) +#define bfin_write_FIO_FLAG_C(val) bfin_write16(FIO_FLAG_C, val) +#define bfin_write_FIO_FLAG_S(val) bfin_write16(FIO_FLAG_S, val) +#define bfin_write_FIO_FLAG_T(val) bfin_write16(FIO_FLAG_T, val) +#define bfin_read_FIO_FLAG_T() bfin_read16(FIO_FLAG_T) +#define bfin_read_FIO_FLAG_C() bfin_read16(FIO_FLAG_C) +#define bfin_read_FIO_FLAG_S() bfin_read16(FIO_FLAG_S) +#define bfin_read_FIO_FLAG_D() bfin_read16(FIO_FLAG_D) +#endif + +#endif /* _MACH_FIO_FLAG_H */ diff --git a/arch/blackfin/mach-bf533/include/mach/pll.h b/arch/blackfin/mach-bf533/include/mach/pll.h new file mode 100644 index 000000000000..169c106d0edb --- /dev/null +++ b/arch/blackfin/mach-bf533/include/mach/pll.h @@ -0,0 +1,57 @@ +/* + * Copyright 2005-2008 Analog Devices Inc. + * + * Licensed under the GPL-2 or later + */ + +#ifndef _MACH_PLL_H +#define _MACH_PLL_H + +#include <asm/blackfin.h> +#include <asm/irqflags.h> + +/* Writing to PLL_CTL initiates a PLL relock sequence. */ +static __inline__ void bfin_write_PLL_CTL(unsigned int val) +{ + unsigned long flags, iwr; + + if (val == bfin_read_PLL_CTL()) + return; + + flags = hard_local_irq_save(); + /* Enable the PLL Wakeup bit in SIC IWR */ + iwr = bfin_read32(SIC_IWR); + /* Only allow PPL Wakeup) */ + bfin_write32(SIC_IWR, IWR_ENABLE(0)); + + bfin_write16(PLL_CTL, val); + SSYNC(); + asm("IDLE;"); + + bfin_write32(SIC_IWR, iwr); + hard_local_irq_restore(flags); +} + +/* Writing to VR_CTL initiates a PLL relock sequence. */ +static __inline__ void bfin_write_VR_CTL(unsigned int val) +{ + unsigned long flags, iwr; + + if (val == bfin_read_VR_CTL()) + return; + + flags = hard_local_irq_save(); + /* Enable the PLL Wakeup bit in SIC IWR */ + iwr = bfin_read32(SIC_IWR); + /* Only allow PPL Wakeup) */ + bfin_write32(SIC_IWR, IWR_ENABLE(0)); + + bfin_write16(VR_CTL, val); + SSYNC(); + asm("IDLE;"); + + bfin_write32(SIC_IWR, iwr); + hard_local_irq_restore(flags); +} + +#endif /* _MACH_PLL_H */ diff --git a/arch/blackfin/mach-bf537/include/mach/cdefBF534.h b/arch/blackfin/mach-bf537/include/mach/cdefBF534.h index 91825c9bd226..fbeb35e14135 100644 --- a/arch/blackfin/mach-bf537/include/mach/cdefBF534.h +++ b/arch/blackfin/mach-bf537/include/mach/cdefBF534.h @@ -1750,48 +1750,4 @@ /* These need to be last due to the cdef/linux inter-dependencies */ #include <asm/irq.h> -/* Writing to PLL_CTL initiates a PLL relock sequence. */ -static __inline__ void bfin_write_PLL_CTL(unsigned int val) -{ - unsigned long flags, iwr; - - if (val == bfin_read_PLL_CTL()) - return; - - local_irq_save_hw(flags); - /* Enable the PLL Wakeup bit in SIC IWR */ - iwr = bfin_read32(SIC_IWR); - /* Only allow PPL Wakeup) */ - bfin_write32(SIC_IWR, IWR_ENABLE(0)); - - bfin_write16(PLL_CTL, val); - SSYNC(); - asm("IDLE;"); - - bfin_write32(SIC_IWR, iwr); - local_irq_restore_hw(flags); -} - -/* Writing to VR_CTL initiates a PLL relock sequence. */ -static __inline__ void bfin_write_VR_CTL(unsigned int val) -{ - unsigned long flags, iwr; - - if (val == bfin_read_VR_CTL()) - return; - - local_irq_save_hw(flags); - /* Enable the PLL Wakeup bit in SIC IWR */ - iwr = bfin_read32(SIC_IWR); - /* Only allow PPL Wakeup) */ - bfin_write32(SIC_IWR, IWR_ENABLE(0)); - - bfin_write16(VR_CTL, val); - SSYNC(); - asm("IDLE;"); - - bfin_write32(SIC_IWR, iwr); - local_irq_restore_hw(flags); -} - #endif /* _CDEF_BF534_H */ diff --git a/arch/blackfin/mach-bf537/include/mach/pll.h b/arch/blackfin/mach-bf537/include/mach/pll.h new file mode 100644 index 000000000000..169c106d0edb --- /dev/null +++ b/arch/blackfin/mach-bf537/include/mach/pll.h @@ -0,0 +1,57 @@ +/* + * Copyright 2005-2008 Analog Devices Inc. + * + * Licensed under the GPL-2 or later + */ + +#ifndef _MACH_PLL_H +#define _MACH_PLL_H + +#include <asm/blackfin.h> +#include <asm/irqflags.h> + +/* Writing to PLL_CTL initiates a PLL relock sequence. */ +static __inline__ void bfin_write_PLL_CTL(unsigned int val) +{ + unsigned long flags, iwr; + + if (val == bfin_read_PLL_CTL()) + return; + + flags = hard_local_irq_save(); + /* Enable the PLL Wakeup bit in SIC IWR */ + iwr = bfin_read32(SIC_IWR); + /* Only allow PPL Wakeup) */ + bfin_write32(SIC_IWR, IWR_ENABLE(0)); + + bfin_write16(PLL_CTL, val); + SSYNC(); + asm("IDLE;"); + + bfin_write32(SIC_IWR, iwr); + hard_local_irq_restore(flags); +} + +/* Writing to VR_CTL initiates a PLL relock sequence. */ +static __inline__ void bfin_write_VR_CTL(unsigned int val) +{ + unsigned long flags, iwr; + + if (val == bfin_read_VR_CTL()) + return; + + flags = hard_local_irq_save(); + /* Enable the PLL Wakeup bit in SIC IWR */ + iwr = bfin_read32(SIC_IWR); + /* Only allow PPL Wakeup) */ + bfin_write32(SIC_IWR, IWR_ENABLE(0)); + + bfin_write16(VR_CTL, val); + SSYNC(); + asm("IDLE;"); + + bfin_write32(SIC_IWR, iwr); + hard_local_irq_restore(flags); +} + +#endif /* _MACH_PLL_H */ diff --git a/arch/blackfin/mach-bf538/include/mach/cdefBF538.h b/arch/blackfin/mach-bf538/include/mach/cdefBF538.h index 66aa722cf6c8..085b06b8c0a5 100644 --- a/arch/blackfin/mach-bf538/include/mach/cdefBF538.h +++ b/arch/blackfin/mach-bf538/include/mach/cdefBF538.h @@ -2027,54 +2027,4 @@ /* These need to be last due to the cdef/linux inter-dependencies */ #include <asm/irq.h> -/* Writing to PLL_CTL initiates a PLL relock sequence. */ -static __inline__ void bfin_write_PLL_CTL(unsigned int val) -{ - unsigned long flags, iwr0, iwr1; - - if (val == bfin_read_PLL_CTL()) - return; - - local_irq_save_hw(flags); - /* Enable the PLL Wakeup bit in SIC IWR */ - iwr0 = bfin_read32(SIC_IWR0); - iwr1 = bfin_read32(SIC_IWR1); - /* Only allow PPL Wakeup) */ - bfin_write32(SIC_IWR0, IWR_ENABLE(0)); - bfin_write32(SIC_IWR1, 0); - - bfin_write16(PLL_CTL, val); - SSYNC(); - asm("IDLE;"); - - bfin_write32(SIC_IWR0, iwr0); - bfin_write32(SIC_IWR1, iwr1); - local_irq_restore_hw(flags); -} - -/* Writing to VR_CTL initiates a PLL relock sequence. */ -static __inline__ void bfin_write_VR_CTL(unsigned int val) -{ - unsigned long flags, iwr0, iwr1; - - if (val == bfin_read_VR_CTL()) - return; - - local_irq_save_hw(flags); - /* Enable the PLL Wakeup bit in SIC IWR */ - iwr0 = bfin_read32(SIC_IWR0); - iwr1 = bfin_read32(SIC_IWR1); - /* Only allow PPL Wakeup) */ - bfin_write32(SIC_IWR0, IWR_ENABLE(0)); - bfin_write32(SIC_IWR1, 0); - - bfin_write16(VR_CTL, val); - SSYNC(); - asm("IDLE;"); - - bfin_write32(SIC_IWR0, iwr0); - bfin_write32(SIC_IWR1, iwr1); - local_irq_restore_hw(flags); -} - #endif diff --git a/arch/blackfin/mach-bf538/include/mach/pll.h b/arch/blackfin/mach-bf538/include/mach/pll.h new file mode 100644 index 000000000000..b30bbcd412a7 --- /dev/null +++ b/arch/blackfin/mach-bf538/include/mach/pll.h @@ -0,0 +1,63 @@ +/* + * Copyright 2008-2009 Analog Devices Inc. + * + * Licensed under the GPL-2 or later. + */ + +#ifndef _MACH_PLL_H +#define _MACH_PLL_H + +#include <asm/blackfin.h> +#include <asm/irqflags.h> + +/* Writing to PLL_CTL initiates a PLL relock sequence. */ +static __inline__ void bfin_write_PLL_CTL(unsigned int val) +{ + unsigned long flags, iwr0, iwr1; + + if (val == bfin_read_PLL_CTL()) + return; + + flags = hard_local_irq_save(); + /* Enable the PLL Wakeup bit in SIC IWR */ + iwr0 = bfin_read32(SIC_IWR0); + iwr1 = bfin_read32(SIC_IWR1); + /* Only allow PPL Wakeup) */ + bfin_write32(SIC_IWR0, IWR_ENABLE(0)); + bfin_write32(SIC_IWR1, 0); + + bfin_write16(PLL_CTL, val); + SSYNC(); + asm("IDLE;"); + + bfin_write32(SIC_IWR0, iwr0); + bfin_write32(SIC_IWR1, iwr1); + hard_local_irq_restore(flags); +} + +/* Writing to VR_CTL initiates a PLL relock sequence. */ +static __inline__ void bfin_write_VR_CTL(unsigned int val) +{ + unsigned long flags, iwr0, iwr1; + + if (val == bfin_read_VR_CTL()) + return; + + flags = hard_local_irq_save(); + /* Enable the PLL Wakeup bit in SIC IWR */ + iwr0 = bfin_read32(SIC_IWR0); + iwr1 = bfin_read32(SIC_IWR1); + /* Only allow PPL Wakeup) */ + bfin_write32(SIC_IWR0, IWR_ENABLE(0)); + bfin_write32(SIC_IWR1, 0); + + bfin_write16(VR_CTL, val); + SSYNC(); + asm("IDLE;"); + + bfin_write32(SIC_IWR0, iwr0); + bfin_write32(SIC_IWR1, iwr1); + hard_local_irq_restore(flags); +} + +#endif /* _MACH_PLL_H */ diff --git a/arch/blackfin/mach-bf548/include/mach/cdefBF54x_base.h b/arch/blackfin/mach-bf548/include/mach/cdefBF54x_base.h index ea3ec4ea9e2b..0c16067df4f3 100644 --- a/arch/blackfin/mach-bf548/include/mach/cdefBF54x_base.h +++ b/arch/blackfin/mach-bf548/include/mach/cdefBF54x_base.h @@ -2648,61 +2648,5 @@ /* These need to be last due to the cdef/linux inter-dependencies */ #include <asm/irq.h> -/* Writing to PLL_CTL initiates a PLL relock sequence. */ -static __inline__ void bfin_write_PLL_CTL(unsigned int val) -{ - unsigned long flags, iwr0, iwr1, iwr2; - - if (val == bfin_read_PLL_CTL()) - return; - - local_irq_save_hw(flags); - /* Enable the PLL Wakeup bit in SIC IWR */ - iwr0 = bfin_read32(SIC_IWR0); - iwr1 = bfin_read32(SIC_IWR1); - iwr2 = bfin_read32(SIC_IWR2); - /* Only allow PPL Wakeup) */ - bfin_write32(SIC_IWR0, IWR_ENABLE(0)); - bfin_write32(SIC_IWR1, 0); - bfin_write32(SIC_IWR2, 0); - - bfin_write16(PLL_CTL, val); - SSYNC(); - asm("IDLE;"); - - bfin_write32(SIC_IWR0, iwr0); - bfin_write32(SIC_IWR1, iwr1); - bfin_write32(SIC_IWR2, iwr2); - local_irq_restore_hw(flags); -} - -/* Writing to VR_CTL initiates a PLL relock sequence. */ -static __inline__ void bfin_write_VR_CTL(unsigned int val) -{ - unsigned long flags, iwr0, iwr1, iwr2; - - if (val == bfin_read_VR_CTL()) - return; - - local_irq_save_hw(flags); - /* Enable the PLL Wakeup bit in SIC IWR */ - iwr0 = bfin_read32(SIC_IWR0); - iwr1 = bfin_read32(SIC_IWR1); - iwr2 = bfin_read32(SIC_IWR2); - /* Only allow PPL Wakeup) */ - bfin_write32(SIC_IWR0, IWR_ENABLE(0)); - bfin_write32(SIC_IWR1, 0); - bfin_write32(SIC_IWR2, 0); - - bfin_write16(VR_CTL, val); - SSYNC(); - asm("IDLE;"); - - bfin_write32(SIC_IWR0, iwr0); - bfin_write32(SIC_IWR1, iwr1); - bfin_write32(SIC_IWR2, iwr2); - local_irq_restore_hw(flags); -} - #endif /* _CDEF_BF54X_H */ diff --git a/arch/blackfin/mach-bf548/include/mach/pll.h b/arch/blackfin/mach-bf548/include/mach/pll.h new file mode 100644 index 000000000000..7865a090d333 --- /dev/null +++ b/arch/blackfin/mach-bf548/include/mach/pll.h @@ -0,0 +1,69 @@ +/* + * Copyright 2007-2008 Analog Devices Inc. + * + * Licensed under the GPL-2 or later. + */ + +#ifndef _MACH_PLL_H +#define _MACH_PLL_H + +#include <asm/blackfin.h> +#include <asm/irqflags.h> + +/* Writing to PLL_CTL initiates a PLL relock sequence. */ +static __inline__ void bfin_write_PLL_CTL(unsigned int val) +{ + unsigned long flags, iwr0, iwr1, iwr2; + + if (val == bfin_read_PLL_CTL()) + return; + + flags = hard_local_irq_save(); + /* Enable the PLL Wakeup bit in SIC IWR */ + iwr0 = bfin_read32(SIC_IWR0); + iwr1 = bfin_read32(SIC_IWR1); + iwr2 = bfin_read32(SIC_IWR2); + /* Only allow PPL Wakeup) */ + bfin_write32(SIC_IWR0, IWR_ENABLE(0)); + bfin_write32(SIC_IWR1, 0); + bfin_write32(SIC_IWR2, 0); + + bfin_write16(PLL_CTL, val); + SSYNC(); + asm("IDLE;"); + + bfin_write32(SIC_IWR0, iwr0); + bfin_write32(SIC_IWR1, iwr1); + bfin_write32(SIC_IWR2, iwr2); + hard_local_irq_restore(flags); +} + +/* Writing to VR_CTL initiates a PLL relock sequence. */ +static __inline__ void bfin_write_VR_CTL(unsigned int val) +{ + unsigned long flags, iwr0, iwr1, iwr2; + + if (val == bfin_read_VR_CTL()) + return; + + flags = hard_local_irq_save(); + /* Enable the PLL Wakeup bit in SIC IWR */ + iwr0 = bfin_read32(SIC_IWR0); + iwr1 = bfin_read32(SIC_IWR1); + iwr2 = bfin_read32(SIC_IWR2); + /* Only allow PPL Wakeup) */ + bfin_write32(SIC_IWR0, IWR_ENABLE(0)); + bfin_write32(SIC_IWR1, 0); + bfin_write32(SIC_IWR2, 0); + + bfin_write16(VR_CTL, val); + SSYNC(); + asm("IDLE;"); + + bfin_write32(SIC_IWR0, iwr0); + bfin_write32(SIC_IWR1, iwr1); + bfin_write32(SIC_IWR2, iwr2); + hard_local_irq_restore(flags); +} + +#endif /* _MACH_PLL_H */ diff --git a/arch/blackfin/mach-bf561/include/mach/cdefBF561.h b/arch/blackfin/mach-bf561/include/mach/cdefBF561.h index 81ecdb71c6af..cc0416a5fa02 100644 --- a/arch/blackfin/mach-bf561/include/mach/cdefBF561.h +++ b/arch/blackfin/mach-bf561/include/mach/cdefBF561.h @@ -1534,54 +1534,4 @@ /* These need to be last due to the cdef/linux inter-dependencies */ #include <asm/irq.h> -/* Writing to PLL_CTL initiates a PLL relock sequence. */ -static __inline__ void bfin_write_PLL_CTL(unsigned int val) -{ - unsigned long flags, iwr0, iwr1; - - if (val == bfin_read_PLL_CTL()) - return; - - local_irq_save_hw(flags); - /* Enable the PLL Wakeup bit in SIC IWR */ - iwr0 = bfin_read32(SICA_IWR0); - iwr1 = bfin_read32(SICA_IWR1); - /* Only allow PPL Wakeup) */ - bfin_write32(SICA_IWR0, IWR_ENABLE(0)); - bfin_write32(SICA_IWR1, 0); - - bfin_write16(PLL_CTL, val); - SSYNC(); - asm("IDLE;"); - - bfin_write32(SICA_IWR0, iwr0); - bfin_write32(SICA_IWR1, iwr1); - local_irq_restore_hw(flags); -} - -/* Writing to VR_CTL initiates a PLL relock sequence. */ -static __inline__ void bfin_write_VR_CTL(unsigned int val) -{ - unsigned long flags, iwr0, iwr1; - - if (val == bfin_read_VR_CTL()) - return; - - local_irq_save_hw(flags); - /* Enable the PLL Wakeup bit in SIC IWR */ - iwr0 = bfin_read32(SICA_IWR0); - iwr1 = bfin_read32(SICA_IWR1); - /* Only allow PPL Wakeup) */ - bfin_write32(SICA_IWR0, IWR_ENABLE(0)); - bfin_write32(SICA_IWR1, 0); - - bfin_write16(VR_CTL, val); - SSYNC(); - asm("IDLE;"); - - bfin_write32(SICA_IWR0, iwr0); - bfin_write32(SICA_IWR1, iwr1); - local_irq_restore_hw(flags); -} - #endif /* _CDEF_BF561_H */ diff --git a/arch/blackfin/mach-bf561/include/mach/pll.h b/arch/blackfin/mach-bf561/include/mach/pll.h new file mode 100644 index 000000000000..f2b1fbdb8e72 --- /dev/null +++ b/arch/blackfin/mach-bf561/include/mach/pll.h @@ -0,0 +1,63 @@ +/* + * Copyright 2005-2009 Analog Devices Inc. + * + * Licensed under the GPL-2 or later. + */ + +#ifndef _MACH_PLL_H +#define _MACH_PLL_H + +#include <asm/blackfin.h> +#include <asm/irqflags.h> + +/* Writing to PLL_CTL initiates a PLL relock sequence. */ +static __inline__ void bfin_write_PLL_CTL(unsigned int val) +{ + unsigned long flags, iwr0, iwr1; + + if (val == bfin_read_PLL_CTL()) + return; + + flags = hard_local_irq_save(); + /* Enable the PLL Wakeup bit in SIC IWR */ + iwr0 = bfin_read32(SICA_IWR0); + iwr1 = bfin_read32(SICA_IWR1); + /* Only allow PPL Wakeup) */ + bfin_write32(SICA_IWR0, IWR_ENABLE(0)); + bfin_write32(SICA_IWR1, 0); + + bfin_write16(PLL_CTL, val); + SSYNC(); + asm("IDLE;"); + + bfin_write32(SICA_IWR0, iwr0); + bfin_write32(SICA_IWR1, iwr1); + hard_local_irq_restore(flags); +} + +/* Writing to VR_CTL initiates a PLL relock sequence. */ +static __inline__ void bfin_write_VR_CTL(unsigned int val) +{ + unsigned long flags, iwr0, iwr1; + + if (val == bfin_read_VR_CTL()) + return; + + flags = hard_local_irq_save(); + /* Enable the PLL Wakeup bit in SIC IWR */ + iwr0 = bfin_read32(SICA_IWR0); + iwr1 = bfin_read32(SICA_IWR1); + /* Only allow PPL Wakeup) */ + bfin_write32(SICA_IWR0, IWR_ENABLE(0)); + bfin_write32(SICA_IWR1, 0); + + bfin_write16(VR_CTL, val); + SSYNC(); + asm("IDLE;"); + + bfin_write32(SICA_IWR0, iwr0); + bfin_write32(SICA_IWR1, iwr1); + hard_local_irq_restore(flags); +} + +#endif /* _MACH_PLL_H */ diff --git a/arch/blackfin/mach-common/cpufreq.c b/arch/blackfin/mach-common/cpufreq.c index 4391d03dc845..f4cf11d362e1 100644 --- a/arch/blackfin/mach-common/cpufreq.c +++ b/arch/blackfin/mach-common/cpufreq.c @@ -134,7 +134,7 @@ static int bfin_target(struct cpufreq_policy *poli, cpufreq_notify_transition(&freqs, CPUFREQ_PRECHANGE); if (cpu == CPUFREQ_CPU) { - local_irq_save_hw(flags); + flags = hard_local_irq_save(); plldiv = (bfin_read_PLL_DIV() & SSEL) | dpm_state_table[index].csel; bfin_write_PLL_DIV(plldiv); @@ -155,7 +155,7 @@ static int bfin_target(struct cpufreq_policy *poli, loops_per_jiffy = cpufreq_scale(lpj_ref, lpj_ref_freq, freqs.new); } - local_irq_restore_hw(flags); + hard_local_irq_restore(flags); } /* TODO: just test case for cycles clock source, remove later */ cpufreq_notify_transition(&freqs, CPUFREQ_POSTCHANGE); diff --git a/arch/blackfin/mach-common/ints-priority.c b/arch/blackfin/mach-common/ints-priority.c index 1c8c4c7245c3..eaece5f84e42 100644 --- a/arch/blackfin/mach-common/ints-priority.c +++ b/arch/blackfin/mach-common/ints-priority.c @@ -132,8 +132,8 @@ static void bfin_ack_noop(unsigned int irq) static void bfin_core_mask_irq(unsigned int irq) { bfin_irq_flags &= ~(1 << irq); - if (!irqs_disabled_hw()) - local_irq_enable_hw(); + if (!hard_irqs_disabled()) + hard_local_irq_enable(); } static void bfin_core_unmask_irq(unsigned int irq) @@ -148,8 +148,8 @@ static void bfin_core_unmask_irq(unsigned int irq) * local_irq_enable just does "STI bfin_irq_flags", so it's exactly * what we need. */ - if (!irqs_disabled_hw()) - local_irq_enable_hw(); + if (!hard_irqs_disabled()) + hard_local_irq_enable(); return; } @@ -158,12 +158,12 @@ static void bfin_internal_mask_irq(unsigned int irq) unsigned long flags; #ifdef CONFIG_BF53x - local_irq_save_hw(flags); + flags = hard_local_irq_save(); bfin_write_SIC_IMASK(bfin_read_SIC_IMASK() & ~(1 << SIC_SYSIRQ(irq))); #else unsigned mask_bank, mask_bit; - local_irq_save_hw(flags); + flags = hard_local_irq_save(); mask_bank = SIC_SYSIRQ(irq) / 32; mask_bit = SIC_SYSIRQ(irq) % 32; bfin_write_SIC_IMASK(mask_bank, bfin_read_SIC_IMASK(mask_bank) & @@ -173,7 +173,7 @@ static void bfin_internal_mask_irq(unsigned int irq) ~(1 << mask_bit)); #endif #endif - local_irq_restore_hw(flags); + hard_local_irq_restore(flags); } #ifdef CONFIG_SMP @@ -186,12 +186,12 @@ static void bfin_internal_unmask_irq(unsigned int irq) unsigned long flags; #ifdef CONFIG_BF53x - local_irq_save_hw(flags); + flags = hard_local_irq_save(); bfin_write_SIC_IMASK(bfin_read_SIC_IMASK() | (1 << SIC_SYSIRQ(irq))); #else unsigned mask_bank, mask_bit; - local_irq_save_hw(flags); + flags = hard_local_irq_save(); mask_bank = SIC_SYSIRQ(irq) / 32; mask_bit = SIC_SYSIRQ(irq) % 32; #ifdef CONFIG_SMP @@ -207,7 +207,7 @@ static void bfin_internal_unmask_irq(unsigned int irq) (1 << mask_bit)); #endif #endif - local_irq_restore_hw(flags); + hard_local_irq_restore(flags); } #ifdef CONFIG_SMP @@ -264,7 +264,7 @@ int bfin_internal_set_wake(unsigned int irq, unsigned int state) break; } - local_irq_save_hw(flags); + flags = hard_local_irq_save(); if (state) { bfin_sic_iwr[bank] |= (1 << bit); @@ -275,7 +275,7 @@ int bfin_internal_set_wake(unsigned int irq, unsigned int state) vr_wakeup &= ~wakeup; } - local_irq_restore_hw(flags); + hard_local_irq_restore(flags); return 0; } diff --git a/arch/blackfin/mach-common/pm.c b/arch/blackfin/mach-common/pm.c index 09c1fb410748..80884b136a0c 100644 --- a/arch/blackfin/mach-common/pm.c +++ b/arch/blackfin/mach-common/pm.c @@ -25,7 +25,7 @@ void bfin_pm_suspend_standby_enter(void) { unsigned long flags; - local_irq_save_hw(flags); + flags = hard_local_irq_save(); bfin_pm_standby_setup(); #ifdef CONFIG_PM_BFIN_SLEEP_DEEPER @@ -56,7 +56,7 @@ void bfin_pm_suspend_standby_enter(void) bfin_write_SIC_IWR(IWR_DISABLE_ALL); #endif - local_irq_restore_hw(flags); + hard_local_irq_restore(flags); } int bf53x_suspend_l1_mem(unsigned char *memptr) @@ -149,12 +149,12 @@ int bfin_pm_suspend_mem_enter(void) wakeup |= GPWE; #endif - local_irq_save_hw(flags); + flags = hard_local_irq_save(); ret = blackfin_dma_suspend(); if (ret) { - local_irq_restore_hw(flags); + hard_local_irq_restore(flags); kfree(memptr); return ret; } @@ -178,7 +178,7 @@ int bfin_pm_suspend_mem_enter(void) bfin_gpio_pm_hibernate_restore(); blackfin_dma_resume(); - local_irq_restore_hw(flags); + hard_local_irq_restore(flags); kfree(memptr); return 0; diff --git a/arch/cris/include/arch-v10/arch/irqflags.h b/arch/cris/include/arch-v10/arch/irqflags.h new file mode 100644 index 000000000000..75ef18991240 --- /dev/null +++ b/arch/cris/include/arch-v10/arch/irqflags.h @@ -0,0 +1,45 @@ +#ifndef __ASM_CRIS_ARCH_IRQFLAGS_H +#define __ASM_CRIS_ARCH_IRQFLAGS_H + +#include <linux/types.h> + +static inline unsigned long arch_local_save_flags(void) +{ + unsigned long flags; + asm volatile("move $ccr,%0" : "=rm" (flags) : : "memory"); + return flags; +} + +static inline void arch_local_irq_disable(void) +{ + asm volatile("di" : : : "memory"); +} + +static inline void arch_local_irq_enable(void) +{ + asm volatile("ei" : : : "memory"); +} + +static inline unsigned long arch_local_irq_save(void) +{ + unsigned long flags = arch_local_save_flags(); + arch_local_irq_disable(); + return flags; +} + +static inline void arch_local_irq_restore(unsigned long flags) +{ + asm volatile("move %0,$ccr" : : "rm" (flags) : "memory"); +} + +static inline bool arch_irqs_disabled_flags(unsigned long flags) +{ + return !(flags & (1 << 5)); +} + +static inline bool arch_irqs_disabled(void) +{ + return arch_irqs_disabled_flags(arch_local_save_flags()); +} + +#endif /* __ASM_CRIS_ARCH_IRQFLAGS_H */ diff --git a/arch/cris/include/arch-v10/arch/system.h b/arch/cris/include/arch-v10/arch/system.h index 4a9cd36c9e16..935fde34aa15 100644 --- a/arch/cris/include/arch-v10/arch/system.h +++ b/arch/cris/include/arch-v10/arch/system.h @@ -44,20 +44,4 @@ static inline unsigned long _get_base(char * addr) struct __xchg_dummy { unsigned long a[100]; }; #define __xg(x) ((struct __xchg_dummy *)(x)) -/* interrupt control.. */ -#define local_save_flags(x) __asm__ __volatile__ ("move $ccr,%0" : "=rm" (x) : : "memory"); -#define local_irq_restore(x) __asm__ __volatile__ ("move %0,$ccr" : : "rm" (x) : "memory"); -#define local_irq_disable() __asm__ __volatile__ ( "di" : : :"memory"); -#define local_irq_enable() __asm__ __volatile__ ( "ei" : : :"memory"); - -#define irqs_disabled() \ -({ \ - unsigned long flags; \ - local_save_flags(flags); \ - !(flags & (1<<5)); \ -}) - -/* For spinlocks etc */ -#define local_irq_save(x) __asm__ __volatile__ ("move $ccr,%0\n\tdi" : "=rm" (x) : : "memory"); - #endif diff --git a/arch/cris/include/arch-v32/arch/irqflags.h b/arch/cris/include/arch-v32/arch/irqflags.h new file mode 100644 index 000000000000..041851f8ec6f --- /dev/null +++ b/arch/cris/include/arch-v32/arch/irqflags.h @@ -0,0 +1,46 @@ +#ifndef __ASM_CRIS_ARCH_IRQFLAGS_H +#define __ASM_CRIS_ARCH_IRQFLAGS_H + +#include <linux/types.h> +#include <arch/ptrace.h> + +static inline unsigned long arch_local_save_flags(void) +{ + unsigned long flags; + asm volatile("move $ccs,%0" : "=rm" (flags) : : "memory"); + return flags; +} + +static inline void arch_local_irq_disable(void) +{ + asm volatile("di" : : : "memory"); +} + +static inline void arch_local_irq_enable(void) +{ + asm volatile("ei" : : : "memory"); +} + +static inline unsigned long arch_local_irq_save(void) +{ + unsigned long flags = arch_local_save_flags(); + arch_local_irq_disable(); + return flags; +} + +static inline void arch_local_irq_restore(unsigned long flags) +{ + asm volatile("move %0,$ccs" : : "rm" (flags) : "memory"); +} + +static inline bool arch_irqs_disabled_flags(unsigned long flags) +{ + return !(flags & (1 << I_CCS_BITNR)); +} + +static inline bool arch_irqs_disabled(void) +{ + return arch_irqs_disabled_flags(arch_local_save_flags()); +} + +#endif /* __ASM_CRIS_ARCH_IRQFLAGS_H */ diff --git a/arch/cris/include/arch-v32/arch/system.h b/arch/cris/include/arch-v32/arch/system.h index 6ca90f1f110a..76cea99eaa60 100644 --- a/arch/cris/include/arch-v32/arch/system.h +++ b/arch/cris/include/arch-v32/arch/system.h @@ -44,26 +44,4 @@ static inline unsigned long rdsp(void) struct __xchg_dummy { unsigned long a[100]; }; #define __xg(x) ((struct __xchg_dummy *)(x)) -/* Used for interrupt control. */ -#define local_save_flags(x) \ - __asm__ __volatile__ ("move $ccs, %0" : "=rm" (x) : : "memory"); - -#define local_irq_restore(x) \ - __asm__ __volatile__ ("move %0, $ccs" : : "rm" (x) : "memory"); - -#define local_irq_disable() __asm__ __volatile__ ("di" : : : "memory"); -#define local_irq_enable() __asm__ __volatile__ ("ei" : : : "memory"); - -#define irqs_disabled() \ -({ \ - unsigned long flags; \ - \ - local_save_flags(flags);\ - !(flags & (1 << I_CCS_BITNR)); \ -}) - -/* Used for spinlocks, etc. */ -#define local_irq_save(x) \ - __asm__ __volatile__ ("move $ccs, %0\n\tdi" : "=rm" (x) : : "memory"); - #endif /* _ASM_CRIS_ARCH_SYSTEM_H */ diff --git a/arch/cris/include/asm/irqflags.h b/arch/cris/include/asm/irqflags.h new file mode 100644 index 000000000000..943ba5ca6d2c --- /dev/null +++ b/arch/cris/include/asm/irqflags.h @@ -0,0 +1 @@ +#include <arch/irqflags.h> diff --git a/arch/cris/include/asm/system.h b/arch/cris/include/asm/system.h index 8657b084a922..ea10592f7d75 100644 --- a/arch/cris/include/asm/system.h +++ b/arch/cris/include/asm/system.h @@ -1,6 +1,7 @@ #ifndef __ASM_CRIS_SYSTEM_H #define __ASM_CRIS_SYSTEM_H +#include <linux/irqflags.h> #include <arch/system.h> /* the switch_to macro calls resume, an asm function in entry.S which does the actual diff --git a/arch/frv/Kconfig b/arch/frv/Kconfig index 16399bd24993..0f2417df6323 100644 --- a/arch/frv/Kconfig +++ b/arch/frv/Kconfig @@ -7,6 +7,7 @@ config FRV default y select HAVE_IDE select HAVE_ARCH_TRACEHOOK + select HAVE_IRQ_WORK select HAVE_PERF_EVENTS config ZONE_DMA diff --git a/arch/frv/include/asm/irqflags.h b/arch/frv/include/asm/irqflags.h new file mode 100644 index 000000000000..82f0b5363f42 --- /dev/null +++ b/arch/frv/include/asm/irqflags.h @@ -0,0 +1,158 @@ +/* FR-V interrupt handling + * + * Copyright (C) 2010 Red Hat, Inc. All Rights Reserved. + * Written by David Howells (dhowells@redhat.com) + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public Licence + * as published by the Free Software Foundation; either version + * 2 of the Licence, or (at your option) any later version. + */ + +#ifndef _ASM_IRQFLAGS_H +#define _ASM_IRQFLAGS_H + +/* + * interrupt flag manipulation + * - use virtual interrupt management since touching the PSR is slow + * - ICC2.Z: T if interrupts virtually disabled + * - ICC2.C: F if interrupts really disabled + * - if Z==1 upon interrupt: + * - C is set to 0 + * - interrupts are really disabled + * - entry.S returns immediately + * - uses TIHI (TRAP if Z==0 && C==0) #2 to really reenable interrupts + * - if taken, the trap: + * - sets ICC2.C + * - enables interrupts + */ +static inline void arch_local_irq_disable(void) +{ + /* set Z flag, but don't change the C flag */ + asm volatile(" andcc gr0,gr0,gr0,icc2 \n" + : + : + : "memory", "icc2" + ); +} + +static inline void arch_local_irq_enable(void) +{ + /* clear Z flag and then test the C flag */ + asm volatile(" oricc gr0,#1,gr0,icc2 \n" + " tihi icc2,gr0,#2 \n" + : + : + : "memory", "icc2" + ); +} + +static inline unsigned long arch_local_save_flags(void) +{ + unsigned long flags; + + asm volatile("movsg ccr,%0" + : "=r"(flags) + : + : "memory"); + + /* shift ICC2.Z to bit 0 */ + flags >>= 26; + + /* make flags 1 if interrupts disabled, 0 otherwise */ + return flags & 1UL; + +} + +static inline unsigned long arch_local_irq_save(void) +{ + unsigned long flags = arch_local_save_flags(); + arch_local_irq_disable(); + return flags; +} + +static inline void arch_local_irq_restore(unsigned long flags) +{ + /* load the Z flag by turning 1 if disabled into 0 if disabled + * and thus setting the Z flag but not the C flag */ + asm volatile(" xoricc %0,#1,gr0,icc2 \n" + /* then trap if Z=0 and C=0 */ + " tihi icc2,gr0,#2 \n" + : + : "r"(flags) + : "memory", "icc2" + ); + +} + +static inline bool arch_irqs_disabled_flags(unsigned long flags) +{ + return flags; +} + +static inline bool arch_irqs_disabled(void) +{ + return arch_irqs_disabled_flags(arch_local_save_flags()); +} + +/* + * real interrupt flag manipulation + */ +#define __arch_local_irq_disable() \ +do { \ + unsigned long psr; \ + asm volatile(" movsg psr,%0 \n" \ + " andi %0,%2,%0 \n" \ + " ori %0,%1,%0 \n" \ + " movgs %0,psr \n" \ + : "=r"(psr) \ + : "i" (PSR_PIL_14), "i" (~PSR_PIL) \ + : "memory"); \ +} while (0) + +#define __arch_local_irq_enable() \ +do { \ + unsigned long psr; \ + asm volatile(" movsg psr,%0 \n" \ + " andi %0,%1,%0 \n" \ + " movgs %0,psr \n" \ + : "=r"(psr) \ + : "i" (~PSR_PIL) \ + : "memory"); \ +} while (0) + +#define __arch_local_save_flags(flags) \ +do { \ + typecheck(unsigned long, flags); \ + asm("movsg psr,%0" \ + : "=r"(flags) \ + : \ + : "memory"); \ +} while (0) + +#define __arch_local_irq_save(flags) \ +do { \ + unsigned long npsr; \ + typecheck(unsigned long, flags); \ + asm volatile(" movsg psr,%0 \n" \ + " andi %0,%3,%1 \n" \ + " ori %1,%2,%1 \n" \ + " movgs %1,psr \n" \ + : "=r"(flags), "=r"(npsr) \ + : "i" (PSR_PIL_14), "i" (~PSR_PIL) \ + : "memory"); \ +} while (0) + +#define __arch_local_irq_restore(flags) \ +do { \ + typecheck(unsigned long, flags); \ + asm volatile(" movgs %0,psr \n" \ + : \ + : "r" (flags) \ + : "memory"); \ +} while (0) + +#define __arch_irqs_disabled() \ + ((__get_PSR() & PSR_PIL) >= PSR_PIL_14) + +#endif /* _ASM_IRQFLAGS_H */ diff --git a/arch/frv/include/asm/system.h b/arch/frv/include/asm/system.h index efd22d9077ac..0a6d8d9ca45b 100644 --- a/arch/frv/include/asm/system.h +++ b/arch/frv/include/asm/system.h @@ -37,142 +37,6 @@ do { \ } while(0) /* - * interrupt flag manipulation - * - use virtual interrupt management since touching the PSR is slow - * - ICC2.Z: T if interrupts virtually disabled - * - ICC2.C: F if interrupts really disabled - * - if Z==1 upon interrupt: - * - C is set to 0 - * - interrupts are really disabled - * - entry.S returns immediately - * - uses TIHI (TRAP if Z==0 && C==0) #2 to really reenable interrupts - * - if taken, the trap: - * - sets ICC2.C - * - enables interrupts - */ -#define local_irq_disable() \ -do { \ - /* set Z flag, but don't change the C flag */ \ - asm volatile(" andcc gr0,gr0,gr0,icc2 \n" \ - : \ - : \ - : "memory", "icc2" \ - ); \ -} while(0) - -#define local_irq_enable() \ -do { \ - /* clear Z flag and then test the C flag */ \ - asm volatile(" oricc gr0,#1,gr0,icc2 \n" \ - " tihi icc2,gr0,#2 \n" \ - : \ - : \ - : "memory", "icc2" \ - ); \ -} while(0) - -#define local_save_flags(flags) \ -do { \ - typecheck(unsigned long, flags); \ - asm volatile("movsg ccr,%0" \ - : "=r"(flags) \ - : \ - : "memory"); \ - \ - /* shift ICC2.Z to bit 0 */ \ - flags >>= 26; \ - \ - /* make flags 1 if interrupts disabled, 0 otherwise */ \ - flags &= 1UL; \ -} while(0) - -#define irqs_disabled() \ - ({unsigned long flags; local_save_flags(flags); !!flags; }) - -#define local_irq_save(flags) \ -do { \ - typecheck(unsigned long, flags); \ - local_save_flags(flags); \ - local_irq_disable(); \ -} while(0) - -#define local_irq_restore(flags) \ -do { \ - typecheck(unsigned long, flags); \ - \ - /* load the Z flag by turning 1 if disabled into 0 if disabled \ - * and thus setting the Z flag but not the C flag */ \ - asm volatile(" xoricc %0,#1,gr0,icc2 \n" \ - /* then test Z=0 and C=0 */ \ - " tihi icc2,gr0,#2 \n" \ - : \ - : "r"(flags) \ - : "memory", "icc2" \ - ); \ - \ -} while(0) - -/* - * real interrupt flag manipulation - */ -#define __local_irq_disable() \ -do { \ - unsigned long psr; \ - asm volatile(" movsg psr,%0 \n" \ - " andi %0,%2,%0 \n" \ - " ori %0,%1,%0 \n" \ - " movgs %0,psr \n" \ - : "=r"(psr) \ - : "i" (PSR_PIL_14), "i" (~PSR_PIL) \ - : "memory"); \ -} while(0) - -#define __local_irq_enable() \ -do { \ - unsigned long psr; \ - asm volatile(" movsg psr,%0 \n" \ - " andi %0,%1,%0 \n" \ - " movgs %0,psr \n" \ - : "=r"(psr) \ - : "i" (~PSR_PIL) \ - : "memory"); \ -} while(0) - -#define __local_save_flags(flags) \ -do { \ - typecheck(unsigned long, flags); \ - asm("movsg psr,%0" \ - : "=r"(flags) \ - : \ - : "memory"); \ -} while(0) - -#define __local_irq_save(flags) \ -do { \ - unsigned long npsr; \ - typecheck(unsigned long, flags); \ - asm volatile(" movsg psr,%0 \n" \ - " andi %0,%3,%1 \n" \ - " ori %1,%2,%1 \n" \ - " movgs %1,psr \n" \ - : "=r"(flags), "=r"(npsr) \ - : "i" (PSR_PIL_14), "i" (~PSR_PIL) \ - : "memory"); \ -} while(0) - -#define __local_irq_restore(flags) \ -do { \ - typecheck(unsigned long, flags); \ - asm volatile(" movgs %0,psr \n" \ - : \ - : "r" (flags) \ - : "memory"); \ -} while(0) - -#define __irqs_disabled() \ - ((__get_PSR() & PSR_PIL) >= PSR_PIL_14) - -/* * Force strict CPU ordering. */ #define nop() asm volatile ("nop"::) diff --git a/arch/frv/lib/Makefile b/arch/frv/lib/Makefile index f4709756d0d9..4ff2fb1e6b16 100644 --- a/arch/frv/lib/Makefile +++ b/arch/frv/lib/Makefile @@ -5,4 +5,4 @@ lib-y := \ __ashldi3.o __lshrdi3.o __muldi3.o __ashrdi3.o __negdi2.o __ucmpdi2.o \ checksum.o memcpy.o memset.o atomic-ops.o atomic64-ops.o \ - outsl_ns.o outsl_sw.o insl_ns.o insl_sw.o cache.o perf_event.o + outsl_ns.o outsl_sw.o insl_ns.o insl_sw.o cache.o diff --git a/arch/frv/lib/perf_event.c b/arch/frv/lib/perf_event.c deleted file mode 100644 index 9ac5acfd2e91..000000000000 --- a/arch/frv/lib/perf_event.c +++ /dev/null @@ -1,19 +0,0 @@ -/* Performance event handling - * - * Copyright (C) 2009 Red Hat, Inc. All Rights Reserved. - * Written by David Howells (dhowells@redhat.com) - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public Licence - * as published by the Free Software Foundation; either version - * 2 of the Licence, or (at your option) any later version. - */ - -#include <linux/perf_event.h> - -/* - * mark the performance event as pending - */ -void set_perf_event_pending(void) -{ -} diff --git a/arch/h8300/include/asm/irqflags.h b/arch/h8300/include/asm/irqflags.h new file mode 100644 index 000000000000..9617cd57aebd --- /dev/null +++ b/arch/h8300/include/asm/irqflags.h @@ -0,0 +1,43 @@ +#ifndef _H8300_IRQFLAGS_H +#define _H8300_IRQFLAGS_H + +static inline unsigned long arch_local_save_flags(void) +{ + unsigned long flags; + asm volatile ("stc ccr,%w0" : "=r" (flags)); + return flags; +} + +static inline void arch_local_irq_disable(void) +{ + asm volatile ("orc #0x80,ccr" : : : "memory"); +} + +static inline void arch_local_irq_enable(void) +{ + asm volatile ("andc #0x7f,ccr" : : : "memory"); +} + +static inline unsigned long arch_local_irq_save(void) +{ + unsigned long flags = arch_local_save_flags(); + arch_local_irq_disable(); + return flags; +} + +static inline void arch_local_irq_restore(unsigned long flags) +{ + asm volatile ("ldc %w0,ccr" : : "r" (flags) : "memory"); +} + +static inline bool arch_irqs_disabled_flags(unsigned long flags) +{ + return (flags & 0x80) == 0x80; +} + +static inline bool arch_irqs_disabled(void) +{ + return arch_irqs_disabled_flags(arch_local_save_flags()); +} + +#endif /* _H8300_IRQFLAGS_H */ diff --git a/arch/h8300/include/asm/system.h b/arch/h8300/include/asm/system.h index 16bf1560ff68..2c2382e50d93 100644 --- a/arch/h8300/include/asm/system.h +++ b/arch/h8300/include/asm/system.h @@ -2,6 +2,7 @@ #define _H8300_SYSTEM_H #include <linux/linkage.h> +#include <linux/irqflags.h> struct pt_regs; @@ -51,31 +52,8 @@ asmlinkage void resume(void); (last) = _last; \ } -#define __sti() asm volatile ("andc #0x7f,ccr") -#define __cli() asm volatile ("orc #0x80,ccr") - -#define __save_flags(x) \ - asm volatile ("stc ccr,%w0":"=r" (x)) - -#define __restore_flags(x) \ - asm volatile ("ldc %w0,ccr": :"r" (x)) - -#define irqs_disabled() \ -({ \ - unsigned char flags; \ - __save_flags(flags); \ - ((flags & 0x80) == 0x80); \ -}) - #define iret() __asm__ __volatile__ ("rte": : :"memory", "sp", "cc") -/* For spinlocks etc */ -#define local_irq_disable() __cli() -#define local_irq_enable() __sti() -#define local_irq_save(x) ({ __save_flags(x); local_irq_disable(); }) -#define local_irq_restore(x) __restore_flags(x) -#define local_save_flags(x) __save_flags(x) - /* * Force strict CPU ordering. * Not really required on H8... diff --git a/arch/ia64/Kconfig b/arch/ia64/Kconfig index ba22849ee3ec..7c82fa1fc911 100644 --- a/arch/ia64/Kconfig +++ b/arch/ia64/Kconfig @@ -53,6 +53,9 @@ config MMU bool default y +config ARCH_DMA_ADDR_T_64BIT + def_bool y + config NEED_DMA_MAP_STATE def_bool y @@ -62,6 +65,9 @@ config NEED_SG_DMA_LENGTH config SWIOTLB bool +config STACKTRACE_SUPPORT + def_bool y + config GENERIC_LOCKBREAK def_bool n @@ -683,8 +689,10 @@ source "lib/Kconfig" # Use the generic interrupt handling code in kernel/irq/: # config GENERIC_HARDIRQS - bool - default y + def_bool y + +config GENERIC_HARDIRQS_NO__DO_IRQ + def_bool y config GENERIC_IRQ_PROBE bool diff --git a/arch/ia64/include/asm/compat.h b/arch/ia64/include/asm/compat.h deleted file mode 100644 index 9301a2821615..000000000000 --- a/arch/ia64/include/asm/compat.h +++ /dev/null @@ -1,208 +0,0 @@ -#ifndef _ASM_IA64_COMPAT_H -#define _ASM_IA64_COMPAT_H -/* - * Architecture specific compatibility types - */ -#include <linux/types.h> - -#define COMPAT_USER_HZ 100 -#define COMPAT_UTS_MACHINE "i686\0\0\0" - -typedef u32 compat_size_t; -typedef s32 compat_ssize_t; -typedef s32 compat_time_t; -typedef s32 compat_clock_t; -typedef s32 compat_key_t; -typedef s32 compat_pid_t; -typedef u16 __compat_uid_t; -typedef u16 __compat_gid_t; -typedef u32 __compat_uid32_t; -typedef u32 __compat_gid32_t; -typedef u16 compat_mode_t; -typedef u32 compat_ino_t; -typedef u16 compat_dev_t; -typedef s32 compat_off_t; -typedef s64 compat_loff_t; -typedef u16 compat_nlink_t; -typedef u16 compat_ipc_pid_t; -typedef s32 compat_daddr_t; -typedef u32 compat_caddr_t; -typedef __kernel_fsid_t compat_fsid_t; -typedef s32 compat_timer_t; - -typedef s32 compat_int_t; -typedef s32 compat_long_t; -typedef s64 __attribute__((aligned(4))) compat_s64; -typedef u32 compat_uint_t; -typedef u32 compat_ulong_t; -typedef u64 __attribute__((aligned(4))) compat_u64; - -struct compat_timespec { - compat_time_t tv_sec; - s32 tv_nsec; -}; - -struct compat_timeval { - compat_time_t tv_sec; - s32 tv_usec; -}; - -struct compat_stat { - compat_dev_t st_dev; - u16 __pad1; - compat_ino_t st_ino; - compat_mode_t st_mode; - compat_nlink_t st_nlink; - __compat_uid_t st_uid; - __compat_gid_t st_gid; - compat_dev_t st_rdev; - u16 __pad2; - u32 st_size; - u32 st_blksize; - u32 st_blocks; - u32 st_atime; - u32 st_atime_nsec; - u32 st_mtime; - u32 st_mtime_nsec; - u32 st_ctime; - u32 st_ctime_nsec; - u32 __unused4; - u32 __unused5; -}; - -struct compat_flock { - short l_type; - short l_whence; - compat_off_t l_start; - compat_off_t l_len; - compat_pid_t l_pid; -}; - -#define F_GETLK64 12 -#define F_SETLK64 13 -#define F_SETLKW64 14 - -/* - * IA32 uses 4 byte alignment for 64 bit quantities, - * so we need to pack this structure. - */ -struct compat_flock64 { - short l_type; - short l_whence; - compat_loff_t l_start; - compat_loff_t l_len; - compat_pid_t l_pid; -} __attribute__((packed)); - -struct compat_statfs { - int f_type; - int f_bsize; - int f_blocks; - int f_bfree; - int f_bavail; - int f_files; - int f_ffree; - compat_fsid_t f_fsid; - int f_namelen; /* SunOS ignores this field. */ - int f_frsize; - int f_spare[5]; -}; - -#define COMPAT_RLIM_OLD_INFINITY 0x7fffffff -#define COMPAT_RLIM_INFINITY 0xffffffff - -typedef u32 compat_old_sigset_t; /* at least 32 bits */ - -#define _COMPAT_NSIG 64 -#define _COMPAT_NSIG_BPW 32 - -typedef u32 compat_sigset_word; - -#define COMPAT_OFF_T_MAX 0x7fffffff -#define COMPAT_LOFF_T_MAX 0x7fffffffffffffffL - -struct compat_ipc64_perm { - compat_key_t key; - __compat_uid32_t uid; - __compat_gid32_t gid; - __compat_uid32_t cuid; - __compat_gid32_t cgid; - unsigned short mode; - unsigned short __pad1; - unsigned short seq; - unsigned short __pad2; - compat_ulong_t unused1; - compat_ulong_t unused2; -}; - -struct compat_semid64_ds { - struct compat_ipc64_perm sem_perm; - compat_time_t sem_otime; - compat_ulong_t __unused1; - compat_time_t sem_ctime; - compat_ulong_t __unused2; - compat_ulong_t sem_nsems; - compat_ulong_t __unused3; - compat_ulong_t __unused4; -}; - -struct compat_msqid64_ds { - struct compat_ipc64_perm msg_perm; - compat_time_t msg_stime; - compat_ulong_t __unused1; - compat_time_t msg_rtime; - compat_ulong_t __unused2; - compat_time_t msg_ctime; - compat_ulong_t __unused3; - compat_ulong_t msg_cbytes; - compat_ulong_t msg_qnum; - compat_ulong_t msg_qbytes; - compat_pid_t msg_lspid; - compat_pid_t msg_lrpid; - compat_ulong_t __unused4; - compat_ulong_t __unused5; -}; - -struct compat_shmid64_ds { - struct compat_ipc64_perm shm_perm; - compat_size_t shm_segsz; - compat_time_t shm_atime; - compat_ulong_t __unused1; - compat_time_t shm_dtime; - compat_ulong_t __unused2; - compat_time_t shm_ctime; - compat_ulong_t __unused3; - compat_pid_t shm_cpid; - compat_pid_t shm_lpid; - compat_ulong_t shm_nattch; - compat_ulong_t __unused4; - compat_ulong_t __unused5; -}; - -/* - * A pointer passed in from user mode. This should not be used for syscall parameters, - * just declare them as pointers because the syscall entry code will have appropriately - * converted them already. - */ -typedef u32 compat_uptr_t; - -static inline void __user * -compat_ptr (compat_uptr_t uptr) -{ - return (void __user *) (unsigned long) uptr; -} - -static inline compat_uptr_t -ptr_to_compat(void __user *uptr) -{ - return (u32)(unsigned long)uptr; -} - -static __inline__ void __user * -arch_compat_alloc_user_space (long len) -{ - struct pt_regs *regs = task_pt_regs(current); - return (void __user *) (((regs->r12 & 0xffffffff) & -16) - len); -} - -#endif /* _ASM_IA64_COMPAT_H */ diff --git a/arch/ia64/include/asm/hardirq.h b/arch/ia64/include/asm/hardirq.h index d514cd9edb49..8fb7d33a661f 100644 --- a/arch/ia64/include/asm/hardirq.h +++ b/arch/ia64/include/asm/hardirq.h @@ -6,12 +6,6 @@ * David Mosberger-Tang <davidm@hpl.hp.com> */ - -#include <linux/threads.h> -#include <linux/irq.h> - -#include <asm/processor.h> - /* * No irq_cpustat_t for IA-64. The data is held in the per-CPU data structure. */ @@ -20,6 +14,11 @@ #define local_softirq_pending() (local_cpu_data->softirq_pending) +#include <linux/threads.h> +#include <linux/irq.h> + +#include <asm/processor.h> + extern void __iomem *ipi_base_addr; void ack_bad_irq(unsigned int irq); diff --git a/arch/ia64/include/asm/iommu_table.h b/arch/ia64/include/asm/iommu_table.h new file mode 100644 index 000000000000..92c8d36ae5ae --- /dev/null +++ b/arch/ia64/include/asm/iommu_table.h @@ -0,0 +1,6 @@ +#ifndef _ASM_IA64_IOMMU_TABLE_H +#define _ASM_IA64_IOMMU_TABLE_H + +#define IOMMU_INIT_POST(_detect) + +#endif /* _ASM_IA64_IOMMU_TABLE_H */ diff --git a/arch/ia64/include/asm/irqflags.h b/arch/ia64/include/asm/irqflags.h new file mode 100644 index 000000000000..f82d6be2ecd2 --- /dev/null +++ b/arch/ia64/include/asm/irqflags.h @@ -0,0 +1,94 @@ +/* + * IRQ flags defines. + * + * Copyright (C) 1998-2003 Hewlett-Packard Co + * David Mosberger-Tang <davidm@hpl.hp.com> + * Copyright (C) 1999 Asit Mallick <asit.k.mallick@intel.com> + * Copyright (C) 1999 Don Dugger <don.dugger@intel.com> + */ + +#ifndef _ASM_IA64_IRQFLAGS_H +#define _ASM_IA64_IRQFLAGS_H + +#ifdef CONFIG_IA64_DEBUG_IRQ +extern unsigned long last_cli_ip; +static inline void arch_maybe_save_ip(unsigned long flags) +{ + if (flags & IA64_PSR_I) + last_cli_ip = ia64_getreg(_IA64_REG_IP); +} +#else +#define arch_maybe_save_ip(flags) do {} while (0) +#endif + +/* + * - clearing psr.i is implicitly serialized (visible by next insn) + * - setting psr.i requires data serialization + * - we need a stop-bit before reading PSR because we sometimes + * write a floating-point register right before reading the PSR + * and that writes to PSR.mfl + */ + +static inline unsigned long arch_local_save_flags(void) +{ + ia64_stop(); +#ifdef CONFIG_PARAVIRT + return ia64_get_psr_i(); +#else + return ia64_getreg(_IA64_REG_PSR); +#endif +} + +static inline unsigned long arch_local_irq_save(void) +{ + unsigned long flags = arch_local_save_flags(); + + ia64_stop(); + ia64_rsm(IA64_PSR_I); + arch_maybe_save_ip(flags); + return flags; +} + +static inline void arch_local_irq_disable(void) +{ +#ifdef CONFIG_IA64_DEBUG_IRQ + arch_local_irq_save(); +#else + ia64_stop(); + ia64_rsm(IA64_PSR_I); +#endif +} + +static inline void arch_local_irq_enable(void) +{ + ia64_stop(); + ia64_ssm(IA64_PSR_I); + ia64_srlz_d(); +} + +static inline void arch_local_irq_restore(unsigned long flags) +{ +#ifdef CONFIG_IA64_DEBUG_IRQ + unsigned long old_psr = arch_local_save_flags(); +#endif + ia64_intrin_local_irq_restore(flags & IA64_PSR_I); + arch_maybe_save_ip(old_psr & ~flags); +} + +static inline bool arch_irqs_disabled_flags(unsigned long flags) +{ + return (flags & IA64_PSR_I) == 0; +} + +static inline bool arch_irqs_disabled(void) +{ + return arch_irqs_disabled_flags(arch_local_save_flags()); +} + +static inline void arch_safe_halt(void) +{ + ia64_pal_halt_light(); /* PAL_HALT_LIGHT */ +} + + +#endif /* _ASM_IA64_IRQFLAGS_H */ diff --git a/arch/ia64/include/asm/system.h b/arch/ia64/include/asm/system.h index 9f342a574ce8..6cca30705d50 100644 --- a/arch/ia64/include/asm/system.h +++ b/arch/ia64/include/asm/system.h @@ -107,87 +107,11 @@ extern struct ia64_boot_param { */ #define set_mb(var, value) do { (var) = (value); mb(); } while (0) -#define safe_halt() ia64_pal_halt_light() /* PAL_HALT_LIGHT */ - /* * The group barrier in front of the rsm & ssm are necessary to ensure * that none of the previous instructions in the same group are * affected by the rsm/ssm. */ -/* For spinlocks etc */ - -/* - * - clearing psr.i is implicitly serialized (visible by next insn) - * - setting psr.i requires data serialization - * - we need a stop-bit before reading PSR because we sometimes - * write a floating-point register right before reading the PSR - * and that writes to PSR.mfl - */ -#ifdef CONFIG_PARAVIRT -#define __local_save_flags() ia64_get_psr_i() -#else -#define __local_save_flags() ia64_getreg(_IA64_REG_PSR) -#endif - -#define __local_irq_save(x) \ -do { \ - ia64_stop(); \ - (x) = __local_save_flags(); \ - ia64_stop(); \ - ia64_rsm(IA64_PSR_I); \ -} while (0) - -#define __local_irq_disable() \ -do { \ - ia64_stop(); \ - ia64_rsm(IA64_PSR_I); \ -} while (0) - -#define __local_irq_restore(x) ia64_intrin_local_irq_restore((x) & IA64_PSR_I) - -#ifdef CONFIG_IA64_DEBUG_IRQ - - extern unsigned long last_cli_ip; - -# define __save_ip() last_cli_ip = ia64_getreg(_IA64_REG_IP) - -# define local_irq_save(x) \ -do { \ - unsigned long __psr; \ - \ - __local_irq_save(__psr); \ - if (__psr & IA64_PSR_I) \ - __save_ip(); \ - (x) = __psr; \ -} while (0) - -# define local_irq_disable() do { unsigned long __x; local_irq_save(__x); } while (0) - -# define local_irq_restore(x) \ -do { \ - unsigned long __old_psr, __psr = (x); \ - \ - local_save_flags(__old_psr); \ - __local_irq_restore(__psr); \ - if ((__old_psr & IA64_PSR_I) && !(__psr & IA64_PSR_I)) \ - __save_ip(); \ -} while (0) - -#else /* !CONFIG_IA64_DEBUG_IRQ */ -# define local_irq_save(x) __local_irq_save(x) -# define local_irq_disable() __local_irq_disable() -# define local_irq_restore(x) __local_irq_restore(x) -#endif /* !CONFIG_IA64_DEBUG_IRQ */ - -#define local_irq_enable() ({ ia64_stop(); ia64_ssm(IA64_PSR_I); ia64_srlz_d(); }) -#define local_save_flags(flags) ({ ia64_stop(); (flags) = __local_save_flags(); }) - -#define irqs_disabled() \ -({ \ - unsigned long __ia64_id_flags; \ - local_save_flags(__ia64_id_flags); \ - (__ia64_id_flags & IA64_PSR_I) == 0; \ -}) #ifdef __KERNEL__ @@ -272,10 +196,6 @@ void cpu_idle_wait(void); void default_idle(void); -#ifdef CONFIG_VIRT_CPU_ACCOUNTING -extern void account_system_vtime(struct task_struct *); -#endif - #endif /* __KERNEL__ */ #endif /* __ASSEMBLY__ */ diff --git a/arch/ia64/kernel/Makefile b/arch/ia64/kernel/Makefile index db10b1e378b0..395c2f216dd8 100644 --- a/arch/ia64/kernel/Makefile +++ b/arch/ia64/kernel/Makefile @@ -34,6 +34,7 @@ obj-$(CONFIG_AUDIT) += audit.o obj-$(CONFIG_PCI_MSI) += msi_ia64.o mca_recovery-y += mca_drv.o mca_drv_asm.o obj-$(CONFIG_IA64_MC_ERR_INJECT)+= err_inject.o +obj-$(CONFIG_STACKTRACE) += stacktrace.o obj-$(CONFIG_PARAVIRT) += paravirt.o paravirtentry.o \ paravirt_patch.o diff --git a/arch/ia64/kernel/cyclone.c b/arch/ia64/kernel/cyclone.c index 71e35864d2e2..d52f1f78eff2 100644 --- a/arch/ia64/kernel/cyclone.c +++ b/arch/ia64/kernel/cyclone.c @@ -59,13 +59,13 @@ int __init init_cyclone_clock(void) return -ENODEV; } base = readq(reg); + iounmap(reg); if(!base){ printk(KERN_ERR "Summit chipset: Could not find valid CBAR" " value.\n"); use_cyclone = 0; return -ENODEV; } - iounmap(reg); /* setup PMCC */ offset = (base + CYCLONE_PMCC_OFFSET); diff --git a/arch/ia64/kernel/iosapic.c b/arch/ia64/kernel/iosapic.c index 7ded76658d2d..22c38404f539 100644 --- a/arch/ia64/kernel/iosapic.c +++ b/arch/ia64/kernel/iosapic.c @@ -108,10 +108,6 @@ #define DBG(fmt...) #endif -#define NR_PREALLOCATE_RTE_ENTRIES \ - (PAGE_SIZE / sizeof(struct iosapic_rte_info)) -#define RTE_PREALLOCATED (1) - static DEFINE_SPINLOCK(iosapic_lock); /* @@ -136,7 +132,6 @@ struct iosapic_rte_info { struct list_head rte_list; /* RTEs sharing the same vector */ char rte_index; /* IOSAPIC RTE index */ int refcnt; /* reference counter */ - unsigned int flags; /* flags */ struct iosapic *iosapic; } ____cacheline_aligned; @@ -155,9 +150,6 @@ static struct iosapic_intr_info { static unsigned char pcat_compat __devinitdata; /* 8259 compatibility flag */ -static int iosapic_kmalloc_ok; -static LIST_HEAD(free_rte_list); - static inline void iosapic_write(struct iosapic *iosapic, unsigned int reg, u32 val) { @@ -394,7 +386,7 @@ iosapic_startup_level_irq (unsigned int irq) } static void -iosapic_end_level_irq (unsigned int irq) +iosapic_unmask_level_irq (unsigned int irq) { ia64_vector vec = irq_to_vector(irq); struct iosapic_rte_info *rte; @@ -404,7 +396,8 @@ iosapic_end_level_irq (unsigned int irq) if (unlikely(irq_desc[irq].status & IRQ_MOVE_PENDING)) { do_unmask_irq = 1; mask_irq(irq); - } + } else + unmask_irq(irq); list_for_each_entry(rte, &iosapic_intr_info[irq].rtes, rte_list) iosapic_eoi(rte->iosapic->addr, vec); @@ -427,9 +420,8 @@ static struct irq_chip irq_type_iosapic_level = { .enable = iosapic_enable_level_irq, .disable = iosapic_disable_level_irq, .ack = iosapic_ack_level_irq, - .end = iosapic_end_level_irq, .mask = mask_irq, - .unmask = unmask_irq, + .unmask = iosapic_unmask_level_irq, .set_affinity = iosapic_set_affinity }; @@ -552,37 +544,6 @@ iosapic_reassign_vector (int irq) } } -static struct iosapic_rte_info * __init_refok iosapic_alloc_rte (void) -{ - int i; - struct iosapic_rte_info *rte; - int preallocated = 0; - - if (!iosapic_kmalloc_ok && list_empty(&free_rte_list)) { - rte = alloc_bootmem(sizeof(struct iosapic_rte_info) * - NR_PREALLOCATE_RTE_ENTRIES); - for (i = 0; i < NR_PREALLOCATE_RTE_ENTRIES; i++, rte++) - list_add(&rte->rte_list, &free_rte_list); - } - - if (!list_empty(&free_rte_list)) { - rte = list_entry(free_rte_list.next, struct iosapic_rte_info, - rte_list); - list_del(&rte->rte_list); - preallocated++; - } else { - rte = kmalloc(sizeof(struct iosapic_rte_info), GFP_ATOMIC); - if (!rte) - return NULL; - } - - memset(rte, 0, sizeof(struct iosapic_rte_info)); - if (preallocated) - rte->flags |= RTE_PREALLOCATED; - - return rte; -} - static inline int irq_is_shared (int irq) { return (iosapic_intr_info[irq].count > 1); @@ -615,7 +576,7 @@ register_intr (unsigned int gsi, int irq, unsigned char delivery, rte = find_rte(irq, gsi); if (!rte) { - rte = iosapic_alloc_rte(); + rte = kzalloc(sizeof (*rte), GFP_ATOMIC); if (!rte) { printk(KERN_WARNING "%s: cannot allocate memory\n", __func__); @@ -658,6 +619,10 @@ register_intr (unsigned int gsi, int irq, unsigned char delivery, idesc->chip->name, irq_type->name); idesc->chip = irq_type; } + if (trigger == IOSAPIC_EDGE) + __set_irq_handler_unlocked(irq, handle_edge_irq); + else + __set_irq_handler_unlocked(irq, handle_level_irq); return 0; } @@ -1161,10 +1126,3 @@ map_iosapic_to_node(unsigned int gsi_base, int node) return; } #endif - -static int __init iosapic_enable_kmalloc (void) -{ - iosapic_kmalloc_ok = 1; - return 0; -} -core_initcall (iosapic_enable_kmalloc); diff --git a/arch/ia64/kernel/irq_ia64.c b/arch/ia64/kernel/irq_ia64.c index f14c35f9b03a..9a26015c3e50 100644 --- a/arch/ia64/kernel/irq_ia64.c +++ b/arch/ia64/kernel/irq_ia64.c @@ -30,6 +30,7 @@ #include <linux/bitops.h> #include <linux/irq.h> #include <linux/ratelimit.h> +#include <linux/acpi.h> #include <asm/delay.h> #include <asm/intrinsics.h> @@ -635,6 +636,7 @@ ia64_native_register_percpu_irq (ia64_vector vec, struct irqaction *action) desc->chip = &irq_type_ia64_lsapic; if (action) setup_irq(irq, action); + set_irq_handler(irq, handle_percpu_irq); } void __init @@ -650,6 +652,9 @@ ia64_native_register_ipi(void) void __init init_IRQ (void) { +#ifdef CONFIG_ACPI + acpi_boot_init(); +#endif ia64_register_ipi(); register_percpu_irq(IA64_SPURIOUS_INT_VECTOR, NULL); #ifdef CONFIG_SMP diff --git a/arch/ia64/kernel/mca.c b/arch/ia64/kernel/mca.c index a0220dc5ff42..1753f6a30d55 100644 --- a/arch/ia64/kernel/mca.c +++ b/arch/ia64/kernel/mca.c @@ -2055,25 +2055,6 @@ ia64_mca_init(void) IA64_MCA_DEBUG("%s: registered OS INIT handler with SAL\n", __func__); - /* - * Configure the CMCI/P vector and handler. Interrupts for CMC are - * per-processor, so AP CMC interrupts are setup in smp_callin() (smpboot.c). - */ - register_percpu_irq(IA64_CMC_VECTOR, &cmci_irqaction); - register_percpu_irq(IA64_CMCP_VECTOR, &cmcp_irqaction); - ia64_mca_cmc_vector_setup(); /* Setup vector on BSP */ - - /* Setup the MCA rendezvous interrupt vector */ - register_percpu_irq(IA64_MCA_RENDEZ_VECTOR, &mca_rdzv_irqaction); - - /* Setup the MCA wakeup interrupt vector */ - register_percpu_irq(IA64_MCA_WAKEUP_VECTOR, &mca_wkup_irqaction); - -#ifdef CONFIG_ACPI - /* Setup the CPEI/P handler */ - register_percpu_irq(IA64_CPEP_VECTOR, &mca_cpep_irqaction); -#endif - /* Initialize the areas set aside by the OS to buffer the * platform/processor error states for MCA/INIT/CMC * handling. @@ -2103,6 +2084,25 @@ ia64_mca_late_init(void) if (!mca_init) return 0; + /* + * Configure the CMCI/P vector and handler. Interrupts for CMC are + * per-processor, so AP CMC interrupts are setup in smp_callin() (smpboot.c). + */ + register_percpu_irq(IA64_CMC_VECTOR, &cmci_irqaction); + register_percpu_irq(IA64_CMCP_VECTOR, &cmcp_irqaction); + ia64_mca_cmc_vector_setup(); /* Setup vector on BSP */ + + /* Setup the MCA rendezvous interrupt vector */ + register_percpu_irq(IA64_MCA_RENDEZ_VECTOR, &mca_rdzv_irqaction); + + /* Setup the MCA wakeup interrupt vector */ + register_percpu_irq(IA64_MCA_WAKEUP_VECTOR, &mca_wkup_irqaction); + +#ifdef CONFIG_ACPI + /* Setup the CPEI/P handler */ + register_percpu_irq(IA64_CPEP_VECTOR, &mca_cpep_irqaction); +#endif + register_hotcpu_notifier(&mca_cpu_notifier); /* Setup the CMCI/P vector and handler */ diff --git a/arch/ia64/kernel/msi_ia64.c b/arch/ia64/kernel/msi_ia64.c index 4a746ea838ff..00b19a416eab 100644 --- a/arch/ia64/kernel/msi_ia64.c +++ b/arch/ia64/kernel/msi_ia64.c @@ -104,8 +104,8 @@ static int ia64_msi_retrigger_irq(unsigned int irq) */ static struct irq_chip ia64_msi_chip = { .name = "PCI-MSI", - .mask = mask_msi_irq, - .unmask = unmask_msi_irq, + .irq_mask = mask_msi_irq, + .irq_unmask = unmask_msi_irq, .ack = ia64_ack_msi_irq, #ifdef CONFIG_SMP .set_affinity = ia64_set_msi_irq_affinity, @@ -160,8 +160,8 @@ static int dmar_msi_set_affinity(unsigned int irq, const struct cpumask *mask) static struct irq_chip dmar_msi_type = { .name = "DMAR_MSI", - .unmask = dmar_msi_unmask, - .mask = dmar_msi_mask, + .irq_unmask = dmar_msi_unmask, + .irq_mask = dmar_msi_mask, .ack = ia64_ack_msi_irq, #ifdef CONFIG_SMP .set_affinity = dmar_msi_set_affinity, diff --git a/arch/ia64/kernel/palinfo.c b/arch/ia64/kernel/palinfo.c index fdf6f9d013e5..77597e5ea60a 100644 --- a/arch/ia64/kernel/palinfo.c +++ b/arch/ia64/kernel/palinfo.c @@ -434,7 +434,7 @@ register_info(char *page) unsigned long phys_stacked; pal_hints_u_t hints; unsigned long iregs, dregs; - char *info_type[]={ + static const char * const info_type[] = { "Implemented AR(s)", "AR(s) with read side-effects", "Implemented CR(s)", diff --git a/arch/ia64/kernel/perfmon.c b/arch/ia64/kernel/perfmon.c index cce050e85c73..6b1852f7f972 100644 --- a/arch/ia64/kernel/perfmon.c +++ b/arch/ia64/kernel/perfmon.c @@ -1573,7 +1573,7 @@ pfm_read(struct file *filp, char __user *buf, size_t size, loff_t *ppos) return -EINVAL; } - ctx = (pfm_context_t *)filp->private_data; + ctx = filp->private_data; if (ctx == NULL) { printk(KERN_ERR "perfmon: pfm_read: NULL ctx [%d]\n", task_pid_nr(current)); return -EINVAL; @@ -1673,7 +1673,7 @@ pfm_poll(struct file *filp, poll_table * wait) return 0; } - ctx = (pfm_context_t *)filp->private_data; + ctx = filp->private_data; if (ctx == NULL) { printk(KERN_ERR "perfmon: pfm_poll: NULL ctx [%d]\n", task_pid_nr(current)); return 0; @@ -1733,7 +1733,7 @@ pfm_fasync(int fd, struct file *filp, int on) return -EBADF; } - ctx = (pfm_context_t *)filp->private_data; + ctx = filp->private_data; if (ctx == NULL) { printk(KERN_ERR "perfmon: pfm_fasync NULL ctx [%d]\n", task_pid_nr(current)); return -EBADF; @@ -1841,7 +1841,7 @@ pfm_flush(struct file *filp, fl_owner_t id) return -EBADF; } - ctx = (pfm_context_t *)filp->private_data; + ctx = filp->private_data; if (ctx == NULL) { printk(KERN_ERR "perfmon: pfm_flush: NULL ctx [%d]\n", task_pid_nr(current)); return -EBADF; @@ -1984,7 +1984,7 @@ pfm_close(struct inode *inode, struct file *filp) return -EBADF; } - ctx = (pfm_context_t *)filp->private_data; + ctx = filp->private_data; if (ctx == NULL) { printk(KERN_ERR "perfmon: pfm_close: NULL ctx [%d]\n", task_pid_nr(current)); return -EBADF; @@ -4907,7 +4907,7 @@ restart_args: goto error_args; } - ctx = (pfm_context_t *)file->private_data; + ctx = file->private_data; if (unlikely(ctx == NULL)) { DPRINT(("no context for fd %d\n", fd)); goto error_args; diff --git a/arch/ia64/kernel/salinfo.c b/arch/ia64/kernel/salinfo.c index aa8b5fa1a8de..45d7543b69cc 100644 --- a/arch/ia64/kernel/salinfo.c +++ b/arch/ia64/kernel/salinfo.c @@ -642,7 +642,7 @@ salinfo_init(void) for (i = 0; i < ARRAY_SIZE(salinfo_log_name); i++) { data = salinfo_data + i; data->type = i; - init_MUTEX(&data->mutex); + sema_init(&data->mutex, 1); dir = proc_mkdir(salinfo_log_name[i], salinfo_dir); if (!dir) continue; diff --git a/arch/ia64/kernel/setup.c b/arch/ia64/kernel/setup.c index 8fb958abf8d0..911cf9749700 100644 --- a/arch/ia64/kernel/setup.c +++ b/arch/ia64/kernel/setup.c @@ -594,10 +594,6 @@ setup_arch (char **cmdline_p) cpu_init(); /* initialize the bootstrap CPU */ mmu_context_init(); /* initialize context_id bitmap */ -#ifdef CONFIG_ACPI - acpi_boot_init(); -#endif - paravirt_banner(); paravirt_arch_setup_console(cmdline_p); diff --git a/arch/ia64/kernel/stacktrace.c b/arch/ia64/kernel/stacktrace.c new file mode 100644 index 000000000000..5af2783a87f4 --- /dev/null +++ b/arch/ia64/kernel/stacktrace.c @@ -0,0 +1,39 @@ +/* + * arch/ia64/kernel/stacktrace.c + * + * Stack trace management functions + * + */ +#include <linux/sched.h> +#include <linux/stacktrace.h> +#include <linux/module.h> + +static void +ia64_do_save_stack(struct unw_frame_info *info, void *arg) +{ + struct stack_trace *trace = arg; + unsigned long ip; + int skip = trace->skip; + + trace->nr_entries = 0; + do { + unw_get_ip(info, &ip); + if (ip == 0) + break; + if (skip == 0) { + trace->entries[trace->nr_entries++] = ip; + if (trace->nr_entries == trace->max_entries) + break; + } else + skip--; + } while (unw_unwind(info) >= 0); +} + +/* + * Save stack-backtrace addresses into a stack_trace buffer. + */ +void save_stack_trace(struct stack_trace *trace) +{ + unw_init_running(ia64_do_save_stack, trace); +} +EXPORT_SYMBOL(save_stack_trace); diff --git a/arch/ia64/kernel/unwind.c b/arch/ia64/kernel/unwind.c index b6c0e63a0bf6..fed6afa2e8a9 100644 --- a/arch/ia64/kernel/unwind.c +++ b/arch/ia64/kernel/unwind.c @@ -1204,10 +1204,10 @@ desc_spill_sprel_p (unsigned char qp, unw_word t, unsigned char abreg, unw_word static inline unw_hash_index_t hash (unsigned long ip) { -# define hashmagic 0x9e3779b97f4a7c16UL /* based on (sqrt(5)/2-1)*2^64 */ + /* magic number = ((sqrt(5)-1)/2)*2^64 */ + static const unsigned long hashmagic = 0x9e3779b97f4a7c16UL; - return (ip >> 4)*hashmagic >> (64 - UNW_LOG_HASH_SIZE); -#undef hashmagic + return (ip >> 4) * hashmagic >> (64 - UNW_LOG_HASH_SIZE); } static inline long @@ -1531,7 +1531,7 @@ build_script (struct unw_frame_info *info) struct unw_labeled_state *ls, *next; unsigned long ip = info->ip; struct unw_state_record sr; - struct unw_table *table; + struct unw_table *table, *prev; struct unw_reg_info *r; struct unw_insn insn; u8 *dp, *desc_end; @@ -1560,11 +1560,26 @@ build_script (struct unw_frame_info *info) STAT(parse_start = ia64_get_itc()); + prev = NULL; for (table = unw.tables; table; table = table->next) { if (ip >= table->start && ip < table->end) { + /* + * Leave the kernel unwind table at the very front, + * lest moving it breaks some assumption elsewhere. + * Otherwise, move the matching table to the second + * position in the list so that traversals can benefit + * from commonality in backtrace paths. + */ + if (prev && prev != unw.tables) { + /* unw is safe - we're already spinlocked */ + prev->next = table->next; + table->next = unw.tables->next; + unw.tables->next = table; + } e = lookup(table, ip - table->segment_base); break; } + prev = table; } if (!e) { /* no info, return default unwinder (leaf proc, no mem stack, no saved regs) */ diff --git a/arch/ia64/sn/kernel/msi_sn.c b/arch/ia64/sn/kernel/msi_sn.c index 0c72dd463831..a5e500f02853 100644 --- a/arch/ia64/sn/kernel/msi_sn.c +++ b/arch/ia64/sn/kernel/msi_sn.c @@ -228,8 +228,8 @@ static int sn_msi_retrigger_irq(unsigned int irq) static struct irq_chip sn_msi_chip = { .name = "PCI-MSI", - .mask = mask_msi_irq, - .unmask = unmask_msi_irq, + .irq_mask = mask_msi_irq, + .irq_unmask = unmask_msi_irq, .ack = sn_ack_msi_irq, #ifdef CONFIG_SMP .set_affinity = sn_set_msi_irq_affinity, diff --git a/arch/ia64/xen/xen_pv_ops.c b/arch/ia64/xen/xen_pv_ops.c index 8adc6a14272a..3e8d350fdf39 100644 --- a/arch/ia64/xen/xen_pv_ops.c +++ b/arch/ia64/xen/xen_pv_ops.c @@ -1136,7 +1136,6 @@ __initconst = { static void __init xen_patch_branch(unsigned long tag, unsigned long type) { - const unsigned long nelem = - sizeof(xen_branch_target) / sizeof(xen_branch_target[0]); - __paravirt_patch_apply_branch(tag, type, xen_branch_target, nelem); + __paravirt_patch_apply_branch(tag, type, xen_branch_target, + ARRAY_SIZE(xen_branch_target)); } diff --git a/arch/m32r/include/asm/elf.h b/arch/m32r/include/asm/elf.h index 2f85412ef730..b8da7d0574d2 100644 --- a/arch/m32r/include/asm/elf.h +++ b/arch/m32r/include/asm/elf.h @@ -82,9 +82,9 @@ typedef elf_fpreg_t elf_fpregset_t; * These are used to set parameters in the core dumps. */ #define ELF_CLASS ELFCLASS32 -#if defined(__LITTLE_ENDIAN) +#if defined(__LITTLE_ENDIAN__) #define ELF_DATA ELFDATA2LSB -#elif defined(__BIG_ENDIAN) +#elif defined(__BIG_ENDIAN__) #define ELF_DATA ELFDATA2MSB #else #error no endian defined diff --git a/arch/m32r/include/asm/irqflags.h b/arch/m32r/include/asm/irqflags.h new file mode 100644 index 000000000000..1f92d29982ae --- /dev/null +++ b/arch/m32r/include/asm/irqflags.h @@ -0,0 +1,104 @@ +/* + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (C) 2001 Hiroyuki Kondo, Hirokazu Takata, and Hitoshi Yamamoto + * Copyright (C) 2004, 2006 Hirokazu Takata <takata at linux-m32r.org> + */ + +#ifndef _ASM_M32R_IRQFLAGS_H +#define _ASM_M32R_IRQFLAGS_H + +#include <linux/types.h> + +static inline unsigned long arch_local_save_flags(void) +{ + unsigned long flags; + asm volatile("mvfc %0,psw" : "=r"(flags)); + return flags; +} + +static inline void arch_local_irq_disable(void) +{ +#if !defined(CONFIG_CHIP_M32102) && !defined(CONFIG_CHIP_M32104) + asm volatile ( + "clrpsw #0x40 -> nop" + : : : "memory"); +#else + unsigned long tmpreg0, tmpreg1; + asm volatile ( + "ld24 %0, #0 ; Use 32-bit insn. \n\t" + "mvfc %1, psw ; No interrupt can be accepted here. \n\t" + "mvtc %0, psw \n\t" + "and3 %0, %1, #0xffbf \n\t" + "mvtc %0, psw \n\t" + : "=&r" (tmpreg0), "=&r" (tmpreg1) + : + : "cbit", "memory"); +#endif +} + +static inline void arch_local_irq_enable(void) +{ +#if !defined(CONFIG_CHIP_M32102) && !defined(CONFIG_CHIP_M32104) + asm volatile ( + "setpsw #0x40 -> nop" + : : : "memory"); +#else + unsigned long tmpreg; + asm volatile ( + "mvfc %0, psw; \n\t" + "or3 %0, %0, #0x0040; \n\t" + "mvtc %0, psw; \n\t" + : "=&r" (tmpreg) + : + : "cbit", "memory"); +#endif +} + +static inline unsigned long arch_local_irq_save(void) +{ + unsigned long flags; + +#if !(defined(CONFIG_CHIP_M32102) || defined(CONFIG_CHIP_M32104)) + asm volatile ( + "mvfc %0, psw; \n\t" + "clrpsw #0x40 -> nop; \n\t" + : "=r" (flags) + : + : "memory"); +#else + unsigned long tmpreg; + asm volatile ( + "ld24 %1, #0 \n\t" + "mvfc %0, psw \n\t" + "mvtc %1, psw \n\t" + "and3 %1, %0, #0xffbf \n\t" + "mvtc %1, psw \n\t" + : "=r" (flags), "=&r" (tmpreg) + : + : "cbit", "memory"); +#endif + return flags; +} + +static inline void arch_local_irq_restore(unsigned long flags) +{ + asm volatile("mvtc %0,psw" + : + : "r" (flags) + : "cbit", "memory"); +} + +static inline bool arch_irqs_disabled_flags(unsigned long flags) +{ + return !(flags & 0x40); +} + +static inline bool arch_irqs_disabled(void) +{ + return arch_irqs_disabled_flags(arch_local_save_flags()); +} + +#endif /* _ASM_M32R_IRQFLAGS_H */ diff --git a/arch/m32r/include/asm/system.h b/arch/m32r/include/asm/system.h index c980f5ba8de7..13c46794ccb1 100644 --- a/arch/m32r/include/asm/system.h +++ b/arch/m32r/include/asm/system.h @@ -11,6 +11,7 @@ */ #include <linux/compiler.h> +#include <linux/irqflags.h> #include <asm/assembler.h> #ifdef __KERNEL__ @@ -54,71 +55,6 @@ ); \ } while(0) -/* Interrupt Control */ -#if !defined(CONFIG_CHIP_M32102) && !defined(CONFIG_CHIP_M32104) -#define local_irq_enable() \ - __asm__ __volatile__ ("setpsw #0x40 -> nop": : :"memory") -#define local_irq_disable() \ - __asm__ __volatile__ ("clrpsw #0x40 -> nop": : :"memory") -#else /* CONFIG_CHIP_M32102 || CONFIG_CHIP_M32104 */ -static inline void local_irq_enable(void) -{ - unsigned long tmpreg; - __asm__ __volatile__( - "mvfc %0, psw; \n\t" - "or3 %0, %0, #0x0040; \n\t" - "mvtc %0, psw; \n\t" - : "=&r" (tmpreg) : : "cbit", "memory"); -} - -static inline void local_irq_disable(void) -{ - unsigned long tmpreg0, tmpreg1; - __asm__ __volatile__( - "ld24 %0, #0 ; Use 32-bit insn. \n\t" - "mvfc %1, psw ; No interrupt can be accepted here. \n\t" - "mvtc %0, psw \n\t" - "and3 %0, %1, #0xffbf \n\t" - "mvtc %0, psw \n\t" - : "=&r" (tmpreg0), "=&r" (tmpreg1) : : "cbit", "memory"); -} -#endif /* CONFIG_CHIP_M32102 || CONFIG_CHIP_M32104 */ - -#define local_save_flags(x) \ - __asm__ __volatile__("mvfc %0,psw" : "=r"(x) : /* no input */) - -#define local_irq_restore(x) \ - __asm__ __volatile__("mvtc %0,psw" : /* no outputs */ \ - : "r" (x) : "cbit", "memory") - -#if !(defined(CONFIG_CHIP_M32102) || defined(CONFIG_CHIP_M32104)) -#define local_irq_save(x) \ - __asm__ __volatile__( \ - "mvfc %0, psw; \n\t" \ - "clrpsw #0x40 -> nop; \n\t" \ - : "=r" (x) : /* no input */ : "memory") -#else /* CONFIG_CHIP_M32102 || CONFIG_CHIP_M32104 */ -#define local_irq_save(x) \ - ({ \ - unsigned long tmpreg; \ - __asm__ __volatile__( \ - "ld24 %1, #0 \n\t" \ - "mvfc %0, psw \n\t" \ - "mvtc %1, psw \n\t" \ - "and3 %1, %0, #0xffbf \n\t" \ - "mvtc %1, psw \n\t" \ - : "=r" (x), "=&r" (tmpreg) \ - : : "cbit", "memory"); \ - }) -#endif /* CONFIG_CHIP_M32102 || CONFIG_CHIP_M32104 */ - -#define irqs_disabled() \ - ({ \ - unsigned long flags; \ - local_save_flags(flags); \ - !(flags & 0x40); \ - }) - #define nop() __asm__ __volatile__ ("nop" : : ) #define xchg(ptr, x) \ diff --git a/arch/m32r/kernel/.gitignore b/arch/m32r/kernel/.gitignore new file mode 100644 index 000000000000..c5f676c3c224 --- /dev/null +++ b/arch/m32r/kernel/.gitignore @@ -0,0 +1 @@ +vmlinux.lds diff --git a/arch/m32r/kernel/irq.c b/arch/m32r/kernel/irq.c index 3c71f776872c..7db26f1f082d 100644 --- a/arch/m32r/kernel/irq.c +++ b/arch/m32r/kernel/irq.c @@ -51,7 +51,7 @@ int show_interrupts(struct seq_file *p, void *v) for_each_online_cpu(j) seq_printf(p, "%10u ", kstat_irqs_cpu(i, j)); #endif - seq_printf(p, " %14s", irq_desc[i].chip->typename); + seq_printf(p, " %14s", irq_desc[i].chip->name); seq_printf(p, " %s", action->name); for (action=action->next; action; action = action->next) diff --git a/arch/m32r/kernel/signal.c b/arch/m32r/kernel/signal.c index 7bbe38645ed5..a08697f0886d 100644 --- a/arch/m32r/kernel/signal.c +++ b/arch/m32r/kernel/signal.c @@ -28,6 +28,8 @@ #define DEBUG_SIG 0 +#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP))) + asmlinkage int sys_sigaltstack(const stack_t __user *uss, stack_t __user *uoss, unsigned long r2, unsigned long r3, unsigned long r4, @@ -254,7 +256,7 @@ give_sigsegv: static int prev_insn(struct pt_regs *regs) { u16 inst; - if (get_user(&inst, (u16 __user *)(regs->bpc - 2))) + if (get_user(inst, (u16 __user *)(regs->bpc - 2))) return -EFAULT; if ((inst & 0xfff0) == 0x10f0) /* trap ? */ regs->bpc -= 2; diff --git a/arch/m32r/platforms/m32104ut/setup.c b/arch/m32r/platforms/m32104ut/setup.c index 922fdfdadeaa..402a59d7219b 100644 --- a/arch/m32r/platforms/m32104ut/setup.c +++ b/arch/m32r/platforms/m32104ut/setup.c @@ -65,7 +65,7 @@ static void shutdown_m32104ut_irq(unsigned int irq) static struct irq_chip m32104ut_irq_type = { - .typename = "M32104UT-IRQ", + .name = "M32104UT-IRQ", .startup = startup_m32104ut_irq, .shutdown = shutdown_m32104ut_irq, .enable = enable_m32104ut_irq, diff --git a/arch/m32r/platforms/m32700ut/setup.c b/arch/m32r/platforms/m32700ut/setup.c index 9c1bc7487c1e..80b1a026795a 100644 --- a/arch/m32r/platforms/m32700ut/setup.c +++ b/arch/m32r/platforms/m32700ut/setup.c @@ -71,7 +71,7 @@ static void shutdown_m32700ut_irq(unsigned int irq) static struct irq_chip m32700ut_irq_type = { - .typename = "M32700UT-IRQ", + .name = "M32700UT-IRQ", .startup = startup_m32700ut_irq, .shutdown = shutdown_m32700ut_irq, .enable = enable_m32700ut_irq, @@ -148,7 +148,7 @@ static void shutdown_m32700ut_pld_irq(unsigned int irq) static struct irq_chip m32700ut_pld_irq_type = { - .typename = "M32700UT-PLD-IRQ", + .name = "M32700UT-PLD-IRQ", .startup = startup_m32700ut_pld_irq, .shutdown = shutdown_m32700ut_pld_irq, .enable = enable_m32700ut_pld_irq, @@ -217,7 +217,7 @@ static void shutdown_m32700ut_lanpld_irq(unsigned int irq) static struct irq_chip m32700ut_lanpld_irq_type = { - .typename = "M32700UT-PLD-LAN-IRQ", + .name = "M32700UT-PLD-LAN-IRQ", .startup = startup_m32700ut_lanpld_irq, .shutdown = shutdown_m32700ut_lanpld_irq, .enable = enable_m32700ut_lanpld_irq, @@ -286,7 +286,7 @@ static void shutdown_m32700ut_lcdpld_irq(unsigned int irq) static struct irq_chip m32700ut_lcdpld_irq_type = { - .typename = "M32700UT-PLD-LCD-IRQ", + .name = "M32700UT-PLD-LCD-IRQ", .startup = startup_m32700ut_lcdpld_irq, .shutdown = shutdown_m32700ut_lcdpld_irq, .enable = enable_m32700ut_lcdpld_irq, diff --git a/arch/m32r/platforms/mappi/setup.c b/arch/m32r/platforms/mappi/setup.c index fb4b17799b66..ea00c84d6b1b 100644 --- a/arch/m32r/platforms/mappi/setup.c +++ b/arch/m32r/platforms/mappi/setup.c @@ -65,7 +65,7 @@ static void shutdown_mappi_irq(unsigned int irq) static struct irq_chip mappi_irq_type = { - .typename = "MAPPI-IRQ", + .name = "MAPPI-IRQ", .startup = startup_mappi_irq, .shutdown = shutdown_mappi_irq, .enable = enable_mappi_irq, diff --git a/arch/m32r/platforms/mappi2/setup.c b/arch/m32r/platforms/mappi2/setup.c index 6a65eda0a056..c049376d0270 100644 --- a/arch/m32r/platforms/mappi2/setup.c +++ b/arch/m32r/platforms/mappi2/setup.c @@ -72,7 +72,7 @@ static void shutdown_mappi2_irq(unsigned int irq) static struct irq_chip mappi2_irq_type = { - .typename = "MAPPI2-IRQ", + .name = "MAPPI2-IRQ", .startup = startup_mappi2_irq, .shutdown = shutdown_mappi2_irq, .enable = enable_mappi2_irq, diff --git a/arch/m32r/platforms/mappi3/setup.c b/arch/m32r/platforms/mappi3/setup.c index 9c337aeac94b..882de25c6e8c 100644 --- a/arch/m32r/platforms/mappi3/setup.c +++ b/arch/m32r/platforms/mappi3/setup.c @@ -72,7 +72,7 @@ static void shutdown_mappi3_irq(unsigned int irq) static struct irq_chip mappi3_irq_type = { - .typename = "MAPPI3-IRQ", + .name = "MAPPI3-IRQ", .startup = startup_mappi3_irq, .shutdown = shutdown_mappi3_irq, .enable = enable_mappi3_irq, diff --git a/arch/m32r/platforms/oaks32r/setup.c b/arch/m32r/platforms/oaks32r/setup.c index ed865741c38d..d11d93bf74f5 100644 --- a/arch/m32r/platforms/oaks32r/setup.c +++ b/arch/m32r/platforms/oaks32r/setup.c @@ -63,7 +63,7 @@ static void shutdown_oaks32r_irq(unsigned int irq) static struct irq_chip oaks32r_irq_type = { - .typename = "OAKS32R-IRQ", + .name = "OAKS32R-IRQ", .startup = startup_oaks32r_irq, .shutdown = shutdown_oaks32r_irq, .enable = enable_oaks32r_irq, diff --git a/arch/m32r/platforms/opsput/setup.c b/arch/m32r/platforms/opsput/setup.c index 80d680657019..5f3402a2fbaf 100644 --- a/arch/m32r/platforms/opsput/setup.c +++ b/arch/m32r/platforms/opsput/setup.c @@ -72,7 +72,7 @@ static void shutdown_opsput_irq(unsigned int irq) static struct irq_chip opsput_irq_type = { - .typename = "OPSPUT-IRQ", + .name = "OPSPUT-IRQ", .startup = startup_opsput_irq, .shutdown = shutdown_opsput_irq, .enable = enable_opsput_irq, @@ -149,7 +149,7 @@ static void shutdown_opsput_pld_irq(unsigned int irq) static struct irq_chip opsput_pld_irq_type = { - .typename = "OPSPUT-PLD-IRQ", + .name = "OPSPUT-PLD-IRQ", .startup = startup_opsput_pld_irq, .shutdown = shutdown_opsput_pld_irq, .enable = enable_opsput_pld_irq, @@ -218,7 +218,7 @@ static void shutdown_opsput_lanpld_irq(unsigned int irq) static struct irq_chip opsput_lanpld_irq_type = { - .typename = "OPSPUT-PLD-LAN-IRQ", + .name = "OPSPUT-PLD-LAN-IRQ", .startup = startup_opsput_lanpld_irq, .shutdown = shutdown_opsput_lanpld_irq, .enable = enable_opsput_lanpld_irq, diff --git a/arch/m32r/platforms/usrv/setup.c b/arch/m32r/platforms/usrv/setup.c index 757302660af8..1beac7a51ed4 100644 --- a/arch/m32r/platforms/usrv/setup.c +++ b/arch/m32r/platforms/usrv/setup.c @@ -63,7 +63,7 @@ static void shutdown_mappi_irq(unsigned int irq) static struct irq_chip mappi_irq_type = { - .typename = "M32700-IRQ", + .name = "M32700-IRQ", .startup = startup_mappi_irq, .shutdown = shutdown_mappi_irq, .enable = enable_mappi_irq, @@ -136,7 +136,7 @@ static void shutdown_m32700ut_pld_irq(unsigned int irq) static struct irq_chip m32700ut_pld_irq_type = { - .typename = "USRV-PLD-IRQ", + .name = "USRV-PLD-IRQ", .startup = startup_m32700ut_pld_irq, .shutdown = shutdown_m32700ut_pld_irq, .enable = enable_m32700ut_pld_irq, diff --git a/arch/m68k/include/asm/entry_no.h b/arch/m68k/include/asm/entry_no.h index 907ed03d792f..80e41492aa2a 100644 --- a/arch/m68k/include/asm/entry_no.h +++ b/arch/m68k/include/asm/entry_no.h @@ -28,7 +28,7 @@ * M68K COLDFIRE */ -#define ALLOWINT 0xf8ff +#define ALLOWINT (~0x700) #ifdef __ASSEMBLY__ diff --git a/arch/m68k/include/asm/irqflags.h b/arch/m68k/include/asm/irqflags.h new file mode 100644 index 000000000000..4a5b284a1550 --- /dev/null +++ b/arch/m68k/include/asm/irqflags.h @@ -0,0 +1,76 @@ +#ifndef _M68K_IRQFLAGS_H +#define _M68K_IRQFLAGS_H + +#include <linux/types.h> +#include <linux/hardirq.h> +#include <linux/preempt.h> +#include <asm/thread_info.h> +#include <asm/entry.h> + +static inline unsigned long arch_local_save_flags(void) +{ + unsigned long flags; + asm volatile ("movew %%sr,%0" : "=d" (flags) : : "memory"); + return flags; +} + +static inline void arch_local_irq_disable(void) +{ +#ifdef CONFIG_COLDFIRE + asm volatile ( + "move %/sr,%%d0 \n\t" + "ori.l #0x0700,%%d0 \n\t" + "move %%d0,%/sr \n" + : /* no outputs */ + : + : "cc", "%d0", "memory"); +#else + asm volatile ("oriw #0x0700,%%sr" : : : "memory"); +#endif +} + +static inline void arch_local_irq_enable(void) +{ +#if defined(CONFIG_COLDFIRE) + asm volatile ( + "move %/sr,%%d0 \n\t" + "andi.l #0xf8ff,%%d0 \n\t" + "move %%d0,%/sr \n" + : /* no outputs */ + : + : "cc", "%d0", "memory"); +#else +# if defined(CONFIG_MMU) + if (MACH_IS_Q40 || !hardirq_count()) +# endif + asm volatile ( + "andiw %0,%%sr" + : + : "i" (ALLOWINT) + : "memory"); +#endif +} + +static inline unsigned long arch_local_irq_save(void) +{ + unsigned long flags = arch_local_save_flags(); + arch_local_irq_disable(); + return flags; +} + +static inline void arch_local_irq_restore(unsigned long flags) +{ + asm volatile ("movew %0,%%sr" : : "d" (flags) : "memory"); +} + +static inline bool arch_irqs_disabled_flags(unsigned long flags) +{ + return (flags & ~ALLOWINT) != 0; +} + +static inline bool arch_irqs_disabled(void) +{ + return arch_irqs_disabled_flags(arch_local_save_flags()); +} + +#endif /* _M68K_IRQFLAGS_H */ diff --git a/arch/m68k/include/asm/system_mm.h b/arch/m68k/include/asm/system_mm.h index dbb6515ffd5b..12053c44cccf 100644 --- a/arch/m68k/include/asm/system_mm.h +++ b/arch/m68k/include/asm/system_mm.h @@ -3,6 +3,7 @@ #include <linux/linkage.h> #include <linux/kernel.h> +#include <linux/irqflags.h> #include <asm/segment.h> #include <asm/entry.h> @@ -62,30 +63,6 @@ asmlinkage void resume(void); #define smp_wmb() barrier() #define smp_read_barrier_depends() ((void)0) -/* interrupt control.. */ -#if 0 -#define local_irq_enable() asm volatile ("andiw %0,%%sr": : "i" (ALLOWINT) : "memory") -#else -#include <linux/hardirq.h> -#define local_irq_enable() ({ \ - if (MACH_IS_Q40 || !hardirq_count()) \ - asm volatile ("andiw %0,%%sr": : "i" (ALLOWINT) : "memory"); \ -}) -#endif -#define local_irq_disable() asm volatile ("oriw #0x0700,%%sr": : : "memory") -#define local_save_flags(x) asm volatile ("movew %%sr,%0":"=d" (x) : : "memory") -#define local_irq_restore(x) asm volatile ("movew %0,%%sr": :"d" (x) : "memory") - -static inline int irqs_disabled(void) -{ - unsigned long flags; - local_save_flags(flags); - return flags & ~ALLOWINT; -} - -/* For spinlocks etc */ -#define local_irq_save(x) ({ local_save_flags(x); local_irq_disable(); }) - #define xchg(ptr,x) ((__typeof__(*(ptr)))__xchg((unsigned long)(x),(ptr),sizeof(*(ptr)))) struct __xchg_dummy { unsigned long a[100]; }; diff --git a/arch/m68k/include/asm/system_no.h b/arch/m68k/include/asm/system_no.h index 3c0718d74398..20126c09794e 100644 --- a/arch/m68k/include/asm/system_no.h +++ b/arch/m68k/include/asm/system_no.h @@ -2,6 +2,7 @@ #define _M68KNOMMU_SYSTEM_H #include <linux/linkage.h> +#include <linux/irqflags.h> #include <asm/segment.h> #include <asm/entry.h> @@ -46,54 +47,6 @@ asmlinkage void resume(void); (last) = _last; \ } -#ifdef CONFIG_COLDFIRE -#define local_irq_enable() __asm__ __volatile__ ( \ - "move %/sr,%%d0\n\t" \ - "andi.l #0xf8ff,%%d0\n\t" \ - "move %%d0,%/sr\n" \ - : /* no outputs */ \ - : \ - : "cc", "%d0", "memory") -#define local_irq_disable() __asm__ __volatile__ ( \ - "move %/sr,%%d0\n\t" \ - "ori.l #0x0700,%%d0\n\t" \ - "move %%d0,%/sr\n" \ - : /* no outputs */ \ - : \ - : "cc", "%d0", "memory") -/* For spinlocks etc */ -#define local_irq_save(x) __asm__ __volatile__ ( \ - "movew %%sr,%0\n\t" \ - "movew #0x0700,%%d0\n\t" \ - "or.l %0,%%d0\n\t" \ - "movew %%d0,%/sr" \ - : "=d" (x) \ - : \ - : "cc", "%d0", "memory") -#else - -/* portable version */ /* FIXME - see entry.h*/ -#define ALLOWINT 0xf8ff - -#define local_irq_enable() asm volatile ("andiw %0,%%sr": : "i" (ALLOWINT) : "memory") -#define local_irq_disable() asm volatile ("oriw #0x0700,%%sr": : : "memory") -#endif - -#define local_save_flags(x) asm volatile ("movew %%sr,%0":"=d" (x) : : "memory") -#define local_irq_restore(x) asm volatile ("movew %0,%%sr": :"d" (x) : "memory") - -/* For spinlocks etc */ -#ifndef local_irq_save -#define local_irq_save(x) do { local_save_flags(x); local_irq_disable(); } while (0) -#endif - -#define irqs_disabled() \ -({ \ - unsigned long flags; \ - local_save_flags(flags); \ - ((flags & 0x0700) == 0x0700); \ -}) - #define iret() __asm__ __volatile__ ("rte": : :"memory", "sp", "cc") /* @@ -206,12 +159,4 @@ static inline unsigned long __xchg(unsigned long x, volatile void * ptr, int siz #define arch_align_stack(x) (x) -static inline int irqs_disabled_flags(unsigned long flags) -{ - if (flags & 0x0700) - return 0; - else - return 1; -} - #endif /* _M68KNOMMU_SYSTEM_H */ diff --git a/arch/m68knommu/kernel/asm-offsets.c b/arch/m68knommu/kernel/asm-offsets.c index 9a8876f715d8..24335022fa2c 100644 --- a/arch/m68knommu/kernel/asm-offsets.c +++ b/arch/m68knommu/kernel/asm-offsets.c @@ -74,8 +74,6 @@ int main(void) DEFINE(PT_PTRACED, PT_PTRACED); - DEFINE(THREAD_SIZE, THREAD_SIZE); - /* Offsets in thread_info structure */ DEFINE(TI_TASK, offsetof(struct thread_info, task)); DEFINE(TI_EXECDOMAIN, offsetof(struct thread_info, exec_domain)); diff --git a/arch/m68knommu/platform/coldfire/head.S b/arch/m68knommu/platform/coldfire/head.S index 4b91aa24eb00..0b2d7c7adf79 100644 --- a/arch/m68knommu/platform/coldfire/head.S +++ b/arch/m68knommu/platform/coldfire/head.S @@ -15,6 +15,7 @@ #include <asm/coldfire.h> #include <asm/mcfcache.h> #include <asm/mcfsim.h> +#include <asm/thread_info.h> /*****************************************************************************/ diff --git a/arch/microblaze/include/asm/irqflags.h b/arch/microblaze/include/asm/irqflags.h index 2c38c6d80176..5fd31905775d 100644 --- a/arch/microblaze/include/asm/irqflags.h +++ b/arch/microblaze/include/asm/irqflags.h @@ -9,103 +9,114 @@ #ifndef _ASM_MICROBLAZE_IRQFLAGS_H #define _ASM_MICROBLAZE_IRQFLAGS_H -#include <linux/irqflags.h> +#include <linux/types.h> #include <asm/registers.h> -# if CONFIG_XILINX_MICROBLAZE0_USE_MSR_INSTR - -# define raw_local_irq_save(flags) \ - do { \ - asm volatile (" msrclr %0, %1; \ - nop;" \ - : "=r"(flags) \ - : "i"(MSR_IE) \ - : "memory"); \ - } while (0) - -# define raw_local_irq_disable() \ - do { \ - asm volatile (" msrclr r0, %0; \ - nop;" \ - : \ - : "i"(MSR_IE) \ - : "memory"); \ - } while (0) - -# define raw_local_irq_enable() \ - do { \ - asm volatile (" msrset r0, %0; \ - nop;" \ - : \ - : "i"(MSR_IE) \ - : "memory"); \ - } while (0) - -# else /* CONFIG_XILINX_MICROBLAZE0_USE_MSR_INSTR == 0 */ - -# define raw_local_irq_save(flags) \ - do { \ - register unsigned tmp; \ - asm volatile (" mfs %0, rmsr; \ - nop; \ - andi %1, %0, %2; \ - mts rmsr, %1; \ - nop;" \ - : "=r"(flags), "=r" (tmp) \ - : "i"(~MSR_IE) \ - : "memory"); \ - } while (0) - -# define raw_local_irq_disable() \ - do { \ - register unsigned tmp; \ - asm volatile (" mfs %0, rmsr; \ - nop; \ - andi %0, %0, %1; \ - mts rmsr, %0; \ - nop;" \ - : "=r"(tmp) \ - : "i"(~MSR_IE) \ - : "memory"); \ - } while (0) - -# define raw_local_irq_enable() \ - do { \ - register unsigned tmp; \ - asm volatile (" mfs %0, rmsr; \ - nop; \ - ori %0, %0, %1; \ - mts rmsr, %0; \ - nop;" \ - : "=r"(tmp) \ - : "i"(MSR_IE) \ - : "memory"); \ - } while (0) - -# endif /* CONFIG_XILINX_MICROBLAZE0_USE_MSR_INSTR */ - -#define raw_local_irq_restore(flags) \ - do { \ - asm volatile (" mts rmsr, %0; \ - nop;" \ - : \ - : "r"(flags) \ - : "memory"); \ - } while (0) - -static inline unsigned long get_msr(void) +#ifdef CONFIG_XILINX_MICROBLAZE0_USE_MSR_INSTR + +static inline unsigned long arch_local_irq_save(void) +{ + unsigned long flags; + asm volatile(" msrclr %0, %1 \n" + " nop \n" + : "=r"(flags) + : "i"(MSR_IE) + : "memory"); + return flags; +} + +static inline void arch_local_irq_disable(void) +{ + /* this uses r0 without declaring it - is that correct? */ + asm volatile(" msrclr r0, %0 \n" + " nop \n" + : + : "i"(MSR_IE) + : "memory"); +} + +static inline void arch_local_irq_enable(void) +{ + /* this uses r0 without declaring it - is that correct? */ + asm volatile(" msrset r0, %0 \n" + " nop \n" + : + : "i"(MSR_IE) + : "memory"); +} + +#else /* !CONFIG_XILINX_MICROBLAZE0_USE_MSR_INSTR */ + +static inline unsigned long arch_local_irq_save(void) +{ + unsigned long flags, tmp; + asm volatile (" mfs %0, rmsr \n" + " nop \n" + " andi %1, %0, %2 \n" + " mts rmsr, %1 \n" + " nop \n" + : "=r"(flags), "=r"(tmp) + : "i"(~MSR_IE) + : "memory"); + return flags; +} + +static inline void arch_local_irq_disable(void) +{ + unsigned long tmp; + asm volatile(" mfs %0, rmsr \n" + " nop \n" + " andi %0, %0, %1 \n" + " mts rmsr, %0 \n" + " nop \n" + : "=r"(tmp) + : "i"(~MSR_IE) + : "memory"); +} + +static inline void arch_local_irq_enable(void) +{ + unsigned long tmp; + asm volatile(" mfs %0, rmsr \n" + " nop \n" + " ori %0, %0, %1 \n" + " mts rmsr, %0 \n" + " nop \n" + : "=r"(tmp) + : "i"(MSR_IE) + : "memory"); +} + +#endif /* CONFIG_XILINX_MICROBLAZE0_USE_MSR_INSTR */ + +static inline unsigned long arch_local_save_flags(void) { unsigned long flags; - asm volatile (" mfs %0, rmsr; \ - nop;" \ - : "=r"(flags) \ - : \ - : "memory"); \ + asm volatile(" mfs %0, rmsr \n" + " nop \n" + : "=r"(flags) + : + : "memory"); return flags; } -#define raw_local_save_flags(flags) ((flags) = get_msr()) -#define raw_irqs_disabled() ((get_msr() & MSR_IE) == 0) -#define raw_irqs_disabled_flags(flags) ((flags & MSR_IE) == 0) +static inline void arch_local_irq_restore(unsigned long flags) +{ + asm volatile(" mts rmsr, %0 \n" + " nop \n" + : + : "r"(flags) + : "memory"); +} + +static inline bool arch_irqs_disabled_flags(unsigned long flags) +{ + return (flags & MSR_IE) == 0; +} + +static inline bool arch_irqs_disabled(void) +{ + return arch_irqs_disabled_flags(arch_local_save_flags()); +} #endif /* _ASM_MICROBLAZE_IRQFLAGS_H */ diff --git a/arch/mips/Kbuild b/arch/mips/Kbuild index e322d65f33a4..7dd65cfae837 100644 --- a/arch/mips/Kbuild +++ b/arch/mips/Kbuild @@ -7,6 +7,10 @@ subdir-ccflags-y := -Werror include arch/mips/Kbuild.platforms obj-y := $(platform-y) +# make clean traverses $(obj-) without having included .config, so +# everything ends up here +obj- := $(platform-) + # mips object files # The object files are linked as core-y files would be linked diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig index 5526faabfc21..4c9f402295dd 100644 --- a/arch/mips/Kconfig +++ b/arch/mips/Kconfig @@ -881,11 +881,15 @@ config NO_IOPORT config GENERIC_ISA_DMA bool select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n + select ISA_DMA_API config GENERIC_ISA_DMA_SUPPORT_BROKEN bool select GENERIC_ISA_DMA +config ISA_DMA_API + bool + config GENERIC_GPIO bool diff --git a/arch/mips/alchemy/devboards/bcsr.c b/arch/mips/alchemy/devboards/bcsr.c index 3bc4fd2155d7..c52af8821da0 100644 --- a/arch/mips/alchemy/devboards/bcsr.c +++ b/arch/mips/alchemy/devboards/bcsr.c @@ -10,6 +10,7 @@ #include <linux/interrupt.h> #include <linux/module.h> #include <linux/spinlock.h> +#include <linux/irq.h> #include <asm/addrspace.h> #include <asm/io.h> #include <asm/mach-db1x00/bcsr.h> diff --git a/arch/mips/ar7/irq.c b/arch/mips/ar7/irq.c index c781556c44e4..4ec2642c568f 100644 --- a/arch/mips/ar7/irq.c +++ b/arch/mips/ar7/irq.c @@ -19,6 +19,7 @@ #include <linux/interrupt.h> #include <linux/io.h> +#include <linux/irq.h> #include <asm/irq_cpu.h> #include <asm/mipsregs.h> diff --git a/arch/mips/bcm63xx/irq.c b/arch/mips/bcm63xx/irq.c index a0c5cd18c192..3be87f2422f0 100644 --- a/arch/mips/bcm63xx/irq.c +++ b/arch/mips/bcm63xx/irq.c @@ -11,6 +11,7 @@ #include <linux/init.h> #include <linux/interrupt.h> #include <linux/module.h> +#include <linux/irq.h> #include <asm/irq_cpu.h> #include <asm/mipsregs.h> #include <bcm63xx_cpu.h> diff --git a/arch/mips/boot/compressed/Makefile b/arch/mips/boot/compressed/Makefile index 5fd7f7a58b7e..5042d51b0512 100644 --- a/arch/mips/boot/compressed/Makefile +++ b/arch/mips/boot/compressed/Makefile @@ -105,4 +105,4 @@ OBJCOPYFLAGS_vmlinuz.srec := $(OBJCOPYFLAGS) -S -O srec vmlinuz.srec: vmlinuz $(call cmd,objcopy) -clean-files := $(objtree)/vmlinuz.* +clean-files := $(objtree)/vmlinuz $(objtree)/vmlinuz.{32,ecoff,bin,srec} diff --git a/arch/mips/cavium-octeon/serial.c b/arch/mips/cavium-octeon/serial.c index 638adab02842..12dbf533b77d 100644 --- a/arch/mips/cavium-octeon/serial.c +++ b/arch/mips/cavium-octeon/serial.c @@ -13,6 +13,7 @@ #include <linux/serial_8250.h> #include <linux/serial_reg.h> #include <linux/tty.h> +#include <linux/irq.h> #include <asm/time.h> diff --git a/arch/mips/dec/Platform b/arch/mips/dec/Platform index 3adbcbd95db1..cf55a6f4e720 100644 --- a/arch/mips/dec/Platform +++ b/arch/mips/dec/Platform @@ -1,7 +1,7 @@ # # DECstation family # -platform-$(CONFIG_MACH_DECSTATION) = dec/ +platform-$(CONFIG_MACH_DECSTATION) += dec/ cflags-$(CONFIG_MACH_DECSTATION) += \ -I$(srctree)/arch/mips/include/asm/mach-dec libs-$(CONFIG_MACH_DECSTATION) += arch/mips/dec/prom/ diff --git a/arch/mips/dec/setup.c b/arch/mips/dec/setup.c index bd5431e1f408..fa45e924be05 100644 --- a/arch/mips/dec/setup.c +++ b/arch/mips/dec/setup.c @@ -18,6 +18,7 @@ #include <linux/spinlock.h> #include <linux/types.h> #include <linux/pm.h> +#include <linux/irq.h> #include <asm/bootinfo.h> #include <asm/cpu.h> diff --git a/arch/mips/include/asm/fcntl.h b/arch/mips/include/asm/fcntl.h index e482fe90fe88..75eddedcfc3e 100644 --- a/arch/mips/include/asm/fcntl.h +++ b/arch/mips/include/asm/fcntl.h @@ -56,6 +56,7 @@ */ #ifdef CONFIG_32BIT +#include <linux/types.h> struct flock { short l_type; diff --git a/arch/mips/include/asm/irqflags.h b/arch/mips/include/asm/irqflags.h index 701ec0ba8fa9..9ef3b0d17896 100644 --- a/arch/mips/include/asm/irqflags.h +++ b/arch/mips/include/asm/irqflags.h @@ -17,7 +17,7 @@ #include <asm/hazards.h> __asm__( - " .macro raw_local_irq_enable \n" + " .macro arch_local_irq_enable \n" " .set push \n" " .set reorder \n" " .set noat \n" @@ -40,7 +40,7 @@ __asm__( extern void smtc_ipi_replay(void); -static inline void raw_local_irq_enable(void) +static inline void arch_local_irq_enable(void) { #ifdef CONFIG_MIPS_MT_SMTC /* @@ -50,7 +50,7 @@ static inline void raw_local_irq_enable(void) smtc_ipi_replay(); #endif __asm__ __volatile__( - "raw_local_irq_enable" + "arch_local_irq_enable" : /* no outputs */ : /* no inputs */ : "memory"); @@ -76,7 +76,7 @@ static inline void raw_local_irq_enable(void) * Workaround: mask EXL bit of the result or place a nop before mfc0. */ __asm__( - " .macro raw_local_irq_disable\n" + " .macro arch_local_irq_disable\n" " .set push \n" " .set noat \n" #ifdef CONFIG_MIPS_MT_SMTC @@ -97,17 +97,17 @@ __asm__( " .set pop \n" " .endm \n"); -static inline void raw_local_irq_disable(void) +static inline void arch_local_irq_disable(void) { __asm__ __volatile__( - "raw_local_irq_disable" + "arch_local_irq_disable" : /* no outputs */ : /* no inputs */ : "memory"); } __asm__( - " .macro raw_local_save_flags flags \n" + " .macro arch_local_save_flags flags \n" " .set push \n" " .set reorder \n" #ifdef CONFIG_MIPS_MT_SMTC @@ -118,13 +118,15 @@ __asm__( " .set pop \n" " .endm \n"); -#define raw_local_save_flags(x) \ -__asm__ __volatile__( \ - "raw_local_save_flags %0" \ - : "=r" (x)) +static inline unsigned long arch_local_save_flags(void) +{ + unsigned long flags; + asm volatile("arch_local_save_flags %0" : "=r" (flags)); + return flags; +} __asm__( - " .macro raw_local_irq_save result \n" + " .macro arch_local_irq_save result \n" " .set push \n" " .set reorder \n" " .set noat \n" @@ -148,15 +150,18 @@ __asm__( " .set pop \n" " .endm \n"); -#define raw_local_irq_save(x) \ -__asm__ __volatile__( \ - "raw_local_irq_save\t%0" \ - : "=r" (x) \ - : /* no inputs */ \ - : "memory") +static inline unsigned long arch_local_irq_save(void) +{ + unsigned long flags; + asm volatile("arch_local_irq_save\t%0" + : "=r" (flags) + : /* no inputs */ + : "memory"); + return flags; +} __asm__( - " .macro raw_local_irq_restore flags \n" + " .macro arch_local_irq_restore flags \n" " .set push \n" " .set noreorder \n" " .set noat \n" @@ -196,7 +201,7 @@ __asm__( " .endm \n"); -static inline void raw_local_irq_restore(unsigned long flags) +static inline void arch_local_irq_restore(unsigned long flags) { unsigned long __tmp1; @@ -211,24 +216,24 @@ static inline void raw_local_irq_restore(unsigned long flags) #endif __asm__ __volatile__( - "raw_local_irq_restore\t%0" + "arch_local_irq_restore\t%0" : "=r" (__tmp1) : "0" (flags) : "memory"); } -static inline void __raw_local_irq_restore(unsigned long flags) +static inline void __arch_local_irq_restore(unsigned long flags) { unsigned long __tmp1; __asm__ __volatile__( - "raw_local_irq_restore\t%0" + "arch_local_irq_restore\t%0" : "=r" (__tmp1) : "0" (flags) : "memory"); } -static inline int raw_irqs_disabled_flags(unsigned long flags) +static inline int arch_irqs_disabled_flags(unsigned long flags) { #ifdef CONFIG_MIPS_MT_SMTC /* diff --git a/arch/mips/include/asm/mach-loongson/loongson.h b/arch/mips/include/asm/mach-loongson/loongson.h index cb6985f24303..1e29b9dd1d73 100644 --- a/arch/mips/include/asm/mach-loongson/loongson.h +++ b/arch/mips/include/asm/mach-loongson/loongson.h @@ -13,6 +13,7 @@ #include <linux/io.h> #include <linux/init.h> +#include <linux/irq.h> /* loongson internal northbridge initialization */ extern void bonito_irq_init(void); diff --git a/arch/mips/jazz/irq.c b/arch/mips/jazz/irq.c index ee18028efe92..35b3e2f0af04 100644 --- a/arch/mips/jazz/irq.c +++ b/arch/mips/jazz/irq.c @@ -12,6 +12,7 @@ #include <linux/kernel.h> #include <linux/smp.h> #include <linux/spinlock.h> +#include <linux/irq.h> #include <asm/irq_cpu.h> #include <asm/i8253.h> diff --git a/arch/mips/jz4740/Platform b/arch/mips/jz4740/Platform index 6a97230e3d05..ba91be9c21ef 100644 --- a/arch/mips/jz4740/Platform +++ b/arch/mips/jz4740/Platform @@ -1,3 +1,3 @@ -core-$(CONFIG_MACH_JZ4740) += arch/mips/jz4740/ +platform-$(CONFIG_MACH_JZ4740) += jz4740/ cflags-$(CONFIG_MACH_JZ4740) += -I$(srctree)/arch/mips/include/asm/mach-jz4740 load-$(CONFIG_MACH_JZ4740) += 0xffffffff80010000 diff --git a/arch/mips/kernel/branch.c b/arch/mips/kernel/branch.c index 0176ed015c89..32103cc2a257 100644 --- a/arch/mips/kernel/branch.c +++ b/arch/mips/kernel/branch.c @@ -40,7 +40,6 @@ int __compute_return_epc(struct pt_regs *regs) return -EFAULT; } - regs->regs[0] = 0; switch (insn.i_format.opcode) { /* * jr and jalr are in r_format format. diff --git a/arch/mips/kernel/cevt-bcm1480.c b/arch/mips/kernel/cevt-bcm1480.c index bfea327c636c..36c3898b76db 100644 --- a/arch/mips/kernel/cevt-bcm1480.c +++ b/arch/mips/kernel/cevt-bcm1480.c @@ -19,6 +19,7 @@ #include <linux/interrupt.h> #include <linux/percpu.h> #include <linux/smp.h> +#include <linux/irq.h> #include <asm/addrspace.h> #include <asm/io.h> diff --git a/arch/mips/kernel/cevt-ds1287.c b/arch/mips/kernel/cevt-ds1287.c index 00a4da277cbb..939157e397b9 100644 --- a/arch/mips/kernel/cevt-ds1287.c +++ b/arch/mips/kernel/cevt-ds1287.c @@ -21,6 +21,7 @@ #include <linux/init.h> #include <linux/interrupt.h> #include <linux/mc146818rtc.h> +#include <linux/irq.h> #include <asm/time.h> diff --git a/arch/mips/kernel/cevt-gt641xx.c b/arch/mips/kernel/cevt-gt641xx.c index 392ef3756c56..339f3639b90e 100644 --- a/arch/mips/kernel/cevt-gt641xx.c +++ b/arch/mips/kernel/cevt-gt641xx.c @@ -21,6 +21,7 @@ #include <linux/init.h> #include <linux/interrupt.h> #include <linux/spinlock.h> +#include <linux/irq.h> #include <asm/gt64120.h> #include <asm/time.h> diff --git a/arch/mips/kernel/cevt-r4k.c b/arch/mips/kernel/cevt-r4k.c index 2a4d50ff5e2c..2f4d7a99bcc2 100644 --- a/arch/mips/kernel/cevt-r4k.c +++ b/arch/mips/kernel/cevt-r4k.c @@ -10,6 +10,7 @@ #include <linux/interrupt.h> #include <linux/percpu.h> #include <linux/smp.h> +#include <linux/irq.h> #include <asm/smtc_ipi.h> #include <asm/time.h> diff --git a/arch/mips/kernel/cevt-sb1250.c b/arch/mips/kernel/cevt-sb1250.c index da78eeaea6e8..590c54f28a81 100644 --- a/arch/mips/kernel/cevt-sb1250.c +++ b/arch/mips/kernel/cevt-sb1250.c @@ -17,6 +17,7 @@ */ #include <linux/clockchips.h> #include <linux/interrupt.h> +#include <linux/irq.h> #include <linux/percpu.h> #include <linux/smp.h> diff --git a/arch/mips/kernel/cevt-smtc.c b/arch/mips/kernel/cevt-smtc.c index b102e4f1630e..2e72d30b2f05 100644 --- a/arch/mips/kernel/cevt-smtc.c +++ b/arch/mips/kernel/cevt-smtc.c @@ -11,6 +11,7 @@ #include <linux/interrupt.h> #include <linux/percpu.h> #include <linux/smp.h> +#include <linux/irq.h> #include <asm/smtc_ipi.h> #include <asm/time.h> diff --git a/arch/mips/kernel/cevt-txx9.c b/arch/mips/kernel/cevt-txx9.c index 218ee6bda935..0b7377361e22 100644 --- a/arch/mips/kernel/cevt-txx9.c +++ b/arch/mips/kernel/cevt-txx9.c @@ -13,6 +13,7 @@ */ #include <linux/init.h> #include <linux/interrupt.h> +#include <linux/irq.h> #include <asm/time.h> #include <asm/txx9tmr.h> diff --git a/arch/mips/kernel/i8253.c b/arch/mips/kernel/i8253.c index 94794062a177..2392a7a296d4 100644 --- a/arch/mips/kernel/i8253.c +++ b/arch/mips/kernel/i8253.c @@ -9,6 +9,7 @@ #include <linux/module.h> #include <linux/smp.h> #include <linux/spinlock.h> +#include <linux/irq.h> #include <asm/delay.h> #include <asm/i8253.h> diff --git a/arch/mips/kernel/i8259.c b/arch/mips/kernel/i8259.c index 27799113332c..c58176cc796b 100644 --- a/arch/mips/kernel/i8259.c +++ b/arch/mips/kernel/i8259.c @@ -15,6 +15,7 @@ #include <linux/kernel.h> #include <linux/spinlock.h> #include <linux/sysdev.h> +#include <linux/irq.h> #include <asm/i8259.h> #include <asm/io.h> diff --git a/arch/mips/kernel/irq-gic.c b/arch/mips/kernel/irq-gic.c index 82ba9f62f49e..1774271af848 100644 --- a/arch/mips/kernel/irq-gic.c +++ b/arch/mips/kernel/irq-gic.c @@ -3,11 +3,11 @@ #include <linux/bitmap.h> #include <linux/init.h> #include <linux/smp.h> +#include <linux/irq.h> #include <asm/io.h> #include <asm/gic.h> #include <asm/gcmpregs.h> -#include <asm/irq.h> #include <linux/hardirq.h> #include <asm-generic/bitops/find.h> diff --git a/arch/mips/kernel/irq-rm7000.c b/arch/mips/kernel/irq-rm7000.c index fb50cc78b28b..9731e8b47862 100644 --- a/arch/mips/kernel/irq-rm7000.c +++ b/arch/mips/kernel/irq-rm7000.c @@ -11,6 +11,7 @@ */ #include <linux/init.h> #include <linux/interrupt.h> +#include <linux/irq.h> #include <linux/kernel.h> #include <asm/irq_cpu.h> diff --git a/arch/mips/kernel/irq-rm9000.c b/arch/mips/kernel/irq-rm9000.c index b47e4615ec12..b7e4025b58a8 100644 --- a/arch/mips/kernel/irq-rm9000.c +++ b/arch/mips/kernel/irq-rm9000.c @@ -11,6 +11,7 @@ */ #include <linux/init.h> #include <linux/interrupt.h> +#include <linux/irq.h> #include <linux/kernel.h> #include <linux/module.h> diff --git a/arch/mips/kernel/irq_cpu.c b/arch/mips/kernel/irq_cpu.c index 55c8a3ca507b..0262abe09121 100644 --- a/arch/mips/kernel/irq_cpu.c +++ b/arch/mips/kernel/irq_cpu.c @@ -30,6 +30,7 @@ #include <linux/init.h> #include <linux/interrupt.h> #include <linux/kernel.h> +#include <linux/irq.h> #include <asm/irq_cpu.h> #include <asm/mipsregs.h> diff --git a/arch/mips/kernel/irq_txx9.c b/arch/mips/kernel/irq_txx9.c index 9b78029bea70..95a96f69172d 100644 --- a/arch/mips/kernel/irq_txx9.c +++ b/arch/mips/kernel/irq_txx9.c @@ -16,6 +16,7 @@ #include <linux/init.h> #include <linux/interrupt.h> #include <linux/types.h> +#include <linux/irq.h> #include <asm/txx9irq.h> struct txx9_irc_reg { diff --git a/arch/mips/kernel/mips-mt-fpaff.c b/arch/mips/kernel/mips-mt-fpaff.c index 2340f11dc29c..9a526ba6f257 100644 --- a/arch/mips/kernel/mips-mt-fpaff.c +++ b/arch/mips/kernel/mips-mt-fpaff.c @@ -103,7 +103,7 @@ asmlinkage long mipsmt_sys_sched_setaffinity(pid_t pid, unsigned int len, if (!check_same_owner(p) && !capable(CAP_SYS_NICE)) goto out_unlock; - retval = security_task_setscheduler(p, 0, NULL); + retval = security_task_setscheduler(p) if (retval) goto out_unlock; diff --git a/arch/mips/kernel/ptrace.c b/arch/mips/kernel/ptrace.c index c51b95ff8644..c8777333e198 100644 --- a/arch/mips/kernel/ptrace.c +++ b/arch/mips/kernel/ptrace.c @@ -536,7 +536,7 @@ asmlinkage void do_syscall_trace(struct pt_regs *regs, int entryexit) { /* do the secure computing check first */ if (!entryexit) - secure_computing(regs->regs[0]); + secure_computing(regs->regs[2]); if (unlikely(current->audit_context) && entryexit) audit_syscall_exit(AUDITSC_RESULT(regs->regs[2]), @@ -565,7 +565,7 @@ asmlinkage void do_syscall_trace(struct pt_regs *regs, int entryexit) out: if (unlikely(current->audit_context) && !entryexit) - audit_syscall_entry(audit_arch(), regs->regs[0], + audit_syscall_entry(audit_arch(), regs->regs[2], regs->regs[4], regs->regs[5], regs->regs[6], regs->regs[7]); } diff --git a/arch/mips/kernel/scall32-o32.S b/arch/mips/kernel/scall32-o32.S index 584415eef8c9..fbaabad0e6e2 100644 --- a/arch/mips/kernel/scall32-o32.S +++ b/arch/mips/kernel/scall32-o32.S @@ -63,9 +63,9 @@ stack_done: sw t0, PT_R7(sp) # set error flag beqz t0, 1f + lw t1, PT_R2(sp) # syscall number negu v0 # error - sw v0, PT_R0(sp) # set flag for syscall - # restarting + sw t1, PT_R0(sp) # save it for syscall restarting 1: sw v0, PT_R2(sp) # result o32_syscall_exit: @@ -104,9 +104,9 @@ syscall_trace_entry: sw t0, PT_R7(sp) # set error flag beqz t0, 1f + lw t1, PT_R2(sp) # syscall number negu v0 # error - sw v0, PT_R0(sp) # set flag for syscall - # restarting + sw t1, PT_R0(sp) # save it for syscall restarting 1: sw v0, PT_R2(sp) # result j syscall_exit @@ -169,8 +169,7 @@ stackargs: * We probably should handle this case a bit more drastic. */ bad_stack: - negu v0 # error - sw v0, PT_R0(sp) + li v0, EFAULT sw v0, PT_R2(sp) li t0, 1 # set error flag sw t0, PT_R7(sp) diff --git a/arch/mips/kernel/scall64-64.S b/arch/mips/kernel/scall64-64.S index 5573f8e4e326..3f4179283207 100644 --- a/arch/mips/kernel/scall64-64.S +++ b/arch/mips/kernel/scall64-64.S @@ -66,9 +66,9 @@ NESTED(handle_sys64, PT_SIZE, sp) sd t0, PT_R7(sp) # set error flag beqz t0, 1f + ld t1, PT_R2(sp) # syscall number dnegu v0 # error - sd v0, PT_R0(sp) # set flag for syscall - # restarting + sd t1, PT_R0(sp) # save it for syscall restarting 1: sd v0, PT_R2(sp) # result n64_syscall_exit: @@ -109,8 +109,9 @@ syscall_trace_entry: sd t0, PT_R7(sp) # set error flag beqz t0, 1f + ld t1, PT_R2(sp) # syscall number dnegu v0 # error - sd v0, PT_R0(sp) # set flag for syscall restarting + sd t1, PT_R0(sp) # save it for syscall restarting 1: sd v0, PT_R2(sp) # result j syscall_exit diff --git a/arch/mips/kernel/scall64-n32.S b/arch/mips/kernel/scall64-n32.S index 1e38ec97672e..f08ece6d8acc 100644 --- a/arch/mips/kernel/scall64-n32.S +++ b/arch/mips/kernel/scall64-n32.S @@ -65,8 +65,9 @@ NESTED(handle_sysn32, PT_SIZE, sp) sd t0, PT_R7(sp) # set error flag beqz t0, 1f + ld t1, PT_R2(sp) # syscall number dnegu v0 # error - sd v0, PT_R0(sp) # set flag for syscall restarting + sd t1, PT_R0(sp) # save it for syscall restarting 1: sd v0, PT_R2(sp) # result local_irq_disable # make sure need_resched and @@ -106,8 +107,9 @@ n32_syscall_trace_entry: sd t0, PT_R7(sp) # set error flag beqz t0, 1f + ld t1, PT_R2(sp) # syscall number dnegu v0 # error - sd v0, PT_R0(sp) # set flag for syscall restarting + sd t1, PT_R0(sp) # save it for syscall restarting 1: sd v0, PT_R2(sp) # result j syscall_exit @@ -320,10 +322,10 @@ EXPORT(sysn32_call_table) PTR sys_cacheflush PTR sys_cachectl PTR sys_sysmips - PTR sys_io_setup /* 6200 */ + PTR compat_sys_io_setup /* 6200 */ PTR sys_io_destroy - PTR sys_io_getevents - PTR sys_io_submit + PTR compat_sys_io_getevents + PTR compat_sys_io_submit PTR sys_io_cancel PTR sys_exit_group /* 6205 */ PTR sys_lookup_dcookie diff --git a/arch/mips/kernel/scall64-o32.S b/arch/mips/kernel/scall64-o32.S index 171979fc98e5..78d768a3e19d 100644 --- a/arch/mips/kernel/scall64-o32.S +++ b/arch/mips/kernel/scall64-o32.S @@ -93,8 +93,9 @@ NESTED(handle_sys, PT_SIZE, sp) sd t0, PT_R7(sp) # set error flag beqz t0, 1f + ld t1, PT_R2(sp) # syscall number dnegu v0 # error - sd v0, PT_R0(sp) # flag for syscall restarting + sd t1, PT_R0(sp) # save it for syscall restarting 1: sd v0, PT_R2(sp) # result o32_syscall_exit: @@ -142,8 +143,9 @@ trace_a_syscall: sd t0, PT_R7(sp) # set error flag beqz t0, 1f + ld t1, PT_R2(sp) # syscall number dnegu v0 # error - sd v0, PT_R0(sp) # set flag for syscall restarting + sd t1, PT_R0(sp) # save it for syscall restarting 1: sd v0, PT_R2(sp) # result j syscall_exit @@ -154,8 +156,7 @@ trace_a_syscall: * The stackpointer for a call with more than 4 arguments is bad. */ bad_stack: - dnegu v0 # error - sd v0, PT_R0(sp) + li v0, EFAULT sd v0, PT_R2(sp) li t0, 1 # set error flag sd t0, PT_R7(sp) @@ -444,10 +445,10 @@ sys_call_table: PTR compat_sys_futex PTR compat_sys_sched_setaffinity PTR compat_sys_sched_getaffinity /* 4240 */ - PTR sys_io_setup + PTR compat_sys_io_setup PTR sys_io_destroy - PTR sys_io_getevents - PTR sys_io_submit + PTR compat_sys_io_getevents + PTR compat_sys_io_submit PTR sys_io_cancel /* 4245 */ PTR sys_exit_group PTR sys32_lookup_dcookie diff --git a/arch/mips/kernel/signal.c b/arch/mips/kernel/signal.c index 2099d5a4c4b7..5922342bca39 100644 --- a/arch/mips/kernel/signal.c +++ b/arch/mips/kernel/signal.c @@ -390,7 +390,6 @@ asmlinkage void sys_rt_sigreturn(nabi_no_regargs struct pt_regs regs) { struct rt_sigframe __user *frame; sigset_t set; - stack_t st; int sig; frame = (struct rt_sigframe __user *) regs.regs[29]; @@ -411,11 +410,9 @@ asmlinkage void sys_rt_sigreturn(nabi_no_regargs struct pt_regs regs) else if (sig) force_sig(sig, current); - if (__copy_from_user(&st, &frame->rs_uc.uc_stack, sizeof(st))) - goto badframe; /* It is more difficult to avoid calling this function than to call it and ignore errors. */ - do_sigaltstack((stack_t __user *)&st, NULL, regs.regs[29]); + do_sigaltstack(&frame->rs_uc.uc_stack, NULL, regs.regs[29]); /* * Don't let your children do this ... @@ -550,23 +547,26 @@ static int handle_signal(unsigned long sig, siginfo_t *info, struct mips_abi *abi = current->thread.abi; void *vdso = current->mm->context.vdso; - switch(regs->regs[0]) { - case ERESTART_RESTARTBLOCK: - case ERESTARTNOHAND: - regs->regs[2] = EINTR; - break; - case ERESTARTSYS: - if (!(ka->sa.sa_flags & SA_RESTART)) { + if (regs->regs[0]) { + switch(regs->regs[2]) { + case ERESTART_RESTARTBLOCK: + case ERESTARTNOHAND: regs->regs[2] = EINTR; break; + case ERESTARTSYS: + if (!(ka->sa.sa_flags & SA_RESTART)) { + regs->regs[2] = EINTR; + break; + } + /* fallthrough */ + case ERESTARTNOINTR: + regs->regs[7] = regs->regs[26]; + regs->regs[2] = regs->regs[0]; + regs->cp0_epc -= 4; } - /* fallthrough */ - case ERESTARTNOINTR: /* Userland will reload $v0. */ - regs->regs[7] = regs->regs[26]; - regs->cp0_epc -= 8; - } - regs->regs[0] = 0; /* Don't deal with this again. */ + regs->regs[0] = 0; /* Don't deal with this again. */ + } if (sig_uses_siginfo(ka)) ret = abi->setup_rt_frame(vdso + abi->rt_signal_return_offset, @@ -575,6 +575,9 @@ static int handle_signal(unsigned long sig, siginfo_t *info, ret = abi->setup_frame(vdso + abi->signal_return_offset, ka, regs, sig, oldset); + if (ret) + return ret; + spin_lock_irq(¤t->sighand->siglock); sigorsets(¤t->blocked, ¤t->blocked, &ka->sa.sa_mask); if (!(ka->sa.sa_flags & SA_NODEFER)) @@ -622,17 +625,13 @@ static void do_signal(struct pt_regs *regs) return; } - /* - * Who's code doesn't conform to the restartable syscall convention - * dies here!!! The li instruction, a single machine instruction, - * must directly be followed by the syscall instruction. - */ if (regs->regs[0]) { if (regs->regs[2] == ERESTARTNOHAND || regs->regs[2] == ERESTARTSYS || regs->regs[2] == ERESTARTNOINTR) { + regs->regs[2] = regs->regs[0]; regs->regs[7] = regs->regs[26]; - regs->cp0_epc -= 8; + regs->cp0_epc -= 4; } if (regs->regs[2] == ERESTART_RESTARTBLOCK) { regs->regs[2] = current->thread.abi->restart; diff --git a/arch/mips/kernel/signal_n32.c b/arch/mips/kernel/signal_n32.c index 2c5df818c65a..ee24d814d5b9 100644 --- a/arch/mips/kernel/signal_n32.c +++ b/arch/mips/kernel/signal_n32.c @@ -109,6 +109,7 @@ asmlinkage int sysn32_rt_sigsuspend(nabi_no_regargs struct pt_regs regs) asmlinkage void sysn32_rt_sigreturn(nabi_no_regargs struct pt_regs regs) { struct rt_sigframe_n32 __user *frame; + mm_segment_t old_fs; sigset_t set; stack_t st; s32 sp; @@ -143,7 +144,11 @@ asmlinkage void sysn32_rt_sigreturn(nabi_no_regargs struct pt_regs regs) /* It is more difficult to avoid calling this function than to call it and ignore errors. */ + old_fs = get_fs(); + set_fs(KERNEL_DS); do_sigaltstack((stack_t __user *)&st, NULL, regs.regs[29]); + set_fs(old_fs); + /* * Don't let your children do this ... diff --git a/arch/mips/kernel/smtc.c b/arch/mips/kernel/smtc.c index cfeb2c155896..39c08254b0f1 100644 --- a/arch/mips/kernel/smtc.c +++ b/arch/mips/kernel/smtc.c @@ -1038,7 +1038,7 @@ void deferred_smtc_ipi(void) * but it's more efficient, given that we're already * running down the IPI queue. */ - __raw_local_irq_restore(flags); + __arch_local_irq_restore(flags); } } @@ -1190,7 +1190,7 @@ void smtc_ipi_replay(void) /* ** But use a raw restore here to avoid recursion. */ - __raw_local_irq_restore(flags); + __arch_local_irq_restore(flags); if (pipi) { self_ipi(pipi); diff --git a/arch/mips/kernel/traps.c b/arch/mips/kernel/traps.c index 03ec0019032b..d053bf4759e4 100644 --- a/arch/mips/kernel/traps.c +++ b/arch/mips/kernel/traps.c @@ -28,6 +28,7 @@ #include <linux/kprobes.h> #include <linux/notifier.h> #include <linux/kdb.h> +#include <linux/irq.h> #include <asm/bootinfo.h> #include <asm/branch.h> @@ -51,7 +52,6 @@ #include <asm/mmu_context.h> #include <asm/types.h> #include <asm/stacktrace.h> -#include <asm/irq.h> #include <asm/uasm.h> extern void check_wait(void); diff --git a/arch/mips/kernel/unaligned.c b/arch/mips/kernel/unaligned.c index 69b039ca8d83..33d5a5ce4a29 100644 --- a/arch/mips/kernel/unaligned.c +++ b/arch/mips/kernel/unaligned.c @@ -109,8 +109,6 @@ static void emulate_load_store_insn(struct pt_regs *regs, unsigned long value; unsigned int res; - regs->regs[0] = 0; - /* * This load never faults. */ diff --git a/arch/mips/mti-malta/malta-platform.c b/arch/mips/mti-malta/malta-platform.c index 72e32a7715be..4c35301720e7 100644 --- a/arch/mips/mti-malta/malta-platform.c +++ b/arch/mips/mti-malta/malta-platform.c @@ -25,6 +25,7 @@ #include <linux/serial_8250.h> #include <linux/mc146818rtc.h> #include <linux/module.h> +#include <linux/irq.h> #include <linux/mtd/partitions.h> #include <linux/mtd/physmap.h> #include <linux/platform_device.h> diff --git a/arch/mips/pci/ops-tx3927.c b/arch/mips/pci/ops-tx3927.c index 31c150196595..6a3bdb5ffa80 100644 --- a/arch/mips/pci/ops-tx3927.c +++ b/arch/mips/pci/ops-tx3927.c @@ -38,6 +38,7 @@ #include <linux/kernel.h> #include <linux/init.h> #include <linux/interrupt.h> +#include <linux/irq.h> #include <asm/addrspace.h> #include <asm/txx9irq.h> diff --git a/arch/mips/pci/ops-tx4927.c b/arch/mips/pci/ops-tx4927.c index 5989e747527f..a1e7e6d80c8c 100644 --- a/arch/mips/pci/ops-tx4927.c +++ b/arch/mips/pci/ops-tx4927.c @@ -17,6 +17,7 @@ */ #include <linux/kernel.h> #include <linux/interrupt.h> +#include <linux/irq.h> #include <asm/txx9/pci.h> #include <asm/txx9/tx4927pcic.h> diff --git a/arch/mips/pmc-sierra/msp71xx/msp_irq_cic.c b/arch/mips/pmc-sierra/msp71xx/msp_irq_cic.c index 94c9c2c9fbc1..07e71ff2433f 100644 --- a/arch/mips/pmc-sierra/msp71xx/msp_irq_cic.c +++ b/arch/mips/pmc-sierra/msp71xx/msp_irq_cic.c @@ -14,6 +14,7 @@ #include <linux/interrupt.h> #include <linux/kernel.h> #include <linux/bitops.h> +#include <linux/irq.h> #include <asm/system.h> diff --git a/arch/mips/powertv/asic/irq_asic.c b/arch/mips/powertv/asic/irq_asic.c index b54d24499b06..e55382434155 100644 --- a/arch/mips/powertv/asic/irq_asic.c +++ b/arch/mips/powertv/asic/irq_asic.c @@ -13,6 +13,7 @@ #include <linux/init.h> #include <linux/interrupt.h> #include <linux/kernel.h> +#include <linux/irq.h> #include <asm/irq_cpu.h> #include <asm/mipsregs.h> diff --git a/arch/mips/rb532/serial.c b/arch/mips/rb532/serial.c index 00ed19f0bdb5..70482540b3db 100644 --- a/arch/mips/rb532/serial.c +++ b/arch/mips/rb532/serial.c @@ -29,6 +29,7 @@ #include <linux/tty.h> #include <linux/serial_core.h> #include <linux/serial_8250.h> +#include <linux/irq.h> #include <asm/serial.h> #include <asm/mach-rc32434/rb.h> diff --git a/arch/mips/sni/a20r.c b/arch/mips/sni/a20r.c index e6980892834a..bbe7187879fa 100644 --- a/arch/mips/sni/a20r.c +++ b/arch/mips/sni/a20r.c @@ -10,6 +10,7 @@ #include <linux/init.h> #include <linux/interrupt.h> +#include <linux/irq.h> #include <linux/platform_device.h> #include <linux/serial_8250.h> diff --git a/arch/mips/sni/pcimt.c b/arch/mips/sni/pcimt.c index 51e62bbaa23b..8c92c73bc717 100644 --- a/arch/mips/sni/pcimt.c +++ b/arch/mips/sni/pcimt.c @@ -11,6 +11,7 @@ #include <linux/init.h> #include <linux/interrupt.h> +#include <linux/irq.h> #include <linux/pci.h> #include <linux/serial_8250.h> diff --git a/arch/mips/sni/pcit.c b/arch/mips/sni/pcit.c index f4699d35858b..dc9874553bec 100644 --- a/arch/mips/sni/pcit.c +++ b/arch/mips/sni/pcit.c @@ -10,6 +10,7 @@ #include <linux/init.h> #include <linux/interrupt.h> +#include <linux/irq.h> #include <linux/pci.h> #include <linux/serial_8250.h> diff --git a/arch/mips/sni/rm200.c b/arch/mips/sni/rm200.c index 90c558f7c0fa..0e6f42c2bbc8 100644 --- a/arch/mips/sni/rm200.c +++ b/arch/mips/sni/rm200.c @@ -13,6 +13,7 @@ #include <linux/delay.h> #include <linux/init.h> #include <linux/interrupt.h> +#include <linux/irq.h> #include <linux/platform_device.h> #include <linux/serial_8250.h> #include <linux/io.h> diff --git a/arch/mips/sni/time.c b/arch/mips/sni/time.c index f3b60e671207..c76151b56568 100644 --- a/arch/mips/sni/time.c +++ b/arch/mips/sni/time.c @@ -1,5 +1,6 @@ #include <linux/types.h> #include <linux/interrupt.h> +#include <linux/irq.h> #include <linux/smp.h> #include <linux/time.h> #include <linux/clockchips.h> diff --git a/arch/mips/txx9/generic/irq_tx4927.c b/arch/mips/txx9/generic/irq_tx4927.c index ad2870def8f1..e1828e8bcaef 100644 --- a/arch/mips/txx9/generic/irq_tx4927.c +++ b/arch/mips/txx9/generic/irq_tx4927.c @@ -25,6 +25,7 @@ */ #include <linux/init.h> #include <linux/interrupt.h> +#include <linux/irq.h> #include <asm/irq_cpu.h> #include <asm/txx9/tx4927.h> diff --git a/arch/mips/txx9/generic/irq_tx4938.c b/arch/mips/txx9/generic/irq_tx4938.c index 025ae11359a8..a6e6e805097a 100644 --- a/arch/mips/txx9/generic/irq_tx4938.c +++ b/arch/mips/txx9/generic/irq_tx4938.c @@ -13,6 +13,7 @@ */ #include <linux/init.h> #include <linux/interrupt.h> +#include <linux/irq.h> #include <asm/irq_cpu.h> #include <asm/txx9/tx4938.h> diff --git a/arch/mips/txx9/generic/irq_tx4939.c b/arch/mips/txx9/generic/irq_tx4939.c index 013213a8706b..3886ad77cbad 100644 --- a/arch/mips/txx9/generic/irq_tx4939.c +++ b/arch/mips/txx9/generic/irq_tx4939.c @@ -19,6 +19,7 @@ */ #include <linux/init.h> #include <linux/interrupt.h> +#include <linux/irq.h> #include <linux/types.h> #include <asm/irq_cpu.h> #include <asm/txx9irq.h> diff --git a/arch/mips/txx9/generic/setup.c b/arch/mips/txx9/generic/setup.c index 575d219b8001..812816c45662 100644 --- a/arch/mips/txx9/generic/setup.c +++ b/arch/mips/txx9/generic/setup.c @@ -24,6 +24,7 @@ #include <linux/leds.h> #include <linux/sysdev.h> #include <linux/slab.h> +#include <linux/irq.h> #include <asm/bootinfo.h> #include <asm/time.h> #include <asm/reboot.h> diff --git a/arch/mips/txx9/jmr3927/irq.c b/arch/mips/txx9/jmr3927/irq.c index 6ec626c9473f..0a7f8e3b9fd7 100644 --- a/arch/mips/txx9/jmr3927/irq.c +++ b/arch/mips/txx9/jmr3927/irq.c @@ -32,6 +32,7 @@ #include <linux/init.h> #include <linux/types.h> #include <linux/interrupt.h> +#include <linux/irq.h> #include <asm/io.h> #include <asm/mipsregs.h> diff --git a/arch/mips/txx9/rbtx4927/irq.c b/arch/mips/txx9/rbtx4927/irq.c index 9c14ebb26cb4..c4b54d20efd3 100644 --- a/arch/mips/txx9/rbtx4927/irq.c +++ b/arch/mips/txx9/rbtx4927/irq.c @@ -111,6 +111,7 @@ #include <linux/init.h> #include <linux/types.h> #include <linux/interrupt.h> +#include <linux/irq.h> #include <asm/io.h> #include <asm/mipsregs.h> #include <asm/txx9/generic.h> diff --git a/arch/mips/txx9/rbtx4938/irq.c b/arch/mips/txx9/rbtx4938/irq.c index 7d21befb8932..67a73a8065ec 100644 --- a/arch/mips/txx9/rbtx4938/irq.c +++ b/arch/mips/txx9/rbtx4938/irq.c @@ -64,6 +64,7 @@ */ #include <linux/init.h> #include <linux/interrupt.h> +#include <linux/irq.h> #include <asm/mipsregs.h> #include <asm/txx9/generic.h> #include <asm/txx9/rbtx4938.h> diff --git a/arch/mips/txx9/rbtx4939/irq.c b/arch/mips/txx9/rbtx4939/irq.c index 500cc0a908e6..57fa740a7205 100644 --- a/arch/mips/txx9/rbtx4939/irq.c +++ b/arch/mips/txx9/rbtx4939/irq.c @@ -11,6 +11,7 @@ */ #include <linux/init.h> #include <linux/interrupt.h> +#include <linux/irq.h> #include <asm/mipsregs.h> #include <asm/txx9/rbtx4939.h> diff --git a/arch/mips/vr41xx/common/irq.c b/arch/mips/vr41xx/common/irq.c index bef06872f012..0975eb72d385 100644 --- a/arch/mips/vr41xx/common/irq.c +++ b/arch/mips/vr41xx/common/irq.c @@ -19,6 +19,7 @@ */ #include <linux/interrupt.h> #include <linux/module.h> +#include <linux/irq.h> #include <asm/irq_cpu.h> #include <asm/system.h> diff --git a/arch/mips/vr41xx/common/siu.c b/arch/mips/vr41xx/common/siu.c index 54eae56108fb..bbd45d2559d6 100644 --- a/arch/mips/vr41xx/common/siu.c +++ b/arch/mips/vr41xx/common/siu.c @@ -22,6 +22,7 @@ #include <linux/ioport.h> #include <linux/platform_device.h> #include <linux/serial_core.h> +#include <linux/irq.h> #include <asm/cpu.h> #include <asm/vr41xx/siu.h> diff --git a/arch/mn10300/include/asm/irqflags.h b/arch/mn10300/include/asm/irqflags.h new file mode 100644 index 000000000000..5e529a117cb2 --- /dev/null +++ b/arch/mn10300/include/asm/irqflags.h @@ -0,0 +1,123 @@ +/* MN10300 IRQ flag handling + * + * Copyright (C) 2010 Red Hat, Inc. All Rights Reserved. + * Written by David Howells (dhowells@redhat.com) + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public Licence + * as published by the Free Software Foundation; either version + * 2 of the Licence, or (at your option) any later version. + */ + +#ifndef _ASM_IRQFLAGS_H +#define _ASM_IRQFLAGS_H + +#include <asm/cpu-regs.h> + +/* + * interrupt control + * - "disabled": run in IM1/2 + * - level 0 - GDB stub + * - level 1 - virtual serial DMA (if present) + * - level 5 - normal interrupt priority + * - level 6 - timer interrupt + * - "enabled": run in IM7 + */ +#ifdef CONFIG_MN10300_TTYSM +#define MN10300_CLI_LEVEL EPSW_IM_2 +#else +#define MN10300_CLI_LEVEL EPSW_IM_1 +#endif + +#ifndef __ASSEMBLY__ + +static inline unsigned long arch_local_save_flags(void) +{ + unsigned long flags; + + asm volatile("mov epsw,%0" : "=d"(flags)); + return flags; +} + +static inline void arch_local_irq_disable(void) +{ + asm volatile( + " and %0,epsw \n" + " or %1,epsw \n" + " nop \n" + " nop \n" + " nop \n" + : + : "i"(~EPSW_IM), "i"(EPSW_IE | MN10300_CLI_LEVEL) + : "memory"); +} + +static inline unsigned long arch_local_irq_save(void) +{ + unsigned long flags; + + flags = arch_local_save_flags(); + arch_local_irq_disable(); + return flags; +} + +/* + * we make sure arch_irq_enable() doesn't cause priority inversion + */ +extern unsigned long __mn10300_irq_enabled_epsw; + +static inline void arch_local_irq_enable(void) +{ + unsigned long tmp; + + asm volatile( + " mov epsw,%0 \n" + " and %1,%0 \n" + " or %2,%0 \n" + " mov %0,epsw \n" + : "=&d"(tmp) + : "i"(~EPSW_IM), "r"(__mn10300_irq_enabled_epsw) + : "memory"); +} + +static inline void arch_local_irq_restore(unsigned long flags) +{ + asm volatile( + " mov %0,epsw \n" + " nop \n" + " nop \n" + " nop \n" + : + : "d"(flags) + : "memory", "cc"); +} + +static inline bool arch_irqs_disabled_flags(unsigned long flags) +{ + return (flags & EPSW_IM) <= MN10300_CLI_LEVEL; +} + +static inline bool arch_irqs_disabled(void) +{ + return arch_irqs_disabled_flags(arch_local_save_flags()); +} + +/* + * Hook to save power by halting the CPU + * - called from the idle loop + * - must reenable interrupts (which takes three instruction cycles to complete) + */ +static inline void arch_safe_halt(void) +{ + asm volatile( + " or %0,epsw \n" + " nop \n" + " nop \n" + " bset %2,(%1) \n" + : + : "i"(EPSW_IE|EPSW_IM), "n"(&CPUM), "i"(CPUM_SLEEP) + : "cc"); +} + +#endif /* __ASSEMBLY__ */ +#endif /* _ASM_IRQFLAGS_H */ diff --git a/arch/mn10300/include/asm/system.h b/arch/mn10300/include/asm/system.h index 3636c054dcd5..9f7c7e17c01e 100644 --- a/arch/mn10300/include/asm/system.h +++ b/arch/mn10300/include/asm/system.h @@ -17,6 +17,7 @@ #ifndef __ASSEMBLY__ #include <linux/kernel.h> +#include <linux/irqflags.h> struct task_struct; struct thread_struct; @@ -81,114 +82,6 @@ do { \ /*****************************************************************************/ /* - * interrupt control - * - "disabled": run in IM1/2 - * - level 0 - GDB stub - * - level 1 - virtual serial DMA (if present) - * - level 5 - normal interrupt priority - * - level 6 - timer interrupt - * - "enabled": run in IM7 - */ -#ifdef CONFIG_MN10300_TTYSM -#define MN10300_CLI_LEVEL EPSW_IM_2 -#else -#define MN10300_CLI_LEVEL EPSW_IM_1 -#endif - -#define local_save_flags(x) \ -do { \ - typecheck(unsigned long, x); \ - asm volatile( \ - " mov epsw,%0 \n" \ - : "=d"(x) \ - ); \ -} while (0) - -#define local_irq_disable() \ -do { \ - asm volatile( \ - " and %0,epsw \n" \ - " or %1,epsw \n" \ - " nop \n" \ - " nop \n" \ - " nop \n" \ - : \ - : "i"(~EPSW_IM), "i"(EPSW_IE | MN10300_CLI_LEVEL) \ - ); \ -} while (0) - -#define local_irq_save(x) \ -do { \ - local_save_flags(x); \ - local_irq_disable(); \ -} while (0) - -/* - * we make sure local_irq_enable() doesn't cause priority inversion - */ -#ifndef __ASSEMBLY__ - -extern unsigned long __mn10300_irq_enabled_epsw; - -#endif - -#define local_irq_enable() \ -do { \ - unsigned long tmp; \ - \ - asm volatile( \ - " mov epsw,%0 \n" \ - " and %1,%0 \n" \ - " or %2,%0 \n" \ - " mov %0,epsw \n" \ - : "=&d"(tmp) \ - : "i"(~EPSW_IM), "r"(__mn10300_irq_enabled_epsw) \ - : "cc" \ - ); \ -} while (0) - -#define local_irq_restore(x) \ -do { \ - typecheck(unsigned long, x); \ - asm volatile( \ - " mov %0,epsw \n" \ - " nop \n" \ - " nop \n" \ - " nop \n" \ - : \ - : "d"(x) \ - : "memory", "cc" \ - ); \ -} while (0) - -#define irqs_disabled() \ -({ \ - unsigned long flags; \ - local_save_flags(flags); \ - (flags & EPSW_IM) <= MN10300_CLI_LEVEL; \ -}) - -/* hook to save power by halting the CPU - * - called from the idle loop - * - must reenable interrupts (which takes three instruction cycles to complete) - */ -#define safe_halt() \ -do { \ - asm volatile(" or %0,epsw \n" \ - " nop \n" \ - " nop \n" \ - " bset %2,(%1) \n" \ - : \ - : "i"(EPSW_IE|EPSW_IM), "n"(&CPUM), "i"(CPUM_SLEEP)\ - : "cc" \ - ); \ -} while (0) - -#define STI or EPSW_IE|EPSW_IM,epsw -#define CLI and ~EPSW_IM,epsw; or EPSW_IE|MN10300_CLI_LEVEL,epsw; nop; nop; nop - -/*****************************************************************************/ -/* * MN10300 doesn't actually have an exchange instruction */ #ifndef __ASSEMBLY__ diff --git a/arch/mn10300/kernel/entry.S b/arch/mn10300/kernel/entry.S index d9ed5a15c547..3d394b4eefba 100644 --- a/arch/mn10300/kernel/entry.S +++ b/arch/mn10300/kernel/entry.S @@ -16,6 +16,7 @@ #include <linux/linkage.h> #include <asm/smp.h> #include <asm/system.h> +#include <asm/irqflags.h> #include <asm/thread_info.h> #include <asm/intctl-regs.h> #include <asm/busctl-regs.h> diff --git a/arch/parisc/Kconfig b/arch/parisc/Kconfig index 907417d187e1..79a04a9394d5 100644 --- a/arch/parisc/Kconfig +++ b/arch/parisc/Kconfig @@ -16,6 +16,7 @@ config PARISC select RTC_DRV_GENERIC select INIT_ALL_POSSIBLE select BUG + select HAVE_IRQ_WORK select HAVE_PERF_EVENTS select GENERIC_ATOMIC64 if !64BIT help diff --git a/arch/parisc/include/asm/irqflags.h b/arch/parisc/include/asm/irqflags.h new file mode 100644 index 000000000000..34f9cb9b4754 --- /dev/null +++ b/arch/parisc/include/asm/irqflags.h @@ -0,0 +1,46 @@ +#ifndef __PARISC_IRQFLAGS_H +#define __PARISC_IRQFLAGS_H + +#include <linux/types.h> +#include <asm/psw.h> + +static inline unsigned long arch_local_save_flags(void) +{ + unsigned long flags; + asm volatile("ssm 0, %0" : "=r" (flags) : : "memory"); + return flags; +} + +static inline void arch_local_irq_disable(void) +{ + asm volatile("rsm %0,%%r0\n" : : "i" (PSW_I) : "memory"); +} + +static inline void arch_local_irq_enable(void) +{ + asm volatile("ssm %0,%%r0\n" : : "i" (PSW_I) : "memory"); +} + +static inline unsigned long arch_local_irq_save(void) +{ + unsigned long flags; + asm volatile("rsm %1,%0" : "=r" (flags) : "i" (PSW_I) : "memory"); + return flags; +} + +static inline void arch_local_irq_restore(unsigned long flags) +{ + asm volatile("mtsm %0" : : "r" (flags) : "memory"); +} + +static inline bool arch_irqs_disabled_flags(unsigned long flags) +{ + return (flags & PSW_I) == 0; +} + +static inline bool arch_irqs_disabled(void) +{ + return arch_irqs_disabled_flags(arch_local_save_flags()); +} + +#endif /* __PARISC_IRQFLAGS_H */ diff --git a/arch/parisc/include/asm/perf_event.h b/arch/parisc/include/asm/perf_event.h index cc146427d8f9..1e0fd8ba6c03 100644 --- a/arch/parisc/include/asm/perf_event.h +++ b/arch/parisc/include/asm/perf_event.h @@ -1,7 +1,6 @@ #ifndef __ASM_PARISC_PERF_EVENT_H #define __ASM_PARISC_PERF_EVENT_H -/* parisc only supports software events through this interface. */ -static inline void set_perf_event_pending(void) { } +/* Empty, just to avoid compiling error */ #endif /* __ASM_PARISC_PERF_EVENT_H */ diff --git a/arch/parisc/include/asm/system.h b/arch/parisc/include/asm/system.h index 2ab4af58ecb9..b19e63a8e848 100644 --- a/arch/parisc/include/asm/system.h +++ b/arch/parisc/include/asm/system.h @@ -1,7 +1,7 @@ #ifndef __PARISC_SYSTEM_H #define __PARISC_SYSTEM_H -#include <asm/psw.h> +#include <linux/irqflags.h> /* The program status word as bitfields. */ struct pa_psw { @@ -48,23 +48,6 @@ extern struct task_struct *_switch_to(struct task_struct *, struct task_struct * (last) = _switch_to(prev, next); \ } while(0) -/* interrupt control */ -#define local_save_flags(x) __asm__ __volatile__("ssm 0, %0" : "=r" (x) : : "memory") -#define local_irq_disable() __asm__ __volatile__("rsm %0,%%r0\n" : : "i" (PSW_I) : "memory" ) -#define local_irq_enable() __asm__ __volatile__("ssm %0,%%r0\n" : : "i" (PSW_I) : "memory" ) - -#define local_irq_save(x) \ - __asm__ __volatile__("rsm %1,%0" : "=r" (x) :"i" (PSW_I) : "memory" ) -#define local_irq_restore(x) \ - __asm__ __volatile__("mtsm %0" : : "r" (x) : "memory" ) - -#define irqs_disabled() \ -({ \ - unsigned long flags; \ - local_save_flags(flags); \ - (flags & PSW_I) == 0; \ -}) - #define mfctl(reg) ({ \ unsigned long cr; \ __asm__ __volatile__( \ diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig index 631e5a0fb6ab..4b1e521d966f 100644 --- a/arch/powerpc/Kconfig +++ b/arch/powerpc/Kconfig @@ -138,6 +138,7 @@ config PPC select HAVE_OPROFILE select HAVE_SYSCALL_WRAPPERS if PPC64 select GENERIC_ATOMIC64 if PPC32 + select HAVE_IRQ_WORK select HAVE_PERF_EVENTS select HAVE_REGS_AND_STACK_ACCESS_API select HAVE_HW_BREAKPOINT if PERF_EVENTS && PPC_BOOK3S_64 diff --git a/arch/powerpc/boot/dts/mpc8536ds.dts b/arch/powerpc/boot/dts/mpc8536ds.dts index 815cebb2e3e5..a75c10eed269 100644 --- a/arch/powerpc/boot/dts/mpc8536ds.dts +++ b/arch/powerpc/boot/dts/mpc8536ds.dts @@ -108,6 +108,58 @@ }; }; + spi@7000 { + #address-cells = <1>; + #size-cells = <0>; + compatible = "fsl,mpc8536-espi"; + reg = <0x7000 0x1000>; + interrupts = <59 0x2>; + interrupt-parent = <&mpic>; + fsl,espi-num-chipselects = <4>; + + flash@0 { + #address-cells = <1>; + #size-cells = <1>; + compatible = "spansion,s25sl12801"; + reg = <0>; + spi-max-frequency = <40000000>; + partition@u-boot { + label = "u-boot"; + reg = <0x00000000 0x00100000>; + read-only; + }; + partition@kernel { + label = "kernel"; + reg = <0x00100000 0x00500000>; + read-only; + }; + partition@dtb { + label = "dtb"; + reg = <0x00600000 0x00100000>; + read-only; + }; + partition@fs { + label = "file system"; + reg = <0x00700000 0x00900000>; + }; + }; + flash@1 { + compatible = "spansion,s25sl12801"; + reg = <1>; + spi-max-frequency = <40000000>; + }; + flash@2 { + compatible = "spansion,s25sl12801"; + reg = <2>; + spi-max-frequency = <40000000>; + }; + flash@3 { + compatible = "spansion,s25sl12801"; + reg = <3>; + spi-max-frequency = <40000000>; + }; + }; + dma@21300 { #address-cells = <1>; #size-cells = <1>; diff --git a/arch/powerpc/boot/dts/p4080ds.dts b/arch/powerpc/boot/dts/p4080ds.dts index 2f0de24e3822..5b7fc29dd6cf 100644 --- a/arch/powerpc/boot/dts/p4080ds.dts +++ b/arch/powerpc/boot/dts/p4080ds.dts @@ -236,22 +236,19 @@ }; spi@110000 { - cell-index = <0>; #address-cells = <1>; #size-cells = <0>; - compatible = "fsl,espi"; + compatible = "fsl,p4080-espi", "fsl,mpc8536-espi"; reg = <0x110000 0x1000>; interrupts = <53 0x2>; interrupt-parent = <&mpic>; - espi,num-ss-bits = <4>; - mode = "cpu"; + fsl,espi-num-chipselects = <4>; - fsl_m25p80@0 { + flash@0 { #address-cells = <1>; #size-cells = <1>; - compatible = "fsl,espi-flash"; + compatible = "spansion,s25sl12801"; reg = <0>; - linux,modalias = "fsl_m25p80"; spi-max-frequency = <40000000>; /* input clock */ partition@u-boot { label = "u-boot"; diff --git a/arch/powerpc/include/asm/hw_irq.h b/arch/powerpc/include/asm/hw_irq.h index bd100fcf40d0..ff08b70b36d4 100644 --- a/arch/powerpc/include/asm/hw_irq.h +++ b/arch/powerpc/include/asm/hw_irq.h @@ -16,42 +16,57 @@ extern void timer_interrupt(struct pt_regs *); #ifdef CONFIG_PPC64 #include <asm/paca.h> -static inline unsigned long local_get_flags(void) +static inline unsigned long arch_local_save_flags(void) { unsigned long flags; - __asm__ __volatile__("lbz %0,%1(13)" - : "=r" (flags) - : "i" (offsetof(struct paca_struct, soft_enabled))); + asm volatile( + "lbz %0,%1(13)" + : "=r" (flags) + : "i" (offsetof(struct paca_struct, soft_enabled))); return flags; } -static inline unsigned long raw_local_irq_disable(void) +static inline unsigned long arch_local_irq_disable(void) { unsigned long flags, zero; - __asm__ __volatile__("li %1,0; lbz %0,%2(13); stb %1,%2(13)" - : "=r" (flags), "=&r" (zero) - : "i" (offsetof(struct paca_struct, soft_enabled)) - : "memory"); + asm volatile( + "li %1,0; lbz %0,%2(13); stb %1,%2(13)" + : "=r" (flags), "=&r" (zero) + : "i" (offsetof(struct paca_struct, soft_enabled)) + : "memory"); return flags; } -extern void raw_local_irq_restore(unsigned long); +extern void arch_local_irq_restore(unsigned long); extern void iseries_handle_interrupts(void); -#define raw_local_irq_enable() raw_local_irq_restore(1) -#define raw_local_save_flags(flags) ((flags) = local_get_flags()) -#define raw_local_irq_save(flags) ((flags) = raw_local_irq_disable()) +static inline void arch_local_irq_enable(void) +{ + arch_local_irq_restore(1); +} + +static inline unsigned long arch_local_irq_save(void) +{ + return arch_local_irq_disable(); +} + +static inline bool arch_irqs_disabled_flags(unsigned long flags) +{ + return flags == 0; +} -#define raw_irqs_disabled() (local_get_flags() == 0) -#define raw_irqs_disabled_flags(flags) ((flags) == 0) +static inline bool arch_irqs_disabled(void) +{ + return arch_irqs_disabled_flags(arch_local_save_flags()); +} #ifdef CONFIG_PPC_BOOK3E -#define __hard_irq_enable() __asm__ __volatile__("wrteei 1": : :"memory"); -#define __hard_irq_disable() __asm__ __volatile__("wrteei 0": : :"memory"); +#define __hard_irq_enable() asm volatile("wrteei 1" : : : "memory"); +#define __hard_irq_disable() asm volatile("wrteei 0" : : : "memory"); #else #define __hard_irq_enable() __mtmsrd(mfmsr() | MSR_EE, 1) #define __hard_irq_disable() __mtmsrd(mfmsr() & ~MSR_EE, 1) @@ -64,64 +79,66 @@ extern void iseries_handle_interrupts(void); get_paca()->hard_enabled = 0; \ } while(0) -#else +#else /* CONFIG_PPC64 */ -#if defined(CONFIG_BOOKE) #define SET_MSR_EE(x) mtmsr(x) -#define raw_local_irq_restore(flags) __asm__ __volatile__("wrtee %0" : : "r" (flags) : "memory") + +static inline unsigned long arch_local_save_flags(void) +{ + return mfmsr(); +} + +static inline void arch_local_irq_restore(unsigned long flags) +{ +#if defined(CONFIG_BOOKE) + asm volatile("wrtee %0" : : "r" (flags) : "memory"); #else -#define SET_MSR_EE(x) mtmsr(x) -#define raw_local_irq_restore(flags) mtmsr(flags) + mtmsr(flags); #endif +} -static inline void raw_local_irq_disable(void) +static inline unsigned long arch_local_irq_save(void) { + unsigned long flags = arch_local_save_flags(); #ifdef CONFIG_BOOKE - __asm__ __volatile__("wrteei 0": : :"memory"); + asm volatile("wrteei 0" : : : "memory"); #else - unsigned long msr; - - msr = mfmsr(); - SET_MSR_EE(msr & ~MSR_EE); + SET_MSR_EE(flags & ~MSR_EE); #endif + return flags; } -static inline void raw_local_irq_enable(void) +static inline void arch_local_irq_disable(void) { #ifdef CONFIG_BOOKE - __asm__ __volatile__("wrteei 1": : :"memory"); + asm volatile("wrteei 0" : : : "memory"); #else - unsigned long msr; - - msr = mfmsr(); - SET_MSR_EE(msr | MSR_EE); + arch_local_irq_save(); #endif } -static inline void raw_local_irq_save_ptr(unsigned long *flags) +static inline void arch_local_irq_enable(void) { - unsigned long msr; - msr = mfmsr(); - *flags = msr; #ifdef CONFIG_BOOKE - __asm__ __volatile__("wrteei 0": : :"memory"); + asm volatile("wrteei 1" : : : "memory"); #else - SET_MSR_EE(msr & ~MSR_EE); + unsigned long msr = mfmsr(); + SET_MSR_EE(msr | MSR_EE); #endif } -#define raw_local_save_flags(flags) ((flags) = mfmsr()) -#define raw_local_irq_save(flags) raw_local_irq_save_ptr(&flags) -#define raw_irqs_disabled() ((mfmsr() & MSR_EE) == 0) -#define raw_irqs_disabled_flags(flags) (((flags) & MSR_EE) == 0) - -#define hard_irq_disable() raw_local_irq_disable() - -static inline int irqs_disabled_flags(unsigned long flags) +static inline bool arch_irqs_disabled_flags(unsigned long flags) { return (flags & MSR_EE) == 0; } +static inline bool arch_irqs_disabled(void) +{ + return arch_irqs_disabled_flags(arch_local_save_flags()); +} + +#define hard_irq_disable() arch_local_irq_disable() + #endif /* CONFIG_PPC64 */ /* diff --git a/arch/powerpc/include/asm/irqflags.h b/arch/powerpc/include/asm/irqflags.h index 5f68ecfdf516..b85d8ddbb666 100644 --- a/arch/powerpc/include/asm/irqflags.h +++ b/arch/powerpc/include/asm/irqflags.h @@ -6,7 +6,7 @@ #ifndef __ASSEMBLY__ /* - * Get definitions for raw_local_save_flags(x), etc. + * Get definitions for arch_local_save_flags(x), etc. */ #include <asm/hw_irq.h> diff --git a/arch/powerpc/include/asm/paca.h b/arch/powerpc/include/asm/paca.h index 1ff6662f7faf..9b287fdd8ea3 100644 --- a/arch/powerpc/include/asm/paca.h +++ b/arch/powerpc/include/asm/paca.h @@ -129,7 +129,7 @@ struct paca_struct { u8 soft_enabled; /* irq soft-enable flag */ u8 hard_enabled; /* set if irqs are enabled in MSR */ u8 io_sync; /* writel() needs spin_unlock sync */ - u8 perf_event_pending; /* PM interrupt while soft-disabled */ + u8 irq_work_pending; /* IRQ_WORK interrupt while soft-disable */ /* Stuff for accurate time accounting */ u64 user_time; /* accumulated usermode TB ticks */ diff --git a/arch/powerpc/include/asm/system.h b/arch/powerpc/include/asm/system.h index 6c294acac848..9c3d160670b4 100644 --- a/arch/powerpc/include/asm/system.h +++ b/arch/powerpc/include/asm/system.h @@ -542,10 +542,6 @@ extern void reloc_got2(unsigned long); #define PTRRELOC(x) ((typeof(x)) add_reloc_offset((unsigned long)(x))) -#ifdef CONFIG_VIRT_CPU_ACCOUNTING -extern void account_system_vtime(struct task_struct *); -#endif - extern struct dentry *powerpc_debugfs_root; #endif /* __KERNEL__ */ diff --git a/arch/powerpc/kernel/exceptions-64s.S b/arch/powerpc/kernel/exceptions-64s.S index f53029a01554..39b0c48872d2 100644 --- a/arch/powerpc/kernel/exceptions-64s.S +++ b/arch/powerpc/kernel/exceptions-64s.S @@ -818,12 +818,12 @@ END_FW_FTR_SECTION_IFCLR(FW_FEATURE_ISERIES) /* * hash_page couldn't handle it, set soft interrupt enable back - * to what it was before the trap. Note that .raw_local_irq_restore + * to what it was before the trap. Note that .arch_local_irq_restore * handles any interrupts pending at this point. */ ld r3,SOFTE(r1) TRACE_AND_RESTORE_IRQ_PARTIAL(r3, 11f) - bl .raw_local_irq_restore + bl .arch_local_irq_restore b 11f /* We have a data breakpoint exception - handle it */ diff --git a/arch/powerpc/kernel/irq.c b/arch/powerpc/kernel/irq.c index 4a65386995d7..1903290f5469 100644 --- a/arch/powerpc/kernel/irq.c +++ b/arch/powerpc/kernel/irq.c @@ -116,7 +116,7 @@ static inline notrace void set_soft_enabled(unsigned long enable) : : "r" (enable), "i" (offsetof(struct paca_struct, soft_enabled))); } -notrace void raw_local_irq_restore(unsigned long en) +notrace void arch_local_irq_restore(unsigned long en) { /* * get_paca()->soft_enabled = en; @@ -192,7 +192,7 @@ notrace void raw_local_irq_restore(unsigned long en) __hard_irq_enable(); } -EXPORT_SYMBOL(raw_local_irq_restore); +EXPORT_SYMBOL(arch_local_irq_restore); #endif /* CONFIG_PPC64 */ static int show_other_interrupts(struct seq_file *p, int prec) diff --git a/arch/powerpc/kernel/perf_callchain.c b/arch/powerpc/kernel/perf_callchain.c index 95ad9dad298e..d05ae4204bbf 100644 --- a/arch/powerpc/kernel/perf_callchain.c +++ b/arch/powerpc/kernel/perf_callchain.c @@ -23,18 +23,6 @@ #include "ppc32.h" #endif -/* - * Store another value in a callchain_entry. - */ -static inline void callchain_store(struct perf_callchain_entry *entry, u64 ip) -{ - unsigned int nr = entry->nr; - - if (nr < PERF_MAX_STACK_DEPTH) { - entry->ip[nr] = ip; - entry->nr = nr + 1; - } -} /* * Is sp valid as the address of the next kernel stack frame after prev_sp? @@ -58,8 +46,8 @@ static int valid_next_sp(unsigned long sp, unsigned long prev_sp) return 0; } -static void perf_callchain_kernel(struct pt_regs *regs, - struct perf_callchain_entry *entry) +void +perf_callchain_kernel(struct perf_callchain_entry *entry, struct pt_regs *regs) { unsigned long sp, next_sp; unsigned long next_ip; @@ -69,8 +57,7 @@ static void perf_callchain_kernel(struct pt_regs *regs, lr = regs->link; sp = regs->gpr[1]; - callchain_store(entry, PERF_CONTEXT_KERNEL); - callchain_store(entry, regs->nip); + perf_callchain_store(entry, regs->nip); if (!validate_sp(sp, current, STACK_FRAME_OVERHEAD)) return; @@ -89,7 +76,7 @@ static void perf_callchain_kernel(struct pt_regs *regs, next_ip = regs->nip; lr = regs->link; level = 0; - callchain_store(entry, PERF_CONTEXT_KERNEL); + perf_callchain_store(entry, PERF_CONTEXT_KERNEL); } else { if (level == 0) @@ -111,7 +98,7 @@ static void perf_callchain_kernel(struct pt_regs *regs, ++level; } - callchain_store(entry, next_ip); + perf_callchain_store(entry, next_ip); if (!valid_next_sp(next_sp, sp)) return; sp = next_sp; @@ -233,8 +220,8 @@ static int sane_signal_64_frame(unsigned long sp) puc == (unsigned long) &sf->uc; } -static void perf_callchain_user_64(struct pt_regs *regs, - struct perf_callchain_entry *entry) +static void perf_callchain_user_64(struct perf_callchain_entry *entry, + struct pt_regs *regs) { unsigned long sp, next_sp; unsigned long next_ip; @@ -246,8 +233,7 @@ static void perf_callchain_user_64(struct pt_regs *regs, next_ip = regs->nip; lr = regs->link; sp = regs->gpr[1]; - callchain_store(entry, PERF_CONTEXT_USER); - callchain_store(entry, next_ip); + perf_callchain_store(entry, next_ip); for (;;) { fp = (unsigned long __user *) sp; @@ -276,14 +262,14 @@ static void perf_callchain_user_64(struct pt_regs *regs, read_user_stack_64(&uregs[PT_R1], &sp)) return; level = 0; - callchain_store(entry, PERF_CONTEXT_USER); - callchain_store(entry, next_ip); + perf_callchain_store(entry, PERF_CONTEXT_USER); + perf_callchain_store(entry, next_ip); continue; } if (level == 0) next_ip = lr; - callchain_store(entry, next_ip); + perf_callchain_store(entry, next_ip); ++level; sp = next_sp; } @@ -315,8 +301,8 @@ static int read_user_stack_32(unsigned int __user *ptr, unsigned int *ret) return __get_user_inatomic(*ret, ptr); } -static inline void perf_callchain_user_64(struct pt_regs *regs, - struct perf_callchain_entry *entry) +static inline void perf_callchain_user_64(struct perf_callchain_entry *entry, + struct pt_regs *regs) { } @@ -435,8 +421,8 @@ static unsigned int __user *signal_frame_32_regs(unsigned int sp, return mctx->mc_gregs; } -static void perf_callchain_user_32(struct pt_regs *regs, - struct perf_callchain_entry *entry) +static void perf_callchain_user_32(struct perf_callchain_entry *entry, + struct pt_regs *regs) { unsigned int sp, next_sp; unsigned int next_ip; @@ -447,8 +433,7 @@ static void perf_callchain_user_32(struct pt_regs *regs, next_ip = regs->nip; lr = regs->link; sp = regs->gpr[1]; - callchain_store(entry, PERF_CONTEXT_USER); - callchain_store(entry, next_ip); + perf_callchain_store(entry, next_ip); while (entry->nr < PERF_MAX_STACK_DEPTH) { fp = (unsigned int __user *) (unsigned long) sp; @@ -470,45 +455,24 @@ static void perf_callchain_user_32(struct pt_regs *regs, read_user_stack_32(&uregs[PT_R1], &sp)) return; level = 0; - callchain_store(entry, PERF_CONTEXT_USER); - callchain_store(entry, next_ip); + perf_callchain_store(entry, PERF_CONTEXT_USER); + perf_callchain_store(entry, next_ip); continue; } if (level == 0) next_ip = lr; - callchain_store(entry, next_ip); + perf_callchain_store(entry, next_ip); ++level; sp = next_sp; } } -/* - * Since we can't get PMU interrupts inside a PMU interrupt handler, - * we don't need separate irq and nmi entries here. - */ -static DEFINE_PER_CPU(struct perf_callchain_entry, cpu_perf_callchain); - -struct perf_callchain_entry *perf_callchain(struct pt_regs *regs) +void +perf_callchain_user(struct perf_callchain_entry *entry, struct pt_regs *regs) { - struct perf_callchain_entry *entry = &__get_cpu_var(cpu_perf_callchain); - - entry->nr = 0; - - if (!user_mode(regs)) { - perf_callchain_kernel(regs, entry); - if (current->mm) - regs = task_pt_regs(current); - else - regs = NULL; - } - - if (regs) { - if (current_is_64bit()) - perf_callchain_user_64(regs, entry); - else - perf_callchain_user_32(regs, entry); - } - - return entry; + if (current_is_64bit()) + perf_callchain_user_64(entry, regs); + else + perf_callchain_user_32(entry, regs); } diff --git a/arch/powerpc/kernel/perf_event.c b/arch/powerpc/kernel/perf_event.c index d301a30445e0..3129c855933c 100644 --- a/arch/powerpc/kernel/perf_event.c +++ b/arch/powerpc/kernel/perf_event.c @@ -402,6 +402,9 @@ static void power_pmu_read(struct perf_event *event) { s64 val, delta, prev; + if (event->hw.state & PERF_HES_STOPPED) + return; + if (!event->hw.idx) return; /* @@ -517,7 +520,7 @@ static void write_mmcr0(struct cpu_hw_events *cpuhw, unsigned long mmcr0) * Disable all events to prevent PMU interrupts and to allow * events to be added or removed. */ -void hw_perf_disable(void) +static void power_pmu_disable(struct pmu *pmu) { struct cpu_hw_events *cpuhw; unsigned long flags; @@ -565,7 +568,7 @@ void hw_perf_disable(void) * If we were previously disabled and events were added, then * put the new config on the PMU. */ -void hw_perf_enable(void) +static void power_pmu_enable(struct pmu *pmu) { struct perf_event *event; struct cpu_hw_events *cpuhw; @@ -672,6 +675,8 @@ void hw_perf_enable(void) } local64_set(&event->hw.prev_count, val); event->hw.idx = idx; + if (event->hw.state & PERF_HES_STOPPED) + val = 0; write_pmc(idx, val); perf_event_update_userpage(event); } @@ -727,7 +732,7 @@ static int collect_events(struct perf_event *group, int max_count, * re-enable the PMU in order to get hw_perf_enable to do the * actual work of reconfiguring the PMU. */ -static int power_pmu_enable(struct perf_event *event) +static int power_pmu_add(struct perf_event *event, int ef_flags) { struct cpu_hw_events *cpuhw; unsigned long flags; @@ -735,7 +740,7 @@ static int power_pmu_enable(struct perf_event *event) int ret = -EAGAIN; local_irq_save(flags); - perf_disable(); + perf_pmu_disable(event->pmu); /* * Add the event to the list (if there is room) @@ -749,6 +754,9 @@ static int power_pmu_enable(struct perf_event *event) cpuhw->events[n0] = event->hw.config; cpuhw->flags[n0] = event->hw.event_base; + if (!(ef_flags & PERF_EF_START)) + event->hw.state = PERF_HES_STOPPED | PERF_HES_UPTODATE; + /* * If group events scheduling transaction was started, * skip the schedulability test here, it will be peformed @@ -769,7 +777,7 @@ nocheck: ret = 0; out: - perf_enable(); + perf_pmu_enable(event->pmu); local_irq_restore(flags); return ret; } @@ -777,14 +785,14 @@ nocheck: /* * Remove a event from the PMU. */ -static void power_pmu_disable(struct perf_event *event) +static void power_pmu_del(struct perf_event *event, int ef_flags) { struct cpu_hw_events *cpuhw; long i; unsigned long flags; local_irq_save(flags); - perf_disable(); + perf_pmu_disable(event->pmu); power_pmu_read(event); @@ -821,34 +829,60 @@ static void power_pmu_disable(struct perf_event *event) cpuhw->mmcr[0] &= ~(MMCR0_PMXE | MMCR0_FCECE); } - perf_enable(); + perf_pmu_enable(event->pmu); local_irq_restore(flags); } /* - * Re-enable interrupts on a event after they were throttled - * because they were coming too fast. + * POWER-PMU does not support disabling individual counters, hence + * program their cycle counter to their max value and ignore the interrupts. */ -static void power_pmu_unthrottle(struct perf_event *event) + +static void power_pmu_start(struct perf_event *event, int ef_flags) +{ + unsigned long flags; + s64 left; + + if (!event->hw.idx || !event->hw.sample_period) + return; + + if (!(event->hw.state & PERF_HES_STOPPED)) + return; + + if (ef_flags & PERF_EF_RELOAD) + WARN_ON_ONCE(!(event->hw.state & PERF_HES_UPTODATE)); + + local_irq_save(flags); + perf_pmu_disable(event->pmu); + + event->hw.state = 0; + left = local64_read(&event->hw.period_left); + write_pmc(event->hw.idx, left); + + perf_event_update_userpage(event); + perf_pmu_enable(event->pmu); + local_irq_restore(flags); +} + +static void power_pmu_stop(struct perf_event *event, int ef_flags) { - s64 val, left; unsigned long flags; if (!event->hw.idx || !event->hw.sample_period) return; + + if (event->hw.state & PERF_HES_STOPPED) + return; + local_irq_save(flags); - perf_disable(); + perf_pmu_disable(event->pmu); + power_pmu_read(event); - left = event->hw.sample_period; - event->hw.last_period = left; - val = 0; - if (left < 0x80000000L) - val = 0x80000000L - left; - write_pmc(event->hw.idx, val); - local64_set(&event->hw.prev_count, val); - local64_set(&event->hw.period_left, left); + event->hw.state |= PERF_HES_STOPPED | PERF_HES_UPTODATE; + write_pmc(event->hw.idx, 0); + perf_event_update_userpage(event); - perf_enable(); + perf_pmu_enable(event->pmu); local_irq_restore(flags); } @@ -857,10 +891,11 @@ static void power_pmu_unthrottle(struct perf_event *event) * Set the flag to make pmu::enable() not perform the * schedulability test, it will be performed at commit time */ -void power_pmu_start_txn(const struct pmu *pmu) +void power_pmu_start_txn(struct pmu *pmu) { struct cpu_hw_events *cpuhw = &__get_cpu_var(cpu_hw_events); + perf_pmu_disable(pmu); cpuhw->group_flag |= PERF_EVENT_TXN; cpuhw->n_txn_start = cpuhw->n_events; } @@ -870,11 +905,12 @@ void power_pmu_start_txn(const struct pmu *pmu) * Clear the flag and pmu::enable() will perform the * schedulability test. */ -void power_pmu_cancel_txn(const struct pmu *pmu) +void power_pmu_cancel_txn(struct pmu *pmu) { struct cpu_hw_events *cpuhw = &__get_cpu_var(cpu_hw_events); cpuhw->group_flag &= ~PERF_EVENT_TXN; + perf_pmu_enable(pmu); } /* @@ -882,7 +918,7 @@ void power_pmu_cancel_txn(const struct pmu *pmu) * Perform the group schedulability test as a whole * Return 0 if success */ -int power_pmu_commit_txn(const struct pmu *pmu) +int power_pmu_commit_txn(struct pmu *pmu) { struct cpu_hw_events *cpuhw; long i, n; @@ -901,19 +937,10 @@ int power_pmu_commit_txn(const struct pmu *pmu) cpuhw->event[i]->hw.config = cpuhw->events[i]; cpuhw->group_flag &= ~PERF_EVENT_TXN; + perf_pmu_enable(pmu); return 0; } -struct pmu power_pmu = { - .enable = power_pmu_enable, - .disable = power_pmu_disable, - .read = power_pmu_read, - .unthrottle = power_pmu_unthrottle, - .start_txn = power_pmu_start_txn, - .cancel_txn = power_pmu_cancel_txn, - .commit_txn = power_pmu_commit_txn, -}; - /* * Return 1 if we might be able to put event on a limited PMC, * or 0 if not. @@ -1014,7 +1041,7 @@ static int hw_perf_cache_event(u64 config, u64 *eventp) return 0; } -const struct pmu *hw_perf_event_init(struct perf_event *event) +static int power_pmu_event_init(struct perf_event *event) { u64 ev; unsigned long flags; @@ -1026,25 +1053,27 @@ const struct pmu *hw_perf_event_init(struct perf_event *event) struct cpu_hw_events *cpuhw; if (!ppmu) - return ERR_PTR(-ENXIO); + return -ENOENT; + switch (event->attr.type) { case PERF_TYPE_HARDWARE: ev = event->attr.config; if (ev >= ppmu->n_generic || ppmu->generic_events[ev] == 0) - return ERR_PTR(-EOPNOTSUPP); + return -EOPNOTSUPP; ev = ppmu->generic_events[ev]; break; case PERF_TYPE_HW_CACHE: err = hw_perf_cache_event(event->attr.config, &ev); if (err) - return ERR_PTR(err); + return err; break; case PERF_TYPE_RAW: ev = event->attr.config; break; default: - return ERR_PTR(-EINVAL); + return -ENOENT; } + event->hw.config_base = ev; event->hw.idx = 0; @@ -1063,7 +1092,7 @@ const struct pmu *hw_perf_event_init(struct perf_event *event) * XXX we should check if the task is an idle task. */ flags = 0; - if (event->ctx->task) + if (event->attach_state & PERF_ATTACH_TASK) flags |= PPMU_ONLY_COUNT_RUN; /* @@ -1081,7 +1110,7 @@ const struct pmu *hw_perf_event_init(struct perf_event *event) */ ev = normal_pmc_alternative(ev, flags); if (!ev) - return ERR_PTR(-EINVAL); + return -EINVAL; } } @@ -1095,19 +1124,19 @@ const struct pmu *hw_perf_event_init(struct perf_event *event) n = collect_events(event->group_leader, ppmu->n_counter - 1, ctrs, events, cflags); if (n < 0) - return ERR_PTR(-EINVAL); + return -EINVAL; } events[n] = ev; ctrs[n] = event; cflags[n] = flags; if (check_excludes(ctrs, cflags, n, 1)) - return ERR_PTR(-EINVAL); + return -EINVAL; cpuhw = &get_cpu_var(cpu_hw_events); err = power_check_constraints(cpuhw, events, cflags, n + 1); put_cpu_var(cpu_hw_events); if (err) - return ERR_PTR(-EINVAL); + return -EINVAL; event->hw.config = events[n]; event->hw.event_base = cflags[n]; @@ -1132,11 +1161,23 @@ const struct pmu *hw_perf_event_init(struct perf_event *event) } event->destroy = hw_perf_event_destroy; - if (err) - return ERR_PTR(err); - return &power_pmu; + return err; } +struct pmu power_pmu = { + .pmu_enable = power_pmu_enable, + .pmu_disable = power_pmu_disable, + .event_init = power_pmu_event_init, + .add = power_pmu_add, + .del = power_pmu_del, + .start = power_pmu_start, + .stop = power_pmu_stop, + .read = power_pmu_read, + .start_txn = power_pmu_start_txn, + .cancel_txn = power_pmu_cancel_txn, + .commit_txn = power_pmu_commit_txn, +}; + /* * A counter has overflowed; update its count and record * things if requested. Note that interrupts are hard-disabled @@ -1149,6 +1190,11 @@ static void record_and_restart(struct perf_event *event, unsigned long val, s64 prev, delta, left; int record = 0; + if (event->hw.state & PERF_HES_STOPPED) { + write_pmc(event->hw.idx, 0); + return; + } + /* we don't have to worry about interrupts here */ prev = local64_read(&event->hw.prev_count); delta = (val - prev) & 0xfffffffful; @@ -1171,6 +1217,11 @@ static void record_and_restart(struct perf_event *event, unsigned long val, val = 0x80000000LL - left; } + write_pmc(event->hw.idx, val); + local64_set(&event->hw.prev_count, val); + local64_set(&event->hw.period_left, left); + perf_event_update_userpage(event); + /* * Finally record data if requested. */ @@ -1183,23 +1234,9 @@ static void record_and_restart(struct perf_event *event, unsigned long val, if (event->attr.sample_type & PERF_SAMPLE_ADDR) perf_get_data_addr(regs, &data.addr); - if (perf_event_overflow(event, nmi, &data, regs)) { - /* - * Interrupts are coming too fast - throttle them - * by setting the event to 0, so it will be - * at least 2^30 cycles until the next interrupt - * (assuming each event counts at most 2 counts - * per cycle). - */ - val = 0; - left = ~0ULL >> 1; - } + if (perf_event_overflow(event, nmi, &data, regs)) + power_pmu_stop(event, 0); } - - write_pmc(event->hw.idx, val); - local64_set(&event->hw.prev_count, val); - local64_set(&event->hw.period_left, left); - perf_event_update_userpage(event); } /* @@ -1342,6 +1379,7 @@ int register_power_pmu(struct power_pmu *pmu) freeze_events_kernel = MMCR0_FCHV; #endif /* CONFIG_PPC64 */ + perf_pmu_register(&power_pmu); perf_cpu_notifier(power_pmu_notifier); return 0; diff --git a/arch/powerpc/kernel/perf_event_fsl_emb.c b/arch/powerpc/kernel/perf_event_fsl_emb.c index 1ba45471ae43..7ecca59ddf77 100644 --- a/arch/powerpc/kernel/perf_event_fsl_emb.c +++ b/arch/powerpc/kernel/perf_event_fsl_emb.c @@ -156,6 +156,9 @@ static void fsl_emb_pmu_read(struct perf_event *event) { s64 val, delta, prev; + if (event->hw.state & PERF_HES_STOPPED) + return; + /* * Performance monitor interrupts come even when interrupts * are soft-disabled, as long as interrupts are hard-enabled. @@ -177,7 +180,7 @@ static void fsl_emb_pmu_read(struct perf_event *event) * Disable all events to prevent PMU interrupts and to allow * events to be added or removed. */ -void hw_perf_disable(void) +static void fsl_emb_pmu_disable(struct pmu *pmu) { struct cpu_hw_events *cpuhw; unsigned long flags; @@ -216,7 +219,7 @@ void hw_perf_disable(void) * If we were previously disabled and events were added, then * put the new config on the PMU. */ -void hw_perf_enable(void) +static void fsl_emb_pmu_enable(struct pmu *pmu) { struct cpu_hw_events *cpuhw; unsigned long flags; @@ -262,8 +265,8 @@ static int collect_events(struct perf_event *group, int max_count, return n; } -/* perf must be disabled, context locked on entry */ -static int fsl_emb_pmu_enable(struct perf_event *event) +/* context locked on entry */ +static int fsl_emb_pmu_add(struct perf_event *event, int flags) { struct cpu_hw_events *cpuhw; int ret = -EAGAIN; @@ -271,6 +274,7 @@ static int fsl_emb_pmu_enable(struct perf_event *event) u64 val; int i; + perf_pmu_disable(event->pmu); cpuhw = &get_cpu_var(cpu_hw_events); if (event->hw.config & FSL_EMB_EVENT_RESTRICTED) @@ -301,6 +305,12 @@ static int fsl_emb_pmu_enable(struct perf_event *event) val = 0x80000000L - left; } local64_set(&event->hw.prev_count, val); + + if (!(flags & PERF_EF_START)) { + event->hw.state = PERF_HES_STOPPED | PERF_HES_UPTODATE; + val = 0; + } + write_pmc(i, val); perf_event_update_userpage(event); @@ -310,15 +320,17 @@ static int fsl_emb_pmu_enable(struct perf_event *event) ret = 0; out: put_cpu_var(cpu_hw_events); + perf_pmu_enable(event->pmu); return ret; } -/* perf must be disabled, context locked on entry */ -static void fsl_emb_pmu_disable(struct perf_event *event) +/* context locked on entry */ +static void fsl_emb_pmu_del(struct perf_event *event, int flags) { struct cpu_hw_events *cpuhw; int i = event->hw.idx; + perf_pmu_disable(event->pmu); if (i < 0) goto out; @@ -346,44 +358,57 @@ static void fsl_emb_pmu_disable(struct perf_event *event) cpuhw->n_events--; out: + perf_pmu_enable(event->pmu); put_cpu_var(cpu_hw_events); } -/* - * Re-enable interrupts on a event after they were throttled - * because they were coming too fast. - * - * Context is locked on entry, but perf is not disabled. - */ -static void fsl_emb_pmu_unthrottle(struct perf_event *event) +static void fsl_emb_pmu_start(struct perf_event *event, int ef_flags) { - s64 val, left; unsigned long flags; + s64 left; if (event->hw.idx < 0 || !event->hw.sample_period) return; + + if (!(event->hw.state & PERF_HES_STOPPED)) + return; + + if (ef_flags & PERF_EF_RELOAD) + WARN_ON_ONCE(!(event->hw.state & PERF_HES_UPTODATE)); + local_irq_save(flags); - perf_disable(); - fsl_emb_pmu_read(event); - left = event->hw.sample_period; - event->hw.last_period = left; - val = 0; - if (left < 0x80000000L) - val = 0x80000000L - left; - write_pmc(event->hw.idx, val); - local64_set(&event->hw.prev_count, val); - local64_set(&event->hw.period_left, left); + perf_pmu_disable(event->pmu); + + event->hw.state = 0; + left = local64_read(&event->hw.period_left); + write_pmc(event->hw.idx, left); + perf_event_update_userpage(event); - perf_enable(); + perf_pmu_enable(event->pmu); local_irq_restore(flags); } -static struct pmu fsl_emb_pmu = { - .enable = fsl_emb_pmu_enable, - .disable = fsl_emb_pmu_disable, - .read = fsl_emb_pmu_read, - .unthrottle = fsl_emb_pmu_unthrottle, -}; +static void fsl_emb_pmu_stop(struct perf_event *event, int ef_flags) +{ + unsigned long flags; + + if (event->hw.idx < 0 || !event->hw.sample_period) + return; + + if (event->hw.state & PERF_HES_STOPPED) + return; + + local_irq_save(flags); + perf_pmu_disable(event->pmu); + + fsl_emb_pmu_read(event); + event->hw.state |= PERF_HES_STOPPED | PERF_HES_UPTODATE; + write_pmc(event->hw.idx, 0); + + perf_event_update_userpage(event); + perf_pmu_enable(event->pmu); + local_irq_restore(flags); +} /* * Release the PMU if this is the last perf_event. @@ -428,7 +453,7 @@ static int hw_perf_cache_event(u64 config, u64 *eventp) return 0; } -const struct pmu *hw_perf_event_init(struct perf_event *event) +static int fsl_emb_pmu_event_init(struct perf_event *event) { u64 ev; struct perf_event *events[MAX_HWEVENTS]; @@ -441,14 +466,14 @@ const struct pmu *hw_perf_event_init(struct perf_event *event) case PERF_TYPE_HARDWARE: ev = event->attr.config; if (ev >= ppmu->n_generic || ppmu->generic_events[ev] == 0) - return ERR_PTR(-EOPNOTSUPP); + return -EOPNOTSUPP; ev = ppmu->generic_events[ev]; break; case PERF_TYPE_HW_CACHE: err = hw_perf_cache_event(event->attr.config, &ev); if (err) - return ERR_PTR(err); + return err; break; case PERF_TYPE_RAW: @@ -456,12 +481,12 @@ const struct pmu *hw_perf_event_init(struct perf_event *event) break; default: - return ERR_PTR(-EINVAL); + return -ENOENT; } event->hw.config = ppmu->xlate_event(ev); if (!(event->hw.config & FSL_EMB_EVENT_VALID)) - return ERR_PTR(-EINVAL); + return -EINVAL; /* * If this is in a group, check if it can go on with all the @@ -473,7 +498,7 @@ const struct pmu *hw_perf_event_init(struct perf_event *event) n = collect_events(event->group_leader, ppmu->n_counter - 1, events); if (n < 0) - return ERR_PTR(-EINVAL); + return -EINVAL; } if (event->hw.config & FSL_EMB_EVENT_RESTRICTED) { @@ -484,7 +509,7 @@ const struct pmu *hw_perf_event_init(struct perf_event *event) } if (num_restricted >= ppmu->n_restricted) - return ERR_PTR(-EINVAL); + return -EINVAL; } event->hw.idx = -1; @@ -497,7 +522,7 @@ const struct pmu *hw_perf_event_init(struct perf_event *event) if (event->attr.exclude_kernel) event->hw.config_base |= PMLCA_FCS; if (event->attr.exclude_idle) - return ERR_PTR(-ENOTSUPP); + return -ENOTSUPP; event->hw.last_period = event->hw.sample_period; local64_set(&event->hw.period_left, event->hw.last_period); @@ -523,11 +548,20 @@ const struct pmu *hw_perf_event_init(struct perf_event *event) } event->destroy = hw_perf_event_destroy; - if (err) - return ERR_PTR(err); - return &fsl_emb_pmu; + return err; } +static struct pmu fsl_emb_pmu = { + .pmu_enable = fsl_emb_pmu_enable, + .pmu_disable = fsl_emb_pmu_disable, + .event_init = fsl_emb_pmu_event_init, + .add = fsl_emb_pmu_add, + .del = fsl_emb_pmu_del, + .start = fsl_emb_pmu_start, + .stop = fsl_emb_pmu_stop, + .read = fsl_emb_pmu_read, +}; + /* * A counter has overflowed; update its count and record * things if requested. Note that interrupts are hard-disabled @@ -540,6 +574,11 @@ static void record_and_restart(struct perf_event *event, unsigned long val, s64 prev, delta, left; int record = 0; + if (event->hw.state & PERF_HES_STOPPED) { + write_pmc(event->hw.idx, 0); + return; + } + /* we don't have to worry about interrupts here */ prev = local64_read(&event->hw.prev_count); delta = (val - prev) & 0xfffffffful; @@ -562,6 +601,11 @@ static void record_and_restart(struct perf_event *event, unsigned long val, val = 0x80000000LL - left; } + write_pmc(event->hw.idx, val); + local64_set(&event->hw.prev_count, val); + local64_set(&event->hw.period_left, left); + perf_event_update_userpage(event); + /* * Finally record data if requested. */ @@ -571,23 +615,9 @@ static void record_and_restart(struct perf_event *event, unsigned long val, perf_sample_data_init(&data, 0); data.period = event->hw.last_period; - if (perf_event_overflow(event, nmi, &data, regs)) { - /* - * Interrupts are coming too fast - throttle them - * by setting the event to 0, so it will be - * at least 2^30 cycles until the next interrupt - * (assuming each event counts at most 2 counts - * per cycle). - */ - val = 0; - left = ~0ULL >> 1; - } + if (perf_event_overflow(event, nmi, &data, regs)) + fsl_emb_pmu_stop(event, 0); } - - write_pmc(event->hw.idx, val); - local64_set(&event->hw.prev_count, val); - local64_set(&event->hw.period_left, left); - perf_event_update_userpage(event); } static void perf_event_interrupt(struct pt_regs *regs) @@ -651,5 +681,7 @@ int register_fsl_emb_pmu(struct fsl_emb_pmu *pmu) pr_info("%s performance monitor hardware support registered\n", pmu->name); + perf_pmu_register(&fsl_emb_pmu); + return 0; } diff --git a/arch/powerpc/kernel/time.c b/arch/powerpc/kernel/time.c index 8533b3b83f5d..54888eb10c3b 100644 --- a/arch/powerpc/kernel/time.c +++ b/arch/powerpc/kernel/time.c @@ -53,7 +53,7 @@ #include <linux/posix-timers.h> #include <linux/irq.h> #include <linux/delay.h> -#include <linux/perf_event.h> +#include <linux/irq_work.h> #include <asm/trace.h> #include <asm/io.h> @@ -493,60 +493,60 @@ void __init iSeries_time_init_early(void) } #endif /* CONFIG_PPC_ISERIES */ -#ifdef CONFIG_PERF_EVENTS +#ifdef CONFIG_IRQ_WORK /* * 64-bit uses a byte in the PACA, 32-bit uses a per-cpu variable... */ #ifdef CONFIG_PPC64 -static inline unsigned long test_perf_event_pending(void) +static inline unsigned long test_irq_work_pending(void) { unsigned long x; asm volatile("lbz %0,%1(13)" : "=r" (x) - : "i" (offsetof(struct paca_struct, perf_event_pending))); + : "i" (offsetof(struct paca_struct, irq_work_pending))); return x; } -static inline void set_perf_event_pending_flag(void) +static inline void set_irq_work_pending_flag(void) { asm volatile("stb %0,%1(13)" : : "r" (1), - "i" (offsetof(struct paca_struct, perf_event_pending))); + "i" (offsetof(struct paca_struct, irq_work_pending))); } -static inline void clear_perf_event_pending(void) +static inline void clear_irq_work_pending(void) { asm volatile("stb %0,%1(13)" : : "r" (0), - "i" (offsetof(struct paca_struct, perf_event_pending))); + "i" (offsetof(struct paca_struct, irq_work_pending))); } #else /* 32-bit */ -DEFINE_PER_CPU(u8, perf_event_pending); +DEFINE_PER_CPU(u8, irq_work_pending); -#define set_perf_event_pending_flag() __get_cpu_var(perf_event_pending) = 1 -#define test_perf_event_pending() __get_cpu_var(perf_event_pending) -#define clear_perf_event_pending() __get_cpu_var(perf_event_pending) = 0 +#define set_irq_work_pending_flag() __get_cpu_var(irq_work_pending) = 1 +#define test_irq_work_pending() __get_cpu_var(irq_work_pending) +#define clear_irq_work_pending() __get_cpu_var(irq_work_pending) = 0 #endif /* 32 vs 64 bit */ -void set_perf_event_pending(void) +void set_irq_work_pending(void) { preempt_disable(); - set_perf_event_pending_flag(); + set_irq_work_pending_flag(); set_dec(1); preempt_enable(); } -#else /* CONFIG_PERF_EVENTS */ +#else /* CONFIG_IRQ_WORK */ -#define test_perf_event_pending() 0 -#define clear_perf_event_pending() +#define test_irq_work_pending() 0 +#define clear_irq_work_pending() -#endif /* CONFIG_PERF_EVENTS */ +#endif /* CONFIG_IRQ_WORK */ /* * For iSeries shared processors, we have to let the hypervisor @@ -587,9 +587,9 @@ void timer_interrupt(struct pt_regs * regs) calculate_steal_time(); - if (test_perf_event_pending()) { - clear_perf_event_pending(); - perf_event_do_pending(); + if (test_irq_work_pending()) { + clear_irq_work_pending(); + irq_work_run(); } #ifdef CONFIG_PPC_ISERIES diff --git a/arch/powerpc/platforms/cell/axon_msi.c b/arch/powerpc/platforms/cell/axon_msi.c index 97085530aa63..e3e379c6caa7 100644 --- a/arch/powerpc/platforms/cell/axon_msi.c +++ b/arch/powerpc/platforms/cell/axon_msi.c @@ -310,9 +310,9 @@ static void axon_msi_teardown_msi_irqs(struct pci_dev *dev) } static struct irq_chip msic_irq_chip = { - .mask = mask_msi_irq, - .unmask = unmask_msi_irq, - .shutdown = unmask_msi_irq, + .irq_mask = mask_msi_irq, + .irq_unmask = unmask_msi_irq, + .irq_shutdown = mask_msi_irq, .name = "AXON-MSI", }; diff --git a/arch/powerpc/platforms/pseries/xics.c b/arch/powerpc/platforms/pseries/xics.c index 93834b0d8272..67e2c4bdac8f 100644 --- a/arch/powerpc/platforms/pseries/xics.c +++ b/arch/powerpc/platforms/pseries/xics.c @@ -243,7 +243,7 @@ static unsigned int xics_startup(unsigned int virq) * at that level, so we do it here by hand. */ if (irq_to_desc(virq)->msi_desc) - unmask_msi_irq(virq); + unmask_msi_irq(irq_get_irq_data(virq)); /* unmask it */ xics_unmask_irq(virq); diff --git a/arch/powerpc/sysdev/fsl_msi.c b/arch/powerpc/sysdev/fsl_msi.c index 87991d3abbab..bdbd896c89d8 100644 --- a/arch/powerpc/sysdev/fsl_msi.c +++ b/arch/powerpc/sysdev/fsl_msi.c @@ -51,8 +51,8 @@ static void fsl_msi_end_irq(unsigned int virq) } static struct irq_chip fsl_msi_chip = { - .mask = mask_msi_irq, - .unmask = unmask_msi_irq, + .irq_mask = mask_msi_irq, + .irq_unmask = unmask_msi_irq, .ack = fsl_msi_end_irq, .name = "FSL-MSI", }; diff --git a/arch/powerpc/sysdev/mpic_pasemi_msi.c b/arch/powerpc/sysdev/mpic_pasemi_msi.c index 3b6a9a43718f..320ad5a9a25d 100644 --- a/arch/powerpc/sysdev/mpic_pasemi_msi.c +++ b/arch/powerpc/sysdev/mpic_pasemi_msi.c @@ -39,24 +39,24 @@ static struct mpic *msi_mpic; -static void mpic_pasemi_msi_mask_irq(unsigned int irq) +static void mpic_pasemi_msi_mask_irq(struct irq_data *data) { - pr_debug("mpic_pasemi_msi_mask_irq %d\n", irq); - mask_msi_irq(irq); - mpic_mask_irq(irq); + pr_debug("mpic_pasemi_msi_mask_irq %d\n", data->irq); + mask_msi_irq(data); + mpic_mask_irq(data->irq); } -static void mpic_pasemi_msi_unmask_irq(unsigned int irq) +static void mpic_pasemi_msi_unmask_irq(struct irq_data *data) { - pr_debug("mpic_pasemi_msi_unmask_irq %d\n", irq); - mpic_unmask_irq(irq); - unmask_msi_irq(irq); + pr_debug("mpic_pasemi_msi_unmask_irq %d\n", data->irq); + mpic_unmask_irq(data->irq); + unmask_msi_irq(data); } static struct irq_chip mpic_pasemi_msi_chip = { - .shutdown = mpic_pasemi_msi_mask_irq, - .mask = mpic_pasemi_msi_mask_irq, - .unmask = mpic_pasemi_msi_unmask_irq, + .irq_shutdown = mpic_pasemi_msi_mask_irq, + .irq_mask = mpic_pasemi_msi_mask_irq, + .irq_unmask = mpic_pasemi_msi_unmask_irq, .eoi = mpic_end_irq, .set_type = mpic_set_irq_type, .set_affinity = mpic_set_affinity, diff --git a/arch/powerpc/sysdev/mpic_u3msi.c b/arch/powerpc/sysdev/mpic_u3msi.c index bcbfe79c704b..a2b028b4a202 100644 --- a/arch/powerpc/sysdev/mpic_u3msi.c +++ b/arch/powerpc/sysdev/mpic_u3msi.c @@ -23,22 +23,22 @@ /* A bit ugly, can we get this from the pci_dev somehow? */ static struct mpic *msi_mpic; -static void mpic_u3msi_mask_irq(unsigned int irq) +static void mpic_u3msi_mask_irq(struct irq_data *data) { - mask_msi_irq(irq); - mpic_mask_irq(irq); + mask_msi_irq(data); + mpic_mask_irq(data->irq); } -static void mpic_u3msi_unmask_irq(unsigned int irq) +static void mpic_u3msi_unmask_irq(struct irq_data *data) { - mpic_unmask_irq(irq); - unmask_msi_irq(irq); + mpic_unmask_irq(data->irq); + unmask_msi_irq(data); } static struct irq_chip mpic_u3msi_chip = { - .shutdown = mpic_u3msi_mask_irq, - .mask = mpic_u3msi_mask_irq, - .unmask = mpic_u3msi_unmask_irq, + .irq_shutdown = mpic_u3msi_mask_irq, + .irq_mask = mpic_u3msi_mask_irq, + .irq_unmask = mpic_u3msi_unmask_irq, .eoi = mpic_end_irq, .set_type = mpic_set_irq_type, .set_affinity = mpic_set_affinity, diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig index f0777a47e3a5..75976a141947 100644 --- a/arch/s390/Kconfig +++ b/arch/s390/Kconfig @@ -95,6 +95,7 @@ config S390 select HAVE_KVM if 64BIT select HAVE_ARCH_TRACEHOOK select INIT_ALL_POSSIBLE + select HAVE_IRQ_WORK select HAVE_PERF_EVENTS select HAVE_KERNEL_GZIP select HAVE_KERNEL_BZIP2 @@ -198,6 +199,13 @@ config HOTPLUG_CPU can be controlled through /sys/devices/system/cpu/cpu#. Say N if you want to disable CPU hotplug. +config SCHED_BOOK + bool "Book scheduler support" + depends on SMP + help + Book scheduler support improves the CPU scheduler's decision making + when dealing with machines that have several books. + config MATHEMU bool "IEEE FPU emulation" depends on MARCH_G5 diff --git a/arch/s390/include/asm/hardirq.h b/arch/s390/include/asm/hardirq.h index 498bc3892385..881d94590aeb 100644 --- a/arch/s390/include/asm/hardirq.h +++ b/arch/s390/include/asm/hardirq.h @@ -12,10 +12,6 @@ #ifndef __ASM_HARDIRQ_H #define __ASM_HARDIRQ_H -#include <linux/threads.h> -#include <linux/sched.h> -#include <linux/cache.h> -#include <linux/interrupt.h> #include <asm/lowcore.h> #define local_softirq_pending() (S390_lowcore.softirq_pending) diff --git a/arch/s390/include/asm/irqflags.h b/arch/s390/include/asm/irqflags.h index 15b3ac253898..865d6d891ace 100644 --- a/arch/s390/include/asm/irqflags.h +++ b/arch/s390/include/asm/irqflags.h @@ -8,8 +8,8 @@ #include <linux/types.h> -/* store then or system mask. */ -#define __raw_local_irq_stosm(__or) \ +/* store then OR system mask. */ +#define __arch_local_irq_stosm(__or) \ ({ \ unsigned long __mask; \ asm volatile( \ @@ -18,8 +18,8 @@ __mask; \ }) -/* store then and system mask. */ -#define __raw_local_irq_stnsm(__and) \ +/* store then AND system mask. */ +#define __arch_local_irq_stnsm(__and) \ ({ \ unsigned long __mask; \ asm volatile( \ @@ -29,39 +29,44 @@ }) /* set system mask. */ -#define __raw_local_irq_ssm(__mask) \ -({ \ - asm volatile("ssm %0" : : "Q" (__mask) : "memory"); \ -}) +static inline void __arch_local_irq_ssm(unsigned long flags) +{ + asm volatile("ssm %0" : : "Q" (flags) : "memory"); +} -/* interrupt control.. */ -static inline unsigned long raw_local_irq_enable(void) +static inline unsigned long arch_local_save_flags(void) { - return __raw_local_irq_stosm(0x03); + return __arch_local_irq_stosm(0x00); } -static inline unsigned long raw_local_irq_disable(void) +static inline unsigned long arch_local_irq_save(void) { - return __raw_local_irq_stnsm(0xfc); + return __arch_local_irq_stnsm(0xfc); } -#define raw_local_save_flags(x) \ -do { \ - typecheck(unsigned long, x); \ - (x) = __raw_local_irq_stosm(0x00); \ -} while (0) +static inline void arch_local_irq_disable(void) +{ + arch_local_irq_save(); +} -static inline void raw_local_irq_restore(unsigned long flags) +static inline void arch_local_irq_enable(void) { - __raw_local_irq_ssm(flags); + __arch_local_irq_stosm(0x03); } -static inline int raw_irqs_disabled_flags(unsigned long flags) +static inline void arch_local_irq_restore(unsigned long flags) +{ + __arch_local_irq_ssm(flags); +} + +static inline bool arch_irqs_disabled_flags(unsigned long flags) { return !(flags & (3UL << (BITS_PER_LONG - 8))); } -/* For spinlocks etc */ -#define raw_local_irq_save(x) ((x) = raw_local_irq_disable()) +static inline bool arch_irqs_disabled(void) +{ + return arch_irqs_disabled_flags(arch_local_save_flags()); +} #endif /* __ASM_IRQFLAGS_H */ diff --git a/arch/s390/include/asm/perf_event.h b/arch/s390/include/asm/perf_event.h index 3840cbe77637..a75f168d2718 100644 --- a/arch/s390/include/asm/perf_event.h +++ b/arch/s390/include/asm/perf_event.h @@ -4,7 +4,6 @@ * Copyright 2009 Martin Schwidefsky, IBM Corporation. */ -static inline void set_perf_event_pending(void) {} -static inline void clear_perf_event_pending(void) {} +/* Empty, just to avoid compiling error */ #define PERF_EVENT_INDEX_OFFSET 0 diff --git a/arch/s390/include/asm/system.h b/arch/s390/include/asm/system.h index cef66210c846..1f2ebc4afd82 100644 --- a/arch/s390/include/asm/system.h +++ b/arch/s390/include/asm/system.h @@ -97,7 +97,6 @@ static inline void restore_access_regs(unsigned int *acrs) extern void account_vtime(struct task_struct *, struct task_struct *); extern void account_tick_vtime(struct task_struct *); -extern void account_system_vtime(struct task_struct *); #ifdef CONFIG_PFAULT extern void pfault_irq_init(void); @@ -399,7 +398,7 @@ static inline unsigned long __cmpxchg_local(volatile void *ptr, static inline void __set_psw_mask(unsigned long mask) { - __load_psw_mask(mask | (__raw_local_irq_stosm(0x00) & ~(-1UL >> 8))); + __load_psw_mask(mask | (arch_local_save_flags() & ~(-1UL >> 8))); } #define local_mcck_enable() __set_psw_mask(psw_kernel_bits) diff --git a/arch/s390/include/asm/topology.h b/arch/s390/include/asm/topology.h index 831bd033ea77..051107a2c5e2 100644 --- a/arch/s390/include/asm/topology.h +++ b/arch/s390/include/asm/topology.h @@ -3,15 +3,32 @@ #include <linux/cpumask.h> -#define mc_capable() (1) - -const struct cpumask *cpu_coregroup_mask(unsigned int cpu); - extern unsigned char cpu_core_id[NR_CPUS]; extern cpumask_t cpu_core_map[NR_CPUS]; +static inline const struct cpumask *cpu_coregroup_mask(unsigned int cpu) +{ + return &cpu_core_map[cpu]; +} + #define topology_core_id(cpu) (cpu_core_id[cpu]) #define topology_core_cpumask(cpu) (&cpu_core_map[cpu]) +#define mc_capable() (1) + +#ifdef CONFIG_SCHED_BOOK + +extern unsigned char cpu_book_id[NR_CPUS]; +extern cpumask_t cpu_book_map[NR_CPUS]; + +static inline const struct cpumask *cpu_book_mask(unsigned int cpu) +{ + return &cpu_book_map[cpu]; +} + +#define topology_book_id(cpu) (cpu_book_id[cpu]) +#define topology_book_cpumask(cpu) (&cpu_book_map[cpu]) + +#endif /* CONFIG_SCHED_BOOK */ int topology_set_cpu_management(int fc); void topology_schedule_update(void); @@ -30,6 +47,8 @@ static inline void s390_init_cpu_topology(void) }; #endif +#define SD_BOOK_INIT SD_CPU_INIT + #include <asm-generic/topology.h> #endif /* _ASM_S390_TOPOLOGY_H */ diff --git a/arch/s390/kernel/mem_detect.c b/arch/s390/kernel/mem_detect.c index 559af0d07878..0fbe4e32f7ba 100644 --- a/arch/s390/kernel/mem_detect.c +++ b/arch/s390/kernel/mem_detect.c @@ -54,11 +54,11 @@ void detect_memory_layout(struct mem_chunk chunk[]) * right thing and we don't get scheduled away with low address * protection disabled. */ - flags = __raw_local_irq_stnsm(0xf8); + flags = __arch_local_irq_stnsm(0xf8); __ctl_store(cr0, 0, 0); __ctl_clear_bit(0, 28); find_memory_chunks(chunk); __ctl_load(cr0, 0, 0); - __raw_local_irq_ssm(flags); + arch_local_irq_restore(flags); } EXPORT_SYMBOL(detect_memory_layout); diff --git a/arch/s390/kernel/topology.c b/arch/s390/kernel/topology.c index bcef00766a64..13559c993847 100644 --- a/arch/s390/kernel/topology.c +++ b/arch/s390/kernel/topology.c @@ -57,8 +57,8 @@ struct tl_info { union tl_entry tle[0]; }; -struct core_info { - struct core_info *next; +struct mask_info { + struct mask_info *next; unsigned char id; cpumask_t mask; }; @@ -66,7 +66,6 @@ struct core_info { static int topology_enabled; static void topology_work_fn(struct work_struct *work); static struct tl_info *tl_info; -static struct core_info core_info; static int machine_has_topology; static struct timer_list topology_timer; static void set_topology_timer(void); @@ -74,38 +73,37 @@ static DECLARE_WORK(topology_work, topology_work_fn); /* topology_lock protects the core linked list */ static DEFINE_SPINLOCK(topology_lock); +static struct mask_info core_info; cpumask_t cpu_core_map[NR_CPUS]; unsigned char cpu_core_id[NR_CPUS]; -static cpumask_t cpu_coregroup_map(unsigned int cpu) +#ifdef CONFIG_SCHED_BOOK +static struct mask_info book_info; +cpumask_t cpu_book_map[NR_CPUS]; +unsigned char cpu_book_id[NR_CPUS]; +#endif + +static cpumask_t cpu_group_map(struct mask_info *info, unsigned int cpu) { - struct core_info *core = &core_info; - unsigned long flags; cpumask_t mask; cpus_clear(mask); if (!topology_enabled || !machine_has_topology) return cpu_possible_map; - spin_lock_irqsave(&topology_lock, flags); - while (core) { - if (cpu_isset(cpu, core->mask)) { - mask = core->mask; + while (info) { + if (cpu_isset(cpu, info->mask)) { + mask = info->mask; break; } - core = core->next; + info = info->next; } - spin_unlock_irqrestore(&topology_lock, flags); if (cpus_empty(mask)) mask = cpumask_of_cpu(cpu); return mask; } -const struct cpumask *cpu_coregroup_mask(unsigned int cpu) -{ - return &cpu_core_map[cpu]; -} - -static void add_cpus_to_core(struct tl_cpu *tl_cpu, struct core_info *core) +static void add_cpus_to_mask(struct tl_cpu *tl_cpu, struct mask_info *book, + struct mask_info *core) { unsigned int cpu; @@ -117,23 +115,35 @@ static void add_cpus_to_core(struct tl_cpu *tl_cpu, struct core_info *core) rcpu = CPU_BITS - 1 - cpu + tl_cpu->origin; for_each_present_cpu(lcpu) { - if (cpu_logical_map(lcpu) == rcpu) { - cpu_set(lcpu, core->mask); - cpu_core_id[lcpu] = core->id; - smp_cpu_polarization[lcpu] = tl_cpu->pp; - } + if (cpu_logical_map(lcpu) != rcpu) + continue; +#ifdef CONFIG_SCHED_BOOK + cpu_set(lcpu, book->mask); + cpu_book_id[lcpu] = book->id; +#endif + cpu_set(lcpu, core->mask); + cpu_core_id[lcpu] = core->id; + smp_cpu_polarization[lcpu] = tl_cpu->pp; } } } -static void clear_cores(void) +static void clear_masks(void) { - struct core_info *core = &core_info; + struct mask_info *info; - while (core) { - cpus_clear(core->mask); - core = core->next; + info = &core_info; + while (info) { + cpus_clear(info->mask); + info = info->next; + } +#ifdef CONFIG_SCHED_BOOK + info = &book_info; + while (info) { + cpus_clear(info->mask); + info = info->next; } +#endif } static union tl_entry *next_tle(union tl_entry *tle) @@ -146,29 +156,36 @@ static union tl_entry *next_tle(union tl_entry *tle) static void tl_to_cores(struct tl_info *info) { +#ifdef CONFIG_SCHED_BOOK + struct mask_info *book = &book_info; +#else + struct mask_info *book = NULL; +#endif + struct mask_info *core = &core_info; union tl_entry *tle, *end; - struct core_info *core = &core_info; + spin_lock_irq(&topology_lock); - clear_cores(); + clear_masks(); tle = info->tle; end = (union tl_entry *)((unsigned long)info + info->length); while (tle < end) { switch (tle->nl) { - case 5: - case 4: - case 3: +#ifdef CONFIG_SCHED_BOOK case 2: + book = book->next; + book->id = tle->container.id; break; +#endif case 1: core = core->next; core->id = tle->container.id; break; case 0: - add_cpus_to_core(&tle->cpu, core); + add_cpus_to_mask(&tle->cpu, book, core); break; default: - clear_cores(); + clear_masks(); machine_has_topology = 0; goto out; } @@ -221,10 +238,29 @@ int topology_set_cpu_management(int fc) static void update_cpu_core_map(void) { + unsigned long flags; int cpu; - for_each_possible_cpu(cpu) - cpu_core_map[cpu] = cpu_coregroup_map(cpu); + spin_lock_irqsave(&topology_lock, flags); + for_each_possible_cpu(cpu) { + cpu_core_map[cpu] = cpu_group_map(&core_info, cpu); +#ifdef CONFIG_SCHED_BOOK + cpu_book_map[cpu] = cpu_group_map(&book_info, cpu); +#endif + } + spin_unlock_irqrestore(&topology_lock, flags); +} + +static void store_topology(struct tl_info *info) +{ +#ifdef CONFIG_SCHED_BOOK + int rc; + + rc = stsi(info, 15, 1, 3); + if (rc != -ENOSYS) + return; +#endif + stsi(info, 15, 1, 2); } int arch_update_cpu_topology(void) @@ -238,7 +274,7 @@ int arch_update_cpu_topology(void) topology_update_polarization_simple(); return 0; } - stsi(info, 15, 1, 2); + store_topology(info); tl_to_cores(info); update_cpu_core_map(); for_each_online_cpu(cpu) { @@ -299,12 +335,24 @@ out: } __initcall(init_topology_update); +static void alloc_masks(struct tl_info *info, struct mask_info *mask, int offset) +{ + int i, nr_masks; + + nr_masks = info->mag[NR_MAG - offset]; + for (i = 0; i < info->mnest - offset; i++) + nr_masks *= info->mag[NR_MAG - offset - 1 - i]; + nr_masks = max(nr_masks, 1); + for (i = 0; i < nr_masks; i++) { + mask->next = alloc_bootmem(sizeof(struct mask_info)); + mask = mask->next; + } +} + void __init s390_init_cpu_topology(void) { unsigned long long facility_bits; struct tl_info *info; - struct core_info *core; - int nr_cores; int i; if (stfle(&facility_bits, 1) <= 0) @@ -315,25 +363,13 @@ void __init s390_init_cpu_topology(void) tl_info = alloc_bootmem_pages(PAGE_SIZE); info = tl_info; - stsi(info, 15, 1, 2); - - nr_cores = info->mag[NR_MAG - 2]; - for (i = 0; i < info->mnest - 2; i++) - nr_cores *= info->mag[NR_MAG - 3 - i]; - + store_topology(info); pr_info("The CPU configuration topology of the machine is:"); for (i = 0; i < NR_MAG; i++) printk(" %d", info->mag[i]); printk(" / %d\n", info->mnest); - - core = &core_info; - for (i = 0; i < nr_cores; i++) { - core->next = alloc_bootmem(sizeof(struct core_info)); - core = core->next; - if (!core) - goto error; - } - return; -error: - machine_has_topology = 0; + alloc_masks(info, &core_info, 2); +#ifdef CONFIG_SCHED_BOOK + alloc_masks(info, &book_info, 3); +#endif } diff --git a/arch/s390/mm/init.c b/arch/s390/mm/init.c index 30eb6d02ddb8..94b8ba2ec857 100644 --- a/arch/s390/mm/init.c +++ b/arch/s390/mm/init.c @@ -50,7 +50,6 @@ EXPORT_SYMBOL(empty_zero_page); */ void __init paging_init(void) { - static const int ssm_mask = 0x04000000L; unsigned long max_zone_pfns[MAX_NR_ZONES]; unsigned long pgd_type; @@ -72,7 +71,7 @@ void __init paging_init(void) __ctl_load(S390_lowcore.kernel_asce, 1, 1); __ctl_load(S390_lowcore.kernel_asce, 7, 7); __ctl_load(S390_lowcore.kernel_asce, 13, 13); - __raw_local_irq_ssm(ssm_mask); + arch_local_irq_restore(4UL << (BITS_PER_LONG - 8)); atomic_set(&init_mm.context.attach_count, 1); diff --git a/arch/s390/mm/maccess.c b/arch/s390/mm/maccess.c index a8c2af8c650f..71a4b0d34be0 100644 --- a/arch/s390/mm/maccess.c +++ b/arch/s390/mm/maccess.c @@ -71,7 +71,7 @@ int memcpy_real(void *dest, void *src, size_t count) if (!count) return 0; - flags = __raw_local_irq_stnsm(0xf8UL); + flags = __arch_local_irq_stnsm(0xf8UL); asm volatile ( "0: mvcle %1,%2,0x0\n" "1: jo 0b\n" @@ -82,6 +82,6 @@ int memcpy_real(void *dest, void *src, size_t count) "+d" (_len2), "=m" (*((long *) dest)) : "m" (*((long *) src)) : "cc", "memory"); - __raw_local_irq_ssm(flags); + arch_local_irq_restore(flags); return rc; } diff --git a/arch/score/include/asm/irqflags.h b/arch/score/include/asm/irqflags.h index 690a6cae7294..5c7563891e28 100644 --- a/arch/score/include/asm/irqflags.h +++ b/arch/score/include/asm/irqflags.h @@ -3,107 +3,118 @@ #ifndef __ASSEMBLY__ -#define raw_local_irq_save(x) \ -{ \ - __asm__ __volatile__( \ - "mfcr r8, cr0;" \ - "li r9, 0xfffffffe;" \ - "nop;" \ - "mv %0, r8;" \ - "and r8, r8, r9;" \ - "mtcr r8, cr0;" \ - "nop;" \ - "nop;" \ - "nop;" \ - "nop;" \ - "nop;" \ - : "=r" (x) \ - : \ - : "r8", "r9" \ - ); \ +#include <linux/types.h> + +static inline unsigned long arch_local_save_flags(void) +{ + unsigned long flags; + + asm volatile( + " mfcr r8, cr0 \n" + " nop \n" + " nop \n" + " mv %0, r8 \n" + " nop \n" + " nop \n" + " nop \n" + " nop \n" + " nop \n" + " ldi r9, 0x1 \n" + " and %0, %0, r9 \n" + : "=r" (flags) + : + : "r8", "r9"); + return flags; } -#define raw_local_irq_restore(x) \ -{ \ - __asm__ __volatile__( \ - "mfcr r8, cr0;" \ - "ldi r9, 0x1;" \ - "and %0, %0, r9;" \ - "or r8, r8, %0;" \ - "mtcr r8, cr0;" \ - "nop;" \ - "nop;" \ - "nop;" \ - "nop;" \ - "nop;" \ - : \ - : "r"(x) \ - : "r8", "r9" \ - ); \ +static inline unsigned long arch_local_irq_save(void) +{ + unsigned long flags + + asm volatile( + " mfcr r8, cr0 \n" + " li r9, 0xfffffffe \n" + " nop \n" + " mv %0, r8 \n" + " and r8, r8, r9 \n" + " mtcr r8, cr0 \n" + " nop \n" + " nop \n" + " nop \n" + " nop \n" + " nop \n" + : "=r" (flags) + : + : "r8", "r9", "memory"); + + return flags; } -#define raw_local_irq_enable(void) \ -{ \ - __asm__ __volatile__( \ - "mfcr\tr8,cr0;" \ - "nop;" \ - "nop;" \ - "ori\tr8,0x1;" \ - "mtcr\tr8,cr0;" \ - "nop;" \ - "nop;" \ - "nop;" \ - "nop;" \ - "nop;" \ - : \ - : \ - : "r8"); \ +static inline void arch_local_irq_restore(unsigned long flags) +{ + asm volatile( + " mfcr r8, cr0 \n" + " ldi r9, 0x1 \n" + " and %0, %0, r9 \n" + " or r8, r8, %0 \n" + " mtcr r8, cr0 \n" + " nop \n" + " nop \n" + " nop \n" + " nop \n" + " nop \n" + : + : "r"(flags) + : "r8", "r9", "memory"); } -#define raw_local_irq_disable(void) \ -{ \ - __asm__ __volatile__( \ - "mfcr\tr8,cr0;" \ - "nop;" \ - "nop;" \ - "srli\tr8,r8,1;" \ - "slli\tr8,r8,1;" \ - "mtcr\tr8,cr0;" \ - "nop;" \ - "nop;" \ - "nop;" \ - "nop;" \ - "nop;" \ - : \ - : \ - : "r8"); \ +static inline void arch_local_irq_enable(void) +{ + asm volatile( + " mfcr r8,cr0 \n" + " nop \n" + " nop \n" + " ori r8,0x1 \n" + " mtcr r8,cr0 \n" + " nop \n" + " nop \n" + " nop \n" + " nop \n" + " nop \n" + : + : + : "r8", "memory"); } -#define raw_local_save_flags(x) \ -{ \ - __asm__ __volatile__( \ - "mfcr r8, cr0;" \ - "nop;" \ - "nop;" \ - "mv %0, r8;" \ - "nop;" \ - "nop;" \ - "nop;" \ - "nop;" \ - "nop;" \ - "ldi r9, 0x1;" \ - "and %0, %0, r9;" \ - : "=r" (x) \ - : \ - : "r8", "r9" \ - ); \ +static inline void arch_local_irq_disable(void) +{ + asm volatile( + " mfcr r8,cr0 \n" + " nop \n" + " nop \n" + " srli r8,r8,1 \n" + " slli r8,r8,1 \n" + " mtcr r8,cr0 \n" + " nop \n" + " nop \n" + " nop \n" + " nop \n" + " nop \n" + : + : + : "r8", "memory"); } -static inline int raw_irqs_disabled_flags(unsigned long flags) +static inline bool arch_irqs_disabled_flags(unsigned long flags) { return !(flags & 1); } -#endif +static inline bool arch_irqs_disabled(void) +{ + return arch_irqs_disabled_flags(arch_local_save_flags()); +} + +#endif /* __ASSEMBLY__ */ #endif /* _ASM_SCORE_IRQFLAGS_H */ diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig index 33990fa95af0..35b6879628a0 100644 --- a/arch/sh/Kconfig +++ b/arch/sh/Kconfig @@ -16,6 +16,7 @@ config SUPERH select HAVE_ARCH_TRACEHOOK select HAVE_DMA_API_DEBUG select HAVE_DMA_ATTRS + select HAVE_IRQ_WORK select HAVE_PERF_EVENTS select PERF_USE_VMALLOC select HAVE_KERNEL_GZIP @@ -249,6 +250,11 @@ config ARCH_SHMOBILE select PM select PM_RUNTIME +config CPU_HAS_PMU + depends on CPU_SH4 || CPU_SH4A + default y + bool + if SUPERH32 choice @@ -738,6 +744,14 @@ config GUSA_RB LLSC, this should be more efficient than the other alternative of disabling interrupts around the atomic sequence. +config HW_PERF_EVENTS + bool "Enable hardware performance counter support for perf events" + depends on PERF_EVENTS && CPU_HAS_PMU + default y + help + Enable hardware performance counter support for perf events. If + disabled, perf events will use software events only. + source "drivers/sh/Kconfig" endmenu diff --git a/arch/sh/include/asm/irqflags.h b/arch/sh/include/asm/irqflags.h index a741153b41c2..43b7608606c3 100644 --- a/arch/sh/include/asm/irqflags.h +++ b/arch/sh/include/asm/irqflags.h @@ -1,8 +1,8 @@ #ifndef __ASM_SH_IRQFLAGS_H #define __ASM_SH_IRQFLAGS_H -#define RAW_IRQ_DISABLED 0xf0 -#define RAW_IRQ_ENABLED 0x00 +#define ARCH_IRQ_DISABLED 0xf0 +#define ARCH_IRQ_ENABLED 0x00 #include <asm-generic/irqflags.h> diff --git a/arch/sh/include/asm/perf_event.h b/arch/sh/include/asm/perf_event.h index 3d0c9f36d150..14308bed7ea5 100644 --- a/arch/sh/include/asm/perf_event.h +++ b/arch/sh/include/asm/perf_event.h @@ -26,11 +26,4 @@ extern int register_sh_pmu(struct sh_pmu *); extern int reserve_pmc_hardware(void); extern void release_pmc_hardware(void); -static inline void set_perf_event_pending(void) -{ - /* Nothing to see here, move along. */ -} - -#define PERF_EVENT_INDEX_OFFSET 0 - #endif /* __ASM_SH_PERF_EVENT_H */ diff --git a/arch/sh/include/asm/syscalls_32.h b/arch/sh/include/asm/syscalls_32.h index be201fdc97aa..ae717e3c26d6 100644 --- a/arch/sh/include/asm/syscalls_32.h +++ b/arch/sh/include/asm/syscalls_32.h @@ -19,9 +19,10 @@ asmlinkage int sys_clone(unsigned long clone_flags, unsigned long newsp, asmlinkage int sys_vfork(unsigned long r4, unsigned long r5, unsigned long r6, unsigned long r7, struct pt_regs __regs); -asmlinkage int sys_execve(const char __user *ufilename, char __user * __user *uargv, - char __user * __user *uenvp, unsigned long r7, - struct pt_regs __regs); +asmlinkage int sys_execve(const char __user *ufilename, + const char __user *const __user *uargv, + const char __user *const __user *uenvp, + unsigned long r7, struct pt_regs __regs); asmlinkage int sys_sigsuspend(old_sigset_t mask, unsigned long r5, unsigned long r6, unsigned long r7, struct pt_regs __regs); diff --git a/arch/sh/kernel/irq.c b/arch/sh/kernel/irq.c index 257de1f0692b..ae5bac39b896 100644 --- a/arch/sh/kernel/irq.c +++ b/arch/sh/kernel/irq.c @@ -290,7 +290,7 @@ void __init init_IRQ(void) int __init arch_probe_nr_irqs(void) { nr_irqs = sh_mv.mv_nr_irqs; - return 0; + return NR_IRQS_LEGACY; } #endif diff --git a/arch/sh/kernel/irq_32.c b/arch/sh/kernel/irq_32.c index e33ab15831f9..e5a755be9129 100644 --- a/arch/sh/kernel/irq_32.c +++ b/arch/sh/kernel/irq_32.c @@ -10,11 +10,11 @@ #include <linux/irqflags.h> #include <linux/module.h> -void notrace raw_local_irq_restore(unsigned long flags) +void notrace arch_local_irq_restore(unsigned long flags) { unsigned long __dummy0, __dummy1; - if (flags == RAW_IRQ_DISABLED) { + if (flags == ARCH_IRQ_DISABLED) { __asm__ __volatile__ ( "stc sr, %0\n\t" "or #0xf0, %0\n\t" @@ -33,14 +33,14 @@ void notrace raw_local_irq_restore(unsigned long flags) #endif "ldc %0, sr\n\t" : "=&r" (__dummy0), "=r" (__dummy1) - : "1" (~RAW_IRQ_DISABLED) + : "1" (~ARCH_IRQ_DISABLED) : "memory" ); } } -EXPORT_SYMBOL(raw_local_irq_restore); +EXPORT_SYMBOL(arch_local_irq_restore); -unsigned long notrace __raw_local_save_flags(void) +unsigned long notrace arch_local_save_flags(void) { unsigned long flags; @@ -54,4 +54,4 @@ unsigned long notrace __raw_local_save_flags(void) return flags; } -EXPORT_SYMBOL(__raw_local_save_flags); +EXPORT_SYMBOL(arch_local_save_flags); diff --git a/arch/sh/kernel/perf_callchain.c b/arch/sh/kernel/perf_callchain.c index a9dd3abde28e..d5ca1ef50fa9 100644 --- a/arch/sh/kernel/perf_callchain.c +++ b/arch/sh/kernel/perf_callchain.c @@ -14,11 +14,6 @@ #include <asm/unwinder.h> #include <asm/ptrace.h> -static inline void callchain_store(struct perf_callchain_entry *entry, u64 ip) -{ - if (entry->nr < PERF_MAX_STACK_DEPTH) - entry->ip[entry->nr++] = ip; -} static void callchain_warning(void *data, char *msg) { @@ -39,7 +34,7 @@ static void callchain_address(void *data, unsigned long addr, int reliable) struct perf_callchain_entry *entry = data; if (reliable) - callchain_store(entry, addr); + perf_callchain_store(entry, addr); } static const struct stacktrace_ops callchain_ops = { @@ -49,47 +44,10 @@ static const struct stacktrace_ops callchain_ops = { .address = callchain_address, }; -static void -perf_callchain_kernel(struct pt_regs *regs, struct perf_callchain_entry *entry) +void +perf_callchain_kernel(struct perf_callchain_entry *entry, struct pt_regs *regs) { - callchain_store(entry, PERF_CONTEXT_KERNEL); - callchain_store(entry, regs->pc); + perf_callchain_store(entry, regs->pc); unwind_stack(NULL, regs, NULL, &callchain_ops, entry); } - -static void -perf_do_callchain(struct pt_regs *regs, struct perf_callchain_entry *entry) -{ - int is_user; - - if (!regs) - return; - - is_user = user_mode(regs); - - if (is_user && current->state != TASK_RUNNING) - return; - - /* - * Only the kernel side is implemented for now. - */ - if (!is_user) - perf_callchain_kernel(regs, entry); -} - -/* - * No need for separate IRQ and NMI entries. - */ -static DEFINE_PER_CPU(struct perf_callchain_entry, callchain); - -struct perf_callchain_entry *perf_callchain(struct pt_regs *regs) -{ - struct perf_callchain_entry *entry = &__get_cpu_var(callchain); - - entry->nr = 0; - - perf_do_callchain(regs, entry); - - return entry; -} diff --git a/arch/sh/kernel/perf_event.c b/arch/sh/kernel/perf_event.c index 7a3dc3567258..5a4b33435650 100644 --- a/arch/sh/kernel/perf_event.c +++ b/arch/sh/kernel/perf_event.c @@ -59,6 +59,24 @@ static inline int sh_pmu_initialized(void) return !!sh_pmu; } +const char *perf_pmu_name(void) +{ + if (!sh_pmu) + return NULL; + + return sh_pmu->name; +} +EXPORT_SYMBOL_GPL(perf_pmu_name); + +int perf_num_counters(void) +{ + if (!sh_pmu) + return 0; + + return sh_pmu->num_events; +} +EXPORT_SYMBOL_GPL(perf_num_counters); + /* * Release the PMU if this is the last perf_event. */ @@ -206,50 +224,80 @@ again: local64_add(delta, &event->count); } -static void sh_pmu_disable(struct perf_event *event) +static void sh_pmu_stop(struct perf_event *event, int flags) { struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events); struct hw_perf_event *hwc = &event->hw; int idx = hwc->idx; - clear_bit(idx, cpuc->active_mask); - sh_pmu->disable(hwc, idx); + if (!(event->hw.state & PERF_HES_STOPPED)) { + sh_pmu->disable(hwc, idx); + cpuc->events[idx] = NULL; + event->hw.state |= PERF_HES_STOPPED; + } + + if ((flags & PERF_EF_UPDATE) && !(event->hw.state & PERF_HES_UPTODATE)) { + sh_perf_event_update(event, &event->hw, idx); + event->hw.state |= PERF_HES_UPTODATE; + } +} + +static void sh_pmu_start(struct perf_event *event, int flags) +{ + struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events); + struct hw_perf_event *hwc = &event->hw; + int idx = hwc->idx; + + if (WARN_ON_ONCE(idx == -1)) + return; + + if (flags & PERF_EF_RELOAD) + WARN_ON_ONCE(!(event->hw.state & PERF_HES_UPTODATE)); - barrier(); + cpuc->events[idx] = event; + event->hw.state = 0; + sh_pmu->enable(hwc, idx); +} - sh_perf_event_update(event, &event->hw, idx); +static void sh_pmu_del(struct perf_event *event, int flags) +{ + struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events); - cpuc->events[idx] = NULL; - clear_bit(idx, cpuc->used_mask); + sh_pmu_stop(event, PERF_EF_UPDATE); + __clear_bit(event->hw.idx, cpuc->used_mask); perf_event_update_userpage(event); } -static int sh_pmu_enable(struct perf_event *event) +static int sh_pmu_add(struct perf_event *event, int flags) { struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events); struct hw_perf_event *hwc = &event->hw; int idx = hwc->idx; + int ret = -EAGAIN; + + perf_pmu_disable(event->pmu); - if (test_and_set_bit(idx, cpuc->used_mask)) { + if (__test_and_set_bit(idx, cpuc->used_mask)) { idx = find_first_zero_bit(cpuc->used_mask, sh_pmu->num_events); if (idx == sh_pmu->num_events) - return -EAGAIN; + goto out; - set_bit(idx, cpuc->used_mask); + __set_bit(idx, cpuc->used_mask); hwc->idx = idx; } sh_pmu->disable(hwc, idx); - cpuc->events[idx] = event; - set_bit(idx, cpuc->active_mask); - - sh_pmu->enable(hwc, idx); + event->hw.state = PERF_HES_UPTODATE | PERF_HES_STOPPED; + if (flags & PERF_EF_START) + sh_pmu_start(event, PERF_EF_RELOAD); perf_event_update_userpage(event); - - return 0; + ret = 0; +out: + perf_pmu_enable(event->pmu); + return ret; } static void sh_pmu_read(struct perf_event *event) @@ -257,24 +305,56 @@ static void sh_pmu_read(struct perf_event *event) sh_perf_event_update(event, &event->hw, event->hw.idx); } -static const struct pmu pmu = { - .enable = sh_pmu_enable, - .disable = sh_pmu_disable, - .read = sh_pmu_read, -}; - -const struct pmu *hw_perf_event_init(struct perf_event *event) +static int sh_pmu_event_init(struct perf_event *event) { - int err = __hw_perf_event_init(event); + int err; + + switch (event->attr.type) { + case PERF_TYPE_RAW: + case PERF_TYPE_HW_CACHE: + case PERF_TYPE_HARDWARE: + err = __hw_perf_event_init(event); + break; + + default: + return -ENOENT; + } + if (unlikely(err)) { if (event->destroy) event->destroy(event); - return ERR_PTR(err); } - return &pmu; + return err; +} + +static void sh_pmu_enable(struct pmu *pmu) +{ + if (!sh_pmu_initialized()) + return; + + sh_pmu->enable_all(); +} + +static void sh_pmu_disable(struct pmu *pmu) +{ + if (!sh_pmu_initialized()) + return; + + sh_pmu->disable_all(); } +static struct pmu pmu = { + .pmu_enable = sh_pmu_enable, + .pmu_disable = sh_pmu_disable, + .event_init = sh_pmu_event_init, + .add = sh_pmu_add, + .del = sh_pmu_del, + .start = sh_pmu_start, + .stop = sh_pmu_stop, + .read = sh_pmu_read, +}; + static void sh_pmu_setup(int cpu) { struct cpu_hw_events *cpuhw = &per_cpu(cpu_hw_events, cpu); @@ -299,32 +379,17 @@ sh_pmu_notifier(struct notifier_block *self, unsigned long action, void *hcpu) return NOTIFY_OK; } -void hw_perf_enable(void) -{ - if (!sh_pmu_initialized()) - return; - - sh_pmu->enable_all(); -} - -void hw_perf_disable(void) -{ - if (!sh_pmu_initialized()) - return; - - sh_pmu->disable_all(); -} - -int __cpuinit register_sh_pmu(struct sh_pmu *pmu) +int __cpuinit register_sh_pmu(struct sh_pmu *_pmu) { if (sh_pmu) return -EBUSY; - sh_pmu = pmu; + sh_pmu = _pmu; - pr_info("Performance Events: %s support registered\n", pmu->name); + pr_info("Performance Events: %s support registered\n", _pmu->name); - WARN_ON(pmu->num_events > MAX_HWEVENTS); + WARN_ON(_pmu->num_events > MAX_HWEVENTS); + perf_pmu_register(&pmu); perf_cpu_notifier(sh_pmu_notifier); return 0; } diff --git a/arch/sh/oprofile/Makefile b/arch/sh/oprofile/Makefile index 4886c5c1786c..e85aae73e3dc 100644 --- a/arch/sh/oprofile/Makefile +++ b/arch/sh/oprofile/Makefile @@ -6,4 +6,8 @@ DRIVER_OBJS = $(addprefix ../../../drivers/oprofile/, \ oprofilefs.o oprofile_stats.o \ timer_int.o ) +ifeq ($(CONFIG_HW_PERF_EVENTS),y) +DRIVER_OBJS += $(addprefix ../../../drivers/oprofile/, oprofile_perf.o) +endif + oprofile-y := $(DRIVER_OBJS) common.o backtrace.o diff --git a/arch/sh/oprofile/common.c b/arch/sh/oprofile/common.c index ac604937f3ee..e10d89376f9b 100644 --- a/arch/sh/oprofile/common.c +++ b/arch/sh/oprofile/common.c @@ -17,114 +17,45 @@ #include <linux/init.h> #include <linux/errno.h> #include <linux/smp.h> +#include <linux/perf_event.h> #include <asm/processor.h> -#include "op_impl.h" - -static struct op_sh_model *model; - -static struct op_counter_config ctr[20]; +#ifdef CONFIG_HW_PERF_EVENTS extern void sh_backtrace(struct pt_regs * const regs, unsigned int depth); -static int op_sh_setup(void) -{ - /* Pre-compute the values to stuff in the hardware registers. */ - model->reg_setup(ctr); - - /* Configure the registers on all cpus. */ - on_each_cpu(model->cpu_setup, NULL, 1); - - return 0; -} - -static int op_sh_create_files(struct super_block *sb, struct dentry *root) +char *op_name_from_perf_id(void) { - int i, ret = 0; + const char *pmu; + char buf[20]; + int size; - for (i = 0; i < model->num_counters; i++) { - struct dentry *dir; - char buf[4]; + pmu = perf_pmu_name(); + if (!pmu) + return NULL; - snprintf(buf, sizeof(buf), "%d", i); - dir = oprofilefs_mkdir(sb, root, buf); + size = snprintf(buf, sizeof(buf), "sh/%s", pmu); + if (size > -1 && size < sizeof(buf)) + return buf; - ret |= oprofilefs_create_ulong(sb, dir, "enabled", &ctr[i].enabled); - ret |= oprofilefs_create_ulong(sb, dir, "event", &ctr[i].event); - ret |= oprofilefs_create_ulong(sb, dir, "kernel", &ctr[i].kernel); - ret |= oprofilefs_create_ulong(sb, dir, "user", &ctr[i].user); - - if (model->create_files) - ret |= model->create_files(sb, dir); - else - ret |= oprofilefs_create_ulong(sb, dir, "count", &ctr[i].count); - - /* Dummy entries */ - ret |= oprofilefs_create_ulong(sb, dir, "unit_mask", &ctr[i].unit_mask); - } - - return ret; + return NULL; } -static int op_sh_start(void) +int __init oprofile_arch_init(struct oprofile_operations *ops) { - /* Enable performance monitoring for all counters. */ - on_each_cpu(model->cpu_start, NULL, 1); + ops->backtrace = sh_backtrace; - return 0; + return oprofile_perf_init(ops); } -static void op_sh_stop(void) +void __exit oprofile_arch_exit(void) { - /* Disable performance monitoring for all counters. */ - on_each_cpu(model->cpu_stop, NULL, 1); + oprofile_perf_exit(); } - +#else int __init oprofile_arch_init(struct oprofile_operations *ops) { - struct op_sh_model *lmodel = NULL; - int ret; - - /* - * Always assign the backtrace op. If the counter initialization - * fails, we fall back to the timer which will still make use of - * this. - */ - ops->backtrace = sh_backtrace; - - /* - * XXX - * - * All of the SH7750/SH-4A counters have been converted to perf, - * this infrastructure hook is left for other users until they've - * had a chance to convert over, at which point all of this - * will be deleted. - */ - - if (!lmodel) - return -ENODEV; - if (!(current_cpu_data.flags & CPU_HAS_PERF_COUNTER)) - return -ENODEV; - - ret = lmodel->init(); - if (unlikely(ret != 0)) - return ret; - - model = lmodel; - - ops->setup = op_sh_setup; - ops->create_files = op_sh_create_files; - ops->start = op_sh_start; - ops->stop = op_sh_stop; - ops->cpu_type = lmodel->cpu_type; - - printk(KERN_INFO "oprofile: using %s performance monitoring.\n", - lmodel->cpu_type); - - return 0; -} - -void oprofile_arch_exit(void) -{ - if (model && model->exit) - model->exit(); + pr_info("oprofile: hardware counters not available\n"); + return -ENODEV; } +void __exit oprofile_arch_exit(void) {} +#endif /* CONFIG_HW_PERF_EVENTS */ diff --git a/arch/sh/oprofile/op_impl.h b/arch/sh/oprofile/op_impl.h deleted file mode 100644 index 1244479ceb29..000000000000 --- a/arch/sh/oprofile/op_impl.h +++ /dev/null @@ -1,33 +0,0 @@ -#ifndef __OP_IMPL_H -#define __OP_IMPL_H - -/* Per-counter configuration as set via oprofilefs. */ -struct op_counter_config { - unsigned long enabled; - unsigned long event; - - unsigned long count; - - /* Dummy values for userspace tool compliance */ - unsigned long kernel; - unsigned long user; - unsigned long unit_mask; -}; - -/* Per-architecture configury and hooks. */ -struct op_sh_model { - void (*reg_setup)(struct op_counter_config *); - int (*create_files)(struct super_block *sb, struct dentry *dir); - void (*cpu_setup)(void *dummy); - int (*init)(void); - void (*exit)(void); - void (*cpu_start)(void *args); - void (*cpu_stop)(void *args); - char *cpu_type; - unsigned char num_counters; -}; - -/* arch/sh/oprofile/common.c */ -extern void sh_backtrace(struct pt_regs * const regs, unsigned int depth); - -#endif /* __OP_IMPL_H */ diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig index 491e9d6de191..3e9d31401fb2 100644 --- a/arch/sparc/Kconfig +++ b/arch/sparc/Kconfig @@ -26,10 +26,12 @@ config SPARC select ARCH_WANT_OPTIONAL_GPIOLIB select RTC_CLASS select RTC_DRV_M48T59 + select HAVE_IRQ_WORK select HAVE_PERF_EVENTS select PERF_USE_VMALLOC select HAVE_DMA_ATTRS select HAVE_DMA_API_DEBUG + select HAVE_ARCH_JUMP_LABEL config SPARC32 def_bool !64BIT @@ -53,6 +55,7 @@ config SPARC64 select RTC_DRV_BQ4802 select RTC_DRV_SUN4V select RTC_DRV_STARFIRE + select HAVE_IRQ_WORK select HAVE_PERF_EVENTS select PERF_USE_VMALLOC diff --git a/arch/sparc/include/asm/irqflags_32.h b/arch/sparc/include/asm/irqflags_32.h index 0fca9d97d44f..d4d0711de0f9 100644 --- a/arch/sparc/include/asm/irqflags_32.h +++ b/arch/sparc/include/asm/irqflags_32.h @@ -5,33 +5,40 @@ * * This file gets included from lowlevel asm headers too, to provide * wrapped versions of the local_irq_*() APIs, based on the - * raw_local_irq_*() functions from the lowlevel headers. + * arch_local_irq_*() functions from the lowlevel headers. */ #ifndef _ASM_IRQFLAGS_H #define _ASM_IRQFLAGS_H #ifndef __ASSEMBLY__ -extern void raw_local_irq_restore(unsigned long); -extern unsigned long __raw_local_irq_save(void); -extern void raw_local_irq_enable(void); +#include <linux/types.h> -static inline unsigned long getipl(void) +extern void arch_local_irq_restore(unsigned long); +extern unsigned long arch_local_irq_save(void); +extern void arch_local_irq_enable(void); + +static inline unsigned long arch_local_save_flags(void) { - unsigned long retval; + unsigned long flags; + + asm volatile("rd %%psr, %0" : "=r" (flags)); + return flags; +} - __asm__ __volatile__("rd %%psr, %0" : "=r" (retval)); - return retval; +static inline void arch_local_irq_disable(void) +{ + arch_local_irq_save(); } -#define raw_local_save_flags(flags) ((flags) = getipl()) -#define raw_local_irq_save(flags) ((flags) = __raw_local_irq_save()) -#define raw_local_irq_disable() ((void) __raw_local_irq_save()) -#define raw_irqs_disabled() ((getipl() & PSR_PIL) != 0) +static inline bool arch_irqs_disabled_flags(unsigned long flags) +{ + return (flags & PSR_PIL) != 0; +} -static inline int raw_irqs_disabled_flags(unsigned long flags) +static inline bool arch_irqs_disabled(void) { - return ((flags & PSR_PIL) != 0); + return arch_irqs_disabled_flags(arch_local_save_flags()); } #endif /* (__ASSEMBLY__) */ diff --git a/arch/sparc/include/asm/irqflags_64.h b/arch/sparc/include/asm/irqflags_64.h index bfa1ea45b4cd..aab969c82c2b 100644 --- a/arch/sparc/include/asm/irqflags_64.h +++ b/arch/sparc/include/asm/irqflags_64.h @@ -5,7 +5,7 @@ * * This file gets included from lowlevel asm headers too, to provide * wrapped versions of the local_irq_*() APIs, based on the - * raw_local_irq_*() functions from the lowlevel headers. + * arch_local_irq_*() functions from the lowlevel headers. */ #ifndef _ASM_IRQFLAGS_H #define _ASM_IRQFLAGS_H @@ -14,7 +14,7 @@ #ifndef __ASSEMBLY__ -static inline unsigned long __raw_local_save_flags(void) +static inline unsigned long arch_local_save_flags(void) { unsigned long flags; @@ -26,10 +26,7 @@ static inline unsigned long __raw_local_save_flags(void) return flags; } -#define raw_local_save_flags(flags) \ - do { (flags) = __raw_local_save_flags(); } while (0) - -static inline void raw_local_irq_restore(unsigned long flags) +static inline void arch_local_irq_restore(unsigned long flags) { __asm__ __volatile__( "wrpr %0, %%pil" @@ -39,7 +36,7 @@ static inline void raw_local_irq_restore(unsigned long flags) ); } -static inline void raw_local_irq_disable(void) +static inline void arch_local_irq_disable(void) { __asm__ __volatile__( "wrpr %0, %%pil" @@ -49,7 +46,7 @@ static inline void raw_local_irq_disable(void) ); } -static inline void raw_local_irq_enable(void) +static inline void arch_local_irq_enable(void) { __asm__ __volatile__( "wrpr 0, %%pil" @@ -59,22 +56,17 @@ static inline void raw_local_irq_enable(void) ); } -static inline int raw_irqs_disabled_flags(unsigned long flags) +static inline int arch_irqs_disabled_flags(unsigned long flags) { return (flags > 0); } -static inline int raw_irqs_disabled(void) +static inline int arch_irqs_disabled(void) { - unsigned long flags = __raw_local_save_flags(); - - return raw_irqs_disabled_flags(flags); + return arch_irqs_disabled_flags(arch_local_save_flags()); } -/* - * For spinlocks, etc: - */ -static inline unsigned long __raw_local_irq_save(void) +static inline unsigned long arch_local_irq_save(void) { unsigned long flags, tmp; @@ -100,9 +92,6 @@ static inline unsigned long __raw_local_irq_save(void) return flags; } -#define raw_local_irq_save(flags) \ - do { (flags) = __raw_local_irq_save(); } while (0) - #endif /* (__ASSEMBLY__) */ #endif /* !(_ASM_IRQFLAGS_H) */ diff --git a/arch/sparc/include/asm/jump_label.h b/arch/sparc/include/asm/jump_label.h new file mode 100644 index 000000000000..62e66d7b2fb6 --- /dev/null +++ b/arch/sparc/include/asm/jump_label.h @@ -0,0 +1,32 @@ +#ifndef _ASM_SPARC_JUMP_LABEL_H +#define _ASM_SPARC_JUMP_LABEL_H + +#ifdef __KERNEL__ + +#include <linux/types.h> +#include <asm/system.h> + +#define JUMP_LABEL_NOP_SIZE 4 + +#define JUMP_LABEL(key, label) \ + do { \ + asm goto("1:\n\t" \ + "nop\n\t" \ + "nop\n\t" \ + ".pushsection __jump_table, \"a\"\n\t"\ + ".word 1b, %l[" #label "], %c0\n\t" \ + ".popsection \n\t" \ + : : "i" (key) : : label);\ + } while (0) + +#endif /* __KERNEL__ */ + +typedef u32 jump_label_t; + +struct jump_entry { + jump_label_t code; + jump_label_t target; + jump_label_t key; +}; + +#endif diff --git a/arch/sparc/include/asm/perf_event.h b/arch/sparc/include/asm/perf_event.h index 727af70646cb..6e8bfa1786da 100644 --- a/arch/sparc/include/asm/perf_event.h +++ b/arch/sparc/include/asm/perf_event.h @@ -1,10 +1,6 @@ #ifndef __ASM_SPARC_PERF_EVENT_H #define __ASM_SPARC_PERF_EVENT_H -extern void set_perf_event_pending(void); - -#define PERF_EVENT_INDEX_OFFSET 0 - #ifdef CONFIG_PERF_EVENTS #include <asm/ptrace.h> diff --git a/arch/sparc/kernel/Makefile b/arch/sparc/kernel/Makefile index 0c2dc1f24a9a..599398fbbc7c 100644 --- a/arch/sparc/kernel/Makefile +++ b/arch/sparc/kernel/Makefile @@ -119,3 +119,5 @@ obj-$(CONFIG_COMPAT) += $(audit--y) pc--$(CONFIG_PERF_EVENTS) := perf_event.o obj-$(CONFIG_SPARC64) += $(pc--y) + +obj-$(CONFIG_SPARC64) += jump_label.o diff --git a/arch/sparc/kernel/irq_32.c b/arch/sparc/kernel/irq_32.c index e1af43728329..0116d8d10def 100644 --- a/arch/sparc/kernel/irq_32.c +++ b/arch/sparc/kernel/irq_32.c @@ -57,7 +57,7 @@ #define SMP_NOP2 #define SMP_NOP3 #endif /* SMP */ -unsigned long __raw_local_irq_save(void) +unsigned long arch_local_irq_save(void) { unsigned long retval; unsigned long tmp; @@ -74,8 +74,9 @@ unsigned long __raw_local_irq_save(void) return retval; } +EXPORT_SYMBOL(arch_local_irq_save); -void raw_local_irq_enable(void) +void arch_local_irq_enable(void) { unsigned long tmp; @@ -89,8 +90,9 @@ void raw_local_irq_enable(void) : "i" (PSR_PIL) : "memory"); } +EXPORT_SYMBOL(arch_local_irq_enable); -void raw_local_irq_restore(unsigned long old_psr) +void arch_local_irq_restore(unsigned long old_psr) { unsigned long tmp; @@ -105,10 +107,7 @@ void raw_local_irq_restore(unsigned long old_psr) : "i" (PSR_PIL), "r" (old_psr) : "memory"); } - -EXPORT_SYMBOL(__raw_local_irq_save); -EXPORT_SYMBOL(raw_local_irq_enable); -EXPORT_SYMBOL(raw_local_irq_restore); +EXPORT_SYMBOL(arch_local_irq_restore); /* * Dave Redman (djhr@tadpole.co.uk) diff --git a/arch/sparc/kernel/jump_label.c b/arch/sparc/kernel/jump_label.c new file mode 100644 index 000000000000..ea2dafc93d78 --- /dev/null +++ b/arch/sparc/kernel/jump_label.c @@ -0,0 +1,47 @@ +#include <linux/kernel.h> +#include <linux/types.h> +#include <linux/mutex.h> +#include <linux/cpu.h> + +#include <linux/jump_label.h> +#include <linux/memory.h> + +#ifdef HAVE_JUMP_LABEL + +void arch_jump_label_transform(struct jump_entry *entry, + enum jump_label_type type) +{ + u32 val; + u32 *insn = (u32 *) (unsigned long) entry->code; + + if (type == JUMP_LABEL_ENABLE) { + s32 off = (s32)entry->target - (s32)entry->code; + +#ifdef CONFIG_SPARC64 + /* ba,pt %xcc, . + (off << 2) */ + val = 0x10680000 | ((u32) off >> 2); +#else + /* ba . + (off << 2) */ + val = 0x10800000 | ((u32) off >> 2); +#endif + } else { + val = 0x01000000; + } + + get_online_cpus(); + mutex_lock(&text_mutex); + *insn = val; + flushi(insn); + mutex_unlock(&text_mutex); + put_online_cpus(); +} + +void arch_jump_label_text_poke_early(jump_label_t addr) +{ + u32 *insn_p = (u32 *) (unsigned long) addr; + + *insn_p = 0x01000000; + flushi(insn_p); +} + +#endif diff --git a/arch/sparc/kernel/module.c b/arch/sparc/kernel/module.c index f848aadf54dc..ee3c7dde8d9f 100644 --- a/arch/sparc/kernel/module.c +++ b/arch/sparc/kernel/module.c @@ -18,6 +18,9 @@ #include <asm/spitfire.h> #ifdef CONFIG_SPARC64 + +#include <linux/jump_label.h> + static void *module_map(unsigned long size) { struct vm_struct *area; @@ -227,6 +230,9 @@ int module_finalize(const Elf_Ehdr *hdr, const Elf_Shdr *sechdrs, struct module *me) { + /* make jump label nops */ + jump_label_apply_nops(me); + /* Cheetah's I-cache is fully coherent. */ if (tlb_type == spitfire) { unsigned long va; diff --git a/arch/sparc/kernel/pci_msi.c b/arch/sparc/kernel/pci_msi.c index 548b8ca9c210..b210416ace7b 100644 --- a/arch/sparc/kernel/pci_msi.c +++ b/arch/sparc/kernel/pci_msi.c @@ -114,10 +114,10 @@ static void free_msi(struct pci_pbm_info *pbm, int msi_num) static struct irq_chip msi_irq = { .name = "PCI-MSI", - .mask = mask_msi_irq, - .unmask = unmask_msi_irq, - .enable = unmask_msi_irq, - .disable = mask_msi_irq, + .irq_mask = mask_msi_irq, + .irq_unmask = unmask_msi_irq, + .irq_enable = unmask_msi_irq, + .irq_disable = mask_msi_irq, /* XXX affinity XXX */ }; diff --git a/arch/sparc/kernel/pcr.c b/arch/sparc/kernel/pcr.c index c4a6a50b4849..b87873c0e8ea 100644 --- a/arch/sparc/kernel/pcr.c +++ b/arch/sparc/kernel/pcr.c @@ -7,7 +7,7 @@ #include <linux/init.h> #include <linux/irq.h> -#include <linux/perf_event.h> +#include <linux/irq_work.h> #include <linux/ftrace.h> #include <asm/pil.h> @@ -43,14 +43,14 @@ void __irq_entry deferred_pcr_work_irq(int irq, struct pt_regs *regs) old_regs = set_irq_regs(regs); irq_enter(); -#ifdef CONFIG_PERF_EVENTS - perf_event_do_pending(); +#ifdef CONFIG_IRQ_WORK + irq_work_run(); #endif irq_exit(); set_irq_regs(old_regs); } -void set_perf_event_pending(void) +void arch_irq_work_raise(void) { set_softint(1 << PIL_DEFERRED_PCR_WORK); } diff --git a/arch/sparc/kernel/perf_event.c b/arch/sparc/kernel/perf_event.c index 6318e622cfb0..0d6deb55a2ae 100644 --- a/arch/sparc/kernel/perf_event.c +++ b/arch/sparc/kernel/perf_event.c @@ -658,13 +658,16 @@ static u64 maybe_change_configuration(struct cpu_hw_events *cpuc, u64 pcr) enc = perf_event_get_enc(cpuc->events[i]); pcr &= ~mask_for_index(idx); - pcr |= event_encoding(enc, idx); + if (hwc->state & PERF_HES_STOPPED) + pcr |= nop_for_index(idx); + else + pcr |= event_encoding(enc, idx); } out: return pcr; } -void hw_perf_enable(void) +static void sparc_pmu_enable(struct pmu *pmu) { struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events); u64 pcr; @@ -691,7 +694,7 @@ void hw_perf_enable(void) pcr_ops->write(cpuc->pcr); } -void hw_perf_disable(void) +static void sparc_pmu_disable(struct pmu *pmu) { struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events); u64 val; @@ -710,19 +713,65 @@ void hw_perf_disable(void) pcr_ops->write(cpuc->pcr); } -static void sparc_pmu_disable(struct perf_event *event) +static int active_event_index(struct cpu_hw_events *cpuc, + struct perf_event *event) +{ + int i; + + for (i = 0; i < cpuc->n_events; i++) { + if (cpuc->event[i] == event) + break; + } + BUG_ON(i == cpuc->n_events); + return cpuc->current_idx[i]; +} + +static void sparc_pmu_start(struct perf_event *event, int flags) +{ + struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events); + int idx = active_event_index(cpuc, event); + + if (flags & PERF_EF_RELOAD) { + WARN_ON_ONCE(!(event->hw.state & PERF_HES_UPTODATE)); + sparc_perf_event_set_period(event, &event->hw, idx); + } + + event->hw.state = 0; + + sparc_pmu_enable_event(cpuc, &event->hw, idx); +} + +static void sparc_pmu_stop(struct perf_event *event, int flags) +{ + struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events); + int idx = active_event_index(cpuc, event); + + if (!(event->hw.state & PERF_HES_STOPPED)) { + sparc_pmu_disable_event(cpuc, &event->hw, idx); + event->hw.state |= PERF_HES_STOPPED; + } + + if (!(event->hw.state & PERF_HES_UPTODATE) && (flags & PERF_EF_UPDATE)) { + sparc_perf_event_update(event, &event->hw, idx); + event->hw.state |= PERF_HES_UPTODATE; + } +} + +static void sparc_pmu_del(struct perf_event *event, int _flags) { struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events); - struct hw_perf_event *hwc = &event->hw; unsigned long flags; int i; local_irq_save(flags); - perf_disable(); + perf_pmu_disable(event->pmu); for (i = 0; i < cpuc->n_events; i++) { if (event == cpuc->event[i]) { - int idx = cpuc->current_idx[i]; + /* Absorb the final count and turn off the + * event. + */ + sparc_pmu_stop(event, PERF_EF_UPDATE); /* Shift remaining entries down into * the existing slot. @@ -734,13 +783,6 @@ static void sparc_pmu_disable(struct perf_event *event) cpuc->current_idx[i]; } - /* Absorb the final count and turn off the - * event. - */ - sparc_pmu_disable_event(cpuc, hwc, idx); - barrier(); - sparc_perf_event_update(event, hwc, idx); - perf_event_update_userpage(event); cpuc->n_events--; @@ -748,23 +790,10 @@ static void sparc_pmu_disable(struct perf_event *event) } } - perf_enable(); + perf_pmu_enable(event->pmu); local_irq_restore(flags); } -static int active_event_index(struct cpu_hw_events *cpuc, - struct perf_event *event) -{ - int i; - - for (i = 0; i < cpuc->n_events; i++) { - if (cpuc->event[i] == event) - break; - } - BUG_ON(i == cpuc->n_events); - return cpuc->current_idx[i]; -} - static void sparc_pmu_read(struct perf_event *event) { struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events); @@ -774,15 +803,6 @@ static void sparc_pmu_read(struct perf_event *event) sparc_perf_event_update(event, hwc, idx); } -static void sparc_pmu_unthrottle(struct perf_event *event) -{ - struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events); - int idx = active_event_index(cpuc, event); - struct hw_perf_event *hwc = &event->hw; - - sparc_pmu_enable_event(cpuc, hwc, idx); -} - static atomic_t active_events = ATOMIC_INIT(0); static DEFINE_MUTEX(pmc_grab_mutex); @@ -877,7 +897,7 @@ static int sparc_check_constraints(struct perf_event **evts, if (!n_ev) return 0; - if (n_ev > perf_max_events) + if (n_ev > MAX_HWEVENTS) return -1; msk0 = perf_event_get_msk(events[0]); @@ -984,23 +1004,27 @@ static int collect_events(struct perf_event *group, int max_count, return n; } -static int sparc_pmu_enable(struct perf_event *event) +static int sparc_pmu_add(struct perf_event *event, int ef_flags) { struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events); int n0, ret = -EAGAIN; unsigned long flags; local_irq_save(flags); - perf_disable(); + perf_pmu_disable(event->pmu); n0 = cpuc->n_events; - if (n0 >= perf_max_events) + if (n0 >= MAX_HWEVENTS) goto out; cpuc->event[n0] = event; cpuc->events[n0] = event->hw.event_base; cpuc->current_idx[n0] = PIC_NO_INDEX; + event->hw.state = PERF_HES_UPTODATE; + if (!(ef_flags & PERF_EF_START)) + event->hw.state |= PERF_HES_STOPPED; + /* * If group events scheduling transaction was started, * skip the schedulability test here, it will be peformed @@ -1020,12 +1044,12 @@ nocheck: ret = 0; out: - perf_enable(); + perf_pmu_enable(event->pmu); local_irq_restore(flags); return ret; } -static int __hw_perf_event_init(struct perf_event *event) +static int sparc_pmu_event_init(struct perf_event *event) { struct perf_event_attr *attr = &event->attr; struct perf_event *evts[MAX_HWEVENTS]; @@ -1038,22 +1062,33 @@ static int __hw_perf_event_init(struct perf_event *event) if (atomic_read(&nmi_active) < 0) return -ENODEV; - pmap = NULL; - if (attr->type == PERF_TYPE_HARDWARE) { + switch (attr->type) { + case PERF_TYPE_HARDWARE: if (attr->config >= sparc_pmu->max_events) return -EINVAL; pmap = sparc_pmu->event_map(attr->config); - } else if (attr->type == PERF_TYPE_HW_CACHE) { + break; + + case PERF_TYPE_HW_CACHE: pmap = sparc_map_cache_event(attr->config); if (IS_ERR(pmap)) return PTR_ERR(pmap); - } else if (attr->type != PERF_TYPE_RAW) - return -EOPNOTSUPP; + break; + + case PERF_TYPE_RAW: + pmap = NULL; + break; + + default: + return -ENOENT; + + } if (pmap) { hwc->event_base = perf_event_encode(pmap); } else { - /* User gives us "(encoding << 16) | pic_mask" for + /* + * User gives us "(encoding << 16) | pic_mask" for * PERF_TYPE_RAW events. */ hwc->event_base = attr->config; @@ -1071,7 +1106,7 @@ static int __hw_perf_event_init(struct perf_event *event) n = 0; if (event->group_leader != event) { n = collect_events(event->group_leader, - perf_max_events - 1, + MAX_HWEVENTS - 1, evts, events, current_idx_dmy); if (n < 0) return -EINVAL; @@ -1107,10 +1142,11 @@ static int __hw_perf_event_init(struct perf_event *event) * Set the flag to make pmu::enable() not perform the * schedulability test, it will be performed at commit time */ -static void sparc_pmu_start_txn(const struct pmu *pmu) +static void sparc_pmu_start_txn(struct pmu *pmu) { struct cpu_hw_events *cpuhw = &__get_cpu_var(cpu_hw_events); + perf_pmu_disable(pmu); cpuhw->group_flag |= PERF_EVENT_TXN; } @@ -1119,11 +1155,12 @@ static void sparc_pmu_start_txn(const struct pmu *pmu) * Clear the flag and pmu::enable() will perform the * schedulability test. */ -static void sparc_pmu_cancel_txn(const struct pmu *pmu) +static void sparc_pmu_cancel_txn(struct pmu *pmu) { struct cpu_hw_events *cpuhw = &__get_cpu_var(cpu_hw_events); cpuhw->group_flag &= ~PERF_EVENT_TXN; + perf_pmu_enable(pmu); } /* @@ -1131,7 +1168,7 @@ static void sparc_pmu_cancel_txn(const struct pmu *pmu) * Perform the group schedulability test as a whole * Return 0 if success */ -static int sparc_pmu_commit_txn(const struct pmu *pmu) +static int sparc_pmu_commit_txn(struct pmu *pmu) { struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events); int n; @@ -1147,28 +1184,24 @@ static int sparc_pmu_commit_txn(const struct pmu *pmu) return -EAGAIN; cpuc->group_flag &= ~PERF_EVENT_TXN; + perf_pmu_enable(pmu); return 0; } -static const struct pmu pmu = { - .enable = sparc_pmu_enable, - .disable = sparc_pmu_disable, +static struct pmu pmu = { + .pmu_enable = sparc_pmu_enable, + .pmu_disable = sparc_pmu_disable, + .event_init = sparc_pmu_event_init, + .add = sparc_pmu_add, + .del = sparc_pmu_del, + .start = sparc_pmu_start, + .stop = sparc_pmu_stop, .read = sparc_pmu_read, - .unthrottle = sparc_pmu_unthrottle, .start_txn = sparc_pmu_start_txn, .cancel_txn = sparc_pmu_cancel_txn, .commit_txn = sparc_pmu_commit_txn, }; -const struct pmu *hw_perf_event_init(struct perf_event *event) -{ - int err = __hw_perf_event_init(event); - - if (err) - return ERR_PTR(err); - return &pmu; -} - void perf_event_print_debug(void) { unsigned long flags; @@ -1244,7 +1277,7 @@ static int __kprobes perf_event_nmi_handler(struct notifier_block *self, continue; if (perf_event_overflow(event, 1, &data, regs)) - sparc_pmu_disable_event(cpuc, hwc, idx); + sparc_pmu_stop(event, 0); } return NOTIFY_STOP; @@ -1285,28 +1318,21 @@ void __init init_hw_perf_events(void) pr_cont("Supported PMU type is '%s'\n", sparc_pmu_type); - /* All sparc64 PMUs currently have 2 events. */ - perf_max_events = 2; - + perf_pmu_register(&pmu); register_die_notifier(&perf_event_nmi_notifier); } -static inline void callchain_store(struct perf_callchain_entry *entry, u64 ip) -{ - if (entry->nr < PERF_MAX_STACK_DEPTH) - entry->ip[entry->nr++] = ip; -} - -static void perf_callchain_kernel(struct pt_regs *regs, - struct perf_callchain_entry *entry) +void perf_callchain_kernel(struct perf_callchain_entry *entry, + struct pt_regs *regs) { unsigned long ksp, fp; #ifdef CONFIG_FUNCTION_GRAPH_TRACER int graph = 0; #endif - callchain_store(entry, PERF_CONTEXT_KERNEL); - callchain_store(entry, regs->tpc); + stack_trace_flush(); + + perf_callchain_store(entry, regs->tpc); ksp = regs->u_regs[UREG_I6]; fp = ksp + STACK_BIAS; @@ -1330,13 +1356,13 @@ static void perf_callchain_kernel(struct pt_regs *regs, pc = sf->callers_pc; fp = (unsigned long)sf->fp + STACK_BIAS; } - callchain_store(entry, pc); + perf_callchain_store(entry, pc); #ifdef CONFIG_FUNCTION_GRAPH_TRACER if ((pc + 8UL) == (unsigned long) &return_to_handler) { int index = current->curr_ret_stack; if (current->ret_stack && index >= graph) { pc = current->ret_stack[index - graph].ret; - callchain_store(entry, pc); + perf_callchain_store(entry, pc); graph++; } } @@ -1344,13 +1370,12 @@ static void perf_callchain_kernel(struct pt_regs *regs, } while (entry->nr < PERF_MAX_STACK_DEPTH); } -static void perf_callchain_user_64(struct pt_regs *regs, - struct perf_callchain_entry *entry) +static void perf_callchain_user_64(struct perf_callchain_entry *entry, + struct pt_regs *regs) { unsigned long ufp; - callchain_store(entry, PERF_CONTEXT_USER); - callchain_store(entry, regs->tpc); + perf_callchain_store(entry, regs->tpc); ufp = regs->u_regs[UREG_I6] + STACK_BIAS; do { @@ -1363,17 +1388,16 @@ static void perf_callchain_user_64(struct pt_regs *regs, pc = sf.callers_pc; ufp = (unsigned long)sf.fp + STACK_BIAS; - callchain_store(entry, pc); + perf_callchain_store(entry, pc); } while (entry->nr < PERF_MAX_STACK_DEPTH); } -static void perf_callchain_user_32(struct pt_regs *regs, - struct perf_callchain_entry *entry) +static void perf_callchain_user_32(struct perf_callchain_entry *entry, + struct pt_regs *regs) { unsigned long ufp; - callchain_store(entry, PERF_CONTEXT_USER); - callchain_store(entry, regs->tpc); + perf_callchain_store(entry, regs->tpc); ufp = regs->u_regs[UREG_I6] & 0xffffffffUL; do { @@ -1386,34 +1410,16 @@ static void perf_callchain_user_32(struct pt_regs *regs, pc = sf.callers_pc; ufp = (unsigned long)sf.fp; - callchain_store(entry, pc); + perf_callchain_store(entry, pc); } while (entry->nr < PERF_MAX_STACK_DEPTH); } -/* Like powerpc we can't get PMU interrupts within the PMU handler, - * so no need for separate NMI and IRQ chains as on x86. - */ -static DEFINE_PER_CPU(struct perf_callchain_entry, callchain); - -struct perf_callchain_entry *perf_callchain(struct pt_regs *regs) +void +perf_callchain_user(struct perf_callchain_entry *entry, struct pt_regs *regs) { - struct perf_callchain_entry *entry = &__get_cpu_var(callchain); - - entry->nr = 0; - if (!user_mode(regs)) { - stack_trace_flush(); - perf_callchain_kernel(regs, entry); - if (current->mm) - regs = task_pt_regs(current); - else - regs = NULL; - } - if (regs) { - flushw_user(); - if (test_thread_flag(TIF_32BIT)) - perf_callchain_user_32(regs, entry); - else - perf_callchain_user_64(regs, entry); - } - return entry; + flushw_user(); + if (test_thread_flag(TIF_32BIT)) + perf_callchain_user_32(entry, regs); + else + perf_callchain_user_64(entry, regs); } diff --git a/arch/sparc/prom/p1275.c b/arch/sparc/prom/p1275.c index fa6e4e219b9c..d9850c2b9bf2 100644 --- a/arch/sparc/prom/p1275.c +++ b/arch/sparc/prom/p1275.c @@ -39,7 +39,7 @@ void p1275_cmd_direct(unsigned long *args) unsigned long flags; raw_local_save_flags(flags); - raw_local_irq_restore(PIL_NMI); + raw_local_irq_restore((unsigned long)PIL_NMI); raw_spin_lock(&prom_entry_lock); prom_world(1); diff --git a/arch/tile/include/asm/irqflags.h b/arch/tile/include/asm/irqflags.h index 45cf67c2f286..a11d4837ee4d 100644 --- a/arch/tile/include/asm/irqflags.h +++ b/arch/tile/include/asm/irqflags.h @@ -103,55 +103,57 @@ DECLARE_PER_CPU(unsigned long long, interrupts_enabled_mask); #define INITIAL_INTERRUPTS_ENABLED INT_MASK(INT_MEM_ERROR) /* Disable interrupts. */ -#define raw_local_irq_disable() \ +#define arch_local_irq_disable() \ interrupt_mask_set_mask(LINUX_MASKABLE_INTERRUPTS) /* Disable all interrupts, including NMIs. */ -#define raw_local_irq_disable_all() \ +#define arch_local_irq_disable_all() \ interrupt_mask_set_mask(-1UL) /* Re-enable all maskable interrupts. */ -#define raw_local_irq_enable() \ +#define arch_local_irq_enable() \ interrupt_mask_reset_mask(__get_cpu_var(interrupts_enabled_mask)) /* Disable or enable interrupts based on flag argument. */ -#define raw_local_irq_restore(disabled) do { \ +#define arch_local_irq_restore(disabled) do { \ if (disabled) \ - raw_local_irq_disable(); \ + arch_local_irq_disable(); \ else \ - raw_local_irq_enable(); \ + arch_local_irq_enable(); \ } while (0) /* Return true if "flags" argument means interrupts are disabled. */ -#define raw_irqs_disabled_flags(flags) ((flags) != 0) +#define arch_irqs_disabled_flags(flags) ((flags) != 0) /* Return true if interrupts are currently disabled. */ -#define raw_irqs_disabled() interrupt_mask_check(INT_MEM_ERROR) +#define arch_irqs_disabled() interrupt_mask_check(INT_MEM_ERROR) /* Save whether interrupts are currently disabled. */ -#define raw_local_save_flags(flags) ((flags) = raw_irqs_disabled()) +#define arch_local_save_flags() arch_irqs_disabled() /* Save whether interrupts are currently disabled, then disable them. */ -#define raw_local_irq_save(flags) \ - do { raw_local_save_flags(flags); raw_local_irq_disable(); } while (0) +#define arch_local_irq_save() ({ \ + unsigned long __flags = arch_local_save_flags(); \ + arch_local_irq_disable(); \ + __flags; }) /* Prevent the given interrupt from being enabled next time we enable irqs. */ -#define raw_local_irq_mask(interrupt) \ +#define arch_local_irq_mask(interrupt) \ (__get_cpu_var(interrupts_enabled_mask) &= ~INT_MASK(interrupt)) /* Prevent the given interrupt from being enabled immediately. */ -#define raw_local_irq_mask_now(interrupt) do { \ - raw_local_irq_mask(interrupt); \ +#define arch_local_irq_mask_now(interrupt) do { \ + arch_local_irq_mask(interrupt); \ interrupt_mask_set(interrupt); \ } while (0) /* Allow the given interrupt to be enabled next time we enable irqs. */ -#define raw_local_irq_unmask(interrupt) \ +#define arch_local_irq_unmask(interrupt) \ (__get_cpu_var(interrupts_enabled_mask) |= INT_MASK(interrupt)) /* Allow the given interrupt to be enabled immediately, if !irqs_disabled. */ -#define raw_local_irq_unmask_now(interrupt) do { \ - raw_local_irq_unmask(interrupt); \ +#define arch_local_irq_unmask_now(interrupt) do { \ + arch_local_irq_unmask(interrupt); \ if (!irqs_disabled()) \ interrupt_mask_reset(interrupt); \ } while (0) diff --git a/arch/tile/kernel/irq.c b/arch/tile/kernel/irq.c index 596c60086930..9a27d563fc30 100644 --- a/arch/tile/kernel/irq.c +++ b/arch/tile/kernel/irq.c @@ -208,7 +208,7 @@ static void tile_irq_chip_eoi(unsigned int irq) } static struct irq_chip tile_irq_chip = { - .typename = "tile_irq_chip", + .name = "tile_irq_chip", .ack = tile_irq_chip_ack, .eoi = tile_irq_chip_eoi, .mask = tile_irq_chip_mask, @@ -288,7 +288,7 @@ int show_interrupts(struct seq_file *p, void *v) for_each_online_cpu(j) seq_printf(p, "%10u ", kstat_irqs_cpu(i, j)); #endif - seq_printf(p, " %14s", irq_desc[i].chip->typename); + seq_printf(p, " %14s", irq_desc[i].chip->name); seq_printf(p, " %s", action->name); for (action = action->next; action; action = action->next) diff --git a/arch/um/drivers/hostaudio_kern.c b/arch/um/drivers/hostaudio_kern.c index 0c46e398cd8f..63c740a85b4c 100644 --- a/arch/um/drivers/hostaudio_kern.c +++ b/arch/um/drivers/hostaudio_kern.c @@ -40,6 +40,11 @@ static char *mixer = HOSTAUDIO_DEV_MIXER; " This is used to specify the host mixer device to the hostaudio driver.\n"\ " The default is \"" HOSTAUDIO_DEV_MIXER "\".\n\n" +module_param(dsp, charp, 0644); +MODULE_PARM_DESC(dsp, DSP_HELP); +module_param(mixer, charp, 0644); +MODULE_PARM_DESC(mixer, MIXER_HELP); + #ifndef MODULE static int set_dsp(char *name, int *add) { @@ -56,15 +61,6 @@ static int set_mixer(char *name, int *add) } __uml_setup("mixer=", set_mixer, "mixer=<mixer device>\n" MIXER_HELP); - -#else /*MODULE*/ - -module_param(dsp, charp, 0644); -MODULE_PARM_DESC(dsp, DSP_HELP); - -module_param(mixer, charp, 0644); -MODULE_PARM_DESC(mixer, MIXER_HELP); - #endif /* /dev/dsp file operations */ diff --git a/arch/um/drivers/ubd_kern.c b/arch/um/drivers/ubd_kern.c index 1bcd208c459f..9734994cba1e 100644 --- a/arch/um/drivers/ubd_kern.c +++ b/arch/um/drivers/ubd_kern.c @@ -163,6 +163,7 @@ struct ubd { struct scatterlist sg[MAX_SG]; struct request *request; int start_sg, end_sg; + sector_t rq_pos; }; #define DEFAULT_COW { \ @@ -187,6 +188,7 @@ struct ubd { .request = NULL, \ .start_sg = 0, \ .end_sg = 0, \ + .rq_pos = 0, \ } /* Protected by ubd_lock */ @@ -1228,7 +1230,6 @@ static void do_ubd_request(struct request_queue *q) { struct io_thread_req *io_req; struct request *req; - sector_t sector; int n; while(1){ @@ -1239,12 +1240,12 @@ static void do_ubd_request(struct request_queue *q) return; dev->request = req; + dev->rq_pos = blk_rq_pos(req); dev->start_sg = 0; dev->end_sg = blk_rq_map_sg(q, req, dev->sg); } req = dev->request; - sector = blk_rq_pos(req); while(dev->start_sg < dev->end_sg){ struct scatterlist *sg = &dev->sg[dev->start_sg]; @@ -1256,10 +1257,9 @@ static void do_ubd_request(struct request_queue *q) return; } prepare_request(req, io_req, - (unsigned long long)sector << 9, + (unsigned long long)dev->rq_pos << 9, sg->offset, sg->length, sg_page(sg)); - sector += sg->length >> 9; n = os_write_file(thread_fd, &io_req, sizeof(struct io_thread_req *)); if(n != sizeof(struct io_thread_req *)){ @@ -1272,6 +1272,7 @@ static void do_ubd_request(struct request_queue *q) return; } + dev->rq_pos += sg->length >> 9; dev->start_sg++; } dev->end_sg = 0; diff --git a/arch/um/kernel/irq.c b/arch/um/kernel/irq.c index a3f0b04d7101..a746e3037a5b 100644 --- a/arch/um/kernel/irq.c +++ b/arch/um/kernel/irq.c @@ -46,7 +46,7 @@ int show_interrupts(struct seq_file *p, void *v) for_each_online_cpu(j) seq_printf(p, "%10u ", kstat_irqs_cpu(i, j)); #endif - seq_printf(p, " %14s", irq_desc[i].chip->typename); + seq_printf(p, " %14s", irq_desc[i].chip->name); seq_printf(p, " %s", action->name); for (action=action->next; action; action = action->next) @@ -369,7 +369,7 @@ static void dummy(unsigned int irq) /* This is used for everything else than the timer. */ static struct irq_chip normal_irq_type = { - .typename = "SIGIO", + .name = "SIGIO", .release = free_irq_by_irq_and_dev, .disable = dummy, .enable = dummy, @@ -378,7 +378,7 @@ static struct irq_chip normal_irq_type = { }; static struct irq_chip SIGVTALRM_irq_type = { - .typename = "SIGVTALRM", + .name = "SIGVTALRM", .release = free_irq_by_irq_and_dev, .shutdown = dummy, /* never called */ .disable = dummy, diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index cea0cd9a316f..7ab9db88ab6a 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -25,6 +25,7 @@ config X86 select HAVE_IDE select HAVE_OPROFILE select HAVE_PERF_EVENTS if (!M386 && !M486) + select HAVE_IRQ_WORK select HAVE_IOREMAP_PROT select HAVE_KPROBES select ARCH_WANT_OPTIONAL_GPIOLIB @@ -33,6 +34,7 @@ config X86 select HAVE_KRETPROBES select HAVE_OPTPROBES select HAVE_FTRACE_MCOUNT_RECORD + select HAVE_C_RECORDMCOUNT select HAVE_DYNAMIC_FTRACE select HAVE_FUNCTION_TRACER select HAVE_FUNCTION_GRAPH_TRACER @@ -59,6 +61,12 @@ config X86 select ANON_INODES select HAVE_ARCH_KMEMCHECK select HAVE_USER_RETURN_NOTIFIER + select HAVE_ARCH_JUMP_LABEL + select HAVE_TEXT_POKE_SMP + select HAVE_GENERIC_HARDIRQS + select HAVE_SPARSE_IRQ + select GENERIC_IRQ_PROBE + select GENERIC_PENDING_IRQ if SMP config INSTRUCTION_DECODER def_bool (KPROBES || PERF_EVENTS) @@ -200,20 +208,6 @@ config HAVE_INTEL_TXT def_bool y depends on EXPERIMENTAL && DMAR && ACPI -# Use the generic interrupt handling code in kernel/irq/: -config GENERIC_HARDIRQS - def_bool y - -config GENERIC_HARDIRQS_NO__DO_IRQ - def_bool y - -config GENERIC_IRQ_PROBE - def_bool y - -config GENERIC_PENDING_IRQ - def_bool y - depends on GENERIC_HARDIRQS && SMP - config USE_GENERIC_SMP_HELPERS def_bool y depends on SMP @@ -296,23 +290,6 @@ config X86_X2APIC If you don't know what to do here, say N. -config SPARSE_IRQ - bool "Support sparse irq numbering" - depends on PCI_MSI || HT_IRQ - ---help--- - This enables support for sparse irqs. This is useful for distro - kernels that want to define a high CONFIG_NR_CPUS value but still - want to have low kernel memory footprint on smaller machines. - - ( Sparse IRQs can also be beneficial on NUMA boxes, as they spread - out the irq_desc[] array in a more NUMA-friendly way. ) - - If you don't know what to do here, say N. - -config NUMA_IRQ_DESC - def_bool y - depends on SPARSE_IRQ && NUMA - config X86_MPPARSE bool "Enable MPS table" if ACPI default y @@ -517,25 +494,6 @@ if PARAVIRT_GUEST source "arch/x86/xen/Kconfig" -config VMI - bool "VMI Guest support (DEPRECATED)" - select PARAVIRT - depends on X86_32 - ---help--- - VMI provides a paravirtualized interface to the VMware ESX server - (it could be used by other hypervisors in theory too, but is not - at the moment), by linking the kernel to a GPL-ed ROM module - provided by the hypervisor. - - As of September 2009, VMware has started a phased retirement - of this feature from VMware's products. Please see - feature-removal-schedule.txt for details. If you are - planning to enable this option, please note that you cannot - live migrate a VMI enabled VM to a future VMware product, - which doesn't support VMI. So if you expect your kernel to - seamlessly migrate to newer VMware products, keep this - disabled. - config KVM_CLOCK bool "KVM paravirtualized clock" select PARAVIRT @@ -670,7 +628,7 @@ config GART_IOMMU bool "GART IOMMU support" if EMBEDDED default y select SWIOTLB - depends on X86_64 && PCI && K8_NB + depends on X86_64 && PCI && AMD_NB ---help--- Support for full DMA access of devices with 32bit memory access only on systems with more than 3GB. This is usually needed for USB, @@ -795,6 +753,17 @@ config SCHED_MC making when dealing with multi-core CPU chips at a cost of slightly increased overhead in some places. If unsure say N here. +config IRQ_TIME_ACCOUNTING + bool "Fine granularity task level IRQ time accounting" + default n + ---help--- + Select this option to enable fine granularity task irq time + accounting. This is done by reading a timestamp on each + transitions between softirq and hardirq state, so there can be a + small performance impact. + + If in doubt, say N here. + source "kernel/Kconfig.preempt" config X86_UP_APIC @@ -1148,6 +1117,9 @@ config X86_PAE config ARCH_PHYS_ADDR_T_64BIT def_bool X86_64 || X86_PAE +config ARCH_DMA_ADDR_T_64BIT + def_bool X86_64 || HIGHMEM64G + config DIRECT_GBPAGES bool "Enable 1GB pages for kernel pagetables" if EMBEDDED default y @@ -1326,25 +1298,34 @@ config X86_BOOTPARAM_MEMORY_CORRUPTION_CHECK Set whether the default state of memory_corruption_check is on or off. -config X86_RESERVE_LOW_64K - bool "Reserve low 64K of RAM on AMI/Phoenix BIOSen" - default y +config X86_RESERVE_LOW + int "Amount of low memory, in kilobytes, to reserve for the BIOS" + default 64 + range 4 640 ---help--- - Reserve the first 64K of physical RAM on BIOSes that are known - to potentially corrupt that memory range. A numbers of BIOSes are - known to utilize this area during suspend/resume, so it must not - be used by the kernel. + Specify the amount of low memory to reserve for the BIOS. + + The first page contains BIOS data structures that the kernel + must not use, so that page must always be reserved. - Set this to N if you are absolutely sure that you trust the BIOS - to get all its memory reservations and usages right. + By default we reserve the first 64K of physical RAM, as a + number of BIOSes are known to corrupt that memory range + during events such as suspend/resume or monitor cable + insertion, so it must not be used by the kernel. - If you have doubts about the BIOS (e.g. suspend/resume does not - work or there's kernel crashes after certain hardware hotplug - events) and it's not AMI or Phoenix, then you might want to enable - X86_CHECK_BIOS_CORRUPTION=y to allow the kernel to check typical - corruption patterns. + You can set this to 4 if you are absolutely sure that you + trust the BIOS to get all its memory reservations and usages + right. If you know your BIOS have problems beyond the + default 64K area, you can set this to 640 to avoid using the + entire low memory range. - Say Y if unsure. + If you have doubts about the BIOS (e.g. suspend/resume does + not work or there's kernel crashes after certain hardware + hotplug events) then you might want to enable + X86_CHECK_BIOS_CORRUPTION=y to allow the kernel to check + typical corruption patterns. + + Leave this to the default value of 64 if you are unsure. config MATH_EMULATION bool @@ -1900,7 +1881,7 @@ config PCI_GODIRECT bool "Direct" config PCI_GOOLPC - bool "OLPC" + bool "OLPC XO-1" depends on OLPC config PCI_GOANY @@ -2061,14 +2042,21 @@ config SCx200HR_TIMER config OLPC bool "One Laptop Per Child support" select GPIOLIB + select OLPC_OPENFIRMWARE ---help--- Add support for detecting the unique features of the OLPC XO hardware. +config OLPC_XO1 + tristate "OLPC XO-1 support" + depends on OLPC && PCI + ---help--- + Add support for non-essential features of the OLPC XO-1 laptop. + config OLPC_OPENFIRMWARE bool "Support for OLPC's Open Firmware" depends on !X86_64 && !X86_PAE - default y if OLPC + default n help This option adds support for the implementation of Open Firmware that is used on the OLPC XO-1 Children's Machine. @@ -2076,7 +2064,7 @@ config OLPC_OPENFIRMWARE endif # X86_32 -config K8_NB +config AMD_NB def_bool y depends on CPU_SUP_AMD && PCI @@ -2125,6 +2113,10 @@ config HAVE_ATOMIC_IOMAP def_bool y depends on X86_32 +config HAVE_TEXT_POKE_SMP + bool + select STOP_MACHINE if SMP + source "net/Kconfig" source "drivers/Kconfig" diff --git a/arch/x86/Kconfig.debug b/arch/x86/Kconfig.debug index 75085080b63e..e5bb96b10f1a 100644 --- a/arch/x86/Kconfig.debug +++ b/arch/x86/Kconfig.debug @@ -43,6 +43,10 @@ config EARLY_PRINTK with klogd/syslogd or the X server. You should normally N here, unless you want to debug such a crash. +config EARLY_PRINTK_MRST + bool "Early printk for MRST platform support" + depends on EARLY_PRINTK && X86_MRST + config EARLY_PRINTK_DBGP bool "Early printk via EHCI debug port" depends on EARLY_PRINTK && PCI diff --git a/arch/x86/Makefile b/arch/x86/Makefile index e8c8881351b3..b02e509072a7 100644 --- a/arch/x86/Makefile +++ b/arch/x86/Makefile @@ -96,8 +96,12 @@ cfi := $(call as-instr,.cfi_startproc\n.cfi_rel_offset $(sp-y)$(comma)0\n.cfi_en # is .cfi_signal_frame supported too? cfi-sigframe := $(call as-instr,.cfi_startproc\n.cfi_signal_frame\n.cfi_endproc,-DCONFIG_AS_CFI_SIGNAL_FRAME=1) cfi-sections := $(call as-instr,.cfi_sections .debug_frame,-DCONFIG_AS_CFI_SECTIONS=1) -KBUILD_AFLAGS += $(cfi) $(cfi-sigframe) $(cfi-sections) -KBUILD_CFLAGS += $(cfi) $(cfi-sigframe) $(cfi-sections) + +# does binutils support specific instructions? +asinstr := $(call as-instr,fxsaveq (%rax),-DCONFIG_AS_FXSAVEQ=1) + +KBUILD_AFLAGS += $(cfi) $(cfi-sigframe) $(cfi-sections) $(asinstr) +KBUILD_CFLAGS += $(cfi) $(cfi-sigframe) $(cfi-sections) $(asinstr) LDFLAGS := -m elf_$(UTS_MACHINE) diff --git a/arch/x86/include/asm/alternative.h b/arch/x86/include/asm/alternative.h index bc6abb7bc7ee..76561d20ea2f 100644 --- a/arch/x86/include/asm/alternative.h +++ b/arch/x86/include/asm/alternative.h @@ -4,6 +4,7 @@ #include <linux/types.h> #include <linux/stddef.h> #include <linux/stringify.h> +#include <linux/jump_label.h> #include <asm/asm.h> /* @@ -160,6 +161,8 @@ static inline void apply_paravirt(struct paravirt_patch_site *start, #define __parainstructions_end NULL #endif +extern void *text_poke_early(void *addr, const void *opcode, size_t len); + /* * Clear and restore the kernel write-protection flag on the local CPU. * Allows the kernel to edit read-only pages. @@ -180,4 +183,12 @@ static inline void apply_paravirt(struct paravirt_patch_site *start, extern void *text_poke(void *addr, const void *opcode, size_t len); extern void *text_poke_smp(void *addr, const void *opcode, size_t len); +#if defined(CONFIG_DYNAMIC_FTRACE) || defined(HAVE_JUMP_LABEL) +#define IDEAL_NOP_SIZE_5 5 +extern unsigned char ideal_nop5[IDEAL_NOP_SIZE_5]; +extern void arch_init_ideal_nop5(void); +#else +static inline void arch_init_ideal_nop5(void) {} +#endif + #endif /* _ASM_X86_ALTERNATIVE_H */ diff --git a/arch/x86/include/asm/amd_iommu.h b/arch/x86/include/asm/amd_iommu.h index 5af2982133b5..a6863a2dec1f 100644 --- a/arch/x86/include/asm/amd_iommu.h +++ b/arch/x86/include/asm/amd_iommu.h @@ -1,5 +1,5 @@ /* - * Copyright (C) 2007-2009 Advanced Micro Devices, Inc. + * Copyright (C) 2007-2010 Advanced Micro Devices, Inc. * Author: Joerg Roedel <joerg.roedel@amd.com> * Leo Duran <leo.duran@amd.com> * @@ -24,11 +24,11 @@ #ifdef CONFIG_AMD_IOMMU -extern void amd_iommu_detect(void); +extern int amd_iommu_detect(void); #else -static inline void amd_iommu_detect(void) { } +static inline int amd_iommu_detect(void) { return -ENODEV; } #endif diff --git a/arch/x86/include/asm/amd_iommu_proto.h b/arch/x86/include/asm/amd_iommu_proto.h index cb030374b90a..916bc8111a01 100644 --- a/arch/x86/include/asm/amd_iommu_proto.h +++ b/arch/x86/include/asm/amd_iommu_proto.h @@ -1,5 +1,5 @@ /* - * Copyright (C) 2009 Advanced Micro Devices, Inc. + * Copyright (C) 2009-2010 Advanced Micro Devices, Inc. * Author: Joerg Roedel <joerg.roedel@amd.com> * * This program is free software; you can redistribute it and/or modify it diff --git a/arch/x86/include/asm/amd_iommu_types.h b/arch/x86/include/asm/amd_iommu_types.h index 08616180deaf..e3509fc303bf 100644 --- a/arch/x86/include/asm/amd_iommu_types.h +++ b/arch/x86/include/asm/amd_iommu_types.h @@ -1,5 +1,5 @@ /* - * Copyright (C) 2007-2009 Advanced Micro Devices, Inc. + * Copyright (C) 2007-2010 Advanced Micro Devices, Inc. * Author: Joerg Roedel <joerg.roedel@amd.com> * Leo Duran <leo.duran@amd.com> * @@ -416,13 +416,22 @@ struct amd_iommu { struct dma_ops_domain *default_dom; /* - * This array is required to work around a potential BIOS bug. - * The BIOS may miss to restore parts of the PCI configuration - * space when the system resumes from S3. The result is that the - * IOMMU does not execute commands anymore which leads to system - * failure. + * We can't rely on the BIOS to restore all values on reinit, so we + * need to stash them */ - u32 cache_cfg[4]; + + /* The iommu BAR */ + u32 stored_addr_lo; + u32 stored_addr_hi; + + /* + * Each iommu has 6 l1s, each of which is documented as having 0x12 + * registers + */ + u32 stored_l1[6][0x12]; + + /* The l2 indirect registers */ + u32 stored_l2[0x83]; }; /* diff --git a/arch/x86/include/asm/k8.h b/arch/x86/include/asm/amd_nb.h index af00bd1d2089..c8517f81b21e 100644 --- a/arch/x86/include/asm/k8.h +++ b/arch/x86/include/asm/amd_nb.h @@ -1,5 +1,5 @@ -#ifndef _ASM_X86_K8_H -#define _ASM_X86_K8_H +#ifndef _ASM_X86_AMD_NB_H +#define _ASM_X86_AMD_NB_H #include <linux/pci.h> @@ -7,24 +7,27 @@ extern struct pci_device_id k8_nb_ids[]; struct bootnode; extern int early_is_k8_nb(u32 value); -extern struct pci_dev **k8_northbridges; -extern int num_k8_northbridges; extern int cache_k8_northbridges(void); extern void k8_flush_garts(void); extern int k8_get_nodes(struct bootnode *nodes); extern int k8_numa_init(unsigned long start_pfn, unsigned long end_pfn); extern int k8_scan_nodes(void); -#ifdef CONFIG_K8_NB -extern int num_k8_northbridges; +struct k8_northbridge_info { + u16 num; + u8 gart_supported; + struct pci_dev **nb_misc; +}; +extern struct k8_northbridge_info k8_northbridges; + +#ifdef CONFIG_AMD_NB static inline struct pci_dev *node_to_k8_nb_misc(int node) { - return (node < num_k8_northbridges) ? k8_northbridges[node] : NULL; + return (node < k8_northbridges.num) ? k8_northbridges.nb_misc[node] : NULL; } #else -#define num_k8_northbridges 0 static inline struct pci_dev *node_to_k8_nb_misc(int node) { @@ -33,4 +36,4 @@ static inline struct pci_dev *node_to_k8_nb_misc(int node) #endif -#endif /* _ASM_X86_K8_H */ +#endif /* _ASM_X86_AMD_NB_H */ diff --git a/arch/x86/include/asm/apb_timer.h b/arch/x86/include/asm/apb_timer.h index a69b1ac9eaf8..2fefa501d3ba 100644 --- a/arch/x86/include/asm/apb_timer.h +++ b/arch/x86/include/asm/apb_timer.h @@ -54,7 +54,6 @@ extern struct clock_event_device *global_clock_event; extern unsigned long apbt_quick_calibrate(void); extern int arch_setup_apbt_irqs(int irq, int trigger, int mask, int cpu); extern void apbt_setup_secondary_clock(void); -extern unsigned int boot_cpu_id; extern struct sfi_timer_table_entry *sfi_get_mtmr(int hint); extern void sfi_free_mtmr(struct sfi_timer_table_entry *mtmr); diff --git a/arch/x86/include/asm/apic.h b/arch/x86/include/asm/apic.h index 1fa03e04ae44..286de34b0ed6 100644 --- a/arch/x86/include/asm/apic.h +++ b/arch/x86/include/asm/apic.h @@ -252,9 +252,7 @@ static inline int apic_is_clustered_box(void) } #endif -extern u8 setup_APIC_eilvt_mce(u8 vector, u8 msg_type, u8 mask); -extern u8 setup_APIC_eilvt_ibs(u8 vector, u8 msg_type, u8 mask); - +extern int setup_APIC_eilvt(u8 lvt_off, u8 vector, u8 msg_type, u8 mask); #else /* !CONFIG_X86_LOCAL_APIC */ static inline void lapic_shutdown(void) { } diff --git a/arch/x86/include/asm/apicdef.h b/arch/x86/include/asm/apicdef.h index 7fe3b3060f08..a859ca461fb0 100644 --- a/arch/x86/include/asm/apicdef.h +++ b/arch/x86/include/asm/apicdef.h @@ -131,6 +131,7 @@ #define APIC_EILVTn(n) (0x500 + 0x10 * n) #define APIC_EILVT_NR_AMD_K8 1 /* # of extended interrupts */ #define APIC_EILVT_NR_AMD_10H 4 +#define APIC_EILVT_NR_MAX APIC_EILVT_NR_AMD_10H #define APIC_EILVT_LVTOFF(x) (((x) >> 4) & 0xF) #define APIC_EILVT_MSG_FIX 0x0 #define APIC_EILVT_MSG_SMI 0x2 diff --git a/arch/x86/include/asm/calgary.h b/arch/x86/include/asm/calgary.h index 0918654305af..0d467b338835 100644 --- a/arch/x86/include/asm/calgary.h +++ b/arch/x86/include/asm/calgary.h @@ -62,9 +62,9 @@ struct cal_chipset_ops { extern int use_calgary; #ifdef CONFIG_CALGARY_IOMMU -extern void detect_calgary(void); +extern int detect_calgary(void); #else -static inline void detect_calgary(void) { return; } +static inline int detect_calgary(void) { return -ENODEV; } #endif #endif /* _ASM_X86_CALGARY_H */ diff --git a/arch/x86/include/asm/cpu.h b/arch/x86/include/asm/cpu.h index b185091bf19c..4fab24de26b1 100644 --- a/arch/x86/include/asm/cpu.h +++ b/arch/x86/include/asm/cpu.h @@ -32,6 +32,5 @@ extern void arch_unregister_cpu(int); DECLARE_PER_CPU(int, cpu_state); -extern unsigned int boot_cpu_id; #endif /* _ASM_X86_CPU_H */ diff --git a/arch/x86/include/asm/cpufeature.h b/arch/x86/include/asm/cpufeature.h index 3f76523589af..220e2ea08e80 100644 --- a/arch/x86/include/asm/cpufeature.h +++ b/arch/x86/include/asm/cpufeature.h @@ -152,10 +152,14 @@ #define X86_FEATURE_3DNOWPREFETCH (6*32+ 8) /* 3DNow prefetch instructions */ #define X86_FEATURE_OSVW (6*32+ 9) /* OS Visible Workaround */ #define X86_FEATURE_IBS (6*32+10) /* Instruction Based Sampling */ -#define X86_FEATURE_SSE5 (6*32+11) /* SSE-5 */ +#define X86_FEATURE_XOP (6*32+11) /* extended AVX instructions */ #define X86_FEATURE_SKINIT (6*32+12) /* SKINIT/STGI instructions */ #define X86_FEATURE_WDT (6*32+13) /* Watchdog timer */ +#define X86_FEATURE_LWP (6*32+15) /* Light Weight Profiling */ +#define X86_FEATURE_FMA4 (6*32+16) /* 4 operands MAC instructions */ #define X86_FEATURE_NODEID_MSR (6*32+19) /* NodeId MSR */ +#define X86_FEATURE_TBM (6*32+21) /* trailing bit manipulations */ +#define X86_FEATURE_TOPOEXT (6*32+22) /* topology extensions CPUID leafs */ /* * Auxiliary flags: Linux defined - For features scattered in various @@ -180,6 +184,13 @@ #define X86_FEATURE_LBRV (8*32+ 6) /* AMD LBR Virtualization support */ #define X86_FEATURE_SVML (8*32+ 7) /* "svm_lock" AMD SVM locking MSR */ #define X86_FEATURE_NRIPS (8*32+ 8) /* "nrip_save" AMD SVM next_rip save */ +#define X86_FEATURE_TSCRATEMSR (8*32+ 9) /* "tsc_scale" AMD TSC scaling support */ +#define X86_FEATURE_VMCBCLEAN (8*32+10) /* "vmcb_clean" AMD VMCB clean bits support */ +#define X86_FEATURE_FLUSHBYASID (8*32+11) /* AMD flush-by-ASID support */ +#define X86_FEATURE_DECODEASSISTS (8*32+12) /* AMD Decode Assists support */ +#define X86_FEATURE_PAUSEFILTER (8*32+13) /* AMD filtered pause intercept */ +#define X86_FEATURE_PFTHRESHOLD (8*32+14) /* AMD pause filter threshold */ + /* Intel-defined CPU features, CPUID level 0x00000007:0 (ebx), word 9 */ #define X86_FEATURE_FSGSBASE (9*32+ 0) /* {RD/WR}{FS/GS}BASE instructions*/ diff --git a/arch/x86/include/asm/dwarf2.h b/arch/x86/include/asm/dwarf2.h index 733f7e91e7a9..326099199318 100644 --- a/arch/x86/include/asm/dwarf2.h +++ b/arch/x86/include/asm/dwarf2.h @@ -89,6 +89,16 @@ CFI_ADJUST_CFA_OFFSET -8 .endm + .macro pushfq_cfi + pushfq + CFI_ADJUST_CFA_OFFSET 8 + .endm + + .macro popfq_cfi + popfq + CFI_ADJUST_CFA_OFFSET -8 + .endm + .macro movq_cfi reg offset=0 movq %\reg, \offset(%rsp) CFI_REL_OFFSET \reg, \offset @@ -109,6 +119,16 @@ CFI_ADJUST_CFA_OFFSET -4 .endm + .macro pushfl_cfi + pushfl + CFI_ADJUST_CFA_OFFSET 4 + .endm + + .macro popfl_cfi + popfl + CFI_ADJUST_CFA_OFFSET -4 + .endm + .macro movl_cfi reg offset=0 movl %\reg, \offset(%esp) CFI_REL_OFFSET \reg, \offset diff --git a/arch/x86/include/asm/entry_arch.h b/arch/x86/include/asm/entry_arch.h index 8e8ec663a98f..b8e96a18676b 100644 --- a/arch/x86/include/asm/entry_arch.h +++ b/arch/x86/include/asm/entry_arch.h @@ -49,8 +49,8 @@ BUILD_INTERRUPT(apic_timer_interrupt,LOCAL_TIMER_VECTOR) BUILD_INTERRUPT(error_interrupt,ERROR_APIC_VECTOR) BUILD_INTERRUPT(spurious_interrupt,SPURIOUS_APIC_VECTOR) -#ifdef CONFIG_PERF_EVENTS -BUILD_INTERRUPT(perf_pending_interrupt, LOCAL_PENDING_VECTOR) +#ifdef CONFIG_IRQ_WORK +BUILD_INTERRUPT(irq_work_interrupt, IRQ_WORK_VECTOR) #endif #ifdef CONFIG_X86_THERMAL_VECTOR diff --git a/arch/x86/include/asm/fixmap.h b/arch/x86/include/asm/fixmap.h index d07b44f7d1dc..4d293dced62f 100644 --- a/arch/x86/include/asm/fixmap.h +++ b/arch/x86/include/asm/fixmap.h @@ -214,5 +214,20 @@ static inline unsigned long virt_to_fix(const unsigned long vaddr) BUG_ON(vaddr >= FIXADDR_TOP || vaddr < FIXADDR_START); return __virt_to_fix(vaddr); } + +/* Return an pointer with offset calculated */ +static inline unsigned long __set_fixmap_offset(enum fixed_addresses idx, + phys_addr_t phys, pgprot_t flags) +{ + __set_fixmap(idx, phys, flags); + return fix_to_virt(idx) + (phys & (PAGE_SIZE - 1)); +} + +#define set_fixmap_offset(idx, phys) \ + __set_fixmap_offset(idx, phys, PAGE_KERNEL) + +#define set_fixmap_offset_nocache(idx, phys) \ + __set_fixmap_offset(idx, phys, PAGE_KERNEL_NOCACHE) + #endif /* !__ASSEMBLY__ */ #endif /* _ASM_X86_FIXMAP_H */ diff --git a/arch/x86/include/asm/gart.h b/arch/x86/include/asm/gart.h index 4ac5b0f33fc1..43085bfc99c3 100644 --- a/arch/x86/include/asm/gart.h +++ b/arch/x86/include/asm/gart.h @@ -17,6 +17,7 @@ extern int fix_aperture; #define GARTEN (1<<0) #define DISGARTCPU (1<<4) #define DISGARTIO (1<<5) +#define DISTLBWALKPRB (1<<6) /* GART cache control register bits. */ #define INVGART (1<<0) @@ -27,7 +28,6 @@ extern int fix_aperture; #define AMD64_GARTAPERTUREBASE 0x94 #define AMD64_GARTTABLEBASE 0x98 #define AMD64_GARTCACHECTL 0x9c -#define AMD64_GARTEN (1<<0) #ifdef CONFIG_GART_IOMMU extern int gart_iommu_aperture; @@ -37,7 +37,7 @@ extern int gart_iommu_aperture_disabled; extern void early_gart_iommu_check(void); extern int gart_iommu_init(void); extern void __init gart_parse_options(char *); -extern void gart_iommu_hole_init(void); +extern int gart_iommu_hole_init(void); #else #define gart_iommu_aperture 0 @@ -50,13 +50,27 @@ static inline void early_gart_iommu_check(void) static inline void gart_parse_options(char *options) { } -static inline void gart_iommu_hole_init(void) +static inline int gart_iommu_hole_init(void) { + return -ENODEV; } #endif extern int agp_amd64_init(void); +static inline void gart_set_size_and_enable(struct pci_dev *dev, u32 order) +{ + u32 ctl; + + /* + * Don't enable translation but enable GART IO and CPU accesses. + * Also, set DISTLBWALKPRB since GART tables memory is UC. + */ + ctl = DISTLBWALKPRB | order << 1; + + pci_write_config_dword(dev, AMD64_GARTAPERTURECTL, ctl); +} + static inline void enable_gart_translation(struct pci_dev *dev, u64 addr) { u32 tmp, ctl; diff --git a/arch/x86/include/asm/hardirq.h b/arch/x86/include/asm/hardirq.h index aeab29aee617..55e4de613f0e 100644 --- a/arch/x86/include/asm/hardirq.h +++ b/arch/x86/include/asm/hardirq.h @@ -14,7 +14,7 @@ typedef struct { #endif unsigned int x86_platform_ipis; /* arch dependent */ unsigned int apic_perf_irqs; - unsigned int apic_pending_irqs; + unsigned int apic_irq_work_irqs; #ifdef CONFIG_SMP unsigned int irq_resched_count; unsigned int irq_call_count; diff --git a/arch/x86/include/asm/hpet.h b/arch/x86/include/asm/hpet.h index 1d5c08a1bdfd..2c392d663dce 100644 --- a/arch/x86/include/asm/hpet.h +++ b/arch/x86/include/asm/hpet.h @@ -74,10 +74,12 @@ extern void hpet_disable(void); extern unsigned int hpet_readl(unsigned int a); extern void force_hpet_resume(void); -extern void hpet_msi_unmask(unsigned int irq); -extern void hpet_msi_mask(unsigned int irq); -extern void hpet_msi_write(unsigned int irq, struct msi_msg *msg); -extern void hpet_msi_read(unsigned int irq, struct msi_msg *msg); +struct irq_data; +extern void hpet_msi_unmask(struct irq_data *data); +extern void hpet_msi_mask(struct irq_data *data); +struct hpet_dev; +extern void hpet_msi_write(struct hpet_dev *hdev, struct msi_msg *msg); +extern void hpet_msi_read(struct hpet_dev *hdev, struct msi_msg *msg); #ifdef CONFIG_PCI_MSI extern int arch_setup_hpet_msi(unsigned int irq, unsigned int id); diff --git a/arch/x86/include/asm/hw_irq.h b/arch/x86/include/asm/hw_irq.h index 46c0fe05f230..0274ec5a7e62 100644 --- a/arch/x86/include/asm/hw_irq.h +++ b/arch/x86/include/asm/hw_irq.h @@ -29,7 +29,7 @@ extern void apic_timer_interrupt(void); extern void x86_platform_ipi(void); extern void error_interrupt(void); -extern void perf_pending_interrupt(void); +extern void irq_work_interrupt(void); extern void spurious_interrupt(void); extern void thermal_interrupt(void); @@ -78,6 +78,13 @@ static inline void set_io_apic_irq_attr(struct io_apic_irq_attr *irq_attr, irq_attr->polarity = polarity; } +struct irq_2_iommu { + struct intel_iommu *iommu; + u16 irte_index; + u16 sub_handle; + u8 irte_mask; +}; + /* * This is performance-critical, we want to do it O(1) * @@ -89,15 +96,17 @@ struct irq_cfg { cpumask_var_t old_domain; u8 vector; u8 move_in_progress : 1; +#ifdef CONFIG_INTR_REMAP + struct irq_2_iommu irq_2_iommu; +#endif }; -extern struct irq_cfg *irq_cfg(unsigned int); extern int assign_irq_vector(int, struct irq_cfg *, const struct cpumask *); extern void send_cleanup_vector(struct irq_cfg *); -struct irq_desc; -extern unsigned int set_desc_affinity(struct irq_desc *, const struct cpumask *, - unsigned int *dest_id); +struct irq_data; +int __ioapic_set_affinity(struct irq_data *, const struct cpumask *, + unsigned int *dest_id); extern int IO_APIC_get_PCI_irq_vector(int bus, int devfn, int pin, struct io_apic_irq_attr *irq_attr); extern void setup_ioapic_dest(void); diff --git a/arch/x86/include/asm/i387.h b/arch/x86/include/asm/i387.h index a73a8d5a5e69..4aa2bb3b242a 100644 --- a/arch/x86/include/asm/i387.h +++ b/arch/x86/include/asm/i387.h @@ -55,6 +55,12 @@ extern int save_i387_xstate_ia32(void __user *buf); extern int restore_i387_xstate_ia32(void __user *buf); #endif +#ifdef CONFIG_MATH_EMULATION +extern void finit_soft_fpu(struct i387_soft_struct *soft); +#else +static inline void finit_soft_fpu(struct i387_soft_struct *soft) {} +#endif + #define X87_FSW_ES (1 << 7) /* Exception Summary */ static __always_inline __pure bool use_xsaveopt(void) @@ -67,6 +73,11 @@ static __always_inline __pure bool use_xsave(void) return static_cpu_has(X86_FEATURE_XSAVE); } +static __always_inline __pure bool use_fxsr(void) +{ + return static_cpu_has(X86_FEATURE_FXSR); +} + extern void __sanitize_i387_state(struct task_struct *); static inline void sanitize_i387_state(struct task_struct *tsk) @@ -77,19 +88,11 @@ static inline void sanitize_i387_state(struct task_struct *tsk) } #ifdef CONFIG_X86_64 - -/* Ignore delayed exceptions from user space */ -static inline void tolerant_fwait(void) -{ - asm volatile("1: fwait\n" - "2:\n" - _ASM_EXTABLE(1b, 2b)); -} - static inline int fxrstor_checking(struct i387_fxsave_struct *fx) { int err; + /* See comment in fxsave() below. */ asm volatile("1: rex64/fxrstor (%[fx])\n\t" "2:\n" ".section .fixup,\"ax\"\n" @@ -98,44 +101,10 @@ static inline int fxrstor_checking(struct i387_fxsave_struct *fx) ".previous\n" _ASM_EXTABLE(1b, 3b) : [err] "=r" (err) -#if 0 /* See comment in fxsave() below. */ - : [fx] "r" (fx), "m" (*fx), "0" (0)); -#else - : [fx] "cdaSDb" (fx), "m" (*fx), "0" (0)); -#endif + : [fx] "R" (fx), "m" (*fx), "0" (0)); return err; } -/* AMD CPUs don't save/restore FDP/FIP/FOP unless an exception - is pending. Clear the x87 state here by setting it to fixed - values. The kernel data segment can be sometimes 0 and sometimes - new user value. Both should be ok. - Use the PDA as safe address because it should be already in L1. */ -static inline void fpu_clear(struct fpu *fpu) -{ - struct xsave_struct *xstate = &fpu->state->xsave; - struct i387_fxsave_struct *fx = &fpu->state->fxsave; - - /* - * xsave header may indicate the init state of the FP. - */ - if (use_xsave() && - !(xstate->xsave_hdr.xstate_bv & XSTATE_FP)) - return; - - if (unlikely(fx->swd & X87_FSW_ES)) - asm volatile("fnclex"); - alternative_input(ASM_NOP8 ASM_NOP2, - " emms\n" /* clear stack tags */ - " fildl %%gs:0", /* load to clear state */ - X86_FEATURE_FXSAVE_LEAK); -} - -static inline void clear_fpu_state(struct task_struct *tsk) -{ - fpu_clear(&tsk->thread.fpu); -} - static inline int fxsave_user(struct i387_fxsave_struct __user *fx) { int err; @@ -149,6 +118,7 @@ static inline int fxsave_user(struct i387_fxsave_struct __user *fx) if (unlikely(err)) return -EFAULT; + /* See comment in fxsave() below. */ asm volatile("1: rex64/fxsave (%[fx])\n\t" "2:\n" ".section .fixup,\"ax\"\n" @@ -157,11 +127,7 @@ static inline int fxsave_user(struct i387_fxsave_struct __user *fx) ".previous\n" _ASM_EXTABLE(1b, 3b) : [err] "=r" (err), "=m" (*fx) -#if 0 /* See comment in fxsave() below. */ - : [fx] "r" (fx), "0" (0)); -#else - : [fx] "cdaSDb" (fx), "0" (0)); -#endif + : [fx] "R" (fx), "0" (0)); if (unlikely(err) && __clear_user(fx, sizeof(struct i387_fxsave_struct))) err = -EFAULT; @@ -175,56 +141,29 @@ static inline void fpu_fxsave(struct fpu *fpu) uses any extended registers for addressing, a second REX prefix will be generated (to the assembler, rex64 followed by semicolon is a separate instruction), and hence the 64-bitness is lost. */ -#if 0 + +#ifdef CONFIG_AS_FXSAVEQ /* Using "fxsaveq %0" would be the ideal choice, but is only supported starting with gas 2.16. */ __asm__ __volatile__("fxsaveq %0" : "=m" (fpu->state->fxsave)); -#elif 0 +#else /* Using, as a workaround, the properly prefixed form below isn't accepted by any binutils version so far released, complaining that the same type of prefix is used twice if an extended register is - needed for addressing (fix submitted to mainline 2005-11-21). */ - __asm__ __volatile__("rex64/fxsave %0" - : "=m" (fpu->state->fxsave)); -#else - /* This, however, we can work around by forcing the compiler to select + needed for addressing (fix submitted to mainline 2005-11-21). + asm volatile("rex64/fxsave %0" + : "=m" (fpu->state->fxsave)); + This, however, we can work around by forcing the compiler to select an addressing mode that doesn't require extended registers. */ - __asm__ __volatile__("rex64/fxsave (%1)" - : "=m" (fpu->state->fxsave) - : "cdaSDb" (&fpu->state->fxsave)); + asm volatile("rex64/fxsave (%[fx])" + : "=m" (fpu->state->fxsave) + : [fx] "R" (&fpu->state->fxsave)); #endif } -static inline void fpu_save_init(struct fpu *fpu) -{ - if (use_xsave()) - fpu_xsave(fpu); - else - fpu_fxsave(fpu); - - fpu_clear(fpu); -} - -static inline void __save_init_fpu(struct task_struct *tsk) -{ - fpu_save_init(&tsk->thread.fpu); - task_thread_info(tsk)->status &= ~TS_USEDFPU; -} - #else /* CONFIG_X86_32 */ -#ifdef CONFIG_MATH_EMULATION -extern void finit_soft_fpu(struct i387_soft_struct *soft); -#else -static inline void finit_soft_fpu(struct i387_soft_struct *soft) {} -#endif - -static inline void tolerant_fwait(void) -{ - asm volatile("fnclex ; fwait"); -} - /* perform fxrstor iff the processor has extended states, otherwise frstor */ static inline int fxrstor_checking(struct i387_fxsave_struct *fx) { @@ -241,6 +180,14 @@ static inline int fxrstor_checking(struct i387_fxsave_struct *fx) return 0; } +static inline void fpu_fxsave(struct fpu *fpu) +{ + asm volatile("fxsave %[fx]" + : [fx] "=m" (fpu->state->fxsave)); +} + +#endif /* CONFIG_X86_64 */ + /* We need a safe address that is cheap to find and that is already in L1 during context switch. The best choices are unfortunately different for UP and SMP */ @@ -256,47 +203,33 @@ static inline int fxrstor_checking(struct i387_fxsave_struct *fx) static inline void fpu_save_init(struct fpu *fpu) { if (use_xsave()) { - struct xsave_struct *xstate = &fpu->state->xsave; - struct i387_fxsave_struct *fx = &fpu->state->fxsave; - fpu_xsave(fpu); /* * xsave header may indicate the init state of the FP. */ - if (!(xstate->xsave_hdr.xstate_bv & XSTATE_FP)) - goto end; - - if (unlikely(fx->swd & X87_FSW_ES)) - asm volatile("fnclex"); - - /* - * we can do a simple return here or be paranoid :) - */ - goto clear_state; + if (!(fpu->state->xsave.xsave_hdr.xstate_bv & XSTATE_FP)) + return; + } else if (use_fxsr()) { + fpu_fxsave(fpu); + } else { + asm volatile("fsave %[fx]; fwait" + : [fx] "=m" (fpu->state->fsave)); + return; } - /* Use more nops than strictly needed in case the compiler - varies code */ - alternative_input( - "fnsave %[fx] ;fwait;" GENERIC_NOP8 GENERIC_NOP4, - "fxsave %[fx]\n" - "bt $7,%[fsw] ; jnc 1f ; fnclex\n1:", - X86_FEATURE_FXSR, - [fx] "m" (fpu->state->fxsave), - [fsw] "m" (fpu->state->fxsave.swd) : "memory"); -clear_state: + if (unlikely(fpu->state->fxsave.swd & X87_FSW_ES)) + asm volatile("fnclex"); + /* AMD K7/K8 CPUs don't save/restore FDP/FIP/FOP unless an exception is pending. Clear the x87 state here by setting it to fixed values. safe_address is a random variable that should be in L1 */ alternative_input( - GENERIC_NOP8 GENERIC_NOP2, + ASM_NOP8 ASM_NOP2, "emms\n\t" /* clear stack tags */ - "fildl %[addr]", /* set F?P to defined value */ + "fildl %P[addr]", /* set F?P to defined value */ X86_FEATURE_FXSAVE_LEAK, [addr] "m" (safe_address)); -end: - ; } static inline void __save_init_fpu(struct task_struct *tsk) @@ -305,9 +238,6 @@ static inline void __save_init_fpu(struct task_struct *tsk) task_thread_info(tsk)->status &= ~TS_USEDFPU; } - -#endif /* CONFIG_X86_64 */ - static inline int fpu_fxrstor_checking(struct fpu *fpu) { return fxrstor_checking(&fpu->state->fxsave); @@ -344,7 +274,10 @@ static inline void __unlazy_fpu(struct task_struct *tsk) static inline void __clear_fpu(struct task_struct *tsk) { if (task_thread_info(tsk)->status & TS_USEDFPU) { - tolerant_fwait(); + /* Ignore delayed exceptions from user space */ + asm volatile("1: fwait\n" + "2:\n" + _ASM_EXTABLE(1b, 2b)); task_thread_info(tsk)->status &= ~TS_USEDFPU; stts(); } @@ -405,19 +338,6 @@ static inline void irq_ts_restore(int TS_state) stts(); } -#ifdef CONFIG_X86_64 - -static inline void save_init_fpu(struct task_struct *tsk) -{ - __save_init_fpu(tsk); - stts(); -} - -#define unlazy_fpu __unlazy_fpu -#define clear_fpu __clear_fpu - -#else /* CONFIG_X86_32 */ - /* * These disable preemption on their own and are safe */ @@ -443,8 +363,6 @@ static inline void clear_fpu(struct task_struct *tsk) preempt_enable(); } -#endif /* CONFIG_X86_64 */ - /* * i387 state interaction */ @@ -508,7 +426,4 @@ extern void fpu_finit(struct fpu *fpu); #endif /* __ASSEMBLY__ */ -#define PSHUFB_XMM5_XMM0 .byte 0x66, 0x0f, 0x38, 0x00, 0xc5 -#define PSHUFB_XMM5_XMM6 .byte 0x66, 0x0f, 0x38, 0x00, 0xf5 - #endif /* _ASM_X86_I387_H */ diff --git a/arch/x86/include/asm/i8259.h b/arch/x86/include/asm/i8259.h index 1655147646aa..a20365953bf8 100644 --- a/arch/x86/include/asm/i8259.h +++ b/arch/x86/include/asm/i8259.h @@ -55,6 +55,8 @@ extern struct irq_chip i8259A_chip; struct legacy_pic { int nr_legacy_irqs; struct irq_chip *chip; + void (*mask)(unsigned int irq); + void (*unmask)(unsigned int irq); void (*mask_all)(void); void (*restore_mask)(void); void (*init)(int auto_eoi); diff --git a/arch/x86/include/asm/io.h b/arch/x86/include/asm/io.h index 30a3e9776123..6a45ec41ec26 100644 --- a/arch/x86/include/asm/io.h +++ b/arch/x86/include/asm/io.h @@ -206,6 +206,7 @@ static inline void __iomem *ioremap(resource_size_t offset, unsigned long size) extern void iounmap(volatile void __iomem *addr); +extern void set_iounmap_nonlazy(void); #ifdef __KERNEL__ diff --git a/arch/x86/include/asm/io_apic.h b/arch/x86/include/asm/io_apic.h index 9cb2edb87c2f..c8be4566c3d2 100644 --- a/arch/x86/include/asm/io_apic.h +++ b/arch/x86/include/asm/io_apic.h @@ -170,12 +170,6 @@ extern int restore_IO_APIC_setup(struct IO_APIC_route_entry **ioapic_entries); extern void probe_nr_irqs_gsi(void); -extern int setup_ioapic_entry(int apic, int irq, - struct IO_APIC_route_entry *entry, - unsigned int destination, int trigger, - int polarity, int vector, int pin); -extern void ioapic_write_entry(int apic, int pin, - struct IO_APIC_route_entry e); extern void setup_ioapic_ids_from_mpc(void); struct mp_ioapic_gsi{ diff --git a/arch/x86/include/asm/iommu_table.h b/arch/x86/include/asm/iommu_table.h new file mode 100644 index 000000000000..f229b13a5f30 --- /dev/null +++ b/arch/x86/include/asm/iommu_table.h @@ -0,0 +1,100 @@ +#ifndef _ASM_X86_IOMMU_TABLE_H +#define _ASM_X86_IOMMU_TABLE_H + +#include <asm/swiotlb.h> + +/* + * History lesson: + * The execution chain of IOMMUs in 2.6.36 looks as so: + * + * [xen-swiotlb] + * | + * +----[swiotlb *]--+ + * / | \ + * / | \ + * [GART] [Calgary] [Intel VT-d] + * / + * / + * [AMD-Vi] + * + * *: if SWIOTLB detected 'iommu=soft'/'swiotlb=force' it would skip + * over the rest of IOMMUs and unconditionally initialize the SWIOTLB. + * Also it would surreptitiously initialize set the swiotlb=1 if there were + * more than 4GB and if the user did not pass in 'iommu=off'. The swiotlb + * flag would be turned off by all IOMMUs except the Calgary one. + * + * The IOMMU_INIT* macros allow a similar tree (or more complex if desired) + * to be built by defining who we depend on. + * + * And all that needs to be done is to use one of the macros in the IOMMU + * and the pci-dma.c will take care of the rest. + */ + +struct iommu_table_entry { + initcall_t detect; + initcall_t depend; + void (*early_init)(void); /* No memory allocate available. */ + void (*late_init)(void); /* Yes, can allocate memory. */ +#define IOMMU_FINISH_IF_DETECTED (1<<0) +#define IOMMU_DETECTED (1<<1) + int flags; +}; +/* + * Macro fills out an entry in the .iommu_table that is equivalent + * to the fields that 'struct iommu_table_entry' has. The entries + * that are put in the .iommu_table section are not put in any order + * hence during boot-time we will have to resort them based on + * dependency. */ + + +#define __IOMMU_INIT(_detect, _depend, _early_init, _late_init, _finish)\ + static const struct iommu_table_entry const \ + __iommu_entry_##_detect __used \ + __attribute__ ((unused, __section__(".iommu_table"), \ + aligned((sizeof(void *))))) \ + = {_detect, _depend, _early_init, _late_init, \ + _finish ? IOMMU_FINISH_IF_DETECTED : 0} +/* + * The simplest IOMMU definition. Provide the detection routine + * and it will be run after the SWIOTLB and the other IOMMUs + * that utilize this macro. If the IOMMU is detected (ie, the + * detect routine returns a positive value), the other IOMMUs + * are also checked. You can use IOMMU_INIT_POST_FINISH if you prefer + * to stop detecting the other IOMMUs after yours has been detected. + */ +#define IOMMU_INIT_POST(_detect) \ + __IOMMU_INIT(_detect, pci_swiotlb_detect_4gb, 0, 0, 0) + +#define IOMMU_INIT_POST_FINISH(detect) \ + __IOMMU_INIT(_detect, pci_swiotlb_detect_4gb, 0, 0, 1) + +/* + * A more sophisticated version of IOMMU_INIT. This variant requires: + * a). A detection routine function. + * b). The name of the detection routine we depend on to get called + * before us. + * c). The init routine which gets called if the detection routine + * returns a positive value from the pci_iommu_alloc. This means + * no presence of a memory allocator. + * d). Similar to the 'init', except that this gets called from pci_iommu_init + * where we do have a memory allocator. + * + * The standard vs the _FINISH differs in that the _FINISH variant will + * continue detecting other IOMMUs in the call list after the + * the detection routine returns a positive number. The _FINISH will + * stop the execution chain. Both will still call the 'init' and + * 'late_init' functions if they are set. + */ +#define IOMMU_INIT_FINISH(_detect, _depend, _init, _late_init) \ + __IOMMU_INIT(_detect, _depend, _init, _late_init, 1) + +#define IOMMU_INIT(_detect, _depend, _init, _late_init) \ + __IOMMU_INIT(_detect, _depend, _init, _late_init, 0) + +void sort_iommu_table(struct iommu_table_entry *start, + struct iommu_table_entry *finish); + +void check_iommu_entries(struct iommu_table_entry *start, + struct iommu_table_entry *finish); + +#endif /* _ASM_X86_IOMMU_TABLE_H */ diff --git a/arch/x86/include/asm/irq_remapping.h b/arch/x86/include/asm/irq_remapping.h index f275e2244505..1c23360fb2d8 100644 --- a/arch/x86/include/asm/irq_remapping.h +++ b/arch/x86/include/asm/irq_remapping.h @@ -3,4 +3,39 @@ #define IRTE_DEST(dest) ((x2apic_mode) ? dest : dest << 8) +#ifdef CONFIG_INTR_REMAP +static inline void prepare_irte(struct irte *irte, int vector, + unsigned int dest) +{ + memset(irte, 0, sizeof(*irte)); + + irte->present = 1; + irte->dst_mode = apic->irq_dest_mode; + /* + * Trigger mode in the IRTE will always be edge, and for IO-APIC, the + * actual level or edge trigger will be setup in the IO-APIC + * RTE. This will help simplify level triggered irq migration. + * For more details, see the comments (in io_apic.c) explainig IO-APIC + * irq migration in the presence of interrupt-remapping. + */ + irte->trigger_mode = 0; + irte->dlvry_mode = apic->irq_delivery_mode; + irte->vector = vector; + irte->dest_id = IRTE_DEST(dest); + irte->redir_hint = 1; +} +static inline bool irq_remapped(struct irq_cfg *cfg) +{ + return cfg->irq_2_iommu.iommu != NULL; +} +#else +static void prepare_irte(struct irte *irte, int vector, unsigned int dest) +{ +} +static inline bool irq_remapped(struct irq_cfg *cfg) +{ + return false; +} +#endif + #endif /* _ASM_X86_IRQ_REMAPPING_H */ diff --git a/arch/x86/include/asm/irq_vectors.h b/arch/x86/include/asm/irq_vectors.h index e2ca30092557..6af0894dafb4 100644 --- a/arch/x86/include/asm/irq_vectors.h +++ b/arch/x86/include/asm/irq_vectors.h @@ -114,9 +114,9 @@ #define X86_PLATFORM_IPI_VECTOR 0xed /* - * Performance monitoring pending work vector: + * IRQ work vector: */ -#define LOCAL_PENDING_VECTOR 0xec +#define IRQ_WORK_VECTOR 0xec #define UV_BAU_MESSAGE 0xea diff --git a/arch/x86/include/asm/irqflags.h b/arch/x86/include/asm/irqflags.h index 9e2b952f810a..5745ce8bf108 100644 --- a/arch/x86/include/asm/irqflags.h +++ b/arch/x86/include/asm/irqflags.h @@ -61,22 +61,22 @@ static inline void native_halt(void) #else #ifndef __ASSEMBLY__ -static inline unsigned long __raw_local_save_flags(void) +static inline unsigned long arch_local_save_flags(void) { return native_save_fl(); } -static inline void raw_local_irq_restore(unsigned long flags) +static inline void arch_local_irq_restore(unsigned long flags) { native_restore_fl(flags); } -static inline void raw_local_irq_disable(void) +static inline void arch_local_irq_disable(void) { native_irq_disable(); } -static inline void raw_local_irq_enable(void) +static inline void arch_local_irq_enable(void) { native_irq_enable(); } @@ -85,7 +85,7 @@ static inline void raw_local_irq_enable(void) * Used in the idle loop; sti takes one instruction cycle * to complete: */ -static inline void raw_safe_halt(void) +static inline void arch_safe_halt(void) { native_safe_halt(); } @@ -102,12 +102,10 @@ static inline void halt(void) /* * For spinlocks, etc: */ -static inline unsigned long __raw_local_irq_save(void) +static inline unsigned long arch_local_irq_save(void) { - unsigned long flags = __raw_local_save_flags(); - - raw_local_irq_disable(); - + unsigned long flags = arch_local_save_flags(); + arch_local_irq_disable(); return flags; } #else @@ -153,22 +151,16 @@ static inline unsigned long __raw_local_irq_save(void) #endif /* CONFIG_PARAVIRT */ #ifndef __ASSEMBLY__ -#define raw_local_save_flags(flags) \ - do { (flags) = __raw_local_save_flags(); } while (0) - -#define raw_local_irq_save(flags) \ - do { (flags) = __raw_local_irq_save(); } while (0) - -static inline int raw_irqs_disabled_flags(unsigned long flags) +static inline int arch_irqs_disabled_flags(unsigned long flags) { return !(flags & X86_EFLAGS_IF); } -static inline int raw_irqs_disabled(void) +static inline int arch_irqs_disabled(void) { - unsigned long flags = __raw_local_save_flags(); + unsigned long flags = arch_local_save_flags(); - return raw_irqs_disabled_flags(flags); + return arch_irqs_disabled_flags(flags); } #else diff --git a/arch/x86/include/asm/jump_label.h b/arch/x86/include/asm/jump_label.h new file mode 100644 index 000000000000..f52d42e80585 --- /dev/null +++ b/arch/x86/include/asm/jump_label.h @@ -0,0 +1,37 @@ +#ifndef _ASM_X86_JUMP_LABEL_H +#define _ASM_X86_JUMP_LABEL_H + +#ifdef __KERNEL__ + +#include <linux/types.h> +#include <asm/nops.h> + +#define JUMP_LABEL_NOP_SIZE 5 + +# define JUMP_LABEL_INITIAL_NOP ".byte 0xe9 \n\t .long 0\n\t" + +# define JUMP_LABEL(key, label) \ + do { \ + asm goto("1:" \ + JUMP_LABEL_INITIAL_NOP \ + ".pushsection __jump_table, \"a\" \n\t"\ + _ASM_PTR "1b, %l[" #label "], %c0 \n\t" \ + ".popsection \n\t" \ + : : "i" (key) : : label); \ + } while (0) + +#endif /* __KERNEL__ */ + +#ifdef CONFIG_X86_64 +typedef u64 jump_label_t; +#else +typedef u32 jump_label_t; +#endif + +struct jump_entry { + jump_label_t code; + jump_label_t target; + jump_label_t key; +}; + +#endif diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h index 502e53f999cf..c52e2eb40a1e 100644 --- a/arch/x86/include/asm/kvm_host.h +++ b/arch/x86/include/asm/kvm_host.h @@ -652,20 +652,6 @@ static inline struct kvm_mmu_page *page_header(hpa_t shadow_page) return (struct kvm_mmu_page *)page_private(page); } -static inline u16 kvm_read_fs(void) -{ - u16 seg; - asm("mov %%fs, %0" : "=g"(seg)); - return seg; -} - -static inline u16 kvm_read_gs(void) -{ - u16 seg; - asm("mov %%gs, %0" : "=g"(seg)); - return seg; -} - static inline u16 kvm_read_ldt(void) { u16 ldt; @@ -673,16 +659,6 @@ static inline u16 kvm_read_ldt(void) return ldt; } -static inline void kvm_load_fs(u16 sel) -{ - asm("mov %0, %%fs" : : "rm"(sel)); -} - -static inline void kvm_load_gs(u16 sel) -{ - asm("mov %0, %%gs" : : "rm"(sel)); -} - static inline void kvm_load_ldt(u16 sel) { asm("lldt %0" : : "rm"(sel)); diff --git a/arch/x86/include/asm/mrst.h b/arch/x86/include/asm/mrst.h index 16350740edf6..4a711a684b17 100644 --- a/arch/x86/include/asm/mrst.h +++ b/arch/x86/include/asm/mrst.h @@ -10,6 +10,9 @@ */ #ifndef _ASM_X86_MRST_H #define _ASM_X86_MRST_H + +#include <linux/sfi.h> + extern int pci_mrst_init(void); int __init sfi_parse_mrtc(struct sfi_table_header *table); @@ -26,7 +29,7 @@ enum mrst_cpu_type { }; extern enum mrst_cpu_type __mrst_cpu_chip; -static enum mrst_cpu_type mrst_identify_cpu(void) +static inline enum mrst_cpu_type mrst_identify_cpu(void) { return __mrst_cpu_chip; } @@ -42,4 +45,9 @@ extern enum mrst_timer_options mrst_timer_options; #define SFI_MTMR_MAX_NUM 8 #define SFI_MRTC_MAX 8 +extern struct console early_mrst_console; +extern void mrst_early_console_init(void); + +extern struct console early_hsu_console; +extern void hsu_early_console_init(void); #endif /* _ASM_X86_MRST_H */ diff --git a/arch/x86/include/asm/mwait.h b/arch/x86/include/asm/mwait.h new file mode 100644 index 000000000000..bcdff997668c --- /dev/null +++ b/arch/x86/include/asm/mwait.h @@ -0,0 +1,15 @@ +#ifndef _ASM_X86_MWAIT_H +#define _ASM_X86_MWAIT_H + +#define MWAIT_SUBSTATE_MASK 0xf +#define MWAIT_CSTATE_MASK 0xf +#define MWAIT_SUBSTATE_SIZE 4 +#define MWAIT_MAX_NUM_CSTATES 8 + +#define CPUID_MWAIT_LEAF 5 +#define CPUID5_ECX_EXTENSIONS_SUPPORTED 0x1 +#define CPUID5_ECX_INTERRUPT_BREAK 0x2 + +#define MWAIT_ECX_INTERRUPT_BREAK 0x1 + +#endif /* _ASM_X86_MWAIT_H */ diff --git a/arch/x86/include/asm/olpc_ofw.h b/arch/x86/include/asm/olpc_ofw.h index 08fde475cb3b..2a8478140bb3 100644 --- a/arch/x86/include/asm/olpc_ofw.h +++ b/arch/x86/include/asm/olpc_ofw.h @@ -21,10 +21,14 @@ extern void olpc_ofw_detect(void); /* install OFW's pde permanently into the kernel's pgtable */ extern void setup_olpc_ofw_pgd(void); +/* check if OFW was detected during boot */ +extern bool olpc_ofw_present(void); + #else /* !CONFIG_OLPC_OPENFIRMWARE */ static inline void olpc_ofw_detect(void) { } static inline void setup_olpc_ofw_pgd(void) { } +static inline bool olpc_ofw_present(void) { return false; } #endif /* !CONFIG_OLPC_OPENFIRMWARE */ diff --git a/arch/x86/include/asm/page_types.h b/arch/x86/include/asm/page_types.h index a667f24c7254..1df66211fd1b 100644 --- a/arch/x86/include/asm/page_types.h +++ b/arch/x86/include/asm/page_types.h @@ -8,7 +8,7 @@ #define PAGE_SIZE (_AC(1,UL) << PAGE_SHIFT) #define PAGE_MASK (~(PAGE_SIZE-1)) -#define __PHYSICAL_MASK ((phys_addr_t)(1ULL << __PHYSICAL_MASK_SHIFT) - 1) +#define __PHYSICAL_MASK ((phys_addr_t)((1ULL << __PHYSICAL_MASK_SHIFT) - 1)) #define __VIRTUAL_MASK ((1UL << __VIRTUAL_MASK_SHIFT) - 1) /* Cast PAGE_MASK to a signed type so that it is sign-extended if diff --git a/arch/x86/include/asm/paravirt.h b/arch/x86/include/asm/paravirt.h index 5653f43d90e5..18e3b8a8709f 100644 --- a/arch/x86/include/asm/paravirt.h +++ b/arch/x86/include/asm/paravirt.h @@ -105,7 +105,7 @@ static inline void write_cr8(unsigned long x) } #endif -static inline void raw_safe_halt(void) +static inline void arch_safe_halt(void) { PVOP_VCALL0(pv_irq_ops.safe_halt); } @@ -416,11 +416,6 @@ static inline void paravirt_alloc_pmd(struct mm_struct *mm, unsigned long pfn) PVOP_VCALL2(pv_mmu_ops.alloc_pmd, mm, pfn); } -static inline void paravirt_alloc_pmd_clone(unsigned long pfn, unsigned long clonepfn, - unsigned long start, unsigned long count) -{ - PVOP_VCALL4(pv_mmu_ops.alloc_pmd_clone, pfn, clonepfn, start, count); -} static inline void paravirt_release_pmd(unsigned long pfn) { PVOP_VCALL1(pv_mmu_ops.release_pmd, pfn); @@ -829,32 +824,32 @@ static __always_inline void arch_spin_unlock(struct arch_spinlock *lock) #define __PV_IS_CALLEE_SAVE(func) \ ((struct paravirt_callee_save) { func }) -static inline unsigned long __raw_local_save_flags(void) +static inline unsigned long arch_local_save_flags(void) { return PVOP_CALLEE0(unsigned long, pv_irq_ops.save_fl); } -static inline void raw_local_irq_restore(unsigned long f) +static inline void arch_local_irq_restore(unsigned long f) { PVOP_VCALLEE1(pv_irq_ops.restore_fl, f); } -static inline void raw_local_irq_disable(void) +static inline void arch_local_irq_disable(void) { PVOP_VCALLEE0(pv_irq_ops.irq_disable); } -static inline void raw_local_irq_enable(void) +static inline void arch_local_irq_enable(void) { PVOP_VCALLEE0(pv_irq_ops.irq_enable); } -static inline unsigned long __raw_local_irq_save(void) +static inline unsigned long arch_local_irq_save(void) { unsigned long f; - f = __raw_local_save_flags(); - raw_local_irq_disable(); + f = arch_local_save_flags(); + arch_local_irq_disable(); return f; } diff --git a/arch/x86/include/asm/paravirt_types.h b/arch/x86/include/asm/paravirt_types.h index db9ef5532341..b82bac975250 100644 --- a/arch/x86/include/asm/paravirt_types.h +++ b/arch/x86/include/asm/paravirt_types.h @@ -255,7 +255,6 @@ struct pv_mmu_ops { */ void (*alloc_pte)(struct mm_struct *mm, unsigned long pfn); void (*alloc_pmd)(struct mm_struct *mm, unsigned long pfn); - void (*alloc_pmd_clone)(unsigned long pfn, unsigned long clonepfn, unsigned long start, unsigned long count); void (*alloc_pud)(struct mm_struct *mm, unsigned long pfn); void (*release_pte)(unsigned long pfn); void (*release_pmd)(unsigned long pfn); diff --git a/arch/x86/include/asm/perf_event_p4.h b/arch/x86/include/asm/perf_event_p4.h index def500776b16..a70cd216be5d 100644 --- a/arch/x86/include/asm/perf_event_p4.h +++ b/arch/x86/include/asm/perf_event_p4.h @@ -36,19 +36,6 @@ #define P4_ESCR_EMASK(v) ((v) << P4_ESCR_EVENTMASK_SHIFT) #define P4_ESCR_TAG(v) ((v) << P4_ESCR_TAG_SHIFT) -/* Non HT mask */ -#define P4_ESCR_MASK \ - (P4_ESCR_EVENT_MASK | \ - P4_ESCR_EVENTMASK_MASK | \ - P4_ESCR_TAG_MASK | \ - P4_ESCR_TAG_ENABLE | \ - P4_ESCR_T0_OS | \ - P4_ESCR_T0_USR) - -/* HT mask */ -#define P4_ESCR_MASK_HT \ - (P4_ESCR_MASK | P4_ESCR_T1_OS | P4_ESCR_T1_USR) - #define P4_CCCR_OVF 0x80000000U #define P4_CCCR_CASCADE 0x40000000U #define P4_CCCR_OVF_PMI_T0 0x04000000U @@ -70,23 +57,6 @@ #define P4_CCCR_THRESHOLD(v) ((v) << P4_CCCR_THRESHOLD_SHIFT) #define P4_CCCR_ESEL(v) ((v) << P4_CCCR_ESCR_SELECT_SHIFT) -/* Non HT mask */ -#define P4_CCCR_MASK \ - (P4_CCCR_OVF | \ - P4_CCCR_CASCADE | \ - P4_CCCR_OVF_PMI_T0 | \ - P4_CCCR_FORCE_OVF | \ - P4_CCCR_EDGE | \ - P4_CCCR_THRESHOLD_MASK | \ - P4_CCCR_COMPLEMENT | \ - P4_CCCR_COMPARE | \ - P4_CCCR_ESCR_SELECT_MASK | \ - P4_CCCR_ENABLE) - -/* HT mask */ -#define P4_CCCR_MASK_HT \ - (P4_CCCR_MASK | P4_CCCR_OVF_PMI_T1 | P4_CCCR_THREAD_ANY) - #define P4_GEN_ESCR_EMASK(class, name, bit) \ class##__##name = ((1 << bit) << P4_ESCR_EVENTMASK_SHIFT) #define P4_ESCR_EMASK_BIT(class, name) class##__##name @@ -127,6 +97,28 @@ #define P4_CONFIG_HT_SHIFT 63 #define P4_CONFIG_HT (1ULL << P4_CONFIG_HT_SHIFT) +/* + * The bits we allow to pass for RAW events + */ +#define P4_CONFIG_MASK_ESCR \ + P4_ESCR_EVENT_MASK | \ + P4_ESCR_EVENTMASK_MASK | \ + P4_ESCR_TAG_MASK | \ + P4_ESCR_TAG_ENABLE + +#define P4_CONFIG_MASK_CCCR \ + P4_CCCR_EDGE | \ + P4_CCCR_THRESHOLD_MASK | \ + P4_CCCR_COMPLEMENT | \ + P4_CCCR_COMPARE | \ + P4_CCCR_THREAD_ANY | \ + P4_CCCR_RESERVED + +/* some dangerous bits are reserved for kernel internals */ +#define P4_CONFIG_MASK \ + (p4_config_pack_escr(P4_CONFIG_MASK_ESCR)) | \ + (p4_config_pack_cccr(P4_CONFIG_MASK_CCCR)) + static inline bool p4_is_event_cascaded(u64 config) { u32 cccr = p4_config_unpack_cccr(config); diff --git a/arch/x86/include/asm/pgtable.h b/arch/x86/include/asm/pgtable.h index a34c785c5a63..ada823a13c7c 100644 --- a/arch/x86/include/asm/pgtable.h +++ b/arch/x86/include/asm/pgtable.h @@ -28,6 +28,8 @@ extern unsigned long empty_zero_page[PAGE_SIZE / sizeof(unsigned long)]; extern spinlock_t pgd_lock; extern struct list_head pgd_list; +extern struct mm_struct *pgd_page_get_mm(struct page *page); + #ifdef CONFIG_PARAVIRT #include <asm/paravirt.h> #else /* !CONFIG_PARAVIRT */ @@ -603,6 +605,8 @@ static inline void ptep_set_wrprotect(struct mm_struct *mm, pte_update(mm, addr, ptep); } +#define flush_tlb_fix_spurious_fault(vma, address) + /* * clone_pgd_range(pgd_t *dst, pgd_t *src, int count); * diff --git a/arch/x86/include/asm/pgtable_64.h b/arch/x86/include/asm/pgtable_64.h index 076052cd62be..f96ac9bedf75 100644 --- a/arch/x86/include/asm/pgtable_64.h +++ b/arch/x86/include/asm/pgtable_64.h @@ -102,6 +102,8 @@ static inline void native_pgd_clear(pgd_t *pgd) native_set_pgd(pgd, native_make_pgd(0)); } +extern void sync_global_pgds(unsigned long start, unsigned long end); + /* * Conversion functions: convert a page and protection to a page entry, * and a page entry and page directory to the page they refer to. diff --git a/arch/x86/include/asm/processor.h b/arch/x86/include/asm/processor.h index 325b7bdbebaa..cae9c3cb95cf 100644 --- a/arch/x86/include/asm/processor.h +++ b/arch/x86/include/asm/processor.h @@ -110,6 +110,8 @@ struct cpuinfo_x86 { u16 phys_proc_id; /* Core id: */ u16 cpu_core_id; + /* Compute unit id */ + u8 compute_unit_id; /* Index into per_cpu list: */ u16 cpu_index; #endif @@ -602,7 +604,7 @@ extern unsigned long mmu_cr4_features; static inline void set_in_cr4(unsigned long mask) { - unsigned cr4; + unsigned long cr4; mmu_cr4_features |= mask; cr4 = read_cr4(); @@ -612,7 +614,7 @@ static inline void set_in_cr4(unsigned long mask) static inline void clear_in_cr4(unsigned long mask) { - unsigned cr4; + unsigned long cr4; mmu_cr4_features &= ~mask; cr4 = read_cr4(); @@ -764,29 +766,6 @@ extern unsigned long idle_halt; extern unsigned long idle_nomwait; extern bool c1e_detected; -/* - * on systems with caches, caches must be flashed as the absolute - * last instruction before going into a suspended halt. Otherwise, - * dirty data can linger in the cache and become stale on resume, - * leading to strange errors. - * - * perform a variety of operations to guarantee that the compiler - * will not reorder instructions. wbinvd itself is serializing - * so the processor will not reorder. - * - * Systems without cache can just go into halt. - */ -static inline void wbinvd_halt(void) -{ - mb(); - /* check for clflush to determine if wbinvd is legal */ - if (cpu_has_clflush) - asm volatile("cli; wbinvd; 1: hlt; jmp 1b" : : : "memory"); - else - while (1) - halt(); -} - extern void enable_sep_cpu(void); extern int sysenter_setup(void); diff --git a/arch/x86/include/asm/setup.h b/arch/x86/include/asm/setup.h index ef292c792d74..d6763b139a84 100644 --- a/arch/x86/include/asm/setup.h +++ b/arch/x86/include/asm/setup.h @@ -93,6 +93,11 @@ void *extend_brk(size_t size, size_t align); : : "i" (sz)); \ } +/* Helper for reserving space for arrays of things */ +#define RESERVE_BRK_ARRAY(type, name, entries) \ + type *name; \ + RESERVE_BRK(name, sizeof(type) * entries) + #ifdef __i386__ void __init i386_start_kernel(void); diff --git a/arch/x86/include/asm/swiotlb.h b/arch/x86/include/asm/swiotlb.h index 8085277e1b8b..977f1761a25d 100644 --- a/arch/x86/include/asm/swiotlb.h +++ b/arch/x86/include/asm/swiotlb.h @@ -5,17 +5,26 @@ #ifdef CONFIG_SWIOTLB extern int swiotlb; -extern int __init pci_swiotlb_detect(void); +extern int __init pci_swiotlb_detect_override(void); +extern int __init pci_swiotlb_detect_4gb(void); extern void __init pci_swiotlb_init(void); +extern void __init pci_swiotlb_late_init(void); #else #define swiotlb 0 -static inline int pci_swiotlb_detect(void) +static inline int pci_swiotlb_detect_override(void) +{ + return 0; +} +static inline int pci_swiotlb_detect_4gb(void) { return 0; } static inline void pci_swiotlb_init(void) { } +static inline void pci_swiotlb_late_init(void) +{ +} #endif static inline void dma_mark_clean(void *addr, size_t size) {} diff --git a/arch/x86/include/asm/vmi.h b/arch/x86/include/asm/vmi.h deleted file mode 100644 index 61e08c0a2907..000000000000 --- a/arch/x86/include/asm/vmi.h +++ /dev/null @@ -1,269 +0,0 @@ -/* - * VMI interface definition - * - * Copyright (C) 2005, VMware, Inc. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or - * NON INFRINGEMENT. See the GNU General Public License for more - * details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - * - * Maintained by: Zachary Amsden zach@vmware.com - * - */ -#include <linux/types.h> - -/* - *--------------------------------------------------------------------- - * - * VMI Option ROM API - * - *--------------------------------------------------------------------- - */ -#define VMI_SIGNATURE 0x696d5663 /* "cVmi" */ - -#define PCI_VENDOR_ID_VMWARE 0x15AD -#define PCI_DEVICE_ID_VMWARE_VMI 0x0801 - -/* - * We use two version numbers for compatibility, with the major - * number signifying interface breakages, and the minor number - * interface extensions. - */ -#define VMI_API_REV_MAJOR 3 -#define VMI_API_REV_MINOR 0 - -#define VMI_CALL_CPUID 0 -#define VMI_CALL_WRMSR 1 -#define VMI_CALL_RDMSR 2 -#define VMI_CALL_SetGDT 3 -#define VMI_CALL_SetLDT 4 -#define VMI_CALL_SetIDT 5 -#define VMI_CALL_SetTR 6 -#define VMI_CALL_GetGDT 7 -#define VMI_CALL_GetLDT 8 -#define VMI_CALL_GetIDT 9 -#define VMI_CALL_GetTR 10 -#define VMI_CALL_WriteGDTEntry 11 -#define VMI_CALL_WriteLDTEntry 12 -#define VMI_CALL_WriteIDTEntry 13 -#define VMI_CALL_UpdateKernelStack 14 -#define VMI_CALL_SetCR0 15 -#define VMI_CALL_SetCR2 16 -#define VMI_CALL_SetCR3 17 -#define VMI_CALL_SetCR4 18 -#define VMI_CALL_GetCR0 19 -#define VMI_CALL_GetCR2 20 -#define VMI_CALL_GetCR3 21 -#define VMI_CALL_GetCR4 22 -#define VMI_CALL_WBINVD 23 -#define VMI_CALL_SetDR 24 -#define VMI_CALL_GetDR 25 -#define VMI_CALL_RDPMC 26 -#define VMI_CALL_RDTSC 27 -#define VMI_CALL_CLTS 28 -#define VMI_CALL_EnableInterrupts 29 -#define VMI_CALL_DisableInterrupts 30 -#define VMI_CALL_GetInterruptMask 31 -#define VMI_CALL_SetInterruptMask 32 -#define VMI_CALL_IRET 33 -#define VMI_CALL_SYSEXIT 34 -#define VMI_CALL_Halt 35 -#define VMI_CALL_Reboot 36 -#define VMI_CALL_Shutdown 37 -#define VMI_CALL_SetPxE 38 -#define VMI_CALL_SetPxELong 39 -#define VMI_CALL_UpdatePxE 40 -#define VMI_CALL_UpdatePxELong 41 -#define VMI_CALL_MachineToPhysical 42 -#define VMI_CALL_PhysicalToMachine 43 -#define VMI_CALL_AllocatePage 44 -#define VMI_CALL_ReleasePage 45 -#define VMI_CALL_InvalPage 46 -#define VMI_CALL_FlushTLB 47 -#define VMI_CALL_SetLinearMapping 48 - -#define VMI_CALL_SetIOPLMask 61 -#define VMI_CALL_SetInitialAPState 62 -#define VMI_CALL_APICWrite 63 -#define VMI_CALL_APICRead 64 -#define VMI_CALL_IODelay 65 -#define VMI_CALL_SetLazyMode 73 - -/* - *--------------------------------------------------------------------- - * - * MMU operation flags - * - *--------------------------------------------------------------------- - */ - -/* Flags used by VMI_{Allocate|Release}Page call */ -#define VMI_PAGE_PAE 0x10 /* Allocate PAE shadow */ -#define VMI_PAGE_CLONE 0x20 /* Clone from another shadow */ -#define VMI_PAGE_ZEROED 0x40 /* Page is pre-zeroed */ - - -/* Flags shared by Allocate|Release Page and PTE updates */ -#define VMI_PAGE_PT 0x01 -#define VMI_PAGE_PD 0x02 -#define VMI_PAGE_PDP 0x04 -#define VMI_PAGE_PML4 0x08 - -#define VMI_PAGE_NORMAL 0x00 /* for debugging */ - -/* Flags used by PTE updates */ -#define VMI_PAGE_CURRENT_AS 0x10 /* implies VMI_PAGE_VA_MASK is valid */ -#define VMI_PAGE_DEFER 0x20 /* may queue update until TLB inval */ -#define VMI_PAGE_VA_MASK 0xfffff000 - -#ifdef CONFIG_X86_PAE -#define VMI_PAGE_L1 (VMI_PAGE_PT | VMI_PAGE_PAE | VMI_PAGE_ZEROED) -#define VMI_PAGE_L2 (VMI_PAGE_PD | VMI_PAGE_PAE | VMI_PAGE_ZEROED) -#else -#define VMI_PAGE_L1 (VMI_PAGE_PT | VMI_PAGE_ZEROED) -#define VMI_PAGE_L2 (VMI_PAGE_PD | VMI_PAGE_ZEROED) -#endif - -/* Flags used by VMI_FlushTLB call */ -#define VMI_FLUSH_TLB 0x01 -#define VMI_FLUSH_GLOBAL 0x02 - -/* - *--------------------------------------------------------------------- - * - * VMI relocation definitions for ROM call get_reloc - * - *--------------------------------------------------------------------- - */ - -/* VMI Relocation types */ -#define VMI_RELOCATION_NONE 0 -#define VMI_RELOCATION_CALL_REL 1 -#define VMI_RELOCATION_JUMP_REL 2 -#define VMI_RELOCATION_NOP 3 - -#ifndef __ASSEMBLY__ -struct vmi_relocation_info { - unsigned char *eip; - unsigned char type; - unsigned char reserved[3]; -}; -#endif - - -/* - *--------------------------------------------------------------------- - * - * Generic ROM structures and definitions - * - *--------------------------------------------------------------------- - */ - -#ifndef __ASSEMBLY__ - -struct vrom_header { - u16 rom_signature; /* option ROM signature */ - u8 rom_length; /* ROM length in 512 byte chunks */ - u8 rom_entry[4]; /* 16-bit code entry point */ - u8 rom_pad0; /* 4-byte align pad */ - u32 vrom_signature; /* VROM identification signature */ - u8 api_version_min;/* Minor version of API */ - u8 api_version_maj;/* Major version of API */ - u8 jump_slots; /* Number of jump slots */ - u8 reserved1; /* Reserved for expansion */ - u32 virtual_top; /* Hypervisor virtual address start */ - u16 reserved2; /* Reserved for expansion */ - u16 license_offs; /* Offset to License string */ - u16 pci_header_offs;/* Offset to PCI OPROM header */ - u16 pnp_header_offs;/* Offset to PnP OPROM header */ - u32 rom_pad3; /* PnP reserverd / VMI reserved */ - u8 reserved[96]; /* Reserved for headers */ - char vmi_init[8]; /* VMI_Init jump point */ - char get_reloc[8]; /* VMI_GetRelocationInfo jump point */ -} __attribute__((packed)); - -struct pnp_header { - char sig[4]; - char rev; - char size; - short next; - short res; - long devID; - unsigned short manufacturer_offset; - unsigned short product_offset; -} __attribute__((packed)); - -struct pci_header { - char sig[4]; - short vendorID; - short deviceID; - short vpdData; - short size; - char rev; - char class; - char subclass; - char interface; - short chunks; - char rom_version_min; - char rom_version_maj; - char codetype; - char lastRom; - short reserved; -} __attribute__((packed)); - -/* Function prototypes for bootstrapping */ -#ifdef CONFIG_VMI -extern void vmi_init(void); -extern void vmi_activate(void); -extern void vmi_bringup(void); -#else -static inline void vmi_init(void) {} -static inline void vmi_activate(void) {} -static inline void vmi_bringup(void) {} -#endif - -/* State needed to start an application processor in an SMP system. */ -struct vmi_ap_state { - u32 cr0; - u32 cr2; - u32 cr3; - u32 cr4; - - u64 efer; - - u32 eip; - u32 eflags; - u32 eax; - u32 ebx; - u32 ecx; - u32 edx; - u32 esp; - u32 ebp; - u32 esi; - u32 edi; - u16 cs; - u16 ss; - u16 ds; - u16 es; - u16 fs; - u16 gs; - u16 ldtr; - - u16 gdtr_limit; - u32 gdtr_base; - u32 idtr_base; - u16 idtr_limit; -}; - -#endif diff --git a/arch/x86/include/asm/vmi_time.h b/arch/x86/include/asm/vmi_time.h deleted file mode 100644 index c6e0bee93e3c..000000000000 --- a/arch/x86/include/asm/vmi_time.h +++ /dev/null @@ -1,98 +0,0 @@ -/* - * VMI Time wrappers - * - * Copyright (C) 2006, VMware, Inc. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or - * NON INFRINGEMENT. See the GNU General Public License for more - * details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - * - * Send feedback to dhecht@vmware.com - * - */ - -#ifndef _ASM_X86_VMI_TIME_H -#define _ASM_X86_VMI_TIME_H - -/* - * Raw VMI call indices for timer functions - */ -#define VMI_CALL_GetCycleFrequency 66 -#define VMI_CALL_GetCycleCounter 67 -#define VMI_CALL_SetAlarm 68 -#define VMI_CALL_CancelAlarm 69 -#define VMI_CALL_GetWallclockTime 70 -#define VMI_CALL_WallclockUpdated 71 - -/* Cached VMI timer operations */ -extern struct vmi_timer_ops { - u64 (*get_cycle_frequency)(void); - u64 (*get_cycle_counter)(int); - u64 (*get_wallclock)(void); - int (*wallclock_updated)(void); - void (*set_alarm)(u32 flags, u64 expiry, u64 period); - void (*cancel_alarm)(u32 flags); -} vmi_timer_ops; - -/* Prototypes */ -extern void __init vmi_time_init(void); -extern unsigned long vmi_get_wallclock(void); -extern int vmi_set_wallclock(unsigned long now); -extern unsigned long long vmi_sched_clock(void); -extern unsigned long vmi_tsc_khz(void); - -#ifdef CONFIG_X86_LOCAL_APIC -extern void __devinit vmi_time_bsp_init(void); -extern void __devinit vmi_time_ap_init(void); -#endif - -/* - * When run under a hypervisor, a vcpu is always in one of three states: - * running, halted, or ready. The vcpu is in the 'running' state if it - * is executing. When the vcpu executes the halt interface, the vcpu - * enters the 'halted' state and remains halted until there is some work - * pending for the vcpu (e.g. an alarm expires, host I/O completes on - * behalf of virtual I/O). At this point, the vcpu enters the 'ready' - * state (waiting for the hypervisor to reschedule it). Finally, at any - * time when the vcpu is not in the 'running' state nor the 'halted' - * state, it is in the 'ready' state. - * - * Real time is advances while the vcpu is 'running', 'ready', or - * 'halted'. Stolen time is the time in which the vcpu is in the - * 'ready' state. Available time is the remaining time -- the vcpu is - * either 'running' or 'halted'. - * - * All three views of time are accessible through the VMI cycle - * counters. - */ - -/* The cycle counters. */ -#define VMI_CYCLES_REAL 0 -#define VMI_CYCLES_AVAILABLE 1 -#define VMI_CYCLES_STOLEN 2 - -/* The alarm interface 'flags' bits */ -#define VMI_ALARM_COUNTERS 2 - -#define VMI_ALARM_COUNTER_MASK 0x000000ff - -#define VMI_ALARM_WIRED_IRQ0 0x00000000 -#define VMI_ALARM_WIRED_LVTT 0x00010000 - -#define VMI_ALARM_IS_ONESHOT 0x00000000 -#define VMI_ALARM_IS_PERIODIC 0x00000100 - -#define CONFIG_VMI_ALARM_HZ 100 - -#endif /* _ASM_X86_VMI_TIME_H */ diff --git a/arch/x86/kernel/Makefile b/arch/x86/kernel/Makefile index fedf32a8c3ec..2c833d8c4141 100644 --- a/arch/x86/kernel/Makefile +++ b/arch/x86/kernel/Makefile @@ -34,7 +34,8 @@ GCOV_PROFILE_paravirt.o := n obj-y := process_$(BITS).o signal.o entry_$(BITS).o obj-y += traps.o irq.o irq_$(BITS).o dumpstack_$(BITS).o obj-y += time.o ioport.o ldt.o dumpstack.o -obj-y += setup.o x86_init.o i8259.o irqinit.o +obj-y += setup.o x86_init.o i8259.o irqinit.o jump_label.o +obj-$(CONFIG_IRQ_WORK) += irq_work.o obj-$(CONFIG_X86_VISWS) += visws_quirks.o obj-$(CONFIG_X86_32) += probe_roms_32.o obj-$(CONFIG_X86_32) += sys_i386_32.o i386_ksyms_32.o @@ -44,6 +45,7 @@ obj-y += bootflag.o e820.o obj-y += pci-dma.o quirks.o i8237.o topology.o kdebugfs.o obj-y += alternative.o i8253.o pci-nommu.o hw_breakpoint.o obj-y += tsc.o io_delay.o rtc.o +obj-y += pci-iommu_table.o obj-$(CONFIG_X86_TRAMPOLINE) += trampoline.o obj-y += process.o @@ -85,15 +87,15 @@ obj-$(CONFIG_DOUBLEFAULT) += doublefault_32.o obj-$(CONFIG_KGDB) += kgdb.o obj-$(CONFIG_VM86) += vm86_32.o obj-$(CONFIG_EARLY_PRINTK) += early_printk.o +obj-$(CONFIG_EARLY_PRINTK_MRST) += early_printk_mrst.o obj-$(CONFIG_HPET_TIMER) += hpet.o obj-$(CONFIG_APB_TIMER) += apb_timer.o -obj-$(CONFIG_K8_NB) += k8.o +obj-$(CONFIG_AMD_NB) += amd_nb.o obj-$(CONFIG_DEBUG_RODATA_TEST) += test_rodata.o obj-$(CONFIG_DEBUG_NX_TEST) += test_nx.o -obj-$(CONFIG_VMI) += vmi_32.o vmiclock_32.o obj-$(CONFIG_KVM_GUEST) += kvm.o obj-$(CONFIG_KVM_CLOCK) += kvmclock.o obj-$(CONFIG_PARAVIRT) += paravirt.o paravirt_patch_$(BITS).o @@ -106,6 +108,7 @@ obj-$(CONFIG_SCx200) += scx200.o scx200-y += scx200_32.o obj-$(CONFIG_OLPC) += olpc.o +obj-$(CONFIG_OLPC_XO1) += olpc-xo1.o obj-$(CONFIG_OLPC_OPENFIRMWARE) += olpc_ofw.o obj-$(CONFIG_X86_MRST) += mrst.o @@ -122,7 +125,6 @@ obj-$(CONFIG_SWIOTLB) += pci-swiotlb.o # 64 bit specific files ifeq ($(CONFIG_X86_64),y) obj-$(CONFIG_X86_UV) += tlb_uv.o bios_uv.o uv_irq.o uv_sysfs.o uv_time.o - obj-$(CONFIG_X86_PM_TIMER) += pmtimer_64.o obj-$(CONFIG_AUDIT) += audit_64.o obj-$(CONFIG_GART_IOMMU) += pci-gart_64.o aperture_64.o diff --git a/arch/x86/kernel/acpi/cstate.c b/arch/x86/kernel/acpi/cstate.c index fb16f17e59be..5812404a0d4c 100644 --- a/arch/x86/kernel/acpi/cstate.c +++ b/arch/x86/kernel/acpi/cstate.c @@ -13,6 +13,7 @@ #include <acpi/processor.h> #include <asm/acpi.h> +#include <asm/mwait.h> /* * Initialize bm_flags based on the CPU cache properties @@ -65,16 +66,6 @@ static struct cstate_entry __percpu *cpu_cstate_entry; /* per CPU ptr */ static short mwait_supported[ACPI_PROCESSOR_MAX_POWER]; -#define MWAIT_SUBSTATE_MASK (0xf) -#define MWAIT_CSTATE_MASK (0xf) -#define MWAIT_SUBSTATE_SIZE (4) - -#define CPUID_MWAIT_LEAF (5) -#define CPUID5_ECX_EXTENSIONS_SUPPORTED (0x1) -#define CPUID5_ECX_INTERRUPT_BREAK (0x2) - -#define MWAIT_ECX_INTERRUPT_BREAK (0x1) - #define NATIVE_CSTATE_BEYOND_HALT (2) static long acpi_processor_ffh_cstate_probe_cpu(void *_cx) diff --git a/arch/x86/kernel/alternative.c b/arch/x86/kernel/alternative.c index f65ab8b014c4..a36bb90aef53 100644 --- a/arch/x86/kernel/alternative.c +++ b/arch/x86/kernel/alternative.c @@ -195,7 +195,7 @@ static void __init_or_module add_nops(void *insns, unsigned int len) extern struct alt_instr __alt_instructions[], __alt_instructions_end[]; extern s32 __smp_locks[], __smp_locks_end[]; -static void *text_poke_early(void *addr, const void *opcode, size_t len); +void *text_poke_early(void *addr, const void *opcode, size_t len); /* Replace instructions with better alternatives for this CPU type. This runs before SMP is initialized to avoid SMP problems with @@ -522,7 +522,7 @@ void __init alternative_instructions(void) * instructions. And on the local CPU you need to be protected again NMI or MCE * handlers seeing an inconsistent instruction while you patch. */ -static void *__init_or_module text_poke_early(void *addr, const void *opcode, +void *__init_or_module text_poke_early(void *addr, const void *opcode, size_t len) { unsigned long flags; @@ -637,7 +637,72 @@ void *__kprobes text_poke_smp(void *addr, const void *opcode, size_t len) tpp.len = len; atomic_set(&stop_machine_first, 1); wrote_text = 0; - stop_machine(stop_machine_text_poke, (void *)&tpp, NULL); + /* Use __stop_machine() because the caller already got online_cpus. */ + __stop_machine(stop_machine_text_poke, (void *)&tpp, NULL); return addr; } +#if defined(CONFIG_DYNAMIC_FTRACE) || defined(HAVE_JUMP_LABEL) + +unsigned char ideal_nop5[IDEAL_NOP_SIZE_5]; + +void __init arch_init_ideal_nop5(void) +{ + extern const unsigned char ftrace_test_p6nop[]; + extern const unsigned char ftrace_test_nop5[]; + extern const unsigned char ftrace_test_jmp[]; + int faulted = 0; + + /* + * There is no good nop for all x86 archs. + * We will default to using the P6_NOP5, but first we + * will test to make sure that the nop will actually + * work on this CPU. If it faults, we will then + * go to a lesser efficient 5 byte nop. If that fails + * we then just use a jmp as our nop. This isn't the most + * efficient nop, but we can not use a multi part nop + * since we would then risk being preempted in the middle + * of that nop, and if we enabled tracing then, it might + * cause a system crash. + * + * TODO: check the cpuid to determine the best nop. + */ + asm volatile ( + "ftrace_test_jmp:" + "jmp ftrace_test_p6nop\n" + "nop\n" + "nop\n" + "nop\n" /* 2 byte jmp + 3 bytes */ + "ftrace_test_p6nop:" + P6_NOP5 + "jmp 1f\n" + "ftrace_test_nop5:" + ".byte 0x66,0x66,0x66,0x66,0x90\n" + "1:" + ".section .fixup, \"ax\"\n" + "2: movl $1, %0\n" + " jmp ftrace_test_nop5\n" + "3: movl $2, %0\n" + " jmp 1b\n" + ".previous\n" + _ASM_EXTABLE(ftrace_test_p6nop, 2b) + _ASM_EXTABLE(ftrace_test_nop5, 3b) + : "=r"(faulted) : "0" (faulted)); + + switch (faulted) { + case 0: + pr_info("converting mcount calls to 0f 1f 44 00 00\n"); + memcpy(ideal_nop5, ftrace_test_p6nop, IDEAL_NOP_SIZE_5); + break; + case 1: + pr_info("converting mcount calls to 66 66 66 66 90\n"); + memcpy(ideal_nop5, ftrace_test_nop5, IDEAL_NOP_SIZE_5); + break; + case 2: + pr_info("converting mcount calls to jmp . + 5\n"); + memcpy(ideal_nop5, ftrace_test_jmp, IDEAL_NOP_SIZE_5); + break; + } + +} +#endif diff --git a/arch/x86/kernel/amd_iommu.c b/arch/x86/kernel/amd_iommu.c index 679b6450382b..d2fdb0826df2 100644 --- a/arch/x86/kernel/amd_iommu.c +++ b/arch/x86/kernel/amd_iommu.c @@ -1,5 +1,5 @@ /* - * Copyright (C) 2007-2009 Advanced Micro Devices, Inc. + * Copyright (C) 2007-2010 Advanced Micro Devices, Inc. * Author: Joerg Roedel <joerg.roedel@amd.com> * Leo Duran <leo.duran@amd.com> * diff --git a/arch/x86/kernel/amd_iommu_init.c b/arch/x86/kernel/amd_iommu_init.c index 5a170cbbbed8..6e11c8134158 100644 --- a/arch/x86/kernel/amd_iommu_init.c +++ b/arch/x86/kernel/amd_iommu_init.c @@ -1,5 +1,5 @@ /* - * Copyright (C) 2007-2009 Advanced Micro Devices, Inc. + * Copyright (C) 2007-2010 Advanced Micro Devices, Inc. * Author: Joerg Roedel <joerg.roedel@amd.com> * Leo Duran <leo.duran@amd.com> * @@ -31,7 +31,7 @@ #include <asm/iommu.h> #include <asm/gart.h> #include <asm/x86_init.h> - +#include <asm/iommu_table.h> /* * definitions for the ACPI scanning code */ @@ -194,6 +194,39 @@ static inline unsigned long tbl_size(int entry_size) return 1UL << shift; } +/* Access to l1 and l2 indexed register spaces */ + +static u32 iommu_read_l1(struct amd_iommu *iommu, u16 l1, u8 address) +{ + u32 val; + + pci_write_config_dword(iommu->dev, 0xf8, (address | l1 << 16)); + pci_read_config_dword(iommu->dev, 0xfc, &val); + return val; +} + +static void iommu_write_l1(struct amd_iommu *iommu, u16 l1, u8 address, u32 val) +{ + pci_write_config_dword(iommu->dev, 0xf8, (address | l1 << 16 | 1 << 31)); + pci_write_config_dword(iommu->dev, 0xfc, val); + pci_write_config_dword(iommu->dev, 0xf8, (address | l1 << 16)); +} + +static u32 iommu_read_l2(struct amd_iommu *iommu, u8 address) +{ + u32 val; + + pci_write_config_dword(iommu->dev, 0xf0, address); + pci_read_config_dword(iommu->dev, 0xf4, &val); + return val; +} + +static void iommu_write_l2(struct amd_iommu *iommu, u8 address, u32 val) +{ + pci_write_config_dword(iommu->dev, 0xf0, (address | 1 << 8)); + pci_write_config_dword(iommu->dev, 0xf4, val); +} + /**************************************************************************** * * AMD IOMMU MMIO register space handling functions @@ -619,6 +652,7 @@ static void __init init_iommu_from_pci(struct amd_iommu *iommu) { int cap_ptr = iommu->cap_ptr; u32 range, misc; + int i, j; pci_read_config_dword(iommu->dev, cap_ptr + MMIO_CAP_HDR_OFFSET, &iommu->cap); @@ -633,12 +667,29 @@ static void __init init_iommu_from_pci(struct amd_iommu *iommu) MMIO_GET_LD(range)); iommu->evt_msi_num = MMIO_MSI_NUM(misc); - if (is_rd890_iommu(iommu->dev)) { - pci_read_config_dword(iommu->dev, 0xf0, &iommu->cache_cfg[0]); - pci_read_config_dword(iommu->dev, 0xf4, &iommu->cache_cfg[1]); - pci_read_config_dword(iommu->dev, 0xf8, &iommu->cache_cfg[2]); - pci_read_config_dword(iommu->dev, 0xfc, &iommu->cache_cfg[3]); - } + if (!is_rd890_iommu(iommu->dev)) + return; + + /* + * Some rd890 systems may not be fully reconfigured by the BIOS, so + * it's necessary for us to store this information so it can be + * reprogrammed on resume + */ + + pci_read_config_dword(iommu->dev, iommu->cap_ptr + 4, + &iommu->stored_addr_lo); + pci_read_config_dword(iommu->dev, iommu->cap_ptr + 8, + &iommu->stored_addr_hi); + + /* Low bit locks writes to configuration space */ + iommu->stored_addr_lo &= ~1; + + for (i = 0; i < 6; i++) + for (j = 0; j < 0x12; j++) + iommu->stored_l1[i][j] = iommu_read_l1(iommu, i, j); + + for (i = 0; i < 0x83; i++) + iommu->stored_l2[i] = iommu_read_l2(iommu, i); } /* @@ -1127,14 +1178,53 @@ static void iommu_init_flags(struct amd_iommu *iommu) iommu_feature_enable(iommu, CONTROL_COHERENT_EN); } -static void iommu_apply_quirks(struct amd_iommu *iommu) +static void iommu_apply_resume_quirks(struct amd_iommu *iommu) { - if (is_rd890_iommu(iommu->dev)) { - pci_write_config_dword(iommu->dev, 0xf0, iommu->cache_cfg[0]); - pci_write_config_dword(iommu->dev, 0xf4, iommu->cache_cfg[1]); - pci_write_config_dword(iommu->dev, 0xf8, iommu->cache_cfg[2]); - pci_write_config_dword(iommu->dev, 0xfc, iommu->cache_cfg[3]); - } + int i, j; + u32 ioc_feature_control; + struct pci_dev *pdev = NULL; + + /* RD890 BIOSes may not have completely reconfigured the iommu */ + if (!is_rd890_iommu(iommu->dev)) + return; + + /* + * First, we need to ensure that the iommu is enabled. This is + * controlled by a register in the northbridge + */ + pdev = pci_get_bus_and_slot(iommu->dev->bus->number, PCI_DEVFN(0, 0)); + + if (!pdev) + return; + + /* Select Northbridge indirect register 0x75 and enable writing */ + pci_write_config_dword(pdev, 0x60, 0x75 | (1 << 7)); + pci_read_config_dword(pdev, 0x64, &ioc_feature_control); + + /* Enable the iommu */ + if (!(ioc_feature_control & 0x1)) + pci_write_config_dword(pdev, 0x64, ioc_feature_control | 1); + + pci_dev_put(pdev); + + /* Restore the iommu BAR */ + pci_write_config_dword(iommu->dev, iommu->cap_ptr + 4, + iommu->stored_addr_lo); + pci_write_config_dword(iommu->dev, iommu->cap_ptr + 8, + iommu->stored_addr_hi); + + /* Restore the l1 indirect regs for each of the 6 l1s */ + for (i = 0; i < 6; i++) + for (j = 0; j < 0x12; j++) + iommu_write_l1(iommu, i, j, iommu->stored_l1[i][j]); + + /* Restore the l2 indirect regs */ + for (i = 0; i < 0x83; i++) + iommu_write_l2(iommu, i, iommu->stored_l2[i]); + + /* Lock PCI setup registers */ + pci_write_config_dword(iommu->dev, iommu->cap_ptr + 4, + iommu->stored_addr_lo | 1); } /* @@ -1147,7 +1237,6 @@ static void enable_iommus(void) for_each_iommu(iommu) { iommu_disable(iommu); - iommu_apply_quirks(iommu); iommu_init_flags(iommu); iommu_set_device_table(iommu); iommu_enable_command_buffer(iommu); @@ -1173,6 +1262,11 @@ static void disable_iommus(void) static int amd_iommu_resume(struct sys_device *dev) { + struct amd_iommu *iommu; + + for_each_iommu(iommu) + iommu_apply_resume_quirks(iommu); + /* re-load the hardware */ enable_iommus(); @@ -1405,13 +1499,13 @@ static int __init early_amd_iommu_detect(struct acpi_table_header *table) return 0; } -void __init amd_iommu_detect(void) +int __init amd_iommu_detect(void) { if (no_iommu || (iommu_detected && !gart_iommu_aperture)) - return; + return -ENODEV; if (amd_iommu_disabled) - return; + return -ENODEV; if (acpi_table_parse("IVRS", early_amd_iommu_detect) == 0) { iommu_detected = 1; @@ -1420,7 +1514,9 @@ void __init amd_iommu_detect(void) /* Make sure ACS will be enabled */ pci_request_acs(); + return 1; } + return -ENODEV; } /**************************************************************************** @@ -1451,3 +1547,8 @@ static int __init parse_amd_iommu_options(char *str) __setup("amd_iommu_dump", parse_amd_iommu_dump); __setup("amd_iommu=", parse_amd_iommu_options); + +IOMMU_INIT_FINISH(amd_iommu_detect, + gart_iommu_hole_init, + 0, + 0); diff --git a/arch/x86/kernel/k8.c b/arch/x86/kernel/amd_nb.c index 0f7bc20cfcde..8f6463d8ed0d 100644 --- a/arch/x86/kernel/k8.c +++ b/arch/x86/kernel/amd_nb.c @@ -8,21 +8,19 @@ #include <linux/errno.h> #include <linux/module.h> #include <linux/spinlock.h> -#include <asm/k8.h> - -int num_k8_northbridges; -EXPORT_SYMBOL(num_k8_northbridges); +#include <asm/amd_nb.h> static u32 *flush_words; struct pci_device_id k8_nb_ids[] = { { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_K8_NB_MISC) }, { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_10H_NB_MISC) }, + { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_15H_NB_MISC) }, {} }; EXPORT_SYMBOL(k8_nb_ids); -struct pci_dev **k8_northbridges; +struct k8_northbridge_info k8_northbridges; EXPORT_SYMBOL(k8_northbridges); static struct pci_dev *next_k8_northbridge(struct pci_dev *dev) @@ -40,36 +38,45 @@ int cache_k8_northbridges(void) int i; struct pci_dev *dev; - if (num_k8_northbridges) + if (k8_northbridges.num) return 0; dev = NULL; while ((dev = next_k8_northbridge(dev)) != NULL) - num_k8_northbridges++; + k8_northbridges.num++; + + /* some CPU families (e.g. family 0x11) do not support GART */ + if (boot_cpu_data.x86 == 0xf || boot_cpu_data.x86 == 0x10 || + boot_cpu_data.x86 == 0x15) + k8_northbridges.gart_supported = 1; - k8_northbridges = kmalloc((num_k8_northbridges + 1) * sizeof(void *), - GFP_KERNEL); - if (!k8_northbridges) + k8_northbridges.nb_misc = kmalloc((k8_northbridges.num + 1) * + sizeof(void *), GFP_KERNEL); + if (!k8_northbridges.nb_misc) return -ENOMEM; - if (!num_k8_northbridges) { - k8_northbridges[0] = NULL; + if (!k8_northbridges.num) { + k8_northbridges.nb_misc[0] = NULL; return 0; } - flush_words = kmalloc(num_k8_northbridges * sizeof(u32), GFP_KERNEL); - if (!flush_words) { - kfree(k8_northbridges); - return -ENOMEM; + if (k8_northbridges.gart_supported) { + flush_words = kmalloc(k8_northbridges.num * sizeof(u32), + GFP_KERNEL); + if (!flush_words) { + kfree(k8_northbridges.nb_misc); + return -ENOMEM; + } } dev = NULL; i = 0; while ((dev = next_k8_northbridge(dev)) != NULL) { - k8_northbridges[i] = dev; - pci_read_config_dword(dev, 0x9c, &flush_words[i++]); + k8_northbridges.nb_misc[i] = dev; + if (k8_northbridges.gart_supported) + pci_read_config_dword(dev, 0x9c, &flush_words[i++]); } - k8_northbridges[i] = NULL; + k8_northbridges.nb_misc[i] = NULL; return 0; } EXPORT_SYMBOL_GPL(cache_k8_northbridges); @@ -93,22 +100,25 @@ void k8_flush_garts(void) unsigned long flags; static DEFINE_SPINLOCK(gart_lock); + if (!k8_northbridges.gart_supported) + return; + /* Avoid races between AGP and IOMMU. In theory it's not needed but I'm not sure if the hardware won't lose flush requests when another is pending. This whole thing is so expensive anyways that it doesn't matter to serialize more. -AK */ spin_lock_irqsave(&gart_lock, flags); flushed = 0; - for (i = 0; i < num_k8_northbridges; i++) { - pci_write_config_dword(k8_northbridges[i], 0x9c, + for (i = 0; i < k8_northbridges.num; i++) { + pci_write_config_dword(k8_northbridges.nb_misc[i], 0x9c, flush_words[i]|1); flushed++; } - for (i = 0; i < num_k8_northbridges; i++) { + for (i = 0; i < k8_northbridges.num; i++) { u32 w; /* Make sure the hardware actually executed the flush*/ for (;;) { - pci_read_config_dword(k8_northbridges[i], + pci_read_config_dword(k8_northbridges.nb_misc[i], 0x9c, &w); if (!(w & 1)) break; diff --git a/arch/x86/kernel/apb_timer.c b/arch/x86/kernel/apb_timer.c index 8dd77800ff5d..92543c73cf8e 100644 --- a/arch/x86/kernel/apb_timer.c +++ b/arch/x86/kernel/apb_timer.c @@ -231,34 +231,6 @@ static void apbt_restart_clocksource(struct clocksource *cs) apbt_start_counter(phy_cs_timer_id); } -/* Setup IRQ routing via IOAPIC */ -#ifdef CONFIG_SMP -static void apbt_setup_irq(struct apbt_dev *adev) -{ - struct irq_chip *chip; - struct irq_desc *desc; - - /* timer0 irq has been setup early */ - if (adev->irq == 0) - return; - desc = irq_to_desc(adev->irq); - chip = get_irq_chip(adev->irq); - disable_irq(adev->irq); - desc->status |= IRQ_MOVE_PCNTXT; - irq_set_affinity(adev->irq, cpumask_of(adev->cpu)); - /* APB timer irqs are set up as mp_irqs, timer is edge triggerred */ - set_irq_chip_and_handler_name(adev->irq, chip, handle_edge_irq, "edge"); - enable_irq(adev->irq); - if (system_state == SYSTEM_BOOTING) - if (request_irq(adev->irq, apbt_interrupt_handler, - IRQF_TIMER | IRQF_DISABLED | IRQF_NOBALANCING, - adev->name, adev)) { - printk(KERN_ERR "Failed request IRQ for APBT%d\n", - adev->num); - } -} -#endif - static void apbt_enable_int(int n) { unsigned long ctrl = apbt_readl(n, APBTMR_N_CONTROL); @@ -334,6 +306,27 @@ static int __init apbt_clockevent_register(void) } #ifdef CONFIG_SMP + +static void apbt_setup_irq(struct apbt_dev *adev) +{ + /* timer0 irq has been setup early */ + if (adev->irq == 0) + return; + + if (system_state == SYSTEM_BOOTING) { + irq_modify_status(adev->irq, 0, IRQ_MOVE_PCNTXT); + /* APB timer irqs are set up as mp_irqs, timer is edge type */ + __set_irq_handler(adev->irq, handle_edge_irq, 0, "edge"); + if (request_irq(adev->irq, apbt_interrupt_handler, + IRQF_TIMER | IRQF_DISABLED | IRQF_NOBALANCING, + adev->name, adev)) { + printk(KERN_ERR "Failed request IRQ for APBT%d\n", + adev->num); + } + } else + enable_irq(adev->irq); +} + /* Should be called with per cpu */ void apbt_setup_secondary_clock(void) { @@ -343,7 +336,7 @@ void apbt_setup_secondary_clock(void) /* Don't register boot CPU clockevent */ cpu = smp_processor_id(); - if (cpu == boot_cpu_id) + if (!cpu) return; /* * We need to calculate the scaled math multiplication factor for @@ -389,16 +382,17 @@ static int apbt_cpuhp_notify(struct notifier_block *n, switch (action & 0xf) { case CPU_DEAD: + disable_irq(adev->irq); apbt_disable_int(cpu); - if (system_state == SYSTEM_RUNNING) + if (system_state == SYSTEM_RUNNING) { pr_debug("skipping APBT CPU %lu offline\n", cpu); - else if (adev) { + } else if (adev) { pr_debug("APBT clockevent for cpu %lu offline\n", cpu); free_irq(adev->irq, adev); } break; default: - pr_debug(KERN_INFO "APBT notified %lu, no action\n", action); + pr_debug("APBT notified %lu, no action\n", action); } return NOTIFY_OK; } @@ -552,7 +546,7 @@ bad_count: pr_debug("APB CS going back %lx:%lx:%lx ", t2, last_read, t2 - last_read); bad_count_x3: - pr_debug(KERN_INFO "tripple check enforced\n"); + pr_debug("triple check enforced\n"); t0 = apbt_readl(phy_cs_timer_id, APBTMR_N_CURRENT_VALUE); udelay(1); diff --git a/arch/x86/kernel/aperture_64.c b/arch/x86/kernel/aperture_64.c index a2e0caf26e17..b3a16e8f0703 100644 --- a/arch/x86/kernel/aperture_64.c +++ b/arch/x86/kernel/aperture_64.c @@ -27,7 +27,7 @@ #include <asm/gart.h> #include <asm/pci-direct.h> #include <asm/dma.h> -#include <asm/k8.h> +#include <asm/amd_nb.h> #include <asm/x86_init.h> int gart_iommu_aperture; @@ -307,7 +307,7 @@ void __init early_gart_iommu_check(void) continue; ctl = read_pci_config(bus, slot, 3, AMD64_GARTAPERTURECTL); - aper_enabled = ctl & AMD64_GARTEN; + aper_enabled = ctl & GARTEN; aper_order = (ctl >> 1) & 7; aper_size = (32 * 1024 * 1024) << aper_order; aper_base = read_pci_config(bus, slot, 3, AMD64_GARTAPERTUREBASE) & 0x7fff; @@ -362,7 +362,7 @@ void __init early_gart_iommu_check(void) continue; ctl = read_pci_config(bus, slot, 3, AMD64_GARTAPERTURECTL); - ctl &= ~AMD64_GARTEN; + ctl &= ~GARTEN; write_pci_config(bus, slot, 3, AMD64_GARTAPERTURECTL, ctl); } } @@ -371,7 +371,7 @@ void __init early_gart_iommu_check(void) static int __initdata printed_gart_size_msg; -void __init gart_iommu_hole_init(void) +int __init gart_iommu_hole_init(void) { u32 agp_aper_base = 0, agp_aper_order = 0; u32 aper_size, aper_alloc = 0, aper_order = 0, last_aper_order = 0; @@ -381,7 +381,7 @@ void __init gart_iommu_hole_init(void) if (gart_iommu_aperture_disabled || !fix_aperture || !early_pci_allowed()) - return; + return -ENODEV; printk(KERN_INFO "Checking aperture...\n"); @@ -463,8 +463,9 @@ out: unsigned long n = (32 * 1024 * 1024) << last_aper_order; insert_aperture_resource((u32)last_aper_base, n); + return 1; } - return; + return 0; } if (!fallback_aper_force) { @@ -500,13 +501,18 @@ out: panic("Not enough memory for aperture"); } } else { - return; + return 0; } /* Fix up the north bridges */ for (i = 0; i < ARRAY_SIZE(bus_dev_ranges); i++) { - int bus; - int dev_base, dev_limit; + int bus, dev_base, dev_limit; + + /* + * Don't enable translation yet but enable GART IO and CPU + * accesses and set DISTLBWALKPRB since GART table memory is UC. + */ + u32 ctl = DISTLBWALKPRB | aper_order << 1; bus = bus_dev_ranges[i].bus; dev_base = bus_dev_ranges[i].dev_base; @@ -515,13 +521,12 @@ out: if (!early_is_k8_nb(read_pci_config(bus, slot, 3, 0x00))) continue; - /* Don't enable translation yet. That is done later. - Assume this BIOS didn't initialise the GART so - just overwrite all previous bits */ - write_pci_config(bus, slot, 3, AMD64_GARTAPERTURECTL, aper_order << 1); + write_pci_config(bus, slot, 3, AMD64_GARTAPERTURECTL, ctl); write_pci_config(bus, slot, 3, AMD64_GARTAPERTUREBASE, aper_alloc >> 25); } } set_up_gart_resume(aper_order, aper_alloc); + + return 1; } diff --git a/arch/x86/kernel/apic/apic.c b/arch/x86/kernel/apic/apic.c index e3b534cda49a..850657d1b0ed 100644 --- a/arch/x86/kernel/apic/apic.c +++ b/arch/x86/kernel/apic/apic.c @@ -52,6 +52,7 @@ #include <asm/mce.h> #include <asm/kvm_para.h> #include <asm/tsc.h> +#include <asm/atomic.h> unsigned int num_processors; @@ -370,38 +371,87 @@ static void __setup_APIC_LVTT(unsigned int clocks, int oneshot, int irqen) } /* - * Setup extended LVT, AMD specific (K8, family 10h) + * Setup extended LVT, AMD specific * - * Vector mappings are hard coded. On K8 only offset 0 (APIC500) and - * MCE interrupts are supported. Thus MCE offset must be set to 0. + * Software should use the LVT offsets the BIOS provides. The offsets + * are determined by the subsystems using it like those for MCE + * threshold or IBS. On K8 only offset 0 (APIC500) and MCE interrupts + * are supported. Beginning with family 10h at least 4 offsets are + * available. * - * If mask=1, the LVT entry does not generate interrupts while mask=0 - * enables the vector. See also the BKDGs. + * Since the offsets must be consistent for all cores, we keep track + * of the LVT offsets in software and reserve the offset for the same + * vector also to be used on other cores. An offset is freed by + * setting the entry to APIC_EILVT_MASKED. + * + * If the BIOS is right, there should be no conflicts. Otherwise a + * "[Firmware Bug]: ..." error message is generated. However, if + * software does not properly determines the offsets, it is not + * necessarily a BIOS bug. */ -#define APIC_EILVT_LVTOFF_MCE 0 -#define APIC_EILVT_LVTOFF_IBS 1 +static atomic_t eilvt_offsets[APIC_EILVT_NR_MAX]; -static void setup_APIC_eilvt(u8 lvt_off, u8 vector, u8 msg_type, u8 mask) +static inline int eilvt_entry_is_changeable(unsigned int old, unsigned int new) { - unsigned long reg = (lvt_off << 4) + APIC_EILVTn(0); - unsigned int v = (mask << 16) | (msg_type << 8) | vector; - - apic_write(reg, v); + return (old & APIC_EILVT_MASKED) + || (new == APIC_EILVT_MASKED) + || ((new & ~APIC_EILVT_MASKED) == old); } -u8 setup_APIC_eilvt_mce(u8 vector, u8 msg_type, u8 mask) +static unsigned int reserve_eilvt_offset(int offset, unsigned int new) { - setup_APIC_eilvt(APIC_EILVT_LVTOFF_MCE, vector, msg_type, mask); - return APIC_EILVT_LVTOFF_MCE; + unsigned int rsvd; /* 0: uninitialized */ + + if (offset >= APIC_EILVT_NR_MAX) + return ~0; + + rsvd = atomic_read(&eilvt_offsets[offset]) & ~APIC_EILVT_MASKED; + do { + if (rsvd && + !eilvt_entry_is_changeable(rsvd, new)) + /* may not change if vectors are different */ + return rsvd; + rsvd = atomic_cmpxchg(&eilvt_offsets[offset], rsvd, new); + } while (rsvd != new); + + return new; } -u8 setup_APIC_eilvt_ibs(u8 vector, u8 msg_type, u8 mask) +/* + * If mask=1, the LVT entry does not generate interrupts while mask=0 + * enables the vector. See also the BKDGs. + */ + +int setup_APIC_eilvt(u8 offset, u8 vector, u8 msg_type, u8 mask) { - setup_APIC_eilvt(APIC_EILVT_LVTOFF_IBS, vector, msg_type, mask); - return APIC_EILVT_LVTOFF_IBS; + unsigned long reg = APIC_EILVTn(offset); + unsigned int new, old, reserved; + + new = (mask << 16) | (msg_type << 8) | vector; + old = apic_read(reg); + reserved = reserve_eilvt_offset(offset, new); + + if (reserved != new) { + pr_err(FW_BUG "cpu %d, try to setup vector 0x%x, but " + "vector 0x%x was already reserved by another core, " + "APIC%lX=0x%x\n", + smp_processor_id(), new, reserved, reg, old); + return -EINVAL; + } + + if (!eilvt_entry_is_changeable(old, new)) { + pr_err(FW_BUG "cpu %d, try to setup vector 0x%x but " + "register already in use, APIC%lX=0x%x\n", + smp_processor_id(), new, reg, old); + return -EBUSY; + } + + apic_write(reg, new); + + return 0; } -EXPORT_SYMBOL_GPL(setup_APIC_eilvt_ibs); +EXPORT_SYMBOL_GPL(setup_APIC_eilvt); /* * Program the next event, relative to now @@ -1665,10 +1715,7 @@ int __init APIC_init_uniprocessor(void) } #endif -#ifndef CONFIG_SMP - enable_IR_x2apic(); default_setup_apic_routing(); -#endif verify_local_APIC(); connect_bsp_APIC(); diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c index 5c5b8f3dddb5..8ae808d110f4 100644 --- a/arch/x86/kernel/apic/io_apic.c +++ b/arch/x86/kernel/apic/io_apic.c @@ -131,13 +131,9 @@ struct irq_pin_list { struct irq_pin_list *next; }; -static struct irq_pin_list *get_one_free_irq_2_pin(int node) +static struct irq_pin_list *alloc_irq_pin_list(int node) { - struct irq_pin_list *pin; - - pin = kzalloc_node(sizeof(*pin), GFP_ATOMIC, node); - - return pin; + return kzalloc_node(sizeof(struct irq_pin_list), GFP_KERNEL, node); } /* irq_cfg is indexed by the sum of all RTEs in all I/O APICs. */ @@ -150,10 +146,7 @@ static struct irq_cfg irq_cfgx[NR_IRQS]; int __init arch_early_irq_init(void) { struct irq_cfg *cfg; - struct irq_desc *desc; - int count; - int node; - int i; + int count, node, i; if (!legacy_pic->nr_legacy_irqs) { nr_irqs_gsi = 0; @@ -162,13 +155,15 @@ int __init arch_early_irq_init(void) cfg = irq_cfgx; count = ARRAY_SIZE(irq_cfgx); - node= cpu_to_node(boot_cpu_id); + node = cpu_to_node(0); + + /* Make sure the legacy interrupts are marked in the bitmap */ + irq_reserve_irqs(0, legacy_pic->nr_legacy_irqs); for (i = 0; i < count; i++) { - desc = irq_to_desc(i); - desc->chip_data = &cfg[i]; - zalloc_cpumask_var_node(&cfg[i].domain, GFP_NOWAIT, node); - zalloc_cpumask_var_node(&cfg[i].old_domain, GFP_NOWAIT, node); + set_irq_chip_data(i, &cfg[i]); + zalloc_cpumask_var_node(&cfg[i].domain, GFP_KERNEL, node); + zalloc_cpumask_var_node(&cfg[i].old_domain, GFP_KERNEL, node); /* * For legacy IRQ's, start with assigning irq0 to irq15 to * IRQ0_VECTOR to IRQ15_VECTOR on cpu 0. @@ -183,170 +178,88 @@ int __init arch_early_irq_init(void) } #ifdef CONFIG_SPARSE_IRQ -struct irq_cfg *irq_cfg(unsigned int irq) +static struct irq_cfg *irq_cfg(unsigned int irq) { - struct irq_cfg *cfg = NULL; - struct irq_desc *desc; - - desc = irq_to_desc(irq); - if (desc) - cfg = desc->chip_data; - - return cfg; + return get_irq_chip_data(irq); } -static struct irq_cfg *get_one_free_irq_cfg(int node) +static struct irq_cfg *alloc_irq_cfg(unsigned int irq, int node) { struct irq_cfg *cfg; - cfg = kzalloc_node(sizeof(*cfg), GFP_ATOMIC, node); - if (cfg) { - if (!zalloc_cpumask_var_node(&cfg->domain, GFP_ATOMIC, node)) { - kfree(cfg); - cfg = NULL; - } else if (!zalloc_cpumask_var_node(&cfg->old_domain, - GFP_ATOMIC, node)) { - free_cpumask_var(cfg->domain); - kfree(cfg); - cfg = NULL; - } - } - + cfg = kzalloc_node(sizeof(*cfg), GFP_KERNEL, node); + if (!cfg) + return NULL; + if (!zalloc_cpumask_var_node(&cfg->domain, GFP_KERNEL, node)) + goto out_cfg; + if (!zalloc_cpumask_var_node(&cfg->old_domain, GFP_KERNEL, node)) + goto out_domain; return cfg; +out_domain: + free_cpumask_var(cfg->domain); +out_cfg: + kfree(cfg); + return NULL; } -int arch_init_chip_data(struct irq_desc *desc, int node) -{ - struct irq_cfg *cfg; - - cfg = desc->chip_data; - if (!cfg) { - desc->chip_data = get_one_free_irq_cfg(node); - if (!desc->chip_data) { - printk(KERN_ERR "can not alloc irq_cfg\n"); - BUG_ON(1); - } - } - - return 0; -} - -/* for move_irq_desc */ -static void -init_copy_irq_2_pin(struct irq_cfg *old_cfg, struct irq_cfg *cfg, int node) +static void free_irq_cfg(unsigned int at, struct irq_cfg *cfg) { - struct irq_pin_list *old_entry, *head, *tail, *entry; - - cfg->irq_2_pin = NULL; - old_entry = old_cfg->irq_2_pin; - if (!old_entry) - return; - - entry = get_one_free_irq_2_pin(node); - if (!entry) + if (!cfg) return; + set_irq_chip_data(at, NULL); + free_cpumask_var(cfg->domain); + free_cpumask_var(cfg->old_domain); + kfree(cfg); +} - entry->apic = old_entry->apic; - entry->pin = old_entry->pin; - head = entry; - tail = entry; - old_entry = old_entry->next; - while (old_entry) { - entry = get_one_free_irq_2_pin(node); - if (!entry) { - entry = head; - while (entry) { - head = entry->next; - kfree(entry); - entry = head; - } - /* still use the old one */ - return; - } - entry->apic = old_entry->apic; - entry->pin = old_entry->pin; - tail->next = entry; - tail = entry; - old_entry = old_entry->next; - } +#else - tail->next = NULL; - cfg->irq_2_pin = head; +struct irq_cfg *irq_cfg(unsigned int irq) +{ + return irq < nr_irqs ? irq_cfgx + irq : NULL; } -static void free_irq_2_pin(struct irq_cfg *old_cfg, struct irq_cfg *cfg) +static struct irq_cfg *alloc_irq_cfg(unsigned int irq, int node) { - struct irq_pin_list *entry, *next; - - if (old_cfg->irq_2_pin == cfg->irq_2_pin) - return; + return irq_cfgx + irq; +} - entry = old_cfg->irq_2_pin; +static inline void free_irq_cfg(unsigned int at, struct irq_cfg *cfg) { } - while (entry) { - next = entry->next; - kfree(entry); - entry = next; - } - old_cfg->irq_2_pin = NULL; -} +#endif -void arch_init_copy_chip_data(struct irq_desc *old_desc, - struct irq_desc *desc, int node) +static struct irq_cfg *alloc_irq_and_cfg_at(unsigned int at, int node) { + int res = irq_alloc_desc_at(at, node); struct irq_cfg *cfg; - struct irq_cfg *old_cfg; - - cfg = get_one_free_irq_cfg(node); - if (!cfg) - return; - - desc->chip_data = cfg; - - old_cfg = old_desc->chip_data; - - cfg->vector = old_cfg->vector; - cfg->move_in_progress = old_cfg->move_in_progress; - cpumask_copy(cfg->domain, old_cfg->domain); - cpumask_copy(cfg->old_domain, old_cfg->old_domain); - - init_copy_irq_2_pin(old_cfg, cfg, node); -} + if (res < 0) { + if (res != -EEXIST) + return NULL; + cfg = get_irq_chip_data(at); + if (cfg) + return cfg; + } -static void free_irq_cfg(struct irq_cfg *cfg) -{ - free_cpumask_var(cfg->domain); - free_cpumask_var(cfg->old_domain); - kfree(cfg); + cfg = alloc_irq_cfg(at, node); + if (cfg) + set_irq_chip_data(at, cfg); + else + irq_free_desc(at); + return cfg; } -void arch_free_chip_data(struct irq_desc *old_desc, struct irq_desc *desc) +static int alloc_irq_from(unsigned int from, int node) { - struct irq_cfg *old_cfg, *cfg; - - old_cfg = old_desc->chip_data; - cfg = desc->chip_data; - - if (old_cfg == cfg) - return; - - if (old_cfg) { - free_irq_2_pin(old_cfg, cfg); - free_irq_cfg(old_cfg); - old_desc->chip_data = NULL; - } + return irq_alloc_desc_from(from, node); } -/* end for move_irq_desc */ -#else -struct irq_cfg *irq_cfg(unsigned int irq) +static void free_irq_at(unsigned int at, struct irq_cfg *cfg) { - return irq < nr_irqs ? irq_cfgx + irq : NULL; + free_irq_cfg(at, cfg); + irq_free_desc(at); } -#endif - struct io_apic { unsigned int index; unsigned int unused[3]; @@ -451,7 +364,7 @@ __ioapic_write_entry(int apic, int pin, struct IO_APIC_route_entry e) io_apic_write(apic, 0x10 + 2*pin, eu.w1); } -void ioapic_write_entry(int apic, int pin, struct IO_APIC_route_entry e) +static void ioapic_write_entry(int apic, int pin, struct IO_APIC_route_entry e) { unsigned long flags; raw_spin_lock_irqsave(&ioapic_lock, flags); @@ -481,7 +394,7 @@ static void ioapic_mask_entry(int apic, int pin) * fast in the common case, and fast for shared ISA-space IRQs. */ static int -add_pin_to_irq_node_nopanic(struct irq_cfg *cfg, int node, int apic, int pin) +__add_pin_to_irq_node(struct irq_cfg *cfg, int node, int apic, int pin) { struct irq_pin_list **last, *entry; @@ -493,7 +406,7 @@ add_pin_to_irq_node_nopanic(struct irq_cfg *cfg, int node, int apic, int pin) last = &entry->next; } - entry = get_one_free_irq_2_pin(node); + entry = alloc_irq_pin_list(node); if (!entry) { printk(KERN_ERR "can not alloc irq_pin_list (%d,%d,%d)\n", node, apic, pin); @@ -508,7 +421,7 @@ add_pin_to_irq_node_nopanic(struct irq_cfg *cfg, int node, int apic, int pin) static void add_pin_to_irq_node(struct irq_cfg *cfg, int node, int apic, int pin) { - if (add_pin_to_irq_node_nopanic(cfg, node, apic, pin)) + if (__add_pin_to_irq_node(cfg, node, apic, pin)) panic("IO-APIC: failed to add irq-pin. Can not proceed\n"); } @@ -571,11 +484,6 @@ static void __unmask_and_level_IO_APIC_irq(struct irq_pin_list *entry) IO_APIC_REDIR_LEVEL_TRIGGER, NULL); } -static void __unmask_IO_APIC_irq(struct irq_cfg *cfg) -{ - io_apic_modify_irq(cfg, ~IO_APIC_REDIR_MASKED, 0, NULL); -} - static void io_apic_sync(struct irq_pin_list *entry) { /* @@ -587,44 +495,37 @@ static void io_apic_sync(struct irq_pin_list *entry) readl(&io_apic->data); } -static void __mask_IO_APIC_irq(struct irq_cfg *cfg) +static void mask_ioapic(struct irq_cfg *cfg) { + unsigned long flags; + + raw_spin_lock_irqsave(&ioapic_lock, flags); io_apic_modify_irq(cfg, ~0, IO_APIC_REDIR_MASKED, &io_apic_sync); + raw_spin_unlock_irqrestore(&ioapic_lock, flags); } -static void mask_IO_APIC_irq_desc(struct irq_desc *desc) +static void mask_ioapic_irq(struct irq_data *data) { - struct irq_cfg *cfg = desc->chip_data; - unsigned long flags; - - BUG_ON(!cfg); + mask_ioapic(data->chip_data); +} - raw_spin_lock_irqsave(&ioapic_lock, flags); - __mask_IO_APIC_irq(cfg); - raw_spin_unlock_irqrestore(&ioapic_lock, flags); +static void __unmask_ioapic(struct irq_cfg *cfg) +{ + io_apic_modify_irq(cfg, ~IO_APIC_REDIR_MASKED, 0, NULL); } -static void unmask_IO_APIC_irq_desc(struct irq_desc *desc) +static void unmask_ioapic(struct irq_cfg *cfg) { - struct irq_cfg *cfg = desc->chip_data; unsigned long flags; raw_spin_lock_irqsave(&ioapic_lock, flags); - __unmask_IO_APIC_irq(cfg); + __unmask_ioapic(cfg); raw_spin_unlock_irqrestore(&ioapic_lock, flags); } -static void mask_IO_APIC_irq(unsigned int irq) +static void unmask_ioapic_irq(struct irq_data *data) { - struct irq_desc *desc = irq_to_desc(irq); - - mask_IO_APIC_irq_desc(desc); -} -static void unmask_IO_APIC_irq(unsigned int irq) -{ - struct irq_desc *desc = irq_to_desc(irq); - - unmask_IO_APIC_irq_desc(desc); + unmask_ioapic(data->chip_data); } static void clear_IO_APIC_pin(unsigned int apic, unsigned int pin) @@ -694,14 +595,14 @@ struct IO_APIC_route_entry **alloc_ioapic_entries(void) struct IO_APIC_route_entry **ioapic_entries; ioapic_entries = kzalloc(sizeof(*ioapic_entries) * nr_ioapics, - GFP_ATOMIC); + GFP_KERNEL); if (!ioapic_entries) return 0; for (apic = 0; apic < nr_ioapics; apic++) { ioapic_entries[apic] = kzalloc(sizeof(struct IO_APIC_route_entry) * - nr_ioapic_registers[apic], GFP_ATOMIC); + nr_ioapic_registers[apic], GFP_KERNEL); if (!ioapic_entries[apic]) goto nomem; } @@ -1259,7 +1160,6 @@ void __setup_vector_irq(int cpu) /* Initialize vector_irq on a new cpu */ int irq, vector; struct irq_cfg *cfg; - struct irq_desc *desc; /* * vector_lock will make sure that we don't run into irq vector @@ -1268,9 +1168,10 @@ void __setup_vector_irq(int cpu) */ raw_spin_lock(&vector_lock); /* Mark the inuse vectors */ - for_each_irq_desc(irq, desc) { - cfg = desc->chip_data; - + for_each_active_irq(irq) { + cfg = get_irq_chip_data(irq); + if (!cfg) + continue; /* * If it is a legacy IRQ handled by the legacy PIC, this cpu * will be part of the irq_cfg's domain. @@ -1327,17 +1228,17 @@ static inline int IO_APIC_irq_trigger(int irq) } #endif -static void ioapic_register_intr(int irq, struct irq_desc *desc, unsigned long trigger) +static void ioapic_register_intr(unsigned int irq, unsigned long trigger) { if ((trigger == IOAPIC_AUTO && IO_APIC_irq_trigger(irq)) || trigger == IOAPIC_LEVEL) - desc->status |= IRQ_LEVEL; + irq_set_status_flags(irq, IRQ_LEVEL); else - desc->status &= ~IRQ_LEVEL; + irq_clear_status_flags(irq, IRQ_LEVEL); - if (irq_remapped(irq)) { - desc->status |= IRQ_MOVE_PCNTXT; + if (irq_remapped(get_irq_chip_data(irq))) { + irq_set_status_flags(irq, IRQ_MOVE_PCNTXT); if (trigger) set_irq_chip_and_handler_name(irq, &ir_ioapic_chip, handle_fasteoi_irq, @@ -1358,10 +1259,10 @@ static void ioapic_register_intr(int irq, struct irq_desc *desc, unsigned long t handle_edge_irq, "edge"); } -int setup_ioapic_entry(int apic_id, int irq, - struct IO_APIC_route_entry *entry, - unsigned int destination, int trigger, - int polarity, int vector, int pin) +static int setup_ioapic_entry(int apic_id, int irq, + struct IO_APIC_route_entry *entry, + unsigned int destination, int trigger, + int polarity, int vector, int pin) { /* * add it to the IO-APIC irq-routing table: @@ -1382,21 +1283,7 @@ int setup_ioapic_entry(int apic_id, int irq, if (index < 0) panic("Failed to allocate IRTE for ioapic %d\n", apic_id); - memset(&irte, 0, sizeof(irte)); - - irte.present = 1; - irte.dst_mode = apic->irq_dest_mode; - /* - * Trigger mode in the IRTE will always be edge, and the - * actual level or edge trigger will be setup in the IO-APIC - * RTE. This will help simplify level triggered irq migration. - * For more details, see the comments above explainig IO-APIC - * irq migration in the presence of interrupt-remapping. - */ - irte.trigger_mode = 0; - irte.dlvry_mode = apic->irq_delivery_mode; - irte.vector = vector; - irte.dest_id = IRTE_DEST(destination); + prepare_irte(&irte, vector, destination); /* Set source-id of interrupt request */ set_ioapic_sid(&irte, apic_id); @@ -1431,18 +1318,14 @@ int setup_ioapic_entry(int apic_id, int irq, return 0; } -static void setup_IO_APIC_irq(int apic_id, int pin, unsigned int irq, struct irq_desc *desc, - int trigger, int polarity) +static void setup_ioapic_irq(int apic_id, int pin, unsigned int irq, + struct irq_cfg *cfg, int trigger, int polarity) { - struct irq_cfg *cfg; struct IO_APIC_route_entry entry; unsigned int dest; if (!IO_APIC_IRQ(irq)) return; - - cfg = desc->chip_data; - /* * For legacy irqs, cfg->domain starts with cpu 0 for legacy * controllers like 8259. Now that IO-APIC can handle this irq, update @@ -1471,9 +1354,9 @@ static void setup_IO_APIC_irq(int apic_id, int pin, unsigned int irq, struct irq return; } - ioapic_register_intr(irq, desc, trigger); + ioapic_register_intr(irq, trigger); if (irq < legacy_pic->nr_legacy_irqs) - legacy_pic->chip->mask(irq); + legacy_pic->mask(irq); ioapic_write_entry(apic_id, pin, entry); } @@ -1484,11 +1367,9 @@ static struct { static void __init setup_IO_APIC_irqs(void) { - int apic_id, pin, idx, irq; - int notcon = 0; - struct irq_desc *desc; + int apic_id, pin, idx, irq, notcon = 0; + int node = cpu_to_node(0); struct irq_cfg *cfg; - int node = cpu_to_node(boot_cpu_id); apic_printk(APIC_VERBOSE, KERN_DEBUG "init IO_APIC IRQs\n"); @@ -1525,19 +1406,17 @@ static void __init setup_IO_APIC_irqs(void) apic->multi_timer_check(apic_id, irq)) continue; - desc = irq_to_desc_alloc_node(irq, node); - if (!desc) { - printk(KERN_INFO "can not get irq_desc for %d\n", irq); + cfg = alloc_irq_and_cfg_at(irq, node); + if (!cfg) continue; - } - cfg = desc->chip_data; + add_pin_to_irq_node(cfg, node, apic_id, pin); /* * don't mark it in pin_programmed, so later acpi could * set it correctly when irq < 16 */ - setup_IO_APIC_irq(apic_id, pin, irq, desc, - irq_trigger(idx), irq_polarity(idx)); + setup_ioapic_irq(apic_id, pin, irq, cfg, irq_trigger(idx), + irq_polarity(idx)); } if (notcon) @@ -1552,9 +1431,7 @@ static void __init setup_IO_APIC_irqs(void) */ void setup_IO_APIC_irq_extra(u32 gsi) { - int apic_id = 0, pin, idx, irq; - int node = cpu_to_node(boot_cpu_id); - struct irq_desc *desc; + int apic_id = 0, pin, idx, irq, node = cpu_to_node(0); struct irq_cfg *cfg; /* @@ -1570,18 +1447,15 @@ void setup_IO_APIC_irq_extra(u32 gsi) return; irq = pin_2_irq(idx, apic_id, pin); -#ifdef CONFIG_SPARSE_IRQ - desc = irq_to_desc(irq); - if (desc) + + /* Only handle the non legacy irqs on secondary ioapics */ + if (apic_id == 0 || irq < NR_IRQS_LEGACY) return; -#endif - desc = irq_to_desc_alloc_node(irq, node); - if (!desc) { - printk(KERN_INFO "can not get irq_desc for %d\n", irq); + + cfg = alloc_irq_and_cfg_at(irq, node); + if (!cfg) return; - } - cfg = desc->chip_data; add_pin_to_irq_node(cfg, node, apic_id, pin); if (test_bit(pin, mp_ioapic_routing[apic_id].pin_programmed)) { @@ -1591,7 +1465,7 @@ void setup_IO_APIC_irq_extra(u32 gsi) } set_bit(pin, mp_ioapic_routing[apic_id].pin_programmed); - setup_IO_APIC_irq(apic_id, pin, irq, desc, + setup_ioapic_irq(apic_id, pin, irq, cfg, irq_trigger(idx), irq_polarity(idx)); } @@ -1642,7 +1516,6 @@ __apicdebuginit(void) print_IO_APIC(void) union IO_APIC_reg_03 reg_03; unsigned long flags; struct irq_cfg *cfg; - struct irq_desc *desc; unsigned int irq; printk(KERN_DEBUG "number of MP IRQ sources: %d.\n", mp_irq_entries); @@ -1729,10 +1602,10 @@ __apicdebuginit(void) print_IO_APIC(void) } } printk(KERN_DEBUG "IRQ to pin mappings:\n"); - for_each_irq_desc(irq, desc) { + for_each_active_irq(irq) { struct irq_pin_list *entry; - cfg = desc->chip_data; + cfg = get_irq_chip_data(irq); if (!cfg) continue; entry = cfg->irq_2_pin; @@ -2239,29 +2112,26 @@ static int __init timer_irq_works(void) * an edge even if it isn't on the 8259A... */ -static unsigned int startup_ioapic_irq(unsigned int irq) +static unsigned int startup_ioapic_irq(struct irq_data *data) { - int was_pending = 0; + int was_pending = 0, irq = data->irq; unsigned long flags; - struct irq_cfg *cfg; raw_spin_lock_irqsave(&ioapic_lock, flags); if (irq < legacy_pic->nr_legacy_irqs) { - legacy_pic->chip->mask(irq); + legacy_pic->mask(irq); if (legacy_pic->irq_pending(irq)) was_pending = 1; } - cfg = irq_cfg(irq); - __unmask_IO_APIC_irq(cfg); + __unmask_ioapic(data->chip_data); raw_spin_unlock_irqrestore(&ioapic_lock, flags); return was_pending; } -static int ioapic_retrigger_irq(unsigned int irq) +static int ioapic_retrigger_irq(struct irq_data *data) { - - struct irq_cfg *cfg = irq_cfg(irq); + struct irq_cfg *cfg = data->chip_data; unsigned long flags; raw_spin_lock_irqsave(&vector_lock, flags); @@ -2312,7 +2182,7 @@ static void __target_IO_APIC_irq(unsigned int irq, unsigned int dest, struct irq * With interrupt-remapping, destination information comes * from interrupt-remapping table entry. */ - if (!irq_remapped(irq)) + if (!irq_remapped(cfg)) io_apic_write(apic, 0x11 + pin*2, dest); reg = io_apic_read(apic, 0x10 + pin*2); reg &= ~IO_APIC_REDIR_VECTOR_MASK; @@ -2322,65 +2192,46 @@ static void __target_IO_APIC_irq(unsigned int irq, unsigned int dest, struct irq } /* - * Either sets desc->affinity to a valid value, and returns + * Either sets data->affinity to a valid value, and returns * ->cpu_mask_to_apicid of that in dest_id, or returns -1 and - * leaves desc->affinity untouched. + * leaves data->affinity untouched. */ -unsigned int -set_desc_affinity(struct irq_desc *desc, const struct cpumask *mask, - unsigned int *dest_id) +int __ioapic_set_affinity(struct irq_data *data, const struct cpumask *mask, + unsigned int *dest_id) { - struct irq_cfg *cfg; - unsigned int irq; + struct irq_cfg *cfg = data->chip_data; if (!cpumask_intersects(mask, cpu_online_mask)) return -1; - irq = desc->irq; - cfg = desc->chip_data; - if (assign_irq_vector(irq, cfg, mask)) + if (assign_irq_vector(data->irq, data->chip_data, mask)) return -1; - cpumask_copy(desc->affinity, mask); + cpumask_copy(data->affinity, mask); - *dest_id = apic->cpu_mask_to_apicid_and(desc->affinity, cfg->domain); + *dest_id = apic->cpu_mask_to_apicid_and(mask, cfg->domain); return 0; } static int -set_ioapic_affinity_irq_desc(struct irq_desc *desc, const struct cpumask *mask) +ioapic_set_affinity(struct irq_data *data, const struct cpumask *mask, + bool force) { - struct irq_cfg *cfg; + unsigned int dest, irq = data->irq; unsigned long flags; - unsigned int dest; - unsigned int irq; - int ret = -1; - - irq = desc->irq; - cfg = desc->chip_data; + int ret; raw_spin_lock_irqsave(&ioapic_lock, flags); - ret = set_desc_affinity(desc, mask, &dest); + ret = __ioapic_set_affinity(data, mask, &dest); if (!ret) { /* Only the high 8 bits are valid. */ dest = SET_APIC_LOGICAL_ID(dest); - __target_IO_APIC_irq(irq, dest, cfg); + __target_IO_APIC_irq(irq, dest, data->chip_data); } raw_spin_unlock_irqrestore(&ioapic_lock, flags); - return ret; } -static int -set_ioapic_affinity_irq(unsigned int irq, const struct cpumask *mask) -{ - struct irq_desc *desc; - - desc = irq_to_desc(irq); - - return set_ioapic_affinity_irq_desc(desc, mask); -} - #ifdef CONFIG_INTR_REMAP /* @@ -2395,24 +2246,21 @@ set_ioapic_affinity_irq(unsigned int irq, const struct cpumask *mask) * the interrupt-remapping table entry. */ static int -migrate_ioapic_irq_desc(struct irq_desc *desc, const struct cpumask *mask) +ir_ioapic_set_affinity(struct irq_data *data, const struct cpumask *mask, + bool force) { - struct irq_cfg *cfg; + struct irq_cfg *cfg = data->chip_data; + unsigned int dest, irq = data->irq; struct irte irte; - unsigned int dest; - unsigned int irq; - int ret = -1; if (!cpumask_intersects(mask, cpu_online_mask)) - return ret; + return -EINVAL; - irq = desc->irq; if (get_irte(irq, &irte)) - return ret; + return -EBUSY; - cfg = desc->chip_data; if (assign_irq_vector(irq, cfg, mask)) - return ret; + return -EBUSY; dest = apic->cpu_mask_to_apicid_and(cfg->domain, mask); @@ -2427,29 +2275,14 @@ migrate_ioapic_irq_desc(struct irq_desc *desc, const struct cpumask *mask) if (cfg->move_in_progress) send_cleanup_vector(cfg); - cpumask_copy(desc->affinity, mask); - + cpumask_copy(data->affinity, mask); return 0; } -/* - * Migrates the IRQ destination in the process context. - */ -static int set_ir_ioapic_affinity_irq_desc(struct irq_desc *desc, - const struct cpumask *mask) -{ - return migrate_ioapic_irq_desc(desc, mask); -} -static int set_ir_ioapic_affinity_irq(unsigned int irq, - const struct cpumask *mask) -{ - struct irq_desc *desc = irq_to_desc(irq); - - return set_ir_ioapic_affinity_irq_desc(desc, mask); -} #else -static inline int set_ir_ioapic_affinity_irq_desc(struct irq_desc *desc, - const struct cpumask *mask) +static inline int +ir_ioapic_set_affinity(struct irq_data *data, const struct cpumask *mask, + bool force) { return 0; } @@ -2511,10 +2344,8 @@ unlock: irq_exit(); } -static void __irq_complete_move(struct irq_desc **descp, unsigned vector) +static void __irq_complete_move(struct irq_cfg *cfg, unsigned vector) { - struct irq_desc *desc = *descp; - struct irq_cfg *cfg = desc->chip_data; unsigned me; if (likely(!cfg->move_in_progress)) @@ -2526,31 +2357,28 @@ static void __irq_complete_move(struct irq_desc **descp, unsigned vector) send_cleanup_vector(cfg); } -static void irq_complete_move(struct irq_desc **descp) +static void irq_complete_move(struct irq_cfg *cfg) { - __irq_complete_move(descp, ~get_irq_regs()->orig_ax); + __irq_complete_move(cfg, ~get_irq_regs()->orig_ax); } void irq_force_complete_move(int irq) { - struct irq_desc *desc = irq_to_desc(irq); - struct irq_cfg *cfg = desc->chip_data; + struct irq_cfg *cfg = get_irq_chip_data(irq); if (!cfg) return; - __irq_complete_move(&desc, cfg->vector); + __irq_complete_move(cfg, cfg->vector); } #else -static inline void irq_complete_move(struct irq_desc **descp) {} +static inline void irq_complete_move(struct irq_cfg *cfg) { } #endif -static void ack_apic_edge(unsigned int irq) +static void ack_apic_edge(struct irq_data *data) { - struct irq_desc *desc = irq_to_desc(irq); - - irq_complete_move(&desc); - move_native_irq(irq); + irq_complete_move(data->chip_data); + move_native_irq(data->irq); ack_APIC_irq(); } @@ -2572,10 +2400,12 @@ atomic_t irq_mis_count; * Otherwise, we simulate the EOI message manually by changing the trigger * mode to edge and then back to level, with RTE being masked during this. */ -static void __eoi_ioapic_irq(unsigned int irq, struct irq_cfg *cfg) +static void eoi_ioapic_irq(unsigned int irq, struct irq_cfg *cfg) { struct irq_pin_list *entry; + unsigned long flags; + raw_spin_lock_irqsave(&ioapic_lock, flags); for_each_irq_pin(entry, cfg->irq_2_pin) { if (mp_ioapics[entry->apic].apicver >= 0x20) { /* @@ -2584,7 +2414,7 @@ static void __eoi_ioapic_irq(unsigned int irq, struct irq_cfg *cfg) * intr-remapping table entry. Hence for the io-apic * EOI we use the pin number. */ - if (irq_remapped(irq)) + if (irq_remapped(cfg)) io_apic_eoi(entry->apic, entry->pin); else io_apic_eoi(entry->apic, cfg->vector); @@ -2593,36 +2423,22 @@ static void __eoi_ioapic_irq(unsigned int irq, struct irq_cfg *cfg) __unmask_and_level_IO_APIC_irq(entry); } } -} - -static void eoi_ioapic_irq(struct irq_desc *desc) -{ - struct irq_cfg *cfg; - unsigned long flags; - unsigned int irq; - - irq = desc->irq; - cfg = desc->chip_data; - - raw_spin_lock_irqsave(&ioapic_lock, flags); - __eoi_ioapic_irq(irq, cfg); raw_spin_unlock_irqrestore(&ioapic_lock, flags); } -static void ack_apic_level(unsigned int irq) +static void ack_apic_level(struct irq_data *data) { + struct irq_cfg *cfg = data->chip_data; + int i, do_unmask_irq = 0, irq = data->irq; struct irq_desc *desc = irq_to_desc(irq); unsigned long v; - int i; - struct irq_cfg *cfg; - int do_unmask_irq = 0; - irq_complete_move(&desc); + irq_complete_move(cfg); #ifdef CONFIG_GENERIC_PENDING_IRQ /* If we are moving the irq we need to mask it */ if (unlikely(desc->status & IRQ_MOVE_PENDING)) { do_unmask_irq = 1; - mask_IO_APIC_irq_desc(desc); + mask_ioapic(cfg); } #endif @@ -2658,7 +2474,6 @@ static void ack_apic_level(unsigned int irq) * we use the above logic (mask+edge followed by unmask+level) from * Manfred Spraul to clear the remote IRR. */ - cfg = desc->chip_data; i = cfg->vector; v = apic_read(APIC_TMR + ((i & ~0x1f) >> 1)); @@ -2678,7 +2493,7 @@ static void ack_apic_level(unsigned int irq) if (!(v & (1 << (i & 0x1f)))) { atomic_inc(&irq_mis_count); - eoi_ioapic_irq(desc); + eoi_ioapic_irq(irq, cfg); } /* Now we can move and renable the irq */ @@ -2709,61 +2524,57 @@ static void ack_apic_level(unsigned int irq) * accurate and is causing problems then it is a hardware bug * and you can go talk to the chipset vendor about it. */ - cfg = desc->chip_data; if (!io_apic_level_ack_pending(cfg)) move_masked_irq(irq); - unmask_IO_APIC_irq_desc(desc); + unmask_ioapic(cfg); } } #ifdef CONFIG_INTR_REMAP -static void ir_ack_apic_edge(unsigned int irq) +static void ir_ack_apic_edge(struct irq_data *data) { ack_APIC_irq(); } -static void ir_ack_apic_level(unsigned int irq) +static void ir_ack_apic_level(struct irq_data *data) { - struct irq_desc *desc = irq_to_desc(irq); - ack_APIC_irq(); - eoi_ioapic_irq(desc); + eoi_ioapic_irq(data->irq, data->chip_data); } #endif /* CONFIG_INTR_REMAP */ static struct irq_chip ioapic_chip __read_mostly = { - .name = "IO-APIC", - .startup = startup_ioapic_irq, - .mask = mask_IO_APIC_irq, - .unmask = unmask_IO_APIC_irq, - .ack = ack_apic_edge, - .eoi = ack_apic_level, + .name = "IO-APIC", + .irq_startup = startup_ioapic_irq, + .irq_mask = mask_ioapic_irq, + .irq_unmask = unmask_ioapic_irq, + .irq_ack = ack_apic_edge, + .irq_eoi = ack_apic_level, #ifdef CONFIG_SMP - .set_affinity = set_ioapic_affinity_irq, + .irq_set_affinity = ioapic_set_affinity, #endif - .retrigger = ioapic_retrigger_irq, + .irq_retrigger = ioapic_retrigger_irq, }; static struct irq_chip ir_ioapic_chip __read_mostly = { - .name = "IR-IO-APIC", - .startup = startup_ioapic_irq, - .mask = mask_IO_APIC_irq, - .unmask = unmask_IO_APIC_irq, + .name = "IR-IO-APIC", + .irq_startup = startup_ioapic_irq, + .irq_mask = mask_ioapic_irq, + .irq_unmask = unmask_ioapic_irq, #ifdef CONFIG_INTR_REMAP - .ack = ir_ack_apic_edge, - .eoi = ir_ack_apic_level, + .irq_ack = ir_ack_apic_edge, + .irq_eoi = ir_ack_apic_level, #ifdef CONFIG_SMP - .set_affinity = set_ir_ioapic_affinity_irq, + .irq_set_affinity = ir_ioapic_set_affinity, #endif #endif - .retrigger = ioapic_retrigger_irq, + .irq_retrigger = ioapic_retrigger_irq, }; static inline void init_IO_APIC_traps(void) { - int irq; - struct irq_desc *desc; struct irq_cfg *cfg; + unsigned int irq; /* * NOTE! The local APIC isn't very good at handling @@ -2776,8 +2587,8 @@ static inline void init_IO_APIC_traps(void) * Also, we've got to be careful not to trash gate * 0x80, because int 0x80 is hm, kind of importantish. ;) */ - for_each_irq_desc(irq, desc) { - cfg = desc->chip_data; + for_each_active_irq(irq) { + cfg = get_irq_chip_data(irq); if (IO_APIC_IRQ(irq) && cfg && !cfg->vector) { /* * Hmm.. We don't have an entry for this, @@ -2788,7 +2599,7 @@ static inline void init_IO_APIC_traps(void) legacy_pic->make_irq(irq); else /* Strange. Oh, well.. */ - desc->chip = &no_irq_chip; + set_irq_chip(irq, &no_irq_chip); } } } @@ -2797,7 +2608,7 @@ static inline void init_IO_APIC_traps(void) * The local APIC irq-chip implementation: */ -static void mask_lapic_irq(unsigned int irq) +static void mask_lapic_irq(struct irq_data *data) { unsigned long v; @@ -2805,7 +2616,7 @@ static void mask_lapic_irq(unsigned int irq) apic_write(APIC_LVT0, v | APIC_LVT_MASKED); } -static void unmask_lapic_irq(unsigned int irq) +static void unmask_lapic_irq(struct irq_data *data) { unsigned long v; @@ -2813,21 +2624,21 @@ static void unmask_lapic_irq(unsigned int irq) apic_write(APIC_LVT0, v & ~APIC_LVT_MASKED); } -static void ack_lapic_irq(unsigned int irq) +static void ack_lapic_irq(struct irq_data *data) { ack_APIC_irq(); } static struct irq_chip lapic_chip __read_mostly = { .name = "local-APIC", - .mask = mask_lapic_irq, - .unmask = unmask_lapic_irq, - .ack = ack_lapic_irq, + .irq_mask = mask_lapic_irq, + .irq_unmask = unmask_lapic_irq, + .irq_ack = ack_lapic_irq, }; -static void lapic_register_intr(int irq, struct irq_desc *desc) +static void lapic_register_intr(int irq) { - desc->status &= ~IRQ_LEVEL; + irq_clear_status_flags(irq, IRQ_LEVEL); set_irq_chip_and_handler_name(irq, &lapic_chip, handle_edge_irq, "edge"); } @@ -2930,9 +2741,8 @@ int timer_through_8259 __initdata; */ static inline void __init check_timer(void) { - struct irq_desc *desc = irq_to_desc(0); - struct irq_cfg *cfg = desc->chip_data; - int node = cpu_to_node(boot_cpu_id); + struct irq_cfg *cfg = get_irq_chip_data(0); + int node = cpu_to_node(0); int apic1, pin1, apic2, pin2; unsigned long flags; int no_pin1 = 0; @@ -2942,7 +2752,7 @@ static inline void __init check_timer(void) /* * get/set the timer IRQ vector: */ - legacy_pic->chip->mask(0); + legacy_pic->mask(0); assign_irq_vector(0, cfg, apic->target_cpus()); /* @@ -3001,7 +2811,7 @@ static inline void __init check_timer(void) add_pin_to_irq_node(cfg, node, apic1, pin1); setup_timer_IRQ0_pin(apic1, pin1, cfg->vector); } else { - /* for edge trigger, setup_IO_APIC_irq already + /* for edge trigger, setup_ioapic_irq already * leave it unmasked. * so only need to unmask if it is level-trigger * do we really have level trigger timer? @@ -3009,12 +2819,12 @@ static inline void __init check_timer(void) int idx; idx = find_irq_entry(apic1, pin1, mp_INT); if (idx != -1 && irq_trigger(idx)) - unmask_IO_APIC_irq_desc(desc); + unmask_ioapic(cfg); } if (timer_irq_works()) { if (nmi_watchdog == NMI_IO_APIC) { setup_nmi(); - legacy_pic->chip->unmask(0); + legacy_pic->unmask(0); } if (disable_timer_pin_1 > 0) clear_IO_APIC_pin(0, pin1); @@ -3037,14 +2847,14 @@ static inline void __init check_timer(void) */ replace_pin_at_irq_node(cfg, node, apic1, pin1, apic2, pin2); setup_timer_IRQ0_pin(apic2, pin2, cfg->vector); - legacy_pic->chip->unmask(0); + legacy_pic->unmask(0); if (timer_irq_works()) { apic_printk(APIC_QUIET, KERN_INFO "....... works.\n"); timer_through_8259 = 1; if (nmi_watchdog == NMI_IO_APIC) { - legacy_pic->chip->mask(0); + legacy_pic->mask(0); setup_nmi(); - legacy_pic->chip->unmask(0); + legacy_pic->unmask(0); } goto out; } @@ -3052,7 +2862,7 @@ static inline void __init check_timer(void) * Cleanup, just in case ... */ local_irq_disable(); - legacy_pic->chip->mask(0); + legacy_pic->mask(0); clear_IO_APIC_pin(apic2, pin2); apic_printk(APIC_QUIET, KERN_INFO "....... failed.\n"); } @@ -3069,16 +2879,16 @@ static inline void __init check_timer(void) apic_printk(APIC_QUIET, KERN_INFO "...trying to set up timer as Virtual Wire IRQ...\n"); - lapic_register_intr(0, desc); + lapic_register_intr(0); apic_write(APIC_LVT0, APIC_DM_FIXED | cfg->vector); /* Fixed mode */ - legacy_pic->chip->unmask(0); + legacy_pic->unmask(0); if (timer_irq_works()) { apic_printk(APIC_QUIET, KERN_INFO "..... works.\n"); goto out; } local_irq_disable(); - legacy_pic->chip->mask(0); + legacy_pic->mask(0); apic_write(APIC_LVT0, APIC_LVT_MASKED | APIC_DM_FIXED | cfg->vector); apic_printk(APIC_QUIET, KERN_INFO "..... failed.\n"); @@ -3244,49 +3054,42 @@ device_initcall(ioapic_init_sysfs); /* * Dynamic irq allocate and deallocation */ -unsigned int create_irq_nr(unsigned int irq_want, int node) +unsigned int create_irq_nr(unsigned int from, int node) { - /* Allocate an unused irq */ - unsigned int irq; - unsigned int new; + struct irq_cfg *cfg; unsigned long flags; - struct irq_cfg *cfg_new = NULL; - struct irq_desc *desc_new = NULL; - - irq = 0; - if (irq_want < nr_irqs_gsi) - irq_want = nr_irqs_gsi; - - raw_spin_lock_irqsave(&vector_lock, flags); - for (new = irq_want; new < nr_irqs; new++) { - desc_new = irq_to_desc_alloc_node(new, node); - if (!desc_new) { - printk(KERN_INFO "can not get irq_desc for %d\n", new); - continue; - } - cfg_new = desc_new->chip_data; - - if (cfg_new->vector != 0) - continue; + unsigned int ret = 0; + int irq; - desc_new = move_irq_desc(desc_new, node); - cfg_new = desc_new->chip_data; + if (from < nr_irqs_gsi) + from = nr_irqs_gsi; - if (__assign_irq_vector(new, cfg_new, apic->target_cpus()) == 0) - irq = new; - break; + irq = alloc_irq_from(from, node); + if (irq < 0) + return 0; + cfg = alloc_irq_cfg(irq, node); + if (!cfg) { + free_irq_at(irq, NULL); + return 0; } - raw_spin_unlock_irqrestore(&vector_lock, flags); - if (irq > 0) - dynamic_irq_init_keep_chip_data(irq); + raw_spin_lock_irqsave(&vector_lock, flags); + if (!__assign_irq_vector(irq, cfg, apic->target_cpus())) + ret = irq; + raw_spin_unlock_irqrestore(&vector_lock, flags); - return irq; + if (ret) { + set_irq_chip_data(irq, cfg); + irq_clear_status_flags(irq, IRQ_NOREQUEST); + } else { + free_irq_at(irq, cfg); + } + return ret; } int create_irq(void) { - int node = cpu_to_node(boot_cpu_id); + int node = cpu_to_node(0); unsigned int irq_want; int irq; @@ -3301,14 +3104,17 @@ int create_irq(void) void destroy_irq(unsigned int irq) { + struct irq_cfg *cfg = get_irq_chip_data(irq); unsigned long flags; - dynamic_irq_cleanup_keep_chip_data(irq); + irq_set_status_flags(irq, IRQ_NOREQUEST|IRQ_NOPROBE); - free_irte(irq); + if (intr_remapping_enabled) + free_irte(irq); raw_spin_lock_irqsave(&vector_lock, flags); - __clear_irq_vector(irq, get_irq_chip_data(irq)); + __clear_irq_vector(irq, cfg); raw_spin_unlock_irqrestore(&vector_lock, flags); + free_irq_at(irq, cfg); } /* @@ -3332,7 +3138,7 @@ static int msi_compose_msg(struct pci_dev *pdev, unsigned int irq, dest = apic->cpu_mask_to_apicid_and(cfg->domain, apic->target_cpus()); - if (irq_remapped(irq)) { + if (irq_remapped(get_irq_chip_data(irq))) { struct irte irte; int ir_index; u16 sub_handle; @@ -3340,14 +3146,7 @@ static int msi_compose_msg(struct pci_dev *pdev, unsigned int irq, ir_index = map_irq_to_irte_handle(irq, &sub_handle); BUG_ON(ir_index == -1); - memset (&irte, 0, sizeof(irte)); - - irte.present = 1; - irte.dst_mode = apic->irq_dest_mode; - irte.trigger_mode = 0; /* edge */ - irte.dlvry_mode = apic->irq_delivery_mode; - irte.vector = cfg->vector; - irte.dest_id = IRTE_DEST(dest); + prepare_irte(&irte, cfg->vector, dest); /* Set source-id of interrupt request */ if (pdev) @@ -3392,26 +3191,24 @@ static int msi_compose_msg(struct pci_dev *pdev, unsigned int irq, } #ifdef CONFIG_SMP -static int set_msi_irq_affinity(unsigned int irq, const struct cpumask *mask) +static int +msi_set_affinity(struct irq_data *data, const struct cpumask *mask, bool force) { - struct irq_desc *desc = irq_to_desc(irq); - struct irq_cfg *cfg; + struct irq_cfg *cfg = data->chip_data; struct msi_msg msg; unsigned int dest; - if (set_desc_affinity(desc, mask, &dest)) + if (__ioapic_set_affinity(data, mask, &dest)) return -1; - cfg = desc->chip_data; - - get_cached_msi_msg_desc(desc, &msg); + __get_cached_msi_msg(data->msi_desc, &msg); msg.data &= ~MSI_DATA_VECTOR_MASK; msg.data |= MSI_DATA_VECTOR(cfg->vector); msg.address_lo &= ~MSI_ADDR_DEST_ID_MASK; msg.address_lo |= MSI_ADDR_DEST_ID(dest); - write_msi_msg_desc(desc, &msg); + __write_msi_msg(data->msi_desc, &msg); return 0; } @@ -3421,17 +3218,17 @@ static int set_msi_irq_affinity(unsigned int irq, const struct cpumask *mask) * done in the process context using interrupt-remapping hardware. */ static int -ir_set_msi_irq_affinity(unsigned int irq, const struct cpumask *mask) +ir_msi_set_affinity(struct irq_data *data, const struct cpumask *mask, + bool force) { - struct irq_desc *desc = irq_to_desc(irq); - struct irq_cfg *cfg = desc->chip_data; - unsigned int dest; + struct irq_cfg *cfg = data->chip_data; + unsigned int dest, irq = data->irq; struct irte irte; if (get_irte(irq, &irte)) return -1; - if (set_desc_affinity(desc, mask, &dest)) + if (__ioapic_set_affinity(data, mask, &dest)) return -1; irte.vector = cfg->vector; @@ -3461,27 +3258,27 @@ ir_set_msi_irq_affinity(unsigned int irq, const struct cpumask *mask) * which implement the MSI or MSI-X Capability Structure. */ static struct irq_chip msi_chip = { - .name = "PCI-MSI", - .unmask = unmask_msi_irq, - .mask = mask_msi_irq, - .ack = ack_apic_edge, + .name = "PCI-MSI", + .irq_unmask = unmask_msi_irq, + .irq_mask = mask_msi_irq, + .irq_ack = ack_apic_edge, #ifdef CONFIG_SMP - .set_affinity = set_msi_irq_affinity, + .irq_set_affinity = msi_set_affinity, #endif - .retrigger = ioapic_retrigger_irq, + .irq_retrigger = ioapic_retrigger_irq, }; static struct irq_chip msi_ir_chip = { - .name = "IR-PCI-MSI", - .unmask = unmask_msi_irq, - .mask = mask_msi_irq, + .name = "IR-PCI-MSI", + .irq_unmask = unmask_msi_irq, + .irq_mask = mask_msi_irq, #ifdef CONFIG_INTR_REMAP - .ack = ir_ack_apic_edge, + .irq_ack = ir_ack_apic_edge, #ifdef CONFIG_SMP - .set_affinity = ir_set_msi_irq_affinity, + .irq_set_affinity = ir_msi_set_affinity, #endif #endif - .retrigger = ioapic_retrigger_irq, + .irq_retrigger = ioapic_retrigger_irq, }; /* @@ -3513,8 +3310,8 @@ static int msi_alloc_irte(struct pci_dev *dev, int irq, int nvec) static int setup_msi_irq(struct pci_dev *dev, struct msi_desc *msidesc, int irq) { - int ret; struct msi_msg msg; + int ret; ret = msi_compose_msg(dev, irq, &msg, -1); if (ret < 0) @@ -3523,12 +3320,8 @@ static int setup_msi_irq(struct pci_dev *dev, struct msi_desc *msidesc, int irq) set_irq_msi(irq, msidesc); write_msi_msg(irq, &msg); - if (irq_remapped(irq)) { - struct irq_desc *desc = irq_to_desc(irq); - /* - * irq migration in process context - */ - desc->status |= IRQ_MOVE_PCNTXT; + if (irq_remapped(get_irq_chip_data(irq))) { + irq_set_status_flags(irq, IRQ_MOVE_PCNTXT); set_irq_chip_and_handler_name(irq, &msi_ir_chip, handle_edge_irq, "edge"); } else set_irq_chip_and_handler_name(irq, &msi_chip, handle_edge_irq, "edge"); @@ -3540,13 +3333,10 @@ static int setup_msi_irq(struct pci_dev *dev, struct msi_desc *msidesc, int irq) int arch_setup_msi_irqs(struct pci_dev *dev, int nvec, int type) { - unsigned int irq; - int ret, sub_handle; + int node, ret, sub_handle, index = 0; + unsigned int irq, irq_want; struct msi_desc *msidesc; - unsigned int irq_want; struct intel_iommu *iommu = NULL; - int index = 0; - int node; /* x86 doesn't support multiple MSI yet */ if (type == PCI_CAP_ID_MSI && nvec > 1) @@ -3606,18 +3396,17 @@ void arch_teardown_msi_irq(unsigned int irq) #if defined (CONFIG_DMAR) || defined (CONFIG_INTR_REMAP) #ifdef CONFIG_SMP -static int dmar_msi_set_affinity(unsigned int irq, const struct cpumask *mask) +static int +dmar_msi_set_affinity(struct irq_data *data, const struct cpumask *mask, + bool force) { - struct irq_desc *desc = irq_to_desc(irq); - struct irq_cfg *cfg; + struct irq_cfg *cfg = data->chip_data; + unsigned int dest, irq = data->irq; struct msi_msg msg; - unsigned int dest; - if (set_desc_affinity(desc, mask, &dest)) + if (__ioapic_set_affinity(data, mask, &dest)) return -1; - cfg = desc->chip_data; - dmar_msi_read(irq, &msg); msg.data &= ~MSI_DATA_VECTOR_MASK; @@ -3633,14 +3422,14 @@ static int dmar_msi_set_affinity(unsigned int irq, const struct cpumask *mask) #endif /* CONFIG_SMP */ static struct irq_chip dmar_msi_type = { - .name = "DMAR_MSI", - .unmask = dmar_msi_unmask, - .mask = dmar_msi_mask, - .ack = ack_apic_edge, + .name = "DMAR_MSI", + .irq_unmask = dmar_msi_unmask, + .irq_mask = dmar_msi_mask, + .irq_ack = ack_apic_edge, #ifdef CONFIG_SMP - .set_affinity = dmar_msi_set_affinity, + .irq_set_affinity = dmar_msi_set_affinity, #endif - .retrigger = ioapic_retrigger_irq, + .irq_retrigger = ioapic_retrigger_irq, }; int arch_setup_dmar_msi(unsigned int irq) @@ -3661,26 +3450,24 @@ int arch_setup_dmar_msi(unsigned int irq) #ifdef CONFIG_HPET_TIMER #ifdef CONFIG_SMP -static int hpet_msi_set_affinity(unsigned int irq, const struct cpumask *mask) +static int hpet_msi_set_affinity(struct irq_data *data, + const struct cpumask *mask, bool force) { - struct irq_desc *desc = irq_to_desc(irq); - struct irq_cfg *cfg; + struct irq_cfg *cfg = data->chip_data; struct msi_msg msg; unsigned int dest; - if (set_desc_affinity(desc, mask, &dest)) + if (__ioapic_set_affinity(data, mask, &dest)) return -1; - cfg = desc->chip_data; - - hpet_msi_read(irq, &msg); + hpet_msi_read(data->handler_data, &msg); msg.data &= ~MSI_DATA_VECTOR_MASK; msg.data |= MSI_DATA_VECTOR(cfg->vector); msg.address_lo &= ~MSI_ADDR_DEST_ID_MASK; msg.address_lo |= MSI_ADDR_DEST_ID(dest); - hpet_msi_write(irq, &msg); + hpet_msi_write(data->handler_data, &msg); return 0; } @@ -3688,34 +3475,33 @@ static int hpet_msi_set_affinity(unsigned int irq, const struct cpumask *mask) #endif /* CONFIG_SMP */ static struct irq_chip ir_hpet_msi_type = { - .name = "IR-HPET_MSI", - .unmask = hpet_msi_unmask, - .mask = hpet_msi_mask, + .name = "IR-HPET_MSI", + .irq_unmask = hpet_msi_unmask, + .irq_mask = hpet_msi_mask, #ifdef CONFIG_INTR_REMAP - .ack = ir_ack_apic_edge, + .irq_ack = ir_ack_apic_edge, #ifdef CONFIG_SMP - .set_affinity = ir_set_msi_irq_affinity, + .irq_set_affinity = ir_msi_set_affinity, #endif #endif - .retrigger = ioapic_retrigger_irq, + .irq_retrigger = ioapic_retrigger_irq, }; static struct irq_chip hpet_msi_type = { .name = "HPET_MSI", - .unmask = hpet_msi_unmask, - .mask = hpet_msi_mask, - .ack = ack_apic_edge, + .irq_unmask = hpet_msi_unmask, + .irq_mask = hpet_msi_mask, + .irq_ack = ack_apic_edge, #ifdef CONFIG_SMP - .set_affinity = hpet_msi_set_affinity, + .irq_set_affinity = hpet_msi_set_affinity, #endif - .retrigger = ioapic_retrigger_irq, + .irq_retrigger = ioapic_retrigger_irq, }; int arch_setup_hpet_msi(unsigned int irq, unsigned int id) { - int ret; struct msi_msg msg; - struct irq_desc *desc = irq_to_desc(irq); + int ret; if (intr_remapping_enabled) { struct intel_iommu *iommu = map_hpet_to_ir(id); @@ -3733,9 +3519,9 @@ int arch_setup_hpet_msi(unsigned int irq, unsigned int id) if (ret < 0) return ret; - hpet_msi_write(irq, &msg); - desc->status |= IRQ_MOVE_PCNTXT; - if (irq_remapped(irq)) + hpet_msi_write(get_irq_data(irq), &msg); + irq_set_status_flags(irq, IRQ_MOVE_PCNTXT); + if (irq_remapped(get_irq_chip_data(irq))) set_irq_chip_and_handler_name(irq, &ir_hpet_msi_type, handle_edge_irq, "edge"); else @@ -3768,33 +3554,30 @@ static void target_ht_irq(unsigned int irq, unsigned int dest, u8 vector) write_ht_irq_msg(irq, &msg); } -static int set_ht_irq_affinity(unsigned int irq, const struct cpumask *mask) +static int +ht_set_affinity(struct irq_data *data, const struct cpumask *mask, bool force) { - struct irq_desc *desc = irq_to_desc(irq); - struct irq_cfg *cfg; + struct irq_cfg *cfg = data->chip_data; unsigned int dest; - if (set_desc_affinity(desc, mask, &dest)) + if (__ioapic_set_affinity(data, mask, &dest)) return -1; - cfg = desc->chip_data; - - target_ht_irq(irq, dest, cfg->vector); - + target_ht_irq(data->irq, dest, cfg->vector); return 0; } #endif static struct irq_chip ht_irq_chip = { - .name = "PCI-HT", - .mask = mask_ht_irq, - .unmask = unmask_ht_irq, - .ack = ack_apic_edge, + .name = "PCI-HT", + .irq_mask = mask_ht_irq, + .irq_unmask = unmask_ht_irq, + .irq_ack = ack_apic_edge, #ifdef CONFIG_SMP - .set_affinity = set_ht_irq_affinity, + .irq_set_affinity = ht_set_affinity, #endif - .retrigger = ioapic_retrigger_irq, + .irq_retrigger = ioapic_retrigger_irq, }; int arch_setup_ht_irq(unsigned int irq, struct pci_dev *dev) @@ -3885,14 +3668,13 @@ int __init arch_probe_nr_irqs(void) if (nr < nr_irqs) nr_irqs = nr; - return 0; + return NR_IRQS_LEGACY; } #endif static int __io_apic_set_pci_routing(struct device *dev, int irq, struct io_apic_irq_attr *irq_attr) { - struct irq_desc *desc; struct irq_cfg *cfg; int node; int ioapic, pin; @@ -3908,13 +3690,11 @@ static int __io_apic_set_pci_routing(struct device *dev, int irq, if (dev) node = dev_to_node(dev); else - node = cpu_to_node(boot_cpu_id); + node = cpu_to_node(0); - desc = irq_to_desc_alloc_node(irq, node); - if (!desc) { - printk(KERN_INFO "can not get irq_desc %d\n", irq); + cfg = alloc_irq_and_cfg_at(irq, node); + if (!cfg) return 0; - } pin = irq_attr->ioapic_pin; trigger = irq_attr->trigger; @@ -3924,15 +3704,14 @@ static int __io_apic_set_pci_routing(struct device *dev, int irq, * IRQs < 16 are already in the irq_2_pin[] map */ if (irq >= legacy_pic->nr_legacy_irqs) { - cfg = desc->chip_data; - if (add_pin_to_irq_node_nopanic(cfg, node, ioapic, pin)) { + if (__add_pin_to_irq_node(cfg, node, ioapic, pin)) { printk(KERN_INFO "can not add pin %d for irq %d\n", pin, irq); return 0; } } - setup_IO_APIC_irq(ioapic, pin, irq, desc, trigger, polarity); + setup_ioapic_irq(ioapic, pin, irq, cfg, trigger, polarity); return 0; } @@ -4125,14 +3904,14 @@ void __init setup_ioapic_dest(void) */ if (desc->status & (IRQ_NO_BALANCING | IRQ_AFFINITY_SET)) - mask = desc->affinity; + mask = desc->irq_data.affinity; else mask = apic->target_cpus(); if (intr_remapping_enabled) - set_ir_ioapic_affinity_irq_desc(desc, mask); + ir_ioapic_set_affinity(&desc->irq_data, mask, false); else - set_ioapic_affinity_irq_desc(desc, mask); + ioapic_set_affinity(&desc->irq_data, mask, false); } } @@ -4316,19 +4095,18 @@ void __init mp_register_ioapic(int id, u32 address, u32 gsi_base) void __init pre_init_apic_IRQ0(void) { struct irq_cfg *cfg; - struct irq_desc *desc; printk(KERN_INFO "Early APIC setup for system timer0\n"); #ifndef CONFIG_SMP phys_cpu_present_map = physid_mask_of_physid(boot_cpu_physical_apicid); #endif - desc = irq_to_desc_alloc_node(0, 0); + /* Make sure the irq descriptor is set up */ + cfg = alloc_irq_and_cfg_at(0, 0); setup_local_APIC(); - cfg = irq_cfg(0); add_pin_to_irq_node(cfg, 0, 0, 0); set_irq_chip_and_handler_name(0, &ioapic_chip, handle_edge_irq, "edge"); - setup_IO_APIC_irq(0, 0, 0, desc, 0, 0); + setup_ioapic_irq(0, 0, 0, cfg, 0, 0); } diff --git a/arch/x86/kernel/apic/nmi.c b/arch/x86/kernel/apic/nmi.c index a43f71cb30f8..c90041ccb742 100644 --- a/arch/x86/kernel/apic/nmi.c +++ b/arch/x86/kernel/apic/nmi.c @@ -178,7 +178,7 @@ int __init check_nmi_watchdog(void) error: if (nmi_watchdog == NMI_IO_APIC) { if (!timer_through_8259) - legacy_pic->chip->mask(0); + legacy_pic->mask(0); on_each_cpu(__acpi_nmi_disable, NULL, 1); } diff --git a/arch/x86/kernel/apic/probe_64.c b/arch/x86/kernel/apic/probe_64.c index 83e9be4778e2..f9e4e6a54073 100644 --- a/arch/x86/kernel/apic/probe_64.c +++ b/arch/x86/kernel/apic/probe_64.c @@ -54,6 +54,9 @@ static int apicid_phys_pkg_id(int initial_apic_id, int index_msb) */ void __init default_setup_apic_routing(void) { + + enable_IR_x2apic(); + #ifdef CONFIG_X86_X2APIC if (x2apic_mode #ifdef CONFIG_X86_UV diff --git a/arch/x86/kernel/cpu/amd.c b/arch/x86/kernel/cpu/amd.c index ba5f62f45f01..9e093f8fe78c 100644 --- a/arch/x86/kernel/cpu/amd.c +++ b/arch/x86/kernel/cpu/amd.c @@ -148,7 +148,7 @@ static void __cpuinit amd_k7_smp_check(struct cpuinfo_x86 *c) { #ifdef CONFIG_SMP /* calling is from identify_secondary_cpu() ? */ - if (c->cpu_index == boot_cpu_id) + if (!c->cpu_index) return; /* @@ -253,37 +253,51 @@ static int __cpuinit nearby_node(int apicid) #endif /* - * Fixup core topology information for AMD multi-node processors. - * Assumption: Number of cores in each internal node is the same. + * Fixup core topology information for + * (1) AMD multi-node processors + * Assumption: Number of cores in each internal node is the same. + * (2) AMD processors supporting compute units */ #ifdef CONFIG_X86_HT -static void __cpuinit amd_fixup_dcm(struct cpuinfo_x86 *c) +static void __cpuinit amd_get_topology(struct cpuinfo_x86 *c) { - unsigned long long value; - u32 nodes, cores_per_node; + u32 nodes; + u8 node_id; int cpu = smp_processor_id(); - if (!cpu_has(c, X86_FEATURE_NODEID_MSR)) - return; + /* get information required for multi-node processors */ + if (cpu_has(c, X86_FEATURE_TOPOEXT)) { + u32 eax, ebx, ecx, edx; - /* fixup topology information only once for a core */ - if (cpu_has(c, X86_FEATURE_AMD_DCM)) - return; + cpuid(0x8000001e, &eax, &ebx, &ecx, &edx); + nodes = ((ecx >> 8) & 7) + 1; + node_id = ecx & 7; - rdmsrl(MSR_FAM10H_NODE_ID, value); + /* get compute unit information */ + smp_num_siblings = ((ebx >> 8) & 3) + 1; + c->compute_unit_id = ebx & 0xff; + } else if (cpu_has(c, X86_FEATURE_NODEID_MSR)) { + u64 value; - nodes = ((value >> 3) & 7) + 1; - if (nodes == 1) + rdmsrl(MSR_FAM10H_NODE_ID, value); + nodes = ((value >> 3) & 7) + 1; + node_id = value & 7; + } else return; - set_cpu_cap(c, X86_FEATURE_AMD_DCM); - cores_per_node = c->x86_max_cores / nodes; + /* fixup multi-node processor information */ + if (nodes > 1) { + u32 cores_per_node; + + set_cpu_cap(c, X86_FEATURE_AMD_DCM); + cores_per_node = c->x86_max_cores / nodes; - /* store NodeID, use llc_shared_map to store sibling info */ - per_cpu(cpu_llc_id, cpu) = value & 7; + /* store NodeID, use llc_shared_map to store sibling info */ + per_cpu(cpu_llc_id, cpu) = node_id; - /* fixup core id to be in range from 0 to (cores_per_node - 1) */ - c->cpu_core_id = c->cpu_core_id % cores_per_node; + /* core id to be in range from 0 to (cores_per_node - 1) */ + c->cpu_core_id = c->cpu_core_id % cores_per_node; + } } #endif @@ -304,9 +318,7 @@ static void __cpuinit amd_detect_cmp(struct cpuinfo_x86 *c) c->phys_proc_id = c->initial_apicid >> bits; /* use socket ID also for last level cache */ per_cpu(cpu_llc_id, cpu) = c->phys_proc_id; - /* fixup topology information on multi-node processors */ - if ((c->x86 == 0x10) && (c->x86_model == 9)) - amd_fixup_dcm(c); + amd_get_topology(c); #endif } @@ -412,6 +424,23 @@ static void __cpuinit early_init_amd(struct cpuinfo_x86 *c) set_cpu_cap(c, X86_FEATURE_EXTD_APICID); } #endif + + /* We need to do the following only once */ + if (c != &boot_cpu_data) + return; + + if (cpu_has(c, X86_FEATURE_CONSTANT_TSC)) { + + if (c->x86 > 0x10 || + (c->x86 == 0x10 && c->x86_model >= 0x2)) { + u64 val; + + rdmsrl(MSR_K7_HWCR, val); + if (!(val & BIT(24))) + printk(KERN_WARNING FW_BUG "TSC doesn't count " + "with P0 frequency!\n"); + } + } } static void __cpuinit init_amd(struct cpuinfo_x86 *c) @@ -523,7 +552,7 @@ static void __cpuinit init_amd(struct cpuinfo_x86 *c) #endif if (c->extended_cpuid_level >= 0x80000006) { - if ((c->x86 >= 0x0f) && (cpuid_edx(0x80000006) & 0xf000)) + if (cpuid_edx(0x80000006) & 0xf000) num_cache_leaves = 4; else num_cache_leaves = 3; diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c index f2f9ac7da25c..4b68bda30938 100644 --- a/arch/x86/kernel/cpu/common.c +++ b/arch/x86/kernel/cpu/common.c @@ -665,7 +665,7 @@ static void __init early_identify_cpu(struct cpuinfo_x86 *c) this_cpu->c_early_init(c); #ifdef CONFIG_SMP - c->cpu_index = boot_cpu_id; + c->cpu_index = 0; #endif filter_cpuid_features(c, false); } @@ -704,16 +704,21 @@ void __init early_cpu_init(void) } /* - * The NOPL instruction is supposed to exist on all CPUs with - * family >= 6; unfortunately, that's not true in practice because - * of early VIA chips and (more importantly) broken virtualizers that - * are not easy to detect. In the latter case it doesn't even *fail* - * reliably, so probing for it doesn't even work. Disable it completely + * The NOPL instruction is supposed to exist on all CPUs of family >= 6; + * unfortunately, that's not true in practice because of early VIA + * chips and (more importantly) broken virtualizers that are not easy + * to detect. In the latter case it doesn't even *fail* reliably, so + * probing for it doesn't even work. Disable it completely on 32-bit * unless we can find a reliable way to detect all the broken cases. + * Enable it explicitly on 64-bit for non-constant inputs of cpu_has(). */ static void __cpuinit detect_nopl(struct cpuinfo_x86 *c) { +#ifdef CONFIG_X86_32 clear_cpu_cap(c, X86_FEATURE_NOPL); +#else + set_cpu_cap(c, X86_FEATURE_NOPL); +#endif } static void __cpuinit generic_identify(struct cpuinfo_x86 *c) @@ -1264,13 +1269,6 @@ void __cpuinit cpu_init(void) clear_all_debug_regs(); dbg_restore_debug_regs(); - /* - * Force FPU initialization: - */ - current_thread_info()->status = 0; - clear_used_math(); - mxcsr_feature_mask_init(); - fpu_init(); xsave_init(); } diff --git a/arch/x86/kernel/cpu/cpu.h b/arch/x86/kernel/cpu/cpu.h index f668bb1f7d43..e765633f210e 100644 --- a/arch/x86/kernel/cpu/cpu.h +++ b/arch/x86/kernel/cpu/cpu.h @@ -32,6 +32,7 @@ struct cpu_dev { extern const struct cpu_dev *const __x86_cpu_dev_start[], *const __x86_cpu_dev_end[]; +extern void get_cpu_cap(struct cpuinfo_x86 *c); extern void cpu_detect_cache_sizes(struct cpuinfo_x86 *c); extern void get_cpu_cap(struct cpuinfo_x86 *c); diff --git a/arch/x86/kernel/cpu/intel.c b/arch/x86/kernel/cpu/intel.c index b4389441efbb..695f17731e23 100644 --- a/arch/x86/kernel/cpu/intel.c +++ b/arch/x86/kernel/cpu/intel.c @@ -170,7 +170,7 @@ static void __cpuinit intel_smp_check(struct cpuinfo_x86 *c) { #ifdef CONFIG_SMP /* calling is from identify_secondary_cpu() ? */ - if (c->cpu_index == boot_cpu_id) + if (!c->cpu_index) return; /* diff --git a/arch/x86/kernel/cpu/intel_cacheinfo.c b/arch/x86/kernel/cpu/intel_cacheinfo.c index 898c2f4eab88..12cd823c8d03 100644 --- a/arch/x86/kernel/cpu/intel_cacheinfo.c +++ b/arch/x86/kernel/cpu/intel_cacheinfo.c @@ -17,7 +17,7 @@ #include <asm/processor.h> #include <linux/smp.h> -#include <asm/k8.h> +#include <asm/amd_nb.h> #include <asm/smp.h> #define LVL_1_INST 1 @@ -306,7 +306,7 @@ struct _cache_attr { ssize_t (*store)(struct _cpuid4_info *, const char *, size_t count); }; -#ifdef CONFIG_CPU_SUP_AMD +#ifdef CONFIG_AMD_NB /* * L3 cache descriptors @@ -369,7 +369,7 @@ static void __cpuinit amd_check_l3_disable(struct _cpuid4_info_regs *this_leaf, return; /* not in virtualized environments */ - if (num_k8_northbridges == 0) + if (k8_northbridges.num == 0) return; /* @@ -377,7 +377,7 @@ static void __cpuinit amd_check_l3_disable(struct _cpuid4_info_regs *this_leaf, * never freed but this is done only on shutdown so it doesn't matter. */ if (!l3_caches) { - int size = num_k8_northbridges * sizeof(struct amd_l3_cache *); + int size = k8_northbridges.num * sizeof(struct amd_l3_cache *); l3_caches = kzalloc(size, GFP_ATOMIC); if (!l3_caches) @@ -556,12 +556,12 @@ static struct _cache_attr cache_disable_0 = __ATTR(cache_disable_0, 0644, static struct _cache_attr cache_disable_1 = __ATTR(cache_disable_1, 0644, show_cache_disable_1, store_cache_disable_1); -#else /* CONFIG_CPU_SUP_AMD */ +#else /* CONFIG_AMD_NB */ static void __cpuinit amd_check_l3_disable(struct _cpuid4_info_regs *this_leaf, int index) { }; -#endif /* CONFIG_CPU_SUP_AMD */ +#endif /* CONFIG_AMD_NB */ static int __cpuinit cpuid4_cache_lookup_regs(int index, @@ -1000,7 +1000,7 @@ static struct attribute *default_attrs[] = { static struct attribute *default_l3_attrs[] = { DEFAULT_SYSFS_CACHE_ATTRS, -#ifdef CONFIG_CPU_SUP_AMD +#ifdef CONFIG_AMD_NB &cache_disable_0.attr, &cache_disable_1.attr, #endif diff --git a/arch/x86/kernel/cpu/mcheck/mce_amd.c b/arch/x86/kernel/cpu/mcheck/mce_amd.c index 39aaee5c1ab2..80c482382d5c 100644 --- a/arch/x86/kernel/cpu/mcheck/mce_amd.c +++ b/arch/x86/kernel/cpu/mcheck/mce_amd.c @@ -131,7 +131,8 @@ void mce_amd_feature_init(struct cpuinfo_x86 *c) u32 low = 0, high = 0, address = 0; unsigned int bank, block; struct thresh_restart tr; - u8 lvt_off; + int lvt_off = -1; + u8 offset; for (bank = 0; bank < NR_BANKS; ++bank) { for (block = 0; block < NR_BLOCKS; ++block) { @@ -162,8 +163,28 @@ void mce_amd_feature_init(struct cpuinfo_x86 *c) if (shared_bank[bank] && c->cpu_core_id) break; #endif - lvt_off = setup_APIC_eilvt_mce(THRESHOLD_APIC_VECTOR, - APIC_EILVT_MSG_FIX, 0); + offset = (high & MASK_LVTOFF_HI) >> 20; + if (lvt_off < 0) { + if (setup_APIC_eilvt(offset, + THRESHOLD_APIC_VECTOR, + APIC_EILVT_MSG_FIX, 0)) { + pr_err(FW_BUG "cpu %d, failed to " + "setup threshold interrupt " + "for bank %d, block %d " + "(MSR%08X=0x%x%08x)", + smp_processor_id(), bank, block, + address, high, low); + continue; + } + lvt_off = offset; + } else if (lvt_off != offset) { + pr_err(FW_BUG "cpu %d, invalid threshold " + "interrupt offset %d for bank %d," + "block %d (MSR%08X=0x%x%08x)", + smp_processor_id(), lvt_off, bank, + block, address, high, low); + continue; + } high &= ~MASK_LVTOFF_HI; high |= lvt_off << 20; diff --git a/arch/x86/kernel/cpu/mcheck/therm_throt.c b/arch/x86/kernel/cpu/mcheck/therm_throt.c index 169d8804a9f8..4b683267eca5 100644 --- a/arch/x86/kernel/cpu/mcheck/therm_throt.c +++ b/arch/x86/kernel/cpu/mcheck/therm_throt.c @@ -350,7 +350,7 @@ static void intel_thermal_interrupt(void) static void unexpected_thermal_interrupt(void) { - printk(KERN_ERR "CPU%d: Unexpected LVT TMR interrupt!\n", + printk(KERN_ERR "CPU%d: Unexpected LVT thermal interrupt!\n", smp_processor_id()); add_taint(TAINT_MACHINE_CHECK); } diff --git a/arch/x86/kernel/cpu/mtrr/cleanup.c b/arch/x86/kernel/cpu/mtrr/cleanup.c index c5f59d071425..ac140c7be396 100644 --- a/arch/x86/kernel/cpu/mtrr/cleanup.c +++ b/arch/x86/kernel/cpu/mtrr/cleanup.c @@ -827,7 +827,7 @@ int __init amd_special_default_mtrr(void) if (boot_cpu_data.x86_vendor != X86_VENDOR_AMD) return 0; - if (boot_cpu_data.x86 < 0xf || boot_cpu_data.x86 > 0x11) + if (boot_cpu_data.x86 < 0xf) return 0; /* In case some hypervisor doesn't pass SYSCFG through: */ if (rdmsr_safe(MSR_K8_SYSCFG, &l, &h) < 0) diff --git a/arch/x86/kernel/cpu/mtrr/generic.c b/arch/x86/kernel/cpu/mtrr/generic.c index 7d28d7d03885..9f27228ceffd 100644 --- a/arch/x86/kernel/cpu/mtrr/generic.c +++ b/arch/x86/kernel/cpu/mtrr/generic.c @@ -64,18 +64,59 @@ static inline void k8_check_syscfg_dram_mod_en(void) } } +/* Get the size of contiguous MTRR range */ +static u64 get_mtrr_size(u64 mask) +{ + u64 size; + + mask >>= PAGE_SHIFT; + mask |= size_or_mask; + size = -mask; + size <<= PAGE_SHIFT; + return size; +} + /* - * Returns the effective MTRR type for the region - * Error returns: - * - 0xFE - when the range is "not entirely covered" by _any_ var range MTRR - * - 0xFF - when MTRR is not enabled + * Check and return the effective type for MTRR-MTRR type overlap. + * Returns 1 if the effective type is UNCACHEABLE, else returns 0 */ -u8 mtrr_type_lookup(u64 start, u64 end) +static int check_type_overlap(u8 *prev, u8 *curr) +{ + if (*prev == MTRR_TYPE_UNCACHABLE || *curr == MTRR_TYPE_UNCACHABLE) { + *prev = MTRR_TYPE_UNCACHABLE; + *curr = MTRR_TYPE_UNCACHABLE; + return 1; + } + + if ((*prev == MTRR_TYPE_WRBACK && *curr == MTRR_TYPE_WRTHROUGH) || + (*prev == MTRR_TYPE_WRTHROUGH && *curr == MTRR_TYPE_WRBACK)) { + *prev = MTRR_TYPE_WRTHROUGH; + *curr = MTRR_TYPE_WRTHROUGH; + } + + if (*prev != *curr) { + *prev = MTRR_TYPE_UNCACHABLE; + *curr = MTRR_TYPE_UNCACHABLE; + return 1; + } + + return 0; +} + +/* + * Error/Semi-error returns: + * 0xFF - when MTRR is not enabled + * *repeat == 1 implies [start:end] spanned across MTRR range and type returned + * corresponds only to [start:*partial_end]. + * Caller has to lookup again for [*partial_end:end]. + */ +static u8 __mtrr_type_lookup(u64 start, u64 end, u64 *partial_end, int *repeat) { int i; u64 base, mask; u8 prev_match, curr_match; + *repeat = 0; if (!mtrr_state_set) return 0xFF; @@ -126,8 +167,34 @@ u8 mtrr_type_lookup(u64 start, u64 end) start_state = ((start & mask) == (base & mask)); end_state = ((end & mask) == (base & mask)); - if (start_state != end_state) - return 0xFE; + + if (start_state != end_state) { + /* + * We have start:end spanning across an MTRR. + * We split the region into + * either + * (start:mtrr_end) (mtrr_end:end) + * or + * (start:mtrr_start) (mtrr_start:end) + * depending on kind of overlap. + * Return the type for first region and a pointer to + * the start of second region so that caller will + * lookup again on the second region. + * Note: This way we handle multiple overlaps as well. + */ + if (start_state) + *partial_end = base + get_mtrr_size(mask); + else + *partial_end = base; + + if (unlikely(*partial_end <= start)) { + WARN_ON(1); + *partial_end = start + PAGE_SIZE; + } + + end = *partial_end - 1; /* end is inclusive */ + *repeat = 1; + } if ((start & mask) != (base & mask)) continue; @@ -138,21 +205,8 @@ u8 mtrr_type_lookup(u64 start, u64 end) continue; } - if (prev_match == MTRR_TYPE_UNCACHABLE || - curr_match == MTRR_TYPE_UNCACHABLE) { - return MTRR_TYPE_UNCACHABLE; - } - - if ((prev_match == MTRR_TYPE_WRBACK && - curr_match == MTRR_TYPE_WRTHROUGH) || - (prev_match == MTRR_TYPE_WRTHROUGH && - curr_match == MTRR_TYPE_WRBACK)) { - prev_match = MTRR_TYPE_WRTHROUGH; - curr_match = MTRR_TYPE_WRTHROUGH; - } - - if (prev_match != curr_match) - return MTRR_TYPE_UNCACHABLE; + if (check_type_overlap(&prev_match, &curr_match)) + return curr_match; } if (mtrr_tom2) { @@ -166,6 +220,36 @@ u8 mtrr_type_lookup(u64 start, u64 end) return mtrr_state.def_type; } +/* + * Returns the effective MTRR type for the region + * Error return: + * 0xFF - when MTRR is not enabled + */ +u8 mtrr_type_lookup(u64 start, u64 end) +{ + u8 type, prev_type; + int repeat; + u64 partial_end; + + type = __mtrr_type_lookup(start, end, &partial_end, &repeat); + + /* + * Common path is with repeat = 0. + * However, we can have cases where [start:end] spans across some + * MTRR range. Do repeated lookups for that case here. + */ + while (repeat) { + prev_type = type; + start = partial_end; + type = __mtrr_type_lookup(start, end, &partial_end, &repeat); + + if (check_type_overlap(&prev_type, &type)) + return type; + } + + return type; +} + /* Get the MSR pair relating to a var range */ static void get_mtrr_var_range(unsigned int index, struct mtrr_var_range *vr) diff --git a/arch/x86/kernel/cpu/perf_event.c b/arch/x86/kernel/cpu/perf_event.c index 03a5b0385ad6..fe73c1844a9a 100644 --- a/arch/x86/kernel/cpu/perf_event.c +++ b/arch/x86/kernel/cpu/perf_event.c @@ -531,7 +531,7 @@ static int x86_pmu_hw_config(struct perf_event *event) /* * Setup the hardware configuration for a given attr_type */ -static int __hw_perf_event_init(struct perf_event *event) +static int __x86_pmu_event_init(struct perf_event *event) { int err; @@ -584,7 +584,7 @@ static void x86_pmu_disable_all(void) } } -void hw_perf_disable(void) +static void x86_pmu_disable(struct pmu *pmu) { struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events); @@ -619,7 +619,7 @@ static void x86_pmu_enable_all(int added) } } -static const struct pmu pmu; +static struct pmu pmu; static inline int is_x86_event(struct perf_event *event) { @@ -801,10 +801,10 @@ static inline int match_prev_assignment(struct hw_perf_event *hwc, hwc->last_tag == cpuc->tags[i]; } -static int x86_pmu_start(struct perf_event *event); -static void x86_pmu_stop(struct perf_event *event); +static void x86_pmu_start(struct perf_event *event, int flags); +static void x86_pmu_stop(struct perf_event *event, int flags); -void hw_perf_enable(void) +static void x86_pmu_enable(struct pmu *pmu) { struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events); struct perf_event *event; @@ -840,7 +840,14 @@ void hw_perf_enable(void) match_prev_assignment(hwc, cpuc, i)) continue; - x86_pmu_stop(event); + /* + * Ensure we don't accidentally enable a stopped + * counter simply because we rescheduled. + */ + if (hwc->state & PERF_HES_STOPPED) + hwc->state |= PERF_HES_ARCH; + + x86_pmu_stop(event, PERF_EF_UPDATE); } for (i = 0; i < cpuc->n_events; i++) { @@ -852,7 +859,10 @@ void hw_perf_enable(void) else if (i < n_running) continue; - x86_pmu_start(event); + if (hwc->state & PERF_HES_ARCH) + continue; + + x86_pmu_start(event, PERF_EF_RELOAD); } cpuc->n_added = 0; perf_events_lapic_init(); @@ -953,15 +963,12 @@ static void x86_pmu_enable_event(struct perf_event *event) } /* - * activate a single event + * Add a single event to the PMU. * * The event is added to the group of enabled events * but only if it can be scehduled with existing events. - * - * Called with PMU disabled. If successful and return value 1, - * then guaranteed to call perf_enable() and hw_perf_enable() */ -static int x86_pmu_enable(struct perf_event *event) +static int x86_pmu_add(struct perf_event *event, int flags) { struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events); struct hw_perf_event *hwc; @@ -970,58 +977,67 @@ static int x86_pmu_enable(struct perf_event *event) hwc = &event->hw; + perf_pmu_disable(event->pmu); n0 = cpuc->n_events; - n = collect_events(cpuc, event, false); - if (n < 0) - return n; + ret = n = collect_events(cpuc, event, false); + if (ret < 0) + goto out; + + hwc->state = PERF_HES_UPTODATE | PERF_HES_STOPPED; + if (!(flags & PERF_EF_START)) + hwc->state |= PERF_HES_ARCH; /* * If group events scheduling transaction was started, * skip the schedulability test here, it will be peformed - * at commit time(->commit_txn) as a whole + * at commit time (->commit_txn) as a whole */ if (cpuc->group_flag & PERF_EVENT_TXN) - goto out; + goto done_collect; ret = x86_pmu.schedule_events(cpuc, n, assign); if (ret) - return ret; + goto out; /* * copy new assignment, now we know it is possible * will be used by hw_perf_enable() */ memcpy(cpuc->assign, assign, n*sizeof(int)); -out: +done_collect: cpuc->n_events = n; cpuc->n_added += n - n0; cpuc->n_txn += n - n0; - return 0; + ret = 0; +out: + perf_pmu_enable(event->pmu); + return ret; } -static int x86_pmu_start(struct perf_event *event) +static void x86_pmu_start(struct perf_event *event, int flags) { struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events); int idx = event->hw.idx; - if (idx == -1) - return -EAGAIN; + if (WARN_ON_ONCE(!(event->hw.state & PERF_HES_STOPPED))) + return; + + if (WARN_ON_ONCE(idx == -1)) + return; + + if (flags & PERF_EF_RELOAD) { + WARN_ON_ONCE(!(event->hw.state & PERF_HES_UPTODATE)); + x86_perf_event_set_period(event); + } + + event->hw.state = 0; - x86_perf_event_set_period(event); cpuc->events[idx] = event; __set_bit(idx, cpuc->active_mask); __set_bit(idx, cpuc->running); x86_pmu.enable(event); perf_event_update_userpage(event); - - return 0; -} - -static void x86_pmu_unthrottle(struct perf_event *event) -{ - int ret = x86_pmu_start(event); - WARN_ON_ONCE(ret); } void perf_event_print_debug(void) @@ -1078,27 +1094,29 @@ void perf_event_print_debug(void) local_irq_restore(flags); } -static void x86_pmu_stop(struct perf_event *event) +static void x86_pmu_stop(struct perf_event *event, int flags) { struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events); struct hw_perf_event *hwc = &event->hw; - int idx = hwc->idx; - if (!__test_and_clear_bit(idx, cpuc->active_mask)) - return; - - x86_pmu.disable(event); - - /* - * Drain the remaining delta count out of a event - * that we are disabling: - */ - x86_perf_event_update(event); + if (__test_and_clear_bit(hwc->idx, cpuc->active_mask)) { + x86_pmu.disable(event); + cpuc->events[hwc->idx] = NULL; + WARN_ON_ONCE(hwc->state & PERF_HES_STOPPED); + hwc->state |= PERF_HES_STOPPED; + } - cpuc->events[idx] = NULL; + if ((flags & PERF_EF_UPDATE) && !(hwc->state & PERF_HES_UPTODATE)) { + /* + * Drain the remaining delta count out of a event + * that we are disabling: + */ + x86_perf_event_update(event); + hwc->state |= PERF_HES_UPTODATE; + } } -static void x86_pmu_disable(struct perf_event *event) +static void x86_pmu_del(struct perf_event *event, int flags) { struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events); int i; @@ -1111,7 +1129,7 @@ static void x86_pmu_disable(struct perf_event *event) if (cpuc->group_flag & PERF_EVENT_TXN) return; - x86_pmu_stop(event); + x86_pmu_stop(event, PERF_EF_UPDATE); for (i = 0; i < cpuc->n_events; i++) { if (event == cpuc->event_list[i]) { @@ -1134,7 +1152,6 @@ static int x86_pmu_handle_irq(struct pt_regs *regs) struct perf_sample_data data; struct cpu_hw_events *cpuc; struct perf_event *event; - struct hw_perf_event *hwc; int idx, handled = 0; u64 val; @@ -1155,7 +1172,6 @@ static int x86_pmu_handle_irq(struct pt_regs *regs) } event = cpuc->events[idx]; - hwc = &event->hw; val = x86_perf_event_update(event); if (val & (1ULL << (x86_pmu.cntval_bits - 1))) @@ -1171,7 +1187,7 @@ static int x86_pmu_handle_irq(struct pt_regs *regs) continue; if (perf_event_overflow(event, 1, &data, regs)) - x86_pmu_stop(event); + x86_pmu_stop(event, 0); } if (handled) @@ -1180,25 +1196,6 @@ static int x86_pmu_handle_irq(struct pt_regs *regs) return handled; } -void smp_perf_pending_interrupt(struct pt_regs *regs) -{ - irq_enter(); - ack_APIC_irq(); - inc_irq_stat(apic_pending_irqs); - perf_event_do_pending(); - irq_exit(); -} - -void set_perf_event_pending(void) -{ -#ifdef CONFIG_X86_LOCAL_APIC - if (!x86_pmu.apic || !x86_pmu_initialized()) - return; - - apic->send_IPI_self(LOCAL_PENDING_VECTOR); -#endif -} - void perf_events_lapic_init(void) { if (!x86_pmu.apic || !x86_pmu_initialized()) @@ -1388,7 +1385,6 @@ void __init init_hw_perf_events(void) x86_pmu.num_counters = X86_PMC_MAX_GENERIC; } x86_pmu.intel_ctrl = (1 << x86_pmu.num_counters) - 1; - perf_max_events = x86_pmu.num_counters; if (x86_pmu.num_counters_fixed > X86_PMC_MAX_FIXED) { WARN(1, KERN_ERR "hw perf events fixed %d > max(%d), clipping!", @@ -1424,6 +1420,7 @@ void __init init_hw_perf_events(void) pr_info("... fixed-purpose events: %d\n", x86_pmu.num_counters_fixed); pr_info("... event mask: %016Lx\n", x86_pmu.intel_ctrl); + perf_pmu_register(&pmu); perf_cpu_notifier(x86_pmu_notifier); } @@ -1437,10 +1434,11 @@ static inline void x86_pmu_read(struct perf_event *event) * Set the flag to make pmu::enable() not perform the * schedulability test, it will be performed at commit time */ -static void x86_pmu_start_txn(const struct pmu *pmu) +static void x86_pmu_start_txn(struct pmu *pmu) { struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events); + perf_pmu_disable(pmu); cpuc->group_flag |= PERF_EVENT_TXN; cpuc->n_txn = 0; } @@ -1450,7 +1448,7 @@ static void x86_pmu_start_txn(const struct pmu *pmu) * Clear the flag and pmu::enable() will perform the * schedulability test. */ -static void x86_pmu_cancel_txn(const struct pmu *pmu) +static void x86_pmu_cancel_txn(struct pmu *pmu) { struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events); @@ -1460,6 +1458,7 @@ static void x86_pmu_cancel_txn(const struct pmu *pmu) */ cpuc->n_added -= cpuc->n_txn; cpuc->n_events -= cpuc->n_txn; + perf_pmu_enable(pmu); } /* @@ -1467,7 +1466,7 @@ static void x86_pmu_cancel_txn(const struct pmu *pmu) * Perform the group schedulability test as a whole * Return 0 if success */ -static int x86_pmu_commit_txn(const struct pmu *pmu) +static int x86_pmu_commit_txn(struct pmu *pmu) { struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events); int assign[X86_PMC_IDX_MAX]; @@ -1489,22 +1488,10 @@ static int x86_pmu_commit_txn(const struct pmu *pmu) memcpy(cpuc->assign, assign, n*sizeof(int)); cpuc->group_flag &= ~PERF_EVENT_TXN; - + perf_pmu_enable(pmu); return 0; } -static const struct pmu pmu = { - .enable = x86_pmu_enable, - .disable = x86_pmu_disable, - .start = x86_pmu_start, - .stop = x86_pmu_stop, - .read = x86_pmu_read, - .unthrottle = x86_pmu_unthrottle, - .start_txn = x86_pmu_start_txn, - .cancel_txn = x86_pmu_cancel_txn, - .commit_txn = x86_pmu_commit_txn, -}; - /* * validate that we can schedule this event */ @@ -1579,12 +1566,22 @@ out: return ret; } -const struct pmu *hw_perf_event_init(struct perf_event *event) +int x86_pmu_event_init(struct perf_event *event) { - const struct pmu *tmp; + struct pmu *tmp; int err; - err = __hw_perf_event_init(event); + switch (event->attr.type) { + case PERF_TYPE_RAW: + case PERF_TYPE_HARDWARE: + case PERF_TYPE_HW_CACHE: + break; + + default: + return -ENOENT; + } + + err = __x86_pmu_event_init(event); if (!err) { /* * we temporarily connect event to its pmu @@ -1604,26 +1601,31 @@ const struct pmu *hw_perf_event_init(struct perf_event *event) if (err) { if (event->destroy) event->destroy(event); - return ERR_PTR(err); } - return &pmu; + return err; } -/* - * callchain support - */ +static struct pmu pmu = { + .pmu_enable = x86_pmu_enable, + .pmu_disable = x86_pmu_disable, -static inline -void callchain_store(struct perf_callchain_entry *entry, u64 ip) -{ - if (entry->nr < PERF_MAX_STACK_DEPTH) - entry->ip[entry->nr++] = ip; -} + .event_init = x86_pmu_event_init, -static DEFINE_PER_CPU(struct perf_callchain_entry, pmc_irq_entry); -static DEFINE_PER_CPU(struct perf_callchain_entry, pmc_nmi_entry); + .add = x86_pmu_add, + .del = x86_pmu_del, + .start = x86_pmu_start, + .stop = x86_pmu_stop, + .read = x86_pmu_read, + .start_txn = x86_pmu_start_txn, + .cancel_txn = x86_pmu_cancel_txn, + .commit_txn = x86_pmu_commit_txn, +}; + +/* + * callchain support + */ static void backtrace_warning_symbol(void *data, char *msg, unsigned long symbol) @@ -1645,7 +1647,7 @@ static void backtrace_address(void *data, unsigned long addr, int reliable) { struct perf_callchain_entry *entry = data; - callchain_store(entry, addr); + perf_callchain_store(entry, addr); } static const struct stacktrace_ops backtrace_ops = { @@ -1656,11 +1658,15 @@ static const struct stacktrace_ops backtrace_ops = { .walk_stack = print_context_stack_bp, }; -static void -perf_callchain_kernel(struct pt_regs *regs, struct perf_callchain_entry *entry) +void +perf_callchain_kernel(struct perf_callchain_entry *entry, struct pt_regs *regs) { - callchain_store(entry, PERF_CONTEXT_KERNEL); - callchain_store(entry, regs->ip); + if (perf_guest_cbs && perf_guest_cbs->is_in_guest()) { + /* TODO: We don't support guest os callchain now */ + return; + } + + perf_callchain_store(entry, regs->ip); dump_trace(NULL, regs, NULL, regs->bp, &backtrace_ops, entry); } @@ -1689,7 +1695,7 @@ perf_callchain_user32(struct pt_regs *regs, struct perf_callchain_entry *entry) if (fp < compat_ptr(regs->sp)) break; - callchain_store(entry, frame.return_address); + perf_callchain_store(entry, frame.return_address); fp = compat_ptr(frame.next_frame); } return 1; @@ -1702,19 +1708,20 @@ perf_callchain_user32(struct pt_regs *regs, struct perf_callchain_entry *entry) } #endif -static void -perf_callchain_user(struct pt_regs *regs, struct perf_callchain_entry *entry) +void +perf_callchain_user(struct perf_callchain_entry *entry, struct pt_regs *regs) { struct stack_frame frame; const void __user *fp; - if (!user_mode(regs)) - regs = task_pt_regs(current); + if (perf_guest_cbs && perf_guest_cbs->is_in_guest()) { + /* TODO: We don't support guest os callchain now */ + return; + } fp = (void __user *)regs->bp; - callchain_store(entry, PERF_CONTEXT_USER); - callchain_store(entry, regs->ip); + perf_callchain_store(entry, regs->ip); if (perf_callchain_user32(regs, entry)) return; @@ -1731,52 +1738,11 @@ perf_callchain_user(struct pt_regs *regs, struct perf_callchain_entry *entry) if ((unsigned long)fp < regs->sp) break; - callchain_store(entry, frame.return_address); + perf_callchain_store(entry, frame.return_address); fp = frame.next_frame; } } -static void -perf_do_callchain(struct pt_regs *regs, struct perf_callchain_entry *entry) -{ - int is_user; - - if (!regs) - return; - - is_user = user_mode(regs); - - if (is_user && current->state != TASK_RUNNING) - return; - - if (!is_user) - perf_callchain_kernel(regs, entry); - - if (current->mm) - perf_callchain_user(regs, entry); -} - -struct perf_callchain_entry *perf_callchain(struct pt_regs *regs) -{ - struct perf_callchain_entry *entry; - - if (perf_guest_cbs && perf_guest_cbs->is_in_guest()) { - /* TODO: We don't support guest os callchain now */ - return NULL; - } - - if (in_nmi()) - entry = &__get_cpu_var(pmc_nmi_entry); - else - entry = &__get_cpu_var(pmc_irq_entry); - - entry->nr = 0; - - perf_do_callchain(regs, entry); - - return entry; -} - unsigned long perf_instruction_pointer(struct pt_regs *regs) { unsigned long ip; diff --git a/arch/x86/kernel/cpu/perf_event_amd.c b/arch/x86/kernel/cpu/perf_event_amd.c index c2897b7b4a3b..46d58448c3af 100644 --- a/arch/x86/kernel/cpu/perf_event_amd.c +++ b/arch/x86/kernel/cpu/perf_event_amd.c @@ -52,7 +52,7 @@ static __initconst const u64 amd_hw_cache_event_ids [ C(DTLB) ] = { [ C(OP_READ) ] = { [ C(RESULT_ACCESS) ] = 0x0040, /* Data Cache Accesses */ - [ C(RESULT_MISS) ] = 0x0046, /* L1 DTLB and L2 DLTB Miss */ + [ C(RESULT_MISS) ] = 0x0746, /* L1_DTLB_AND_L2_DLTB_MISS.ALL */ }, [ C(OP_WRITE) ] = { [ C(RESULT_ACCESS) ] = 0, @@ -66,7 +66,7 @@ static __initconst const u64 amd_hw_cache_event_ids [ C(ITLB) ] = { [ C(OP_READ) ] = { [ C(RESULT_ACCESS) ] = 0x0080, /* Instruction fecthes */ - [ C(RESULT_MISS) ] = 0x0085, /* Instr. fetch ITLB misses */ + [ C(RESULT_MISS) ] = 0x0385, /* L1_ITLB_AND_L2_ITLB_MISS.ALL */ }, [ C(OP_WRITE) ] = { [ C(RESULT_ACCESS) ] = -1, diff --git a/arch/x86/kernel/cpu/perf_event_intel.c b/arch/x86/kernel/cpu/perf_event_intel.c index ee05c90012d2..c8f5c088cad1 100644 --- a/arch/x86/kernel/cpu/perf_event_intel.c +++ b/arch/x86/kernel/cpu/perf_event_intel.c @@ -713,18 +713,18 @@ static int intel_pmu_handle_irq(struct pt_regs *regs) struct cpu_hw_events *cpuc; int bit, loops; u64 status; - int handled = 0; + int handled; perf_sample_data_init(&data, 0); cpuc = &__get_cpu_var(cpu_hw_events); intel_pmu_disable_all(); - intel_pmu_drain_bts_buffer(); + handled = intel_pmu_drain_bts_buffer(); status = intel_pmu_get_status(); if (!status) { intel_pmu_enable_all(0); - return 0; + return handled; } loops = 0; @@ -763,7 +763,7 @@ again: data.period = event->hw.last_period; if (perf_event_overflow(event, 1, &data, regs)) - x86_pmu_stop(event); + x86_pmu_stop(event, 0); } /* diff --git a/arch/x86/kernel/cpu/perf_event_intel_ds.c b/arch/x86/kernel/cpu/perf_event_intel_ds.c index 18018d1311cd..4977f9c400e5 100644 --- a/arch/x86/kernel/cpu/perf_event_intel_ds.c +++ b/arch/x86/kernel/cpu/perf_event_intel_ds.c @@ -214,7 +214,7 @@ static void intel_pmu_disable_bts(void) update_debugctlmsr(debugctlmsr); } -static void intel_pmu_drain_bts_buffer(void) +static int intel_pmu_drain_bts_buffer(void) { struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events); struct debug_store *ds = cpuc->ds; @@ -231,16 +231,16 @@ static void intel_pmu_drain_bts_buffer(void) struct pt_regs regs; if (!event) - return; + return 0; if (!ds) - return; + return 0; at = (struct bts_record *)(unsigned long)ds->bts_buffer_base; top = (struct bts_record *)(unsigned long)ds->bts_index; if (top <= at) - return; + return 0; ds->bts_index = ds->bts_buffer_base; @@ -256,7 +256,7 @@ static void intel_pmu_drain_bts_buffer(void) perf_prepare_sample(&header, &data, event, ®s); if (perf_output_begin(&handle, event, header.size * (top - at), 1, 1)) - return; + return 1; for (; at < top; at++) { data.ip = at->from; @@ -270,6 +270,7 @@ static void intel_pmu_drain_bts_buffer(void) /* There's new data available. */ event->hw.interrupts++; event->pending_kill = POLL_IN; + return 1; } /* @@ -491,7 +492,7 @@ static void __intel_pmu_pebs_event(struct perf_event *event, regs.flags &= ~PERF_EFLAGS_EXACT; if (perf_event_overflow(event, 1, &data, ®s)) - x86_pmu_stop(event); + x86_pmu_stop(event, 0); } static void intel_pmu_drain_pebs_core(struct pt_regs *iregs) diff --git a/arch/x86/kernel/cpu/perf_event_p4.c b/arch/x86/kernel/cpu/perf_event_p4.c index 249015173992..81400b93e694 100644 --- a/arch/x86/kernel/cpu/perf_event_p4.c +++ b/arch/x86/kernel/cpu/perf_event_p4.c @@ -18,6 +18,8 @@ struct p4_event_bind { unsigned int opcode; /* Event code and ESCR selector */ unsigned int escr_msr[2]; /* ESCR MSR for this event */ + unsigned int escr_emask; /* valid ESCR EventMask bits */ + unsigned int shared; /* event is shared across threads */ char cntr[2][P4_CNTR_LIMIT]; /* counter index (offset), -1 on abscence */ }; @@ -66,231 +68,435 @@ static struct p4_event_bind p4_event_bind_map[] = { [P4_EVENT_TC_DELIVER_MODE] = { .opcode = P4_OPCODE(P4_EVENT_TC_DELIVER_MODE), .escr_msr = { MSR_P4_TC_ESCR0, MSR_P4_TC_ESCR1 }, + .escr_emask = + P4_ESCR_EMASK_BIT(P4_EVENT_TC_DELIVER_MODE, DD) | + P4_ESCR_EMASK_BIT(P4_EVENT_TC_DELIVER_MODE, DB) | + P4_ESCR_EMASK_BIT(P4_EVENT_TC_DELIVER_MODE, DI) | + P4_ESCR_EMASK_BIT(P4_EVENT_TC_DELIVER_MODE, BD) | + P4_ESCR_EMASK_BIT(P4_EVENT_TC_DELIVER_MODE, BB) | + P4_ESCR_EMASK_BIT(P4_EVENT_TC_DELIVER_MODE, BI) | + P4_ESCR_EMASK_BIT(P4_EVENT_TC_DELIVER_MODE, ID), + .shared = 1, .cntr = { {4, 5, -1}, {6, 7, -1} }, }, [P4_EVENT_BPU_FETCH_REQUEST] = { .opcode = P4_OPCODE(P4_EVENT_BPU_FETCH_REQUEST), .escr_msr = { MSR_P4_BPU_ESCR0, MSR_P4_BPU_ESCR1 }, + .escr_emask = + P4_ESCR_EMASK_BIT(P4_EVENT_BPU_FETCH_REQUEST, TCMISS), .cntr = { {0, -1, -1}, {2, -1, -1} }, }, [P4_EVENT_ITLB_REFERENCE] = { .opcode = P4_OPCODE(P4_EVENT_ITLB_REFERENCE), .escr_msr = { MSR_P4_ITLB_ESCR0, MSR_P4_ITLB_ESCR1 }, + .escr_emask = + P4_ESCR_EMASK_BIT(P4_EVENT_ITLB_REFERENCE, HIT) | + P4_ESCR_EMASK_BIT(P4_EVENT_ITLB_REFERENCE, MISS) | + P4_ESCR_EMASK_BIT(P4_EVENT_ITLB_REFERENCE, HIT_UK), .cntr = { {0, -1, -1}, {2, -1, -1} }, }, [P4_EVENT_MEMORY_CANCEL] = { .opcode = P4_OPCODE(P4_EVENT_MEMORY_CANCEL), .escr_msr = { MSR_P4_DAC_ESCR0, MSR_P4_DAC_ESCR1 }, + .escr_emask = + P4_ESCR_EMASK_BIT(P4_EVENT_MEMORY_CANCEL, ST_RB_FULL) | + P4_ESCR_EMASK_BIT(P4_EVENT_MEMORY_CANCEL, 64K_CONF), .cntr = { {8, 9, -1}, {10, 11, -1} }, }, [P4_EVENT_MEMORY_COMPLETE] = { .opcode = P4_OPCODE(P4_EVENT_MEMORY_COMPLETE), .escr_msr = { MSR_P4_SAAT_ESCR0 , MSR_P4_SAAT_ESCR1 }, + .escr_emask = + P4_ESCR_EMASK_BIT(P4_EVENT_MEMORY_COMPLETE, LSC) | + P4_ESCR_EMASK_BIT(P4_EVENT_MEMORY_COMPLETE, SSC), .cntr = { {8, 9, -1}, {10, 11, -1} }, }, [P4_EVENT_LOAD_PORT_REPLAY] = { .opcode = P4_OPCODE(P4_EVENT_LOAD_PORT_REPLAY), .escr_msr = { MSR_P4_SAAT_ESCR0, MSR_P4_SAAT_ESCR1 }, + .escr_emask = + P4_ESCR_EMASK_BIT(P4_EVENT_LOAD_PORT_REPLAY, SPLIT_LD), .cntr = { {8, 9, -1}, {10, 11, -1} }, }, [P4_EVENT_STORE_PORT_REPLAY] = { .opcode = P4_OPCODE(P4_EVENT_STORE_PORT_REPLAY), .escr_msr = { MSR_P4_SAAT_ESCR0 , MSR_P4_SAAT_ESCR1 }, + .escr_emask = + P4_ESCR_EMASK_BIT(P4_EVENT_STORE_PORT_REPLAY, SPLIT_ST), .cntr = { {8, 9, -1}, {10, 11, -1} }, }, [P4_EVENT_MOB_LOAD_REPLAY] = { .opcode = P4_OPCODE(P4_EVENT_MOB_LOAD_REPLAY), .escr_msr = { MSR_P4_MOB_ESCR0, MSR_P4_MOB_ESCR1 }, + .escr_emask = + P4_ESCR_EMASK_BIT(P4_EVENT_MOB_LOAD_REPLAY, NO_STA) | + P4_ESCR_EMASK_BIT(P4_EVENT_MOB_LOAD_REPLAY, NO_STD) | + P4_ESCR_EMASK_BIT(P4_EVENT_MOB_LOAD_REPLAY, PARTIAL_DATA) | + P4_ESCR_EMASK_BIT(P4_EVENT_MOB_LOAD_REPLAY, UNALGN_ADDR), .cntr = { {0, -1, -1}, {2, -1, -1} }, }, [P4_EVENT_PAGE_WALK_TYPE] = { .opcode = P4_OPCODE(P4_EVENT_PAGE_WALK_TYPE), .escr_msr = { MSR_P4_PMH_ESCR0, MSR_P4_PMH_ESCR1 }, + .escr_emask = + P4_ESCR_EMASK_BIT(P4_EVENT_PAGE_WALK_TYPE, DTMISS) | + P4_ESCR_EMASK_BIT(P4_EVENT_PAGE_WALK_TYPE, ITMISS), + .shared = 1, .cntr = { {0, -1, -1}, {2, -1, -1} }, }, [P4_EVENT_BSQ_CACHE_REFERENCE] = { .opcode = P4_OPCODE(P4_EVENT_BSQ_CACHE_REFERENCE), .escr_msr = { MSR_P4_BSU_ESCR0, MSR_P4_BSU_ESCR1 }, + .escr_emask = + P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_CACHE_REFERENCE, RD_2ndL_HITS) | + P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_CACHE_REFERENCE, RD_2ndL_HITE) | + P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_CACHE_REFERENCE, RD_2ndL_HITM) | + P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_CACHE_REFERENCE, RD_3rdL_HITS) | + P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_CACHE_REFERENCE, RD_3rdL_HITE) | + P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_CACHE_REFERENCE, RD_3rdL_HITM) | + P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_CACHE_REFERENCE, RD_2ndL_MISS) | + P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_CACHE_REFERENCE, RD_3rdL_MISS) | + P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_CACHE_REFERENCE, WR_2ndL_MISS), .cntr = { {0, -1, -1}, {2, -1, -1} }, }, [P4_EVENT_IOQ_ALLOCATION] = { .opcode = P4_OPCODE(P4_EVENT_IOQ_ALLOCATION), .escr_msr = { MSR_P4_FSB_ESCR0, MSR_P4_FSB_ESCR1 }, + .escr_emask = + P4_ESCR_EMASK_BIT(P4_EVENT_IOQ_ALLOCATION, DEFAULT) | + P4_ESCR_EMASK_BIT(P4_EVENT_IOQ_ALLOCATION, ALL_READ) | + P4_ESCR_EMASK_BIT(P4_EVENT_IOQ_ALLOCATION, ALL_WRITE) | + P4_ESCR_EMASK_BIT(P4_EVENT_IOQ_ALLOCATION, MEM_UC) | + P4_ESCR_EMASK_BIT(P4_EVENT_IOQ_ALLOCATION, MEM_WC) | + P4_ESCR_EMASK_BIT(P4_EVENT_IOQ_ALLOCATION, MEM_WT) | + P4_ESCR_EMASK_BIT(P4_EVENT_IOQ_ALLOCATION, MEM_WP) | + P4_ESCR_EMASK_BIT(P4_EVENT_IOQ_ALLOCATION, MEM_WB) | + P4_ESCR_EMASK_BIT(P4_EVENT_IOQ_ALLOCATION, OWN) | + P4_ESCR_EMASK_BIT(P4_EVENT_IOQ_ALLOCATION, OTHER) | + P4_ESCR_EMASK_BIT(P4_EVENT_IOQ_ALLOCATION, PREFETCH), .cntr = { {0, -1, -1}, {2, -1, -1} }, }, [P4_EVENT_IOQ_ACTIVE_ENTRIES] = { /* shared ESCR */ .opcode = P4_OPCODE(P4_EVENT_IOQ_ACTIVE_ENTRIES), .escr_msr = { MSR_P4_FSB_ESCR1, MSR_P4_FSB_ESCR1 }, + .escr_emask = + P4_ESCR_EMASK_BIT(P4_EVENT_IOQ_ACTIVE_ENTRIES, DEFAULT) | + P4_ESCR_EMASK_BIT(P4_EVENT_IOQ_ACTIVE_ENTRIES, ALL_READ) | + P4_ESCR_EMASK_BIT(P4_EVENT_IOQ_ACTIVE_ENTRIES, ALL_WRITE) | + P4_ESCR_EMASK_BIT(P4_EVENT_IOQ_ACTIVE_ENTRIES, MEM_UC) | + P4_ESCR_EMASK_BIT(P4_EVENT_IOQ_ACTIVE_ENTRIES, MEM_WC) | + P4_ESCR_EMASK_BIT(P4_EVENT_IOQ_ACTIVE_ENTRIES, MEM_WT) | + P4_ESCR_EMASK_BIT(P4_EVENT_IOQ_ACTIVE_ENTRIES, MEM_WP) | + P4_ESCR_EMASK_BIT(P4_EVENT_IOQ_ACTIVE_ENTRIES, MEM_WB) | + P4_ESCR_EMASK_BIT(P4_EVENT_IOQ_ACTIVE_ENTRIES, OWN) | + P4_ESCR_EMASK_BIT(P4_EVENT_IOQ_ACTIVE_ENTRIES, OTHER) | + P4_ESCR_EMASK_BIT(P4_EVENT_IOQ_ACTIVE_ENTRIES, PREFETCH), .cntr = { {2, -1, -1}, {3, -1, -1} }, }, [P4_EVENT_FSB_DATA_ACTIVITY] = { .opcode = P4_OPCODE(P4_EVENT_FSB_DATA_ACTIVITY), .escr_msr = { MSR_P4_FSB_ESCR0, MSR_P4_FSB_ESCR1 }, + .escr_emask = + P4_ESCR_EMASK_BIT(P4_EVENT_FSB_DATA_ACTIVITY, DRDY_DRV) | + P4_ESCR_EMASK_BIT(P4_EVENT_FSB_DATA_ACTIVITY, DRDY_OWN) | + P4_ESCR_EMASK_BIT(P4_EVENT_FSB_DATA_ACTIVITY, DRDY_OTHER) | + P4_ESCR_EMASK_BIT(P4_EVENT_FSB_DATA_ACTIVITY, DBSY_DRV) | + P4_ESCR_EMASK_BIT(P4_EVENT_FSB_DATA_ACTIVITY, DBSY_OWN) | + P4_ESCR_EMASK_BIT(P4_EVENT_FSB_DATA_ACTIVITY, DBSY_OTHER), + .shared = 1, .cntr = { {0, -1, -1}, {2, -1, -1} }, }, [P4_EVENT_BSQ_ALLOCATION] = { /* shared ESCR, broken CCCR1 */ .opcode = P4_OPCODE(P4_EVENT_BSQ_ALLOCATION), .escr_msr = { MSR_P4_BSU_ESCR0, MSR_P4_BSU_ESCR0 }, + .escr_emask = + P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_ALLOCATION, REQ_TYPE0) | + P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_ALLOCATION, REQ_TYPE1) | + P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_ALLOCATION, REQ_LEN0) | + P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_ALLOCATION, REQ_LEN1) | + P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_ALLOCATION, REQ_IO_TYPE) | + P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_ALLOCATION, REQ_LOCK_TYPE) | + P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_ALLOCATION, REQ_CACHE_TYPE) | + P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_ALLOCATION, REQ_SPLIT_TYPE) | + P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_ALLOCATION, REQ_DEM_TYPE) | + P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_ALLOCATION, REQ_ORD_TYPE) | + P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_ALLOCATION, MEM_TYPE0) | + P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_ALLOCATION, MEM_TYPE1) | + P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_ALLOCATION, MEM_TYPE2), .cntr = { {0, -1, -1}, {1, -1, -1} }, }, [P4_EVENT_BSQ_ACTIVE_ENTRIES] = { /* shared ESCR */ .opcode = P4_OPCODE(P4_EVENT_BSQ_ACTIVE_ENTRIES), .escr_msr = { MSR_P4_BSU_ESCR1 , MSR_P4_BSU_ESCR1 }, + .escr_emask = + P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_ACTIVE_ENTRIES, REQ_TYPE0) | + P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_ACTIVE_ENTRIES, REQ_TYPE1) | + P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_ACTIVE_ENTRIES, REQ_LEN0) | + P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_ACTIVE_ENTRIES, REQ_LEN1) | + P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_ACTIVE_ENTRIES, REQ_IO_TYPE) | + P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_ACTIVE_ENTRIES, REQ_LOCK_TYPE) | + P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_ACTIVE_ENTRIES, REQ_CACHE_TYPE) | + P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_ACTIVE_ENTRIES, REQ_SPLIT_TYPE) | + P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_ACTIVE_ENTRIES, REQ_DEM_TYPE) | + P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_ACTIVE_ENTRIES, REQ_ORD_TYPE) | + P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_ACTIVE_ENTRIES, MEM_TYPE0) | + P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_ACTIVE_ENTRIES, MEM_TYPE1) | + P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_ACTIVE_ENTRIES, MEM_TYPE2), .cntr = { {2, -1, -1}, {3, -1, -1} }, }, [P4_EVENT_SSE_INPUT_ASSIST] = { .opcode = P4_OPCODE(P4_EVENT_SSE_INPUT_ASSIST), .escr_msr = { MSR_P4_FIRM_ESCR0, MSR_P4_FIRM_ESCR1 }, + .escr_emask = + P4_ESCR_EMASK_BIT(P4_EVENT_SSE_INPUT_ASSIST, ALL), + .shared = 1, .cntr = { {8, 9, -1}, {10, 11, -1} }, }, [P4_EVENT_PACKED_SP_UOP] = { .opcode = P4_OPCODE(P4_EVENT_PACKED_SP_UOP), .escr_msr = { MSR_P4_FIRM_ESCR0, MSR_P4_FIRM_ESCR1 }, + .escr_emask = + P4_ESCR_EMASK_BIT(P4_EVENT_PACKED_SP_UOP, ALL), + .shared = 1, .cntr = { {8, 9, -1}, {10, 11, -1} }, }, [P4_EVENT_PACKED_DP_UOP] = { .opcode = P4_OPCODE(P4_EVENT_PACKED_DP_UOP), .escr_msr = { MSR_P4_FIRM_ESCR0, MSR_P4_FIRM_ESCR1 }, + .escr_emask = + P4_ESCR_EMASK_BIT(P4_EVENT_PACKED_DP_UOP, ALL), + .shared = 1, .cntr = { {8, 9, -1}, {10, 11, -1} }, }, [P4_EVENT_SCALAR_SP_UOP] = { .opcode = P4_OPCODE(P4_EVENT_SCALAR_SP_UOP), .escr_msr = { MSR_P4_FIRM_ESCR0, MSR_P4_FIRM_ESCR1 }, + .escr_emask = + P4_ESCR_EMASK_BIT(P4_EVENT_SCALAR_SP_UOP, ALL), + .shared = 1, .cntr = { {8, 9, -1}, {10, 11, -1} }, }, [P4_EVENT_SCALAR_DP_UOP] = { .opcode = P4_OPCODE(P4_EVENT_SCALAR_DP_UOP), .escr_msr = { MSR_P4_FIRM_ESCR0, MSR_P4_FIRM_ESCR1 }, + .escr_emask = + P4_ESCR_EMASK_BIT(P4_EVENT_SCALAR_DP_UOP, ALL), + .shared = 1, .cntr = { {8, 9, -1}, {10, 11, -1} }, }, [P4_EVENT_64BIT_MMX_UOP] = { .opcode = P4_OPCODE(P4_EVENT_64BIT_MMX_UOP), .escr_msr = { MSR_P4_FIRM_ESCR0, MSR_P4_FIRM_ESCR1 }, + .escr_emask = + P4_ESCR_EMASK_BIT(P4_EVENT_64BIT_MMX_UOP, ALL), + .shared = 1, .cntr = { {8, 9, -1}, {10, 11, -1} }, }, [P4_EVENT_128BIT_MMX_UOP] = { .opcode = P4_OPCODE(P4_EVENT_128BIT_MMX_UOP), .escr_msr = { MSR_P4_FIRM_ESCR0, MSR_P4_FIRM_ESCR1 }, + .escr_emask = + P4_ESCR_EMASK_BIT(P4_EVENT_128BIT_MMX_UOP, ALL), + .shared = 1, .cntr = { {8, 9, -1}, {10, 11, -1} }, }, [P4_EVENT_X87_FP_UOP] = { .opcode = P4_OPCODE(P4_EVENT_X87_FP_UOP), .escr_msr = { MSR_P4_FIRM_ESCR0, MSR_P4_FIRM_ESCR1 }, + .escr_emask = + P4_ESCR_EMASK_BIT(P4_EVENT_X87_FP_UOP, ALL), + .shared = 1, .cntr = { {8, 9, -1}, {10, 11, -1} }, }, [P4_EVENT_TC_MISC] = { .opcode = P4_OPCODE(P4_EVENT_TC_MISC), .escr_msr = { MSR_P4_TC_ESCR0, MSR_P4_TC_ESCR1 }, + .escr_emask = + P4_ESCR_EMASK_BIT(P4_EVENT_TC_MISC, FLUSH), .cntr = { {4, 5, -1}, {6, 7, -1} }, }, [P4_EVENT_GLOBAL_POWER_EVENTS] = { .opcode = P4_OPCODE(P4_EVENT_GLOBAL_POWER_EVENTS), .escr_msr = { MSR_P4_FSB_ESCR0, MSR_P4_FSB_ESCR1 }, + .escr_emask = + P4_ESCR_EMASK_BIT(P4_EVENT_GLOBAL_POWER_EVENTS, RUNNING), .cntr = { {0, -1, -1}, {2, -1, -1} }, }, [P4_EVENT_TC_MS_XFER] = { .opcode = P4_OPCODE(P4_EVENT_TC_MS_XFER), .escr_msr = { MSR_P4_MS_ESCR0, MSR_P4_MS_ESCR1 }, + .escr_emask = + P4_ESCR_EMASK_BIT(P4_EVENT_TC_MS_XFER, CISC), .cntr = { {4, 5, -1}, {6, 7, -1} }, }, [P4_EVENT_UOP_QUEUE_WRITES] = { .opcode = P4_OPCODE(P4_EVENT_UOP_QUEUE_WRITES), .escr_msr = { MSR_P4_MS_ESCR0, MSR_P4_MS_ESCR1 }, + .escr_emask = + P4_ESCR_EMASK_BIT(P4_EVENT_UOP_QUEUE_WRITES, FROM_TC_BUILD) | + P4_ESCR_EMASK_BIT(P4_EVENT_UOP_QUEUE_WRITES, FROM_TC_DELIVER) | + P4_ESCR_EMASK_BIT(P4_EVENT_UOP_QUEUE_WRITES, FROM_ROM), .cntr = { {4, 5, -1}, {6, 7, -1} }, }, [P4_EVENT_RETIRED_MISPRED_BRANCH_TYPE] = { .opcode = P4_OPCODE(P4_EVENT_RETIRED_MISPRED_BRANCH_TYPE), .escr_msr = { MSR_P4_TBPU_ESCR0 , MSR_P4_TBPU_ESCR0 }, + .escr_emask = + P4_ESCR_EMASK_BIT(P4_EVENT_RETIRED_MISPRED_BRANCH_TYPE, CONDITIONAL) | + P4_ESCR_EMASK_BIT(P4_EVENT_RETIRED_MISPRED_BRANCH_TYPE, CALL) | + P4_ESCR_EMASK_BIT(P4_EVENT_RETIRED_MISPRED_BRANCH_TYPE, RETURN) | + P4_ESCR_EMASK_BIT(P4_EVENT_RETIRED_MISPRED_BRANCH_TYPE, INDIRECT), .cntr = { {4, 5, -1}, {6, 7, -1} }, }, [P4_EVENT_RETIRED_BRANCH_TYPE] = { .opcode = P4_OPCODE(P4_EVENT_RETIRED_BRANCH_TYPE), .escr_msr = { MSR_P4_TBPU_ESCR0 , MSR_P4_TBPU_ESCR1 }, + .escr_emask = + P4_ESCR_EMASK_BIT(P4_EVENT_RETIRED_BRANCH_TYPE, CONDITIONAL) | + P4_ESCR_EMASK_BIT(P4_EVENT_RETIRED_BRANCH_TYPE, CALL) | + P4_ESCR_EMASK_BIT(P4_EVENT_RETIRED_BRANCH_TYPE, RETURN) | + P4_ESCR_EMASK_BIT(P4_EVENT_RETIRED_BRANCH_TYPE, INDIRECT), .cntr = { {4, 5, -1}, {6, 7, -1} }, }, [P4_EVENT_RESOURCE_STALL] = { .opcode = P4_OPCODE(P4_EVENT_RESOURCE_STALL), .escr_msr = { MSR_P4_ALF_ESCR0, MSR_P4_ALF_ESCR1 }, + .escr_emask = + P4_ESCR_EMASK_BIT(P4_EVENT_RESOURCE_STALL, SBFULL), .cntr = { {12, 13, 16}, {14, 15, 17} }, }, [P4_EVENT_WC_BUFFER] = { .opcode = P4_OPCODE(P4_EVENT_WC_BUFFER), .escr_msr = { MSR_P4_DAC_ESCR0, MSR_P4_DAC_ESCR1 }, + .escr_emask = + P4_ESCR_EMASK_BIT(P4_EVENT_WC_BUFFER, WCB_EVICTS) | + P4_ESCR_EMASK_BIT(P4_EVENT_WC_BUFFER, WCB_FULL_EVICTS), + .shared = 1, .cntr = { {8, 9, -1}, {10, 11, -1} }, }, [P4_EVENT_B2B_CYCLES] = { .opcode = P4_OPCODE(P4_EVENT_B2B_CYCLES), .escr_msr = { MSR_P4_FSB_ESCR0, MSR_P4_FSB_ESCR1 }, + .escr_emask = 0, .cntr = { {0, -1, -1}, {2, -1, -1} }, }, [P4_EVENT_BNR] = { .opcode = P4_OPCODE(P4_EVENT_BNR), .escr_msr = { MSR_P4_FSB_ESCR0, MSR_P4_FSB_ESCR1 }, + .escr_emask = 0, .cntr = { {0, -1, -1}, {2, -1, -1} }, }, [P4_EVENT_SNOOP] = { .opcode = P4_OPCODE(P4_EVENT_SNOOP), .escr_msr = { MSR_P4_FSB_ESCR0, MSR_P4_FSB_ESCR1 }, + .escr_emask = 0, .cntr = { {0, -1, -1}, {2, -1, -1} }, }, [P4_EVENT_RESPONSE] = { .opcode = P4_OPCODE(P4_EVENT_RESPONSE), .escr_msr = { MSR_P4_FSB_ESCR0, MSR_P4_FSB_ESCR1 }, + .escr_emask = 0, .cntr = { {0, -1, -1}, {2, -1, -1} }, }, [P4_EVENT_FRONT_END_EVENT] = { .opcode = P4_OPCODE(P4_EVENT_FRONT_END_EVENT), .escr_msr = { MSR_P4_CRU_ESCR2, MSR_P4_CRU_ESCR3 }, + .escr_emask = + P4_ESCR_EMASK_BIT(P4_EVENT_FRONT_END_EVENT, NBOGUS) | + P4_ESCR_EMASK_BIT(P4_EVENT_FRONT_END_EVENT, BOGUS), .cntr = { {12, 13, 16}, {14, 15, 17} }, }, [P4_EVENT_EXECUTION_EVENT] = { .opcode = P4_OPCODE(P4_EVENT_EXECUTION_EVENT), .escr_msr = { MSR_P4_CRU_ESCR2, MSR_P4_CRU_ESCR3 }, + .escr_emask = + P4_ESCR_EMASK_BIT(P4_EVENT_EXECUTION_EVENT, NBOGUS0) | + P4_ESCR_EMASK_BIT(P4_EVENT_EXECUTION_EVENT, NBOGUS1) | + P4_ESCR_EMASK_BIT(P4_EVENT_EXECUTION_EVENT, NBOGUS2) | + P4_ESCR_EMASK_BIT(P4_EVENT_EXECUTION_EVENT, NBOGUS3) | + P4_ESCR_EMASK_BIT(P4_EVENT_EXECUTION_EVENT, BOGUS0) | + P4_ESCR_EMASK_BIT(P4_EVENT_EXECUTION_EVENT, BOGUS1) | + P4_ESCR_EMASK_BIT(P4_EVENT_EXECUTION_EVENT, BOGUS2) | + P4_ESCR_EMASK_BIT(P4_EVENT_EXECUTION_EVENT, BOGUS3), .cntr = { {12, 13, 16}, {14, 15, 17} }, }, [P4_EVENT_REPLAY_EVENT] = { .opcode = P4_OPCODE(P4_EVENT_REPLAY_EVENT), .escr_msr = { MSR_P4_CRU_ESCR2, MSR_P4_CRU_ESCR3 }, + .escr_emask = + P4_ESCR_EMASK_BIT(P4_EVENT_REPLAY_EVENT, NBOGUS) | + P4_ESCR_EMASK_BIT(P4_EVENT_REPLAY_EVENT, BOGUS), .cntr = { {12, 13, 16}, {14, 15, 17} }, }, [P4_EVENT_INSTR_RETIRED] = { .opcode = P4_OPCODE(P4_EVENT_INSTR_RETIRED), .escr_msr = { MSR_P4_CRU_ESCR0, MSR_P4_CRU_ESCR1 }, + .escr_emask = + P4_ESCR_EMASK_BIT(P4_EVENT_INSTR_RETIRED, NBOGUSNTAG) | + P4_ESCR_EMASK_BIT(P4_EVENT_INSTR_RETIRED, NBOGUSTAG) | + P4_ESCR_EMASK_BIT(P4_EVENT_INSTR_RETIRED, BOGUSNTAG) | + P4_ESCR_EMASK_BIT(P4_EVENT_INSTR_RETIRED, BOGUSTAG), .cntr = { {12, 13, 16}, {14, 15, 17} }, }, [P4_EVENT_UOPS_RETIRED] = { .opcode = P4_OPCODE(P4_EVENT_UOPS_RETIRED), .escr_msr = { MSR_P4_CRU_ESCR0, MSR_P4_CRU_ESCR1 }, + .escr_emask = + P4_ESCR_EMASK_BIT(P4_EVENT_UOPS_RETIRED, NBOGUS) | + P4_ESCR_EMASK_BIT(P4_EVENT_UOPS_RETIRED, BOGUS), .cntr = { {12, 13, 16}, {14, 15, 17} }, }, [P4_EVENT_UOP_TYPE] = { .opcode = P4_OPCODE(P4_EVENT_UOP_TYPE), .escr_msr = { MSR_P4_RAT_ESCR0, MSR_P4_RAT_ESCR1 }, + .escr_emask = + P4_ESCR_EMASK_BIT(P4_EVENT_UOP_TYPE, TAGLOADS) | + P4_ESCR_EMASK_BIT(P4_EVENT_UOP_TYPE, TAGSTORES), .cntr = { {12, 13, 16}, {14, 15, 17} }, }, [P4_EVENT_BRANCH_RETIRED] = { .opcode = P4_OPCODE(P4_EVENT_BRANCH_RETIRED), .escr_msr = { MSR_P4_CRU_ESCR2, MSR_P4_CRU_ESCR3 }, + .escr_emask = + P4_ESCR_EMASK_BIT(P4_EVENT_BRANCH_RETIRED, MMNP) | + P4_ESCR_EMASK_BIT(P4_EVENT_BRANCH_RETIRED, MMNM) | + P4_ESCR_EMASK_BIT(P4_EVENT_BRANCH_RETIRED, MMTP) | + P4_ESCR_EMASK_BIT(P4_EVENT_BRANCH_RETIRED, MMTM), .cntr = { {12, 13, 16}, {14, 15, 17} }, }, [P4_EVENT_MISPRED_BRANCH_RETIRED] = { .opcode = P4_OPCODE(P4_EVENT_MISPRED_BRANCH_RETIRED), .escr_msr = { MSR_P4_CRU_ESCR0, MSR_P4_CRU_ESCR1 }, + .escr_emask = + P4_ESCR_EMASK_BIT(P4_EVENT_MISPRED_BRANCH_RETIRED, NBOGUS), .cntr = { {12, 13, 16}, {14, 15, 17} }, }, [P4_EVENT_X87_ASSIST] = { .opcode = P4_OPCODE(P4_EVENT_X87_ASSIST), .escr_msr = { MSR_P4_CRU_ESCR2, MSR_P4_CRU_ESCR3 }, + .escr_emask = + P4_ESCR_EMASK_BIT(P4_EVENT_X87_ASSIST, FPSU) | + P4_ESCR_EMASK_BIT(P4_EVENT_X87_ASSIST, FPSO) | + P4_ESCR_EMASK_BIT(P4_EVENT_X87_ASSIST, POAO) | + P4_ESCR_EMASK_BIT(P4_EVENT_X87_ASSIST, POAU) | + P4_ESCR_EMASK_BIT(P4_EVENT_X87_ASSIST, PREA), .cntr = { {12, 13, 16}, {14, 15, 17} }, }, [P4_EVENT_MACHINE_CLEAR] = { .opcode = P4_OPCODE(P4_EVENT_MACHINE_CLEAR), .escr_msr = { MSR_P4_CRU_ESCR2, MSR_P4_CRU_ESCR3 }, + .escr_emask = + P4_ESCR_EMASK_BIT(P4_EVENT_MACHINE_CLEAR, CLEAR) | + P4_ESCR_EMASK_BIT(P4_EVENT_MACHINE_CLEAR, MOCLEAR) | + P4_ESCR_EMASK_BIT(P4_EVENT_MACHINE_CLEAR, SMCLEAR), .cntr = { {12, 13, 16}, {14, 15, 17} }, }, [P4_EVENT_INSTR_COMPLETED] = { .opcode = P4_OPCODE(P4_EVENT_INSTR_COMPLETED), .escr_msr = { MSR_P4_CRU_ESCR0, MSR_P4_CRU_ESCR1 }, + .escr_emask = + P4_ESCR_EMASK_BIT(P4_EVENT_INSTR_COMPLETED, NBOGUS) | + P4_ESCR_EMASK_BIT(P4_EVENT_INSTR_COMPLETED, BOGUS), .cntr = { {12, 13, 16}, {14, 15, 17} }, }, }; @@ -428,29 +634,73 @@ static u64 p4_pmu_event_map(int hw_event) return config; } +/* check cpu model specifics */ +static bool p4_event_match_cpu_model(unsigned int event_idx) +{ + /* INSTR_COMPLETED event only exist for model 3, 4, 6 (Prescott) */ + if (event_idx == P4_EVENT_INSTR_COMPLETED) { + if (boot_cpu_data.x86_model != 3 && + boot_cpu_data.x86_model != 4 && + boot_cpu_data.x86_model != 6) + return false; + } + + /* + * For info + * - IQ_ESCR0, IQ_ESCR1 only for models 1 and 2 + */ + + return true; +} + static int p4_validate_raw_event(struct perf_event *event) { - unsigned int v; + unsigned int v, emask; - /* user data may have out-of-bound event index */ + /* User data may have out-of-bound event index */ v = p4_config_unpack_event(event->attr.config); - if (v >= ARRAY_SIZE(p4_event_bind_map)) { - pr_warning("P4 PMU: Unknown event code: %d\n", v); + if (v >= ARRAY_SIZE(p4_event_bind_map)) + return -EINVAL; + + /* It may be unsupported: */ + if (!p4_event_match_cpu_model(v)) return -EINVAL; + + /* + * NOTE: P4_CCCR_THREAD_ANY has not the same meaning as + * in Architectural Performance Monitoring, it means not + * on _which_ logical cpu to count but rather _when_, ie it + * depends on logical cpu state -- count event if one cpu active, + * none, both or any, so we just allow user to pass any value + * desired. + * + * In turn we always set Tx_OS/Tx_USR bits bound to logical + * cpu without their propagation to another cpu + */ + + /* + * if an event is shared accross the logical threads + * the user needs special permissions to be able to use it + */ + if (p4_event_bind_map[v].shared) { + if (perf_paranoid_cpu() && !capable(CAP_SYS_ADMIN)) + return -EACCES; } + /* ESCR EventMask bits may be invalid */ + emask = p4_config_unpack_escr(event->attr.config) & P4_ESCR_EVENTMASK_MASK; + if (emask & ~p4_event_bind_map[v].escr_emask) + return -EINVAL; + /* - * it may have some screwed PEBS bits + * it may have some invalid PEBS bits */ - if (p4_config_pebs_has(event->attr.config, P4_PEBS_CONFIG_ENABLE)) { - pr_warning("P4 PMU: PEBS are not supported yet\n"); + if (p4_config_pebs_has(event->attr.config, P4_PEBS_CONFIG_ENABLE)) return -EINVAL; - } + v = p4_config_unpack_metric(event->attr.config); - if (v >= ARRAY_SIZE(p4_pebs_bind_map)) { - pr_warning("P4 PMU: Unknown metric code: %d\n", v); + if (v >= ARRAY_SIZE(p4_pebs_bind_map)) return -EINVAL; - } return 0; } @@ -478,27 +728,21 @@ static int p4_hw_config(struct perf_event *event) if (event->attr.type == PERF_TYPE_RAW) { + /* + * Clear bits we reserve to be managed by kernel itself + * and never allowed from a user space + */ + event->attr.config &= P4_CONFIG_MASK; + rc = p4_validate_raw_event(event); if (rc) goto out; /* - * We don't control raw events so it's up to the caller - * to pass sane values (and we don't count the thread number - * on HT machine but allow HT-compatible specifics to be - * passed on) - * * Note that for RAW events we allow user to use P4_CCCR_RESERVED * bits since we keep additional info here (for cache events and etc) - * - * XXX: HT wide things should check perf_paranoid_cpu() && - * CAP_SYS_ADMIN */ - event->hw.config |= event->attr.config & - (p4_config_pack_escr(P4_ESCR_MASK_HT) | - p4_config_pack_cccr(P4_CCCR_MASK_HT | P4_CCCR_RESERVED)); - - event->hw.config &= ~P4_CCCR_FORCE_OVF; + event->hw.config |= event->attr.config; } rc = x86_setup_perfctr(event); diff --git a/arch/x86/kernel/cpu/perfctr-watchdog.c b/arch/x86/kernel/cpu/perfctr-watchdog.c index fb329e9f8494..d9f4ff8fcd69 100644 --- a/arch/x86/kernel/cpu/perfctr-watchdog.c +++ b/arch/x86/kernel/cpu/perfctr-watchdog.c @@ -700,11 +700,10 @@ static void probe_nmi_watchdog(void) { switch (boot_cpu_data.x86_vendor) { case X86_VENDOR_AMD: - if (boot_cpu_data.x86 != 6 && boot_cpu_data.x86 != 15 && - boot_cpu_data.x86 != 16 && boot_cpu_data.x86 != 17) - return; - wd_ops = &k7_wd_ops; - break; + if (boot_cpu_data.x86 == 6 || + (boot_cpu_data.x86 >= 0xf && boot_cpu_data.x86 <= 0x15)) + wd_ops = &k7_wd_ops; + return; case X86_VENDOR_INTEL: /* Work around where perfctr1 doesn't have a working enable * bit as described in the following errata: diff --git a/arch/x86/kernel/cpu/scattered.c b/arch/x86/kernel/cpu/scattered.c index d49079515122..c7f64e6f537a 100644 --- a/arch/x86/kernel/cpu/scattered.c +++ b/arch/x86/kernel/cpu/scattered.c @@ -44,6 +44,12 @@ void __cpuinit init_scattered_cpuid_features(struct cpuinfo_x86 *c) { X86_FEATURE_LBRV, CR_EDX, 1, 0x8000000a, 0 }, { X86_FEATURE_SVML, CR_EDX, 2, 0x8000000a, 0 }, { X86_FEATURE_NRIPS, CR_EDX, 3, 0x8000000a, 0 }, + { X86_FEATURE_TSCRATEMSR, CR_EDX, 4, 0x8000000a, 0 }, + { X86_FEATURE_VMCBCLEAN, CR_EDX, 5, 0x8000000a, 0 }, + { X86_FEATURE_FLUSHBYASID, CR_EDX, 6, 0x8000000a, 0 }, + { X86_FEATURE_DECODEASSISTS, CR_EDX, 7, 0x8000000a, 0 }, + { X86_FEATURE_PAUSEFILTER, CR_EDX,10, 0x8000000a, 0 }, + { X86_FEATURE_PFTHRESHOLD, CR_EDX,12, 0x8000000a, 0 }, { 0, 0, 0, 0, 0 } }; diff --git a/arch/x86/kernel/crash_dump_64.c b/arch/x86/kernel/crash_dump_64.c index 045b36cada65..994828899e09 100644 --- a/arch/x86/kernel/crash_dump_64.c +++ b/arch/x86/kernel/crash_dump_64.c @@ -34,7 +34,7 @@ ssize_t copy_oldmem_page(unsigned long pfn, char *buf, if (!csize) return 0; - vaddr = ioremap(pfn << PAGE_SHIFT, PAGE_SIZE); + vaddr = ioremap_cache(pfn << PAGE_SHIFT, PAGE_SIZE); if (!vaddr) return -ENOMEM; @@ -46,6 +46,7 @@ ssize_t copy_oldmem_page(unsigned long pfn, char *buf, } else memcpy(buf, vaddr + offset, csize); + set_iounmap_nonlazy(); iounmap(vaddr); return csize; } diff --git a/arch/x86/kernel/early-quirks.c b/arch/x86/kernel/early-quirks.c index ebdb85cf2686..76b8cd953dee 100644 --- a/arch/x86/kernel/early-quirks.c +++ b/arch/x86/kernel/early-quirks.c @@ -97,7 +97,6 @@ static void __init nvidia_bugs(int num, int slot, int func) } #if defined(CONFIG_ACPI) && defined(CONFIG_X86_IO_APIC) -#if defined(CONFIG_ACPI) && defined(CONFIG_X86_IO_APIC) static u32 __init ati_ixp4x0_rev(int num, int slot, int func) { u32 d; @@ -115,7 +114,6 @@ static u32 __init ati_ixp4x0_rev(int num, int slot, int func) d &= 0xff; return d; } -#endif static void __init ati_bugs(int num, int slot, int func) { diff --git a/arch/x86/kernel/early_printk.c b/arch/x86/kernel/early_printk.c index fa99bae75ace..4572f25f9325 100644 --- a/arch/x86/kernel/early_printk.c +++ b/arch/x86/kernel/early_printk.c @@ -14,6 +14,7 @@ #include <xen/hvc-console.h> #include <asm/pci-direct.h> #include <asm/fixmap.h> +#include <asm/mrst.h> #include <asm/pgtable.h> #include <linux/usb/ehci_def.h> @@ -239,6 +240,18 @@ static int __init setup_early_printk(char *buf) if (!strncmp(buf, "xen", 3)) early_console_register(&xenboot_console, keep); #endif +#ifdef CONFIG_X86_MRST_EARLY_PRINTK + if (!strncmp(buf, "mrst", 4)) { + mrst_early_console_init(); + early_console_register(&early_mrst_console, keep); + } + + if (!strncmp(buf, "hsu", 3)) { + hsu_early_console_init(); + early_console_register(&early_hsu_console, keep); + } + +#endif buf++; } return 0; diff --git a/arch/x86/kernel/early_printk_mrst.c b/arch/x86/kernel/early_printk_mrst.c new file mode 100644 index 000000000000..65df603622b2 --- /dev/null +++ b/arch/x86/kernel/early_printk_mrst.c @@ -0,0 +1,319 @@ +/* + * early_printk_mrst.c - early consoles for Intel MID platforms + * + * Copyright (c) 2008-2010, Intel Corporation + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; version 2 + * of the License. + */ + +/* + * This file implements two early consoles named mrst and hsu. + * mrst is based on Maxim3110 spi-uart device, it exists in both + * Moorestown and Medfield platforms, while hsu is based on a High + * Speed UART device which only exists in the Medfield platform + */ + +#include <linux/serial_reg.h> +#include <linux/serial_mfd.h> +#include <linux/kmsg_dump.h> +#include <linux/console.h> +#include <linux/kernel.h> +#include <linux/delay.h> +#include <linux/init.h> +#include <linux/io.h> + +#include <asm/fixmap.h> +#include <asm/pgtable.h> +#include <asm/mrst.h> + +#define MRST_SPI_TIMEOUT 0x200000 +#define MRST_REGBASE_SPI0 0xff128000 +#define MRST_REGBASE_SPI1 0xff128400 +#define MRST_CLK_SPI0_REG 0xff11d86c + +/* Bit fields in CTRLR0 */ +#define SPI_DFS_OFFSET 0 + +#define SPI_FRF_OFFSET 4 +#define SPI_FRF_SPI 0x0 +#define SPI_FRF_SSP 0x1 +#define SPI_FRF_MICROWIRE 0x2 +#define SPI_FRF_RESV 0x3 + +#define SPI_MODE_OFFSET 6 +#define SPI_SCPH_OFFSET 6 +#define SPI_SCOL_OFFSET 7 +#define SPI_TMOD_OFFSET 8 +#define SPI_TMOD_TR 0x0 /* xmit & recv */ +#define SPI_TMOD_TO 0x1 /* xmit only */ +#define SPI_TMOD_RO 0x2 /* recv only */ +#define SPI_TMOD_EPROMREAD 0x3 /* eeprom read mode */ + +#define SPI_SLVOE_OFFSET 10 +#define SPI_SRL_OFFSET 11 +#define SPI_CFS_OFFSET 12 + +/* Bit fields in SR, 7 bits */ +#define SR_MASK 0x7f /* cover 7 bits */ +#define SR_BUSY (1 << 0) +#define SR_TF_NOT_FULL (1 << 1) +#define SR_TF_EMPT (1 << 2) +#define SR_RF_NOT_EMPT (1 << 3) +#define SR_RF_FULL (1 << 4) +#define SR_TX_ERR (1 << 5) +#define SR_DCOL (1 << 6) + +struct dw_spi_reg { + u32 ctrl0; + u32 ctrl1; + u32 ssienr; + u32 mwcr; + u32 ser; + u32 baudr; + u32 txfltr; + u32 rxfltr; + u32 txflr; + u32 rxflr; + u32 sr; + u32 imr; + u32 isr; + u32 risr; + u32 txoicr; + u32 rxoicr; + u32 rxuicr; + u32 msticr; + u32 icr; + u32 dmacr; + u32 dmatdlr; + u32 dmardlr; + u32 idr; + u32 version; + + /* Currently operates as 32 bits, though only the low 16 bits matter */ + u32 dr; +} __packed; + +#define dw_readl(dw, name) __raw_readl(&(dw)->name) +#define dw_writel(dw, name, val) __raw_writel((val), &(dw)->name) + +/* Default use SPI0 register for mrst, we will detect Penwell and use SPI1 */ +static unsigned long mrst_spi_paddr = MRST_REGBASE_SPI0; + +static u32 *pclk_spi0; +/* Always contains an accessable address, start with 0 */ +static struct dw_spi_reg *pspi; + +static struct kmsg_dumper dw_dumper; +static int dumper_registered; + +static void dw_kmsg_dump(struct kmsg_dumper *dumper, + enum kmsg_dump_reason reason, + const char *s1, unsigned long l1, + const char *s2, unsigned long l2) +{ + int i; + + /* When run to this, we'd better re-init the HW */ + mrst_early_console_init(); + + for (i = 0; i < l1; i++) + early_mrst_console.write(&early_mrst_console, s1 + i, 1); + for (i = 0; i < l2; i++) + early_mrst_console.write(&early_mrst_console, s2 + i, 1); +} + +/* Set the ratio rate to 115200, 8n1, IRQ disabled */ +static void max3110_write_config(void) +{ + u16 config; + + config = 0xc001; + dw_writel(pspi, dr, config); +} + +/* Translate char to a eligible word and send to max3110 */ +static void max3110_write_data(char c) +{ + u16 data; + + data = 0x8000 | c; + dw_writel(pspi, dr, data); +} + +void mrst_early_console_init(void) +{ + u32 ctrlr0 = 0; + u32 spi0_cdiv; + u32 freq; /* Freqency info only need be searched once */ + + /* Base clk is 100 MHz, the actual clk = 100M / (clk_divider + 1) */ + pclk_spi0 = (void *)set_fixmap_offset_nocache(FIX_EARLYCON_MEM_BASE, + MRST_CLK_SPI0_REG); + spi0_cdiv = ((*pclk_spi0) & 0xe00) >> 9; + freq = 100000000 / (spi0_cdiv + 1); + + if (mrst_identify_cpu() == MRST_CPU_CHIP_PENWELL) + mrst_spi_paddr = MRST_REGBASE_SPI1; + + pspi = (void *)set_fixmap_offset_nocache(FIX_EARLYCON_MEM_BASE, + mrst_spi_paddr); + + /* Disable SPI controller */ + dw_writel(pspi, ssienr, 0); + + /* Set control param, 8 bits, transmit only mode */ + ctrlr0 = dw_readl(pspi, ctrl0); + + ctrlr0 &= 0xfcc0; + ctrlr0 |= 0xf | (SPI_FRF_SPI << SPI_FRF_OFFSET) + | (SPI_TMOD_TO << SPI_TMOD_OFFSET); + dw_writel(pspi, ctrl0, ctrlr0); + + /* + * Change the spi0 clk to comply with 115200 bps, use 100000 to + * calculate the clk dividor to make the clock a little slower + * than real baud rate. + */ + dw_writel(pspi, baudr, freq/100000); + + /* Disable all INT for early phase */ + dw_writel(pspi, imr, 0x0); + + /* Set the cs to spi-uart */ + dw_writel(pspi, ser, 0x2); + + /* Enable the HW, the last step for HW init */ + dw_writel(pspi, ssienr, 0x1); + + /* Set the default configuration */ + max3110_write_config(); + + /* Register the kmsg dumper */ + if (!dumper_registered) { + dw_dumper.dump = dw_kmsg_dump; + kmsg_dump_register(&dw_dumper); + dumper_registered = 1; + } +} + +/* Slave select should be called in the read/write function */ +static void early_mrst_spi_putc(char c) +{ + unsigned int timeout; + u32 sr; + + timeout = MRST_SPI_TIMEOUT; + /* Early putc needs to make sure the TX FIFO is not full */ + while (--timeout) { + sr = dw_readl(pspi, sr); + if (!(sr & SR_TF_NOT_FULL)) + cpu_relax(); + else + break; + } + + if (!timeout) + pr_warning("MRST earlycon: timed out\n"); + else + max3110_write_data(c); +} + +/* Early SPI only uses polling mode */ +static void early_mrst_spi_write(struct console *con, const char *str, unsigned n) +{ + int i; + + for (i = 0; i < n && *str; i++) { + if (*str == '\n') + early_mrst_spi_putc('\r'); + early_mrst_spi_putc(*str); + str++; + } +} + +struct console early_mrst_console = { + .name = "earlymrst", + .write = early_mrst_spi_write, + .flags = CON_PRINTBUFFER, + .index = -1, +}; + +/* + * Following is the early console based on Medfield HSU (High + * Speed UART) device. + */ +#define HSU_PORT2_PADDR 0xffa28180 + +static void __iomem *phsu; + +void hsu_early_console_init(void) +{ + u8 lcr; + + phsu = (void *)set_fixmap_offset_nocache(FIX_EARLYCON_MEM_BASE, + HSU_PORT2_PADDR); + + /* Disable FIFO */ + writeb(0x0, phsu + UART_FCR); + + /* Set to default 115200 bps, 8n1 */ + lcr = readb(phsu + UART_LCR); + writeb((0x80 | lcr), phsu + UART_LCR); + writeb(0x18, phsu + UART_DLL); + writeb(lcr, phsu + UART_LCR); + writel(0x3600, phsu + UART_MUL*4); + + writeb(0x8, phsu + UART_MCR); + writeb(0x7, phsu + UART_FCR); + writeb(0x3, phsu + UART_LCR); + + /* Clear IRQ status */ + readb(phsu + UART_LSR); + readb(phsu + UART_RX); + readb(phsu + UART_IIR); + readb(phsu + UART_MSR); + + /* Enable FIFO */ + writeb(0x7, phsu + UART_FCR); +} + +#define BOTH_EMPTY (UART_LSR_TEMT | UART_LSR_THRE) + +static void early_hsu_putc(char ch) +{ + unsigned int timeout = 10000; /* 10ms */ + u8 status; + + while (--timeout) { + status = readb(phsu + UART_LSR); + if (status & BOTH_EMPTY) + break; + udelay(1); + } + + /* Only write the char when there was no timeout */ + if (timeout) + writeb(ch, phsu + UART_TX); +} + +static void early_hsu_write(struct console *con, const char *str, unsigned n) +{ + int i; + + for (i = 0; i < n && *str; i++) { + if (*str == '\n') + early_hsu_putc('\r'); + early_hsu_putc(*str); + str++; + } +} + +struct console early_hsu_console = { + .name = "earlyhsu", + .write = early_hsu_write, + .flags = CON_PRINTBUFFER, + .index = -1, +}; diff --git a/arch/x86/kernel/entry_32.S b/arch/x86/kernel/entry_32.S index 227d00920d2f..9fb188d7bc76 100644 --- a/arch/x86/kernel/entry_32.S +++ b/arch/x86/kernel/entry_32.S @@ -115,8 +115,7 @@ /* unfortunately push/pop can't be no-op */ .macro PUSH_GS - pushl $0 - CFI_ADJUST_CFA_OFFSET 4 + pushl_cfi $0 .endm .macro POP_GS pop=0 addl $(4 + \pop), %esp @@ -140,14 +139,12 @@ #else /* CONFIG_X86_32_LAZY_GS */ .macro PUSH_GS - pushl %gs - CFI_ADJUST_CFA_OFFSET 4 + pushl_cfi %gs /*CFI_REL_OFFSET gs, 0*/ .endm .macro POP_GS pop=0 -98: popl %gs - CFI_ADJUST_CFA_OFFSET -4 +98: popl_cfi %gs /*CFI_RESTORE gs*/ .if \pop <> 0 add $\pop, %esp @@ -195,35 +192,25 @@ .macro SAVE_ALL cld PUSH_GS - pushl %fs - CFI_ADJUST_CFA_OFFSET 4 + pushl_cfi %fs /*CFI_REL_OFFSET fs, 0;*/ - pushl %es - CFI_ADJUST_CFA_OFFSET 4 + pushl_cfi %es /*CFI_REL_OFFSET es, 0;*/ - pushl %ds - CFI_ADJUST_CFA_OFFSET 4 + pushl_cfi %ds /*CFI_REL_OFFSET ds, 0;*/ - pushl %eax - CFI_ADJUST_CFA_OFFSET 4 + pushl_cfi %eax CFI_REL_OFFSET eax, 0 - pushl %ebp - CFI_ADJUST_CFA_OFFSET 4 + pushl_cfi %ebp CFI_REL_OFFSET ebp, 0 - pushl %edi - CFI_ADJUST_CFA_OFFSET 4 + pushl_cfi %edi CFI_REL_OFFSET edi, 0 - pushl %esi - CFI_ADJUST_CFA_OFFSET 4 + pushl_cfi %esi CFI_REL_OFFSET esi, 0 - pushl %edx - CFI_ADJUST_CFA_OFFSET 4 + pushl_cfi %edx CFI_REL_OFFSET edx, 0 - pushl %ecx - CFI_ADJUST_CFA_OFFSET 4 + pushl_cfi %ecx CFI_REL_OFFSET ecx, 0 - pushl %ebx - CFI_ADJUST_CFA_OFFSET 4 + pushl_cfi %ebx CFI_REL_OFFSET ebx, 0 movl $(__USER_DS), %edx movl %edx, %ds @@ -234,39 +221,29 @@ .endm .macro RESTORE_INT_REGS - popl %ebx - CFI_ADJUST_CFA_OFFSET -4 + popl_cfi %ebx CFI_RESTORE ebx - popl %ecx - CFI_ADJUST_CFA_OFFSET -4 + popl_cfi %ecx CFI_RESTORE ecx - popl %edx - CFI_ADJUST_CFA_OFFSET -4 + popl_cfi %edx CFI_RESTORE edx - popl %esi - CFI_ADJUST_CFA_OFFSET -4 + popl_cfi %esi CFI_RESTORE esi - popl %edi - CFI_ADJUST_CFA_OFFSET -4 + popl_cfi %edi CFI_RESTORE edi - popl %ebp - CFI_ADJUST_CFA_OFFSET -4 + popl_cfi %ebp CFI_RESTORE ebp - popl %eax - CFI_ADJUST_CFA_OFFSET -4 + popl_cfi %eax CFI_RESTORE eax .endm .macro RESTORE_REGS pop=0 RESTORE_INT_REGS -1: popl %ds - CFI_ADJUST_CFA_OFFSET -4 +1: popl_cfi %ds /*CFI_RESTORE ds;*/ -2: popl %es - CFI_ADJUST_CFA_OFFSET -4 +2: popl_cfi %es /*CFI_RESTORE es;*/ -3: popl %fs - CFI_ADJUST_CFA_OFFSET -4 +3: popl_cfi %fs /*CFI_RESTORE fs;*/ POP_GS \pop .pushsection .fixup, "ax" @@ -320,16 +297,12 @@ ENTRY(ret_from_fork) CFI_STARTPROC - pushl %eax - CFI_ADJUST_CFA_OFFSET 4 + pushl_cfi %eax call schedule_tail GET_THREAD_INFO(%ebp) - popl %eax - CFI_ADJUST_CFA_OFFSET -4 - pushl $0x0202 # Reset kernel eflags - CFI_ADJUST_CFA_OFFSET 4 - popfl - CFI_ADJUST_CFA_OFFSET -4 + popl_cfi %eax + pushl_cfi $0x0202 # Reset kernel eflags + popfl_cfi jmp syscall_exit CFI_ENDPROC END(ret_from_fork) @@ -409,29 +382,23 @@ sysenter_past_esp: * enough kernel state to call TRACE_IRQS_OFF can be called - but * we immediately enable interrupts at that point anyway. */ - pushl $(__USER_DS) - CFI_ADJUST_CFA_OFFSET 4 + pushl_cfi $(__USER_DS) /*CFI_REL_OFFSET ss, 0*/ - pushl %ebp - CFI_ADJUST_CFA_OFFSET 4 + pushl_cfi %ebp CFI_REL_OFFSET esp, 0 - pushfl + pushfl_cfi orl $X86_EFLAGS_IF, (%esp) - CFI_ADJUST_CFA_OFFSET 4 - pushl $(__USER_CS) - CFI_ADJUST_CFA_OFFSET 4 + pushl_cfi $(__USER_CS) /*CFI_REL_OFFSET cs, 0*/ /* * Push current_thread_info()->sysenter_return to the stack. * A tiny bit of offset fixup is necessary - 4*4 means the 4 words * pushed above; +8 corresponds to copy_thread's esp0 setting. */ - pushl (TI_sysenter_return-THREAD_SIZE+8+4*4)(%esp) - CFI_ADJUST_CFA_OFFSET 4 + pushl_cfi (TI_sysenter_return-THREAD_SIZE+8+4*4)(%esp) CFI_REL_OFFSET eip, 0 - pushl %eax - CFI_ADJUST_CFA_OFFSET 4 + pushl_cfi %eax SAVE_ALL ENABLE_INTERRUPTS(CLBR_NONE) @@ -486,8 +453,7 @@ sysenter_audit: movl %eax,%edx /* 2nd arg: syscall number */ movl $AUDIT_ARCH_I386,%eax /* 1st arg: audit arch */ call audit_syscall_entry - pushl %ebx - CFI_ADJUST_CFA_OFFSET 4 + pushl_cfi %ebx movl PT_EAX(%esp),%eax /* reload syscall number */ jmp sysenter_do_call @@ -529,8 +495,7 @@ ENDPROC(ia32_sysenter_target) # system call handler stub ENTRY(system_call) RING0_INT_FRAME # can't unwind into user space anyway - pushl %eax # save orig_eax - CFI_ADJUST_CFA_OFFSET 4 + pushl_cfi %eax # save orig_eax SAVE_ALL GET_THREAD_INFO(%ebp) # system call tracing in operation / emulation @@ -566,7 +531,6 @@ restore_all_notrace: je ldt_ss # returning to user-space with LDT SS restore_nocheck: RESTORE_REGS 4 # skip orig_eax/error_code - CFI_ADJUST_CFA_OFFSET -4 irq_return: INTERRUPT_RETURN .section .fixup,"ax" @@ -619,10 +583,8 @@ ldt_ss: shr $16, %edx mov %dl, GDT_ESPFIX_SS + 4 /* bits 16..23 */ mov %dh, GDT_ESPFIX_SS + 7 /* bits 24..31 */ - pushl $__ESPFIX_SS - CFI_ADJUST_CFA_OFFSET 4 - push %eax /* new kernel esp */ - CFI_ADJUST_CFA_OFFSET 4 + pushl_cfi $__ESPFIX_SS + pushl_cfi %eax /* new kernel esp */ /* Disable interrupts, but do not irqtrace this section: we * will soon execute iret and the tracer was already set to * the irqstate after the iret */ @@ -666,11 +628,9 @@ work_notifysig: # deal with pending signals and ALIGN work_notifysig_v86: - pushl %ecx # save ti_flags for do_notify_resume - CFI_ADJUST_CFA_OFFSET 4 + pushl_cfi %ecx # save ti_flags for do_notify_resume call save_v86_state # %eax contains pt_regs pointer - popl %ecx - CFI_ADJUST_CFA_OFFSET -4 + popl_cfi %ecx movl %eax, %esp #else movl %esp, %eax @@ -750,14 +710,18 @@ ptregs_##name: \ #define PTREGSCALL3(name) \ ALIGN; \ ptregs_##name: \ + CFI_STARTPROC; \ leal 4(%esp),%eax; \ - pushl %eax; \ + pushl_cfi %eax; \ movl PT_EDX(%eax),%ecx; \ movl PT_ECX(%eax),%edx; \ movl PT_EBX(%eax),%eax; \ call sys_##name; \ addl $4,%esp; \ - ret + CFI_ADJUST_CFA_OFFSET -4; \ + ret; \ + CFI_ENDPROC; \ +ENDPROC(ptregs_##name) PTREGSCALL1(iopl) PTREGSCALL0(fork) @@ -772,15 +736,19 @@ PTREGSCALL1(vm86old) /* Clone is an oddball. The 4th arg is in %edi */ ALIGN; ptregs_clone: + CFI_STARTPROC leal 4(%esp),%eax - pushl %eax - pushl PT_EDI(%eax) + pushl_cfi %eax + pushl_cfi PT_EDI(%eax) movl PT_EDX(%eax),%ecx movl PT_ECX(%eax),%edx movl PT_EBX(%eax),%eax call sys_clone addl $8,%esp + CFI_ADJUST_CFA_OFFSET -8 ret + CFI_ENDPROC +ENDPROC(ptregs_clone) .macro FIXUP_ESPFIX_STACK /* @@ -795,10 +763,8 @@ ptregs_clone: mov GDT_ESPFIX_SS + 7, %ah /* bits 24..31 */ shl $16, %eax addl %esp, %eax /* the adjusted stack pointer */ - pushl $__KERNEL_DS - CFI_ADJUST_CFA_OFFSET 4 - pushl %eax - CFI_ADJUST_CFA_OFFSET 4 + pushl_cfi $__KERNEL_DS + pushl_cfi %eax lss (%esp), %esp /* switch to the normal stack segment */ CFI_ADJUST_CFA_OFFSET -8 .endm @@ -835,8 +801,7 @@ vector=FIRST_EXTERNAL_VECTOR .if vector <> FIRST_EXTERNAL_VECTOR CFI_ADJUST_CFA_OFFSET -4 .endif -1: pushl $(~vector+0x80) /* Note: always in signed byte range */ - CFI_ADJUST_CFA_OFFSET 4 +1: pushl_cfi $(~vector+0x80) /* Note: always in signed byte range */ .if ((vector-FIRST_EXTERNAL_VECTOR)%7) <> 6 jmp 2f .endif @@ -876,8 +841,7 @@ ENDPROC(common_interrupt) #define BUILD_INTERRUPT3(name, nr, fn) \ ENTRY(name) \ RING0_INT_FRAME; \ - pushl $~(nr); \ - CFI_ADJUST_CFA_OFFSET 4; \ + pushl_cfi $~(nr); \ SAVE_ALL; \ TRACE_IRQS_OFF \ movl %esp,%eax; \ @@ -893,21 +857,18 @@ ENDPROC(name) ENTRY(coprocessor_error) RING0_INT_FRAME - pushl $0 - CFI_ADJUST_CFA_OFFSET 4 - pushl $do_coprocessor_error - CFI_ADJUST_CFA_OFFSET 4 + pushl_cfi $0 + pushl_cfi $do_coprocessor_error jmp error_code CFI_ENDPROC END(coprocessor_error) ENTRY(simd_coprocessor_error) RING0_INT_FRAME - pushl $0 - CFI_ADJUST_CFA_OFFSET 4 + pushl_cfi $0 #ifdef CONFIG_X86_INVD_BUG /* AMD 486 bug: invd from userspace calls exception 19 instead of #GP */ -661: pushl $do_general_protection +661: pushl_cfi $do_general_protection 662: .section .altinstructions,"a" .balign 4 @@ -922,19 +883,16 @@ ENTRY(simd_coprocessor_error) 664: .previous #else - pushl $do_simd_coprocessor_error + pushl_cfi $do_simd_coprocessor_error #endif - CFI_ADJUST_CFA_OFFSET 4 jmp error_code CFI_ENDPROC END(simd_coprocessor_error) ENTRY(device_not_available) RING0_INT_FRAME - pushl $-1 # mark this as an int - CFI_ADJUST_CFA_OFFSET 4 - pushl $do_device_not_available - CFI_ADJUST_CFA_OFFSET 4 + pushl_cfi $-1 # mark this as an int + pushl_cfi $do_device_not_available jmp error_code CFI_ENDPROC END(device_not_available) @@ -956,82 +914,68 @@ END(native_irq_enable_sysexit) ENTRY(overflow) RING0_INT_FRAME - pushl $0 - CFI_ADJUST_CFA_OFFSET 4 - pushl $do_overflow - CFI_ADJUST_CFA_OFFSET 4 + pushl_cfi $0 + pushl_cfi $do_overflow jmp error_code CFI_ENDPROC END(overflow) ENTRY(bounds) RING0_INT_FRAME - pushl $0 - CFI_ADJUST_CFA_OFFSET 4 - pushl $do_bounds - CFI_ADJUST_CFA_OFFSET 4 + pushl_cfi $0 + pushl_cfi $do_bounds jmp error_code CFI_ENDPROC END(bounds) ENTRY(invalid_op) RING0_INT_FRAME - pushl $0 - CFI_ADJUST_CFA_OFFSET 4 - pushl $do_invalid_op - CFI_ADJUST_CFA_OFFSET 4 + pushl_cfi $0 + pushl_cfi $do_invalid_op jmp error_code CFI_ENDPROC END(invalid_op) ENTRY(coprocessor_segment_overrun) RING0_INT_FRAME - pushl $0 - CFI_ADJUST_CFA_OFFSET 4 - pushl $do_coprocessor_segment_overrun - CFI_ADJUST_CFA_OFFSET 4 + pushl_cfi $0 + pushl_cfi $do_coprocessor_segment_overrun jmp error_code CFI_ENDPROC END(coprocessor_segment_overrun) ENTRY(invalid_TSS) RING0_EC_FRAME - pushl $do_invalid_TSS - CFI_ADJUST_CFA_OFFSET 4 + pushl_cfi $do_invalid_TSS jmp error_code CFI_ENDPROC END(invalid_TSS) ENTRY(segment_not_present) RING0_EC_FRAME - pushl $do_segment_not_present - CFI_ADJUST_CFA_OFFSET 4 + pushl_cfi $do_segment_not_present jmp error_code CFI_ENDPROC END(segment_not_present) ENTRY(stack_segment) RING0_EC_FRAME - pushl $do_stack_segment - CFI_ADJUST_CFA_OFFSET 4 + pushl_cfi $do_stack_segment jmp error_code CFI_ENDPROC END(stack_segment) ENTRY(alignment_check) RING0_EC_FRAME - pushl $do_alignment_check - CFI_ADJUST_CFA_OFFSET 4 + pushl_cfi $do_alignment_check jmp error_code CFI_ENDPROC END(alignment_check) ENTRY(divide_error) RING0_INT_FRAME - pushl $0 # no error code - CFI_ADJUST_CFA_OFFSET 4 - pushl $do_divide_error - CFI_ADJUST_CFA_OFFSET 4 + pushl_cfi $0 # no error code + pushl_cfi $do_divide_error jmp error_code CFI_ENDPROC END(divide_error) @@ -1039,10 +983,8 @@ END(divide_error) #ifdef CONFIG_X86_MCE ENTRY(machine_check) RING0_INT_FRAME - pushl $0 - CFI_ADJUST_CFA_OFFSET 4 - pushl machine_check_vector - CFI_ADJUST_CFA_OFFSET 4 + pushl_cfi $0 + pushl_cfi machine_check_vector jmp error_code CFI_ENDPROC END(machine_check) @@ -1050,10 +992,8 @@ END(machine_check) ENTRY(spurious_interrupt_bug) RING0_INT_FRAME - pushl $0 - CFI_ADJUST_CFA_OFFSET 4 - pushl $do_spurious_interrupt_bug - CFI_ADJUST_CFA_OFFSET 4 + pushl_cfi $0 + pushl_cfi $do_spurious_interrupt_bug jmp error_code CFI_ENDPROC END(spurious_interrupt_bug) @@ -1084,8 +1024,7 @@ ENTRY(xen_sysenter_target) ENTRY(xen_hypervisor_callback) CFI_STARTPROC - pushl $0 - CFI_ADJUST_CFA_OFFSET 4 + pushl_cfi $0 SAVE_ALL TRACE_IRQS_OFF @@ -1121,23 +1060,20 @@ ENDPROC(xen_hypervisor_callback) # We distinguish between categories by maintaining a status value in EAX. ENTRY(xen_failsafe_callback) CFI_STARTPROC - pushl %eax - CFI_ADJUST_CFA_OFFSET 4 + pushl_cfi %eax movl $1,%eax 1: mov 4(%esp),%ds 2: mov 8(%esp),%es 3: mov 12(%esp),%fs 4: mov 16(%esp),%gs testl %eax,%eax - popl %eax - CFI_ADJUST_CFA_OFFSET -4 + popl_cfi %eax lea 16(%esp),%esp CFI_ADJUST_CFA_OFFSET -16 jz 5f addl $16,%esp jmp iret_exc # EAX != 0 => Category 2 (Bad IRET) -5: pushl $0 # EAX == 0 => Category 1 (Bad segment) - CFI_ADJUST_CFA_OFFSET 4 +5: pushl_cfi $0 # EAX == 0 => Category 1 (Bad segment) SAVE_ALL jmp ret_from_exception CFI_ENDPROC @@ -1287,40 +1223,29 @@ syscall_table_size=(.-sys_call_table) ENTRY(page_fault) RING0_EC_FRAME - pushl $do_page_fault - CFI_ADJUST_CFA_OFFSET 4 + pushl_cfi $do_page_fault ALIGN error_code: /* the function address is in %gs's slot on the stack */ - pushl %fs - CFI_ADJUST_CFA_OFFSET 4 + pushl_cfi %fs /*CFI_REL_OFFSET fs, 0*/ - pushl %es - CFI_ADJUST_CFA_OFFSET 4 + pushl_cfi %es /*CFI_REL_OFFSET es, 0*/ - pushl %ds - CFI_ADJUST_CFA_OFFSET 4 + pushl_cfi %ds /*CFI_REL_OFFSET ds, 0*/ - pushl %eax - CFI_ADJUST_CFA_OFFSET 4 + pushl_cfi %eax CFI_REL_OFFSET eax, 0 - pushl %ebp - CFI_ADJUST_CFA_OFFSET 4 + pushl_cfi %ebp CFI_REL_OFFSET ebp, 0 - pushl %edi - CFI_ADJUST_CFA_OFFSET 4 + pushl_cfi %edi CFI_REL_OFFSET edi, 0 - pushl %esi - CFI_ADJUST_CFA_OFFSET 4 + pushl_cfi %esi CFI_REL_OFFSET esi, 0 - pushl %edx - CFI_ADJUST_CFA_OFFSET 4 + pushl_cfi %edx CFI_REL_OFFSET edx, 0 - pushl %ecx - CFI_ADJUST_CFA_OFFSET 4 + pushl_cfi %ecx CFI_REL_OFFSET ecx, 0 - pushl %ebx - CFI_ADJUST_CFA_OFFSET 4 + pushl_cfi %ebx CFI_REL_OFFSET ebx, 0 cld movl $(__KERNEL_PERCPU), %ecx @@ -1362,12 +1287,9 @@ END(page_fault) movl TSS_sysenter_sp0 + \offset(%esp), %esp CFI_DEF_CFA esp, 0 CFI_UNDEFINED eip - pushfl - CFI_ADJUST_CFA_OFFSET 4 - pushl $__KERNEL_CS - CFI_ADJUST_CFA_OFFSET 4 - pushl $sysenter_past_esp - CFI_ADJUST_CFA_OFFSET 4 + pushfl_cfi + pushl_cfi $__KERNEL_CS + pushl_cfi $sysenter_past_esp CFI_REL_OFFSET eip, 0 .endm @@ -1377,8 +1299,7 @@ ENTRY(debug) jne debug_stack_correct FIX_STACK 12, debug_stack_correct, debug_esp_fix_insn debug_stack_correct: - pushl $-1 # mark this as an int - CFI_ADJUST_CFA_OFFSET 4 + pushl_cfi $-1 # mark this as an int SAVE_ALL TRACE_IRQS_OFF xorl %edx,%edx # error code 0 @@ -1398,32 +1319,27 @@ END(debug) */ ENTRY(nmi) RING0_INT_FRAME - pushl %eax - CFI_ADJUST_CFA_OFFSET 4 + pushl_cfi %eax movl %ss, %eax cmpw $__ESPFIX_SS, %ax - popl %eax - CFI_ADJUST_CFA_OFFSET -4 + popl_cfi %eax je nmi_espfix_stack cmpl $ia32_sysenter_target,(%esp) je nmi_stack_fixup - pushl %eax - CFI_ADJUST_CFA_OFFSET 4 + pushl_cfi %eax movl %esp,%eax /* Do not access memory above the end of our stack page, * it might not exist. */ andl $(THREAD_SIZE-1),%eax cmpl $(THREAD_SIZE-20),%eax - popl %eax - CFI_ADJUST_CFA_OFFSET -4 + popl_cfi %eax jae nmi_stack_correct cmpl $ia32_sysenter_target,12(%esp) je nmi_debug_stack_check nmi_stack_correct: /* We have a RING0_INT_FRAME here */ - pushl %eax - CFI_ADJUST_CFA_OFFSET 4 + pushl_cfi %eax SAVE_ALL xorl %edx,%edx # zero error code movl %esp,%eax # pt_regs pointer @@ -1452,18 +1368,14 @@ nmi_espfix_stack: * * create the pointer to lss back */ - pushl %ss - CFI_ADJUST_CFA_OFFSET 4 - pushl %esp - CFI_ADJUST_CFA_OFFSET 4 + pushl_cfi %ss + pushl_cfi %esp addl $4, (%esp) /* copy the iret frame of 12 bytes */ .rept 3 - pushl 16(%esp) - CFI_ADJUST_CFA_OFFSET 4 + pushl_cfi 16(%esp) .endr - pushl %eax - CFI_ADJUST_CFA_OFFSET 4 + pushl_cfi %eax SAVE_ALL FIXUP_ESPFIX_STACK # %eax == %esp xorl %edx,%edx # zero error code @@ -1477,8 +1389,7 @@ END(nmi) ENTRY(int3) RING0_INT_FRAME - pushl $-1 # mark this as an int - CFI_ADJUST_CFA_OFFSET 4 + pushl_cfi $-1 # mark this as an int SAVE_ALL TRACE_IRQS_OFF xorl %edx,%edx # zero error code @@ -1490,8 +1401,7 @@ END(int3) ENTRY(general_protection) RING0_EC_FRAME - pushl $do_general_protection - CFI_ADJUST_CFA_OFFSET 4 + pushl_cfi $do_general_protection jmp error_code CFI_ENDPROC END(general_protection) diff --git a/arch/x86/kernel/entry_64.S b/arch/x86/kernel/entry_64.S index 17be5ec7cbba..a7ae7fd1010f 100644 --- a/arch/x86/kernel/entry_64.S +++ b/arch/x86/kernel/entry_64.S @@ -213,23 +213,17 @@ ENDPROC(native_usergs_sysret64) .macro FAKE_STACK_FRAME child_rip /* push in order ss, rsp, eflags, cs, rip */ xorl %eax, %eax - pushq $__KERNEL_DS /* ss */ - CFI_ADJUST_CFA_OFFSET 8 + pushq_cfi $__KERNEL_DS /* ss */ /*CFI_REL_OFFSET ss,0*/ - pushq %rax /* rsp */ - CFI_ADJUST_CFA_OFFSET 8 + pushq_cfi %rax /* rsp */ CFI_REL_OFFSET rsp,0 - pushq $X86_EFLAGS_IF /* eflags - interrupts on */ - CFI_ADJUST_CFA_OFFSET 8 + pushq_cfi $X86_EFLAGS_IF /* eflags - interrupts on */ /*CFI_REL_OFFSET rflags,0*/ - pushq $__KERNEL_CS /* cs */ - CFI_ADJUST_CFA_OFFSET 8 + pushq_cfi $__KERNEL_CS /* cs */ /*CFI_REL_OFFSET cs,0*/ - pushq \child_rip /* rip */ - CFI_ADJUST_CFA_OFFSET 8 + pushq_cfi \child_rip /* rip */ CFI_REL_OFFSET rip,0 - pushq %rax /* orig rax */ - CFI_ADJUST_CFA_OFFSET 8 + pushq_cfi %rax /* orig rax */ .endm .macro UNFAKE_STACK_FRAME @@ -398,10 +392,8 @@ ENTRY(ret_from_fork) LOCK ; btr $TIF_FORK,TI_flags(%r8) - push kernel_eflags(%rip) - CFI_ADJUST_CFA_OFFSET 8 - popf # reset kernel eflags - CFI_ADJUST_CFA_OFFSET -8 + pushq_cfi kernel_eflags(%rip) + popfq_cfi # reset kernel eflags call schedule_tail # rdi: 'prev' task parameter @@ -521,11 +513,9 @@ sysret_careful: jnc sysret_signal TRACE_IRQS_ON ENABLE_INTERRUPTS(CLBR_NONE) - pushq %rdi - CFI_ADJUST_CFA_OFFSET 8 + pushq_cfi %rdi call schedule - popq %rdi - CFI_ADJUST_CFA_OFFSET -8 + popq_cfi %rdi jmp sysret_check /* Handle a signal */ @@ -634,11 +624,9 @@ int_careful: jnc int_very_careful TRACE_IRQS_ON ENABLE_INTERRUPTS(CLBR_NONE) - pushq %rdi - CFI_ADJUST_CFA_OFFSET 8 + pushq_cfi %rdi call schedule - popq %rdi - CFI_ADJUST_CFA_OFFSET -8 + popq_cfi %rdi DISABLE_INTERRUPTS(CLBR_NONE) TRACE_IRQS_OFF jmp int_with_check @@ -652,12 +640,10 @@ int_check_syscall_exit_work: /* Check for syscall exit trace */ testl $_TIF_WORK_SYSCALL_EXIT,%edx jz int_signal - pushq %rdi - CFI_ADJUST_CFA_OFFSET 8 + pushq_cfi %rdi leaq 8(%rsp),%rdi # &ptregs -> arg1 call syscall_trace_leave - popq %rdi - CFI_ADJUST_CFA_OFFSET -8 + popq_cfi %rdi andl $~(_TIF_WORK_SYSCALL_EXIT|_TIF_SYSCALL_EMU),%edi jmp int_restore_rest @@ -714,9 +700,8 @@ END(ptregscall_common) ENTRY(stub_execve) CFI_STARTPROC - popq %r11 - CFI_ADJUST_CFA_OFFSET -8 - CFI_REGISTER rip, r11 + addq $8, %rsp + PARTIAL_FRAME 0 SAVE_REST FIXUP_TOP_OF_STACK %r11 movq %rsp, %rcx @@ -735,7 +720,7 @@ END(stub_execve) ENTRY(stub_rt_sigreturn) CFI_STARTPROC addq $8, %rsp - CFI_ADJUST_CFA_OFFSET -8 + PARTIAL_FRAME 0 SAVE_REST movq %rsp,%rdi FIXUP_TOP_OF_STACK %r11 @@ -766,8 +751,7 @@ vector=FIRST_EXTERNAL_VECTOR .if vector <> FIRST_EXTERNAL_VECTOR CFI_ADJUST_CFA_OFFSET -8 .endif -1: pushq $(~vector+0x80) /* Note: always in signed byte range */ - CFI_ADJUST_CFA_OFFSET 8 +1: pushq_cfi $(~vector+0x80) /* Note: always in signed byte range */ .if ((vector-FIRST_EXTERNAL_VECTOR)%7) <> 6 jmp 2f .endif @@ -796,8 +780,8 @@ END(interrupt) /* 0(%rsp): ~(interrupt number) */ .macro interrupt func - subq $10*8, %rsp - CFI_ADJUST_CFA_OFFSET 10*8 + subq $ORIG_RAX-ARGOFFSET+8, %rsp + CFI_ADJUST_CFA_OFFSET ORIG_RAX-ARGOFFSET+8 call save_args PARTIAL_FRAME 0 call \func @@ -822,6 +806,7 @@ ret_from_intr: TRACE_IRQS_OFF decl PER_CPU_VAR(irq_count) leaveq + CFI_RESTORE rbp CFI_DEF_CFA_REGISTER rsp CFI_ADJUST_CFA_OFFSET -8 exit_intr: @@ -903,11 +888,9 @@ retint_careful: jnc retint_signal TRACE_IRQS_ON ENABLE_INTERRUPTS(CLBR_NONE) - pushq %rdi - CFI_ADJUST_CFA_OFFSET 8 + pushq_cfi %rdi call schedule - popq %rdi - CFI_ADJUST_CFA_OFFSET -8 + popq_cfi %rdi GET_THREAD_INFO(%rcx) DISABLE_INTERRUPTS(CLBR_NONE) TRACE_IRQS_OFF @@ -956,8 +939,7 @@ END(common_interrupt) .macro apicinterrupt num sym do_sym ENTRY(\sym) INTR_FRAME - pushq $~(\num) - CFI_ADJUST_CFA_OFFSET 8 + pushq_cfi $~(\num) interrupt \do_sym jmp ret_from_intr CFI_ENDPROC @@ -1023,9 +1005,9 @@ apicinterrupt ERROR_APIC_VECTOR \ apicinterrupt SPURIOUS_APIC_VECTOR \ spurious_interrupt smp_spurious_interrupt -#ifdef CONFIG_PERF_EVENTS -apicinterrupt LOCAL_PENDING_VECTOR \ - perf_pending_interrupt smp_perf_pending_interrupt +#ifdef CONFIG_IRQ_WORK +apicinterrupt IRQ_WORK_VECTOR \ + irq_work_interrupt smp_irq_work_interrupt #endif /* @@ -1036,8 +1018,8 @@ ENTRY(\sym) INTR_FRAME PARAVIRT_ADJUST_EXCEPTION_FRAME pushq_cfi $-1 /* ORIG_RAX: no syscall to restart */ - subq $15*8,%rsp - CFI_ADJUST_CFA_OFFSET 15*8 + subq $ORIG_RAX-R15, %rsp + CFI_ADJUST_CFA_OFFSET ORIG_RAX-R15 call error_entry DEFAULT_FRAME 0 movq %rsp,%rdi /* pt_regs pointer */ @@ -1052,9 +1034,9 @@ END(\sym) ENTRY(\sym) INTR_FRAME PARAVIRT_ADJUST_EXCEPTION_FRAME - pushq $-1 /* ORIG_RAX: no syscall to restart */ - CFI_ADJUST_CFA_OFFSET 8 - subq $15*8, %rsp + pushq_cfi $-1 /* ORIG_RAX: no syscall to restart */ + subq $ORIG_RAX-R15, %rsp + CFI_ADJUST_CFA_OFFSET ORIG_RAX-R15 call save_paranoid TRACE_IRQS_OFF movq %rsp,%rdi /* pt_regs pointer */ @@ -1070,9 +1052,9 @@ END(\sym) ENTRY(\sym) INTR_FRAME PARAVIRT_ADJUST_EXCEPTION_FRAME - pushq $-1 /* ORIG_RAX: no syscall to restart */ - CFI_ADJUST_CFA_OFFSET 8 - subq $15*8, %rsp + pushq_cfi $-1 /* ORIG_RAX: no syscall to restart */ + subq $ORIG_RAX-R15, %rsp + CFI_ADJUST_CFA_OFFSET ORIG_RAX-R15 call save_paranoid TRACE_IRQS_OFF movq %rsp,%rdi /* pt_regs pointer */ @@ -1089,8 +1071,8 @@ END(\sym) ENTRY(\sym) XCPT_FRAME PARAVIRT_ADJUST_EXCEPTION_FRAME - subq $15*8,%rsp - CFI_ADJUST_CFA_OFFSET 15*8 + subq $ORIG_RAX-R15, %rsp + CFI_ADJUST_CFA_OFFSET ORIG_RAX-R15 call error_entry DEFAULT_FRAME 0 movq %rsp,%rdi /* pt_regs pointer */ @@ -1107,8 +1089,8 @@ END(\sym) ENTRY(\sym) XCPT_FRAME PARAVIRT_ADJUST_EXCEPTION_FRAME - subq $15*8,%rsp - CFI_ADJUST_CFA_OFFSET 15*8 + subq $ORIG_RAX-R15, %rsp + CFI_ADJUST_CFA_OFFSET ORIG_RAX-R15 call save_paranoid DEFAULT_FRAME 0 TRACE_IRQS_OFF @@ -1139,16 +1121,14 @@ zeroentry simd_coprocessor_error do_simd_coprocessor_error /* edi: new selector */ ENTRY(native_load_gs_index) CFI_STARTPROC - pushf - CFI_ADJUST_CFA_OFFSET 8 + pushfq_cfi DISABLE_INTERRUPTS(CLBR_ANY & ~CLBR_RDI) SWAPGS gs_change: movl %edi,%gs 2: mfence /* workaround */ SWAPGS - popf - CFI_ADJUST_CFA_OFFSET -8 + popfq_cfi ret CFI_ENDPROC END(native_load_gs_index) @@ -1215,8 +1195,7 @@ END(kernel_execve) /* Call softirq on interrupt stack. Interrupts are off. */ ENTRY(call_softirq) CFI_STARTPROC - push %rbp - CFI_ADJUST_CFA_OFFSET 8 + pushq_cfi %rbp CFI_REL_OFFSET rbp,0 mov %rsp,%rbp CFI_DEF_CFA_REGISTER rbp @@ -1225,6 +1204,7 @@ ENTRY(call_softirq) push %rbp # backlink for old unwinder call __do_softirq leaveq + CFI_RESTORE rbp CFI_DEF_CFA_REGISTER rsp CFI_ADJUST_CFA_OFFSET -8 decl PER_CPU_VAR(irq_count) @@ -1368,7 +1348,7 @@ paranoidzeroentry machine_check *machine_check_vector(%rip) /* ebx: no swapgs flag */ ENTRY(paranoid_exit) - INTR_FRAME + DEFAULT_FRAME DISABLE_INTERRUPTS(CLBR_NONE) TRACE_IRQS_OFF testl %ebx,%ebx /* swapgs needed? */ @@ -1445,7 +1425,6 @@ error_swapgs: error_sti: TRACE_IRQS_OFF ret - CFI_ENDPROC /* * There are two places in the kernel that can potentially fault with @@ -1470,6 +1449,7 @@ bstep_iret: /* Fix truncated RIP */ movq %rcx,RIP+8(%rsp) jmp error_swapgs + CFI_ENDPROC END(error_entry) @@ -1498,8 +1478,8 @@ ENTRY(nmi) INTR_FRAME PARAVIRT_ADJUST_EXCEPTION_FRAME pushq_cfi $-1 - subq $15*8, %rsp - CFI_ADJUST_CFA_OFFSET 15*8 + subq $ORIG_RAX-R15, %rsp + CFI_ADJUST_CFA_OFFSET ORIG_RAX-R15 call save_paranoid DEFAULT_FRAME 0 /* paranoidentry do_nmi, 0; without TRACE_IRQS_OFF */ diff --git a/arch/x86/kernel/ftrace.c b/arch/x86/kernel/ftrace.c index cd37469b54ee..3afb33f14d2d 100644 --- a/arch/x86/kernel/ftrace.c +++ b/arch/x86/kernel/ftrace.c @@ -257,14 +257,9 @@ do_ftrace_mod_code(unsigned long ip, void *new_code) return mod_code_status; } - - - -static unsigned char ftrace_nop[MCOUNT_INSN_SIZE]; - static unsigned char *ftrace_nop_replace(void) { - return ftrace_nop; + return ideal_nop5; } static int @@ -338,62 +333,6 @@ int ftrace_update_ftrace_func(ftrace_func_t func) int __init ftrace_dyn_arch_init(void *data) { - extern const unsigned char ftrace_test_p6nop[]; - extern const unsigned char ftrace_test_nop5[]; - extern const unsigned char ftrace_test_jmp[]; - int faulted = 0; - - /* - * There is no good nop for all x86 archs. - * We will default to using the P6_NOP5, but first we - * will test to make sure that the nop will actually - * work on this CPU. If it faults, we will then - * go to a lesser efficient 5 byte nop. If that fails - * we then just use a jmp as our nop. This isn't the most - * efficient nop, but we can not use a multi part nop - * since we would then risk being preempted in the middle - * of that nop, and if we enabled tracing then, it might - * cause a system crash. - * - * TODO: check the cpuid to determine the best nop. - */ - asm volatile ( - "ftrace_test_jmp:" - "jmp ftrace_test_p6nop\n" - "nop\n" - "nop\n" - "nop\n" /* 2 byte jmp + 3 bytes */ - "ftrace_test_p6nop:" - P6_NOP5 - "jmp 1f\n" - "ftrace_test_nop5:" - ".byte 0x66,0x66,0x66,0x66,0x90\n" - "1:" - ".section .fixup, \"ax\"\n" - "2: movl $1, %0\n" - " jmp ftrace_test_nop5\n" - "3: movl $2, %0\n" - " jmp 1b\n" - ".previous\n" - _ASM_EXTABLE(ftrace_test_p6nop, 2b) - _ASM_EXTABLE(ftrace_test_nop5, 3b) - : "=r"(faulted) : "0" (faulted)); - - switch (faulted) { - case 0: - pr_info("converting mcount calls to 0f 1f 44 00 00\n"); - memcpy(ftrace_nop, ftrace_test_p6nop, MCOUNT_INSN_SIZE); - break; - case 1: - pr_info("converting mcount calls to 66 66 66 66 90\n"); - memcpy(ftrace_nop, ftrace_test_nop5, MCOUNT_INSN_SIZE); - break; - case 2: - pr_info("converting mcount calls to jmp . + 5\n"); - memcpy(ftrace_nop, ftrace_test_jmp, MCOUNT_INSN_SIZE); - break; - } - /* The return code is retured via data */ *(unsigned long *)data = 0; diff --git a/arch/x86/kernel/hpet.c b/arch/x86/kernel/hpet.c index 7494999141b3..efaf906daf93 100644 --- a/arch/x86/kernel/hpet.c +++ b/arch/x86/kernel/hpet.c @@ -440,9 +440,9 @@ static int hpet_legacy_next_event(unsigned long delta, static DEFINE_PER_CPU(struct hpet_dev *, cpu_hpet_dev); static struct hpet_dev *hpet_devs; -void hpet_msi_unmask(unsigned int irq) +void hpet_msi_unmask(struct irq_data *data) { - struct hpet_dev *hdev = get_irq_data(irq); + struct hpet_dev *hdev = data->handler_data; unsigned int cfg; /* unmask it */ @@ -451,10 +451,10 @@ void hpet_msi_unmask(unsigned int irq) hpet_writel(cfg, HPET_Tn_CFG(hdev->num)); } -void hpet_msi_mask(unsigned int irq) +void hpet_msi_mask(struct irq_data *data) { + struct hpet_dev *hdev = data->handler_data; unsigned int cfg; - struct hpet_dev *hdev = get_irq_data(irq); /* mask it */ cfg = hpet_readl(HPET_Tn_CFG(hdev->num)); @@ -462,18 +462,14 @@ void hpet_msi_mask(unsigned int irq) hpet_writel(cfg, HPET_Tn_CFG(hdev->num)); } -void hpet_msi_write(unsigned int irq, struct msi_msg *msg) +void hpet_msi_write(struct hpet_dev *hdev, struct msi_msg *msg) { - struct hpet_dev *hdev = get_irq_data(irq); - hpet_writel(msg->data, HPET_Tn_ROUTE(hdev->num)); hpet_writel(msg->address_lo, HPET_Tn_ROUTE(hdev->num) + 4); } -void hpet_msi_read(unsigned int irq, struct msi_msg *msg) +void hpet_msi_read(struct hpet_dev *hdev, struct msi_msg *msg) { - struct hpet_dev *hdev = get_irq_data(irq); - msg->data = hpet_readl(HPET_Tn_ROUTE(hdev->num)); msg->address_lo = hpet_readl(HPET_Tn_ROUTE(hdev->num) + 4); msg->address_hi = 0; diff --git a/arch/x86/kernel/i387.c b/arch/x86/kernel/i387.c index a46cb3522c0c..58bb239a2fd7 100644 --- a/arch/x86/kernel/i387.c +++ b/arch/x86/kernel/i387.c @@ -68,19 +68,22 @@ static void __cpuinit init_thread_xstate(void) */ if (!HAVE_HWFP) { + /* + * Disable xsave as we do not support it if i387 + * emulation is enabled. + */ + setup_clear_cpu_cap(X86_FEATURE_XSAVE); + setup_clear_cpu_cap(X86_FEATURE_XSAVEOPT); xstate_size = sizeof(struct i387_soft_struct); return; } if (cpu_has_fxsr) xstate_size = sizeof(struct i387_fxsave_struct); -#ifdef CONFIG_X86_32 else xstate_size = sizeof(struct i387_fsave_struct); -#endif } -#ifdef CONFIG_X86_64 /* * Called at bootup to set up the initial FPU state that is later cloned * into all processes. @@ -88,12 +91,21 @@ static void __cpuinit init_thread_xstate(void) void __cpuinit fpu_init(void) { - unsigned long oldcr0 = read_cr0(); - - set_in_cr4(X86_CR4_OSFXSR); - set_in_cr4(X86_CR4_OSXMMEXCPT); + unsigned long cr0; + unsigned long cr4_mask = 0; - write_cr0(oldcr0 & ~(X86_CR0_TS|X86_CR0_EM)); /* clear TS and EM */ + if (cpu_has_fxsr) + cr4_mask |= X86_CR4_OSFXSR; + if (cpu_has_xmm) + cr4_mask |= X86_CR4_OSXMMEXCPT; + if (cr4_mask) + set_in_cr4(cr4_mask); + + cr0 = read_cr0(); + cr0 &= ~(X86_CR0_TS|X86_CR0_EM); /* clear TS and EM */ + if (!HAVE_HWFP) + cr0 |= X86_CR0_EM; + write_cr0(cr0); if (!smp_processor_id()) init_thread_xstate(); @@ -104,24 +116,12 @@ void __cpuinit fpu_init(void) clear_used_math(); } -#else /* CONFIG_X86_64 */ - -void __cpuinit fpu_init(void) -{ - if (!smp_processor_id()) - init_thread_xstate(); -} - -#endif /* CONFIG_X86_32 */ - void fpu_finit(struct fpu *fpu) { -#ifdef CONFIG_X86_32 if (!HAVE_HWFP) { finit_soft_fpu(&fpu->state->soft); return; } -#endif if (cpu_has_fxsr) { struct i387_fxsave_struct *fx = &fpu->state->fxsave; @@ -386,19 +386,17 @@ convert_from_fxsr(struct user_i387_ia32_struct *env, struct task_struct *tsk) #ifdef CONFIG_X86_64 env->fip = fxsave->rip; env->foo = fxsave->rdp; + /* + * should be actually ds/cs at fpu exception time, but + * that information is not available in 64bit mode. + */ + env->fcs = task_pt_regs(tsk)->cs; if (tsk == current) { - /* - * should be actually ds/cs at fpu exception time, but - * that information is not available in 64bit mode. - */ - asm("mov %%ds, %[fos]" : [fos] "=r" (env->fos)); - asm("mov %%cs, %[fcs]" : [fcs] "=r" (env->fcs)); + savesegment(ds, env->fos); } else { - struct pt_regs *regs = task_pt_regs(tsk); - - env->fos = 0xffff0000 | tsk->thread.ds; - env->fcs = regs->cs; + env->fos = tsk->thread.ds; } + env->fos |= 0xffff0000; #else env->fip = fxsave->fip; env->fcs = (u16) fxsave->fcs | ((u32) fxsave->fop << 16); diff --git a/arch/x86/kernel/i8259.c b/arch/x86/kernel/i8259.c index cafa7c80ac95..20757cb2efa3 100644 --- a/arch/x86/kernel/i8259.c +++ b/arch/x86/kernel/i8259.c @@ -29,24 +29,10 @@ * plus some generic x86 specific things if generic specifics makes * any sense at all. */ +static void init_8259A(int auto_eoi); static int i8259A_auto_eoi; DEFINE_RAW_SPINLOCK(i8259A_lock); -static void mask_and_ack_8259A(unsigned int); -static void mask_8259A(void); -static void unmask_8259A(void); -static void disable_8259A_irq(unsigned int irq); -static void enable_8259A_irq(unsigned int irq); -static void init_8259A(int auto_eoi); -static int i8259A_irq_pending(unsigned int irq); - -struct irq_chip i8259A_chip = { - .name = "XT-PIC", - .mask = disable_8259A_irq, - .disable = disable_8259A_irq, - .unmask = enable_8259A_irq, - .mask_ack = mask_and_ack_8259A, -}; /* * 8259A PIC functions to handle ISA devices: @@ -68,7 +54,7 @@ unsigned int cached_irq_mask = 0xffff; */ unsigned long io_apic_irqs; -static void disable_8259A_irq(unsigned int irq) +static void mask_8259A_irq(unsigned int irq) { unsigned int mask = 1 << irq; unsigned long flags; @@ -82,7 +68,12 @@ static void disable_8259A_irq(unsigned int irq) raw_spin_unlock_irqrestore(&i8259A_lock, flags); } -static void enable_8259A_irq(unsigned int irq) +static void disable_8259A_irq(struct irq_data *data) +{ + mask_8259A_irq(data->irq); +} + +static void unmask_8259A_irq(unsigned int irq) { unsigned int mask = ~(1 << irq); unsigned long flags; @@ -96,6 +87,11 @@ static void enable_8259A_irq(unsigned int irq) raw_spin_unlock_irqrestore(&i8259A_lock, flags); } +static void enable_8259A_irq(struct irq_data *data) +{ + unmask_8259A_irq(data->irq); +} + static int i8259A_irq_pending(unsigned int irq) { unsigned int mask = 1<<irq; @@ -117,7 +113,7 @@ static void make_8259A_irq(unsigned int irq) disable_irq_nosync(irq); io_apic_irqs &= ~(1<<irq); set_irq_chip_and_handler_name(irq, &i8259A_chip, handle_level_irq, - "XT"); + i8259A_chip.name); enable_irq(irq); } @@ -150,8 +146,9 @@ static inline int i8259A_irq_real(unsigned int irq) * first, _then_ send the EOI, and the order of EOI * to the two 8259s is important! */ -static void mask_and_ack_8259A(unsigned int irq) +static void mask_and_ack_8259A(struct irq_data *data) { + unsigned int irq = data->irq; unsigned int irqmask = 1 << irq; unsigned long flags; @@ -223,6 +220,14 @@ spurious_8259A_irq: } } +struct irq_chip i8259A_chip = { + .name = "XT-PIC", + .irq_mask = disable_8259A_irq, + .irq_disable = disable_8259A_irq, + .irq_unmask = enable_8259A_irq, + .irq_mask_ack = mask_and_ack_8259A, +}; + static char irq_trigger[2]; /** * ELCR registers (0x4d0, 0x4d1) control edge/level of IRQ @@ -342,9 +347,9 @@ static void init_8259A(int auto_eoi) * In AEOI mode we just have to mask the interrupt * when acking. */ - i8259A_chip.mask_ack = disable_8259A_irq; + i8259A_chip.irq_mask_ack = disable_8259A_irq; else - i8259A_chip.mask_ack = mask_and_ack_8259A; + i8259A_chip.irq_mask_ack = mask_and_ack_8259A; udelay(100); /* wait for 8259A to initialize */ @@ -363,14 +368,6 @@ static void init_8259A(int auto_eoi) static void legacy_pic_noop(void) { }; static void legacy_pic_uint_noop(unsigned int unused) { }; static void legacy_pic_int_noop(int unused) { }; - -static struct irq_chip dummy_pic_chip = { - .name = "dummy pic", - .mask = legacy_pic_uint_noop, - .unmask = legacy_pic_uint_noop, - .disable = legacy_pic_uint_noop, - .mask_ack = legacy_pic_uint_noop, -}; static int legacy_pic_irq_pending_noop(unsigned int irq) { return 0; @@ -378,7 +375,9 @@ static int legacy_pic_irq_pending_noop(unsigned int irq) struct legacy_pic null_legacy_pic = { .nr_legacy_irqs = 0, - .chip = &dummy_pic_chip, + .chip = &dummy_irq_chip, + .mask = legacy_pic_uint_noop, + .unmask = legacy_pic_uint_noop, .mask_all = legacy_pic_noop, .restore_mask = legacy_pic_noop, .init = legacy_pic_int_noop, @@ -389,7 +388,9 @@ struct legacy_pic null_legacy_pic = { struct legacy_pic default_legacy_pic = { .nr_legacy_irqs = NR_IRQS_LEGACY, .chip = &i8259A_chip, - .mask_all = mask_8259A, + .mask = mask_8259A_irq, + .unmask = unmask_8259A_irq, + .mask_all = mask_8259A, .restore_mask = unmask_8259A, .init = init_8259A, .irq_pending = i8259A_irq_pending, diff --git a/arch/x86/kernel/irq.c b/arch/x86/kernel/irq.c index 91fd0c70a18a..83ec0175f986 100644 --- a/arch/x86/kernel/irq.c +++ b/arch/x86/kernel/irq.c @@ -67,10 +67,10 @@ static int show_other_interrupts(struct seq_file *p, int prec) for_each_online_cpu(j) seq_printf(p, "%10u ", irq_stats(j)->apic_perf_irqs); seq_printf(p, " Performance monitoring interrupts\n"); - seq_printf(p, "%*s: ", prec, "PND"); + seq_printf(p, "%*s: ", prec, "IWI"); for_each_online_cpu(j) - seq_printf(p, "%10u ", irq_stats(j)->apic_pending_irqs); - seq_printf(p, " Performance pending work\n"); + seq_printf(p, "%10u ", irq_stats(j)->apic_irq_work_irqs); + seq_printf(p, " IRQ work interrupts\n"); #endif if (x86_platform_ipi_callback) { seq_printf(p, "%*s: ", prec, "PLT"); @@ -159,7 +159,7 @@ int show_interrupts(struct seq_file *p, void *v) seq_printf(p, "%*d: ", prec, i); for_each_online_cpu(j) seq_printf(p, "%10u ", kstat_irqs_cpu(i, j)); - seq_printf(p, " %8s", desc->chip->name); + seq_printf(p, " %8s", desc->irq_data.chip->name); seq_printf(p, "-%-8s", desc->name); if (action) { @@ -185,7 +185,7 @@ u64 arch_irq_stat_cpu(unsigned int cpu) sum += irq_stats(cpu)->apic_timer_irqs; sum += irq_stats(cpu)->irq_spurious_count; sum += irq_stats(cpu)->apic_perf_irqs; - sum += irq_stats(cpu)->apic_pending_irqs; + sum += irq_stats(cpu)->apic_irq_work_irqs; #endif if (x86_platform_ipi_callback) sum += irq_stats(cpu)->x86_platform_ipis; @@ -282,6 +282,7 @@ void fixup_irqs(void) unsigned int irq, vector; static int warned; struct irq_desc *desc; + struct irq_data *data; for_each_irq_desc(irq, desc) { int break_affinity = 0; @@ -296,7 +297,8 @@ void fixup_irqs(void) /* interrupt's are disabled at this point */ raw_spin_lock(&desc->lock); - affinity = desc->affinity; + data = &desc->irq_data; + affinity = data->affinity; if (!irq_has_action(irq) || cpumask_equal(affinity, cpu_online_mask)) { raw_spin_unlock(&desc->lock); @@ -315,16 +317,16 @@ void fixup_irqs(void) affinity = cpu_all_mask; } - if (!(desc->status & IRQ_MOVE_PCNTXT) && desc->chip->mask) - desc->chip->mask(irq); + if (!(desc->status & IRQ_MOVE_PCNTXT) && data->chip->irq_mask) + data->chip->irq_mask(data); - if (desc->chip->set_affinity) - desc->chip->set_affinity(irq, affinity); + if (data->chip->irq_set_affinity) + data->chip->irq_set_affinity(data, affinity, true); else if (!(warned++)) set_affinity = 0; - if (!(desc->status & IRQ_MOVE_PCNTXT) && desc->chip->unmask) - desc->chip->unmask(irq); + if (!(desc->status & IRQ_MOVE_PCNTXT) && data->chip->irq_unmask) + data->chip->irq_unmask(data); raw_spin_unlock(&desc->lock); @@ -355,10 +357,10 @@ void fixup_irqs(void) if (irr & (1 << (vector % 32))) { irq = __get_cpu_var(vector_irq)[vector]; - desc = irq_to_desc(irq); + data = irq_get_irq_data(irq); raw_spin_lock(&desc->lock); - if (desc->chip->retrigger) - desc->chip->retrigger(irq); + if (data->chip->irq_retrigger) + data->chip->irq_retrigger(data); raw_spin_unlock(&desc->lock); } } diff --git a/arch/x86/kernel/irq_work.c b/arch/x86/kernel/irq_work.c new file mode 100644 index 000000000000..ca8f703a1e70 --- /dev/null +++ b/arch/x86/kernel/irq_work.c @@ -0,0 +1,30 @@ +/* + * x86 specific code for irq_work + * + * Copyright (C) 2010 Red Hat, Inc., Peter Zijlstra <pzijlstr@redhat.com> + */ + +#include <linux/kernel.h> +#include <linux/irq_work.h> +#include <linux/hardirq.h> +#include <asm/apic.h> + +void smp_irq_work_interrupt(struct pt_regs *regs) +{ + irq_enter(); + ack_APIC_irq(); + inc_irq_stat(apic_irq_work_irqs); + irq_work_run(); + irq_exit(); +} + +void arch_irq_work_raise(void) +{ +#ifdef CONFIG_X86_LOCAL_APIC + if (!cpu_has_apic) + return; + + apic->send_IPI_self(IRQ_WORK_VECTOR); + apic_wait_icr_idle(); +#endif +} diff --git a/arch/x86/kernel/irqinit.c b/arch/x86/kernel/irqinit.c index 990ae7cfc578..c752e973958d 100644 --- a/arch/x86/kernel/irqinit.c +++ b/arch/x86/kernel/irqinit.c @@ -100,6 +100,8 @@ int vector_used_by_percpu_irq(unsigned int vector) void __init init_ISA_irqs(void) { + struct irq_chip *chip = legacy_pic->chip; + const char *name = chip->name; int i; #if defined(CONFIG_X86_64) || defined(CONFIG_X86_LOCAL_APIC) @@ -107,19 +109,8 @@ void __init init_ISA_irqs(void) #endif legacy_pic->init(0); - /* - * 16 old-style INTA-cycle interrupts: - */ - for (i = 0; i < legacy_pic->nr_legacy_irqs; i++) { - struct irq_desc *desc = irq_to_desc(i); - - desc->status = IRQ_DISABLED; - desc->action = NULL; - desc->depth = 1; - - set_irq_chip_and_handler_name(i, &i8259A_chip, - handle_level_irq, "XT"); - } + for (i = 0; i < legacy_pic->nr_legacy_irqs; i++) + set_irq_chip_and_handler_name(i, chip, handle_level_irq, name); } void __init init_IRQ(void) @@ -224,9 +215,9 @@ static void __init apic_intr_init(void) alloc_intr_gate(SPURIOUS_APIC_VECTOR, spurious_interrupt); alloc_intr_gate(ERROR_APIC_VECTOR, error_interrupt); - /* Performance monitoring interrupts: */ -# ifdef CONFIG_PERF_EVENTS - alloc_intr_gate(LOCAL_PENDING_VECTOR, perf_pending_interrupt); + /* IRQ work interrupts: */ +# ifdef CONFIG_IRQ_WORK + alloc_intr_gate(IRQ_WORK_VECTOR, irq_work_interrupt); # endif #endif diff --git a/arch/x86/kernel/jump_label.c b/arch/x86/kernel/jump_label.c new file mode 100644 index 000000000000..961b6b30ba90 --- /dev/null +++ b/arch/x86/kernel/jump_label.c @@ -0,0 +1,50 @@ +/* + * jump label x86 support + * + * Copyright (C) 2009 Jason Baron <jbaron@redhat.com> + * + */ +#include <linux/jump_label.h> +#include <linux/memory.h> +#include <linux/uaccess.h> +#include <linux/module.h> +#include <linux/list.h> +#include <linux/jhash.h> +#include <linux/cpu.h> +#include <asm/kprobes.h> +#include <asm/alternative.h> + +#ifdef HAVE_JUMP_LABEL + +union jump_code_union { + char code[JUMP_LABEL_NOP_SIZE]; + struct { + char jump; + int offset; + } __attribute__((packed)); +}; + +void arch_jump_label_transform(struct jump_entry *entry, + enum jump_label_type type) +{ + union jump_code_union code; + + if (type == JUMP_LABEL_ENABLE) { + code.jump = 0xe9; + code.offset = entry->target - + (entry->code + JUMP_LABEL_NOP_SIZE); + } else + memcpy(&code, ideal_nop5, JUMP_LABEL_NOP_SIZE); + get_online_cpus(); + mutex_lock(&text_mutex); + text_poke_smp((void *)entry->code, &code, JUMP_LABEL_NOP_SIZE); + mutex_unlock(&text_mutex); + put_online_cpus(); +} + +void arch_jump_label_text_poke_early(jump_label_t addr) +{ + text_poke_early((void *)addr, ideal_nop5, JUMP_LABEL_NOP_SIZE); +} + +#endif diff --git a/arch/x86/kernel/kprobes.c b/arch/x86/kernel/kprobes.c index 770ebfb349e9..1cbd54c0df99 100644 --- a/arch/x86/kernel/kprobes.c +++ b/arch/x86/kernel/kprobes.c @@ -230,9 +230,6 @@ static int recover_probed_instruction(kprobe_opcode_t *buf, unsigned long addr) return 0; } -/* Dummy buffers for kallsyms_lookup */ -static char __dummy_buf[KSYM_NAME_LEN]; - /* Check if paddr is at an instruction boundary */ static int __kprobes can_probe(unsigned long paddr) { @@ -241,7 +238,7 @@ static int __kprobes can_probe(unsigned long paddr) struct insn insn; kprobe_opcode_t buf[MAX_INSN_SIZE]; - if (!kallsyms_lookup(paddr, NULL, &offset, NULL, __dummy_buf)) + if (!kallsyms_lookup_size_offset(paddr, NULL, &offset)) return 0; /* Decode instructions */ @@ -1129,7 +1126,7 @@ static void __kprobes synthesize_set_arg1(kprobe_opcode_t *addr, *(unsigned long *)addr = val; } -void __kprobes kprobes_optinsn_template_holder(void) +static void __used __kprobes kprobes_optinsn_template_holder(void) { asm volatile ( ".global optprobe_template_entry\n" @@ -1221,7 +1218,8 @@ static int __kprobes copy_optimized_instructions(u8 *dest, u8 *src) } /* Check whether the address range is reserved */ if (ftrace_text_reserved(src, src + len - 1) || - alternatives_text_reserved(src, src + len - 1)) + alternatives_text_reserved(src, src + len - 1) || + jump_label_text_reserved(src, src + len - 1)) return -EBUSY; return len; @@ -1269,11 +1267,9 @@ static int __kprobes can_optimize(unsigned long paddr) unsigned long addr, size = 0, offset = 0; struct insn insn; kprobe_opcode_t buf[MAX_INSN_SIZE]; - /* Dummy buffers for lookup_symbol_attrs */ - static char __dummy_buf[KSYM_NAME_LEN]; /* Lookup symbol including addr */ - if (!kallsyms_lookup(paddr, &size, &offset, NULL, __dummy_buf)) + if (!kallsyms_lookup_size_offset(paddr, &size, &offset)) return 0; /* Check there is enough space for a relative jump. */ diff --git a/arch/x86/kernel/machine_kexec_64.c b/arch/x86/kernel/machine_kexec_64.c index 035c8c529181..b3ea9db39db6 100644 --- a/arch/x86/kernel/machine_kexec_64.c +++ b/arch/x86/kernel/machine_kexec_64.c @@ -36,7 +36,7 @@ static int init_one_level2_page(struct kimage *image, pgd_t *pgd, if (!page) goto out; pud = (pud_t *)page_address(page); - memset(pud, 0, PAGE_SIZE); + clear_page(pud); set_pgd(pgd, __pgd(__pa(pud) | _KERNPG_TABLE)); } pud = pud_offset(pgd, addr); @@ -45,7 +45,7 @@ static int init_one_level2_page(struct kimage *image, pgd_t *pgd, if (!page) goto out; pmd = (pmd_t *)page_address(page); - memset(pmd, 0, PAGE_SIZE); + clear_page(pmd); set_pud(pud, __pud(__pa(pmd) | _KERNPG_TABLE)); } pmd = pmd_offset(pud, addr); diff --git a/arch/x86/kernel/module.c b/arch/x86/kernel/module.c index 1c355c550960..8f2956091735 100644 --- a/arch/x86/kernel/module.c +++ b/arch/x86/kernel/module.c @@ -239,6 +239,9 @@ int module_finalize(const Elf_Ehdr *hdr, apply_paravirt(pseg, pseg + para->sh_size); } + /* make jump label nops */ + jump_label_apply_nops(me); + return 0; } diff --git a/arch/x86/kernel/olpc-xo1.c b/arch/x86/kernel/olpc-xo1.c new file mode 100644 index 000000000000..f5442c03abc3 --- /dev/null +++ b/arch/x86/kernel/olpc-xo1.c @@ -0,0 +1,140 @@ +/* + * Support for features of the OLPC XO-1 laptop + * + * Copyright (C) 2010 One Laptop per Child + * Copyright (C) 2006 Red Hat, Inc. + * Copyright (C) 2006 Advanced Micro Devices, Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + */ + +#include <linux/module.h> +#include <linux/pci.h> +#include <linux/pci_ids.h> +#include <linux/platform_device.h> +#include <linux/pm.h> + +#include <asm/io.h> +#include <asm/olpc.h> + +#define DRV_NAME "olpc-xo1" + +#define PMS_BAR 4 +#define ACPI_BAR 5 + +/* PMC registers (PMS block) */ +#define PM_SCLK 0x10 +#define PM_IN_SLPCTL 0x20 +#define PM_WKXD 0x34 +#define PM_WKD 0x30 +#define PM_SSC 0x54 + +/* PM registers (ACPI block) */ +#define PM1_CNT 0x08 +#define PM_GPE0_STS 0x18 + +static unsigned long acpi_base; +static unsigned long pms_base; + +static void xo1_power_off(void) +{ + printk(KERN_INFO "OLPC XO-1 power off sequence...\n"); + + /* Enable all of these controls with 0 delay */ + outl(0x40000000, pms_base + PM_SCLK); + outl(0x40000000, pms_base + PM_IN_SLPCTL); + outl(0x40000000, pms_base + PM_WKXD); + outl(0x40000000, pms_base + PM_WKD); + + /* Clear status bits (possibly unnecessary) */ + outl(0x0002ffff, pms_base + PM_SSC); + outl(0xffffffff, acpi_base + PM_GPE0_STS); + + /* Write SLP_EN bit to start the machinery */ + outl(0x00002000, acpi_base + PM1_CNT); +} + +/* Read the base addresses from the PCI BAR info */ +static int __devinit setup_bases(struct pci_dev *pdev) +{ + int r; + + r = pci_enable_device_io(pdev); + if (r) { + dev_err(&pdev->dev, "can't enable device IO\n"); + return r; + } + + r = pci_request_region(pdev, ACPI_BAR, DRV_NAME); + if (r) { + dev_err(&pdev->dev, "can't alloc PCI BAR #%d\n", ACPI_BAR); + return r; + } + + r = pci_request_region(pdev, PMS_BAR, DRV_NAME); + if (r) { + dev_err(&pdev->dev, "can't alloc PCI BAR #%d\n", PMS_BAR); + pci_release_region(pdev, ACPI_BAR); + return r; + } + + acpi_base = pci_resource_start(pdev, ACPI_BAR); + pms_base = pci_resource_start(pdev, PMS_BAR); + + return 0; +} + +static int __devinit olpc_xo1_probe(struct platform_device *pdev) +{ + struct pci_dev *pcidev; + int r; + + pcidev = pci_get_device(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_CS5536_ISA, + NULL); + if (!pdev) + return -ENODEV; + + r = setup_bases(pcidev); + if (r) + return r; + + pm_power_off = xo1_power_off; + + printk(KERN_INFO "OLPC XO-1 support registered\n"); + return 0; +} + +static int __devexit olpc_xo1_remove(struct platform_device *pdev) +{ + pm_power_off = NULL; + return 0; +} + +static struct platform_driver olpc_xo1_driver = { + .driver = { + .name = DRV_NAME, + .owner = THIS_MODULE, + }, + .probe = olpc_xo1_probe, + .remove = __devexit_p(olpc_xo1_remove), +}; + +static int __init olpc_xo1_init(void) +{ + return platform_driver_register(&olpc_xo1_driver); +} + +static void __exit olpc_xo1_exit(void) +{ + platform_driver_unregister(&olpc_xo1_driver); +} + +MODULE_AUTHOR("Daniel Drake <dsd@laptop.org>"); +MODULE_LICENSE("GPL"); +MODULE_ALIAS("platform:olpc-xo1"); + +module_init(olpc_xo1_init); +module_exit(olpc_xo1_exit); diff --git a/arch/x86/kernel/olpc.c b/arch/x86/kernel/olpc.c index 0e0cdde519be..edaf3fe8dc5e 100644 --- a/arch/x86/kernel/olpc.c +++ b/arch/x86/kernel/olpc.c @@ -17,6 +17,7 @@ #include <linux/spinlock.h> #include <linux/io.h> #include <linux/string.h> +#include <linux/platform_device.h> #include <asm/geode.h> #include <asm/setup.h> @@ -114,6 +115,7 @@ int olpc_ec_cmd(unsigned char cmd, unsigned char *inbuf, size_t inlen, unsigned long flags; int ret = -EIO; int i; + int restarts = 0; spin_lock_irqsave(&ec_lock, flags); @@ -169,7 +171,9 @@ restart: if (wait_on_obf(0x6c, 1)) { printk(KERN_ERR "olpc-ec: timeout waiting for" " EC to provide data!\n"); - goto restart; + if (restarts++ < 10) + goto restart; + goto err; } outbuf[i] = inb(0x68); pr_devel("olpc-ec: received 0x%x\n", outbuf[i]); @@ -183,8 +187,21 @@ err: } EXPORT_SYMBOL_GPL(olpc_ec_cmd); -#ifdef CONFIG_OLPC_OPENFIRMWARE -static void __init platform_detect(void) +static bool __init check_ofw_architecture(void) +{ + size_t propsize; + char olpc_arch[5]; + const void *args[] = { NULL, "architecture", olpc_arch, (void *)5 }; + void *res[] = { &propsize }; + + if (olpc_ofw("getprop", args, res)) { + printk(KERN_ERR "ofw: getprop call failed!\n"); + return false; + } + return propsize == 5 && strncmp("OLPC", olpc_arch, 5) == 0; +} + +static u32 __init get_board_revision(void) { size_t propsize; __be32 rev; @@ -193,45 +210,43 @@ static void __init platform_detect(void) if (olpc_ofw("getprop", args, res) || propsize != 4) { printk(KERN_ERR "ofw: getprop call failed!\n"); - rev = cpu_to_be32(0); + return cpu_to_be32(0); } - olpc_platform_info.boardrev = be32_to_cpu(rev); + return be32_to_cpu(rev); } -#else -static void __init platform_detect(void) + +static bool __init platform_detect(void) { - /* stopgap until OFW support is added to the kernel */ - olpc_platform_info.boardrev = olpc_board(0xc2); + if (!check_ofw_architecture()) + return false; + olpc_platform_info.flags |= OLPC_F_PRESENT; + olpc_platform_info.boardrev = get_board_revision(); + return true; } -#endif -static int __init olpc_init(void) +static int __init add_xo1_platform_devices(void) { - unsigned char *romsig; + struct platform_device *pdev; - /* The ioremap check is dangerous; limit what we run it on */ - if (!is_geode() || cs5535_has_vsa2()) - return 0; + pdev = platform_device_register_simple("xo1-rfkill", -1, NULL, 0); + if (IS_ERR(pdev)) + return PTR_ERR(pdev); - spin_lock_init(&ec_lock); + pdev = platform_device_register_simple("olpc-xo1", -1, NULL, 0); + if (IS_ERR(pdev)) + return PTR_ERR(pdev); - romsig = ioremap(0xffffffc0, 16); - if (!romsig) - return 0; + return 0; +} - if (strncmp(romsig, "CL1 Q", 7)) - goto unmap; - if (strncmp(romsig+6, romsig+13, 3)) { - printk(KERN_INFO "OLPC BIOS signature looks invalid. " - "Assuming not OLPC\n"); - goto unmap; - } +static int __init olpc_init(void) +{ + int r = 0; - printk(KERN_INFO "OLPC board with OpenFirmware %.16s\n", romsig); - olpc_platform_info.flags |= OLPC_F_PRESENT; + if (!olpc_ofw_present() || !platform_detect()) + return 0; - /* get the platform revision */ - platform_detect(); + spin_lock_init(&ec_lock); /* assume B1 and above models always have a DCON */ if (olpc_board_at_least(olpc_board(0xb1))) @@ -242,8 +257,10 @@ static int __init olpc_init(void) (unsigned char *) &olpc_platform_info.ecver, 1); #ifdef CONFIG_PCI_OLPC - /* If the VSA exists let it emulate PCI, if not emulate in kernel */ - if (!cs5535_has_vsa2()) + /* If the VSA exists let it emulate PCI, if not emulate in kernel. + * XO-1 only. */ + if (olpc_platform_info.boardrev < olpc_board_pre(0xd0) && + !cs5535_has_vsa2()) x86_init.pci.arch_init = pci_olpc_init; #endif @@ -252,8 +269,12 @@ static int __init olpc_init(void) olpc_platform_info.boardrev >> 4, olpc_platform_info.ecver); -unmap: - iounmap(romsig); + if (olpc_platform_info.boardrev < olpc_board_pre(0xd0)) { /* XO-1 */ + r = add_xo1_platform_devices(); + if (r) + return r; + } + return 0; } diff --git a/arch/x86/kernel/olpc_ofw.c b/arch/x86/kernel/olpc_ofw.c index 3218aa71ab5e..787320464379 100644 --- a/arch/x86/kernel/olpc_ofw.c +++ b/arch/x86/kernel/olpc_ofw.c @@ -74,6 +74,12 @@ int __olpc_ofw(const char *name, int nr_args, const void **args, int nr_res, } EXPORT_SYMBOL_GPL(__olpc_ofw); +bool olpc_ofw_present(void) +{ + return olpc_ofw_cif != NULL; +} +EXPORT_SYMBOL_GPL(olpc_ofw_present); + /* OFW cif _should_ be above this address */ #define OFW_MIN 0xff000000 diff --git a/arch/x86/kernel/paravirt.c b/arch/x86/kernel/paravirt.c index 1db183ed7c01..c5b250011fd4 100644 --- a/arch/x86/kernel/paravirt.c +++ b/arch/x86/kernel/paravirt.c @@ -413,7 +413,6 @@ struct pv_mmu_ops pv_mmu_ops = { .alloc_pte = paravirt_nop, .alloc_pmd = paravirt_nop, - .alloc_pmd_clone = paravirt_nop, .alloc_pud = paravirt_nop, .release_pte = paravirt_nop, .release_pmd = paravirt_nop, diff --git a/arch/x86/kernel/pci-calgary_64.c b/arch/x86/kernel/pci-calgary_64.c index 078d4ec1a9d9..f56a117cef68 100644 --- a/arch/x86/kernel/pci-calgary_64.c +++ b/arch/x86/kernel/pci-calgary_64.c @@ -47,6 +47,7 @@ #include <asm/rio.h> #include <asm/bios_ebda.h> #include <asm/x86_init.h> +#include <asm/iommu_table.h> #ifdef CONFIG_CALGARY_IOMMU_ENABLED_BY_DEFAULT int use_calgary __read_mostly = 1; @@ -1364,7 +1365,7 @@ static int __init calgary_iommu_init(void) return 0; } -void __init detect_calgary(void) +int __init detect_calgary(void) { int bus; void *tbl; @@ -1378,13 +1379,13 @@ void __init detect_calgary(void) * another HW IOMMU already, bail out. */ if (no_iommu || iommu_detected) - return; + return -ENODEV; if (!use_calgary) - return; + return -ENODEV; if (!early_pci_allowed()) - return; + return -ENODEV; printk(KERN_DEBUG "Calgary: detecting Calgary via BIOS EBDA area\n"); @@ -1410,13 +1411,13 @@ void __init detect_calgary(void) if (!rio_table_hdr) { printk(KERN_DEBUG "Calgary: Unable to locate Rio Grande table " "in EBDA - bailing!\n"); - return; + return -ENODEV; } ret = build_detail_arrays(); if (ret) { printk(KERN_DEBUG "Calgary: build_detail_arrays ret %d\n", ret); - return; + return -ENOMEM; } specified_table_size = determine_tce_table_size((is_kdump_kernel() ? @@ -1464,7 +1465,7 @@ void __init detect_calgary(void) x86_init.iommu.iommu_init = calgary_iommu_init; } - return; + return calgary_found; cleanup: for (--bus; bus >= 0; --bus) { @@ -1473,6 +1474,7 @@ cleanup: if (info->tce_space) free_tce_table(info->tce_space); } + return -ENOMEM; } static int __init calgary_parse_options(char *p) @@ -1594,3 +1596,5 @@ static int __init calgary_fixup_tce_spaces(void) * and before device_initcall. */ rootfs_initcall(calgary_fixup_tce_spaces); + +IOMMU_INIT_POST(detect_calgary); diff --git a/arch/x86/kernel/pci-dma.c b/arch/x86/kernel/pci-dma.c index 9f07cfcbd3a5..9ea999a4dcc1 100644 --- a/arch/x86/kernel/pci-dma.c +++ b/arch/x86/kernel/pci-dma.c @@ -11,9 +11,8 @@ #include <asm/iommu.h> #include <asm/gart.h> #include <asm/calgary.h> -#include <asm/amd_iommu.h> #include <asm/x86_init.h> -#include <asm/xen/swiotlb-xen.h> +#include <asm/iommu_table.h> static int forbid_dac __read_mostly; @@ -45,6 +44,8 @@ int iommu_detected __read_mostly = 0; */ int iommu_pass_through __read_mostly; +extern struct iommu_table_entry __iommu_table[], __iommu_table_end[]; + /* Dummy device used for NULL arguments (normally ISA). */ struct device x86_dma_fallback_dev = { .init_name = "fallback device", @@ -130,26 +131,24 @@ static void __init dma32_free_bootmem(void) void __init pci_iommu_alloc(void) { + struct iommu_table_entry *p; + /* free the range so iommu could get some range less than 4G */ dma32_free_bootmem(); - if (pci_xen_swiotlb_detect() || pci_swiotlb_detect()) - goto out; - - gart_iommu_hole_init(); - - detect_calgary(); - - detect_intel_iommu(); + sort_iommu_table(__iommu_table, __iommu_table_end); + check_iommu_entries(__iommu_table, __iommu_table_end); - /* needs to be called after gart_iommu_hole_init */ - amd_iommu_detect(); -out: - pci_xen_swiotlb_init(); - - pci_swiotlb_init(); + for (p = __iommu_table; p < __iommu_table_end; p++) { + if (p && p->detect && p->detect() > 0) { + p->flags |= IOMMU_DETECTED; + if (p->early_init) + p->early_init(); + if (p->flags & IOMMU_FINISH_IF_DETECTED) + break; + } + } } - void *dma_generic_alloc_coherent(struct device *dev, size_t size, dma_addr_t *dma_addr, gfp_t flag) { @@ -292,6 +291,7 @@ EXPORT_SYMBOL(dma_supported); static int __init pci_iommu_init(void) { + struct iommu_table_entry *p; dma_debug_init(PREALLOC_DMA_DEBUG_ENTRIES); #ifdef CONFIG_PCI @@ -299,12 +299,10 @@ static int __init pci_iommu_init(void) #endif x86_init.iommu.iommu_init(); - if (swiotlb || xen_swiotlb) { - printk(KERN_INFO "PCI-DMA: " - "Using software bounce buffering for IO (SWIOTLB)\n"); - swiotlb_print_info(); - } else - swiotlb_free(); + for (p = __iommu_table; p < __iommu_table_end; p++) { + if (p && (p->flags & IOMMU_DETECTED) && p->late_init) + p->late_init(); + } return 0; } diff --git a/arch/x86/kernel/pci-gart_64.c b/arch/x86/kernel/pci-gart_64.c index 0f7f130caa67..ba0f0ca9f280 100644 --- a/arch/x86/kernel/pci-gart_64.c +++ b/arch/x86/kernel/pci-gart_64.c @@ -39,8 +39,9 @@ #include <asm/cacheflush.h> #include <asm/swiotlb.h> #include <asm/dma.h> -#include <asm/k8.h> +#include <asm/amd_nb.h> #include <asm/x86_init.h> +#include <asm/iommu_table.h> static unsigned long iommu_bus_base; /* GART remapping area (physical) */ static unsigned long iommu_size; /* size of remapping area bytes */ @@ -560,8 +561,11 @@ static void enable_gart_translations(void) { int i; - for (i = 0; i < num_k8_northbridges; i++) { - struct pci_dev *dev = k8_northbridges[i]; + if (!k8_northbridges.gart_supported) + return; + + for (i = 0; i < k8_northbridges.num; i++) { + struct pci_dev *dev = k8_northbridges.nb_misc[i]; enable_gart_translation(dev, __pa(agp_gatt_table)); } @@ -592,16 +596,19 @@ static void gart_fixup_northbridges(struct sys_device *dev) if (!fix_up_north_bridges) return; + if (!k8_northbridges.gart_supported) + return; + pr_info("PCI-DMA: Restoring GART aperture settings\n"); - for (i = 0; i < num_k8_northbridges; i++) { - struct pci_dev *dev = k8_northbridges[i]; + for (i = 0; i < k8_northbridges.num; i++) { + struct pci_dev *dev = k8_northbridges.nb_misc[i]; /* * Don't enable translations just yet. That is the next * step. Restore the pre-suspend aperture settings. */ - pci_write_config_dword(dev, AMD64_GARTAPERTURECTL, aperture_order << 1); + gart_set_size_and_enable(dev, aperture_order); pci_write_config_dword(dev, AMD64_GARTAPERTUREBASE, aperture_alloc >> 25); } } @@ -649,8 +656,8 @@ static __init int init_k8_gatt(struct agp_kern_info *info) aper_size = aper_base = info->aper_size = 0; dev = NULL; - for (i = 0; i < num_k8_northbridges; i++) { - dev = k8_northbridges[i]; + for (i = 0; i < k8_northbridges.num; i++) { + dev = k8_northbridges.nb_misc[i]; new_aper_base = read_aperture(dev, &new_aper_size); if (!new_aper_base) goto nommu; @@ -718,10 +725,13 @@ static void gart_iommu_shutdown(void) if (!no_agp) return; - for (i = 0; i < num_k8_northbridges; i++) { + if (!k8_northbridges.gart_supported) + return; + + for (i = 0; i < k8_northbridges.num; i++) { u32 ctl; - dev = k8_northbridges[i]; + dev = k8_northbridges.nb_misc[i]; pci_read_config_dword(dev, AMD64_GARTAPERTURECTL, &ctl); ctl &= ~GARTEN; @@ -739,7 +749,7 @@ int __init gart_iommu_init(void) unsigned long scratch; long i; - if (num_k8_northbridges == 0) + if (!k8_northbridges.gart_supported) return 0; #ifndef CONFIG_AGP_AMD64 @@ -896,3 +906,4 @@ void __init gart_parse_options(char *p) } } } +IOMMU_INIT_POST(gart_iommu_hole_init); diff --git a/arch/x86/kernel/pci-iommu_table.c b/arch/x86/kernel/pci-iommu_table.c new file mode 100644 index 000000000000..55d745ec1181 --- /dev/null +++ b/arch/x86/kernel/pci-iommu_table.c @@ -0,0 +1,89 @@ +#include <linux/dma-mapping.h> +#include <asm/iommu_table.h> +#include <linux/string.h> +#include <linux/kallsyms.h> + + +#define DEBUG 1 + +static struct iommu_table_entry * __init +find_dependents_of(struct iommu_table_entry *start, + struct iommu_table_entry *finish, + struct iommu_table_entry *q) +{ + struct iommu_table_entry *p; + + if (!q) + return NULL; + + for (p = start; p < finish; p++) + if (p->detect == q->depend) + return p; + + return NULL; +} + + +void __init sort_iommu_table(struct iommu_table_entry *start, + struct iommu_table_entry *finish) { + + struct iommu_table_entry *p, *q, tmp; + + for (p = start; p < finish; p++) { +again: + q = find_dependents_of(start, finish, p); + /* We are bit sneaky here. We use the memory address to figure + * out if the node we depend on is past our point, if so, swap. + */ + if (q > p) { + tmp = *p; + memmove(p, q, sizeof(*p)); + *q = tmp; + goto again; + } + } + +} + +#ifdef DEBUG +void __init check_iommu_entries(struct iommu_table_entry *start, + struct iommu_table_entry *finish) +{ + struct iommu_table_entry *p, *q, *x; + char sym_p[KSYM_SYMBOL_LEN]; + char sym_q[KSYM_SYMBOL_LEN]; + + /* Simple cyclic dependency checker. */ + for (p = start; p < finish; p++) { + q = find_dependents_of(start, finish, p); + x = find_dependents_of(start, finish, q); + if (p == x) { + sprint_symbol(sym_p, (unsigned long)p->detect); + sprint_symbol(sym_q, (unsigned long)q->detect); + + printk(KERN_ERR "CYCLIC DEPENDENCY FOUND! %s depends" \ + " on %s and vice-versa. BREAKING IT.\n", + sym_p, sym_q); + /* Heavy handed way..*/ + x->depend = 0; + } + } + + for (p = start; p < finish; p++) { + q = find_dependents_of(p, finish, p); + if (q && q > p) { + sprint_symbol(sym_p, (unsigned long)p->detect); + sprint_symbol(sym_q, (unsigned long)q->detect); + + printk(KERN_ERR "EXECUTION ORDER INVALID! %s "\ + "should be called before %s!\n", + sym_p, sym_q); + } + } +} +#else +inline void check_iommu_entries(struct iommu_table_entry *start, + struct iommu_table_entry *finish) +{ +} +#endif diff --git a/arch/x86/kernel/pci-swiotlb.c b/arch/x86/kernel/pci-swiotlb.c index a5bc528d4328..8f972cbddef0 100644 --- a/arch/x86/kernel/pci-swiotlb.c +++ b/arch/x86/kernel/pci-swiotlb.c @@ -10,7 +10,8 @@ #include <asm/iommu.h> #include <asm/swiotlb.h> #include <asm/dma.h> - +#include <asm/xen/swiotlb-xen.h> +#include <asm/iommu_table.h> int swiotlb __read_mostly; static void *x86_swiotlb_alloc_coherent(struct device *hwdev, size_t size, @@ -41,25 +42,42 @@ static struct dma_map_ops swiotlb_dma_ops = { }; /* - * pci_swiotlb_detect - set swiotlb to 1 if necessary + * pci_swiotlb_detect_override - set swiotlb to 1 if necessary * * This returns non-zero if we are forced to use swiotlb (by the boot * option). */ -int __init pci_swiotlb_detect(void) +int __init pci_swiotlb_detect_override(void) { int use_swiotlb = swiotlb | swiotlb_force; + if (swiotlb_force) + swiotlb = 1; + + return use_swiotlb; +} +IOMMU_INIT_FINISH(pci_swiotlb_detect_override, + pci_xen_swiotlb_detect, + pci_swiotlb_init, + pci_swiotlb_late_init); + +/* + * if 4GB or more detected (and iommu=off not set) return 1 + * and set swiotlb to 1. + */ +int __init pci_swiotlb_detect_4gb(void) +{ /* don't initialize swiotlb if iommu=off (no_iommu=1) */ #ifdef CONFIG_X86_64 if (!no_iommu && max_pfn > MAX_DMA32_PFN) swiotlb = 1; #endif - if (swiotlb_force) - swiotlb = 1; - - return use_swiotlb; + return swiotlb; } +IOMMU_INIT(pci_swiotlb_detect_4gb, + pci_swiotlb_detect_override, + pci_swiotlb_init, + pci_swiotlb_late_init); void __init pci_swiotlb_init(void) { @@ -68,3 +86,15 @@ void __init pci_swiotlb_init(void) dma_ops = &swiotlb_dma_ops; } } + +void __init pci_swiotlb_late_init(void) +{ + /* An IOMMU turned us off. */ + if (!swiotlb) + swiotlb_free(); + else { + printk(KERN_INFO "PCI-DMA: " + "Using software bounce buffering for IO (SWIOTLB)\n"); + swiotlb_print_info(); + } +} diff --git a/arch/x86/kernel/pmtimer_64.c b/arch/x86/kernel/pmtimer_64.c deleted file mode 100644 index b112406f1996..000000000000 --- a/arch/x86/kernel/pmtimer_64.c +++ /dev/null @@ -1,69 +0,0 @@ -/* Ported over from i386 by AK, original copyright was: - * - * (C) Dominik Brodowski <linux@brodo.de> 2003 - * - * Driver to use the Power Management Timer (PMTMR) available in some - * southbridges as primary timing source for the Linux kernel. - * - * Based on parts of linux/drivers/acpi/hardware/hwtimer.c, timer_pit.c, - * timer_hpet.c, and on Arjan van de Ven's implementation for 2.4. - * - * This file is licensed under the GPL v2. - * - * Dropped all the hardware bug workarounds for now. Hopefully they - * are not needed on 64bit chipsets. - */ - -#include <linux/jiffies.h> -#include <linux/kernel.h> -#include <linux/time.h> -#include <linux/init.h> -#include <linux/cpumask.h> -#include <linux/acpi_pmtmr.h> - -#include <asm/io.h> -#include <asm/proto.h> -#include <asm/msr.h> -#include <asm/vsyscall.h> - -static inline u32 cyc2us(u32 cycles) -{ - /* The Power Management Timer ticks at 3.579545 ticks per microsecond. - * 1 / PM_TIMER_FREQUENCY == 0.27936511 =~ 286/1024 [error: 0.024%] - * - * Even with HZ = 100, delta is at maximum 35796 ticks, so it can - * easily be multiplied with 286 (=0x11E) without having to fear - * u32 overflows. - */ - cycles *= 286; - return (cycles >> 10); -} - -static unsigned pmtimer_wait_tick(void) -{ - u32 a, b; - for (a = b = inl(pmtmr_ioport) & ACPI_PM_MASK; - a == b; - b = inl(pmtmr_ioport) & ACPI_PM_MASK) - cpu_relax(); - return b; -} - -/* note: wait time is rounded up to one tick */ -void pmtimer_wait(unsigned us) -{ - u32 a, b; - a = pmtimer_wait_tick(); - do { - b = inl(pmtmr_ioport); - cpu_relax(); - } while (cyc2us(b - a) < us); -} - -static int __init nopmtimer_setup(char *s) -{ - pmtmr_ioport = 0; - return 1; -} - -__setup("nopmtimer", nopmtimer_setup); diff --git a/arch/x86/kernel/process_64.c b/arch/x86/kernel/process_64.c index 3d9ea531ddd1..b3d7a3a04f38 100644 --- a/arch/x86/kernel/process_64.c +++ b/arch/x86/kernel/process_64.c @@ -424,7 +424,7 @@ __switch_to(struct task_struct *prev_p, struct task_struct *next_p) load_TLS(next, cpu); /* Must be after DS reload */ - unlazy_fpu(prev_p); + __unlazy_fpu(prev_p); /* Make sure cpu is ready for new context */ if (preload_fpu) diff --git a/arch/x86/kernel/reboot.c b/arch/x86/kernel/reboot.c index e3af342fe83a..7a4cf14223ba 100644 --- a/arch/x86/kernel/reboot.c +++ b/arch/x86/kernel/reboot.c @@ -84,7 +84,7 @@ static int __init reboot_setup(char *str) } /* we will leave sorting out the final value when we are ready to reboot, since we might not - have set up boot_cpu_id or smp_num_cpu */ + have detected BSP APIC ID or smp_num_cpu */ break; #endif /* CONFIG_SMP */ diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c index c3a4fbb2b996..a59f6a6df5e2 100644 --- a/arch/x86/kernel/setup.c +++ b/arch/x86/kernel/setup.c @@ -83,7 +83,6 @@ #include <asm/dmi.h> #include <asm/io_apic.h> #include <asm/ist.h> -#include <asm/vmi.h> #include <asm/setup_arch.h> #include <asm/bios_ebda.h> #include <asm/cacheflush.h> @@ -107,11 +106,12 @@ #include <asm/percpu.h> #include <asm/topology.h> #include <asm/apicdef.h> -#include <asm/k8.h> +#include <asm/amd_nb.h> #ifdef CONFIG_X86_64 #include <asm/numa_64.h> #endif #include <asm/mce.h> +#include <asm/alternative.h> /* * end_pfn only includes RAM, while max_pfn_mapped includes all e820 entries. @@ -125,7 +125,6 @@ unsigned long max_pfn_mapped; RESERVE_BRK(dmi_alloc, 65536); #endif -unsigned int boot_cpu_id __read_mostly; static __initdata unsigned long _brk_start = (unsigned long)__brk_base; unsigned long _brk_end = (unsigned long)__brk_base; @@ -618,79 +617,7 @@ static __init void reserve_ibft_region(void) reserve_early_overlap_ok(addr, addr + size, "ibft"); } -#ifdef CONFIG_X86_RESERVE_LOW_64K -static int __init dmi_low_memory_corruption(const struct dmi_system_id *d) -{ - printk(KERN_NOTICE - "%s detected: BIOS may corrupt low RAM, working around it.\n", - d->ident); - - e820_update_range(0, 0x10000, E820_RAM, E820_RESERVED); - sanitize_e820_map(e820.map, ARRAY_SIZE(e820.map), &e820.nr_map); - - return 0; -} -#endif - -/* List of systems that have known low memory corruption BIOS problems */ -static struct dmi_system_id __initdata bad_bios_dmi_table[] = { -#ifdef CONFIG_X86_RESERVE_LOW_64K - { - .callback = dmi_low_memory_corruption, - .ident = "AMI BIOS", - .matches = { - DMI_MATCH(DMI_BIOS_VENDOR, "American Megatrends Inc."), - }, - }, - { - .callback = dmi_low_memory_corruption, - .ident = "Phoenix BIOS", - .matches = { - DMI_MATCH(DMI_BIOS_VENDOR, "Phoenix Technologies"), - }, - }, - { - .callback = dmi_low_memory_corruption, - .ident = "Phoenix/MSC BIOS", - .matches = { - DMI_MATCH(DMI_BIOS_VENDOR, "Phoenix/MSC"), - }, - }, - /* - * AMI BIOS with low memory corruption was found on Intel DG45ID and - * DG45FC boards. - * It has a different DMI_BIOS_VENDOR = "Intel Corp.", for now we will - * match only DMI_BOARD_NAME and see if there is more bad products - * with this vendor. - */ - { - .callback = dmi_low_memory_corruption, - .ident = "AMI BIOS", - .matches = { - DMI_MATCH(DMI_BOARD_NAME, "DG45ID"), - }, - }, - { - .callback = dmi_low_memory_corruption, - .ident = "AMI BIOS", - .matches = { - DMI_MATCH(DMI_BOARD_NAME, "DG45FC"), - }, - }, - /* - * The Dell Inspiron Mini 1012 has DMI_BIOS_VENDOR = "Dell Inc.", so - * match on the product name. - */ - { - .callback = dmi_low_memory_corruption, - .ident = "Phoenix BIOS", - .matches = { - DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1012"), - }, - }, -#endif - {} -}; +static unsigned reserve_low = CONFIG_X86_RESERVE_LOW << 10; static void __init trim_bios_range(void) { @@ -698,8 +625,14 @@ static void __init trim_bios_range(void) * A special case is the first 4Kb of memory; * This is a BIOS owned area, not kernel ram, but generally * not listed as such in the E820 table. + * + * This typically reserves additional memory (64KiB by default) + * since some BIOSes are known to corrupt low memory. See the + * Kconfig help text for X86_RESERVE_LOW. */ - e820_update_range(0, PAGE_SIZE, E820_RAM, E820_RESERVED); + e820_update_range(0, ALIGN(reserve_low, PAGE_SIZE), + E820_RAM, E820_RESERVED); + /* * special case: Some BIOSen report the PC BIOS * area (640->1Mb) as ram even though it is not. @@ -709,6 +642,28 @@ static void __init trim_bios_range(void) sanitize_e820_map(e820.map, ARRAY_SIZE(e820.map), &e820.nr_map); } +static int __init parse_reservelow(char *p) +{ + unsigned long long size; + + if (!p) + return -EINVAL; + + size = memparse(p, &p); + + if (size < 4096) + size = 4096; + + if (size > 640*1024) + size = 640*1024; + + reserve_low = size; + + return 0; +} + +early_param("reservelow", parse_reservelow); + /* * Determine if we were loaded by an EFI loader. If so, then we have also been * passed the efi memmap, systab, etc., so we should use these data structures @@ -726,6 +681,7 @@ void __init setup_arch(char **cmdline_p) { int acpi = 0; int k8 = 0; + unsigned long flags; #ifdef CONFIG_X86_32 memcpy(&boot_cpu_data, &new_cpu_data, sizeof(new_cpu_data)); @@ -734,10 +690,10 @@ void __init setup_arch(char **cmdline_p) printk(KERN_INFO "Command line: %s\n", boot_command_line); #endif - /* VMI may relocate the fixmap; do this before touching ioremap area */ - vmi_init(); - - /* OFW also may relocate the fixmap */ + /* + * If we have OLPC OFW, we might end up relocating the fixmap due to + * reserve_top(), so do this before touching the ioremap area. + */ olpc_ofw_detect(); early_trap_init(); @@ -838,9 +794,6 @@ void __init setup_arch(char **cmdline_p) x86_report_nx(); - /* Must be before kernel pagetables are setup */ - vmi_activate(); - /* after early param, so could get panic from serial */ reserve_early_setup_data(); @@ -863,8 +816,6 @@ void __init setup_arch(char **cmdline_p) dmi_scan_machine(); - dmi_check_system(bad_bios_dmi_table); - /* * VMware detection requires dmi to be available, so this * needs to be done after dmi_scan_machine, for the BP. @@ -1071,6 +1022,10 @@ void __init setup_arch(char **cmdline_p) x86_init.oem.banner(); mcheck_init(); + + local_irq_save(flags); + arch_init_ideal_nop5(); + local_irq_restore(flags); } #ifdef CONFIG_X86_32 diff --git a/arch/x86/kernel/setup_percpu.c b/arch/x86/kernel/setup_percpu.c index a60df9ae6454..2335c15c93a4 100644 --- a/arch/x86/kernel/setup_percpu.c +++ b/arch/x86/kernel/setup_percpu.c @@ -253,7 +253,7 @@ void __init setup_per_cpu_areas(void) * Up to this point, the boot CPU has been using .init.data * area. Reload any changed state for the boot CPU. */ - if (cpu == boot_cpu_id) + if (!cpu) switch_to_new_gdt(cpu); } diff --git a/arch/x86/kernel/sfi.c b/arch/x86/kernel/sfi.c index cb22acf3ed09..dd4c281ffe57 100644 --- a/arch/x86/kernel/sfi.c +++ b/arch/x86/kernel/sfi.c @@ -34,7 +34,7 @@ #ifdef CONFIG_X86_LOCAL_APIC static unsigned long sfi_lapic_addr __initdata = APIC_DEFAULT_PHYS_BASE; -void __init mp_sfi_register_lapic_address(unsigned long address) +static void __init mp_sfi_register_lapic_address(unsigned long address) { mp_lapic_addr = address; @@ -46,7 +46,7 @@ void __init mp_sfi_register_lapic_address(unsigned long address) } /* All CPUs enumerated by SFI must be present and enabled */ -void __cpuinit mp_sfi_register_lapic(u8 id) +static void __cpuinit mp_sfi_register_lapic(u8 id) { if (MAX_APICS - id <= 0) { pr_warning("Processor #%d invalid (max %d)\n", diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c index 8b3bfc4dd708..dfb50890b5b7 100644 --- a/arch/x86/kernel/smpboot.c +++ b/arch/x86/kernel/smpboot.c @@ -62,7 +62,7 @@ #include <asm/pgtable.h> #include <asm/tlbflush.h> #include <asm/mtrr.h> -#include <asm/vmi.h> +#include <asm/mwait.h> #include <asm/apic.h> #include <asm/setup.h> #include <asm/uv/uv.h> @@ -311,7 +311,6 @@ notrace static void __cpuinit start_secondary(void *unused) __flush_tlb_all(); #endif - vmi_bringup(); cpu_init(); preempt_disable(); smp_callin(); @@ -324,9 +323,9 @@ notrace static void __cpuinit start_secondary(void *unused) check_tsc_sync_target(); if (nmi_watchdog == NMI_IO_APIC) { - legacy_pic->chip->mask(0); + legacy_pic->mask(0); enable_NMI_through_LVT0(); - legacy_pic->chip->unmask(0); + legacy_pic->unmask(0); } /* This must be done before setting cpu_online_mask */ @@ -397,6 +396,19 @@ void __cpuinit smp_store_cpu_info(int id) identify_secondary_cpu(c); } +static void __cpuinit link_thread_siblings(int cpu1, int cpu2) +{ + struct cpuinfo_x86 *c1 = &cpu_data(cpu1); + struct cpuinfo_x86 *c2 = &cpu_data(cpu2); + + cpumask_set_cpu(cpu1, cpu_sibling_mask(cpu2)); + cpumask_set_cpu(cpu2, cpu_sibling_mask(cpu1)); + cpumask_set_cpu(cpu1, cpu_core_mask(cpu2)); + cpumask_set_cpu(cpu2, cpu_core_mask(cpu1)); + cpumask_set_cpu(cpu1, c2->llc_shared_map); + cpumask_set_cpu(cpu2, c1->llc_shared_map); +} + void __cpuinit set_cpu_sibling_map(int cpu) { @@ -409,14 +421,13 @@ void __cpuinit set_cpu_sibling_map(int cpu) for_each_cpu(i, cpu_sibling_setup_mask) { struct cpuinfo_x86 *o = &cpu_data(i); - if (c->phys_proc_id == o->phys_proc_id && - c->cpu_core_id == o->cpu_core_id) { - cpumask_set_cpu(i, cpu_sibling_mask(cpu)); - cpumask_set_cpu(cpu, cpu_sibling_mask(i)); - cpumask_set_cpu(i, cpu_core_mask(cpu)); - cpumask_set_cpu(cpu, cpu_core_mask(i)); - cpumask_set_cpu(i, c->llc_shared_map); - cpumask_set_cpu(cpu, o->llc_shared_map); + if (cpu_has(c, X86_FEATURE_TOPOEXT)) { + if (c->phys_proc_id == o->phys_proc_id && + c->compute_unit_id == o->compute_unit_id) + link_thread_siblings(cpu, i); + } else if (c->phys_proc_id == o->phys_proc_id && + c->cpu_core_id == o->cpu_core_id) { + link_thread_siblings(cpu, i); } } } else { @@ -1109,8 +1120,6 @@ void __init native_smp_prepare_cpus(unsigned int max_cpus) } set_cpu_sibling_map(0); - enable_IR_x2apic(); - default_setup_apic_routing(); if (smp_sanity_check(max_cpus) < 0) { printk(KERN_INFO "SMP disabled\n"); @@ -1118,6 +1127,8 @@ void __init native_smp_prepare_cpus(unsigned int max_cpus) goto out; } + default_setup_apic_routing(); + preempt_disable(); if (read_apic_id() != boot_cpu_physical_apicid) { panic("Boot APIC ID in local APIC unexpected (%d vs %d)", @@ -1383,11 +1394,88 @@ void play_dead_common(void) local_irq_disable(); } +/* + * We need to flush the caches before going to sleep, lest we have + * dirty data in our caches when we come back up. + */ +static inline void mwait_play_dead(void) +{ + unsigned int eax, ebx, ecx, edx; + unsigned int highest_cstate = 0; + unsigned int highest_subcstate = 0; + int i; + void *mwait_ptr; + + if (!cpu_has(¤t_cpu_data, X86_FEATURE_MWAIT)) + return; + if (!cpu_has(¤t_cpu_data, X86_FEATURE_CLFLSH)) + return; + if (current_cpu_data.cpuid_level < CPUID_MWAIT_LEAF) + return; + + eax = CPUID_MWAIT_LEAF; + ecx = 0; + native_cpuid(&eax, &ebx, &ecx, &edx); + + /* + * eax will be 0 if EDX enumeration is not valid. + * Initialized below to cstate, sub_cstate value when EDX is valid. + */ + if (!(ecx & CPUID5_ECX_EXTENSIONS_SUPPORTED)) { + eax = 0; + } else { + edx >>= MWAIT_SUBSTATE_SIZE; + for (i = 0; i < 7 && edx; i++, edx >>= MWAIT_SUBSTATE_SIZE) { + if (edx & MWAIT_SUBSTATE_MASK) { + highest_cstate = i; + highest_subcstate = edx & MWAIT_SUBSTATE_MASK; + } + } + eax = (highest_cstate << MWAIT_SUBSTATE_SIZE) | + (highest_subcstate - 1); + } + + /* + * This should be a memory location in a cache line which is + * unlikely to be touched by other processors. The actual + * content is immaterial as it is not actually modified in any way. + */ + mwait_ptr = ¤t_thread_info()->flags; + + wbinvd(); + + while (1) { + /* + * The CLFLUSH is a workaround for erratum AAI65 for + * the Xeon 7400 series. It's not clear it is actually + * needed, but it should be harmless in either case. + * The WBINVD is insufficient due to the spurious-wakeup + * case where we return around the loop. + */ + clflush(mwait_ptr); + __monitor(mwait_ptr, 0, 0); + mb(); + __mwait(eax, 0); + } +} + +static inline void hlt_play_dead(void) +{ + if (current_cpu_data.x86 >= 4) + wbinvd(); + + while (1) { + native_halt(); + } +} + void native_play_dead(void) { play_dead_common(); tboot_shutdown(TB_SHUTDOWN_WFS); - wbinvd_halt(); + + mwait_play_dead(); /* Only returns on failure */ + hlt_play_dead(); } #else /* ... !CONFIG_HOTPLUG_CPU */ diff --git a/arch/x86/kernel/sys_i386_32.c b/arch/x86/kernel/sys_i386_32.c index d5e06624e34a..0b0cb5fede19 100644 --- a/arch/x86/kernel/sys_i386_32.c +++ b/arch/x86/kernel/sys_i386_32.c @@ -33,8 +33,8 @@ int kernel_execve(const char *filename, const char *const envp[]) { long __res; - asm volatile ("push %%ebx ; movl %2,%%ebx ; int $0x80 ; pop %%ebx" + asm volatile ("int $0x80" : "=a" (__res) - : "0" (__NR_execve), "ri" (filename), "c" (argv), "d" (envp) : "memory"); + : "0" (__NR_execve), "b" (filename), "c" (argv), "d" (envp) : "memory"); return __res; } diff --git a/arch/x86/kernel/traps.c b/arch/x86/kernel/traps.c index 60788dee0f8a..d43968503dd2 100644 --- a/arch/x86/kernel/traps.c +++ b/arch/x86/kernel/traps.c @@ -776,21 +776,10 @@ asmlinkage void math_state_restore(void) } EXPORT_SYMBOL_GPL(math_state_restore); -#ifndef CONFIG_MATH_EMULATION -void math_emulate(struct math_emu_info *info) -{ - printk(KERN_EMERG - "math-emulation not enabled and no coprocessor found.\n"); - printk(KERN_EMERG "killing %s.\n", current->comm); - force_sig(SIGFPE, current); - schedule(); -} -#endif /* CONFIG_MATH_EMULATION */ - dotraplinkage void __kprobes do_device_not_available(struct pt_regs *regs, long error_code) { -#ifdef CONFIG_X86_32 +#ifdef CONFIG_MATH_EMULATION if (read_cr0() & X86_CR0_EM) { struct math_emu_info info = { }; @@ -798,12 +787,12 @@ do_device_not_available(struct pt_regs *regs, long error_code) info.regs = regs; math_emulate(&info); - } else { - math_state_restore(); /* interrupts still off */ - conditional_sti(regs); + return; } -#else - math_state_restore(); +#endif + math_state_restore(); /* interrupts still off */ +#ifdef CONFIG_X86_32 + conditional_sti(regs); #endif } @@ -881,18 +870,6 @@ void __init trap_init(void) #endif #ifdef CONFIG_X86_32 - if (cpu_has_fxsr) { - printk(KERN_INFO "Enabling fast FPU save and restore... "); - set_in_cr4(X86_CR4_OSFXSR); - printk("done.\n"); - } - if (cpu_has_xmm) { - printk(KERN_INFO - "Enabling unmasked SIMD FPU exception support... "); - set_in_cr4(X86_CR4_OSXMMEXCPT); - printk("done.\n"); - } - set_system_trap_gate(SYSCALL_VECTOR, &system_call); set_bit(SYSCALL_VECTOR, used_vectors); #endif diff --git a/arch/x86/kernel/tsc.c b/arch/x86/kernel/tsc.c index 26a863a9c2a8..0c40d8b72416 100644 --- a/arch/x86/kernel/tsc.c +++ b/arch/x86/kernel/tsc.c @@ -104,10 +104,14 @@ int __init notsc_setup(char *str) __setup("notsc", notsc_setup); +static int no_sched_irq_time; + static int __init tsc_setup(char *str) { if (!strcmp(str, "reliable")) tsc_clocksource_reliable = 1; + if (!strncmp(str, "noirqtime", 9)) + no_sched_irq_time = 1; return 1; } @@ -801,6 +805,7 @@ void mark_tsc_unstable(char *reason) if (!tsc_unstable) { tsc_unstable = 1; sched_clock_stable = 0; + disable_sched_clock_irqtime(); printk(KERN_INFO "Marking TSC unstable due to %s\n", reason); /* Change only the rating, when not registered */ if (clocksource_tsc.mult) @@ -892,60 +897,6 @@ static void __init init_tsc_clocksource(void) clocksource_register_khz(&clocksource_tsc, tsc_khz); } -#ifdef CONFIG_X86_64 -/* - * calibrate_cpu is used on systems with fixed rate TSCs to determine - * processor frequency - */ -#define TICK_COUNT 100000000 -static unsigned long __init calibrate_cpu(void) -{ - int tsc_start, tsc_now; - int i, no_ctr_free; - unsigned long evntsel3 = 0, pmc3 = 0, pmc_now = 0; - unsigned long flags; - - for (i = 0; i < 4; i++) - if (avail_to_resrv_perfctr_nmi_bit(i)) - break; - no_ctr_free = (i == 4); - if (no_ctr_free) { - WARN(1, KERN_WARNING "Warning: AMD perfctrs busy ... " - "cpu_khz value may be incorrect.\n"); - i = 3; - rdmsrl(MSR_K7_EVNTSEL3, evntsel3); - wrmsrl(MSR_K7_EVNTSEL3, 0); - rdmsrl(MSR_K7_PERFCTR3, pmc3); - } else { - reserve_perfctr_nmi(MSR_K7_PERFCTR0 + i); - reserve_evntsel_nmi(MSR_K7_EVNTSEL0 + i); - } - local_irq_save(flags); - /* start measuring cycles, incrementing from 0 */ - wrmsrl(MSR_K7_PERFCTR0 + i, 0); - wrmsrl(MSR_K7_EVNTSEL0 + i, 1 << 22 | 3 << 16 | 0x76); - rdtscl(tsc_start); - do { - rdmsrl(MSR_K7_PERFCTR0 + i, pmc_now); - tsc_now = get_cycles(); - } while ((tsc_now - tsc_start) < TICK_COUNT); - - local_irq_restore(flags); - if (no_ctr_free) { - wrmsrl(MSR_K7_EVNTSEL3, 0); - wrmsrl(MSR_K7_PERFCTR3, pmc3); - wrmsrl(MSR_K7_EVNTSEL3, evntsel3); - } else { - release_perfctr_nmi(MSR_K7_PERFCTR0 + i); - release_evntsel_nmi(MSR_K7_EVNTSEL0 + i); - } - - return pmc_now * tsc_khz / (tsc_now - tsc_start); -} -#else -static inline unsigned long calibrate_cpu(void) { return cpu_khz; } -#endif - void __init tsc_init(void) { u64 lpj; @@ -964,10 +915,6 @@ void __init tsc_init(void) return; } - if (cpu_has(&boot_cpu_data, X86_FEATURE_CONSTANT_TSC) && - (boot_cpu_data.x86_vendor == X86_VENDOR_AMD)) - cpu_khz = calibrate_cpu(); - printk("Detected %lu.%03lu MHz processor.\n", (unsigned long)cpu_khz / 1000, (unsigned long)cpu_khz % 1000); @@ -987,6 +934,9 @@ void __init tsc_init(void) /* now allow native_sched_clock() to use rdtsc */ tsc_disabled = 0; + if (!no_sched_irq_time) + enable_sched_clock_irqtime(); + lpj = ((u64)tsc_khz * 1000); do_div(lpj, HZ); lpj_fine = lpj; diff --git a/arch/x86/kernel/uv_irq.c b/arch/x86/kernel/uv_irq.c index 1132129db792..7b24460917d5 100644 --- a/arch/x86/kernel/uv_irq.c +++ b/arch/x86/kernel/uv_irq.c @@ -28,34 +28,21 @@ struct uv_irq_2_mmr_pnode{ static spinlock_t uv_irq_lock; static struct rb_root uv_irq_root; -static int uv_set_irq_affinity(unsigned int, const struct cpumask *); +static int uv_set_irq_affinity(struct irq_data *, const struct cpumask *, bool); -static void uv_noop(unsigned int irq) -{ -} - -static unsigned int uv_noop_ret(unsigned int irq) -{ - return 0; -} +static void uv_noop(struct irq_data *data) { } -static void uv_ack_apic(unsigned int irq) +static void uv_ack_apic(struct irq_data *data) { ack_APIC_irq(); } static struct irq_chip uv_irq_chip = { - .name = "UV-CORE", - .startup = uv_noop_ret, - .shutdown = uv_noop, - .enable = uv_noop, - .disable = uv_noop, - .ack = uv_noop, - .mask = uv_noop, - .unmask = uv_noop, - .eoi = uv_ack_apic, - .end = uv_noop, - .set_affinity = uv_set_irq_affinity, + .name = "UV-CORE", + .irq_mask = uv_noop, + .irq_unmask = uv_noop, + .irq_eoi = uv_ack_apic, + .irq_set_affinity = uv_set_irq_affinity, }; /* @@ -144,26 +131,22 @@ arch_enable_uv_irq(char *irq_name, unsigned int irq, int cpu, int mmr_blade, unsigned long mmr_offset, int limit) { const struct cpumask *eligible_cpu = cpumask_of(cpu); - struct irq_desc *desc = irq_to_desc(irq); - struct irq_cfg *cfg; - int mmr_pnode; + struct irq_cfg *cfg = get_irq_chip_data(irq); unsigned long mmr_value; struct uv_IO_APIC_route_entry *entry; - int err; + int mmr_pnode, err; BUILD_BUG_ON(sizeof(struct uv_IO_APIC_route_entry) != sizeof(unsigned long)); - cfg = irq_cfg(irq); - err = assign_irq_vector(irq, cfg, eligible_cpu); if (err != 0) return err; if (limit == UV_AFFINITY_CPU) - desc->status |= IRQ_NO_BALANCING; + irq_set_status_flags(irq, IRQ_NO_BALANCING); else - desc->status |= IRQ_MOVE_PCNTXT; + irq_set_status_flags(irq, IRQ_MOVE_PCNTXT); set_irq_chip_and_handler_name(irq, &uv_irq_chip, handle_percpu_irq, irq_name); @@ -206,17 +189,17 @@ static void arch_disable_uv_irq(int mmr_pnode, unsigned long mmr_offset) uv_write_global_mmr64(mmr_pnode, mmr_offset, mmr_value); } -static int uv_set_irq_affinity(unsigned int irq, const struct cpumask *mask) +static int +uv_set_irq_affinity(struct irq_data *data, const struct cpumask *mask, + bool force) { - struct irq_desc *desc = irq_to_desc(irq); - struct irq_cfg *cfg = desc->chip_data; + struct irq_cfg *cfg = data->chip_data; unsigned int dest; - unsigned long mmr_value; + unsigned long mmr_value, mmr_offset; struct uv_IO_APIC_route_entry *entry; - unsigned long mmr_offset; int mmr_pnode; - if (set_desc_affinity(desc, mask, &dest)) + if (__ioapic_set_affinity(data, mask, &dest)) return -1; mmr_value = 0; @@ -231,7 +214,7 @@ static int uv_set_irq_affinity(unsigned int irq, const struct cpumask *mask) entry->dest = dest; /* Get previously stored MMR and pnode of hub sourcing interrupts */ - if (uv_irq_2_mmr_info(irq, &mmr_offset, &mmr_pnode)) + if (uv_irq_2_mmr_info(data->irq, &mmr_offset, &mmr_pnode)) return -1; uv_write_global_mmr64(mmr_pnode, mmr_offset, mmr_value); diff --git a/arch/x86/kernel/visws_quirks.c b/arch/x86/kernel/visws_quirks.c index e680ea52db9b..3371bd053b89 100644 --- a/arch/x86/kernel/visws_quirks.c +++ b/arch/x86/kernel/visws_quirks.c @@ -66,10 +66,7 @@ static void __init visws_time_init(void) } /* Replaces the default init_ISA_irqs in the generic setup */ -static void __init visws_pre_intr_init(void) -{ - init_VISWS_APIC_irqs(); -} +static void __init visws_pre_intr_init(void); /* Quirk for machine specific memory setup. */ @@ -429,67 +426,34 @@ static int is_co_apic(unsigned int irq) /* * This is the SGI Cobalt (IO-)APIC: */ - -static void enable_cobalt_irq(unsigned int irq) +static void enable_cobalt_irq(struct irq_data *data) { - co_apic_set(is_co_apic(irq), irq); + co_apic_set(is_co_apic(data->irq), data->irq); } -static void disable_cobalt_irq(unsigned int irq) +static void disable_cobalt_irq(struct irq_data *data) { - int entry = is_co_apic(irq); + int entry = is_co_apic(data->irq); co_apic_write(CO_APIC_LO(entry), CO_APIC_MASK); co_apic_read(CO_APIC_LO(entry)); } -/* - * "irq" really just serves to identify the device. Here is where we - * map this to the Cobalt APIC entry where it's physically wired. - * This is called via request_irq -> setup_irq -> irq_desc->startup() - */ -static unsigned int startup_cobalt_irq(unsigned int irq) +static void ack_cobalt_irq(struct irq_data *data) { unsigned long flags; - struct irq_desc *desc = irq_to_desc(irq); spin_lock_irqsave(&cobalt_lock, flags); - if ((desc->status & (IRQ_DISABLED | IRQ_INPROGRESS | IRQ_WAITING))) - desc->status &= ~(IRQ_DISABLED | IRQ_INPROGRESS | IRQ_WAITING); - enable_cobalt_irq(irq); - spin_unlock_irqrestore(&cobalt_lock, flags); - return 0; -} - -static void ack_cobalt_irq(unsigned int irq) -{ - unsigned long flags; - - spin_lock_irqsave(&cobalt_lock, flags); - disable_cobalt_irq(irq); + disable_cobalt_irq(data); apic_write(APIC_EOI, APIC_EIO_ACK); spin_unlock_irqrestore(&cobalt_lock, flags); } -static void end_cobalt_irq(unsigned int irq) -{ - unsigned long flags; - struct irq_desc *desc = irq_to_desc(irq); - - spin_lock_irqsave(&cobalt_lock, flags); - if (!(desc->status & (IRQ_DISABLED | IRQ_INPROGRESS))) - enable_cobalt_irq(irq); - spin_unlock_irqrestore(&cobalt_lock, flags); -} - static struct irq_chip cobalt_irq_type = { - .name = "Cobalt-APIC", - .startup = startup_cobalt_irq, - .shutdown = disable_cobalt_irq, - .enable = enable_cobalt_irq, - .disable = disable_cobalt_irq, - .ack = ack_cobalt_irq, - .end = end_cobalt_irq, + .name = "Cobalt-APIC", + .irq_enable = enable_cobalt_irq, + .irq_disable = disable_cobalt_irq, + .irq_ack = ack_cobalt_irq, }; @@ -503,35 +467,34 @@ static struct irq_chip cobalt_irq_type = { * interrupt controller type, and through a special virtual interrupt- * controller. Device drivers only see the virtual interrupt sources. */ -static unsigned int startup_piix4_master_irq(unsigned int irq) +static unsigned int startup_piix4_master_irq(struct irq_data *data) { legacy_pic->init(0); - - return startup_cobalt_irq(irq); + enable_cobalt_irq(data); } -static void end_piix4_master_irq(unsigned int irq) +static void end_piix4_master_irq(struct irq_data *data) { unsigned long flags; spin_lock_irqsave(&cobalt_lock, flags); - enable_cobalt_irq(irq); + enable_cobalt_irq(data); spin_unlock_irqrestore(&cobalt_lock, flags); } static struct irq_chip piix4_master_irq_type = { - .name = "PIIX4-master", - .startup = startup_piix4_master_irq, - .ack = ack_cobalt_irq, - .end = end_piix4_master_irq, + .name = "PIIX4-master", + .irq_startup = startup_piix4_master_irq, + .irq_ack = ack_cobalt_irq, }; +static void pii4_mask(struct irq_data *data) { } static struct irq_chip piix4_virtual_irq_type = { - .name = "PIIX4-virtual", + .name = "PIIX4-virtual", + .mask = pii4_mask, }; - /* * PIIX4-8259 master/virtual functions to handle interrupt requests * from legacy devices: floppy, parallel, serial, rtc. @@ -549,9 +512,8 @@ static struct irq_chip piix4_virtual_irq_type = { */ static irqreturn_t piix4_master_intr(int irq, void *dev_id) { - int realirq; - struct irq_desc *desc; unsigned long flags; + int realirq; raw_spin_lock_irqsave(&i8259A_lock, flags); @@ -592,18 +554,10 @@ static irqreturn_t piix4_master_intr(int irq, void *dev_id) raw_spin_unlock_irqrestore(&i8259A_lock, flags); - desc = irq_to_desc(realirq); - /* * handle this 'virtual interrupt' as a Cobalt one now. */ - kstat_incr_irqs_this_cpu(realirq, desc); - - if (likely(desc->action != NULL)) - handle_IRQ_event(realirq, desc->action); - - if (!(desc->status & IRQ_DISABLED)) - legacy_pic->chip->unmask(realirq); + generic_handle_irq(realirq); return IRQ_HANDLED; @@ -624,41 +578,35 @@ static struct irqaction cascade_action = { static inline void set_piix4_virtual_irq_type(void) { - piix4_virtual_irq_type.shutdown = i8259A_chip.mask; piix4_virtual_irq_type.enable = i8259A_chip.unmask; piix4_virtual_irq_type.disable = i8259A_chip.mask; + piix4_virtual_irq_type.unmask = i8259A_chip.unmask; } -void init_VISWS_APIC_irqs(void) +static void __init visws_pre_intr_init(void) { int i; - for (i = 0; i < CO_IRQ_APIC0 + CO_APIC_LAST + 1; i++) { - struct irq_desc *desc = irq_to_desc(i); - - desc->status = IRQ_DISABLED; - desc->action = 0; - desc->depth = 1; + set_piix4_virtual_irq_type(); - if (i == 0) { - desc->chip = &cobalt_irq_type; - } - else if (i == CO_IRQ_IDE0) { - desc->chip = &cobalt_irq_type; - } - else if (i == CO_IRQ_IDE1) { - desc->chip = &cobalt_irq_type; - } - else if (i == CO_IRQ_8259) { - desc->chip = &piix4_master_irq_type; - } - else if (i < CO_IRQ_APIC0) { - set_piix4_virtual_irq_type(); - desc->chip = &piix4_virtual_irq_type; - } - else if (IS_CO_APIC(i)) { - desc->chip = &cobalt_irq_type; - } + for (i = 0; i < CO_IRQ_APIC0 + CO_APIC_LAST + 1; i++) { + struct irq_chip *chip = NULL; + + if (i == 0) + chip = &cobalt_irq_type; + else if (i == CO_IRQ_IDE0) + chip = &cobalt_irq_type; + else if (i == CO_IRQ_IDE1) + >chip = &cobalt_irq_type; + else if (i == CO_IRQ_8259) + chip = &piix4_master_irq_type; + else if (i < CO_IRQ_APIC0) + chip = &piix4_virtual_irq_type; + else if (IS_CO_APIC(i)) + chip = &cobalt_irq_type; + + if (chip) + set_irq_chip(i, chip); } setup_irq(CO_IRQ_8259, &master_action); diff --git a/arch/x86/kernel/vmi_32.c b/arch/x86/kernel/vmi_32.c deleted file mode 100644 index ce9fbacb7526..000000000000 --- a/arch/x86/kernel/vmi_32.c +++ /dev/null @@ -1,893 +0,0 @@ -/* - * VMI specific paravirt-ops implementation - * - * Copyright (C) 2005, VMware, Inc. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or - * NON INFRINGEMENT. See the GNU General Public License for more - * details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - * - * Send feedback to zach@vmware.com - * - */ - -#include <linux/module.h> -#include <linux/cpu.h> -#include <linux/bootmem.h> -#include <linux/mm.h> -#include <linux/highmem.h> -#include <linux/sched.h> -#include <linux/gfp.h> -#include <asm/vmi.h> -#include <asm/io.h> -#include <asm/fixmap.h> -#include <asm/apicdef.h> -#include <asm/apic.h> -#include <asm/pgalloc.h> -#include <asm/processor.h> -#include <asm/timer.h> -#include <asm/vmi_time.h> -#include <asm/kmap_types.h> -#include <asm/setup.h> - -/* Convenient for calling VMI functions indirectly in the ROM */ -typedef u32 __attribute__((regparm(1))) (VROMFUNC)(void); -typedef u64 __attribute__((regparm(2))) (VROMLONGFUNC)(int); - -#define call_vrom_func(rom,func) \ - (((VROMFUNC *)(rom->func))()) - -#define call_vrom_long_func(rom,func,arg) \ - (((VROMLONGFUNC *)(rom->func)) (arg)) - -static struct vrom_header *vmi_rom; -static int disable_pge; -static int disable_pse; -static int disable_sep; -static int disable_tsc; -static int disable_mtrr; -static int disable_noidle; -static int disable_vmi_timer; - -/* Cached VMI operations */ -static struct { - void (*cpuid)(void /* non-c */); - void (*_set_ldt)(u32 selector); - void (*set_tr)(u32 selector); - void (*write_idt_entry)(struct desc_struct *, int, u32, u32); - void (*write_gdt_entry)(struct desc_struct *, int, u32, u32); - void (*write_ldt_entry)(struct desc_struct *, int, u32, u32); - void (*set_kernel_stack)(u32 selector, u32 sp0); - void (*allocate_page)(u32, u32, u32, u32, u32); - void (*release_page)(u32, u32); - void (*set_pte)(pte_t, pte_t *, unsigned); - void (*update_pte)(pte_t *, unsigned); - void (*set_linear_mapping)(int, void *, u32, u32); - void (*_flush_tlb)(int); - void (*set_initial_ap_state)(int, int); - void (*halt)(void); - void (*set_lazy_mode)(int mode); -} vmi_ops; - -/* Cached VMI operations */ -struct vmi_timer_ops vmi_timer_ops; - -/* - * VMI patching routines. - */ -#define MNEM_CALL 0xe8 -#define MNEM_JMP 0xe9 -#define MNEM_RET 0xc3 - -#define IRQ_PATCH_INT_MASK 0 -#define IRQ_PATCH_DISABLE 5 - -static inline void patch_offset(void *insnbuf, - unsigned long ip, unsigned long dest) -{ - *(unsigned long *)(insnbuf+1) = dest-ip-5; -} - -static unsigned patch_internal(int call, unsigned len, void *insnbuf, - unsigned long ip) -{ - u64 reloc; - struct vmi_relocation_info *const rel = (struct vmi_relocation_info *)&reloc; - reloc = call_vrom_long_func(vmi_rom, get_reloc, call); - switch(rel->type) { - case VMI_RELOCATION_CALL_REL: - BUG_ON(len < 5); - *(char *)insnbuf = MNEM_CALL; - patch_offset(insnbuf, ip, (unsigned long)rel->eip); - return 5; - - case VMI_RELOCATION_JUMP_REL: - BUG_ON(len < 5); - *(char *)insnbuf = MNEM_JMP; - patch_offset(insnbuf, ip, (unsigned long)rel->eip); - return 5; - - case VMI_RELOCATION_NOP: - /* obliterate the whole thing */ - return 0; - - case VMI_RELOCATION_NONE: - /* leave native code in place */ - break; - - default: - BUG(); - } - return len; -} - -/* - * Apply patch if appropriate, return length of new instruction - * sequence. The callee does nop padding for us. - */ -static unsigned vmi_patch(u8 type, u16 clobbers, void *insns, - unsigned long ip, unsigned len) -{ - switch (type) { - case PARAVIRT_PATCH(pv_irq_ops.irq_disable): - return patch_internal(VMI_CALL_DisableInterrupts, len, - insns, ip); - case PARAVIRT_PATCH(pv_irq_ops.irq_enable): - return patch_internal(VMI_CALL_EnableInterrupts, len, - insns, ip); - case PARAVIRT_PATCH(pv_irq_ops.restore_fl): - return patch_internal(VMI_CALL_SetInterruptMask, len, - insns, ip); - case PARAVIRT_PATCH(pv_irq_ops.save_fl): - return patch_internal(VMI_CALL_GetInterruptMask, len, - insns, ip); - case PARAVIRT_PATCH(pv_cpu_ops.iret): - return patch_internal(VMI_CALL_IRET, len, insns, ip); - case PARAVIRT_PATCH(pv_cpu_ops.irq_enable_sysexit): - return patch_internal(VMI_CALL_SYSEXIT, len, insns, ip); - default: - break; - } - return len; -} - -/* CPUID has non-C semantics, and paravirt-ops API doesn't match hardware ISA */ -static void vmi_cpuid(unsigned int *ax, unsigned int *bx, - unsigned int *cx, unsigned int *dx) -{ - int override = 0; - if (*ax == 1) - override = 1; - asm volatile ("call *%6" - : "=a" (*ax), - "=b" (*bx), - "=c" (*cx), - "=d" (*dx) - : "0" (*ax), "2" (*cx), "r" (vmi_ops.cpuid)); - if (override) { - if (disable_pse) - *dx &= ~X86_FEATURE_PSE; - if (disable_pge) - *dx &= ~X86_FEATURE_PGE; - if (disable_sep) - *dx &= ~X86_FEATURE_SEP; - if (disable_tsc) - *dx &= ~X86_FEATURE_TSC; - if (disable_mtrr) - *dx &= ~X86_FEATURE_MTRR; - } -} - -static inline void vmi_maybe_load_tls(struct desc_struct *gdt, int nr, struct desc_struct *new) -{ - if (gdt[nr].a != new->a || gdt[nr].b != new->b) - write_gdt_entry(gdt, nr, new, 0); -} - -static void vmi_load_tls(struct thread_struct *t, unsigned int cpu) -{ - struct desc_struct *gdt = get_cpu_gdt_table(cpu); - vmi_maybe_load_tls(gdt, GDT_ENTRY_TLS_MIN + 0, &t->tls_array[0]); - vmi_maybe_load_tls(gdt, GDT_ENTRY_TLS_MIN + 1, &t->tls_array[1]); - vmi_maybe_load_tls(gdt, GDT_ENTRY_TLS_MIN + 2, &t->tls_array[2]); -} - -static void vmi_set_ldt(const void *addr, unsigned entries) -{ - unsigned cpu = smp_processor_id(); - struct desc_struct desc; - - pack_descriptor(&desc, (unsigned long)addr, - entries * sizeof(struct desc_struct) - 1, - DESC_LDT, 0); - write_gdt_entry(get_cpu_gdt_table(cpu), GDT_ENTRY_LDT, &desc, DESC_LDT); - vmi_ops._set_ldt(entries ? GDT_ENTRY_LDT*sizeof(struct desc_struct) : 0); -} - -static void vmi_set_tr(void) -{ - vmi_ops.set_tr(GDT_ENTRY_TSS*sizeof(struct desc_struct)); -} - -static void vmi_write_idt_entry(gate_desc *dt, int entry, const gate_desc *g) -{ - u32 *idt_entry = (u32 *)g; - vmi_ops.write_idt_entry(dt, entry, idt_entry[0], idt_entry[1]); -} - -static void vmi_write_gdt_entry(struct desc_struct *dt, int entry, - const void *desc, int type) -{ - u32 *gdt_entry = (u32 *)desc; - vmi_ops.write_gdt_entry(dt, entry, gdt_entry[0], gdt_entry[1]); -} - -static void vmi_write_ldt_entry(struct desc_struct *dt, int entry, - const void *desc) -{ - u32 *ldt_entry = (u32 *)desc; - vmi_ops.write_ldt_entry(dt, entry, ldt_entry[0], ldt_entry[1]); -} - -static void vmi_load_sp0(struct tss_struct *tss, - struct thread_struct *thread) -{ - tss->x86_tss.sp0 = thread->sp0; - - /* This can only happen when SEP is enabled, no need to test "SEP"arately */ - if (unlikely(tss->x86_tss.ss1 != thread->sysenter_cs)) { - tss->x86_tss.ss1 = thread->sysenter_cs; - wrmsr(MSR_IA32_SYSENTER_CS, thread->sysenter_cs, 0); - } - vmi_ops.set_kernel_stack(__KERNEL_DS, tss->x86_tss.sp0); -} - -static void vmi_flush_tlb_user(void) -{ - vmi_ops._flush_tlb(VMI_FLUSH_TLB); -} - -static void vmi_flush_tlb_kernel(void) -{ - vmi_ops._flush_tlb(VMI_FLUSH_TLB | VMI_FLUSH_GLOBAL); -} - -/* Stub to do nothing at all; used for delays and unimplemented calls */ -static void vmi_nop(void) -{ -} - -static void vmi_allocate_pte(struct mm_struct *mm, unsigned long pfn) -{ - vmi_ops.allocate_page(pfn, VMI_PAGE_L1, 0, 0, 0); -} - -static void vmi_allocate_pmd(struct mm_struct *mm, unsigned long pfn) -{ - /* - * This call comes in very early, before mem_map is setup. - * It is called only for swapper_pg_dir, which already has - * data on it. - */ - vmi_ops.allocate_page(pfn, VMI_PAGE_L2, 0, 0, 0); -} - -static void vmi_allocate_pmd_clone(unsigned long pfn, unsigned long clonepfn, unsigned long start, unsigned long count) -{ - vmi_ops.allocate_page(pfn, VMI_PAGE_L2 | VMI_PAGE_CLONE, clonepfn, start, count); -} - -static void vmi_release_pte(unsigned long pfn) -{ - vmi_ops.release_page(pfn, VMI_PAGE_L1); -} - -static void vmi_release_pmd(unsigned long pfn) -{ - vmi_ops.release_page(pfn, VMI_PAGE_L2); -} - -/* - * We use the pgd_free hook for releasing the pgd page: - */ -static void vmi_pgd_free(struct mm_struct *mm, pgd_t *pgd) -{ - unsigned long pfn = __pa(pgd) >> PAGE_SHIFT; - - vmi_ops.release_page(pfn, VMI_PAGE_L2); -} - -/* - * Helper macros for MMU update flags. We can defer updates until a flush - * or page invalidation only if the update is to the current address space - * (otherwise, there is no flush). We must check against init_mm, since - * this could be a kernel update, which usually passes init_mm, although - * sometimes this check can be skipped if we know the particular function - * is only called on user mode PTEs. We could change the kernel to pass - * current->active_mm here, but in particular, I was unsure if changing - * mm/highmem.c to do this would still be correct on other architectures. - */ -#define is_current_as(mm, mustbeuser) ((mm) == current->active_mm || \ - (!mustbeuser && (mm) == &init_mm)) -#define vmi_flags_addr(mm, addr, level, user) \ - ((level) | (is_current_as(mm, user) ? \ - (VMI_PAGE_CURRENT_AS | ((addr) & VMI_PAGE_VA_MASK)) : 0)) -#define vmi_flags_addr_defer(mm, addr, level, user) \ - ((level) | (is_current_as(mm, user) ? \ - (VMI_PAGE_DEFER | VMI_PAGE_CURRENT_AS | ((addr) & VMI_PAGE_VA_MASK)) : 0)) - -static void vmi_update_pte(struct mm_struct *mm, unsigned long addr, pte_t *ptep) -{ - vmi_ops.update_pte(ptep, vmi_flags_addr(mm, addr, VMI_PAGE_PT, 0)); -} - -static void vmi_update_pte_defer(struct mm_struct *mm, unsigned long addr, pte_t *ptep) -{ - vmi_ops.update_pte(ptep, vmi_flags_addr_defer(mm, addr, VMI_PAGE_PT, 0)); -} - -static void vmi_set_pte(pte_t *ptep, pte_t pte) -{ - /* XXX because of set_pmd_pte, this can be called on PT or PD layers */ - vmi_ops.set_pte(pte, ptep, VMI_PAGE_PT); -} - -static void vmi_set_pte_at(struct mm_struct *mm, unsigned long addr, pte_t *ptep, pte_t pte) -{ - vmi_ops.set_pte(pte, ptep, vmi_flags_addr(mm, addr, VMI_PAGE_PT, 0)); -} - -static void vmi_set_pmd(pmd_t *pmdp, pmd_t pmdval) -{ -#ifdef CONFIG_X86_PAE - const pte_t pte = { .pte = pmdval.pmd }; -#else - const pte_t pte = { pmdval.pud.pgd.pgd }; -#endif - vmi_ops.set_pte(pte, (pte_t *)pmdp, VMI_PAGE_PD); -} - -#ifdef CONFIG_X86_PAE - -static void vmi_set_pte_atomic(pte_t *ptep, pte_t pteval) -{ - /* - * XXX This is called from set_pmd_pte, but at both PT - * and PD layers so the VMI_PAGE_PT flag is wrong. But - * it is only called for large page mapping changes, - * the Xen backend, doesn't support large pages, and the - * ESX backend doesn't depend on the flag. - */ - set_64bit((unsigned long long *)ptep,pte_val(pteval)); - vmi_ops.update_pte(ptep, VMI_PAGE_PT); -} - -static void vmi_set_pud(pud_t *pudp, pud_t pudval) -{ - /* Um, eww */ - const pte_t pte = { .pte = pudval.pgd.pgd }; - vmi_ops.set_pte(pte, (pte_t *)pudp, VMI_PAGE_PDP); -} - -static void vmi_pte_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep) -{ - const pte_t pte = { .pte = 0 }; - vmi_ops.set_pte(pte, ptep, vmi_flags_addr(mm, addr, VMI_PAGE_PT, 0)); -} - -static void vmi_pmd_clear(pmd_t *pmd) -{ - const pte_t pte = { .pte = 0 }; - vmi_ops.set_pte(pte, (pte_t *)pmd, VMI_PAGE_PD); -} -#endif - -#ifdef CONFIG_SMP -static void __devinit -vmi_startup_ipi_hook(int phys_apicid, unsigned long start_eip, - unsigned long start_esp) -{ - struct vmi_ap_state ap; - - /* Default everything to zero. This is fine for most GPRs. */ - memset(&ap, 0, sizeof(struct vmi_ap_state)); - - ap.gdtr_limit = GDT_SIZE - 1; - ap.gdtr_base = (unsigned long) get_cpu_gdt_table(phys_apicid); - - ap.idtr_limit = IDT_ENTRIES * 8 - 1; - ap.idtr_base = (unsigned long) idt_table; - - ap.ldtr = 0; - - ap.cs = __KERNEL_CS; - ap.eip = (unsigned long) start_eip; - ap.ss = __KERNEL_DS; - ap.esp = (unsigned long) start_esp; - - ap.ds = __USER_DS; - ap.es = __USER_DS; - ap.fs = __KERNEL_PERCPU; - ap.gs = __KERNEL_STACK_CANARY; - - ap.eflags = 0; - -#ifdef CONFIG_X86_PAE - /* efer should match BSP efer. */ - if (cpu_has_nx) { - unsigned l, h; - rdmsr(MSR_EFER, l, h); - ap.efer = (unsigned long long) h << 32 | l; - } -#endif - - ap.cr3 = __pa(swapper_pg_dir); - /* Protected mode, paging, AM, WP, NE, MP. */ - ap.cr0 = 0x80050023; - ap.cr4 = mmu_cr4_features; - vmi_ops.set_initial_ap_state((u32)&ap, phys_apicid); -} -#endif - -static void vmi_start_context_switch(struct task_struct *prev) -{ - paravirt_start_context_switch(prev); - vmi_ops.set_lazy_mode(2); -} - -static void vmi_end_context_switch(struct task_struct *next) -{ - vmi_ops.set_lazy_mode(0); - paravirt_end_context_switch(next); -} - -static void vmi_enter_lazy_mmu(void) -{ - paravirt_enter_lazy_mmu(); - vmi_ops.set_lazy_mode(1); -} - -static void vmi_leave_lazy_mmu(void) -{ - vmi_ops.set_lazy_mode(0); - paravirt_leave_lazy_mmu(); -} - -static inline int __init check_vmi_rom(struct vrom_header *rom) -{ - struct pci_header *pci; - struct pnp_header *pnp; - const char *manufacturer = "UNKNOWN"; - const char *product = "UNKNOWN"; - const char *license = "unspecified"; - - if (rom->rom_signature != 0xaa55) - return 0; - if (rom->vrom_signature != VMI_SIGNATURE) - return 0; - if (rom->api_version_maj != VMI_API_REV_MAJOR || - rom->api_version_min+1 < VMI_API_REV_MINOR+1) { - printk(KERN_WARNING "VMI: Found mismatched rom version %d.%d\n", - rom->api_version_maj, - rom->api_version_min); - return 0; - } - - /* - * Relying on the VMI_SIGNATURE field is not 100% safe, so check - * the PCI header and device type to make sure this is really a - * VMI device. - */ - if (!rom->pci_header_offs) { - printk(KERN_WARNING "VMI: ROM does not contain PCI header.\n"); - return 0; - } - - pci = (struct pci_header *)((char *)rom+rom->pci_header_offs); - if (pci->vendorID != PCI_VENDOR_ID_VMWARE || - pci->deviceID != PCI_DEVICE_ID_VMWARE_VMI) { - /* Allow it to run... anyways, but warn */ - printk(KERN_WARNING "VMI: ROM from unknown manufacturer\n"); - } - - if (rom->pnp_header_offs) { - pnp = (struct pnp_header *)((char *)rom+rom->pnp_header_offs); - if (pnp->manufacturer_offset) - manufacturer = (const char *)rom+pnp->manufacturer_offset; - if (pnp->product_offset) - product = (const char *)rom+pnp->product_offset; - } - - if (rom->license_offs) - license = (char *)rom+rom->license_offs; - - printk(KERN_INFO "VMI: Found %s %s, API version %d.%d, ROM version %d.%d\n", - manufacturer, product, - rom->api_version_maj, rom->api_version_min, - pci->rom_version_maj, pci->rom_version_min); - - /* Don't allow BSD/MIT here for now because we don't want to end up - with any binary only shim layers */ - if (strcmp(license, "GPL") && strcmp(license, "GPL v2")) { - printk(KERN_WARNING "VMI: Non GPL license `%s' found for ROM. Not used.\n", - license); - return 0; - } - - return 1; -} - -/* - * Probe for the VMI option ROM - */ -static inline int __init probe_vmi_rom(void) -{ - unsigned long base; - - /* VMI ROM is in option ROM area, check signature */ - for (base = 0xC0000; base < 0xE0000; base += 2048) { - struct vrom_header *romstart; - romstart = (struct vrom_header *)isa_bus_to_virt(base); - if (check_vmi_rom(romstart)) { - vmi_rom = romstart; - return 1; - } - } - return 0; -} - -/* - * VMI setup common to all processors - */ -void vmi_bringup(void) -{ - /* We must establish the lowmem mapping for MMU ops to work */ - if (vmi_ops.set_linear_mapping) - vmi_ops.set_linear_mapping(0, (void *)__PAGE_OFFSET, MAXMEM_PFN, 0); -} - -/* - * Return a pointer to a VMI function or NULL if unimplemented - */ -static void *vmi_get_function(int vmicall) -{ - u64 reloc; - const struct vmi_relocation_info *rel = (struct vmi_relocation_info *)&reloc; - reloc = call_vrom_long_func(vmi_rom, get_reloc, vmicall); - BUG_ON(rel->type == VMI_RELOCATION_JUMP_REL); - if (rel->type == VMI_RELOCATION_CALL_REL) - return (void *)rel->eip; - else - return NULL; -} - -/* - * Helper macro for making the VMI paravirt-ops fill code readable. - * For unimplemented operations, fall back to default, unless nop - * is returned by the ROM. - */ -#define para_fill(opname, vmicall) \ -do { \ - reloc = call_vrom_long_func(vmi_rom, get_reloc, \ - VMI_CALL_##vmicall); \ - if (rel->type == VMI_RELOCATION_CALL_REL) \ - opname = (void *)rel->eip; \ - else if (rel->type == VMI_RELOCATION_NOP) \ - opname = (void *)vmi_nop; \ - else if (rel->type != VMI_RELOCATION_NONE) \ - printk(KERN_WARNING "VMI: Unknown relocation " \ - "type %d for " #vmicall"\n",\ - rel->type); \ -} while (0) - -/* - * Helper macro for making the VMI paravirt-ops fill code readable. - * For cached operations which do not match the VMI ROM ABI and must - * go through a tranlation stub. Ignore NOPs, since it is not clear - * a NOP * VMI function corresponds to a NOP paravirt-op when the - * functions are not in 1-1 correspondence. - */ -#define para_wrap(opname, wrapper, cache, vmicall) \ -do { \ - reloc = call_vrom_long_func(vmi_rom, get_reloc, \ - VMI_CALL_##vmicall); \ - BUG_ON(rel->type == VMI_RELOCATION_JUMP_REL); \ - if (rel->type == VMI_RELOCATION_CALL_REL) { \ - opname = wrapper; \ - vmi_ops.cache = (void *)rel->eip; \ - } \ -} while (0) - -/* - * Activate the VMI interface and switch into paravirtualized mode - */ -static inline int __init activate_vmi(void) -{ - short kernel_cs; - u64 reloc; - const struct vmi_relocation_info *rel = (struct vmi_relocation_info *)&reloc; - - /* - * Prevent page tables from being allocated in highmem, even if - * CONFIG_HIGHPTE is enabled. - */ - __userpte_alloc_gfp &= ~__GFP_HIGHMEM; - - if (call_vrom_func(vmi_rom, vmi_init) != 0) { - printk(KERN_ERR "VMI ROM failed to initialize!"); - return 0; - } - savesegment(cs, kernel_cs); - - pv_info.paravirt_enabled = 1; - pv_info.kernel_rpl = kernel_cs & SEGMENT_RPL_MASK; - pv_info.name = "vmi [deprecated]"; - - pv_init_ops.patch = vmi_patch; - - /* - * Many of these operations are ABI compatible with VMI. - * This means we can fill in the paravirt-ops with direct - * pointers into the VMI ROM. If the calling convention for - * these operations changes, this code needs to be updated. - * - * Exceptions - * CPUID paravirt-op uses pointers, not the native ISA - * halt has no VMI equivalent; all VMI halts are "safe" - * no MSR support yet - just trap and emulate. VMI uses the - * same ABI as the native ISA, but Linux wants exceptions - * from bogus MSR read / write handled - * rdpmc is not yet used in Linux - */ - - /* CPUID is special, so very special it gets wrapped like a present */ - para_wrap(pv_cpu_ops.cpuid, vmi_cpuid, cpuid, CPUID); - - para_fill(pv_cpu_ops.clts, CLTS); - para_fill(pv_cpu_ops.get_debugreg, GetDR); - para_fill(pv_cpu_ops.set_debugreg, SetDR); - para_fill(pv_cpu_ops.read_cr0, GetCR0); - para_fill(pv_mmu_ops.read_cr2, GetCR2); - para_fill(pv_mmu_ops.read_cr3, GetCR3); - para_fill(pv_cpu_ops.read_cr4, GetCR4); - para_fill(pv_cpu_ops.write_cr0, SetCR0); - para_fill(pv_mmu_ops.write_cr2, SetCR2); - para_fill(pv_mmu_ops.write_cr3, SetCR3); - para_fill(pv_cpu_ops.write_cr4, SetCR4); - - para_fill(pv_irq_ops.save_fl.func, GetInterruptMask); - para_fill(pv_irq_ops.restore_fl.func, SetInterruptMask); - para_fill(pv_irq_ops.irq_disable.func, DisableInterrupts); - para_fill(pv_irq_ops.irq_enable.func, EnableInterrupts); - - para_fill(pv_cpu_ops.wbinvd, WBINVD); - para_fill(pv_cpu_ops.read_tsc, RDTSC); - - /* The following we emulate with trap and emulate for now */ - /* paravirt_ops.read_msr = vmi_rdmsr */ - /* paravirt_ops.write_msr = vmi_wrmsr */ - /* paravirt_ops.rdpmc = vmi_rdpmc */ - - /* TR interface doesn't pass TR value, wrap */ - para_wrap(pv_cpu_ops.load_tr_desc, vmi_set_tr, set_tr, SetTR); - - /* LDT is special, too */ - para_wrap(pv_cpu_ops.set_ldt, vmi_set_ldt, _set_ldt, SetLDT); - - para_fill(pv_cpu_ops.load_gdt, SetGDT); - para_fill(pv_cpu_ops.load_idt, SetIDT); - para_fill(pv_cpu_ops.store_gdt, GetGDT); - para_fill(pv_cpu_ops.store_idt, GetIDT); - para_fill(pv_cpu_ops.store_tr, GetTR); - pv_cpu_ops.load_tls = vmi_load_tls; - para_wrap(pv_cpu_ops.write_ldt_entry, vmi_write_ldt_entry, - write_ldt_entry, WriteLDTEntry); - para_wrap(pv_cpu_ops.write_gdt_entry, vmi_write_gdt_entry, - write_gdt_entry, WriteGDTEntry); - para_wrap(pv_cpu_ops.write_idt_entry, vmi_write_idt_entry, - write_idt_entry, WriteIDTEntry); - para_wrap(pv_cpu_ops.load_sp0, vmi_load_sp0, set_kernel_stack, UpdateKernelStack); - para_fill(pv_cpu_ops.set_iopl_mask, SetIOPLMask); - para_fill(pv_cpu_ops.io_delay, IODelay); - - para_wrap(pv_cpu_ops.start_context_switch, vmi_start_context_switch, - set_lazy_mode, SetLazyMode); - para_wrap(pv_cpu_ops.end_context_switch, vmi_end_context_switch, - set_lazy_mode, SetLazyMode); - - para_wrap(pv_mmu_ops.lazy_mode.enter, vmi_enter_lazy_mmu, - set_lazy_mode, SetLazyMode); - para_wrap(pv_mmu_ops.lazy_mode.leave, vmi_leave_lazy_mmu, - set_lazy_mode, SetLazyMode); - - /* user and kernel flush are just handled with different flags to FlushTLB */ - para_wrap(pv_mmu_ops.flush_tlb_user, vmi_flush_tlb_user, _flush_tlb, FlushTLB); - para_wrap(pv_mmu_ops.flush_tlb_kernel, vmi_flush_tlb_kernel, _flush_tlb, FlushTLB); - para_fill(pv_mmu_ops.flush_tlb_single, InvalPage); - - /* - * Until a standard flag format can be agreed on, we need to - * implement these as wrappers in Linux. Get the VMI ROM - * function pointers for the two backend calls. - */ -#ifdef CONFIG_X86_PAE - vmi_ops.set_pte = vmi_get_function(VMI_CALL_SetPxELong); - vmi_ops.update_pte = vmi_get_function(VMI_CALL_UpdatePxELong); -#else - vmi_ops.set_pte = vmi_get_function(VMI_CALL_SetPxE); - vmi_ops.update_pte = vmi_get_function(VMI_CALL_UpdatePxE); -#endif - - if (vmi_ops.set_pte) { - pv_mmu_ops.set_pte = vmi_set_pte; - pv_mmu_ops.set_pte_at = vmi_set_pte_at; - pv_mmu_ops.set_pmd = vmi_set_pmd; -#ifdef CONFIG_X86_PAE - pv_mmu_ops.set_pte_atomic = vmi_set_pte_atomic; - pv_mmu_ops.set_pud = vmi_set_pud; - pv_mmu_ops.pte_clear = vmi_pte_clear; - pv_mmu_ops.pmd_clear = vmi_pmd_clear; -#endif - } - - if (vmi_ops.update_pte) { - pv_mmu_ops.pte_update = vmi_update_pte; - pv_mmu_ops.pte_update_defer = vmi_update_pte_defer; - } - - vmi_ops.allocate_page = vmi_get_function(VMI_CALL_AllocatePage); - if (vmi_ops.allocate_page) { - pv_mmu_ops.alloc_pte = vmi_allocate_pte; - pv_mmu_ops.alloc_pmd = vmi_allocate_pmd; - pv_mmu_ops.alloc_pmd_clone = vmi_allocate_pmd_clone; - } - - vmi_ops.release_page = vmi_get_function(VMI_CALL_ReleasePage); - if (vmi_ops.release_page) { - pv_mmu_ops.release_pte = vmi_release_pte; - pv_mmu_ops.release_pmd = vmi_release_pmd; - pv_mmu_ops.pgd_free = vmi_pgd_free; - } - - /* Set linear is needed in all cases */ - vmi_ops.set_linear_mapping = vmi_get_function(VMI_CALL_SetLinearMapping); - - /* - * These MUST always be patched. Don't support indirect jumps - * through these operations, as the VMI interface may use either - * a jump or a call to get to these operations, depending on - * the backend. They are performance critical anyway, so requiring - * a patch is not a big problem. - */ - pv_cpu_ops.irq_enable_sysexit = (void *)0xfeedbab0; - pv_cpu_ops.iret = (void *)0xbadbab0; - -#ifdef CONFIG_SMP - para_wrap(pv_apic_ops.startup_ipi_hook, vmi_startup_ipi_hook, set_initial_ap_state, SetInitialAPState); -#endif - -#ifdef CONFIG_X86_LOCAL_APIC - para_fill(apic->read, APICRead); - para_fill(apic->write, APICWrite); -#endif - - /* - * Check for VMI timer functionality by probing for a cycle frequency method - */ - reloc = call_vrom_long_func(vmi_rom, get_reloc, VMI_CALL_GetCycleFrequency); - if (!disable_vmi_timer && rel->type != VMI_RELOCATION_NONE) { - vmi_timer_ops.get_cycle_frequency = (void *)rel->eip; - vmi_timer_ops.get_cycle_counter = - vmi_get_function(VMI_CALL_GetCycleCounter); - vmi_timer_ops.get_wallclock = - vmi_get_function(VMI_CALL_GetWallclockTime); - vmi_timer_ops.wallclock_updated = - vmi_get_function(VMI_CALL_WallclockUpdated); - vmi_timer_ops.set_alarm = vmi_get_function(VMI_CALL_SetAlarm); - vmi_timer_ops.cancel_alarm = - vmi_get_function(VMI_CALL_CancelAlarm); - x86_init.timers.timer_init = vmi_time_init; -#ifdef CONFIG_X86_LOCAL_APIC - x86_init.timers.setup_percpu_clockev = vmi_time_bsp_init; - x86_cpuinit.setup_percpu_clockev = vmi_time_ap_init; -#endif - pv_time_ops.sched_clock = vmi_sched_clock; - x86_platform.calibrate_tsc = vmi_tsc_khz; - x86_platform.get_wallclock = vmi_get_wallclock; - x86_platform.set_wallclock = vmi_set_wallclock; - - /* We have true wallclock functions; disable CMOS clock sync */ - no_sync_cmos_clock = 1; - } else { - disable_noidle = 1; - disable_vmi_timer = 1; - } - - para_fill(pv_irq_ops.safe_halt, Halt); - - /* - * Alternative instruction rewriting doesn't happen soon enough - * to convert VMI_IRET to a call instead of a jump; so we have - * to do this before IRQs get reenabled. Fortunately, it is - * idempotent. - */ - apply_paravirt(__parainstructions, __parainstructions_end); - - vmi_bringup(); - - return 1; -} - -#undef para_fill - -void __init vmi_init(void) -{ - if (!vmi_rom) - probe_vmi_rom(); - else - check_vmi_rom(vmi_rom); - - /* In case probing for or validating the ROM failed, basil */ - if (!vmi_rom) - return; - - reserve_top_address(-vmi_rom->virtual_top); - -#ifdef CONFIG_X86_IO_APIC - /* This is virtual hardware; timer routing is wired correctly */ - no_timer_check = 1; -#endif -} - -void __init vmi_activate(void) -{ - unsigned long flags; - - if (!vmi_rom) - return; - - local_irq_save(flags); - activate_vmi(); - local_irq_restore(flags & X86_EFLAGS_IF); -} - -static int __init parse_vmi(char *arg) -{ - if (!arg) - return -EINVAL; - - if (!strcmp(arg, "disable_pge")) { - clear_cpu_cap(&boot_cpu_data, X86_FEATURE_PGE); - disable_pge = 1; - } else if (!strcmp(arg, "disable_pse")) { - clear_cpu_cap(&boot_cpu_data, X86_FEATURE_PSE); - disable_pse = 1; - } else if (!strcmp(arg, "disable_sep")) { - clear_cpu_cap(&boot_cpu_data, X86_FEATURE_SEP); - disable_sep = 1; - } else if (!strcmp(arg, "disable_tsc")) { - clear_cpu_cap(&boot_cpu_data, X86_FEATURE_TSC); - disable_tsc = 1; - } else if (!strcmp(arg, "disable_mtrr")) { - clear_cpu_cap(&boot_cpu_data, X86_FEATURE_MTRR); - disable_mtrr = 1; - } else if (!strcmp(arg, "disable_timer")) { - disable_vmi_timer = 1; - disable_noidle = 1; - } else if (!strcmp(arg, "disable_noidle")) - disable_noidle = 1; - return 0; -} - -early_param("vmi", parse_vmi); diff --git a/arch/x86/kernel/vmiclock_32.c b/arch/x86/kernel/vmiclock_32.c deleted file mode 100644 index 5e1ff66ecd73..000000000000 --- a/arch/x86/kernel/vmiclock_32.c +++ /dev/null @@ -1,317 +0,0 @@ -/* - * VMI paravirtual timer support routines. - * - * Copyright (C) 2007, VMware, Inc. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or - * NON INFRINGEMENT. See the GNU General Public License for more - * details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - * - */ - -#include <linux/smp.h> -#include <linux/interrupt.h> -#include <linux/cpumask.h> -#include <linux/clocksource.h> -#include <linux/clockchips.h> - -#include <asm/vmi.h> -#include <asm/vmi_time.h> -#include <asm/apicdef.h> -#include <asm/apic.h> -#include <asm/timer.h> -#include <asm/i8253.h> -#include <asm/irq_vectors.h> - -#define VMI_ONESHOT (VMI_ALARM_IS_ONESHOT | VMI_CYCLES_REAL | vmi_get_alarm_wiring()) -#define VMI_PERIODIC (VMI_ALARM_IS_PERIODIC | VMI_CYCLES_REAL | vmi_get_alarm_wiring()) - -static DEFINE_PER_CPU(struct clock_event_device, local_events); - -static inline u32 vmi_counter(u32 flags) -{ - /* Given VMI_ONESHOT or VMI_PERIODIC, return the corresponding - * cycle counter. */ - return flags & VMI_ALARM_COUNTER_MASK; -} - -/* paravirt_ops.get_wallclock = vmi_get_wallclock */ -unsigned long vmi_get_wallclock(void) -{ - unsigned long long wallclock; - wallclock = vmi_timer_ops.get_wallclock(); // nsec - (void)do_div(wallclock, 1000000000); // sec - - return wallclock; -} - -/* paravirt_ops.set_wallclock = vmi_set_wallclock */ -int vmi_set_wallclock(unsigned long now) -{ - return 0; -} - -/* paravirt_ops.sched_clock = vmi_sched_clock */ -unsigned long long vmi_sched_clock(void) -{ - return cycles_2_ns(vmi_timer_ops.get_cycle_counter(VMI_CYCLES_AVAILABLE)); -} - -/* x86_platform.calibrate_tsc = vmi_tsc_khz */ -unsigned long vmi_tsc_khz(void) -{ - unsigned long long khz; - khz = vmi_timer_ops.get_cycle_frequency(); - (void)do_div(khz, 1000); - return khz; -} - -static inline unsigned int vmi_get_timer_vector(void) -{ - return IRQ0_VECTOR; -} - -/** vmi clockchip */ -#ifdef CONFIG_X86_LOCAL_APIC -static unsigned int startup_timer_irq(unsigned int irq) -{ - unsigned long val = apic_read(APIC_LVTT); - apic_write(APIC_LVTT, vmi_get_timer_vector()); - - return (val & APIC_SEND_PENDING); -} - -static void mask_timer_irq(unsigned int irq) -{ - unsigned long val = apic_read(APIC_LVTT); - apic_write(APIC_LVTT, val | APIC_LVT_MASKED); -} - -static void unmask_timer_irq(unsigned int irq) -{ - unsigned long val = apic_read(APIC_LVTT); - apic_write(APIC_LVTT, val & ~APIC_LVT_MASKED); -} - -static void ack_timer_irq(unsigned int irq) -{ - ack_APIC_irq(); -} - -static struct irq_chip vmi_chip __read_mostly = { - .name = "VMI-LOCAL", - .startup = startup_timer_irq, - .mask = mask_timer_irq, - .unmask = unmask_timer_irq, - .ack = ack_timer_irq -}; -#endif - -/** vmi clockevent */ -#define VMI_ALARM_WIRED_IRQ0 0x00000000 -#define VMI_ALARM_WIRED_LVTT 0x00010000 -static int vmi_wiring = VMI_ALARM_WIRED_IRQ0; - -static inline int vmi_get_alarm_wiring(void) -{ - return vmi_wiring; -} - -static void vmi_timer_set_mode(enum clock_event_mode mode, - struct clock_event_device *evt) -{ - cycle_t now, cycles_per_hz; - BUG_ON(!irqs_disabled()); - - switch (mode) { - case CLOCK_EVT_MODE_ONESHOT: - case CLOCK_EVT_MODE_RESUME: - break; - case CLOCK_EVT_MODE_PERIODIC: - cycles_per_hz = vmi_timer_ops.get_cycle_frequency(); - (void)do_div(cycles_per_hz, HZ); - now = vmi_timer_ops.get_cycle_counter(vmi_counter(VMI_PERIODIC)); - vmi_timer_ops.set_alarm(VMI_PERIODIC, now, cycles_per_hz); - break; - case CLOCK_EVT_MODE_UNUSED: - case CLOCK_EVT_MODE_SHUTDOWN: - switch (evt->mode) { - case CLOCK_EVT_MODE_ONESHOT: - vmi_timer_ops.cancel_alarm(VMI_ONESHOT); - break; - case CLOCK_EVT_MODE_PERIODIC: - vmi_timer_ops.cancel_alarm(VMI_PERIODIC); - break; - default: - break; - } - break; - default: - break; - } -} - -static int vmi_timer_next_event(unsigned long delta, - struct clock_event_device *evt) -{ - /* Unfortunately, set_next_event interface only passes relative - * expiry, but we want absolute expiry. It'd be better if were - * were passed an absolute expiry, since a bunch of time may - * have been stolen between the time the delta is computed and - * when we set the alarm below. */ - cycle_t now = vmi_timer_ops.get_cycle_counter(vmi_counter(VMI_ONESHOT)); - - BUG_ON(evt->mode != CLOCK_EVT_MODE_ONESHOT); - vmi_timer_ops.set_alarm(VMI_ONESHOT, now + delta, 0); - return 0; -} - -static struct clock_event_device vmi_clockevent = { - .name = "vmi-timer", - .features = CLOCK_EVT_FEAT_PERIODIC | CLOCK_EVT_FEAT_ONESHOT, - .shift = 22, - .set_mode = vmi_timer_set_mode, - .set_next_event = vmi_timer_next_event, - .rating = 1000, - .irq = 0, -}; - -static irqreturn_t vmi_timer_interrupt(int irq, void *dev_id) -{ - struct clock_event_device *evt = &__get_cpu_var(local_events); - evt->event_handler(evt); - return IRQ_HANDLED; -} - -static struct irqaction vmi_clock_action = { - .name = "vmi-timer", - .handler = vmi_timer_interrupt, - .flags = IRQF_DISABLED | IRQF_NOBALANCING | IRQF_TIMER, -}; - -static void __devinit vmi_time_init_clockevent(void) -{ - cycle_t cycles_per_msec; - struct clock_event_device *evt; - - int cpu = smp_processor_id(); - evt = &__get_cpu_var(local_events); - - /* Use cycles_per_msec since div_sc params are 32-bits. */ - cycles_per_msec = vmi_timer_ops.get_cycle_frequency(); - (void)do_div(cycles_per_msec, 1000); - - memcpy(evt, &vmi_clockevent, sizeof(*evt)); - /* Must pick .shift such that .mult fits in 32-bits. Choosing - * .shift to be 22 allows 2^(32-22) cycles per nano-seconds - * before overflow. */ - evt->mult = div_sc(cycles_per_msec, NSEC_PER_MSEC, evt->shift); - /* Upper bound is clockevent's use of ulong for cycle deltas. */ - evt->max_delta_ns = clockevent_delta2ns(ULONG_MAX, evt); - evt->min_delta_ns = clockevent_delta2ns(1, evt); - evt->cpumask = cpumask_of(cpu); - - printk(KERN_WARNING "vmi: registering clock event %s. mult=%u shift=%u\n", - evt->name, evt->mult, evt->shift); - clockevents_register_device(evt); -} - -void __init vmi_time_init(void) -{ - unsigned int cpu; - /* Disable PIT: BIOSes start PIT CH0 with 18.2hz peridic. */ - outb_pit(0x3a, PIT_MODE); /* binary, mode 5, LSB/MSB, ch 0 */ - - vmi_time_init_clockevent(); - setup_irq(0, &vmi_clock_action); - for_each_possible_cpu(cpu) - per_cpu(vector_irq, cpu)[vmi_get_timer_vector()] = 0; -} - -#ifdef CONFIG_X86_LOCAL_APIC -void __devinit vmi_time_bsp_init(void) -{ - /* - * On APIC systems, we want local timers to fire on each cpu. We do - * this by programming LVTT to deliver timer events to the IRQ handler - * for IRQ-0, since we can't re-use the APIC local timer handler - * without interfering with that code. - */ - clockevents_notify(CLOCK_EVT_NOTIFY_SUSPEND, NULL); - local_irq_disable(); -#ifdef CONFIG_SMP - /* - * XXX handle_percpu_irq only defined for SMP; we need to switch over - * to using it, since this is a local interrupt, which each CPU must - * handle individually without locking out or dropping simultaneous - * local timers on other CPUs. We also don't want to trigger the - * quirk workaround code for interrupts which gets invoked from - * handle_percpu_irq via eoi, so we use our own IRQ chip. - */ - set_irq_chip_and_handler_name(0, &vmi_chip, handle_percpu_irq, "lvtt"); -#else - set_irq_chip_and_handler_name(0, &vmi_chip, handle_edge_irq, "lvtt"); -#endif - vmi_wiring = VMI_ALARM_WIRED_LVTT; - apic_write(APIC_LVTT, vmi_get_timer_vector()); - local_irq_enable(); - clockevents_notify(CLOCK_EVT_NOTIFY_RESUME, NULL); -} - -void __devinit vmi_time_ap_init(void) -{ - vmi_time_init_clockevent(); - apic_write(APIC_LVTT, vmi_get_timer_vector()); -} -#endif - -/** vmi clocksource */ -static struct clocksource clocksource_vmi; - -static cycle_t read_real_cycles(struct clocksource *cs) -{ - cycle_t ret = (cycle_t)vmi_timer_ops.get_cycle_counter(VMI_CYCLES_REAL); - return max(ret, clocksource_vmi.cycle_last); -} - -static struct clocksource clocksource_vmi = { - .name = "vmi-timer", - .rating = 450, - .read = read_real_cycles, - .mask = CLOCKSOURCE_MASK(64), - .mult = 0, /* to be set */ - .shift = 22, - .flags = CLOCK_SOURCE_IS_CONTINUOUS, -}; - -static int __init init_vmi_clocksource(void) -{ - cycle_t cycles_per_msec; - - if (!vmi_timer_ops.get_cycle_frequency) - return 0; - /* Use khz2mult rather than hz2mult since hz arg is only 32-bits. */ - cycles_per_msec = vmi_timer_ops.get_cycle_frequency(); - (void)do_div(cycles_per_msec, 1000); - - /* Note that clocksource.{mult, shift} converts in the opposite direction - * as clockevents. */ - clocksource_vmi.mult = clocksource_khz2mult(cycles_per_msec, - clocksource_vmi.shift); - - printk(KERN_WARNING "vmi: registering clock source khz=%lld\n", cycles_per_msec); - return clocksource_register(&clocksource_vmi); - -} -module_init(init_vmi_clocksource); diff --git a/arch/x86/kernel/vmlinux.lds.S b/arch/x86/kernel/vmlinux.lds.S index d0bb52296fa3..38e2b67807e1 100644 --- a/arch/x86/kernel/vmlinux.lds.S +++ b/arch/x86/kernel/vmlinux.lds.S @@ -242,6 +242,12 @@ SECTIONS __x86_cpu_dev_end = .; } + /* + * start address and size of operations which during runtime + * can be patched with virtualization friendly instructions or + * baremetal native ones. Think page table operations. + * Details in paravirt_types.h + */ . = ALIGN(8); .parainstructions : AT(ADDR(.parainstructions) - LOAD_OFFSET) { __parainstructions = .; @@ -249,6 +255,11 @@ SECTIONS __parainstructions_end = .; } + /* + * struct alt_inst entries. From the header (alternative.h): + * "Alternative instructions for different CPU types or capabilities" + * Think locking instructions on spinlocks. + */ . = ALIGN(8); .altinstructions : AT(ADDR(.altinstructions) - LOAD_OFFSET) { __alt_instructions = .; @@ -256,11 +267,28 @@ SECTIONS __alt_instructions_end = .; } + /* + * And here are the replacement instructions. The linker sticks + * them as binary blobs. The .altinstructions has enough data to + * get the address and the length of them to patch the kernel safely. + */ .altinstr_replacement : AT(ADDR(.altinstr_replacement) - LOAD_OFFSET) { *(.altinstr_replacement) } /* + * struct iommu_table_entry entries are injected in this section. + * It is an array of IOMMUs which during run time gets sorted depending + * on its dependency order. After rootfs_initcall is complete + * this section can be safely removed. + */ + .iommu_table : AT(ADDR(.iommu_table) - LOAD_OFFSET) { + __iommu_table = .; + *(.iommu_table) + __iommu_table_end = .; + } + . = ALIGN(8); + /* * .exit.text is discard at runtime, not link time, to deal with * references from .altinstructions and .eh_frame */ diff --git a/arch/x86/kvm/lapic.c b/arch/x86/kvm/lapic.c index 77d8c0f4817d..22b06f7660f4 100644 --- a/arch/x86/kvm/lapic.c +++ b/arch/x86/kvm/lapic.c @@ -1056,14 +1056,13 @@ int kvm_create_lapic(struct kvm_vcpu *vcpu) vcpu->arch.apic = apic; - apic->regs_page = alloc_page(GFP_KERNEL); + apic->regs_page = alloc_page(GFP_KERNEL|__GFP_ZERO); if (apic->regs_page == NULL) { printk(KERN_ERR "malloc apic regs error for vcpu %x\n", vcpu->vcpu_id); goto nomem_free_apic; } apic->regs = page_address(apic->regs_page); - memset(apic->regs, 0, PAGE_SIZE); apic->vcpu = vcpu; hrtimer_init(&apic->lapic_timer.timer, CLOCK_MONOTONIC, diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c index 81ed28cb36e6..8a3f9f64f86f 100644 --- a/arch/x86/kvm/svm.c +++ b/arch/x86/kvm/svm.c @@ -3163,8 +3163,8 @@ static void svm_vcpu_run(struct kvm_vcpu *vcpu) sync_lapic_to_cr8(vcpu); save_host_msrs(vcpu); - fs_selector = kvm_read_fs(); - gs_selector = kvm_read_gs(); + savesegment(fs, fs_selector); + savesegment(gs, gs_selector); ldt_selector = kvm_read_ldt(); svm->vmcb->save.cr2 = vcpu->arch.cr2; /* required for live migration with NPT */ @@ -3251,10 +3251,15 @@ static void svm_vcpu_run(struct kvm_vcpu *vcpu) vcpu->arch.regs[VCPU_REGS_RSP] = svm->vmcb->save.rsp; vcpu->arch.regs[VCPU_REGS_RIP] = svm->vmcb->save.rip; - kvm_load_fs(fs_selector); - kvm_load_gs(gs_selector); - kvm_load_ldt(ldt_selector); load_host_msrs(vcpu); + loadsegment(fs, fs_selector); +#ifdef CONFIG_X86_64 + load_gs_index(gs_selector); + wrmsrl(MSR_KERNEL_GS_BASE, current->thread.gs); +#else + loadsegment(gs, gs_selector); +#endif + kvm_load_ldt(ldt_selector); reload_tss(vcpu); diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index 49b25eee25ac..7bddfab12013 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.c @@ -803,7 +803,7 @@ static void vmx_save_host_state(struct kvm_vcpu *vcpu) */ vmx->host_state.ldt_sel = kvm_read_ldt(); vmx->host_state.gs_ldt_reload_needed = vmx->host_state.ldt_sel; - vmx->host_state.fs_sel = kvm_read_fs(); + savesegment(fs, vmx->host_state.fs_sel); if (!(vmx->host_state.fs_sel & 7)) { vmcs_write16(HOST_FS_SELECTOR, vmx->host_state.fs_sel); vmx->host_state.fs_reload_needed = 0; @@ -811,7 +811,7 @@ static void vmx_save_host_state(struct kvm_vcpu *vcpu) vmcs_write16(HOST_FS_SELECTOR, 0); vmx->host_state.fs_reload_needed = 1; } - vmx->host_state.gs_sel = kvm_read_gs(); + savesegment(gs, vmx->host_state.gs_sel); if (!(vmx->host_state.gs_sel & 7)) vmcs_write16(HOST_GS_SELECTOR, vmx->host_state.gs_sel); else { @@ -841,27 +841,21 @@ static void vmx_save_host_state(struct kvm_vcpu *vcpu) static void __vmx_load_host_state(struct vcpu_vmx *vmx) { - unsigned long flags; - if (!vmx->host_state.loaded) return; ++vmx->vcpu.stat.host_state_reload; vmx->host_state.loaded = 0; if (vmx->host_state.fs_reload_needed) - kvm_load_fs(vmx->host_state.fs_sel); + loadsegment(fs, vmx->host_state.fs_sel); if (vmx->host_state.gs_ldt_reload_needed) { kvm_load_ldt(vmx->host_state.ldt_sel); - /* - * If we have to reload gs, we must take care to - * preserve our gs base. - */ - local_irq_save(flags); - kvm_load_gs(vmx->host_state.gs_sel); #ifdef CONFIG_X86_64 - wrmsrl(MSR_GS_BASE, vmcs_readl(HOST_GS_BASE)); + load_gs_index(vmx->host_state.gs_sel); + wrmsrl(MSR_KERNEL_GS_BASE, current->thread.gs); +#else + loadsegment(gs, vmx->host_state.gs_sel); #endif - local_irq_restore(flags); } reload_tss(); #ifdef CONFIG_X86_64 @@ -2589,8 +2583,8 @@ static int vmx_vcpu_setup(struct vcpu_vmx *vmx) vmcs_write16(HOST_CS_SELECTOR, __KERNEL_CS); /* 22.2.4 */ vmcs_write16(HOST_DS_SELECTOR, __KERNEL_DS); /* 22.2.4 */ vmcs_write16(HOST_ES_SELECTOR, __KERNEL_DS); /* 22.2.4 */ - vmcs_write16(HOST_FS_SELECTOR, kvm_read_fs()); /* 22.2.4 */ - vmcs_write16(HOST_GS_SELECTOR, kvm_read_gs()); /* 22.2.4 */ + vmcs_write16(HOST_FS_SELECTOR, 0); /* 22.2.4 */ + vmcs_write16(HOST_GS_SELECTOR, 0); /* 22.2.4 */ vmcs_write16(HOST_SS_SELECTOR, __KERNEL_DS); /* 22.2.4 */ #ifdef CONFIG_X86_64 rdmsrl(MSR_FS_BASE, a); diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 3a09c625d526..6c2ecf0a806d 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -1991,13 +1991,14 @@ static void do_cpuid_ent(struct kvm_cpuid_entry2 *entry, u32 function, 0 /* Reserved */ | F(CX16) | 0 /* xTPR Update, PDCM */ | 0 /* Reserved, DCA */ | F(XMM4_1) | F(XMM4_2) | F(X2APIC) | F(MOVBE) | F(POPCNT) | - 0 /* Reserved, AES */ | F(XSAVE) | 0 /* OSXSAVE */ | F(AVX); + 0 /* Reserved*/ | F(AES) | F(XSAVE) | 0 /* OSXSAVE */ | F(AVX) | + F(F16C); /* cpuid 0x80000001.ecx */ const u32 kvm_supported_word6_x86_features = F(LAHF_LM) | F(CMP_LEGACY) | F(SVM) | 0 /* ExtApicSpace */ | F(CR8_LEGACY) | F(ABM) | F(SSE4A) | F(MISALIGNSSE) | - F(3DNOWPREFETCH) | 0 /* OSVW */ | 0 /* IBS */ | F(SSE5) | - 0 /* SKINIT */ | 0 /* WDT */; + F(3DNOWPREFETCH) | 0 /* OSVW */ | 0 /* IBS */ | F(XOP) | + 0 /* SKINIT, WDT, LWP */ | F(FMA4) | F(TBM); /* all calls to cpuid_count() should be made on the same cpu */ get_cpu(); diff --git a/arch/x86/lguest/boot.c b/arch/x86/lguest/boot.c index 9d5f55848455..73b1e1a1f489 100644 --- a/arch/x86/lguest/boot.c +++ b/arch/x86/lguest/boot.c @@ -791,22 +791,22 @@ static void lguest_flush_tlb_kernel(void) * simple as setting a bit. We don't actually "ack" interrupts as such, we * just mask and unmask them. I wonder if we should be cleverer? */ -static void disable_lguest_irq(unsigned int irq) +static void disable_lguest_irq(struct irq_data *data) { - set_bit(irq, lguest_data.blocked_interrupts); + set_bit(data->irq, lguest_data.blocked_interrupts); } -static void enable_lguest_irq(unsigned int irq) +static void enable_lguest_irq(struct irq_data *data) { - clear_bit(irq, lguest_data.blocked_interrupts); + clear_bit(data->irq, lguest_data.blocked_interrupts); } /* This structure describes the lguest IRQ controller. */ static struct irq_chip lguest_irq_controller = { .name = "lguest", - .mask = disable_lguest_irq, - .mask_ack = disable_lguest_irq, - .unmask = enable_lguest_irq, + .irq_mask = disable_lguest_irq, + .irq_mask_ack = disable_lguest_irq, + .irq_unmask = enable_lguest_irq, }; /* @@ -838,12 +838,12 @@ static void __init lguest_init_IRQ(void) * rather than set them in lguest_init_IRQ we are called here every time an * lguest device needs an interrupt. * - * FIXME: irq_to_desc_alloc_node() can fail due to lack of memory, we should + * FIXME: irq_alloc_desc_at() can fail due to lack of memory, we should * pass that up! */ void lguest_setup_irq(unsigned int irq) { - irq_to_desc_alloc_node(irq, 0); + irq_alloc_desc_at(irq, 0); set_irq_chip_and_handler_name(irq, &lguest_irq_controller, handle_level_irq, "level"); } diff --git a/arch/x86/lib/memcpy_32.c b/arch/x86/lib/memcpy_32.c index 5415a9d06f53..b908a59eccf5 100644 --- a/arch/x86/lib/memcpy_32.c +++ b/arch/x86/lib/memcpy_32.c @@ -22,22 +22,187 @@ EXPORT_SYMBOL(memset); void *memmove(void *dest, const void *src, size_t n) { - int d0, d1, d2; - - if (dest < src) { - memcpy(dest, src, n); - } else { - __asm__ __volatile__( - "std\n\t" - "rep\n\t" - "movsb\n\t" - "cld" - : "=&c" (d0), "=&S" (d1), "=&D" (d2) - :"0" (n), - "1" (n-1+src), - "2" (n-1+dest) - :"memory"); - } - return dest; + int d0,d1,d2,d3,d4,d5; + char *ret = dest; + + __asm__ __volatile__( + /* Handle more 16bytes in loop */ + "cmp $0x10, %0\n\t" + "jb 1f\n\t" + + /* Decide forward/backward copy mode */ + "cmp %2, %1\n\t" + "jb 2f\n\t" + + /* + * movs instruction have many startup latency + * so we handle small size by general register. + */ + "cmp $680, %0\n\t" + "jb 3f\n\t" + /* + * movs instruction is only good for aligned case. + */ + "mov %1, %3\n\t" + "xor %2, %3\n\t" + "and $0xff, %3\n\t" + "jz 4f\n\t" + "3:\n\t" + "sub $0x10, %0\n\t" + + /* + * We gobble 16byts forward in each loop. + */ + "3:\n\t" + "sub $0x10, %0\n\t" + "mov 0*4(%1), %3\n\t" + "mov 1*4(%1), %4\n\t" + "mov %3, 0*4(%2)\n\t" + "mov %4, 1*4(%2)\n\t" + "mov 2*4(%1), %3\n\t" + "mov 3*4(%1), %4\n\t" + "mov %3, 2*4(%2)\n\t" + "mov %4, 3*4(%2)\n\t" + "lea 0x10(%1), %1\n\t" + "lea 0x10(%2), %2\n\t" + "jae 3b\n\t" + "add $0x10, %0\n\t" + "jmp 1f\n\t" + + /* + * Handle data forward by movs. + */ + ".p2align 4\n\t" + "4:\n\t" + "mov -4(%1, %0), %3\n\t" + "lea -4(%2, %0), %4\n\t" + "shr $2, %0\n\t" + "rep movsl\n\t" + "mov %3, (%4)\n\t" + "jmp 11f\n\t" + /* + * Handle data backward by movs. + */ + ".p2align 4\n\t" + "6:\n\t" + "mov (%1), %3\n\t" + "mov %2, %4\n\t" + "lea -4(%1, %0), %1\n\t" + "lea -4(%2, %0), %2\n\t" + "shr $2, %0\n\t" + "std\n\t" + "rep movsl\n\t" + "mov %3,(%4)\n\t" + "cld\n\t" + "jmp 11f\n\t" + + /* + * Start to prepare for backward copy. + */ + ".p2align 4\n\t" + "2:\n\t" + "cmp $680, %0\n\t" + "jb 5f\n\t" + "mov %1, %3\n\t" + "xor %2, %3\n\t" + "and $0xff, %3\n\t" + "jz 6b\n\t" + + /* + * Calculate copy position to tail. + */ + "5:\n\t" + "add %0, %1\n\t" + "add %0, %2\n\t" + "sub $0x10, %0\n\t" + + /* + * We gobble 16byts backward in each loop. + */ + "7:\n\t" + "sub $0x10, %0\n\t" + + "mov -1*4(%1), %3\n\t" + "mov -2*4(%1), %4\n\t" + "mov %3, -1*4(%2)\n\t" + "mov %4, -2*4(%2)\n\t" + "mov -3*4(%1), %3\n\t" + "mov -4*4(%1), %4\n\t" + "mov %3, -3*4(%2)\n\t" + "mov %4, -4*4(%2)\n\t" + "lea -0x10(%1), %1\n\t" + "lea -0x10(%2), %2\n\t" + "jae 7b\n\t" + /* + * Calculate copy position to head. + */ + "add $0x10, %0\n\t" + "sub %0, %1\n\t" + "sub %0, %2\n\t" + + /* + * Move data from 8 bytes to 15 bytes. + */ + ".p2align 4\n\t" + "1:\n\t" + "cmp $8, %0\n\t" + "jb 8f\n\t" + "mov 0*4(%1), %3\n\t" + "mov 1*4(%1), %4\n\t" + "mov -2*4(%1, %0), %5\n\t" + "mov -1*4(%1, %0), %1\n\t" + + "mov %3, 0*4(%2)\n\t" + "mov %4, 1*4(%2)\n\t" + "mov %5, -2*4(%2, %0)\n\t" + "mov %1, -1*4(%2, %0)\n\t" + "jmp 11f\n\t" + + /* + * Move data from 4 bytes to 7 bytes. + */ + ".p2align 4\n\t" + "8:\n\t" + "cmp $4, %0\n\t" + "jb 9f\n\t" + "mov 0*4(%1), %3\n\t" + "mov -1*4(%1, %0), %4\n\t" + "mov %3, 0*4(%2)\n\t" + "mov %4, -1*4(%2, %0)\n\t" + "jmp 11f\n\t" + + /* + * Move data from 2 bytes to 3 bytes. + */ + ".p2align 4\n\t" + "9:\n\t" + "cmp $2, %0\n\t" + "jb 10f\n\t" + "movw 0*2(%1), %%dx\n\t" + "movw -1*2(%1, %0), %%bx\n\t" + "movw %%dx, 0*2(%2)\n\t" + "movw %%bx, -1*2(%2, %0)\n\t" + "jmp 11f\n\t" + + /* + * Move data for 1 byte. + */ + ".p2align 4\n\t" + "10:\n\t" + "cmp $1, %0\n\t" + "jb 11f\n\t" + "movb (%1), %%cl\n\t" + "movb %%cl, (%2)\n\t" + ".p2align 4\n\t" + "11:" + : "=&c" (d0), "=&S" (d1), "=&D" (d2), + "=r" (d3),"=r" (d4), "=r"(d5) + :"0" (n), + "1" (src), + "2" (dest) + :"memory"); + + return ret; + } EXPORT_SYMBOL(memmove); diff --git a/arch/x86/lib/memcpy_64.S b/arch/x86/lib/memcpy_64.S index bcbcd1e0f7d5..75ef61e35e38 100644 --- a/arch/x86/lib/memcpy_64.S +++ b/arch/x86/lib/memcpy_64.S @@ -40,84 +40,132 @@ ENTRY(__memcpy) ENTRY(memcpy) CFI_STARTPROC + movq %rdi, %rax /* - * Put the number of full 64-byte blocks into %ecx. - * Tail portion is handled at the end: + * Use 32bit CMP here to avoid long NOP padding. */ - movq %rdi, %rax - movl %edx, %ecx - shrl $6, %ecx - jz .Lhandle_tail + cmp $0x20, %edx + jb .Lhandle_tail - .p2align 4 -.Lloop_64: /* - * We decrement the loop index here - and the zero-flag is - * checked at the end of the loop (instructions inbetween do - * not change the zero flag): + * We check whether memory false dependece could occur, + * then jump to corresponding copy mode. */ - decl %ecx + cmp %dil, %sil + jl .Lcopy_backward + subl $0x20, %edx +.Lcopy_forward_loop: + subq $0x20, %rdx /* - * Move in blocks of 4x16 bytes: + * Move in blocks of 4x8 bytes: */ - movq 0*8(%rsi), %r11 - movq 1*8(%rsi), %r8 - movq %r11, 0*8(%rdi) - movq %r8, 1*8(%rdi) - - movq 2*8(%rsi), %r9 - movq 3*8(%rsi), %r10 - movq %r9, 2*8(%rdi) - movq %r10, 3*8(%rdi) - - movq 4*8(%rsi), %r11 - movq 5*8(%rsi), %r8 - movq %r11, 4*8(%rdi) - movq %r8, 5*8(%rdi) - - movq 6*8(%rsi), %r9 - movq 7*8(%rsi), %r10 - movq %r9, 6*8(%rdi) - movq %r10, 7*8(%rdi) - - leaq 64(%rsi), %rsi - leaq 64(%rdi), %rdi - - jnz .Lloop_64 + movq 0*8(%rsi), %r8 + movq 1*8(%rsi), %r9 + movq 2*8(%rsi), %r10 + movq 3*8(%rsi), %r11 + leaq 4*8(%rsi), %rsi + + movq %r8, 0*8(%rdi) + movq %r9, 1*8(%rdi) + movq %r10, 2*8(%rdi) + movq %r11, 3*8(%rdi) + leaq 4*8(%rdi), %rdi + jae .Lcopy_forward_loop + addq $0x20, %rdx + jmp .Lhandle_tail + +.Lcopy_backward: + /* + * Calculate copy position to tail. + */ + addq %rdx, %rsi + addq %rdx, %rdi + subq $0x20, %rdx + /* + * At most 3 ALU operations in one cycle, + * so append NOPS in the same 16bytes trunk. + */ + .p2align 4 +.Lcopy_backward_loop: + subq $0x20, %rdx + movq -1*8(%rsi), %r8 + movq -2*8(%rsi), %r9 + movq -3*8(%rsi), %r10 + movq -4*8(%rsi), %r11 + leaq -4*8(%rsi), %rsi + movq %r8, -1*8(%rdi) + movq %r9, -2*8(%rdi) + movq %r10, -3*8(%rdi) + movq %r11, -4*8(%rdi) + leaq -4*8(%rdi), %rdi + jae .Lcopy_backward_loop + /* + * Calculate copy position to head. + */ + addq $0x20, %rdx + subq %rdx, %rsi + subq %rdx, %rdi .Lhandle_tail: - movl %edx, %ecx - andl $63, %ecx - shrl $3, %ecx - jz .Lhandle_7 + cmpq $16, %rdx + jb .Lless_16bytes + /* + * Move data from 16 bytes to 31 bytes. + */ + movq 0*8(%rsi), %r8 + movq 1*8(%rsi), %r9 + movq -2*8(%rsi, %rdx), %r10 + movq -1*8(%rsi, %rdx), %r11 + movq %r8, 0*8(%rdi) + movq %r9, 1*8(%rdi) + movq %r10, -2*8(%rdi, %rdx) + movq %r11, -1*8(%rdi, %rdx) + retq .p2align 4 -.Lloop_8: - decl %ecx - movq (%rsi), %r8 - movq %r8, (%rdi) - leaq 8(%rdi), %rdi - leaq 8(%rsi), %rsi - jnz .Lloop_8 - -.Lhandle_7: - movl %edx, %ecx - andl $7, %ecx - jz .Lend +.Lless_16bytes: + cmpq $8, %rdx + jb .Lless_8bytes + /* + * Move data from 8 bytes to 15 bytes. + */ + movq 0*8(%rsi), %r8 + movq -1*8(%rsi, %rdx), %r9 + movq %r8, 0*8(%rdi) + movq %r9, -1*8(%rdi, %rdx) + retq + .p2align 4 +.Lless_8bytes: + cmpq $4, %rdx + jb .Lless_3bytes + /* + * Move data from 4 bytes to 7 bytes. + */ + movl (%rsi), %ecx + movl -4(%rsi, %rdx), %r8d + movl %ecx, (%rdi) + movl %r8d, -4(%rdi, %rdx) + retq .p2align 4 +.Lless_3bytes: + cmpl $0, %edx + je .Lend + /* + * Move data from 1 bytes to 3 bytes. + */ .Lloop_1: movb (%rsi), %r8b movb %r8b, (%rdi) incq %rdi incq %rsi - decl %ecx + decl %edx jnz .Lloop_1 .Lend: - ret + retq CFI_ENDPROC ENDPROC(memcpy) ENDPROC(__memcpy) diff --git a/arch/x86/lib/memmove_64.c b/arch/x86/lib/memmove_64.c index 0a33909bf122..6d0f0ec41b34 100644 --- a/arch/x86/lib/memmove_64.c +++ b/arch/x86/lib/memmove_64.c @@ -8,14 +8,185 @@ #undef memmove void *memmove(void *dest, const void *src, size_t count) { - if (dest < src) { - return memcpy(dest, src, count); - } else { - char *p = dest + count; - const char *s = src + count; - while (count--) - *--p = *--s; - } - return dest; + unsigned long d0,d1,d2,d3,d4,d5,d6,d7; + char *ret; + + __asm__ __volatile__( + /* Handle more 32bytes in loop */ + "mov %2, %3\n\t" + "cmp $0x20, %0\n\t" + "jb 1f\n\t" + + /* Decide forward/backward copy mode */ + "cmp %2, %1\n\t" + "jb 2f\n\t" + + /* + * movsq instruction have many startup latency + * so we handle small size by general register. + */ + "cmp $680, %0\n\t" + "jb 3f\n\t" + /* + * movsq instruction is only good for aligned case. + */ + "cmpb %%dil, %%sil\n\t" + "je 4f\n\t" + "3:\n\t" + "sub $0x20, %0\n\t" + /* + * We gobble 32byts forward in each loop. + */ + "5:\n\t" + "sub $0x20, %0\n\t" + "movq 0*8(%1), %4\n\t" + "movq 1*8(%1), %5\n\t" + "movq 2*8(%1), %6\n\t" + "movq 3*8(%1), %7\n\t" + "leaq 4*8(%1), %1\n\t" + + "movq %4, 0*8(%2)\n\t" + "movq %5, 1*8(%2)\n\t" + "movq %6, 2*8(%2)\n\t" + "movq %7, 3*8(%2)\n\t" + "leaq 4*8(%2), %2\n\t" + "jae 5b\n\t" + "addq $0x20, %0\n\t" + "jmp 1f\n\t" + /* + * Handle data forward by movsq. + */ + ".p2align 4\n\t" + "4:\n\t" + "movq %0, %8\n\t" + "movq -8(%1, %0), %4\n\t" + "lea -8(%2, %0), %5\n\t" + "shrq $3, %8\n\t" + "rep movsq\n\t" + "movq %4, (%5)\n\t" + "jmp 13f\n\t" + /* + * Handle data backward by movsq. + */ + ".p2align 4\n\t" + "7:\n\t" + "movq %0, %8\n\t" + "movq (%1), %4\n\t" + "movq %2, %5\n\t" + "leaq -8(%1, %0), %1\n\t" + "leaq -8(%2, %0), %2\n\t" + "shrq $3, %8\n\t" + "std\n\t" + "rep movsq\n\t" + "cld\n\t" + "movq %4, (%5)\n\t" + "jmp 13f\n\t" + + /* + * Start to prepare for backward copy. + */ + ".p2align 4\n\t" + "2:\n\t" + "cmp $680, %0\n\t" + "jb 6f \n\t" + "cmp %%dil, %%sil\n\t" + "je 7b \n\t" + "6:\n\t" + /* + * Calculate copy position to tail. + */ + "addq %0, %1\n\t" + "addq %0, %2\n\t" + "subq $0x20, %0\n\t" + /* + * We gobble 32byts backward in each loop. + */ + "8:\n\t" + "subq $0x20, %0\n\t" + "movq -1*8(%1), %4\n\t" + "movq -2*8(%1), %5\n\t" + "movq -3*8(%1), %6\n\t" + "movq -4*8(%1), %7\n\t" + "leaq -4*8(%1), %1\n\t" + + "movq %4, -1*8(%2)\n\t" + "movq %5, -2*8(%2)\n\t" + "movq %6, -3*8(%2)\n\t" + "movq %7, -4*8(%2)\n\t" + "leaq -4*8(%2), %2\n\t" + "jae 8b\n\t" + /* + * Calculate copy position to head. + */ + "addq $0x20, %0\n\t" + "subq %0, %1\n\t" + "subq %0, %2\n\t" + "1:\n\t" + "cmpq $16, %0\n\t" + "jb 9f\n\t" + /* + * Move data from 16 bytes to 31 bytes. + */ + "movq 0*8(%1), %4\n\t" + "movq 1*8(%1), %5\n\t" + "movq -2*8(%1, %0), %6\n\t" + "movq -1*8(%1, %0), %7\n\t" + "movq %4, 0*8(%2)\n\t" + "movq %5, 1*8(%2)\n\t" + "movq %6, -2*8(%2, %0)\n\t" + "movq %7, -1*8(%2, %0)\n\t" + "jmp 13f\n\t" + ".p2align 4\n\t" + "9:\n\t" + "cmpq $8, %0\n\t" + "jb 10f\n\t" + /* + * Move data from 8 bytes to 15 bytes. + */ + "movq 0*8(%1), %4\n\t" + "movq -1*8(%1, %0), %5\n\t" + "movq %4, 0*8(%2)\n\t" + "movq %5, -1*8(%2, %0)\n\t" + "jmp 13f\n\t" + "10:\n\t" + "cmpq $4, %0\n\t" + "jb 11f\n\t" + /* + * Move data from 4 bytes to 7 bytes. + */ + "movl (%1), %4d\n\t" + "movl -4(%1, %0), %5d\n\t" + "movl %4d, (%2)\n\t" + "movl %5d, -4(%2, %0)\n\t" + "jmp 13f\n\t" + "11:\n\t" + "cmp $2, %0\n\t" + "jb 12f\n\t" + /* + * Move data from 2 bytes to 3 bytes. + */ + "movw (%1), %4w\n\t" + "movw -2(%1, %0), %5w\n\t" + "movw %4w, (%2)\n\t" + "movw %5w, -2(%2, %0)\n\t" + "jmp 13f\n\t" + "12:\n\t" + "cmp $1, %0\n\t" + "jb 13f\n\t" + /* + * Move data for 1 byte. + */ + "movb (%1), %4b\n\t" + "movb %4b, (%2)\n\t" + "13:\n\t" + : "=&d" (d0), "=&S" (d1), "=&D" (d2), "=&a" (ret) , + "=r"(d3), "=r"(d4), "=r"(d5), "=r"(d6), "=&c" (d7) + :"0" (count), + "1" (src), + "2" (dest) + :"memory"); + + return ret; + } EXPORT_SYMBOL(memmove); diff --git a/arch/x86/mm/fault.c b/arch/x86/mm/fault.c index 4c4508e8a204..79b0b372d2d0 100644 --- a/arch/x86/mm/fault.c +++ b/arch/x86/mm/fault.c @@ -229,7 +229,16 @@ void vmalloc_sync_all(void) spin_lock_irqsave(&pgd_lock, flags); list_for_each_entry(page, &pgd_list, lru) { - if (!vmalloc_sync_one(page_address(page), address)) + spinlock_t *pgt_lock; + pmd_t *ret; + + pgt_lock = &pgd_page_get_mm(page)->page_table_lock; + + spin_lock(pgt_lock); + ret = vmalloc_sync_one(page_address(page), address); + spin_unlock(pgt_lock); + + if (!ret) break; } spin_unlock_irqrestore(&pgd_lock, flags); @@ -251,6 +260,8 @@ static noinline __kprobes int vmalloc_fault(unsigned long address) if (!(address >= VMALLOC_START && address < VMALLOC_END)) return -1; + WARN_ON_ONCE(in_nmi()); + /* * Synchronize this task's top level page-table * with the 'reference' page table. @@ -326,29 +337,7 @@ out: void vmalloc_sync_all(void) { - unsigned long address; - - for (address = VMALLOC_START & PGDIR_MASK; address <= VMALLOC_END; - address += PGDIR_SIZE) { - - const pgd_t *pgd_ref = pgd_offset_k(address); - unsigned long flags; - struct page *page; - - if (pgd_none(*pgd_ref)) - continue; - - spin_lock_irqsave(&pgd_lock, flags); - list_for_each_entry(page, &pgd_list, lru) { - pgd_t *pgd; - pgd = (pgd_t *)page_address(page) + pgd_index(address); - if (pgd_none(*pgd)) - set_pgd(pgd, *pgd_ref); - else - BUG_ON(pgd_page_vaddr(*pgd) != pgd_page_vaddr(*pgd_ref)); - } - spin_unlock_irqrestore(&pgd_lock, flags); - } + sync_global_pgds(VMALLOC_START & PGDIR_MASK, VMALLOC_END); } /* @@ -369,6 +358,8 @@ static noinline __kprobes int vmalloc_fault(unsigned long address) if (!(address >= VMALLOC_START && address < VMALLOC_END)) return -1; + WARN_ON_ONCE(in_nmi()); + /* * Copy kernel mappings over when needed. This can also * happen within a race in page table update. In the later @@ -894,8 +885,14 @@ spurious_fault(unsigned long error_code, unsigned long address) if (pmd_large(*pmd)) return spurious_fault_check(error_code, (pte_t *) pmd); + /* + * Note: don't use pte_present() here, since it returns true + * if the _PAGE_PROTNONE bit is set. However, this aliases the + * _PAGE_GLOBAL bit, which for kernel pages give false positives + * when CONFIG_DEBUG_PAGEALLOC is used. + */ pte = pte_offset_kernel(pmd, address); - if (!pte_present(*pte)) + if (!(pte_flags(*pte) & _PAGE_PRESENT)) return 0; ret = spurious_fault_check(error_code, pte); diff --git a/arch/x86/mm/init_32.c b/arch/x86/mm/init_32.c index bca79091b9d6..558f2d332076 100644 --- a/arch/x86/mm/init_32.c +++ b/arch/x86/mm/init_32.c @@ -67,7 +67,7 @@ static __init void *alloc_low_page(void) panic("alloc_low_page: ran out of memory"); adr = __va(pfn * PAGE_SIZE); - memset(adr, 0, PAGE_SIZE); + clear_page(adr); return adr; } @@ -558,7 +558,7 @@ char swsusp_pg_dir[PAGE_SIZE] static inline void save_pg_dir(void) { - memcpy(swsusp_pg_dir, swapper_pg_dir, PAGE_SIZE); + copy_page(swsusp_pg_dir, swapper_pg_dir); } #else /* !CONFIG_ACPI_SLEEP */ static inline void save_pg_dir(void) diff --git a/arch/x86/mm/init_64.c b/arch/x86/mm/init_64.c index 9a6674689a20..c55f900fbf89 100644 --- a/arch/x86/mm/init_64.c +++ b/arch/x86/mm/init_64.c @@ -98,6 +98,43 @@ static int __init nonx32_setup(char *str) __setup("noexec32=", nonx32_setup); /* + * When memory was added/removed make sure all the processes MM have + * suitable PGD entries in the local PGD level page. + */ +void sync_global_pgds(unsigned long start, unsigned long end) +{ + unsigned long address; + + for (address = start; address <= end; address += PGDIR_SIZE) { + const pgd_t *pgd_ref = pgd_offset_k(address); + unsigned long flags; + struct page *page; + + if (pgd_none(*pgd_ref)) + continue; + + spin_lock_irqsave(&pgd_lock, flags); + list_for_each_entry(page, &pgd_list, lru) { + pgd_t *pgd; + spinlock_t *pgt_lock; + + pgd = (pgd_t *)page_address(page) + pgd_index(address); + pgt_lock = &pgd_page_get_mm(page)->page_table_lock; + spin_lock(pgt_lock); + + if (pgd_none(*pgd)) + set_pgd(pgd, *pgd_ref); + else + BUG_ON(pgd_page_vaddr(*pgd) + != pgd_page_vaddr(*pgd_ref)); + + spin_unlock(pgt_lock); + } + spin_unlock_irqrestore(&pgd_lock, flags); + } +} + +/* * NOTE: This function is marked __ref because it calls __init function * (alloc_bootmem_pages). It's safe to do it ONLY when after_bootmem == 0. */ @@ -293,7 +330,7 @@ static __ref void *alloc_low_page(unsigned long *phys) panic("alloc_low_page: ran out of memory"); adr = early_memremap(pfn * PAGE_SIZE, PAGE_SIZE); - memset(adr, 0, PAGE_SIZE); + clear_page(adr); *phys = pfn * PAGE_SIZE; return adr; } @@ -534,11 +571,13 @@ kernel_physical_mapping_init(unsigned long start, unsigned long end, unsigned long page_size_mask) { - + bool pgd_changed = false; unsigned long next, last_map_addr = end; + unsigned long addr; start = (unsigned long)__va(start); end = (unsigned long)__va(end); + addr = start; for (; start < end; start = next) { pgd_t *pgd = pgd_offset_k(start); @@ -563,7 +602,12 @@ kernel_physical_mapping_init(unsigned long start, spin_lock(&init_mm.page_table_lock); pgd_populate(&init_mm, pgd, __va(pud_phys)); spin_unlock(&init_mm.page_table_lock); + pgd_changed = true; } + + if (pgd_changed) + sync_global_pgds(addr, end); + __flush_tlb_all(); return last_map_addr; @@ -1003,6 +1047,7 @@ vmemmap_populate(struct page *start_page, unsigned long size, int node) } } + sync_global_pgds((unsigned long)start_page, end); return 0; } diff --git a/arch/x86/mm/k8topology_64.c b/arch/x86/mm/k8topology_64.c index 970ed579d4e4..52d54bfc1ebb 100644 --- a/arch/x86/mm/k8topology_64.c +++ b/arch/x86/mm/k8topology_64.c @@ -22,7 +22,7 @@ #include <asm/numa.h> #include <asm/mpspec.h> #include <asm/apic.h> -#include <asm/k8.h> +#include <asm/amd_nb.h> static struct bootnode __initdata nodes[8]; static nodemask_t __initdata nodes_parsed = NODE_MASK_NONE; @@ -54,8 +54,8 @@ static __init int find_northbridge(void) static __init void early_get_boot_cpu_id(void) { /* - * need to get boot_cpu_id so can use that to create apicid_to_node - * in k8_scan_nodes() + * need to get the APIC ID of the BSP so can use that to + * create apicid_to_node in k8_scan_nodes() */ #ifdef CONFIG_X86_MPPARSE /* @@ -212,7 +212,7 @@ int __init k8_scan_nodes(void) bits = boot_cpu_data.x86_coreid_bits; cores = (1<<bits); apicid_base = 0; - /* need to get boot_cpu_id early for system with apicid lifting */ + /* get the APIC ID of the BSP early for systems with apicid lifting */ early_get_boot_cpu_id(); if (boot_cpu_physical_apicid > 0) { pr_info("BSP APIC ID: %02x\n", boot_cpu_physical_apicid); diff --git a/arch/x86/mm/kmemcheck/kmemcheck.c b/arch/x86/mm/kmemcheck/kmemcheck.c index b3b531a4f8e5..d87dd6d042d6 100644 --- a/arch/x86/mm/kmemcheck/kmemcheck.c +++ b/arch/x86/mm/kmemcheck/kmemcheck.c @@ -631,6 +631,8 @@ bool kmemcheck_fault(struct pt_regs *regs, unsigned long address, if (!pte) return false; + WARN_ON_ONCE(in_nmi()); + if (error_code & 2) kmemcheck_access(regs, address, KMEMCHECK_WRITE); else diff --git a/arch/x86/mm/kmemcheck/opcode.c b/arch/x86/mm/kmemcheck/opcode.c index 63c19e27aa6f..324aa3f07237 100644 --- a/arch/x86/mm/kmemcheck/opcode.c +++ b/arch/x86/mm/kmemcheck/opcode.c @@ -9,7 +9,7 @@ static bool opcode_is_prefix(uint8_t b) b == 0xf0 || b == 0xf2 || b == 0xf3 /* Group 2 */ || b == 0x2e || b == 0x36 || b == 0x3e || b == 0x26 - || b == 0x64 || b == 0x65 || b == 0x2e || b == 0x3e + || b == 0x64 || b == 0x65 /* Group 3 */ || b == 0x66 /* Group 4 */ diff --git a/arch/x86/mm/numa_64.c b/arch/x86/mm/numa_64.c index a7bcc23ef96c..4962f1aeda6f 100644 --- a/arch/x86/mm/numa_64.c +++ b/arch/x86/mm/numa_64.c @@ -18,7 +18,7 @@ #include <asm/dma.h> #include <asm/numa.h> #include <asm/acpi.h> -#include <asm/k8.h> +#include <asm/amd_nb.h> struct pglist_data *node_data[MAX_NUMNODES] __read_mostly; EXPORT_SYMBOL(node_data); diff --git a/arch/x86/mm/pgtable.c b/arch/x86/mm/pgtable.c index 5c4ee422590e..8be8c7d7bc89 100644 --- a/arch/x86/mm/pgtable.c +++ b/arch/x86/mm/pgtable.c @@ -87,7 +87,19 @@ static inline void pgd_list_del(pgd_t *pgd) #define UNSHARED_PTRS_PER_PGD \ (SHARED_KERNEL_PMD ? KERNEL_PGD_BOUNDARY : PTRS_PER_PGD) -static void pgd_ctor(pgd_t *pgd) + +static void pgd_set_mm(pgd_t *pgd, struct mm_struct *mm) +{ + BUILD_BUG_ON(sizeof(virt_to_page(pgd)->index) < sizeof(mm)); + virt_to_page(pgd)->index = (pgoff_t)mm; +} + +struct mm_struct *pgd_page_get_mm(struct page *page) +{ + return (struct mm_struct *)page->index; +} + +static void pgd_ctor(struct mm_struct *mm, pgd_t *pgd) { /* If the pgd points to a shared pagetable level (either the ptes in non-PAE, or shared PMD in PAE), then just copy the @@ -98,15 +110,13 @@ static void pgd_ctor(pgd_t *pgd) clone_pgd_range(pgd + KERNEL_PGD_BOUNDARY, swapper_pg_dir + KERNEL_PGD_BOUNDARY, KERNEL_PGD_PTRS); - paravirt_alloc_pmd_clone(__pa(pgd) >> PAGE_SHIFT, - __pa(swapper_pg_dir) >> PAGE_SHIFT, - KERNEL_PGD_BOUNDARY, - KERNEL_PGD_PTRS); } /* list required to sync kernel mapping updates */ - if (!SHARED_KERNEL_PMD) + if (!SHARED_KERNEL_PMD) { + pgd_set_mm(pgd, mm); pgd_list_add(pgd); + } } static void pgd_dtor(pgd_t *pgd) @@ -272,7 +282,7 @@ pgd_t *pgd_alloc(struct mm_struct *mm) */ spin_lock_irqsave(&pgd_lock, flags); - pgd_ctor(pgd); + pgd_ctor(mm, pgd); pgd_prepopulate_pmd(mm, pgd, pmds); spin_unlock_irqrestore(&pgd_lock, flags); diff --git a/arch/x86/mm/tlb.c b/arch/x86/mm/tlb.c index c03f14ab6667..49358481c733 100644 --- a/arch/x86/mm/tlb.c +++ b/arch/x86/mm/tlb.c @@ -5,6 +5,7 @@ #include <linux/smp.h> #include <linux/interrupt.h> #include <linux/module.h> +#include <linux/cpu.h> #include <asm/tlbflush.h> #include <asm/mmu_context.h> @@ -52,6 +53,8 @@ union smp_flush_state { want false sharing in the per cpu data segment. */ static union smp_flush_state flush_state[NUM_INVALIDATE_TLB_VECTORS]; +static DEFINE_PER_CPU_READ_MOSTLY(int, tlb_vector_offset); + /* * We cannot call mmdrop() because we are in interrupt context, * instead update mm->cpu_vm_mask. @@ -173,7 +176,7 @@ static void flush_tlb_others_ipi(const struct cpumask *cpumask, union smp_flush_state *f; /* Caller has disabled preemption */ - sender = smp_processor_id() % NUM_INVALIDATE_TLB_VECTORS; + sender = this_cpu_read(tlb_vector_offset); f = &flush_state[sender]; /* @@ -218,6 +221,47 @@ void native_flush_tlb_others(const struct cpumask *cpumask, flush_tlb_others_ipi(cpumask, mm, va); } +static void __cpuinit calculate_tlb_offset(void) +{ + int cpu, node, nr_node_vecs; + /* + * we are changing tlb_vector_offset for each CPU in runtime, but this + * will not cause inconsistency, as the write is atomic under X86. we + * might see more lock contentions in a short time, but after all CPU's + * tlb_vector_offset are changed, everything should go normal + * + * Note: if NUM_INVALIDATE_TLB_VECTORS % nr_online_nodes !=0, we might + * waste some vectors. + **/ + if (nr_online_nodes > NUM_INVALIDATE_TLB_VECTORS) + nr_node_vecs = 1; + else + nr_node_vecs = NUM_INVALIDATE_TLB_VECTORS/nr_online_nodes; + + for_each_online_node(node) { + int node_offset = (node % NUM_INVALIDATE_TLB_VECTORS) * + nr_node_vecs; + int cpu_offset = 0; + for_each_cpu(cpu, cpumask_of_node(node)) { + per_cpu(tlb_vector_offset, cpu) = node_offset + + cpu_offset; + cpu_offset++; + cpu_offset = cpu_offset % nr_node_vecs; + } + } +} + +static int tlb_cpuhp_notify(struct notifier_block *n, + unsigned long action, void *hcpu) +{ + switch (action & 0xf) { + case CPU_ONLINE: + case CPU_DEAD: + calculate_tlb_offset(); + } + return NOTIFY_OK; +} + static int __cpuinit init_smp_flush(void) { int i; @@ -225,6 +269,8 @@ static int __cpuinit init_smp_flush(void) for (i = 0; i < ARRAY_SIZE(flush_state); i++) raw_spin_lock_init(&flush_state[i].tlbstate_lock); + calculate_tlb_offset(); + hotcpu_notifier(tlb_cpuhp_notify, 0); return 0; } core_initcall(init_smp_flush); diff --git a/arch/x86/oprofile/backtrace.c b/arch/x86/oprofile/backtrace.c index 3855096c59b8..2d49d4e19a36 100644 --- a/arch/x86/oprofile/backtrace.c +++ b/arch/x86/oprofile/backtrace.c @@ -14,6 +14,7 @@ #include <asm/ptrace.h> #include <asm/uaccess.h> #include <asm/stacktrace.h> +#include <linux/compat.h> static void backtrace_warning_symbol(void *data, char *msg, unsigned long symbol) @@ -48,14 +49,12 @@ static struct stacktrace_ops backtrace_ops = { .walk_stack = print_context_stack, }; -struct frame_head { - struct frame_head *bp; - unsigned long ret; -} __attribute__((packed)); - -static struct frame_head *dump_user_backtrace(struct frame_head *head) +#ifdef CONFIG_COMPAT +static struct stack_frame_ia32 * +dump_user_backtrace_32(struct stack_frame_ia32 *head) { - struct frame_head bufhead[2]; + struct stack_frame_ia32 bufhead[2]; + struct stack_frame_ia32 *fp; /* Also check accessibility of one struct frame_head beyond */ if (!access_ok(VERIFY_READ, head, sizeof(bufhead))) @@ -63,20 +62,66 @@ static struct frame_head *dump_user_backtrace(struct frame_head *head) if (__copy_from_user_inatomic(bufhead, head, sizeof(bufhead))) return NULL; - oprofile_add_trace(bufhead[0].ret); + fp = (struct stack_frame_ia32 *) compat_ptr(bufhead[0].next_frame); + + oprofile_add_trace(bufhead[0].return_address); + + /* frame pointers should strictly progress back up the stack + * (towards higher addresses) */ + if (head >= fp) + return NULL; + + return fp; +} + +static inline int +x86_backtrace_32(struct pt_regs * const regs, unsigned int depth) +{ + struct stack_frame_ia32 *head; + + /* User process is 32-bit */ + if (!current || !test_thread_flag(TIF_IA32)) + return 0; + + head = (struct stack_frame_ia32 *) regs->bp; + while (depth-- && head) + head = dump_user_backtrace_32(head); + + return 1; +} + +#else +static inline int +x86_backtrace_32(struct pt_regs * const regs, unsigned int depth) +{ + return 0; +} +#endif /* CONFIG_COMPAT */ + +static struct stack_frame *dump_user_backtrace(struct stack_frame *head) +{ + struct stack_frame bufhead[2]; + + /* Also check accessibility of one struct stack_frame beyond */ + if (!access_ok(VERIFY_READ, head, sizeof(bufhead))) + return NULL; + if (__copy_from_user_inatomic(bufhead, head, sizeof(bufhead))) + return NULL; + + oprofile_add_trace(bufhead[0].return_address); /* frame pointers should strictly progress back up the stack * (towards higher addresses) */ - if (head >= bufhead[0].bp) + if (head >= bufhead[0].next_frame) return NULL; - return bufhead[0].bp; + return bufhead[0].next_frame; } void x86_backtrace(struct pt_regs * const regs, unsigned int depth) { - struct frame_head *head = (struct frame_head *)frame_pointer(regs); + struct stack_frame *head = (struct stack_frame *)frame_pointer(regs); if (!user_mode_vm(regs)) { unsigned long stack = kernel_stack_pointer(regs); @@ -86,6 +131,9 @@ x86_backtrace(struct pt_regs * const regs, unsigned int depth) return; } + if (x86_backtrace_32(regs, depth)) + return; + while (depth-- && head) head = dump_user_backtrace(head); } diff --git a/arch/x86/oprofile/nmi_int.c b/arch/x86/oprofile/nmi_int.c index f1575c9a2572..bd1489c3ce09 100644 --- a/arch/x86/oprofile/nmi_int.c +++ b/arch/x86/oprofile/nmi_int.c @@ -695,9 +695,6 @@ static int __init ppro_init(char **cpu_type) return 1; } -/* in order to get sysfs right */ -static int using_nmi; - int __init op_nmi_init(struct oprofile_operations *ops) { __u8 vendor = boot_cpu_data.x86_vendor; @@ -705,8 +702,6 @@ int __init op_nmi_init(struct oprofile_operations *ops) char *cpu_type = NULL; int ret = 0; - using_nmi = 0; - if (!cpu_has_apic) return -ENODEV; @@ -790,13 +785,11 @@ int __init op_nmi_init(struct oprofile_operations *ops) if (ret) return ret; - using_nmi = 1; printk(KERN_INFO "oprofile: using NMI interrupt.\n"); return 0; } void op_nmi_exit(void) { - if (using_nmi) - exit_sysfs(); + exit_sysfs(); } diff --git a/arch/x86/oprofile/op_model_amd.c b/arch/x86/oprofile/op_model_amd.c index b67a6b5aa8d4..42fb46f83883 100644 --- a/arch/x86/oprofile/op_model_amd.c +++ b/arch/x86/oprofile/op_model_amd.c @@ -64,15 +64,22 @@ static u64 ibs_op_ctl; * IBS cpuid feature detection */ -#define IBS_CPUID_FEATURES 0x8000001b +#define IBS_CPUID_FEATURES 0x8000001b /* * Same bit mask as for IBS cpuid feature flags (Fn8000_001B_EAX), but * bit 0 is used to indicate the existence of IBS. */ -#define IBS_CAPS_AVAIL (1LL<<0) -#define IBS_CAPS_RDWROPCNT (1LL<<3) -#define IBS_CAPS_OPCNT (1LL<<4) +#define IBS_CAPS_AVAIL (1U<<0) +#define IBS_CAPS_RDWROPCNT (1U<<3) +#define IBS_CAPS_OPCNT (1U<<4) + +/* + * IBS APIC setup + */ +#define IBSCTL 0x1cc +#define IBSCTL_LVT_OFFSET_VALID (1ULL<<8) +#define IBSCTL_LVT_OFFSET_MASK 0x0F /* * IBS randomization macros @@ -266,6 +273,74 @@ static void op_amd_stop_ibs(void) wrmsrl(MSR_AMD64_IBSOPCTL, 0); } +static inline int eilvt_is_available(int offset) +{ + /* check if we may assign a vector */ + return !setup_APIC_eilvt(offset, 0, APIC_EILVT_MSG_NMI, 1); +} + +static inline int ibs_eilvt_valid(void) +{ + u64 val; + int offset; + + rdmsrl(MSR_AMD64_IBSCTL, val); + if (!(val & IBSCTL_LVT_OFFSET_VALID)) { + pr_err(FW_BUG "cpu %d, invalid IBS " + "interrupt offset %d (MSR%08X=0x%016llx)", + smp_processor_id(), offset, + MSR_AMD64_IBSCTL, val); + return 0; + } + + offset = val & IBSCTL_LVT_OFFSET_MASK; + + if (eilvt_is_available(offset)) + return !0; + + pr_err(FW_BUG "cpu %d, IBS interrupt offset %d " + "not available (MSR%08X=0x%016llx)", + smp_processor_id(), offset, + MSR_AMD64_IBSCTL, val); + + return 0; +} + +static inline int get_ibs_offset(void) +{ + u64 val; + + rdmsrl(MSR_AMD64_IBSCTL, val); + if (!(val & IBSCTL_LVT_OFFSET_VALID)) + return -EINVAL; + + return val & IBSCTL_LVT_OFFSET_MASK; +} + +static void setup_APIC_ibs(void) +{ + int offset; + + offset = get_ibs_offset(); + if (offset < 0) + goto failed; + + if (!setup_APIC_eilvt(offset, 0, APIC_EILVT_MSG_NMI, 0)) + return; +failed: + pr_warn("oprofile: IBS APIC setup failed on cpu #%d\n", + smp_processor_id()); +} + +static void clear_APIC_ibs(void) +{ + int offset; + + offset = get_ibs_offset(); + if (offset >= 0) + setup_APIC_eilvt(offset, 0, APIC_EILVT_MSG_FIX, 1); +} + #ifdef CONFIG_OPROFILE_EVENT_MULTIPLEX static void op_mux_switch_ctrl(struct op_x86_model_spec const *model, @@ -376,13 +451,13 @@ static void op_amd_setup_ctrs(struct op_x86_model_spec const *model, } if (ibs_caps) - setup_APIC_eilvt_ibs(0, APIC_EILVT_MSG_NMI, 0); + setup_APIC_ibs(); } static void op_amd_cpu_shutdown(void) { if (ibs_caps) - setup_APIC_eilvt_ibs(0, APIC_EILVT_MSG_FIX, 1); + clear_APIC_ibs(); } static int op_amd_check_ctrs(struct pt_regs * const regs, @@ -445,16 +520,11 @@ static void op_amd_stop(struct op_msrs const * const msrs) op_amd_stop_ibs(); } -static int __init_ibs_nmi(void) +static int setup_ibs_ctl(int ibs_eilvt_off) { -#define IBSCTL_LVTOFFSETVAL (1 << 8) -#define IBSCTL 0x1cc struct pci_dev *cpu_cfg; int nodes; u32 value = 0; - u8 ibs_eilvt_off; - - ibs_eilvt_off = setup_APIC_eilvt_ibs(0, APIC_EILVT_MSG_FIX, 1); nodes = 0; cpu_cfg = NULL; @@ -466,21 +536,60 @@ static int __init_ibs_nmi(void) break; ++nodes; pci_write_config_dword(cpu_cfg, IBSCTL, ibs_eilvt_off - | IBSCTL_LVTOFFSETVAL); + | IBSCTL_LVT_OFFSET_VALID); pci_read_config_dword(cpu_cfg, IBSCTL, &value); - if (value != (ibs_eilvt_off | IBSCTL_LVTOFFSETVAL)) { + if (value != (ibs_eilvt_off | IBSCTL_LVT_OFFSET_VALID)) { pci_dev_put(cpu_cfg); printk(KERN_DEBUG "Failed to setup IBS LVT offset, " - "IBSCTL = 0x%08x", value); - return 1; + "IBSCTL = 0x%08x\n", value); + return -EINVAL; } } while (1); if (!nodes) { - printk(KERN_DEBUG "No CPU node configured for IBS"); - return 1; + printk(KERN_DEBUG "No CPU node configured for IBS\n"); + return -ENODEV; + } + + return 0; +} + +static int force_ibs_eilvt_setup(void) +{ + int i; + int ret; + + /* find the next free available EILVT entry */ + for (i = 1; i < 4; i++) { + if (!eilvt_is_available(i)) + continue; + ret = setup_ibs_ctl(i); + if (ret) + return ret; + return 0; } + printk(KERN_DEBUG "No EILVT entry available\n"); + + return -EBUSY; +} + +static int __init_ibs_nmi(void) +{ + int ret; + + if (ibs_eilvt_valid()) + return 0; + + ret = force_ibs_eilvt_setup(); + if (ret) + return ret; + + if (!ibs_eilvt_valid()) + return -EFAULT; + + pr_err(FW_BUG "workaround enabled for IBS LVT offset\n"); + return 0; } diff --git a/arch/x86/pci/olpc.c b/arch/x86/pci/olpc.c index b34815408f58..13700ec8e2e4 100644 --- a/arch/x86/pci/olpc.c +++ b/arch/x86/pci/olpc.c @@ -304,7 +304,7 @@ static struct pci_raw_ops pci_olpc_conf = { int __init pci_olpc_init(void) { - printk(KERN_INFO "PCI: Using configuration type OLPC\n"); + printk(KERN_INFO "PCI: Using configuration type OLPC XO-1\n"); raw_pci_ops = &pci_olpc_conf; is_lx = is_geode_lx(); return 0; diff --git a/arch/x86/xen/mmu.c b/arch/x86/xen/mmu.c index 42086ac406af..b2363fcbcd0f 100644 --- a/arch/x86/xen/mmu.c +++ b/arch/x86/xen/mmu.c @@ -1969,7 +1969,6 @@ static const struct pv_mmu_ops xen_mmu_ops __initdata = { .alloc_pte = xen_alloc_pte_init, .release_pte = xen_release_pte_init, .alloc_pmd = xen_alloc_pmd_init, - .alloc_pmd_clone = paravirt_nop, .release_pmd = xen_release_pmd_init, #ifdef CONFIG_X86_64 diff --git a/arch/x86/xen/pci-swiotlb-xen.c b/arch/x86/xen/pci-swiotlb-xen.c index a013ec9d0c54..22471001b74c 100644 --- a/arch/x86/xen/pci-swiotlb-xen.c +++ b/arch/x86/xen/pci-swiotlb-xen.c @@ -5,6 +5,7 @@ #include <asm/xen/hypervisor.h> #include <xen/xen.h> +#include <asm/iommu_table.h> int xen_swiotlb __read_mostly; @@ -56,3 +57,7 @@ void __init pci_xen_swiotlb_init(void) dma_ops = &xen_swiotlb_dma_ops; } } +IOMMU_INIT_FINISH(pci_xen_swiotlb_detect, + 0, + pci_xen_swiotlb_init, + 0); diff --git a/arch/x86/xen/spinlock.c b/arch/x86/xen/spinlock.c index e0500646585d..23e061b9327b 100644 --- a/arch/x86/xen/spinlock.c +++ b/arch/x86/xen/spinlock.c @@ -224,7 +224,7 @@ static noinline int xen_spin_lock_slow(struct arch_spinlock *lock, bool irq_enab goto out; } - flags = __raw_local_save_flags(); + flags = arch_local_save_flags(); if (irq_enable) { ADD_STATS(taken_slow_irqenable, 1); raw_local_irq_enable(); diff --git a/arch/xtensa/include/asm/irqflags.h b/arch/xtensa/include/asm/irqflags.h new file mode 100644 index 000000000000..dae9a8bdcb17 --- /dev/null +++ b/arch/xtensa/include/asm/irqflags.h @@ -0,0 +1,58 @@ +/* + * Xtensa IRQ flags handling functions + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (C) 2001 - 2005 Tensilica Inc. + */ + +#ifndef _XTENSA_IRQFLAGS_H +#define _XTENSA_IRQFLAGS_H + +#include <linux/types.h> + +static inline unsigned long arch_local_save_flags(void) +{ + unsigned long flags; + asm volatile("rsr %0,"__stringify(PS) : "=a" (flags)); + return flags; +} + +static inline unsigned long arch_local_irq_save(void) +{ + unsigned long flags; + asm volatile("rsil %0, "__stringify(LOCKLEVEL) + : "=a" (flags) :: "memory"); + return flags; +} + +static inline void arch_local_irq_disable(void) +{ + arch_local_irq_save(); +} + +static inline void arch_local_irq_enable(void) +{ + unsigned long flags; + asm volatile("rsil %0, 0" : "=a" (flags) :: "memory"); +} + +static inline void arch_local_irq_restore(unsigned long flags) +{ + asm volatile("wsr %0, "__stringify(PS)" ; rsync" + :: "a" (flags) : "memory"); +} + +static inline bool arch_irqs_disabled_flags(unsigned long flags) +{ + return (flags & 0xf) != 0; +} + +static inline bool arch_irqs_disabled(void) +{ + return arch_irqs_disabled_flags(arch_local_save_flags()); +} + +#endif /* _XTENSA_IRQFLAGS_H */ diff --git a/arch/xtensa/include/asm/system.h b/arch/xtensa/include/asm/system.h index 62b1e8f3c13c..1e7e09ab6cd7 100644 --- a/arch/xtensa/include/asm/system.h +++ b/arch/xtensa/include/asm/system.h @@ -12,41 +12,10 @@ #define _XTENSA_SYSTEM_H #include <linux/stringify.h> +#include <linux/irqflags.h> #include <asm/processor.h> -/* interrupt control */ - -#define local_save_flags(x) \ - __asm__ __volatile__ ("rsr %0,"__stringify(PS) : "=a" (x)); -#define local_irq_restore(x) do { \ - __asm__ __volatile__ ("wsr %0, "__stringify(PS)" ; rsync" \ - :: "a" (x) : "memory"); } while(0); -#define local_irq_save(x) do { \ - __asm__ __volatile__ ("rsil %0, "__stringify(LOCKLEVEL) \ - : "=a" (x) :: "memory");} while(0); - -static inline void local_irq_disable(void) -{ - unsigned long flags; - __asm__ __volatile__ ("rsil %0, "__stringify(LOCKLEVEL) - : "=a" (flags) :: "memory"); -} -static inline void local_irq_enable(void) -{ - unsigned long flags; - __asm__ __volatile__ ("rsil %0, 0" : "=a" (flags) :: "memory"); - -} - -static inline int irqs_disabled(void) -{ - unsigned long flags; - local_save_flags(flags); - return flags & 0xf; -} - - #define smp_read_barrier_depends() do { } while(0) #define read_barrier_depends() do { } while(0) diff --git a/arch/xtensa/kernel/irq.c b/arch/xtensa/kernel/irq.c index c64a5d387de5..87508886cbbd 100644 --- a/arch/xtensa/kernel/irq.c +++ b/arch/xtensa/kernel/irq.c @@ -92,7 +92,7 @@ int show_interrupts(struct seq_file *p, void *v) for_each_online_cpu(j) seq_printf(p, "%10u ", kstat_irqs_cpu(i, j)); #endif - seq_printf(p, " %14s", irq_desc[i].chip->typename); + seq_printf(p, " %14s", irq_desc[i].chip->name); seq_printf(p, " %s", action->name); for (action=action->next; action; action = action->next) diff --git a/block/bsg.c b/block/bsg.c index 82d58829ba59..0c00870553a3 100644 --- a/block/bsg.c +++ b/block/bsg.c @@ -426,7 +426,7 @@ static int blk_complete_sgv4_hdr_rq(struct request *rq, struct sg_io_v4 *hdr, /* * fill in all the output members */ - hdr->device_status = status_byte(rq->errors); + hdr->device_status = rq->errors & 0xff; hdr->transport_status = host_byte(rq->errors); hdr->driver_status = driver_byte(rq->errors); hdr->info = 0; diff --git a/crypto/des_generic.c b/crypto/des_generic.c index 249f903cc453..873818d48e86 100644 --- a/crypto/des_generic.c +++ b/crypto/des_generic.c @@ -614,7 +614,7 @@ static const u32 S8[64] = { #define T3(x) pt[2 * (x) + 2] #define T4(x) pt[2 * (x) + 3] -#define PC2(a, b, c, d) (T4(d) | T3(c) | T2(b) | T1(a)) +#define DES_PC2(a, b, c, d) (T4(d) | T3(c) | T2(b) | T1(a)) /* * Encryption key expansion @@ -639,22 +639,22 @@ unsigned long des_ekey(u32 *pe, const u8 *k) b = k[6]; b &= 0x0e; b <<= 4; b |= k[2] & 0x1e; b = pc1[b]; a = k[7]; a &= 0x0e; a <<= 4; a |= k[3] & 0x1e; a = pc1[a]; - pe[15 * 2 + 0] = PC2(a, b, c, d); d = rs[d]; - pe[14 * 2 + 0] = PC2(d, a, b, c); c = rs[c]; b = rs[b]; - pe[13 * 2 + 0] = PC2(b, c, d, a); a = rs[a]; d = rs[d]; - pe[12 * 2 + 0] = PC2(d, a, b, c); c = rs[c]; b = rs[b]; - pe[11 * 2 + 0] = PC2(b, c, d, a); a = rs[a]; d = rs[d]; - pe[10 * 2 + 0] = PC2(d, a, b, c); c = rs[c]; b = rs[b]; - pe[ 9 * 2 + 0] = PC2(b, c, d, a); a = rs[a]; d = rs[d]; - pe[ 8 * 2 + 0] = PC2(d, a, b, c); c = rs[c]; - pe[ 7 * 2 + 0] = PC2(c, d, a, b); b = rs[b]; a = rs[a]; - pe[ 6 * 2 + 0] = PC2(a, b, c, d); d = rs[d]; c = rs[c]; - pe[ 5 * 2 + 0] = PC2(c, d, a, b); b = rs[b]; a = rs[a]; - pe[ 4 * 2 + 0] = PC2(a, b, c, d); d = rs[d]; c = rs[c]; - pe[ 3 * 2 + 0] = PC2(c, d, a, b); b = rs[b]; a = rs[a]; - pe[ 2 * 2 + 0] = PC2(a, b, c, d); d = rs[d]; c = rs[c]; - pe[ 1 * 2 + 0] = PC2(c, d, a, b); b = rs[b]; - pe[ 0 * 2 + 0] = PC2(b, c, d, a); + pe[15 * 2 + 0] = DES_PC2(a, b, c, d); d = rs[d]; + pe[14 * 2 + 0] = DES_PC2(d, a, b, c); c = rs[c]; b = rs[b]; + pe[13 * 2 + 0] = DES_PC2(b, c, d, a); a = rs[a]; d = rs[d]; + pe[12 * 2 + 0] = DES_PC2(d, a, b, c); c = rs[c]; b = rs[b]; + pe[11 * 2 + 0] = DES_PC2(b, c, d, a); a = rs[a]; d = rs[d]; + pe[10 * 2 + 0] = DES_PC2(d, a, b, c); c = rs[c]; b = rs[b]; + pe[ 9 * 2 + 0] = DES_PC2(b, c, d, a); a = rs[a]; d = rs[d]; + pe[ 8 * 2 + 0] = DES_PC2(d, a, b, c); c = rs[c]; + pe[ 7 * 2 + 0] = DES_PC2(c, d, a, b); b = rs[b]; a = rs[a]; + pe[ 6 * 2 + 0] = DES_PC2(a, b, c, d); d = rs[d]; c = rs[c]; + pe[ 5 * 2 + 0] = DES_PC2(c, d, a, b); b = rs[b]; a = rs[a]; + pe[ 4 * 2 + 0] = DES_PC2(a, b, c, d); d = rs[d]; c = rs[c]; + pe[ 3 * 2 + 0] = DES_PC2(c, d, a, b); b = rs[b]; a = rs[a]; + pe[ 2 * 2 + 0] = DES_PC2(a, b, c, d); d = rs[d]; c = rs[c]; + pe[ 1 * 2 + 0] = DES_PC2(c, d, a, b); b = rs[b]; + pe[ 0 * 2 + 0] = DES_PC2(b, c, d, a); /* Check if first half is weak */ w = (a ^ c) | (b ^ d) | (rs[a] ^ c) | (b ^ rs[d]); @@ -670,22 +670,22 @@ unsigned long des_ekey(u32 *pe, const u8 *k) /* Check if second half is weak */ w |= (a ^ c) | (b ^ d) | (rs[a] ^ c) | (b ^ rs[d]); - pe[15 * 2 + 1] = PC2(a, b, c, d); d = rs[d]; - pe[14 * 2 + 1] = PC2(d, a, b, c); c = rs[c]; b = rs[b]; - pe[13 * 2 + 1] = PC2(b, c, d, a); a = rs[a]; d = rs[d]; - pe[12 * 2 + 1] = PC2(d, a, b, c); c = rs[c]; b = rs[b]; - pe[11 * 2 + 1] = PC2(b, c, d, a); a = rs[a]; d = rs[d]; - pe[10 * 2 + 1] = PC2(d, a, b, c); c = rs[c]; b = rs[b]; - pe[ 9 * 2 + 1] = PC2(b, c, d, a); a = rs[a]; d = rs[d]; - pe[ 8 * 2 + 1] = PC2(d, a, b, c); c = rs[c]; - pe[ 7 * 2 + 1] = PC2(c, d, a, b); b = rs[b]; a = rs[a]; - pe[ 6 * 2 + 1] = PC2(a, b, c, d); d = rs[d]; c = rs[c]; - pe[ 5 * 2 + 1] = PC2(c, d, a, b); b = rs[b]; a = rs[a]; - pe[ 4 * 2 + 1] = PC2(a, b, c, d); d = rs[d]; c = rs[c]; - pe[ 3 * 2 + 1] = PC2(c, d, a, b); b = rs[b]; a = rs[a]; - pe[ 2 * 2 + 1] = PC2(a, b, c, d); d = rs[d]; c = rs[c]; - pe[ 1 * 2 + 1] = PC2(c, d, a, b); b = rs[b]; - pe[ 0 * 2 + 1] = PC2(b, c, d, a); + pe[15 * 2 + 1] = DES_PC2(a, b, c, d); d = rs[d]; + pe[14 * 2 + 1] = DES_PC2(d, a, b, c); c = rs[c]; b = rs[b]; + pe[13 * 2 + 1] = DES_PC2(b, c, d, a); a = rs[a]; d = rs[d]; + pe[12 * 2 + 1] = DES_PC2(d, a, b, c); c = rs[c]; b = rs[b]; + pe[11 * 2 + 1] = DES_PC2(b, c, d, a); a = rs[a]; d = rs[d]; + pe[10 * 2 + 1] = DES_PC2(d, a, b, c); c = rs[c]; b = rs[b]; + pe[ 9 * 2 + 1] = DES_PC2(b, c, d, a); a = rs[a]; d = rs[d]; + pe[ 8 * 2 + 1] = DES_PC2(d, a, b, c); c = rs[c]; + pe[ 7 * 2 + 1] = DES_PC2(c, d, a, b); b = rs[b]; a = rs[a]; + pe[ 6 * 2 + 1] = DES_PC2(a, b, c, d); d = rs[d]; c = rs[c]; + pe[ 5 * 2 + 1] = DES_PC2(c, d, a, b); b = rs[b]; a = rs[a]; + pe[ 4 * 2 + 1] = DES_PC2(a, b, c, d); d = rs[d]; c = rs[c]; + pe[ 3 * 2 + 1] = DES_PC2(c, d, a, b); b = rs[b]; a = rs[a]; + pe[ 2 * 2 + 1] = DES_PC2(a, b, c, d); d = rs[d]; c = rs[c]; + pe[ 1 * 2 + 1] = DES_PC2(c, d, a, b); b = rs[b]; + pe[ 0 * 2 + 1] = DES_PC2(b, c, d, a); /* Fixup: 2413 5768 -> 1357 2468 */ for (d = 0; d < 16; ++d) { @@ -722,22 +722,22 @@ static void dkey(u32 *pe, const u8 *k) b = k[6]; b &= 0x0e; b <<= 4; b |= k[2] & 0x1e; b = pc1[b]; a = k[7]; a &= 0x0e; a <<= 4; a |= k[3] & 0x1e; a = pc1[a]; - pe[ 0 * 2] = PC2(a, b, c, d); d = rs[d]; - pe[ 1 * 2] = PC2(d, a, b, c); c = rs[c]; b = rs[b]; - pe[ 2 * 2] = PC2(b, c, d, a); a = rs[a]; d = rs[d]; - pe[ 3 * 2] = PC2(d, a, b, c); c = rs[c]; b = rs[b]; - pe[ 4 * 2] = PC2(b, c, d, a); a = rs[a]; d = rs[d]; - pe[ 5 * 2] = PC2(d, a, b, c); c = rs[c]; b = rs[b]; - pe[ 6 * 2] = PC2(b, c, d, a); a = rs[a]; d = rs[d]; - pe[ 7 * 2] = PC2(d, a, b, c); c = rs[c]; - pe[ 8 * 2] = PC2(c, d, a, b); b = rs[b]; a = rs[a]; - pe[ 9 * 2] = PC2(a, b, c, d); d = rs[d]; c = rs[c]; - pe[10 * 2] = PC2(c, d, a, b); b = rs[b]; a = rs[a]; - pe[11 * 2] = PC2(a, b, c, d); d = rs[d]; c = rs[c]; - pe[12 * 2] = PC2(c, d, a, b); b = rs[b]; a = rs[a]; - pe[13 * 2] = PC2(a, b, c, d); d = rs[d]; c = rs[c]; - pe[14 * 2] = PC2(c, d, a, b); b = rs[b]; - pe[15 * 2] = PC2(b, c, d, a); + pe[ 0 * 2] = DES_PC2(a, b, c, d); d = rs[d]; + pe[ 1 * 2] = DES_PC2(d, a, b, c); c = rs[c]; b = rs[b]; + pe[ 2 * 2] = DES_PC2(b, c, d, a); a = rs[a]; d = rs[d]; + pe[ 3 * 2] = DES_PC2(d, a, b, c); c = rs[c]; b = rs[b]; + pe[ 4 * 2] = DES_PC2(b, c, d, a); a = rs[a]; d = rs[d]; + pe[ 5 * 2] = DES_PC2(d, a, b, c); c = rs[c]; b = rs[b]; + pe[ 6 * 2] = DES_PC2(b, c, d, a); a = rs[a]; d = rs[d]; + pe[ 7 * 2] = DES_PC2(d, a, b, c); c = rs[c]; + pe[ 8 * 2] = DES_PC2(c, d, a, b); b = rs[b]; a = rs[a]; + pe[ 9 * 2] = DES_PC2(a, b, c, d); d = rs[d]; c = rs[c]; + pe[10 * 2] = DES_PC2(c, d, a, b); b = rs[b]; a = rs[a]; + pe[11 * 2] = DES_PC2(a, b, c, d); d = rs[d]; c = rs[c]; + pe[12 * 2] = DES_PC2(c, d, a, b); b = rs[b]; a = rs[a]; + pe[13 * 2] = DES_PC2(a, b, c, d); d = rs[d]; c = rs[c]; + pe[14 * 2] = DES_PC2(c, d, a, b); b = rs[b]; + pe[15 * 2] = DES_PC2(b, c, d, a); /* Skip to next table set */ pt += 512; @@ -747,22 +747,22 @@ static void dkey(u32 *pe, const u8 *k) b = k[2]; b &= 0xe0; b >>= 4; b |= k[6] & 0xf0; b = pc1[b + 1]; a = k[3]; a &= 0xe0; a >>= 4; a |= k[7] & 0xf0; a = pc1[a + 1]; - pe[ 0 * 2 + 1] = PC2(a, b, c, d); d = rs[d]; - pe[ 1 * 2 + 1] = PC2(d, a, b, c); c = rs[c]; b = rs[b]; - pe[ 2 * 2 + 1] = PC2(b, c, d, a); a = rs[a]; d = rs[d]; - pe[ 3 * 2 + 1] = PC2(d, a, b, c); c = rs[c]; b = rs[b]; - pe[ 4 * 2 + 1] = PC2(b, c, d, a); a = rs[a]; d = rs[d]; - pe[ 5 * 2 + 1] = PC2(d, a, b, c); c = rs[c]; b = rs[b]; - pe[ 6 * 2 + 1] = PC2(b, c, d, a); a = rs[a]; d = rs[d]; - pe[ 7 * 2 + 1] = PC2(d, a, b, c); c = rs[c]; - pe[ 8 * 2 + 1] = PC2(c, d, a, b); b = rs[b]; a = rs[a]; - pe[ 9 * 2 + 1] = PC2(a, b, c, d); d = rs[d]; c = rs[c]; - pe[10 * 2 + 1] = PC2(c, d, a, b); b = rs[b]; a = rs[a]; - pe[11 * 2 + 1] = PC2(a, b, c, d); d = rs[d]; c = rs[c]; - pe[12 * 2 + 1] = PC2(c, d, a, b); b = rs[b]; a = rs[a]; - pe[13 * 2 + 1] = PC2(a, b, c, d); d = rs[d]; c = rs[c]; - pe[14 * 2 + 1] = PC2(c, d, a, b); b = rs[b]; - pe[15 * 2 + 1] = PC2(b, c, d, a); + pe[ 0 * 2 + 1] = DES_PC2(a, b, c, d); d = rs[d]; + pe[ 1 * 2 + 1] = DES_PC2(d, a, b, c); c = rs[c]; b = rs[b]; + pe[ 2 * 2 + 1] = DES_PC2(b, c, d, a); a = rs[a]; d = rs[d]; + pe[ 3 * 2 + 1] = DES_PC2(d, a, b, c); c = rs[c]; b = rs[b]; + pe[ 4 * 2 + 1] = DES_PC2(b, c, d, a); a = rs[a]; d = rs[d]; + pe[ 5 * 2 + 1] = DES_PC2(d, a, b, c); c = rs[c]; b = rs[b]; + pe[ 6 * 2 + 1] = DES_PC2(b, c, d, a); a = rs[a]; d = rs[d]; + pe[ 7 * 2 + 1] = DES_PC2(d, a, b, c); c = rs[c]; + pe[ 8 * 2 + 1] = DES_PC2(c, d, a, b); b = rs[b]; a = rs[a]; + pe[ 9 * 2 + 1] = DES_PC2(a, b, c, d); d = rs[d]; c = rs[c]; + pe[10 * 2 + 1] = DES_PC2(c, d, a, b); b = rs[b]; a = rs[a]; + pe[11 * 2 + 1] = DES_PC2(a, b, c, d); d = rs[d]; c = rs[c]; + pe[12 * 2 + 1] = DES_PC2(c, d, a, b); b = rs[b]; a = rs[a]; + pe[13 * 2 + 1] = DES_PC2(a, b, c, d); d = rs[d]; c = rs[c]; + pe[14 * 2 + 1] = DES_PC2(c, d, a, b); b = rs[b]; + pe[15 * 2 + 1] = DES_PC2(b, c, d, a); /* Fixup: 2413 5768 -> 1357 2468 */ for (d = 0; d < 16; ++d) { diff --git a/drivers/acpi/acpi_pad.c b/drivers/acpi/acpi_pad.c index 6b115f6c4313..6afceb3d4034 100644 --- a/drivers/acpi/acpi_pad.c +++ b/drivers/acpi/acpi_pad.c @@ -30,18 +30,13 @@ #include <linux/slab.h> #include <acpi/acpi_bus.h> #include <acpi/acpi_drivers.h> +#include <asm/mwait.h> #define ACPI_PROCESSOR_AGGREGATOR_CLASS "acpi_pad" #define ACPI_PROCESSOR_AGGREGATOR_DEVICE_NAME "Processor Aggregator" #define ACPI_PROCESSOR_AGGREGATOR_NOTIFY 0x80 static DEFINE_MUTEX(isolated_cpus_lock); -#define MWAIT_SUBSTATE_MASK (0xf) -#define MWAIT_CSTATE_MASK (0xf) -#define MWAIT_SUBSTATE_SIZE (4) -#define CPUID_MWAIT_LEAF (5) -#define CPUID5_ECX_EXTENSIONS_SUPPORTED (0x1) -#define CPUID5_ECX_INTERRUPT_BREAK (0x2) static unsigned long power_saving_mwait_eax; static unsigned char tsc_detected_unstable; diff --git a/drivers/ata/pata_pcmcia.c b/drivers/ata/pata_pcmcia.c index e944aa0c5517..806292160b3f 100644 --- a/drivers/ata/pata_pcmcia.c +++ b/drivers/ata/pata_pcmcia.c @@ -34,7 +34,6 @@ #include <linux/ata.h> #include <linux/libata.h> -#include <pcmcia/cs.h> #include <pcmcia/cistpl.h> #include <pcmcia/ds.h> #include <pcmcia/cisreg.h> @@ -168,63 +167,26 @@ static struct ata_port_operations pcmcia_8bit_port_ops = { }; -struct pcmcia_config_check { - unsigned long ctl_base; - int skip_vcc; - int is_kme; -}; - -static int pcmcia_check_one_config(struct pcmcia_device *pdev, - cistpl_cftable_entry_t *cfg, - cistpl_cftable_entry_t *dflt, - unsigned int vcc, - void *priv_data) +static int pcmcia_check_one_config(struct pcmcia_device *pdev, void *priv_data) { - struct pcmcia_config_check *stk = priv_data; - - /* Check for matching Vcc, unless we're desperate */ - if (!stk->skip_vcc) { - if (cfg->vcc.present & (1 << CISTPL_POWER_VNOM)) { - if (vcc != cfg->vcc.param[CISTPL_POWER_VNOM] / 10000) - return -ENODEV; - } else if (dflt->vcc.present & (1 << CISTPL_POWER_VNOM)) { - if (vcc != dflt->vcc.param[CISTPL_POWER_VNOM] / 10000) - return -ENODEV; - } + int *is_kme = priv_data; + + if (!(pdev->resource[0]->flags & IO_DATA_PATH_WIDTH_8)) { + pdev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH; + pdev->resource[0]->flags |= IO_DATA_PATH_WIDTH_AUTO; } + pdev->resource[1]->flags &= ~IO_DATA_PATH_WIDTH; + pdev->resource[1]->flags |= IO_DATA_PATH_WIDTH_8; - if (cfg->vpp1.present & (1 << CISTPL_POWER_VNOM)) - pdev->conf.Vpp = cfg->vpp1.param[CISTPL_POWER_VNOM] / 10000; - else if (dflt->vpp1.present & (1 << CISTPL_POWER_VNOM)) - pdev->conf.Vpp = dflt->vpp1.param[CISTPL_POWER_VNOM] / 10000; - - if ((cfg->io.nwin > 0) || (dflt->io.nwin > 0)) { - cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &dflt->io; - pdev->io_lines = io->flags & CISTPL_IO_LINES_MASK; - pdev->resource[0]->start = io->win[0].base; - if (!(io->flags & CISTPL_IO_16BIT)) { - pdev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH; - pdev->resource[0]->flags |= IO_DATA_PATH_WIDTH_8; - } - if (io->nwin == 2) { - pdev->resource[0]->end = 8; - pdev->resource[1]->start = io->win[1].base; - pdev->resource[1]->end = (stk->is_kme) ? 2 : 1; - if (pcmcia_request_io(pdev) != 0) - return -ENODEV; - stk->ctl_base = pdev->resource[1]->start; - } else if ((io->nwin == 1) && (io->win[0].len >= 16)) { - pdev->resource[0]->end = io->win[0].len; - pdev->resource[1]->end = 0; - if (pcmcia_request_io(pdev) != 0) - return -ENODEV; - stk->ctl_base = pdev->resource[0]->start + 0x0e; - } else + if (pdev->resource[1]->end) { + pdev->resource[0]->end = 8; + pdev->resource[1]->end = (*is_kme) ? 2 : 1; + } else { + if (pdev->resource[0]->end < 16) return -ENODEV; - /* If we've got this far, we're done */ - return 0; } - return -ENODEV; + + return pcmcia_request_io(pdev); } /** @@ -239,7 +201,6 @@ static int pcmcia_init_one(struct pcmcia_device *pdev) { struct ata_host *host; struct ata_port *ap; - struct pcmcia_config_check *stk = NULL; int is_kme = 0, ret = -ENOMEM, p; unsigned long io_base, ctl_base; void __iomem *io_addr, *ctl_addr; @@ -247,10 +208,8 @@ static int pcmcia_init_one(struct pcmcia_device *pdev) struct ata_port_operations *ops = &pcmcia_port_ops; /* Set up attributes in order to probe card and get resources */ - pdev->resource[0]->flags |= IO_DATA_PATH_WIDTH_AUTO; - pdev->resource[1]->flags |= IO_DATA_PATH_WIDTH_8; - pdev->conf.Attributes = CONF_ENABLE_IRQ; - pdev->conf.IntType = INT_MEMORY_AND_IO; + pdev->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_IO | + CONF_AUTO_SET_VPP | CONF_AUTO_CHECK_VCC; /* See if we have a manufacturer identifier. Use it to set is_kme for vendor quirks */ @@ -258,25 +217,21 @@ static int pcmcia_init_one(struct pcmcia_device *pdev) ((pdev->card_id == PRODID_KME_KXLC005_A) || (pdev->card_id == PRODID_KME_KXLC005_B))); - /* Allocate resoure probing structures */ - - stk = kzalloc(sizeof(*stk), GFP_KERNEL); - if (!stk) - goto out1; - stk->is_kme = is_kme; - stk->skip_vcc = io_base = ctl_base = 0; - - if (pcmcia_loop_config(pdev, pcmcia_check_one_config, stk)) { - stk->skip_vcc = 1; - if (pcmcia_loop_config(pdev, pcmcia_check_one_config, stk)) + if (pcmcia_loop_config(pdev, pcmcia_check_one_config, &is_kme)) { + pdev->config_flags &= ~CONF_AUTO_CHECK_VCC; + if (pcmcia_loop_config(pdev, pcmcia_check_one_config, &is_kme)) goto failed; /* No suitable config found */ } io_base = pdev->resource[0]->start; - ctl_base = stk->ctl_base; + if (pdev->resource[1]->end) + ctl_base = pdev->resource[1]->start; + else + ctl_base = pdev->resource[0]->start + 0x0e; + if (!pdev->irq) goto failed; - ret = pcmcia_request_configuration(pdev, &pdev->conf); + ret = pcmcia_enable_device(pdev); if (ret) goto failed; @@ -329,13 +284,10 @@ static int pcmcia_init_one(struct pcmcia_device *pdev) goto failed; pdev->priv = host; - kfree(stk); return 0; failed: - kfree(stk); pcmcia_disable_device(pdev); -out1: return ret; } @@ -430,9 +382,7 @@ MODULE_DEVICE_TABLE(pcmcia, pcmcia_devices); static struct pcmcia_driver pcmcia_driver = { .owner = THIS_MODULE, - .drv = { - .name = DRV_NAME, - }, + .name = DRV_NAME, .id_table = pcmcia_devices, .probe = pcmcia_init_one, .remove = pcmcia_remove_one, diff --git a/drivers/base/power/Makefile b/drivers/base/power/Makefile index cbccf9a3cee4..abe46edfe5b4 100644 --- a/drivers/base/power/Makefile +++ b/drivers/base/power/Makefile @@ -3,6 +3,7 @@ obj-$(CONFIG_PM_SLEEP) += main.o wakeup.o obj-$(CONFIG_PM_RUNTIME) += runtime.o obj-$(CONFIG_PM_OPS) += generic_ops.o obj-$(CONFIG_PM_TRACE_RTC) += trace.o +obj-$(CONFIG_PM_OPP) += opp.o ccflags-$(CONFIG_DEBUG_DRIVER) := -DDEBUG ccflags-$(CONFIG_PM_VERBOSE) += -DDEBUG diff --git a/drivers/base/power/generic_ops.c b/drivers/base/power/generic_ops.c index 4b29d4981253..81f2c84697f4 100644 --- a/drivers/base/power/generic_ops.c +++ b/drivers/base/power/generic_ops.c @@ -46,7 +46,7 @@ int pm_generic_runtime_suspend(struct device *dev) const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL; int ret; - ret = pm && pm->runtime_suspend ? pm->runtime_suspend(dev) : -EINVAL; + ret = pm && pm->runtime_suspend ? pm->runtime_suspend(dev) : 0; return ret; } @@ -65,7 +65,7 @@ int pm_generic_runtime_resume(struct device *dev) const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL; int ret; - ret = pm && pm->runtime_resume ? pm->runtime_resume(dev) : -EINVAL; + ret = pm && pm->runtime_resume ? pm->runtime_resume(dev) : 0; return ret; } diff --git a/drivers/base/power/main.c b/drivers/base/power/main.c index 276d5a701dc3..31b526661ec4 100644 --- a/drivers/base/power/main.c +++ b/drivers/base/power/main.c @@ -51,6 +51,8 @@ static pm_message_t pm_transition; */ static bool transition_started; +static int async_error; + /** * device_pm_init - Initialize the PM-related part of a device object. * @dev: Device object being initialized. @@ -60,7 +62,8 @@ void device_pm_init(struct device *dev) dev->power.status = DPM_ON; init_completion(&dev->power.completion); complete_all(&dev->power.completion); - dev->power.wakeup_count = 0; + dev->power.wakeup = NULL; + spin_lock_init(&dev->power.lock); pm_runtime_init(dev); } @@ -120,6 +123,7 @@ void device_pm_remove(struct device *dev) mutex_lock(&dpm_list_mtx); list_del_init(&dev->power.entry); mutex_unlock(&dpm_list_mtx); + device_wakeup_disable(dev); pm_runtime_remove(dev); } @@ -407,7 +411,7 @@ static void pm_dev_err(struct device *dev, pm_message_t state, char *info, static void dpm_show_time(ktime_t starttime, pm_message_t state, char *info) { ktime_t calltime; - s64 usecs64; + u64 usecs64; int usecs; calltime = ktime_get(); @@ -600,6 +604,7 @@ static void dpm_resume(pm_message_t state) INIT_LIST_HEAD(&list); mutex_lock(&dpm_list_mtx); pm_transition = state; + async_error = 0; list_for_each_entry(dev, &dpm_list, power.entry) { if (dev->power.status < DPM_OFF) @@ -829,8 +834,6 @@ static int legacy_suspend(struct device *dev, pm_message_t state, return error; } -static int async_error; - /** * device_suspend - Execute "suspend" callbacks for given device. * @dev: Device to handle. @@ -885,6 +888,9 @@ static int __device_suspend(struct device *dev, pm_message_t state, bool async) device_unlock(dev); complete_all(&dev->power.completion); + if (error) + async_error = error; + return error; } @@ -894,10 +900,8 @@ static void async_suspend(void *data, async_cookie_t cookie) int error; error = __device_suspend(dev, pm_transition, true); - if (error) { + if (error) pm_dev_err(dev, pm_transition, " async", error); - async_error = error; - } put_device(dev); } @@ -1085,8 +1089,9 @@ EXPORT_SYMBOL_GPL(__suspend_report_result); * @dev: Device to wait for. * @subordinate: Device that needs to wait for @dev. */ -void device_pm_wait_for_dev(struct device *subordinate, struct device *dev) +int device_pm_wait_for_dev(struct device *subordinate, struct device *dev) { dpm_wait(dev, subordinate->power.async_suspend); + return async_error; } EXPORT_SYMBOL_GPL(device_pm_wait_for_dev); diff --git a/drivers/base/power/opp.c b/drivers/base/power/opp.c new file mode 100644 index 000000000000..2bb9b4cf59d7 --- /dev/null +++ b/drivers/base/power/opp.c @@ -0,0 +1,628 @@ +/* + * Generic OPP Interface + * + * Copyright (C) 2009-2010 Texas Instruments Incorporated. + * Nishanth Menon + * Romit Dasgupta + * Kevin Hilman + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include <linux/kernel.h> +#include <linux/errno.h> +#include <linux/err.h> +#include <linux/init.h> +#include <linux/slab.h> +#include <linux/cpufreq.h> +#include <linux/list.h> +#include <linux/rculist.h> +#include <linux/rcupdate.h> +#include <linux/opp.h> + +/* + * Internal data structure organization with the OPP layer library is as + * follows: + * dev_opp_list (root) + * |- device 1 (represents voltage domain 1) + * | |- opp 1 (availability, freq, voltage) + * | |- opp 2 .. + * ... ... + * | `- opp n .. + * |- device 2 (represents the next voltage domain) + * ... + * `- device m (represents mth voltage domain) + * device 1, 2.. are represented by dev_opp structure while each opp + * is represented by the opp structure. + */ + +/** + * struct opp - Generic OPP description structure + * @node: opp list node. The nodes are maintained throughout the lifetime + * of boot. It is expected only an optimal set of OPPs are + * added to the library by the SoC framework. + * RCU usage: opp list is traversed with RCU locks. node + * modification is possible realtime, hence the modifications + * are protected by the dev_opp_list_lock for integrity. + * IMPORTANT: the opp nodes should be maintained in increasing + * order. + * @available: true/false - marks if this OPP as available or not + * @rate: Frequency in hertz + * @u_volt: Nominal voltage in microvolts corresponding to this OPP + * @dev_opp: points back to the device_opp struct this opp belongs to + * + * This structure stores the OPP information for a given device. + */ +struct opp { + struct list_head node; + + bool available; + unsigned long rate; + unsigned long u_volt; + + struct device_opp *dev_opp; +}; + +/** + * struct device_opp - Device opp structure + * @node: list node - contains the devices with OPPs that + * have been registered. Nodes once added are not modified in this + * list. + * RCU usage: nodes are not modified in the list of device_opp, + * however addition is possible and is secured by dev_opp_list_lock + * @dev: device pointer + * @opp_list: list of opps + * + * This is an internal data structure maintaining the link to opps attached to + * a device. This structure is not meant to be shared to users as it is + * meant for book keeping and private to OPP library + */ +struct device_opp { + struct list_head node; + + struct device *dev; + struct list_head opp_list; +}; + +/* + * The root of the list of all devices. All device_opp structures branch off + * from here, with each device_opp containing the list of opp it supports in + * various states of availability. + */ +static LIST_HEAD(dev_opp_list); +/* Lock to allow exclusive modification to the device and opp lists */ +static DEFINE_MUTEX(dev_opp_list_lock); + +/** + * find_device_opp() - find device_opp struct using device pointer + * @dev: device pointer used to lookup device OPPs + * + * Search list of device OPPs for one containing matching device. Does a RCU + * reader operation to grab the pointer needed. + * + * Returns pointer to 'struct device_opp' if found, otherwise -ENODEV or + * -EINVAL based on type of error. + * + * Locking: This function must be called under rcu_read_lock(). device_opp + * is a RCU protected pointer. This means that device_opp is valid as long + * as we are under RCU lock. + */ +static struct device_opp *find_device_opp(struct device *dev) +{ + struct device_opp *tmp_dev_opp, *dev_opp = ERR_PTR(-ENODEV); + + if (unlikely(IS_ERR_OR_NULL(dev))) { + pr_err("%s: Invalid parameters\n", __func__); + return ERR_PTR(-EINVAL); + } + + list_for_each_entry_rcu(tmp_dev_opp, &dev_opp_list, node) { + if (tmp_dev_opp->dev == dev) { + dev_opp = tmp_dev_opp; + break; + } + } + + return dev_opp; +} + +/** + * opp_get_voltage() - Gets the voltage corresponding to an available opp + * @opp: opp for which voltage has to be returned for + * + * Return voltage in micro volt corresponding to the opp, else + * return 0 + * + * Locking: This function must be called under rcu_read_lock(). opp is a rcu + * protected pointer. This means that opp which could have been fetched by + * opp_find_freq_{exact,ceil,floor} functions is valid as long as we are + * under RCU lock. The pointer returned by the opp_find_freq family must be + * used in the same section as the usage of this function with the pointer + * prior to unlocking with rcu_read_unlock() to maintain the integrity of the + * pointer. + */ +unsigned long opp_get_voltage(struct opp *opp) +{ + struct opp *tmp_opp; + unsigned long v = 0; + + tmp_opp = rcu_dereference(opp); + if (unlikely(IS_ERR_OR_NULL(tmp_opp)) || !tmp_opp->available) + pr_err("%s: Invalid parameters\n", __func__); + else + v = tmp_opp->u_volt; + + return v; +} + +/** + * opp_get_freq() - Gets the frequency corresponding to an available opp + * @opp: opp for which frequency has to be returned for + * + * Return frequency in hertz corresponding to the opp, else + * return 0 + * + * Locking: This function must be called under rcu_read_lock(). opp is a rcu + * protected pointer. This means that opp which could have been fetched by + * opp_find_freq_{exact,ceil,floor} functions is valid as long as we are + * under RCU lock. The pointer returned by the opp_find_freq family must be + * used in the same section as the usage of this function with the pointer + * prior to unlocking with rcu_read_unlock() to maintain the integrity of the + * pointer. + */ +unsigned long opp_get_freq(struct opp *opp) +{ + struct opp *tmp_opp; + unsigned long f = 0; + + tmp_opp = rcu_dereference(opp); + if (unlikely(IS_ERR_OR_NULL(tmp_opp)) || !tmp_opp->available) + pr_err("%s: Invalid parameters\n", __func__); + else + f = tmp_opp->rate; + + return f; +} + +/** + * opp_get_opp_count() - Get number of opps available in the opp list + * @dev: device for which we do this operation + * + * This function returns the number of available opps if there are any, + * else returns 0 if none or the corresponding error value. + * + * Locking: This function must be called under rcu_read_lock(). This function + * internally references two RCU protected structures: device_opp and opp which + * are safe as long as we are under a common RCU locked section. + */ +int opp_get_opp_count(struct device *dev) +{ + struct device_opp *dev_opp; + struct opp *temp_opp; + int count = 0; + + dev_opp = find_device_opp(dev); + if (IS_ERR(dev_opp)) { + int r = PTR_ERR(dev_opp); + dev_err(dev, "%s: device OPP not found (%d)\n", __func__, r); + return r; + } + + list_for_each_entry_rcu(temp_opp, &dev_opp->opp_list, node) { + if (temp_opp->available) + count++; + } + + return count; +} + +/** + * opp_find_freq_exact() - search for an exact frequency + * @dev: device for which we do this operation + * @freq: frequency to search for + * @is_available: true/false - match for available opp + * + * Searches for exact match in the opp list and returns pointer to the matching + * opp if found, else returns ERR_PTR in case of error and should be handled + * using IS_ERR. + * + * Note: available is a modifier for the search. if available=true, then the + * match is for exact matching frequency and is available in the stored OPP + * table. if false, the match is for exact frequency which is not available. + * + * This provides a mechanism to enable an opp which is not available currently + * or the opposite as well. + * + * Locking: This function must be called under rcu_read_lock(). opp is a rcu + * protected pointer. The reason for the same is that the opp pointer which is + * returned will remain valid for use with opp_get_{voltage, freq} only while + * under the locked area. The pointer returned must be used prior to unlocking + * with rcu_read_unlock() to maintain the integrity of the pointer. + */ +struct opp *opp_find_freq_exact(struct device *dev, unsigned long freq, + bool available) +{ + struct device_opp *dev_opp; + struct opp *temp_opp, *opp = ERR_PTR(-ENODEV); + + dev_opp = find_device_opp(dev); + if (IS_ERR(dev_opp)) { + int r = PTR_ERR(dev_opp); + dev_err(dev, "%s: device OPP not found (%d)\n", __func__, r); + return ERR_PTR(r); + } + + list_for_each_entry_rcu(temp_opp, &dev_opp->opp_list, node) { + if (temp_opp->available == available && + temp_opp->rate == freq) { + opp = temp_opp; + break; + } + } + + return opp; +} + +/** + * opp_find_freq_ceil() - Search for an rounded ceil freq + * @dev: device for which we do this operation + * @freq: Start frequency + * + * Search for the matching ceil *available* OPP from a starting freq + * for a device. + * + * Returns matching *opp and refreshes *freq accordingly, else returns + * ERR_PTR in case of error and should be handled using IS_ERR. + * + * Locking: This function must be called under rcu_read_lock(). opp is a rcu + * protected pointer. The reason for the same is that the opp pointer which is + * returned will remain valid for use with opp_get_{voltage, freq} only while + * under the locked area. The pointer returned must be used prior to unlocking + * with rcu_read_unlock() to maintain the integrity of the pointer. + */ +struct opp *opp_find_freq_ceil(struct device *dev, unsigned long *freq) +{ + struct device_opp *dev_opp; + struct opp *temp_opp, *opp = ERR_PTR(-ENODEV); + + if (!dev || !freq) { + dev_err(dev, "%s: Invalid argument freq=%p\n", __func__, freq); + return ERR_PTR(-EINVAL); + } + + dev_opp = find_device_opp(dev); + if (IS_ERR(dev_opp)) + return opp; + + list_for_each_entry_rcu(temp_opp, &dev_opp->opp_list, node) { + if (temp_opp->available && temp_opp->rate >= *freq) { + opp = temp_opp; + *freq = opp->rate; + break; + } + } + + return opp; +} + +/** + * opp_find_freq_floor() - Search for a rounded floor freq + * @dev: device for which we do this operation + * @freq: Start frequency + * + * Search for the matching floor *available* OPP from a starting freq + * for a device. + * + * Returns matching *opp and refreshes *freq accordingly, else returns + * ERR_PTR in case of error and should be handled using IS_ERR. + * + * Locking: This function must be called under rcu_read_lock(). opp is a rcu + * protected pointer. The reason for the same is that the opp pointer which is + * returned will remain valid for use with opp_get_{voltage, freq} only while + * under the locked area. The pointer returned must be used prior to unlocking + * with rcu_read_unlock() to maintain the integrity of the pointer. + */ +struct opp *opp_find_freq_floor(struct device *dev, unsigned long *freq) +{ + struct device_opp *dev_opp; + struct opp *temp_opp, *opp = ERR_PTR(-ENODEV); + + if (!dev || !freq) { + dev_err(dev, "%s: Invalid argument freq=%p\n", __func__, freq); + return ERR_PTR(-EINVAL); + } + + dev_opp = find_device_opp(dev); + if (IS_ERR(dev_opp)) + return opp; + + list_for_each_entry_rcu(temp_opp, &dev_opp->opp_list, node) { + if (temp_opp->available) { + /* go to the next node, before choosing prev */ + if (temp_opp->rate > *freq) + break; + else + opp = temp_opp; + } + } + if (!IS_ERR(opp)) + *freq = opp->rate; + + return opp; +} + +/** + * opp_add() - Add an OPP table from a table definitions + * @dev: device for which we do this operation + * @freq: Frequency in Hz for this OPP + * @u_volt: Voltage in uVolts for this OPP + * + * This function adds an opp definition to the opp list and returns status. + * The opp is made available by default and it can be controlled using + * opp_enable/disable functions. + * + * Locking: The internal device_opp and opp structures are RCU protected. + * Hence this function internally uses RCU updater strategy with mutex locks + * to keep the integrity of the internal data structures. Callers should ensure + * that this function is *NOT* called under RCU protection or in contexts where + * mutex cannot be locked. + */ +int opp_add(struct device *dev, unsigned long freq, unsigned long u_volt) +{ + struct device_opp *dev_opp = NULL; + struct opp *opp, *new_opp; + struct list_head *head; + + /* allocate new OPP node */ + new_opp = kzalloc(sizeof(struct opp), GFP_KERNEL); + if (!new_opp) { + dev_warn(dev, "%s: Unable to create new OPP node\n", __func__); + return -ENOMEM; + } + + /* Hold our list modification lock here */ + mutex_lock(&dev_opp_list_lock); + + /* Check for existing list for 'dev' */ + dev_opp = find_device_opp(dev); + if (IS_ERR(dev_opp)) { + /* + * Allocate a new device OPP table. In the infrequent case + * where a new device is needed to be added, we pay this + * penalty. + */ + dev_opp = kzalloc(sizeof(struct device_opp), GFP_KERNEL); + if (!dev_opp) { + mutex_unlock(&dev_opp_list_lock); + kfree(new_opp); + dev_warn(dev, + "%s: Unable to create device OPP structure\n", + __func__); + return -ENOMEM; + } + + dev_opp->dev = dev; + INIT_LIST_HEAD(&dev_opp->opp_list); + + /* Secure the device list modification */ + list_add_rcu(&dev_opp->node, &dev_opp_list); + } + + /* populate the opp table */ + new_opp->dev_opp = dev_opp; + new_opp->rate = freq; + new_opp->u_volt = u_volt; + new_opp->available = true; + + /* Insert new OPP in order of increasing frequency */ + head = &dev_opp->opp_list; + list_for_each_entry_rcu(opp, &dev_opp->opp_list, node) { + if (new_opp->rate < opp->rate) + break; + else + head = &opp->node; + } + + list_add_rcu(&new_opp->node, head); + mutex_unlock(&dev_opp_list_lock); + + return 0; +} + +/** + * opp_set_availability() - helper to set the availability of an opp + * @dev: device for which we do this operation + * @freq: OPP frequency to modify availability + * @availability_req: availability status requested for this opp + * + * Set the availability of an OPP with an RCU operation, opp_{enable,disable} + * share a common logic which is isolated here. + * + * Returns -EINVAL for bad pointers, -ENOMEM if no memory available for the + * copy operation, returns 0 if no modifcation was done OR modification was + * successful. + * + * Locking: The internal device_opp and opp structures are RCU protected. + * Hence this function internally uses RCU updater strategy with mutex locks to + * keep the integrity of the internal data structures. Callers should ensure + * that this function is *NOT* called under RCU protection or in contexts where + * mutex locking or synchronize_rcu() blocking calls cannot be used. + */ +static int opp_set_availability(struct device *dev, unsigned long freq, + bool availability_req) +{ + struct device_opp *tmp_dev_opp, *dev_opp = NULL; + struct opp *new_opp, *tmp_opp, *opp = ERR_PTR(-ENODEV); + int r = 0; + + /* keep the node allocated */ + new_opp = kmalloc(sizeof(struct opp), GFP_KERNEL); + if (!new_opp) { + dev_warn(dev, "%s: Unable to create OPP\n", __func__); + return -ENOMEM; + } + + mutex_lock(&dev_opp_list_lock); + + /* Find the device_opp */ + list_for_each_entry(tmp_dev_opp, &dev_opp_list, node) { + if (dev == tmp_dev_opp->dev) { + dev_opp = tmp_dev_opp; + break; + } + } + if (IS_ERR(dev_opp)) { + r = PTR_ERR(dev_opp); + dev_warn(dev, "%s: Device OPP not found (%d)\n", __func__, r); + goto unlock; + } + + /* Do we have the frequency? */ + list_for_each_entry(tmp_opp, &dev_opp->opp_list, node) { + if (tmp_opp->rate == freq) { + opp = tmp_opp; + break; + } + } + if (IS_ERR(opp)) { + r = PTR_ERR(opp); + goto unlock; + } + + /* Is update really needed? */ + if (opp->available == availability_req) + goto unlock; + /* copy the old data over */ + *new_opp = *opp; + + /* plug in new node */ + new_opp->available = availability_req; + + list_replace_rcu(&opp->node, &new_opp->node); + mutex_unlock(&dev_opp_list_lock); + synchronize_rcu(); + + /* clean up old opp */ + new_opp = opp; + goto out; + +unlock: + mutex_unlock(&dev_opp_list_lock); +out: + kfree(new_opp); + return r; +} + +/** + * opp_enable() - Enable a specific OPP + * @dev: device for which we do this operation + * @freq: OPP frequency to enable + * + * Enables a provided opp. If the operation is valid, this returns 0, else the + * corresponding error value. It is meant to be used for users an OPP available + * after being temporarily made unavailable with opp_disable. + * + * Locking: The internal device_opp and opp structures are RCU protected. + * Hence this function indirectly uses RCU and mutex locks to keep the + * integrity of the internal data structures. Callers should ensure that + * this function is *NOT* called under RCU protection or in contexts where + * mutex locking or synchronize_rcu() blocking calls cannot be used. + */ +int opp_enable(struct device *dev, unsigned long freq) +{ + return opp_set_availability(dev, freq, true); +} + +/** + * opp_disable() - Disable a specific OPP + * @dev: device for which we do this operation + * @freq: OPP frequency to disable + * + * Disables a provided opp. If the operation is valid, this returns + * 0, else the corresponding error value. It is meant to be a temporary + * control by users to make this OPP not available until the circumstances are + * right to make it available again (with a call to opp_enable). + * + * Locking: The internal device_opp and opp structures are RCU protected. + * Hence this function indirectly uses RCU and mutex locks to keep the + * integrity of the internal data structures. Callers should ensure that + * this function is *NOT* called under RCU protection or in contexts where + * mutex locking or synchronize_rcu() blocking calls cannot be used. + */ +int opp_disable(struct device *dev, unsigned long freq) +{ + return opp_set_availability(dev, freq, false); +} + +#ifdef CONFIG_CPU_FREQ +/** + * opp_init_cpufreq_table() - create a cpufreq table for a device + * @dev: device for which we do this operation + * @table: Cpufreq table returned back to caller + * + * Generate a cpufreq table for a provided device- this assumes that the + * opp list is already initialized and ready for usage. + * + * This function allocates required memory for the cpufreq table. It is + * expected that the caller does the required maintenance such as freeing + * the table as required. + * + * Returns -EINVAL for bad pointers, -ENODEV if the device is not found, -ENOMEM + * if no memory available for the operation (table is not populated), returns 0 + * if successful and table is populated. + * + * WARNING: It is important for the callers to ensure refreshing their copy of + * the table if any of the mentioned functions have been invoked in the interim. + * + * Locking: The internal device_opp and opp structures are RCU protected. + * To simplify the logic, we pretend we are updater and hold relevant mutex here + * Callers should ensure that this function is *NOT* called under RCU protection + * or in contexts where mutex locking cannot be used. + */ +int opp_init_cpufreq_table(struct device *dev, + struct cpufreq_frequency_table **table) +{ + struct device_opp *dev_opp; + struct opp *opp; + struct cpufreq_frequency_table *freq_table; + int i = 0; + + /* Pretend as if I am an updater */ + mutex_lock(&dev_opp_list_lock); + + dev_opp = find_device_opp(dev); + if (IS_ERR(dev_opp)) { + int r = PTR_ERR(dev_opp); + mutex_unlock(&dev_opp_list_lock); + dev_err(dev, "%s: Device OPP not found (%d)\n", __func__, r); + return r; + } + + freq_table = kzalloc(sizeof(struct cpufreq_frequency_table) * + (opp_get_opp_count(dev) + 1), GFP_KERNEL); + if (!freq_table) { + mutex_unlock(&dev_opp_list_lock); + dev_warn(dev, "%s: Unable to allocate frequency table\n", + __func__); + return -ENOMEM; + } + + list_for_each_entry(opp, &dev_opp->opp_list, node) { + if (opp->available) { + freq_table[i].index = i; + freq_table[i].frequency = opp->rate / 1000; + i++; + } + } + mutex_unlock(&dev_opp_list_lock); + + freq_table[i].index = i; + freq_table[i].frequency = CPUFREQ_TABLE_END; + + *table = &freq_table[0]; + + return 0; +} +#endif /* CONFIG_CPU_FREQ */ diff --git a/drivers/base/power/power.h b/drivers/base/power/power.h index c0bd03c83b9c..698dde742587 100644 --- a/drivers/base/power/power.h +++ b/drivers/base/power/power.h @@ -34,6 +34,7 @@ extern void device_pm_move_last(struct device *); static inline void device_pm_init(struct device *dev) { + spin_lock_init(&dev->power.lock); pm_runtime_init(dev); } @@ -59,6 +60,7 @@ static inline void device_pm_move_last(struct device *dev) {} extern int dpm_sysfs_add(struct device *); extern void dpm_sysfs_remove(struct device *); +extern void rpm_sysfs_remove(struct device *); #else /* CONFIG_PM */ diff --git a/drivers/base/power/runtime.c b/drivers/base/power/runtime.c index b78c401ffa73..1dd8676d7f55 100644 --- a/drivers/base/power/runtime.c +++ b/drivers/base/power/runtime.c @@ -2,17 +2,55 @@ * drivers/base/power/runtime.c - Helper functions for device run-time PM * * Copyright (c) 2009 Rafael J. Wysocki <rjw@sisk.pl>, Novell Inc. + * Copyright (C) 2010 Alan Stern <stern@rowland.harvard.edu> * * This file is released under the GPLv2. */ #include <linux/sched.h> #include <linux/pm_runtime.h> -#include <linux/jiffies.h> +#include "power.h" -static int __pm_runtime_resume(struct device *dev, bool from_wq); -static int __pm_request_idle(struct device *dev); -static int __pm_request_resume(struct device *dev); +static int rpm_resume(struct device *dev, int rpmflags); +static int rpm_suspend(struct device *dev, int rpmflags); + +/** + * update_pm_runtime_accounting - Update the time accounting of power states + * @dev: Device to update the accounting for + * + * In order to be able to have time accounting of the various power states + * (as used by programs such as PowerTOP to show the effectiveness of runtime + * PM), we need to track the time spent in each state. + * update_pm_runtime_accounting must be called each time before the + * runtime_status field is updated, to account the time in the old state + * correctly. + */ +void update_pm_runtime_accounting(struct device *dev) +{ + unsigned long now = jiffies; + int delta; + + delta = now - dev->power.accounting_timestamp; + + if (delta < 0) + delta = 0; + + dev->power.accounting_timestamp = now; + + if (dev->power.disable_depth > 0) + return; + + if (dev->power.runtime_status == RPM_SUSPENDED) + dev->power.suspended_jiffies += delta; + else + dev->power.active_jiffies += delta; +} + +static void __update_runtime_status(struct device *dev, enum rpm_status status) +{ + update_pm_runtime_accounting(dev); + dev->power.runtime_status = status; +} /** * pm_runtime_deactivate_timer - Deactivate given device's suspend timer. @@ -40,62 +78,154 @@ static void pm_runtime_cancel_pending(struct device *dev) dev->power.request = RPM_REQ_NONE; } -/** - * __pm_runtime_idle - Notify device bus type if the device can be suspended. - * @dev: Device to notify the bus type about. +/* + * pm_runtime_autosuspend_expiration - Get a device's autosuspend-delay expiration time. + * @dev: Device to handle. * - * This function must be called under dev->power.lock with interrupts disabled. + * Compute the autosuspend-delay expiration time based on the device's + * power.last_busy time. If the delay has already expired or is disabled + * (negative) or the power.use_autosuspend flag isn't set, return 0. + * Otherwise return the expiration time in jiffies (adjusted to be nonzero). + * + * This function may be called either with or without dev->power.lock held. + * Either way it can be racy, since power.last_busy may be updated at any time. */ -static int __pm_runtime_idle(struct device *dev) - __releases(&dev->power.lock) __acquires(&dev->power.lock) +unsigned long pm_runtime_autosuspend_expiration(struct device *dev) +{ + int autosuspend_delay; + long elapsed; + unsigned long last_busy; + unsigned long expires = 0; + + if (!dev->power.use_autosuspend) + goto out; + + autosuspend_delay = ACCESS_ONCE(dev->power.autosuspend_delay); + if (autosuspend_delay < 0) + goto out; + + last_busy = ACCESS_ONCE(dev->power.last_busy); + elapsed = jiffies - last_busy; + if (elapsed < 0) + goto out; /* jiffies has wrapped around. */ + + /* + * If the autosuspend_delay is >= 1 second, align the timer by rounding + * up to the nearest second. + */ + expires = last_busy + msecs_to_jiffies(autosuspend_delay); + if (autosuspend_delay >= 1000) + expires = round_jiffies(expires); + expires += !expires; + if (elapsed >= expires - last_busy) + expires = 0; /* Already expired. */ + + out: + return expires; +} +EXPORT_SYMBOL_GPL(pm_runtime_autosuspend_expiration); + +/** + * rpm_check_suspend_allowed - Test whether a device may be suspended. + * @dev: Device to test. + */ +static int rpm_check_suspend_allowed(struct device *dev) { int retval = 0; if (dev->power.runtime_error) retval = -EINVAL; - else if (dev->power.idle_notification) - retval = -EINPROGRESS; else if (atomic_read(&dev->power.usage_count) > 0 - || dev->power.disable_depth > 0 - || dev->power.runtime_status != RPM_ACTIVE) + || dev->power.disable_depth > 0) retval = -EAGAIN; else if (!pm_children_suspended(dev)) retval = -EBUSY; + + /* Pending resume requests take precedence over suspends. */ + else if ((dev->power.deferred_resume + && dev->power.status == RPM_SUSPENDING) + || (dev->power.request_pending + && dev->power.request == RPM_REQ_RESUME)) + retval = -EAGAIN; + else if (dev->power.runtime_status == RPM_SUSPENDED) + retval = 1; + + return retval; +} + +/** + * rpm_idle - Notify device bus type if the device can be suspended. + * @dev: Device to notify the bus type about. + * @rpmflags: Flag bits. + * + * Check if the device's run-time PM status allows it to be suspended. If + * another idle notification has been started earlier, return immediately. If + * the RPM_ASYNC flag is set then queue an idle-notification request; otherwise + * run the ->runtime_idle() callback directly. + * + * This function must be called under dev->power.lock with interrupts disabled. + */ +static int rpm_idle(struct device *dev, int rpmflags) +{ + int (*callback)(struct device *); + int retval; + + retval = rpm_check_suspend_allowed(dev); + if (retval < 0) + ; /* Conditions are wrong. */ + + /* Idle notifications are allowed only in the RPM_ACTIVE state. */ + else if (dev->power.runtime_status != RPM_ACTIVE) + retval = -EAGAIN; + + /* + * Any pending request other than an idle notification takes + * precedence over us, except that the timer may be running. + */ + else if (dev->power.request_pending && + dev->power.request > RPM_REQ_IDLE) + retval = -EAGAIN; + + /* Act as though RPM_NOWAIT is always set. */ + else if (dev->power.idle_notification) + retval = -EINPROGRESS; if (retval) goto out; - if (dev->power.request_pending) { - /* - * If an idle notification request is pending, cancel it. Any - * other pending request takes precedence over us. - */ - if (dev->power.request == RPM_REQ_IDLE) { - dev->power.request = RPM_REQ_NONE; - } else if (dev->power.request != RPM_REQ_NONE) { - retval = -EAGAIN; - goto out; + /* Pending requests need to be canceled. */ + dev->power.request = RPM_REQ_NONE; + + if (dev->power.no_callbacks) { + /* Assume ->runtime_idle() callback would have suspended. */ + retval = rpm_suspend(dev, rpmflags); + goto out; + } + + /* Carry out an asynchronous or a synchronous idle notification. */ + if (rpmflags & RPM_ASYNC) { + dev->power.request = RPM_REQ_IDLE; + if (!dev->power.request_pending) { + dev->power.request_pending = true; + queue_work(pm_wq, &dev->power.work); } + goto out; } dev->power.idle_notification = true; - if (dev->bus && dev->bus->pm && dev->bus->pm->runtime_idle) { - spin_unlock_irq(&dev->power.lock); - - dev->bus->pm->runtime_idle(dev); - - spin_lock_irq(&dev->power.lock); - } else if (dev->type && dev->type->pm && dev->type->pm->runtime_idle) { - spin_unlock_irq(&dev->power.lock); - - dev->type->pm->runtime_idle(dev); + if (dev->bus && dev->bus->pm && dev->bus->pm->runtime_idle) + callback = dev->bus->pm->runtime_idle; + else if (dev->type && dev->type->pm && dev->type->pm->runtime_idle) + callback = dev->type->pm->runtime_idle; + else if (dev->class && dev->class->pm) + callback = dev->class->pm->runtime_idle; + else + callback = NULL; - spin_lock_irq(&dev->power.lock); - } else if (dev->class && dev->class->pm - && dev->class->pm->runtime_idle) { + if (callback) { spin_unlock_irq(&dev->power.lock); - dev->class->pm->runtime_idle(dev); + callback(dev); spin_lock_irq(&dev->power.lock); } @@ -108,113 +238,99 @@ static int __pm_runtime_idle(struct device *dev) } /** - * pm_runtime_idle - Notify device bus type if the device can be suspended. - * @dev: Device to notify the bus type about. + * rpm_callback - Run a given runtime PM callback for a given device. + * @cb: Runtime PM callback to run. + * @dev: Device to run the callback for. */ -int pm_runtime_idle(struct device *dev) +static int rpm_callback(int (*cb)(struct device *), struct device *dev) + __releases(&dev->power.lock) __acquires(&dev->power.lock) { int retval; - spin_lock_irq(&dev->power.lock); - retval = __pm_runtime_idle(dev); - spin_unlock_irq(&dev->power.lock); + if (!cb) + return -ENOSYS; - return retval; -} -EXPORT_SYMBOL_GPL(pm_runtime_idle); - - -/** - * update_pm_runtime_accounting - Update the time accounting of power states - * @dev: Device to update the accounting for - * - * In order to be able to have time accounting of the various power states - * (as used by programs such as PowerTOP to show the effectiveness of runtime - * PM), we need to track the time spent in each state. - * update_pm_runtime_accounting must be called each time before the - * runtime_status field is updated, to account the time in the old state - * correctly. - */ -void update_pm_runtime_accounting(struct device *dev) -{ - unsigned long now = jiffies; - int delta; - - delta = now - dev->power.accounting_timestamp; - - if (delta < 0) - delta = 0; + spin_unlock_irq(&dev->power.lock); - dev->power.accounting_timestamp = now; + retval = cb(dev); - if (dev->power.disable_depth > 0) - return; - - if (dev->power.runtime_status == RPM_SUSPENDED) - dev->power.suspended_jiffies += delta; - else - dev->power.active_jiffies += delta; -} + spin_lock_irq(&dev->power.lock); + dev->power.runtime_error = retval; -static void __update_runtime_status(struct device *dev, enum rpm_status status) -{ - update_pm_runtime_accounting(dev); - dev->power.runtime_status = status; + return retval; } /** - * __pm_runtime_suspend - Carry out run-time suspend of given device. + * rpm_suspend - Carry out run-time suspend of given device. * @dev: Device to suspend. - * @from_wq: If set, the function has been called via pm_wq. + * @rpmflags: Flag bits. * - * Check if the device can be suspended and run the ->runtime_suspend() callback - * provided by its bus type. If another suspend has been started earlier, wait - * for it to finish. If an idle notification or suspend request is pending or - * scheduled, cancel it. + * Check if the device's run-time PM status allows it to be suspended. If + * another suspend has been started earlier, either return immediately or wait + * for it to finish, depending on the RPM_NOWAIT and RPM_ASYNC flags. Cancel a + * pending idle notification. If the RPM_ASYNC flag is set then queue a + * suspend request; otherwise run the ->runtime_suspend() callback directly. + * If a deferred resume was requested while the callback was running then carry + * it out; otherwise send an idle notification for the device (if the suspend + * failed) or for its parent (if the suspend succeeded). * * This function must be called under dev->power.lock with interrupts disabled. */ -int __pm_runtime_suspend(struct device *dev, bool from_wq) +static int rpm_suspend(struct device *dev, int rpmflags) __releases(&dev->power.lock) __acquires(&dev->power.lock) { + int (*callback)(struct device *); struct device *parent = NULL; - bool notify = false; - int retval = 0; + int retval; - dev_dbg(dev, "__pm_runtime_suspend()%s!\n", - from_wq ? " from workqueue" : ""); + dev_dbg(dev, "%s flags 0x%x\n", __func__, rpmflags); repeat: - if (dev->power.runtime_error) { - retval = -EINVAL; - goto out; - } + retval = rpm_check_suspend_allowed(dev); - /* Pending resume requests take precedence over us. */ - if (dev->power.request_pending - && dev->power.request == RPM_REQ_RESUME) { + if (retval < 0) + ; /* Conditions are wrong. */ + + /* Synchronous suspends are not allowed in the RPM_RESUMING state. */ + else if (dev->power.runtime_status == RPM_RESUMING && + !(rpmflags & RPM_ASYNC)) retval = -EAGAIN; + if (retval) goto out; + + /* If the autosuspend_delay time hasn't expired yet, reschedule. */ + if ((rpmflags & RPM_AUTO) + && dev->power.runtime_status != RPM_SUSPENDING) { + unsigned long expires = pm_runtime_autosuspend_expiration(dev); + + if (expires != 0) { + /* Pending requests need to be canceled. */ + dev->power.request = RPM_REQ_NONE; + + /* + * Optimization: If the timer is already running and is + * set to expire at or before the autosuspend delay, + * avoid the overhead of resetting it. Just let it + * expire; pm_suspend_timer_fn() will take care of the + * rest. + */ + if (!(dev->power.timer_expires && time_before_eq( + dev->power.timer_expires, expires))) { + dev->power.timer_expires = expires; + mod_timer(&dev->power.suspend_timer, expires); + } + dev->power.timer_autosuspends = 1; + goto out; + } } /* Other scheduled or pending requests need to be canceled. */ pm_runtime_cancel_pending(dev); - if (dev->power.runtime_status == RPM_SUSPENDED) - retval = 1; - else if (dev->power.runtime_status == RPM_RESUMING - || dev->power.disable_depth > 0 - || atomic_read(&dev->power.usage_count) > 0) - retval = -EAGAIN; - else if (!pm_children_suspended(dev)) - retval = -EBUSY; - if (retval) - goto out; - if (dev->power.runtime_status == RPM_SUSPENDING) { DEFINE_WAIT(wait); - if (from_wq) { + if (rpmflags & (RPM_ASYNC | RPM_NOWAIT)) { retval = -EINPROGRESS; goto out; } @@ -236,46 +352,42 @@ int __pm_runtime_suspend(struct device *dev, bool from_wq) goto repeat; } - __update_runtime_status(dev, RPM_SUSPENDING); dev->power.deferred_resume = false; + if (dev->power.no_callbacks) + goto no_callback; /* Assume success. */ + + /* Carry out an asynchronous or a synchronous suspend. */ + if (rpmflags & RPM_ASYNC) { + dev->power.request = (rpmflags & RPM_AUTO) ? + RPM_REQ_AUTOSUSPEND : RPM_REQ_SUSPEND; + if (!dev->power.request_pending) { + dev->power.request_pending = true; + queue_work(pm_wq, &dev->power.work); + } + goto out; + } - if (dev->bus && dev->bus->pm && dev->bus->pm->runtime_suspend) { - spin_unlock_irq(&dev->power.lock); - - retval = dev->bus->pm->runtime_suspend(dev); - - spin_lock_irq(&dev->power.lock); - dev->power.runtime_error = retval; - } else if (dev->type && dev->type->pm - && dev->type->pm->runtime_suspend) { - spin_unlock_irq(&dev->power.lock); - - retval = dev->type->pm->runtime_suspend(dev); - - spin_lock_irq(&dev->power.lock); - dev->power.runtime_error = retval; - } else if (dev->class && dev->class->pm - && dev->class->pm->runtime_suspend) { - spin_unlock_irq(&dev->power.lock); - - retval = dev->class->pm->runtime_suspend(dev); + __update_runtime_status(dev, RPM_SUSPENDING); - spin_lock_irq(&dev->power.lock); - dev->power.runtime_error = retval; - } else { - retval = -ENOSYS; - } + if (dev->bus && dev->bus->pm && dev->bus->pm->runtime_suspend) + callback = dev->bus->pm->runtime_suspend; + else if (dev->type && dev->type->pm && dev->type->pm->runtime_suspend) + callback = dev->type->pm->runtime_suspend; + else if (dev->class && dev->class->pm) + callback = dev->class->pm->runtime_suspend; + else + callback = NULL; + retval = rpm_callback(callback, dev); if (retval) { __update_runtime_status(dev, RPM_ACTIVE); - if (retval == -EAGAIN || retval == -EBUSY) { - if (dev->power.timer_expires == 0) - notify = true; + dev->power.deferred_resume = 0; + if (retval == -EAGAIN || retval == -EBUSY) dev->power.runtime_error = 0; - } else { + else pm_runtime_cancel_pending(dev); - } } else { + no_callback: __update_runtime_status(dev, RPM_SUSPENDED); pm_runtime_deactivate_timer(dev); @@ -287,14 +399,11 @@ int __pm_runtime_suspend(struct device *dev, bool from_wq) wake_up_all(&dev->power.wait_queue); if (dev->power.deferred_resume) { - __pm_runtime_resume(dev, false); + rpm_resume(dev, 0); retval = -EAGAIN; goto out; } - if (notify) - __pm_runtime_idle(dev); - if (parent && !parent->power.ignore_children) { spin_unlock_irq(&dev->power.lock); @@ -304,72 +413,69 @@ int __pm_runtime_suspend(struct device *dev, bool from_wq) } out: - dev_dbg(dev, "__pm_runtime_suspend() returns %d!\n", retval); - - return retval; -} - -/** - * pm_runtime_suspend - Carry out run-time suspend of given device. - * @dev: Device to suspend. - */ -int pm_runtime_suspend(struct device *dev) -{ - int retval; - - spin_lock_irq(&dev->power.lock); - retval = __pm_runtime_suspend(dev, false); - spin_unlock_irq(&dev->power.lock); + dev_dbg(dev, "%s returns %d\n", __func__, retval); return retval; } -EXPORT_SYMBOL_GPL(pm_runtime_suspend); /** - * __pm_runtime_resume - Carry out run-time resume of given device. + * rpm_resume - Carry out run-time resume of given device. * @dev: Device to resume. - * @from_wq: If set, the function has been called via pm_wq. + * @rpmflags: Flag bits. * - * Check if the device can be woken up and run the ->runtime_resume() callback - * provided by its bus type. If another resume has been started earlier, wait - * for it to finish. If there's a suspend running in parallel with this - * function, wait for it to finish and resume the device. Cancel any scheduled - * or pending requests. + * Check if the device's run-time PM status allows it to be resumed. Cancel + * any scheduled or pending requests. If another resume has been started + * earlier, either return imediately or wait for it to finish, depending on the + * RPM_NOWAIT and RPM_ASYNC flags. Similarly, if there's a suspend running in + * parallel with this function, either tell the other process to resume after + * suspending (deferred_resume) or wait for it to finish. If the RPM_ASYNC + * flag is set then queue a resume request; otherwise run the + * ->runtime_resume() callback directly. Queue an idle notification for the + * device if the resume succeeded. * * This function must be called under dev->power.lock with interrupts disabled. */ -int __pm_runtime_resume(struct device *dev, bool from_wq) +static int rpm_resume(struct device *dev, int rpmflags) __releases(&dev->power.lock) __acquires(&dev->power.lock) { + int (*callback)(struct device *); struct device *parent = NULL; int retval = 0; - dev_dbg(dev, "__pm_runtime_resume()%s!\n", - from_wq ? " from workqueue" : ""); + dev_dbg(dev, "%s flags 0x%x\n", __func__, rpmflags); repeat: - if (dev->power.runtime_error) { + if (dev->power.runtime_error) retval = -EINVAL; + else if (dev->power.disable_depth > 0) + retval = -EAGAIN; + if (retval) goto out; - } - pm_runtime_cancel_pending(dev); + /* + * Other scheduled or pending requests need to be canceled. Small + * optimization: If an autosuspend timer is running, leave it running + * rather than cancelling it now only to restart it again in the near + * future. + */ + dev->power.request = RPM_REQ_NONE; + if (!dev->power.timer_autosuspends) + pm_runtime_deactivate_timer(dev); - if (dev->power.runtime_status == RPM_ACTIVE) + if (dev->power.runtime_status == RPM_ACTIVE) { retval = 1; - else if (dev->power.disable_depth > 0) - retval = -EAGAIN; - if (retval) goto out; + } if (dev->power.runtime_status == RPM_RESUMING || dev->power.runtime_status == RPM_SUSPENDING) { DEFINE_WAIT(wait); - if (from_wq) { + if (rpmflags & (RPM_ASYNC | RPM_NOWAIT)) { if (dev->power.runtime_status == RPM_SUSPENDING) dev->power.deferred_resume = true; - retval = -EINPROGRESS; + else + retval = -EINPROGRESS; goto out; } @@ -391,6 +497,34 @@ int __pm_runtime_resume(struct device *dev, bool from_wq) goto repeat; } + /* + * See if we can skip waking up the parent. This is safe only if + * power.no_callbacks is set, because otherwise we don't know whether + * the resume will actually succeed. + */ + if (dev->power.no_callbacks && !parent && dev->parent) { + spin_lock(&dev->parent->power.lock); + if (dev->parent->power.disable_depth > 0 + || dev->parent->power.ignore_children + || dev->parent->power.runtime_status == RPM_ACTIVE) { + atomic_inc(&dev->parent->power.child_count); + spin_unlock(&dev->parent->power.lock); + goto no_callback; /* Assume success. */ + } + spin_unlock(&dev->parent->power.lock); + } + + /* Carry out an asynchronous or a synchronous resume. */ + if (rpmflags & RPM_ASYNC) { + dev->power.request = RPM_REQ_RESUME; + if (!dev->power.request_pending) { + dev->power.request_pending = true; + queue_work(pm_wq, &dev->power.work); + } + retval = 0; + goto out; + } + if (!parent && dev->parent) { /* * Increment the parent's resume counter and resume it if @@ -408,7 +542,7 @@ int __pm_runtime_resume(struct device *dev, bool from_wq) */ if (!parent->power.disable_depth && !parent->power.ignore_children) { - __pm_runtime_resume(parent, false); + rpm_resume(parent, 0); if (parent->power.runtime_status != RPM_ACTIVE) retval = -EBUSY; } @@ -420,39 +554,26 @@ int __pm_runtime_resume(struct device *dev, bool from_wq) goto repeat; } - __update_runtime_status(dev, RPM_RESUMING); - - if (dev->bus && dev->bus->pm && dev->bus->pm->runtime_resume) { - spin_unlock_irq(&dev->power.lock); - - retval = dev->bus->pm->runtime_resume(dev); - - spin_lock_irq(&dev->power.lock); - dev->power.runtime_error = retval; - } else if (dev->type && dev->type->pm - && dev->type->pm->runtime_resume) { - spin_unlock_irq(&dev->power.lock); - - retval = dev->type->pm->runtime_resume(dev); + if (dev->power.no_callbacks) + goto no_callback; /* Assume success. */ - spin_lock_irq(&dev->power.lock); - dev->power.runtime_error = retval; - } else if (dev->class && dev->class->pm - && dev->class->pm->runtime_resume) { - spin_unlock_irq(&dev->power.lock); - - retval = dev->class->pm->runtime_resume(dev); + __update_runtime_status(dev, RPM_RESUMING); - spin_lock_irq(&dev->power.lock); - dev->power.runtime_error = retval; - } else { - retval = -ENOSYS; - } + if (dev->bus && dev->bus->pm && dev->bus->pm->runtime_resume) + callback = dev->bus->pm->runtime_resume; + else if (dev->type && dev->type->pm && dev->type->pm->runtime_resume) + callback = dev->type->pm->runtime_resume; + else if (dev->class && dev->class->pm) + callback = dev->class->pm->runtime_resume; + else + callback = NULL; + retval = rpm_callback(callback, dev); if (retval) { __update_runtime_status(dev, RPM_SUSPENDED); pm_runtime_cancel_pending(dev); } else { + no_callback: __update_runtime_status(dev, RPM_ACTIVE); if (parent) atomic_inc(&parent->power.child_count); @@ -460,7 +581,7 @@ int __pm_runtime_resume(struct device *dev, bool from_wq) wake_up_all(&dev->power.wait_queue); if (!retval) - __pm_request_idle(dev); + rpm_idle(dev, RPM_ASYNC); out: if (parent) { @@ -471,28 +592,12 @@ int __pm_runtime_resume(struct device *dev, bool from_wq) spin_lock_irq(&dev->power.lock); } - dev_dbg(dev, "__pm_runtime_resume() returns %d!\n", retval); + dev_dbg(dev, "%s returns %d\n", __func__, retval); return retval; } /** - * pm_runtime_resume - Carry out run-time resume of given device. - * @dev: Device to suspend. - */ -int pm_runtime_resume(struct device *dev) -{ - int retval; - - spin_lock_irq(&dev->power.lock); - retval = __pm_runtime_resume(dev, false); - spin_unlock_irq(&dev->power.lock); - - return retval; -} -EXPORT_SYMBOL_GPL(pm_runtime_resume); - -/** * pm_runtime_work - Universal run-time PM work function. * @work: Work structure used for scheduling the execution of this function. * @@ -517,13 +622,16 @@ static void pm_runtime_work(struct work_struct *work) case RPM_REQ_NONE: break; case RPM_REQ_IDLE: - __pm_runtime_idle(dev); + rpm_idle(dev, RPM_NOWAIT); break; case RPM_REQ_SUSPEND: - __pm_runtime_suspend(dev, true); + rpm_suspend(dev, RPM_NOWAIT); + break; + case RPM_REQ_AUTOSUSPEND: + rpm_suspend(dev, RPM_NOWAIT | RPM_AUTO); break; case RPM_REQ_RESUME: - __pm_runtime_resume(dev, true); + rpm_resume(dev, RPM_NOWAIT); break; } @@ -532,117 +640,10 @@ static void pm_runtime_work(struct work_struct *work) } /** - * __pm_request_idle - Submit an idle notification request for given device. - * @dev: Device to handle. - * - * Check if the device's run-time PM status is correct for suspending the device - * and queue up a request to run __pm_runtime_idle() for it. - * - * This function must be called under dev->power.lock with interrupts disabled. - */ -static int __pm_request_idle(struct device *dev) -{ - int retval = 0; - - if (dev->power.runtime_error) - retval = -EINVAL; - else if (atomic_read(&dev->power.usage_count) > 0 - || dev->power.disable_depth > 0 - || dev->power.runtime_status == RPM_SUSPENDED - || dev->power.runtime_status == RPM_SUSPENDING) - retval = -EAGAIN; - else if (!pm_children_suspended(dev)) - retval = -EBUSY; - if (retval) - return retval; - - if (dev->power.request_pending) { - /* Any requests other then RPM_REQ_IDLE take precedence. */ - if (dev->power.request == RPM_REQ_NONE) - dev->power.request = RPM_REQ_IDLE; - else if (dev->power.request != RPM_REQ_IDLE) - retval = -EAGAIN; - return retval; - } - - dev->power.request = RPM_REQ_IDLE; - dev->power.request_pending = true; - queue_work(pm_wq, &dev->power.work); - - return retval; -} - -/** - * pm_request_idle - Submit an idle notification request for given device. - * @dev: Device to handle. - */ -int pm_request_idle(struct device *dev) -{ - unsigned long flags; - int retval; - - spin_lock_irqsave(&dev->power.lock, flags); - retval = __pm_request_idle(dev); - spin_unlock_irqrestore(&dev->power.lock, flags); - - return retval; -} -EXPORT_SYMBOL_GPL(pm_request_idle); - -/** - * __pm_request_suspend - Submit a suspend request for given device. - * @dev: Device to suspend. - * - * This function must be called under dev->power.lock with interrupts disabled. - */ -static int __pm_request_suspend(struct device *dev) -{ - int retval = 0; - - if (dev->power.runtime_error) - return -EINVAL; - - if (dev->power.runtime_status == RPM_SUSPENDED) - retval = 1; - else if (atomic_read(&dev->power.usage_count) > 0 - || dev->power.disable_depth > 0) - retval = -EAGAIN; - else if (dev->power.runtime_status == RPM_SUSPENDING) - retval = -EINPROGRESS; - else if (!pm_children_suspended(dev)) - retval = -EBUSY; - if (retval < 0) - return retval; - - pm_runtime_deactivate_timer(dev); - - if (dev->power.request_pending) { - /* - * Pending resume requests take precedence over us, but we can - * overtake any other pending request. - */ - if (dev->power.request == RPM_REQ_RESUME) - retval = -EAGAIN; - else if (dev->power.request != RPM_REQ_SUSPEND) - dev->power.request = retval ? - RPM_REQ_NONE : RPM_REQ_SUSPEND; - return retval; - } else if (retval) { - return retval; - } - - dev->power.request = RPM_REQ_SUSPEND; - dev->power.request_pending = true; - queue_work(pm_wq, &dev->power.work); - - return 0; -} - -/** * pm_suspend_timer_fn - Timer function for pm_schedule_suspend(). * @data: Device pointer passed by pm_schedule_suspend(). * - * Check if the time is right and execute __pm_request_suspend() in that case. + * Check if the time is right and queue a suspend request. */ static void pm_suspend_timer_fn(unsigned long data) { @@ -656,7 +657,8 @@ static void pm_suspend_timer_fn(unsigned long data) /* If 'expire' is after 'jiffies' we've been called too early. */ if (expires > 0 && !time_after(expires, jiffies)) { dev->power.timer_expires = 0; - __pm_request_suspend(dev); + rpm_suspend(dev, dev->power.timer_autosuspends ? + (RPM_ASYNC | RPM_AUTO) : RPM_ASYNC); } spin_unlock_irqrestore(&dev->power.lock, flags); @@ -670,47 +672,25 @@ static void pm_suspend_timer_fn(unsigned long data) int pm_schedule_suspend(struct device *dev, unsigned int delay) { unsigned long flags; - int retval = 0; + int retval; spin_lock_irqsave(&dev->power.lock, flags); - if (dev->power.runtime_error) { - retval = -EINVAL; - goto out; - } - if (!delay) { - retval = __pm_request_suspend(dev); + retval = rpm_suspend(dev, RPM_ASYNC); goto out; } - pm_runtime_deactivate_timer(dev); - - if (dev->power.request_pending) { - /* - * Pending resume requests take precedence over us, but any - * other pending requests have to be canceled. - */ - if (dev->power.request == RPM_REQ_RESUME) { - retval = -EAGAIN; - goto out; - } - dev->power.request = RPM_REQ_NONE; - } - - if (dev->power.runtime_status == RPM_SUSPENDED) - retval = 1; - else if (atomic_read(&dev->power.usage_count) > 0 - || dev->power.disable_depth > 0) - retval = -EAGAIN; - else if (!pm_children_suspended(dev)) - retval = -EBUSY; + retval = rpm_check_suspend_allowed(dev); if (retval) goto out; + /* Other scheduled or pending requests need to be canceled. */ + pm_runtime_cancel_pending(dev); + dev->power.timer_expires = jiffies + msecs_to_jiffies(delay); - if (!dev->power.timer_expires) - dev->power.timer_expires = 1; + dev->power.timer_expires += !dev->power.timer_expires; + dev->power.timer_autosuspends = 0; mod_timer(&dev->power.suspend_timer, dev->power.timer_expires); out: @@ -721,103 +701,88 @@ int pm_schedule_suspend(struct device *dev, unsigned int delay) EXPORT_SYMBOL_GPL(pm_schedule_suspend); /** - * pm_request_resume - Submit a resume request for given device. - * @dev: Device to resume. + * __pm_runtime_idle - Entry point for run-time idle operations. + * @dev: Device to send idle notification for. + * @rpmflags: Flag bits. * - * This function must be called under dev->power.lock with interrupts disabled. + * If the RPM_GET_PUT flag is set, decrement the device's usage count and + * return immediately if it is larger than zero. Then carry out an idle + * notification, either synchronous or asynchronous. + * + * This routine may be called in atomic context if the RPM_ASYNC flag is set. */ -static int __pm_request_resume(struct device *dev) +int __pm_runtime_idle(struct device *dev, int rpmflags) { - int retval = 0; - - if (dev->power.runtime_error) - return -EINVAL; - - if (dev->power.runtime_status == RPM_ACTIVE) - retval = 1; - else if (dev->power.runtime_status == RPM_RESUMING) - retval = -EINPROGRESS; - else if (dev->power.disable_depth > 0) - retval = -EAGAIN; - if (retval < 0) - return retval; - - pm_runtime_deactivate_timer(dev); + unsigned long flags; + int retval; - if (dev->power.runtime_status == RPM_SUSPENDING) { - dev->power.deferred_resume = true; - return retval; + if (rpmflags & RPM_GET_PUT) { + if (!atomic_dec_and_test(&dev->power.usage_count)) + return 0; } - if (dev->power.request_pending) { - /* If non-resume request is pending, we can overtake it. */ - dev->power.request = retval ? RPM_REQ_NONE : RPM_REQ_RESUME; - return retval; - } - if (retval) - return retval; - dev->power.request = RPM_REQ_RESUME; - dev->power.request_pending = true; - queue_work(pm_wq, &dev->power.work); + spin_lock_irqsave(&dev->power.lock, flags); + retval = rpm_idle(dev, rpmflags); + spin_unlock_irqrestore(&dev->power.lock, flags); return retval; } +EXPORT_SYMBOL_GPL(__pm_runtime_idle); /** - * pm_request_resume - Submit a resume request for given device. - * @dev: Device to resume. + * __pm_runtime_suspend - Entry point for run-time put/suspend operations. + * @dev: Device to suspend. + * @rpmflags: Flag bits. + * + * If the RPM_GET_PUT flag is set, decrement the device's usage count and + * return immediately if it is larger than zero. Then carry out a suspend, + * either synchronous or asynchronous. + * + * This routine may be called in atomic context if the RPM_ASYNC flag is set. */ -int pm_request_resume(struct device *dev) +int __pm_runtime_suspend(struct device *dev, int rpmflags) { unsigned long flags; int retval; + if (rpmflags & RPM_GET_PUT) { + if (!atomic_dec_and_test(&dev->power.usage_count)) + return 0; + } + spin_lock_irqsave(&dev->power.lock, flags); - retval = __pm_request_resume(dev); + retval = rpm_suspend(dev, rpmflags); spin_unlock_irqrestore(&dev->power.lock, flags); return retval; } -EXPORT_SYMBOL_GPL(pm_request_resume); +EXPORT_SYMBOL_GPL(__pm_runtime_suspend); /** - * __pm_runtime_get - Reference count a device and wake it up, if necessary. - * @dev: Device to handle. - * @sync: If set and the device is suspended, resume it synchronously. + * __pm_runtime_resume - Entry point for run-time resume operations. + * @dev: Device to resume. + * @rpmflags: Flag bits. + * + * If the RPM_GET_PUT flag is set, increment the device's usage count. Then + * carry out a resume, either synchronous or asynchronous. * - * Increment the usage count of the device and resume it or submit a resume - * request for it, depending on the value of @sync. + * This routine may be called in atomic context if the RPM_ASYNC flag is set. */ -int __pm_runtime_get(struct device *dev, bool sync) +int __pm_runtime_resume(struct device *dev, int rpmflags) { + unsigned long flags; int retval; - atomic_inc(&dev->power.usage_count); - retval = sync ? pm_runtime_resume(dev) : pm_request_resume(dev); + if (rpmflags & RPM_GET_PUT) + atomic_inc(&dev->power.usage_count); - return retval; -} -EXPORT_SYMBOL_GPL(__pm_runtime_get); - -/** - * __pm_runtime_put - Decrement the device's usage counter and notify its bus. - * @dev: Device to handle. - * @sync: If the device's bus type is to be notified, do that synchronously. - * - * Decrement the usage count of the device and if it reaches zero, carry out a - * synchronous idle notification or submit an idle notification request for it, - * depending on the value of @sync. - */ -int __pm_runtime_put(struct device *dev, bool sync) -{ - int retval = 0; - - if (atomic_dec_and_test(&dev->power.usage_count)) - retval = sync ? pm_runtime_idle(dev) : pm_request_idle(dev); + spin_lock_irqsave(&dev->power.lock, flags); + retval = rpm_resume(dev, rpmflags); + spin_unlock_irqrestore(&dev->power.lock, flags); return retval; } -EXPORT_SYMBOL_GPL(__pm_runtime_put); +EXPORT_SYMBOL_GPL(__pm_runtime_resume); /** * __pm_runtime_set_status - Set run-time PM status of a device. @@ -968,7 +933,7 @@ int pm_runtime_barrier(struct device *dev) if (dev->power.request_pending && dev->power.request == RPM_REQ_RESUME) { - __pm_runtime_resume(dev, false); + rpm_resume(dev, 0); retval = 1; } @@ -1017,7 +982,7 @@ void __pm_runtime_disable(struct device *dev, bool check_resume) */ pm_runtime_get_noresume(dev); - __pm_runtime_resume(dev, false); + rpm_resume(dev, 0); pm_runtime_put_noidle(dev); } @@ -1065,7 +1030,7 @@ void pm_runtime_forbid(struct device *dev) dev->power.runtime_auto = false; atomic_inc(&dev->power.usage_count); - __pm_runtime_resume(dev, false); + rpm_resume(dev, 0); out: spin_unlock_irq(&dev->power.lock); @@ -1086,7 +1051,7 @@ void pm_runtime_allow(struct device *dev) dev->power.runtime_auto = true; if (atomic_dec_and_test(&dev->power.usage_count)) - __pm_runtime_idle(dev); + rpm_idle(dev, RPM_AUTO); out: spin_unlock_irq(&dev->power.lock); @@ -1094,13 +1059,110 @@ void pm_runtime_allow(struct device *dev) EXPORT_SYMBOL_GPL(pm_runtime_allow); /** + * pm_runtime_no_callbacks - Ignore run-time PM callbacks for a device. + * @dev: Device to handle. + * + * Set the power.no_callbacks flag, which tells the PM core that this + * device is power-managed through its parent and has no run-time PM + * callbacks of its own. The run-time sysfs attributes will be removed. + * + */ +void pm_runtime_no_callbacks(struct device *dev) +{ + spin_lock_irq(&dev->power.lock); + dev->power.no_callbacks = 1; + spin_unlock_irq(&dev->power.lock); + if (device_is_registered(dev)) + rpm_sysfs_remove(dev); +} +EXPORT_SYMBOL_GPL(pm_runtime_no_callbacks); + +/** + * update_autosuspend - Handle a change to a device's autosuspend settings. + * @dev: Device to handle. + * @old_delay: The former autosuspend_delay value. + * @old_use: The former use_autosuspend value. + * + * Prevent runtime suspend if the new delay is negative and use_autosuspend is + * set; otherwise allow it. Send an idle notification if suspends are allowed. + * + * This function must be called under dev->power.lock with interrupts disabled. + */ +static void update_autosuspend(struct device *dev, int old_delay, int old_use) +{ + int delay = dev->power.autosuspend_delay; + + /* Should runtime suspend be prevented now? */ + if (dev->power.use_autosuspend && delay < 0) { + + /* If it used to be allowed then prevent it. */ + if (!old_use || old_delay >= 0) { + atomic_inc(&dev->power.usage_count); + rpm_resume(dev, 0); + } + } + + /* Runtime suspend should be allowed now. */ + else { + + /* If it used to be prevented then allow it. */ + if (old_use && old_delay < 0) + atomic_dec(&dev->power.usage_count); + + /* Maybe we can autosuspend now. */ + rpm_idle(dev, RPM_AUTO); + } +} + +/** + * pm_runtime_set_autosuspend_delay - Set a device's autosuspend_delay value. + * @dev: Device to handle. + * @delay: Value of the new delay in milliseconds. + * + * Set the device's power.autosuspend_delay value. If it changes to negative + * and the power.use_autosuspend flag is set, prevent run-time suspends. If it + * changes the other way, allow run-time suspends. + */ +void pm_runtime_set_autosuspend_delay(struct device *dev, int delay) +{ + int old_delay, old_use; + + spin_lock_irq(&dev->power.lock); + old_delay = dev->power.autosuspend_delay; + old_use = dev->power.use_autosuspend; + dev->power.autosuspend_delay = delay; + update_autosuspend(dev, old_delay, old_use); + spin_unlock_irq(&dev->power.lock); +} +EXPORT_SYMBOL_GPL(pm_runtime_set_autosuspend_delay); + +/** + * __pm_runtime_use_autosuspend - Set a device's use_autosuspend flag. + * @dev: Device to handle. + * @use: New value for use_autosuspend. + * + * Set the device's power.use_autosuspend flag, and allow or prevent run-time + * suspends as needed. + */ +void __pm_runtime_use_autosuspend(struct device *dev, bool use) +{ + int old_delay, old_use; + + spin_lock_irq(&dev->power.lock); + old_delay = dev->power.autosuspend_delay; + old_use = dev->power.use_autosuspend; + dev->power.use_autosuspend = use; + update_autosuspend(dev, old_delay, old_use); + spin_unlock_irq(&dev->power.lock); +} +EXPORT_SYMBOL_GPL(__pm_runtime_use_autosuspend); + +/** * pm_runtime_init - Initialize run-time PM fields in given device object. * @dev: Device object to initialize. */ void pm_runtime_init(struct device *dev) { - spin_lock_init(&dev->power.lock); - dev->power.runtime_status = RPM_SUSPENDED; dev->power.idle_notification = false; diff --git a/drivers/base/power/sysfs.c b/drivers/base/power/sysfs.c index e56b4388fe61..0b1e46bf3e56 100644 --- a/drivers/base/power/sysfs.c +++ b/drivers/base/power/sysfs.c @@ -75,12 +75,27 @@ * attribute is set to "enabled" by bus type code or device drivers and in * that cases it should be safe to leave the default value. * + * autosuspend_delay_ms - Report/change a device's autosuspend_delay value + * + * Some drivers don't want to carry out a runtime suspend as soon as a + * device becomes idle; they want it always to remain idle for some period + * of time before suspending it. This period is the autosuspend_delay + * value (expressed in milliseconds) and it can be controlled by the user. + * If the value is negative then the device will never be runtime + * suspended. + * + * NOTE: The autosuspend_delay_ms attribute and the autosuspend_delay + * value are used only if the driver calls pm_runtime_use_autosuspend(). + * * wakeup_count - Report the number of wakeup events related to the device */ static const char enabled[] = "enabled"; static const char disabled[] = "disabled"; +const char power_group_name[] = "power"; +EXPORT_SYMBOL_GPL(power_group_name); + #ifdef CONFIG_PM_RUNTIME static const char ctrl_auto[] = "auto"; static const char ctrl_on[] = "on"; @@ -170,6 +185,33 @@ static ssize_t rtpm_status_show(struct device *dev, } static DEVICE_ATTR(runtime_status, 0444, rtpm_status_show, NULL); + +static ssize_t autosuspend_delay_ms_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + if (!dev->power.use_autosuspend) + return -EIO; + return sprintf(buf, "%d\n", dev->power.autosuspend_delay); +} + +static ssize_t autosuspend_delay_ms_store(struct device *dev, + struct device_attribute *attr, const char *buf, size_t n) +{ + long delay; + + if (!dev->power.use_autosuspend) + return -EIO; + + if (strict_strtol(buf, 10, &delay) != 0 || delay != (int) delay) + return -EINVAL; + + pm_runtime_set_autosuspend_delay(dev, delay); + return n; +} + +static DEVICE_ATTR(autosuspend_delay_ms, 0644, autosuspend_delay_ms_show, + autosuspend_delay_ms_store); + #endif static ssize_t @@ -210,11 +252,122 @@ static DEVICE_ATTR(wakeup, 0644, wake_show, wake_store); static ssize_t wakeup_count_show(struct device *dev, struct device_attribute *attr, char *buf) { - return sprintf(buf, "%lu\n", dev->power.wakeup_count); + unsigned long count = 0; + bool enabled = false; + + spin_lock_irq(&dev->power.lock); + if (dev->power.wakeup) { + count = dev->power.wakeup->event_count; + enabled = true; + } + spin_unlock_irq(&dev->power.lock); + return enabled ? sprintf(buf, "%lu\n", count) : sprintf(buf, "\n"); } static DEVICE_ATTR(wakeup_count, 0444, wakeup_count_show, NULL); -#endif + +static ssize_t wakeup_active_count_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + unsigned long count = 0; + bool enabled = false; + + spin_lock_irq(&dev->power.lock); + if (dev->power.wakeup) { + count = dev->power.wakeup->active_count; + enabled = true; + } + spin_unlock_irq(&dev->power.lock); + return enabled ? sprintf(buf, "%lu\n", count) : sprintf(buf, "\n"); +} + +static DEVICE_ATTR(wakeup_active_count, 0444, wakeup_active_count_show, NULL); + +static ssize_t wakeup_hit_count_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + unsigned long count = 0; + bool enabled = false; + + spin_lock_irq(&dev->power.lock); + if (dev->power.wakeup) { + count = dev->power.wakeup->hit_count; + enabled = true; + } + spin_unlock_irq(&dev->power.lock); + return enabled ? sprintf(buf, "%lu\n", count) : sprintf(buf, "\n"); +} + +static DEVICE_ATTR(wakeup_hit_count, 0444, wakeup_hit_count_show, NULL); + +static ssize_t wakeup_active_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + unsigned int active = 0; + bool enabled = false; + + spin_lock_irq(&dev->power.lock); + if (dev->power.wakeup) { + active = dev->power.wakeup->active; + enabled = true; + } + spin_unlock_irq(&dev->power.lock); + return enabled ? sprintf(buf, "%u\n", active) : sprintf(buf, "\n"); +} + +static DEVICE_ATTR(wakeup_active, 0444, wakeup_active_show, NULL); + +static ssize_t wakeup_total_time_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + s64 msec = 0; + bool enabled = false; + + spin_lock_irq(&dev->power.lock); + if (dev->power.wakeup) { + msec = ktime_to_ms(dev->power.wakeup->total_time); + enabled = true; + } + spin_unlock_irq(&dev->power.lock); + return enabled ? sprintf(buf, "%lld\n", msec) : sprintf(buf, "\n"); +} + +static DEVICE_ATTR(wakeup_total_time_ms, 0444, wakeup_total_time_show, NULL); + +static ssize_t wakeup_max_time_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + s64 msec = 0; + bool enabled = false; + + spin_lock_irq(&dev->power.lock); + if (dev->power.wakeup) { + msec = ktime_to_ms(dev->power.wakeup->max_time); + enabled = true; + } + spin_unlock_irq(&dev->power.lock); + return enabled ? sprintf(buf, "%lld\n", msec) : sprintf(buf, "\n"); +} + +static DEVICE_ATTR(wakeup_max_time_ms, 0444, wakeup_max_time_show, NULL); + +static ssize_t wakeup_last_time_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + s64 msec = 0; + bool enabled = false; + + spin_lock_irq(&dev->power.lock); + if (dev->power.wakeup) { + msec = ktime_to_ms(dev->power.wakeup->last_time); + enabled = true; + } + spin_unlock_irq(&dev->power.lock); + return enabled ? sprintf(buf, "%lld\n", msec) : sprintf(buf, "\n"); +} + +static DEVICE_ATTR(wakeup_last_time_ms, 0444, wakeup_last_time_show, NULL); +#endif /* CONFIG_PM_SLEEP */ #ifdef CONFIG_PM_ADVANCED_DEBUG #ifdef CONFIG_PM_RUNTIME @@ -279,19 +432,20 @@ static DEVICE_ATTR(async, 0644, async_show, async_store); #endif /* CONFIG_PM_ADVANCED_DEBUG */ static struct attribute * power_attrs[] = { -#ifdef CONFIG_PM_RUNTIME - &dev_attr_control.attr, - &dev_attr_runtime_status.attr, - &dev_attr_runtime_suspended_time.attr, - &dev_attr_runtime_active_time.attr, -#endif &dev_attr_wakeup.attr, #ifdef CONFIG_PM_SLEEP &dev_attr_wakeup_count.attr, + &dev_attr_wakeup_active_count.attr, + &dev_attr_wakeup_hit_count.attr, + &dev_attr_wakeup_active.attr, + &dev_attr_wakeup_total_time_ms.attr, + &dev_attr_wakeup_max_time_ms.attr, + &dev_attr_wakeup_last_time_ms.attr, #endif #ifdef CONFIG_PM_ADVANCED_DEBUG &dev_attr_async.attr, #ifdef CONFIG_PM_RUNTIME + &dev_attr_runtime_status.attr, &dev_attr_runtime_usage.attr, &dev_attr_runtime_active_kids.attr, &dev_attr_runtime_enabled.attr, @@ -300,10 +454,53 @@ static struct attribute * power_attrs[] = { NULL, }; static struct attribute_group pm_attr_group = { - .name = "power", + .name = power_group_name, .attrs = power_attrs, }; +#ifdef CONFIG_PM_RUNTIME + +static struct attribute *runtime_attrs[] = { +#ifndef CONFIG_PM_ADVANCED_DEBUG + &dev_attr_runtime_status.attr, +#endif + &dev_attr_control.attr, + &dev_attr_runtime_suspended_time.attr, + &dev_attr_runtime_active_time.attr, + &dev_attr_autosuspend_delay_ms.attr, + NULL, +}; +static struct attribute_group pm_runtime_attr_group = { + .name = power_group_name, + .attrs = runtime_attrs, +}; + +int dpm_sysfs_add(struct device *dev) +{ + int rc; + + rc = sysfs_create_group(&dev->kobj, &pm_attr_group); + if (rc == 0 && !dev->power.no_callbacks) { + rc = sysfs_merge_group(&dev->kobj, &pm_runtime_attr_group); + if (rc) + sysfs_remove_group(&dev->kobj, &pm_attr_group); + } + return rc; +} + +void rpm_sysfs_remove(struct device *dev) +{ + sysfs_unmerge_group(&dev->kobj, &pm_runtime_attr_group); +} + +void dpm_sysfs_remove(struct device *dev) +{ + rpm_sysfs_remove(dev); + sysfs_remove_group(&dev->kobj, &pm_attr_group); +} + +#else /* CONFIG_PM_RUNTIME */ + int dpm_sysfs_add(struct device * dev) { return sysfs_create_group(&dev->kobj, &pm_attr_group); @@ -313,3 +510,5 @@ void dpm_sysfs_remove(struct device * dev) { sysfs_remove_group(&dev->kobj, &pm_attr_group); } + +#endif diff --git a/drivers/base/power/trace.c b/drivers/base/power/trace.c index 0a1a2c4dbc6e..9f4258df4cfd 100644 --- a/drivers/base/power/trace.c +++ b/drivers/base/power/trace.c @@ -188,8 +188,10 @@ static int show_file_hash(unsigned int value) static int show_dev_hash(unsigned int value) { int match = 0; - struct list_head *entry = dpm_list.prev; + struct list_head *entry; + device_pm_lock(); + entry = dpm_list.prev; while (entry != &dpm_list) { struct device * dev = to_device(entry); unsigned int hash = hash_string(DEVSEED, dev_name(dev), DEVHASH); @@ -199,11 +201,43 @@ static int show_dev_hash(unsigned int value) } entry = entry->prev; } + device_pm_unlock(); return match; } static unsigned int hash_value_early_read; +int show_trace_dev_match(char *buf, size_t size) +{ + unsigned int value = hash_value_early_read / (USERHASH * FILEHASH); + int ret = 0; + struct list_head *entry; + + /* + * It's possible that multiple devices will match the hash and we can't + * tell which is the culprit, so it's best to output them all. + */ + device_pm_lock(); + entry = dpm_list.prev; + while (size && entry != &dpm_list) { + struct device *dev = to_device(entry); + unsigned int hash = hash_string(DEVSEED, dev_name(dev), + DEVHASH); + if (hash == value) { + int len = snprintf(buf, size, "%s\n", + dev_driver_string(dev)); + if (len > size) + len = size; + buf += len; + ret += len; + size -= len; + } + entry = entry->prev; + } + device_pm_unlock(); + return ret; +} + static int early_resume_init(void) { hash_value_early_read = read_magic_time(); diff --git a/drivers/base/power/wakeup.c b/drivers/base/power/wakeup.c index eb594facfc3f..71c5528e1c35 100644 --- a/drivers/base/power/wakeup.c +++ b/drivers/base/power/wakeup.c @@ -11,7 +11,12 @@ #include <linux/sched.h> #include <linux/capability.h> #include <linux/suspend.h> -#include <linux/pm.h> +#include <linux/seq_file.h> +#include <linux/debugfs.h> + +#include "power.h" + +#define TIMEOUT 100 /* * If set, the suspend/hibernate code will abort transitions to a sleep state @@ -20,18 +25,244 @@ bool events_check_enabled; /* The counter of registered wakeup events. */ -static unsigned long event_count; +static atomic_t event_count = ATOMIC_INIT(0); /* A preserved old value of event_count. */ -static unsigned long saved_event_count; +static unsigned int saved_count; /* The counter of wakeup events being processed. */ -static unsigned long events_in_progress; +static atomic_t events_in_progress = ATOMIC_INIT(0); static DEFINE_SPINLOCK(events_lock); static void pm_wakeup_timer_fn(unsigned long data); -static DEFINE_TIMER(events_timer, pm_wakeup_timer_fn, 0, 0); -static unsigned long events_timer_expires; +static LIST_HEAD(wakeup_sources); + +/** + * wakeup_source_create - Create a struct wakeup_source object. + * @name: Name of the new wakeup source. + */ +struct wakeup_source *wakeup_source_create(const char *name) +{ + struct wakeup_source *ws; + + ws = kzalloc(sizeof(*ws), GFP_KERNEL); + if (!ws) + return NULL; + + spin_lock_init(&ws->lock); + if (name) + ws->name = kstrdup(name, GFP_KERNEL); + + return ws; +} +EXPORT_SYMBOL_GPL(wakeup_source_create); + +/** + * wakeup_source_destroy - Destroy a struct wakeup_source object. + * @ws: Wakeup source to destroy. + */ +void wakeup_source_destroy(struct wakeup_source *ws) +{ + if (!ws) + return; + + spin_lock_irq(&ws->lock); + while (ws->active) { + spin_unlock_irq(&ws->lock); + + schedule_timeout_interruptible(msecs_to_jiffies(TIMEOUT)); + + spin_lock_irq(&ws->lock); + } + spin_unlock_irq(&ws->lock); + + kfree(ws->name); + kfree(ws); +} +EXPORT_SYMBOL_GPL(wakeup_source_destroy); + +/** + * wakeup_source_add - Add given object to the list of wakeup sources. + * @ws: Wakeup source object to add to the list. + */ +void wakeup_source_add(struct wakeup_source *ws) +{ + if (WARN_ON(!ws)) + return; + + setup_timer(&ws->timer, pm_wakeup_timer_fn, (unsigned long)ws); + ws->active = false; + + spin_lock_irq(&events_lock); + list_add_rcu(&ws->entry, &wakeup_sources); + spin_unlock_irq(&events_lock); + synchronize_rcu(); +} +EXPORT_SYMBOL_GPL(wakeup_source_add); + +/** + * wakeup_source_remove - Remove given object from the wakeup sources list. + * @ws: Wakeup source object to remove from the list. + */ +void wakeup_source_remove(struct wakeup_source *ws) +{ + if (WARN_ON(!ws)) + return; + + spin_lock_irq(&events_lock); + list_del_rcu(&ws->entry); + spin_unlock_irq(&events_lock); + synchronize_rcu(); +} +EXPORT_SYMBOL_GPL(wakeup_source_remove); + +/** + * wakeup_source_register - Create wakeup source and add it to the list. + * @name: Name of the wakeup source to register. + */ +struct wakeup_source *wakeup_source_register(const char *name) +{ + struct wakeup_source *ws; + + ws = wakeup_source_create(name); + if (ws) + wakeup_source_add(ws); + + return ws; +} +EXPORT_SYMBOL_GPL(wakeup_source_register); + +/** + * wakeup_source_unregister - Remove wakeup source from the list and remove it. + * @ws: Wakeup source object to unregister. + */ +void wakeup_source_unregister(struct wakeup_source *ws) +{ + wakeup_source_remove(ws); + wakeup_source_destroy(ws); +} +EXPORT_SYMBOL_GPL(wakeup_source_unregister); + +/** + * device_wakeup_attach - Attach a wakeup source object to a device object. + * @dev: Device to handle. + * @ws: Wakeup source object to attach to @dev. + * + * This causes @dev to be treated as a wakeup device. + */ +static int device_wakeup_attach(struct device *dev, struct wakeup_source *ws) +{ + spin_lock_irq(&dev->power.lock); + if (dev->power.wakeup) { + spin_unlock_irq(&dev->power.lock); + return -EEXIST; + } + dev->power.wakeup = ws; + spin_unlock_irq(&dev->power.lock); + return 0; +} + +/** + * device_wakeup_enable - Enable given device to be a wakeup source. + * @dev: Device to handle. + * + * Create a wakeup source object, register it and attach it to @dev. + */ +int device_wakeup_enable(struct device *dev) +{ + struct wakeup_source *ws; + int ret; + + if (!dev || !dev->power.can_wakeup) + return -EINVAL; + + ws = wakeup_source_register(dev_name(dev)); + if (!ws) + return -ENOMEM; + + ret = device_wakeup_attach(dev, ws); + if (ret) + wakeup_source_unregister(ws); + + return ret; +} +EXPORT_SYMBOL_GPL(device_wakeup_enable); + +/** + * device_wakeup_detach - Detach a device's wakeup source object from it. + * @dev: Device to detach the wakeup source object from. + * + * After it returns, @dev will not be treated as a wakeup device any more. + */ +static struct wakeup_source *device_wakeup_detach(struct device *dev) +{ + struct wakeup_source *ws; + + spin_lock_irq(&dev->power.lock); + ws = dev->power.wakeup; + dev->power.wakeup = NULL; + spin_unlock_irq(&dev->power.lock); + return ws; +} + +/** + * device_wakeup_disable - Do not regard a device as a wakeup source any more. + * @dev: Device to handle. + * + * Detach the @dev's wakeup source object from it, unregister this wakeup source + * object and destroy it. + */ +int device_wakeup_disable(struct device *dev) +{ + struct wakeup_source *ws; + + if (!dev || !dev->power.can_wakeup) + return -EINVAL; + + ws = device_wakeup_detach(dev); + if (ws) + wakeup_source_unregister(ws); + + return 0; +} +EXPORT_SYMBOL_GPL(device_wakeup_disable); + +/** + * device_init_wakeup - Device wakeup initialization. + * @dev: Device to handle. + * @enable: Whether or not to enable @dev as a wakeup device. + * + * By default, most devices should leave wakeup disabled. The exceptions are + * devices that everyone expects to be wakeup sources: keyboards, power buttons, + * possibly network interfaces, etc. + */ +int device_init_wakeup(struct device *dev, bool enable) +{ + int ret = 0; + + if (enable) { + device_set_wakeup_capable(dev, true); + ret = device_wakeup_enable(dev); + } else { + device_set_wakeup_capable(dev, false); + } + + return ret; +} +EXPORT_SYMBOL_GPL(device_init_wakeup); + +/** + * device_set_wakeup_enable - Enable or disable a device to wake up the system. + * @dev: Device to handle. + */ +int device_set_wakeup_enable(struct device *dev, bool enable) +{ + if (!dev || !dev->power.can_wakeup) + return -EINVAL; + + return enable ? device_wakeup_enable(dev) : device_wakeup_disable(dev); +} +EXPORT_SYMBOL_GPL(device_set_wakeup_enable); /* * The functions below use the observation that each wakeup event starts a @@ -55,118 +286,259 @@ static unsigned long events_timer_expires; * knowledge, however, may not be available to it, so it can simply specify time * to wait before the system can be suspended and pass it as the second * argument of pm_wakeup_event(). + * + * It is valid to call pm_relax() after pm_wakeup_event(), in which case the + * "no suspend" period will be ended either by the pm_relax(), or by the timer + * function executed when the timer expires, whichever comes first. */ /** + * wakup_source_activate - Mark given wakeup source as active. + * @ws: Wakeup source to handle. + * + * Update the @ws' statistics and, if @ws has just been activated, notify the PM + * core of the event by incrementing the counter of of wakeup events being + * processed. + */ +static void wakeup_source_activate(struct wakeup_source *ws) +{ + ws->active = true; + ws->active_count++; + ws->timer_expires = jiffies; + ws->last_time = ktime_get(); + + atomic_inc(&events_in_progress); +} + +/** + * __pm_stay_awake - Notify the PM core of a wakeup event. + * @ws: Wakeup source object associated with the source of the event. + * + * It is safe to call this function from interrupt context. + */ +void __pm_stay_awake(struct wakeup_source *ws) +{ + unsigned long flags; + + if (!ws) + return; + + spin_lock_irqsave(&ws->lock, flags); + ws->event_count++; + if (!ws->active) + wakeup_source_activate(ws); + spin_unlock_irqrestore(&ws->lock, flags); +} +EXPORT_SYMBOL_GPL(__pm_stay_awake); + +/** * pm_stay_awake - Notify the PM core that a wakeup event is being processed. * @dev: Device the wakeup event is related to. * - * Notify the PM core of a wakeup event (signaled by @dev) by incrementing the - * counter of wakeup events being processed. If @dev is not NULL, the counter - * of wakeup events related to @dev is incremented too. + * Notify the PM core of a wakeup event (signaled by @dev) by calling + * __pm_stay_awake for the @dev's wakeup source object. * * Call this function after detecting of a wakeup event if pm_relax() is going * to be called directly after processing the event (and possibly passing it to * user space for further processing). - * - * It is safe to call this function from interrupt context. */ void pm_stay_awake(struct device *dev) { unsigned long flags; - spin_lock_irqsave(&events_lock, flags); - if (dev) - dev->power.wakeup_count++; + if (!dev) + return; - events_in_progress++; - spin_unlock_irqrestore(&events_lock, flags); + spin_lock_irqsave(&dev->power.lock, flags); + __pm_stay_awake(dev->power.wakeup); + spin_unlock_irqrestore(&dev->power.lock, flags); } +EXPORT_SYMBOL_GPL(pm_stay_awake); /** - * pm_relax - Notify the PM core that processing of a wakeup event has ended. + * wakup_source_deactivate - Mark given wakeup source as inactive. + * @ws: Wakeup source to handle. * - * Notify the PM core that a wakeup event has been processed by decrementing - * the counter of wakeup events being processed and incrementing the counter - * of registered wakeup events. + * Update the @ws' statistics and notify the PM core that the wakeup source has + * become inactive by decrementing the counter of wakeup events being processed + * and incrementing the counter of registered wakeup events. + */ +static void wakeup_source_deactivate(struct wakeup_source *ws) +{ + ktime_t duration; + ktime_t now; + + ws->relax_count++; + /* + * __pm_relax() may be called directly or from a timer function. + * If it is called directly right after the timer function has been + * started, but before the timer function calls __pm_relax(), it is + * possible that __pm_stay_awake() will be called in the meantime and + * will set ws->active. Then, ws->active may be cleared immediately + * by the __pm_relax() called from the timer function, but in such a + * case ws->relax_count will be different from ws->active_count. + */ + if (ws->relax_count != ws->active_count) { + ws->relax_count--; + return; + } + + ws->active = false; + + now = ktime_get(); + duration = ktime_sub(now, ws->last_time); + ws->total_time = ktime_add(ws->total_time, duration); + if (ktime_to_ns(duration) > ktime_to_ns(ws->max_time)) + ws->max_time = duration; + + del_timer(&ws->timer); + + /* + * event_count has to be incremented before events_in_progress is + * modified, so that the callers of pm_check_wakeup_events() and + * pm_save_wakeup_count() don't see the old value of event_count and + * events_in_progress equal to zero at the same time. + */ + atomic_inc(&event_count); + smp_mb__before_atomic_dec(); + atomic_dec(&events_in_progress); +} + +/** + * __pm_relax - Notify the PM core that processing of a wakeup event has ended. + * @ws: Wakeup source object associated with the source of the event. * * Call this function for wakeup events whose processing started with calling - * pm_stay_awake(). + * __pm_stay_awake(). * * It is safe to call it from interrupt context. */ -void pm_relax(void) +void __pm_relax(struct wakeup_source *ws) { unsigned long flags; - spin_lock_irqsave(&events_lock, flags); - if (events_in_progress) { - events_in_progress--; - event_count++; - } - spin_unlock_irqrestore(&events_lock, flags); + if (!ws) + return; + + spin_lock_irqsave(&ws->lock, flags); + if (ws->active) + wakeup_source_deactivate(ws); + spin_unlock_irqrestore(&ws->lock, flags); +} +EXPORT_SYMBOL_GPL(__pm_relax); + +/** + * pm_relax - Notify the PM core that processing of a wakeup event has ended. + * @dev: Device that signaled the event. + * + * Execute __pm_relax() for the @dev's wakeup source object. + */ +void pm_relax(struct device *dev) +{ + unsigned long flags; + + if (!dev) + return; + + spin_lock_irqsave(&dev->power.lock, flags); + __pm_relax(dev->power.wakeup); + spin_unlock_irqrestore(&dev->power.lock, flags); } +EXPORT_SYMBOL_GPL(pm_relax); /** * pm_wakeup_timer_fn - Delayed finalization of a wakeup event. + * @data: Address of the wakeup source object associated with the event source. * - * Decrease the counter of wakeup events being processed after it was increased - * by pm_wakeup_event(). + * Call __pm_relax() for the wakeup source whose address is stored in @data. */ static void pm_wakeup_timer_fn(unsigned long data) { + __pm_relax((struct wakeup_source *)data); +} + +/** + * __pm_wakeup_event - Notify the PM core of a wakeup event. + * @ws: Wakeup source object associated with the event source. + * @msec: Anticipated event processing time (in milliseconds). + * + * Notify the PM core of a wakeup event whose source is @ws that will take + * approximately @msec milliseconds to be processed by the kernel. If @ws is + * not active, activate it. If @msec is nonzero, set up the @ws' timer to + * execute pm_wakeup_timer_fn() in future. + * + * It is safe to call this function from interrupt context. + */ +void __pm_wakeup_event(struct wakeup_source *ws, unsigned int msec) +{ unsigned long flags; + unsigned long expires; - spin_lock_irqsave(&events_lock, flags); - if (events_timer_expires - && time_before_eq(events_timer_expires, jiffies)) { - events_in_progress--; - events_timer_expires = 0; + if (!ws) + return; + + spin_lock_irqsave(&ws->lock, flags); + + ws->event_count++; + if (!ws->active) + wakeup_source_activate(ws); + + if (!msec) { + wakeup_source_deactivate(ws); + goto unlock; } - spin_unlock_irqrestore(&events_lock, flags); + + expires = jiffies + msecs_to_jiffies(msec); + if (!expires) + expires = 1; + + if (time_after(expires, ws->timer_expires)) { + mod_timer(&ws->timer, expires); + ws->timer_expires = expires; + } + + unlock: + spin_unlock_irqrestore(&ws->lock, flags); } +EXPORT_SYMBOL_GPL(__pm_wakeup_event); + /** * pm_wakeup_event - Notify the PM core of a wakeup event. * @dev: Device the wakeup event is related to. * @msec: Anticipated event processing time (in milliseconds). * - * Notify the PM core of a wakeup event (signaled by @dev) that will take - * approximately @msec milliseconds to be processed by the kernel. Increment - * the counter of registered wakeup events and (if @msec is nonzero) set up - * the wakeup events timer to execute pm_wakeup_timer_fn() in future (if the - * timer has not been set up already, increment the counter of wakeup events - * being processed). If @dev is not NULL, the counter of wakeup events related - * to @dev is incremented too. - * - * It is safe to call this function from interrupt context. + * Call __pm_wakeup_event() for the @dev's wakeup source object. */ void pm_wakeup_event(struct device *dev, unsigned int msec) { unsigned long flags; - spin_lock_irqsave(&events_lock, flags); - event_count++; - if (dev) - dev->power.wakeup_count++; - - if (msec) { - unsigned long expires; + if (!dev) + return; - expires = jiffies + msecs_to_jiffies(msec); - if (!expires) - expires = 1; + spin_lock_irqsave(&dev->power.lock, flags); + __pm_wakeup_event(dev->power.wakeup, msec); + spin_unlock_irqrestore(&dev->power.lock, flags); +} +EXPORT_SYMBOL_GPL(pm_wakeup_event); - if (!events_timer_expires - || time_after(expires, events_timer_expires)) { - if (!events_timer_expires) - events_in_progress++; +/** + * pm_wakeup_update_hit_counts - Update hit counts of all active wakeup sources. + */ +static void pm_wakeup_update_hit_counts(void) +{ + unsigned long flags; + struct wakeup_source *ws; - mod_timer(&events_timer, expires); - events_timer_expires = expires; - } + rcu_read_lock(); + list_for_each_entry_rcu(ws, &wakeup_sources, entry) { + spin_lock_irqsave(&ws->lock, flags); + if (ws->active) + ws->hit_count++; + spin_unlock_irqrestore(&ws->lock, flags); } - spin_unlock_irqrestore(&events_lock, flags); + rcu_read_unlock(); } /** @@ -184,10 +556,13 @@ bool pm_check_wakeup_events(void) spin_lock_irqsave(&events_lock, flags); if (events_check_enabled) { - ret = (event_count == saved_event_count) && !events_in_progress; + ret = ((unsigned int)atomic_read(&event_count) == saved_count) + && !atomic_read(&events_in_progress); events_check_enabled = ret; } spin_unlock_irqrestore(&events_lock, flags); + if (!ret) + pm_wakeup_update_hit_counts(); return ret; } @@ -202,24 +577,20 @@ bool pm_check_wakeup_events(void) * drop down to zero has been interrupted by a signal (and the current number * of wakeup events being processed is still nonzero). Otherwise return true. */ -bool pm_get_wakeup_count(unsigned long *count) +bool pm_get_wakeup_count(unsigned int *count) { bool ret; - spin_lock_irq(&events_lock); if (capable(CAP_SYS_ADMIN)) events_check_enabled = false; - while (events_in_progress && !signal_pending(current)) { - spin_unlock_irq(&events_lock); - - schedule_timeout_interruptible(msecs_to_jiffies(100)); - - spin_lock_irq(&events_lock); + while (atomic_read(&events_in_progress) && !signal_pending(current)) { + pm_wakeup_update_hit_counts(); + schedule_timeout_interruptible(msecs_to_jiffies(TIMEOUT)); } - *count = event_count; - ret = !events_in_progress; - spin_unlock_irq(&events_lock); + + ret = !atomic_read(&events_in_progress); + *count = atomic_read(&event_count); return ret; } @@ -232,16 +603,102 @@ bool pm_get_wakeup_count(unsigned long *count) * old number of registered wakeup events to be used by pm_check_wakeup_events() * and return true. Otherwise return false. */ -bool pm_save_wakeup_count(unsigned long count) +bool pm_save_wakeup_count(unsigned int count) { bool ret = false; spin_lock_irq(&events_lock); - if (count == event_count && !events_in_progress) { - saved_event_count = count; + if (count == (unsigned int)atomic_read(&event_count) + && !atomic_read(&events_in_progress)) { + saved_count = count; events_check_enabled = true; ret = true; } spin_unlock_irq(&events_lock); + if (!ret) + pm_wakeup_update_hit_counts(); + return ret; +} + +static struct dentry *wakeup_sources_stats_dentry; + +/** + * print_wakeup_source_stats - Print wakeup source statistics information. + * @m: seq_file to print the statistics into. + * @ws: Wakeup source object to print the statistics for. + */ +static int print_wakeup_source_stats(struct seq_file *m, + struct wakeup_source *ws) +{ + unsigned long flags; + ktime_t total_time; + ktime_t max_time; + unsigned long active_count; + ktime_t active_time; + int ret; + + spin_lock_irqsave(&ws->lock, flags); + + total_time = ws->total_time; + max_time = ws->max_time; + active_count = ws->active_count; + if (ws->active) { + active_time = ktime_sub(ktime_get(), ws->last_time); + total_time = ktime_add(total_time, active_time); + if (active_time.tv64 > max_time.tv64) + max_time = active_time; + } else { + active_time = ktime_set(0, 0); + } + + ret = seq_printf(m, "%-12s\t%lu\t\t%lu\t\t%lu\t\t" + "%lld\t\t%lld\t\t%lld\t\t%lld\n", + ws->name, active_count, ws->event_count, ws->hit_count, + ktime_to_ms(active_time), ktime_to_ms(total_time), + ktime_to_ms(max_time), ktime_to_ms(ws->last_time)); + + spin_unlock_irqrestore(&ws->lock, flags); + return ret; } + +/** + * wakeup_sources_stats_show - Print wakeup sources statistics information. + * @m: seq_file to print the statistics into. + */ +static int wakeup_sources_stats_show(struct seq_file *m, void *unused) +{ + struct wakeup_source *ws; + + seq_puts(m, "name\t\tactive_count\tevent_count\thit_count\t" + "active_since\ttotal_time\tmax_time\tlast_change\n"); + + rcu_read_lock(); + list_for_each_entry_rcu(ws, &wakeup_sources, entry) + print_wakeup_source_stats(m, ws); + rcu_read_unlock(); + + return 0; +} + +static int wakeup_sources_stats_open(struct inode *inode, struct file *file) +{ + return single_open(file, wakeup_sources_stats_show, NULL); +} + +static const struct file_operations wakeup_sources_stats_fops = { + .owner = THIS_MODULE, + .open = wakeup_sources_stats_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, +}; + +static int __init wakeup_sources_debugfs_init(void) +{ + wakeup_sources_stats_dentry = debugfs_create_file("wakeup_sources", + S_IRUGO, NULL, NULL, &wakeup_sources_stats_fops); + return 0; +} + +postcore_initcall(wakeup_sources_debugfs_init); diff --git a/drivers/base/topology.c b/drivers/base/topology.c index 9fc630ce1ddb..f6f37a05a0c3 100644 --- a/drivers/base/topology.c +++ b/drivers/base/topology.c @@ -45,7 +45,8 @@ static ssize_t show_##name(struct sys_device *dev, \ return sprintf(buf, "%d\n", topology_##name(cpu)); \ } -#if defined(topology_thread_cpumask) || defined(topology_core_cpumask) +#if defined(topology_thread_cpumask) || defined(topology_core_cpumask) || \ + defined(topology_book_cpumask) static ssize_t show_cpumap(int type, const struct cpumask *mask, char *buf) { ptrdiff_t len = PTR_ALIGN(buf + PAGE_SIZE - 1, PAGE_SIZE) - buf; @@ -114,6 +115,14 @@ define_siblings_show_func(core_cpumask); define_one_ro_named(core_siblings, show_core_cpumask); define_one_ro_named(core_siblings_list, show_core_cpumask_list); +#ifdef CONFIG_SCHED_BOOK +define_id_show_func(book_id); +define_one_ro(book_id); +define_siblings_show_func(book_cpumask); +define_one_ro_named(book_siblings, show_book_cpumask); +define_one_ro_named(book_siblings_list, show_book_cpumask_list); +#endif + static struct attribute *default_attrs[] = { &attr_physical_package_id.attr, &attr_core_id.attr, @@ -121,6 +130,11 @@ static struct attribute *default_attrs[] = { &attr_thread_siblings_list.attr, &attr_core_siblings.attr, &attr_core_siblings_list.attr, +#ifdef CONFIG_SCHED_BOOK + &attr_book_id.attr, + &attr_book_siblings.attr, + &attr_book_siblings_list.attr, +#endif NULL }; diff --git a/drivers/block/Kconfig b/drivers/block/Kconfig index de277689da61..4b9359a6f6ca 100644 --- a/drivers/block/Kconfig +++ b/drivers/block/Kconfig @@ -488,4 +488,21 @@ config BLK_DEV_HD If unsure, say N. +config BLK_DEV_RBD + tristate "Rados block device (RBD)" + depends on INET && EXPERIMENTAL && BLOCK + select CEPH_LIB + select LIBCRC32C + select CRYPTO_AES + select CRYPTO + default n + help + Say Y here if you want include the Rados block device, which stripes + a block device over objects stored in the Ceph distributed object + store. + + More information at http://ceph.newdream.net/. + + If unsure, say N. + endif # BLK_DEV diff --git a/drivers/block/Makefile b/drivers/block/Makefile index aff5ac925c34..d7f463d6312d 100644 --- a/drivers/block/Makefile +++ b/drivers/block/Makefile @@ -37,5 +37,6 @@ obj-$(CONFIG_BLK_DEV_HD) += hd.o obj-$(CONFIG_XEN_BLKDEV_FRONTEND) += xen-blkfront.o obj-$(CONFIG_BLK_DEV_DRBD) += drbd/ +obj-$(CONFIG_BLK_DEV_RBD) += rbd.o swim_mod-objs := swim.o swim_asm.o diff --git a/drivers/block/ps3disk.c b/drivers/block/ps3disk.c index e9da874d0419..03688c2da319 100644 --- a/drivers/block/ps3disk.c +++ b/drivers/block/ps3disk.c @@ -113,7 +113,7 @@ static void ps3disk_scatter_gather(struct ps3_storage_device *dev, memcpy(buf, dev->bounce_buf+offset, size); offset += size; flush_kernel_dcache_page(bvec->bv_page); - bvec_kunmap_irq(bvec, &flags); + bvec_kunmap_irq(buf, &flags); i++; } } diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c new file mode 100644 index 000000000000..6ec9d53806c5 --- /dev/null +++ b/drivers/block/rbd.c @@ -0,0 +1,1841 @@ +/* + rbd.c -- Export ceph rados objects as a Linux block device + + + based on drivers/block/osdblk.c: + + Copyright 2009 Red Hat, Inc. + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; see the file COPYING. If not, write to + the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. + + + + Instructions for use + -------------------- + + 1) Map a Linux block device to an existing rbd image. + + Usage: <mon ip addr> <options> <pool name> <rbd image name> [snap name] + + $ echo "192.168.0.1 name=admin rbd foo" > /sys/class/rbd/add + + The snapshot name can be "-" or omitted to map the image read/write. + + 2) List all active blkdev<->object mappings. + + In this example, we have performed step #1 twice, creating two blkdevs, + mapped to two separate rados objects in the rados rbd pool + + $ cat /sys/class/rbd/list + #id major client_name pool name snap KB + 0 254 client4143 rbd foo - 1024000 + + The columns, in order, are: + - blkdev unique id + - blkdev assigned major + - rados client id + - rados pool name + - rados block device name + - mapped snapshot ("-" if none) + - device size in KB + + + 3) Create a snapshot. + + Usage: <blkdev id> <snapname> + + $ echo "0 mysnap" > /sys/class/rbd/snap_create + + + 4) Listing a snapshot. + + $ cat /sys/class/rbd/snaps_list + #id snap KB + 0 - 1024000 (*) + 0 foo 1024000 + + The columns, in order, are: + - blkdev unique id + - snapshot name, '-' means none (active read/write version) + - size of device at time of snapshot + - the (*) indicates this is the active version + + 5) Rollback to snapshot. + + Usage: <blkdev id> <snapname> + + $ echo "0 mysnap" > /sys/class/rbd/snap_rollback + + + 6) Mapping an image using snapshot. + + A snapshot mapping is read-only. This is being done by passing + snap=<snapname> to the options when adding a device. + + $ echo "192.168.0.1 name=admin,snap=mysnap rbd foo" > /sys/class/rbd/add + + + 7) Remove an active blkdev<->rbd image mapping. + + In this example, we remove the mapping with blkdev unique id 1. + + $ echo 1 > /sys/class/rbd/remove + + + NOTE: The actual creation and deletion of rados objects is outside the scope + of this driver. + + */ + +#include <linux/ceph/libceph.h> +#include <linux/ceph/osd_client.h> +#include <linux/ceph/mon_client.h> +#include <linux/ceph/decode.h> + +#include <linux/kernel.h> +#include <linux/device.h> +#include <linux/module.h> +#include <linux/fs.h> +#include <linux/blkdev.h> + +#include "rbd_types.h" + +#define DRV_NAME "rbd" +#define DRV_NAME_LONG "rbd (rados block device)" + +#define RBD_MINORS_PER_MAJOR 256 /* max minors per blkdev */ + +#define RBD_MAX_MD_NAME_LEN (96 + sizeof(RBD_SUFFIX)) +#define RBD_MAX_POOL_NAME_LEN 64 +#define RBD_MAX_SNAP_NAME_LEN 32 +#define RBD_MAX_OPT_LEN 1024 + +#define RBD_SNAP_HEAD_NAME "-" + +#define DEV_NAME_LEN 32 + +/* + * block device image metadata (in-memory version) + */ +struct rbd_image_header { + u64 image_size; + char block_name[32]; + __u8 obj_order; + __u8 crypt_type; + __u8 comp_type; + struct rw_semaphore snap_rwsem; + struct ceph_snap_context *snapc; + size_t snap_names_len; + u64 snap_seq; + u32 total_snaps; + + char *snap_names; + u64 *snap_sizes; +}; + +/* + * an instance of the client. multiple devices may share a client. + */ +struct rbd_client { + struct ceph_client *client; + struct kref kref; + struct list_head node; +}; + +/* + * a single io request + */ +struct rbd_request { + struct request *rq; /* blk layer request */ + struct bio *bio; /* cloned bio */ + struct page **pages; /* list of used pages */ + u64 len; +}; + +/* + * a single device + */ +struct rbd_device { + int id; /* blkdev unique id */ + + int major; /* blkdev assigned major */ + struct gendisk *disk; /* blkdev's gendisk and rq */ + struct request_queue *q; + + struct ceph_client *client; + struct rbd_client *rbd_client; + + char name[DEV_NAME_LEN]; /* blkdev name, e.g. rbd3 */ + + spinlock_t lock; /* queue lock */ + + struct rbd_image_header header; + char obj[RBD_MAX_OBJ_NAME_LEN]; /* rbd image name */ + int obj_len; + char obj_md_name[RBD_MAX_MD_NAME_LEN]; /* hdr nm. */ + char pool_name[RBD_MAX_POOL_NAME_LEN]; + int poolid; + + char snap_name[RBD_MAX_SNAP_NAME_LEN]; + u32 cur_snap; /* index+1 of current snapshot within snap context + 0 - for the head */ + int read_only; + + struct list_head node; +}; + +static spinlock_t node_lock; /* protects client get/put */ + +static struct class *class_rbd; /* /sys/class/rbd */ +static DEFINE_MUTEX(ctl_mutex); /* Serialize open/close/setup/teardown */ +static LIST_HEAD(rbd_dev_list); /* devices */ +static LIST_HEAD(rbd_client_list); /* clients */ + + +static int rbd_open(struct block_device *bdev, fmode_t mode) +{ + struct gendisk *disk = bdev->bd_disk; + struct rbd_device *rbd_dev = disk->private_data; + + set_device_ro(bdev, rbd_dev->read_only); + + if ((mode & FMODE_WRITE) && rbd_dev->read_only) + return -EROFS; + + return 0; +} + +static const struct block_device_operations rbd_bd_ops = { + .owner = THIS_MODULE, + .open = rbd_open, +}; + +/* + * Initialize an rbd client instance. + * We own *opt. + */ +static struct rbd_client *rbd_client_create(struct ceph_options *opt) +{ + struct rbd_client *rbdc; + int ret = -ENOMEM; + + dout("rbd_client_create\n"); + rbdc = kmalloc(sizeof(struct rbd_client), GFP_KERNEL); + if (!rbdc) + goto out_opt; + + kref_init(&rbdc->kref); + INIT_LIST_HEAD(&rbdc->node); + + rbdc->client = ceph_create_client(opt, rbdc); + if (IS_ERR(rbdc->client)) + goto out_rbdc; + opt = NULL; /* Now rbdc->client is responsible for opt */ + + ret = ceph_open_session(rbdc->client); + if (ret < 0) + goto out_err; + + spin_lock(&node_lock); + list_add_tail(&rbdc->node, &rbd_client_list); + spin_unlock(&node_lock); + + dout("rbd_client_create created %p\n", rbdc); + return rbdc; + +out_err: + ceph_destroy_client(rbdc->client); +out_rbdc: + kfree(rbdc); +out_opt: + if (opt) + ceph_destroy_options(opt); + return ERR_PTR(ret); +} + +/* + * Find a ceph client with specific addr and configuration. + */ +static struct rbd_client *__rbd_client_find(struct ceph_options *opt) +{ + struct rbd_client *client_node; + + if (opt->flags & CEPH_OPT_NOSHARE) + return NULL; + + list_for_each_entry(client_node, &rbd_client_list, node) + if (ceph_compare_options(opt, client_node->client) == 0) + return client_node; + return NULL; +} + +/* + * Get a ceph client with specific addr and configuration, if one does + * not exist create it. + */ +static int rbd_get_client(struct rbd_device *rbd_dev, const char *mon_addr, + char *options) +{ + struct rbd_client *rbdc; + struct ceph_options *opt; + int ret; + + ret = ceph_parse_options(&opt, options, mon_addr, + mon_addr + strlen(mon_addr), NULL, NULL); + if (ret < 0) + return ret; + + spin_lock(&node_lock); + rbdc = __rbd_client_find(opt); + if (rbdc) { + ceph_destroy_options(opt); + + /* using an existing client */ + kref_get(&rbdc->kref); + rbd_dev->rbd_client = rbdc; + rbd_dev->client = rbdc->client; + spin_unlock(&node_lock); + return 0; + } + spin_unlock(&node_lock); + + rbdc = rbd_client_create(opt); + if (IS_ERR(rbdc)) + return PTR_ERR(rbdc); + + rbd_dev->rbd_client = rbdc; + rbd_dev->client = rbdc->client; + return 0; +} + +/* + * Destroy ceph client + */ +static void rbd_client_release(struct kref *kref) +{ + struct rbd_client *rbdc = container_of(kref, struct rbd_client, kref); + + dout("rbd_release_client %p\n", rbdc); + spin_lock(&node_lock); + list_del(&rbdc->node); + spin_unlock(&node_lock); + + ceph_destroy_client(rbdc->client); + kfree(rbdc); +} + +/* + * Drop reference to ceph client node. If it's not referenced anymore, release + * it. + */ +static void rbd_put_client(struct rbd_device *rbd_dev) +{ + kref_put(&rbd_dev->rbd_client->kref, rbd_client_release); + rbd_dev->rbd_client = NULL; + rbd_dev->client = NULL; +} + + +/* + * Create a new header structure, translate header format from the on-disk + * header. + */ +static int rbd_header_from_disk(struct rbd_image_header *header, + struct rbd_image_header_ondisk *ondisk, + int allocated_snaps, + gfp_t gfp_flags) +{ + int i; + u32 snap_count = le32_to_cpu(ondisk->snap_count); + int ret = -ENOMEM; + + init_rwsem(&header->snap_rwsem); + + header->snap_names_len = le64_to_cpu(ondisk->snap_names_len); + header->snapc = kmalloc(sizeof(struct ceph_snap_context) + + snap_count * + sizeof(struct rbd_image_snap_ondisk), + gfp_flags); + if (!header->snapc) + return -ENOMEM; + if (snap_count) { + header->snap_names = kmalloc(header->snap_names_len, + GFP_KERNEL); + if (!header->snap_names) + goto err_snapc; + header->snap_sizes = kmalloc(snap_count * sizeof(u64), + GFP_KERNEL); + if (!header->snap_sizes) + goto err_names; + } else { + header->snap_names = NULL; + header->snap_sizes = NULL; + } + memcpy(header->block_name, ondisk->block_name, + sizeof(ondisk->block_name)); + + header->image_size = le64_to_cpu(ondisk->image_size); + header->obj_order = ondisk->options.order; + header->crypt_type = ondisk->options.crypt_type; + header->comp_type = ondisk->options.comp_type; + + atomic_set(&header->snapc->nref, 1); + header->snap_seq = le64_to_cpu(ondisk->snap_seq); + header->snapc->num_snaps = snap_count; + header->total_snaps = snap_count; + + if (snap_count && + allocated_snaps == snap_count) { + for (i = 0; i < snap_count; i++) { + header->snapc->snaps[i] = + le64_to_cpu(ondisk->snaps[i].id); + header->snap_sizes[i] = + le64_to_cpu(ondisk->snaps[i].image_size); + } + + /* copy snapshot names */ + memcpy(header->snap_names, &ondisk->snaps[i], + header->snap_names_len); + } + + return 0; + +err_names: + kfree(header->snap_names); +err_snapc: + kfree(header->snapc); + return ret; +} + +static int snap_index(struct rbd_image_header *header, int snap_num) +{ + return header->total_snaps - snap_num; +} + +static u64 cur_snap_id(struct rbd_device *rbd_dev) +{ + struct rbd_image_header *header = &rbd_dev->header; + + if (!rbd_dev->cur_snap) + return 0; + + return header->snapc->snaps[snap_index(header, rbd_dev->cur_snap)]; +} + +static int snap_by_name(struct rbd_image_header *header, const char *snap_name, + u64 *seq, u64 *size) +{ + int i; + char *p = header->snap_names; + + for (i = 0; i < header->total_snaps; i++, p += strlen(p) + 1) { + if (strcmp(snap_name, p) == 0) + break; + } + if (i == header->total_snaps) + return -ENOENT; + if (seq) + *seq = header->snapc->snaps[i]; + + if (size) + *size = header->snap_sizes[i]; + + return i; +} + +static int rbd_header_set_snap(struct rbd_device *dev, + const char *snap_name, + u64 *size) +{ + struct rbd_image_header *header = &dev->header; + struct ceph_snap_context *snapc = header->snapc; + int ret = -ENOENT; + + down_write(&header->snap_rwsem); + + if (!snap_name || + !*snap_name || + strcmp(snap_name, "-") == 0 || + strcmp(snap_name, RBD_SNAP_HEAD_NAME) == 0) { + if (header->total_snaps) + snapc->seq = header->snap_seq; + else + snapc->seq = 0; + dev->cur_snap = 0; + dev->read_only = 0; + if (size) + *size = header->image_size; + } else { + ret = snap_by_name(header, snap_name, &snapc->seq, size); + if (ret < 0) + goto done; + + dev->cur_snap = header->total_snaps - ret; + dev->read_only = 1; + } + + ret = 0; +done: + up_write(&header->snap_rwsem); + return ret; +} + +static void rbd_header_free(struct rbd_image_header *header) +{ + kfree(header->snapc); + kfree(header->snap_names); + kfree(header->snap_sizes); +} + +/* + * get the actual striped segment name, offset and length + */ +static u64 rbd_get_segment(struct rbd_image_header *header, + const char *block_name, + u64 ofs, u64 len, + char *seg_name, u64 *segofs) +{ + u64 seg = ofs >> header->obj_order; + + if (seg_name) + snprintf(seg_name, RBD_MAX_SEG_NAME_LEN, + "%s.%012llx", block_name, seg); + + ofs = ofs & ((1 << header->obj_order) - 1); + len = min_t(u64, len, (1 << header->obj_order) - ofs); + + if (segofs) + *segofs = ofs; + + return len; +} + +/* + * bio helpers + */ + +static void bio_chain_put(struct bio *chain) +{ + struct bio *tmp; + + while (chain) { + tmp = chain; + chain = chain->bi_next; + bio_put(tmp); + } +} + +/* + * zeros a bio chain, starting at specific offset + */ +static void zero_bio_chain(struct bio *chain, int start_ofs) +{ + struct bio_vec *bv; + unsigned long flags; + void *buf; + int i; + int pos = 0; + + while (chain) { + bio_for_each_segment(bv, chain, i) { + if (pos + bv->bv_len > start_ofs) { + int remainder = max(start_ofs - pos, 0); + buf = bvec_kmap_irq(bv, &flags); + memset(buf + remainder, 0, + bv->bv_len - remainder); + bvec_kunmap_irq(buf, &flags); + } + pos += bv->bv_len; + } + + chain = chain->bi_next; + } +} + +/* + * bio_chain_clone - clone a chain of bios up to a certain length. + * might return a bio_pair that will need to be released. + */ +static struct bio *bio_chain_clone(struct bio **old, struct bio **next, + struct bio_pair **bp, + int len, gfp_t gfpmask) +{ + struct bio *tmp, *old_chain = *old, *new_chain = NULL, *tail = NULL; + int total = 0; + + if (*bp) { + bio_pair_release(*bp); + *bp = NULL; + } + + while (old_chain && (total < len)) { + tmp = bio_kmalloc(gfpmask, old_chain->bi_max_vecs); + if (!tmp) + goto err_out; + + if (total + old_chain->bi_size > len) { + struct bio_pair *bp; + + /* + * this split can only happen with a single paged bio, + * split_bio will BUG_ON if this is not the case + */ + dout("bio_chain_clone split! total=%d remaining=%d" + "bi_size=%d\n", + (int)total, (int)len-total, + (int)old_chain->bi_size); + + /* split the bio. We'll release it either in the next + call, or it will have to be released outside */ + bp = bio_split(old_chain, (len - total) / 512ULL); + if (!bp) + goto err_out; + + __bio_clone(tmp, &bp->bio1); + + *next = &bp->bio2; + } else { + __bio_clone(tmp, old_chain); + *next = old_chain->bi_next; + } + + tmp->bi_bdev = NULL; + gfpmask &= ~__GFP_WAIT; + tmp->bi_next = NULL; + + if (!new_chain) { + new_chain = tail = tmp; + } else { + tail->bi_next = tmp; + tail = tmp; + } + old_chain = old_chain->bi_next; + + total += tmp->bi_size; + } + + BUG_ON(total < len); + + if (tail) + tail->bi_next = NULL; + + *old = old_chain; + + return new_chain; + +err_out: + dout("bio_chain_clone with err\n"); + bio_chain_put(new_chain); + return NULL; +} + +/* + * helpers for osd request op vectors. + */ +static int rbd_create_rw_ops(struct ceph_osd_req_op **ops, + int num_ops, + int opcode, + u32 payload_len) +{ + *ops = kzalloc(sizeof(struct ceph_osd_req_op) * (num_ops + 1), + GFP_NOIO); + if (!*ops) + return -ENOMEM; + (*ops)[0].op = opcode; + /* + * op extent offset and length will be set later on + * in calc_raw_layout() + */ + (*ops)[0].payload_len = payload_len; + return 0; +} + +static void rbd_destroy_ops(struct ceph_osd_req_op *ops) +{ + kfree(ops); +} + +/* + * Send ceph osd request + */ +static int rbd_do_request(struct request *rq, + struct rbd_device *dev, + struct ceph_snap_context *snapc, + u64 snapid, + const char *obj, u64 ofs, u64 len, + struct bio *bio, + struct page **pages, + int num_pages, + int flags, + struct ceph_osd_req_op *ops, + int num_reply, + void (*rbd_cb)(struct ceph_osd_request *req, + struct ceph_msg *msg)) +{ + struct ceph_osd_request *req; + struct ceph_file_layout *layout; + int ret; + u64 bno; + struct timespec mtime = CURRENT_TIME; + struct rbd_request *req_data; + struct ceph_osd_request_head *reqhead; + struct rbd_image_header *header = &dev->header; + + ret = -ENOMEM; + req_data = kzalloc(sizeof(*req_data), GFP_NOIO); + if (!req_data) + goto done; + + dout("rbd_do_request len=%lld ofs=%lld\n", len, ofs); + + down_read(&header->snap_rwsem); + + req = ceph_osdc_alloc_request(&dev->client->osdc, flags, + snapc, + ops, + false, + GFP_NOIO, pages, bio); + if (IS_ERR(req)) { + up_read(&header->snap_rwsem); + ret = PTR_ERR(req); + goto done_pages; + } + + req->r_callback = rbd_cb; + + req_data->rq = rq; + req_data->bio = bio; + req_data->pages = pages; + req_data->len = len; + + req->r_priv = req_data; + + reqhead = req->r_request->front.iov_base; + reqhead->snapid = cpu_to_le64(CEPH_NOSNAP); + + strncpy(req->r_oid, obj, sizeof(req->r_oid)); + req->r_oid_len = strlen(req->r_oid); + + layout = &req->r_file_layout; + memset(layout, 0, sizeof(*layout)); + layout->fl_stripe_unit = cpu_to_le32(1 << RBD_MAX_OBJ_ORDER); + layout->fl_stripe_count = cpu_to_le32(1); + layout->fl_object_size = cpu_to_le32(1 << RBD_MAX_OBJ_ORDER); + layout->fl_pg_preferred = cpu_to_le32(-1); + layout->fl_pg_pool = cpu_to_le32(dev->poolid); + ceph_calc_raw_layout(&dev->client->osdc, layout, snapid, + ofs, &len, &bno, req, ops); + + ceph_osdc_build_request(req, ofs, &len, + ops, + snapc, + &mtime, + req->r_oid, req->r_oid_len); + up_read(&header->snap_rwsem); + + ret = ceph_osdc_start_request(&dev->client->osdc, req, false); + if (ret < 0) + goto done_err; + + if (!rbd_cb) { + ret = ceph_osdc_wait_request(&dev->client->osdc, req); + ceph_osdc_put_request(req); + } + return ret; + +done_err: + bio_chain_put(req_data->bio); + ceph_osdc_put_request(req); +done_pages: + kfree(req_data); +done: + if (rq) + blk_end_request(rq, ret, len); + return ret; +} + +/* + * Ceph osd op callback + */ +static void rbd_req_cb(struct ceph_osd_request *req, struct ceph_msg *msg) +{ + struct rbd_request *req_data = req->r_priv; + struct ceph_osd_reply_head *replyhead; + struct ceph_osd_op *op; + __s32 rc; + u64 bytes; + int read_op; + + /* parse reply */ + replyhead = msg->front.iov_base; + WARN_ON(le32_to_cpu(replyhead->num_ops) == 0); + op = (void *)(replyhead + 1); + rc = le32_to_cpu(replyhead->result); + bytes = le64_to_cpu(op->extent.length); + read_op = (le32_to_cpu(op->op) == CEPH_OSD_OP_READ); + + dout("rbd_req_cb bytes=%lld readop=%d rc=%d\n", bytes, read_op, rc); + + if (rc == -ENOENT && read_op) { + zero_bio_chain(req_data->bio, 0); + rc = 0; + } else if (rc == 0 && read_op && bytes < req_data->len) { + zero_bio_chain(req_data->bio, bytes); + bytes = req_data->len; + } + + blk_end_request(req_data->rq, rc, bytes); + + if (req_data->bio) + bio_chain_put(req_data->bio); + + ceph_osdc_put_request(req); + kfree(req_data); +} + +/* + * Do a synchronous ceph osd operation + */ +static int rbd_req_sync_op(struct rbd_device *dev, + struct ceph_snap_context *snapc, + u64 snapid, + int opcode, + int flags, + struct ceph_osd_req_op *orig_ops, + int num_reply, + const char *obj, + u64 ofs, u64 len, + char *buf) +{ + int ret; + struct page **pages; + int num_pages; + struct ceph_osd_req_op *ops = orig_ops; + u32 payload_len; + + num_pages = calc_pages_for(ofs , len); + pages = ceph_alloc_page_vector(num_pages, GFP_KERNEL); + if (IS_ERR(pages)) + return PTR_ERR(pages); + + if (!orig_ops) { + payload_len = (flags & CEPH_OSD_FLAG_WRITE ? len : 0); + ret = rbd_create_rw_ops(&ops, 1, opcode, payload_len); + if (ret < 0) + goto done; + + if ((flags & CEPH_OSD_FLAG_WRITE) && buf) { + ret = ceph_copy_to_page_vector(pages, buf, ofs, len); + if (ret < 0) + goto done_ops; + } + } + + ret = rbd_do_request(NULL, dev, snapc, snapid, + obj, ofs, len, NULL, + pages, num_pages, + flags, + ops, + 2, + NULL); + if (ret < 0) + goto done_ops; + + if ((flags & CEPH_OSD_FLAG_READ) && buf) + ret = ceph_copy_from_page_vector(pages, buf, ofs, ret); + +done_ops: + if (!orig_ops) + rbd_destroy_ops(ops); +done: + ceph_release_page_vector(pages, num_pages); + return ret; +} + +/* + * Do an asynchronous ceph osd operation + */ +static int rbd_do_op(struct request *rq, + struct rbd_device *rbd_dev , + struct ceph_snap_context *snapc, + u64 snapid, + int opcode, int flags, int num_reply, + u64 ofs, u64 len, + struct bio *bio) +{ + char *seg_name; + u64 seg_ofs; + u64 seg_len; + int ret; + struct ceph_osd_req_op *ops; + u32 payload_len; + + seg_name = kmalloc(RBD_MAX_SEG_NAME_LEN + 1, GFP_NOIO); + if (!seg_name) + return -ENOMEM; + + seg_len = rbd_get_segment(&rbd_dev->header, + rbd_dev->header.block_name, + ofs, len, + seg_name, &seg_ofs); + + payload_len = (flags & CEPH_OSD_FLAG_WRITE ? seg_len : 0); + + ret = rbd_create_rw_ops(&ops, 1, opcode, payload_len); + if (ret < 0) + goto done; + + /* we've taken care of segment sizes earlier when we + cloned the bios. We should never have a segment + truncated at this point */ + BUG_ON(seg_len < len); + + ret = rbd_do_request(rq, rbd_dev, snapc, snapid, + seg_name, seg_ofs, seg_len, + bio, + NULL, 0, + flags, + ops, + num_reply, + rbd_req_cb); +done: + kfree(seg_name); + return ret; +} + +/* + * Request async osd write + */ +static int rbd_req_write(struct request *rq, + struct rbd_device *rbd_dev, + struct ceph_snap_context *snapc, + u64 ofs, u64 len, + struct bio *bio) +{ + return rbd_do_op(rq, rbd_dev, snapc, CEPH_NOSNAP, + CEPH_OSD_OP_WRITE, + CEPH_OSD_FLAG_WRITE | CEPH_OSD_FLAG_ONDISK, + 2, + ofs, len, bio); +} + +/* + * Request async osd read + */ +static int rbd_req_read(struct request *rq, + struct rbd_device *rbd_dev, + u64 snapid, + u64 ofs, u64 len, + struct bio *bio) +{ + return rbd_do_op(rq, rbd_dev, NULL, + (snapid ? snapid : CEPH_NOSNAP), + CEPH_OSD_OP_READ, + CEPH_OSD_FLAG_READ, + 2, + ofs, len, bio); +} + +/* + * Request sync osd read + */ +static int rbd_req_sync_read(struct rbd_device *dev, + struct ceph_snap_context *snapc, + u64 snapid, + const char *obj, + u64 ofs, u64 len, + char *buf) +{ + return rbd_req_sync_op(dev, NULL, + (snapid ? snapid : CEPH_NOSNAP), + CEPH_OSD_OP_READ, + CEPH_OSD_FLAG_READ, + NULL, + 1, obj, ofs, len, buf); +} + +/* + * Request sync osd read + */ +static int rbd_req_sync_rollback_obj(struct rbd_device *dev, + u64 snapid, + const char *obj) +{ + struct ceph_osd_req_op *ops; + int ret = rbd_create_rw_ops(&ops, 1, CEPH_OSD_OP_ROLLBACK, 0); + if (ret < 0) + return ret; + + ops[0].snap.snapid = snapid; + + ret = rbd_req_sync_op(dev, NULL, + CEPH_NOSNAP, + 0, + CEPH_OSD_FLAG_WRITE | CEPH_OSD_FLAG_ONDISK, + ops, + 1, obj, 0, 0, NULL); + + rbd_destroy_ops(ops); + + if (ret < 0) + return ret; + + return ret; +} + +/* + * Request sync osd read + */ +static int rbd_req_sync_exec(struct rbd_device *dev, + const char *obj, + const char *cls, + const char *method, + const char *data, + int len) +{ + struct ceph_osd_req_op *ops; + int cls_len = strlen(cls); + int method_len = strlen(method); + int ret = rbd_create_rw_ops(&ops, 1, CEPH_OSD_OP_CALL, + cls_len + method_len + len); + if (ret < 0) + return ret; + + ops[0].cls.class_name = cls; + ops[0].cls.class_len = (__u8)cls_len; + ops[0].cls.method_name = method; + ops[0].cls.method_len = (__u8)method_len; + ops[0].cls.argc = 0; + ops[0].cls.indata = data; + ops[0].cls.indata_len = len; + + ret = rbd_req_sync_op(dev, NULL, + CEPH_NOSNAP, + 0, + CEPH_OSD_FLAG_WRITE | CEPH_OSD_FLAG_ONDISK, + ops, + 1, obj, 0, 0, NULL); + + rbd_destroy_ops(ops); + + dout("cls_exec returned %d\n", ret); + return ret; +} + +/* + * block device queue callback + */ +static void rbd_rq_fn(struct request_queue *q) +{ + struct rbd_device *rbd_dev = q->queuedata; + struct request *rq; + struct bio_pair *bp = NULL; + + rq = blk_fetch_request(q); + + while (1) { + struct bio *bio; + struct bio *rq_bio, *next_bio = NULL; + bool do_write; + int size, op_size = 0; + u64 ofs; + + /* peek at request from block layer */ + if (!rq) + break; + + dout("fetched request\n"); + + /* filter out block requests we don't understand */ + if ((rq->cmd_type != REQ_TYPE_FS)) { + __blk_end_request_all(rq, 0); + goto next; + } + + /* deduce our operation (read, write) */ + do_write = (rq_data_dir(rq) == WRITE); + + size = blk_rq_bytes(rq); + ofs = blk_rq_pos(rq) * 512ULL; + rq_bio = rq->bio; + if (do_write && rbd_dev->read_only) { + __blk_end_request_all(rq, -EROFS); + goto next; + } + + spin_unlock_irq(q->queue_lock); + + dout("%s 0x%x bytes at 0x%llx\n", + do_write ? "write" : "read", + size, blk_rq_pos(rq) * 512ULL); + + do { + /* a bio clone to be passed down to OSD req */ + dout("rq->bio->bi_vcnt=%d\n", rq->bio->bi_vcnt); + op_size = rbd_get_segment(&rbd_dev->header, + rbd_dev->header.block_name, + ofs, size, + NULL, NULL); + bio = bio_chain_clone(&rq_bio, &next_bio, &bp, + op_size, GFP_ATOMIC); + if (!bio) { + spin_lock_irq(q->queue_lock); + __blk_end_request_all(rq, -ENOMEM); + goto next; + } + + /* init OSD command: write or read */ + if (do_write) + rbd_req_write(rq, rbd_dev, + rbd_dev->header.snapc, + ofs, + op_size, bio); + else + rbd_req_read(rq, rbd_dev, + cur_snap_id(rbd_dev), + ofs, + op_size, bio); + + size -= op_size; + ofs += op_size; + + rq_bio = next_bio; + } while (size > 0); + + if (bp) + bio_pair_release(bp); + + spin_lock_irq(q->queue_lock); +next: + rq = blk_fetch_request(q); + } +} + +/* + * a queue callback. Makes sure that we don't create a bio that spans across + * multiple osd objects. One exception would be with a single page bios, + * which we handle later at bio_chain_clone + */ +static int rbd_merge_bvec(struct request_queue *q, struct bvec_merge_data *bmd, + struct bio_vec *bvec) +{ + struct rbd_device *rbd_dev = q->queuedata; + unsigned int chunk_sectors = 1 << (rbd_dev->header.obj_order - 9); + sector_t sector = bmd->bi_sector + get_start_sect(bmd->bi_bdev); + unsigned int bio_sectors = bmd->bi_size >> 9; + int max; + + max = (chunk_sectors - ((sector & (chunk_sectors - 1)) + + bio_sectors)) << 9; + if (max < 0) + max = 0; /* bio_add cannot handle a negative return */ + if (max <= bvec->bv_len && bio_sectors == 0) + return bvec->bv_len; + return max; +} + +static void rbd_free_disk(struct rbd_device *rbd_dev) +{ + struct gendisk *disk = rbd_dev->disk; + + if (!disk) + return; + + rbd_header_free(&rbd_dev->header); + + if (disk->flags & GENHD_FL_UP) + del_gendisk(disk); + if (disk->queue) + blk_cleanup_queue(disk->queue); + put_disk(disk); +} + +/* + * reload the ondisk the header + */ +static int rbd_read_header(struct rbd_device *rbd_dev, + struct rbd_image_header *header) +{ + ssize_t rc; + struct rbd_image_header_ondisk *dh; + int snap_count = 0; + u64 snap_names_len = 0; + + while (1) { + int len = sizeof(*dh) + + snap_count * sizeof(struct rbd_image_snap_ondisk) + + snap_names_len; + + rc = -ENOMEM; + dh = kmalloc(len, GFP_KERNEL); + if (!dh) + return -ENOMEM; + + rc = rbd_req_sync_read(rbd_dev, + NULL, CEPH_NOSNAP, + rbd_dev->obj_md_name, + 0, len, + (char *)dh); + if (rc < 0) + goto out_dh; + + rc = rbd_header_from_disk(header, dh, snap_count, GFP_KERNEL); + if (rc < 0) + goto out_dh; + + if (snap_count != header->total_snaps) { + snap_count = header->total_snaps; + snap_names_len = header->snap_names_len; + rbd_header_free(header); + kfree(dh); + continue; + } + break; + } + +out_dh: + kfree(dh); + return rc; +} + +/* + * create a snapshot + */ +static int rbd_header_add_snap(struct rbd_device *dev, + const char *snap_name, + gfp_t gfp_flags) +{ + int name_len = strlen(snap_name); + u64 new_snapid; + int ret; + void *data, *data_start, *data_end; + + /* we should create a snapshot only if we're pointing at the head */ + if (dev->cur_snap) + return -EINVAL; + + ret = ceph_monc_create_snapid(&dev->client->monc, dev->poolid, + &new_snapid); + dout("created snapid=%lld\n", new_snapid); + if (ret < 0) + return ret; + + data = kmalloc(name_len + 16, gfp_flags); + if (!data) + return -ENOMEM; + + data_start = data; + data_end = data + name_len + 16; + + ceph_encode_string_safe(&data, data_end, snap_name, name_len, bad); + ceph_encode_64_safe(&data, data_end, new_snapid, bad); + + ret = rbd_req_sync_exec(dev, dev->obj_md_name, "rbd", "snap_add", + data_start, data - data_start); + + kfree(data_start); + + if (ret < 0) + return ret; + + dev->header.snapc->seq = new_snapid; + + return 0; +bad: + return -ERANGE; +} + +/* + * only read the first part of the ondisk header, without the snaps info + */ +static int rbd_update_snaps(struct rbd_device *rbd_dev) +{ + int ret; + struct rbd_image_header h; + u64 snap_seq; + + ret = rbd_read_header(rbd_dev, &h); + if (ret < 0) + return ret; + + down_write(&rbd_dev->header.snap_rwsem); + + snap_seq = rbd_dev->header.snapc->seq; + + kfree(rbd_dev->header.snapc); + kfree(rbd_dev->header.snap_names); + kfree(rbd_dev->header.snap_sizes); + + rbd_dev->header.total_snaps = h.total_snaps; + rbd_dev->header.snapc = h.snapc; + rbd_dev->header.snap_names = h.snap_names; + rbd_dev->header.snap_sizes = h.snap_sizes; + rbd_dev->header.snapc->seq = snap_seq; + + up_write(&rbd_dev->header.snap_rwsem); + + return 0; +} + +static int rbd_init_disk(struct rbd_device *rbd_dev) +{ + struct gendisk *disk; + struct request_queue *q; + int rc; + u64 total_size = 0; + + /* contact OSD, request size info about the object being mapped */ + rc = rbd_read_header(rbd_dev, &rbd_dev->header); + if (rc) + return rc; + + rc = rbd_header_set_snap(rbd_dev, rbd_dev->snap_name, &total_size); + if (rc) + return rc; + + /* create gendisk info */ + rc = -ENOMEM; + disk = alloc_disk(RBD_MINORS_PER_MAJOR); + if (!disk) + goto out; + + sprintf(disk->disk_name, DRV_NAME "%d", rbd_dev->id); + disk->major = rbd_dev->major; + disk->first_minor = 0; + disk->fops = &rbd_bd_ops; + disk->private_data = rbd_dev; + + /* init rq */ + rc = -ENOMEM; + q = blk_init_queue(rbd_rq_fn, &rbd_dev->lock); + if (!q) + goto out_disk; + blk_queue_merge_bvec(q, rbd_merge_bvec); + disk->queue = q; + + q->queuedata = rbd_dev; + + rbd_dev->disk = disk; + rbd_dev->q = q; + + /* finally, announce the disk to the world */ + set_capacity(disk, total_size / 512ULL); + add_disk(disk); + + pr_info("%s: added with size 0x%llx\n", + disk->disk_name, (unsigned long long)total_size); + return 0; + +out_disk: + put_disk(disk); +out: + return rc; +} + +/******************************************************************** + * /sys/class/rbd/ + * add map rados objects to blkdev + * remove unmap rados objects + * list show mappings + *******************************************************************/ + +static void class_rbd_release(struct class *cls) +{ + kfree(cls); +} + +static ssize_t class_rbd_list(struct class *c, + struct class_attribute *attr, + char *data) +{ + int n = 0; + struct list_head *tmp; + int max = PAGE_SIZE; + + mutex_lock_nested(&ctl_mutex, SINGLE_DEPTH_NESTING); + + n += snprintf(data, max, + "#id\tmajor\tclient_name\tpool\tname\tsnap\tKB\n"); + + list_for_each(tmp, &rbd_dev_list) { + struct rbd_device *rbd_dev; + + rbd_dev = list_entry(tmp, struct rbd_device, node); + n += snprintf(data+n, max-n, + "%d\t%d\tclient%lld\t%s\t%s\t%s\t%lld\n", + rbd_dev->id, + rbd_dev->major, + ceph_client_id(rbd_dev->client), + rbd_dev->pool_name, + rbd_dev->obj, rbd_dev->snap_name, + rbd_dev->header.image_size >> 10); + if (n == max) + break; + } + + mutex_unlock(&ctl_mutex); + return n; +} + +static ssize_t class_rbd_add(struct class *c, + struct class_attribute *attr, + const char *buf, size_t count) +{ + struct ceph_osd_client *osdc; + struct rbd_device *rbd_dev; + ssize_t rc = -ENOMEM; + int irc, new_id = 0; + struct list_head *tmp; + char *mon_dev_name; + char *options; + + if (!try_module_get(THIS_MODULE)) + return -ENODEV; + + mon_dev_name = kmalloc(RBD_MAX_OPT_LEN, GFP_KERNEL); + if (!mon_dev_name) + goto err_out_mod; + + options = kmalloc(RBD_MAX_OPT_LEN, GFP_KERNEL); + if (!options) + goto err_mon_dev; + + /* new rbd_device object */ + rbd_dev = kzalloc(sizeof(*rbd_dev), GFP_KERNEL); + if (!rbd_dev) + goto err_out_opt; + + /* static rbd_device initialization */ + spin_lock_init(&rbd_dev->lock); + INIT_LIST_HEAD(&rbd_dev->node); + + /* generate unique id: find highest unique id, add one */ + mutex_lock_nested(&ctl_mutex, SINGLE_DEPTH_NESTING); + + list_for_each(tmp, &rbd_dev_list) { + struct rbd_device *rbd_dev; + + rbd_dev = list_entry(tmp, struct rbd_device, node); + if (rbd_dev->id >= new_id) + new_id = rbd_dev->id + 1; + } + + rbd_dev->id = new_id; + + /* add to global list */ + list_add_tail(&rbd_dev->node, &rbd_dev_list); + + /* parse add command */ + if (sscanf(buf, "%" __stringify(RBD_MAX_OPT_LEN) "s " + "%" __stringify(RBD_MAX_OPT_LEN) "s " + "%" __stringify(RBD_MAX_POOL_NAME_LEN) "s " + "%" __stringify(RBD_MAX_OBJ_NAME_LEN) "s" + "%" __stringify(RBD_MAX_SNAP_NAME_LEN) "s", + mon_dev_name, options, rbd_dev->pool_name, + rbd_dev->obj, rbd_dev->snap_name) < 4) { + rc = -EINVAL; + goto err_out_slot; + } + + if (rbd_dev->snap_name[0] == 0) + rbd_dev->snap_name[0] = '-'; + + rbd_dev->obj_len = strlen(rbd_dev->obj); + snprintf(rbd_dev->obj_md_name, sizeof(rbd_dev->obj_md_name), "%s%s", + rbd_dev->obj, RBD_SUFFIX); + + /* initialize rest of new object */ + snprintf(rbd_dev->name, DEV_NAME_LEN, DRV_NAME "%d", rbd_dev->id); + rc = rbd_get_client(rbd_dev, mon_dev_name, options); + if (rc < 0) + goto err_out_slot; + + mutex_unlock(&ctl_mutex); + + /* pick the pool */ + osdc = &rbd_dev->client->osdc; + rc = ceph_pg_poolid_by_name(osdc->osdmap, rbd_dev->pool_name); + if (rc < 0) + goto err_out_client; + rbd_dev->poolid = rc; + + /* register our block device */ + irc = register_blkdev(0, rbd_dev->name); + if (irc < 0) { + rc = irc; + goto err_out_client; + } + rbd_dev->major = irc; + + /* set up and announce blkdev mapping */ + rc = rbd_init_disk(rbd_dev); + if (rc) + goto err_out_blkdev; + + return count; + +err_out_blkdev: + unregister_blkdev(rbd_dev->major, rbd_dev->name); +err_out_client: + rbd_put_client(rbd_dev); + mutex_lock_nested(&ctl_mutex, SINGLE_DEPTH_NESTING); +err_out_slot: + list_del_init(&rbd_dev->node); + mutex_unlock(&ctl_mutex); + + kfree(rbd_dev); +err_out_opt: + kfree(options); +err_mon_dev: + kfree(mon_dev_name); +err_out_mod: + dout("Error adding device %s\n", buf); + module_put(THIS_MODULE); + return rc; +} + +static struct rbd_device *__rbd_get_dev(unsigned long id) +{ + struct list_head *tmp; + struct rbd_device *rbd_dev; + + list_for_each(tmp, &rbd_dev_list) { + rbd_dev = list_entry(tmp, struct rbd_device, node); + if (rbd_dev->id == id) + return rbd_dev; + } + return NULL; +} + +static ssize_t class_rbd_remove(struct class *c, + struct class_attribute *attr, + const char *buf, + size_t count) +{ + struct rbd_device *rbd_dev = NULL; + int target_id, rc; + unsigned long ul; + + rc = strict_strtoul(buf, 10, &ul); + if (rc) + return rc; + + /* convert to int; abort if we lost anything in the conversion */ + target_id = (int) ul; + if (target_id != ul) + return -EINVAL; + + /* remove object from list immediately */ + mutex_lock_nested(&ctl_mutex, SINGLE_DEPTH_NESTING); + + rbd_dev = __rbd_get_dev(target_id); + if (rbd_dev) + list_del_init(&rbd_dev->node); + + mutex_unlock(&ctl_mutex); + + if (!rbd_dev) + return -ENOENT; + + rbd_put_client(rbd_dev); + + /* clean up and free blkdev */ + rbd_free_disk(rbd_dev); + unregister_blkdev(rbd_dev->major, rbd_dev->name); + kfree(rbd_dev); + + /* release module ref */ + module_put(THIS_MODULE); + + return count; +} + +static ssize_t class_rbd_snaps_list(struct class *c, + struct class_attribute *attr, + char *data) +{ + struct rbd_device *rbd_dev = NULL; + struct list_head *tmp; + struct rbd_image_header *header; + int i, n = 0, max = PAGE_SIZE; + int ret; + + mutex_lock_nested(&ctl_mutex, SINGLE_DEPTH_NESTING); + + n += snprintf(data, max, "#id\tsnap\tKB\n"); + + list_for_each(tmp, &rbd_dev_list) { + char *names, *p; + struct ceph_snap_context *snapc; + + rbd_dev = list_entry(tmp, struct rbd_device, node); + header = &rbd_dev->header; + + down_read(&header->snap_rwsem); + + names = header->snap_names; + snapc = header->snapc; + + n += snprintf(data + n, max - n, "%d\t%s\t%lld%s\n", + rbd_dev->id, RBD_SNAP_HEAD_NAME, + header->image_size >> 10, + (!rbd_dev->cur_snap ? " (*)" : "")); + if (n == max) + break; + + p = names; + for (i = 0; i < header->total_snaps; i++, p += strlen(p) + 1) { + n += snprintf(data + n, max - n, "%d\t%s\t%lld%s\n", + rbd_dev->id, p, header->snap_sizes[i] >> 10, + (rbd_dev->cur_snap && + (snap_index(header, i) == rbd_dev->cur_snap) ? + " (*)" : "")); + if (n == max) + break; + } + + up_read(&header->snap_rwsem); + } + + + ret = n; + mutex_unlock(&ctl_mutex); + return ret; +} + +static ssize_t class_rbd_snaps_refresh(struct class *c, + struct class_attribute *attr, + const char *buf, + size_t count) +{ + struct rbd_device *rbd_dev = NULL; + int target_id, rc; + unsigned long ul; + int ret = count; + + rc = strict_strtoul(buf, 10, &ul); + if (rc) + return rc; + + /* convert to int; abort if we lost anything in the conversion */ + target_id = (int) ul; + if (target_id != ul) + return -EINVAL; + + mutex_lock_nested(&ctl_mutex, SINGLE_DEPTH_NESTING); + + rbd_dev = __rbd_get_dev(target_id); + if (!rbd_dev) { + ret = -ENOENT; + goto done; + } + + rc = rbd_update_snaps(rbd_dev); + if (rc < 0) + ret = rc; + +done: + mutex_unlock(&ctl_mutex); + return ret; +} + +static ssize_t class_rbd_snap_create(struct class *c, + struct class_attribute *attr, + const char *buf, + size_t count) +{ + struct rbd_device *rbd_dev = NULL; + int target_id, ret; + char *name; + + name = kmalloc(RBD_MAX_SNAP_NAME_LEN + 1, GFP_KERNEL); + if (!name) + return -ENOMEM; + + /* parse snaps add command */ + if (sscanf(buf, "%d " + "%" __stringify(RBD_MAX_SNAP_NAME_LEN) "s", + &target_id, + name) != 2) { + ret = -EINVAL; + goto done; + } + + mutex_lock_nested(&ctl_mutex, SINGLE_DEPTH_NESTING); + + rbd_dev = __rbd_get_dev(target_id); + if (!rbd_dev) { + ret = -ENOENT; + goto done_unlock; + } + + ret = rbd_header_add_snap(rbd_dev, + name, GFP_KERNEL); + if (ret < 0) + goto done_unlock; + + ret = rbd_update_snaps(rbd_dev); + if (ret < 0) + goto done_unlock; + + ret = count; +done_unlock: + mutex_unlock(&ctl_mutex); +done: + kfree(name); + return ret; +} + +static ssize_t class_rbd_rollback(struct class *c, + struct class_attribute *attr, + const char *buf, + size_t count) +{ + struct rbd_device *rbd_dev = NULL; + int target_id, ret; + u64 snapid; + char snap_name[RBD_MAX_SNAP_NAME_LEN]; + u64 cur_ofs; + char *seg_name; + + /* parse snaps add command */ + if (sscanf(buf, "%d " + "%" __stringify(RBD_MAX_SNAP_NAME_LEN) "s", + &target_id, + snap_name) != 2) { + return -EINVAL; + } + + ret = -ENOMEM; + seg_name = kmalloc(RBD_MAX_SEG_NAME_LEN + 1, GFP_NOIO); + if (!seg_name) + return ret; + + mutex_lock_nested(&ctl_mutex, SINGLE_DEPTH_NESTING); + + rbd_dev = __rbd_get_dev(target_id); + if (!rbd_dev) { + ret = -ENOENT; + goto done_unlock; + } + + ret = snap_by_name(&rbd_dev->header, snap_name, &snapid, NULL); + if (ret < 0) + goto done_unlock; + + dout("snapid=%lld\n", snapid); + + cur_ofs = 0; + while (cur_ofs < rbd_dev->header.image_size) { + cur_ofs += rbd_get_segment(&rbd_dev->header, + rbd_dev->obj, + cur_ofs, (u64)-1, + seg_name, NULL); + dout("seg_name=%s\n", seg_name); + + ret = rbd_req_sync_rollback_obj(rbd_dev, snapid, seg_name); + if (ret < 0) + pr_warning("could not roll back obj %s err=%d\n", + seg_name, ret); + } + + ret = rbd_update_snaps(rbd_dev); + if (ret < 0) + goto done_unlock; + + ret = count; + +done_unlock: + mutex_unlock(&ctl_mutex); + kfree(seg_name); + + return ret; +} + +static struct class_attribute class_rbd_attrs[] = { + __ATTR(add, 0200, NULL, class_rbd_add), + __ATTR(remove, 0200, NULL, class_rbd_remove), + __ATTR(list, 0444, class_rbd_list, NULL), + __ATTR(snaps_refresh, 0200, NULL, class_rbd_snaps_refresh), + __ATTR(snap_create, 0200, NULL, class_rbd_snap_create), + __ATTR(snaps_list, 0444, class_rbd_snaps_list, NULL), + __ATTR(snap_rollback, 0200, NULL, class_rbd_rollback), + __ATTR_NULL +}; + +/* + * create control files in sysfs + * /sys/class/rbd/... + */ +static int rbd_sysfs_init(void) +{ + int ret = -ENOMEM; + + class_rbd = kzalloc(sizeof(*class_rbd), GFP_KERNEL); + if (!class_rbd) + goto out; + + class_rbd->name = DRV_NAME; + class_rbd->owner = THIS_MODULE; + class_rbd->class_release = class_rbd_release; + class_rbd->class_attrs = class_rbd_attrs; + + ret = class_register(class_rbd); + if (ret) + goto out_class; + return 0; + +out_class: + kfree(class_rbd); + class_rbd = NULL; + pr_err(DRV_NAME ": failed to create class rbd\n"); +out: + return ret; +} + +static void rbd_sysfs_cleanup(void) +{ + if (class_rbd) + class_destroy(class_rbd); + class_rbd = NULL; +} + +int __init rbd_init(void) +{ + int rc; + + rc = rbd_sysfs_init(); + if (rc) + return rc; + spin_lock_init(&node_lock); + pr_info("loaded " DRV_NAME_LONG "\n"); + return 0; +} + +void __exit rbd_exit(void) +{ + rbd_sysfs_cleanup(); +} + +module_init(rbd_init); +module_exit(rbd_exit); + +MODULE_AUTHOR("Sage Weil <sage@newdream.net>"); +MODULE_AUTHOR("Yehuda Sadeh <yehuda@hq.newdream.net>"); +MODULE_DESCRIPTION("rados block device"); + +/* following authorship retained from original osdblk.c */ +MODULE_AUTHOR("Jeff Garzik <jeff@garzik.org>"); + +MODULE_LICENSE("GPL"); diff --git a/drivers/block/rbd_types.h b/drivers/block/rbd_types.h new file mode 100644 index 000000000000..fc6c678aa2cb --- /dev/null +++ b/drivers/block/rbd_types.h @@ -0,0 +1,73 @@ +/* + * Ceph - scalable distributed file system + * + * Copyright (C) 2004-2010 Sage Weil <sage@newdream.net> + * + * This is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License version 2.1, as published by the Free Software + * Foundation. See file COPYING. + * + */ + +#ifndef CEPH_RBD_TYPES_H +#define CEPH_RBD_TYPES_H + +#include <linux/types.h> + +/* + * rbd image 'foo' consists of objects + * foo.rbd - image metadata + * foo.00000000 + * foo.00000001 + * ... - data + */ + +#define RBD_SUFFIX ".rbd" +#define RBD_DIRECTORY "rbd_directory" +#define RBD_INFO "rbd_info" + +#define RBD_DEFAULT_OBJ_ORDER 22 /* 4MB */ +#define RBD_MIN_OBJ_ORDER 16 +#define RBD_MAX_OBJ_ORDER 30 + +#define RBD_MAX_OBJ_NAME_LEN 96 +#define RBD_MAX_SEG_NAME_LEN 128 + +#define RBD_COMP_NONE 0 +#define RBD_CRYPT_NONE 0 + +#define RBD_HEADER_TEXT "<<< Rados Block Device Image >>>\n" +#define RBD_HEADER_SIGNATURE "RBD" +#define RBD_HEADER_VERSION "001.005" + +struct rbd_info { + __le64 max_id; +} __attribute__ ((packed)); + +struct rbd_image_snap_ondisk { + __le64 id; + __le64 image_size; +} __attribute__((packed)); + +struct rbd_image_header_ondisk { + char text[40]; + char block_name[24]; + char signature[4]; + char version[8]; + struct { + __u8 order; + __u8 crypt_type; + __u8 comp_type; + __u8 unused; + } __attribute__((packed)) options; + __le64 image_size; + __le64 snap_seq; + __le32 snap_count; + __le32 reserved; + __le64 snap_names_len; + struct rbd_image_snap_ondisk snaps[0]; +} __attribute__((packed)); + + +#endif diff --git a/drivers/block/virtio_blk.c b/drivers/block/virtio_blk.c index 1101e251a629..8320490226b7 100644 --- a/drivers/block/virtio_blk.c +++ b/drivers/block/virtio_blk.c @@ -2,7 +2,6 @@ #include <linux/spinlock.h> #include <linux/slab.h> #include <linux/blkdev.h> -#include <linux/smp_lock.h> #include <linux/hdreg.h> #include <linux/virtio.h> #include <linux/virtio_blk.h> @@ -222,8 +221,8 @@ static int virtblk_get_id(struct gendisk *disk, char *id_str) return err; } -static int virtblk_locked_ioctl(struct block_device *bdev, fmode_t mode, - unsigned cmd, unsigned long data) +static int virtblk_ioctl(struct block_device *bdev, fmode_t mode, + unsigned int cmd, unsigned long data) { struct gendisk *disk = bdev->bd_disk; struct virtio_blk *vblk = disk->private_data; @@ -238,18 +237,6 @@ static int virtblk_locked_ioctl(struct block_device *bdev, fmode_t mode, (void __user *)data); } -static int virtblk_ioctl(struct block_device *bdev, fmode_t mode, - unsigned int cmd, unsigned long param) -{ - int ret; - - lock_kernel(); - ret = virtblk_locked_ioctl(bdev, mode, cmd, param); - unlock_kernel(); - - return ret; -} - /* We provide getgeo only to please some old bootloader/partitioning tools */ static int virtblk_getgeo(struct block_device *bd, struct hd_geometry *geo) { diff --git a/drivers/bluetooth/bluecard_cs.c b/drivers/bluetooth/bluecard_cs.c index d52e90a5a617..4104b7feae67 100644 --- a/drivers/bluetooth/bluecard_cs.c +++ b/drivers/bluetooth/bluecard_cs.c @@ -39,7 +39,6 @@ #include <linux/skbuff.h> #include <linux/io.h> -#include <pcmcia/cs.h> #include <pcmcia/cistpl.h> #include <pcmcia/ciscode.h> #include <pcmcia/ds.h> @@ -865,8 +864,7 @@ static int bluecard_probe(struct pcmcia_device *link) info->p_dev = link; link->priv = info; - link->conf.Attributes = CONF_ENABLE_IRQ; - link->conf.IntType = INT_MEMORY_AND_IO; + link->config_flags |= CONF_ENABLE_IRQ; return bluecard_config(link); } @@ -886,7 +884,7 @@ static int bluecard_config(struct pcmcia_device *link) bluecard_info_t *info = link->priv; int i, n; - link->conf.ConfigIndex = 0x20; + link->config_index = 0x20; link->resource[0]->flags |= IO_DATA_PATH_WIDTH_8; link->resource[0]->end = 64; @@ -906,7 +904,7 @@ static int bluecard_config(struct pcmcia_device *link) if (i != 0) goto failed; - i = pcmcia_request_configuration(link, &link->conf); + i = pcmcia_enable_device(link); if (i != 0) goto failed; @@ -942,9 +940,7 @@ MODULE_DEVICE_TABLE(pcmcia, bluecard_ids); static struct pcmcia_driver bluecard_driver = { .owner = THIS_MODULE, - .drv = { - .name = "bluecard_cs", - }, + .name = "bluecard_cs", .probe = bluecard_probe, .remove = bluecard_detach, .id_table = bluecard_ids, diff --git a/drivers/bluetooth/bt3c_cs.c b/drivers/bluetooth/bt3c_cs.c index 7ab8f29d5e0d..0c8a65587491 100644 --- a/drivers/bluetooth/bt3c_cs.c +++ b/drivers/bluetooth/bt3c_cs.c @@ -45,7 +45,6 @@ #include <linux/device.h> #include <linux/firmware.h> -#include <pcmcia/cs.h> #include <pcmcia/cistpl.h> #include <pcmcia/ciscode.h> #include <pcmcia/ds.h> @@ -657,11 +656,8 @@ static int bt3c_probe(struct pcmcia_device *link) info->p_dev = link; link->priv = info; - link->resource[0]->flags |= IO_DATA_PATH_WIDTH_8; - link->resource[0]->end = 8; - - link->conf.Attributes = CONF_ENABLE_IRQ; - link->conf.IntType = INT_MEMORY_AND_IO; + link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_VPP | + CONF_AUTO_SET_IO; return bt3c_config(link); } @@ -675,43 +671,41 @@ static void bt3c_detach(struct pcmcia_device *link) kfree(info); } -static int bt3c_check_config(struct pcmcia_device *p_dev, - cistpl_cftable_entry_t *cf, - cistpl_cftable_entry_t *dflt, - unsigned int vcc, - void *priv_data) +static int bt3c_check_config(struct pcmcia_device *p_dev, void *priv_data) { - unsigned long try = (unsigned long) priv_data; + int *try = priv_data; - p_dev->io_lines = (try == 0) ? 16 : cf->io.flags & CISTPL_IO_LINES_MASK; + if (try == 0) + p_dev->io_lines = 16; - if (cf->vpp1.present & (1 << CISTPL_POWER_VNOM)) - p_dev->conf.Vpp = cf->vpp1.param[CISTPL_POWER_VNOM] / 10000; - if ((cf->io.nwin > 0) && (cf->io.win[0].len == 8) && - (cf->io.win[0].base != 0)) { - p_dev->resource[0]->start = cf->io.win[0].base; - if (!pcmcia_request_io(p_dev)) - return 0; - } - return -ENODEV; + if ((p_dev->resource[0]->end != 8) || (p_dev->resource[0]->start == 0)) + return -EINVAL; + + p_dev->resource[0]->end = 8; + p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH; + p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_8; + + return pcmcia_request_io(p_dev); } static int bt3c_check_config_notpicky(struct pcmcia_device *p_dev, - cistpl_cftable_entry_t *cf, - cistpl_cftable_entry_t *dflt, - unsigned int vcc, void *priv_data) { static unsigned int base[5] = { 0x3f8, 0x2f8, 0x3e8, 0x2e8, 0x0 }; int j; - if ((cf->io.nwin > 0) && ((cf->io.flags & CISTPL_IO_LINES_MASK) <= 3)) { - for (j = 0; j < 5; j++) { - p_dev->resource[0]->start = base[j]; - p_dev->io_lines = base[j] ? 16 : 3; - if (!pcmcia_request_io(p_dev)) - return 0; - } + if (p_dev->io_lines > 3) + return -ENODEV; + + p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH; + p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_8; + p_dev->resource[0]->end = 8; + + for (j = 0; j < 5; j++) { + p_dev->resource[0]->start = base[j]; + p_dev->io_lines = base[j] ? 16 : 3; + if (!pcmcia_request_io(p_dev)) + return 0; } return -ENODEV; } @@ -742,7 +736,7 @@ found_port: if (i != 0) goto failed; - i = pcmcia_request_configuration(link, &link->conf); + i = pcmcia_enable_device(link); if (i != 0) goto failed; @@ -775,9 +769,7 @@ MODULE_DEVICE_TABLE(pcmcia, bt3c_ids); static struct pcmcia_driver bt3c_driver = { .owner = THIS_MODULE, - .drv = { - .name = "bt3c_cs", - }, + .name = "bt3c_cs", .probe = bt3c_probe, .remove = bt3c_detach, .id_table = bt3c_ids, diff --git a/drivers/bluetooth/btuart_cs.c b/drivers/bluetooth/btuart_cs.c index 1c4f5e863b03..f8a0708e2311 100644 --- a/drivers/bluetooth/btuart_cs.c +++ b/drivers/bluetooth/btuart_cs.c @@ -41,7 +41,6 @@ #include <asm/system.h> #include <asm/io.h> -#include <pcmcia/cs.h> #include <pcmcia/cistpl.h> #include <pcmcia/ciscode.h> #include <pcmcia/ds.h> @@ -586,11 +585,8 @@ static int btuart_probe(struct pcmcia_device *link) info->p_dev = link; link->priv = info; - link->resource[0]->flags |= IO_DATA_PATH_WIDTH_8; - link->resource[0]->end = 8; - - link->conf.Attributes = CONF_ENABLE_IRQ; - link->conf.IntType = INT_MEMORY_AND_IO; + link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_VPP | + CONF_AUTO_SET_IO; return btuart_config(link); } @@ -604,43 +600,41 @@ static void btuart_detach(struct pcmcia_device *link) kfree(info); } -static int btuart_check_config(struct pcmcia_device *p_dev, - cistpl_cftable_entry_t *cf, - cistpl_cftable_entry_t *dflt, - unsigned int vcc, - void *priv_data) +static int btuart_check_config(struct pcmcia_device *p_dev, void *priv_data) { int *try = priv_data; - p_dev->io_lines = (try == 0) ? 16 : cf->io.flags & CISTPL_IO_LINES_MASK; + if (try == 0) + p_dev->io_lines = 16; - if (cf->vpp1.present & (1 << CISTPL_POWER_VNOM)) - p_dev->conf.Vpp = cf->vpp1.param[CISTPL_POWER_VNOM] / 10000; - if ((cf->io.nwin > 0) && (cf->io.win[0].len == 8) && - (cf->io.win[0].base != 0)) { - p_dev->resource[0]->start = cf->io.win[0].base; - if (!pcmcia_request_io(p_dev)) - return 0; - } - return -ENODEV; + if ((p_dev->resource[0]->end != 8) || (p_dev->resource[0]->start == 0)) + return -EINVAL; + + p_dev->resource[0]->end = 8; + p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH; + p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_8; + + return pcmcia_request_io(p_dev); } static int btuart_check_config_notpicky(struct pcmcia_device *p_dev, - cistpl_cftable_entry_t *cf, - cistpl_cftable_entry_t *dflt, - unsigned int vcc, void *priv_data) { static unsigned int base[5] = { 0x3f8, 0x2f8, 0x3e8, 0x2e8, 0x0 }; int j; - if ((cf->io.nwin > 0) && ((cf->io.flags & CISTPL_IO_LINES_MASK) <= 3)) { - for (j = 0; j < 5; j++) { - p_dev->resource[0]->start = base[j]; - p_dev->io_lines = base[j] ? 16 : 3; - if (!pcmcia_request_io(p_dev)) - return 0; - } + if (p_dev->io_lines > 3) + return -ENODEV; + + p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH; + p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_8; + p_dev->resource[0]->end = 8; + + for (j = 0; j < 5; j++) { + p_dev->resource[0]->start = base[j]; + p_dev->io_lines = base[j] ? 16 : 3; + if (!pcmcia_request_io(p_dev)) + return 0; } return -ENODEV; } @@ -671,7 +665,7 @@ found_port: if (i != 0) goto failed; - i = pcmcia_request_configuration(link, &link->conf); + i = pcmcia_enable_device(link); if (i != 0) goto failed; @@ -703,9 +697,7 @@ MODULE_DEVICE_TABLE(pcmcia, btuart_ids); static struct pcmcia_driver btuart_driver = { .owner = THIS_MODULE, - .drv = { - .name = "btuart_cs", - }, + .name = "btuart_cs", .probe = btuart_probe, .remove = btuart_detach, .id_table = btuart_ids, diff --git a/drivers/bluetooth/dtl1_cs.c b/drivers/bluetooth/dtl1_cs.c index db7c8db695fc..26ee0cf88d20 100644 --- a/drivers/bluetooth/dtl1_cs.c +++ b/drivers/bluetooth/dtl1_cs.c @@ -41,7 +41,6 @@ #include <asm/system.h> #include <asm/io.h> -#include <pcmcia/cs.h> #include <pcmcia/cistpl.h> #include <pcmcia/ciscode.h> #include <pcmcia/ds.h> @@ -572,11 +571,7 @@ static int dtl1_probe(struct pcmcia_device *link) info->p_dev = link; link->priv = info; - link->resource[0]->flags |= IO_DATA_PATH_WIDTH_8; - link->resource[0]->end = 8; - - link->conf.Attributes = CONF_ENABLE_IRQ; - link->conf.IntType = INT_MEMORY_AND_IO; + link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_IO; return dtl1_config(link); } @@ -591,18 +586,14 @@ static void dtl1_detach(struct pcmcia_device *link) kfree(info); } -static int dtl1_confcheck(struct pcmcia_device *p_dev, - cistpl_cftable_entry_t *cf, - cistpl_cftable_entry_t *dflt, - unsigned int vcc, - void *priv_data) +static int dtl1_confcheck(struct pcmcia_device *p_dev, void *priv_data) { - if ((cf->io.nwin != 1) || (cf->io.win[0].len <= 8)) + if ((p_dev->resource[1]->end) || (p_dev->resource[1]->end < 8)) return -ENODEV; - p_dev->resource[0]->start = cf->io.win[0].base; - p_dev->resource[0]->end = cf->io.win[0].len; /*yo */ - p_dev->io_lines = cf->io.flags & CISTPL_IO_LINES_MASK; + p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH; + p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_8; + return pcmcia_request_io(p_dev); } @@ -620,7 +611,7 @@ static int dtl1_config(struct pcmcia_device *link) if (i != 0) goto failed; - i = pcmcia_request_configuration(link, &link->conf); + i = pcmcia_enable_device(link); if (i != 0) goto failed; @@ -656,9 +647,7 @@ MODULE_DEVICE_TABLE(pcmcia, dtl1_ids); static struct pcmcia_driver dtl1_driver = { .owner = THIS_MODULE, - .drv = { - .name = "dtl1_cs", - }, + .name = "dtl1_cs", .probe = dtl1_probe, .remove = dtl1_detach, .id_table = dtl1_ids, diff --git a/drivers/char/agp/Kconfig b/drivers/char/agp/Kconfig index 4b66c69eaf57..5ddf67e76f8b 100644 --- a/drivers/char/agp/Kconfig +++ b/drivers/char/agp/Kconfig @@ -57,7 +57,7 @@ config AGP_AMD config AGP_AMD64 tristate "AMD Opteron/Athlon64 on-CPU GART support" - depends on AGP && X86 && K8_NB + depends on AGP && X86 && AMD_NB help This option gives you AGP support for the GLX component of X using the on-CPU northbridge of the AMD Athlon64/Opteron CPUs. diff --git a/drivers/char/agp/amd64-agp.c b/drivers/char/agp/amd64-agp.c index 70312da4c968..42396df55556 100644 --- a/drivers/char/agp/amd64-agp.c +++ b/drivers/char/agp/amd64-agp.c @@ -15,7 +15,7 @@ #include <linux/mmzone.h> #include <asm/page.h> /* PAGE_SIZE */ #include <asm/e820.h> -#include <asm/k8.h> +#include <asm/amd_nb.h> #include <asm/gart.h> #include "agp.h" @@ -124,7 +124,7 @@ static int amd64_fetch_size(void) u32 temp; struct aper_size_info_32 *values; - dev = k8_northbridges[0]; + dev = k8_northbridges.nb_misc[0]; if (dev==NULL) return 0; @@ -181,10 +181,14 @@ static int amd_8151_configure(void) unsigned long gatt_bus = virt_to_phys(agp_bridge->gatt_table_real); int i; + if (!k8_northbridges.gart_supported) + return 0; + /* Configure AGP regs in each x86-64 host bridge. */ - for (i = 0; i < num_k8_northbridges; i++) { + for (i = 0; i < k8_northbridges.num; i++) { agp_bridge->gart_bus_addr = - amd64_configure(k8_northbridges[i], gatt_bus); + amd64_configure(k8_northbridges.nb_misc[i], + gatt_bus); } k8_flush_garts(); return 0; @@ -195,11 +199,15 @@ static void amd64_cleanup(void) { u32 tmp; int i; - for (i = 0; i < num_k8_northbridges; i++) { - struct pci_dev *dev = k8_northbridges[i]; + + if (!k8_northbridges.gart_supported) + return; + + for (i = 0; i < k8_northbridges.num; i++) { + struct pci_dev *dev = k8_northbridges.nb_misc[i]; /* disable gart translation */ pci_read_config_dword(dev, AMD64_GARTAPERTURECTL, &tmp); - tmp &= ~AMD64_GARTEN; + tmp &= ~GARTEN; pci_write_config_dword(dev, AMD64_GARTAPERTURECTL, tmp); } } @@ -313,22 +321,25 @@ static __devinit int fix_northbridge(struct pci_dev *nb, struct pci_dev *agp, if (order < 0 || !agp_aperture_valid(aper, (32*1024*1024)<<order)) return -1; - pci_write_config_dword(nb, AMD64_GARTAPERTURECTL, order << 1); + gart_set_size_and_enable(nb, order); pci_write_config_dword(nb, AMD64_GARTAPERTUREBASE, aper >> 25); return 0; } -static __devinit int cache_nbs (struct pci_dev *pdev, u32 cap_ptr) +static __devinit int cache_nbs(struct pci_dev *pdev, u32 cap_ptr) { int i; if (cache_k8_northbridges() < 0) return -ENODEV; + if (!k8_northbridges.gart_supported) + return -ENODEV; + i = 0; - for (i = 0; i < num_k8_northbridges; i++) { - struct pci_dev *dev = k8_northbridges[i]; + for (i = 0; i < k8_northbridges.num; i++) { + struct pci_dev *dev = k8_northbridges.nb_misc[i]; if (fix_northbridge(dev, pdev, cap_ptr) < 0) { dev_err(&dev->dev, "no usable aperture found\n"); #ifdef __x86_64__ @@ -405,7 +416,8 @@ static int __devinit uli_agp_init(struct pci_dev *pdev) } /* shadow x86-64 registers into ULi registers */ - pci_read_config_dword (k8_northbridges[0], AMD64_GARTAPERTUREBASE, &httfea); + pci_read_config_dword (k8_northbridges.nb_misc[0], AMD64_GARTAPERTUREBASE, + &httfea); /* if x86-64 aperture base is beyond 4G, exit here */ if ((httfea & 0x7fff) >> (32 - 25)) { @@ -472,7 +484,8 @@ static int nforce3_agp_init(struct pci_dev *pdev) pci_write_config_dword(dev1, NVIDIA_X86_64_1_APSIZE, tmp); /* shadow x86-64 registers into NVIDIA registers */ - pci_read_config_dword (k8_northbridges[0], AMD64_GARTAPERTUREBASE, &apbase); + pci_read_config_dword (k8_northbridges.nb_misc[0], AMD64_GARTAPERTUREBASE, + &apbase); /* if x86-64 aperture base is beyond 4G, exit here */ if ( (apbase & 0x7fff) >> (32 - 25) ) { diff --git a/drivers/char/agp/generic.c b/drivers/char/agp/generic.c index d2abf5143983..64255cef8a7d 100644 --- a/drivers/char/agp/generic.c +++ b/drivers/char/agp/generic.c @@ -984,7 +984,9 @@ int agp_generic_create_gatt_table(struct agp_bridge_data *bridge) bridge->driver->cache_flush(); #ifdef CONFIG_X86 - set_memory_uc((unsigned long)table, 1 << page_order); + if (set_memory_uc((unsigned long)table, 1 << page_order)) + printk(KERN_WARNING "Could not set GATT table memory to UC!"); + bridge->gatt_table = (void *)table; #else bridge->gatt_table = ioremap_nocache(virt_to_phys(table), diff --git a/drivers/char/pcmcia/cm4000_cs.c b/drivers/char/pcmcia/cm4000_cs.c index ec73d9f6d9ed..c7b482d15e2a 100644 --- a/drivers/char/pcmcia/cm4000_cs.c +++ b/drivers/char/pcmcia/cm4000_cs.c @@ -34,7 +34,6 @@ #include <linux/uaccess.h> #include <linux/io.h> -#include <pcmcia/cs.h> #include <pcmcia/cistpl.h> #include <pcmcia/cisreg.h> #include <pcmcia/ciscode.h> @@ -55,8 +54,6 @@ __func__ , ## args); \ } while (0) -static char *version = "cm4000_cs.c v2.4.0gm6 - All bugs added by Harald Welte"; - #define T_1SEC (HZ) #define T_10MSEC msecs_to_jiffies(10) #define T_20MSEC msecs_to_jiffies(20) @@ -1742,20 +1739,8 @@ static void cmm_cm4000_release(struct pcmcia_device * link) /*==== Interface to PCMCIA Layer =======================================*/ -static int cm4000_config_check(struct pcmcia_device *p_dev, - cistpl_cftable_entry_t *cfg, - cistpl_cftable_entry_t *dflt, - unsigned int vcc, - void *priv_data) +static int cm4000_config_check(struct pcmcia_device *p_dev, void *priv_data) { - if (!cfg->io.nwin) - return -ENODEV; - - p_dev->resource[0]->start = cfg->io.win[0].base; - p_dev->resource[0]->end = cfg->io.win[0].len; - p_dev->resource[0]->flags |= pcmcia_io_cfg_data_width(cfg->io.flags); - p_dev->io_lines = cfg->io.flags & CISTPL_IO_LINES_MASK; - return pcmcia_request_io(p_dev); } @@ -1763,13 +1748,13 @@ static int cm4000_config(struct pcmcia_device * link, int devno) { struct cm4000_dev *dev; + link->config_flags |= CONF_AUTO_SET_IO; + /* read the config-tuples */ if (pcmcia_loop_config(link, cm4000_config_check, NULL)) goto cs_release; - link->conf.IntType = 00000002; - - if (pcmcia_request_configuration(link, &link->conf)) + if (pcmcia_enable_device(link)) goto cs_release; dev = link->priv; @@ -1829,7 +1814,6 @@ static int cm4000_probe(struct pcmcia_device *link) dev->p_dev = link; link->priv = dev; - link->conf.IntType = INT_MEMORY_AND_IO; dev_table[i] = link; init_waitqueue_head(&dev->devq); @@ -1891,9 +1875,7 @@ MODULE_DEVICE_TABLE(pcmcia, cm4000_ids); static struct pcmcia_driver cm4000_driver = { .owner = THIS_MODULE, - .drv = { - .name = "cm4000_cs", - }, + .name = "cm4000_cs", .probe = cm4000_probe, .remove = cm4000_detach, .suspend = cm4000_suspend, @@ -1905,8 +1887,6 @@ static int __init cmm_init(void) { int rc; - printk(KERN_INFO "%s\n", version); - cmm_class = class_create(THIS_MODULE, "cardman_4000"); if (IS_ERR(cmm_class)) return PTR_ERR(cmm_class); @@ -1931,7 +1911,6 @@ static int __init cmm_init(void) static void __exit cmm_exit(void) { - printk(KERN_INFO MODULE_NAME ": unloading\n"); pcmcia_unregister_driver(&cm4000_driver); unregister_chrdev(major, DEVICE_NAME); class_destroy(cmm_class); diff --git a/drivers/char/pcmcia/cm4040_cs.c b/drivers/char/pcmcia/cm4040_cs.c index 815cde1d0570..bf2f046fc2c1 100644 --- a/drivers/char/pcmcia/cm4040_cs.c +++ b/drivers/char/pcmcia/cm4040_cs.c @@ -29,7 +29,6 @@ #include <asm/uaccess.h> #include <asm/io.h> -#include <pcmcia/cs.h> #include <pcmcia/cistpl.h> #include <pcmcia/cisreg.h> #include <pcmcia/ciscode.h> @@ -49,9 +48,6 @@ __func__ , ## args); \ } while (0) -static char *version = -"OMNIKEY CardMan 4040 v1.1.0gm5 - All bugs added by Harald Welte"; - #define CCID_DRIVER_BULK_DEFAULT_TIMEOUT (150*HZ) #define CCID_DRIVER_ASYNC_POWERUP_TIMEOUT (35*HZ) #define CCID_DRIVER_MINIMUM_TIMEOUT (3*HZ) @@ -516,26 +512,9 @@ static void cm4040_reader_release(struct pcmcia_device *link) return; } -static int cm4040_config_check(struct pcmcia_device *p_dev, - cistpl_cftable_entry_t *cfg, - cistpl_cftable_entry_t *dflt, - unsigned int vcc, - void *priv_data) +static int cm4040_config_check(struct pcmcia_device *p_dev, void *priv_data) { - int rc; - if (!cfg->io.nwin) - return -ENODEV; - - /* Get the IOaddr */ - p_dev->resource[0]->start = cfg->io.win[0].base; - p_dev->resource[0]->end = cfg->io.win[0].len; - p_dev->resource[0]->flags |= pcmcia_io_cfg_data_width(cfg->io.flags); - p_dev->io_lines = cfg->io.flags & CISTPL_IO_LINES_MASK; - rc = pcmcia_request_io(p_dev); - - dev_printk(KERN_INFO, &p_dev->dev, - "pcmcia_request_io returned 0x%x\n", rc); - return rc; + return pcmcia_request_io(p_dev); } @@ -544,15 +523,15 @@ static int reader_config(struct pcmcia_device *link, int devno) struct reader_dev *dev; int fail_rc; + link->config_flags |= CONF_AUTO_SET_IO; + if (pcmcia_loop_config(link, cm4040_config_check, NULL)) goto cs_release; - link->conf.IntType = 00000002; - - fail_rc = pcmcia_request_configuration(link, &link->conf); + fail_rc = pcmcia_enable_device(link); if (fail_rc != 0) { dev_printk(KERN_INFO, &link->dev, - "pcmcia_request_configuration failed 0x%x\n", + "pcmcia_enable_device failed 0x%x\n", fail_rc); goto cs_release; } @@ -599,7 +578,6 @@ static int reader_probe(struct pcmcia_device *link) link->priv = dev; dev->p_dev = link; - link->conf.IntType = INT_MEMORY_AND_IO; dev_table[i] = link; init_waitqueue_head(&dev->devq); @@ -662,9 +640,7 @@ MODULE_DEVICE_TABLE(pcmcia, cm4040_ids); static struct pcmcia_driver reader_driver = { .owner = THIS_MODULE, - .drv = { - .name = "cm4040_cs", - }, + .name = "cm4040_cs", .probe = reader_probe, .remove = reader_detach, .id_table = cm4040_ids, @@ -674,7 +650,6 @@ static int __init cm4040_init(void) { int rc; - printk(KERN_INFO "%s\n", version); cmx_class = class_create(THIS_MODULE, "cardman_4040"); if (IS_ERR(cmx_class)) return PTR_ERR(cmx_class); @@ -699,7 +674,6 @@ static int __init cm4040_init(void) static void __exit cm4040_exit(void) { - printk(KERN_INFO MODULE_NAME ": unloading\n"); pcmcia_unregister_driver(&reader_driver); unregister_chrdev(major, DEVICE_NAME); class_destroy(cmx_class); diff --git a/drivers/char/pcmcia/ipwireless/main.c b/drivers/char/pcmcia/ipwireless/main.c index 67bdb05798b1..94b8eb4d691d 100644 --- a/drivers/char/pcmcia/ipwireless/main.c +++ b/drivers/char/pcmcia/ipwireless/main.c @@ -32,7 +32,6 @@ #include <pcmcia/device_id.h> #include <pcmcia/ss.h> #include <pcmcia/ds.h> -#include <pcmcia/cs.h> static struct pcmcia_device_id ipw_ids[] = { PCMCIA_DEVICE_MANF_CARD(0x02f2, 0x0100), @@ -76,23 +75,18 @@ static void signalled_reboot_callback(void *callback_data) schedule_work(&ipw->work_reboot); } -static int ipwireless_probe(struct pcmcia_device *p_dev, - cistpl_cftable_entry_t *cfg, - cistpl_cftable_entry_t *dflt, - unsigned int vcc, - void *priv_data) +static int ipwireless_probe(struct pcmcia_device *p_dev, void *priv_data) { struct ipw_dev *ipw = priv_data; struct resource *io_resource; int ret; + p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH; p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_AUTO; - p_dev->resource[0]->start = cfg->io.win[0].base; - p_dev->resource[0]->end = cfg->io.win[0].len; /* 0x40 causes it to generate level mode interrupts. */ /* 0x04 enables IREQ pin. */ - p_dev->conf.ConfigIndex = cfg->index | 0x44; + p_dev->config_index |= 0x44; p_dev->io_lines = 16; ret = pcmcia_request_io(p_dev); if (ret) @@ -102,65 +96,49 @@ static int ipwireless_probe(struct pcmcia_device *p_dev, resource_size(p_dev->resource[0]), IPWIRELESS_PCCARD_NAME); - if (cfg->mem.nwin == 0) - return 0; - - ipw->request_common_memory.Attributes = + p_dev->resource[2]->flags |= WIN_DATA_WIDTH_16 | WIN_MEMORY_TYPE_CM | WIN_ENABLE; - ipw->request_common_memory.Base = cfg->mem.win[0].host_addr; - ipw->request_common_memory.Size = cfg->mem.win[0].len; - if (ipw->request_common_memory.Size < 0x1000) - ipw->request_common_memory.Size = 0x1000; - ipw->request_common_memory.AccessSpeed = 0; - - ret = pcmcia_request_window(p_dev, &ipw->request_common_memory, - &ipw->handle_common_memory); + ret = pcmcia_request_window(p_dev, p_dev->resource[2], 0); if (ret != 0) goto exit1; - ret = pcmcia_map_mem_page(p_dev, ipw->handle_common_memory, - cfg->mem.win[0].card_addr); - + ret = pcmcia_map_mem_page(p_dev, p_dev->resource[2], p_dev->card_addr); if (ret != 0) goto exit2; - ipw->is_v2_card = cfg->mem.win[0].len == 0x100; + ipw->is_v2_card = resource_size(p_dev->resource[2]) == 0x100; - ipw->common_memory = ioremap(ipw->request_common_memory.Base, - ipw->request_common_memory.Size); - request_mem_region(ipw->request_common_memory.Base, - ipw->request_common_memory.Size, + ipw->attr_memory = ioremap(p_dev->resource[2]->start, + resource_size(p_dev->resource[2])); + request_mem_region(p_dev->resource[2]->start, + resource_size(p_dev->resource[2]), IPWIRELESS_PCCARD_NAME); - ipw->request_attr_memory.Attributes = - WIN_DATA_WIDTH_16 | WIN_MEMORY_TYPE_AM | WIN_ENABLE; - ipw->request_attr_memory.Base = 0; - ipw->request_attr_memory.Size = 0; /* this used to be 0x1000 */ - ipw->request_attr_memory.AccessSpeed = 0; - - ret = pcmcia_request_window(p_dev, &ipw->request_attr_memory, - &ipw->handle_attr_memory); - + p_dev->resource[3]->flags |= WIN_DATA_WIDTH_16 | WIN_MEMORY_TYPE_AM | + WIN_ENABLE; + p_dev->resource[3]->end = 0; /* this used to be 0x1000 */ + ret = pcmcia_request_window(p_dev, p_dev->resource[3], 0); if (ret != 0) goto exit2; - ret = pcmcia_map_mem_page(p_dev, ipw->handle_attr_memory, 0); + ret = pcmcia_map_mem_page(p_dev, p_dev->resource[3], 0); if (ret != 0) goto exit3; - ipw->attr_memory = ioremap(ipw->request_attr_memory.Base, - ipw->request_attr_memory.Size); - request_mem_region(ipw->request_attr_memory.Base, - ipw->request_attr_memory.Size, IPWIRELESS_PCCARD_NAME); + ipw->attr_memory = ioremap(p_dev->resource[3]->start, + resource_size(p_dev->resource[3])); + request_mem_region(p_dev->resource[3]->start, + resource_size(p_dev->resource[3]), + IPWIRELESS_PCCARD_NAME); return 0; exit3: exit2: if (ipw->common_memory) { - release_mem_region(ipw->request_common_memory.Base, - ipw->request_common_memory.Size); + release_mem_region(p_dev->resource[2]->start, + resource_size(p_dev->resource[2])); iounmap(ipw->common_memory); } exit1: @@ -175,14 +153,13 @@ static int config_ipwireless(struct ipw_dev *ipw) int ret = 0; ipw->is_v2_card = 0; + link->config_flags |= CONF_AUTO_SET_IO | CONF_AUTO_SET_IOMEM | + CONF_ENABLE_IRQ; ret = pcmcia_loop_config(link, ipwireless_probe, ipw); if (ret != 0) return ret; - link->conf.Attributes = CONF_ENABLE_IRQ; - link->conf.IntType = INT_MEMORY_AND_IO; - INIT_WORK(&ipw->work_reboot, signalled_reboot_work); ipwireless_init_hardware_v1(ipw->hardware, link->resource[0]->start, @@ -201,13 +178,9 @@ static int config_ipwireless(struct ipw_dev *ipw) (unsigned int) link->irq); if (ipw->attr_memory && ipw->common_memory) printk(KERN_INFO IPWIRELESS_PCCARD_NAME - ": attr memory 0x%08lx-0x%08lx, common memory 0x%08lx-0x%08lx\n", - ipw->request_attr_memory.Base, - ipw->request_attr_memory.Base - + ipw->request_attr_memory.Size - 1, - ipw->request_common_memory.Base, - ipw->request_common_memory.Base - + ipw->request_common_memory.Size - 1); + ": attr memory %pR, common memory %pR\n", + link->resource[3], + link->resource[2]); ipw->network = ipwireless_network_create(ipw->hardware); if (!ipw->network) @@ -223,25 +196,23 @@ static int config_ipwireless(struct ipw_dev *ipw) * Do the RequestConfiguration last, because it enables interrupts. * Then we don't get any interrupts before we're ready for them. */ - ret = pcmcia_request_configuration(link, &link->conf); - + ret = pcmcia_enable_device(link); if (ret != 0) goto exit; return 0; exit: - if (ipw->attr_memory) { - release_mem_region(ipw->request_attr_memory.Base, - ipw->request_attr_memory.Size); - iounmap(ipw->attr_memory); - - } if (ipw->common_memory) { - release_mem_region(ipw->request_common_memory.Base, - ipw->request_common_memory.Size); + release_mem_region(link->resource[2]->start, + resource_size(link->resource[2])); iounmap(ipw->common_memory); } + if (ipw->attr_memory) { + release_mem_region(link->resource[3]->start, + resource_size(link->resource[3])); + iounmap(ipw->attr_memory); + } pcmcia_disable_device(link); return -1; } @@ -249,13 +220,13 @@ exit: static void release_ipwireless(struct ipw_dev *ipw) { if (ipw->common_memory) { - release_mem_region(ipw->request_common_memory.Base, - ipw->request_common_memory.Size); + release_mem_region(ipw->link->resource[2]->start, + resource_size(ipw->link->resource[2])); iounmap(ipw->common_memory); } if (ipw->attr_memory) { - release_mem_region(ipw->request_attr_memory.Base, - ipw->request_attr_memory.Size); + release_mem_region(ipw->link->resource[3]->start, + resource_size(ipw->link->resource[3])); iounmap(ipw->attr_memory); } pcmcia_disable_device(ipw->link); @@ -324,7 +295,7 @@ static struct pcmcia_driver me = { .owner = THIS_MODULE, .probe = ipwireless_attach, .remove = ipwireless_detach, - .drv = { .name = IPWIRELESS_PCCARD_NAME }, + .name = IPWIRELESS_PCCARD_NAME, .id_table = ipw_ids }; @@ -336,9 +307,6 @@ static int __init init_ipwireless(void) { int ret; - printk(KERN_INFO IPWIRELESS_PCCARD_NAME " " - IPWIRELESS_PCMCIA_VERSION " by " IPWIRELESS_PCMCIA_AUTHOR "\n"); - ret = ipwireless_tty_init(); if (ret != 0) return ret; @@ -355,9 +323,6 @@ static int __init init_ipwireless(void) */ static void __exit exit_ipwireless(void) { - printk(KERN_INFO IPWIRELESS_PCCARD_NAME " " - IPWIRELESS_PCMCIA_VERSION " removed\n"); - pcmcia_unregister_driver(&me); ipwireless_tty_release(); } diff --git a/drivers/char/pcmcia/ipwireless/main.h b/drivers/char/pcmcia/ipwireless/main.h index c207be87b597..f2cbb116bccb 100644 --- a/drivers/char/pcmcia/ipwireless/main.h +++ b/drivers/char/pcmcia/ipwireless/main.h @@ -21,7 +21,6 @@ #include <linux/sched.h> #include <linux/types.h> -#include <pcmcia/cs.h> #include <pcmcia/cistpl.h> #include <pcmcia/ds.h> @@ -45,13 +44,9 @@ struct ipw_dev { struct pcmcia_device *link; int is_v2_card; - window_handle_t handle_attr_memory; void __iomem *attr_memory; - win_req_t request_attr_memory; - window_handle_t handle_common_memory; void __iomem *common_memory; - win_req_t request_common_memory; /* Reference to attribute memory, containing CIS data */ void *attribute_memory; diff --git a/drivers/char/pcmcia/ipwireless/tty.h b/drivers/char/pcmcia/ipwireless/tty.h index 3e163d4cab15..747b2d637860 100644 --- a/drivers/char/pcmcia/ipwireless/tty.h +++ b/drivers/char/pcmcia/ipwireless/tty.h @@ -21,7 +21,6 @@ #include <linux/types.h> #include <linux/sched.h> -#include <pcmcia/cs.h> #include <pcmcia/cistpl.h> #include <pcmcia/ds.h> diff --git a/drivers/char/pcmcia/synclink_cs.c b/drivers/char/pcmcia/synclink_cs.c index 9ecd6bef5d3b..be1810057607 100644 --- a/drivers/char/pcmcia/synclink_cs.c +++ b/drivers/char/pcmcia/synclink_cs.c @@ -70,7 +70,6 @@ #include <linux/workqueue.h> #include <linux/hdlc.h> -#include <pcmcia/cs.h> #include <pcmcia/cistpl.h> #include <pcmcia/cisreg.h> #include <pcmcia/ds.h> @@ -550,9 +549,6 @@ static int mgslpc_probe(struct pcmcia_device *link) /* Initialize the struct pcmcia_device structure */ - link->conf.Attributes = 0; - link->conf.IntType = INT_MEMORY_AND_IO; - ret = mgslpc_config(link); if (ret) return ret; @@ -565,20 +561,8 @@ static int mgslpc_probe(struct pcmcia_device *link) /* Card has been inserted. */ -static int mgslpc_ioprobe(struct pcmcia_device *p_dev, - cistpl_cftable_entry_t *cfg, - cistpl_cftable_entry_t *dflt, - unsigned int vcc, - void *priv_data) +static int mgslpc_ioprobe(struct pcmcia_device *p_dev, void *priv_data) { - if (!cfg->io.nwin) - return -ENODEV; - - p_dev->resource[0]->start = cfg->io.win[0].base; - p_dev->resource[0]->end = cfg->io.win[0].len; - p_dev->resource[0]->flags |= pcmcia_io_cfg_data_width(cfg->io.flags); - p_dev->io_lines = cfg->io.flags & CISTPL_IO_LINES_MASK; - return pcmcia_request_io(p_dev); } @@ -590,32 +574,24 @@ static int mgslpc_config(struct pcmcia_device *link) if (debug_level >= DEBUG_LEVEL_INFO) printk("mgslpc_config(0x%p)\n", link); + link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_IO; + ret = pcmcia_loop_config(link, mgslpc_ioprobe, NULL); if (ret != 0) goto failed; - link->conf.Attributes = CONF_ENABLE_IRQ; - link->conf.IntType = INT_MEMORY_AND_IO; - link->conf.ConfigIndex = 8; - link->conf.Present = PRESENT_OPTION; + link->config_index = 8; + link->config_regs = PRESENT_OPTION; ret = pcmcia_request_irq(link, mgslpc_isr); if (ret) goto failed; - ret = pcmcia_request_configuration(link, &link->conf); + ret = pcmcia_enable_device(link); if (ret) goto failed; info->io_base = link->resource[0]->start; info->irq_level = link->irq; - - dev_info(&link->dev, "index 0x%02x:", - link->conf.ConfigIndex); - if (link->conf.Attributes & CONF_ENABLE_IRQ) - printk(", irq %d", link->irq); - if (link->resource[0]) - printk(", io %pR", link->resource[0]); - printk("\n"); return 0; failed: @@ -2797,9 +2773,7 @@ MODULE_DEVICE_TABLE(pcmcia, mgslpc_ids); static struct pcmcia_driver mgslpc_driver = { .owner = THIS_MODULE, - .drv = { - .name = "synclink_cs", - }, + .name = "synclink_cs", .probe = mgslpc_probe, .remove = mgslpc_detach, .id_table = mgslpc_ids, @@ -2835,8 +2809,6 @@ static void synclink_cs_cleanup(void) { int rc; - printk("Unloading %s: version %s\n", driver_name, driver_version); - while(mgslpc_device_list) mgslpc_remove_device(mgslpc_device_list); @@ -2859,8 +2831,6 @@ static int __init synclink_cs_init(void) BREAKPOINT(); } - printk("%s %s\n", driver_name, driver_version); - if ((rc = pcmcia_register_driver(&mgslpc_driver)) < 0) return rc; @@ -4127,6 +4097,8 @@ static int hdlcdev_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) if (cmd != SIOCWANDEV) return hdlc_ioctl(dev, ifr, cmd); + memset(&new_line, 0, size); + switch(ifr->ifr_settings.type) { case IF_GET_IFACE: /* return current sync_serial_settings */ diff --git a/drivers/char/tpm/tpm.c b/drivers/char/tpm/tpm.c index 05ad4a17a28f..7c4133582dba 100644 --- a/drivers/char/tpm/tpm.c +++ b/drivers/char/tpm/tpm.c @@ -47,6 +47,16 @@ enum tpm_duration { #define TPM_MAX_PROTECTED_ORDINAL 12 #define TPM_PROTECTED_ORDINAL_MASK 0xFF +/* + * Bug workaround - some TPM's don't flush the most + * recently changed pcr on suspend, so force the flush + * with an extend to the selected _unused_ non-volatile pcr. + */ +static int tpm_suspend_pcr; +module_param_named(suspend_pcr, tpm_suspend_pcr, uint, 0644); +MODULE_PARM_DESC(suspend_pcr, + "PCR to use for dummy writes to faciltate flush on suspend."); + static LIST_HEAD(tpm_chip_list); static DEFINE_SPINLOCK(driver_lock); static DECLARE_BITMAP(dev_mask, TPM_NUM_DEVICES); @@ -1077,18 +1087,6 @@ static struct tpm_input_header savestate_header = { .ordinal = TPM_ORD_SAVESTATE }; -/* Bug workaround - some TPM's don't flush the most - * recently changed pcr on suspend, so force the flush - * with an extend to the selected _unused_ non-volatile pcr. - */ -static int tpm_suspend_pcr; -static int __init tpm_suspend_setup(char *str) -{ - get_option(&str, &tpm_suspend_pcr); - return 1; -} -__setup("tpm_suspend_pcr=", tpm_suspend_setup); - /* * We are about to suspend. Save the TPM state * so that it can be restored. diff --git a/drivers/char/virtio_console.c b/drivers/char/virtio_console.c index c810481a5bc2..6c1b676643a9 100644 --- a/drivers/char/virtio_console.c +++ b/drivers/char/virtio_console.c @@ -48,6 +48,9 @@ struct ports_driver_data { /* Used for exporting per-port information to debugfs */ struct dentry *debugfs_dir; + /* List of all the devices we're handling */ + struct list_head portdevs; + /* Number of devices this driver is handling */ unsigned int index; @@ -108,6 +111,9 @@ struct port_buffer { * ports for that device (vdev->priv). */ struct ports_device { + /* Next portdev in the list, head is in the pdrvdata struct */ + struct list_head list; + /* * Workqueue handlers where we process deferred work after * notification @@ -178,15 +184,21 @@ struct port { struct console cons; /* Each port associates with a separate char device */ - struct cdev cdev; + struct cdev *cdev; struct device *dev; + /* Reference-counting to handle port hot-unplugs and file operations */ + struct kref kref; + /* A waitqueue for poll() or blocking read operations */ wait_queue_head_t waitqueue; /* The 'name' of the port that we expose via sysfs properties */ char *name; + /* We can notify apps of host connect / disconnect events via SIGIO */ + struct fasync_struct *async_queue; + /* The 'id' to identify the port with the Host */ u32 id; @@ -221,6 +233,41 @@ out: return port; } +static struct port *find_port_by_devt_in_portdev(struct ports_device *portdev, + dev_t dev) +{ + struct port *port; + unsigned long flags; + + spin_lock_irqsave(&portdev->ports_lock, flags); + list_for_each_entry(port, &portdev->ports, list) + if (port->cdev->dev == dev) + goto out; + port = NULL; +out: + spin_unlock_irqrestore(&portdev->ports_lock, flags); + + return port; +} + +static struct port *find_port_by_devt(dev_t dev) +{ + struct ports_device *portdev; + struct port *port; + unsigned long flags; + + spin_lock_irqsave(&pdrvdata_lock, flags); + list_for_each_entry(portdev, &pdrvdata.portdevs, list) { + port = find_port_by_devt_in_portdev(portdev, dev); + if (port) + goto out; + } + port = NULL; +out: + spin_unlock_irqrestore(&pdrvdata_lock, flags); + return port; +} + static struct port *find_port_by_id(struct ports_device *portdev, u32 id) { struct port *port; @@ -410,7 +457,10 @@ static ssize_t __send_control_msg(struct ports_device *portdev, u32 port_id, static ssize_t send_control_msg(struct port *port, unsigned int event, unsigned int value) { - return __send_control_msg(port->portdev, port->id, event, value); + /* Did the port get unplugged before userspace closed it? */ + if (port->portdev) + return __send_control_msg(port->portdev, port->id, event, value); + return 0; } /* Callers must take the port->outvq_lock */ @@ -459,9 +509,12 @@ static ssize_t send_buf(struct port *port, void *in_buf, size_t in_count, /* * Wait till the host acknowledges it pushed out the data we - * sent. This is done for ports in blocking mode or for data - * from the hvc_console; the tty operations are performed with - * spinlocks held so we can't sleep here. + * sent. This is done for data from the hvc_console; the tty + * operations are performed with spinlocks held so we can't + * sleep here. An alternative would be to copy the data to a + * buffer and relax the spinning requirement. The downside is + * we need to kmalloc a GFP_ATOMIC buffer each time the + * console driver writes something out. */ while (!virtqueue_get_buf(out_vq, &len)) cpu_relax(); @@ -522,6 +575,10 @@ static ssize_t fill_readbuf(struct port *port, char *out_buf, size_t out_count, /* The condition that must be true for polling to end */ static bool will_read_block(struct port *port) { + if (!port->guest_connected) { + /* Port got hot-unplugged. Let's exit. */ + return false; + } return !port_has_data(port) && port->host_connected; } @@ -572,6 +629,9 @@ static ssize_t port_fops_read(struct file *filp, char __user *ubuf, if (ret < 0) return ret; } + /* Port got hot-unplugged. */ + if (!port->guest_connected) + return -ENODEV; /* * We could've received a disconnection message while we were * waiting for more data. @@ -613,6 +673,9 @@ static ssize_t port_fops_write(struct file *filp, const char __user *ubuf, if (ret < 0) return ret; } + /* Port got hot-unplugged. */ + if (!port->guest_connected) + return -ENODEV; count = min((size_t)(32 * 1024), count); @@ -626,6 +689,14 @@ static ssize_t port_fops_write(struct file *filp, const char __user *ubuf, goto free_buf; } + /* + * We now ask send_buf() to not spin for generic ports -- we + * can re-use the same code path that non-blocking file + * descriptors take for blocking file descriptors since the + * wait is already done and we're certain the write will go + * through to the host. + */ + nonblock = true; ret = send_buf(port, buf, count, nonblock); if (nonblock && ret > 0) @@ -645,6 +716,10 @@ static unsigned int port_fops_poll(struct file *filp, poll_table *wait) port = filp->private_data; poll_wait(filp, &port->waitqueue, wait); + if (!port->guest_connected) { + /* Port got unplugged */ + return POLLHUP; + } ret = 0; if (!will_read_block(port)) ret |= POLLIN | POLLRDNORM; @@ -656,6 +731,8 @@ static unsigned int port_fops_poll(struct file *filp, poll_table *wait) return ret; } +static void remove_port(struct kref *kref); + static int port_fops_release(struct inode *inode, struct file *filp) { struct port *port; @@ -676,6 +753,16 @@ static int port_fops_release(struct inode *inode, struct file *filp) reclaim_consumed_buffers(port); spin_unlock_irq(&port->outvq_lock); + /* + * Locks aren't necessary here as a port can't be opened after + * unplug, and if a port isn't unplugged, a kref would already + * exist for the port. Plus, taking ports_lock here would + * create a dependency on other locks taken by functions + * inside remove_port if we're the last holder of the port, + * creating many problems. + */ + kref_put(&port->kref, remove_port); + return 0; } @@ -683,22 +770,31 @@ static int port_fops_open(struct inode *inode, struct file *filp) { struct cdev *cdev = inode->i_cdev; struct port *port; + int ret; - port = container_of(cdev, struct port, cdev); + port = find_port_by_devt(cdev->dev); filp->private_data = port; + /* Prevent against a port getting hot-unplugged at the same time */ + spin_lock_irq(&port->portdev->ports_lock); + kref_get(&port->kref); + spin_unlock_irq(&port->portdev->ports_lock); + /* * Don't allow opening of console port devices -- that's done * via /dev/hvc */ - if (is_console_port(port)) - return -ENXIO; + if (is_console_port(port)) { + ret = -ENXIO; + goto out; + } /* Allow only one process to open a particular port at a time */ spin_lock_irq(&port->inbuf_lock); if (port->guest_connected) { spin_unlock_irq(&port->inbuf_lock); - return -EMFILE; + ret = -EMFILE; + goto out; } port->guest_connected = true; @@ -713,10 +809,23 @@ static int port_fops_open(struct inode *inode, struct file *filp) reclaim_consumed_buffers(port); spin_unlock_irq(&port->outvq_lock); + nonseekable_open(inode, filp); + /* Notify host of port being opened */ send_control_msg(filp->private_data, VIRTIO_CONSOLE_PORT_OPEN, 1); return 0; +out: + kref_put(&port->kref, remove_port); + return ret; +} + +static int port_fops_fasync(int fd, struct file *filp, int mode) +{ + struct port *port; + + port = filp->private_data; + return fasync_helper(fd, filp, mode, &port->async_queue); } /* @@ -732,6 +841,8 @@ static const struct file_operations port_fops = { .write = port_fops_write, .poll = port_fops_poll, .release = port_fops_release, + .fasync = port_fops_fasync, + .llseek = no_llseek, }; /* @@ -990,6 +1101,12 @@ static unsigned int fill_queue(struct virtqueue *vq, spinlock_t *lock) return nr_added_bufs; } +static void send_sigio_to_port(struct port *port) +{ + if (port->async_queue && port->guest_connected) + kill_fasync(&port->async_queue, SIGIO, POLL_OUT); +} + static int add_port(struct ports_device *portdev, u32 id) { char debugfs_name[16]; @@ -1004,6 +1121,7 @@ static int add_port(struct ports_device *portdev, u32 id) err = -ENOMEM; goto fail; } + kref_init(&port->kref); port->portdev = portdev; port->id = id; @@ -1011,6 +1129,7 @@ static int add_port(struct ports_device *portdev, u32 id) port->name = NULL; port->inbuf = NULL; port->cons.hvc = NULL; + port->async_queue = NULL; port->cons.ws.ws_row = port->cons.ws.ws_col = 0; @@ -1021,14 +1140,20 @@ static int add_port(struct ports_device *portdev, u32 id) port->in_vq = portdev->in_vqs[port->id]; port->out_vq = portdev->out_vqs[port->id]; - cdev_init(&port->cdev, &port_fops); + port->cdev = cdev_alloc(); + if (!port->cdev) { + dev_err(&port->portdev->vdev->dev, "Error allocating cdev\n"); + err = -ENOMEM; + goto free_port; + } + port->cdev->ops = &port_fops; devt = MKDEV(portdev->chr_major, id); - err = cdev_add(&port->cdev, devt, 1); + err = cdev_add(port->cdev, devt, 1); if (err < 0) { dev_err(&port->portdev->vdev->dev, "Error %d adding cdev for port %u\n", err, id); - goto free_port; + goto free_cdev; } port->dev = device_create(pdrvdata.class, &port->portdev->vdev->dev, devt, port, "vport%up%u", @@ -1093,7 +1218,7 @@ free_inbufs: free_device: device_destroy(pdrvdata.class, port->dev->devt); free_cdev: - cdev_del(&port->cdev); + cdev_del(port->cdev); free_port: kfree(port); fail: @@ -1102,21 +1227,45 @@ fail: return err; } -/* Remove all port-specific data. */ -static int remove_port(struct port *port) +/* No users remain, remove all port-specific data. */ +static void remove_port(struct kref *kref) +{ + struct port *port; + + port = container_of(kref, struct port, kref); + + sysfs_remove_group(&port->dev->kobj, &port_attribute_group); + device_destroy(pdrvdata.class, port->dev->devt); + cdev_del(port->cdev); + + kfree(port->name); + + debugfs_remove(port->debugfs_file); + + kfree(port); +} + +/* + * Port got unplugged. Remove port from portdev's list and drop the + * kref reference. If no userspace has this port opened, it will + * result in immediate removal the port. + */ +static void unplug_port(struct port *port) { struct port_buffer *buf; + spin_lock_irq(&port->portdev->ports_lock); + list_del(&port->list); + spin_unlock_irq(&port->portdev->ports_lock); + if (port->guest_connected) { port->guest_connected = false; port->host_connected = false; wake_up_interruptible(&port->waitqueue); - send_control_msg(port, VIRTIO_CONSOLE_PORT_OPEN, 0); - } - spin_lock_irq(&port->portdev->ports_lock); - list_del(&port->list); - spin_unlock_irq(&port->portdev->ports_lock); + /* Let the app know the port is going down. */ + send_sigio_to_port(port); + } if (is_console_port(port)) { spin_lock_irq(&pdrvdata_lock); @@ -1135,9 +1284,6 @@ static int remove_port(struct port *port) hvc_remove(port->cons.hvc); #endif } - sysfs_remove_group(&port->dev->kobj, &port_attribute_group); - device_destroy(pdrvdata.class, port->dev->devt); - cdev_del(&port->cdev); /* Remove unused data this port might have received. */ discard_port_data(port); @@ -1148,12 +1294,19 @@ static int remove_port(struct port *port) while ((buf = virtqueue_detach_unused_buf(port->in_vq))) free_buf(buf); - kfree(port->name); - - debugfs_remove(port->debugfs_file); + /* + * We should just assume the device itself has gone off -- + * else a close on an open port later will try to send out a + * control message. + */ + port->portdev = NULL; - kfree(port); - return 0; + /* + * Locks around here are not necessary - a port can't be + * opened after we removed the port struct from ports_list + * above. + */ + kref_put(&port->kref, remove_port); } /* Any private messages that the Host and Guest want to share */ @@ -1192,7 +1345,7 @@ static void handle_control_message(struct ports_device *portdev, add_port(portdev, cpkt->id); break; case VIRTIO_CONSOLE_PORT_REMOVE: - remove_port(port); + unplug_port(port); break; case VIRTIO_CONSOLE_CONSOLE_PORT: if (!cpkt->value) @@ -1234,6 +1387,12 @@ static void handle_control_message(struct ports_device *portdev, spin_lock_irq(&port->outvq_lock); reclaim_consumed_buffers(port); spin_unlock_irq(&port->outvq_lock); + + /* + * If the guest is connected, it'll be interested in + * knowing the host connection state changed. + */ + send_sigio_to_port(port); break; case VIRTIO_CONSOLE_PORT_NAME: /* @@ -1330,6 +1489,9 @@ static void in_intr(struct virtqueue *vq) wake_up_interruptible(&port->waitqueue); + /* Send a SIGIO indicating new data in case the process asked for it */ + send_sigio_to_port(port); + if (is_console_port(port) && hvc_poll(port->cons.hvc)) hvc_kick(); } @@ -1566,6 +1728,10 @@ static int __devinit virtcons_probe(struct virtio_device *vdev) add_port(portdev, 0); } + spin_lock_irq(&pdrvdata_lock); + list_add_tail(&portdev->list, &pdrvdata.portdevs); + spin_unlock_irq(&pdrvdata_lock); + __send_control_msg(portdev, VIRTIO_CONSOLE_BAD_ID, VIRTIO_CONSOLE_DEVICE_READY, 1); return 0; @@ -1589,23 +1755,41 @@ static void virtcons_remove(struct virtio_device *vdev) { struct ports_device *portdev; struct port *port, *port2; - struct port_buffer *buf; - unsigned int len; portdev = vdev->priv; + spin_lock_irq(&pdrvdata_lock); + list_del(&portdev->list); + spin_unlock_irq(&pdrvdata_lock); + + /* Disable interrupts for vqs */ + vdev->config->reset(vdev); + /* Finish up work that's lined up */ cancel_work_sync(&portdev->control_work); list_for_each_entry_safe(port, port2, &portdev->ports, list) - remove_port(port); + unplug_port(port); unregister_chrdev(portdev->chr_major, "virtio-portsdev"); - while ((buf = virtqueue_get_buf(portdev->c_ivq, &len))) - free_buf(buf); + /* + * When yanking out a device, we immediately lose the + * (device-side) queues. So there's no point in keeping the + * guest side around till we drop our final reference. This + * also means that any ports which are in an open state will + * have to just stop using the port, as the vqs are going + * away. + */ + if (use_multiport(portdev)) { + struct port_buffer *buf; + unsigned int len; - while ((buf = virtqueue_detach_unused_buf(portdev->c_ivq))) - free_buf(buf); + while ((buf = virtqueue_get_buf(portdev->c_ivq, &len))) + free_buf(buf); + + while ((buf = virtqueue_detach_unused_buf(portdev->c_ivq))) + free_buf(buf); + } vdev->config->del_vqs(vdev); kfree(portdev->in_vqs); @@ -1652,6 +1836,7 @@ static int __init init(void) PTR_ERR(pdrvdata.debugfs_dir)); } INIT_LIST_HEAD(&pdrvdata.consoles); + INIT_LIST_HEAD(&pdrvdata.portdevs); return register_virtio_driver(&virtio_console); } diff --git a/drivers/edac/Kconfig b/drivers/edac/Kconfig index 70bb350de996..9dbb28b9559f 100644 --- a/drivers/edac/Kconfig +++ b/drivers/edac/Kconfig @@ -39,7 +39,7 @@ config EDAC_DEBUG there're four debug levels (x=0,1,2,3 from low to high). Usually you should select 'N'. - config EDAC_DECODE_MCE +config EDAC_DECODE_MCE tristate "Decode MCEs in human-readable form (only on AMD for now)" depends on CPU_SUP_AMD && X86_MCE default y @@ -51,6 +51,16 @@ config EDAC_DEBUG which occur really early upon boot, before the module infrastructure has been initialized. +config EDAC_MCE_INJ + tristate "Simple MCE injection interface over /sysfs" + depends on EDAC_DECODE_MCE + default n + help + This is a simple interface to inject MCEs over /sysfs and test + the MCE decoding code in EDAC. + + This is currently AMD-only. + config EDAC_MM_EDAC tristate "Main Memory EDAC (Error Detection And Correction) reporting" help @@ -66,13 +76,13 @@ config EDAC_MCE config EDAC_AMD64 tristate "AMD64 (Opteron, Athlon64) K8, F10h, F11h" - depends on EDAC_MM_EDAC && K8_NB && X86_64 && PCI && EDAC_DECODE_MCE + depends on EDAC_MM_EDAC && AMD_NB && X86_64 && PCI && EDAC_DECODE_MCE help Support for error detection and correction on the AMD 64 Families of Memory Controllers (K8, F10h and F11h) config EDAC_AMD64_ERROR_INJECTION - bool "Sysfs Error Injection facilities" + bool "Sysfs HW Error injection facilities" depends on EDAC_AMD64 help Recent Opterons (Family 10h and later) provide for Memory Error diff --git a/drivers/edac/Makefile b/drivers/edac/Makefile index ca6b1bb24ccc..32c7bc93c525 100644 --- a/drivers/edac/Makefile +++ b/drivers/edac/Makefile @@ -17,6 +17,9 @@ ifdef CONFIG_PCI edac_core-objs += edac_pci.o edac_pci_sysfs.o endif +obj-$(CONFIG_EDAC_MCE_INJ) += mce_amd_inj.o + +edac_mce_amd-objs := mce_amd.o obj-$(CONFIG_EDAC_DECODE_MCE) += edac_mce_amd.o obj-$(CONFIG_EDAC_AMD76X) += amd76x_edac.o diff --git a/drivers/edac/amd64_edac.c b/drivers/edac/amd64_edac.c index e7d5d6b5dcf6..8521401bbd75 100644 --- a/drivers/edac/amd64_edac.c +++ b/drivers/edac/amd64_edac.c @@ -1,5 +1,5 @@ #include "amd64_edac.h" -#include <asm/k8.h> +#include <asm/amd_nb.h> static struct edac_pci_ctl_info *amd64_ctl_pci; @@ -2073,11 +2073,18 @@ static inline void __amd64_decode_bus_error(struct mem_ctl_info *mci, amd64_handle_ue(mci, info); } -void amd64_decode_bus_error(int node_id, struct err_regs *regs) +void amd64_decode_bus_error(int node_id, struct mce *m, u32 nbcfg) { struct mem_ctl_info *mci = mci_lookup[node_id]; + struct err_regs regs; - __amd64_decode_bus_error(mci, regs); + regs.nbsl = (u32) m->status; + regs.nbsh = (u32)(m->status >> 32); + regs.nbeal = (u32) m->addr; + regs.nbeah = (u32)(m->addr >> 32); + regs.nbcfg = nbcfg; + + __amd64_decode_bus_error(mci, ®s); /* * Check the UE bit of the NB status high register, if set generate some @@ -2086,7 +2093,7 @@ void amd64_decode_bus_error(int node_id, struct err_regs *regs) * * FIXME: this should go somewhere else, if at all. */ - if (regs->nbsh & K8_NBSH_UC_ERR && !report_gart_errors) + if (regs.nbsh & K8_NBSH_UC_ERR && !report_gart_errors) edac_mc_handle_ue_no_info(mci, "UE bit is set"); } @@ -2927,7 +2934,7 @@ static int __init amd64_edac_init(void) * to finish initialization of the MC instances. */ err = -ENODEV; - for (nb = 0; nb < num_k8_northbridges; nb++) { + for (nb = 0; nb < k8_northbridges.num; nb++) { if (!pvt_lookup[nb]) continue; diff --git a/drivers/edac/amd64_edac.h b/drivers/edac/amd64_edac.h index 613b9381e71a..044aee4f944d 100644 --- a/drivers/edac/amd64_edac.h +++ b/drivers/edac/amd64_edac.h @@ -72,7 +72,7 @@ #include <linux/edac.h> #include <asm/msr.h> #include "edac_core.h" -#include "edac_mce_amd.h" +#include "mce_amd.h" #define amd64_printk(level, fmt, arg...) \ edac_printk(level, "amd64", fmt, ##arg) @@ -482,11 +482,10 @@ extern const char *rrrr_msgs[16]; extern const char *to_msgs[2]; extern const char *pp_msgs[4]; extern const char *ii_msgs[4]; -extern const char *ext_msgs[32]; extern const char *htlink_msgs[8]; #ifdef CONFIG_EDAC_DEBUG -#define NUM_DBG_ATTRS 9 +#define NUM_DBG_ATTRS 5 #else #define NUM_DBG_ATTRS 0 #endif diff --git a/drivers/edac/amd64_edac_dbg.c b/drivers/edac/amd64_edac_dbg.c index 59cf2cf6e11e..e3562288f4ce 100644 --- a/drivers/edac/amd64_edac_dbg.c +++ b/drivers/edac/amd64_edac_dbg.c @@ -1,167 +1,16 @@ #include "amd64_edac.h" -/* - * accept a hex value and store it into the virtual error register file, field: - * nbeal and nbeah. Assume virtual error values have already been set for: NBSL, - * NBSH and NBCFG. Then proceed to map the error values to a MC, CSROW and - * CHANNEL - */ -static ssize_t amd64_nbea_store(struct mem_ctl_info *mci, const char *data, - size_t count) -{ - struct amd64_pvt *pvt = mci->pvt_info; - unsigned long long value; - int ret = 0; - - ret = strict_strtoull(data, 16, &value); - if (ret != -EINVAL) { - debugf0("received NBEA= 0x%llx\n", value); - - /* place the value into the virtual error packet */ - pvt->ctl_error_info.nbeal = (u32) value; - value >>= 32; - pvt->ctl_error_info.nbeah = (u32) value; - - /* Process the Mapping request */ - /* TODO: Add race prevention */ - amd_decode_nb_mce(pvt->mc_node_id, &pvt->ctl_error_info, 1); - - return count; - } - return ret; -} - -/* display back what the last NBEA (MCA NB Address (MC4_ADDR)) was written */ -static ssize_t amd64_nbea_show(struct mem_ctl_info *mci, char *data) -{ - struct amd64_pvt *pvt = mci->pvt_info; - u64 value; - - value = pvt->ctl_error_info.nbeah; - value <<= 32; - value |= pvt->ctl_error_info.nbeal; - - return sprintf(data, "%llx\n", value); -} - -/* store the NBSL (MCA NB Status Low (MC4_STATUS)) value user desires */ -static ssize_t amd64_nbsl_store(struct mem_ctl_info *mci, const char *data, - size_t count) -{ - struct amd64_pvt *pvt = mci->pvt_info; - unsigned long value; - int ret = 0; - - ret = strict_strtoul(data, 16, &value); - if (ret != -EINVAL) { - debugf0("received NBSL= 0x%lx\n", value); - - pvt->ctl_error_info.nbsl = (u32) value; - - return count; - } - return ret; -} - -/* display back what the last NBSL value written */ -static ssize_t amd64_nbsl_show(struct mem_ctl_info *mci, char *data) -{ - struct amd64_pvt *pvt = mci->pvt_info; - u32 value; - - value = pvt->ctl_error_info.nbsl; - - return sprintf(data, "%x\n", value); -} - -/* store the NBSH (MCA NB Status High) value user desires */ -static ssize_t amd64_nbsh_store(struct mem_ctl_info *mci, const char *data, - size_t count) -{ - struct amd64_pvt *pvt = mci->pvt_info; - unsigned long value; - int ret = 0; - - ret = strict_strtoul(data, 16, &value); - if (ret != -EINVAL) { - debugf0("received NBSH= 0x%lx\n", value); - - pvt->ctl_error_info.nbsh = (u32) value; - - return count; - } - return ret; -} - -/* display back what the last NBSH value written */ -static ssize_t amd64_nbsh_show(struct mem_ctl_info *mci, char *data) -{ - struct amd64_pvt *pvt = mci->pvt_info; - u32 value; - - value = pvt->ctl_error_info.nbsh; - - return sprintf(data, "%x\n", value); +#define EDAC_DCT_ATTR_SHOW(reg) \ +static ssize_t amd64_##reg##_show(struct mem_ctl_info *mci, char *data) \ +{ \ + struct amd64_pvt *pvt = mci->pvt_info; \ + return sprintf(data, "0x%016llx\n", (u64)pvt->reg); \ } -/* accept and store the NBCFG (MCA NB Configuration) value user desires */ -static ssize_t amd64_nbcfg_store(struct mem_ctl_info *mci, - const char *data, size_t count) -{ - struct amd64_pvt *pvt = mci->pvt_info; - unsigned long value; - int ret = 0; - - ret = strict_strtoul(data, 16, &value); - if (ret != -EINVAL) { - debugf0("received NBCFG= 0x%lx\n", value); - - pvt->ctl_error_info.nbcfg = (u32) value; - - return count; - } - return ret; -} - -/* various show routines for the controls of a MCI */ -static ssize_t amd64_nbcfg_show(struct mem_ctl_info *mci, char *data) -{ - struct amd64_pvt *pvt = mci->pvt_info; - - return sprintf(data, "%x\n", pvt->ctl_error_info.nbcfg); -} - - -static ssize_t amd64_dhar_show(struct mem_ctl_info *mci, char *data) -{ - struct amd64_pvt *pvt = mci->pvt_info; - - return sprintf(data, "%x\n", pvt->dhar); -} - - -static ssize_t amd64_dbam_show(struct mem_ctl_info *mci, char *data) -{ - struct amd64_pvt *pvt = mci->pvt_info; - - return sprintf(data, "%x\n", pvt->dbam0); -} - - -static ssize_t amd64_topmem_show(struct mem_ctl_info *mci, char *data) -{ - struct amd64_pvt *pvt = mci->pvt_info; - - return sprintf(data, "%llx\n", pvt->top_mem); -} - - -static ssize_t amd64_topmem2_show(struct mem_ctl_info *mci, char *data) -{ - struct amd64_pvt *pvt = mci->pvt_info; - - return sprintf(data, "%llx\n", pvt->top_mem2); -} +EDAC_DCT_ATTR_SHOW(dhar); +EDAC_DCT_ATTR_SHOW(dbam0); +EDAC_DCT_ATTR_SHOW(top_mem); +EDAC_DCT_ATTR_SHOW(top_mem2); static ssize_t amd64_hole_show(struct mem_ctl_info *mci, char *data) { @@ -182,38 +31,6 @@ struct mcidev_sysfs_attribute amd64_dbg_attrs[] = { { .attr = { - .name = "nbea_ctl", - .mode = (S_IRUGO | S_IWUSR) - }, - .show = amd64_nbea_show, - .store = amd64_nbea_store, - }, - { - .attr = { - .name = "nbsl_ctl", - .mode = (S_IRUGO | S_IWUSR) - }, - .show = amd64_nbsl_show, - .store = amd64_nbsl_store, - }, - { - .attr = { - .name = "nbsh_ctl", - .mode = (S_IRUGO | S_IWUSR) - }, - .show = amd64_nbsh_show, - .store = amd64_nbsh_store, - }, - { - .attr = { - .name = "nbcfg_ctl", - .mode = (S_IRUGO | S_IWUSR) - }, - .show = amd64_nbcfg_show, - .store = amd64_nbcfg_store, - }, - { - .attr = { .name = "dhar", .mode = (S_IRUGO) }, @@ -225,7 +42,7 @@ struct mcidev_sysfs_attribute amd64_dbg_attrs[] = { .name = "dbam", .mode = (S_IRUGO) }, - .show = amd64_dbam_show, + .show = amd64_dbam0_show, .store = NULL, }, { @@ -233,7 +50,7 @@ struct mcidev_sysfs_attribute amd64_dbg_attrs[] = { .name = "topmem", .mode = (S_IRUGO) }, - .show = amd64_topmem_show, + .show = amd64_top_mem_show, .store = NULL, }, { @@ -241,7 +58,7 @@ struct mcidev_sysfs_attribute amd64_dbg_attrs[] = { .name = "topmem2", .mode = (S_IRUGO) }, - .show = amd64_topmem2_show, + .show = amd64_top_mem2_show, .store = NULL, }, { diff --git a/drivers/edac/edac_device_sysfs.c b/drivers/edac/edac_device_sysfs.c index 070968178a24..2941dca91aae 100644 --- a/drivers/edac/edac_device_sysfs.c +++ b/drivers/edac/edac_device_sysfs.c @@ -13,6 +13,7 @@ #include <linux/ctype.h> #include <linux/module.h> #include <linux/slab.h> +#include <linux/edac.h> #include "edac_core.h" #include "edac_module.h" @@ -235,7 +236,7 @@ int edac_device_register_sysfs_main_kobj(struct edac_device_ctl_info *edac_dev) debugf1("%s()\n", __func__); /* get the /sys/devices/system/edac reference */ - edac_class = edac_get_edac_class(); + edac_class = edac_get_sysfs_class(); if (edac_class == NULL) { debugf1("%s() no edac_class error\n", __func__); err = -ENODEV; @@ -255,7 +256,7 @@ int edac_device_register_sysfs_main_kobj(struct edac_device_ctl_info *edac_dev) if (!try_module_get(edac_dev->owner)) { err = -ENODEV; - goto err_out; + goto err_mod_get; } /* register */ @@ -282,6 +283,9 @@ int edac_device_register_sysfs_main_kobj(struct edac_device_ctl_info *edac_dev) err_kobj_reg: module_put(edac_dev->owner); +err_mod_get: + edac_put_sysfs_class(); + err_out: return err; } @@ -290,12 +294,11 @@ err_out: * edac_device_unregister_sysfs_main_kobj: * the '..../edac/<name>' kobject */ -void edac_device_unregister_sysfs_main_kobj( - struct edac_device_ctl_info *edac_dev) +void edac_device_unregister_sysfs_main_kobj(struct edac_device_ctl_info *dev) { debugf0("%s()\n", __func__); debugf4("%s() name of kobject is: %s\n", - __func__, kobject_name(&edac_dev->kobj)); + __func__, kobject_name(&dev->kobj)); /* * Unregister the edac device's kobject and @@ -304,7 +307,8 @@ void edac_device_unregister_sysfs_main_kobj( * a) module_put() this module * b) 'kfree' the memory */ - kobject_put(&edac_dev->kobj); + kobject_put(&dev->kobj); + edac_put_sysfs_class(); } /* edac_dev -> instance information */ diff --git a/drivers/edac/edac_mc_sysfs.c b/drivers/edac/edac_mc_sysfs.c index 8aad94d10c0c..a4135860149b 100644 --- a/drivers/edac/edac_mc_sysfs.c +++ b/drivers/edac/edac_mc_sysfs.c @@ -11,6 +11,7 @@ #include <linux/ctype.h> #include <linux/slab.h> +#include <linux/edac.h> #include <linux/bug.h> #include "edac_core.h" @@ -1011,13 +1012,13 @@ void edac_remove_sysfs_mci_device(struct mem_ctl_info *mci) */ int edac_sysfs_setup_mc_kset(void) { - int err = 0; + int err = -EINVAL; struct sysdev_class *edac_class; debugf1("%s()\n", __func__); /* get the /sys/devices/system/edac class reference */ - edac_class = edac_get_edac_class(); + edac_class = edac_get_sysfs_class(); if (edac_class == NULL) { debugf1("%s() no edac_class error=%d\n", __func__, err); goto fail_out; @@ -1028,15 +1029,16 @@ int edac_sysfs_setup_mc_kset(void) if (!mc_kset) { err = -ENOMEM; debugf1("%s() Failed to register '.../edac/mc'\n", __func__); - goto fail_out; + goto fail_kset; } debugf1("%s() Registered '.../edac/mc' kobject\n", __func__); return 0; +fail_kset: + edac_put_sysfs_class(); - /* error unwind stack */ fail_out: return err; } @@ -1049,5 +1051,6 @@ fail_out: void edac_sysfs_teardown_mc_kset(void) { kset_unregister(mc_kset); + edac_put_sysfs_class(); } diff --git a/drivers/edac/edac_mce_amd.c b/drivers/edac/edac_mce_amd.c deleted file mode 100644 index 9014df6f605d..000000000000 --- a/drivers/edac/edac_mce_amd.c +++ /dev/null @@ -1,452 +0,0 @@ -#include <linux/module.h> -#include "edac_mce_amd.h" - -static bool report_gart_errors; -static void (*nb_bus_decoder)(int node_id, struct err_regs *regs); - -void amd_report_gart_errors(bool v) -{ - report_gart_errors = v; -} -EXPORT_SYMBOL_GPL(amd_report_gart_errors); - -void amd_register_ecc_decoder(void (*f)(int, struct err_regs *)) -{ - nb_bus_decoder = f; -} -EXPORT_SYMBOL_GPL(amd_register_ecc_decoder); - -void amd_unregister_ecc_decoder(void (*f)(int, struct err_regs *)) -{ - if (nb_bus_decoder) { - WARN_ON(nb_bus_decoder != f); - - nb_bus_decoder = NULL; - } -} -EXPORT_SYMBOL_GPL(amd_unregister_ecc_decoder); - -/* - * string representation for the different MCA reported error types, see F3x48 - * or MSR0000_0411. - */ -const char *tt_msgs[] = { /* transaction type */ - "instruction", - "data", - "generic", - "reserved" -}; -EXPORT_SYMBOL_GPL(tt_msgs); - -const char *ll_msgs[] = { /* cache level */ - "L0", - "L1", - "L2", - "L3/generic" -}; -EXPORT_SYMBOL_GPL(ll_msgs); - -const char *rrrr_msgs[] = { - "generic", - "generic read", - "generic write", - "data read", - "data write", - "inst fetch", - "prefetch", - "evict", - "snoop", - "reserved RRRR= 9", - "reserved RRRR= 10", - "reserved RRRR= 11", - "reserved RRRR= 12", - "reserved RRRR= 13", - "reserved RRRR= 14", - "reserved RRRR= 15" -}; -EXPORT_SYMBOL_GPL(rrrr_msgs); - -const char *pp_msgs[] = { /* participating processor */ - "local node originated (SRC)", - "local node responded to request (RES)", - "local node observed as 3rd party (OBS)", - "generic" -}; -EXPORT_SYMBOL_GPL(pp_msgs); - -const char *to_msgs[] = { - "no timeout", - "timed out" -}; -EXPORT_SYMBOL_GPL(to_msgs); - -const char *ii_msgs[] = { /* memory or i/o */ - "mem access", - "reserved", - "i/o access", - "generic" -}; -EXPORT_SYMBOL_GPL(ii_msgs); - -/* - * Map the 4 or 5 (family-specific) bits of Extended Error code to the - * string table. - */ -const char *ext_msgs[] = { - "K8 ECC error", /* 0_0000b */ - "CRC error on link", /* 0_0001b */ - "Sync error packets on link", /* 0_0010b */ - "Master Abort during link operation", /* 0_0011b */ - "Target Abort during link operation", /* 0_0100b */ - "Invalid GART PTE entry during table walk", /* 0_0101b */ - "Unsupported atomic RMW command received", /* 0_0110b */ - "WDT error: NB transaction timeout", /* 0_0111b */ - "ECC/ChipKill ECC error", /* 0_1000b */ - "SVM DEV Error", /* 0_1001b */ - "Link Data error", /* 0_1010b */ - "Link/L3/Probe Filter Protocol error", /* 0_1011b */ - "NB Internal Arrays Parity error", /* 0_1100b */ - "DRAM Address/Control Parity error", /* 0_1101b */ - "Link Transmission error", /* 0_1110b */ - "GART/DEV Table Walk Data error" /* 0_1111b */ - "Res 0x100 error", /* 1_0000b */ - "Res 0x101 error", /* 1_0001b */ - "Res 0x102 error", /* 1_0010b */ - "Res 0x103 error", /* 1_0011b */ - "Res 0x104 error", /* 1_0100b */ - "Res 0x105 error", /* 1_0101b */ - "Res 0x106 error", /* 1_0110b */ - "Res 0x107 error", /* 1_0111b */ - "Res 0x108 error", /* 1_1000b */ - "Res 0x109 error", /* 1_1001b */ - "Res 0x10A error", /* 1_1010b */ - "Res 0x10B error", /* 1_1011b */ - "ECC error in L3 Cache Data", /* 1_1100b */ - "L3 Cache Tag error", /* 1_1101b */ - "L3 Cache LRU Parity error", /* 1_1110b */ - "Probe Filter error" /* 1_1111b */ -}; -EXPORT_SYMBOL_GPL(ext_msgs); - -static void amd_decode_dc_mce(u64 mc0_status) -{ - u32 ec = mc0_status & 0xffff; - u32 xec = (mc0_status >> 16) & 0xf; - - pr_emerg("Data Cache Error"); - - if (xec == 1 && TLB_ERROR(ec)) - pr_cont(": %s TLB multimatch.\n", LL_MSG(ec)); - else if (xec == 0) { - if (mc0_status & (1ULL << 40)) - pr_cont(" during Data Scrub.\n"); - else if (TLB_ERROR(ec)) - pr_cont(": %s TLB parity error.\n", LL_MSG(ec)); - else if (MEM_ERROR(ec)) { - u8 ll = ec & 0x3; - u8 tt = (ec >> 2) & 0x3; - u8 rrrr = (ec >> 4) & 0xf; - - /* see F10h BKDG (31116), Table 92. */ - if (ll == 0x1) { - if (tt != 0x1) - goto wrong_dc_mce; - - pr_cont(": Data/Tag %s error.\n", RRRR_MSG(ec)); - - } else if (ll == 0x2 && rrrr == 0x3) - pr_cont(" during L1 linefill from L2.\n"); - else - goto wrong_dc_mce; - } else if (BUS_ERROR(ec) && boot_cpu_data.x86 == 0xf) - pr_cont(" during system linefill.\n"); - else - goto wrong_dc_mce; - } else - goto wrong_dc_mce; - - return; - -wrong_dc_mce: - pr_warning("Corrupted DC MCE info?\n"); -} - -static void amd_decode_ic_mce(u64 mc1_status) -{ - u32 ec = mc1_status & 0xffff; - u32 xec = (mc1_status >> 16) & 0xf; - - pr_emerg("Instruction Cache Error"); - - if (xec == 1 && TLB_ERROR(ec)) - pr_cont(": %s TLB multimatch.\n", LL_MSG(ec)); - else if (xec == 0) { - if (TLB_ERROR(ec)) - pr_cont(": %s TLB Parity error.\n", LL_MSG(ec)); - else if (BUS_ERROR(ec)) { - if (boot_cpu_data.x86 == 0xf && - (mc1_status & (1ULL << 58))) - pr_cont(" during system linefill.\n"); - else - pr_cont(" during attempted NB data read.\n"); - } else if (MEM_ERROR(ec)) { - u8 ll = ec & 0x3; - u8 rrrr = (ec >> 4) & 0xf; - - if (ll == 0x2) - pr_cont(" during a linefill from L2.\n"); - else if (ll == 0x1) { - - switch (rrrr) { - case 0x5: - pr_cont(": Parity error during " - "data load.\n"); - break; - - case 0x7: - pr_cont(": Copyback Parity/Victim" - " error.\n"); - break; - - case 0x8: - pr_cont(": Tag Snoop error.\n"); - break; - - default: - goto wrong_ic_mce; - break; - } - } - } else - goto wrong_ic_mce; - } else - goto wrong_ic_mce; - - return; - -wrong_ic_mce: - pr_warning("Corrupted IC MCE info?\n"); -} - -static void amd_decode_bu_mce(u64 mc2_status) -{ - u32 ec = mc2_status & 0xffff; - u32 xec = (mc2_status >> 16) & 0xf; - - pr_emerg("Bus Unit Error"); - - if (xec == 0x1) - pr_cont(" in the write data buffers.\n"); - else if (xec == 0x3) - pr_cont(" in the victim data buffers.\n"); - else if (xec == 0x2 && MEM_ERROR(ec)) - pr_cont(": %s error in the L2 cache tags.\n", RRRR_MSG(ec)); - else if (xec == 0x0) { - if (TLB_ERROR(ec)) - pr_cont(": %s error in a Page Descriptor Cache or " - "Guest TLB.\n", TT_MSG(ec)); - else if (BUS_ERROR(ec)) - pr_cont(": %s/ECC error in data read from NB: %s.\n", - RRRR_MSG(ec), PP_MSG(ec)); - else if (MEM_ERROR(ec)) { - u8 rrrr = (ec >> 4) & 0xf; - - if (rrrr >= 0x7) - pr_cont(": %s error during data copyback.\n", - RRRR_MSG(ec)); - else if (rrrr <= 0x1) - pr_cont(": %s parity/ECC error during data " - "access from L2.\n", RRRR_MSG(ec)); - else - goto wrong_bu_mce; - } else - goto wrong_bu_mce; - } else - goto wrong_bu_mce; - - return; - -wrong_bu_mce: - pr_warning("Corrupted BU MCE info?\n"); -} - -static void amd_decode_ls_mce(u64 mc3_status) -{ - u32 ec = mc3_status & 0xffff; - u32 xec = (mc3_status >> 16) & 0xf; - - pr_emerg("Load Store Error"); - - if (xec == 0x0) { - u8 rrrr = (ec >> 4) & 0xf; - - if (!BUS_ERROR(ec) || (rrrr != 0x3 && rrrr != 0x4)) - goto wrong_ls_mce; - - pr_cont(" during %s.\n", RRRR_MSG(ec)); - } - return; - -wrong_ls_mce: - pr_warning("Corrupted LS MCE info?\n"); -} - -void amd_decode_nb_mce(int node_id, struct err_regs *regs, int handle_errors) -{ - u32 ec = ERROR_CODE(regs->nbsl); - - if (!handle_errors) - return; - - /* - * GART TLB error reporting is disabled by default. Bail out early. - */ - if (TLB_ERROR(ec) && !report_gart_errors) - return; - - pr_emerg("Northbridge Error, node %d", node_id); - - /* - * F10h, revD can disable ErrCpu[3:0] so check that first and also the - * value encoding has changed so interpret those differently - */ - if ((boot_cpu_data.x86 == 0x10) && - (boot_cpu_data.x86_model > 7)) { - if (regs->nbsh & K8_NBSH_ERR_CPU_VAL) - pr_cont(", core: %u\n", (u8)(regs->nbsh & 0xf)); - } else { - u8 assoc_cpus = regs->nbsh & 0xf; - - if (assoc_cpus > 0) - pr_cont(", core: %d", fls(assoc_cpus) - 1); - - pr_cont("\n"); - } - - pr_emerg("%s.\n", EXT_ERR_MSG(regs->nbsl)); - - if (BUS_ERROR(ec) && nb_bus_decoder) - nb_bus_decoder(node_id, regs); -} -EXPORT_SYMBOL_GPL(amd_decode_nb_mce); - -static void amd_decode_fr_mce(u64 mc5_status) -{ - /* we have only one error signature so match all fields at once. */ - if ((mc5_status & 0xffff) == 0x0f0f) - pr_emerg(" FR Error: CPU Watchdog timer expire.\n"); - else - pr_warning("Corrupted FR MCE info?\n"); -} - -static inline void amd_decode_err_code(unsigned int ec) -{ - if (TLB_ERROR(ec)) { - pr_emerg("Transaction: %s, Cache Level %s\n", - TT_MSG(ec), LL_MSG(ec)); - } else if (MEM_ERROR(ec)) { - pr_emerg("Transaction: %s, Type: %s, Cache Level: %s", - RRRR_MSG(ec), TT_MSG(ec), LL_MSG(ec)); - } else if (BUS_ERROR(ec)) { - pr_emerg("Transaction type: %s(%s), %s, Cache Level: %s, " - "Participating Processor: %s\n", - RRRR_MSG(ec), II_MSG(ec), TO_MSG(ec), LL_MSG(ec), - PP_MSG(ec)); - } else - pr_warning("Huh? Unknown MCE error 0x%x\n", ec); -} - -static int amd_decode_mce(struct notifier_block *nb, unsigned long val, - void *data) -{ - struct mce *m = (struct mce *)data; - struct err_regs regs; - int node, ecc; - - pr_emerg("MC%d_STATUS: ", m->bank); - - pr_cont("%sorrected error, other errors lost: %s, " - "CPU context corrupt: %s", - ((m->status & MCI_STATUS_UC) ? "Unc" : "C"), - ((m->status & MCI_STATUS_OVER) ? "yes" : "no"), - ((m->status & MCI_STATUS_PCC) ? "yes" : "no")); - - /* do the two bits[14:13] together */ - ecc = (m->status >> 45) & 0x3; - if (ecc) - pr_cont(", %sECC Error", ((ecc == 2) ? "C" : "U")); - - pr_cont("\n"); - - switch (m->bank) { - case 0: - amd_decode_dc_mce(m->status); - break; - - case 1: - amd_decode_ic_mce(m->status); - break; - - case 2: - amd_decode_bu_mce(m->status); - break; - - case 3: - amd_decode_ls_mce(m->status); - break; - - case 4: - regs.nbsl = (u32) m->status; - regs.nbsh = (u32)(m->status >> 32); - regs.nbeal = (u32) m->addr; - regs.nbeah = (u32)(m->addr >> 32); - node = amd_get_nb_id(m->extcpu); - - amd_decode_nb_mce(node, ®s, 1); - break; - - case 5: - amd_decode_fr_mce(m->status); - break; - - default: - break; - } - - amd_decode_err_code(m->status & 0xffff); - - return NOTIFY_STOP; -} - -static struct notifier_block amd_mce_dec_nb = { - .notifier_call = amd_decode_mce, -}; - -static int __init mce_amd_init(void) -{ - /* - * We can decode MCEs for K8, F10h and F11h CPUs: - */ - if (boot_cpu_data.x86_vendor != X86_VENDOR_AMD) - return 0; - - if (boot_cpu_data.x86 < 0xf || boot_cpu_data.x86 > 0x11) - return 0; - - atomic_notifier_chain_register(&x86_mce_decoder_chain, &amd_mce_dec_nb); - - return 0; -} -early_initcall(mce_amd_init); - -#ifdef MODULE -static void __exit mce_amd_exit(void) -{ - atomic_notifier_chain_unregister(&x86_mce_decoder_chain, &amd_mce_dec_nb); -} - -MODULE_DESCRIPTION("AMD MCE decoder"); -MODULE_ALIAS("edac-mce-amd"); -MODULE_LICENSE("GPL"); -module_exit(mce_amd_exit); -#endif diff --git a/drivers/edac/edac_module.c b/drivers/edac/edac_module.c index 7e1374afd967..be4b075c3098 100644 --- a/drivers/edac/edac_module.c +++ b/drivers/edac/edac_module.c @@ -27,15 +27,6 @@ EXPORT_SYMBOL_GPL(edac_debug_level); struct workqueue_struct *edac_workqueue; /* - * sysfs object: /sys/devices/system/edac - * need to export to other files in this modules - */ -static struct sysdev_class edac_class = { - .name = "edac", -}; -static int edac_class_valid; - -/* * edac_op_state_to_string() */ char *edac_op_state_to_string(int opstate) @@ -55,60 +46,6 @@ char *edac_op_state_to_string(int opstate) } /* - * edac_get_edac_class() - * - * return pointer to the edac class of 'edac' - */ -struct sysdev_class *edac_get_edac_class(void) -{ - struct sysdev_class *classptr = NULL; - - if (edac_class_valid) - classptr = &edac_class; - - return classptr; -} - -/* - * edac_register_sysfs_edac_name() - * - * register the 'edac' into /sys/devices/system - * - * return: - * 0 success - * !0 error - */ -static int edac_register_sysfs_edac_name(void) -{ - int err; - - /* create the /sys/devices/system/edac directory */ - err = sysdev_class_register(&edac_class); - - if (err) { - debugf1("%s() error=%d\n", __func__, err); - return err; - } - - edac_class_valid = 1; - return 0; -} - -/* - * sysdev_class_unregister() - * - * unregister the 'edac' from /sys/devices/system - */ -static void edac_unregister_sysfs_edac_name(void) -{ - /* only if currently registered, then unregister it */ - if (edac_class_valid) - sysdev_class_unregister(&edac_class); - - edac_class_valid = 0; -} - -/* * edac_workqueue_setup * initialize the edac work queue for polling operations */ @@ -154,21 +91,11 @@ static int __init edac_init(void) edac_pci_clear_parity_errors(); /* - * perform the registration of the /sys/devices/system/edac class object - */ - if (edac_register_sysfs_edac_name()) { - edac_printk(KERN_ERR, EDAC_MC, - "Error initializing 'edac' kobject\n"); - err = -ENODEV; - goto error; - } - - /* * now set up the mc_kset under the edac class object */ err = edac_sysfs_setup_mc_kset(); if (err) - goto sysfs_setup_fail; + goto error; /* Setup/Initialize the workq for this core */ err = edac_workqueue_setup(); @@ -183,9 +110,6 @@ static int __init edac_init(void) workq_fail: edac_sysfs_teardown_mc_kset(); -sysfs_setup_fail: - edac_unregister_sysfs_edac_name(); - error: return err; } @@ -201,7 +125,6 @@ static void __exit edac_exit(void) /* tear down the various subsystems */ edac_workqueue_teardown(); edac_sysfs_teardown_mc_kset(); - edac_unregister_sysfs_edac_name(); } /* diff --git a/drivers/edac/edac_module.h b/drivers/edac/edac_module.h index 233d4798c3aa..17aabb7b90ec 100644 --- a/drivers/edac/edac_module.h +++ b/drivers/edac/edac_module.h @@ -42,7 +42,6 @@ extern void edac_device_unregister_sysfs_main_kobj( struct edac_device_ctl_info *edac_dev); extern int edac_device_create_sysfs(struct edac_device_ctl_info *edac_dev); extern void edac_device_remove_sysfs(struct edac_device_ctl_info *edac_dev); -extern struct sysdev_class *edac_get_edac_class(void); /* edac core workqueue: single CPU mode */ extern struct workqueue_struct *edac_workqueue; diff --git a/drivers/edac/edac_pci_sysfs.c b/drivers/edac/edac_pci_sysfs.c index c39697df9cb4..023b01cb5175 100644 --- a/drivers/edac/edac_pci_sysfs.c +++ b/drivers/edac/edac_pci_sysfs.c @@ -7,7 +7,7 @@ * */ #include <linux/module.h> -#include <linux/sysdev.h> +#include <linux/edac.h> #include <linux/slab.h> #include <linux/ctype.h> @@ -354,7 +354,7 @@ static int edac_pci_main_kobj_setup(void) /* First time, so create the main kobject and its * controls and atributes */ - edac_class = edac_get_edac_class(); + edac_class = edac_get_sysfs_class(); if (edac_class == NULL) { debugf1("%s() no edac_class\n", __func__); err = -ENODEV; @@ -368,7 +368,7 @@ static int edac_pci_main_kobj_setup(void) if (!try_module_get(THIS_MODULE)) { debugf1("%s() try_module_get() failed\n", __func__); err = -ENODEV; - goto decrement_count_fail; + goto mod_get_fail; } edac_pci_top_main_kobj = kzalloc(sizeof(struct kobject), GFP_KERNEL); @@ -403,6 +403,9 @@ kobject_init_and_add_fail: kzalloc_fail: module_put(THIS_MODULE); +mod_get_fail: + edac_put_sysfs_class(); + decrement_count_fail: /* if are on this error exit, nothing to tear down */ atomic_dec(&edac_pci_sysfs_refcount); @@ -429,6 +432,7 @@ static void edac_pci_main_kobj_teardown(void) __func__); kobject_put(edac_pci_top_main_kobj); } + edac_put_sysfs_class(); } /* diff --git a/drivers/edac/edac_stub.c b/drivers/edac/edac_stub.c index 20b428aa155e..aab970760b75 100644 --- a/drivers/edac/edac_stub.c +++ b/drivers/edac/edac_stub.c @@ -3,10 +3,13 @@ * * Author: Dave Jiang <djiang@mvista.com> * - * 2007 (c) MontaVista Software, Inc. This file is licensed under - * the terms of the GNU General Public License version 2. This program - * is licensed "as is" without any warranty of any kind, whether express - * or implied. + * 2007 (c) MontaVista Software, Inc. + * 2010 (c) Advanced Micro Devices Inc. + * Borislav Petkov <borislav.petkov@amd.com> + * + * This file is licensed under the terms of the GNU General Public + * License version 2. This program is licensed "as is" without any + * warranty of any kind, whether express or implied. * */ #include <linux/module.h> @@ -23,6 +26,8 @@ EXPORT_SYMBOL_GPL(edac_handlers); int edac_err_assert = 0; EXPORT_SYMBOL_GPL(edac_err_assert); +static atomic_t edac_class_valid = ATOMIC_INIT(0); + /* * called to determine if there is an EDAC driver interested in * knowing an event (such as NMI) occurred @@ -44,3 +49,41 @@ void edac_atomic_assert_error(void) edac_err_assert++; } EXPORT_SYMBOL_GPL(edac_atomic_assert_error); + +/* + * sysfs object: /sys/devices/system/edac + * need to export to other files + */ +struct sysdev_class edac_class = { + .name = "edac", +}; +EXPORT_SYMBOL_GPL(edac_class); + +/* return pointer to the 'edac' node in sysfs */ +struct sysdev_class *edac_get_sysfs_class(void) +{ + int err = 0; + + if (atomic_read(&edac_class_valid)) + goto out; + + /* create the /sys/devices/system/edac directory */ + err = sysdev_class_register(&edac_class); + if (err) { + printk(KERN_ERR "Error registering toplevel EDAC sysfs dir\n"); + return NULL; + } + +out: + atomic_inc(&edac_class_valid); + return &edac_class; +} +EXPORT_SYMBOL_GPL(edac_get_sysfs_class); + +void edac_put_sysfs_class(void) +{ + /* last user unregisters it */ + if (atomic_dec_and_test(&edac_class_valid)) + sysdev_class_unregister(&edac_class); +} +EXPORT_SYMBOL_GPL(edac_put_sysfs_class); diff --git a/drivers/edac/mce_amd.c b/drivers/edac/mce_amd.c new file mode 100644 index 000000000000..c0181093b490 --- /dev/null +++ b/drivers/edac/mce_amd.c @@ -0,0 +1,680 @@ +#include <linux/module.h> +#include <linux/slab.h> + +#include "mce_amd.h" + +static struct amd_decoder_ops *fam_ops; + +static u8 nb_err_cpumask = 0xf; + +static bool report_gart_errors; +static void (*nb_bus_decoder)(int node_id, struct mce *m, u32 nbcfg); + +void amd_report_gart_errors(bool v) +{ + report_gart_errors = v; +} +EXPORT_SYMBOL_GPL(amd_report_gart_errors); + +void amd_register_ecc_decoder(void (*f)(int, struct mce *, u32)) +{ + nb_bus_decoder = f; +} +EXPORT_SYMBOL_GPL(amd_register_ecc_decoder); + +void amd_unregister_ecc_decoder(void (*f)(int, struct mce *, u32)) +{ + if (nb_bus_decoder) { + WARN_ON(nb_bus_decoder != f); + + nb_bus_decoder = NULL; + } +} +EXPORT_SYMBOL_GPL(amd_unregister_ecc_decoder); + +/* + * string representation for the different MCA reported error types, see F3x48 + * or MSR0000_0411. + */ + +/* transaction type */ +const char *tt_msgs[] = { "INSN", "DATA", "GEN", "RESV" }; +EXPORT_SYMBOL_GPL(tt_msgs); + +/* cache level */ +const char *ll_msgs[] = { "RESV", "L1", "L2", "L3/GEN" }; +EXPORT_SYMBOL_GPL(ll_msgs); + +/* memory transaction type */ +const char *rrrr_msgs[] = { + "GEN", "RD", "WR", "DRD", "DWR", "IRD", "PRF", "EV", "SNP" +}; +EXPORT_SYMBOL_GPL(rrrr_msgs); + +/* participating processor */ +const char *pp_msgs[] = { "SRC", "RES", "OBS", "GEN" }; +EXPORT_SYMBOL_GPL(pp_msgs); + +/* request timeout */ +const char *to_msgs[] = { "no timeout", "timed out" }; +EXPORT_SYMBOL_GPL(to_msgs); + +/* memory or i/o */ +const char *ii_msgs[] = { "MEM", "RESV", "IO", "GEN" }; +EXPORT_SYMBOL_GPL(ii_msgs); + +static const char *f10h_nb_mce_desc[] = { + "HT link data error", + "Protocol error (link, L3, probe filter, etc.)", + "Parity error in NB-internal arrays", + "Link Retry due to IO link transmission error", + "L3 ECC data cache error", + "ECC error in L3 cache tag", + "L3 LRU parity bits error", + "ECC Error in the Probe Filter directory" +}; + +static bool f12h_dc_mce(u16 ec) +{ + bool ret = false; + + if (MEM_ERROR(ec)) { + u8 ll = ec & 0x3; + ret = true; + + if (ll == LL_L2) + pr_cont("during L1 linefill from L2.\n"); + else if (ll == LL_L1) + pr_cont("Data/Tag %s error.\n", RRRR_MSG(ec)); + else + ret = false; + } + return ret; +} + +static bool f10h_dc_mce(u16 ec) +{ + u8 r4 = (ec >> 4) & 0xf; + u8 ll = ec & 0x3; + + if (r4 == R4_GEN && ll == LL_L1) { + pr_cont("during data scrub.\n"); + return true; + } + return f12h_dc_mce(ec); +} + +static bool k8_dc_mce(u16 ec) +{ + if (BUS_ERROR(ec)) { + pr_cont("during system linefill.\n"); + return true; + } + + return f10h_dc_mce(ec); +} + +static bool f14h_dc_mce(u16 ec) +{ + u8 r4 = (ec >> 4) & 0xf; + u8 ll = ec & 0x3; + u8 tt = (ec >> 2) & 0x3; + u8 ii = tt; + bool ret = true; + + if (MEM_ERROR(ec)) { + + if (tt != TT_DATA || ll != LL_L1) + return false; + + switch (r4) { + case R4_DRD: + case R4_DWR: + pr_cont("Data/Tag parity error due to %s.\n", + (r4 == R4_DRD ? "load/hw prf" : "store")); + break; + case R4_EVICT: + pr_cont("Copyback parity error on a tag miss.\n"); + break; + case R4_SNOOP: + pr_cont("Tag parity error during snoop.\n"); + break; + default: + ret = false; + } + } else if (BUS_ERROR(ec)) { + + if ((ii != II_MEM && ii != II_IO) || ll != LL_LG) + return false; + + pr_cont("System read data error on a "); + + switch (r4) { + case R4_RD: + pr_cont("TLB reload.\n"); + break; + case R4_DWR: + pr_cont("store.\n"); + break; + case R4_DRD: + pr_cont("load.\n"); + break; + default: + ret = false; + } + } else { + ret = false; + } + + return ret; +} + +static void amd_decode_dc_mce(struct mce *m) +{ + u16 ec = m->status & 0xffff; + u8 xec = (m->status >> 16) & 0xf; + + pr_emerg(HW_ERR "Data Cache Error: "); + + /* TLB error signatures are the same across families */ + if (TLB_ERROR(ec)) { + u8 tt = (ec >> 2) & 0x3; + + if (tt == TT_DATA) { + pr_cont("%s TLB %s.\n", LL_MSG(ec), + (xec ? "multimatch" : "parity error")); + return; + } + else + goto wrong_dc_mce; + } + + if (!fam_ops->dc_mce(ec)) + goto wrong_dc_mce; + + return; + +wrong_dc_mce: + pr_emerg(HW_ERR "Corrupted DC MCE info?\n"); +} + +static bool k8_ic_mce(u16 ec) +{ + u8 ll = ec & 0x3; + u8 r4 = (ec >> 4) & 0xf; + bool ret = true; + + if (!MEM_ERROR(ec)) + return false; + + if (ll == 0x2) + pr_cont("during a linefill from L2.\n"); + else if (ll == 0x1) { + switch (r4) { + case R4_IRD: + pr_cont("Parity error during data load.\n"); + break; + + case R4_EVICT: + pr_cont("Copyback Parity/Victim error.\n"); + break; + + case R4_SNOOP: + pr_cont("Tag Snoop error.\n"); + break; + + default: + ret = false; + break; + } + } else + ret = false; + + return ret; +} + +static bool f14h_ic_mce(u16 ec) +{ + u8 ll = ec & 0x3; + u8 tt = (ec >> 2) & 0x3; + u8 r4 = (ec >> 4) & 0xf; + bool ret = true; + + if (MEM_ERROR(ec)) { + if (tt != 0 || ll != 1) + ret = false; + + if (r4 == R4_IRD) + pr_cont("Data/tag array parity error for a tag hit.\n"); + else if (r4 == R4_SNOOP) + pr_cont("Tag error during snoop/victimization.\n"); + else + ret = false; + } + return ret; +} + +static void amd_decode_ic_mce(struct mce *m) +{ + u16 ec = m->status & 0xffff; + u8 xec = (m->status >> 16) & 0xf; + + pr_emerg(HW_ERR "Instruction Cache Error: "); + + if (TLB_ERROR(ec)) + pr_cont("%s TLB %s.\n", LL_MSG(ec), + (xec ? "multimatch" : "parity error")); + else if (BUS_ERROR(ec)) { + bool k8 = (boot_cpu_data.x86 == 0xf && (m->status & BIT_64(58))); + + pr_cont("during %s.\n", (k8 ? "system linefill" : "NB data read")); + } else if (fam_ops->ic_mce(ec)) + ; + else + pr_emerg(HW_ERR "Corrupted IC MCE info?\n"); +} + +static void amd_decode_bu_mce(struct mce *m) +{ + u32 ec = m->status & 0xffff; + u32 xec = (m->status >> 16) & 0xf; + + pr_emerg(HW_ERR "Bus Unit Error"); + + if (xec == 0x1) + pr_cont(" in the write data buffers.\n"); + else if (xec == 0x3) + pr_cont(" in the victim data buffers.\n"); + else if (xec == 0x2 && MEM_ERROR(ec)) + pr_cont(": %s error in the L2 cache tags.\n", RRRR_MSG(ec)); + else if (xec == 0x0) { + if (TLB_ERROR(ec)) + pr_cont(": %s error in a Page Descriptor Cache or " + "Guest TLB.\n", TT_MSG(ec)); + else if (BUS_ERROR(ec)) + pr_cont(": %s/ECC error in data read from NB: %s.\n", + RRRR_MSG(ec), PP_MSG(ec)); + else if (MEM_ERROR(ec)) { + u8 rrrr = (ec >> 4) & 0xf; + + if (rrrr >= 0x7) + pr_cont(": %s error during data copyback.\n", + RRRR_MSG(ec)); + else if (rrrr <= 0x1) + pr_cont(": %s parity/ECC error during data " + "access from L2.\n", RRRR_MSG(ec)); + else + goto wrong_bu_mce; + } else + goto wrong_bu_mce; + } else + goto wrong_bu_mce; + + return; + +wrong_bu_mce: + pr_emerg(HW_ERR "Corrupted BU MCE info?\n"); +} + +static void amd_decode_ls_mce(struct mce *m) +{ + u16 ec = m->status & 0xffff; + u8 xec = (m->status >> 16) & 0xf; + + if (boot_cpu_data.x86 == 0x14) { + pr_emerg("You shouldn't be seeing an LS MCE on this cpu family," + " please report on LKML.\n"); + return; + } + + pr_emerg(HW_ERR "Load Store Error"); + + if (xec == 0x0) { + u8 r4 = (ec >> 4) & 0xf; + + if (!BUS_ERROR(ec) || (r4 != R4_DRD && r4 != R4_DWR)) + goto wrong_ls_mce; + + pr_cont(" during %s.\n", RRRR_MSG(ec)); + } else + goto wrong_ls_mce; + + return; + +wrong_ls_mce: + pr_emerg(HW_ERR "Corrupted LS MCE info?\n"); +} + +static bool k8_nb_mce(u16 ec, u8 xec) +{ + bool ret = true; + + switch (xec) { + case 0x1: + pr_cont("CRC error detected on HT link.\n"); + break; + + case 0x5: + pr_cont("Invalid GART PTE entry during GART table walk.\n"); + break; + + case 0x6: + pr_cont("Unsupported atomic RMW received from an IO link.\n"); + break; + + case 0x0: + case 0x8: + if (boot_cpu_data.x86 == 0x11) + return false; + + pr_cont("DRAM ECC error detected on the NB.\n"); + break; + + case 0xd: + pr_cont("Parity error on the DRAM addr/ctl signals.\n"); + break; + + default: + ret = false; + break; + } + + return ret; +} + +static bool f10h_nb_mce(u16 ec, u8 xec) +{ + bool ret = true; + u8 offset = 0; + + if (k8_nb_mce(ec, xec)) + return true; + + switch(xec) { + case 0xa ... 0xc: + offset = 10; + break; + + case 0xe: + offset = 11; + break; + + case 0xf: + if (TLB_ERROR(ec)) + pr_cont("GART Table Walk data error.\n"); + else if (BUS_ERROR(ec)) + pr_cont("DMA Exclusion Vector Table Walk error.\n"); + else + ret = false; + + goto out; + break; + + case 0x1c ... 0x1f: + offset = 24; + break; + + default: + ret = false; + + goto out; + break; + } + + pr_cont("%s.\n", f10h_nb_mce_desc[xec - offset]); + +out: + return ret; +} + +static bool nb_noop_mce(u16 ec, u8 xec) +{ + return false; +} + +void amd_decode_nb_mce(int node_id, struct mce *m, u32 nbcfg) +{ + u8 xec = (m->status >> 16) & 0x1f; + u16 ec = m->status & 0xffff; + u32 nbsh = (u32)(m->status >> 32); + + pr_emerg(HW_ERR "Northbridge Error, node %d: ", node_id); + + /* + * F10h, revD can disable ErrCpu[3:0] so check that first and also the + * value encoding has changed so interpret those differently + */ + if ((boot_cpu_data.x86 == 0x10) && + (boot_cpu_data.x86_model > 7)) { + if (nbsh & K8_NBSH_ERR_CPU_VAL) + pr_cont(", core: %u", (u8)(nbsh & nb_err_cpumask)); + } else { + u8 assoc_cpus = nbsh & nb_err_cpumask; + + if (assoc_cpus > 0) + pr_cont(", core: %d", fls(assoc_cpus) - 1); + } + + switch (xec) { + case 0x2: + pr_cont("Sync error (sync packets on HT link detected).\n"); + return; + + case 0x3: + pr_cont("HT Master abort.\n"); + return; + + case 0x4: + pr_cont("HT Target abort.\n"); + return; + + case 0x7: + pr_cont("NB Watchdog timeout.\n"); + return; + + case 0x9: + pr_cont("SVM DMA Exclusion Vector error.\n"); + return; + + default: + break; + } + + if (!fam_ops->nb_mce(ec, xec)) + goto wrong_nb_mce; + + if (boot_cpu_data.x86 == 0xf || boot_cpu_data.x86 == 0x10) + if ((xec == 0x8 || xec == 0x0) && nb_bus_decoder) + nb_bus_decoder(node_id, m, nbcfg); + + return; + +wrong_nb_mce: + pr_emerg(HW_ERR "Corrupted NB MCE info?\n"); +} +EXPORT_SYMBOL_GPL(amd_decode_nb_mce); + +static void amd_decode_fr_mce(struct mce *m) +{ + if (boot_cpu_data.x86 == 0xf || + boot_cpu_data.x86 == 0x11) + goto wrong_fr_mce; + + /* we have only one error signature so match all fields at once. */ + if ((m->status & 0xffff) == 0x0f0f) { + pr_emerg(HW_ERR "FR Error: CPU Watchdog timer expire.\n"); + return; + } + +wrong_fr_mce: + pr_emerg(HW_ERR "Corrupted FR MCE info?\n"); +} + +static inline void amd_decode_err_code(u16 ec) +{ + if (TLB_ERROR(ec)) { + pr_emerg(HW_ERR "Transaction: %s, Cache Level: %s\n", + TT_MSG(ec), LL_MSG(ec)); + } else if (MEM_ERROR(ec)) { + pr_emerg(HW_ERR "Transaction: %s, Type: %s, Cache Level: %s\n", + RRRR_MSG(ec), TT_MSG(ec), LL_MSG(ec)); + } else if (BUS_ERROR(ec)) { + pr_emerg(HW_ERR "Transaction: %s (%s), %s, Cache Level: %s, " + "Participating Processor: %s\n", + RRRR_MSG(ec), II_MSG(ec), TO_MSG(ec), LL_MSG(ec), + PP_MSG(ec)); + } else + pr_emerg(HW_ERR "Huh? Unknown MCE error 0x%x\n", ec); +} + +/* + * Filter out unwanted MCE signatures here. + */ +static bool amd_filter_mce(struct mce *m) +{ + u8 xec = (m->status >> 16) & 0x1f; + + /* + * NB GART TLB error reporting is disabled by default. + */ + if (m->bank == 4 && xec == 0x5 && !report_gart_errors) + return true; + + return false; +} + +int amd_decode_mce(struct notifier_block *nb, unsigned long val, void *data) +{ + struct mce *m = (struct mce *)data; + int node, ecc; + + if (amd_filter_mce(m)) + return NOTIFY_STOP; + + pr_emerg(HW_ERR "MC%d_STATUS: ", m->bank); + + pr_cont("%sorrected error, other errors lost: %s, " + "CPU context corrupt: %s", + ((m->status & MCI_STATUS_UC) ? "Unc" : "C"), + ((m->status & MCI_STATUS_OVER) ? "yes" : "no"), + ((m->status & MCI_STATUS_PCC) ? "yes" : "no")); + + /* do the two bits[14:13] together */ + ecc = (m->status >> 45) & 0x3; + if (ecc) + pr_cont(", %sECC Error", ((ecc == 2) ? "C" : "U")); + + pr_cont("\n"); + + switch (m->bank) { + case 0: + amd_decode_dc_mce(m); + break; + + case 1: + amd_decode_ic_mce(m); + break; + + case 2: + amd_decode_bu_mce(m); + break; + + case 3: + amd_decode_ls_mce(m); + break; + + case 4: + node = amd_get_nb_id(m->extcpu); + amd_decode_nb_mce(node, m, 0); + break; + + case 5: + amd_decode_fr_mce(m); + break; + + default: + break; + } + + amd_decode_err_code(m->status & 0xffff); + + return NOTIFY_STOP; +} +EXPORT_SYMBOL_GPL(amd_decode_mce); + +static struct notifier_block amd_mce_dec_nb = { + .notifier_call = amd_decode_mce, +}; + +static int __init mce_amd_init(void) +{ + if (boot_cpu_data.x86_vendor != X86_VENDOR_AMD) + return 0; + + if ((boot_cpu_data.x86 < 0xf || boot_cpu_data.x86 > 0x12) && + (boot_cpu_data.x86 != 0x14 || boot_cpu_data.x86_model > 0xf)) + return 0; + + fam_ops = kzalloc(sizeof(struct amd_decoder_ops), GFP_KERNEL); + if (!fam_ops) + return -ENOMEM; + + switch (boot_cpu_data.x86) { + case 0xf: + fam_ops->dc_mce = k8_dc_mce; + fam_ops->ic_mce = k8_ic_mce; + fam_ops->nb_mce = k8_nb_mce; + break; + + case 0x10: + fam_ops->dc_mce = f10h_dc_mce; + fam_ops->ic_mce = k8_ic_mce; + fam_ops->nb_mce = f10h_nb_mce; + break; + + case 0x11: + fam_ops->dc_mce = k8_dc_mce; + fam_ops->ic_mce = k8_ic_mce; + fam_ops->nb_mce = f10h_nb_mce; + break; + + case 0x12: + fam_ops->dc_mce = f12h_dc_mce; + fam_ops->ic_mce = k8_ic_mce; + fam_ops->nb_mce = nb_noop_mce; + break; + + case 0x14: + nb_err_cpumask = 0x3; + fam_ops->dc_mce = f14h_dc_mce; + fam_ops->ic_mce = f14h_ic_mce; + fam_ops->nb_mce = nb_noop_mce; + break; + + default: + printk(KERN_WARNING "Huh? What family is that: %d?!\n", + boot_cpu_data.x86); + kfree(fam_ops); + return -EINVAL; + } + + pr_info("MCE: In-kernel MCE decoding enabled.\n"); + + atomic_notifier_chain_register(&x86_mce_decoder_chain, &amd_mce_dec_nb); + + return 0; +} +early_initcall(mce_amd_init); + +#ifdef MODULE +static void __exit mce_amd_exit(void) +{ + atomic_notifier_chain_unregister(&x86_mce_decoder_chain, &amd_mce_dec_nb); + kfree(fam_ops); +} + +MODULE_DESCRIPTION("AMD MCE decoder"); +MODULE_ALIAS("edac-mce-amd"); +MODULE_LICENSE("GPL"); +module_exit(mce_amd_exit); +#endif diff --git a/drivers/edac/edac_mce_amd.h b/drivers/edac/mce_amd.h index df23ee065f79..35f6e0e3b297 100644 --- a/drivers/edac/edac_mce_amd.h +++ b/drivers/edac/mce_amd.h @@ -1,11 +1,14 @@ #ifndef _EDAC_MCE_AMD_H #define _EDAC_MCE_AMD_H +#include <linux/notifier.h> + #include <asm/mce.h> +#define BIT_64(n) (U64_C(1) << (n)) + #define ERROR_CODE(x) ((x) & 0xffff) #define EXT_ERROR_CODE(x) (((x) >> 16) & 0x1f) -#define EXT_ERR_MSG(x) ext_msgs[EXT_ERROR_CODE(x)] #define LOW_SYNDROME(x) (((x) >> 15) & 0xff) #define HIGH_SYNDROME(x) (((x) >> 24) & 0xff) @@ -20,13 +23,14 @@ #define II_MSG(x) ii_msgs[II(x)] #define LL(x) (((x) >> 0) & 0x3) #define LL_MSG(x) ll_msgs[LL(x)] -#define RRRR(x) (((x) >> 4) & 0xf) -#define RRRR_MSG(x) rrrr_msgs[RRRR(x)] #define TO(x) (((x) >> 8) & 0x1) #define TO_MSG(x) to_msgs[TO(x)] #define PP(x) (((x) >> 9) & 0x3) #define PP_MSG(x) pp_msgs[PP(x)] +#define RRRR(x) (((x) >> 4) & 0xf) +#define RRRR_MSG(x) ((RRRR(x) < 9) ? rrrr_msgs[RRRR(x)] : "Wrong R4!") + #define K8_NBSH 0x4C #define K8_NBSH_VALID_BIT BIT(31) @@ -41,13 +45,45 @@ #define K8_NBSH_UECC BIT(13) #define K8_NBSH_ERR_SCRUBER BIT(8) +enum tt_ids { + TT_INSTR = 0, + TT_DATA, + TT_GEN, + TT_RESV, +}; + +enum ll_ids { + LL_RESV = 0, + LL_L1, + LL_L2, + LL_LG, +}; + +enum ii_ids { + II_MEM = 0, + II_RESV, + II_IO, + II_GEN, +}; + +enum rrrr_ids { + R4_GEN = 0, + R4_RD, + R4_WR, + R4_DRD, + R4_DWR, + R4_IRD, + R4_PREF, + R4_EVICT, + R4_SNOOP, +}; + extern const char *tt_msgs[]; extern const char *ll_msgs[]; extern const char *rrrr_msgs[]; extern const char *pp_msgs[]; extern const char *to_msgs[]; extern const char *ii_msgs[]; -extern const char *ext_msgs[]; /* * relevant NB regs @@ -60,10 +96,19 @@ struct err_regs { u32 nbeal; }; +/* + * per-family decoder ops + */ +struct amd_decoder_ops { + bool (*dc_mce)(u16); + bool (*ic_mce)(u16); + bool (*nb_mce)(u16, u8); +}; void amd_report_gart_errors(bool); -void amd_register_ecc_decoder(void (*f)(int, struct err_regs *)); -void amd_unregister_ecc_decoder(void (*f)(int, struct err_regs *)); -void amd_decode_nb_mce(int, struct err_regs *, int); +void amd_register_ecc_decoder(void (*f)(int, struct mce *, u32)); +void amd_unregister_ecc_decoder(void (*f)(int, struct mce *, u32)); +void amd_decode_nb_mce(int, struct mce *, u32); +int amd_decode_mce(struct notifier_block *nb, unsigned long val, void *data); #endif /* _EDAC_MCE_AMD_H */ diff --git a/drivers/edac/mce_amd_inj.c b/drivers/edac/mce_amd_inj.c new file mode 100644 index 000000000000..8d0688f36d4c --- /dev/null +++ b/drivers/edac/mce_amd_inj.c @@ -0,0 +1,171 @@ +/* + * A simple MCE injection facility for testing the MCE decoding code. This + * driver should be built as module so that it can be loaded on production + * kernels for testing purposes. + * + * This file may be distributed under the terms of the GNU General Public + * License version 2. + * + * Copyright (c) 2010: Borislav Petkov <borislav.petkov@amd.com> + * Advanced Micro Devices Inc. + */ + +#include <linux/kobject.h> +#include <linux/sysdev.h> +#include <linux/edac.h> +#include <asm/mce.h> + +#include "mce_amd.h" + +struct edac_mce_attr { + struct attribute attr; + ssize_t (*show) (struct kobject *kobj, struct edac_mce_attr *attr, char *buf); + ssize_t (*store)(struct kobject *kobj, struct edac_mce_attr *attr, + const char *buf, size_t count); +}; + +#define EDAC_MCE_ATTR(_name, _mode, _show, _store) \ +static struct edac_mce_attr mce_attr_##_name = __ATTR(_name, _mode, _show, _store) + +static struct kobject *mce_kobj; + +/* + * Collect all the MCi_XXX settings + */ +static struct mce i_mce; + +#define MCE_INJECT_STORE(reg) \ +static ssize_t edac_inject_##reg##_store(struct kobject *kobj, \ + struct edac_mce_attr *attr, \ + const char *data, size_t count)\ +{ \ + int ret = 0; \ + unsigned long value; \ + \ + ret = strict_strtoul(data, 16, &value); \ + if (ret < 0) \ + printk(KERN_ERR "Error writing MCE " #reg " field.\n"); \ + \ + i_mce.reg = value; \ + \ + return count; \ +} + +MCE_INJECT_STORE(status); +MCE_INJECT_STORE(misc); +MCE_INJECT_STORE(addr); + +#define MCE_INJECT_SHOW(reg) \ +static ssize_t edac_inject_##reg##_show(struct kobject *kobj, \ + struct edac_mce_attr *attr, \ + char *buf) \ +{ \ + return sprintf(buf, "0x%016llx\n", i_mce.reg); \ +} + +MCE_INJECT_SHOW(status); +MCE_INJECT_SHOW(misc); +MCE_INJECT_SHOW(addr); + +EDAC_MCE_ATTR(status, 0644, edac_inject_status_show, edac_inject_status_store); +EDAC_MCE_ATTR(misc, 0644, edac_inject_misc_show, edac_inject_misc_store); +EDAC_MCE_ATTR(addr, 0644, edac_inject_addr_show, edac_inject_addr_store); + +/* + * This denotes into which bank we're injecting and triggers + * the injection, at the same time. + */ +static ssize_t edac_inject_bank_store(struct kobject *kobj, + struct edac_mce_attr *attr, + const char *data, size_t count) +{ + int ret = 0; + unsigned long value; + + ret = strict_strtoul(data, 10, &value); + if (ret < 0) { + printk(KERN_ERR "Invalid bank value!\n"); + return -EINVAL; + } + + if (value > 5) { + printk(KERN_ERR "Non-existant MCE bank: %lu\n", value); + return -EINVAL; + } + + i_mce.bank = value; + + amd_decode_mce(NULL, 0, &i_mce); + + return count; +} + +static ssize_t edac_inject_bank_show(struct kobject *kobj, + struct edac_mce_attr *attr, char *buf) +{ + return sprintf(buf, "%d\n", i_mce.bank); +} + +EDAC_MCE_ATTR(bank, 0644, edac_inject_bank_show, edac_inject_bank_store); + +static struct edac_mce_attr *sysfs_attrs[] = { &mce_attr_status, &mce_attr_misc, + &mce_attr_addr, &mce_attr_bank +}; + +static int __init edac_init_mce_inject(void) +{ + struct sysdev_class *edac_class = NULL; + int i, err = 0; + + edac_class = edac_get_sysfs_class(); + if (!edac_class) + return -EINVAL; + + mce_kobj = kobject_create_and_add("mce", &edac_class->kset.kobj); + if (!mce_kobj) { + printk(KERN_ERR "Error creating a mce kset.\n"); + err = -ENOMEM; + goto err_mce_kobj; + } + + for (i = 0; i < ARRAY_SIZE(sysfs_attrs); i++) { + err = sysfs_create_file(mce_kobj, &sysfs_attrs[i]->attr); + if (err) { + printk(KERN_ERR "Error creating %s in sysfs.\n", + sysfs_attrs[i]->attr.name); + goto err_sysfs_create; + } + } + return 0; + +err_sysfs_create: + while (i-- >= 0) + sysfs_remove_file(mce_kobj, &sysfs_attrs[i]->attr); + + kobject_del(mce_kobj); + +err_mce_kobj: + edac_put_sysfs_class(); + + return err; +} + +static void __exit edac_exit_mce_inject(void) +{ + int i; + + for (i = 0; i < ARRAY_SIZE(sysfs_attrs); i++) + sysfs_remove_file(mce_kobj, &sysfs_attrs[i]->attr); + + kobject_del(mce_kobj); + + edac_put_sysfs_class(); +} + +module_init(edac_init_mce_inject); +module_exit(edac_exit_mce_inject); + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Borislav Petkov <borislav.petkov@amd.com>"); +MODULE_AUTHOR("AMD Inc."); +MODULE_DESCRIPTION("MCE injection facility for testing MCE decoding"); diff --git a/drivers/firewire/ohci.c b/drivers/firewire/ohci.c index 1b05896648bc..9dcb17d51aee 100644 --- a/drivers/firewire/ohci.c +++ b/drivers/firewire/ohci.c @@ -2840,7 +2840,7 @@ static int __devinit pci_probe(struct pci_dev *dev, const struct pci_device_id *ent) { struct fw_ohci *ohci; - u32 bus_options, max_receive, link_speed, version, link_enh; + u32 bus_options, max_receive, link_speed, version; u64 guid; int i, err, n_ir, n_it; size_t size; @@ -2894,23 +2894,6 @@ static int __devinit pci_probe(struct pci_dev *dev, if (param_quirks) ohci->quirks = param_quirks; - /* TI OHCI-Lynx and compatible: set recommended configuration bits. */ - if (dev->vendor == PCI_VENDOR_ID_TI) { - pci_read_config_dword(dev, PCI_CFG_TI_LinkEnh, &link_enh); - - /* adjust latency of ATx FIFO: use 1.7 KB threshold */ - link_enh &= ~TI_LinkEnh_atx_thresh_mask; - link_enh |= TI_LinkEnh_atx_thresh_1_7K; - - /* use priority arbitration for asynchronous responses */ - link_enh |= TI_LinkEnh_enab_unfair; - - /* required for aPhyEnhanceEnable to work */ - link_enh |= TI_LinkEnh_enab_accel; - - pci_write_config_dword(dev, PCI_CFG_TI_LinkEnh, link_enh); - } - ar_context_init(&ohci->ar_request_ctx, ohci, OHCI1394_AsReqRcvContextControlSet); diff --git a/drivers/firewire/ohci.h b/drivers/firewire/ohci.h index 0e6c5a466908..ef5e7336da68 100644 --- a/drivers/firewire/ohci.h +++ b/drivers/firewire/ohci.h @@ -155,12 +155,4 @@ #define OHCI1394_phy_tcode 0xe -/* TI extensions */ - -#define PCI_CFG_TI_LinkEnh 0xf4 -#define TI_LinkEnh_enab_accel 0x00000002 -#define TI_LinkEnh_enab_unfair 0x00000080 -#define TI_LinkEnh_atx_thresh_mask 0x00003000 -#define TI_LinkEnh_atx_thresh_1_7K 0x00001000 - #endif /* _FIREWIRE_OHCI_H */ diff --git a/drivers/firmware/Kconfig b/drivers/firmware/Kconfig index 280c9b5ad9e3..88a3ae6cd023 100644 --- a/drivers/firmware/Kconfig +++ b/drivers/firmware/Kconfig @@ -125,7 +125,7 @@ config ISCSI_IBFT_FIND config ISCSI_IBFT tristate "iSCSI Boot Firmware Table Attributes module" select ISCSI_BOOT_SYSFS - depends on ISCSI_IBFT_FIND && SCSI + depends on ISCSI_IBFT_FIND && SCSI && SCSI_LOWLEVEL default n help This option enables support for detection and exposing of iSCSI diff --git a/drivers/gpu/drm/radeon/radeon_cursor.c b/drivers/gpu/drm/radeon/radeon_cursor.c index 5731fc9b1ae3..3eef567b0421 100644 --- a/drivers/gpu/drm/radeon/radeon_cursor.c +++ b/drivers/gpu/drm/radeon/radeon_cursor.c @@ -203,6 +203,7 @@ int radeon_crtc_cursor_move(struct drm_crtc *crtc, struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc); struct radeon_device *rdev = crtc->dev->dev_private; int xorigin = 0, yorigin = 0; + int w = radeon_crtc->cursor_width; if (x < 0) xorigin = -x + 1; @@ -213,22 +214,7 @@ int radeon_crtc_cursor_move(struct drm_crtc *crtc, if (yorigin >= CURSOR_HEIGHT) yorigin = CURSOR_HEIGHT - 1; - radeon_lock_cursor(crtc, true); - if (ASIC_IS_DCE4(rdev)) { - /* cursors are offset into the total surface */ - x += crtc->x; - y += crtc->y; - DRM_DEBUG("x %d y %d c->x %d c->y %d\n", x, y, crtc->x, crtc->y); - - /* XXX: check if evergreen has the same issues as avivo chips */ - WREG32(EVERGREEN_CUR_POSITION + radeon_crtc->crtc_offset, - ((xorigin ? 0 : x) << 16) | - (yorigin ? 0 : y)); - WREG32(EVERGREEN_CUR_HOT_SPOT + radeon_crtc->crtc_offset, (xorigin << 16) | yorigin); - WREG32(EVERGREEN_CUR_SIZE + radeon_crtc->crtc_offset, - ((radeon_crtc->cursor_width - 1) << 16) | (radeon_crtc->cursor_height - 1)); - } else if (ASIC_IS_AVIVO(rdev)) { - int w = radeon_crtc->cursor_width; + if (ASIC_IS_AVIVO(rdev)) { int i = 0; struct drm_crtc *crtc_p; @@ -260,7 +246,17 @@ int radeon_crtc_cursor_move(struct drm_crtc *crtc, if (w <= 0) w = 1; } + } + radeon_lock_cursor(crtc, true); + if (ASIC_IS_DCE4(rdev)) { + WREG32(EVERGREEN_CUR_POSITION + radeon_crtc->crtc_offset, + ((xorigin ? 0 : x) << 16) | + (yorigin ? 0 : y)); + WREG32(EVERGREEN_CUR_HOT_SPOT + radeon_crtc->crtc_offset, (xorigin << 16) | yorigin); + WREG32(EVERGREEN_CUR_SIZE + radeon_crtc->crtc_offset, + ((w - 1) << 16) | (radeon_crtc->cursor_height - 1)); + } else if (ASIC_IS_AVIVO(rdev)) { WREG32(AVIVO_D1CUR_POSITION + radeon_crtc->crtc_offset, ((xorigin ? 0 : x) << 16) | (yorigin ? 0 : y)); diff --git a/drivers/hid/hid-cando.c b/drivers/hid/hid-cando.c index 4267a6fdc277..5925bdcd417d 100644 --- a/drivers/hid/hid-cando.c +++ b/drivers/hid/hid-cando.c @@ -237,6 +237,8 @@ static const struct hid_device_id cando_devices[] = { USB_DEVICE_ID_CANDO_MULTI_TOUCH) }, { HID_USB_DEVICE(USB_VENDOR_ID_CANDO, USB_DEVICE_ID_CANDO_MULTI_TOUCH_11_6) }, + { HID_USB_DEVICE(USB_VENDOR_ID_CANDO, + USB_DEVICE_ID_CANDO_MULTI_TOUCH_15_6) }, { } }; MODULE_DEVICE_TABLE(hid, cando_devices); diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c index 3f7292486024..a0dea3d1296e 100644 --- a/drivers/hid/hid-core.c +++ b/drivers/hid/hid-core.c @@ -1292,6 +1292,7 @@ static const struct hid_device_id hid_blacklist[] = { { HID_USB_DEVICE(USB_VENDOR_ID_BTC, USB_DEVICE_ID_BTC_EMPREX_REMOTE_2) }, { HID_USB_DEVICE(USB_VENDOR_ID_CANDO, USB_DEVICE_ID_CANDO_MULTI_TOUCH) }, { HID_USB_DEVICE(USB_VENDOR_ID_CANDO, USB_DEVICE_ID_CANDO_MULTI_TOUCH_11_6) }, + { HID_USB_DEVICE(USB_VENDOR_ID_CANDO, USB_DEVICE_ID_CANDO_MULTI_TOUCH_15_6) }, { HID_USB_DEVICE(USB_VENDOR_ID_CHERRY, USB_DEVICE_ID_CHERRY_CYMOTION) }, { HID_USB_DEVICE(USB_VENDOR_ID_CHERRY, USB_DEVICE_ID_CHERRY_CYMOTION_SOLAR) }, { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_TACTICAL_PAD) }, diff --git a/drivers/hid/hid-ids.h b/drivers/hid/hid-ids.h index 765a4f53eb5c..c5ae5f1545bd 100644 --- a/drivers/hid/hid-ids.h +++ b/drivers/hid/hid-ids.h @@ -134,6 +134,7 @@ #define USB_VENDOR_ID_CANDO 0x2087 #define USB_DEVICE_ID_CANDO_MULTI_TOUCH 0x0a01 #define USB_DEVICE_ID_CANDO_MULTI_TOUCH_11_6 0x0b03 +#define USB_DEVICE_ID_CANDO_MULTI_TOUCH_15_6 0x0f01 #define USB_VENDOR_ID_CH 0x068e #define USB_DEVICE_ID_CH_PRO_PEDALS 0x00f2 @@ -503,6 +504,7 @@ #define USB_VENDOR_ID_TURBOX 0x062a #define USB_DEVICE_ID_TURBOX_KEYBOARD 0x0201 +#define USB_DEVICE_ID_TURBOX_TOUCHSCREEN_MOSART 0x7100 #define USB_VENDOR_ID_TWINHAN 0x6253 #define USB_DEVICE_ID_TWINHAN_IR_REMOTE 0x0100 diff --git a/drivers/hid/hidraw.c b/drivers/hid/hidraw.c index 47d70c523d93..a3866b5c0c43 100644 --- a/drivers/hid/hidraw.c +++ b/drivers/hid/hidraw.c @@ -109,6 +109,12 @@ static ssize_t hidraw_write(struct file *file, const char __user *buffer, size_t int ret = 0; mutex_lock(&minors_lock); + + if (!hidraw_table[minor]) { + ret = -ENODEV; + goto out; + } + dev = hidraw_table[minor]->hid; if (!dev->hid_output_raw_report) { @@ -244,6 +250,10 @@ static long hidraw_ioctl(struct file *file, unsigned int cmd, mutex_lock(&minors_lock); dev = hidraw_table[minor]; + if (!dev) { + ret = -ENODEV; + goto out; + } switch (cmd) { case HIDIOCGRDESCSIZE: @@ -317,6 +327,7 @@ static long hidraw_ioctl(struct file *file, unsigned int cmd, ret = -ENOTTY; } +out: mutex_unlock(&minors_lock); return ret; } diff --git a/drivers/hid/usbhid/hid-quirks.c b/drivers/hid/usbhid/hid-quirks.c index 70da3181c8a0..f0260c699adb 100644 --- a/drivers/hid/usbhid/hid-quirks.c +++ b/drivers/hid/usbhid/hid-quirks.c @@ -36,6 +36,7 @@ static const struct hid_blacklist { { USB_VENDOR_ID_DWAV, USB_DEVICE_ID_EGALAX_TOUCHCONTROLLER, HID_QUIRK_MULTI_INPUT | HID_QUIRK_NOGET }, { USB_VENDOR_ID_DWAV, USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH, HID_QUIRK_MULTI_INPUT }, { USB_VENDOR_ID_MOJO, USB_DEVICE_ID_RETRO_ADAPTER, HID_QUIRK_MULTI_INPUT }, + { USB_VENDOR_ID_TURBOX, USB_DEVICE_ID_TURBOX_TOUCHSCREEN_MOSART, HID_QUIRK_MULTI_INPUT }, { USB_VENDOR_ID_HAPP, USB_DEVICE_ID_UGCI_DRIVING, HID_QUIRK_BADPAD | HID_QUIRK_MULTI_INPUT }, { USB_VENDOR_ID_HAPP, USB_DEVICE_ID_UGCI_FLYING, HID_QUIRK_BADPAD | HID_QUIRK_MULTI_INPUT }, { USB_VENDOR_ID_HAPP, USB_DEVICE_ID_UGCI_FIGHTING, HID_QUIRK_BADPAD | HID_QUIRK_MULTI_INPUT }, diff --git a/drivers/i2c/busses/i2c-davinci.c b/drivers/i2c/busses/i2c-davinci.c index b8feac5f2ef4..5795c8398c7c 100644 --- a/drivers/i2c/busses/i2c-davinci.c +++ b/drivers/i2c/busses/i2c-davinci.c @@ -331,21 +331,16 @@ i2c_davinci_xfer_msg(struct i2c_adapter *adap, struct i2c_msg *msg, int stop) INIT_COMPLETION(dev->cmd_complete); dev->cmd_err = 0; - /* Take I2C out of reset, configure it as master and set the - * start bit */ - flag = DAVINCI_I2C_MDR_IRS | DAVINCI_I2C_MDR_MST | DAVINCI_I2C_MDR_STT; + /* Take I2C out of reset and configure it as master */ + flag = DAVINCI_I2C_MDR_IRS | DAVINCI_I2C_MDR_MST; /* if the slave address is ten bit address, enable XA bit */ if (msg->flags & I2C_M_TEN) flag |= DAVINCI_I2C_MDR_XA; if (!(msg->flags & I2C_M_RD)) flag |= DAVINCI_I2C_MDR_TRX; - if (stop) - flag |= DAVINCI_I2C_MDR_STP; - if (msg->len == 0) { + if (msg->len == 0) flag |= DAVINCI_I2C_MDR_RM; - flag &= ~DAVINCI_I2C_MDR_STP; - } /* Enable receive or transmit interrupts */ w = davinci_i2c_read_reg(dev, DAVINCI_I2C_IMR_REG); @@ -358,17 +353,28 @@ i2c_davinci_xfer_msg(struct i2c_adapter *adap, struct i2c_msg *msg, int stop) dev->terminate = 0; /* + * Write mode register first as needed for correct behaviour + * on OMAP-L138, but don't set STT yet to avoid a race with XRDY + * occuring before we have loaded DXR + */ + davinci_i2c_write_reg(dev, DAVINCI_I2C_MDR_REG, flag); + + /* * First byte should be set here, not after interrupt, * because transmit-data-ready interrupt can come before * NACK-interrupt during sending of previous message and * ICDXR may have wrong data + * It also saves us one interrupt, slightly faster */ if ((!(msg->flags & I2C_M_RD)) && dev->buf_len) { davinci_i2c_write_reg(dev, DAVINCI_I2C_DXR_REG, *dev->buf++); dev->buf_len--; } - /* write the data into mode register; start transmitting */ + /* Set STT to begin transmit now DXR is loaded */ + flag |= DAVINCI_I2C_MDR_STT; + if (stop && msg->len != 0) + flag |= DAVINCI_I2C_MDR_STP; davinci_i2c_write_reg(dev, DAVINCI_I2C_MDR_REG, flag); r = wait_for_completion_interruptible_timeout(&dev->cmd_complete, diff --git a/drivers/i2c/busses/i2c-imx.c b/drivers/i2c/busses/i2c-imx.c index d1ff9408dc1f..4c2a62b75b5c 100644 --- a/drivers/i2c/busses/i2c-imx.c +++ b/drivers/i2c/busses/i2c-imx.c @@ -159,15 +159,9 @@ static int i2c_imx_bus_busy(struct imx_i2c_struct *i2c_imx, int for_busy) static int i2c_imx_trx_complete(struct imx_i2c_struct *i2c_imx) { - int result; - - result = wait_event_interruptible_timeout(i2c_imx->queue, - i2c_imx->i2csr & I2SR_IIF, HZ / 10); + wait_event_timeout(i2c_imx->queue, i2c_imx->i2csr & I2SR_IIF, HZ / 10); - if (unlikely(result < 0)) { - dev_dbg(&i2c_imx->adapter.dev, "<%s> result < 0\n", __func__); - return result; - } else if (unlikely(!(i2c_imx->i2csr & I2SR_IIF))) { + if (unlikely(!(i2c_imx->i2csr & I2SR_IIF))) { dev_dbg(&i2c_imx->adapter.dev, "<%s> Timeout\n", __func__); return -ETIMEDOUT; } @@ -295,7 +289,7 @@ static irqreturn_t i2c_imx_isr(int irq, void *dev_id) i2c_imx->i2csr = temp; temp &= ~I2SR_IIF; writeb(temp, i2c_imx->base + IMX_I2C_I2SR); - wake_up_interruptible(&i2c_imx->queue); + wake_up(&i2c_imx->queue); return IRQ_HANDLED; } diff --git a/drivers/ide/ide-cs.c b/drivers/ide/ide-cs.c index 2a4cb9c18f01..404843e8611b 100644 --- a/drivers/ide/ide-cs.c +++ b/drivers/ide/ide-cs.c @@ -43,7 +43,6 @@ #include <asm/io.h> #include <asm/system.h> -#include <pcmcia/cs.h> #include <pcmcia/cistpl.h> #include <pcmcia/ds.h> #include <pcmcia/cisreg.h> @@ -72,17 +71,6 @@ static int ide_config(struct pcmcia_device *); static void ide_detach(struct pcmcia_device *p_dev); - - - -/*====================================================================== - - ide_attach() creates an "instance" of the driver, allocating - local data structures for one device. The device is registered - with Card Services. - -======================================================================*/ - static int ide_probe(struct pcmcia_device *link) { ide_info_t *info; @@ -97,23 +85,12 @@ static int ide_probe(struct pcmcia_device *link) info->p_dev = link; link->priv = info; - link->resource[0]->flags |= IO_DATA_PATH_WIDTH_AUTO; - link->resource[1]->flags |= IO_DATA_PATH_WIDTH_8; - link->conf.Attributes = CONF_ENABLE_IRQ; - link->conf.IntType = INT_MEMORY_AND_IO; + link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_IO | + CONF_AUTO_SET_VPP | CONF_AUTO_CHECK_VCC; return ide_config(link); } /* ide_attach */ -/*====================================================================== - - This deletes a driver "instance". The device is de-registered - with Card Services. If it has been released, all local data - structures are freed. Otherwise, the structures will be freed - when the device is released. - -======================================================================*/ - static void ide_detach(struct pcmcia_device *link) { ide_info_t *info = link->priv; @@ -187,79 +164,31 @@ out_release: return NULL; } -/*====================================================================== - - ide_config() is scheduled to run after a CARD_INSERTION event - is received, to configure the PCMCIA socket, and to make the - ide device available to the system. - -======================================================================*/ - -struct pcmcia_config_check { - unsigned long ctl_base; - int skip_vcc; - int is_kme; -}; - -static int pcmcia_check_one_config(struct pcmcia_device *pdev, - cistpl_cftable_entry_t *cfg, - cistpl_cftable_entry_t *dflt, - unsigned int vcc, - void *priv_data) +static int pcmcia_check_one_config(struct pcmcia_device *pdev, void *priv_data) { - struct pcmcia_config_check *stk = priv_data; - - /* Check for matching Vcc, unless we're desperate */ - if (!stk->skip_vcc) { - if (cfg->vcc.present & (1 << CISTPL_POWER_VNOM)) { - if (vcc != cfg->vcc.param[CISTPL_POWER_VNOM] / 10000) - return -ENODEV; - } else if (dflt->vcc.present & (1 << CISTPL_POWER_VNOM)) { - if (vcc != dflt->vcc.param[CISTPL_POWER_VNOM] / 10000) - return -ENODEV; - } - } + int *is_kme = priv_data; - if (cfg->vpp1.present & (1 << CISTPL_POWER_VNOM)) - pdev->conf.Vpp = cfg->vpp1.param[CISTPL_POWER_VNOM] / 10000; - else if (dflt->vpp1.present & (1 << CISTPL_POWER_VNOM)) - pdev->conf.Vpp = dflt->vpp1.param[CISTPL_POWER_VNOM] / 10000; - - if ((cfg->io.nwin > 0) || (dflt->io.nwin > 0)) { - cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &dflt->io; - pdev->io_lines = io->flags & CISTPL_IO_LINES_MASK; - - pdev->conf.ConfigIndex = cfg->index; - pdev->resource[0]->start = io->win[0].base; - if (!(io->flags & CISTPL_IO_16BIT)) { - pdev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH; - pdev->resource[0]->flags |= IO_DATA_PATH_WIDTH_8; - } - if (io->nwin == 2) { - pdev->resource[0]->end = 8; - pdev->resource[1]->start = io->win[1].base; - pdev->resource[1]->end = (stk->is_kme) ? 2 : 1; - if (pcmcia_request_io(pdev) != 0) - return -ENODEV; - stk->ctl_base = pdev->resource[1]->start; - } else if ((io->nwin == 1) && (io->win[0].len >= 16)) { - pdev->resource[0]->end = io->win[0].len; - pdev->resource[1]->end = 0; - if (pcmcia_request_io(pdev) != 0) - return -ENODEV; - stk->ctl_base = pdev->resource[0]->start + 0x0e; - } else + if (!(pdev->resource[0]->flags & IO_DATA_PATH_WIDTH_8)) { + pdev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH; + pdev->resource[0]->flags |= IO_DATA_PATH_WIDTH_AUTO; + } + pdev->resource[1]->flags &= ~IO_DATA_PATH_WIDTH; + pdev->resource[1]->flags |= IO_DATA_PATH_WIDTH_8; + + if (pdev->resource[1]->end) { + pdev->resource[0]->end = 8; + pdev->resource[1]->end = (*is_kme) ? 2 : 1; + } else { + if (pdev->resource[0]->end < 16) return -ENODEV; - /* If we've got this far, we're done */ - return 0; } - return -ENODEV; + + return pcmcia_request_io(pdev); } static int ide_config(struct pcmcia_device *link) { ide_info_t *info = link->priv; - struct pcmcia_config_check *stk = NULL; int ret = 0, is_kme = 0; unsigned long io_base, ctl_base; struct ide_host *host; @@ -270,23 +199,21 @@ static int ide_config(struct pcmcia_device *link) ((link->card_id == PRODID_KME_KXLC005_A) || (link->card_id == PRODID_KME_KXLC005_B))); - stk = kzalloc(sizeof(*stk), GFP_KERNEL); - if (!stk) - goto err_mem; - stk->is_kme = is_kme; - stk->skip_vcc = io_base = ctl_base = 0; - - if (pcmcia_loop_config(link, pcmcia_check_one_config, stk)) { - stk->skip_vcc = 1; - if (pcmcia_loop_config(link, pcmcia_check_one_config, stk)) + if (pcmcia_loop_config(link, pcmcia_check_one_config, &is_kme)) { + link->config_flags &= ~CONF_AUTO_CHECK_VCC; + if (pcmcia_loop_config(link, pcmcia_check_one_config, &is_kme)) goto failed; /* No suitable config found */ } io_base = link->resource[0]->start; - ctl_base = stk->ctl_base; + if (link->resource[1]->end) + ctl_base = link->resource[1]->start; + else + ctl_base = link->resource[0]->start + 0x0e; if (!link->irq) goto failed; - ret = pcmcia_request_configuration(link, &link->conf); + + ret = pcmcia_enable_device(link); if (ret) goto failed; @@ -311,29 +238,15 @@ static int ide_config(struct pcmcia_device *link) info->host = host; dev_info(&link->dev, "ide-cs: hd%c: Vpp = %d.%d\n", 'a' + host->ports[0]->index * 2, - link->conf.Vpp / 10, link->conf.Vpp % 10); + link->vpp / 10, link->vpp % 10); - kfree(stk); return 0; -err_mem: - printk(KERN_NOTICE "ide-cs: ide_config failed memory allocation\n"); - goto failed; - failed: - kfree(stk); ide_release(link); return -ENODEV; } /* ide_config */ -/*====================================================================== - - After a card is removed, ide_release() will unregister the net - device, and release the PCMCIA configuration. If the device is - still open, this will be postponed until it is closed. - -======================================================================*/ - static void ide_release(struct pcmcia_device *link) { ide_info_t *info = link->priv; @@ -359,15 +272,6 @@ static void ide_release(struct pcmcia_device *link) } /* ide_release */ -/*====================================================================== - - The card status event handler. Mostly, this schedules other - stuff to run after an event is received. A CARD_REMOVAL event - also sets some flags to discourage the ide drivers from - talking to the ports. - -======================================================================*/ - static struct pcmcia_device_id ide_ids[] = { PCMCIA_DEVICE_FUNC_ID(4), PCMCIA_DEVICE_MANF_CARD(0x0000, 0x0000), /* Corsair */ @@ -440,9 +344,7 @@ MODULE_DEVICE_TABLE(pcmcia, ide_ids); static struct pcmcia_driver ide_cs_driver = { .owner = THIS_MODULE, - .drv = { - .name = "ide-cs", - }, + .name = "ide-cs", .probe = ide_probe, .remove = ide_detach, .id_table = ide_ids, diff --git a/drivers/idle/intel_idle.c b/drivers/idle/intel_idle.c index c37ef64d1465..cb3ccf3ed221 100644 --- a/drivers/idle/intel_idle.c +++ b/drivers/idle/intel_idle.c @@ -59,18 +59,11 @@ #include <linux/hrtimer.h> /* ktime_get_real() */ #include <trace/events/power.h> #include <linux/sched.h> +#include <asm/mwait.h> #define INTEL_IDLE_VERSION "0.4" #define PREFIX "intel_idle: " -#define MWAIT_SUBSTATE_MASK (0xf) -#define MWAIT_CSTATE_MASK (0xf) -#define MWAIT_SUBSTATE_SIZE (4) -#define MWAIT_MAX_NUM_CSTATES 8 -#define CPUID_MWAIT_LEAF (5) -#define CPUID5_ECX_EXTENSIONS_SUPPORTED (0x1) -#define CPUID5_ECX_INTERRUPT_BREAK (0x2) - static struct cpuidle_driver intel_idle_driver = { .name = "intel_idle", .owner = THIS_MODULE, diff --git a/drivers/input/evdev.c b/drivers/input/evdev.c index c908c5f83645..af9ee313c10b 100644 --- a/drivers/input/evdev.c +++ b/drivers/input/evdev.c @@ -28,7 +28,7 @@ struct evdev { int minor; struct input_handle handle; wait_queue_head_t wait; - struct evdev_client *grab; + struct evdev_client __rcu *grab; struct list_head client_list; spinlock_t client_lock; /* protects client_list */ struct mutex mutex; @@ -669,6 +669,9 @@ static long evdev_do_ioctl(struct file *file, unsigned int cmd, if ((_IOC_NR(cmd) & ~ABS_MAX) == _IOC_NR(EVIOCGABS(0))) { + if (!dev->absinfo) + return -EINVAL; + t = _IOC_NR(cmd) & ABS_MAX; abs = dev->absinfo[t]; @@ -680,10 +683,13 @@ static long evdev_do_ioctl(struct file *file, unsigned int cmd, } } - if (_IOC_DIR(cmd) == _IOC_READ) { + if (_IOC_DIR(cmd) == _IOC_WRITE) { if ((_IOC_NR(cmd) & ~ABS_MAX) == _IOC_NR(EVIOCSABS(0))) { + if (!dev->absinfo) + return -EINVAL; + t = _IOC_NR(cmd) & ABS_MAX; if (copy_from_user(&abs, p, min_t(size_t, diff --git a/drivers/input/misc/hp_sdc_rtc.c b/drivers/input/misc/hp_sdc_rtc.c index c19066479057..7e2c12a5b839 100644 --- a/drivers/input/misc/hp_sdc_rtc.c +++ b/drivers/input/misc/hp_sdc_rtc.c @@ -104,7 +104,7 @@ static int hp_sdc_rtc_do_read_bbrtc (struct rtc_time *rtctm) t.endidx = 91; t.seq = tseq; t.act.semaphore = &tsem; - init_MUTEX_LOCKED(&tsem); + sema_init(&tsem, 0); if (hp_sdc_enqueue_transaction(&t)) return -1; @@ -698,7 +698,7 @@ static int __init hp_sdc_rtc_init(void) return -ENODEV; #endif - init_MUTEX(&i8042tregs); + sema_init(&i8042tregs, 1); if ((ret = hp_sdc_request_timer_irq(&hp_sdc_rtc_isr))) return ret; diff --git a/drivers/input/serio/hil_mlc.c b/drivers/input/serio/hil_mlc.c index c92f4edfee7b..e5624d8f1709 100644 --- a/drivers/input/serio/hil_mlc.c +++ b/drivers/input/serio/hil_mlc.c @@ -915,15 +915,15 @@ int hil_mlc_register(hil_mlc *mlc) mlc->ostarted = 0; rwlock_init(&mlc->lock); - init_MUTEX(&mlc->osem); + sema_init(&mlc->osem, 1); - init_MUTEX(&mlc->isem); + sema_init(&mlc->isem, 1); mlc->icount = -1; mlc->imatch = 0; mlc->opercnt = 0; - init_MUTEX_LOCKED(&(mlc->csem)); + sema_init(&(mlc->csem), 0); hil_mlc_clear_di_scratch(mlc); hil_mlc_clear_di_map(mlc, 0); diff --git a/drivers/input/serio/hp_sdc.c b/drivers/input/serio/hp_sdc.c index bcc2d30ec245..8c0b51c31424 100644 --- a/drivers/input/serio/hp_sdc.c +++ b/drivers/input/serio/hp_sdc.c @@ -905,7 +905,7 @@ static int __init hp_sdc_init(void) ts_sync[1] = 0x0f; ts_sync[2] = ts_sync[3] = ts_sync[4] = ts_sync[5] = 0; t_sync.act.semaphore = &s_sync; - init_MUTEX_LOCKED(&s_sync); + sema_init(&s_sync, 0); hp_sdc_enqueue_transaction(&t_sync); down(&s_sync); /* Wait for t_sync to complete */ @@ -1039,7 +1039,7 @@ static int __init hp_sdc_register(void) return hp_sdc.dev_err; } - init_MUTEX_LOCKED(&tq_init_sem); + sema_init(&tq_init_sem, 0); tq_init.actidx = 0; tq_init.idx = 1; diff --git a/drivers/isdn/act2000/act2000.h b/drivers/isdn/act2000/act2000.h index d4c50512a1ff..88c9423500d8 100644 --- a/drivers/isdn/act2000/act2000.h +++ b/drivers/isdn/act2000/act2000.h @@ -141,9 +141,9 @@ typedef struct irq_data_isa { __u8 rcvhdr[8]; } irq_data_isa; -typedef union irq_data { +typedef union act2000_irq_data { irq_data_isa isa; -} irq_data; +} act2000_irq_data; /* * Per card driver data @@ -176,7 +176,7 @@ typedef struct act2000_card { char *status_buf_read; char *status_buf_write; char *status_buf_end; - irq_data idat; /* Data used for IRQ handler */ + act2000_irq_data idat; /* Data used for IRQ handler */ isdn_if interface; /* Interface to upper layer */ char regname[35]; /* Name used for request_region */ } act2000_card; diff --git a/drivers/isdn/hardware/avm/avm_cs.c b/drivers/isdn/hardware/avm/avm_cs.c index 09b1795516f4..91f06a3ef002 100644 --- a/drivers/isdn/hardware/avm/avm_cs.c +++ b/drivers/isdn/hardware/avm/avm_cs.c @@ -20,7 +20,6 @@ #include <asm/io.h> #include <asm/system.h> -#include <pcmcia/cs.h> #include <pcmcia/cistpl.h> #include <pcmcia/ciscode.h> #include <pcmcia/ds.h> @@ -39,87 +38,32 @@ MODULE_LICENSE("GPL"); /*====================================================================*/ -/* - The event() function is this driver's Card Services event handler. - It will be called by Card Services when an appropriate card status - event is received. The config() and release() entry points are - used to configure or release a socket, in response to card insertion - and ejection events. They are invoked from the skeleton event - handler. -*/ - static int avmcs_config(struct pcmcia_device *link); static void avmcs_release(struct pcmcia_device *link); - -/* - The attach() and detach() entry points are used to create and destroy - "instances" of the driver, where each instance represents everything - needed to manage one actual PCMCIA card. -*/ - static void avmcs_detach(struct pcmcia_device *p_dev); -/*====================================================================== - - avmcs_attach() creates an "instance" of the driver, allocating - local data structures for one device. The device is registered - with Card Services. - - The dev_link structure is initialized, but we don't actually - configure the card at this point -- we wait until we receive a - card insertion event. - -======================================================================*/ - static int avmcs_probe(struct pcmcia_device *p_dev) { - - /* The io structure describes IO port mapping */ - p_dev->resource[0]->end = 16; - p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_8; - /* General socket configuration */ - p_dev->conf.Attributes = CONF_ENABLE_IRQ; - p_dev->conf.IntType = INT_MEMORY_AND_IO; - p_dev->conf.ConfigIndex = 1; - p_dev->conf.Present = PRESENT_OPTION; + p_dev->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_IO; + p_dev->config_index = 1; + p_dev->config_regs = PRESENT_OPTION; return avmcs_config(p_dev); } /* avmcs_attach */ -/*====================================================================== - - This deletes a driver "instance". The device is de-registered - with Card Services. If it has been released, all local data - structures are freed. Otherwise, the structures will be freed - when the device is released. - -======================================================================*/ static void avmcs_detach(struct pcmcia_device *link) { avmcs_release(link); } /* avmcs_detach */ -/*====================================================================== - - avmcs_config() is scheduled to run after a CARD_INSERTION event - is received, to configure the PCMCIA socket, and to make the - ethernet device available to the system. - -======================================================================*/ - -static int avmcs_configcheck(struct pcmcia_device *p_dev, - cistpl_cftable_entry_t *cf, - cistpl_cftable_entry_t *dflt, - unsigned int vcc, - void *priv_data) +static int avmcs_configcheck(struct pcmcia_device *p_dev, void *priv_data) { - if (cf->io.nwin <= 0) - return -ENODEV; + p_dev->resource[0]->end = 16; + p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH; + p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_8; - p_dev->resource[0]->start = cf->io.win[0].base; - p_dev->resource[0]->end = cf->io.win[0].len; return pcmcia_request_io(p_dev); } @@ -150,7 +94,7 @@ static int avmcs_config(struct pcmcia_device *link) /* * configure the PCMCIA socket */ - i = pcmcia_request_configuration(link, &link->conf); + i = pcmcia_enable_device(link); if (i != 0) { pcmcia_disable_device(link); break; @@ -197,13 +141,6 @@ static int avmcs_config(struct pcmcia_device *link) } /* avmcs_config */ -/*====================================================================== - - After a card is removed, avmcs_release() will unregister the net - device, and release the PCMCIA configuration. If the device is - still open, this will be postponed until it is closed. - -======================================================================*/ static void avmcs_release(struct pcmcia_device *link) { @@ -222,9 +159,7 @@ MODULE_DEVICE_TABLE(pcmcia, avmcs_ids); static struct pcmcia_driver avmcs_driver = { .owner = THIS_MODULE, - .drv = { - .name = "avm_cs", - }, + .name = "avm_cs", .probe = avmcs_probe, .remove = avmcs_detach, .id_table = avmcs_ids, diff --git a/drivers/isdn/hisax/avma1_cs.c b/drivers/isdn/hisax/avma1_cs.c index 94263c22b874..ac4dd7857cbd 100644 --- a/drivers/isdn/hisax/avma1_cs.c +++ b/drivers/isdn/hisax/avma1_cs.c @@ -20,7 +20,6 @@ #include <asm/io.h> #include <asm/system.h> -#include <pcmcia/cs.h> #include <pcmcia/cistpl.h> #include <pcmcia/ds.h> #include "hisax_cfg.h" @@ -40,67 +39,22 @@ module_param(isdnprot, int, 0); /*====================================================================*/ -/* - The event() function is this driver's Card Services event handler. - It will be called by Card Services when an appropriate card status - event is received. The config() and release() entry points are - used to configure or release a socket, in response to card insertion - and ejection events. They are invoked from the skeleton event - handler. -*/ - static int avma1cs_config(struct pcmcia_device *link) __devinit ; static void avma1cs_release(struct pcmcia_device *link); - -/* - The attach() and detach() entry points are used to create and destroy - "instances" of the driver, where each instance represents everything - needed to manage one actual PCMCIA card. -*/ - static void avma1cs_detach(struct pcmcia_device *p_dev) __devexit ; - -/*====================================================================== - - avma1cs_attach() creates an "instance" of the driver, allocating - local data structures for one device. The device is registered - with Card Services. - - The dev_link structure is initialized, but we don't actually - configure the card at this point -- we wait until we receive a - card insertion event. - -======================================================================*/ - static int __devinit avma1cs_probe(struct pcmcia_device *p_dev) { dev_dbg(&p_dev->dev, "avma1cs_attach()\n"); - /* The io structure describes IO port mapping */ - p_dev->resource[0]->end = 16; - p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_8; - p_dev->resource[1]->end = 16; - p_dev->resource[1]->flags |= IO_DATA_PATH_WIDTH_16; - /* General socket configuration */ - p_dev->conf.Attributes = CONF_ENABLE_IRQ; - p_dev->conf.IntType = INT_MEMORY_AND_IO; - p_dev->conf.ConfigIndex = 1; - p_dev->conf.Present = PRESENT_OPTION; + p_dev->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_IO; + p_dev->config_index = 1; + p_dev->config_regs = PRESENT_OPTION; return avma1cs_config(p_dev); } /* avma1cs_attach */ -/*====================================================================== - - This deletes a driver "instance". The device is de-registered - with Card Services. If it has been released, all local data - structures are freed. Otherwise, the structures will be freed - when the device is released. - -======================================================================*/ - static void __devexit avma1cs_detach(struct pcmcia_device *link) { dev_dbg(&link->dev, "avma1cs_detach(0x%p)\n", link); @@ -108,26 +62,13 @@ static void __devexit avma1cs_detach(struct pcmcia_device *link) kfree(link->priv); } /* avma1cs_detach */ -/*====================================================================== - - avma1cs_config() is scheduled to run after a CARD_INSERTION event - is received, to configure the PCMCIA socket, and to make the - ethernet device available to the system. - -======================================================================*/ - -static int avma1cs_configcheck(struct pcmcia_device *p_dev, - cistpl_cftable_entry_t *cf, - cistpl_cftable_entry_t *dflt, - unsigned int vcc, - void *priv_data) +static int avma1cs_configcheck(struct pcmcia_device *p_dev, void *priv_data) { - if (cf->io.nwin <= 0) - return -ENODEV; - - p_dev->resource[0]->start = cf->io.win[0].base; - p_dev->resource[0]->end = cf->io.win[0].len; + p_dev->resource[0]->end = 16; + p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH; + p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_8; p_dev->io_lines = 5; + return pcmcia_request_io(p_dev); } @@ -161,7 +102,7 @@ static int __devinit avma1cs_config(struct pcmcia_device *link) /* * configure the PCMCIA socket */ - i = pcmcia_request_configuration(link, &link->conf); + i = pcmcia_enable_device(link); if (i != 0) { pcmcia_disable_device(link); break; @@ -175,9 +116,6 @@ static int __devinit avma1cs_config(struct pcmcia_device *link) return -ENODEV; } - printk(KERN_NOTICE "avma1_cs: checking at i/o %#x, irq %d\n", - (unsigned int) link->resource[0]->start, link->irq); - icard.para[0] = link->irq; icard.para[1] = link->resource[0]->start; icard.protocol = isdnprot; @@ -196,14 +134,6 @@ static int __devinit avma1cs_config(struct pcmcia_device *link) return 0; } /* avma1cs_config */ -/*====================================================================== - - After a card is removed, avma1cs_release() will unregister the net - device, and release the PCMCIA configuration. If the device is - still open, this will be postponed until it is closed. - -======================================================================*/ - static void avma1cs_release(struct pcmcia_device *link) { unsigned long minor = (unsigned long) link->priv; @@ -216,7 +146,6 @@ static void avma1cs_release(struct pcmcia_device *link) pcmcia_disable_device(link); } /* avma1cs_release */ - static struct pcmcia_device_id avma1cs_ids[] = { PCMCIA_DEVICE_PROD_ID12("AVM", "ISDN A", 0x95d42008, 0xadc9d4bb), PCMCIA_DEVICE_PROD_ID12("ISDN", "CARD", 0x8d9761c8, 0x01c5aa7b), @@ -226,19 +155,15 @@ MODULE_DEVICE_TABLE(pcmcia, avma1cs_ids); static struct pcmcia_driver avma1cs_driver = { .owner = THIS_MODULE, - .drv = { - .name = "avma1_cs", - }, + .name = "avma1_cs", .probe = avma1cs_probe, .remove = __devexit_p(avma1cs_detach), .id_table = avma1cs_ids, }; -/*====================================================================*/ - static int __init init_avma1_cs(void) { - return(pcmcia_register_driver(&avma1cs_driver)); + return pcmcia_register_driver(&avma1cs_driver); } static void __exit exit_avma1_cs(void) diff --git a/drivers/isdn/hisax/config.c b/drivers/isdn/hisax/config.c index 6f9afcd5ca4e..b133378d4dc9 100644 --- a/drivers/isdn/hisax/config.c +++ b/drivers/isdn/hisax/config.c @@ -801,6 +801,16 @@ static void closecard(int cardnr) ll_unload(csta); } +static irqreturn_t card_irq(int intno, void *dev_id) +{ + struct IsdnCardState *cs = dev_id; + irqreturn_t ret = cs->irq_func(intno, cs); + + if (ret == IRQ_HANDLED) + cs->irq_cnt++; + return ret; +} + static int init_card(struct IsdnCardState *cs) { int irq_cnt, cnt = 3, ret; @@ -809,10 +819,10 @@ static int init_card(struct IsdnCardState *cs) ret = cs->cardmsg(cs, CARD_INIT, NULL); return(ret); } - irq_cnt = kstat_irqs(cs->irq); + irq_cnt = cs->irq_cnt = 0; printk(KERN_INFO "%s: IRQ %d count %d\n", CardType[cs->typ], cs->irq, irq_cnt); - if (request_irq(cs->irq, cs->irq_func, cs->irq_flags, "HiSax", cs)) { + if (request_irq(cs->irq, card_irq, cs->irq_flags, "HiSax", cs)) { printk(KERN_WARNING "HiSax: couldn't get interrupt %d\n", cs->irq); return 1; @@ -822,8 +832,8 @@ static int init_card(struct IsdnCardState *cs) /* Timeout 10ms */ msleep(10); printk(KERN_INFO "%s: IRQ %d count %d\n", - CardType[cs->typ], cs->irq, kstat_irqs(cs->irq)); - if (kstat_irqs(cs->irq) == irq_cnt) { + CardType[cs->typ], cs->irq, cs->irq_cnt); + if (cs->irq_cnt == irq_cnt) { printk(KERN_WARNING "%s: IRQ(%d) getting no interrupts during init %d\n", CardType[cs->typ], cs->irq, 4 - cnt); diff --git a/drivers/isdn/hisax/elsa_cs.c b/drivers/isdn/hisax/elsa_cs.c index b3c08aaf41c4..496d477af0f8 100644 --- a/drivers/isdn/hisax/elsa_cs.c +++ b/drivers/isdn/hisax/elsa_cs.c @@ -46,7 +46,6 @@ #include <asm/io.h> #include <asm/system.h> -#include <pcmcia/cs.h> #include <pcmcia/cistpl.h> #include <pcmcia/cisreg.h> #include <pcmcia/ds.h> @@ -64,26 +63,8 @@ MODULE_LICENSE("Dual MPL/GPL"); static int protocol = 2; /* EURO-ISDN Default */ module_param(protocol, int, 0); -/*====================================================================*/ - -/* - The event() function is this driver's Card Services event handler. - It will be called by Card Services when an appropriate card status - event is received. The config() and release() entry points are - used to configure or release a socket, in response to card insertion - and ejection events. They are invoked from the elsa_cs event - handler. -*/ - static int elsa_cs_config(struct pcmcia_device *link) __devinit ; static void elsa_cs_release(struct pcmcia_device *link); - -/* - The attach() and detach() entry points are used to create and destroy - "instances" of the driver, where each instance represents everything - needed to manage one actual PCMCIA card. -*/ - static void elsa_cs_detach(struct pcmcia_device *p_dev) __devexit; typedef struct local_info_t { @@ -92,18 +73,6 @@ typedef struct local_info_t { int cardnr; } local_info_t; -/*====================================================================== - - elsa_cs_attach() creates an "instance" of the driver, allocatingx - local data structures for one device. The device is registered - with Card Services. - - The dev_link structure is initialized, but we don't actually - configure the card at this point -- we wait until we receive a - card insertion event. - -======================================================================*/ - static int __devinit elsa_cs_probe(struct pcmcia_device *link) { local_info_t *local; @@ -119,31 +88,9 @@ static int __devinit elsa_cs_probe(struct pcmcia_device *link) local->cardnr = -1; - /* - General socket configuration defaults can go here. In this - client, we assume very little, and rely on the CIS for almost - everything. In most clients, many details (i.e., number, sizes, - and attributes of IO windows) are fixed by the nature of the - device, and can be hard-wired here. - */ - link->resource[0]->end = 8; - link->resource[0]->flags |= IO_DATA_PATH_WIDTH_AUTO; - - link->conf.Attributes = CONF_ENABLE_IRQ; - link->conf.IntType = INT_MEMORY_AND_IO; - return elsa_cs_config(link); } /* elsa_cs_attach */ -/*====================================================================== - - This deletes a driver "instance". The device is de-registered - with Card Services. If it has been released, all local data - structures are freed. Otherwise, the structures will be freed - when the device is released. - -======================================================================*/ - static void __devexit elsa_cs_detach(struct pcmcia_device *link) { local_info_t *info = link->priv; @@ -156,27 +103,17 @@ static void __devexit elsa_cs_detach(struct pcmcia_device *link) kfree(info); } /* elsa_cs_detach */ -/*====================================================================== - - elsa_cs_config() is scheduled to run after a CARD_INSERTION event - is received, to configure the PCMCIA socket, and to make the - device available to the system. - -======================================================================*/ - -static int elsa_cs_configcheck(struct pcmcia_device *p_dev, - cistpl_cftable_entry_t *cf, - cistpl_cftable_entry_t *dflt, - unsigned int vcc, - void *priv_data) +static int elsa_cs_configcheck(struct pcmcia_device *p_dev, void *priv_data) { int j; p_dev->io_lines = 3; + p_dev->resource[0]->end = 8; + p_dev->resource[0]->flags &= IO_DATA_PATH_WIDTH; + p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_AUTO; - if ((cf->io.nwin > 0) && cf->io.win[0].base) { + if ((p_dev->resource[0]->end) && p_dev->resource[0]->start) { printk(KERN_INFO "(elsa_cs: looks like the 96 model)\n"); - p_dev->resource[0]->start = cf->io.win[0].base; if (!pcmcia_request_io(p_dev)) return 0; } else { @@ -199,6 +136,8 @@ static int __devinit elsa_cs_config(struct pcmcia_device *link) dev_dbg(&link->dev, "elsa_config(0x%p)\n", link); dev = link->priv; + link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_IO; + i = pcmcia_loop_config(link, elsa_cs_configcheck, NULL); if (i != 0) goto failed; @@ -206,21 +145,10 @@ static int __devinit elsa_cs_config(struct pcmcia_device *link) if (!link->irq) goto failed; - i = pcmcia_request_configuration(link, &link->conf); + i = pcmcia_enable_device(link); if (i != 0) goto failed; - /* Finally, report what we've done */ - dev_info(&link->dev, "index 0x%02x: ", - link->conf.ConfigIndex); - if (link->conf.Attributes & CONF_ENABLE_IRQ) - printk(", irq %d", link->irq); - if (link->resource[0]) - printk(" & %pR", link->resource[0]); - if (link->resource[1]) - printk(" & %pR", link->resource[1]); - printk("\n"); - icard.para[0] = link->irq; icard.para[1] = link->resource[0]->start; icard.protocol = protocol; @@ -240,14 +168,6 @@ failed: return -ENODEV; } /* elsa_cs_config */ -/*====================================================================== - - After a card is removed, elsa_cs_release() will unregister the net - device, and release the PCMCIA configuration. If the device is - still open, this will be postponed until it is closed. - -======================================================================*/ - static void elsa_cs_release(struct pcmcia_device *link) { local_info_t *local = link->priv; @@ -291,9 +211,7 @@ MODULE_DEVICE_TABLE(pcmcia, elsa_ids); static struct pcmcia_driver elsa_cs_driver = { .owner = THIS_MODULE, - .drv = { - .name = "elsa_cs", - }, + .name = "elsa_cs", .probe = elsa_cs_probe, .remove = __devexit_p(elsa_cs_detach), .id_table = elsa_ids, diff --git a/drivers/isdn/hisax/hisax.h b/drivers/isdn/hisax/hisax.h index 832a87855ffb..32ab3924aa73 100644 --- a/drivers/isdn/hisax/hisax.h +++ b/drivers/isdn/hisax/hisax.h @@ -959,6 +959,7 @@ struct IsdnCardState { u_long event; struct work_struct tqueue; struct timer_list dbusytimer; + unsigned int irq_cnt; #ifdef ERROR_STATISTIC int err_crc; int err_tx; diff --git a/drivers/isdn/hisax/sedlbauer_cs.c b/drivers/isdn/hisax/sedlbauer_cs.c index a024192b672a..360204bc2777 100644 --- a/drivers/isdn/hisax/sedlbauer_cs.c +++ b/drivers/isdn/hisax/sedlbauer_cs.c @@ -46,7 +46,6 @@ #include <asm/io.h> #include <asm/system.h> -#include <pcmcia/cs.h> #include <pcmcia/cistpl.h> #include <pcmcia/cisreg.h> #include <pcmcia/ds.h> @@ -64,26 +63,9 @@ MODULE_LICENSE("Dual MPL/GPL"); static int protocol = 2; /* EURO-ISDN Default */ module_param(protocol, int, 0); -/*====================================================================*/ - -/* - The event() function is this driver's Card Services event handler. - It will be called by Card Services when an appropriate card status - event is received. The config() and release() entry points are - used to configure or release a socket, in response to card - insertion and ejection events. They are invoked from the sedlbauer - event handler. -*/ - static int sedlbauer_config(struct pcmcia_device *link) __devinit ; static void sedlbauer_release(struct pcmcia_device *link); -/* - The attach() and detach() entry points are used to create and destroy - "instances" of the driver, where each instance represents everything - needed to manage one actual PCMCIA card. -*/ - static void sedlbauer_detach(struct pcmcia_device *p_dev) __devexit; typedef struct local_info_t { @@ -92,18 +74,6 @@ typedef struct local_info_t { int cardnr; } local_info_t; -/*====================================================================== - - sedlbauer_attach() creates an "instance" of the driver, allocating - local data structures for one device. The device is registered - with Card Services. - - The dev_link structure is initialized, but we don't actually - configure the card at this point -- we wait until we receive a - card insertion event. - -======================================================================*/ - static int __devinit sedlbauer_probe(struct pcmcia_device *link) { local_info_t *local; @@ -118,35 +88,9 @@ static int __devinit sedlbauer_probe(struct pcmcia_device *link) local->p_dev = link; link->priv = local; - /* - General socket configuration defaults can go here. In this - client, we assume very little, and rely on the CIS for almost - everything. In most clients, many details (i.e., number, sizes, - and attributes of IO windows) are fixed by the nature of the - device, and can be hard-wired here. - */ - - /* from old sedl_cs - */ - /* The io structure describes IO port mapping */ - link->resource[0]->end = 8; - link->resource[0]->flags |= IO_DATA_PATH_WIDTH_8; - - link->conf.Attributes = 0; - link->conf.IntType = INT_MEMORY_AND_IO; - return sedlbauer_config(link); } /* sedlbauer_attach */ -/*====================================================================== - - This deletes a driver "instance". The device is de-registered - with Card Services. If it has been released, all local data - structures are freed. Otherwise, the structures will be freed - when the device is released. - -======================================================================*/ - static void __devexit sedlbauer_detach(struct pcmcia_device *link) { dev_dbg(&link->dev, "sedlbauer_detach(0x%p)\n", link); @@ -158,70 +102,15 @@ static void __devexit sedlbauer_detach(struct pcmcia_device *link) kfree(link->priv); } /* sedlbauer_detach */ -/*====================================================================== - - sedlbauer_config() is scheduled to run after a CARD_INSERTION event - is received, to configure the PCMCIA socket, and to make the - device available to the system. - -======================================================================*/ -static int sedlbauer_config_check(struct pcmcia_device *p_dev, - cistpl_cftable_entry_t *cfg, - cistpl_cftable_entry_t *dflt, - unsigned int vcc, - void *priv_data) +static int sedlbauer_config_check(struct pcmcia_device *p_dev, void *priv_data) { - if (cfg->index == 0) - return -ENODEV; - - /* Does this card need audio output? */ - if (cfg->flags & CISTPL_CFTABLE_AUDIO) { - p_dev->conf.Attributes |= CONF_ENABLE_SPKR; - p_dev->conf.Status = CCSR_AUDIO_ENA; - } + if (p_dev->config_index == 0) + return -EINVAL; - /* Use power settings for Vcc and Vpp if present */ - /* Note that the CIS values need to be rescaled */ - if (cfg->vcc.present & (1<<CISTPL_POWER_VNOM)) { - if (vcc != cfg->vcc.param[CISTPL_POWER_VNOM]/10000) - return -ENODEV; - } else if (dflt->vcc.present & (1<<CISTPL_POWER_VNOM)) { - if (vcc != dflt->vcc.param[CISTPL_POWER_VNOM]/10000) - return -ENODEV; - } - - if (cfg->vpp1.present & (1<<CISTPL_POWER_VNOM)) - p_dev->conf.Vpp = cfg->vpp1.param[CISTPL_POWER_VNOM]/10000; - else if (dflt->vpp1.present & (1<<CISTPL_POWER_VNOM)) - p_dev->conf.Vpp = dflt->vpp1.param[CISTPL_POWER_VNOM]/10000; - - p_dev->conf.Attributes |= CONF_ENABLE_IRQ; - - /* IO window settings */ - p_dev->resource[0]->end = p_dev->resource[1]->end = 0; - if ((cfg->io.nwin > 0) || (dflt->io.nwin > 0)) { - cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &dflt->io; - p_dev->resource[0]->start = io->win[0].base; - p_dev->resource[0]->end = io->win[0].len; - p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH; - p_dev->resource[0]->flags |= - pcmcia_io_cfg_data_width(io->flags); - if (io->nwin > 1) { - p_dev->resource[1]->flags = p_dev->resource[0]->flags; - p_dev->resource[1]->start = io->win[1].base; - p_dev->resource[1]->end = io->win[1].len; - } - /* This reserves IO space but doesn't actually enable it */ - p_dev->io_lines = 3; - if (pcmcia_request_io(p_dev) != 0) - return -ENODEV; - } - - return 0; + p_dev->io_lines = 3; + return pcmcia_request_io(p_dev); } - - static int __devinit sedlbauer_config(struct pcmcia_device *link) { int ret; @@ -229,44 +118,17 @@ static int __devinit sedlbauer_config(struct pcmcia_device *link) dev_dbg(&link->dev, "sedlbauer_config(0x%p)\n", link); - /* - In this loop, we scan the CIS for configuration table entries, - each of which describes a valid card configuration, including - voltage, IO window, memory window, and interrupt settings. - - We make no assumptions about the card to be configured: we use - just the information available in the CIS. In an ideal world, - this would work for any PCMCIA card, but it requires a complete - and accurate CIS. In practice, a driver usually "knows" most of - these things without consulting the CIS, and most client drivers - will only use the CIS to fill in implementation-defined details. - */ + link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_CHECK_VCC | + CONF_AUTO_SET_VPP | CONF_AUTO_AUDIO | CONF_AUTO_SET_IO; + ret = pcmcia_loop_config(link, sedlbauer_config_check, NULL); if (ret) goto failed; - /* - This actually configures the PCMCIA socket -- setting up - the I/O windows and the interrupt mapping, and putting the - card and host interface into "Memory and IO" mode. - */ - ret = pcmcia_request_configuration(link, &link->conf); + ret = pcmcia_enable_device(link); if (ret) goto failed; - /* Finally, report what we've done */ - dev_info(&link->dev, "index 0x%02x:", - link->conf.ConfigIndex); - if (link->conf.Vpp) - printk(", Vpp %d.%d", link->conf.Vpp/10, link->conf.Vpp%10); - if (link->conf.Attributes & CONF_ENABLE_IRQ) - printk(", irq %d", link->irq); - if (link->resource[0]) - printk(" & %pR", link->resource[0]); - if (link->resource[1]) - printk(" & %pR", link->resource[1]); - printk("\n"); - icard.para[0] = link->irq; icard.para[1] = link->resource[0]->start; icard.protocol = protocol; @@ -290,14 +152,6 @@ failed: } /* sedlbauer_config */ -/*====================================================================== - - After a card is removed, sedlbauer_release() will unregister the - device, and release the PCMCIA configuration. If the device is - still open, this will be postponed until it is closed. - -======================================================================*/ - static void sedlbauer_release(struct pcmcia_device *link) { local_info_t *local = link->priv; @@ -346,9 +200,7 @@ MODULE_DEVICE_TABLE(pcmcia, sedlbauer_ids); static struct pcmcia_driver sedlbauer_driver = { .owner = THIS_MODULE, - .drv = { - .name = "sedlbauer_cs", - }, + .name = "sedlbauer_cs", .probe = sedlbauer_probe, .remove = __devexit_p(sedlbauer_detach), .id_table = sedlbauer_ids, diff --git a/drivers/isdn/hisax/teles_cs.c b/drivers/isdn/hisax/teles_cs.c index 7296102ca255..282a4467ef19 100644 --- a/drivers/isdn/hisax/teles_cs.c +++ b/drivers/isdn/hisax/teles_cs.c @@ -27,7 +27,6 @@ #include <asm/io.h> #include <asm/system.h> -#include <pcmcia/cs.h> #include <pcmcia/cistpl.h> #include <pcmcia/cisreg.h> #include <pcmcia/ds.h> @@ -45,26 +44,8 @@ MODULE_LICENSE("GPL"); static int protocol = 2; /* EURO-ISDN Default */ module_param(protocol, int, 0); -/*====================================================================*/ - -/* - The event() function is this driver's Card Services event handler. - It will be called by Card Services when an appropriate card status - event is received. The config() and release() entry points are - used to configure or release a socket, in response to card insertion - and ejection events. They are invoked from the teles_cs event - handler. -*/ - static int teles_cs_config(struct pcmcia_device *link) __devinit ; static void teles_cs_release(struct pcmcia_device *link); - -/* - The attach() and detach() entry points are used to create and destroy - "instances" of the driver, where each instance represents everything - needed to manage one actual PCMCIA card. -*/ - static void teles_detach(struct pcmcia_device *p_dev) __devexit ; typedef struct local_info_t { @@ -73,18 +54,6 @@ typedef struct local_info_t { int cardnr; } local_info_t; -/*====================================================================== - - teles_attach() creates an "instance" of the driver, allocatingx - local data structures for one device. The device is registered - with Card Services. - - The dev_link structure is initialized, but we don't actually - configure the card at this point -- we wait until we receive a - card insertion event. - -======================================================================*/ - static int __devinit teles_probe(struct pcmcia_device *link) { local_info_t *local; @@ -99,31 +68,11 @@ static int __devinit teles_probe(struct pcmcia_device *link) local->p_dev = link; link->priv = local; - /* - General socket configuration defaults can go here. In this - client, we assume very little, and rely on the CIS for almost - everything. In most clients, many details (i.e., number, sizes, - and attributes of IO windows) are fixed by the nature of the - device, and can be hard-wired here. - */ - link->resource[0]->end = 96; - link->resource[0]->flags |= IO_DATA_PATH_WIDTH_AUTO; - - link->conf.Attributes = CONF_ENABLE_IRQ; - link->conf.IntType = INT_MEMORY_AND_IO; + link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_IO; return teles_cs_config(link); } /* teles_attach */ -/*====================================================================== - - This deletes a driver "instance". The device is de-registered - with Card Services. If it has been released, all local data - structures are freed. Otherwise, the structures will be freed - when the device is released. - -======================================================================*/ - static void __devexit teles_detach(struct pcmcia_device *link) { local_info_t *info = link->priv; @@ -136,27 +85,17 @@ static void __devexit teles_detach(struct pcmcia_device *link) kfree(info); } /* teles_detach */ -/*====================================================================== - - teles_cs_config() is scheduled to run after a CARD_INSERTION event - is received, to configure the PCMCIA socket, and to make the - device available to the system. - -======================================================================*/ - -static int teles_cs_configcheck(struct pcmcia_device *p_dev, - cistpl_cftable_entry_t *cf, - cistpl_cftable_entry_t *dflt, - unsigned int vcc, - void *priv_data) +static int teles_cs_configcheck(struct pcmcia_device *p_dev, void *priv_data) { int j; p_dev->io_lines = 5; + p_dev->resource[0]->end = 96; + p_dev->resource[0]->flags &= IO_DATA_PATH_WIDTH; + p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_AUTO; - if ((cf->io.nwin > 0) && cf->io.win[0].base) { + if ((p_dev->resource[0]->end) && p_dev->resource[0]->start) { printk(KERN_INFO "(teles_cs: looks like the 96 model)\n"); - p_dev->resource[0]->start = cf->io.win[0].base; if (!pcmcia_request_io(p_dev)) return 0; } else { @@ -186,21 +125,10 @@ static int __devinit teles_cs_config(struct pcmcia_device *link) if (!link->irq) goto cs_failed; - i = pcmcia_request_configuration(link, &link->conf); + i = pcmcia_enable_device(link); if (i != 0) goto cs_failed; - /* Finally, report what we've done */ - dev_info(&link->dev, "index 0x%02x:", - link->conf.ConfigIndex); - if (link->conf.Attributes & CONF_ENABLE_IRQ) - printk(", irq %d", link->irq); - if (link->resource[0]) - printk(" & %pR", link->resource[0]); - if (link->resource[1]) - printk(" & %pR", link->resource[1]); - printk("\n"); - icard.para[0] = link->irq; icard.para[1] = link->resource[0]->start; icard.protocol = protocol; @@ -222,14 +150,6 @@ cs_failed: return -ENODEV; } /* teles_cs_config */ -/*====================================================================== - - After a card is removed, teles_cs_release() will unregister the net - device, and release the PCMCIA configuration. If the device is - still open, this will be postponed until it is closed. - -======================================================================*/ - static void teles_cs_release(struct pcmcia_device *link) { local_info_t *local = link->priv; @@ -273,9 +193,7 @@ MODULE_DEVICE_TABLE(pcmcia, teles_ids); static struct pcmcia_driver teles_cs_driver = { .owner = THIS_MODULE, - .drv = { - .name = "teles_cs", - }, + .name = "teles_cs", .probe = teles_probe, .remove = __devexit_p(teles_detach), .id_table = teles_ids, diff --git a/drivers/macintosh/adb.c b/drivers/macintosh/adb.c index 1c4ee6e77937..bf64e49d996a 100644 --- a/drivers/macintosh/adb.c +++ b/drivers/macintosh/adb.c @@ -83,7 +83,7 @@ static struct adb_driver *adb_controller; BLOCKING_NOTIFIER_HEAD(adb_client_list); static int adb_got_sleep; static int adb_inited; -static DECLARE_MUTEX(adb_probe_mutex); +static DEFINE_SEMAPHORE(adb_probe_mutex); static int sleepy_trackpad; static int autopoll_devs; int __adb_probe_sync; diff --git a/drivers/media/video/v4l2-compat-ioctl32.c b/drivers/media/video/v4l2-compat-ioctl32.c index 073f01390cdd..86294ed35c9b 100644 --- a/drivers/media/video/v4l2-compat-ioctl32.c +++ b/drivers/media/video/v4l2-compat-ioctl32.c @@ -193,17 +193,24 @@ static int put_video_window32(struct video_window *kp, struct video_window32 __u struct video_code32 { char loadwhat[16]; /* name or tag of file being passed */ compat_int_t datasize; - unsigned char *data; + compat_uptr_t data; }; -static int get_microcode32(struct video_code *kp, struct video_code32 __user *up) +static struct video_code __user *get_microcode32(struct video_code32 *kp) { - if (!access_ok(VERIFY_READ, up, sizeof(struct video_code32)) || - copy_from_user(kp->loadwhat, up->loadwhat, sizeof(up->loadwhat)) || - get_user(kp->datasize, &up->datasize) || - copy_from_user(kp->data, up->data, up->datasize)) - return -EFAULT; - return 0; + struct video_code __user *up; + + up = compat_alloc_user_space(sizeof(*up)); + + /* + * NOTE! We don't actually care if these fail. If the + * user address is invalid, the native ioctl will do + * the error handling for us + */ + (void) copy_to_user(up->loadwhat, kp->loadwhat, sizeof(up->loadwhat)); + (void) put_user(kp->datasize, &up->datasize); + (void) put_user(compat_ptr(kp->data), &up->data); + return up; } #define VIDIOCGTUNER32 _IOWR('v', 4, struct video_tuner32) @@ -739,7 +746,7 @@ static long do_video_ioctl(struct file *file, unsigned int cmd, unsigned long ar struct video_tuner vt; struct video_buffer vb; struct video_window vw; - struct video_code vc; + struct video_code32 vc; struct video_audio va; #endif struct v4l2_format v2f; @@ -818,8 +825,11 @@ static long do_video_ioctl(struct file *file, unsigned int cmd, unsigned long ar break; case VIDIOCSMICROCODE: - err = get_microcode32(&karg.vc, up); - compatible_arg = 0; + /* Copy the 32-bit "video_code32" to kernel space */ + if (copy_from_user(&karg.vc, up, sizeof(karg.vc))) + return -EFAULT; + /* Convert the 32-bit version to a 64-bit version in user space */ + up = get_microcode32(&karg.vc); break; case VIDIOCSFREQ: diff --git a/drivers/mfd/ab8500-spi.c b/drivers/mfd/ab8500-spi.c index e1c8b62b086d..01b6d584442c 100644 --- a/drivers/mfd/ab8500-spi.c +++ b/drivers/mfd/ab8500-spi.c @@ -83,6 +83,11 @@ static int __devinit ab8500_spi_probe(struct spi_device *spi) struct ab8500 *ab8500; int ret; + spi->bits_per_word = 24; + ret = spi_setup(spi); + if (ret < 0) + return ret; + ab8500 = kzalloc(sizeof *ab8500, GFP_KERNEL); if (!ab8500) return -ENOMEM; diff --git a/drivers/mfd/twl4030-irq.c b/drivers/mfd/twl4030-irq.c index 097f24d8bceb..b9fda7018cef 100644 --- a/drivers/mfd/twl4030-irq.c +++ b/drivers/mfd/twl4030-irq.c @@ -78,7 +78,7 @@ struct sih { u8 irq_lines; /* number of supported irq lines */ /* SIR ignored -- set interrupt, for testing only */ - struct irq_data { + struct sih_irq_data { u8 isr_offset; u8 imr_offset; } mask[2]; @@ -810,7 +810,7 @@ int twl4030_init_irq(int irq_num, unsigned irq_base, unsigned irq_end) twl4030_irq_chip = dummy_irq_chip; twl4030_irq_chip.name = "twl4030"; - twl4030_sih_irq_chip.ack = dummy_irq_chip.ack; + twl4030_sih_irq_chip.irq_ack = dummy_irq_chip.irq_ack; for (i = irq_base; i < irq_end; i++) { set_irq_chip_and_handler(i, &twl4030_irq_chip, diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c index 5db49b124ffa..09eee6df0653 100644 --- a/drivers/mmc/core/core.c +++ b/drivers/mmc/core/core.c @@ -1631,6 +1631,19 @@ int mmc_suspend_host(struct mmc_host *host) if (host->bus_ops && !host->bus_dead) { if (host->bus_ops->suspend) err = host->bus_ops->suspend(host); + if (err == -ENOSYS || !host->bus_ops->resume) { + /* + * We simply "remove" the card in this case. + * It will be redetected on resume. + */ + if (host->bus_ops->remove) + host->bus_ops->remove(host); + mmc_claim_host(host); + mmc_detach_bus(host); + mmc_release_host(host); + host->pm_flags = 0; + err = 0; + } } mmc_bus_put(host); diff --git a/drivers/mmc/host/sdricoh_cs.c b/drivers/mmc/host/sdricoh_cs.c index 7aa65bb2af4a..f472c2714eb8 100644 --- a/drivers/mmc/host/sdricoh_cs.c +++ b/drivers/mmc/host/sdricoh_cs.c @@ -30,7 +30,6 @@ #include <linux/ioport.h> #include <linux/scatterlist.h> -#include <pcmcia/cs.h> #include <pcmcia/cistpl.h> #include <pcmcia/ds.h> #include <linux/io.h> @@ -536,9 +535,7 @@ static int sdricoh_pcmcia_resume(struct pcmcia_device *link) #endif static struct pcmcia_driver sdricoh_driver = { - .drv = { - .name = DRIVER_NAME, - }, + .name = DRIVER_NAME, .probe = sdricoh_pcmcia_probe, .remove = sdricoh_pcmcia_detach, .id_table = pcmcia_ids, diff --git a/drivers/mtd/maps/pcmciamtd.c b/drivers/mtd/maps/pcmciamtd.c index e9ca5ba7d9d2..57a1acfe22c4 100644 --- a/drivers/mtd/maps/pcmciamtd.c +++ b/drivers/mtd/maps/pcmciamtd.c @@ -16,7 +16,6 @@ #include <asm/io.h> #include <asm/system.h> -#include <pcmcia/cs.h> #include <pcmcia/cistpl.h> #include <pcmcia/ds.h> @@ -101,7 +100,7 @@ MODULE_PARM_DESC(mem_type, "Set Memory type (0=Flash, 1=RAM, 2=ROM, default=0)") static caddr_t remap_window(struct map_info *map, unsigned long to) { struct pcmciamtd_dev *dev = (struct pcmciamtd_dev *)map->map_priv_1; - window_handle_t win = (window_handle_t)map->map_priv_2; + struct resource *win = (struct resource *) map->map_priv_2; unsigned int offset; int ret; @@ -316,30 +315,19 @@ static void pcmciamtd_set_vpp(struct map_info *map, int on) { struct pcmciamtd_dev *dev = (struct pcmciamtd_dev *)map->map_priv_1; struct pcmcia_device *link = dev->p_dev; - modconf_t mod; - int ret; - - mod.Attributes = CONF_VPP1_CHANGE_VALID | CONF_VPP2_CHANGE_VALID; - mod.Vcc = 0; - mod.Vpp1 = mod.Vpp2 = on ? dev->vpp : 0; DEBUG(2, "dev = %p on = %d vpp = %d\n", dev, on, dev->vpp); - ret = pcmcia_modify_configuration(link, &mod); + pcmcia_fixup_vpp(link, on ? dev->vpp : 0); } -/* After a card is removed, pcmciamtd_release() will unregister the - * device, and release the PCMCIA configuration. If the device is - * still open, this will be postponed until it is closed. - */ - static void pcmciamtd_release(struct pcmcia_device *link) { struct pcmciamtd_dev *dev = link->priv; DEBUG(3, "link = 0x%p", link); - if (link->win) { + if (link->resource[2]->end) { if(dev->win_base) { iounmap(dev->win_base); dev->win_base = NULL; @@ -482,18 +470,12 @@ static void card_settings(struct pcmciamtd_dev *dev, struct pcmcia_device *p_dev } -/* pcmciamtd_config() is scheduled to run after a CARD_INSERTION event - * is received, to configure the PCMCIA socket, and to make the - * MTD device available to the system. - */ - static int pcmciamtd_config(struct pcmcia_device *link) { struct pcmciamtd_dev *dev = link->priv; struct mtd_info *mtd = NULL; - win_req_t req; int ret; - int i; + int i, j = 0; static char *probes[] = { "jedec_probe", "cfi_probe" }; int new_name = 0; @@ -520,28 +502,34 @@ static int pcmciamtd_config(struct pcmcia_device *link) * smaller windows until we succeed */ - req.Attributes = WIN_MEMORY_TYPE_CM | WIN_ENABLE; - req.Attributes |= (dev->pcmcia_map.bankwidth == 1) ? WIN_DATA_WIDTH_8 : WIN_DATA_WIDTH_16; - req.Base = 0; - req.AccessSpeed = mem_speed; - link->win = (window_handle_t)link; - req.Size = (force_size) ? force_size << 20 : MAX_PCMCIA_ADDR; + link->resource[2]->flags |= WIN_MEMORY_TYPE_CM | WIN_ENABLE; + link->resource[2]->flags |= (dev->pcmcia_map.bankwidth == 1) ? + WIN_DATA_WIDTH_8 : WIN_DATA_WIDTH_16; + link->resource[2]->start = 0; + link->resource[2]->end = (force_size) ? force_size << 20 : + MAX_PCMCIA_ADDR; dev->win_size = 0; do { int ret; - DEBUG(2, "requesting window with size = %dKiB memspeed = %d", - req.Size >> 10, req.AccessSpeed); - ret = pcmcia_request_window(link, &req, &link->win); + DEBUG(2, "requesting window with size = %luKiB memspeed = %d", + (unsigned long) resource_size(link->resource[2]) >> 10, + mem_speed); + ret = pcmcia_request_window(link, link->resource[2], mem_speed); DEBUG(2, "ret = %d dev->win_size = %d", ret, dev->win_size); if(ret) { - req.Size >>= 1; + j++; + link->resource[2]->start = 0; + link->resource[2]->end = (force_size) ? + force_size << 20 : MAX_PCMCIA_ADDR; + link->resource[2]->end >>= j; } else { - DEBUG(2, "Got window of size %dKiB", req.Size >> 10); - dev->win_size = req.Size; + DEBUG(2, "Got window of size %luKiB", (unsigned long) + resource_size(link->resource[2]) >> 10); + dev->win_size = resource_size(link->resource[2]); break; } - } while(req.Size >= 0x1000); + } while (link->resource[2]->end >= 0x1000); DEBUG(2, "dev->win_size = %d", dev->win_size); @@ -553,33 +541,31 @@ static int pcmciamtd_config(struct pcmcia_device *link) DEBUG(1, "Allocated a window of %dKiB", dev->win_size >> 10); /* Get write protect status */ - DEBUG(2, "window handle = 0x%8.8lx", (unsigned long)link->win); - dev->win_base = ioremap(req.Base, req.Size); + dev->win_base = ioremap(link->resource[2]->start, + resource_size(link->resource[2])); if(!dev->win_base) { - dev_err(&dev->p_dev->dev, "ioremap(%lu, %u) failed\n", - req.Base, req.Size); + dev_err(&dev->p_dev->dev, "ioremap(%pR) failed\n", + link->resource[2]); pcmciamtd_release(link); return -ENODEV; } - DEBUG(1, "mapped window dev = %p req.base = 0x%lx base = %p size = 0x%x", - dev, req.Base, dev->win_base, req.Size); + DEBUG(1, "mapped window dev = %p @ %pR, base = %p", + dev, link->resource[2], dev->win_base); dev->offset = 0; dev->pcmcia_map.map_priv_1 = (unsigned long)dev; - dev->pcmcia_map.map_priv_2 = (unsigned long)link->win; + dev->pcmcia_map.map_priv_2 = (unsigned long)link->resource[2]; dev->vpp = (vpp) ? vpp : link->socket->socket.Vpp; - link->conf.Attributes = 0; if(setvpp == 2) { - link->conf.Vpp = dev->vpp; + link->vpp = dev->vpp; } else { - link->conf.Vpp = 0; + link->vpp = 0; } - link->conf.IntType = INT_MEMORY; - link->conf.ConfigIndex = 0; + link->config_index = 0; DEBUG(2, "Setting Configuration"); - ret = pcmcia_request_configuration(link, &link->conf); + ret = pcmcia_enable_device(link); if (ret != 0) { if (dev->win_base) { iounmap(dev->win_base); @@ -680,12 +666,6 @@ static int pcmciamtd_resume(struct pcmcia_device *dev) } -/* This deletes a driver "instance". The device is de-registered - * with Card Services. If it has been released, all local data - * structures are freed. Otherwise, the structures will be freed - * when the device is released. - */ - static void pcmciamtd_detach(struct pcmcia_device *link) { struct pcmciamtd_dev *dev = link->priv; @@ -703,11 +683,6 @@ static void pcmciamtd_detach(struct pcmcia_device *link) } -/* pcmciamtd_attach() creates an "instance" of the driver, allocating - * local data structures for one device. The device is registered - * with Card Services. - */ - static int pcmciamtd_probe(struct pcmcia_device *link) { struct pcmciamtd_dev *dev; @@ -720,9 +695,6 @@ static int pcmciamtd_probe(struct pcmcia_device *link) dev->p_dev = link; link->priv = dev; - link->conf.Attributes = 0; - link->conf.IntType = INT_MEMORY; - return pcmciamtd_config(link); } @@ -757,9 +729,7 @@ static struct pcmcia_device_id pcmciamtd_ids[] = { MODULE_DEVICE_TABLE(pcmcia, pcmciamtd_ids); static struct pcmcia_driver pcmciamtd_driver = { - .drv = { - .name = "pcmciamtd" - }, + .name = "pcmciamtd", .probe = pcmciamtd_probe, .remove = pcmciamtd_detach, .owner = THIS_MODULE, @@ -771,8 +741,6 @@ static struct pcmcia_driver pcmciamtd_driver = { static int __init init_pcmciamtd(void) { - info(DRIVER_DESC); - if(bankwidth && bankwidth != 1 && bankwidth != 2) { info("bad bankwidth (%d), using default", bankwidth); bankwidth = 2; diff --git a/drivers/mtd/nand/mxc_nand.c b/drivers/mtd/nand/mxc_nand.c index b2828e84d243..214b03afdd48 100644 --- a/drivers/mtd/nand/mxc_nand.c +++ b/drivers/mtd/nand/mxc_nand.c @@ -30,6 +30,8 @@ #include <linux/clk.h> #include <linux/err.h> #include <linux/io.h> +#include <linux/irq.h> +#include <linux/completion.h> #include <asm/mach/flash.h> #include <mach/mxc_nand.h> @@ -151,7 +153,7 @@ struct mxc_nand_host { int irq; int eccsize; - wait_queue_head_t irq_waitq; + struct completion op_completion; uint8_t *data_buf; unsigned int buf_start; @@ -164,6 +166,7 @@ struct mxc_nand_host { void (*send_read_id)(struct mxc_nand_host *); uint16_t (*get_dev_status)(struct mxc_nand_host *); int (*check_int)(struct mxc_nand_host *); + void (*irq_control)(struct mxc_nand_host *, int); }; /* OOB placement block for use with hardware ecc generation */ @@ -216,9 +219,12 @@ static irqreturn_t mxc_nfc_irq(int irq, void *dev_id) { struct mxc_nand_host *host = dev_id; - disable_irq_nosync(irq); + if (!host->check_int(host)) + return IRQ_NONE; - wake_up(&host->irq_waitq); + host->irq_control(host, 0); + + complete(&host->op_completion); return IRQ_HANDLED; } @@ -245,11 +251,54 @@ static int check_int_v1_v2(struct mxc_nand_host *host) if (!(tmp & NFC_V1_V2_CONFIG2_INT)) return 0; - writew(tmp & ~NFC_V1_V2_CONFIG2_INT, NFC_V1_V2_CONFIG2); + if (!cpu_is_mx21()) + writew(tmp & ~NFC_V1_V2_CONFIG2_INT, NFC_V1_V2_CONFIG2); return 1; } +/* + * It has been observed that the i.MX21 cannot read the CONFIG2:INT bit + * if interrupts are masked (CONFIG1:INT_MSK is set). To handle this, the + * driver can enable/disable the irq line rather than simply masking the + * interrupts. + */ +static void irq_control_mx21(struct mxc_nand_host *host, int activate) +{ + if (activate) + enable_irq(host->irq); + else + disable_irq_nosync(host->irq); +} + +static void irq_control_v1_v2(struct mxc_nand_host *host, int activate) +{ + uint16_t tmp; + + tmp = readw(NFC_V1_V2_CONFIG1); + + if (activate) + tmp &= ~NFC_V1_V2_CONFIG1_INT_MSK; + else + tmp |= NFC_V1_V2_CONFIG1_INT_MSK; + + writew(tmp, NFC_V1_V2_CONFIG1); +} + +static void irq_control_v3(struct mxc_nand_host *host, int activate) +{ + uint32_t tmp; + + tmp = readl(NFC_V3_CONFIG2); + + if (activate) + tmp &= ~NFC_V3_CONFIG2_INT_MSK; + else + tmp |= NFC_V3_CONFIG2_INT_MSK; + + writel(tmp, NFC_V3_CONFIG2); +} + /* This function polls the NANDFC to wait for the basic operation to * complete by checking the INT bit of config2 register. */ @@ -259,10 +308,9 @@ static void wait_op_done(struct mxc_nand_host *host, int useirq) if (useirq) { if (!host->check_int(host)) { - - enable_irq(host->irq); - - wait_event(host->irq_waitq, host->check_int(host)); + INIT_COMPLETION(host->op_completion); + host->irq_control(host, 1); + wait_for_completion(&host->op_completion); } } else { while (max_retries-- > 0) { @@ -799,6 +847,7 @@ static void preset_v3(struct mtd_info *mtd) NFC_V3_CONFIG2_2CMD_PHASES | NFC_V3_CONFIG2_SPAS(mtd->oobsize >> 1) | NFC_V3_CONFIG2_ST_CMD(0x70) | + NFC_V3_CONFIG2_INT_MSK | NFC_V3_CONFIG2_NUM_ADDR_PHASE0; if (chip->ecc.mode == NAND_ECC_HW) @@ -1024,6 +1073,10 @@ static int __init mxcnd_probe(struct platform_device *pdev) host->send_read_id = send_read_id_v1_v2; host->get_dev_status = get_dev_status_v1_v2; host->check_int = check_int_v1_v2; + if (cpu_is_mx21()) + host->irq_control = irq_control_mx21; + else + host->irq_control = irq_control_v1_v2; } if (nfc_is_v21()) { @@ -1062,6 +1115,7 @@ static int __init mxcnd_probe(struct platform_device *pdev) host->send_read_id = send_read_id_v3; host->check_int = check_int_v3; host->get_dev_status = get_dev_status_v3; + host->irq_control = irq_control_v3; oob_smallpage = &nandv2_hw_eccoob_smallpage; oob_largepage = &nandv2_hw_eccoob_largepage; } else @@ -1093,14 +1147,34 @@ static int __init mxcnd_probe(struct platform_device *pdev) this->options |= NAND_USE_FLASH_BBT; } - init_waitqueue_head(&host->irq_waitq); + init_completion(&host->op_completion); host->irq = platform_get_irq(pdev, 0); + /* + * mask the interrupt. For i.MX21 explicitely call + * irq_control_v1_v2 to use the mask bit. We can't call + * disable_irq_nosync() for an interrupt we do not own yet. + */ + if (cpu_is_mx21()) + irq_control_v1_v2(host, 0); + else + host->irq_control(host, 0); + err = request_irq(host->irq, mxc_nfc_irq, IRQF_DISABLED, DRIVER_NAME, host); if (err) goto eirq; + host->irq_control(host, 0); + + /* + * Now that the interrupt is disabled make sure the interrupt + * mask bit is cleared on i.MX21. Otherwise we can't read + * the interrupt status bit on this machine. + */ + if (cpu_is_mx21()) + irq_control_v1_v2(host, 1); + /* first scan to find the device and get the page size */ if (nand_scan_ident(mtd, 1, NULL)) { err = -ENXIO; diff --git a/drivers/net/3c527.c b/drivers/net/3c527.c index 70705d1306b9..eca55c52bdfd 100644 --- a/drivers/net/3c527.c +++ b/drivers/net/3c527.c @@ -522,7 +522,7 @@ static int __init mc32_probe1(struct net_device *dev, int slot) lp->tx_len = lp->exec_box->data[9]; /* Transmit list count */ lp->rx_len = lp->exec_box->data[11]; /* Receive list count */ - init_MUTEX_LOCKED(&lp->cmd_mutex); + sema_init(&lp->cmd_mutex, 0); init_completion(&lp->execution_cmd); init_completion(&lp->xceiver_cmd); diff --git a/drivers/net/bfin_mac.c b/drivers/net/bfin_mac.c index 012613fde3f4..03d063554b7f 100644 --- a/drivers/net/bfin_mac.c +++ b/drivers/net/bfin_mac.c @@ -38,6 +38,7 @@ #include <asm/blackfin.h> #include <asm/cacheflush.h> #include <asm/portmux.h> +#include <mach/pll.h> #include "bfin_mac.h" diff --git a/drivers/net/hamradio/6pack.c b/drivers/net/hamradio/6pack.c index 4b52c767ad05..3e5d0b6b6516 100644 --- a/drivers/net/hamradio/6pack.c +++ b/drivers/net/hamradio/6pack.c @@ -608,7 +608,7 @@ static int sixpack_open(struct tty_struct *tty) spin_lock_init(&sp->lock); atomic_set(&sp->refcnt, 1); - init_MUTEX_LOCKED(&sp->dead_sem); + sema_init(&sp->dead_sem, 0); /* !!! length of the buffers. MTU is IP MTU, not PACLEN! */ diff --git a/drivers/net/hamradio/mkiss.c b/drivers/net/hamradio/mkiss.c index 66e88bd59caa..4c628393c8b1 100644 --- a/drivers/net/hamradio/mkiss.c +++ b/drivers/net/hamradio/mkiss.c @@ -747,7 +747,7 @@ static int mkiss_open(struct tty_struct *tty) spin_lock_init(&ax->buflock); atomic_set(&ax->refcnt, 1); - init_MUTEX_LOCKED(&ax->dead_sem); + sema_init(&ax->dead_sem, 0); ax->tty = tty; tty->disc_data = ax; diff --git a/drivers/net/irda/sir_dev.c b/drivers/net/irda/sir_dev.c index 1b051dab7b29..51d74447f8f8 100644 --- a/drivers/net/irda/sir_dev.c +++ b/drivers/net/irda/sir_dev.c @@ -909,7 +909,7 @@ struct sir_dev * sirdev_get_instance(const struct sir_driver *drv, const char *n dev->tx_skb = NULL; spin_lock_init(&dev->tx_lock); - init_MUTEX(&dev->fsm.sem); + sema_init(&dev->fsm.sem, 1); dev->drv = drv; dev->netdev = ndev; diff --git a/drivers/net/pcmcia/3c574_cs.c b/drivers/net/pcmcia/3c574_cs.c index c683f77c6f42..ff824e11f0b6 100644 --- a/drivers/net/pcmcia/3c574_cs.c +++ b/drivers/net/pcmcia/3c574_cs.c @@ -87,7 +87,6 @@ earlier 3Com products. #include <linux/bitops.h> #include <linux/mii.h> -#include <pcmcia/cs.h> #include <pcmcia/cistpl.h> #include <pcmcia/cisreg.h> #include <pcmcia/ciscode.h> @@ -280,25 +279,15 @@ static int tc574_probe(struct pcmcia_device *link) spin_lock_init(&lp->window_lock); link->resource[0]->end = 32; link->resource[0]->flags |= IO_DATA_PATH_WIDTH_16; - link->conf.Attributes = CONF_ENABLE_IRQ; - link->conf.IntType = INT_MEMORY_AND_IO; - link->conf.ConfigIndex = 1; + link->config_flags |= CONF_ENABLE_IRQ; + link->config_index = 1; dev->netdev_ops = &el3_netdev_ops; SET_ETHTOOL_OPS(dev, &netdev_ethtool_ops); dev->watchdog_timeo = TX_TIMEOUT; return tc574_config(link); -} /* tc574_attach */ - -/* - - This deletes a driver "instance". The device is de-registered - with Card Services. If it has been released, all local data - structures are freed. Otherwise, the structures will be freed - when the device is released. - -*/ +} static void tc574_detach(struct pcmcia_device *link) { @@ -313,12 +302,6 @@ static void tc574_detach(struct pcmcia_device *link) free_netdev(dev); } /* tc574_detach */ -/* - tc574_config() is scheduled to run after a CARD_INSERTION event - is received, to configure the PCMCIA socket, and to make the - ethernet device available to the system. -*/ - static const char *ram_split[] = {"5:3", "3:1", "1:1", "3:5"}; static int tc574_config(struct pcmcia_device *link) @@ -352,7 +335,7 @@ static int tc574_config(struct pcmcia_device *link) if (ret) goto failed; - ret = pcmcia_request_configuration(link, &link->conf); + ret = pcmcia_enable_device(link); if (ret) goto failed; @@ -465,12 +448,6 @@ failed: } /* tc574_config */ -/* - After a card is removed, tc574_release() will unregister the net - device, and release the PCMCIA configuration. If the device is - still open, this will be postponed until it is closed. -*/ - static void tc574_release(struct pcmcia_device *link) { pcmcia_disable_device(link); @@ -1198,9 +1175,7 @@ MODULE_DEVICE_TABLE(pcmcia, tc574_ids); static struct pcmcia_driver tc574_driver = { .owner = THIS_MODULE, - .drv = { - .name = "3c574_cs", - }, + .name = "3c574_cs", .probe = tc574_probe, .remove = tc574_detach, .id_table = tc574_ids, diff --git a/drivers/net/pcmcia/3c589_cs.c b/drivers/net/pcmcia/3c589_cs.c index 61f9cf2100ff..a07e22295330 100644 --- a/drivers/net/pcmcia/3c589_cs.c +++ b/drivers/net/pcmcia/3c589_cs.c @@ -41,7 +41,6 @@ #include <linux/bitops.h> #include <linux/jiffies.h> -#include <pcmcia/cs.h> #include <pcmcia/cistpl.h> #include <pcmcia/cisreg.h> #include <pcmcia/ciscode.h> @@ -176,14 +175,6 @@ static const struct ethtool_ops netdev_ethtool_ops; static void tc589_detach(struct pcmcia_device *p_dev); -/*====================================================================== - - tc589_attach() creates an "instance" of the driver, allocating - local data structures for one device. The device is registered - with Card Services. - -======================================================================*/ - static const struct net_device_ops el3_netdev_ops = { .ndo_open = el3_open, .ndo_stop = el3_close, @@ -216,9 +207,8 @@ static int tc589_probe(struct pcmcia_device *link) link->resource[0]->end = 16; link->resource[0]->flags |= IO_DATA_PATH_WIDTH_16; - link->conf.Attributes = CONF_ENABLE_IRQ; - link->conf.IntType = INT_MEMORY_AND_IO; - link->conf.ConfigIndex = 1; + link->config_flags |= CONF_ENABLE_IRQ; + link->config_index = 1; dev->netdev_ops = &el3_netdev_ops; dev->watchdog_timeo = TX_TIMEOUT; @@ -226,16 +216,7 @@ static int tc589_probe(struct pcmcia_device *link) SET_ETHTOOL_OPS(dev, &netdev_ethtool_ops); return tc589_config(link); -} /* tc589_attach */ - -/*====================================================================== - - This deletes a driver "instance". The device is de-registered - with Card Services. If it has been released, all local data - structures are freed. Otherwise, the structures will be freed - when the device is released. - -======================================================================*/ +} static void tc589_detach(struct pcmcia_device *link) { @@ -250,14 +231,6 @@ static void tc589_detach(struct pcmcia_device *link) free_netdev(dev); } /* tc589_detach */ -/*====================================================================== - - tc589_config() is scheduled to run after a CARD_INSERTION event - is received, to configure the PCMCIA socket, and to make the - ethernet device available to the system. - -======================================================================*/ - static int tc589_config(struct pcmcia_device *link) { struct net_device *dev = link->priv; @@ -294,7 +267,7 @@ static int tc589_config(struct pcmcia_device *link) if (ret) goto failed; - ret = pcmcia_request_configuration(link, &link->conf); + ret = pcmcia_enable_device(link); if (ret) goto failed; @@ -352,14 +325,6 @@ failed: return -ENODEV; } /* tc589_config */ -/*====================================================================== - - After a card is removed, tc589_release() will unregister the net - device, and release the PCMCIA configuration. If the device is - still open, this will be postponed until it is closed. - -======================================================================*/ - static void tc589_release(struct pcmcia_device *link) { pcmcia_disable_device(link); @@ -955,9 +920,7 @@ MODULE_DEVICE_TABLE(pcmcia, tc589_ids); static struct pcmcia_driver tc589_driver = { .owner = THIS_MODULE, - .drv = { - .name = "3c589_cs", - }, + .name = "3c589_cs", .probe = tc589_probe, .remove = tc589_detach, .id_table = tc589_ids, diff --git a/drivers/net/pcmcia/axnet_cs.c b/drivers/net/pcmcia/axnet_cs.c index 5f05ffb240cc..9e8b28b271ae 100644 --- a/drivers/net/pcmcia/axnet_cs.c +++ b/drivers/net/pcmcia/axnet_cs.c @@ -39,7 +39,6 @@ #include <linux/mii.h> #include "../8390.h" -#include <pcmcia/cs.h> #include <pcmcia/cistpl.h> #include <pcmcia/ciscode.h> #include <pcmcia/ds.h> @@ -140,14 +139,6 @@ static const struct net_device_ops axnet_netdev_ops = { .ndo_validate_addr = eth_validate_addr, }; -/*====================================================================== - - axnet_attach() creates an "instance" of the driver, allocating - local data structures for one device. The device is registered - with Card Services. - -======================================================================*/ - static int axnet_probe(struct pcmcia_device *link) { axnet_dev_t *info; @@ -166,8 +157,7 @@ static int axnet_probe(struct pcmcia_device *link) info = PRIV(dev); info->p_dev = link; link->priv = dev; - link->conf.Attributes = CONF_ENABLE_IRQ; - link->conf.IntType = INT_MEMORY_AND_IO; + link->config_flags |= CONF_ENABLE_IRQ; dev->netdev_ops = &axnet_netdev_ops; @@ -177,15 +167,6 @@ static int axnet_probe(struct pcmcia_device *link) return axnet_config(link); } /* axnet_attach */ -/*====================================================================== - - This deletes a driver "instance". The device is de-registered - with Card Services. If it has been released, all local data - structures are freed. Otherwise, the structures will be freed - when the device is released. - -======================================================================*/ - static void axnet_detach(struct pcmcia_device *link) { struct net_device *dev = link->priv; @@ -231,7 +212,7 @@ static int get_prom(struct pcmcia_device *link) }; /* Not much of a test, but the alternatives are messy */ - if (link->conf.ConfigBase != 0x03c0) + if (link->config_base != 0x03c0) return 0; axnet_reset_8390(dev); @@ -248,14 +229,6 @@ static int get_prom(struct pcmcia_device *link) return 1; } /* get_prom */ -/*====================================================================== - - axnet_config() is scheduled to run after a CARD_INSERTION event - is received, to configure the PCMCIA socket, and to make the - ethernet device available to the system. - -======================================================================*/ - static int try_io_port(struct pcmcia_device *link) { int j, ret; @@ -286,35 +259,16 @@ static int try_io_port(struct pcmcia_device *link) } } -static int axnet_configcheck(struct pcmcia_device *p_dev, - cistpl_cftable_entry_t *cfg, - cistpl_cftable_entry_t *dflt, - unsigned int vcc, - void *priv_data) +static int axnet_configcheck(struct pcmcia_device *p_dev, void *priv_data) { - int i; - cistpl_io_t *io = &cfg->io; + if (p_dev->config_index == 0) + return -EINVAL; - if (cfg->index == 0 || cfg->io.nwin == 0) + p_dev->config_index = 0x05; + if (p_dev->resource[0]->end + p_dev->resource[1]->end < 32) return -ENODEV; - p_dev->conf.ConfigIndex = 0x05; - /* For multifunction cards, by convention, we configure the - network function with window 0, and serial with window 1 */ - if (io->nwin > 1) { - i = (io->win[1].len > io->win[0].len); - p_dev->resource[1]->start = io->win[1-i].base; - p_dev->resource[1]->end = io->win[1-i].len; - } else { - i = p_dev->resource[1]->end = 0; - } - p_dev->resource[0]->start = io->win[i].base; - p_dev->resource[0]->end = io->win[i].len; - p_dev->io_lines = io->flags & CISTPL_IO_LINES_MASK; - if (p_dev->resource[0]->end + p_dev->resource[1]->end >= 32) - return try_io_port(p_dev); - - return -ENODEV; + return try_io_port(p_dev); } static int axnet_config(struct pcmcia_device *link) @@ -326,20 +280,19 @@ static int axnet_config(struct pcmcia_device *link) dev_dbg(&link->dev, "axnet_config(0x%p)\n", link); /* don't trust the CIS on this; Linksys got it wrong */ - link->conf.Present = 0x63; + link->config_regs = 0x63; + link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_IO; ret = pcmcia_loop_config(link, axnet_configcheck, NULL); if (ret != 0) goto failed; if (!link->irq) goto failed; + + if (resource_size(link->resource[1]) == 8) + link->config_flags |= CONF_ENABLE_SPKR; - if (resource_size(link->resource[1]) == 8) { - link->conf.Attributes |= CONF_ENABLE_SPKR; - link->conf.Status = CCSR_AUDIO_ENA; - } - - ret = pcmcia_request_configuration(link, &link->conf); + ret = pcmcia_enable_device(link); if (ret) goto failed; @@ -414,14 +367,6 @@ failed: return -ENODEV; } /* axnet_config */ -/*====================================================================== - - After a card is removed, axnet_release() will unregister the net - device, and release the PCMCIA configuration. If the device is - still open, this will be postponed until it is closed. - -======================================================================*/ - static void axnet_release(struct pcmcia_device *link) { pcmcia_disable_device(link); @@ -783,9 +728,7 @@ MODULE_DEVICE_TABLE(pcmcia, axnet_ids); static struct pcmcia_driver axnet_cs_driver = { .owner = THIS_MODULE, - .drv = { - .name = "axnet_cs", - }, + .name = "axnet_cs", .probe = axnet_probe, .remove = axnet_detach, .id_table = axnet_ids, diff --git a/drivers/net/pcmcia/com20020_cs.c b/drivers/net/pcmcia/com20020_cs.c index 3c400cfa82ae..b706a7249477 100644 --- a/drivers/net/pcmcia/com20020_cs.c +++ b/drivers/net/pcmcia/com20020_cs.c @@ -43,7 +43,6 @@ #include <linux/arcdevice.h> #include <linux/com20020.h> -#include <pcmcia/cs.h> #include <pcmcia/cistpl.h> #include <pcmcia/ds.h> @@ -123,14 +122,6 @@ typedef struct com20020_dev_t { struct net_device *dev; } com20020_dev_t; -/*====================================================================== - - com20020_attach() creates an "instance" of the driver, allocating - local data structures for one device. The device is registered - with Card Services. - -======================================================================*/ - static int com20020_probe(struct pcmcia_device *p_dev) { com20020_dev_t *info; @@ -160,8 +151,7 @@ static int com20020_probe(struct pcmcia_device *p_dev) p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_8; p_dev->resource[0]->end = 16; - p_dev->conf.Attributes = CONF_ENABLE_IRQ; - p_dev->conf.IntType = INT_MEMORY_AND_IO; + p_dev->config_flags |= CONF_ENABLE_IRQ; info->dev = dev; p_dev->priv = info; @@ -174,15 +164,6 @@ fail_alloc_info: return -ENOMEM; } /* com20020_attach */ -/*====================================================================== - - This deletes a driver "instance". The device is de-registered - with Card Services. If it has been released, all local data - structures are freed. Otherwise, the structures will be freed - when the device is released. - -======================================================================*/ - static void com20020_detach(struct pcmcia_device *link) { struct com20020_dev_t *info = link->priv; @@ -221,14 +202,6 @@ static void com20020_detach(struct pcmcia_device *link) } /* com20020_detach */ -/*====================================================================== - - com20020_config() is scheduled to run after a CARD_INSERTION event - is received, to configure the PCMCIA socket, and to make the - device available to the system. - -======================================================================*/ - static int com20020_config(struct pcmcia_device *link) { struct arcnet_local *lp; @@ -282,7 +255,7 @@ static int com20020_config(struct pcmcia_device *link) dev->irq = link->irq; - ret = pcmcia_request_configuration(link, &link->conf); + ret = pcmcia_enable_device(link); if (ret) goto failed; @@ -316,14 +289,6 @@ failed: return -ENODEV; } /* com20020_config */ -/*====================================================================== - - After a card is removed, com20020_release() will unregister the net - device, and release the PCMCIA configuration. If the device is - still open, this will be postponed until it is closed. - -======================================================================*/ - static void com20020_release(struct pcmcia_device *link) { dev_dbg(&link->dev, "com20020_release\n"); @@ -366,9 +331,7 @@ MODULE_DEVICE_TABLE(pcmcia, com20020_ids); static struct pcmcia_driver com20020_cs_driver = { .owner = THIS_MODULE, - .drv = { - .name = "com20020_cs", - }, + .name = "com20020_cs", .probe = com20020_probe, .remove = com20020_detach, .id_table = com20020_ids, diff --git a/drivers/net/pcmcia/fmvj18x_cs.c b/drivers/net/pcmcia/fmvj18x_cs.c index 98fffb03ecd7..1c327598bbe8 100644 --- a/drivers/net/pcmcia/fmvj18x_cs.c +++ b/drivers/net/pcmcia/fmvj18x_cs.c @@ -49,7 +49,6 @@ #include <linux/ioport.h> #include <linux/crc32.h> -#include <pcmcia/cs.h> #include <pcmcia/cistpl.h> #include <pcmcia/ciscode.h> #include <pcmcia/ds.h> @@ -252,8 +251,7 @@ static int fmvj18x_probe(struct pcmcia_device *link) link->resource[0]->flags |= IO_DATA_PATH_WIDTH_AUTO; /* General socket configuration */ - link->conf.Attributes = CONF_ENABLE_IRQ; - link->conf.IntType = INT_MEMORY_AND_IO; + link->config_flags |= CONF_ENABLE_IRQ; dev->netdev_ops = &fjn_netdev_ops; dev->watchdog_timeo = TX_TIMEOUT; @@ -313,7 +311,7 @@ static int ungermann_try_io_port(struct pcmcia_device *link) ret = pcmcia_request_io(link); if (ret == 0) { /* calculate ConfigIndex value */ - link->conf.ConfigIndex = + link->config_index = ((link->resource[0]->start & 0x0f0) >> 3) | 0x22; return ret; } @@ -321,11 +319,7 @@ static int ungermann_try_io_port(struct pcmcia_device *link) return ret; /* RequestIO failed */ } -static int fmvj18x_ioprobe(struct pcmcia_device *p_dev, - cistpl_cftable_entry_t *cfg, - cistpl_cftable_entry_t *dflt, - unsigned int vcc, - void *priv_data) +static int fmvj18x_ioprobe(struct pcmcia_device *p_dev, void *priv_data) { return 0; /* strange, but that's what the code did already before... */ } @@ -362,28 +356,28 @@ static int fmvj18x_config(struct pcmcia_device *link) link->card_id == PRODID_TDK_NP9610 || link->card_id == PRODID_TDK_MN3200) { /* MultiFunction Card */ - link->conf.ConfigBase = 0x800; - link->conf.ConfigIndex = 0x47; + link->config_base = 0x800; + link->config_index = 0x47; link->resource[1]->end = 8; } break; case MANFID_NEC: cardtype = NEC; /* MultiFunction Card */ - link->conf.ConfigBase = 0x800; - link->conf.ConfigIndex = 0x47; + link->config_base = 0x800; + link->config_index = 0x47; link->resource[1]->end = 8; break; case MANFID_KME: cardtype = KME; /* MultiFunction Card */ - link->conf.ConfigBase = 0x800; - link->conf.ConfigIndex = 0x47; + link->config_base = 0x800; + link->config_index = 0x47; link->resource[1]->end = 8; break; case MANFID_CONTEC: cardtype = CONTEC; break; case MANFID_FUJITSU: - if (link->conf.ConfigBase == 0x0fe0) + if (link->config_base == 0x0fe0) cardtype = MBH10302; else if (link->card_id == PRODID_FUJITSU_MBH10302) /* RATOC REX-5588/9822/4886's PRODID are 0004(=MBH10302), @@ -403,10 +397,10 @@ static int fmvj18x_config(struct pcmcia_device *link) case MANFID_FUJITSU: if (link->card_id == PRODID_FUJITSU_MBH10304) { cardtype = XXX10304; /* MBH10304 with buggy CIS */ - link->conf.ConfigIndex = 0x20; + link->config_index = 0x20; } else { cardtype = MBH10302; /* NextCom NC5310, etc. */ - link->conf.ConfigIndex = 1; + link->config_index = 1; } break; case MANFID_UNGERMANN: @@ -414,7 +408,7 @@ static int fmvj18x_config(struct pcmcia_device *link) break; default: cardtype = MBH10302; - link->conf.ConfigIndex = 1; + link->config_index = 1; } } @@ -432,7 +426,7 @@ static int fmvj18x_config(struct pcmcia_device *link) ret = pcmcia_request_irq(link, fjn_interrupt); if (ret) goto failed; - ret = pcmcia_request_configuration(link, &link->conf); + ret = pcmcia_enable_device(link); if (ret) goto failed; @@ -544,20 +538,18 @@ failed: static int fmvj18x_get_hwinfo(struct pcmcia_device *link, u_char *node_id) { - win_req_t req; u_char __iomem *base; int i, j; /* Allocate a small memory window */ - req.Attributes = WIN_DATA_WIDTH_8|WIN_MEMORY_TYPE_AM|WIN_ENABLE; - req.Base = 0; req.Size = 0; - req.AccessSpeed = 0; - i = pcmcia_request_window(link, &req, &link->win); + link->resource[2]->flags |= WIN_DATA_WIDTH_8|WIN_MEMORY_TYPE_AM|WIN_ENABLE; + link->resource[2]->start = 0; link->resource[2]->end = 0; + i = pcmcia_request_window(link, link->resource[2], 0); if (i != 0) return -1; - base = ioremap(req.Base, req.Size); - pcmcia_map_mem_page(link, link->win, 0); + base = ioremap(link->resource[2]->start, resource_size(link->resource[2])); + pcmcia_map_mem_page(link, link->resource[2], 0); /* * MBH10304 CISTPL_FUNCE_LAN_NODE_ID format @@ -582,7 +574,7 @@ static int fmvj18x_get_hwinfo(struct pcmcia_device *link, u_char *node_id) } iounmap(base); - j = pcmcia_release_window(link, link->win); + j = pcmcia_release_window(link, link->resource[2]); return (i != 0x200) ? 0 : -1; } /* fmvj18x_get_hwinfo */ @@ -590,27 +582,26 @@ static int fmvj18x_get_hwinfo(struct pcmcia_device *link, u_char *node_id) static int fmvj18x_setup_mfc(struct pcmcia_device *link) { - win_req_t req; int i; struct net_device *dev = link->priv; unsigned int ioaddr; local_info_t *lp = netdev_priv(dev); /* Allocate a small memory window */ - req.Attributes = WIN_DATA_WIDTH_8|WIN_MEMORY_TYPE_AM|WIN_ENABLE; - req.Base = 0; req.Size = 0; - req.AccessSpeed = 0; - i = pcmcia_request_window(link, &req, &link->win); + link->resource[3]->flags = WIN_DATA_WIDTH_8|WIN_MEMORY_TYPE_AM|WIN_ENABLE; + link->resource[3]->start = link->resource[3]->end = 0; + i = pcmcia_request_window(link, link->resource[3], 0); if (i != 0) return -1; - lp->base = ioremap(req.Base, req.Size); + lp->base = ioremap(link->resource[3]->start, + resource_size(link->resource[3])); if (lp->base == NULL) { printk(KERN_NOTICE "fmvj18x_cs: ioremap failed\n"); return -1; } - i = pcmcia_map_mem_page(link, link->win, 0); + i = pcmcia_map_mem_page(link, link->resource[3], 0); if (i != 0) { iounmap(lp->base); lp->base = NULL; @@ -638,7 +629,6 @@ static void fmvj18x_release(struct pcmcia_device *link) struct net_device *dev = link->priv; local_info_t *lp = netdev_priv(dev); u_char __iomem *tmp; - int j; dev_dbg(&link->dev, "fmvj18x_release\n"); @@ -646,7 +636,6 @@ static void fmvj18x_release(struct pcmcia_device *link) tmp = lp->base; lp->base = NULL; /* set NULL before iounmap */ iounmap(tmp); - j = pcmcia_release_window(link, link->win); } pcmcia_disable_device(link); @@ -708,9 +697,7 @@ MODULE_DEVICE_TABLE(pcmcia, fmvj18x_ids); static struct pcmcia_driver fmvj18x_cs_driver = { .owner = THIS_MODULE, - .drv = { - .name = "fmvj18x_cs", - }, + .name = "fmvj18x_cs", .probe = fmvj18x_probe, .remove = fmvj18x_detach, .id_table = fmvj18x_ids, diff --git a/drivers/net/pcmcia/ibmtr_cs.c b/drivers/net/pcmcia/ibmtr_cs.c index b0d06a3d962f..bf7dff96d881 100644 --- a/drivers/net/pcmcia/ibmtr_cs.c +++ b/drivers/net/pcmcia/ibmtr_cs.c @@ -57,7 +57,6 @@ #include <linux/trdevice.h> #include <linux/ibmtr.h> -#include <pcmcia/cs.h> #include <pcmcia/cistpl.h> #include <pcmcia/ds.h> @@ -102,9 +101,8 @@ static void ibmtr_detach(struct pcmcia_device *p_dev); typedef struct ibmtr_dev_t { struct pcmcia_device *p_dev; - struct net_device *dev; - window_handle_t sram_win_handle; - struct tok_info *ti; + struct net_device *dev; + struct tok_info *ti; } ibmtr_dev_t; static void netdev_get_drvinfo(struct net_device *dev, @@ -123,14 +121,6 @@ static irqreturn_t ibmtr_interrupt(int irq, void *dev_id) { return tok_interrupt(irq, dev); }; -/*====================================================================== - - ibmtr_attach() creates an "instance" of the driver, allocating - local data structures for one device. The device is registered - with Card Services. - -======================================================================*/ - static int __devinit ibmtr_attach(struct pcmcia_device *link) { ibmtr_dev_t *info; @@ -153,9 +143,8 @@ static int __devinit ibmtr_attach(struct pcmcia_device *link) link->resource[0]->flags |= IO_DATA_PATH_WIDTH_8; link->resource[0]->end = 4; - link->conf.Attributes = CONF_ENABLE_IRQ; - link->conf.IntType = INT_MEMORY_AND_IO; - link->conf.Present = PRESENT_OPTION; + link->config_flags |= CONF_ENABLE_IRQ; + link->config_regs = PRESENT_OPTION; info->dev = dev; @@ -164,15 +153,6 @@ static int __devinit ibmtr_attach(struct pcmcia_device *link) return ibmtr_config(link); } /* ibmtr_attach */ -/*====================================================================== - - This deletes a driver "instance". The device is de-registered - with Card Services. If it has been released, all local data - structures are freed. Otherwise, the structures will be freed - when the device is released. - -======================================================================*/ - static void ibmtr_detach(struct pcmcia_device *link) { struct ibmtr_dev_t *info = link->priv; @@ -197,26 +177,17 @@ static void ibmtr_detach(struct pcmcia_device *link) kfree(info); } /* ibmtr_detach */ -/*====================================================================== - - ibmtr_config() is scheduled to run after a CARD_INSERTION event - is received, to configure the PCMCIA socket, and to make the - token-ring device available to the system. - -======================================================================*/ - static int __devinit ibmtr_config(struct pcmcia_device *link) { ibmtr_dev_t *info = link->priv; struct net_device *dev = info->dev; struct tok_info *ti = netdev_priv(dev); - win_req_t req; int i, ret; dev_dbg(&link->dev, "ibmtr_config\n"); - link->conf.ConfigIndex = 0x61; link->io_lines = 16; + link->config_index = 0x61; /* Determine if this is PRIMARY or ALTERNATE. */ @@ -240,39 +211,39 @@ static int __devinit ibmtr_config(struct pcmcia_device *link) ti->global_int_enable=GLOBAL_INT_ENABLE+((dev->irq==9) ? 2 : dev->irq); /* Allocate the MMIO memory window */ - req.Attributes = WIN_DATA_WIDTH_16|WIN_MEMORY_TYPE_CM|WIN_ENABLE; - req.Attributes |= WIN_USE_WAIT; - req.Base = 0; - req.Size = 0x2000; - req.AccessSpeed = 250; - ret = pcmcia_request_window(link, &req, &link->win); + link->resource[2]->flags |= WIN_DATA_WIDTH_16|WIN_MEMORY_TYPE_CM|WIN_ENABLE; + link->resource[2]->flags |= WIN_USE_WAIT; + link->resource[2]->start = 0; + link->resource[2]->end = 0x2000; + ret = pcmcia_request_window(link, link->resource[2], 250); if (ret) goto failed; - ret = pcmcia_map_mem_page(link, link->win, mmiobase); + ret = pcmcia_map_mem_page(link, link->resource[2], mmiobase); if (ret) goto failed; - ti->mmio = ioremap(req.Base, req.Size); + ti->mmio = ioremap(link->resource[2]->start, + resource_size(link->resource[2])); /* Allocate the SRAM memory window */ - req.Attributes = WIN_DATA_WIDTH_16|WIN_MEMORY_TYPE_CM|WIN_ENABLE; - req.Attributes |= WIN_USE_WAIT; - req.Base = 0; - req.Size = sramsize * 1024; - req.AccessSpeed = 250; - ret = pcmcia_request_window(link, &req, &info->sram_win_handle); + link->resource[3]->flags = WIN_DATA_WIDTH_16|WIN_MEMORY_TYPE_CM|WIN_ENABLE; + link->resource[3]->flags |= WIN_USE_WAIT; + link->resource[3]->start = 0; + link->resource[3]->end = sramsize * 1024; + ret = pcmcia_request_window(link, link->resource[3], 250); if (ret) goto failed; - ret = pcmcia_map_mem_page(link, info->sram_win_handle, srambase); + ret = pcmcia_map_mem_page(link, link->resource[3], srambase); if (ret) goto failed; ti->sram_base = srambase >> 12; - ti->sram_virt = ioremap(req.Base, req.Size); - ti->sram_phys = req.Base; + ti->sram_virt = ioremap(link->resource[3]->start, + resource_size(link->resource[3])); + ti->sram_phys = link->resource[3]->start; - ret = pcmcia_request_configuration(link, &link->conf); + ret = pcmcia_enable_device(link); if (ret) goto failed; @@ -301,14 +272,6 @@ failed: return -ENODEV; } /* ibmtr_config */ -/*====================================================================== - - After a card is removed, ibmtr_release() will unregister the net - device, and release the PCMCIA configuration. If the device is - still open, this will be postponed until it is closed. - -======================================================================*/ - static void ibmtr_release(struct pcmcia_device *link) { ibmtr_dev_t *info = link->priv; @@ -316,7 +279,7 @@ static void ibmtr_release(struct pcmcia_device *link) dev_dbg(&link->dev, "ibmtr_release\n"); - if (link->win) { + if (link->resource[2]->end) { struct tok_info *ti = netdev_priv(dev); iounmap(ti->mmio); } @@ -398,9 +361,7 @@ MODULE_DEVICE_TABLE(pcmcia, ibmtr_ids); static struct pcmcia_driver ibmtr_cs_driver = { .owner = THIS_MODULE, - .drv = { - .name = "ibmtr_cs", - }, + .name = "ibmtr_cs", .probe = ibmtr_attach, .remove = ibmtr_detach, .id_table = ibmtr_ids, diff --git a/drivers/net/pcmcia/nmclan_cs.c b/drivers/net/pcmcia/nmclan_cs.c index 68f2deeb3ade..1eca4f5a6e78 100644 --- a/drivers/net/pcmcia/nmclan_cs.c +++ b/drivers/net/pcmcia/nmclan_cs.c @@ -146,7 +146,6 @@ Include Files #include <linux/ioport.h> #include <linux/bitops.h> -#include <pcmcia/cs.h> #include <pcmcia/cisreg.h> #include <pcmcia/cistpl.h> #include <pcmcia/ds.h> @@ -435,13 +434,6 @@ static const struct net_device_ops mace_netdev_ops = { .ndo_validate_addr = eth_validate_addr, }; -/* ---------------------------------------------------------------------------- -nmclan_attach - Creates an "instance" of the driver, allocating local data - structures for one device. The device is registered with Card - Services. ----------------------------------------------------------------------------- */ - static int nmclan_probe(struct pcmcia_device *link) { mace_private *lp; @@ -460,10 +452,9 @@ static int nmclan_probe(struct pcmcia_device *link) spin_lock_init(&lp->bank_lock); link->resource[0]->end = 32; link->resource[0]->flags |= IO_DATA_PATH_WIDTH_AUTO; - link->conf.Attributes = CONF_ENABLE_IRQ; - link->conf.IntType = INT_MEMORY_AND_IO; - link->conf.ConfigIndex = 1; - link->conf.Present = PRESENT_OPTION; + link->config_flags |= CONF_ENABLE_IRQ; + link->config_index = 1; + link->config_regs = PRESENT_OPTION; lp->tx_free_frames=AM2150_MAX_TX_FRAMES; @@ -474,14 +465,6 @@ static int nmclan_probe(struct pcmcia_device *link) return nmclan_config(link); } /* nmclan_attach */ -/* ---------------------------------------------------------------------------- -nmclan_detach - This deletes a driver "instance". The device is de-registered - with Card Services. If it has been released, all local data - structures are freed. Otherwise, the structures will be freed - when the device is released. ----------------------------------------------------------------------------- */ - static void nmclan_detach(struct pcmcia_device *link) { struct net_device *dev = link->priv; @@ -625,13 +608,6 @@ static int mace_init(mace_private *lp, unsigned int ioaddr, char *enet_addr) return 0; } /* mace_init */ -/* ---------------------------------------------------------------------------- -nmclan_config - This routine is scheduled to run after a CARD_INSERTION event - is received, to configure the PCMCIA socket, and to make the - ethernet device available to the system. ----------------------------------------------------------------------------- */ - static int nmclan_config(struct pcmcia_device *link) { struct net_device *dev = link->priv; @@ -650,7 +626,7 @@ static int nmclan_config(struct pcmcia_device *link) ret = pcmcia_request_exclusive_irq(link, mace_interrupt); if (ret) goto failed; - ret = pcmcia_request_configuration(link, &link->conf); + ret = pcmcia_enable_device(link); if (ret) goto failed; @@ -712,12 +688,6 @@ failed: return -ENODEV; } /* nmclan_config */ -/* ---------------------------------------------------------------------------- -nmclan_release - After a card is removed, nmclan_release() will unregister the - net device, and release the PCMCIA configuration. If the device - is still open, this will be postponed until it is closed. ----------------------------------------------------------------------------- */ static void nmclan_release(struct pcmcia_device *link) { dev_dbg(&link->dev, "nmclan_release\n"); @@ -1535,9 +1505,7 @@ MODULE_DEVICE_TABLE(pcmcia, nmclan_ids); static struct pcmcia_driver nmclan_cs_driver = { .owner = THIS_MODULE, - .drv = { - .name = "nmclan_cs", - }, + .name = "nmclan_cs", .probe = nmclan_probe, .remove = nmclan_detach, .id_table = nmclan_ids, diff --git a/drivers/net/pcmcia/pcnet_cs.c b/drivers/net/pcmcia/pcnet_cs.c index f9b509a6b09a..5d7d1d3088ae 100644 --- a/drivers/net/pcmcia/pcnet_cs.c +++ b/drivers/net/pcmcia/pcnet_cs.c @@ -42,7 +42,6 @@ #include <linux/mii.h> #include "../8390.h" -#include <pcmcia/cs.h> #include <pcmcia/cistpl.h> #include <pcmcia/ciscode.h> #include <pcmcia/ds.h> @@ -238,14 +237,6 @@ static const struct net_device_ops pcnet_netdev_ops = { #endif }; -/*====================================================================== - - pcnet_attach() creates an "instance" of the driver, allocating - local data structures for one device. The device is registered - with Card Services. - -======================================================================*/ - static int pcnet_probe(struct pcmcia_device *link) { pcnet_dev_t *info; @@ -260,23 +251,13 @@ static int pcnet_probe(struct pcmcia_device *link) info->p_dev = link; link->priv = dev; - link->conf.Attributes = CONF_ENABLE_IRQ; - link->conf.IntType = INT_MEMORY_AND_IO; + link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_IO; dev->netdev_ops = &pcnet_netdev_ops; return pcnet_config(link); } /* pcnet_attach */ -/*====================================================================== - - This deletes a driver "instance". The device is de-registered - with Card Services. If it has been released, all local data - structures are freed. Otherwise, the structures will be freed - when the device is released. - -======================================================================*/ - static void pcnet_detach(struct pcmcia_device *link) { struct net_device *dev = link->priv; @@ -300,22 +281,22 @@ static void pcnet_detach(struct pcmcia_device *link) static hw_info_t *get_hwinfo(struct pcmcia_device *link) { struct net_device *dev = link->priv; - win_req_t req; u_char __iomem *base, *virt; int i, j; /* Allocate a small memory window */ - req.Attributes = WIN_DATA_WIDTH_8|WIN_MEMORY_TYPE_AM|WIN_ENABLE; - req.Base = 0; req.Size = 0; - req.AccessSpeed = 0; - i = pcmcia_request_window(link, &req, &link->win); + link->resource[2]->flags |= WIN_DATA_WIDTH_8|WIN_MEMORY_TYPE_AM|WIN_ENABLE; + link->resource[2]->start = 0; link->resource[2]->end = 0; + i = pcmcia_request_window(link, link->resource[2], 0); if (i != 0) return NULL; - virt = ioremap(req.Base, req.Size); + virt = ioremap(link->resource[2]->start, + resource_size(link->resource[2])); for (i = 0; i < NR_INFO; i++) { - pcmcia_map_mem_page(link, link->win, hw_info[i].offset & ~(req.Size-1)); - base = &virt[hw_info[i].offset & (req.Size-1)]; + pcmcia_map_mem_page(link, link->resource[2], + hw_info[i].offset & ~(resource_size(link->resource[2])-1)); + base = &virt[hw_info[i].offset & (resource_size(link->resource[2])-1)]; if ((readb(base+0) == hw_info[i].a0) && (readb(base+2) == hw_info[i].a1) && (readb(base+4) == hw_info[i].a2)) { @@ -326,7 +307,7 @@ static hw_info_t *get_hwinfo(struct pcmcia_device *link) } iounmap(virt); - j = pcmcia_release_window(link, link->win); + j = pcmcia_release_window(link, link->resource[2]); return (i < NR_INFO) ? hw_info+i : NULL; } /* get_hwinfo */ @@ -421,7 +402,7 @@ static hw_info_t *get_ax88190(struct pcmcia_device *link) int i, j; /* Not much of a test, but the alternatives are messy */ - if (link->conf.ConfigBase != 0x03c0) + if (link->config_base != 0x03c0) return NULL; outb_p(0x01, ioaddr + EN0_DCFG); /* Set word-wide access. */ @@ -463,14 +444,6 @@ static hw_info_t *get_hwired(struct pcmcia_device *link) return &default_info; } /* get_hwired */ -/*====================================================================== - - pcnet_config() is scheduled to run after a CARD_INSERTION event - is received, to configure the PCMCIA socket, and to make the - ethernet device available to the system. - -======================================================================*/ - static int try_io_port(struct pcmcia_device *link) { int j, ret; @@ -502,43 +475,22 @@ static int try_io_port(struct pcmcia_device *link) } } -static int pcnet_confcheck(struct pcmcia_device *p_dev, - cistpl_cftable_entry_t *cfg, - cistpl_cftable_entry_t *dflt, - unsigned int vcc, - void *priv_data) +static int pcnet_confcheck(struct pcmcia_device *p_dev, void *priv_data) { int *priv = priv_data; int try = (*priv & 0x1); - int i; - cistpl_io_t *io = &cfg->io; - if (cfg->index == 0 || cfg->io.nwin == 0) - return -EINVAL; + *priv &= (p_dev->resource[2]->end >= 0x4000) ? 0x10 : ~0x10; - /* For multifunction cards, by convention, we configure the - network function with window 0, and serial with window 1 */ - if (io->nwin > 1) { - i = (io->win[1].len > io->win[0].len); - p_dev->resource[1]->start = io->win[1-i].base; - p_dev->resource[1]->end = io->win[1-i].len; - } else { - i = p_dev->resource[1]->end = 0; - } + if (p_dev->config_index == 0) + return -EINVAL; - *priv &= ((cfg->mem.nwin == 1) && - (cfg->mem.win[0].len >= 0x4000)) ? 0x10 : ~0x10; + if (p_dev->resource[0]->end + p_dev->resource[1]->end < 32) + return -EINVAL; - p_dev->resource[0]->start = io->win[i].base; - p_dev->resource[0]->end = io->win[i].len; - if (!try) - p_dev->io_lines = io->flags & CISTPL_IO_LINES_MASK; - else + if (try) p_dev->io_lines = 16; - if (p_dev->resource[0]->end + p_dev->resource[1]->end >= 32) - return try_io_port(p_dev); - - return -EINVAL; + return try_io_port(p_dev); } static hw_info_t *pcnet_try_config(struct pcmcia_device *link, @@ -560,15 +512,14 @@ static hw_info_t *pcnet_try_config(struct pcmcia_device *link, if (!link->irq) return NULL; - if (resource_size(link->resource[1]) == 8) { - link->conf.Attributes |= CONF_ENABLE_SPKR; - link->conf.Status = CCSR_AUDIO_ENA; - } + if (resource_size(link->resource[1]) == 8) + link->config_flags |= CONF_ENABLE_SPKR; + if ((link->manf_id == MANFID_IBM) && (link->card_id == PRODID_IBM_HOME_AND_AWAY)) - link->conf.ConfigIndex |= 0x10; + link->config_index |= 0x10; - ret = pcmcia_request_configuration(link, &link->conf); + ret = pcmcia_enable_device(link); if (ret) return NULL; @@ -583,7 +534,7 @@ static hw_info_t *pcnet_try_config(struct pcmcia_device *link, } else dev->if_port = 0; - if ((link->conf.ConfigBase == 0x03c0) && + if ((link->config_base == 0x03c0) && (link->manf_id == 0x149) && (link->card_id == 0xc1ab)) { dev_info(&link->dev, "this is an AX88190 card - use axnet_cs instead.\n"); @@ -689,14 +640,6 @@ failed: return -ENODEV; } /* pcnet_config */ -/*====================================================================== - - After a card is removed, pcnet_release() will unregister the net - device, and release the PCMCIA configuration. If the device is - still open, this will be postponed until it is closed. - -======================================================================*/ - static void pcnet_release(struct pcmcia_device *link) { pcnet_dev_t *info = PRIV(link->priv); @@ -709,15 +652,6 @@ static void pcnet_release(struct pcmcia_device *link) pcmcia_disable_device(link); } -/*====================================================================== - - The card status event handler. Mostly, this schedules other - stuff to run after an event is received. A CARD_REMOVAL event - also sets some flags to discourage the net drivers from trying - to talk to the card any more. - -======================================================================*/ - static int pcnet_suspend(struct pcmcia_device *link) { struct net_device *dev = link->priv; @@ -1486,7 +1420,6 @@ static int setup_shmem_window(struct pcmcia_device *link, int start_pg, { struct net_device *dev = link->priv; pcnet_dev_t *info = PRIV(dev); - win_req_t req; int i, window_size, offset, ret; window_size = (stop_pg - start_pg) << 8; @@ -1497,22 +1430,22 @@ static int setup_shmem_window(struct pcmcia_device *link, int start_pg, window_size = roundup_pow_of_two(window_size); /* Allocate a memory window */ - req.Attributes = WIN_DATA_WIDTH_16|WIN_MEMORY_TYPE_CM|WIN_ENABLE; - req.Attributes |= WIN_USE_WAIT; - req.Base = 0; req.Size = window_size; - req.AccessSpeed = mem_speed; - ret = pcmcia_request_window(link, &req, &link->win); + link->resource[3]->flags |= WIN_DATA_WIDTH_16|WIN_MEMORY_TYPE_CM|WIN_ENABLE; + link->resource[3]->flags |= WIN_USE_WAIT; + link->resource[3]->start = 0; link->resource[3]->end = window_size; + ret = pcmcia_request_window(link, link->resource[3], mem_speed); if (ret) goto failed; offset = (start_pg << 8) + cm_offset; offset -= offset % window_size; - ret = pcmcia_map_mem_page(link, link->win, offset); + ret = pcmcia_map_mem_page(link, link->resource[3], offset); if (ret) goto failed; /* Try scribbling on the buffer */ - info->base = ioremap(req.Base, window_size); + info->base = ioremap(link->resource[3]->start, + resource_size(link->resource[3])); for (i = 0; i < (TX_PAGES<<8); i += 2) __raw_writew((i>>1), info->base+offset+i); udelay(100); @@ -1521,19 +1454,20 @@ static int setup_shmem_window(struct pcmcia_device *link, int start_pg, pcnet_reset_8390(dev); if (i != (TX_PAGES<<8)) { iounmap(info->base); - pcmcia_release_window(link, link->win); - info->base = NULL; link->win = 0; + pcmcia_release_window(link, link->resource[3]); + info->base = NULL; goto failed; } ei_status.mem = info->base + offset; - ei_status.priv = req.Size; + ei_status.priv = resource_size(link->resource[3]); dev->mem_start = (u_long)ei_status.mem; - dev->mem_end = dev->mem_start + req.Size; + dev->mem_end = dev->mem_start + resource_size(link->resource[3]); ei_status.tx_start_page = start_pg; ei_status.rx_start_page = start_pg + TX_PAGES; - ei_status.stop_page = start_pg + ((req.Size - offset) >> 8); + ei_status.stop_page = start_pg + ( + (resource_size(link->resource[3]) - offset) >> 8); /* set up block i/o functions */ ei_status.get_8390_hdr = &shmem_get_8390_hdr; @@ -1772,9 +1706,7 @@ MODULE_FIRMWARE("cis/PE-200.cis"); MODULE_FIRMWARE("cis/tamarack.cis"); static struct pcmcia_driver pcnet_driver = { - .drv = { - .name = "pcnet_cs", - }, + .name = "pcnet_cs", .probe = pcnet_probe, .remove = pcnet_detach, .owner = THIS_MODULE, diff --git a/drivers/net/pcmcia/smc91c92_cs.c b/drivers/net/pcmcia/smc91c92_cs.c index 377367d03b41..0af2fc8ec164 100644 --- a/drivers/net/pcmcia/smc91c92_cs.c +++ b/drivers/net/pcmcia/smc91c92_cs.c @@ -44,7 +44,6 @@ #include <linux/jiffies.h> #include <linux/firmware.h> -#include <pcmcia/cs.h> #include <pcmcia/cistpl.h> #include <pcmcia/cisreg.h> #include <pcmcia/ciscode.h> @@ -300,14 +299,6 @@ static const struct net_device_ops smc_netdev_ops = { .ndo_validate_addr = eth_validate_addr, }; -/*====================================================================== - - smc91c92_attach() creates an "instance" of the driver, allocating - local data structures for one device. The device is registered - with Card Services. - -======================================================================*/ - static int smc91c92_probe(struct pcmcia_device *link) { struct smc_private *smc; @@ -324,10 +315,6 @@ static int smc91c92_probe(struct pcmcia_device *link) link->priv = dev; spin_lock_init(&smc->lock); - link->resource[0]->end = 16; - link->resource[0]->flags |= IO_DATA_PATH_WIDTH_AUTO; - link->conf.Attributes = CONF_ENABLE_IRQ; - link->conf.IntType = INT_MEMORY_AND_IO; /* The SMC91c92-specific entries in the device structure. */ dev->netdev_ops = &smc_netdev_ops; @@ -343,15 +330,6 @@ static int smc91c92_probe(struct pcmcia_device *link) return smc91c92_config(link); } /* smc91c92_attach */ -/*====================================================================== - - This deletes a driver "instance". The device is de-registered - with Card Services. If it has been released, all local data - structures are freed. Otherwise, the structures will be freed - when the device is released. - -======================================================================*/ - static void smc91c92_detach(struct pcmcia_device *link) { struct net_device *dev = link->priv; @@ -412,26 +390,28 @@ static int mhz_3288_power(struct pcmcia_device *link) mdelay(200); /* Now read and write the COR... */ - tmp = readb(smc->base + link->conf.ConfigBase + CISREG_COR); + tmp = readb(smc->base + link->config_base + CISREG_COR); udelay(5); - writeb(tmp, smc->base + link->conf.ConfigBase + CISREG_COR); + writeb(tmp, smc->base + link->config_base + CISREG_COR); return 0; } -static int mhz_mfc_config_check(struct pcmcia_device *p_dev, - cistpl_cftable_entry_t *cf, - cistpl_cftable_entry_t *dflt, - unsigned int vcc, - void *priv_data) +static int mhz_mfc_config_check(struct pcmcia_device *p_dev, void *priv_data) { int k; - p_dev->resource[1]->start = cf->io.win[0].base; + p_dev->io_lines = 16; + p_dev->resource[1]->start = p_dev->resource[0]->start; + p_dev->resource[1]->end = 8; + p_dev->resource[1]->flags &= ~IO_DATA_PATH_WIDTH; + p_dev->resource[1]->flags |= IO_DATA_PATH_WIDTH_8; + p_dev->resource[0]->end = 16; + p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH; + p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_AUTO; for (k = 0; k < 0x400; k += 0x10) { if (k & 0x80) continue; p_dev->resource[0]->start = k ^ 0x300; - p_dev->io_lines = 16; if (!pcmcia_request_io(p_dev)) return 0; } @@ -442,14 +422,11 @@ static int mhz_mfc_config(struct pcmcia_device *link) { struct net_device *dev = link->priv; struct smc_private *smc = netdev_priv(dev); - win_req_t req; unsigned int offset; int i; - link->conf.Attributes |= CONF_ENABLE_SPKR; - link->conf.Status = CCSR_AUDIO_ENA; - link->resource[1]->flags |= IO_DATA_PATH_WIDTH_8; - link->resource[1]->end = 8; + link->config_flags |= CONF_ENABLE_SPKR | CONF_ENABLE_IRQ | + CONF_AUTO_SET_IO; /* The Megahertz combo cards have modem-like CIS entries, so we have to explicitly try a bunch of port combinations. */ @@ -459,16 +436,16 @@ static int mhz_mfc_config(struct pcmcia_device *link) dev->base_addr = link->resource[0]->start; /* Allocate a memory window, for accessing the ISR */ - req.Attributes = WIN_DATA_WIDTH_8|WIN_MEMORY_TYPE_AM|WIN_ENABLE; - req.Base = req.Size = 0; - req.AccessSpeed = 0; - i = pcmcia_request_window(link, &req, &link->win); + link->resource[2]->flags = WIN_DATA_WIDTH_8|WIN_MEMORY_TYPE_AM|WIN_ENABLE; + link->resource[2]->start = link->resource[2]->end = 0; + i = pcmcia_request_window(link, link->resource[2], 0); if (i != 0) return -ENODEV; - smc->base = ioremap(req.Base, req.Size); - offset = (smc->manfid == MANFID_MOTOROLA) ? link->conf.ConfigBase : 0; - i = pcmcia_map_mem_page(link, link->win, offset); + smc->base = ioremap(link->resource[2]->start, + resource_size(link->resource[2])); + offset = (smc->manfid == MANFID_MOTOROLA) ? link->config_base : 0; + i = pcmcia_map_mem_page(link, link->resource[2], offset); if ((i == 0) && (smc->manfid == MANFID_MEGAHERTZ) && (smc->cardid == PRODID_MEGAHERTZ_EM3288)) @@ -591,14 +568,12 @@ static int mot_setup(struct pcmcia_device *link) /*====================================================================*/ -static int smc_configcheck(struct pcmcia_device *p_dev, - cistpl_cftable_entry_t *cf, - cistpl_cftable_entry_t *dflt, - unsigned int vcc, - void *priv_data) +static int smc_configcheck(struct pcmcia_device *p_dev, void *priv_data) { - p_dev->resource[0]->start = cf->io.win[0].base; - p_dev->io_lines = cf->io.flags & CISTPL_IO_LINES_MASK; + p_dev->resource[0]->end = 16; + p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH; + p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_AUTO; + return pcmcia_request_io(p_dev); } @@ -607,7 +582,8 @@ static int smc_config(struct pcmcia_device *link) struct net_device *dev = link->priv; int i; - link->resource[0]->end = 16; + link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_IO; + i = pcmcia_loop_config(link, smc_configcheck, NULL); if (!i) dev->base_addr = link->resource[0]->start; @@ -640,15 +616,14 @@ static int osi_config(struct pcmcia_device *link) static const unsigned int com[4] = { 0x3f8, 0x2f8, 0x3e8, 0x2e8 }; int i, j; - link->conf.Attributes |= CONF_ENABLE_SPKR; - link->conf.Status = CCSR_AUDIO_ENA; + link->config_flags |= CONF_ENABLE_SPKR | CONF_ENABLE_IRQ; link->resource[0]->end = 64; link->resource[1]->flags |= IO_DATA_PATH_WIDTH_8; link->resource[1]->end = 8; /* Enable Hard Decode, LAN, Modem */ - link->conf.ConfigIndex = 0x23; link->io_lines = 16; + link->config_index = 0x23; for (i = j = 0; j < 4; j++) { link->resource[1]->start = com[j]; @@ -658,7 +633,7 @@ static int osi_config(struct pcmcia_device *link) } if (i != 0) { /* Fallback: turn off hard decode */ - link->conf.ConfigIndex = 0x03; + link->config_index = 0x03; link->resource[1]->end = 0; i = pcmcia_request_io(link); } @@ -817,27 +792,16 @@ static int check_sig(struct pcmcia_device *link) } if (width) { - modconf_t mod = { - .Attributes = CONF_IO_CHANGE_WIDTH, - }; printk(KERN_INFO "smc91c92_cs: using 8-bit IO window.\n"); smc91c92_suspend(link); - pcmcia_modify_configuration(link, &mod); + pcmcia_fixup_iowidth(link); smc91c92_resume(link); return check_sig(link); } return -ENODEV; } -/*====================================================================== - - smc91c92_config() is scheduled to run after a CARD_INSERTION event - is received, to configure the PCMCIA socket, and to make the - ethernet device available to the system. - -======================================================================*/ - static int smc91c92_config(struct pcmcia_device *link) { struct net_device *dev = link->priv; @@ -869,7 +833,7 @@ static int smc91c92_config(struct pcmcia_device *link) i = pcmcia_request_irq(link, smc_interrupt); if (i) goto config_failed; - i = pcmcia_request_configuration(link, &link->conf); + i = pcmcia_enable_device(link); if (i) goto config_failed; @@ -988,18 +952,10 @@ config_failed: return -ENODEV; } /* smc91c92_config */ -/*====================================================================== - - After a card is removed, smc91c92_release() will unregister the net - device, and release the PCMCIA configuration. If the device is - still open, this will be postponed until it is closed. - -======================================================================*/ - static void smc91c92_release(struct pcmcia_device *link) { dev_dbg(&link->dev, "smc91c92_release\n"); - if (link->win) { + if (link->resource[2]->end) { struct net_device *dev = link->priv; struct smc_private *smc = netdev_priv(dev); iounmap(smc->base); @@ -2101,9 +2057,7 @@ MODULE_DEVICE_TABLE(pcmcia, smc91c92_ids); static struct pcmcia_driver smc91c92_cs_driver = { .owner = THIS_MODULE, - .drv = { - .name = "smc91c92_cs", - }, + .name = "smc91c92_cs", .probe = smc91c92_probe, .remove = smc91c92_detach, .id_table = smc91c92_ids, diff --git a/drivers/net/pcmcia/xirc2ps_cs.c b/drivers/net/pcmcia/xirc2ps_cs.c index f5819526b5ee..1fece617c069 100644 --- a/drivers/net/pcmcia/xirc2ps_cs.c +++ b/drivers/net/pcmcia/xirc2ps_cs.c @@ -82,7 +82,6 @@ #include <linux/bitops.h> #include <linux/mii.h> -#include <pcmcia/cs.h> #include <pcmcia/cistpl.h> #include <pcmcia/cisreg.h> #include <pcmcia/ciscode.h> @@ -267,33 +266,11 @@ static unsigned mii_rd(unsigned int ioaddr, u_char phyaddr, u_char phyreg); static void mii_wr(unsigned int ioaddr, u_char phyaddr, u_char phyreg, unsigned data, int len); -/* - * The event() function is this driver's Card Services event handler. - * It will be called by Card Services when an appropriate card status - * event is received. The config() and release() entry points are - * used to configure or release a socket, in response to card insertion - * and ejection events. They are invoked from the event handler. - */ - static int has_ce2_string(struct pcmcia_device * link); static int xirc2ps_config(struct pcmcia_device * link); static void xirc2ps_release(struct pcmcia_device * link); - -/**************** - * The attach() and detach() entry points are used to create and destroy - * "instances" of the driver, where each instance represents everything - * needed to manage one actual PCMCIA card. - */ - static void xirc2ps_detach(struct pcmcia_device *p_dev); -/**************** - * You'll also need to prototype all the functions that will actually - * be used to talk to your device. See 'pcmem_cs' for a good example - * of a fully self-sufficient driver; the other drivers rely more or - * less on other parts of the kernel. - */ - static irqreturn_t xirc2ps_interrupt(int irq, void *dev_id); typedef struct local_info_t { @@ -501,16 +478,6 @@ static const struct net_device_ops netdev_ops = { .ndo_validate_addr = eth_validate_addr, }; -/**************** - * xirc2ps_attach() creates an "instance" of the driver, allocating - * local data structures for one device. The device is registered - * with Card Services. - * - * The dev_link structure is initialized, but we don't actually - * configure the card at this point -- we wait until we receive a - * card insertion event. - */ - static int xirc2ps_probe(struct pcmcia_device *link) { @@ -529,9 +496,7 @@ xirc2ps_probe(struct pcmcia_device *link) link->priv = dev; /* General socket configuration */ - link->conf.Attributes = CONF_ENABLE_IRQ; - link->conf.IntType = INT_MEMORY_AND_IO; - link->conf.ConfigIndex = 1; + link->config_index = 1; /* Fill in card specific entries */ dev->netdev_ops = &netdev_ops; @@ -542,13 +507,6 @@ xirc2ps_probe(struct pcmcia_device *link) return xirc2ps_config(link); } /* xirc2ps_attach */ -/**************** - * This deletes a driver "instance". The device is de-registered - * with Card Services. If it has been released, all local data - * structures are freed. Otherwise, the structures will be freed - * when the device is released. - */ - static void xirc2ps_detach(struct pcmcia_device *link) { @@ -667,44 +625,53 @@ has_ce2_string(struct pcmcia_device * p_dev) } static int -xirc2ps_config_modem(struct pcmcia_device *p_dev, - cistpl_cftable_entry_t *cf, - cistpl_cftable_entry_t *dflt, - unsigned int vcc, - void *priv_data) +xirc2ps_config_modem(struct pcmcia_device *p_dev, void *priv_data) { unsigned int ioaddr; - if (cf->io.nwin > 0 && (cf->io.win[0].base & 0xf) == 8) { - for (ioaddr = 0x300; ioaddr < 0x400; ioaddr += 0x10) { - p_dev->resource[1]->start = cf->io.win[0].base; - p_dev->resource[0]->start = ioaddr; - if (!pcmcia_request_io(p_dev)) - return 0; - } + if ((p_dev->resource[0]->start & 0xf) == 8) + return -ENODEV; + + p_dev->resource[0]->end = 16; + p_dev->resource[1]->end = 8; + p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH; + p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_16; + p_dev->resource[1]->flags &= ~IO_DATA_PATH_WIDTH; + p_dev->resource[1]->flags |= IO_DATA_PATH_WIDTH_8; + p_dev->io_lines = 10; + + p_dev->resource[1]->start = p_dev->resource[0]->start; + for (ioaddr = 0x300; ioaddr < 0x400; ioaddr += 0x10) { + p_dev->resource[0]->start = ioaddr; + if (!pcmcia_request_io(p_dev)) + return 0; } return -ENODEV; } static int -xirc2ps_config_check(struct pcmcia_device *p_dev, - cistpl_cftable_entry_t *cf, - cistpl_cftable_entry_t *dflt, - unsigned int vcc, - void *priv_data) +xirc2ps_config_check(struct pcmcia_device *p_dev, void *priv_data) { int *pass = priv_data; + resource_size_t tmp = p_dev->resource[1]->start; - if (cf->io.nwin > 0 && (cf->io.win[0].base & 0xf) == 8) { - p_dev->resource[1]->start = cf->io.win[0].base; - p_dev->resource[0]->start = p_dev->resource[1]->start - + (*pass ? (cf->index & 0x20 ? -24:8) - : (cf->index & 0x20 ? 8:-24)); - if (!pcmcia_request_io(p_dev)) - return 0; - } - return -ENODEV; + tmp += (*pass ? (p_dev->config_index & 0x20 ? -24 : 8) + : (p_dev->config_index & 0x20 ? 8 : -24)); + + if ((p_dev->resource[0]->start & 0xf) == 8) + return -ENODEV; + + p_dev->resource[0]->end = 18; + p_dev->resource[1]->end = 8; + p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH; + p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_16; + p_dev->resource[1]->flags &= ~IO_DATA_PATH_WIDTH; + p_dev->resource[1]->flags |= IO_DATA_PATH_WIDTH_8; + p_dev->io_lines = 10; + p_dev->resource[1]->start = p_dev->resource[0]->start; + p_dev->resource[0]->start = tmp; + return pcmcia_request_io(p_dev); } @@ -727,11 +694,6 @@ static int pcmcia_get_mac_ce(struct pcmcia_device *p_dev, }; -/**************** - * xirc2ps_config() is scheduled to run after a CARD_INSERTION event - * is received, to configure the PCMCIA socket, and to make the - * ethernet device available to the system. - */ static int xirc2ps_config(struct pcmcia_device * link) { @@ -807,32 +769,24 @@ xirc2ps_config(struct pcmcia_device * link) goto failure; } - link->resource[0]->flags |= IO_DATA_PATH_WIDTH_16; - link->io_lines = 10; if (local->modem) { int pass; + link->config_flags |= CONF_AUTO_SET_IO; - if (do_sound) { - link->conf.Attributes |= CONF_ENABLE_SPKR; - link->conf.Status |= CCSR_AUDIO_ENA; - } - link->resource[1]->end = 8; - link->resource[1]->flags |= IO_DATA_PATH_WIDTH_8; if (local->dingo) { /* Take the Modem IO port from the CIS and scan for a free * Ethernet port */ - link->resource[0]->end = 16; /* no Mako stuff anymore */ if (!pcmcia_loop_config(link, xirc2ps_config_modem, NULL)) goto port_found; } else { - link->resource[0]->end = 18; /* We do 2 passes here: The first one uses the regular mapping and * the second tries again, thereby considering that the 32 ports are * mirrored every 32 bytes. Actually we use a mirrored port for * the Mako if (on the first pass) the COR bit 5 is set. */ for (pass=0; pass < 2; pass++) - if (!pcmcia_loop_config(link, xirc2ps_config_check, &pass)) + if (!pcmcia_loop_config(link, xirc2ps_config_check, + &pass)) goto port_found; /* if special option: * try to configure as Ethernet only. @@ -840,7 +794,9 @@ xirc2ps_config(struct pcmcia_device * link) } printk(KNOT_XIRC "no ports available\n"); } else { + link->io_lines = 10; link->resource[0]->end = 16; + link->resource[0]->flags |= IO_DATA_PATH_WIDTH_16; for (ioaddr = 0x300; ioaddr < 0x400; ioaddr += 0x10) { link->resource[0]->start = ioaddr; if (!(err = pcmcia_request_io(link))) @@ -861,16 +817,14 @@ xirc2ps_config(struct pcmcia_device * link) if ((err=pcmcia_request_irq(link, xirc2ps_interrupt))) goto config_error; - /**************** - * This actually configures the PCMCIA socket -- setting up - * the I/O windows and the interrupt mapping. - */ - if ((err=pcmcia_request_configuration(link, &link->conf))) + link->config_flags |= CONF_ENABLE_IRQ; + if (do_sound) + link->config_flags |= CONF_ENABLE_SPKR; + + if ((err = pcmcia_enable_device(link))) goto config_error; if (local->dingo) { - win_req_t req; - /* Reset the modem's BAR to the correct value * This is necessary because in the RequestConfiguration call, * the base address of the ethernet port (BasePort1) is written @@ -890,14 +844,14 @@ xirc2ps_config(struct pcmcia_device * link) * is at 0x0800. So we allocate a window into the attribute * memory and write direct to the CIS registers */ - req.Attributes = WIN_DATA_WIDTH_8|WIN_MEMORY_TYPE_AM|WIN_ENABLE; - req.Base = req.Size = 0; - req.AccessSpeed = 0; - if ((err = pcmcia_request_window(link, &req, &link->win))) + link->resource[2]->flags = WIN_DATA_WIDTH_8 | WIN_MEMORY_TYPE_AM | + WIN_ENABLE; + link->resource[2]->start = link->resource[2]->end = 0; + if ((err = pcmcia_request_window(link, link->resource[2], 0))) goto config_error; - local->dingo_ccr = ioremap(req.Base,0x1000) + 0x0800; - if ((err = pcmcia_map_mem_page(link, link->win, 0))) + local->dingo_ccr = ioremap(link->resource[2]->start, 0x1000) + 0x0800; + if ((err = pcmcia_map_mem_page(link, link->resource[2], 0))) goto config_error; /* Setup the CCRs; there are no infos in the CIS about the Ethernet @@ -978,17 +932,12 @@ xirc2ps_config(struct pcmcia_device * link) return -ENODEV; } /* xirc2ps_config */ -/**************** - * After a card is removed, xirc2ps_release() will unregister the net - * device, and release the PCMCIA configuration. If the device is - * still open, this will be postponed until it is closed. - */ static void xirc2ps_release(struct pcmcia_device *link) { dev_dbg(&link->dev, "release\n"); - if (link->win) { + if (link->resource[2]->end) { struct net_device *dev = link->priv; local_info_t *local = netdev_priv(dev); if (local->dingo) @@ -1830,9 +1779,7 @@ MODULE_DEVICE_TABLE(pcmcia, xirc2ps_ids); static struct pcmcia_driver xirc2ps_cs_driver = { .owner = THIS_MODULE, - .drv = { - .name = "xirc2ps_cs", - }, + .name = "xirc2ps_cs", .probe = xirc2ps_probe, .remove = xirc2ps_detach, .id_table = xirc2ps_ids, diff --git a/drivers/net/ppp_async.c b/drivers/net/ppp_async.c index af50a530daee..78d70a6481bf 100644 --- a/drivers/net/ppp_async.c +++ b/drivers/net/ppp_async.c @@ -184,7 +184,7 @@ ppp_asynctty_open(struct tty_struct *tty) tasklet_init(&ap->tsk, ppp_async_process, (unsigned long) ap); atomic_set(&ap->refcnt, 1); - init_MUTEX_LOCKED(&ap->dead_sem); + sema_init(&ap->dead_sem, 0); ap->chan.private = ap; ap->chan.ops = &async_ops; diff --git a/drivers/net/smc91x.c b/drivers/net/smc91x.c index 10cf0cbc2185..726df611ee17 100644 --- a/drivers/net/smc91x.c +++ b/drivers/net/smc91x.c @@ -72,6 +72,7 @@ static const char version[] = #include <linux/sched.h> #include <linux/delay.h> #include <linux/interrupt.h> +#include <linux/irq.h> #include <linux/errno.h> #include <linux/ioport.h> #include <linux/crc32.h> diff --git a/drivers/net/wan/cosa.c b/drivers/net/wan/cosa.c index 04c6cd4333f1..10bafd59f9c3 100644 --- a/drivers/net/wan/cosa.c +++ b/drivers/net/wan/cosa.c @@ -575,7 +575,7 @@ static int cosa_probe(int base, int irq, int dma) /* Initialize the chardev data structures */ mutex_init(&chan->rlock); - init_MUTEX(&chan->wsem); + sema_init(&chan->wsem, 1); /* Register the network interface */ if (!(chan->netdev = alloc_hdlcdev(chan))) { diff --git a/drivers/net/wireless/airo_cs.c b/drivers/net/wireless/airo_cs.c index 9a121a5b787c..df2484d45474 100644 --- a/drivers/net/wireless/airo_cs.c +++ b/drivers/net/wireless/airo_cs.c @@ -32,7 +32,6 @@ #include <linux/timer.h> #include <linux/netdevice.h> -#include <pcmcia/cs.h> #include <pcmcia/cistpl.h> #include <pcmcia/cisreg.h> #include <pcmcia/ds.h> @@ -54,58 +53,21 @@ MODULE_SUPPORTED_DEVICE("Aironet 4500, 4800 and Cisco 340 PCMCIA cards"); /*====================================================================*/ -/* - The event() function is this driver's Card Services event handler. - It will be called by Card Services when an appropriate card status - event is received. The config() and release() entry points are - used to configure or release a socket, in response to card - insertion and ejection events. They are invoked from the airo_cs - event handler. -*/ - static int airo_config(struct pcmcia_device *link); static void airo_release(struct pcmcia_device *link); -/* - The attach() and detach() entry points are used to create and destroy - "instances" of the driver, where each instance represents everything - needed to manage one actual PCMCIA card. -*/ - static void airo_detach(struct pcmcia_device *p_dev); typedef struct local_info_t { struct net_device *eth_dev; } local_info_t; -/*====================================================================== - - airo_attach() creates an "instance" of the driver, allocating - local data structures for one device. The device is registered - with Card Services. - - The dev_link structure is initialized, but we don't actually - configure the card at this point -- we wait until we receive a - card insertion event. - - ======================================================================*/ - static int airo_probe(struct pcmcia_device *p_dev) { local_info_t *local; dev_dbg(&p_dev->dev, "airo_attach()\n"); - /* - General socket configuration defaults can go here. In this - client, we assume very little, and rely on the CIS for almost - everything. In most clients, many details (i.e., number, sizes, - and attributes of IO windows) are fixed by the nature of the - device, and can be hard-wired here. - */ - p_dev->conf.Attributes = 0; - p_dev->conf.IntType = INT_MEMORY_AND_IO; - /* Allocate space for private device-specific data */ local = kzalloc(sizeof(local_info_t), GFP_KERNEL); if (!local) { @@ -117,15 +79,6 @@ static int airo_probe(struct pcmcia_device *p_dev) return airo_config(p_dev); } /* airo_attach */ -/*====================================================================== - - This deletes a driver "instance". The device is de-registered - with Card Services. If it has been released, all local data - structures are freed. Otherwise, the structures will be freed - when the device is released. - - ======================================================================*/ - static void airo_detach(struct pcmcia_device *link) { dev_dbg(&link->dev, "airo_detach\n"); @@ -140,60 +93,12 @@ static void airo_detach(struct pcmcia_device *link) kfree(link->priv); } /* airo_detach */ -/*====================================================================== - - airo_config() is scheduled to run after a CARD_INSERTION event - is received, to configure the PCMCIA socket, and to make the - device available to the system. - - ======================================================================*/ - -static int airo_cs_config_check(struct pcmcia_device *p_dev, - cistpl_cftable_entry_t *cfg, - cistpl_cftable_entry_t *dflt, - unsigned int vcc, - void *priv_data) +static int airo_cs_config_check(struct pcmcia_device *p_dev, void *priv_data) { - if (cfg->index == 0) - return -ENODEV; - - /* Does this card need audio output? */ - if (cfg->flags & CISTPL_CFTABLE_AUDIO) { - p_dev->conf.Attributes |= CONF_ENABLE_SPKR; - p_dev->conf.Status = CCSR_AUDIO_ENA; - } - - /* Use power settings for Vcc and Vpp if present */ - /* Note that the CIS values need to be rescaled */ - if (cfg->vpp1.present & (1<<CISTPL_POWER_VNOM)) - p_dev->conf.Vpp = cfg->vpp1.param[CISTPL_POWER_VNOM]/10000; - else if (dflt->vpp1.present & (1<<CISTPL_POWER_VNOM)) - p_dev->conf.Vpp = dflt->vpp1.param[CISTPL_POWER_VNOM]/10000; - - p_dev->conf.Attributes |= CONF_ENABLE_IRQ; - - /* IO window settings */ - p_dev->resource[0]->end = p_dev->resource[1]->end = 0; - if ((cfg->io.nwin > 0) || (dflt->io.nwin > 0)) { - cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &dflt->io; - p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH; - p_dev->resource[0]->flags |= - pcmcia_io_cfg_data_width(io->flags); - p_dev->resource[0]->start = io->win[0].base; - p_dev->resource[0]->end = io->win[0].len; - if (io->nwin > 1) { - p_dev->resource[1]->flags = p_dev->resource[0]->flags; - p_dev->resource[1]->start = io->win[1].base; - p_dev->resource[1]->end = io->win[1].len; - } - } + if (p_dev->config_index == 0) + return -EINVAL; - /* This reserves IO space but doesn't actually enable it */ - if (pcmcia_request_io(p_dev) != 0) - return -ENODEV; - - /* If we got this far, we're cool! */ - return 0; + return pcmcia_request_io(p_dev); } @@ -206,20 +111,9 @@ static int airo_config(struct pcmcia_device *link) dev_dbg(&link->dev, "airo_config\n"); - /* - * In this loop, we scan the CIS for configuration table - * entries, each of which describes a valid card - * configuration, including voltage, IO window, memory window, - * and interrupt settings. - * - * We make no assumptions about the card to be configured: we - * use just the information available in the CIS. In an ideal - * world, this would work for any PCMCIA card, but it requires - * a complete and accurate CIS. In practice, a driver usually - * "knows" most of these things without consulting the CIS, - * and most client drivers will only use the CIS to fill in - * implementation-defined details. - */ + link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_VPP | + CONF_AUTO_AUDIO | CONF_AUTO_SET_IO; + ret = pcmcia_loop_config(link, airo_cs_config_check, NULL); if (ret) goto failed; @@ -227,12 +121,7 @@ static int airo_config(struct pcmcia_device *link) if (!link->irq) goto failed; - /* - This actually configures the PCMCIA socket -- setting up - the I/O windows and the interrupt mapping, and putting the - card and host interface into "Memory and IO" mode. - */ - ret = pcmcia_request_configuration(link, &link->conf); + ret = pcmcia_enable_device(link); if (ret) goto failed; ((local_info_t *)link->priv)->eth_dev = @@ -241,17 +130,6 @@ static int airo_config(struct pcmcia_device *link) if (!((local_info_t *)link->priv)->eth_dev) goto failed; - /* Finally, report what we've done */ - dev_info(&link->dev, "index 0x%02x: ", - link->conf.ConfigIndex); - if (link->conf.Vpp) - printk(", Vpp %d.%d", link->conf.Vpp/10, link->conf.Vpp%10); - printk(", irq %d", link->irq); - if (link->resource[0]) - printk(" & %pR", link->resource[0]); - if (link->resource[1]) - printk(" & %pR", link->resource[1]); - printk("\n"); return 0; failed: @@ -259,14 +137,6 @@ static int airo_config(struct pcmcia_device *link) return -ENODEV; } /* airo_config */ -/*====================================================================== - - After a card is removed, airo_release() will unregister the - device, and release the PCMCIA configuration. If the device is - still open, this will be postponed until it is closed. - - ======================================================================*/ - static void airo_release(struct pcmcia_device *link) { dev_dbg(&link->dev, "airo_release\n"); @@ -305,9 +175,7 @@ MODULE_DEVICE_TABLE(pcmcia, airo_ids); static struct pcmcia_driver airo_driver = { .owner = THIS_MODULE, - .drv = { - .name = "airo_cs", - }, + .name = "airo_cs", .probe = airo_probe, .remove = airo_detach, .id_table = airo_ids, @@ -315,12 +183,12 @@ static struct pcmcia_driver airo_driver = { .resume = airo_resume, }; -static int airo_cs_init(void) +static int __init airo_cs_init(void) { return pcmcia_register_driver(&airo_driver); } -static void airo_cs_cleanup(void) +static void __exit airo_cs_cleanup(void) { pcmcia_unregister_driver(&airo_driver); } diff --git a/drivers/net/wireless/atmel_cs.c b/drivers/net/wireless/atmel_cs.c index 3b632161c106..c96e19da2949 100644 --- a/drivers/net/wireless/atmel_cs.c +++ b/drivers/net/wireless/atmel_cs.c @@ -42,7 +42,6 @@ #include <linux/moduleparam.h> #include <linux/device.h> -#include <pcmcia/cs.h> #include <pcmcia/cistpl.h> #include <pcmcia/cisreg.h> #include <pcmcia/ds.h> @@ -64,58 +63,21 @@ MODULE_SUPPORTED_DEVICE("Atmel at76c50x PCMCIA cards"); /*====================================================================*/ -/* - The event() function is this driver's Card Services event handler. - It will be called by Card Services when an appropriate card status - event is received. The config() and release() entry points are - used to configure or release a socket, in response to card - insertion and ejection events. They are invoked from the atmel_cs - event handler. -*/ - static int atmel_config(struct pcmcia_device *link); static void atmel_release(struct pcmcia_device *link); -/* - The attach() and detach() entry points are used to create and destroy - "instances" of the driver, where each instance represents everything - needed to manage one actual PCMCIA card. -*/ - static void atmel_detach(struct pcmcia_device *p_dev); typedef struct local_info_t { struct net_device *eth_dev; } local_info_t; -/*====================================================================== - - atmel_attach() creates an "instance" of the driver, allocating - local data structures for one device. The device is registered - with Card Services. - - The dev_link structure is initialized, but we don't actually - configure the card at this point -- we wait until we receive a - card insertion event. - - ======================================================================*/ - static int atmel_probe(struct pcmcia_device *p_dev) { local_info_t *local; dev_dbg(&p_dev->dev, "atmel_attach()\n"); - /* - General socket configuration defaults can go here. In this - client, we assume very little, and rely on the CIS for almost - everything. In most clients, many details (i.e., number, sizes, - and attributes of IO windows) are fixed by the nature of the - device, and can be hard-wired here. - */ - p_dev->conf.Attributes = 0; - p_dev->conf.IntType = INT_MEMORY_AND_IO; - /* Allocate space for private device-specific data */ local = kzalloc(sizeof(local_info_t), GFP_KERNEL); if (!local) { @@ -127,15 +89,6 @@ static int atmel_probe(struct pcmcia_device *p_dev) return atmel_config(p_dev); } /* atmel_attach */ -/*====================================================================== - - This deletes a driver "instance". The device is de-registered - with Card Services. If it has been released, all local data - structures are freed. Otherwise, the structures will be freed - when the device is released. - - ======================================================================*/ - static void atmel_detach(struct pcmcia_device *link) { dev_dbg(&link->dev, "atmel_detach\n"); @@ -145,14 +98,6 @@ static void atmel_detach(struct pcmcia_device *link) kfree(link->priv); } -/*====================================================================== - - atmel_config() is scheduled to run after a CARD_INSERTION event - is received, to configure the PCMCIA socket, and to make the - device available to the system. - - ======================================================================*/ - /* Call-back function to interrogate PCMCIA-specific information about the current existance of the card */ static int card_present(void *arg) @@ -165,47 +110,11 @@ static int card_present(void *arg) return 0; } -static int atmel_config_check(struct pcmcia_device *p_dev, - cistpl_cftable_entry_t *cfg, - cistpl_cftable_entry_t *dflt, - unsigned int vcc, - void *priv_data) +static int atmel_config_check(struct pcmcia_device *p_dev, void *priv_data) { - if (cfg->index == 0) - return -ENODEV; - - /* Does this card need audio output? */ - if (cfg->flags & CISTPL_CFTABLE_AUDIO) { - p_dev->conf.Attributes |= CONF_ENABLE_SPKR; - p_dev->conf.Status = CCSR_AUDIO_ENA; - } + if (p_dev->config_index == 0) + return -EINVAL; - /* Use power settings for Vcc and Vpp if present */ - /* Note that the CIS values need to be rescaled */ - if (cfg->vpp1.present & (1<<CISTPL_POWER_VNOM)) - p_dev->conf.Vpp = cfg->vpp1.param[CISTPL_POWER_VNOM]/10000; - else if (dflt->vpp1.present & (1<<CISTPL_POWER_VNOM)) - p_dev->conf.Vpp = dflt->vpp1.param[CISTPL_POWER_VNOM]/10000; - - p_dev->conf.Attributes |= CONF_ENABLE_IRQ; - - /* IO window settings */ - p_dev->resource[0]->end = p_dev->resource[1]->end = 0; - if ((cfg->io.nwin > 0) || (dflt->io.nwin > 0)) { - cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &dflt->io; - p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH; - p_dev->resource[0]->flags |= - pcmcia_io_cfg_data_width(io->flags); - p_dev->resource[0]->start = io->win[0].base; - p_dev->resource[0]->end = io->win[0].len; - if (io->nwin > 1) { - p_dev->resource[1]->flags = p_dev->resource[0]->flags; - p_dev->resource[1]->start = io->win[1].base; - p_dev->resource[1]->end = io->win[1].len; - } - } - - /* This reserves IO space but doesn't actually enable it */ return pcmcia_request_io(p_dev); } @@ -220,18 +129,9 @@ static int atmel_config(struct pcmcia_device *link) dev_dbg(&link->dev, "atmel_config\n"); - /* - In this loop, we scan the CIS for configuration table entries, - each of which describes a valid card configuration, including - voltage, IO window, memory window, and interrupt settings. - - We make no assumptions about the card to be configured: we use - just the information available in the CIS. In an ideal world, - this would work for any PCMCIA card, but it requires a complete - and accurate CIS. In practice, a driver usually "knows" most of - these things without consulting the CIS, and most client drivers - will only use the CIS to fill in implementation-defined details. - */ + link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_VPP | + CONF_AUTO_AUDIO | CONF_AUTO_SET_IO; + if (pcmcia_loop_config(link, atmel_config_check, NULL)) goto failed; @@ -240,12 +140,7 @@ static int atmel_config(struct pcmcia_device *link) goto failed; } - /* - This actually configures the PCMCIA socket -- setting up - the I/O windows and the interrupt mapping, and putting the - card and host interface into "Memory and IO" mode. - */ - ret = pcmcia_request_configuration(link, &link->conf); + ret = pcmcia_enable_device(link); if (ret) goto failed; @@ -267,14 +162,6 @@ static int atmel_config(struct pcmcia_device *link) return -ENODEV; } -/*====================================================================== - - After a card is removed, atmel_release() will unregister the - device, and release the PCMCIA configuration. If the device is - still open, this will be postponed until it is closed. - - ======================================================================*/ - static void atmel_release(struct pcmcia_device *link) { struct net_device *dev = ((local_info_t*)link->priv)->eth_dev; @@ -353,9 +240,7 @@ MODULE_DEVICE_TABLE(pcmcia, atmel_ids); static struct pcmcia_driver atmel_driver = { .owner = THIS_MODULE, - .drv = { - .name = "atmel_cs", - }, + .name = "atmel_cs", .probe = atmel_probe, .remove = atmel_detach, .id_table = atmel_ids, @@ -363,12 +248,12 @@ static struct pcmcia_driver atmel_driver = { .resume = atmel_resume, }; -static int atmel_cs_init(void) +static int __init atmel_cs_init(void) { return pcmcia_register_driver(&atmel_driver); } -static void atmel_cs_cleanup(void) +static void __exit atmel_cs_cleanup(void) { pcmcia_unregister_driver(&atmel_driver); } diff --git a/drivers/net/wireless/b43/pcmcia.c b/drivers/net/wireless/b43/pcmcia.c index dfbc41d431ff..7dcba5fafdc7 100644 --- a/drivers/net/wireless/b43/pcmcia.c +++ b/drivers/net/wireless/b43/pcmcia.c @@ -26,7 +26,6 @@ #include <linux/ssb/ssb.h> #include <linux/slab.h> -#include <pcmcia/cs.h> #include <pcmcia/cistpl.h> #include <pcmcia/ciscode.h> #include <pcmcia/ds.h> @@ -63,7 +62,6 @@ static int b43_pcmcia_resume(struct pcmcia_device *dev) static int __devinit b43_pcmcia_probe(struct pcmcia_device *dev) { struct ssb_bus *ssb; - win_req_t win; int err = -ENOMEM; int res = 0; @@ -73,30 +71,28 @@ static int __devinit b43_pcmcia_probe(struct pcmcia_device *dev) err = -ENODEV; - dev->conf.Attributes = CONF_ENABLE_IRQ; - dev->conf.IntType = INT_MEMORY_AND_IO; + dev->config_flags |= CONF_ENABLE_IRQ; - win.Attributes = WIN_ENABLE | WIN_DATA_WIDTH_16 | + dev->resource[2]->flags |= WIN_ENABLE | WIN_DATA_WIDTH_16 | WIN_USE_WAIT; - win.Base = 0; - win.Size = SSB_CORE_SIZE; - win.AccessSpeed = 250; - res = pcmcia_request_window(dev, &win, &dev->win); + dev->resource[2]->start = 0; + dev->resource[2]->end = SSB_CORE_SIZE; + res = pcmcia_request_window(dev, dev->resource[2], 250); if (res != 0) goto err_kfree_ssb; - res = pcmcia_map_mem_page(dev, dev->win, 0); + res = pcmcia_map_mem_page(dev, dev->resource[2], 0); if (res != 0) goto err_disable; if (!dev->irq) goto err_disable; - res = pcmcia_request_configuration(dev, &dev->conf); + res = pcmcia_enable_device(dev); if (res != 0) goto err_disable; - err = ssb_bus_pcmciabus_register(ssb, dev, win.Base); + err = ssb_bus_pcmciabus_register(ssb, dev, dev->resource[2]->start); if (err) goto err_disable; dev->priv = ssb; @@ -125,9 +121,7 @@ static void __devexit b43_pcmcia_remove(struct pcmcia_device *dev) static struct pcmcia_driver b43_pcmcia_driver = { .owner = THIS_MODULE, - .drv = { - .name = "b43-pcmcia", - }, + .name = "b43-pcmcia", .id_table = b43_pcmcia_tbl, .probe = b43_pcmcia_probe, .remove = __devexit_p(b43_pcmcia_remove), diff --git a/drivers/net/wireless/hostap/hostap_cs.c b/drivers/net/wireless/hostap/hostap_cs.c index ba54d1b04d22..bd8a4134edeb 100644 --- a/drivers/net/wireless/hostap/hostap_cs.c +++ b/drivers/net/wireless/hostap/hostap_cs.c @@ -12,7 +12,6 @@ #include <linux/wireless.h> #include <net/iw_handler.h> -#include <pcmcia/cs.h> #include <pcmcia/cistpl.h> #include <pcmcia/cisreg.h> #include <pcmcia/ds.h> @@ -437,7 +436,6 @@ static int hostap_cs_probe(struct pcmcia_device *p_dev) int ret; PDEBUG(DEBUG_HW, "%s: setting Vcc=33 (constant)\n", dev_info); - p_dev->conf.IntType = INT_MEMORY_AND_IO; ret = prism2_config(p_dev); if (ret) { @@ -468,74 +466,11 @@ static void prism2_detach(struct pcmcia_device *link) } -/* run after a CARD_INSERTION event is received to configure the PCMCIA - * socket and make the device available to the system */ - -static int prism2_config_check(struct pcmcia_device *p_dev, - cistpl_cftable_entry_t *cfg, - cistpl_cftable_entry_t *dflt, - unsigned int vcc, - void *priv_data) +static int prism2_config_check(struct pcmcia_device *p_dev, void *priv_data) { - if (cfg->index == 0) - return -ENODEV; - - PDEBUG(DEBUG_EXTRA, "Checking CFTABLE_ENTRY 0x%02X " - "(default 0x%02X)\n", cfg->index, dflt->index); - - /* Does this card need audio output? */ - if (cfg->flags & CISTPL_CFTABLE_AUDIO) { - p_dev->conf.Attributes |= CONF_ENABLE_SPKR; - p_dev->conf.Status = CCSR_AUDIO_ENA; - } - - /* Use power settings for Vcc and Vpp if present */ - /* Note that the CIS values need to be rescaled */ - if (cfg->vcc.present & (1 << CISTPL_POWER_VNOM)) { - if (vcc != cfg->vcc.param[CISTPL_POWER_VNOM] / - 10000 && !ignore_cis_vcc) { - PDEBUG(DEBUG_EXTRA, " Vcc mismatch - skipping" - " this entry\n"); - return -ENODEV; - } - } else if (dflt->vcc.present & (1 << CISTPL_POWER_VNOM)) { - if (vcc != dflt->vcc.param[CISTPL_POWER_VNOM] / - 10000 && !ignore_cis_vcc) { - PDEBUG(DEBUG_EXTRA, " Vcc (default) mismatch " - "- skipping this entry\n"); - return -ENODEV; - } - } + if (p_dev->config_index == 0) + return -EINVAL; - if (cfg->vpp1.present & (1 << CISTPL_POWER_VNOM)) - p_dev->conf.Vpp = cfg->vpp1.param[CISTPL_POWER_VNOM] / 10000; - else if (dflt->vpp1.present & (1 << CISTPL_POWER_VNOM)) - p_dev->conf.Vpp = dflt->vpp1.param[CISTPL_POWER_VNOM] / 10000; - - /* Do we need to allocate an interrupt? */ - p_dev->conf.Attributes |= CONF_ENABLE_IRQ; - - /* IO window settings */ - PDEBUG(DEBUG_EXTRA, "IO window settings: cfg->io.nwin=%d " - "dflt->io.nwin=%d\n", - cfg->io.nwin, dflt->io.nwin); - p_dev->resource[0]->end = p_dev->resource[1]->end = 0; - if ((cfg->io.nwin > 0) || (dflt->io.nwin > 0)) { - cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &dflt->io; - p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH; - p_dev->resource[0]->flags |= - pcmcia_io_cfg_data_width(io->flags); - p_dev->io_lines = io->flags & CISTPL_IO_LINES_MASK; - p_dev->resource[0]->start = io->win[0].base; - p_dev->resource[0]->end = io->win[0].len; - if (io->nwin > 1) { - p_dev->resource[1]->flags = p_dev->resource[0]->flags; - p_dev->resource[1]->start = io->win[1].base; - p_dev->resource[1]->end = io->win[1].len; - } - } - - /* This reserves IO space but doesn't actually enable it */ return pcmcia_request_io(p_dev); } @@ -557,6 +492,10 @@ static int prism2_config(struct pcmcia_device *link) } /* Look for an appropriate configuration table entry in the CIS */ + link->config_flags |= CONF_AUTO_SET_VPP | CONF_AUTO_AUDIO | + CONF_AUTO_CHECK_VCC | CONF_AUTO_SET_IO | CONF_ENABLE_IRQ; + if (ignore_cis_vcc) + link->config_flags &= ~CONF_AUTO_CHECK_VCC; ret = pcmcia_loop_config(link, prism2_config_check, NULL); if (ret) { if (!ignore_cis_vcc) @@ -588,12 +527,7 @@ static int prism2_config(struct pcmcia_device *link) if (ret) goto failed_unlock; - /* - * This actually configures the PCMCIA socket -- setting up - * the I/O windows and the interrupt mapping, and putting the - * card and host interface into "Memory and IO" mode. - */ - ret = pcmcia_request_configuration(link, &link->conf); + ret = pcmcia_enable_device(link); if (ret) goto failed_unlock; @@ -602,20 +536,6 @@ static int prism2_config(struct pcmcia_device *link) spin_unlock_irqrestore(&local->irq_init_lock, flags); - /* Finally, report what we've done */ - printk(KERN_INFO "%s: index 0x%02x: ", - dev_info, link->conf.ConfigIndex); - if (link->conf.Vpp) - printk(", Vpp %d.%d", link->conf.Vpp / 10, - link->conf.Vpp % 10); - if (link->conf.Attributes & CONF_ENABLE_IRQ) - printk(", irq %d", link->irq); - if (link->resource[0]) - printk(" & %pR", link->resource[0]); - if (link->resource[1]) - printk(" & %pR", link->resource[1]); - printk("\n"); - local->shutdown = 0; sandisk_enable_wireless(dev); @@ -627,7 +547,7 @@ static int prism2_config(struct pcmcia_device *link) return ret; failed_unlock: - spin_unlock_irqrestore(&local->irq_init_lock, flags); + spin_unlock_irqrestore(&local->irq_init_lock, flags); failed: kfree(hw_priv); prism2_release((u_long)link); @@ -779,9 +699,7 @@ MODULE_DEVICE_TABLE(pcmcia, hostap_cs_ids); static struct pcmcia_driver hostap_driver = { - .drv = { - .name = "hostap_cs", - }, + .name = "hostap_cs", .probe = hostap_cs_probe, .remove = prism2_detach, .owner = THIS_MODULE, diff --git a/drivers/net/wireless/libertas/if_cs.c b/drivers/net/wireless/libertas/if_cs.c index 9c298396be50..ff1280f41336 100644 --- a/drivers/net/wireless/libertas/if_cs.c +++ b/drivers/net/wireless/libertas/if_cs.c @@ -28,7 +28,6 @@ #include <linux/firmware.h> #include <linux/netdevice.h> -#include <pcmcia/cs.h> #include <pcmcia/cistpl.h> #include <pcmcia/ds.h> @@ -761,15 +760,6 @@ static int if_cs_host_to_card(struct lbs_private *priv, } -/********************************************************************/ -/* Card Services */ -/********************************************************************/ - -/* - * After a card is removed, if_cs_release() will unregister the - * device, and release the PCMCIA configuration. If the device is - * still open, this will be postponed until it is closed. - */ static void if_cs_release(struct pcmcia_device *p_dev) { struct if_cs_card *card = p_dev->priv; @@ -785,31 +775,12 @@ static void if_cs_release(struct pcmcia_device *p_dev) } -/* - * This creates an "instance" of the driver, allocating local data - * structures for one device. The device is registered with Card - * Services. - * - * The dev_link structure is initialized, but we don't actually - * configure the card at this point -- we wait until we receive a card - * insertion event. - */ - -static int if_cs_ioprobe(struct pcmcia_device *p_dev, - cistpl_cftable_entry_t *cfg, - cistpl_cftable_entry_t *dflt, - unsigned int vcc, - void *priv_data) +static int if_cs_ioprobe(struct pcmcia_device *p_dev, void *priv_data) { + p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH; p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_AUTO; - p_dev->resource[0]->start = cfg->io.win[0].base; - p_dev->resource[0]->end = cfg->io.win[0].len; - - /* Do we need to allocate an interrupt? */ - p_dev->conf.Attributes |= CONF_ENABLE_IRQ; - /* IO window settings */ - if (cfg->io.nwin != 1) { + if (p_dev->resource[1]->end) { lbs_pr_err("wrong CIS (check number of IO windows)\n"); return -ENODEV; } @@ -835,15 +806,13 @@ static int if_cs_probe(struct pcmcia_device *p_dev) card->p_dev = p_dev; p_dev->priv = card; - p_dev->conf.Attributes = 0; - p_dev->conf.IntType = INT_MEMORY_AND_IO; + p_dev->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_IO; if (pcmcia_loop_config(p_dev, if_cs_ioprobe, NULL)) { lbs_pr_err("error in pcmcia_loop_config\n"); goto out1; } - /* * Allocate an interrupt line. Note that this does not assign * a handler to the interrupt, unless the 'Handler' member of @@ -861,14 +830,9 @@ static int if_cs_probe(struct pcmcia_device *p_dev) goto out1; } - /* - * This actually configures the PCMCIA socket -- setting up - * the I/O windows and the interrupt mapping, and putting the - * card and host interface into "Memory and IO" mode. - */ - ret = pcmcia_request_configuration(p_dev, &p_dev->conf); + ret = pcmcia_enable_device(p_dev); if (ret) { - lbs_pr_err("error in pcmcia_request_configuration\n"); + lbs_pr_err("error in pcmcia_enable_device\n"); goto out2; } @@ -962,12 +926,6 @@ out: } -/* - * This deletes a driver "instance". The device is de-registered with - * Card Services. If it has been released, all local data structures - * are freed. Otherwise, the structures will be freed when the device - * is released. - */ static void if_cs_detach(struct pcmcia_device *p_dev) { struct if_cs_card *card = p_dev->priv; @@ -1000,9 +958,7 @@ MODULE_DEVICE_TABLE(pcmcia, if_cs_ids); static struct pcmcia_driver lbs_driver = { .owner = THIS_MODULE, - .drv = { - .name = DRV_NAME, - }, + .name = DRV_NAME, .probe = if_cs_probe, .remove = if_cs_detach, .id_table = if_cs_ids, diff --git a/drivers/net/wireless/orinoco/orinoco_cs.c b/drivers/net/wireless/orinoco/orinoco_cs.c index ef46a2d88539..71b3d68b9403 100644 --- a/drivers/net/wireless/orinoco/orinoco_cs.c +++ b/drivers/net/wireless/orinoco/orinoco_cs.c @@ -17,7 +17,6 @@ #include <linux/kernel.h> #include <linux/init.h> #include <linux/delay.h> -#include <pcmcia/cs.h> #include <pcmcia/cistpl.h> #include <pcmcia/cisreg.h> #include <pcmcia/ds.h> @@ -93,14 +92,6 @@ orinoco_cs_hard_reset(struct orinoco_private *priv) /* PCMCIA stuff */ /********************************************************************/ -/* - * This creates an "instance" of the driver, allocating local data - * structures for one device. The device is registered with Card - * Services. - * - * The dev_link structure is initialized, but we don't actually - * configure the card at this point -- we wait until we receive a card - * insertion event. */ static int orinoco_cs_probe(struct pcmcia_device *link) { @@ -117,23 +108,9 @@ orinoco_cs_probe(struct pcmcia_device *link) card->p_dev = link; link->priv = priv; - /* General socket configuration defaults can go here. In this - * client, we assume very little, and rely on the CIS for - * almost everything. In most clients, many details (i.e., - * number, sizes, and attributes of IO windows) are fixed by - * the nature of the device, and can be hard-wired here. */ - link->conf.Attributes = 0; - link->conf.IntType = INT_MEMORY_AND_IO; - return orinoco_cs_config(link); } /* orinoco_cs_attach */ -/* - * This deletes a driver "instance". The device is de-registered with - * Card Services. If it has been released, all local data structures - * are freed. Otherwise, the structures will be freed when the device - * is released. - */ static void orinoco_cs_detach(struct pcmcia_device *link) { struct orinoco_private *priv = link->priv; @@ -145,76 +122,12 @@ static void orinoco_cs_detach(struct pcmcia_device *link) free_orinocodev(priv); } /* orinoco_cs_detach */ -/* - * orinoco_cs_config() is scheduled to run after a CARD_INSERTION - * event is received, to configure the PCMCIA socket, and to make the - * device available to the system. - */ - -static int orinoco_cs_config_check(struct pcmcia_device *p_dev, - cistpl_cftable_entry_t *cfg, - cistpl_cftable_entry_t *dflt, - unsigned int vcc, - void *priv_data) +static int orinoco_cs_config_check(struct pcmcia_device *p_dev, void *priv_data) { - if (cfg->index == 0) - goto next_entry; - - /* Use power settings for Vcc and Vpp if present */ - /* Note that the CIS values need to be rescaled */ - if (cfg->vcc.present & (1 << CISTPL_POWER_VNOM)) { - if (vcc != cfg->vcc.param[CISTPL_POWER_VNOM] / 10000) { - DEBUG(2, "%s: Vcc mismatch (vcc = %d, CIS = %d)\n", - __func__, vcc, - cfg->vcc.param[CISTPL_POWER_VNOM] / 10000); - if (!ignore_cis_vcc) - goto next_entry; - } - } else if (dflt->vcc.present & (1 << CISTPL_POWER_VNOM)) { - if (vcc != dflt->vcc.param[CISTPL_POWER_VNOM] / 10000) { - DEBUG(2, "%s: Vcc mismatch (vcc = %d, CIS = %d)\n", - __func__, vcc, - dflt->vcc.param[CISTPL_POWER_VNOM] / 10000); - if (!ignore_cis_vcc) - goto next_entry; - } - } + if (p_dev->config_index == 0) + return -EINVAL; - if (cfg->vpp1.present & (1 << CISTPL_POWER_VNOM)) - p_dev->conf.Vpp = - cfg->vpp1.param[CISTPL_POWER_VNOM] / 10000; - else if (dflt->vpp1.present & (1 << CISTPL_POWER_VNOM)) - p_dev->conf.Vpp = - dflt->vpp1.param[CISTPL_POWER_VNOM] / 10000; - - /* Do we need to allocate an interrupt? */ - p_dev->conf.Attributes |= CONF_ENABLE_IRQ; - - /* IO window settings */ - p_dev->resource[0]->end = p_dev->resource[1]->end = 0; - if ((cfg->io.nwin > 0) || (dflt->io.nwin > 0)) { - cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &dflt->io; - p_dev->io_lines = io->flags & CISTPL_IO_LINES_MASK; - p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH; - p_dev->resource[0]->flags |= - pcmcia_io_cfg_data_width(io->flags); - p_dev->resource[0]->start = io->win[0].base; - p_dev->resource[0]->end = io->win[0].len; - if (io->nwin > 1) { - p_dev->resource[1]->flags = p_dev->resource[0]->flags; - p_dev->resource[1]->start = io->win[1].base; - p_dev->resource[1]->end = io->win[1].len; - } - - /* This reserves IO space but doesn't actually enable it */ - if (pcmcia_request_io(p_dev) != 0) - goto next_entry; - } - return 0; - -next_entry: - pcmcia_disable_device(p_dev); - return -ENODEV; + return pcmcia_request_io(p_dev); }; static int @@ -225,20 +138,10 @@ orinoco_cs_config(struct pcmcia_device *link) int ret; void __iomem *mem; - /* - * In this loop, we scan the CIS for configuration table - * entries, each of which describes a valid card - * configuration, including voltage, IO window, memory window, - * and interrupt settings. - * - * We make no assumptions about the card to be configured: we - * use just the information available in the CIS. In an ideal - * world, this would work for any PCMCIA card, but it requires - * a complete and accurate CIS. In practice, a driver usually - * "knows" most of these things without consulting the CIS, - * and most client drivers will only use the CIS to fill in - * implementation-defined details. - */ + link->config_flags |= CONF_AUTO_SET_VPP | CONF_AUTO_CHECK_VCC | + CONF_AUTO_SET_IO | CONF_ENABLE_IRQ; + if (ignore_cis_vcc) + link->config_flags &= ~CONF_AUTO_CHECK_VCC; ret = pcmcia_loop_config(link, orinoco_cs_config_check, NULL); if (ret) { if (!ignore_cis_vcc) @@ -262,12 +165,7 @@ orinoco_cs_config(struct pcmcia_device *link) hermes_struct_init(hw, mem, HERMES_16BIT_REGSPACING); - /* - * This actually configures the PCMCIA socket -- setting up - * the I/O windows and the interrupt mapping, and putting the - * card and host interface into "Memory and IO" mode. - */ - ret = pcmcia_request_configuration(link, &link->conf); + ret = pcmcia_enable_device(link); if (ret) goto failed; @@ -291,11 +189,6 @@ orinoco_cs_config(struct pcmcia_device *link) return -ENODEV; } /* orinoco_cs_config */ -/* - * After a card is removed, orinoco_cs_release() will unregister the - * device, and release the PCMCIA configuration. If the device is - * still open, this will be postponed until it is closed. - */ static void orinoco_cs_release(struct pcmcia_device *link) { @@ -344,12 +237,6 @@ static int orinoco_cs_resume(struct pcmcia_device *link) /* Module initialization */ /********************************************************************/ -/* Can't be declared "const" or the whole __initdata section will - * become const */ -static char version[] __initdata = DRIVER_NAME " " DRIVER_VERSION - " (David Gibson <hermes@gibson.dropbear.id.au>, " - "Pavel Roskin <proski@gnu.org>, et al)"; - static struct pcmcia_device_id orinoco_cs_ids[] = { PCMCIA_DEVICE_MANF_CARD(0x0101, 0x0777), /* 3Com AirConnect PCI 777A */ PCMCIA_DEVICE_MANF_CARD(0x0156, 0x0002), /* Lucent Orinoco and old Intersil */ @@ -441,9 +328,7 @@ MODULE_DEVICE_TABLE(pcmcia, orinoco_cs_ids); static struct pcmcia_driver orinoco_driver = { .owner = THIS_MODULE, - .drv = { - .name = DRIVER_NAME, - }, + .name = DRIVER_NAME, .probe = orinoco_cs_probe, .remove = orinoco_cs_detach, .id_table = orinoco_cs_ids, @@ -454,8 +339,6 @@ static struct pcmcia_driver orinoco_driver = { static int __init init_orinoco_cs(void) { - printk(KERN_DEBUG "%s\n", version); - return pcmcia_register_driver(&orinoco_driver); } diff --git a/drivers/net/wireless/orinoco/spectrum_cs.c b/drivers/net/wireless/orinoco/spectrum_cs.c index 873877e17e1b..fb859a5ad2eb 100644 --- a/drivers/net/wireless/orinoco/spectrum_cs.c +++ b/drivers/net/wireless/orinoco/spectrum_cs.c @@ -25,7 +25,6 @@ #include <linux/kernel.h> #include <linux/init.h> #include <linux/delay.h> -#include <pcmcia/cs.h> #include <pcmcia/cistpl.h> #include <pcmcia/cisreg.h> #include <pcmcia/ds.h> @@ -154,14 +153,6 @@ spectrum_cs_stop_firmware(struct orinoco_private *priv, int idle) /* PCMCIA stuff */ /********************************************************************/ -/* - * This creates an "instance" of the driver, allocating local data - * structures for one device. The device is registered with Card - * Services. - * - * The dev_link structure is initialized, but we don't actually - * configure the card at this point -- we wait until we receive a card - * insertion event. */ static int spectrum_cs_probe(struct pcmcia_device *link) { @@ -179,23 +170,9 @@ spectrum_cs_probe(struct pcmcia_device *link) card->p_dev = link; link->priv = priv; - /* General socket configuration defaults can go here. In this - * client, we assume very little, and rely on the CIS for - * almost everything. In most clients, many details (i.e., - * number, sizes, and attributes of IO windows) are fixed by - * the nature of the device, and can be hard-wired here. */ - link->conf.Attributes = 0; - link->conf.IntType = INT_MEMORY_AND_IO; - return spectrum_cs_config(link); } /* spectrum_cs_attach */ -/* - * This deletes a driver "instance". The device is de-registered with - * Card Services. If it has been released, all local data structures - * are freed. Otherwise, the structures will be freed when the device - * is released. - */ static void spectrum_cs_detach(struct pcmcia_device *link) { struct orinoco_private *priv = link->priv; @@ -207,76 +184,13 @@ static void spectrum_cs_detach(struct pcmcia_device *link) free_orinocodev(priv); } /* spectrum_cs_detach */ -/* - * spectrum_cs_config() is scheduled to run after a CARD_INSERTION - * event is received, to configure the PCMCIA socket, and to make the - * device available to the system. - */ - static int spectrum_cs_config_check(struct pcmcia_device *p_dev, - cistpl_cftable_entry_t *cfg, - cistpl_cftable_entry_t *dflt, - unsigned int vcc, void *priv_data) { - if (cfg->index == 0) - goto next_entry; - - /* Use power settings for Vcc and Vpp if present */ - /* Note that the CIS values need to be rescaled */ - if (cfg->vcc.present & (1 << CISTPL_POWER_VNOM)) { - if (vcc != cfg->vcc.param[CISTPL_POWER_VNOM] / 10000) { - DEBUG(2, "%s: Vcc mismatch (vcc = %d, CIS = %d)\n", - __func__, vcc, - cfg->vcc.param[CISTPL_POWER_VNOM] / 10000); - if (!ignore_cis_vcc) - goto next_entry; - } - } else if (dflt->vcc.present & (1 << CISTPL_POWER_VNOM)) { - if (vcc != dflt->vcc.param[CISTPL_POWER_VNOM] / 10000) { - DEBUG(2, "%s: Vcc mismatch (vcc = %d, CIS = %d)\n", - __func__, vcc, - dflt->vcc.param[CISTPL_POWER_VNOM] / 10000); - if (!ignore_cis_vcc) - goto next_entry; - } - } + if (p_dev->config_index == 0) + return -EINVAL; - if (cfg->vpp1.present & (1 << CISTPL_POWER_VNOM)) - p_dev->conf.Vpp = - cfg->vpp1.param[CISTPL_POWER_VNOM] / 10000; - else if (dflt->vpp1.present & (1 << CISTPL_POWER_VNOM)) - p_dev->conf.Vpp = - dflt->vpp1.param[CISTPL_POWER_VNOM] / 10000; - - /* Do we need to allocate an interrupt? */ - p_dev->conf.Attributes |= CONF_ENABLE_IRQ; - - /* IO window settings */ - p_dev->resource[0]->end = p_dev->resource[1]->end = 0; - if ((cfg->io.nwin > 0) || (dflt->io.nwin > 0)) { - cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &dflt->io; - p_dev->io_lines = io->flags & CISTPL_IO_LINES_MASK; - p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH; - p_dev->resource[0]->flags |= - pcmcia_io_cfg_data_width(io->flags); - p_dev->resource[0]->start = io->win[0].base; - p_dev->resource[0]->end = io->win[0].len; - if (io->nwin > 1) { - p_dev->resource[1]->flags = p_dev->resource[0]->flags; - p_dev->resource[1]->start = io->win[1].base; - p_dev->resource[1]->end = io->win[1].len; - } - - /* This reserves IO space but doesn't actually enable it */ - if (pcmcia_request_io(p_dev) != 0) - goto next_entry; - } - return 0; - -next_entry: - pcmcia_disable_device(p_dev); - return -ENODEV; + return pcmcia_request_io(p_dev); }; static int @@ -287,20 +201,10 @@ spectrum_cs_config(struct pcmcia_device *link) int ret; void __iomem *mem; - /* - * In this loop, we scan the CIS for configuration table - * entries, each of which describes a valid card - * configuration, including voltage, IO window, memory window, - * and interrupt settings. - * - * We make no assumptions about the card to be configured: we - * use just the information available in the CIS. In an ideal - * world, this would work for any PCMCIA card, but it requires - * a complete and accurate CIS. In practice, a driver usually - * "knows" most of these things without consulting the CIS, - * and most client drivers will only use the CIS to fill in - * implementation-defined details. - */ + link->config_flags |= CONF_AUTO_SET_VPP | CONF_AUTO_CHECK_VCC | + CONF_AUTO_SET_IO | CONF_ENABLE_IRQ; + if (ignore_cis_vcc) + link->config_flags &= ~CONF_AUTO_CHECK_VCC; ret = pcmcia_loop_config(link, spectrum_cs_config_check, NULL); if (ret) { if (!ignore_cis_vcc) @@ -325,12 +229,7 @@ spectrum_cs_config(struct pcmcia_device *link) hermes_struct_init(hw, mem, HERMES_16BIT_REGSPACING); hw->eeprom_pda = true; - /* - * This actually configures the PCMCIA socket -- setting up - * the I/O windows and the interrupt mapping, and putting the - * card and host interface into "Memory and IO" mode. - */ - ret = pcmcia_request_configuration(link, &link->conf); + ret = pcmcia_enable_device(link); if (ret) goto failed; @@ -358,11 +257,6 @@ spectrum_cs_config(struct pcmcia_device *link) return -ENODEV; } /* spectrum_cs_config */ -/* - * After a card is removed, spectrum_cs_release() will unregister the - * device, and release the PCMCIA configuration. If the device is - * still open, this will be postponed until it is closed. - */ static void spectrum_cs_release(struct pcmcia_device *link) { @@ -407,12 +301,6 @@ spectrum_cs_resume(struct pcmcia_device *link) /* Module initialization */ /********************************************************************/ -/* Can't be declared "const" or the whole __initdata section will - * become const */ -static char version[] __initdata = DRIVER_NAME " " DRIVER_VERSION - " (Pavel Roskin <proski@gnu.org>," - " David Gibson <hermes@gibson.dropbear.id.au>, et al)"; - static struct pcmcia_device_id spectrum_cs_ids[] = { PCMCIA_DEVICE_MANF_CARD(0x026c, 0x0001), /* Symbol Spectrum24 LA4137 */ PCMCIA_DEVICE_MANF_CARD(0x0104, 0x0001), /* Socket Communications CF */ @@ -423,9 +311,7 @@ MODULE_DEVICE_TABLE(pcmcia, spectrum_cs_ids); static struct pcmcia_driver orinoco_driver = { .owner = THIS_MODULE, - .drv = { - .name = DRIVER_NAME, - }, + .name = DRIVER_NAME, .probe = spectrum_cs_probe, .remove = spectrum_cs_detach, .suspend = spectrum_cs_suspend, @@ -436,8 +322,6 @@ static struct pcmcia_driver orinoco_driver = { static int __init init_spectrum_cs(void) { - printk(KERN_DEBUG "%s\n", version); - return pcmcia_register_driver(&orinoco_driver); } diff --git a/drivers/net/wireless/ray_cs.c b/drivers/net/wireless/ray_cs.c index 88560d0ae50a..af5b17ce5a15 100644 --- a/drivers/net/wireless/ray_cs.c +++ b/drivers/net/wireless/ray_cs.c @@ -46,7 +46,6 @@ #include <linux/ethtool.h> #include <linux/ieee80211.h> -#include <pcmcia/cs.h> #include <pcmcia/cistpl.h> #include <pcmcia/cisreg.h> #include <pcmcia/ds.h> @@ -169,13 +168,6 @@ static int bc; */ static char *phy_addr = NULL; - -/* A struct pcmcia_device structure has fields for most things that are needed - to keep track of a socket, but there will usually be some device - specific information that also needs to be kept track of. The - 'priv' pointer in a struct pcmcia_device structure can be used to point to - a device-specific private data structure, like this. -*/ static unsigned int ray_mem_speed = 500; /* WARNING: THIS DRIVER IS NOT CAPABLE OF HANDLING MULTIPLE DEVICES! */ @@ -290,14 +282,6 @@ static const struct net_device_ops ray_netdev_ops = { .ndo_validate_addr = eth_validate_addr, }; -/*============================================================================= - ray_attach() creates an "instance" of the driver, allocating - local data structures for one device. The device is registered - with Card Services. - The dev_link structure is initialized, but we don't actually - configure the card at this point -- we wait until we receive a - card insertion event. -=============================================================================*/ static int ray_probe(struct pcmcia_device *p_dev) { ray_dev_t *local; @@ -318,9 +302,8 @@ static int ray_probe(struct pcmcia_device *p_dev) p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_8; /* General socket configuration */ - p_dev->conf.Attributes = CONF_ENABLE_IRQ; - p_dev->conf.IntType = INT_MEMORY_AND_IO; - p_dev->conf.ConfigIndex = 1; + p_dev->config_flags |= CONF_ENABLE_IRQ; + p_dev->config_index = 1; p_dev->priv = dev; @@ -353,12 +336,6 @@ fail_alloc_dev: return -ENOMEM; } /* ray_attach */ -/*============================================================================= - This deletes a driver "instance". The device is de-registered - with Card Services. If it has been released, all local data - structures are freed. Otherwise, the structures will be freed - when the device is released. -=============================================================================*/ static void ray_detach(struct pcmcia_device *link) { struct net_device *dev; @@ -381,17 +358,11 @@ static void ray_detach(struct pcmcia_device *link) dev_dbg(&link->dev, "ray_cs ray_detach ending\n"); } /* ray_detach */ -/*============================================================================= - ray_config() is run after a CARD_INSERTION event - is received, to configure the PCMCIA socket, and to make the - ethernet device available to the system. -=============================================================================*/ #define MAX_TUPLE_SIZE 128 static int ray_config(struct pcmcia_device *link) { int ret = 0; int i; - win_req_t req; struct net_device *dev = (struct net_device *)link->priv; ray_dev_t *local = netdev_priv(dev); @@ -412,54 +383,50 @@ static int ray_config(struct pcmcia_device *link) goto failed; dev->irq = link->irq; - /* This actually configures the PCMCIA socket -- setting up - the I/O windows and the interrupt mapping. - */ - ret = pcmcia_request_configuration(link, &link->conf); + ret = pcmcia_enable_device(link); if (ret) goto failed; /*** Set up 32k window for shared memory (transmit and control) ************/ - req.Attributes = - WIN_DATA_WIDTH_8 | WIN_MEMORY_TYPE_CM | WIN_ENABLE | WIN_USE_WAIT; - req.Base = 0; - req.Size = 0x8000; - req.AccessSpeed = ray_mem_speed; - ret = pcmcia_request_window(link, &req, &link->win); + link->resource[2]->flags |= WIN_DATA_WIDTH_8 | WIN_MEMORY_TYPE_CM | WIN_ENABLE | WIN_USE_WAIT; + link->resource[2]->start = 0; + link->resource[2]->end = 0x8000; + ret = pcmcia_request_window(link, link->resource[2], ray_mem_speed); if (ret) goto failed; - ret = pcmcia_map_mem_page(link, link->win, 0); + ret = pcmcia_map_mem_page(link, link->resource[2], 0); if (ret) goto failed; - local->sram = ioremap(req.Base, req.Size); + local->sram = ioremap(link->resource[2]->start, + resource_size(link->resource[2])); /*** Set up 16k window for shared memory (receive buffer) ***************/ - req.Attributes = + link->resource[3]->flags |= WIN_DATA_WIDTH_8 | WIN_MEMORY_TYPE_CM | WIN_ENABLE | WIN_USE_WAIT; - req.Base = 0; - req.Size = 0x4000; - req.AccessSpeed = ray_mem_speed; - ret = pcmcia_request_window(link, &req, &local->rmem_handle); + link->resource[3]->start = 0; + link->resource[3]->end = 0x4000; + ret = pcmcia_request_window(link, link->resource[3], ray_mem_speed); if (ret) goto failed; - ret = pcmcia_map_mem_page(link, local->rmem_handle, 0x8000); + ret = pcmcia_map_mem_page(link, link->resource[3], 0x8000); if (ret) goto failed; - local->rmem = ioremap(req.Base, req.Size); + local->rmem = ioremap(link->resource[3]->start, + resource_size(link->resource[3])); /*** Set up window for attribute memory ***********************************/ - req.Attributes = + link->resource[4]->flags |= WIN_DATA_WIDTH_8 | WIN_MEMORY_TYPE_AM | WIN_ENABLE | WIN_USE_WAIT; - req.Base = 0; - req.Size = 0x1000; - req.AccessSpeed = ray_mem_speed; - ret = pcmcia_request_window(link, &req, &local->amem_handle); + link->resource[4]->start = 0; + link->resource[4]->end = 0x1000; + ret = pcmcia_request_window(link, link->resource[4], ray_mem_speed); if (ret) goto failed; - ret = pcmcia_map_mem_page(link, local->amem_handle, 0); + ret = pcmcia_map_mem_page(link, link->resource[4], 0); if (ret) goto failed; - local->amem = ioremap(req.Base, req.Size); + local->amem = ioremap(link->resource[4]->start, + resource_size(link->resource[4])); dev_dbg(&link->dev, "ray_config sram=%p\n", local->sram); dev_dbg(&link->dev, "ray_config rmem=%p\n", local->rmem); @@ -775,11 +742,7 @@ static void join_net(u_long data) local->card_status = CARD_DOING_ACQ; } -/*============================================================================ - After a card is removed, ray_release() will unregister the net - device, and release the PCMCIA configuration. If the device is - still open, this will be postponed until it is closed. -=============================================================================*/ + static void ray_release(struct pcmcia_device *link) { struct net_device *dev = link->priv; @@ -2847,9 +2810,7 @@ MODULE_DEVICE_TABLE(pcmcia, ray_ids); static struct pcmcia_driver ray_driver = { .owner = THIS_MODULE, - .drv = { - .name = "ray_cs", - }, + .name = "ray_cs", .probe = ray_probe, .remove = ray_detach, .id_table = ray_ids, diff --git a/drivers/net/wireless/ray_cs.h b/drivers/net/wireless/ray_cs.h index 9f01ddb19748..e79848fbcca1 100644 --- a/drivers/net/wireless/ray_cs.h +++ b/drivers/net/wireless/ray_cs.h @@ -25,8 +25,6 @@ struct beacon_rx { typedef struct ray_dev_t { int card_status; int authentication_state; - window_handle_t amem_handle; /* handle to window for attribute memory */ - window_handle_t rmem_handle; /* handle to window for rx buffer on card */ void __iomem *sram; /* pointer to beginning of shared RAM */ void __iomem *amem; /* pointer to attribute mem window */ void __iomem *rmem; /* pointer to receive buffer window */ diff --git a/drivers/net/wireless/wl3501_cs.c b/drivers/net/wireless/wl3501_cs.c index a1cc2d498a1c..ca3f8961fa27 100644 --- a/drivers/net/wireless/wl3501_cs.c +++ b/drivers/net/wireless/wl3501_cs.c @@ -48,7 +48,6 @@ #include <net/iw_handler.h> -#include <pcmcia/cs.h> #include <pcmcia/cistpl.h> #include <pcmcia/cisreg.h> #include <pcmcia/ds.h> @@ -78,13 +77,6 @@ #define WL3501_RESUME 0 #define WL3501_SUSPEND 1 -/* - * The event() function is this driver's Card Services event handler. It will - * be called by Card Services when an appropriate card status event is - * received. The config() and release() entry points are used to configure or - * release a socket, in response to card insertion and ejection events. They - * are invoked from the wl24 event handler. - */ static int wl3501_config(struct pcmcia_device *link); static void wl3501_release(struct pcmcia_device *link); @@ -1869,15 +1861,6 @@ static const struct net_device_ops wl3501_netdev_ops = { .ndo_validate_addr = eth_validate_addr, }; -/** - * wl3501_attach - creates an "instance" of the driver - * - * Creates an "instance" of the driver, allocating local data structures for - * one device. The device is registered with Card Services. - * - * The dev_link structure is initialized, but we don't actually configure the - * card at this point -- we wait until we receive a card insertion event. - */ static int wl3501_probe(struct pcmcia_device *p_dev) { struct net_device *dev; @@ -1888,9 +1871,8 @@ static int wl3501_probe(struct pcmcia_device *p_dev) p_dev->resource[0]->flags = IO_DATA_PATH_WIDTH_8; /* General socket configuration */ - p_dev->conf.Attributes = CONF_ENABLE_IRQ; - p_dev->conf.IntType = INT_MEMORY_AND_IO; - p_dev->conf.ConfigIndex = 1; + p_dev->config_flags = CONF_ENABLE_IRQ; + p_dev->config_index = 1; dev = alloc_etherdev(sizeof(struct wl3501_card)); if (!dev) @@ -1914,14 +1896,6 @@ out_link: return -ENOMEM; } -/** - * wl3501_config - configure the PCMCIA socket and make eth device available - * @link - FILL_IN - * - * wl3501_config() is scheduled to run after a CARD_INSERTION event is - * received, to configure the PCMCIA socket, and to make the ethernet device - * available to the system. - */ static int wl3501_config(struct pcmcia_device *link) { struct net_device *dev = link->priv; @@ -1952,10 +1926,7 @@ static int wl3501_config(struct pcmcia_device *link) if (ret) goto failed; - /* This actually configures the PCMCIA socket -- setting up the I/O - * windows and the interrupt mapping. */ - - ret = pcmcia_request_configuration(link, &link->conf); + ret = pcmcia_enable_device(link); if (ret) goto failed; @@ -2010,14 +1981,6 @@ failed: return -ENODEV; } -/** - * wl3501_release - unregister the net, release PCMCIA configuration - * @arg - link - * - * After a card is removed, wl3501_release() will unregister the net device, - * and release the PCMCIA configuration. If the device is still open, this - * will be postponed until it is closed. - */ static void wl3501_release(struct pcmcia_device *link) { pcmcia_disable_device(link); @@ -2056,9 +2019,7 @@ MODULE_DEVICE_TABLE(pcmcia, wl3501_ids); static struct pcmcia_driver wl3501_driver = { .owner = THIS_MODULE, - .drv = { - .name = "wl3501_cs", - }, + .name = "wl3501_cs", .probe = wl3501_probe, .remove = wl3501_detach, .id_table = wl3501_ids, diff --git a/drivers/oprofile/oprof.c b/drivers/oprofile/oprof.c index b336cd9ee7a1..f9bda64fcd1b 100644 --- a/drivers/oprofile/oprof.c +++ b/drivers/oprofile/oprof.c @@ -225,26 +225,17 @@ post_sync: mutex_unlock(&start_mutex); } -int oprofile_set_backtrace(unsigned long val) +int oprofile_set_ulong(unsigned long *addr, unsigned long val) { - int err = 0; + int err = -EBUSY; mutex_lock(&start_mutex); - - if (oprofile_started) { - err = -EBUSY; - goto out; - } - - if (!oprofile_ops.backtrace) { - err = -EINVAL; - goto out; + if (!oprofile_started) { + *addr = val; + err = 0; } - - oprofile_backtrace_depth = val; - -out: mutex_unlock(&start_mutex); + return err; } @@ -257,16 +248,9 @@ static int __init oprofile_init(void) printk(KERN_INFO "oprofile: using timer interrupt.\n"); err = oprofile_timer_init(&oprofile_ops); if (err) - goto out_arch; + return err; } - err = oprofilefs_register(); - if (err) - goto out_arch; - return 0; - -out_arch: - oprofile_arch_exit(); - return err; + return oprofilefs_register(); } diff --git a/drivers/oprofile/oprof.h b/drivers/oprofile/oprof.h index 47e12cb4ee8b..177b73de5e5f 100644 --- a/drivers/oprofile/oprof.h +++ b/drivers/oprofile/oprof.h @@ -37,7 +37,7 @@ void oprofile_create_files(struct super_block *sb, struct dentry *root); int oprofile_timer_init(struct oprofile_operations *ops); void oprofile_timer_exit(void); -int oprofile_set_backtrace(unsigned long depth); +int oprofile_set_ulong(unsigned long *addr, unsigned long val); int oprofile_set_timeout(unsigned long time); #endif /* OPROF_H */ diff --git a/drivers/oprofile/oprofile_files.c b/drivers/oprofile/oprofile_files.c index bbd7516e0869..ccf099e684a4 100644 --- a/drivers/oprofile/oprofile_files.c +++ b/drivers/oprofile/oprofile_files.c @@ -79,14 +79,17 @@ static ssize_t depth_write(struct file *file, char const __user *buf, size_t cou if (*offset) return -EINVAL; + if (!oprofile_ops.backtrace) + return -EINVAL; + retval = oprofilefs_ulong_from_user(&val, buf, count); if (retval) return retval; - retval = oprofile_set_backtrace(val); - + retval = oprofile_set_ulong(&oprofile_backtrace_depth, val); if (retval) return retval; + return count; } diff --git a/drivers/oprofile/oprofile_perf.c b/drivers/oprofile/oprofile_perf.c new file mode 100644 index 000000000000..9046f7b2ed79 --- /dev/null +++ b/drivers/oprofile/oprofile_perf.c @@ -0,0 +1,328 @@ +/* + * Copyright 2010 ARM Ltd. + * + * Perf-events backend for OProfile. + */ +#include <linux/perf_event.h> +#include <linux/platform_device.h> +#include <linux/oprofile.h> +#include <linux/slab.h> + +/* + * Per performance monitor configuration as set via oprofilefs. + */ +struct op_counter_config { + unsigned long count; + unsigned long enabled; + unsigned long event; + unsigned long unit_mask; + unsigned long kernel; + unsigned long user; + struct perf_event_attr attr; +}; + +static int oprofile_perf_enabled; +static DEFINE_MUTEX(oprofile_perf_mutex); + +static struct op_counter_config *counter_config; +static struct perf_event **perf_events[nr_cpumask_bits]; +static int num_counters; + +/* + * Overflow callback for oprofile. + */ +static void op_overflow_handler(struct perf_event *event, int unused, + struct perf_sample_data *data, struct pt_regs *regs) +{ + int id; + u32 cpu = smp_processor_id(); + + for (id = 0; id < num_counters; ++id) + if (perf_events[cpu][id] == event) + break; + + if (id != num_counters) + oprofile_add_sample(regs, id); + else + pr_warning("oprofile: ignoring spurious overflow " + "on cpu %u\n", cpu); +} + +/* + * Called by oprofile_perf_setup to create perf attributes to mirror the oprofile + * settings in counter_config. Attributes are created as `pinned' events and + * so are permanently scheduled on the PMU. + */ +static void op_perf_setup(void) +{ + int i; + u32 size = sizeof(struct perf_event_attr); + struct perf_event_attr *attr; + + for (i = 0; i < num_counters; ++i) { + attr = &counter_config[i].attr; + memset(attr, 0, size); + attr->type = PERF_TYPE_RAW; + attr->size = size; + attr->config = counter_config[i].event; + attr->sample_period = counter_config[i].count; + attr->pinned = 1; + } +} + +static int op_create_counter(int cpu, int event) +{ + struct perf_event *pevent; + + if (!counter_config[event].enabled || perf_events[cpu][event]) + return 0; + + pevent = perf_event_create_kernel_counter(&counter_config[event].attr, + cpu, NULL, + op_overflow_handler); + + if (IS_ERR(pevent)) + return PTR_ERR(pevent); + + if (pevent->state != PERF_EVENT_STATE_ACTIVE) { + perf_event_release_kernel(pevent); + pr_warning("oprofile: failed to enable event %d " + "on CPU %d\n", event, cpu); + return -EBUSY; + } + + perf_events[cpu][event] = pevent; + + return 0; +} + +static void op_destroy_counter(int cpu, int event) +{ + struct perf_event *pevent = perf_events[cpu][event]; + + if (pevent) { + perf_event_release_kernel(pevent); + perf_events[cpu][event] = NULL; + } +} + +/* + * Called by oprofile_perf_start to create active perf events based on the + * perviously configured attributes. + */ +static int op_perf_start(void) +{ + int cpu, event, ret = 0; + + for_each_online_cpu(cpu) { + for (event = 0; event < num_counters; ++event) { + ret = op_create_counter(cpu, event); + if (ret) + return ret; + } + } + + return ret; +} + +/* + * Called by oprofile_perf_stop at the end of a profiling run. + */ +static void op_perf_stop(void) +{ + int cpu, event; + + for_each_online_cpu(cpu) + for (event = 0; event < num_counters; ++event) + op_destroy_counter(cpu, event); +} + +static int oprofile_perf_create_files(struct super_block *sb, struct dentry *root) +{ + unsigned int i; + + for (i = 0; i < num_counters; i++) { + struct dentry *dir; + char buf[4]; + + snprintf(buf, sizeof buf, "%d", i); + dir = oprofilefs_mkdir(sb, root, buf); + oprofilefs_create_ulong(sb, dir, "enabled", &counter_config[i].enabled); + oprofilefs_create_ulong(sb, dir, "event", &counter_config[i].event); + oprofilefs_create_ulong(sb, dir, "count", &counter_config[i].count); + oprofilefs_create_ulong(sb, dir, "unit_mask", &counter_config[i].unit_mask); + oprofilefs_create_ulong(sb, dir, "kernel", &counter_config[i].kernel); + oprofilefs_create_ulong(sb, dir, "user", &counter_config[i].user); + } + + return 0; +} + +static int oprofile_perf_setup(void) +{ + spin_lock(&oprofilefs_lock); + op_perf_setup(); + spin_unlock(&oprofilefs_lock); + return 0; +} + +static int oprofile_perf_start(void) +{ + int ret = -EBUSY; + + mutex_lock(&oprofile_perf_mutex); + if (!oprofile_perf_enabled) { + ret = 0; + op_perf_start(); + oprofile_perf_enabled = 1; + } + mutex_unlock(&oprofile_perf_mutex); + return ret; +} + +static void oprofile_perf_stop(void) +{ + mutex_lock(&oprofile_perf_mutex); + if (oprofile_perf_enabled) + op_perf_stop(); + oprofile_perf_enabled = 0; + mutex_unlock(&oprofile_perf_mutex); +} + +#ifdef CONFIG_PM + +static int oprofile_perf_suspend(struct platform_device *dev, pm_message_t state) +{ + mutex_lock(&oprofile_perf_mutex); + if (oprofile_perf_enabled) + op_perf_stop(); + mutex_unlock(&oprofile_perf_mutex); + return 0; +} + +static int oprofile_perf_resume(struct platform_device *dev) +{ + mutex_lock(&oprofile_perf_mutex); + if (oprofile_perf_enabled && op_perf_start()) + oprofile_perf_enabled = 0; + mutex_unlock(&oprofile_perf_mutex); + return 0; +} + +static struct platform_driver oprofile_driver = { + .driver = { + .name = "oprofile-perf", + }, + .resume = oprofile_perf_resume, + .suspend = oprofile_perf_suspend, +}; + +static struct platform_device *oprofile_pdev; + +static int __init init_driverfs(void) +{ + int ret; + + ret = platform_driver_register(&oprofile_driver); + if (ret) + return ret; + + oprofile_pdev = platform_device_register_simple( + oprofile_driver.driver.name, 0, NULL, 0); + if (IS_ERR(oprofile_pdev)) { + ret = PTR_ERR(oprofile_pdev); + platform_driver_unregister(&oprofile_driver); + } + + return ret; +} + +static void exit_driverfs(void) +{ + platform_device_unregister(oprofile_pdev); + platform_driver_unregister(&oprofile_driver); +} + +#else + +static inline int init_driverfs(void) { return 0; } +static inline void exit_driverfs(void) { } + +#endif /* CONFIG_PM */ + +void oprofile_perf_exit(void) +{ + int cpu, id; + struct perf_event *event; + + for_each_possible_cpu(cpu) { + for (id = 0; id < num_counters; ++id) { + event = perf_events[cpu][id]; + if (event) + perf_event_release_kernel(event); + } + + kfree(perf_events[cpu]); + } + + kfree(counter_config); + exit_driverfs(); +} + +int __init oprofile_perf_init(struct oprofile_operations *ops) +{ + int cpu, ret = 0; + + ret = init_driverfs(); + if (ret) + return ret; + + memset(&perf_events, 0, sizeof(perf_events)); + + num_counters = perf_num_counters(); + if (num_counters <= 0) { + pr_info("oprofile: no performance counters\n"); + ret = -ENODEV; + goto out; + } + + counter_config = kcalloc(num_counters, + sizeof(struct op_counter_config), GFP_KERNEL); + + if (!counter_config) { + pr_info("oprofile: failed to allocate %d " + "counters\n", num_counters); + ret = -ENOMEM; + num_counters = 0; + goto out; + } + + for_each_possible_cpu(cpu) { + perf_events[cpu] = kcalloc(num_counters, + sizeof(struct perf_event *), GFP_KERNEL); + if (!perf_events[cpu]) { + pr_info("oprofile: failed to allocate %d perf events " + "for cpu %d\n", num_counters, cpu); + ret = -ENOMEM; + goto out; + } + } + + ops->create_files = oprofile_perf_create_files; + ops->setup = oprofile_perf_setup; + ops->start = oprofile_perf_start; + ops->stop = oprofile_perf_stop; + ops->shutdown = oprofile_perf_stop; + ops->cpu_type = op_name_from_perf_id(); + + if (!ops->cpu_type) + ret = -ENODEV; + else + pr_info("oprofile: using %s\n", ops->cpu_type); + +out: + if (ret) + oprofile_perf_exit(); + + return ret; +} diff --git a/drivers/oprofile/oprofilefs.c b/drivers/oprofile/oprofilefs.c index 2766a6d3c2e9..1944621930d9 100644 --- a/drivers/oprofile/oprofilefs.c +++ b/drivers/oprofile/oprofilefs.c @@ -91,16 +91,20 @@ static ssize_t ulong_read_file(struct file *file, char __user *buf, size_t count static ssize_t ulong_write_file(struct file *file, char const __user *buf, size_t count, loff_t *offset) { - unsigned long *value = file->private_data; + unsigned long value; int retval; if (*offset) return -EINVAL; - retval = oprofilefs_ulong_from_user(value, buf, count); + retval = oprofilefs_ulong_from_user(&value, buf, count); + if (retval) + return retval; + retval = oprofile_set_ulong(file->private_data, value); if (retval) return retval; + return count; } @@ -126,50 +130,41 @@ static const struct file_operations ulong_ro_fops = { }; -static struct dentry *__oprofilefs_create_file(struct super_block *sb, +static int __oprofilefs_create_file(struct super_block *sb, struct dentry *root, char const *name, const struct file_operations *fops, - int perm) + int perm, void *priv) { struct dentry *dentry; struct inode *inode; dentry = d_alloc_name(root, name); if (!dentry) - return NULL; + return -ENOMEM; inode = oprofilefs_get_inode(sb, S_IFREG | perm); if (!inode) { dput(dentry); - return NULL; + return -ENOMEM; } inode->i_fop = fops; d_add(dentry, inode); - return dentry; + dentry->d_inode->i_private = priv; + return 0; } int oprofilefs_create_ulong(struct super_block *sb, struct dentry *root, char const *name, unsigned long *val) { - struct dentry *d = __oprofilefs_create_file(sb, root, name, - &ulong_fops, 0644); - if (!d) - return -EFAULT; - - d->d_inode->i_private = val; - return 0; + return __oprofilefs_create_file(sb, root, name, + &ulong_fops, 0644, val); } int oprofilefs_create_ro_ulong(struct super_block *sb, struct dentry *root, char const *name, unsigned long *val) { - struct dentry *d = __oprofilefs_create_file(sb, root, name, - &ulong_ro_fops, 0444); - if (!d) - return -EFAULT; - - d->d_inode->i_private = val; - return 0; + return __oprofilefs_create_file(sb, root, name, + &ulong_ro_fops, 0444, val); } @@ -189,31 +184,22 @@ static const struct file_operations atomic_ro_fops = { int oprofilefs_create_ro_atomic(struct super_block *sb, struct dentry *root, char const *name, atomic_t *val) { - struct dentry *d = __oprofilefs_create_file(sb, root, name, - &atomic_ro_fops, 0444); - if (!d) - return -EFAULT; - - d->d_inode->i_private = val; - return 0; + return __oprofilefs_create_file(sb, root, name, + &atomic_ro_fops, 0444, val); } int oprofilefs_create_file(struct super_block *sb, struct dentry *root, char const *name, const struct file_operations *fops) { - if (!__oprofilefs_create_file(sb, root, name, fops, 0644)) - return -EFAULT; - return 0; + return __oprofilefs_create_file(sb, root, name, fops, 0644, NULL); } int oprofilefs_create_file_perm(struct super_block *sb, struct dentry *root, char const *name, const struct file_operations *fops, int perm) { - if (!__oprofilefs_create_file(sb, root, name, fops, perm)) - return -EFAULT; - return 0; + return __oprofilefs_create_file(sb, root, name, fops, perm, NULL); } diff --git a/drivers/parport/parport_cs.c b/drivers/parport/parport_cs.c index 23e50f4a27c5..787ebdeae310 100644 --- a/drivers/parport/parport_cs.c +++ b/drivers/parport/parport_cs.c @@ -48,7 +48,6 @@ #include <linux/parport.h> #include <linux/parport_pc.h> -#include <pcmcia/cs.h> #include <pcmcia/cistpl.h> #include <pcmcia/ds.h> #include <pcmcia/cisreg.h> @@ -81,14 +80,6 @@ static void parport_detach(struct pcmcia_device *p_dev); static int parport_config(struct pcmcia_device *link); static void parport_cs_release(struct pcmcia_device *); -/*====================================================================== - - parport_attach() creates an "instance" of the driver, allocating - local data structures for one device. The device is registered - with Card Services. - -======================================================================*/ - static int parport_probe(struct pcmcia_device *link) { parport_info_t *info; @@ -101,23 +92,11 @@ static int parport_probe(struct pcmcia_device *link) link->priv = info; info->p_dev = link; - link->resource[0]->flags |= IO_DATA_PATH_WIDTH_8; - link->resource[1]->flags |= IO_DATA_PATH_WIDTH_8; - link->conf.Attributes = CONF_ENABLE_IRQ; - link->conf.IntType = INT_MEMORY_AND_IO; + link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_IO; return parport_config(link); } /* parport_attach */ -/*====================================================================== - - This deletes a driver "instance". The device is de-registered - with Card Services. If it has been released, all local data - structures are freed. Otherwise, the structures will be freed - when the device is released. - -======================================================================*/ - static void parport_detach(struct pcmcia_device *link) { dev_dbg(&link->dev, "parport_detach\n"); @@ -127,36 +106,14 @@ static void parport_detach(struct pcmcia_device *link) kfree(link->priv); } /* parport_detach */ -/*====================================================================== - - parport_config() is scheduled to run after a CARD_INSERTION event - is received, to configure the PCMCIA socket, and to make the - parport device available to the system. - -======================================================================*/ - -static int parport_config_check(struct pcmcia_device *p_dev, - cistpl_cftable_entry_t *cfg, - cistpl_cftable_entry_t *dflt, - unsigned int vcc, - void *priv_data) +static int parport_config_check(struct pcmcia_device *p_dev, void *priv_data) { - if ((cfg->io.nwin > 0) || (dflt->io.nwin > 0)) { - cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &dflt->io; - p_dev->io_lines = io->flags & CISTPL_IO_LINES_MASK; - if (epp_mode) - p_dev->conf.ConfigIndex |= FORCE_EPP_MODE; - p_dev->resource[0]->start = io->win[0].base; - p_dev->resource[0]->end = io->win[0].len; - if (io->nwin == 2) { - p_dev->resource[1]->start = io->win[1].base; - p_dev->resource[1]->end = io->win[1].len; - } - if (pcmcia_request_io(p_dev) != 0) - return -ENODEV; - return 0; - } - return -ENODEV; + p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH; + p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_8; + p_dev->resource[1]->flags &= ~IO_DATA_PATH_WIDTH; + p_dev->resource[1]->flags |= IO_DATA_PATH_WIDTH_8; + + return pcmcia_request_io(p_dev); } static int parport_config(struct pcmcia_device *link) @@ -167,13 +124,16 @@ static int parport_config(struct pcmcia_device *link) dev_dbg(&link->dev, "parport_config\n"); + if (epp_mode) + link->config_index |= FORCE_EPP_MODE; + ret = pcmcia_loop_config(link, parport_config_check, NULL); if (ret) goto failed; if (!link->irq) goto failed; - ret = pcmcia_request_configuration(link, &link->conf); + ret = pcmcia_enable_device(link); if (ret) goto failed; @@ -202,14 +162,6 @@ failed: return -ENODEV; } /* parport_config */ -/*====================================================================== - - After a card is removed, parport_cs_release() will unregister the - device, and release the PCMCIA configuration. If the device is - still open, this will be postponed until it is closed. - -======================================================================*/ - static void parport_cs_release(struct pcmcia_device *link) { parport_info_t *info = link->priv; @@ -236,9 +188,7 @@ MODULE_DEVICE_TABLE(pcmcia, parport_ids); static struct pcmcia_driver parport_cs_driver = { .owner = THIS_MODULE, - .drv = { - .name = "parport_cs", - }, + .name = "parport_cs", .probe = parport_probe, .remove = parport_detach, .id_table = parport_ids, diff --git a/drivers/parport/share.c b/drivers/parport/share.c index dffa5d4fb298..a2d9d1e59260 100644 --- a/drivers/parport/share.c +++ b/drivers/parport/share.c @@ -306,7 +306,7 @@ struct parport *parport_register_port(unsigned long base, int irq, int dma, spin_lock_init(&tmp->pardevice_lock); tmp->ieee1284.mode = IEEE1284_MODE_COMPAT; tmp->ieee1284.phase = IEEE1284_PH_FWD_IDLE; - init_MUTEX_LOCKED (&tmp->ieee1284.irq); /* actually a semaphore at 0 */ + sema_init(&tmp->ieee1284.irq, 0); tmp->spintime = parport_default_spintime; atomic_set (&tmp->ref_count, 1); INIT_LIST_HEAD(&tmp->full_list); diff --git a/drivers/pci/dmar.c b/drivers/pci/dmar.c index 0a19708074c2..0157708d474d 100644 --- a/drivers/pci/dmar.c +++ b/drivers/pci/dmar.c @@ -36,6 +36,7 @@ #include <linux/tboot.h> #include <linux/dmi.h> #include <linux/slab.h> +#include <asm/iommu_table.h> #define PREFIX "DMAR: " @@ -687,7 +688,7 @@ failed: return 0; } -void __init detect_intel_iommu(void) +int __init detect_intel_iommu(void) { int ret; @@ -723,6 +724,8 @@ void __init detect_intel_iommu(void) } early_acpi_os_unmap_memory(dmar_tbl, dmar_tbl_size); dmar_tbl = NULL; + + return ret ? 1 : -ENODEV; } @@ -1221,9 +1224,9 @@ const char *dmar_get_fault_reason(u8 fault_reason, int *fault_type) } } -void dmar_msi_unmask(unsigned int irq) +void dmar_msi_unmask(struct irq_data *data) { - struct intel_iommu *iommu = get_irq_data(irq); + struct intel_iommu *iommu = irq_data_get_irq_data(data); unsigned long flag; /* unmask it */ @@ -1234,10 +1237,10 @@ void dmar_msi_unmask(unsigned int irq) spin_unlock_irqrestore(&iommu->register_lock, flag); } -void dmar_msi_mask(unsigned int irq) +void dmar_msi_mask(struct irq_data *data) { unsigned long flag; - struct intel_iommu *iommu = get_irq_data(irq); + struct intel_iommu *iommu = irq_data_get_irq_data(data); /* mask it */ spin_lock_irqsave(&iommu->register_lock, flag); @@ -1455,3 +1458,4 @@ int __init dmar_ir_support(void) return 0; return dmar->flags & 0x1; } +IOMMU_INIT_POST(detect_intel_iommu); diff --git a/drivers/pci/htirq.c b/drivers/pci/htirq.c index 98abf8b91294..834842aa5bbf 100644 --- a/drivers/pci/htirq.c +++ b/drivers/pci/htirq.c @@ -57,28 +57,22 @@ void fetch_ht_irq_msg(unsigned int irq, struct ht_irq_msg *msg) *msg = cfg->msg; } -void mask_ht_irq(unsigned int irq) +void mask_ht_irq(struct irq_data *data) { - struct ht_irq_cfg *cfg; - struct ht_irq_msg msg; - - cfg = get_irq_data(irq); + struct ht_irq_cfg *cfg = irq_data_get_irq_data(data); + struct ht_irq_msg msg = cfg->msg; - msg = cfg->msg; msg.address_lo |= 1; - write_ht_irq_msg(irq, &msg); + write_ht_irq_msg(data->irq, &msg); } -void unmask_ht_irq(unsigned int irq) +void unmask_ht_irq(struct irq_data *data) { - struct ht_irq_cfg *cfg; - struct ht_irq_msg msg; - - cfg = get_irq_data(irq); + struct ht_irq_cfg *cfg = irq_data_get_irq_data(data); + struct ht_irq_msg msg = cfg->msg; - msg = cfg->msg; msg.address_lo &= ~1; - write_ht_irq_msg(irq, &msg); + write_ht_irq_msg(data->irq, &msg); } /** diff --git a/drivers/pci/intr_remapping.c b/drivers/pci/intr_remapping.c index fd1d2867cdcc..ec87cd66f3eb 100644 --- a/drivers/pci/intr_remapping.c +++ b/drivers/pci/intr_remapping.c @@ -46,109 +46,24 @@ static __init int setup_intremap(char *str) } early_param("intremap", setup_intremap); -struct irq_2_iommu { - struct intel_iommu *iommu; - u16 irte_index; - u16 sub_handle; - u8 irte_mask; -}; - -#ifdef CONFIG_GENERIC_HARDIRQS -static struct irq_2_iommu *get_one_free_irq_2_iommu(int node) -{ - struct irq_2_iommu *iommu; - - iommu = kzalloc_node(sizeof(*iommu), GFP_ATOMIC, node); - printk(KERN_DEBUG "alloc irq_2_iommu on node %d\n", node); - - return iommu; -} - -static struct irq_2_iommu *irq_2_iommu(unsigned int irq) -{ - struct irq_desc *desc; - - desc = irq_to_desc(irq); - - if (WARN_ON_ONCE(!desc)) - return NULL; - - return desc->irq_2_iommu; -} - -static struct irq_2_iommu *irq_2_iommu_alloc(unsigned int irq) -{ - struct irq_desc *desc; - struct irq_2_iommu *irq_iommu; - - desc = irq_to_desc(irq); - if (!desc) { - printk(KERN_INFO "can not get irq_desc for %d\n", irq); - return NULL; - } - - irq_iommu = desc->irq_2_iommu; - - if (!irq_iommu) - desc->irq_2_iommu = get_one_free_irq_2_iommu(irq_node(irq)); - - return desc->irq_2_iommu; -} - -#else /* !CONFIG_SPARSE_IRQ */ - -static struct irq_2_iommu irq_2_iommuX[NR_IRQS]; - -static struct irq_2_iommu *irq_2_iommu(unsigned int irq) -{ - if (irq < nr_irqs) - return &irq_2_iommuX[irq]; - - return NULL; -} -static struct irq_2_iommu *irq_2_iommu_alloc(unsigned int irq) -{ - return irq_2_iommu(irq); -} -#endif - static DEFINE_SPINLOCK(irq_2_ir_lock); -static struct irq_2_iommu *valid_irq_2_iommu(unsigned int irq) -{ - struct irq_2_iommu *irq_iommu; - - irq_iommu = irq_2_iommu(irq); - - if (!irq_iommu) - return NULL; - - if (!irq_iommu->iommu) - return NULL; - - return irq_iommu; -} - -int irq_remapped(int irq) +static struct irq_2_iommu *irq_2_iommu(unsigned int irq) { - return valid_irq_2_iommu(irq) != NULL; + struct irq_cfg *cfg = get_irq_chip_data(irq); + return cfg ? &cfg->irq_2_iommu : NULL; } int get_irte(int irq, struct irte *entry) { - int index; - struct irq_2_iommu *irq_iommu; + struct irq_2_iommu *irq_iommu = irq_2_iommu(irq); unsigned long flags; + int index; - if (!entry) + if (!entry || !irq_iommu) return -1; spin_lock_irqsave(&irq_2_ir_lock, flags); - irq_iommu = valid_irq_2_iommu(irq); - if (!irq_iommu) { - spin_unlock_irqrestore(&irq_2_ir_lock, flags); - return -1; - } index = irq_iommu->irte_index + irq_iommu->sub_handle; *entry = *(irq_iommu->iommu->ir_table->base + index); @@ -160,20 +75,14 @@ int get_irte(int irq, struct irte *entry) int alloc_irte(struct intel_iommu *iommu, int irq, u16 count) { struct ir_table *table = iommu->ir_table; - struct irq_2_iommu *irq_iommu; + struct irq_2_iommu *irq_iommu = irq_2_iommu(irq); u16 index, start_index; unsigned int mask = 0; unsigned long flags; int i; - if (!count) - return -1; - -#ifndef CONFIG_SPARSE_IRQ - /* protect irq_2_iommu_alloc later */ - if (irq >= nr_irqs) + if (!count || !irq_iommu) return -1; -#endif /* * start the IRTE search from index 0. @@ -214,13 +123,6 @@ int alloc_irte(struct intel_iommu *iommu, int irq, u16 count) for (i = index; i < index + count; i++) table->base[i].present = 1; - irq_iommu = irq_2_iommu_alloc(irq); - if (!irq_iommu) { - spin_unlock_irqrestore(&irq_2_ir_lock, flags); - printk(KERN_ERR "can't allocate irq_2_iommu\n"); - return -1; - } - irq_iommu->iommu = iommu; irq_iommu->irte_index = index; irq_iommu->sub_handle = 0; @@ -244,17 +146,14 @@ static int qi_flush_iec(struct intel_iommu *iommu, int index, int mask) int map_irq_to_irte_handle(int irq, u16 *sub_handle) { - int index; - struct irq_2_iommu *irq_iommu; + struct irq_2_iommu *irq_iommu = irq_2_iommu(irq); unsigned long flags; + int index; - spin_lock_irqsave(&irq_2_ir_lock, flags); - irq_iommu = valid_irq_2_iommu(irq); - if (!irq_iommu) { - spin_unlock_irqrestore(&irq_2_ir_lock, flags); + if (!irq_iommu) return -1; - } + spin_lock_irqsave(&irq_2_ir_lock, flags); *sub_handle = irq_iommu->sub_handle; index = irq_iommu->irte_index; spin_unlock_irqrestore(&irq_2_ir_lock, flags); @@ -263,18 +162,13 @@ int map_irq_to_irte_handle(int irq, u16 *sub_handle) int set_irte_irq(int irq, struct intel_iommu *iommu, u16 index, u16 subhandle) { - struct irq_2_iommu *irq_iommu; + struct irq_2_iommu *irq_iommu = irq_2_iommu(irq); unsigned long flags; - spin_lock_irqsave(&irq_2_ir_lock, flags); - - irq_iommu = irq_2_iommu_alloc(irq); - - if (!irq_iommu) { - spin_unlock_irqrestore(&irq_2_ir_lock, flags); - printk(KERN_ERR "can't allocate irq_2_iommu\n"); + if (!irq_iommu) return -1; - } + + spin_lock_irqsave(&irq_2_ir_lock, flags); irq_iommu->iommu = iommu; irq_iommu->irte_index = index; @@ -286,43 +180,18 @@ int set_irte_irq(int irq, struct intel_iommu *iommu, u16 index, u16 subhandle) return 0; } -int clear_irte_irq(int irq, struct intel_iommu *iommu, u16 index) -{ - struct irq_2_iommu *irq_iommu; - unsigned long flags; - - spin_lock_irqsave(&irq_2_ir_lock, flags); - irq_iommu = valid_irq_2_iommu(irq); - if (!irq_iommu) { - spin_unlock_irqrestore(&irq_2_ir_lock, flags); - return -1; - } - - irq_iommu->iommu = NULL; - irq_iommu->irte_index = 0; - irq_iommu->sub_handle = 0; - irq_2_iommu(irq)->irte_mask = 0; - - spin_unlock_irqrestore(&irq_2_ir_lock, flags); - - return 0; -} - int modify_irte(int irq, struct irte *irte_modified) { - int rc; - int index; - struct irte *irte; + struct irq_2_iommu *irq_iommu = irq_2_iommu(irq); struct intel_iommu *iommu; - struct irq_2_iommu *irq_iommu; unsigned long flags; + struct irte *irte; + int rc, index; - spin_lock_irqsave(&irq_2_ir_lock, flags); - irq_iommu = valid_irq_2_iommu(irq); - if (!irq_iommu) { - spin_unlock_irqrestore(&irq_2_ir_lock, flags); + if (!irq_iommu) return -1; - } + + spin_lock_irqsave(&irq_2_ir_lock, flags); iommu = irq_iommu->iommu; @@ -339,31 +208,6 @@ int modify_irte(int irq, struct irte *irte_modified) return rc; } -int flush_irte(int irq) -{ - int rc; - int index; - struct intel_iommu *iommu; - struct irq_2_iommu *irq_iommu; - unsigned long flags; - - spin_lock_irqsave(&irq_2_ir_lock, flags); - irq_iommu = valid_irq_2_iommu(irq); - if (!irq_iommu) { - spin_unlock_irqrestore(&irq_2_ir_lock, flags); - return -1; - } - - iommu = irq_iommu->iommu; - - index = irq_iommu->irte_index + irq_iommu->sub_handle; - - rc = qi_flush_iec(iommu, index, irq_iommu->irte_mask); - spin_unlock_irqrestore(&irq_2_ir_lock, flags); - - return rc; -} - struct intel_iommu *map_hpet_to_ir(u8 hpet_id) { int i; @@ -420,16 +264,14 @@ static int clear_entries(struct irq_2_iommu *irq_iommu) int free_irte(int irq) { - int rc = 0; - struct irq_2_iommu *irq_iommu; + struct irq_2_iommu *irq_iommu = irq_2_iommu(irq); unsigned long flags; + int rc; - spin_lock_irqsave(&irq_2_ir_lock, flags); - irq_iommu = valid_irq_2_iommu(irq); - if (!irq_iommu) { - spin_unlock_irqrestore(&irq_2_ir_lock, flags); + if (!irq_iommu) return -1; - } + + spin_lock_irqsave(&irq_2_ir_lock, flags); rc = clear_entries(irq_iommu); diff --git a/drivers/pci/msi.c b/drivers/pci/msi.c index 69b7be33b3a2..5fcf5aec680f 100644 --- a/drivers/pci/msi.c +++ b/drivers/pci/msi.c @@ -170,33 +170,31 @@ static void msix_mask_irq(struct msi_desc *desc, u32 flag) desc->masked = __msix_mask_irq(desc, flag); } -static void msi_set_mask_bit(unsigned irq, u32 flag) +static void msi_set_mask_bit(struct irq_data *data, u32 flag) { - struct msi_desc *desc = get_irq_msi(irq); + struct msi_desc *desc = irq_data_get_msi(data); if (desc->msi_attrib.is_msix) { msix_mask_irq(desc, flag); readl(desc->mask_base); /* Flush write to device */ } else { - unsigned offset = irq - desc->dev->irq; + unsigned offset = data->irq - desc->dev->irq; msi_mask_irq(desc, 1 << offset, flag << offset); } } -void mask_msi_irq(unsigned int irq) +void mask_msi_irq(struct irq_data *data) { - msi_set_mask_bit(irq, 1); + msi_set_mask_bit(data, 1); } -void unmask_msi_irq(unsigned int irq) +void unmask_msi_irq(struct irq_data *data) { - msi_set_mask_bit(irq, 0); + msi_set_mask_bit(data, 0); } -void read_msi_msg_desc(struct irq_desc *desc, struct msi_msg *msg) +void __read_msi_msg(struct msi_desc *entry, struct msi_msg *msg) { - struct msi_desc *entry = get_irq_desc_msi(desc); - BUG_ON(entry->dev->current_state != PCI_D0); if (entry->msi_attrib.is_msix) { @@ -227,15 +225,13 @@ void read_msi_msg_desc(struct irq_desc *desc, struct msi_msg *msg) void read_msi_msg(unsigned int irq, struct msi_msg *msg) { - struct irq_desc *desc = irq_to_desc(irq); + struct msi_desc *entry = get_irq_msi(irq); - read_msi_msg_desc(desc, msg); + __read_msi_msg(entry, msg); } -void get_cached_msi_msg_desc(struct irq_desc *desc, struct msi_msg *msg) +void __get_cached_msi_msg(struct msi_desc *entry, struct msi_msg *msg) { - struct msi_desc *entry = get_irq_desc_msi(desc); - /* Assert that the cache is valid, assuming that * valid messages are not all-zeroes. */ BUG_ON(!(entry->msg.address_hi | entry->msg.address_lo | @@ -246,15 +242,13 @@ void get_cached_msi_msg_desc(struct irq_desc *desc, struct msi_msg *msg) void get_cached_msi_msg(unsigned int irq, struct msi_msg *msg) { - struct irq_desc *desc = irq_to_desc(irq); + struct msi_desc *entry = get_irq_msi(irq); - get_cached_msi_msg_desc(desc, msg); + __get_cached_msi_msg(entry, msg); } -void write_msi_msg_desc(struct irq_desc *desc, struct msi_msg *msg) +void __write_msi_msg(struct msi_desc *entry, struct msi_msg *msg) { - struct msi_desc *entry = get_irq_desc_msi(desc); - if (entry->dev->current_state != PCI_D0) { /* Don't touch the hardware now */ } else if (entry->msi_attrib.is_msix) { @@ -292,9 +286,9 @@ void write_msi_msg_desc(struct irq_desc *desc, struct msi_msg *msg) void write_msi_msg(unsigned int irq, struct msi_msg *msg) { - struct irq_desc *desc = irq_to_desc(irq); + struct msi_desc *entry = get_irq_msi(irq); - write_msi_msg_desc(desc, msg); + __write_msi_msg(entry, msg); } static void free_msi_irqs(struct pci_dev *dev) diff --git a/drivers/pcmcia/au1000_generic.c b/drivers/pcmcia/au1000_generic.c index 88c4c4098789..95dd7c62741f 100644 --- a/drivers/pcmcia/au1000_generic.c +++ b/drivers/pcmcia/au1000_generic.c @@ -441,14 +441,12 @@ int au1x00_pcmcia_socket_probe(struct device *dev, struct pcmcia_low_level *ops, out_err: - flush_scheduled_work(); ops->hw_shutdown(skt); while (i-- > 0) { skt = PCMCIA_SOCKET(i); del_timer_sync(&skt->poll_timer); pcmcia_unregister_socket(&skt->socket); - flush_scheduled_work(); if (i == 0) { iounmap(skt->virt_io + (u32)mips_io_port_base); skt->virt_io = NULL; @@ -480,7 +478,6 @@ int au1x00_drv_pcmcia_remove(struct platform_device *dev) del_timer_sync(&skt->poll_timer); pcmcia_unregister_socket(&skt->socket); - flush_scheduled_work(); skt->ops->hw_shutdown(skt); au1x00_pcmcia_config_skt(skt, &dead_socket); iounmap(skt->virt_io + (u32)mips_io_port_base); diff --git a/drivers/pcmcia/au1000_generic.h b/drivers/pcmcia/au1000_generic.h index 67530cefcf3c..5c36bda2963b 100644 --- a/drivers/pcmcia/au1000_generic.h +++ b/drivers/pcmcia/au1000_generic.h @@ -23,7 +23,6 @@ /* include the world */ -#include <pcmcia/cs.h> #include <pcmcia/ss.h> #include <pcmcia/cistpl.h> #include "cs_internal.h" diff --git a/drivers/pcmcia/au1000_pb1x00.c b/drivers/pcmcia/au1000_pb1x00.c index 807f2d75dad3..b2396647a165 100644 --- a/drivers/pcmcia/au1000_pb1x00.c +++ b/drivers/pcmcia/au1000_pb1x00.c @@ -31,7 +31,6 @@ #include <linux/proc_fs.h> #include <linux/types.h> -#include <pcmcia/cs.h> #include <pcmcia/ss.h> #include <pcmcia/cistpl.h> diff --git a/drivers/pcmcia/cistpl.c b/drivers/pcmcia/cistpl.c index 91414a0ddc44..884a984216fe 100644 --- a/drivers/pcmcia/cistpl.c +++ b/drivers/pcmcia/cistpl.c @@ -28,7 +28,6 @@ #include <asm/unaligned.h> #include <pcmcia/ss.h> -#include <pcmcia/cs.h> #include <pcmcia/cisreg.h> #include <pcmcia/cistpl.h> #include "cs_internal.h" diff --git a/drivers/pcmcia/cs.c b/drivers/pcmcia/cs.c index 2ec8ac97445c..d9ea192c4001 100644 --- a/drivers/pcmcia/cs.c +++ b/drivers/pcmcia/cs.c @@ -33,7 +33,6 @@ #include <asm/irq.h> #include <pcmcia/ss.h> -#include <pcmcia/cs.h> #include <pcmcia/cistpl.h> #include <pcmcia/cisreg.h> #include <pcmcia/ds.h> @@ -845,7 +844,7 @@ static int pcmcia_socket_dev_resume_noirq(struct device *dev) return __pcmcia_pm_op(dev, socket_early_resume); } -static int pcmcia_socket_dev_resume(struct device *dev) +static int __used pcmcia_socket_dev_resume(struct device *dev) { return __pcmcia_pm_op(dev, socket_late_resume); } diff --git a/drivers/pcmcia/cs_internal.h b/drivers/pcmcia/cs_internal.h index da055dc14d98..7f1953f78b12 100644 --- a/drivers/pcmcia/cs_internal.h +++ b/drivers/pcmcia/cs_internal.h @@ -33,18 +33,9 @@ typedef struct config_t { struct kref ref; unsigned int state; - unsigned int Attributes; - unsigned int IntType; - unsigned int ConfigBase; - unsigned char Status, Pin, Copy, Option, ExtStatus; - unsigned int CardValues; struct resource io[MAX_IO_WIN]; /* io ports */ struct resource mem[MAX_WIN]; /* mem areas */ - - struct { - u_int Attributes; - } irq; } config_t; diff --git a/drivers/pcmcia/ds.c b/drivers/pcmcia/ds.c index 55570d9e1e4c..100c4412457d 100644 --- a/drivers/pcmcia/ds.c +++ b/drivers/pcmcia/ds.c @@ -26,7 +26,6 @@ #include <linux/dma-mapping.h> #include <linux/slab.h> -#include <pcmcia/cs.h> #include <pcmcia/cistpl.h> #include <pcmcia/ds.h> #include <pcmcia/ss.h> @@ -52,7 +51,7 @@ static void pcmcia_check_driver(struct pcmcia_driver *p_drv) if (!p_drv->probe || !p_drv->remove) printk(KERN_DEBUG "pcmcia: %s lacks a requisite callback " - "function\n", p_drv->drv.name); + "function\n", p_drv->name); while (did && did->match_flags) { for (i = 0; i < 4; i++) { @@ -65,7 +64,7 @@ static void pcmcia_check_driver(struct pcmcia_driver *p_drv) printk(KERN_DEBUG "pcmcia: %s: invalid hash for " "product string \"%s\": is 0x%x, should " - "be 0x%x\n", p_drv->drv.name, did->prod_id[i], + "be 0x%x\n", p_drv->name, did->prod_id[i], did->prod_id_hash[i], hash); printk(KERN_DEBUG "pcmcia: see " "Documentation/pcmcia/devicetable.txt for " @@ -180,10 +179,11 @@ int pcmcia_register_driver(struct pcmcia_driver *driver) /* initialize common fields */ driver->drv.bus = &pcmcia_bus_type; driver->drv.owner = driver->owner; + driver->drv.name = driver->name; mutex_init(&driver->dynids.lock); INIT_LIST_HEAD(&driver->dynids.list); - pr_debug("registering driver %s\n", driver->drv.name); + pr_debug("registering driver %s\n", driver->name); error = driver_register(&driver->drv); if (error < 0) @@ -203,7 +203,7 @@ EXPORT_SYMBOL(pcmcia_register_driver); */ void pcmcia_unregister_driver(struct pcmcia_driver *driver) { - pr_debug("unregistering driver %s\n", driver->drv.name); + pr_debug("unregistering driver %s\n", driver->name); driver_unregister(&driver->drv); pcmcia_free_dynids(driver); } @@ -264,7 +264,7 @@ static int pcmcia_device_probe(struct device *dev) p_drv = to_pcmcia_drv(dev->driver); s = p_dev->socket; - dev_dbg(dev, "trying to bind to %s\n", p_drv->drv.name); + dev_dbg(dev, "trying to bind to %s\n", p_drv->name); if ((!p_drv->probe) || (!p_dev->function_config) || (!try_module_get(p_drv->owner))) { @@ -276,21 +276,28 @@ static int pcmcia_device_probe(struct device *dev) ret = pccard_read_tuple(p_dev->socket, p_dev->func, CISTPL_CONFIG, &cis_config); if (!ret) { - p_dev->conf.ConfigBase = cis_config.base; - p_dev->conf.Present = cis_config.rmask[0]; + p_dev->config_base = cis_config.base; + p_dev->config_regs = cis_config.rmask[0]; + dev_dbg(dev, "base %x, regs %x", p_dev->config_base, + p_dev->config_regs); } else { dev_printk(KERN_INFO, dev, "pcmcia: could not parse base and rmask0 of CIS\n"); - p_dev->conf.ConfigBase = 0; - p_dev->conf.Present = 0; + p_dev->config_base = 0; + p_dev->config_regs = 0; } ret = p_drv->probe(p_dev); if (ret) { dev_dbg(dev, "binding to %s failed with %d\n", - p_drv->drv.name, ret); + p_drv->name, ret); goto put_module; } + dev_dbg(dev, "%s bound: Vpp %d.%d, idx %x, IRQ %d", p_drv->name, + p_dev->vpp/10, p_dev->vpp%10, p_dev->config_index, p_dev->irq); + dev_dbg(dev, "resources: ioport %pR %pR iomem %pR %pR %pR", + p_dev->resource[0], p_dev->resource[1], p_dev->resource[2], + p_dev->resource[3], p_dev->resource[4]); mutex_lock(&s->ops_mutex); if ((s->pcmcia_pfc) && @@ -374,13 +381,13 @@ static int pcmcia_device_remove(struct device *dev) if (p_dev->_irq || p_dev->_io || p_dev->_locked) dev_printk(KERN_INFO, dev, "pcmcia: driver %s did not release config properly\n", - p_drv->drv.name); + p_drv->name); for (i = 0; i < MAX_WIN; i++) if (p_dev->_win & CLIENT_WIN_REQ(i)) dev_printk(KERN_INFO, dev, "pcmcia: driver %s did not release window properly\n", - p_drv->drv.name); + p_drv->name); /* references from pcmcia_probe_device */ pcmcia_put_dev(p_dev); @@ -1136,7 +1143,7 @@ static int pcmcia_dev_suspend(struct device *dev, pm_message_t state) dev_printk(KERN_ERR, dev, "pcmcia: device %s (driver %s) did " "not want to go to sleep (%d)\n", - p_dev->devname, p_drv->drv.name, ret); + p_dev->devname, p_drv->name, ret); mutex_lock(&p_dev->socket->ops_mutex); p_dev->suspended = 0; mutex_unlock(&p_dev->socket->ops_mutex); @@ -1178,7 +1185,7 @@ static int pcmcia_dev_resume(struct device *dev) if (p_dev->device_no == p_dev->func) { dev_dbg(dev, "requesting configuration\n"); - ret = pcmcia_request_configuration(p_dev, &p_dev->conf); + ret = pcmcia_enable_device(p_dev); if (ret) goto out; } diff --git a/drivers/pcmcia/i82092.c b/drivers/pcmcia/i82092.c index 05d0879ce935..fc7906eaf228 100644 --- a/drivers/pcmcia/i82092.c +++ b/drivers/pcmcia/i82092.c @@ -16,7 +16,6 @@ #include <linux/device.h> #include <pcmcia/ss.h> -#include <pcmcia/cs.h> #include <asm/system.h> #include <asm/io.h> diff --git a/drivers/pcmcia/i82365.c b/drivers/pcmcia/i82365.c index 61746bd598b3..72a033a2acdb 100644 --- a/drivers/pcmcia/i82365.c +++ b/drivers/pcmcia/i82365.c @@ -51,7 +51,6 @@ #include <asm/system.h> #include <pcmcia/ss.h> -#include <pcmcia/cs.h> #include <linux/isapnp.h> diff --git a/drivers/pcmcia/m32r_cfc.c b/drivers/pcmcia/m32r_cfc.c index 24de49925863..2adb0106a039 100644 --- a/drivers/pcmcia/m32r_cfc.c +++ b/drivers/pcmcia/m32r_cfc.c @@ -27,7 +27,6 @@ #include <asm/system.h> #include <pcmcia/ss.h> -#include <pcmcia/cs.h> #undef MAX_IO_WIN /* FIXME */ #define MAX_IO_WIN 1 diff --git a/drivers/pcmcia/m32r_pcc.c b/drivers/pcmcia/m32r_pcc.c index 8e4723844ad3..1511ff71c87b 100644 --- a/drivers/pcmcia/m32r_pcc.c +++ b/drivers/pcmcia/m32r_pcc.c @@ -28,7 +28,6 @@ #include <asm/addrspace.h> #include <pcmcia/ss.h> -#include <pcmcia/cs.h> /* XXX: should be moved into asm/irq.h */ #define PCC0_IRQ 24 diff --git a/drivers/pcmcia/m8xx_pcmcia.c b/drivers/pcmcia/m8xx_pcmcia.c index f0ecad99ce81..99d4f23cb435 100644 --- a/drivers/pcmcia/m8xx_pcmcia.c +++ b/drivers/pcmcia/m8xx_pcmcia.c @@ -59,7 +59,6 @@ #include <asm/irq.h> #include <asm/fs_pd.h> -#include <pcmcia/cs.h> #include <pcmcia/ss.h> #define pcmcia_info(args...) printk(KERN_INFO "m8xx_pcmcia: "args) diff --git a/drivers/pcmcia/o2micro.h b/drivers/pcmcia/o2micro.h index e74bebac2695..5096e92c7a4c 100644 --- a/drivers/pcmcia/o2micro.h +++ b/drivers/pcmcia/o2micro.h @@ -153,14 +153,14 @@ static int o2micro_override(struct yenta_socket *socket) if (use_speedup) { dev_info(&socket->dev->dev, - "O2: enabling read prefetch/write burst\n"); + "O2: enabling read prefetch/write burst. If you experience problems or performance issues, use the yenta_socket parameter 'o2_speedup=off'\n"); config_writeb(socket, O2_RESERVED1, a | O2_RES_READ_PREFETCH | O2_RES_WRITE_BURST); config_writeb(socket, O2_RESERVED2, b | O2_RES_READ_PREFETCH | O2_RES_WRITE_BURST); } else { dev_info(&socket->dev->dev, - "O2: disabling read prefetch/write burst\n"); + "O2: disabling read prefetch/write burst. If you experience problems or performance issues, use the yenta_socket parameter 'o2_speedup=on'\n"); config_writeb(socket, O2_RESERVED1, a & ~(O2_RES_READ_PREFETCH | O2_RES_WRITE_BURST)); config_writeb(socket, O2_RESERVED2, diff --git a/drivers/pcmcia/pcmcia_cis.c b/drivers/pcmcia/pcmcia_cis.c index 0ac54da15885..e2c92415b892 100644 --- a/drivers/pcmcia/pcmcia_cis.c +++ b/drivers/pcmcia/pcmcia_cis.c @@ -6,7 +6,7 @@ * are Copyright (C) 1999 David A. Hinds. All Rights Reserved. * * Copyright (C) 1999 David A. Hinds - * Copyright (C) 2004-2009 Dominik Brodowski + * Copyright (C) 2004-2010 Dominik Brodowski * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as @@ -22,7 +22,6 @@ #include <pcmcia/cisreg.h> #include <pcmcia/cistpl.h> #include <pcmcia/ss.h> -#include <pcmcia/cs.h> #include <pcmcia/ds.h> #include "cs_internal.h" @@ -126,14 +125,24 @@ next_entry: return ret; } + +/** + * pcmcia_io_cfg_data_width() - convert cfgtable to data path width parameter + */ +static int pcmcia_io_cfg_data_width(unsigned int flags) +{ + if (!(flags & CISTPL_IO_8BIT)) + return IO_DATA_PATH_WIDTH_16; + if (!(flags & CISTPL_IO_16BIT)) + return IO_DATA_PATH_WIDTH_8; + return IO_DATA_PATH_WIDTH_AUTO; +} + + struct pcmcia_cfg_mem { struct pcmcia_device *p_dev; + int (*conf_check) (struct pcmcia_device *p_dev, void *priv_data); void *priv_data; - int (*conf_check) (struct pcmcia_device *p_dev, - cistpl_cftable_entry_t *cfg, - cistpl_cftable_entry_t *dflt, - unsigned int vcc, - void *priv_data); cisparse_t parse; cistpl_cftable_entry_t dflt; }; @@ -147,25 +156,102 @@ struct pcmcia_cfg_mem { */ static int pcmcia_do_loop_config(tuple_t *tuple, cisparse_t *parse, void *priv) { - cistpl_cftable_entry_t *cfg = &parse->cftable_entry; struct pcmcia_cfg_mem *cfg_mem = priv; + struct pcmcia_device *p_dev = cfg_mem->p_dev; + cistpl_cftable_entry_t *cfg = &parse->cftable_entry; + cistpl_cftable_entry_t *dflt = &cfg_mem->dflt; + unsigned int flags = p_dev->config_flags; + unsigned int vcc = p_dev->socket->socket.Vcc; + + dev_dbg(&p_dev->dev, "testing configuration %x, autoconf %x\n", + cfg->index, flags); /* default values */ - cfg_mem->p_dev->conf.ConfigIndex = cfg->index; + cfg_mem->p_dev->config_index = cfg->index; if (cfg->flags & CISTPL_CFTABLE_DEFAULT) cfg_mem->dflt = *cfg; - return cfg_mem->conf_check(cfg_mem->p_dev, cfg, &cfg_mem->dflt, - cfg_mem->p_dev->socket->socket.Vcc, - cfg_mem->priv_data); + /* check for matching Vcc? */ + if (flags & CONF_AUTO_CHECK_VCC) { + if (cfg->vcc.present & (1 << CISTPL_POWER_VNOM)) { + if (vcc != cfg->vcc.param[CISTPL_POWER_VNOM] / 10000) + return -ENODEV; + } else if (dflt->vcc.present & (1 << CISTPL_POWER_VNOM)) { + if (vcc != dflt->vcc.param[CISTPL_POWER_VNOM] / 10000) + return -ENODEV; + } + } + + /* set Vpp? */ + if (flags & CONF_AUTO_SET_VPP) { + if (cfg->vpp1.present & (1 << CISTPL_POWER_VNOM)) + p_dev->vpp = cfg->vpp1.param[CISTPL_POWER_VNOM] / 10000; + else if (dflt->vpp1.present & (1 << CISTPL_POWER_VNOM)) + p_dev->vpp = + dflt->vpp1.param[CISTPL_POWER_VNOM] / 10000; + } + + /* enable audio? */ + if ((flags & CONF_AUTO_AUDIO) && (cfg->flags & CISTPL_CFTABLE_AUDIO)) + p_dev->config_flags |= CONF_ENABLE_SPKR; + + + /* IO window settings? */ + if (flags & CONF_AUTO_SET_IO) { + cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &dflt->io; + int i = 0; + + p_dev->resource[0]->start = p_dev->resource[0]->end = 0; + p_dev->resource[1]->start = p_dev->resource[1]->end = 0; + if (io->nwin == 0) + return -ENODEV; + + p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH; + p_dev->resource[0]->flags |= + pcmcia_io_cfg_data_width(io->flags); + if (io->nwin > 1) { + /* For multifunction cards, by convention, we + * configure the network function with window 0, + * and serial with window 1 */ + i = (io->win[1].len > io->win[0].len); + p_dev->resource[1]->flags = p_dev->resource[0]->flags; + p_dev->resource[1]->start = io->win[1-i].base; + p_dev->resource[1]->end = io->win[1-i].len; + } + p_dev->resource[0]->start = io->win[i].base; + p_dev->resource[0]->end = io->win[i].len; + p_dev->io_lines = io->flags & CISTPL_IO_LINES_MASK; + } + + /* MEM window settings? */ + if (flags & CONF_AUTO_SET_IOMEM) { + /* so far, we only set one memory window */ + cistpl_mem_t *mem = (cfg->mem.nwin) ? &cfg->mem : &dflt->mem; + + p_dev->resource[2]->start = p_dev->resource[2]->end = 0; + if (mem->nwin == 0) + return -ENODEV; + + p_dev->resource[2]->start = mem->win[0].host_addr; + p_dev->resource[2]->end = mem->win[0].len; + if (p_dev->resource[2]->end < 0x1000) + p_dev->resource[2]->end = 0x1000; + p_dev->card_addr = mem->win[0].card_addr; + } + + dev_dbg(&p_dev->dev, + "checking configuration %x: %pr %pr %pr (%d lines)\n", + p_dev->config_index, p_dev->resource[0], p_dev->resource[1], + p_dev->resource[2], p_dev->io_lines); + + return cfg_mem->conf_check(p_dev, cfg_mem->priv_data); } /** * pcmcia_loop_config() - loop over configuration options * @p_dev: the struct pcmcia_device which we need to loop for. * @conf_check: function to call for each configuration option. - * It gets passed the struct pcmcia_device, the CIS data - * describing the configuration option, and private data + * It gets passed the struct pcmcia_device and private data * being passed to pcmcia_loop_config() * @priv_data: private data to be passed to the conf_check function. * @@ -175,9 +261,6 @@ static int pcmcia_do_loop_config(tuple_t *tuple, cisparse_t *parse, void *priv) */ int pcmcia_loop_config(struct pcmcia_device *p_dev, int (*conf_check) (struct pcmcia_device *p_dev, - cistpl_cftable_entry_t *cfg, - cistpl_cftable_entry_t *dflt, - unsigned int vcc, void *priv_data), void *priv_data) { diff --git a/drivers/pcmcia/pcmcia_resource.c b/drivers/pcmcia/pcmcia_resource.c index 9ba4dade69a4..a9af0d784426 100644 --- a/drivers/pcmcia/pcmcia_resource.c +++ b/drivers/pcmcia/pcmcia_resource.c @@ -6,7 +6,7 @@ * are Copyright (C) 1999 David A. Hinds. All Rights Reserved. * * Copyright (C) 1999 David A. Hinds - * Copyright (C) 2004-2005 Dominik Brodowski + * Copyright (C) 2004-2010 Dominik Brodowski * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as @@ -26,7 +26,6 @@ #include <asm/irq.h> #include <pcmcia/ss.h> -#include <pcmcia/cs.h> #include <pcmcia/cistpl.h> #include <pcmcia/cisreg.h> #include <pcmcia/ds.h> @@ -56,6 +55,12 @@ struct resource *pcmcia_find_mem_region(u_long base, u_long num, u_long align, } +/** + * release_io_space() - release IO ports allocated with alloc_io_space() + * @s: pcmcia socket + * @res: resource to release + * + */ static void release_io_space(struct pcmcia_socket *s, struct resource *res) { resource_size_t num = resource_size(res); @@ -81,9 +86,14 @@ static void release_io_space(struct pcmcia_socket *s, struct resource *res) } } } -} /* release_io_space */ +} + -/** alloc_io_space +/** + * alloc_io_space() - allocate IO ports for use by a PCMCIA device + * @s: pcmcia socket + * @res: resource to allocate (begin: begin, end: size) + * @lines: number of IO lines decoded by the PCMCIA card * * Special stuff for managing IO windows, because they are scarce */ @@ -135,7 +145,7 @@ static int alloc_io_space(struct pcmcia_socket *s, struct resource *res, } dev_dbg(&s->dev, "alloc_io_space request result %d: %pR\n", ret, res); return ret; -} /* alloc_io_space */ +} /** @@ -168,14 +178,14 @@ static int pcmcia_access_config(struct pcmcia_device *p_dev, return -EACCES; } - addr = (c->ConfigBase + where) >> 1; + addr = (p_dev->config_base + where) >> 1; ret = accessf(s, 1, addr, 1, val); mutex_unlock(&s->ops_mutex); return ret; -} /* pcmcia_access_config */ +} /** @@ -204,11 +214,20 @@ int pcmcia_write_config_byte(struct pcmcia_device *p_dev, off_t where, u8 val) EXPORT_SYMBOL(pcmcia_write_config_byte); -int pcmcia_map_mem_page(struct pcmcia_device *p_dev, window_handle_t wh, +/** + * pcmcia_map_mem_page() - modify iomem window to point to a different offset + * @p_dev: pcmcia device + * @res: iomem resource already enabled by pcmcia_request_window() + * @offset: card_offset to map + * + * pcmcia_map_mem_page() modifies what can be read and written by accessing + * an iomem range previously enabled by pcmcia_request_window(), by setting + * the card_offset value to @offset. + */ +int pcmcia_map_mem_page(struct pcmcia_device *p_dev, struct resource *res, unsigned int offset) { struct pcmcia_socket *s = p_dev->socket; - struct resource *res = wh; unsigned int w; int ret; @@ -223,98 +242,111 @@ int pcmcia_map_mem_page(struct pcmcia_device *p_dev, window_handle_t wh, dev_warn(&p_dev->dev, "failed to set_mem_map\n"); mutex_unlock(&s->ops_mutex); return ret; -} /* pcmcia_map_mem_page */ +} EXPORT_SYMBOL(pcmcia_map_mem_page); -/** pcmcia_modify_configuration +/** + * pcmcia_fixup_iowidth() - reduce io width to 8bit + * @p_dev: pcmcia device * - * Modify a locked socket configuration + * pcmcia_fixup_iowidth() allows a PCMCIA device driver to reduce the + * IO width to 8bit after having called pcmcia_enable_device() + * previously. */ -int pcmcia_modify_configuration(struct pcmcia_device *p_dev, - modconf_t *mod) +int pcmcia_fixup_iowidth(struct pcmcia_device *p_dev) { - struct pcmcia_socket *s; - config_t *c; - int ret; - - s = p_dev->socket; + struct pcmcia_socket *s = p_dev->socket; + pccard_io_map io_off = { 0, 0, 0, 0, 1 }; + pccard_io_map io_on; + int i, ret = 0; mutex_lock(&s->ops_mutex); - c = p_dev->function_config; - if (!(s->state & SOCKET_PRESENT)) { - dev_dbg(&p_dev->dev, "No card present\n"); - ret = -ENODEV; - goto unlock; - } - if (!(c->state & CONFIG_LOCKED)) { - dev_dbg(&p_dev->dev, "Configuration isnt't locked\n"); + dev_dbg(&p_dev->dev, "fixup iowidth to 8bit\n"); + + if (!(s->state & SOCKET_PRESENT) || + !(p_dev->function_config->state & CONFIG_LOCKED)) { + dev_dbg(&p_dev->dev, "No card? Config not locked?\n"); ret = -EACCES; goto unlock; } - if (mod->Attributes & (CONF_IRQ_CHANGE_VALID | CONF_VCC_CHANGE_VALID)) { - dev_dbg(&p_dev->dev, - "changing Vcc or IRQ is not allowed at this time\n"); - ret = -EINVAL; - goto unlock; - } + io_on.speed = io_speed; + for (i = 0; i < MAX_IO_WIN; i++) { + if (!s->io[i].res) + continue; + io_off.map = i; + io_on.map = i; - /* We only allow changing Vpp1 and Vpp2 to the same value */ - if ((mod->Attributes & CONF_VPP1_CHANGE_VALID) && - (mod->Attributes & CONF_VPP2_CHANGE_VALID)) { - if (mod->Vpp1 != mod->Vpp2) { - dev_dbg(&p_dev->dev, - "Vpp1 and Vpp2 must be the same\n"); - ret = -EINVAL; - goto unlock; - } - s->socket.Vpp = mod->Vpp1; - if (s->ops->set_socket(s, &s->socket)) { - dev_printk(KERN_WARNING, &p_dev->dev, - "Unable to set VPP\n"); - ret = -EIO; - goto unlock; - } - } else if ((mod->Attributes & CONF_VPP1_CHANGE_VALID) || - (mod->Attributes & CONF_VPP2_CHANGE_VALID)) { - dev_dbg(&p_dev->dev, - "changing Vcc is not allowed at this time\n"); - ret = -EINVAL; - goto unlock; + io_on.flags = MAP_ACTIVE | IO_DATA_PATH_WIDTH_8; + io_on.start = s->io[i].res->start; + io_on.stop = s->io[i].res->end; + + s->ops->set_io_map(s, &io_off); + mdelay(40); + s->ops->set_io_map(s, &io_on); } +unlock: + mutex_unlock(&s->ops_mutex); + + return ret; +} +EXPORT_SYMBOL(pcmcia_fixup_iowidth); + + +/** + * pcmcia_fixup_vpp() - set Vpp to a new voltage level + * @p_dev: pcmcia device + * @new_vpp: new Vpp voltage + * + * pcmcia_fixup_vpp() allows a PCMCIA device driver to set Vpp to + * a new voltage level between calls to pcmcia_enable_device() + * and pcmcia_disable_device(). + */ +int pcmcia_fixup_vpp(struct pcmcia_device *p_dev, unsigned char new_vpp) +{ + struct pcmcia_socket *s = p_dev->socket; + int ret = 0; - if (mod->Attributes & CONF_IO_CHANGE_WIDTH) { - pccard_io_map io_off = { 0, 0, 0, 0, 1 }; - pccard_io_map io_on; - int i; + mutex_lock(&s->ops_mutex); - io_on.speed = io_speed; - for (i = 0; i < MAX_IO_WIN; i++) { - if (!s->io[i].res) - continue; - io_off.map = i; - io_on.map = i; + dev_dbg(&p_dev->dev, "fixup Vpp to %d\n", new_vpp); - io_on.flags = MAP_ACTIVE | IO_DATA_PATH_WIDTH_8; - io_on.start = s->io[i].res->start; - io_on.stop = s->io[i].res->end; + if (!(s->state & SOCKET_PRESENT) || + !(p_dev->function_config->state & CONFIG_LOCKED)) { + dev_dbg(&p_dev->dev, "No card? Config not locked?\n"); + ret = -EACCES; + goto unlock; + } - s->ops->set_io_map(s, &io_off); - mdelay(40); - s->ops->set_io_map(s, &io_on); - } + s->socket.Vpp = new_vpp; + if (s->ops->set_socket(s, &s->socket)) { + dev_warn(&p_dev->dev, "Unable to set VPP\n"); + ret = -EIO; + goto unlock; } - ret = 0; + p_dev->vpp = new_vpp; + unlock: mutex_unlock(&s->ops_mutex); return ret; -} /* modify_configuration */ -EXPORT_SYMBOL(pcmcia_modify_configuration); +} +EXPORT_SYMBOL(pcmcia_fixup_vpp); +/** + * pcmcia_release_configuration() - physically disable a PCMCIA device + * @p_dev: pcmcia device + * + * pcmcia_release_configuration() is the 1:1 counterpart to + * pcmcia_enable_device(): If a PCMCIA device is no longer used by any + * driver, the Vpp voltage is set to 0, IRQs will no longer be generated, + * and I/O ranges will be disabled. As pcmcia_release_io() and + * pcmcia_release_window() still need to be called, device drivers are + * expected to call pcmcia_disable_device() instead. + */ int pcmcia_release_configuration(struct pcmcia_device *p_dev) { pccard_io_map io = { 0, 0, 0, 0, 1 }; @@ -327,7 +359,7 @@ int pcmcia_release_configuration(struct pcmcia_device *p_dev) if (p_dev->_locked) { p_dev->_locked = 0; if (--(s->lock_count) == 0) { - s->socket.flags = SS_OUTPUT_ENA; /* Is this correct? */ + s->socket.flags = SS_OUTPUT_ENA; /* Is this correct? */ s->socket.Vpp = 0; s->socket.io_irq = 0; s->ops->set_socket(s, &s->socket); @@ -349,16 +381,18 @@ int pcmcia_release_configuration(struct pcmcia_device *p_dev) mutex_unlock(&s->ops_mutex); return 0; -} /* pcmcia_release_configuration */ +} -/** pcmcia_release_io +/** + * pcmcia_release_io() - release I/O allocated by a PCMCIA device + * @p_dev: pcmcia device * - * Release_io() releases the I/O ranges allocated by a client. This - * may be invoked some time after a card ejection has already dumped - * the actual socket configuration, so if the client is "stale", we - * don't bother checking the port ranges against the current socket - * values. + * pcmcia_release_io() releases the I/O ranges allocated by a PCMCIA + * device. This may be invoked some time after a card ejection has + * already dumped the actual socket configuration, so if the client is + * "stale", we don't bother checking the port ranges against the + * current socket values. */ static int pcmcia_release_io(struct pcmcia_device *p_dev) { @@ -387,6 +421,14 @@ out: } /* pcmcia_release_io */ +/** + * pcmcia_release_window() - release reserved iomem for PCMCIA devices + * @p_dev: pcmcia device + * @res: iomem resource to release + * + * pcmcia_release_window() releases &struct resource *res which was + * previously reserved by calling pcmcia_request_window(). + */ int pcmcia_release_window(struct pcmcia_device *p_dev, struct resource *res) { struct pcmcia_socket *s = p_dev->socket; @@ -420,6 +462,8 @@ int pcmcia_release_window(struct pcmcia_device *p_dev, struct resource *res) kfree(win->res); win->res = NULL; } + res->start = res->end = 0; + res->flags = IORESOURCE_MEM; p_dev->_win &= ~CLIENT_WIN_REQ(w); mutex_unlock(&s->ops_mutex); @@ -428,23 +472,30 @@ int pcmcia_release_window(struct pcmcia_device *p_dev, struct resource *res) EXPORT_SYMBOL(pcmcia_release_window); -int pcmcia_request_configuration(struct pcmcia_device *p_dev, - config_req_t *req) +/** + * pcmcia_enable_device() - set up and activate a PCMCIA device + * @p_dev: the associated PCMCIA device + * + * pcmcia_enable_device() physically enables a PCMCIA device. It parses + * the flags passed to in @flags and stored in @p_dev->flags and sets up + * the Vpp voltage, enables the speaker line, I/O ports and store proper + * values to configuration registers. + */ +int pcmcia_enable_device(struct pcmcia_device *p_dev) { int i; - u_int base; + unsigned int base; struct pcmcia_socket *s = p_dev->socket; config_t *c; pccard_io_map iomap; + unsigned char status = 0; + unsigned char ext_status = 0; + unsigned char option = 0; + unsigned int flags = p_dev->config_flags; if (!(s->state & SOCKET_PRESENT)) return -ENODEV; - if (req->IntType & INT_CARDBUS) { - dev_dbg(&p_dev->dev, "IntType may not be INT_CARDBUS\n"); - return -EINVAL; - } - mutex_lock(&s->ops_mutex); c = p_dev->function_config; if (c->state & CONFIG_LOCKED) { @@ -454,7 +505,7 @@ int pcmcia_request_configuration(struct pcmcia_device *p_dev, } /* Do power control. We don't allow changes in Vcc. */ - s->socket.Vpp = req->Vpp; + s->socket.Vpp = p_dev->vpp; if (s->ops->set_socket(s, &s->socket)) { mutex_unlock(&s->ops_mutex); dev_printk(KERN_WARNING, &p_dev->dev, @@ -463,64 +514,72 @@ int pcmcia_request_configuration(struct pcmcia_device *p_dev, } /* Pick memory or I/O card, DMA mode, interrupt */ - c->IntType = req->IntType; - c->Attributes = req->Attributes; - if (req->IntType & INT_MEMORY_AND_IO) + if (p_dev->_io) s->socket.flags |= SS_IOCARD; - if (req->IntType & INT_ZOOMED_VIDEO) - s->socket.flags |= SS_ZVCARD | SS_IOCARD; - if (req->Attributes & CONF_ENABLE_DMA) - s->socket.flags |= SS_DMA_MODE; - if (req->Attributes & CONF_ENABLE_SPKR) + if (flags & CONF_ENABLE_SPKR) { s->socket.flags |= SS_SPKR_ENA; - if (req->Attributes & CONF_ENABLE_IRQ) + status = CCSR_AUDIO_ENA; + if (!(p_dev->config_regs & PRESENT_STATUS)) + dev_warn(&p_dev->dev, "speaker requested, but " + "PRESENT_STATUS not set!\n"); + } + if (flags & CONF_ENABLE_IRQ) s->socket.io_irq = s->pcmcia_irq; else s->socket.io_irq = 0; + if (flags & CONF_ENABLE_ESR) { + p_dev->config_regs |= PRESENT_EXT_STATUS; + ext_status = ESR_REQ_ATTN_ENA; + } s->ops->set_socket(s, &s->socket); s->lock_count++; + dev_dbg(&p_dev->dev, + "enable_device: V %d, flags %x, base %x, regs %x, idx %x\n", + p_dev->vpp, flags, p_dev->config_base, p_dev->config_regs, + p_dev->config_index); + /* Set up CIS configuration registers */ - base = c->ConfigBase = req->ConfigBase; - c->CardValues = req->Present; - if (req->Present & PRESENT_COPY) { - c->Copy = req->Copy; - pcmcia_write_cis_mem(s, 1, (base + CISREG_SCR)>>1, 1, &c->Copy); - } - if (req->Present & PRESENT_OPTION) { + base = p_dev->config_base; + if (p_dev->config_regs & PRESENT_COPY) { + u16 tmp = 0; + dev_dbg(&p_dev->dev, "clearing CISREG_SCR\n"); + pcmcia_write_cis_mem(s, 1, (base + CISREG_SCR)>>1, 1, &tmp); + } + if (p_dev->config_regs & PRESENT_PIN_REPLACE) { + u16 tmp = 0; + dev_dbg(&p_dev->dev, "clearing CISREG_PRR\n"); + pcmcia_write_cis_mem(s, 1, (base + CISREG_PRR)>>1, 1, &tmp); + } + if (p_dev->config_regs & PRESENT_OPTION) { if (s->functions == 1) { - c->Option = req->ConfigIndex & COR_CONFIG_MASK; + option = p_dev->config_index & COR_CONFIG_MASK; } else { - c->Option = req->ConfigIndex & COR_MFC_CONFIG_MASK; - c->Option |= COR_FUNC_ENA|COR_IREQ_ENA; - if (req->Present & PRESENT_IOBASE_0) - c->Option |= COR_ADDR_DECODE; + option = p_dev->config_index & COR_MFC_CONFIG_MASK; + option |= COR_FUNC_ENA|COR_IREQ_ENA; + if (p_dev->config_regs & PRESENT_IOBASE_0) + option |= COR_ADDR_DECODE; } - if ((req->Attributes & CONF_ENABLE_IRQ) && - !(req->Attributes & CONF_ENABLE_PULSE_IRQ)) - c->Option |= COR_LEVEL_REQ; - pcmcia_write_cis_mem(s, 1, (base + CISREG_COR)>>1, 1, &c->Option); + if ((flags & CONF_ENABLE_IRQ) && + !(flags & CONF_ENABLE_PULSE_IRQ)) + option |= COR_LEVEL_REQ; + pcmcia_write_cis_mem(s, 1, (base + CISREG_COR)>>1, 1, &option); mdelay(40); } - if (req->Present & PRESENT_STATUS) { - c->Status = req->Status; - pcmcia_write_cis_mem(s, 1, (base + CISREG_CCSR)>>1, 1, &c->Status); - } - if (req->Present & PRESENT_PIN_REPLACE) { - c->Pin = req->Pin; - pcmcia_write_cis_mem(s, 1, (base + CISREG_PRR)>>1, 1, &c->Pin); - } - if (req->Present & PRESENT_EXT_STATUS) { - c->ExtStatus = req->ExtStatus; - pcmcia_write_cis_mem(s, 1, (base + CISREG_ESR)>>1, 1, &c->ExtStatus); - } - if (req->Present & PRESENT_IOBASE_0) { + if (p_dev->config_regs & PRESENT_STATUS) + pcmcia_write_cis_mem(s, 1, (base + CISREG_CCSR)>>1, 1, &status); + + if (p_dev->config_regs & PRESENT_EXT_STATUS) + pcmcia_write_cis_mem(s, 1, (base + CISREG_ESR)>>1, 1, + &ext_status); + + if (p_dev->config_regs & PRESENT_IOBASE_0) { u8 b = c->io[0].start & 0xff; pcmcia_write_cis_mem(s, 1, (base + CISREG_IOBASE_0)>>1, 1, &b); b = (c->io[0].start >> 8) & 0xff; pcmcia_write_cis_mem(s, 1, (base + CISREG_IOBASE_1)>>1, 1, &b); } - if (req->Present & PRESENT_IOSIZE) { + if (p_dev->config_regs & PRESENT_IOSIZE) { u8 b = resource_size(&c->io[0]) + resource_size(&c->io[1]) - 1; pcmcia_write_cis_mem(s, 1, (base + CISREG_IOSIZE)>>1, 1, &b); } @@ -551,14 +610,15 @@ int pcmcia_request_configuration(struct pcmcia_device *p_dev, p_dev->_locked = 1; mutex_unlock(&s->ops_mutex); return 0; -} /* pcmcia_request_configuration */ -EXPORT_SYMBOL(pcmcia_request_configuration); +} /* pcmcia_enable_device */ +EXPORT_SYMBOL(pcmcia_enable_device); /** * pcmcia_request_io() - attempt to reserve port ranges for PCMCIA devices + * @p_dev: the associated PCMCIA device * - * pcmcia_request_io() attepts to reserve the IO port ranges specified in + * pcmcia_request_io() attempts to reserve the IO port ranges specified in * &struct pcmcia_device @p_dev->resource[0] and @p_dev->resource[1]. The * "start" value is the requested start of the IO port resource; "end" * reflects the number of ports requested. The number of IO lines requested @@ -622,11 +682,13 @@ EXPORT_SYMBOL(pcmcia_request_io); /** * pcmcia_request_irq() - attempt to request a IRQ for a PCMCIA device + * @p_dev: the associated PCMCIA device + * @handler: IRQ handler to register * - * pcmcia_request_irq() is a wrapper around request_irq which will allow + * pcmcia_request_irq() is a wrapper around request_irq() which allows * the PCMCIA core to clean up the registration in pcmcia_disable_device(). * Drivers are free to use request_irq() directly, but then they need to - * call free_irq themselfves, too. Also, only IRQF_SHARED capable IRQ + * call free_irq() themselfves, too. Also, only %IRQF_SHARED capable IRQ * handlers are allowed. */ int __must_check pcmcia_request_irq(struct pcmcia_device *p_dev, @@ -649,12 +711,14 @@ EXPORT_SYMBOL(pcmcia_request_irq); /** * pcmcia_request_exclusive_irq() - attempt to request an exclusive IRQ first + * @p_dev: the associated PCMCIA device + * @handler: IRQ handler to register * - * pcmcia_request_exclusive_irq() is a wrapper around request_irq which + * pcmcia_request_exclusive_irq() is a wrapper around request_irq() which * attempts first to request an exclusive IRQ. If it fails, it also accepts * a shared IRQ, but prints out a warning. PCMCIA drivers should allow for * IRQ sharing and either use request_irq directly (then they need to call - * free_irq themselves, too), or the pcmcia_request_irq() function. + * free_irq() themselves, too), or the pcmcia_request_irq() function. */ int __must_check __pcmcia_request_exclusive_irq(struct pcmcia_device *p_dev, @@ -795,38 +859,47 @@ int pcmcia_setup_irq(struct pcmcia_device *p_dev) } -/** pcmcia_request_window +/** + * pcmcia_request_window() - attempt to reserve iomem for PCMCIA devices + * @p_dev: the associated PCMCIA device + * @res: &struct resource pointing to p_dev->resource[2..5] + * @speed: access speed * - * Request_window() establishes a mapping between card memory space - * and system memory space. + * pcmcia_request_window() attepts to reserve an iomem ranges specified in + * &struct resource @res pointing to one of the entries in + * &struct pcmcia_device @p_dev->resource[2..5]. The "start" value is the + * requested start of the IO mem resource; "end" reflects the size + * requested. */ -int pcmcia_request_window(struct pcmcia_device *p_dev, win_req_t *req, window_handle_t *wh) +int pcmcia_request_window(struct pcmcia_device *p_dev, struct resource *res, + unsigned int speed) { struct pcmcia_socket *s = p_dev->socket; pccard_mem_map *win; u_long align; - struct resource *res; int w; + dev_dbg(&p_dev->dev, "request_window %pR %d\n", res, speed); + if (!(s->state & SOCKET_PRESENT)) { dev_dbg(&p_dev->dev, "No card present\n"); return -ENODEV; } /* Window size defaults to smallest available */ - if (req->Size == 0) - req->Size = s->map_size; - align = (s->features & SS_CAP_MEM_ALIGN) ? req->Size : s->map_size; - if (req->Size & (s->map_size-1)) { + if (res->end == 0) + res->end = s->map_size; + align = (s->features & SS_CAP_MEM_ALIGN) ? res->end : s->map_size; + if (res->end & (s->map_size-1)) { dev_dbg(&p_dev->dev, "invalid map size\n"); return -EINVAL; } - if ((req->Base && (s->features & SS_CAP_STATIC_MAP)) || - (req->Base & (align-1))) { + if ((res->start && (s->features & SS_CAP_STATIC_MAP)) || + (res->start & (align-1))) { dev_dbg(&p_dev->dev, "invalid base address\n"); return -EINVAL; } - if (req->Base) + if (res->start) align = 0; /* Allocate system memory window */ @@ -843,7 +916,7 @@ int pcmcia_request_window(struct pcmcia_device *p_dev, win_req_t *req, window_ha win = &s->win[w]; if (!(s->features & SS_CAP_STATIC_MAP)) { - win->res = pcmcia_find_mem_region(req->Base, req->Size, align, + win->res = pcmcia_find_mem_region(res->start, res->end, align, 0, s); if (!win->res) { dev_dbg(&p_dev->dev, "allocating mem region failed\n"); @@ -855,8 +928,8 @@ int pcmcia_request_window(struct pcmcia_device *p_dev, win_req_t *req, window_ha /* Configure the socket controller */ win->map = w+1; - win->flags = req->Attributes; - win->speed = req->AccessSpeed; + win->flags = res->flags & WIN_FLAGS_MAP; + win->speed = speed; win->card_start = 0; if (s->ops->set_mem_map(s, win) != 0) { @@ -868,17 +941,14 @@ int pcmcia_request_window(struct pcmcia_device *p_dev, win_req_t *req, window_ha /* Return window handle */ if (s->features & SS_CAP_STATIC_MAP) - req->Base = win->static_start; + res->start = win->static_start; else - req->Base = win->res->start; + res->start = win->res->start; /* convert to new-style resources */ - res = p_dev->resource[w + MAX_IO_WIN]; - res->start = req->Base; - res->end = req->Base + req->Size - 1; - res->flags &= ~IORESOURCE_BITS; - res->flags |= (req->Attributes & WIN_FLAGS_MAP) | (win->map << 2); - res->flags |= IORESOURCE_MEM; + res->end += res->start - 1; + res->flags &= ~WIN_FLAGS_REQ; + res->flags |= (win->map << 2) | IORESOURCE_MEM; res->parent = win->res; if (win->res) request_resource(&iomem_resource, res); @@ -886,15 +956,30 @@ int pcmcia_request_window(struct pcmcia_device *p_dev, win_req_t *req, window_ha dev_dbg(&p_dev->dev, "request_window results in %pR\n", res); mutex_unlock(&s->ops_mutex); - *wh = res; return 0; } /* pcmcia_request_window */ EXPORT_SYMBOL(pcmcia_request_window); + +/** + * pcmcia_disable_device() - disable and clean up a PCMCIA device + * @p_dev: the associated PCMCIA device + * + * pcmcia_disable_device() is the driver-callable counterpart to + * pcmcia_enable_device(): If a PCMCIA device is no longer used, + * drivers are expected to clean up and disable the device by calling + * this function. Any I/O ranges (iomem and ioports) will be released, + * the Vpp voltage will be set to 0, and IRQs will no longer be + * generated -- at least if there is no other card function (of + * multifunction devices) being used. + */ void pcmcia_disable_device(struct pcmcia_device *p_dev) { int i; + + dev_dbg(&p_dev->dev, "disabling device\n"); + for (i = 0; i < MAX_WIN; i++) { struct resource *res = p_dev->resource[MAX_IO_WIN + i]; if (res->flags & WIN_FLAGS_REQ) diff --git a/drivers/pcmcia/pd6729.c b/drivers/pcmcia/pd6729.c index deef6656ab7b..8cbfa067171f 100644 --- a/drivers/pcmcia/pd6729.c +++ b/drivers/pcmcia/pd6729.c @@ -18,7 +18,6 @@ #include <linux/io.h> #include <pcmcia/ss.h> -#include <pcmcia/cs.h> #include <asm/system.h> diff --git a/drivers/pcmcia/rsrc_iodyn.c b/drivers/pcmcia/rsrc_iodyn.c index 8510c35d2952..523eb691c30b 100644 --- a/drivers/pcmcia/rsrc_iodyn.c +++ b/drivers/pcmcia/rsrc_iodyn.c @@ -17,7 +17,6 @@ #include <linux/kernel.h> #include <pcmcia/ss.h> -#include <pcmcia/cs.h> #include <pcmcia/cistpl.h> #include "cs_internal.h" diff --git a/drivers/pcmcia/rsrc_mgr.c b/drivers/pcmcia/rsrc_mgr.c index 4e80421fd908..aa628ed0e9f4 100644 --- a/drivers/pcmcia/rsrc_mgr.c +++ b/drivers/pcmcia/rsrc_mgr.c @@ -17,7 +17,6 @@ #include <linux/kernel.h> #include <pcmcia/ss.h> -#include <pcmcia/cs.h> #include <pcmcia/cistpl.h> #include "cs_internal.h" diff --git a/drivers/pcmcia/rsrc_nonstatic.c b/drivers/pcmcia/rsrc_nonstatic.c index 96f348b35fde..b187555d4388 100644 --- a/drivers/pcmcia/rsrc_nonstatic.c +++ b/drivers/pcmcia/rsrc_nonstatic.c @@ -29,7 +29,6 @@ #include <asm/irq.h> #include <pcmcia/ss.h> -#include <pcmcia/cs.h> #include <pcmcia/cistpl.h> #include "cs_internal.h" diff --git a/drivers/pcmcia/sa1100_generic.c b/drivers/pcmcia/sa1100_generic.c index e09851480295..945857f8c284 100644 --- a/drivers/pcmcia/sa1100_generic.c +++ b/drivers/pcmcia/sa1100_generic.c @@ -35,7 +35,6 @@ #include <linux/slab.h> #include <linux/platform_device.h> -#include <pcmcia/cs.h> #include <pcmcia/ss.h> #include <asm/hardware/scoop.h> diff --git a/drivers/pcmcia/soc_common.c b/drivers/pcmcia/soc_common.c index 6f1a86b43c60..689e3c02edb8 100644 --- a/drivers/pcmcia/soc_common.c +++ b/drivers/pcmcia/soc_common.c @@ -627,8 +627,6 @@ void soc_pcmcia_remove_one(struct soc_pcmcia_socket *skt) pcmcia_unregister_socket(&skt->socket); - flush_scheduled_work(); - skt->ops->hw_shutdown(skt); soc_common_pcmcia_config_skt(skt, &dead_socket); @@ -720,8 +718,6 @@ int soc_pcmcia_add_one(struct soc_pcmcia_socket *skt) pcmcia_unregister_socket(&skt->socket); out_err_7: - flush_scheduled_work(); - skt->ops->hw_shutdown(skt); out_err_6: list_del(&skt->node); diff --git a/drivers/pcmcia/soc_common.h b/drivers/pcmcia/soc_common.h index 3fba3a679128..bbcd5385a221 100644 --- a/drivers/pcmcia/soc_common.h +++ b/drivers/pcmcia/soc_common.h @@ -11,7 +11,6 @@ /* include the world */ #include <linux/cpufreq.h> -#include <pcmcia/cs.h> #include <pcmcia/ss.h> #include <pcmcia/cistpl.h> diff --git a/drivers/pcmcia/socket_sysfs.c b/drivers/pcmcia/socket_sysfs.c index cb0d3ace18bd..71aeed93037c 100644 --- a/drivers/pcmcia/socket_sysfs.c +++ b/drivers/pcmcia/socket_sysfs.c @@ -27,7 +27,6 @@ #include <asm/irq.h> #include <pcmcia/ss.h> -#include <pcmcia/cs.h> #include <pcmcia/cistpl.h> #include <pcmcia/cisreg.h> #include <pcmcia/ds.h> diff --git a/drivers/pcmcia/tcic.c b/drivers/pcmcia/tcic.c index be0d841c7ebd..310160bffe38 100644 --- a/drivers/pcmcia/tcic.c +++ b/drivers/pcmcia/tcic.c @@ -49,7 +49,6 @@ #include <asm/io.h> #include <asm/system.h> -#include <pcmcia/cs.h> #include <pcmcia/ss.h> #include "tcic.h" diff --git a/drivers/pcmcia/vrc4173_cardu.c b/drivers/pcmcia/vrc4173_cardu.c index 9b3c15827e5c..c6d36b3a6ce8 100644 --- a/drivers/pcmcia/vrc4173_cardu.c +++ b/drivers/pcmcia/vrc4173_cardu.c @@ -461,7 +461,7 @@ static int __devinit vrc4173_cardu_probe(struct pci_dev *dev, { vrc4173_socket_t *socket; unsigned long start, len, flags; - int slot, err; + int slot, err, ret; slot = vrc4173_cardu_slots++; socket = &cardu_sockets[slot]; @@ -474,43 +474,63 @@ static int __devinit vrc4173_cardu_probe(struct pci_dev *dev, return err; start = pci_resource_start(dev, 0); - if (start == 0) - return -ENODEV; + if (start == 0) { + ret = -ENODEV; + goto disable; + } len = pci_resource_len(dev, 0); - if (len == 0) - return -ENODEV; + if (len == 0) { + ret = -ENODEV; + goto disable; + } - if (((flags = pci_resource_flags(dev, 0)) & IORESOURCE_MEM) == 0) - return -EBUSY; + flags = pci_resource_flags(dev, 0); + if ((flags & IORESOURCE_MEM) == 0) { + ret = -EBUSY; + goto disable; + } - if ((err = pci_request_regions(dev, socket->name)) < 0) - return err; + err = pci_request_regions(dev, socket->name); + if (err < 0) { + ret = err; + goto disable; + } socket->base = ioremap(start, len); - if (socket->base == NULL) - return -ENODEV; + if (socket->base == NULL) { + ret = -ENODEV; + goto release; + } socket->dev = dev; socket->pcmcia_socket = pcmcia_register_socket(slot, &cardu_operations, 1); if (socket->pcmcia_socket == NULL) { - iounmap(socket->base); - socket->base = NULL; - return -ENOMEM; + ret = -ENOMEM; + goto unmap; } if (request_irq(dev->irq, cardu_interrupt, IRQF_SHARED, socket->name, socket) < 0) { - pcmcia_unregister_socket(socket->pcmcia_socket); - socket->pcmcia_socket = NULL; - iounmap(socket->base); - socket->base = NULL; - return -EBUSY; + ret = -EBUSY; + goto unregister; } printk(KERN_INFO "%s at %#08lx, IRQ %d\n", socket->name, start, dev->irq); return 0; + +unregister: + pcmcia_unregister_socket(socket->pcmcia_socket); + socket->pcmcia_socket = NULL; +unmap: + iounmap(socket->base); + socket->base = NULL; +release: + pci_release_regions(dev); +disable: + pci_disable_device(dev); + return ret; } static int __devinit vrc4173_cardu_setup(char *options) diff --git a/drivers/pcmcia/xxs1500_ss.c b/drivers/pcmcia/xxs1500_ss.c index fa88c360c37a..3b67a1b6a197 100644 --- a/drivers/pcmcia/xxs1500_ss.c +++ b/drivers/pcmcia/xxs1500_ss.c @@ -17,7 +17,6 @@ #include <linux/slab.h> #include <linux/spinlock.h> -#include <pcmcia/cs.h> #include <pcmcia/ss.h> #include <pcmcia/cistpl.h> diff --git a/drivers/pcmcia/yenta_socket.c b/drivers/pcmcia/yenta_socket.c index 414d9a6f9a32..408dbaa080a1 100644 --- a/drivers/pcmcia/yenta_socket.c +++ b/drivers/pcmcia/yenta_socket.c @@ -20,7 +20,6 @@ #include <linux/slab.h> #include <pcmcia/ss.h> -#include <pcmcia/cs.h> #include "yenta_socket.h" #include "i82365.h" diff --git a/drivers/s390/char/sclp.c b/drivers/s390/char/sclp.c index f6d72e1f2a38..5707a80b96b6 100644 --- a/drivers/s390/char/sclp.c +++ b/drivers/s390/char/sclp.c @@ -468,7 +468,7 @@ sclp_sync_wait(void) cr0_sync &= 0xffff00a0; cr0_sync |= 0x00000200; __ctl_load(cr0_sync, 0, 0); - __raw_local_irq_stosm(0x01); + __arch_local_irq_stosm(0x01); /* Loop until driver state indicates finished request */ while (sclp_running_state != sclp_running_state_idle) { /* Check for expired request timer */ diff --git a/drivers/scsi/pcmcia/aha152x_stub.c b/drivers/scsi/pcmcia/aha152x_stub.c index 61f49bdcc0c2..e77dd02eccdd 100644 --- a/drivers/scsi/pcmcia/aha152x_stub.c +++ b/drivers/scsi/pcmcia/aha152x_stub.c @@ -49,7 +49,6 @@ #include <scsi/scsi_host.h> #include "aha152x.h" -#include <pcmcia/cs.h> #include <pcmcia/cistpl.h> #include <pcmcia/ds.h> @@ -86,8 +85,6 @@ static void aha152x_release_cs(struct pcmcia_device *link); static void aha152x_detach(struct pcmcia_device *p_dev); static int aha152x_config_cs(struct pcmcia_device *link); -static struct pcmcia_device *dev_list; - static int aha152x_probe(struct pcmcia_device *link) { scsi_info_t *info; @@ -100,11 +97,8 @@ static int aha152x_probe(struct pcmcia_device *link) info->p_dev = link; link->priv = info; - link->resource[0]->end = 0x20; - link->resource[0]->flags |= IO_DATA_PATH_WIDTH_AUTO; - link->conf.Attributes = CONF_ENABLE_IRQ; - link->conf.IntType = INT_MEMORY_AND_IO; - link->conf.Present = PRESENT_OPTION; + link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_IO; + link->config_regs = PRESENT_OPTION; return aha152x_config_cs(link); } /* aha152x_attach */ @@ -123,25 +117,24 @@ static void aha152x_detach(struct pcmcia_device *link) /*====================================================================*/ -static int aha152x_config_check(struct pcmcia_device *p_dev, - cistpl_cftable_entry_t *cfg, - cistpl_cftable_entry_t *dflt, - unsigned int vcc, - void *priv_data) +static int aha152x_config_check(struct pcmcia_device *p_dev, void *priv_data) { p_dev->io_lines = 10; + /* For New Media T&J, look for a SCSI window */ - if (cfg->io.win[0].len >= 0x20) - p_dev->resource[0]->start = cfg->io.win[0].base; - else if ((cfg->io.nwin > 1) && - (cfg->io.win[1].len >= 0x20)) - p_dev->resource[0]->start = cfg->io.win[1].base; - if ((cfg->io.nwin > 0) && - (p_dev->resource[0]->start < 0xffff)) { - if (!pcmcia_request_io(p_dev)) - return 0; - } - return -EINVAL; + if ((p_dev->resource[0]->end < 0x20) && + (p_dev->resource[1]->end >= 0x20)) + p_dev->resource[0]->start = p_dev->resource[1]->start; + + if (p_dev->resource[0]->start >= 0xffff) + return -EINVAL; + + p_dev->resource[1]->start = p_dev->resource[1]->end = 0; + p_dev->resource[0]->end = 0x20; + p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH; + p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_AUTO; + + return pcmcia_request_io(p_dev); } static int aha152x_config_cs(struct pcmcia_device *link) @@ -160,7 +153,7 @@ static int aha152x_config_cs(struct pcmcia_device *link) if (!link->irq) goto failed; - ret = pcmcia_request_configuration(link, &link->conf); + ret = pcmcia_enable_device(link); if (ret) goto failed; @@ -221,9 +214,7 @@ MODULE_DEVICE_TABLE(pcmcia, aha152x_ids); static struct pcmcia_driver aha152x_cs_driver = { .owner = THIS_MODULE, - .drv = { - .name = "aha152x_cs", - }, + .name = "aha152x_cs", .probe = aha152x_probe, .remove = aha152x_detach, .id_table = aha152x_ids, @@ -238,7 +229,6 @@ static int __init init_aha152x_cs(void) static void __exit exit_aha152x_cs(void) { pcmcia_unregister_driver(&aha152x_cs_driver); - BUG_ON(dev_list != NULL); } module_init(init_aha152x_cs); diff --git a/drivers/scsi/pcmcia/fdomain_stub.c b/drivers/scsi/pcmcia/fdomain_stub.c index 13dbe5c48492..cd69c2670f81 100644 --- a/drivers/scsi/pcmcia/fdomain_stub.c +++ b/drivers/scsi/pcmcia/fdomain_stub.c @@ -46,7 +46,6 @@ #include <scsi/scsi_host.h> #include "fdomain.h" -#include <pcmcia/cs.h> #include <pcmcia/cistpl.h> #include <pcmcia/ds.h> @@ -83,11 +82,8 @@ static int fdomain_probe(struct pcmcia_device *link) info->p_dev = link; link->priv = info; - link->resource[0]->end = 0x10; - link->resource[0]->flags |= IO_DATA_PATH_WIDTH_AUTO; - link->conf.Attributes = CONF_ENABLE_IRQ; - link->conf.IntType = INT_MEMORY_AND_IO; - link->conf.Present = PRESENT_OPTION; + link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_IO; + link->config_regs = PRESENT_OPTION; return fdomain_config(link); } /* fdomain_attach */ @@ -105,14 +101,12 @@ static void fdomain_detach(struct pcmcia_device *link) /*====================================================================*/ -static int fdomain_config_check(struct pcmcia_device *p_dev, - cistpl_cftable_entry_t *cfg, - cistpl_cftable_entry_t *dflt, - unsigned int vcc, - void *priv_data) +static int fdomain_config_check(struct pcmcia_device *p_dev, void *priv_data) { p_dev->io_lines = 10; - p_dev->resource[0]->start = cfg->io.win[0].base; + p_dev->resource[0]->end = 0x10; + p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH; + p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_AUTO; return pcmcia_request_io(p_dev); } @@ -132,7 +126,7 @@ static int fdomain_config(struct pcmcia_device *link) if (!link->irq) goto failed; - ret = pcmcia_request_configuration(link, &link->conf); + ret = pcmcia_enable_device(link); if (ret) goto failed; @@ -194,9 +188,7 @@ MODULE_DEVICE_TABLE(pcmcia, fdomain_ids); static struct pcmcia_driver fdomain_cs_driver = { .owner = THIS_MODULE, - .drv = { - .name = "fdomain_cs", - }, + .name = "fdomain_cs", .probe = fdomain_probe, .remove = fdomain_detach, .id_table = fdomain_ids, diff --git a/drivers/scsi/pcmcia/nsp_cs.c b/drivers/scsi/pcmcia/nsp_cs.c index dd9b40306f3d..9326c2c14880 100644 --- a/drivers/scsi/pcmcia/nsp_cs.c +++ b/drivers/scsi/pcmcia/nsp_cs.c @@ -47,7 +47,6 @@ #include <scsi/scsi.h> #include <scsi/scsi_ioctl.h> -#include <pcmcia/cs.h> #include <pcmcia/cistpl.h> #include <pcmcia/cisreg.h> #include <pcmcia/ds.h> @@ -1531,15 +1530,6 @@ static int nsp_eh_host_reset(struct scsi_cmnd *SCpnt) PCMCIA functions **********************************************************************/ -/*====================================================================== - nsp_cs_attach() creates an "instance" of the driver, allocating - local data structures for one device. The device is registered - with Card Services. - - The dev_link structure is initialized, but we don't actually - configure the card at this point -- we wait until we receive a - card insertion event. -======================================================================*/ static int nsp_cs_probe(struct pcmcia_device *link) { scsi_info_t *info; @@ -1557,14 +1547,6 @@ static int nsp_cs_probe(struct pcmcia_device *link) nsp_dbg(NSP_DEBUG_INIT, "info=0x%p", info); - /* The io structure describes IO port mapping */ - link->resource[0]->end = 0x10; - link->resource[0]->flags = IO_DATA_PATH_WIDTH_AUTO; - - /* General socket configuration */ - link->conf.Attributes = CONF_ENABLE_IRQ; - link->conf.IntType = INT_MEMORY_AND_IO; - ret = nsp_cs_config(link); nsp_dbg(NSP_DEBUG_INIT, "link=0x%p", link); @@ -1572,12 +1554,6 @@ static int nsp_cs_probe(struct pcmcia_device *link) } /* nsp_cs_attach */ -/*====================================================================== - This deletes a driver "instance". The device is de-registered - with Card Services. If it has been released, all local data - structures are freed. Otherwise, the structures will be freed - when the device is released. -======================================================================*/ static void nsp_cs_detach(struct pcmcia_device *link) { nsp_dbg(NSP_DEBUG_INIT, "in, link=0x%p", link); @@ -1590,98 +1566,36 @@ static void nsp_cs_detach(struct pcmcia_device *link) } /* nsp_cs_detach */ -/*====================================================================== - nsp_cs_config() is scheduled to run after a CARD_INSERTION event - is received, to configure the PCMCIA socket, and to make the - ethernet device available to the system. -======================================================================*/ - -struct nsp_cs_configdata { - nsp_hw_data *data; - win_req_t req; -}; - -static int nsp_cs_config_check(struct pcmcia_device *p_dev, - cistpl_cftable_entry_t *cfg, - cistpl_cftable_entry_t *dflt, - unsigned int vcc, - void *priv_data) +static int nsp_cs_config_check(struct pcmcia_device *p_dev, void *priv_data) { - struct nsp_cs_configdata *cfg_mem = priv_data; + nsp_hw_data *data = priv_data; - if (cfg->index == 0) + if (p_dev->config_index == 0) return -ENODEV; - /* Does this card need audio output? */ - if (cfg->flags & CISTPL_CFTABLE_AUDIO) { - p_dev->conf.Attributes |= CONF_ENABLE_SPKR; - p_dev->conf.Status = CCSR_AUDIO_ENA; - } - - /* Use power settings for Vcc and Vpp if present */ - /* Note that the CIS values need to be rescaled */ - if (cfg->vcc.present & (1<<CISTPL_POWER_VNOM)) { - if (vcc != cfg->vcc.param[CISTPL_POWER_VNOM]/10000) - return -ENODEV; - else if (dflt->vcc.present & (1<<CISTPL_POWER_VNOM)) { - if (vcc != dflt->vcc.param[CISTPL_POWER_VNOM]/10000) - return -ENODEV; - } - - if (cfg->vpp1.present & (1 << CISTPL_POWER_VNOM)) { - p_dev->conf.Vpp = - cfg->vpp1.param[CISTPL_POWER_VNOM] / 10000; - } else if (dflt->vpp1.present & (1 << CISTPL_POWER_VNOM)) { - p_dev->conf.Vpp = - dflt->vpp1.param[CISTPL_POWER_VNOM] / 10000; - } - - /* Do we need to allocate an interrupt? */ - p_dev->conf.Attributes |= CONF_ENABLE_IRQ; - - /* IO window settings */ - p_dev->resource[0]->end = p_dev->resource[1]->end = 0; - if ((cfg->io.nwin > 0) || (dflt->io.nwin > 0)) { - cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &dflt->io; - p_dev->io_lines = io->flags & CISTPL_IO_LINES_MASK; - p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH; - p_dev->resource[0]->flags |= - pcmcia_io_cfg_data_width(io->flags); - p_dev->resource[0]->start = io->win[0].base; - p_dev->resource[0]->end = io->win[0].len; - if (io->nwin > 1) { - p_dev->resource[1]->flags = - p_dev->resource[0]->flags; - p_dev->resource[1]->start = io->win[1].base; - p_dev->resource[1]->end = io->win[1].len; - } - /* This reserves IO space but doesn't actually enable it */ - if (pcmcia_request_io(p_dev) != 0) - goto next_entry; - } - - if ((cfg->mem.nwin > 0) || (dflt->mem.nwin > 0)) { - cistpl_mem_t *mem = - (cfg->mem.nwin) ? &cfg->mem : &dflt->mem; - cfg_mem->req.Attributes = WIN_DATA_WIDTH_16|WIN_MEMORY_TYPE_CM; - cfg_mem->req.Attributes |= WIN_ENABLE; - cfg_mem->req.Base = mem->win[0].host_addr; - cfg_mem->req.Size = mem->win[0].len; - if (cfg_mem->req.Size < 0x1000) - cfg_mem->req.Size = 0x1000; - cfg_mem->req.AccessSpeed = 0; - if (pcmcia_request_window(p_dev, &cfg_mem->req, &p_dev->win) != 0) - goto next_entry; - if (pcmcia_map_mem_page(p_dev, p_dev->win, - mem->win[0].card_addr) != 0) - goto next_entry; - - cfg_mem->data->MmioAddress = (unsigned long) ioremap_nocache(cfg_mem->req.Base, cfg_mem->req.Size); - cfg_mem->data->MmioLength = cfg_mem->req.Size; - } - /* If we got this far, we're cool! */ - return 0; + /* This reserves IO space but doesn't actually enable it */ + if (pcmcia_request_io(p_dev) != 0) + goto next_entry; + + if (resource_size(p_dev->resource[2])) { + p_dev->resource[2]->flags |= (WIN_DATA_WIDTH_16 | + WIN_MEMORY_TYPE_CM | + WIN_ENABLE); + if (p_dev->resource[2]->end < 0x1000) + p_dev->resource[2]->end = 0x1000; + if (pcmcia_request_window(p_dev, p_dev->resource[2], 0) != 0) + goto next_entry; + if (pcmcia_map_mem_page(p_dev, p_dev->resource[2], + p_dev->card_addr) != 0) + goto next_entry; + + data->MmioAddress = (unsigned long) + ioremap_nocache(p_dev->resource[2]->start, + resource_size(p_dev->resource[2])); + data->MmioLength = resource_size(p_dev->resource[2]); } + /* If we got this far, we're cool! */ + return 0; next_entry: nsp_dbg(NSP_DEBUG_INIT, "next"); @@ -1693,25 +1607,23 @@ static int nsp_cs_config(struct pcmcia_device *link) { int ret; scsi_info_t *info = link->priv; - struct nsp_cs_configdata *cfg_mem; struct Scsi_Host *host; nsp_hw_data *data = &nsp_data_base; nsp_dbg(NSP_DEBUG_INIT, "in"); - cfg_mem = kzalloc(sizeof(*cfg_mem), GFP_KERNEL); - if (!cfg_mem) - return -ENOMEM; - cfg_mem->data = data; + link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_CHECK_VCC | + CONF_AUTO_SET_VPP | CONF_AUTO_AUDIO | CONF_AUTO_SET_IOMEM | + CONF_AUTO_SET_IO; - ret = pcmcia_loop_config(link, nsp_cs_config_check, cfg_mem); + ret = pcmcia_loop_config(link, nsp_cs_config_check, data); if (ret) goto cs_failed; if (pcmcia_request_irq(link, nspintr)) goto cs_failed; - ret = pcmcia_request_configuration(link, &link->conf); + ret = pcmcia_enable_device(link); if (ret) goto cs_failed; @@ -1754,41 +1666,16 @@ static int nsp_cs_config(struct pcmcia_device *link) info->host = host; - /* Finally, report what we've done */ - printk(KERN_INFO "nsp_cs: index 0x%02x: ", - link->conf.ConfigIndex); - if (link->conf.Vpp) { - printk(", Vpp %d.%d", link->conf.Vpp/10, link->conf.Vpp%10); - } - if (link->conf.Attributes & CONF_ENABLE_IRQ) { - printk(", irq %d", link->irq); - } - if (link->resource[0]) - printk(", io %pR", link->resource[0]); - if (link->resource[1]) - printk(" & %pR", link->resource[1]); - if (link->win) - printk(", mem 0x%06lx-0x%06lx", cfg_mem->req.Base, - cfg_mem->req.Base+cfg_mem->req.Size-1); - printk("\n"); - - kfree(cfg_mem); return 0; cs_failed: nsp_dbg(NSP_DEBUG_INIT, "config fail"); nsp_cs_release(link); - kfree(cfg_mem); return -ENODEV; } /* nsp_cs_config */ -/*====================================================================== - After a card is removed, nsp_cs_release() will unregister the net - device, and release the PCMCIA configuration. If the device is - still open, this will be postponed until it is closed. -======================================================================*/ static void nsp_cs_release(struct pcmcia_device *link) { scsi_info_t *info = link->priv; @@ -1807,7 +1694,7 @@ static void nsp_cs_release(struct pcmcia_device *link) scsi_remove_host(info->host); } - if (link->win) { + if (resource_size(link->resource[2])) { if (data != NULL) { iounmap((void *)(data->MmioAddress)); } @@ -1877,9 +1764,7 @@ MODULE_DEVICE_TABLE(pcmcia, nsp_cs_ids); static struct pcmcia_driver nsp_driver = { .owner = THIS_MODULE, - .drv = { - .name = "nsp_cs", - }, + .name = "nsp_cs", .probe = nsp_cs_probe, .remove = nsp_cs_detach, .id_table = nsp_cs_ids, @@ -1889,14 +1774,11 @@ static struct pcmcia_driver nsp_driver = { static int __init nsp_cs_init(void) { - nsp_msg(KERN_INFO, "loading..."); - return pcmcia_register_driver(&nsp_driver); } static void __exit nsp_cs_exit(void) { - nsp_msg(KERN_INFO, "unloading..."); pcmcia_unregister_driver(&nsp_driver); } diff --git a/drivers/scsi/pcmcia/qlogic_stub.c b/drivers/scsi/pcmcia/qlogic_stub.c index eb775f1a523c..9c96ca889ec9 100644 --- a/drivers/scsi/pcmcia/qlogic_stub.c +++ b/drivers/scsi/pcmcia/qlogic_stub.c @@ -48,7 +48,6 @@ #include <scsi/scsi_host.h> #include "../qlogicfas408.h" -#include <pcmcia/cs.h> #include <pcmcia/cistpl.h> #include <pcmcia/ds.h> #include <pcmcia/ciscode.h> @@ -156,11 +155,8 @@ static int qlogic_probe(struct pcmcia_device *link) return -ENOMEM; info->p_dev = link; link->priv = info; - link->resource[0]->end = 16; - link->resource[0]->flags |= IO_DATA_PATH_WIDTH_AUTO; - link->conf.Attributes = CONF_ENABLE_IRQ; - link->conf.IntType = INT_MEMORY_AND_IO; - link->conf.Present = PRESENT_OPTION; + link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_IO; + link->config_regs = PRESENT_OPTION; return qlogic_config(link); } /* qlogic_attach */ @@ -178,15 +174,11 @@ static void qlogic_detach(struct pcmcia_device *link) /*====================================================================*/ -static int qlogic_config_check(struct pcmcia_device *p_dev, - cistpl_cftable_entry_t *cfg, - cistpl_cftable_entry_t *dflt, - unsigned int vcc, - void *priv_data) +static int qlogic_config_check(struct pcmcia_device *p_dev, void *priv_data) { p_dev->io_lines = 10; - p_dev->resource[0]->start = cfg->io.win[0].base; - p_dev->resource[0]->end = cfg->io.win[0].len; + p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH; + p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_AUTO; if (p_dev->resource[0]->start == 0) return -ENODEV; @@ -209,7 +201,7 @@ static int qlogic_config(struct pcmcia_device * link) if (!link->irq) goto failed; - ret = pcmcia_request_configuration(link, &link->conf); + ret = pcmcia_enable_device(link); if (ret) goto failed; @@ -264,7 +256,7 @@ static int qlogic_resume(struct pcmcia_device *link) { scsi_info_t *info = link->priv; - pcmcia_request_configuration(link, &link->conf); + pcmcia_enable_device(link); if ((info->manf_id == MANFID_MACNICA) || (info->manf_id == MANFID_PIONEER) || (info->manf_id == 0x0098)) { @@ -302,9 +294,7 @@ MODULE_DEVICE_TABLE(pcmcia, qlogic_ids); static struct pcmcia_driver qlogic_cs_driver = { .owner = THIS_MODULE, - .drv = { .name = "qlogic_cs", - }, .probe = qlogic_probe, .remove = qlogic_detach, .id_table = qlogic_ids, diff --git a/drivers/scsi/pcmcia/sym53c500_cs.c b/drivers/scsi/pcmcia/sym53c500_cs.c index 321e390c9120..0ae27cb5cd6f 100644 --- a/drivers/scsi/pcmcia/sym53c500_cs.c +++ b/drivers/scsi/pcmcia/sym53c500_cs.c @@ -71,7 +71,6 @@ #include <scsi/scsi.h> #include <scsi/scsi_host.h> -#include <pcmcia/cs.h> #include <pcmcia/cistpl.h> #include <pcmcia/ds.h> #include <pcmcia/ciscode.h> @@ -684,15 +683,11 @@ static struct scsi_host_template sym53c500_driver_template = { .shost_attrs = SYM53C500_shost_attrs }; -static int SYM53C500_config_check(struct pcmcia_device *p_dev, - cistpl_cftable_entry_t *cfg, - cistpl_cftable_entry_t *dflt, - unsigned int vcc, - void *priv_data) +static int SYM53C500_config_check(struct pcmcia_device *p_dev, void *priv_data) { p_dev->io_lines = 10; - p_dev->resource[0]->start = cfg->io.win[0].base; - p_dev->resource[0]->end = cfg->io.win[0].len; + p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH; + p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_AUTO; if (p_dev->resource[0]->start == 0) return -ENODEV; @@ -721,7 +716,7 @@ SYM53C500_config(struct pcmcia_device *link) if (!link->irq) goto failed; - ret = pcmcia_request_configuration(link, &link->conf); + ret = pcmcia_enable_device(link); if (ret) goto failed; @@ -859,10 +854,7 @@ SYM53C500_probe(struct pcmcia_device *link) return -ENOMEM; info->p_dev = link; link->priv = info; - link->resource[0]->end = 16; - link->resource[0]->flags |= IO_DATA_PATH_WIDTH_AUTO; - link->conf.Attributes = CONF_ENABLE_IRQ; - link->conf.IntType = INT_MEMORY_AND_IO; + link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_IO; return SYM53C500_config(link); } /* SYM53C500_attach */ @@ -881,9 +873,7 @@ MODULE_DEVICE_TABLE(pcmcia, sym53c500_ids); static struct pcmcia_driver sym53c500_cs_driver = { .owner = THIS_MODULE, - .drv = { - .name = "sym53c500_cs", - }, + .name = "sym53c500_cs", .probe = SYM53C500_probe, .remove = SYM53C500_detach, .id_table = sym53c500_ids, diff --git a/drivers/scsi/scsi.c b/drivers/scsi/scsi.c index ad0ed212db4a..348fba0a8976 100644 --- a/drivers/scsi/scsi.c +++ b/drivers/scsi/scsi.c @@ -1046,13 +1046,13 @@ int scsi_get_vpd_page(struct scsi_device *sdev, u8 page, unsigned char *buf, /* If the user actually wanted this page, we can skip the rest */ if (page == 0) - return -EINVAL; + return 0; for (i = 0; i < min((int)buf[3], buf_len - 4); i++) if (buf[i + 4] == page) goto found; - if (i < buf[3] && i > buf_len) + if (i < buf[3] && i >= buf_len - 4) /* ran off the end of the buffer, give us benefit of doubt */ goto found; /* The device claims it doesn't support the requested page */ diff --git a/drivers/serial/ioc3_serial.c b/drivers/serial/ioc3_serial.c index 93de907b1208..ee43efc7bdcc 100644 --- a/drivers/serial/ioc3_serial.c +++ b/drivers/serial/ioc3_serial.c @@ -2017,6 +2017,7 @@ ioc3uart_probe(struct ioc3_submodule *is, struct ioc3_driver_data *idd) struct ioc3_port *port; struct ioc3_port *ports[PORTS_PER_CARD]; int phys_port; + int cnt; DPRINT_CONFIG(("%s (0x%p, 0x%p)\n", __func__, is, idd)); @@ -2044,6 +2045,7 @@ ioc3uart_probe(struct ioc3_submodule *is, struct ioc3_driver_data *idd) if (!port) { printk(KERN_WARNING "IOC3 serial memory not available for port\n"); + ret = -ENOMEM; goto out4; } spin_lock_init(&port->ip_lock); @@ -2146,6 +2148,9 @@ ioc3uart_probe(struct ioc3_submodule *is, struct ioc3_driver_data *idd) /* error exits that give back resources */ out4: + for (cnt = 0; cnt < phys_port; cnt++) + kfree(ports[cnt]); + kfree(card_ptr); return ret; } diff --git a/drivers/serial/serial_cs.c b/drivers/serial/serial_cs.c index 7d475b2a79e8..93760b2ea172 100644 --- a/drivers/serial/serial_cs.c +++ b/drivers/serial/serial_cs.c @@ -45,7 +45,6 @@ #include <asm/io.h> #include <asm/system.h> -#include <pcmcia/cs.h> #include <pcmcia/cistpl.h> #include <pcmcia/ciscode.h> #include <pcmcia/ds.h> @@ -183,10 +182,8 @@ static void quirk_config_socket(struct pcmcia_device *link) { struct serial_info *info = link->priv; - if (info->multi) { - link->conf.Present |= PRESENT_EXT_STATUS; - link->conf.ExtStatus = ESR_REQ_ATTN_ENA; - } + if (info->multi) + link->config_flags |= CONF_ENABLE_ESR; } static const struct serial_quirk quirks[] = { @@ -265,13 +262,6 @@ static const struct serial_quirk quirks[] = { static int serial_config(struct pcmcia_device * link); -/*====================================================================== - - After a card is removed, serial_remove() will unregister - the serial device(s), and release the PCMCIA configuration. - -======================================================================*/ - static void serial_remove(struct pcmcia_device *link) { struct serial_info *info = link->priv; @@ -314,14 +304,6 @@ static int serial_resume(struct pcmcia_device *link) return 0; } -/*====================================================================== - - serial_attach() creates an "instance" of the driver, allocating - local data structures for one device. The device is registered - with Card Services. - -======================================================================*/ - static int serial_probe(struct pcmcia_device *link) { struct serial_info *info; @@ -335,25 +317,13 @@ static int serial_probe(struct pcmcia_device *link) info->p_dev = link; link->priv = info; - link->conf.Attributes = CONF_ENABLE_IRQ; - if (do_sound) { - link->conf.Attributes |= CONF_ENABLE_SPKR; - link->conf.Status = CCSR_AUDIO_ENA; - } - link->conf.IntType = INT_MEMORY_AND_IO; + link->config_flags |= CONF_ENABLE_IRQ; + if (do_sound) + link->config_flags |= CONF_ENABLE_SPKR; return serial_config(link); } -/*====================================================================== - - This deletes a driver "instance". The device is de-registered - with Card Services. If it has been released, all local data - structures are freed. Otherwise, the structures will be freed - when the device is released. - -======================================================================*/ - static void serial_detach(struct pcmcia_device *link) { struct serial_info *info = link->priv; @@ -361,11 +331,6 @@ static void serial_detach(struct pcmcia_device *link) dev_dbg(&link->dev, "serial_detach\n"); /* - * Ensure any outstanding scheduled tasks are completed. - */ - flush_scheduled_work(); - - /* * Ensure that the ports have been released. */ serial_remove(link); @@ -430,47 +395,45 @@ static int pfc_config(struct pcmcia_device *p_dev) return -ENODEV; } -static int simple_config_check(struct pcmcia_device *p_dev, - cistpl_cftable_entry_t *cf, - cistpl_cftable_entry_t *dflt, - unsigned int vcc, - void *priv_data) +static int simple_config_check(struct pcmcia_device *p_dev, void *priv_data) { static const int size_table[2] = { 8, 16 }; int *try = priv_data; - if (cf->vpp1.present & (1 << CISTPL_POWER_VNOM)) - p_dev->conf.Vpp = - cf->vpp1.param[CISTPL_POWER_VNOM] / 10000; + if (p_dev->resource[0]->start == 0) + return -ENODEV; - p_dev->io_lines = ((*try & 0x1) == 0) ? - 16 : cf->io.flags & CISTPL_IO_LINES_MASK; + if ((*try & 0x1) == 0) + p_dev->io_lines = 16; - if ((cf->io.nwin > 0) && (cf->io.win[0].len == size_table[(*try >> 1)]) - && (cf->io.win[0].base != 0)) { - p_dev->resource[0]->start = cf->io.win[0].base; - if (!pcmcia_request_io(p_dev)) - return 0; - } - return -EINVAL; + if (p_dev->resource[0]->end != size_table[(*try >> 1)]) + return -ENODEV; + + p_dev->resource[0]->end = 8; + p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH; + p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_8; + + return pcmcia_request_io(p_dev); } static int simple_config_check_notpicky(struct pcmcia_device *p_dev, - cistpl_cftable_entry_t *cf, - cistpl_cftable_entry_t *dflt, - unsigned int vcc, void *priv_data) { static const unsigned int base[5] = { 0x3f8, 0x2f8, 0x3e8, 0x2e8, 0x0 }; int j; - if ((cf->io.nwin > 0) && ((cf->io.flags & CISTPL_IO_LINES_MASK) <= 3)) { - for (j = 0; j < 5; j++) { - p_dev->resource[0]->start = base[j]; - p_dev->io_lines = base[j] ? 16 : 3; - if (!pcmcia_request_io(p_dev)) - return 0; - } + if (p_dev->io_lines > 3) + return -ENODEV; + + p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH; + p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_8; + p_dev->resource[0]->end = 8; + + for (j = 0; j < 5; j++) { + p_dev->resource[0]->start = base[j]; + p_dev->io_lines = base[j] ? 16 : 3; + if (!pcmcia_request_io(p_dev)) + return 0; } return -ENODEV; } @@ -480,11 +443,9 @@ static int simple_config(struct pcmcia_device *link) struct serial_info *info = link->priv; int i = -ENODEV, try; - link->resource[0]->flags |= IO_DATA_PATH_WIDTH_8; - link->resource[0]->end = 8; - /* First pass: look for a config entry that looks normal. * Two tries: without IO aliases, then with aliases */ + link->config_flags |= CONF_AUTO_SET_VPP | CONF_AUTO_SET_IO; for (try = 0; try < 4; try++) if (!pcmcia_loop_config(link, simple_config_check, &try)) goto found_port; @@ -500,7 +461,7 @@ static int simple_config(struct pcmcia_device *link) found_port: if (info->multi && (info->manfid == MANFID_3COM)) - link->conf.ConfigIndex &= ~(0x08); + link->config_index &= ~(0x08); /* * Apply any configuration quirks. @@ -508,51 +469,50 @@ found_port: if (info->quirk && info->quirk->config) info->quirk->config(link); - i = pcmcia_request_configuration(link, &link->conf); + i = pcmcia_enable_device(link); if (i != 0) return -1; return setup_serial(link, info, link->resource[0]->start, link->irq); } -static int multi_config_check(struct pcmcia_device *p_dev, - cistpl_cftable_entry_t *cf, - cistpl_cftable_entry_t *dflt, - unsigned int vcc, - void *priv_data) +static int multi_config_check(struct pcmcia_device *p_dev, void *priv_data) { - int *base2 = priv_data; + int *multi = priv_data; + + if (p_dev->resource[1]->end) + return -EINVAL; /* The quad port cards have bad CIS's, so just look for a window larger than 8 ports and assume it will be right */ - if ((cf->io.nwin == 1) && (cf->io.win[0].len > 8)) { - p_dev->resource[0]->start = cf->io.win[0].base; - p_dev->io_lines = cf->io.flags & CISTPL_IO_LINES_MASK; - if (!pcmcia_request_io(p_dev)) { - *base2 = p_dev->resource[0]->start + 8; - return 0; - } - } - return -ENODEV; + if (p_dev->resource[0]->end <= 8) + return -EINVAL; + + p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH; + p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_8; + p_dev->resource[0]->end = *multi * 8; + + if (pcmcia_request_io(p_dev)) + return -ENODEV; + return 0; } static int multi_config_check_notpicky(struct pcmcia_device *p_dev, - cistpl_cftable_entry_t *cf, - cistpl_cftable_entry_t *dflt, - unsigned int vcc, void *priv_data) { int *base2 = priv_data; - if (cf->io.nwin == 2) { - p_dev->resource[0]->start = cf->io.win[0].base; - p_dev->resource[1]->start = cf->io.win[1].base; - p_dev->io_lines = cf->io.flags & CISTPL_IO_LINES_MASK; - if (!pcmcia_request_io(p_dev)) { - *base2 = p_dev->resource[1]->start; - return 0; - } - } - return -ENODEV; + if (!p_dev->resource[0]->end || !p_dev->resource[1]->end) + return -ENODEV; + + p_dev->resource[0]->end = p_dev->resource[1]->end = 8; + p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH; + p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_8; + + if (pcmcia_request_io(p_dev)) + return -ENODEV; + + *base2 = p_dev->resource[0]->start + 8; + return 0; } static int multi_config(struct pcmcia_device *link) @@ -560,12 +520,12 @@ static int multi_config(struct pcmcia_device *link) struct serial_info *info = link->priv; int i, base2 = 0; + link->config_flags |= CONF_AUTO_SET_IO; /* First, look for a generic full-sized window */ - link->resource[0]->flags |= IO_DATA_PATH_WIDTH_8; - link->resource[0]->end = info->multi * 8; - if (pcmcia_loop_config(link, multi_config_check, &base2)) { + if (!pcmcia_loop_config(link, multi_config_check, &info->multi)) + base2 = link->resource[0]->start + 8; + else { /* If that didn't work, look for two windows */ - link->resource[0]->end = link->resource[1]->end = 8; info->multi = 2; if (pcmcia_loop_config(link, multi_config_check_notpicky, &base2)) { @@ -584,7 +544,7 @@ static int multi_config(struct pcmcia_device *link) if (info->quirk && info->quirk->config) info->quirk->config(link); - i = pcmcia_request_configuration(link, &link->conf); + i = pcmcia_enable_device(link); if (i != 0) return -ENODEV; @@ -596,11 +556,11 @@ static int multi_config(struct pcmcia_device *link) info->prodid == PRODID_POSSIO_GCC)) { int err; - if (link->conf.ConfigIndex == 1 || - link->conf.ConfigIndex == 3) { + if (link->config_index == 1 || + link->config_index == 3) { err = setup_serial(link, info, base2, link->irq); - base2 = link->resource[0]->start;; + base2 = link->resource[0]->start; } else { err = setup_serial(link, info, link->resource[0]->start, link->irq); @@ -624,33 +584,24 @@ static int multi_config(struct pcmcia_device *link) return 0; } -static int serial_check_for_multi(struct pcmcia_device *p_dev, - cistpl_cftable_entry_t *cf, - cistpl_cftable_entry_t *dflt, - unsigned int vcc, - void *priv_data) +static int serial_check_for_multi(struct pcmcia_device *p_dev, void *priv_data) { struct serial_info *info = p_dev->priv; - if ((cf->io.nwin == 1) && (cf->io.win[0].len % 8 == 0)) - info->multi = cf->io.win[0].len >> 3; + if (!p_dev->resource[0]->end) + return -EINVAL; + + if ((!p_dev->resource[1]->end) && (p_dev->resource[0]->end % 8 == 0)) + info->multi = p_dev->resource[0]->end >> 3; - if ((cf->io.nwin == 2) && (cf->io.win[0].len == 8) && - (cf->io.win[1].len == 8)) + if ((p_dev->resource[1]->end) && (p_dev->resource[0]->end == 8) + && (p_dev->resource[1]->end == 8)) info->multi = 2; return 0; /* break */ } -/*====================================================================== - - serial_config() is scheduled to run after a CARD_INSERTION event - is received, to configure the PCMCIA socket, and to make the - serial device available to the system. - -======================================================================*/ - static int serial_config(struct pcmcia_device * link) { struct serial_info *info = link->priv; @@ -894,9 +845,7 @@ MODULE_FIRMWARE("cis/RS-COM-2P.cis"); static struct pcmcia_driver serial_cs_driver = { .owner = THIS_MODULE, - .drv = { - .name = "serial_cs", - }, + .name = "serial_cs", .probe = serial_probe, .remove = serial_detach, .id_table = serial_ids, diff --git a/drivers/spi/Kconfig b/drivers/spi/Kconfig index 7e631fa51098..4b9eec68fad6 100644 --- a/drivers/spi/Kconfig +++ b/drivers/spi/Kconfig @@ -198,12 +198,27 @@ config SPI_MPC512x_PSC This enables using the Freescale MPC5121 Programmable Serial Controller in SPI master mode. -config SPI_MPC8xxx - tristate "Freescale MPC8xxx SPI controller" +config SPI_FSL_LIB + tristate depends on FSL_SOC + +config SPI_FSL_SPI + tristate "Freescale SPI controller" + depends on FSL_SOC + select SPI_FSL_LIB help - This enables using the Freescale MPC8xxx SPI controllers in master - mode. + This enables using the Freescale SPI controllers in master mode. + MPC83xx platform uses the controller in cpu mode or CPM/QE mode. + MPC8569 uses the controller in QE mode, MPC8610 in cpu mode. + +config SPI_FSL_ESPI + tristate "Freescale eSPI controller" + depends on FSL_SOC + select SPI_FSL_LIB + help + This enables using the Freescale eSPI controllers in master mode. + From MPC8536, 85xx platform uses the controller, and all P10xx, + P20xx, P30xx,P40xx, P50xx uses this controller. config SPI_OMAP_UWIRE tristate "OMAP1 MicroWire" @@ -314,6 +329,13 @@ config SPI_STMP3XXX help SPI driver for Freescale STMP37xx/378x SoC SSP interface +config SPI_TOPCLIFF_PCH + tristate "Topcliff PCH SPI Controller" + depends on PCI + help + SPI driver for the Topcliff PCH (Platform Controller Hub) SPI bus + used in some x86 embedded processors. + config SPI_TXX9 tristate "Toshiba TXx9 SPI controller" depends on GENERIC_GPIO && CPU_TX49XX diff --git a/drivers/spi/Makefile b/drivers/spi/Makefile index e9cbd18217a0..557aaadf56b2 100644 --- a/drivers/spi/Makefile +++ b/drivers/spi/Makefile @@ -2,9 +2,7 @@ # Makefile for kernel SPI drivers. # -ifeq ($(CONFIG_SPI_DEBUG),y) -EXTRA_CFLAGS += -DDEBUG -endif +ccflags-$(CONFIG_SPI_DEBUG) := -DDEBUG # small core, mostly translating board-specific # config declarations into driver model code @@ -34,11 +32,14 @@ obj-$(CONFIG_SPI_PL022) += amba-pl022.o obj-$(CONFIG_SPI_MPC512x_PSC) += mpc512x_psc_spi.o obj-$(CONFIG_SPI_MPC52xx_PSC) += mpc52xx_psc_spi.o obj-$(CONFIG_SPI_MPC52xx) += mpc52xx_spi.o -obj-$(CONFIG_SPI_MPC8xxx) += spi_mpc8xxx.o +obj-$(CONFIG_SPI_FSL_LIB) += spi_fsl_lib.o +obj-$(CONFIG_SPI_FSL_ESPI) += spi_fsl_espi.o +obj-$(CONFIG_SPI_FSL_SPI) += spi_fsl_spi.o obj-$(CONFIG_SPI_PPC4xx) += spi_ppc4xx.o obj-$(CONFIG_SPI_S3C24XX_GPIO) += spi_s3c24xx_gpio.o obj-$(CONFIG_SPI_S3C24XX) += spi_s3c24xx_hw.o obj-$(CONFIG_SPI_S3C64XX) += spi_s3c64xx.o +obj-$(CONFIG_SPI_TOPCLIFF_PCH) += spi_topcliff_pch.o obj-$(CONFIG_SPI_TXX9) += spi_txx9.o obj-$(CONFIG_SPI_XILINX) += xilinx_spi.o obj-$(CONFIG_SPI_XILINX_OF) += xilinx_spi_of.o diff --git a/drivers/spi/amba-pl022.c b/drivers/spi/amba-pl022.c index 4c37c4e28647..fb3d1b31772d 100644 --- a/drivers/spi/amba-pl022.c +++ b/drivers/spi/amba-pl022.c @@ -27,7 +27,6 @@ /* * TODO: * - add timeout on polled transfers - * - add generic DMA framework support */ #include <linux/init.h> @@ -45,6 +44,9 @@ #include <linux/amba/pl022.h> #include <linux/io.h> #include <linux/slab.h> +#include <linux/dmaengine.h> +#include <linux/dma-mapping.h> +#include <linux/scatterlist.h> /* * This macro is used to define some register default values. @@ -381,6 +383,14 @@ struct pl022 { enum ssp_reading read; enum ssp_writing write; u32 exp_fifo_level; + /* DMA settings */ +#ifdef CONFIG_DMA_ENGINE + struct dma_chan *dma_rx_channel; + struct dma_chan *dma_tx_channel; + struct sg_table sgt_rx; + struct sg_table sgt_tx; + char *dummypage; +#endif }; /** @@ -406,7 +416,7 @@ struct chip_data { u16 dmacr; u16 cpsr; u8 n_bytes; - u8 enable_dma:1; + bool enable_dma; enum ssp_reading read; enum ssp_writing write; void (*cs_control) (u32 command); @@ -763,6 +773,371 @@ static void *next_transfer(struct pl022 *pl022) } return STATE_DONE; } + +/* + * This DMA functionality is only compiled in if we have + * access to the generic DMA devices/DMA engine. + */ +#ifdef CONFIG_DMA_ENGINE +static void unmap_free_dma_scatter(struct pl022 *pl022) +{ + /* Unmap and free the SG tables */ + dma_unmap_sg(&pl022->adev->dev, pl022->sgt_tx.sgl, + pl022->sgt_tx.nents, DMA_TO_DEVICE); + dma_unmap_sg(&pl022->adev->dev, pl022->sgt_rx.sgl, + pl022->sgt_rx.nents, DMA_FROM_DEVICE); + sg_free_table(&pl022->sgt_rx); + sg_free_table(&pl022->sgt_tx); +} + +static void dma_callback(void *data) +{ + struct pl022 *pl022 = data; + struct spi_message *msg = pl022->cur_msg; + + BUG_ON(!pl022->sgt_rx.sgl); + +#ifdef VERBOSE_DEBUG + /* + * Optionally dump out buffers to inspect contents, this is + * good if you want to convince yourself that the loopback + * read/write contents are the same, when adopting to a new + * DMA engine. + */ + { + struct scatterlist *sg; + unsigned int i; + + dma_sync_sg_for_cpu(&pl022->adev->dev, + pl022->sgt_rx.sgl, + pl022->sgt_rx.nents, + DMA_FROM_DEVICE); + + for_each_sg(pl022->sgt_rx.sgl, sg, pl022->sgt_rx.nents, i) { + dev_dbg(&pl022->adev->dev, "SPI RX SG ENTRY: %d", i); + print_hex_dump(KERN_ERR, "SPI RX: ", + DUMP_PREFIX_OFFSET, + 16, + 1, + sg_virt(sg), + sg_dma_len(sg), + 1); + } + for_each_sg(pl022->sgt_tx.sgl, sg, pl022->sgt_tx.nents, i) { + dev_dbg(&pl022->adev->dev, "SPI TX SG ENTRY: %d", i); + print_hex_dump(KERN_ERR, "SPI TX: ", + DUMP_PREFIX_OFFSET, + 16, + 1, + sg_virt(sg), + sg_dma_len(sg), + 1); + } + } +#endif + + unmap_free_dma_scatter(pl022); + + /* Update total bytes transfered */ + msg->actual_length += pl022->cur_transfer->len; + if (pl022->cur_transfer->cs_change) + pl022->cur_chip-> + cs_control(SSP_CHIP_DESELECT); + + /* Move to next transfer */ + msg->state = next_transfer(pl022); + tasklet_schedule(&pl022->pump_transfers); +} + +static void setup_dma_scatter(struct pl022 *pl022, + void *buffer, + unsigned int length, + struct sg_table *sgtab) +{ + struct scatterlist *sg; + int bytesleft = length; + void *bufp = buffer; + int mapbytes; + int i; + + if (buffer) { + for_each_sg(sgtab->sgl, sg, sgtab->nents, i) { + /* + * If there are less bytes left than what fits + * in the current page (plus page alignment offset) + * we just feed in this, else we stuff in as much + * as we can. + */ + if (bytesleft < (PAGE_SIZE - offset_in_page(bufp))) + mapbytes = bytesleft; + else + mapbytes = PAGE_SIZE - offset_in_page(bufp); + sg_set_page(sg, virt_to_page(bufp), + mapbytes, offset_in_page(bufp)); + bufp += mapbytes; + bytesleft -= mapbytes; + dev_dbg(&pl022->adev->dev, + "set RX/TX target page @ %p, %d bytes, %d left\n", + bufp, mapbytes, bytesleft); + } + } else { + /* Map the dummy buffer on every page */ + for_each_sg(sgtab->sgl, sg, sgtab->nents, i) { + if (bytesleft < PAGE_SIZE) + mapbytes = bytesleft; + else + mapbytes = PAGE_SIZE; + sg_set_page(sg, virt_to_page(pl022->dummypage), + mapbytes, 0); + bytesleft -= mapbytes; + dev_dbg(&pl022->adev->dev, + "set RX/TX to dummy page %d bytes, %d left\n", + mapbytes, bytesleft); + + } + } + BUG_ON(bytesleft); +} + +/** + * configure_dma - configures the channels for the next transfer + * @pl022: SSP driver's private data structure + */ +static int configure_dma(struct pl022 *pl022) +{ + struct dma_slave_config rx_conf = { + .src_addr = SSP_DR(pl022->phybase), + .direction = DMA_FROM_DEVICE, + .src_maxburst = pl022->vendor->fifodepth >> 1, + }; + struct dma_slave_config tx_conf = { + .dst_addr = SSP_DR(pl022->phybase), + .direction = DMA_TO_DEVICE, + .dst_maxburst = pl022->vendor->fifodepth >> 1, + }; + unsigned int pages; + int ret; + int sglen; + struct dma_chan *rxchan = pl022->dma_rx_channel; + struct dma_chan *txchan = pl022->dma_tx_channel; + struct dma_async_tx_descriptor *rxdesc; + struct dma_async_tx_descriptor *txdesc; + dma_cookie_t cookie; + + /* Check that the channels are available */ + if (!rxchan || !txchan) + return -ENODEV; + + switch (pl022->read) { + case READING_NULL: + /* Use the same as for writing */ + rx_conf.src_addr_width = DMA_SLAVE_BUSWIDTH_UNDEFINED; + break; + case READING_U8: + rx_conf.src_addr_width = DMA_SLAVE_BUSWIDTH_1_BYTE; + break; + case READING_U16: + rx_conf.src_addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES; + break; + case READING_U32: + rx_conf.src_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES; + break; + } + + switch (pl022->write) { + case WRITING_NULL: + /* Use the same as for reading */ + tx_conf.dst_addr_width = DMA_SLAVE_BUSWIDTH_UNDEFINED; + break; + case WRITING_U8: + tx_conf.dst_addr_width = DMA_SLAVE_BUSWIDTH_1_BYTE; + break; + case WRITING_U16: + tx_conf.dst_addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES; + break; + case WRITING_U32: + tx_conf.dst_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;; + break; + } + + /* SPI pecularity: we need to read and write the same width */ + if (rx_conf.src_addr_width == DMA_SLAVE_BUSWIDTH_UNDEFINED) + rx_conf.src_addr_width = tx_conf.dst_addr_width; + if (tx_conf.dst_addr_width == DMA_SLAVE_BUSWIDTH_UNDEFINED) + tx_conf.dst_addr_width = rx_conf.src_addr_width; + BUG_ON(rx_conf.src_addr_width != tx_conf.dst_addr_width); + + rxchan->device->device_control(rxchan, DMA_SLAVE_CONFIG, + (unsigned long) &rx_conf); + txchan->device->device_control(txchan, DMA_SLAVE_CONFIG, + (unsigned long) &tx_conf); + + /* Create sglists for the transfers */ + pages = (pl022->cur_transfer->len >> PAGE_SHIFT) + 1; + dev_dbg(&pl022->adev->dev, "using %d pages for transfer\n", pages); + + ret = sg_alloc_table(&pl022->sgt_rx, pages, GFP_KERNEL); + if (ret) + goto err_alloc_rx_sg; + + ret = sg_alloc_table(&pl022->sgt_tx, pages, GFP_KERNEL); + if (ret) + goto err_alloc_tx_sg; + + /* Fill in the scatterlists for the RX+TX buffers */ + setup_dma_scatter(pl022, pl022->rx, + pl022->cur_transfer->len, &pl022->sgt_rx); + setup_dma_scatter(pl022, pl022->tx, + pl022->cur_transfer->len, &pl022->sgt_tx); + + /* Map DMA buffers */ + sglen = dma_map_sg(&pl022->adev->dev, pl022->sgt_rx.sgl, + pl022->sgt_rx.nents, DMA_FROM_DEVICE); + if (!sglen) + goto err_rx_sgmap; + + sglen = dma_map_sg(&pl022->adev->dev, pl022->sgt_tx.sgl, + pl022->sgt_tx.nents, DMA_TO_DEVICE); + if (!sglen) + goto err_tx_sgmap; + + /* Send both scatterlists */ + rxdesc = rxchan->device->device_prep_slave_sg(rxchan, + pl022->sgt_rx.sgl, + pl022->sgt_rx.nents, + DMA_FROM_DEVICE, + DMA_PREP_INTERRUPT | DMA_CTRL_ACK); + if (!rxdesc) + goto err_rxdesc; + + txdesc = txchan->device->device_prep_slave_sg(txchan, + pl022->sgt_tx.sgl, + pl022->sgt_tx.nents, + DMA_TO_DEVICE, + DMA_PREP_INTERRUPT | DMA_CTRL_ACK); + if (!txdesc) + goto err_txdesc; + + /* Put the callback on the RX transfer only, that should finish last */ + rxdesc->callback = dma_callback; + rxdesc->callback_param = pl022; + + /* Submit and fire RX and TX with TX last so we're ready to read! */ + cookie = rxdesc->tx_submit(rxdesc); + if (dma_submit_error(cookie)) + goto err_submit_rx; + cookie = txdesc->tx_submit(txdesc); + if (dma_submit_error(cookie)) + goto err_submit_tx; + rxchan->device->device_issue_pending(rxchan); + txchan->device->device_issue_pending(txchan); + + return 0; + +err_submit_tx: +err_submit_rx: +err_txdesc: + txchan->device->device_control(txchan, DMA_TERMINATE_ALL, 0); +err_rxdesc: + rxchan->device->device_control(rxchan, DMA_TERMINATE_ALL, 0); + dma_unmap_sg(&pl022->adev->dev, pl022->sgt_tx.sgl, + pl022->sgt_tx.nents, DMA_TO_DEVICE); +err_tx_sgmap: + dma_unmap_sg(&pl022->adev->dev, pl022->sgt_rx.sgl, + pl022->sgt_tx.nents, DMA_FROM_DEVICE); +err_rx_sgmap: + sg_free_table(&pl022->sgt_tx); +err_alloc_tx_sg: + sg_free_table(&pl022->sgt_rx); +err_alloc_rx_sg: + return -ENOMEM; +} + +static int __init pl022_dma_probe(struct pl022 *pl022) +{ + dma_cap_mask_t mask; + + /* Try to acquire a generic DMA engine slave channel */ + dma_cap_zero(mask); + dma_cap_set(DMA_SLAVE, mask); + /* + * We need both RX and TX channels to do DMA, else do none + * of them. + */ + pl022->dma_rx_channel = dma_request_channel(mask, + pl022->master_info->dma_filter, + pl022->master_info->dma_rx_param); + if (!pl022->dma_rx_channel) { + dev_err(&pl022->adev->dev, "no RX DMA channel!\n"); + goto err_no_rxchan; + } + + pl022->dma_tx_channel = dma_request_channel(mask, + pl022->master_info->dma_filter, + pl022->master_info->dma_tx_param); + if (!pl022->dma_tx_channel) { + dev_err(&pl022->adev->dev, "no TX DMA channel!\n"); + goto err_no_txchan; + } + + pl022->dummypage = kmalloc(PAGE_SIZE, GFP_KERNEL); + if (!pl022->dummypage) { + dev_err(&pl022->adev->dev, "no DMA dummypage!\n"); + goto err_no_dummypage; + } + + dev_info(&pl022->adev->dev, "setup for DMA on RX %s, TX %s\n", + dma_chan_name(pl022->dma_rx_channel), + dma_chan_name(pl022->dma_tx_channel)); + + return 0; + +err_no_dummypage: + dma_release_channel(pl022->dma_tx_channel); +err_no_txchan: + dma_release_channel(pl022->dma_rx_channel); + pl022->dma_rx_channel = NULL; +err_no_rxchan: + return -ENODEV; +} + +static void terminate_dma(struct pl022 *pl022) +{ + struct dma_chan *rxchan = pl022->dma_rx_channel; + struct dma_chan *txchan = pl022->dma_tx_channel; + + rxchan->device->device_control(rxchan, DMA_TERMINATE_ALL, 0); + txchan->device->device_control(txchan, DMA_TERMINATE_ALL, 0); + unmap_free_dma_scatter(pl022); +} + +static void pl022_dma_remove(struct pl022 *pl022) +{ + if (pl022->busy) + terminate_dma(pl022); + if (pl022->dma_tx_channel) + dma_release_channel(pl022->dma_tx_channel); + if (pl022->dma_rx_channel) + dma_release_channel(pl022->dma_rx_channel); + kfree(pl022->dummypage); +} + +#else +static inline int configure_dma(struct pl022 *pl022) +{ + return -ENODEV; +} + +static inline int pl022_dma_probe(struct pl022 *pl022) +{ + return 0; +} + +static inline void pl022_dma_remove(struct pl022 *pl022) +{ +} +#endif + /** * pl022_interrupt_handler - Interrupt handler for SSP controller * @@ -794,14 +1169,17 @@ static irqreturn_t pl022_interrupt_handler(int irq, void *dev_id) if (unlikely(!irq_status)) return IRQ_NONE; - /* This handles the error code interrupts */ + /* + * This handles the FIFO interrupts, the timeout + * interrupts are flatly ignored, they cannot be + * trusted. + */ if (unlikely(irq_status & SSP_MIS_MASK_RORMIS)) { /* * Overrun interrupt - bail out since our Data has been * corrupted */ - dev_err(&pl022->adev->dev, - "FIFO overrun\n"); + dev_err(&pl022->adev->dev, "FIFO overrun\n"); if (readw(SSP_SR(pl022->virtbase)) & SSP_SR_MASK_RFF) dev_err(&pl022->adev->dev, "RXFIFO is full\n"); @@ -896,8 +1274,8 @@ static int set_up_next_transfer(struct pl022 *pl022, } /** - * pump_transfers - Tasklet function which schedules next interrupt transfer - * when running in interrupt transfer mode. + * pump_transfers - Tasklet function which schedules next transfer + * when running in interrupt or DMA transfer mode. * @data: SSP driver private data structure * */ @@ -954,65 +1332,23 @@ static void pump_transfers(unsigned long data) } /* Flush the FIFOs and let's go! */ flush(pl022); - writew(ENABLE_ALL_INTERRUPTS, SSP_IMSC(pl022->virtbase)); -} - -/** - * NOT IMPLEMENTED - * configure_dma - It configures the DMA pipes for DMA transfers - * @data: SSP driver's private data structure - * - */ -static int configure_dma(void *data) -{ - struct pl022 *pl022 = data; - dev_dbg(&pl022->adev->dev, "configure DMA\n"); - return -ENOTSUPP; -} - -/** - * do_dma_transfer - It handles transfers of the current message - * if it is DMA xfer. - * NOT FULLY IMPLEMENTED - * @data: SSP driver's private data structure - */ -static void do_dma_transfer(void *data) -{ - struct pl022 *pl022 = data; - - if (configure_dma(data)) { - dev_dbg(&pl022->adev->dev, "configuration of DMA Failed!\n"); - goto err_config_dma; - } - /* TODO: Implememt DMA setup of pipes here */ - - /* Enable target chip, set up transfer */ - pl022->cur_chip->cs_control(SSP_CHIP_SELECT); - if (set_up_next_transfer(pl022, pl022->cur_transfer)) { - /* Error path */ - pl022->cur_msg->state = STATE_ERROR; - pl022->cur_msg->status = -EIO; - giveback(pl022); + if (pl022->cur_chip->enable_dma) { + if (configure_dma(pl022)) { + dev_dbg(&pl022->adev->dev, + "configuration of DMA failed, fall back to interrupt mode\n"); + goto err_config_dma; + } return; } - /* Enable SSP */ - writew((readw(SSP_CR1(pl022->virtbase)) | SSP_CR1_MASK_SSE), - SSP_CR1(pl022->virtbase)); - - /* TODO: Enable the DMA transfer here */ - return; - err_config_dma: - pl022->cur_msg->state = STATE_ERROR; - pl022->cur_msg->status = -EIO; - giveback(pl022); - return; +err_config_dma: + writew(ENABLE_ALL_INTERRUPTS, SSP_IMSC(pl022->virtbase)); } -static void do_interrupt_transfer(void *data) +static void do_interrupt_dma_transfer(struct pl022 *pl022) { - struct pl022 *pl022 = data; + u32 irqflags = ENABLE_ALL_INTERRUPTS; /* Enable target chip */ pl022->cur_chip->cs_control(SSP_CHIP_SELECT); @@ -1023,15 +1359,26 @@ static void do_interrupt_transfer(void *data) giveback(pl022); return; } + /* If we're using DMA, set up DMA here */ + if (pl022->cur_chip->enable_dma) { + /* Configure DMA transfer */ + if (configure_dma(pl022)) { + dev_dbg(&pl022->adev->dev, + "configuration of DMA failed, fall back to interrupt mode\n"); + goto err_config_dma; + } + /* Disable interrupts in DMA mode, IRQ from DMA controller */ + irqflags = DISABLE_ALL_INTERRUPTS; + } +err_config_dma: /* Enable SSP, turn on interrupts */ writew((readw(SSP_CR1(pl022->virtbase)) | SSP_CR1_MASK_SSE), SSP_CR1(pl022->virtbase)); - writew(ENABLE_ALL_INTERRUPTS, SSP_IMSC(pl022->virtbase)); + writew(irqflags, SSP_IMSC(pl022->virtbase)); } -static void do_polling_transfer(void *data) +static void do_polling_transfer(struct pl022 *pl022) { - struct pl022 *pl022 = data; struct spi_message *message = NULL; struct spi_transfer *transfer = NULL; struct spi_transfer *previous = NULL; @@ -1101,7 +1448,7 @@ static void do_polling_transfer(void *data) * * This function checks if there is any spi message in the queue that * needs processing and delegate control to appropriate function - * do_polling_transfer()/do_interrupt_transfer()/do_dma_transfer() + * do_polling_transfer()/do_interrupt_dma_transfer() * based on the kind of the transfer * */ @@ -1150,10 +1497,8 @@ static void pump_messages(struct work_struct *work) if (pl022->cur_chip->xfer_type == POLLING_TRANSFER) do_polling_transfer(pl022); - else if (pl022->cur_chip->xfer_type == INTERRUPT_TRANSFER) - do_interrupt_transfer(pl022); else - do_dma_transfer(pl022); + do_interrupt_dma_transfer(pl022); } @@ -1248,100 +1593,56 @@ static int destroy_queue(struct pl022 *pl022) } static int verify_controller_parameters(struct pl022 *pl022, - struct pl022_config_chip *chip_info) + struct pl022_config_chip const *chip_info) { - if ((chip_info->lbm != LOOPBACK_ENABLED) - && (chip_info->lbm != LOOPBACK_DISABLED)) { - dev_err(chip_info->dev, - "loopback Mode is configured incorrectly\n"); - return -EINVAL; - } if ((chip_info->iface < SSP_INTERFACE_MOTOROLA_SPI) || (chip_info->iface > SSP_INTERFACE_UNIDIRECTIONAL)) { - dev_err(chip_info->dev, + dev_err(&pl022->adev->dev, "interface is configured incorrectly\n"); return -EINVAL; } if ((chip_info->iface == SSP_INTERFACE_UNIDIRECTIONAL) && (!pl022->vendor->unidir)) { - dev_err(chip_info->dev, + dev_err(&pl022->adev->dev, "unidirectional mode not supported in this " "hardware version\n"); return -EINVAL; } if ((chip_info->hierarchy != SSP_MASTER) && (chip_info->hierarchy != SSP_SLAVE)) { - dev_err(chip_info->dev, + dev_err(&pl022->adev->dev, "hierarchy is configured incorrectly\n"); return -EINVAL; } - if (((chip_info->clk_freq).cpsdvsr < CPSDVR_MIN) - || ((chip_info->clk_freq).cpsdvsr > CPSDVR_MAX)) { - dev_err(chip_info->dev, - "cpsdvsr is configured incorrectly\n"); - return -EINVAL; - } - if ((chip_info->endian_rx != SSP_RX_MSB) - && (chip_info->endian_rx != SSP_RX_LSB)) { - dev_err(chip_info->dev, - "RX FIFO endianess is configured incorrectly\n"); - return -EINVAL; - } - if ((chip_info->endian_tx != SSP_TX_MSB) - && (chip_info->endian_tx != SSP_TX_LSB)) { - dev_err(chip_info->dev, - "TX FIFO endianess is configured incorrectly\n"); - return -EINVAL; - } - if ((chip_info->data_size < SSP_DATA_BITS_4) - || (chip_info->data_size > SSP_DATA_BITS_32)) { - dev_err(chip_info->dev, - "DATA Size is configured incorrectly\n"); - return -EINVAL; - } if ((chip_info->com_mode != INTERRUPT_TRANSFER) && (chip_info->com_mode != DMA_TRANSFER) && (chip_info->com_mode != POLLING_TRANSFER)) { - dev_err(chip_info->dev, + dev_err(&pl022->adev->dev, "Communication mode is configured incorrectly\n"); return -EINVAL; } if ((chip_info->rx_lev_trig < SSP_RX_1_OR_MORE_ELEM) || (chip_info->rx_lev_trig > SSP_RX_32_OR_MORE_ELEM)) { - dev_err(chip_info->dev, + dev_err(&pl022->adev->dev, "RX FIFO Trigger Level is configured incorrectly\n"); return -EINVAL; } if ((chip_info->tx_lev_trig < SSP_TX_1_OR_MORE_EMPTY_LOC) || (chip_info->tx_lev_trig > SSP_TX_32_OR_MORE_EMPTY_LOC)) { - dev_err(chip_info->dev, + dev_err(&pl022->adev->dev, "TX FIFO Trigger Level is configured incorrectly\n"); return -EINVAL; } - if (chip_info->iface == SSP_INTERFACE_MOTOROLA_SPI) { - if ((chip_info->clk_phase != SSP_CLK_FIRST_EDGE) - && (chip_info->clk_phase != SSP_CLK_SECOND_EDGE)) { - dev_err(chip_info->dev, - "Clock Phase is configured incorrectly\n"); - return -EINVAL; - } - if ((chip_info->clk_pol != SSP_CLK_POL_IDLE_LOW) - && (chip_info->clk_pol != SSP_CLK_POL_IDLE_HIGH)) { - dev_err(chip_info->dev, - "Clock Polarity is configured incorrectly\n"); - return -EINVAL; - } - } if (chip_info->iface == SSP_INTERFACE_NATIONAL_MICROWIRE) { if ((chip_info->ctrl_len < SSP_BITS_4) || (chip_info->ctrl_len > SSP_BITS_32)) { - dev_err(chip_info->dev, + dev_err(&pl022->adev->dev, "CTRL LEN is configured incorrectly\n"); return -EINVAL; } if ((chip_info->wait_state != SSP_MWIRE_WAIT_ZERO) && (chip_info->wait_state != SSP_MWIRE_WAIT_ONE)) { - dev_err(chip_info->dev, + dev_err(&pl022->adev->dev, "Wait State is configured incorrectly\n"); return -EINVAL; } @@ -1350,24 +1651,20 @@ static int verify_controller_parameters(struct pl022 *pl022, if ((chip_info->duplex != SSP_MICROWIRE_CHANNEL_FULL_DUPLEX) && (chip_info->duplex != - SSP_MICROWIRE_CHANNEL_HALF_DUPLEX)) - dev_err(chip_info->dev, + SSP_MICROWIRE_CHANNEL_HALF_DUPLEX)) { + dev_err(&pl022->adev->dev, "Microwire duplex mode is configured incorrectly\n"); return -EINVAL; + } } else { if (chip_info->duplex != SSP_MICROWIRE_CHANNEL_FULL_DUPLEX) - dev_err(chip_info->dev, + dev_err(&pl022->adev->dev, "Microwire half duplex mode requested," " but this is only available in the" " ST version of PL022\n"); return -EINVAL; } } - if (chip_info->cs_control == NULL) { - dev_warn(chip_info->dev, - "Chip Select Function is NULL for this chip\n"); - chip_info->cs_control = null_cs_control; - } return 0; } @@ -1467,22 +1764,24 @@ static int calculate_effective_freq(struct pl022 *pl022, return 0; } -/** - * NOT IMPLEMENTED - * process_dma_info - Processes the DMA info provided by client drivers - * @chip_info: chip info provided by client device - * @chip: Runtime state maintained by the SSP controller for each spi device - * - * This function processes and stores DMA config provided by client driver - * into the runtime state maintained by the SSP controller driver + +/* + * A piece of default chip info unless the platform + * supplies it. */ -static int process_dma_info(struct pl022_config_chip *chip_info, - struct chip_data *chip) -{ - dev_err(chip_info->dev, - "cannot process DMA info, DMA not implemented!\n"); - return -ENOTSUPP; -} +static const struct pl022_config_chip pl022_default_chip_info = { + .com_mode = POLLING_TRANSFER, + .iface = SSP_INTERFACE_MOTOROLA_SPI, + .hierarchy = SSP_SLAVE, + .slave_tx_disable = DO_NOT_DRIVE_TX, + .rx_lev_trig = SSP_RX_1_OR_MORE_ELEM, + .tx_lev_trig = SSP_TX_1_OR_MORE_EMPTY_LOC, + .ctrl_len = SSP_BITS_8, + .wait_state = SSP_MWIRE_WAIT_ZERO, + .duplex = SSP_MICROWIRE_CHANNEL_FULL_DUPLEX, + .cs_control = null_cs_control, +}; + /** * pl022_setup - setup function registered to SPI master framework @@ -1496,23 +1795,15 @@ static int process_dma_info(struct pl022_config_chip *chip_info, * controller hardware here, that is not done until the actual transfer * commence. */ - -/* FIXME: JUST GUESSING the spi->mode bits understood by this driver */ -#define MODEBITS (SPI_CPOL | SPI_CPHA | SPI_CS_HIGH \ - | SPI_LSB_FIRST | SPI_LOOP) - static int pl022_setup(struct spi_device *spi) { - struct pl022_config_chip *chip_info; + struct pl022_config_chip const *chip_info; struct chip_data *chip; + struct ssp_clock_params clk_freq; int status = 0; struct pl022 *pl022 = spi_master_get_devdata(spi->master); - - if (spi->mode & ~MODEBITS) { - dev_dbg(&spi->dev, "unsupported mode bits %x\n", - spi->mode & ~MODEBITS); - return -EINVAL; - } + unsigned int bits = spi->bits_per_word; + u32 tmp; if (!spi->max_speed_hz) return -EINVAL; @@ -1535,48 +1826,13 @@ static int pl022_setup(struct spi_device *spi) chip_info = spi->controller_data; if (chip_info == NULL) { + chip_info = &pl022_default_chip_info; /* spi_board_info.controller_data not is supplied */ dev_dbg(&spi->dev, "using default controller_data settings\n"); - - chip_info = - kzalloc(sizeof(struct pl022_config_chip), GFP_KERNEL); - - if (!chip_info) { - dev_err(&spi->dev, - "cannot allocate controller data\n"); - status = -ENOMEM; - goto err_first_setup; - } - - dev_dbg(&spi->dev, "allocated memory for controller data\n"); - - /* Pointer back to the SPI device */ - chip_info->dev = &spi->dev; - /* - * Set controller data default values: - * Polling is supported by default - */ - chip_info->lbm = LOOPBACK_DISABLED; - chip_info->com_mode = POLLING_TRANSFER; - chip_info->iface = SSP_INTERFACE_MOTOROLA_SPI; - chip_info->hierarchy = SSP_SLAVE; - chip_info->slave_tx_disable = DO_NOT_DRIVE_TX; - chip_info->endian_tx = SSP_TX_LSB; - chip_info->endian_rx = SSP_RX_LSB; - chip_info->data_size = SSP_DATA_BITS_12; - chip_info->rx_lev_trig = SSP_RX_1_OR_MORE_ELEM; - chip_info->tx_lev_trig = SSP_TX_1_OR_MORE_EMPTY_LOC; - chip_info->clk_phase = SSP_CLK_SECOND_EDGE; - chip_info->clk_pol = SSP_CLK_POL_IDLE_LOW; - chip_info->ctrl_len = SSP_BITS_8; - chip_info->wait_state = SSP_MWIRE_WAIT_ZERO; - chip_info->duplex = SSP_MICROWIRE_CHANNEL_FULL_DUPLEX; - chip_info->cs_control = null_cs_control; - } else { + } else dev_dbg(&spi->dev, "using user supplied controller_data settings\n"); - } /* * We can override with custom divisors, else we use the board @@ -1586,29 +1842,48 @@ static int pl022_setup(struct spi_device *spi) && (0 == chip_info->clk_freq.scr)) { status = calculate_effective_freq(pl022, spi->max_speed_hz, - &chip_info->clk_freq); + &clk_freq); if (status < 0) goto err_config_params; } else { - if ((chip_info->clk_freq.cpsdvsr % 2) != 0) - chip_info->clk_freq.cpsdvsr = - chip_info->clk_freq.cpsdvsr - 1; + memcpy(&clk_freq, &chip_info->clk_freq, sizeof(clk_freq)); + if ((clk_freq.cpsdvsr % 2) != 0) + clk_freq.cpsdvsr = + clk_freq.cpsdvsr - 1; + } + if ((clk_freq.cpsdvsr < CPSDVR_MIN) + || (clk_freq.cpsdvsr > CPSDVR_MAX)) { + dev_err(&spi->dev, + "cpsdvsr is configured incorrectly\n"); + goto err_config_params; } + + status = verify_controller_parameters(pl022, chip_info); if (status) { dev_err(&spi->dev, "controller data is incorrect"); goto err_config_params; } + /* Now set controller state based on controller data */ chip->xfer_type = chip_info->com_mode; - chip->cs_control = chip_info->cs_control; - - if (chip_info->data_size <= 8) { - dev_dbg(&spi->dev, "1 <= n <=8 bits per word\n"); + if (!chip_info->cs_control) { + chip->cs_control = null_cs_control; + dev_warn(&spi->dev, + "chip select function is NULL for this chip\n"); + } else + chip->cs_control = chip_info->cs_control; + + if (bits <= 3) { + /* PL022 doesn't support less than 4-bits */ + status = -ENOTSUPP; + goto err_config_params; + } else if (bits <= 8) { + dev_dbg(&spi->dev, "4 <= n <=8 bits per word\n"); chip->n_bytes = 1; chip->read = READING_U8; chip->write = WRITING_U8; - } else if (chip_info->data_size <= 16) { + } else if (bits <= 16) { dev_dbg(&spi->dev, "9 <= n <= 16 bits per word\n"); chip->n_bytes = 2; chip->read = READING_U16; @@ -1625,6 +1900,7 @@ static int pl022_setup(struct spi_device *spi) dev_err(&spi->dev, "a standard pl022 can only handle " "1 <= n <= 16 bit words\n"); + status = -ENOTSUPP; goto err_config_params; } } @@ -1636,9 +1912,8 @@ static int pl022_setup(struct spi_device *spi) chip->cpsr = 0; if ((chip_info->com_mode == DMA_TRANSFER) && ((pl022->master_info)->enable_dma)) { - chip->enable_dma = 1; + chip->enable_dma = true; dev_dbg(&spi->dev, "DMA mode set in controller state\n"); - status = process_dma_info(chip_info, chip); if (status < 0) goto err_config_params; SSP_WRITE_BITS(chip->dmacr, SSP_DMA_ENABLED, @@ -1646,7 +1921,7 @@ static int pl022_setup(struct spi_device *spi) SSP_WRITE_BITS(chip->dmacr, SSP_DMA_ENABLED, SSP_DMACR_MASK_TXDMAE, 1); } else { - chip->enable_dma = 0; + chip->enable_dma = false; dev_dbg(&spi->dev, "DMA mode NOT set in controller state\n"); SSP_WRITE_BITS(chip->dmacr, SSP_DMA_DISABLED, SSP_DMACR_MASK_RXDMAE, 0); @@ -1654,10 +1929,12 @@ static int pl022_setup(struct spi_device *spi) SSP_DMACR_MASK_TXDMAE, 1); } - chip->cpsr = chip_info->clk_freq.cpsdvsr; + chip->cpsr = clk_freq.cpsdvsr; /* Special setup for the ST micro extended control registers */ if (pl022->vendor->extended_cr) { + u32 etx; + if (pl022->vendor->pl023) { /* These bits are only in the PL023 */ SSP_WRITE_BITS(chip->cr1, chip_info->clkdelay, @@ -1673,29 +1950,51 @@ static int pl022_setup(struct spi_device *spi) SSP_WRITE_BITS(chip->cr1, chip_info->wait_state, SSP_CR1_MASK_MWAIT_ST, 6); } - SSP_WRITE_BITS(chip->cr0, chip_info->data_size, + SSP_WRITE_BITS(chip->cr0, bits - 1, SSP_CR0_MASK_DSS_ST, 0); - SSP_WRITE_BITS(chip->cr1, chip_info->endian_rx, - SSP_CR1_MASK_RENDN_ST, 4); - SSP_WRITE_BITS(chip->cr1, chip_info->endian_tx, - SSP_CR1_MASK_TENDN_ST, 5); + + if (spi->mode & SPI_LSB_FIRST) { + tmp = SSP_RX_LSB; + etx = SSP_TX_LSB; + } else { + tmp = SSP_RX_MSB; + etx = SSP_TX_MSB; + } + SSP_WRITE_BITS(chip->cr1, tmp, SSP_CR1_MASK_RENDN_ST, 4); + SSP_WRITE_BITS(chip->cr1, etx, SSP_CR1_MASK_TENDN_ST, 5); SSP_WRITE_BITS(chip->cr1, chip_info->rx_lev_trig, SSP_CR1_MASK_RXIFLSEL_ST, 7); SSP_WRITE_BITS(chip->cr1, chip_info->tx_lev_trig, SSP_CR1_MASK_TXIFLSEL_ST, 10); } else { - SSP_WRITE_BITS(chip->cr0, chip_info->data_size, + SSP_WRITE_BITS(chip->cr0, bits - 1, SSP_CR0_MASK_DSS, 0); SSP_WRITE_BITS(chip->cr0, chip_info->iface, SSP_CR0_MASK_FRF, 4); } + /* Stuff that is common for all versions */ - SSP_WRITE_BITS(chip->cr0, chip_info->clk_pol, SSP_CR0_MASK_SPO, 6); - SSP_WRITE_BITS(chip->cr0, chip_info->clk_phase, SSP_CR0_MASK_SPH, 7); - SSP_WRITE_BITS(chip->cr0, chip_info->clk_freq.scr, SSP_CR0_MASK_SCR, 8); + if (spi->mode & SPI_CPOL) + tmp = SSP_CLK_POL_IDLE_HIGH; + else + tmp = SSP_CLK_POL_IDLE_LOW; + SSP_WRITE_BITS(chip->cr0, tmp, SSP_CR0_MASK_SPO, 6); + + if (spi->mode & SPI_CPHA) + tmp = SSP_CLK_SECOND_EDGE; + else + tmp = SSP_CLK_FIRST_EDGE; + SSP_WRITE_BITS(chip->cr0, tmp, SSP_CR0_MASK_SPH, 7); + + SSP_WRITE_BITS(chip->cr0, clk_freq.scr, SSP_CR0_MASK_SCR, 8); /* Loopback is available on all versions except PL023 */ - if (!pl022->vendor->pl023) - SSP_WRITE_BITS(chip->cr1, chip_info->lbm, SSP_CR1_MASK_LBM, 0); + if (!pl022->vendor->pl023) { + if (spi->mode & SPI_LOOP) + tmp = LOOPBACK_ENABLED; + else + tmp = LOOPBACK_DISABLED; + SSP_WRITE_BITS(chip->cr1, tmp, SSP_CR1_MASK_LBM, 0); + } SSP_WRITE_BITS(chip->cr1, SSP_DISABLED, SSP_CR1_MASK_SSE, 1); SSP_WRITE_BITS(chip->cr1, chip_info->hierarchy, SSP_CR1_MASK_MS, 2); SSP_WRITE_BITS(chip->cr1, chip_info->slave_tx_disable, SSP_CR1_MASK_SOD, 3); @@ -1704,7 +2003,7 @@ static int pl022_setup(struct spi_device *spi) spi_set_ctldata(spi, chip); return status; err_config_params: - err_first_setup: + spi_set_ctldata(spi, NULL); kfree(chip); return status; } @@ -1766,12 +2065,21 @@ pl022_probe(struct amba_device *adev, struct amba_id *id) master->setup = pl022_setup; master->transfer = pl022_transfer; + /* + * Supports mode 0-3, loopback, and active low CS. Transfers are + * always MS bit first on the original pl022. + */ + master->mode_bits = SPI_CPOL | SPI_CPHA | SPI_CS_HIGH | SPI_LOOP; + if (pl022->vendor->extended_cr) + master->mode_bits |= SPI_LSB_FIRST; + dev_dbg(&adev->dev, "BUSNO: %d\n", master->bus_num); status = amba_request_regions(adev, NULL); if (status) goto err_no_ioregion; + pl022->phybase = adev->res.start; pl022->virtbase = ioremap(adev->res.start, resource_size(&adev->res)); if (pl022->virtbase == NULL) { status = -ENOMEM; @@ -1798,6 +2106,14 @@ pl022_probe(struct amba_device *adev, struct amba_id *id) dev_err(&adev->dev, "probe - cannot get IRQ (%d)\n", status); goto err_no_irq; } + + /* Get DMA channels */ + if (platform_info->enable_dma) { + status = pl022_dma_probe(pl022); + if (status != 0) + goto err_no_dma; + } + /* Initialize and start queue */ status = init_queue(pl022); if (status != 0) { @@ -1826,6 +2142,8 @@ pl022_probe(struct amba_device *adev, struct amba_id *id) err_start_queue: err_init_queue: destroy_queue(pl022); + pl022_dma_remove(pl022); + err_no_dma: free_irq(adev->irq[0], pl022); err_no_irq: clk_put(pl022->clk); @@ -1856,6 +2174,7 @@ pl022_remove(struct amba_device *adev) return status; } load_ssp_default_config(pl022); + pl022_dma_remove(pl022); free_irq(adev->irq[0], pl022); clk_disable(pl022->clk); clk_put(pl022->clk); diff --git a/drivers/spi/atmel_spi.c b/drivers/spi/atmel_spi.c index c4e04428992d..154529aacc03 100644 --- a/drivers/spi/atmel_spi.c +++ b/drivers/spi/atmel_spi.c @@ -654,6 +654,8 @@ static int atmel_spi_transfer(struct spi_device *spi, struct spi_message *msg) struct spi_transfer *xfer; unsigned long flags; struct device *controller = spi->master->dev.parent; + u8 bits; + struct atmel_spi_device *asd; as = spi_master_get_devdata(spi->master); @@ -672,8 +674,18 @@ static int atmel_spi_transfer(struct spi_device *spi, struct spi_message *msg) return -EINVAL; } + if (xfer->bits_per_word) { + asd = spi->controller_state; + bits = (asd->csr >> 4) & 0xf; + if (bits != xfer->bits_per_word - 8) { + dev_dbg(&spi->dev, "you can't yet change " + "bits_per_word in transfers\n"); + return -ENOPROTOOPT; + } + } + /* FIXME implement these protocol options!! */ - if (xfer->bits_per_word || xfer->speed_hz) { + if (xfer->speed_hz) { dev_dbg(&spi->dev, "no protocol options yet\n"); return -ENOPROTOOPT; } diff --git a/drivers/spi/omap2_mcspi.c b/drivers/spi/omap2_mcspi.c index b3a94ca0a75a..2a651e61bfbf 100644 --- a/drivers/spi/omap2_mcspi.c +++ b/drivers/spi/omap2_mcspi.c @@ -296,6 +296,19 @@ static int omap2_mcspi_enable_clocks(struct omap2_mcspi *mcspi) return 0; } +static int mcspi_wait_for_reg_bit(void __iomem *reg, unsigned long bit) +{ + unsigned long timeout; + + timeout = jiffies + msecs_to_jiffies(1000); + while (!(__raw_readl(reg) & bit)) { + if (time_after(jiffies, timeout)) + return -1; + cpu_relax(); + } + return 0; +} + static unsigned omap2_mcspi_txrx_dma(struct spi_device *spi, struct spi_transfer *xfer) { @@ -309,11 +322,14 @@ omap2_mcspi_txrx_dma(struct spi_device *spi, struct spi_transfer *xfer) u32 l; u8 * rx; const u8 * tx; + void __iomem *chstat_reg; mcspi = spi_master_get_devdata(spi->master); mcspi_dma = &mcspi->dma_channels[spi->chip_select]; l = mcspi_cached_chconf0(spi); + chstat_reg = cs->base + OMAP2_MCSPI_CHSTAT0; + count = xfer->len; c = count; word_len = cs->word_len; @@ -382,6 +398,16 @@ omap2_mcspi_txrx_dma(struct spi_device *spi, struct spi_transfer *xfer) if (tx != NULL) { wait_for_completion(&mcspi_dma->dma_tx_completion); dma_unmap_single(NULL, xfer->tx_dma, count, DMA_TO_DEVICE); + + /* for TX_ONLY mode, be sure all words have shifted out */ + if (rx == NULL) { + if (mcspi_wait_for_reg_bit(chstat_reg, + OMAP2_MCSPI_CHSTAT_TXS) < 0) + dev_err(&spi->dev, "TXS timed out\n"); + else if (mcspi_wait_for_reg_bit(chstat_reg, + OMAP2_MCSPI_CHSTAT_EOT) < 0) + dev_err(&spi->dev, "EOT timed out\n"); + } } if (rx != NULL) { @@ -435,19 +461,6 @@ omap2_mcspi_txrx_dma(struct spi_device *spi, struct spi_transfer *xfer) return count; } -static int mcspi_wait_for_reg_bit(void __iomem *reg, unsigned long bit) -{ - unsigned long timeout; - - timeout = jiffies + msecs_to_jiffies(1000); - while (!(__raw_readl(reg) & bit)) { - if (time_after(jiffies, timeout)) - return -1; - cpu_relax(); - } - return 0; -} - static unsigned omap2_mcspi_txrx_pio(struct spi_device *spi, struct spi_transfer *xfer) { @@ -489,10 +502,8 @@ omap2_mcspi_txrx_pio(struct spi_device *spi, struct spi_transfer *xfer) dev_err(&spi->dev, "TXS timed out\n"); goto out; } -#ifdef VERBOSE - dev_dbg(&spi->dev, "write-%d %02x\n", + dev_vdbg(&spi->dev, "write-%d %02x\n", word_len, *tx); -#endif __raw_writel(*tx++, tx_reg); } if (rx != NULL) { @@ -506,10 +517,8 @@ omap2_mcspi_txrx_pio(struct spi_device *spi, struct spi_transfer *xfer) (l & OMAP2_MCSPI_CHCONF_TURBO)) { omap2_mcspi_set_enable(spi, 0); *rx++ = __raw_readl(rx_reg); -#ifdef VERBOSE - dev_dbg(&spi->dev, "read-%d %02x\n", + dev_vdbg(&spi->dev, "read-%d %02x\n", word_len, *(rx - 1)); -#endif if (mcspi_wait_for_reg_bit(chstat_reg, OMAP2_MCSPI_CHSTAT_RXS) < 0) { dev_err(&spi->dev, @@ -522,10 +531,8 @@ omap2_mcspi_txrx_pio(struct spi_device *spi, struct spi_transfer *xfer) } *rx++ = __raw_readl(rx_reg); -#ifdef VERBOSE - dev_dbg(&spi->dev, "read-%d %02x\n", + dev_vdbg(&spi->dev, "read-%d %02x\n", word_len, *(rx - 1)); -#endif } } while (c); } else if (word_len <= 16) { @@ -542,10 +549,8 @@ omap2_mcspi_txrx_pio(struct spi_device *spi, struct spi_transfer *xfer) dev_err(&spi->dev, "TXS timed out\n"); goto out; } -#ifdef VERBOSE - dev_dbg(&spi->dev, "write-%d %04x\n", + dev_vdbg(&spi->dev, "write-%d %04x\n", word_len, *tx); -#endif __raw_writel(*tx++, tx_reg); } if (rx != NULL) { @@ -559,10 +564,8 @@ omap2_mcspi_txrx_pio(struct spi_device *spi, struct spi_transfer *xfer) (l & OMAP2_MCSPI_CHCONF_TURBO)) { omap2_mcspi_set_enable(spi, 0); *rx++ = __raw_readl(rx_reg); -#ifdef VERBOSE - dev_dbg(&spi->dev, "read-%d %04x\n", + dev_vdbg(&spi->dev, "read-%d %04x\n", word_len, *(rx - 1)); -#endif if (mcspi_wait_for_reg_bit(chstat_reg, OMAP2_MCSPI_CHSTAT_RXS) < 0) { dev_err(&spi->dev, @@ -575,10 +578,8 @@ omap2_mcspi_txrx_pio(struct spi_device *spi, struct spi_transfer *xfer) } *rx++ = __raw_readl(rx_reg); -#ifdef VERBOSE - dev_dbg(&spi->dev, "read-%d %04x\n", + dev_vdbg(&spi->dev, "read-%d %04x\n", word_len, *(rx - 1)); -#endif } } while (c); } else if (word_len <= 32) { @@ -595,10 +596,8 @@ omap2_mcspi_txrx_pio(struct spi_device *spi, struct spi_transfer *xfer) dev_err(&spi->dev, "TXS timed out\n"); goto out; } -#ifdef VERBOSE - dev_dbg(&spi->dev, "write-%d %08x\n", + dev_vdbg(&spi->dev, "write-%d %08x\n", word_len, *tx); -#endif __raw_writel(*tx++, tx_reg); } if (rx != NULL) { @@ -612,10 +611,8 @@ omap2_mcspi_txrx_pio(struct spi_device *spi, struct spi_transfer *xfer) (l & OMAP2_MCSPI_CHCONF_TURBO)) { omap2_mcspi_set_enable(spi, 0); *rx++ = __raw_readl(rx_reg); -#ifdef VERBOSE - dev_dbg(&spi->dev, "read-%d %08x\n", + dev_vdbg(&spi->dev, "read-%d %08x\n", word_len, *(rx - 1)); -#endif if (mcspi_wait_for_reg_bit(chstat_reg, OMAP2_MCSPI_CHSTAT_RXS) < 0) { dev_err(&spi->dev, @@ -628,10 +625,8 @@ omap2_mcspi_txrx_pio(struct spi_device *spi, struct spi_transfer *xfer) } *rx++ = __raw_readl(rx_reg); -#ifdef VERBOSE - dev_dbg(&spi->dev, "read-%d %08x\n", + dev_vdbg(&spi->dev, "read-%d %08x\n", word_len, *(rx - 1)); -#endif } } while (c); } @@ -644,6 +639,12 @@ omap2_mcspi_txrx_pio(struct spi_device *spi, struct spi_transfer *xfer) } else if (mcspi_wait_for_reg_bit(chstat_reg, OMAP2_MCSPI_CHSTAT_EOT) < 0) dev_err(&spi->dev, "EOT timed out\n"); + + /* disable chan to purge rx datas received in TX_ONLY transfer, + * otherwise these rx datas will affect the direct following + * RX_ONLY transfer. + */ + omap2_mcspi_set_enable(spi, 0); } out: omap2_mcspi_set_enable(spi, 1); diff --git a/drivers/spi/orion_spi.c b/drivers/spi/orion_spi.c index 3aea50da7b29..0b677dc041ad 100644 --- a/drivers/spi/orion_spi.c +++ b/drivers/spi/orion_spi.c @@ -404,7 +404,7 @@ static int orion_spi_transfer(struct spi_device *spi, struct spi_message *m) goto msg_rejected; } - if ((t != NULL) && t->bits_per_word) + if (t->bits_per_word) bits_per_word = t->bits_per_word; if ((bits_per_word != 8) && (bits_per_word != 16)) { @@ -415,7 +415,7 @@ static int orion_spi_transfer(struct spi_device *spi, struct spi_message *m) goto msg_rejected; } /*make sure buffer length is even when working in 16 bit mode*/ - if ((t != NULL) && (t->bits_per_word == 16) && (t->len & 1)) { + if ((t->bits_per_word == 16) && (t->len & 1)) { dev_err(&spi->dev, "message rejected : " "odd data length (%d) while in 16 bit mode\n", diff --git a/drivers/spi/spi_bfin5xx.c b/drivers/spi/spi_bfin5xx.c index 10a6dc3d37ac..ab483a0ec6d0 100644 --- a/drivers/spi/spi_bfin5xx.c +++ b/drivers/spi/spi_bfin5xx.c @@ -1,7 +1,7 @@ /* * Blackfin On-Chip SPI Driver * - * Copyright 2004-2007 Analog Devices Inc. + * Copyright 2004-2010 Analog Devices Inc. * * Enter bugs at http://blackfin.uclinux.org/ * @@ -41,13 +41,16 @@ MODULE_LICENSE("GPL"); #define RUNNING_STATE ((void *)1) #define DONE_STATE ((void *)2) #define ERROR_STATE ((void *)-1) -#define QUEUE_RUNNING 0 -#define QUEUE_STOPPED 1 -/* Value to send if no TX value is supplied */ -#define SPI_IDLE_TXVAL 0x0000 +struct bfin_spi_master_data; -struct driver_data { +struct bfin_spi_transfer_ops { + void (*write) (struct bfin_spi_master_data *); + void (*read) (struct bfin_spi_master_data *); + void (*duplex) (struct bfin_spi_master_data *); +}; + +struct bfin_spi_master_data { /* Driver model hookup */ struct platform_device *pdev; @@ -69,7 +72,7 @@ struct driver_data { spinlock_t lock; struct list_head queue; int busy; - int run; + bool running; /* Message Transfer pump */ struct tasklet_struct pump_transfers; @@ -77,7 +80,7 @@ struct driver_data { /* Current message transfer state info */ struct spi_message *cur_msg; struct spi_transfer *cur_transfer; - struct chip_data *cur_chip; + struct bfin_spi_slave_data *cur_chip; size_t len_in_bytes; size_t len; void *tx; @@ -92,38 +95,37 @@ struct driver_data { dma_addr_t rx_dma; dma_addr_t tx_dma; + int irq_requested; + int spi_irq; + size_t rx_map_len; size_t tx_map_len; u8 n_bytes; + u16 ctrl_reg; + u16 flag_reg; + int cs_change; - void (*write) (struct driver_data *); - void (*read) (struct driver_data *); - void (*duplex) (struct driver_data *); + const struct bfin_spi_transfer_ops *ops; }; -struct chip_data { +struct bfin_spi_slave_data { u16 ctl_reg; u16 baud; u16 flag; u8 chip_select_num; - u8 n_bytes; - u8 width; /* 0 or 1 */ u8 enable_dma; - u8 bits_per_word; /* 8 or 16 */ - u8 cs_change_per_word; u16 cs_chg_udelay; /* Some devices require > 255usec delay */ u32 cs_gpio; u16 idle_tx_val; - void (*write) (struct driver_data *); - void (*read) (struct driver_data *); - void (*duplex) (struct driver_data *); + u8 pio_interrupt; /* use spi data irq */ + const struct bfin_spi_transfer_ops *ops; }; #define DEFINE_SPI_REG(reg, off) \ -static inline u16 read_##reg(struct driver_data *drv_data) \ +static inline u16 read_##reg(struct bfin_spi_master_data *drv_data) \ { return bfin_read16(drv_data->regs_base + off); } \ -static inline void write_##reg(struct driver_data *drv_data, u16 v) \ +static inline void write_##reg(struct bfin_spi_master_data *drv_data, u16 v) \ { bfin_write16(drv_data->regs_base + off, v); } DEFINE_SPI_REG(CTRL, 0x00) @@ -134,7 +136,7 @@ DEFINE_SPI_REG(RDBR, 0x10) DEFINE_SPI_REG(BAUD, 0x14) DEFINE_SPI_REG(SHAW, 0x18) -static void bfin_spi_enable(struct driver_data *drv_data) +static void bfin_spi_enable(struct bfin_spi_master_data *drv_data) { u16 cr; @@ -142,7 +144,7 @@ static void bfin_spi_enable(struct driver_data *drv_data) write_CTRL(drv_data, (cr | BIT_CTL_ENABLE)); } -static void bfin_spi_disable(struct driver_data *drv_data) +static void bfin_spi_disable(struct bfin_spi_master_data *drv_data) { u16 cr; @@ -165,7 +167,7 @@ static u16 hz_to_spi_baud(u32 speed_hz) return spi_baud; } -static int bfin_spi_flush(struct driver_data *drv_data) +static int bfin_spi_flush(struct bfin_spi_master_data *drv_data) { unsigned long limit = loops_per_jiffy << 1; @@ -179,13 +181,12 @@ static int bfin_spi_flush(struct driver_data *drv_data) } /* Chip select operation functions for cs_change flag */ -static void bfin_spi_cs_active(struct driver_data *drv_data, struct chip_data *chip) +static void bfin_spi_cs_active(struct bfin_spi_master_data *drv_data, struct bfin_spi_slave_data *chip) { - if (likely(chip->chip_select_num)) { + if (likely(chip->chip_select_num < MAX_CTRL_CS)) { u16 flag = read_FLAG(drv_data); - flag |= chip->flag; - flag &= ~(chip->flag << 8); + flag &= ~chip->flag; write_FLAG(drv_data, flag); } else { @@ -193,13 +194,13 @@ static void bfin_spi_cs_active(struct driver_data *drv_data, struct chip_data *c } } -static void bfin_spi_cs_deactive(struct driver_data *drv_data, struct chip_data *chip) +static void bfin_spi_cs_deactive(struct bfin_spi_master_data *drv_data, + struct bfin_spi_slave_data *chip) { - if (likely(chip->chip_select_num)) { + if (likely(chip->chip_select_num < MAX_CTRL_CS)) { u16 flag = read_FLAG(drv_data); - flag &= ~chip->flag; - flag |= (chip->flag << 8); + flag |= chip->flag; write_FLAG(drv_data, flag); } else { @@ -211,16 +212,43 @@ static void bfin_spi_cs_deactive(struct driver_data *drv_data, struct chip_data udelay(chip->cs_chg_udelay); } +/* enable or disable the pin muxed by GPIO and SPI CS to work as SPI CS */ +static inline void bfin_spi_cs_enable(struct bfin_spi_master_data *drv_data, + struct bfin_spi_slave_data *chip) +{ + if (chip->chip_select_num < MAX_CTRL_CS) { + u16 flag = read_FLAG(drv_data); + + flag |= (chip->flag >> 8); + + write_FLAG(drv_data, flag); + } +} + +static inline void bfin_spi_cs_disable(struct bfin_spi_master_data *drv_data, + struct bfin_spi_slave_data *chip) +{ + if (chip->chip_select_num < MAX_CTRL_CS) { + u16 flag = read_FLAG(drv_data); + + flag &= ~(chip->flag >> 8); + + write_FLAG(drv_data, flag); + } +} + /* stop controller and re-config current chip*/ -static void bfin_spi_restore_state(struct driver_data *drv_data) +static void bfin_spi_restore_state(struct bfin_spi_master_data *drv_data) { - struct chip_data *chip = drv_data->cur_chip; + struct bfin_spi_slave_data *chip = drv_data->cur_chip; /* Clear status and disable clock */ write_STAT(drv_data, BIT_STAT_CLR); bfin_spi_disable(drv_data); dev_dbg(&drv_data->pdev->dev, "restoring spi ctl state\n"); + SSYNC(); + /* Load the registers */ write_CTRL(drv_data, chip->ctl_reg); write_BAUD(drv_data, chip->baud); @@ -230,49 +258,12 @@ static void bfin_spi_restore_state(struct driver_data *drv_data) } /* used to kick off transfer in rx mode and read unwanted RX data */ -static inline void bfin_spi_dummy_read(struct driver_data *drv_data) +static inline void bfin_spi_dummy_read(struct bfin_spi_master_data *drv_data) { (void) read_RDBR(drv_data); } -static void bfin_spi_null_writer(struct driver_data *drv_data) -{ - u8 n_bytes = drv_data->n_bytes; - u16 tx_val = drv_data->cur_chip->idle_tx_val; - - /* clear RXS (we check for RXS inside the loop) */ - bfin_spi_dummy_read(drv_data); - - while (drv_data->tx < drv_data->tx_end) { - write_TDBR(drv_data, tx_val); - drv_data->tx += n_bytes; - /* wait until transfer finished. - checking SPIF or TXS may not guarantee transfer completion */ - while (!(read_STAT(drv_data) & BIT_STAT_RXS)) - cpu_relax(); - /* discard RX data and clear RXS */ - bfin_spi_dummy_read(drv_data); - } -} - -static void bfin_spi_null_reader(struct driver_data *drv_data) -{ - u8 n_bytes = drv_data->n_bytes; - u16 tx_val = drv_data->cur_chip->idle_tx_val; - - /* discard old RX data and clear RXS */ - bfin_spi_dummy_read(drv_data); - - while (drv_data->rx < drv_data->rx_end) { - write_TDBR(drv_data, tx_val); - drv_data->rx += n_bytes; - while (!(read_STAT(drv_data) & BIT_STAT_RXS)) - cpu_relax(); - bfin_spi_dummy_read(drv_data); - } -} - -static void bfin_spi_u8_writer(struct driver_data *drv_data) +static void bfin_spi_u8_writer(struct bfin_spi_master_data *drv_data) { /* clear RXS (we check for RXS inside the loop) */ bfin_spi_dummy_read(drv_data); @@ -288,25 +279,7 @@ static void bfin_spi_u8_writer(struct driver_data *drv_data) } } -static void bfin_spi_u8_cs_chg_writer(struct driver_data *drv_data) -{ - struct chip_data *chip = drv_data->cur_chip; - - /* clear RXS (we check for RXS inside the loop) */ - bfin_spi_dummy_read(drv_data); - - while (drv_data->tx < drv_data->tx_end) { - bfin_spi_cs_active(drv_data, chip); - write_TDBR(drv_data, (*(u8 *) (drv_data->tx++))); - /* make sure transfer finished before deactiving CS */ - while (!(read_STAT(drv_data) & BIT_STAT_RXS)) - cpu_relax(); - bfin_spi_dummy_read(drv_data); - bfin_spi_cs_deactive(drv_data, chip); - } -} - -static void bfin_spi_u8_reader(struct driver_data *drv_data) +static void bfin_spi_u8_reader(struct bfin_spi_master_data *drv_data) { u16 tx_val = drv_data->cur_chip->idle_tx_val; @@ -321,25 +294,7 @@ static void bfin_spi_u8_reader(struct driver_data *drv_data) } } -static void bfin_spi_u8_cs_chg_reader(struct driver_data *drv_data) -{ - struct chip_data *chip = drv_data->cur_chip; - u16 tx_val = chip->idle_tx_val; - - /* discard old RX data and clear RXS */ - bfin_spi_dummy_read(drv_data); - - while (drv_data->rx < drv_data->rx_end) { - bfin_spi_cs_active(drv_data, chip); - write_TDBR(drv_data, tx_val); - while (!(read_STAT(drv_data) & BIT_STAT_RXS)) - cpu_relax(); - *(u8 *) (drv_data->rx++) = read_RDBR(drv_data); - bfin_spi_cs_deactive(drv_data, chip); - } -} - -static void bfin_spi_u8_duplex(struct driver_data *drv_data) +static void bfin_spi_u8_duplex(struct bfin_spi_master_data *drv_data) { /* discard old RX data and clear RXS */ bfin_spi_dummy_read(drv_data); @@ -352,24 +307,13 @@ static void bfin_spi_u8_duplex(struct driver_data *drv_data) } } -static void bfin_spi_u8_cs_chg_duplex(struct driver_data *drv_data) -{ - struct chip_data *chip = drv_data->cur_chip; - - /* discard old RX data and clear RXS */ - bfin_spi_dummy_read(drv_data); - - while (drv_data->rx < drv_data->rx_end) { - bfin_spi_cs_active(drv_data, chip); - write_TDBR(drv_data, (*(u8 *) (drv_data->tx++))); - while (!(read_STAT(drv_data) & BIT_STAT_RXS)) - cpu_relax(); - *(u8 *) (drv_data->rx++) = read_RDBR(drv_data); - bfin_spi_cs_deactive(drv_data, chip); - } -} +static const struct bfin_spi_transfer_ops bfin_bfin_spi_transfer_ops_u8 = { + .write = bfin_spi_u8_writer, + .read = bfin_spi_u8_reader, + .duplex = bfin_spi_u8_duplex, +}; -static void bfin_spi_u16_writer(struct driver_data *drv_data) +static void bfin_spi_u16_writer(struct bfin_spi_master_data *drv_data) { /* clear RXS (we check for RXS inside the loop) */ bfin_spi_dummy_read(drv_data); @@ -386,26 +330,7 @@ static void bfin_spi_u16_writer(struct driver_data *drv_data) } } -static void bfin_spi_u16_cs_chg_writer(struct driver_data *drv_data) -{ - struct chip_data *chip = drv_data->cur_chip; - - /* clear RXS (we check for RXS inside the loop) */ - bfin_spi_dummy_read(drv_data); - - while (drv_data->tx < drv_data->tx_end) { - bfin_spi_cs_active(drv_data, chip); - write_TDBR(drv_data, (*(u16 *) (drv_data->tx))); - drv_data->tx += 2; - /* make sure transfer finished before deactiving CS */ - while (!(read_STAT(drv_data) & BIT_STAT_RXS)) - cpu_relax(); - bfin_spi_dummy_read(drv_data); - bfin_spi_cs_deactive(drv_data, chip); - } -} - -static void bfin_spi_u16_reader(struct driver_data *drv_data) +static void bfin_spi_u16_reader(struct bfin_spi_master_data *drv_data) { u16 tx_val = drv_data->cur_chip->idle_tx_val; @@ -421,26 +346,7 @@ static void bfin_spi_u16_reader(struct driver_data *drv_data) } } -static void bfin_spi_u16_cs_chg_reader(struct driver_data *drv_data) -{ - struct chip_data *chip = drv_data->cur_chip; - u16 tx_val = chip->idle_tx_val; - - /* discard old RX data and clear RXS */ - bfin_spi_dummy_read(drv_data); - - while (drv_data->rx < drv_data->rx_end) { - bfin_spi_cs_active(drv_data, chip); - write_TDBR(drv_data, tx_val); - while (!(read_STAT(drv_data) & BIT_STAT_RXS)) - cpu_relax(); - *(u16 *) (drv_data->rx) = read_RDBR(drv_data); - drv_data->rx += 2; - bfin_spi_cs_deactive(drv_data, chip); - } -} - -static void bfin_spi_u16_duplex(struct driver_data *drv_data) +static void bfin_spi_u16_duplex(struct bfin_spi_master_data *drv_data) { /* discard old RX data and clear RXS */ bfin_spi_dummy_read(drv_data); @@ -455,27 +361,14 @@ static void bfin_spi_u16_duplex(struct driver_data *drv_data) } } -static void bfin_spi_u16_cs_chg_duplex(struct driver_data *drv_data) -{ - struct chip_data *chip = drv_data->cur_chip; - - /* discard old RX data and clear RXS */ - bfin_spi_dummy_read(drv_data); - - while (drv_data->rx < drv_data->rx_end) { - bfin_spi_cs_active(drv_data, chip); - write_TDBR(drv_data, (*(u16 *) (drv_data->tx))); - drv_data->tx += 2; - while (!(read_STAT(drv_data) & BIT_STAT_RXS)) - cpu_relax(); - *(u16 *) (drv_data->rx) = read_RDBR(drv_data); - drv_data->rx += 2; - bfin_spi_cs_deactive(drv_data, chip); - } -} +static const struct bfin_spi_transfer_ops bfin_bfin_spi_transfer_ops_u16 = { + .write = bfin_spi_u16_writer, + .read = bfin_spi_u16_reader, + .duplex = bfin_spi_u16_duplex, +}; -/* test if ther is more transfer to be done */ -static void *bfin_spi_next_transfer(struct driver_data *drv_data) +/* test if there is more transfer to be done */ +static void *bfin_spi_next_transfer(struct bfin_spi_master_data *drv_data) { struct spi_message *msg = drv_data->cur_msg; struct spi_transfer *trans = drv_data->cur_transfer; @@ -494,9 +387,9 @@ static void *bfin_spi_next_transfer(struct driver_data *drv_data) * caller already set message->status; * dma and pio irqs are blocked give finished message back */ -static void bfin_spi_giveback(struct driver_data *drv_data) +static void bfin_spi_giveback(struct bfin_spi_master_data *drv_data) { - struct chip_data *chip = drv_data->cur_chip; + struct bfin_spi_slave_data *chip = drv_data->cur_chip; struct spi_transfer *last_transfer; unsigned long flags; struct spi_message *msg; @@ -525,10 +418,83 @@ static void bfin_spi_giveback(struct driver_data *drv_data) msg->complete(msg->context); } +/* spi data irq handler */ +static irqreturn_t bfin_spi_pio_irq_handler(int irq, void *dev_id) +{ + struct bfin_spi_master_data *drv_data = dev_id; + struct bfin_spi_slave_data *chip = drv_data->cur_chip; + struct spi_message *msg = drv_data->cur_msg; + int n_bytes = drv_data->n_bytes; + + /* wait until transfer finished. */ + while (!(read_STAT(drv_data) & BIT_STAT_RXS)) + cpu_relax(); + + if ((drv_data->tx && drv_data->tx >= drv_data->tx_end) || + (drv_data->rx && drv_data->rx >= (drv_data->rx_end - n_bytes))) { + /* last read */ + if (drv_data->rx) { + dev_dbg(&drv_data->pdev->dev, "last read\n"); + if (n_bytes == 2) + *(u16 *) (drv_data->rx) = read_RDBR(drv_data); + else if (n_bytes == 1) + *(u8 *) (drv_data->rx) = read_RDBR(drv_data); + drv_data->rx += n_bytes; + } + + msg->actual_length += drv_data->len_in_bytes; + if (drv_data->cs_change) + bfin_spi_cs_deactive(drv_data, chip); + /* Move to next transfer */ + msg->state = bfin_spi_next_transfer(drv_data); + + disable_irq_nosync(drv_data->spi_irq); + + /* Schedule transfer tasklet */ + tasklet_schedule(&drv_data->pump_transfers); + return IRQ_HANDLED; + } + + if (drv_data->rx && drv_data->tx) { + /* duplex */ + dev_dbg(&drv_data->pdev->dev, "duplex: write_TDBR\n"); + if (drv_data->n_bytes == 2) { + *(u16 *) (drv_data->rx) = read_RDBR(drv_data); + write_TDBR(drv_data, (*(u16 *) (drv_data->tx))); + } else if (drv_data->n_bytes == 1) { + *(u8 *) (drv_data->rx) = read_RDBR(drv_data); + write_TDBR(drv_data, (*(u8 *) (drv_data->tx))); + } + } else if (drv_data->rx) { + /* read */ + dev_dbg(&drv_data->pdev->dev, "read: write_TDBR\n"); + if (drv_data->n_bytes == 2) + *(u16 *) (drv_data->rx) = read_RDBR(drv_data); + else if (drv_data->n_bytes == 1) + *(u8 *) (drv_data->rx) = read_RDBR(drv_data); + write_TDBR(drv_data, chip->idle_tx_val); + } else if (drv_data->tx) { + /* write */ + dev_dbg(&drv_data->pdev->dev, "write: write_TDBR\n"); + bfin_spi_dummy_read(drv_data); + if (drv_data->n_bytes == 2) + write_TDBR(drv_data, (*(u16 *) (drv_data->tx))); + else if (drv_data->n_bytes == 1) + write_TDBR(drv_data, (*(u8 *) (drv_data->tx))); + } + + if (drv_data->tx) + drv_data->tx += n_bytes; + if (drv_data->rx) + drv_data->rx += n_bytes; + + return IRQ_HANDLED; +} + static irqreturn_t bfin_spi_dma_irq_handler(int irq, void *dev_id) { - struct driver_data *drv_data = dev_id; - struct chip_data *chip = drv_data->cur_chip; + struct bfin_spi_master_data *drv_data = dev_id; + struct bfin_spi_slave_data *chip = drv_data->cur_chip; struct spi_message *msg = drv_data->cur_msg; unsigned long timeout; unsigned short dmastat = get_dma_curr_irqstat(drv_data->dma_channel); @@ -540,10 +506,6 @@ static irqreturn_t bfin_spi_dma_irq_handler(int irq, void *dev_id) clear_dma_irqstat(drv_data->dma_channel); - /* Wait for DMA to complete */ - while (get_dma_curr_irqstat(drv_data->dma_channel) & DMA_RUN) - cpu_relax(); - /* * wait for the last transaction shifted out. HRM states: * at this point there may still be data in the SPI DMA FIFO waiting @@ -551,8 +513,8 @@ static irqreturn_t bfin_spi_dma_irq_handler(int irq, void *dev_id) * register until it goes low for 2 successive reads */ if (drv_data->tx != NULL) { - while ((read_STAT(drv_data) & TXS) || - (read_STAT(drv_data) & TXS)) + while ((read_STAT(drv_data) & BIT_STAT_TXS) || + (read_STAT(drv_data) & BIT_STAT_TXS)) cpu_relax(); } @@ -561,14 +523,14 @@ static irqreturn_t bfin_spi_dma_irq_handler(int irq, void *dev_id) dmastat, read_STAT(drv_data)); timeout = jiffies + HZ; - while (!(read_STAT(drv_data) & SPIF)) + while (!(read_STAT(drv_data) & BIT_STAT_SPIF)) if (!time_before(jiffies, timeout)) { dev_warn(&drv_data->pdev->dev, "timeout waiting for SPIF"); break; } else cpu_relax(); - if ((dmastat & DMA_ERR) && (spistat & RBSY)) { + if ((dmastat & DMA_ERR) && (spistat & BIT_STAT_RBSY)) { msg->state = ERROR_STATE; dev_err(&drv_data->pdev->dev, "dma receive: fifo/buffer overflow\n"); } else { @@ -588,20 +550,20 @@ static irqreturn_t bfin_spi_dma_irq_handler(int irq, void *dev_id) dev_dbg(&drv_data->pdev->dev, "disable dma channel irq%d\n", drv_data->dma_channel); - dma_disable_irq(drv_data->dma_channel); + dma_disable_irq_nosync(drv_data->dma_channel); return IRQ_HANDLED; } static void bfin_spi_pump_transfers(unsigned long data) { - struct driver_data *drv_data = (struct driver_data *)data; + struct bfin_spi_master_data *drv_data = (struct bfin_spi_master_data *)data; struct spi_message *message = NULL; struct spi_transfer *transfer = NULL; struct spi_transfer *previous = NULL; - struct chip_data *chip = NULL; - u8 width; - u16 cr, dma_width, dma_config; + struct bfin_spi_slave_data *chip = NULL; + unsigned int bits_per_word; + u16 cr, cr_width, dma_width, dma_config; u32 tranf_success = 1; u8 full_duplex = 0; @@ -639,7 +601,7 @@ static void bfin_spi_pump_transfers(unsigned long data) udelay(previous->delay_usecs); } - /* Setup the transfer state based on the type of transfer */ + /* Flush any existing transfers that may be sitting in the hardware */ if (bfin_spi_flush(drv_data) == 0) { dev_err(&drv_data->pdev->dev, "pump_transfers: flush failed\n"); message->status = -EIO; @@ -679,52 +641,31 @@ static void bfin_spi_pump_transfers(unsigned long data) drv_data->cs_change = transfer->cs_change; /* Bits per word setup */ - switch (transfer->bits_per_word) { - case 8: + bits_per_word = transfer->bits_per_word ? : message->spi->bits_per_word; + if (bits_per_word == 8) { drv_data->n_bytes = 1; - width = CFG_SPI_WORDSIZE8; - drv_data->read = chip->cs_change_per_word ? - bfin_spi_u8_cs_chg_reader : bfin_spi_u8_reader; - drv_data->write = chip->cs_change_per_word ? - bfin_spi_u8_cs_chg_writer : bfin_spi_u8_writer; - drv_data->duplex = chip->cs_change_per_word ? - bfin_spi_u8_cs_chg_duplex : bfin_spi_u8_duplex; - break; - - case 16: + drv_data->len = transfer->len; + cr_width = 0; + drv_data->ops = &bfin_bfin_spi_transfer_ops_u8; + } else if (bits_per_word == 16) { drv_data->n_bytes = 2; - width = CFG_SPI_WORDSIZE16; - drv_data->read = chip->cs_change_per_word ? - bfin_spi_u16_cs_chg_reader : bfin_spi_u16_reader; - drv_data->write = chip->cs_change_per_word ? - bfin_spi_u16_cs_chg_writer : bfin_spi_u16_writer; - drv_data->duplex = chip->cs_change_per_word ? - bfin_spi_u16_cs_chg_duplex : bfin_spi_u16_duplex; - break; - - default: - /* No change, the same as default setting */ - drv_data->n_bytes = chip->n_bytes; - width = chip->width; - drv_data->write = drv_data->tx ? chip->write : bfin_spi_null_writer; - drv_data->read = drv_data->rx ? chip->read : bfin_spi_null_reader; - drv_data->duplex = chip->duplex ? chip->duplex : bfin_spi_null_writer; - break; - } - cr = (read_CTRL(drv_data) & (~BIT_CTL_TIMOD)); - cr |= (width << 8); - write_CTRL(drv_data, cr); - - if (width == CFG_SPI_WORDSIZE16) { drv_data->len = (transfer->len) >> 1; + cr_width = BIT_CTL_WORDSIZE; + drv_data->ops = &bfin_bfin_spi_transfer_ops_u16; } else { - drv_data->len = transfer->len; + dev_err(&drv_data->pdev->dev, "transfer: unsupported bits_per_word\n"); + message->status = -EINVAL; + bfin_spi_giveback(drv_data); + return; } + cr = read_CTRL(drv_data) & ~(BIT_CTL_TIMOD | BIT_CTL_WORDSIZE); + cr |= cr_width; + write_CTRL(drv_data, cr); + dev_dbg(&drv_data->pdev->dev, - "transfer: drv_data->write is %p, chip->write is %p, null_wr is %p\n", - drv_data->write, chip->write, bfin_spi_null_writer); + "transfer: drv_data->ops is %p, chip->ops is %p, u8_ops is %p\n", + drv_data->ops, chip->ops, &bfin_bfin_spi_transfer_ops_u8); - /* speed and width has been set on per message */ message->state = RUNNING_STATE; dma_config = 0; @@ -735,13 +676,11 @@ static void bfin_spi_pump_transfers(unsigned long data) write_BAUD(drv_data, chip->baud); write_STAT(drv_data, BIT_STAT_CLR); - cr = (read_CTRL(drv_data) & (~BIT_CTL_TIMOD)); - if (drv_data->cs_change) - bfin_spi_cs_active(drv_data, chip); + bfin_spi_cs_active(drv_data, chip); dev_dbg(&drv_data->pdev->dev, "now pumping a transfer: width is %d, len is %d\n", - width, transfer->len); + cr_width, transfer->len); /* * Try to map dma buffer and do a dma transfer. If successful use, @@ -760,7 +699,7 @@ static void bfin_spi_pump_transfers(unsigned long data) /* config dma channel */ dev_dbg(&drv_data->pdev->dev, "doing dma transfer\n"); set_dma_x_count(drv_data->dma_channel, drv_data->len); - if (width == CFG_SPI_WORDSIZE16) { + if (cr_width == BIT_CTL_WORDSIZE) { set_dma_x_modify(drv_data->dma_channel, 2); dma_width = WDSIZE_16; } else { @@ -846,73 +785,100 @@ static void bfin_spi_pump_transfers(unsigned long data) dma_enable_irq(drv_data->dma_channel); local_irq_restore(flags); - } else { - /* IO mode write then read */ - dev_dbg(&drv_data->pdev->dev, "doing IO transfer\n"); - - /* we always use SPI_WRITE mode. SPI_READ mode - seems to have problems with setting up the - output value in TDBR prior to the transfer. */ - write_CTRL(drv_data, (cr | CFG_SPI_WRITE)); - - if (full_duplex) { - /* full duplex mode */ - BUG_ON((drv_data->tx_end - drv_data->tx) != - (drv_data->rx_end - drv_data->rx)); - dev_dbg(&drv_data->pdev->dev, - "IO duplex: cr is 0x%x\n", cr); - - drv_data->duplex(drv_data); + return; + } - if (drv_data->tx != drv_data->tx_end) - tranf_success = 0; - } else if (drv_data->tx != NULL) { - /* write only half duplex */ - dev_dbg(&drv_data->pdev->dev, - "IO write: cr is 0x%x\n", cr); + /* + * We always use SPI_WRITE mode (transfer starts with TDBR write). + * SPI_READ mode (transfer starts with RDBR read) seems to have + * problems with setting up the output value in TDBR prior to the + * start of the transfer. + */ + write_CTRL(drv_data, cr | BIT_CTL_TXMOD); - drv_data->write(drv_data); + if (chip->pio_interrupt) { + /* SPI irq should have been disabled by now */ - if (drv_data->tx != drv_data->tx_end) - tranf_success = 0; - } else if (drv_data->rx != NULL) { - /* read only half duplex */ - dev_dbg(&drv_data->pdev->dev, - "IO read: cr is 0x%x\n", cr); + /* discard old RX data and clear RXS */ + bfin_spi_dummy_read(drv_data); - drv_data->read(drv_data); - if (drv_data->rx != drv_data->rx_end) - tranf_success = 0; + /* start transfer */ + if (drv_data->tx == NULL) + write_TDBR(drv_data, chip->idle_tx_val); + else { + if (bits_per_word == 8) + write_TDBR(drv_data, (*(u8 *) (drv_data->tx))); + else + write_TDBR(drv_data, (*(u16 *) (drv_data->tx))); + drv_data->tx += drv_data->n_bytes; } - if (!tranf_success) { - dev_dbg(&drv_data->pdev->dev, - "IO write error!\n"); - message->state = ERROR_STATE; - } else { - /* Update total byte transfered */ - message->actual_length += drv_data->len_in_bytes; - /* Move to next transfer of this msg */ - message->state = bfin_spi_next_transfer(drv_data); - if (drv_data->cs_change) - bfin_spi_cs_deactive(drv_data, chip); - } - /* Schedule next transfer tasklet */ - tasklet_schedule(&drv_data->pump_transfers); + /* once TDBR is empty, interrupt is triggered */ + enable_irq(drv_data->spi_irq); + return; + } + + /* IO mode */ + dev_dbg(&drv_data->pdev->dev, "doing IO transfer\n"); + + if (full_duplex) { + /* full duplex mode */ + BUG_ON((drv_data->tx_end - drv_data->tx) != + (drv_data->rx_end - drv_data->rx)); + dev_dbg(&drv_data->pdev->dev, + "IO duplex: cr is 0x%x\n", cr); + + drv_data->ops->duplex(drv_data); + + if (drv_data->tx != drv_data->tx_end) + tranf_success = 0; + } else if (drv_data->tx != NULL) { + /* write only half duplex */ + dev_dbg(&drv_data->pdev->dev, + "IO write: cr is 0x%x\n", cr); + + drv_data->ops->write(drv_data); + + if (drv_data->tx != drv_data->tx_end) + tranf_success = 0; + } else if (drv_data->rx != NULL) { + /* read only half duplex */ + dev_dbg(&drv_data->pdev->dev, + "IO read: cr is 0x%x\n", cr); + + drv_data->ops->read(drv_data); + if (drv_data->rx != drv_data->rx_end) + tranf_success = 0; + } + + if (!tranf_success) { + dev_dbg(&drv_data->pdev->dev, + "IO write error!\n"); + message->state = ERROR_STATE; + } else { + /* Update total byte transfered */ + message->actual_length += drv_data->len_in_bytes; + /* Move to next transfer of this msg */ + message->state = bfin_spi_next_transfer(drv_data); + if (drv_data->cs_change) + bfin_spi_cs_deactive(drv_data, chip); } + + /* Schedule next transfer tasklet */ + tasklet_schedule(&drv_data->pump_transfers); } /* pop a msg from queue and kick off real transfer */ static void bfin_spi_pump_messages(struct work_struct *work) { - struct driver_data *drv_data; + struct bfin_spi_master_data *drv_data; unsigned long flags; - drv_data = container_of(work, struct driver_data, pump_messages); + drv_data = container_of(work, struct bfin_spi_master_data, pump_messages); /* Lock queue and check for queue work */ spin_lock_irqsave(&drv_data->lock, flags); - if (list_empty(&drv_data->queue) || drv_data->run == QUEUE_STOPPED) { + if (list_empty(&drv_data->queue) || !drv_data->running) { /* pumper kicked off but no work to do */ drv_data->busy = 0; spin_unlock_irqrestore(&drv_data->lock, flags); @@ -962,12 +928,12 @@ static void bfin_spi_pump_messages(struct work_struct *work) */ static int bfin_spi_transfer(struct spi_device *spi, struct spi_message *msg) { - struct driver_data *drv_data = spi_master_get_devdata(spi->master); + struct bfin_spi_master_data *drv_data = spi_master_get_devdata(spi->master); unsigned long flags; spin_lock_irqsave(&drv_data->lock, flags); - if (drv_data->run == QUEUE_STOPPED) { + if (!drv_data->running) { spin_unlock_irqrestore(&drv_data->lock, flags); return -ESHUTDOWN; } @@ -979,7 +945,7 @@ static int bfin_spi_transfer(struct spi_device *spi, struct spi_message *msg) dev_dbg(&spi->dev, "adding an msg in transfer() \n"); list_add_tail(&msg->queue, &drv_data->queue); - if (drv_data->run == QUEUE_RUNNING && !drv_data->busy) + if (drv_data->running && !drv_data->busy) queue_work(drv_data->workqueue, &drv_data->pump_messages); spin_unlock_irqrestore(&drv_data->lock, flags); @@ -1003,147 +969,184 @@ static u16 ssel[][MAX_SPI_SSEL] = { P_SPI2_SSEL6, P_SPI2_SSEL7}, }; -/* first setup for new devices */ +/* setup for devices (may be called multiple times -- not just first setup) */ static int bfin_spi_setup(struct spi_device *spi) { - struct bfin5xx_spi_chip *chip_info = NULL; - struct chip_data *chip; - struct driver_data *drv_data = spi_master_get_devdata(spi->master); - int ret; - - if (spi->bits_per_word != 8 && spi->bits_per_word != 16) - return -EINVAL; + struct bfin5xx_spi_chip *chip_info; + struct bfin_spi_slave_data *chip = NULL; + struct bfin_spi_master_data *drv_data = spi_master_get_devdata(spi->master); + u16 bfin_ctl_reg; + int ret = -EINVAL; /* Only alloc (or use chip_info) on first setup */ + chip_info = NULL; chip = spi_get_ctldata(spi); if (chip == NULL) { - chip = kzalloc(sizeof(struct chip_data), GFP_KERNEL); - if (!chip) - return -ENOMEM; + chip = kzalloc(sizeof(*chip), GFP_KERNEL); + if (!chip) { + dev_err(&spi->dev, "cannot allocate chip data\n"); + ret = -ENOMEM; + goto error; + } chip->enable_dma = 0; chip_info = spi->controller_data; } + /* Let people set non-standard bits directly */ + bfin_ctl_reg = BIT_CTL_OPENDRAIN | BIT_CTL_EMISO | + BIT_CTL_PSSE | BIT_CTL_GM | BIT_CTL_SZ; + /* chip_info isn't always needed */ if (chip_info) { /* Make sure people stop trying to set fields via ctl_reg * when they should actually be using common SPI framework. - * Currently we let through: WOM EMISO PSSE GM SZ TIMOD. + * Currently we let through: WOM EMISO PSSE GM SZ. * Not sure if a user actually needs/uses any of these, * but let's assume (for now) they do. */ - if (chip_info->ctl_reg & (SPE|MSTR|CPOL|CPHA|LSBF|SIZE)) { + if (chip_info->ctl_reg & ~bfin_ctl_reg) { dev_err(&spi->dev, "do not set bits in ctl_reg " "that the SPI framework manages\n"); - return -EINVAL; + goto error; } - chip->enable_dma = chip_info->enable_dma != 0 && drv_data->master_info->enable_dma; chip->ctl_reg = chip_info->ctl_reg; - chip->bits_per_word = chip_info->bits_per_word; - chip->cs_change_per_word = chip_info->cs_change_per_word; chip->cs_chg_udelay = chip_info->cs_chg_udelay; - chip->cs_gpio = chip_info->cs_gpio; chip->idle_tx_val = chip_info->idle_tx_val; + chip->pio_interrupt = chip_info->pio_interrupt; + spi->bits_per_word = chip_info->bits_per_word; + } else { + /* force a default base state */ + chip->ctl_reg &= bfin_ctl_reg; + } + + if (spi->bits_per_word != 8 && spi->bits_per_word != 16) { + dev_err(&spi->dev, "%d bits_per_word is not supported\n", + spi->bits_per_word); + goto error; } /* translate common spi framework into our register */ + if (spi->mode & ~(SPI_CPOL | SPI_CPHA | SPI_LSB_FIRST)) { + dev_err(&spi->dev, "unsupported spi modes detected\n"); + goto error; + } if (spi->mode & SPI_CPOL) - chip->ctl_reg |= CPOL; + chip->ctl_reg |= BIT_CTL_CPOL; if (spi->mode & SPI_CPHA) - chip->ctl_reg |= CPHA; + chip->ctl_reg |= BIT_CTL_CPHA; if (spi->mode & SPI_LSB_FIRST) - chip->ctl_reg |= LSBF; + chip->ctl_reg |= BIT_CTL_LSBF; /* we dont support running in slave mode (yet?) */ - chip->ctl_reg |= MSTR; + chip->ctl_reg |= BIT_CTL_MASTER; /* + * Notice: for blackfin, the speed_hz is the value of register + * SPI_BAUD, not the real baudrate + */ + chip->baud = hz_to_spi_baud(spi->max_speed_hz); + chip->chip_select_num = spi->chip_select; + if (chip->chip_select_num < MAX_CTRL_CS) { + if (!(spi->mode & SPI_CPHA)) + dev_warn(&spi->dev, "Warning: SPI CPHA not set:" + " Slave Select not under software control!\n" + " See Documentation/blackfin/bfin-spi-notes.txt"); + + chip->flag = (1 << spi->chip_select) << 8; + } else + chip->cs_gpio = chip->chip_select_num - MAX_CTRL_CS; + + if (chip->enable_dma && chip->pio_interrupt) { + dev_err(&spi->dev, "enable_dma is set, " + "do not set pio_interrupt\n"); + goto error; + } + /* * if any one SPI chip is registered and wants DMA, request the * DMA channel for it */ if (chip->enable_dma && !drv_data->dma_requested) { /* register dma irq handler */ - if (request_dma(drv_data->dma_channel, "BFIN_SPI_DMA") < 0) { - dev_dbg(&spi->dev, + ret = request_dma(drv_data->dma_channel, "BFIN_SPI_DMA"); + if (ret) { + dev_err(&spi->dev, "Unable to request BlackFin SPI DMA channel\n"); - return -ENODEV; + goto error; } - if (set_dma_callback(drv_data->dma_channel, - bfin_spi_dma_irq_handler, drv_data) < 0) { - dev_dbg(&spi->dev, "Unable to set dma callback\n"); - return -EPERM; + drv_data->dma_requested = 1; + + ret = set_dma_callback(drv_data->dma_channel, + bfin_spi_dma_irq_handler, drv_data); + if (ret) { + dev_err(&spi->dev, "Unable to set dma callback\n"); + goto error; } dma_disable_irq(drv_data->dma_channel); - drv_data->dma_requested = 1; } - /* - * Notice: for blackfin, the speed_hz is the value of register - * SPI_BAUD, not the real baudrate - */ - chip->baud = hz_to_spi_baud(spi->max_speed_hz); - chip->flag = 1 << (spi->chip_select); - chip->chip_select_num = spi->chip_select; + if (chip->pio_interrupt && !drv_data->irq_requested) { + ret = request_irq(drv_data->spi_irq, bfin_spi_pio_irq_handler, + IRQF_DISABLED, "BFIN_SPI", drv_data); + if (ret) { + dev_err(&spi->dev, "Unable to register spi IRQ\n"); + goto error; + } + drv_data->irq_requested = 1; + /* we use write mode, spi irq has to be disabled here */ + disable_irq(drv_data->spi_irq); + } - if (chip->chip_select_num == 0) { + if (chip->chip_select_num >= MAX_CTRL_CS) { ret = gpio_request(chip->cs_gpio, spi->modalias); if (ret) { - if (drv_data->dma_requested) - free_dma(drv_data->dma_channel); - return ret; + dev_err(&spi->dev, "gpio_request() error\n"); + goto pin_error; } gpio_direction_output(chip->cs_gpio, 1); } - switch (chip->bits_per_word) { - case 8: - chip->n_bytes = 1; - chip->width = CFG_SPI_WORDSIZE8; - chip->read = chip->cs_change_per_word ? - bfin_spi_u8_cs_chg_reader : bfin_spi_u8_reader; - chip->write = chip->cs_change_per_word ? - bfin_spi_u8_cs_chg_writer : bfin_spi_u8_writer; - chip->duplex = chip->cs_change_per_word ? - bfin_spi_u8_cs_chg_duplex : bfin_spi_u8_duplex; - break; - - case 16: - chip->n_bytes = 2; - chip->width = CFG_SPI_WORDSIZE16; - chip->read = chip->cs_change_per_word ? - bfin_spi_u16_cs_chg_reader : bfin_spi_u16_reader; - chip->write = chip->cs_change_per_word ? - bfin_spi_u16_cs_chg_writer : bfin_spi_u16_writer; - chip->duplex = chip->cs_change_per_word ? - bfin_spi_u16_cs_chg_duplex : bfin_spi_u16_duplex; - break; - - default: - dev_err(&spi->dev, "%d bits_per_word is not supported\n", - chip->bits_per_word); - if (chip_info) - kfree(chip); - return -ENODEV; - } - dev_dbg(&spi->dev, "setup spi chip %s, width is %d, dma is %d\n", - spi->modalias, chip->width, chip->enable_dma); + spi->modalias, spi->bits_per_word, chip->enable_dma); dev_dbg(&spi->dev, "ctl_reg is 0x%x, flag_reg is 0x%x\n", chip->ctl_reg, chip->flag); spi_set_ctldata(spi, chip); dev_dbg(&spi->dev, "chip select number is %d\n", chip->chip_select_num); - if ((chip->chip_select_num > 0) - && (chip->chip_select_num <= spi->master->num_chipselect)) - peripheral_request(ssel[spi->master->bus_num] - [chip->chip_select_num-1], spi->modalias); + if (chip->chip_select_num < MAX_CTRL_CS) { + ret = peripheral_request(ssel[spi->master->bus_num] + [chip->chip_select_num-1], spi->modalias); + if (ret) { + dev_err(&spi->dev, "peripheral_request() error\n"); + goto pin_error; + } + } + bfin_spi_cs_enable(drv_data, chip); bfin_spi_cs_deactive(drv_data, chip); return 0; + + pin_error: + if (chip->chip_select_num >= MAX_CTRL_CS) + gpio_free(chip->cs_gpio); + else + peripheral_free(ssel[spi->master->bus_num] + [chip->chip_select_num - 1]); + error: + if (chip) { + if (drv_data->dma_requested) + free_dma(drv_data->dma_channel); + drv_data->dma_requested = 0; + + kfree(chip); + /* prevent free 'chip' twice */ + spi_set_ctldata(spi, NULL); + } + + return ret; } /* @@ -1152,28 +1155,30 @@ static int bfin_spi_setup(struct spi_device *spi) */ static void bfin_spi_cleanup(struct spi_device *spi) { - struct chip_data *chip = spi_get_ctldata(spi); + struct bfin_spi_slave_data *chip = spi_get_ctldata(spi); + struct bfin_spi_master_data *drv_data = spi_master_get_devdata(spi->master); if (!chip) return; - if ((chip->chip_select_num > 0) - && (chip->chip_select_num <= spi->master->num_chipselect)) + if (chip->chip_select_num < MAX_CTRL_CS) { peripheral_free(ssel[spi->master->bus_num] [chip->chip_select_num-1]); - - if (chip->chip_select_num == 0) + bfin_spi_cs_disable(drv_data, chip); + } else gpio_free(chip->cs_gpio); kfree(chip); + /* prevent free 'chip' twice */ + spi_set_ctldata(spi, NULL); } -static inline int bfin_spi_init_queue(struct driver_data *drv_data) +static inline int bfin_spi_init_queue(struct bfin_spi_master_data *drv_data) { INIT_LIST_HEAD(&drv_data->queue); spin_lock_init(&drv_data->lock); - drv_data->run = QUEUE_STOPPED; + drv_data->running = false; drv_data->busy = 0; /* init transfer tasklet */ @@ -1190,18 +1195,18 @@ static inline int bfin_spi_init_queue(struct driver_data *drv_data) return 0; } -static inline int bfin_spi_start_queue(struct driver_data *drv_data) +static inline int bfin_spi_start_queue(struct bfin_spi_master_data *drv_data) { unsigned long flags; spin_lock_irqsave(&drv_data->lock, flags); - if (drv_data->run == QUEUE_RUNNING || drv_data->busy) { + if (drv_data->running || drv_data->busy) { spin_unlock_irqrestore(&drv_data->lock, flags); return -EBUSY; } - drv_data->run = QUEUE_RUNNING; + drv_data->running = true; drv_data->cur_msg = NULL; drv_data->cur_transfer = NULL; drv_data->cur_chip = NULL; @@ -1212,7 +1217,7 @@ static inline int bfin_spi_start_queue(struct driver_data *drv_data) return 0; } -static inline int bfin_spi_stop_queue(struct driver_data *drv_data) +static inline int bfin_spi_stop_queue(struct bfin_spi_master_data *drv_data) { unsigned long flags; unsigned limit = 500; @@ -1226,7 +1231,7 @@ static inline int bfin_spi_stop_queue(struct driver_data *drv_data) * execution path (pump_messages) would be required to call wake_up or * friends on every SPI message. Do this instead */ - drv_data->run = QUEUE_STOPPED; + drv_data->running = false; while (!list_empty(&drv_data->queue) && drv_data->busy && limit--) { spin_unlock_irqrestore(&drv_data->lock, flags); msleep(10); @@ -1241,7 +1246,7 @@ static inline int bfin_spi_stop_queue(struct driver_data *drv_data) return status; } -static inline int bfin_spi_destroy_queue(struct driver_data *drv_data) +static inline int bfin_spi_destroy_queue(struct bfin_spi_master_data *drv_data) { int status; @@ -1259,14 +1264,14 @@ static int __init bfin_spi_probe(struct platform_device *pdev) struct device *dev = &pdev->dev; struct bfin5xx_spi_master *platform_info; struct spi_master *master; - struct driver_data *drv_data = 0; + struct bfin_spi_master_data *drv_data; struct resource *res; int status = 0; platform_info = dev->platform_data; /* Allocate master with space for drv_data */ - master = spi_alloc_master(dev, sizeof(struct driver_data) + 16); + master = spi_alloc_master(dev, sizeof(*drv_data)); if (!master) { dev_err(&pdev->dev, "can not alloc spi_master\n"); return -ENOMEM; @@ -1302,11 +1307,19 @@ static int __init bfin_spi_probe(struct platform_device *pdev) goto out_error_ioremap; } - drv_data->dma_channel = platform_get_irq(pdev, 0); - if (drv_data->dma_channel < 0) { + res = platform_get_resource(pdev, IORESOURCE_DMA, 0); + if (res == NULL) { dev_err(dev, "No DMA channel specified\n"); status = -ENOENT; - goto out_error_no_dma_ch; + goto out_error_free_io; + } + drv_data->dma_channel = res->start; + + drv_data->spi_irq = platform_get_irq(pdev, 0); + if (drv_data->spi_irq < 0) { + dev_err(dev, "No spi pio irq specified\n"); + status = -ENOENT; + goto out_error_free_io; } /* Initial and start queue */ @@ -1328,6 +1341,12 @@ static int __init bfin_spi_probe(struct platform_device *pdev) goto out_error_queue_alloc; } + /* Reset SPI registers. If these registers were used by the boot loader, + * the sky may fall on your head if you enable the dma controller. + */ + write_CTRL(drv_data, BIT_CTL_CPHA | BIT_CTL_MASTER); + write_FLAG(drv_data, 0xFF00); + /* Register with the SPI framework */ platform_set_drvdata(pdev, drv_data); status = spi_register_master(master); @@ -1343,7 +1362,7 @@ static int __init bfin_spi_probe(struct platform_device *pdev) out_error_queue_alloc: bfin_spi_destroy_queue(drv_data); -out_error_no_dma_ch: +out_error_free_io: iounmap((void *) drv_data->regs_base); out_error_ioremap: out_error_get_res: @@ -1355,7 +1374,7 @@ out_error_get_res: /* stop hardware and remove the driver */ static int __devexit bfin_spi_remove(struct platform_device *pdev) { - struct driver_data *drv_data = platform_get_drvdata(pdev); + struct bfin_spi_master_data *drv_data = platform_get_drvdata(pdev); int status = 0; if (!drv_data) @@ -1375,6 +1394,11 @@ static int __devexit bfin_spi_remove(struct platform_device *pdev) free_dma(drv_data->dma_channel); } + if (drv_data->irq_requested) { + free_irq(drv_data->spi_irq, drv_data); + drv_data->irq_requested = 0; + } + /* Disconnect from the SPI framework */ spi_unregister_master(drv_data->master); @@ -1389,26 +1413,32 @@ static int __devexit bfin_spi_remove(struct platform_device *pdev) #ifdef CONFIG_PM static int bfin_spi_suspend(struct platform_device *pdev, pm_message_t state) { - struct driver_data *drv_data = platform_get_drvdata(pdev); + struct bfin_spi_master_data *drv_data = platform_get_drvdata(pdev); int status = 0; status = bfin_spi_stop_queue(drv_data); if (status != 0) return status; - /* stop hardware */ - bfin_spi_disable(drv_data); + drv_data->ctrl_reg = read_CTRL(drv_data); + drv_data->flag_reg = read_FLAG(drv_data); + + /* + * reset SPI_CTL and SPI_FLG registers + */ + write_CTRL(drv_data, BIT_CTL_CPHA | BIT_CTL_MASTER); + write_FLAG(drv_data, 0xFF00); return 0; } static int bfin_spi_resume(struct platform_device *pdev) { - struct driver_data *drv_data = platform_get_drvdata(pdev); + struct bfin_spi_master_data *drv_data = platform_get_drvdata(pdev); int status = 0; - /* Enable the SPI interface */ - bfin_spi_enable(drv_data); + write_CTRL(drv_data, drv_data->ctrl_reg); + write_FLAG(drv_data, drv_data->flag_reg); /* Start the queue running */ status = bfin_spi_start_queue(drv_data); @@ -1439,7 +1469,7 @@ static int __init bfin_spi_init(void) { return platform_driver_probe(&bfin_spi_driver, bfin_spi_probe); } -module_init(bfin_spi_init); +subsys_initcall(bfin_spi_init); static void __exit bfin_spi_exit(void) { diff --git a/drivers/spi/spi_fsl_espi.c b/drivers/spi/spi_fsl_espi.c new file mode 100644 index 000000000000..e3b4f6451966 --- /dev/null +++ b/drivers/spi/spi_fsl_espi.c @@ -0,0 +1,748 @@ +/* + * Freescale eSPI controller driver. + * + * Copyright 2010 Freescale Semiconductor, Inc. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + */ +#include <linux/module.h> +#include <linux/delay.h> +#include <linux/irq.h> +#include <linux/spi/spi.h> +#include <linux/platform_device.h> +#include <linux/fsl_devices.h> +#include <linux/mm.h> +#include <linux/of.h> +#include <linux/of_platform.h> +#include <linux/of_spi.h> +#include <linux/interrupt.h> +#include <linux/err.h> +#include <sysdev/fsl_soc.h> + +#include "spi_fsl_lib.h" + +/* eSPI Controller registers */ +struct fsl_espi_reg { + __be32 mode; /* 0x000 - eSPI mode register */ + __be32 event; /* 0x004 - eSPI event register */ + __be32 mask; /* 0x008 - eSPI mask register */ + __be32 command; /* 0x00c - eSPI command register */ + __be32 transmit; /* 0x010 - eSPI transmit FIFO access register*/ + __be32 receive; /* 0x014 - eSPI receive FIFO access register*/ + u8 res[8]; /* 0x018 - 0x01c reserved */ + __be32 csmode[4]; /* 0x020 - 0x02c eSPI cs mode register */ +}; + +struct fsl_espi_transfer { + const void *tx_buf; + void *rx_buf; + unsigned len; + unsigned n_tx; + unsigned n_rx; + unsigned actual_length; + int status; +}; + +/* eSPI Controller mode register definitions */ +#define SPMODE_ENABLE (1 << 31) +#define SPMODE_LOOP (1 << 30) +#define SPMODE_TXTHR(x) ((x) << 8) +#define SPMODE_RXTHR(x) ((x) << 0) + +/* eSPI Controller CS mode register definitions */ +#define CSMODE_CI_INACTIVEHIGH (1 << 31) +#define CSMODE_CP_BEGIN_EDGECLK (1 << 30) +#define CSMODE_REV (1 << 29) +#define CSMODE_DIV16 (1 << 28) +#define CSMODE_PM(x) ((x) << 24) +#define CSMODE_POL_1 (1 << 20) +#define CSMODE_LEN(x) ((x) << 16) +#define CSMODE_BEF(x) ((x) << 12) +#define CSMODE_AFT(x) ((x) << 8) +#define CSMODE_CG(x) ((x) << 3) + +/* Default mode/csmode for eSPI controller */ +#define SPMODE_INIT_VAL (SPMODE_TXTHR(4) | SPMODE_RXTHR(3)) +#define CSMODE_INIT_VAL (CSMODE_POL_1 | CSMODE_BEF(0) \ + | CSMODE_AFT(0) | CSMODE_CG(1)) + +/* SPIE register values */ +#define SPIE_NE 0x00000200 /* Not empty */ +#define SPIE_NF 0x00000100 /* Not full */ + +/* SPIM register values */ +#define SPIM_NE 0x00000200 /* Not empty */ +#define SPIM_NF 0x00000100 /* Not full */ +#define SPIE_RXCNT(reg) ((reg >> 24) & 0x3F) +#define SPIE_TXCNT(reg) ((reg >> 16) & 0x3F) + +/* SPCOM register values */ +#define SPCOM_CS(x) ((x) << 30) +#define SPCOM_TRANLEN(x) ((x) << 0) +#define SPCOM_TRANLEN_MAX 0xFFFF /* Max transaction length */ + +static void fsl_espi_change_mode(struct spi_device *spi) +{ + struct mpc8xxx_spi *mspi = spi_master_get_devdata(spi->master); + struct spi_mpc8xxx_cs *cs = spi->controller_state; + struct fsl_espi_reg *reg_base = mspi->reg_base; + __be32 __iomem *mode = ®_base->csmode[spi->chip_select]; + __be32 __iomem *espi_mode = ®_base->mode; + u32 tmp; + unsigned long flags; + + /* Turn off IRQs locally to minimize time that SPI is disabled. */ + local_irq_save(flags); + + /* Turn off SPI unit prior changing mode */ + tmp = mpc8xxx_spi_read_reg(espi_mode); + mpc8xxx_spi_write_reg(espi_mode, tmp & ~SPMODE_ENABLE); + mpc8xxx_spi_write_reg(mode, cs->hw_mode); + mpc8xxx_spi_write_reg(espi_mode, tmp); + + local_irq_restore(flags); +} + +static u32 fsl_espi_tx_buf_lsb(struct mpc8xxx_spi *mpc8xxx_spi) +{ + u32 data; + u16 data_h; + u16 data_l; + const u32 *tx = mpc8xxx_spi->tx; + + if (!tx) + return 0; + + data = *tx++ << mpc8xxx_spi->tx_shift; + data_l = data & 0xffff; + data_h = (data >> 16) & 0xffff; + swab16s(&data_l); + swab16s(&data_h); + data = data_h | data_l; + + mpc8xxx_spi->tx = tx; + return data; +} + +static int fsl_espi_setup_transfer(struct spi_device *spi, + struct spi_transfer *t) +{ + struct mpc8xxx_spi *mpc8xxx_spi = spi_master_get_devdata(spi->master); + int bits_per_word = 0; + u8 pm; + u32 hz = 0; + struct spi_mpc8xxx_cs *cs = spi->controller_state; + + if (t) { + bits_per_word = t->bits_per_word; + hz = t->speed_hz; + } + + /* spi_transfer level calls that work per-word */ + if (!bits_per_word) + bits_per_word = spi->bits_per_word; + + /* Make sure its a bit width we support [4..16] */ + if ((bits_per_word < 4) || (bits_per_word > 16)) + return -EINVAL; + + if (!hz) + hz = spi->max_speed_hz; + + cs->rx_shift = 0; + cs->tx_shift = 0; + cs->get_rx = mpc8xxx_spi_rx_buf_u32; + cs->get_tx = mpc8xxx_spi_tx_buf_u32; + if (bits_per_word <= 8) { + cs->rx_shift = 8 - bits_per_word; + } else if (bits_per_word <= 16) { + cs->rx_shift = 16 - bits_per_word; + if (spi->mode & SPI_LSB_FIRST) + cs->get_tx = fsl_espi_tx_buf_lsb; + } else { + return -EINVAL; + } + + mpc8xxx_spi->rx_shift = cs->rx_shift; + mpc8xxx_spi->tx_shift = cs->tx_shift; + mpc8xxx_spi->get_rx = cs->get_rx; + mpc8xxx_spi->get_tx = cs->get_tx; + + bits_per_word = bits_per_word - 1; + + /* mask out bits we are going to set */ + cs->hw_mode &= ~(CSMODE_LEN(0xF) | CSMODE_DIV16 | CSMODE_PM(0xF)); + + cs->hw_mode |= CSMODE_LEN(bits_per_word); + + if ((mpc8xxx_spi->spibrg / hz) > 64) { + cs->hw_mode |= CSMODE_DIV16; + pm = (mpc8xxx_spi->spibrg - 1) / (hz * 64) + 1; + + WARN_ONCE(pm > 16, "%s: Requested speed is too low: %d Hz. " + "Will use %d Hz instead.\n", dev_name(&spi->dev), + hz, mpc8xxx_spi->spibrg / 1024); + if (pm > 16) + pm = 16; + } else { + pm = (mpc8xxx_spi->spibrg - 1) / (hz * 4) + 1; + } + if (pm) + pm--; + + cs->hw_mode |= CSMODE_PM(pm); + + fsl_espi_change_mode(spi); + return 0; +} + +static int fsl_espi_cpu_bufs(struct mpc8xxx_spi *mspi, struct spi_transfer *t, + unsigned int len) +{ + u32 word; + struct fsl_espi_reg *reg_base = mspi->reg_base; + + mspi->count = len; + + /* enable rx ints */ + mpc8xxx_spi_write_reg(®_base->mask, SPIM_NE); + + /* transmit word */ + word = mspi->get_tx(mspi); + mpc8xxx_spi_write_reg(®_base->transmit, word); + + return 0; +} + +static int fsl_espi_bufs(struct spi_device *spi, struct spi_transfer *t) +{ + struct mpc8xxx_spi *mpc8xxx_spi = spi_master_get_devdata(spi->master); + struct fsl_espi_reg *reg_base = mpc8xxx_spi->reg_base; + unsigned int len = t->len; + u8 bits_per_word; + int ret; + + bits_per_word = spi->bits_per_word; + if (t->bits_per_word) + bits_per_word = t->bits_per_word; + + mpc8xxx_spi->len = t->len; + len = roundup(len, 4) / 4; + + mpc8xxx_spi->tx = t->tx_buf; + mpc8xxx_spi->rx = t->rx_buf; + + INIT_COMPLETION(mpc8xxx_spi->done); + + /* Set SPCOM[CS] and SPCOM[TRANLEN] field */ + if ((t->len - 1) > SPCOM_TRANLEN_MAX) { + dev_err(mpc8xxx_spi->dev, "Transaction length (%d)" + " beyond the SPCOM[TRANLEN] field\n", t->len); + return -EINVAL; + } + mpc8xxx_spi_write_reg(®_base->command, + (SPCOM_CS(spi->chip_select) | SPCOM_TRANLEN(t->len - 1))); + + ret = fsl_espi_cpu_bufs(mpc8xxx_spi, t, len); + if (ret) + return ret; + + wait_for_completion(&mpc8xxx_spi->done); + + /* disable rx ints */ + mpc8xxx_spi_write_reg(®_base->mask, 0); + + return mpc8xxx_spi->count; +} + +static void fsl_espi_addr2cmd(unsigned int addr, u8 *cmd) +{ + if (cmd[1] && cmd[2] && cmd[3]) { + cmd[1] = (u8)(addr >> 16); + cmd[2] = (u8)(addr >> 8); + cmd[3] = (u8)(addr >> 0); + } +} + +static unsigned int fsl_espi_cmd2addr(u8 *cmd) +{ + if (cmd[1] && cmd[2] && cmd[3]) + return cmd[1] << 16 | cmd[2] << 8 | cmd[3] << 0; + + return 0; +} + +static void fsl_espi_do_trans(struct spi_message *m, + struct fsl_espi_transfer *tr) +{ + struct spi_device *spi = m->spi; + struct mpc8xxx_spi *mspi = spi_master_get_devdata(spi->master); + struct fsl_espi_transfer *espi_trans = tr; + struct spi_message message; + struct spi_transfer *t, *first, trans; + int status = 0; + + spi_message_init(&message); + memset(&trans, 0, sizeof(trans)); + + first = list_first_entry(&m->transfers, struct spi_transfer, + transfer_list); + list_for_each_entry(t, &m->transfers, transfer_list) { + if ((first->bits_per_word != t->bits_per_word) || + (first->speed_hz != t->speed_hz)) { + espi_trans->status = -EINVAL; + dev_err(mspi->dev, "bits_per_word/speed_hz should be" + " same for the same SPI transfer\n"); + return; + } + + trans.speed_hz = t->speed_hz; + trans.bits_per_word = t->bits_per_word; + trans.delay_usecs = max(first->delay_usecs, t->delay_usecs); + } + + trans.len = espi_trans->len; + trans.tx_buf = espi_trans->tx_buf; + trans.rx_buf = espi_trans->rx_buf; + spi_message_add_tail(&trans, &message); + + list_for_each_entry(t, &message.transfers, transfer_list) { + if (t->bits_per_word || t->speed_hz) { + status = -EINVAL; + + status = fsl_espi_setup_transfer(spi, t); + if (status < 0) + break; + } + + if (t->len) + status = fsl_espi_bufs(spi, t); + + if (status) { + status = -EMSGSIZE; + break; + } + + if (t->delay_usecs) + udelay(t->delay_usecs); + } + + espi_trans->status = status; + fsl_espi_setup_transfer(spi, NULL); +} + +static void fsl_espi_cmd_trans(struct spi_message *m, + struct fsl_espi_transfer *trans, u8 *rx_buff) +{ + struct spi_transfer *t; + u8 *local_buf; + int i = 0; + struct fsl_espi_transfer *espi_trans = trans; + + local_buf = kzalloc(SPCOM_TRANLEN_MAX, GFP_KERNEL); + if (!local_buf) { + espi_trans->status = -ENOMEM; + return; + } + + list_for_each_entry(t, &m->transfers, transfer_list) { + if (t->tx_buf) { + memcpy(local_buf + i, t->tx_buf, t->len); + i += t->len; + } + } + + espi_trans->tx_buf = local_buf; + espi_trans->rx_buf = local_buf + espi_trans->n_tx; + fsl_espi_do_trans(m, espi_trans); + + espi_trans->actual_length = espi_trans->len; + kfree(local_buf); +} + +static void fsl_espi_rw_trans(struct spi_message *m, + struct fsl_espi_transfer *trans, u8 *rx_buff) +{ + struct fsl_espi_transfer *espi_trans = trans; + unsigned int n_tx = espi_trans->n_tx; + unsigned int n_rx = espi_trans->n_rx; + struct spi_transfer *t; + u8 *local_buf; + u8 *rx_buf = rx_buff; + unsigned int trans_len; + unsigned int addr; + int i, pos, loop; + + local_buf = kzalloc(SPCOM_TRANLEN_MAX, GFP_KERNEL); + if (!local_buf) { + espi_trans->status = -ENOMEM; + return; + } + + for (pos = 0, loop = 0; pos < n_rx; pos += trans_len, loop++) { + trans_len = n_rx - pos; + if (trans_len > SPCOM_TRANLEN_MAX - n_tx) + trans_len = SPCOM_TRANLEN_MAX - n_tx; + + i = 0; + list_for_each_entry(t, &m->transfers, transfer_list) { + if (t->tx_buf) { + memcpy(local_buf + i, t->tx_buf, t->len); + i += t->len; + } + } + + addr = fsl_espi_cmd2addr(local_buf); + addr += pos; + fsl_espi_addr2cmd(addr, local_buf); + + espi_trans->n_tx = n_tx; + espi_trans->n_rx = trans_len; + espi_trans->len = trans_len + n_tx; + espi_trans->tx_buf = local_buf; + espi_trans->rx_buf = local_buf + n_tx; + fsl_espi_do_trans(m, espi_trans); + + memcpy(rx_buf + pos, espi_trans->rx_buf + n_tx, trans_len); + + if (loop > 0) + espi_trans->actual_length += espi_trans->len - n_tx; + else + espi_trans->actual_length += espi_trans->len; + } + + kfree(local_buf); +} + +static void fsl_espi_do_one_msg(struct spi_message *m) +{ + struct spi_transfer *t; + u8 *rx_buf = NULL; + unsigned int n_tx = 0; + unsigned int n_rx = 0; + struct fsl_espi_transfer espi_trans; + + list_for_each_entry(t, &m->transfers, transfer_list) { + if (t->tx_buf) + n_tx += t->len; + if (t->rx_buf) { + n_rx += t->len; + rx_buf = t->rx_buf; + } + } + + espi_trans.n_tx = n_tx; + espi_trans.n_rx = n_rx; + espi_trans.len = n_tx + n_rx; + espi_trans.actual_length = 0; + espi_trans.status = 0; + + if (!rx_buf) + fsl_espi_cmd_trans(m, &espi_trans, NULL); + else + fsl_espi_rw_trans(m, &espi_trans, rx_buf); + + m->actual_length = espi_trans.actual_length; + m->status = espi_trans.status; + m->complete(m->context); +} + +static int fsl_espi_setup(struct spi_device *spi) +{ + struct mpc8xxx_spi *mpc8xxx_spi; + struct fsl_espi_reg *reg_base; + int retval; + u32 hw_mode; + u32 loop_mode; + struct spi_mpc8xxx_cs *cs = spi->controller_state; + + if (!spi->max_speed_hz) + return -EINVAL; + + if (!cs) { + cs = kzalloc(sizeof *cs, GFP_KERNEL); + if (!cs) + return -ENOMEM; + spi->controller_state = cs; + } + + mpc8xxx_spi = spi_master_get_devdata(spi->master); + reg_base = mpc8xxx_spi->reg_base; + + hw_mode = cs->hw_mode; /* Save orginal settings */ + cs->hw_mode = mpc8xxx_spi_read_reg( + ®_base->csmode[spi->chip_select]); + /* mask out bits we are going to set */ + cs->hw_mode &= ~(CSMODE_CP_BEGIN_EDGECLK | CSMODE_CI_INACTIVEHIGH + | CSMODE_REV); + + if (spi->mode & SPI_CPHA) + cs->hw_mode |= CSMODE_CP_BEGIN_EDGECLK; + if (spi->mode & SPI_CPOL) + cs->hw_mode |= CSMODE_CI_INACTIVEHIGH; + if (!(spi->mode & SPI_LSB_FIRST)) + cs->hw_mode |= CSMODE_REV; + + /* Handle the loop mode */ + loop_mode = mpc8xxx_spi_read_reg(®_base->mode); + loop_mode &= ~SPMODE_LOOP; + if (spi->mode & SPI_LOOP) + loop_mode |= SPMODE_LOOP; + mpc8xxx_spi_write_reg(®_base->mode, loop_mode); + + retval = fsl_espi_setup_transfer(spi, NULL); + if (retval < 0) { + cs->hw_mode = hw_mode; /* Restore settings */ + return retval; + } + return 0; +} + +void fsl_espi_cpu_irq(struct mpc8xxx_spi *mspi, u32 events) +{ + struct fsl_espi_reg *reg_base = mspi->reg_base; + + /* We need handle RX first */ + if (events & SPIE_NE) { + u32 rx_data; + + /* Spin until RX is done */ + while (SPIE_RXCNT(events) < min(4, mspi->len)) { + cpu_relax(); + events = mpc8xxx_spi_read_reg(®_base->event); + } + mspi->len -= 4; + + rx_data = mpc8xxx_spi_read_reg(®_base->receive); + + if (mspi->rx) + mspi->get_rx(rx_data, mspi); + } + + if (!(events & SPIE_NF)) { + int ret; + + /* spin until TX is done */ + ret = spin_event_timeout(((events = mpc8xxx_spi_read_reg( + ®_base->event)) & SPIE_NF) == 0, 1000, 0); + if (!ret) { + dev_err(mspi->dev, "tired waiting for SPIE_NF\n"); + return; + } + } + + /* Clear the events */ + mpc8xxx_spi_write_reg(®_base->event, events); + + mspi->count -= 1; + if (mspi->count) { + u32 word = mspi->get_tx(mspi); + + mpc8xxx_spi_write_reg(®_base->transmit, word); + } else { + complete(&mspi->done); + } +} + +static irqreturn_t fsl_espi_irq(s32 irq, void *context_data) +{ + struct mpc8xxx_spi *mspi = context_data; + struct fsl_espi_reg *reg_base = mspi->reg_base; + irqreturn_t ret = IRQ_NONE; + u32 events; + + /* Get interrupt events(tx/rx) */ + events = mpc8xxx_spi_read_reg(®_base->event); + if (events) + ret = IRQ_HANDLED; + + dev_vdbg(mspi->dev, "%s: events %x\n", __func__, events); + + fsl_espi_cpu_irq(mspi, events); + + return ret; +} + +static void fsl_espi_remove(struct mpc8xxx_spi *mspi) +{ + iounmap(mspi->reg_base); +} + +static struct spi_master * __devinit fsl_espi_probe(struct device *dev, + struct resource *mem, unsigned int irq) +{ + struct fsl_spi_platform_data *pdata = dev->platform_data; + struct spi_master *master; + struct mpc8xxx_spi *mpc8xxx_spi; + struct fsl_espi_reg *reg_base; + u32 regval; + int i, ret = 0; + + master = spi_alloc_master(dev, sizeof(struct mpc8xxx_spi)); + if (!master) { + ret = -ENOMEM; + goto err; + } + + dev_set_drvdata(dev, master); + + ret = mpc8xxx_spi_probe(dev, mem, irq); + if (ret) + goto err_probe; + + master->setup = fsl_espi_setup; + + mpc8xxx_spi = spi_master_get_devdata(master); + mpc8xxx_spi->spi_do_one_msg = fsl_espi_do_one_msg; + mpc8xxx_spi->spi_remove = fsl_espi_remove; + + mpc8xxx_spi->reg_base = ioremap(mem->start, resource_size(mem)); + if (!mpc8xxx_spi->reg_base) { + ret = -ENOMEM; + goto err_probe; + } + + reg_base = mpc8xxx_spi->reg_base; + + /* Register for SPI Interrupt */ + ret = request_irq(mpc8xxx_spi->irq, fsl_espi_irq, + 0, "fsl_espi", mpc8xxx_spi); + if (ret) + goto free_irq; + + if (mpc8xxx_spi->flags & SPI_QE_CPU_MODE) { + mpc8xxx_spi->rx_shift = 16; + mpc8xxx_spi->tx_shift = 24; + } + + /* SPI controller initializations */ + mpc8xxx_spi_write_reg(®_base->mode, 0); + mpc8xxx_spi_write_reg(®_base->mask, 0); + mpc8xxx_spi_write_reg(®_base->command, 0); + mpc8xxx_spi_write_reg(®_base->event, 0xffffffff); + + /* Init eSPI CS mode register */ + for (i = 0; i < pdata->max_chipselect; i++) + mpc8xxx_spi_write_reg(®_base->csmode[i], CSMODE_INIT_VAL); + + /* Enable SPI interface */ + regval = pdata->initial_spmode | SPMODE_INIT_VAL | SPMODE_ENABLE; + + mpc8xxx_spi_write_reg(®_base->mode, regval); + + ret = spi_register_master(master); + if (ret < 0) + goto unreg_master; + + dev_info(dev, "at 0x%p (irq = %d)\n", reg_base, mpc8xxx_spi->irq); + + return master; + +unreg_master: + free_irq(mpc8xxx_spi->irq, mpc8xxx_spi); +free_irq: + iounmap(mpc8xxx_spi->reg_base); +err_probe: + spi_master_put(master); +err: + return ERR_PTR(ret); +} + +static int of_fsl_espi_get_chipselects(struct device *dev) +{ + struct device_node *np = dev->of_node; + struct fsl_spi_platform_data *pdata = dev->platform_data; + const u32 *prop; + int len; + + prop = of_get_property(np, "fsl,espi-num-chipselects", &len); + if (!prop || len < sizeof(*prop)) { + dev_err(dev, "No 'fsl,espi-num-chipselects' property\n"); + return -EINVAL; + } + + pdata->max_chipselect = *prop; + pdata->cs_control = NULL; + + return 0; +} + +static int __devinit of_fsl_espi_probe(struct platform_device *ofdev, + const struct of_device_id *ofid) +{ + struct device *dev = &ofdev->dev; + struct device_node *np = ofdev->dev.of_node; + struct spi_master *master; + struct resource mem; + struct resource irq; + int ret = -ENOMEM; + + ret = of_mpc8xxx_spi_probe(ofdev, ofid); + if (ret) + return ret; + + ret = of_fsl_espi_get_chipselects(dev); + if (ret) + goto err; + + ret = of_address_to_resource(np, 0, &mem); + if (ret) + goto err; + + ret = of_irq_to_resource(np, 0, &irq); + if (!ret) { + ret = -EINVAL; + goto err; + } + + master = fsl_espi_probe(dev, &mem, irq.start); + if (IS_ERR(master)) { + ret = PTR_ERR(master); + goto err; + } + + return 0; + +err: + return ret; +} + +static int __devexit of_fsl_espi_remove(struct platform_device *dev) +{ + return mpc8xxx_spi_remove(&dev->dev); +} + +static const struct of_device_id of_fsl_espi_match[] = { + { .compatible = "fsl,mpc8536-espi" }, + {} +}; +MODULE_DEVICE_TABLE(of, of_fsl_espi_match); + +static struct of_platform_driver fsl_espi_driver = { + .driver = { + .name = "fsl_espi", + .owner = THIS_MODULE, + .of_match_table = of_fsl_espi_match, + }, + .probe = of_fsl_espi_probe, + .remove = __devexit_p(of_fsl_espi_remove), +}; + +static int __init fsl_espi_init(void) +{ + return of_register_platform_driver(&fsl_espi_driver); +} +module_init(fsl_espi_init); + +static void __exit fsl_espi_exit(void) +{ + of_unregister_platform_driver(&fsl_espi_driver); +} +module_exit(fsl_espi_exit); + +MODULE_AUTHOR("Mingkai Hu"); +MODULE_DESCRIPTION("Enhanced Freescale SPI Driver"); +MODULE_LICENSE("GPL"); diff --git a/drivers/spi/spi_fsl_lib.c b/drivers/spi/spi_fsl_lib.c new file mode 100644 index 000000000000..5cd741fdb5c3 --- /dev/null +++ b/drivers/spi/spi_fsl_lib.c @@ -0,0 +1,237 @@ +/* + * Freescale SPI/eSPI controller driver library. + * + * Maintainer: Kumar Gala + * + * Copyright (C) 2006 Polycom, Inc. + * + * CPM SPI and QE buffer descriptors mode support: + * Copyright (c) 2009 MontaVista Software, Inc. + * Author: Anton Vorontsov <avorontsov@ru.mvista.com> + * + * Copyright 2010 Freescale Semiconductor, Inc. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + */ +#include <linux/kernel.h> +#include <linux/interrupt.h> +#include <linux/fsl_devices.h> +#include <linux/dma-mapping.h> +#include <linux/mm.h> +#include <linux/of_platform.h> +#include <linux/of_spi.h> +#include <sysdev/fsl_soc.h> + +#include "spi_fsl_lib.h" + +#define MPC8XXX_SPI_RX_BUF(type) \ +void mpc8xxx_spi_rx_buf_##type(u32 data, struct mpc8xxx_spi *mpc8xxx_spi) \ +{ \ + type *rx = mpc8xxx_spi->rx; \ + *rx++ = (type)(data >> mpc8xxx_spi->rx_shift); \ + mpc8xxx_spi->rx = rx; \ +} + +#define MPC8XXX_SPI_TX_BUF(type) \ +u32 mpc8xxx_spi_tx_buf_##type(struct mpc8xxx_spi *mpc8xxx_spi) \ +{ \ + u32 data; \ + const type *tx = mpc8xxx_spi->tx; \ + if (!tx) \ + return 0; \ + data = *tx++ << mpc8xxx_spi->tx_shift; \ + mpc8xxx_spi->tx = tx; \ + return data; \ +} + +MPC8XXX_SPI_RX_BUF(u8) +MPC8XXX_SPI_RX_BUF(u16) +MPC8XXX_SPI_RX_BUF(u32) +MPC8XXX_SPI_TX_BUF(u8) +MPC8XXX_SPI_TX_BUF(u16) +MPC8XXX_SPI_TX_BUF(u32) + +struct mpc8xxx_spi_probe_info *to_of_pinfo(struct fsl_spi_platform_data *pdata) +{ + return container_of(pdata, struct mpc8xxx_spi_probe_info, pdata); +} + +void mpc8xxx_spi_work(struct work_struct *work) +{ + struct mpc8xxx_spi *mpc8xxx_spi = container_of(work, struct mpc8xxx_spi, + work); + + spin_lock_irq(&mpc8xxx_spi->lock); + while (!list_empty(&mpc8xxx_spi->queue)) { + struct spi_message *m = container_of(mpc8xxx_spi->queue.next, + struct spi_message, queue); + + list_del_init(&m->queue); + spin_unlock_irq(&mpc8xxx_spi->lock); + + if (mpc8xxx_spi->spi_do_one_msg) + mpc8xxx_spi->spi_do_one_msg(m); + + spin_lock_irq(&mpc8xxx_spi->lock); + } + spin_unlock_irq(&mpc8xxx_spi->lock); +} + +int mpc8xxx_spi_transfer(struct spi_device *spi, + struct spi_message *m) +{ + struct mpc8xxx_spi *mpc8xxx_spi = spi_master_get_devdata(spi->master); + unsigned long flags; + + m->actual_length = 0; + m->status = -EINPROGRESS; + + spin_lock_irqsave(&mpc8xxx_spi->lock, flags); + list_add_tail(&m->queue, &mpc8xxx_spi->queue); + queue_work(mpc8xxx_spi->workqueue, &mpc8xxx_spi->work); + spin_unlock_irqrestore(&mpc8xxx_spi->lock, flags); + + return 0; +} + +void mpc8xxx_spi_cleanup(struct spi_device *spi) +{ + kfree(spi->controller_state); +} + +const char *mpc8xxx_spi_strmode(unsigned int flags) +{ + if (flags & SPI_QE_CPU_MODE) { + return "QE CPU"; + } else if (flags & SPI_CPM_MODE) { + if (flags & SPI_QE) + return "QE"; + else if (flags & SPI_CPM2) + return "CPM2"; + else + return "CPM1"; + } + return "CPU"; +} + +int mpc8xxx_spi_probe(struct device *dev, struct resource *mem, + unsigned int irq) +{ + struct fsl_spi_platform_data *pdata = dev->platform_data; + struct spi_master *master; + struct mpc8xxx_spi *mpc8xxx_spi; + int ret = 0; + + master = dev_get_drvdata(dev); + + /* the spi->mode bits understood by this driver: */ + master->mode_bits = SPI_CPOL | SPI_CPHA | SPI_CS_HIGH + | SPI_LSB_FIRST | SPI_LOOP; + + master->transfer = mpc8xxx_spi_transfer; + master->cleanup = mpc8xxx_spi_cleanup; + master->dev.of_node = dev->of_node; + + mpc8xxx_spi = spi_master_get_devdata(master); + mpc8xxx_spi->dev = dev; + mpc8xxx_spi->get_rx = mpc8xxx_spi_rx_buf_u8; + mpc8xxx_spi->get_tx = mpc8xxx_spi_tx_buf_u8; + mpc8xxx_spi->flags = pdata->flags; + mpc8xxx_spi->spibrg = pdata->sysclk; + mpc8xxx_spi->irq = irq; + + mpc8xxx_spi->rx_shift = 0; + mpc8xxx_spi->tx_shift = 0; + + init_completion(&mpc8xxx_spi->done); + + master->bus_num = pdata->bus_num; + master->num_chipselect = pdata->max_chipselect; + + spin_lock_init(&mpc8xxx_spi->lock); + init_completion(&mpc8xxx_spi->done); + INIT_WORK(&mpc8xxx_spi->work, mpc8xxx_spi_work); + INIT_LIST_HEAD(&mpc8xxx_spi->queue); + + mpc8xxx_spi->workqueue = create_singlethread_workqueue( + dev_name(master->dev.parent)); + if (mpc8xxx_spi->workqueue == NULL) { + ret = -EBUSY; + goto err; + } + + return 0; + +err: + return ret; +} + +int __devexit mpc8xxx_spi_remove(struct device *dev) +{ + struct mpc8xxx_spi *mpc8xxx_spi; + struct spi_master *master; + + master = dev_get_drvdata(dev); + mpc8xxx_spi = spi_master_get_devdata(master); + + flush_workqueue(mpc8xxx_spi->workqueue); + destroy_workqueue(mpc8xxx_spi->workqueue); + spi_unregister_master(master); + + free_irq(mpc8xxx_spi->irq, mpc8xxx_spi); + + if (mpc8xxx_spi->spi_remove) + mpc8xxx_spi->spi_remove(mpc8xxx_spi); + + return 0; +} + +int __devinit of_mpc8xxx_spi_probe(struct platform_device *ofdev, + const struct of_device_id *ofid) +{ + struct device *dev = &ofdev->dev; + struct device_node *np = ofdev->dev.of_node; + struct mpc8xxx_spi_probe_info *pinfo; + struct fsl_spi_platform_data *pdata; + const void *prop; + int ret = -ENOMEM; + + pinfo = kzalloc(sizeof(*pinfo), GFP_KERNEL); + if (!pinfo) + return -ENOMEM; + + pdata = &pinfo->pdata; + dev->platform_data = pdata; + + /* Allocate bus num dynamically. */ + pdata->bus_num = -1; + + /* SPI controller is either clocked from QE or SoC clock. */ + pdata->sysclk = get_brgfreq(); + if (pdata->sysclk == -1) { + pdata->sysclk = fsl_get_sys_freq(); + if (pdata->sysclk == -1) { + ret = -ENODEV; + goto err; + } + } + + prop = of_get_property(np, "mode", NULL); + if (prop && !strcmp(prop, "cpu-qe")) + pdata->flags = SPI_QE_CPU_MODE; + else if (prop && !strcmp(prop, "qe")) + pdata->flags = SPI_CPM_MODE | SPI_QE; + else if (of_device_is_compatible(np, "fsl,cpm2-spi")) + pdata->flags = SPI_CPM_MODE | SPI_CPM2; + else if (of_device_is_compatible(np, "fsl,cpm1-spi")) + pdata->flags = SPI_CPM_MODE | SPI_CPM1; + + return 0; + +err: + kfree(pinfo); + return ret; +} diff --git a/drivers/spi/spi_fsl_lib.h b/drivers/spi/spi_fsl_lib.h new file mode 100644 index 000000000000..281e060977cd --- /dev/null +++ b/drivers/spi/spi_fsl_lib.h @@ -0,0 +1,124 @@ +/* + * Freescale SPI/eSPI controller driver library. + * + * Maintainer: Kumar Gala + * + * Copyright 2010 Freescale Semiconductor, Inc. + * Copyright (C) 2006 Polycom, Inc. + * + * CPM SPI and QE buffer descriptors mode support: + * Copyright (c) 2009 MontaVista Software, Inc. + * Author: Anton Vorontsov <avorontsov@ru.mvista.com> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + */ +#ifndef __SPI_FSL_LIB_H__ +#define __SPI_FSL_LIB_H__ + +#include <asm/io.h> + +/* SPI/eSPI Controller driver's private data. */ +struct mpc8xxx_spi { + struct device *dev; + void *reg_base; + + /* rx & tx bufs from the spi_transfer */ + const void *tx; + void *rx; +#ifdef CONFIG_SPI_FSL_ESPI + int len; +#endif + + int subblock; + struct spi_pram __iomem *pram; + struct cpm_buf_desc __iomem *tx_bd; + struct cpm_buf_desc __iomem *rx_bd; + + struct spi_transfer *xfer_in_progress; + + /* dma addresses for CPM transfers */ + dma_addr_t tx_dma; + dma_addr_t rx_dma; + bool map_tx_dma; + bool map_rx_dma; + + dma_addr_t dma_dummy_tx; + dma_addr_t dma_dummy_rx; + + /* functions to deal with different sized buffers */ + void (*get_rx) (u32 rx_data, struct mpc8xxx_spi *); + u32(*get_tx) (struct mpc8xxx_spi *); + + /* hooks for different controller driver */ + void (*spi_do_one_msg) (struct spi_message *m); + void (*spi_remove) (struct mpc8xxx_spi *mspi); + + unsigned int count; + unsigned int irq; + + unsigned nsecs; /* (clock cycle time)/2 */ + + u32 spibrg; /* SPIBRG input clock */ + u32 rx_shift; /* RX data reg shift when in qe mode */ + u32 tx_shift; /* TX data reg shift when in qe mode */ + + unsigned int flags; + + struct workqueue_struct *workqueue; + struct work_struct work; + + struct list_head queue; + spinlock_t lock; + + struct completion done; +}; + +struct spi_mpc8xxx_cs { + /* functions to deal with different sized buffers */ + void (*get_rx) (u32 rx_data, struct mpc8xxx_spi *); + u32 (*get_tx) (struct mpc8xxx_spi *); + u32 rx_shift; /* RX data reg shift when in qe mode */ + u32 tx_shift; /* TX data reg shift when in qe mode */ + u32 hw_mode; /* Holds HW mode register settings */ +}; + +static inline void mpc8xxx_spi_write_reg(__be32 __iomem *reg, u32 val) +{ + out_be32(reg, val); +} + +static inline u32 mpc8xxx_spi_read_reg(__be32 __iomem *reg) +{ + return in_be32(reg); +} + +struct mpc8xxx_spi_probe_info { + struct fsl_spi_platform_data pdata; + int *gpios; + bool *alow_flags; +}; + +extern u32 mpc8xxx_spi_tx_buf_u8(struct mpc8xxx_spi *mpc8xxx_spi); +extern u32 mpc8xxx_spi_tx_buf_u16(struct mpc8xxx_spi *mpc8xxx_spi); +extern u32 mpc8xxx_spi_tx_buf_u32(struct mpc8xxx_spi *mpc8xxx_spi); +extern void mpc8xxx_spi_rx_buf_u8(u32 data, struct mpc8xxx_spi *mpc8xxx_spi); +extern void mpc8xxx_spi_rx_buf_u16(u32 data, struct mpc8xxx_spi *mpc8xxx_spi); +extern void mpc8xxx_spi_rx_buf_u32(u32 data, struct mpc8xxx_spi *mpc8xxx_spi); + +extern struct mpc8xxx_spi_probe_info *to_of_pinfo( + struct fsl_spi_platform_data *pdata); +extern int mpc8xxx_spi_bufs(struct mpc8xxx_spi *mspi, + struct spi_transfer *t, unsigned int len); +extern int mpc8xxx_spi_transfer(struct spi_device *spi, struct spi_message *m); +extern void mpc8xxx_spi_cleanup(struct spi_device *spi); +extern const char *mpc8xxx_spi_strmode(unsigned int flags); +extern int mpc8xxx_spi_probe(struct device *dev, struct resource *mem, + unsigned int irq); +extern int mpc8xxx_spi_remove(struct device *dev); +extern int of_mpc8xxx_spi_probe(struct platform_device *ofdev, + const struct of_device_id *ofid); + +#endif /* __SPI_FSL_LIB_H__ */ diff --git a/drivers/spi/spi_mpc8xxx.c b/drivers/spi/spi_fsl_spi.c index 1dd86b835cd8..7ca52d3ae8f8 100644 --- a/drivers/spi/spi_mpc8xxx.c +++ b/drivers/spi/spi_fsl_spi.c @@ -1,9 +1,10 @@ /* - * MPC8xxx SPI controller driver. + * Freescale SPI controller driver. * * Maintainer: Kumar Gala * * Copyright (C) 2006 Polycom, Inc. + * Copyright 2010 Freescale Semiconductor, Inc. * * CPM SPI and QE buffer descriptors mode support: * Copyright (c) 2009 MontaVista Software, Inc. @@ -15,18 +16,11 @@ * option) any later version. */ #include <linux/module.h> -#include <linux/init.h> #include <linux/types.h> #include <linux/kernel.h> -#include <linux/bug.h> -#include <linux/errno.h> -#include <linux/err.h> -#include <linux/io.h> -#include <linux/completion.h> #include <linux/interrupt.h> #include <linux/delay.h> #include <linux/irq.h> -#include <linux/device.h> #include <linux/spi/spi.h> #include <linux/spi/spi_bitbang.h> #include <linux/platform_device.h> @@ -38,12 +32,12 @@ #include <linux/of_platform.h> #include <linux/gpio.h> #include <linux/of_gpio.h> -#include <linux/slab.h> #include <sysdev/fsl_soc.h> #include <asm/cpm.h> #include <asm/qe.h> -#include <asm/irq.h> + +#include "spi_fsl_lib.h" /* CPM1 and CPM2 are mutually exclusive. */ #ifdef CONFIG_CPM1 @@ -55,7 +49,7 @@ #endif /* SPI Controller registers */ -struct mpc8xxx_spi_reg { +struct fsl_spi_reg { u8 res1[0x20]; __be32 mode; __be32 event; @@ -80,7 +74,7 @@ struct mpc8xxx_spi_reg { /* * Default for SPI Mode: - * SPI MODE 0 (inactive low, phase middle, MSB, 8-bit length, slow clk + * SPI MODE 0 (inactive low, phase middle, MSB, 8-bit length, slow clk */ #define SPMODE_INIT_VAL (SPMODE_CI_INACTIVEHIGH | SPMODE_DIV16 | SPMODE_REV | \ SPMODE_MS | SPMODE_LEN(7) | SPMODE_PM(0xf)) @@ -102,112 +96,16 @@ struct mpc8xxx_spi_reg { #define SPI_PRAM_SIZE 0x100 #define SPI_MRBLR ((unsigned int)PAGE_SIZE) -/* SPI Controller driver's private data. */ -struct mpc8xxx_spi { - struct device *dev; - struct mpc8xxx_spi_reg __iomem *base; - - /* rx & tx bufs from the spi_transfer */ - const void *tx; - void *rx; - - int subblock; - struct spi_pram __iomem *pram; - struct cpm_buf_desc __iomem *tx_bd; - struct cpm_buf_desc __iomem *rx_bd; - - struct spi_transfer *xfer_in_progress; - - /* dma addresses for CPM transfers */ - dma_addr_t tx_dma; - dma_addr_t rx_dma; - bool map_tx_dma; - bool map_rx_dma; - - dma_addr_t dma_dummy_tx; - dma_addr_t dma_dummy_rx; - - /* functions to deal with different sized buffers */ - void (*get_rx) (u32 rx_data, struct mpc8xxx_spi *); - u32(*get_tx) (struct mpc8xxx_spi *); - - unsigned int count; - unsigned int irq; - - unsigned nsecs; /* (clock cycle time)/2 */ - - u32 spibrg; /* SPIBRG input clock */ - u32 rx_shift; /* RX data reg shift when in qe mode */ - u32 tx_shift; /* TX data reg shift when in qe mode */ - - unsigned int flags; - - struct workqueue_struct *workqueue; - struct work_struct work; - - struct list_head queue; - spinlock_t lock; - - struct completion done; -}; - -static void *mpc8xxx_dummy_rx; -static DEFINE_MUTEX(mpc8xxx_dummy_rx_lock); -static int mpc8xxx_dummy_rx_refcnt; - -struct spi_mpc8xxx_cs { - /* functions to deal with different sized buffers */ - void (*get_rx) (u32 rx_data, struct mpc8xxx_spi *); - u32 (*get_tx) (struct mpc8xxx_spi *); - u32 rx_shift; /* RX data reg shift when in qe mode */ - u32 tx_shift; /* TX data reg shift when in qe mode */ - u32 hw_mode; /* Holds HW mode register settings */ -}; - -static inline void mpc8xxx_spi_write_reg(__be32 __iomem *reg, u32 val) -{ - out_be32(reg, val); -} - -static inline u32 mpc8xxx_spi_read_reg(__be32 __iomem *reg) -{ - return in_be32(reg); -} - -#define MPC83XX_SPI_RX_BUF(type) \ -static \ -void mpc8xxx_spi_rx_buf_##type(u32 data, struct mpc8xxx_spi *mpc8xxx_spi) \ -{ \ - type *rx = mpc8xxx_spi->rx; \ - *rx++ = (type)(data >> mpc8xxx_spi->rx_shift); \ - mpc8xxx_spi->rx = rx; \ -} - -#define MPC83XX_SPI_TX_BUF(type) \ -static \ -u32 mpc8xxx_spi_tx_buf_##type(struct mpc8xxx_spi *mpc8xxx_spi) \ -{ \ - u32 data; \ - const type *tx = mpc8xxx_spi->tx; \ - if (!tx) \ - return 0; \ - data = *tx++ << mpc8xxx_spi->tx_shift; \ - mpc8xxx_spi->tx = tx; \ - return data; \ -} +static void *fsl_dummy_rx; +static DEFINE_MUTEX(fsl_dummy_rx_lock); +static int fsl_dummy_rx_refcnt; -MPC83XX_SPI_RX_BUF(u8) -MPC83XX_SPI_RX_BUF(u16) -MPC83XX_SPI_RX_BUF(u32) -MPC83XX_SPI_TX_BUF(u8) -MPC83XX_SPI_TX_BUF(u16) -MPC83XX_SPI_TX_BUF(u32) - -static void mpc8xxx_spi_change_mode(struct spi_device *spi) +static void fsl_spi_change_mode(struct spi_device *spi) { struct mpc8xxx_spi *mspi = spi_master_get_devdata(spi->master); struct spi_mpc8xxx_cs *cs = spi->controller_state; - __be32 __iomem *mode = &mspi->base->mode; + struct fsl_spi_reg *reg_base = mspi->reg_base; + __be32 __iomem *mode = ®_base->mode; unsigned long flags; if (cs->hw_mode == mpc8xxx_spi_read_reg(mode)) @@ -238,7 +136,7 @@ static void mpc8xxx_spi_change_mode(struct spi_device *spi) local_irq_restore(flags); } -static void mpc8xxx_spi_chipselect(struct spi_device *spi, int value) +static void fsl_spi_chipselect(struct spi_device *spi, int value) { struct mpc8xxx_spi *mpc8xxx_spi = spi_master_get_devdata(spi->master); struct fsl_spi_platform_data *pdata = spi->dev.parent->platform_data; @@ -256,18 +154,17 @@ static void mpc8xxx_spi_chipselect(struct spi_device *spi, int value) mpc8xxx_spi->get_rx = cs->get_rx; mpc8xxx_spi->get_tx = cs->get_tx; - mpc8xxx_spi_change_mode(spi); + fsl_spi_change_mode(spi); if (pdata->cs_control) pdata->cs_control(spi, pol); } } -static int -mspi_apply_cpu_mode_quirks(struct spi_mpc8xxx_cs *cs, - struct spi_device *spi, - struct mpc8xxx_spi *mpc8xxx_spi, - int bits_per_word) +static int mspi_apply_cpu_mode_quirks(struct spi_mpc8xxx_cs *cs, + struct spi_device *spi, + struct mpc8xxx_spi *mpc8xxx_spi, + int bits_per_word) { cs->rx_shift = 0; cs->tx_shift = 0; @@ -307,10 +204,9 @@ mspi_apply_cpu_mode_quirks(struct spi_mpc8xxx_cs *cs, return bits_per_word; } -static int -mspi_apply_qe_mode_quirks(struct spi_mpc8xxx_cs *cs, - struct spi_device *spi, - int bits_per_word) +static int mspi_apply_qe_mode_quirks(struct spi_mpc8xxx_cs *cs, + struct spi_device *spi, + int bits_per_word) { /* QE uses Little Endian for words > 8 * so transform all words > 8 into 8 bits @@ -326,13 +222,13 @@ mspi_apply_qe_mode_quirks(struct spi_mpc8xxx_cs *cs, return bits_per_word; } -static -int mpc8xxx_spi_setup_transfer(struct spi_device *spi, struct spi_transfer *t) +static int fsl_spi_setup_transfer(struct spi_device *spi, + struct spi_transfer *t) { struct mpc8xxx_spi *mpc8xxx_spi; - int bits_per_word; + int bits_per_word = 0; u8 pm; - u32 hz; + u32 hz = 0; struct spi_mpc8xxx_cs *cs = spi->controller_state; mpc8xxx_spi = spi_master_get_devdata(spi->master); @@ -340,9 +236,6 @@ int mpc8xxx_spi_setup_transfer(struct spi_device *spi, struct spi_transfer *t) if (t) { bits_per_word = t->bits_per_word; hz = t->speed_hz; - } else { - bits_per_word = 0; - hz = 0; } /* spi_transfer level calls that work per-word */ @@ -388,23 +281,25 @@ int mpc8xxx_spi_setup_transfer(struct spi_device *spi, struct spi_transfer *t) hz, mpc8xxx_spi->spibrg / 1024); if (pm > 16) pm = 16; - } else + } else { pm = (mpc8xxx_spi->spibrg - 1) / (hz * 4) + 1; + } if (pm) pm--; cs->hw_mode |= SPMODE_PM(pm); - mpc8xxx_spi_change_mode(spi); + fsl_spi_change_mode(spi); return 0; } -static void mpc8xxx_spi_cpm_bufs_start(struct mpc8xxx_spi *mspi) +static void fsl_spi_cpm_bufs_start(struct mpc8xxx_spi *mspi) { struct cpm_buf_desc __iomem *tx_bd = mspi->tx_bd; struct cpm_buf_desc __iomem *rx_bd = mspi->rx_bd; unsigned int xfer_len = min(mspi->count, SPI_MRBLR); unsigned int xfer_ofs; + struct fsl_spi_reg *reg_base = mspi->reg_base; xfer_ofs = mspi->xfer_in_progress->len - mspi->count; @@ -424,13 +319,14 @@ static void mpc8xxx_spi_cpm_bufs_start(struct mpc8xxx_spi *mspi) BD_SC_LAST); /* start transfer */ - mpc8xxx_spi_write_reg(&mspi->base->command, SPCOM_STR); + mpc8xxx_spi_write_reg(®_base->command, SPCOM_STR); } -static int mpc8xxx_spi_cpm_bufs(struct mpc8xxx_spi *mspi, +static int fsl_spi_cpm_bufs(struct mpc8xxx_spi *mspi, struct spi_transfer *t, bool is_dma_mapped) { struct device *dev = mspi->dev; + struct fsl_spi_reg *reg_base = mspi->reg_base; if (is_dma_mapped) { mspi->map_tx_dma = 0; @@ -475,13 +371,13 @@ static int mpc8xxx_spi_cpm_bufs(struct mpc8xxx_spi *mspi, } /* enable rx ints */ - mpc8xxx_spi_write_reg(&mspi->base->mask, SPIE_RXB); + mpc8xxx_spi_write_reg(®_base->mask, SPIE_RXB); mspi->xfer_in_progress = t; mspi->count = t->len; /* start CPM transfers */ - mpc8xxx_spi_cpm_bufs_start(mspi); + fsl_spi_cpm_bufs_start(mspi); return 0; @@ -491,7 +387,7 @@ err_rx_dma: return -ENOMEM; } -static void mpc8xxx_spi_cpm_bufs_complete(struct mpc8xxx_spi *mspi) +static void fsl_spi_cpm_bufs_complete(struct mpc8xxx_spi *mspi) { struct device *dev = mspi->dev; struct spi_transfer *t = mspi->xfer_in_progress; @@ -503,31 +399,34 @@ static void mpc8xxx_spi_cpm_bufs_complete(struct mpc8xxx_spi *mspi) mspi->xfer_in_progress = NULL; } -static int mpc8xxx_spi_cpu_bufs(struct mpc8xxx_spi *mspi, +static int fsl_spi_cpu_bufs(struct mpc8xxx_spi *mspi, struct spi_transfer *t, unsigned int len) { u32 word; + struct fsl_spi_reg *reg_base = mspi->reg_base; mspi->count = len; /* enable rx ints */ - mpc8xxx_spi_write_reg(&mspi->base->mask, SPIM_NE); + mpc8xxx_spi_write_reg(®_base->mask, SPIM_NE); /* transmit word */ word = mspi->get_tx(mspi); - mpc8xxx_spi_write_reg(&mspi->base->transmit, word); + mpc8xxx_spi_write_reg(®_base->transmit, word); return 0; } -static int mpc8xxx_spi_bufs(struct spi_device *spi, struct spi_transfer *t, +static int fsl_spi_bufs(struct spi_device *spi, struct spi_transfer *t, bool is_dma_mapped) { struct mpc8xxx_spi *mpc8xxx_spi = spi_master_get_devdata(spi->master); + struct fsl_spi_reg *reg_base; unsigned int len = t->len; u8 bits_per_word; int ret; + reg_base = mpc8xxx_spi->reg_base; bits_per_word = spi->bits_per_word; if (t->bits_per_word) bits_per_word = t->bits_per_word; @@ -551,24 +450,24 @@ static int mpc8xxx_spi_bufs(struct spi_device *spi, struct spi_transfer *t, INIT_COMPLETION(mpc8xxx_spi->done); if (mpc8xxx_spi->flags & SPI_CPM_MODE) - ret = mpc8xxx_spi_cpm_bufs(mpc8xxx_spi, t, is_dma_mapped); + ret = fsl_spi_cpm_bufs(mpc8xxx_spi, t, is_dma_mapped); else - ret = mpc8xxx_spi_cpu_bufs(mpc8xxx_spi, t, len); + ret = fsl_spi_cpu_bufs(mpc8xxx_spi, t, len); if (ret) return ret; wait_for_completion(&mpc8xxx_spi->done); /* disable rx ints */ - mpc8xxx_spi_write_reg(&mpc8xxx_spi->base->mask, 0); + mpc8xxx_spi_write_reg(®_base->mask, 0); if (mpc8xxx_spi->flags & SPI_CPM_MODE) - mpc8xxx_spi_cpm_bufs_complete(mpc8xxx_spi); + fsl_spi_cpm_bufs_complete(mpc8xxx_spi); return mpc8xxx_spi->count; } -static void mpc8xxx_spi_do_one_msg(struct spi_message *m) +static void fsl_spi_do_one_msg(struct spi_message *m) { struct spi_device *spi = m->spi; struct spi_transfer *t; @@ -584,18 +483,18 @@ static void mpc8xxx_spi_do_one_msg(struct spi_message *m) status = -EINVAL; if (cs_change) - status = mpc8xxx_spi_setup_transfer(spi, t); + status = fsl_spi_setup_transfer(spi, t); if (status < 0) break; } if (cs_change) { - mpc8xxx_spi_chipselect(spi, BITBANG_CS_ACTIVE); + fsl_spi_chipselect(spi, BITBANG_CS_ACTIVE); ndelay(nsecs); } cs_change = t->cs_change; if (t->len) - status = mpc8xxx_spi_bufs(spi, t, m->is_dma_mapped); + status = fsl_spi_bufs(spi, t, m->is_dma_mapped); if (status) { status = -EMSGSIZE; break; @@ -607,7 +506,7 @@ static void mpc8xxx_spi_do_one_msg(struct spi_message *m) if (cs_change) { ndelay(nsecs); - mpc8xxx_spi_chipselect(spi, BITBANG_CS_INACTIVE); + fsl_spi_chipselect(spi, BITBANG_CS_INACTIVE); ndelay(nsecs); } } @@ -617,35 +516,16 @@ static void mpc8xxx_spi_do_one_msg(struct spi_message *m) if (status || !cs_change) { ndelay(nsecs); - mpc8xxx_spi_chipselect(spi, BITBANG_CS_INACTIVE); + fsl_spi_chipselect(spi, BITBANG_CS_INACTIVE); } - mpc8xxx_spi_setup_transfer(spi, NULL); -} - -static void mpc8xxx_spi_work(struct work_struct *work) -{ - struct mpc8xxx_spi *mpc8xxx_spi = container_of(work, struct mpc8xxx_spi, - work); - - spin_lock_irq(&mpc8xxx_spi->lock); - while (!list_empty(&mpc8xxx_spi->queue)) { - struct spi_message *m = container_of(mpc8xxx_spi->queue.next, - struct spi_message, queue); - - list_del_init(&m->queue); - spin_unlock_irq(&mpc8xxx_spi->lock); - - mpc8xxx_spi_do_one_msg(m); - - spin_lock_irq(&mpc8xxx_spi->lock); - } - spin_unlock_irq(&mpc8xxx_spi->lock); + fsl_spi_setup_transfer(spi, NULL); } -static int mpc8xxx_spi_setup(struct spi_device *spi) +static int fsl_spi_setup(struct spi_device *spi) { struct mpc8xxx_spi *mpc8xxx_spi; + struct fsl_spi_reg *reg_base; int retval; u32 hw_mode; struct spi_mpc8xxx_cs *cs = spi->controller_state; @@ -661,8 +541,10 @@ static int mpc8xxx_spi_setup(struct spi_device *spi) } mpc8xxx_spi = spi_master_get_devdata(spi->master); + reg_base = mpc8xxx_spi->reg_base; + hw_mode = cs->hw_mode; /* Save original settings */ - cs->hw_mode = mpc8xxx_spi_read_reg(&mpc8xxx_spi->base->mode); + cs->hw_mode = mpc8xxx_spi_read_reg(®_base->mode); /* mask out bits we are going to set */ cs->hw_mode &= ~(SPMODE_CP_BEGIN_EDGECLK | SPMODE_CI_INACTIVEHIGH | SPMODE_REV | SPMODE_LOOP); @@ -676,7 +558,7 @@ static int mpc8xxx_spi_setup(struct spi_device *spi) if (spi->mode & SPI_LOOP) cs->hw_mode |= SPMODE_LOOP; - retval = mpc8xxx_spi_setup_transfer(spi, NULL); + retval = fsl_spi_setup_transfer(spi, NULL); if (retval < 0) { cs->hw_mode = hw_mode; /* Restore settings */ return retval; @@ -684,9 +566,10 @@ static int mpc8xxx_spi_setup(struct spi_device *spi) return 0; } -static void mpc8xxx_spi_cpm_irq(struct mpc8xxx_spi *mspi, u32 events) +static void fsl_spi_cpm_irq(struct mpc8xxx_spi *mspi, u32 events) { u16 len; + struct fsl_spi_reg *reg_base = mspi->reg_base; dev_dbg(mspi->dev, "%s: bd datlen %d, count %d\n", __func__, in_be16(&mspi->rx_bd->cbd_datlen), mspi->count); @@ -698,20 +581,22 @@ static void mpc8xxx_spi_cpm_irq(struct mpc8xxx_spi *mspi, u32 events) } /* Clear the events */ - mpc8xxx_spi_write_reg(&mspi->base->event, events); + mpc8xxx_spi_write_reg(®_base->event, events); mspi->count -= len; if (mspi->count) - mpc8xxx_spi_cpm_bufs_start(mspi); + fsl_spi_cpm_bufs_start(mspi); else complete(&mspi->done); } -static void mpc8xxx_spi_cpu_irq(struct mpc8xxx_spi *mspi, u32 events) +static void fsl_spi_cpu_irq(struct mpc8xxx_spi *mspi, u32 events) { + struct fsl_spi_reg *reg_base = mspi->reg_base; + /* We need handle RX first */ if (events & SPIE_NE) { - u32 rx_data = mpc8xxx_spi_read_reg(&mspi->base->receive); + u32 rx_data = mpc8xxx_spi_read_reg(®_base->receive); if (mspi->rx) mspi->get_rx(rx_data, mspi); @@ -720,102 +605,80 @@ static void mpc8xxx_spi_cpu_irq(struct mpc8xxx_spi *mspi, u32 events) if ((events & SPIE_NF) == 0) /* spin until TX is done */ while (((events = - mpc8xxx_spi_read_reg(&mspi->base->event)) & + mpc8xxx_spi_read_reg(®_base->event)) & SPIE_NF) == 0) cpu_relax(); /* Clear the events */ - mpc8xxx_spi_write_reg(&mspi->base->event, events); + mpc8xxx_spi_write_reg(®_base->event, events); mspi->count -= 1; if (mspi->count) { u32 word = mspi->get_tx(mspi); - mpc8xxx_spi_write_reg(&mspi->base->transmit, word); + mpc8xxx_spi_write_reg(®_base->transmit, word); } else { complete(&mspi->done); } } -static irqreturn_t mpc8xxx_spi_irq(s32 irq, void *context_data) +static irqreturn_t fsl_spi_irq(s32 irq, void *context_data) { struct mpc8xxx_spi *mspi = context_data; irqreturn_t ret = IRQ_NONE; u32 events; + struct fsl_spi_reg *reg_base = mspi->reg_base; /* Get interrupt events(tx/rx) */ - events = mpc8xxx_spi_read_reg(&mspi->base->event); + events = mpc8xxx_spi_read_reg(®_base->event); if (events) ret = IRQ_HANDLED; dev_dbg(mspi->dev, "%s: events %x\n", __func__, events); if (mspi->flags & SPI_CPM_MODE) - mpc8xxx_spi_cpm_irq(mspi, events); + fsl_spi_cpm_irq(mspi, events); else - mpc8xxx_spi_cpu_irq(mspi, events); + fsl_spi_cpu_irq(mspi, events); return ret; } -static int mpc8xxx_spi_transfer(struct spi_device *spi, - struct spi_message *m) +static void *fsl_spi_alloc_dummy_rx(void) { - struct mpc8xxx_spi *mpc8xxx_spi = spi_master_get_devdata(spi->master); - unsigned long flags; + mutex_lock(&fsl_dummy_rx_lock); - m->actual_length = 0; - m->status = -EINPROGRESS; + if (!fsl_dummy_rx) + fsl_dummy_rx = kmalloc(SPI_MRBLR, GFP_KERNEL); + if (fsl_dummy_rx) + fsl_dummy_rx_refcnt++; - spin_lock_irqsave(&mpc8xxx_spi->lock, flags); - list_add_tail(&m->queue, &mpc8xxx_spi->queue); - queue_work(mpc8xxx_spi->workqueue, &mpc8xxx_spi->work); - spin_unlock_irqrestore(&mpc8xxx_spi->lock, flags); + mutex_unlock(&fsl_dummy_rx_lock); - return 0; + return fsl_dummy_rx; } - -static void mpc8xxx_spi_cleanup(struct spi_device *spi) +static void fsl_spi_free_dummy_rx(void) { - kfree(spi->controller_state); -} + mutex_lock(&fsl_dummy_rx_lock); -static void *mpc8xxx_spi_alloc_dummy_rx(void) -{ - mutex_lock(&mpc8xxx_dummy_rx_lock); - - if (!mpc8xxx_dummy_rx) - mpc8xxx_dummy_rx = kmalloc(SPI_MRBLR, GFP_KERNEL); - if (mpc8xxx_dummy_rx) - mpc8xxx_dummy_rx_refcnt++; - - mutex_unlock(&mpc8xxx_dummy_rx_lock); - - return mpc8xxx_dummy_rx; -} - -static void mpc8xxx_spi_free_dummy_rx(void) -{ - mutex_lock(&mpc8xxx_dummy_rx_lock); - - switch (mpc8xxx_dummy_rx_refcnt) { + switch (fsl_dummy_rx_refcnt) { case 0: WARN_ON(1); break; case 1: - kfree(mpc8xxx_dummy_rx); - mpc8xxx_dummy_rx = NULL; + kfree(fsl_dummy_rx); + fsl_dummy_rx = NULL; /* fall through */ default: - mpc8xxx_dummy_rx_refcnt--; + fsl_dummy_rx_refcnt--; break; } - mutex_unlock(&mpc8xxx_dummy_rx_lock); + mutex_unlock(&fsl_dummy_rx_lock); } -static unsigned long mpc8xxx_spi_cpm_get_pram(struct mpc8xxx_spi *mspi) +static unsigned long fsl_spi_cpm_get_pram(struct mpc8xxx_spi *mspi) { struct device *dev = mspi->dev; struct device_node *np = dev->of_node; @@ -869,7 +732,7 @@ static unsigned long mpc8xxx_spi_cpm_get_pram(struct mpc8xxx_spi *mspi) return pram_ofs; } -static int mpc8xxx_spi_cpm_init(struct mpc8xxx_spi *mspi) +static int fsl_spi_cpm_init(struct mpc8xxx_spi *mspi) { struct device *dev = mspi->dev; struct device_node *np = dev->of_node; @@ -881,7 +744,7 @@ static int mpc8xxx_spi_cpm_init(struct mpc8xxx_spi *mspi) if (!(mspi->flags & SPI_CPM_MODE)) return 0; - if (!mpc8xxx_spi_alloc_dummy_rx()) + if (!fsl_spi_alloc_dummy_rx()) return -ENOMEM; if (mspi->flags & SPI_QE) { @@ -902,7 +765,7 @@ static int mpc8xxx_spi_cpm_init(struct mpc8xxx_spi *mspi) } } - pram_ofs = mpc8xxx_spi_cpm_get_pram(mspi); + pram_ofs = fsl_spi_cpm_get_pram(mspi); if (IS_ERR_VALUE(pram_ofs)) { dev_err(dev, "can't allocate spi parameter ram\n"); goto err_pram; @@ -922,7 +785,7 @@ static int mpc8xxx_spi_cpm_init(struct mpc8xxx_spi *mspi) goto err_dummy_tx; } - mspi->dma_dummy_rx = dma_map_single(dev, mpc8xxx_dummy_rx, SPI_MRBLR, + mspi->dma_dummy_rx = dma_map_single(dev, fsl_dummy_rx, SPI_MRBLR, DMA_FROM_DEVICE); if (dma_mapping_error(dev, mspi->dma_dummy_rx)) { dev_err(dev, "unable to map dummy rx buffer\n"); @@ -960,11 +823,11 @@ err_dummy_tx: err_bds: cpm_muram_free(pram_ofs); err_pram: - mpc8xxx_spi_free_dummy_rx(); + fsl_spi_free_dummy_rx(); return -ENOMEM; } -static void mpc8xxx_spi_cpm_free(struct mpc8xxx_spi *mspi) +static void fsl_spi_cpm_free(struct mpc8xxx_spi *mspi) { struct device *dev = mspi->dev; @@ -972,30 +835,22 @@ static void mpc8xxx_spi_cpm_free(struct mpc8xxx_spi *mspi) dma_unmap_single(dev, mspi->dma_dummy_tx, PAGE_SIZE, DMA_TO_DEVICE); cpm_muram_free(cpm_muram_offset(mspi->tx_bd)); cpm_muram_free(cpm_muram_offset(mspi->pram)); - mpc8xxx_spi_free_dummy_rx(); + fsl_spi_free_dummy_rx(); } -static const char *mpc8xxx_spi_strmode(unsigned int flags) +static void fsl_spi_remove(struct mpc8xxx_spi *mspi) { - if (flags & SPI_QE_CPU_MODE) { - return "QE CPU"; - } else if (flags & SPI_CPM_MODE) { - if (flags & SPI_QE) - return "QE"; - else if (flags & SPI_CPM2) - return "CPM2"; - else - return "CPM1"; - } - return "CPU"; + iounmap(mspi->reg_base); + fsl_spi_cpm_free(mspi); } -static struct spi_master * __devinit -mpc8xxx_spi_probe(struct device *dev, struct resource *mem, unsigned int irq) +static struct spi_master * __devinit fsl_spi_probe(struct device *dev, + struct resource *mem, unsigned int irq) { struct fsl_spi_platform_data *pdata = dev->platform_data; struct spi_master *master; struct mpc8xxx_spi *mpc8xxx_spi; + struct fsl_spi_reg *reg_base; u32 regval; int ret = 0; @@ -1007,132 +862,77 @@ mpc8xxx_spi_probe(struct device *dev, struct resource *mem, unsigned int irq) dev_set_drvdata(dev, master); - /* the spi->mode bits understood by this driver: */ - master->mode_bits = SPI_CPOL | SPI_CPHA | SPI_CS_HIGH - | SPI_LSB_FIRST | SPI_LOOP; + ret = mpc8xxx_spi_probe(dev, mem, irq); + if (ret) + goto err_probe; - master->setup = mpc8xxx_spi_setup; - master->transfer = mpc8xxx_spi_transfer; - master->cleanup = mpc8xxx_spi_cleanup; - master->dev.of_node = dev->of_node; + master->setup = fsl_spi_setup; mpc8xxx_spi = spi_master_get_devdata(master); - mpc8xxx_spi->dev = dev; - mpc8xxx_spi->get_rx = mpc8xxx_spi_rx_buf_u8; - mpc8xxx_spi->get_tx = mpc8xxx_spi_tx_buf_u8; - mpc8xxx_spi->flags = pdata->flags; - mpc8xxx_spi->spibrg = pdata->sysclk; + mpc8xxx_spi->spi_do_one_msg = fsl_spi_do_one_msg; + mpc8xxx_spi->spi_remove = fsl_spi_remove; + - ret = mpc8xxx_spi_cpm_init(mpc8xxx_spi); + ret = fsl_spi_cpm_init(mpc8xxx_spi); if (ret) goto err_cpm_init; - mpc8xxx_spi->rx_shift = 0; - mpc8xxx_spi->tx_shift = 0; if (mpc8xxx_spi->flags & SPI_QE_CPU_MODE) { mpc8xxx_spi->rx_shift = 16; mpc8xxx_spi->tx_shift = 24; } - init_completion(&mpc8xxx_spi->done); - - mpc8xxx_spi->base = ioremap(mem->start, resource_size(mem)); - if (mpc8xxx_spi->base == NULL) { + mpc8xxx_spi->reg_base = ioremap(mem->start, resource_size(mem)); + if (mpc8xxx_spi->reg_base == NULL) { ret = -ENOMEM; goto err_ioremap; } - mpc8xxx_spi->irq = irq; - /* Register for SPI Interrupt */ - ret = request_irq(mpc8xxx_spi->irq, mpc8xxx_spi_irq, - 0, "mpc8xxx_spi", mpc8xxx_spi); + ret = request_irq(mpc8xxx_spi->irq, fsl_spi_irq, + 0, "fsl_spi", mpc8xxx_spi); if (ret != 0) - goto unmap_io; + goto free_irq; - master->bus_num = pdata->bus_num; - master->num_chipselect = pdata->max_chipselect; + reg_base = mpc8xxx_spi->reg_base; /* SPI controller initializations */ - mpc8xxx_spi_write_reg(&mpc8xxx_spi->base->mode, 0); - mpc8xxx_spi_write_reg(&mpc8xxx_spi->base->mask, 0); - mpc8xxx_spi_write_reg(&mpc8xxx_spi->base->command, 0); - mpc8xxx_spi_write_reg(&mpc8xxx_spi->base->event, 0xffffffff); + mpc8xxx_spi_write_reg(®_base->mode, 0); + mpc8xxx_spi_write_reg(®_base->mask, 0); + mpc8xxx_spi_write_reg(®_base->command, 0); + mpc8xxx_spi_write_reg(®_base->event, 0xffffffff); /* Enable SPI interface */ regval = pdata->initial_spmode | SPMODE_INIT_VAL | SPMODE_ENABLE; if (mpc8xxx_spi->flags & SPI_QE_CPU_MODE) regval |= SPMODE_OP; - mpc8xxx_spi_write_reg(&mpc8xxx_spi->base->mode, regval); - spin_lock_init(&mpc8xxx_spi->lock); - init_completion(&mpc8xxx_spi->done); - INIT_WORK(&mpc8xxx_spi->work, mpc8xxx_spi_work); - INIT_LIST_HEAD(&mpc8xxx_spi->queue); - - mpc8xxx_spi->workqueue = create_singlethread_workqueue( - dev_name(master->dev.parent)); - if (mpc8xxx_spi->workqueue == NULL) { - ret = -EBUSY; - goto free_irq; - } + mpc8xxx_spi_write_reg(®_base->mode, regval); ret = spi_register_master(master); if (ret < 0) goto unreg_master; - dev_info(dev, "at 0x%p (irq = %d), %s mode\n", mpc8xxx_spi->base, + dev_info(dev, "at 0x%p (irq = %d), %s mode\n", reg_base, mpc8xxx_spi->irq, mpc8xxx_spi_strmode(mpc8xxx_spi->flags)); return master; unreg_master: - destroy_workqueue(mpc8xxx_spi->workqueue); -free_irq: free_irq(mpc8xxx_spi->irq, mpc8xxx_spi); -unmap_io: - iounmap(mpc8xxx_spi->base); +free_irq: + iounmap(mpc8xxx_spi->reg_base); err_ioremap: - mpc8xxx_spi_cpm_free(mpc8xxx_spi); + fsl_spi_cpm_free(mpc8xxx_spi); err_cpm_init: +err_probe: spi_master_put(master); err: return ERR_PTR(ret); } -static int __devexit mpc8xxx_spi_remove(struct device *dev) -{ - struct mpc8xxx_spi *mpc8xxx_spi; - struct spi_master *master; - - master = dev_get_drvdata(dev); - mpc8xxx_spi = spi_master_get_devdata(master); - - flush_workqueue(mpc8xxx_spi->workqueue); - destroy_workqueue(mpc8xxx_spi->workqueue); - spi_unregister_master(master); - - free_irq(mpc8xxx_spi->irq, mpc8xxx_spi); - iounmap(mpc8xxx_spi->base); - mpc8xxx_spi_cpm_free(mpc8xxx_spi); - - return 0; -} - -struct mpc8xxx_spi_probe_info { - struct fsl_spi_platform_data pdata; - int *gpios; - bool *alow_flags; -}; - -static struct mpc8xxx_spi_probe_info * -to_of_pinfo(struct fsl_spi_platform_data *pdata) -{ - return container_of(pdata, struct mpc8xxx_spi_probe_info, pdata); -} - -static void mpc8xxx_spi_cs_control(struct spi_device *spi, bool on) +static void fsl_spi_cs_control(struct spi_device *spi, bool on) { struct device *dev = spi->dev.parent; struct mpc8xxx_spi_probe_info *pinfo = to_of_pinfo(dev->platform_data); @@ -1143,7 +943,7 @@ static void mpc8xxx_spi_cs_control(struct spi_device *spi, bool on) gpio_set_value(gpio, on ^ alow); } -static int of_mpc8xxx_spi_get_chipselects(struct device *dev) +static int of_fsl_spi_get_chipselects(struct device *dev) { struct device_node *np = dev->of_node; struct fsl_spi_platform_data *pdata = dev->platform_data; @@ -1204,7 +1004,7 @@ static int of_mpc8xxx_spi_get_chipselects(struct device *dev) } pdata->max_chipselect = ngpios; - pdata->cs_control = mpc8xxx_spi_cs_control; + pdata->cs_control = fsl_spi_cs_control; return 0; @@ -1223,7 +1023,7 @@ err_alloc_flags: return ret; } -static int of_mpc8xxx_spi_free_chipselects(struct device *dev) +static int of_fsl_spi_free_chipselects(struct device *dev) { struct fsl_spi_platform_data *pdata = dev->platform_data; struct mpc8xxx_spi_probe_info *pinfo = to_of_pinfo(pdata); @@ -1242,50 +1042,21 @@ static int of_mpc8xxx_spi_free_chipselects(struct device *dev) return 0; } -static int __devinit of_mpc8xxx_spi_probe(struct platform_device *ofdev, - const struct of_device_id *ofid) +static int __devinit of_fsl_spi_probe(struct platform_device *ofdev, + const struct of_device_id *ofid) { struct device *dev = &ofdev->dev; struct device_node *np = ofdev->dev.of_node; - struct mpc8xxx_spi_probe_info *pinfo; - struct fsl_spi_platform_data *pdata; struct spi_master *master; struct resource mem; struct resource irq; - const void *prop; int ret = -ENOMEM; - pinfo = kzalloc(sizeof(*pinfo), GFP_KERNEL); - if (!pinfo) - return -ENOMEM; - - pdata = &pinfo->pdata; - dev->platform_data = pdata; - - /* Allocate bus num dynamically. */ - pdata->bus_num = -1; - - /* SPI controller is either clocked from QE or SoC clock. */ - pdata->sysclk = get_brgfreq(); - if (pdata->sysclk == -1) { - pdata->sysclk = fsl_get_sys_freq(); - if (pdata->sysclk == -1) { - ret = -ENODEV; - goto err_clk; - } - } + ret = of_mpc8xxx_spi_probe(ofdev, ofid); + if (ret) + return ret; - prop = of_get_property(np, "mode", NULL); - if (prop && !strcmp(prop, "cpu-qe")) - pdata->flags = SPI_QE_CPU_MODE; - else if (prop && !strcmp(prop, "qe")) - pdata->flags = SPI_CPM_MODE | SPI_QE; - else if (of_device_is_compatible(np, "fsl,cpm2-spi")) - pdata->flags = SPI_CPM_MODE | SPI_CPM2; - else if (of_device_is_compatible(np, "fsl,cpm1-spi")) - pdata->flags = SPI_CPM_MODE | SPI_CPM1; - - ret = of_mpc8xxx_spi_get_chipselects(dev); + ret = of_fsl_spi_get_chipselects(dev); if (ret) goto err; @@ -1299,7 +1070,7 @@ static int __devinit of_mpc8xxx_spi_probe(struct platform_device *ofdev, goto err; } - master = mpc8xxx_spi_probe(dev, &mem, irq.start); + master = fsl_spi_probe(dev, &mem, irq.start); if (IS_ERR(master)) { ret = PTR_ERR(master); goto err; @@ -1308,42 +1079,40 @@ static int __devinit of_mpc8xxx_spi_probe(struct platform_device *ofdev, return 0; err: - of_mpc8xxx_spi_free_chipselects(dev); -err_clk: - kfree(pinfo); + of_fsl_spi_free_chipselects(dev); return ret; } -static int __devexit of_mpc8xxx_spi_remove(struct platform_device *ofdev) +static int __devexit of_fsl_spi_remove(struct platform_device *ofdev) { int ret; ret = mpc8xxx_spi_remove(&ofdev->dev); if (ret) return ret; - of_mpc8xxx_spi_free_chipselects(&ofdev->dev); + of_fsl_spi_free_chipselects(&ofdev->dev); return 0; } -static const struct of_device_id of_mpc8xxx_spi_match[] = { +static const struct of_device_id of_fsl_spi_match[] = { { .compatible = "fsl,spi" }, - {}, + {} }; -MODULE_DEVICE_TABLE(of, of_mpc8xxx_spi_match); +MODULE_DEVICE_TABLE(of, of_fsl_spi_match); -static struct of_platform_driver of_mpc8xxx_spi_driver = { +static struct of_platform_driver of_fsl_spi_driver = { .driver = { - .name = "mpc8xxx_spi", + .name = "fsl_spi", .owner = THIS_MODULE, - .of_match_table = of_mpc8xxx_spi_match, + .of_match_table = of_fsl_spi_match, }, - .probe = of_mpc8xxx_spi_probe, - .remove = __devexit_p(of_mpc8xxx_spi_remove), + .probe = of_fsl_spi_probe, + .remove = __devexit_p(of_fsl_spi_remove), }; #ifdef CONFIG_MPC832x_RDB /* - * XXX XXX XXX + * XXX XXX XXX * This is "legacy" platform driver, was used by the MPC8323E-RDB boards * only. The driver should go away soon, since newer MPC8323E-RDB's device * tree can work with OpenFirmware driver. But for now we support old trees @@ -1366,7 +1135,7 @@ static int __devinit plat_mpc8xxx_spi_probe(struct platform_device *pdev) if (irq <= 0) return -EINVAL; - master = mpc8xxx_spi_probe(&pdev->dev, mem, irq); + master = fsl_spi_probe(&pdev->dev, mem, irq); if (IS_ERR(master)) return PTR_ERR(master); return 0; @@ -1405,21 +1174,20 @@ static void __init legacy_driver_register(void) {} static void __exit legacy_driver_unregister(void) {} #endif /* CONFIG_MPC832x_RDB */ -static int __init mpc8xxx_spi_init(void) +static int __init fsl_spi_init(void) { legacy_driver_register(); - return of_register_platform_driver(&of_mpc8xxx_spi_driver); + return of_register_platform_driver(&of_fsl_spi_driver); } +module_init(fsl_spi_init); -static void __exit mpc8xxx_spi_exit(void) +static void __exit fsl_spi_exit(void) { - of_unregister_platform_driver(&of_mpc8xxx_spi_driver); + of_unregister_platform_driver(&of_fsl_spi_driver); legacy_driver_unregister(); } - -module_init(mpc8xxx_spi_init); -module_exit(mpc8xxx_spi_exit); +module_exit(fsl_spi_exit); MODULE_AUTHOR("Kumar Gala"); -MODULE_DESCRIPTION("Simple MPC8xxx SPI Driver"); +MODULE_DESCRIPTION("Simple Freescale SPI Driver"); MODULE_LICENSE("GPL"); diff --git a/drivers/spi/spi_s3c64xx.c b/drivers/spi/spi_s3c64xx.c index c3038da2648a..795828b90f45 100644 --- a/drivers/spi/spi_s3c64xx.c +++ b/drivers/spi/spi_s3c64xx.c @@ -261,15 +261,25 @@ static void enable_datapath(struct s3c64xx_spi_driver_data *sdd, chcfg |= S3C64XX_SPI_CH_TXCH_ON; if (dma_mode) { modecfg |= S3C64XX_SPI_MODE_TXDMA_ON; - s3c2410_dma_config(sdd->tx_dmach, 1); + s3c2410_dma_config(sdd->tx_dmach, sdd->cur_bpw / 8); s3c2410_dma_enqueue(sdd->tx_dmach, (void *)sdd, xfer->tx_dma, xfer->len); s3c2410_dma_ctrl(sdd->tx_dmach, S3C2410_DMAOP_START); } else { - unsigned char *buf = (unsigned char *) xfer->tx_buf; - int i = 0; - while (i < xfer->len) - writeb(buf[i++], regs + S3C64XX_SPI_TX_DATA); + switch (sdd->cur_bpw) { + case 32: + iowrite32_rep(regs + S3C64XX_SPI_TX_DATA, + xfer->tx_buf, xfer->len / 4); + break; + case 16: + iowrite16_rep(regs + S3C64XX_SPI_TX_DATA, + xfer->tx_buf, xfer->len / 2); + break; + default: + iowrite8_rep(regs + S3C64XX_SPI_TX_DATA, + xfer->tx_buf, xfer->len); + break; + } } } @@ -286,7 +296,7 @@ static void enable_datapath(struct s3c64xx_spi_driver_data *sdd, writel(((xfer->len * 8 / sdd->cur_bpw) & 0xffff) | S3C64XX_SPI_PACKET_CNT_EN, regs + S3C64XX_SPI_PACKET_CNT); - s3c2410_dma_config(sdd->rx_dmach, 1); + s3c2410_dma_config(sdd->rx_dmach, sdd->cur_bpw / 8); s3c2410_dma_enqueue(sdd->rx_dmach, (void *)sdd, xfer->rx_dma, xfer->len); s3c2410_dma_ctrl(sdd->rx_dmach, S3C2410_DMAOP_START); @@ -366,20 +376,26 @@ static int wait_for_xfer(struct s3c64xx_spi_driver_data *sdd, return -EIO; } } else { - unsigned char *buf; - int i; - /* If it was only Tx */ if (xfer->rx_buf == NULL) { sdd->state &= ~TXBUSY; return 0; } - i = 0; - buf = xfer->rx_buf; - while (i < xfer->len) - buf[i++] = readb(regs + S3C64XX_SPI_RX_DATA); - + switch (sdd->cur_bpw) { + case 32: + ioread32_rep(regs + S3C64XX_SPI_RX_DATA, + xfer->rx_buf, xfer->len / 4); + break; + case 16: + ioread16_rep(regs + S3C64XX_SPI_RX_DATA, + xfer->rx_buf, xfer->len / 2); + break; + default: + ioread8_rep(regs + S3C64XX_SPI_RX_DATA, + xfer->rx_buf, xfer->len); + break; + } sdd->state &= ~RXBUSY; } @@ -399,13 +415,18 @@ static inline void disable_cs(struct s3c64xx_spi_driver_data *sdd, static void s3c64xx_spi_config(struct s3c64xx_spi_driver_data *sdd) { + struct s3c64xx_spi_info *sci = sdd->cntrlr_info; void __iomem *regs = sdd->regs; u32 val; /* Disable Clock */ - val = readl(regs + S3C64XX_SPI_CLK_CFG); - val &= ~S3C64XX_SPI_ENCLK_ENABLE; - writel(val, regs + S3C64XX_SPI_CLK_CFG); + if (sci->clk_from_cmu) { + clk_disable(sdd->src_clk); + } else { + val = readl(regs + S3C64XX_SPI_CLK_CFG); + val &= ~S3C64XX_SPI_ENCLK_ENABLE; + writel(val, regs + S3C64XX_SPI_CLK_CFG); + } /* Set Polarity and Phase */ val = readl(regs + S3C64XX_SPI_CH_CFG); @@ -429,29 +450,39 @@ static void s3c64xx_spi_config(struct s3c64xx_spi_driver_data *sdd) switch (sdd->cur_bpw) { case 32: val |= S3C64XX_SPI_MODE_BUS_TSZ_WORD; + val |= S3C64XX_SPI_MODE_CH_TSZ_WORD; break; case 16: val |= S3C64XX_SPI_MODE_BUS_TSZ_HALFWORD; + val |= S3C64XX_SPI_MODE_CH_TSZ_HALFWORD; break; default: val |= S3C64XX_SPI_MODE_BUS_TSZ_BYTE; + val |= S3C64XX_SPI_MODE_CH_TSZ_BYTE; break; } - val |= S3C64XX_SPI_MODE_CH_TSZ_BYTE; /* Always 8bits wide */ writel(val, regs + S3C64XX_SPI_MODE_CFG); - /* Configure Clock */ - val = readl(regs + S3C64XX_SPI_CLK_CFG); - val &= ~S3C64XX_SPI_PSR_MASK; - val |= ((clk_get_rate(sdd->src_clk) / sdd->cur_speed / 2 - 1) - & S3C64XX_SPI_PSR_MASK); - writel(val, regs + S3C64XX_SPI_CLK_CFG); - - /* Enable Clock */ - val = readl(regs + S3C64XX_SPI_CLK_CFG); - val |= S3C64XX_SPI_ENCLK_ENABLE; - writel(val, regs + S3C64XX_SPI_CLK_CFG); + if (sci->clk_from_cmu) { + /* Configure Clock */ + /* There is half-multiplier before the SPI */ + clk_set_rate(sdd->src_clk, sdd->cur_speed * 2); + /* Enable Clock */ + clk_enable(sdd->src_clk); + } else { + /* Configure Clock */ + val = readl(regs + S3C64XX_SPI_CLK_CFG); + val &= ~S3C64XX_SPI_PSR_MASK; + val |= ((clk_get_rate(sdd->src_clk) / sdd->cur_speed / 2 - 1) + & S3C64XX_SPI_PSR_MASK); + writel(val, regs + S3C64XX_SPI_CLK_CFG); + + /* Enable Clock */ + val = readl(regs + S3C64XX_SPI_CLK_CFG); + val |= S3C64XX_SPI_ENCLK_ENABLE; + writel(val, regs + S3C64XX_SPI_CLK_CFG); + } } static void s3c64xx_spi_dma_rxcb(struct s3c2410_dma_chan *chan, void *buf_id, @@ -499,6 +530,7 @@ static void s3c64xx_spi_dma_txcb(struct s3c2410_dma_chan *chan, void *buf_id, static int s3c64xx_spi_map_mssg(struct s3c64xx_spi_driver_data *sdd, struct spi_message *msg) { + struct s3c64xx_spi_info *sci = sdd->cntrlr_info; struct device *dev = &sdd->pdev->dev; struct spi_transfer *xfer; @@ -514,6 +546,9 @@ static int s3c64xx_spi_map_mssg(struct s3c64xx_spi_driver_data *sdd, /* Map until end or first fail */ list_for_each_entry(xfer, &msg->transfers, transfer_list) { + if (xfer->len <= ((sci->fifo_lvl_mask >> 1) + 1)) + continue; + if (xfer->tx_buf != NULL) { xfer->tx_dma = dma_map_single(dev, (void *)xfer->tx_buf, xfer->len, @@ -545,6 +580,7 @@ static int s3c64xx_spi_map_mssg(struct s3c64xx_spi_driver_data *sdd, static void s3c64xx_spi_unmap_mssg(struct s3c64xx_spi_driver_data *sdd, struct spi_message *msg) { + struct s3c64xx_spi_info *sci = sdd->cntrlr_info; struct device *dev = &sdd->pdev->dev; struct spi_transfer *xfer; @@ -553,6 +589,9 @@ static void s3c64xx_spi_unmap_mssg(struct s3c64xx_spi_driver_data *sdd, list_for_each_entry(xfer, &msg->transfers, transfer_list) { + if (xfer->len <= ((sci->fifo_lvl_mask >> 1) + 1)) + continue; + if (xfer->rx_buf != NULL && xfer->rx_dma != XFER_DMAADDR_INVALID) dma_unmap_single(dev, xfer->rx_dma, @@ -608,6 +647,14 @@ static void handle_msg(struct s3c64xx_spi_driver_data *sdd, bpw = xfer->bits_per_word ? : spi->bits_per_word; speed = xfer->speed_hz ? : spi->max_speed_hz; + if (xfer->len % (bpw / 8)) { + dev_err(&spi->dev, + "Xfer length(%u) not a multiple of word size(%u)\n", + xfer->len, bpw / 8); + status = -EIO; + goto out; + } + if (bpw != sdd->cur_bpw || speed != sdd->cur_speed) { sdd->cur_bpw = bpw; sdd->cur_speed = speed; @@ -798,7 +845,6 @@ static int s3c64xx_spi_setup(struct spi_device *spi) struct s3c64xx_spi_driver_data *sdd; struct s3c64xx_spi_info *sci; struct spi_message *msg; - u32 psr, speed; unsigned long flags; int err = 0; @@ -841,32 +887,37 @@ static int s3c64xx_spi_setup(struct spi_device *spi) } /* Check if we can provide the requested rate */ - speed = clk_get_rate(sdd->src_clk) / 2 / (0 + 1); /* Max possible */ - - if (spi->max_speed_hz > speed) - spi->max_speed_hz = speed; - - psr = clk_get_rate(sdd->src_clk) / 2 / spi->max_speed_hz - 1; - psr &= S3C64XX_SPI_PSR_MASK; - if (psr == S3C64XX_SPI_PSR_MASK) - psr--; + if (!sci->clk_from_cmu) { + u32 psr, speed; + + /* Max possible */ + speed = clk_get_rate(sdd->src_clk) / 2 / (0 + 1); + + if (spi->max_speed_hz > speed) + spi->max_speed_hz = speed; + + psr = clk_get_rate(sdd->src_clk) / 2 / spi->max_speed_hz - 1; + psr &= S3C64XX_SPI_PSR_MASK; + if (psr == S3C64XX_SPI_PSR_MASK) + psr--; + + speed = clk_get_rate(sdd->src_clk) / 2 / (psr + 1); + if (spi->max_speed_hz < speed) { + if (psr+1 < S3C64XX_SPI_PSR_MASK) { + psr++; + } else { + err = -EINVAL; + goto setup_exit; + } + } - speed = clk_get_rate(sdd->src_clk) / 2 / (psr + 1); - if (spi->max_speed_hz < speed) { - if (psr+1 < S3C64XX_SPI_PSR_MASK) { - psr++; - } else { + speed = clk_get_rate(sdd->src_clk) / 2 / (psr + 1); + if (spi->max_speed_hz >= speed) + spi->max_speed_hz = speed; + else err = -EINVAL; - goto setup_exit; - } } - speed = clk_get_rate(sdd->src_clk) / 2 / (psr + 1); - if (spi->max_speed_hz >= speed) - spi->max_speed_hz = speed; - else - err = -EINVAL; - setup_exit: /* setup() returns with device de-selected */ @@ -888,7 +939,8 @@ static void s3c64xx_spi_hwinit(struct s3c64xx_spi_driver_data *sdd, int channel) /* Disable Interrupts - we use Polling if not DMA mode */ writel(0, regs + S3C64XX_SPI_INT_EN); - writel(sci->src_clk_nr << S3C64XX_SPI_CLKSEL_SRCSHFT, + if (!sci->clk_from_cmu) + writel(sci->src_clk_nr << S3C64XX_SPI_CLKSEL_SRCSHFT, regs + S3C64XX_SPI_CLK_CFG); writel(0, regs + S3C64XX_SPI_MODE_CFG); writel(0, regs + S3C64XX_SPI_PACKET_CNT); diff --git a/drivers/spi/spi_topcliff_pch.c b/drivers/spi/spi_topcliff_pch.c new file mode 100644 index 000000000000..58e187f45ec7 --- /dev/null +++ b/drivers/spi/spi_topcliff_pch.c @@ -0,0 +1,1303 @@ +/* + * SPI bus driver for the Topcliff PCH used by Intel SoCs + * + * Copyright (C) 2010 OKI SEMICONDUCTOR Co., LTD. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA. + */ + +#include <linux/delay.h> +#include <linux/pci.h> +#include <linux/wait.h> +#include <linux/spi/spi.h> +#include <linux/interrupt.h> +#include <linux/sched.h> +#include <linux/spi/spidev.h> +#include <linux/module.h> +#include <linux/device.h> + +/* Register offsets */ +#define PCH_SPCR 0x00 /* SPI control register */ +#define PCH_SPBRR 0x04 /* SPI baud rate register */ +#define PCH_SPSR 0x08 /* SPI status register */ +#define PCH_SPDWR 0x0C /* SPI write data register */ +#define PCH_SPDRR 0x10 /* SPI read data register */ +#define PCH_SSNXCR 0x18 /* SSN Expand Control Register */ +#define PCH_SRST 0x1C /* SPI reset register */ + +#define PCH_SPSR_TFD 0x000007C0 +#define PCH_SPSR_RFD 0x0000F800 + +#define PCH_READABLE(x) (((x) & PCH_SPSR_RFD)>>11) +#define PCH_WRITABLE(x) (((x) & PCH_SPSR_TFD)>>6) + +#define PCH_RX_THOLD 7 +#define PCH_RX_THOLD_MAX 15 + +#define PCH_MAX_BAUDRATE 5000000 +#define PCH_MAX_FIFO_DEPTH 16 + +#define STATUS_RUNNING 1 +#define STATUS_EXITING 2 +#define PCH_SLEEP_TIME 10 + +#define PCH_ADDRESS_SIZE 0x20 + +#define SSN_LOW 0x02U +#define SSN_NO_CONTROL 0x00U +#define PCH_MAX_CS 0xFF +#define PCI_DEVICE_ID_GE_SPI 0x8816 + +#define SPCR_SPE_BIT (1 << 0) +#define SPCR_MSTR_BIT (1 << 1) +#define SPCR_LSBF_BIT (1 << 4) +#define SPCR_CPHA_BIT (1 << 5) +#define SPCR_CPOL_BIT (1 << 6) +#define SPCR_TFIE_BIT (1 << 8) +#define SPCR_RFIE_BIT (1 << 9) +#define SPCR_FIE_BIT (1 << 10) +#define SPCR_ORIE_BIT (1 << 11) +#define SPCR_MDFIE_BIT (1 << 12) +#define SPCR_FICLR_BIT (1 << 24) +#define SPSR_TFI_BIT (1 << 0) +#define SPSR_RFI_BIT (1 << 1) +#define SPSR_FI_BIT (1 << 2) +#define SPBRR_SIZE_BIT (1 << 10) + +#define PCH_ALL (SPCR_TFIE_BIT|SPCR_RFIE_BIT|SPCR_FIE_BIT|SPCR_ORIE_BIT|SPCR_MDFIE_BIT) + +#define SPCR_RFIC_FIELD 20 +#define SPCR_TFIC_FIELD 16 + +#define SPSR_INT_BITS 0x1F +#define MASK_SPBRR_SPBR_BITS (~((1 << 10) - 1)) +#define MASK_RFIC_SPCR_BITS (~(0xf << 20)) +#define MASK_TFIC_SPCR_BITS (~(0xf000f << 12)) + +#define PCH_CLOCK_HZ 50000000 +#define PCH_MAX_SPBR 1023 + + +/** + * struct pch_spi_data - Holds the SPI channel specific details + * @io_remap_addr: The remapped PCI base address + * @master: Pointer to the SPI master structure + * @work: Reference to work queue handler + * @wk: Workqueue for carrying out execution of the + * requests + * @wait: Wait queue for waking up upon receiving an + * interrupt. + * @transfer_complete: Status of SPI Transfer + * @bcurrent_msg_processing: Status flag for message processing + * @lock: Lock for protecting this structure + * @queue: SPI Message queue + * @status: Status of the SPI driver + * @bpw_len: Length of data to be transferred in bits per + * word + * @transfer_active: Flag showing active transfer + * @tx_index: Transmit data count; for bookkeeping during + * transfer + * @rx_index: Receive data count; for bookkeeping during + * transfer + * @tx_buff: Buffer for data to be transmitted + * @rx_index: Buffer for Received data + * @n_curnt_chip: The chip number that this SPI driver currently + * operates on + * @current_chip: Reference to the current chip that this SPI + * driver currently operates on + * @current_msg: The current message that this SPI driver is + * handling + * @cur_trans: The current transfer that this SPI driver is + * handling + * @board_dat: Reference to the SPI device data structure + */ +struct pch_spi_data { + void __iomem *io_remap_addr; + struct spi_master *master; + struct work_struct work; + struct workqueue_struct *wk; + wait_queue_head_t wait; + u8 transfer_complete; + u8 bcurrent_msg_processing; + spinlock_t lock; + struct list_head queue; + u8 status; + u32 bpw_len; + u8 transfer_active; + u32 tx_index; + u32 rx_index; + u16 *pkt_tx_buff; + u16 *pkt_rx_buff; + u8 n_curnt_chip; + struct spi_device *current_chip; + struct spi_message *current_msg; + struct spi_transfer *cur_trans; + struct pch_spi_board_data *board_dat; +}; + +/** + * struct pch_spi_board_data - Holds the SPI device specific details + * @pdev: Pointer to the PCI device + * @irq_reg_sts: Status of IRQ registration + * @pci_req_sts: Status of pci_request_regions + * @suspend_sts: Status of suspend + * @data: Pointer to SPI channel data structure + */ +struct pch_spi_board_data { + struct pci_dev *pdev; + u8 irq_reg_sts; + u8 pci_req_sts; + u8 suspend_sts; + struct pch_spi_data *data; +}; + +static struct pci_device_id pch_spi_pcidev_id[] = { + {PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_GE_SPI)}, + {0,} +}; + +/** + * pch_spi_writereg() - Performs register writes + * @master: Pointer to struct spi_master. + * @idx: Register offset. + * @val: Value to be written to register. + */ +static inline void pch_spi_writereg(struct spi_master *master, int idx, u32 val) +{ + struct pch_spi_data *data = spi_master_get_devdata(master); + iowrite32(val, (data->io_remap_addr + idx)); +} + +/** + * pch_spi_readreg() - Performs register reads + * @master: Pointer to struct spi_master. + * @idx: Register offset. + */ +static inline u32 pch_spi_readreg(struct spi_master *master, int idx) +{ + struct pch_spi_data *data = spi_master_get_devdata(master); + return ioread32(data->io_remap_addr + idx); +} + +static inline void pch_spi_setclr_reg(struct spi_master *master, int idx, + u32 set, u32 clr) +{ + u32 tmp = pch_spi_readreg(master, idx); + tmp = (tmp & ~clr) | set; + pch_spi_writereg(master, idx, tmp); +} + +static void pch_spi_set_master_mode(struct spi_master *master) +{ + pch_spi_setclr_reg(master, PCH_SPCR, SPCR_MSTR_BIT, 0); +} + +/** + * pch_spi_clear_fifo() - Clears the Transmit and Receive FIFOs + * @master: Pointer to struct spi_master. + */ +static void pch_spi_clear_fifo(struct spi_master *master) +{ + pch_spi_setclr_reg(master, PCH_SPCR, SPCR_FICLR_BIT, 0); + pch_spi_setclr_reg(master, PCH_SPCR, 0, SPCR_FICLR_BIT); +} + +static void pch_spi_handler_sub(struct pch_spi_data *data, u32 reg_spsr_val, + void __iomem *io_remap_addr) +{ + u32 n_read, tx_index, rx_index, bpw_len; + u16 *pkt_rx_buffer, *pkt_tx_buff; + int read_cnt; + u32 reg_spcr_val; + void __iomem *spsr; + void __iomem *spdrr; + void __iomem *spdwr; + + spsr = io_remap_addr + PCH_SPSR; + iowrite32(reg_spsr_val, spsr); + + if (data->transfer_active) { + rx_index = data->rx_index; + tx_index = data->tx_index; + bpw_len = data->bpw_len; + pkt_rx_buffer = data->pkt_rx_buff; + pkt_tx_buff = data->pkt_tx_buff; + + spdrr = io_remap_addr + PCH_SPDRR; + spdwr = io_remap_addr + PCH_SPDWR; + + n_read = PCH_READABLE(reg_spsr_val); + + for (read_cnt = 0; (read_cnt < n_read); read_cnt++) { + pkt_rx_buffer[rx_index++] = ioread32(spdrr); + if (tx_index < bpw_len) + iowrite32(pkt_tx_buff[tx_index++], spdwr); + } + + /* disable RFI if not needed */ + if ((bpw_len - rx_index) <= PCH_MAX_FIFO_DEPTH) { + reg_spcr_val = ioread32(io_remap_addr + PCH_SPCR); + reg_spcr_val &= ~SPCR_RFIE_BIT; /* disable RFI */ + + /* reset rx threshold */ + reg_spcr_val &= MASK_RFIC_SPCR_BITS; + reg_spcr_val |= (PCH_RX_THOLD_MAX << SPCR_RFIC_FIELD); + iowrite32(((reg_spcr_val) &= (~(SPCR_RFIE_BIT))), + (io_remap_addr + PCH_SPCR)); + } + + /* update counts */ + data->tx_index = tx_index; + data->rx_index = rx_index; + + } + + /* if transfer complete interrupt */ + if (reg_spsr_val & SPSR_FI_BIT) { + /* disable FI & RFI interrupts */ + pch_spi_setclr_reg(data->master, PCH_SPCR, 0, + SPCR_FIE_BIT | SPCR_TFIE_BIT); + + /* transfer is completed;inform pch_spi_process_messages */ + data->transfer_complete = true; + wake_up(&data->wait); + } +} + +/** + * pch_spi_handler() - Interrupt handler + * @irq: The interrupt number. + * @dev_id: Pointer to struct pch_spi_board_data. + */ +static irqreturn_t pch_spi_handler(int irq, void *dev_id) +{ + u32 reg_spsr_val; + struct pch_spi_data *data; + void __iomem *spsr; + void __iomem *io_remap_addr; + irqreturn_t ret = IRQ_NONE; + struct pch_spi_board_data *board_dat = dev_id; + + if (board_dat->suspend_sts) { + dev_dbg(&board_dat->pdev->dev, + "%s returning due to suspend\n", __func__); + return IRQ_NONE; + } + + data = board_dat->data; + io_remap_addr = data->io_remap_addr; + spsr = io_remap_addr + PCH_SPSR; + + reg_spsr_val = ioread32(spsr); + + /* Check if the interrupt is for SPI device */ + if (reg_spsr_val & (SPSR_FI_BIT | SPSR_RFI_BIT)) { + pch_spi_handler_sub(data, reg_spsr_val, io_remap_addr); + ret = IRQ_HANDLED; + } + + dev_dbg(&board_dat->pdev->dev, "%s EXIT return value=%d\n", + __func__, ret); + + return ret; +} + +/** + * pch_spi_set_baud_rate() - Sets SPBR field in SPBRR + * @master: Pointer to struct spi_master. + * @speed_hz: Baud rate. + */ +static void pch_spi_set_baud_rate(struct spi_master *master, u32 speed_hz) +{ + u32 n_spbr = PCH_CLOCK_HZ / (speed_hz * 2); + + /* if baud rate is less than we can support limit it */ + if (n_spbr > PCH_MAX_SPBR) + n_spbr = PCH_MAX_SPBR; + + pch_spi_setclr_reg(master, PCH_SPBRR, n_spbr, ~MASK_SPBRR_SPBR_BITS); +} + +/** + * pch_spi_set_bits_per_word() - Sets SIZE field in SPBRR + * @master: Pointer to struct spi_master. + * @bits_per_word: Bits per word for SPI transfer. + */ +static void pch_spi_set_bits_per_word(struct spi_master *master, + u8 bits_per_word) +{ + if (bits_per_word == 8) + pch_spi_setclr_reg(master, PCH_SPBRR, 0, SPBRR_SIZE_BIT); + else + pch_spi_setclr_reg(master, PCH_SPBRR, SPBRR_SIZE_BIT, 0); +} + +/** + * pch_spi_setup_transfer() - Configures the PCH SPI hardware for transfer + * @spi: Pointer to struct spi_device. + */ +static void pch_spi_setup_transfer(struct spi_device *spi) +{ + u32 flags = 0; + + dev_dbg(&spi->dev, "%s SPBRR content =%x setting baud rate=%d\n", + __func__, pch_spi_readreg(spi->master, PCH_SPBRR), + spi->max_speed_hz); + pch_spi_set_baud_rate(spi->master, spi->max_speed_hz); + + /* set bits per word */ + pch_spi_set_bits_per_word(spi->master, spi->bits_per_word); + + if (!(spi->mode & SPI_LSB_FIRST)) + flags |= SPCR_LSBF_BIT; + if (spi->mode & SPI_CPOL) + flags |= SPCR_CPOL_BIT; + if (spi->mode & SPI_CPHA) + flags |= SPCR_CPHA_BIT; + pch_spi_setclr_reg(spi->master, PCH_SPCR, flags, + (SPCR_LSBF_BIT | SPCR_CPOL_BIT | SPCR_CPHA_BIT)); + + /* Clear the FIFO by toggling FICLR to 1 and back to 0 */ + pch_spi_clear_fifo(spi->master); +} + +/** + * pch_spi_reset() - Clears SPI registers + * @master: Pointer to struct spi_master. + */ +static void pch_spi_reset(struct spi_master *master) +{ + /* write 1 to reset SPI */ + pch_spi_writereg(master, PCH_SRST, 0x1); + + /* clear reset */ + pch_spi_writereg(master, PCH_SRST, 0x0); +} + +static int pch_spi_setup(struct spi_device *pspi) +{ + /* check bits per word */ + if (pspi->bits_per_word == 0) { + pspi->bits_per_word = 8; + dev_dbg(&pspi->dev, "%s 8 bits per word\n", __func__); + } + + if ((pspi->bits_per_word != 8) && (pspi->bits_per_word != 16)) { + dev_err(&pspi->dev, "%s Invalid bits per word\n", __func__); + return -EINVAL; + } + + /* Check baud rate setting */ + /* if baud rate of chip is greater than + max we can support,return error */ + if ((pspi->max_speed_hz) > PCH_MAX_BAUDRATE) + pspi->max_speed_hz = PCH_MAX_BAUDRATE; + + dev_dbg(&pspi->dev, "%s MODE = %x\n", __func__, + (pspi->mode) & (SPI_CPOL | SPI_CPHA)); + + return 0; +} + +static int pch_spi_transfer(struct spi_device *pspi, struct spi_message *pmsg) +{ + + struct spi_transfer *transfer; + struct pch_spi_data *data = spi_master_get_devdata(pspi->master); + int retval; + unsigned long flags; + + /* validate spi message and baud rate */ + if (unlikely(list_empty(&pmsg->transfers) == 1)) { + dev_err(&pspi->dev, "%s list empty\n", __func__); + retval = -EINVAL; + goto err_out; + } + + if (unlikely(pspi->max_speed_hz == 0)) { + dev_err(&pspi->dev, "%s pch_spi_tranfer maxspeed=%d\n", + __func__, pspi->max_speed_hz); + retval = -EINVAL; + goto err_out; + } + + dev_dbg(&pspi->dev, "%s Transfer List not empty. " + "Transfer Speed is set.\n", __func__); + + /* validate Tx/Rx buffers and Transfer length */ + list_for_each_entry(transfer, &pmsg->transfers, transfer_list) { + if (!transfer->tx_buf && !transfer->rx_buf) { + dev_err(&pspi->dev, + "%s Tx and Rx buffer NULL\n", __func__); + retval = -EINVAL; + goto err_out; + } + + if (!transfer->len) { + dev_err(&pspi->dev, "%s Transfer length invalid\n", + __func__); + retval = -EINVAL; + goto err_out; + } + + dev_dbg(&pspi->dev, "%s Tx/Rx buffer valid. Transfer length" + " valid\n", __func__); + + /* if baud rate hs been specified validate the same */ + if (transfer->speed_hz > PCH_MAX_BAUDRATE) + transfer->speed_hz = PCH_MAX_BAUDRATE; + + /* if bits per word has been specified validate the same */ + if (transfer->bits_per_word) { + if ((transfer->bits_per_word != 8) + && (transfer->bits_per_word != 16)) { + retval = -EINVAL; + dev_err(&pspi->dev, + "%s Invalid bits per word\n", __func__); + goto err_out; + } + } + } + + spin_lock_irqsave(&data->lock, flags); + + /* We won't process any messages if we have been asked to terminate */ + if (data->status == STATUS_EXITING) { + dev_err(&pspi->dev, "%s status = STATUS_EXITING.\n", __func__); + retval = -ESHUTDOWN; + goto err_return_spinlock; + } + + /* If suspended ,return -EINVAL */ + if (data->board_dat->suspend_sts) { + dev_err(&pspi->dev, "%s suspend; returning EINVAL\n", __func__); + retval = -EINVAL; + goto err_return_spinlock; + } + + /* set status of message */ + pmsg->actual_length = 0; + dev_dbg(&pspi->dev, "%s - pmsg->status =%d\n", __func__, pmsg->status); + + pmsg->status = -EINPROGRESS; + + /* add message to queue */ + list_add_tail(&pmsg->queue, &data->queue); + dev_dbg(&pspi->dev, "%s - Invoked list_add_tail\n", __func__); + + /* schedule work queue to run */ + queue_work(data->wk, &data->work); + dev_dbg(&pspi->dev, "%s - Invoked queue work\n", __func__); + + retval = 0; + +err_return_spinlock: + spin_unlock_irqrestore(&data->lock, flags); +err_out: + dev_dbg(&pspi->dev, "%s RETURN=%d\n", __func__, retval); + return retval; +} + +static inline void pch_spi_select_chip(struct pch_spi_data *data, + struct spi_device *pspi) +{ + if (data->current_chip != NULL) { + if (pspi->chip_select != data->n_curnt_chip) { + dev_dbg(&pspi->dev, "%s : different slave\n", __func__); + data->current_chip = NULL; + } + } + + data->current_chip = pspi; + + data->n_curnt_chip = data->current_chip->chip_select; + + dev_dbg(&pspi->dev, "%s :Invoking pch_spi_setup_transfer\n", __func__); + pch_spi_setup_transfer(pspi); +} + +static void pch_spi_set_tx(struct pch_spi_data *data, int *bpw, + struct spi_message **ppmsg) +{ + int size; + u32 n_writes; + int j; + struct spi_message *pmsg; + const u8 *tx_buf; + const u16 *tx_sbuf; + + pmsg = *ppmsg; + + /* set baud rate if needed */ + if (data->cur_trans->speed_hz) { + dev_dbg(&data->master->dev, "%s:setting baud rate\n", __func__); + pch_spi_set_baud_rate(data->master, data->cur_trans->speed_hz); + } + + /* set bits per word if needed */ + if (data->cur_trans->bits_per_word && + (data->current_msg->spi->bits_per_word != data->cur_trans->bits_per_word)) { + dev_dbg(&data->master->dev, "%s:set bits per word\n", __func__); + pch_spi_set_bits_per_word(data->master, + data->cur_trans->bits_per_word); + *bpw = data->cur_trans->bits_per_word; + } else { + *bpw = data->current_msg->spi->bits_per_word; + } + + /* reset Tx/Rx index */ + data->tx_index = 0; + data->rx_index = 0; + + data->bpw_len = data->cur_trans->len / (*bpw / 8); + + /* find alloc size */ + size = data->cur_trans->len * sizeof(*data->pkt_tx_buff); + + /* allocate memory for pkt_tx_buff & pkt_rx_buffer */ + data->pkt_tx_buff = kzalloc(size, GFP_KERNEL); + if (data->pkt_tx_buff != NULL) { + data->pkt_rx_buff = kzalloc(size, GFP_KERNEL); + if (!data->pkt_rx_buff) + kfree(data->pkt_tx_buff); + } + + if (!data->pkt_rx_buff) { + /* flush queue and set status of all transfers to -ENOMEM */ + dev_err(&data->master->dev, "%s :kzalloc failed\n", __func__); + list_for_each_entry(pmsg, data->queue.next, queue) { + pmsg->status = -ENOMEM; + + if (pmsg->complete != 0) + pmsg->complete(pmsg->context); + + /* delete from queue */ + list_del_init(&pmsg->queue); + } + return; + } + + /* copy Tx Data */ + if (data->cur_trans->tx_buf != NULL) { + if (*bpw == 8) { + tx_buf = data->cur_trans->tx_buf; + for (j = 0; j < data->bpw_len; j++) + data->pkt_tx_buff[j] = *tx_buf++; + } else { + tx_sbuf = data->cur_trans->tx_buf; + for (j = 0; j < data->bpw_len; j++) + data->pkt_tx_buff[j] = *tx_sbuf++; + } + } + + /* if len greater than PCH_MAX_FIFO_DEPTH, write 16,else len bytes */ + n_writes = data->bpw_len; + if (n_writes > PCH_MAX_FIFO_DEPTH) + n_writes = PCH_MAX_FIFO_DEPTH; + + dev_dbg(&data->master->dev, "\n%s:Pulling down SSN low - writing " + "0x2 to SSNXCR\n", __func__); + pch_spi_writereg(data->master, PCH_SSNXCR, SSN_LOW); + + for (j = 0; j < n_writes; j++) + pch_spi_writereg(data->master, PCH_SPDWR, data->pkt_tx_buff[j]); + + /* update tx_index */ + data->tx_index = j; + + /* reset transfer complete flag */ + data->transfer_complete = false; + data->transfer_active = true; +} + + +static void pch_spi_nomore_transfer(struct pch_spi_data *data, + struct spi_message *pmsg) +{ + dev_dbg(&data->master->dev, "%s called\n", __func__); + /* Invoke complete callback + * [To the spi core..indicating end of transfer] */ + data->current_msg->status = 0; + + if (data->current_msg->complete != 0) { + dev_dbg(&data->master->dev, + "%s:Invoking callback of SPI core\n", __func__); + data->current_msg->complete(data->current_msg->context); + } + + /* update status in global variable */ + data->bcurrent_msg_processing = false; + + dev_dbg(&data->master->dev, + "%s:data->bcurrent_msg_processing = false\n", __func__); + + data->current_msg = NULL; + data->cur_trans = NULL; + + /* check if we have items in list and not suspending + * return 1 if list empty */ + if ((list_empty(&data->queue) == 0) && + (!data->board_dat->suspend_sts) && + (data->status != STATUS_EXITING)) { + /* We have some more work to do (either there is more tranint + * bpw;sfer requests in the current message or there are + *more messages) + */ + dev_dbg(&data->master->dev, "%s:Invoke queue_work\n", __func__); + queue_work(data->wk, &data->work); + } else if (data->board_dat->suspend_sts || + data->status == STATUS_EXITING) { + dev_dbg(&data->master->dev, + "%s suspend/remove initiated, flushing queue\n", + __func__); + list_for_each_entry(pmsg, data->queue.next, queue) { + pmsg->status = -EIO; + + if (pmsg->complete) + pmsg->complete(pmsg->context); + + /* delete from queue */ + list_del_init(&pmsg->queue); + } + } +} + +static void pch_spi_set_ir(struct pch_spi_data *data) +{ + /* enable interrupts */ + if ((data->bpw_len) > PCH_MAX_FIFO_DEPTH) { + /* set receive threhold to PCH_RX_THOLD */ + pch_spi_setclr_reg(data->master, PCH_SPCR, + PCH_RX_THOLD << SPCR_TFIC_FIELD, + ~MASK_TFIC_SPCR_BITS); + /* enable FI and RFI interrupts */ + pch_spi_setclr_reg(data->master, PCH_SPCR, + SPCR_RFIE_BIT | SPCR_TFIE_BIT, 0); + } else { + /* set receive threhold to maximum */ + pch_spi_setclr_reg(data->master, PCH_SPCR, + PCH_RX_THOLD_MAX << SPCR_TFIC_FIELD, + ~MASK_TFIC_SPCR_BITS); + /* enable FI interrupt */ + pch_spi_setclr_reg(data->master, PCH_SPCR, SPCR_FIE_BIT, 0); + } + + dev_dbg(&data->master->dev, + "%s:invoking pch_spi_set_enable to enable SPI\n", __func__); + + /* SPI set enable */ + pch_spi_setclr_reg(data->current_chip->master, PCH_SPCR, SPCR_SPE_BIT, 0); + + /* Wait until the transfer completes; go to sleep after + initiating the transfer. */ + dev_dbg(&data->master->dev, + "%s:waiting for transfer to get over\n", __func__); + + wait_event_interruptible(data->wait, data->transfer_complete); + + pch_spi_writereg(data->master, PCH_SSNXCR, SSN_NO_CONTROL); + dev_dbg(&data->master->dev, + "%s:no more control over SSN-writing 0 to SSNXCR.", __func__); + + data->transfer_active = false; + dev_dbg(&data->master->dev, + "%s set data->transfer_active = false\n", __func__); + + /* clear all interrupts */ + pch_spi_writereg(data->master, PCH_SPSR, + pch_spi_readreg(data->master, PCH_SPSR)); + /* disable interrupts */ + pch_spi_setclr_reg(data->master, PCH_SPCR, 0, PCH_ALL); +} + +static void pch_spi_copy_rx_data(struct pch_spi_data *data, int bpw) +{ + int j; + u8 *rx_buf; + u16 *rx_sbuf; + + /* copy Rx Data */ + if (!data->cur_trans->rx_buf) + return; + + if (bpw == 8) { + rx_buf = data->cur_trans->rx_buf; + for (j = 0; j < data->bpw_len; j++) + *rx_buf++ = data->pkt_rx_buff[j] & 0xFF; + } else { + rx_sbuf = data->cur_trans->rx_buf; + for (j = 0; j < data->bpw_len; j++) + *rx_sbuf++ = data->pkt_rx_buff[j]; + } +} + + +static void pch_spi_process_messages(struct work_struct *pwork) +{ + struct spi_message *pmsg; + struct pch_spi_data *data; + int bpw; + + data = container_of(pwork, struct pch_spi_data, work); + dev_dbg(&data->master->dev, "%s data initialized\n", __func__); + + spin_lock(&data->lock); + + /* check if suspend has been initiated;if yes flush queue */ + if (data->board_dat->suspend_sts || (data->status == STATUS_EXITING)) { + dev_dbg(&data->master->dev, + "%s suspend/remove initiated,flushing queue\n", + __func__); + + list_for_each_entry(pmsg, data->queue.next, queue) { + pmsg->status = -EIO; + + if (pmsg->complete != 0) { + spin_unlock(&data->lock); + pmsg->complete(pmsg->context); + spin_lock(&data->lock); + } + + /* delete from queue */ + list_del_init(&pmsg->queue); + } + + spin_unlock(&data->lock); + return; + } + + data->bcurrent_msg_processing = true; + dev_dbg(&data->master->dev, + "%s Set data->bcurrent_msg_processing= true\n", __func__); + + /* Get the message from the queue and delete it from there. */ + data->current_msg = list_entry(data->queue.next, struct spi_message, + queue); + + list_del_init(&data->current_msg->queue); + + data->current_msg->status = 0; + + pch_spi_select_chip(data, data->current_msg->spi); + + spin_unlock(&data->lock); + + do { + /* If we are already processing a message get the next + transfer structure from the message otherwise retrieve + the 1st transfer request from the message. */ + spin_lock(&data->lock); + + if (data->cur_trans == NULL) { + data->cur_trans = + list_entry(data->current_msg->transfers. + next, struct spi_transfer, + transfer_list); + dev_dbg(&data->master->dev, + "%s :Getting 1st transfer message\n", __func__); + } else { + data->cur_trans = + list_entry(data->cur_trans->transfer_list.next, + struct spi_transfer, + transfer_list); + dev_dbg(&data->master->dev, + "%s :Getting next transfer message\n", + __func__); + } + + spin_unlock(&data->lock); + + pch_spi_set_tx(data, &bpw, &pmsg); + + /* Control interrupt*/ + pch_spi_set_ir(data); + + /* Disable SPI transfer */ + pch_spi_setclr_reg(data->current_chip->master, PCH_SPCR, 0, + SPCR_SPE_BIT); + + /* clear FIFO */ + pch_spi_clear_fifo(data->master); + + /* copy Rx Data */ + pch_spi_copy_rx_data(data, bpw); + + /* free memory */ + kfree(data->pkt_rx_buff); + data->pkt_rx_buff = NULL; + + kfree(data->pkt_tx_buff); + data->pkt_tx_buff = NULL; + + /* increment message count */ + data->current_msg->actual_length += data->cur_trans->len; + + dev_dbg(&data->master->dev, + "%s:data->current_msg->actual_length=%d\n", + __func__, data->current_msg->actual_length); + + /* check for delay */ + if (data->cur_trans->delay_usecs) { + dev_dbg(&data->master->dev, "%s:" + "delay in usec=%d\n", __func__, + data->cur_trans->delay_usecs); + udelay(data->cur_trans->delay_usecs); + } + + spin_lock(&data->lock); + + /* No more transfer in this message. */ + if ((data->cur_trans->transfer_list.next) == + &(data->current_msg->transfers)) { + pch_spi_nomore_transfer(data, pmsg); + } + + spin_unlock(&data->lock); + + } while (data->cur_trans != NULL); +} + +static void pch_spi_free_resources(struct pch_spi_board_data *board_dat) +{ + dev_dbg(&board_dat->pdev->dev, "%s ENTRY\n", __func__); + + /* free workqueue */ + if (board_dat->data->wk != NULL) { + destroy_workqueue(board_dat->data->wk); + board_dat->data->wk = NULL; + dev_dbg(&board_dat->pdev->dev, + "%s destroy_workqueue invoked successfully\n", + __func__); + } + + /* disable interrupts & free IRQ */ + if (board_dat->irq_reg_sts) { + /* disable interrupts */ + pch_spi_setclr_reg(board_dat->data->master, PCH_SPCR, 0, + PCH_ALL); + + /* free IRQ */ + free_irq(board_dat->pdev->irq, board_dat); + + dev_dbg(&board_dat->pdev->dev, + "%s free_irq invoked successfully\n", __func__); + + board_dat->irq_reg_sts = false; + } + + /* unmap PCI base address */ + if (board_dat->data->io_remap_addr != 0) { + pci_iounmap(board_dat->pdev, board_dat->data->io_remap_addr); + + board_dat->data->io_remap_addr = 0; + + dev_dbg(&board_dat->pdev->dev, + "%s pci_iounmap invoked successfully\n", __func__); + } + + /* release PCI region */ + if (board_dat->pci_req_sts) { + pci_release_regions(board_dat->pdev); + dev_dbg(&board_dat->pdev->dev, + "%s pci_release_regions invoked successfully\n", + __func__); + board_dat->pci_req_sts = false; + } +} + +static int pch_spi_get_resources(struct pch_spi_board_data *board_dat) +{ + void __iomem *io_remap_addr; + int retval; + dev_dbg(&board_dat->pdev->dev, "%s ENTRY\n", __func__); + + /* create workqueue */ + board_dat->data->wk = create_singlethread_workqueue(KBUILD_MODNAME); + if (!board_dat->data->wk) { + dev_err(&board_dat->pdev->dev, + "%s create_singlet hread_workqueue failed\n", __func__); + retval = -EBUSY; + goto err_return; + } + + dev_dbg(&board_dat->pdev->dev, + "%s create_singlethread_workqueue success\n", __func__); + + retval = pci_request_regions(board_dat->pdev, KBUILD_MODNAME); + if (retval != 0) { + dev_err(&board_dat->pdev->dev, + "%s request_region failed\n", __func__); + goto err_return; + } + + board_dat->pci_req_sts = true; + + io_remap_addr = pci_iomap(board_dat->pdev, 1, 0); + if (io_remap_addr == 0) { + dev_err(&board_dat->pdev->dev, + "%s pci_iomap failed\n", __func__); + retval = -ENOMEM; + goto err_return; + } + + /* calculate base address for all channels */ + board_dat->data->io_remap_addr = io_remap_addr; + + /* reset PCH SPI h/w */ + pch_spi_reset(board_dat->data->master); + dev_dbg(&board_dat->pdev->dev, + "%s pch_spi_reset invoked successfully\n", __func__); + + /* register IRQ */ + retval = request_irq(board_dat->pdev->irq, pch_spi_handler, + IRQF_SHARED, KBUILD_MODNAME, board_dat); + if (retval != 0) { + dev_err(&board_dat->pdev->dev, + "%s request_irq failed\n", __func__); + goto err_return; + } + + dev_dbg(&board_dat->pdev->dev, "%s request_irq returned=%d\n", + __func__, retval); + + board_dat->irq_reg_sts = true; + dev_dbg(&board_dat->pdev->dev, "%s data->irq_reg_sts=true\n", __func__); + +err_return: + if (retval != 0) { + dev_err(&board_dat->pdev->dev, + "%s FAIL:invoking pch_spi_free_resources\n", __func__); + pch_spi_free_resources(board_dat); + } + + dev_dbg(&board_dat->pdev->dev, "%s Return=%d\n", __func__, retval); + + return retval; +} + +static int pch_spi_probe(struct pci_dev *pdev, const struct pci_device_id *id) +{ + + struct spi_master *master; + + struct pch_spi_board_data *board_dat; + int retval; + + dev_dbg(&pdev->dev, "%s ENTRY\n", __func__); + + /* allocate memory for private data */ + board_dat = kzalloc(sizeof(struct pch_spi_board_data), GFP_KERNEL); + if (board_dat == NULL) { + dev_err(&pdev->dev, + " %s memory allocation for private data failed\n", + __func__); + retval = -ENOMEM; + goto err_kmalloc; + } + + dev_dbg(&pdev->dev, + "%s memory allocation for private data success\n", __func__); + + /* enable PCI device */ + retval = pci_enable_device(pdev); + if (retval != 0) { + dev_err(&pdev->dev, "%s pci_enable_device FAILED\n", __func__); + + goto err_pci_en_device; + } + + dev_dbg(&pdev->dev, "%s pci_enable_device returned=%d\n", + __func__, retval); + + board_dat->pdev = pdev; + + /* alllocate memory for SPI master */ + master = spi_alloc_master(&pdev->dev, sizeof(struct pch_spi_data)); + if (master == NULL) { + retval = -ENOMEM; + dev_err(&pdev->dev, "%s Fail.\n", __func__); + goto err_spi_alloc_master; + } + + dev_dbg(&pdev->dev, + "%s spi_alloc_master returned non NULL\n", __func__); + + /* initialize members of SPI master */ + master->bus_num = -1; + master->num_chipselect = PCH_MAX_CS; + master->setup = pch_spi_setup; + master->transfer = pch_spi_transfer; + dev_dbg(&pdev->dev, + "%s transfer member of SPI master initialized\n", __func__); + + board_dat->data = spi_master_get_devdata(master); + + board_dat->data->master = master; + board_dat->data->n_curnt_chip = 255; + board_dat->data->board_dat = board_dat; + board_dat->data->status = STATUS_RUNNING; + + INIT_LIST_HEAD(&board_dat->data->queue); + spin_lock_init(&board_dat->data->lock); + INIT_WORK(&board_dat->data->work, pch_spi_process_messages); + init_waitqueue_head(&board_dat->data->wait); + + /* allocate resources for PCH SPI */ + retval = pch_spi_get_resources(board_dat); + if (retval) { + dev_err(&pdev->dev, "%s fail(retval=%d)\n", __func__, retval); + goto err_spi_get_resources; + } + + dev_dbg(&pdev->dev, "%s pch_spi_get_resources returned=%d\n", + __func__, retval); + + /* save private data in dev */ + pci_set_drvdata(pdev, board_dat); + dev_dbg(&pdev->dev, "%s invoked pci_set_drvdata\n", __func__); + + /* set master mode */ + pch_spi_set_master_mode(master); + dev_dbg(&pdev->dev, + "%s invoked pch_spi_set_master_mode\n", __func__); + + /* Register the controller with the SPI core. */ + retval = spi_register_master(master); + if (retval != 0) { + dev_err(&pdev->dev, + "%s spi_register_master FAILED\n", __func__); + goto err_spi_reg_master; + } + + dev_dbg(&pdev->dev, "%s spi_register_master returned=%d\n", + __func__, retval); + + + return 0; + +err_spi_reg_master: + spi_unregister_master(master); +err_spi_get_resources: +err_spi_alloc_master: + spi_master_put(master); + pci_disable_device(pdev); +err_pci_en_device: + kfree(board_dat); +err_kmalloc: + return retval; +} + +static void pch_spi_remove(struct pci_dev *pdev) +{ + struct pch_spi_board_data *board_dat = pci_get_drvdata(pdev); + int count; + + dev_dbg(&pdev->dev, "%s ENTRY\n", __func__); + + if (!board_dat) { + dev_err(&pdev->dev, + "%s pci_get_drvdata returned NULL\n", __func__); + return; + } + + /* check for any pending messages; no action is taken if the queue + * is still full; but at least we tried. Unload anyway */ + count = 500; + spin_lock(&board_dat->data->lock); + board_dat->data->status = STATUS_EXITING; + while ((list_empty(&board_dat->data->queue) == 0) && --count) { + dev_dbg(&board_dat->pdev->dev, "%s :queue not empty\n", + __func__); + spin_unlock(&board_dat->data->lock); + msleep(PCH_SLEEP_TIME); + spin_lock(&board_dat->data->lock); + } + spin_unlock(&board_dat->data->lock); + + /* Free resources allocated for PCH SPI */ + pch_spi_free_resources(board_dat); + + spi_unregister_master(board_dat->data->master); + + /* free memory for private data */ + kfree(board_dat); + + pci_set_drvdata(pdev, NULL); + + /* disable PCI device */ + pci_disable_device(pdev); + + dev_dbg(&pdev->dev, "%s invoked pci_disable_device\n", __func__); +} + +#ifdef CONFIG_PM +static int pch_spi_suspend(struct pci_dev *pdev, pm_message_t state) +{ + u8 count; + int retval; + + struct pch_spi_board_data *board_dat = pci_get_drvdata(pdev); + + dev_dbg(&pdev->dev, "%s ENTRY\n", __func__); + + if (!board_dat) { + dev_err(&pdev->dev, + "%s pci_get_drvdata returned NULL\n", __func__); + return -EFAULT; + } + + retval = 0; + board_dat->suspend_sts = true; + + /* check if the current message is processed: + Only after thats done the transfer will be suspended */ + count = 255; + while ((--count) > 0) { + if (!(board_dat->data->bcurrent_msg_processing)) { + dev_dbg(&pdev->dev, "%s board_dat->data->bCurrent_" + "msg_processing = false\n", __func__); + break; + } else { + dev_dbg(&pdev->dev, "%s board_dat->data->bCurrent_msg_" + "processing = true\n", __func__); + } + msleep(PCH_SLEEP_TIME); + } + + /* Free IRQ */ + if (board_dat->irq_reg_sts) { + /* disable all interrupts */ + pch_spi_setclr_reg(board_dat->data->master, PCH_SPCR, 0, + PCH_ALL); + pch_spi_reset(board_dat->data->master); + + free_irq(board_dat->pdev->irq, board_dat); + + board_dat->irq_reg_sts = false; + dev_dbg(&pdev->dev, + "%s free_irq invoked successfully.\n", __func__); + } + + /* save config space */ + retval = pci_save_state(pdev); + + if (retval == 0) { + dev_dbg(&pdev->dev, "%s pci_save_state returned=%d\n", + __func__, retval); + /* disable PM notifications */ + pci_enable_wake(pdev, PCI_D3hot, 0); + dev_dbg(&pdev->dev, + "%s pci_enable_wake invoked successfully\n", __func__); + /* disable PCI device */ + pci_disable_device(pdev); + dev_dbg(&pdev->dev, + "%s pci_disable_device invoked successfully\n", + __func__); + /* move device to D3hot state */ + pci_set_power_state(pdev, PCI_D3hot); + dev_dbg(&pdev->dev, + "%s pci_set_power_state invoked successfully\n", + __func__); + } else { + dev_err(&pdev->dev, "%s pci_save_state failed\n", __func__); + } + + dev_dbg(&pdev->dev, "%s return=%d\n", __func__, retval); + + return retval; +} + +static int pch_spi_resume(struct pci_dev *pdev) +{ + int retval; + + struct pch_spi_board_data *board = pci_get_drvdata(pdev); + dev_dbg(&pdev->dev, "%s ENTRY\n", __func__); + + if (!board) { + dev_err(&pdev->dev, + "%s pci_get_drvdata returned NULL\n", __func__); + return -EFAULT; + } + + /* move device to DO power state */ + pci_set_power_state(pdev, PCI_D0); + + /* restore state */ + pci_restore_state(pdev); + + retval = pci_enable_device(pdev); + if (retval < 0) { + dev_err(&pdev->dev, + "%s pci_enable_device failed\n", __func__); + } else { + /* disable PM notifications */ + pci_enable_wake(pdev, PCI_D3hot, 0); + + /* register IRQ handler */ + if (!board->irq_reg_sts) { + /* register IRQ */ + retval = request_irq(board->pdev->irq, pch_spi_handler, + IRQF_SHARED, KBUILD_MODNAME, + board); + if (retval < 0) { + dev_err(&pdev->dev, + "%s request_irq failed\n", __func__); + return retval; + } + board->irq_reg_sts = true; + + /* reset PCH SPI h/w */ + pch_spi_reset(board->data->master); + pch_spi_set_master_mode(board->data->master); + + /* set suspend status to false */ + board->suspend_sts = false; + + } + } + + dev_dbg(&pdev->dev, "%s returning=%d\n", __func__, retval); + + return retval; +} +#else +#define pch_spi_suspend NULL +#define pch_spi_resume NULL + +#endif + +static struct pci_driver pch_spi_pcidev = { + .name = "pch_spi", + .id_table = pch_spi_pcidev_id, + .probe = pch_spi_probe, + .remove = pch_spi_remove, + .suspend = pch_spi_suspend, + .resume = pch_spi_resume, +}; + +static int __init pch_spi_init(void) +{ + return pci_register_driver(&pch_spi_pcidev); +} +module_init(pch_spi_init); + +static void __exit pch_spi_exit(void) +{ + pci_unregister_driver(&pch_spi_pcidev); +} +module_exit(pch_spi_exit); + +MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION("Topcliff PCH SPI PCI Driver"); diff --git a/drivers/ssb/main.c b/drivers/ssb/main.c index 7892ac163522..c68b3dc19e11 100644 --- a/drivers/ssb/main.c +++ b/drivers/ssb/main.c @@ -20,7 +20,6 @@ #include <linux/mmc/sdio_func.h> #include <linux/slab.h> -#include <pcmcia/cs.h> #include <pcmcia/cistpl.h> #include <pcmcia/ds.h> diff --git a/drivers/ssb/pcmcia.c b/drivers/ssb/pcmcia.c index 526682d68de8..c7345dbf43fa 100644 --- a/drivers/ssb/pcmcia.c +++ b/drivers/ssb/pcmcia.c @@ -13,7 +13,6 @@ #include <linux/io.h> #include <linux/etherdevice.h> -#include <pcmcia/cs.h> #include <pcmcia/cistpl.h> #include <pcmcia/ciscode.h> #include <pcmcia/ds.h> diff --git a/drivers/ssb/scan.c b/drivers/ssb/scan.c index 9738cad4ba13..ee079ab9fb28 100644 --- a/drivers/ssb/scan.c +++ b/drivers/ssb/scan.c @@ -17,7 +17,6 @@ #include <linux/pci.h> #include <linux/io.h> -#include <pcmcia/cs.h> #include <pcmcia/cistpl.h> #include <pcmcia/ds.h> diff --git a/drivers/staging/comedi/drivers/cb_das16_cs.c b/drivers/staging/comedi/drivers/cb_das16_cs.c index f8ede1182ccc..0345b4caba73 100644 --- a/drivers/staging/comedi/drivers/cb_das16_cs.c +++ b/drivers/staging/comedi/drivers/cb_das16_cs.c @@ -37,7 +37,6 @@ Status: experimental #include <linux/delay.h> #include <linux/pci.h> -#include <pcmcia/cs.h> #include <pcmcia/cistpl.h> #include <pcmcia/ds.h> @@ -692,10 +691,6 @@ static int das16cs_pcmcia_attach(struct pcmcia_device *link) local->link = link; link->priv = local; - /* Initialize the pcmcia_device structure */ - link->conf.Attributes = 0; - link->conf.IntType = INT_MEMORY_AND_IO; - cur_dev = link; das16cs_pcmcia_config(link); @@ -715,37 +710,12 @@ static void das16cs_pcmcia_detach(struct pcmcia_device *link) static int das16cs_pcmcia_config_loop(struct pcmcia_device *p_dev, - cistpl_cftable_entry_t *cfg, - cistpl_cftable_entry_t *dflt, - unsigned int vcc, void *priv_data) { - if (cfg->index == 0) + if (p_dev->config_index == 0) return -EINVAL; - /* Do we need to allocate an interrupt? */ - p_dev->conf.Attributes |= CONF_ENABLE_IRQ; - - /* IO window settings */ - p_dev->resource[0]->end = p_dev->resource[1]->end = 0; - if ((cfg->io.nwin > 0) || (dflt->io.nwin > 0)) { - cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &dflt->io; - p_dev->io_lines = io->flags & CISTPL_IO_LINES_MASK; - p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH; - p_dev->resource[0]->flags |= - pcmcia_io_cfg_data_width(io->flags); - p_dev->resource[0]->start = io->win[0].base; - p_dev->resource[0]->end = io->win[0].len; - if (io->nwin > 1) { - p_dev->resource[1]->flags = p_dev->resource[0]->flags; - p_dev->resource[1]->start = io->win[1].base; - p_dev->resource[1]->end = io->win[1].len; - } - /* This reserves IO space but doesn't actually enable it */ - return pcmcia_request_io(p_dev); - } - - return 0; + return pcmcia_request_io(p_dev); } static void das16cs_pcmcia_config(struct pcmcia_device *link) @@ -754,6 +724,9 @@ static void das16cs_pcmcia_config(struct pcmcia_device *link) dev_dbg(&link->dev, "das16cs_pcmcia_config\n"); + /* Do we need to allocate an interrupt? */ + link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_IO; + ret = pcmcia_loop_config(link, das16cs_pcmcia_config_loop, NULL); if (ret) { dev_warn(&link->dev, "no configuration found\n"); @@ -763,25 +736,10 @@ static void das16cs_pcmcia_config(struct pcmcia_device *link) if (!link->irq) goto failed; - /* - This actually configures the PCMCIA socket -- setting up - the I/O windows and the interrupt mapping, and putting the - card and host interface into "Memory and IO" mode. - */ - ret = pcmcia_request_configuration(link, &link->conf); + ret = pcmcia_enable_device(link); if (ret) goto failed; - /* Finally, report what we've done */ - dev_info(&link->dev, "index 0x%02x", link->conf.ConfigIndex); - if (link->conf.Attributes & CONF_ENABLE_IRQ) - printk(", irq %u", link->irq); - if (link->resource[0]) - printk(", io %pR", link->resource[0]); - if (link->resource[1]) - printk(", io %pR", link->resource[1]); - printk("\n"); - return; failed: @@ -832,9 +790,7 @@ struct pcmcia_driver das16cs_driver = { .resume = das16cs_pcmcia_resume, .id_table = das16cs_id_table, .owner = THIS_MODULE, - .drv = { - .name = "cb_das16_cs", - }, + .name = "cb_das16_cs", }; static int __init init_das16cs_pcmcia_cs(void) diff --git a/drivers/staging/comedi/drivers/das08_cs.c b/drivers/staging/comedi/drivers/das08_cs.c index 48d9fb1227df..0b32a2df7768 100644 --- a/drivers/staging/comedi/drivers/das08_cs.c +++ b/drivers/staging/comedi/drivers/das08_cs.c @@ -48,7 +48,6 @@ Command support does not exist, but could be added for this board. #include "das08.h" /* pcmcia includes */ -#include <pcmcia/cs.h> #include <pcmcia/cistpl.h> #include <pcmcia/ds.h> @@ -115,40 +114,15 @@ static void das08_pcmcia_release(struct pcmcia_device *link); static int das08_pcmcia_suspend(struct pcmcia_device *p_dev); static int das08_pcmcia_resume(struct pcmcia_device *p_dev); -/* - The attach() and detach() entry points are used to create and destroy - "instances" of the driver, where each instance represents everything - needed to manage one actual PCMCIA card. -*/ - static int das08_pcmcia_attach(struct pcmcia_device *); static void das08_pcmcia_detach(struct pcmcia_device *); -/* - You'll also need to prototype all the functions that will actually - be used to talk to your device. See 'memory_cs' for a good example - of a fully self-sufficient driver; the other drivers rely more or - less on other parts of the kernel. -*/ - struct local_info_t { struct pcmcia_device *link; int stop; struct bus_operations *bus; }; -/*====================================================================== - - das08_pcmcia_attach() creates an "instance" of the driver, allocating - local data structures for one device. The device is registered - with Card Services. - - The dev_link structure is initialized, but we don't actually - configure the card at this point -- we wait until we receive a - card insertion event. - -======================================================================*/ - static int das08_pcmcia_attach(struct pcmcia_device *link) { struct local_info_t *local; @@ -162,16 +136,6 @@ static int das08_pcmcia_attach(struct pcmcia_device *link) local->link = link; link->priv = local; - /* - General socket configuration defaults can go here. In this - client, we assume very little, and rely on the CIS for almost - everything. In most clients, many details (i.e., number, sizes, - and attributes of IO windows) are fixed by the nature of the - device, and can be hard-wired here. - */ - link->conf.Attributes = 0; - link->conf.IntType = INT_MEMORY_AND_IO; - cur_dev = link; das08_pcmcia_config(link); @@ -179,15 +143,6 @@ static int das08_pcmcia_attach(struct pcmcia_device *link) return 0; } /* das08_pcmcia_attach */ -/*====================================================================== - - This deletes a driver "instance". The device is de-registered - with Card Services. If it has been released, all local data - structures are freed. Otherwise, the structures will be freed - when the device is released. - -======================================================================*/ - static void das08_pcmcia_detach(struct pcmcia_device *link) { @@ -203,46 +158,13 @@ static void das08_pcmcia_detach(struct pcmcia_device *link) static int das08_pcmcia_config_loop(struct pcmcia_device *p_dev, - cistpl_cftable_entry_t *cfg, - cistpl_cftable_entry_t *dflt, - unsigned int vcc, void *priv_data) { - if (cfg->index == 0) - return -ENODEV; - - /* Do we need to allocate an interrupt? */ - p_dev->conf.Attributes |= CONF_ENABLE_IRQ; - - /* IO window settings */ - p_dev->resource[0]->end = p_dev->resource[1]->end = 0; - if ((cfg->io.nwin > 0) || (dflt->io.nwin > 0)) { - cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &dflt->io; - p_dev->io_lines = io->flags & CISTPL_IO_LINES_MASK; - p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH; - p_dev->resource[0]->flags |= - pcmcia_io_cfg_data_width(io->flags); - p_dev->resource[0]->start = io->win[0].base; - p_dev->resource[0]->end = io->win[0].len; - if (io->nwin > 1) { - p_dev->resource[1]->flags = p_dev->resource[0]->flags; - p_dev->resource[1]->start = io->win[1].base; - p_dev->resource[1]->end = io->win[1].len; - } - /* This reserves IO space but doesn't actually enable it */ - return pcmcia_request_io(p_dev); - } - return 0; -} - - -/*====================================================================== - - das08_pcmcia_config() is scheduled to run after a CARD_INSERTION event - is received, to configure the PCMCIA socket, and to make the - device available to the system. + if (p_dev->config_index == 0) + return -EINVAL; -======================================================================*/ + return pcmcia_request_io(p_dev); +} static void das08_pcmcia_config(struct pcmcia_device *link) { @@ -250,6 +172,8 @@ static void das08_pcmcia_config(struct pcmcia_device *link) dev_dbg(&link->dev, "das08_pcmcia_config\n"); + link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_IO; + ret = pcmcia_loop_config(link, das08_pcmcia_config_loop, NULL); if (ret) { dev_warn(&link->dev, "no configuration found\n"); @@ -259,25 +183,10 @@ static void das08_pcmcia_config(struct pcmcia_device *link) if (!link->irq) goto failed; - /* - This actually configures the PCMCIA socket -- setting up - the I/O windows and the interrupt mapping, and putting the - card and host interface into "Memory and IO" mode. - */ - ret = pcmcia_request_configuration(link, &link->conf); + ret = pcmcia_enable_device(link); if (ret) goto failed; - /* Finally, report what we've done */ - dev_info(&link->dev, "index 0x%02x", link->conf.ConfigIndex); - if (link->conf.Attributes & CONF_ENABLE_IRQ) - printk(", irq %u", link->irq); - if (link->resource[0]) - printk(", io %pR", link->resource[0]); - if (link->resource[1]) - printk(" & %pR", link->resource[1]); - printk("\n"); - return; failed: @@ -285,32 +194,12 @@ failed: } /* das08_pcmcia_config */ -/*====================================================================== - - After a card is removed, das08_pcmcia_release() will unregister the - device, and release the PCMCIA configuration. If the device is - still open, this will be postponed until it is closed. - -======================================================================*/ - static void das08_pcmcia_release(struct pcmcia_device *link) { dev_dbg(&link->dev, "das08_pcmcia_release\n"); pcmcia_disable_device(link); } /* das08_pcmcia_release */ -/*====================================================================== - - The card status event handler. Mostly, this schedules other - stuff to run after an event is received. - - When a CARD_REMOVAL event is received, we immediately set a - private flag to block future accesses to this device. All the - functions that actually access the device should check this flag - to make sure the card is still present. - -======================================================================*/ - static int das08_pcmcia_suspend(struct pcmcia_device *link) { struct local_info_t *local = link->priv; @@ -348,9 +237,7 @@ struct pcmcia_driver das08_cs_driver = { .resume = das08_pcmcia_resume, .id_table = das08_cs_id_table, .owner = THIS_MODULE, - .drv = { - .name = "pcm-das08", - }, + .name = "pcm-das08", }; static int __init init_das08_pcmcia_cs(void) diff --git a/drivers/staging/comedi/drivers/ni_daq_700.c b/drivers/staging/comedi/drivers/ni_daq_700.c index cc15666e5cc1..fc772a8a55c6 100644 --- a/drivers/staging/comedi/drivers/ni_daq_700.c +++ b/drivers/staging/comedi/drivers/ni_daq_700.c @@ -47,7 +47,6 @@ IRQ is assigned but not used. #include <linux/ioport.h> -#include <pcmcia/cs.h> #include <pcmcia/cistpl.h> #include <pcmcia/cisreg.h> #include <pcmcia/ds.h> @@ -435,47 +434,20 @@ static int dio700_detach(struct comedi_device *dev) return 0; }; -/* PCMCIA crap -- watch your words, please! */ - static void dio700_config(struct pcmcia_device *link); static void dio700_release(struct pcmcia_device *link); static int dio700_cs_suspend(struct pcmcia_device *p_dev); static int dio700_cs_resume(struct pcmcia_device *p_dev); -/* - The attach() and detach() entry points are used to create and destroy - "instances" of the driver, where each instance represents everything - needed to manage one actual PCMCIA card. -*/ - static int dio700_cs_attach(struct pcmcia_device *); static void dio700_cs_detach(struct pcmcia_device *); -/* - You'll also need to prototype all the functions that will actually - be used to talk to your device. See 'memory_cs' for a good example - of a fully self-sufficient driver; the other drivers rely more or - less on other parts of the kernel. -*/ - struct local_info_t { struct pcmcia_device *link; int stop; struct bus_operations *bus; }; -/*====================================================================== - - dio700_cs_attach() creates an "instance" of the driver, allocating - local data structures for one device. The device is registered - with Card Services. - - The dev_link structure is initialized, but we don't actually - configure the card at this point -- we wait until we receive a - card insertion event. - -======================================================================*/ - static int dio700_cs_attach(struct pcmcia_device *link) { struct local_info_t *local; @@ -491,16 +463,6 @@ static int dio700_cs_attach(struct pcmcia_device *link) local->link = link; link->priv = local; - /* - General socket configuration defaults can go here. In this - client, we assume very little, and rely on the CIS for almost - everything. In most clients, many details (i.e., number, sizes, - and attributes of IO windows) are fixed by the nature of the - device, and can be hard-wired here. - */ - link->conf.Attributes = 0; - link->conf.IntType = INT_MEMORY_AND_IO; - pcmcia_cur_dev = link; dio700_config(link); @@ -508,15 +470,6 @@ static int dio700_cs_attach(struct pcmcia_device *link) return 0; } /* dio700_cs_attach */ -/*====================================================================== - - This deletes a driver "instance". The device is de-registered - with Card Services. If it has been released, all local data - structures are freed. Otherwise, the structures will be freed - when the device is released. - -======================================================================*/ - static void dio700_cs_detach(struct pcmcia_device *link) { @@ -532,54 +485,13 @@ static void dio700_cs_detach(struct pcmcia_device *link) } /* dio700_cs_detach */ -/*====================================================================== - - dio700_config() is scheduled to run after a CARD_INSERTION event - is received, to configure the PCMCIA socket, and to make the - device available to the system. - -======================================================================*/ - static int dio700_pcmcia_config_loop(struct pcmcia_device *p_dev, - cistpl_cftable_entry_t *cfg, - cistpl_cftable_entry_t *dflt, - unsigned int vcc, void *priv_data) { - if (cfg->index == 0) - return -ENODEV; - - /* Does this card need audio output? */ - if (cfg->flags & CISTPL_CFTABLE_AUDIO) { - p_dev->conf.Attributes |= CONF_ENABLE_SPKR; - p_dev->conf.Status = CCSR_AUDIO_ENA; - } - - /* Do we need to allocate an interrupt? */ - p_dev->conf.Attributes |= CONF_ENABLE_IRQ; - - /* IO window settings */ - p_dev->resource[0]->end = p_dev->resource[1]->end = 0; - if ((cfg->io.nwin > 0) || (dflt->io.nwin > 0)) { - cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &dflt->io; - p_dev->io_lines = io->flags & CISTPL_IO_LINES_MASK; - p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH; - p_dev->resource[0]->flags |= - pcmcia_io_cfg_data_width(io->flags); - p_dev->resource[0]->start = io->win[0].base; - p_dev->resource[0]->end = io->win[0].len; - if (io->nwin > 1) { - p_dev->resource[1]->flags = p_dev->resource[0]->flags; - p_dev->resource[1]->start = io->win[1].base; - p_dev->resource[1]->end = io->win[1].len; - } - /* This reserves IO space but doesn't actually enable it */ - if (pcmcia_request_io(p_dev) != 0) - return -ENODEV; - } + if (p_dev->config_index == 0) + return -EINVAL; - /* If we got this far, we're cool! */ - return 0; + return pcmcia_request_io(p_dev); } static void dio700_config(struct pcmcia_device *link) @@ -591,6 +503,9 @@ static void dio700_config(struct pcmcia_device *link) dev_dbg(&link->dev, "dio700_config\n"); + link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_AUDIO | + CONF_AUTO_SET_IO; + ret = pcmcia_loop_config(link, dio700_pcmcia_config_loop, NULL); if (ret) { dev_warn(&link->dev, "no configuration found\n"); @@ -600,25 +515,10 @@ static void dio700_config(struct pcmcia_device *link) if (!link->irq) goto failed; - /* - This actually configures the PCMCIA socket -- setting up - the I/O windows and the interrupt mapping, and putting the - card and host interface into "Memory and IO" mode. - */ - ret = pcmcia_request_configuration(link, &link->conf); + ret = pcmcia_enable_device(link); if (ret != 0) goto failed; - /* Finally, report what we've done */ - dev_info(&link->dev, "index 0x%02x", link->conf.ConfigIndex); - if (link->conf.Attributes & CONF_ENABLE_IRQ) - printk(", irq %d", link->irq); - if (link->resource[0]) - printk(", io %pR", link->resource[0]); - if (link->resource[1]) - printk(" & %pR", link->resource[1]); - printk("\n"); - return; failed: @@ -634,18 +534,6 @@ static void dio700_release(struct pcmcia_device *link) pcmcia_disable_device(link); } /* dio700_release */ -/*====================================================================== - - The card status event handler. Mostly, this schedules other - stuff to run after an event is received. - - When a CARD_REMOVAL event is received, we immediately set a - private flag to block future accesses to this device. All the - functions that actually access the device should check this flag - to make sure the card is still present. - -======================================================================*/ - static int dio700_cs_suspend(struct pcmcia_device *link) { struct local_info_t *local = link->priv; @@ -685,9 +573,7 @@ struct pcmcia_driver dio700_cs_driver = { .resume = dio700_cs_resume, .id_table = dio700_cs_ids, .owner = THIS_MODULE, - .drv = { - .name = "ni_daq_700", - }, + .name = "ni_daq_700", }; static int __init init_dio700_cs(void) diff --git a/drivers/staging/comedi/drivers/ni_daq_dio24.c b/drivers/staging/comedi/drivers/ni_daq_dio24.c index 773ae2044e0e..c9c28584db67 100644 --- a/drivers/staging/comedi/drivers/ni_daq_dio24.c +++ b/drivers/staging/comedi/drivers/ni_daq_dio24.c @@ -48,7 +48,6 @@ the PCMCIA interface. #include "8255.h" -#include <pcmcia/cs.h> #include <pcmcia/cistpl.h> #include <pcmcia/cisreg.h> #include <pcmcia/ds.h> @@ -187,47 +186,20 @@ static int dio24_detach(struct comedi_device *dev) return 0; }; -/* PCMCIA crap -- watch your words! */ - static void dio24_config(struct pcmcia_device *link); static void dio24_release(struct pcmcia_device *link); static int dio24_cs_suspend(struct pcmcia_device *p_dev); static int dio24_cs_resume(struct pcmcia_device *p_dev); -/* - The attach() and detach() entry points are used to create and destroy - "instances" of the driver, where each instance represents everything - needed to manage one actual PCMCIA card. -*/ - static int dio24_cs_attach(struct pcmcia_device *); static void dio24_cs_detach(struct pcmcia_device *); -/* - You'll also need to prototype all the functions that will actually - be used to talk to your device. See 'memory_cs' for a good example - of a fully self-sufficient driver; the other drivers rely more or - less on other parts of the kernel. -*/ - struct local_info_t { struct pcmcia_device *link; int stop; struct bus_operations *bus; }; -/*====================================================================== - - dio24_cs_attach() creates an "instance" of the driver, allocating - local data structures for one device. The device is registered - with Card Services. - - The dev_link structure is initialized, but we don't actually - configure the card at this point -- we wait until we receive a - card insertion event. - -======================================================================*/ - static int dio24_cs_attach(struct pcmcia_device *link) { struct local_info_t *local; @@ -243,16 +215,6 @@ static int dio24_cs_attach(struct pcmcia_device *link) local->link = link; link->priv = local; - /* - General socket configuration defaults can go here. In this - client, we assume very little, and rely on the CIS for almost - everything. In most clients, many details (i.e., number, sizes, - and attributes of IO windows) are fixed by the nature of the - device, and can be hard-wired here. - */ - link->conf.Attributes = 0; - link->conf.IntType = INT_MEMORY_AND_IO; - pcmcia_cur_dev = link; dio24_config(link); @@ -260,15 +222,6 @@ static int dio24_cs_attach(struct pcmcia_device *link) return 0; } /* dio24_cs_attach */ -/*====================================================================== - - This deletes a driver "instance". The device is de-registered - with Card Services. If it has been released, all local data - structures are freed. Otherwise, the structures will be freed - when the device is released. - -======================================================================*/ - static void dio24_cs_detach(struct pcmcia_device *link) { @@ -284,54 +237,13 @@ static void dio24_cs_detach(struct pcmcia_device *link) } /* dio24_cs_detach */ -/*====================================================================== - - dio24_config() is scheduled to run after a CARD_INSERTION event - is received, to configure the PCMCIA socket, and to make the - device available to the system. - -======================================================================*/ - static int dio24_pcmcia_config_loop(struct pcmcia_device *p_dev, - cistpl_cftable_entry_t *cfg, - cistpl_cftable_entry_t *dflt, - unsigned int vcc, void *priv_data) { - if (cfg->index == 0) - return -ENODEV; - - /* Does this card need audio output? */ - if (cfg->flags & CISTPL_CFTABLE_AUDIO) { - p_dev->conf.Attributes |= CONF_ENABLE_SPKR; - p_dev->conf.Status = CCSR_AUDIO_ENA; - } - - /* Do we need to allocate an interrupt? */ - p_dev->conf.Attributes |= CONF_ENABLE_IRQ; - - /* IO window settings */ - p_dev->resource[0]->end = p_dev->resource[1]->end = 0; - if ((cfg->io.nwin > 0) || (dflt->io.nwin > 0)) { - cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &dflt->io; - p_dev->io_lines = io->flags & CISTPL_IO_LINES_MASK; - p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH; - p_dev->resource[0]->flags |= - pcmcia_io_cfg_data_width(io->flags); - p_dev->resource[0]->start = io->win[0].base; - p_dev->resource[0]->end = io->win[0].len; - if (io->nwin > 1) { - p_dev->resource[1]->flags = p_dev->resource[0]->flags; - p_dev->resource[1]->start = io->win[1].base; - p_dev->resource[1]->end = io->win[1].len; - } - /* This reserves IO space but doesn't actually enable it */ - if (pcmcia_request_io(p_dev) != 0) - return -ENODEV; - } + if (p_dev->config_index == 0) + return -EINVAL; - /* If we got this far, we're cool! */ - return 0; + return pcmcia_request_io(p_dev); } static void dio24_config(struct pcmcia_device *link) @@ -342,6 +254,9 @@ static void dio24_config(struct pcmcia_device *link) dev_dbg(&link->dev, "dio24_config\n"); + link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_AUDIO | + CONF_AUTO_SET_IO; + ret = pcmcia_loop_config(link, dio24_pcmcia_config_loop, NULL); if (ret) { dev_warn(&link->dev, "no configuration found\n"); @@ -351,25 +266,10 @@ static void dio24_config(struct pcmcia_device *link) if (!link->irq) goto failed; - /* - This actually configures the PCMCIA socket -- setting up - the I/O windows and the interrupt mapping, and putting the - card and host interface into "Memory and IO" mode. - */ - ret = pcmcia_request_configuration(link, &link->conf); + ret = pcmcia_enable_device(link); if (ret) goto failed; - /* Finally, report what we've done */ - dev_info(&link->dev, "index 0x%02x", link->conf.ConfigIndex); - if (link->conf.Attributes & CONF_ENABLE_IRQ) - printk(", irq %d", link->irq); - if (link->resource[0]) - printk(" & %pR", link->resource[0]); - if (link->resource[1]) - printk(" & %pR", link->resource[1]); - printk("\n"); - return; failed: @@ -385,18 +285,6 @@ static void dio24_release(struct pcmcia_device *link) pcmcia_disable_device(link); } /* dio24_release */ -/*====================================================================== - - The card status event handler. Mostly, this schedules other - stuff to run after an event is received. - - When a CARD_REMOVAL event is received, we immediately set a - private flag to block future accesses to this device. All the - functions that actually access the device should check this flag - to make sure the card is still present. - -======================================================================*/ - static int dio24_cs_suspend(struct pcmcia_device *link) { struct local_info_t *local = link->priv; @@ -435,9 +323,7 @@ struct pcmcia_driver dio24_cs_driver = { .resume = dio24_cs_resume, .id_table = dio24_cs_ids, .owner = THIS_MODULE, - .drv = { - .name = "ni_daq_dio24", - }, + .name = "ni_daq_dio24", }; static int __init init_dio24_cs(void) diff --git a/drivers/staging/comedi/drivers/ni_labpc_cs.c b/drivers/staging/comedi/drivers/ni_labpc_cs.c index 68c4ecbd93ae..6facbc8bf776 100644 --- a/drivers/staging/comedi/drivers/ni_labpc_cs.c +++ b/drivers/staging/comedi/drivers/ni_labpc_cs.c @@ -71,7 +71,6 @@ NI manuals: #include "comedi_fc.h" #include "ni_labpc.h" -#include <pcmcia/cs.h> #include <pcmcia/cistpl.h> #include <pcmcia/cisreg.h> #include <pcmcia/ds.h> @@ -153,59 +152,20 @@ static int labpc_attach(struct comedi_device *dev, struct comedi_devconfig *it) return labpc_common_attach(dev, iobase, irq, 0); } -/*====================================================================*/ - -/* - The event() function is this driver's Card Services event handler. - It will be called by Card Services when an appropriate card status - event is received. The config() and release() entry points are - used to configure or release a socket, in response to card - insertion and ejection events. They are invoked from the dummy - event handler. - - Kernel version 2.6.16 upwards uses suspend() and resume() functions - instead of an event() function. -*/ - static void labpc_config(struct pcmcia_device *link); static void labpc_release(struct pcmcia_device *link); static int labpc_cs_suspend(struct pcmcia_device *p_dev); static int labpc_cs_resume(struct pcmcia_device *p_dev); -/* - The attach() and detach() entry points are used to create and destroy - "instances" of the driver, where each instance represents everything - needed to manage one actual PCMCIA card. -*/ - static int labpc_cs_attach(struct pcmcia_device *); static void labpc_cs_detach(struct pcmcia_device *); -/* - You'll also need to prototype all the functions that will actually - be used to talk to your device. See 'memory_cs' for a good example - of a fully self-sufficient driver; the other drivers rely more or - less on other parts of the kernel. -*/ - struct local_info_t { struct pcmcia_device *link; int stop; struct bus_operations *bus; }; -/*====================================================================== - - labpc_cs_attach() creates an "instance" of the driver, allocating - local data structures for one device. The device is registered - with Card Services. - - The dev_link structure is initialized, but we don't actually - configure the card at this point -- we wait until we receive a - card insertion event. - -======================================================================*/ - static int labpc_cs_attach(struct pcmcia_device *link) { struct local_info_t *local; @@ -219,16 +179,6 @@ static int labpc_cs_attach(struct pcmcia_device *link) local->link = link; link->priv = local; - /* - General socket configuration defaults can go here. In this - client, we assume very little, and rely on the CIS for almost - everything. In most clients, many details (i.e., number, sizes, - and attributes of IO windows) are fixed by the nature of the - device, and can be hard-wired here. - */ - link->conf.Attributes = 0; - link->conf.IntType = INT_MEMORY_AND_IO; - pcmcia_cur_dev = link; labpc_config(link); @@ -236,15 +186,6 @@ static int labpc_cs_attach(struct pcmcia_device *link) return 0; } /* labpc_cs_attach */ -/*====================================================================== - - This deletes a driver "instance". The device is de-registered - with Card Services. If it has been released, all local data - structures are freed. Otherwise, the structures will be freed - when the device is released. - -======================================================================*/ - static void labpc_cs_detach(struct pcmcia_device *link) { dev_dbg(&link->dev, "labpc_cs_detach\n"); @@ -263,54 +204,13 @@ static void labpc_cs_detach(struct pcmcia_device *link) } /* labpc_cs_detach */ -/*====================================================================== - - labpc_config() is scheduled to run after a CARD_INSERTION event - is received, to configure the PCMCIA socket, and to make the - device available to the system. - -======================================================================*/ - static int labpc_pcmcia_config_loop(struct pcmcia_device *p_dev, - cistpl_cftable_entry_t *cfg, - cistpl_cftable_entry_t *dflt, - unsigned int vcc, void *priv_data) { - if (cfg->index == 0) - return -ENODEV; - - /* Does this card need audio output? */ - if (cfg->flags & CISTPL_CFTABLE_AUDIO) { - p_dev->conf.Attributes |= CONF_ENABLE_SPKR; - p_dev->conf.Status = CCSR_AUDIO_ENA; - } - - /* Do we need to allocate an interrupt? */ - p_dev->conf.Attributes |= CONF_ENABLE_IRQ | CONF_ENABLE_PULSE_IRQ; - - /* IO window settings */ - p_dev->resource[0]->end = p_dev->resource[1]->end = 0; - if ((cfg->io.nwin > 0) || (dflt->io.nwin > 0)) { - cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &dflt->io; - p_dev->io_lines = io->flags & CISTPL_IO_LINES_MASK; - p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH; - p_dev->resource[0]->flags |= - pcmcia_io_cfg_data_width(io->flags); - p_dev->resource[0]->start = io->win[0].base; - p_dev->resource[0]->end = io->win[0].len; - if (io->nwin > 1) { - p_dev->resource[1]->flags = p_dev->resource[0]->flags; - p_dev->resource[1]->start = io->win[1].base; - p_dev->resource[1]->end = io->win[1].len; - } - /* This reserves IO space but doesn't actually enable it */ - if (pcmcia_request_io(p_dev) != 0) - return -ENODEV; - } + if (p_dev->config_index == 0) + return -EINVAL; - /* If we got this far, we're cool! */ - return 0; + return pcmcia_request_io(p_dev); } @@ -320,6 +220,9 @@ static void labpc_config(struct pcmcia_device *link) dev_dbg(&link->dev, "labpc_config\n"); + link->config_flags |= CONF_ENABLE_IRQ | CONF_ENABLE_PULSE_IRQ | + CONF_AUTO_AUDIO | CONF_AUTO_SET_IO; + ret = pcmcia_loop_config(link, labpc_pcmcia_config_loop, NULL); if (ret) { dev_warn(&link->dev, "no configuration found\n"); @@ -329,25 +232,10 @@ static void labpc_config(struct pcmcia_device *link) if (!link->irq) goto failed; - /* - This actually configures the PCMCIA socket -- setting up - the I/O windows and the interrupt mapping, and putting the - card and host interface into "Memory and IO" mode. - */ - ret = pcmcia_request_configuration(link, &link->conf); + ret = pcmcia_enable_device(link); if (ret) goto failed; - /* Finally, report what we've done */ - dev_info(&link->dev, "index 0x%02x", link->conf.ConfigIndex); - if (link->conf.Attributes & CONF_ENABLE_IRQ) - printk(", irq %d", link->irq); - if (link->resource[0]) - printk(" & %pR", link->resource[0]); - if (link->resource[1]) - printk(" & %pR", link->resource[1]); - printk("\n"); - return; failed: @@ -362,18 +250,6 @@ static void labpc_release(struct pcmcia_device *link) pcmcia_disable_device(link); } /* labpc_release */ -/*====================================================================== - - The card status event handler. Mostly, this schedules other - stuff to run after an event is received. - - When a CARD_REMOVAL event is received, we immediately set a - private flag to block future accesses to this device. All the - functions that actually access the device should check this flag - to make sure the card is still present. - -======================================================================*/ - static int labpc_cs_suspend(struct pcmcia_device *link) { struct local_info_t *local = link->priv; @@ -391,8 +267,6 @@ static int labpc_cs_resume(struct pcmcia_device *link) return 0; } /* labpc_cs_resume */ -/*====================================================================*/ - static struct pcmcia_device_id labpc_cs_ids[] = { /* N.B. These IDs should match those in labpc_cs_boards (ni_labpc.c) */ PCMCIA_DEVICE_MANF_CARD(0x010b, 0x0103), /* daqcard-1200 */ @@ -411,9 +285,7 @@ struct pcmcia_driver labpc_cs_driver = { .resume = labpc_cs_resume, .id_table = labpc_cs_ids, .owner = THIS_MODULE, - .drv = { - .name = "daqcard-1200", - }, + .name = "daqcard-1200", }; static int __init init_labpc_cs(void) diff --git a/drivers/staging/comedi/drivers/ni_mio_cs.c b/drivers/staging/comedi/drivers/ni_mio_cs.c index 1f2426352eb5..49563273f605 100644 --- a/drivers/staging/comedi/drivers/ni_mio_cs.c +++ b/drivers/staging/comedi/drivers/ni_mio_cs.c @@ -48,7 +48,6 @@ See the notes in the ni_atmio.o driver. #include "ni_stc.h" #include "8255.h" -#include <pcmcia/cs.h> #include <pcmcia/cistpl.h> #include <pcmcia/ds.h> @@ -263,11 +262,6 @@ static struct pcmcia_device *cur_dev = NULL; static int cs_attach(struct pcmcia_device *link) { - link->resource[0]->flags |= IO_DATA_PATH_WIDTH_16; - link->resource[0]->end = 16; - link->conf.Attributes = CONF_ENABLE_IRQ; - link->conf.IntType = INT_MEMORY_AND_IO; - cur_dev = link; mio_cs_config(link); @@ -301,16 +295,12 @@ static int mio_cs_resume(struct pcmcia_device *link) } -static int mio_pcmcia_config_loop(struct pcmcia_device *p_dev, - cistpl_cftable_entry_t *cfg, - cistpl_cftable_entry_t *dflt, - unsigned int vcc, - void *priv_data) +static int mio_pcmcia_config_loop(struct pcmcia_device *p_dev, void *priv_data) { int base, ret; - p_dev->resource[0]->end = cfg->io.win[0].len; - p_dev->io_lines = cfg->io.flags & CISTPL_IO_LINES_MASK; + p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH; + p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_16; for (base = 0x000; base < 0x400; base += 0x20) { p_dev->resource[0]->start = base; @@ -327,6 +317,7 @@ static void mio_cs_config(struct pcmcia_device *link) int ret; DPRINTK("mio_cs_config(link=%p)\n", link); + link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_IO; ret = pcmcia_loop_config(link, mio_pcmcia_config_loop, NULL); if (ret) { @@ -337,7 +328,7 @@ static void mio_cs_config(struct pcmcia_device *link) if (!link->irq) dev_info(&link->dev, "no IRQ available\n"); - ret = pcmcia_request_configuration(link, &link->conf); + ret = pcmcia_enable_device(link); } static int mio_cs_attach(struct comedi_device *dev, struct comedi_devconfig *it) @@ -446,9 +437,7 @@ struct pcmcia_driver ni_mio_cs_driver = { .resume = &mio_cs_resume, .id_table = ni_mio_cs_ids, .owner = THIS_MODULE, - .drv = { - .name = "ni_mio_cs", - }, + .name = "ni_mio_cs", }; int init_module(void) diff --git a/drivers/staging/comedi/drivers/quatech_daqp_cs.c b/drivers/staging/comedi/drivers/quatech_daqp_cs.c index bf489d7f4990..ebba9bb47777 100644 --- a/drivers/staging/comedi/drivers/quatech_daqp_cs.c +++ b/drivers/staging/comedi/drivers/quatech_daqp_cs.c @@ -50,7 +50,6 @@ Devices: [Quatech] DAQP-208 (daqp), DAQP-308 #include "../comedidev.h" #include <linux/semaphore.h> -#include <pcmcia/cs.h> #include <pcmcia/cistpl.h> #include <pcmcia/cisreg.h> #include <pcmcia/ds.h> @@ -969,43 +968,14 @@ static int daqp_detach(struct comedi_device *dev) ======================================================================*/ -/* - The event() function is this driver's Card Services event handler. - It will be called by Card Services when an appropriate card status - event is received. The config() and release() entry points are - used to configure or release a socket, in response to card - insertion and ejection events. - - Kernel version 2.6.16 upwards uses suspend() and resume() functions - instead of an event() function. -*/ - static void daqp_cs_config(struct pcmcia_device *link); static void daqp_cs_release(struct pcmcia_device *link); static int daqp_cs_suspend(struct pcmcia_device *p_dev); static int daqp_cs_resume(struct pcmcia_device *p_dev); -/* - The attach() and detach() entry points are used to create and destroy - "instances" of the driver, where each instance represents everything - needed to manage one actual PCMCIA card. -*/ - static int daqp_cs_attach(struct pcmcia_device *); static void daqp_cs_detach(struct pcmcia_device *); -/*====================================================================== - - daqp_cs_attach() creates an "instance" of the driver, allocating - local data structures for one device. The device is registered - with Card Services. - - The dev_link structure is initialized, but we don't actually - configure the card at this point -- we wait until we receive a - card insertion event. - -======================================================================*/ - static int daqp_cs_attach(struct pcmcia_device *link) { struct local_info_t *local; @@ -1031,30 +1001,11 @@ static int daqp_cs_attach(struct pcmcia_device *link) local->link = link; link->priv = local; - /* - General socket configuration defaults can go here. In this - client, we assume very little, and rely on the CIS for almost - everything. In most clients, many details (i.e., number, sizes, - and attributes of IO windows) are fixed by the nature of the - device, and can be hard-wired here. - */ - link->conf.Attributes = 0; - link->conf.IntType = INT_MEMORY_AND_IO; - daqp_cs_config(link); return 0; } /* daqp_cs_attach */ -/*====================================================================== - - This deletes a driver "instance". The device is de-registered - with Card Services. If it has been released, all local data - structures are freed. Otherwise, the structures will be freed - when the device is released. - -======================================================================*/ - static void daqp_cs_detach(struct pcmcia_device *link) { struct local_info_t *dev = link->priv; @@ -1070,45 +1021,11 @@ static void daqp_cs_detach(struct pcmcia_device *link) } /* daqp_cs_detach */ -/*====================================================================== - - daqp_cs_config() is scheduled to run after a CARD_INSERTION event - is received, to configure the PCMCIA socket, and to make the - device available to the system. - -======================================================================*/ - - -static int daqp_pcmcia_config_loop(struct pcmcia_device *p_dev, - cistpl_cftable_entry_t *cfg, - cistpl_cftable_entry_t *dflt, - unsigned int vcc, - void *priv_data) +static int daqp_pcmcia_config_loop(struct pcmcia_device *p_dev, void *priv_data) { - if (cfg->index == 0) - return -ENODEV; + if (p_dev->config_index == 0) + return -EINVAL; - /* Do we need to allocate an interrupt? */ - p_dev->conf.Attributes |= CONF_ENABLE_IRQ; - - /* IO window settings */ - p_dev->resource[0]->end = p_dev->resource[1]->end = 0; - if ((cfg->io.nwin > 0) || (dflt->io.nwin > 0)) { - cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &dflt->io; - p_dev->io_lines = io->flags & CISTPL_IO_LINES_MASK; - p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH; - p_dev->resource[0]->flags |= - pcmcia_io_cfg_data_width(io->flags); - p_dev->resource[0]->start = io->win[0].base; - p_dev->resource[0]->end = io->win[0].len; - if (io->nwin > 1) { - p_dev->resource[1]->flags = p_dev->resource[0]->flags; - p_dev->resource[1]->start = io->win[1].base; - p_dev->resource[1]->end = io->win[1].len; - } - } - - /* This reserves IO space but doesn't actually enable it */ return pcmcia_request_io(p_dev); } @@ -1118,6 +1035,8 @@ static void daqp_cs_config(struct pcmcia_device *link) dev_dbg(&link->dev, "daqp_cs_config\n"); + link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_IO; + ret = pcmcia_loop_config(link, daqp_pcmcia_config_loop, NULL); if (ret) { dev_warn(&link->dev, "no configuration found\n"); @@ -1128,25 +1047,10 @@ static void daqp_cs_config(struct pcmcia_device *link) if (ret) goto failed; - /* - This actually configures the PCMCIA socket -- setting up - the I/O windows and the interrupt mapping, and putting the - card and host interface into "Memory and IO" mode. - */ - ret = pcmcia_request_configuration(link, &link->conf); + ret = pcmcia_enable_device(link); if (ret) goto failed; - /* Finally, report what we've done */ - dev_info(&link->dev, "index 0x%02x", link->conf.ConfigIndex); - if (link->conf.Attributes & CONF_ENABLE_IRQ) - printk(", irq %u", link->irq); - if (link->resource[0]) - printk(" & %pR", link->resource[0]); - if (link->resource[1]) - printk(" & %pR", link->resource[1]); - printk("\n"); - return; failed: @@ -1161,18 +1065,6 @@ static void daqp_cs_release(struct pcmcia_device *link) pcmcia_disable_device(link); } /* daqp_cs_release */ -/*====================================================================== - - The card status event handler. Mostly, this schedules other - stuff to run after an event is received. - - When a CARD_REMOVAL event is received, we immediately set a - private flag to block future accesses to this device. All the - functions that actually access the device should check this flag - to make sure the card is still present. - -======================================================================*/ - static int daqp_cs_suspend(struct pcmcia_device *link) { struct local_info_t *local = link->priv; @@ -1212,9 +1104,7 @@ static struct pcmcia_driver daqp_cs_driver = { .resume = daqp_cs_resume, .id_table = daqp_cs_id_table, .owner = THIS_MODULE, - .drv = { - .name = "quatech_daqp_cs", - }, + .name = "quatech_daqp_cs", }; int __init init_module(void) diff --git a/drivers/staging/wlags49_h2/wl_cs.c b/drivers/staging/wlags49_h2/wl_cs.c index 19c335458653..6555891e149c 100644 --- a/drivers/staging/wlags49_h2/wl_cs.c +++ b/drivers/staging/wlags49_h2/wl_cs.c @@ -83,7 +83,6 @@ #include <linux/if_arp.h> #include <linux/ioport.h> -#include <pcmcia/cs.h> #include <pcmcia/cistpl.h> #include <pcmcia/cisreg.h> #include <pcmcia/ciscode.h> @@ -147,10 +146,9 @@ static int wl_adapter_attach(struct pcmcia_device *link) link->resource[0]->end = HCF_NUM_IO_PORTS; link->resource[0]->flags= IO_DATA_PATH_WIDTH_16; - link->conf.Attributes = CONF_ENABLE_IRQ; - link->conf.IntType = INT_MEMORY_AND_IO; - link->conf.ConfigIndex = 5; - link->conf.Present = PRESENT_OPTION; + link->config_flags |= CONF_ENABLE_IRQ; + link->config_index = 5; + link->config_regs = PRESENT_OPTION; link->priv = dev; lp = wl_priv(dev); @@ -165,27 +163,6 @@ static int wl_adapter_attach(struct pcmcia_device *link) -/******************************************************************************* - * wl_adapter_detach() - ******************************************************************************* - * - * DESCRIPTION: - * - * This deletes a driver "instance". The device is de-registered with Card - * Services. If it has been released, then the net device is unregistered, and - * all local data structures are freed. Otherwise, the structures will be - * freed when the device is released. - * - * PARAMETERS: - * - * link - pointer to the dev_link_t structure representing the device to - * detach - * - * RETURNS: - * - * N/A - * - ******************************************************************************/ static void wl_adapter_detach(struct pcmcia_device *link) { struct net_device *dev = link->priv; @@ -209,26 +186,6 @@ static void wl_adapter_detach(struct pcmcia_device *link) /*============================================================================*/ -/******************************************************************************* - * wl_adapter_release() - ******************************************************************************* - * - * DESCRIPTION: - * - * After a card is removed, this routine will release the PCMCIA - * configuration. If the device is still open, this will be postponed until it - * is closed. - * - * PARAMETERS: - * - * arg - a u_long representing a pointer to a dev_link_t structure for the - * device to be released. - * - * RETURNS: - * - * N/A - * - ******************************************************************************/ void wl_adapter_release(struct pcmcia_device *link) { DBG_FUNC("wl_adapter_release"); @@ -268,26 +225,6 @@ static int wl_adapter_resume(struct pcmcia_device *link) return 0; } /* wl_adapter_resume */ -/******************************************************************************* - * wl_adapter_insert() - ******************************************************************************* - * - * DESCRIPTION: - * - * wl_adapter_insert() is scheduled to run after a CARD_INSERTION event is - * received, to configure the PCMCIA socket, and to make the ethernet device - * available to the system. - * - * PARAMETERS: - * - * link - pointer to the dev_link_t structure representing the device to - * insert - * - * RETURNS: - * - * N/A - * - ******************************************************************************/ void wl_adapter_insert(struct pcmcia_device *link) { struct net_device *dev; @@ -302,7 +239,7 @@ void wl_adapter_insert(struct pcmcia_device *link) dev = link->priv; /* Do we need to allocate an interrupt? */ - link->conf.Attributes |= CONF_ENABLE_IRQ; + link->config_flags |= CONF_ENABLE_IRQ; link->io_lines = 6; ret = pcmcia_request_io(link); @@ -313,7 +250,7 @@ void wl_adapter_insert(struct pcmcia_device *link) if (ret != 0) goto failed; - ret = pcmcia_request_configuration(link, &link->conf); + ret = pcmcia_enable_device(link); if (ret != 0) goto failed; @@ -457,9 +394,7 @@ MODULE_DEVICE_TABLE(pcmcia, wl_adapter_ids); static struct pcmcia_driver wlags49_driver = { .owner = THIS_MODULE, - .drv = { - .name = DRIVER_NAME, - }, + .name = DRIVER_NAME, .probe = wl_adapter_attach, .remove = wl_adapter_detach, .id_table = wl_adapter_ids, diff --git a/drivers/staging/wlags49_h2/wl_internal.h b/drivers/staging/wlags49_h2/wl_internal.h index 02f0a20e178a..cd129b3ee6c0 100644 --- a/drivers/staging/wlags49_h2/wl_internal.h +++ b/drivers/staging/wlags49_h2/wl_internal.h @@ -69,7 +69,6 @@ ******************************************************************************/ #include <linux/version.h> #ifdef BUS_PCMCIA -#include <pcmcia/cs.h> #include <pcmcia/cistpl.h> #include <pcmcia/cisreg.h> #include <pcmcia/ciscode.h> diff --git a/drivers/staging/wlags49_h2/wl_main.c b/drivers/staging/wlags49_h2/wl_main.c index 88d0d472142f..8e3536acbf46 100644 --- a/drivers/staging/wlags49_h2/wl_main.c +++ b/drivers/staging/wlags49_h2/wl_main.c @@ -414,25 +414,6 @@ extern memimage fw_image; // firmware image to be downloaded #endif /* HCF_STA */ -/******************************************************************************* - * wl_insert() - ******************************************************************************* - * - * DESCRIPTION: - * - * wl_insert() is scheduled to run after a CARD_INSERTION event is - * received, to configure the PCMCIA socket, and to make the ethernet device - * available to the system. - * - * PARAMETERS: - * - * dev - a pointer to the net_device struct of the wireless device - * - * RETURNS: - * - * TRUE or FALSE - * - ******************************************************************************/ int wl_insert( struct net_device *dev ) { int result = 0; diff --git a/drivers/telephony/ixj_pcmcia.c b/drivers/telephony/ixj_pcmcia.c index a1900e502518..d005b9eeebbc 100644 --- a/drivers/telephony/ixj_pcmcia.c +++ b/drivers/telephony/ixj_pcmcia.c @@ -8,7 +8,6 @@ #include <linux/errno.h> /* error codes */ #include <linux/slab.h> -#include <pcmcia/cs.h> #include <pcmcia/cistpl.h> #include <pcmcia/ds.h> @@ -32,9 +31,6 @@ static int ixj_probe(struct pcmcia_device *p_dev) { dev_dbg(&p_dev->dev, "ixj_attach()\n"); /* Create new ixj device */ - p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_8; - p_dev->resource[1]->flags |= IO_DATA_PATH_WIDTH_8; - p_dev->conf.IntType = INT_MEMORY_AND_IO; p_dev->priv = kzalloc(sizeof(struct ixj_info_t), GFP_KERNEL); if (!p_dev->priv) { return -ENOMEM; @@ -111,40 +107,31 @@ failed: return; } -static int ixj_config_check(struct pcmcia_device *p_dev, - cistpl_cftable_entry_t *cfg, - cistpl_cftable_entry_t *dflt, - unsigned int vcc, - void *priv_data) +static int ixj_config_check(struct pcmcia_device *p_dev, void *priv_data) { - if ((cfg->io.nwin > 0) || (dflt->io.nwin > 0)) { - cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &dflt->io; - p_dev->resource[0]->start = io->win[0].base; - p_dev->resource[0]->end = io->win[0].len; - p_dev->io_lines = 3; - if (io->nwin == 2) { - p_dev->resource[1]->start = io->win[1].base; - p_dev->resource[1]->end = io->win[1].len; - } - if (!pcmcia_request_io(p_dev)) - return 0; - } - return -ENODEV; + p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH; + p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_8; + p_dev->resource[1]->flags &= ~IO_DATA_PATH_WIDTH; + p_dev->resource[1]->flags |= IO_DATA_PATH_WIDTH_8; + p_dev->io_lines = 3; + + return pcmcia_request_io(p_dev); } static int ixj_config(struct pcmcia_device * link) { IXJ *j; ixj_info_t *info; - cistpl_cftable_entry_t dflt = { 0 }; info = link->priv; dev_dbg(&link->dev, "ixj_config\n"); - if (pcmcia_loop_config(link, ixj_config_check, &dflt)) + link->config_flags = CONF_AUTO_SET_IO; + + if (pcmcia_loop_config(link, ixj_config_check, NULL)) goto failed; - if (pcmcia_request_configuration(link, &link->conf)) + if (pcmcia_enable_device(link)) goto failed; /* @@ -178,9 +165,7 @@ MODULE_DEVICE_TABLE(pcmcia, ixj_ids); static struct pcmcia_driver ixj_driver = { .owner = THIS_MODULE, - .drv = { - .name = "ixj_cs", - }, + .name = "ixj_cs", .probe = ixj_probe, .remove = ixj_detach, .id_table = ixj_ids, diff --git a/drivers/usb/host/sl811_cs.c b/drivers/usb/host/sl811_cs.c index 0e13a00eb2ed..3775c035a6c5 100644 --- a/drivers/usb/host/sl811_cs.c +++ b/drivers/usb/host/sl811_cs.c @@ -20,7 +20,6 @@ #include <linux/ioport.h> #include <linux/platform_device.h> -#include <pcmcia/cs.h> #include <pcmcia/cistpl.h> #include <pcmcia/cisreg.h> #include <pcmcia/ds.h> @@ -132,49 +131,12 @@ static void sl811_cs_release(struct pcmcia_device * link) platform_device_unregister(&platform_dev); } -static int sl811_cs_config_check(struct pcmcia_device *p_dev, - cistpl_cftable_entry_t *cfg, - cistpl_cftable_entry_t *dflt, - unsigned int vcc, - void *priv_data) +static int sl811_cs_config_check(struct pcmcia_device *p_dev, void *priv_data) { - if (cfg->index == 0) - return -ENODEV; - - /* Use power settings for Vcc and Vpp if present */ - /* Note that the CIS values need to be rescaled */ - if (cfg->vcc.present & (1<<CISTPL_POWER_VNOM)) { - if (cfg->vcc.param[CISTPL_POWER_VNOM]/10000 != vcc) - return -ENODEV; - } else if (dflt->vcc.present & (1<<CISTPL_POWER_VNOM)) { - if (dflt->vcc.param[CISTPL_POWER_VNOM]/10000 != vcc) - return -ENODEV; - } - - if (cfg->vpp1.present & (1<<CISTPL_POWER_VNOM)) - p_dev->conf.Vpp = - cfg->vpp1.param[CISTPL_POWER_VNOM]/10000; - else if (dflt->vpp1.present & (1<<CISTPL_POWER_VNOM)) - p_dev->conf.Vpp = - dflt->vpp1.param[CISTPL_POWER_VNOM]/10000; - - /* we need an interrupt */ - p_dev->conf.Attributes |= CONF_ENABLE_IRQ; - - /* IO window settings */ - p_dev->resource[0]->end = p_dev->resource[1]->end = 0; - if ((cfg->io.nwin > 0) || (dflt->io.nwin > 0)) { - cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &dflt->io; - p_dev->io_lines = io->flags & CISTPL_IO_LINES_MASK; - - p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_8; - p_dev->resource[0]->start = io->win[0].base; - p_dev->resource[0]->end = io->win[0].len; - - return pcmcia_request_io(p_dev); - } - pcmcia_disable_device(p_dev); - return -ENODEV; + if (p_dev->config_index == 0) + return -EINVAL; + + return pcmcia_request_io(p_dev); } @@ -185,6 +147,9 @@ static int sl811_cs_config(struct pcmcia_device *link) dev_dbg(&link->dev, "sl811_cs_config\n"); + link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_VPP | + CONF_AUTO_CHECK_VCC | CONF_AUTO_SET_IO; + if (pcmcia_loop_config(link, sl811_cs_config_check, NULL)) goto failed; @@ -195,18 +160,10 @@ static int sl811_cs_config(struct pcmcia_device *link) if (!link->irq) goto failed; - ret = pcmcia_request_configuration(link, &link->conf); + ret = pcmcia_enable_device(link); if (ret) goto failed; - dev_info(&link->dev, "index 0x%02x: ", - link->conf.ConfigIndex); - if (link->conf.Vpp) - printk(", Vpp %d.%d", link->conf.Vpp/10, link->conf.Vpp%10); - printk(", irq %d", link->irq); - printk(", io %pR", link->resource[0]); - printk("\n"); - if (sl811_hc_init(parent, link->resource[0]->start, link->irq) < 0) { failed: @@ -227,9 +184,6 @@ static int sl811_cs_probe(struct pcmcia_device *link) local->p_dev = link; link->priv = local; - link->conf.Attributes = 0; - link->conf.IntType = INT_MEMORY_AND_IO; - return sl811_cs_config(link); } @@ -241,9 +195,7 @@ MODULE_DEVICE_TABLE(pcmcia, sl811_ids); static struct pcmcia_driver sl811_cs_driver = { .owner = THIS_MODULE, - .drv = { - .name = "sl811_cs", - }, + .name = "sl811_cs", .probe = sl811_cs_probe, .remove = sl811_cs_detach, .id_table = sl811_ids, diff --git a/drivers/vhost/net.c b/drivers/vhost/net.c index 7c8008225ee3..17927b1f9334 100644 --- a/drivers/vhost/net.c +++ b/drivers/vhost/net.c @@ -127,7 +127,10 @@ static void handle_tx(struct vhost_net *net) size_t len, total_len = 0; int err, wmem; size_t hdr_size; - struct socket *sock = rcu_dereference(vq->private_data); + struct socket *sock; + + sock = rcu_dereference_check(vq->private_data, + lockdep_is_held(&vq->mutex)); if (!sock) return; @@ -582,7 +585,10 @@ static void vhost_net_disable_vq(struct vhost_net *n, static void vhost_net_enable_vq(struct vhost_net *n, struct vhost_virtqueue *vq) { - struct socket *sock = vq->private_data; + struct socket *sock; + + sock = rcu_dereference_protected(vq->private_data, + lockdep_is_held(&vq->mutex)); if (!sock) return; if (vq == n->vqs + VHOST_NET_VQ_TX) { @@ -598,7 +604,8 @@ static struct socket *vhost_net_stop_vq(struct vhost_net *n, struct socket *sock; mutex_lock(&vq->mutex); - sock = vq->private_data; + sock = rcu_dereference_protected(vq->private_data, + lockdep_is_held(&vq->mutex)); vhost_net_disable_vq(n, vq); rcu_assign_pointer(vq->private_data, NULL); mutex_unlock(&vq->mutex); @@ -736,7 +743,8 @@ static long vhost_net_set_backend(struct vhost_net *n, unsigned index, int fd) } /* start polling new socket */ - oldsock = vq->private_data; + oldsock = rcu_dereference_protected(vq->private_data, + lockdep_is_held(&vq->mutex)); if (sock != oldsock) { vhost_net_disable_vq(n, vq); rcu_assign_pointer(vq->private_data, sock); diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c index dd3d6f7406f8..8b5a1b33d0fe 100644 --- a/drivers/vhost/vhost.c +++ b/drivers/vhost/vhost.c @@ -320,7 +320,7 @@ long vhost_dev_reset_owner(struct vhost_dev *dev) vhost_dev_cleanup(dev); memory->nregions = 0; - dev->memory = memory; + RCU_INIT_POINTER(dev->memory, memory); return 0; } @@ -352,8 +352,9 @@ void vhost_dev_cleanup(struct vhost_dev *dev) fput(dev->log_file); dev->log_file = NULL; /* No one will access memory at this point */ - kfree(dev->memory); - dev->memory = NULL; + kfree(rcu_dereference_protected(dev->memory, + lockdep_is_held(&dev->mutex))); + RCU_INIT_POINTER(dev->memory, NULL); if (dev->mm) mmput(dev->mm); dev->mm = NULL; @@ -440,14 +441,22 @@ static int vq_access_ok(unsigned int num, /* Caller should have device mutex but not vq mutex */ int vhost_log_access_ok(struct vhost_dev *dev) { - return memory_access_ok(dev, dev->memory, 1); + struct vhost_memory *mp; + + mp = rcu_dereference_protected(dev->memory, + lockdep_is_held(&dev->mutex)); + return memory_access_ok(dev, mp, 1); } /* Verify access for write logging. */ /* Caller should have vq mutex and device mutex */ static int vq_log_access_ok(struct vhost_virtqueue *vq, void __user *log_base) { - return vq_memory_access_ok(log_base, vq->dev->memory, + struct vhost_memory *mp; + + mp = rcu_dereference_protected(vq->dev->memory, + lockdep_is_held(&vq->mutex)); + return vq_memory_access_ok(log_base, mp, vhost_has_feature(vq->dev, VHOST_F_LOG_ALL)) && (!vq->log_used || log_access_ok(log_base, vq->log_addr, sizeof *vq->used + @@ -487,7 +496,8 @@ static long vhost_set_memory(struct vhost_dev *d, struct vhost_memory __user *m) kfree(newmem); return -EFAULT; } - oldmem = d->memory; + oldmem = rcu_dereference_protected(d->memory, + lockdep_is_held(&d->mutex)); rcu_assign_pointer(d->memory, newmem); synchronize_rcu(); kfree(oldmem); diff --git a/drivers/vhost/vhost.h b/drivers/vhost/vhost.h index afd77295971c..af3c11ded5fd 100644 --- a/drivers/vhost/vhost.h +++ b/drivers/vhost/vhost.h @@ -106,7 +106,7 @@ struct vhost_virtqueue { * vhost_work execution acts instead of rcu_read_lock() and the end of * vhost_work execution acts instead of rcu_read_lock(). * Writers use virtqueue mutex. */ - void *private_data; + void __rcu *private_data; /* Log write descriptors */ void __user *log_base; struct vhost_log log[VHOST_NET_MAX_SG]; @@ -116,7 +116,7 @@ struct vhost_dev { /* Readers use RCU to access memory table pointer * log base pointer and features. * Writers use mutex below.*/ - struct vhost_memory *memory; + struct vhost_memory __rcu *memory; struct mm_struct *mm; struct mutex mutex; unsigned acked_features; @@ -173,7 +173,11 @@ enum { static inline int vhost_has_feature(struct vhost_dev *dev, int bit) { - unsigned acked_features = rcu_dereference(dev->acked_features); + unsigned acked_features; + + acked_features = + rcu_dereference_index_check(dev->acked_features, + lockdep_is_held(&dev->mutex)); return acked_features & (1 << bit); } diff --git a/drivers/vlynq/vlynq.c b/drivers/vlynq/vlynq.c index f2d9e667972d..f885c868a04d 100644 --- a/drivers/vlynq/vlynq.c +++ b/drivers/vlynq/vlynq.c @@ -31,6 +31,7 @@ #include <linux/delay.h> #include <linux/io.h> #include <linux/slab.h> +#include <linux/irq.h> #include <linux/vlynq.h> diff --git a/drivers/watchdog/octeon-wdt-main.c b/drivers/watchdog/octeon-wdt-main.c index 2a410170eca6..909923800a02 100644 --- a/drivers/watchdog/octeon-wdt-main.c +++ b/drivers/watchdog/octeon-wdt-main.c @@ -64,6 +64,7 @@ #include <linux/cpu.h> #include <linux/smp.h> #include <linux/fs.h> +#include <linux/irq.h> #include <asm/mipsregs.h> #include <asm/uasm.h> diff --git a/drivers/xen/events.c b/drivers/xen/events.c index 13365ba35218..7d24b0d94ed4 100644 --- a/drivers/xen/events.c +++ b/drivers/xen/events.c @@ -338,30 +338,29 @@ static void unmask_evtchn(int port) static int find_unbound_irq(void) { - int irq; - struct irq_desc *desc; + struct irq_data *data; + int irq, res; for (irq = 0; irq < nr_irqs; irq++) { - desc = irq_to_desc(irq); + data = irq_get_irq_data(irq); /* only 0->15 have init'd desc; handle irq > 16 */ - if (desc == NULL) + if (!data) break; - if (desc->chip == &no_irq_chip) + if (data->chip == &no_irq_chip) break; - if (desc->chip != &xen_dynamic_chip) + if (data->chip != &xen_dynamic_chip) continue; if (irq_info[irq].type == IRQT_UNBOUND) - break; + return irq; } if (irq == nr_irqs) panic("No available IRQ to bind to: increase nr_irqs!\n"); - desc = irq_to_desc_alloc_node(irq, 0); - if (WARN_ON(desc == NULL)) - return -1; + res = irq_alloc_desc_at(irq, 0); - dynamic_irq_init_keep_chip_data(irq); + if (WARN_ON(res != irq)) + return -1; return irq; } @@ -495,7 +494,7 @@ static void unbind_from_irq(unsigned int irq) if (irq_info[irq].type != IRQT_UNBOUND) { irq_info[irq] = mk_unbound_info(); - dynamic_irq_cleanup(irq); + irq_free_desc(irq); } spin_unlock(&irq_mapping_update_lock); diff --git a/fs/affs/super.c b/fs/affs/super.c index 33c4e7eef470..9581ea94d5a1 100644 --- a/fs/affs/super.c +++ b/fs/affs/super.c @@ -109,8 +109,8 @@ static void init_once(void *foo) { struct affs_inode_info *ei = (struct affs_inode_info *) foo; - init_MUTEX(&ei->i_link_lock); - init_MUTEX(&ei->i_ext_lock); + sema_init(&ei->i_link_lock, 1); + sema_init(&ei->i_ext_lock, 1); inode_init_once(&ei->vfs_inode); } diff --git a/fs/ceph/Kconfig b/fs/ceph/Kconfig index 0fcd2640c23f..9eb134ea6eb2 100644 --- a/fs/ceph/Kconfig +++ b/fs/ceph/Kconfig @@ -1,9 +1,11 @@ config CEPH_FS tristate "Ceph distributed file system (EXPERIMENTAL)" depends on INET && EXPERIMENTAL + select CEPH_LIB select LIBCRC32C select CRYPTO_AES select CRYPTO + default n help Choose Y or M here to include support for mounting the experimental Ceph distributed file system. Ceph is an extremely @@ -14,15 +16,3 @@ config CEPH_FS If unsure, say N. -config CEPH_FS_PRETTYDEBUG - bool "Include file:line in ceph debug output" - depends on CEPH_FS - default n - help - If you say Y here, debug output will include a filename and - line to aid debugging. This icnreases kernel size and slows - execution slightly when debug call sites are enabled (e.g., - via CONFIG_DYNAMIC_DEBUG). - - If unsure, say N. - diff --git a/fs/ceph/Makefile b/fs/ceph/Makefile index 278e1172600d..9e6c4f2e8ff1 100644 --- a/fs/ceph/Makefile +++ b/fs/ceph/Makefile @@ -8,15 +8,8 @@ obj-$(CONFIG_CEPH_FS) += ceph.o ceph-objs := super.o inode.o dir.o file.o locks.o addr.o ioctl.o \ export.o caps.o snap.o xattr.o \ - messenger.o msgpool.o buffer.o pagelist.o \ - mds_client.o mdsmap.o \ - mon_client.o \ - osd_client.o osdmap.o crush/crush.o crush/mapper.o crush/hash.o \ - debugfs.o \ - auth.o auth_none.o \ - crypto.o armor.o \ - auth_x.o \ - ceph_fs.o ceph_strings.o ceph_hash.o ceph_frag.o + mds_client.o mdsmap.o strings.o ceph_frag.o \ + debugfs.o else #Otherwise we were called directly from the command diff --git a/fs/ceph/README b/fs/ceph/README deleted file mode 100644 index 18352fab37c0..000000000000 --- a/fs/ceph/README +++ /dev/null @@ -1,20 +0,0 @@ -# -# The following files are shared by (and manually synchronized -# between) the Ceph userland and kernel client. -# -# userland kernel -src/include/ceph_fs.h fs/ceph/ceph_fs.h -src/include/ceph_fs.cc fs/ceph/ceph_fs.c -src/include/msgr.h fs/ceph/msgr.h -src/include/rados.h fs/ceph/rados.h -src/include/ceph_strings.cc fs/ceph/ceph_strings.c -src/include/ceph_frag.h fs/ceph/ceph_frag.h -src/include/ceph_frag.cc fs/ceph/ceph_frag.c -src/include/ceph_hash.h fs/ceph/ceph_hash.h -src/include/ceph_hash.cc fs/ceph/ceph_hash.c -src/crush/crush.c fs/ceph/crush/crush.c -src/crush/crush.h fs/ceph/crush/crush.h -src/crush/mapper.c fs/ceph/crush/mapper.c -src/crush/mapper.h fs/ceph/crush/mapper.h -src/crush/hash.h fs/ceph/crush/hash.h -src/crush/hash.c fs/ceph/crush/hash.c diff --git a/fs/ceph/addr.c b/fs/ceph/addr.c index efbc604001c8..51bcc5ce3230 100644 --- a/fs/ceph/addr.c +++ b/fs/ceph/addr.c @@ -1,4 +1,4 @@ -#include "ceph_debug.h" +#include <linux/ceph/ceph_debug.h> #include <linux/backing-dev.h> #include <linux/fs.h> @@ -10,7 +10,8 @@ #include <linux/task_io_accounting_ops.h> #include "super.h" -#include "osd_client.h" +#include "mds_client.h" +#include <linux/ceph/osd_client.h> /* * Ceph address space ops. @@ -193,7 +194,8 @@ static int readpage_nounlock(struct file *filp, struct page *page) { struct inode *inode = filp->f_dentry->d_inode; struct ceph_inode_info *ci = ceph_inode(inode); - struct ceph_osd_client *osdc = &ceph_inode_to_client(inode)->osdc; + struct ceph_osd_client *osdc = + &ceph_inode_to_client(inode)->client->osdc; int err = 0; u64 len = PAGE_CACHE_SIZE; @@ -265,7 +267,8 @@ static int ceph_readpages(struct file *file, struct address_space *mapping, { struct inode *inode = file->f_dentry->d_inode; struct ceph_inode_info *ci = ceph_inode(inode); - struct ceph_osd_client *osdc = &ceph_inode_to_client(inode)->osdc; + struct ceph_osd_client *osdc = + &ceph_inode_to_client(inode)->client->osdc; int rc = 0; struct page **pages; loff_t offset; @@ -365,7 +368,7 @@ static int writepage_nounlock(struct page *page, struct writeback_control *wbc) { struct inode *inode; struct ceph_inode_info *ci; - struct ceph_client *client; + struct ceph_fs_client *fsc; struct ceph_osd_client *osdc; loff_t page_off = page->index << PAGE_CACHE_SHIFT; int len = PAGE_CACHE_SIZE; @@ -383,8 +386,8 @@ static int writepage_nounlock(struct page *page, struct writeback_control *wbc) } inode = page->mapping->host; ci = ceph_inode(inode); - client = ceph_inode_to_client(inode); - osdc = &client->osdc; + fsc = ceph_inode_to_client(inode); + osdc = &fsc->client->osdc; /* verify this is a writeable snap context */ snapc = (void *)page->private; @@ -414,10 +417,10 @@ static int writepage_nounlock(struct page *page, struct writeback_control *wbc) dout("writepage %p page %p index %lu on %llu~%u snapc %p\n", inode, page, page->index, page_off, len, snapc); - writeback_stat = atomic_long_inc_return(&client->writeback_count); + writeback_stat = atomic_long_inc_return(&fsc->writeback_count); if (writeback_stat > - CONGESTION_ON_THRESH(client->mount_args->congestion_kb)) - set_bdi_congested(&client->backing_dev_info, BLK_RW_ASYNC); + CONGESTION_ON_THRESH(fsc->mount_options->congestion_kb)) + set_bdi_congested(&fsc->backing_dev_info, BLK_RW_ASYNC); set_page_writeback(page); err = ceph_osdc_writepages(osdc, ceph_vino(inode), @@ -496,7 +499,7 @@ static void writepages_finish(struct ceph_osd_request *req, struct address_space *mapping = inode->i_mapping; __s32 rc = -EIO; u64 bytes = 0; - struct ceph_client *client = ceph_inode_to_client(inode); + struct ceph_fs_client *fsc = ceph_inode_to_client(inode); long writeback_stat; unsigned issued = ceph_caps_issued(ci); @@ -529,10 +532,10 @@ static void writepages_finish(struct ceph_osd_request *req, WARN_ON(!PageUptodate(page)); writeback_stat = - atomic_long_dec_return(&client->writeback_count); + atomic_long_dec_return(&fsc->writeback_count); if (writeback_stat < - CONGESTION_OFF_THRESH(client->mount_args->congestion_kb)) - clear_bdi_congested(&client->backing_dev_info, + CONGESTION_OFF_THRESH(fsc->mount_options->congestion_kb)) + clear_bdi_congested(&fsc->backing_dev_info, BLK_RW_ASYNC); ceph_put_snap_context((void *)page->private); @@ -569,13 +572,13 @@ static void writepages_finish(struct ceph_osd_request *req, * mempool. we avoid the mempool if we can because req->r_num_pages * may be less than the maximum write size. */ -static void alloc_page_vec(struct ceph_client *client, +static void alloc_page_vec(struct ceph_fs_client *fsc, struct ceph_osd_request *req) { req->r_pages = kmalloc(sizeof(struct page *) * req->r_num_pages, GFP_NOFS); if (!req->r_pages) { - req->r_pages = mempool_alloc(client->wb_pagevec_pool, GFP_NOFS); + req->r_pages = mempool_alloc(fsc->wb_pagevec_pool, GFP_NOFS); req->r_pages_from_pool = 1; WARN_ON(!req->r_pages); } @@ -590,7 +593,7 @@ static int ceph_writepages_start(struct address_space *mapping, struct inode *inode = mapping->host; struct backing_dev_info *bdi = mapping->backing_dev_info; struct ceph_inode_info *ci = ceph_inode(inode); - struct ceph_client *client; + struct ceph_fs_client *fsc; pgoff_t index, start, end; int range_whole = 0; int should_loop = 1; @@ -617,13 +620,13 @@ static int ceph_writepages_start(struct address_space *mapping, wbc->sync_mode == WB_SYNC_NONE ? "NONE" : (wbc->sync_mode == WB_SYNC_ALL ? "ALL" : "HOLD")); - client = ceph_inode_to_client(inode); - if (client->mount_state == CEPH_MOUNT_SHUTDOWN) { + fsc = ceph_inode_to_client(inode); + if (fsc->mount_state == CEPH_MOUNT_SHUTDOWN) { pr_warning("writepage_start %p on forced umount\n", inode); return -EIO; /* we're in a forced umount, don't write! */ } - if (client->mount_args->wsize && client->mount_args->wsize < wsize) - wsize = client->mount_args->wsize; + if (fsc->mount_options->wsize && fsc->mount_options->wsize < wsize) + wsize = fsc->mount_options->wsize; if (wsize < PAGE_CACHE_SIZE) wsize = PAGE_CACHE_SIZE; max_pages_ever = wsize >> PAGE_CACHE_SHIFT; @@ -769,7 +772,7 @@ get_more_pages: offset = (unsigned long long)page->index << PAGE_CACHE_SHIFT; len = wsize; - req = ceph_osdc_new_request(&client->osdc, + req = ceph_osdc_new_request(&fsc->client->osdc, &ci->i_layout, ceph_vino(inode), offset, &len, @@ -782,7 +785,7 @@ get_more_pages: &inode->i_mtime, true, 1); max_pages = req->r_num_pages; - alloc_page_vec(client, req); + alloc_page_vec(fsc, req); req->r_callback = writepages_finish; req->r_inode = inode; } @@ -794,10 +797,10 @@ get_more_pages: inode, page, page->index); writeback_stat = - atomic_long_inc_return(&client->writeback_count); + atomic_long_inc_return(&fsc->writeback_count); if (writeback_stat > CONGESTION_ON_THRESH( - client->mount_args->congestion_kb)) { - set_bdi_congested(&client->backing_dev_info, + fsc->mount_options->congestion_kb)) { + set_bdi_congested(&fsc->backing_dev_info, BLK_RW_ASYNC); } @@ -846,7 +849,7 @@ get_more_pages: op->payload_len = cpu_to_le32(len); req->r_request->hdr.data_len = cpu_to_le32(len); - ceph_osdc_start_request(&client->osdc, req, true); + ceph_osdc_start_request(&fsc->client->osdc, req, true); req = NULL; /* continue? */ @@ -915,7 +918,7 @@ static int ceph_update_writeable_page(struct file *file, { struct inode *inode = file->f_dentry->d_inode; struct ceph_inode_info *ci = ceph_inode(inode); - struct ceph_mds_client *mdsc = &ceph_inode_to_client(inode)->mdsc; + struct ceph_mds_client *mdsc = ceph_inode_to_client(inode)->mdsc; loff_t page_off = pos & PAGE_CACHE_MASK; int pos_in_page = pos & ~PAGE_CACHE_MASK; int end_in_page = pos_in_page + len; @@ -1053,8 +1056,8 @@ static int ceph_write_end(struct file *file, struct address_space *mapping, struct page *page, void *fsdata) { struct inode *inode = file->f_dentry->d_inode; - struct ceph_client *client = ceph_inode_to_client(inode); - struct ceph_mds_client *mdsc = &client->mdsc; + struct ceph_fs_client *fsc = ceph_inode_to_client(inode); + struct ceph_mds_client *mdsc = fsc->mdsc; unsigned from = pos & (PAGE_CACHE_SIZE - 1); int check_cap = 0; @@ -1123,7 +1126,7 @@ static int ceph_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf) { struct inode *inode = vma->vm_file->f_dentry->d_inode; struct page *page = vmf->page; - struct ceph_mds_client *mdsc = &ceph_inode_to_client(inode)->mdsc; + struct ceph_mds_client *mdsc = ceph_inode_to_client(inode)->mdsc; loff_t off = page->index << PAGE_CACHE_SHIFT; loff_t size, len; int ret; diff --git a/fs/ceph/caps.c b/fs/ceph/caps.c index 5e9da996a151..98ab13e2b71d 100644 --- a/fs/ceph/caps.c +++ b/fs/ceph/caps.c @@ -1,4 +1,4 @@ -#include "ceph_debug.h" +#include <linux/ceph/ceph_debug.h> #include <linux/fs.h> #include <linux/kernel.h> @@ -9,8 +9,9 @@ #include <linux/writeback.h> #include "super.h" -#include "decode.h" -#include "messenger.h" +#include "mds_client.h" +#include <linux/ceph/decode.h> +#include <linux/ceph/messenger.h> /* * Capability management @@ -287,11 +288,11 @@ void ceph_put_cap(struct ceph_mds_client *mdsc, struct ceph_cap *cap) spin_unlock(&mdsc->caps_list_lock); } -void ceph_reservation_status(struct ceph_client *client, +void ceph_reservation_status(struct ceph_fs_client *fsc, int *total, int *avail, int *used, int *reserved, int *min) { - struct ceph_mds_client *mdsc = &client->mdsc; + struct ceph_mds_client *mdsc = fsc->mdsc; if (total) *total = mdsc->caps_total_count; @@ -399,7 +400,7 @@ static void __insert_cap_node(struct ceph_inode_info *ci, static void __cap_set_timeouts(struct ceph_mds_client *mdsc, struct ceph_inode_info *ci) { - struct ceph_mount_args *ma = mdsc->client->mount_args; + struct ceph_mount_options *ma = mdsc->fsc->mount_options; ci->i_hold_caps_min = round_jiffies(jiffies + ma->caps_wanted_delay_min * HZ); @@ -515,7 +516,7 @@ int ceph_add_cap(struct inode *inode, unsigned seq, unsigned mseq, u64 realmino, int flags, struct ceph_cap_reservation *caps_reservation) { - struct ceph_mds_client *mdsc = &ceph_inode_to_client(inode)->mdsc; + struct ceph_mds_client *mdsc = ceph_inode_to_client(inode)->mdsc; struct ceph_inode_info *ci = ceph_inode(inode); struct ceph_cap *new_cap = NULL; struct ceph_cap *cap; @@ -873,7 +874,7 @@ void __ceph_remove_cap(struct ceph_cap *cap) struct ceph_mds_session *session = cap->session; struct ceph_inode_info *ci = cap->ci; struct ceph_mds_client *mdsc = - &ceph_sb_to_client(ci->vfs_inode.i_sb)->mdsc; + ceph_sb_to_client(ci->vfs_inode.i_sb)->mdsc; int removed = 0; dout("__ceph_remove_cap %p from %p\n", cap, &ci->vfs_inode); @@ -1210,7 +1211,7 @@ void __ceph_flush_snaps(struct ceph_inode_info *ci, int mds; struct ceph_cap_snap *capsnap; u32 mseq; - struct ceph_mds_client *mdsc = &ceph_inode_to_client(inode)->mdsc; + struct ceph_mds_client *mdsc = ceph_inode_to_client(inode)->mdsc; struct ceph_mds_session *session = NULL; /* if session != NULL, we hold session->s_mutex */ u64 next_follows = 0; /* keep track of how far we've gotten through the @@ -1336,7 +1337,7 @@ static void ceph_flush_snaps(struct ceph_inode_info *ci) void __ceph_mark_dirty_caps(struct ceph_inode_info *ci, int mask) { struct ceph_mds_client *mdsc = - &ceph_sb_to_client(ci->vfs_inode.i_sb)->mdsc; + ceph_sb_to_client(ci->vfs_inode.i_sb)->mdsc; struct inode *inode = &ci->vfs_inode; int was = ci->i_dirty_caps; int dirty = 0; @@ -1378,7 +1379,7 @@ void __ceph_mark_dirty_caps(struct ceph_inode_info *ci, int mask) static int __mark_caps_flushing(struct inode *inode, struct ceph_mds_session *session) { - struct ceph_mds_client *mdsc = &ceph_sb_to_client(inode->i_sb)->mdsc; + struct ceph_mds_client *mdsc = ceph_sb_to_client(inode->i_sb)->mdsc; struct ceph_inode_info *ci = ceph_inode(inode); int flushing; @@ -1416,17 +1417,6 @@ static int __mark_caps_flushing(struct inode *inode, /* * try to invalidate mapping pages without blocking. */ -static int mapping_is_empty(struct address_space *mapping) -{ - struct page *page = find_get_page(mapping, 0); - - if (!page) - return 1; - - put_page(page); - return 0; -} - static int try_nonblocking_invalidate(struct inode *inode) { struct ceph_inode_info *ci = ceph_inode(inode); @@ -1436,7 +1426,7 @@ static int try_nonblocking_invalidate(struct inode *inode) invalidate_mapping_pages(&inode->i_data, 0, -1); spin_lock(&inode->i_lock); - if (mapping_is_empty(&inode->i_data) && + if (inode->i_data.nrpages == 0 && invalidating_gen == ci->i_rdcache_gen) { /* success. */ dout("try_nonblocking_invalidate %p success\n", inode); @@ -1462,8 +1452,8 @@ static int try_nonblocking_invalidate(struct inode *inode) void ceph_check_caps(struct ceph_inode_info *ci, int flags, struct ceph_mds_session *session) { - struct ceph_client *client = ceph_inode_to_client(&ci->vfs_inode); - struct ceph_mds_client *mdsc = &client->mdsc; + struct ceph_fs_client *fsc = ceph_inode_to_client(&ci->vfs_inode); + struct ceph_mds_client *mdsc = fsc->mdsc; struct inode *inode = &ci->vfs_inode; struct ceph_cap *cap; int file_wanted, used; @@ -1533,7 +1523,7 @@ retry_locked: */ if ((!is_delayed || mdsc->stopping) && ci->i_wrbuffer_ref == 0 && /* no dirty pages... */ - ci->i_rdcache_gen && /* may have cached pages */ + inode->i_data.nrpages && /* have cached pages */ (file_wanted == 0 || /* no open files */ (revoking & (CEPH_CAP_FILE_CACHE| CEPH_CAP_FILE_LAZYIO))) && /* or revoking cache */ @@ -1706,7 +1696,7 @@ ack: static int try_flush_caps(struct inode *inode, struct ceph_mds_session *session, unsigned *flush_tid) { - struct ceph_mds_client *mdsc = &ceph_sb_to_client(inode->i_sb)->mdsc; + struct ceph_mds_client *mdsc = ceph_sb_to_client(inode->i_sb)->mdsc; struct ceph_inode_info *ci = ceph_inode(inode); int unlock_session = session ? 0 : 1; int flushing = 0; @@ -1872,7 +1862,7 @@ int ceph_write_inode(struct inode *inode, struct writeback_control *wbc) caps_are_flushed(inode, flush_tid)); } else { struct ceph_mds_client *mdsc = - &ceph_sb_to_client(inode->i_sb)->mdsc; + ceph_sb_to_client(inode->i_sb)->mdsc; spin_lock(&inode->i_lock); if (__ceph_caps_dirty(ci)) @@ -2465,7 +2455,7 @@ static void handle_cap_flush_ack(struct inode *inode, u64 flush_tid, __releases(inode->i_lock) { struct ceph_inode_info *ci = ceph_inode(inode); - struct ceph_mds_client *mdsc = &ceph_sb_to_client(inode->i_sb)->mdsc; + struct ceph_mds_client *mdsc = ceph_sb_to_client(inode->i_sb)->mdsc; unsigned seq = le32_to_cpu(m->seq); int dirty = le32_to_cpu(m->dirty); int cleaned = 0; @@ -2713,7 +2703,7 @@ void ceph_handle_caps(struct ceph_mds_session *session, struct ceph_msg *msg) { struct ceph_mds_client *mdsc = session->s_mdsc; - struct super_block *sb = mdsc->client->sb; + struct super_block *sb = mdsc->fsc->sb; struct inode *inode; struct ceph_cap *cap; struct ceph_mds_caps *h; diff --git a/fs/ceph/ceph_frag.c b/fs/ceph/ceph_frag.c index ab6cf35c4091..bdce8b1fbd06 100644 --- a/fs/ceph/ceph_frag.c +++ b/fs/ceph/ceph_frag.c @@ -1,7 +1,8 @@ /* * Ceph 'frag' type */ -#include "types.h" +#include <linux/module.h> +#include <linux/ceph/types.h> int ceph_frag_compare(__u32 a, __u32 b) { diff --git a/fs/ceph/debugfs.c b/fs/ceph/debugfs.c index 6fd8b20a8611..7ae1b3d55b58 100644 --- a/fs/ceph/debugfs.c +++ b/fs/ceph/debugfs.c @@ -1,4 +1,4 @@ -#include "ceph_debug.h" +#include <linux/ceph/ceph_debug.h> #include <linux/device.h> #include <linux/slab.h> @@ -7,143 +7,49 @@ #include <linux/debugfs.h> #include <linux/seq_file.h> +#include <linux/ceph/libceph.h> +#include <linux/ceph/mon_client.h> +#include <linux/ceph/auth.h> +#include <linux/ceph/debugfs.h> + #include "super.h" -#include "mds_client.h" -#include "mon_client.h" -#include "auth.h" #ifdef CONFIG_DEBUG_FS -/* - * Implement /sys/kernel/debug/ceph fun - * - * /sys/kernel/debug/ceph/client* - an instance of the ceph client - * .../osdmap - current osdmap - * .../mdsmap - current mdsmap - * .../monmap - current monmap - * .../osdc - active osd requests - * .../mdsc - active mds requests - * .../monc - mon client state - * .../dentry_lru - dump contents of dentry lru - * .../caps - expose cap (reservation) stats - * .../bdi - symlink to ../../bdi/something - */ - -static struct dentry *ceph_debugfs_dir; - -static int monmap_show(struct seq_file *s, void *p) -{ - int i; - struct ceph_client *client = s->private; - - if (client->monc.monmap == NULL) - return 0; - - seq_printf(s, "epoch %d\n", client->monc.monmap->epoch); - for (i = 0; i < client->monc.monmap->num_mon; i++) { - struct ceph_entity_inst *inst = - &client->monc.monmap->mon_inst[i]; - - seq_printf(s, "\t%s%lld\t%s\n", - ENTITY_NAME(inst->name), - pr_addr(&inst->addr.in_addr)); - } - return 0; -} +#include "mds_client.h" static int mdsmap_show(struct seq_file *s, void *p) { int i; - struct ceph_client *client = s->private; + struct ceph_fs_client *fsc = s->private; - if (client->mdsc.mdsmap == NULL) + if (fsc->mdsc == NULL || fsc->mdsc->mdsmap == NULL) return 0; - seq_printf(s, "epoch %d\n", client->mdsc.mdsmap->m_epoch); - seq_printf(s, "root %d\n", client->mdsc.mdsmap->m_root); + seq_printf(s, "epoch %d\n", fsc->mdsc->mdsmap->m_epoch); + seq_printf(s, "root %d\n", fsc->mdsc->mdsmap->m_root); seq_printf(s, "session_timeout %d\n", - client->mdsc.mdsmap->m_session_timeout); + fsc->mdsc->mdsmap->m_session_timeout); seq_printf(s, "session_autoclose %d\n", - client->mdsc.mdsmap->m_session_autoclose); - for (i = 0; i < client->mdsc.mdsmap->m_max_mds; i++) { + fsc->mdsc->mdsmap->m_session_autoclose); + for (i = 0; i < fsc->mdsc->mdsmap->m_max_mds; i++) { struct ceph_entity_addr *addr = - &client->mdsc.mdsmap->m_info[i].addr; - int state = client->mdsc.mdsmap->m_info[i].state; + &fsc->mdsc->mdsmap->m_info[i].addr; + int state = fsc->mdsc->mdsmap->m_info[i].state; - seq_printf(s, "\tmds%d\t%s\t(%s)\n", i, pr_addr(&addr->in_addr), + seq_printf(s, "\tmds%d\t%s\t(%s)\n", i, + ceph_pr_addr(&addr->in_addr), ceph_mds_state_name(state)); } return 0; } -static int osdmap_show(struct seq_file *s, void *p) -{ - int i; - struct ceph_client *client = s->private; - struct rb_node *n; - - if (client->osdc.osdmap == NULL) - return 0; - seq_printf(s, "epoch %d\n", client->osdc.osdmap->epoch); - seq_printf(s, "flags%s%s\n", - (client->osdc.osdmap->flags & CEPH_OSDMAP_NEARFULL) ? - " NEARFULL" : "", - (client->osdc.osdmap->flags & CEPH_OSDMAP_FULL) ? - " FULL" : ""); - for (n = rb_first(&client->osdc.osdmap->pg_pools); n; n = rb_next(n)) { - struct ceph_pg_pool_info *pool = - rb_entry(n, struct ceph_pg_pool_info, node); - seq_printf(s, "pg_pool %d pg_num %d / %d, lpg_num %d / %d\n", - pool->id, pool->v.pg_num, pool->pg_num_mask, - pool->v.lpg_num, pool->lpg_num_mask); - } - for (i = 0; i < client->osdc.osdmap->max_osd; i++) { - struct ceph_entity_addr *addr = - &client->osdc.osdmap->osd_addr[i]; - int state = client->osdc.osdmap->osd_state[i]; - char sb[64]; - - seq_printf(s, "\tosd%d\t%s\t%3d%%\t(%s)\n", - i, pr_addr(&addr->in_addr), - ((client->osdc.osdmap->osd_weight[i]*100) >> 16), - ceph_osdmap_state_str(sb, sizeof(sb), state)); - } - return 0; -} - -static int monc_show(struct seq_file *s, void *p) -{ - struct ceph_client *client = s->private; - struct ceph_mon_generic_request *req; - struct ceph_mon_client *monc = &client->monc; - struct rb_node *rp; - - mutex_lock(&monc->mutex); - - if (monc->have_mdsmap) - seq_printf(s, "have mdsmap %u\n", (unsigned)monc->have_mdsmap); - if (monc->have_osdmap) - seq_printf(s, "have osdmap %u\n", (unsigned)monc->have_osdmap); - if (monc->want_next_osdmap) - seq_printf(s, "want next osdmap\n"); - - for (rp = rb_first(&monc->generic_request_tree); rp; rp = rb_next(rp)) { - __u16 op; - req = rb_entry(rp, struct ceph_mon_generic_request, node); - op = le16_to_cpu(req->request->hdr.type); - if (op == CEPH_MSG_STATFS) - seq_printf(s, "%lld statfs\n", req->tid); - else - seq_printf(s, "%lld unknown\n", req->tid); - } - - mutex_unlock(&monc->mutex); - return 0; -} - +/* + * mdsc debugfs + */ static int mdsc_show(struct seq_file *s, void *p) { - struct ceph_client *client = s->private; - struct ceph_mds_client *mdsc = &client->mdsc; + struct ceph_fs_client *fsc = s->private; + struct ceph_mds_client *mdsc = fsc->mdsc; struct ceph_mds_request *req; struct rb_node *rp; int pathlen; @@ -214,61 +120,12 @@ static int mdsc_show(struct seq_file *s, void *p) return 0; } -static int osdc_show(struct seq_file *s, void *pp) -{ - struct ceph_client *client = s->private; - struct ceph_osd_client *osdc = &client->osdc; - struct rb_node *p; - - mutex_lock(&osdc->request_mutex); - for (p = rb_first(&osdc->requests); p; p = rb_next(p)) { - struct ceph_osd_request *req; - struct ceph_osd_request_head *head; - struct ceph_osd_op *op; - int num_ops; - int opcode, olen; - int i; - - req = rb_entry(p, struct ceph_osd_request, r_node); - - seq_printf(s, "%lld\tosd%d\t%d.%x\t", req->r_tid, - req->r_osd ? req->r_osd->o_osd : -1, - le32_to_cpu(req->r_pgid.pool), - le16_to_cpu(req->r_pgid.ps)); - - head = req->r_request->front.iov_base; - op = (void *)(head + 1); - - num_ops = le16_to_cpu(head->num_ops); - olen = le32_to_cpu(head->object_len); - seq_printf(s, "%.*s", olen, - (const char *)(head->ops + num_ops)); - - if (req->r_reassert_version.epoch) - seq_printf(s, "\t%u'%llu", - (unsigned)le32_to_cpu(req->r_reassert_version.epoch), - le64_to_cpu(req->r_reassert_version.version)); - else - seq_printf(s, "\t"); - - for (i = 0; i < num_ops; i++) { - opcode = le16_to_cpu(op->op); - seq_printf(s, "\t%s", ceph_osd_op_name(opcode)); - op++; - } - - seq_printf(s, "\n"); - } - mutex_unlock(&osdc->request_mutex); - return 0; -} - static int caps_show(struct seq_file *s, void *p) { - struct ceph_client *client = s->private; + struct ceph_fs_client *fsc = s->private; int total, avail, used, reserved, min; - ceph_reservation_status(client, &total, &avail, &used, &reserved, &min); + ceph_reservation_status(fsc, &total, &avail, &used, &reserved, &min); seq_printf(s, "total\t\t%d\n" "avail\t\t%d\n" "used\t\t%d\n" @@ -280,8 +137,8 @@ static int caps_show(struct seq_file *s, void *p) static int dentry_lru_show(struct seq_file *s, void *ptr) { - struct ceph_client *client = s->private; - struct ceph_mds_client *mdsc = &client->mdsc; + struct ceph_fs_client *fsc = s->private; + struct ceph_mds_client *mdsc = fsc->mdsc; struct ceph_dentry_info *di; spin_lock(&mdsc->dentry_lru_lock); @@ -295,199 +152,124 @@ static int dentry_lru_show(struct seq_file *s, void *ptr) return 0; } -#define DEFINE_SHOW_FUNC(name) \ -static int name##_open(struct inode *inode, struct file *file) \ -{ \ - struct seq_file *sf; \ - int ret; \ - \ - ret = single_open(file, name, NULL); \ - sf = file->private_data; \ - sf->private = inode->i_private; \ - return ret; \ -} \ - \ -static const struct file_operations name##_fops = { \ - .open = name##_open, \ - .read = seq_read, \ - .llseek = seq_lseek, \ - .release = single_release, \ -}; - -DEFINE_SHOW_FUNC(monmap_show) -DEFINE_SHOW_FUNC(mdsmap_show) -DEFINE_SHOW_FUNC(osdmap_show) -DEFINE_SHOW_FUNC(monc_show) -DEFINE_SHOW_FUNC(mdsc_show) -DEFINE_SHOW_FUNC(osdc_show) -DEFINE_SHOW_FUNC(dentry_lru_show) -DEFINE_SHOW_FUNC(caps_show) +CEPH_DEFINE_SHOW_FUNC(mdsmap_show) +CEPH_DEFINE_SHOW_FUNC(mdsc_show) +CEPH_DEFINE_SHOW_FUNC(caps_show) +CEPH_DEFINE_SHOW_FUNC(dentry_lru_show) + +/* + * debugfs + */ static int congestion_kb_set(void *data, u64 val) { - struct ceph_client *client = (struct ceph_client *)data; - - if (client) - client->mount_args->congestion_kb = (int)val; + struct ceph_fs_client *fsc = (struct ceph_fs_client *)data; + fsc->mount_options->congestion_kb = (int)val; return 0; } static int congestion_kb_get(void *data, u64 *val) { - struct ceph_client *client = (struct ceph_client *)data; - - if (client) - *val = (u64)client->mount_args->congestion_kb; + struct ceph_fs_client *fsc = (struct ceph_fs_client *)data; + *val = (u64)fsc->mount_options->congestion_kb; return 0; } - DEFINE_SIMPLE_ATTRIBUTE(congestion_kb_fops, congestion_kb_get, congestion_kb_set, "%llu\n"); -int __init ceph_debugfs_init(void) -{ - ceph_debugfs_dir = debugfs_create_dir("ceph", NULL); - if (!ceph_debugfs_dir) - return -ENOMEM; - return 0; -} -void ceph_debugfs_cleanup(void) +void ceph_fs_debugfs_cleanup(struct ceph_fs_client *fsc) { - debugfs_remove(ceph_debugfs_dir); + dout("ceph_fs_debugfs_cleanup\n"); + debugfs_remove(fsc->debugfs_bdi); + debugfs_remove(fsc->debugfs_congestion_kb); + debugfs_remove(fsc->debugfs_mdsmap); + debugfs_remove(fsc->debugfs_caps); + debugfs_remove(fsc->debugfs_mdsc); + debugfs_remove(fsc->debugfs_dentry_lru); } -int ceph_debugfs_client_init(struct ceph_client *client) +int ceph_fs_debugfs_init(struct ceph_fs_client *fsc) { - int ret = 0; - char name[80]; - - snprintf(name, sizeof(name), "%pU.client%lld", &client->fsid, - client->monc.auth->global_id); + char name[100]; + int err = -ENOMEM; - client->debugfs_dir = debugfs_create_dir(name, ceph_debugfs_dir); - if (!client->debugfs_dir) - goto out; - - client->monc.debugfs_file = debugfs_create_file("monc", - 0600, - client->debugfs_dir, - client, - &monc_show_fops); - if (!client->monc.debugfs_file) + dout("ceph_fs_debugfs_init\n"); + fsc->debugfs_congestion_kb = + debugfs_create_file("writeback_congestion_kb", + 0600, + fsc->client->debugfs_dir, + fsc, + &congestion_kb_fops); + if (!fsc->debugfs_congestion_kb) goto out; - client->mdsc.debugfs_file = debugfs_create_file("mdsc", - 0600, - client->debugfs_dir, - client, - &mdsc_show_fops); - if (!client->mdsc.debugfs_file) - goto out; + dout("a\n"); - client->osdc.debugfs_file = debugfs_create_file("osdc", - 0600, - client->debugfs_dir, - client, - &osdc_show_fops); - if (!client->osdc.debugfs_file) + snprintf(name, sizeof(name), "../../bdi/%s", + dev_name(fsc->backing_dev_info.dev)); + fsc->debugfs_bdi = + debugfs_create_symlink("bdi", + fsc->client->debugfs_dir, + name); + if (!fsc->debugfs_bdi) goto out; - client->debugfs_monmap = debugfs_create_file("monmap", + dout("b\n"); + fsc->debugfs_mdsmap = debugfs_create_file("mdsmap", 0600, - client->debugfs_dir, - client, - &monmap_show_fops); - if (!client->debugfs_monmap) - goto out; - - client->debugfs_mdsmap = debugfs_create_file("mdsmap", - 0600, - client->debugfs_dir, - client, + fsc->client->debugfs_dir, + fsc, &mdsmap_show_fops); - if (!client->debugfs_mdsmap) - goto out; - - client->debugfs_osdmap = debugfs_create_file("osdmap", - 0600, - client->debugfs_dir, - client, - &osdmap_show_fops); - if (!client->debugfs_osdmap) + if (!fsc->debugfs_mdsmap) goto out; - client->debugfs_dentry_lru = debugfs_create_file("dentry_lru", - 0600, - client->debugfs_dir, - client, - &dentry_lru_show_fops); - if (!client->debugfs_dentry_lru) + dout("ca\n"); + fsc->debugfs_mdsc = debugfs_create_file("mdsc", + 0600, + fsc->client->debugfs_dir, + fsc, + &mdsc_show_fops); + if (!fsc->debugfs_mdsc) goto out; - client->debugfs_caps = debugfs_create_file("caps", + dout("da\n"); + fsc->debugfs_caps = debugfs_create_file("caps", 0400, - client->debugfs_dir, - client, + fsc->client->debugfs_dir, + fsc, &caps_show_fops); - if (!client->debugfs_caps) + if (!fsc->debugfs_caps) goto out; - client->debugfs_congestion_kb = - debugfs_create_file("writeback_congestion_kb", - 0600, - client->debugfs_dir, - client, - &congestion_kb_fops); - if (!client->debugfs_congestion_kb) + dout("ea\n"); + fsc->debugfs_dentry_lru = debugfs_create_file("dentry_lru", + 0600, + fsc->client->debugfs_dir, + fsc, + &dentry_lru_show_fops); + if (!fsc->debugfs_dentry_lru) goto out; - sprintf(name, "../../bdi/%s", dev_name(client->sb->s_bdi->dev)); - client->debugfs_bdi = debugfs_create_symlink("bdi", client->debugfs_dir, - name); - return 0; out: - ceph_debugfs_client_cleanup(client); - return ret; + ceph_fs_debugfs_cleanup(fsc); + return err; } -void ceph_debugfs_client_cleanup(struct ceph_client *client) -{ - debugfs_remove(client->debugfs_bdi); - debugfs_remove(client->debugfs_caps); - debugfs_remove(client->debugfs_dentry_lru); - debugfs_remove(client->debugfs_osdmap); - debugfs_remove(client->debugfs_mdsmap); - debugfs_remove(client->debugfs_monmap); - debugfs_remove(client->osdc.debugfs_file); - debugfs_remove(client->mdsc.debugfs_file); - debugfs_remove(client->monc.debugfs_file); - debugfs_remove(client->debugfs_congestion_kb); - debugfs_remove(client->debugfs_dir); -} #else /* CONFIG_DEBUG_FS */ -int __init ceph_debugfs_init(void) -{ - return 0; -} - -void ceph_debugfs_cleanup(void) -{ -} - -int ceph_debugfs_client_init(struct ceph_client *client) +int ceph_fs_debugfs_init(struct ceph_fs_client *fsc) { return 0; } -void ceph_debugfs_client_cleanup(struct ceph_client *client) +void ceph_fs_debugfs_cleanup(struct ceph_fs_client *fsc) { } diff --git a/fs/ceph/dir.c b/fs/ceph/dir.c index a1986eb52045..e0a2dc6fcafc 100644 --- a/fs/ceph/dir.c +++ b/fs/ceph/dir.c @@ -1,4 +1,4 @@ -#include "ceph_debug.h" +#include <linux/ceph/ceph_debug.h> #include <linux/spinlock.h> #include <linux/fs_struct.h> @@ -7,6 +7,7 @@ #include <linux/sched.h> #include "super.h" +#include "mds_client.h" /* * Directory operations: readdir, lookup, create, link, unlink, @@ -94,10 +95,7 @@ static unsigned fpos_off(loff_t p) */ static int __dcache_readdir(struct file *filp, void *dirent, filldir_t filldir) - __releases(inode->i_lock) - __acquires(inode->i_lock) { - struct inode *inode = filp->f_dentry->d_inode; struct ceph_file_info *fi = filp->private_data; struct dentry *parent = filp->f_dentry; struct inode *dir = parent->d_inode; @@ -153,7 +151,6 @@ more: atomic_inc(&dentry->d_count); spin_unlock(&dcache_lock); - spin_unlock(&inode->i_lock); dout(" %llu (%llu) dentry %p %.*s %p\n", di->offset, filp->f_pos, dentry, dentry->d_name.len, dentry->d_name.name, dentry->d_inode); @@ -171,35 +168,30 @@ more: } else { dput(last); } - last = NULL; } - - spin_lock(&inode->i_lock); - spin_lock(&dcache_lock); - last = dentry; if (err < 0) - goto out_unlock; + goto out; - p = p->prev; filp->f_pos++; /* make sure a dentry wasn't dropped while we didn't have dcache_lock */ - if ((ceph_inode(dir)->i_ceph_flags & CEPH_I_COMPLETE)) - goto more; - dout(" lost I_COMPLETE on %p; falling back to mds\n", dir); - err = -EAGAIN; + if (!ceph_i_test(dir, CEPH_I_COMPLETE)) { + dout(" lost I_COMPLETE on %p; falling back to mds\n", dir); + err = -EAGAIN; + goto out; + } + + spin_lock(&dcache_lock); + p = p->prev; /* advance to next dentry */ + goto more; out_unlock: spin_unlock(&dcache_lock); - - if (last) { - spin_unlock(&inode->i_lock); +out: + if (last) dput(last); - spin_lock(&inode->i_lock); - } - return err; } @@ -227,15 +219,15 @@ static int ceph_readdir(struct file *filp, void *dirent, filldir_t filldir) struct ceph_file_info *fi = filp->private_data; struct inode *inode = filp->f_dentry->d_inode; struct ceph_inode_info *ci = ceph_inode(inode); - struct ceph_client *client = ceph_inode_to_client(inode); - struct ceph_mds_client *mdsc = &client->mdsc; + struct ceph_fs_client *fsc = ceph_inode_to_client(inode); + struct ceph_mds_client *mdsc = fsc->mdsc; unsigned frag = fpos_frag(filp->f_pos); int off = fpos_off(filp->f_pos); int err; u32 ftype; struct ceph_mds_reply_info_parsed *rinfo; - const int max_entries = client->mount_args->max_readdir; - const int max_bytes = client->mount_args->max_readdir_bytes; + const int max_entries = fsc->mount_options->max_readdir; + const int max_bytes = fsc->mount_options->max_readdir_bytes; dout("readdir %p filp %p frag %u off %u\n", inode, filp, frag, off); if (fi->at_end) @@ -267,17 +259,17 @@ static int ceph_readdir(struct file *filp, void *dirent, filldir_t filldir) /* can we use the dcache? */ spin_lock(&inode->i_lock); if ((filp->f_pos == 2 || fi->dentry) && - !ceph_test_opt(client, NOASYNCREADDIR) && + !ceph_test_mount_opt(fsc, NOASYNCREADDIR) && ceph_snap(inode) != CEPH_SNAPDIR && (ci->i_ceph_flags & CEPH_I_COMPLETE) && __ceph_caps_issued_mask(ci, CEPH_CAP_FILE_SHARED, 1)) { + spin_unlock(&inode->i_lock); err = __dcache_readdir(filp, dirent, filldir); - if (err != -EAGAIN) { - spin_unlock(&inode->i_lock); + if (err != -EAGAIN) return err; - } + } else { + spin_unlock(&inode->i_lock); } - spin_unlock(&inode->i_lock); if (fi->dentry) { err = note_last_dentry(fi, fi->dentry->d_name.name, fi->dentry->d_name.len); @@ -487,14 +479,13 @@ static loff_t ceph_dir_llseek(struct file *file, loff_t offset, int origin) struct dentry *ceph_finish_lookup(struct ceph_mds_request *req, struct dentry *dentry, int err) { - struct ceph_client *client = ceph_sb_to_client(dentry->d_sb); + struct ceph_fs_client *fsc = ceph_sb_to_client(dentry->d_sb); struct inode *parent = dentry->d_parent->d_inode; /* .snap dir? */ if (err == -ENOENT && - ceph_vino(parent).ino != CEPH_INO_ROOT && /* no .snap in root dir */ strcmp(dentry->d_name.name, - client->mount_args->snapdir_name) == 0) { + fsc->mount_options->snapdir_name) == 0) { struct inode *inode = ceph_get_snapdir(parent); dout("ENOENT on snapdir %p '%.*s', linking to snapdir %p\n", dentry, dentry->d_name.len, dentry->d_name.name, inode); @@ -539,8 +530,8 @@ static int is_root_ceph_dentry(struct inode *inode, struct dentry *dentry) static struct dentry *ceph_lookup(struct inode *dir, struct dentry *dentry, struct nameidata *nd) { - struct ceph_client *client = ceph_sb_to_client(dir->i_sb); - struct ceph_mds_client *mdsc = &client->mdsc; + struct ceph_fs_client *fsc = ceph_sb_to_client(dir->i_sb); + struct ceph_mds_client *mdsc = fsc->mdsc; struct ceph_mds_request *req; int op; int err; @@ -572,7 +563,7 @@ static struct dentry *ceph_lookup(struct inode *dir, struct dentry *dentry, spin_lock(&dir->i_lock); dout(" dir %p flags are %d\n", dir, ci->i_ceph_flags); if (strncmp(dentry->d_name.name, - client->mount_args->snapdir_name, + fsc->mount_options->snapdir_name, dentry->d_name.len) && !is_root_ceph_dentry(dir, dentry) && (ci->i_ceph_flags & CEPH_I_COMPLETE) && @@ -629,8 +620,8 @@ int ceph_handle_notrace_create(struct inode *dir, struct dentry *dentry) static int ceph_mknod(struct inode *dir, struct dentry *dentry, int mode, dev_t rdev) { - struct ceph_client *client = ceph_sb_to_client(dir->i_sb); - struct ceph_mds_client *mdsc = &client->mdsc; + struct ceph_fs_client *fsc = ceph_sb_to_client(dir->i_sb); + struct ceph_mds_client *mdsc = fsc->mdsc; struct ceph_mds_request *req; int err; @@ -685,8 +676,8 @@ static int ceph_create(struct inode *dir, struct dentry *dentry, int mode, static int ceph_symlink(struct inode *dir, struct dentry *dentry, const char *dest) { - struct ceph_client *client = ceph_sb_to_client(dir->i_sb); - struct ceph_mds_client *mdsc = &client->mdsc; + struct ceph_fs_client *fsc = ceph_sb_to_client(dir->i_sb); + struct ceph_mds_client *mdsc = fsc->mdsc; struct ceph_mds_request *req; int err; @@ -716,8 +707,8 @@ static int ceph_symlink(struct inode *dir, struct dentry *dentry, static int ceph_mkdir(struct inode *dir, struct dentry *dentry, int mode) { - struct ceph_client *client = ceph_sb_to_client(dir->i_sb); - struct ceph_mds_client *mdsc = &client->mdsc; + struct ceph_fs_client *fsc = ceph_sb_to_client(dir->i_sb); + struct ceph_mds_client *mdsc = fsc->mdsc; struct ceph_mds_request *req; int err = -EROFS; int op; @@ -758,8 +749,8 @@ out: static int ceph_link(struct dentry *old_dentry, struct inode *dir, struct dentry *dentry) { - struct ceph_client *client = ceph_sb_to_client(dir->i_sb); - struct ceph_mds_client *mdsc = &client->mdsc; + struct ceph_fs_client *fsc = ceph_sb_to_client(dir->i_sb); + struct ceph_mds_client *mdsc = fsc->mdsc; struct ceph_mds_request *req; int err; @@ -813,8 +804,8 @@ static int drop_caps_for_unlink(struct inode *inode) */ static int ceph_unlink(struct inode *dir, struct dentry *dentry) { - struct ceph_client *client = ceph_sb_to_client(dir->i_sb); - struct ceph_mds_client *mdsc = &client->mdsc; + struct ceph_fs_client *fsc = ceph_sb_to_client(dir->i_sb); + struct ceph_mds_client *mdsc = fsc->mdsc; struct inode *inode = dentry->d_inode; struct ceph_mds_request *req; int err = -EROFS; @@ -854,8 +845,8 @@ out: static int ceph_rename(struct inode *old_dir, struct dentry *old_dentry, struct inode *new_dir, struct dentry *new_dentry) { - struct ceph_client *client = ceph_sb_to_client(old_dir->i_sb); - struct ceph_mds_client *mdsc = &client->mdsc; + struct ceph_fs_client *fsc = ceph_sb_to_client(old_dir->i_sb); + struct ceph_mds_client *mdsc = fsc->mdsc; struct ceph_mds_request *req; int err; @@ -1076,7 +1067,7 @@ static ssize_t ceph_read_dir(struct file *file, char __user *buf, size_t size, struct ceph_inode_info *ci = ceph_inode(inode); int left; - if (!ceph_test_opt(ceph_sb_to_client(inode->i_sb), DIRSTAT)) + if (!ceph_test_mount_opt(ceph_sb_to_client(inode->i_sb), DIRSTAT)) return -EISDIR; if (!cf->dir_info) { @@ -1177,7 +1168,7 @@ void ceph_dentry_lru_add(struct dentry *dn) dout("dentry_lru_add %p %p '%.*s'\n", di, dn, dn->d_name.len, dn->d_name.name); if (di) { - mdsc = &ceph_sb_to_client(dn->d_sb)->mdsc; + mdsc = ceph_sb_to_client(dn->d_sb)->mdsc; spin_lock(&mdsc->dentry_lru_lock); list_add_tail(&di->lru, &mdsc->dentry_lru); mdsc->num_dentry++; @@ -1193,7 +1184,7 @@ void ceph_dentry_lru_touch(struct dentry *dn) dout("dentry_lru_touch %p %p '%.*s' (offset %lld)\n", di, dn, dn->d_name.len, dn->d_name.name, di->offset); if (di) { - mdsc = &ceph_sb_to_client(dn->d_sb)->mdsc; + mdsc = ceph_sb_to_client(dn->d_sb)->mdsc; spin_lock(&mdsc->dentry_lru_lock); list_move_tail(&di->lru, &mdsc->dentry_lru); spin_unlock(&mdsc->dentry_lru_lock); @@ -1208,7 +1199,7 @@ void ceph_dentry_lru_del(struct dentry *dn) dout("dentry_lru_del %p %p '%.*s'\n", di, dn, dn->d_name.len, dn->d_name.name); if (di) { - mdsc = &ceph_sb_to_client(dn->d_sb)->mdsc; + mdsc = ceph_sb_to_client(dn->d_sb)->mdsc; spin_lock(&mdsc->dentry_lru_lock); list_del_init(&di->lru); mdsc->num_dentry--; diff --git a/fs/ceph/export.c b/fs/ceph/export.c index e38423e82f2e..2297d9426992 100644 --- a/fs/ceph/export.c +++ b/fs/ceph/export.c @@ -1,10 +1,11 @@ -#include "ceph_debug.h" +#include <linux/ceph/ceph_debug.h> #include <linux/exportfs.h> #include <linux/slab.h> #include <asm/unaligned.h> #include "super.h" +#include "mds_client.h" /* * NFS export support @@ -120,7 +121,7 @@ static struct dentry *__fh_to_dentry(struct super_block *sb, static struct dentry *__cfh_to_dentry(struct super_block *sb, struct ceph_nfs_confh *cfh) { - struct ceph_mds_client *mdsc = &ceph_sb_to_client(sb)->mdsc; + struct ceph_mds_client *mdsc = ceph_sb_to_client(sb)->mdsc; struct inode *inode; struct dentry *dentry; struct ceph_vino vino; diff --git a/fs/ceph/file.c b/fs/ceph/file.c index 66e4da6dba22..e77c28cf3690 100644 --- a/fs/ceph/file.c +++ b/fs/ceph/file.c @@ -1,5 +1,6 @@ -#include "ceph_debug.h" +#include <linux/ceph/ceph_debug.h> +#include <linux/module.h> #include <linux/sched.h> #include <linux/slab.h> #include <linux/file.h> @@ -38,8 +39,8 @@ static struct ceph_mds_request * prepare_open_request(struct super_block *sb, int flags, int create_mode) { - struct ceph_client *client = ceph_sb_to_client(sb); - struct ceph_mds_client *mdsc = &client->mdsc; + struct ceph_fs_client *fsc = ceph_sb_to_client(sb); + struct ceph_mds_client *mdsc = fsc->mdsc; struct ceph_mds_request *req; int want_auth = USE_ANY_MDS; int op = (flags & O_CREAT) ? CEPH_MDS_OP_CREATE : CEPH_MDS_OP_OPEN; @@ -117,8 +118,8 @@ static int ceph_init_file(struct inode *inode, struct file *file, int fmode) int ceph_open(struct inode *inode, struct file *file) { struct ceph_inode_info *ci = ceph_inode(inode); - struct ceph_client *client = ceph_sb_to_client(inode->i_sb); - struct ceph_mds_client *mdsc = &client->mdsc; + struct ceph_fs_client *fsc = ceph_sb_to_client(inode->i_sb); + struct ceph_mds_client *mdsc = fsc->mdsc; struct ceph_mds_request *req; struct ceph_file_info *cf = file->private_data; struct inode *parent_inode = file->f_dentry->d_parent->d_inode; @@ -216,8 +217,8 @@ struct dentry *ceph_lookup_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd, int mode, int locked_dir) { - struct ceph_client *client = ceph_sb_to_client(dir->i_sb); - struct ceph_mds_client *mdsc = &client->mdsc; + struct ceph_fs_client *fsc = ceph_sb_to_client(dir->i_sb); + struct ceph_mds_client *mdsc = fsc->mdsc; struct file *file = nd->intent.open.file; struct inode *parent_inode = get_dentry_parent_inode(file->f_dentry); struct ceph_mds_request *req; @@ -270,163 +271,6 @@ int ceph_release(struct inode *inode, struct file *file) } /* - * build a vector of user pages - */ -static struct page **get_direct_page_vector(const char __user *data, - int num_pages, - loff_t off, size_t len) -{ - struct page **pages; - int rc; - - pages = kmalloc(sizeof(*pages) * num_pages, GFP_NOFS); - if (!pages) - return ERR_PTR(-ENOMEM); - - down_read(¤t->mm->mmap_sem); - rc = get_user_pages(current, current->mm, (unsigned long)data, - num_pages, 0, 0, pages, NULL); - up_read(¤t->mm->mmap_sem); - if (rc < 0) - goto fail; - return pages; - -fail: - kfree(pages); - return ERR_PTR(rc); -} - -static void put_page_vector(struct page **pages, int num_pages) -{ - int i; - - for (i = 0; i < num_pages; i++) - put_page(pages[i]); - kfree(pages); -} - -void ceph_release_page_vector(struct page **pages, int num_pages) -{ - int i; - - for (i = 0; i < num_pages; i++) - __free_pages(pages[i], 0); - kfree(pages); -} - -/* - * allocate a vector new pages - */ -static struct page **ceph_alloc_page_vector(int num_pages, gfp_t flags) -{ - struct page **pages; - int i; - - pages = kmalloc(sizeof(*pages) * num_pages, flags); - if (!pages) - return ERR_PTR(-ENOMEM); - for (i = 0; i < num_pages; i++) { - pages[i] = __page_cache_alloc(flags); - if (pages[i] == NULL) { - ceph_release_page_vector(pages, i); - return ERR_PTR(-ENOMEM); - } - } - return pages; -} - -/* - * copy user data into a page vector - */ -static int copy_user_to_page_vector(struct page **pages, - const char __user *data, - loff_t off, size_t len) -{ - int i = 0; - int po = off & ~PAGE_CACHE_MASK; - int left = len; - int l, bad; - - while (left > 0) { - l = min_t(int, PAGE_CACHE_SIZE-po, left); - bad = copy_from_user(page_address(pages[i]) + po, data, l); - if (bad == l) - return -EFAULT; - data += l - bad; - left -= l - bad; - po += l - bad; - if (po == PAGE_CACHE_SIZE) { - po = 0; - i++; - } - } - return len; -} - -/* - * copy user data from a page vector into a user pointer - */ -static int copy_page_vector_to_user(struct page **pages, char __user *data, - loff_t off, size_t len) -{ - int i = 0; - int po = off & ~PAGE_CACHE_MASK; - int left = len; - int l, bad; - - while (left > 0) { - l = min_t(int, left, PAGE_CACHE_SIZE-po); - bad = copy_to_user(data, page_address(pages[i]) + po, l); - if (bad == l) - return -EFAULT; - data += l - bad; - left -= l - bad; - if (po) { - po += l - bad; - if (po == PAGE_CACHE_SIZE) - po = 0; - } - i++; - } - return len; -} - -/* - * Zero an extent within a page vector. Offset is relative to the - * start of the first page. - */ -static void zero_page_vector_range(int off, int len, struct page **pages) -{ - int i = off >> PAGE_CACHE_SHIFT; - - off &= ~PAGE_CACHE_MASK; - - dout("zero_page_vector_page %u~%u\n", off, len); - - /* leading partial page? */ - if (off) { - int end = min((int)PAGE_CACHE_SIZE, off + len); - dout("zeroing %d %p head from %d\n", i, pages[i], - (int)off); - zero_user_segment(pages[i], off, end); - len -= (end - off); - i++; - } - while (len >= PAGE_CACHE_SIZE) { - dout("zeroing %d %p len=%d\n", i, pages[i], len); - zero_user_segment(pages[i], 0, PAGE_CACHE_SIZE); - len -= PAGE_CACHE_SIZE; - i++; - } - /* trailing partial page? */ - if (len) { - dout("zeroing %d %p tail to %d\n", i, pages[i], (int)len); - zero_user_segment(pages[i], 0, len); - } -} - - -/* * Read a range of bytes striped over one or more objects. Iterate over * objects we stripe over. (That's not atomic, but good enough for now.) * @@ -438,7 +282,7 @@ static int striped_read(struct inode *inode, struct page **pages, int num_pages, int *checkeof) { - struct ceph_client *client = ceph_inode_to_client(inode); + struct ceph_fs_client *fsc = ceph_inode_to_client(inode); struct ceph_inode_info *ci = ceph_inode(inode); u64 pos, this_len; int page_off = off & ~PAGE_CACHE_MASK; /* first byte's offset in page */ @@ -459,7 +303,7 @@ static int striped_read(struct inode *inode, more: this_len = left; - ret = ceph_osdc_readpages(&client->osdc, ceph_vino(inode), + ret = ceph_osdc_readpages(&fsc->client->osdc, ceph_vino(inode), &ci->i_layout, pos, &this_len, ci->i_truncate_seq, ci->i_truncate_size, @@ -477,8 +321,8 @@ more: if (read < pos - off) { dout(" zero gap %llu to %llu\n", off + read, pos); - zero_page_vector_range(page_off + read, - pos - off - read, pages); + ceph_zero_page_vector_range(page_off + read, + pos - off - read, pages); } pos += ret; read = pos - off; @@ -495,8 +339,8 @@ more: /* was original extent fully inside i_size? */ if (pos + left <= inode->i_size) { dout("zero tail\n"); - zero_page_vector_range(page_off + read, len - read, - pages); + ceph_zero_page_vector_range(page_off + read, len - read, + pages); read = len; goto out; } @@ -531,7 +375,7 @@ static ssize_t ceph_sync_read(struct file *file, char __user *data, (file->f_flags & O_DIRECT) ? "O_DIRECT" : ""); if (file->f_flags & O_DIRECT) { - pages = get_direct_page_vector(data, num_pages, off, len); + pages = ceph_get_direct_page_vector(data, num_pages, off, len); /* * flush any page cache pages in this range. this @@ -552,13 +396,13 @@ static ssize_t ceph_sync_read(struct file *file, char __user *data, ret = striped_read(inode, off, len, pages, num_pages, checkeof); if (ret >= 0 && (file->f_flags & O_DIRECT) == 0) - ret = copy_page_vector_to_user(pages, data, off, ret); + ret = ceph_copy_page_vector_to_user(pages, data, off, ret); if (ret >= 0) *poff = off + ret; done: if (file->f_flags & O_DIRECT) - put_page_vector(pages, num_pages); + ceph_put_page_vector(pages, num_pages); else ceph_release_page_vector(pages, num_pages); dout("sync_read result %d\n", ret); @@ -594,7 +438,7 @@ static ssize_t ceph_sync_write(struct file *file, const char __user *data, { struct inode *inode = file->f_dentry->d_inode; struct ceph_inode_info *ci = ceph_inode(inode); - struct ceph_client *client = ceph_inode_to_client(inode); + struct ceph_fs_client *fsc = ceph_inode_to_client(inode); struct ceph_osd_request *req; struct page **pages; int num_pages; @@ -642,7 +486,7 @@ static ssize_t ceph_sync_write(struct file *file, const char __user *data, */ more: len = left; - req = ceph_osdc_new_request(&client->osdc, &ci->i_layout, + req = ceph_osdc_new_request(&fsc->client->osdc, &ci->i_layout, ceph_vino(inode), pos, &len, CEPH_OSD_OP_WRITE, flags, ci->i_snap_realm->cached_context, @@ -655,7 +499,7 @@ more: num_pages = calc_pages_for(pos, len); if (file->f_flags & O_DIRECT) { - pages = get_direct_page_vector(data, num_pages, pos, len); + pages = ceph_get_direct_page_vector(data, num_pages, pos, len); if (IS_ERR(pages)) { ret = PTR_ERR(pages); goto out; @@ -673,7 +517,7 @@ more: ret = PTR_ERR(pages); goto out; } - ret = copy_user_to_page_vector(pages, data, pos, len); + ret = ceph_copy_user_to_page_vector(pages, data, pos, len); if (ret < 0) { ceph_release_page_vector(pages, num_pages); goto out; @@ -689,7 +533,7 @@ more: req->r_num_pages = num_pages; req->r_inode = inode; - ret = ceph_osdc_start_request(&client->osdc, req, false); + ret = ceph_osdc_start_request(&fsc->client->osdc, req, false); if (!ret) { if (req->r_safe_callback) { /* @@ -701,11 +545,11 @@ more: spin_unlock(&ci->i_unsafe_lock); ceph_get_cap_refs(ci, CEPH_CAP_FILE_WR); } - ret = ceph_osdc_wait_request(&client->osdc, req); + ret = ceph_osdc_wait_request(&fsc->client->osdc, req); } if (file->f_flags & O_DIRECT) - put_page_vector(pages, num_pages); + ceph_put_page_vector(pages, num_pages); else if (file->f_flags & O_SYNC) ceph_release_page_vector(pages, num_pages); @@ -814,7 +658,8 @@ static ssize_t ceph_aio_write(struct kiocb *iocb, const struct iovec *iov, struct ceph_file_info *fi = file->private_data; struct inode *inode = file->f_dentry->d_inode; struct ceph_inode_info *ci = ceph_inode(inode); - struct ceph_osd_client *osdc = &ceph_sb_to_client(inode->i_sb)->osdc; + struct ceph_osd_client *osdc = + &ceph_sb_to_client(inode->i_sb)->client->osdc; loff_t endoff = pos + iov->iov_len; int want, got = 0; int ret, err; diff --git a/fs/ceph/inode.c b/fs/ceph/inode.c index 62377ec37edf..1d6a45b5a04c 100644 --- a/fs/ceph/inode.c +++ b/fs/ceph/inode.c @@ -1,4 +1,4 @@ -#include "ceph_debug.h" +#include <linux/ceph/ceph_debug.h> #include <linux/module.h> #include <linux/fs.h> @@ -13,7 +13,8 @@ #include <linux/pagevec.h> #include "super.h" -#include "decode.h" +#include "mds_client.h" +#include <linux/ceph/decode.h> /* * Ceph inode operations @@ -384,7 +385,7 @@ void ceph_destroy_inode(struct inode *inode) */ if (ci->i_snap_realm) { struct ceph_mds_client *mdsc = - &ceph_sb_to_client(ci->vfs_inode.i_sb)->mdsc; + ceph_sb_to_client(ci->vfs_inode.i_sb)->mdsc; struct ceph_snap_realm *realm = ci->i_snap_realm; dout(" dropping residual ref to snap realm %p\n", realm); @@ -685,7 +686,7 @@ static int fill_inode(struct inode *inode, } /* it may be better to set st_size in getattr instead? */ - if (ceph_test_opt(ceph_sb_to_client(inode->i_sb), RBYTES)) + if (ceph_test_mount_opt(ceph_sb_to_client(inode->i_sb), RBYTES)) inode->i_size = ci->i_rbytes; break; default: @@ -901,7 +902,7 @@ int ceph_fill_trace(struct super_block *sb, struct ceph_mds_request *req, struct inode *in = NULL; struct ceph_mds_reply_inode *ininfo; struct ceph_vino vino; - struct ceph_client *client = ceph_sb_to_client(sb); + struct ceph_fs_client *fsc = ceph_sb_to_client(sb); int i = 0; int err = 0; @@ -965,7 +966,7 @@ int ceph_fill_trace(struct super_block *sb, struct ceph_mds_request *req, */ if (rinfo->head->is_dentry && !req->r_aborted && (rinfo->head->is_target || strncmp(req->r_dentry->d_name.name, - client->mount_args->snapdir_name, + fsc->mount_options->snapdir_name, req->r_dentry->d_name.len))) { /* * lookup link rename : null -> possibly existing inode @@ -1533,7 +1534,7 @@ int ceph_setattr(struct dentry *dentry, struct iattr *attr) struct inode *parent_inode = dentry->d_parent->d_inode; const unsigned int ia_valid = attr->ia_valid; struct ceph_mds_request *req; - struct ceph_mds_client *mdsc = &ceph_sb_to_client(dentry->d_sb)->mdsc; + struct ceph_mds_client *mdsc = ceph_sb_to_client(dentry->d_sb)->mdsc; int issued; int release = 0, dirtied = 0; int mask = 0; @@ -1728,8 +1729,8 @@ out: */ int ceph_do_getattr(struct inode *inode, int mask) { - struct ceph_client *client = ceph_sb_to_client(inode->i_sb); - struct ceph_mds_client *mdsc = &client->mdsc; + struct ceph_fs_client *fsc = ceph_sb_to_client(inode->i_sb); + struct ceph_mds_client *mdsc = fsc->mdsc; struct ceph_mds_request *req; int err; diff --git a/fs/ceph/ioctl.c b/fs/ceph/ioctl.c index 76e307d2aba1..8888c9ba68db 100644 --- a/fs/ceph/ioctl.c +++ b/fs/ceph/ioctl.c @@ -1,8 +1,10 @@ #include <linux/in.h> -#include "ioctl.h" #include "super.h" -#include "ceph_debug.h" +#include "mds_client.h" +#include <linux/ceph/ceph_debug.h> + +#include "ioctl.h" /* @@ -37,7 +39,7 @@ static long ceph_ioctl_set_layout(struct file *file, void __user *arg) { struct inode *inode = file->f_dentry->d_inode; struct inode *parent_inode = file->f_dentry->d_parent->d_inode; - struct ceph_mds_client *mdsc = &ceph_sb_to_client(inode->i_sb)->mdsc; + struct ceph_mds_client *mdsc = ceph_sb_to_client(inode->i_sb)->mdsc; struct ceph_mds_request *req; struct ceph_ioctl_layout l; int err, i; @@ -90,6 +92,68 @@ static long ceph_ioctl_set_layout(struct file *file, void __user *arg) } /* + * Set a layout policy on a directory inode. All items in the tree + * rooted at this inode will inherit this layout on creation, + * (It doesn't apply retroactively ) + * unless a subdirectory has its own layout policy. + */ +static long ceph_ioctl_set_layout_policy (struct file *file, void __user *arg) +{ + struct inode *inode = file->f_dentry->d_inode; + struct ceph_mds_request *req; + struct ceph_ioctl_layout l; + int err, i; + struct ceph_mds_client *mdsc = ceph_sb_to_client(inode->i_sb)->mdsc; + + /* copy and validate */ + if (copy_from_user(&l, arg, sizeof(l))) + return -EFAULT; + + if ((l.object_size & ~PAGE_MASK) || + (l.stripe_unit & ~PAGE_MASK) || + !l.stripe_unit || + (l.object_size && + (unsigned)l.object_size % (unsigned)l.stripe_unit)) + return -EINVAL; + + /* make sure it's a valid data pool */ + if (l.data_pool > 0) { + mutex_lock(&mdsc->mutex); + err = -EINVAL; + for (i = 0; i < mdsc->mdsmap->m_num_data_pg_pools; i++) + if (mdsc->mdsmap->m_data_pg_pools[i] == l.data_pool) { + err = 0; + break; + } + mutex_unlock(&mdsc->mutex); + if (err) + return err; + } + + req = ceph_mdsc_create_request(mdsc, CEPH_MDS_OP_SETDIRLAYOUT, + USE_AUTH_MDS); + + if (IS_ERR(req)) + return PTR_ERR(req); + req->r_inode = igrab(inode); + + req->r_args.setlayout.layout.fl_stripe_unit = + cpu_to_le32(l.stripe_unit); + req->r_args.setlayout.layout.fl_stripe_count = + cpu_to_le32(l.stripe_count); + req->r_args.setlayout.layout.fl_object_size = + cpu_to_le32(l.object_size); + req->r_args.setlayout.layout.fl_pg_pool = + cpu_to_le32(l.data_pool); + req->r_args.setlayout.layout.fl_pg_preferred = + cpu_to_le32(l.preferred_osd); + + err = ceph_mdsc_do_request(mdsc, inode, req); + ceph_mdsc_put_request(req); + return err; +} + +/* * Return object name, size/offset information, and location (OSD * number, network address) for a given file offset. */ @@ -98,7 +162,8 @@ static long ceph_ioctl_get_dataloc(struct file *file, void __user *arg) struct ceph_ioctl_dataloc dl; struct inode *inode = file->f_dentry->d_inode; struct ceph_inode_info *ci = ceph_inode(inode); - struct ceph_osd_client *osdc = &ceph_sb_to_client(inode->i_sb)->osdc; + struct ceph_osd_client *osdc = + &ceph_sb_to_client(inode->i_sb)->client->osdc; u64 len = 1, olen; u64 tmp; struct ceph_object_layout ol; @@ -174,11 +239,15 @@ long ceph_ioctl(struct file *file, unsigned int cmd, unsigned long arg) case CEPH_IOC_SET_LAYOUT: return ceph_ioctl_set_layout(file, (void __user *)arg); + case CEPH_IOC_SET_LAYOUT_POLICY: + return ceph_ioctl_set_layout_policy(file, (void __user *)arg); + case CEPH_IOC_GET_DATALOC: return ceph_ioctl_get_dataloc(file, (void __user *)arg); case CEPH_IOC_LAZYIO: return ceph_ioctl_lazyio(file); } + return -ENOTTY; } diff --git a/fs/ceph/ioctl.h b/fs/ceph/ioctl.h index 88451a3b6857..a6ce54e94eb5 100644 --- a/fs/ceph/ioctl.h +++ b/fs/ceph/ioctl.h @@ -4,7 +4,7 @@ #include <linux/ioctl.h> #include <linux/types.h> -#define CEPH_IOCTL_MAGIC 0x97 +#define CEPH_IOCTL_MAGIC 0x98 /* just use u64 to align sanely on all archs */ struct ceph_ioctl_layout { @@ -17,6 +17,8 @@ struct ceph_ioctl_layout { struct ceph_ioctl_layout) #define CEPH_IOC_SET_LAYOUT _IOW(CEPH_IOCTL_MAGIC, 2, \ struct ceph_ioctl_layout) +#define CEPH_IOC_SET_LAYOUT_POLICY _IOW(CEPH_IOCTL_MAGIC, 5, \ + struct ceph_ioctl_layout) /* * Extract identity, address of the OSD and object storing a given diff --git a/fs/ceph/locks.c b/fs/ceph/locks.c index ff4e753aae92..40abde93c345 100644 --- a/fs/ceph/locks.c +++ b/fs/ceph/locks.c @@ -1,11 +1,11 @@ -#include "ceph_debug.h" +#include <linux/ceph/ceph_debug.h> #include <linux/file.h> #include <linux/namei.h> #include "super.h" #include "mds_client.h" -#include "pagelist.h" +#include <linux/ceph/pagelist.h> /** * Implement fcntl and flock locking functions. @@ -16,7 +16,7 @@ static int ceph_lock_message(u8 lock_type, u16 operation, struct file *file, { struct inode *inode = file->f_dentry->d_inode; struct ceph_mds_client *mdsc = - &ceph_sb_to_client(inode->i_sb)->mdsc; + ceph_sb_to_client(inode->i_sb)->mdsc; struct ceph_mds_request *req; int err; @@ -181,8 +181,9 @@ void ceph_count_locks(struct inode *inode, int *fcntl_count, int *flock_count) * Encode the flock and fcntl locks for the given inode into the pagelist. * Format is: #fcntl locks, sequential fcntl locks, #flock locks, * sequential flock locks. - * Must be called with BLK already held, and the lock numbers should have - * been gathered under the same lock holding window. + * Must be called with lock_flocks() already held. + * If we encounter more of a specific lock type than expected, + * we return the value 1. */ int ceph_encode_locks(struct inode *inode, struct ceph_pagelist *pagelist, int num_fcntl_locks, int num_flock_locks) @@ -190,6 +191,8 @@ int ceph_encode_locks(struct inode *inode, struct ceph_pagelist *pagelist, struct file_lock *lock; struct ceph_filelock cephlock; int err = 0; + int seen_fcntl = 0; + int seen_flock = 0; dout("encoding %d flock and %d fcntl locks", num_flock_locks, num_fcntl_locks); @@ -198,6 +201,11 @@ int ceph_encode_locks(struct inode *inode, struct ceph_pagelist *pagelist, goto fail; for (lock = inode->i_flock; lock != NULL; lock = lock->fl_next) { if (lock->fl_flags & FL_POSIX) { + ++seen_fcntl; + if (seen_fcntl > num_fcntl_locks) { + err = -ENOSPC; + goto fail; + } err = lock_to_ceph_filelock(lock, &cephlock); if (err) goto fail; @@ -213,6 +221,11 @@ int ceph_encode_locks(struct inode *inode, struct ceph_pagelist *pagelist, goto fail; for (lock = inode->i_flock; lock != NULL; lock = lock->fl_next) { if (lock->fl_flags & FL_FLOCK) { + ++seen_flock; + if (seen_flock > num_flock_locks) { + err = -ENOSPC; + goto fail; + } err = lock_to_ceph_filelock(lock, &cephlock); if (err) goto fail; diff --git a/fs/ceph/mds_client.c b/fs/ceph/mds_client.c index fad95f8f2608..3142b15940c2 100644 --- a/fs/ceph/mds_client.c +++ b/fs/ceph/mds_client.c @@ -1,17 +1,21 @@ -#include "ceph_debug.h" +#include <linux/ceph/ceph_debug.h> +#include <linux/fs.h> #include <linux/wait.h> #include <linux/slab.h> #include <linux/sched.h> +#include <linux/debugfs.h> +#include <linux/seq_file.h> #include <linux/smp_lock.h> -#include "mds_client.h" -#include "mon_client.h" #include "super.h" -#include "messenger.h" -#include "decode.h" -#include "auth.h" -#include "pagelist.h" +#include "mds_client.h" + +#include <linux/ceph/messenger.h> +#include <linux/ceph/decode.h> +#include <linux/ceph/pagelist.h> +#include <linux/ceph/auth.h> +#include <linux/ceph/debugfs.h> /* * A cluster of MDS (metadata server) daemons is responsible for @@ -286,8 +290,9 @@ void ceph_put_mds_session(struct ceph_mds_session *s) atomic_read(&s->s_ref), atomic_read(&s->s_ref)-1); if (atomic_dec_and_test(&s->s_ref)) { if (s->s_authorizer) - s->s_mdsc->client->monc.auth->ops->destroy_authorizer( - s->s_mdsc->client->monc.auth, s->s_authorizer); + s->s_mdsc->fsc->client->monc.auth->ops->destroy_authorizer( + s->s_mdsc->fsc->client->monc.auth, + s->s_authorizer); kfree(s); } } @@ -344,7 +349,7 @@ static struct ceph_mds_session *register_session(struct ceph_mds_client *mdsc, s->s_seq = 0; mutex_init(&s->s_mutex); - ceph_con_init(mdsc->client->msgr, &s->s_con); + ceph_con_init(mdsc->fsc->client->msgr, &s->s_con); s->s_con.private = s; s->s_con.ops = &mds_con_ops; s->s_con.peer_name.type = CEPH_ENTITY_TYPE_MDS; @@ -599,7 +604,7 @@ static int __choose_mds(struct ceph_mds_client *mdsc, } else if (req->r_dentry) { struct inode *dir = req->r_dentry->d_parent->d_inode; - if (dir->i_sb != mdsc->client->sb) { + if (dir->i_sb != mdsc->fsc->sb) { /* not this fs! */ inode = req->r_dentry->d_inode; } else if (ceph_snap(dir) != CEPH_NOSNAP) { @@ -884,7 +889,7 @@ static int remove_session_caps_cb(struct inode *inode, struct ceph_cap *cap, __ceph_remove_cap(cap); if (!__ceph_is_any_real_caps(ci)) { struct ceph_mds_client *mdsc = - &ceph_sb_to_client(inode->i_sb)->mdsc; + ceph_sb_to_client(inode->i_sb)->mdsc; spin_lock(&mdsc->cap_dirty_lock); if (!list_empty(&ci->i_dirty_item)) { @@ -1146,7 +1151,7 @@ int ceph_add_cap_releases(struct ceph_mds_client *mdsc, struct ceph_msg *msg, *partial = NULL; struct ceph_mds_cap_release *head; int err = -ENOMEM; - int extra = mdsc->client->mount_args->cap_release_safety; + int extra = mdsc->fsc->mount_options->cap_release_safety; int num; dout("add_cap_releases %p mds%d extra %d\n", session, session->s_mds, @@ -2085,7 +2090,7 @@ static void handle_reply(struct ceph_mds_session *session, struct ceph_msg *msg) /* insert trace into our cache */ mutex_lock(&req->r_fill_mutex); - err = ceph_fill_trace(mdsc->client->sb, req, req->r_session); + err = ceph_fill_trace(mdsc->fsc->sb, req, req->r_session); if (err == 0) { if (result == 0 && rinfo->dir_nr) ceph_readdir_prepopulate(req, req->r_session); @@ -2361,19 +2366,35 @@ static int encode_caps_cb(struct inode *inode, struct ceph_cap *cap, if (recon_state->flock) { int num_fcntl_locks, num_flock_locks; - - lock_kernel(); - ceph_count_locks(inode, &num_fcntl_locks, &num_flock_locks); - rec.v2.flock_len = (2*sizeof(u32) + - (num_fcntl_locks+num_flock_locks) * - sizeof(struct ceph_filelock)); - - err = ceph_pagelist_append(pagelist, &rec, reclen); - if (!err) - err = ceph_encode_locks(inode, pagelist, - num_fcntl_locks, - num_flock_locks); - unlock_kernel(); + struct ceph_pagelist_cursor trunc_point; + + ceph_pagelist_set_cursor(pagelist, &trunc_point); + do { + lock_flocks(); + ceph_count_locks(inode, &num_fcntl_locks, + &num_flock_locks); + rec.v2.flock_len = (2*sizeof(u32) + + (num_fcntl_locks+num_flock_locks) * + sizeof(struct ceph_filelock)); + unlock_flocks(); + + /* pre-alloc pagelist */ + ceph_pagelist_truncate(pagelist, &trunc_point); + err = ceph_pagelist_append(pagelist, &rec, reclen); + if (!err) + err = ceph_pagelist_reserve(pagelist, + rec.v2.flock_len); + + /* encode locks */ + if (!err) { + lock_flocks(); + err = ceph_encode_locks(inode, + pagelist, + num_fcntl_locks, + num_flock_locks); + unlock_flocks(); + } + } while (err == -ENOSPC); } else { err = ceph_pagelist_append(pagelist, &rec, reclen); } @@ -2613,7 +2634,7 @@ static void handle_lease(struct ceph_mds_client *mdsc, struct ceph_mds_session *session, struct ceph_msg *msg) { - struct super_block *sb = mdsc->client->sb; + struct super_block *sb = mdsc->fsc->sb; struct inode *inode; struct ceph_inode_info *ci; struct dentry *parent, *dentry; @@ -2891,10 +2912,16 @@ static void delayed_work(struct work_struct *work) schedule_delayed(mdsc); } +int ceph_mdsc_init(struct ceph_fs_client *fsc) -int ceph_mdsc_init(struct ceph_mds_client *mdsc, struct ceph_client *client) { - mdsc->client = client; + struct ceph_mds_client *mdsc; + + mdsc = kzalloc(sizeof(struct ceph_mds_client), GFP_NOFS); + if (!mdsc) + return -ENOMEM; + mdsc->fsc = fsc; + fsc->mdsc = mdsc; mutex_init(&mdsc->mutex); mdsc->mdsmap = kzalloc(sizeof(*mdsc->mdsmap), GFP_NOFS); if (mdsc->mdsmap == NULL) @@ -2927,7 +2954,7 @@ int ceph_mdsc_init(struct ceph_mds_client *mdsc, struct ceph_client *client) INIT_LIST_HEAD(&mdsc->dentry_lru); ceph_caps_init(mdsc); - ceph_adjust_min_caps(mdsc, client->min_caps); + ceph_adjust_min_caps(mdsc, fsc->min_caps); return 0; } @@ -2939,7 +2966,7 @@ int ceph_mdsc_init(struct ceph_mds_client *mdsc, struct ceph_client *client) static void wait_requests(struct ceph_mds_client *mdsc) { struct ceph_mds_request *req; - struct ceph_client *client = mdsc->client; + struct ceph_fs_client *fsc = mdsc->fsc; mutex_lock(&mdsc->mutex); if (__get_oldest_req(mdsc)) { @@ -2947,7 +2974,7 @@ static void wait_requests(struct ceph_mds_client *mdsc) dout("wait_requests waiting for requests\n"); wait_for_completion_timeout(&mdsc->safe_umount_waiters, - client->mount_args->mount_timeout * HZ); + fsc->client->options->mount_timeout * HZ); /* tear down remaining requests */ mutex_lock(&mdsc->mutex); @@ -3030,7 +3057,7 @@ void ceph_mdsc_sync(struct ceph_mds_client *mdsc) { u64 want_tid, want_flush; - if (mdsc->client->mount_state == CEPH_MOUNT_SHUTDOWN) + if (mdsc->fsc->mount_state == CEPH_MOUNT_SHUTDOWN) return; dout("sync\n"); @@ -3053,7 +3080,7 @@ bool done_closing_sessions(struct ceph_mds_client *mdsc) { int i, n = 0; - if (mdsc->client->mount_state == CEPH_MOUNT_SHUTDOWN) + if (mdsc->fsc->mount_state == CEPH_MOUNT_SHUTDOWN) return true; mutex_lock(&mdsc->mutex); @@ -3071,8 +3098,8 @@ void ceph_mdsc_close_sessions(struct ceph_mds_client *mdsc) { struct ceph_mds_session *session; int i; - struct ceph_client *client = mdsc->client; - unsigned long timeout = client->mount_args->mount_timeout * HZ; + struct ceph_fs_client *fsc = mdsc->fsc; + unsigned long timeout = fsc->client->options->mount_timeout * HZ; dout("close_sessions\n"); @@ -3119,7 +3146,7 @@ void ceph_mdsc_close_sessions(struct ceph_mds_client *mdsc) dout("stopped\n"); } -void ceph_mdsc_stop(struct ceph_mds_client *mdsc) +static void ceph_mdsc_stop(struct ceph_mds_client *mdsc) { dout("stop\n"); cancel_delayed_work_sync(&mdsc->delayed_work); /* cancel timer */ @@ -3129,6 +3156,15 @@ void ceph_mdsc_stop(struct ceph_mds_client *mdsc) ceph_caps_finalize(mdsc); } +void ceph_mdsc_destroy(struct ceph_fs_client *fsc) +{ + struct ceph_mds_client *mdsc = fsc->mdsc; + + ceph_mdsc_stop(mdsc); + fsc->mdsc = NULL; + kfree(mdsc); +} + /* * handle mds map update. @@ -3145,14 +3181,14 @@ void ceph_mdsc_handle_map(struct ceph_mds_client *mdsc, struct ceph_msg *msg) ceph_decode_need(&p, end, sizeof(fsid)+2*sizeof(u32), bad); ceph_decode_copy(&p, &fsid, sizeof(fsid)); - if (ceph_check_fsid(mdsc->client, &fsid) < 0) + if (ceph_check_fsid(mdsc->fsc->client, &fsid) < 0) return; epoch = ceph_decode_32(&p); maplen = ceph_decode_32(&p); dout("handle_map epoch %u len %d\n", epoch, (int)maplen); /* do we need it? */ - ceph_monc_got_mdsmap(&mdsc->client->monc, epoch); + ceph_monc_got_mdsmap(&mdsc->fsc->client->monc, epoch); mutex_lock(&mdsc->mutex); if (mdsc->mdsmap && epoch <= mdsc->mdsmap->m_epoch) { dout("handle_map epoch %u <= our %u\n", @@ -3176,7 +3212,7 @@ void ceph_mdsc_handle_map(struct ceph_mds_client *mdsc, struct ceph_msg *msg) } else { mdsc->mdsmap = newmap; /* first mds map */ } - mdsc->client->sb->s_maxbytes = mdsc->mdsmap->m_max_file_size; + mdsc->fsc->sb->s_maxbytes = mdsc->mdsmap->m_max_file_size; __wake_requests(mdsc, &mdsc->waiting_for_map); @@ -3277,7 +3313,7 @@ static int get_authorizer(struct ceph_connection *con, { struct ceph_mds_session *s = con->private; struct ceph_mds_client *mdsc = s->s_mdsc; - struct ceph_auth_client *ac = mdsc->client->monc.auth; + struct ceph_auth_client *ac = mdsc->fsc->client->monc.auth; int ret = 0; if (force_new && s->s_authorizer) { @@ -3311,7 +3347,7 @@ static int verify_authorizer_reply(struct ceph_connection *con, int len) { struct ceph_mds_session *s = con->private; struct ceph_mds_client *mdsc = s->s_mdsc; - struct ceph_auth_client *ac = mdsc->client->monc.auth; + struct ceph_auth_client *ac = mdsc->fsc->client->monc.auth; return ac->ops->verify_authorizer_reply(ac, s->s_authorizer, len); } @@ -3320,12 +3356,12 @@ static int invalidate_authorizer(struct ceph_connection *con) { struct ceph_mds_session *s = con->private; struct ceph_mds_client *mdsc = s->s_mdsc; - struct ceph_auth_client *ac = mdsc->client->monc.auth; + struct ceph_auth_client *ac = mdsc->fsc->client->monc.auth; if (ac->ops->invalidate_authorizer) ac->ops->invalidate_authorizer(ac, CEPH_ENTITY_TYPE_MDS); - return ceph_monc_validate_auth(&mdsc->client->monc); + return ceph_monc_validate_auth(&mdsc->fsc->client->monc); } static const struct ceph_connection_operations mds_con_ops = { @@ -3338,7 +3374,4 @@ static const struct ceph_connection_operations mds_con_ops = { .peer_reset = peer_reset, }; - - - /* eof */ diff --git a/fs/ceph/mds_client.h b/fs/ceph/mds_client.h index c98267ce6d2a..d66d63c72355 100644 --- a/fs/ceph/mds_client.h +++ b/fs/ceph/mds_client.h @@ -8,9 +8,9 @@ #include <linux/rbtree.h> #include <linux/spinlock.h> -#include "types.h" -#include "messenger.h" -#include "mdsmap.h" +#include <linux/ceph/types.h> +#include <linux/ceph/messenger.h> +#include <linux/ceph/mdsmap.h> /* * Some lock dependencies: @@ -26,7 +26,7 @@ * */ -struct ceph_client; +struct ceph_fs_client; struct ceph_cap; /* @@ -230,7 +230,7 @@ struct ceph_mds_request { * mds client state */ struct ceph_mds_client { - struct ceph_client *client; + struct ceph_fs_client *fsc; struct mutex mutex; /* all nested structures */ struct ceph_mdsmap *mdsmap; @@ -289,11 +289,6 @@ struct ceph_mds_client { int caps_avail_count; /* unused, unreserved */ int caps_min_count; /* keep at least this many (unreserved) */ - -#ifdef CONFIG_DEBUG_FS - struct dentry *debugfs_file; -#endif - spinlock_t dentry_lru_lock; struct list_head dentry_lru; int num_dentry; @@ -316,10 +311,9 @@ extern void ceph_put_mds_session(struct ceph_mds_session *s); extern int ceph_send_msg_mds(struct ceph_mds_client *mdsc, struct ceph_msg *msg, int mds); -extern int ceph_mdsc_init(struct ceph_mds_client *mdsc, - struct ceph_client *client); +extern int ceph_mdsc_init(struct ceph_fs_client *fsc); extern void ceph_mdsc_close_sessions(struct ceph_mds_client *mdsc); -extern void ceph_mdsc_stop(struct ceph_mds_client *mdsc); +extern void ceph_mdsc_destroy(struct ceph_fs_client *fsc); extern void ceph_mdsc_sync(struct ceph_mds_client *mdsc); diff --git a/fs/ceph/mdsmap.c b/fs/ceph/mdsmap.c index 040be6d1150b..73b7d44e8a35 100644 --- a/fs/ceph/mdsmap.c +++ b/fs/ceph/mdsmap.c @@ -1,4 +1,4 @@ -#include "ceph_debug.h" +#include <linux/ceph/ceph_debug.h> #include <linux/bug.h> #include <linux/err.h> @@ -6,9 +6,9 @@ #include <linux/slab.h> #include <linux/types.h> -#include "mdsmap.h" -#include "messenger.h" -#include "decode.h" +#include <linux/ceph/mdsmap.h> +#include <linux/ceph/messenger.h> +#include <linux/ceph/decode.h> #include "super.h" @@ -117,7 +117,8 @@ struct ceph_mdsmap *ceph_mdsmap_decode(void **p, void *end) } dout("mdsmap_decode %d/%d %lld mds%d.%d %s %s\n", - i+1, n, global_id, mds, inc, pr_addr(&addr.in_addr), + i+1, n, global_id, mds, inc, + ceph_pr_addr(&addr.in_addr), ceph_mds_state_name(state)); if (mds >= 0 && mds < m->m_max_mds && state > 0) { m->m_info[mds].global_id = global_id; diff --git a/fs/ceph/pagelist.c b/fs/ceph/pagelist.c deleted file mode 100644 index 46a368b6dce5..000000000000 --- a/fs/ceph/pagelist.c +++ /dev/null @@ -1,63 +0,0 @@ - -#include <linux/gfp.h> -#include <linux/pagemap.h> -#include <linux/highmem.h> - -#include "pagelist.h" - -static void ceph_pagelist_unmap_tail(struct ceph_pagelist *pl) -{ - struct page *page = list_entry(pl->head.prev, struct page, - lru); - kunmap(page); -} - -int ceph_pagelist_release(struct ceph_pagelist *pl) -{ - if (pl->mapped_tail) - ceph_pagelist_unmap_tail(pl); - - while (!list_empty(&pl->head)) { - struct page *page = list_first_entry(&pl->head, struct page, - lru); - list_del(&page->lru); - __free_page(page); - } - return 0; -} - -static int ceph_pagelist_addpage(struct ceph_pagelist *pl) -{ - struct page *page = __page_cache_alloc(GFP_NOFS); - if (!page) - return -ENOMEM; - pl->room += PAGE_SIZE; - list_add_tail(&page->lru, &pl->head); - if (pl->mapped_tail) - ceph_pagelist_unmap_tail(pl); - pl->mapped_tail = kmap(page); - return 0; -} - -int ceph_pagelist_append(struct ceph_pagelist *pl, void *buf, size_t len) -{ - while (pl->room < len) { - size_t bit = pl->room; - int ret; - - memcpy(pl->mapped_tail + (pl->length & ~PAGE_CACHE_MASK), - buf, bit); - pl->length += bit; - pl->room -= bit; - buf += bit; - len -= bit; - ret = ceph_pagelist_addpage(pl); - if (ret) - return ret; - } - - memcpy(pl->mapped_tail + (pl->length & ~PAGE_CACHE_MASK), buf, len); - pl->length += len; - pl->room -= len; - return 0; -} diff --git a/fs/ceph/snap.c b/fs/ceph/snap.c index 190b6c4a6f2b..39c243acd062 100644 --- a/fs/ceph/snap.c +++ b/fs/ceph/snap.c @@ -1,10 +1,12 @@ -#include "ceph_debug.h" +#include <linux/ceph/ceph_debug.h> #include <linux/sort.h> #include <linux/slab.h> #include "super.h" -#include "decode.h" +#include "mds_client.h" + +#include <linux/ceph/decode.h> /* * Snapshots in ceph are driven in large part by cooperation from the @@ -526,7 +528,7 @@ int __ceph_finish_cap_snap(struct ceph_inode_info *ci, struct ceph_cap_snap *capsnap) { struct inode *inode = &ci->vfs_inode; - struct ceph_mds_client *mdsc = &ceph_sb_to_client(inode->i_sb)->mdsc; + struct ceph_mds_client *mdsc = ceph_sb_to_client(inode->i_sb)->mdsc; BUG_ON(capsnap->writing); capsnap->size = inode->i_size; @@ -747,7 +749,7 @@ void ceph_handle_snap(struct ceph_mds_client *mdsc, struct ceph_mds_session *session, struct ceph_msg *msg) { - struct super_block *sb = mdsc->client->sb; + struct super_block *sb = mdsc->fsc->sb; int mds = session->s_mds; u64 split; int op; diff --git a/fs/ceph/ceph_strings.c b/fs/ceph/strings.c index c6179d3a26a2..cd5097d7c804 100644 --- a/fs/ceph/ceph_strings.c +++ b/fs/ceph/strings.c @@ -1,71 +1,9 @@ /* - * Ceph string constants + * Ceph fs string constants */ -#include "types.h" +#include <linux/module.h> +#include <linux/ceph/types.h> -const char *ceph_entity_type_name(int type) -{ - switch (type) { - case CEPH_ENTITY_TYPE_MDS: return "mds"; - case CEPH_ENTITY_TYPE_OSD: return "osd"; - case CEPH_ENTITY_TYPE_MON: return "mon"; - case CEPH_ENTITY_TYPE_CLIENT: return "client"; - case CEPH_ENTITY_TYPE_AUTH: return "auth"; - default: return "unknown"; - } -} - -const char *ceph_osd_op_name(int op) -{ - switch (op) { - case CEPH_OSD_OP_READ: return "read"; - case CEPH_OSD_OP_STAT: return "stat"; - - case CEPH_OSD_OP_MASKTRUNC: return "masktrunc"; - - case CEPH_OSD_OP_WRITE: return "write"; - case CEPH_OSD_OP_DELETE: return "delete"; - case CEPH_OSD_OP_TRUNCATE: return "truncate"; - case CEPH_OSD_OP_ZERO: return "zero"; - case CEPH_OSD_OP_WRITEFULL: return "writefull"; - case CEPH_OSD_OP_ROLLBACK: return "rollback"; - - case CEPH_OSD_OP_APPEND: return "append"; - case CEPH_OSD_OP_STARTSYNC: return "startsync"; - case CEPH_OSD_OP_SETTRUNC: return "settrunc"; - case CEPH_OSD_OP_TRIMTRUNC: return "trimtrunc"; - - case CEPH_OSD_OP_TMAPUP: return "tmapup"; - case CEPH_OSD_OP_TMAPGET: return "tmapget"; - case CEPH_OSD_OP_TMAPPUT: return "tmapput"; - - case CEPH_OSD_OP_GETXATTR: return "getxattr"; - case CEPH_OSD_OP_GETXATTRS: return "getxattrs"; - case CEPH_OSD_OP_SETXATTR: return "setxattr"; - case CEPH_OSD_OP_SETXATTRS: return "setxattrs"; - case CEPH_OSD_OP_RESETXATTRS: return "resetxattrs"; - case CEPH_OSD_OP_RMXATTR: return "rmxattr"; - case CEPH_OSD_OP_CMPXATTR: return "cmpxattr"; - - case CEPH_OSD_OP_PULL: return "pull"; - case CEPH_OSD_OP_PUSH: return "push"; - case CEPH_OSD_OP_BALANCEREADS: return "balance-reads"; - case CEPH_OSD_OP_UNBALANCEREADS: return "unbalance-reads"; - case CEPH_OSD_OP_SCRUB: return "scrub"; - - case CEPH_OSD_OP_WRLOCK: return "wrlock"; - case CEPH_OSD_OP_WRUNLOCK: return "wrunlock"; - case CEPH_OSD_OP_RDLOCK: return "rdlock"; - case CEPH_OSD_OP_RDUNLOCK: return "rdunlock"; - case CEPH_OSD_OP_UPLOCK: return "uplock"; - case CEPH_OSD_OP_DNLOCK: return "dnlock"; - - case CEPH_OSD_OP_CALL: return "call"; - - case CEPH_OSD_OP_PGLS: return "pgls"; - } - return "???"; -} const char *ceph_mds_state_name(int s) { @@ -177,17 +115,3 @@ const char *ceph_snap_op_name(int o) } return "???"; } - -const char *ceph_pool_op_name(int op) -{ - switch (op) { - case POOL_OP_CREATE: return "create"; - case POOL_OP_DELETE: return "delete"; - case POOL_OP_AUID_CHANGE: return "auid change"; - case POOL_OP_CREATE_SNAP: return "create snap"; - case POOL_OP_DELETE_SNAP: return "delete snap"; - case POOL_OP_CREATE_UNMANAGED_SNAP: return "create unmanaged snap"; - case POOL_OP_DELETE_UNMANAGED_SNAP: return "delete unmanaged snap"; - } - return "???"; -} diff --git a/fs/ceph/super.c b/fs/ceph/super.c index 9922628532b2..d6e0e0421891 100644 --- a/fs/ceph/super.c +++ b/fs/ceph/super.c @@ -1,5 +1,5 @@ -#include "ceph_debug.h" +#include <linux/ceph/ceph_debug.h> #include <linux/backing-dev.h> #include <linux/ctype.h> @@ -15,10 +15,13 @@ #include <linux/statfs.h> #include <linux/string.h> -#include "decode.h" #include "super.h" -#include "mon_client.h" -#include "auth.h" +#include "mds_client.h" + +#include <linux/ceph/decode.h> +#include <linux/ceph/mon_client.h> +#include <linux/ceph/auth.h> +#include <linux/ceph/debugfs.h> /* * Ceph superblock operations @@ -26,36 +29,22 @@ * Handle the basics of mounting, unmounting. */ - -/* - * find filename portion of a path (/foo/bar/baz -> baz) - */ -const char *ceph_file_part(const char *s, int len) -{ - const char *e = s + len; - - while (e != s && *(e-1) != '/') - e--; - return e; -} - - /* * super ops */ static void ceph_put_super(struct super_block *s) { - struct ceph_client *client = ceph_sb_to_client(s); + struct ceph_fs_client *fsc = ceph_sb_to_client(s); dout("put_super\n"); - ceph_mdsc_close_sessions(&client->mdsc); + ceph_mdsc_close_sessions(fsc->mdsc); /* * ensure we release the bdi before put_anon_super releases * the device name. */ - if (s->s_bdi == &client->backing_dev_info) { - bdi_unregister(&client->backing_dev_info); + if (s->s_bdi == &fsc->backing_dev_info) { + bdi_unregister(&fsc->backing_dev_info); s->s_bdi = NULL; } @@ -64,14 +53,14 @@ static void ceph_put_super(struct super_block *s) static int ceph_statfs(struct dentry *dentry, struct kstatfs *buf) { - struct ceph_client *client = ceph_inode_to_client(dentry->d_inode); - struct ceph_monmap *monmap = client->monc.monmap; + struct ceph_fs_client *fsc = ceph_inode_to_client(dentry->d_inode); + struct ceph_monmap *monmap = fsc->client->monc.monmap; struct ceph_statfs st; u64 fsid; int err; dout("statfs\n"); - err = ceph_monc_do_statfs(&client->monc, &st); + err = ceph_monc_do_statfs(&fsc->client->monc, &st); if (err < 0) return err; @@ -104,238 +93,28 @@ static int ceph_statfs(struct dentry *dentry, struct kstatfs *buf) static int ceph_sync_fs(struct super_block *sb, int wait) { - struct ceph_client *client = ceph_sb_to_client(sb); + struct ceph_fs_client *fsc = ceph_sb_to_client(sb); if (!wait) { dout("sync_fs (non-blocking)\n"); - ceph_flush_dirty_caps(&client->mdsc); + ceph_flush_dirty_caps(fsc->mdsc); dout("sync_fs (non-blocking) done\n"); return 0; } dout("sync_fs (blocking)\n"); - ceph_osdc_sync(&ceph_sb_to_client(sb)->osdc); - ceph_mdsc_sync(&ceph_sb_to_client(sb)->mdsc); + ceph_osdc_sync(&fsc->client->osdc); + ceph_mdsc_sync(fsc->mdsc); dout("sync_fs (blocking) done\n"); return 0; } -static int default_congestion_kb(void) -{ - int congestion_kb; - - /* - * Copied from NFS - * - * congestion size, scale with available memory. - * - * 64MB: 8192k - * 128MB: 11585k - * 256MB: 16384k - * 512MB: 23170k - * 1GB: 32768k - * 2GB: 46340k - * 4GB: 65536k - * 8GB: 92681k - * 16GB: 131072k - * - * This allows larger machines to have larger/more transfers. - * Limit the default to 256M - */ - congestion_kb = (16*int_sqrt(totalram_pages)) << (PAGE_SHIFT-10); - if (congestion_kb > 256*1024) - congestion_kb = 256*1024; - - return congestion_kb; -} - -/** - * ceph_show_options - Show mount options in /proc/mounts - * @m: seq_file to write to - * @mnt: mount descriptor - */ -static int ceph_show_options(struct seq_file *m, struct vfsmount *mnt) -{ - struct ceph_client *client = ceph_sb_to_client(mnt->mnt_sb); - struct ceph_mount_args *args = client->mount_args; - - if (args->flags & CEPH_OPT_FSID) - seq_printf(m, ",fsid=%pU", &args->fsid); - if (args->flags & CEPH_OPT_NOSHARE) - seq_puts(m, ",noshare"); - if (args->flags & CEPH_OPT_DIRSTAT) - seq_puts(m, ",dirstat"); - if ((args->flags & CEPH_OPT_RBYTES) == 0) - seq_puts(m, ",norbytes"); - if (args->flags & CEPH_OPT_NOCRC) - seq_puts(m, ",nocrc"); - if (args->flags & CEPH_OPT_NOASYNCREADDIR) - seq_puts(m, ",noasyncreaddir"); - - if (args->mount_timeout != CEPH_MOUNT_TIMEOUT_DEFAULT) - seq_printf(m, ",mount_timeout=%d", args->mount_timeout); - if (args->osd_idle_ttl != CEPH_OSD_IDLE_TTL_DEFAULT) - seq_printf(m, ",osd_idle_ttl=%d", args->osd_idle_ttl); - if (args->osd_timeout != CEPH_OSD_TIMEOUT_DEFAULT) - seq_printf(m, ",osdtimeout=%d", args->osd_timeout); - if (args->osd_keepalive_timeout != CEPH_OSD_KEEPALIVE_DEFAULT) - seq_printf(m, ",osdkeepalivetimeout=%d", - args->osd_keepalive_timeout); - if (args->wsize) - seq_printf(m, ",wsize=%d", args->wsize); - if (args->rsize != CEPH_MOUNT_RSIZE_DEFAULT) - seq_printf(m, ",rsize=%d", args->rsize); - if (args->congestion_kb != default_congestion_kb()) - seq_printf(m, ",write_congestion_kb=%d", args->congestion_kb); - if (args->caps_wanted_delay_min != CEPH_CAPS_WANTED_DELAY_MIN_DEFAULT) - seq_printf(m, ",caps_wanted_delay_min=%d", - args->caps_wanted_delay_min); - if (args->caps_wanted_delay_max != CEPH_CAPS_WANTED_DELAY_MAX_DEFAULT) - seq_printf(m, ",caps_wanted_delay_max=%d", - args->caps_wanted_delay_max); - if (args->cap_release_safety != CEPH_CAP_RELEASE_SAFETY_DEFAULT) - seq_printf(m, ",cap_release_safety=%d", - args->cap_release_safety); - if (args->max_readdir != CEPH_MAX_READDIR_DEFAULT) - seq_printf(m, ",readdir_max_entries=%d", args->max_readdir); - if (args->max_readdir_bytes != CEPH_MAX_READDIR_BYTES_DEFAULT) - seq_printf(m, ",readdir_max_bytes=%d", args->max_readdir_bytes); - if (strcmp(args->snapdir_name, CEPH_SNAPDIRNAME_DEFAULT)) - seq_printf(m, ",snapdirname=%s", args->snapdir_name); - if (args->name) - seq_printf(m, ",name=%s", args->name); - if (args->secret) - seq_puts(m, ",secret=<hidden>"); - return 0; -} - -/* - * caches - */ -struct kmem_cache *ceph_inode_cachep; -struct kmem_cache *ceph_cap_cachep; -struct kmem_cache *ceph_dentry_cachep; -struct kmem_cache *ceph_file_cachep; - -static void ceph_inode_init_once(void *foo) -{ - struct ceph_inode_info *ci = foo; - inode_init_once(&ci->vfs_inode); -} - -static int __init init_caches(void) -{ - ceph_inode_cachep = kmem_cache_create("ceph_inode_info", - sizeof(struct ceph_inode_info), - __alignof__(struct ceph_inode_info), - (SLAB_RECLAIM_ACCOUNT|SLAB_MEM_SPREAD), - ceph_inode_init_once); - if (ceph_inode_cachep == NULL) - return -ENOMEM; - - ceph_cap_cachep = KMEM_CACHE(ceph_cap, - SLAB_RECLAIM_ACCOUNT|SLAB_MEM_SPREAD); - if (ceph_cap_cachep == NULL) - goto bad_cap; - - ceph_dentry_cachep = KMEM_CACHE(ceph_dentry_info, - SLAB_RECLAIM_ACCOUNT|SLAB_MEM_SPREAD); - if (ceph_dentry_cachep == NULL) - goto bad_dentry; - - ceph_file_cachep = KMEM_CACHE(ceph_file_info, - SLAB_RECLAIM_ACCOUNT|SLAB_MEM_SPREAD); - if (ceph_file_cachep == NULL) - goto bad_file; - - return 0; - -bad_file: - kmem_cache_destroy(ceph_dentry_cachep); -bad_dentry: - kmem_cache_destroy(ceph_cap_cachep); -bad_cap: - kmem_cache_destroy(ceph_inode_cachep); - return -ENOMEM; -} - -static void destroy_caches(void) -{ - kmem_cache_destroy(ceph_inode_cachep); - kmem_cache_destroy(ceph_cap_cachep); - kmem_cache_destroy(ceph_dentry_cachep); - kmem_cache_destroy(ceph_file_cachep); -} - - -/* - * ceph_umount_begin - initiate forced umount. Tear down down the - * mount, skipping steps that may hang while waiting for server(s). - */ -static void ceph_umount_begin(struct super_block *sb) -{ - struct ceph_client *client = ceph_sb_to_client(sb); - - dout("ceph_umount_begin - starting forced umount\n"); - if (!client) - return; - client->mount_state = CEPH_MOUNT_SHUTDOWN; - return; -} - -static const struct super_operations ceph_super_ops = { - .alloc_inode = ceph_alloc_inode, - .destroy_inode = ceph_destroy_inode, - .write_inode = ceph_write_inode, - .sync_fs = ceph_sync_fs, - .put_super = ceph_put_super, - .show_options = ceph_show_options, - .statfs = ceph_statfs, - .umount_begin = ceph_umount_begin, -}; - - -const char *ceph_msg_type_name(int type) -{ - switch (type) { - case CEPH_MSG_SHUTDOWN: return "shutdown"; - case CEPH_MSG_PING: return "ping"; - case CEPH_MSG_AUTH: return "auth"; - case CEPH_MSG_AUTH_REPLY: return "auth_reply"; - case CEPH_MSG_MON_MAP: return "mon_map"; - case CEPH_MSG_MON_GET_MAP: return "mon_get_map"; - case CEPH_MSG_MON_SUBSCRIBE: return "mon_subscribe"; - case CEPH_MSG_MON_SUBSCRIBE_ACK: return "mon_subscribe_ack"; - case CEPH_MSG_STATFS: return "statfs"; - case CEPH_MSG_STATFS_REPLY: return "statfs_reply"; - case CEPH_MSG_MDS_MAP: return "mds_map"; - case CEPH_MSG_CLIENT_SESSION: return "client_session"; - case CEPH_MSG_CLIENT_RECONNECT: return "client_reconnect"; - case CEPH_MSG_CLIENT_REQUEST: return "client_request"; - case CEPH_MSG_CLIENT_REQUEST_FORWARD: return "client_request_forward"; - case CEPH_MSG_CLIENT_REPLY: return "client_reply"; - case CEPH_MSG_CLIENT_CAPS: return "client_caps"; - case CEPH_MSG_CLIENT_CAPRELEASE: return "client_cap_release"; - case CEPH_MSG_CLIENT_SNAP: return "client_snap"; - case CEPH_MSG_CLIENT_LEASE: return "client_lease"; - case CEPH_MSG_OSD_MAP: return "osd_map"; - case CEPH_MSG_OSD_OP: return "osd_op"; - case CEPH_MSG_OSD_OPREPLY: return "osd_opreply"; - default: return "unknown"; - } -} - - /* * mount options */ enum { Opt_wsize, Opt_rsize, - Opt_osdtimeout, - Opt_osdkeepalivetimeout, - Opt_mount_timeout, - Opt_osd_idle_ttl, Opt_caps_wanted_delay_min, Opt_caps_wanted_delay_max, Opt_cap_release_safety, @@ -344,29 +123,19 @@ enum { Opt_congestion_kb, Opt_last_int, /* int args above */ - Opt_fsid, Opt_snapdirname, - Opt_name, - Opt_secret, Opt_last_string, /* string args above */ - Opt_ip, - Opt_noshare, Opt_dirstat, Opt_nodirstat, Opt_rbytes, Opt_norbytes, - Opt_nocrc, Opt_noasyncreaddir, }; -static match_table_t arg_tokens = { +static match_table_t fsopt_tokens = { {Opt_wsize, "wsize=%d"}, {Opt_rsize, "rsize=%d"}, - {Opt_osdtimeout, "osdtimeout=%d"}, - {Opt_osdkeepalivetimeout, "osdkeepalive=%d"}, - {Opt_mount_timeout, "mount_timeout=%d"}, - {Opt_osd_idle_ttl, "osd_idle_ttl=%d"}, {Opt_caps_wanted_delay_min, "caps_wanted_delay_min=%d"}, {Opt_caps_wanted_delay_max, "caps_wanted_delay_max=%d"}, {Opt_cap_release_safety, "cap_release_safety=%d"}, @@ -374,403 +143,459 @@ static match_table_t arg_tokens = { {Opt_readdir_max_bytes, "readdir_max_bytes=%d"}, {Opt_congestion_kb, "write_congestion_kb=%d"}, /* int args above */ - {Opt_fsid, "fsid=%s"}, {Opt_snapdirname, "snapdirname=%s"}, - {Opt_name, "name=%s"}, - {Opt_secret, "secret=%s"}, /* string args above */ - {Opt_ip, "ip=%s"}, - {Opt_noshare, "noshare"}, {Opt_dirstat, "dirstat"}, {Opt_nodirstat, "nodirstat"}, {Opt_rbytes, "rbytes"}, {Opt_norbytes, "norbytes"}, - {Opt_nocrc, "nocrc"}, {Opt_noasyncreaddir, "noasyncreaddir"}, {-1, NULL} }; -static int parse_fsid(const char *str, struct ceph_fsid *fsid) +static int parse_fsopt_token(char *c, void *private) { - int i = 0; - char tmp[3]; - int err = -EINVAL; - int d; - - dout("parse_fsid '%s'\n", str); - tmp[2] = 0; - while (*str && i < 16) { - if (ispunct(*str)) { - str++; - continue; + struct ceph_mount_options *fsopt = private; + substring_t argstr[MAX_OPT_ARGS]; + int token, intval, ret; + + token = match_token((char *)c, fsopt_tokens, argstr); + if (token < 0) + return -EINVAL; + + if (token < Opt_last_int) { + ret = match_int(&argstr[0], &intval); + if (ret < 0) { + pr_err("bad mount option arg (not int) " + "at '%s'\n", c); + return ret; } - if (!isxdigit(str[0]) || !isxdigit(str[1])) - break; - tmp[0] = str[0]; - tmp[1] = str[1]; - if (sscanf(tmp, "%x", &d) < 1) - break; - fsid->fsid[i] = d & 0xff; - i++; - str += 2; + dout("got int token %d val %d\n", token, intval); + } else if (token > Opt_last_int && token < Opt_last_string) { + dout("got string token %d val %s\n", token, + argstr[0].from); + } else { + dout("got token %d\n", token); } - if (i == 16) - err = 0; - dout("parse_fsid ret %d got fsid %pU", err, fsid); - return err; + switch (token) { + case Opt_snapdirname: + kfree(fsopt->snapdir_name); + fsopt->snapdir_name = kstrndup(argstr[0].from, + argstr[0].to-argstr[0].from, + GFP_KERNEL); + if (!fsopt->snapdir_name) + return -ENOMEM; + break; + + /* misc */ + case Opt_wsize: + fsopt->wsize = intval; + break; + case Opt_rsize: + fsopt->rsize = intval; + break; + case Opt_caps_wanted_delay_min: + fsopt->caps_wanted_delay_min = intval; + break; + case Opt_caps_wanted_delay_max: + fsopt->caps_wanted_delay_max = intval; + break; + case Opt_readdir_max_entries: + fsopt->max_readdir = intval; + break; + case Opt_readdir_max_bytes: + fsopt->max_readdir_bytes = intval; + break; + case Opt_congestion_kb: + fsopt->congestion_kb = intval; + break; + case Opt_dirstat: + fsopt->flags |= CEPH_MOUNT_OPT_DIRSTAT; + break; + case Opt_nodirstat: + fsopt->flags &= ~CEPH_MOUNT_OPT_DIRSTAT; + break; + case Opt_rbytes: + fsopt->flags |= CEPH_MOUNT_OPT_RBYTES; + break; + case Opt_norbytes: + fsopt->flags &= ~CEPH_MOUNT_OPT_RBYTES; + break; + case Opt_noasyncreaddir: + fsopt->flags |= CEPH_MOUNT_OPT_NOASYNCREADDIR; + break; + default: + BUG_ON(token); + } + return 0; } -static struct ceph_mount_args *parse_mount_args(int flags, char *options, - const char *dev_name, - const char **path) +static void destroy_mount_options(struct ceph_mount_options *args) { - struct ceph_mount_args *args; - const char *c; - int err = -ENOMEM; - substring_t argstr[MAX_OPT_ARGS]; + dout("destroy_mount_options %p\n", args); + kfree(args->snapdir_name); + kfree(args); +} - args = kzalloc(sizeof(*args), GFP_KERNEL); - if (!args) - return ERR_PTR(-ENOMEM); - args->mon_addr = kcalloc(CEPH_MAX_MON, sizeof(*args->mon_addr), - GFP_KERNEL); - if (!args->mon_addr) - goto out; +static int strcmp_null(const char *s1, const char *s2) +{ + if (!s1 && !s2) + return 0; + if (s1 && !s2) + return -1; + if (!s1 && s2) + return 1; + return strcmp(s1, s2); +} - dout("parse_mount_args %p, dev_name '%s'\n", args, dev_name); - - /* start with defaults */ - args->sb_flags = flags; - args->flags = CEPH_OPT_DEFAULT; - args->osd_timeout = CEPH_OSD_TIMEOUT_DEFAULT; - args->osd_keepalive_timeout = CEPH_OSD_KEEPALIVE_DEFAULT; - args->mount_timeout = CEPH_MOUNT_TIMEOUT_DEFAULT; /* seconds */ - args->osd_idle_ttl = CEPH_OSD_IDLE_TTL_DEFAULT; /* seconds */ - args->caps_wanted_delay_min = CEPH_CAPS_WANTED_DELAY_MIN_DEFAULT; - args->caps_wanted_delay_max = CEPH_CAPS_WANTED_DELAY_MAX_DEFAULT; - args->rsize = CEPH_MOUNT_RSIZE_DEFAULT; - args->snapdir_name = kstrdup(CEPH_SNAPDIRNAME_DEFAULT, GFP_KERNEL); - args->cap_release_safety = CEPH_CAP_RELEASE_SAFETY_DEFAULT; - args->max_readdir = CEPH_MAX_READDIR_DEFAULT; - args->max_readdir_bytes = CEPH_MAX_READDIR_BYTES_DEFAULT; - args->congestion_kb = default_congestion_kb(); - - /* ip1[:port1][,ip2[:port2]...]:/subdir/in/fs */ - err = -EINVAL; - if (!dev_name) - goto out; - *path = strstr(dev_name, ":/"); - if (*path == NULL) { - pr_err("device name is missing path (no :/ in %s)\n", - dev_name); - goto out; - } +static int compare_mount_options(struct ceph_mount_options *new_fsopt, + struct ceph_options *new_opt, + struct ceph_fs_client *fsc) +{ + struct ceph_mount_options *fsopt1 = new_fsopt; + struct ceph_mount_options *fsopt2 = fsc->mount_options; + int ofs = offsetof(struct ceph_mount_options, snapdir_name); + int ret; - /* get mon ip(s) */ - err = ceph_parse_ips(dev_name, *path, args->mon_addr, - CEPH_MAX_MON, &args->num_mon); - if (err < 0) - goto out; + ret = memcmp(fsopt1, fsopt2, ofs); + if (ret) + return ret; + + ret = strcmp_null(fsopt1->snapdir_name, fsopt2->snapdir_name); + if (ret) + return ret; + + return ceph_compare_options(new_opt, fsc->client); +} + +static int parse_mount_options(struct ceph_mount_options **pfsopt, + struct ceph_options **popt, + int flags, char *options, + const char *dev_name, + const char **path) +{ + struct ceph_mount_options *fsopt; + const char *dev_name_end; + int err = -ENOMEM; + + fsopt = kzalloc(sizeof(*fsopt), GFP_KERNEL); + if (!fsopt) + return -ENOMEM; + + dout("parse_mount_options %p, dev_name '%s'\n", fsopt, dev_name); + + fsopt->sb_flags = flags; + fsopt->flags = CEPH_MOUNT_OPT_DEFAULT; + + fsopt->rsize = CEPH_MOUNT_RSIZE_DEFAULT; + fsopt->snapdir_name = kstrdup(CEPH_SNAPDIRNAME_DEFAULT, GFP_KERNEL); + fsopt->cap_release_safety = CEPH_CAP_RELEASE_SAFETY_DEFAULT; + fsopt->max_readdir = CEPH_MAX_READDIR_DEFAULT; + fsopt->max_readdir_bytes = CEPH_MAX_READDIR_BYTES_DEFAULT; + fsopt->congestion_kb = default_congestion_kb(); + + /* ip1[:port1][,ip2[:port2]...]:/subdir/in/fs */ + err = -EINVAL; + if (!dev_name) + goto out; + *path = strstr(dev_name, ":/"); + if (*path == NULL) { + pr_err("device name is missing path (no :/ in %s)\n", + dev_name); + goto out; + } + dev_name_end = *path; + dout("device name '%.*s'\n", (int)(dev_name_end - dev_name), dev_name); /* path on server */ *path += 2; dout("server path '%s'\n", *path); - /* parse mount options */ - while ((c = strsep(&options, ",")) != NULL) { - int token, intval, ret; - if (!*c) - continue; - err = -EINVAL; - token = match_token((char *)c, arg_tokens, argstr); - if (token < 0) { - pr_err("bad mount option at '%s'\n", c); - goto out; - } - if (token < Opt_last_int) { - ret = match_int(&argstr[0], &intval); - if (ret < 0) { - pr_err("bad mount option arg (not int) " - "at '%s'\n", c); - continue; - } - dout("got int token %d val %d\n", token, intval); - } else if (token > Opt_last_int && token < Opt_last_string) { - dout("got string token %d val %s\n", token, - argstr[0].from); - } else { - dout("got token %d\n", token); - } - switch (token) { - case Opt_ip: - err = ceph_parse_ips(argstr[0].from, - argstr[0].to, - &args->my_addr, - 1, NULL); - if (err < 0) - goto out; - args->flags |= CEPH_OPT_MYIP; - break; - - case Opt_fsid: - err = parse_fsid(argstr[0].from, &args->fsid); - if (err == 0) - args->flags |= CEPH_OPT_FSID; - break; - case Opt_snapdirname: - kfree(args->snapdir_name); - args->snapdir_name = kstrndup(argstr[0].from, - argstr[0].to-argstr[0].from, - GFP_KERNEL); - break; - case Opt_name: - args->name = kstrndup(argstr[0].from, - argstr[0].to-argstr[0].from, - GFP_KERNEL); - break; - case Opt_secret: - args->secret = kstrndup(argstr[0].from, - argstr[0].to-argstr[0].from, - GFP_KERNEL); - break; - - /* misc */ - case Opt_wsize: - args->wsize = intval; - break; - case Opt_rsize: - args->rsize = intval; - break; - case Opt_osdtimeout: - args->osd_timeout = intval; - break; - case Opt_osdkeepalivetimeout: - args->osd_keepalive_timeout = intval; - break; - case Opt_osd_idle_ttl: - args->osd_idle_ttl = intval; - break; - case Opt_mount_timeout: - args->mount_timeout = intval; - break; - case Opt_caps_wanted_delay_min: - args->caps_wanted_delay_min = intval; - break; - case Opt_caps_wanted_delay_max: - args->caps_wanted_delay_max = intval; - break; - case Opt_readdir_max_entries: - args->max_readdir = intval; - break; - case Opt_readdir_max_bytes: - args->max_readdir_bytes = intval; - break; - case Opt_congestion_kb: - args->congestion_kb = intval; - break; - - case Opt_noshare: - args->flags |= CEPH_OPT_NOSHARE; - break; - - case Opt_dirstat: - args->flags |= CEPH_OPT_DIRSTAT; - break; - case Opt_nodirstat: - args->flags &= ~CEPH_OPT_DIRSTAT; - break; - case Opt_rbytes: - args->flags |= CEPH_OPT_RBYTES; - break; - case Opt_norbytes: - args->flags &= ~CEPH_OPT_RBYTES; - break; - case Opt_nocrc: - args->flags |= CEPH_OPT_NOCRC; - break; - case Opt_noasyncreaddir: - args->flags |= CEPH_OPT_NOASYNCREADDIR; - break; - - default: - BUG_ON(token); - } - } - return args; + err = ceph_parse_options(popt, options, dev_name, dev_name_end, + parse_fsopt_token, (void *)fsopt); + if (err) + goto out; + + /* success */ + *pfsopt = fsopt; + return 0; out: - kfree(args->mon_addr); - kfree(args); - return ERR_PTR(err); + destroy_mount_options(fsopt); + return err; } -static void destroy_mount_args(struct ceph_mount_args *args) +/** + * ceph_show_options - Show mount options in /proc/mounts + * @m: seq_file to write to + * @mnt: mount descriptor + */ +static int ceph_show_options(struct seq_file *m, struct vfsmount *mnt) { - dout("destroy_mount_args %p\n", args); - kfree(args->snapdir_name); - args->snapdir_name = NULL; - kfree(args->name); - args->name = NULL; - kfree(args->secret); - args->secret = NULL; - kfree(args); + struct ceph_fs_client *fsc = ceph_sb_to_client(mnt->mnt_sb); + struct ceph_mount_options *fsopt = fsc->mount_options; + struct ceph_options *opt = fsc->client->options; + + if (opt->flags & CEPH_OPT_FSID) + seq_printf(m, ",fsid=%pU", &opt->fsid); + if (opt->flags & CEPH_OPT_NOSHARE) + seq_puts(m, ",noshare"); + if (opt->flags & CEPH_OPT_NOCRC) + seq_puts(m, ",nocrc"); + + if (opt->name) + seq_printf(m, ",name=%s", opt->name); + if (opt->secret) + seq_puts(m, ",secret=<hidden>"); + + if (opt->mount_timeout != CEPH_MOUNT_TIMEOUT_DEFAULT) + seq_printf(m, ",mount_timeout=%d", opt->mount_timeout); + if (opt->osd_idle_ttl != CEPH_OSD_IDLE_TTL_DEFAULT) + seq_printf(m, ",osd_idle_ttl=%d", opt->osd_idle_ttl); + if (opt->osd_timeout != CEPH_OSD_TIMEOUT_DEFAULT) + seq_printf(m, ",osdtimeout=%d", opt->osd_timeout); + if (opt->osd_keepalive_timeout != CEPH_OSD_KEEPALIVE_DEFAULT) + seq_printf(m, ",osdkeepalivetimeout=%d", + opt->osd_keepalive_timeout); + + if (fsopt->flags & CEPH_MOUNT_OPT_DIRSTAT) + seq_puts(m, ",dirstat"); + if ((fsopt->flags & CEPH_MOUNT_OPT_RBYTES) == 0) + seq_puts(m, ",norbytes"); + if (fsopt->flags & CEPH_MOUNT_OPT_NOASYNCREADDIR) + seq_puts(m, ",noasyncreaddir"); + + if (fsopt->wsize) + seq_printf(m, ",wsize=%d", fsopt->wsize); + if (fsopt->rsize != CEPH_MOUNT_RSIZE_DEFAULT) + seq_printf(m, ",rsize=%d", fsopt->rsize); + if (fsopt->congestion_kb != default_congestion_kb()) + seq_printf(m, ",write_congestion_kb=%d", fsopt->congestion_kb); + if (fsopt->caps_wanted_delay_min != CEPH_CAPS_WANTED_DELAY_MIN_DEFAULT) + seq_printf(m, ",caps_wanted_delay_min=%d", + fsopt->caps_wanted_delay_min); + if (fsopt->caps_wanted_delay_max != CEPH_CAPS_WANTED_DELAY_MAX_DEFAULT) + seq_printf(m, ",caps_wanted_delay_max=%d", + fsopt->caps_wanted_delay_max); + if (fsopt->cap_release_safety != CEPH_CAP_RELEASE_SAFETY_DEFAULT) + seq_printf(m, ",cap_release_safety=%d", + fsopt->cap_release_safety); + if (fsopt->max_readdir != CEPH_MAX_READDIR_DEFAULT) + seq_printf(m, ",readdir_max_entries=%d", fsopt->max_readdir); + if (fsopt->max_readdir_bytes != CEPH_MAX_READDIR_BYTES_DEFAULT) + seq_printf(m, ",readdir_max_bytes=%d", fsopt->max_readdir_bytes); + if (strcmp(fsopt->snapdir_name, CEPH_SNAPDIRNAME_DEFAULT)) + seq_printf(m, ",snapdirname=%s", fsopt->snapdir_name); + return 0; } /* - * create a fresh client instance + * handle any mon messages the standard library doesn't understand. + * return error if we don't either. */ -static struct ceph_client *ceph_create_client(struct ceph_mount_args *args) +static int extra_mon_dispatch(struct ceph_client *client, struct ceph_msg *msg) { - struct ceph_client *client; + struct ceph_fs_client *fsc = client->private; + int type = le16_to_cpu(msg->hdr.type); + + switch (type) { + case CEPH_MSG_MDS_MAP: + ceph_mdsc_handle_map(fsc->mdsc, msg); + return 0; + + default: + return -1; + } +} + +/* + * create a new fs client + */ +struct ceph_fs_client *create_fs_client(struct ceph_mount_options *fsopt, + struct ceph_options *opt) +{ + struct ceph_fs_client *fsc; int err = -ENOMEM; - client = kzalloc(sizeof(*client), GFP_KERNEL); - if (client == NULL) + fsc = kzalloc(sizeof(*fsc), GFP_KERNEL); + if (!fsc) return ERR_PTR(-ENOMEM); - mutex_init(&client->mount_mutex); - - init_waitqueue_head(&client->auth_wq); + fsc->client = ceph_create_client(opt, fsc); + if (IS_ERR(fsc->client)) { + err = PTR_ERR(fsc->client); + goto fail; + } + fsc->client->extra_mon_dispatch = extra_mon_dispatch; + fsc->client->supported_features |= CEPH_FEATURE_FLOCK; + fsc->client->monc.want_mdsmap = 1; - client->sb = NULL; - client->mount_state = CEPH_MOUNT_MOUNTING; - client->mount_args = args; + fsc->mount_options = fsopt; - client->msgr = NULL; + fsc->sb = NULL; + fsc->mount_state = CEPH_MOUNT_MOUNTING; - client->auth_err = 0; - atomic_long_set(&client->writeback_count, 0); + atomic_long_set(&fsc->writeback_count, 0); - err = bdi_init(&client->backing_dev_info); + err = bdi_init(&fsc->backing_dev_info); if (err < 0) - goto fail; + goto fail_client; err = -ENOMEM; - client->wb_wq = create_workqueue("ceph-writeback"); - if (client->wb_wq == NULL) + fsc->wb_wq = create_workqueue("ceph-writeback"); + if (fsc->wb_wq == NULL) goto fail_bdi; - client->pg_inv_wq = create_singlethread_workqueue("ceph-pg-invalid"); - if (client->pg_inv_wq == NULL) + fsc->pg_inv_wq = create_singlethread_workqueue("ceph-pg-invalid"); + if (fsc->pg_inv_wq == NULL) goto fail_wb_wq; - client->trunc_wq = create_singlethread_workqueue("ceph-trunc"); - if (client->trunc_wq == NULL) + fsc->trunc_wq = create_singlethread_workqueue("ceph-trunc"); + if (fsc->trunc_wq == NULL) goto fail_pg_inv_wq; /* set up mempools */ err = -ENOMEM; - client->wb_pagevec_pool = mempool_create_kmalloc_pool(10, - client->mount_args->wsize >> PAGE_CACHE_SHIFT); - if (!client->wb_pagevec_pool) + fsc->wb_pagevec_pool = mempool_create_kmalloc_pool(10, + fsc->mount_options->wsize >> PAGE_CACHE_SHIFT); + if (!fsc->wb_pagevec_pool) goto fail_trunc_wq; /* caps */ - client->min_caps = args->max_readdir; + fsc->min_caps = fsopt->max_readdir; + + return fsc; - /* subsystems */ - err = ceph_monc_init(&client->monc, client); - if (err < 0) - goto fail_mempool; - err = ceph_osdc_init(&client->osdc, client); - if (err < 0) - goto fail_monc; - err = ceph_mdsc_init(&client->mdsc, client); - if (err < 0) - goto fail_osdc; - return client; - -fail_osdc: - ceph_osdc_stop(&client->osdc); -fail_monc: - ceph_monc_stop(&client->monc); -fail_mempool: - mempool_destroy(client->wb_pagevec_pool); fail_trunc_wq: - destroy_workqueue(client->trunc_wq); + destroy_workqueue(fsc->trunc_wq); fail_pg_inv_wq: - destroy_workqueue(client->pg_inv_wq); + destroy_workqueue(fsc->pg_inv_wq); fail_wb_wq: - destroy_workqueue(client->wb_wq); + destroy_workqueue(fsc->wb_wq); fail_bdi: - bdi_destroy(&client->backing_dev_info); + bdi_destroy(&fsc->backing_dev_info); +fail_client: + ceph_destroy_client(fsc->client); fail: - kfree(client); + kfree(fsc); return ERR_PTR(err); } -static void ceph_destroy_client(struct ceph_client *client) +void destroy_fs_client(struct ceph_fs_client *fsc) { - dout("destroy_client %p\n", client); + dout("destroy_fs_client %p\n", fsc); - /* unmount */ - ceph_mdsc_stop(&client->mdsc); - ceph_osdc_stop(&client->osdc); + destroy_workqueue(fsc->wb_wq); + destroy_workqueue(fsc->pg_inv_wq); + destroy_workqueue(fsc->trunc_wq); - /* - * make sure mds and osd connections close out before destroying - * the auth module, which is needed to free those connections' - * ceph_authorizers. - */ - ceph_msgr_flush(); - - ceph_monc_stop(&client->monc); + bdi_destroy(&fsc->backing_dev_info); - ceph_debugfs_client_cleanup(client); - destroy_workqueue(client->wb_wq); - destroy_workqueue(client->pg_inv_wq); - destroy_workqueue(client->trunc_wq); + mempool_destroy(fsc->wb_pagevec_pool); - bdi_destroy(&client->backing_dev_info); + destroy_mount_options(fsc->mount_options); - if (client->msgr) - ceph_messenger_destroy(client->msgr); - mempool_destroy(client->wb_pagevec_pool); + ceph_fs_debugfs_cleanup(fsc); - destroy_mount_args(client->mount_args); + ceph_destroy_client(fsc->client); - kfree(client); - dout("destroy_client %p done\n", client); + kfree(fsc); + dout("destroy_fs_client %p done\n", fsc); } /* - * Initially learn our fsid, or verify an fsid matches. + * caches */ -int ceph_check_fsid(struct ceph_client *client, struct ceph_fsid *fsid) +struct kmem_cache *ceph_inode_cachep; +struct kmem_cache *ceph_cap_cachep; +struct kmem_cache *ceph_dentry_cachep; +struct kmem_cache *ceph_file_cachep; + +static void ceph_inode_init_once(void *foo) { - if (client->have_fsid) { - if (ceph_fsid_compare(&client->fsid, fsid)) { - pr_err("bad fsid, had %pU got %pU", - &client->fsid, fsid); - return -1; - } - } else { - pr_info("client%lld fsid %pU\n", client->monc.auth->global_id, - fsid); - memcpy(&client->fsid, fsid, sizeof(*fsid)); - ceph_debugfs_client_init(client); - client->have_fsid = true; - } + struct ceph_inode_info *ci = foo; + inode_init_once(&ci->vfs_inode); +} + +static int __init init_caches(void) +{ + ceph_inode_cachep = kmem_cache_create("ceph_inode_info", + sizeof(struct ceph_inode_info), + __alignof__(struct ceph_inode_info), + (SLAB_RECLAIM_ACCOUNT|SLAB_MEM_SPREAD), + ceph_inode_init_once); + if (ceph_inode_cachep == NULL) + return -ENOMEM; + + ceph_cap_cachep = KMEM_CACHE(ceph_cap, + SLAB_RECLAIM_ACCOUNT|SLAB_MEM_SPREAD); + if (ceph_cap_cachep == NULL) + goto bad_cap; + + ceph_dentry_cachep = KMEM_CACHE(ceph_dentry_info, + SLAB_RECLAIM_ACCOUNT|SLAB_MEM_SPREAD); + if (ceph_dentry_cachep == NULL) + goto bad_dentry; + + ceph_file_cachep = KMEM_CACHE(ceph_file_info, + SLAB_RECLAIM_ACCOUNT|SLAB_MEM_SPREAD); + if (ceph_file_cachep == NULL) + goto bad_file; + return 0; + +bad_file: + kmem_cache_destroy(ceph_dentry_cachep); +bad_dentry: + kmem_cache_destroy(ceph_cap_cachep); +bad_cap: + kmem_cache_destroy(ceph_inode_cachep); + return -ENOMEM; } +static void destroy_caches(void) +{ + kmem_cache_destroy(ceph_inode_cachep); + kmem_cache_destroy(ceph_cap_cachep); + kmem_cache_destroy(ceph_dentry_cachep); + kmem_cache_destroy(ceph_file_cachep); +} + + /* - * true if we have the mon map (and have thus joined the cluster) + * ceph_umount_begin - initiate forced umount. Tear down down the + * mount, skipping steps that may hang while waiting for server(s). */ -static int have_mon_and_osd_map(struct ceph_client *client) +static void ceph_umount_begin(struct super_block *sb) { - return client->monc.monmap && client->monc.monmap->epoch && - client->osdc.osdmap && client->osdc.osdmap->epoch; + struct ceph_fs_client *fsc = ceph_sb_to_client(sb); + + dout("ceph_umount_begin - starting forced umount\n"); + if (!fsc) + return; + fsc->mount_state = CEPH_MOUNT_SHUTDOWN; + return; } +static const struct super_operations ceph_super_ops = { + .alloc_inode = ceph_alloc_inode, + .destroy_inode = ceph_destroy_inode, + .write_inode = ceph_write_inode, + .sync_fs = ceph_sync_fs, + .put_super = ceph_put_super, + .show_options = ceph_show_options, + .statfs = ceph_statfs, + .umount_begin = ceph_umount_begin, +}; + /* * Bootstrap mount by opening the root directory. Note the mount * @started time from caller, and time out if this takes too long. */ -static struct dentry *open_root_dentry(struct ceph_client *client, +static struct dentry *open_root_dentry(struct ceph_fs_client *fsc, const char *path, unsigned long started) { - struct ceph_mds_client *mdsc = &client->mdsc; + struct ceph_mds_client *mdsc = fsc->mdsc; struct ceph_mds_request *req = NULL; int err; struct dentry *root; @@ -784,14 +609,14 @@ static struct dentry *open_root_dentry(struct ceph_client *client, req->r_ino1.ino = CEPH_INO_ROOT; req->r_ino1.snap = CEPH_NOSNAP; req->r_started = started; - req->r_timeout = client->mount_args->mount_timeout * HZ; + req->r_timeout = fsc->client->options->mount_timeout * HZ; req->r_args.getattr.mask = cpu_to_le32(CEPH_STAT_CAP_INODE); req->r_num_caps = 2; err = ceph_mdsc_do_request(mdsc, NULL, req); if (err == 0) { dout("open_root_inode success\n"); if (ceph_ino(req->r_target_inode) == CEPH_INO_ROOT && - client->sb->s_root == NULL) + fsc->sb->s_root == NULL) root = d_alloc_root(req->r_target_inode); else root = d_obtain_alias(req->r_target_inode); @@ -804,105 +629,86 @@ static struct dentry *open_root_dentry(struct ceph_client *client, return root; } + + + /* * mount: join the ceph cluster, and open root directory. */ -static int ceph_mount(struct ceph_client *client, struct vfsmount *mnt, +static int ceph_mount(struct ceph_fs_client *fsc, struct vfsmount *mnt, const char *path) { - struct ceph_entity_addr *myaddr = NULL; int err; - unsigned long timeout = client->mount_args->mount_timeout * HZ; unsigned long started = jiffies; /* note the start time */ struct dentry *root; + int first = 0; /* first vfsmount for this super_block */ dout("mount start\n"); - mutex_lock(&client->mount_mutex); - - /* initialize the messenger */ - if (client->msgr == NULL) { - if (ceph_test_opt(client, MYIP)) - myaddr = &client->mount_args->my_addr; - client->msgr = ceph_messenger_create(myaddr); - if (IS_ERR(client->msgr)) { - err = PTR_ERR(client->msgr); - client->msgr = NULL; - goto out; - } - client->msgr->nocrc = ceph_test_opt(client, NOCRC); - } + mutex_lock(&fsc->client->mount_mutex); - /* open session, and wait for mon, mds, and osd maps */ - err = ceph_monc_open_session(&client->monc); + err = __ceph_open_session(fsc->client, started); if (err < 0) goto out; - while (!have_mon_and_osd_map(client)) { - err = -EIO; - if (timeout && time_after_eq(jiffies, started + timeout)) - goto out; - - /* wait */ - dout("mount waiting for mon_map\n"); - err = wait_event_interruptible_timeout(client->auth_wq, - have_mon_and_osd_map(client) || (client->auth_err < 0), - timeout); - if (err == -EINTR || err == -ERESTARTSYS) - goto out; - if (client->auth_err < 0) { - err = client->auth_err; - goto out; - } - } - dout("mount opening root\n"); - root = open_root_dentry(client, "", started); + root = open_root_dentry(fsc, "", started); if (IS_ERR(root)) { err = PTR_ERR(root); goto out; } - if (client->sb->s_root) + if (fsc->sb->s_root) { dput(root); - else - client->sb->s_root = root; + } else { + fsc->sb->s_root = root; + first = 1; + + err = ceph_fs_debugfs_init(fsc); + if (err < 0) + goto fail; + } if (path[0] == 0) { dget(root); } else { dout("mount opening base mountpoint\n"); - root = open_root_dentry(client, path, started); + root = open_root_dentry(fsc, path, started); if (IS_ERR(root)) { err = PTR_ERR(root); - dput(client->sb->s_root); - client->sb->s_root = NULL; - goto out; + goto fail; } } mnt->mnt_root = root; - mnt->mnt_sb = client->sb; + mnt->mnt_sb = fsc->sb; - client->mount_state = CEPH_MOUNT_MOUNTED; + fsc->mount_state = CEPH_MOUNT_MOUNTED; dout("mount success\n"); err = 0; out: - mutex_unlock(&client->mount_mutex); + mutex_unlock(&fsc->client->mount_mutex); return err; + +fail: + if (first) { + dput(fsc->sb->s_root); + fsc->sb->s_root = NULL; + } + goto out; } static int ceph_set_super(struct super_block *s, void *data) { - struct ceph_client *client = data; + struct ceph_fs_client *fsc = data; int ret; dout("set_super %p data %p\n", s, data); - s->s_flags = client->mount_args->sb_flags; + s->s_flags = fsc->mount_options->sb_flags; s->s_maxbytes = 1ULL << 40; /* temp value until we get mdsmap */ - s->s_fs_info = client; - client->sb = s; + s->s_fs_info = fsc; + fsc->sb = s; s->s_op = &ceph_super_ops; s->s_export_op = &ceph_export_ops; @@ -917,7 +723,7 @@ static int ceph_set_super(struct super_block *s, void *data) fail: s->s_fs_info = NULL; - client->sb = NULL; + fsc->sb = NULL; return ret; } @@ -926,30 +732,23 @@ fail: */ static int ceph_compare_super(struct super_block *sb, void *data) { - struct ceph_client *new = data; - struct ceph_mount_args *args = new->mount_args; - struct ceph_client *other = ceph_sb_to_client(sb); - int i; + struct ceph_fs_client *new = data; + struct ceph_mount_options *fsopt = new->mount_options; + struct ceph_options *opt = new->client->options; + struct ceph_fs_client *other = ceph_sb_to_client(sb); dout("ceph_compare_super %p\n", sb); - if (args->flags & CEPH_OPT_FSID) { - if (ceph_fsid_compare(&args->fsid, &other->fsid)) { - dout("fsid doesn't match\n"); - return 0; - } - } else { - /* do we share (a) monitor? */ - for (i = 0; i < new->monc.monmap->num_mon; i++) - if (ceph_monmap_contains(other->monc.monmap, - &new->monc.monmap->mon_inst[i].addr)) - break; - if (i == new->monc.monmap->num_mon) { - dout("mon ip not part of monmap\n"); - return 0; - } - dout("mon ip matches existing sb %p\n", sb); + + if (compare_mount_options(fsopt, opt, other)) { + dout("monitor(s)/mount options don't match\n"); + return 0; } - if (args->sb_flags != other->mount_args->sb_flags) { + if ((opt->flags & CEPH_OPT_FSID) && + ceph_fsid_compare(&opt->fsid, &other->client->fsid)) { + dout("fsid doesn't match\n"); + return 0; + } + if (fsopt->sb_flags != other->mount_options->sb_flags) { dout("flags differ\n"); return 0; } @@ -961,19 +760,20 @@ static int ceph_compare_super(struct super_block *sb, void *data) */ static atomic_long_t bdi_seq = ATOMIC_LONG_INIT(0); -static int ceph_register_bdi(struct super_block *sb, struct ceph_client *client) +static int ceph_register_bdi(struct super_block *sb, + struct ceph_fs_client *fsc) { int err; /* set ra_pages based on rsize mount option? */ - if (client->mount_args->rsize >= PAGE_CACHE_SIZE) - client->backing_dev_info.ra_pages = - (client->mount_args->rsize + PAGE_CACHE_SIZE - 1) + if (fsc->mount_options->rsize >= PAGE_CACHE_SIZE) + fsc->backing_dev_info.ra_pages = + (fsc->mount_options->rsize + PAGE_CACHE_SIZE - 1) >> PAGE_SHIFT; - err = bdi_register(&client->backing_dev_info, NULL, "ceph-%d", + err = bdi_register(&fsc->backing_dev_info, NULL, "ceph-%d", atomic_long_inc_return(&bdi_seq)); if (!err) - sb->s_bdi = &client->backing_dev_info; + sb->s_bdi = &fsc->backing_dev_info; return err; } @@ -982,46 +782,52 @@ static int ceph_get_sb(struct file_system_type *fs_type, struct vfsmount *mnt) { struct super_block *sb; - struct ceph_client *client; + struct ceph_fs_client *fsc; int err; int (*compare_super)(struct super_block *, void *) = ceph_compare_super; const char *path = NULL; - struct ceph_mount_args *args; + struct ceph_mount_options *fsopt = NULL; + struct ceph_options *opt = NULL; dout("ceph_get_sb\n"); - args = parse_mount_args(flags, data, dev_name, &path); - if (IS_ERR(args)) { - err = PTR_ERR(args); + err = parse_mount_options(&fsopt, &opt, flags, data, dev_name, &path); + if (err < 0) goto out_final; - } /* create client (which we may/may not use) */ - client = ceph_create_client(args); - if (IS_ERR(client)) { - err = PTR_ERR(client); + fsc = create_fs_client(fsopt, opt); + if (IS_ERR(fsc)) { + err = PTR_ERR(fsc); + kfree(fsopt); + kfree(opt); goto out_final; } - if (client->mount_args->flags & CEPH_OPT_NOSHARE) + err = ceph_mdsc_init(fsc); + if (err < 0) + goto out; + + if (ceph_test_opt(fsc->client, NOSHARE)) compare_super = NULL; - sb = sget(fs_type, compare_super, ceph_set_super, client); + sb = sget(fs_type, compare_super, ceph_set_super, fsc); if (IS_ERR(sb)) { err = PTR_ERR(sb); goto out; } - if (ceph_sb_to_client(sb) != client) { - ceph_destroy_client(client); - client = ceph_sb_to_client(sb); - dout("get_sb got existing client %p\n", client); + if (ceph_sb_to_client(sb) != fsc) { + ceph_mdsc_destroy(fsc); + destroy_fs_client(fsc); + fsc = ceph_sb_to_client(sb); + dout("get_sb got existing client %p\n", fsc); } else { - dout("get_sb using new client %p\n", client); - err = ceph_register_bdi(sb, client); + dout("get_sb using new client %p\n", fsc); + err = ceph_register_bdi(sb, fsc); if (err < 0) goto out_splat; } - err = ceph_mount(client, mnt, path); + err = ceph_mount(fsc, mnt, path); if (err < 0) goto out_splat; dout("root %p inode %p ino %llx.%llx\n", mnt->mnt_root, @@ -1029,12 +835,13 @@ static int ceph_get_sb(struct file_system_type *fs_type, return 0; out_splat: - ceph_mdsc_close_sessions(&client->mdsc); + ceph_mdsc_close_sessions(fsc->mdsc); deactivate_locked_super(sb); goto out_final; out: - ceph_destroy_client(client); + ceph_mdsc_destroy(fsc); + destroy_fs_client(fsc); out_final: dout("ceph_get_sb fail %d\n", err); return err; @@ -1042,11 +849,12 @@ out_final: static void ceph_kill_sb(struct super_block *s) { - struct ceph_client *client = ceph_sb_to_client(s); + struct ceph_fs_client *fsc = ceph_sb_to_client(s); dout("kill_sb %p\n", s); - ceph_mdsc_pre_umount(&client->mdsc); + ceph_mdsc_pre_umount(fsc->mdsc); kill_anon_super(s); /* will call put_super after sb is r/o */ - ceph_destroy_client(client); + ceph_mdsc_destroy(fsc); + destroy_fs_client(fsc); } static struct file_system_type ceph_fs_type = { @@ -1062,36 +870,20 @@ static struct file_system_type ceph_fs_type = { static int __init init_ceph(void) { - int ret = 0; - - ret = ceph_debugfs_init(); - if (ret < 0) - goto out; - - ret = ceph_msgr_init(); - if (ret < 0) - goto out_debugfs; - - ret = init_caches(); + int ret = init_caches(); if (ret) - goto out_msgr; + goto out; ret = register_filesystem(&ceph_fs_type); if (ret) goto out_icache; - pr_info("loaded (mon/mds/osd proto %d/%d/%d, osdmap %d/%d %d/%d)\n", - CEPH_MONC_PROTOCOL, CEPH_MDSC_PROTOCOL, CEPH_OSDC_PROTOCOL, - CEPH_OSDMAP_VERSION, CEPH_OSDMAP_VERSION_EXT, - CEPH_OSDMAP_INC_VERSION, CEPH_OSDMAP_INC_VERSION_EXT); + pr_info("loaded (mds proto %d)\n", CEPH_MDSC_PROTOCOL); + return 0; out_icache: destroy_caches(); -out_msgr: - ceph_msgr_exit(); -out_debugfs: - ceph_debugfs_cleanup(); out: return ret; } @@ -1101,8 +893,6 @@ static void __exit exit_ceph(void) dout("exit_ceph\n"); unregister_filesystem(&ceph_fs_type); destroy_caches(); - ceph_msgr_exit(); - ceph_debugfs_cleanup(); } module_init(init_ceph); diff --git a/fs/ceph/super.h b/fs/ceph/super.h index b87638e84c4b..1886294e12f7 100644 --- a/fs/ceph/super.h +++ b/fs/ceph/super.h @@ -1,7 +1,7 @@ #ifndef _FS_CEPH_SUPER_H #define _FS_CEPH_SUPER_H -#include "ceph_debug.h" +#include <linux/ceph/ceph_debug.h> #include <asm/unaligned.h> #include <linux/backing-dev.h> @@ -14,13 +14,7 @@ #include <linux/writeback.h> #include <linux/slab.h> -#include "types.h" -#include "messenger.h" -#include "msgpool.h" -#include "mon_client.h" -#include "mds_client.h" -#include "osd_client.h" -#include "ceph_fs.h" +#include <linux/ceph/libceph.h> /* f_type in struct statfs */ #define CEPH_SUPER_MAGIC 0x00c36400 @@ -30,42 +24,25 @@ #define CEPH_BLOCK_SHIFT 20 /* 1 MB */ #define CEPH_BLOCK (1 << CEPH_BLOCK_SHIFT) -/* - * Supported features - */ -#define CEPH_FEATURE_SUPPORTED CEPH_FEATURE_NOSRCADDR | CEPH_FEATURE_FLOCK -#define CEPH_FEATURE_REQUIRED CEPH_FEATURE_NOSRCADDR +#define CEPH_MOUNT_OPT_DIRSTAT (1<<4) /* `cat dirname` for stats */ +#define CEPH_MOUNT_OPT_RBYTES (1<<5) /* dir st_bytes = rbytes */ +#define CEPH_MOUNT_OPT_NOASYNCREADDIR (1<<7) /* no dcache readdir */ -/* - * mount options - */ -#define CEPH_OPT_FSID (1<<0) -#define CEPH_OPT_NOSHARE (1<<1) /* don't share client with other sbs */ -#define CEPH_OPT_MYIP (1<<2) /* specified my ip */ -#define CEPH_OPT_DIRSTAT (1<<4) /* funky `cat dirname` for stats */ -#define CEPH_OPT_RBYTES (1<<5) /* dir st_bytes = rbytes */ -#define CEPH_OPT_NOCRC (1<<6) /* no data crc on writes */ -#define CEPH_OPT_NOASYNCREADDIR (1<<7) /* no dcache readdir */ +#define CEPH_MOUNT_OPT_DEFAULT (CEPH_MOUNT_OPT_RBYTES) -#define CEPH_OPT_DEFAULT (CEPH_OPT_RBYTES) +#define ceph_set_mount_opt(fsc, opt) \ + (fsc)->mount_options->flags |= CEPH_MOUNT_OPT_##opt; +#define ceph_test_mount_opt(fsc, opt) \ + (!!((fsc)->mount_options->flags & CEPH_MOUNT_OPT_##opt)) -#define ceph_set_opt(client, opt) \ - (client)->mount_args->flags |= CEPH_OPT_##opt; -#define ceph_test_opt(client, opt) \ - (!!((client)->mount_args->flags & CEPH_OPT_##opt)) +#define CEPH_MAX_READDIR_DEFAULT 1024 +#define CEPH_MAX_READDIR_BYTES_DEFAULT (512*1024) +#define CEPH_SNAPDIRNAME_DEFAULT ".snap" - -struct ceph_mount_args { - int sb_flags; +struct ceph_mount_options { int flags; - struct ceph_fsid fsid; - struct ceph_entity_addr my_addr; - int num_mon; - struct ceph_entity_addr *mon_addr; - int mount_timeout; - int osd_idle_ttl; - int osd_timeout; - int osd_keepalive_timeout; + int sb_flags; + int wsize; int rsize; /* max readahead */ int congestion_kb; /* max writeback in flight */ @@ -73,82 +50,25 @@ struct ceph_mount_args { int cap_release_safety; int max_readdir; /* max readdir result (entires) */ int max_readdir_bytes; /* max readdir result (bytes) */ - char *snapdir_name; /* default ".snap" */ - char *name; - char *secret; -}; -/* - * defaults - */ -#define CEPH_MOUNT_TIMEOUT_DEFAULT 60 -#define CEPH_OSD_TIMEOUT_DEFAULT 60 /* seconds */ -#define CEPH_OSD_KEEPALIVE_DEFAULT 5 -#define CEPH_OSD_IDLE_TTL_DEFAULT 60 -#define CEPH_MOUNT_RSIZE_DEFAULT (512*1024) /* readahead */ -#define CEPH_MAX_READDIR_DEFAULT 1024 -#define CEPH_MAX_READDIR_BYTES_DEFAULT (512*1024) - -#define CEPH_MSG_MAX_FRONT_LEN (16*1024*1024) -#define CEPH_MSG_MAX_DATA_LEN (16*1024*1024) - -#define CEPH_SNAPDIRNAME_DEFAULT ".snap" -#define CEPH_AUTH_NAME_DEFAULT "guest" -/* - * Delay telling the MDS we no longer want caps, in case we reopen - * the file. Delay a minimum amount of time, even if we send a cap - * message for some other reason. Otherwise, take the oppotunity to - * update the mds to avoid sending another message later. - */ -#define CEPH_CAPS_WANTED_DELAY_MIN_DEFAULT 5 /* cap release delay */ -#define CEPH_CAPS_WANTED_DELAY_MAX_DEFAULT 60 /* cap release delay */ - -#define CEPH_CAP_RELEASE_SAFETY_DEFAULT (CEPH_CAPS_PER_RELEASE * 4) - -/* mount state */ -enum { - CEPH_MOUNT_MOUNTING, - CEPH_MOUNT_MOUNTED, - CEPH_MOUNT_UNMOUNTING, - CEPH_MOUNT_UNMOUNTED, - CEPH_MOUNT_SHUTDOWN, -}; - -/* - * subtract jiffies - */ -static inline unsigned long time_sub(unsigned long a, unsigned long b) -{ - BUG_ON(time_after(b, a)); - return (long)a - (long)b; -} - -/* - * per-filesystem client state - * - * possibly shared by multiple mount points, if they are - * mounting the same ceph filesystem/cluster. - */ -struct ceph_client { - struct ceph_fsid fsid; - bool have_fsid; + /* + * everything above this point can be memcmp'd; everything below + * is handled in compare_mount_options() + */ - struct mutex mount_mutex; /* serialize mount attempts */ - struct ceph_mount_args *mount_args; + char *snapdir_name; /* default ".snap" */ +}; +struct ceph_fs_client { struct super_block *sb; - unsigned long mount_state; - wait_queue_head_t auth_wq; - - int auth_err; + struct ceph_mount_options *mount_options; + struct ceph_client *client; + unsigned long mount_state; int min_caps; /* min caps i added */ - struct ceph_messenger *msgr; /* messenger instance */ - struct ceph_mon_client monc; - struct ceph_mds_client mdsc; - struct ceph_osd_client osdc; + struct ceph_mds_client *mdsc; /* writeback */ mempool_t *wb_pagevec_pool; @@ -160,14 +80,14 @@ struct ceph_client { struct backing_dev_info backing_dev_info; #ifdef CONFIG_DEBUG_FS - struct dentry *debugfs_monmap; - struct dentry *debugfs_mdsmap, *debugfs_osdmap; - struct dentry *debugfs_dir, *debugfs_dentry_lru, *debugfs_caps; + struct dentry *debugfs_dentry_lru, *debugfs_caps; struct dentry *debugfs_congestion_kb; struct dentry *debugfs_bdi; + struct dentry *debugfs_mdsc, *debugfs_mdsmap; #endif }; + /* * File i/o capability. This tracks shared state with the metadata * server that allows us to cache or writeback attributes or to read @@ -275,6 +195,20 @@ struct ceph_inode_xattr { int should_free_val; }; +/* + * Ceph dentry state + */ +struct ceph_dentry_info { + struct ceph_mds_session *lease_session; + u32 lease_gen, lease_shared_gen; + u32 lease_seq; + unsigned long lease_renew_after, lease_renew_from; + struct list_head lru; + struct dentry *dentry; + u64 time; + u64 offset; +}; + struct ceph_inode_xattrs_info { /* * (still encoded) xattr blob. we avoid the overhead of parsing @@ -296,11 +230,6 @@ struct ceph_inode_xattrs_info { /* * Ceph inode. */ -#define CEPH_I_COMPLETE 1 /* we have complete directory cached */ -#define CEPH_I_NODELAY 4 /* do not delay cap release */ -#define CEPH_I_FLUSH 8 /* do not delay flush of dirty metadata */ -#define CEPH_I_NOFLUSH 16 /* do not flush dirty caps */ - struct ceph_inode_info { struct ceph_vino i_vino; /* ceph ino + snap */ @@ -391,6 +320,63 @@ static inline struct ceph_inode_info *ceph_inode(struct inode *inode) return container_of(inode, struct ceph_inode_info, vfs_inode); } +static inline struct ceph_vino ceph_vino(struct inode *inode) +{ + return ceph_inode(inode)->i_vino; +} + +/* + * ino_t is <64 bits on many architectures, blech. + * + * don't include snap in ino hash, at least for now. + */ +static inline ino_t ceph_vino_to_ino(struct ceph_vino vino) +{ + ino_t ino = (ino_t)vino.ino; /* ^ (vino.snap << 20); */ +#if BITS_PER_LONG == 32 + ino ^= vino.ino >> (sizeof(u64)-sizeof(ino_t)) * 8; + if (!ino) + ino = 1; +#endif + return ino; +} + +/* for printf-style formatting */ +#define ceph_vinop(i) ceph_inode(i)->i_vino.ino, ceph_inode(i)->i_vino.snap + +static inline u64 ceph_ino(struct inode *inode) +{ + return ceph_inode(inode)->i_vino.ino; +} +static inline u64 ceph_snap(struct inode *inode) +{ + return ceph_inode(inode)->i_vino.snap; +} + +static inline int ceph_ino_compare(struct inode *inode, void *data) +{ + struct ceph_vino *pvino = (struct ceph_vino *)data; + struct ceph_inode_info *ci = ceph_inode(inode); + return ci->i_vino.ino == pvino->ino && + ci->i_vino.snap == pvino->snap; +} + +static inline struct inode *ceph_find_inode(struct super_block *sb, + struct ceph_vino vino) +{ + ino_t t = ceph_vino_to_ino(vino); + return ilookup5(sb, t, ceph_ino_compare, &vino); +} + + +/* + * Ceph inode. + */ +#define CEPH_I_COMPLETE 1 /* we have complete directory cached */ +#define CEPH_I_NODELAY 4 /* do not delay cap release */ +#define CEPH_I_FLUSH 8 /* do not delay flush of dirty metadata */ +#define CEPH_I_NOFLUSH 16 /* do not flush dirty caps */ + static inline void ceph_i_clear(struct inode *inode, unsigned mask) { struct ceph_inode_info *ci = ceph_inode(inode); @@ -414,8 +400,9 @@ static inline bool ceph_i_test(struct inode *inode, unsigned mask) struct ceph_inode_info *ci = ceph_inode(inode); bool r; - smp_mb(); + spin_lock(&inode->i_lock); r = (ci->i_ceph_flags & mask) == mask; + spin_unlock(&inode->i_lock); return r; } @@ -432,20 +419,6 @@ extern u32 ceph_choose_frag(struct ceph_inode_info *ci, u32 v, struct ceph_inode_frag *pfrag, int *found); -/* - * Ceph dentry state - */ -struct ceph_dentry_info { - struct ceph_mds_session *lease_session; - u32 lease_gen, lease_shared_gen; - u32 lease_seq; - unsigned long lease_renew_after, lease_renew_from; - struct list_head lru; - struct dentry *dentry; - u64 time; - u64 offset; -}; - static inline struct ceph_dentry_info *ceph_dentry(struct dentry *dentry) { return (struct ceph_dentry_info *)dentry->d_fsdata; @@ -456,22 +429,6 @@ static inline loff_t ceph_make_fpos(unsigned frag, unsigned off) return ((loff_t)frag << 32) | (loff_t)off; } -/* - * ino_t is <64 bits on many architectures, blech. - * - * don't include snap in ino hash, at least for now. - */ -static inline ino_t ceph_vino_to_ino(struct ceph_vino vino) -{ - ino_t ino = (ino_t)vino.ino; /* ^ (vino.snap << 20); */ -#if BITS_PER_LONG == 32 - ino ^= vino.ino >> (sizeof(u64)-sizeof(ino_t)) * 8; - if (!ino) - ino = 1; -#endif - return ino; -} - static inline int ceph_set_ino_cb(struct inode *inode, void *data) { ceph_inode(inode)->i_vino = *(struct ceph_vino *)data; @@ -479,39 +436,6 @@ static inline int ceph_set_ino_cb(struct inode *inode, void *data) return 0; } -static inline struct ceph_vino ceph_vino(struct inode *inode) -{ - return ceph_inode(inode)->i_vino; -} - -/* for printf-style formatting */ -#define ceph_vinop(i) ceph_inode(i)->i_vino.ino, ceph_inode(i)->i_vino.snap - -static inline u64 ceph_ino(struct inode *inode) -{ - return ceph_inode(inode)->i_vino.ino; -} -static inline u64 ceph_snap(struct inode *inode) -{ - return ceph_inode(inode)->i_vino.snap; -} - -static inline int ceph_ino_compare(struct inode *inode, void *data) -{ - struct ceph_vino *pvino = (struct ceph_vino *)data; - struct ceph_inode_info *ci = ceph_inode(inode); - return ci->i_vino.ino == pvino->ino && - ci->i_vino.snap == pvino->snap; -} - -static inline struct inode *ceph_find_inode(struct super_block *sb, - struct ceph_vino vino) -{ - ino_t t = ceph_vino_to_ino(vino); - return ilookup5(sb, t, ceph_ino_compare, &vino); -} - - /* * caps helpers */ @@ -576,18 +500,18 @@ extern int ceph_reserve_caps(struct ceph_mds_client *mdsc, struct ceph_cap_reservation *ctx, int need); extern int ceph_unreserve_caps(struct ceph_mds_client *mdsc, struct ceph_cap_reservation *ctx); -extern void ceph_reservation_status(struct ceph_client *client, +extern void ceph_reservation_status(struct ceph_fs_client *client, int *total, int *avail, int *used, int *reserved, int *min); -static inline struct ceph_client *ceph_inode_to_client(struct inode *inode) +static inline struct ceph_fs_client *ceph_inode_to_client(struct inode *inode) { - return (struct ceph_client *)inode->i_sb->s_fs_info; + return (struct ceph_fs_client *)inode->i_sb->s_fs_info; } -static inline struct ceph_client *ceph_sb_to_client(struct super_block *sb) +static inline struct ceph_fs_client *ceph_sb_to_client(struct super_block *sb) { - return (struct ceph_client *)sb->s_fs_info; + return (struct ceph_fs_client *)sb->s_fs_info; } @@ -617,51 +541,6 @@ struct ceph_file_info { /* - * snapshots - */ - -/* - * A "snap context" is the set of existing snapshots when we - * write data. It is used by the OSD to guide its COW behavior. - * - * The ceph_snap_context is refcounted, and attached to each dirty - * page, indicating which context the dirty data belonged when it was - * dirtied. - */ -struct ceph_snap_context { - atomic_t nref; - u64 seq; - int num_snaps; - u64 snaps[]; -}; - -static inline struct ceph_snap_context * -ceph_get_snap_context(struct ceph_snap_context *sc) -{ - /* - printk("get_snap_context %p %d -> %d\n", sc, atomic_read(&sc->nref), - atomic_read(&sc->nref)+1); - */ - if (sc) - atomic_inc(&sc->nref); - return sc; -} - -static inline void ceph_put_snap_context(struct ceph_snap_context *sc) -{ - if (!sc) - return; - /* - printk("put_snap_context %p %d -> %d\n", sc, atomic_read(&sc->nref), - atomic_read(&sc->nref)-1); - */ - if (atomic_dec_and_test(&sc->nref)) { - /*printk(" deleting snap_context %p\n", sc);*/ - kfree(sc); - } -} - -/* * A "snap realm" describes a subset of the file hierarchy sharing * the same set of snapshots that apply to it. The realms themselves * are organized into a hierarchy, such that children inherit (some of) @@ -699,16 +578,33 @@ struct ceph_snap_realm { spinlock_t inodes_with_caps_lock; }; - - -/* - * calculate the number of pages a given length and offset map onto, - * if we align the data. - */ -static inline int calc_pages_for(u64 off, u64 len) +static inline int default_congestion_kb(void) { - return ((off+len+PAGE_CACHE_SIZE-1) >> PAGE_CACHE_SHIFT) - - (off >> PAGE_CACHE_SHIFT); + int congestion_kb; + + /* + * Copied from NFS + * + * congestion size, scale with available memory. + * + * 64MB: 8192k + * 128MB: 11585k + * 256MB: 16384k + * 512MB: 23170k + * 1GB: 32768k + * 2GB: 46340k + * 4GB: 65536k + * 8GB: 92681k + * 16GB: 131072k + * + * This allows larger machines to have larger/more transfers. + * Limit the default to 256M + */ + congestion_kb = (16*int_sqrt(totalram_pages)) << (PAGE_SHIFT-10); + if (congestion_kb > 256*1024) + congestion_kb = 256*1024; + + return congestion_kb; } @@ -741,16 +637,6 @@ static inline bool __ceph_have_pending_cap_snap(struct ceph_inode_info *ci) ci_item)->writing; } - -/* super.c */ -extern struct kmem_cache *ceph_inode_cachep; -extern struct kmem_cache *ceph_cap_cachep; -extern struct kmem_cache *ceph_dentry_cachep; -extern struct kmem_cache *ceph_file_cachep; - -extern const char *ceph_msg_type_name(int type); -extern int ceph_check_fsid(struct ceph_client *client, struct ceph_fsid *fsid); - /* inode.c */ extern const struct inode_operations ceph_file_iops; @@ -857,12 +743,18 @@ extern int ceph_mmap(struct file *file, struct vm_area_struct *vma); /* file.c */ extern const struct file_operations ceph_file_fops; extern const struct address_space_operations ceph_aops; +extern int ceph_copy_to_page_vector(struct page **pages, + const char *data, + loff_t off, size_t len); +extern int ceph_copy_from_page_vector(struct page **pages, + char *data, + loff_t off, size_t len); +extern struct page **ceph_alloc_page_vector(int num_pages, gfp_t flags); extern int ceph_open(struct inode *inode, struct file *file); extern struct dentry *ceph_lookup_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd, int mode, int locked_dir); extern int ceph_release(struct inode *inode, struct file *filp); -extern void ceph_release_page_vector(struct page **pages, int num_pages); /* dir.c */ extern const struct file_operations ceph_dir_fops; @@ -892,12 +784,6 @@ extern long ceph_ioctl(struct file *file, unsigned int cmd, unsigned long arg); /* export.c */ extern const struct export_operations ceph_export_ops; -/* debugfs.c */ -extern int ceph_debugfs_init(void); -extern void ceph_debugfs_cleanup(void); -extern int ceph_debugfs_client_init(struct ceph_client *client); -extern void ceph_debugfs_client_cleanup(struct ceph_client *client); - /* locks.c */ extern int ceph_lock(struct file *file, int cmd, struct file_lock *fl); extern int ceph_flock(struct file *file, int cmd, struct file_lock *fl); @@ -914,4 +800,8 @@ static inline struct inode *get_dentry_parent_inode(struct dentry *dentry) return NULL; } +/* debugfs.c */ +extern int ceph_fs_debugfs_init(struct ceph_fs_client *client); +extern void ceph_fs_debugfs_cleanup(struct ceph_fs_client *client); + #endif /* _FS_CEPH_SUPER_H */ diff --git a/fs/ceph/xattr.c b/fs/ceph/xattr.c index 9578af610b73..6e12a6ba5f79 100644 --- a/fs/ceph/xattr.c +++ b/fs/ceph/xattr.c @@ -1,6 +1,9 @@ -#include "ceph_debug.h" +#include <linux/ceph/ceph_debug.h> + #include "super.h" -#include "decode.h" +#include "mds_client.h" + +#include <linux/ceph/decode.h> #include <linux/xattr.h> #include <linux/slab.h> @@ -620,12 +623,12 @@ out: static int ceph_sync_setxattr(struct dentry *dentry, const char *name, const char *value, size_t size, int flags) { - struct ceph_client *client = ceph_sb_to_client(dentry->d_sb); + struct ceph_fs_client *fsc = ceph_sb_to_client(dentry->d_sb); struct inode *inode = dentry->d_inode; struct ceph_inode_info *ci = ceph_inode(inode); struct inode *parent_inode = dentry->d_parent->d_inode; struct ceph_mds_request *req; - struct ceph_mds_client *mdsc = &client->mdsc; + struct ceph_mds_client *mdsc = fsc->mdsc; int err; int i, nr_pages; struct page **pages = NULL; @@ -713,10 +716,9 @@ int ceph_setxattr(struct dentry *dentry, const char *name, /* preallocate memory for xattr name, value, index node */ err = -ENOMEM; - newname = kmalloc(name_len + 1, GFP_NOFS); + newname = kmemdup(name, name_len + 1, GFP_NOFS); if (!newname) goto out; - memcpy(newname, name, name_len + 1); if (val_len) { newval = kmalloc(val_len + 1, GFP_NOFS); @@ -777,8 +779,8 @@ out: static int ceph_send_removexattr(struct dentry *dentry, const char *name) { - struct ceph_client *client = ceph_sb_to_client(dentry->d_sb); - struct ceph_mds_client *mdsc = &client->mdsc; + struct ceph_fs_client *fsc = ceph_sb_to_client(dentry->d_sb); + struct ceph_mds_client *mdsc = fsc->mdsc; struct inode *inode = dentry->d_inode; struct inode *parent_inode = dentry->d_parent->d_inode; struct ceph_mds_request *req; diff --git a/fs/exec.c b/fs/exec.c index 03278c984ba0..6d2b6f936858 100644 --- a/fs/exec.c +++ b/fs/exec.c @@ -2024,6 +2024,7 @@ int dump_write(struct file *file, const void *addr, int nr) { return access_ok(VERIFY_READ, addr, nr) && file->f_op->write(file, addr, nr, &file->f_pos) == nr; } +EXPORT_SYMBOL(dump_write); int dump_seek(struct file *file, loff_t off) { @@ -2052,3 +2053,4 @@ int dump_seek(struct file *file, loff_t off) } return ret; } +EXPORT_SYMBOL(dump_seek); diff --git a/fs/gfs2/Kconfig b/fs/gfs2/Kconfig index cc9665522148..c465ae066c62 100644 --- a/fs/gfs2/Kconfig +++ b/fs/gfs2/Kconfig @@ -1,6 +1,6 @@ config GFS2_FS tristate "GFS2 file system support" - depends on EXPERIMENTAL && (64BIT || LBDAF) + depends on (64BIT || LBDAF) select DLM if GFS2_FS_LOCKING_DLM select CONFIGFS_FS if GFS2_FS_LOCKING_DLM select SYSFS if GFS2_FS_LOCKING_DLM diff --git a/fs/gfs2/aops.c b/fs/gfs2/aops.c index 194fe16d8418..6b24afb96aae 100644 --- a/fs/gfs2/aops.c +++ b/fs/gfs2/aops.c @@ -36,8 +36,8 @@ #include "glops.h" -static void gfs2_page_add_databufs(struct gfs2_inode *ip, struct page *page, - unsigned int from, unsigned int to) +void gfs2_page_add_databufs(struct gfs2_inode *ip, struct page *page, + unsigned int from, unsigned int to) { struct buffer_head *head = page_buffers(page); unsigned int bsize = head->b_size; @@ -615,7 +615,7 @@ static int gfs2_write_begin(struct file *file, struct address_space *mapping, unsigned int data_blocks = 0, ind_blocks = 0, rblocks; int alloc_required; int error = 0; - struct gfs2_alloc *al; + struct gfs2_alloc *al = NULL; pgoff_t index = pos >> PAGE_CACHE_SHIFT; unsigned from = pos & (PAGE_CACHE_SIZE - 1); unsigned to = from + len; @@ -663,6 +663,8 @@ static int gfs2_write_begin(struct file *file, struct address_space *mapping, rblocks += RES_STATFS + RES_QUOTA; if (&ip->i_inode == sdp->sd_rindex) rblocks += 2 * RES_STATFS; + if (alloc_required) + rblocks += gfs2_rg_blocks(al); error = gfs2_trans_begin(sdp, rblocks, PAGE_CACHE_SIZE/sdp->sd_sb.sb_bsize); @@ -696,13 +698,11 @@ out: page_cache_release(page); - /* - * XXX(truncate): the call below should probably be replaced with - * a call to the gfs2-specific truncate blocks helper to actually - * release disk blocks.. - */ + gfs2_trans_end(sdp); if (pos + len > ip->i_inode.i_size) - truncate_setsize(&ip->i_inode, ip->i_inode.i_size); + gfs2_trim_blocks(&ip->i_inode); + goto out_trans_fail; + out_endtrans: gfs2_trans_end(sdp); out_trans_fail: @@ -802,10 +802,8 @@ static int gfs2_stuffed_write_end(struct inode *inode, struct buffer_head *dibh, page_cache_release(page); if (copied) { - if (inode->i_size < to) { + if (inode->i_size < to) i_size_write(inode, to); - ip->i_disksize = inode->i_size; - } gfs2_dinode_out(ip, di); mark_inode_dirty(inode); } @@ -876,8 +874,6 @@ static int gfs2_write_end(struct file *file, struct address_space *mapping, ret = generic_write_end(file, mapping, pos, len, copied, page, fsdata); if (ret > 0) { - if (inode->i_size > ip->i_disksize) - ip->i_disksize = inode->i_size; gfs2_dinode_out(ip, dibh->b_data); mark_inode_dirty(inode); } diff --git a/fs/gfs2/bmap.c b/fs/gfs2/bmap.c index 6f482809d1a3..5476c066d4ee 100644 --- a/fs/gfs2/bmap.c +++ b/fs/gfs2/bmap.c @@ -50,7 +50,7 @@ struct strip_mine { * @ip: the inode * @dibh: the dinode buffer * @block: the block number that was allocated - * @private: any locked page held by the caller process + * @page: The (optional) page. This is looked up if @page is NULL * * Returns: errno */ @@ -109,8 +109,7 @@ static int gfs2_unstuffer_page(struct gfs2_inode *ip, struct buffer_head *dibh, /** * gfs2_unstuff_dinode - Unstuff a dinode when the data has grown too big * @ip: The GFS2 inode to unstuff - * @unstuffer: the routine that handles unstuffing a non-zero length file - * @private: private data for the unstuffer + * @page: The (optional) page. This is looked up if the @page is NULL * * This routine unstuffs a dinode and returns it to a "normal" state such * that the height can be grown in the traditional way. @@ -132,7 +131,7 @@ int gfs2_unstuff_dinode(struct gfs2_inode *ip, struct page *page) if (error) goto out; - if (ip->i_disksize) { + if (i_size_read(&ip->i_inode)) { /* Get a free block, fill it with the stuffed data, and write it out to disk */ @@ -161,7 +160,7 @@ int gfs2_unstuff_dinode(struct gfs2_inode *ip, struct page *page) di = (struct gfs2_dinode *)dibh->b_data; gfs2_buffer_clear_tail(dibh, sizeof(struct gfs2_dinode)); - if (ip->i_disksize) { + if (i_size_read(&ip->i_inode)) { *(__be64 *)(di + 1) = cpu_to_be64(block); gfs2_add_inode_blocks(&ip->i_inode, 1); di->di_blocks = cpu_to_be64(gfs2_get_inode_blocks(&ip->i_inode)); @@ -885,83 +884,14 @@ out: } /** - * do_grow - Make a file look bigger than it is - * @ip: the inode - * @size: the size to set the file to - * - * Called with an exclusive lock on @ip. - * - * Returns: errno - */ - -static int do_grow(struct gfs2_inode *ip, u64 size) -{ - struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode); - struct gfs2_alloc *al; - struct buffer_head *dibh; - int error; - - al = gfs2_alloc_get(ip); - if (!al) - return -ENOMEM; - - error = gfs2_quota_lock_check(ip); - if (error) - goto out; - - al->al_requested = sdp->sd_max_height + RES_DATA; - - error = gfs2_inplace_reserve(ip); - if (error) - goto out_gunlock_q; - - error = gfs2_trans_begin(sdp, - sdp->sd_max_height + al->al_rgd->rd_length + - RES_JDATA + RES_DINODE + RES_STATFS + RES_QUOTA, 0); - if (error) - goto out_ipres; - - error = gfs2_meta_inode_buffer(ip, &dibh); - if (error) - goto out_end_trans; - - if (size > sdp->sd_sb.sb_bsize - sizeof(struct gfs2_dinode)) { - if (gfs2_is_stuffed(ip)) { - error = gfs2_unstuff_dinode(ip, NULL); - if (error) - goto out_brelse; - } - } - - ip->i_disksize = size; - ip->i_inode.i_mtime = ip->i_inode.i_ctime = CURRENT_TIME; - gfs2_trans_add_bh(ip->i_gl, dibh, 1); - gfs2_dinode_out(ip, dibh->b_data); - -out_brelse: - brelse(dibh); -out_end_trans: - gfs2_trans_end(sdp); -out_ipres: - gfs2_inplace_release(ip); -out_gunlock_q: - gfs2_quota_unlock(ip); -out: - gfs2_alloc_put(ip); - return error; -} - - -/** * gfs2_block_truncate_page - Deal with zeroing out data for truncate * * This is partly borrowed from ext3. */ -static int gfs2_block_truncate_page(struct address_space *mapping) +static int gfs2_block_truncate_page(struct address_space *mapping, loff_t from) { struct inode *inode = mapping->host; struct gfs2_inode *ip = GFS2_I(inode); - loff_t from = inode->i_size; unsigned long index = from >> PAGE_CACHE_SHIFT; unsigned offset = from & (PAGE_CACHE_SIZE-1); unsigned blocksize, iblock, length, pos; @@ -1023,9 +953,11 @@ unlock: return err; } -static int trunc_start(struct gfs2_inode *ip, u64 size) +static int trunc_start(struct inode *inode, u64 oldsize, u64 newsize) { - struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode); + struct gfs2_inode *ip = GFS2_I(inode); + struct gfs2_sbd *sdp = GFS2_SB(inode); + struct address_space *mapping = inode->i_mapping; struct buffer_head *dibh; int journaled = gfs2_is_jdata(ip); int error; @@ -1039,31 +971,26 @@ static int trunc_start(struct gfs2_inode *ip, u64 size) if (error) goto out; + gfs2_trans_add_bh(ip->i_gl, dibh, 1); + if (gfs2_is_stuffed(ip)) { - u64 dsize = size + sizeof(struct gfs2_dinode); - ip->i_disksize = size; - ip->i_inode.i_mtime = ip->i_inode.i_ctime = CURRENT_TIME; - gfs2_trans_add_bh(ip->i_gl, dibh, 1); - gfs2_dinode_out(ip, dibh->b_data); - if (dsize > dibh->b_size) - dsize = dibh->b_size; - gfs2_buffer_clear_tail(dibh, dsize); - error = 1; + gfs2_buffer_clear_tail(dibh, sizeof(struct gfs2_dinode) + newsize); } else { - if (size & (u64)(sdp->sd_sb.sb_bsize - 1)) - error = gfs2_block_truncate_page(ip->i_inode.i_mapping); - - if (!error) { - ip->i_disksize = size; - ip->i_inode.i_mtime = ip->i_inode.i_ctime = CURRENT_TIME; - ip->i_diskflags |= GFS2_DIF_TRUNC_IN_PROG; - gfs2_trans_add_bh(ip->i_gl, dibh, 1); - gfs2_dinode_out(ip, dibh->b_data); + if (newsize & (u64)(sdp->sd_sb.sb_bsize - 1)) { + error = gfs2_block_truncate_page(mapping, newsize); + if (error) + goto out_brelse; } + ip->i_diskflags |= GFS2_DIF_TRUNC_IN_PROG; } - brelse(dibh); + i_size_write(inode, newsize); + ip->i_inode.i_mtime = ip->i_inode.i_ctime = CURRENT_TIME; + gfs2_dinode_out(ip, dibh->b_data); + truncate_pagecache(inode, oldsize, newsize); +out_brelse: + brelse(dibh); out: gfs2_trans_end(sdp); return error; @@ -1123,7 +1050,7 @@ static int trunc_end(struct gfs2_inode *ip) if (error) goto out; - if (!ip->i_disksize) { + if (!i_size_read(&ip->i_inode)) { ip->i_height = 0; ip->i_goal = ip->i_no_addr; gfs2_buffer_clear_tail(dibh, sizeof(struct gfs2_dinode)); @@ -1143,92 +1070,154 @@ out: /** * do_shrink - make a file smaller - * @ip: the inode - * @size: the size to make the file - * @truncator: function to truncate the last partial block + * @inode: the inode + * @oldsize: the current inode size + * @newsize: the size to make the file * - * Called with an exclusive lock on @ip. + * Called with an exclusive lock on @inode. The @size must + * be equal to or smaller than the current inode size. * * Returns: errno */ -static int do_shrink(struct gfs2_inode *ip, u64 size) +static int do_shrink(struct inode *inode, u64 oldsize, u64 newsize) { + struct gfs2_inode *ip = GFS2_I(inode); int error; - error = trunc_start(ip, size); + error = trunc_start(inode, oldsize, newsize); if (error < 0) return error; - if (error > 0) + if (gfs2_is_stuffed(ip)) return 0; - error = trunc_dealloc(ip, size); - if (!error) + error = trunc_dealloc(ip, newsize); + if (error == 0) error = trunc_end(ip); return error; } -static int do_touch(struct gfs2_inode *ip, u64 size) +void gfs2_trim_blocks(struct inode *inode) { - struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode); + u64 size = inode->i_size; + int ret; + + ret = do_shrink(inode, size, size); + WARN_ON(ret != 0); +} + +/** + * do_grow - Touch and update inode size + * @inode: The inode + * @size: The new size + * + * This function updates the timestamps on the inode and + * may also increase the size of the inode. This function + * must not be called with @size any smaller than the current + * inode size. + * + * Although it is not strictly required to unstuff files here, + * earlier versions of GFS2 have a bug in the stuffed file reading + * code which will result in a buffer overrun if the size is larger + * than the max stuffed file size. In order to prevent this from + * occuring, such files are unstuffed, but in other cases we can + * just update the inode size directly. + * + * Returns: 0 on success, or -ve on error + */ + +static int do_grow(struct inode *inode, u64 size) +{ + struct gfs2_inode *ip = GFS2_I(inode); + struct gfs2_sbd *sdp = GFS2_SB(inode); struct buffer_head *dibh; + struct gfs2_alloc *al = NULL; int error; - error = gfs2_trans_begin(sdp, RES_DINODE, 0); + if (gfs2_is_stuffed(ip) && + (size > (sdp->sd_sb.sb_bsize - sizeof(struct gfs2_dinode)))) { + al = gfs2_alloc_get(ip); + if (al == NULL) + return -ENOMEM; + + error = gfs2_quota_lock_check(ip); + if (error) + goto do_grow_alloc_put; + + al->al_requested = 1; + error = gfs2_inplace_reserve(ip); + if (error) + goto do_grow_qunlock; + } + + error = gfs2_trans_begin(sdp, RES_DINODE + RES_STATFS + RES_RG_BIT, 0); if (error) - return error; + goto do_grow_release; - down_write(&ip->i_rw_mutex); + if (al) { + error = gfs2_unstuff_dinode(ip, NULL); + if (error) + goto do_end_trans; + } error = gfs2_meta_inode_buffer(ip, &dibh); if (error) - goto do_touch_out; + goto do_end_trans; + i_size_write(inode, size); ip->i_inode.i_mtime = ip->i_inode.i_ctime = CURRENT_TIME; gfs2_trans_add_bh(ip->i_gl, dibh, 1); gfs2_dinode_out(ip, dibh->b_data); brelse(dibh); -do_touch_out: - up_write(&ip->i_rw_mutex); +do_end_trans: gfs2_trans_end(sdp); +do_grow_release: + if (al) { + gfs2_inplace_release(ip); +do_grow_qunlock: + gfs2_quota_unlock(ip); +do_grow_alloc_put: + gfs2_alloc_put(ip); + } return error; } /** - * gfs2_truncatei - make a file a given size - * @ip: the inode - * @size: the size to make the file - * @truncator: function to truncate the last partial block + * gfs2_setattr_size - make a file a given size + * @inode: the inode + * @newsize: the size to make the file * - * The file size can grow, shrink, or stay the same size. + * The file size can grow, shrink, or stay the same size. This + * is called holding i_mutex and an exclusive glock on the inode + * in question. * * Returns: errno */ -int gfs2_truncatei(struct gfs2_inode *ip, u64 size) +int gfs2_setattr_size(struct inode *inode, u64 newsize) { - int error; + int ret; + u64 oldsize; - if (gfs2_assert_warn(GFS2_SB(&ip->i_inode), S_ISREG(ip->i_inode.i_mode))) - return -EINVAL; + BUG_ON(!S_ISREG(inode->i_mode)); - if (size > ip->i_disksize) - error = do_grow(ip, size); - else if (size < ip->i_disksize) - error = do_shrink(ip, size); - else - /* update time stamps */ - error = do_touch(ip, size); + ret = inode_newsize_ok(inode, newsize); + if (ret) + return ret; - return error; + oldsize = inode->i_size; + if (newsize >= oldsize) + return do_grow(inode, newsize); + + return do_shrink(inode, oldsize, newsize); } int gfs2_truncatei_resume(struct gfs2_inode *ip) { int error; - error = trunc_dealloc(ip, ip->i_disksize); + error = trunc_dealloc(ip, i_size_read(&ip->i_inode)); if (!error) error = trunc_end(ip); return error; @@ -1269,7 +1258,7 @@ int gfs2_write_alloc_required(struct gfs2_inode *ip, u64 offset, shift = sdp->sd_sb.sb_bsize_shift; BUG_ON(gfs2_is_dir(ip)); - end_of_file = (ip->i_disksize + sdp->sd_sb.sb_bsize - 1) >> shift; + end_of_file = (i_size_read(&ip->i_inode) + sdp->sd_sb.sb_bsize - 1) >> shift; lblock = offset >> shift; lblock_stop = (offset + len + sdp->sd_sb.sb_bsize - 1) >> shift; if (lblock_stop > end_of_file) diff --git a/fs/gfs2/bmap.h b/fs/gfs2/bmap.h index a20a5213135a..42fea03e2bd9 100644 --- a/fs/gfs2/bmap.h +++ b/fs/gfs2/bmap.h @@ -44,14 +44,16 @@ static inline void gfs2_write_calc_reserv(const struct gfs2_inode *ip, } } -int gfs2_unstuff_dinode(struct gfs2_inode *ip, struct page *page); -int gfs2_block_map(struct inode *inode, sector_t lblock, struct buffer_head *bh, int create); -int gfs2_extent_map(struct inode *inode, u64 lblock, int *new, u64 *dblock, unsigned *extlen); - -int gfs2_truncatei(struct gfs2_inode *ip, u64 size); -int gfs2_truncatei_resume(struct gfs2_inode *ip); -int gfs2_file_dealloc(struct gfs2_inode *ip); -int gfs2_write_alloc_required(struct gfs2_inode *ip, u64 offset, - unsigned int len); +extern int gfs2_unstuff_dinode(struct gfs2_inode *ip, struct page *page); +extern int gfs2_block_map(struct inode *inode, sector_t lblock, + struct buffer_head *bh, int create); +extern int gfs2_extent_map(struct inode *inode, u64 lblock, int *new, + u64 *dblock, unsigned *extlen); +extern int gfs2_setattr_size(struct inode *inode, u64 size); +extern void gfs2_trim_blocks(struct inode *inode); +extern int gfs2_truncatei_resume(struct gfs2_inode *ip); +extern int gfs2_file_dealloc(struct gfs2_inode *ip); +extern int gfs2_write_alloc_required(struct gfs2_inode *ip, u64 offset, + unsigned int len); #endif /* __BMAP_DOT_H__ */ diff --git a/fs/gfs2/dentry.c b/fs/gfs2/dentry.c index bb7907bde3d8..6798755b3858 100644 --- a/fs/gfs2/dentry.c +++ b/fs/gfs2/dentry.c @@ -49,7 +49,7 @@ static int gfs2_drevalidate(struct dentry *dentry, struct nameidata *nd) ip = GFS2_I(inode); } - if (sdp->sd_args.ar_localcaching) + if (sdp->sd_lockstruct.ls_ops->lm_mount == NULL) goto valid; had_lock = (gfs2_glock_is_locked_by_me(dip->i_gl) != NULL); diff --git a/fs/gfs2/dir.c b/fs/gfs2/dir.c index b9dd88a78dd4..5c356d09c321 100644 --- a/fs/gfs2/dir.c +++ b/fs/gfs2/dir.c @@ -79,6 +79,9 @@ #define gfs2_disk_hash2offset(h) (((u64)(h)) >> 1) #define gfs2_dir_offset2hash(p) ((u32)(((u64)(p)) << 1)) +struct qstr gfs2_qdot __read_mostly; +struct qstr gfs2_qdotdot __read_mostly; + typedef int (*leaf_call_t) (struct gfs2_inode *dip, u32 index, u32 len, u64 leaf_no, void *data); typedef int (*gfs2_dscan_t)(const struct gfs2_dirent *dent, @@ -127,8 +130,8 @@ static int gfs2_dir_write_stuffed(struct gfs2_inode *ip, const char *buf, gfs2_trans_add_bh(ip->i_gl, dibh, 1); memcpy(dibh->b_data + offset + sizeof(struct gfs2_dinode), buf, size); - if (ip->i_disksize < offset + size) - ip->i_disksize = offset + size; + if (ip->i_inode.i_size < offset + size) + i_size_write(&ip->i_inode, offset + size); ip->i_inode.i_mtime = ip->i_inode.i_ctime = CURRENT_TIME; gfs2_dinode_out(ip, dibh->b_data); @@ -225,8 +228,8 @@ out: if (error) return error; - if (ip->i_disksize < offset + copied) - ip->i_disksize = offset + copied; + if (ip->i_inode.i_size < offset + copied) + i_size_write(&ip->i_inode, offset + copied); ip->i_inode.i_mtime = ip->i_inode.i_ctime = CURRENT_TIME; gfs2_trans_add_bh(ip->i_gl, dibh, 1); @@ -275,12 +278,13 @@ static int gfs2_dir_read_data(struct gfs2_inode *ip, char *buf, u64 offset, unsigned int o; int copied = 0; int error = 0; + u64 disksize = i_size_read(&ip->i_inode); - if (offset >= ip->i_disksize) + if (offset >= disksize) return 0; - if (offset + size > ip->i_disksize) - size = ip->i_disksize - offset; + if (offset + size > disksize) + size = disksize - offset; if (!size) return 0; @@ -727,7 +731,7 @@ static struct gfs2_dirent *gfs2_dirent_search(struct inode *inode, unsigned hsize = 1 << ip->i_depth; unsigned index; u64 ln; - if (hsize * sizeof(u64) != ip->i_disksize) { + if (hsize * sizeof(u64) != i_size_read(inode)) { gfs2_consist_inode(ip); return ERR_PTR(-EIO); } @@ -879,7 +883,7 @@ static int dir_make_exhash(struct inode *inode) for (x = sdp->sd_hash_ptrs; x--; lp++) *lp = cpu_to_be64(bn); - dip->i_disksize = sdp->sd_sb.sb_bsize / 2; + i_size_write(inode, sdp->sd_sb.sb_bsize / 2); gfs2_add_inode_blocks(&dip->i_inode, 1); dip->i_diskflags |= GFS2_DIF_EXHASH; @@ -1057,11 +1061,12 @@ static int dir_double_exhash(struct gfs2_inode *dip) u64 *buf; u64 *from, *to; u64 block; + u64 disksize = i_size_read(&dip->i_inode); int x; int error = 0; hsize = 1 << dip->i_depth; - if (hsize * sizeof(u64) != dip->i_disksize) { + if (hsize * sizeof(u64) != disksize) { gfs2_consist_inode(dip); return -EIO; } @@ -1072,7 +1077,7 @@ static int dir_double_exhash(struct gfs2_inode *dip) if (!buf) return -ENOMEM; - for (block = dip->i_disksize >> sdp->sd_hash_bsize_shift; block--;) { + for (block = disksize >> sdp->sd_hash_bsize_shift; block--;) { error = gfs2_dir_read_data(dip, (char *)buf, block * sdp->sd_hash_bsize, sdp->sd_hash_bsize, 1); @@ -1370,7 +1375,7 @@ static int dir_e_read(struct inode *inode, u64 *offset, void *opaque, unsigned depth = 0; hsize = 1 << dip->i_depth; - if (hsize * sizeof(u64) != dip->i_disksize) { + if (hsize * sizeof(u64) != i_size_read(inode)) { gfs2_consist_inode(dip); return -EIO; } @@ -1784,7 +1789,7 @@ static int foreach_leaf(struct gfs2_inode *dip, leaf_call_t lc, void *data) int error = 0; hsize = 1 << dip->i_depth; - if (hsize * sizeof(u64) != dip->i_disksize) { + if (hsize * sizeof(u64) != i_size_read(&dip->i_inode)) { gfs2_consist_inode(dip); return -EIO; } diff --git a/fs/gfs2/dir.h b/fs/gfs2/dir.h index 4f919440c3be..a98f644bd3df 100644 --- a/fs/gfs2/dir.h +++ b/fs/gfs2/dir.h @@ -17,23 +17,24 @@ struct inode; struct gfs2_inode; struct gfs2_inum; -struct inode *gfs2_dir_search(struct inode *dir, const struct qstr *filename); -int gfs2_dir_check(struct inode *dir, const struct qstr *filename, - const struct gfs2_inode *ip); -int gfs2_dir_add(struct inode *inode, const struct qstr *filename, - const struct gfs2_inode *ip, unsigned int type); -int gfs2_dir_del(struct gfs2_inode *dip, const struct qstr *filename); -int gfs2_dir_read(struct inode *inode, u64 *offset, void *opaque, - filldir_t filldir); -int gfs2_dir_mvino(struct gfs2_inode *dip, const struct qstr *filename, - const struct gfs2_inode *nip, unsigned int new_type); +extern struct inode *gfs2_dir_search(struct inode *dir, + const struct qstr *filename); +extern int gfs2_dir_check(struct inode *dir, const struct qstr *filename, + const struct gfs2_inode *ip); +extern int gfs2_dir_add(struct inode *inode, const struct qstr *filename, + const struct gfs2_inode *ip, unsigned int type); +extern int gfs2_dir_del(struct gfs2_inode *dip, const struct qstr *filename); +extern int gfs2_dir_read(struct inode *inode, u64 *offset, void *opaque, + filldir_t filldir); +extern int gfs2_dir_mvino(struct gfs2_inode *dip, const struct qstr *filename, + const struct gfs2_inode *nip, unsigned int new_type); -int gfs2_dir_exhash_dealloc(struct gfs2_inode *dip); +extern int gfs2_dir_exhash_dealloc(struct gfs2_inode *dip); -int gfs2_diradd_alloc_required(struct inode *dir, - const struct qstr *filename); -int gfs2_dir_get_new_buffer(struct gfs2_inode *ip, u64 block, - struct buffer_head **bhp); +extern int gfs2_diradd_alloc_required(struct inode *dir, + const struct qstr *filename); +extern int gfs2_dir_get_new_buffer(struct gfs2_inode *ip, u64 block, + struct buffer_head **bhp); static inline u32 gfs2_disk_hash(const char *data, int len) { @@ -61,4 +62,7 @@ static inline void gfs2_qstr2dirent(const struct qstr *name, u16 reclen, struct memcpy(dent + 1, name->name, name->len); } +extern struct qstr gfs2_qdot; +extern struct qstr gfs2_qdotdot; + #endif /* __DIR_DOT_H__ */ diff --git a/fs/gfs2/export.c b/fs/gfs2/export.c index dfe237a3f8ad..06d582732d34 100644 --- a/fs/gfs2/export.c +++ b/fs/gfs2/export.c @@ -126,16 +126,9 @@ static int gfs2_get_name(struct dentry *parent, char *name, static struct dentry *gfs2_get_parent(struct dentry *child) { - struct qstr dotdot; struct dentry *dentry; - /* - * XXX(hch): it would be a good idea to keep this around as a - * static variable. - */ - gfs2_str2qstr(&dotdot, ".."); - - dentry = d_obtain_alias(gfs2_lookupi(child->d_inode, &dotdot, 1)); + dentry = d_obtain_alias(gfs2_lookupi(child->d_inode, &gfs2_qdotdot, 1)); if (!IS_ERR(dentry)) dentry->d_op = &gfs2_dops; return dentry; diff --git a/fs/gfs2/file.c b/fs/gfs2/file.c index 4edd662c8232..237ee6a940df 100644 --- a/fs/gfs2/file.c +++ b/fs/gfs2/file.c @@ -382,8 +382,10 @@ static int gfs2_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf) rblocks = RES_DINODE + ind_blocks; if (gfs2_is_jdata(ip)) rblocks += data_blocks ? data_blocks : 1; - if (ind_blocks || data_blocks) + if (ind_blocks || data_blocks) { rblocks += RES_STATFS + RES_QUOTA; + rblocks += gfs2_rg_blocks(al); + } ret = gfs2_trans_begin(sdp, rblocks, 0); if (ret) goto out_trans_fail; @@ -491,7 +493,7 @@ static int gfs2_open(struct inode *inode, struct file *file) goto fail; if (!(file->f_flags & O_LARGEFILE) && - ip->i_disksize > MAX_NON_LFS) { + i_size_read(inode) > MAX_NON_LFS) { error = -EOVERFLOW; goto fail_gunlock; } diff --git a/fs/gfs2/glock.c b/fs/gfs2/glock.c index 9adf8f924e08..87778857f099 100644 --- a/fs/gfs2/glock.c +++ b/fs/gfs2/glock.c @@ -441,6 +441,8 @@ static void state_change(struct gfs2_glock *gl, unsigned int new_state) else gfs2_glock_put_nolock(gl); } + if (held1 && held2 && list_empty(&gl->gl_holders)) + clear_bit(GLF_QUEUED, &gl->gl_flags); gl->gl_state = new_state; gl->gl_tchange = jiffies; @@ -1012,6 +1014,7 @@ fail: if (unlikely((gh->gh_flags & LM_FLAG_PRIORITY) && !insert_pt)) insert_pt = &gh2->gh_list; } + set_bit(GLF_QUEUED, &gl->gl_flags); if (likely(insert_pt == NULL)) { list_add_tail(&gh->gh_list, &gl->gl_holders); if (unlikely(gh->gh_flags & LM_FLAG_PRIORITY)) @@ -1310,10 +1313,12 @@ void gfs2_glock_cb(struct gfs2_glock *gl, unsigned int state) gfs2_glock_hold(gl); holdtime = gl->gl_tchange + gl->gl_ops->go_min_hold_time; - if (time_before(now, holdtime)) - delay = holdtime - now; - if (test_bit(GLF_REPLY_PENDING, &gl->gl_flags)) - delay = gl->gl_ops->go_min_hold_time; + if (test_bit(GLF_QUEUED, &gl->gl_flags)) { + if (time_before(now, holdtime)) + delay = holdtime - now; + if (test_bit(GLF_REPLY_PENDING, &gl->gl_flags)) + delay = gl->gl_ops->go_min_hold_time; + } spin_lock(&gl->gl_spin); handle_callback(gl, state, delay); @@ -1512,7 +1517,7 @@ static void clear_glock(struct gfs2_glock *gl) spin_unlock(&lru_lock); spin_lock(&gl->gl_spin); - if (find_first_holder(gl) == NULL && gl->gl_state != LM_ST_UNLOCKED) + if (gl->gl_state != LM_ST_UNLOCKED) handle_callback(gl, LM_ST_UNLOCKED, 0); spin_unlock(&gl->gl_spin); gfs2_glock_hold(gl); @@ -1660,6 +1665,8 @@ static const char *gflags2str(char *buf, const unsigned long *gflags) *p++ = 'I'; if (test_bit(GLF_FROZEN, gflags)) *p++ = 'F'; + if (test_bit(GLF_QUEUED, gflags)) + *p++ = 'q'; *p = 0; return buf; } @@ -1776,10 +1783,12 @@ int __init gfs2_glock_init(void) } #endif - glock_workqueue = create_workqueue("glock_workqueue"); + glock_workqueue = alloc_workqueue("glock_workqueue", WQ_RESCUER | + WQ_HIGHPRI | WQ_FREEZEABLE, 0); if (IS_ERR(glock_workqueue)) return PTR_ERR(glock_workqueue); - gfs2_delete_workqueue = create_workqueue("delete_workqueue"); + gfs2_delete_workqueue = alloc_workqueue("delete_workqueue", WQ_RESCUER | + WQ_FREEZEABLE, 0); if (IS_ERR(gfs2_delete_workqueue)) { destroy_workqueue(glock_workqueue); return PTR_ERR(gfs2_delete_workqueue); diff --git a/fs/gfs2/glock.h b/fs/gfs2/glock.h index 2bda1911b156..db1c26d6d220 100644 --- a/fs/gfs2/glock.h +++ b/fs/gfs2/glock.h @@ -215,7 +215,7 @@ void gfs2_glock_dq_uninit_m(unsigned int num_gh, struct gfs2_holder *ghs); void gfs2_print_dbg(struct seq_file *seq, const char *fmt, ...); /** - * gfs2_glock_nq_init - intialize a holder and enqueue it on a glock + * gfs2_glock_nq_init - initialize a holder and enqueue it on a glock * @gl: the glock * @state: the state we're requesting * @flags: the modifier flags diff --git a/fs/gfs2/glops.c b/fs/gfs2/glops.c index 49f97d3bb690..0d149dcc04e5 100644 --- a/fs/gfs2/glops.c +++ b/fs/gfs2/glops.c @@ -262,13 +262,12 @@ static int inode_go_dump(struct seq_file *seq, const struct gfs2_glock *gl) const struct gfs2_inode *ip = gl->gl_object; if (ip == NULL) return 0; - gfs2_print_dbg(seq, " I: n:%llu/%llu t:%u f:0x%02lx d:0x%08x s:%llu/%llu\n", + gfs2_print_dbg(seq, " I: n:%llu/%llu t:%u f:0x%02lx d:0x%08x s:%llu\n", (unsigned long long)ip->i_no_formal_ino, (unsigned long long)ip->i_no_addr, IF2DT(ip->i_inode.i_mode), ip->i_flags, (unsigned int)ip->i_diskflags, - (unsigned long long)ip->i_inode.i_size, - (unsigned long long)ip->i_disksize); + (unsigned long long)i_size_read(&ip->i_inode)); return 0; } @@ -453,7 +452,6 @@ const struct gfs2_glock_operations *gfs2_glops_list[] = { [LM_TYPE_META] = &gfs2_meta_glops, [LM_TYPE_INODE] = &gfs2_inode_glops, [LM_TYPE_RGRP] = &gfs2_rgrp_glops, - [LM_TYPE_NONDISK] = &gfs2_trans_glops, [LM_TYPE_IOPEN] = &gfs2_iopen_glops, [LM_TYPE_FLOCK] = &gfs2_flock_glops, [LM_TYPE_NONDISK] = &gfs2_nondisk_glops, diff --git a/fs/gfs2/incore.h b/fs/gfs2/incore.h index fdbf4b366fa5..764fbb49efc8 100644 --- a/fs/gfs2/incore.h +++ b/fs/gfs2/incore.h @@ -196,6 +196,7 @@ enum { GLF_REPLY_PENDING = 9, GLF_INITIAL = 10, GLF_FROZEN = 11, + GLF_QUEUED = 12, }; struct gfs2_glock { @@ -267,7 +268,6 @@ struct gfs2_inode { u64 i_no_formal_ino; u64 i_generation; u64 i_eattr; - loff_t i_disksize; unsigned long i_flags; /* GIF_... */ struct gfs2_glock *i_gl; /* Move into i_gh? */ struct gfs2_holder i_iopen_gh; @@ -416,11 +416,8 @@ struct gfs2_args { char ar_locktable[GFS2_LOCKNAME_LEN]; /* Name of the Lock Table */ char ar_hostdata[GFS2_LOCKNAME_LEN]; /* Host specific data */ unsigned int ar_spectator:1; /* Don't get a journal */ - unsigned int ar_ignore_local_fs:1; /* Ignore optimisations */ unsigned int ar_localflocks:1; /* Let the VFS do flock|fcntl */ - unsigned int ar_localcaching:1; /* Local caching */ unsigned int ar_debug:1; /* Oops on errors */ - unsigned int ar_upgrade:1; /* Upgrade ondisk format */ unsigned int ar_posix_acl:1; /* Enable posix acls */ unsigned int ar_quota:2; /* off/account/on */ unsigned int ar_suiddir:1; /* suiddir support */ @@ -497,7 +494,7 @@ struct gfs2_sb_host { */ struct lm_lockstruct { - unsigned int ls_jid; + int ls_jid; unsigned int ls_first; unsigned int ls_first_done; unsigned int ls_nodir; @@ -572,6 +569,7 @@ struct gfs2_sbd { struct list_head sd_rindex_mru_list; struct gfs2_rgrpd *sd_rindex_forward; unsigned int sd_rgrps; + unsigned int sd_max_rg_data; /* Journal index stuff */ diff --git a/fs/gfs2/inode.c b/fs/gfs2/inode.c index 08140f185a37..06370f8bd8cf 100644 --- a/fs/gfs2/inode.c +++ b/fs/gfs2/inode.c @@ -359,8 +359,7 @@ static int gfs2_dinode_in(struct gfs2_inode *ip, const void *buf) * to do that. */ ip->i_inode.i_nlink = be32_to_cpu(str->di_nlink); - ip->i_disksize = be64_to_cpu(str->di_size); - i_size_write(&ip->i_inode, ip->i_disksize); + i_size_write(&ip->i_inode, be64_to_cpu(str->di_size)); gfs2_set_inode_blocks(&ip->i_inode, be64_to_cpu(str->di_blocks)); atime.tv_sec = be64_to_cpu(str->di_atime); atime.tv_nsec = be32_to_cpu(str->di_atime_nsec); @@ -1055,7 +1054,7 @@ void gfs2_dinode_out(const struct gfs2_inode *ip, void *buf) str->di_uid = cpu_to_be32(ip->i_inode.i_uid); str->di_gid = cpu_to_be32(ip->i_inode.i_gid); str->di_nlink = cpu_to_be32(ip->i_inode.i_nlink); - str->di_size = cpu_to_be64(ip->i_disksize); + str->di_size = cpu_to_be64(i_size_read(&ip->i_inode)); str->di_blocks = cpu_to_be64(gfs2_get_inode_blocks(&ip->i_inode)); str->di_atime = cpu_to_be64(ip->i_inode.i_atime.tv_sec); str->di_mtime = cpu_to_be64(ip->i_inode.i_mtime.tv_sec); @@ -1085,8 +1084,8 @@ void gfs2_dinode_print(const struct gfs2_inode *ip) (unsigned long long)ip->i_no_formal_ino); printk(KERN_INFO " no_addr = %llu\n", (unsigned long long)ip->i_no_addr); - printk(KERN_INFO " i_disksize = %llu\n", - (unsigned long long)ip->i_disksize); + printk(KERN_INFO " i_size = %llu\n", + (unsigned long long)i_size_read(&ip->i_inode)); printk(KERN_INFO " blocks = %llu\n", (unsigned long long)gfs2_get_inode_blocks(&ip->i_inode)); printk(KERN_INFO " i_goal = %llu\n", diff --git a/fs/gfs2/inode.h b/fs/gfs2/inode.h index 300ada3f21de..6720d7d5fbc6 100644 --- a/fs/gfs2/inode.h +++ b/fs/gfs2/inode.h @@ -19,6 +19,8 @@ extern int gfs2_releasepage(struct page *page, gfp_t gfp_mask); extern int gfs2_internal_read(struct gfs2_inode *ip, struct file_ra_state *ra_state, char *buf, loff_t *pos, unsigned size); +extern void gfs2_page_add_databufs(struct gfs2_inode *ip, struct page *page, + unsigned int from, unsigned int to); extern void gfs2_set_aops(struct inode *inode); static inline int gfs2_is_stuffed(const struct gfs2_inode *ip) @@ -80,6 +82,19 @@ static inline void gfs2_inum_out(const struct gfs2_inode *ip, dent->de_inum.no_addr = cpu_to_be64(ip->i_no_addr); } +static inline int gfs2_check_internal_file_size(struct inode *inode, + u64 minsize, u64 maxsize) +{ + u64 size = i_size_read(inode); + if (size < minsize || size > maxsize) + goto err; + if (size & ((1 << inode->i_blkbits) - 1)) + goto err; + return 0; +err: + gfs2_consist_inode(GFS2_I(inode)); + return -EIO; +} extern void gfs2_set_iop(struct inode *inode); extern struct inode *gfs2_inode_lookup(struct super_block *sb, unsigned type, diff --git a/fs/gfs2/lock_dlm.c b/fs/gfs2/lock_dlm.c index 0e0470ed34c2..1c09425b45fd 100644 --- a/fs/gfs2/lock_dlm.c +++ b/fs/gfs2/lock_dlm.c @@ -42,9 +42,9 @@ static void gdlm_ast(void *arg) ret |= LM_OUT_CANCELED; goto out; case -EAGAIN: /* Try lock fails */ + case -EDEADLK: /* Deadlock detected */ goto out; - case -EINVAL: /* Invalid */ - case -ENOMEM: /* Out of memory */ + case -ETIMEDOUT: /* Canceled due to timeout */ ret |= LM_OUT_ERROR; goto out; case 0: /* Success */ diff --git a/fs/gfs2/main.c b/fs/gfs2/main.c index b1e9630eb46a..d7eb1e209aa8 100644 --- a/fs/gfs2/main.c +++ b/fs/gfs2/main.c @@ -24,6 +24,7 @@ #include "glock.h" #include "quota.h" #include "recovery.h" +#include "dir.h" static struct shrinker qd_shrinker = { .shrink = gfs2_shrink_qd_memory, @@ -78,6 +79,9 @@ static int __init init_gfs2_fs(void) { int error; + gfs2_str2qstr(&gfs2_qdot, "."); + gfs2_str2qstr(&gfs2_qdotdot, ".."); + error = gfs2_sys_init(); if (error) return error; @@ -140,7 +144,7 @@ static int __init init_gfs2_fs(void) error = -ENOMEM; gfs_recovery_wq = alloc_workqueue("gfs_recovery", - WQ_NON_REENTRANT | WQ_RESCUER, 0); + WQ_RESCUER | WQ_FREEZEABLE, 0); if (!gfs_recovery_wq) goto fail_wq; diff --git a/fs/gfs2/ops_fstype.c b/fs/gfs2/ops_fstype.c index 4d4b1e8ac64c..aeafc233dc89 100644 --- a/fs/gfs2/ops_fstype.c +++ b/fs/gfs2/ops_fstype.c @@ -38,14 +38,6 @@ #define DO 0 #define UNDO 1 -static const u32 gfs2_old_fs_formats[] = { - 0 -}; - -static const u32 gfs2_old_multihost_formats[] = { - 0 -}; - /** * gfs2_tune_init - Fill a gfs2_tune structure with default values * @gt: tune @@ -135,8 +127,6 @@ static struct gfs2_sbd *init_sbd(struct super_block *sb) static int gfs2_check_sb(struct gfs2_sbd *sdp, struct gfs2_sb_host *sb, int silent) { - unsigned int x; - if (sb->sb_magic != GFS2_MAGIC || sb->sb_type != GFS2_METATYPE_SB) { if (!silent) @@ -150,55 +140,9 @@ static int gfs2_check_sb(struct gfs2_sbd *sdp, struct gfs2_sb_host *sb, int sile sb->sb_multihost_format == GFS2_FORMAT_MULTI) return 0; - if (sb->sb_fs_format != GFS2_FORMAT_FS) { - for (x = 0; gfs2_old_fs_formats[x]; x++) - if (gfs2_old_fs_formats[x] == sb->sb_fs_format) - break; + fs_warn(sdp, "Unknown on-disk format, unable to mount\n"); - if (!gfs2_old_fs_formats[x]) { - printk(KERN_WARNING - "GFS2: code version (%u, %u) is incompatible " - "with ondisk format (%u, %u)\n", - GFS2_FORMAT_FS, GFS2_FORMAT_MULTI, - sb->sb_fs_format, sb->sb_multihost_format); - printk(KERN_WARNING - "GFS2: I don't know how to upgrade this FS\n"); - return -EINVAL; - } - } - - if (sb->sb_multihost_format != GFS2_FORMAT_MULTI) { - for (x = 0; gfs2_old_multihost_formats[x]; x++) - if (gfs2_old_multihost_formats[x] == - sb->sb_multihost_format) - break; - - if (!gfs2_old_multihost_formats[x]) { - printk(KERN_WARNING - "GFS2: code version (%u, %u) is incompatible " - "with ondisk format (%u, %u)\n", - GFS2_FORMAT_FS, GFS2_FORMAT_MULTI, - sb->sb_fs_format, sb->sb_multihost_format); - printk(KERN_WARNING - "GFS2: I don't know how to upgrade this FS\n"); - return -EINVAL; - } - } - - if (!sdp->sd_args.ar_upgrade) { - printk(KERN_WARNING - "GFS2: code version (%u, %u) is incompatible " - "with ondisk format (%u, %u)\n", - GFS2_FORMAT_FS, GFS2_FORMAT_MULTI, - sb->sb_fs_format, sb->sb_multihost_format); - printk(KERN_INFO - "GFS2: Use the \"upgrade\" mount option to upgrade " - "the FS\n"); - printk(KERN_INFO "GFS2: See the manual for more details\n"); - return -EINVAL; - } - - return 0; + return -EINVAL; } static void end_bio_io_page(struct bio *bio, int error) @@ -586,7 +530,7 @@ static int map_journal_extents(struct gfs2_sbd *sdp) prev_db = 0; - for (lb = 0; lb < ip->i_disksize >> sdp->sd_sb.sb_bsize_shift; lb++) { + for (lb = 0; lb < i_size_read(jd->jd_inode) >> sdp->sd_sb.sb_bsize_shift; lb++) { bh.b_state = 0; bh.b_blocknr = 0; bh.b_size = 1 << ip->i_inode.i_blkbits; @@ -1022,7 +966,6 @@ static int gfs2_lm_mount(struct gfs2_sbd *sdp, int silent) if (!strcmp("lock_nolock", proto)) { lm = &nolock_ops; sdp->sd_args.ar_localflocks = 1; - sdp->sd_args.ar_localcaching = 1; #ifdef CONFIG_GFS2_FS_LOCKING_DLM } else if (!strcmp("lock_dlm", proto)) { lm = &gfs2_dlm_ops; @@ -1113,8 +1056,6 @@ static int gfs2_journalid_wait(void *word) static int wait_on_journal(struct gfs2_sbd *sdp) { - if (sdp->sd_args.ar_spectator) - return 0; if (sdp->sd_lockstruct.ls_ops->lm_mount == NULL) return 0; @@ -1217,6 +1158,20 @@ static int fill_super(struct super_block *sb, struct gfs2_args *args, int silent if (error) goto fail_sb; + /* + * If user space has failed to join the cluster or some similar + * failure has occurred, then the journal id will contain a + * negative (error) number. This will then be returned to the + * caller (of the mount syscall). We do this even for spectator + * mounts (which just write a jid of 0 to indicate "ok" even though + * the jid is unused in the spectator case) + */ + if (sdp->sd_lockstruct.ls_jid < 0) { + error = sdp->sd_lockstruct.ls_jid; + sdp->sd_lockstruct.ls_jid = 0; + goto fail_sb; + } + error = init_inodes(sdp, DO); if (error) goto fail_sb; diff --git a/fs/gfs2/ops_inode.c b/fs/gfs2/ops_inode.c index 1009be2c9737..0534510200d5 100644 --- a/fs/gfs2/ops_inode.c +++ b/fs/gfs2/ops_inode.c @@ -18,6 +18,8 @@ #include <linux/gfs2_ondisk.h> #include <linux/crc32.h> #include <linux/fiemap.h> +#include <linux/swap.h> +#include <linux/falloc.h> #include <asm/uaccess.h> #include "gfs2.h" @@ -217,7 +219,7 @@ static int gfs2_link(struct dentry *old_dentry, struct inode *dir, goto out_gunlock_q; error = gfs2_trans_begin(sdp, sdp->sd_max_dirres + - al->al_rgd->rd_length + + gfs2_rg_blocks(al) + 2 * RES_DINODE + RES_STATFS + RES_QUOTA, 0); if (error) @@ -406,7 +408,6 @@ static int gfs2_symlink(struct inode *dir, struct dentry *dentry, ip = ghs[1].gh_gl->gl_object; - ip->i_disksize = size; i_size_write(inode, size); error = gfs2_meta_inode_buffer(ip, &dibh); @@ -461,7 +462,7 @@ static int gfs2_mkdir(struct inode *dir, struct dentry *dentry, int mode) ip = ghs[1].gh_gl->gl_object; ip->i_inode.i_nlink = 2; - ip->i_disksize = sdp->sd_sb.sb_bsize - sizeof(struct gfs2_dinode); + i_size_write(inode, sdp->sd_sb.sb_bsize - sizeof(struct gfs2_dinode)); ip->i_diskflags |= GFS2_DIF_JDATA; ip->i_entries = 2; @@ -470,18 +471,15 @@ static int gfs2_mkdir(struct inode *dir, struct dentry *dentry, int mode) if (!gfs2_assert_withdraw(sdp, !error)) { struct gfs2_dinode *di = (struct gfs2_dinode *)dibh->b_data; struct gfs2_dirent *dent = (struct gfs2_dirent *)(di+1); - struct qstr str; - gfs2_str2qstr(&str, "."); gfs2_trans_add_bh(ip->i_gl, dibh, 1); - gfs2_qstr2dirent(&str, GFS2_DIRENT_SIZE(str.len), dent); + gfs2_qstr2dirent(&gfs2_qdot, GFS2_DIRENT_SIZE(gfs2_qdot.len), dent); dent->de_inum = di->di_num; /* already GFS2 endian */ dent->de_type = cpu_to_be16(DT_DIR); di->di_entries = cpu_to_be32(1); - gfs2_str2qstr(&str, ".."); dent = (struct gfs2_dirent *)((char*)dent + GFS2_DIRENT_SIZE(1)); - gfs2_qstr2dirent(&str, dibh->b_size - GFS2_DIRENT_SIZE(1) - sizeof(struct gfs2_dinode), dent); + gfs2_qstr2dirent(&gfs2_qdotdot, dibh->b_size - GFS2_DIRENT_SIZE(1) - sizeof(struct gfs2_dinode), dent); gfs2_inum_out(dip, dent); dent->de_type = cpu_to_be16(DT_DIR); @@ -522,7 +520,6 @@ static int gfs2_mkdir(struct inode *dir, struct dentry *dentry, int mode) static int gfs2_rmdiri(struct gfs2_inode *dip, const struct qstr *name, struct gfs2_inode *ip) { - struct qstr dotname; int error; if (ip->i_entries != 2) { @@ -539,13 +536,11 @@ static int gfs2_rmdiri(struct gfs2_inode *dip, const struct qstr *name, if (error) return error; - gfs2_str2qstr(&dotname, "."); - error = gfs2_dir_del(ip, &dotname); + error = gfs2_dir_del(ip, &gfs2_qdot); if (error) return error; - gfs2_str2qstr(&dotname, ".."); - error = gfs2_dir_del(ip, &dotname); + error = gfs2_dir_del(ip, &gfs2_qdotdot); if (error) return error; @@ -694,11 +689,8 @@ static int gfs2_ok_to_move(struct gfs2_inode *this, struct gfs2_inode *to) struct inode *dir = &to->i_inode; struct super_block *sb = dir->i_sb; struct inode *tmp; - struct qstr dotdot; int error = 0; - gfs2_str2qstr(&dotdot, ".."); - igrab(dir); for (;;) { @@ -711,7 +703,7 @@ static int gfs2_ok_to_move(struct gfs2_inode *this, struct gfs2_inode *to) break; } - tmp = gfs2_lookupi(dir, &dotdot, 1); + tmp = gfs2_lookupi(dir, &gfs2_qdotdot, 1); if (IS_ERR(tmp)) { error = PTR_ERR(tmp); break; @@ -744,7 +736,7 @@ static int gfs2_rename(struct inode *odir, struct dentry *odentry, struct gfs2_inode *ip = GFS2_I(odentry->d_inode); struct gfs2_inode *nip = NULL; struct gfs2_sbd *sdp = GFS2_SB(odir); - struct gfs2_holder ghs[5], r_gh = { .gh_gl = NULL, }; + struct gfs2_holder ghs[5], r_gh = { .gh_gl = NULL, }, ri_gh; struct gfs2_rgrpd *nrgd; unsigned int num_gh; int dir_rename = 0; @@ -758,6 +750,9 @@ static int gfs2_rename(struct inode *odir, struct dentry *odentry, return 0; } + error = gfs2_rindex_hold(sdp, &ri_gh); + if (error) + return error; if (odip != ndip) { error = gfs2_glock_nq_init(sdp->sd_rename_gl, LM_ST_EXCLUSIVE, @@ -887,12 +882,12 @@ static int gfs2_rename(struct inode *odir, struct dentry *odentry, al->al_requested = sdp->sd_max_dirres; - error = gfs2_inplace_reserve(ndip); + error = gfs2_inplace_reserve_ri(ndip); if (error) goto out_gunlock_q; error = gfs2_trans_begin(sdp, sdp->sd_max_dirres + - al->al_rgd->rd_length + + gfs2_rg_blocks(al) + 4 * RES_DINODE + 4 * RES_LEAF + RES_STATFS + RES_QUOTA + 4, 0); if (error) @@ -920,9 +915,6 @@ static int gfs2_rename(struct inode *odir, struct dentry *odentry, } if (dir_rename) { - struct qstr name; - gfs2_str2qstr(&name, ".."); - error = gfs2_change_nlink(ndip, +1); if (error) goto out_end_trans; @@ -930,7 +922,7 @@ static int gfs2_rename(struct inode *odir, struct dentry *odentry, if (error) goto out_end_trans; - error = gfs2_dir_mvino(ip, &name, ndip, DT_DIR); + error = gfs2_dir_mvino(ip, &gfs2_qdotdot, ndip, DT_DIR); if (error) goto out_end_trans; } else { @@ -972,6 +964,7 @@ out_gunlock_r: if (r_gh.gh_gl) gfs2_glock_dq_uninit(&r_gh); out: + gfs2_glock_dq_uninit(&ri_gh); return error; } @@ -990,7 +983,7 @@ static void *gfs2_follow_link(struct dentry *dentry, struct nameidata *nd) struct gfs2_inode *ip = GFS2_I(dentry->d_inode); struct gfs2_holder i_gh; struct buffer_head *dibh; - unsigned int x; + unsigned int x, size; char *buf; int error; @@ -1002,7 +995,8 @@ static void *gfs2_follow_link(struct dentry *dentry, struct nameidata *nd) return NULL; } - if (!ip->i_disksize) { + size = (unsigned int)i_size_read(&ip->i_inode); + if (size == 0) { gfs2_consist_inode(ip); buf = ERR_PTR(-EIO); goto out; @@ -1014,7 +1008,7 @@ static void *gfs2_follow_link(struct dentry *dentry, struct nameidata *nd) goto out; } - x = ip->i_disksize + 1; + x = size + 1; buf = kmalloc(x, GFP_NOFS); if (!buf) buf = ERR_PTR(-ENOMEM); @@ -1071,30 +1065,6 @@ int gfs2_permission(struct inode *inode, int mask) return error; } -/* - * XXX(truncate): the truncate_setsize calls should be moved to the end. - */ -static int setattr_size(struct inode *inode, struct iattr *attr) -{ - struct gfs2_inode *ip = GFS2_I(inode); - struct gfs2_sbd *sdp = GFS2_SB(inode); - int error; - - if (attr->ia_size != ip->i_disksize) { - error = gfs2_trans_begin(sdp, 0, sdp->sd_jdesc->jd_blocks); - if (error) - return error; - truncate_setsize(inode, attr->ia_size); - gfs2_trans_end(sdp); - } - - error = gfs2_truncatei(ip, attr->ia_size); - if (error && (inode->i_size != ip->i_disksize)) - i_size_write(inode, ip->i_disksize); - - return error; -} - static int setattr_chown(struct inode *inode, struct iattr *attr) { struct gfs2_inode *ip = GFS2_I(inode); @@ -1195,7 +1165,7 @@ static int gfs2_setattr(struct dentry *dentry, struct iattr *attr) goto out; if (attr->ia_valid & ATTR_SIZE) - error = setattr_size(inode, attr); + error = gfs2_setattr_size(inode, attr->ia_size); else if (attr->ia_valid & (ATTR_UID | ATTR_GID)) error = setattr_chown(inode, attr); else if ((attr->ia_valid & ATTR_MODE) && IS_POSIXACL(inode)) @@ -1301,6 +1271,257 @@ static int gfs2_removexattr(struct dentry *dentry, const char *name) return ret; } +static void empty_write_end(struct page *page, unsigned from, + unsigned to) +{ + struct gfs2_inode *ip = GFS2_I(page->mapping->host); + + page_zero_new_buffers(page, from, to); + flush_dcache_page(page); + mark_page_accessed(page); + + if (!gfs2_is_writeback(ip)) + gfs2_page_add_databufs(ip, page, from, to); + + block_commit_write(page, from, to); +} + + +static int write_empty_blocks(struct page *page, unsigned from, unsigned to) +{ + unsigned start, end, next; + struct buffer_head *bh, *head; + int error; + + if (!page_has_buffers(page)) { + error = block_prepare_write(page, from, to, gfs2_block_map); + if (unlikely(error)) + return error; + + empty_write_end(page, from, to); + return 0; + } + + bh = head = page_buffers(page); + next = end = 0; + while (next < from) { + next += bh->b_size; + bh = bh->b_this_page; + } + start = next; + do { + next += bh->b_size; + if (buffer_mapped(bh)) { + if (end) { + error = block_prepare_write(page, start, end, + gfs2_block_map); + if (unlikely(error)) + return error; + empty_write_end(page, start, end); + end = 0; + } + start = next; + } + else + end = next; + bh = bh->b_this_page; + } while (next < to); + + if (end) { + error = block_prepare_write(page, start, end, gfs2_block_map); + if (unlikely(error)) + return error; + empty_write_end(page, start, end); + } + + return 0; +} + +static int fallocate_chunk(struct inode *inode, loff_t offset, loff_t len, + int mode) +{ + struct gfs2_inode *ip = GFS2_I(inode); + struct buffer_head *dibh; + int error; + u64 start = offset >> PAGE_CACHE_SHIFT; + unsigned int start_offset = offset & ~PAGE_CACHE_MASK; + u64 end = (offset + len - 1) >> PAGE_CACHE_SHIFT; + pgoff_t curr; + struct page *page; + unsigned int end_offset = (offset + len) & ~PAGE_CACHE_MASK; + unsigned int from, to; + + if (!end_offset) + end_offset = PAGE_CACHE_SIZE; + + error = gfs2_meta_inode_buffer(ip, &dibh); + if (unlikely(error)) + goto out; + + gfs2_trans_add_bh(ip->i_gl, dibh, 1); + + if (gfs2_is_stuffed(ip)) { + error = gfs2_unstuff_dinode(ip, NULL); + if (unlikely(error)) + goto out; + } + + curr = start; + offset = start << PAGE_CACHE_SHIFT; + from = start_offset; + to = PAGE_CACHE_SIZE; + while (curr <= end) { + page = grab_cache_page_write_begin(inode->i_mapping, curr, + AOP_FLAG_NOFS); + if (unlikely(!page)) { + error = -ENOMEM; + goto out; + } + + if (curr == end) + to = end_offset; + error = write_empty_blocks(page, from, to); + if (!error && offset + to > inode->i_size && + !(mode & FALLOC_FL_KEEP_SIZE)) { + i_size_write(inode, offset + to); + } + unlock_page(page); + page_cache_release(page); + if (error) + goto out; + curr++; + offset += PAGE_CACHE_SIZE; + from = 0; + } + + gfs2_dinode_out(ip, dibh->b_data); + mark_inode_dirty(inode); + + brelse(dibh); + +out: + return error; +} + +static void calc_max_reserv(struct gfs2_inode *ip, loff_t max, loff_t *len, + unsigned int *data_blocks, unsigned int *ind_blocks) +{ + const struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode); + unsigned int max_blocks = ip->i_alloc->al_rgd->rd_free_clone; + unsigned int tmp, max_data = max_blocks - 3 * (sdp->sd_max_height - 1); + + for (tmp = max_data; tmp > sdp->sd_diptrs;) { + tmp = DIV_ROUND_UP(tmp, sdp->sd_inptrs); + max_data -= tmp; + } + /* This calculation isn't the exact reverse of gfs2_write_calc_reserve, + so it might end up with fewer data blocks */ + if (max_data <= *data_blocks) + return; + *data_blocks = max_data; + *ind_blocks = max_blocks - max_data; + *len = ((loff_t)max_data - 3) << sdp->sd_sb.sb_bsize_shift; + if (*len > max) { + *len = max; + gfs2_write_calc_reserv(ip, max, data_blocks, ind_blocks); + } +} + +static long gfs2_fallocate(struct inode *inode, int mode, loff_t offset, + loff_t len) +{ + struct gfs2_sbd *sdp = GFS2_SB(inode); + struct gfs2_inode *ip = GFS2_I(inode); + unsigned int data_blocks = 0, ind_blocks = 0, rblocks; + loff_t bytes, max_bytes; + struct gfs2_alloc *al; + int error; + loff_t next = (offset + len - 1) >> sdp->sd_sb.sb_bsize_shift; + next = (next + 1) << sdp->sd_sb.sb_bsize_shift; + + offset = (offset >> sdp->sd_sb.sb_bsize_shift) << + sdp->sd_sb.sb_bsize_shift; + + len = next - offset; + bytes = sdp->sd_max_rg_data * sdp->sd_sb.sb_bsize / 2; + if (!bytes) + bytes = UINT_MAX; + + gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, &ip->i_gh); + error = gfs2_glock_nq(&ip->i_gh); + if (unlikely(error)) + goto out_uninit; + + if (!gfs2_write_alloc_required(ip, offset, len)) + goto out_unlock; + + while (len > 0) { + if (len < bytes) + bytes = len; + al = gfs2_alloc_get(ip); + if (!al) { + error = -ENOMEM; + goto out_unlock; + } + + error = gfs2_quota_lock_check(ip); + if (error) + goto out_alloc_put; + +retry: + gfs2_write_calc_reserv(ip, bytes, &data_blocks, &ind_blocks); + + al->al_requested = data_blocks + ind_blocks; + error = gfs2_inplace_reserve(ip); + if (error) { + if (error == -ENOSPC && bytes > sdp->sd_sb.sb_bsize) { + bytes >>= 1; + goto retry; + } + goto out_qunlock; + } + max_bytes = bytes; + calc_max_reserv(ip, len, &max_bytes, &data_blocks, &ind_blocks); + al->al_requested = data_blocks + ind_blocks; + + rblocks = RES_DINODE + ind_blocks + RES_STATFS + RES_QUOTA + + RES_RG_HDR + gfs2_rg_blocks(al); + if (gfs2_is_jdata(ip)) + rblocks += data_blocks ? data_blocks : 1; + + error = gfs2_trans_begin(sdp, rblocks, + PAGE_CACHE_SIZE/sdp->sd_sb.sb_bsize); + if (error) + goto out_trans_fail; + + error = fallocate_chunk(inode, offset, max_bytes, mode); + gfs2_trans_end(sdp); + + if (error) + goto out_trans_fail; + + len -= max_bytes; + offset += max_bytes; + gfs2_inplace_release(ip); + gfs2_quota_unlock(ip); + gfs2_alloc_put(ip); + } + goto out_unlock; + +out_trans_fail: + gfs2_inplace_release(ip); +out_qunlock: + gfs2_quota_unlock(ip); +out_alloc_put: + gfs2_alloc_put(ip); +out_unlock: + gfs2_glock_dq(&ip->i_gh); +out_uninit: + gfs2_holder_uninit(&ip->i_gh); + return error; +} + + static int gfs2_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo, u64 start, u64 len) { @@ -1351,6 +1572,7 @@ const struct inode_operations gfs2_file_iops = { .getxattr = gfs2_getxattr, .listxattr = gfs2_listxattr, .removexattr = gfs2_removexattr, + .fallocate = gfs2_fallocate, .fiemap = gfs2_fiemap, }; diff --git a/fs/gfs2/quota.c b/fs/gfs2/quota.c index 1bc6b5695e6d..58a9b9998b42 100644 --- a/fs/gfs2/quota.c +++ b/fs/gfs2/quota.c @@ -735,10 +735,8 @@ get_a_page: goto out; size = loc + sizeof(struct gfs2_quota); - if (size > inode->i_size) { - ip->i_disksize = size; + if (size > inode->i_size) i_size_write(inode, size); - } inode->i_mtime = inode->i_atime = CURRENT_TIME; gfs2_trans_add_bh(ip->i_gl, dibh, 1); gfs2_dinode_out(ip, dibh->b_data); @@ -817,7 +815,7 @@ static int do_sync(unsigned int num_qd, struct gfs2_quota_data **qda) goto out_alloc; if (nalloc) - blocks += al->al_rgd->rd_length + nalloc * ind_blocks + RES_STATFS; + blocks += gfs2_rg_blocks(al) + nalloc * ind_blocks + RES_STATFS; error = gfs2_trans_begin(sdp, blocks, 0); if (error) @@ -1190,18 +1188,17 @@ static void gfs2_quota_change_in(struct gfs2_quota_change_host *qc, const void * int gfs2_quota_init(struct gfs2_sbd *sdp) { struct gfs2_inode *ip = GFS2_I(sdp->sd_qc_inode); - unsigned int blocks = ip->i_disksize >> sdp->sd_sb.sb_bsize_shift; + u64 size = i_size_read(sdp->sd_qc_inode); + unsigned int blocks = size >> sdp->sd_sb.sb_bsize_shift; unsigned int x, slot = 0; unsigned int found = 0; u64 dblock; u32 extlen = 0; int error; - if (!ip->i_disksize || ip->i_disksize > (64 << 20) || - ip->i_disksize & (sdp->sd_sb.sb_bsize - 1)) { - gfs2_consist_inode(ip); + if (gfs2_check_internal_file_size(sdp->sd_qc_inode, 1, 64 << 20)) return -EIO; - } + sdp->sd_quota_slots = blocks * sdp->sd_qc_per_block; sdp->sd_quota_chunks = DIV_ROUND_UP(sdp->sd_quota_slots, 8 * PAGE_SIZE); @@ -1589,6 +1586,7 @@ static int gfs2_set_dqblk(struct super_block *sb, int type, qid_t id, error = gfs2_inplace_reserve(ip); if (error) goto out_alloc; + blocks += gfs2_rg_blocks(al); } error = gfs2_trans_begin(sdp, blocks + RES_DINODE + 1, 0); diff --git a/fs/gfs2/recovery.c b/fs/gfs2/recovery.c index f7f89a94a5a4..f2a02edcac8f 100644 --- a/fs/gfs2/recovery.c +++ b/fs/gfs2/recovery.c @@ -455,11 +455,13 @@ void gfs2_recover_func(struct work_struct *work) int ro = 0; unsigned int pass; int error; + int jlocked = 0; - if (jd->jd_jid != sdp->sd_lockstruct.ls_jid) { + if (sdp->sd_args.ar_spectator || + (jd->jd_jid != sdp->sd_lockstruct.ls_jid)) { fs_info(sdp, "jid=%u: Trying to acquire journal lock...\n", jd->jd_jid); - + jlocked = 1; /* Acquire the journal lock so we can do recovery */ error = gfs2_glock_nq_num(sdp, jd->jd_jid, &gfs2_journal_glops, @@ -554,13 +556,12 @@ void gfs2_recover_func(struct work_struct *work) jd->jd_jid, t); } - if (jd->jd_jid != sdp->sd_lockstruct.ls_jid) - gfs2_glock_dq_uninit(&ji_gh); - gfs2_recovery_done(sdp, jd->jd_jid, LM_RD_SUCCESS); - if (jd->jd_jid != sdp->sd_lockstruct.ls_jid) + if (jlocked) { + gfs2_glock_dq_uninit(&ji_gh); gfs2_glock_dq_uninit(&j_gh); + } fs_info(sdp, "jid=%u: Done\n", jd->jd_jid); goto done; @@ -568,7 +569,7 @@ void gfs2_recover_func(struct work_struct *work) fail_gunlock_tr: gfs2_glock_dq_uninit(&t_gh); fail_gunlock_ji: - if (jd->jd_jid != sdp->sd_lockstruct.ls_jid) { + if (jlocked) { gfs2_glock_dq_uninit(&ji_gh); fail_gunlock_j: gfs2_glock_dq_uninit(&j_gh); diff --git a/fs/gfs2/rgrp.c b/fs/gfs2/rgrp.c index 171a744f8e45..fb67f593f408 100644 --- a/fs/gfs2/rgrp.c +++ b/fs/gfs2/rgrp.c @@ -500,7 +500,7 @@ u64 gfs2_ri_total(struct gfs2_sbd *sdp) for (rgrps = 0;; rgrps++) { loff_t pos = rgrps * sizeof(struct gfs2_rindex); - if (pos + sizeof(struct gfs2_rindex) >= ip->i_disksize) + if (pos + sizeof(struct gfs2_rindex) >= i_size_read(inode)) break; error = gfs2_internal_read(ip, &ra_state, buf, &pos, sizeof(struct gfs2_rindex)); @@ -588,7 +588,9 @@ static int gfs2_ri_update(struct gfs2_inode *ip) struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode); struct inode *inode = &ip->i_inode; struct file_ra_state ra_state; - u64 rgrp_count = ip->i_disksize; + u64 rgrp_count = i_size_read(inode); + struct gfs2_rgrpd *rgd; + unsigned int max_data = 0; int error; do_div(rgrp_count, sizeof(struct gfs2_rindex)); @@ -603,6 +605,10 @@ static int gfs2_ri_update(struct gfs2_inode *ip) } } + list_for_each_entry(rgd, &sdp->sd_rindex_list, rd_list) + if (rgd->rd_data > max_data) + max_data = rgd->rd_data; + sdp->sd_max_rg_data = max_data; sdp->sd_rindex_uptodate = 1; return 0; } @@ -622,13 +628,15 @@ static int gfs2_ri_update_special(struct gfs2_inode *ip) struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode); struct inode *inode = &ip->i_inode; struct file_ra_state ra_state; + struct gfs2_rgrpd *rgd; + unsigned int max_data = 0; int error; file_ra_state_init(&ra_state, inode->i_mapping); for (sdp->sd_rgrps = 0;; sdp->sd_rgrps++) { /* Ignore partials */ if ((sdp->sd_rgrps + 1) * sizeof(struct gfs2_rindex) > - ip->i_disksize) + i_size_read(inode)) break; error = read_rindex_entry(ip, &ra_state); if (error) { @@ -636,6 +644,10 @@ static int gfs2_ri_update_special(struct gfs2_inode *ip) return error; } } + list_for_each_entry(rgd, &sdp->sd_rindex_list, rd_list) + if (rgd->rd_data > max_data) + max_data = rgd->rd_data; + sdp->sd_max_rg_data = max_data; sdp->sd_rindex_uptodate = 1; return 0; @@ -1188,7 +1200,8 @@ out: * Returns: errno */ -int gfs2_inplace_reserve_i(struct gfs2_inode *ip, char *file, unsigned int line) +int gfs2_inplace_reserve_i(struct gfs2_inode *ip, int hold_rindex, + char *file, unsigned int line) { struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode); struct gfs2_alloc *al = ip->i_alloc; @@ -1199,12 +1212,15 @@ int gfs2_inplace_reserve_i(struct gfs2_inode *ip, char *file, unsigned int line) return -EINVAL; try_again: - /* We need to hold the rindex unless the inode we're using is - the rindex itself, in which case it's already held. */ - if (ip != GFS2_I(sdp->sd_rindex)) - error = gfs2_rindex_hold(sdp, &al->al_ri_gh); - else if (!sdp->sd_rgrps) /* We may not have the rindex read in, so: */ - error = gfs2_ri_update_special(ip); + if (hold_rindex) { + /* We need to hold the rindex unless the inode we're using is + the rindex itself, in which case it's already held. */ + if (ip != GFS2_I(sdp->sd_rindex)) + error = gfs2_rindex_hold(sdp, &al->al_ri_gh); + else if (!sdp->sd_rgrps) /* We may not have the rindex read + in, so: */ + error = gfs2_ri_update_special(ip); + } if (error) return error; @@ -1215,7 +1231,7 @@ try_again: try to free it, and try the allocation again. */ error = get_local_rgrp(ip, &unlinked, &last_unlinked); if (error) { - if (ip != GFS2_I(sdp->sd_rindex)) + if (hold_rindex && ip != GFS2_I(sdp->sd_rindex)) gfs2_glock_dq_uninit(&al->al_ri_gh); if (error != -EAGAIN) return error; @@ -1257,7 +1273,7 @@ void gfs2_inplace_release(struct gfs2_inode *ip) al->al_rgd = NULL; if (al->al_rgd_gh.gh_gl) gfs2_glock_dq_uninit(&al->al_rgd_gh); - if (ip != GFS2_I(sdp->sd_rindex)) + if (ip != GFS2_I(sdp->sd_rindex) && al->al_ri_gh.gh_gl) gfs2_glock_dq_uninit(&al->al_ri_gh); } @@ -1496,11 +1512,19 @@ int gfs2_alloc_block(struct gfs2_inode *ip, u64 *bn, unsigned int *n) struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode); struct buffer_head *dibh; struct gfs2_alloc *al = ip->i_alloc; - struct gfs2_rgrpd *rgd = al->al_rgd; + struct gfs2_rgrpd *rgd; u32 goal, blk; u64 block; int error; + /* Only happens if there is a bug in gfs2, return something distinctive + * to ensure that it is noticed. + */ + if (al == NULL) + return -ECANCELED; + + rgd = al->al_rgd; + if (rgrp_contains_block(rgd, ip->i_goal)) goal = ip->i_goal - rgd->rd_data0; else diff --git a/fs/gfs2/rgrp.h b/fs/gfs2/rgrp.h index f07119d89557..0e35c0466f9a 100644 --- a/fs/gfs2/rgrp.h +++ b/fs/gfs2/rgrp.h @@ -39,10 +39,12 @@ static inline void gfs2_alloc_put(struct gfs2_inode *ip) ip->i_alloc = NULL; } -extern int gfs2_inplace_reserve_i(struct gfs2_inode *ip, char *file, - unsigned int line); +extern int gfs2_inplace_reserve_i(struct gfs2_inode *ip, int hold_rindex, + char *file, unsigned int line); #define gfs2_inplace_reserve(ip) \ -gfs2_inplace_reserve_i((ip), __FILE__, __LINE__) + gfs2_inplace_reserve_i((ip), 1, __FILE__, __LINE__) +#define gfs2_inplace_reserve_ri(ip) \ + gfs2_inplace_reserve_i((ip), 0, __FILE__, __LINE__) extern void gfs2_inplace_release(struct gfs2_inode *ip); diff --git a/fs/gfs2/super.c b/fs/gfs2/super.c index 77cb9f830ee4..047d1176096c 100644 --- a/fs/gfs2/super.c +++ b/fs/gfs2/super.c @@ -85,6 +85,7 @@ static const match_table_t tokens = { {Opt_locktable, "locktable=%s"}, {Opt_hostdata, "hostdata=%s"}, {Opt_spectator, "spectator"}, + {Opt_spectator, "norecovery"}, {Opt_ignore_local_fs, "ignore_local_fs"}, {Opt_localflocks, "localflocks"}, {Opt_localcaching, "localcaching"}, @@ -159,13 +160,13 @@ int gfs2_mount_args(struct gfs2_args *args, char *options) args->ar_spectator = 1; break; case Opt_ignore_local_fs: - args->ar_ignore_local_fs = 1; + /* Retained for backwards compat only */ break; case Opt_localflocks: args->ar_localflocks = 1; break; case Opt_localcaching: - args->ar_localcaching = 1; + /* Retained for backwards compat only */ break; case Opt_debug: if (args->ar_errors == GFS2_ERRORS_PANIC) { @@ -179,7 +180,7 @@ int gfs2_mount_args(struct gfs2_args *args, char *options) args->ar_debug = 0; break; case Opt_upgrade: - args->ar_upgrade = 1; + /* Retained for backwards compat only */ break; case Opt_acl: args->ar_posix_acl = 1; @@ -342,15 +343,14 @@ int gfs2_jdesc_check(struct gfs2_jdesc *jd) { struct gfs2_inode *ip = GFS2_I(jd->jd_inode); struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); + u64 size = i_size_read(jd->jd_inode); - if (ip->i_disksize < (8 << 20) || ip->i_disksize > (1 << 30) || - (ip->i_disksize & (sdp->sd_sb.sb_bsize - 1))) { - gfs2_consist_inode(ip); + if (gfs2_check_internal_file_size(jd->jd_inode, 8 << 20, 1 << 30)) return -EIO; - } - jd->jd_blocks = ip->i_disksize >> sdp->sd_sb.sb_bsize_shift; - if (gfs2_write_alloc_required(ip, 0, ip->i_disksize)) { + jd->jd_blocks = size >> sdp->sd_sb.sb_bsize_shift; + + if (gfs2_write_alloc_required(ip, 0, size)) { gfs2_consist_inode(ip); return -EIO; } @@ -1129,9 +1129,7 @@ static int gfs2_remount_fs(struct super_block *sb, int *flags, char *data) /* Some flags must not be changed */ if (args_neq(&args, &sdp->sd_args, spectator) || - args_neq(&args, &sdp->sd_args, ignore_local_fs) || args_neq(&args, &sdp->sd_args, localflocks) || - args_neq(&args, &sdp->sd_args, localcaching) || args_neq(&args, &sdp->sd_args, meta)) return -EINVAL; @@ -1234,16 +1232,10 @@ static int gfs2_show_options(struct seq_file *s, struct vfsmount *mnt) seq_printf(s, ",hostdata=%s", args->ar_hostdata); if (args->ar_spectator) seq_printf(s, ",spectator"); - if (args->ar_ignore_local_fs) - seq_printf(s, ",ignore_local_fs"); if (args->ar_localflocks) seq_printf(s, ",localflocks"); - if (args->ar_localcaching) - seq_printf(s, ",localcaching"); if (args->ar_debug) seq_printf(s, ",debug"); - if (args->ar_upgrade) - seq_printf(s, ",upgrade"); if (args->ar_posix_acl) seq_printf(s, ",acl"); if (args->ar_quota != GFS2_QUOTA_DEFAULT) { diff --git a/fs/gfs2/sys.c b/fs/gfs2/sys.c index ccacffd2faaa..748ccb557c18 100644 --- a/fs/gfs2/sys.c +++ b/fs/gfs2/sys.c @@ -230,7 +230,10 @@ static ssize_t demote_rq_store(struct gfs2_sbd *sdp, const char *buf, size_t len if (gltype > LM_TYPE_JOURNAL) return -EINVAL; - glops = gfs2_glops_list[gltype]; + if (gltype == LM_TYPE_NONDISK && glnum == GFS2_TRANS_LOCK) + glops = &gfs2_trans_glops; + else + glops = gfs2_glops_list[gltype]; if (glops == NULL) return -EINVAL; if (!test_and_set_bit(SDF_DEMOTE, &sdp->sd_flags)) @@ -399,31 +402,32 @@ static ssize_t recover_status_show(struct gfs2_sbd *sdp, char *buf) static ssize_t jid_show(struct gfs2_sbd *sdp, char *buf) { - return sprintf(buf, "%u\n", sdp->sd_lockstruct.ls_jid); + return sprintf(buf, "%d\n", sdp->sd_lockstruct.ls_jid); } static ssize_t jid_store(struct gfs2_sbd *sdp, const char *buf, size_t len) { - unsigned jid; + int jid; int rv; - rv = sscanf(buf, "%u", &jid); + rv = sscanf(buf, "%d", &jid); if (rv != 1) return -EINVAL; spin_lock(&sdp->sd_jindex_spin); rv = -EINVAL; - if (sdp->sd_args.ar_spectator) - goto out; if (sdp->sd_lockstruct.ls_ops->lm_mount == NULL) goto out; rv = -EBUSY; - if (test_and_clear_bit(SDF_NOJOURNALID, &sdp->sd_flags) == 0) + if (test_bit(SDF_NOJOURNALID, &sdp->sd_flags) == 0) goto out; + rv = 0; + if (sdp->sd_args.ar_spectator && jid > 0) + rv = jid = -EINVAL; sdp->sd_lockstruct.ls_jid = jid; + clear_bit(SDF_NOJOURNALID, &sdp->sd_flags); smp_mb__after_clear_bit(); wake_up_bit(&sdp->sd_flags, SDF_NOJOURNALID); - rv = 0; out: spin_unlock(&sdp->sd_jindex_spin); return rv ? rv : len; @@ -617,7 +621,7 @@ static int gfs2_uevent(struct kset *kset, struct kobject *kobj, add_uevent_var(env, "LOCKTABLE=%s", sdp->sd_table_name); add_uevent_var(env, "LOCKPROTO=%s", sdp->sd_proto_name); if (!test_bit(SDF_NOJOURNALID, &sdp->sd_flags)) - add_uevent_var(env, "JOURNALID=%u", sdp->sd_lockstruct.ls_jid); + add_uevent_var(env, "JOURNALID=%d", sdp->sd_lockstruct.ls_jid); if (gfs2_uuid_valid(uuid)) add_uevent_var(env, "UUID=%pUB", uuid); return 0; diff --git a/fs/gfs2/trace_gfs2.h b/fs/gfs2/trace_gfs2.h index 148d55c14171..cedb0bb96d96 100644 --- a/fs/gfs2/trace_gfs2.h +++ b/fs/gfs2/trace_gfs2.h @@ -39,7 +39,8 @@ {(1UL << GLF_INVALIDATE_IN_PROGRESS), "i" }, \ {(1UL << GLF_REPLY_PENDING), "r" }, \ {(1UL << GLF_INITIAL), "I" }, \ - {(1UL << GLF_FROZEN), "F" }) + {(1UL << GLF_FROZEN), "F" }, \ + {(1UL << GLF_QUEUED), "q" }) #ifndef NUMPTY #define NUMPTY diff --git a/fs/gfs2/trans.h b/fs/gfs2/trans.h index edf9d4bd908e..fb56b783e028 100644 --- a/fs/gfs2/trans.h +++ b/fs/gfs2/trans.h @@ -20,11 +20,20 @@ struct gfs2_glock; #define RES_JDATA 1 #define RES_DATA 1 #define RES_LEAF 1 +#define RES_RG_HDR 1 #define RES_RG_BIT 2 #define RES_EATTR 1 #define RES_STATFS 1 #define RES_QUOTA 2 +/* reserve either the number of blocks to be allocated plus the rg header + * block, or all of the blocks in the rg, whichever is smaller */ +static inline unsigned int gfs2_rg_blocks(const struct gfs2_alloc *al) +{ + return (al->al_requested < al->al_rgd->rd_length)? + al->al_requested + 1 : al->al_rgd->rd_length; +} + int gfs2_trans_begin(struct gfs2_sbd *sdp, unsigned int blocks, unsigned int revokes); diff --git a/fs/gfs2/xattr.c b/fs/gfs2/xattr.c index 776af6eb4bcb..30b58f07c8a6 100644 --- a/fs/gfs2/xattr.c +++ b/fs/gfs2/xattr.c @@ -734,7 +734,7 @@ static int ea_alloc_skeleton(struct gfs2_inode *ip, struct gfs2_ea_request *er, goto out_gunlock_q; error = gfs2_trans_begin(GFS2_SB(&ip->i_inode), - blks + al->al_rgd->rd_length + + blks + gfs2_rg_blocks(al) + RES_DINODE + RES_STATFS + RES_QUOTA, 0); if (error) goto out_ipres; diff --git a/fs/hfs/bfind.c b/fs/hfs/bfind.c index 4129cdb3f0d8..571abe97b42a 100644 --- a/fs/hfs/bfind.c +++ b/fs/hfs/bfind.c @@ -23,7 +23,7 @@ int hfs_find_init(struct hfs_btree *tree, struct hfs_find_data *fd) fd->search_key = ptr; fd->key = ptr + tree->max_key_len + 2; dprint(DBG_BNODE_REFS, "find_init: %d (%p)\n", tree->cnid, __builtin_return_address(0)); - down(&tree->tree_lock); + mutex_lock(&tree->tree_lock); return 0; } @@ -32,7 +32,7 @@ void hfs_find_exit(struct hfs_find_data *fd) hfs_bnode_put(fd->bnode); kfree(fd->search_key); dprint(DBG_BNODE_REFS, "find_exit: %d (%p)\n", fd->tree->cnid, __builtin_return_address(0)); - up(&fd->tree->tree_lock); + mutex_unlock(&fd->tree->tree_lock); fd->tree = NULL; } diff --git a/fs/hfs/btree.c b/fs/hfs/btree.c index 38a0a9917d7f..3ebc437736fe 100644 --- a/fs/hfs/btree.c +++ b/fs/hfs/btree.c @@ -27,7 +27,7 @@ struct hfs_btree *hfs_btree_open(struct super_block *sb, u32 id, btree_keycmp ke if (!tree) return NULL; - init_MUTEX(&tree->tree_lock); + mutex_init(&tree->tree_lock); spin_lock_init(&tree->hash_lock); /* Set the correct compare function */ tree->sb = sb; diff --git a/fs/hfs/btree.h b/fs/hfs/btree.h index cc51905ac21d..2a1d712f85dc 100644 --- a/fs/hfs/btree.h +++ b/fs/hfs/btree.h @@ -33,7 +33,7 @@ struct hfs_btree { unsigned int depth; //unsigned int map1_size, map_size; - struct semaphore tree_lock; + struct mutex tree_lock; unsigned int pages_per_bnode; spinlock_t hash_lock; diff --git a/fs/hfsplus/bfind.c b/fs/hfsplus/bfind.c index 5007a41f1be9..d182438c7ae4 100644 --- a/fs/hfsplus/bfind.c +++ b/fs/hfsplus/bfind.c @@ -23,7 +23,7 @@ int hfs_find_init(struct hfs_btree *tree, struct hfs_find_data *fd) fd->search_key = ptr; fd->key = ptr + tree->max_key_len + 2; dprint(DBG_BNODE_REFS, "find_init: %d (%p)\n", tree->cnid, __builtin_return_address(0)); - down(&tree->tree_lock); + mutex_lock(&tree->tree_lock); return 0; } @@ -32,7 +32,7 @@ void hfs_find_exit(struct hfs_find_data *fd) hfs_bnode_put(fd->bnode); kfree(fd->search_key); dprint(DBG_BNODE_REFS, "find_exit: %d (%p)\n", fd->tree->cnid, __builtin_return_address(0)); - up(&fd->tree->tree_lock); + mutex_unlock(&fd->tree->tree_lock); fd->tree = NULL; } @@ -52,6 +52,10 @@ int __hfs_brec_find(struct hfs_bnode *bnode, struct hfs_find_data *fd) rec = (e + b) / 2; len = hfs_brec_lenoff(bnode, rec, &off); keylen = hfs_brec_keylen(bnode, rec); + if (keylen == 0) { + res = -EINVAL; + goto fail; + } hfs_bnode_read(bnode, fd->key, off, keylen); cmpval = bnode->tree->keycmp(fd->key, fd->search_key); if (!cmpval) { @@ -67,6 +71,10 @@ int __hfs_brec_find(struct hfs_bnode *bnode, struct hfs_find_data *fd) if (rec != e && e >= 0) { len = hfs_brec_lenoff(bnode, e, &off); keylen = hfs_brec_keylen(bnode, e); + if (keylen == 0) { + res = -EINVAL; + goto fail; + } hfs_bnode_read(bnode, fd->key, off, keylen); } done: @@ -75,6 +83,7 @@ done: fd->keylength = keylen; fd->entryoffset = off + keylen; fd->entrylength = len - keylen; +fail: return res; } @@ -198,6 +207,10 @@ int hfs_brec_goto(struct hfs_find_data *fd, int cnt) len = hfs_brec_lenoff(bnode, fd->record, &off); keylen = hfs_brec_keylen(bnode, fd->record); + if (keylen == 0) { + res = -EINVAL; + goto out; + } fd->keyoffset = off; fd->keylength = keylen; fd->entryoffset = off + keylen; diff --git a/fs/hfsplus/bitmap.c b/fs/hfsplus/bitmap.c index ea30afc2a03c..ad57f5991eb1 100644 --- a/fs/hfsplus/bitmap.c +++ b/fs/hfsplus/bitmap.c @@ -17,6 +17,7 @@ int hfsplus_block_allocate(struct super_block *sb, u32 size, u32 offset, u32 *max) { + struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb); struct page *page; struct address_space *mapping; __be32 *pptr, *curr, *end; @@ -29,8 +30,8 @@ int hfsplus_block_allocate(struct super_block *sb, u32 size, u32 offset, u32 *ma return size; dprint(DBG_BITMAP, "block_allocate: %u,%u,%u\n", size, offset, len); - mutex_lock(&HFSPLUS_SB(sb).alloc_file->i_mutex); - mapping = HFSPLUS_SB(sb).alloc_file->i_mapping; + mutex_lock(&sbi->alloc_mutex); + mapping = sbi->alloc_file->i_mapping; page = read_mapping_page(mapping, offset / PAGE_CACHE_BITS, NULL); if (IS_ERR(page)) { start = size; @@ -150,16 +151,17 @@ done: set_page_dirty(page); kunmap(page); *max = offset + (curr - pptr) * 32 + i - start; - HFSPLUS_SB(sb).free_blocks -= *max; + sbi->free_blocks -= *max; sb->s_dirt = 1; dprint(DBG_BITMAP, "-> %u,%u\n", start, *max); out: - mutex_unlock(&HFSPLUS_SB(sb).alloc_file->i_mutex); + mutex_unlock(&sbi->alloc_mutex); return start; } int hfsplus_block_free(struct super_block *sb, u32 offset, u32 count) { + struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb); struct page *page; struct address_space *mapping; __be32 *pptr, *curr, *end; @@ -172,11 +174,11 @@ int hfsplus_block_free(struct super_block *sb, u32 offset, u32 count) dprint(DBG_BITMAP, "block_free: %u,%u\n", offset, count); /* are all of the bits in range? */ - if ((offset + count) > HFSPLUS_SB(sb).total_blocks) + if ((offset + count) > sbi->total_blocks) return -2; - mutex_lock(&HFSPLUS_SB(sb).alloc_file->i_mutex); - mapping = HFSPLUS_SB(sb).alloc_file->i_mapping; + mutex_lock(&sbi->alloc_mutex); + mapping = sbi->alloc_file->i_mapping; pnr = offset / PAGE_CACHE_BITS; page = read_mapping_page(mapping, pnr, NULL); pptr = kmap(page); @@ -224,9 +226,9 @@ done: out: set_page_dirty(page); kunmap(page); - HFSPLUS_SB(sb).free_blocks += len; + sbi->free_blocks += len; sb->s_dirt = 1; - mutex_unlock(&HFSPLUS_SB(sb).alloc_file->i_mutex); + mutex_unlock(&sbi->alloc_mutex); return 0; } diff --git a/fs/hfsplus/brec.c b/fs/hfsplus/brec.c index c88e5d72a402..2f39d05443e1 100644 --- a/fs/hfsplus/brec.c +++ b/fs/hfsplus/brec.c @@ -42,10 +42,13 @@ u16 hfs_brec_keylen(struct hfs_bnode *node, u16 rec) recoff = hfs_bnode_read_u16(node, node->tree->node_size - (rec + 1) * 2); if (!recoff) return 0; - if (node->tree->attributes & HFS_TREE_BIGKEYS) - retval = hfs_bnode_read_u16(node, recoff) + 2; - else - retval = (hfs_bnode_read_u8(node, recoff) | 1) + 1; + + retval = hfs_bnode_read_u16(node, recoff) + 2; + if (retval > node->tree->max_key_len + 2) { + printk(KERN_ERR "hfs: keylen %d too large\n", + retval); + retval = 0; + } } return retval; } @@ -216,7 +219,7 @@ skip: static struct hfs_bnode *hfs_bnode_split(struct hfs_find_data *fd) { struct hfs_btree *tree; - struct hfs_bnode *node, *new_node; + struct hfs_bnode *node, *new_node, *next_node; struct hfs_bnode_desc node_desc; int num_recs, new_rec_off, new_off, old_rec_off; int data_start, data_end, size; @@ -235,6 +238,17 @@ static struct hfs_bnode *hfs_bnode_split(struct hfs_find_data *fd) new_node->type = node->type; new_node->height = node->height; + if (node->next) + next_node = hfs_bnode_find(tree, node->next); + else + next_node = NULL; + + if (IS_ERR(next_node)) { + hfs_bnode_put(node); + hfs_bnode_put(new_node); + return next_node; + } + size = tree->node_size / 2 - node->num_recs * 2 - 14; old_rec_off = tree->node_size - 4; num_recs = 1; @@ -248,6 +262,8 @@ static struct hfs_bnode *hfs_bnode_split(struct hfs_find_data *fd) /* panic? */ hfs_bnode_put(node); hfs_bnode_put(new_node); + if (next_node) + hfs_bnode_put(next_node); return ERR_PTR(-ENOSPC); } @@ -302,8 +318,7 @@ static struct hfs_bnode *hfs_bnode_split(struct hfs_find_data *fd) hfs_bnode_write(node, &node_desc, 0, sizeof(node_desc)); /* update next bnode header */ - if (new_node->next) { - struct hfs_bnode *next_node = hfs_bnode_find(tree, new_node->next); + if (next_node) { next_node->prev = new_node->this; hfs_bnode_read(next_node, &node_desc, 0, sizeof(node_desc)); node_desc.prev = cpu_to_be32(next_node->prev); diff --git a/fs/hfsplus/btree.c b/fs/hfsplus/btree.c index e49fcee1e293..22e4d4e32999 100644 --- a/fs/hfsplus/btree.c +++ b/fs/hfsplus/btree.c @@ -30,7 +30,7 @@ struct hfs_btree *hfs_btree_open(struct super_block *sb, u32 id) if (!tree) return NULL; - init_MUTEX(&tree->tree_lock); + mutex_init(&tree->tree_lock); spin_lock_init(&tree->hash_lock); tree->sb = sb; tree->cnid = id; @@ -39,10 +39,16 @@ struct hfs_btree *hfs_btree_open(struct super_block *sb, u32 id) goto free_tree; tree->inode = inode; + if (!HFSPLUS_I(tree->inode)->first_blocks) { + printk(KERN_ERR + "hfs: invalid btree extent records (0 size).\n"); + goto free_inode; + } + mapping = tree->inode->i_mapping; page = read_mapping_page(mapping, 0, NULL); if (IS_ERR(page)) - goto free_tree; + goto free_inode; /* Load the header */ head = (struct hfs_btree_header_rec *)(kmap(page) + sizeof(struct hfs_bnode_desc)); @@ -57,27 +63,56 @@ struct hfs_btree *hfs_btree_open(struct super_block *sb, u32 id) tree->max_key_len = be16_to_cpu(head->max_key_len); tree->depth = be16_to_cpu(head->depth); - /* Set the correct compare function */ - if (id == HFSPLUS_EXT_CNID) { + /* Verify the tree and set the correct compare function */ + switch (id) { + case HFSPLUS_EXT_CNID: + if (tree->max_key_len != HFSPLUS_EXT_KEYLEN - sizeof(u16)) { + printk(KERN_ERR "hfs: invalid extent max_key_len %d\n", + tree->max_key_len); + goto fail_page; + } + if (tree->attributes & HFS_TREE_VARIDXKEYS) { + printk(KERN_ERR "hfs: invalid extent btree flag\n"); + goto fail_page; + } + tree->keycmp = hfsplus_ext_cmp_key; - } else if (id == HFSPLUS_CAT_CNID) { - if ((HFSPLUS_SB(sb).flags & HFSPLUS_SB_HFSX) && + break; + case HFSPLUS_CAT_CNID: + if (tree->max_key_len != HFSPLUS_CAT_KEYLEN - sizeof(u16)) { + printk(KERN_ERR "hfs: invalid catalog max_key_len %d\n", + tree->max_key_len); + goto fail_page; + } + if (!(tree->attributes & HFS_TREE_VARIDXKEYS)) { + printk(KERN_ERR "hfs: invalid catalog btree flag\n"); + goto fail_page; + } + + if (test_bit(HFSPLUS_SB_HFSX, &HFSPLUS_SB(sb)->flags) && (head->key_type == HFSPLUS_KEY_BINARY)) tree->keycmp = hfsplus_cat_bin_cmp_key; else { tree->keycmp = hfsplus_cat_case_cmp_key; - HFSPLUS_SB(sb).flags |= HFSPLUS_SB_CASEFOLD; + set_bit(HFSPLUS_SB_CASEFOLD, &HFSPLUS_SB(sb)->flags); } - } else { + break; + default: printk(KERN_ERR "hfs: unknown B*Tree requested\n"); goto fail_page; } + if (!(tree->attributes & HFS_TREE_BIGKEYS)) { + printk(KERN_ERR "hfs: invalid btree flag\n"); + goto fail_page; + } + size = tree->node_size; if (!is_power_of_2(size)) goto fail_page; if (!tree->node_count) goto fail_page; + tree->node_size_shift = ffs(size) - 1; tree->pages_per_bnode = (tree->node_size + PAGE_CACHE_SIZE - 1) >> PAGE_CACHE_SHIFT; @@ -87,10 +122,11 @@ struct hfs_btree *hfs_btree_open(struct super_block *sb, u32 id) return tree; fail_page: - tree->inode->i_mapping->a_ops = &hfsplus_aops; page_cache_release(page); - free_tree: + free_inode: + tree->inode->i_mapping->a_ops = &hfsplus_aops; iput(tree->inode); + free_tree: kfree(tree); return NULL; } @@ -192,17 +228,18 @@ struct hfs_bnode *hfs_bmap_alloc(struct hfs_btree *tree) while (!tree->free_nodes) { struct inode *inode = tree->inode; + struct hfsplus_inode_info *hip = HFSPLUS_I(inode); u32 count; int res; res = hfsplus_file_extend(inode); if (res) return ERR_PTR(res); - HFSPLUS_I(inode).phys_size = inode->i_size = - (loff_t)HFSPLUS_I(inode).alloc_blocks << - HFSPLUS_SB(tree->sb).alloc_blksz_shift; - HFSPLUS_I(inode).fs_blocks = HFSPLUS_I(inode).alloc_blocks << - HFSPLUS_SB(tree->sb).fs_shift; + hip->phys_size = inode->i_size = + (loff_t)hip->alloc_blocks << + HFSPLUS_SB(tree->sb)->alloc_blksz_shift; + hip->fs_blocks = + hip->alloc_blocks << HFSPLUS_SB(tree->sb)->fs_shift; inode_set_bytes(inode, inode->i_size); count = inode->i_size >> tree->node_size_shift; tree->free_nodes = count - tree->node_count; diff --git a/fs/hfsplus/catalog.c b/fs/hfsplus/catalog.c index f6874acb2cf2..8af45fc5b051 100644 --- a/fs/hfsplus/catalog.c +++ b/fs/hfsplus/catalog.c @@ -67,7 +67,7 @@ static void hfsplus_cat_build_key_uni(hfsplus_btree_key *key, u32 parent, key->key_len = cpu_to_be16(6 + ustrlen); } -static void hfsplus_set_perms(struct inode *inode, struct hfsplus_perm *perms) +void hfsplus_cat_set_perms(struct inode *inode, struct hfsplus_perm *perms) { if (inode->i_flags & S_IMMUTABLE) perms->rootflags |= HFSPLUS_FLG_IMMUTABLE; @@ -77,15 +77,24 @@ static void hfsplus_set_perms(struct inode *inode, struct hfsplus_perm *perms) perms->rootflags |= HFSPLUS_FLG_APPEND; else perms->rootflags &= ~HFSPLUS_FLG_APPEND; - HFSPLUS_I(inode).rootflags = perms->rootflags; - HFSPLUS_I(inode).userflags = perms->userflags; + + perms->userflags = HFSPLUS_I(inode)->userflags; perms->mode = cpu_to_be16(inode->i_mode); perms->owner = cpu_to_be32(inode->i_uid); perms->group = cpu_to_be32(inode->i_gid); + + if (S_ISREG(inode->i_mode)) + perms->dev = cpu_to_be32(inode->i_nlink); + else if (S_ISBLK(inode->i_mode) || S_ISCHR(inode->i_mode)) + perms->dev = cpu_to_be32(inode->i_rdev); + else + perms->dev = 0; } static int hfsplus_cat_build_record(hfsplus_cat_entry *entry, u32 cnid, struct inode *inode) { + struct hfsplus_sb_info *sbi = HFSPLUS_SB(inode->i_sb); + if (S_ISDIR(inode->i_mode)) { struct hfsplus_cat_folder *folder; @@ -93,13 +102,13 @@ static int hfsplus_cat_build_record(hfsplus_cat_entry *entry, u32 cnid, struct i memset(folder, 0, sizeof(*folder)); folder->type = cpu_to_be16(HFSPLUS_FOLDER); folder->id = cpu_to_be32(inode->i_ino); - HFSPLUS_I(inode).create_date = + HFSPLUS_I(inode)->create_date = folder->create_date = folder->content_mod_date = folder->attribute_mod_date = folder->access_date = hfsp_now2mt(); - hfsplus_set_perms(inode, &folder->permissions); - if (inode == HFSPLUS_SB(inode->i_sb).hidden_dir) + hfsplus_cat_set_perms(inode, &folder->permissions); + if (inode == sbi->hidden_dir) /* invisible and namelocked */ folder->user_info.frFlags = cpu_to_be16(0x5000); return sizeof(*folder); @@ -111,19 +120,19 @@ static int hfsplus_cat_build_record(hfsplus_cat_entry *entry, u32 cnid, struct i file->type = cpu_to_be16(HFSPLUS_FILE); file->flags = cpu_to_be16(HFSPLUS_FILE_THREAD_EXISTS); file->id = cpu_to_be32(cnid); - HFSPLUS_I(inode).create_date = + HFSPLUS_I(inode)->create_date = file->create_date = file->content_mod_date = file->attribute_mod_date = file->access_date = hfsp_now2mt(); if (cnid == inode->i_ino) { - hfsplus_set_perms(inode, &file->permissions); + hfsplus_cat_set_perms(inode, &file->permissions); if (S_ISLNK(inode->i_mode)) { file->user_info.fdType = cpu_to_be32(HFSP_SYMLINK_TYPE); file->user_info.fdCreator = cpu_to_be32(HFSP_SYMLINK_CREATOR); } else { - file->user_info.fdType = cpu_to_be32(HFSPLUS_SB(inode->i_sb).type); - file->user_info.fdCreator = cpu_to_be32(HFSPLUS_SB(inode->i_sb).creator); + file->user_info.fdType = cpu_to_be32(sbi->type); + file->user_info.fdCreator = cpu_to_be32(sbi->creator); } if ((file->permissions.rootflags | file->permissions.userflags) & HFSPLUS_FLG_IMMUTABLE) file->flags |= cpu_to_be16(HFSPLUS_FILE_LOCKED); @@ -131,8 +140,8 @@ static int hfsplus_cat_build_record(hfsplus_cat_entry *entry, u32 cnid, struct i file->user_info.fdType = cpu_to_be32(HFSP_HARDLINK_TYPE); file->user_info.fdCreator = cpu_to_be32(HFSP_HFSPLUS_CREATOR); file->user_info.fdFlags = cpu_to_be16(0x100); - file->create_date = HFSPLUS_I(HFSPLUS_SB(inode->i_sb).hidden_dir).create_date; - file->permissions.dev = cpu_to_be32(HFSPLUS_I(inode).dev); + file->create_date = HFSPLUS_I(sbi->hidden_dir)->create_date; + file->permissions.dev = cpu_to_be32(HFSPLUS_I(inode)->linkid); } return sizeof(*file); } @@ -180,15 +189,14 @@ int hfsplus_find_cat(struct super_block *sb, u32 cnid, int hfsplus_create_cat(u32 cnid, struct inode *dir, struct qstr *str, struct inode *inode) { + struct super_block *sb = dir->i_sb; struct hfs_find_data fd; - struct super_block *sb; hfsplus_cat_entry entry; int entry_size; int err; dprint(DBG_CAT_MOD, "create_cat: %s,%u(%d)\n", str->name, cnid, inode->i_nlink); - sb = dir->i_sb; - hfs_find_init(HFSPLUS_SB(sb).cat_tree, &fd); + hfs_find_init(HFSPLUS_SB(sb)->cat_tree, &fd); hfsplus_cat_build_key(sb, fd.search_key, cnid, NULL); entry_size = hfsplus_fill_cat_thread(sb, &entry, S_ISDIR(inode->i_mode) ? @@ -234,7 +242,7 @@ err2: int hfsplus_delete_cat(u32 cnid, struct inode *dir, struct qstr *str) { - struct super_block *sb; + struct super_block *sb = dir->i_sb; struct hfs_find_data fd; struct hfsplus_fork_raw fork; struct list_head *pos; @@ -242,8 +250,7 @@ int hfsplus_delete_cat(u32 cnid, struct inode *dir, struct qstr *str) u16 type; dprint(DBG_CAT_MOD, "delete_cat: %s,%u\n", str ? str->name : NULL, cnid); - sb = dir->i_sb; - hfs_find_init(HFSPLUS_SB(sb).cat_tree, &fd); + hfs_find_init(HFSPLUS_SB(sb)->cat_tree, &fd); if (!str) { int len; @@ -279,7 +286,7 @@ int hfsplus_delete_cat(u32 cnid, struct inode *dir, struct qstr *str) hfsplus_free_fork(sb, cnid, &fork, HFSPLUS_TYPE_RSRC); } - list_for_each(pos, &HFSPLUS_I(dir).open_dir_list) { + list_for_each(pos, &HFSPLUS_I(dir)->open_dir_list) { struct hfsplus_readdir_data *rd = list_entry(pos, struct hfsplus_readdir_data, list); if (fd.tree->keycmp(fd.search_key, (void *)&rd->key) < 0) @@ -312,7 +319,7 @@ int hfsplus_rename_cat(u32 cnid, struct inode *src_dir, struct qstr *src_name, struct inode *dst_dir, struct qstr *dst_name) { - struct super_block *sb; + struct super_block *sb = src_dir->i_sb; struct hfs_find_data src_fd, dst_fd; hfsplus_cat_entry entry; int entry_size, type; @@ -320,8 +327,7 @@ int hfsplus_rename_cat(u32 cnid, dprint(DBG_CAT_MOD, "rename_cat: %u - %lu,%s - %lu,%s\n", cnid, src_dir->i_ino, src_name->name, dst_dir->i_ino, dst_name->name); - sb = src_dir->i_sb; - hfs_find_init(HFSPLUS_SB(sb).cat_tree, &src_fd); + hfs_find_init(HFSPLUS_SB(sb)->cat_tree, &src_fd); dst_fd = src_fd; /* find the old dir entry and read the data */ diff --git a/fs/hfsplus/dir.c b/fs/hfsplus/dir.c index 764fd1bdca88..d236d85ec9d7 100644 --- a/fs/hfsplus/dir.c +++ b/fs/hfsplus/dir.c @@ -39,7 +39,7 @@ static struct dentry *hfsplus_lookup(struct inode *dir, struct dentry *dentry, dentry->d_op = &hfsplus_dentry_operations; dentry->d_fsdata = NULL; - hfs_find_init(HFSPLUS_SB(sb).cat_tree, &fd); + hfs_find_init(HFSPLUS_SB(sb)->cat_tree, &fd); hfsplus_cat_build_key(sb, fd.search_key, dir->i_ino, &dentry->d_name); again: err = hfs_brec_read(&fd, &entry, sizeof(entry)); @@ -68,9 +68,9 @@ again: cnid = be32_to_cpu(entry.file.id); if (entry.file.user_info.fdType == cpu_to_be32(HFSP_HARDLINK_TYPE) && entry.file.user_info.fdCreator == cpu_to_be32(HFSP_HFSPLUS_CREATOR) && - (entry.file.create_date == HFSPLUS_I(HFSPLUS_SB(sb).hidden_dir).create_date || - entry.file.create_date == HFSPLUS_I(sb->s_root->d_inode).create_date) && - HFSPLUS_SB(sb).hidden_dir) { + (entry.file.create_date == HFSPLUS_I(HFSPLUS_SB(sb)->hidden_dir)->create_date || + entry.file.create_date == HFSPLUS_I(sb->s_root->d_inode)->create_date) && + HFSPLUS_SB(sb)->hidden_dir) { struct qstr str; char name[32]; @@ -86,7 +86,8 @@ again: linkid = be32_to_cpu(entry.file.permissions.dev); str.len = sprintf(name, "iNode%d", linkid); str.name = name; - hfsplus_cat_build_key(sb, fd.search_key, HFSPLUS_SB(sb).hidden_dir->i_ino, &str); + hfsplus_cat_build_key(sb, fd.search_key, + HFSPLUS_SB(sb)->hidden_dir->i_ino, &str); goto again; } } else if (!dentry->d_fsdata) @@ -101,7 +102,7 @@ again: if (IS_ERR(inode)) return ERR_CAST(inode); if (S_ISREG(inode->i_mode)) - HFSPLUS_I(inode).dev = linkid; + HFSPLUS_I(inode)->linkid = linkid; out: d_add(dentry, inode); return NULL; @@ -124,7 +125,7 @@ static int hfsplus_readdir(struct file *filp, void *dirent, filldir_t filldir) if (filp->f_pos >= inode->i_size) return 0; - hfs_find_init(HFSPLUS_SB(sb).cat_tree, &fd); + hfs_find_init(HFSPLUS_SB(sb)->cat_tree, &fd); hfsplus_cat_build_key(sb, fd.search_key, inode->i_ino, NULL); err = hfs_brec_find(&fd); if (err) @@ -180,8 +181,9 @@ static int hfsplus_readdir(struct file *filp, void *dirent, filldir_t filldir) err = -EIO; goto out; } - if (HFSPLUS_SB(sb).hidden_dir && - HFSPLUS_SB(sb).hidden_dir->i_ino == be32_to_cpu(entry.folder.id)) + if (HFSPLUS_SB(sb)->hidden_dir && + HFSPLUS_SB(sb)->hidden_dir->i_ino == + be32_to_cpu(entry.folder.id)) goto next; if (filldir(dirent, strbuf, len, filp->f_pos, be32_to_cpu(entry.folder.id), DT_DIR)) @@ -217,7 +219,7 @@ static int hfsplus_readdir(struct file *filp, void *dirent, filldir_t filldir) } filp->private_data = rd; rd->file = filp; - list_add(&rd->list, &HFSPLUS_I(inode).open_dir_list); + list_add(&rd->list, &HFSPLUS_I(inode)->open_dir_list); } memcpy(&rd->key, fd.key, sizeof(struct hfsplus_cat_key)); out: @@ -229,38 +231,18 @@ static int hfsplus_dir_release(struct inode *inode, struct file *file) { struct hfsplus_readdir_data *rd = file->private_data; if (rd) { + mutex_lock(&inode->i_mutex); list_del(&rd->list); + mutex_unlock(&inode->i_mutex); kfree(rd); } return 0; } -static int hfsplus_create(struct inode *dir, struct dentry *dentry, int mode, - struct nameidata *nd) -{ - struct inode *inode; - int res; - - inode = hfsplus_new_inode(dir->i_sb, mode); - if (!inode) - return -ENOSPC; - - res = hfsplus_create_cat(inode->i_ino, dir, &dentry->d_name, inode); - if (res) { - inode->i_nlink = 0; - hfsplus_delete_inode(inode); - iput(inode); - return res; - } - hfsplus_instantiate(dentry, inode, inode->i_ino); - mark_inode_dirty(inode); - return 0; -} - static int hfsplus_link(struct dentry *src_dentry, struct inode *dst_dir, struct dentry *dst_dentry) { - struct super_block *sb = dst_dir->i_sb; + struct hfsplus_sb_info *sbi = HFSPLUS_SB(dst_dir->i_sb); struct inode *inode = src_dentry->d_inode; struct inode *src_dir = src_dentry->d_parent->d_inode; struct qstr str; @@ -270,7 +252,10 @@ static int hfsplus_link(struct dentry *src_dentry, struct inode *dst_dir, if (HFSPLUS_IS_RSRC(inode)) return -EPERM; + if (!S_ISREG(inode->i_mode)) + return -EPERM; + mutex_lock(&sbi->vh_mutex); if (inode->i_ino == (u32)(unsigned long)src_dentry->d_fsdata) { for (;;) { get_random_bytes(&id, sizeof(cnid)); @@ -279,40 +264,41 @@ static int hfsplus_link(struct dentry *src_dentry, struct inode *dst_dir, str.len = sprintf(name, "iNode%d", id); res = hfsplus_rename_cat(inode->i_ino, src_dir, &src_dentry->d_name, - HFSPLUS_SB(sb).hidden_dir, &str); + sbi->hidden_dir, &str); if (!res) break; if (res != -EEXIST) - return res; + goto out; } - HFSPLUS_I(inode).dev = id; - cnid = HFSPLUS_SB(sb).next_cnid++; + HFSPLUS_I(inode)->linkid = id; + cnid = sbi->next_cnid++; src_dentry->d_fsdata = (void *)(unsigned long)cnid; res = hfsplus_create_cat(cnid, src_dir, &src_dentry->d_name, inode); if (res) /* panic? */ - return res; - HFSPLUS_SB(sb).file_count++; + goto out; + sbi->file_count++; } - cnid = HFSPLUS_SB(sb).next_cnid++; + cnid = sbi->next_cnid++; res = hfsplus_create_cat(cnid, dst_dir, &dst_dentry->d_name, inode); if (res) - return res; + goto out; inc_nlink(inode); hfsplus_instantiate(dst_dentry, inode, cnid); atomic_inc(&inode->i_count); inode->i_ctime = CURRENT_TIME_SEC; mark_inode_dirty(inode); - HFSPLUS_SB(sb).file_count++; - sb->s_dirt = 1; - - return 0; + sbi->file_count++; + dst_dir->i_sb->s_dirt = 1; +out: + mutex_unlock(&sbi->vh_mutex); + return res; } static int hfsplus_unlink(struct inode *dir, struct dentry *dentry) { - struct super_block *sb = dir->i_sb; + struct hfsplus_sb_info *sbi = HFSPLUS_SB(dir->i_sb); struct inode *inode = dentry->d_inode; struct qstr str; char name[32]; @@ -322,21 +308,22 @@ static int hfsplus_unlink(struct inode *dir, struct dentry *dentry) if (HFSPLUS_IS_RSRC(inode)) return -EPERM; + mutex_lock(&sbi->vh_mutex); cnid = (u32)(unsigned long)dentry->d_fsdata; if (inode->i_ino == cnid && - atomic_read(&HFSPLUS_I(inode).opencnt)) { + atomic_read(&HFSPLUS_I(inode)->opencnt)) { str.name = name; str.len = sprintf(name, "temp%lu", inode->i_ino); res = hfsplus_rename_cat(inode->i_ino, dir, &dentry->d_name, - HFSPLUS_SB(sb).hidden_dir, &str); + sbi->hidden_dir, &str); if (!res) inode->i_flags |= S_DEAD; - return res; + goto out; } res = hfsplus_delete_cat(cnid, dir, &dentry->d_name); if (res) - return res; + goto out; if (inode->i_nlink > 0) drop_nlink(inode); @@ -344,10 +331,10 @@ static int hfsplus_unlink(struct inode *dir, struct dentry *dentry) clear_nlink(inode); if (!inode->i_nlink) { if (inode->i_ino != cnid) { - HFSPLUS_SB(sb).file_count--; - if (!atomic_read(&HFSPLUS_I(inode).opencnt)) { + sbi->file_count--; + if (!atomic_read(&HFSPLUS_I(inode)->opencnt)) { res = hfsplus_delete_cat(inode->i_ino, - HFSPLUS_SB(sb).hidden_dir, + sbi->hidden_dir, NULL); if (!res) hfsplus_delete_inode(inode); @@ -356,107 +343,108 @@ static int hfsplus_unlink(struct inode *dir, struct dentry *dentry) } else hfsplus_delete_inode(inode); } else - HFSPLUS_SB(sb).file_count--; + sbi->file_count--; inode->i_ctime = CURRENT_TIME_SEC; mark_inode_dirty(inode); - +out: + mutex_unlock(&sbi->vh_mutex); return res; } -static int hfsplus_mkdir(struct inode *dir, struct dentry *dentry, int mode) -{ - struct inode *inode; - int res; - - inode = hfsplus_new_inode(dir->i_sb, S_IFDIR | mode); - if (!inode) - return -ENOSPC; - - res = hfsplus_create_cat(inode->i_ino, dir, &dentry->d_name, inode); - if (res) { - inode->i_nlink = 0; - hfsplus_delete_inode(inode); - iput(inode); - return res; - } - hfsplus_instantiate(dentry, inode, inode->i_ino); - mark_inode_dirty(inode); - return 0; -} - static int hfsplus_rmdir(struct inode *dir, struct dentry *dentry) { - struct inode *inode; + struct hfsplus_sb_info *sbi = HFSPLUS_SB(dir->i_sb); + struct inode *inode = dentry->d_inode; int res; - inode = dentry->d_inode; if (inode->i_size != 2) return -ENOTEMPTY; + + mutex_lock(&sbi->vh_mutex); res = hfsplus_delete_cat(inode->i_ino, dir, &dentry->d_name); if (res) - return res; + goto out; clear_nlink(inode); inode->i_ctime = CURRENT_TIME_SEC; hfsplus_delete_inode(inode); mark_inode_dirty(inode); - return 0; +out: + mutex_unlock(&sbi->vh_mutex); + return res; } static int hfsplus_symlink(struct inode *dir, struct dentry *dentry, const char *symname) { - struct super_block *sb; + struct hfsplus_sb_info *sbi = HFSPLUS_SB(dir->i_sb); struct inode *inode; - int res; + int res = -ENOSPC; - sb = dir->i_sb; - inode = hfsplus_new_inode(sb, S_IFLNK | S_IRWXUGO); + mutex_lock(&sbi->vh_mutex); + inode = hfsplus_new_inode(dir->i_sb, S_IFLNK | S_IRWXUGO); if (!inode) - return -ENOSPC; + goto out; res = page_symlink(inode, symname, strlen(symname) + 1); - if (res) { - inode->i_nlink = 0; - hfsplus_delete_inode(inode); - iput(inode); - return res; - } + if (res) + goto out_err; - mark_inode_dirty(inode); res = hfsplus_create_cat(inode->i_ino, dir, &dentry->d_name, inode); + if (res) + goto out_err; - if (!res) { - hfsplus_instantiate(dentry, inode, inode->i_ino); - mark_inode_dirty(inode); - } + hfsplus_instantiate(dentry, inode, inode->i_ino); + mark_inode_dirty(inode); + goto out; +out_err: + inode->i_nlink = 0; + hfsplus_delete_inode(inode); + iput(inode); +out: + mutex_unlock(&sbi->vh_mutex); return res; } static int hfsplus_mknod(struct inode *dir, struct dentry *dentry, int mode, dev_t rdev) { - struct super_block *sb; + struct hfsplus_sb_info *sbi = HFSPLUS_SB(dir->i_sb); struct inode *inode; - int res; + int res = -ENOSPC; - sb = dir->i_sb; - inode = hfsplus_new_inode(sb, mode); + mutex_lock(&sbi->vh_mutex); + inode = hfsplus_new_inode(dir->i_sb, mode); if (!inode) - return -ENOSPC; + goto out; + + if (S_ISBLK(mode) || S_ISCHR(mode) || S_ISFIFO(mode) || S_ISSOCK(mode)) + init_special_inode(inode, mode, rdev); res = hfsplus_create_cat(inode->i_ino, dir, &dentry->d_name, inode); if (res) { inode->i_nlink = 0; hfsplus_delete_inode(inode); iput(inode); - return res; + goto out; } - init_special_inode(inode, mode, rdev); + hfsplus_instantiate(dentry, inode, inode->i_ino); mark_inode_dirty(inode); +out: + mutex_unlock(&sbi->vh_mutex); + return res; +} - return 0; +static int hfsplus_create(struct inode *dir, struct dentry *dentry, int mode, + struct nameidata *nd) +{ + return hfsplus_mknod(dir, dentry, mode, 0); +} + +static int hfsplus_mkdir(struct inode *dir, struct dentry *dentry, int mode) +{ + return hfsplus_mknod(dir, dentry, mode | S_IFDIR, 0); } static int hfsplus_rename(struct inode *old_dir, struct dentry *old_dentry, @@ -466,7 +454,10 @@ static int hfsplus_rename(struct inode *old_dir, struct dentry *old_dentry, /* Unlink destination if it already exists */ if (new_dentry->d_inode) { - res = hfsplus_unlink(new_dir, new_dentry); + if (S_ISDIR(new_dentry->d_inode->i_mode)) + res = hfsplus_rmdir(new_dir, new_dentry); + else + res = hfsplus_unlink(new_dir, new_dentry); if (res) return res; } diff --git a/fs/hfsplus/extents.c b/fs/hfsplus/extents.c index 0022eec63cda..0c9cb1820a52 100644 --- a/fs/hfsplus/extents.c +++ b/fs/hfsplus/extents.c @@ -85,35 +85,49 @@ static u32 hfsplus_ext_lastblock(struct hfsplus_extent *ext) static void __hfsplus_ext_write_extent(struct inode *inode, struct hfs_find_data *fd) { + struct hfsplus_inode_info *hip = HFSPLUS_I(inode); int res; - hfsplus_ext_build_key(fd->search_key, inode->i_ino, HFSPLUS_I(inode).cached_start, - HFSPLUS_IS_RSRC(inode) ? HFSPLUS_TYPE_RSRC : HFSPLUS_TYPE_DATA); + WARN_ON(!mutex_is_locked(&hip->extents_lock)); + + hfsplus_ext_build_key(fd->search_key, inode->i_ino, hip->cached_start, + HFSPLUS_IS_RSRC(inode) ? + HFSPLUS_TYPE_RSRC : HFSPLUS_TYPE_DATA); + res = hfs_brec_find(fd); - if (HFSPLUS_I(inode).flags & HFSPLUS_FLG_EXT_NEW) { + if (hip->flags & HFSPLUS_FLG_EXT_NEW) { if (res != -ENOENT) return; - hfs_brec_insert(fd, HFSPLUS_I(inode).cached_extents, sizeof(hfsplus_extent_rec)); - HFSPLUS_I(inode).flags &= ~(HFSPLUS_FLG_EXT_DIRTY | HFSPLUS_FLG_EXT_NEW); + hfs_brec_insert(fd, hip->cached_extents, + sizeof(hfsplus_extent_rec)); + hip->flags &= ~(HFSPLUS_FLG_EXT_DIRTY | HFSPLUS_FLG_EXT_NEW); } else { if (res) return; - hfs_bnode_write(fd->bnode, HFSPLUS_I(inode).cached_extents, fd->entryoffset, fd->entrylength); - HFSPLUS_I(inode).flags &= ~HFSPLUS_FLG_EXT_DIRTY; + hfs_bnode_write(fd->bnode, hip->cached_extents, + fd->entryoffset, fd->entrylength); + hip->flags &= ~HFSPLUS_FLG_EXT_DIRTY; } } -void hfsplus_ext_write_extent(struct inode *inode) +static void hfsplus_ext_write_extent_locked(struct inode *inode) { - if (HFSPLUS_I(inode).flags & HFSPLUS_FLG_EXT_DIRTY) { + if (HFSPLUS_I(inode)->flags & HFSPLUS_FLG_EXT_DIRTY) { struct hfs_find_data fd; - hfs_find_init(HFSPLUS_SB(inode->i_sb).ext_tree, &fd); + hfs_find_init(HFSPLUS_SB(inode->i_sb)->ext_tree, &fd); __hfsplus_ext_write_extent(inode, &fd); hfs_find_exit(&fd); } } +void hfsplus_ext_write_extent(struct inode *inode) +{ + mutex_lock(&HFSPLUS_I(inode)->extents_lock); + hfsplus_ext_write_extent_locked(inode); + mutex_unlock(&HFSPLUS_I(inode)->extents_lock); +} + static inline int __hfsplus_ext_read_extent(struct hfs_find_data *fd, struct hfsplus_extent *extent, u32 cnid, u32 block, u8 type) @@ -136,33 +150,39 @@ static inline int __hfsplus_ext_read_extent(struct hfs_find_data *fd, static inline int __hfsplus_ext_cache_extent(struct hfs_find_data *fd, struct inode *inode, u32 block) { + struct hfsplus_inode_info *hip = HFSPLUS_I(inode); int res; - if (HFSPLUS_I(inode).flags & HFSPLUS_FLG_EXT_DIRTY) + WARN_ON(!mutex_is_locked(&hip->extents_lock)); + + if (hip->flags & HFSPLUS_FLG_EXT_DIRTY) __hfsplus_ext_write_extent(inode, fd); - res = __hfsplus_ext_read_extent(fd, HFSPLUS_I(inode).cached_extents, inode->i_ino, - block, HFSPLUS_IS_RSRC(inode) ? HFSPLUS_TYPE_RSRC : HFSPLUS_TYPE_DATA); + res = __hfsplus_ext_read_extent(fd, hip->cached_extents, inode->i_ino, + block, HFSPLUS_IS_RSRC(inode) ? + HFSPLUS_TYPE_RSRC : + HFSPLUS_TYPE_DATA); if (!res) { - HFSPLUS_I(inode).cached_start = be32_to_cpu(fd->key->ext.start_block); - HFSPLUS_I(inode).cached_blocks = hfsplus_ext_block_count(HFSPLUS_I(inode).cached_extents); + hip->cached_start = be32_to_cpu(fd->key->ext.start_block); + hip->cached_blocks = hfsplus_ext_block_count(hip->cached_extents); } else { - HFSPLUS_I(inode).cached_start = HFSPLUS_I(inode).cached_blocks = 0; - HFSPLUS_I(inode).flags &= ~(HFSPLUS_FLG_EXT_DIRTY | HFSPLUS_FLG_EXT_NEW); + hip->cached_start = hip->cached_blocks = 0; + hip->flags &= ~(HFSPLUS_FLG_EXT_DIRTY | HFSPLUS_FLG_EXT_NEW); } return res; } static int hfsplus_ext_read_extent(struct inode *inode, u32 block) { + struct hfsplus_inode_info *hip = HFSPLUS_I(inode); struct hfs_find_data fd; int res; - if (block >= HFSPLUS_I(inode).cached_start && - block < HFSPLUS_I(inode).cached_start + HFSPLUS_I(inode).cached_blocks) + if (block >= hip->cached_start && + block < hip->cached_start + hip->cached_blocks) return 0; - hfs_find_init(HFSPLUS_SB(inode->i_sb).ext_tree, &fd); + hfs_find_init(HFSPLUS_SB(inode->i_sb)->ext_tree, &fd); res = __hfsplus_ext_cache_extent(&fd, inode, block); hfs_find_exit(&fd); return res; @@ -172,21 +192,21 @@ static int hfsplus_ext_read_extent(struct inode *inode, u32 block) int hfsplus_get_block(struct inode *inode, sector_t iblock, struct buffer_head *bh_result, int create) { - struct super_block *sb; + struct super_block *sb = inode->i_sb; + struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb); + struct hfsplus_inode_info *hip = HFSPLUS_I(inode); int res = -EIO; u32 ablock, dblock, mask; int shift; - sb = inode->i_sb; - /* Convert inode block to disk allocation block */ - shift = HFSPLUS_SB(sb).alloc_blksz_shift - sb->s_blocksize_bits; - ablock = iblock >> HFSPLUS_SB(sb).fs_shift; + shift = sbi->alloc_blksz_shift - sb->s_blocksize_bits; + ablock = iblock >> sbi->fs_shift; - if (iblock >= HFSPLUS_I(inode).fs_blocks) { - if (iblock > HFSPLUS_I(inode).fs_blocks || !create) + if (iblock >= hip->fs_blocks) { + if (iblock > hip->fs_blocks || !create) return -EIO; - if (ablock >= HFSPLUS_I(inode).alloc_blocks) { + if (ablock >= hip->alloc_blocks) { res = hfsplus_file_extend(inode); if (res) return res; @@ -194,33 +214,33 @@ int hfsplus_get_block(struct inode *inode, sector_t iblock, } else create = 0; - if (ablock < HFSPLUS_I(inode).first_blocks) { - dblock = hfsplus_ext_find_block(HFSPLUS_I(inode).first_extents, ablock); + if (ablock < hip->first_blocks) { + dblock = hfsplus_ext_find_block(hip->first_extents, ablock); goto done; } if (inode->i_ino == HFSPLUS_EXT_CNID) return -EIO; - mutex_lock(&HFSPLUS_I(inode).extents_lock); + mutex_lock(&hip->extents_lock); res = hfsplus_ext_read_extent(inode, ablock); if (!res) { - dblock = hfsplus_ext_find_block(HFSPLUS_I(inode).cached_extents, ablock - - HFSPLUS_I(inode).cached_start); + dblock = hfsplus_ext_find_block(hip->cached_extents, + ablock - hip->cached_start); } else { - mutex_unlock(&HFSPLUS_I(inode).extents_lock); + mutex_unlock(&hip->extents_lock); return -EIO; } - mutex_unlock(&HFSPLUS_I(inode).extents_lock); + mutex_unlock(&hip->extents_lock); done: dprint(DBG_EXTENT, "get_block(%lu): %llu - %u\n", inode->i_ino, (long long)iblock, dblock); - mask = (1 << HFSPLUS_SB(sb).fs_shift) - 1; - map_bh(bh_result, sb, (dblock << HFSPLUS_SB(sb).fs_shift) + HFSPLUS_SB(sb).blockoffset + (iblock & mask)); + mask = (1 << sbi->fs_shift) - 1; + map_bh(bh_result, sb, (dblock << sbi->fs_shift) + sbi->blockoffset + (iblock & mask)); if (create) { set_buffer_new(bh_result); - HFSPLUS_I(inode).phys_size += sb->s_blocksize; - HFSPLUS_I(inode).fs_blocks++; + hip->phys_size += sb->s_blocksize; + hip->fs_blocks++; inode_add_bytes(inode, sb->s_blocksize); mark_inode_dirty(inode); } @@ -327,7 +347,7 @@ int hfsplus_free_fork(struct super_block *sb, u32 cnid, struct hfsplus_fork_raw if (total_blocks == blocks) return 0; - hfs_find_init(HFSPLUS_SB(sb).ext_tree, &fd); + hfs_find_init(HFSPLUS_SB(sb)->ext_tree, &fd); do { res = __hfsplus_ext_read_extent(&fd, ext_entry, cnid, total_blocks, type); @@ -348,29 +368,33 @@ int hfsplus_free_fork(struct super_block *sb, u32 cnid, struct hfsplus_fork_raw int hfsplus_file_extend(struct inode *inode) { struct super_block *sb = inode->i_sb; + struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb); + struct hfsplus_inode_info *hip = HFSPLUS_I(inode); u32 start, len, goal; int res; - if (HFSPLUS_SB(sb).alloc_file->i_size * 8 < HFSPLUS_SB(sb).total_blocks - HFSPLUS_SB(sb).free_blocks + 8) { + if (sbi->alloc_file->i_size * 8 < + sbi->total_blocks - sbi->free_blocks + 8) { // extend alloc file - printk(KERN_ERR "hfs: extend alloc file! (%Lu,%u,%u)\n", HFSPLUS_SB(sb).alloc_file->i_size * 8, - HFSPLUS_SB(sb).total_blocks, HFSPLUS_SB(sb).free_blocks); + printk(KERN_ERR "hfs: extend alloc file! (%Lu,%u,%u)\n", + sbi->alloc_file->i_size * 8, + sbi->total_blocks, sbi->free_blocks); return -ENOSPC; } - mutex_lock(&HFSPLUS_I(inode).extents_lock); - if (HFSPLUS_I(inode).alloc_blocks == HFSPLUS_I(inode).first_blocks) - goal = hfsplus_ext_lastblock(HFSPLUS_I(inode).first_extents); + mutex_lock(&hip->extents_lock); + if (hip->alloc_blocks == hip->first_blocks) + goal = hfsplus_ext_lastblock(hip->first_extents); else { - res = hfsplus_ext_read_extent(inode, HFSPLUS_I(inode).alloc_blocks); + res = hfsplus_ext_read_extent(inode, hip->alloc_blocks); if (res) goto out; - goal = hfsplus_ext_lastblock(HFSPLUS_I(inode).cached_extents); + goal = hfsplus_ext_lastblock(hip->cached_extents); } - len = HFSPLUS_I(inode).clump_blocks; - start = hfsplus_block_allocate(sb, HFSPLUS_SB(sb).total_blocks, goal, &len); - if (start >= HFSPLUS_SB(sb).total_blocks) { + len = hip->clump_blocks; + start = hfsplus_block_allocate(sb, sbi->total_blocks, goal, &len); + if (start >= sbi->total_blocks) { start = hfsplus_block_allocate(sb, goal, 0, &len); if (start >= goal) { res = -ENOSPC; @@ -379,56 +403,56 @@ int hfsplus_file_extend(struct inode *inode) } dprint(DBG_EXTENT, "extend %lu: %u,%u\n", inode->i_ino, start, len); - if (HFSPLUS_I(inode).alloc_blocks <= HFSPLUS_I(inode).first_blocks) { - if (!HFSPLUS_I(inode).first_blocks) { + + if (hip->alloc_blocks <= hip->first_blocks) { + if (!hip->first_blocks) { dprint(DBG_EXTENT, "first extents\n"); /* no extents yet */ - HFSPLUS_I(inode).first_extents[0].start_block = cpu_to_be32(start); - HFSPLUS_I(inode).first_extents[0].block_count = cpu_to_be32(len); + hip->first_extents[0].start_block = cpu_to_be32(start); + hip->first_extents[0].block_count = cpu_to_be32(len); res = 0; } else { /* try to append to extents in inode */ - res = hfsplus_add_extent(HFSPLUS_I(inode).first_extents, - HFSPLUS_I(inode).alloc_blocks, + res = hfsplus_add_extent(hip->first_extents, + hip->alloc_blocks, start, len); if (res == -ENOSPC) goto insert_extent; } if (!res) { - hfsplus_dump_extent(HFSPLUS_I(inode).first_extents); - HFSPLUS_I(inode).first_blocks += len; + hfsplus_dump_extent(hip->first_extents); + hip->first_blocks += len; } } else { - res = hfsplus_add_extent(HFSPLUS_I(inode).cached_extents, - HFSPLUS_I(inode).alloc_blocks - - HFSPLUS_I(inode).cached_start, + res = hfsplus_add_extent(hip->cached_extents, + hip->alloc_blocks - hip->cached_start, start, len); if (!res) { - hfsplus_dump_extent(HFSPLUS_I(inode).cached_extents); - HFSPLUS_I(inode).flags |= HFSPLUS_FLG_EXT_DIRTY; - HFSPLUS_I(inode).cached_blocks += len; + hfsplus_dump_extent(hip->cached_extents); + hip->flags |= HFSPLUS_FLG_EXT_DIRTY; + hip->cached_blocks += len; } else if (res == -ENOSPC) goto insert_extent; } out: - mutex_unlock(&HFSPLUS_I(inode).extents_lock); + mutex_unlock(&hip->extents_lock); if (!res) { - HFSPLUS_I(inode).alloc_blocks += len; + hip->alloc_blocks += len; mark_inode_dirty(inode); } return res; insert_extent: dprint(DBG_EXTENT, "insert new extent\n"); - hfsplus_ext_write_extent(inode); + hfsplus_ext_write_extent_locked(inode); - memset(HFSPLUS_I(inode).cached_extents, 0, sizeof(hfsplus_extent_rec)); - HFSPLUS_I(inode).cached_extents[0].start_block = cpu_to_be32(start); - HFSPLUS_I(inode).cached_extents[0].block_count = cpu_to_be32(len); - hfsplus_dump_extent(HFSPLUS_I(inode).cached_extents); - HFSPLUS_I(inode).flags |= HFSPLUS_FLG_EXT_DIRTY | HFSPLUS_FLG_EXT_NEW; - HFSPLUS_I(inode).cached_start = HFSPLUS_I(inode).alloc_blocks; - HFSPLUS_I(inode).cached_blocks = len; + memset(hip->cached_extents, 0, sizeof(hfsplus_extent_rec)); + hip->cached_extents[0].start_block = cpu_to_be32(start); + hip->cached_extents[0].block_count = cpu_to_be32(len); + hfsplus_dump_extent(hip->cached_extents); + hip->flags |= HFSPLUS_FLG_EXT_DIRTY | HFSPLUS_FLG_EXT_NEW; + hip->cached_start = hip->alloc_blocks; + hip->cached_blocks = len; res = 0; goto out; @@ -437,13 +461,15 @@ insert_extent: void hfsplus_file_truncate(struct inode *inode) { struct super_block *sb = inode->i_sb; + struct hfsplus_inode_info *hip = HFSPLUS_I(inode); struct hfs_find_data fd; u32 alloc_cnt, blk_cnt, start; int res; - dprint(DBG_INODE, "truncate: %lu, %Lu -> %Lu\n", inode->i_ino, - (long long)HFSPLUS_I(inode).phys_size, inode->i_size); - if (inode->i_size > HFSPLUS_I(inode).phys_size) { + dprint(DBG_INODE, "truncate: %lu, %Lu -> %Lu\n", + inode->i_ino, (long long)hip->phys_size, inode->i_size); + + if (inode->i_size > hip->phys_size) { struct address_space *mapping = inode->i_mapping; struct page *page; void *fsdata; @@ -460,47 +486,48 @@ void hfsplus_file_truncate(struct inode *inode) return; mark_inode_dirty(inode); return; - } else if (inode->i_size == HFSPLUS_I(inode).phys_size) + } else if (inode->i_size == hip->phys_size) return; - blk_cnt = (inode->i_size + HFSPLUS_SB(sb).alloc_blksz - 1) >> HFSPLUS_SB(sb).alloc_blksz_shift; - alloc_cnt = HFSPLUS_I(inode).alloc_blocks; + blk_cnt = (inode->i_size + HFSPLUS_SB(sb)->alloc_blksz - 1) >> + HFSPLUS_SB(sb)->alloc_blksz_shift; + alloc_cnt = hip->alloc_blocks; if (blk_cnt == alloc_cnt) goto out; - mutex_lock(&HFSPLUS_I(inode).extents_lock); - hfs_find_init(HFSPLUS_SB(sb).ext_tree, &fd); + mutex_lock(&hip->extents_lock); + hfs_find_init(HFSPLUS_SB(sb)->ext_tree, &fd); while (1) { - if (alloc_cnt == HFSPLUS_I(inode).first_blocks) { - hfsplus_free_extents(sb, HFSPLUS_I(inode).first_extents, + if (alloc_cnt == hip->first_blocks) { + hfsplus_free_extents(sb, hip->first_extents, alloc_cnt, alloc_cnt - blk_cnt); - hfsplus_dump_extent(HFSPLUS_I(inode).first_extents); - HFSPLUS_I(inode).first_blocks = blk_cnt; + hfsplus_dump_extent(hip->first_extents); + hip->first_blocks = blk_cnt; break; } res = __hfsplus_ext_cache_extent(&fd, inode, alloc_cnt); if (res) break; - start = HFSPLUS_I(inode).cached_start; - hfsplus_free_extents(sb, HFSPLUS_I(inode).cached_extents, + start = hip->cached_start; + hfsplus_free_extents(sb, hip->cached_extents, alloc_cnt - start, alloc_cnt - blk_cnt); - hfsplus_dump_extent(HFSPLUS_I(inode).cached_extents); + hfsplus_dump_extent(hip->cached_extents); if (blk_cnt > start) { - HFSPLUS_I(inode).flags |= HFSPLUS_FLG_EXT_DIRTY; + hip->flags |= HFSPLUS_FLG_EXT_DIRTY; break; } alloc_cnt = start; - HFSPLUS_I(inode).cached_start = HFSPLUS_I(inode).cached_blocks = 0; - HFSPLUS_I(inode).flags &= ~(HFSPLUS_FLG_EXT_DIRTY | HFSPLUS_FLG_EXT_NEW); + hip->cached_start = hip->cached_blocks = 0; + hip->flags &= ~(HFSPLUS_FLG_EXT_DIRTY | HFSPLUS_FLG_EXT_NEW); hfs_brec_remove(&fd); } hfs_find_exit(&fd); - mutex_unlock(&HFSPLUS_I(inode).extents_lock); + mutex_unlock(&hip->extents_lock); - HFSPLUS_I(inode).alloc_blocks = blk_cnt; + hip->alloc_blocks = blk_cnt; out: - HFSPLUS_I(inode).phys_size = inode->i_size; - HFSPLUS_I(inode).fs_blocks = (inode->i_size + sb->s_blocksize - 1) >> sb->s_blocksize_bits; - inode_set_bytes(inode, HFSPLUS_I(inode).fs_blocks << sb->s_blocksize_bits); + hip->phys_size = inode->i_size; + hip->fs_blocks = (inode->i_size + sb->s_blocksize - 1) >> sb->s_blocksize_bits; + inode_set_bytes(inode, hip->fs_blocks << sb->s_blocksize_bits); mark_inode_dirty(inode); } diff --git a/fs/hfsplus/hfsplus_fs.h b/fs/hfsplus/hfsplus_fs.h index dc856be3c2b0..cb3653efb57a 100644 --- a/fs/hfsplus/hfsplus_fs.h +++ b/fs/hfsplus/hfsplus_fs.h @@ -62,7 +62,7 @@ struct hfs_btree { unsigned int depth; //unsigned int map1_size, map_size; - struct semaphore tree_lock; + struct mutex tree_lock; unsigned int pages_per_bnode; spinlock_t hash_lock; @@ -121,16 +121,21 @@ struct hfsplus_sb_info { u32 sect_count; int fs_shift; - /* Stuff in host order from Vol Header */ + /* immutable data from the volume header */ u32 alloc_blksz; int alloc_blksz_shift; u32 total_blocks; + u32 data_clump_blocks, rsrc_clump_blocks; + + /* mutable data from the volume header, protected by alloc_mutex */ u32 free_blocks; - u32 next_alloc; + struct mutex alloc_mutex; + + /* mutable data from the volume header, protected by vh_mutex */ u32 next_cnid; u32 file_count; u32 folder_count; - u32 data_clump_blocks, rsrc_clump_blocks; + struct mutex vh_mutex; /* Config options */ u32 creator; @@ -143,40 +148,50 @@ struct hfsplus_sb_info { int part, session; unsigned long flags; - - struct hlist_head rsrc_inodes; }; -#define HFSPLUS_SB_WRITEBACKUP 0x0001 -#define HFSPLUS_SB_NODECOMPOSE 0x0002 -#define HFSPLUS_SB_FORCE 0x0004 -#define HFSPLUS_SB_HFSX 0x0008 -#define HFSPLUS_SB_CASEFOLD 0x0010 +#define HFSPLUS_SB_WRITEBACKUP 0 +#define HFSPLUS_SB_NODECOMPOSE 1 +#define HFSPLUS_SB_FORCE 2 +#define HFSPLUS_SB_HFSX 3 +#define HFSPLUS_SB_CASEFOLD 4 struct hfsplus_inode_info { - struct mutex extents_lock; - u32 clump_blocks, alloc_blocks; - sector_t fs_blocks; - /* Allocation extents from catalog record or volume header */ - hfsplus_extent_rec first_extents; - u32 first_blocks; - hfsplus_extent_rec cached_extents; - u32 cached_start, cached_blocks; atomic_t opencnt; - struct inode *rsrc_inode; + /* + * Extent allocation information, protected by extents_lock. + */ + u32 first_blocks; + u32 clump_blocks; + u32 alloc_blocks; + u32 cached_start; + u32 cached_blocks; + hfsplus_extent_rec first_extents; + hfsplus_extent_rec cached_extents; unsigned long flags; + struct mutex extents_lock; + /* + * Immutable data. + */ + struct inode *rsrc_inode; __be32 create_date; - /* Device number in hfsplus_permissions in catalog */ - u32 dev; - /* BSD system and user file flags */ - u8 rootflags; - u8 userflags; + /* + * Protected by sbi->vh_mutex. + */ + u32 linkid; + + /* + * Protected by i_mutex. + */ + sector_t fs_blocks; + u8 userflags; /* BSD user file flags */ struct list_head open_dir_list; loff_t phys_size; + struct inode vfs_inode; }; @@ -184,8 +199,8 @@ struct hfsplus_inode_info { #define HFSPLUS_FLG_EXT_DIRTY 0x0002 #define HFSPLUS_FLG_EXT_NEW 0x0004 -#define HFSPLUS_IS_DATA(inode) (!(HFSPLUS_I(inode).flags & HFSPLUS_FLG_RSRC)) -#define HFSPLUS_IS_RSRC(inode) (HFSPLUS_I(inode).flags & HFSPLUS_FLG_RSRC) +#define HFSPLUS_IS_DATA(inode) (!(HFSPLUS_I(inode)->flags & HFSPLUS_FLG_RSRC)) +#define HFSPLUS_IS_RSRC(inode) (HFSPLUS_I(inode)->flags & HFSPLUS_FLG_RSRC) struct hfs_find_data { /* filled by caller */ @@ -311,6 +326,7 @@ int hfsplus_create_cat(u32, struct inode *, struct qstr *, struct inode *); int hfsplus_delete_cat(u32, struct inode *, struct qstr *); int hfsplus_rename_cat(u32, struct inode *, struct qstr *, struct inode *, struct qstr *); +void hfsplus_cat_set_perms(struct inode *inode, struct hfsplus_perm *perms); /* dir.c */ extern const struct inode_operations hfsplus_dir_inode_operations; @@ -372,26 +388,15 @@ int hfsplus_read_wrapper(struct super_block *); int hfs_part_find(struct super_block *, sector_t *, sector_t *); /* access macros */ -/* static inline struct hfsplus_sb_info *HFSPLUS_SB(struct super_block *sb) { return sb->s_fs_info; } + static inline struct hfsplus_inode_info *HFSPLUS_I(struct inode *inode) { return list_entry(inode, struct hfsplus_inode_info, vfs_inode); } -*/ -#define HFSPLUS_SB(super) (*(struct hfsplus_sb_info *)(super)->s_fs_info) -#define HFSPLUS_I(inode) (*list_entry(inode, struct hfsplus_inode_info, vfs_inode)) - -#if 1 -#define hfsplus_kmap(p) ({ struct page *__p = (p); kmap(__p); }) -#define hfsplus_kunmap(p) ({ struct page *__p = (p); kunmap(__p); __p; }) -#else -#define hfsplus_kmap(p) kmap(p) -#define hfsplus_kunmap(p) kunmap(p) -#endif #define sb_bread512(sb, sec, data) ({ \ struct buffer_head *__bh; \ @@ -419,6 +424,4 @@ static inline struct hfsplus_inode_info *HFSPLUS_I(struct inode *inode) #define hfsp_ut2mt(t) __hfsp_ut2mt((t).tv_sec) #define hfsp_now2mt() __hfsp_ut2mt(get_seconds()) -#define kdev_t_to_nr(x) (x) - #endif diff --git a/fs/hfsplus/hfsplus_raw.h b/fs/hfsplus/hfsplus_raw.h index fe99fe8db61a..6892899fd6fb 100644 --- a/fs/hfsplus/hfsplus_raw.h +++ b/fs/hfsplus/hfsplus_raw.h @@ -200,6 +200,7 @@ struct hfsplus_cat_key { struct hfsplus_unistr name; } __packed; +#define HFSPLUS_CAT_KEYLEN (sizeof(struct hfsplus_cat_key)) /* Structs from hfs.h */ struct hfsp_point { @@ -323,7 +324,7 @@ struct hfsplus_ext_key { __be32 start_block; } __packed; -#define HFSPLUS_EXT_KEYLEN 12 +#define HFSPLUS_EXT_KEYLEN sizeof(struct hfsplus_ext_key) /* HFS+ generic BTree key */ typedef union { diff --git a/fs/hfsplus/inode.c b/fs/hfsplus/inode.c index c5a979d62c65..78449280dae0 100644 --- a/fs/hfsplus/inode.c +++ b/fs/hfsplus/inode.c @@ -36,7 +36,7 @@ static int hfsplus_write_begin(struct file *file, struct address_space *mapping, *pagep = NULL; ret = cont_write_begin(file, mapping, pos, len, flags, pagep, fsdata, hfsplus_get_block, - &HFSPLUS_I(mapping->host).phys_size); + &HFSPLUS_I(mapping->host)->phys_size); if (unlikely(ret)) { loff_t isize = mapping->host->i_size; if (pos + len > isize) @@ -62,13 +62,13 @@ static int hfsplus_releasepage(struct page *page, gfp_t mask) switch (inode->i_ino) { case HFSPLUS_EXT_CNID: - tree = HFSPLUS_SB(sb).ext_tree; + tree = HFSPLUS_SB(sb)->ext_tree; break; case HFSPLUS_CAT_CNID: - tree = HFSPLUS_SB(sb).cat_tree; + tree = HFSPLUS_SB(sb)->cat_tree; break; case HFSPLUS_ATTR_CNID: - tree = HFSPLUS_SB(sb).attr_tree; + tree = HFSPLUS_SB(sb)->attr_tree; break; default: BUG(); @@ -172,12 +172,13 @@ static struct dentry *hfsplus_file_lookup(struct inode *dir, struct dentry *dent struct hfs_find_data fd; struct super_block *sb = dir->i_sb; struct inode *inode = NULL; + struct hfsplus_inode_info *hip; int err; if (HFSPLUS_IS_RSRC(dir) || strcmp(dentry->d_name.name, "rsrc")) goto out; - inode = HFSPLUS_I(dir).rsrc_inode; + inode = HFSPLUS_I(dir)->rsrc_inode; if (inode) goto out; @@ -185,12 +186,13 @@ static struct dentry *hfsplus_file_lookup(struct inode *dir, struct dentry *dent if (!inode) return ERR_PTR(-ENOMEM); + hip = HFSPLUS_I(inode); inode->i_ino = dir->i_ino; - INIT_LIST_HEAD(&HFSPLUS_I(inode).open_dir_list); - mutex_init(&HFSPLUS_I(inode).extents_lock); - HFSPLUS_I(inode).flags = HFSPLUS_FLG_RSRC; + INIT_LIST_HEAD(&hip->open_dir_list); + mutex_init(&hip->extents_lock); + hip->flags = HFSPLUS_FLG_RSRC; - hfs_find_init(HFSPLUS_SB(sb).cat_tree, &fd); + hfs_find_init(HFSPLUS_SB(sb)->cat_tree, &fd); err = hfsplus_find_cat(sb, dir->i_ino, &fd); if (!err) err = hfsplus_cat_read_inode(inode, &fd); @@ -199,10 +201,18 @@ static struct dentry *hfsplus_file_lookup(struct inode *dir, struct dentry *dent iput(inode); return ERR_PTR(err); } - HFSPLUS_I(inode).rsrc_inode = dir; - HFSPLUS_I(dir).rsrc_inode = inode; + hip->rsrc_inode = dir; + HFSPLUS_I(dir)->rsrc_inode = inode; igrab(dir); - hlist_add_head(&inode->i_hash, &HFSPLUS_SB(sb).rsrc_inodes); + + /* + * __mark_inode_dirty expects inodes to be hashed. Since we don't + * want resource fork inodes in the regular inode space, we make them + * appear hashed, but do not put on any lists. hlist_del() + * will work fine and require no locking. + */ + inode->i_hash.pprev = &inode->i_hash.next; + mark_inode_dirty(inode); out: d_add(dentry, inode); @@ -211,30 +221,27 @@ out: static void hfsplus_get_perms(struct inode *inode, struct hfsplus_perm *perms, int dir) { - struct super_block *sb = inode->i_sb; + struct hfsplus_sb_info *sbi = HFSPLUS_SB(inode->i_sb); u16 mode; mode = be16_to_cpu(perms->mode); inode->i_uid = be32_to_cpu(perms->owner); if (!inode->i_uid && !mode) - inode->i_uid = HFSPLUS_SB(sb).uid; + inode->i_uid = sbi->uid; inode->i_gid = be32_to_cpu(perms->group); if (!inode->i_gid && !mode) - inode->i_gid = HFSPLUS_SB(sb).gid; + inode->i_gid = sbi->gid; if (dir) { - mode = mode ? (mode & S_IALLUGO) : - (S_IRWXUGO & ~(HFSPLUS_SB(sb).umask)); + mode = mode ? (mode & S_IALLUGO) : (S_IRWXUGO & ~(sbi->umask)); mode |= S_IFDIR; } else if (!mode) - mode = S_IFREG | ((S_IRUGO|S_IWUGO) & - ~(HFSPLUS_SB(sb).umask)); + mode = S_IFREG | ((S_IRUGO|S_IWUGO) & ~(sbi->umask)); inode->i_mode = mode; - HFSPLUS_I(inode).rootflags = perms->rootflags; - HFSPLUS_I(inode).userflags = perms->userflags; + HFSPLUS_I(inode)->userflags = perms->userflags; if (perms->rootflags & HFSPLUS_FLG_IMMUTABLE) inode->i_flags |= S_IMMUTABLE; else @@ -245,30 +252,13 @@ static void hfsplus_get_perms(struct inode *inode, struct hfsplus_perm *perms, i inode->i_flags &= ~S_APPEND; } -static void hfsplus_set_perms(struct inode *inode, struct hfsplus_perm *perms) -{ - if (inode->i_flags & S_IMMUTABLE) - perms->rootflags |= HFSPLUS_FLG_IMMUTABLE; - else - perms->rootflags &= ~HFSPLUS_FLG_IMMUTABLE; - if (inode->i_flags & S_APPEND) - perms->rootflags |= HFSPLUS_FLG_APPEND; - else - perms->rootflags &= ~HFSPLUS_FLG_APPEND; - perms->userflags = HFSPLUS_I(inode).userflags; - perms->mode = cpu_to_be16(inode->i_mode); - perms->owner = cpu_to_be32(inode->i_uid); - perms->group = cpu_to_be32(inode->i_gid); - perms->dev = cpu_to_be32(HFSPLUS_I(inode).dev); -} - static int hfsplus_file_open(struct inode *inode, struct file *file) { if (HFSPLUS_IS_RSRC(inode)) - inode = HFSPLUS_I(inode).rsrc_inode; + inode = HFSPLUS_I(inode)->rsrc_inode; if (!(file->f_flags & O_LARGEFILE) && i_size_read(inode) > MAX_NON_LFS) return -EOVERFLOW; - atomic_inc(&HFSPLUS_I(inode).opencnt); + atomic_inc(&HFSPLUS_I(inode)->opencnt); return 0; } @@ -277,12 +267,13 @@ static int hfsplus_file_release(struct inode *inode, struct file *file) struct super_block *sb = inode->i_sb; if (HFSPLUS_IS_RSRC(inode)) - inode = HFSPLUS_I(inode).rsrc_inode; - if (atomic_dec_and_test(&HFSPLUS_I(inode).opencnt)) { + inode = HFSPLUS_I(inode)->rsrc_inode; + if (atomic_dec_and_test(&HFSPLUS_I(inode)->opencnt)) { mutex_lock(&inode->i_mutex); hfsplus_file_truncate(inode); if (inode->i_flags & S_DEAD) { - hfsplus_delete_cat(inode->i_ino, HFSPLUS_SB(sb).hidden_dir, NULL); + hfsplus_delete_cat(inode->i_ino, + HFSPLUS_SB(sb)->hidden_dir, NULL); hfsplus_delete_inode(inode); } mutex_unlock(&inode->i_mutex); @@ -361,47 +352,52 @@ static const struct file_operations hfsplus_file_operations = { struct inode *hfsplus_new_inode(struct super_block *sb, int mode) { + struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb); struct inode *inode = new_inode(sb); + struct hfsplus_inode_info *hip; + if (!inode) return NULL; - inode->i_ino = HFSPLUS_SB(sb).next_cnid++; + inode->i_ino = sbi->next_cnid++; inode->i_mode = mode; inode->i_uid = current_fsuid(); inode->i_gid = current_fsgid(); inode->i_nlink = 1; inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME_SEC; - INIT_LIST_HEAD(&HFSPLUS_I(inode).open_dir_list); - mutex_init(&HFSPLUS_I(inode).extents_lock); - atomic_set(&HFSPLUS_I(inode).opencnt, 0); - HFSPLUS_I(inode).flags = 0; - memset(HFSPLUS_I(inode).first_extents, 0, sizeof(hfsplus_extent_rec)); - memset(HFSPLUS_I(inode).cached_extents, 0, sizeof(hfsplus_extent_rec)); - HFSPLUS_I(inode).alloc_blocks = 0; - HFSPLUS_I(inode).first_blocks = 0; - HFSPLUS_I(inode).cached_start = 0; - HFSPLUS_I(inode).cached_blocks = 0; - HFSPLUS_I(inode).phys_size = 0; - HFSPLUS_I(inode).fs_blocks = 0; - HFSPLUS_I(inode).rsrc_inode = NULL; + + hip = HFSPLUS_I(inode); + INIT_LIST_HEAD(&hip->open_dir_list); + mutex_init(&hip->extents_lock); + atomic_set(&hip->opencnt, 0); + hip->flags = 0; + memset(hip->first_extents, 0, sizeof(hfsplus_extent_rec)); + memset(hip->cached_extents, 0, sizeof(hfsplus_extent_rec)); + hip->alloc_blocks = 0; + hip->first_blocks = 0; + hip->cached_start = 0; + hip->cached_blocks = 0; + hip->phys_size = 0; + hip->fs_blocks = 0; + hip->rsrc_inode = NULL; if (S_ISDIR(inode->i_mode)) { inode->i_size = 2; - HFSPLUS_SB(sb).folder_count++; + sbi->folder_count++; inode->i_op = &hfsplus_dir_inode_operations; inode->i_fop = &hfsplus_dir_operations; } else if (S_ISREG(inode->i_mode)) { - HFSPLUS_SB(sb).file_count++; + sbi->file_count++; inode->i_op = &hfsplus_file_inode_operations; inode->i_fop = &hfsplus_file_operations; inode->i_mapping->a_ops = &hfsplus_aops; - HFSPLUS_I(inode).clump_blocks = HFSPLUS_SB(sb).data_clump_blocks; + hip->clump_blocks = sbi->data_clump_blocks; } else if (S_ISLNK(inode->i_mode)) { - HFSPLUS_SB(sb).file_count++; + sbi->file_count++; inode->i_op = &page_symlink_inode_operations; inode->i_mapping->a_ops = &hfsplus_aops; - HFSPLUS_I(inode).clump_blocks = 1; + hip->clump_blocks = 1; } else - HFSPLUS_SB(sb).file_count++; + sbi->file_count++; insert_inode_hash(inode); mark_inode_dirty(inode); sb->s_dirt = 1; @@ -414,11 +410,11 @@ void hfsplus_delete_inode(struct inode *inode) struct super_block *sb = inode->i_sb; if (S_ISDIR(inode->i_mode)) { - HFSPLUS_SB(sb).folder_count--; + HFSPLUS_SB(sb)->folder_count--; sb->s_dirt = 1; return; } - HFSPLUS_SB(sb).file_count--; + HFSPLUS_SB(sb)->file_count--; if (S_ISREG(inode->i_mode)) { if (!inode->i_nlink) { inode->i_size = 0; @@ -434,34 +430,39 @@ void hfsplus_delete_inode(struct inode *inode) void hfsplus_inode_read_fork(struct inode *inode, struct hfsplus_fork_raw *fork) { struct super_block *sb = inode->i_sb; + struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb); + struct hfsplus_inode_info *hip = HFSPLUS_I(inode); u32 count; int i; - memcpy(&HFSPLUS_I(inode).first_extents, &fork->extents, - sizeof(hfsplus_extent_rec)); + memcpy(&hip->first_extents, &fork->extents, sizeof(hfsplus_extent_rec)); for (count = 0, i = 0; i < 8; i++) count += be32_to_cpu(fork->extents[i].block_count); - HFSPLUS_I(inode).first_blocks = count; - memset(HFSPLUS_I(inode).cached_extents, 0, sizeof(hfsplus_extent_rec)); - HFSPLUS_I(inode).cached_start = 0; - HFSPLUS_I(inode).cached_blocks = 0; - - HFSPLUS_I(inode).alloc_blocks = be32_to_cpu(fork->total_blocks); - inode->i_size = HFSPLUS_I(inode).phys_size = be64_to_cpu(fork->total_size); - HFSPLUS_I(inode).fs_blocks = (inode->i_size + sb->s_blocksize - 1) >> sb->s_blocksize_bits; - inode_set_bytes(inode, HFSPLUS_I(inode).fs_blocks << sb->s_blocksize_bits); - HFSPLUS_I(inode).clump_blocks = be32_to_cpu(fork->clump_size) >> HFSPLUS_SB(sb).alloc_blksz_shift; - if (!HFSPLUS_I(inode).clump_blocks) - HFSPLUS_I(inode).clump_blocks = HFSPLUS_IS_RSRC(inode) ? HFSPLUS_SB(sb).rsrc_clump_blocks : - HFSPLUS_SB(sb).data_clump_blocks; + hip->first_blocks = count; + memset(hip->cached_extents, 0, sizeof(hfsplus_extent_rec)); + hip->cached_start = 0; + hip->cached_blocks = 0; + + hip->alloc_blocks = be32_to_cpu(fork->total_blocks); + hip->phys_size = inode->i_size = be64_to_cpu(fork->total_size); + hip->fs_blocks = + (inode->i_size + sb->s_blocksize - 1) >> sb->s_blocksize_bits; + inode_set_bytes(inode, hip->fs_blocks << sb->s_blocksize_bits); + hip->clump_blocks = + be32_to_cpu(fork->clump_size) >> sbi->alloc_blksz_shift; + if (!hip->clump_blocks) { + hip->clump_blocks = HFSPLUS_IS_RSRC(inode) ? + sbi->rsrc_clump_blocks : + sbi->data_clump_blocks; + } } void hfsplus_inode_write_fork(struct inode *inode, struct hfsplus_fork_raw *fork) { - memcpy(&fork->extents, &HFSPLUS_I(inode).first_extents, + memcpy(&fork->extents, &HFSPLUS_I(inode)->first_extents, sizeof(hfsplus_extent_rec)); fork->total_size = cpu_to_be64(inode->i_size); - fork->total_blocks = cpu_to_be32(HFSPLUS_I(inode).alloc_blocks); + fork->total_blocks = cpu_to_be32(HFSPLUS_I(inode)->alloc_blocks); } int hfsplus_cat_read_inode(struct inode *inode, struct hfs_find_data *fd) @@ -472,7 +473,7 @@ int hfsplus_cat_read_inode(struct inode *inode, struct hfs_find_data *fd) type = hfs_bnode_read_u16(fd->bnode, fd->entryoffset); - HFSPLUS_I(inode).dev = 0; + HFSPLUS_I(inode)->linkid = 0; if (type == HFSPLUS_FOLDER) { struct hfsplus_cat_folder *folder = &entry.folder; @@ -486,8 +487,8 @@ int hfsplus_cat_read_inode(struct inode *inode, struct hfs_find_data *fd) inode->i_atime = hfsp_mt2ut(folder->access_date); inode->i_mtime = hfsp_mt2ut(folder->content_mod_date); inode->i_ctime = hfsp_mt2ut(folder->attribute_mod_date); - HFSPLUS_I(inode).create_date = folder->create_date; - HFSPLUS_I(inode).fs_blocks = 0; + HFSPLUS_I(inode)->create_date = folder->create_date; + HFSPLUS_I(inode)->fs_blocks = 0; inode->i_op = &hfsplus_dir_inode_operations; inode->i_fop = &hfsplus_dir_operations; } else if (type == HFSPLUS_FILE) { @@ -518,7 +519,7 @@ int hfsplus_cat_read_inode(struct inode *inode, struct hfs_find_data *fd) inode->i_atime = hfsp_mt2ut(file->access_date); inode->i_mtime = hfsp_mt2ut(file->content_mod_date); inode->i_ctime = hfsp_mt2ut(file->attribute_mod_date); - HFSPLUS_I(inode).create_date = file->create_date; + HFSPLUS_I(inode)->create_date = file->create_date; } else { printk(KERN_ERR "hfs: bad catalog entry used to create inode\n"); res = -EIO; @@ -533,12 +534,12 @@ int hfsplus_cat_write_inode(struct inode *inode) hfsplus_cat_entry entry; if (HFSPLUS_IS_RSRC(inode)) - main_inode = HFSPLUS_I(inode).rsrc_inode; + main_inode = HFSPLUS_I(inode)->rsrc_inode; if (!main_inode->i_nlink) return 0; - if (hfs_find_init(HFSPLUS_SB(main_inode->i_sb).cat_tree, &fd)) + if (hfs_find_init(HFSPLUS_SB(main_inode->i_sb)->cat_tree, &fd)) /* panic? */ return -EIO; @@ -554,7 +555,7 @@ int hfsplus_cat_write_inode(struct inode *inode) hfs_bnode_read(fd.bnode, &entry, fd.entryoffset, sizeof(struct hfsplus_cat_folder)); /* simple node checks? */ - hfsplus_set_perms(inode, &folder->permissions); + hfsplus_cat_set_perms(inode, &folder->permissions); folder->access_date = hfsp_ut2mt(inode->i_atime); folder->content_mod_date = hfsp_ut2mt(inode->i_mtime); folder->attribute_mod_date = hfsp_ut2mt(inode->i_ctime); @@ -576,11 +577,7 @@ int hfsplus_cat_write_inode(struct inode *inode) hfs_bnode_read(fd.bnode, &entry, fd.entryoffset, sizeof(struct hfsplus_cat_file)); hfsplus_inode_write_fork(inode, &file->data_fork); - if (S_ISREG(inode->i_mode)) - HFSPLUS_I(inode).dev = inode->i_nlink; - if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) - HFSPLUS_I(inode).dev = kdev_t_to_nr(inode->i_rdev); - hfsplus_set_perms(inode, &file->permissions); + hfsplus_cat_set_perms(inode, &file->permissions); if ((file->permissions.rootflags | file->permissions.userflags) & HFSPLUS_FLG_IMMUTABLE) file->flags |= cpu_to_be16(HFSPLUS_FILE_LOCKED); else diff --git a/fs/hfsplus/ioctl.c b/fs/hfsplus/ioctl.c index ac405f099026..5b4667e08ef7 100644 --- a/fs/hfsplus/ioctl.c +++ b/fs/hfsplus/ioctl.c @@ -17,83 +17,98 @@ #include <linux/mount.h> #include <linux/sched.h> #include <linux/xattr.h> -#include <linux/smp_lock.h> #include <asm/uaccess.h> #include "hfsplus_fs.h" -long hfsplus_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) +static int hfsplus_ioctl_getflags(struct file *file, int __user *user_flags) { - struct inode *inode = filp->f_path.dentry->d_inode; + struct inode *inode = file->f_path.dentry->d_inode; + struct hfsplus_inode_info *hip = HFSPLUS_I(inode); + unsigned int flags = 0; + + if (inode->i_flags & S_IMMUTABLE) + flags |= FS_IMMUTABLE_FL; + if (inode->i_flags |= S_APPEND) + flags |= FS_APPEND_FL; + if (hip->userflags & HFSPLUS_FLG_NODUMP) + flags |= FS_NODUMP_FL; + + return put_user(flags, user_flags); +} + +static int hfsplus_ioctl_setflags(struct file *file, int __user *user_flags) +{ + struct inode *inode = file->f_path.dentry->d_inode; + struct hfsplus_inode_info *hip = HFSPLUS_I(inode); unsigned int flags; + int err = 0; - lock_kernel(); - switch (cmd) { - case HFSPLUS_IOC_EXT2_GETFLAGS: - flags = 0; - if (HFSPLUS_I(inode).rootflags & HFSPLUS_FLG_IMMUTABLE) - flags |= FS_IMMUTABLE_FL; /* EXT2_IMMUTABLE_FL */ - if (HFSPLUS_I(inode).rootflags & HFSPLUS_FLG_APPEND) - flags |= FS_APPEND_FL; /* EXT2_APPEND_FL */ - if (HFSPLUS_I(inode).userflags & HFSPLUS_FLG_NODUMP) - flags |= FS_NODUMP_FL; /* EXT2_NODUMP_FL */ - return put_user(flags, (int __user *)arg); - case HFSPLUS_IOC_EXT2_SETFLAGS: { - int err = 0; - err = mnt_want_write(filp->f_path.mnt); - if (err) { - unlock_kernel(); - return err; - } + err = mnt_want_write(file->f_path.mnt); + if (err) + goto out; - if (!is_owner_or_cap(inode)) { - err = -EACCES; - goto setflags_out; - } - if (get_user(flags, (int __user *)arg)) { - err = -EFAULT; - goto setflags_out; - } - if (flags & (FS_IMMUTABLE_FL|FS_APPEND_FL) || - HFSPLUS_I(inode).rootflags & (HFSPLUS_FLG_IMMUTABLE|HFSPLUS_FLG_APPEND)) { - if (!capable(CAP_LINUX_IMMUTABLE)) { - err = -EPERM; - goto setflags_out; - } - } + if (!is_owner_or_cap(inode)) { + err = -EACCES; + goto out_drop_write; + } - /* don't silently ignore unsupported ext2 flags */ - if (flags & ~(FS_IMMUTABLE_FL|FS_APPEND_FL|FS_NODUMP_FL)) { - err = -EOPNOTSUPP; - goto setflags_out; - } - if (flags & FS_IMMUTABLE_FL) { /* EXT2_IMMUTABLE_FL */ - inode->i_flags |= S_IMMUTABLE; - HFSPLUS_I(inode).rootflags |= HFSPLUS_FLG_IMMUTABLE; - } else { - inode->i_flags &= ~S_IMMUTABLE; - HFSPLUS_I(inode).rootflags &= ~HFSPLUS_FLG_IMMUTABLE; - } - if (flags & FS_APPEND_FL) { /* EXT2_APPEND_FL */ - inode->i_flags |= S_APPEND; - HFSPLUS_I(inode).rootflags |= HFSPLUS_FLG_APPEND; - } else { - inode->i_flags &= ~S_APPEND; - HFSPLUS_I(inode).rootflags &= ~HFSPLUS_FLG_APPEND; + if (get_user(flags, user_flags)) { + err = -EFAULT; + goto out_drop_write; + } + + mutex_lock(&inode->i_mutex); + + if ((flags & (FS_IMMUTABLE_FL|FS_APPEND_FL)) || + inode->i_flags & (S_IMMUTABLE|S_APPEND)) { + if (!capable(CAP_LINUX_IMMUTABLE)) { + err = -EPERM; + goto out_unlock_inode; } - if (flags & FS_NODUMP_FL) /* EXT2_NODUMP_FL */ - HFSPLUS_I(inode).userflags |= HFSPLUS_FLG_NODUMP; - else - HFSPLUS_I(inode).userflags &= ~HFSPLUS_FLG_NODUMP; - - inode->i_ctime = CURRENT_TIME_SEC; - mark_inode_dirty(inode); -setflags_out: - mnt_drop_write(filp->f_path.mnt); - unlock_kernel(); - return err; } + + /* don't silently ignore unsupported ext2 flags */ + if (flags & ~(FS_IMMUTABLE_FL|FS_APPEND_FL|FS_NODUMP_FL)) { + err = -EOPNOTSUPP; + goto out_unlock_inode; + } + + if (flags & FS_IMMUTABLE_FL) + inode->i_flags |= S_IMMUTABLE; + else + inode->i_flags &= ~S_IMMUTABLE; + + if (flags & FS_APPEND_FL) + inode->i_flags |= S_APPEND; + else + inode->i_flags &= ~S_APPEND; + + if (flags & FS_NODUMP_FL) + hip->userflags |= HFSPLUS_FLG_NODUMP; + else + hip->userflags &= ~HFSPLUS_FLG_NODUMP; + + inode->i_ctime = CURRENT_TIME_SEC; + mark_inode_dirty(inode); + +out_unlock_inode: + mutex_lock(&inode->i_mutex); +out_drop_write: + mnt_drop_write(file->f_path.mnt); +out: + return err; +} + +long hfsplus_ioctl(struct file *file, unsigned int cmd, unsigned long arg) +{ + void __user *argp = (void __user *)arg; + + switch (cmd) { + case HFSPLUS_IOC_EXT2_GETFLAGS: + return hfsplus_ioctl_getflags(file, argp); + case HFSPLUS_IOC_EXT2_SETFLAGS: + return hfsplus_ioctl_setflags(file, argp); default: - unlock_kernel(); return -ENOTTY; } } @@ -110,7 +125,7 @@ int hfsplus_setxattr(struct dentry *dentry, const char *name, if (!S_ISREG(inode->i_mode) || HFSPLUS_IS_RSRC(inode)) return -EOPNOTSUPP; - res = hfs_find_init(HFSPLUS_SB(inode->i_sb).cat_tree, &fd); + res = hfs_find_init(HFSPLUS_SB(inode->i_sb)->cat_tree, &fd); if (res) return res; res = hfsplus_find_cat(inode->i_sb, inode->i_ino, &fd); @@ -153,7 +168,7 @@ ssize_t hfsplus_getxattr(struct dentry *dentry, const char *name, return -EOPNOTSUPP; if (size) { - res = hfs_find_init(HFSPLUS_SB(inode->i_sb).cat_tree, &fd); + res = hfs_find_init(HFSPLUS_SB(inode->i_sb)->cat_tree, &fd); if (res) return res; res = hfsplus_find_cat(inode->i_sb, inode->i_ino, &fd); @@ -177,7 +192,7 @@ ssize_t hfsplus_getxattr(struct dentry *dentry, const char *name, } else res = size ? -ERANGE : 4; } else - res = -ENODATA; + res = -EOPNOTSUPP; out: if (size) hfs_find_exit(&fd); diff --git a/fs/hfsplus/options.c b/fs/hfsplus/options.c index 572628b4b07d..f9ab276a4d8d 100644 --- a/fs/hfsplus/options.c +++ b/fs/hfsplus/options.c @@ -143,13 +143,13 @@ int hfsplus_parse_options(char *input, struct hfsplus_sb_info *sbi) kfree(p); break; case opt_decompose: - sbi->flags &= ~HFSPLUS_SB_NODECOMPOSE; + clear_bit(HFSPLUS_SB_NODECOMPOSE, &sbi->flags); break; case opt_nodecompose: - sbi->flags |= HFSPLUS_SB_NODECOMPOSE; + set_bit(HFSPLUS_SB_NODECOMPOSE, &sbi->flags); break; case opt_force: - sbi->flags |= HFSPLUS_SB_FORCE; + set_bit(HFSPLUS_SB_FORCE, &sbi->flags); break; default: return 0; @@ -171,7 +171,7 @@ done: int hfsplus_show_options(struct seq_file *seq, struct vfsmount *mnt) { - struct hfsplus_sb_info *sbi = &HFSPLUS_SB(mnt->mnt_sb); + struct hfsplus_sb_info *sbi = HFSPLUS_SB(mnt->mnt_sb); if (sbi->creator != HFSPLUS_DEF_CR_TYPE) seq_printf(seq, ",creator=%.4s", (char *)&sbi->creator); @@ -184,7 +184,7 @@ int hfsplus_show_options(struct seq_file *seq, struct vfsmount *mnt) seq_printf(seq, ",session=%u", sbi->session); if (sbi->nls) seq_printf(seq, ",nls=%s", sbi->nls->charset); - if (sbi->flags & HFSPLUS_SB_NODECOMPOSE) + if (test_bit(HFSPLUS_SB_NODECOMPOSE, &sbi->flags)) seq_printf(seq, ",nodecompose"); return 0; } diff --git a/fs/hfsplus/part_tbl.c b/fs/hfsplus/part_tbl.c index 1528a6fd0299..208b16c645cc 100644 --- a/fs/hfsplus/part_tbl.c +++ b/fs/hfsplus/part_tbl.c @@ -74,6 +74,7 @@ struct old_pmap { int hfs_part_find(struct super_block *sb, sector_t *part_start, sector_t *part_size) { + struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb); struct buffer_head *bh; __be16 *data; int i, size, res; @@ -95,7 +96,7 @@ int hfs_part_find(struct super_block *sb, for (i = 0; i < size; p++, i++) { if (p->pdStart && p->pdSize && p->pdFSID == cpu_to_be32(0x54465331)/*"TFS1"*/ && - (HFSPLUS_SB(sb).part < 0 || HFSPLUS_SB(sb).part == i)) { + (sbi->part < 0 || sbi->part == i)) { *part_start += be32_to_cpu(p->pdStart); *part_size = be32_to_cpu(p->pdSize); res = 0; @@ -111,7 +112,7 @@ int hfs_part_find(struct super_block *sb, size = be32_to_cpu(pm->pmMapBlkCnt); for (i = 0; i < size;) { if (!memcmp(pm->pmPartType,"Apple_HFS", 9) && - (HFSPLUS_SB(sb).part < 0 || HFSPLUS_SB(sb).part == i)) { + (sbi->part < 0 || sbi->part == i)) { *part_start += be32_to_cpu(pm->pmPyPartStart); *part_size = be32_to_cpu(pm->pmPartBlkCnt); res = 0; diff --git a/fs/hfsplus/super.c b/fs/hfsplus/super.c index 3b55c050c742..9a88d7536103 100644 --- a/fs/hfsplus/super.c +++ b/fs/hfsplus/super.c @@ -12,7 +12,6 @@ #include <linux/pagemap.h> #include <linux/fs.h> #include <linux/slab.h> -#include <linux/smp_lock.h> #include <linux/vfs.h> #include <linux/nls.h> @@ -21,40 +20,11 @@ static void hfsplus_destroy_inode(struct inode *inode); #include "hfsplus_fs.h" -struct inode *hfsplus_iget(struct super_block *sb, unsigned long ino) +static int hfsplus_system_read_inode(struct inode *inode) { - struct hfs_find_data fd; - struct hfsplus_vh *vhdr; - struct inode *inode; - long err = -EIO; - - inode = iget_locked(sb, ino); - if (!inode) - return ERR_PTR(-ENOMEM); - if (!(inode->i_state & I_NEW)) - return inode; + struct hfsplus_vh *vhdr = HFSPLUS_SB(inode->i_sb)->s_vhdr; - INIT_LIST_HEAD(&HFSPLUS_I(inode).open_dir_list); - mutex_init(&HFSPLUS_I(inode).extents_lock); - HFSPLUS_I(inode).flags = 0; - HFSPLUS_I(inode).rsrc_inode = NULL; - atomic_set(&HFSPLUS_I(inode).opencnt, 0); - - if (inode->i_ino >= HFSPLUS_FIRSTUSER_CNID) { - read_inode: - hfs_find_init(HFSPLUS_SB(inode->i_sb).cat_tree, &fd); - err = hfsplus_find_cat(inode->i_sb, inode->i_ino, &fd); - if (!err) - err = hfsplus_cat_read_inode(inode, &fd); - hfs_find_exit(&fd); - if (err) - goto bad_inode; - goto done; - } - vhdr = HFSPLUS_SB(inode->i_sb).s_vhdr; - switch(inode->i_ino) { - case HFSPLUS_ROOT_CNID: - goto read_inode; + switch (inode->i_ino) { case HFSPLUS_EXT_CNID: hfsplus_inode_read_fork(inode, &vhdr->ext_file); inode->i_mapping->a_ops = &hfsplus_btree_aops; @@ -75,74 +45,101 @@ struct inode *hfsplus_iget(struct super_block *sb, unsigned long ino) inode->i_mapping->a_ops = &hfsplus_btree_aops; break; default: - goto bad_inode; + return -EIO; + } + + return 0; +} + +struct inode *hfsplus_iget(struct super_block *sb, unsigned long ino) +{ + struct hfs_find_data fd; + struct inode *inode; + int err; + + inode = iget_locked(sb, ino); + if (!inode) + return ERR_PTR(-ENOMEM); + if (!(inode->i_state & I_NEW)) + return inode; + + INIT_LIST_HEAD(&HFSPLUS_I(inode)->open_dir_list); + mutex_init(&HFSPLUS_I(inode)->extents_lock); + HFSPLUS_I(inode)->flags = 0; + HFSPLUS_I(inode)->rsrc_inode = NULL; + atomic_set(&HFSPLUS_I(inode)->opencnt, 0); + + if (inode->i_ino >= HFSPLUS_FIRSTUSER_CNID || + inode->i_ino == HFSPLUS_ROOT_CNID) { + hfs_find_init(HFSPLUS_SB(inode->i_sb)->cat_tree, &fd); + err = hfsplus_find_cat(inode->i_sb, inode->i_ino, &fd); + if (!err) + err = hfsplus_cat_read_inode(inode, &fd); + hfs_find_exit(&fd); + } else { + err = hfsplus_system_read_inode(inode); + } + + if (err) { + iget_failed(inode); + return ERR_PTR(err); } -done: unlock_new_inode(inode); return inode; - -bad_inode: - iget_failed(inode); - return ERR_PTR(err); } -static int hfsplus_write_inode(struct inode *inode, - struct writeback_control *wbc) +static int hfsplus_system_write_inode(struct inode *inode) { - struct hfsplus_vh *vhdr; - int ret = 0; + struct hfsplus_sb_info *sbi = HFSPLUS_SB(inode->i_sb); + struct hfsplus_vh *vhdr = sbi->s_vhdr; + struct hfsplus_fork_raw *fork; + struct hfs_btree *tree = NULL; - dprint(DBG_INODE, "hfsplus_write_inode: %lu\n", inode->i_ino); - hfsplus_ext_write_extent(inode); - if (inode->i_ino >= HFSPLUS_FIRSTUSER_CNID) { - return hfsplus_cat_write_inode(inode); - } - vhdr = HFSPLUS_SB(inode->i_sb).s_vhdr; switch (inode->i_ino) { - case HFSPLUS_ROOT_CNID: - ret = hfsplus_cat_write_inode(inode); - break; case HFSPLUS_EXT_CNID: - if (vhdr->ext_file.total_size != cpu_to_be64(inode->i_size)) { - HFSPLUS_SB(inode->i_sb).flags |= HFSPLUS_SB_WRITEBACKUP; - inode->i_sb->s_dirt = 1; - } - hfsplus_inode_write_fork(inode, &vhdr->ext_file); - hfs_btree_write(HFSPLUS_SB(inode->i_sb).ext_tree); + fork = &vhdr->ext_file; + tree = sbi->ext_tree; break; case HFSPLUS_CAT_CNID: - if (vhdr->cat_file.total_size != cpu_to_be64(inode->i_size)) { - HFSPLUS_SB(inode->i_sb).flags |= HFSPLUS_SB_WRITEBACKUP; - inode->i_sb->s_dirt = 1; - } - hfsplus_inode_write_fork(inode, &vhdr->cat_file); - hfs_btree_write(HFSPLUS_SB(inode->i_sb).cat_tree); + fork = &vhdr->cat_file; + tree = sbi->cat_tree; break; case HFSPLUS_ALLOC_CNID: - if (vhdr->alloc_file.total_size != cpu_to_be64(inode->i_size)) { - HFSPLUS_SB(inode->i_sb).flags |= HFSPLUS_SB_WRITEBACKUP; - inode->i_sb->s_dirt = 1; - } - hfsplus_inode_write_fork(inode, &vhdr->alloc_file); + fork = &vhdr->alloc_file; break; case HFSPLUS_START_CNID: - if (vhdr->start_file.total_size != cpu_to_be64(inode->i_size)) { - HFSPLUS_SB(inode->i_sb).flags |= HFSPLUS_SB_WRITEBACKUP; - inode->i_sb->s_dirt = 1; - } - hfsplus_inode_write_fork(inode, &vhdr->start_file); + fork = &vhdr->start_file; break; case HFSPLUS_ATTR_CNID: - if (vhdr->attr_file.total_size != cpu_to_be64(inode->i_size)) { - HFSPLUS_SB(inode->i_sb).flags |= HFSPLUS_SB_WRITEBACKUP; - inode->i_sb->s_dirt = 1; - } - hfsplus_inode_write_fork(inode, &vhdr->attr_file); - hfs_btree_write(HFSPLUS_SB(inode->i_sb).attr_tree); - break; + fork = &vhdr->attr_file; + tree = sbi->attr_tree; + default: + return -EIO; + } + + if (fork->total_size != cpu_to_be64(inode->i_size)) { + set_bit(HFSPLUS_SB_WRITEBACKUP, &sbi->flags); + inode->i_sb->s_dirt = 1; } - return ret; + hfsplus_inode_write_fork(inode, fork); + if (tree) + hfs_btree_write(tree); + return 0; +} + +static int hfsplus_write_inode(struct inode *inode, + struct writeback_control *wbc) +{ + dprint(DBG_INODE, "hfsplus_write_inode: %lu\n", inode->i_ino); + + hfsplus_ext_write_extent(inode); + + if (inode->i_ino >= HFSPLUS_FIRSTUSER_CNID || + inode->i_ino == HFSPLUS_ROOT_CNID) + return hfsplus_cat_write_inode(inode); + else + return hfsplus_system_write_inode(inode); } static void hfsplus_evict_inode(struct inode *inode) @@ -151,51 +148,53 @@ static void hfsplus_evict_inode(struct inode *inode) truncate_inode_pages(&inode->i_data, 0); end_writeback(inode); if (HFSPLUS_IS_RSRC(inode)) { - HFSPLUS_I(HFSPLUS_I(inode).rsrc_inode).rsrc_inode = NULL; - iput(HFSPLUS_I(inode).rsrc_inode); + HFSPLUS_I(HFSPLUS_I(inode)->rsrc_inode)->rsrc_inode = NULL; + iput(HFSPLUS_I(inode)->rsrc_inode); } } int hfsplus_sync_fs(struct super_block *sb, int wait) { - struct hfsplus_vh *vhdr = HFSPLUS_SB(sb).s_vhdr; + struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb); + struct hfsplus_vh *vhdr = sbi->s_vhdr; dprint(DBG_SUPER, "hfsplus_write_super\n"); - lock_super(sb); + mutex_lock(&sbi->vh_mutex); + mutex_lock(&sbi->alloc_mutex); sb->s_dirt = 0; - vhdr->free_blocks = cpu_to_be32(HFSPLUS_SB(sb).free_blocks); - vhdr->next_alloc = cpu_to_be32(HFSPLUS_SB(sb).next_alloc); - vhdr->next_cnid = cpu_to_be32(HFSPLUS_SB(sb).next_cnid); - vhdr->folder_count = cpu_to_be32(HFSPLUS_SB(sb).folder_count); - vhdr->file_count = cpu_to_be32(HFSPLUS_SB(sb).file_count); + vhdr->free_blocks = cpu_to_be32(sbi->free_blocks); + vhdr->next_cnid = cpu_to_be32(sbi->next_cnid); + vhdr->folder_count = cpu_to_be32(sbi->folder_count); + vhdr->file_count = cpu_to_be32(sbi->file_count); - mark_buffer_dirty(HFSPLUS_SB(sb).s_vhbh); - if (HFSPLUS_SB(sb).flags & HFSPLUS_SB_WRITEBACKUP) { - if (HFSPLUS_SB(sb).sect_count) { + mark_buffer_dirty(sbi->s_vhbh); + if (test_and_clear_bit(HFSPLUS_SB_WRITEBACKUP, &sbi->flags)) { + if (sbi->sect_count) { struct buffer_head *bh; u32 block, offset; - block = HFSPLUS_SB(sb).blockoffset; - block += (HFSPLUS_SB(sb).sect_count - 2) >> (sb->s_blocksize_bits - 9); - offset = ((HFSPLUS_SB(sb).sect_count - 2) << 9) & (sb->s_blocksize - 1); - printk(KERN_DEBUG "hfs: backup: %u,%u,%u,%u\n", HFSPLUS_SB(sb).blockoffset, - HFSPLUS_SB(sb).sect_count, block, offset); + block = sbi->blockoffset; + block += (sbi->sect_count - 2) >> (sb->s_blocksize_bits - 9); + offset = ((sbi->sect_count - 2) << 9) & (sb->s_blocksize - 1); + printk(KERN_DEBUG "hfs: backup: %u,%u,%u,%u\n", + sbi->blockoffset, sbi->sect_count, + block, offset); bh = sb_bread(sb, block); if (bh) { vhdr = (struct hfsplus_vh *)(bh->b_data + offset); if (be16_to_cpu(vhdr->signature) == HFSPLUS_VOLHEAD_SIG) { - memcpy(vhdr, HFSPLUS_SB(sb).s_vhdr, sizeof(*vhdr)); + memcpy(vhdr, sbi->s_vhdr, sizeof(*vhdr)); mark_buffer_dirty(bh); brelse(bh); } else printk(KERN_WARNING "hfs: backup not found!\n"); } } - HFSPLUS_SB(sb).flags &= ~HFSPLUS_SB_WRITEBACKUP; } - unlock_super(sb); + mutex_unlock(&sbi->alloc_mutex); + mutex_unlock(&sbi->vh_mutex); return 0; } @@ -209,48 +208,48 @@ static void hfsplus_write_super(struct super_block *sb) static void hfsplus_put_super(struct super_block *sb) { + struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb); + dprint(DBG_SUPER, "hfsplus_put_super\n"); + if (!sb->s_fs_info) return; - lock_kernel(); - if (sb->s_dirt) hfsplus_write_super(sb); - if (!(sb->s_flags & MS_RDONLY) && HFSPLUS_SB(sb).s_vhdr) { - struct hfsplus_vh *vhdr = HFSPLUS_SB(sb).s_vhdr; + if (!(sb->s_flags & MS_RDONLY) && sbi->s_vhdr) { + struct hfsplus_vh *vhdr = sbi->s_vhdr; vhdr->modify_date = hfsp_now2mt(); vhdr->attributes |= cpu_to_be32(HFSPLUS_VOL_UNMNT); vhdr->attributes &= cpu_to_be32(~HFSPLUS_VOL_INCNSTNT); - mark_buffer_dirty(HFSPLUS_SB(sb).s_vhbh); - sync_dirty_buffer(HFSPLUS_SB(sb).s_vhbh); + mark_buffer_dirty(sbi->s_vhbh); + sync_dirty_buffer(sbi->s_vhbh); } - hfs_btree_close(HFSPLUS_SB(sb).cat_tree); - hfs_btree_close(HFSPLUS_SB(sb).ext_tree); - iput(HFSPLUS_SB(sb).alloc_file); - iput(HFSPLUS_SB(sb).hidden_dir); - brelse(HFSPLUS_SB(sb).s_vhbh); - unload_nls(HFSPLUS_SB(sb).nls); + hfs_btree_close(sbi->cat_tree); + hfs_btree_close(sbi->ext_tree); + iput(sbi->alloc_file); + iput(sbi->hidden_dir); + brelse(sbi->s_vhbh); + unload_nls(sbi->nls); kfree(sb->s_fs_info); sb->s_fs_info = NULL; - - unlock_kernel(); } static int hfsplus_statfs(struct dentry *dentry, struct kstatfs *buf) { struct super_block *sb = dentry->d_sb; + struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb); u64 id = huge_encode_dev(sb->s_bdev->bd_dev); buf->f_type = HFSPLUS_SUPER_MAGIC; buf->f_bsize = sb->s_blocksize; - buf->f_blocks = HFSPLUS_SB(sb).total_blocks << HFSPLUS_SB(sb).fs_shift; - buf->f_bfree = HFSPLUS_SB(sb).free_blocks << HFSPLUS_SB(sb).fs_shift; + buf->f_blocks = sbi->total_blocks << sbi->fs_shift; + buf->f_bfree = sbi->free_blocks << sbi->fs_shift; buf->f_bavail = buf->f_bfree; buf->f_files = 0xFFFFFFFF; - buf->f_ffree = 0xFFFFFFFF - HFSPLUS_SB(sb).next_cnid; + buf->f_ffree = 0xFFFFFFFF - sbi->next_cnid; buf->f_fsid.val[0] = (u32)id; buf->f_fsid.val[1] = (u32)(id >> 32); buf->f_namelen = HFSPLUS_MAX_STRLEN; @@ -263,11 +262,11 @@ static int hfsplus_remount(struct super_block *sb, int *flags, char *data) if ((*flags & MS_RDONLY) == (sb->s_flags & MS_RDONLY)) return 0; if (!(*flags & MS_RDONLY)) { - struct hfsplus_vh *vhdr = HFSPLUS_SB(sb).s_vhdr; + struct hfsplus_vh *vhdr = HFSPLUS_SB(sb)->s_vhdr; struct hfsplus_sb_info sbi; memset(&sbi, 0, sizeof(struct hfsplus_sb_info)); - sbi.nls = HFSPLUS_SB(sb).nls; + sbi.nls = HFSPLUS_SB(sb)->nls; if (!hfsplus_parse_options(data, &sbi)) return -EINVAL; @@ -276,7 +275,7 @@ static int hfsplus_remount(struct super_block *sb, int *flags, char *data) "running fsck.hfsplus is recommended. leaving read-only.\n"); sb->s_flags |= MS_RDONLY; *flags |= MS_RDONLY; - } else if (sbi.flags & HFSPLUS_SB_FORCE) { + } else if (test_bit(HFSPLUS_SB_FORCE, &sbi.flags)) { /* nothing */ } else if (vhdr->attributes & cpu_to_be32(HFSPLUS_VOL_SOFTLOCK)) { printk(KERN_WARNING "hfs: filesystem is marked locked, leaving read-only.\n"); @@ -320,7 +319,8 @@ static int hfsplus_fill_super(struct super_block *sb, void *data, int silent) return -ENOMEM; sb->s_fs_info = sbi; - INIT_HLIST_HEAD(&sbi->rsrc_inodes); + mutex_init(&sbi->alloc_mutex); + mutex_init(&sbi->vh_mutex); hfsplus_fill_defaults(sbi); if (!hfsplus_parse_options(data, sbi)) { printk(KERN_ERR "hfs: unable to parse mount options\n"); @@ -344,7 +344,7 @@ static int hfsplus_fill_super(struct super_block *sb, void *data, int silent) err = -EINVAL; goto cleanup; } - vhdr = HFSPLUS_SB(sb).s_vhdr; + vhdr = sbi->s_vhdr; /* Copy parts of the volume header into the superblock */ sb->s_magic = HFSPLUS_VOLHEAD_SIG; @@ -353,18 +353,19 @@ static int hfsplus_fill_super(struct super_block *sb, void *data, int silent) printk(KERN_ERR "hfs: wrong filesystem version\n"); goto cleanup; } - HFSPLUS_SB(sb).total_blocks = be32_to_cpu(vhdr->total_blocks); - HFSPLUS_SB(sb).free_blocks = be32_to_cpu(vhdr->free_blocks); - HFSPLUS_SB(sb).next_alloc = be32_to_cpu(vhdr->next_alloc); - HFSPLUS_SB(sb).next_cnid = be32_to_cpu(vhdr->next_cnid); - HFSPLUS_SB(sb).file_count = be32_to_cpu(vhdr->file_count); - HFSPLUS_SB(sb).folder_count = be32_to_cpu(vhdr->folder_count); - HFSPLUS_SB(sb).data_clump_blocks = be32_to_cpu(vhdr->data_clump_sz) >> HFSPLUS_SB(sb).alloc_blksz_shift; - if (!HFSPLUS_SB(sb).data_clump_blocks) - HFSPLUS_SB(sb).data_clump_blocks = 1; - HFSPLUS_SB(sb).rsrc_clump_blocks = be32_to_cpu(vhdr->rsrc_clump_sz) >> HFSPLUS_SB(sb).alloc_blksz_shift; - if (!HFSPLUS_SB(sb).rsrc_clump_blocks) - HFSPLUS_SB(sb).rsrc_clump_blocks = 1; + sbi->total_blocks = be32_to_cpu(vhdr->total_blocks); + sbi->free_blocks = be32_to_cpu(vhdr->free_blocks); + sbi->next_cnid = be32_to_cpu(vhdr->next_cnid); + sbi->file_count = be32_to_cpu(vhdr->file_count); + sbi->folder_count = be32_to_cpu(vhdr->folder_count); + sbi->data_clump_blocks = + be32_to_cpu(vhdr->data_clump_sz) >> sbi->alloc_blksz_shift; + if (!sbi->data_clump_blocks) + sbi->data_clump_blocks = 1; + sbi->rsrc_clump_blocks = + be32_to_cpu(vhdr->rsrc_clump_sz) >> sbi->alloc_blksz_shift; + if (!sbi->rsrc_clump_blocks) + sbi->rsrc_clump_blocks = 1; /* Set up operations so we can load metadata */ sb->s_op = &hfsplus_sops; @@ -374,7 +375,7 @@ static int hfsplus_fill_super(struct super_block *sb, void *data, int silent) printk(KERN_WARNING "hfs: Filesystem was not cleanly unmounted, " "running fsck.hfsplus is recommended. mounting read-only.\n"); sb->s_flags |= MS_RDONLY; - } else if (sbi->flags & HFSPLUS_SB_FORCE) { + } else if (test_and_clear_bit(HFSPLUS_SB_FORCE, &sbi->flags)) { /* nothing */ } else if (vhdr->attributes & cpu_to_be32(HFSPLUS_VOL_SOFTLOCK)) { printk(KERN_WARNING "hfs: Filesystem is marked locked, mounting read-only.\n"); @@ -384,16 +385,15 @@ static int hfsplus_fill_super(struct super_block *sb, void *data, int silent) "use the force option at your own risk, mounting read-only.\n"); sb->s_flags |= MS_RDONLY; } - sbi->flags &= ~HFSPLUS_SB_FORCE; /* Load metadata objects (B*Trees) */ - HFSPLUS_SB(sb).ext_tree = hfs_btree_open(sb, HFSPLUS_EXT_CNID); - if (!HFSPLUS_SB(sb).ext_tree) { + sbi->ext_tree = hfs_btree_open(sb, HFSPLUS_EXT_CNID); + if (!sbi->ext_tree) { printk(KERN_ERR "hfs: failed to load extents file\n"); goto cleanup; } - HFSPLUS_SB(sb).cat_tree = hfs_btree_open(sb, HFSPLUS_CAT_CNID); - if (!HFSPLUS_SB(sb).cat_tree) { + sbi->cat_tree = hfs_btree_open(sb, HFSPLUS_CAT_CNID); + if (!sbi->cat_tree) { printk(KERN_ERR "hfs: failed to load catalog file\n"); goto cleanup; } @@ -404,7 +404,7 @@ static int hfsplus_fill_super(struct super_block *sb, void *data, int silent) err = PTR_ERR(inode); goto cleanup; } - HFSPLUS_SB(sb).alloc_file = inode; + sbi->alloc_file = inode; /* Load the root directory */ root = hfsplus_iget(sb, HFSPLUS_ROOT_CNID); @@ -423,7 +423,7 @@ static int hfsplus_fill_super(struct super_block *sb, void *data, int silent) str.len = sizeof(HFSP_HIDDENDIR_NAME) - 1; str.name = HFSP_HIDDENDIR_NAME; - hfs_find_init(HFSPLUS_SB(sb).cat_tree, &fd); + hfs_find_init(sbi->cat_tree, &fd); hfsplus_cat_build_key(sb, fd.search_key, HFSPLUS_ROOT_CNID, &str); if (!hfs_brec_read(&fd, &entry, sizeof(entry))) { hfs_find_exit(&fd); @@ -434,7 +434,7 @@ static int hfsplus_fill_super(struct super_block *sb, void *data, int silent) err = PTR_ERR(inode); goto cleanup; } - HFSPLUS_SB(sb).hidden_dir = inode; + sbi->hidden_dir = inode; } else hfs_find_exit(&fd); @@ -449,15 +449,19 @@ static int hfsplus_fill_super(struct super_block *sb, void *data, int silent) be32_add_cpu(&vhdr->write_count, 1); vhdr->attributes &= cpu_to_be32(~HFSPLUS_VOL_UNMNT); vhdr->attributes |= cpu_to_be32(HFSPLUS_VOL_INCNSTNT); - mark_buffer_dirty(HFSPLUS_SB(sb).s_vhbh); - sync_dirty_buffer(HFSPLUS_SB(sb).s_vhbh); + mark_buffer_dirty(sbi->s_vhbh); + sync_dirty_buffer(sbi->s_vhbh); - if (!HFSPLUS_SB(sb).hidden_dir) { + if (!sbi->hidden_dir) { printk(KERN_DEBUG "hfs: create hidden dir...\n"); - HFSPLUS_SB(sb).hidden_dir = hfsplus_new_inode(sb, S_IFDIR); - hfsplus_create_cat(HFSPLUS_SB(sb).hidden_dir->i_ino, sb->s_root->d_inode, - &str, HFSPLUS_SB(sb).hidden_dir); - mark_inode_dirty(HFSPLUS_SB(sb).hidden_dir); + + mutex_lock(&sbi->vh_mutex); + sbi->hidden_dir = hfsplus_new_inode(sb, S_IFDIR); + hfsplus_create_cat(sbi->hidden_dir->i_ino, sb->s_root->d_inode, + &str, sbi->hidden_dir); + mutex_unlock(&sbi->vh_mutex); + + mark_inode_dirty(sbi->hidden_dir); } out: unload_nls(sbi->nls); @@ -486,7 +490,7 @@ static struct inode *hfsplus_alloc_inode(struct super_block *sb) static void hfsplus_destroy_inode(struct inode *inode) { - kmem_cache_free(hfsplus_inode_cachep, &HFSPLUS_I(inode)); + kmem_cache_free(hfsplus_inode_cachep, HFSPLUS_I(inode)); } #define HFSPLUS_INODE_SIZE sizeof(struct hfsplus_inode_info) diff --git a/fs/hfsplus/unicode.c b/fs/hfsplus/unicode.c index 628ccf6fa402..b66d67de882c 100644 --- a/fs/hfsplus/unicode.c +++ b/fs/hfsplus/unicode.c @@ -121,7 +121,7 @@ static u16 *hfsplus_compose_lookup(u16 *p, u16 cc) int hfsplus_uni2asc(struct super_block *sb, const struct hfsplus_unistr *ustr, char *astr, int *len_p) { const hfsplus_unichr *ip; - struct nls_table *nls = HFSPLUS_SB(sb).nls; + struct nls_table *nls = HFSPLUS_SB(sb)->nls; u8 *op; u16 cc, c0, c1; u16 *ce1, *ce2; @@ -132,7 +132,7 @@ int hfsplus_uni2asc(struct super_block *sb, const struct hfsplus_unistr *ustr, c ustrlen = be16_to_cpu(ustr->length); len = *len_p; ce1 = NULL; - compose = !(HFSPLUS_SB(sb).flags & HFSPLUS_SB_NODECOMPOSE); + compose = !test_bit(HFSPLUS_SB_NODECOMPOSE, &HFSPLUS_SB(sb)->flags); while (ustrlen > 0) { c0 = be16_to_cpu(*ip++); @@ -246,7 +246,7 @@ out: static inline int asc2unichar(struct super_block *sb, const char *astr, int len, wchar_t *uc) { - int size = HFSPLUS_SB(sb).nls->char2uni(astr, len, uc); + int size = HFSPLUS_SB(sb)->nls->char2uni(astr, len, uc); if (size <= 0) { *uc = '?'; size = 1; @@ -293,7 +293,7 @@ int hfsplus_asc2uni(struct super_block *sb, struct hfsplus_unistr *ustr, u16 *dstr, outlen = 0; wchar_t c; - decompose = !(HFSPLUS_SB(sb).flags & HFSPLUS_SB_NODECOMPOSE); + decompose = !test_bit(HFSPLUS_SB_NODECOMPOSE, &HFSPLUS_SB(sb)->flags); while (outlen < HFSPLUS_MAX_STRLEN && len > 0) { size = asc2unichar(sb, astr, len, &c); @@ -330,8 +330,8 @@ int hfsplus_hash_dentry(struct dentry *dentry, struct qstr *str) wchar_t c; u16 c2; - casefold = (HFSPLUS_SB(sb).flags & HFSPLUS_SB_CASEFOLD); - decompose = !(HFSPLUS_SB(sb).flags & HFSPLUS_SB_NODECOMPOSE); + casefold = test_bit(HFSPLUS_SB_CASEFOLD, &HFSPLUS_SB(sb)->flags); + decompose = !test_bit(HFSPLUS_SB_NODECOMPOSE, &HFSPLUS_SB(sb)->flags); hash = init_name_hash(); astr = str->name; len = str->len; @@ -373,8 +373,8 @@ int hfsplus_compare_dentry(struct dentry *dentry, struct qstr *s1, struct qstr * u16 c1, c2; wchar_t c; - casefold = (HFSPLUS_SB(sb).flags & HFSPLUS_SB_CASEFOLD); - decompose = !(HFSPLUS_SB(sb).flags & HFSPLUS_SB_NODECOMPOSE); + casefold = test_bit(HFSPLUS_SB_CASEFOLD, &HFSPLUS_SB(sb)->flags); + decompose = !test_bit(HFSPLUS_SB_NODECOMPOSE, &HFSPLUS_SB(sb)->flags); astr1 = s1->name; len1 = s1->len; astr2 = s2->name; diff --git a/fs/hfsplus/wrapper.c b/fs/hfsplus/wrapper.c index bed78ac8f6d1..8972c20b3216 100644 --- a/fs/hfsplus/wrapper.c +++ b/fs/hfsplus/wrapper.c @@ -65,8 +65,8 @@ static int hfsplus_get_last_session(struct super_block *sb, *start = 0; *size = sb->s_bdev->bd_inode->i_size >> 9; - if (HFSPLUS_SB(sb).session >= 0) { - te.cdte_track = HFSPLUS_SB(sb).session; + if (HFSPLUS_SB(sb)->session >= 0) { + te.cdte_track = HFSPLUS_SB(sb)->session; te.cdte_format = CDROM_LBA; res = ioctl_by_bdev(sb->s_bdev, CDROMREADTOCENTRY, (unsigned long)&te); if (!res && (te.cdte_ctrl & CDROM_DATA_TRACK) == 4) { @@ -87,6 +87,7 @@ static int hfsplus_get_last_session(struct super_block *sb, /* Takes in super block, returns true if good data read */ int hfsplus_read_wrapper(struct super_block *sb) { + struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb); struct buffer_head *bh; struct hfsplus_vh *vhdr; struct hfsplus_wd wd; @@ -122,7 +123,7 @@ int hfsplus_read_wrapper(struct super_block *sb) if (vhdr->signature == cpu_to_be16(HFSPLUS_VOLHEAD_SIG)) break; if (vhdr->signature == cpu_to_be16(HFSPLUS_VOLHEAD_SIGX)) { - HFSPLUS_SB(sb).flags |= HFSPLUS_SB_HFSX; + set_bit(HFSPLUS_SB_HFSX, &sbi->flags); break; } brelse(bh); @@ -143,11 +144,11 @@ int hfsplus_read_wrapper(struct super_block *sb) if (blocksize < HFSPLUS_SECTOR_SIZE || ((blocksize - 1) & blocksize)) return -EINVAL; - HFSPLUS_SB(sb).alloc_blksz = blocksize; - HFSPLUS_SB(sb).alloc_blksz_shift = 0; + sbi->alloc_blksz = blocksize; + sbi->alloc_blksz_shift = 0; while ((blocksize >>= 1) != 0) - HFSPLUS_SB(sb).alloc_blksz_shift++; - blocksize = min(HFSPLUS_SB(sb).alloc_blksz, (u32)PAGE_SIZE); + sbi->alloc_blksz_shift++; + blocksize = min(sbi->alloc_blksz, (u32)PAGE_SIZE); /* align block size to block offset */ while (part_start & ((blocksize >> HFSPLUS_SECTOR_SHIFT) - 1)) @@ -158,23 +159,26 @@ int hfsplus_read_wrapper(struct super_block *sb) return -EINVAL; } - HFSPLUS_SB(sb).blockoffset = part_start >> - (sb->s_blocksize_bits - HFSPLUS_SECTOR_SHIFT); - HFSPLUS_SB(sb).sect_count = part_size; - HFSPLUS_SB(sb).fs_shift = HFSPLUS_SB(sb).alloc_blksz_shift - - sb->s_blocksize_bits; + sbi->blockoffset = + part_start >> (sb->s_blocksize_bits - HFSPLUS_SECTOR_SHIFT); + sbi->sect_count = part_size; + sbi->fs_shift = sbi->alloc_blksz_shift - sb->s_blocksize_bits; bh = sb_bread512(sb, part_start + HFSPLUS_VOLHEAD_SECTOR, vhdr); if (!bh) return -EIO; /* should still be the same... */ - if (vhdr->signature != (HFSPLUS_SB(sb).flags & HFSPLUS_SB_HFSX ? - cpu_to_be16(HFSPLUS_VOLHEAD_SIGX) : - cpu_to_be16(HFSPLUS_VOLHEAD_SIG))) - goto error; - HFSPLUS_SB(sb).s_vhbh = bh; - HFSPLUS_SB(sb).s_vhdr = vhdr; + if (test_bit(HFSPLUS_SB_HFSX, &sbi->flags)) { + if (vhdr->signature != cpu_to_be16(HFSPLUS_VOLHEAD_SIGX)) + goto error; + } else { + if (vhdr->signature != cpu_to_be16(HFSPLUS_VOLHEAD_SIG)) + goto error; + } + + sbi->s_vhbh = bh; + sbi->s_vhdr = vhdr; return 0; error: diff --git a/fs/sysfs/group.c b/fs/sysfs/group.c index 23c1e598792a..442f34ff1af8 100644 --- a/fs/sysfs/group.c +++ b/fs/sysfs/group.c @@ -148,6 +148,65 @@ void sysfs_remove_group(struct kobject * kobj, sysfs_put(sd); } +/** + * sysfs_merge_group - merge files into a pre-existing attribute group. + * @kobj: The kobject containing the group. + * @grp: The files to create and the attribute group they belong to. + * + * This function returns an error if the group doesn't exist or any of the + * files already exist in that group, in which case none of the new files + * are created. + */ +int sysfs_merge_group(struct kobject *kobj, + const struct attribute_group *grp) +{ + struct sysfs_dirent *dir_sd; + int error = 0; + struct attribute *const *attr; + int i; + + if (grp) + dir_sd = sysfs_get_dirent(kobj->sd, NULL, grp->name); + else + dir_sd = sysfs_get(kobj->sd); + if (!dir_sd) + return -ENOENT; + + for ((i = 0, attr = grp->attrs); *attr && !error; (++i, ++attr)) + error = sysfs_add_file(dir_sd, *attr, SYSFS_KOBJ_ATTR); + if (error) { + while (--i >= 0) + sysfs_hash_and_remove(dir_sd, NULL, (*--attr)->name); + } + sysfs_put(dir_sd); + + return error; +} +EXPORT_SYMBOL_GPL(sysfs_merge_group); + +/** + * sysfs_unmerge_group - remove files from a pre-existing attribute group. + * @kobj: The kobject containing the group. + * @grp: The files to remove and the attribute group they belong to. + */ +void sysfs_unmerge_group(struct kobject *kobj, + const struct attribute_group *grp) +{ + struct sysfs_dirent *dir_sd; + struct attribute *const *attr; + + if (grp) + dir_sd = sysfs_get_dirent(kobj->sd, NULL, grp->name); + else + dir_sd = sysfs_get(kobj->sd); + if (dir_sd) { + for (attr = grp->attrs; *attr; ++attr) + sysfs_hash_and_remove(dir_sd, NULL, (*attr)->name); + sysfs_put(dir_sd); + } +} +EXPORT_SYMBOL_GPL(sysfs_unmerge_group); + EXPORT_SYMBOL_GPL(sysfs_create_group); EXPORT_SYMBOL_GPL(sysfs_update_group); diff --git a/include/asm-generic/atomic.h b/include/asm-generic/atomic.h index e53347fbf1da..fd57b8477fab 100644 --- a/include/asm-generic/atomic.h +++ b/include/asm-generic/atomic.h @@ -43,6 +43,7 @@ */ #define atomic_set(v, i) (((v)->counter) = (i)) +#include <linux/irqflags.h> #include <asm/system.h> /** @@ -57,7 +58,7 @@ static inline int atomic_add_return(int i, atomic_t *v) unsigned long flags; int temp; - raw_local_irq_save(flags); /* Don't trace it in a irqsoff handler */ + raw_local_irq_save(flags); /* Don't trace it in an irqsoff handler */ temp = v->counter; temp += i; v->counter = temp; @@ -78,7 +79,7 @@ static inline int atomic_sub_return(int i, atomic_t *v) unsigned long flags; int temp; - raw_local_irq_save(flags); /* Don't trace it in a irqsoff handler */ + raw_local_irq_save(flags); /* Don't trace it in an irqsoff handler */ temp = v->counter; temp -= i; v->counter = temp; diff --git a/include/asm-generic/cmpxchg-local.h b/include/asm-generic/cmpxchg-local.h index b2ba2fc8829a..2533fddd34a6 100644 --- a/include/asm-generic/cmpxchg-local.h +++ b/include/asm-generic/cmpxchg-local.h @@ -2,6 +2,7 @@ #define __ASM_GENERIC_CMPXCHG_LOCAL_H #include <linux/types.h> +#include <linux/irqflags.h> extern unsigned long wrong_size_cmpxchg(volatile void *ptr); diff --git a/include/asm-generic/hardirq.h b/include/asm-generic/hardirq.h index 62f59080e5cc..04d0a977cd43 100644 --- a/include/asm-generic/hardirq.h +++ b/include/asm-generic/hardirq.h @@ -3,13 +3,13 @@ #include <linux/cache.h> #include <linux/threads.h> -#include <linux/irq.h> typedef struct { unsigned int __softirq_pending; } ____cacheline_aligned irq_cpustat_t; #include <linux/irq_cpustat.h> /* Standard mappings for irq_cpustat_t above */ +#include <linux/irq.h> #ifndef ack_bad_irq static inline void ack_bad_irq(unsigned int irq) diff --git a/include/asm-generic/irqflags.h b/include/asm-generic/irqflags.h index 9aebf618275a..1f40d0024cf3 100644 --- a/include/asm-generic/irqflags.h +++ b/include/asm-generic/irqflags.h @@ -5,68 +5,62 @@ * All architectures should implement at least the first two functions, * usually inline assembly will be the best way. */ -#ifndef RAW_IRQ_DISABLED -#define RAW_IRQ_DISABLED 0 -#define RAW_IRQ_ENABLED 1 +#ifndef ARCH_IRQ_DISABLED +#define ARCH_IRQ_DISABLED 0 +#define ARCH_IRQ_ENABLED 1 #endif /* read interrupt enabled status */ -#ifndef __raw_local_save_flags -unsigned long __raw_local_save_flags(void); +#ifndef arch_local_save_flags +unsigned long arch_local_save_flags(void); #endif /* set interrupt enabled status */ -#ifndef raw_local_irq_restore -void raw_local_irq_restore(unsigned long flags); +#ifndef arch_local_irq_restore +void arch_local_irq_restore(unsigned long flags); #endif /* get status and disable interrupts */ -#ifndef __raw_local_irq_save -static inline unsigned long __raw_local_irq_save(void) +#ifndef arch_local_irq_save +static inline unsigned long arch_local_irq_save(void) { unsigned long flags; - flags = __raw_local_save_flags(); - raw_local_irq_restore(RAW_IRQ_DISABLED); + flags = arch_local_save_flags(); + arch_local_irq_restore(ARCH_IRQ_DISABLED); return flags; } #endif /* test flags */ -#ifndef raw_irqs_disabled_flags -static inline int raw_irqs_disabled_flags(unsigned long flags) +#ifndef arch_irqs_disabled_flags +static inline int arch_irqs_disabled_flags(unsigned long flags) { - return flags == RAW_IRQ_DISABLED; + return flags == ARCH_IRQ_DISABLED; } #endif /* unconditionally enable interrupts */ -#ifndef raw_local_irq_enable -static inline void raw_local_irq_enable(void) +#ifndef arch_local_irq_enable +static inline void arch_local_irq_enable(void) { - raw_local_irq_restore(RAW_IRQ_ENABLED); + arch_local_irq_restore(ARCH_IRQ_ENABLED); } #endif /* unconditionally disable interrupts */ -#ifndef raw_local_irq_disable -static inline void raw_local_irq_disable(void) +#ifndef arch_local_irq_disable +static inline void arch_local_irq_disable(void) { - raw_local_irq_restore(RAW_IRQ_DISABLED); + arch_local_irq_restore(ARCH_IRQ_DISABLED); } #endif /* test hardware interrupt enable bit */ -#ifndef raw_irqs_disabled -static inline int raw_irqs_disabled(void) +#ifndef arch_irqs_disabled +static inline int arch_irqs_disabled(void) { - return raw_irqs_disabled_flags(__raw_local_save_flags()); + return arch_irqs_disabled_flags(arch_local_save_flags()); } #endif -#define raw_local_save_flags(flags) \ - do { (flags) = __raw_local_save_flags(); } while (0) - -#define raw_local_irq_save(flags) \ - do { (flags) = __raw_local_irq_save(); } while (0) - #endif /* __ASM_GENERIC_IRQFLAGS_H */ diff --git a/include/asm-generic/pgtable.h b/include/asm-generic/pgtable.h index e2bd73e8f9c0..f4d4120e5128 100644 --- a/include/asm-generic/pgtable.h +++ b/include/asm-generic/pgtable.h @@ -129,6 +129,10 @@ static inline void ptep_set_wrprotect(struct mm_struct *mm, unsigned long addres #define move_pte(pte, prot, old_addr, new_addr) (pte) #endif +#ifndef flush_tlb_fix_spurious_fault +#define flush_tlb_fix_spurious_fault(vma, address) flush_tlb_page(vma, address) +#endif + #ifndef pgprot_noncached #define pgprot_noncached(prot) (prot) #endif diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h index 8a92a170fb7d..f4229fb315e1 100644 --- a/include/asm-generic/vmlinux.lds.h +++ b/include/asm-generic/vmlinux.lds.h @@ -220,6 +220,8 @@ \ BUG_TABLE \ \ + JUMP_TABLE \ + \ /* PCI quirks */ \ .pci_fixup : AT(ADDR(.pci_fixup) - LOAD_OFFSET) { \ VMLINUX_SYMBOL(__start_pci_fixups_early) = .; \ @@ -563,6 +565,14 @@ #define BUG_TABLE #endif +#define JUMP_TABLE \ + . = ALIGN(8); \ + __jump_table : AT(ADDR(__jump_table) - LOAD_OFFSET) { \ + VMLINUX_SYMBOL(__start___jump_table) = .; \ + *(__jump_table) \ + VMLINUX_SYMBOL(__stop___jump_table) = .; \ + } + #ifdef CONFIG_PM_TRACE #define TRACEDATA \ . = ALIGN(4); \ @@ -677,7 +687,9 @@ - LOAD_OFFSET) { \ VMLINUX_SYMBOL(__per_cpu_start) = .; \ *(.data..percpu..first) \ + . = ALIGN(PAGE_SIZE); \ *(.data..percpu..page_aligned) \ + *(.data..percpu..readmostly) \ *(.data..percpu) \ *(.data..percpu..shared_aligned) \ VMLINUX_SYMBOL(__per_cpu_end) = .; \ @@ -703,7 +715,9 @@ VMLINUX_SYMBOL(__per_cpu_load) = .; \ VMLINUX_SYMBOL(__per_cpu_start) = .; \ *(.data..percpu..first) \ + . = ALIGN(PAGE_SIZE); \ *(.data..percpu..page_aligned) \ + *(.data..percpu..readmostly) \ *(.data..percpu) \ *(.data..percpu..shared_aligned) \ VMLINUX_SYMBOL(__per_cpu_end) = .; \ diff --git a/include/linux/acpi_pmtmr.h b/include/linux/acpi_pmtmr.h index 7e3d2859be50..1d0ef1ae8036 100644 --- a/include/linux/acpi_pmtmr.h +++ b/include/linux/acpi_pmtmr.h @@ -25,8 +25,6 @@ static inline u32 acpi_pm_read_early(void) return acpi_pm_read_verified() & ACPI_PM_MASK; } -extern void pmtimer_wait(unsigned); - #else static inline u32 acpi_pm_read_early(void) diff --git a/include/linux/amba/pl022.h b/include/linux/amba/pl022.h index abf26cc47a2b..4ce98f54186b 100644 --- a/include/linux/amba/pl022.h +++ b/include/linux/amba/pl022.h @@ -228,6 +228,7 @@ enum ssp_chip_select { }; +struct dma_chan; /** * struct pl022_ssp_master - device.platform_data for SPI controller devices. * @num_chipselect: chipselects are used to distinguish individual @@ -235,11 +236,16 @@ enum ssp_chip_select { * each slave has a chipselect signal, but it's common that not * every chipselect is connected to a slave. * @enable_dma: if true enables DMA driven transfers. + * @dma_rx_param: parameter to locate an RX DMA channel. + * @dma_tx_param: parameter to locate a TX DMA channel. */ struct pl022_ssp_controller { u16 bus_id; u8 num_chipselect; u8 enable_dma:1; + bool (*dma_filter)(struct dma_chan *chan, void *filter_param); + void *dma_rx_param; + void *dma_tx_param; }; /** @@ -270,20 +276,13 @@ struct pl022_ssp_controller { * @dma_config: DMA configuration for SSP controller and peripheral */ struct pl022_config_chip { - struct device *dev; - enum ssp_loopback lbm; enum ssp_interface iface; enum ssp_hierarchy hierarchy; bool slave_tx_disable; struct ssp_clock_params clk_freq; - enum ssp_rx_endian endian_rx; - enum ssp_tx_endian endian_tx; - enum ssp_data_size data_size; enum ssp_mode com_mode; enum ssp_rx_level_trig rx_lev_trig; enum ssp_tx_level_trig tx_lev_trig; - enum ssp_spi_clk_phase clk_phase; - enum ssp_spi_clk_pol clk_pol; enum ssp_microwire_ctrl_len ctrl_len; enum ssp_microwire_wait_state wait_state; enum ssp_duplex duplex; diff --git a/fs/ceph/auth.h b/include/linux/ceph/auth.h index d38a2fb4a137..7fff521d7eb5 100644 --- a/fs/ceph/auth.h +++ b/include/linux/ceph/auth.h @@ -1,8 +1,8 @@ #ifndef _FS_CEPH_AUTH_H #define _FS_CEPH_AUTH_H -#include "types.h" -#include "buffer.h" +#include <linux/ceph/types.h> +#include <linux/ceph/buffer.h> /* * Abstract interface for communicating with the authenticate module. diff --git a/fs/ceph/buffer.h b/include/linux/ceph/buffer.h index 58d19014068f..58d19014068f 100644 --- a/fs/ceph/buffer.h +++ b/include/linux/ceph/buffer.h diff --git a/fs/ceph/ceph_debug.h b/include/linux/ceph/ceph_debug.h index 1818c2305610..aa2e19182d99 100644 --- a/fs/ceph/ceph_debug.h +++ b/include/linux/ceph/ceph_debug.h @@ -3,7 +3,7 @@ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt -#ifdef CONFIG_CEPH_FS_PRETTYDEBUG +#ifdef CONFIG_CEPH_LIB_PRETTYDEBUG /* * wrap pr_debug to include a filename:lineno prefix on each line. @@ -14,7 +14,8 @@ # if defined(DEBUG) || defined(CONFIG_DYNAMIC_DEBUG) extern const char *ceph_file_part(const char *s, int len); # define dout(fmt, ...) \ - pr_debug(" %12.12s:%-4d : " fmt, \ + pr_debug("%.*s %12.12s:%-4d : " fmt, \ + 8 - (int)sizeof(KBUILD_MODNAME), " ", \ ceph_file_part(__FILE__, sizeof(__FILE__)), \ __LINE__, ##__VA_ARGS__) # else diff --git a/fs/ceph/ceph_frag.h b/include/linux/ceph/ceph_frag.h index 5babb8e95352..5babb8e95352 100644 --- a/fs/ceph/ceph_frag.h +++ b/include/linux/ceph/ceph_frag.h diff --git a/fs/ceph/ceph_fs.h b/include/linux/ceph/ceph_fs.h index d5619ac86711..c3c74aef289d 100644 --- a/fs/ceph/ceph_fs.h +++ b/include/linux/ceph/ceph_fs.h @@ -299,6 +299,7 @@ enum { CEPH_MDS_OP_SETATTR = 0x01108, CEPH_MDS_OP_SETFILELOCK= 0x01109, CEPH_MDS_OP_GETFILELOCK= 0x00110, + CEPH_MDS_OP_SETDIRLAYOUT=0x0110a, CEPH_MDS_OP_MKNOD = 0x01201, CEPH_MDS_OP_LINK = 0x01202, diff --git a/fs/ceph/ceph_hash.h b/include/linux/ceph/ceph_hash.h index d099c3f90236..d099c3f90236 100644 --- a/fs/ceph/ceph_hash.h +++ b/include/linux/ceph/ceph_hash.h diff --git a/include/linux/ceph/debugfs.h b/include/linux/ceph/debugfs.h new file mode 100644 index 000000000000..2a79702e092b --- /dev/null +++ b/include/linux/ceph/debugfs.h @@ -0,0 +1,33 @@ +#ifndef _FS_CEPH_DEBUGFS_H +#define _FS_CEPH_DEBUGFS_H + +#include "ceph_debug.h" +#include "types.h" + +#define CEPH_DEFINE_SHOW_FUNC(name) \ +static int name##_open(struct inode *inode, struct file *file) \ +{ \ + struct seq_file *sf; \ + int ret; \ + \ + ret = single_open(file, name, NULL); \ + sf = file->private_data; \ + sf->private = inode->i_private; \ + return ret; \ +} \ + \ +static const struct file_operations name##_fops = { \ + .open = name##_open, \ + .read = seq_read, \ + .llseek = seq_lseek, \ + .release = single_release, \ +}; + +/* debugfs.c */ +extern int ceph_debugfs_init(void); +extern void ceph_debugfs_cleanup(void); +extern int ceph_debugfs_client_init(struct ceph_client *client); +extern void ceph_debugfs_client_cleanup(struct ceph_client *client); + +#endif + diff --git a/fs/ceph/decode.h b/include/linux/ceph/decode.h index 3d25415afe63..c5b6939fb32a 100644 --- a/fs/ceph/decode.h +++ b/include/linux/ceph/decode.h @@ -191,6 +191,11 @@ static inline void ceph_encode_string(void **p, void *end, ceph_encode_need(p, end, n, bad); \ ceph_encode_copy(p, pv, n); \ } while (0) +#define ceph_encode_string_safe(p, end, s, n, bad) \ + do { \ + ceph_encode_need(p, end, n, bad); \ + ceph_encode_string(p, end, s, n); \ + } while (0) #endif diff --git a/include/linux/ceph/libceph.h b/include/linux/ceph/libceph.h new file mode 100644 index 000000000000..f22b2e941686 --- /dev/null +++ b/include/linux/ceph/libceph.h @@ -0,0 +1,249 @@ +#ifndef _FS_CEPH_LIBCEPH_H +#define _FS_CEPH_LIBCEPH_H + +#include "ceph_debug.h" + +#include <asm/unaligned.h> +#include <linux/backing-dev.h> +#include <linux/completion.h> +#include <linux/exportfs.h> +#include <linux/fs.h> +#include <linux/mempool.h> +#include <linux/pagemap.h> +#include <linux/wait.h> +#include <linux/writeback.h> +#include <linux/slab.h> + +#include "types.h" +#include "messenger.h" +#include "msgpool.h" +#include "mon_client.h" +#include "osd_client.h" +#include "ceph_fs.h" + +/* + * Supported features + */ +#define CEPH_FEATURE_SUPPORTED_DEFAULT CEPH_FEATURE_NOSRCADDR +#define CEPH_FEATURE_REQUIRED_DEFAULT CEPH_FEATURE_NOSRCADDR + +/* + * mount options + */ +#define CEPH_OPT_FSID (1<<0) +#define CEPH_OPT_NOSHARE (1<<1) /* don't share client with other sbs */ +#define CEPH_OPT_MYIP (1<<2) /* specified my ip */ +#define CEPH_OPT_NOCRC (1<<3) /* no data crc on writes */ + +#define CEPH_OPT_DEFAULT (0); + +#define ceph_set_opt(client, opt) \ + (client)->options->flags |= CEPH_OPT_##opt; +#define ceph_test_opt(client, opt) \ + (!!((client)->options->flags & CEPH_OPT_##opt)) + +struct ceph_options { + int flags; + struct ceph_fsid fsid; + struct ceph_entity_addr my_addr; + int mount_timeout; + int osd_idle_ttl; + int osd_timeout; + int osd_keepalive_timeout; + + /* + * any type that can't be simply compared or doesn't need need + * to be compared should go beyond this point, + * ceph_compare_options() should be updated accordingly + */ + + struct ceph_entity_addr *mon_addr; /* should be the first + pointer type of args */ + int num_mon; + char *name; + char *secret; +}; + +/* + * defaults + */ +#define CEPH_MOUNT_TIMEOUT_DEFAULT 60 +#define CEPH_OSD_TIMEOUT_DEFAULT 60 /* seconds */ +#define CEPH_OSD_KEEPALIVE_DEFAULT 5 +#define CEPH_OSD_IDLE_TTL_DEFAULT 60 +#define CEPH_MOUNT_RSIZE_DEFAULT (512*1024) /* readahead */ + +#define CEPH_MSG_MAX_FRONT_LEN (16*1024*1024) +#define CEPH_MSG_MAX_DATA_LEN (16*1024*1024) + +#define CEPH_AUTH_NAME_DEFAULT "guest" + +/* + * Delay telling the MDS we no longer want caps, in case we reopen + * the file. Delay a minimum amount of time, even if we send a cap + * message for some other reason. Otherwise, take the oppotunity to + * update the mds to avoid sending another message later. + */ +#define CEPH_CAPS_WANTED_DELAY_MIN_DEFAULT 5 /* cap release delay */ +#define CEPH_CAPS_WANTED_DELAY_MAX_DEFAULT 60 /* cap release delay */ + +#define CEPH_CAP_RELEASE_SAFETY_DEFAULT (CEPH_CAPS_PER_RELEASE * 4) + +/* mount state */ +enum { + CEPH_MOUNT_MOUNTING, + CEPH_MOUNT_MOUNTED, + CEPH_MOUNT_UNMOUNTING, + CEPH_MOUNT_UNMOUNTED, + CEPH_MOUNT_SHUTDOWN, +}; + +/* + * subtract jiffies + */ +static inline unsigned long time_sub(unsigned long a, unsigned long b) +{ + BUG_ON(time_after(b, a)); + return (long)a - (long)b; +} + +struct ceph_mds_client; + +/* + * per client state + * + * possibly shared by multiple mount points, if they are + * mounting the same ceph filesystem/cluster. + */ +struct ceph_client { + struct ceph_fsid fsid; + bool have_fsid; + + void *private; + + struct ceph_options *options; + + struct mutex mount_mutex; /* serialize mount attempts */ + wait_queue_head_t auth_wq; + int auth_err; + + int (*extra_mon_dispatch)(struct ceph_client *, struct ceph_msg *); + + u32 supported_features; + u32 required_features; + + struct ceph_messenger *msgr; /* messenger instance */ + struct ceph_mon_client monc; + struct ceph_osd_client osdc; + +#ifdef CONFIG_DEBUG_FS + struct dentry *debugfs_dir; + struct dentry *debugfs_monmap; + struct dentry *debugfs_osdmap; +#endif +}; + + + +/* + * snapshots + */ + +/* + * A "snap context" is the set of existing snapshots when we + * write data. It is used by the OSD to guide its COW behavior. + * + * The ceph_snap_context is refcounted, and attached to each dirty + * page, indicating which context the dirty data belonged when it was + * dirtied. + */ +struct ceph_snap_context { + atomic_t nref; + u64 seq; + int num_snaps; + u64 snaps[]; +}; + +static inline struct ceph_snap_context * +ceph_get_snap_context(struct ceph_snap_context *sc) +{ + /* + printk("get_snap_context %p %d -> %d\n", sc, atomic_read(&sc->nref), + atomic_read(&sc->nref)+1); + */ + if (sc) + atomic_inc(&sc->nref); + return sc; +} + +static inline void ceph_put_snap_context(struct ceph_snap_context *sc) +{ + if (!sc) + return; + /* + printk("put_snap_context %p %d -> %d\n", sc, atomic_read(&sc->nref), + atomic_read(&sc->nref)-1); + */ + if (atomic_dec_and_test(&sc->nref)) { + /*printk(" deleting snap_context %p\n", sc);*/ + kfree(sc); + } +} + +/* + * calculate the number of pages a given length and offset map onto, + * if we align the data. + */ +static inline int calc_pages_for(u64 off, u64 len) +{ + return ((off+len+PAGE_CACHE_SIZE-1) >> PAGE_CACHE_SHIFT) - + (off >> PAGE_CACHE_SHIFT); +} + +/* ceph_common.c */ +extern const char *ceph_msg_type_name(int type); +extern int ceph_check_fsid(struct ceph_client *client, struct ceph_fsid *fsid); +extern struct kmem_cache *ceph_inode_cachep; +extern struct kmem_cache *ceph_cap_cachep; +extern struct kmem_cache *ceph_dentry_cachep; +extern struct kmem_cache *ceph_file_cachep; + +extern int ceph_parse_options(struct ceph_options **popt, char *options, + const char *dev_name, const char *dev_name_end, + int (*parse_extra_token)(char *c, void *private), + void *private); +extern void ceph_destroy_options(struct ceph_options *opt); +extern int ceph_compare_options(struct ceph_options *new_opt, + struct ceph_client *client); +extern struct ceph_client *ceph_create_client(struct ceph_options *opt, + void *private); +extern u64 ceph_client_id(struct ceph_client *client); +extern void ceph_destroy_client(struct ceph_client *client); +extern int __ceph_open_session(struct ceph_client *client, + unsigned long started); +extern int ceph_open_session(struct ceph_client *client); + +/* pagevec.c */ +extern void ceph_release_page_vector(struct page **pages, int num_pages); + +extern struct page **ceph_get_direct_page_vector(const char __user *data, + int num_pages, + loff_t off, size_t len); +extern void ceph_put_page_vector(struct page **pages, int num_pages); +extern void ceph_release_page_vector(struct page **pages, int num_pages); +extern struct page **ceph_alloc_page_vector(int num_pages, gfp_t flags); +extern int ceph_copy_user_to_page_vector(struct page **pages, + const char __user *data, + loff_t off, size_t len); +extern int ceph_copy_to_page_vector(struct page **pages, + const char *data, + loff_t off, size_t len); +extern int ceph_copy_from_page_vector(struct page **pages, + char *data, + loff_t off, size_t len); +extern int ceph_copy_page_vector_to_user(struct page **pages, char __user *data, + loff_t off, size_t len); +extern void ceph_zero_page_vector_range(int off, int len, struct page **pages); + + +#endif /* _FS_CEPH_SUPER_H */ diff --git a/fs/ceph/mdsmap.h b/include/linux/ceph/mdsmap.h index 4c5cb0880bba..4c5cb0880bba 100644 --- a/fs/ceph/mdsmap.h +++ b/include/linux/ceph/mdsmap.h diff --git a/fs/ceph/messenger.h b/include/linux/ceph/messenger.h index 76fbc957bc13..5956d62c3057 100644 --- a/fs/ceph/messenger.h +++ b/include/linux/ceph/messenger.h @@ -65,6 +65,9 @@ struct ceph_messenger { */ u32 global_seq; spinlock_t global_seq_lock; + + u32 supported_features; + u32 required_features; }; /* @@ -82,6 +85,10 @@ struct ceph_msg { struct ceph_pagelist *pagelist; /* instead of pages */ struct list_head list_head; struct kref kref; + struct bio *bio; /* instead of pages/pagelist */ + struct bio *bio_iter; /* bio iterator */ + int bio_seg; /* current bio segment */ + struct ceph_pagelist *trail; /* the trailing part of the data */ bool front_is_vmalloc; bool more_to_follow; bool needs_out_seq; @@ -205,7 +212,7 @@ struct ceph_connection { }; -extern const char *pr_addr(const struct sockaddr_storage *ss); +extern const char *ceph_pr_addr(const struct sockaddr_storage *ss); extern int ceph_parse_ips(const char *c, const char *end, struct ceph_entity_addr *addr, int max_count, int *count); @@ -216,7 +223,8 @@ extern void ceph_msgr_exit(void); extern void ceph_msgr_flush(void); extern struct ceph_messenger *ceph_messenger_create( - struct ceph_entity_addr *myaddr); + struct ceph_entity_addr *myaddr, + u32 features, u32 required); extern void ceph_messenger_destroy(struct ceph_messenger *); extern void ceph_con_init(struct ceph_messenger *msgr, diff --git a/fs/ceph/mon_client.h b/include/linux/ceph/mon_client.h index 8e396f2c0963..545f85917780 100644 --- a/fs/ceph/mon_client.h +++ b/include/linux/ceph/mon_client.h @@ -79,6 +79,7 @@ struct ceph_mon_client { u64 last_tid; /* mds/osd map */ + int want_mdsmap; int want_next_osdmap; /* 1 = want, 2 = want+asked */ u32 have_osdmap, have_mdsmap; diff --git a/fs/ceph/msgpool.h b/include/linux/ceph/msgpool.h index a362605f9368..a362605f9368 100644 --- a/fs/ceph/msgpool.h +++ b/include/linux/ceph/msgpool.h diff --git a/fs/ceph/msgr.h b/include/linux/ceph/msgr.h index 680d3d648cac..680d3d648cac 100644 --- a/fs/ceph/msgr.h +++ b/include/linux/ceph/msgr.h diff --git a/fs/ceph/osd_client.h b/include/linux/ceph/osd_client.h index ce776989ef6a..6c91fb032c39 100644 --- a/fs/ceph/osd_client.h +++ b/include/linux/ceph/osd_client.h @@ -15,6 +15,7 @@ struct ceph_snap_context; struct ceph_osd_request; struct ceph_osd_client; struct ceph_authorizer; +struct ceph_pagelist; /* * completion callback for async writepages @@ -68,6 +69,7 @@ struct ceph_osd_request { struct list_head r_unsafe_item; struct inode *r_inode; /* for use by callbacks */ + void *r_priv; /* ditto */ char r_oid[40]; /* object name */ int r_oid_len; @@ -80,6 +82,11 @@ struct ceph_osd_request { struct page **r_pages; /* pages for data payload */ int r_pages_from_pool; int r_own_pages; /* if true, i own page list */ +#ifdef CONFIG_BLOCK + struct bio *r_bio; /* instead of pages */ +#endif + + struct ceph_pagelist *r_trail; /* trailing part of the data */ }; struct ceph_osd_client { @@ -110,6 +117,42 @@ struct ceph_osd_client { struct ceph_msgpool msgpool_op_reply; }; +struct ceph_osd_req_op { + u16 op; /* CEPH_OSD_OP_* */ + u32 flags; /* CEPH_OSD_FLAG_* */ + union { + struct { + u64 offset, length; + u64 truncate_size; + u32 truncate_seq; + } extent; + struct { + const char *name; + u32 name_len; + const char *val; + u32 value_len; + __u8 cmp_op; /* CEPH_OSD_CMPXATTR_OP_* */ + __u8 cmp_mode; /* CEPH_OSD_CMPXATTR_MODE_* */ + } xattr; + struct { + const char *class_name; + __u8 class_len; + const char *method_name; + __u8 method_len; + __u8 argc; + const char *indata; + u32 indata_len; + } cls; + struct { + u64 cookie, count; + } pgls; + struct { + u64 snapid; + } snap; + }; + u32 payload_len; +}; + extern int ceph_osdc_init(struct ceph_osd_client *osdc, struct ceph_client *client); extern void ceph_osdc_stop(struct ceph_osd_client *osdc); @@ -119,6 +162,30 @@ extern void ceph_osdc_handle_reply(struct ceph_osd_client *osdc, extern void ceph_osdc_handle_map(struct ceph_osd_client *osdc, struct ceph_msg *msg); +extern void ceph_calc_raw_layout(struct ceph_osd_client *osdc, + struct ceph_file_layout *layout, + u64 snapid, + u64 off, u64 *plen, u64 *bno, + struct ceph_osd_request *req, + struct ceph_osd_req_op *op); + +extern struct ceph_osd_request *ceph_osdc_alloc_request(struct ceph_osd_client *osdc, + int flags, + struct ceph_snap_context *snapc, + struct ceph_osd_req_op *ops, + bool use_mempool, + gfp_t gfp_flags, + struct page **pages, + struct bio *bio); + +extern void ceph_osdc_build_request(struct ceph_osd_request *req, + u64 off, u64 *plen, + struct ceph_osd_req_op *src_ops, + struct ceph_snap_context *snapc, + struct timespec *mtime, + const char *oid, + int oid_len); + extern struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *, struct ceph_file_layout *layout, struct ceph_vino vino, diff --git a/fs/ceph/osdmap.h b/include/linux/ceph/osdmap.h index 970b547e510d..ba4c205cbb01 100644 --- a/fs/ceph/osdmap.h +++ b/include/linux/ceph/osdmap.h @@ -4,7 +4,7 @@ #include <linux/rbtree.h> #include "types.h" #include "ceph_fs.h" -#include "crush/crush.h" +#include <linux/crush/crush.h> /* * The osd map describes the current membership of the osd cluster and @@ -125,4 +125,6 @@ extern int ceph_calc_pg_acting(struct ceph_osdmap *osdmap, struct ceph_pg pgid, extern int ceph_calc_pg_primary(struct ceph_osdmap *osdmap, struct ceph_pg pgid); +extern int ceph_pg_poolid_by_name(struct ceph_osdmap *map, const char *name); + #endif diff --git a/fs/ceph/pagelist.h b/include/linux/ceph/pagelist.h index e8a4187e1087..9660d6b0a35d 100644 --- a/fs/ceph/pagelist.h +++ b/include/linux/ceph/pagelist.h @@ -8,6 +8,14 @@ struct ceph_pagelist { void *mapped_tail; size_t length; size_t room; + struct list_head free_list; + size_t num_pages_free; +}; + +struct ceph_pagelist_cursor { + struct ceph_pagelist *pl; /* pagelist, for error checking */ + struct list_head *page_lru; /* page in list */ + size_t room; /* room remaining to reset to */ }; static inline void ceph_pagelist_init(struct ceph_pagelist *pl) @@ -16,10 +24,23 @@ static inline void ceph_pagelist_init(struct ceph_pagelist *pl) pl->mapped_tail = NULL; pl->length = 0; pl->room = 0; + INIT_LIST_HEAD(&pl->free_list); + pl->num_pages_free = 0; } + extern int ceph_pagelist_release(struct ceph_pagelist *pl); -extern int ceph_pagelist_append(struct ceph_pagelist *pl, void *d, size_t l); +extern int ceph_pagelist_append(struct ceph_pagelist *pl, const void *d, size_t l); + +extern int ceph_pagelist_reserve(struct ceph_pagelist *pl, size_t space); + +extern int ceph_pagelist_free_reserve(struct ceph_pagelist *pl); + +extern void ceph_pagelist_set_cursor(struct ceph_pagelist *pl, + struct ceph_pagelist_cursor *c); + +extern int ceph_pagelist_truncate(struct ceph_pagelist *pl, + struct ceph_pagelist_cursor *c); static inline int ceph_pagelist_encode_64(struct ceph_pagelist *pl, u64 v) { diff --git a/fs/ceph/rados.h b/include/linux/ceph/rados.h index 6d5247f2e81b..6d5247f2e81b 100644 --- a/fs/ceph/rados.h +++ b/include/linux/ceph/rados.h diff --git a/fs/ceph/types.h b/include/linux/ceph/types.h index 28b35a005ec2..28b35a005ec2 100644 --- a/fs/ceph/types.h +++ b/include/linux/ceph/types.h diff --git a/include/linux/cgroup.h b/include/linux/cgroup.h index 0c991023ee47..709dfb901d11 100644 --- a/include/linux/cgroup.h +++ b/include/linux/cgroup.h @@ -75,7 +75,7 @@ struct cgroup_subsys_state { unsigned long flags; /* ID for this css, if possible */ - struct css_id *id; + struct css_id __rcu *id; }; /* bits in struct cgroup_subsys_state flags field */ @@ -205,7 +205,7 @@ struct cgroup { struct list_head children; /* my children */ struct cgroup *parent; /* my parent */ - struct dentry *dentry; /* cgroup fs entry, RCU protected */ + struct dentry __rcu *dentry; /* cgroup fs entry, RCU protected */ /* Private pointers for each registered subsystem */ struct cgroup_subsys_state *subsys[CGROUP_SUBSYS_COUNT]; diff --git a/include/linux/compiler.h b/include/linux/compiler.h index c1a62c56a660..320d6c94ff84 100644 --- a/include/linux/compiler.h +++ b/include/linux/compiler.h @@ -16,7 +16,11 @@ # define __release(x) __context__(x,-1) # define __cond_lock(x,c) ((c) ? ({ __acquire(x); 1; }) : 0) # define __percpu __attribute__((noderef, address_space(3))) +#ifdef CONFIG_SPARSE_RCU_POINTER +# define __rcu __attribute__((noderef, address_space(4))) +#else # define __rcu +#endif extern void __chk_user_ptr(const volatile void __user *); extern void __chk_io_ptr(const volatile void __iomem *); #else diff --git a/include/linux/cred.h b/include/linux/cred.h index 4d2c39573f36..4aaeab376446 100644 --- a/include/linux/cred.h +++ b/include/linux/cred.h @@ -84,7 +84,7 @@ struct thread_group_cred { atomic_t usage; pid_t tgid; /* thread group process ID */ spinlock_t lock; - struct key *session_keyring; /* keyring inherited over fork */ + struct key __rcu *session_keyring; /* keyring inherited over fork */ struct key *process_keyring; /* keyring private to this process */ struct rcu_head rcu; /* RCU deletion hook */ }; diff --git a/fs/ceph/crush/crush.h b/include/linux/crush/crush.h index 97e435b191f4..97e435b191f4 100644 --- a/fs/ceph/crush/crush.h +++ b/include/linux/crush/crush.h diff --git a/fs/ceph/crush/hash.h b/include/linux/crush/hash.h index 91e884230d5d..91e884230d5d 100644 --- a/fs/ceph/crush/hash.h +++ b/include/linux/crush/hash.h diff --git a/fs/ceph/crush/mapper.h b/include/linux/crush/mapper.h index c46b99c18bb0..c46b99c18bb0 100644 --- a/fs/ceph/crush/mapper.h +++ b/include/linux/crush/mapper.h diff --git a/include/linux/debug_locks.h b/include/linux/debug_locks.h index 29b3ce3f2a1d..2833452ea01c 100644 --- a/include/linux/debug_locks.h +++ b/include/linux/debug_locks.h @@ -49,7 +49,6 @@ struct task_struct; #ifdef CONFIG_LOCKDEP extern void debug_show_all_locks(void); -extern void __debug_show_held_locks(struct task_struct *task); extern void debug_show_held_locks(struct task_struct *task); extern void debug_check_no_locks_freed(const void *from, unsigned long len); extern void debug_check_no_locks_held(struct task_struct *task); @@ -58,10 +57,6 @@ static inline void debug_show_all_locks(void) { } -static inline void __debug_show_held_locks(struct task_struct *task) -{ -} - static inline void debug_show_held_locks(struct task_struct *task) { } diff --git a/include/linux/dmar.h b/include/linux/dmar.h index d7cecc90ed34..a7d9dc21391d 100644 --- a/include/linux/dmar.h +++ b/include/linux/dmar.h @@ -57,15 +57,15 @@ extern int dmar_table_init(void); extern int dmar_dev_scope_init(void); /* Intel IOMMU detection */ -extern void detect_intel_iommu(void); +extern int detect_intel_iommu(void); extern int enable_drhd_fault_handling(void); extern int parse_ioapics_under_ir(void); extern int alloc_iommu(struct dmar_drhd_unit *); #else -static inline void detect_intel_iommu(void) +static inline int detect_intel_iommu(void) { - return; + return -ENODEV; } static inline int dmar_table_init(void) @@ -106,6 +106,7 @@ struct irte { __u64 high; }; }; + #ifdef CONFIG_INTR_REMAP extern int intr_remapping_enabled; extern int intr_remapping_supported(void); @@ -119,11 +120,8 @@ extern int alloc_irte(struct intel_iommu *iommu, int irq, u16 count); extern int set_irte_irq(int irq, struct intel_iommu *iommu, u16 index, u16 sub_handle); extern int map_irq_to_irte_handle(int irq, u16 *sub_handle); -extern int clear_irte_irq(int irq, struct intel_iommu *iommu, u16 index); -extern int flush_irte(int irq); extern int free_irte(int irq); -extern int irq_remapped(int irq); extern struct intel_iommu *map_dev_to_ir(struct pci_dev *dev); extern struct intel_iommu *map_ioapic_to_ir(int apic); extern struct intel_iommu *map_hpet_to_ir(u8 id); @@ -177,7 +175,6 @@ static inline int set_msi_sid(struct irte *irte, struct pci_dev *dev) return 0; } -#define irq_remapped(irq) (0) #define enable_intr_remapping(mode) (-1) #define disable_intr_remapping() (0) #define reenable_intr_remapping(mode) (0) @@ -187,8 +184,9 @@ static inline int set_msi_sid(struct irte *irte, struct pci_dev *dev) /* Can't use the common MSI interrupt functions * since DMAR is not a pci device */ -extern void dmar_msi_unmask(unsigned int irq); -extern void dmar_msi_mask(unsigned int irq); +struct irq_data; +extern void dmar_msi_unmask(struct irq_data *data); +extern void dmar_msi_mask(struct irq_data *data); extern void dmar_msi_read(int irq, struct msi_msg *msg); extern void dmar_msi_write(int irq, struct msi_msg *msg); extern int dmar_set_interrupt(struct intel_iommu *iommu); diff --git a/include/linux/dynamic_debug.h b/include/linux/dynamic_debug.h index 52c0da4bdd18..bef3cda44c4c 100644 --- a/include/linux/dynamic_debug.h +++ b/include/linux/dynamic_debug.h @@ -1,6 +1,8 @@ #ifndef _DYNAMIC_DEBUG_H #define _DYNAMIC_DEBUG_H +#include <linux/jump_label.h> + /* dynamic_printk_enabled, and dynamic_printk_enabled2 are bitmasks in which * bit n is set to 1 if any modname hashes into the bucket n, 0 otherwise. They * use independent hash functions, to reduce the chance of false positives. @@ -22,8 +24,6 @@ struct _ddebug { const char *function; const char *filename; const char *format; - char primary_hash; - char secondary_hash; unsigned int lineno:24; /* * The flags field controls the behaviour at the callsite. @@ -33,6 +33,7 @@ struct _ddebug { #define _DPRINTK_FLAGS_PRINT (1<<0) /* printk() a message using the format */ #define _DPRINTK_FLAGS_DEFAULT 0 unsigned int flags:8; + char enabled; } __attribute__((aligned(8))); @@ -42,33 +43,35 @@ int ddebug_add_module(struct _ddebug *tab, unsigned int n, #if defined(CONFIG_DYNAMIC_DEBUG) extern int ddebug_remove_module(const char *mod_name); -#define __dynamic_dbg_enabled(dd) ({ \ - int __ret = 0; \ - if (unlikely((dynamic_debug_enabled & (1LL << DEBUG_HASH)) && \ - (dynamic_debug_enabled2 & (1LL << DEBUG_HASH2)))) \ - if (unlikely(dd.flags)) \ - __ret = 1; \ - __ret; }) - #define dynamic_pr_debug(fmt, ...) do { \ + __label__ do_printk; \ + __label__ out; \ static struct _ddebug descriptor \ __used \ __attribute__((section("__verbose"), aligned(8))) = \ - { KBUILD_MODNAME, __func__, __FILE__, fmt, DEBUG_HASH, \ - DEBUG_HASH2, __LINE__, _DPRINTK_FLAGS_DEFAULT }; \ - if (__dynamic_dbg_enabled(descriptor)) \ - printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__); \ + { KBUILD_MODNAME, __func__, __FILE__, fmt, __LINE__, \ + _DPRINTK_FLAGS_DEFAULT }; \ + JUMP_LABEL(&descriptor.enabled, do_printk); \ + goto out; \ +do_printk: \ + printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__); \ +out: ; \ } while (0) #define dynamic_dev_dbg(dev, fmt, ...) do { \ + __label__ do_printk; \ + __label__ out; \ static struct _ddebug descriptor \ __used \ __attribute__((section("__verbose"), aligned(8))) = \ - { KBUILD_MODNAME, __func__, __FILE__, fmt, DEBUG_HASH, \ - DEBUG_HASH2, __LINE__, _DPRINTK_FLAGS_DEFAULT }; \ - if (__dynamic_dbg_enabled(descriptor)) \ - dev_printk(KERN_DEBUG, dev, fmt, ##__VA_ARGS__); \ + { KBUILD_MODNAME, __func__, __FILE__, fmt, __LINE__, \ + _DPRINTK_FLAGS_DEFAULT }; \ + JUMP_LABEL(&descriptor.enabled, do_printk); \ + goto out; \ +do_printk: \ + dev_printk(KERN_DEBUG, dev, fmt, ##__VA_ARGS__); \ +out: ; \ } while (0) #else diff --git a/include/linux/edac.h b/include/linux/edac.h index 7cf92e8a4196..36c66443bdfd 100644 --- a/include/linux/edac.h +++ b/include/linux/edac.h @@ -13,6 +13,7 @@ #define _LINUX_EDAC_H_ #include <asm/atomic.h> +#include <linux/sysdev.h> #define EDAC_OPSTATE_INVAL -1 #define EDAC_OPSTATE_POLL 0 @@ -22,9 +23,12 @@ extern int edac_op_state; extern int edac_err_assert; extern atomic_t edac_handlers; +extern struct sysdev_class edac_class; extern int edac_handler_set(void); extern void edac_atomic_assert_error(void); +extern struct sysdev_class *edac_get_sysfs_class(void); +extern void edac_put_sysfs_class(void); static inline void opstate_init(void) { diff --git a/include/linux/fdtable.h b/include/linux/fdtable.h index f59ed297b661..133c0ba25e30 100644 --- a/include/linux/fdtable.h +++ b/include/linux/fdtable.h @@ -31,7 +31,7 @@ struct embedded_fd_set { struct fdtable { unsigned int max_fds; - struct file ** fd; /* current fd array */ + struct file __rcu **fd; /* current fd array */ fd_set *close_on_exec; fd_set *open_fds; struct rcu_head rcu; @@ -46,7 +46,7 @@ struct files_struct { * read mostly part */ atomic_t count; - struct fdtable *fdt; + struct fdtable __rcu *fdt; struct fdtable fdtab; /* * written part on a separate cache line in SMP @@ -55,7 +55,7 @@ struct files_struct { int next_fd; struct embedded_fd_set close_on_exec_init; struct embedded_fd_set open_fds_init; - struct file * fd_array[NR_OPEN_DEFAULT]; + struct file __rcu * fd_array[NR_OPEN_DEFAULT]; }; #define rcu_dereference_check_fdtable(files, fdtfd) \ diff --git a/include/linux/fs.h b/include/linux/fs.h index 63d069bd80b7..3168dcfb94f2 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -1384,7 +1384,7 @@ struct super_block { * Saved mount options for lazy filesystems using * generic_show_options() */ - char *s_options; + char __rcu *s_options; }; extern struct timespec current_fs_time(struct super_block *sb); diff --git a/include/linux/ftrace_event.h b/include/linux/ftrace_event.h index 02b8b24f8f51..8beabb958f61 100644 --- a/include/linux/ftrace_event.h +++ b/include/linux/ftrace_event.h @@ -191,8 +191,8 @@ struct ftrace_event_call { unsigned int flags; #ifdef CONFIG_PERF_EVENTS - int perf_refcount; - struct hlist_head *perf_events; + int perf_refcount; + struct hlist_head __percpu *perf_events; #endif }; @@ -252,8 +252,8 @@ DECLARE_PER_CPU(struct pt_regs, perf_trace_regs); extern int perf_trace_init(struct perf_event *event); extern void perf_trace_destroy(struct perf_event *event); -extern int perf_trace_enable(struct perf_event *event); -extern void perf_trace_disable(struct perf_event *event); +extern int perf_trace_add(struct perf_event *event, int flags); +extern void perf_trace_del(struct perf_event *event, int flags); extern int ftrace_profile_set_filter(struct perf_event *event, int event_id, char *filter_str); extern void ftrace_profile_free_filter(struct perf_event *event); diff --git a/include/linux/genhd.h b/include/linux/genhd.h index 5f2f4c4d8fb0..af3f06b41dc1 100644 --- a/include/linux/genhd.h +++ b/include/linux/genhd.h @@ -129,8 +129,8 @@ struct blk_scsi_cmd_filter { struct disk_part_tbl { struct rcu_head rcu_head; int len; - struct hd_struct *last_lookup; - struct hd_struct *part[]; + struct hd_struct __rcu *last_lookup; + struct hd_struct __rcu *part[]; }; struct gendisk { @@ -149,7 +149,7 @@ struct gendisk { * non-critical accesses use RCU. Always access through * helpers. */ - struct disk_part_tbl *part_tbl; + struct disk_part_tbl __rcu *part_tbl; struct hd_struct part0; const struct block_device_operations *fops; diff --git a/include/linux/hardirq.h b/include/linux/hardirq.h index d5b387669dab..8a389b608ce3 100644 --- a/include/linux/hardirq.h +++ b/include/linux/hardirq.h @@ -8,7 +8,6 @@ #include <linux/lockdep.h> #include <linux/ftrace_irq.h> #include <asm/hardirq.h> -#include <asm/system.h> /* * We put the hardirq and softirq counter into the preemption @@ -64,6 +63,8 @@ #define HARDIRQ_OFFSET (1UL << HARDIRQ_SHIFT) #define NMI_OFFSET (1UL << NMI_SHIFT) +#define SOFTIRQ_DISABLE_OFFSET (2 * SOFTIRQ_OFFSET) + #ifndef PREEMPT_ACTIVE #define PREEMPT_ACTIVE_BITS 1 #define PREEMPT_ACTIVE_SHIFT (NMI_SHIFT + NMI_BITS) @@ -82,10 +83,13 @@ /* * Are we doing bottom half or hardware interrupt processing? * Are we in a softirq context? Interrupt context? + * in_softirq - Are we currently processing softirq or have bh disabled? + * in_serving_softirq - Are we currently processing softirq? */ #define in_irq() (hardirq_count()) #define in_softirq() (softirq_count()) #define in_interrupt() (irq_count()) +#define in_serving_softirq() (softirq_count() & SOFTIRQ_OFFSET) /* * Are we in NMI context? @@ -132,14 +136,16 @@ extern void synchronize_irq(unsigned int irq); struct task_struct; -#ifndef CONFIG_VIRT_CPU_ACCOUNTING +#if !defined(CONFIG_VIRT_CPU_ACCOUNTING) && !defined(CONFIG_IRQ_TIME_ACCOUNTING) static inline void account_system_vtime(struct task_struct *tsk) { } +#else +extern void account_system_vtime(struct task_struct *tsk); #endif #if defined(CONFIG_NO_HZ) -#if defined(CONFIG_TINY_RCU) +#if defined(CONFIG_TINY_RCU) || defined(CONFIG_TINY_PREEMPT_RCU) extern void rcu_enter_nohz(void); extern void rcu_exit_nohz(void); diff --git a/include/linux/htirq.h b/include/linux/htirq.h index c96ea46737d0..70a1dbbf2093 100644 --- a/include/linux/htirq.h +++ b/include/linux/htirq.h @@ -9,8 +9,9 @@ struct ht_irq_msg { /* Helper functions.. */ void fetch_ht_irq_msg(unsigned int irq, struct ht_irq_msg *msg); void write_ht_irq_msg(unsigned int irq, struct ht_irq_msg *msg); -void mask_ht_irq(unsigned int irq); -void unmask_ht_irq(unsigned int irq); +struct irq_data; +void mask_ht_irq(struct irq_data *data); +void unmask_ht_irq(struct irq_data *data); /* The arch hook for getting things started */ int arch_setup_ht_irq(unsigned int irq, struct pci_dev *dev); diff --git a/include/linux/idr.h b/include/linux/idr.h index e968db71e33a..cdb715e58e3e 100644 --- a/include/linux/idr.h +++ b/include/linux/idr.h @@ -50,14 +50,14 @@ struct idr_layer { unsigned long bitmap; /* A zero bit means "space here" */ - struct idr_layer *ary[1<<IDR_BITS]; + struct idr_layer __rcu *ary[1<<IDR_BITS]; int count; /* When zero, we can release it */ int layer; /* distance from leaf */ struct rcu_head rcu_head; }; struct idr { - struct idr_layer *top; + struct idr_layer __rcu *top; struct idr_layer *id_free; int layers; /* only valid without concurrent changes */ int id_free_cnt; diff --git a/include/linux/init_task.h b/include/linux/init_task.h index 1f43fa56f600..2fea6c8ef6ba 100644 --- a/include/linux/init_task.h +++ b/include/linux/init_task.h @@ -82,11 +82,17 @@ extern struct group_info init_groups; # define CAP_INIT_BSET CAP_FULL_SET #ifdef CONFIG_TREE_PREEMPT_RCU +#define INIT_TASK_RCU_TREE_PREEMPT() \ + .rcu_blocked_node = NULL, +#else +#define INIT_TASK_RCU_TREE_PREEMPT(tsk) +#endif +#ifdef CONFIG_PREEMPT_RCU #define INIT_TASK_RCU_PREEMPT(tsk) \ .rcu_read_lock_nesting = 0, \ .rcu_read_unlock_special = 0, \ - .rcu_blocked_node = NULL, \ - .rcu_node_entry = LIST_HEAD_INIT(tsk.rcu_node_entry), + .rcu_node_entry = LIST_HEAD_INIT(tsk.rcu_node_entry), \ + INIT_TASK_RCU_TREE_PREEMPT() #else #define INIT_TASK_RCU_PREEMPT(tsk) #endif @@ -137,8 +143,8 @@ extern struct cred init_cred; .children = LIST_HEAD_INIT(tsk.children), \ .sibling = LIST_HEAD_INIT(tsk.sibling), \ .group_leader = &tsk, \ - .real_cred = &init_cred, \ - .cred = &init_cred, \ + RCU_INIT_POINTER(.real_cred, &init_cred), \ + RCU_INIT_POINTER(.cred, &init_cred), \ .cred_guard_mutex = \ __MUTEX_INITIALIZER(tsk.cred_guard_mutex), \ .comm = "swapper", \ diff --git a/include/linux/input.h b/include/linux/input.h index 896a92227bc4..d6ae1761be97 100644 --- a/include/linux/input.h +++ b/include/linux/input.h @@ -1196,7 +1196,7 @@ struct input_dev { int (*flush)(struct input_dev *dev, struct file *file); int (*event)(struct input_dev *dev, unsigned int type, unsigned int code, int value); - struct input_handle *grab; + struct input_handle __rcu *grab; spinlock_t event_lock; struct mutex mutex; diff --git a/include/linux/interrupt.h b/include/linux/interrupt.h index a0384a4d1e6f..414328577ced 100644 --- a/include/linux/interrupt.h +++ b/include/linux/interrupt.h @@ -18,6 +18,7 @@ #include <asm/atomic.h> #include <asm/ptrace.h> #include <asm/system.h> +#include <trace/events/irq.h> /* * These correspond to the IORESOURCE_IRQ_* defines in @@ -407,7 +408,12 @@ asmlinkage void do_softirq(void); asmlinkage void __do_softirq(void); extern void open_softirq(int nr, void (*action)(struct softirq_action *)); extern void softirq_init(void); -#define __raise_softirq_irqoff(nr) do { or_softirq_pending(1UL << (nr)); } while (0) +static inline void __raise_softirq_irqoff(unsigned int nr) +{ + trace_softirq_raise((struct softirq_action *)(unsigned long)nr, NULL); + or_softirq_pending(1UL << nr); +} + extern void raise_softirq_irqoff(unsigned int nr); extern void raise_softirq(unsigned int nr); extern void wakeup_softirqd(void); @@ -641,11 +647,8 @@ static inline void init_irq_proc(void) struct seq_file; int show_interrupts(struct seq_file *p, void *v); -struct irq_desc; - extern int early_irq_init(void); extern int arch_probe_nr_irqs(void); extern int arch_early_irq_init(void); -extern int arch_init_chip_data(struct irq_desc *desc, int node); #endif diff --git a/include/linux/iocontext.h b/include/linux/iocontext.h index 64d529133031..3e70b21884a9 100644 --- a/include/linux/iocontext.h +++ b/include/linux/iocontext.h @@ -53,7 +53,7 @@ struct io_context { struct radix_tree_root radix_root; struct hlist_head cic_list; - void *ioc_data; + void __rcu *ioc_data; }; static inline struct io_context *ioc_task_link(struct io_context *ioc) diff --git a/include/linux/irq.h b/include/linux/irq.h index c03243ad84b4..e9639115dff1 100644 --- a/include/linux/irq.h +++ b/include/linux/irq.h @@ -72,6 +72,10 @@ typedef void (*irq_flow_handler_t)(unsigned int irq, #define IRQ_ONESHOT 0x08000000 /* IRQ is not unmasked after hardirq */ #define IRQ_NESTED_THREAD 0x10000000 /* IRQ is nested into another, no own handler thread */ +#define IRQF_MODIFY_MASK \ + (IRQ_TYPE_SENSE_MASK | IRQ_NOPROBE | IRQ_NOREQUEST | \ + IRQ_NOAUTOEN | IRQ_MOVE_PCNTXT | IRQ_LEVEL) + #ifdef CONFIG_IRQ_PER_CPU # define CHECK_IRQ_PER_CPU(var) ((var) & IRQ_PER_CPU) # define IRQ_NO_BALANCING_MASK (IRQ_PER_CPU | IRQ_NO_BALANCING) @@ -80,36 +84,77 @@ typedef void (*irq_flow_handler_t)(unsigned int irq, # define IRQ_NO_BALANCING_MASK IRQ_NO_BALANCING #endif -struct proc_dir_entry; struct msi_desc; /** + * struct irq_data - per irq and irq chip data passed down to chip functions + * @irq: interrupt number + * @node: node index useful for balancing + * @chip: low level interrupt hardware access + * @handler_data: per-IRQ data for the irq_chip methods + * @chip_data: platform-specific per-chip private data for the chip + * methods, to allow shared chip implementations + * @msi_desc: MSI descriptor + * @affinity: IRQ affinity on SMP + * + * The fields here need to overlay the ones in irq_desc until we + * cleaned up the direct references and switched everything over to + * irq_data. + */ +struct irq_data { + unsigned int irq; + unsigned int node; + struct irq_chip *chip; + void *handler_data; + void *chip_data; + struct msi_desc *msi_desc; +#ifdef CONFIG_SMP + cpumask_var_t affinity; +#endif +}; + +/** * struct irq_chip - hardware interrupt chip descriptor * * @name: name for /proc/interrupts - * @startup: start up the interrupt (defaults to ->enable if NULL) - * @shutdown: shut down the interrupt (defaults to ->disable if NULL) - * @enable: enable the interrupt (defaults to chip->unmask if NULL) - * @disable: disable the interrupt - * @ack: start of a new interrupt - * @mask: mask an interrupt source - * @mask_ack: ack and mask an interrupt source - * @unmask: unmask an interrupt source - * @eoi: end of interrupt - chip level - * @end: end of interrupt - flow level - * @set_affinity: set the CPU affinity on SMP machines - * @retrigger: resend an IRQ to the CPU - * @set_type: set the flow type (IRQ_TYPE_LEVEL/etc.) of an IRQ - * @set_wake: enable/disable power-management wake-on of an IRQ + * @startup: deprecated, replaced by irq_startup + * @shutdown: deprecated, replaced by irq_shutdown + * @enable: deprecated, replaced by irq_enable + * @disable: deprecated, replaced by irq_disable + * @ack: deprecated, replaced by irq_ack + * @mask: deprecated, replaced by irq_mask + * @mask_ack: deprecated, replaced by irq_mask_ack + * @unmask: deprecated, replaced by irq_unmask + * @eoi: deprecated, replaced by irq_eoi + * @end: deprecated, will go away with __do_IRQ() + * @set_affinity: deprecated, replaced by irq_set_affinity + * @retrigger: deprecated, replaced by irq_retrigger + * @set_type: deprecated, replaced by irq_set_type + * @set_wake: deprecated, replaced by irq_wake + * @bus_lock: deprecated, replaced by irq_bus_lock + * @bus_sync_unlock: deprecated, replaced by irq_bus_sync_unlock * - * @bus_lock: function to lock access to slow bus (i2c) chips - * @bus_sync_unlock: function to sync and unlock slow bus (i2c) chips + * @irq_startup: start up the interrupt (defaults to ->enable if NULL) + * @irq_shutdown: shut down the interrupt (defaults to ->disable if NULL) + * @irq_enable: enable the interrupt (defaults to chip->unmask if NULL) + * @irq_disable: disable the interrupt + * @irq_ack: start of a new interrupt + * @irq_mask: mask an interrupt source + * @irq_mask_ack: ack and mask an interrupt source + * @irq_unmask: unmask an interrupt source + * @irq_eoi: end of interrupt + * @irq_set_affinity: set the CPU affinity on SMP machines + * @irq_retrigger: resend an IRQ to the CPU + * @irq_set_type: set the flow type (IRQ_TYPE_LEVEL/etc.) of an IRQ + * @irq_set_wake: enable/disable power-management wake-on of an IRQ + * @irq_bus_lock: function to lock access to slow bus (i2c) chips + * @irq_bus_sync_unlock:function to sync and unlock slow bus (i2c) chips * * @release: release function solely used by UML - * @typename: obsoleted by name, kept as migration helper */ struct irq_chip { const char *name; +#ifndef CONFIG_GENERIC_HARDIRQS_NO_DEPRECATED unsigned int (*startup)(unsigned int irq); void (*shutdown)(unsigned int irq); void (*enable)(unsigned int irq); @@ -130,154 +175,66 @@ struct irq_chip { void (*bus_lock)(unsigned int irq); void (*bus_sync_unlock)(unsigned int irq); +#endif + unsigned int (*irq_startup)(struct irq_data *data); + void (*irq_shutdown)(struct irq_data *data); + void (*irq_enable)(struct irq_data *data); + void (*irq_disable)(struct irq_data *data); + + void (*irq_ack)(struct irq_data *data); + void (*irq_mask)(struct irq_data *data); + void (*irq_mask_ack)(struct irq_data *data); + void (*irq_unmask)(struct irq_data *data); + void (*irq_eoi)(struct irq_data *data); + + int (*irq_set_affinity)(struct irq_data *data, const struct cpumask *dest, bool force); + int (*irq_retrigger)(struct irq_data *data); + int (*irq_set_type)(struct irq_data *data, unsigned int flow_type); + int (*irq_set_wake)(struct irq_data *data, unsigned int on); + + void (*irq_bus_lock)(struct irq_data *data); + void (*irq_bus_sync_unlock)(struct irq_data *data); /* Currently used only by UML, might disappear one day.*/ #ifdef CONFIG_IRQ_RELEASE_METHOD void (*release)(unsigned int irq, void *dev_id); #endif - /* - * For compatibility, ->typename is copied into ->name. - * Will disappear. - */ - const char *typename; }; -struct timer_rand_state; -struct irq_2_iommu; -/** - * struct irq_desc - interrupt descriptor - * @irq: interrupt number for this descriptor - * @timer_rand_state: pointer to timer rand state struct - * @kstat_irqs: irq stats per cpu - * @irq_2_iommu: iommu with this irq - * @handle_irq: highlevel irq-events handler [if NULL, __do_IRQ()] - * @chip: low level interrupt hardware access - * @msi_desc: MSI descriptor - * @handler_data: per-IRQ data for the irq_chip methods - * @chip_data: platform-specific per-chip private data for the chip - * methods, to allow shared chip implementations - * @action: the irq action chain - * @status: status information - * @depth: disable-depth, for nested irq_disable() calls - * @wake_depth: enable depth, for multiple set_irq_wake() callers - * @irq_count: stats field to detect stalled irqs - * @last_unhandled: aging timer for unhandled count - * @irqs_unhandled: stats field for spurious unhandled interrupts - * @lock: locking for SMP - * @affinity: IRQ affinity on SMP - * @node: node index useful for balancing - * @pending_mask: pending rebalanced interrupts - * @threads_active: number of irqaction threads currently running - * @wait_for_threads: wait queue for sync_irq to wait for threaded handlers - * @dir: /proc/irq/ procfs entry - * @name: flow handler name for /proc/interrupts output - */ -struct irq_desc { - unsigned int irq; - struct timer_rand_state *timer_rand_state; - unsigned int *kstat_irqs; -#ifdef CONFIG_INTR_REMAP - struct irq_2_iommu *irq_2_iommu; -#endif - irq_flow_handler_t handle_irq; - struct irq_chip *chip; - struct msi_desc *msi_desc; - void *handler_data; - void *chip_data; - struct irqaction *action; /* IRQ action list */ - unsigned int status; /* IRQ status */ - - unsigned int depth; /* nested irq disables */ - unsigned int wake_depth; /* nested wake enables */ - unsigned int irq_count; /* For detecting broken IRQs */ - unsigned long last_unhandled; /* Aging timer for unhandled count */ - unsigned int irqs_unhandled; - raw_spinlock_t lock; -#ifdef CONFIG_SMP - cpumask_var_t affinity; - const struct cpumask *affinity_hint; - unsigned int node; -#ifdef CONFIG_GENERIC_PENDING_IRQ - cpumask_var_t pending_mask; -#endif -#endif - atomic_t threads_active; - wait_queue_head_t wait_for_threads; -#ifdef CONFIG_PROC_FS - struct proc_dir_entry *dir; -#endif - const char *name; -} ____cacheline_internodealigned_in_smp; +/* This include will go away once we isolated irq_desc usage to core code */ +#include <linux/irqdesc.h> -extern void arch_init_copy_chip_data(struct irq_desc *old_desc, - struct irq_desc *desc, int node); -extern void arch_free_chip_data(struct irq_desc *old_desc, struct irq_desc *desc); +/* + * Pick up the arch-dependent methods: + */ +#include <asm/hw_irq.h> -#ifndef CONFIG_SPARSE_IRQ -extern struct irq_desc irq_desc[NR_IRQS]; +#ifndef NR_IRQS_LEGACY +# define NR_IRQS_LEGACY 0 #endif -#ifdef CONFIG_NUMA_IRQ_DESC -extern struct irq_desc *move_irq_desc(struct irq_desc *old_desc, int node); -#else -static inline struct irq_desc *move_irq_desc(struct irq_desc *desc, int node) -{ - return desc; -} +#ifndef ARCH_IRQ_INIT_FLAGS +# define ARCH_IRQ_INIT_FLAGS 0 #endif -extern struct irq_desc *irq_to_desc_alloc_node(unsigned int irq, int node); - -/* - * Pick up the arch-dependent methods: - */ -#include <asm/hw_irq.h> +#define IRQ_DEFAULT_INIT_FLAGS (IRQ_DISABLED | ARCH_IRQ_INIT_FLAGS) +struct irqaction; extern int setup_irq(unsigned int irq, struct irqaction *new); extern void remove_irq(unsigned int irq, struct irqaction *act); #ifdef CONFIG_GENERIC_HARDIRQS -#ifdef CONFIG_SMP - -#ifdef CONFIG_GENERIC_PENDING_IRQ - +#if defined(CONFIG_SMP) && defined(CONFIG_GENERIC_PENDING_IRQ) void move_native_irq(int irq); void move_masked_irq(int irq); - -#else /* CONFIG_GENERIC_PENDING_IRQ */ - -static inline void move_irq(int irq) -{ -} - -static inline void move_native_irq(int irq) -{ -} - -static inline void move_masked_irq(int irq) -{ -} - -#endif /* CONFIG_GENERIC_PENDING_IRQ */ - -#else /* CONFIG_SMP */ - -#define move_native_irq(x) -#define move_masked_irq(x) - -#endif /* CONFIG_SMP */ +#else +static inline void move_native_irq(int irq) { } +static inline void move_masked_irq(int irq) { } +#endif extern int no_irq_affinity; -static inline int irq_balancing_disabled(unsigned int irq) -{ - struct irq_desc *desc; - - desc = irq_to_desc(irq); - return desc->status & IRQ_NO_BALANCING_MASK; -} - /* Handle irq action chains: */ extern irqreturn_t handle_IRQ_event(unsigned int irq, struct irqaction *action); @@ -293,42 +250,10 @@ extern void handle_percpu_irq(unsigned int irq, struct irq_desc *desc); extern void handle_bad_irq(unsigned int irq, struct irq_desc *desc); extern void handle_nested_irq(unsigned int irq); -/* - * Monolithic do_IRQ implementation. - */ -#ifndef CONFIG_GENERIC_HARDIRQS_NO__DO_IRQ -extern unsigned int __do_IRQ(unsigned int irq); -#endif - -/* - * Architectures call this to let the generic IRQ layer - * handle an interrupt. If the descriptor is attached to an - * irqchip-style controller then we call the ->handle_irq() handler, - * and it calls __do_IRQ() if it's attached to an irqtype-style controller. - */ -static inline void generic_handle_irq_desc(unsigned int irq, struct irq_desc *desc) -{ -#ifdef CONFIG_GENERIC_HARDIRQS_NO__DO_IRQ - desc->handle_irq(irq, desc); -#else - if (likely(desc->handle_irq)) - desc->handle_irq(irq, desc); - else - __do_IRQ(irq); -#endif -} - -static inline void generic_handle_irq(unsigned int irq) -{ - generic_handle_irq_desc(irq, irq_to_desc(irq)); -} - /* Handling of unhandled and spurious interrupts: */ extern void note_interrupt(unsigned int irq, struct irq_desc *desc, irqreturn_t action_ret); -/* Resending of interrupts :*/ -void check_irq_resend(struct irq_desc *desc, unsigned int irq); /* Enable/disable irq debugging output: */ extern int noirqdebug_setup(char *str); @@ -351,16 +276,6 @@ extern void __set_irq_handler(unsigned int irq, irq_flow_handler_t handle, int is_chained, const char *name); -/* caller has locked the irq_desc and both params are valid */ -static inline void __set_irq_handler_unlocked(int irq, - irq_flow_handler_t handler) -{ - struct irq_desc *desc; - - desc = irq_to_desc(irq); - desc->handle_irq = handler; -} - /* * Set a highlevel flow handler for a given IRQ: */ @@ -384,141 +299,121 @@ set_irq_chained_handler(unsigned int irq, extern void set_irq_nested_thread(unsigned int irq, int nest); -extern void set_irq_noprobe(unsigned int irq); -extern void set_irq_probe(unsigned int irq); +void irq_modify_status(unsigned int irq, unsigned long clr, unsigned long set); + +static inline void irq_set_status_flags(unsigned int irq, unsigned long set) +{ + irq_modify_status(irq, 0, set); +} + +static inline void irq_clear_status_flags(unsigned int irq, unsigned long clr) +{ + irq_modify_status(irq, clr, 0); +} + +static inline void set_irq_noprobe(unsigned int irq) +{ + irq_modify_status(irq, 0, IRQ_NOPROBE); +} + +static inline void set_irq_probe(unsigned int irq) +{ + irq_modify_status(irq, IRQ_NOPROBE, 0); +} /* Handle dynamic irq creation and destruction */ extern unsigned int create_irq_nr(unsigned int irq_want, int node); extern int create_irq(void); extern void destroy_irq(unsigned int irq); -/* Test to see if a driver has successfully requested an irq */ -static inline int irq_has_action(unsigned int irq) +/* + * Dynamic irq helper functions. Obsolete. Use irq_alloc_desc* and + * irq_free_desc instead. + */ +extern void dynamic_irq_cleanup(unsigned int irq); +static inline void dynamic_irq_init(unsigned int irq) { - struct irq_desc *desc = irq_to_desc(irq); - return desc->action != NULL; + dynamic_irq_cleanup(irq); } -/* Dynamic irq helper functions */ -extern void dynamic_irq_init(unsigned int irq); -void dynamic_irq_init_keep_chip_data(unsigned int irq); -extern void dynamic_irq_cleanup(unsigned int irq); -void dynamic_irq_cleanup_keep_chip_data(unsigned int irq); - /* Set/get chip/data for an IRQ: */ extern int set_irq_chip(unsigned int irq, struct irq_chip *chip); extern int set_irq_data(unsigned int irq, void *data); extern int set_irq_chip_data(unsigned int irq, void *data); extern int set_irq_type(unsigned int irq, unsigned int type); extern int set_irq_msi(unsigned int irq, struct msi_desc *entry); +extern struct irq_data *irq_get_irq_data(unsigned int irq); -#define get_irq_chip(irq) (irq_to_desc(irq)->chip) -#define get_irq_chip_data(irq) (irq_to_desc(irq)->chip_data) -#define get_irq_data(irq) (irq_to_desc(irq)->handler_data) -#define get_irq_msi(irq) (irq_to_desc(irq)->msi_desc) - -#define get_irq_desc_chip(desc) ((desc)->chip) -#define get_irq_desc_chip_data(desc) ((desc)->chip_data) -#define get_irq_desc_data(desc) ((desc)->handler_data) -#define get_irq_desc_msi(desc) ((desc)->msi_desc) - -#endif /* CONFIG_GENERIC_HARDIRQS */ - -#endif /* !CONFIG_S390 */ - -#ifdef CONFIG_SMP -/** - * alloc_desc_masks - allocate cpumasks for irq_desc - * @desc: pointer to irq_desc struct - * @node: node which will be handling the cpumasks - * @boot: true if need bootmem - * - * Allocates affinity and pending_mask cpumask if required. - * Returns true if successful (or not required). - */ -static inline bool alloc_desc_masks(struct irq_desc *desc, int node, - bool boot) +static inline struct irq_chip *get_irq_chip(unsigned int irq) { - gfp_t gfp = GFP_ATOMIC; - - if (boot) - gfp = GFP_NOWAIT; - -#ifdef CONFIG_CPUMASK_OFFSTACK - if (!alloc_cpumask_var_node(&desc->affinity, gfp, node)) - return false; + struct irq_data *d = irq_get_irq_data(irq); + return d ? d->chip : NULL; +} -#ifdef CONFIG_GENERIC_PENDING_IRQ - if (!alloc_cpumask_var_node(&desc->pending_mask, gfp, node)) { - free_cpumask_var(desc->affinity); - return false; - } -#endif -#endif - return true; +static inline struct irq_chip *irq_data_get_irq_chip(struct irq_data *d) +{ + return d->chip; } -static inline void init_desc_masks(struct irq_desc *desc) +static inline void *get_irq_chip_data(unsigned int irq) { - cpumask_setall(desc->affinity); -#ifdef CONFIG_GENERIC_PENDING_IRQ - cpumask_clear(desc->pending_mask); -#endif + struct irq_data *d = irq_get_irq_data(irq); + return d ? d->chip_data : NULL; } -/** - * init_copy_desc_masks - copy cpumasks for irq_desc - * @old_desc: pointer to old irq_desc struct - * @new_desc: pointer to new irq_desc struct - * - * Insures affinity and pending_masks are copied to new irq_desc. - * If !CONFIG_CPUMASKS_OFFSTACK the cpumasks are embedded in the - * irq_desc struct so the copy is redundant. - */ +static inline void *irq_data_get_irq_chip_data(struct irq_data *d) +{ + return d->chip_data; +} -static inline void init_copy_desc_masks(struct irq_desc *old_desc, - struct irq_desc *new_desc) +static inline void *get_irq_data(unsigned int irq) { -#ifdef CONFIG_CPUMASK_OFFSTACK - cpumask_copy(new_desc->affinity, old_desc->affinity); + struct irq_data *d = irq_get_irq_data(irq); + return d ? d->handler_data : NULL; +} -#ifdef CONFIG_GENERIC_PENDING_IRQ - cpumask_copy(new_desc->pending_mask, old_desc->pending_mask); -#endif -#endif +static inline void *irq_data_get_irq_data(struct irq_data *d) +{ + return d->handler_data; } -static inline void free_desc_masks(struct irq_desc *old_desc, - struct irq_desc *new_desc) +static inline struct msi_desc *get_irq_msi(unsigned int irq) { - free_cpumask_var(old_desc->affinity); + struct irq_data *d = irq_get_irq_data(irq); + return d ? d->msi_desc : NULL; +} -#ifdef CONFIG_GENERIC_PENDING_IRQ - free_cpumask_var(old_desc->pending_mask); -#endif +static inline struct msi_desc *irq_data_get_msi(struct irq_data *d) +{ + return d->msi_desc; } -#else /* !CONFIG_SMP */ +int irq_alloc_descs(int irq, unsigned int from, unsigned int cnt, int node); +void irq_free_descs(unsigned int irq, unsigned int cnt); +int irq_reserve_irqs(unsigned int from, unsigned int cnt); -static inline bool alloc_desc_masks(struct irq_desc *desc, int node, - bool boot) +static inline int irq_alloc_desc(int node) { - return true; + return irq_alloc_descs(-1, 0, 1, node); } -static inline void init_desc_masks(struct irq_desc *desc) +static inline int irq_alloc_desc_at(unsigned int at, int node) { + return irq_alloc_descs(at, at, 1, node); } -static inline void init_copy_desc_masks(struct irq_desc *old_desc, - struct irq_desc *new_desc) +static inline int irq_alloc_desc_from(unsigned int from, int node) { + return irq_alloc_descs(-1, from, 1, node); } -static inline void free_desc_masks(struct irq_desc *old_desc, - struct irq_desc *new_desc) +static inline void irq_free_desc(unsigned int irq) { + irq_free_descs(irq, 1); } -#endif /* CONFIG_SMP */ + +#endif /* CONFIG_GENERIC_HARDIRQS */ + +#endif /* !CONFIG_S390 */ #endif /* _LINUX_IRQ_H */ diff --git a/include/linux/irq_work.h b/include/linux/irq_work.h new file mode 100644 index 000000000000..4fa09d4d0b71 --- /dev/null +++ b/include/linux/irq_work.h @@ -0,0 +1,20 @@ +#ifndef _LINUX_IRQ_WORK_H +#define _LINUX_IRQ_WORK_H + +struct irq_work { + struct irq_work *next; + void (*func)(struct irq_work *); +}; + +static inline +void init_irq_work(struct irq_work *entry, void (*func)(struct irq_work *)) +{ + entry->next = NULL; + entry->func = func; +} + +bool irq_work_queue(struct irq_work *entry); +void irq_work_run(void); +void irq_work_sync(struct irq_work *entry); + +#endif /* _LINUX_IRQ_WORK_H */ diff --git a/include/linux/irqdesc.h b/include/linux/irqdesc.h new file mode 100644 index 000000000000..979c68cc7458 --- /dev/null +++ b/include/linux/irqdesc.h @@ -0,0 +1,159 @@ +#ifndef _LINUX_IRQDESC_H +#define _LINUX_IRQDESC_H + +/* + * Core internal functions to deal with irq descriptors + * + * This include will move to kernel/irq once we cleaned up the tree. + * For now it's included from <linux/irq.h> + */ + +struct proc_dir_entry; +struct timer_rand_state; +/** + * struct irq_desc - interrupt descriptor + * @irq_data: per irq and chip data passed down to chip functions + * @timer_rand_state: pointer to timer rand state struct + * @kstat_irqs: irq stats per cpu + * @handle_irq: highlevel irq-events handler [if NULL, __do_IRQ()] + * @action: the irq action chain + * @status: status information + * @depth: disable-depth, for nested irq_disable() calls + * @wake_depth: enable depth, for multiple set_irq_wake() callers + * @irq_count: stats field to detect stalled irqs + * @last_unhandled: aging timer for unhandled count + * @irqs_unhandled: stats field for spurious unhandled interrupts + * @lock: locking for SMP + * @pending_mask: pending rebalanced interrupts + * @threads_active: number of irqaction threads currently running + * @wait_for_threads: wait queue for sync_irq to wait for threaded handlers + * @dir: /proc/irq/ procfs entry + * @name: flow handler name for /proc/interrupts output + */ +struct irq_desc { + +#ifdef CONFIG_GENERIC_HARDIRQS_NO_DEPRECATED + struct irq_data irq_data; +#else + /* + * This union will go away, once we fixed the direct access to + * irq_desc all over the place. The direct fields are a 1:1 + * overlay of irq_data. + */ + union { + struct irq_data irq_data; + struct { + unsigned int irq; + unsigned int node; + struct irq_chip *chip; + void *handler_data; + void *chip_data; + struct msi_desc *msi_desc; +#ifdef CONFIG_SMP + cpumask_var_t affinity; +#endif + }; + }; +#endif + + struct timer_rand_state *timer_rand_state; + unsigned int *kstat_irqs; + irq_flow_handler_t handle_irq; + struct irqaction *action; /* IRQ action list */ + unsigned int status; /* IRQ status */ + + unsigned int depth; /* nested irq disables */ + unsigned int wake_depth; /* nested wake enables */ + unsigned int irq_count; /* For detecting broken IRQs */ + unsigned long last_unhandled; /* Aging timer for unhandled count */ + unsigned int irqs_unhandled; + raw_spinlock_t lock; +#ifdef CONFIG_SMP + const struct cpumask *affinity_hint; +#ifdef CONFIG_GENERIC_PENDING_IRQ + cpumask_var_t pending_mask; +#endif +#endif + atomic_t threads_active; + wait_queue_head_t wait_for_threads; +#ifdef CONFIG_PROC_FS + struct proc_dir_entry *dir; +#endif + const char *name; +} ____cacheline_internodealigned_in_smp; + +#ifndef CONFIG_SPARSE_IRQ +extern struct irq_desc irq_desc[NR_IRQS]; +#endif + +/* Will be removed once the last users in power and sh are gone */ +extern struct irq_desc *irq_to_desc_alloc_node(unsigned int irq, int node); +static inline struct irq_desc *move_irq_desc(struct irq_desc *desc, int node) +{ + return desc; +} + +#ifdef CONFIG_GENERIC_HARDIRQS + +#define get_irq_desc_chip(desc) ((desc)->irq_data.chip) +#define get_irq_desc_chip_data(desc) ((desc)->irq_data.chip_data) +#define get_irq_desc_data(desc) ((desc)->irq_data.handler_data) +#define get_irq_desc_msi(desc) ((desc)->irq_data.msi_desc) + +/* + * Monolithic do_IRQ implementation. + */ +#ifndef CONFIG_GENERIC_HARDIRQS_NO__DO_IRQ +extern unsigned int __do_IRQ(unsigned int irq); +#endif + +/* + * Architectures call this to let the generic IRQ layer + * handle an interrupt. If the descriptor is attached to an + * irqchip-style controller then we call the ->handle_irq() handler, + * and it calls __do_IRQ() if it's attached to an irqtype-style controller. + */ +static inline void generic_handle_irq_desc(unsigned int irq, struct irq_desc *desc) +{ +#ifdef CONFIG_GENERIC_HARDIRQS_NO__DO_IRQ + desc->handle_irq(irq, desc); +#else + if (likely(desc->handle_irq)) + desc->handle_irq(irq, desc); + else + __do_IRQ(irq); +#endif +} + +static inline void generic_handle_irq(unsigned int irq) +{ + generic_handle_irq_desc(irq, irq_to_desc(irq)); +} + +/* Test to see if a driver has successfully requested an irq */ +static inline int irq_has_action(unsigned int irq) +{ + struct irq_desc *desc = irq_to_desc(irq); + return desc->action != NULL; +} + +static inline int irq_balancing_disabled(unsigned int irq) +{ + struct irq_desc *desc; + + desc = irq_to_desc(irq); + return desc->status & IRQ_NO_BALANCING_MASK; +} + +/* caller has locked the irq_desc and both params are valid */ +static inline void __set_irq_handler_unlocked(int irq, + irq_flow_handler_t handler) +{ + struct irq_desc *desc; + + desc = irq_to_desc(irq); + desc->handle_irq = handler; +} +#endif + +#endif diff --git a/include/linux/irqflags.h b/include/linux/irqflags.h index 006bf45eae30..d176d658fe25 100644 --- a/include/linux/irqflags.h +++ b/include/linux/irqflags.h @@ -12,6 +12,7 @@ #define _LINUX_TRACE_IRQFLAGS_H #include <linux/typecheck.h> +#include <asm/irqflags.h> #ifdef CONFIG_TRACE_IRQFLAGS extern void trace_softirqs_on(unsigned long ip); @@ -52,17 +53,45 @@ # define start_critical_timings() do { } while (0) #endif -#ifdef CONFIG_TRACE_IRQFLAGS_SUPPORT - -#include <asm/irqflags.h> +/* + * Wrap the arch provided IRQ routines to provide appropriate checks. + */ +#define raw_local_irq_disable() arch_local_irq_disable() +#define raw_local_irq_enable() arch_local_irq_enable() +#define raw_local_irq_save(flags) \ + do { \ + typecheck(unsigned long, flags); \ + flags = arch_local_irq_save(); \ + } while (0) +#define raw_local_irq_restore(flags) \ + do { \ + typecheck(unsigned long, flags); \ + arch_local_irq_restore(flags); \ + } while (0) +#define raw_local_save_flags(flags) \ + do { \ + typecheck(unsigned long, flags); \ + flags = arch_local_save_flags(); \ + } while (0) +#define raw_irqs_disabled_flags(flags) \ + ({ \ + typecheck(unsigned long, flags); \ + arch_irqs_disabled_flags(flags); \ + }) +#define raw_irqs_disabled() (arch_irqs_disabled()) +#define raw_safe_halt() arch_safe_halt() +/* + * The local_irq_*() APIs are equal to the raw_local_irq*() + * if !TRACE_IRQFLAGS. + */ +#ifdef CONFIG_TRACE_IRQFLAGS_SUPPORT #define local_irq_enable() \ do { trace_hardirqs_on(); raw_local_irq_enable(); } while (0) #define local_irq_disable() \ do { raw_local_irq_disable(); trace_hardirqs_off(); } while (0) #define local_irq_save(flags) \ do { \ - typecheck(unsigned long, flags); \ raw_local_irq_save(flags); \ trace_hardirqs_off(); \ } while (0) @@ -70,7 +99,6 @@ #define local_irq_restore(flags) \ do { \ - typecheck(unsigned long, flags); \ if (raw_irqs_disabled_flags(flags)) { \ raw_local_irq_restore(flags); \ trace_hardirqs_off(); \ @@ -79,51 +107,44 @@ raw_local_irq_restore(flags); \ } \ } while (0) -#else /* !CONFIG_TRACE_IRQFLAGS_SUPPORT */ -/* - * The local_irq_*() APIs are equal to the raw_local_irq*() - * if !TRACE_IRQFLAGS. - */ -# define raw_local_irq_disable() local_irq_disable() -# define raw_local_irq_enable() local_irq_enable() -# define raw_local_irq_save(flags) \ - do { \ - typecheck(unsigned long, flags); \ - local_irq_save(flags); \ - } while (0) -# define raw_local_irq_restore(flags) \ +#define local_save_flags(flags) \ do { \ - typecheck(unsigned long, flags); \ - local_irq_restore(flags); \ + raw_local_save_flags(flags); \ } while (0) -#endif /* CONFIG_TRACE_IRQFLAGS_SUPPORT */ -#ifdef CONFIG_TRACE_IRQFLAGS_SUPPORT -#define safe_halt() \ - do { \ - trace_hardirqs_on(); \ - raw_safe_halt(); \ - } while (0) +#define irqs_disabled_flags(flags) \ + ({ \ + raw_irqs_disabled_flags(flags); \ + }) -#define local_save_flags(flags) \ - do { \ - typecheck(unsigned long, flags); \ - raw_local_save_flags(flags); \ +#define irqs_disabled() \ + ({ \ + unsigned long _flags; \ + raw_local_save_flags(_flags); \ + raw_irqs_disabled_flags(_flags); \ + }) + +#define safe_halt() \ + do { \ + trace_hardirqs_on(); \ + raw_safe_halt(); \ } while (0) -#define irqs_disabled() \ -({ \ - unsigned long _flags; \ - \ - raw_local_save_flags(_flags); \ - raw_irqs_disabled_flags(_flags); \ -}) -#define irqs_disabled_flags(flags) \ -({ \ - typecheck(unsigned long, flags); \ - raw_irqs_disabled_flags(flags); \ -}) +#else /* !CONFIG_TRACE_IRQFLAGS_SUPPORT */ + +#define local_irq_enable() do { raw_local_irq_enable(); } while (0) +#define local_irq_disable() do { raw_local_irq_disable(); } while (0) +#define local_irq_save(flags) \ + do { \ + raw_local_irq_save(flags); \ + } while (0) +#define local_irq_restore(flags) do { raw_local_irq_restore(flags); } while (0) +#define local_save_flags(flags) do { raw_local_save_flags(flags); } while (0) +#define irqs_disabled() (raw_irqs_disabled()) +#define irqs_disabled_flags(flags) (raw_irqs_disabled_flags(flags)) +#define safe_halt() do { raw_safe_halt(); } while (0) + #endif /* CONFIG_TRACE_IRQFLAGS_SUPPORT */ #endif diff --git a/include/linux/irqnr.h b/include/linux/irqnr.h index 7bf89bc8cbca..05aa8c23483f 100644 --- a/include/linux/irqnr.h +++ b/include/linux/irqnr.h @@ -25,6 +25,7 @@ extern int nr_irqs; extern struct irq_desc *irq_to_desc(unsigned int irq); +unsigned int irq_get_next_irq(unsigned int offset); # define for_each_irq_desc(irq, desc) \ for (irq = 0, desc = irq_to_desc(irq); irq < nr_irqs; \ @@ -47,6 +48,10 @@ extern struct irq_desc *irq_to_desc(unsigned int irq); #define irq_node(irq) 0 #endif +# define for_each_active_irq(irq) \ + for (irq = irq_get_next_irq(0); irq < nr_irqs; \ + irq = irq_get_next_irq(irq + 1)) + #endif /* CONFIG_GENERIC_HARDIRQS */ #define for_each_irq_nr(irq) \ diff --git a/include/linux/jump_label.h b/include/linux/jump_label.h new file mode 100644 index 000000000000..b67cb180e6e9 --- /dev/null +++ b/include/linux/jump_label.h @@ -0,0 +1,74 @@ +#ifndef _LINUX_JUMP_LABEL_H +#define _LINUX_JUMP_LABEL_H + +#if defined(CC_HAVE_ASM_GOTO) && defined(CONFIG_HAVE_ARCH_JUMP_LABEL) +# include <asm/jump_label.h> +# define HAVE_JUMP_LABEL +#endif + +enum jump_label_type { + JUMP_LABEL_ENABLE, + JUMP_LABEL_DISABLE +}; + +struct module; + +#ifdef HAVE_JUMP_LABEL + +extern struct jump_entry __start___jump_table[]; +extern struct jump_entry __stop___jump_table[]; + +extern void arch_jump_label_transform(struct jump_entry *entry, + enum jump_label_type type); +extern void arch_jump_label_text_poke_early(jump_label_t addr); +extern void jump_label_update(unsigned long key, enum jump_label_type type); +extern void jump_label_apply_nops(struct module *mod); +extern int jump_label_text_reserved(void *start, void *end); + +#define jump_label_enable(key) \ + jump_label_update((unsigned long)key, JUMP_LABEL_ENABLE); + +#define jump_label_disable(key) \ + jump_label_update((unsigned long)key, JUMP_LABEL_DISABLE); + +#else + +#define JUMP_LABEL(key, label) \ +do { \ + if (unlikely(*key)) \ + goto label; \ +} while (0) + +#define jump_label_enable(cond_var) \ +do { \ + *(cond_var) = 1; \ +} while (0) + +#define jump_label_disable(cond_var) \ +do { \ + *(cond_var) = 0; \ +} while (0) + +static inline int jump_label_apply_nops(struct module *mod) +{ + return 0; +} + +static inline int jump_label_text_reserved(void *start, void *end) +{ + return 0; +} + +#endif + +#define COND_STMT(key, stmt) \ +do { \ + __label__ jl_enabled; \ + JUMP_LABEL(key, jl_enabled); \ + if (0) { \ +jl_enabled: \ + stmt; \ + } \ +} while (0) + +#endif diff --git a/include/linux/jump_label_ref.h b/include/linux/jump_label_ref.h new file mode 100644 index 000000000000..e5d012ad92c6 --- /dev/null +++ b/include/linux/jump_label_ref.h @@ -0,0 +1,44 @@ +#ifndef _LINUX_JUMP_LABEL_REF_H +#define _LINUX_JUMP_LABEL_REF_H + +#include <linux/jump_label.h> +#include <asm/atomic.h> + +#ifdef HAVE_JUMP_LABEL + +static inline void jump_label_inc(atomic_t *key) +{ + if (atomic_add_return(1, key) == 1) + jump_label_enable(key); +} + +static inline void jump_label_dec(atomic_t *key) +{ + if (atomic_dec_and_test(key)) + jump_label_disable(key); +} + +#else /* !HAVE_JUMP_LABEL */ + +static inline void jump_label_inc(atomic_t *key) +{ + atomic_inc(key); +} + +static inline void jump_label_dec(atomic_t *key) +{ + atomic_dec(key); +} + +#undef JUMP_LABEL +#define JUMP_LABEL(key, label) \ +do { \ + if (unlikely(__builtin_choose_expr( \ + __builtin_types_compatible_p(typeof(key), atomic_t *), \ + atomic_read((atomic_t *)(key)), *(key)))) \ + goto label; \ +} while (0) + +#endif /* HAVE_JUMP_LABEL */ + +#endif /* _LINUX_JUMP_LABEL_REF_H */ diff --git a/include/linux/kernel.h b/include/linux/kernel.h index 2b0a35e6bc69..1759ba5adce8 100644 --- a/include/linux/kernel.h +++ b/include/linux/kernel.h @@ -58,7 +58,18 @@ extern const char linux_proc_banner[]; #define FIELD_SIZEOF(t, f) (sizeof(((t*)0)->f)) #define DIV_ROUND_UP(n,d) (((n) + (d) - 1) / (d)) -#define roundup(x, y) ((((x) + ((y) - 1)) / (y)) * (y)) +#define roundup(x, y) ( \ +{ \ + typeof(y) __y = y; \ + (((x) + (__y - 1)) / __y) * __y; \ +} \ +) +#define rounddown(x, y) ( \ +{ \ + typeof(x) __x = (x); \ + __x - (__x % (y)); \ +} \ +) #define DIV_ROUND_CLOSEST(x, divisor)( \ { \ typeof(divisor) __divisor = divisor; \ diff --git a/include/linux/key.h b/include/linux/key.h index cd50dfa1d4c2..3db0adce1fda 100644 --- a/include/linux/key.h +++ b/include/linux/key.h @@ -178,8 +178,9 @@ struct key { */ union { unsigned long value; + void __rcu *rcudata; void *data; - struct keyring_list *subscriptions; + struct keyring_list __rcu *subscriptions; } payload; }; diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index c13cc48697aa..ac740b26eb10 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -205,7 +205,7 @@ struct kvm { struct mutex irq_lock; #ifdef CONFIG_HAVE_KVM_IRQCHIP - struct kvm_irq_routing_table *irq_routing; + struct kvm_irq_routing_table __rcu *irq_routing; struct hlist_head mask_notifier_list; struct hlist_head irq_ack_notifier_list; #endif diff --git a/include/linux/list.h b/include/linux/list.h index d167b5d7c0ac..88a000617d77 100644 --- a/include/linux/list.h +++ b/include/linux/list.h @@ -5,7 +5,6 @@ #include <linux/stddef.h> #include <linux/poison.h> #include <linux/prefetch.h> -#include <asm/system.h> /* * Simple doubly linked list implementation. diff --git a/include/linux/lockdep.h b/include/linux/lockdep.h index 06aed8305bf3..71c09b26c759 100644 --- a/include/linux/lockdep.h +++ b/include/linux/lockdep.h @@ -32,6 +32,17 @@ extern int lock_stat; #define MAX_LOCKDEP_SUBCLASSES 8UL /* + * NR_LOCKDEP_CACHING_CLASSES ... Number of classes + * cached in the instance of lockdep_map + * + * Currently main class (subclass == 0) and signle depth subclass + * are cached in lockdep_map. This optimization is mainly targeting + * on rq->lock. double_rq_lock() acquires this highly competitive with + * single depth. + */ +#define NR_LOCKDEP_CACHING_CLASSES 2 + +/* * Lock-classes are keyed via unique addresses, by embedding the * lockclass-key into the kernel (or module) .data section. (For * static locks we use the lock address itself as the key.) @@ -138,7 +149,7 @@ void clear_lock_stats(struct lock_class *class); */ struct lockdep_map { struct lock_class_key *key; - struct lock_class *class_cache; + struct lock_class *class_cache[NR_LOCKDEP_CACHING_CLASSES]; const char *name; #ifdef CONFIG_LOCK_STAT int cpu; @@ -424,14 +435,6 @@ do { \ #endif /* CONFIG_LOCKDEP */ -#ifdef CONFIG_GENERIC_HARDIRQS -extern void early_init_irq_lock_class(void); -#else -static inline void early_init_irq_lock_class(void) -{ -} -#endif - #ifdef CONFIG_TRACE_IRQFLAGS extern void early_boot_irqs_off(void); extern void early_boot_irqs_on(void); diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h index ee7e258627f9..cb57d657ce4d 100644 --- a/include/linux/mm_types.h +++ b/include/linux/mm_types.h @@ -299,7 +299,7 @@ struct mm_struct { * new_owner->mm == mm * new_owner->alloc_lock is held */ - struct task_struct *owner; + struct task_struct __rcu *owner; #endif #ifdef CONFIG_PROC_FS diff --git a/include/linux/module.h b/include/linux/module.h index aace066bad8f..b29e7458b966 100644 --- a/include/linux/module.h +++ b/include/linux/module.h @@ -350,7 +350,10 @@ struct module struct tracepoint *tracepoints; unsigned int num_tracepoints; #endif - +#ifdef HAVE_JUMP_LABEL + struct jump_entry *jump_entries; + unsigned int num_jump_entries; +#endif #ifdef CONFIG_TRACING const char **trace_bprintk_fmt_start; unsigned int num_trace_bprintk_fmt; diff --git a/include/linux/msi.h b/include/linux/msi.h index 91b05c171854..05acced439a3 100644 --- a/include/linux/msi.h +++ b/include/linux/msi.h @@ -10,12 +10,13 @@ struct msi_msg { }; /* Helper functions */ -struct irq_desc; -extern void mask_msi_irq(unsigned int irq); -extern void unmask_msi_irq(unsigned int irq); -extern void read_msi_msg_desc(struct irq_desc *desc, struct msi_msg *msg); -extern void get_cached_msi_msg_desc(struct irq_desc *desc, struct msi_msg *msg); -extern void write_msi_msg_desc(struct irq_desc *desc, struct msi_msg *msg); +struct irq_data; +struct msi_desc; +extern void mask_msi_irq(struct irq_data *data); +extern void unmask_msi_irq(struct irq_data *data); +extern void __read_msi_msg(struct msi_desc *entry, struct msi_msg *msg); +extern void __get_cached_msi_msg(struct msi_desc *entry, struct msi_msg *msg); +extern void __write_msi_msg(struct msi_desc *entry, struct msi_msg *msg); extern void read_msi_msg(unsigned int irq, struct msi_msg *msg); extern void get_cached_msi_msg(unsigned int irq, struct msi_msg *msg); extern void write_msi_msg(unsigned int irq, struct msi_msg *msg); diff --git a/include/linux/netfilter/nfnetlink_conntrack.h b/include/linux/netfilter/nfnetlink_conntrack.h index 9ed534c991b9..70cd0603911c 100644 --- a/include/linux/netfilter/nfnetlink_conntrack.h +++ b/include/linux/netfilter/nfnetlink_conntrack.h @@ -39,8 +39,9 @@ enum ctattr_type { CTA_TUPLE_MASTER, CTA_NAT_SEQ_ADJ_ORIG, CTA_NAT_SEQ_ADJ_REPLY, - CTA_SECMARK, + CTA_SECMARK, /* obsolete */ CTA_ZONE, + CTA_SECCTX, __CTA_MAX }; #define CTA_MAX (__CTA_MAX - 1) @@ -172,4 +173,11 @@ enum ctattr_help { }; #define CTA_HELP_MAX (__CTA_HELP_MAX - 1) +enum ctattr_secctx { + CTA_SECCTX_UNSPEC, + CTA_SECCTX_NAME, + __CTA_SECCTX_MAX +}; +#define CTA_SECCTX_MAX (__CTA_SECCTX_MAX - 1) + #endif /* _IPCONNTRACK_NETLINK_H */ diff --git a/include/linux/netfilter/xt_SECMARK.h b/include/linux/netfilter/xt_SECMARK.h index 6fcd3448b186..989092bd6274 100644 --- a/include/linux/netfilter/xt_SECMARK.h +++ b/include/linux/netfilter/xt_SECMARK.h @@ -11,18 +11,12 @@ * packets are being marked for. */ #define SECMARK_MODE_SEL 0x01 /* SELinux */ -#define SECMARK_SELCTX_MAX 256 - -struct xt_secmark_target_selinux_info { - __u32 selsid; - char selctx[SECMARK_SELCTX_MAX]; -}; +#define SECMARK_SECCTX_MAX 256 struct xt_secmark_target_info { __u8 mode; - union { - struct xt_secmark_target_selinux_info sel; - } u; + __u32 secid; + char secctx[SECMARK_SECCTX_MAX]; }; #endif /*_XT_SECMARK_H_target */ diff --git a/include/linux/nfs_fs.h b/include/linux/nfs_fs.h index 508f8cf6da37..d0edf7d823ae 100644 --- a/include/linux/nfs_fs.h +++ b/include/linux/nfs_fs.h @@ -185,7 +185,7 @@ struct nfs_inode { struct nfs4_cached_acl *nfs4_acl; /* NFSv4 state */ struct list_head open_states; - struct nfs_delegation *delegation; + struct nfs_delegation __rcu *delegation; fmode_t delegation_state; struct rw_semaphore rwsem; #endif /* CONFIG_NFS_V4*/ diff --git a/include/linux/notifier.h b/include/linux/notifier.h index b2f1a4d83550..2026f9e1ceb8 100644 --- a/include/linux/notifier.h +++ b/include/linux/notifier.h @@ -49,28 +49,28 @@ struct notifier_block { int (*notifier_call)(struct notifier_block *, unsigned long, void *); - struct notifier_block *next; + struct notifier_block __rcu *next; int priority; }; struct atomic_notifier_head { spinlock_t lock; - struct notifier_block *head; + struct notifier_block __rcu *head; }; struct blocking_notifier_head { struct rw_semaphore rwsem; - struct notifier_block *head; + struct notifier_block __rcu *head; }; struct raw_notifier_head { - struct notifier_block *head; + struct notifier_block __rcu *head; }; struct srcu_notifier_head { struct mutex mutex; struct srcu_struct srcu; - struct notifier_block *head; + struct notifier_block __rcu *head; }; #define ATOMIC_INIT_NOTIFIER_HEAD(name) do { \ diff --git a/include/linux/opp.h b/include/linux/opp.h new file mode 100644 index 000000000000..5449945d589f --- /dev/null +++ b/include/linux/opp.h @@ -0,0 +1,105 @@ +/* + * Generic OPP Interface + * + * Copyright (C) 2009-2010 Texas Instruments Incorporated. + * Nishanth Menon + * Romit Dasgupta + * Kevin Hilman + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#ifndef __LINUX_OPP_H__ +#define __LINUX_OPP_H__ + +#include <linux/err.h> +#include <linux/cpufreq.h> + +struct opp; + +#if defined(CONFIG_PM_OPP) + +unsigned long opp_get_voltage(struct opp *opp); + +unsigned long opp_get_freq(struct opp *opp); + +int opp_get_opp_count(struct device *dev); + +struct opp *opp_find_freq_exact(struct device *dev, unsigned long freq, + bool available); + +struct opp *opp_find_freq_floor(struct device *dev, unsigned long *freq); + +struct opp *opp_find_freq_ceil(struct device *dev, unsigned long *freq); + +int opp_add(struct device *dev, unsigned long freq, unsigned long u_volt); + +int opp_enable(struct device *dev, unsigned long freq); + +int opp_disable(struct device *dev, unsigned long freq); + +#else +static inline unsigned long opp_get_voltage(struct opp *opp) +{ + return 0; +} + +static inline unsigned long opp_get_freq(struct opp *opp) +{ + return 0; +} + +static inline int opp_get_opp_count(struct device *dev) +{ + return 0; +} + +static inline struct opp *opp_find_freq_exact(struct device *dev, + unsigned long freq, bool available) +{ + return ERR_PTR(-EINVAL); +} + +static inline struct opp *opp_find_freq_floor(struct device *dev, + unsigned long *freq) +{ + return ERR_PTR(-EINVAL); +} + +static inline struct opp *opp_find_freq_ceil(struct device *dev, + unsigned long *freq) +{ + return ERR_PTR(-EINVAL); +} + +static inline int opp_add(struct device *dev, unsigned long freq, + unsigned long u_volt) +{ + return -EINVAL; +} + +static inline int opp_enable(struct device *dev, unsigned long freq) +{ + return 0; +} + +static inline int opp_disable(struct device *dev, unsigned long freq) +{ + return 0; +} +#endif /* CONFIG_PM */ + +#if defined(CONFIG_CPU_FREQ) && defined(CONFIG_PM_OPP) +int opp_init_cpufreq_table(struct device *dev, + struct cpufreq_frequency_table **table); +#else +static inline int opp_init_cpufreq_table(struct device *dev, + struct cpufreq_frequency_table **table) +{ + return -EINVAL; +} +#endif /* CONFIG_CPU_FREQ */ + +#endif /* __LINUX_OPP_H__ */ diff --git a/include/linux/oprofile.h b/include/linux/oprofile.h index 5171639ecf0f..32fb81212fd1 100644 --- a/include/linux/oprofile.h +++ b/include/linux/oprofile.h @@ -15,6 +15,7 @@ #include <linux/types.h> #include <linux/spinlock.h> +#include <linux/init.h> #include <asm/atomic.h> /* Each escaped entry is prefixed by ESCAPE_CODE @@ -185,4 +186,10 @@ int oprofile_add_data(struct op_entry *entry, unsigned long val); int oprofile_add_data64(struct op_entry *entry, u64 val); int oprofile_write_commit(struct op_entry *entry); +#ifdef CONFIG_PERF_EVENTS +int __init oprofile_perf_init(struct oprofile_operations *ops); +void oprofile_perf_exit(void); +char *op_name_from_perf_id(void); +#endif /* CONFIG_PERF_EVENTS */ + #endif /* OPROFILE_H */ diff --git a/include/linux/pci_ids.h b/include/linux/pci_ids.h index 570fddeb0388..2615c37c8fe5 100644 --- a/include/linux/pci_ids.h +++ b/include/linux/pci_ids.h @@ -517,6 +517,7 @@ #define PCI_DEVICE_ID_AMD_11H_NB_DRAM 0x1302 #define PCI_DEVICE_ID_AMD_11H_NB_MISC 0x1303 #define PCI_DEVICE_ID_AMD_11H_NB_LINK 0x1304 +#define PCI_DEVICE_ID_AMD_15H_NB_MISC 0x1603 #define PCI_DEVICE_ID_AMD_LANCE 0x2000 #define PCI_DEVICE_ID_AMD_LANCE_HOME 0x2001 #define PCI_DEVICE_ID_AMD_SCSI 0x2020 diff --git a/include/linux/percpu-defs.h b/include/linux/percpu-defs.h index ce2dc655cd1d..27ef6b190ea6 100644 --- a/include/linux/percpu-defs.h +++ b/include/linux/percpu-defs.h @@ -139,6 +139,15 @@ __aligned(PAGE_SIZE) /* + * Declaration/definition used for per-CPU variables that must be read mostly. + */ +#define DECLARE_PER_CPU_READ_MOSTLY(type, name) \ + DECLARE_PER_CPU_SECTION(type, name, "..readmostly") + +#define DEFINE_PER_CPU_READ_MOSTLY(type, name) \ + DEFINE_PER_CPU_SECTION(type, name, "..readmostly") + +/* * Intermodule exports for per-CPU variables. sparse forgets about * address space across EXPORT_SYMBOL(), change EXPORT_SYMBOL() to * noop if __CHECKER__. diff --git a/include/linux/percpu.h b/include/linux/percpu.h index 49466b13c5c6..0eb50832aa00 100644 --- a/include/linux/percpu.h +++ b/include/linux/percpu.h @@ -39,6 +39,15 @@ preempt_enable(); \ } while (0) +#define get_cpu_ptr(var) ({ \ + preempt_disable(); \ + this_cpu_ptr(var); }) + +#define put_cpu_ptr(var) do { \ + (void)(var); \ + preempt_enable(); \ +} while (0) + #ifdef CONFIG_SMP /* minimum unit size, also is the maximum supported allocation size */ diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h index 716f99b682c1..057bf22a8323 100644 --- a/include/linux/perf_event.h +++ b/include/linux/perf_event.h @@ -486,6 +486,8 @@ struct perf_guest_info_callbacks { #include <linux/workqueue.h> #include <linux/ftrace.h> #include <linux/cpu.h> +#include <linux/irq_work.h> +#include <linux/jump_label_ref.h> #include <asm/atomic.h> #include <asm/local.h> @@ -529,16 +531,22 @@ struct hw_perf_event { int last_cpu; }; struct { /* software */ - s64 remaining; struct hrtimer hrtimer; }; #ifdef CONFIG_HAVE_HW_BREAKPOINT struct { /* breakpoint */ struct arch_hw_breakpoint info; struct list_head bp_list; + /* + * Crufty hack to avoid the chicken and egg + * problem hw_breakpoint has with context + * creation and event initalization. + */ + struct task_struct *bp_target; }; #endif }; + int state; local64_t prev_count; u64 sample_period; u64 last_period; @@ -550,6 +558,13 @@ struct hw_perf_event { #endif }; +/* + * hw_perf_event::state flags + */ +#define PERF_HES_STOPPED 0x01 /* the counter is stopped */ +#define PERF_HES_UPTODATE 0x02 /* event->count up-to-date */ +#define PERF_HES_ARCH 0x04 + struct perf_event; /* @@ -561,36 +576,70 @@ struct perf_event; * struct pmu - generic performance monitoring unit */ struct pmu { - int (*enable) (struct perf_event *event); - void (*disable) (struct perf_event *event); - int (*start) (struct perf_event *event); - void (*stop) (struct perf_event *event); - void (*read) (struct perf_event *event); - void (*unthrottle) (struct perf_event *event); + struct list_head entry; + + int * __percpu pmu_disable_count; + struct perf_cpu_context * __percpu pmu_cpu_context; + int task_ctx_nr; + + /* + * Fully disable/enable this PMU, can be used to protect from the PMI + * as well as for lazy/batch writing of the MSRs. + */ + void (*pmu_enable) (struct pmu *pmu); /* optional */ + void (*pmu_disable) (struct pmu *pmu); /* optional */ /* - * Group events scheduling is treated as a transaction, add group - * events as a whole and perform one schedulability test. If the test - * fails, roll back the whole group + * Try and initialize the event for this PMU. + * Should return -ENOENT when the @event doesn't match this PMU. */ + int (*event_init) (struct perf_event *event); + +#define PERF_EF_START 0x01 /* start the counter when adding */ +#define PERF_EF_RELOAD 0x02 /* reload the counter when starting */ +#define PERF_EF_UPDATE 0x04 /* update the counter when stopping */ /* - * Start the transaction, after this ->enable() doesn't need - * to do schedulability tests. + * Adds/Removes a counter to/from the PMU, can be done inside + * a transaction, see the ->*_txn() methods. */ - void (*start_txn) (const struct pmu *pmu); + int (*add) (struct perf_event *event, int flags); + void (*del) (struct perf_event *event, int flags); + /* - * If ->start_txn() disabled the ->enable() schedulability test + * Starts/Stops a counter present on the PMU. The PMI handler + * should stop the counter when perf_event_overflow() returns + * !0. ->start() will be used to continue. + */ + void (*start) (struct perf_event *event, int flags); + void (*stop) (struct perf_event *event, int flags); + + /* + * Updates the counter value of the event. + */ + void (*read) (struct perf_event *event); + + /* + * Group events scheduling is treated as a transaction, add + * group events as a whole and perform one schedulability test. + * If the test fails, roll back the whole group + * + * Start the transaction, after this ->add() doesn't need to + * do schedulability tests. + */ + void (*start_txn) (struct pmu *pmu); /* optional */ + /* + * If ->start_txn() disabled the ->add() schedulability test * then ->commit_txn() is required to perform one. On success * the transaction is closed. On error the transaction is kept * open until ->cancel_txn() is called. */ - int (*commit_txn) (const struct pmu *pmu); + int (*commit_txn) (struct pmu *pmu); /* optional */ /* - * Will cancel the transaction, assumes ->disable() is called for - * each successfull ->enable() during the transaction. + * Will cancel the transaction, assumes ->del() is called + * for each successfull ->add() during the transaction. */ - void (*cancel_txn) (const struct pmu *pmu); + void (*cancel_txn) (struct pmu *pmu); /* optional */ }; /** @@ -631,11 +680,6 @@ struct perf_buffer { void *data_pages[0]; }; -struct perf_pending_entry { - struct perf_pending_entry *next; - void (*func)(struct perf_pending_entry *); -}; - struct perf_sample_data; typedef void (*perf_overflow_handler_t)(struct perf_event *, int, @@ -656,6 +700,7 @@ struct swevent_hlist { #define PERF_ATTACH_CONTEXT 0x01 #define PERF_ATTACH_GROUP 0x02 +#define PERF_ATTACH_TASK 0x04 /** * struct perf_event - performance event kernel representation: @@ -669,7 +714,7 @@ struct perf_event { int nr_siblings; int group_flags; struct perf_event *group_leader; - const struct pmu *pmu; + struct pmu *pmu; enum perf_event_active_state state; unsigned int attach_state; @@ -743,7 +788,7 @@ struct perf_event { int pending_wakeup; int pending_kill; int pending_disable; - struct perf_pending_entry pending; + struct irq_work pending; atomic_t event_limit; @@ -763,12 +808,19 @@ struct perf_event { #endif /* CONFIG_PERF_EVENTS */ }; +enum perf_event_context_type { + task_context, + cpu_context, +}; + /** * struct perf_event_context - event context structure * * Used as a container for task events and CPU events as well: */ struct perf_event_context { + enum perf_event_context_type type; + struct pmu *pmu; /* * Protect the states of the events in the list, * nr_active, and the list: @@ -808,6 +860,12 @@ struct perf_event_context { struct rcu_head rcu_head; }; +/* + * Number of contexts where an event can trigger: + * task, softirq, hardirq, nmi. + */ +#define PERF_NR_CONTEXTS 4 + /** * struct perf_event_cpu_context - per cpu event context structure */ @@ -815,18 +873,9 @@ struct perf_cpu_context { struct perf_event_context ctx; struct perf_event_context *task_ctx; int active_oncpu; - int max_pertask; int exclusive; - struct swevent_hlist *swevent_hlist; - struct mutex hlist_mutex; - int hlist_refcount; - - /* - * Recursion avoidance: - * - * task, softirq, irq, nmi context - */ - int recursion[4]; + struct list_head rotation_list; + int jiffies_interval; }; struct perf_output_handle { @@ -842,26 +891,34 @@ struct perf_output_handle { #ifdef CONFIG_PERF_EVENTS -/* - * Set by architecture code: - */ -extern int perf_max_events; +extern int perf_pmu_register(struct pmu *pmu); +extern void perf_pmu_unregister(struct pmu *pmu); + +extern int perf_num_counters(void); +extern const char *perf_pmu_name(void); +extern void __perf_event_task_sched_in(struct task_struct *task); +extern void __perf_event_task_sched_out(struct task_struct *task, struct task_struct *next); -extern const struct pmu *hw_perf_event_init(struct perf_event *event); +extern atomic_t perf_task_events; + +static inline void perf_event_task_sched_in(struct task_struct *task) +{ + COND_STMT(&perf_task_events, __perf_event_task_sched_in(task)); +} + +static inline +void perf_event_task_sched_out(struct task_struct *task, struct task_struct *next) +{ + COND_STMT(&perf_task_events, __perf_event_task_sched_out(task, next)); +} -extern void perf_event_task_sched_in(struct task_struct *task); -extern void perf_event_task_sched_out(struct task_struct *task, struct task_struct *next); -extern void perf_event_task_tick(struct task_struct *task); extern int perf_event_init_task(struct task_struct *child); extern void perf_event_exit_task(struct task_struct *child); extern void perf_event_free_task(struct task_struct *task); -extern void set_perf_event_pending(void); -extern void perf_event_do_pending(void); +extern void perf_event_delayed_put(struct task_struct *task); extern void perf_event_print_debug(void); -extern void __perf_disable(void); -extern bool __perf_enable(void); -extern void perf_disable(void); -extern void perf_enable(void); +extern void perf_pmu_disable(struct pmu *pmu); +extern void perf_pmu_enable(struct pmu *pmu); extern int perf_event_task_disable(void); extern int perf_event_task_enable(void); extern void perf_event_update_userpage(struct perf_event *event); @@ -869,7 +926,7 @@ extern int perf_event_release_kernel(struct perf_event *event); extern struct perf_event * perf_event_create_kernel_counter(struct perf_event_attr *attr, int cpu, - pid_t pid, + struct task_struct *task, perf_overflow_handler_t callback); extern u64 perf_event_read_value(struct perf_event *event, u64 *enabled, u64 *running); @@ -920,14 +977,7 @@ extern int perf_event_overflow(struct perf_event *event, int nmi, */ static inline int is_software_event(struct perf_event *event) { - switch (event->attr.type) { - case PERF_TYPE_SOFTWARE: - case PERF_TYPE_TRACEPOINT: - /* for now the breakpoint stuff also works as software event */ - case PERF_TYPE_BREAKPOINT: - return 1; - } - return 0; + return event->pmu->task_ctx_nr == perf_sw_context; } extern atomic_t perf_swevent_enabled[PERF_COUNT_SW_MAX]; @@ -954,18 +1004,20 @@ static inline void perf_fetch_caller_regs(struct pt_regs *regs) perf_arch_fetch_caller_regs(regs, CALLER_ADDR0); } -static inline void +static __always_inline void perf_sw_event(u32 event_id, u64 nr, int nmi, struct pt_regs *regs, u64 addr) { - if (atomic_read(&perf_swevent_enabled[event_id])) { - struct pt_regs hot_regs; - - if (!regs) { - perf_fetch_caller_regs(&hot_regs); - regs = &hot_regs; - } - __perf_sw_event(event_id, nr, nmi, regs, addr); + struct pt_regs hot_regs; + + JUMP_LABEL(&perf_swevent_enabled[event_id], have_event); + return; + +have_event: + if (!regs) { + perf_fetch_caller_regs(&hot_regs); + regs = &hot_regs; } + __perf_sw_event(event_id, nr, nmi, regs, addr); } extern void perf_event_mmap(struct vm_area_struct *vma); @@ -976,7 +1028,21 @@ extern int perf_unregister_guest_info_callbacks(struct perf_guest_info_callbacks extern void perf_event_comm(struct task_struct *tsk); extern void perf_event_fork(struct task_struct *tsk); -extern struct perf_callchain_entry *perf_callchain(struct pt_regs *regs); +/* Callchains */ +DECLARE_PER_CPU(struct perf_callchain_entry, perf_callchain_entry); + +extern void perf_callchain_user(struct perf_callchain_entry *entry, + struct pt_regs *regs); +extern void perf_callchain_kernel(struct perf_callchain_entry *entry, + struct pt_regs *regs); + + +static inline void +perf_callchain_store(struct perf_callchain_entry *entry, u64 ip) +{ + if (entry->nr < PERF_MAX_STACK_DEPTH) + entry->ip[entry->nr++] = ip; +} extern int sysctl_perf_event_paranoid; extern int sysctl_perf_event_mlock; @@ -1019,21 +1085,18 @@ extern int perf_swevent_get_recursion_context(void); extern void perf_swevent_put_recursion_context(int rctx); extern void perf_event_enable(struct perf_event *event); extern void perf_event_disable(struct perf_event *event); +extern void perf_event_task_tick(void); #else static inline void perf_event_task_sched_in(struct task_struct *task) { } static inline void perf_event_task_sched_out(struct task_struct *task, struct task_struct *next) { } -static inline void -perf_event_task_tick(struct task_struct *task) { } static inline int perf_event_init_task(struct task_struct *child) { return 0; } static inline void perf_event_exit_task(struct task_struct *child) { } static inline void perf_event_free_task(struct task_struct *task) { } -static inline void perf_event_do_pending(void) { } +static inline void perf_event_delayed_put(struct task_struct *task) { } static inline void perf_event_print_debug(void) { } -static inline void perf_disable(void) { } -static inline void perf_enable(void) { } static inline int perf_event_task_disable(void) { return -EINVAL; } static inline int perf_event_task_enable(void) { return -EINVAL; } @@ -1056,6 +1119,7 @@ static inline int perf_swevent_get_recursion_context(void) { return -1; } static inline void perf_swevent_put_recursion_context(int rctx) { } static inline void perf_event_enable(struct perf_event *event) { } static inline void perf_event_disable(struct perf_event *event) { } +static inline void perf_event_task_tick(void) { } #endif #define perf_output_put(handle, x) \ diff --git a/include/linux/pm.h b/include/linux/pm.h index 52e8c55ff314..40f3f45702ba 100644 --- a/include/linux/pm.h +++ b/include/linux/pm.h @@ -41,6 +41,12 @@ extern void (*pm_power_off_prepare)(void); struct device; +#ifdef CONFIG_PM +extern const char power_group_name[]; /* = "power" */ +#else +#define power_group_name NULL +#endif + typedef struct pm_message { int event; } pm_message_t; @@ -438,6 +444,9 @@ enum rpm_status { * * RPM_REQ_SUSPEND Run the device bus type's ->runtime_suspend() callback * + * RPM_REQ_AUTOSUSPEND Same as RPM_REQ_SUSPEND, but not until the device has + * been inactive for as long as power.autosuspend_delay + * * RPM_REQ_RESUME Run the device bus type's ->runtime_resume() callback */ @@ -445,26 +454,28 @@ enum rpm_request { RPM_REQ_NONE = 0, RPM_REQ_IDLE, RPM_REQ_SUSPEND, + RPM_REQ_AUTOSUSPEND, RPM_REQ_RESUME, }; +struct wakeup_source; + struct dev_pm_info { pm_message_t power_state; unsigned int can_wakeup:1; - unsigned int should_wakeup:1; unsigned async_suspend:1; enum dpm_state status; /* Owned by the PM core */ + spinlock_t lock; #ifdef CONFIG_PM_SLEEP struct list_head entry; struct completion completion; - unsigned long wakeup_count; + struct wakeup_source *wakeup; #endif #ifdef CONFIG_PM_RUNTIME struct timer_list suspend_timer; unsigned long timer_expires; struct work_struct work; wait_queue_head_t wait_queue; - spinlock_t lock; atomic_t usage_count; atomic_t child_count; unsigned int disable_depth:3; @@ -474,9 +485,14 @@ struct dev_pm_info { unsigned int deferred_resume:1; unsigned int run_wake:1; unsigned int runtime_auto:1; + unsigned int no_callbacks:1; + unsigned int use_autosuspend:1; + unsigned int timer_autosuspends:1; enum rpm_request request; enum rpm_status runtime_status; int runtime_error; + int autosuspend_delay; + unsigned long last_busy; unsigned long active_jiffies; unsigned long suspended_jiffies; unsigned long accounting_timestamp; @@ -558,12 +574,7 @@ extern void __suspend_report_result(const char *function, void *fn, int ret); __suspend_report_result(__func__, fn, ret); \ } while (0) -extern void device_pm_wait_for_dev(struct device *sub, struct device *dev); - -/* drivers/base/power/wakeup.c */ -extern void pm_wakeup_event(struct device *dev, unsigned int msec); -extern void pm_stay_awake(struct device *dev); -extern void pm_relax(void); +extern int device_pm_wait_for_dev(struct device *sub, struct device *dev); #else /* !CONFIG_PM_SLEEP */ #define device_pm_lock() do {} while (0) @@ -576,11 +587,10 @@ static inline int dpm_suspend_start(pm_message_t state) #define suspend_report_result(fn, ret) do {} while (0) -static inline void device_pm_wait_for_dev(struct device *a, struct device *b) {} - -static inline void pm_wakeup_event(struct device *dev, unsigned int msec) {} -static inline void pm_stay_awake(struct device *dev) {} -static inline void pm_relax(void) {} +static inline int device_pm_wait_for_dev(struct device *a, struct device *b) +{ + return 0; +} #endif /* !CONFIG_PM_SLEEP */ /* How to reorder dpm_list after device_move() */ diff --git a/include/linux/pm_runtime.h b/include/linux/pm_runtime.h index 6e81888c6222..3ec2358f8692 100644 --- a/include/linux/pm_runtime.h +++ b/include/linux/pm_runtime.h @@ -12,18 +12,24 @@ #include <linux/device.h> #include <linux/pm.h> +#include <linux/jiffies.h> + +/* Runtime PM flag argument bits */ +#define RPM_ASYNC 0x01 /* Request is asynchronous */ +#define RPM_NOWAIT 0x02 /* Don't wait for concurrent + state change */ +#define RPM_GET_PUT 0x04 /* Increment/decrement the + usage_count */ +#define RPM_AUTO 0x08 /* Use autosuspend_delay */ + #ifdef CONFIG_PM_RUNTIME extern struct workqueue_struct *pm_wq; -extern int pm_runtime_idle(struct device *dev); -extern int pm_runtime_suspend(struct device *dev); -extern int pm_runtime_resume(struct device *dev); -extern int pm_request_idle(struct device *dev); +extern int __pm_runtime_idle(struct device *dev, int rpmflags); +extern int __pm_runtime_suspend(struct device *dev, int rpmflags); +extern int __pm_runtime_resume(struct device *dev, int rpmflags); extern int pm_schedule_suspend(struct device *dev, unsigned int delay); -extern int pm_request_resume(struct device *dev); -extern int __pm_runtime_get(struct device *dev, bool sync); -extern int __pm_runtime_put(struct device *dev, bool sync); extern int __pm_runtime_set_status(struct device *dev, unsigned int status); extern int pm_runtime_barrier(struct device *dev); extern void pm_runtime_enable(struct device *dev); @@ -33,6 +39,10 @@ extern void pm_runtime_forbid(struct device *dev); extern int pm_generic_runtime_idle(struct device *dev); extern int pm_generic_runtime_suspend(struct device *dev); extern int pm_generic_runtime_resume(struct device *dev); +extern void pm_runtime_no_callbacks(struct device *dev); +extern void __pm_runtime_use_autosuspend(struct device *dev, bool use); +extern void pm_runtime_set_autosuspend_delay(struct device *dev, int delay); +extern unsigned long pm_runtime_autosuspend_expiration(struct device *dev); static inline bool pm_children_suspended(struct device *dev) { @@ -70,19 +80,29 @@ static inline bool pm_runtime_suspended(struct device *dev) return dev->power.runtime_status == RPM_SUSPENDED; } +static inline void pm_runtime_mark_last_busy(struct device *dev) +{ + ACCESS_ONCE(dev->power.last_busy) = jiffies; +} + #else /* !CONFIG_PM_RUNTIME */ -static inline int pm_runtime_idle(struct device *dev) { return -ENOSYS; } -static inline int pm_runtime_suspend(struct device *dev) { return -ENOSYS; } -static inline int pm_runtime_resume(struct device *dev) { return 0; } -static inline int pm_request_idle(struct device *dev) { return -ENOSYS; } +static inline int __pm_runtime_idle(struct device *dev, int rpmflags) +{ + return -ENOSYS; +} +static inline int __pm_runtime_suspend(struct device *dev, int rpmflags) +{ + return -ENOSYS; +} +static inline int __pm_runtime_resume(struct device *dev, int rpmflags) +{ + return 1; +} static inline int pm_schedule_suspend(struct device *dev, unsigned int delay) { return -ENOSYS; } -static inline int pm_request_resume(struct device *dev) { return 0; } -static inline int __pm_runtime_get(struct device *dev, bool sync) { return 1; } -static inline int __pm_runtime_put(struct device *dev, bool sync) { return 0; } static inline int __pm_runtime_set_status(struct device *dev, unsigned int status) { return 0; } static inline int pm_runtime_barrier(struct device *dev) { return 0; } @@ -102,27 +122,82 @@ static inline bool pm_runtime_suspended(struct device *dev) { return false; } static inline int pm_generic_runtime_idle(struct device *dev) { return 0; } static inline int pm_generic_runtime_suspend(struct device *dev) { return 0; } static inline int pm_generic_runtime_resume(struct device *dev) { return 0; } +static inline void pm_runtime_no_callbacks(struct device *dev) {} + +static inline void pm_runtime_mark_last_busy(struct device *dev) {} +static inline void __pm_runtime_use_autosuspend(struct device *dev, + bool use) {} +static inline void pm_runtime_set_autosuspend_delay(struct device *dev, + int delay) {} +static inline unsigned long pm_runtime_autosuspend_expiration( + struct device *dev) { return 0; } #endif /* !CONFIG_PM_RUNTIME */ +static inline int pm_runtime_idle(struct device *dev) +{ + return __pm_runtime_idle(dev, 0); +} + +static inline int pm_runtime_suspend(struct device *dev) +{ + return __pm_runtime_suspend(dev, 0); +} + +static inline int pm_runtime_autosuspend(struct device *dev) +{ + return __pm_runtime_suspend(dev, RPM_AUTO); +} + +static inline int pm_runtime_resume(struct device *dev) +{ + return __pm_runtime_resume(dev, 0); +} + +static inline int pm_request_idle(struct device *dev) +{ + return __pm_runtime_idle(dev, RPM_ASYNC); +} + +static inline int pm_request_resume(struct device *dev) +{ + return __pm_runtime_resume(dev, RPM_ASYNC); +} + +static inline int pm_request_autosuspend(struct device *dev) +{ + return __pm_runtime_suspend(dev, RPM_ASYNC | RPM_AUTO); +} + static inline int pm_runtime_get(struct device *dev) { - return __pm_runtime_get(dev, false); + return __pm_runtime_resume(dev, RPM_GET_PUT | RPM_ASYNC); } static inline int pm_runtime_get_sync(struct device *dev) { - return __pm_runtime_get(dev, true); + return __pm_runtime_resume(dev, RPM_GET_PUT); } static inline int pm_runtime_put(struct device *dev) { - return __pm_runtime_put(dev, false); + return __pm_runtime_idle(dev, RPM_GET_PUT | RPM_ASYNC); +} + +static inline int pm_runtime_put_autosuspend(struct device *dev) +{ + return __pm_runtime_suspend(dev, + RPM_GET_PUT | RPM_ASYNC | RPM_AUTO); } static inline int pm_runtime_put_sync(struct device *dev) { - return __pm_runtime_put(dev, true); + return __pm_runtime_idle(dev, RPM_GET_PUT); +} + +static inline int pm_runtime_put_sync_autosuspend(struct device *dev) +{ + return __pm_runtime_suspend(dev, RPM_GET_PUT | RPM_AUTO); } static inline int pm_runtime_set_active(struct device *dev) @@ -140,4 +215,14 @@ static inline void pm_runtime_disable(struct device *dev) __pm_runtime_disable(dev, true); } +static inline void pm_runtime_use_autosuspend(struct device *dev) +{ + __pm_runtime_use_autosuspend(dev, true); +} + +static inline void pm_runtime_dont_use_autosuspend(struct device *dev) +{ + __pm_runtime_use_autosuspend(dev, false); +} + #endif diff --git a/include/linux/pm_wakeup.h b/include/linux/pm_wakeup.h index 76aca48722ae..9cff00dd6b63 100644 --- a/include/linux/pm_wakeup.h +++ b/include/linux/pm_wakeup.h @@ -2,6 +2,7 @@ * pm_wakeup.h - Power management wakeup interface * * Copyright (C) 2008 Alan Stern + * Copyright (C) 2010 Rafael J. Wysocki, Novell Inc. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by @@ -27,19 +28,77 @@ #include <linux/types.h> -#ifdef CONFIG_PM - -/* Changes to device_may_wakeup take effect on the next pm state change. +/** + * struct wakeup_source - Representation of wakeup sources * - * By default, most devices should leave wakeup disabled. The exceptions - * are devices that everyone expects to be wakeup sources: keyboards, - * power buttons, possibly network interfaces, etc. + * @total_time: Total time this wakeup source has been active. + * @max_time: Maximum time this wakeup source has been continuously active. + * @last_time: Monotonic clock when the wakeup source's was activated last time. + * @event_count: Number of signaled wakeup events. + * @active_count: Number of times the wakeup sorce was activated. + * @relax_count: Number of times the wakeup sorce was deactivated. + * @hit_count: Number of times the wakeup sorce might abort system suspend. + * @active: Status of the wakeup source. */ -static inline void device_init_wakeup(struct device *dev, bool val) +struct wakeup_source { + char *name; + struct list_head entry; + spinlock_t lock; + struct timer_list timer; + unsigned long timer_expires; + ktime_t total_time; + ktime_t max_time; + ktime_t last_time; + unsigned long event_count; + unsigned long active_count; + unsigned long relax_count; + unsigned long hit_count; + unsigned int active:1; +}; + +#ifdef CONFIG_PM_SLEEP + +/* + * Changes to device_may_wakeup take effect on the next pm state change. + */ + +static inline void device_set_wakeup_capable(struct device *dev, bool capable) +{ + dev->power.can_wakeup = capable; +} + +static inline bool device_can_wakeup(struct device *dev) +{ + return dev->power.can_wakeup; +} + + + +static inline bool device_may_wakeup(struct device *dev) { - dev->power.can_wakeup = dev->power.should_wakeup = val; + return dev->power.can_wakeup && !!dev->power.wakeup; } +/* drivers/base/power/wakeup.c */ +extern struct wakeup_source *wakeup_source_create(const char *name); +extern void wakeup_source_destroy(struct wakeup_source *ws); +extern void wakeup_source_add(struct wakeup_source *ws); +extern void wakeup_source_remove(struct wakeup_source *ws); +extern struct wakeup_source *wakeup_source_register(const char *name); +extern void wakeup_source_unregister(struct wakeup_source *ws); +extern int device_wakeup_enable(struct device *dev); +extern int device_wakeup_disable(struct device *dev); +extern int device_init_wakeup(struct device *dev, bool val); +extern int device_set_wakeup_enable(struct device *dev, bool enable); +extern void __pm_stay_awake(struct wakeup_source *ws); +extern void pm_stay_awake(struct device *dev); +extern void __pm_relax(struct wakeup_source *ws); +extern void pm_relax(struct device *dev); +extern void __pm_wakeup_event(struct wakeup_source *ws, unsigned int msec); +extern void pm_wakeup_event(struct device *dev, unsigned int msec); + +#else /* !CONFIG_PM_SLEEP */ + static inline void device_set_wakeup_capable(struct device *dev, bool capable) { dev->power.can_wakeup = capable; @@ -50,43 +109,63 @@ static inline bool device_can_wakeup(struct device *dev) return dev->power.can_wakeup; } -static inline void device_set_wakeup_enable(struct device *dev, bool enable) +static inline bool device_may_wakeup(struct device *dev) { - dev->power.should_wakeup = enable; + return false; } -static inline bool device_may_wakeup(struct device *dev) +static inline struct wakeup_source *wakeup_source_create(const char *name) { - return dev->power.can_wakeup && dev->power.should_wakeup; + return NULL; } -#else /* !CONFIG_PM */ +static inline void wakeup_source_destroy(struct wakeup_source *ws) {} + +static inline void wakeup_source_add(struct wakeup_source *ws) {} -/* For some reason the following routines work even without CONFIG_PM */ -static inline void device_init_wakeup(struct device *dev, bool val) +static inline void wakeup_source_remove(struct wakeup_source *ws) {} + +static inline struct wakeup_source *wakeup_source_register(const char *name) { - dev->power.can_wakeup = val; + return NULL; } -static inline void device_set_wakeup_capable(struct device *dev, bool capable) +static inline void wakeup_source_unregister(struct wakeup_source *ws) {} + +static inline int device_wakeup_enable(struct device *dev) { - dev->power.can_wakeup = capable; + return -EINVAL; } -static inline bool device_can_wakeup(struct device *dev) +static inline int device_wakeup_disable(struct device *dev) { - return dev->power.can_wakeup; + return 0; } -static inline void device_set_wakeup_enable(struct device *dev, bool enable) +static inline int device_init_wakeup(struct device *dev, bool val) { + dev->power.can_wakeup = val; + return val ? -EINVAL : 0; } -static inline bool device_may_wakeup(struct device *dev) + +static inline int device_set_wakeup_enable(struct device *dev, bool enable) { - return false; + return -EINVAL; } -#endif /* !CONFIG_PM */ +static inline void __pm_stay_awake(struct wakeup_source *ws) {} + +static inline void pm_stay_awake(struct device *dev) {} + +static inline void __pm_relax(struct wakeup_source *ws) {} + +static inline void pm_relax(struct device *dev) {} + +static inline void __pm_wakeup_event(struct wakeup_source *ws, unsigned int msec) {} + +static inline void pm_wakeup_event(struct device *dev, unsigned int msec) {} + +#endif /* !CONFIG_PM_SLEEP */ #endif /* _LINUX_PM_WAKEUP_H */ diff --git a/include/linux/radix-tree.h b/include/linux/radix-tree.h index 634b8e674ac5..a39cbed9ee17 100644 --- a/include/linux/radix-tree.h +++ b/include/linux/radix-tree.h @@ -47,6 +47,8 @@ static inline void *radix_tree_indirect_to_ptr(void *ptr) { return (void *)((unsigned long)ptr & ~RADIX_TREE_INDIRECT_PTR); } +#define radix_tree_indirect_to_ptr(ptr) \ + radix_tree_indirect_to_ptr((void __force *)(ptr)) static inline int radix_tree_is_indirect_ptr(void *ptr) { @@ -61,7 +63,7 @@ static inline int radix_tree_is_indirect_ptr(void *ptr) struct radix_tree_root { unsigned int height; gfp_t gfp_mask; - struct radix_tree_node *rnode; + struct radix_tree_node __rcu *rnode; }; #define RADIX_TREE_INIT(mask) { \ diff --git a/include/linux/rculist.h b/include/linux/rculist.h index 4ec3b38ce9c5..f31ef61f1c65 100644 --- a/include/linux/rculist.h +++ b/include/linux/rculist.h @@ -10,6 +10,21 @@ #include <linux/rcupdate.h> /* + * Why is there no list_empty_rcu()? Because list_empty() serves this + * purpose. The list_empty() function fetches the RCU-protected pointer + * and compares it to the address of the list head, but neither dereferences + * this pointer itself nor provides this pointer to the caller. Therefore, + * it is not necessary to use rcu_dereference(), so that list_empty() can + * be used anywhere you would want to use a list_empty_rcu(). + */ + +/* + * return the ->next pointer of a list_head in an rcu safe + * way, we must not access it directly + */ +#define list_next_rcu(list) (*((struct list_head __rcu **)(&(list)->next))) + +/* * Insert a new entry between two known consecutive entries. * * This is only for internal list manipulation where we know @@ -20,7 +35,7 @@ static inline void __list_add_rcu(struct list_head *new, { new->next = next; new->prev = prev; - rcu_assign_pointer(prev->next, new); + rcu_assign_pointer(list_next_rcu(prev), new); next->prev = new; } @@ -138,7 +153,7 @@ static inline void list_replace_rcu(struct list_head *old, { new->next = old->next; new->prev = old->prev; - rcu_assign_pointer(new->prev->next, new); + rcu_assign_pointer(list_next_rcu(new->prev), new); new->next->prev = new; old->prev = LIST_POISON2; } @@ -193,7 +208,7 @@ static inline void list_splice_init_rcu(struct list_head *list, */ last->next = at; - rcu_assign_pointer(head->next, first); + rcu_assign_pointer(list_next_rcu(head), first); first->prev = head; at->prev = last; } @@ -208,7 +223,9 @@ static inline void list_splice_init_rcu(struct list_head *list, * primitives such as list_add_rcu() as long as it's guarded by rcu_read_lock(). */ #define list_entry_rcu(ptr, type, member) \ - container_of(rcu_dereference_raw(ptr), type, member) + ({typeof (*ptr) __rcu *__ptr = (typeof (*ptr) __rcu __force *)ptr; \ + container_of((typeof(ptr))rcu_dereference_raw(__ptr), type, member); \ + }) /** * list_first_entry_rcu - get the first element from a list @@ -225,9 +242,9 @@ static inline void list_splice_init_rcu(struct list_head *list, list_entry_rcu((ptr)->next, type, member) #define __list_for_each_rcu(pos, head) \ - for (pos = rcu_dereference_raw((head)->next); \ + for (pos = rcu_dereference_raw(list_next_rcu(head)); \ pos != (head); \ - pos = rcu_dereference_raw(pos->next)) + pos = rcu_dereference_raw(list_next_rcu((pos))) /** * list_for_each_entry_rcu - iterate over rcu list of given type @@ -257,9 +274,9 @@ static inline void list_splice_init_rcu(struct list_head *list, * as long as the traversal is guarded by rcu_read_lock(). */ #define list_for_each_continue_rcu(pos, head) \ - for ((pos) = rcu_dereference_raw((pos)->next); \ + for ((pos) = rcu_dereference_raw(list_next_rcu(pos)); \ prefetch((pos)->next), (pos) != (head); \ - (pos) = rcu_dereference_raw((pos)->next)) + (pos) = rcu_dereference_raw(list_next_rcu(pos))) /** * list_for_each_entry_continue_rcu - continue iteration over list of given type @@ -314,12 +331,19 @@ static inline void hlist_replace_rcu(struct hlist_node *old, new->next = next; new->pprev = old->pprev; - rcu_assign_pointer(*new->pprev, new); + rcu_assign_pointer(*(struct hlist_node __rcu **)new->pprev, new); if (next) new->next->pprev = &new->next; old->pprev = LIST_POISON2; } +/* + * return the first or the next element in an RCU protected hlist + */ +#define hlist_first_rcu(head) (*((struct hlist_node __rcu **)(&(head)->first))) +#define hlist_next_rcu(node) (*((struct hlist_node __rcu **)(&(node)->next))) +#define hlist_pprev_rcu(node) (*((struct hlist_node __rcu **)((node)->pprev))) + /** * hlist_add_head_rcu * @n: the element to add to the hash list. @@ -346,7 +370,7 @@ static inline void hlist_add_head_rcu(struct hlist_node *n, n->next = first; n->pprev = &h->first; - rcu_assign_pointer(h->first, n); + rcu_assign_pointer(hlist_first_rcu(h), n); if (first) first->pprev = &n->next; } @@ -374,7 +398,7 @@ static inline void hlist_add_before_rcu(struct hlist_node *n, { n->pprev = next->pprev; n->next = next; - rcu_assign_pointer(*(n->pprev), n); + rcu_assign_pointer(hlist_pprev_rcu(n), n); next->pprev = &n->next; } @@ -401,15 +425,15 @@ static inline void hlist_add_after_rcu(struct hlist_node *prev, { n->next = prev->next; n->pprev = &prev->next; - rcu_assign_pointer(prev->next, n); + rcu_assign_pointer(hlist_next_rcu(prev), n); if (n->next) n->next->pprev = &n->next; } -#define __hlist_for_each_rcu(pos, head) \ - for (pos = rcu_dereference((head)->first); \ - pos && ({ prefetch(pos->next); 1; }); \ - pos = rcu_dereference(pos->next)) +#define __hlist_for_each_rcu(pos, head) \ + for (pos = rcu_dereference(hlist_first_rcu(head)); \ + pos && ({ prefetch(pos->next); 1; }); \ + pos = rcu_dereference(hlist_next_rcu(pos))) /** * hlist_for_each_entry_rcu - iterate over rcu list of given type @@ -422,11 +446,11 @@ static inline void hlist_add_after_rcu(struct hlist_node *prev, * the _rcu list-mutation primitives such as hlist_add_head_rcu() * as long as the traversal is guarded by rcu_read_lock(). */ -#define hlist_for_each_entry_rcu(tpos, pos, head, member) \ - for (pos = rcu_dereference_raw((head)->first); \ +#define hlist_for_each_entry_rcu(tpos, pos, head, member) \ + for (pos = rcu_dereference_raw(hlist_first_rcu(head)); \ pos && ({ prefetch(pos->next); 1; }) && \ ({ tpos = hlist_entry(pos, typeof(*tpos), member); 1; }); \ - pos = rcu_dereference_raw(pos->next)) + pos = rcu_dereference_raw(hlist_next_rcu(pos))) /** * hlist_for_each_entry_rcu_bh - iterate over rcu list of given type diff --git a/include/linux/rculist_nulls.h b/include/linux/rculist_nulls.h index b70ffe53cb9f..2ae13714828b 100644 --- a/include/linux/rculist_nulls.h +++ b/include/linux/rculist_nulls.h @@ -37,6 +37,12 @@ static inline void hlist_nulls_del_init_rcu(struct hlist_nulls_node *n) } } +#define hlist_nulls_first_rcu(head) \ + (*((struct hlist_nulls_node __rcu __force **)&(head)->first)) + +#define hlist_nulls_next_rcu(node) \ + (*((struct hlist_nulls_node __rcu __force **)&(node)->next)) + /** * hlist_nulls_del_rcu - deletes entry from hash list without re-initialization * @n: the element to delete from the hash list. @@ -88,7 +94,7 @@ static inline void hlist_nulls_add_head_rcu(struct hlist_nulls_node *n, n->next = first; n->pprev = &h->first; - rcu_assign_pointer(h->first, n); + rcu_assign_pointer(hlist_nulls_first_rcu(h), n); if (!is_a_nulls(first)) first->pprev = &n->next; } @@ -100,11 +106,11 @@ static inline void hlist_nulls_add_head_rcu(struct hlist_nulls_node *n, * @member: the name of the hlist_nulls_node within the struct. * */ -#define hlist_nulls_for_each_entry_rcu(tpos, pos, head, member) \ - for (pos = rcu_dereference_raw((head)->first); \ - (!is_a_nulls(pos)) && \ +#define hlist_nulls_for_each_entry_rcu(tpos, pos, head, member) \ + for (pos = rcu_dereference_raw(hlist_nulls_first_rcu(head)); \ + (!is_a_nulls(pos)) && \ ({ tpos = hlist_nulls_entry(pos, typeof(*tpos), member); 1; }); \ - pos = rcu_dereference_raw(pos->next)) + pos = rcu_dereference_raw(hlist_nulls_next_rcu(pos))) #endif #endif diff --git a/include/linux/rcupdate.h b/include/linux/rcupdate.h index 83af1f8d8b74..03cda7bed985 100644 --- a/include/linux/rcupdate.h +++ b/include/linux/rcupdate.h @@ -41,11 +41,15 @@ #include <linux/lockdep.h> #include <linux/completion.h> #include <linux/debugobjects.h> +#include <linux/compiler.h> #ifdef CONFIG_RCU_TORTURE_TEST extern int rcutorture_runnable; /* for sysctl */ #endif /* #ifdef CONFIG_RCU_TORTURE_TEST */ +#define ULONG_CMP_GE(a, b) (ULONG_MAX / 2 >= (a) - (b)) +#define ULONG_CMP_LT(a, b) (ULONG_MAX / 2 < (a) - (b)) + /** * struct rcu_head - callback structure for use with RCU * @next: next update requests in a list @@ -57,29 +61,94 @@ struct rcu_head { }; /* Exported common interfaces */ -extern void rcu_barrier(void); +extern void call_rcu_sched(struct rcu_head *head, + void (*func)(struct rcu_head *rcu)); +extern void synchronize_sched(void); extern void rcu_barrier_bh(void); extern void rcu_barrier_sched(void); extern void synchronize_sched_expedited(void); extern int sched_expedited_torture_stats(char *page); +static inline void __rcu_read_lock_bh(void) +{ + local_bh_disable(); +} + +static inline void __rcu_read_unlock_bh(void) +{ + local_bh_enable(); +} + +#ifdef CONFIG_PREEMPT_RCU + +extern void __rcu_read_lock(void); +extern void __rcu_read_unlock(void); +void synchronize_rcu(void); + +/* + * Defined as a macro as it is a very low level header included from + * areas that don't even know about current. This gives the rcu_read_lock() + * nesting depth, but makes sense only if CONFIG_PREEMPT_RCU -- in other + * types of kernel builds, the rcu_read_lock() nesting depth is unknowable. + */ +#define rcu_preempt_depth() (current->rcu_read_lock_nesting) + +#else /* #ifdef CONFIG_PREEMPT_RCU */ + +static inline void __rcu_read_lock(void) +{ + preempt_disable(); +} + +static inline void __rcu_read_unlock(void) +{ + preempt_enable(); +} + +static inline void synchronize_rcu(void) +{ + synchronize_sched(); +} + +static inline int rcu_preempt_depth(void) +{ + return 0; +} + +#endif /* #else #ifdef CONFIG_PREEMPT_RCU */ + /* Internal to kernel */ extern void rcu_init(void); +extern void rcu_sched_qs(int cpu); +extern void rcu_bh_qs(int cpu); +extern void rcu_check_callbacks(int cpu, int user); +struct notifier_block; + +#ifdef CONFIG_NO_HZ + +extern void rcu_enter_nohz(void); +extern void rcu_exit_nohz(void); + +#else /* #ifdef CONFIG_NO_HZ */ + +static inline void rcu_enter_nohz(void) +{ +} + +static inline void rcu_exit_nohz(void) +{ +} + +#endif /* #else #ifdef CONFIG_NO_HZ */ #if defined(CONFIG_TREE_RCU) || defined(CONFIG_TREE_PREEMPT_RCU) #include <linux/rcutree.h> -#elif defined(CONFIG_TINY_RCU) +#elif defined(CONFIG_TINY_RCU) || defined(CONFIG_TINY_PREEMPT_RCU) #include <linux/rcutiny.h> #else #error "Unknown RCU implementation specified to kernel configuration" #endif -#define RCU_HEAD_INIT { .next = NULL, .func = NULL } -#define RCU_HEAD(head) struct rcu_head head = RCU_HEAD_INIT -#define INIT_RCU_HEAD(ptr) do { \ - (ptr)->next = NULL; (ptr)->func = NULL; \ -} while (0) - /* * init_rcu_head_on_stack()/destroy_rcu_head_on_stack() are needed for dynamic * initialization and destruction of rcu_head on the stack. rcu_head structures @@ -120,14 +189,15 @@ extern struct lockdep_map rcu_sched_lock_map; extern int debug_lockdep_rcu_enabled(void); /** - * rcu_read_lock_held - might we be in RCU read-side critical section? + * rcu_read_lock_held() - might we be in RCU read-side critical section? * * If CONFIG_DEBUG_LOCK_ALLOC is selected, returns nonzero iff in an RCU * read-side critical section. In absence of CONFIG_DEBUG_LOCK_ALLOC, * this assumes we are in an RCU read-side critical section unless it can - * prove otherwise. + * prove otherwise. This is useful for debug checks in functions that + * require that they be called within an RCU read-side critical section. * - * Check debug_lockdep_rcu_enabled() to prevent false positives during boot + * Checks debug_lockdep_rcu_enabled() to prevent false positives during boot * and while lockdep is disabled. */ static inline int rcu_read_lock_held(void) @@ -144,14 +214,16 @@ static inline int rcu_read_lock_held(void) extern int rcu_read_lock_bh_held(void); /** - * rcu_read_lock_sched_held - might we be in RCU-sched read-side critical section? + * rcu_read_lock_sched_held() - might we be in RCU-sched read-side critical section? * * If CONFIG_DEBUG_LOCK_ALLOC is selected, returns nonzero iff in an * RCU-sched read-side critical section. In absence of * CONFIG_DEBUG_LOCK_ALLOC, this assumes we are in an RCU-sched read-side * critical section unless it can prove otherwise. Note that disabling * of preemption (including disabling irqs) counts as an RCU-sched - * read-side critical section. + * read-side critical section. This is useful for debug checks in functions + * that required that they be called within an RCU-sched read-side + * critical section. * * Check debug_lockdep_rcu_enabled() to prevent false positives during boot * and while lockdep is disabled. @@ -211,7 +283,11 @@ static inline int rcu_read_lock_sched_held(void) extern int rcu_my_thread_group_empty(void); -#define __do_rcu_dereference_check(c) \ +/** + * rcu_lockdep_assert - emit lockdep splat if specified condition not met + * @c: condition to check + */ +#define rcu_lockdep_assert(c) \ do { \ static bool __warned; \ if (debug_lockdep_rcu_enabled() && !__warned && !(c)) { \ @@ -220,41 +296,163 @@ extern int rcu_my_thread_group_empty(void); } \ } while (0) +#else /* #ifdef CONFIG_PROVE_RCU */ + +#define rcu_lockdep_assert(c) do { } while (0) + +#endif /* #else #ifdef CONFIG_PROVE_RCU */ + +/* + * Helper functions for rcu_dereference_check(), rcu_dereference_protected() + * and rcu_assign_pointer(). Some of these could be folded into their + * callers, but they are left separate in order to ease introduction of + * multiple flavors of pointers to match the multiple flavors of RCU + * (e.g., __rcu_bh, * __rcu_sched, and __srcu), should this make sense in + * the future. + */ + +#ifdef __CHECKER__ +#define rcu_dereference_sparse(p, space) \ + ((void)(((typeof(*p) space *)p) == p)) +#else /* #ifdef __CHECKER__ */ +#define rcu_dereference_sparse(p, space) +#endif /* #else #ifdef __CHECKER__ */ + +#define __rcu_access_pointer(p, space) \ + ({ \ + typeof(*p) *_________p1 = (typeof(*p)*__force )ACCESS_ONCE(p); \ + rcu_dereference_sparse(p, space); \ + ((typeof(*p) __force __kernel *)(_________p1)); \ + }) +#define __rcu_dereference_check(p, c, space) \ + ({ \ + typeof(*p) *_________p1 = (typeof(*p)*__force )ACCESS_ONCE(p); \ + rcu_lockdep_assert(c); \ + rcu_dereference_sparse(p, space); \ + smp_read_barrier_depends(); \ + ((typeof(*p) __force __kernel *)(_________p1)); \ + }) +#define __rcu_dereference_protected(p, c, space) \ + ({ \ + rcu_lockdep_assert(c); \ + rcu_dereference_sparse(p, space); \ + ((typeof(*p) __force __kernel *)(p)); \ + }) + +#define __rcu_dereference_index_check(p, c) \ + ({ \ + typeof(p) _________p1 = ACCESS_ONCE(p); \ + rcu_lockdep_assert(c); \ + smp_read_barrier_depends(); \ + (_________p1); \ + }) +#define __rcu_assign_pointer(p, v, space) \ + ({ \ + if (!__builtin_constant_p(v) || \ + ((v) != NULL)) \ + smp_wmb(); \ + (p) = (typeof(*v) __force space *)(v); \ + }) + + +/** + * rcu_access_pointer() - fetch RCU pointer with no dereferencing + * @p: The pointer to read + * + * Return the value of the specified RCU-protected pointer, but omit the + * smp_read_barrier_depends() and keep the ACCESS_ONCE(). This is useful + * when the value of this pointer is accessed, but the pointer is not + * dereferenced, for example, when testing an RCU-protected pointer against + * NULL. Although rcu_access_pointer() may also be used in cases where + * update-side locks prevent the value of the pointer from changing, you + * should instead use rcu_dereference_protected() for this use case. + */ +#define rcu_access_pointer(p) __rcu_access_pointer((p), __rcu) + /** - * rcu_dereference_check - rcu_dereference with debug checking + * rcu_dereference_check() - rcu_dereference with debug checking * @p: The pointer to read, prior to dereferencing * @c: The conditions under which the dereference will take place * * Do an rcu_dereference(), but check that the conditions under which the - * dereference will take place are correct. Typically the conditions indicate - * the various locking conditions that should be held at that point. The check - * should return true if the conditions are satisfied. + * dereference will take place are correct. Typically the conditions + * indicate the various locking conditions that should be held at that + * point. The check should return true if the conditions are satisfied. + * An implicit check for being in an RCU read-side critical section + * (rcu_read_lock()) is included. * * For example: * - * bar = rcu_dereference_check(foo->bar, rcu_read_lock_held() || - * lockdep_is_held(&foo->lock)); + * bar = rcu_dereference_check(foo->bar, lockdep_is_held(&foo->lock)); * * could be used to indicate to lockdep that foo->bar may only be dereferenced - * if either the RCU read lock is held, or that the lock required to replace + * if either rcu_read_lock() is held, or that the lock required to replace * the bar struct at foo->bar is held. * * Note that the list of conditions may also include indications of when a lock * need not be held, for example during initialisation or destruction of the * target struct: * - * bar = rcu_dereference_check(foo->bar, rcu_read_lock_held() || - * lockdep_is_held(&foo->lock) || + * bar = rcu_dereference_check(foo->bar, lockdep_is_held(&foo->lock) || * atomic_read(&foo->usage) == 0); + * + * Inserts memory barriers on architectures that require them + * (currently only the Alpha), prevents the compiler from refetching + * (and from merging fetches), and, more importantly, documents exactly + * which pointers are protected by RCU and checks that the pointer is + * annotated as __rcu. */ #define rcu_dereference_check(p, c) \ - ({ \ - __do_rcu_dereference_check(c); \ - rcu_dereference_raw(p); \ - }) + __rcu_dereference_check((p), rcu_read_lock_held() || (c), __rcu) + +/** + * rcu_dereference_bh_check() - rcu_dereference_bh with debug checking + * @p: The pointer to read, prior to dereferencing + * @c: The conditions under which the dereference will take place + * + * This is the RCU-bh counterpart to rcu_dereference_check(). + */ +#define rcu_dereference_bh_check(p, c) \ + __rcu_dereference_check((p), rcu_read_lock_bh_held() || (c), __rcu) /** - * rcu_dereference_protected - fetch RCU pointer when updates prevented + * rcu_dereference_sched_check() - rcu_dereference_sched with debug checking + * @p: The pointer to read, prior to dereferencing + * @c: The conditions under which the dereference will take place + * + * This is the RCU-sched counterpart to rcu_dereference_check(). + */ +#define rcu_dereference_sched_check(p, c) \ + __rcu_dereference_check((p), rcu_read_lock_sched_held() || (c), \ + __rcu) + +#define rcu_dereference_raw(p) rcu_dereference_check(p, 1) /*@@@ needed? @@@*/ + +/** + * rcu_dereference_index_check() - rcu_dereference for indices with debug checking + * @p: The pointer to read, prior to dereferencing + * @c: The conditions under which the dereference will take place + * + * Similar to rcu_dereference_check(), but omits the sparse checking. + * This allows rcu_dereference_index_check() to be used on integers, + * which can then be used as array indices. Attempting to use + * rcu_dereference_check() on an integer will give compiler warnings + * because the sparse address-space mechanism relies on dereferencing + * the RCU-protected pointer. Dereferencing integers is not something + * that even gcc will put up with. + * + * Note that this function does not implicitly check for RCU read-side + * critical sections. If this function gains lots of uses, it might + * make sense to provide versions for each flavor of RCU, but it does + * not make sense as of early 2010. + */ +#define rcu_dereference_index_check(p, c) \ + __rcu_dereference_index_check((p), (c)) + +/** + * rcu_dereference_protected() - fetch RCU pointer when updates prevented + * @p: The pointer to read, prior to dereferencing + * @c: The conditions under which the dereference will take place * * Return the value of the specified RCU-protected pointer, but omit * both the smp_read_barrier_depends() and the ACCESS_ONCE(). This @@ -263,35 +461,61 @@ extern int rcu_my_thread_group_empty(void); * prevent the compiler from repeating this reference or combining it * with other references, so it should not be used without protection * of appropriate locks. + * + * This function is only for update-side use. Using this function + * when protected only by rcu_read_lock() will result in infrequent + * but very ugly failures. */ #define rcu_dereference_protected(p, c) \ - ({ \ - __do_rcu_dereference_check(c); \ - (p); \ - }) + __rcu_dereference_protected((p), (c), __rcu) -#else /* #ifdef CONFIG_PROVE_RCU */ +/** + * rcu_dereference_bh_protected() - fetch RCU-bh pointer when updates prevented + * @p: The pointer to read, prior to dereferencing + * @c: The conditions under which the dereference will take place + * + * This is the RCU-bh counterpart to rcu_dereference_protected(). + */ +#define rcu_dereference_bh_protected(p, c) \ + __rcu_dereference_protected((p), (c), __rcu) -#define rcu_dereference_check(p, c) rcu_dereference_raw(p) -#define rcu_dereference_protected(p, c) (p) +/** + * rcu_dereference_sched_protected() - fetch RCU-sched pointer when updates prevented + * @p: The pointer to read, prior to dereferencing + * @c: The conditions under which the dereference will take place + * + * This is the RCU-sched counterpart to rcu_dereference_protected(). + */ +#define rcu_dereference_sched_protected(p, c) \ + __rcu_dereference_protected((p), (c), __rcu) -#endif /* #else #ifdef CONFIG_PROVE_RCU */ /** - * rcu_access_pointer - fetch RCU pointer with no dereferencing + * rcu_dereference() - fetch RCU-protected pointer for dereferencing + * @p: The pointer to read, prior to dereferencing * - * Return the value of the specified RCU-protected pointer, but omit the - * smp_read_barrier_depends() and keep the ACCESS_ONCE(). This is useful - * when the value of this pointer is accessed, but the pointer is not - * dereferenced, for example, when testing an RCU-protected pointer against - * NULL. This may also be used in cases where update-side locks prevent - * the value of the pointer from changing, but rcu_dereference_protected() - * is a lighter-weight primitive for this use case. + * This is a simple wrapper around rcu_dereference_check(). + */ +#define rcu_dereference(p) rcu_dereference_check(p, 0) + +/** + * rcu_dereference_bh() - fetch an RCU-bh-protected pointer for dereferencing + * @p: The pointer to read, prior to dereferencing + * + * Makes rcu_dereference_check() do the dirty work. + */ +#define rcu_dereference_bh(p) rcu_dereference_bh_check(p, 0) + +/** + * rcu_dereference_sched() - fetch RCU-sched-protected pointer for dereferencing + * @p: The pointer to read, prior to dereferencing + * + * Makes rcu_dereference_check() do the dirty work. */ -#define rcu_access_pointer(p) ACCESS_ONCE(p) +#define rcu_dereference_sched(p) rcu_dereference_sched_check(p, 0) /** - * rcu_read_lock - mark the beginning of an RCU read-side critical section. + * rcu_read_lock() - mark the beginning of an RCU read-side critical section * * When synchronize_rcu() is invoked on one CPU while other CPUs * are within RCU read-side critical sections, then the @@ -302,7 +526,7 @@ extern int rcu_my_thread_group_empty(void); * until after the all the other CPUs exit their critical sections. * * Note, however, that RCU callbacks are permitted to run concurrently - * with RCU read-side critical sections. One way that this can happen + * with new RCU read-side critical sections. One way that this can happen * is via the following sequence of events: (1) CPU 0 enters an RCU * read-side critical section, (2) CPU 1 invokes call_rcu() to register * an RCU callback, (3) CPU 0 exits the RCU read-side critical section, @@ -317,7 +541,20 @@ extern int rcu_my_thread_group_empty(void); * will be deferred until the outermost RCU read-side critical section * completes. * - * It is illegal to block while in an RCU read-side critical section. + * You can avoid reading and understanding the next paragraph by + * following this rule: don't put anything in an rcu_read_lock() RCU + * read-side critical section that would block in a !PREEMPT kernel. + * But if you want the full story, read on! + * + * In non-preemptible RCU implementations (TREE_RCU and TINY_RCU), it + * is illegal to block while in an RCU read-side critical section. In + * preemptible RCU implementations (TREE_PREEMPT_RCU and TINY_PREEMPT_RCU) + * in CONFIG_PREEMPT kernel builds, RCU read-side critical sections may + * be preempted, but explicit blocking is illegal. Finally, in preemptible + * RCU implementations in real-time (CONFIG_PREEMPT_RT) kernel builds, + * RCU read-side critical sections may be preempted and they may also + * block, but only when acquiring spinlocks that are subject to priority + * inheritance. */ static inline void rcu_read_lock(void) { @@ -337,7 +574,7 @@ static inline void rcu_read_lock(void) */ /** - * rcu_read_unlock - marks the end of an RCU read-side critical section. + * rcu_read_unlock() - marks the end of an RCU read-side critical section. * * See rcu_read_lock() for more information. */ @@ -349,15 +586,16 @@ static inline void rcu_read_unlock(void) } /** - * rcu_read_lock_bh - mark the beginning of a softirq-only RCU critical section + * rcu_read_lock_bh() - mark the beginning of an RCU-bh critical section * * This is equivalent of rcu_read_lock(), but to be used when updates - * are being done using call_rcu_bh(). Since call_rcu_bh() callbacks - * consider completion of a softirq handler to be a quiescent state, - * a process in RCU read-side critical section must be protected by - * disabling softirqs. Read-side critical sections in interrupt context - * can use just rcu_read_lock(). - * + * are being done using call_rcu_bh() or synchronize_rcu_bh(). Since + * both call_rcu_bh() and synchronize_rcu_bh() consider completion of a + * softirq handler to be a quiescent state, a process in RCU read-side + * critical section must be protected by disabling softirqs. Read-side + * critical sections in interrupt context can use just rcu_read_lock(), + * though this should at least be commented to avoid confusing people + * reading the code. */ static inline void rcu_read_lock_bh(void) { @@ -379,13 +617,12 @@ static inline void rcu_read_unlock_bh(void) } /** - * rcu_read_lock_sched - mark the beginning of a RCU-classic critical section + * rcu_read_lock_sched() - mark the beginning of a RCU-sched critical section * - * Should be used with either - * - synchronize_sched() - * or - * - call_rcu_sched() and rcu_barrier_sched() - * on the write-side to insure proper synchronization. + * This is equivalent of rcu_read_lock(), but to be used when updates + * are being done using call_rcu_sched() or synchronize_rcu_sched(). + * Read-side critical sections can also be introduced by anything that + * disables preemption, including local_irq_disable() and friends. */ static inline void rcu_read_lock_sched(void) { @@ -420,54 +657,14 @@ static inline notrace void rcu_read_unlock_sched_notrace(void) preempt_enable_notrace(); } - /** - * rcu_dereference_raw - fetch an RCU-protected pointer + * rcu_assign_pointer() - assign to RCU-protected pointer + * @p: pointer to assign to + * @v: value to assign (publish) * - * The caller must be within some flavor of RCU read-side critical - * section, or must be otherwise preventing the pointer from changing, - * for example, by holding an appropriate lock. This pointer may later - * be safely dereferenced. It is the caller's responsibility to have - * done the right thing, as this primitive does no checking of any kind. - * - * Inserts memory barriers on architectures that require them - * (currently only the Alpha), and, more importantly, documents - * exactly which pointers are protected by RCU. - */ -#define rcu_dereference_raw(p) ({ \ - typeof(p) _________p1 = ACCESS_ONCE(p); \ - smp_read_barrier_depends(); \ - (_________p1); \ - }) - -/** - * rcu_dereference - fetch an RCU-protected pointer, checking for RCU - * - * Makes rcu_dereference_check() do the dirty work. - */ -#define rcu_dereference(p) \ - rcu_dereference_check(p, rcu_read_lock_held()) - -/** - * rcu_dereference_bh - fetch an RCU-protected pointer, checking for RCU-bh - * - * Makes rcu_dereference_check() do the dirty work. - */ -#define rcu_dereference_bh(p) \ - rcu_dereference_check(p, rcu_read_lock_bh_held() || irqs_disabled()) - -/** - * rcu_dereference_sched - fetch RCU-protected pointer, checking for RCU-sched - * - * Makes rcu_dereference_check() do the dirty work. - */ -#define rcu_dereference_sched(p) \ - rcu_dereference_check(p, rcu_read_lock_sched_held()) - -/** - * rcu_assign_pointer - assign (publicize) a pointer to a newly - * initialized structure that will be dereferenced by RCU read-side - * critical sections. Returns the value assigned. + * Assigns the specified value to the specified RCU-protected + * pointer, ensuring that any concurrent RCU readers will see + * any prior initialization. Returns the value assigned. * * Inserts memory barriers on architectures that require them * (pretty much all of them other than x86), and also prevents @@ -476,14 +673,17 @@ static inline notrace void rcu_read_unlock_sched_notrace(void) * call documents which pointers will be dereferenced by RCU read-side * code. */ - #define rcu_assign_pointer(p, v) \ - ({ \ - if (!__builtin_constant_p(v) || \ - ((v) != NULL)) \ - smp_wmb(); \ - (p) = (v); \ - }) + __rcu_assign_pointer((p), (v), __rcu) + +/** + * RCU_INIT_POINTER() - initialize an RCU protected pointer + * + * Initialize an RCU-protected pointer in such a way to avoid RCU-lockdep + * splats. + */ +#define RCU_INIT_POINTER(p, v) \ + p = (typeof(*v) __force __rcu *)(v) /* Infrastructure to implement the synchronize_() primitives. */ @@ -494,26 +694,37 @@ struct rcu_synchronize { extern void wakeme_after_rcu(struct rcu_head *head); +#ifdef CONFIG_PREEMPT_RCU + /** - * call_rcu - Queue an RCU callback for invocation after a grace period. + * call_rcu() - Queue an RCU callback for invocation after a grace period. * @head: structure to be used for queueing the RCU updates. - * @func: actual update function to be invoked after the grace period + * @func: actual callback function to be invoked after the grace period * - * The update function will be invoked some time after a full grace - * period elapses, in other words after all currently executing RCU - * read-side critical sections have completed. RCU read-side critical + * The callback function will be invoked some time after a full grace + * period elapses, in other words after all pre-existing RCU read-side + * critical sections have completed. However, the callback function + * might well execute concurrently with RCU read-side critical sections + * that started after call_rcu() was invoked. RCU read-side critical * sections are delimited by rcu_read_lock() and rcu_read_unlock(), * and may be nested. */ extern void call_rcu(struct rcu_head *head, void (*func)(struct rcu_head *head)); +#else /* #ifdef CONFIG_PREEMPT_RCU */ + +/* In classic RCU, call_rcu() is just call_rcu_sched(). */ +#define call_rcu call_rcu_sched + +#endif /* #else #ifdef CONFIG_PREEMPT_RCU */ + /** - * call_rcu_bh - Queue an RCU for invocation after a quicker grace period. + * call_rcu_bh() - Queue an RCU for invocation after a quicker grace period. * @head: structure to be used for queueing the RCU updates. - * @func: actual update function to be invoked after the grace period + * @func: actual callback function to be invoked after the grace period * - * The update function will be invoked some time after a full grace + * The callback function will be invoked some time after a full grace * period elapses, in other words after all currently executing RCU * read-side critical sections have completed. call_rcu_bh() assumes * that the read-side critical sections end on completion of a softirq @@ -566,37 +777,4 @@ static inline void debug_rcu_head_unqueue(struct rcu_head *head) } #endif /* #else !CONFIG_DEBUG_OBJECTS_RCU_HEAD */ -#ifndef CONFIG_PROVE_RCU -#define __do_rcu_dereference_check(c) do { } while (0) -#endif /* #ifdef CONFIG_PROVE_RCU */ - -#define __rcu_dereference_index_check(p, c) \ - ({ \ - typeof(p) _________p1 = ACCESS_ONCE(p); \ - __do_rcu_dereference_check(c); \ - smp_read_barrier_depends(); \ - (_________p1); \ - }) - -/** - * rcu_dereference_index_check() - rcu_dereference for indices with debug checking - * @p: The pointer to read, prior to dereferencing - * @c: The conditions under which the dereference will take place - * - * Similar to rcu_dereference_check(), but omits the sparse checking. - * This allows rcu_dereference_index_check() to be used on integers, - * which can then be used as array indices. Attempting to use - * rcu_dereference_check() on an integer will give compiler warnings - * because the sparse address-space mechanism relies on dereferencing - * the RCU-protected pointer. Dereferencing integers is not something - * that even gcc will put up with. - * - * Note that this function does not implicitly check for RCU read-side - * critical sections. If this function gains lots of uses, it might - * make sense to provide versions for each flavor of RCU, but it does - * not make sense as of early 2010. - */ -#define rcu_dereference_index_check(p, c) \ - __rcu_dereference_index_check((p), (c)) - #endif /* __LINUX_RCUPDATE_H */ diff --git a/include/linux/rcutiny.h b/include/linux/rcutiny.h index e2e893144a84..13877cb93a60 100644 --- a/include/linux/rcutiny.h +++ b/include/linux/rcutiny.h @@ -27,103 +27,101 @@ #include <linux/cache.h> -void rcu_sched_qs(int cpu); -void rcu_bh_qs(int cpu); -static inline void rcu_note_context_switch(int cpu) -{ - rcu_sched_qs(cpu); -} +#define rcu_init_sched() do { } while (0) -#define __rcu_read_lock() preempt_disable() -#define __rcu_read_unlock() preempt_enable() -#define __rcu_read_lock_bh() local_bh_disable() -#define __rcu_read_unlock_bh() local_bh_enable() -#define call_rcu_sched call_rcu +#ifdef CONFIG_TINY_RCU -#define rcu_init_sched() do { } while (0) -extern void rcu_check_callbacks(int cpu, int user); +static inline void synchronize_rcu_expedited(void) +{ + synchronize_sched(); /* Only one CPU, so pretty fast anyway!!! */ +} -static inline int rcu_needs_cpu(int cpu) +static inline void rcu_barrier(void) { - return 0; + rcu_barrier_sched(); /* Only one CPU, so only one list of callbacks! */ } -/* - * Return the number of grace periods. - */ -static inline long rcu_batches_completed(void) +#else /* #ifdef CONFIG_TINY_RCU */ + +void rcu_barrier(void); +void synchronize_rcu_expedited(void); + +#endif /* #else #ifdef CONFIG_TINY_RCU */ + +static inline void synchronize_rcu_bh(void) { - return 0; + synchronize_sched(); } -/* - * Return the number of bottom-half grace periods. - */ -static inline long rcu_batches_completed_bh(void) +static inline void synchronize_rcu_bh_expedited(void) { - return 0; + synchronize_sched(); } -static inline void rcu_force_quiescent_state(void) +#ifdef CONFIG_TINY_RCU + +static inline void rcu_preempt_note_context_switch(void) { } -static inline void rcu_bh_force_quiescent_state(void) +static inline void exit_rcu(void) { } -static inline void rcu_sched_force_quiescent_state(void) +static inline int rcu_needs_cpu(int cpu) { + return 0; } -extern void synchronize_sched(void); +#else /* #ifdef CONFIG_TINY_RCU */ + +void rcu_preempt_note_context_switch(void); +extern void exit_rcu(void); +int rcu_preempt_needs_cpu(void); -static inline void synchronize_rcu(void) +static inline int rcu_needs_cpu(int cpu) { - synchronize_sched(); + return rcu_preempt_needs_cpu(); } -static inline void synchronize_rcu_bh(void) +#endif /* #else #ifdef CONFIG_TINY_RCU */ + +static inline void rcu_note_context_switch(int cpu) { - synchronize_sched(); + rcu_sched_qs(cpu); + rcu_preempt_note_context_switch(); } -static inline void synchronize_rcu_expedited(void) +/* + * Return the number of grace periods. + */ +static inline long rcu_batches_completed(void) { - synchronize_sched(); + return 0; } -static inline void synchronize_rcu_bh_expedited(void) +/* + * Return the number of bottom-half grace periods. + */ +static inline long rcu_batches_completed_bh(void) { - synchronize_sched(); + return 0; } -struct notifier_block; - -#ifdef CONFIG_NO_HZ - -extern void rcu_enter_nohz(void); -extern void rcu_exit_nohz(void); - -#else /* #ifdef CONFIG_NO_HZ */ - -static inline void rcu_enter_nohz(void) +static inline void rcu_force_quiescent_state(void) { } -static inline void rcu_exit_nohz(void) +static inline void rcu_bh_force_quiescent_state(void) { } -#endif /* #else #ifdef CONFIG_NO_HZ */ - -static inline void exit_rcu(void) +static inline void rcu_sched_force_quiescent_state(void) { } -static inline int rcu_preempt_depth(void) +static inline void rcu_cpu_stall_reset(void) { - return 0; } #ifdef CONFIG_DEBUG_LOCK_ALLOC diff --git a/include/linux/rcutree.h b/include/linux/rcutree.h index c0ed1c056f29..95518e628794 100644 --- a/include/linux/rcutree.h +++ b/include/linux/rcutree.h @@ -30,64 +30,23 @@ #ifndef __LINUX_RCUTREE_H #define __LINUX_RCUTREE_H -struct notifier_block; - -extern void rcu_sched_qs(int cpu); -extern void rcu_bh_qs(int cpu); extern void rcu_note_context_switch(int cpu); extern int rcu_needs_cpu(int cpu); +extern void rcu_cpu_stall_reset(void); #ifdef CONFIG_TREE_PREEMPT_RCU -extern void __rcu_read_lock(void); -extern void __rcu_read_unlock(void); -extern void synchronize_rcu(void); extern void exit_rcu(void); -/* - * Defined as macro as it is a very low level header - * included from areas that don't even know about current - */ -#define rcu_preempt_depth() (current->rcu_read_lock_nesting) - #else /* #ifdef CONFIG_TREE_PREEMPT_RCU */ -static inline void __rcu_read_lock(void) -{ - preempt_disable(); -} - -static inline void __rcu_read_unlock(void) -{ - preempt_enable(); -} - -#define synchronize_rcu synchronize_sched - static inline void exit_rcu(void) { } -static inline int rcu_preempt_depth(void) -{ - return 0; -} - #endif /* #else #ifdef CONFIG_TREE_PREEMPT_RCU */ -static inline void __rcu_read_lock_bh(void) -{ - local_bh_disable(); -} -static inline void __rcu_read_unlock_bh(void) -{ - local_bh_enable(); -} - -extern void call_rcu_sched(struct rcu_head *head, - void (*func)(struct rcu_head *rcu)); extern void synchronize_rcu_bh(void); -extern void synchronize_sched(void); extern void synchronize_rcu_expedited(void); static inline void synchronize_rcu_bh_expedited(void) @@ -95,7 +54,7 @@ static inline void synchronize_rcu_bh_expedited(void) synchronize_sched_expedited(); } -extern void rcu_check_callbacks(int cpu, int user); +extern void rcu_barrier(void); extern long rcu_batches_completed(void); extern long rcu_batches_completed_bh(void); @@ -104,18 +63,6 @@ extern void rcu_force_quiescent_state(void); extern void rcu_bh_force_quiescent_state(void); extern void rcu_sched_force_quiescent_state(void); -#ifdef CONFIG_NO_HZ -void rcu_enter_nohz(void); -void rcu_exit_nohz(void); -#else /* CONFIG_NO_HZ */ -static inline void rcu_enter_nohz(void) -{ -} -static inline void rcu_exit_nohz(void) -{ -} -#endif /* CONFIG_NO_HZ */ - /* A context switch is a grace period for RCU-sched and RCU-bh. */ static inline int rcu_blocking_is_gp(void) { diff --git a/include/linux/resume-trace.h b/include/linux/resume-trace.h index bc8c3881c729..f31db2368782 100644 --- a/include/linux/resume-trace.h +++ b/include/linux/resume-trace.h @@ -3,6 +3,7 @@ #ifdef CONFIG_PM_TRACE #include <asm/resume-trace.h> +#include <linux/types.h> extern int pm_trace_enabled; @@ -14,6 +15,7 @@ static inline int pm_trace_is_enabled(void) struct device; extern void set_trace_device(struct device *); extern void generate_resume_trace(const void *tracedata, unsigned int user); +extern int show_trace_dev_match(char *buf, size_t size); #define TRACE_DEVICE(dev) do { \ if (pm_trace_enabled) \ diff --git a/include/linux/sched.h b/include/linux/sched.h index 1e2a6db2d7dd..0383601a927c 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -875,6 +875,7 @@ enum sched_domain_level { SD_LV_NONE = 0, SD_LV_SIBLING, SD_LV_MC, + SD_LV_BOOK, SD_LV_CPU, SD_LV_NODE, SD_LV_ALLNODES, @@ -1160,6 +1161,13 @@ struct sched_rt_entity { struct rcu_node; +enum perf_event_task_context { + perf_invalid_context = -1, + perf_hw_context = 0, + perf_sw_context, + perf_nr_task_contexts, +}; + struct task_struct { volatile long state; /* -1 unrunnable, 0 runnable, >0 stopped */ void *stack; @@ -1202,11 +1210,13 @@ struct task_struct { unsigned int policy; cpumask_t cpus_allowed; -#ifdef CONFIG_TREE_PREEMPT_RCU +#ifdef CONFIG_PREEMPT_RCU int rcu_read_lock_nesting; char rcu_read_unlock_special; - struct rcu_node *rcu_blocked_node; struct list_head rcu_node_entry; +#endif /* #ifdef CONFIG_PREEMPT_RCU */ +#ifdef CONFIG_TREE_PREEMPT_RCU + struct rcu_node *rcu_blocked_node; #endif /* #ifdef CONFIG_TREE_PREEMPT_RCU */ #if defined(CONFIG_SCHEDSTATS) || defined(CONFIG_TASK_DELAY_ACCT) @@ -1288,9 +1298,9 @@ struct task_struct { struct list_head cpu_timers[3]; /* process credentials */ - const struct cred *real_cred; /* objective and real subjective task + const struct cred __rcu *real_cred; /* objective and real subjective task * credentials (COW) */ - const struct cred *cred; /* effective (overridable) subjective task + const struct cred __rcu *cred; /* effective (overridable) subjective task * credentials (COW) */ struct mutex cred_guard_mutex; /* guard against foreign influences on * credential calculations @@ -1418,7 +1428,7 @@ struct task_struct { #endif #ifdef CONFIG_CGROUPS /* Control Group info protected by css_set_lock */ - struct css_set *cgroups; + struct css_set __rcu *cgroups; /* cg_list protected by css_set_lock and tsk->alloc_lock */ struct list_head cg_list; #endif @@ -1431,7 +1441,7 @@ struct task_struct { struct futex_pi_state *pi_state_cache; #endif #ifdef CONFIG_PERF_EVENTS - struct perf_event_context *perf_event_ctxp; + struct perf_event_context *perf_event_ctxp[perf_nr_task_contexts]; struct mutex perf_event_mutex; struct list_head perf_event_list; #endif @@ -1681,8 +1691,7 @@ extern void thread_group_times(struct task_struct *p, cputime_t *ut, cputime_t * /* * Per process flags */ -#define PF_ALIGNWARN 0x00000001 /* Print alignment warning msgs */ - /* Not implemented yet, only for 486*/ +#define PF_KSOFTIRQD 0x00000001 /* I am ksoftirqd */ #define PF_STARTING 0x00000002 /* being created */ #define PF_EXITING 0x00000004 /* getting shut down */ #define PF_EXITPIDONE 0x00000008 /* pi exit done on shut down */ @@ -1740,7 +1749,7 @@ extern void thread_group_times(struct task_struct *p, cputime_t *ut, cputime_t * #define tsk_used_math(p) ((p)->flags & PF_USED_MATH) #define used_math() tsk_used_math(current) -#ifdef CONFIG_TREE_PREEMPT_RCU +#ifdef CONFIG_PREEMPT_RCU #define RCU_READ_UNLOCK_BLOCKED (1 << 0) /* blocked while in RCU read-side. */ #define RCU_READ_UNLOCK_NEED_QS (1 << 1) /* RCU core needs CPU response. */ @@ -1749,7 +1758,9 @@ static inline void rcu_copy_process(struct task_struct *p) { p->rcu_read_lock_nesting = 0; p->rcu_read_unlock_special = 0; +#ifdef CONFIG_TREE_PREEMPT_RCU p->rcu_blocked_node = NULL; +#endif INIT_LIST_HEAD(&p->rcu_node_entry); } @@ -1826,6 +1837,19 @@ extern void sched_clock_idle_sleep_event(void); extern void sched_clock_idle_wakeup_event(u64 delta_ns); #endif +#ifdef CONFIG_IRQ_TIME_ACCOUNTING +/* + * An i/f to runtime opt-in for irq time accounting based off of sched_clock. + * The reason for this explicit opt-in is not to have perf penalty with + * slow sched_clocks. + */ +extern void enable_sched_clock_irqtime(void); +extern void disable_sched_clock_irqtime(void); +#else +static inline void enable_sched_clock_irqtime(void) {} +static inline void disable_sched_clock_irqtime(void) {} +#endif + extern unsigned long long task_sched_runtime(struct task_struct *task); extern unsigned long long thread_group_sched_runtime(struct task_struct *task); @@ -2367,9 +2391,9 @@ extern int __cond_resched_lock(spinlock_t *lock); extern int __cond_resched_softirq(void); -#define cond_resched_softirq() ({ \ - __might_sleep(__FILE__, __LINE__, SOFTIRQ_OFFSET); \ - __cond_resched_softirq(); \ +#define cond_resched_softirq() ({ \ + __might_sleep(__FILE__, __LINE__, SOFTIRQ_DISABLE_OFFSET); \ + __cond_resched_softirq(); \ }) /* diff --git a/include/linux/security.h b/include/linux/security.h index a22219afff09..b8246a8df7d2 100644 --- a/include/linux/security.h +++ b/include/linux/security.h @@ -74,7 +74,7 @@ extern int cap_file_mmap(struct file *file, unsigned long reqprot, extern int cap_task_fix_setuid(struct cred *new, const struct cred *old, int flags); extern int cap_task_prctl(int option, unsigned long arg2, unsigned long arg3, unsigned long arg4, unsigned long arg5); -extern int cap_task_setscheduler(struct task_struct *p, int policy, struct sched_param *lp); +extern int cap_task_setscheduler(struct task_struct *p); extern int cap_task_setioprio(struct task_struct *p, int ioprio); extern int cap_task_setnice(struct task_struct *p, int nice); extern int cap_syslog(int type, bool from_file); @@ -959,6 +959,12 @@ static inline void security_free_mnt_opts(struct security_mnt_opts *opts) * Sets the new child socket's sid to the openreq sid. * @inet_conn_established: * Sets the connection's peersid to the secmark on skb. + * @secmark_relabel_packet: + * check if the process should be allowed to relabel packets to the given secid + * @security_secmark_refcount_inc + * tells the LSM to increment the number of secmark labeling rules loaded + * @security_secmark_refcount_dec + * tells the LSM to decrement the number of secmark labeling rules loaded * @req_classify_flow: * Sets the flow's sid to the openreq sid. * @tun_dev_create: @@ -1279,9 +1285,13 @@ static inline void security_free_mnt_opts(struct security_mnt_opts *opts) * Return 0 if permission is granted. * * @secid_to_secctx: - * Convert secid to security context. + * Convert secid to security context. If secdata is NULL the length of + * the result will be returned in seclen, but no secdata will be returned. + * This does mean that the length could change between calls to check the + * length and the next call which actually allocates and returns the secdata. * @secid contains the security ID. * @secdata contains the pointer that stores the converted security context. + * @seclen pointer which contains the length of the data * @secctx_to_secid: * Convert security context to secid. * @secid contains the pointer to the generated security ID. @@ -1501,8 +1511,7 @@ struct security_operations { int (*task_getioprio) (struct task_struct *p); int (*task_setrlimit) (struct task_struct *p, unsigned int resource, struct rlimit *new_rlim); - int (*task_setscheduler) (struct task_struct *p, int policy, - struct sched_param *lp); + int (*task_setscheduler) (struct task_struct *p); int (*task_getscheduler) (struct task_struct *p); int (*task_movememory) (struct task_struct *p); int (*task_kill) (struct task_struct *p, @@ -1594,6 +1603,9 @@ struct security_operations { struct request_sock *req); void (*inet_csk_clone) (struct sock *newsk, const struct request_sock *req); void (*inet_conn_established) (struct sock *sk, struct sk_buff *skb); + int (*secmark_relabel_packet) (u32 secid); + void (*secmark_refcount_inc) (void); + void (*secmark_refcount_dec) (void); void (*req_classify_flow) (const struct request_sock *req, struct flowi *fl); int (*tun_dev_create)(void); void (*tun_dev_post_create)(struct sock *sk); @@ -1752,8 +1764,7 @@ int security_task_setioprio(struct task_struct *p, int ioprio); int security_task_getioprio(struct task_struct *p); int security_task_setrlimit(struct task_struct *p, unsigned int resource, struct rlimit *new_rlim); -int security_task_setscheduler(struct task_struct *p, - int policy, struct sched_param *lp); +int security_task_setscheduler(struct task_struct *p); int security_task_getscheduler(struct task_struct *p); int security_task_movememory(struct task_struct *p); int security_task_kill(struct task_struct *p, struct siginfo *info, @@ -2320,11 +2331,9 @@ static inline int security_task_setrlimit(struct task_struct *p, return 0; } -static inline int security_task_setscheduler(struct task_struct *p, - int policy, - struct sched_param *lp) +static inline int security_task_setscheduler(struct task_struct *p) { - return cap_task_setscheduler(p, policy, lp); + return cap_task_setscheduler(p); } static inline int security_task_getscheduler(struct task_struct *p) @@ -2551,6 +2560,9 @@ void security_inet_csk_clone(struct sock *newsk, const struct request_sock *req); void security_inet_conn_established(struct sock *sk, struct sk_buff *skb); +int security_secmark_relabel_packet(u32 secid); +void security_secmark_refcount_inc(void); +void security_secmark_refcount_dec(void); int security_tun_dev_create(void); void security_tun_dev_post_create(struct sock *sk); int security_tun_dev_attach(struct sock *sk); @@ -2705,6 +2717,19 @@ static inline void security_inet_conn_established(struct sock *sk, { } +static inline int security_secmark_relabel_packet(u32 secid) +{ + return 0; +} + +static inline void security_secmark_refcount_inc(void) +{ +} + +static inline void security_secmark_refcount_dec(void) +{ +} + static inline int security_tun_dev_create(void) { return 0; diff --git a/include/linux/selinux.h b/include/linux/selinux.h index 82e0f26a1299..44f459612690 100644 --- a/include/linux/selinux.h +++ b/include/linux/selinux.h @@ -21,74 +21,11 @@ struct kern_ipc_perm; #ifdef CONFIG_SECURITY_SELINUX /** - * selinux_string_to_sid - map a security context string to a security ID - * @str: the security context string to be mapped - * @sid: ID value returned via this. - * - * Returns 0 if successful, with the SID stored in sid. A value - * of zero for sid indicates no SID could be determined (but no error - * occurred). - */ -int selinux_string_to_sid(char *str, u32 *sid); - -/** - * selinux_secmark_relabel_packet_permission - secmark permission check - * @sid: SECMARK ID value to be applied to network packet - * - * Returns 0 if the current task is allowed to set the SECMARK label of - * packets with the supplied security ID. Note that it is implicit that - * the packet is always being relabeled from the default unlabeled value, - * and that the access control decision is made in the AVC. - */ -int selinux_secmark_relabel_packet_permission(u32 sid); - -/** - * selinux_secmark_refcount_inc - increments the secmark use counter - * - * SELinux keeps track of the current SECMARK targets in use so it knows - * when to apply SECMARK label access checks to network packets. This - * function incements this reference count to indicate that a new SECMARK - * target has been configured. - */ -void selinux_secmark_refcount_inc(void); - -/** - * selinux_secmark_refcount_dec - decrements the secmark use counter - * - * SELinux keeps track of the current SECMARK targets in use so it knows - * when to apply SECMARK label access checks to network packets. This - * function decements this reference count to indicate that one of the - * existing SECMARK targets has been removed/flushed. - */ -void selinux_secmark_refcount_dec(void); - -/** * selinux_is_enabled - is SELinux enabled? */ bool selinux_is_enabled(void); #else -static inline int selinux_string_to_sid(const char *str, u32 *sid) -{ - *sid = 0; - return 0; -} - -static inline int selinux_secmark_relabel_packet_permission(u32 sid) -{ - return 0; -} - -static inline void selinux_secmark_refcount_inc(void) -{ - return; -} - -static inline void selinux_secmark_refcount_dec(void) -{ - return; -} - static inline bool selinux_is_enabled(void) { return false; diff --git a/include/linux/spinlock.h b/include/linux/spinlock.h index f8854655860e..80e535897de6 100644 --- a/include/linux/spinlock.h +++ b/include/linux/spinlock.h @@ -50,6 +50,7 @@ #include <linux/preempt.h> #include <linux/linkage.h> #include <linux/compiler.h> +#include <linux/irqflags.h> #include <linux/thread_info.h> #include <linux/kernel.h> #include <linux/stringify.h> diff --git a/include/linux/srcu.h b/include/linux/srcu.h index 4d5d2f546dbf..58971e891f48 100644 --- a/include/linux/srcu.h +++ b/include/linux/srcu.h @@ -108,19 +108,43 @@ static inline int srcu_read_lock_held(struct srcu_struct *sp) #endif /* #else #ifdef CONFIG_DEBUG_LOCK_ALLOC */ /** - * srcu_dereference - fetch SRCU-protected pointer with checking + * srcu_dereference_check - fetch SRCU-protected pointer for later dereferencing + * @p: the pointer to fetch and protect for later dereferencing + * @sp: pointer to the srcu_struct, which is used to check that we + * really are in an SRCU read-side critical section. + * @c: condition to check for update-side use * - * Makes rcu_dereference_check() do the dirty work. + * If PROVE_RCU is enabled, invoking this outside of an RCU read-side + * critical section will result in an RCU-lockdep splat, unless @c evaluates + * to 1. The @c argument will normally be a logical expression containing + * lockdep_is_held() calls. */ -#define srcu_dereference(p, sp) \ - rcu_dereference_check(p, srcu_read_lock_held(sp)) +#define srcu_dereference_check(p, sp, c) \ + __rcu_dereference_check((p), srcu_read_lock_held(sp) || (c), __rcu) + +/** + * srcu_dereference - fetch SRCU-protected pointer for later dereferencing + * @p: the pointer to fetch and protect for later dereferencing + * @sp: pointer to the srcu_struct, which is used to check that we + * really are in an SRCU read-side critical section. + * + * Makes rcu_dereference_check() do the dirty work. If PROVE_RCU + * is enabled, invoking this outside of an RCU read-side critical + * section will result in an RCU-lockdep splat. + */ +#define srcu_dereference(p, sp) srcu_dereference_check((p), (sp), 0) /** * srcu_read_lock - register a new reader for an SRCU-protected structure. * @sp: srcu_struct in which to register the new reader. * * Enter an SRCU read-side critical section. Note that SRCU read-side - * critical sections may be nested. + * critical sections may be nested. However, it is illegal to + * call anything that waits on an SRCU grace period for the same + * srcu_struct, whether directly or indirectly. Please note that + * one way to indirectly wait on an SRCU grace period is to acquire + * a mutex that is held elsewhere while calling synchronize_srcu() or + * synchronize_srcu_expedited(). */ static inline int srcu_read_lock(struct srcu_struct *sp) __acquires(sp) { diff --git a/include/linux/stop_machine.h b/include/linux/stop_machine.h index 6b524a0d02e4..1808960c5059 100644 --- a/include/linux/stop_machine.h +++ b/include/linux/stop_machine.h @@ -126,8 +126,8 @@ int __stop_machine(int (*fn)(void *), void *data, const struct cpumask *cpus); #else /* CONFIG_STOP_MACHINE && CONFIG_SMP */ -static inline int stop_machine(int (*fn)(void *), void *data, - const struct cpumask *cpus) +static inline int __stop_machine(int (*fn)(void *), void *data, + const struct cpumask *cpus) { int ret; local_irq_disable(); @@ -136,5 +136,11 @@ static inline int stop_machine(int (*fn)(void *), void *data, return ret; } +static inline int stop_machine(int (*fn)(void *), void *data, + const struct cpumask *cpus) +{ + return __stop_machine(fn, data, cpus); +} + #endif /* CONFIG_STOP_MACHINE && CONFIG_SMP */ #endif /* _LINUX_STOP_MACHINE */ diff --git a/include/linux/sunrpc/auth_gss.h b/include/linux/sunrpc/auth_gss.h index 671538d25bc1..8eee9dbbfe7a 100644 --- a/include/linux/sunrpc/auth_gss.h +++ b/include/linux/sunrpc/auth_gss.h @@ -69,7 +69,7 @@ struct gss_cl_ctx { enum rpc_gss_proc gc_proc; u32 gc_seq; spinlock_t gc_seq_lock; - struct gss_ctx *gc_gss_ctx; + struct gss_ctx __rcu *gc_gss_ctx; struct xdr_netobj gc_wire_ctx; u32 gc_win; unsigned long gc_expiry; @@ -80,7 +80,7 @@ struct gss_upcall_msg; struct gss_cred { struct rpc_cred gc_base; enum rpc_gss_svc gc_service; - struct gss_cl_ctx *gc_ctx; + struct gss_cl_ctx __rcu *gc_ctx; struct gss_upcall_msg *gc_upcall; unsigned long gc_upcall_timestamp; unsigned char gc_machine_cred : 1; diff --git a/include/linux/suspend.h b/include/linux/suspend.h index 4af270ec2204..26697514c5ec 100644 --- a/include/linux/suspend.h +++ b/include/linux/suspend.h @@ -293,8 +293,8 @@ extern int unregister_pm_notifier(struct notifier_block *nb); extern bool events_check_enabled; extern bool pm_check_wakeup_events(void); -extern bool pm_get_wakeup_count(unsigned long *count); -extern bool pm_save_wakeup_count(unsigned long count); +extern bool pm_get_wakeup_count(unsigned int *count); +extern bool pm_save_wakeup_count(unsigned int count); #else /* !CONFIG_PM_SLEEP */ static inline int register_pm_notifier(struct notifier_block *nb) @@ -308,6 +308,8 @@ static inline int unregister_pm_notifier(struct notifier_block *nb) } #define pm_notifier(fn, pri) do { (void)(fn); } while (0) + +static inline bool pm_check_wakeup_events(void) { return true; } #endif /* !CONFIG_PM_SLEEP */ extern struct mutex pm_mutex; diff --git a/include/linux/sysfs.h b/include/linux/sysfs.h index 96eb576d82fd..30b881555fa5 100644 --- a/include/linux/sysfs.h +++ b/include/linux/sysfs.h @@ -164,6 +164,10 @@ int sysfs_add_file_to_group(struct kobject *kobj, const struct attribute *attr, const char *group); void sysfs_remove_file_from_group(struct kobject *kobj, const struct attribute *attr, const char *group); +int sysfs_merge_group(struct kobject *kobj, + const struct attribute_group *grp); +void sysfs_unmerge_group(struct kobject *kobj, + const struct attribute_group *grp); void sysfs_notify(struct kobject *kobj, const char *dir, const char *attr); void sysfs_notify_dirent(struct sysfs_dirent *sd); @@ -302,6 +306,17 @@ static inline void sysfs_remove_file_from_group(struct kobject *kobj, { } +static inline int sysfs_merge_group(struct kobject *kobj, + const struct attribute_group *grp) +{ + return 0; +} + +static inline void sysfs_unmerge_group(struct kobject *kobj, + const struct attribute_group *grp) +{ +} + static inline void sysfs_notify(struct kobject *kobj, const char *dir, const char *attr) { diff --git a/include/linux/thread_info.h b/include/linux/thread_info.h index a8cc4e13434c..c90696544176 100644 --- a/include/linux/thread_info.h +++ b/include/linux/thread_info.h @@ -23,12 +23,12 @@ struct restart_block { }; /* For futex_wait and futex_wait_requeue_pi */ struct { - u32 *uaddr; + u32 __user *uaddr; u32 val; u32 flags; u32 bitset; u64 time; - u32 *uaddr2; + u32 __user *uaddr2; } futex; /* For nanosleep */ struct { diff --git a/include/linux/topology.h b/include/linux/topology.h index 64e084ff5e5c..b91a40e847d2 100644 --- a/include/linux/topology.h +++ b/include/linux/topology.h @@ -201,6 +201,12 @@ int arch_update_cpu_topology(void); .balance_interval = 64, \ } +#ifdef CONFIG_SCHED_BOOK +#ifndef SD_BOOK_INIT +#error Please define an appropriate SD_BOOK_INIT in include/asm/topology.h!!! +#endif +#endif /* CONFIG_SCHED_BOOK */ + #ifdef CONFIG_NUMA #ifndef SD_NODE_INIT #error Please define an appropriate SD_NODE_INIT in include/asm/topology.h!!! diff --git a/include/linux/tracepoint.h b/include/linux/tracepoint.h index 103d1b61aacb..a4a90b6726ce 100644 --- a/include/linux/tracepoint.h +++ b/include/linux/tracepoint.h @@ -17,6 +17,7 @@ #include <linux/errno.h> #include <linux/types.h> #include <linux/rcupdate.h> +#include <linux/jump_label.h> struct module; struct tracepoint; @@ -145,7 +146,9 @@ static inline void tracepoint_update_probe_range(struct tracepoint *begin, extern struct tracepoint __tracepoint_##name; \ static inline void trace_##name(proto) \ { \ - if (unlikely(__tracepoint_##name.state)) \ + JUMP_LABEL(&__tracepoint_##name.state, do_trace); \ + return; \ +do_trace: \ __DO_TRACE(&__tracepoint_##name, \ TP_PROTO(data_proto), \ TP_ARGS(data_args)); \ diff --git a/include/linux/types.h b/include/linux/types.h index 01a082f56ef4..357dbc19606f 100644 --- a/include/linux/types.h +++ b/include/linux/types.h @@ -121,7 +121,15 @@ typedef __u64 u_int64_t; typedef __s64 int64_t; #endif -/* this is a special 64bit data type that is 8-byte aligned */ +/* + * aligned_u64 should be used in defining kernel<->userspace ABIs to avoid + * common 32/64-bit compat problems. + * 64-bit values align to 4-byte boundaries on x86_32 (and possibly other + * architectures) and to 8-byte boundaries on 64-bit architetures. The new + * aligned_64 type enforces 8-byte alignment so that structs containing + * aligned_64 values have the same alignment on 32-bit and 64-bit architectures. + * No conversions are necessary between 32-bit user-space and a 64-bit kernel. + */ #define aligned_u64 __u64 __attribute__((aligned(8))) #define aligned_be64 __be64 __attribute__((aligned(8))) #define aligned_le64 __le64 __attribute__((aligned(8))) @@ -178,6 +186,11 @@ typedef __u64 __bitwise __be64; typedef __u16 __bitwise __sum16; typedef __u32 __bitwise __wsum; +/* this is a special 64bit data type that is 8-byte aligned */ +#define __aligned_u64 __u64 __attribute__((aligned(8))) +#define __aligned_be64 __be64 __attribute__((aligned(8))) +#define __aligned_le64 __le64 __attribute__((aligned(8))) + #ifdef __KERNEL__ typedef unsigned __bitwise__ gfp_t; typedef unsigned __bitwise__ fmode_t; diff --git a/include/net/cls_cgroup.h b/include/net/cls_cgroup.h index ef6c24a529e1..a4dc5b027bd9 100644 --- a/include/net/cls_cgroup.h +++ b/include/net/cls_cgroup.h @@ -51,7 +51,8 @@ static inline u32 task_cls_classid(struct task_struct *p) return 0; rcu_read_lock(); - id = rcu_dereference(net_cls_subsys_id); + id = rcu_dereference_index_check(net_cls_subsys_id, + rcu_read_lock_held()); if (id >= 0) classid = container_of(task_subsys_state(p, id), struct cgroup_cls_state, css)->classid; diff --git a/include/net/netfilter/nf_conntrack.h b/include/net/netfilter/nf_conntrack.h index e624dae54fa4..caf17db87dbc 100644 --- a/include/net/netfilter/nf_conntrack.h +++ b/include/net/netfilter/nf_conntrack.h @@ -75,7 +75,7 @@ struct nf_conntrack_helper; /* nf_conn feature for connections that have a helper */ struct nf_conn_help { /* Helper. if any */ - struct nf_conntrack_helper *helper; + struct nf_conntrack_helper __rcu *helper; union nf_conntrack_help help; diff --git a/include/pcmcia/cs.h b/include/pcmcia/cs.h deleted file mode 100644 index 68d8bde7e8d6..000000000000 --- a/include/pcmcia/cs.h +++ /dev/null @@ -1,95 +0,0 @@ -/* - * cs.h - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * The initial developer of the original code is David A. Hinds - * <dahinds@users.sourceforge.net>. Portions created by David A. Hinds - * are Copyright (C) 1999 David A. Hinds. All Rights Reserved. - * - * (C) 1999 David A. Hinds - */ - -#ifndef _LINUX_CS_H -#define _LINUX_CS_H - -#ifdef __KERNEL__ -#include <linux/interrupt.h> -#endif - -/* ModifyConfiguration */ -typedef struct modconf_t { - u_int Attributes; - u_int Vcc, Vpp1, Vpp2; -} modconf_t; - -/* Attributes for ModifyConfiguration */ -#define CONF_IRQ_CHANGE_VALID 0x0100 -#define CONF_VCC_CHANGE_VALID 0x0200 -#define CONF_VPP1_CHANGE_VALID 0x0400 -#define CONF_VPP2_CHANGE_VALID 0x0800 -#define CONF_IO_CHANGE_WIDTH 0x1000 - -/* For RequestConfiguration */ -typedef struct config_req_t { - u_int Attributes; - u_int Vpp; /* both Vpp1 and Vpp2 */ - u_int IntType; - u_int ConfigBase; - u_char Status, Pin, Copy, ExtStatus; - u_char ConfigIndex; - u_int Present; -} config_req_t; - -/* Attributes for RequestConfiguration */ -#define CONF_ENABLE_IRQ 0x01 -#define CONF_ENABLE_DMA 0x02 -#define CONF_ENABLE_SPKR 0x04 -#define CONF_ENABLE_PULSE_IRQ 0x08 -#define CONF_VALID_CLIENT 0x100 - -/* IntType field */ -#define INT_MEMORY 0x01 -#define INT_MEMORY_AND_IO 0x02 -#define INT_CARDBUS 0x04 -#define INT_ZOOMED_VIDEO 0x08 - -/* Configuration registers present */ -#define PRESENT_OPTION 0x001 -#define PRESENT_STATUS 0x002 -#define PRESENT_PIN_REPLACE 0x004 -#define PRESENT_COPY 0x008 -#define PRESENT_EXT_STATUS 0x010 -#define PRESENT_IOBASE_0 0x020 -#define PRESENT_IOBASE_1 0x040 -#define PRESENT_IOBASE_2 0x080 -#define PRESENT_IOBASE_3 0x100 -#define PRESENT_IOSIZE 0x200 - -/* For RequestWindow */ -typedef struct win_req_t { - u_int Attributes; - u_long Base; - u_int Size; - u_int AccessSpeed; -} win_req_t; - -/* Attributes for RequestWindow */ -#define WIN_MEMORY_TYPE_CM 0x00 /* default */ -#define WIN_MEMORY_TYPE_AM 0x20 /* MAP_ATTRIB */ -#define WIN_DATA_WIDTH_8 0x00 /* default */ -#define WIN_DATA_WIDTH_16 0x02 /* MAP_16BIT */ -#define WIN_ENABLE 0x01 /* MAP_ACTIVE */ -#define WIN_USE_WAIT 0x40 /* MAP_USE_WAIT */ - -#define WIN_FLAGS_MAP 0x63 /* MAP_ATTRIB | MAP_16BIT | MAP_ACTIVE | - MAP_USE_WAIT */ -#define WIN_FLAGS_REQ 0x1c /* mapping to socket->win[i]: - 0x04 -> 0 - 0x08 -> 1 - 0x0c -> 2 - 0x10 -> 3 */ - -#endif /* _LINUX_CS_H */ diff --git a/include/pcmcia/ds.h b/include/pcmcia/ds.h index 70c58ed2278c..d830c87ff0a7 100644 --- a/include/pcmcia/ds.h +++ b/include/pcmcia/ds.h @@ -24,9 +24,11 @@ #ifdef __KERNEL__ #include <linux/device.h> +#include <linux/interrupt.h> #include <pcmcia/ss.h> #include <asm/atomic.h> + /* * PCMCIA device drivers (16-bit cards only; 32-bit cards require CardBus * a.k.a. PCI drivers @@ -36,8 +38,6 @@ struct pcmcia_device; struct config_t; struct net_device; -typedef struct resource *window_handle_t; - /* dynamic device IDs for PCMCIA device drivers. See * Documentation/pcmcia/driver.txt for details. */ @@ -47,6 +47,8 @@ struct pcmcia_dynids { }; struct pcmcia_driver { + const char *name; + int (*probe) (struct pcmcia_device *dev); void (*remove) (struct pcmcia_device *dev); @@ -90,15 +92,17 @@ struct pcmcia_device { struct list_head socket_device_list; - /* deprecated, will be cleaned up soon */ - config_req_t conf; - window_handle_t win; - /* device setup */ unsigned int irq; struct resource *resource[PCMCIA_NUM_RESOURCES]; + resource_size_t card_addr; /* for the 1st IOMEM resource */ + unsigned int vpp; - unsigned int io_lines; /* number of I/O lines */ + unsigned int config_flags; /* CONF_ENABLE_ flags below */ + unsigned int config_base; + unsigned int config_index; + unsigned int config_regs; /* PRESENT_ flags below */ + unsigned int io_lines; /* number of I/O lines */ /* Is the device suspended? */ u16 suspended:1; @@ -174,9 +178,6 @@ int pcmcia_parse_tuple(tuple_t *tuple, cisparse_t *parse); /* loop CIS entries for valid configuration */ int pcmcia_loop_config(struct pcmcia_device *p_dev, int (*conf_check) (struct pcmcia_device *p_dev, - cistpl_cftable_entry_t *cf, - cistpl_cftable_entry_t *dflt, - unsigned int vcc, void *priv_data), void *priv_data); @@ -206,16 +207,17 @@ pcmcia_request_exclusive_irq(struct pcmcia_device *p_dev, int __must_check pcmcia_request_irq(struct pcmcia_device *p_dev, irq_handler_t handler); -int pcmcia_request_configuration(struct pcmcia_device *p_dev, - config_req_t *req); +int pcmcia_enable_device(struct pcmcia_device *p_dev); -int pcmcia_request_window(struct pcmcia_device *p_dev, win_req_t *req, - window_handle_t *wh); -int pcmcia_release_window(struct pcmcia_device *p_dev, window_handle_t win); -int pcmcia_map_mem_page(struct pcmcia_device *p_dev, window_handle_t win, +int pcmcia_request_window(struct pcmcia_device *p_dev, struct resource *res, + unsigned int speed); +int pcmcia_release_window(struct pcmcia_device *p_dev, struct resource *res); +int pcmcia_map_mem_page(struct pcmcia_device *p_dev, struct resource *res, unsigned int offset); -int pcmcia_modify_configuration(struct pcmcia_device *p_dev, modconf_t *mod); +int pcmcia_fixup_vpp(struct pcmcia_device *p_dev, unsigned char new_vpp); +int pcmcia_fixup_iowidth(struct pcmcia_device *p_dev); + void pcmcia_disable_device(struct pcmcia_device *p_dev); /* IO ports */ @@ -224,15 +226,46 @@ void pcmcia_disable_device(struct pcmcia_device *p_dev); #define IO_DATA_PATH_WIDTH_16 0x08 #define IO_DATA_PATH_WIDTH_AUTO 0x10 -/* convert flag found in cfgtable to data path width parameter */ -static inline int pcmcia_io_cfg_data_width(unsigned int flags) -{ - if (!(flags & CISTPL_IO_8BIT)) - return IO_DATA_PATH_WIDTH_16; - if (!(flags & CISTPL_IO_16BIT)) - return IO_DATA_PATH_WIDTH_8; - return IO_DATA_PATH_WIDTH_AUTO; -} +/* IO memory */ +#define WIN_MEMORY_TYPE_CM 0x00 /* default */ +#define WIN_MEMORY_TYPE_AM 0x20 /* MAP_ATTRIB */ +#define WIN_DATA_WIDTH_8 0x00 /* default */ +#define WIN_DATA_WIDTH_16 0x02 /* MAP_16BIT */ +#define WIN_ENABLE 0x01 /* MAP_ACTIVE */ +#define WIN_USE_WAIT 0x40 /* MAP_USE_WAIT */ + +#define WIN_FLAGS_MAP 0x63 /* MAP_ATTRIB | MAP_16BIT | MAP_ACTIVE | + MAP_USE_WAIT */ +#define WIN_FLAGS_REQ 0x1c /* mapping to socket->win[i]: + 0x04 -> 0 + 0x08 -> 1 + 0x0c -> 2 + 0x10 -> 3 */ + +/* config_reg{ister}s present for this PCMCIA device */ +#define PRESENT_OPTION 0x001 +#define PRESENT_STATUS 0x002 +#define PRESENT_PIN_REPLACE 0x004 +#define PRESENT_COPY 0x008 +#define PRESENT_EXT_STATUS 0x010 +#define PRESENT_IOBASE_0 0x020 +#define PRESENT_IOBASE_1 0x040 +#define PRESENT_IOBASE_2 0x080 +#define PRESENT_IOBASE_3 0x100 +#define PRESENT_IOSIZE 0x200 + +/* flags to be passed to pcmcia_enable_device() */ +#define CONF_ENABLE_IRQ 0x0001 +#define CONF_ENABLE_SPKR 0x0002 +#define CONF_ENABLE_PULSE_IRQ 0x0004 +#define CONF_ENABLE_ESR 0x0008 + +/* flags used by pcmcia_loop_config() autoconfiguration */ +#define CONF_AUTO_CHECK_VCC 0x0100 /* check for matching Vcc? */ +#define CONF_AUTO_SET_VPP 0x0200 /* set Vpp? */ +#define CONF_AUTO_AUDIO 0x0400 /* enable audio line? */ +#define CONF_AUTO_SET_IO 0x0800 /* set ->resource[0,1] */ +#define CONF_AUTO_SET_IOMEM 0x1000 /* set ->resource[2] */ #endif /* __KERNEL__ */ diff --git a/include/pcmcia/ss.h b/include/pcmcia/ss.h index 626b63c33d9e..731cde010f42 100644 --- a/include/pcmcia/ss.h +++ b/include/pcmcia/ss.h @@ -19,7 +19,6 @@ #include <linux/sched.h> /* task_struct, completion */ #include <linux/mutex.h> -#include <pcmcia/cs.h> #ifdef CONFIG_CARDBUS #include <linux/pci.h> #endif diff --git a/include/trace/events/irq.h b/include/trace/events/irq.h index 0e4cfb694fe7..6fa7cbab7d93 100644 --- a/include/trace/events/irq.h +++ b/include/trace/events/irq.h @@ -5,7 +5,9 @@ #define _TRACE_IRQ_H #include <linux/tracepoint.h> -#include <linux/interrupt.h> + +struct irqaction; +struct softirq_action; #define softirq_name(sirq) { sirq##_SOFTIRQ, #sirq } #define show_softirq_name(val) \ @@ -93,7 +95,10 @@ DECLARE_EVENT_CLASS(softirq, ), TP_fast_assign( - __entry->vec = (int)(h - vec); + if (vec) + __entry->vec = (int)(h - vec); + else + __entry->vec = (int)(long)h; ), TP_printk("vec=%d [action=%s]", __entry->vec, @@ -136,6 +141,23 @@ DEFINE_EVENT(softirq, softirq_exit, TP_ARGS(h, vec) ); +/** + * softirq_raise - called immediately when a softirq is raised + * @h: pointer to struct softirq_action + * @vec: pointer to first struct softirq_action in softirq_vec array + * + * The @h parameter contains a pointer to the softirq vector number which is + * raised. @vec is NULL and it means @h includes vector number not + * softirq_action. When used in combination with the softirq_entry tracepoint + * we can determine the softirq raise latency. + */ +DEFINE_EVENT(softirq, softirq_raise, + + TP_PROTO(struct softirq_action *h, struct softirq_action *vec), + + TP_ARGS(h, vec) +); + #endif /* _TRACE_IRQ_H */ /* This part must be outside protection */ diff --git a/include/trace/events/napi.h b/include/trace/events/napi.h index 188deca2f3c7..8fe1e93f531d 100644 --- a/include/trace/events/napi.h +++ b/include/trace/events/napi.h @@ -6,10 +6,31 @@ #include <linux/netdevice.h> #include <linux/tracepoint.h> +#include <linux/ftrace.h> + +#define NO_DEV "(no_device)" + +TRACE_EVENT(napi_poll, -DECLARE_TRACE(napi_poll, TP_PROTO(struct napi_struct *napi), - TP_ARGS(napi)); + + TP_ARGS(napi), + + TP_STRUCT__entry( + __field( struct napi_struct *, napi) + __string( dev_name, napi->dev ? napi->dev->name : NO_DEV) + ), + + TP_fast_assign( + __entry->napi = napi; + __assign_str(dev_name, napi->dev ? napi->dev->name : NO_DEV); + ), + + TP_printk("napi poll on napi struct %p for device %s", + __entry->napi, __get_str(dev_name)) +); + +#undef NO_DEV #endif /* _TRACE_NAPI_H_ */ diff --git a/include/trace/events/net.h b/include/trace/events/net.h new file mode 100644 index 000000000000..5f247f5ffc56 --- /dev/null +++ b/include/trace/events/net.h @@ -0,0 +1,82 @@ +#undef TRACE_SYSTEM +#define TRACE_SYSTEM net + +#if !defined(_TRACE_NET_H) || defined(TRACE_HEADER_MULTI_READ) +#define _TRACE_NET_H + +#include <linux/skbuff.h> +#include <linux/netdevice.h> +#include <linux/ip.h> +#include <linux/tracepoint.h> + +TRACE_EVENT(net_dev_xmit, + + TP_PROTO(struct sk_buff *skb, + int rc), + + TP_ARGS(skb, rc), + + TP_STRUCT__entry( + __field( void *, skbaddr ) + __field( unsigned int, len ) + __field( int, rc ) + __string( name, skb->dev->name ) + ), + + TP_fast_assign( + __entry->skbaddr = skb; + __entry->len = skb->len; + __entry->rc = rc; + __assign_str(name, skb->dev->name); + ), + + TP_printk("dev=%s skbaddr=%p len=%u rc=%d", + __get_str(name), __entry->skbaddr, __entry->len, __entry->rc) +); + +DECLARE_EVENT_CLASS(net_dev_template, + + TP_PROTO(struct sk_buff *skb), + + TP_ARGS(skb), + + TP_STRUCT__entry( + __field( void *, skbaddr ) + __field( unsigned int, len ) + __string( name, skb->dev->name ) + ), + + TP_fast_assign( + __entry->skbaddr = skb; + __entry->len = skb->len; + __assign_str(name, skb->dev->name); + ), + + TP_printk("dev=%s skbaddr=%p len=%u", + __get_str(name), __entry->skbaddr, __entry->len) +) + +DEFINE_EVENT(net_dev_template, net_dev_queue, + + TP_PROTO(struct sk_buff *skb), + + TP_ARGS(skb) +); + +DEFINE_EVENT(net_dev_template, netif_receive_skb, + + TP_PROTO(struct sk_buff *skb), + + TP_ARGS(skb) +); + +DEFINE_EVENT(net_dev_template, netif_rx, + + TP_PROTO(struct sk_buff *skb), + + TP_ARGS(skb) +); +#endif /* _TRACE_NET_H */ + +/* This part must be outside protection */ +#include <trace/define_trace.h> diff --git a/include/trace/events/power.h b/include/trace/events/power.h index 35a2a6e7bf1e..286784d69b8f 100644 --- a/include/trace/events/power.h +++ b/include/trace/events/power.h @@ -10,12 +10,17 @@ #ifndef _TRACE_POWER_ENUM_ #define _TRACE_POWER_ENUM_ enum { - POWER_NONE = 0, - POWER_CSTATE = 1, - POWER_PSTATE = 2, + POWER_NONE = 0, + POWER_CSTATE = 1, /* C-State */ + POWER_PSTATE = 2, /* Fequency change or DVFS */ + POWER_SSTATE = 3, /* Suspend */ }; #endif +/* + * The power events are used for cpuidle & suspend (power_start, power_end) + * and for cpufreq (power_frequency) + */ DECLARE_EVENT_CLASS(power, TP_PROTO(unsigned int type, unsigned int state, unsigned int cpu_id), @@ -70,6 +75,85 @@ TRACE_EVENT(power_end, ); +/* + * The clock events are used for clock enable/disable and for + * clock rate change + */ +DECLARE_EVENT_CLASS(clock, + + TP_PROTO(const char *name, unsigned int state, unsigned int cpu_id), + + TP_ARGS(name, state, cpu_id), + + TP_STRUCT__entry( + __string( name, name ) + __field( u64, state ) + __field( u64, cpu_id ) + ), + + TP_fast_assign( + __assign_str(name, name); + __entry->state = state; + __entry->cpu_id = cpu_id; + ), + + TP_printk("%s state=%lu cpu_id=%lu", __get_str(name), + (unsigned long)__entry->state, (unsigned long)__entry->cpu_id) +); + +DEFINE_EVENT(clock, clock_enable, + + TP_PROTO(const char *name, unsigned int state, unsigned int cpu_id), + + TP_ARGS(name, state, cpu_id) +); + +DEFINE_EVENT(clock, clock_disable, + + TP_PROTO(const char *name, unsigned int state, unsigned int cpu_id), + + TP_ARGS(name, state, cpu_id) +); + +DEFINE_EVENT(clock, clock_set_rate, + + TP_PROTO(const char *name, unsigned int state, unsigned int cpu_id), + + TP_ARGS(name, state, cpu_id) +); + +/* + * The power domain events are used for power domains transitions + */ +DECLARE_EVENT_CLASS(power_domain, + + TP_PROTO(const char *name, unsigned int state, unsigned int cpu_id), + + TP_ARGS(name, state, cpu_id), + + TP_STRUCT__entry( + __string( name, name ) + __field( u64, state ) + __field( u64, cpu_id ) + ), + + TP_fast_assign( + __assign_str(name, name); + __entry->state = state; + __entry->cpu_id = cpu_id; +), + + TP_printk("%s state=%lu cpu_id=%lu", __get_str(name), + (unsigned long)__entry->state, (unsigned long)__entry->cpu_id) +); + +DEFINE_EVENT(power_domain, power_domain_target, + + TP_PROTO(const char *name, unsigned int state, unsigned int cpu_id), + + TP_ARGS(name, state, cpu_id) +); + #endif /* _TRACE_POWER_H */ /* This part must be outside protection */ diff --git a/include/trace/events/sched.h b/include/trace/events/sched.h index 9208c92aeab5..f6334782a593 100644 --- a/include/trace/events/sched.h +++ b/include/trace/events/sched.h @@ -362,6 +362,35 @@ TRACE_EVENT(sched_stat_runtime, (unsigned long long)__entry->vruntime) ); +/* + * Tracepoint for showing priority inheritance modifying a tasks + * priority. + */ +TRACE_EVENT(sched_pi_setprio, + + TP_PROTO(struct task_struct *tsk, int newprio), + + TP_ARGS(tsk, newprio), + + TP_STRUCT__entry( + __array( char, comm, TASK_COMM_LEN ) + __field( pid_t, pid ) + __field( int, oldprio ) + __field( int, newprio ) + ), + + TP_fast_assign( + memcpy(__entry->comm, tsk->comm, TASK_COMM_LEN); + __entry->pid = tsk->pid; + __entry->oldprio = tsk->prio; + __entry->newprio = newprio; + ), + + TP_printk("comm=%s pid=%d oldprio=%d newprio=%d", + __entry->comm, __entry->pid, + __entry->oldprio, __entry->newprio) +); + #endif /* _TRACE_SCHED_H */ /* This part must be outside protection */ diff --git a/include/trace/events/skb.h b/include/trace/events/skb.h index 4b2be6dc76f0..75ce9d500d8e 100644 --- a/include/trace/events/skb.h +++ b/include/trace/events/skb.h @@ -35,6 +35,23 @@ TRACE_EVENT(kfree_skb, __entry->skbaddr, __entry->protocol, __entry->location) ); +TRACE_EVENT(consume_skb, + + TP_PROTO(struct sk_buff *skb), + + TP_ARGS(skb), + + TP_STRUCT__entry( + __field( void *, skbaddr ) + ), + + TP_fast_assign( + __entry->skbaddr = skb; + ), + + TP_printk("skbaddr=%p", __entry->skbaddr) +); + TRACE_EVENT(skb_copy_datagram_iovec, TP_PROTO(const struct sk_buff *skb, int len), diff --git a/init/Kconfig b/init/Kconfig index 2de5b1cbadd9..36890f0c8456 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -21,6 +21,13 @@ config CONSTRUCTORS depends on !UML default y +config HAVE_IRQ_WORK + bool + +config IRQ_WORK + bool + depends on HAVE_IRQ_WORK + menu "General setup" config EXPERIMENTAL @@ -332,6 +339,8 @@ config AUDIT_TREE depends on AUDITSYSCALL select FSNOTIFY +source "kernel/irq/Kconfig" + menu "RCU Subsystem" choice @@ -340,6 +349,7 @@ choice config TREE_RCU bool "Tree-based hierarchical RCU" + depends on !PREEMPT && SMP help This option selects the RCU implementation that is designed for very large SMP system with hundreds or @@ -347,7 +357,7 @@ config TREE_RCU smaller systems. config TREE_PREEMPT_RCU - bool "Preemptable tree-based hierarchical RCU" + bool "Preemptible tree-based hierarchical RCU" depends on PREEMPT help This option selects the RCU implementation that is @@ -365,8 +375,22 @@ config TINY_RCU is not required. This option greatly reduces the memory footprint of RCU. +config TINY_PREEMPT_RCU + bool "Preemptible UP-only small-memory-footprint RCU" + depends on !SMP && PREEMPT + help + This option selects the RCU implementation that is designed + for real-time UP systems. This option greatly reduces the + memory footprint of RCU. + endchoice +config PREEMPT_RCU + def_bool ( TREE_PREEMPT_RCU || TINY_PREEMPT_RCU ) + help + This option enables preemptible-RCU code that is common between + the TREE_PREEMPT_RCU and TINY_PREEMPT_RCU implementations. + config RCU_TRACE bool "Enable tracing for RCU" depends on TREE_RCU || TREE_PREEMPT_RCU @@ -387,9 +411,12 @@ config RCU_FANOUT help This option controls the fanout of hierarchical implementations of RCU, allowing RCU to work efficiently on machines with - large numbers of CPUs. This value must be at least the cube - root of NR_CPUS, which allows NR_CPUS up to 32,768 for 32-bit - systems and up to 262,144 for 64-bit systems. + large numbers of CPUs. This value must be at least the fourth + root of NR_CPUS, which allows NR_CPUS to be insanely large. + The default value of RCU_FANOUT should be used for production + systems, but if you are stress-testing the RCU implementation + itself, small RCU_FANOUT values allow you to test large-system + code paths on small(er) systems. Select a specific number if testing RCU itself. Take the default if unsure. @@ -987,6 +1014,7 @@ config PERF_EVENTS default y if (PROFILING || PERF_COUNTERS) depends on HAVE_PERF_EVENTS select ANON_INODES + select IRQ_WORK help Enable kernel support for various performance events provided by software and hardware. diff --git a/init/main.c b/init/main.c index 94ab488039aa..9684c9670b48 100644 --- a/init/main.c +++ b/init/main.c @@ -556,7 +556,6 @@ asmlinkage void __init start_kernel(void) local_irq_disable(); early_boot_irqs_off(); - early_init_irq_lock_class(); /* * Interrupts are still disabled. Do necessary setups, then diff --git a/kernel/Makefile b/kernel/Makefile index 0b72d1a74be0..e2c9d52cfe9e 100644 --- a/kernel/Makefile +++ b/kernel/Makefile @@ -10,7 +10,7 @@ obj-y = sched.o fork.o exec_domain.o panic.o printk.o \ kthread.o wait.o kfifo.o sys_ni.o posix-cpu-timers.o mutex.o \ hrtimer.o rwsem.o nsproxy.o srcu.o semaphore.o \ notifier.o ksysfs.o pm_qos_params.o sched_clock.o cred.o \ - async.o range.o + async.o range.o jump_label.o obj-$(CONFIG_HAVE_EARLY_RES) += early_res.o obj-y += groups.o @@ -23,6 +23,7 @@ CFLAGS_REMOVE_rtmutex-debug.o = -pg CFLAGS_REMOVE_cgroup-debug.o = -pg CFLAGS_REMOVE_sched_clock.o = -pg CFLAGS_REMOVE_perf_event.o = -pg +CFLAGS_REMOVE_irq_work.o = -pg endif obj-$(CONFIG_FREEZER) += freezer.o @@ -86,6 +87,7 @@ obj-$(CONFIG_TREE_RCU) += rcutree.o obj-$(CONFIG_TREE_PREEMPT_RCU) += rcutree.o obj-$(CONFIG_TREE_RCU_TRACE) += rcutree_trace.o obj-$(CONFIG_TINY_RCU) += rcutiny.o +obj-$(CONFIG_TINY_PREEMPT_RCU) += rcutiny.o obj-$(CONFIG_RELAY) += relay.o obj-$(CONFIG_SYSCTL) += utsname_sysctl.o obj-$(CONFIG_TASK_DELAY_ACCT) += delayacct.o @@ -100,6 +102,7 @@ obj-$(CONFIG_TRACING) += trace/ obj-$(CONFIG_X86_DS) += trace/ obj-$(CONFIG_RING_BUFFER) += trace/ obj-$(CONFIG_SMP) += sched_cpupri.o +obj-$(CONFIG_IRQ_WORK) += irq_work.o obj-$(CONFIG_PERF_EVENTS) += perf_event.o obj-$(CONFIG_HAVE_HW_BREAKPOINT) += hw_breakpoint.o obj-$(CONFIG_USER_RETURN_NOTIFIER) += user-return-notifier.o diff --git a/kernel/cgroup.c b/kernel/cgroup.c index c9483d8f6140..291ba3d04bea 100644 --- a/kernel/cgroup.c +++ b/kernel/cgroup.c @@ -138,7 +138,7 @@ struct css_id { * is called after synchronize_rcu(). But for safe use, css_is_removed() * css_tryget() should be used for avoiding race. */ - struct cgroup_subsys_state *css; + struct cgroup_subsys_state __rcu *css; /* * ID of this css. */ diff --git a/kernel/cpuset.c b/kernel/cpuset.c index b23c0979bbe7..51b143e2a07a 100644 --- a/kernel/cpuset.c +++ b/kernel/cpuset.c @@ -1397,7 +1397,7 @@ static int cpuset_can_attach(struct cgroup_subsys *ss, struct cgroup *cont, if (tsk->flags & PF_THREAD_BOUND) return -EINVAL; - ret = security_task_setscheduler(tsk, 0, NULL); + ret = security_task_setscheduler(tsk); if (ret) return ret; if (threadgroup) { @@ -1405,7 +1405,7 @@ static int cpuset_can_attach(struct cgroup_subsys *ss, struct cgroup *cont, rcu_read_lock(); list_for_each_entry_rcu(c, &tsk->thread_group, thread_group) { - ret = security_task_setscheduler(c, 0, NULL); + ret = security_task_setscheduler(c); if (ret) { rcu_read_unlock(); return ret; diff --git a/kernel/exit.c b/kernel/exit.c index 03120229db28..e2bdf37f9fde 100644 --- a/kernel/exit.c +++ b/kernel/exit.c @@ -149,9 +149,7 @@ static void delayed_put_task_struct(struct rcu_head *rhp) { struct task_struct *tsk = container_of(rhp, struct task_struct, rcu); -#ifdef CONFIG_PERF_EVENTS - WARN_ON_ONCE(tsk->perf_event_ctxp); -#endif + perf_event_delayed_put(tsk); trace_sched_process_free(tsk); put_task_struct(tsk); } diff --git a/kernel/futex.c b/kernel/futex.c index 6a3a5fa1526d..a118bf160e0b 100644 --- a/kernel/futex.c +++ b/kernel/futex.c @@ -91,6 +91,7 @@ struct futex_pi_state { /** * struct futex_q - The hashed futex queue entry, one per waiting task + * @list: priority-sorted list of tasks waiting on this futex * @task: the task waiting on the futex * @lock_ptr: the hash bucket lock * @key: the key the futex is hashed on @@ -104,7 +105,7 @@ struct futex_pi_state { * * A futex_q has a woken state, just like tasks have TASK_RUNNING. * It is considered woken when plist_node_empty(&q->list) || q->lock_ptr == 0. - * The order of wakup is always to make the first condition true, then + * The order of wakeup is always to make the first condition true, then * the second. * * PI futexes are typically woken before they are removed from the hash list via @@ -295,7 +296,7 @@ void put_futex_key(int fshared, union futex_key *key) * Slow path to fixup the fault we just took in the atomic write * access to @uaddr. * - * We have no generic implementation of a non destructive write to the + * We have no generic implementation of a non-destructive write to the * user address. We know that we faulted in the atomic pagefault * disabled section so we can as well avoid the #PF overhead by * calling get_user_pages() right away. @@ -515,7 +516,7 @@ lookup_pi_state(u32 uval, struct futex_hash_bucket *hb, */ pi_state = this->pi_state; /* - * Userspace might have messed up non PI and PI futexes + * Userspace might have messed up non-PI and PI futexes */ if (unlikely(!pi_state)) return -EINVAL; @@ -736,8 +737,8 @@ static void wake_futex(struct futex_q *q) /* * We set q->lock_ptr = NULL _before_ we wake up the task. If - * a non futex wake up happens on another CPU then the task - * might exit and p would dereference a non existing task + * a non-futex wake up happens on another CPU then the task + * might exit and p would dereference a non-existing task * struct. Prevent this by holding a reference on p across the * wake up. */ @@ -1131,11 +1132,13 @@ static int futex_proxy_trylock_atomic(u32 __user *pifutex, /** * futex_requeue() - Requeue waiters from uaddr1 to uaddr2 - * uaddr1: source futex user address - * uaddr2: target futex user address - * nr_wake: number of waiters to wake (must be 1 for requeue_pi) - * nr_requeue: number of waiters to requeue (0-INT_MAX) - * requeue_pi: if we are attempting to requeue from a non-pi futex to a + * @uaddr1: source futex user address + * @fshared: 0 for a PROCESS_PRIVATE futex, 1 for PROCESS_SHARED + * @uaddr2: target futex user address + * @nr_wake: number of waiters to wake (must be 1 for requeue_pi) + * @nr_requeue: number of waiters to requeue (0-INT_MAX) + * @cmpval: @uaddr1 expected value (or %NULL) + * @requeue_pi: if we are attempting to requeue from a non-pi futex to a * pi futex (pi to pi requeue is not supported) * * Requeue waiters on uaddr1 to uaddr2. In the requeue_pi case, try to acquire @@ -1360,10 +1363,10 @@ out: /* The key must be already stored in q->key. */ static inline struct futex_hash_bucket *queue_lock(struct futex_q *q) + __acquires(&hb->lock) { struct futex_hash_bucket *hb; - get_futex_key_refs(&q->key); hb = hash_futex(&q->key); q->lock_ptr = &hb->lock; @@ -1373,9 +1376,9 @@ static inline struct futex_hash_bucket *queue_lock(struct futex_q *q) static inline void queue_unlock(struct futex_q *q, struct futex_hash_bucket *hb) + __releases(&hb->lock) { spin_unlock(&hb->lock); - drop_futex_key_refs(&q->key); } /** @@ -1391,6 +1394,7 @@ queue_unlock(struct futex_q *q, struct futex_hash_bucket *hb) * an example). */ static inline void queue_me(struct futex_q *q, struct futex_hash_bucket *hb) + __releases(&hb->lock) { int prio; @@ -1471,6 +1475,7 @@ retry: * and dropped here. */ static void unqueue_me_pi(struct futex_q *q) + __releases(q->lock_ptr) { WARN_ON(plist_node_empty(&q->list)); plist_del(&q->list, &q->list.plist); @@ -1480,8 +1485,6 @@ static void unqueue_me_pi(struct futex_q *q) q->pi_state = NULL; spin_unlock(q->lock_ptr); - - drop_futex_key_refs(&q->key); } /* @@ -1812,7 +1815,10 @@ static int futex_wait(u32 __user *uaddr, int fshared, } retry: - /* Prepare to wait on uaddr. */ + /* + * Prepare to wait on uaddr. On success, holds hb lock and increments + * q.key refs. + */ ret = futex_wait_setup(uaddr, val, fshared, &q, &hb); if (ret) goto out; @@ -1822,28 +1828,27 @@ retry: /* If we were woken (and unqueued), we succeeded, whatever. */ ret = 0; + /* unqueue_me() drops q.key ref */ if (!unqueue_me(&q)) - goto out_put_key; + goto out; ret = -ETIMEDOUT; if (to && !to->task) - goto out_put_key; + goto out; /* * We expect signal_pending(current), but we might be the * victim of a spurious wakeup as well. */ - if (!signal_pending(current)) { - put_futex_key(fshared, &q.key); + if (!signal_pending(current)) goto retry; - } ret = -ERESTARTSYS; if (!abs_time) - goto out_put_key; + goto out; restart = ¤t_thread_info()->restart_block; restart->fn = futex_wait_restart; - restart->futex.uaddr = (u32 *)uaddr; + restart->futex.uaddr = uaddr; restart->futex.val = val; restart->futex.time = abs_time->tv64; restart->futex.bitset = bitset; @@ -1856,8 +1861,6 @@ retry: ret = -ERESTART_RESTARTBLOCK; -out_put_key: - put_futex_key(fshared, &q.key); out: if (to) { hrtimer_cancel(&to->timer); @@ -1869,7 +1872,7 @@ out: static long futex_wait_restart(struct restart_block *restart) { - u32 __user *uaddr = (u32 __user *)restart->futex.uaddr; + u32 __user *uaddr = restart->futex.uaddr; int fshared = 0; ktime_t t, *tp = NULL; @@ -2236,7 +2239,10 @@ static int futex_wait_requeue_pi(u32 __user *uaddr, int fshared, q.rt_waiter = &rt_waiter; q.requeue_pi_key = &key2; - /* Prepare to wait on uaddr. */ + /* + * Prepare to wait on uaddr. On success, increments q.key (key1) ref + * count. + */ ret = futex_wait_setup(uaddr, val, fshared, &q, &hb); if (ret) goto out_key2; @@ -2254,7 +2260,9 @@ static int futex_wait_requeue_pi(u32 __user *uaddr, int fshared, * In order for us to be here, we know our q.key == key2, and since * we took the hb->lock above, we also know that futex_requeue() has * completed and we no longer have to concern ourselves with a wakeup - * race with the atomic proxy lock acquition by the requeue code. + * race with the atomic proxy lock acquisition by the requeue code. The + * futex_requeue dropped our key1 reference and incremented our key2 + * reference count. */ /* Check if the requeue code acquired the second futex for us. */ @@ -2458,7 +2466,7 @@ retry: */ static inline int fetch_robust_entry(struct robust_list __user **entry, struct robust_list __user * __user *head, - int *pi) + unsigned int *pi) { unsigned long uentry; @@ -2647,7 +2655,7 @@ static int __init futex_init(void) * of the complex code paths. Also we want to prevent * registration of robust lists in that case. NULL is * guaranteed to fault and we get -EFAULT on functional - * implementation, the non functional ones will return + * implementation, the non-functional ones will return * -ENOSYS. */ curval = cmpxchg_futex_value_locked(NULL, 0, 0); diff --git a/kernel/futex_compat.c b/kernel/futex_compat.c index d49afb2395e5..06da4dfc339b 100644 --- a/kernel/futex_compat.c +++ b/kernel/futex_compat.c @@ -19,7 +19,7 @@ */ static inline int fetch_robust_entry(compat_uptr_t *uentry, struct robust_list __user **entry, - compat_uptr_t __user *head, int *pi) + compat_uptr_t __user *head, unsigned int *pi) { if (get_user(*uentry, head)) return -EFAULT; diff --git a/kernel/hrtimer.c b/kernel/hrtimer.c index 1decafbb6b1a..72206cf5c6cf 100644 --- a/kernel/hrtimer.c +++ b/kernel/hrtimer.c @@ -931,6 +931,7 @@ static inline int remove_hrtimer(struct hrtimer *timer, struct hrtimer_clock_base *base) { if (hrtimer_is_queued(timer)) { + unsigned long state; int reprogram; /* @@ -944,8 +945,13 @@ remove_hrtimer(struct hrtimer *timer, struct hrtimer_clock_base *base) debug_deactivate(timer); timer_stats_hrtimer_clear_start_info(timer); reprogram = base->cpu_base == &__get_cpu_var(hrtimer_bases); - __remove_hrtimer(timer, base, HRTIMER_STATE_INACTIVE, - reprogram); + /* + * We must preserve the CALLBACK state flag here, + * otherwise we could move the timer base in + * switch_hrtimer_base. + */ + state = timer->state & HRTIMER_STATE_CALLBACK; + __remove_hrtimer(timer, base, state, reprogram); return 1; } return 0; @@ -1231,6 +1237,9 @@ static void __run_hrtimer(struct hrtimer *timer, ktime_t *now) BUG_ON(timer->state != HRTIMER_STATE_CALLBACK); enqueue_hrtimer(timer, base); } + + WARN_ON_ONCE(!(timer->state & HRTIMER_STATE_CALLBACK)); + timer->state &= ~HRTIMER_STATE_CALLBACK; } diff --git a/kernel/hung_task.c b/kernel/hung_task.c index 0c642d51aac2..53ead174da2f 100644 --- a/kernel/hung_task.c +++ b/kernel/hung_task.c @@ -98,7 +98,7 @@ static void check_hung_task(struct task_struct *t, unsigned long timeout) printk(KERN_ERR "\"echo 0 > /proc/sys/kernel/hung_task_timeout_secs\"" " disables this message.\n"); sched_show_task(t); - __debug_show_held_locks(t); + debug_show_held_locks(t); touch_nmi_watchdog(); @@ -111,7 +111,7 @@ static void check_hung_task(struct task_struct *t, unsigned long timeout) * periodically exit the critical section and enter a new one. * * For preemptible RCU it is sufficient to call rcu_read_unlock in order - * exit the grace period. For classic RCU, a reschedule is required. + * to exit the grace period. For classic RCU, a reschedule is required. */ static void rcu_lock_break(struct task_struct *g, struct task_struct *t) { diff --git a/kernel/hw_breakpoint.c b/kernel/hw_breakpoint.c index c7c2aed9e2dc..2c9120f0afca 100644 --- a/kernel/hw_breakpoint.c +++ b/kernel/hw_breakpoint.c @@ -113,12 +113,12 @@ static unsigned int max_task_bp_pinned(int cpu, enum bp_type_idx type) */ static int task_bp_pinned(struct perf_event *bp, enum bp_type_idx type) { - struct perf_event_context *ctx = bp->ctx; + struct task_struct *tsk = bp->hw.bp_target; struct perf_event *iter; int count = 0; list_for_each_entry(iter, &bp_task_head, hw.bp_list) { - if (iter->ctx == ctx && find_slot_idx(iter) == type) + if (iter->hw.bp_target == tsk && find_slot_idx(iter) == type) count += hw_breakpoint_weight(iter); } @@ -134,7 +134,7 @@ fetch_bp_busy_slots(struct bp_busy_slots *slots, struct perf_event *bp, enum bp_type_idx type) { int cpu = bp->cpu; - struct task_struct *tsk = bp->ctx->task; + struct task_struct *tsk = bp->hw.bp_target; if (cpu >= 0) { slots->pinned = per_cpu(nr_cpu_bp_pinned[type], cpu); @@ -213,7 +213,7 @@ toggle_bp_slot(struct perf_event *bp, bool enable, enum bp_type_idx type, int weight) { int cpu = bp->cpu; - struct task_struct *tsk = bp->ctx->task; + struct task_struct *tsk = bp->hw.bp_target; /* Pinned counter cpu profiling */ if (!tsk) { @@ -433,8 +433,7 @@ register_user_hw_breakpoint(struct perf_event_attr *attr, perf_overflow_handler_t triggered, struct task_struct *tsk) { - return perf_event_create_kernel_counter(attr, -1, task_pid_vnr(tsk), - triggered); + return perf_event_create_kernel_counter(attr, -1, tsk, triggered); } EXPORT_SYMBOL_GPL(register_user_hw_breakpoint); @@ -516,7 +515,7 @@ register_wide_hw_breakpoint(struct perf_event_attr *attr, get_online_cpus(); for_each_online_cpu(cpu) { pevent = per_cpu_ptr(cpu_events, cpu); - bp = perf_event_create_kernel_counter(attr, cpu, -1, triggered); + bp = perf_event_create_kernel_counter(attr, cpu, NULL, triggered); *pevent = bp; @@ -566,6 +565,61 @@ static struct notifier_block hw_breakpoint_exceptions_nb = { .priority = 0x7fffffff }; +static void bp_perf_event_destroy(struct perf_event *event) +{ + release_bp_slot(event); +} + +static int hw_breakpoint_event_init(struct perf_event *bp) +{ + int err; + + if (bp->attr.type != PERF_TYPE_BREAKPOINT) + return -ENOENT; + + err = register_perf_hw_breakpoint(bp); + if (err) + return err; + + bp->destroy = bp_perf_event_destroy; + + return 0; +} + +static int hw_breakpoint_add(struct perf_event *bp, int flags) +{ + if (!(flags & PERF_EF_START)) + bp->hw.state = PERF_HES_STOPPED; + + return arch_install_hw_breakpoint(bp); +} + +static void hw_breakpoint_del(struct perf_event *bp, int flags) +{ + arch_uninstall_hw_breakpoint(bp); +} + +static void hw_breakpoint_start(struct perf_event *bp, int flags) +{ + bp->hw.state = 0; +} + +static void hw_breakpoint_stop(struct perf_event *bp, int flags) +{ + bp->hw.state = PERF_HES_STOPPED; +} + +static struct pmu perf_breakpoint = { + .task_ctx_nr = perf_sw_context, /* could eventually get its own */ + + .event_init = hw_breakpoint_event_init, + .add = hw_breakpoint_add, + .del = hw_breakpoint_del, + .start = hw_breakpoint_start, + .stop = hw_breakpoint_stop, + .read = hw_breakpoint_pmu_read, +}; + static int __init init_hw_breakpoint(void) { unsigned int **task_bp_pinned; @@ -587,6 +641,8 @@ static int __init init_hw_breakpoint(void) constraints_initialized = 1; + perf_pmu_register(&perf_breakpoint); + return register_die_notifier(&hw_breakpoint_exceptions_nb); err_alloc: @@ -602,8 +658,3 @@ static int __init init_hw_breakpoint(void) core_initcall(init_hw_breakpoint); -struct pmu perf_ops_bp = { - .enable = arch_install_hw_breakpoint, - .disable = arch_uninstall_hw_breakpoint, - .read = hw_breakpoint_pmu_read, -}; diff --git a/kernel/irq/Kconfig b/kernel/irq/Kconfig new file mode 100644 index 000000000000..31d766bf5d2e --- /dev/null +++ b/kernel/irq/Kconfig @@ -0,0 +1,53 @@ +config HAVE_GENERIC_HARDIRQS + def_bool n + +if HAVE_GENERIC_HARDIRQS +menu "IRQ subsystem" +# +# Interrupt subsystem related configuration options +# +config GENERIC_HARDIRQS + def_bool y + +config GENERIC_HARDIRQS_NO__DO_IRQ + def_bool y + +# Select this to disable the deprecated stuff +config GENERIC_HARDIRQS_NO_DEPRECATED + def_bool n + +# Options selectable by the architecture code +config HAVE_SPARSE_IRQ + def_bool n + +config GENERIC_IRQ_PROBE + def_bool n + +config GENERIC_PENDING_IRQ + def_bool n + +config AUTO_IRQ_AFFINITY + def_bool n + +config IRQ_PER_CPU + def_bool n + +config HARDIRQS_SW_RESEND + def_bool n + +config SPARSE_IRQ + bool "Support sparse irq numbering" + depends on HAVE_SPARSE_IRQ + ---help--- + + Sparse irq numbering is useful for distro kernels that want + to define a high CONFIG_NR_CPUS value but still want to have + low kernel memory footprint on smaller machines. + + ( Sparse irqs can also be beneficial on NUMA boxes, as they spread + out the interrupt descriptors in a more NUMA-friendly way. ) + + If you don't know what to do here, say N. + +endmenu +endif diff --git a/kernel/irq/Makefile b/kernel/irq/Makefile index 7d047808419d..54329cd7b3ee 100644 --- a/kernel/irq/Makefile +++ b/kernel/irq/Makefile @@ -1,7 +1,6 @@ -obj-y := handle.o manage.o spurious.o resend.o chip.o devres.o +obj-y := irqdesc.o handle.o manage.o spurious.o resend.o chip.o dummychip.o devres.o obj-$(CONFIG_GENERIC_IRQ_PROBE) += autoprobe.o obj-$(CONFIG_PROC_FS) += proc.o obj-$(CONFIG_GENERIC_PENDING_IRQ) += migration.o -obj-$(CONFIG_NUMA_IRQ_DESC) += numa_migrate.o obj-$(CONFIG_PM_SLEEP) += pm.o diff --git a/kernel/irq/autoprobe.c b/kernel/irq/autoprobe.c index 2295a31ef110..505798f86c36 100644 --- a/kernel/irq/autoprobe.c +++ b/kernel/irq/autoprobe.c @@ -57,9 +57,10 @@ unsigned long probe_irq_on(void) * Some chips need to know about probing in * progress: */ - if (desc->chip->set_type) - desc->chip->set_type(i, IRQ_TYPE_PROBE); - desc->chip->startup(i); + if (desc->irq_data.chip->irq_set_type) + desc->irq_data.chip->irq_set_type(&desc->irq_data, + IRQ_TYPE_PROBE); + desc->irq_data.chip->irq_startup(&desc->irq_data); } raw_spin_unlock_irq(&desc->lock); } @@ -76,7 +77,7 @@ unsigned long probe_irq_on(void) raw_spin_lock_irq(&desc->lock); if (!desc->action && !(desc->status & IRQ_NOPROBE)) { desc->status |= IRQ_AUTODETECT | IRQ_WAITING; - if (desc->chip->startup(i)) + if (desc->irq_data.chip->irq_startup(&desc->irq_data)) desc->status |= IRQ_PENDING; } raw_spin_unlock_irq(&desc->lock); @@ -98,7 +99,7 @@ unsigned long probe_irq_on(void) /* It triggered already - consider it spurious. */ if (!(status & IRQ_WAITING)) { desc->status = status & ~IRQ_AUTODETECT; - desc->chip->shutdown(i); + desc->irq_data.chip->irq_shutdown(&desc->irq_data); } else if (i < 32) mask |= 1 << i; @@ -137,7 +138,7 @@ unsigned int probe_irq_mask(unsigned long val) mask |= 1 << i; desc->status = status & ~IRQ_AUTODETECT; - desc->chip->shutdown(i); + desc->irq_data.chip->irq_shutdown(&desc->irq_data); } raw_spin_unlock_irq(&desc->lock); } @@ -181,7 +182,7 @@ int probe_irq_off(unsigned long val) nr_of_irqs++; } desc->status = status & ~IRQ_AUTODETECT; - desc->chip->shutdown(i); + desc->irq_data.chip->irq_shutdown(&desc->irq_data); } raw_spin_unlock_irq(&desc->lock); } diff --git a/kernel/irq/chip.c b/kernel/irq/chip.c index b7091d5ca2f8..baa5c4acad83 100644 --- a/kernel/irq/chip.c +++ b/kernel/irq/chip.c @@ -18,108 +18,6 @@ #include "internals.h" -static void dynamic_irq_init_x(unsigned int irq, bool keep_chip_data) -{ - struct irq_desc *desc; - unsigned long flags; - - desc = irq_to_desc(irq); - if (!desc) { - WARN(1, KERN_ERR "Trying to initialize invalid IRQ%d\n", irq); - return; - } - - /* Ensure we don't have left over values from a previous use of this irq */ - raw_spin_lock_irqsave(&desc->lock, flags); - desc->status = IRQ_DISABLED; - desc->chip = &no_irq_chip; - desc->handle_irq = handle_bad_irq; - desc->depth = 1; - desc->msi_desc = NULL; - desc->handler_data = NULL; - if (!keep_chip_data) - desc->chip_data = NULL; - desc->action = NULL; - desc->irq_count = 0; - desc->irqs_unhandled = 0; -#ifdef CONFIG_SMP - cpumask_setall(desc->affinity); -#ifdef CONFIG_GENERIC_PENDING_IRQ - cpumask_clear(desc->pending_mask); -#endif -#endif - raw_spin_unlock_irqrestore(&desc->lock, flags); -} - -/** - * dynamic_irq_init - initialize a dynamically allocated irq - * @irq: irq number to initialize - */ -void dynamic_irq_init(unsigned int irq) -{ - dynamic_irq_init_x(irq, false); -} - -/** - * dynamic_irq_init_keep_chip_data - initialize a dynamically allocated irq - * @irq: irq number to initialize - * - * does not set irq_to_desc(irq)->chip_data to NULL - */ -void dynamic_irq_init_keep_chip_data(unsigned int irq) -{ - dynamic_irq_init_x(irq, true); -} - -static void dynamic_irq_cleanup_x(unsigned int irq, bool keep_chip_data) -{ - struct irq_desc *desc = irq_to_desc(irq); - unsigned long flags; - - if (!desc) { - WARN(1, KERN_ERR "Trying to cleanup invalid IRQ%d\n", irq); - return; - } - - raw_spin_lock_irqsave(&desc->lock, flags); - if (desc->action) { - raw_spin_unlock_irqrestore(&desc->lock, flags); - WARN(1, KERN_ERR "Destroying IRQ%d without calling free_irq\n", - irq); - return; - } - desc->msi_desc = NULL; - desc->handler_data = NULL; - if (!keep_chip_data) - desc->chip_data = NULL; - desc->handle_irq = handle_bad_irq; - desc->chip = &no_irq_chip; - desc->name = NULL; - clear_kstat_irqs(desc); - raw_spin_unlock_irqrestore(&desc->lock, flags); -} - -/** - * dynamic_irq_cleanup - cleanup a dynamically allocated irq - * @irq: irq number to initialize - */ -void dynamic_irq_cleanup(unsigned int irq) -{ - dynamic_irq_cleanup_x(irq, false); -} - -/** - * dynamic_irq_cleanup_keep_chip_data - cleanup a dynamically allocated irq - * @irq: irq number to initialize - * - * does not set irq_to_desc(irq)->chip_data to NULL - */ -void dynamic_irq_cleanup_keep_chip_data(unsigned int irq) -{ - dynamic_irq_cleanup_x(irq, true); -} - - /** * set_irq_chip - set the irq chip for an irq * @irq: irq number @@ -140,7 +38,7 @@ int set_irq_chip(unsigned int irq, struct irq_chip *chip) raw_spin_lock_irqsave(&desc->lock, flags); irq_chip_set_defaults(chip); - desc->chip = chip; + desc->irq_data.chip = chip; raw_spin_unlock_irqrestore(&desc->lock, flags); return 0; @@ -193,7 +91,7 @@ int set_irq_data(unsigned int irq, void *data) } raw_spin_lock_irqsave(&desc->lock, flags); - desc->handler_data = data; + desc->irq_data.handler_data = data; raw_spin_unlock_irqrestore(&desc->lock, flags); return 0; } @@ -218,7 +116,7 @@ int set_irq_msi(unsigned int irq, struct msi_desc *entry) } raw_spin_lock_irqsave(&desc->lock, flags); - desc->msi_desc = entry; + desc->irq_data.msi_desc = entry; if (entry) entry->irq = irq; raw_spin_unlock_irqrestore(&desc->lock, flags); @@ -243,19 +141,27 @@ int set_irq_chip_data(unsigned int irq, void *data) return -EINVAL; } - if (!desc->chip) { + if (!desc->irq_data.chip) { printk(KERN_ERR "BUG: bad set_irq_chip_data(IRQ#%d)\n", irq); return -EINVAL; } raw_spin_lock_irqsave(&desc->lock, flags); - desc->chip_data = data; + desc->irq_data.chip_data = data; raw_spin_unlock_irqrestore(&desc->lock, flags); return 0; } EXPORT_SYMBOL(set_irq_chip_data); +struct irq_data *irq_get_irq_data(unsigned int irq) +{ + struct irq_desc *desc = irq_to_desc(irq); + + return desc ? &desc->irq_data : NULL; +} +EXPORT_SYMBOL_GPL(irq_get_irq_data); + /** * set_irq_nested_thread - Set/Reset the IRQ_NESTED_THREAD flag of an irq * @@ -287,93 +193,216 @@ EXPORT_SYMBOL_GPL(set_irq_nested_thread); /* * default enable function */ -static void default_enable(unsigned int irq) +static void default_enable(struct irq_data *data) { - struct irq_desc *desc = irq_to_desc(irq); + struct irq_desc *desc = irq_data_to_desc(data); - desc->chip->unmask(irq); + desc->irq_data.chip->irq_unmask(&desc->irq_data); desc->status &= ~IRQ_MASKED; } /* * default disable function */ -static void default_disable(unsigned int irq) +static void default_disable(struct irq_data *data) { } /* * default startup function */ -static unsigned int default_startup(unsigned int irq) +static unsigned int default_startup(struct irq_data *data) { - struct irq_desc *desc = irq_to_desc(irq); + struct irq_desc *desc = irq_data_to_desc(data); - desc->chip->enable(irq); + desc->irq_data.chip->irq_enable(data); return 0; } /* * default shutdown function */ -static void default_shutdown(unsigned int irq) +static void default_shutdown(struct irq_data *data) { - struct irq_desc *desc = irq_to_desc(irq); + struct irq_desc *desc = irq_data_to_desc(data); - desc->chip->mask(irq); + desc->irq_data.chip->irq_mask(&desc->irq_data); desc->status |= IRQ_MASKED; } +#ifndef CONFIG_GENERIC_HARDIRQS_NO_DEPRECATED +/* Temporary migration helpers */ +static void compat_irq_mask(struct irq_data *data) +{ + data->chip->mask(data->irq); +} + +static void compat_irq_unmask(struct irq_data *data) +{ + data->chip->unmask(data->irq); +} + +static void compat_irq_ack(struct irq_data *data) +{ + data->chip->ack(data->irq); +} + +static void compat_irq_mask_ack(struct irq_data *data) +{ + data->chip->mask_ack(data->irq); +} + +static void compat_irq_eoi(struct irq_data *data) +{ + data->chip->eoi(data->irq); +} + +static void compat_irq_enable(struct irq_data *data) +{ + data->chip->enable(data->irq); +} + +static void compat_irq_disable(struct irq_data *data) +{ + data->chip->disable(data->irq); +} + +static void compat_irq_shutdown(struct irq_data *data) +{ + data->chip->shutdown(data->irq); +} + +static unsigned int compat_irq_startup(struct irq_data *data) +{ + return data->chip->startup(data->irq); +} + +static int compat_irq_set_affinity(struct irq_data *data, + const struct cpumask *dest, bool force) +{ + return data->chip->set_affinity(data->irq, dest); +} + +static int compat_irq_set_type(struct irq_data *data, unsigned int type) +{ + return data->chip->set_type(data->irq, type); +} + +static int compat_irq_set_wake(struct irq_data *data, unsigned int on) +{ + return data->chip->set_wake(data->irq, on); +} + +static int compat_irq_retrigger(struct irq_data *data) +{ + return data->chip->retrigger(data->irq); +} + +static void compat_bus_lock(struct irq_data *data) +{ + data->chip->bus_lock(data->irq); +} + +static void compat_bus_sync_unlock(struct irq_data *data) +{ + data->chip->bus_sync_unlock(data->irq); +} +#endif + /* * Fixup enable/disable function pointers */ void irq_chip_set_defaults(struct irq_chip *chip) { - if (!chip->enable) - chip->enable = default_enable; - if (!chip->disable) - chip->disable = default_disable; - if (!chip->startup) - chip->startup = default_startup; +#ifndef CONFIG_GENERIC_HARDIRQS_NO_DEPRECATED /* - * We use chip->disable, when the user provided its own. When - * we have default_disable set for chip->disable, then we need + * Compat fixup functions need to be before we set the + * defaults for enable/disable/startup/shutdown + */ + if (chip->enable) + chip->irq_enable = compat_irq_enable; + if (chip->disable) + chip->irq_disable = compat_irq_disable; + if (chip->shutdown) + chip->irq_shutdown = compat_irq_shutdown; + if (chip->startup) + chip->irq_startup = compat_irq_startup; +#endif + /* + * The real defaults + */ + if (!chip->irq_enable) + chip->irq_enable = default_enable; + if (!chip->irq_disable) + chip->irq_disable = default_disable; + if (!chip->irq_startup) + chip->irq_startup = default_startup; + /* + * We use chip->irq_disable, when the user provided its own. When + * we have default_disable set for chip->irq_disable, then we need * to use default_shutdown, otherwise the irq line is not * disabled on free_irq(): */ - if (!chip->shutdown) - chip->shutdown = chip->disable != default_disable ? - chip->disable : default_shutdown; - if (!chip->name) - chip->name = chip->typename; + if (!chip->irq_shutdown) + chip->irq_shutdown = chip->irq_disable != default_disable ? + chip->irq_disable : default_shutdown; + +#ifndef CONFIG_GENERIC_HARDIRQS_NO_DEPRECATED if (!chip->end) chip->end = dummy_irq_chip.end; + + /* + * Now fix up the remaining compat handlers + */ + if (chip->bus_lock) + chip->irq_bus_lock = compat_bus_lock; + if (chip->bus_sync_unlock) + chip->irq_bus_sync_unlock = compat_bus_sync_unlock; + if (chip->mask) + chip->irq_mask = compat_irq_mask; + if (chip->unmask) + chip->irq_unmask = compat_irq_unmask; + if (chip->ack) + chip->irq_ack = compat_irq_ack; + if (chip->mask_ack) + chip->irq_mask_ack = compat_irq_mask_ack; + if (chip->eoi) + chip->irq_eoi = compat_irq_eoi; + if (chip->set_affinity) + chip->irq_set_affinity = compat_irq_set_affinity; + if (chip->set_type) + chip->irq_set_type = compat_irq_set_type; + if (chip->set_wake) + chip->irq_set_wake = compat_irq_set_wake; + if (chip->retrigger) + chip->irq_retrigger = compat_irq_retrigger; +#endif } -static inline void mask_ack_irq(struct irq_desc *desc, int irq) +static inline void mask_ack_irq(struct irq_desc *desc) { - if (desc->chip->mask_ack) - desc->chip->mask_ack(irq); + if (desc->irq_data.chip->irq_mask_ack) + desc->irq_data.chip->irq_mask_ack(&desc->irq_data); else { - desc->chip->mask(irq); - if (desc->chip->ack) - desc->chip->ack(irq); + desc->irq_data.chip->irq_mask(&desc->irq_data); + if (desc->irq_data.chip->irq_ack) + desc->irq_data.chip->irq_ack(&desc->irq_data); } desc->status |= IRQ_MASKED; } -static inline void mask_irq(struct irq_desc *desc, int irq) +static inline void mask_irq(struct irq_desc *desc) { - if (desc->chip->mask) { - desc->chip->mask(irq); + if (desc->irq_data.chip->irq_mask) { + desc->irq_data.chip->irq_mask(&desc->irq_data); desc->status |= IRQ_MASKED; } } -static inline void unmask_irq(struct irq_desc *desc, int irq) +static inline void unmask_irq(struct irq_desc *desc) { - if (desc->chip->unmask) { - desc->chip->unmask(irq); + if (desc->irq_data.chip->irq_unmask) { + desc->irq_data.chip->irq_unmask(&desc->irq_data); desc->status &= ~IRQ_MASKED; } } @@ -476,7 +505,7 @@ handle_level_irq(unsigned int irq, struct irq_desc *desc) irqreturn_t action_ret; raw_spin_lock(&desc->lock); - mask_ack_irq(desc, irq); + mask_ack_irq(desc); if (unlikely(desc->status & IRQ_INPROGRESS)) goto out_unlock; @@ -502,7 +531,7 @@ handle_level_irq(unsigned int irq, struct irq_desc *desc) desc->status &= ~IRQ_INPROGRESS; if (!(desc->status & (IRQ_DISABLED | IRQ_ONESHOT))) - unmask_irq(desc, irq); + unmask_irq(desc); out_unlock: raw_spin_unlock(&desc->lock); } @@ -539,7 +568,7 @@ handle_fasteoi_irq(unsigned int irq, struct irq_desc *desc) action = desc->action; if (unlikely(!action || (desc->status & IRQ_DISABLED))) { desc->status |= IRQ_PENDING; - mask_irq(desc, irq); + mask_irq(desc); goto out; } @@ -554,7 +583,7 @@ handle_fasteoi_irq(unsigned int irq, struct irq_desc *desc) raw_spin_lock(&desc->lock); desc->status &= ~IRQ_INPROGRESS; out: - desc->chip->eoi(irq); + desc->irq_data.chip->irq_eoi(&desc->irq_data); raw_spin_unlock(&desc->lock); } @@ -590,14 +619,13 @@ handle_edge_irq(unsigned int irq, struct irq_desc *desc) if (unlikely((desc->status & (IRQ_INPROGRESS | IRQ_DISABLED)) || !desc->action)) { desc->status |= (IRQ_PENDING | IRQ_MASKED); - mask_ack_irq(desc, irq); + mask_ack_irq(desc); goto out_unlock; } kstat_incr_irqs_this_cpu(irq, desc); /* Start handling the irq */ - if (desc->chip->ack) - desc->chip->ack(irq); + desc->irq_data.chip->irq_ack(&desc->irq_data); /* Mark the IRQ currently in progress.*/ desc->status |= IRQ_INPROGRESS; @@ -607,7 +635,7 @@ handle_edge_irq(unsigned int irq, struct irq_desc *desc) irqreturn_t action_ret; if (unlikely(!action)) { - mask_irq(desc, irq); + mask_irq(desc); goto out_unlock; } @@ -619,7 +647,7 @@ handle_edge_irq(unsigned int irq, struct irq_desc *desc) if (unlikely((desc->status & (IRQ_PENDING | IRQ_MASKED | IRQ_DISABLED)) == (IRQ_PENDING | IRQ_MASKED))) { - unmask_irq(desc, irq); + unmask_irq(desc); } desc->status &= ~IRQ_PENDING; @@ -650,15 +678,15 @@ handle_percpu_irq(unsigned int irq, struct irq_desc *desc) kstat_incr_irqs_this_cpu(irq, desc); - if (desc->chip->ack) - desc->chip->ack(irq); + if (desc->irq_data.chip->irq_ack) + desc->irq_data.chip->irq_ack(&desc->irq_data); action_ret = handle_IRQ_event(irq, desc->action); if (!noirqdebug) note_interrupt(irq, desc, action_ret); - if (desc->chip->eoi) - desc->chip->eoi(irq); + if (desc->irq_data.chip->irq_eoi) + desc->irq_data.chip->irq_eoi(&desc->irq_data); } void @@ -676,7 +704,7 @@ __set_irq_handler(unsigned int irq, irq_flow_handler_t handle, int is_chained, if (!handle) handle = handle_bad_irq; - else if (desc->chip == &no_irq_chip) { + else if (desc->irq_data.chip == &no_irq_chip) { printk(KERN_WARNING "Trying to install %sinterrupt handler " "for IRQ%d\n", is_chained ? "chained " : "", irq); /* @@ -686,16 +714,16 @@ __set_irq_handler(unsigned int irq, irq_flow_handler_t handle, int is_chained, * prevent us to setup the interrupt at all. Switch it to * dummy_irq_chip for easy transition. */ - desc->chip = &dummy_irq_chip; + desc->irq_data.chip = &dummy_irq_chip; } - chip_bus_lock(irq, desc); + chip_bus_lock(desc); raw_spin_lock_irqsave(&desc->lock, flags); /* Uninstall? */ if (handle == handle_bad_irq) { - if (desc->chip != &no_irq_chip) - mask_ack_irq(desc, irq); + if (desc->irq_data.chip != &no_irq_chip) + mask_ack_irq(desc); desc->status |= IRQ_DISABLED; desc->depth = 1; } @@ -706,10 +734,10 @@ __set_irq_handler(unsigned int irq, irq_flow_handler_t handle, int is_chained, desc->status &= ~IRQ_DISABLED; desc->status |= IRQ_NOREQUEST | IRQ_NOPROBE; desc->depth = 0; - desc->chip->startup(irq); + desc->irq_data.chip->irq_startup(&desc->irq_data); } raw_spin_unlock_irqrestore(&desc->lock, flags); - chip_bus_sync_unlock(irq, desc); + chip_bus_sync_unlock(desc); } EXPORT_SYMBOL_GPL(__set_irq_handler); @@ -729,32 +757,20 @@ set_irq_chip_and_handler_name(unsigned int irq, struct irq_chip *chip, __set_irq_handler(irq, handle, 0, name); } -void set_irq_noprobe(unsigned int irq) +void irq_modify_status(unsigned int irq, unsigned long clr, unsigned long set) { struct irq_desc *desc = irq_to_desc(irq); unsigned long flags; - if (!desc) { - printk(KERN_ERR "Trying to mark IRQ%d non-probeable\n", irq); + if (!desc) return; - } - - raw_spin_lock_irqsave(&desc->lock, flags); - desc->status |= IRQ_NOPROBE; - raw_spin_unlock_irqrestore(&desc->lock, flags); -} - -void set_irq_probe(unsigned int irq) -{ - struct irq_desc *desc = irq_to_desc(irq); - unsigned long flags; - if (!desc) { - printk(KERN_ERR "Trying to mark IRQ%d probeable\n", irq); - return; - } + /* Sanitize flags */ + set &= IRQF_MODIFY_MASK; + clr &= IRQF_MODIFY_MASK; raw_spin_lock_irqsave(&desc->lock, flags); - desc->status &= ~IRQ_NOPROBE; + desc->status &= ~clr; + desc->status |= set; raw_spin_unlock_irqrestore(&desc->lock, flags); } diff --git a/kernel/irq/dummychip.c b/kernel/irq/dummychip.c new file mode 100644 index 000000000000..20dc5474947e --- /dev/null +++ b/kernel/irq/dummychip.c @@ -0,0 +1,68 @@ +/* + * Copyright (C) 1992, 1998-2006 Linus Torvalds, Ingo Molnar + * Copyright (C) 2005-2006, Thomas Gleixner, Russell King + * + * This file contains the dummy interrupt chip implementation + */ +#include <linux/interrupt.h> +#include <linux/irq.h> + +#include "internals.h" + +/* + * What should we do if we get a hw irq event on an illegal vector? + * Each architecture has to answer this themself. + */ +static void ack_bad(struct irq_data *data) +{ + struct irq_desc *desc = irq_data_to_desc(data); + + print_irq_desc(data->irq, desc); + ack_bad_irq(data->irq); +} + +/* + * NOP functions + */ +static void noop(struct irq_data *data) { } + +static unsigned int noop_ret(struct irq_data *data) +{ + return 0; +} + +#ifndef CONFIG_GENERIC_HARDIRQS_NO_DEPRECATED +static void compat_noop(unsigned int irq) { } +#define END_INIT .end = compat_noop +#else +#define END_INIT +#endif + +/* + * Generic no controller implementation + */ +struct irq_chip no_irq_chip = { + .name = "none", + .irq_startup = noop_ret, + .irq_shutdown = noop, + .irq_enable = noop, + .irq_disable = noop, + .irq_ack = ack_bad, + END_INIT +}; + +/* + * Generic dummy implementation which can be used for + * real dumb interrupt sources + */ +struct irq_chip dummy_irq_chip = { + .name = "dummy", + .irq_startup = noop_ret, + .irq_shutdown = noop, + .irq_enable = noop, + .irq_disable = noop, + .irq_ack = noop, + .irq_mask = noop, + .irq_unmask = noop, + END_INIT +}; diff --git a/kernel/irq/handle.c b/kernel/irq/handle.c index 27e5c6911223..e2347eb63306 100644 --- a/kernel/irq/handle.c +++ b/kernel/irq/handle.c @@ -11,24 +11,15 @@ */ #include <linux/irq.h> -#include <linux/sched.h> -#include <linux/slab.h> -#include <linux/module.h> #include <linux/random.h> +#include <linux/sched.h> #include <linux/interrupt.h> #include <linux/kernel_stat.h> -#include <linux/rculist.h> -#include <linux/hash.h> -#include <linux/radix-tree.h> + #include <trace/events/irq.h> #include "internals.h" -/* - * lockdep: we want to handle all irq_desc locks as a single lock-class: - */ -struct lock_class_key irq_desc_lock_class; - /** * handle_bad_irq - handle spurious and unhandled irqs * @irq: the interrupt number @@ -43,304 +34,6 @@ void handle_bad_irq(unsigned int irq, struct irq_desc *desc) ack_bad_irq(irq); } -#if defined(CONFIG_SMP) && defined(CONFIG_GENERIC_HARDIRQS) -static void __init init_irq_default_affinity(void) -{ - alloc_cpumask_var(&irq_default_affinity, GFP_NOWAIT); - cpumask_setall(irq_default_affinity); -} -#else -static void __init init_irq_default_affinity(void) -{ -} -#endif - -/* - * Linux has a controller-independent interrupt architecture. - * Every controller has a 'controller-template', that is used - * by the main code to do the right thing. Each driver-visible - * interrupt source is transparently wired to the appropriate - * controller. Thus drivers need not be aware of the - * interrupt-controller. - * - * The code is designed to be easily extended with new/different - * interrupt controllers, without having to do assembly magic or - * having to touch the generic code. - * - * Controller mappings for all interrupt sources: - */ -int nr_irqs = NR_IRQS; -EXPORT_SYMBOL_GPL(nr_irqs); - -#ifdef CONFIG_SPARSE_IRQ - -static struct irq_desc irq_desc_init = { - .irq = -1, - .status = IRQ_DISABLED, - .chip = &no_irq_chip, - .handle_irq = handle_bad_irq, - .depth = 1, - .lock = __RAW_SPIN_LOCK_UNLOCKED(irq_desc_init.lock), -}; - -void __ref init_kstat_irqs(struct irq_desc *desc, int node, int nr) -{ - void *ptr; - - ptr = kzalloc_node(nr * sizeof(*desc->kstat_irqs), - GFP_ATOMIC, node); - - /* - * don't overwite if can not get new one - * init_copy_kstat_irqs() could still use old one - */ - if (ptr) { - printk(KERN_DEBUG " alloc kstat_irqs on node %d\n", node); - desc->kstat_irqs = ptr; - } -} - -static void init_one_irq_desc(int irq, struct irq_desc *desc, int node) -{ - memcpy(desc, &irq_desc_init, sizeof(struct irq_desc)); - - raw_spin_lock_init(&desc->lock); - desc->irq = irq; -#ifdef CONFIG_SMP - desc->node = node; -#endif - lockdep_set_class(&desc->lock, &irq_desc_lock_class); - init_kstat_irqs(desc, node, nr_cpu_ids); - if (!desc->kstat_irqs) { - printk(KERN_ERR "can not alloc kstat_irqs\n"); - BUG_ON(1); - } - if (!alloc_desc_masks(desc, node, false)) { - printk(KERN_ERR "can not alloc irq_desc cpumasks\n"); - BUG_ON(1); - } - init_desc_masks(desc); - arch_init_chip_data(desc, node); -} - -/* - * Protect the sparse_irqs: - */ -DEFINE_RAW_SPINLOCK(sparse_irq_lock); - -static RADIX_TREE(irq_desc_tree, GFP_ATOMIC); - -static void set_irq_desc(unsigned int irq, struct irq_desc *desc) -{ - radix_tree_insert(&irq_desc_tree, irq, desc); -} - -struct irq_desc *irq_to_desc(unsigned int irq) -{ - return radix_tree_lookup(&irq_desc_tree, irq); -} - -void replace_irq_desc(unsigned int irq, struct irq_desc *desc) -{ - void **ptr; - - ptr = radix_tree_lookup_slot(&irq_desc_tree, irq); - if (ptr) - radix_tree_replace_slot(ptr, desc); -} - -static struct irq_desc irq_desc_legacy[NR_IRQS_LEGACY] __cacheline_aligned_in_smp = { - [0 ... NR_IRQS_LEGACY-1] = { - .irq = -1, - .status = IRQ_DISABLED, - .chip = &no_irq_chip, - .handle_irq = handle_bad_irq, - .depth = 1, - .lock = __RAW_SPIN_LOCK_UNLOCKED(irq_desc_init.lock), - } -}; - -static unsigned int *kstat_irqs_legacy; - -int __init early_irq_init(void) -{ - struct irq_desc *desc; - int legacy_count; - int node; - int i; - - init_irq_default_affinity(); - - /* initialize nr_irqs based on nr_cpu_ids */ - arch_probe_nr_irqs(); - printk(KERN_INFO "NR_IRQS:%d nr_irqs:%d\n", NR_IRQS, nr_irqs); - - desc = irq_desc_legacy; - legacy_count = ARRAY_SIZE(irq_desc_legacy); - node = first_online_node; - - /* allocate based on nr_cpu_ids */ - kstat_irqs_legacy = kzalloc_node(NR_IRQS_LEGACY * nr_cpu_ids * - sizeof(int), GFP_NOWAIT, node); - - for (i = 0; i < legacy_count; i++) { - desc[i].irq = i; -#ifdef CONFIG_SMP - desc[i].node = node; -#endif - desc[i].kstat_irqs = kstat_irqs_legacy + i * nr_cpu_ids; - lockdep_set_class(&desc[i].lock, &irq_desc_lock_class); - alloc_desc_masks(&desc[i], node, true); - init_desc_masks(&desc[i]); - set_irq_desc(i, &desc[i]); - } - - return arch_early_irq_init(); -} - -struct irq_desc * __ref irq_to_desc_alloc_node(unsigned int irq, int node) -{ - struct irq_desc *desc; - unsigned long flags; - - if (irq >= nr_irqs) { - WARN(1, "irq (%d) >= nr_irqs (%d) in irq_to_desc_alloc\n", - irq, nr_irqs); - return NULL; - } - - desc = irq_to_desc(irq); - if (desc) - return desc; - - raw_spin_lock_irqsave(&sparse_irq_lock, flags); - - /* We have to check it to avoid races with another CPU */ - desc = irq_to_desc(irq); - if (desc) - goto out_unlock; - - desc = kzalloc_node(sizeof(*desc), GFP_ATOMIC, node); - - printk(KERN_DEBUG " alloc irq_desc for %d on node %d\n", irq, node); - if (!desc) { - printk(KERN_ERR "can not alloc irq_desc\n"); - BUG_ON(1); - } - init_one_irq_desc(irq, desc, node); - - set_irq_desc(irq, desc); - -out_unlock: - raw_spin_unlock_irqrestore(&sparse_irq_lock, flags); - - return desc; -} - -#else /* !CONFIG_SPARSE_IRQ */ - -struct irq_desc irq_desc[NR_IRQS] __cacheline_aligned_in_smp = { - [0 ... NR_IRQS-1] = { - .status = IRQ_DISABLED, - .chip = &no_irq_chip, - .handle_irq = handle_bad_irq, - .depth = 1, - .lock = __RAW_SPIN_LOCK_UNLOCKED(irq_desc->lock), - } -}; - -static unsigned int kstat_irqs_all[NR_IRQS][NR_CPUS]; -int __init early_irq_init(void) -{ - struct irq_desc *desc; - int count; - int i; - - init_irq_default_affinity(); - - printk(KERN_INFO "NR_IRQS:%d\n", NR_IRQS); - - desc = irq_desc; - count = ARRAY_SIZE(irq_desc); - - for (i = 0; i < count; i++) { - desc[i].irq = i; - alloc_desc_masks(&desc[i], 0, true); - init_desc_masks(&desc[i]); - desc[i].kstat_irqs = kstat_irqs_all[i]; - } - return arch_early_irq_init(); -} - -struct irq_desc *irq_to_desc(unsigned int irq) -{ - return (irq < NR_IRQS) ? irq_desc + irq : NULL; -} - -struct irq_desc *irq_to_desc_alloc_node(unsigned int irq, int node) -{ - return irq_to_desc(irq); -} -#endif /* !CONFIG_SPARSE_IRQ */ - -void clear_kstat_irqs(struct irq_desc *desc) -{ - memset(desc->kstat_irqs, 0, nr_cpu_ids * sizeof(*(desc->kstat_irqs))); -} - -/* - * What should we do if we get a hw irq event on an illegal vector? - * Each architecture has to answer this themself. - */ -static void ack_bad(unsigned int irq) -{ - struct irq_desc *desc = irq_to_desc(irq); - - print_irq_desc(irq, desc); - ack_bad_irq(irq); -} - -/* - * NOP functions - */ -static void noop(unsigned int irq) -{ -} - -static unsigned int noop_ret(unsigned int irq) -{ - return 0; -} - -/* - * Generic no controller implementation - */ -struct irq_chip no_irq_chip = { - .name = "none", - .startup = noop_ret, - .shutdown = noop, - .enable = noop, - .disable = noop, - .ack = ack_bad, - .end = noop, -}; - -/* - * Generic dummy implementation which can be used for - * real dumb interrupt sources - */ -struct irq_chip dummy_irq_chip = { - .name = "dummy", - .startup = noop_ret, - .shutdown = noop, - .enable = noop, - .disable = noop, - .ack = noop, - .mask = noop, - .unmask = noop, - .end = noop, -}; - /* * Special, empty irq handler: */ @@ -457,20 +150,20 @@ unsigned int __do_IRQ(unsigned int irq) /* * No locking required for CPU-local interrupts: */ - if (desc->chip->ack) - desc->chip->ack(irq); + if (desc->irq_data.chip->ack) + desc->irq_data.chip->ack(irq); if (likely(!(desc->status & IRQ_DISABLED))) { action_ret = handle_IRQ_event(irq, desc->action); if (!noirqdebug) note_interrupt(irq, desc, action_ret); } - desc->chip->end(irq); + desc->irq_data.chip->end(irq); return 1; } raw_spin_lock(&desc->lock); - if (desc->chip->ack) - desc->chip->ack(irq); + if (desc->irq_data.chip->ack) + desc->irq_data.chip->ack(irq); /* * REPLAY is when Linux resends an IRQ that was dropped earlier * WAITING is used by probe to mark irqs that are being tested @@ -530,27 +223,9 @@ out: * The ->end() handler has to deal with interrupts which got * disabled while the handler was running. */ - desc->chip->end(irq); + desc->irq_data.chip->end(irq); raw_spin_unlock(&desc->lock); return 1; } #endif - -void early_init_irq_lock_class(void) -{ - struct irq_desc *desc; - int i; - - for_each_irq_desc(i, desc) { - lockdep_set_class(&desc->lock, &irq_desc_lock_class); - } -} - -unsigned int kstat_irqs_cpu(unsigned int irq, int cpu) -{ - struct irq_desc *desc = irq_to_desc(irq); - return desc ? desc->kstat_irqs[cpu] : 0; -} -EXPORT_SYMBOL(kstat_irqs_cpu); - diff --git a/kernel/irq/internals.h b/kernel/irq/internals.h index c63f3bc88f0b..4571ae7e085a 100644 --- a/kernel/irq/internals.h +++ b/kernel/irq/internals.h @@ -1,9 +1,12 @@ /* * IRQ subsystem internal functions and variables: */ +#include <linux/irqdesc.h> extern int noirqdebug; +#define irq_data_to_desc(data) container_of(data, struct irq_desc, irq_data) + /* Set default functions for irq_chip structures: */ extern void irq_chip_set_defaults(struct irq_chip *chip); @@ -15,21 +18,19 @@ extern int __irq_set_trigger(struct irq_desc *desc, unsigned int irq, extern void __disable_irq(struct irq_desc *desc, unsigned int irq, bool susp); extern void __enable_irq(struct irq_desc *desc, unsigned int irq, bool resume); -extern struct lock_class_key irq_desc_lock_class; extern void init_kstat_irqs(struct irq_desc *desc, int node, int nr); -extern void clear_kstat_irqs(struct irq_desc *desc); -extern raw_spinlock_t sparse_irq_lock; -#ifdef CONFIG_SPARSE_IRQ -void replace_irq_desc(unsigned int irq, struct irq_desc *desc); -#endif +/* Resending of interrupts :*/ +void check_irq_resend(struct irq_desc *desc, unsigned int irq); #ifdef CONFIG_PROC_FS extern void register_irq_proc(unsigned int irq, struct irq_desc *desc); +extern void unregister_irq_proc(unsigned int irq, struct irq_desc *desc); extern void register_handler_proc(unsigned int irq, struct irqaction *action); extern void unregister_handler_proc(unsigned int irq, struct irqaction *action); #else static inline void register_irq_proc(unsigned int irq, struct irq_desc *desc) { } +static inline void unregister_irq_proc(unsigned int irq, struct irq_desc *desc) { } static inline void register_handler_proc(unsigned int irq, struct irqaction *action) { } static inline void unregister_handler_proc(unsigned int irq, @@ -40,17 +41,27 @@ extern int irq_select_affinity_usr(unsigned int irq); extern void irq_set_thread_affinity(struct irq_desc *desc); +#ifndef CONFIG_GENERIC_HARDIRQS_NO_DEPRECATED +static inline void irq_end(unsigned int irq, struct irq_desc *desc) +{ + if (desc->irq_data.chip && desc->irq_data.chip->end) + desc->irq_data.chip->end(irq); +} +#else +static inline void irq_end(unsigned int irq, struct irq_desc *desc) { } +#endif + /* Inline functions for support of irq chips on slow busses */ -static inline void chip_bus_lock(unsigned int irq, struct irq_desc *desc) +static inline void chip_bus_lock(struct irq_desc *desc) { - if (unlikely(desc->chip->bus_lock)) - desc->chip->bus_lock(irq); + if (unlikely(desc->irq_data.chip->irq_bus_lock)) + desc->irq_data.chip->irq_bus_lock(&desc->irq_data); } -static inline void chip_bus_sync_unlock(unsigned int irq, struct irq_desc *desc) +static inline void chip_bus_sync_unlock(struct irq_desc *desc) { - if (unlikely(desc->chip->bus_sync_unlock)) - desc->chip->bus_sync_unlock(irq); + if (unlikely(desc->irq_data.chip->irq_bus_sync_unlock)) + desc->irq_data.chip->irq_bus_sync_unlock(&desc->irq_data); } /* @@ -67,8 +78,8 @@ static inline void print_irq_desc(unsigned int irq, struct irq_desc *desc) irq, desc, desc->depth, desc->irq_count, desc->irqs_unhandled); printk("->handle_irq(): %p, ", desc->handle_irq); print_symbol("%s\n", (unsigned long)desc->handle_irq); - printk("->chip(): %p, ", desc->chip); - print_symbol("%s\n", (unsigned long)desc->chip); + printk("->irq_data.chip(): %p, ", desc->irq_data.chip); + print_symbol("%s\n", (unsigned long)desc->irq_data.chip); printk("->action(): %p\n", desc->action); if (desc->action) { printk("->action->handler(): %p, ", desc->action->handler); diff --git a/kernel/irq/irqdesc.c b/kernel/irq/irqdesc.c new file mode 100644 index 000000000000..9d917ff72675 --- /dev/null +++ b/kernel/irq/irqdesc.c @@ -0,0 +1,395 @@ +/* + * Copyright (C) 1992, 1998-2006 Linus Torvalds, Ingo Molnar + * Copyright (C) 2005-2006, Thomas Gleixner, Russell King + * + * This file contains the interrupt descriptor management code + * + * Detailed information is available in Documentation/DocBook/genericirq + * + */ +#include <linux/irq.h> +#include <linux/slab.h> +#include <linux/module.h> +#include <linux/interrupt.h> +#include <linux/kernel_stat.h> +#include <linux/radix-tree.h> +#include <linux/bitmap.h> + +#include "internals.h" + +/* + * lockdep: we want to handle all irq_desc locks as a single lock-class: + */ +static struct lock_class_key irq_desc_lock_class; + +#if defined(CONFIG_SMP) && defined(CONFIG_GENERIC_HARDIRQS) +static void __init init_irq_default_affinity(void) +{ + alloc_cpumask_var(&irq_default_affinity, GFP_NOWAIT); + cpumask_setall(irq_default_affinity); +} +#else +static void __init init_irq_default_affinity(void) +{ +} +#endif + +#ifdef CONFIG_SMP +static int alloc_masks(struct irq_desc *desc, gfp_t gfp, int node) +{ + if (!zalloc_cpumask_var_node(&desc->irq_data.affinity, gfp, node)) + return -ENOMEM; + +#ifdef CONFIG_GENERIC_PENDING_IRQ + if (!zalloc_cpumask_var_node(&desc->pending_mask, gfp, node)) { + free_cpumask_var(desc->irq_data.affinity); + return -ENOMEM; + } +#endif + return 0; +} + +static void desc_smp_init(struct irq_desc *desc, int node) +{ + desc->irq_data.node = node; + cpumask_copy(desc->irq_data.affinity, irq_default_affinity); +#ifdef CONFIG_GENERIC_PENDING_IRQ + cpumask_clear(desc->pending_mask); +#endif +} + +static inline int desc_node(struct irq_desc *desc) +{ + return desc->irq_data.node; +} + +#else +static inline int +alloc_masks(struct irq_desc *desc, gfp_t gfp, int node) { return 0; } +static inline void desc_smp_init(struct irq_desc *desc, int node) { } +static inline int desc_node(struct irq_desc *desc) { return 0; } +#endif + +static void desc_set_defaults(unsigned int irq, struct irq_desc *desc, int node) +{ + desc->irq_data.irq = irq; + desc->irq_data.chip = &no_irq_chip; + desc->irq_data.chip_data = NULL; + desc->irq_data.handler_data = NULL; + desc->irq_data.msi_desc = NULL; + desc->status = IRQ_DEFAULT_INIT_FLAGS; + desc->handle_irq = handle_bad_irq; + desc->depth = 1; + desc->irq_count = 0; + desc->irqs_unhandled = 0; + desc->name = NULL; + memset(desc->kstat_irqs, 0, nr_cpu_ids * sizeof(*(desc->kstat_irqs))); + desc_smp_init(desc, node); +} + +int nr_irqs = NR_IRQS; +EXPORT_SYMBOL_GPL(nr_irqs); + +static DEFINE_MUTEX(sparse_irq_lock); +static DECLARE_BITMAP(allocated_irqs, NR_IRQS); + +#ifdef CONFIG_SPARSE_IRQ + +static RADIX_TREE(irq_desc_tree, GFP_KERNEL); + +static void irq_insert_desc(unsigned int irq, struct irq_desc *desc) +{ + radix_tree_insert(&irq_desc_tree, irq, desc); +} + +struct irq_desc *irq_to_desc(unsigned int irq) +{ + return radix_tree_lookup(&irq_desc_tree, irq); +} + +static void delete_irq_desc(unsigned int irq) +{ + radix_tree_delete(&irq_desc_tree, irq); +} + +#ifdef CONFIG_SMP +static void free_masks(struct irq_desc *desc) +{ +#ifdef CONFIG_GENERIC_PENDING_IRQ + free_cpumask_var(desc->pending_mask); +#endif + free_cpumask_var(desc->irq_data.affinity); +} +#else +static inline void free_masks(struct irq_desc *desc) { } +#endif + +static struct irq_desc *alloc_desc(int irq, int node) +{ + struct irq_desc *desc; + gfp_t gfp = GFP_KERNEL; + + desc = kzalloc_node(sizeof(*desc), gfp, node); + if (!desc) + return NULL; + /* allocate based on nr_cpu_ids */ + desc->kstat_irqs = kzalloc_node(nr_cpu_ids * sizeof(*desc->kstat_irqs), + gfp, node); + if (!desc->kstat_irqs) + goto err_desc; + + if (alloc_masks(desc, gfp, node)) + goto err_kstat; + + raw_spin_lock_init(&desc->lock); + lockdep_set_class(&desc->lock, &irq_desc_lock_class); + + desc_set_defaults(irq, desc, node); + + return desc; + +err_kstat: + kfree(desc->kstat_irqs); +err_desc: + kfree(desc); + return NULL; +} + +static void free_desc(unsigned int irq) +{ + struct irq_desc *desc = irq_to_desc(irq); + + unregister_irq_proc(irq, desc); + + mutex_lock(&sparse_irq_lock); + delete_irq_desc(irq); + mutex_unlock(&sparse_irq_lock); + + free_masks(desc); + kfree(desc->kstat_irqs); + kfree(desc); +} + +static int alloc_descs(unsigned int start, unsigned int cnt, int node) +{ + struct irq_desc *desc; + int i; + + for (i = 0; i < cnt; i++) { + desc = alloc_desc(start + i, node); + if (!desc) + goto err; + mutex_lock(&sparse_irq_lock); + irq_insert_desc(start + i, desc); + mutex_unlock(&sparse_irq_lock); + } + return start; + +err: + for (i--; i >= 0; i--) + free_desc(start + i); + + mutex_lock(&sparse_irq_lock); + bitmap_clear(allocated_irqs, start, cnt); + mutex_unlock(&sparse_irq_lock); + return -ENOMEM; +} + +struct irq_desc * __ref irq_to_desc_alloc_node(unsigned int irq, int node) +{ + int res = irq_alloc_descs(irq, irq, 1, node); + + if (res == -EEXIST || res == irq) + return irq_to_desc(irq); + return NULL; +} + +int __init early_irq_init(void) +{ + int i, initcnt, node = first_online_node; + struct irq_desc *desc; + + init_irq_default_affinity(); + + /* Let arch update nr_irqs and return the nr of preallocated irqs */ + initcnt = arch_probe_nr_irqs(); + printk(KERN_INFO "NR_IRQS:%d nr_irqs:%d %d\n", NR_IRQS, nr_irqs, initcnt); + + for (i = 0; i < initcnt; i++) { + desc = alloc_desc(i, node); + set_bit(i, allocated_irqs); + irq_insert_desc(i, desc); + } + return arch_early_irq_init(); +} + +#else /* !CONFIG_SPARSE_IRQ */ + +struct irq_desc irq_desc[NR_IRQS] __cacheline_aligned_in_smp = { + [0 ... NR_IRQS-1] = { + .status = IRQ_DEFAULT_INIT_FLAGS, + .handle_irq = handle_bad_irq, + .depth = 1, + .lock = __RAW_SPIN_LOCK_UNLOCKED(irq_desc->lock), + } +}; + +static unsigned int kstat_irqs_all[NR_IRQS][NR_CPUS]; +int __init early_irq_init(void) +{ + int count, i, node = first_online_node; + struct irq_desc *desc; + + init_irq_default_affinity(); + + printk(KERN_INFO "NR_IRQS:%d\n", NR_IRQS); + + desc = irq_desc; + count = ARRAY_SIZE(irq_desc); + + for (i = 0; i < count; i++) { + desc[i].irq_data.irq = i; + desc[i].irq_data.chip = &no_irq_chip; + desc[i].kstat_irqs = kstat_irqs_all[i]; + alloc_masks(desc + i, GFP_KERNEL, node); + desc_smp_init(desc + i, node); + lockdep_set_class(&desc[i].lock, &irq_desc_lock_class); + } + return arch_early_irq_init(); +} + +struct irq_desc *irq_to_desc(unsigned int irq) +{ + return (irq < NR_IRQS) ? irq_desc + irq : NULL; +} + +struct irq_desc *irq_to_desc_alloc_node(unsigned int irq, int node) +{ + return irq_to_desc(irq); +} + +static void free_desc(unsigned int irq) +{ + dynamic_irq_cleanup(irq); +} + +static inline int alloc_descs(unsigned int start, unsigned int cnt, int node) +{ + return start; +} +#endif /* !CONFIG_SPARSE_IRQ */ + +/* Dynamic interrupt handling */ + +/** + * irq_free_descs - free irq descriptors + * @from: Start of descriptor range + * @cnt: Number of consecutive irqs to free + */ +void irq_free_descs(unsigned int from, unsigned int cnt) +{ + int i; + + if (from >= nr_irqs || (from + cnt) > nr_irqs) + return; + + for (i = 0; i < cnt; i++) + free_desc(from + i); + + mutex_lock(&sparse_irq_lock); + bitmap_clear(allocated_irqs, from, cnt); + mutex_unlock(&sparse_irq_lock); +} + +/** + * irq_alloc_descs - allocate and initialize a range of irq descriptors + * @irq: Allocate for specific irq number if irq >= 0 + * @from: Start the search from this irq number + * @cnt: Number of consecutive irqs to allocate. + * @node: Preferred node on which the irq descriptor should be allocated + * + * Returns the first irq number or error code + */ +int __ref +irq_alloc_descs(int irq, unsigned int from, unsigned int cnt, int node) +{ + int start, ret; + + if (!cnt) + return -EINVAL; + + mutex_lock(&sparse_irq_lock); + + start = bitmap_find_next_zero_area(allocated_irqs, nr_irqs, from, cnt, 0); + ret = -EEXIST; + if (irq >=0 && start != irq) + goto err; + + ret = -ENOMEM; + if (start >= nr_irqs) + goto err; + + bitmap_set(allocated_irqs, start, cnt); + mutex_unlock(&sparse_irq_lock); + return alloc_descs(start, cnt, node); + +err: + mutex_unlock(&sparse_irq_lock); + return ret; +} + +/** + * irq_reserve_irqs - mark irqs allocated + * @from: mark from irq number + * @cnt: number of irqs to mark + * + * Returns 0 on success or an appropriate error code + */ +int irq_reserve_irqs(unsigned int from, unsigned int cnt) +{ + unsigned int start; + int ret = 0; + + if (!cnt || (from + cnt) > nr_irqs) + return -EINVAL; + + mutex_lock(&sparse_irq_lock); + start = bitmap_find_next_zero_area(allocated_irqs, nr_irqs, from, cnt, 0); + if (start == from) + bitmap_set(allocated_irqs, start, cnt); + else + ret = -EEXIST; + mutex_unlock(&sparse_irq_lock); + return ret; +} + +/** + * irq_get_next_irq - get next allocated irq number + * @offset: where to start the search + * + * Returns next irq number after offset or nr_irqs if none is found. + */ +unsigned int irq_get_next_irq(unsigned int offset) +{ + return find_next_bit(allocated_irqs, nr_irqs, offset); +} + +/** + * dynamic_irq_cleanup - cleanup a dynamically allocated irq + * @irq: irq number to initialize + */ +void dynamic_irq_cleanup(unsigned int irq) +{ + struct irq_desc *desc = irq_to_desc(irq); + unsigned long flags; + + raw_spin_lock_irqsave(&desc->lock, flags); + desc_set_defaults(irq, desc, desc_node(desc)); + raw_spin_unlock_irqrestore(&desc->lock, flags); +} + +unsigned int kstat_irqs_cpu(unsigned int irq, int cpu) +{ + struct irq_desc *desc = irq_to_desc(irq); + return desc ? desc->kstat_irqs[cpu] : 0; +} diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c index c3003e9d91a3..644e8d5fa367 100644 --- a/kernel/irq/manage.c +++ b/kernel/irq/manage.c @@ -73,8 +73,8 @@ int irq_can_set_affinity(unsigned int irq) { struct irq_desc *desc = irq_to_desc(irq); - if (CHECK_IRQ_PER_CPU(desc->status) || !desc->chip || - !desc->chip->set_affinity) + if (CHECK_IRQ_PER_CPU(desc->status) || !desc->irq_data.chip || + !desc->irq_data.chip->irq_set_affinity) return 0; return 1; @@ -109,17 +109,18 @@ void irq_set_thread_affinity(struct irq_desc *desc) int irq_set_affinity(unsigned int irq, const struct cpumask *cpumask) { struct irq_desc *desc = irq_to_desc(irq); + struct irq_chip *chip = desc->irq_data.chip; unsigned long flags; - if (!desc->chip->set_affinity) + if (!chip->irq_set_affinity) return -EINVAL; raw_spin_lock_irqsave(&desc->lock, flags); #ifdef CONFIG_GENERIC_PENDING_IRQ if (desc->status & IRQ_MOVE_PCNTXT) { - if (!desc->chip->set_affinity(irq, cpumask)) { - cpumask_copy(desc->affinity, cpumask); + if (!chip->irq_set_affinity(&desc->irq_data, cpumask, false)) { + cpumask_copy(desc->irq_data.affinity, cpumask); irq_set_thread_affinity(desc); } } @@ -128,8 +129,8 @@ int irq_set_affinity(unsigned int irq, const struct cpumask *cpumask) cpumask_copy(desc->pending_mask, cpumask); } #else - if (!desc->chip->set_affinity(irq, cpumask)) { - cpumask_copy(desc->affinity, cpumask); + if (!chip->irq_set_affinity(&desc->irq_data, cpumask, false)) { + cpumask_copy(desc->irq_data.affinity, cpumask); irq_set_thread_affinity(desc); } #endif @@ -168,16 +169,16 @@ static int setup_affinity(unsigned int irq, struct irq_desc *desc) * one of the targets is online. */ if (desc->status & (IRQ_AFFINITY_SET | IRQ_NO_BALANCING)) { - if (cpumask_any_and(desc->affinity, cpu_online_mask) + if (cpumask_any_and(desc->irq_data.affinity, cpu_online_mask) < nr_cpu_ids) goto set_affinity; else desc->status &= ~IRQ_AFFINITY_SET; } - cpumask_and(desc->affinity, cpu_online_mask, irq_default_affinity); + cpumask_and(desc->irq_data.affinity, cpu_online_mask, irq_default_affinity); set_affinity: - desc->chip->set_affinity(irq, desc->affinity); + desc->irq_data.chip->irq_set_affinity(&desc->irq_data, desc->irq_data.affinity, false); return 0; } @@ -223,7 +224,7 @@ void __disable_irq(struct irq_desc *desc, unsigned int irq, bool suspend) if (!desc->depth++) { desc->status |= IRQ_DISABLED; - desc->chip->disable(irq); + desc->irq_data.chip->irq_disable(&desc->irq_data); } } @@ -246,11 +247,11 @@ void disable_irq_nosync(unsigned int irq) if (!desc) return; - chip_bus_lock(irq, desc); + chip_bus_lock(desc); raw_spin_lock_irqsave(&desc->lock, flags); __disable_irq(desc, irq, false); raw_spin_unlock_irqrestore(&desc->lock, flags); - chip_bus_sync_unlock(irq, desc); + chip_bus_sync_unlock(desc); } EXPORT_SYMBOL(disable_irq_nosync); @@ -313,7 +314,7 @@ void __enable_irq(struct irq_desc *desc, unsigned int irq, bool resume) * IRQ line is re-enabled. * * This function may be called from IRQ context only when - * desc->chip->bus_lock and desc->chip->bus_sync_unlock are NULL ! + * desc->irq_data.chip->bus_lock and desc->chip->bus_sync_unlock are NULL ! */ void enable_irq(unsigned int irq) { @@ -323,11 +324,11 @@ void enable_irq(unsigned int irq) if (!desc) return; - chip_bus_lock(irq, desc); + chip_bus_lock(desc); raw_spin_lock_irqsave(&desc->lock, flags); __enable_irq(desc, irq, false); raw_spin_unlock_irqrestore(&desc->lock, flags); - chip_bus_sync_unlock(irq, desc); + chip_bus_sync_unlock(desc); } EXPORT_SYMBOL(enable_irq); @@ -336,8 +337,8 @@ static int set_irq_wake_real(unsigned int irq, unsigned int on) struct irq_desc *desc = irq_to_desc(irq); int ret = -ENXIO; - if (desc->chip->set_wake) - ret = desc->chip->set_wake(irq, on); + if (desc->irq_data.chip->irq_set_wake) + ret = desc->irq_data.chip->irq_set_wake(&desc->irq_data, on); return ret; } @@ -429,12 +430,12 @@ void compat_irq_chip_set_default_handler(struct irq_desc *desc) } int __irq_set_trigger(struct irq_desc *desc, unsigned int irq, - unsigned long flags) + unsigned long flags) { int ret; - struct irq_chip *chip = desc->chip; + struct irq_chip *chip = desc->irq_data.chip; - if (!chip || !chip->set_type) { + if (!chip || !chip->irq_set_type) { /* * IRQF_TRIGGER_* but the PIC does not support multiple * flow-types? @@ -445,11 +446,11 @@ int __irq_set_trigger(struct irq_desc *desc, unsigned int irq, } /* caller masked out all except trigger mode flags */ - ret = chip->set_type(irq, flags); + ret = chip->irq_set_type(&desc->irq_data, flags); if (ret) - pr_err("setting trigger mode %d for irq %u failed (%pF)\n", - (int)flags, irq, chip->set_type); + pr_err("setting trigger mode %lu for irq %u failed (%pF)\n", + flags, irq, chip->irq_set_type); else { if (flags & (IRQ_TYPE_LEVEL_LOW | IRQ_TYPE_LEVEL_HIGH)) flags |= IRQ_LEVEL; @@ -457,8 +458,8 @@ int __irq_set_trigger(struct irq_desc *desc, unsigned int irq, desc->status &= ~(IRQ_LEVEL | IRQ_TYPE_SENSE_MASK); desc->status |= flags; - if (chip != desc->chip) - irq_chip_set_defaults(desc->chip); + if (chip != desc->irq_data.chip) + irq_chip_set_defaults(desc->irq_data.chip); } return ret; @@ -507,7 +508,7 @@ static int irq_wait_for_interrupt(struct irqaction *action) static void irq_finalize_oneshot(unsigned int irq, struct irq_desc *desc) { again: - chip_bus_lock(irq, desc); + chip_bus_lock(desc); raw_spin_lock_irq(&desc->lock); /* @@ -521,17 +522,17 @@ again: */ if (unlikely(desc->status & IRQ_INPROGRESS)) { raw_spin_unlock_irq(&desc->lock); - chip_bus_sync_unlock(irq, desc); + chip_bus_sync_unlock(desc); cpu_relax(); goto again; } if (!(desc->status & IRQ_DISABLED) && (desc->status & IRQ_MASKED)) { desc->status &= ~IRQ_MASKED; - desc->chip->unmask(irq); + desc->irq_data.chip->irq_unmask(&desc->irq_data); } raw_spin_unlock_irq(&desc->lock); - chip_bus_sync_unlock(irq, desc); + chip_bus_sync_unlock(desc); } #ifdef CONFIG_SMP @@ -556,7 +557,7 @@ irq_thread_check_affinity(struct irq_desc *desc, struct irqaction *action) } raw_spin_lock_irq(&desc->lock); - cpumask_copy(mask, desc->affinity); + cpumask_copy(mask, desc->irq_data.affinity); raw_spin_unlock_irq(&desc->lock); set_cpus_allowed_ptr(current, mask); @@ -657,7 +658,7 @@ __setup_irq(unsigned int irq, struct irq_desc *desc, struct irqaction *new) if (!desc) return -EINVAL; - if (desc->chip == &no_irq_chip) + if (desc->irq_data.chip == &no_irq_chip) return -ENOSYS; /* * Some drivers like serial.c use request_irq() heavily, @@ -752,7 +753,7 @@ __setup_irq(unsigned int irq, struct irq_desc *desc, struct irqaction *new) } if (!shared) { - irq_chip_set_defaults(desc->chip); + irq_chip_set_defaults(desc->irq_data.chip); init_waitqueue_head(&desc->wait_for_threads); @@ -779,7 +780,7 @@ __setup_irq(unsigned int irq, struct irq_desc *desc, struct irqaction *new) if (!(desc->status & IRQ_NOAUTOEN)) { desc->depth = 0; desc->status &= ~IRQ_DISABLED; - desc->chip->startup(irq); + desc->irq_data.chip->irq_startup(&desc->irq_data); } else /* Undo nested disables: */ desc->depth = 1; @@ -912,17 +913,17 @@ static struct irqaction *__free_irq(unsigned int irq, void *dev_id) /* Currently used only by UML, might disappear one day: */ #ifdef CONFIG_IRQ_RELEASE_METHOD - if (desc->chip->release) - desc->chip->release(irq, dev_id); + if (desc->irq_data.chip->release) + desc->irq_data.chip->release(irq, dev_id); #endif /* If this was the last handler, shut down the IRQ line: */ if (!desc->action) { desc->status |= IRQ_DISABLED; - if (desc->chip->shutdown) - desc->chip->shutdown(irq); + if (desc->irq_data.chip->irq_shutdown) + desc->irq_data.chip->irq_shutdown(&desc->irq_data); else - desc->chip->disable(irq); + desc->irq_data.chip->irq_disable(&desc->irq_data); } #ifdef CONFIG_SMP @@ -997,9 +998,9 @@ void free_irq(unsigned int irq, void *dev_id) if (!desc) return; - chip_bus_lock(irq, desc); + chip_bus_lock(desc); kfree(__free_irq(irq, dev_id)); - chip_bus_sync_unlock(irq, desc); + chip_bus_sync_unlock(desc); } EXPORT_SYMBOL(free_irq); @@ -1086,9 +1087,9 @@ int request_threaded_irq(unsigned int irq, irq_handler_t handler, action->name = devname; action->dev_id = dev_id; - chip_bus_lock(irq, desc); + chip_bus_lock(desc); retval = __setup_irq(irq, desc, action); - chip_bus_sync_unlock(irq, desc); + chip_bus_sync_unlock(desc); if (retval) kfree(action); diff --git a/kernel/irq/migration.c b/kernel/irq/migration.c index 241962280836..1d2541940480 100644 --- a/kernel/irq/migration.c +++ b/kernel/irq/migration.c @@ -7,6 +7,7 @@ void move_masked_irq(int irq) { struct irq_desc *desc = irq_to_desc(irq); + struct irq_chip *chip = desc->irq_data.chip; if (likely(!(desc->status & IRQ_MOVE_PENDING))) return; @@ -24,7 +25,7 @@ void move_masked_irq(int irq) if (unlikely(cpumask_empty(desc->pending_mask))) return; - if (!desc->chip->set_affinity) + if (!chip->irq_set_affinity) return; assert_raw_spin_locked(&desc->lock); @@ -43,8 +44,9 @@ void move_masked_irq(int irq) */ if (likely(cpumask_any_and(desc->pending_mask, cpu_online_mask) < nr_cpu_ids)) - if (!desc->chip->set_affinity(irq, desc->pending_mask)) { - cpumask_copy(desc->affinity, desc->pending_mask); + if (!chip->irq_set_affinity(&desc->irq_data, + desc->pending_mask, false)) { + cpumask_copy(desc->irq_data.affinity, desc->pending_mask); irq_set_thread_affinity(desc); } @@ -61,8 +63,8 @@ void move_native_irq(int irq) if (unlikely(desc->status & IRQ_DISABLED)) return; - desc->chip->mask(irq); + desc->irq_data.chip->irq_mask(&desc->irq_data); move_masked_irq(irq); - desc->chip->unmask(irq); + desc->irq_data.chip->irq_unmask(&desc->irq_data); } diff --git a/kernel/irq/numa_migrate.c b/kernel/irq/numa_migrate.c deleted file mode 100644 index 65d3845665ac..000000000000 --- a/kernel/irq/numa_migrate.c +++ /dev/null @@ -1,120 +0,0 @@ -/* - * NUMA irq-desc migration code - * - * Migrate IRQ data structures (irq_desc, chip_data, etc.) over to - * the new "home node" of the IRQ. - */ - -#include <linux/irq.h> -#include <linux/slab.h> -#include <linux/module.h> -#include <linux/random.h> -#include <linux/interrupt.h> -#include <linux/kernel_stat.h> - -#include "internals.h" - -static void init_copy_kstat_irqs(struct irq_desc *old_desc, - struct irq_desc *desc, - int node, int nr) -{ - init_kstat_irqs(desc, node, nr); - - if (desc->kstat_irqs != old_desc->kstat_irqs) - memcpy(desc->kstat_irqs, old_desc->kstat_irqs, - nr * sizeof(*desc->kstat_irqs)); -} - -static void free_kstat_irqs(struct irq_desc *old_desc, struct irq_desc *desc) -{ - if (old_desc->kstat_irqs == desc->kstat_irqs) - return; - - kfree(old_desc->kstat_irqs); - old_desc->kstat_irqs = NULL; -} - -static bool init_copy_one_irq_desc(int irq, struct irq_desc *old_desc, - struct irq_desc *desc, int node) -{ - memcpy(desc, old_desc, sizeof(struct irq_desc)); - if (!alloc_desc_masks(desc, node, false)) { - printk(KERN_ERR "irq %d: can not get new irq_desc cpumask " - "for migration.\n", irq); - return false; - } - raw_spin_lock_init(&desc->lock); - desc->node = node; - lockdep_set_class(&desc->lock, &irq_desc_lock_class); - init_copy_kstat_irqs(old_desc, desc, node, nr_cpu_ids); - init_copy_desc_masks(old_desc, desc); - arch_init_copy_chip_data(old_desc, desc, node); - return true; -} - -static void free_one_irq_desc(struct irq_desc *old_desc, struct irq_desc *desc) -{ - free_kstat_irqs(old_desc, desc); - free_desc_masks(old_desc, desc); - arch_free_chip_data(old_desc, desc); -} - -static struct irq_desc *__real_move_irq_desc(struct irq_desc *old_desc, - int node) -{ - struct irq_desc *desc; - unsigned int irq; - unsigned long flags; - - irq = old_desc->irq; - - raw_spin_lock_irqsave(&sparse_irq_lock, flags); - - /* We have to check it to avoid races with another CPU */ - desc = irq_to_desc(irq); - - if (desc && old_desc != desc) - goto out_unlock; - - desc = kzalloc_node(sizeof(*desc), GFP_ATOMIC, node); - if (!desc) { - printk(KERN_ERR "irq %d: can not get new irq_desc " - "for migration.\n", irq); - /* still use old one */ - desc = old_desc; - goto out_unlock; - } - if (!init_copy_one_irq_desc(irq, old_desc, desc, node)) { - /* still use old one */ - kfree(desc); - desc = old_desc; - goto out_unlock; - } - - replace_irq_desc(irq, desc); - raw_spin_unlock_irqrestore(&sparse_irq_lock, flags); - - /* free the old one */ - free_one_irq_desc(old_desc, desc); - kfree(old_desc); - - return desc; - -out_unlock: - raw_spin_unlock_irqrestore(&sparse_irq_lock, flags); - - return desc; -} - -struct irq_desc *move_irq_desc(struct irq_desc *desc, int node) -{ - /* those static or target node is -1, do not move them */ - if (desc->irq < NR_IRQS_LEGACY || node == -1) - return desc; - - if (desc->node != node) - desc = __real_move_irq_desc(desc, node); - - return desc; -} - diff --git a/kernel/irq/proc.c b/kernel/irq/proc.c index 09a2ee540bd2..01b1d3a88983 100644 --- a/kernel/irq/proc.c +++ b/kernel/irq/proc.c @@ -21,7 +21,7 @@ static struct proc_dir_entry *root_irq_dir; static int irq_affinity_proc_show(struct seq_file *m, void *v) { struct irq_desc *desc = irq_to_desc((long)m->private); - const struct cpumask *mask = desc->affinity; + const struct cpumask *mask = desc->irq_data.affinity; #ifdef CONFIG_GENERIC_PENDING_IRQ if (desc->status & IRQ_MOVE_PENDING) @@ -65,7 +65,7 @@ static ssize_t irq_affinity_proc_write(struct file *file, cpumask_var_t new_value; int err; - if (!irq_to_desc(irq)->chip->set_affinity || no_irq_affinity || + if (!irq_to_desc(irq)->irq_data.chip->irq_set_affinity || no_irq_affinity || irq_balancing_disabled(irq)) return -EIO; @@ -185,7 +185,7 @@ static int irq_node_proc_show(struct seq_file *m, void *v) { struct irq_desc *desc = irq_to_desc((long) m->private); - seq_printf(m, "%d\n", desc->node); + seq_printf(m, "%d\n", desc->irq_data.node); return 0; } @@ -269,7 +269,7 @@ void register_irq_proc(unsigned int irq, struct irq_desc *desc) { char name [MAX_NAMELEN]; - if (!root_irq_dir || (desc->chip == &no_irq_chip) || desc->dir) + if (!root_irq_dir || (desc->irq_data.chip == &no_irq_chip) || desc->dir) return; memset(name, 0, MAX_NAMELEN); @@ -297,6 +297,24 @@ void register_irq_proc(unsigned int irq, struct irq_desc *desc) &irq_spurious_proc_fops, (void *)(long)irq); } +void unregister_irq_proc(unsigned int irq, struct irq_desc *desc) +{ + char name [MAX_NAMELEN]; + + if (!root_irq_dir || !desc->dir) + return; +#ifdef CONFIG_SMP + remove_proc_entry("smp_affinity", desc->dir); + remove_proc_entry("affinity_hint", desc->dir); + remove_proc_entry("node", desc->dir); +#endif + remove_proc_entry("spurious", desc->dir); + + memset(name, 0, MAX_NAMELEN); + sprintf(name, "%u", irq); + remove_proc_entry(name, root_irq_dir); +} + #undef MAX_NAMELEN void unregister_handler_proc(unsigned int irq, struct irqaction *action) diff --git a/kernel/irq/resend.c b/kernel/irq/resend.c index 090c3763f3a2..891115a929aa 100644 --- a/kernel/irq/resend.c +++ b/kernel/irq/resend.c @@ -60,7 +60,7 @@ void check_irq_resend(struct irq_desc *desc, unsigned int irq) /* * Make sure the interrupt is enabled, before resending it: */ - desc->chip->enable(irq); + desc->irq_data.chip->irq_enable(&desc->irq_data); /* * We do not resend level type interrupts. Level type @@ -70,7 +70,8 @@ void check_irq_resend(struct irq_desc *desc, unsigned int irq) if ((status & (IRQ_LEVEL | IRQ_PENDING | IRQ_REPLAY)) == IRQ_PENDING) { desc->status = (status & ~IRQ_PENDING) | IRQ_REPLAY; - if (!desc->chip->retrigger || !desc->chip->retrigger(irq)) { + if (!desc->irq_data.chip->irq_retrigger || + !desc->irq_data.chip->irq_retrigger(&desc->irq_data)) { #ifdef CONFIG_HARDIRQS_SW_RESEND /* Set it pending and activate the softirq: */ set_bit(irq, irqs_resend); diff --git a/kernel/irq/spurious.c b/kernel/irq/spurious.c index 89fb90ae534f..3089d3b9d5f3 100644 --- a/kernel/irq/spurious.c +++ b/kernel/irq/spurious.c @@ -14,6 +14,8 @@ #include <linux/moduleparam.h> #include <linux/timer.h> +#include "internals.h" + static int irqfixup __read_mostly; #define POLL_SPURIOUS_IRQ_INTERVAL (HZ/10) @@ -78,8 +80,8 @@ static int try_one_irq(int irq, struct irq_desc *desc) * If we did actual work for the real IRQ line we must let the * IRQ controller clean up too */ - if (work && desc->chip && desc->chip->end) - desc->chip->end(irq); + if (work) + irq_end(irq, desc); raw_spin_unlock(&desc->lock); return ok; @@ -254,7 +256,7 @@ void note_interrupt(unsigned int irq, struct irq_desc *desc, printk(KERN_EMERG "Disabling IRQ #%d\n", irq); desc->status |= IRQ_DISABLED | IRQ_SPURIOUS_DISABLED; desc->depth++; - desc->chip->disable(irq); + desc->irq_data.chip->irq_disable(&desc->irq_data); mod_timer(&poll_spurious_irq_timer, jiffies + POLL_SPURIOUS_IRQ_INTERVAL); diff --git a/kernel/irq_work.c b/kernel/irq_work.c new file mode 100644 index 000000000000..f16763ff8481 --- /dev/null +++ b/kernel/irq_work.c @@ -0,0 +1,164 @@ +/* + * Copyright (C) 2010 Red Hat, Inc., Peter Zijlstra <pzijlstr@redhat.com> + * + * Provides a framework for enqueueing and running callbacks from hardirq + * context. The enqueueing is NMI-safe. + */ + +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/irq_work.h> +#include <linux/hardirq.h> + +/* + * An entry can be in one of four states: + * + * free NULL, 0 -> {claimed} : free to be used + * claimed NULL, 3 -> {pending} : claimed to be enqueued + * pending next, 3 -> {busy} : queued, pending callback + * busy NULL, 2 -> {free, claimed} : callback in progress, can be claimed + * + * We use the lower two bits of the next pointer to keep PENDING and BUSY + * flags. + */ + +#define IRQ_WORK_PENDING 1UL +#define IRQ_WORK_BUSY 2UL +#define IRQ_WORK_FLAGS 3UL + +static inline bool irq_work_is_set(struct irq_work *entry, int flags) +{ + return (unsigned long)entry->next & flags; +} + +static inline struct irq_work *irq_work_next(struct irq_work *entry) +{ + unsigned long next = (unsigned long)entry->next; + next &= ~IRQ_WORK_FLAGS; + return (struct irq_work *)next; +} + +static inline struct irq_work *next_flags(struct irq_work *entry, int flags) +{ + unsigned long next = (unsigned long)entry; + next |= flags; + return (struct irq_work *)next; +} + +static DEFINE_PER_CPU(struct irq_work *, irq_work_list); + +/* + * Claim the entry so that no one else will poke at it. + */ +static bool irq_work_claim(struct irq_work *entry) +{ + struct irq_work *next, *nflags; + + do { + next = entry->next; + if ((unsigned long)next & IRQ_WORK_PENDING) + return false; + nflags = next_flags(next, IRQ_WORK_FLAGS); + } while (cmpxchg(&entry->next, next, nflags) != next); + + return true; +} + + +void __weak arch_irq_work_raise(void) +{ + /* + * Lame architectures will get the timer tick callback + */ +} + +/* + * Queue the entry and raise the IPI if needed. + */ +static void __irq_work_queue(struct irq_work *entry) +{ + struct irq_work **head, *next; + + head = &get_cpu_var(irq_work_list); + + do { + next = *head; + /* Can assign non-atomic because we keep the flags set. */ + entry->next = next_flags(next, IRQ_WORK_FLAGS); + } while (cmpxchg(head, next, entry) != next); + + /* The list was empty, raise self-interrupt to start processing. */ + if (!irq_work_next(entry)) + arch_irq_work_raise(); + + put_cpu_var(irq_work_list); +} + +/* + * Enqueue the irq_work @entry, returns true on success, failure when the + * @entry was already enqueued by someone else. + * + * Can be re-enqueued while the callback is still in progress. + */ +bool irq_work_queue(struct irq_work *entry) +{ + if (!irq_work_claim(entry)) { + /* + * Already enqueued, can't do! + */ + return false; + } + + __irq_work_queue(entry); + return true; +} +EXPORT_SYMBOL_GPL(irq_work_queue); + +/* + * Run the irq_work entries on this cpu. Requires to be ran from hardirq + * context with local IRQs disabled. + */ +void irq_work_run(void) +{ + struct irq_work *list, **head; + + head = &__get_cpu_var(irq_work_list); + if (*head == NULL) + return; + + BUG_ON(!in_irq()); + BUG_ON(!irqs_disabled()); + + list = xchg(head, NULL); + while (list != NULL) { + struct irq_work *entry = list; + + list = irq_work_next(list); + + /* + * Clear the PENDING bit, after this point the @entry + * can be re-used. + */ + entry->next = next_flags(NULL, IRQ_WORK_BUSY); + entry->func(entry); + /* + * Clear the BUSY bit and return to the free state if + * no-one else claimed it meanwhile. + */ + cmpxchg(&entry->next, next_flags(NULL, IRQ_WORK_BUSY), NULL); + } +} +EXPORT_SYMBOL_GPL(irq_work_run); + +/* + * Synchronize against the irq_work @entry, ensures the entry is not + * currently in use. + */ +void irq_work_sync(struct irq_work *entry) +{ + WARN_ON_ONCE(irqs_disabled()); + + while (irq_work_is_set(entry, IRQ_WORK_BUSY)) + cpu_relax(); +} +EXPORT_SYMBOL_GPL(irq_work_sync); diff --git a/kernel/jump_label.c b/kernel/jump_label.c new file mode 100644 index 000000000000..7be868bf25c6 --- /dev/null +++ b/kernel/jump_label.c @@ -0,0 +1,429 @@ +/* + * jump label support + * + * Copyright (C) 2009 Jason Baron <jbaron@redhat.com> + * + */ +#include <linux/jump_label.h> +#include <linux/memory.h> +#include <linux/uaccess.h> +#include <linux/module.h> +#include <linux/list.h> +#include <linux/jhash.h> +#include <linux/slab.h> +#include <linux/sort.h> +#include <linux/err.h> + +#ifdef HAVE_JUMP_LABEL + +#define JUMP_LABEL_HASH_BITS 6 +#define JUMP_LABEL_TABLE_SIZE (1 << JUMP_LABEL_HASH_BITS) +static struct hlist_head jump_label_table[JUMP_LABEL_TABLE_SIZE]; + +/* mutex to protect coming/going of the the jump_label table */ +static DEFINE_MUTEX(jump_label_mutex); + +struct jump_label_entry { + struct hlist_node hlist; + struct jump_entry *table; + int nr_entries; + /* hang modules off here */ + struct hlist_head modules; + unsigned long key; +}; + +struct jump_label_module_entry { + struct hlist_node hlist; + struct jump_entry *table; + int nr_entries; + struct module *mod; +}; + +static int jump_label_cmp(const void *a, const void *b) +{ + const struct jump_entry *jea = a; + const struct jump_entry *jeb = b; + + if (jea->key < jeb->key) + return -1; + + if (jea->key > jeb->key) + return 1; + + return 0; +} + +static void +sort_jump_label_entries(struct jump_entry *start, struct jump_entry *stop) +{ + unsigned long size; + + size = (((unsigned long)stop - (unsigned long)start) + / sizeof(struct jump_entry)); + sort(start, size, sizeof(struct jump_entry), jump_label_cmp, NULL); +} + +static struct jump_label_entry *get_jump_label_entry(jump_label_t key) +{ + struct hlist_head *head; + struct hlist_node *node; + struct jump_label_entry *e; + u32 hash = jhash((void *)&key, sizeof(jump_label_t), 0); + + head = &jump_label_table[hash & (JUMP_LABEL_TABLE_SIZE - 1)]; + hlist_for_each_entry(e, node, head, hlist) { + if (key == e->key) + return e; + } + return NULL; +} + +static struct jump_label_entry * +add_jump_label_entry(jump_label_t key, int nr_entries, struct jump_entry *table) +{ + struct hlist_head *head; + struct jump_label_entry *e; + u32 hash; + + e = get_jump_label_entry(key); + if (e) + return ERR_PTR(-EEXIST); + + e = kmalloc(sizeof(struct jump_label_entry), GFP_KERNEL); + if (!e) + return ERR_PTR(-ENOMEM); + + hash = jhash((void *)&key, sizeof(jump_label_t), 0); + head = &jump_label_table[hash & (JUMP_LABEL_TABLE_SIZE - 1)]; + e->key = key; + e->table = table; + e->nr_entries = nr_entries; + INIT_HLIST_HEAD(&(e->modules)); + hlist_add_head(&e->hlist, head); + return e; +} + +static int +build_jump_label_hashtable(struct jump_entry *start, struct jump_entry *stop) +{ + struct jump_entry *iter, *iter_begin; + struct jump_label_entry *entry; + int count; + + sort_jump_label_entries(start, stop); + iter = start; + while (iter < stop) { + entry = get_jump_label_entry(iter->key); + if (!entry) { + iter_begin = iter; + count = 0; + while ((iter < stop) && + (iter->key == iter_begin->key)) { + iter++; + count++; + } + entry = add_jump_label_entry(iter_begin->key, + count, iter_begin); + if (IS_ERR(entry)) + return PTR_ERR(entry); + } else { + WARN_ONCE(1, KERN_ERR "build_jump_hashtable: unexpected entry!\n"); + return -1; + } + } + return 0; +} + +/*** + * jump_label_update - update jump label text + * @key - key value associated with a a jump label + * @type - enum set to JUMP_LABEL_ENABLE or JUMP_LABEL_DISABLE + * + * Will enable/disable the jump for jump label @key, depending on the + * value of @type. + * + */ + +void jump_label_update(unsigned long key, enum jump_label_type type) +{ + struct jump_entry *iter; + struct jump_label_entry *entry; + struct hlist_node *module_node; + struct jump_label_module_entry *e_module; + int count; + + mutex_lock(&jump_label_mutex); + entry = get_jump_label_entry((jump_label_t)key); + if (entry) { + count = entry->nr_entries; + iter = entry->table; + while (count--) { + if (kernel_text_address(iter->code)) + arch_jump_label_transform(iter, type); + iter++; + } + /* eanble/disable jump labels in modules */ + hlist_for_each_entry(e_module, module_node, &(entry->modules), + hlist) { + count = e_module->nr_entries; + iter = e_module->table; + while (count--) { + if (kernel_text_address(iter->code)) + arch_jump_label_transform(iter, type); + iter++; + } + } + } + mutex_unlock(&jump_label_mutex); +} + +static int addr_conflict(struct jump_entry *entry, void *start, void *end) +{ + if (entry->code <= (unsigned long)end && + entry->code + JUMP_LABEL_NOP_SIZE > (unsigned long)start) + return 1; + + return 0; +} + +#ifdef CONFIG_MODULES + +static int module_conflict(void *start, void *end) +{ + struct hlist_head *head; + struct hlist_node *node, *node_next, *module_node, *module_node_next; + struct jump_label_entry *e; + struct jump_label_module_entry *e_module; + struct jump_entry *iter; + int i, count; + int conflict = 0; + + for (i = 0; i < JUMP_LABEL_TABLE_SIZE; i++) { + head = &jump_label_table[i]; + hlist_for_each_entry_safe(e, node, node_next, head, hlist) { + hlist_for_each_entry_safe(e_module, module_node, + module_node_next, + &(e->modules), hlist) { + count = e_module->nr_entries; + iter = e_module->table; + while (count--) { + if (addr_conflict(iter, start, end)) { + conflict = 1; + goto out; + } + iter++; + } + } + } + } +out: + return conflict; +} + +#endif + +/*** + * jump_label_text_reserved - check if addr range is reserved + * @start: start text addr + * @end: end text addr + * + * checks if the text addr located between @start and @end + * overlaps with any of the jump label patch addresses. Code + * that wants to modify kernel text should first verify that + * it does not overlap with any of the jump label addresses. + * + * returns 1 if there is an overlap, 0 otherwise + */ +int jump_label_text_reserved(void *start, void *end) +{ + struct jump_entry *iter; + struct jump_entry *iter_start = __start___jump_table; + struct jump_entry *iter_stop = __start___jump_table; + int conflict = 0; + + mutex_lock(&jump_label_mutex); + iter = iter_start; + while (iter < iter_stop) { + if (addr_conflict(iter, start, end)) { + conflict = 1; + goto out; + } + iter++; + } + + /* now check modules */ +#ifdef CONFIG_MODULES + conflict = module_conflict(start, end); +#endif +out: + mutex_unlock(&jump_label_mutex); + return conflict; +} + +static __init int init_jump_label(void) +{ + int ret; + struct jump_entry *iter_start = __start___jump_table; + struct jump_entry *iter_stop = __stop___jump_table; + struct jump_entry *iter; + + mutex_lock(&jump_label_mutex); + ret = build_jump_label_hashtable(__start___jump_table, + __stop___jump_table); + iter = iter_start; + while (iter < iter_stop) { + arch_jump_label_text_poke_early(iter->code); + iter++; + } + mutex_unlock(&jump_label_mutex); + return ret; +} +early_initcall(init_jump_label); + +#ifdef CONFIG_MODULES + +static struct jump_label_module_entry * +add_jump_label_module_entry(struct jump_label_entry *entry, + struct jump_entry *iter_begin, + int count, struct module *mod) +{ + struct jump_label_module_entry *e; + + e = kmalloc(sizeof(struct jump_label_module_entry), GFP_KERNEL); + if (!e) + return ERR_PTR(-ENOMEM); + e->mod = mod; + e->nr_entries = count; + e->table = iter_begin; + hlist_add_head(&e->hlist, &entry->modules); + return e; +} + +static int add_jump_label_module(struct module *mod) +{ + struct jump_entry *iter, *iter_begin; + struct jump_label_entry *entry; + struct jump_label_module_entry *module_entry; + int count; + + /* if the module doesn't have jump label entries, just return */ + if (!mod->num_jump_entries) + return 0; + + sort_jump_label_entries(mod->jump_entries, + mod->jump_entries + mod->num_jump_entries); + iter = mod->jump_entries; + while (iter < mod->jump_entries + mod->num_jump_entries) { + entry = get_jump_label_entry(iter->key); + iter_begin = iter; + count = 0; + while ((iter < mod->jump_entries + mod->num_jump_entries) && + (iter->key == iter_begin->key)) { + iter++; + count++; + } + if (!entry) { + entry = add_jump_label_entry(iter_begin->key, 0, NULL); + if (IS_ERR(entry)) + return PTR_ERR(entry); + } + module_entry = add_jump_label_module_entry(entry, iter_begin, + count, mod); + if (IS_ERR(module_entry)) + return PTR_ERR(module_entry); + } + return 0; +} + +static void remove_jump_label_module(struct module *mod) +{ + struct hlist_head *head; + struct hlist_node *node, *node_next, *module_node, *module_node_next; + struct jump_label_entry *e; + struct jump_label_module_entry *e_module; + int i; + + /* if the module doesn't have jump label entries, just return */ + if (!mod->num_jump_entries) + return; + + for (i = 0; i < JUMP_LABEL_TABLE_SIZE; i++) { + head = &jump_label_table[i]; + hlist_for_each_entry_safe(e, node, node_next, head, hlist) { + hlist_for_each_entry_safe(e_module, module_node, + module_node_next, + &(e->modules), hlist) { + if (e_module->mod == mod) { + hlist_del(&e_module->hlist); + kfree(e_module); + } + } + if (hlist_empty(&e->modules) && (e->nr_entries == 0)) { + hlist_del(&e->hlist); + kfree(e); + } + } + } +} + +static int +jump_label_module_notify(struct notifier_block *self, unsigned long val, + void *data) +{ + struct module *mod = data; + int ret = 0; + + switch (val) { + case MODULE_STATE_COMING: + mutex_lock(&jump_label_mutex); + ret = add_jump_label_module(mod); + if (ret) + remove_jump_label_module(mod); + mutex_unlock(&jump_label_mutex); + break; + case MODULE_STATE_GOING: + mutex_lock(&jump_label_mutex); + remove_jump_label_module(mod); + mutex_unlock(&jump_label_mutex); + break; + } + return ret; +} + +/*** + * apply_jump_label_nops - patch module jump labels with arch_get_jump_label_nop() + * @mod: module to patch + * + * Allow for run-time selection of the optimal nops. Before the module + * loads patch these with arch_get_jump_label_nop(), which is specified by + * the arch specific jump label code. + */ +void jump_label_apply_nops(struct module *mod) +{ + struct jump_entry *iter; + + /* if the module doesn't have jump label entries, just return */ + if (!mod->num_jump_entries) + return; + + iter = mod->jump_entries; + while (iter < mod->jump_entries + mod->num_jump_entries) { + arch_jump_label_text_poke_early(iter->code); + iter++; + } +} + +struct notifier_block jump_label_module_nb = { + .notifier_call = jump_label_module_notify, + .priority = 0, +}; + +static __init int init_jump_label_module(void) +{ + return register_module_notifier(&jump_label_module_nb); +} +early_initcall(init_jump_label_module); + +#endif /* CONFIG_MODULES */ + +#endif diff --git a/kernel/kprobes.c b/kernel/kprobes.c index 282035f3ae96..ec4210c6501e 100644 --- a/kernel/kprobes.c +++ b/kernel/kprobes.c @@ -47,6 +47,7 @@ #include <linux/memory.h> #include <linux/ftrace.h> #include <linux/cpu.h> +#include <linux/jump_label.h> #include <asm-generic/sections.h> #include <asm/cacheflush.h> @@ -399,7 +400,7 @@ static inline int kprobe_optready(struct kprobe *p) * Return an optimized kprobe whose optimizing code replaces * instructions including addr (exclude breakpoint). */ -struct kprobe *__kprobes get_optimized_kprobe(unsigned long addr) +static struct kprobe *__kprobes get_optimized_kprobe(unsigned long addr) { int i; struct kprobe *p = NULL; @@ -831,6 +832,7 @@ void __kprobes recycle_rp_inst(struct kretprobe_instance *ri, void __kprobes kretprobe_hash_lock(struct task_struct *tsk, struct hlist_head **head, unsigned long *flags) +__acquires(hlist_lock) { unsigned long hash = hash_ptr(tsk, KPROBE_HASH_BITS); spinlock_t *hlist_lock; @@ -842,6 +844,7 @@ void __kprobes kretprobe_hash_lock(struct task_struct *tsk, static void __kprobes kretprobe_table_lock(unsigned long hash, unsigned long *flags) +__acquires(hlist_lock) { spinlock_t *hlist_lock = kretprobe_table_lock_ptr(hash); spin_lock_irqsave(hlist_lock, *flags); @@ -849,6 +852,7 @@ static void __kprobes kretprobe_table_lock(unsigned long hash, void __kprobes kretprobe_hash_unlock(struct task_struct *tsk, unsigned long *flags) +__releases(hlist_lock) { unsigned long hash = hash_ptr(tsk, KPROBE_HASH_BITS); spinlock_t *hlist_lock; @@ -857,7 +861,9 @@ void __kprobes kretprobe_hash_unlock(struct task_struct *tsk, spin_unlock_irqrestore(hlist_lock, *flags); } -void __kprobes kretprobe_table_unlock(unsigned long hash, unsigned long *flags) +static void __kprobes kretprobe_table_unlock(unsigned long hash, + unsigned long *flags) +__releases(hlist_lock) { spinlock_t *hlist_lock = kretprobe_table_lock_ptr(hash); spin_unlock_irqrestore(hlist_lock, *flags); @@ -1141,7 +1147,8 @@ int __kprobes register_kprobe(struct kprobe *p) preempt_disable(); if (!kernel_text_address((unsigned long) p->addr) || in_kprobes_functions((unsigned long) p->addr) || - ftrace_text_reserved(p->addr, p->addr)) { + ftrace_text_reserved(p->addr, p->addr) || + jump_label_text_reserved(p->addr, p->addr)) { preempt_enable(); return -EINVAL; } @@ -1339,18 +1346,19 @@ int __kprobes register_jprobes(struct jprobe **jps, int num) if (num <= 0) return -EINVAL; for (i = 0; i < num; i++) { - unsigned long addr; + unsigned long addr, offset; jp = jps[i]; addr = arch_deref_entry_point(jp->entry); - if (!kernel_text_address(addr)) - ret = -EINVAL; - else { - /* Todo: Verify probepoint is a function entry point */ + /* Verify probepoint is a function entry point */ + if (kallsyms_lookup_size_offset(addr, NULL, &offset) && + offset == 0) { jp->kp.pre_handler = setjmp_pre_handler; jp->kp.break_handler = longjmp_break_handler; ret = register_kprobe(&jp->kp); - } + } else + ret = -EINVAL; + if (ret < 0) { if (i > 0) unregister_jprobes(jps, i); diff --git a/kernel/lockdep.c b/kernel/lockdep.c index f2852a510232..42ba65dff7d9 100644 --- a/kernel/lockdep.c +++ b/kernel/lockdep.c @@ -639,6 +639,16 @@ look_up_lock_class(struct lockdep_map *lock, unsigned int subclass) } #endif + if (unlikely(subclass >= MAX_LOCKDEP_SUBCLASSES)) { + debug_locks_off(); + printk(KERN_ERR + "BUG: looking up invalid subclass: %u\n", subclass); + printk(KERN_ERR + "turning off the locking correctness validator.\n"); + dump_stack(); + return NULL; + } + /* * Static locks do not have their class-keys yet - for them the key * is the lock object itself: @@ -774,7 +784,9 @@ out_unlock_set: raw_local_irq_restore(flags); if (!subclass || force) - lock->class_cache = class; + lock->class_cache[0] = class; + else if (subclass < NR_LOCKDEP_CACHING_CLASSES) + lock->class_cache[subclass] = class; if (DEBUG_LOCKS_WARN_ON(class->subclass != subclass)) return NULL; @@ -2679,7 +2691,11 @@ static int mark_lock(struct task_struct *curr, struct held_lock *this, void lockdep_init_map(struct lockdep_map *lock, const char *name, struct lock_class_key *key, int subclass) { - lock->class_cache = NULL; + int i; + + for (i = 0; i < NR_LOCKDEP_CACHING_CLASSES; i++) + lock->class_cache[i] = NULL; + #ifdef CONFIG_LOCK_STAT lock->cpu = raw_smp_processor_id(); #endif @@ -2739,21 +2755,13 @@ static int __lock_acquire(struct lockdep_map *lock, unsigned int subclass, if (DEBUG_LOCKS_WARN_ON(!irqs_disabled())) return 0; - if (unlikely(subclass >= MAX_LOCKDEP_SUBCLASSES)) { - debug_locks_off(); - printk("BUG: MAX_LOCKDEP_SUBCLASSES too low!\n"); - printk("turning off the locking correctness validator.\n"); - dump_stack(); - return 0; - } - if (lock->key == &__lockdep_no_validate__) check = 1; - if (!subclass) - class = lock->class_cache; + if (subclass < NR_LOCKDEP_CACHING_CLASSES) + class = lock->class_cache[subclass]; /* - * Not cached yet or subclass? + * Not cached? */ if (unlikely(!class)) { class = register_lock_class(lock, subclass, 0); @@ -2918,7 +2926,7 @@ static int match_held_lock(struct held_lock *hlock, struct lockdep_map *lock) return 1; if (hlock->references) { - struct lock_class *class = lock->class_cache; + struct lock_class *class = lock->class_cache[0]; if (!class) class = look_up_lock_class(lock, 0); @@ -3559,7 +3567,12 @@ void lockdep_reset_lock(struct lockdep_map *lock) if (list_empty(head)) continue; list_for_each_entry_safe(class, next, head, hash_entry) { - if (unlikely(class == lock->class_cache)) { + int match = 0; + + for (j = 0; j < NR_LOCKDEP_CACHING_CLASSES; j++) + match |= class == lock->class_cache[j]; + + if (unlikely(match)) { if (debug_locks_off_graph_unlock()) WARN_ON(1); goto out_restore; @@ -3775,7 +3788,7 @@ EXPORT_SYMBOL_GPL(debug_show_all_locks); * Careful: only use this function if you are sure that * the task cannot run in parallel! */ -void __debug_show_held_locks(struct task_struct *task) +void debug_show_held_locks(struct task_struct *task) { if (unlikely(!debug_locks)) { printk("INFO: lockdep is turned off.\n"); @@ -3783,12 +3796,6 @@ void __debug_show_held_locks(struct task_struct *task) } lockdep_print_held_locks(task); } -EXPORT_SYMBOL_GPL(__debug_show_held_locks); - -void debug_show_held_locks(struct task_struct *task) -{ - __debug_show_held_locks(task); -} EXPORT_SYMBOL_GPL(debug_show_held_locks); void lockdep_sys_exit(void) diff --git a/kernel/module.c b/kernel/module.c index ccd641991842..2df46301a7a4 100644 --- a/kernel/module.c +++ b/kernel/module.c @@ -55,6 +55,7 @@ #include <linux/async.h> #include <linux/percpu.h> #include <linux/kmemleak.h> +#include <linux/jump_label.h> #define CREATE_TRACE_POINTS #include <trace/events/module.h> @@ -2309,6 +2310,11 @@ static void find_module_sections(struct module *mod, struct load_info *info) sizeof(*mod->tracepoints), &mod->num_tracepoints); #endif +#ifdef HAVE_JUMP_LABEL + mod->jump_entries = section_objs(info, "__jump_table", + sizeof(*mod->jump_entries), + &mod->num_jump_entries); +#endif #ifdef CONFIG_EVENT_TRACING mod->trace_events = section_objs(info, "_ftrace_events", sizeof(*mod->trace_events), diff --git a/kernel/perf_event.c b/kernel/perf_event.c index b98bed3d8182..f309e8014c78 100644 --- a/kernel/perf_event.c +++ b/kernel/perf_event.c @@ -31,24 +31,18 @@ #include <linux/kernel_stat.h> #include <linux/perf_event.h> #include <linux/ftrace_event.h> -#include <linux/hw_breakpoint.h> #include <asm/irq_regs.h> -/* - * Each CPU has a list of per CPU events: - */ -static DEFINE_PER_CPU(struct perf_cpu_context, perf_cpu_context); - -int perf_max_events __read_mostly = 1; -static int perf_reserved_percpu __read_mostly; -static int perf_overcommit __read_mostly = 1; - -static atomic_t nr_events __read_mostly; +atomic_t perf_task_events __read_mostly; static atomic_t nr_mmap_events __read_mostly; static atomic_t nr_comm_events __read_mostly; static atomic_t nr_task_events __read_mostly; +static LIST_HEAD(pmus); +static DEFINE_MUTEX(pmus_lock); +static struct srcu_struct pmus_srcu; + /* * perf event paranoia level: * -1 - not paranoid at all @@ -67,36 +61,43 @@ int sysctl_perf_event_sample_rate __read_mostly = 100000; static atomic64_t perf_event_id; -/* - * Lock for (sysadmin-configurable) event reservations: - */ -static DEFINE_SPINLOCK(perf_resource_lock); +void __weak perf_event_print_debug(void) { } -/* - * Architecture provided APIs - weak aliases: - */ -extern __weak const struct pmu *hw_perf_event_init(struct perf_event *event) +extern __weak const char *perf_pmu_name(void) { - return NULL; + return "pmu"; } -void __weak hw_perf_disable(void) { barrier(); } -void __weak hw_perf_enable(void) { barrier(); } - -void __weak perf_event_print_debug(void) { } - -static DEFINE_PER_CPU(int, perf_disable_count); +void perf_pmu_disable(struct pmu *pmu) +{ + int *count = this_cpu_ptr(pmu->pmu_disable_count); + if (!(*count)++) + pmu->pmu_disable(pmu); +} -void perf_disable(void) +void perf_pmu_enable(struct pmu *pmu) { - if (!__get_cpu_var(perf_disable_count)++) - hw_perf_disable(); + int *count = this_cpu_ptr(pmu->pmu_disable_count); + if (!--(*count)) + pmu->pmu_enable(pmu); } -void perf_enable(void) +static DEFINE_PER_CPU(struct list_head, rotation_list); + +/* + * perf_pmu_rotate_start() and perf_rotate_context() are fully serialized + * because they're strictly cpu affine and rotate_start is called with IRQs + * disabled, while rotate_context is called from IRQ context. + */ +static void perf_pmu_rotate_start(struct pmu *pmu) { - if (!--__get_cpu_var(perf_disable_count)) - hw_perf_enable(); + struct perf_cpu_context *cpuctx = this_cpu_ptr(pmu->pmu_cpu_context); + struct list_head *head = &__get_cpu_var(rotation_list); + + WARN_ON(!irqs_disabled()); + + if (list_empty(&cpuctx->rotation_list)) + list_add(&cpuctx->rotation_list, head); } static void get_ctx(struct perf_event_context *ctx) @@ -151,13 +152,13 @@ static u64 primary_event_id(struct perf_event *event) * the context could get moved to another task. */ static struct perf_event_context * -perf_lock_task_context(struct task_struct *task, unsigned long *flags) +perf_lock_task_context(struct task_struct *task, int ctxn, unsigned long *flags) { struct perf_event_context *ctx; rcu_read_lock(); - retry: - ctx = rcu_dereference(task->perf_event_ctxp); +retry: + ctx = rcu_dereference(task->perf_event_ctxp[ctxn]); if (ctx) { /* * If this context is a clone of another, it might @@ -170,7 +171,7 @@ perf_lock_task_context(struct task_struct *task, unsigned long *flags) * can't get swapped on us any more. */ raw_spin_lock_irqsave(&ctx->lock, *flags); - if (ctx != rcu_dereference(task->perf_event_ctxp)) { + if (ctx != rcu_dereference(task->perf_event_ctxp[ctxn])) { raw_spin_unlock_irqrestore(&ctx->lock, *flags); goto retry; } @@ -189,12 +190,13 @@ perf_lock_task_context(struct task_struct *task, unsigned long *flags) * can't get swapped to another task. This also increments its * reference count so that the context can't get freed. */ -static struct perf_event_context *perf_pin_task_context(struct task_struct *task) +static struct perf_event_context * +perf_pin_task_context(struct task_struct *task, int ctxn) { struct perf_event_context *ctx; unsigned long flags; - ctx = perf_lock_task_context(task, &flags); + ctx = perf_lock_task_context(task, ctxn, &flags); if (ctx) { ++ctx->pin_count; raw_spin_unlock_irqrestore(&ctx->lock, flags); @@ -302,6 +304,8 @@ list_add_event(struct perf_event *event, struct perf_event_context *ctx) } list_add_rcu(&event->event_entry, &ctx->event_list); + if (!ctx->nr_events) + perf_pmu_rotate_start(ctx->pmu); ctx->nr_events++; if (event->attr.inherit_stat) ctx->nr_stat++; @@ -311,7 +315,12 @@ static void perf_group_attach(struct perf_event *event) { struct perf_event *group_leader = event->group_leader; - WARN_ON_ONCE(event->attach_state & PERF_ATTACH_GROUP); + /* + * We can have double attach due to group movement in perf_event_open. + */ + if (event->attach_state & PERF_ATTACH_GROUP) + return; + event->attach_state |= PERF_ATTACH_GROUP; if (group_leader == event) @@ -408,8 +417,8 @@ event_filter_match(struct perf_event *event) return event->cpu == -1 || event->cpu == smp_processor_id(); } -static void -event_sched_out(struct perf_event *event, +static int +__event_sched_out(struct perf_event *event, struct perf_cpu_context *cpuctx, struct perf_event_context *ctx) { @@ -428,15 +437,14 @@ event_sched_out(struct perf_event *event, } if (event->state != PERF_EVENT_STATE_ACTIVE) - return; + return 0; event->state = PERF_EVENT_STATE_INACTIVE; if (event->pending_disable) { event->pending_disable = 0; event->state = PERF_EVENT_STATE_OFF; } - event->tstamp_stopped = ctx->time; - event->pmu->disable(event); + event->pmu->del(event, 0); event->oncpu = -1; if (!is_software_event(event)) @@ -444,6 +452,19 @@ event_sched_out(struct perf_event *event, ctx->nr_active--; if (event->attr.exclusive || !cpuctx->active_oncpu) cpuctx->exclusive = 0; + return 1; +} + +static void +event_sched_out(struct perf_event *event, + struct perf_cpu_context *cpuctx, + struct perf_event_context *ctx) +{ + int ret; + + ret = __event_sched_out(event, cpuctx, ctx); + if (ret) + event->tstamp_stopped = ctx->time; } static void @@ -466,6 +487,12 @@ group_sched_out(struct perf_event *group_event, cpuctx->exclusive = 0; } +static inline struct perf_cpu_context * +__get_cpu_context(struct perf_event_context *ctx) +{ + return this_cpu_ptr(ctx->pmu->pmu_cpu_context); +} + /* * Cross CPU call to remove a performance event * @@ -474,9 +501,9 @@ group_sched_out(struct perf_event *group_event, */ static void __perf_event_remove_from_context(void *info) { - struct perf_cpu_context *cpuctx = &__get_cpu_var(perf_cpu_context); struct perf_event *event = info; struct perf_event_context *ctx = event->ctx; + struct perf_cpu_context *cpuctx = __get_cpu_context(ctx); /* * If this is a task context, we need to check whether it is @@ -487,27 +514,11 @@ static void __perf_event_remove_from_context(void *info) return; raw_spin_lock(&ctx->lock); - /* - * Protect the list operation against NMI by disabling the - * events on a global level. - */ - perf_disable(); event_sched_out(event, cpuctx, ctx); list_del_event(event, ctx); - if (!ctx->task) { - /* - * Allow more per task events with respect to the - * reservation: - */ - cpuctx->max_pertask = - min(perf_max_events - ctx->nr_events, - perf_max_events - perf_reserved_percpu); - } - - perf_enable(); raw_spin_unlock(&ctx->lock); } @@ -572,8 +583,8 @@ retry: static void __perf_event_disable(void *info) { struct perf_event *event = info; - struct perf_cpu_context *cpuctx = &__get_cpu_var(perf_cpu_context); struct perf_event_context *ctx = event->ctx; + struct perf_cpu_context *cpuctx = __get_cpu_context(ctx); /* * If this is a per-task event, need to check whether this @@ -628,7 +639,7 @@ void perf_event_disable(struct perf_event *event) return; } - retry: +retry: task_oncpu_function_call(task, __perf_event_disable, event); raw_spin_lock_irq(&ctx->lock); @@ -653,7 +664,7 @@ void perf_event_disable(struct perf_event *event) } static int -event_sched_in(struct perf_event *event, +__event_sched_in(struct perf_event *event, struct perf_cpu_context *cpuctx, struct perf_event_context *ctx) { @@ -667,14 +678,12 @@ event_sched_in(struct perf_event *event, */ smp_wmb(); - if (event->pmu->enable(event)) { + if (event->pmu->add(event, PERF_EF_START)) { event->state = PERF_EVENT_STATE_INACTIVE; event->oncpu = -1; return -EAGAIN; } - event->tstamp_running += ctx->time - event->tstamp_stopped; - if (!is_software_event(event)) cpuctx->active_oncpu++; ctx->nr_active++; @@ -685,28 +694,56 @@ event_sched_in(struct perf_event *event, return 0; } +static inline int +event_sched_in(struct perf_event *event, + struct perf_cpu_context *cpuctx, + struct perf_event_context *ctx) +{ + int ret = __event_sched_in(event, cpuctx, ctx); + if (ret) + return ret; + event->tstamp_running += ctx->time - event->tstamp_stopped; + return 0; +} + +static void +group_commit_event_sched_in(struct perf_event *group_event, + struct perf_cpu_context *cpuctx, + struct perf_event_context *ctx) +{ + struct perf_event *event; + u64 now = ctx->time; + + group_event->tstamp_running += now - group_event->tstamp_stopped; + /* + * Schedule in siblings as one group (if any): + */ + list_for_each_entry(event, &group_event->sibling_list, group_entry) { + event->tstamp_running += now - event->tstamp_stopped; + } +} + static int group_sched_in(struct perf_event *group_event, struct perf_cpu_context *cpuctx, struct perf_event_context *ctx) { struct perf_event *event, *partial_group = NULL; - const struct pmu *pmu = group_event->pmu; - bool txn = false; + struct pmu *pmu = group_event->pmu; if (group_event->state == PERF_EVENT_STATE_OFF) return 0; - /* Check if group transaction availabe */ - if (pmu->start_txn) - txn = true; + pmu->start_txn(pmu); - if (txn) - pmu->start_txn(pmu); - - if (event_sched_in(group_event, cpuctx, ctx)) { - if (txn) - pmu->cancel_txn(pmu); + /* + * use __event_sched_in() to delay updating tstamp_running + * until the transaction is committed. In case of failure + * we will keep an unmodified tstamp_running which is a + * requirement to get correct timing information + */ + if (__event_sched_in(group_event, cpuctx, ctx)) { + pmu->cancel_txn(pmu); return -EAGAIN; } @@ -714,29 +751,33 @@ group_sched_in(struct perf_event *group_event, * Schedule in siblings as one group (if any): */ list_for_each_entry(event, &group_event->sibling_list, group_entry) { - if (event_sched_in(event, cpuctx, ctx)) { + if (__event_sched_in(event, cpuctx, ctx)) { partial_group = event; goto group_error; } } - if (!txn || !pmu->commit_txn(pmu)) + if (!pmu->commit_txn(pmu)) { + /* commit tstamp_running */ + group_commit_event_sched_in(group_event, cpuctx, ctx); return 0; - + } group_error: /* * Groups can be scheduled in as one unit only, so undo any * partial group before returning: + * + * use __event_sched_out() to avoid updating tstamp_stopped + * because the event never actually ran */ list_for_each_entry(event, &group_event->sibling_list, group_entry) { if (event == partial_group) break; - event_sched_out(event, cpuctx, ctx); + __event_sched_out(event, cpuctx, ctx); } - event_sched_out(group_event, cpuctx, ctx); + __event_sched_out(group_event, cpuctx, ctx); - if (txn) - pmu->cancel_txn(pmu); + pmu->cancel_txn(pmu); return -EAGAIN; } @@ -789,10 +830,10 @@ static void add_event_to_ctx(struct perf_event *event, */ static void __perf_install_in_context(void *info) { - struct perf_cpu_context *cpuctx = &__get_cpu_var(perf_cpu_context); struct perf_event *event = info; struct perf_event_context *ctx = event->ctx; struct perf_event *leader = event->group_leader; + struct perf_cpu_context *cpuctx = __get_cpu_context(ctx); int err; /* @@ -812,12 +853,6 @@ static void __perf_install_in_context(void *info) ctx->is_active = 1; update_context_time(ctx); - /* - * Protect the list operation against NMI by disabling the - * events on a global level. NOP for non NMI based events. - */ - perf_disable(); - add_event_to_ctx(event, ctx); if (event->cpu != -1 && event->cpu != smp_processor_id()) @@ -855,12 +890,7 @@ static void __perf_install_in_context(void *info) } } - if (!err && !ctx->task && cpuctx->max_pertask) - cpuctx->max_pertask--; - - unlock: - perf_enable(); - +unlock: raw_spin_unlock(&ctx->lock); } @@ -883,6 +913,8 @@ perf_install_in_context(struct perf_event_context *ctx, { struct task_struct *task = ctx->task; + event->ctx = ctx; + if (!task) { /* * Per cpu events are installed via an smp call and @@ -931,10 +963,12 @@ static void __perf_event_mark_enabled(struct perf_event *event, event->state = PERF_EVENT_STATE_INACTIVE; event->tstamp_enabled = ctx->time - event->total_time_enabled; - list_for_each_entry(sub, &event->sibling_list, group_entry) - if (sub->state >= PERF_EVENT_STATE_INACTIVE) + list_for_each_entry(sub, &event->sibling_list, group_entry) { + if (sub->state >= PERF_EVENT_STATE_INACTIVE) { sub->tstamp_enabled = ctx->time - sub->total_time_enabled; + } + } } /* @@ -943,9 +977,9 @@ static void __perf_event_mark_enabled(struct perf_event *event, static void __perf_event_enable(void *info) { struct perf_event *event = info; - struct perf_cpu_context *cpuctx = &__get_cpu_var(perf_cpu_context); struct perf_event_context *ctx = event->ctx; struct perf_event *leader = event->group_leader; + struct perf_cpu_context *cpuctx = __get_cpu_context(ctx); int err; /* @@ -979,12 +1013,10 @@ static void __perf_event_enable(void *info) if (!group_can_go_on(event, cpuctx, 1)) { err = -EEXIST; } else { - perf_disable(); if (event == leader) err = group_sched_in(event, cpuctx, ctx); else err = event_sched_in(event, cpuctx, ctx); - perf_enable(); } if (err) { @@ -1000,7 +1032,7 @@ static void __perf_event_enable(void *info) } } - unlock: +unlock: raw_spin_unlock(&ctx->lock); } @@ -1041,7 +1073,7 @@ void perf_event_enable(struct perf_event *event) if (event->state == PERF_EVENT_STATE_ERROR) event->state = PERF_EVENT_STATE_OFF; - retry: +retry: raw_spin_unlock_irq(&ctx->lock); task_oncpu_function_call(task, __perf_event_enable, event); @@ -1061,7 +1093,7 @@ void perf_event_enable(struct perf_event *event) if (event->state == PERF_EVENT_STATE_OFF) __perf_event_mark_enabled(event, ctx); - out: +out: raw_spin_unlock_irq(&ctx->lock); } @@ -1092,26 +1124,26 @@ static void ctx_sched_out(struct perf_event_context *ctx, struct perf_event *event; raw_spin_lock(&ctx->lock); + perf_pmu_disable(ctx->pmu); ctx->is_active = 0; if (likely(!ctx->nr_events)) goto out; update_context_time(ctx); - perf_disable(); if (!ctx->nr_active) - goto out_enable; + goto out; - if (event_type & EVENT_PINNED) + if (event_type & EVENT_PINNED) { list_for_each_entry(event, &ctx->pinned_groups, group_entry) group_sched_out(event, cpuctx, ctx); + } - if (event_type & EVENT_FLEXIBLE) + if (event_type & EVENT_FLEXIBLE) { list_for_each_entry(event, &ctx->flexible_groups, group_entry) group_sched_out(event, cpuctx, ctx); - - out_enable: - perf_enable(); - out: + } +out: + perf_pmu_enable(ctx->pmu); raw_spin_unlock(&ctx->lock); } @@ -1209,34 +1241,25 @@ static void perf_event_sync_stat(struct perf_event_context *ctx, } } -/* - * Called from scheduler to remove the events of the current task, - * with interrupts disabled. - * - * We stop each event and update the event value in event->count. - * - * This does not protect us against NMI, but disable() - * sets the disabled bit in the control field of event _before_ - * accessing the event control register. If a NMI hits, then it will - * not restart the event. - */ -void perf_event_task_sched_out(struct task_struct *task, - struct task_struct *next) +void perf_event_context_sched_out(struct task_struct *task, int ctxn, + struct task_struct *next) { - struct perf_cpu_context *cpuctx = &__get_cpu_var(perf_cpu_context); - struct perf_event_context *ctx = task->perf_event_ctxp; + struct perf_event_context *ctx = task->perf_event_ctxp[ctxn]; struct perf_event_context *next_ctx; struct perf_event_context *parent; + struct perf_cpu_context *cpuctx; int do_switch = 1; - perf_sw_event(PERF_COUNT_SW_CONTEXT_SWITCHES, 1, 1, NULL, 0); + if (likely(!ctx)) + return; - if (likely(!ctx || !cpuctx->task_ctx)) + cpuctx = __get_cpu_context(ctx); + if (!cpuctx->task_ctx) return; rcu_read_lock(); parent = rcu_dereference(ctx->parent_ctx); - next_ctx = next->perf_event_ctxp; + next_ctx = next->perf_event_ctxp[ctxn]; if (parent && next_ctx && rcu_dereference(next_ctx->parent_ctx) == parent) { /* @@ -1255,8 +1278,8 @@ void perf_event_task_sched_out(struct task_struct *task, * XXX do we need a memory barrier of sorts * wrt to rcu_dereference() of perf_event_ctxp */ - task->perf_event_ctxp = next_ctx; - next->perf_event_ctxp = ctx; + task->perf_event_ctxp[ctxn] = next_ctx; + next->perf_event_ctxp[ctxn] = ctx; ctx->task = next; next_ctx->task = task; do_switch = 0; @@ -1274,10 +1297,35 @@ void perf_event_task_sched_out(struct task_struct *task, } } +#define for_each_task_context_nr(ctxn) \ + for ((ctxn) = 0; (ctxn) < perf_nr_task_contexts; (ctxn)++) + +/* + * Called from scheduler to remove the events of the current task, + * with interrupts disabled. + * + * We stop each event and update the event value in event->count. + * + * This does not protect us against NMI, but disable() + * sets the disabled bit in the control field of event _before_ + * accessing the event control register. If a NMI hits, then it will + * not restart the event. + */ +void __perf_event_task_sched_out(struct task_struct *task, + struct task_struct *next) +{ + int ctxn; + + perf_sw_event(PERF_COUNT_SW_CONTEXT_SWITCHES, 1, 1, NULL, 0); + + for_each_task_context_nr(ctxn) + perf_event_context_sched_out(task, ctxn, next); +} + static void task_ctx_sched_out(struct perf_event_context *ctx, enum event_type_t event_type) { - struct perf_cpu_context *cpuctx = &__get_cpu_var(perf_cpu_context); + struct perf_cpu_context *cpuctx = __get_cpu_context(ctx); if (!cpuctx->task_ctx) return; @@ -1292,14 +1340,6 @@ static void task_ctx_sched_out(struct perf_event_context *ctx, /* * Called with IRQs disabled */ -static void __perf_event_task_sched_out(struct perf_event_context *ctx) -{ - task_ctx_sched_out(ctx, EVENT_ALL); -} - -/* - * Called with IRQs disabled - */ static void cpu_ctx_sched_out(struct perf_cpu_context *cpuctx, enum event_type_t event_type) { @@ -1350,9 +1390,10 @@ ctx_flexible_sched_in(struct perf_event_context *ctx, if (event->cpu != -1 && event->cpu != smp_processor_id()) continue; - if (group_can_go_on(event, cpuctx, can_add_hw)) + if (group_can_go_on(event, cpuctx, can_add_hw)) { if (group_sched_in(event, cpuctx, ctx)) can_add_hw = 0; + } } } @@ -1368,8 +1409,6 @@ ctx_sched_in(struct perf_event_context *ctx, ctx->timestamp = perf_clock(); - perf_disable(); - /* * First go through the list and put on any pinned groups * in order to give them the best chance of going on. @@ -1381,8 +1420,7 @@ ctx_sched_in(struct perf_event_context *ctx, if (event_type & EVENT_FLEXIBLE) ctx_flexible_sched_in(ctx, cpuctx); - perf_enable(); - out: +out: raw_spin_unlock(&ctx->lock); } @@ -1394,43 +1432,28 @@ static void cpu_ctx_sched_in(struct perf_cpu_context *cpuctx, ctx_sched_in(ctx, cpuctx, event_type); } -static void task_ctx_sched_in(struct task_struct *task, +static void task_ctx_sched_in(struct perf_event_context *ctx, enum event_type_t event_type) { - struct perf_cpu_context *cpuctx = &__get_cpu_var(perf_cpu_context); - struct perf_event_context *ctx = task->perf_event_ctxp; + struct perf_cpu_context *cpuctx; - if (likely(!ctx)) - return; + cpuctx = __get_cpu_context(ctx); if (cpuctx->task_ctx == ctx) return; + ctx_sched_in(ctx, cpuctx, event_type); cpuctx->task_ctx = ctx; } -/* - * Called from scheduler to add the events of the current task - * with interrupts disabled. - * - * We restore the event value and then enable it. - * - * This does not protect us against NMI, but enable() - * sets the enabled bit in the control field of event _before_ - * accessing the event control register. If a NMI hits, then it will - * keep the event running. - */ -void perf_event_task_sched_in(struct task_struct *task) -{ - struct perf_cpu_context *cpuctx = &__get_cpu_var(perf_cpu_context); - struct perf_event_context *ctx = task->perf_event_ctxp; - if (likely(!ctx)) - return; +void perf_event_context_sched_in(struct perf_event_context *ctx) +{ + struct perf_cpu_context *cpuctx; + cpuctx = __get_cpu_context(ctx); if (cpuctx->task_ctx == ctx) return; - perf_disable(); - + perf_pmu_disable(ctx->pmu); /* * We want to keep the following priority order: * cpu pinned (that don't need to move), task pinned, @@ -1444,7 +1467,37 @@ void perf_event_task_sched_in(struct task_struct *task) cpuctx->task_ctx = ctx; - perf_enable(); + /* + * Since these rotations are per-cpu, we need to ensure the + * cpu-context we got scheduled on is actually rotating. + */ + perf_pmu_rotate_start(ctx->pmu); + perf_pmu_enable(ctx->pmu); +} + +/* + * Called from scheduler to add the events of the current task + * with interrupts disabled. + * + * We restore the event value and then enable it. + * + * This does not protect us against NMI, but enable() + * sets the enabled bit in the control field of event _before_ + * accessing the event control register. If a NMI hits, then it will + * keep the event running. + */ +void __perf_event_task_sched_in(struct task_struct *task) +{ + struct perf_event_context *ctx; + int ctxn; + + for_each_task_context_nr(ctxn) { + ctx = task->perf_event_ctxp[ctxn]; + if (likely(!ctx)) + continue; + + perf_event_context_sched_in(ctx); + } } #define MAX_INTERRUPTS (~0ULL) @@ -1524,22 +1577,6 @@ do { \ return div64_u64(dividend, divisor); } -static void perf_event_stop(struct perf_event *event) -{ - if (!event->pmu->stop) - return event->pmu->disable(event); - - return event->pmu->stop(event); -} - -static int perf_event_start(struct perf_event *event) -{ - if (!event->pmu->start) - return event->pmu->enable(event); - - return event->pmu->start(event); -} - static void perf_adjust_period(struct perf_event *event, u64 nsec, u64 count) { struct hw_perf_event *hwc = &event->hw; @@ -1559,15 +1596,13 @@ static void perf_adjust_period(struct perf_event *event, u64 nsec, u64 count) hwc->sample_period = sample_period; if (local64_read(&hwc->period_left) > 8*sample_period) { - perf_disable(); - perf_event_stop(event); + event->pmu->stop(event, PERF_EF_UPDATE); local64_set(&hwc->period_left, 0); - perf_event_start(event); - perf_enable(); + event->pmu->start(event, PERF_EF_RELOAD); } } -static void perf_ctx_adjust_freq(struct perf_event_context *ctx) +static void perf_ctx_adjust_freq(struct perf_event_context *ctx, u64 period) { struct perf_event *event; struct hw_perf_event *hwc; @@ -1592,23 +1627,19 @@ static void perf_ctx_adjust_freq(struct perf_event_context *ctx) */ if (interrupts == MAX_INTERRUPTS) { perf_log_throttle(event, 1); - perf_disable(); - event->pmu->unthrottle(event); - perf_enable(); + event->pmu->start(event, 0); } if (!event->attr.freq || !event->attr.sample_freq) continue; - perf_disable(); event->pmu->read(event); now = local64_read(&event->count); delta = now - hwc->freq_count_stamp; hwc->freq_count_stamp = now; if (delta > 0) - perf_adjust_period(event, TICK_NSEC, delta); - perf_enable(); + perf_adjust_period(event, period, delta); } raw_spin_unlock(&ctx->lock); } @@ -1626,32 +1657,38 @@ static void rotate_ctx(struct perf_event_context *ctx) raw_spin_unlock(&ctx->lock); } -void perf_event_task_tick(struct task_struct *curr) +/* + * perf_pmu_rotate_start() and perf_rotate_context() are fully serialized + * because they're strictly cpu affine and rotate_start is called with IRQs + * disabled, while rotate_context is called from IRQ context. + */ +static void perf_rotate_context(struct perf_cpu_context *cpuctx) { - struct perf_cpu_context *cpuctx; - struct perf_event_context *ctx; - int rotate = 0; - - if (!atomic_read(&nr_events)) - return; + u64 interval = (u64)cpuctx->jiffies_interval * TICK_NSEC; + struct perf_event_context *ctx = NULL; + int rotate = 0, remove = 1; - cpuctx = &__get_cpu_var(perf_cpu_context); - if (cpuctx->ctx.nr_events && - cpuctx->ctx.nr_events != cpuctx->ctx.nr_active) - rotate = 1; + if (cpuctx->ctx.nr_events) { + remove = 0; + if (cpuctx->ctx.nr_events != cpuctx->ctx.nr_active) + rotate = 1; + } - ctx = curr->perf_event_ctxp; - if (ctx && ctx->nr_events && ctx->nr_events != ctx->nr_active) - rotate = 1; + ctx = cpuctx->task_ctx; + if (ctx && ctx->nr_events) { + remove = 0; + if (ctx->nr_events != ctx->nr_active) + rotate = 1; + } - perf_ctx_adjust_freq(&cpuctx->ctx); + perf_pmu_disable(cpuctx->ctx.pmu); + perf_ctx_adjust_freq(&cpuctx->ctx, interval); if (ctx) - perf_ctx_adjust_freq(ctx); + perf_ctx_adjust_freq(ctx, interval); if (!rotate) - return; + goto done; - perf_disable(); cpu_ctx_sched_out(cpuctx, EVENT_FLEXIBLE); if (ctx) task_ctx_sched_out(ctx, EVENT_FLEXIBLE); @@ -1662,8 +1699,27 @@ void perf_event_task_tick(struct task_struct *curr) cpu_ctx_sched_in(cpuctx, EVENT_FLEXIBLE); if (ctx) - task_ctx_sched_in(curr, EVENT_FLEXIBLE); - perf_enable(); + task_ctx_sched_in(ctx, EVENT_FLEXIBLE); + +done: + if (remove) + list_del_init(&cpuctx->rotation_list); + + perf_pmu_enable(cpuctx->ctx.pmu); +} + +void perf_event_task_tick(void) +{ + struct list_head *head = &__get_cpu_var(rotation_list); + struct perf_cpu_context *cpuctx, *tmp; + + WARN_ON(!irqs_disabled()); + + list_for_each_entry_safe(cpuctx, tmp, head, rotation_list) { + if (cpuctx->jiffies_interval == 1 || + !(jiffies % cpuctx->jiffies_interval)) + perf_rotate_context(cpuctx); + } } static int event_enable_on_exec(struct perf_event *event, @@ -1685,20 +1741,18 @@ static int event_enable_on_exec(struct perf_event *event, * Enable all of a task's events that have been marked enable-on-exec. * This expects task == current. */ -static void perf_event_enable_on_exec(struct task_struct *task) +static void perf_event_enable_on_exec(struct perf_event_context *ctx) { - struct perf_event_context *ctx; struct perf_event *event; unsigned long flags; int enabled = 0; int ret; local_irq_save(flags); - ctx = task->perf_event_ctxp; if (!ctx || !ctx->nr_events) goto out; - __perf_event_task_sched_out(ctx); + task_ctx_sched_out(ctx, EVENT_ALL); raw_spin_lock(&ctx->lock); @@ -1722,8 +1776,8 @@ static void perf_event_enable_on_exec(struct task_struct *task) raw_spin_unlock(&ctx->lock); - perf_event_task_sched_in(task); - out: + perf_event_context_sched_in(ctx); +out: local_irq_restore(flags); } @@ -1732,9 +1786,9 @@ static void perf_event_enable_on_exec(struct task_struct *task) */ static void __perf_event_read(void *info) { - struct perf_cpu_context *cpuctx = &__get_cpu_var(perf_cpu_context); struct perf_event *event = info; struct perf_event_context *ctx = event->ctx; + struct perf_cpu_context *cpuctx = __get_cpu_context(ctx); /* * If this is a task context, we need to check whether it is @@ -1773,7 +1827,13 @@ static u64 perf_event_read(struct perf_event *event) unsigned long flags; raw_spin_lock_irqsave(&ctx->lock, flags); - update_context_time(ctx); + /* + * may read while context is not active + * (e.g., thread is blocked), in that case + * we cannot update context time + */ + if (ctx->is_active) + update_context_time(ctx); update_event_times(event); raw_spin_unlock_irqrestore(&ctx->lock, flags); } @@ -1782,11 +1842,219 @@ static u64 perf_event_read(struct perf_event *event) } /* - * Initialize the perf_event context in a task_struct: + * Callchain support */ + +struct callchain_cpus_entries { + struct rcu_head rcu_head; + struct perf_callchain_entry *cpu_entries[0]; +}; + +static DEFINE_PER_CPU(int, callchain_recursion[PERF_NR_CONTEXTS]); +static atomic_t nr_callchain_events; +static DEFINE_MUTEX(callchain_mutex); +struct callchain_cpus_entries *callchain_cpus_entries; + + +__weak void perf_callchain_kernel(struct perf_callchain_entry *entry, + struct pt_regs *regs) +{ +} + +__weak void perf_callchain_user(struct perf_callchain_entry *entry, + struct pt_regs *regs) +{ +} + +static void release_callchain_buffers_rcu(struct rcu_head *head) +{ + struct callchain_cpus_entries *entries; + int cpu; + + entries = container_of(head, struct callchain_cpus_entries, rcu_head); + + for_each_possible_cpu(cpu) + kfree(entries->cpu_entries[cpu]); + + kfree(entries); +} + +static void release_callchain_buffers(void) +{ + struct callchain_cpus_entries *entries; + + entries = callchain_cpus_entries; + rcu_assign_pointer(callchain_cpus_entries, NULL); + call_rcu(&entries->rcu_head, release_callchain_buffers_rcu); +} + +static int alloc_callchain_buffers(void) +{ + int cpu; + int size; + struct callchain_cpus_entries *entries; + + /* + * We can't use the percpu allocation API for data that can be + * accessed from NMI. Use a temporary manual per cpu allocation + * until that gets sorted out. + */ + size = sizeof(*entries) + sizeof(struct perf_callchain_entry *) * + num_possible_cpus(); + + entries = kzalloc(size, GFP_KERNEL); + if (!entries) + return -ENOMEM; + + size = sizeof(struct perf_callchain_entry) * PERF_NR_CONTEXTS; + + for_each_possible_cpu(cpu) { + entries->cpu_entries[cpu] = kmalloc_node(size, GFP_KERNEL, + cpu_to_node(cpu)); + if (!entries->cpu_entries[cpu]) + goto fail; + } + + rcu_assign_pointer(callchain_cpus_entries, entries); + + return 0; + +fail: + for_each_possible_cpu(cpu) + kfree(entries->cpu_entries[cpu]); + kfree(entries); + + return -ENOMEM; +} + +static int get_callchain_buffers(void) +{ + int err = 0; + int count; + + mutex_lock(&callchain_mutex); + + count = atomic_inc_return(&nr_callchain_events); + if (WARN_ON_ONCE(count < 1)) { + err = -EINVAL; + goto exit; + } + + if (count > 1) { + /* If the allocation failed, give up */ + if (!callchain_cpus_entries) + err = -ENOMEM; + goto exit; + } + + err = alloc_callchain_buffers(); + if (err) + release_callchain_buffers(); +exit: + mutex_unlock(&callchain_mutex); + + return err; +} + +static void put_callchain_buffers(void) +{ + if (atomic_dec_and_mutex_lock(&nr_callchain_events, &callchain_mutex)) { + release_callchain_buffers(); + mutex_unlock(&callchain_mutex); + } +} + +static int get_recursion_context(int *recursion) +{ + int rctx; + + if (in_nmi()) + rctx = 3; + else if (in_irq()) + rctx = 2; + else if (in_softirq()) + rctx = 1; + else + rctx = 0; + + if (recursion[rctx]) + return -1; + + recursion[rctx]++; + barrier(); + + return rctx; +} + +static inline void put_recursion_context(int *recursion, int rctx) +{ + barrier(); + recursion[rctx]--; +} + +static struct perf_callchain_entry *get_callchain_entry(int *rctx) +{ + int cpu; + struct callchain_cpus_entries *entries; + + *rctx = get_recursion_context(__get_cpu_var(callchain_recursion)); + if (*rctx == -1) + return NULL; + + entries = rcu_dereference(callchain_cpus_entries); + if (!entries) + return NULL; + + cpu = smp_processor_id(); + + return &entries->cpu_entries[cpu][*rctx]; +} + static void -__perf_event_init_context(struct perf_event_context *ctx, - struct task_struct *task) +put_callchain_entry(int rctx) +{ + put_recursion_context(__get_cpu_var(callchain_recursion), rctx); +} + +static struct perf_callchain_entry *perf_callchain(struct pt_regs *regs) +{ + int rctx; + struct perf_callchain_entry *entry; + + + entry = get_callchain_entry(&rctx); + if (rctx == -1) + return NULL; + + if (!entry) + goto exit_put; + + entry->nr = 0; + + if (!user_mode(regs)) { + perf_callchain_store(entry, PERF_CONTEXT_KERNEL); + perf_callchain_kernel(entry, regs); + if (current->mm) + regs = task_pt_regs(current); + else + regs = NULL; + } + + if (regs) { + perf_callchain_store(entry, PERF_CONTEXT_USER); + perf_callchain_user(entry, regs); + } + +exit_put: + put_callchain_entry(rctx); + + return entry; +} + +/* + * Initialize the perf_event context in a task_struct: + */ +static void __perf_event_init_context(struct perf_event_context *ctx) { raw_spin_lock_init(&ctx->lock); mutex_init(&ctx->mutex); @@ -1794,45 +2062,38 @@ __perf_event_init_context(struct perf_event_context *ctx, INIT_LIST_HEAD(&ctx->flexible_groups); INIT_LIST_HEAD(&ctx->event_list); atomic_set(&ctx->refcount, 1); - ctx->task = task; } -static struct perf_event_context *find_get_context(pid_t pid, int cpu) +static struct perf_event_context * +alloc_perf_context(struct pmu *pmu, struct task_struct *task) { struct perf_event_context *ctx; - struct perf_cpu_context *cpuctx; - struct task_struct *task; - unsigned long flags; - int err; - - if (pid == -1 && cpu != -1) { - /* Must be root to operate on a CPU event: */ - if (perf_paranoid_cpu() && !capable(CAP_SYS_ADMIN)) - return ERR_PTR(-EACCES); - if (cpu < 0 || cpu >= nr_cpumask_bits) - return ERR_PTR(-EINVAL); + ctx = kzalloc(sizeof(struct perf_event_context), GFP_KERNEL); + if (!ctx) + return NULL; - /* - * We could be clever and allow to attach a event to an - * offline CPU and activate it when the CPU comes up, but - * that's for later. - */ - if (!cpu_online(cpu)) - return ERR_PTR(-ENODEV); + __perf_event_init_context(ctx); + if (task) { + ctx->task = task; + get_task_struct(task); + } + ctx->pmu = pmu; - cpuctx = &per_cpu(perf_cpu_context, cpu); - ctx = &cpuctx->ctx; - get_ctx(ctx); + return ctx; +} - return ctx; - } +static struct task_struct * +find_lively_task_by_vpid(pid_t vpid) +{ + struct task_struct *task; + int err; rcu_read_lock(); - if (!pid) + if (!vpid) task = current; else - task = find_task_by_vpid(pid); + task = find_task_by_vpid(vpid); if (task) get_task_struct(task); rcu_read_unlock(); @@ -1852,36 +2113,78 @@ static struct perf_event_context *find_get_context(pid_t pid, int cpu) if (!ptrace_may_access(task, PTRACE_MODE_READ)) goto errout; - retry: - ctx = perf_lock_task_context(task, &flags); + return task; +errout: + put_task_struct(task); + return ERR_PTR(err); + +} + +static struct perf_event_context * +find_get_context(struct pmu *pmu, struct task_struct *task, int cpu) +{ + struct perf_event_context *ctx; + struct perf_cpu_context *cpuctx; + unsigned long flags; + int ctxn, err; + + if (!task && cpu != -1) { + /* Must be root to operate on a CPU event: */ + if (perf_paranoid_cpu() && !capable(CAP_SYS_ADMIN)) + return ERR_PTR(-EACCES); + + if (cpu < 0 || cpu >= nr_cpumask_bits) + return ERR_PTR(-EINVAL); + + /* + * We could be clever and allow to attach a event to an + * offline CPU and activate it when the CPU comes up, but + * that's for later. + */ + if (!cpu_online(cpu)) + return ERR_PTR(-ENODEV); + + cpuctx = per_cpu_ptr(pmu->pmu_cpu_context, cpu); + ctx = &cpuctx->ctx; + get_ctx(ctx); + + return ctx; + } + + err = -EINVAL; + ctxn = pmu->task_ctx_nr; + if (ctxn < 0) + goto errout; + +retry: + ctx = perf_lock_task_context(task, ctxn, &flags); if (ctx) { unclone_ctx(ctx); raw_spin_unlock_irqrestore(&ctx->lock, flags); } if (!ctx) { - ctx = kzalloc(sizeof(struct perf_event_context), GFP_KERNEL); + ctx = alloc_perf_context(pmu, task); err = -ENOMEM; if (!ctx) goto errout; - __perf_event_init_context(ctx, task); + get_ctx(ctx); - if (cmpxchg(&task->perf_event_ctxp, NULL, ctx)) { + + if (cmpxchg(&task->perf_event_ctxp[ctxn], NULL, ctx)) { /* * We raced with some other task; use * the context they set. */ + put_task_struct(task); kfree(ctx); goto retry; } - get_task_struct(task); } - put_task_struct(task); return ctx; - errout: - put_task_struct(task); +errout: return ERR_PTR(err); } @@ -1898,21 +2201,23 @@ static void free_event_rcu(struct rcu_head *head) kfree(event); } -static void perf_pending_sync(struct perf_event *event); static void perf_buffer_put(struct perf_buffer *buffer); static void free_event(struct perf_event *event) { - perf_pending_sync(event); + irq_work_sync(&event->pending); if (!event->parent) { - atomic_dec(&nr_events); + if (event->attach_state & PERF_ATTACH_TASK) + jump_label_dec(&perf_task_events); if (event->attr.mmap || event->attr.mmap_data) atomic_dec(&nr_mmap_events); if (event->attr.comm) atomic_dec(&nr_comm_events); if (event->attr.task) atomic_dec(&nr_task_events); + if (event->attr.sample_type & PERF_SAMPLE_CALLCHAIN) + put_callchain_buffers(); } if (event->buffer) { @@ -1923,7 +2228,9 @@ static void free_event(struct perf_event *event) if (event->destroy) event->destroy(event); - put_ctx(event->ctx); + if (event->ctx) + put_ctx(event->ctx); + call_rcu(&event->rcu_head, free_event_rcu); } @@ -2342,6 +2649,9 @@ int perf_event_task_disable(void) static int perf_event_index(struct perf_event *event) { + if (event->hw.state & PERF_HES_STOPPED) + return 0; + if (event->state != PERF_EVENT_STATE_ACTIVE) return 0; @@ -2845,16 +3155,7 @@ void perf_event_wakeup(struct perf_event *event) } } -/* - * Pending wakeups - * - * Handle the case where we need to wakeup up from NMI (or rq->lock) context. - * - * The NMI bit means we cannot possibly take locks. Therefore, maintain a - * single linked list and use cmpxchg() to add entries lockless. - */ - -static void perf_pending_event(struct perf_pending_entry *entry) +static void perf_pending_event(struct irq_work *entry) { struct perf_event *event = container_of(entry, struct perf_event, pending); @@ -2870,99 +3171,6 @@ static void perf_pending_event(struct perf_pending_entry *entry) } } -#define PENDING_TAIL ((struct perf_pending_entry *)-1UL) - -static DEFINE_PER_CPU(struct perf_pending_entry *, perf_pending_head) = { - PENDING_TAIL, -}; - -static void perf_pending_queue(struct perf_pending_entry *entry, - void (*func)(struct perf_pending_entry *)) -{ - struct perf_pending_entry **head; - - if (cmpxchg(&entry->next, NULL, PENDING_TAIL) != NULL) - return; - - entry->func = func; - - head = &get_cpu_var(perf_pending_head); - - do { - entry->next = *head; - } while (cmpxchg(head, entry->next, entry) != entry->next); - - set_perf_event_pending(); - - put_cpu_var(perf_pending_head); -} - -static int __perf_pending_run(void) -{ - struct perf_pending_entry *list; - int nr = 0; - - list = xchg(&__get_cpu_var(perf_pending_head), PENDING_TAIL); - while (list != PENDING_TAIL) { - void (*func)(struct perf_pending_entry *); - struct perf_pending_entry *entry = list; - - list = list->next; - - func = entry->func; - entry->next = NULL; - /* - * Ensure we observe the unqueue before we issue the wakeup, - * so that we won't be waiting forever. - * -- see perf_not_pending(). - */ - smp_wmb(); - - func(entry); - nr++; - } - - return nr; -} - -static inline int perf_not_pending(struct perf_event *event) -{ - /* - * If we flush on whatever cpu we run, there is a chance we don't - * need to wait. - */ - get_cpu(); - __perf_pending_run(); - put_cpu(); - - /* - * Ensure we see the proper queue state before going to sleep - * so that we do not miss the wakeup. -- see perf_pending_handle() - */ - smp_rmb(); - return event->pending.next == NULL; -} - -static void perf_pending_sync(struct perf_event *event) -{ - wait_event(event->waitq, perf_not_pending(event)); -} - -void perf_event_do_pending(void) -{ - __perf_pending_run(); -} - -/* - * Callchain support -- arch specific - */ - -__weak struct perf_callchain_entry *perf_callchain(struct pt_regs *regs) -{ - return NULL; -} - - /* * We assume there is only KVM supporting the callbacks. * Later on, we might change it to a list if there is @@ -3012,8 +3220,7 @@ static void perf_output_wakeup(struct perf_output_handle *handle) if (handle->nmi) { handle->event->pending_wakeup = 1; - perf_pending_queue(&handle->event->pending, - perf_pending_event); + irq_work_queue(&handle->event->pending); } else perf_event_wakeup(handle->event); } @@ -3069,7 +3276,7 @@ again: if (handle->wakeup != local_read(&buffer->wakeup)) perf_output_wakeup(handle); - out: +out: preempt_enable(); } @@ -3457,14 +3664,20 @@ static void perf_event_output(struct perf_event *event, int nmi, struct perf_output_handle handle; struct perf_event_header header; + /* protect the callchain buffers */ + rcu_read_lock(); + perf_prepare_sample(&header, data, event, regs); if (perf_output_begin(&handle, event, header.size, nmi, 1)) - return; + goto exit; perf_output_sample(&handle, &header, data, event); perf_output_end(&handle); + +exit: + rcu_read_unlock(); } /* @@ -3578,16 +3791,27 @@ static void perf_event_task_ctx(struct perf_event_context *ctx, static void perf_event_task_event(struct perf_task_event *task_event) { struct perf_cpu_context *cpuctx; - struct perf_event_context *ctx = task_event->task_ctx; + struct perf_event_context *ctx; + struct pmu *pmu; + int ctxn; rcu_read_lock(); - cpuctx = &get_cpu_var(perf_cpu_context); - perf_event_task_ctx(&cpuctx->ctx, task_event); - if (!ctx) - ctx = rcu_dereference(current->perf_event_ctxp); - if (ctx) - perf_event_task_ctx(ctx, task_event); - put_cpu_var(perf_cpu_context); + list_for_each_entry_rcu(pmu, &pmus, entry) { + cpuctx = get_cpu_ptr(pmu->pmu_cpu_context); + perf_event_task_ctx(&cpuctx->ctx, task_event); + + ctx = task_event->task_ctx; + if (!ctx) { + ctxn = pmu->task_ctx_nr; + if (ctxn < 0) + goto next; + ctx = rcu_dereference(current->perf_event_ctxp[ctxn]); + } + if (ctx) + perf_event_task_ctx(ctx, task_event); +next: + put_cpu_ptr(pmu->pmu_cpu_context); + } rcu_read_unlock(); } @@ -3692,8 +3916,10 @@ static void perf_event_comm_event(struct perf_comm_event *comm_event) { struct perf_cpu_context *cpuctx; struct perf_event_context *ctx; - unsigned int size; char comm[TASK_COMM_LEN]; + unsigned int size; + struct pmu *pmu; + int ctxn; memset(comm, 0, sizeof(comm)); strlcpy(comm, comm_event->task->comm, sizeof(comm)); @@ -3705,21 +3931,36 @@ static void perf_event_comm_event(struct perf_comm_event *comm_event) comm_event->event_id.header.size = sizeof(comm_event->event_id) + size; rcu_read_lock(); - cpuctx = &get_cpu_var(perf_cpu_context); - perf_event_comm_ctx(&cpuctx->ctx, comm_event); - ctx = rcu_dereference(current->perf_event_ctxp); - if (ctx) - perf_event_comm_ctx(ctx, comm_event); - put_cpu_var(perf_cpu_context); + list_for_each_entry_rcu(pmu, &pmus, entry) { + cpuctx = get_cpu_ptr(pmu->pmu_cpu_context); + perf_event_comm_ctx(&cpuctx->ctx, comm_event); + + ctxn = pmu->task_ctx_nr; + if (ctxn < 0) + goto next; + + ctx = rcu_dereference(current->perf_event_ctxp[ctxn]); + if (ctx) + perf_event_comm_ctx(ctx, comm_event); +next: + put_cpu_ptr(pmu->pmu_cpu_context); + } rcu_read_unlock(); } void perf_event_comm(struct task_struct *task) { struct perf_comm_event comm_event; + struct perf_event_context *ctx; + int ctxn; + + for_each_task_context_nr(ctxn) { + ctx = task->perf_event_ctxp[ctxn]; + if (!ctx) + continue; - if (task->perf_event_ctxp) - perf_event_enable_on_exec(task); + perf_event_enable_on_exec(ctx); + } if (!atomic_read(&nr_comm_events)) return; @@ -3821,6 +4062,8 @@ static void perf_event_mmap_event(struct perf_mmap_event *mmap_event) char tmp[16]; char *buf = NULL; const char *name; + struct pmu *pmu; + int ctxn; memset(tmp, 0, sizeof(tmp)); @@ -3873,12 +4116,23 @@ got_name: mmap_event->event_id.header.size = sizeof(mmap_event->event_id) + size; rcu_read_lock(); - cpuctx = &get_cpu_var(perf_cpu_context); - perf_event_mmap_ctx(&cpuctx->ctx, mmap_event, vma->vm_flags & VM_EXEC); - ctx = rcu_dereference(current->perf_event_ctxp); - if (ctx) - perf_event_mmap_ctx(ctx, mmap_event, vma->vm_flags & VM_EXEC); - put_cpu_var(perf_cpu_context); + list_for_each_entry_rcu(pmu, &pmus, entry) { + cpuctx = get_cpu_ptr(pmu->pmu_cpu_context); + perf_event_mmap_ctx(&cpuctx->ctx, mmap_event, + vma->vm_flags & VM_EXEC); + + ctxn = pmu->task_ctx_nr; + if (ctxn < 0) + goto next; + + ctx = rcu_dereference(current->perf_event_ctxp[ctxn]); + if (ctx) { + perf_event_mmap_ctx(ctx, mmap_event, + vma->vm_flags & VM_EXEC); + } +next: + put_cpu_ptr(pmu->pmu_cpu_context); + } rcu_read_unlock(); kfree(buf); @@ -3960,8 +4214,6 @@ static int __perf_event_overflow(struct perf_event *event, int nmi, struct hw_perf_event *hwc = &event->hw; int ret = 0; - throttle = (throttle && event->pmu->unthrottle != NULL); - if (!throttle) { hwc->interrupts++; } else { @@ -4004,8 +4256,7 @@ static int __perf_event_overflow(struct perf_event *event, int nmi, event->pending_kill = POLL_HUP; if (nmi) { event->pending_disable = 1; - perf_pending_queue(&event->pending, - perf_pending_event); + irq_work_queue(&event->pending); } else perf_event_disable(event); } @@ -4029,6 +4280,17 @@ int perf_event_overflow(struct perf_event *event, int nmi, * Generic software event infrastructure */ +struct swevent_htable { + struct swevent_hlist *swevent_hlist; + struct mutex hlist_mutex; + int hlist_refcount; + + /* Recursion avoidance in each contexts */ + int recursion[PERF_NR_CONTEXTS]; +}; + +static DEFINE_PER_CPU(struct swevent_htable, swevent_htable); + /* * We directly increment event->count and keep a second value in * event->hw.period_left to count intervals. This period event @@ -4086,7 +4348,7 @@ static void perf_swevent_overflow(struct perf_event *event, u64 overflow, } } -static void perf_swevent_add(struct perf_event *event, u64 nr, +static void perf_swevent_event(struct perf_event *event, u64 nr, int nmi, struct perf_sample_data *data, struct pt_regs *regs) { @@ -4112,6 +4374,9 @@ static void perf_swevent_add(struct perf_event *event, u64 nr, static int perf_exclude_event(struct perf_event *event, struct pt_regs *regs) { + if (event->hw.state & PERF_HES_STOPPED) + return 0; + if (regs) { if (event->attr.exclude_user && user_mode(regs)) return 1; @@ -4158,11 +4423,11 @@ __find_swevent_head(struct swevent_hlist *hlist, u64 type, u32 event_id) /* For the read side: events when they trigger */ static inline struct hlist_head * -find_swevent_head_rcu(struct perf_cpu_context *ctx, u64 type, u32 event_id) +find_swevent_head_rcu(struct swevent_htable *swhash, u64 type, u32 event_id) { struct swevent_hlist *hlist; - hlist = rcu_dereference(ctx->swevent_hlist); + hlist = rcu_dereference(swhash->swevent_hlist); if (!hlist) return NULL; @@ -4171,7 +4436,7 @@ find_swevent_head_rcu(struct perf_cpu_context *ctx, u64 type, u32 event_id) /* For the event head insertion and removal in the hlist */ static inline struct hlist_head * -find_swevent_head(struct perf_cpu_context *ctx, struct perf_event *event) +find_swevent_head(struct swevent_htable *swhash, struct perf_event *event) { struct swevent_hlist *hlist; u32 event_id = event->attr.config; @@ -4182,7 +4447,7 @@ find_swevent_head(struct perf_cpu_context *ctx, struct perf_event *event) * and release. Which makes the protected version suitable here. * The context lock guarantees that. */ - hlist = rcu_dereference_protected(ctx->swevent_hlist, + hlist = rcu_dereference_protected(swhash->swevent_hlist, lockdep_is_held(&event->ctx->lock)); if (!hlist) return NULL; @@ -4195,23 +4460,19 @@ static void do_perf_sw_event(enum perf_type_id type, u32 event_id, struct perf_sample_data *data, struct pt_regs *regs) { - struct perf_cpu_context *cpuctx; + struct swevent_htable *swhash = &__get_cpu_var(swevent_htable); struct perf_event *event; struct hlist_node *node; struct hlist_head *head; - cpuctx = &__get_cpu_var(perf_cpu_context); - rcu_read_lock(); - - head = find_swevent_head_rcu(cpuctx, type, event_id); - + head = find_swevent_head_rcu(swhash, type, event_id); if (!head) goto end; hlist_for_each_entry_rcu(event, node, head, hlist_entry) { if (perf_swevent_match(event, type, event_id, data, regs)) - perf_swevent_add(event, nr, nmi, data, regs); + perf_swevent_event(event, nr, nmi, data, regs); } end: rcu_read_unlock(); @@ -4219,33 +4480,17 @@ end: int perf_swevent_get_recursion_context(void) { - struct perf_cpu_context *cpuctx = &__get_cpu_var(perf_cpu_context); - int rctx; - - if (in_nmi()) - rctx = 3; - else if (in_irq()) - rctx = 2; - else if (in_softirq()) - rctx = 1; - else - rctx = 0; - - if (cpuctx->recursion[rctx]) - return -1; + struct swevent_htable *swhash = &__get_cpu_var(swevent_htable); - cpuctx->recursion[rctx]++; - barrier(); - - return rctx; + return get_recursion_context(swhash->recursion); } EXPORT_SYMBOL_GPL(perf_swevent_get_recursion_context); void inline perf_swevent_put_recursion_context(int rctx) { - struct perf_cpu_context *cpuctx = &__get_cpu_var(perf_cpu_context); - barrier(); - cpuctx->recursion[rctx]--; + struct swevent_htable *swhash = &__get_cpu_var(swevent_htable); + + put_recursion_context(swhash->recursion, rctx); } void __perf_sw_event(u32 event_id, u64 nr, int nmi, @@ -4271,20 +4516,20 @@ static void perf_swevent_read(struct perf_event *event) { } -static int perf_swevent_enable(struct perf_event *event) +static int perf_swevent_add(struct perf_event *event, int flags) { + struct swevent_htable *swhash = &__get_cpu_var(swevent_htable); struct hw_perf_event *hwc = &event->hw; - struct perf_cpu_context *cpuctx; struct hlist_head *head; - cpuctx = &__get_cpu_var(perf_cpu_context); - if (hwc->sample_period) { hwc->last_period = hwc->sample_period; perf_swevent_set_period(event); } - head = find_swevent_head(cpuctx, event); + hwc->state = !(flags & PERF_EF_START); + + head = find_swevent_head(swhash, event); if (WARN_ON_ONCE(!head)) return -EINVAL; @@ -4293,202 +4538,27 @@ static int perf_swevent_enable(struct perf_event *event) return 0; } -static void perf_swevent_disable(struct perf_event *event) +static void perf_swevent_del(struct perf_event *event, int flags) { hlist_del_rcu(&event->hlist_entry); } -static void perf_swevent_void(struct perf_event *event) -{ -} - -static int perf_swevent_int(struct perf_event *event) -{ - return 0; -} - -static const struct pmu perf_ops_generic = { - .enable = perf_swevent_enable, - .disable = perf_swevent_disable, - .start = perf_swevent_int, - .stop = perf_swevent_void, - .read = perf_swevent_read, - .unthrottle = perf_swevent_void, /* hwc->interrupts already reset */ -}; - -/* - * hrtimer based swevent callback - */ - -static enum hrtimer_restart perf_swevent_hrtimer(struct hrtimer *hrtimer) +static void perf_swevent_start(struct perf_event *event, int flags) { - enum hrtimer_restart ret = HRTIMER_RESTART; - struct perf_sample_data data; - struct pt_regs *regs; - struct perf_event *event; - u64 period; - - event = container_of(hrtimer, struct perf_event, hw.hrtimer); - event->pmu->read(event); - - perf_sample_data_init(&data, 0); - data.period = event->hw.last_period; - regs = get_irq_regs(); - - if (regs && !perf_exclude_event(event, regs)) { - if (!(event->attr.exclude_idle && current->pid == 0)) - if (perf_event_overflow(event, 0, &data, regs)) - ret = HRTIMER_NORESTART; - } - - period = max_t(u64, 10000, event->hw.sample_period); - hrtimer_forward_now(hrtimer, ns_to_ktime(period)); - - return ret; + event->hw.state = 0; } -static void perf_swevent_start_hrtimer(struct perf_event *event) +static void perf_swevent_stop(struct perf_event *event, int flags) { - struct hw_perf_event *hwc = &event->hw; - - hrtimer_init(&hwc->hrtimer, CLOCK_MONOTONIC, HRTIMER_MODE_REL); - hwc->hrtimer.function = perf_swevent_hrtimer; - if (hwc->sample_period) { - u64 period; - - if (hwc->remaining) { - if (hwc->remaining < 0) - period = 10000; - else - period = hwc->remaining; - hwc->remaining = 0; - } else { - period = max_t(u64, 10000, hwc->sample_period); - } - __hrtimer_start_range_ns(&hwc->hrtimer, - ns_to_ktime(period), 0, - HRTIMER_MODE_REL, 0); - } -} - -static void perf_swevent_cancel_hrtimer(struct perf_event *event) -{ - struct hw_perf_event *hwc = &event->hw; - - if (hwc->sample_period) { - ktime_t remaining = hrtimer_get_remaining(&hwc->hrtimer); - hwc->remaining = ktime_to_ns(remaining); - - hrtimer_cancel(&hwc->hrtimer); - } -} - -/* - * Software event: cpu wall time clock - */ - -static void cpu_clock_perf_event_update(struct perf_event *event) -{ - int cpu = raw_smp_processor_id(); - s64 prev; - u64 now; - - now = cpu_clock(cpu); - prev = local64_xchg(&event->hw.prev_count, now); - local64_add(now - prev, &event->count); -} - -static int cpu_clock_perf_event_enable(struct perf_event *event) -{ - struct hw_perf_event *hwc = &event->hw; - int cpu = raw_smp_processor_id(); - - local64_set(&hwc->prev_count, cpu_clock(cpu)); - perf_swevent_start_hrtimer(event); - - return 0; -} - -static void cpu_clock_perf_event_disable(struct perf_event *event) -{ - perf_swevent_cancel_hrtimer(event); - cpu_clock_perf_event_update(event); -} - -static void cpu_clock_perf_event_read(struct perf_event *event) -{ - cpu_clock_perf_event_update(event); -} - -static const struct pmu perf_ops_cpu_clock = { - .enable = cpu_clock_perf_event_enable, - .disable = cpu_clock_perf_event_disable, - .read = cpu_clock_perf_event_read, -}; - -/* - * Software event: task time clock - */ - -static void task_clock_perf_event_update(struct perf_event *event, u64 now) -{ - u64 prev; - s64 delta; - - prev = local64_xchg(&event->hw.prev_count, now); - delta = now - prev; - local64_add(delta, &event->count); -} - -static int task_clock_perf_event_enable(struct perf_event *event) -{ - struct hw_perf_event *hwc = &event->hw; - u64 now; - - now = event->ctx->time; - - local64_set(&hwc->prev_count, now); - - perf_swevent_start_hrtimer(event); - - return 0; -} - -static void task_clock_perf_event_disable(struct perf_event *event) -{ - perf_swevent_cancel_hrtimer(event); - task_clock_perf_event_update(event, event->ctx->time); - -} - -static void task_clock_perf_event_read(struct perf_event *event) -{ - u64 time; - - if (!in_nmi()) { - update_context_time(event->ctx); - time = event->ctx->time; - } else { - u64 now = perf_clock(); - u64 delta = now - event->ctx->timestamp; - time = event->ctx->time + delta; - } - - task_clock_perf_event_update(event, time); + event->hw.state = PERF_HES_STOPPED; } -static const struct pmu perf_ops_task_clock = { - .enable = task_clock_perf_event_enable, - .disable = task_clock_perf_event_disable, - .read = task_clock_perf_event_read, -}; - /* Deref the hlist from the update side */ static inline struct swevent_hlist * -swevent_hlist_deref(struct perf_cpu_context *cpuctx) +swevent_hlist_deref(struct swevent_htable *swhash) { - return rcu_dereference_protected(cpuctx->swevent_hlist, - lockdep_is_held(&cpuctx->hlist_mutex)); + return rcu_dereference_protected(swhash->swevent_hlist, + lockdep_is_held(&swhash->hlist_mutex)); } static void swevent_hlist_release_rcu(struct rcu_head *rcu_head) @@ -4499,27 +4569,27 @@ static void swevent_hlist_release_rcu(struct rcu_head *rcu_head) kfree(hlist); } -static void swevent_hlist_release(struct perf_cpu_context *cpuctx) +static void swevent_hlist_release(struct swevent_htable *swhash) { - struct swevent_hlist *hlist = swevent_hlist_deref(cpuctx); + struct swevent_hlist *hlist = swevent_hlist_deref(swhash); if (!hlist) return; - rcu_assign_pointer(cpuctx->swevent_hlist, NULL); + rcu_assign_pointer(swhash->swevent_hlist, NULL); call_rcu(&hlist->rcu_head, swevent_hlist_release_rcu); } static void swevent_hlist_put_cpu(struct perf_event *event, int cpu) { - struct perf_cpu_context *cpuctx = &per_cpu(perf_cpu_context, cpu); + struct swevent_htable *swhash = &per_cpu(swevent_htable, cpu); - mutex_lock(&cpuctx->hlist_mutex); + mutex_lock(&swhash->hlist_mutex); - if (!--cpuctx->hlist_refcount) - swevent_hlist_release(cpuctx); + if (!--swhash->hlist_refcount) + swevent_hlist_release(swhash); - mutex_unlock(&cpuctx->hlist_mutex); + mutex_unlock(&swhash->hlist_mutex); } static void swevent_hlist_put(struct perf_event *event) @@ -4537,12 +4607,12 @@ static void swevent_hlist_put(struct perf_event *event) static int swevent_hlist_get_cpu(struct perf_event *event, int cpu) { - struct perf_cpu_context *cpuctx = &per_cpu(perf_cpu_context, cpu); + struct swevent_htable *swhash = &per_cpu(swevent_htable, cpu); int err = 0; - mutex_lock(&cpuctx->hlist_mutex); + mutex_lock(&swhash->hlist_mutex); - if (!swevent_hlist_deref(cpuctx) && cpu_online(cpu)) { + if (!swevent_hlist_deref(swhash) && cpu_online(cpu)) { struct swevent_hlist *hlist; hlist = kzalloc(sizeof(*hlist), GFP_KERNEL); @@ -4550,11 +4620,11 @@ static int swevent_hlist_get_cpu(struct perf_event *event, int cpu) err = -ENOMEM; goto exit; } - rcu_assign_pointer(cpuctx->swevent_hlist, hlist); + rcu_assign_pointer(swhash->swevent_hlist, hlist); } - cpuctx->hlist_refcount++; - exit: - mutex_unlock(&cpuctx->hlist_mutex); + swhash->hlist_refcount++; +exit: + mutex_unlock(&swhash->hlist_mutex); return err; } @@ -4578,7 +4648,7 @@ static int swevent_hlist_get(struct perf_event *event) put_online_cpus(); return 0; - fail: +fail: for_each_possible_cpu(cpu) { if (cpu == failed_cpu) break; @@ -4589,17 +4659,64 @@ static int swevent_hlist_get(struct perf_event *event) return err; } -#ifdef CONFIG_EVENT_TRACING +atomic_t perf_swevent_enabled[PERF_COUNT_SW_MAX]; + +static void sw_perf_event_destroy(struct perf_event *event) +{ + u64 event_id = event->attr.config; + + WARN_ON(event->parent); + + jump_label_dec(&perf_swevent_enabled[event_id]); + swevent_hlist_put(event); +} + +static int perf_swevent_init(struct perf_event *event) +{ + int event_id = event->attr.config; + + if (event->attr.type != PERF_TYPE_SOFTWARE) + return -ENOENT; + + switch (event_id) { + case PERF_COUNT_SW_CPU_CLOCK: + case PERF_COUNT_SW_TASK_CLOCK: + return -ENOENT; -static const struct pmu perf_ops_tracepoint = { - .enable = perf_trace_enable, - .disable = perf_trace_disable, - .start = perf_swevent_int, - .stop = perf_swevent_void, + default: + break; + } + + if (event_id > PERF_COUNT_SW_MAX) + return -ENOENT; + + if (!event->parent) { + int err; + + err = swevent_hlist_get(event); + if (err) + return err; + + jump_label_inc(&perf_swevent_enabled[event_id]); + event->destroy = sw_perf_event_destroy; + } + + return 0; +} + +static struct pmu perf_swevent = { + .task_ctx_nr = perf_sw_context, + + .event_init = perf_swevent_init, + .add = perf_swevent_add, + .del = perf_swevent_del, + .start = perf_swevent_start, + .stop = perf_swevent_stop, .read = perf_swevent_read, - .unthrottle = perf_swevent_void, }; +#ifdef CONFIG_EVENT_TRACING + static int perf_tp_filter_match(struct perf_event *event, struct perf_sample_data *data) { @@ -4643,7 +4760,7 @@ void perf_tp_event(u64 addr, u64 count, void *record, int entry_size, hlist_for_each_entry_rcu(event, node, head, hlist_entry) { if (perf_tp_event_match(event, &data, regs)) - perf_swevent_add(event, count, 1, &data, regs); + perf_swevent_event(event, count, 1, &data, regs); } perf_swevent_put_recursion_context(rctx); @@ -4655,10 +4772,13 @@ static void tp_perf_event_destroy(struct perf_event *event) perf_trace_destroy(event); } -static const struct pmu *tp_perf_event_init(struct perf_event *event) +static int perf_tp_event_init(struct perf_event *event) { int err; + if (event->attr.type != PERF_TYPE_TRACEPOINT) + return -ENOENT; + /* * Raw tracepoint data is a severe data leak, only allow root to * have these. @@ -4666,15 +4786,31 @@ static const struct pmu *tp_perf_event_init(struct perf_event *event) if ((event->attr.sample_type & PERF_SAMPLE_RAW) && perf_paranoid_tracepoint_raw() && !capable(CAP_SYS_ADMIN)) - return ERR_PTR(-EPERM); + return -EPERM; err = perf_trace_init(event); if (err) - return NULL; + return err; event->destroy = tp_perf_event_destroy; - return &perf_ops_tracepoint; + return 0; +} + +static struct pmu perf_tracepoint = { + .task_ctx_nr = perf_sw_context, + + .event_init = perf_tp_event_init, + .add = perf_trace_add, + .del = perf_trace_del, + .start = perf_swevent_start, + .stop = perf_swevent_stop, + .read = perf_swevent_read, +}; + +static inline void perf_tp_register(void) +{ + perf_pmu_register(&perf_tracepoint); } static int perf_event_set_filter(struct perf_event *event, void __user *arg) @@ -4702,9 +4838,8 @@ static void perf_event_free_filter(struct perf_event *event) #else -static const struct pmu *tp_perf_event_init(struct perf_event *event) +static inline void perf_tp_register(void) { - return NULL; } static int perf_event_set_filter(struct perf_event *event, void __user *arg) @@ -4719,105 +4854,389 @@ static void perf_event_free_filter(struct perf_event *event) #endif /* CONFIG_EVENT_TRACING */ #ifdef CONFIG_HAVE_HW_BREAKPOINT -static void bp_perf_event_destroy(struct perf_event *event) +void perf_bp_event(struct perf_event *bp, void *data) { - release_bp_slot(event); + struct perf_sample_data sample; + struct pt_regs *regs = data; + + perf_sample_data_init(&sample, bp->attr.bp_addr); + + if (!bp->hw.state && !perf_exclude_event(bp, regs)) + perf_swevent_event(bp, 1, 1, &sample, regs); } +#endif -static const struct pmu *bp_perf_event_init(struct perf_event *bp) +/* + * hrtimer based swevent callback + */ + +static enum hrtimer_restart perf_swevent_hrtimer(struct hrtimer *hrtimer) { - int err; + enum hrtimer_restart ret = HRTIMER_RESTART; + struct perf_sample_data data; + struct pt_regs *regs; + struct perf_event *event; + u64 period; - err = register_perf_hw_breakpoint(bp); - if (err) - return ERR_PTR(err); + event = container_of(hrtimer, struct perf_event, hw.hrtimer); + event->pmu->read(event); + + perf_sample_data_init(&data, 0); + data.period = event->hw.last_period; + regs = get_irq_regs(); + + if (regs && !perf_exclude_event(event, regs)) { + if (!(event->attr.exclude_idle && current->pid == 0)) + if (perf_event_overflow(event, 0, &data, regs)) + ret = HRTIMER_NORESTART; + } + + period = max_t(u64, 10000, event->hw.sample_period); + hrtimer_forward_now(hrtimer, ns_to_ktime(period)); - bp->destroy = bp_perf_event_destroy; + return ret; +} - return &perf_ops_bp; +static void perf_swevent_start_hrtimer(struct perf_event *event) +{ + struct hw_perf_event *hwc = &event->hw; + + hrtimer_init(&hwc->hrtimer, CLOCK_MONOTONIC, HRTIMER_MODE_REL); + hwc->hrtimer.function = perf_swevent_hrtimer; + if (hwc->sample_period) { + s64 period = local64_read(&hwc->period_left); + + if (period) { + if (period < 0) + period = 10000; + + local64_set(&hwc->period_left, 0); + } else { + period = max_t(u64, 10000, hwc->sample_period); + } + __hrtimer_start_range_ns(&hwc->hrtimer, + ns_to_ktime(period), 0, + HRTIMER_MODE_REL_PINNED, 0); + } } -void perf_bp_event(struct perf_event *bp, void *data) +static void perf_swevent_cancel_hrtimer(struct perf_event *event) { - struct perf_sample_data sample; - struct pt_regs *regs = data; + struct hw_perf_event *hwc = &event->hw; - perf_sample_data_init(&sample, bp->attr.bp_addr); + if (hwc->sample_period) { + ktime_t remaining = hrtimer_get_remaining(&hwc->hrtimer); + local64_set(&hwc->period_left, ktime_to_ns(remaining)); - if (!perf_exclude_event(bp, regs)) - perf_swevent_add(bp, 1, 1, &sample, regs); + hrtimer_cancel(&hwc->hrtimer); + } } -#else -static const struct pmu *bp_perf_event_init(struct perf_event *bp) + +/* + * Software event: cpu wall time clock + */ + +static void cpu_clock_event_update(struct perf_event *event) { - return NULL; + s64 prev; + u64 now; + + now = local_clock(); + prev = local64_xchg(&event->hw.prev_count, now); + local64_add(now - prev, &event->count); } -void perf_bp_event(struct perf_event *bp, void *regs) +static void cpu_clock_event_start(struct perf_event *event, int flags) { + local64_set(&event->hw.prev_count, local_clock()); + perf_swevent_start_hrtimer(event); } -#endif -atomic_t perf_swevent_enabled[PERF_COUNT_SW_MAX]; +static void cpu_clock_event_stop(struct perf_event *event, int flags) +{ + perf_swevent_cancel_hrtimer(event); + cpu_clock_event_update(event); +} -static void sw_perf_event_destroy(struct perf_event *event) +static int cpu_clock_event_add(struct perf_event *event, int flags) { - u64 event_id = event->attr.config; + if (flags & PERF_EF_START) + cpu_clock_event_start(event, flags); - WARN_ON(event->parent); + return 0; +} - atomic_dec(&perf_swevent_enabled[event_id]); - swevent_hlist_put(event); +static void cpu_clock_event_del(struct perf_event *event, int flags) +{ + cpu_clock_event_stop(event, flags); } -static const struct pmu *sw_perf_event_init(struct perf_event *event) +static void cpu_clock_event_read(struct perf_event *event) { - const struct pmu *pmu = NULL; - u64 event_id = event->attr.config; + cpu_clock_event_update(event); +} + +static int cpu_clock_event_init(struct perf_event *event) +{ + if (event->attr.type != PERF_TYPE_SOFTWARE) + return -ENOENT; + + if (event->attr.config != PERF_COUNT_SW_CPU_CLOCK) + return -ENOENT; + + return 0; +} +static struct pmu perf_cpu_clock = { + .task_ctx_nr = perf_sw_context, + + .event_init = cpu_clock_event_init, + .add = cpu_clock_event_add, + .del = cpu_clock_event_del, + .start = cpu_clock_event_start, + .stop = cpu_clock_event_stop, + .read = cpu_clock_event_read, +}; + +/* + * Software event: task time clock + */ + +static void task_clock_event_update(struct perf_event *event, u64 now) +{ + u64 prev; + s64 delta; + + prev = local64_xchg(&event->hw.prev_count, now); + delta = now - prev; + local64_add(delta, &event->count); +} + +static void task_clock_event_start(struct perf_event *event, int flags) +{ + local64_set(&event->hw.prev_count, event->ctx->time); + perf_swevent_start_hrtimer(event); +} + +static void task_clock_event_stop(struct perf_event *event, int flags) +{ + perf_swevent_cancel_hrtimer(event); + task_clock_event_update(event, event->ctx->time); +} + +static int task_clock_event_add(struct perf_event *event, int flags) +{ + if (flags & PERF_EF_START) + task_clock_event_start(event, flags); + + return 0; +} + +static void task_clock_event_del(struct perf_event *event, int flags) +{ + task_clock_event_stop(event, PERF_EF_UPDATE); +} + +static void task_clock_event_read(struct perf_event *event) +{ + u64 time; + + if (!in_nmi()) { + update_context_time(event->ctx); + time = event->ctx->time; + } else { + u64 now = perf_clock(); + u64 delta = now - event->ctx->timestamp; + time = event->ctx->time + delta; + } + + task_clock_event_update(event, time); +} + +static int task_clock_event_init(struct perf_event *event) +{ + if (event->attr.type != PERF_TYPE_SOFTWARE) + return -ENOENT; + + if (event->attr.config != PERF_COUNT_SW_TASK_CLOCK) + return -ENOENT; + + return 0; +} + +static struct pmu perf_task_clock = { + .task_ctx_nr = perf_sw_context, + + .event_init = task_clock_event_init, + .add = task_clock_event_add, + .del = task_clock_event_del, + .start = task_clock_event_start, + .stop = task_clock_event_stop, + .read = task_clock_event_read, +}; + +static void perf_pmu_nop_void(struct pmu *pmu) +{ +} + +static int perf_pmu_nop_int(struct pmu *pmu) +{ + return 0; +} + +static void perf_pmu_start_txn(struct pmu *pmu) +{ + perf_pmu_disable(pmu); +} + +static int perf_pmu_commit_txn(struct pmu *pmu) +{ + perf_pmu_enable(pmu); + return 0; +} + +static void perf_pmu_cancel_txn(struct pmu *pmu) +{ + perf_pmu_enable(pmu); +} + +/* + * Ensures all contexts with the same task_ctx_nr have the same + * pmu_cpu_context too. + */ +static void *find_pmu_context(int ctxn) +{ + struct pmu *pmu; + + if (ctxn < 0) + return NULL; + + list_for_each_entry(pmu, &pmus, entry) { + if (pmu->task_ctx_nr == ctxn) + return pmu->pmu_cpu_context; + } + + return NULL; +} + +static void free_pmu_context(void * __percpu cpu_context) +{ + struct pmu *pmu; + + mutex_lock(&pmus_lock); /* - * Software events (currently) can't in general distinguish - * between user, kernel and hypervisor events. - * However, context switches and cpu migrations are considered - * to be kernel events, and page faults are never hypervisor - * events. + * Like a real lame refcount. */ - switch (event_id) { - case PERF_COUNT_SW_CPU_CLOCK: - pmu = &perf_ops_cpu_clock; + list_for_each_entry(pmu, &pmus, entry) { + if (pmu->pmu_cpu_context == cpu_context) + goto out; + } - break; - case PERF_COUNT_SW_TASK_CLOCK: - /* - * If the user instantiates this as a per-cpu event, - * use the cpu_clock event instead. - */ - if (event->ctx->task) - pmu = &perf_ops_task_clock; - else - pmu = &perf_ops_cpu_clock; + free_percpu(cpu_context); +out: + mutex_unlock(&pmus_lock); +} - break; - case PERF_COUNT_SW_PAGE_FAULTS: - case PERF_COUNT_SW_PAGE_FAULTS_MIN: - case PERF_COUNT_SW_PAGE_FAULTS_MAJ: - case PERF_COUNT_SW_CONTEXT_SWITCHES: - case PERF_COUNT_SW_CPU_MIGRATIONS: - case PERF_COUNT_SW_ALIGNMENT_FAULTS: - case PERF_COUNT_SW_EMULATION_FAULTS: - if (!event->parent) { - int err; - - err = swevent_hlist_get(event); - if (err) - return ERR_PTR(err); +int perf_pmu_register(struct pmu *pmu) +{ + int cpu, ret; + + mutex_lock(&pmus_lock); + ret = -ENOMEM; + pmu->pmu_disable_count = alloc_percpu(int); + if (!pmu->pmu_disable_count) + goto unlock; - atomic_inc(&perf_swevent_enabled[event_id]); - event->destroy = sw_perf_event_destroy; + pmu->pmu_cpu_context = find_pmu_context(pmu->task_ctx_nr); + if (pmu->pmu_cpu_context) + goto got_cpu_context; + + pmu->pmu_cpu_context = alloc_percpu(struct perf_cpu_context); + if (!pmu->pmu_cpu_context) + goto free_pdc; + + for_each_possible_cpu(cpu) { + struct perf_cpu_context *cpuctx; + + cpuctx = per_cpu_ptr(pmu->pmu_cpu_context, cpu); + __perf_event_init_context(&cpuctx->ctx); + cpuctx->ctx.type = cpu_context; + cpuctx->ctx.pmu = pmu; + cpuctx->jiffies_interval = 1; + INIT_LIST_HEAD(&cpuctx->rotation_list); + } + +got_cpu_context: + if (!pmu->start_txn) { + if (pmu->pmu_enable) { + /* + * If we have pmu_enable/pmu_disable calls, install + * transaction stubs that use that to try and batch + * hardware accesses. + */ + pmu->start_txn = perf_pmu_start_txn; + pmu->commit_txn = perf_pmu_commit_txn; + pmu->cancel_txn = perf_pmu_cancel_txn; + } else { + pmu->start_txn = perf_pmu_nop_void; + pmu->commit_txn = perf_pmu_nop_int; + pmu->cancel_txn = perf_pmu_nop_void; + } + } + + if (!pmu->pmu_enable) { + pmu->pmu_enable = perf_pmu_nop_void; + pmu->pmu_disable = perf_pmu_nop_void; + } + + list_add_rcu(&pmu->entry, &pmus); + ret = 0; +unlock: + mutex_unlock(&pmus_lock); + + return ret; + +free_pdc: + free_percpu(pmu->pmu_disable_count); + goto unlock; +} + +void perf_pmu_unregister(struct pmu *pmu) +{ + mutex_lock(&pmus_lock); + list_del_rcu(&pmu->entry); + mutex_unlock(&pmus_lock); + + /* + * We dereference the pmu list under both SRCU and regular RCU, so + * synchronize against both of those. + */ + synchronize_srcu(&pmus_srcu); + synchronize_rcu(); + + free_percpu(pmu->pmu_disable_count); + free_pmu_context(pmu->pmu_cpu_context); +} + +struct pmu *perf_init_event(struct perf_event *event) +{ + struct pmu *pmu = NULL; + int idx; + + idx = srcu_read_lock(&pmus_srcu); + list_for_each_entry_rcu(pmu, &pmus, entry) { + int ret = pmu->event_init(event); + if (!ret) + goto unlock; + + if (ret != -ENOENT) { + pmu = ERR_PTR(ret); + goto unlock; } - pmu = &perf_ops_generic; - break; } + pmu = ERR_PTR(-ENOENT); +unlock: + srcu_read_unlock(&pmus_srcu, idx); return pmu; } @@ -4826,20 +5245,18 @@ static const struct pmu *sw_perf_event_init(struct perf_event *event) * Allocate and initialize a event structure */ static struct perf_event * -perf_event_alloc(struct perf_event_attr *attr, - int cpu, - struct perf_event_context *ctx, - struct perf_event *group_leader, - struct perf_event *parent_event, - perf_overflow_handler_t overflow_handler, - gfp_t gfpflags) -{ - const struct pmu *pmu; +perf_event_alloc(struct perf_event_attr *attr, int cpu, + struct task_struct *task, + struct perf_event *group_leader, + struct perf_event *parent_event, + perf_overflow_handler_t overflow_handler) +{ + struct pmu *pmu; struct perf_event *event; struct hw_perf_event *hwc; long err; - event = kzalloc(sizeof(*event), gfpflags); + event = kzalloc(sizeof(*event), GFP_KERNEL); if (!event) return ERR_PTR(-ENOMEM); @@ -4857,6 +5274,7 @@ perf_event_alloc(struct perf_event_attr *attr, INIT_LIST_HEAD(&event->event_entry); INIT_LIST_HEAD(&event->sibling_list); init_waitqueue_head(&event->waitq); + init_irq_work(&event->pending, perf_pending_event); mutex_init(&event->mmap_mutex); @@ -4864,7 +5282,6 @@ perf_event_alloc(struct perf_event_attr *attr, event->attr = *attr; event->group_leader = group_leader; event->pmu = NULL; - event->ctx = ctx; event->oncpu = -1; event->parent = parent_event; @@ -4874,6 +5291,17 @@ perf_event_alloc(struct perf_event_attr *attr, event->state = PERF_EVENT_STATE_INACTIVE; + if (task) { + event->attach_state = PERF_ATTACH_TASK; +#ifdef CONFIG_HAVE_HW_BREAKPOINT + /* + * hw_breakpoint is a bit difficult here.. + */ + if (attr->type == PERF_TYPE_BREAKPOINT) + event->hw.bp_target = task; +#endif + } + if (!overflow_handler && parent_event) overflow_handler = parent_event->overflow_handler; @@ -4898,29 +5326,8 @@ perf_event_alloc(struct perf_event_attr *attr, if (attr->inherit && (attr->read_format & PERF_FORMAT_GROUP)) goto done; - switch (attr->type) { - case PERF_TYPE_RAW: - case PERF_TYPE_HARDWARE: - case PERF_TYPE_HW_CACHE: - pmu = hw_perf_event_init(event); - break; - - case PERF_TYPE_SOFTWARE: - pmu = sw_perf_event_init(event); - break; - - case PERF_TYPE_TRACEPOINT: - pmu = tp_perf_event_init(event); - break; + pmu = perf_init_event(event); - case PERF_TYPE_BREAKPOINT: - pmu = bp_perf_event_init(event); - break; - - - default: - break; - } done: err = 0; if (!pmu) @@ -4938,13 +5345,21 @@ done: event->pmu = pmu; if (!event->parent) { - atomic_inc(&nr_events); + if (event->attach_state & PERF_ATTACH_TASK) + jump_label_inc(&perf_task_events); if (event->attr.mmap || event->attr.mmap_data) atomic_inc(&nr_mmap_events); if (event->attr.comm) atomic_inc(&nr_comm_events); if (event->attr.task) atomic_inc(&nr_task_events); + if (event->attr.sample_type & PERF_SAMPLE_CALLCHAIN) { + err = get_callchain_buffers(); + if (err) { + free_event(event); + return ERR_PTR(err); + } + } } return event; @@ -5092,12 +5507,16 @@ SYSCALL_DEFINE5(perf_event_open, struct perf_event_attr __user *, attr_uptr, pid_t, pid, int, cpu, int, group_fd, unsigned long, flags) { - struct perf_event *event, *group_leader = NULL, *output_event = NULL; + struct perf_event *group_leader = NULL, *output_event = NULL; + struct perf_event *event, *sibling; struct perf_event_attr attr; struct perf_event_context *ctx; struct file *event_file = NULL; struct file *group_file = NULL; + struct task_struct *task = NULL; + struct pmu *pmu; int event_fd; + int move_group = 0; int fput_needed = 0; int err; @@ -5123,20 +5542,11 @@ SYSCALL_DEFINE5(perf_event_open, if (event_fd < 0) return event_fd; - /* - * Get the target context (task or percpu): - */ - ctx = find_get_context(pid, cpu); - if (IS_ERR(ctx)) { - err = PTR_ERR(ctx); - goto err_fd; - } - if (group_fd != -1) { group_leader = perf_fget_light(group_fd, &fput_needed); if (IS_ERR(group_leader)) { err = PTR_ERR(group_leader); - goto err_put_context; + goto err_fd; } group_file = group_leader->filp; if (flags & PERF_FLAG_FD_OUTPUT) @@ -5145,6 +5555,58 @@ SYSCALL_DEFINE5(perf_event_open, group_leader = NULL; } + if (pid != -1) { + task = find_lively_task_by_vpid(pid); + if (IS_ERR(task)) { + err = PTR_ERR(task); + goto err_group_fd; + } + } + + event = perf_event_alloc(&attr, cpu, task, group_leader, NULL, NULL); + if (IS_ERR(event)) { + err = PTR_ERR(event); + goto err_task; + } + + /* + * Special case software events and allow them to be part of + * any hardware group. + */ + pmu = event->pmu; + + if (group_leader && + (is_software_event(event) != is_software_event(group_leader))) { + if (is_software_event(event)) { + /* + * If event and group_leader are not both a software + * event, and event is, then group leader is not. + * + * Allow the addition of software events to !software + * groups, this is safe because software events never + * fail to schedule. + */ + pmu = group_leader->pmu; + } else if (is_software_event(group_leader) && + (group_leader->group_flags & PERF_GROUP_SOFTWARE)) { + /* + * In case the group is a pure software group, and we + * try to add a hardware event, move the whole group to + * the hardware context. + */ + move_group = 1; + } + } + + /* + * Get the target context (task or percpu): + */ + ctx = find_get_context(pmu, task, cpu); + if (IS_ERR(ctx)) { + err = PTR_ERR(ctx); + goto err_alloc; + } + /* * Look up the group leader (we will attach this event to it): */ @@ -5156,42 +5618,66 @@ SYSCALL_DEFINE5(perf_event_open, * becoming part of another group-sibling): */ if (group_leader->group_leader != group_leader) - goto err_put_context; + goto err_context; /* * Do not allow to attach to a group in a different * task or CPU context: */ - if (group_leader->ctx != ctx) - goto err_put_context; + if (move_group) { + if (group_leader->ctx->type != ctx->type) + goto err_context; + } else { + if (group_leader->ctx != ctx) + goto err_context; + } + /* * Only a group leader can be exclusive or pinned */ if (attr.exclusive || attr.pinned) - goto err_put_context; - } - - event = perf_event_alloc(&attr, cpu, ctx, group_leader, - NULL, NULL, GFP_KERNEL); - if (IS_ERR(event)) { - err = PTR_ERR(event); - goto err_put_context; + goto err_context; } if (output_event) { err = perf_event_set_output(event, output_event); if (err) - goto err_free_put_context; + goto err_context; } event_file = anon_inode_getfile("[perf_event]", &perf_fops, event, O_RDWR); if (IS_ERR(event_file)) { err = PTR_ERR(event_file); - goto err_free_put_context; + goto err_context; + } + + if (move_group) { + struct perf_event_context *gctx = group_leader->ctx; + + mutex_lock(&gctx->mutex); + perf_event_remove_from_context(group_leader); + list_for_each_entry(sibling, &group_leader->sibling_list, + group_entry) { + perf_event_remove_from_context(sibling); + put_ctx(gctx); + } + mutex_unlock(&gctx->mutex); + put_ctx(gctx); } event->filp = event_file; WARN_ON_ONCE(ctx->parent_ctx); mutex_lock(&ctx->mutex); + + if (move_group) { + perf_install_in_context(ctx, group_leader, cpu); + get_ctx(ctx); + list_for_each_entry(sibling, &group_leader->sibling_list, + group_entry) { + perf_install_in_context(ctx, sibling, cpu); + get_ctx(ctx); + } + } + perf_install_in_context(ctx, event, cpu); ++ctx->generation; mutex_unlock(&ctx->mutex); @@ -5212,11 +5698,15 @@ SYSCALL_DEFINE5(perf_event_open, fd_install(event_fd, event_file); return event_fd; -err_free_put_context: +err_context: + put_ctx(ctx); +err_alloc: free_event(event); -err_put_context: +err_task: + if (task) + put_task_struct(task); +err_group_fd: fput_light(group_file, fput_needed); - put_ctx(ctx); err_fd: put_unused_fd(event_fd); return err; @@ -5227,32 +5717,31 @@ err_fd: * * @attr: attributes of the counter to create * @cpu: cpu in which the counter is bound - * @pid: task to profile + * @task: task to profile (NULL for percpu) */ struct perf_event * perf_event_create_kernel_counter(struct perf_event_attr *attr, int cpu, - pid_t pid, + struct task_struct *task, perf_overflow_handler_t overflow_handler) { - struct perf_event *event; struct perf_event_context *ctx; + struct perf_event *event; int err; /* * Get the target context (task or percpu): */ - ctx = find_get_context(pid, cpu); - if (IS_ERR(ctx)) { - err = PTR_ERR(ctx); - goto err_exit; - } - - event = perf_event_alloc(attr, cpu, ctx, NULL, - NULL, overflow_handler, GFP_KERNEL); + event = perf_event_alloc(attr, cpu, task, NULL, NULL, overflow_handler); if (IS_ERR(event)) { err = PTR_ERR(event); - goto err_put_context; + goto err; + } + + ctx = find_get_context(event->pmu, task, cpu); + if (IS_ERR(ctx)) { + err = PTR_ERR(ctx); + goto err_free; } event->filp = NULL; @@ -5270,112 +5759,13 @@ perf_event_create_kernel_counter(struct perf_event_attr *attr, int cpu, return event; - err_put_context: - put_ctx(ctx); - err_exit: +err_free: + free_event(event); +err: return ERR_PTR(err); } EXPORT_SYMBOL_GPL(perf_event_create_kernel_counter); -/* - * inherit a event from parent task to child task: - */ -static struct perf_event * -inherit_event(struct perf_event *parent_event, - struct task_struct *parent, - struct perf_event_context *parent_ctx, - struct task_struct *child, - struct perf_event *group_leader, - struct perf_event_context *child_ctx) -{ - struct perf_event *child_event; - - /* - * Instead of creating recursive hierarchies of events, - * we link inherited events back to the original parent, - * which has a filp for sure, which we use as the reference - * count: - */ - if (parent_event->parent) - parent_event = parent_event->parent; - - child_event = perf_event_alloc(&parent_event->attr, - parent_event->cpu, child_ctx, - group_leader, parent_event, - NULL, GFP_KERNEL); - if (IS_ERR(child_event)) - return child_event; - get_ctx(child_ctx); - - /* - * Make the child state follow the state of the parent event, - * not its attr.disabled bit. We hold the parent's mutex, - * so we won't race with perf_event_{en, dis}able_family. - */ - if (parent_event->state >= PERF_EVENT_STATE_INACTIVE) - child_event->state = PERF_EVENT_STATE_INACTIVE; - else - child_event->state = PERF_EVENT_STATE_OFF; - - if (parent_event->attr.freq) { - u64 sample_period = parent_event->hw.sample_period; - struct hw_perf_event *hwc = &child_event->hw; - - hwc->sample_period = sample_period; - hwc->last_period = sample_period; - - local64_set(&hwc->period_left, sample_period); - } - - child_event->overflow_handler = parent_event->overflow_handler; - - /* - * Link it up in the child's context: - */ - add_event_to_ctx(child_event, child_ctx); - - /* - * Get a reference to the parent filp - we will fput it - * when the child event exits. This is safe to do because - * we are in the parent and we know that the filp still - * exists and has a nonzero count: - */ - atomic_long_inc(&parent_event->filp->f_count); - - /* - * Link this into the parent event's child list - */ - WARN_ON_ONCE(parent_event->ctx->parent_ctx); - mutex_lock(&parent_event->child_mutex); - list_add_tail(&child_event->child_list, &parent_event->child_list); - mutex_unlock(&parent_event->child_mutex); - - return child_event; -} - -static int inherit_group(struct perf_event *parent_event, - struct task_struct *parent, - struct perf_event_context *parent_ctx, - struct task_struct *child, - struct perf_event_context *child_ctx) -{ - struct perf_event *leader; - struct perf_event *sub; - struct perf_event *child_ctr; - - leader = inherit_event(parent_event, parent, parent_ctx, - child, NULL, child_ctx); - if (IS_ERR(leader)) - return PTR_ERR(leader); - list_for_each_entry(sub, &parent_event->sibling_list, group_entry) { - child_ctr = inherit_event(sub, parent, parent_ctx, - child, leader, child_ctx); - if (IS_ERR(child_ctr)) - return PTR_ERR(child_ctr); - } - return 0; -} - static void sync_child_event(struct perf_event *child_event, struct task_struct *child) { @@ -5432,16 +5822,13 @@ __perf_event_exit_task(struct perf_event *child_event, } } -/* - * When a child task exits, feed back event values to parent events. - */ -void perf_event_exit_task(struct task_struct *child) +static void perf_event_exit_task_context(struct task_struct *child, int ctxn) { struct perf_event *child_event, *tmp; struct perf_event_context *child_ctx; unsigned long flags; - if (likely(!child->perf_event_ctxp)) { + if (likely(!child->perf_event_ctxp[ctxn])) { perf_event_task(child, NULL, 0); return; } @@ -5453,8 +5840,8 @@ void perf_event_exit_task(struct task_struct *child) * scheduled, so we are now safe from rescheduling changing * our context. */ - child_ctx = child->perf_event_ctxp; - __perf_event_task_sched_out(child_ctx); + child_ctx = child->perf_event_ctxp[ctxn]; + task_ctx_sched_out(child_ctx, EVENT_ALL); /* * Take the context lock here so that if find_get_context is @@ -5462,7 +5849,7 @@ void perf_event_exit_task(struct task_struct *child) * incremented the context's refcount before we do put_ctx below. */ raw_spin_lock(&child_ctx->lock); - child->perf_event_ctxp = NULL; + child->perf_event_ctxp[ctxn] = NULL; /* * If this context is a clone; unclone it so it can't get * swapped to another process while we're removing all @@ -5515,6 +5902,17 @@ again: put_ctx(child_ctx); } +/* + * When a child task exits, feed back event values to parent events. + */ +void perf_event_exit_task(struct task_struct *child) +{ + int ctxn; + + for_each_task_context_nr(ctxn) + perf_event_exit_task_context(child, ctxn); +} + static void perf_free_event(struct perf_event *event, struct perf_event_context *ctx) { @@ -5536,48 +5934,166 @@ static void perf_free_event(struct perf_event *event, /* * free an unexposed, unused context as created by inheritance by - * init_task below, used by fork() in case of fail. + * perf_event_init_task below, used by fork() in case of fail. */ void perf_event_free_task(struct task_struct *task) { - struct perf_event_context *ctx = task->perf_event_ctxp; + struct perf_event_context *ctx; struct perf_event *event, *tmp; + int ctxn; - if (!ctx) - return; + for_each_task_context_nr(ctxn) { + ctx = task->perf_event_ctxp[ctxn]; + if (!ctx) + continue; - mutex_lock(&ctx->mutex); + mutex_lock(&ctx->mutex); again: - list_for_each_entry_safe(event, tmp, &ctx->pinned_groups, group_entry) - perf_free_event(event, ctx); + list_for_each_entry_safe(event, tmp, &ctx->pinned_groups, + group_entry) + perf_free_event(event, ctx); - list_for_each_entry_safe(event, tmp, &ctx->flexible_groups, - group_entry) - perf_free_event(event, ctx); + list_for_each_entry_safe(event, tmp, &ctx->flexible_groups, + group_entry) + perf_free_event(event, ctx); - if (!list_empty(&ctx->pinned_groups) || - !list_empty(&ctx->flexible_groups)) - goto again; + if (!list_empty(&ctx->pinned_groups) || + !list_empty(&ctx->flexible_groups)) + goto again; - mutex_unlock(&ctx->mutex); + mutex_unlock(&ctx->mutex); - put_ctx(ctx); + put_ctx(ctx); + } +} + +void perf_event_delayed_put(struct task_struct *task) +{ + int ctxn; + + for_each_task_context_nr(ctxn) + WARN_ON_ONCE(task->perf_event_ctxp[ctxn]); +} + +/* + * inherit a event from parent task to child task: + */ +static struct perf_event * +inherit_event(struct perf_event *parent_event, + struct task_struct *parent, + struct perf_event_context *parent_ctx, + struct task_struct *child, + struct perf_event *group_leader, + struct perf_event_context *child_ctx) +{ + struct perf_event *child_event; + unsigned long flags; + + /* + * Instead of creating recursive hierarchies of events, + * we link inherited events back to the original parent, + * which has a filp for sure, which we use as the reference + * count: + */ + if (parent_event->parent) + parent_event = parent_event->parent; + + child_event = perf_event_alloc(&parent_event->attr, + parent_event->cpu, + child, + group_leader, parent_event, + NULL); + if (IS_ERR(child_event)) + return child_event; + get_ctx(child_ctx); + + /* + * Make the child state follow the state of the parent event, + * not its attr.disabled bit. We hold the parent's mutex, + * so we won't race with perf_event_{en, dis}able_family. + */ + if (parent_event->state >= PERF_EVENT_STATE_INACTIVE) + child_event->state = PERF_EVENT_STATE_INACTIVE; + else + child_event->state = PERF_EVENT_STATE_OFF; + + if (parent_event->attr.freq) { + u64 sample_period = parent_event->hw.sample_period; + struct hw_perf_event *hwc = &child_event->hw; + + hwc->sample_period = sample_period; + hwc->last_period = sample_period; + + local64_set(&hwc->period_left, sample_period); + } + + child_event->ctx = child_ctx; + child_event->overflow_handler = parent_event->overflow_handler; + + /* + * Link it up in the child's context: + */ + raw_spin_lock_irqsave(&child_ctx->lock, flags); + add_event_to_ctx(child_event, child_ctx); + raw_spin_unlock_irqrestore(&child_ctx->lock, flags); + + /* + * Get a reference to the parent filp - we will fput it + * when the child event exits. This is safe to do because + * we are in the parent and we know that the filp still + * exists and has a nonzero count: + */ + atomic_long_inc(&parent_event->filp->f_count); + + /* + * Link this into the parent event's child list + */ + WARN_ON_ONCE(parent_event->ctx->parent_ctx); + mutex_lock(&parent_event->child_mutex); + list_add_tail(&child_event->child_list, &parent_event->child_list); + mutex_unlock(&parent_event->child_mutex); + + return child_event; +} + +static int inherit_group(struct perf_event *parent_event, + struct task_struct *parent, + struct perf_event_context *parent_ctx, + struct task_struct *child, + struct perf_event_context *child_ctx) +{ + struct perf_event *leader; + struct perf_event *sub; + struct perf_event *child_ctr; + + leader = inherit_event(parent_event, parent, parent_ctx, + child, NULL, child_ctx); + if (IS_ERR(leader)) + return PTR_ERR(leader); + list_for_each_entry(sub, &parent_event->sibling_list, group_entry) { + child_ctr = inherit_event(sub, parent, parent_ctx, + child, leader, child_ctx); + if (IS_ERR(child_ctr)) + return PTR_ERR(child_ctr); + } + return 0; } static int inherit_task_group(struct perf_event *event, struct task_struct *parent, struct perf_event_context *parent_ctx, - struct task_struct *child, + struct task_struct *child, int ctxn, int *inherited_all) { int ret; - struct perf_event_context *child_ctx = child->perf_event_ctxp; + struct perf_event_context *child_ctx; if (!event->attr.inherit) { *inherited_all = 0; return 0; } + child_ctx = child->perf_event_ctxp[ctxn]; if (!child_ctx) { /* * This is executed from the parent task context, so @@ -5586,14 +6102,11 @@ inherit_task_group(struct perf_event *event, struct task_struct *parent, * child. */ - child_ctx = kzalloc(sizeof(struct perf_event_context), - GFP_KERNEL); + child_ctx = alloc_perf_context(event->pmu, child); if (!child_ctx) return -ENOMEM; - __perf_event_init_context(child_ctx, child); - child->perf_event_ctxp = child_ctx; - get_task_struct(child); + child->perf_event_ctxp[ctxn] = child_ctx; } ret = inherit_group(event, parent, parent_ctx, @@ -5605,11 +6118,10 @@ inherit_task_group(struct perf_event *event, struct task_struct *parent, return ret; } - /* * Initialize the perf_event context in task_struct */ -int perf_event_init_task(struct task_struct *child) +int perf_event_init_context(struct task_struct *child, int ctxn) { struct perf_event_context *child_ctx, *parent_ctx; struct perf_event_context *cloned_ctx; @@ -5618,19 +6130,19 @@ int perf_event_init_task(struct task_struct *child) int inherited_all = 1; int ret = 0; - child->perf_event_ctxp = NULL; + child->perf_event_ctxp[ctxn] = NULL; mutex_init(&child->perf_event_mutex); INIT_LIST_HEAD(&child->perf_event_list); - if (likely(!parent->perf_event_ctxp)) + if (likely(!parent->perf_event_ctxp[ctxn])) return 0; /* * If the parent's context is a clone, pin it so it won't get * swapped under us. */ - parent_ctx = perf_pin_task_context(parent); + parent_ctx = perf_pin_task_context(parent, ctxn); /* * No need to check if parent_ctx != NULL here; since we saw @@ -5650,20 +6162,20 @@ int perf_event_init_task(struct task_struct *child) * the list, not manipulating it: */ list_for_each_entry(event, &parent_ctx->pinned_groups, group_entry) { - ret = inherit_task_group(event, parent, parent_ctx, child, - &inherited_all); + ret = inherit_task_group(event, parent, parent_ctx, + child, ctxn, &inherited_all); if (ret) break; } list_for_each_entry(event, &parent_ctx->flexible_groups, group_entry) { - ret = inherit_task_group(event, parent, parent_ctx, child, - &inherited_all); + ret = inherit_task_group(event, parent, parent_ctx, + child, ctxn, &inherited_all); if (ret) break; } - child_ctx = child->perf_event_ctxp; + child_ctx = child->perf_event_ctxp[ctxn]; if (child_ctx && inherited_all) { /* @@ -5692,63 +6204,98 @@ int perf_event_init_task(struct task_struct *child) return ret; } +/* + * Initialize the perf_event context in task_struct + */ +int perf_event_init_task(struct task_struct *child) +{ + int ctxn, ret; + + for_each_task_context_nr(ctxn) { + ret = perf_event_init_context(child, ctxn); + if (ret) + return ret; + } + + return 0; +} + static void __init perf_event_init_all_cpus(void) { + struct swevent_htable *swhash; int cpu; - struct perf_cpu_context *cpuctx; for_each_possible_cpu(cpu) { - cpuctx = &per_cpu(perf_cpu_context, cpu); - mutex_init(&cpuctx->hlist_mutex); - __perf_event_init_context(&cpuctx->ctx, NULL); + swhash = &per_cpu(swevent_htable, cpu); + mutex_init(&swhash->hlist_mutex); + INIT_LIST_HEAD(&per_cpu(rotation_list, cpu)); } } static void __cpuinit perf_event_init_cpu(int cpu) { - struct perf_cpu_context *cpuctx; - - cpuctx = &per_cpu(perf_cpu_context, cpu); + struct swevent_htable *swhash = &per_cpu(swevent_htable, cpu); - spin_lock(&perf_resource_lock); - cpuctx->max_pertask = perf_max_events - perf_reserved_percpu; - spin_unlock(&perf_resource_lock); - - mutex_lock(&cpuctx->hlist_mutex); - if (cpuctx->hlist_refcount > 0) { + mutex_lock(&swhash->hlist_mutex); + if (swhash->hlist_refcount > 0) { struct swevent_hlist *hlist; - hlist = kzalloc(sizeof(*hlist), GFP_KERNEL); - WARN_ON_ONCE(!hlist); - rcu_assign_pointer(cpuctx->swevent_hlist, hlist); + hlist = kzalloc_node(sizeof(*hlist), GFP_KERNEL, cpu_to_node(cpu)); + WARN_ON(!hlist); + rcu_assign_pointer(swhash->swevent_hlist, hlist); } - mutex_unlock(&cpuctx->hlist_mutex); + mutex_unlock(&swhash->hlist_mutex); } #ifdef CONFIG_HOTPLUG_CPU -static void __perf_event_exit_cpu(void *info) +static void perf_pmu_rotate_stop(struct pmu *pmu) { - struct perf_cpu_context *cpuctx = &__get_cpu_var(perf_cpu_context); - struct perf_event_context *ctx = &cpuctx->ctx; + struct perf_cpu_context *cpuctx = this_cpu_ptr(pmu->pmu_cpu_context); + + WARN_ON(!irqs_disabled()); + + list_del_init(&cpuctx->rotation_list); +} + +static void __perf_event_exit_context(void *__info) +{ + struct perf_event_context *ctx = __info; struct perf_event *event, *tmp; + perf_pmu_rotate_stop(ctx->pmu); + list_for_each_entry_safe(event, tmp, &ctx->pinned_groups, group_entry) __perf_event_remove_from_context(event); list_for_each_entry_safe(event, tmp, &ctx->flexible_groups, group_entry) __perf_event_remove_from_context(event); } + +static void perf_event_exit_cpu_context(int cpu) +{ + struct perf_event_context *ctx; + struct pmu *pmu; + int idx; + + idx = srcu_read_lock(&pmus_srcu); + list_for_each_entry_rcu(pmu, &pmus, entry) { + ctx = &per_cpu_ptr(pmu->pmu_cpu_context, cpu)->ctx; + + mutex_lock(&ctx->mutex); + smp_call_function_single(cpu, __perf_event_exit_context, ctx, 1); + mutex_unlock(&ctx->mutex); + } + srcu_read_unlock(&pmus_srcu, idx); +} + static void perf_event_exit_cpu(int cpu) { - struct perf_cpu_context *cpuctx = &per_cpu(perf_cpu_context, cpu); - struct perf_event_context *ctx = &cpuctx->ctx; + struct swevent_htable *swhash = &per_cpu(swevent_htable, cpu); - mutex_lock(&cpuctx->hlist_mutex); - swevent_hlist_release(cpuctx); - mutex_unlock(&cpuctx->hlist_mutex); + mutex_lock(&swhash->hlist_mutex); + swevent_hlist_release(swhash); + mutex_unlock(&swhash->hlist_mutex); - mutex_lock(&ctx->mutex); - smp_call_function_single(cpu, __perf_event_exit_cpu, NULL, 1); - mutex_unlock(&ctx->mutex); + perf_event_exit_cpu_context(cpu); } #else static inline void perf_event_exit_cpu(int cpu) { } @@ -5778,118 +6325,13 @@ perf_cpu_notify(struct notifier_block *self, unsigned long action, void *hcpu) return NOTIFY_OK; } -/* - * This has to have a higher priority than migration_notifier in sched.c. - */ -static struct notifier_block __cpuinitdata perf_cpu_nb = { - .notifier_call = perf_cpu_notify, - .priority = 20, -}; - void __init perf_event_init(void) { perf_event_init_all_cpus(); - perf_cpu_notify(&perf_cpu_nb, (unsigned long)CPU_UP_PREPARE, - (void *)(long)smp_processor_id()); - perf_cpu_notify(&perf_cpu_nb, (unsigned long)CPU_ONLINE, - (void *)(long)smp_processor_id()); - register_cpu_notifier(&perf_cpu_nb); -} - -static ssize_t perf_show_reserve_percpu(struct sysdev_class *class, - struct sysdev_class_attribute *attr, - char *buf) -{ - return sprintf(buf, "%d\n", perf_reserved_percpu); -} - -static ssize_t -perf_set_reserve_percpu(struct sysdev_class *class, - struct sysdev_class_attribute *attr, - const char *buf, - size_t count) -{ - struct perf_cpu_context *cpuctx; - unsigned long val; - int err, cpu, mpt; - - err = strict_strtoul(buf, 10, &val); - if (err) - return err; - if (val > perf_max_events) - return -EINVAL; - - spin_lock(&perf_resource_lock); - perf_reserved_percpu = val; - for_each_online_cpu(cpu) { - cpuctx = &per_cpu(perf_cpu_context, cpu); - raw_spin_lock_irq(&cpuctx->ctx.lock); - mpt = min(perf_max_events - cpuctx->ctx.nr_events, - perf_max_events - perf_reserved_percpu); - cpuctx->max_pertask = mpt; - raw_spin_unlock_irq(&cpuctx->ctx.lock); - } - spin_unlock(&perf_resource_lock); - - return count; -} - -static ssize_t perf_show_overcommit(struct sysdev_class *class, - struct sysdev_class_attribute *attr, - char *buf) -{ - return sprintf(buf, "%d\n", perf_overcommit); -} - -static ssize_t -perf_set_overcommit(struct sysdev_class *class, - struct sysdev_class_attribute *attr, - const char *buf, size_t count) -{ - unsigned long val; - int err; - - err = strict_strtoul(buf, 10, &val); - if (err) - return err; - if (val > 1) - return -EINVAL; - - spin_lock(&perf_resource_lock); - perf_overcommit = val; - spin_unlock(&perf_resource_lock); - - return count; -} - -static SYSDEV_CLASS_ATTR( - reserve_percpu, - 0644, - perf_show_reserve_percpu, - perf_set_reserve_percpu - ); - -static SYSDEV_CLASS_ATTR( - overcommit, - 0644, - perf_show_overcommit, - perf_set_overcommit - ); - -static struct attribute *perfclass_attrs[] = { - &attr_reserve_percpu.attr, - &attr_overcommit.attr, - NULL -}; - -static struct attribute_group perfclass_attr_group = { - .attrs = perfclass_attrs, - .name = "perf_events", -}; - -static int __init perf_event_sysfs_init(void) -{ - return sysfs_create_group(&cpu_sysdev_class.kset.kobj, - &perfclass_attr_group); + init_srcu_struct(&pmus_srcu); + perf_pmu_register(&perf_swevent); + perf_pmu_register(&perf_cpu_clock); + perf_pmu_register(&perf_task_clock); + perf_tp_register(); + perf_cpu_notifier(perf_cpu_notify); } -device_initcall(perf_event_sysfs_init); diff --git a/kernel/pid.c b/kernel/pid.c index d55c6fb8d087..39b65b69584f 100644 --- a/kernel/pid.c +++ b/kernel/pid.c @@ -401,7 +401,7 @@ struct task_struct *pid_task(struct pid *pid, enum pid_type type) struct task_struct *result = NULL; if (pid) { struct hlist_node *first; - first = rcu_dereference_check(pid->tasks[type].first, + first = rcu_dereference_check(hlist_first_rcu(&pid->tasks[type]), rcu_read_lock_held() || lockdep_tasklist_lock_is_held()); if (first) @@ -416,6 +416,7 @@ EXPORT_SYMBOL(pid_task); */ struct task_struct *find_task_by_pid_ns(pid_t nr, struct pid_namespace *ns) { + rcu_lockdep_assert(rcu_read_lock_held()); return pid_task(find_pid_ns(nr, ns), PIDTYPE_PID); } diff --git a/kernel/power/Kconfig b/kernel/power/Kconfig index ca6066a6952e..29bff6117abc 100644 --- a/kernel/power/Kconfig +++ b/kernel/power/Kconfig @@ -86,6 +86,7 @@ config PM_SLEEP_SMP depends on SMP depends on ARCH_SUSPEND_POSSIBLE || ARCH_HIBERNATION_POSSIBLE depends on PM_SLEEP + select HOTPLUG select HOTPLUG_CPU default y @@ -137,6 +138,8 @@ config SUSPEND_FREEZER config HIBERNATION bool "Hibernation (aka 'suspend to disk')" depends on PM && SWAP && ARCH_HIBERNATION_POSSIBLE + select LZO_COMPRESS + select LZO_DECOMPRESS select SUSPEND_NVS if HAS_IOMEM ---help--- Enable the suspend to disk (STD) functionality, which is usually @@ -242,3 +245,17 @@ config PM_OPS bool depends on PM_SLEEP || PM_RUNTIME default y + +config PM_OPP + bool "Operating Performance Point (OPP) Layer library" + depends on PM + ---help--- + SOCs have a standard set of tuples consisting of frequency and + voltage pairs that the device will support per voltage domain. This + is called Operating Performance Point or OPP. The actual definitions + of OPP varies over silicon within the same family of devices. + + OPP layer organizes the data internally using device pointers + representing individual voltage domains and provides SOC + implementations a ready to use framework to manage OPPs. + For more information, read <file:Documentation/power/opp.txt> diff --git a/kernel/power/hibernate.c b/kernel/power/hibernate.c index 8dc31e02ae12..657272e91d0a 100644 --- a/kernel/power/hibernate.c +++ b/kernel/power/hibernate.c @@ -29,6 +29,7 @@ #include "power.h" +static int nocompress = 0; static int noresume = 0; static char resume_file[256] = CONFIG_PM_STD_PARTITION; dev_t swsusp_resume_device; @@ -638,6 +639,8 @@ int hibernate(void) if (hibernation_mode == HIBERNATION_PLATFORM) flags |= SF_PLATFORM_MODE; + if (nocompress) + flags |= SF_NOCOMPRESS_MODE; pr_debug("PM: writing image.\n"); error = swsusp_write(flags); swsusp_free(); @@ -705,7 +708,7 @@ static int software_resume(void) goto Unlock; } - pr_debug("PM: Checking image partition %s\n", resume_file); + pr_debug("PM: Checking hibernation image partition %s\n", resume_file); /* Check if the device is there */ swsusp_resume_device = name_to_dev_t(resume_file); @@ -730,10 +733,10 @@ static int software_resume(void) } Check_image: - pr_debug("PM: Resume from partition %d:%d\n", + pr_debug("PM: Hibernation image partition %d:%d present\n", MAJOR(swsusp_resume_device), MINOR(swsusp_resume_device)); - pr_debug("PM: Checking hibernation image.\n"); + pr_debug("PM: Looking for hibernation image.\n"); error = swsusp_check(); if (error) goto Unlock; @@ -765,14 +768,14 @@ static int software_resume(void) goto Done; } - pr_debug("PM: Reading hibernation image.\n"); + pr_debug("PM: Loading hibernation image.\n"); error = swsusp_read(&flags); swsusp_close(FMODE_READ); if (!error) hibernation_restore(flags & SF_PLATFORM_MODE); - printk(KERN_ERR "PM: Restore failed, recovering.\n"); + printk(KERN_ERR "PM: Failed to load hibernation image, recovering.\n"); swsusp_free(); thaw_processes(); Done: @@ -785,7 +788,7 @@ static int software_resume(void) /* For success case, the suspend path will release the lock */ Unlock: mutex_unlock(&pm_mutex); - pr_debug("PM: Resume from disk failed.\n"); + pr_debug("PM: Hibernation image not present or could not be loaded.\n"); return error; close_finish: swsusp_close(FMODE_READ); @@ -1004,6 +1007,15 @@ static int __init resume_offset_setup(char *str) return 1; } +static int __init hibernate_setup(char *str) +{ + if (!strncmp(str, "noresume", 8)) + noresume = 1; + else if (!strncmp(str, "nocompress", 10)) + nocompress = 1; + return 1; +} + static int __init noresume_setup(char *str) { noresume = 1; @@ -1013,3 +1025,4 @@ static int __init noresume_setup(char *str) __setup("noresume", noresume_setup); __setup("resume_offset=", resume_offset_setup); __setup("resume=", resume_setup); +__setup("hibernate=", hibernate_setup); diff --git a/kernel/power/main.c b/kernel/power/main.c index 62b0bc6e4983..7b5db6a8561e 100644 --- a/kernel/power/main.c +++ b/kernel/power/main.c @@ -237,18 +237,18 @@ static ssize_t wakeup_count_show(struct kobject *kobj, struct kobj_attribute *attr, char *buf) { - unsigned long val; + unsigned int val; - return pm_get_wakeup_count(&val) ? sprintf(buf, "%lu\n", val) : -EINTR; + return pm_get_wakeup_count(&val) ? sprintf(buf, "%u\n", val) : -EINTR; } static ssize_t wakeup_count_store(struct kobject *kobj, struct kobj_attribute *attr, const char *buf, size_t n) { - unsigned long val; + unsigned int val; - if (sscanf(buf, "%lu", &val) == 1) { + if (sscanf(buf, "%u", &val) == 1) { if (pm_save_wakeup_count(val)) return n; } @@ -281,12 +281,30 @@ pm_trace_store(struct kobject *kobj, struct kobj_attribute *attr, } power_attr(pm_trace); + +static ssize_t pm_trace_dev_match_show(struct kobject *kobj, + struct kobj_attribute *attr, + char *buf) +{ + return show_trace_dev_match(buf, PAGE_SIZE); +} + +static ssize_t +pm_trace_dev_match_store(struct kobject *kobj, struct kobj_attribute *attr, + const char *buf, size_t n) +{ + return -EINVAL; +} + +power_attr(pm_trace_dev_match); + #endif /* CONFIG_PM_TRACE */ static struct attribute * g[] = { &state_attr.attr, #ifdef CONFIG_PM_TRACE &pm_trace_attr.attr, + &pm_trace_dev_match_attr.attr, #endif #ifdef CONFIG_PM_SLEEP &pm_async_attr.attr, @@ -308,7 +326,7 @@ EXPORT_SYMBOL_GPL(pm_wq); static int __init pm_start_workqueue(void) { - pm_wq = create_freezeable_workqueue("pm"); + pm_wq = alloc_workqueue("pm", WQ_FREEZEABLE, 0); return pm_wq ? 0 : -ENOMEM; } @@ -321,6 +339,7 @@ static int __init pm_init(void) int error = pm_start_workqueue(); if (error) return error; + hibernate_image_size_init(); power_kobj = kobject_create_and_add("power", NULL); if (!power_kobj) return -ENOMEM; diff --git a/kernel/power/power.h b/kernel/power/power.h index 006270fe382d..03634be55f62 100644 --- a/kernel/power/power.h +++ b/kernel/power/power.h @@ -14,6 +14,9 @@ struct swsusp_info { } __attribute__((aligned(PAGE_SIZE))); #ifdef CONFIG_HIBERNATION +/* kernel/power/snapshot.c */ +extern void __init hibernate_image_size_init(void); + #ifdef CONFIG_ARCH_HIBERNATION_HEADER /* Maximum size of architecture specific data in a hibernation header */ #define MAX_ARCH_HEADER_SIZE (sizeof(struct new_utsname) + 4) @@ -49,7 +52,11 @@ static inline char *check_image_kernel(struct swsusp_info *info) extern int hibernation_snapshot(int platform_mode); extern int hibernation_restore(int platform_mode); extern int hibernation_platform_enter(void); -#endif + +#else /* !CONFIG_HIBERNATION */ + +static inline void hibernate_image_size_init(void) {} +#endif /* !CONFIG_HIBERNATION */ extern int pfn_is_nosave(unsigned long); @@ -134,6 +141,7 @@ extern int swsusp_swap_in_use(void); * the image header. */ #define SF_PLATFORM_MODE 1 +#define SF_NOCOMPRESS_MODE 2 /* kernel/power/hibernate.c */ extern int swsusp_check(void); diff --git a/kernel/power/process.c b/kernel/power/process.c index 028a99598f49..e50b4c1b2a0f 100644 --- a/kernel/power/process.c +++ b/kernel/power/process.c @@ -40,6 +40,7 @@ static int try_to_freeze_tasks(bool sig_only) struct timeval start, end; u64 elapsed_csecs64; unsigned int elapsed_csecs; + bool wakeup = false; do_gettimeofday(&start); @@ -78,6 +79,11 @@ static int try_to_freeze_tasks(bool sig_only) if (!todo || time_after(jiffies, end_time)) break; + if (!pm_check_wakeup_events()) { + wakeup = true; + break; + } + /* * We need to retry, but first give the freezing tasks some * time to enter the regrigerator. @@ -97,8 +103,9 @@ static int try_to_freeze_tasks(bool sig_only) * but it cleans up leftover PF_FREEZE requests. */ printk("\n"); - printk(KERN_ERR "Freezing of tasks failed after %d.%02d seconds " + printk(KERN_ERR "Freezing of tasks %s after %d.%02d seconds " "(%d tasks refusing to freeze, wq_busy=%d):\n", + wakeup ? "aborted" : "failed", elapsed_csecs / 100, elapsed_csecs % 100, todo - wq_busy, wq_busy); @@ -107,7 +114,7 @@ static int try_to_freeze_tasks(bool sig_only) read_lock(&tasklist_lock); do_each_thread(g, p) { task_lock(p); - if (freezing(p) && !freezer_should_skip(p)) + if (!wakeup && freezing(p) && !freezer_should_skip(p)) sched_show_task(p); cancel_freezing(p); task_unlock(p); diff --git a/kernel/power/snapshot.c b/kernel/power/snapshot.c index d3f795f01bbc..ac7eb109f196 100644 --- a/kernel/power/snapshot.c +++ b/kernel/power/snapshot.c @@ -46,7 +46,12 @@ static void swsusp_unset_page_forbidden(struct page *); * size will not exceed N bytes, but if that is impossible, it will * try to create the smallest image possible. */ -unsigned long image_size = 500 * 1024 * 1024; +unsigned long image_size; + +void __init hibernate_image_size_init(void) +{ + image_size = ((totalram_pages * 2) / 5) * PAGE_SIZE; +} /* List of PBEs needed for restoring the pages that were allocated before * the suspend and included in the suspend image, but have also been @@ -1318,12 +1323,14 @@ int hibernate_preallocate_memory(void) /* Compute the maximum number of saveable pages to leave in memory. */ max_size = (count - (size + PAGES_FOR_IO)) / 2 - 2 * SPARE_PAGES; + /* Compute the desired number of image pages specified by image_size. */ size = DIV_ROUND_UP(image_size, PAGE_SIZE); if (size > max_size) size = max_size; /* - * If the maximum is not less than the current number of saveable pages - * in memory, allocate page frames for the image and we're done. + * If the desired number of image pages is at least as large as the + * current number of saveable pages in memory, allocate page frames for + * the image and we're done. */ if (size >= saveable) { pages = preallocate_image_highmem(save_highmem); diff --git a/kernel/power/swap.c b/kernel/power/swap.c index e6a5bdf61a37..916eaa790399 100644 --- a/kernel/power/swap.c +++ b/kernel/power/swap.c @@ -24,10 +24,12 @@ #include <linux/swapops.h> #include <linux/pm.h> #include <linux/slab.h> +#include <linux/lzo.h> +#include <linux/vmalloc.h> #include "power.h" -#define SWSUSP_SIG "S1SUSPEND" +#define HIBERNATE_SIG "LINHIB0001" /* * The swap map is a data structure used for keeping track of each page @@ -193,7 +195,7 @@ static int mark_swapfiles(struct swap_map_handle *handle, unsigned int flags) if (!memcmp("SWAP-SPACE",swsusp_header->sig, 10) || !memcmp("SWAPSPACE2",swsusp_header->sig, 10)) { memcpy(swsusp_header->orig_sig,swsusp_header->sig, 10); - memcpy(swsusp_header->sig,SWSUSP_SIG, 10); + memcpy(swsusp_header->sig, HIBERNATE_SIG, 10); swsusp_header->image = handle->first_sector; swsusp_header->flags = flags; error = hib_bio_write_page(swsusp_resume_block, @@ -357,6 +359,18 @@ static int swap_writer_finish(struct swap_map_handle *handle, return error; } +/* We need to remember how much compressed data we need to read. */ +#define LZO_HEADER sizeof(size_t) + +/* Number of pages/bytes we'll compress at one time. */ +#define LZO_UNC_PAGES 32 +#define LZO_UNC_SIZE (LZO_UNC_PAGES * PAGE_SIZE) + +/* Number of pages/bytes we need for compressed data (worst case). */ +#define LZO_CMP_PAGES DIV_ROUND_UP(lzo1x_worst_compress(LZO_UNC_SIZE) + \ + LZO_HEADER, PAGE_SIZE) +#define LZO_CMP_SIZE (LZO_CMP_PAGES * PAGE_SIZE) + /** * save_image - save the suspend image data */ @@ -404,6 +418,137 @@ static int save_image(struct swap_map_handle *handle, return ret; } + +/** + * save_image_lzo - Save the suspend image data compressed with LZO. + * @handle: Swap mam handle to use for saving the image. + * @snapshot: Image to read data from. + * @nr_to_write: Number of pages to save. + */ +static int save_image_lzo(struct swap_map_handle *handle, + struct snapshot_handle *snapshot, + unsigned int nr_to_write) +{ + unsigned int m; + int ret = 0; + int nr_pages; + int err2; + struct bio *bio; + struct timeval start; + struct timeval stop; + size_t off, unc_len, cmp_len; + unsigned char *unc, *cmp, *wrk, *page; + + page = (void *)__get_free_page(__GFP_WAIT | __GFP_HIGH); + if (!page) { + printk(KERN_ERR "PM: Failed to allocate LZO page\n"); + return -ENOMEM; + } + + wrk = vmalloc(LZO1X_1_MEM_COMPRESS); + if (!wrk) { + printk(KERN_ERR "PM: Failed to allocate LZO workspace\n"); + free_page((unsigned long)page); + return -ENOMEM; + } + + unc = vmalloc(LZO_UNC_SIZE); + if (!unc) { + printk(KERN_ERR "PM: Failed to allocate LZO uncompressed\n"); + vfree(wrk); + free_page((unsigned long)page); + return -ENOMEM; + } + + cmp = vmalloc(LZO_CMP_SIZE); + if (!cmp) { + printk(KERN_ERR "PM: Failed to allocate LZO compressed\n"); + vfree(unc); + vfree(wrk); + free_page((unsigned long)page); + return -ENOMEM; + } + + printk(KERN_INFO + "PM: Compressing and saving image data (%u pages) ... ", + nr_to_write); + m = nr_to_write / 100; + if (!m) + m = 1; + nr_pages = 0; + bio = NULL; + do_gettimeofday(&start); + for (;;) { + for (off = 0; off < LZO_UNC_SIZE; off += PAGE_SIZE) { + ret = snapshot_read_next(snapshot); + if (ret < 0) + goto out_finish; + + if (!ret) + break; + + memcpy(unc + off, data_of(*snapshot), PAGE_SIZE); + + if (!(nr_pages % m)) + printk(KERN_CONT "\b\b\b\b%3d%%", nr_pages / m); + nr_pages++; + } + + if (!off) + break; + + unc_len = off; + ret = lzo1x_1_compress(unc, unc_len, + cmp + LZO_HEADER, &cmp_len, wrk); + if (ret < 0) { + printk(KERN_ERR "PM: LZO compression failed\n"); + break; + } + + if (unlikely(!cmp_len || + cmp_len > lzo1x_worst_compress(unc_len))) { + printk(KERN_ERR "PM: Invalid LZO compressed length\n"); + ret = -1; + break; + } + + *(size_t *)cmp = cmp_len; + + /* + * Given we are writing one page at a time to disk, we copy + * that much from the buffer, although the last bit will likely + * be smaller than full page. This is OK - we saved the length + * of the compressed data, so any garbage at the end will be + * discarded when we read it. + */ + for (off = 0; off < LZO_HEADER + cmp_len; off += PAGE_SIZE) { + memcpy(page, cmp + off, PAGE_SIZE); + + ret = swap_write_page(handle, page, &bio); + if (ret) + goto out_finish; + } + } + +out_finish: + err2 = hib_wait_on_bio_chain(&bio); + do_gettimeofday(&stop); + if (!ret) + ret = err2; + if (!ret) + printk(KERN_CONT "\b\b\b\bdone\n"); + else + printk(KERN_CONT "\n"); + swsusp_show_speed(&start, &stop, nr_to_write, "Wrote"); + + vfree(cmp); + vfree(unc); + vfree(wrk); + free_page((unsigned long)page); + + return ret; +} + /** * enough_swap - Make sure we have enough swap to save the image. * @@ -411,12 +556,16 @@ static int save_image(struct swap_map_handle *handle, * space avaiable from the resume partition. */ -static int enough_swap(unsigned int nr_pages) +static int enough_swap(unsigned int nr_pages, unsigned int flags) { unsigned int free_swap = count_swap_pages(root_swap, 1); + unsigned int required; pr_debug("PM: Free swap pages: %u\n", free_swap); - return free_swap > nr_pages + PAGES_FOR_IO; + + required = PAGES_FOR_IO + ((flags & SF_NOCOMPRESS_MODE) ? + nr_pages : (nr_pages * LZO_CMP_PAGES) / LZO_UNC_PAGES + 1); + return free_swap > required; } /** @@ -443,7 +592,7 @@ int swsusp_write(unsigned int flags) printk(KERN_ERR "PM: Cannot get swap writer\n"); return error; } - if (!enough_swap(pages)) { + if (!enough_swap(pages, flags)) { printk(KERN_ERR "PM: Not enough free swap\n"); error = -ENOSPC; goto out_finish; @@ -458,8 +607,11 @@ int swsusp_write(unsigned int flags) } header = (struct swsusp_info *)data_of(snapshot); error = swap_write_page(&handle, header, NULL); - if (!error) - error = save_image(&handle, &snapshot, pages - 1); + if (!error) { + error = (flags & SF_NOCOMPRESS_MODE) ? + save_image(&handle, &snapshot, pages - 1) : + save_image_lzo(&handle, &snapshot, pages - 1); + } out_finish: error = swap_writer_finish(&handle, flags, error); return error; @@ -590,6 +742,127 @@ static int load_image(struct swap_map_handle *handle, } /** + * load_image_lzo - Load compressed image data and decompress them with LZO. + * @handle: Swap map handle to use for loading data. + * @snapshot: Image to copy uncompressed data into. + * @nr_to_read: Number of pages to load. + */ +static int load_image_lzo(struct swap_map_handle *handle, + struct snapshot_handle *snapshot, + unsigned int nr_to_read) +{ + unsigned int m; + int error = 0; + struct timeval start; + struct timeval stop; + unsigned nr_pages; + size_t off, unc_len, cmp_len; + unsigned char *unc, *cmp, *page; + + page = (void *)__get_free_page(__GFP_WAIT | __GFP_HIGH); + if (!page) { + printk(KERN_ERR "PM: Failed to allocate LZO page\n"); + return -ENOMEM; + } + + unc = vmalloc(LZO_UNC_SIZE); + if (!unc) { + printk(KERN_ERR "PM: Failed to allocate LZO uncompressed\n"); + free_page((unsigned long)page); + return -ENOMEM; + } + + cmp = vmalloc(LZO_CMP_SIZE); + if (!cmp) { + printk(KERN_ERR "PM: Failed to allocate LZO compressed\n"); + vfree(unc); + free_page((unsigned long)page); + return -ENOMEM; + } + + printk(KERN_INFO + "PM: Loading and decompressing image data (%u pages) ... ", + nr_to_read); + m = nr_to_read / 100; + if (!m) + m = 1; + nr_pages = 0; + do_gettimeofday(&start); + + error = snapshot_write_next(snapshot); + if (error <= 0) + goto out_finish; + + for (;;) { + error = swap_read_page(handle, page, NULL); /* sync */ + if (error) + break; + + cmp_len = *(size_t *)page; + if (unlikely(!cmp_len || + cmp_len > lzo1x_worst_compress(LZO_UNC_SIZE))) { + printk(KERN_ERR "PM: Invalid LZO compressed length\n"); + error = -1; + break; + } + + memcpy(cmp, page, PAGE_SIZE); + for (off = PAGE_SIZE; off < LZO_HEADER + cmp_len; off += PAGE_SIZE) { + error = swap_read_page(handle, page, NULL); /* sync */ + if (error) + goto out_finish; + + memcpy(cmp + off, page, PAGE_SIZE); + } + + unc_len = LZO_UNC_SIZE; + error = lzo1x_decompress_safe(cmp + LZO_HEADER, cmp_len, + unc, &unc_len); + if (error < 0) { + printk(KERN_ERR "PM: LZO decompression failed\n"); + break; + } + + if (unlikely(!unc_len || + unc_len > LZO_UNC_SIZE || + unc_len & (PAGE_SIZE - 1))) { + printk(KERN_ERR "PM: Invalid LZO uncompressed length\n"); + error = -1; + break; + } + + for (off = 0; off < unc_len; off += PAGE_SIZE) { + memcpy(data_of(*snapshot), unc + off, PAGE_SIZE); + + if (!(nr_pages % m)) + printk("\b\b\b\b%3d%%", nr_pages / m); + nr_pages++; + + error = snapshot_write_next(snapshot); + if (error <= 0) + goto out_finish; + } + } + +out_finish: + do_gettimeofday(&stop); + if (!error) { + printk("\b\b\b\bdone\n"); + snapshot_write_finalize(snapshot); + if (!snapshot_image_loaded(snapshot)) + error = -ENODATA; + } else + printk("\n"); + swsusp_show_speed(&start, &stop, nr_to_read, "Read"); + + vfree(cmp); + vfree(unc); + free_page((unsigned long)page); + + return error; +} + +/** * swsusp_read - read the hibernation image. * @flags_p: flags passed by the "frozen" kernel in the image header should * be written into this memeory location @@ -612,8 +885,11 @@ int swsusp_read(unsigned int *flags_p) goto end; if (!error) error = swap_read_page(&handle, header, NULL); - if (!error) - error = load_image(&handle, &snapshot, header->pages - 1); + if (!error) { + error = (*flags_p & SF_NOCOMPRESS_MODE) ? + load_image(&handle, &snapshot, header->pages - 1) : + load_image_lzo(&handle, &snapshot, header->pages - 1); + } swap_reader_finish(&handle); end: if (!error) @@ -640,7 +916,7 @@ int swsusp_check(void) if (error) goto put; - if (!memcmp(SWSUSP_SIG, swsusp_header->sig, 10)) { + if (!memcmp(HIBERNATE_SIG, swsusp_header->sig, 10)) { memcpy(swsusp_header->sig, swsusp_header->orig_sig, 10); /* Reset swap signature now */ error = hib_bio_write_page(swsusp_resume_block, @@ -653,13 +929,13 @@ put: if (error) blkdev_put(hib_resume_bdev, FMODE_READ); else - pr_debug("PM: Signature found, resuming\n"); + pr_debug("PM: Image signature found, resuming\n"); } else { error = PTR_ERR(hib_resume_bdev); } if (error) - pr_debug("PM: Error %d checking image file\n", error); + pr_debug("PM: Image not found (code %d)\n", error); return error; } diff --git a/kernel/printk.c b/kernel/printk.c index 8fe465ac008a..2531017795f6 100644 --- a/kernel/printk.c +++ b/kernel/printk.c @@ -85,7 +85,7 @@ EXPORT_SYMBOL(oops_in_progress); * provides serialisation for access to the entire console * driver system. */ -static DECLARE_MUTEX(console_sem); +static DEFINE_SEMAPHORE(console_sem); struct console *console_drivers; EXPORT_SYMBOL_GPL(console_drivers); @@ -556,7 +556,7 @@ static void zap_locks(void) /* If a crash is occurring, make sure we can't deadlock */ spin_lock_init(&logbuf_lock); /* And make sure that we print immediately */ - init_MUTEX(&console_sem); + sema_init(&console_sem, 1); } #if defined(CONFIG_PRINTK_TIME) diff --git a/kernel/rcupdate.c b/kernel/rcupdate.c index 4d169835fb36..a23a57a976d1 100644 --- a/kernel/rcupdate.c +++ b/kernel/rcupdate.c @@ -73,12 +73,14 @@ int debug_lockdep_rcu_enabled(void) EXPORT_SYMBOL_GPL(debug_lockdep_rcu_enabled); /** - * rcu_read_lock_bh_held - might we be in RCU-bh read-side critical section? + * rcu_read_lock_bh_held() - might we be in RCU-bh read-side critical section? * * Check for bottom half being disabled, which covers both the * CONFIG_PROVE_RCU and not cases. Note that if someone uses * rcu_read_lock_bh(), but then later enables BH, lockdep (if enabled) - * will show the situation. + * will show the situation. This is useful for debug checks in functions + * that require that they be called within an RCU read-side critical + * section. * * Check debug_lockdep_rcu_enabled() to prevent false positives during boot. */ @@ -86,7 +88,7 @@ int rcu_read_lock_bh_held(void) { if (!debug_lockdep_rcu_enabled()) return 1; - return in_softirq(); + return in_softirq() || irqs_disabled(); } EXPORT_SYMBOL_GPL(rcu_read_lock_bh_held); diff --git a/kernel/rcutiny.c b/kernel/rcutiny.c index 196ec02f8be0..d806735342ac 100644 --- a/kernel/rcutiny.c +++ b/kernel/rcutiny.c @@ -59,6 +59,14 @@ int rcu_scheduler_active __read_mostly; EXPORT_SYMBOL_GPL(rcu_scheduler_active); #endif /* #ifdef CONFIG_DEBUG_LOCK_ALLOC */ +/* Forward declarations for rcutiny_plugin.h. */ +static void __rcu_process_callbacks(struct rcu_ctrlblk *rcp); +static void __call_rcu(struct rcu_head *head, + void (*func)(struct rcu_head *rcu), + struct rcu_ctrlblk *rcp); + +#include "rcutiny_plugin.h" + #ifdef CONFIG_NO_HZ static long rcu_dynticks_nesting = 1; @@ -140,6 +148,7 @@ void rcu_check_callbacks(int cpu, int user) rcu_sched_qs(cpu); else if (!in_softirq()) rcu_bh_qs(cpu); + rcu_preempt_check_callbacks(); } /* @@ -162,6 +171,7 @@ static void __rcu_process_callbacks(struct rcu_ctrlblk *rcp) *rcp->donetail = NULL; if (rcp->curtail == rcp->donetail) rcp->curtail = &rcp->rcucblist; + rcu_preempt_remove_callbacks(rcp); rcp->donetail = &rcp->rcucblist; local_irq_restore(flags); @@ -182,6 +192,7 @@ static void rcu_process_callbacks(struct softirq_action *unused) { __rcu_process_callbacks(&rcu_sched_ctrlblk); __rcu_process_callbacks(&rcu_bh_ctrlblk); + rcu_preempt_process_callbacks(); } /* @@ -223,15 +234,15 @@ static void __call_rcu(struct rcu_head *head, } /* - * Post an RCU callback to be invoked after the end of an RCU grace + * Post an RCU callback to be invoked after the end of an RCU-sched grace * period. But since we have but one CPU, that would be after any * quiescent state. */ -void call_rcu(struct rcu_head *head, void (*func)(struct rcu_head *rcu)) +void call_rcu_sched(struct rcu_head *head, void (*func)(struct rcu_head *rcu)) { __call_rcu(head, func, &rcu_sched_ctrlblk); } -EXPORT_SYMBOL_GPL(call_rcu); +EXPORT_SYMBOL_GPL(call_rcu_sched); /* * Post an RCU bottom-half callback to be invoked after any subsequent @@ -243,20 +254,6 @@ void call_rcu_bh(struct rcu_head *head, void (*func)(struct rcu_head *rcu)) } EXPORT_SYMBOL_GPL(call_rcu_bh); -void rcu_barrier(void) -{ - struct rcu_synchronize rcu; - - init_rcu_head_on_stack(&rcu.head); - init_completion(&rcu.completion); - /* Will wake me after RCU finished. */ - call_rcu(&rcu.head, wakeme_after_rcu); - /* Wait for it. */ - wait_for_completion(&rcu.completion); - destroy_rcu_head_on_stack(&rcu.head); -} -EXPORT_SYMBOL_GPL(rcu_barrier); - void rcu_barrier_bh(void) { struct rcu_synchronize rcu; @@ -289,5 +286,3 @@ void __init rcu_init(void) { open_softirq(RCU_SOFTIRQ, rcu_process_callbacks); } - -#include "rcutiny_plugin.h" diff --git a/kernel/rcutiny_plugin.h b/kernel/rcutiny_plugin.h index d223a92bc742..6ceca4f745ff 100644 --- a/kernel/rcutiny_plugin.h +++ b/kernel/rcutiny_plugin.h @@ -1,7 +1,7 @@ /* - * Read-Copy Update mechanism for mutual exclusion (tree-based version) + * Read-Copy Update mechanism for mutual exclusion, the Bloatwatch edition * Internal non-public definitions that provide either classic - * or preemptable semantics. + * or preemptible semantics. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by @@ -17,11 +17,587 @@ * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. * - * Copyright IBM Corporation, 2009 + * Copyright (c) 2010 Linaro * * Author: Paul E. McKenney <paulmck@linux.vnet.ibm.com> */ +#ifdef CONFIG_TINY_PREEMPT_RCU + +#include <linux/delay.h> + +/* Global control variables for preemptible RCU. */ +struct rcu_preempt_ctrlblk { + struct rcu_ctrlblk rcb; /* curtail: ->next ptr of last CB for GP. */ + struct rcu_head **nexttail; + /* Tasks blocked in a preemptible RCU */ + /* read-side critical section while an */ + /* preemptible-RCU grace period is in */ + /* progress must wait for a later grace */ + /* period. This pointer points to the */ + /* ->next pointer of the last task that */ + /* must wait for a later grace period, or */ + /* to &->rcb.rcucblist if there is no */ + /* such task. */ + struct list_head blkd_tasks; + /* Tasks blocked in RCU read-side critical */ + /* section. Tasks are placed at the head */ + /* of this list and age towards the tail. */ + struct list_head *gp_tasks; + /* Pointer to the first task blocking the */ + /* current grace period, or NULL if there */ + /* is not such task. */ + struct list_head *exp_tasks; + /* Pointer to first task blocking the */ + /* current expedited grace period, or NULL */ + /* if there is no such task. If there */ + /* is no current expedited grace period, */ + /* then there cannot be any such task. */ + u8 gpnum; /* Current grace period. */ + u8 gpcpu; /* Last grace period blocked by the CPU. */ + u8 completed; /* Last grace period completed. */ + /* If all three are equal, RCU is idle. */ +}; + +static struct rcu_preempt_ctrlblk rcu_preempt_ctrlblk = { + .rcb.donetail = &rcu_preempt_ctrlblk.rcb.rcucblist, + .rcb.curtail = &rcu_preempt_ctrlblk.rcb.rcucblist, + .nexttail = &rcu_preempt_ctrlblk.rcb.rcucblist, + .blkd_tasks = LIST_HEAD_INIT(rcu_preempt_ctrlblk.blkd_tasks), +}; + +static int rcu_preempted_readers_exp(void); +static void rcu_report_exp_done(void); + +/* + * Return true if the CPU has not yet responded to the current grace period. + */ +static int rcu_cpu_blocking_cur_gp(void) +{ + return rcu_preempt_ctrlblk.gpcpu != rcu_preempt_ctrlblk.gpnum; +} + +/* + * Check for a running RCU reader. Because there is only one CPU, + * there can be but one running RCU reader at a time. ;-) + */ +static int rcu_preempt_running_reader(void) +{ + return current->rcu_read_lock_nesting; +} + +/* + * Check for preempted RCU readers blocking any grace period. + * If the caller needs a reliable answer, it must disable hard irqs. + */ +static int rcu_preempt_blocked_readers_any(void) +{ + return !list_empty(&rcu_preempt_ctrlblk.blkd_tasks); +} + +/* + * Check for preempted RCU readers blocking the current grace period. + * If the caller needs a reliable answer, it must disable hard irqs. + */ +static int rcu_preempt_blocked_readers_cgp(void) +{ + return rcu_preempt_ctrlblk.gp_tasks != NULL; +} + +/* + * Return true if another preemptible-RCU grace period is needed. + */ +static int rcu_preempt_needs_another_gp(void) +{ + return *rcu_preempt_ctrlblk.rcb.curtail != NULL; +} + +/* + * Return true if a preemptible-RCU grace period is in progress. + * The caller must disable hardirqs. + */ +static int rcu_preempt_gp_in_progress(void) +{ + return rcu_preempt_ctrlblk.completed != rcu_preempt_ctrlblk.gpnum; +} + +/* + * Record a preemptible-RCU quiescent state for the specified CPU. Note + * that this just means that the task currently running on the CPU is + * in a quiescent state. There might be any number of tasks blocked + * while in an RCU read-side critical section. + * + * Unlike the other rcu_*_qs() functions, callers to this function + * must disable irqs in order to protect the assignment to + * ->rcu_read_unlock_special. + * + * Because this is a single-CPU implementation, the only way a grace + * period can end is if the CPU is in a quiescent state. The reason is + * that a blocked preemptible-RCU reader can exit its critical section + * only if the CPU is running it at the time. Therefore, when the + * last task blocking the current grace period exits its RCU read-side + * critical section, neither the CPU nor blocked tasks will be stopping + * the current grace period. (In contrast, SMP implementations + * might have CPUs running in RCU read-side critical sections that + * block later grace periods -- but this is not possible given only + * one CPU.) + */ +static void rcu_preempt_cpu_qs(void) +{ + /* Record both CPU and task as having responded to current GP. */ + rcu_preempt_ctrlblk.gpcpu = rcu_preempt_ctrlblk.gpnum; + current->rcu_read_unlock_special &= ~RCU_READ_UNLOCK_NEED_QS; + + /* + * If there is no GP, or if blocked readers are still blocking GP, + * then there is nothing more to do. + */ + if (!rcu_preempt_gp_in_progress() || rcu_preempt_blocked_readers_cgp()) + return; + + /* Advance callbacks. */ + rcu_preempt_ctrlblk.completed = rcu_preempt_ctrlblk.gpnum; + rcu_preempt_ctrlblk.rcb.donetail = rcu_preempt_ctrlblk.rcb.curtail; + rcu_preempt_ctrlblk.rcb.curtail = rcu_preempt_ctrlblk.nexttail; + + /* If there are no blocked readers, next GP is done instantly. */ + if (!rcu_preempt_blocked_readers_any()) + rcu_preempt_ctrlblk.rcb.donetail = rcu_preempt_ctrlblk.nexttail; + + /* If there are done callbacks, make RCU_SOFTIRQ process them. */ + if (*rcu_preempt_ctrlblk.rcb.donetail != NULL) + raise_softirq(RCU_SOFTIRQ); +} + +/* + * Start a new RCU grace period if warranted. Hard irqs must be disabled. + */ +static void rcu_preempt_start_gp(void) +{ + if (!rcu_preempt_gp_in_progress() && rcu_preempt_needs_another_gp()) { + + /* Official start of GP. */ + rcu_preempt_ctrlblk.gpnum++; + + /* Any blocked RCU readers block new GP. */ + if (rcu_preempt_blocked_readers_any()) + rcu_preempt_ctrlblk.gp_tasks = + rcu_preempt_ctrlblk.blkd_tasks.next; + + /* If there is no running reader, CPU is done with GP. */ + if (!rcu_preempt_running_reader()) + rcu_preempt_cpu_qs(); + } +} + +/* + * We have entered the scheduler, and the current task might soon be + * context-switched away from. If this task is in an RCU read-side + * critical section, we will no longer be able to rely on the CPU to + * record that fact, so we enqueue the task on the blkd_tasks list. + * If the task started after the current grace period began, as recorded + * by ->gpcpu, we enqueue at the beginning of the list. Otherwise + * before the element referenced by ->gp_tasks (or at the tail if + * ->gp_tasks is NULL) and point ->gp_tasks at the newly added element. + * The task will dequeue itself when it exits the outermost enclosing + * RCU read-side critical section. Therefore, the current grace period + * cannot be permitted to complete until the ->gp_tasks pointer becomes + * NULL. + * + * Caller must disable preemption. + */ +void rcu_preempt_note_context_switch(void) +{ + struct task_struct *t = current; + unsigned long flags; + + local_irq_save(flags); /* must exclude scheduler_tick(). */ + if (rcu_preempt_running_reader() && + (t->rcu_read_unlock_special & RCU_READ_UNLOCK_BLOCKED) == 0) { + + /* Possibly blocking in an RCU read-side critical section. */ + t->rcu_read_unlock_special |= RCU_READ_UNLOCK_BLOCKED; + + /* + * If this CPU has already checked in, then this task + * will hold up the next grace period rather than the + * current grace period. Queue the task accordingly. + * If the task is queued for the current grace period + * (i.e., this CPU has not yet passed through a quiescent + * state for the current grace period), then as long + * as that task remains queued, the current grace period + * cannot end. + */ + list_add(&t->rcu_node_entry, &rcu_preempt_ctrlblk.blkd_tasks); + if (rcu_cpu_blocking_cur_gp()) + rcu_preempt_ctrlblk.gp_tasks = &t->rcu_node_entry; + } + + /* + * Either we were not in an RCU read-side critical section to + * begin with, or we have now recorded that critical section + * globally. Either way, we can now note a quiescent state + * for this CPU. Again, if we were in an RCU read-side critical + * section, and if that critical section was blocking the current + * grace period, then the fact that the task has been enqueued + * means that current grace period continues to be blocked. + */ + rcu_preempt_cpu_qs(); + local_irq_restore(flags); +} + +/* + * Tiny-preemptible RCU implementation for rcu_read_lock(). + * Just increment ->rcu_read_lock_nesting, shared state will be updated + * if we block. + */ +void __rcu_read_lock(void) +{ + current->rcu_read_lock_nesting++; + barrier(); /* needed if we ever invoke rcu_read_lock in rcutiny.c */ +} +EXPORT_SYMBOL_GPL(__rcu_read_lock); + +/* + * Handle special cases during rcu_read_unlock(), such as needing to + * notify RCU core processing or task having blocked during the RCU + * read-side critical section. + */ +static void rcu_read_unlock_special(struct task_struct *t) +{ + int empty; + int empty_exp; + unsigned long flags; + struct list_head *np; + int special; + + /* + * NMI handlers cannot block and cannot safely manipulate state. + * They therefore cannot possibly be special, so just leave. + */ + if (in_nmi()) + return; + + local_irq_save(flags); + + /* + * If RCU core is waiting for this CPU to exit critical section, + * let it know that we have done so. + */ + special = t->rcu_read_unlock_special; + if (special & RCU_READ_UNLOCK_NEED_QS) + rcu_preempt_cpu_qs(); + + /* Hardware IRQ handlers cannot block. */ + if (in_irq()) { + local_irq_restore(flags); + return; + } + + /* Clean up if blocked during RCU read-side critical section. */ + if (special & RCU_READ_UNLOCK_BLOCKED) { + t->rcu_read_unlock_special &= ~RCU_READ_UNLOCK_BLOCKED; + + /* + * Remove this task from the ->blkd_tasks list and adjust + * any pointers that might have been referencing it. + */ + empty = !rcu_preempt_blocked_readers_cgp(); + empty_exp = rcu_preempt_ctrlblk.exp_tasks == NULL; + np = t->rcu_node_entry.next; + if (np == &rcu_preempt_ctrlblk.blkd_tasks) + np = NULL; + list_del(&t->rcu_node_entry); + if (&t->rcu_node_entry == rcu_preempt_ctrlblk.gp_tasks) + rcu_preempt_ctrlblk.gp_tasks = np; + if (&t->rcu_node_entry == rcu_preempt_ctrlblk.exp_tasks) + rcu_preempt_ctrlblk.exp_tasks = np; + INIT_LIST_HEAD(&t->rcu_node_entry); + + /* + * If this was the last task on the current list, and if + * we aren't waiting on the CPU, report the quiescent state + * and start a new grace period if needed. + */ + if (!empty && !rcu_preempt_blocked_readers_cgp()) { + rcu_preempt_cpu_qs(); + rcu_preempt_start_gp(); + } + + /* + * If this was the last task on the expedited lists, + * then we need wake up the waiting task. + */ + if (!empty_exp && rcu_preempt_ctrlblk.exp_tasks == NULL) + rcu_report_exp_done(); + } + local_irq_restore(flags); +} + +/* + * Tiny-preemptible RCU implementation for rcu_read_unlock(). + * Decrement ->rcu_read_lock_nesting. If the result is zero (outermost + * rcu_read_unlock()) and ->rcu_read_unlock_special is non-zero, then + * invoke rcu_read_unlock_special() to clean up after a context switch + * in an RCU read-side critical section and other special cases. + */ +void __rcu_read_unlock(void) +{ + struct task_struct *t = current; + + barrier(); /* needed if we ever invoke rcu_read_unlock in rcutiny.c */ + --t->rcu_read_lock_nesting; + barrier(); /* decrement before load of ->rcu_read_unlock_special */ + if (t->rcu_read_lock_nesting == 0 && + unlikely(ACCESS_ONCE(t->rcu_read_unlock_special))) + rcu_read_unlock_special(t); +#ifdef CONFIG_PROVE_LOCKING + WARN_ON_ONCE(t->rcu_read_lock_nesting < 0); +#endif /* #ifdef CONFIG_PROVE_LOCKING */ +} +EXPORT_SYMBOL_GPL(__rcu_read_unlock); + +/* + * Check for a quiescent state from the current CPU. When a task blocks, + * the task is recorded in the rcu_preempt_ctrlblk structure, which is + * checked elsewhere. This is called from the scheduling-clock interrupt. + * + * Caller must disable hard irqs. + */ +static void rcu_preempt_check_callbacks(void) +{ + struct task_struct *t = current; + + if (rcu_preempt_gp_in_progress() && + (!rcu_preempt_running_reader() || + !rcu_cpu_blocking_cur_gp())) + rcu_preempt_cpu_qs(); + if (&rcu_preempt_ctrlblk.rcb.rcucblist != + rcu_preempt_ctrlblk.rcb.donetail) + raise_softirq(RCU_SOFTIRQ); + if (rcu_preempt_gp_in_progress() && + rcu_cpu_blocking_cur_gp() && + rcu_preempt_running_reader()) + t->rcu_read_unlock_special |= RCU_READ_UNLOCK_NEED_QS; +} + +/* + * TINY_PREEMPT_RCU has an extra callback-list tail pointer to + * update, so this is invoked from __rcu_process_callbacks() to + * handle that case. Of course, it is invoked for all flavors of + * RCU, but RCU callbacks can appear only on one of the lists, and + * neither ->nexttail nor ->donetail can possibly be NULL, so there + * is no need for an explicit check. + */ +static void rcu_preempt_remove_callbacks(struct rcu_ctrlblk *rcp) +{ + if (rcu_preempt_ctrlblk.nexttail == rcp->donetail) + rcu_preempt_ctrlblk.nexttail = &rcp->rcucblist; +} + +/* + * Process callbacks for preemptible RCU. + */ +static void rcu_preempt_process_callbacks(void) +{ + __rcu_process_callbacks(&rcu_preempt_ctrlblk.rcb); +} + +/* + * Queue a preemptible -RCU callback for invocation after a grace period. + */ +void call_rcu(struct rcu_head *head, void (*func)(struct rcu_head *rcu)) +{ + unsigned long flags; + + debug_rcu_head_queue(head); + head->func = func; + head->next = NULL; + + local_irq_save(flags); + *rcu_preempt_ctrlblk.nexttail = head; + rcu_preempt_ctrlblk.nexttail = &head->next; + rcu_preempt_start_gp(); /* checks to see if GP needed. */ + local_irq_restore(flags); +} +EXPORT_SYMBOL_GPL(call_rcu); + +void rcu_barrier(void) +{ + struct rcu_synchronize rcu; + + init_rcu_head_on_stack(&rcu.head); + init_completion(&rcu.completion); + /* Will wake me after RCU finished. */ + call_rcu(&rcu.head, wakeme_after_rcu); + /* Wait for it. */ + wait_for_completion(&rcu.completion); + destroy_rcu_head_on_stack(&rcu.head); +} +EXPORT_SYMBOL_GPL(rcu_barrier); + +/* + * synchronize_rcu - wait until a grace period has elapsed. + * + * Control will return to the caller some time after a full grace + * period has elapsed, in other words after all currently executing RCU + * read-side critical sections have completed. RCU read-side critical + * sections are delimited by rcu_read_lock() and rcu_read_unlock(), + * and may be nested. + */ +void synchronize_rcu(void) +{ +#ifdef CONFIG_DEBUG_LOCK_ALLOC + if (!rcu_scheduler_active) + return; +#endif /* #ifdef CONFIG_DEBUG_LOCK_ALLOC */ + + WARN_ON_ONCE(rcu_preempt_running_reader()); + if (!rcu_preempt_blocked_readers_any()) + return; + + /* Once we get past the fastpath checks, same code as rcu_barrier(). */ + rcu_barrier(); +} +EXPORT_SYMBOL_GPL(synchronize_rcu); + +static DECLARE_WAIT_QUEUE_HEAD(sync_rcu_preempt_exp_wq); +static unsigned long sync_rcu_preempt_exp_count; +static DEFINE_MUTEX(sync_rcu_preempt_exp_mutex); + +/* + * Return non-zero if there are any tasks in RCU read-side critical + * sections blocking the current preemptible-RCU expedited grace period. + * If there is no preemptible-RCU expedited grace period currently in + * progress, returns zero unconditionally. + */ +static int rcu_preempted_readers_exp(void) +{ + return rcu_preempt_ctrlblk.exp_tasks != NULL; +} + +/* + * Report the exit from RCU read-side critical section for the last task + * that queued itself during or before the current expedited preemptible-RCU + * grace period. + */ +static void rcu_report_exp_done(void) +{ + wake_up(&sync_rcu_preempt_exp_wq); +} + +/* + * Wait for an rcu-preempt grace period, but expedite it. The basic idea + * is to rely in the fact that there is but one CPU, and that it is + * illegal for a task to invoke synchronize_rcu_expedited() while in a + * preemptible-RCU read-side critical section. Therefore, any such + * critical sections must correspond to blocked tasks, which must therefore + * be on the ->blkd_tasks list. So just record the current head of the + * list in the ->exp_tasks pointer, and wait for all tasks including and + * after the task pointed to by ->exp_tasks to drain. + */ +void synchronize_rcu_expedited(void) +{ + unsigned long flags; + struct rcu_preempt_ctrlblk *rpcp = &rcu_preempt_ctrlblk; + unsigned long snap; + + barrier(); /* ensure prior action seen before grace period. */ + + WARN_ON_ONCE(rcu_preempt_running_reader()); + + /* + * Acquire lock so that there is only one preemptible RCU grace + * period in flight. Of course, if someone does the expedited + * grace period for us while we are acquiring the lock, just leave. + */ + snap = sync_rcu_preempt_exp_count + 1; + mutex_lock(&sync_rcu_preempt_exp_mutex); + if (ULONG_CMP_LT(snap, sync_rcu_preempt_exp_count)) + goto unlock_mb_ret; /* Others did our work for us. */ + + local_irq_save(flags); + + /* + * All RCU readers have to already be on blkd_tasks because + * we cannot legally be executing in an RCU read-side critical + * section. + */ + + /* Snapshot current head of ->blkd_tasks list. */ + rpcp->exp_tasks = rpcp->blkd_tasks.next; + if (rpcp->exp_tasks == &rpcp->blkd_tasks) + rpcp->exp_tasks = NULL; + local_irq_restore(flags); + + /* Wait for tail of ->blkd_tasks list to drain. */ + if (rcu_preempted_readers_exp()) + wait_event(sync_rcu_preempt_exp_wq, + !rcu_preempted_readers_exp()); + + /* Clean up and exit. */ + barrier(); /* ensure expedited GP seen before counter increment. */ + sync_rcu_preempt_exp_count++; +unlock_mb_ret: + mutex_unlock(&sync_rcu_preempt_exp_mutex); + barrier(); /* ensure subsequent action seen after grace period. */ +} +EXPORT_SYMBOL_GPL(synchronize_rcu_expedited); + +/* + * Does preemptible RCU need the CPU to stay out of dynticks mode? + */ +int rcu_preempt_needs_cpu(void) +{ + if (!rcu_preempt_running_reader()) + rcu_preempt_cpu_qs(); + return rcu_preempt_ctrlblk.rcb.rcucblist != NULL; +} + +/* + * Check for a task exiting while in a preemptible -RCU read-side + * critical section, clean up if so. No need to issue warnings, + * as debug_check_no_locks_held() already does this if lockdep + * is enabled. + */ +void exit_rcu(void) +{ + struct task_struct *t = current; + + if (t->rcu_read_lock_nesting == 0) + return; + t->rcu_read_lock_nesting = 1; + rcu_read_unlock(); +} + +#else /* #ifdef CONFIG_TINY_PREEMPT_RCU */ + +/* + * Because preemptible RCU does not exist, it never has any callbacks + * to check. + */ +static void rcu_preempt_check_callbacks(void) +{ +} + +/* + * Because preemptible RCU does not exist, it never has any callbacks + * to remove. + */ +static void rcu_preempt_remove_callbacks(struct rcu_ctrlblk *rcp) +{ +} + +/* + * Because preemptible RCU does not exist, it never has any callbacks + * to process. + */ +static void rcu_preempt_process_callbacks(void) +{ +} + +#endif /* #else #ifdef CONFIG_TINY_PREEMPT_RCU */ + #ifdef CONFIG_DEBUG_LOCK_ALLOC #include <linux/kernel_stat.h> diff --git a/kernel/rcutorture.c b/kernel/rcutorture.c index 2e2726d790b9..9d8e8fb2515f 100644 --- a/kernel/rcutorture.c +++ b/kernel/rcutorture.c @@ -120,7 +120,7 @@ struct rcu_torture { }; static LIST_HEAD(rcu_torture_freelist); -static struct rcu_torture *rcu_torture_current; +static struct rcu_torture __rcu *rcu_torture_current; static long rcu_torture_current_version; static struct rcu_torture rcu_tortures[10 * RCU_TORTURE_PIPE_LEN]; static DEFINE_SPINLOCK(rcu_torture_lock); @@ -153,8 +153,10 @@ int rcutorture_runnable = RCUTORTURE_RUNNABLE_INIT; #define FULLSTOP_SHUTDOWN 1 /* System shutdown with rcutorture running. */ #define FULLSTOP_RMMOD 2 /* Normal rmmod of rcutorture. */ static int fullstop = FULLSTOP_RMMOD; -DEFINE_MUTEX(fullstop_mutex); /* Protect fullstop transitions and spawning */ - /* of kthreads. */ +/* + * Protect fullstop transitions and spawning of kthreads. + */ +static DEFINE_MUTEX(fullstop_mutex); /* * Detect and respond to a system shutdown. @@ -303,6 +305,10 @@ static void rcu_read_delay(struct rcu_random_state *rrsp) mdelay(longdelay_ms); if (!(rcu_random(rrsp) % (nrealreaders * 2 * shortdelay_us))) udelay(shortdelay_us); +#ifdef CONFIG_PREEMPT + if (!preempt_count() && !(rcu_random(rrsp) % (nrealreaders * 20000))) + preempt_schedule(); /* No QS if preempt_disable() in effect */ +#endif } static void rcu_torture_read_unlock(int idx) __releases(RCU) @@ -536,6 +542,8 @@ static void srcu_read_delay(struct rcu_random_state *rrsp) delay = rcu_random(rrsp) % (nrealreaders * 2 * longdelay * uspertick); if (!delay) schedule_timeout_interruptible(longdelay); + else + rcu_read_delay(rrsp); } static void srcu_torture_read_unlock(int idx) __releases(&srcu_ctl) @@ -731,7 +739,8 @@ rcu_torture_writer(void *arg) continue; rp->rtort_pipe_count = 0; udelay(rcu_random(&rand) & 0x3ff); - old_rp = rcu_torture_current; + old_rp = rcu_dereference_check(rcu_torture_current, + current == writer_task); rp->rtort_mbtest = 1; rcu_assign_pointer(rcu_torture_current, rp); smp_wmb(); /* Mods to old_rp must follow rcu_assign_pointer() */ diff --git a/kernel/rcutree.c b/kernel/rcutree.c index d5bc43976c5a..ccdc04c47981 100644 --- a/kernel/rcutree.c +++ b/kernel/rcutree.c @@ -143,6 +143,11 @@ module_param(blimit, int, 0); module_param(qhimark, int, 0); module_param(qlowmark, int, 0); +#ifdef CONFIG_RCU_CPU_STALL_DETECTOR +int rcu_cpu_stall_suppress __read_mostly = RCU_CPU_STALL_SUPPRESS_INIT; +module_param(rcu_cpu_stall_suppress, int, 0644); +#endif /* #ifdef CONFIG_RCU_CPU_STALL_DETECTOR */ + static void force_quiescent_state(struct rcu_state *rsp, int relaxed); static int rcu_pending(int cpu); @@ -450,7 +455,7 @@ static int rcu_implicit_dynticks_qs(struct rcu_data *rdp) #ifdef CONFIG_RCU_CPU_STALL_DETECTOR -int rcu_cpu_stall_panicking __read_mostly; +int rcu_cpu_stall_suppress __read_mostly; static void record_gp_stall_check_time(struct rcu_state *rsp) { @@ -482,8 +487,11 @@ static void print_other_cpu_stall(struct rcu_state *rsp) rcu_print_task_stall(rnp); raw_spin_unlock_irqrestore(&rnp->lock, flags); - /* OK, time to rat on our buddy... */ - + /* + * OK, time to rat on our buddy... + * See Documentation/RCU/stallwarn.txt for info on how to debug + * RCU CPU stall warnings. + */ printk(KERN_ERR "INFO: %s detected stalls on CPUs/tasks: {", rsp->name); rcu_for_each_leaf_node(rsp, rnp) { @@ -512,6 +520,11 @@ static void print_cpu_stall(struct rcu_state *rsp) unsigned long flags; struct rcu_node *rnp = rcu_get_root(rsp); + /* + * OK, time to rat on ourselves... + * See Documentation/RCU/stallwarn.txt for info on how to debug + * RCU CPU stall warnings. + */ printk(KERN_ERR "INFO: %s detected stall on CPU %d (t=%lu jiffies)\n", rsp->name, smp_processor_id(), jiffies - rsp->gp_start); trigger_all_cpu_backtrace(); @@ -530,11 +543,11 @@ static void check_cpu_stall(struct rcu_state *rsp, struct rcu_data *rdp) long delta; struct rcu_node *rnp; - if (rcu_cpu_stall_panicking) + if (rcu_cpu_stall_suppress) return; - delta = jiffies - rsp->jiffies_stall; + delta = jiffies - ACCESS_ONCE(rsp->jiffies_stall); rnp = rdp->mynode; - if ((rnp->qsmask & rdp->grpmask) && delta >= 0) { + if ((ACCESS_ONCE(rnp->qsmask) & rdp->grpmask) && delta >= 0) { /* We haven't checked in, so go dump stack. */ print_cpu_stall(rsp); @@ -548,10 +561,26 @@ static void check_cpu_stall(struct rcu_state *rsp, struct rcu_data *rdp) static int rcu_panic(struct notifier_block *this, unsigned long ev, void *ptr) { - rcu_cpu_stall_panicking = 1; + rcu_cpu_stall_suppress = 1; return NOTIFY_DONE; } +/** + * rcu_cpu_stall_reset - prevent further stall warnings in current grace period + * + * Set the stall-warning timeout way off into the future, thus preventing + * any RCU CPU stall-warning messages from appearing in the current set of + * RCU grace periods. + * + * The caller must disable hard irqs. + */ +void rcu_cpu_stall_reset(void) +{ + rcu_sched_state.jiffies_stall = jiffies + ULONG_MAX / 2; + rcu_bh_state.jiffies_stall = jiffies + ULONG_MAX / 2; + rcu_preempt_stall_reset(); +} + static struct notifier_block rcu_panic_block = { .notifier_call = rcu_panic, }; @@ -571,6 +600,10 @@ static void check_cpu_stall(struct rcu_state *rsp, struct rcu_data *rdp) { } +void rcu_cpu_stall_reset(void) +{ +} + static void __init check_cpu_stall_init(void) { } @@ -712,7 +745,7 @@ static void rcu_start_gp(struct rcu_state *rsp, unsigned long flags) __releases(rcu_get_root(rsp)->lock) { - struct rcu_data *rdp = rsp->rda[smp_processor_id()]; + struct rcu_data *rdp = this_cpu_ptr(rsp->rda); struct rcu_node *rnp = rcu_get_root(rsp); if (!cpu_needs_another_gp(rsp, rdp) || rsp->fqs_active) { @@ -960,7 +993,7 @@ rcu_check_quiescent_state(struct rcu_state *rsp, struct rcu_data *rdp) static void rcu_send_cbs_to_orphanage(struct rcu_state *rsp) { int i; - struct rcu_data *rdp = rsp->rda[smp_processor_id()]; + struct rcu_data *rdp = this_cpu_ptr(rsp->rda); if (rdp->nxtlist == NULL) return; /* irqs disabled, so comparison is stable. */ @@ -971,6 +1004,7 @@ static void rcu_send_cbs_to_orphanage(struct rcu_state *rsp) for (i = 0; i < RCU_NEXT_SIZE; i++) rdp->nxttail[i] = &rdp->nxtlist; rsp->orphan_qlen += rdp->qlen; + rdp->n_cbs_orphaned += rdp->qlen; rdp->qlen = 0; raw_spin_unlock(&rsp->onofflock); /* irqs remain disabled. */ } @@ -984,7 +1018,7 @@ static void rcu_adopt_orphan_cbs(struct rcu_state *rsp) struct rcu_data *rdp; raw_spin_lock_irqsave(&rsp->onofflock, flags); - rdp = rsp->rda[smp_processor_id()]; + rdp = this_cpu_ptr(rsp->rda); if (rsp->orphan_cbs_list == NULL) { raw_spin_unlock_irqrestore(&rsp->onofflock, flags); return; @@ -992,6 +1026,7 @@ static void rcu_adopt_orphan_cbs(struct rcu_state *rsp) *rdp->nxttail[RCU_NEXT_TAIL] = rsp->orphan_cbs_list; rdp->nxttail[RCU_NEXT_TAIL] = rsp->orphan_cbs_tail; rdp->qlen += rsp->orphan_qlen; + rdp->n_cbs_adopted += rsp->orphan_qlen; rsp->orphan_cbs_list = NULL; rsp->orphan_cbs_tail = &rsp->orphan_cbs_list; rsp->orphan_qlen = 0; @@ -1007,7 +1042,7 @@ static void __rcu_offline_cpu(int cpu, struct rcu_state *rsp) unsigned long flags; unsigned long mask; int need_report = 0; - struct rcu_data *rdp = rsp->rda[cpu]; + struct rcu_data *rdp = per_cpu_ptr(rsp->rda, cpu); struct rcu_node *rnp; /* Exclude any attempts to start a new grace period. */ @@ -1123,6 +1158,7 @@ static void rcu_do_batch(struct rcu_state *rsp, struct rcu_data *rdp) /* Update count, and requeue any remaining callbacks. */ rdp->qlen -= count; + rdp->n_cbs_invoked += count; if (list != NULL) { *tail = rdp->nxtlist; rdp->nxtlist = list; @@ -1226,7 +1262,8 @@ static void force_qs_rnp(struct rcu_state *rsp, int (*f)(struct rcu_data *)) cpu = rnp->grplo; bit = 1; for (; cpu <= rnp->grphi; cpu++, bit <<= 1) { - if ((rnp->qsmask & bit) != 0 && f(rsp->rda[cpu])) + if ((rnp->qsmask & bit) != 0 && + f(per_cpu_ptr(rsp->rda, cpu))) mask |= bit; } if (mask != 0) { @@ -1402,7 +1439,7 @@ __call_rcu(struct rcu_head *head, void (*func)(struct rcu_head *rcu), * a quiescent state betweentimes. */ local_irq_save(flags); - rdp = rsp->rda[smp_processor_id()]; + rdp = this_cpu_ptr(rsp->rda); rcu_process_gp_end(rsp, rdp); check_for_new_grace_period(rsp, rdp); @@ -1701,7 +1738,7 @@ rcu_boot_init_percpu_data(int cpu, struct rcu_state *rsp) { unsigned long flags; int i; - struct rcu_data *rdp = rsp->rda[cpu]; + struct rcu_data *rdp = per_cpu_ptr(rsp->rda, cpu); struct rcu_node *rnp = rcu_get_root(rsp); /* Set up local state, ensuring consistent view of global state. */ @@ -1729,7 +1766,7 @@ rcu_init_percpu_data(int cpu, struct rcu_state *rsp, int preemptable) { unsigned long flags; unsigned long mask; - struct rcu_data *rdp = rsp->rda[cpu]; + struct rcu_data *rdp = per_cpu_ptr(rsp->rda, cpu); struct rcu_node *rnp = rcu_get_root(rsp); /* Set up local state, ensuring consistent view of global state. */ @@ -1865,7 +1902,8 @@ static void __init rcu_init_levelspread(struct rcu_state *rsp) /* * Helper function for rcu_init() that initializes one rcu_state structure. */ -static void __init rcu_init_one(struct rcu_state *rsp) +static void __init rcu_init_one(struct rcu_state *rsp, + struct rcu_data __percpu *rda) { static char *buf[] = { "rcu_node_level_0", "rcu_node_level_1", @@ -1918,37 +1956,23 @@ static void __init rcu_init_one(struct rcu_state *rsp) } } + rsp->rda = rda; rnp = rsp->level[NUM_RCU_LVLS - 1]; for_each_possible_cpu(i) { while (i > rnp->grphi) rnp++; - rsp->rda[i]->mynode = rnp; + per_cpu_ptr(rsp->rda, i)->mynode = rnp; rcu_boot_init_percpu_data(i, rsp); } } -/* - * Helper macro for __rcu_init() and __rcu_init_preempt(). To be used - * nowhere else! Assigns leaf node pointers into each CPU's rcu_data - * structure. - */ -#define RCU_INIT_FLAVOR(rsp, rcu_data) \ -do { \ - int i; \ - \ - for_each_possible_cpu(i) { \ - (rsp)->rda[i] = &per_cpu(rcu_data, i); \ - } \ - rcu_init_one(rsp); \ -} while (0) - void __init rcu_init(void) { int cpu; rcu_bootup_announce(); - RCU_INIT_FLAVOR(&rcu_sched_state, rcu_sched_data); - RCU_INIT_FLAVOR(&rcu_bh_state, rcu_bh_data); + rcu_init_one(&rcu_sched_state, &rcu_sched_data); + rcu_init_one(&rcu_bh_state, &rcu_bh_data); __rcu_init_preempt(); open_softirq(RCU_SOFTIRQ, rcu_process_callbacks); diff --git a/kernel/rcutree.h b/kernel/rcutree.h index 14c040b18ed0..91d4170c5c13 100644 --- a/kernel/rcutree.h +++ b/kernel/rcutree.h @@ -202,6 +202,9 @@ struct rcu_data { long qlen; /* # of queued callbacks */ long qlen_last_fqs_check; /* qlen at last check for QS forcing */ + unsigned long n_cbs_invoked; /* count of RCU cbs invoked. */ + unsigned long n_cbs_orphaned; /* RCU cbs sent to orphanage. */ + unsigned long n_cbs_adopted; /* RCU cbs adopted from orphanage. */ unsigned long n_force_qs_snap; /* did other CPU force QS recently? */ long blimit; /* Upper limit on a processed batch */ @@ -254,19 +257,23 @@ struct rcu_data { #define RCU_STALL_DELAY_DELTA 0 #endif -#define RCU_SECONDS_TILL_STALL_CHECK (10 * HZ + RCU_STALL_DELAY_DELTA) +#define RCU_SECONDS_TILL_STALL_CHECK (CONFIG_RCU_CPU_STALL_TIMEOUT * HZ + \ + RCU_STALL_DELAY_DELTA) /* for rsp->jiffies_stall */ -#define RCU_SECONDS_TILL_STALL_RECHECK (30 * HZ + RCU_STALL_DELAY_DELTA) +#define RCU_SECONDS_TILL_STALL_RECHECK (3 * RCU_SECONDS_TILL_STALL_CHECK + 30) /* for rsp->jiffies_stall */ #define RCU_STALL_RAT_DELAY 2 /* Allow other CPUs time */ /* to take at least one */ /* scheduling clock irq */ /* before ratting on them. */ -#endif /* #ifdef CONFIG_RCU_CPU_STALL_DETECTOR */ +#ifdef CONFIG_RCU_CPU_STALL_DETECTOR_RUNNABLE +#define RCU_CPU_STALL_SUPPRESS_INIT 0 +#else +#define RCU_CPU_STALL_SUPPRESS_INIT 1 +#endif -#define ULONG_CMP_GE(a, b) (ULONG_MAX / 2 >= (a) - (b)) -#define ULONG_CMP_LT(a, b) (ULONG_MAX / 2 < (a) - (b)) +#endif /* #ifdef CONFIG_RCU_CPU_STALL_DETECTOR */ /* * RCU global state, including node hierarchy. This hierarchy is @@ -283,7 +290,7 @@ struct rcu_state { struct rcu_node *level[NUM_RCU_LVLS]; /* Hierarchy levels. */ u32 levelcnt[MAX_RCU_LVLS + 1]; /* # nodes in each level. */ u8 levelspread[NUM_RCU_LVLS]; /* kids/node in each level. */ - struct rcu_data *rda[NR_CPUS]; /* array of rdp pointers. */ + struct rcu_data __percpu *rda; /* pointer of percu rcu_data. */ /* The following fields are guarded by the root rcu_node's lock. */ @@ -365,6 +372,7 @@ static void rcu_report_unblock_qs_rnp(struct rcu_node *rnp, #ifdef CONFIG_RCU_CPU_STALL_DETECTOR static void rcu_print_detail_task_stall(struct rcu_state *rsp); static void rcu_print_task_stall(struct rcu_node *rnp); +static void rcu_preempt_stall_reset(void); #endif /* #ifdef CONFIG_RCU_CPU_STALL_DETECTOR */ static void rcu_preempt_check_blocked_tasks(struct rcu_node *rnp); #ifdef CONFIG_HOTPLUG_CPU diff --git a/kernel/rcutree_plugin.h b/kernel/rcutree_plugin.h index 0e4f420245d9..71a4147473f9 100644 --- a/kernel/rcutree_plugin.h +++ b/kernel/rcutree_plugin.h @@ -57,7 +57,7 @@ static void __init rcu_bootup_announce_oddness(void) printk(KERN_INFO "\tRCU-based detection of stalled CPUs is disabled.\n"); #endif -#ifndef CONFIG_RCU_CPU_STALL_VERBOSE +#if defined(CONFIG_TREE_PREEMPT_RCU) && !defined(CONFIG_RCU_CPU_STALL_VERBOSE) printk(KERN_INFO "\tVerbose stalled-CPUs detection is disabled.\n"); #endif #if NUM_RCU_LVL_4 != 0 @@ -154,7 +154,7 @@ static void rcu_preempt_note_context_switch(int cpu) (t->rcu_read_unlock_special & RCU_READ_UNLOCK_BLOCKED) == 0) { /* Possibly blocking in an RCU read-side critical section. */ - rdp = rcu_preempt_state.rda[cpu]; + rdp = per_cpu_ptr(rcu_preempt_state.rda, cpu); rnp = rdp->mynode; raw_spin_lock_irqsave(&rnp->lock, flags); t->rcu_read_unlock_special |= RCU_READ_UNLOCK_BLOCKED; @@ -201,7 +201,7 @@ static void rcu_preempt_note_context_switch(int cpu) */ void __rcu_read_lock(void) { - ACCESS_ONCE(current->rcu_read_lock_nesting)++; + current->rcu_read_lock_nesting++; barrier(); /* needed if we ever invoke rcu_read_lock in rcutree.c */ } EXPORT_SYMBOL_GPL(__rcu_read_lock); @@ -344,7 +344,9 @@ void __rcu_read_unlock(void) struct task_struct *t = current; barrier(); /* needed if we ever invoke rcu_read_unlock in rcutree.c */ - if (--ACCESS_ONCE(t->rcu_read_lock_nesting) == 0 && + --t->rcu_read_lock_nesting; + barrier(); /* decrement before load of ->rcu_read_unlock_special */ + if (t->rcu_read_lock_nesting == 0 && unlikely(ACCESS_ONCE(t->rcu_read_unlock_special))) rcu_read_unlock_special(t); #ifdef CONFIG_PROVE_LOCKING @@ -417,6 +419,16 @@ static void rcu_print_task_stall(struct rcu_node *rnp) } } +/* + * Suppress preemptible RCU's CPU stall warnings by pushing the + * time of the next stall-warning message comfortably far into the + * future. + */ +static void rcu_preempt_stall_reset(void) +{ + rcu_preempt_state.jiffies_stall = jiffies + ULONG_MAX / 2; +} + #endif /* #ifdef CONFIG_RCU_CPU_STALL_DETECTOR */ /* @@ -546,9 +558,11 @@ EXPORT_SYMBOL_GPL(call_rcu); * * Control will return to the caller some time after a full grace * period has elapsed, in other words after all currently executing RCU - * read-side critical sections have completed. RCU read-side critical - * sections are delimited by rcu_read_lock() and rcu_read_unlock(), - * and may be nested. + * read-side critical sections have completed. Note, however, that + * upon return from synchronize_rcu(), the caller might well be executing + * concurrently with new RCU read-side critical sections that began while + * synchronize_rcu() was waiting. RCU read-side critical sections are + * delimited by rcu_read_lock() and rcu_read_unlock(), and may be nested. */ void synchronize_rcu(void) { @@ -771,7 +785,7 @@ static void rcu_preempt_send_cbs_to_orphanage(void) */ static void __init __rcu_init_preempt(void) { - RCU_INIT_FLAVOR(&rcu_preempt_state, rcu_preempt_data); + rcu_init_one(&rcu_preempt_state, &rcu_preempt_data); } /* @@ -865,6 +879,14 @@ static void rcu_print_task_stall(struct rcu_node *rnp) { } +/* + * Because preemptible RCU does not exist, there is no need to suppress + * its CPU stall warnings. + */ +static void rcu_preempt_stall_reset(void) +{ +} + #endif /* #ifdef CONFIG_RCU_CPU_STALL_DETECTOR */ /* @@ -919,15 +941,6 @@ static void rcu_preempt_process_callbacks(void) } /* - * In classic RCU, call_rcu() is just call_rcu_sched(). - */ -void call_rcu(struct rcu_head *head, void (*func)(struct rcu_head *rcu)) -{ - call_rcu_sched(head, func); -} -EXPORT_SYMBOL_GPL(call_rcu); - -/* * Wait for an rcu-preempt grace period, but make it happen quickly. * But because preemptable RCU does not exist, map to rcu-sched. */ diff --git a/kernel/rcutree_trace.c b/kernel/rcutree_trace.c index 36c95b45738e..d15430b9d122 100644 --- a/kernel/rcutree_trace.c +++ b/kernel/rcutree_trace.c @@ -64,7 +64,9 @@ static void print_one_rcu_data(struct seq_file *m, struct rcu_data *rdp) rdp->dynticks_fqs); #endif /* #ifdef CONFIG_NO_HZ */ seq_printf(m, " of=%lu ri=%lu", rdp->offline_fqs, rdp->resched_ipi); - seq_printf(m, " ql=%ld b=%ld\n", rdp->qlen, rdp->blimit); + seq_printf(m, " ql=%ld b=%ld", rdp->qlen, rdp->blimit); + seq_printf(m, " ci=%lu co=%lu ca=%lu\n", + rdp->n_cbs_invoked, rdp->n_cbs_orphaned, rdp->n_cbs_adopted); } #define PRINT_RCU_DATA(name, func, m) \ @@ -119,7 +121,9 @@ static void print_one_rcu_data_csv(struct seq_file *m, struct rcu_data *rdp) rdp->dynticks_fqs); #endif /* #ifdef CONFIG_NO_HZ */ seq_printf(m, ",%lu,%lu", rdp->offline_fqs, rdp->resched_ipi); - seq_printf(m, ",%ld,%ld\n", rdp->qlen, rdp->blimit); + seq_printf(m, ",%ld,%ld", rdp->qlen, rdp->blimit); + seq_printf(m, ",%lu,%lu,%lu\n", + rdp->n_cbs_invoked, rdp->n_cbs_orphaned, rdp->n_cbs_adopted); } static int show_rcudata_csv(struct seq_file *m, void *unused) @@ -128,7 +132,7 @@ static int show_rcudata_csv(struct seq_file *m, void *unused) #ifdef CONFIG_NO_HZ seq_puts(m, "\"dt\",\"dt nesting\",\"dn\",\"df\","); #endif /* #ifdef CONFIG_NO_HZ */ - seq_puts(m, "\"of\",\"ri\",\"ql\",\"b\"\n"); + seq_puts(m, "\"of\",\"ri\",\"ql\",\"b\",\"ci\",\"co\",\"ca\"\n"); #ifdef CONFIG_TREE_PREEMPT_RCU seq_puts(m, "\"rcu_preempt:\"\n"); PRINT_RCU_DATA(rcu_preempt_data, print_one_rcu_data_csv, m); @@ -262,7 +266,7 @@ static void print_rcu_pendings(struct seq_file *m, struct rcu_state *rsp) struct rcu_data *rdp; for_each_possible_cpu(cpu) { - rdp = rsp->rda[cpu]; + rdp = per_cpu_ptr(rsp->rda, cpu); if (rdp->beenonline) print_one_rcu_pending(m, rdp); } diff --git a/kernel/sched.c b/kernel/sched.c index dc85ceb90832..d42992bccdfa 100644 --- a/kernel/sched.c +++ b/kernel/sched.c @@ -426,9 +426,7 @@ struct root_domain { */ cpumask_var_t rto_mask; atomic_t rto_count; -#ifdef CONFIG_SMP struct cpupri cpupri; -#endif }; /* @@ -437,7 +435,7 @@ struct root_domain { */ static struct root_domain def_root_domain; -#endif +#endif /* CONFIG_SMP */ /* * This is the main, per-CPU runqueue data structure. @@ -488,11 +486,12 @@ struct rq { */ unsigned long nr_uninterruptible; - struct task_struct *curr, *idle; + struct task_struct *curr, *idle, *stop; unsigned long next_balance; struct mm_struct *prev_mm; u64 clock; + u64 clock_task; atomic_t nr_iowait; @@ -520,6 +519,10 @@ struct rq { u64 avg_idle; #endif +#ifdef CONFIG_IRQ_TIME_ACCOUNTING + u64 prev_irq_time; +#endif + /* calc_load related fields */ unsigned long calc_load_update; long calc_load_active; @@ -643,10 +646,22 @@ static inline struct task_group *task_group(struct task_struct *p) #endif /* CONFIG_CGROUP_SCHED */ +static u64 irq_time_cpu(int cpu); +static void sched_irq_time_avg_update(struct rq *rq, u64 irq_time); + inline void update_rq_clock(struct rq *rq) { - if (!rq->skip_clock_update) - rq->clock = sched_clock_cpu(cpu_of(rq)); + if (!rq->skip_clock_update) { + int cpu = cpu_of(rq); + u64 irq_time; + + rq->clock = sched_clock_cpu(cpu); + irq_time = irq_time_cpu(cpu); + if (rq->clock - irq_time > rq->clock_task) + rq->clock_task = rq->clock - irq_time; + + sched_irq_time_avg_update(rq, irq_time); + } } /* @@ -723,7 +738,7 @@ sched_feat_write(struct file *filp, const char __user *ubuf, size_t cnt, loff_t *ppos) { char buf[64]; - char *cmp = buf; + char *cmp; int neg = 0; int i; @@ -734,6 +749,7 @@ sched_feat_write(struct file *filp, const char __user *ubuf, return -EFAULT; buf[cnt] = 0; + cmp = strstrip(buf); if (strncmp(buf, "NO_", 3) == 0) { neg = 1; @@ -741,9 +757,7 @@ sched_feat_write(struct file *filp, const char __user *ubuf, } for (i = 0; sched_feat_names[i]; i++) { - int len = strlen(sched_feat_names[i]); - - if (strncmp(cmp, sched_feat_names[i], len) == 0) { + if (strcmp(cmp, sched_feat_names[i]) == 0) { if (neg) sysctl_sched_features &= ~(1UL << i); else @@ -1840,7 +1854,7 @@ static inline void __set_task_cpu(struct task_struct *p, unsigned int cpu) static const struct sched_class rt_sched_class; -#define sched_class_highest (&rt_sched_class) +#define sched_class_highest (&stop_sched_class) #define for_each_class(class) \ for (class = sched_class_highest; class; class = class->next) @@ -1858,12 +1872,6 @@ static void dec_nr_running(struct rq *rq) static void set_load_weight(struct task_struct *p) { - if (task_has_rt_policy(p)) { - p->se.load.weight = 0; - p->se.load.inv_weight = WMULT_CONST; - return; - } - /* * SCHED_IDLE tasks get minimal weight: */ @@ -1917,13 +1925,132 @@ static void deactivate_task(struct rq *rq, struct task_struct *p, int flags) dec_nr_running(rq); } +#ifdef CONFIG_IRQ_TIME_ACCOUNTING + +/* + * There are no locks covering percpu hardirq/softirq time. + * They are only modified in account_system_vtime, on corresponding CPU + * with interrupts disabled. So, writes are safe. + * They are read and saved off onto struct rq in update_rq_clock(). + * This may result in other CPU reading this CPU's irq time and can + * race with irq/account_system_vtime on this CPU. We would either get old + * or new value (or semi updated value on 32 bit) with a side effect of + * accounting a slice of irq time to wrong task when irq is in progress + * while we read rq->clock. That is a worthy compromise in place of having + * locks on each irq in account_system_time. + */ +static DEFINE_PER_CPU(u64, cpu_hardirq_time); +static DEFINE_PER_CPU(u64, cpu_softirq_time); + +static DEFINE_PER_CPU(u64, irq_start_time); +static int sched_clock_irqtime; + +void enable_sched_clock_irqtime(void) +{ + sched_clock_irqtime = 1; +} + +void disable_sched_clock_irqtime(void) +{ + sched_clock_irqtime = 0; +} + +static u64 irq_time_cpu(int cpu) +{ + if (!sched_clock_irqtime) + return 0; + + return per_cpu(cpu_softirq_time, cpu) + per_cpu(cpu_hardirq_time, cpu); +} + +void account_system_vtime(struct task_struct *curr) +{ + unsigned long flags; + int cpu; + u64 now, delta; + + if (!sched_clock_irqtime) + return; + + local_irq_save(flags); + + cpu = smp_processor_id(); + now = sched_clock_cpu(cpu); + delta = now - per_cpu(irq_start_time, cpu); + per_cpu(irq_start_time, cpu) = now; + /* + * We do not account for softirq time from ksoftirqd here. + * We want to continue accounting softirq time to ksoftirqd thread + * in that case, so as not to confuse scheduler with a special task + * that do not consume any time, but still wants to run. + */ + if (hardirq_count()) + per_cpu(cpu_hardirq_time, cpu) += delta; + else if (in_serving_softirq() && !(curr->flags & PF_KSOFTIRQD)) + per_cpu(cpu_softirq_time, cpu) += delta; + + local_irq_restore(flags); +} +EXPORT_SYMBOL_GPL(account_system_vtime); + +static void sched_irq_time_avg_update(struct rq *rq, u64 curr_irq_time) +{ + if (sched_clock_irqtime && sched_feat(NONIRQ_POWER)) { + u64 delta_irq = curr_irq_time - rq->prev_irq_time; + rq->prev_irq_time = curr_irq_time; + sched_rt_avg_update(rq, delta_irq); + } +} + +#else + +static u64 irq_time_cpu(int cpu) +{ + return 0; +} + +static void sched_irq_time_avg_update(struct rq *rq, u64 curr_irq_time) { } + +#endif + #include "sched_idletask.c" #include "sched_fair.c" #include "sched_rt.c" +#include "sched_stoptask.c" #ifdef CONFIG_SCHED_DEBUG # include "sched_debug.c" #endif +void sched_set_stop_task(int cpu, struct task_struct *stop) +{ + struct sched_param param = { .sched_priority = MAX_RT_PRIO - 1 }; + struct task_struct *old_stop = cpu_rq(cpu)->stop; + + if (stop) { + /* + * Make it appear like a SCHED_FIFO task, its something + * userspace knows about and won't get confused about. + * + * Also, it will make PI more or less work without too + * much confusion -- but then, stop work should not + * rely on PI working anyway. + */ + sched_setscheduler_nocheck(stop, SCHED_FIFO, ¶m); + + stop->sched_class = &stop_sched_class; + } + + cpu_rq(cpu)->stop = stop; + + if (old_stop) { + /* + * Reset it back to a normal scheduling class so that + * it can die in pieces. + */ + old_stop->sched_class = &rt_sched_class; + } +} + /* * __normal_prio - return the priority that is based on the static prio */ @@ -2003,6 +2130,9 @@ task_hot(struct task_struct *p, u64 now, struct sched_domain *sd) if (p->sched_class != &fair_sched_class) return 0; + if (unlikely(p->policy == SCHED_IDLE)) + return 0; + /* * Buddy candidates are cache hot: */ @@ -2852,14 +2982,14 @@ context_switch(struct rq *rq, struct task_struct *prev, */ arch_start_context_switch(prev); - if (likely(!mm)) { + if (!mm) { next->active_mm = oldmm; atomic_inc(&oldmm->mm_count); enter_lazy_tlb(oldmm, next); } else switch_mm(oldmm, mm, next); - if (likely(!prev->mm)) { + if (!prev->mm) { prev->active_mm = NULL; rq->prev_mm = oldmm; } @@ -3248,7 +3378,7 @@ static u64 do_task_delta_exec(struct task_struct *p, struct rq *rq) if (task_current(rq, p)) { update_rq_clock(rq); - ns = rq->clock - p->se.exec_start; + ns = rq->clock_task - p->se.exec_start; if ((s64)ns < 0) ns = 0; } @@ -3397,7 +3527,7 @@ void account_system_time(struct task_struct *p, int hardirq_offset, tmp = cputime_to_cputime64(cputime); if (hardirq_count() - hardirq_offset) cpustat->irq = cputime64_add(cpustat->irq, tmp); - else if (softirq_count()) + else if (in_serving_softirq()) cpustat->softirq = cputime64_add(cpustat->softirq, tmp); else cpustat->system = cputime64_add(cpustat->system, tmp); @@ -3584,7 +3714,7 @@ void scheduler_tick(void) curr->sched_class->task_tick(rq, curr, 0); raw_spin_unlock(&rq->lock); - perf_event_task_tick(curr); + perf_event_task_tick(); #ifdef CONFIG_SMP rq->idle_at_tick = idle_cpu(cpu); @@ -3723,17 +3853,13 @@ pick_next_task(struct rq *rq) return p; } - class = sched_class_highest; - for ( ; ; ) { + for_each_class(class) { p = class->pick_next_task(rq); if (p) return p; - /* - * Will never be NULL as the idle class always - * returns a non-NULL p: - */ - class = class->next; } + + BUG(); /* the idle class will always have a runnable task */ } /* @@ -4358,6 +4484,7 @@ void rt_mutex_setprio(struct task_struct *p, int prio) rq = task_rq_lock(p, &flags); + trace_sched_pi_setprio(p, prio); oldprio = p->prio; prev_class = p->sched_class; on_rq = p->se.on_rq; @@ -4645,7 +4772,7 @@ recheck: } if (user) { - retval = security_task_setscheduler(p, policy, param); + retval = security_task_setscheduler(p); if (retval) return retval; } @@ -4661,6 +4788,15 @@ recheck: */ rq = __task_rq_lock(p); + /* + * Changing the policy of the stop threads its a very bad idea + */ + if (p == rq->stop) { + __task_rq_unlock(rq); + raw_spin_unlock_irqrestore(&p->pi_lock, flags); + return -EINVAL; + } + #ifdef CONFIG_RT_GROUP_SCHED if (user) { /* @@ -4887,13 +5023,13 @@ long sched_setaffinity(pid_t pid, const struct cpumask *in_mask) if (!check_same_owner(p) && !capable(CAP_SYS_NICE)) goto out_unlock; - retval = security_task_setscheduler(p, 0, NULL); + retval = security_task_setscheduler(p); if (retval) goto out_unlock; cpuset_cpus_allowed(p, cpus_allowed); cpumask_and(new_mask, in_mask, cpus_allowed); - again: +again: retval = set_cpus_allowed_ptr(p, new_mask); if (!retval) { @@ -5337,7 +5473,19 @@ void __cpuinit init_idle(struct task_struct *idle, int cpu) idle->se.exec_start = sched_clock(); cpumask_copy(&idle->cpus_allowed, cpumask_of(cpu)); + /* + * We're having a chicken and egg problem, even though we are + * holding rq->lock, the cpu isn't yet set to this cpu so the + * lockdep check in task_group() will fail. + * + * Similar case to sched_fork(). / Alternatively we could + * use task_rq_lock() here and obtain the other rq->lock. + * + * Silence PROVE_RCU + */ + rcu_read_lock(); __set_task_cpu(idle, cpu); + rcu_read_unlock(); rq->curr = rq->idle = idle; #if defined(CONFIG_SMP) && defined(__ARCH_WANT_UNLOCKED_CTXSW) @@ -6514,6 +6662,7 @@ struct s_data { cpumask_var_t nodemask; cpumask_var_t this_sibling_map; cpumask_var_t this_core_map; + cpumask_var_t this_book_map; cpumask_var_t send_covered; cpumask_var_t tmpmask; struct sched_group **sched_group_nodes; @@ -6525,6 +6674,7 @@ enum s_alloc { sa_rootdomain, sa_tmpmask, sa_send_covered, + sa_this_book_map, sa_this_core_map, sa_this_sibling_map, sa_nodemask, @@ -6560,31 +6710,48 @@ cpu_to_cpu_group(int cpu, const struct cpumask *cpu_map, #ifdef CONFIG_SCHED_MC static DEFINE_PER_CPU(struct static_sched_domain, core_domains); static DEFINE_PER_CPU(struct static_sched_group, sched_group_core); -#endif /* CONFIG_SCHED_MC */ -#if defined(CONFIG_SCHED_MC) && defined(CONFIG_SCHED_SMT) static int cpu_to_core_group(int cpu, const struct cpumask *cpu_map, struct sched_group **sg, struct cpumask *mask) { int group; - +#ifdef CONFIG_SCHED_SMT cpumask_and(mask, topology_thread_cpumask(cpu), cpu_map); group = cpumask_first(mask); +#else + group = cpu; +#endif if (sg) *sg = &per_cpu(sched_group_core, group).sg; return group; } -#elif defined(CONFIG_SCHED_MC) +#endif /* CONFIG_SCHED_MC */ + +/* + * book sched-domains: + */ +#ifdef CONFIG_SCHED_BOOK +static DEFINE_PER_CPU(struct static_sched_domain, book_domains); +static DEFINE_PER_CPU(struct static_sched_group, sched_group_book); + static int -cpu_to_core_group(int cpu, const struct cpumask *cpu_map, - struct sched_group **sg, struct cpumask *unused) +cpu_to_book_group(int cpu, const struct cpumask *cpu_map, + struct sched_group **sg, struct cpumask *mask) { + int group = cpu; +#ifdef CONFIG_SCHED_MC + cpumask_and(mask, cpu_coregroup_mask(cpu), cpu_map); + group = cpumask_first(mask); +#elif defined(CONFIG_SCHED_SMT) + cpumask_and(mask, topology_thread_cpumask(cpu), cpu_map); + group = cpumask_first(mask); +#endif if (sg) - *sg = &per_cpu(sched_group_core, cpu).sg; - return cpu; + *sg = &per_cpu(sched_group_book, group).sg; + return group; } -#endif +#endif /* CONFIG_SCHED_BOOK */ static DEFINE_PER_CPU(struct static_sched_domain, phys_domains); static DEFINE_PER_CPU(struct static_sched_group, sched_group_phys); @@ -6594,7 +6761,10 @@ cpu_to_phys_group(int cpu, const struct cpumask *cpu_map, struct sched_group **sg, struct cpumask *mask) { int group; -#ifdef CONFIG_SCHED_MC +#ifdef CONFIG_SCHED_BOOK + cpumask_and(mask, cpu_book_mask(cpu), cpu_map); + group = cpumask_first(mask); +#elif defined(CONFIG_SCHED_MC) cpumask_and(mask, cpu_coregroup_mask(cpu), cpu_map); group = cpumask_first(mask); #elif defined(CONFIG_SCHED_SMT) @@ -6855,6 +7025,9 @@ SD_INIT_FUNC(CPU) #ifdef CONFIG_SCHED_MC SD_INIT_FUNC(MC) #endif +#ifdef CONFIG_SCHED_BOOK + SD_INIT_FUNC(BOOK) +#endif static int default_relax_domain_level = -1; @@ -6904,6 +7077,8 @@ static void __free_domain_allocs(struct s_data *d, enum s_alloc what, free_cpumask_var(d->tmpmask); /* fall through */ case sa_send_covered: free_cpumask_var(d->send_covered); /* fall through */ + case sa_this_book_map: + free_cpumask_var(d->this_book_map); /* fall through */ case sa_this_core_map: free_cpumask_var(d->this_core_map); /* fall through */ case sa_this_sibling_map: @@ -6950,8 +7125,10 @@ static enum s_alloc __visit_domain_allocation_hell(struct s_data *d, return sa_nodemask; if (!alloc_cpumask_var(&d->this_core_map, GFP_KERNEL)) return sa_this_sibling_map; - if (!alloc_cpumask_var(&d->send_covered, GFP_KERNEL)) + if (!alloc_cpumask_var(&d->this_book_map, GFP_KERNEL)) return sa_this_core_map; + if (!alloc_cpumask_var(&d->send_covered, GFP_KERNEL)) + return sa_this_book_map; if (!alloc_cpumask_var(&d->tmpmask, GFP_KERNEL)) return sa_send_covered; d->rd = alloc_rootdomain(); @@ -7009,6 +7186,23 @@ static struct sched_domain *__build_cpu_sched_domain(struct s_data *d, return sd; } +static struct sched_domain *__build_book_sched_domain(struct s_data *d, + const struct cpumask *cpu_map, struct sched_domain_attr *attr, + struct sched_domain *parent, int i) +{ + struct sched_domain *sd = parent; +#ifdef CONFIG_SCHED_BOOK + sd = &per_cpu(book_domains, i).sd; + SD_INIT(sd, BOOK); + set_domain_attribute(sd, attr); + cpumask_and(sched_domain_span(sd), cpu_map, cpu_book_mask(i)); + sd->parent = parent; + parent->child = sd; + cpu_to_book_group(i, cpu_map, &sd->groups, d->tmpmask); +#endif + return sd; +} + static struct sched_domain *__build_mc_sched_domain(struct s_data *d, const struct cpumask *cpu_map, struct sched_domain_attr *attr, struct sched_domain *parent, int i) @@ -7066,6 +7260,15 @@ static void build_sched_groups(struct s_data *d, enum sched_domain_level l, d->send_covered, d->tmpmask); break; #endif +#ifdef CONFIG_SCHED_BOOK + case SD_LV_BOOK: /* set up book groups */ + cpumask_and(d->this_book_map, cpu_map, cpu_book_mask(cpu)); + if (cpu == cpumask_first(d->this_book_map)) + init_sched_build_groups(d->this_book_map, cpu_map, + &cpu_to_book_group, + d->send_covered, d->tmpmask); + break; +#endif case SD_LV_CPU: /* set up physical groups */ cpumask_and(d->nodemask, cpumask_of_node(cpu), cpu_map); if (!cpumask_empty(d->nodemask)) @@ -7113,12 +7316,14 @@ static int __build_sched_domains(const struct cpumask *cpu_map, sd = __build_numa_sched_domains(&d, cpu_map, attr, i); sd = __build_cpu_sched_domain(&d, cpu_map, attr, sd, i); + sd = __build_book_sched_domain(&d, cpu_map, attr, sd, i); sd = __build_mc_sched_domain(&d, cpu_map, attr, sd, i); sd = __build_smt_sched_domain(&d, cpu_map, attr, sd, i); } for_each_cpu(i, cpu_map) { build_sched_groups(&d, SD_LV_SIBLING, cpu_map, i); + build_sched_groups(&d, SD_LV_BOOK, cpu_map, i); build_sched_groups(&d, SD_LV_MC, cpu_map, i); } @@ -7149,6 +7354,12 @@ static int __build_sched_domains(const struct cpumask *cpu_map, init_sched_groups_power(i, sd); } #endif +#ifdef CONFIG_SCHED_BOOK + for_each_cpu(i, cpu_map) { + sd = &per_cpu(book_domains, i).sd; + init_sched_groups_power(i, sd); + } +#endif for_each_cpu(i, cpu_map) { sd = &per_cpu(phys_domains, i).sd; @@ -7174,6 +7385,8 @@ static int __build_sched_domains(const struct cpumask *cpu_map, sd = &per_cpu(cpu_domains, i).sd; #elif defined(CONFIG_SCHED_MC) sd = &per_cpu(core_domains, i).sd; +#elif defined(CONFIG_SCHED_BOOK) + sd = &per_cpu(book_domains, i).sd; #else sd = &per_cpu(phys_domains, i).sd; #endif @@ -8078,9 +8291,9 @@ int alloc_fair_sched_group(struct task_group *tg, struct task_group *parent) return 1; - err_free_rq: +err_free_rq: kfree(cfs_rq); - err: +err: return 0; } @@ -8168,9 +8381,9 @@ int alloc_rt_sched_group(struct task_group *tg, struct task_group *parent) return 1; - err_free_rq: +err_free_rq: kfree(rt_rq); - err: +err: return 0; } @@ -8528,7 +8741,7 @@ static int tg_set_bandwidth(struct task_group *tg, raw_spin_unlock(&rt_rq->rt_runtime_lock); } raw_spin_unlock_irq(&tg->rt_bandwidth.rt_runtime_lock); - unlock: +unlock: read_unlock(&tasklist_lock); mutex_unlock(&rt_constraints_mutex); diff --git a/kernel/sched_fair.c b/kernel/sched_fair.c index db3f674ca49d..933f3d1b62ea 100644 --- a/kernel/sched_fair.c +++ b/kernel/sched_fair.c @@ -25,7 +25,7 @@ /* * Targeted preemption latency for CPU-bound tasks: - * (default: 5ms * (1 + ilog(ncpus)), units: nanoseconds) + * (default: 6ms * (1 + ilog(ncpus)), units: nanoseconds) * * NOTE: this latency value is not the same as the concept of * 'timeslice length' - timeslices in CFS are of variable length @@ -52,7 +52,7 @@ enum sched_tunable_scaling sysctl_sched_tunable_scaling /* * Minimal preemption granularity for CPU-bound tasks: - * (default: 2 msec * (1 + ilog(ncpus)), units: nanoseconds) + * (default: 0.75 msec * (1 + ilog(ncpus)), units: nanoseconds) */ unsigned int sysctl_sched_min_granularity = 750000ULL; unsigned int normalized_sysctl_sched_min_granularity = 750000ULL; @@ -519,7 +519,7 @@ __update_curr(struct cfs_rq *cfs_rq, struct sched_entity *curr, static void update_curr(struct cfs_rq *cfs_rq) { struct sched_entity *curr = cfs_rq->curr; - u64 now = rq_of(cfs_rq)->clock; + u64 now = rq_of(cfs_rq)->clock_task; unsigned long delta_exec; if (unlikely(!curr)) @@ -602,7 +602,7 @@ update_stats_curr_start(struct cfs_rq *cfs_rq, struct sched_entity *se) /* * We are starting a new run period: */ - se->exec_start = rq_of(cfs_rq)->clock; + se->exec_start = rq_of(cfs_rq)->clock_task; } /************************************************** @@ -1764,6 +1764,10 @@ static void pull_task(struct rq *src_rq, struct task_struct *p, set_task_cpu(p, this_cpu); activate_task(this_rq, p, 0); check_preempt_curr(this_rq, p, 0); + + /* re-arm NEWIDLE balancing when moving tasks */ + src_rq->avg_idle = this_rq->avg_idle = 2*sysctl_sched_migration_cost; + this_rq->idle_stamp = 0; } /* @@ -1798,7 +1802,7 @@ int can_migrate_task(struct task_struct *p, struct rq *rq, int this_cpu, * 2) too many balance attempts have failed. */ - tsk_cache_hot = task_hot(p, rq->clock, sd); + tsk_cache_hot = task_hot(p, rq->clock_task, sd); if (!tsk_cache_hot || sd->nr_balance_failed > sd->cache_nice_tries) { #ifdef CONFIG_SCHEDSTATS @@ -2030,12 +2034,14 @@ struct sd_lb_stats { unsigned long this_load; unsigned long this_load_per_task; unsigned long this_nr_running; + unsigned long this_has_capacity; /* Statistics of the busiest group */ unsigned long max_load; unsigned long busiest_load_per_task; unsigned long busiest_nr_running; unsigned long busiest_group_capacity; + unsigned long busiest_has_capacity; int group_imb; /* Is there imbalance in this sd */ #if defined(CONFIG_SCHED_MC) || defined(CONFIG_SCHED_SMT) @@ -2058,6 +2064,7 @@ struct sg_lb_stats { unsigned long sum_weighted_load; /* Weighted load of group's tasks */ unsigned long group_capacity; int group_imb; /* Is there an imbalance in the group ? */ + int group_has_capacity; /* Is there extra capacity in the group? */ }; /** @@ -2268,7 +2275,13 @@ unsigned long scale_rt_power(int cpu) u64 total, available; total = sched_avg_period() + (rq->clock - rq->age_stamp); - available = total - rq->rt_avg; + + if (unlikely(total < rq->rt_avg)) { + /* Ensures that power won't end up being negative */ + available = 0; + } else { + available = total - rq->rt_avg; + } if (unlikely((s64)total < SCHED_LOAD_SCALE)) total = SCHED_LOAD_SCALE; @@ -2378,7 +2391,7 @@ static inline void update_sg_lb_stats(struct sched_domain *sd, int local_group, const struct cpumask *cpus, int *balance, struct sg_lb_stats *sgs) { - unsigned long load, max_cpu_load, min_cpu_load; + unsigned long load, max_cpu_load, min_cpu_load, max_nr_running; int i; unsigned int balance_cpu = -1, first_idle_cpu = 0; unsigned long avg_load_per_task = 0; @@ -2389,6 +2402,7 @@ static inline void update_sg_lb_stats(struct sched_domain *sd, /* Tally up the load of all CPUs in the group */ max_cpu_load = 0; min_cpu_load = ~0UL; + max_nr_running = 0; for_each_cpu_and(i, sched_group_cpus(group), cpus) { struct rq *rq = cpu_rq(i); @@ -2406,8 +2420,10 @@ static inline void update_sg_lb_stats(struct sched_domain *sd, load = target_load(i, load_idx); } else { load = source_load(i, load_idx); - if (load > max_cpu_load) + if (load > max_cpu_load) { max_cpu_load = load; + max_nr_running = rq->nr_running; + } if (min_cpu_load > load) min_cpu_load = load; } @@ -2447,13 +2463,15 @@ static inline void update_sg_lb_stats(struct sched_domain *sd, if (sgs->sum_nr_running) avg_load_per_task = sgs->sum_weighted_load / sgs->sum_nr_running; - if ((max_cpu_load - min_cpu_load) > 2*avg_load_per_task) + if ((max_cpu_load - min_cpu_load) > 2*avg_load_per_task && max_nr_running > 1) sgs->group_imb = 1; - sgs->group_capacity = - DIV_ROUND_CLOSEST(group->cpu_power, SCHED_LOAD_SCALE); + sgs->group_capacity = DIV_ROUND_CLOSEST(group->cpu_power, SCHED_LOAD_SCALE); if (!sgs->group_capacity) sgs->group_capacity = fix_small_capacity(sd, group); + + if (sgs->group_capacity > sgs->sum_nr_running) + sgs->group_has_capacity = 1; } /** @@ -2542,9 +2560,14 @@ static inline void update_sd_lb_stats(struct sched_domain *sd, int this_cpu, /* * In case the child domain prefers tasks go to siblings * first, lower the sg capacity to one so that we'll try - * and move all the excess tasks away. + * and move all the excess tasks away. We lower the capacity + * of a group only if the local group has the capacity to fit + * these excess tasks, i.e. nr_running < group_capacity. The + * extra check prevents the case where you always pull from the + * heaviest group when it is already under-utilized (possible + * with a large weight task outweighs the tasks on the system). */ - if (prefer_sibling) + if (prefer_sibling && !local_group && sds->this_has_capacity) sgs.group_capacity = min(sgs.group_capacity, 1UL); if (local_group) { @@ -2552,12 +2575,14 @@ static inline void update_sd_lb_stats(struct sched_domain *sd, int this_cpu, sds->this = sg; sds->this_nr_running = sgs.sum_nr_running; sds->this_load_per_task = sgs.sum_weighted_load; + sds->this_has_capacity = sgs.group_has_capacity; } else if (update_sd_pick_busiest(sd, sds, sg, &sgs, this_cpu)) { sds->max_load = sgs.avg_load; sds->busiest = sg; sds->busiest_nr_running = sgs.sum_nr_running; sds->busiest_group_capacity = sgs.group_capacity; sds->busiest_load_per_task = sgs.sum_weighted_load; + sds->busiest_has_capacity = sgs.group_has_capacity; sds->group_imb = sgs.group_imb; } @@ -2754,6 +2779,7 @@ static inline void calculate_imbalance(struct sd_lb_stats *sds, int this_cpu, return fix_small_imbalance(sds, this_cpu, imbalance); } + /******* find_busiest_group() helpers end here *********************/ /** @@ -2805,6 +2831,11 @@ find_busiest_group(struct sched_domain *sd, int this_cpu, * 4) This group is more busy than the avg busieness at this * sched_domain. * 5) The imbalance is within the specified limit. + * + * Note: when doing newidle balance, if the local group has excess + * capacity (i.e. nr_running < group_capacity) and the busiest group + * does not have any capacity, we force a load balance to pull tasks + * to the local group. In this case, we skip past checks 3, 4 and 5. */ if (!(*balance)) goto ret; @@ -2816,6 +2847,11 @@ find_busiest_group(struct sched_domain *sd, int this_cpu, if (!sds.busiest || sds.busiest_nr_running == 0) goto out_balanced; + /* SD_BALANCE_NEWIDLE trumps SMP nice when underutilized */ + if (idle == CPU_NEWLY_IDLE && sds.this_has_capacity && + !sds.busiest_has_capacity) + goto force_balance; + if (sds.this_load >= sds.max_load) goto out_balanced; @@ -2827,6 +2863,7 @@ find_busiest_group(struct sched_domain *sd, int this_cpu, if (100 * sds.max_load <= sd->imbalance_pct * sds.this_load) goto out_balanced; +force_balance: /* Looks like there is an imbalance. Compute it */ calculate_imbalance(&sds, this_cpu, imbalance); return sds.busiest; @@ -3031,7 +3068,14 @@ redo: if (!ld_moved) { schedstat_inc(sd, lb_failed[idle]); - sd->nr_balance_failed++; + /* + * Increment the failure counter only on periodic balance. + * We do not want newidle balance, which can be very + * frequent, pollute the failure counter causing + * excessive cache_hot migrations and active balances. + */ + if (idle != CPU_NEWLY_IDLE) + sd->nr_balance_failed++; if (need_active_balance(sd, sd_idle, idle, cpu_of(busiest), this_cpu)) { @@ -3153,10 +3197,8 @@ static void idle_balance(int this_cpu, struct rq *this_rq) interval = msecs_to_jiffies(sd->balance_interval); if (time_after(next_balance, sd->last_balance + interval)) next_balance = sd->last_balance + interval; - if (pulled_task) { - this_rq->idle_stamp = 0; + if (pulled_task) break; - } } raw_spin_lock(&this_rq->lock); @@ -3751,8 +3793,11 @@ static void task_fork_fair(struct task_struct *p) update_rq_clock(rq); - if (unlikely(task_cpu(p) != this_cpu)) + if (unlikely(task_cpu(p) != this_cpu)) { + rcu_read_lock(); __set_task_cpu(p, this_cpu); + rcu_read_unlock(); + } update_curr(cfs_rq); diff --git a/kernel/sched_features.h b/kernel/sched_features.h index 83c66e8ad3ee..185f920ec1a2 100644 --- a/kernel/sched_features.h +++ b/kernel/sched_features.h @@ -61,3 +61,8 @@ SCHED_FEAT(ASYM_EFF_LOAD, 1) * release the lock. Decreases scheduling overhead. */ SCHED_FEAT(OWNER_SPIN, 1) + +/* + * Decrement CPU power based on irq activity + */ +SCHED_FEAT(NONIRQ_POWER, 1) diff --git a/kernel/sched_rt.c b/kernel/sched_rt.c index d10c80ebb67a..bea7d79f7e9c 100644 --- a/kernel/sched_rt.c +++ b/kernel/sched_rt.c @@ -609,7 +609,7 @@ static void update_curr_rt(struct rq *rq) if (!task_has_rt_policy(curr)) return; - delta_exec = rq->clock - curr->se.exec_start; + delta_exec = rq->clock_task - curr->se.exec_start; if (unlikely((s64)delta_exec < 0)) delta_exec = 0; @@ -618,7 +618,7 @@ static void update_curr_rt(struct rq *rq) curr->se.sum_exec_runtime += delta_exec; account_group_exec_runtime(curr, delta_exec); - curr->se.exec_start = rq->clock; + curr->se.exec_start = rq->clock_task; cpuacct_charge(curr, delta_exec); sched_rt_avg_update(rq, delta_exec); @@ -960,18 +960,19 @@ select_task_rq_rt(struct rq *rq, struct task_struct *p, int sd_flag, int flags) * runqueue. Otherwise simply start this RT task * on its current runqueue. * - * We want to avoid overloading runqueues. Even if - * the RT task is of higher priority than the current RT task. - * RT tasks behave differently than other tasks. If - * one gets preempted, we try to push it off to another queue. - * So trying to keep a preempting RT task on the same - * cache hot CPU will force the running RT task to - * a cold CPU. So we waste all the cache for the lower - * RT task in hopes of saving some of a RT task - * that is just being woken and probably will have - * cold cache anyway. + * We want to avoid overloading runqueues. If the woken + * task is a higher priority, then it will stay on this CPU + * and the lower prio task should be moved to another CPU. + * Even though this will probably make the lower prio task + * lose its cache, we do not want to bounce a higher task + * around just because it gave up its CPU, perhaps for a + * lock? + * + * For equal prio tasks, we just let the scheduler sort it out. */ if (unlikely(rt_task(rq->curr)) && + (rq->curr->rt.nr_cpus_allowed < 2 || + rq->curr->prio < p->prio) && (p->rt.nr_cpus_allowed > 1)) { int cpu = find_lowest_rq(p); @@ -1074,7 +1075,7 @@ static struct task_struct *_pick_next_task_rt(struct rq *rq) } while (rt_rq); p = rt_task_of(rt_se); - p->se.exec_start = rq->clock; + p->se.exec_start = rq->clock_task; return p; } @@ -1139,7 +1140,7 @@ static struct task_struct *pick_next_highest_task_rt(struct rq *rq, int cpu) for_each_leaf_rt_rq(rt_rq, rq) { array = &rt_rq->active; idx = sched_find_first_bit(array->bitmap); - next_idx: +next_idx: if (idx >= MAX_RT_PRIO) continue; if (next && next->prio < idx) @@ -1315,7 +1316,7 @@ static int push_rt_task(struct rq *rq) if (!next_task) return 0; - retry: +retry: if (unlikely(next_task == rq->curr)) { WARN_ON(1); return 0; @@ -1463,7 +1464,7 @@ static int pull_rt_task(struct rq *this_rq) * but possible) */ } - skip: +skip: double_unlock_balance(this_rq, src_rq); } @@ -1491,7 +1492,10 @@ static void task_woken_rt(struct rq *rq, struct task_struct *p) if (!task_running(rq, p) && !test_tsk_need_resched(rq->curr) && has_pushable_tasks(rq) && - p->rt.nr_cpus_allowed > 1) + p->rt.nr_cpus_allowed > 1 && + rt_task(rq->curr) && + (rq->curr->rt.nr_cpus_allowed < 2 || + rq->curr->prio < p->prio)) push_rt_tasks(rq); } @@ -1709,7 +1713,7 @@ static void set_curr_task_rt(struct rq *rq) { struct task_struct *p = rq->curr; - p->se.exec_start = rq->clock; + p->se.exec_start = rq->clock_task; /* The running task is never eligible for pushing */ dequeue_pushable_task(rq, p); diff --git a/kernel/sched_stoptask.c b/kernel/sched_stoptask.c new file mode 100644 index 000000000000..45bddc0c1048 --- /dev/null +++ b/kernel/sched_stoptask.c @@ -0,0 +1,108 @@ +/* + * stop-task scheduling class. + * + * The stop task is the highest priority task in the system, it preempts + * everything and will be preempted by nothing. + * + * See kernel/stop_machine.c + */ + +#ifdef CONFIG_SMP +static int +select_task_rq_stop(struct rq *rq, struct task_struct *p, + int sd_flag, int flags) +{ + return task_cpu(p); /* stop tasks as never migrate */ +} +#endif /* CONFIG_SMP */ + +static void +check_preempt_curr_stop(struct rq *rq, struct task_struct *p, int flags) +{ + resched_task(rq->curr); /* we preempt everything */ +} + +static struct task_struct *pick_next_task_stop(struct rq *rq) +{ + struct task_struct *stop = rq->stop; + + if (stop && stop->state == TASK_RUNNING) + return stop; + + return NULL; +} + +static void +enqueue_task_stop(struct rq *rq, struct task_struct *p, int flags) +{ +} + +static void +dequeue_task_stop(struct rq *rq, struct task_struct *p, int flags) +{ +} + +static void yield_task_stop(struct rq *rq) +{ + BUG(); /* the stop task should never yield, its pointless. */ +} + +static void put_prev_task_stop(struct rq *rq, struct task_struct *prev) +{ +} + +static void task_tick_stop(struct rq *rq, struct task_struct *curr, int queued) +{ +} + +static void set_curr_task_stop(struct rq *rq) +{ +} + +static void switched_to_stop(struct rq *rq, struct task_struct *p, + int running) +{ + BUG(); /* its impossible to change to this class */ +} + +static void prio_changed_stop(struct rq *rq, struct task_struct *p, + int oldprio, int running) +{ + BUG(); /* how!?, what priority? */ +} + +static unsigned int +get_rr_interval_stop(struct rq *rq, struct task_struct *task) +{ + return 0; +} + +/* + * Simple, special scheduling class for the per-CPU stop tasks: + */ +static const struct sched_class stop_sched_class = { + .next = &rt_sched_class, + + .enqueue_task = enqueue_task_stop, + .dequeue_task = dequeue_task_stop, + .yield_task = yield_task_stop, + + .check_preempt_curr = check_preempt_curr_stop, + + .pick_next_task = pick_next_task_stop, + .put_prev_task = put_prev_task_stop, + +#ifdef CONFIG_SMP + .select_task_rq = select_task_rq_stop, +#endif + + .set_curr_task = set_curr_task_stop, + .task_tick = task_tick_stop, + + .get_rr_interval = get_rr_interval_stop, + + .prio_changed = prio_changed_stop, + .switched_to = switched_to_stop, + + /* no .task_new for stop tasks */ +}; diff --git a/kernel/softirq.c b/kernel/softirq.c index 07b4f1b1a73a..fc978889b194 100644 --- a/kernel/softirq.c +++ b/kernel/softirq.c @@ -77,11 +77,21 @@ void wakeup_softirqd(void) } /* + * preempt_count and SOFTIRQ_OFFSET usage: + * - preempt_count is changed by SOFTIRQ_OFFSET on entering or leaving + * softirq processing. + * - preempt_count is changed by SOFTIRQ_DISABLE_OFFSET (= 2 * SOFTIRQ_OFFSET) + * on local_bh_disable or local_bh_enable. + * This lets us distinguish between whether we are currently processing + * softirq and whether we just have bh disabled. + */ + +/* * This one is for softirq.c-internal use, * where hardirqs are disabled legitimately: */ #ifdef CONFIG_TRACE_IRQFLAGS -static void __local_bh_disable(unsigned long ip) +static void __local_bh_disable(unsigned long ip, unsigned int cnt) { unsigned long flags; @@ -95,32 +105,43 @@ static void __local_bh_disable(unsigned long ip) * We must manually increment preempt_count here and manually * call the trace_preempt_off later. */ - preempt_count() += SOFTIRQ_OFFSET; + preempt_count() += cnt; /* * Were softirqs turned off above: */ - if (softirq_count() == SOFTIRQ_OFFSET) + if (softirq_count() == cnt) trace_softirqs_off(ip); raw_local_irq_restore(flags); - if (preempt_count() == SOFTIRQ_OFFSET) + if (preempt_count() == cnt) trace_preempt_off(CALLER_ADDR0, get_parent_ip(CALLER_ADDR1)); } #else /* !CONFIG_TRACE_IRQFLAGS */ -static inline void __local_bh_disable(unsigned long ip) +static inline void __local_bh_disable(unsigned long ip, unsigned int cnt) { - add_preempt_count(SOFTIRQ_OFFSET); + add_preempt_count(cnt); barrier(); } #endif /* CONFIG_TRACE_IRQFLAGS */ void local_bh_disable(void) { - __local_bh_disable((unsigned long)__builtin_return_address(0)); + __local_bh_disable((unsigned long)__builtin_return_address(0), + SOFTIRQ_DISABLE_OFFSET); } EXPORT_SYMBOL(local_bh_disable); +static void __local_bh_enable(unsigned int cnt) +{ + WARN_ON_ONCE(in_irq()); + WARN_ON_ONCE(!irqs_disabled()); + + if (softirq_count() == cnt) + trace_softirqs_on((unsigned long)__builtin_return_address(0)); + sub_preempt_count(cnt); +} + /* * Special-case - softirqs can safely be enabled in * cond_resched_softirq(), or by __do_softirq(), @@ -128,12 +149,7 @@ EXPORT_SYMBOL(local_bh_disable); */ void _local_bh_enable(void) { - WARN_ON_ONCE(in_irq()); - WARN_ON_ONCE(!irqs_disabled()); - - if (softirq_count() == SOFTIRQ_OFFSET) - trace_softirqs_on((unsigned long)__builtin_return_address(0)); - sub_preempt_count(SOFTIRQ_OFFSET); + __local_bh_enable(SOFTIRQ_DISABLE_OFFSET); } EXPORT_SYMBOL(_local_bh_enable); @@ -147,13 +163,13 @@ static inline void _local_bh_enable_ip(unsigned long ip) /* * Are softirqs going to be turned on now: */ - if (softirq_count() == SOFTIRQ_OFFSET) + if (softirq_count() == SOFTIRQ_DISABLE_OFFSET) trace_softirqs_on(ip); /* * Keep preemption disabled until we are done with * softirq processing: */ - sub_preempt_count(SOFTIRQ_OFFSET - 1); + sub_preempt_count(SOFTIRQ_DISABLE_OFFSET - 1); if (unlikely(!in_interrupt() && local_softirq_pending())) do_softirq(); @@ -198,7 +214,8 @@ asmlinkage void __do_softirq(void) pending = local_softirq_pending(); account_system_vtime(current); - __local_bh_disable((unsigned long)__builtin_return_address(0)); + __local_bh_disable((unsigned long)__builtin_return_address(0), + SOFTIRQ_OFFSET); lockdep_softirq_enter(); cpu = smp_processor_id(); @@ -245,7 +262,7 @@ restart: lockdep_softirq_exit(); account_system_vtime(current); - _local_bh_enable(); + __local_bh_enable(SOFTIRQ_OFFSET); } #ifndef __ARCH_HAS_DO_SOFTIRQ @@ -279,10 +296,16 @@ void irq_enter(void) rcu_irq_enter(); if (idle_cpu(cpu) && !in_interrupt()) { - __irq_enter(); + /* + * Prevent raise_softirq from needlessly waking up ksoftirqd + * here, as softirq will be serviced on return from interrupt. + */ + local_bh_disable(); tick_check_idle(cpu); - } else - __irq_enter(); + _local_bh_enable(); + } + + __irq_enter(); } #ifdef __ARCH_IRQ_EXIT_IRQS_DISABLED @@ -696,6 +719,7 @@ static int run_ksoftirqd(void * __bind_cpu) { set_current_state(TASK_INTERRUPTIBLE); + current->flags |= PF_KSOFTIRQD; while (!kthread_should_stop()) { preempt_disable(); if (!local_softirq_pending()) { @@ -886,17 +910,14 @@ int __init __weak early_irq_init(void) return 0; } +#ifdef CONFIG_GENERIC_HARDIRQS int __init __weak arch_probe_nr_irqs(void) { - return 0; + return NR_IRQS_LEGACY; } int __init __weak arch_early_irq_init(void) { return 0; } - -int __weak arch_init_chip_data(struct irq_desc *desc, int node) -{ - return 0; -} +#endif diff --git a/kernel/srcu.c b/kernel/srcu.c index 2980da3fd509..c71e07500536 100644 --- a/kernel/srcu.c +++ b/kernel/srcu.c @@ -46,11 +46,9 @@ static int init_srcu_struct_fields(struct srcu_struct *sp) int __init_srcu_struct(struct srcu_struct *sp, const char *name, struct lock_class_key *key) { -#ifdef CONFIG_DEBUG_LOCK_ALLOC /* Don't re-initialize a lock while it is held. */ debug_check_no_locks_freed((void *)sp, sizeof(*sp)); lockdep_init_map(&sp->dep_map, name, key, 0); -#endif /* #ifdef CONFIG_DEBUG_LOCK_ALLOC */ return init_srcu_struct_fields(sp); } EXPORT_SYMBOL_GPL(__init_srcu_struct); diff --git a/kernel/stop_machine.c b/kernel/stop_machine.c index 4372ccb25127..090c28812ce1 100644 --- a/kernel/stop_machine.c +++ b/kernel/stop_machine.c @@ -287,11 +287,12 @@ repeat: goto repeat; } +extern void sched_set_stop_task(int cpu, struct task_struct *stop); + /* manage stopper for a cpu, mostly lifted from sched migration thread mgmt */ static int __cpuinit cpu_stop_cpu_callback(struct notifier_block *nfb, unsigned long action, void *hcpu) { - struct sched_param param = { .sched_priority = MAX_RT_PRIO - 1 }; unsigned int cpu = (unsigned long)hcpu; struct cpu_stopper *stopper = &per_cpu(cpu_stopper, cpu); struct task_struct *p; @@ -304,13 +305,13 @@ static int __cpuinit cpu_stop_cpu_callback(struct notifier_block *nfb, cpu); if (IS_ERR(p)) return NOTIFY_BAD; - sched_setscheduler_nocheck(p, SCHED_FIFO, ¶m); get_task_struct(p); + kthread_bind(p, cpu); + sched_set_stop_task(cpu, p); stopper->thread = p; break; case CPU_ONLINE: - kthread_bind(stopper->thread, cpu); /* strictly unnecessary, as first user will wake it */ wake_up_process(stopper->thread); /* mark enabled */ @@ -325,6 +326,7 @@ static int __cpuinit cpu_stop_cpu_callback(struct notifier_block *nfb, { struct cpu_stop_work *work; + sched_set_stop_task(cpu, NULL); /* kill the stopper */ kthread_stop(stopper->thread); /* drain remaining works */ diff --git a/kernel/sysctl_check.c b/kernel/sysctl_check.c index 04cdcf72c827..10b90d8a03c4 100644 --- a/kernel/sysctl_check.c +++ b/kernel/sysctl_check.c @@ -143,15 +143,6 @@ int sysctl_check_table(struct nsproxy *namespaces, struct ctl_table *table) if (!table->maxlen) set_fail(&fail, table, "No maxlen"); } - if ((table->proc_handler == proc_doulongvec_minmax) || - (table->proc_handler == proc_doulongvec_ms_jiffies_minmax)) { - if (table->maxlen > sizeof (unsigned long)) { - if (!table->extra1) - set_fail(&fail, table, "No min"); - if (!table->extra2) - set_fail(&fail, table, "No max"); - } - } #ifdef CONFIG_PROC_SYSCTL if (table->procname && !table->proc_handler) set_fail(&fail, table, "No proc_handler"); diff --git a/kernel/test_kprobes.c b/kernel/test_kprobes.c index 4f104515a19b..f8b11a283171 100644 --- a/kernel/test_kprobes.c +++ b/kernel/test_kprobes.c @@ -115,7 +115,9 @@ static int test_kprobes(void) int ret; struct kprobe *kps[2] = {&kp, &kp2}; - kp.addr = 0; /* addr should be cleard for reusing kprobe. */ + /* addr and flags should be cleard for reusing kprobe. */ + kp.addr = NULL; + kp.flags = 0; ret = register_kprobes(kps, 2); if (ret < 0) { printk(KERN_ERR "Kprobe smoke test failed: " @@ -210,7 +212,9 @@ static int test_jprobes(void) int ret; struct jprobe *jps[2] = {&jp, &jp2}; - jp.kp.addr = 0; /* addr should be cleard for reusing kprobe. */ + /* addr and flags should be cleard for reusing kprobe. */ + jp.kp.addr = NULL; + jp.kp.flags = 0; ret = register_jprobes(jps, 2); if (ret < 0) { printk(KERN_ERR "Kprobe smoke test failed: " @@ -323,7 +327,9 @@ static int test_kretprobes(void) int ret; struct kretprobe *rps[2] = {&rp, &rp2}; - rp.kp.addr = 0; /* addr should be cleard for reusing kprobe. */ + /* addr and flags should be cleard for reusing kprobe. */ + rp.kp.addr = NULL; + rp.kp.flags = 0; ret = register_kretprobes(rps, 2); if (ret < 0) { printk(KERN_ERR "Kprobe smoke test failed: " diff --git a/kernel/time/ntp.c b/kernel/time/ntp.c index c63116863a80..d2321891538f 100644 --- a/kernel/time/ntp.c +++ b/kernel/time/ntp.c @@ -149,10 +149,18 @@ static void ntp_update_offset(long offset) time_reftime = get_seconds(); offset64 = offset; - freq_adj = (offset64 * secs) << - (NTP_SCALE_SHIFT - 2 * (SHIFT_PLL + 2 + time_constant)); + freq_adj = ntp_update_offset_fll(offset64, secs); - freq_adj += ntp_update_offset_fll(offset64, secs); + /* + * Clamp update interval to reduce PLL gain with low + * sampling rate (e.g. intermittent network connection) + * to avoid instability. + */ + if (unlikely(secs > 1 << (SHIFT_PLL + 1 + time_constant))) + secs = 1 << (SHIFT_PLL + 1 + time_constant); + + freq_adj += (offset64 * secs) << + (NTP_SCALE_SHIFT - 2 * (SHIFT_PLL + 2 + time_constant)); freq_adj = min(freq_adj + time_freq, MAXFREQ_SCALED); diff --git a/kernel/timer.c b/kernel/timer.c index 97bf05baade7..68a9ae7679b7 100644 --- a/kernel/timer.c +++ b/kernel/timer.c @@ -37,7 +37,7 @@ #include <linux/delay.h> #include <linux/tick.h> #include <linux/kallsyms.h> -#include <linux/perf_event.h> +#include <linux/irq_work.h> #include <linux/sched.h> #include <linux/slab.h> @@ -1279,7 +1279,10 @@ void update_process_times(int user_tick) run_local_timers(); rcu_check_callbacks(cpu, user_tick); printk_tick(); - perf_event_do_pending(); +#ifdef CONFIG_IRQ_WORK + if (in_irq()) + irq_work_run(); +#endif scheduler_tick(); run_posix_cpu_timers(p); } diff --git a/kernel/trace/Kconfig b/kernel/trace/Kconfig index 6329d063b5e4..e04b8bcdef88 100644 --- a/kernel/trace/Kconfig +++ b/kernel/trace/Kconfig @@ -49,6 +49,11 @@ config HAVE_SYSCALL_TRACEPOINTS help See Documentation/trace/ftrace-design.txt +config HAVE_C_RECORDMCOUNT + bool + help + C version of recordmcount available? + config TRACER_MAX_TRACE bool diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c index fa7ece649fe1..ebd80d50c474 100644 --- a/kernel/trace/ftrace.c +++ b/kernel/trace/ftrace.c @@ -884,10 +884,8 @@ enum { FTRACE_ENABLE_CALLS = (1 << 0), FTRACE_DISABLE_CALLS = (1 << 1), FTRACE_UPDATE_TRACE_FUNC = (1 << 2), - FTRACE_ENABLE_MCOUNT = (1 << 3), - FTRACE_DISABLE_MCOUNT = (1 << 4), - FTRACE_START_FUNC_RET = (1 << 5), - FTRACE_STOP_FUNC_RET = (1 << 6), + FTRACE_START_FUNC_RET = (1 << 3), + FTRACE_STOP_FUNC_RET = (1 << 4), }; static int ftrace_filtered; @@ -1226,8 +1224,6 @@ static void ftrace_shutdown(int command) static void ftrace_startup_sysctl(void) { - int command = FTRACE_ENABLE_MCOUNT; - if (unlikely(ftrace_disabled)) return; @@ -1235,23 +1231,17 @@ static void ftrace_startup_sysctl(void) saved_ftrace_func = NULL; /* ftrace_start_up is true if we want ftrace running */ if (ftrace_start_up) - command |= FTRACE_ENABLE_CALLS; - - ftrace_run_update_code(command); + ftrace_run_update_code(FTRACE_ENABLE_CALLS); } static void ftrace_shutdown_sysctl(void) { - int command = FTRACE_DISABLE_MCOUNT; - if (unlikely(ftrace_disabled)) return; /* ftrace_start_up is true if ftrace is running */ if (ftrace_start_up) - command |= FTRACE_DISABLE_CALLS; - - ftrace_run_update_code(command); + ftrace_run_update_code(FTRACE_DISABLE_CALLS); } static cycle_t ftrace_update_time; @@ -1368,24 +1358,29 @@ enum { #define FTRACE_BUFF_MAX (KSYM_SYMBOL_LEN+4) /* room for wildcards */ struct ftrace_iterator { - struct ftrace_page *pg; - int hidx; - int idx; - unsigned flags; - struct trace_parser parser; + loff_t pos; + loff_t func_pos; + struct ftrace_page *pg; + struct dyn_ftrace *func; + struct ftrace_func_probe *probe; + struct trace_parser parser; + int hidx; + int idx; + unsigned flags; }; static void * -t_hash_next(struct seq_file *m, void *v, loff_t *pos) +t_hash_next(struct seq_file *m, loff_t *pos) { struct ftrace_iterator *iter = m->private; - struct hlist_node *hnd = v; + struct hlist_node *hnd = NULL; struct hlist_head *hhd; - WARN_ON(!(iter->flags & FTRACE_ITER_HASH)); - (*pos)++; + iter->pos = *pos; + if (iter->probe) + hnd = &iter->probe->node; retry: if (iter->hidx >= FTRACE_FUNC_HASHSIZE) return NULL; @@ -1408,7 +1403,12 @@ t_hash_next(struct seq_file *m, void *v, loff_t *pos) } } - return hnd; + if (WARN_ON_ONCE(!hnd)) + return NULL; + + iter->probe = hlist_entry(hnd, struct ftrace_func_probe, node); + + return iter; } static void *t_hash_start(struct seq_file *m, loff_t *pos) @@ -1417,26 +1417,32 @@ static void *t_hash_start(struct seq_file *m, loff_t *pos) void *p = NULL; loff_t l; - if (!(iter->flags & FTRACE_ITER_HASH)) - *pos = 0; - - iter->flags |= FTRACE_ITER_HASH; + if (iter->func_pos > *pos) + return NULL; iter->hidx = 0; - for (l = 0; l <= *pos; ) { - p = t_hash_next(m, p, &l); + for (l = 0; l <= (*pos - iter->func_pos); ) { + p = t_hash_next(m, &l); if (!p) break; } - return p; + if (!p) + return NULL; + + /* Only set this if we have an item */ + iter->flags |= FTRACE_ITER_HASH; + + return iter; } -static int t_hash_show(struct seq_file *m, void *v) +static int +t_hash_show(struct seq_file *m, struct ftrace_iterator *iter) { struct ftrace_func_probe *rec; - struct hlist_node *hnd = v; - rec = hlist_entry(hnd, struct ftrace_func_probe, node); + rec = iter->probe; + if (WARN_ON_ONCE(!rec)) + return -EIO; if (rec->ops->print) return rec->ops->print(m, rec->ip, rec->ops, rec->data); @@ -1457,12 +1463,13 @@ t_next(struct seq_file *m, void *v, loff_t *pos) struct dyn_ftrace *rec = NULL; if (iter->flags & FTRACE_ITER_HASH) - return t_hash_next(m, v, pos); + return t_hash_next(m, pos); (*pos)++; + iter->pos = *pos; if (iter->flags & FTRACE_ITER_PRINTALL) - return NULL; + return t_hash_start(m, pos); retry: if (iter->idx >= iter->pg->index) { @@ -1491,7 +1498,20 @@ t_next(struct seq_file *m, void *v, loff_t *pos) } } - return rec; + if (!rec) + return t_hash_start(m, pos); + + iter->func_pos = *pos; + iter->func = rec; + + return iter; +} + +static void reset_iter_read(struct ftrace_iterator *iter) +{ + iter->pos = 0; + iter->func_pos = 0; + iter->flags &= ~(FTRACE_ITER_PRINTALL & FTRACE_ITER_HASH); } static void *t_start(struct seq_file *m, loff_t *pos) @@ -1502,6 +1522,12 @@ static void *t_start(struct seq_file *m, loff_t *pos) mutex_lock(&ftrace_lock); /* + * If an lseek was done, then reset and start from beginning. + */ + if (*pos < iter->pos) + reset_iter_read(iter); + + /* * For set_ftrace_filter reading, if we have the filter * off, we can short cut and just print out that all * functions are enabled. @@ -1518,6 +1544,11 @@ static void *t_start(struct seq_file *m, loff_t *pos) if (iter->flags & FTRACE_ITER_HASH) return t_hash_start(m, pos); + /* + * Unfortunately, we need to restart at ftrace_pages_start + * every time we let go of the ftrace_mutex. This is because + * those pointers can change without the lock. + */ iter->pg = ftrace_pages_start; iter->idx = 0; for (l = 0; l <= *pos; ) { @@ -1526,10 +1557,14 @@ static void *t_start(struct seq_file *m, loff_t *pos) break; } - if (!p && iter->flags & FTRACE_ITER_FILTER) - return t_hash_start(m, pos); + if (!p) { + if (iter->flags & FTRACE_ITER_FILTER) + return t_hash_start(m, pos); - return p; + return NULL; + } + + return iter; } static void t_stop(struct seq_file *m, void *p) @@ -1540,16 +1575,18 @@ static void t_stop(struct seq_file *m, void *p) static int t_show(struct seq_file *m, void *v) { struct ftrace_iterator *iter = m->private; - struct dyn_ftrace *rec = v; + struct dyn_ftrace *rec; if (iter->flags & FTRACE_ITER_HASH) - return t_hash_show(m, v); + return t_hash_show(m, iter); if (iter->flags & FTRACE_ITER_PRINTALL) { seq_printf(m, "#### all functions enabled ####\n"); return 0; } + rec = iter->func; + if (!rec) return 0; @@ -1601,8 +1638,8 @@ ftrace_failures_open(struct inode *inode, struct file *file) ret = ftrace_avail_open(inode, file); if (!ret) { - m = (struct seq_file *)file->private_data; - iter = (struct ftrace_iterator *)m->private; + m = file->private_data; + iter = m->private; iter->flags = FTRACE_ITER_FAILURES; } @@ -2418,7 +2455,7 @@ static const struct file_operations ftrace_filter_fops = { .open = ftrace_filter_open, .read = seq_read, .write = ftrace_filter_write, - .llseek = no_llseek, + .llseek = ftrace_regex_lseek, .release = ftrace_filter_release, }; diff --git a/kernel/trace/ring_buffer.c b/kernel/trace/ring_buffer.c index bca96377fd4e..c5a632a669e1 100644 --- a/kernel/trace/ring_buffer.c +++ b/kernel/trace/ring_buffer.c @@ -2606,6 +2606,19 @@ void ring_buffer_record_enable_cpu(struct ring_buffer *buffer, int cpu) } EXPORT_SYMBOL_GPL(ring_buffer_record_enable_cpu); +/* + * The total entries in the ring buffer is the running counter + * of entries entered into the ring buffer, minus the sum of + * the entries read from the ring buffer and the number of + * entries that were overwritten. + */ +static inline unsigned long +rb_num_of_entries(struct ring_buffer_per_cpu *cpu_buffer) +{ + return local_read(&cpu_buffer->entries) - + (local_read(&cpu_buffer->overrun) + cpu_buffer->read); +} + /** * ring_buffer_entries_cpu - get the number of entries in a cpu buffer * @buffer: The ring buffer @@ -2614,16 +2627,13 @@ EXPORT_SYMBOL_GPL(ring_buffer_record_enable_cpu); unsigned long ring_buffer_entries_cpu(struct ring_buffer *buffer, int cpu) { struct ring_buffer_per_cpu *cpu_buffer; - unsigned long ret; if (!cpumask_test_cpu(cpu, buffer->cpumask)) return 0; cpu_buffer = buffer->buffers[cpu]; - ret = (local_read(&cpu_buffer->entries) - local_read(&cpu_buffer->overrun)) - - cpu_buffer->read; - return ret; + return rb_num_of_entries(cpu_buffer); } EXPORT_SYMBOL_GPL(ring_buffer_entries_cpu); @@ -2684,8 +2694,7 @@ unsigned long ring_buffer_entries(struct ring_buffer *buffer) /* if you care about this being correct, lock the buffer */ for_each_buffer_cpu(buffer, cpu) { cpu_buffer = buffer->buffers[cpu]; - entries += (local_read(&cpu_buffer->entries) - - local_read(&cpu_buffer->overrun)) - cpu_buffer->read; + entries += rb_num_of_entries(cpu_buffer); } return entries; diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c index 9ec59f541156..001bcd2ccf4a 100644 --- a/kernel/trace/trace.c +++ b/kernel/trace/trace.c @@ -2196,7 +2196,7 @@ int tracing_open_generic(struct inode *inode, struct file *filp) static int tracing_release(struct inode *inode, struct file *file) { - struct seq_file *m = (struct seq_file *)file->private_data; + struct seq_file *m = file->private_data; struct trace_iterator *iter; int cpu; diff --git a/kernel/trace/trace.h b/kernel/trace/trace.h index d39b3c5454a5..9021f8c0c0c3 100644 --- a/kernel/trace/trace.h +++ b/kernel/trace/trace.h @@ -343,6 +343,10 @@ void trace_function(struct trace_array *tr, unsigned long ip, unsigned long parent_ip, unsigned long flags, int pc); +void trace_graph_function(struct trace_array *tr, + unsigned long ip, + unsigned long parent_ip, + unsigned long flags, int pc); void trace_default_header(struct seq_file *m); void print_trace_header(struct seq_file *m, struct trace_iterator *iter); int trace_empty(struct trace_iterator *iter); diff --git a/kernel/trace/trace_event_perf.c b/kernel/trace/trace_event_perf.c index 31cc4cb0dbf2..39c059ca670e 100644 --- a/kernel/trace/trace_event_perf.c +++ b/kernel/trace/trace_event_perf.c @@ -9,7 +9,7 @@ #include <linux/kprobes.h> #include "trace.h" -static char *perf_trace_buf[4]; +static char __percpu *perf_trace_buf[PERF_NR_CONTEXTS]; /* * Force it to be aligned to unsigned long to avoid misaligned accesses @@ -24,7 +24,7 @@ static int total_ref_count; static int perf_trace_event_init(struct ftrace_event_call *tp_event, struct perf_event *p_event) { - struct hlist_head *list; + struct hlist_head __percpu *list; int ret = -ENOMEM; int cpu; @@ -42,11 +42,11 @@ static int perf_trace_event_init(struct ftrace_event_call *tp_event, tp_event->perf_events = list; if (!total_ref_count) { - char *buf; + char __percpu *buf; int i; - for (i = 0; i < 4; i++) { - buf = (char *)alloc_percpu(perf_trace_t); + for (i = 0; i < PERF_NR_CONTEXTS; i++) { + buf = (char __percpu *)alloc_percpu(perf_trace_t); if (!buf) goto fail; @@ -65,7 +65,7 @@ fail: if (!total_ref_count) { int i; - for (i = 0; i < 4; i++) { + for (i = 0; i < PERF_NR_CONTEXTS; i++) { free_percpu(perf_trace_buf[i]); perf_trace_buf[i] = NULL; } @@ -101,22 +101,26 @@ int perf_trace_init(struct perf_event *p_event) return ret; } -int perf_trace_enable(struct perf_event *p_event) +int perf_trace_add(struct perf_event *p_event, int flags) { struct ftrace_event_call *tp_event = p_event->tp_event; + struct hlist_head __percpu *pcpu_list; struct hlist_head *list; - list = tp_event->perf_events; - if (WARN_ON_ONCE(!list)) + pcpu_list = tp_event->perf_events; + if (WARN_ON_ONCE(!pcpu_list)) return -EINVAL; - list = this_cpu_ptr(list); + if (!(flags & PERF_EF_START)) + p_event->hw.state = PERF_HES_STOPPED; + + list = this_cpu_ptr(pcpu_list); hlist_add_head_rcu(&p_event->hlist_entry, list); return 0; } -void perf_trace_disable(struct perf_event *p_event) +void perf_trace_del(struct perf_event *p_event, int flags) { hlist_del_rcu(&p_event->hlist_entry); } @@ -142,7 +146,7 @@ void perf_trace_destroy(struct perf_event *p_event) tp_event->perf_events = NULL; if (!--total_ref_count) { - for (i = 0; i < 4; i++) { + for (i = 0; i < PERF_NR_CONTEXTS; i++) { free_percpu(perf_trace_buf[i]); perf_trace_buf[i] = NULL; } diff --git a/kernel/trace/trace_events.c b/kernel/trace/trace_events.c index 4c758f146328..398c0e8b332c 100644 --- a/kernel/trace/trace_events.c +++ b/kernel/trace/trace_events.c @@ -600,21 +600,29 @@ out: enum { FORMAT_HEADER = 1, - FORMAT_PRINTFMT = 2, + FORMAT_FIELD_SEPERATOR = 2, + FORMAT_PRINTFMT = 3, }; static void *f_next(struct seq_file *m, void *v, loff_t *pos) { struct ftrace_event_call *call = m->private; struct ftrace_event_field *field; - struct list_head *head; + struct list_head *common_head = &ftrace_common_fields; + struct list_head *head = trace_get_fields(call); (*pos)++; switch ((unsigned long)v) { case FORMAT_HEADER: - head = &ftrace_common_fields; + if (unlikely(list_empty(common_head))) + return NULL; + + field = list_entry(common_head->prev, + struct ftrace_event_field, link); + return field; + case FORMAT_FIELD_SEPERATOR: if (unlikely(list_empty(head))) return NULL; @@ -626,31 +634,10 @@ static void *f_next(struct seq_file *m, void *v, loff_t *pos) return NULL; } - head = trace_get_fields(call); - - /* - * To separate common fields from event fields, the - * LSB is set on the first event field. Clear it in case. - */ - v = (void *)((unsigned long)v & ~1L); - field = v; - /* - * If this is a common field, and at the end of the list, then - * continue with main list. - */ - if (field->link.prev == &ftrace_common_fields) { - if (unlikely(list_empty(head))) - return NULL; - field = list_entry(head->prev, struct ftrace_event_field, link); - /* Set the LSB to notify f_show to print an extra newline */ - field = (struct ftrace_event_field *) - ((unsigned long)field | 1); - return field; - } - - /* If we are done tell f_show to print the format */ - if (field->link.prev == head) + if (field->link.prev == common_head) + return (void *)FORMAT_FIELD_SEPERATOR; + else if (field->link.prev == head) return (void *)FORMAT_PRINTFMT; field = list_entry(field->link.prev, struct ftrace_event_field, link); @@ -688,22 +675,16 @@ static int f_show(struct seq_file *m, void *v) seq_printf(m, "format:\n"); return 0; + case FORMAT_FIELD_SEPERATOR: + seq_putc(m, '\n'); + return 0; + case FORMAT_PRINTFMT: seq_printf(m, "\nprint fmt: %s\n", call->print_fmt); return 0; } - /* - * To separate common fields from event fields, the - * LSB is set on the first event field. Clear it and - * print a newline if it is set. - */ - if ((unsigned long)v & 1) { - seq_putc(m, '\n'); - v = (void *)((unsigned long)v & ~1L); - } - field = v; /* diff --git a/kernel/trace/trace_functions_graph.c b/kernel/trace/trace_functions_graph.c index 6f233698518e..76b05980225c 100644 --- a/kernel/trace/trace_functions_graph.c +++ b/kernel/trace/trace_functions_graph.c @@ -15,15 +15,19 @@ #include "trace.h" #include "trace_output.h" +/* When set, irq functions will be ignored */ +static int ftrace_graph_skip_irqs; + struct fgraph_cpu_data { pid_t last_pid; int depth; + int depth_irq; int ignore; unsigned long enter_funcs[FTRACE_RETFUNC_DEPTH]; }; struct fgraph_data { - struct fgraph_cpu_data *cpu_data; + struct fgraph_cpu_data __percpu *cpu_data; /* Place to preserve last processed entry. */ struct ftrace_graph_ent_entry ent; @@ -41,6 +45,7 @@ struct fgraph_data { #define TRACE_GRAPH_PRINT_PROC 0x8 #define TRACE_GRAPH_PRINT_DURATION 0x10 #define TRACE_GRAPH_PRINT_ABS_TIME 0x20 +#define TRACE_GRAPH_PRINT_IRQS 0x40 static struct tracer_opt trace_opts[] = { /* Display overruns? (for self-debug purpose) */ @@ -55,13 +60,15 @@ static struct tracer_opt trace_opts[] = { { TRACER_OPT(funcgraph-duration, TRACE_GRAPH_PRINT_DURATION) }, /* Display absolute time of an entry */ { TRACER_OPT(funcgraph-abstime, TRACE_GRAPH_PRINT_ABS_TIME) }, + /* Display interrupts */ + { TRACER_OPT(funcgraph-irqs, TRACE_GRAPH_PRINT_IRQS) }, { } /* Empty entry */ }; static struct tracer_flags tracer_flags = { /* Don't display overruns and proc by default */ .val = TRACE_GRAPH_PRINT_CPU | TRACE_GRAPH_PRINT_OVERHEAD | - TRACE_GRAPH_PRINT_DURATION, + TRACE_GRAPH_PRINT_DURATION | TRACE_GRAPH_PRINT_IRQS, .opts = trace_opts }; @@ -204,6 +211,14 @@ int __trace_graph_entry(struct trace_array *tr, return 1; } +static inline int ftrace_graph_ignore_irqs(void) +{ + if (!ftrace_graph_skip_irqs) + return 0; + + return in_irq(); +} + int trace_graph_entry(struct ftrace_graph_ent *trace) { struct trace_array *tr = graph_array; @@ -218,7 +233,8 @@ int trace_graph_entry(struct ftrace_graph_ent *trace) return 0; /* trace it when it is-nested-in or is a function enabled. */ - if (!(trace->depth || ftrace_graph_addr(trace->func))) + if (!(trace->depth || ftrace_graph_addr(trace->func)) || + ftrace_graph_ignore_irqs()) return 0; local_irq_save(flags); @@ -246,6 +262,34 @@ int trace_graph_thresh_entry(struct ftrace_graph_ent *trace) return trace_graph_entry(trace); } +static void +__trace_graph_function(struct trace_array *tr, + unsigned long ip, unsigned long flags, int pc) +{ + u64 time = trace_clock_local(); + struct ftrace_graph_ent ent = { + .func = ip, + .depth = 0, + }; + struct ftrace_graph_ret ret = { + .func = ip, + .depth = 0, + .calltime = time, + .rettime = time, + }; + + __trace_graph_entry(tr, &ent, flags, pc); + __trace_graph_return(tr, &ret, flags, pc); +} + +void +trace_graph_function(struct trace_array *tr, + unsigned long ip, unsigned long parent_ip, + unsigned long flags, int pc) +{ + __trace_graph_function(tr, ip, flags, pc); +} + void __trace_graph_return(struct trace_array *tr, struct ftrace_graph_ret *trace, unsigned long flags, @@ -649,8 +693,9 @@ trace_print_graph_duration(unsigned long long duration, struct trace_seq *s) /* Print nsecs (we don't want to exceed 7 numbers) */ if (len < 7) { - snprintf(nsecs_str, min(sizeof(nsecs_str), 8UL - len), "%03lu", - nsecs_rem); + size_t slen = min_t(size_t, sizeof(nsecs_str), 8UL - len); + + snprintf(nsecs_str, slen, "%03lu", nsecs_rem); ret = trace_seq_printf(s, ".%s", nsecs_str); if (!ret) return TRACE_TYPE_PARTIAL_LINE; @@ -855,6 +900,108 @@ print_graph_prologue(struct trace_iterator *iter, struct trace_seq *s, return 0; } +/* + * Entry check for irq code + * + * returns 1 if + * - we are inside irq code + * - we just extered irq code + * + * retunns 0 if + * - funcgraph-interrupts option is set + * - we are not inside irq code + */ +static int +check_irq_entry(struct trace_iterator *iter, u32 flags, + unsigned long addr, int depth) +{ + int cpu = iter->cpu; + int *depth_irq; + struct fgraph_data *data = iter->private; + + /* + * If we are either displaying irqs, or we got called as + * a graph event and private data does not exist, + * then we bypass the irq check. + */ + if ((flags & TRACE_GRAPH_PRINT_IRQS) || + (!data)) + return 0; + + depth_irq = &(per_cpu_ptr(data->cpu_data, cpu)->depth_irq); + + /* + * We are inside the irq code + */ + if (*depth_irq >= 0) + return 1; + + if ((addr < (unsigned long)__irqentry_text_start) || + (addr >= (unsigned long)__irqentry_text_end)) + return 0; + + /* + * We are entering irq code. + */ + *depth_irq = depth; + return 1; +} + +/* + * Return check for irq code + * + * returns 1 if + * - we are inside irq code + * - we just left irq code + * + * returns 0 if + * - funcgraph-interrupts option is set + * - we are not inside irq code + */ +static int +check_irq_return(struct trace_iterator *iter, u32 flags, int depth) +{ + int cpu = iter->cpu; + int *depth_irq; + struct fgraph_data *data = iter->private; + + /* + * If we are either displaying irqs, or we got called as + * a graph event and private data does not exist, + * then we bypass the irq check. + */ + if ((flags & TRACE_GRAPH_PRINT_IRQS) || + (!data)) + return 0; + + depth_irq = &(per_cpu_ptr(data->cpu_data, cpu)->depth_irq); + + /* + * We are not inside the irq code. + */ + if (*depth_irq == -1) + return 0; + + /* + * We are inside the irq code, and this is returning entry. + * Let's not trace it and clear the entry depth, since + * we are out of irq code. + * + * This condition ensures that we 'leave the irq code' once + * we are out of the entry depth. Thus protecting us from + * the RETURN entry loss. + */ + if (*depth_irq >= depth) { + *depth_irq = -1; + return 1; + } + + /* + * We are inside the irq code, and this is not the entry. + */ + return 1; +} + static enum print_line_t print_graph_entry(struct ftrace_graph_ent_entry *field, struct trace_seq *s, struct trace_iterator *iter, u32 flags) @@ -865,6 +1012,9 @@ print_graph_entry(struct ftrace_graph_ent_entry *field, struct trace_seq *s, static enum print_line_t ret; int cpu = iter->cpu; + if (check_irq_entry(iter, flags, call->func, call->depth)) + return TRACE_TYPE_HANDLED; + if (print_graph_prologue(iter, s, TRACE_GRAPH_ENT, call->func, flags)) return TRACE_TYPE_PARTIAL_LINE; @@ -902,6 +1052,9 @@ print_graph_return(struct ftrace_graph_ret *trace, struct trace_seq *s, int ret; int i; + if (check_irq_return(iter, flags, trace->depth)) + return TRACE_TYPE_HANDLED; + if (data) { struct fgraph_cpu_data *cpu_data; int cpu = iter->cpu; @@ -1054,7 +1207,7 @@ print_graph_comment(struct trace_seq *s, struct trace_entry *ent, enum print_line_t -print_graph_function_flags(struct trace_iterator *iter, u32 flags) +__print_graph_function_flags(struct trace_iterator *iter, u32 flags) { struct ftrace_graph_ent_entry *field; struct fgraph_data *data = iter->private; @@ -1117,7 +1270,18 @@ print_graph_function_flags(struct trace_iterator *iter, u32 flags) static enum print_line_t print_graph_function(struct trace_iterator *iter) { - return print_graph_function_flags(iter, tracer_flags.val); + return __print_graph_function_flags(iter, tracer_flags.val); +} + +enum print_line_t print_graph_function_flags(struct trace_iterator *iter, + u32 flags) +{ + if (trace_flags & TRACE_ITER_LATENCY_FMT) + flags |= TRACE_GRAPH_PRINT_DURATION; + else + flags |= TRACE_GRAPH_PRINT_ABS_TIME; + + return __print_graph_function_flags(iter, flags); } static enum print_line_t @@ -1149,7 +1313,7 @@ static void print_lat_header(struct seq_file *s, u32 flags) seq_printf(s, "#%.*s|||| / \n", size, spaces); } -void print_graph_headers_flags(struct seq_file *s, u32 flags) +static void __print_graph_headers_flags(struct seq_file *s, u32 flags) { int lat = trace_flags & TRACE_ITER_LATENCY_FMT; @@ -1190,6 +1354,23 @@ void print_graph_headers(struct seq_file *s) print_graph_headers_flags(s, tracer_flags.val); } +void print_graph_headers_flags(struct seq_file *s, u32 flags) +{ + struct trace_iterator *iter = s->private; + + if (trace_flags & TRACE_ITER_LATENCY_FMT) { + /* print nothing if the buffers are empty */ + if (trace_empty(iter)) + return; + + print_trace_header(s, iter); + flags |= TRACE_GRAPH_PRINT_DURATION; + } else + flags |= TRACE_GRAPH_PRINT_ABS_TIME; + + __print_graph_headers_flags(s, flags); +} + void graph_trace_open(struct trace_iterator *iter) { /* pid and depth on the last trace processed */ @@ -1210,9 +1391,12 @@ void graph_trace_open(struct trace_iterator *iter) pid_t *pid = &(per_cpu_ptr(data->cpu_data, cpu)->last_pid); int *depth = &(per_cpu_ptr(data->cpu_data, cpu)->depth); int *ignore = &(per_cpu_ptr(data->cpu_data, cpu)->ignore); + int *depth_irq = &(per_cpu_ptr(data->cpu_data, cpu)->depth_irq); + *pid = -1; *depth = 0; *ignore = 0; + *depth_irq = -1; } iter->private = data; @@ -1235,6 +1419,14 @@ void graph_trace_close(struct trace_iterator *iter) } } +static int func_graph_set_flag(u32 old_flags, u32 bit, int set) +{ + if (bit == TRACE_GRAPH_PRINT_IRQS) + ftrace_graph_skip_irqs = !set; + + return 0; +} + static struct trace_event_functions graph_functions = { .trace = print_graph_function_event, }; @@ -1261,6 +1453,7 @@ static struct tracer graph_trace __read_mostly = { .print_line = print_graph_function, .print_header = print_graph_headers, .flags = &tracer_flags, + .set_flag = func_graph_set_flag, #ifdef CONFIG_FTRACE_SELFTEST .selftest = trace_selftest_startup_function_graph, #endif diff --git a/kernel/trace/trace_irqsoff.c b/kernel/trace/trace_irqsoff.c index 73a6b0601f2e..5cf8c602b880 100644 --- a/kernel/trace/trace_irqsoff.c +++ b/kernel/trace/trace_irqsoff.c @@ -87,14 +87,22 @@ static __cacheline_aligned_in_smp unsigned long max_sequence; #ifdef CONFIG_FUNCTION_TRACER /* - * irqsoff uses its own tracer function to keep the overhead down: + * Prologue for the preempt and irqs off function tracers. + * + * Returns 1 if it is OK to continue, and data->disabled is + * incremented. + * 0 if the trace is to be ignored, and data->disabled + * is kept the same. + * + * Note, this function is also used outside this ifdef but + * inside the #ifdef of the function graph tracer below. + * This is OK, since the function graph tracer is + * dependent on the function tracer. */ -static void -irqsoff_tracer_call(unsigned long ip, unsigned long parent_ip) +static int func_prolog_dec(struct trace_array *tr, + struct trace_array_cpu **data, + unsigned long *flags) { - struct trace_array *tr = irqsoff_trace; - struct trace_array_cpu *data; - unsigned long flags; long disabled; int cpu; @@ -106,18 +114,38 @@ irqsoff_tracer_call(unsigned long ip, unsigned long parent_ip) */ cpu = raw_smp_processor_id(); if (likely(!per_cpu(tracing_cpu, cpu))) - return; + return 0; - local_save_flags(flags); + local_save_flags(*flags); /* slight chance to get a false positive on tracing_cpu */ - if (!irqs_disabled_flags(flags)) - return; + if (!irqs_disabled_flags(*flags)) + return 0; - data = tr->data[cpu]; - disabled = atomic_inc_return(&data->disabled); + *data = tr->data[cpu]; + disabled = atomic_inc_return(&(*data)->disabled); if (likely(disabled == 1)) - trace_function(tr, ip, parent_ip, flags, preempt_count()); + return 1; + + atomic_dec(&(*data)->disabled); + + return 0; +} + +/* + * irqsoff uses its own tracer function to keep the overhead down: + */ +static void +irqsoff_tracer_call(unsigned long ip, unsigned long parent_ip) +{ + struct trace_array *tr = irqsoff_trace; + struct trace_array_cpu *data; + unsigned long flags; + + if (!func_prolog_dec(tr, &data, &flags)) + return; + + trace_function(tr, ip, parent_ip, flags, preempt_count()); atomic_dec(&data->disabled); } @@ -155,30 +183,16 @@ static int irqsoff_graph_entry(struct ftrace_graph_ent *trace) struct trace_array *tr = irqsoff_trace; struct trace_array_cpu *data; unsigned long flags; - long disabled; int ret; - int cpu; int pc; - cpu = raw_smp_processor_id(); - if (likely(!per_cpu(tracing_cpu, cpu))) + if (!func_prolog_dec(tr, &data, &flags)) return 0; - local_save_flags(flags); - /* slight chance to get a false positive on tracing_cpu */ - if (!irqs_disabled_flags(flags)) - return 0; - - data = tr->data[cpu]; - disabled = atomic_inc_return(&data->disabled); - - if (likely(disabled == 1)) { - pc = preempt_count(); - ret = __trace_graph_entry(tr, trace, flags, pc); - } else - ret = 0; - + pc = preempt_count(); + ret = __trace_graph_entry(tr, trace, flags, pc); atomic_dec(&data->disabled); + return ret; } @@ -187,27 +201,13 @@ static void irqsoff_graph_return(struct ftrace_graph_ret *trace) struct trace_array *tr = irqsoff_trace; struct trace_array_cpu *data; unsigned long flags; - long disabled; - int cpu; int pc; - cpu = raw_smp_processor_id(); - if (likely(!per_cpu(tracing_cpu, cpu))) + if (!func_prolog_dec(tr, &data, &flags)) return; - local_save_flags(flags); - /* slight chance to get a false positive on tracing_cpu */ - if (!irqs_disabled_flags(flags)) - return; - - data = tr->data[cpu]; - disabled = atomic_inc_return(&data->disabled); - - if (likely(disabled == 1)) { - pc = preempt_count(); - __trace_graph_return(tr, trace, flags, pc); - } - + pc = preempt_count(); + __trace_graph_return(tr, trace, flags, pc); atomic_dec(&data->disabled); } @@ -229,75 +229,33 @@ static void irqsoff_trace_close(struct trace_iterator *iter) static enum print_line_t irqsoff_print_line(struct trace_iterator *iter) { - u32 flags = GRAPH_TRACER_FLAGS; - - if (trace_flags & TRACE_ITER_LATENCY_FMT) - flags |= TRACE_GRAPH_PRINT_DURATION; - else - flags |= TRACE_GRAPH_PRINT_ABS_TIME; - /* * In graph mode call the graph tracer output function, * otherwise go with the TRACE_FN event handler */ if (is_graph()) - return print_graph_function_flags(iter, flags); + return print_graph_function_flags(iter, GRAPH_TRACER_FLAGS); return TRACE_TYPE_UNHANDLED; } static void irqsoff_print_header(struct seq_file *s) { - if (is_graph()) { - struct trace_iterator *iter = s->private; - u32 flags = GRAPH_TRACER_FLAGS; - - if (trace_flags & TRACE_ITER_LATENCY_FMT) { - /* print nothing if the buffers are empty */ - if (trace_empty(iter)) - return; - - print_trace_header(s, iter); - flags |= TRACE_GRAPH_PRINT_DURATION; - } else - flags |= TRACE_GRAPH_PRINT_ABS_TIME; - - print_graph_headers_flags(s, flags); - } else + if (is_graph()) + print_graph_headers_flags(s, GRAPH_TRACER_FLAGS); + else trace_default_header(s); } static void -trace_graph_function(struct trace_array *tr, - unsigned long ip, unsigned long flags, int pc) -{ - u64 time = trace_clock_local(); - struct ftrace_graph_ent ent = { - .func = ip, - .depth = 0, - }; - struct ftrace_graph_ret ret = { - .func = ip, - .depth = 0, - .calltime = time, - .rettime = time, - }; - - __trace_graph_entry(tr, &ent, flags, pc); - __trace_graph_return(tr, &ret, flags, pc); -} - -static void __trace_function(struct trace_array *tr, unsigned long ip, unsigned long parent_ip, unsigned long flags, int pc) { - if (!is_graph()) + if (is_graph()) + trace_graph_function(tr, ip, parent_ip, flags, pc); + else trace_function(tr, ip, parent_ip, flags, pc); - else { - trace_graph_function(tr, parent_ip, flags, pc); - trace_graph_function(tr, ip, flags, pc); - } } #else diff --git a/kernel/trace/trace_sched_wakeup.c b/kernel/trace/trace_sched_wakeup.c index 4086eae6e81b..7319559ed59f 100644 --- a/kernel/trace/trace_sched_wakeup.c +++ b/kernel/trace/trace_sched_wakeup.c @@ -31,48 +31,98 @@ static int wakeup_rt; static arch_spinlock_t wakeup_lock = (arch_spinlock_t)__ARCH_SPIN_LOCK_UNLOCKED; +static void wakeup_reset(struct trace_array *tr); static void __wakeup_reset(struct trace_array *tr); +static int wakeup_graph_entry(struct ftrace_graph_ent *trace); +static void wakeup_graph_return(struct ftrace_graph_ret *trace); static int save_lat_flag; +#define TRACE_DISPLAY_GRAPH 1 + +static struct tracer_opt trace_opts[] = { +#ifdef CONFIG_FUNCTION_GRAPH_TRACER + /* display latency trace as call graph */ + { TRACER_OPT(display-graph, TRACE_DISPLAY_GRAPH) }, +#endif + { } /* Empty entry */ +}; + +static struct tracer_flags tracer_flags = { + .val = 0, + .opts = trace_opts, +}; + +#define is_graph() (tracer_flags.val & TRACE_DISPLAY_GRAPH) + #ifdef CONFIG_FUNCTION_TRACER + /* - * irqsoff uses its own tracer function to keep the overhead down: + * Prologue for the wakeup function tracers. + * + * Returns 1 if it is OK to continue, and preemption + * is disabled and data->disabled is incremented. + * 0 if the trace is to be ignored, and preemption + * is not disabled and data->disabled is + * kept the same. + * + * Note, this function is also used outside this ifdef but + * inside the #ifdef of the function graph tracer below. + * This is OK, since the function graph tracer is + * dependent on the function tracer. */ -static void -wakeup_tracer_call(unsigned long ip, unsigned long parent_ip) +static int +func_prolog_preempt_disable(struct trace_array *tr, + struct trace_array_cpu **data, + int *pc) { - struct trace_array *tr = wakeup_trace; - struct trace_array_cpu *data; - unsigned long flags; long disabled; int cpu; - int pc; if (likely(!wakeup_task)) - return; + return 0; - pc = preempt_count(); + *pc = preempt_count(); preempt_disable_notrace(); cpu = raw_smp_processor_id(); if (cpu != wakeup_current_cpu) goto out_enable; - data = tr->data[cpu]; - disabled = atomic_inc_return(&data->disabled); + *data = tr->data[cpu]; + disabled = atomic_inc_return(&(*data)->disabled); if (unlikely(disabled != 1)) goto out; - local_irq_save(flags); + return 1; - trace_function(tr, ip, parent_ip, flags, pc); +out: + atomic_dec(&(*data)->disabled); + +out_enable: + preempt_enable_notrace(); + return 0; +} +/* + * wakeup uses its own tracer function to keep the overhead down: + */ +static void +wakeup_tracer_call(unsigned long ip, unsigned long parent_ip) +{ + struct trace_array *tr = wakeup_trace; + struct trace_array_cpu *data; + unsigned long flags; + int pc; + + if (!func_prolog_preempt_disable(tr, &data, &pc)) + return; + + local_irq_save(flags); + trace_function(tr, ip, parent_ip, flags, pc); local_irq_restore(flags); - out: atomic_dec(&data->disabled); - out_enable: preempt_enable_notrace(); } @@ -82,6 +132,156 @@ static struct ftrace_ops trace_ops __read_mostly = }; #endif /* CONFIG_FUNCTION_TRACER */ +static int start_func_tracer(int graph) +{ + int ret; + + if (!graph) + ret = register_ftrace_function(&trace_ops); + else + ret = register_ftrace_graph(&wakeup_graph_return, + &wakeup_graph_entry); + + if (!ret && tracing_is_enabled()) + tracer_enabled = 1; + else + tracer_enabled = 0; + + return ret; +} + +static void stop_func_tracer(int graph) +{ + tracer_enabled = 0; + + if (!graph) + unregister_ftrace_function(&trace_ops); + else + unregister_ftrace_graph(); +} + +#ifdef CONFIG_FUNCTION_GRAPH_TRACER +static int wakeup_set_flag(u32 old_flags, u32 bit, int set) +{ + + if (!(bit & TRACE_DISPLAY_GRAPH)) + return -EINVAL; + + if (!(is_graph() ^ set)) + return 0; + + stop_func_tracer(!set); + + wakeup_reset(wakeup_trace); + tracing_max_latency = 0; + + return start_func_tracer(set); +} + +static int wakeup_graph_entry(struct ftrace_graph_ent *trace) +{ + struct trace_array *tr = wakeup_trace; + struct trace_array_cpu *data; + unsigned long flags; + int pc, ret = 0; + + if (!func_prolog_preempt_disable(tr, &data, &pc)) + return 0; + + local_save_flags(flags); + ret = __trace_graph_entry(tr, trace, flags, pc); + atomic_dec(&data->disabled); + preempt_enable_notrace(); + + return ret; +} + +static void wakeup_graph_return(struct ftrace_graph_ret *trace) +{ + struct trace_array *tr = wakeup_trace; + struct trace_array_cpu *data; + unsigned long flags; + int pc; + + if (!func_prolog_preempt_disable(tr, &data, &pc)) + return; + + local_save_flags(flags); + __trace_graph_return(tr, trace, flags, pc); + atomic_dec(&data->disabled); + + preempt_enable_notrace(); + return; +} + +static void wakeup_trace_open(struct trace_iterator *iter) +{ + if (is_graph()) + graph_trace_open(iter); +} + +static void wakeup_trace_close(struct trace_iterator *iter) +{ + if (iter->private) + graph_trace_close(iter); +} + +#define GRAPH_TRACER_FLAGS (TRACE_GRAPH_PRINT_PROC) + +static enum print_line_t wakeup_print_line(struct trace_iterator *iter) +{ + /* + * In graph mode call the graph tracer output function, + * otherwise go with the TRACE_FN event handler + */ + if (is_graph()) + return print_graph_function_flags(iter, GRAPH_TRACER_FLAGS); + + return TRACE_TYPE_UNHANDLED; +} + +static void wakeup_print_header(struct seq_file *s) +{ + if (is_graph()) + print_graph_headers_flags(s, GRAPH_TRACER_FLAGS); + else + trace_default_header(s); +} + +static void +__trace_function(struct trace_array *tr, + unsigned long ip, unsigned long parent_ip, + unsigned long flags, int pc) +{ + if (is_graph()) + trace_graph_function(tr, ip, parent_ip, flags, pc); + else + trace_function(tr, ip, parent_ip, flags, pc); +} +#else +#define __trace_function trace_function + +static int wakeup_set_flag(u32 old_flags, u32 bit, int set) +{ + return -EINVAL; +} + +static int wakeup_graph_entry(struct ftrace_graph_ent *trace) +{ + return -1; +} + +static enum print_line_t wakeup_print_line(struct trace_iterator *iter) +{ + return TRACE_TYPE_UNHANDLED; +} + +static void wakeup_graph_return(struct ftrace_graph_ret *trace) { } +static void wakeup_print_header(struct seq_file *s) { } +static void wakeup_trace_open(struct trace_iterator *iter) { } +static void wakeup_trace_close(struct trace_iterator *iter) { } +#endif /* CONFIG_FUNCTION_GRAPH_TRACER */ + /* * Should this new latency be reported/recorded? */ @@ -152,7 +352,7 @@ probe_wakeup_sched_switch(void *ignore, /* The task we are waiting for is waking up */ data = wakeup_trace->data[wakeup_cpu]; - trace_function(wakeup_trace, CALLER_ADDR0, CALLER_ADDR1, flags, pc); + __trace_function(wakeup_trace, CALLER_ADDR0, CALLER_ADDR1, flags, pc); tracing_sched_switch_trace(wakeup_trace, prev, next, flags, pc); T0 = data->preempt_timestamp; @@ -252,7 +452,7 @@ probe_wakeup(void *ignore, struct task_struct *p, int success) * is not called by an assembly function (where as schedule is) * it should be safe to use it here. */ - trace_function(wakeup_trace, CALLER_ADDR1, CALLER_ADDR2, flags, pc); + __trace_function(wakeup_trace, CALLER_ADDR1, CALLER_ADDR2, flags, pc); out_locked: arch_spin_unlock(&wakeup_lock); @@ -303,12 +503,8 @@ static void start_wakeup_tracer(struct trace_array *tr) */ smp_wmb(); - register_ftrace_function(&trace_ops); - - if (tracing_is_enabled()) - tracer_enabled = 1; - else - tracer_enabled = 0; + if (start_func_tracer(is_graph())) + printk(KERN_ERR "failed to start wakeup tracer\n"); return; fail_deprobe_wake_new: @@ -320,7 +516,7 @@ fail_deprobe: static void stop_wakeup_tracer(struct trace_array *tr) { tracer_enabled = 0; - unregister_ftrace_function(&trace_ops); + stop_func_tracer(is_graph()); unregister_trace_sched_switch(probe_wakeup_sched_switch, NULL); unregister_trace_sched_wakeup_new(probe_wakeup, NULL); unregister_trace_sched_wakeup(probe_wakeup, NULL); @@ -379,9 +575,15 @@ static struct tracer wakeup_tracer __read_mostly = .start = wakeup_tracer_start, .stop = wakeup_tracer_stop, .print_max = 1, + .print_header = wakeup_print_header, + .print_line = wakeup_print_line, + .flags = &tracer_flags, + .set_flag = wakeup_set_flag, #ifdef CONFIG_FTRACE_SELFTEST .selftest = trace_selftest_startup_wakeup, #endif + .open = wakeup_trace_open, + .close = wakeup_trace_close, .use_max_tr = 1, }; @@ -394,9 +596,15 @@ static struct tracer wakeup_rt_tracer __read_mostly = .stop = wakeup_tracer_stop, .wait_pipe = poll_wait_pipe, .print_max = 1, + .print_header = wakeup_print_header, + .print_line = wakeup_print_line, + .flags = &tracer_flags, + .set_flag = wakeup_set_flag, #ifdef CONFIG_FTRACE_SELFTEST .selftest = trace_selftest_startup_wakeup, #endif + .open = wakeup_trace_open, + .close = wakeup_trace_close, .use_max_tr = 1, }; diff --git a/kernel/trace/trace_workqueue.c b/kernel/trace/trace_workqueue.c index a7cc3793baf6..209b379a4721 100644 --- a/kernel/trace/trace_workqueue.c +++ b/kernel/trace/trace_workqueue.c @@ -263,6 +263,11 @@ int __init trace_workqueue_early_init(void) { int ret, cpu; + for_each_possible_cpu(cpu) { + spin_lock_init(&workqueue_cpu_stat(cpu)->lock); + INIT_LIST_HEAD(&workqueue_cpu_stat(cpu)->list); + } + ret = register_trace_workqueue_insertion(probe_workqueue_insertion, NULL); if (ret) goto out; @@ -279,11 +284,6 @@ int __init trace_workqueue_early_init(void) if (ret) goto no_creation; - for_each_possible_cpu(cpu) { - spin_lock_init(&workqueue_cpu_stat(cpu)->lock); - INIT_LIST_HEAD(&workqueue_cpu_stat(cpu)->list); - } - return 0; no_creation: diff --git a/kernel/tracepoint.c b/kernel/tracepoint.c index c77f3eceea25..e95ee7f31d43 100644 --- a/kernel/tracepoint.c +++ b/kernel/tracepoint.c @@ -25,6 +25,7 @@ #include <linux/err.h> #include <linux/slab.h> #include <linux/sched.h> +#include <linux/jump_label.h> extern struct tracepoint __start___tracepoints[]; extern struct tracepoint __stop___tracepoints[]; @@ -263,7 +264,13 @@ static void set_tracepoint(struct tracepoint_entry **entry, * is used. */ rcu_assign_pointer(elem->funcs, (*entry)->funcs); - elem->state = active; + if (!elem->state && active) { + jump_label_enable(&elem->state); + elem->state = active; + } else if (elem->state && !active) { + jump_label_disable(&elem->state); + elem->state = active; + } } /* @@ -277,7 +284,10 @@ static void disable_tracepoint(struct tracepoint *elem) if (elem->unregfunc && elem->state) elem->unregfunc(); - elem->state = 0; + if (elem->state) { + jump_label_disable(&elem->state); + elem->state = 0; + } rcu_assign_pointer(elem->funcs, NULL); } diff --git a/kernel/watchdog.c b/kernel/watchdog.c index 7f9c3c52ecc1..bafba687a6d8 100644 --- a/kernel/watchdog.c +++ b/kernel/watchdog.c @@ -43,7 +43,6 @@ static DEFINE_PER_CPU(unsigned long, hrtimer_interrupts_saved); static DEFINE_PER_CPU(struct perf_event *, watchdog_ev); #endif -static int __read_mostly did_panic; static int __initdata no_watchdog; @@ -187,18 +186,6 @@ static int is_softlockup(unsigned long touch_ts) return 0; } -static int -watchdog_panic(struct notifier_block *this, unsigned long event, void *ptr) -{ - did_panic = 1; - - return NOTIFY_DONE; -} - -static struct notifier_block panic_block = { - .notifier_call = watchdog_panic, -}; - #ifdef CONFIG_HARDLOCKUP_DETECTOR static struct perf_event_attr wd_hw_attr = { .type = PERF_TYPE_HARDWARE, @@ -209,7 +196,7 @@ static struct perf_event_attr wd_hw_attr = { }; /* Callback function for perf event subsystem */ -void watchdog_overflow_callback(struct perf_event *event, int nmi, +static void watchdog_overflow_callback(struct perf_event *event, int nmi, struct perf_sample_data *data, struct pt_regs *regs) { @@ -371,14 +358,14 @@ static int watchdog_nmi_enable(int cpu) /* Try to register using hardware perf events */ wd_attr = &wd_hw_attr; wd_attr->sample_period = hw_nmi_get_sample_period(); - event = perf_event_create_kernel_counter(wd_attr, cpu, -1, watchdog_overflow_callback); + event = perf_event_create_kernel_counter(wd_attr, cpu, NULL, watchdog_overflow_callback); if (!IS_ERR(event)) { printk(KERN_INFO "NMI watchdog enabled, takes one hw-pmu counter.\n"); goto out_save; } printk(KERN_ERR "NMI watchdog failed to create perf event on cpu%i: %p\n", cpu, event); - return -1; + return PTR_ERR(event); /* success path */ out_save: @@ -422,17 +409,19 @@ static int watchdog_prepare_cpu(int cpu) static int watchdog_enable(int cpu) { struct task_struct *p = per_cpu(softlockup_watchdog, cpu); + int err; /* enable the perf event */ - if (watchdog_nmi_enable(cpu) != 0) - return -1; + err = watchdog_nmi_enable(cpu); + if (err) + return err; /* create the watchdog thread */ if (!p) { p = kthread_create(watchdog, (void *)(unsigned long)cpu, "watchdog/%d", cpu); if (IS_ERR(p)) { printk(KERN_ERR "softlockup watchdog for %i failed\n", cpu); - return -1; + return PTR_ERR(p); } kthread_bind(p, cpu); per_cpu(watchdog_touch_ts, cpu) = 0; @@ -484,6 +473,9 @@ static void watchdog_disable_all_cpus(void) { int cpu; + if (no_watchdog) + return; + for_each_online_cpu(cpu) watchdog_disable(cpu); @@ -526,17 +518,16 @@ static int __cpuinit cpu_callback(struct notifier_block *nfb, unsigned long action, void *hcpu) { int hotcpu = (unsigned long)hcpu; + int err = 0; switch (action) { case CPU_UP_PREPARE: case CPU_UP_PREPARE_FROZEN: - if (watchdog_prepare_cpu(hotcpu)) - return NOTIFY_BAD; + err = watchdog_prepare_cpu(hotcpu); break; case CPU_ONLINE: case CPU_ONLINE_FROZEN: - if (watchdog_enable(hotcpu)) - return NOTIFY_BAD; + err = watchdog_enable(hotcpu); break; #ifdef CONFIG_HOTPLUG_CPU case CPU_UP_CANCELED: @@ -549,7 +540,7 @@ cpu_callback(struct notifier_block *nfb, unsigned long action, void *hcpu) break; #endif /* CONFIG_HOTPLUG_CPU */ } - return NOTIFY_OK; + return notifier_from_errno(err); } static struct notifier_block __cpuinitdata cpu_nfb = { @@ -565,13 +556,11 @@ static int __init spawn_watchdog_task(void) return 0; err = cpu_callback(&cpu_nfb, CPU_UP_PREPARE, cpu); - WARN_ON(err == NOTIFY_BAD); + WARN_ON(notifier_to_errno(err)); cpu_callback(&cpu_nfb, CPU_ONLINE, cpu); register_cpu_notifier(&cpu_nfb); - atomic_notifier_chain_register(&panic_notifier_list, &panic_block); - return 0; } early_initcall(spawn_watchdog_task); diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug index 1b4afd2e6ca0..21ac83070a80 100644 --- a/lib/Kconfig.debug +++ b/lib/Kconfig.debug @@ -482,6 +482,7 @@ config PROVE_LOCKING select DEBUG_SPINLOCK select DEBUG_MUTEXES select DEBUG_LOCK_ALLOC + select TRACE_IRQFLAGS default n help This feature enables the kernel to prove that all locking @@ -539,6 +540,23 @@ config PROVE_RCU_REPEATEDLY disabling, allowing multiple RCU-lockdep warnings to be printed on a single reboot. + Say Y to allow multiple RCU-lockdep warnings per boot. + + Say N if you are unsure. + +config SPARSE_RCU_POINTER + bool "RCU debugging: sparse-based checks for pointer usage" + default n + help + This feature enables the __rcu sparse annotation for + RCU-protected pointers. This annotation will cause sparse + to flag any non-RCU used of annotated pointers. This can be + helpful when debugging RCU usage. Please note that this feature + is not intended to enforce code cleanliness; it is instead merely + a debugging aid. + + Say Y to make sparse flag questionable use of RCU-protected pointers + Say N if you are unsure. config LOCKDEP @@ -579,11 +597,10 @@ config DEBUG_LOCKDEP of more runtime overhead. config TRACE_IRQFLAGS - depends on DEBUG_KERNEL bool - default y - depends on TRACE_IRQFLAGS_SUPPORT - depends on PROVE_LOCKING + help + Enables hooks to interrupt enabling and disabling for + either tracing or lock debugging. config DEBUG_SPINLOCK_SLEEP bool "Spinlock debugging: sleep-inside-spinlock checking" @@ -832,6 +849,30 @@ config RCU_CPU_STALL_DETECTOR Say Y if you are unsure. +config RCU_CPU_STALL_TIMEOUT + int "RCU CPU stall timeout in seconds" + depends on RCU_CPU_STALL_DETECTOR + range 3 300 + default 60 + help + If a given RCU grace period extends more than the specified + number of seconds, a CPU stall warning is printed. If the + RCU grace period persists, additional CPU stall warnings are + printed at more widely spaced intervals. + +config RCU_CPU_STALL_DETECTOR_RUNNABLE + bool "RCU CPU stall checking starts automatically at boot" + depends on RCU_CPU_STALL_DETECTOR + default y + help + If set, start checking for RCU CPU stalls immediately on + boot. Otherwise, RCU CPU stall checking must be manually + enabled. + + Say Y if you are unsure. + + Say N if you wish to suppress RCU CPU stall checking during boot. + config RCU_CPU_STALL_VERBOSE bool "Print additional per-task information for RCU_CPU_STALL_DETECTOR" depends on RCU_CPU_STALL_DETECTOR && TREE_PREEMPT_RCU diff --git a/lib/dynamic_debug.c b/lib/dynamic_debug.c index 02afc2533728..7bd6df781ce5 100644 --- a/lib/dynamic_debug.c +++ b/lib/dynamic_debug.c @@ -26,19 +26,11 @@ #include <linux/dynamic_debug.h> #include <linux/debugfs.h> #include <linux/slab.h> +#include <linux/jump_label.h> extern struct _ddebug __start___verbose[]; extern struct _ddebug __stop___verbose[]; -/* dynamic_debug_enabled, and dynamic_debug_enabled2 are bitmasks in which - * bit n is set to 1 if any modname hashes into the bucket n, 0 otherwise. They - * use independent hash functions, to reduce the chance of false positives. - */ -long long dynamic_debug_enabled; -EXPORT_SYMBOL_GPL(dynamic_debug_enabled); -long long dynamic_debug_enabled2; -EXPORT_SYMBOL_GPL(dynamic_debug_enabled2); - struct ddebug_table { struct list_head link; char *mod_name; @@ -88,26 +80,6 @@ static char *ddebug_describe_flags(struct _ddebug *dp, char *buf, } /* - * must be called with ddebug_lock held - */ - -static int disabled_hash(char hash, bool first_table) -{ - struct ddebug_table *dt; - char table_hash_value; - - list_for_each_entry(dt, &ddebug_tables, link) { - if (first_table) - table_hash_value = dt->ddebugs->primary_hash; - else - table_hash_value = dt->ddebugs->secondary_hash; - if (dt->num_enabled && (hash == table_hash_value)) - return 0; - } - return 1; -} - -/* * Search the tables for _ddebug's which match the given * `query' and apply the `flags' and `mask' to them. Tells * the user which ddebug's were changed, or whether none @@ -170,17 +142,9 @@ static void ddebug_change(const struct ddebug_query *query, dt->num_enabled++; dp->flags = newflags; if (newflags) { - dynamic_debug_enabled |= - (1LL << dp->primary_hash); - dynamic_debug_enabled2 |= - (1LL << dp->secondary_hash); + jump_label_enable(&dp->enabled); } else { - if (disabled_hash(dp->primary_hash, true)) - dynamic_debug_enabled &= - ~(1LL << dp->primary_hash); - if (disabled_hash(dp->secondary_hash, false)) - dynamic_debug_enabled2 &= - ~(1LL << dp->secondary_hash); + jump_label_disable(&dp->enabled); } if (verbose) printk(KERN_INFO diff --git a/lib/radix-tree.c b/lib/radix-tree.c index efd16fa80b1c..6f412ab4c24f 100644 --- a/lib/radix-tree.c +++ b/lib/radix-tree.c @@ -49,7 +49,7 @@ struct radix_tree_node { unsigned int height; /* Height from the bottom */ unsigned int count; struct rcu_head rcu_head; - void *slots[RADIX_TREE_MAP_SIZE]; + void __rcu *slots[RADIX_TREE_MAP_SIZE]; unsigned long tags[RADIX_TREE_MAX_TAGS][RADIX_TREE_TAG_LONGS]; }; diff --git a/lib/swiotlb.c b/lib/swiotlb.c index 34e3082632d8..7c06ee51a29a 100644 --- a/lib/swiotlb.c +++ b/lib/swiotlb.c @@ -70,7 +70,7 @@ static unsigned long io_tlb_nslabs; */ static unsigned long io_tlb_overflow = 32*1024; -void *io_tlb_overflow_buffer; +static void *io_tlb_overflow_buffer; /* * This is a free list describing the number of free entries available from @@ -147,16 +147,16 @@ void __init swiotlb_init_with_tbl(char *tlb, unsigned long nslabs, int verbose) * to find contiguous free memory regions of size up to IO_TLB_SEGSIZE * between io_tlb_start and io_tlb_end. */ - io_tlb_list = alloc_bootmem(io_tlb_nslabs * sizeof(int)); + io_tlb_list = alloc_bootmem_pages(PAGE_ALIGN(io_tlb_nslabs * sizeof(int))); for (i = 0; i < io_tlb_nslabs; i++) io_tlb_list[i] = IO_TLB_SEGSIZE - OFFSET(i, IO_TLB_SEGSIZE); io_tlb_index = 0; - io_tlb_orig_addr = alloc_bootmem(io_tlb_nslabs * sizeof(phys_addr_t)); + io_tlb_orig_addr = alloc_bootmem_pages(PAGE_ALIGN(io_tlb_nslabs * sizeof(phys_addr_t))); /* * Get the overflow emergency buffer */ - io_tlb_overflow_buffer = alloc_bootmem_low(io_tlb_overflow); + io_tlb_overflow_buffer = alloc_bootmem_low_pages(PAGE_ALIGN(io_tlb_overflow)); if (!io_tlb_overflow_buffer) panic("Cannot allocate SWIOTLB overflow buffer!\n"); if (verbose) @@ -182,7 +182,7 @@ swiotlb_init_with_default_size(size_t default_size, int verbose) /* * Get IO TLB memory from the low pages */ - io_tlb_start = alloc_bootmem_low_pages(bytes); + io_tlb_start = alloc_bootmem_low_pages(PAGE_ALIGN(bytes)); if (!io_tlb_start) panic("Cannot allocate SWIOTLB buffer"); @@ -308,13 +308,13 @@ void __init swiotlb_free(void) get_order(io_tlb_nslabs << IO_TLB_SHIFT)); } else { free_bootmem_late(__pa(io_tlb_overflow_buffer), - io_tlb_overflow); + PAGE_ALIGN(io_tlb_overflow)); free_bootmem_late(__pa(io_tlb_orig_addr), - io_tlb_nslabs * sizeof(phys_addr_t)); + PAGE_ALIGN(io_tlb_nslabs * sizeof(phys_addr_t))); free_bootmem_late(__pa(io_tlb_list), - io_tlb_nslabs * sizeof(int)); + PAGE_ALIGN(io_tlb_nslabs * sizeof(int))); free_bootmem_late(__pa(io_tlb_start), - io_tlb_nslabs << IO_TLB_SHIFT); + PAGE_ALIGN(io_tlb_nslabs << IO_TLB_SHIFT)); } } diff --git a/mm/memory.c b/mm/memory.c index 0e18b4d649ec..98b58fecedef 100644 --- a/mm/memory.c +++ b/mm/memory.c @@ -3185,7 +3185,7 @@ static inline int handle_pte_fault(struct mm_struct *mm, * with threads. */ if (flags & FAULT_FLAG_WRITE) - flush_tlb_page(vma, address); + flush_tlb_fix_spurious_fault(vma, address); } unlock: pte_unmap_unlock(pte, ptl); diff --git a/mm/vmalloc.c b/mm/vmalloc.c index 6b8889da69a6..d8087f0db507 100644 --- a/mm/vmalloc.c +++ b/mm/vmalloc.c @@ -517,6 +517,15 @@ static atomic_t vmap_lazy_nr = ATOMIC_INIT(0); static void purge_fragmented_blocks_allcpus(void); /* + * called before a call to iounmap() if the caller wants vm_area_struct's + * immediately freed. + */ +void set_iounmap_nonlazy(void) +{ + atomic_set(&vmap_lazy_nr, lazy_max_pages()+1); +} + +/* * Purges all lazily-freed vmap areas. * * If sync is 0 then don't purge if there is already a purge in progress. diff --git a/net/Kconfig b/net/Kconfig index e926884c1675..55fd82e9ffd9 100644 --- a/net/Kconfig +++ b/net/Kconfig @@ -293,6 +293,7 @@ source "net/wimax/Kconfig" source "net/rfkill/Kconfig" source "net/9p/Kconfig" source "net/caif/Kconfig" +source "net/ceph/Kconfig" endif # if NET diff --git a/net/Makefile b/net/Makefile index ea60fbce9b1b..6b7bfd7f1416 100644 --- a/net/Makefile +++ b/net/Makefile @@ -68,3 +68,4 @@ obj-$(CONFIG_SYSCTL) += sysctl_net.o endif obj-$(CONFIG_WIMAX) += wimax/ obj-$(CONFIG_DNS_RESOLVER) += dns_resolver/ +obj-$(CONFIG_CEPH_LIB) += ceph/ diff --git a/net/ceph/Kconfig b/net/ceph/Kconfig new file mode 100644 index 000000000000..ad424049b0cf --- /dev/null +++ b/net/ceph/Kconfig @@ -0,0 +1,28 @@ +config CEPH_LIB + tristate "Ceph core library (EXPERIMENTAL)" + depends on INET && EXPERIMENTAL + select LIBCRC32C + select CRYPTO_AES + select CRYPTO + default n + help + Choose Y or M here to include cephlib, which provides the + common functionality to both the Ceph filesystem and + to the rados block device (rbd). + + More information at http://ceph.newdream.net/. + + If unsure, say N. + +config CEPH_LIB_PRETTYDEBUG + bool "Include file:line in ceph debug output" + depends on CEPH_LIB + default n + help + If you say Y here, debug output will include a filename and + line to aid debugging. This increases kernel size and slows + execution slightly when debug call sites are enabled (e.g., + via CONFIG_DYNAMIC_DEBUG). + + If unsure, say N. + diff --git a/net/ceph/Makefile b/net/ceph/Makefile new file mode 100644 index 000000000000..aab1cabb8035 --- /dev/null +++ b/net/ceph/Makefile @@ -0,0 +1,37 @@ +# +# Makefile for CEPH filesystem. +# + +ifneq ($(KERNELRELEASE),) + +obj-$(CONFIG_CEPH_LIB) += libceph.o + +libceph-objs := ceph_common.o messenger.o msgpool.o buffer.o pagelist.o \ + mon_client.o \ + osd_client.o osdmap.o crush/crush.o crush/mapper.o crush/hash.o \ + debugfs.o \ + auth.o auth_none.o \ + crypto.o armor.o \ + auth_x.o \ + ceph_fs.o ceph_strings.o ceph_hash.o \ + pagevec.o + +else +#Otherwise we were called directly from the command +# line; invoke the kernel build system. + +KERNELDIR ?= /lib/modules/$(shell uname -r)/build +PWD := $(shell pwd) + +default: all + +all: + $(MAKE) -C $(KERNELDIR) M=$(PWD) CONFIG_CEPH_LIB=m modules + +modules_install: + $(MAKE) -C $(KERNELDIR) M=$(PWD) CONFIG_CEPH_LIB=m modules_install + +clean: + $(MAKE) -C $(KERNELDIR) M=$(PWD) clean + +endif diff --git a/fs/ceph/armor.c b/net/ceph/armor.c index eb2a666b0be7..eb2a666b0be7 100644 --- a/fs/ceph/armor.c +++ b/net/ceph/armor.c diff --git a/fs/ceph/auth.c b/net/ceph/auth.c index 6d2e30600627..549c1f43e1d5 100644 --- a/fs/ceph/auth.c +++ b/net/ceph/auth.c @@ -1,16 +1,16 @@ -#include "ceph_debug.h" +#include <linux/ceph/ceph_debug.h> #include <linux/module.h> #include <linux/err.h> #include <linux/slab.h> -#include "types.h" +#include <linux/ceph/types.h> +#include <linux/ceph/decode.h> +#include <linux/ceph/libceph.h> +#include <linux/ceph/messenger.h> #include "auth_none.h" #include "auth_x.h" -#include "decode.h" -#include "super.h" -#include "messenger.h" /* * get protocol handler diff --git a/fs/ceph/auth_none.c b/net/ceph/auth_none.c index ad1dc21286c7..214c2bb43d62 100644 --- a/fs/ceph/auth_none.c +++ b/net/ceph/auth_none.c @@ -1,14 +1,15 @@ -#include "ceph_debug.h" +#include <linux/ceph/ceph_debug.h> #include <linux/err.h> #include <linux/module.h> #include <linux/random.h> #include <linux/slab.h> +#include <linux/ceph/decode.h> +#include <linux/ceph/auth.h> + #include "auth_none.h" -#include "auth.h" -#include "decode.h" static void reset(struct ceph_auth_client *ac) { diff --git a/fs/ceph/auth_none.h b/net/ceph/auth_none.h index 8164df1a08be..ed7d088b1bc9 100644 --- a/fs/ceph/auth_none.h +++ b/net/ceph/auth_none.h @@ -2,8 +2,7 @@ #define _FS_CEPH_AUTH_NONE_H #include <linux/slab.h> - -#include "auth.h" +#include <linux/ceph/auth.h> /* * null security mode. diff --git a/fs/ceph/auth_x.c b/net/ceph/auth_x.c index a2d002cbdec2..7fd5dfcf6e18 100644 --- a/fs/ceph/auth_x.c +++ b/net/ceph/auth_x.c @@ -1,16 +1,17 @@ -#include "ceph_debug.h" +#include <linux/ceph/ceph_debug.h> #include <linux/err.h> #include <linux/module.h> #include <linux/random.h> #include <linux/slab.h> +#include <linux/ceph/decode.h> +#include <linux/ceph/auth.h> + +#include "crypto.h" #include "auth_x.h" #include "auth_x_protocol.h" -#include "crypto.h" -#include "auth.h" -#include "decode.h" #define TEMP_TICKET_BUF_LEN 256 diff --git a/fs/ceph/auth_x.h b/net/ceph/auth_x.h index ff6f8180e681..e02da7a5c5a1 100644 --- a/fs/ceph/auth_x.h +++ b/net/ceph/auth_x.h @@ -3,8 +3,9 @@ #include <linux/rbtree.h> +#include <linux/ceph/auth.h> + #include "crypto.h" -#include "auth.h" #include "auth_x_protocol.h" /* diff --git a/fs/ceph/auth_x_protocol.h b/net/ceph/auth_x_protocol.h index 671d30576c4f..671d30576c4f 100644 --- a/fs/ceph/auth_x_protocol.h +++ b/net/ceph/auth_x_protocol.h diff --git a/fs/ceph/buffer.c b/net/ceph/buffer.c index cd39f17021de..53d8abfa25d5 100644 --- a/fs/ceph/buffer.c +++ b/net/ceph/buffer.c @@ -1,10 +1,11 @@ -#include "ceph_debug.h" +#include <linux/ceph/ceph_debug.h> +#include <linux/module.h> #include <linux/slab.h> -#include "buffer.h" -#include "decode.h" +#include <linux/ceph/buffer.h> +#include <linux/ceph/decode.h> struct ceph_buffer *ceph_buffer_new(size_t len, gfp_t gfp) { @@ -32,6 +33,7 @@ struct ceph_buffer *ceph_buffer_new(size_t len, gfp_t gfp) dout("buffer_new %p\n", b); return b; } +EXPORT_SYMBOL(ceph_buffer_new); void ceph_buffer_release(struct kref *kref) { @@ -46,6 +48,7 @@ void ceph_buffer_release(struct kref *kref) } kfree(b); } +EXPORT_SYMBOL(ceph_buffer_release); int ceph_decode_buffer(struct ceph_buffer **b, void **p, void *end) { diff --git a/net/ceph/ceph_common.c b/net/ceph/ceph_common.c new file mode 100644 index 000000000000..f3e4a13fea0c --- /dev/null +++ b/net/ceph/ceph_common.c @@ -0,0 +1,529 @@ + +#include <linux/ceph/ceph_debug.h> +#include <linux/backing-dev.h> +#include <linux/ctype.h> +#include <linux/fs.h> +#include <linux/inet.h> +#include <linux/in6.h> +#include <linux/module.h> +#include <linux/mount.h> +#include <linux/parser.h> +#include <linux/sched.h> +#include <linux/seq_file.h> +#include <linux/slab.h> +#include <linux/statfs.h> +#include <linux/string.h> + + +#include <linux/ceph/libceph.h> +#include <linux/ceph/debugfs.h> +#include <linux/ceph/decode.h> +#include <linux/ceph/mon_client.h> +#include <linux/ceph/auth.h> + + + +/* + * find filename portion of a path (/foo/bar/baz -> baz) + */ +const char *ceph_file_part(const char *s, int len) +{ + const char *e = s + len; + + while (e != s && *(e-1) != '/') + e--; + return e; +} +EXPORT_SYMBOL(ceph_file_part); + +const char *ceph_msg_type_name(int type) +{ + switch (type) { + case CEPH_MSG_SHUTDOWN: return "shutdown"; + case CEPH_MSG_PING: return "ping"; + case CEPH_MSG_AUTH: return "auth"; + case CEPH_MSG_AUTH_REPLY: return "auth_reply"; + case CEPH_MSG_MON_MAP: return "mon_map"; + case CEPH_MSG_MON_GET_MAP: return "mon_get_map"; + case CEPH_MSG_MON_SUBSCRIBE: return "mon_subscribe"; + case CEPH_MSG_MON_SUBSCRIBE_ACK: return "mon_subscribe_ack"; + case CEPH_MSG_STATFS: return "statfs"; + case CEPH_MSG_STATFS_REPLY: return "statfs_reply"; + case CEPH_MSG_MDS_MAP: return "mds_map"; + case CEPH_MSG_CLIENT_SESSION: return "client_session"; + case CEPH_MSG_CLIENT_RECONNECT: return "client_reconnect"; + case CEPH_MSG_CLIENT_REQUEST: return "client_request"; + case CEPH_MSG_CLIENT_REQUEST_FORWARD: return "client_request_forward"; + case CEPH_MSG_CLIENT_REPLY: return "client_reply"; + case CEPH_MSG_CLIENT_CAPS: return "client_caps"; + case CEPH_MSG_CLIENT_CAPRELEASE: return "client_cap_release"; + case CEPH_MSG_CLIENT_SNAP: return "client_snap"; + case CEPH_MSG_CLIENT_LEASE: return "client_lease"; + case CEPH_MSG_OSD_MAP: return "osd_map"; + case CEPH_MSG_OSD_OP: return "osd_op"; + case CEPH_MSG_OSD_OPREPLY: return "osd_opreply"; + default: return "unknown"; + } +} +EXPORT_SYMBOL(ceph_msg_type_name); + +/* + * Initially learn our fsid, or verify an fsid matches. + */ +int ceph_check_fsid(struct ceph_client *client, struct ceph_fsid *fsid) +{ + if (client->have_fsid) { + if (ceph_fsid_compare(&client->fsid, fsid)) { + pr_err("bad fsid, had %pU got %pU", + &client->fsid, fsid); + return -1; + } + } else { + pr_info("client%lld fsid %pU\n", ceph_client_id(client), fsid); + memcpy(&client->fsid, fsid, sizeof(*fsid)); + ceph_debugfs_client_init(client); + client->have_fsid = true; + } + return 0; +} +EXPORT_SYMBOL(ceph_check_fsid); + +static int strcmp_null(const char *s1, const char *s2) +{ + if (!s1 && !s2) + return 0; + if (s1 && !s2) + return -1; + if (!s1 && s2) + return 1; + return strcmp(s1, s2); +} + +int ceph_compare_options(struct ceph_options *new_opt, + struct ceph_client *client) +{ + struct ceph_options *opt1 = new_opt; + struct ceph_options *opt2 = client->options; + int ofs = offsetof(struct ceph_options, mon_addr); + int i; + int ret; + + ret = memcmp(opt1, opt2, ofs); + if (ret) + return ret; + + ret = strcmp_null(opt1->name, opt2->name); + if (ret) + return ret; + + ret = strcmp_null(opt1->secret, opt2->secret); + if (ret) + return ret; + + /* any matching mon ip implies a match */ + for (i = 0; i < opt1->num_mon; i++) { + if (ceph_monmap_contains(client->monc.monmap, + &opt1->mon_addr[i])) + return 0; + } + return -1; +} +EXPORT_SYMBOL(ceph_compare_options); + + +static int parse_fsid(const char *str, struct ceph_fsid *fsid) +{ + int i = 0; + char tmp[3]; + int err = -EINVAL; + int d; + + dout("parse_fsid '%s'\n", str); + tmp[2] = 0; + while (*str && i < 16) { + if (ispunct(*str)) { + str++; + continue; + } + if (!isxdigit(str[0]) || !isxdigit(str[1])) + break; + tmp[0] = str[0]; + tmp[1] = str[1]; + if (sscanf(tmp, "%x", &d) < 1) + break; + fsid->fsid[i] = d & 0xff; + i++; + str += 2; + } + + if (i == 16) + err = 0; + dout("parse_fsid ret %d got fsid %pU", err, fsid); + return err; +} + +/* + * ceph options + */ +enum { + Opt_osdtimeout, + Opt_osdkeepalivetimeout, + Opt_mount_timeout, + Opt_osd_idle_ttl, + Opt_last_int, + /* int args above */ + Opt_fsid, + Opt_name, + Opt_secret, + Opt_ip, + Opt_last_string, + /* string args above */ + Opt_noshare, + Opt_nocrc, +}; + +static match_table_t opt_tokens = { + {Opt_osdtimeout, "osdtimeout=%d"}, + {Opt_osdkeepalivetimeout, "osdkeepalive=%d"}, + {Opt_mount_timeout, "mount_timeout=%d"}, + {Opt_osd_idle_ttl, "osd_idle_ttl=%d"}, + /* int args above */ + {Opt_fsid, "fsid=%s"}, + {Opt_name, "name=%s"}, + {Opt_secret, "secret=%s"}, + {Opt_ip, "ip=%s"}, + /* string args above */ + {Opt_noshare, "noshare"}, + {Opt_nocrc, "nocrc"}, + {-1, NULL} +}; + +void ceph_destroy_options(struct ceph_options *opt) +{ + dout("destroy_options %p\n", opt); + kfree(opt->name); + kfree(opt->secret); + kfree(opt); +} +EXPORT_SYMBOL(ceph_destroy_options); + +int ceph_parse_options(struct ceph_options **popt, char *options, + const char *dev_name, const char *dev_name_end, + int (*parse_extra_token)(char *c, void *private), + void *private) +{ + struct ceph_options *opt; + const char *c; + int err = -ENOMEM; + substring_t argstr[MAX_OPT_ARGS]; + + opt = kzalloc(sizeof(*opt), GFP_KERNEL); + if (!opt) + return err; + opt->mon_addr = kcalloc(CEPH_MAX_MON, sizeof(*opt->mon_addr), + GFP_KERNEL); + if (!opt->mon_addr) + goto out; + + dout("parse_options %p options '%s' dev_name '%s'\n", opt, options, + dev_name); + + /* start with defaults */ + opt->flags = CEPH_OPT_DEFAULT; + opt->osd_timeout = CEPH_OSD_TIMEOUT_DEFAULT; + opt->osd_keepalive_timeout = CEPH_OSD_KEEPALIVE_DEFAULT; + opt->mount_timeout = CEPH_MOUNT_TIMEOUT_DEFAULT; /* seconds */ + opt->osd_idle_ttl = CEPH_OSD_IDLE_TTL_DEFAULT; /* seconds */ + + /* get mon ip(s) */ + /* ip1[:port1][,ip2[:port2]...] */ + err = ceph_parse_ips(dev_name, dev_name_end, opt->mon_addr, + CEPH_MAX_MON, &opt->num_mon); + if (err < 0) + goto out; + + /* parse mount options */ + while ((c = strsep(&options, ",")) != NULL) { + int token, intval, ret; + if (!*c) + continue; + err = -EINVAL; + token = match_token((char *)c, opt_tokens, argstr); + if (token < 0 && parse_extra_token) { + /* extra? */ + err = parse_extra_token((char *)c, private); + if (err < 0) { + pr_err("bad option at '%s'\n", c); + goto out; + } + continue; + } + if (token < Opt_last_int) { + ret = match_int(&argstr[0], &intval); + if (ret < 0) { + pr_err("bad mount option arg (not int) " + "at '%s'\n", c); + continue; + } + dout("got int token %d val %d\n", token, intval); + } else if (token > Opt_last_int && token < Opt_last_string) { + dout("got string token %d val %s\n", token, + argstr[0].from); + } else { + dout("got token %d\n", token); + } + switch (token) { + case Opt_ip: + err = ceph_parse_ips(argstr[0].from, + argstr[0].to, + &opt->my_addr, + 1, NULL); + if (err < 0) + goto out; + opt->flags |= CEPH_OPT_MYIP; + break; + + case Opt_fsid: + err = parse_fsid(argstr[0].from, &opt->fsid); + if (err == 0) + opt->flags |= CEPH_OPT_FSID; + break; + case Opt_name: + opt->name = kstrndup(argstr[0].from, + argstr[0].to-argstr[0].from, + GFP_KERNEL); + break; + case Opt_secret: + opt->secret = kstrndup(argstr[0].from, + argstr[0].to-argstr[0].from, + GFP_KERNEL); + break; + + /* misc */ + case Opt_osdtimeout: + opt->osd_timeout = intval; + break; + case Opt_osdkeepalivetimeout: + opt->osd_keepalive_timeout = intval; + break; + case Opt_osd_idle_ttl: + opt->osd_idle_ttl = intval; + break; + case Opt_mount_timeout: + opt->mount_timeout = intval; + break; + + case Opt_noshare: + opt->flags |= CEPH_OPT_NOSHARE; + break; + + case Opt_nocrc: + opt->flags |= CEPH_OPT_NOCRC; + break; + + default: + BUG_ON(token); + } + } + + /* success */ + *popt = opt; + return 0; + +out: + ceph_destroy_options(opt); + return err; +} +EXPORT_SYMBOL(ceph_parse_options); + +u64 ceph_client_id(struct ceph_client *client) +{ + return client->monc.auth->global_id; +} +EXPORT_SYMBOL(ceph_client_id); + +/* + * create a fresh client instance + */ +struct ceph_client *ceph_create_client(struct ceph_options *opt, void *private) +{ + struct ceph_client *client; + int err = -ENOMEM; + + client = kzalloc(sizeof(*client), GFP_KERNEL); + if (client == NULL) + return ERR_PTR(-ENOMEM); + + client->private = private; + client->options = opt; + + mutex_init(&client->mount_mutex); + init_waitqueue_head(&client->auth_wq); + client->auth_err = 0; + + client->extra_mon_dispatch = NULL; + client->supported_features = CEPH_FEATURE_SUPPORTED_DEFAULT; + client->required_features = CEPH_FEATURE_REQUIRED_DEFAULT; + + client->msgr = NULL; + + /* subsystems */ + err = ceph_monc_init(&client->monc, client); + if (err < 0) + goto fail; + err = ceph_osdc_init(&client->osdc, client); + if (err < 0) + goto fail_monc; + + return client; + +fail_monc: + ceph_monc_stop(&client->monc); +fail: + kfree(client); + return ERR_PTR(err); +} +EXPORT_SYMBOL(ceph_create_client); + +void ceph_destroy_client(struct ceph_client *client) +{ + dout("destroy_client %p\n", client); + + /* unmount */ + ceph_osdc_stop(&client->osdc); + + /* + * make sure mds and osd connections close out before destroying + * the auth module, which is needed to free those connections' + * ceph_authorizers. + */ + ceph_msgr_flush(); + + ceph_monc_stop(&client->monc); + + ceph_debugfs_client_cleanup(client); + + if (client->msgr) + ceph_messenger_destroy(client->msgr); + + ceph_destroy_options(client->options); + + kfree(client); + dout("destroy_client %p done\n", client); +} +EXPORT_SYMBOL(ceph_destroy_client); + +/* + * true if we have the mon map (and have thus joined the cluster) + */ +static int have_mon_and_osd_map(struct ceph_client *client) +{ + return client->monc.monmap && client->monc.monmap->epoch && + client->osdc.osdmap && client->osdc.osdmap->epoch; +} + +/* + * mount: join the ceph cluster, and open root directory. + */ +int __ceph_open_session(struct ceph_client *client, unsigned long started) +{ + struct ceph_entity_addr *myaddr = NULL; + int err; + unsigned long timeout = client->options->mount_timeout * HZ; + + /* initialize the messenger */ + if (client->msgr == NULL) { + if (ceph_test_opt(client, MYIP)) + myaddr = &client->options->my_addr; + client->msgr = ceph_messenger_create(myaddr, + client->supported_features, + client->required_features); + if (IS_ERR(client->msgr)) { + client->msgr = NULL; + return PTR_ERR(client->msgr); + } + client->msgr->nocrc = ceph_test_opt(client, NOCRC); + } + + /* open session, and wait for mon and osd maps */ + err = ceph_monc_open_session(&client->monc); + if (err < 0) + return err; + + while (!have_mon_and_osd_map(client)) { + err = -EIO; + if (timeout && time_after_eq(jiffies, started + timeout)) + return err; + + /* wait */ + dout("mount waiting for mon_map\n"); + err = wait_event_interruptible_timeout(client->auth_wq, + have_mon_and_osd_map(client) || (client->auth_err < 0), + timeout); + if (err == -EINTR || err == -ERESTARTSYS) + return err; + if (client->auth_err < 0) + return client->auth_err; + } + + return 0; +} +EXPORT_SYMBOL(__ceph_open_session); + + +int ceph_open_session(struct ceph_client *client) +{ + int ret; + unsigned long started = jiffies; /* note the start time */ + + dout("open_session start\n"); + mutex_lock(&client->mount_mutex); + + ret = __ceph_open_session(client, started); + + mutex_unlock(&client->mount_mutex); + return ret; +} +EXPORT_SYMBOL(ceph_open_session); + + +static int __init init_ceph_lib(void) +{ + int ret = 0; + + ret = ceph_debugfs_init(); + if (ret < 0) + goto out; + + ret = ceph_msgr_init(); + if (ret < 0) + goto out_debugfs; + + pr_info("loaded (mon/osd proto %d/%d, osdmap %d/%d %d/%d)\n", + CEPH_MONC_PROTOCOL, CEPH_OSDC_PROTOCOL, + CEPH_OSDMAP_VERSION, CEPH_OSDMAP_VERSION_EXT, + CEPH_OSDMAP_INC_VERSION, CEPH_OSDMAP_INC_VERSION_EXT); + + return 0; + +out_debugfs: + ceph_debugfs_cleanup(); +out: + return ret; +} + +static void __exit exit_ceph_lib(void) +{ + dout("exit_ceph_lib\n"); + ceph_msgr_exit(); + ceph_debugfs_cleanup(); +} + +module_init(init_ceph_lib); +module_exit(exit_ceph_lib); + +MODULE_AUTHOR("Sage Weil <sage@newdream.net>"); +MODULE_AUTHOR("Yehuda Sadeh <yehuda@hq.newdream.net>"); +MODULE_AUTHOR("Patience Warnick <patience@newdream.net>"); +MODULE_DESCRIPTION("Ceph filesystem for Linux"); +MODULE_LICENSE("GPL"); diff --git a/fs/ceph/ceph_fs.c b/net/ceph/ceph_fs.c index 3ac6cc7c1156..a3a3a31d3c37 100644 --- a/fs/ceph/ceph_fs.c +++ b/net/ceph/ceph_fs.c @@ -1,7 +1,8 @@ /* * Some non-inline ceph helpers */ -#include "types.h" +#include <linux/module.h> +#include <linux/ceph/types.h> /* * return true if @layout appears to be valid @@ -52,6 +53,7 @@ int ceph_flags_to_mode(int flags) return mode; } +EXPORT_SYMBOL(ceph_flags_to_mode); int ceph_caps_for_mode(int mode) { @@ -70,3 +72,4 @@ int ceph_caps_for_mode(int mode) return caps; } +EXPORT_SYMBOL(ceph_caps_for_mode); diff --git a/fs/ceph/ceph_hash.c b/net/ceph/ceph_hash.c index bd570015d147..815ef8826796 100644 --- a/fs/ceph/ceph_hash.c +++ b/net/ceph/ceph_hash.c @@ -1,5 +1,5 @@ -#include "types.h" +#include <linux/ceph/types.h> /* * Robert Jenkin's hash function. diff --git a/net/ceph/ceph_strings.c b/net/ceph/ceph_strings.c new file mode 100644 index 000000000000..3fbda04de29c --- /dev/null +++ b/net/ceph/ceph_strings.c @@ -0,0 +1,84 @@ +/* + * Ceph string constants + */ +#include <linux/module.h> +#include <linux/ceph/types.h> + +const char *ceph_entity_type_name(int type) +{ + switch (type) { + case CEPH_ENTITY_TYPE_MDS: return "mds"; + case CEPH_ENTITY_TYPE_OSD: return "osd"; + case CEPH_ENTITY_TYPE_MON: return "mon"; + case CEPH_ENTITY_TYPE_CLIENT: return "client"; + case CEPH_ENTITY_TYPE_AUTH: return "auth"; + default: return "unknown"; + } +} + +const char *ceph_osd_op_name(int op) +{ + switch (op) { + case CEPH_OSD_OP_READ: return "read"; + case CEPH_OSD_OP_STAT: return "stat"; + + case CEPH_OSD_OP_MASKTRUNC: return "masktrunc"; + + case CEPH_OSD_OP_WRITE: return "write"; + case CEPH_OSD_OP_DELETE: return "delete"; + case CEPH_OSD_OP_TRUNCATE: return "truncate"; + case CEPH_OSD_OP_ZERO: return "zero"; + case CEPH_OSD_OP_WRITEFULL: return "writefull"; + case CEPH_OSD_OP_ROLLBACK: return "rollback"; + + case CEPH_OSD_OP_APPEND: return "append"; + case CEPH_OSD_OP_STARTSYNC: return "startsync"; + case CEPH_OSD_OP_SETTRUNC: return "settrunc"; + case CEPH_OSD_OP_TRIMTRUNC: return "trimtrunc"; + + case CEPH_OSD_OP_TMAPUP: return "tmapup"; + case CEPH_OSD_OP_TMAPGET: return "tmapget"; + case CEPH_OSD_OP_TMAPPUT: return "tmapput"; + + case CEPH_OSD_OP_GETXATTR: return "getxattr"; + case CEPH_OSD_OP_GETXATTRS: return "getxattrs"; + case CEPH_OSD_OP_SETXATTR: return "setxattr"; + case CEPH_OSD_OP_SETXATTRS: return "setxattrs"; + case CEPH_OSD_OP_RESETXATTRS: return "resetxattrs"; + case CEPH_OSD_OP_RMXATTR: return "rmxattr"; + case CEPH_OSD_OP_CMPXATTR: return "cmpxattr"; + + case CEPH_OSD_OP_PULL: return "pull"; + case CEPH_OSD_OP_PUSH: return "push"; + case CEPH_OSD_OP_BALANCEREADS: return "balance-reads"; + case CEPH_OSD_OP_UNBALANCEREADS: return "unbalance-reads"; + case CEPH_OSD_OP_SCRUB: return "scrub"; + + case CEPH_OSD_OP_WRLOCK: return "wrlock"; + case CEPH_OSD_OP_WRUNLOCK: return "wrunlock"; + case CEPH_OSD_OP_RDLOCK: return "rdlock"; + case CEPH_OSD_OP_RDUNLOCK: return "rdunlock"; + case CEPH_OSD_OP_UPLOCK: return "uplock"; + case CEPH_OSD_OP_DNLOCK: return "dnlock"; + + case CEPH_OSD_OP_CALL: return "call"; + + case CEPH_OSD_OP_PGLS: return "pgls"; + } + return "???"; +} + + +const char *ceph_pool_op_name(int op) +{ + switch (op) { + case POOL_OP_CREATE: return "create"; + case POOL_OP_DELETE: return "delete"; + case POOL_OP_AUID_CHANGE: return "auid change"; + case POOL_OP_CREATE_SNAP: return "create snap"; + case POOL_OP_DELETE_SNAP: return "delete snap"; + case POOL_OP_CREATE_UNMANAGED_SNAP: return "create unmanaged snap"; + case POOL_OP_DELETE_UNMANAGED_SNAP: return "delete unmanaged snap"; + } + return "???"; +} diff --git a/fs/ceph/crush/crush.c b/net/ceph/crush/crush.c index fabd302e5779..d6ebb13a18a4 100644 --- a/fs/ceph/crush/crush.c +++ b/net/ceph/crush/crush.c @@ -8,7 +8,7 @@ # define BUG_ON(x) assert(!(x)) #endif -#include "crush.h" +#include <linux/crush/crush.h> const char *crush_bucket_alg_name(int alg) { diff --git a/fs/ceph/crush/hash.c b/net/ceph/crush/hash.c index 5873aed694bf..5bb63e37a8a1 100644 --- a/fs/ceph/crush/hash.c +++ b/net/ceph/crush/hash.c @@ -1,6 +1,6 @@ #include <linux/types.h> -#include "hash.h" +#include <linux/crush/hash.h> /* * Robert Jenkins' function for mixing 32-bit values diff --git a/fs/ceph/crush/mapper.c b/net/ceph/crush/mapper.c index a4eec133258e..42599e31dcad 100644 --- a/fs/ceph/crush/mapper.c +++ b/net/ceph/crush/mapper.c @@ -18,8 +18,8 @@ # define kfree(x) free(x) #endif -#include "crush.h" -#include "hash.h" +#include <linux/crush/crush.h> +#include <linux/crush/hash.h> /* * Implement the core CRUSH mapping algorithm. diff --git a/fs/ceph/crypto.c b/net/ceph/crypto.c index a3e627f63293..7b505b0c983f 100644 --- a/fs/ceph/crypto.c +++ b/net/ceph/crypto.c @@ -1,13 +1,13 @@ -#include "ceph_debug.h" +#include <linux/ceph/ceph_debug.h> #include <linux/err.h> #include <linux/scatterlist.h> #include <linux/slab.h> #include <crypto/hash.h> +#include <linux/ceph/decode.h> #include "crypto.h" -#include "decode.h" int ceph_crypto_key_encode(struct ceph_crypto_key *key, void **p, void *end) { diff --git a/fs/ceph/crypto.h b/net/ceph/crypto.h index bdf38607323c..f9eccace592b 100644 --- a/fs/ceph/crypto.h +++ b/net/ceph/crypto.h @@ -1,8 +1,8 @@ #ifndef _FS_CEPH_CRYPTO_H #define _FS_CEPH_CRYPTO_H -#include "types.h" -#include "buffer.h" +#include <linux/ceph/types.h> +#include <linux/ceph/buffer.h> /* * cryptographic secret diff --git a/net/ceph/debugfs.c b/net/ceph/debugfs.c new file mode 100644 index 000000000000..27d4ea315d12 --- /dev/null +++ b/net/ceph/debugfs.c @@ -0,0 +1,267 @@ +#include <linux/ceph/ceph_debug.h> + +#include <linux/device.h> +#include <linux/slab.h> +#include <linux/module.h> +#include <linux/ctype.h> +#include <linux/debugfs.h> +#include <linux/seq_file.h> + +#include <linux/ceph/libceph.h> +#include <linux/ceph/mon_client.h> +#include <linux/ceph/auth.h> +#include <linux/ceph/debugfs.h> + +#ifdef CONFIG_DEBUG_FS + +/* + * Implement /sys/kernel/debug/ceph fun + * + * /sys/kernel/debug/ceph/client* - an instance of the ceph client + * .../osdmap - current osdmap + * .../monmap - current monmap + * .../osdc - active osd requests + * .../monc - mon client state + * .../dentry_lru - dump contents of dentry lru + * .../caps - expose cap (reservation) stats + * .../bdi - symlink to ../../bdi/something + */ + +static struct dentry *ceph_debugfs_dir; + +static int monmap_show(struct seq_file *s, void *p) +{ + int i; + struct ceph_client *client = s->private; + + if (client->monc.monmap == NULL) + return 0; + + seq_printf(s, "epoch %d\n", client->monc.monmap->epoch); + for (i = 0; i < client->monc.monmap->num_mon; i++) { + struct ceph_entity_inst *inst = + &client->monc.monmap->mon_inst[i]; + + seq_printf(s, "\t%s%lld\t%s\n", + ENTITY_NAME(inst->name), + ceph_pr_addr(&inst->addr.in_addr)); + } + return 0; +} + +static int osdmap_show(struct seq_file *s, void *p) +{ + int i; + struct ceph_client *client = s->private; + struct rb_node *n; + + if (client->osdc.osdmap == NULL) + return 0; + seq_printf(s, "epoch %d\n", client->osdc.osdmap->epoch); + seq_printf(s, "flags%s%s\n", + (client->osdc.osdmap->flags & CEPH_OSDMAP_NEARFULL) ? + " NEARFULL" : "", + (client->osdc.osdmap->flags & CEPH_OSDMAP_FULL) ? + " FULL" : ""); + for (n = rb_first(&client->osdc.osdmap->pg_pools); n; n = rb_next(n)) { + struct ceph_pg_pool_info *pool = + rb_entry(n, struct ceph_pg_pool_info, node); + seq_printf(s, "pg_pool %d pg_num %d / %d, lpg_num %d / %d\n", + pool->id, pool->v.pg_num, pool->pg_num_mask, + pool->v.lpg_num, pool->lpg_num_mask); + } + for (i = 0; i < client->osdc.osdmap->max_osd; i++) { + struct ceph_entity_addr *addr = + &client->osdc.osdmap->osd_addr[i]; + int state = client->osdc.osdmap->osd_state[i]; + char sb[64]; + + seq_printf(s, "\tosd%d\t%s\t%3d%%\t(%s)\n", + i, ceph_pr_addr(&addr->in_addr), + ((client->osdc.osdmap->osd_weight[i]*100) >> 16), + ceph_osdmap_state_str(sb, sizeof(sb), state)); + } + return 0; +} + +static int monc_show(struct seq_file *s, void *p) +{ + struct ceph_client *client = s->private; + struct ceph_mon_generic_request *req; + struct ceph_mon_client *monc = &client->monc; + struct rb_node *rp; + + mutex_lock(&monc->mutex); + + if (monc->have_mdsmap) + seq_printf(s, "have mdsmap %u\n", (unsigned)monc->have_mdsmap); + if (monc->have_osdmap) + seq_printf(s, "have osdmap %u\n", (unsigned)monc->have_osdmap); + if (monc->want_next_osdmap) + seq_printf(s, "want next osdmap\n"); + + for (rp = rb_first(&monc->generic_request_tree); rp; rp = rb_next(rp)) { + __u16 op; + req = rb_entry(rp, struct ceph_mon_generic_request, node); + op = le16_to_cpu(req->request->hdr.type); + if (op == CEPH_MSG_STATFS) + seq_printf(s, "%lld statfs\n", req->tid); + else + seq_printf(s, "%lld unknown\n", req->tid); + } + + mutex_unlock(&monc->mutex); + return 0; +} + +static int osdc_show(struct seq_file *s, void *pp) +{ + struct ceph_client *client = s->private; + struct ceph_osd_client *osdc = &client->osdc; + struct rb_node *p; + + mutex_lock(&osdc->request_mutex); + for (p = rb_first(&osdc->requests); p; p = rb_next(p)) { + struct ceph_osd_request *req; + struct ceph_osd_request_head *head; + struct ceph_osd_op *op; + int num_ops; + int opcode, olen; + int i; + + req = rb_entry(p, struct ceph_osd_request, r_node); + + seq_printf(s, "%lld\tosd%d\t%d.%x\t", req->r_tid, + req->r_osd ? req->r_osd->o_osd : -1, + le32_to_cpu(req->r_pgid.pool), + le16_to_cpu(req->r_pgid.ps)); + + head = req->r_request->front.iov_base; + op = (void *)(head + 1); + + num_ops = le16_to_cpu(head->num_ops); + olen = le32_to_cpu(head->object_len); + seq_printf(s, "%.*s", olen, + (const char *)(head->ops + num_ops)); + + if (req->r_reassert_version.epoch) + seq_printf(s, "\t%u'%llu", + (unsigned)le32_to_cpu(req->r_reassert_version.epoch), + le64_to_cpu(req->r_reassert_version.version)); + else + seq_printf(s, "\t"); + + for (i = 0; i < num_ops; i++) { + opcode = le16_to_cpu(op->op); + seq_printf(s, "\t%s", ceph_osd_op_name(opcode)); + op++; + } + + seq_printf(s, "\n"); + } + mutex_unlock(&osdc->request_mutex); + return 0; +} + +CEPH_DEFINE_SHOW_FUNC(monmap_show) +CEPH_DEFINE_SHOW_FUNC(osdmap_show) +CEPH_DEFINE_SHOW_FUNC(monc_show) +CEPH_DEFINE_SHOW_FUNC(osdc_show) + +int ceph_debugfs_init(void) +{ + ceph_debugfs_dir = debugfs_create_dir("ceph", NULL); + if (!ceph_debugfs_dir) + return -ENOMEM; + return 0; +} + +void ceph_debugfs_cleanup(void) +{ + debugfs_remove(ceph_debugfs_dir); +} + +int ceph_debugfs_client_init(struct ceph_client *client) +{ + int ret = -ENOMEM; + char name[80]; + + snprintf(name, sizeof(name), "%pU.client%lld", &client->fsid, + client->monc.auth->global_id); + + client->debugfs_dir = debugfs_create_dir(name, ceph_debugfs_dir); + if (!client->debugfs_dir) + goto out; + + client->monc.debugfs_file = debugfs_create_file("monc", + 0600, + client->debugfs_dir, + client, + &monc_show_fops); + if (!client->monc.debugfs_file) + goto out; + + client->osdc.debugfs_file = debugfs_create_file("osdc", + 0600, + client->debugfs_dir, + client, + &osdc_show_fops); + if (!client->osdc.debugfs_file) + goto out; + + client->debugfs_monmap = debugfs_create_file("monmap", + 0600, + client->debugfs_dir, + client, + &monmap_show_fops); + if (!client->debugfs_monmap) + goto out; + + client->debugfs_osdmap = debugfs_create_file("osdmap", + 0600, + client->debugfs_dir, + client, + &osdmap_show_fops); + if (!client->debugfs_osdmap) + goto out; + + return 0; + +out: + ceph_debugfs_client_cleanup(client); + return ret; +} + +void ceph_debugfs_client_cleanup(struct ceph_client *client) +{ + debugfs_remove(client->debugfs_osdmap); + debugfs_remove(client->debugfs_monmap); + debugfs_remove(client->osdc.debugfs_file); + debugfs_remove(client->monc.debugfs_file); + debugfs_remove(client->debugfs_dir); +} + +#else /* CONFIG_DEBUG_FS */ + +int ceph_debugfs_init(void) +{ + return 0; +} + +void ceph_debugfs_cleanup(void) +{ +} + +int ceph_debugfs_client_init(struct ceph_client *client) +{ + return 0; +} + +void ceph_debugfs_client_cleanup(struct ceph_client *client) +{ +} + +#endif /* CONFIG_DEBUG_FS */ + +EXPORT_SYMBOL(ceph_debugfs_init); +EXPORT_SYMBOL(ceph_debugfs_cleanup); diff --git a/fs/ceph/messenger.c b/net/ceph/messenger.c index 2502d76fcec1..0e8157ee5d43 100644 --- a/fs/ceph/messenger.c +++ b/net/ceph/messenger.c @@ -1,4 +1,4 @@ -#include "ceph_debug.h" +#include <linux/ceph/ceph_debug.h> #include <linux/crc32c.h> #include <linux/ctype.h> @@ -9,12 +9,14 @@ #include <linux/slab.h> #include <linux/socket.h> #include <linux/string.h> +#include <linux/bio.h> +#include <linux/blkdev.h> #include <net/tcp.h> -#include "super.h" -#include "messenger.h" -#include "decode.h" -#include "pagelist.h" +#include <linux/ceph/libceph.h> +#include <linux/ceph/messenger.h> +#include <linux/ceph/decode.h> +#include <linux/ceph/pagelist.h> /* * Ceph uses the messenger to exchange ceph_msg messages with other @@ -48,7 +50,7 @@ static char addr_str[MAX_ADDR_STR][MAX_ADDR_STR_LEN]; static DEFINE_SPINLOCK(addr_str_lock); static int last_addr_str; -const char *pr_addr(const struct sockaddr_storage *ss) +const char *ceph_pr_addr(const struct sockaddr_storage *ss) { int i; char *s; @@ -79,6 +81,7 @@ const char *pr_addr(const struct sockaddr_storage *ss) return s; } +EXPORT_SYMBOL(ceph_pr_addr); static void encode_my_addr(struct ceph_messenger *msgr) { @@ -91,7 +94,7 @@ static void encode_my_addr(struct ceph_messenger *msgr) */ struct workqueue_struct *ceph_msgr_wq; -int __init ceph_msgr_init(void) +int ceph_msgr_init(void) { ceph_msgr_wq = create_workqueue("ceph-msgr"); if (IS_ERR(ceph_msgr_wq)) { @@ -102,16 +105,19 @@ int __init ceph_msgr_init(void) } return 0; } +EXPORT_SYMBOL(ceph_msgr_init); void ceph_msgr_exit(void) { destroy_workqueue(ceph_msgr_wq); } +EXPORT_SYMBOL(ceph_msgr_exit); void ceph_msgr_flush(void) { flush_workqueue(ceph_msgr_wq); } +EXPORT_SYMBOL(ceph_msgr_flush); /* @@ -221,19 +227,19 @@ static struct socket *ceph_tcp_connect(struct ceph_connection *con) set_sock_callbacks(sock, con); - dout("connect %s\n", pr_addr(&con->peer_addr.in_addr)); + dout("connect %s\n", ceph_pr_addr(&con->peer_addr.in_addr)); ret = sock->ops->connect(sock, (struct sockaddr *)paddr, sizeof(*paddr), O_NONBLOCK); if (ret == -EINPROGRESS) { dout("connect %s EINPROGRESS sk_state = %u\n", - pr_addr(&con->peer_addr.in_addr), + ceph_pr_addr(&con->peer_addr.in_addr), sock->sk->sk_state); ret = 0; } if (ret < 0) { pr_err("connect %s error %d\n", - pr_addr(&con->peer_addr.in_addr), ret); + ceph_pr_addr(&con->peer_addr.in_addr), ret); sock_release(sock); con->sock = NULL; con->error_msg = "connect error"; @@ -334,7 +340,8 @@ static void reset_connection(struct ceph_connection *con) */ void ceph_con_close(struct ceph_connection *con) { - dout("con_close %p peer %s\n", con, pr_addr(&con->peer_addr.in_addr)); + dout("con_close %p peer %s\n", con, + ceph_pr_addr(&con->peer_addr.in_addr)); set_bit(CLOSED, &con->state); /* in case there's queued work */ clear_bit(STANDBY, &con->state); /* avoid connect_seq bump */ clear_bit(LOSSYTX, &con->state); /* so we retry next connect */ @@ -347,19 +354,21 @@ void ceph_con_close(struct ceph_connection *con) mutex_unlock(&con->mutex); queue_con(con); } +EXPORT_SYMBOL(ceph_con_close); /* * Reopen a closed connection, with a new peer address. */ void ceph_con_open(struct ceph_connection *con, struct ceph_entity_addr *addr) { - dout("con_open %p %s\n", con, pr_addr(&addr->in_addr)); + dout("con_open %p %s\n", con, ceph_pr_addr(&addr->in_addr)); set_bit(OPENING, &con->state); clear_bit(CLOSED, &con->state); memcpy(&con->peer_addr, addr, sizeof(*addr)); con->delay = 0; /* reset backoff memory */ queue_con(con); } +EXPORT_SYMBOL(ceph_con_open); /* * return true if this connection ever successfully opened @@ -406,6 +415,7 @@ void ceph_con_init(struct ceph_messenger *msgr, struct ceph_connection *con) INIT_LIST_HEAD(&con->out_sent); INIT_DELAYED_WORK(&con->work, con_work); } +EXPORT_SYMBOL(ceph_con_init); /* @@ -529,8 +539,11 @@ static void prepare_write_message(struct ceph_connection *con) if (le32_to_cpu(m->hdr.data_len) > 0) { /* initialize page iterator */ con->out_msg_pos.page = 0; - con->out_msg_pos.page_pos = - le16_to_cpu(m->hdr.data_off) & ~PAGE_MASK; + if (m->pages) + con->out_msg_pos.page_pos = + le16_to_cpu(m->hdr.data_off) & ~PAGE_MASK; + else + con->out_msg_pos.page_pos = 0; con->out_msg_pos.data_pos = 0; con->out_msg_pos.did_page_crc = 0; con->out_more = 1; /* data + footer will follow */ @@ -647,7 +660,7 @@ static void prepare_write_connect(struct ceph_messenger *msgr, dout("prepare_write_connect %p cseq=%d gseq=%d proto=%d\n", con, con->connect_seq, global_seq, proto); - con->out_connect.features = cpu_to_le64(CEPH_FEATURE_SUPPORTED); + con->out_connect.features = cpu_to_le64(msgr->supported_features); con->out_connect.host_type = cpu_to_le32(CEPH_ENTITY_TYPE_CLIENT); con->out_connect.connect_seq = cpu_to_le32(con->connect_seq); con->out_connect.global_seq = cpu_to_le32(global_seq); @@ -712,6 +725,31 @@ out: return ret; /* done! */ } +#ifdef CONFIG_BLOCK +static void init_bio_iter(struct bio *bio, struct bio **iter, int *seg) +{ + if (!bio) { + *iter = NULL; + *seg = 0; + return; + } + *iter = bio; + *seg = bio->bi_idx; +} + +static void iter_bio_next(struct bio **bio_iter, int *seg) +{ + if (*bio_iter == NULL) + return; + + BUG_ON(*seg >= (*bio_iter)->bi_vcnt); + + (*seg)++; + if (*seg == (*bio_iter)->bi_vcnt) + init_bio_iter((*bio_iter)->bi_next, bio_iter, seg); +} +#endif + /* * Write as much message data payload as we can. If we finish, queue * up the footer. @@ -726,21 +764,46 @@ static int write_partial_msg_pages(struct ceph_connection *con) size_t len; int crc = con->msgr->nocrc; int ret; + int total_max_write; + int in_trail = 0; + size_t trail_len = (msg->trail ? msg->trail->length : 0); dout("write_partial_msg_pages %p msg %p page %d/%d offset %d\n", con, con->out_msg, con->out_msg_pos.page, con->out_msg->nr_pages, con->out_msg_pos.page_pos); - while (con->out_msg_pos.page < con->out_msg->nr_pages) { +#ifdef CONFIG_BLOCK + if (msg->bio && !msg->bio_iter) + init_bio_iter(msg->bio, &msg->bio_iter, &msg->bio_seg); +#endif + + while (data_len > con->out_msg_pos.data_pos) { struct page *page = NULL; void *kaddr = NULL; + int max_write = PAGE_SIZE; + int page_shift = 0; + + total_max_write = data_len - trail_len - + con->out_msg_pos.data_pos; /* * if we are calculating the data crc (the default), we need * to map the page. if our pages[] has been revoked, use the * zero page. */ - if (msg->pages) { + + /* have we reached the trail part of the data? */ + if (con->out_msg_pos.data_pos >= data_len - trail_len) { + in_trail = 1; + + total_max_write = data_len - con->out_msg_pos.data_pos; + + page = list_first_entry(&msg->trail->head, + struct page, lru); + if (crc) + kaddr = kmap(page); + max_write = PAGE_SIZE; + } else if (msg->pages) { page = msg->pages[con->out_msg_pos.page]; if (crc) kaddr = kmap(page); @@ -749,13 +812,25 @@ static int write_partial_msg_pages(struct ceph_connection *con) struct page, lru); if (crc) kaddr = kmap(page); +#ifdef CONFIG_BLOCK + } else if (msg->bio) { + struct bio_vec *bv; + + bv = bio_iovec_idx(msg->bio_iter, msg->bio_seg); + page = bv->bv_page; + page_shift = bv->bv_offset; + if (crc) + kaddr = kmap(page) + page_shift; + max_write = bv->bv_len; +#endif } else { page = con->msgr->zero_page; if (crc) kaddr = page_address(con->msgr->zero_page); } - len = min((int)(PAGE_SIZE - con->out_msg_pos.page_pos), - (int)(data_len - con->out_msg_pos.data_pos)); + len = min_t(int, max_write - con->out_msg_pos.page_pos, + total_max_write); + if (crc && !con->out_msg_pos.did_page_crc) { void *base = kaddr + con->out_msg_pos.page_pos; u32 tmpcrc = le32_to_cpu(con->out_msg->footer.data_crc); @@ -765,13 +840,14 @@ static int write_partial_msg_pages(struct ceph_connection *con) cpu_to_le32(crc32c(tmpcrc, base, len)); con->out_msg_pos.did_page_crc = 1; } - ret = kernel_sendpage(con->sock, page, - con->out_msg_pos.page_pos, len, + con->out_msg_pos.page_pos + page_shift, + len, MSG_DONTWAIT | MSG_NOSIGNAL | MSG_MORE); - if (crc && (msg->pages || msg->pagelist)) + if (crc && + (msg->pages || msg->pagelist || msg->bio || in_trail)) kunmap(page); if (ret <= 0) @@ -783,9 +859,16 @@ static int write_partial_msg_pages(struct ceph_connection *con) con->out_msg_pos.page_pos = 0; con->out_msg_pos.page++; con->out_msg_pos.did_page_crc = 0; - if (msg->pagelist) + if (in_trail) + list_move_tail(&page->lru, + &msg->trail->head); + else if (msg->pagelist) list_move_tail(&page->lru, &msg->pagelist->head); +#ifdef CONFIG_BLOCK + else if (msg->bio) + iter_bio_next(&msg->bio_iter, &msg->bio_seg); +#endif } } @@ -938,7 +1021,7 @@ static int verify_hello(struct ceph_connection *con) { if (memcmp(con->in_banner, CEPH_BANNER, strlen(CEPH_BANNER))) { pr_err("connect to %s got bad banner\n", - pr_addr(&con->peer_addr.in_addr)); + ceph_pr_addr(&con->peer_addr.in_addr)); con->error_msg = "protocol error, bad banner"; return -1; } @@ -1041,7 +1124,7 @@ int ceph_parse_ips(const char *c, const char *end, addr_set_port(ss, port); - dout("parse_ips got %s\n", pr_addr(ss)); + dout("parse_ips got %s\n", ceph_pr_addr(ss)); if (p == end) break; @@ -1061,6 +1144,7 @@ bad: pr_err("parse_ips bad ip '%.*s'\n", (int)(end - c), c); return -EINVAL; } +EXPORT_SYMBOL(ceph_parse_ips); static int process_banner(struct ceph_connection *con) { @@ -1082,9 +1166,9 @@ static int process_banner(struct ceph_connection *con) !(addr_is_blank(&con->actual_peer_addr.in_addr) && con->actual_peer_addr.nonce == con->peer_addr.nonce)) { pr_warning("wrong peer, want %s/%d, got %s/%d\n", - pr_addr(&con->peer_addr.in_addr), + ceph_pr_addr(&con->peer_addr.in_addr), (int)le32_to_cpu(con->peer_addr.nonce), - pr_addr(&con->actual_peer_addr.in_addr), + ceph_pr_addr(&con->actual_peer_addr.in_addr), (int)le32_to_cpu(con->actual_peer_addr.nonce)); con->error_msg = "wrong peer at address"; return -1; @@ -1102,7 +1186,7 @@ static int process_banner(struct ceph_connection *con) addr_set_port(&con->msgr->inst.addr.in_addr, port); encode_my_addr(con->msgr); dout("process_banner learned my addr is %s\n", - pr_addr(&con->msgr->inst.addr.in_addr)); + ceph_pr_addr(&con->msgr->inst.addr.in_addr)); } set_bit(NEGOTIATING, &con->state); @@ -1123,8 +1207,8 @@ static void fail_protocol(struct ceph_connection *con) static int process_connect(struct ceph_connection *con) { - u64 sup_feat = CEPH_FEATURE_SUPPORTED; - u64 req_feat = CEPH_FEATURE_REQUIRED; + u64 sup_feat = con->msgr->supported_features; + u64 req_feat = con->msgr->required_features; u64 server_feat = le64_to_cpu(con->in_reply.features); dout("process_connect on %p tag %d\n", con, (int)con->in_tag); @@ -1134,7 +1218,7 @@ static int process_connect(struct ceph_connection *con) pr_err("%s%lld %s feature set mismatch," " my %llx < server's %llx, missing %llx\n", ENTITY_NAME(con->peer_name), - pr_addr(&con->peer_addr.in_addr), + ceph_pr_addr(&con->peer_addr.in_addr), sup_feat, server_feat, server_feat & ~sup_feat); con->error_msg = "missing required protocol features"; fail_protocol(con); @@ -1144,7 +1228,7 @@ static int process_connect(struct ceph_connection *con) pr_err("%s%lld %s protocol version mismatch," " my %d != server's %d\n", ENTITY_NAME(con->peer_name), - pr_addr(&con->peer_addr.in_addr), + ceph_pr_addr(&con->peer_addr.in_addr), le32_to_cpu(con->out_connect.protocol_version), le32_to_cpu(con->in_reply.protocol_version)); con->error_msg = "protocol version mismatch"; @@ -1178,7 +1262,7 @@ static int process_connect(struct ceph_connection *con) le32_to_cpu(con->in_connect.connect_seq)); pr_err("%s%lld %s connection reset\n", ENTITY_NAME(con->peer_name), - pr_addr(&con->peer_addr.in_addr)); + ceph_pr_addr(&con->peer_addr.in_addr)); reset_connection(con); prepare_write_connect(con->msgr, con, 0); prepare_read_connect(con); @@ -1223,7 +1307,7 @@ static int process_connect(struct ceph_connection *con) pr_err("%s%lld %s protocol feature mismatch," " my required %llx > server's %llx, need %llx\n", ENTITY_NAME(con->peer_name), - pr_addr(&con->peer_addr.in_addr), + ceph_pr_addr(&con->peer_addr.in_addr), req_feat, server_feat, req_feat & ~server_feat); con->error_msg = "missing required protocol features"; fail_protocol(con); @@ -1305,8 +1389,7 @@ static int read_partial_message_section(struct ceph_connection *con, struct kvec *section, unsigned int sec_len, u32 *crc) { - int left; - int ret; + int ret, left; BUG_ON(!section); @@ -1329,13 +1412,83 @@ static int read_partial_message_section(struct ceph_connection *con, static struct ceph_msg *ceph_alloc_msg(struct ceph_connection *con, struct ceph_msg_header *hdr, int *skip); + + +static int read_partial_message_pages(struct ceph_connection *con, + struct page **pages, + unsigned data_len, int datacrc) +{ + void *p; + int ret; + int left; + + left = min((int)(data_len - con->in_msg_pos.data_pos), + (int)(PAGE_SIZE - con->in_msg_pos.page_pos)); + /* (page) data */ + BUG_ON(pages == NULL); + p = kmap(pages[con->in_msg_pos.page]); + ret = ceph_tcp_recvmsg(con->sock, p + con->in_msg_pos.page_pos, + left); + if (ret > 0 && datacrc) + con->in_data_crc = + crc32c(con->in_data_crc, + p + con->in_msg_pos.page_pos, ret); + kunmap(pages[con->in_msg_pos.page]); + if (ret <= 0) + return ret; + con->in_msg_pos.data_pos += ret; + con->in_msg_pos.page_pos += ret; + if (con->in_msg_pos.page_pos == PAGE_SIZE) { + con->in_msg_pos.page_pos = 0; + con->in_msg_pos.page++; + } + + return ret; +} + +#ifdef CONFIG_BLOCK +static int read_partial_message_bio(struct ceph_connection *con, + struct bio **bio_iter, int *bio_seg, + unsigned data_len, int datacrc) +{ + struct bio_vec *bv = bio_iovec_idx(*bio_iter, *bio_seg); + void *p; + int ret, left; + + if (IS_ERR(bv)) + return PTR_ERR(bv); + + left = min((int)(data_len - con->in_msg_pos.data_pos), + (int)(bv->bv_len - con->in_msg_pos.page_pos)); + + p = kmap(bv->bv_page) + bv->bv_offset; + + ret = ceph_tcp_recvmsg(con->sock, p + con->in_msg_pos.page_pos, + left); + if (ret > 0 && datacrc) + con->in_data_crc = + crc32c(con->in_data_crc, + p + con->in_msg_pos.page_pos, ret); + kunmap(bv->bv_page); + if (ret <= 0) + return ret; + con->in_msg_pos.data_pos += ret; + con->in_msg_pos.page_pos += ret; + if (con->in_msg_pos.page_pos == bv->bv_len) { + con->in_msg_pos.page_pos = 0; + iter_bio_next(bio_iter, bio_seg); + } + + return ret; +} +#endif + /* * read (part of) a message. */ static int read_partial_message(struct ceph_connection *con) { struct ceph_msg *m = con->in_msg; - void *p; int ret; int to, left; unsigned front_len, middle_len, data_len, data_off; @@ -1381,7 +1534,7 @@ static int read_partial_message(struct ceph_connection *con) if ((s64)seq - (s64)con->in_seq < 1) { pr_info("skipping %s%lld %s seq %lld, expected %lld\n", ENTITY_NAME(con->peer_name), - pr_addr(&con->peer_addr.in_addr), + ceph_pr_addr(&con->peer_addr.in_addr), seq, con->in_seq + 1); con->in_base_pos = -front_len - middle_len - data_len - sizeof(m->footer); @@ -1422,7 +1575,10 @@ static int read_partial_message(struct ceph_connection *con) m->middle->vec.iov_len = 0; con->in_msg_pos.page = 0; - con->in_msg_pos.page_pos = data_off & ~PAGE_MASK; + if (m->pages) + con->in_msg_pos.page_pos = data_off & ~PAGE_MASK; + else + con->in_msg_pos.page_pos = 0; con->in_msg_pos.data_pos = 0; } @@ -1440,27 +1596,29 @@ static int read_partial_message(struct ceph_connection *con) if (ret <= 0) return ret; } +#ifdef CONFIG_BLOCK + if (m->bio && !m->bio_iter) + init_bio_iter(m->bio, &m->bio_iter, &m->bio_seg); +#endif /* (page) data */ while (con->in_msg_pos.data_pos < data_len) { - left = min((int)(data_len - con->in_msg_pos.data_pos), - (int)(PAGE_SIZE - con->in_msg_pos.page_pos)); - BUG_ON(m->pages == NULL); - p = kmap(m->pages[con->in_msg_pos.page]); - ret = ceph_tcp_recvmsg(con->sock, p + con->in_msg_pos.page_pos, - left); - if (ret > 0 && datacrc) - con->in_data_crc = - crc32c(con->in_data_crc, - p + con->in_msg_pos.page_pos, ret); - kunmap(m->pages[con->in_msg_pos.page]); - if (ret <= 0) - return ret; - con->in_msg_pos.data_pos += ret; - con->in_msg_pos.page_pos += ret; - if (con->in_msg_pos.page_pos == PAGE_SIZE) { - con->in_msg_pos.page_pos = 0; - con->in_msg_pos.page++; + if (m->pages) { + ret = read_partial_message_pages(con, m->pages, + data_len, datacrc); + if (ret <= 0) + return ret; +#ifdef CONFIG_BLOCK + } else if (m->bio) { + + ret = read_partial_message_bio(con, + &m->bio_iter, &m->bio_seg, + data_len, datacrc); + if (ret <= 0) + return ret; +#endif + } else { + BUG_ON(1); } } @@ -1874,9 +2032,9 @@ out: static void ceph_fault(struct ceph_connection *con) { pr_err("%s%lld %s %s\n", ENTITY_NAME(con->peer_name), - pr_addr(&con->peer_addr.in_addr), con->error_msg); + ceph_pr_addr(&con->peer_addr.in_addr), con->error_msg); dout("fault %p state %lu to peer %s\n", - con, con->state, pr_addr(&con->peer_addr.in_addr)); + con, con->state, ceph_pr_addr(&con->peer_addr.in_addr)); if (test_bit(LOSSYTX, &con->state)) { dout("fault on LOSSYTX channel\n"); @@ -1936,7 +2094,9 @@ out: /* * create a new messenger instance */ -struct ceph_messenger *ceph_messenger_create(struct ceph_entity_addr *myaddr) +struct ceph_messenger *ceph_messenger_create(struct ceph_entity_addr *myaddr, + u32 supported_features, + u32 required_features) { struct ceph_messenger *msgr; @@ -1944,6 +2104,9 @@ struct ceph_messenger *ceph_messenger_create(struct ceph_entity_addr *myaddr) if (msgr == NULL) return ERR_PTR(-ENOMEM); + msgr->supported_features = supported_features; + msgr->required_features = required_features; + spin_lock_init(&msgr->global_seq_lock); /* the zero page is needed if a request is "canceled" while the message @@ -1966,6 +2129,7 @@ struct ceph_messenger *ceph_messenger_create(struct ceph_entity_addr *myaddr) dout("messenger_create %p\n", msgr); return msgr; } +EXPORT_SYMBOL(ceph_messenger_create); void ceph_messenger_destroy(struct ceph_messenger *msgr) { @@ -1975,6 +2139,7 @@ void ceph_messenger_destroy(struct ceph_messenger *msgr) kfree(msgr); dout("destroyed messenger %p\n", msgr); } +EXPORT_SYMBOL(ceph_messenger_destroy); /* * Queue up an outgoing message on the given connection. @@ -2011,6 +2176,7 @@ void ceph_con_send(struct ceph_connection *con, struct ceph_msg *msg) if (test_and_set_bit(WRITE_PENDING, &con->state) == 0) queue_con(con); } +EXPORT_SYMBOL(ceph_con_send); /* * Revoke a message that was previously queued for send @@ -2076,6 +2242,7 @@ void ceph_con_keepalive(struct ceph_connection *con) test_and_set_bit(WRITE_PENDING, &con->state) == 0) queue_con(con); } +EXPORT_SYMBOL(ceph_con_keepalive); /* @@ -2136,6 +2303,10 @@ struct ceph_msg *ceph_msg_new(int type, int front_len, gfp_t flags) m->nr_pages = 0; m->pages = NULL; m->pagelist = NULL; + m->bio = NULL; + m->bio_iter = NULL; + m->bio_seg = 0; + m->trail = NULL; dout("ceph_msg_new %p front %d\n", m, front_len); return m; @@ -2146,6 +2317,7 @@ out: pr_err("msg_new can't create type %d front %d\n", type, front_len); return NULL; } +EXPORT_SYMBOL(ceph_msg_new); /* * Allocate "middle" portion of a message, if it is needed and wasn't @@ -2250,11 +2422,14 @@ void ceph_msg_last_put(struct kref *kref) m->pagelist = NULL; } + m->trail = NULL; + if (m->pool) ceph_msgpool_put(m->pool, m); else ceph_msg_kfree(m); } +EXPORT_SYMBOL(ceph_msg_last_put); void ceph_msg_dump(struct ceph_msg *msg) { @@ -2275,3 +2450,4 @@ void ceph_msg_dump(struct ceph_msg *msg) DUMP_PREFIX_OFFSET, 16, 1, &msg->footer, sizeof(msg->footer), true); } +EXPORT_SYMBOL(ceph_msg_dump); diff --git a/fs/ceph/mon_client.c b/net/ceph/mon_client.c index b2a5a3e4a671..8a079399174a 100644 --- a/fs/ceph/mon_client.c +++ b/net/ceph/mon_client.c @@ -1,14 +1,16 @@ -#include "ceph_debug.h" +#include <linux/ceph/ceph_debug.h> +#include <linux/module.h> #include <linux/types.h> #include <linux/slab.h> #include <linux/random.h> #include <linux/sched.h> -#include "mon_client.h" -#include "super.h" -#include "auth.h" -#include "decode.h" +#include <linux/ceph/mon_client.h> +#include <linux/ceph/libceph.h> +#include <linux/ceph/decode.h> + +#include <linux/ceph/auth.h> /* * Interact with Ceph monitor cluster. Handle requests for new map @@ -74,7 +76,7 @@ struct ceph_monmap *ceph_monmap_decode(void *p, void *end) m->num_mon); for (i = 0; i < m->num_mon; i++) dout("monmap_decode mon%d is %s\n", i, - pr_addr(&m->mon_inst[i].addr.in_addr)); + ceph_pr_addr(&m->mon_inst[i].addr.in_addr)); return m; bad: @@ -191,30 +193,33 @@ static void __send_subscribe(struct ceph_mon_client *monc) struct ceph_msg *msg = monc->m_subscribe; struct ceph_mon_subscribe_item *i; void *p, *end; + int num; p = msg->front.iov_base; end = p + msg->front_max; - dout("__send_subscribe to 'mdsmap' %u+\n", - (unsigned)monc->have_mdsmap); + num = 1 + !!monc->want_next_osdmap + !!monc->want_mdsmap; + ceph_encode_32(&p, num); + if (monc->want_next_osdmap) { dout("__send_subscribe to 'osdmap' %u\n", (unsigned)monc->have_osdmap); - ceph_encode_32(&p, 3); ceph_encode_string(&p, end, "osdmap", 6); i = p; i->have = cpu_to_le64(monc->have_osdmap); i->onetime = 1; p += sizeof(*i); monc->want_next_osdmap = 2; /* requested */ - } else { - ceph_encode_32(&p, 2); } - ceph_encode_string(&p, end, "mdsmap", 6); - i = p; - i->have = cpu_to_le64(monc->have_mdsmap); - i->onetime = 0; - p += sizeof(*i); + if (monc->want_mdsmap) { + dout("__send_subscribe to 'mdsmap' %u+\n", + (unsigned)monc->have_mdsmap); + ceph_encode_string(&p, end, "mdsmap", 6); + i = p; + i->have = cpu_to_le64(monc->have_mdsmap); + i->onetime = 0; + p += sizeof(*i); + } ceph_encode_string(&p, end, "monmap", 6); i = p; i->have = 0; @@ -243,7 +248,8 @@ static void handle_subscribe_ack(struct ceph_mon_client *monc, mutex_lock(&monc->mutex); if (monc->hunting) { pr_info("mon%d %s session established\n", - monc->cur_mon, pr_addr(&monc->con->peer_addr.in_addr)); + monc->cur_mon, + ceph_pr_addr(&monc->con->peer_addr.in_addr)); monc->hunting = false; } dout("handle_subscribe_ack after %d seconds\n", seconds); @@ -266,6 +272,7 @@ int ceph_monc_got_mdsmap(struct ceph_mon_client *monc, u32 got) mutex_unlock(&monc->mutex); return 0; } +EXPORT_SYMBOL(ceph_monc_got_mdsmap); int ceph_monc_got_osdmap(struct ceph_mon_client *monc, u32 got) { @@ -310,6 +317,7 @@ int ceph_monc_open_session(struct ceph_mon_client *monc) mutex_unlock(&monc->mutex); return 0; } +EXPORT_SYMBOL(ceph_monc_open_session); /* * The monitor responds with mount ack indicate mount success. The @@ -540,6 +548,7 @@ out: kref_put(&req->kref, release_generic_request); return err; } +EXPORT_SYMBOL(ceph_monc_do_statfs); /* * pool ops @@ -651,6 +660,7 @@ int ceph_monc_create_snapid(struct ceph_mon_client *monc, pool, 0, (char *)snapid, sizeof(*snapid)); } +EXPORT_SYMBOL(ceph_monc_create_snapid); int ceph_monc_delete_snapid(struct ceph_mon_client *monc, u32 pool, u64 snapid) @@ -708,9 +718,9 @@ static void delayed_work(struct work_struct *work) */ static int build_initial_monmap(struct ceph_mon_client *monc) { - struct ceph_mount_args *args = monc->client->mount_args; - struct ceph_entity_addr *mon_addr = args->mon_addr; - int num_mon = args->num_mon; + struct ceph_options *opt = monc->client->options; + struct ceph_entity_addr *mon_addr = opt->mon_addr; + int num_mon = opt->num_mon; int i; /* build initial monmap */ @@ -728,11 +738,6 @@ static int build_initial_monmap(struct ceph_mon_client *monc) } monc->monmap->num_mon = num_mon; monc->have_fsid = false; - - /* release addr memory */ - kfree(args->mon_addr); - args->mon_addr = NULL; - args->num_mon = 0; return 0; } @@ -753,8 +758,8 @@ int ceph_monc_init(struct ceph_mon_client *monc, struct ceph_client *cl) monc->con = NULL; /* authentication */ - monc->auth = ceph_auth_init(cl->mount_args->name, - cl->mount_args->secret); + monc->auth = ceph_auth_init(cl->options->name, + cl->options->secret); if (IS_ERR(monc->auth)) return PTR_ERR(monc->auth); monc->auth->want_keys = @@ -808,6 +813,7 @@ out_monmap: out: return err; } +EXPORT_SYMBOL(ceph_monc_init); void ceph_monc_stop(struct ceph_mon_client *monc) { @@ -832,6 +838,7 @@ void ceph_monc_stop(struct ceph_mon_client *monc) kfree(monc->monmap); } +EXPORT_SYMBOL(ceph_monc_stop); static void handle_auth_reply(struct ceph_mon_client *monc, struct ceph_msg *msg) @@ -889,6 +896,7 @@ int ceph_monc_validate_auth(struct ceph_mon_client *monc) mutex_unlock(&monc->mutex); return ret; } +EXPORT_SYMBOL(ceph_monc_validate_auth); /* * handle incoming message @@ -922,15 +930,16 @@ static void dispatch(struct ceph_connection *con, struct ceph_msg *msg) ceph_monc_handle_map(monc, msg); break; - case CEPH_MSG_MDS_MAP: - ceph_mdsc_handle_map(&monc->client->mdsc, msg); - break; - case CEPH_MSG_OSD_MAP: ceph_osdc_handle_map(&monc->client->osdc, msg); break; default: + /* can the chained handler handle it? */ + if (monc->client->extra_mon_dispatch && + monc->client->extra_mon_dispatch(monc->client, msg) == 0) + break; + pr_err("received unknown message type %d %s\n", type, ceph_msg_type_name(type)); } @@ -994,7 +1003,7 @@ static void mon_fault(struct ceph_connection *con) if (monc->con && !monc->hunting) pr_info("mon%d %s session lost, " "hunting for new mon\n", monc->cur_mon, - pr_addr(&monc->con->peer_addr.in_addr)); + ceph_pr_addr(&monc->con->peer_addr.in_addr)); __close_session(monc); if (!monc->hunting) { diff --git a/fs/ceph/msgpool.c b/net/ceph/msgpool.c index dd65a6438131..d5f2d97ac05c 100644 --- a/fs/ceph/msgpool.c +++ b/net/ceph/msgpool.c @@ -1,11 +1,11 @@ -#include "ceph_debug.h" +#include <linux/ceph/ceph_debug.h> #include <linux/err.h> #include <linux/sched.h> #include <linux/types.h> #include <linux/vmalloc.h> -#include "msgpool.h" +#include <linux/ceph/msgpool.h> static void *alloc_fn(gfp_t gfp_mask, void *arg) { diff --git a/fs/ceph/osd_client.c b/net/ceph/osd_client.c index 3b5571b8ce22..79391994b3ed 100644 --- a/fs/ceph/osd_client.c +++ b/net/ceph/osd_client.c @@ -1,17 +1,22 @@ -#include "ceph_debug.h" +#include <linux/ceph/ceph_debug.h> +#include <linux/module.h> #include <linux/err.h> #include <linux/highmem.h> #include <linux/mm.h> #include <linux/pagemap.h> #include <linux/slab.h> #include <linux/uaccess.h> +#ifdef CONFIG_BLOCK +#include <linux/bio.h> +#endif -#include "super.h" -#include "osd_client.h" -#include "messenger.h" -#include "decode.h" -#include "auth.h" +#include <linux/ceph/libceph.h> +#include <linux/ceph/osd_client.h> +#include <linux/ceph/messenger.h> +#include <linux/ceph/decode.h> +#include <linux/ceph/auth.h> +#include <linux/ceph/pagelist.h> #define OSD_OP_FRONT_LEN 4096 #define OSD_OPREPLY_FRONT_LEN 512 @@ -22,6 +27,59 @@ static int __kick_requests(struct ceph_osd_client *osdc, static void kick_requests(struct ceph_osd_client *osdc, struct ceph_osd *osd); +static int op_needs_trail(int op) +{ + switch (op) { + case CEPH_OSD_OP_GETXATTR: + case CEPH_OSD_OP_SETXATTR: + case CEPH_OSD_OP_CMPXATTR: + case CEPH_OSD_OP_CALL: + return 1; + default: + return 0; + } +} + +static int op_has_extent(int op) +{ + return (op == CEPH_OSD_OP_READ || + op == CEPH_OSD_OP_WRITE); +} + +void ceph_calc_raw_layout(struct ceph_osd_client *osdc, + struct ceph_file_layout *layout, + u64 snapid, + u64 off, u64 *plen, u64 *bno, + struct ceph_osd_request *req, + struct ceph_osd_req_op *op) +{ + struct ceph_osd_request_head *reqhead = req->r_request->front.iov_base; + u64 orig_len = *plen; + u64 objoff, objlen; /* extent in object */ + + reqhead->snapid = cpu_to_le64(snapid); + + /* object extent? */ + ceph_calc_file_object_mapping(layout, off, plen, bno, + &objoff, &objlen); + if (*plen < orig_len) + dout(" skipping last %llu, final file extent %llu~%llu\n", + orig_len - *plen, off, *plen); + + if (op_has_extent(op->op)) { + op->extent.offset = objoff; + op->extent.length = objlen; + } + req->r_num_pages = calc_pages_for(off, *plen); + if (op->op == CEPH_OSD_OP_WRITE) + op->payload_len = *plen; + + dout("calc_layout bno=%llx %llu~%llu (%d pages)\n", + *bno, objoff, objlen, req->r_num_pages); + +} +EXPORT_SYMBOL(ceph_calc_raw_layout); + /* * Implement client access to distributed object storage cluster. * @@ -48,34 +106,19 @@ static void kick_requests(struct ceph_osd_client *osdc, struct ceph_osd *osd); * fill osd op in request message. */ static void calc_layout(struct ceph_osd_client *osdc, - struct ceph_vino vino, struct ceph_file_layout *layout, + struct ceph_vino vino, + struct ceph_file_layout *layout, u64 off, u64 *plen, - struct ceph_osd_request *req) + struct ceph_osd_request *req, + struct ceph_osd_req_op *op) { - struct ceph_osd_request_head *reqhead = req->r_request->front.iov_base; - struct ceph_osd_op *op = (void *)(reqhead + 1); - u64 orig_len = *plen; - u64 objoff, objlen; /* extent in object */ u64 bno; - reqhead->snapid = cpu_to_le64(vino.snap); - - /* object extent? */ - ceph_calc_file_object_mapping(layout, off, plen, &bno, - &objoff, &objlen); - if (*plen < orig_len) - dout(" skipping last %llu, final file extent %llu~%llu\n", - orig_len - *plen, off, *plen); + ceph_calc_raw_layout(osdc, layout, vino.snap, off, + plen, &bno, req, op); sprintf(req->r_oid, "%llx.%08llx", vino.ino, bno); req->r_oid_len = strlen(req->r_oid); - - op->extent.offset = cpu_to_le64(objoff); - op->extent.length = cpu_to_le64(objlen); - req->r_num_pages = calc_pages_for(off, *plen); - - dout("calc_layout %s (%d) %llu~%llu (%d pages)\n", - req->r_oid, req->r_oid_len, objoff, objlen, req->r_num_pages); } /* @@ -101,56 +144,66 @@ void ceph_osdc_release_request(struct kref *kref) if (req->r_own_pages) ceph_release_page_vector(req->r_pages, req->r_num_pages); +#ifdef CONFIG_BLOCK + if (req->r_bio) + bio_put(req->r_bio); +#endif ceph_put_snap_context(req->r_snapc); + if (req->r_trail) { + ceph_pagelist_release(req->r_trail); + kfree(req->r_trail); + } if (req->r_mempool) mempool_free(req, req->r_osdc->req_mempool); else kfree(req); } +EXPORT_SYMBOL(ceph_osdc_release_request); -/* - * build new request AND message, calculate layout, and adjust file - * extent as needed. - * - * if the file was recently truncated, we include information about its - * old and new size so that the object can be updated appropriately. (we - * avoid synchronously deleting truncated objects because it's slow.) - * - * if @do_sync, include a 'startsync' command so that the osd will flush - * data quickly. - */ -struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *osdc, - struct ceph_file_layout *layout, - struct ceph_vino vino, - u64 off, u64 *plen, - int opcode, int flags, +static int get_num_ops(struct ceph_osd_req_op *ops, int *needs_trail) +{ + int i = 0; + + if (needs_trail) + *needs_trail = 0; + while (ops[i].op) { + if (needs_trail && op_needs_trail(ops[i].op)) + *needs_trail = 1; + i++; + } + + return i; +} + +struct ceph_osd_request *ceph_osdc_alloc_request(struct ceph_osd_client *osdc, + int flags, struct ceph_snap_context *snapc, - int do_sync, - u32 truncate_seq, - u64 truncate_size, - struct timespec *mtime, - bool use_mempool, int num_reply) + struct ceph_osd_req_op *ops, + bool use_mempool, + gfp_t gfp_flags, + struct page **pages, + struct bio *bio) { struct ceph_osd_request *req; struct ceph_msg *msg; - struct ceph_osd_request_head *head; - struct ceph_osd_op *op; - void *p; - int num_op = 1 + do_sync; - size_t msg_size = sizeof(*head) + num_op*sizeof(*op); - int i; + int needs_trail; + int num_op = get_num_ops(ops, &needs_trail); + size_t msg_size = sizeof(struct ceph_osd_request_head); + + msg_size += num_op*sizeof(struct ceph_osd_op); if (use_mempool) { - req = mempool_alloc(osdc->req_mempool, GFP_NOFS); + req = mempool_alloc(osdc->req_mempool, gfp_flags); memset(req, 0, sizeof(*req)); } else { - req = kzalloc(sizeof(*req), GFP_NOFS); + req = kzalloc(sizeof(*req), gfp_flags); } if (req == NULL) return NULL; req->r_osdc = osdc; req->r_mempool = use_mempool; + kref_init(&req->r_kref); init_completion(&req->r_completion); init_completion(&req->r_safe_completion); @@ -164,13 +217,22 @@ struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *osdc, msg = ceph_msgpool_get(&osdc->msgpool_op_reply, 0); else msg = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, - OSD_OPREPLY_FRONT_LEN, GFP_NOFS); + OSD_OPREPLY_FRONT_LEN, gfp_flags); if (!msg) { ceph_osdc_put_request(req); return NULL; } req->r_reply = msg; + /* allocate space for the trailing data */ + if (needs_trail) { + req->r_trail = kmalloc(sizeof(struct ceph_pagelist), gfp_flags); + if (!req->r_trail) { + ceph_osdc_put_request(req); + return NULL; + } + ceph_pagelist_init(req->r_trail); + } /* create request message; allow space for oid */ msg_size += 40; if (snapc) @@ -178,18 +240,115 @@ struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *osdc, if (use_mempool) msg = ceph_msgpool_get(&osdc->msgpool_op, 0); else - msg = ceph_msg_new(CEPH_MSG_OSD_OP, msg_size, GFP_NOFS); + msg = ceph_msg_new(CEPH_MSG_OSD_OP, msg_size, gfp_flags); if (!msg) { ceph_osdc_put_request(req); return NULL; } + msg->hdr.type = cpu_to_le16(CEPH_MSG_OSD_OP); memset(msg->front.iov_base, 0, msg->front.iov_len); + + req->r_request = msg; + req->r_pages = pages; +#ifdef CONFIG_BLOCK + if (bio) { + req->r_bio = bio; + bio_get(req->r_bio); + } +#endif + + return req; +} +EXPORT_SYMBOL(ceph_osdc_alloc_request); + +static void osd_req_encode_op(struct ceph_osd_request *req, + struct ceph_osd_op *dst, + struct ceph_osd_req_op *src) +{ + dst->op = cpu_to_le16(src->op); + + switch (dst->op) { + case CEPH_OSD_OP_READ: + case CEPH_OSD_OP_WRITE: + dst->extent.offset = + cpu_to_le64(src->extent.offset); + dst->extent.length = + cpu_to_le64(src->extent.length); + dst->extent.truncate_size = + cpu_to_le64(src->extent.truncate_size); + dst->extent.truncate_seq = + cpu_to_le32(src->extent.truncate_seq); + break; + + case CEPH_OSD_OP_GETXATTR: + case CEPH_OSD_OP_SETXATTR: + case CEPH_OSD_OP_CMPXATTR: + BUG_ON(!req->r_trail); + + dst->xattr.name_len = cpu_to_le32(src->xattr.name_len); + dst->xattr.value_len = cpu_to_le32(src->xattr.value_len); + dst->xattr.cmp_op = src->xattr.cmp_op; + dst->xattr.cmp_mode = src->xattr.cmp_mode; + ceph_pagelist_append(req->r_trail, src->xattr.name, + src->xattr.name_len); + ceph_pagelist_append(req->r_trail, src->xattr.val, + src->xattr.value_len); + break; + case CEPH_OSD_OP_CALL: + BUG_ON(!req->r_trail); + + dst->cls.class_len = src->cls.class_len; + dst->cls.method_len = src->cls.method_len; + dst->cls.indata_len = cpu_to_le32(src->cls.indata_len); + + ceph_pagelist_append(req->r_trail, src->cls.class_name, + src->cls.class_len); + ceph_pagelist_append(req->r_trail, src->cls.method_name, + src->cls.method_len); + ceph_pagelist_append(req->r_trail, src->cls.indata, + src->cls.indata_len); + break; + case CEPH_OSD_OP_ROLLBACK: + dst->snap.snapid = cpu_to_le64(src->snap.snapid); + break; + case CEPH_OSD_OP_STARTSYNC: + break; + default: + pr_err("unrecognized osd opcode %d\n", dst->op); + WARN_ON(1); + break; + } + dst->payload_len = cpu_to_le32(src->payload_len); +} + +/* + * build new request AND message + * + */ +void ceph_osdc_build_request(struct ceph_osd_request *req, + u64 off, u64 *plen, + struct ceph_osd_req_op *src_ops, + struct ceph_snap_context *snapc, + struct timespec *mtime, + const char *oid, + int oid_len) +{ + struct ceph_msg *msg = req->r_request; + struct ceph_osd_request_head *head; + struct ceph_osd_req_op *src_op; + struct ceph_osd_op *op; + void *p; + int num_op = get_num_ops(src_ops, NULL); + size_t msg_size = sizeof(*head) + num_op*sizeof(*op); + int flags = req->r_flags; + u64 data_len = 0; + int i; + head = msg->front.iov_base; op = (void *)(head + 1); p = (void *)(op + num_op); - req->r_request = msg; req->r_snapc = ceph_get_snap_context(snapc); head->client_inc = cpu_to_le32(1); /* always, for now. */ @@ -197,29 +356,23 @@ struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *osdc, if (flags & CEPH_OSD_FLAG_WRITE) ceph_encode_timespec(&head->mtime, mtime); head->num_ops = cpu_to_le16(num_op); - op->op = cpu_to_le16(opcode); - /* calculate max write size */ - calc_layout(osdc, vino, layout, off, plen, req); - req->r_file_layout = *layout; /* keep a copy */ - - if (flags & CEPH_OSD_FLAG_WRITE) { - req->r_request->hdr.data_off = cpu_to_le16(off); - req->r_request->hdr.data_len = cpu_to_le32(*plen); - op->payload_len = cpu_to_le32(*plen); - } - op->extent.truncate_size = cpu_to_le64(truncate_size); - op->extent.truncate_seq = cpu_to_le32(truncate_seq); /* fill in oid */ - head->object_len = cpu_to_le32(req->r_oid_len); - memcpy(p, req->r_oid, req->r_oid_len); - p += req->r_oid_len; - - if (do_sync) { + head->object_len = cpu_to_le32(oid_len); + memcpy(p, oid, oid_len); + p += oid_len; + + src_op = src_ops; + while (src_op->op) { + osd_req_encode_op(req, op, src_op); + src_op++; op++; - op->op = cpu_to_le16(CEPH_OSD_OP_STARTSYNC); } + + if (req->r_trail) + data_len += req->r_trail->length; + if (snapc) { head->snap_seq = cpu_to_le64(snapc->seq); head->num_snaps = cpu_to_le32(snapc->num_snaps); @@ -229,12 +382,79 @@ struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *osdc, } } + if (flags & CEPH_OSD_FLAG_WRITE) { + req->r_request->hdr.data_off = cpu_to_le16(off); + req->r_request->hdr.data_len = cpu_to_le32(*plen + data_len); + } else if (data_len) { + req->r_request->hdr.data_off = 0; + req->r_request->hdr.data_len = cpu_to_le32(data_len); + } + BUG_ON(p > msg->front.iov_base + msg->front.iov_len); msg_size = p - msg->front.iov_base; msg->front.iov_len = msg_size; msg->hdr.front_len = cpu_to_le32(msg_size); + return; +} +EXPORT_SYMBOL(ceph_osdc_build_request); + +/* + * build new request AND message, calculate layout, and adjust file + * extent as needed. + * + * if the file was recently truncated, we include information about its + * old and new size so that the object can be updated appropriately. (we + * avoid synchronously deleting truncated objects because it's slow.) + * + * if @do_sync, include a 'startsync' command so that the osd will flush + * data quickly. + */ +struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *osdc, + struct ceph_file_layout *layout, + struct ceph_vino vino, + u64 off, u64 *plen, + int opcode, int flags, + struct ceph_snap_context *snapc, + int do_sync, + u32 truncate_seq, + u64 truncate_size, + struct timespec *mtime, + bool use_mempool, int num_reply) +{ + struct ceph_osd_req_op ops[3]; + struct ceph_osd_request *req; + + ops[0].op = opcode; + ops[0].extent.truncate_seq = truncate_seq; + ops[0].extent.truncate_size = truncate_size; + ops[0].payload_len = 0; + + if (do_sync) { + ops[1].op = CEPH_OSD_OP_STARTSYNC; + ops[1].payload_len = 0; + ops[2].op = 0; + } else + ops[1].op = 0; + + req = ceph_osdc_alloc_request(osdc, flags, + snapc, ops, + use_mempool, + GFP_NOFS, NULL, NULL); + if (IS_ERR(req)) + return req; + + /* calculate max write size */ + calc_layout(osdc, vino, layout, off, plen, req, ops); + req->r_file_layout = *layout; /* keep a copy */ + + ceph_osdc_build_request(req, off, plen, ops, + snapc, + mtime, + req->r_oid, req->r_oid_len); + return req; } +EXPORT_SYMBOL(ceph_osdc_new_request); /* * We keep osd requests in an rbtree, sorted by ->r_tid. @@ -389,7 +609,7 @@ static void __move_osd_to_lru(struct ceph_osd_client *osdc, dout("__move_osd_to_lru %p\n", osd); BUG_ON(!list_empty(&osd->o_osd_lru)); list_add_tail(&osd->o_osd_lru, &osdc->osd_lru); - osd->lru_ttl = jiffies + osdc->client->mount_args->osd_idle_ttl * HZ; + osd->lru_ttl = jiffies + osdc->client->options->osd_idle_ttl * HZ; } static void __remove_osd_from_lru(struct ceph_osd *osd) @@ -483,7 +703,7 @@ static struct ceph_osd *__lookup_osd(struct ceph_osd_client *osdc, int o) static void __schedule_osd_timeout(struct ceph_osd_client *osdc) { schedule_delayed_work(&osdc->timeout_work, - osdc->client->mount_args->osd_keepalive_timeout * HZ); + osdc->client->options->osd_keepalive_timeout * HZ); } static void __cancel_osd_timeout(struct ceph_osd_client *osdc) @@ -684,9 +904,9 @@ static void handle_timeout(struct work_struct *work) container_of(work, struct ceph_osd_client, timeout_work.work); struct ceph_osd_request *req, *last_req = NULL; struct ceph_osd *osd; - unsigned long timeout = osdc->client->mount_args->osd_timeout * HZ; + unsigned long timeout = osdc->client->options->osd_timeout * HZ; unsigned long keepalive = - osdc->client->mount_args->osd_keepalive_timeout * HZ; + osdc->client->options->osd_keepalive_timeout * HZ; unsigned long last_stamp = 0; struct rb_node *p; struct list_head slow_osds; @@ -773,7 +993,7 @@ static void handle_osds_timeout(struct work_struct *work) container_of(work, struct ceph_osd_client, osds_timeout_work.work); unsigned long delay = - osdc->client->mount_args->osd_idle_ttl * HZ >> 2; + osdc->client->options->osd_idle_ttl * HZ >> 2; dout("osds timeout\n"); down_read(&osdc->map_sem); @@ -1104,6 +1324,10 @@ int ceph_osdc_start_request(struct ceph_osd_client *osdc, req->r_request->pages = req->r_pages; req->r_request->nr_pages = req->r_num_pages; +#ifdef CONFIG_BLOCK + req->r_request->bio = req->r_bio; +#endif + req->r_request->trail = req->r_trail; register_request(osdc, req); @@ -1131,6 +1355,7 @@ int ceph_osdc_start_request(struct ceph_osd_client *osdc, up_read(&osdc->map_sem); return rc; } +EXPORT_SYMBOL(ceph_osdc_start_request); /* * wait for a request to complete @@ -1153,6 +1378,7 @@ int ceph_osdc_wait_request(struct ceph_osd_client *osdc, dout("wait_request tid %llu result %d\n", req->r_tid, req->r_result); return req->r_result; } +EXPORT_SYMBOL(ceph_osdc_wait_request); /* * sync - wait for all in-flight requests to flush. avoid starvation. @@ -1186,6 +1412,7 @@ void ceph_osdc_sync(struct ceph_osd_client *osdc) mutex_unlock(&osdc->request_mutex); dout("sync done (thru tid %llu)\n", last_tid); } +EXPORT_SYMBOL(ceph_osdc_sync); /* * init, shutdown @@ -1211,7 +1438,7 @@ int ceph_osdc_init(struct ceph_osd_client *osdc, struct ceph_client *client) INIT_DELAYED_WORK(&osdc->osds_timeout_work, handle_osds_timeout); schedule_delayed_work(&osdc->osds_timeout_work, - round_jiffies_relative(osdc->client->mount_args->osd_idle_ttl * HZ)); + round_jiffies_relative(osdc->client->options->osd_idle_ttl * HZ)); err = -ENOMEM; osdc->req_mempool = mempool_create_kmalloc_pool(10, @@ -1237,6 +1464,7 @@ out_mempool: out: return err; } +EXPORT_SYMBOL(ceph_osdc_init); void ceph_osdc_stop(struct ceph_osd_client *osdc) { @@ -1251,6 +1479,7 @@ void ceph_osdc_stop(struct ceph_osd_client *osdc) ceph_msgpool_destroy(&osdc->msgpool_op); ceph_msgpool_destroy(&osdc->msgpool_op_reply); } +EXPORT_SYMBOL(ceph_osdc_stop); /* * Read some contiguous pages. If we cross a stripe boundary, shorten @@ -1288,6 +1517,7 @@ int ceph_osdc_readpages(struct ceph_osd_client *osdc, dout("readpages result %d\n", rc); return rc; } +EXPORT_SYMBOL(ceph_osdc_readpages); /* * do a synchronous write on N pages @@ -1330,6 +1560,7 @@ int ceph_osdc_writepages(struct ceph_osd_client *osdc, struct ceph_vino vino, dout("writepages result %d\n", rc); return rc; } +EXPORT_SYMBOL(ceph_osdc_writepages); /* * handle incoming message @@ -1420,6 +1651,9 @@ static struct ceph_msg *get_reply(struct ceph_connection *con, } m->pages = req->r_pages; m->nr_pages = req->r_num_pages; +#ifdef CONFIG_BLOCK + m->bio = req->r_bio; +#endif } *skip = 0; req->r_con_filling_msg = ceph_con_get(con); diff --git a/fs/ceph/osdmap.c b/net/ceph/osdmap.c index e31f118f1392..d73f3f6efa36 100644 --- a/fs/ceph/osdmap.c +++ b/net/ceph/osdmap.c @@ -1,14 +1,15 @@ -#include "ceph_debug.h" +#include <linux/ceph/ceph_debug.h> +#include <linux/module.h> #include <linux/slab.h> #include <asm/div64.h> -#include "super.h" -#include "osdmap.h" -#include "crush/hash.h" -#include "crush/mapper.h" -#include "decode.h" +#include <linux/ceph/libceph.h> +#include <linux/ceph/osdmap.h> +#include <linux/ceph/decode.h> +#include <linux/crush/hash.h> +#include <linux/crush/mapper.h> char *ceph_osdmap_state_str(char *str, int len, int state) { @@ -417,6 +418,20 @@ static struct ceph_pg_pool_info *__lookup_pg_pool(struct rb_root *root, int id) return NULL; } +int ceph_pg_poolid_by_name(struct ceph_osdmap *map, const char *name) +{ + struct rb_node *rbp; + + for (rbp = rb_first(&map->pg_pools); rbp; rbp = rb_next(rbp)) { + struct ceph_pg_pool_info *pi = + rb_entry(rbp, struct ceph_pg_pool_info, node); + if (pi->name && strcmp(pi->name, name) == 0) + return pi->id; + } + return -ENOENT; +} +EXPORT_SYMBOL(ceph_pg_poolid_by_name); + static void __remove_pg_pool(struct rb_root *root, struct ceph_pg_pool_info *pi) { rb_erase(&pi->node, root); @@ -966,6 +981,7 @@ void ceph_calc_file_object_mapping(struct ceph_file_layout *layout, dout(" obj extent %llu~%llu\n", *oxoff, *oxlen); } +EXPORT_SYMBOL(ceph_calc_file_object_mapping); /* * calculate an object layout (i.e. pgid) from an oid, @@ -1011,6 +1027,7 @@ int ceph_calc_object_layout(struct ceph_object_layout *ol, ol->ol_stripe_unit = fl->fl_object_stripe_unit; return 0; } +EXPORT_SYMBOL(ceph_calc_object_layout); /* * Calculate raw osd vector for the given pgid. Return pointer to osd @@ -1108,3 +1125,4 @@ int ceph_calc_pg_primary(struct ceph_osdmap *osdmap, struct ceph_pg pgid) return osds[i]; return -1; } +EXPORT_SYMBOL(ceph_calc_pg_primary); diff --git a/net/ceph/pagelist.c b/net/ceph/pagelist.c new file mode 100644 index 000000000000..13cb409a7bba --- /dev/null +++ b/net/ceph/pagelist.c @@ -0,0 +1,154 @@ + +#include <linux/module.h> +#include <linux/gfp.h> +#include <linux/pagemap.h> +#include <linux/highmem.h> +#include <linux/ceph/pagelist.h> + +static void ceph_pagelist_unmap_tail(struct ceph_pagelist *pl) +{ + if (pl->mapped_tail) { + struct page *page = list_entry(pl->head.prev, struct page, lru); + kunmap(page); + pl->mapped_tail = NULL; + } +} + +int ceph_pagelist_release(struct ceph_pagelist *pl) +{ + ceph_pagelist_unmap_tail(pl); + while (!list_empty(&pl->head)) { + struct page *page = list_first_entry(&pl->head, struct page, + lru); + list_del(&page->lru); + __free_page(page); + } + ceph_pagelist_free_reserve(pl); + return 0; +} +EXPORT_SYMBOL(ceph_pagelist_release); + +static int ceph_pagelist_addpage(struct ceph_pagelist *pl) +{ + struct page *page; + + if (!pl->num_pages_free) { + page = __page_cache_alloc(GFP_NOFS); + } else { + page = list_first_entry(&pl->free_list, struct page, lru); + list_del(&page->lru); + --pl->num_pages_free; + } + if (!page) + return -ENOMEM; + pl->room += PAGE_SIZE; + ceph_pagelist_unmap_tail(pl); + list_add_tail(&page->lru, &pl->head); + pl->mapped_tail = kmap(page); + return 0; +} + +int ceph_pagelist_append(struct ceph_pagelist *pl, const void *buf, size_t len) +{ + while (pl->room < len) { + size_t bit = pl->room; + int ret; + + memcpy(pl->mapped_tail + (pl->length & ~PAGE_CACHE_MASK), + buf, bit); + pl->length += bit; + pl->room -= bit; + buf += bit; + len -= bit; + ret = ceph_pagelist_addpage(pl); + if (ret) + return ret; + } + + memcpy(pl->mapped_tail + (pl->length & ~PAGE_CACHE_MASK), buf, len); + pl->length += len; + pl->room -= len; + return 0; +} +EXPORT_SYMBOL(ceph_pagelist_append); + +/** + * Allocate enough pages for a pagelist to append the given amount + * of data without without allocating. + * Returns: 0 on success, -ENOMEM on error. + */ +int ceph_pagelist_reserve(struct ceph_pagelist *pl, size_t space) +{ + if (space <= pl->room) + return 0; + space -= pl->room; + space = (space + PAGE_SIZE - 1) >> PAGE_SHIFT; /* conv to num pages */ + + while (space > pl->num_pages_free) { + struct page *page = __page_cache_alloc(GFP_NOFS); + if (!page) + return -ENOMEM; + list_add_tail(&page->lru, &pl->free_list); + ++pl->num_pages_free; + } + return 0; +} +EXPORT_SYMBOL(ceph_pagelist_reserve); + +/** + * Free any pages that have been preallocated. + */ +int ceph_pagelist_free_reserve(struct ceph_pagelist *pl) +{ + while (!list_empty(&pl->free_list)) { + struct page *page = list_first_entry(&pl->free_list, + struct page, lru); + list_del(&page->lru); + __free_page(page); + --pl->num_pages_free; + } + BUG_ON(pl->num_pages_free); + return 0; +} +EXPORT_SYMBOL(ceph_pagelist_free_reserve); + +/** + * Create a truncation point. + */ +void ceph_pagelist_set_cursor(struct ceph_pagelist *pl, + struct ceph_pagelist_cursor *c) +{ + c->pl = pl; + c->page_lru = pl->head.prev; + c->room = pl->room; +} +EXPORT_SYMBOL(ceph_pagelist_set_cursor); + +/** + * Truncate a pagelist to the given point. Move extra pages to reserve. + * This won't sleep. + * Returns: 0 on success, + * -EINVAL if the pagelist doesn't match the trunc point pagelist + */ +int ceph_pagelist_truncate(struct ceph_pagelist *pl, + struct ceph_pagelist_cursor *c) +{ + struct page *page; + + if (pl != c->pl) + return -EINVAL; + ceph_pagelist_unmap_tail(pl); + while (pl->head.prev != c->page_lru) { + page = list_entry(pl->head.prev, struct page, lru); + list_del(&page->lru); /* remove from pagelist */ + list_add_tail(&page->lru, &pl->free_list); /* add to reserve */ + ++pl->num_pages_free; + } + pl->room = c->room; + if (!list_empty(&pl->head)) { + page = list_entry(pl->head.prev, struct page, lru); + pl->mapped_tail = kmap(page); + } + return 0; +} +EXPORT_SYMBOL(ceph_pagelist_truncate); diff --git a/net/ceph/pagevec.c b/net/ceph/pagevec.c new file mode 100644 index 000000000000..54caf0687155 --- /dev/null +++ b/net/ceph/pagevec.c @@ -0,0 +1,223 @@ +#include <linux/ceph/ceph_debug.h> + +#include <linux/module.h> +#include <linux/sched.h> +#include <linux/slab.h> +#include <linux/file.h> +#include <linux/namei.h> +#include <linux/writeback.h> + +#include <linux/ceph/libceph.h> + +/* + * build a vector of user pages + */ +struct page **ceph_get_direct_page_vector(const char __user *data, + int num_pages, + loff_t off, size_t len) +{ + struct page **pages; + int rc; + + pages = kmalloc(sizeof(*pages) * num_pages, GFP_NOFS); + if (!pages) + return ERR_PTR(-ENOMEM); + + down_read(¤t->mm->mmap_sem); + rc = get_user_pages(current, current->mm, (unsigned long)data, + num_pages, 0, 0, pages, NULL); + up_read(¤t->mm->mmap_sem); + if (rc < 0) + goto fail; + return pages; + +fail: + kfree(pages); + return ERR_PTR(rc); +} +EXPORT_SYMBOL(ceph_get_direct_page_vector); + +void ceph_put_page_vector(struct page **pages, int num_pages) +{ + int i; + + for (i = 0; i < num_pages; i++) + put_page(pages[i]); + kfree(pages); +} +EXPORT_SYMBOL(ceph_put_page_vector); + +void ceph_release_page_vector(struct page **pages, int num_pages) +{ + int i; + + for (i = 0; i < num_pages; i++) + __free_pages(pages[i], 0); + kfree(pages); +} +EXPORT_SYMBOL(ceph_release_page_vector); + +/* + * allocate a vector new pages + */ +struct page **ceph_alloc_page_vector(int num_pages, gfp_t flags) +{ + struct page **pages; + int i; + + pages = kmalloc(sizeof(*pages) * num_pages, flags); + if (!pages) + return ERR_PTR(-ENOMEM); + for (i = 0; i < num_pages; i++) { + pages[i] = __page_cache_alloc(flags); + if (pages[i] == NULL) { + ceph_release_page_vector(pages, i); + return ERR_PTR(-ENOMEM); + } + } + return pages; +} +EXPORT_SYMBOL(ceph_alloc_page_vector); + +/* + * copy user data into a page vector + */ +int ceph_copy_user_to_page_vector(struct page **pages, + const char __user *data, + loff_t off, size_t len) +{ + int i = 0; + int po = off & ~PAGE_CACHE_MASK; + int left = len; + int l, bad; + + while (left > 0) { + l = min_t(int, PAGE_CACHE_SIZE-po, left); + bad = copy_from_user(page_address(pages[i]) + po, data, l); + if (bad == l) + return -EFAULT; + data += l - bad; + left -= l - bad; + po += l - bad; + if (po == PAGE_CACHE_SIZE) { + po = 0; + i++; + } + } + return len; +} +EXPORT_SYMBOL(ceph_copy_user_to_page_vector); + +int ceph_copy_to_page_vector(struct page **pages, + const char *data, + loff_t off, size_t len) +{ + int i = 0; + size_t po = off & ~PAGE_CACHE_MASK; + size_t left = len; + size_t l; + + while (left > 0) { + l = min_t(size_t, PAGE_CACHE_SIZE-po, left); + memcpy(page_address(pages[i]) + po, data, l); + data += l; + left -= l; + po += l; + if (po == PAGE_CACHE_SIZE) { + po = 0; + i++; + } + } + return len; +} +EXPORT_SYMBOL(ceph_copy_to_page_vector); + +int ceph_copy_from_page_vector(struct page **pages, + char *data, + loff_t off, size_t len) +{ + int i = 0; + size_t po = off & ~PAGE_CACHE_MASK; + size_t left = len; + size_t l; + + while (left > 0) { + l = min_t(size_t, PAGE_CACHE_SIZE-po, left); + memcpy(data, page_address(pages[i]) + po, l); + data += l; + left -= l; + po += l; + if (po == PAGE_CACHE_SIZE) { + po = 0; + i++; + } + } + return len; +} +EXPORT_SYMBOL(ceph_copy_from_page_vector); + +/* + * copy user data from a page vector into a user pointer + */ +int ceph_copy_page_vector_to_user(struct page **pages, + char __user *data, + loff_t off, size_t len) +{ + int i = 0; + int po = off & ~PAGE_CACHE_MASK; + int left = len; + int l, bad; + + while (left > 0) { + l = min_t(int, left, PAGE_CACHE_SIZE-po); + bad = copy_to_user(data, page_address(pages[i]) + po, l); + if (bad == l) + return -EFAULT; + data += l - bad; + left -= l - bad; + if (po) { + po += l - bad; + if (po == PAGE_CACHE_SIZE) + po = 0; + } + i++; + } + return len; +} +EXPORT_SYMBOL(ceph_copy_page_vector_to_user); + +/* + * Zero an extent within a page vector. Offset is relative to the + * start of the first page. + */ +void ceph_zero_page_vector_range(int off, int len, struct page **pages) +{ + int i = off >> PAGE_CACHE_SHIFT; + + off &= ~PAGE_CACHE_MASK; + + dout("zero_page_vector_page %u~%u\n", off, len); + + /* leading partial page? */ + if (off) { + int end = min((int)PAGE_CACHE_SIZE, off + len); + dout("zeroing %d %p head from %d\n", i, pages[i], + (int)off); + zero_user_segment(pages[i], off, end); + len -= (end - off); + i++; + } + while (len >= PAGE_CACHE_SIZE) { + dout("zeroing %d %p len=%d\n", i, pages[i], len); + zero_user_segment(pages[i], 0, PAGE_CACHE_SIZE); + len -= PAGE_CACHE_SIZE; + i++; + } + /* trailing partial page? */ + if (len) { + dout("zeroing %d %p tail to %d\n", i, pages[i], (int)len); + zero_user_segment(pages[i], 0, len); + } +} +EXPORT_SYMBOL(ceph_zero_page_vector_range); + diff --git a/net/core/datagram.c b/net/core/datagram.c index 251997a95483..282806ba7a57 100644 --- a/net/core/datagram.c +++ b/net/core/datagram.c @@ -243,6 +243,7 @@ void skb_free_datagram_locked(struct sock *sk, struct sk_buff *skb) unlock_sock_fast(sk, slow); /* skb is now orphaned, can be freed outside of locked section */ + trace_kfree_skb(skb, skb_free_datagram_locked); __kfree_skb(skb); } EXPORT_SYMBOL(skb_free_datagram_locked); diff --git a/net/core/dev.c b/net/core/dev.c index 660dd41aaaa6..7ec85e27beed 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -128,6 +128,8 @@ #include <linux/jhash.h> #include <linux/random.h> #include <trace/events/napi.h> +#include <trace/events/net.h> +#include <trace/events/skb.h> #include <linux/pci.h> #include "net-sysfs.h" @@ -1978,6 +1980,7 @@ int dev_hard_start_xmit(struct sk_buff *skb, struct net_device *dev, } rc = ops->ndo_start_xmit(skb, dev); + trace_net_dev_xmit(skb, rc); if (rc == NETDEV_TX_OK) txq_trans_update(txq); return rc; @@ -1998,6 +2001,7 @@ gso: skb_dst_drop(nskb); rc = ops->ndo_start_xmit(nskb, dev); + trace_net_dev_xmit(nskb, rc); if (unlikely(rc != NETDEV_TX_OK)) { if (rc & ~NETDEV_TX_MASK) goto out_kfree_gso_skb; @@ -2186,6 +2190,7 @@ int dev_queue_xmit(struct sk_buff *skb) #ifdef CONFIG_NET_CLS_ACT skb->tc_verd = SET_TC_AT(skb->tc_verd, AT_EGRESS); #endif + trace_net_dev_queue(skb); if (q->enqueue) { rc = __dev_xmit_skb(skb, q, dev, txq); goto out; @@ -2512,6 +2517,7 @@ int netif_rx(struct sk_buff *skb) if (netdev_tstamp_prequeue) net_timestamp_check(skb); + trace_netif_rx(skb); #ifdef CONFIG_RPS { struct rps_dev_flow voidflow, *rflow = &voidflow; @@ -2571,6 +2577,7 @@ static void net_tx_action(struct softirq_action *h) clist = clist->next; WARN_ON(atomic_read(&skb->users)); + trace_kfree_skb(skb, net_tx_action); __kfree_skb(skb); } } @@ -2828,6 +2835,7 @@ static int __netif_receive_skb(struct sk_buff *skb) if (!netdev_tstamp_prequeue) net_timestamp_check(skb); + trace_netif_receive_skb(skb); if (vlan_tx_tag_present(skb) && vlan_hwaccel_do_receive(skb)) return NET_RX_SUCCESS; diff --git a/net/core/net-traces.c b/net/core/net-traces.c index afa6380ed88a..7f1bb2aba03b 100644 --- a/net/core/net-traces.c +++ b/net/core/net-traces.c @@ -26,6 +26,7 @@ #define CREATE_TRACE_POINTS #include <trace/events/skb.h> +#include <trace/events/net.h> #include <trace/events/napi.h> EXPORT_TRACEPOINT_SYMBOL_GPL(kfree_skb); diff --git a/net/core/skbuff.c b/net/core/skbuff.c index c83b421341c0..56ba3c4e4761 100644 --- a/net/core/skbuff.c +++ b/net/core/skbuff.c @@ -466,6 +466,7 @@ void consume_skb(struct sk_buff *skb) smp_rmb(); else if (likely(!atomic_dec_and_test(&skb->users))) return; + trace_consume_skb(skb); __kfree_skb(skb); } EXPORT_SYMBOL(consume_skb); diff --git a/net/core/sock.c b/net/core/sock.c index ef30e9d286e7..7d99e13148e6 100644 --- a/net/core/sock.c +++ b/net/core/sock.c @@ -1078,8 +1078,11 @@ static void sk_prot_free(struct proto *prot, struct sock *sk) #ifdef CONFIG_CGROUPS void sock_update_classid(struct sock *sk) { - u32 classid = task_cls_classid(current); + u32 classid; + rcu_read_lock(); /* doing current task, which cannot vanish. */ + classid = task_cls_classid(current); + rcu_read_unlock(); if (classid && classid != sk->sk_classid) sk->sk_classid = classid; } diff --git a/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4_compat.c b/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4_compat.c index 244f7cb08d68..37f8adb68c79 100644 --- a/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4_compat.c +++ b/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4_compat.c @@ -11,6 +11,7 @@ #include <linux/proc_fs.h> #include <linux/seq_file.h> #include <linux/percpu.h> +#include <linux/security.h> #include <net/net_namespace.h> #include <linux/netfilter.h> @@ -87,6 +88,29 @@ static void ct_seq_stop(struct seq_file *s, void *v) rcu_read_unlock(); } +#ifdef CONFIG_NF_CONNTRACK_SECMARK +static int ct_show_secctx(struct seq_file *s, const struct nf_conn *ct) +{ + int ret; + u32 len; + char *secctx; + + ret = security_secid_to_secctx(ct->secmark, &secctx, &len); + if (ret) + return ret; + + ret = seq_printf(s, "secctx=%s ", secctx); + + security_release_secctx(secctx, len); + return ret; +} +#else +static inline int ct_show_secctx(struct seq_file *s, const struct nf_conn *ct) +{ + return 0; +} +#endif + static int ct_seq_show(struct seq_file *s, void *v) { struct nf_conntrack_tuple_hash *hash = v; @@ -148,10 +172,8 @@ static int ct_seq_show(struct seq_file *s, void *v) goto release; #endif -#ifdef CONFIG_NF_CONNTRACK_SECMARK - if (seq_printf(s, "secmark=%u ", ct->secmark)) + if (ct_show_secctx(s, ct)) goto release; -#endif if (seq_printf(s, "use=%u\n", atomic_read(&ct->ct_general.use))) goto release; diff --git a/net/ipv4/netfilter/nf_nat_core.c b/net/ipv4/netfilter/nf_nat_core.c index 8c8632d9b93c..957c9241fb0c 100644 --- a/net/ipv4/netfilter/nf_nat_core.c +++ b/net/ipv4/netfilter/nf_nat_core.c @@ -38,7 +38,7 @@ static DEFINE_SPINLOCK(nf_nat_lock); static struct nf_conntrack_l3proto *l3proto __read_mostly; #define MAX_IP_NAT_PROTO 256 -static const struct nf_nat_protocol *nf_nat_protos[MAX_IP_NAT_PROTO] +static const struct nf_nat_protocol __rcu *nf_nat_protos[MAX_IP_NAT_PROTO] __read_mostly; static inline const struct nf_nat_protocol * diff --git a/net/netfilter/core.c b/net/netfilter/core.c index 78b505d33bfb..fdaec7daff1d 100644 --- a/net/netfilter/core.c +++ b/net/netfilter/core.c @@ -27,7 +27,7 @@ static DEFINE_MUTEX(afinfo_mutex); -const struct nf_afinfo *nf_afinfo[NFPROTO_NUMPROTO] __read_mostly; +const struct nf_afinfo __rcu *nf_afinfo[NFPROTO_NUMPROTO] __read_mostly; EXPORT_SYMBOL(nf_afinfo); int nf_register_afinfo(const struct nf_afinfo *afinfo) diff --git a/net/netfilter/nf_conntrack_ecache.c b/net/netfilter/nf_conntrack_ecache.c index cdcc7649476b..5702de35e2bb 100644 --- a/net/netfilter/nf_conntrack_ecache.c +++ b/net/netfilter/nf_conntrack_ecache.c @@ -26,10 +26,10 @@ static DEFINE_MUTEX(nf_ct_ecache_mutex); -struct nf_ct_event_notifier *nf_conntrack_event_cb __read_mostly; +struct nf_ct_event_notifier __rcu *nf_conntrack_event_cb __read_mostly; EXPORT_SYMBOL_GPL(nf_conntrack_event_cb); -struct nf_exp_event_notifier *nf_expect_event_cb __read_mostly; +struct nf_exp_event_notifier __rcu *nf_expect_event_cb __read_mostly; EXPORT_SYMBOL_GPL(nf_expect_event_cb); /* deliver cached events and clear cache entry - must be called with locally diff --git a/net/netfilter/nf_conntrack_extend.c b/net/netfilter/nf_conntrack_extend.c index 8d9e4c949b96..bd82450c193f 100644 --- a/net/netfilter/nf_conntrack_extend.c +++ b/net/netfilter/nf_conntrack_extend.c @@ -16,7 +16,7 @@ #include <linux/skbuff.h> #include <net/netfilter/nf_conntrack_extend.h> -static struct nf_ct_ext_type *nf_ct_ext_types[NF_CT_EXT_NUM]; +static struct nf_ct_ext_type __rcu *nf_ct_ext_types[NF_CT_EXT_NUM]; static DEFINE_MUTEX(nf_ct_ext_type_mutex); void __nf_ct_ext_destroy(struct nf_conn *ct) diff --git a/net/netfilter/nf_conntrack_netlink.c b/net/netfilter/nf_conntrack_netlink.c index 5bae1cd15eea..146476c6441a 100644 --- a/net/netfilter/nf_conntrack_netlink.c +++ b/net/netfilter/nf_conntrack_netlink.c @@ -22,6 +22,7 @@ #include <linux/rculist_nulls.h> #include <linux/types.h> #include <linux/timer.h> +#include <linux/security.h> #include <linux/skbuff.h> #include <linux/errno.h> #include <linux/netlink.h> @@ -245,16 +246,31 @@ nla_put_failure: #ifdef CONFIG_NF_CONNTRACK_SECMARK static inline int -ctnetlink_dump_secmark(struct sk_buff *skb, const struct nf_conn *ct) +ctnetlink_dump_secctx(struct sk_buff *skb, const struct nf_conn *ct) { - NLA_PUT_BE32(skb, CTA_SECMARK, htonl(ct->secmark)); - return 0; + struct nlattr *nest_secctx; + int len, ret; + char *secctx; + + ret = security_secid_to_secctx(ct->secmark, &secctx, &len); + if (ret) + return ret; + + ret = -1; + nest_secctx = nla_nest_start(skb, CTA_SECCTX | NLA_F_NESTED); + if (!nest_secctx) + goto nla_put_failure; + + NLA_PUT_STRING(skb, CTA_SECCTX_NAME, secctx); + nla_nest_end(skb, nest_secctx); + ret = 0; nla_put_failure: - return -1; + security_release_secctx(secctx, len); + return ret; } #else -#define ctnetlink_dump_secmark(a, b) (0) +#define ctnetlink_dump_secctx(a, b) (0) #endif #define master_tuple(ct) &(ct->master->tuplehash[IP_CT_DIR_ORIGINAL].tuple) @@ -391,7 +407,7 @@ ctnetlink_fill_info(struct sk_buff *skb, u32 pid, u32 seq, ctnetlink_dump_protoinfo(skb, ct) < 0 || ctnetlink_dump_helpinfo(skb, ct) < 0 || ctnetlink_dump_mark(skb, ct) < 0 || - ctnetlink_dump_secmark(skb, ct) < 0 || + ctnetlink_dump_secctx(skb, ct) < 0 || ctnetlink_dump_id(skb, ct) < 0 || ctnetlink_dump_use(skb, ct) < 0 || ctnetlink_dump_master(skb, ct) < 0 || @@ -437,6 +453,17 @@ ctnetlink_counters_size(const struct nf_conn *ct) ; } +#ifdef CONFIG_NF_CONNTRACK_SECMARK +static int ctnetlink_nlmsg_secctx_size(const struct nf_conn *ct) +{ + int len; + + security_secid_to_secctx(ct->secmark, NULL, &len); + + return sizeof(char) * len; +} +#endif + static inline size_t ctnetlink_nlmsg_size(const struct nf_conn *ct) { @@ -453,7 +480,8 @@ ctnetlink_nlmsg_size(const struct nf_conn *ct) + nla_total_size(0) /* CTA_HELP */ + nla_total_size(NF_CT_HELPER_NAME_LEN) /* CTA_HELP_NAME */ #ifdef CONFIG_NF_CONNTRACK_SECMARK - + nla_total_size(sizeof(u_int32_t)) /* CTA_SECMARK */ + + nla_total_size(0) /* CTA_SECCTX */ + + nla_total_size(ctnetlink_nlmsg_secctx_size(ct)) /* CTA_SECCTX_NAME */ #endif #ifdef CONFIG_NF_NAT_NEEDED + 2 * nla_total_size(0) /* CTA_NAT_SEQ_ADJ_ORIG|REPL */ @@ -556,7 +584,7 @@ ctnetlink_conntrack_event(unsigned int events, struct nf_ct_event *item) #ifdef CONFIG_NF_CONNTRACK_SECMARK if ((events & (1 << IPCT_SECMARK) || ct->secmark) - && ctnetlink_dump_secmark(skb, ct) < 0) + && ctnetlink_dump_secctx(skb, ct) < 0) goto nla_put_failure; #endif diff --git a/net/netfilter/nf_conntrack_proto.c b/net/netfilter/nf_conntrack_proto.c index 5886ba1d52a0..ed6d92958023 100644 --- a/net/netfilter/nf_conntrack_proto.c +++ b/net/netfilter/nf_conntrack_proto.c @@ -28,8 +28,8 @@ #include <net/netfilter/nf_conntrack_l4proto.h> #include <net/netfilter/nf_conntrack_core.h> -static struct nf_conntrack_l4proto **nf_ct_protos[PF_MAX] __read_mostly; -struct nf_conntrack_l3proto *nf_ct_l3protos[AF_MAX] __read_mostly; +static struct nf_conntrack_l4proto __rcu **nf_ct_protos[PF_MAX] __read_mostly; +struct nf_conntrack_l3proto __rcu *nf_ct_l3protos[AF_MAX] __read_mostly; EXPORT_SYMBOL_GPL(nf_ct_l3protos); static DEFINE_MUTEX(nf_ct_proto_mutex); diff --git a/net/netfilter/nf_conntrack_standalone.c b/net/netfilter/nf_conntrack_standalone.c index eb973fcd67ab..0fb65705b44b 100644 --- a/net/netfilter/nf_conntrack_standalone.c +++ b/net/netfilter/nf_conntrack_standalone.c @@ -15,6 +15,7 @@ #include <linux/seq_file.h> #include <linux/percpu.h> #include <linux/netdevice.h> +#include <linux/security.h> #include <net/net_namespace.h> #ifdef CONFIG_SYSCTL #include <linux/sysctl.h> @@ -108,6 +109,29 @@ static void ct_seq_stop(struct seq_file *s, void *v) rcu_read_unlock(); } +#ifdef CONFIG_NF_CONNTRACK_SECMARK +static int ct_show_secctx(struct seq_file *s, const struct nf_conn *ct) +{ + int ret; + u32 len; + char *secctx; + + ret = security_secid_to_secctx(ct->secmark, &secctx, &len); + if (ret) + return ret; + + ret = seq_printf(s, "secctx=%s ", secctx); + + security_release_secctx(secctx, len); + return ret; +} +#else +static inline int ct_show_secctx(struct seq_file *s, const struct nf_conn *ct) +{ + return 0; +} +#endif + /* return 0 on success, 1 in case of error */ static int ct_seq_show(struct seq_file *s, void *v) { @@ -168,10 +192,8 @@ static int ct_seq_show(struct seq_file *s, void *v) goto release; #endif -#ifdef CONFIG_NF_CONNTRACK_SECMARK - if (seq_printf(s, "secmark=%u ", ct->secmark)) + if (ct_show_secctx(s, ct)) goto release; -#endif #ifdef CONFIG_NF_CONNTRACK_ZONES if (seq_printf(s, "zone=%u ", nf_ct_zone(ct))) diff --git a/net/netfilter/nf_log.c b/net/netfilter/nf_log.c index 7df37fd786bc..b07393eab88e 100644 --- a/net/netfilter/nf_log.c +++ b/net/netfilter/nf_log.c @@ -16,7 +16,7 @@ #define NF_LOG_PREFIXLEN 128 #define NFLOGGER_NAME_LEN 64 -static const struct nf_logger *nf_loggers[NFPROTO_NUMPROTO] __read_mostly; +static const struct nf_logger __rcu *nf_loggers[NFPROTO_NUMPROTO] __read_mostly; static struct list_head nf_loggers_l[NFPROTO_NUMPROTO] __read_mostly; static DEFINE_MUTEX(nf_log_mutex); diff --git a/net/netfilter/nf_queue.c b/net/netfilter/nf_queue.c index 78b3cf9c519c..74aebed5bd28 100644 --- a/net/netfilter/nf_queue.c +++ b/net/netfilter/nf_queue.c @@ -18,7 +18,7 @@ * long term mutex. The handler must provide an an outfn() to accept packets * for queueing and must reinject all packets it receives, no matter what. */ -static const struct nf_queue_handler *queue_handler[NFPROTO_NUMPROTO] __read_mostly; +static const struct nf_queue_handler __rcu *queue_handler[NFPROTO_NUMPROTO] __read_mostly; static DEFINE_MUTEX(queue_handler_mutex); diff --git a/net/netfilter/xt_CT.c b/net/netfilter/xt_CT.c index 0cb6053f02fd..782e51986a6f 100644 --- a/net/netfilter/xt_CT.c +++ b/net/netfilter/xt_CT.c @@ -9,7 +9,6 @@ #include <linux/module.h> #include <linux/gfp.h> #include <linux/skbuff.h> -#include <linux/selinux.h> #include <linux/netfilter_ipv4/ip_tables.h> #include <linux/netfilter_ipv6/ip6_tables.h> #include <linux/netfilter/x_tables.h> diff --git a/net/netfilter/xt_SECMARK.c b/net/netfilter/xt_SECMARK.c index 23b2d6c486b5..9faf5e050b79 100644 --- a/net/netfilter/xt_SECMARK.c +++ b/net/netfilter/xt_SECMARK.c @@ -14,8 +14,8 @@ */ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt #include <linux/module.h> +#include <linux/security.h> #include <linux/skbuff.h> -#include <linux/selinux.h> #include <linux/netfilter/x_tables.h> #include <linux/netfilter/xt_SECMARK.h> @@ -39,9 +39,8 @@ secmark_tg(struct sk_buff *skb, const struct xt_action_param *par) switch (mode) { case SECMARK_MODE_SEL: - secmark = info->u.sel.selsid; + secmark = info->secid; break; - default: BUG(); } @@ -50,33 +49,33 @@ secmark_tg(struct sk_buff *skb, const struct xt_action_param *par) return XT_CONTINUE; } -static int checkentry_selinux(struct xt_secmark_target_info *info) +static int checkentry_lsm(struct xt_secmark_target_info *info) { int err; - struct xt_secmark_target_selinux_info *sel = &info->u.sel; - sel->selctx[SECMARK_SELCTX_MAX - 1] = '\0'; + info->secctx[SECMARK_SECCTX_MAX - 1] = '\0'; + info->secid = 0; - err = selinux_string_to_sid(sel->selctx, &sel->selsid); + err = security_secctx_to_secid(info->secctx, strlen(info->secctx), + &info->secid); if (err) { if (err == -EINVAL) - pr_info("invalid SELinux context \'%s\'\n", - sel->selctx); + pr_info("invalid security context \'%s\'\n", info->secctx); return err; } - if (!sel->selsid) { - pr_info("unable to map SELinux context \'%s\'\n", sel->selctx); + if (!info->secid) { + pr_info("unable to map security context \'%s\'\n", info->secctx); return -ENOENT; } - err = selinux_secmark_relabel_packet_permission(sel->selsid); + err = security_secmark_relabel_packet(info->secid); if (err) { pr_info("unable to obtain relabeling permission\n"); return err; } - selinux_secmark_refcount_inc(); + security_secmark_refcount_inc(); return 0; } @@ -100,16 +99,16 @@ static int secmark_tg_check(const struct xt_tgchk_param *par) switch (info->mode) { case SECMARK_MODE_SEL: - err = checkentry_selinux(info); - if (err <= 0) - return err; break; - default: pr_info("invalid mode: %hu\n", info->mode); return -EINVAL; } + err = checkentry_lsm(info); + if (err) + return err; + if (!mode) mode = info->mode; return 0; @@ -119,7 +118,7 @@ static void secmark_tg_destroy(const struct xt_tgdtor_param *par) { switch (mode) { case SECMARK_MODE_SEL: - selinux_secmark_refcount_dec(); + security_secmark_refcount_dec(); } } diff --git a/net/rds/page.c b/net/rds/page.c index 595a952d4b17..1dfbfea12e9b 100644 --- a/net/rds/page.c +++ b/net/rds/page.c @@ -57,30 +57,17 @@ int rds_page_copy_user(struct page *page, unsigned long offset, unsigned long ret; void *addr; - if (to_user) + addr = kmap(page); + if (to_user) { rds_stats_add(s_copy_to_user, bytes); - else + ret = copy_to_user(ptr, addr + offset, bytes); + } else { rds_stats_add(s_copy_from_user, bytes); - - addr = kmap_atomic(page, KM_USER0); - if (to_user) - ret = __copy_to_user_inatomic(ptr, addr + offset, bytes); - else - ret = __copy_from_user_inatomic(addr + offset, ptr, bytes); - kunmap_atomic(addr, KM_USER0); - - if (ret) { - addr = kmap(page); - if (to_user) - ret = copy_to_user(ptr, addr + offset, bytes); - else - ret = copy_from_user(addr + offset, ptr, bytes); - kunmap(page); - if (ret) - return -EFAULT; + ret = copy_from_user(addr + offset, ptr, bytes); } + kunmap(page); - return 0; + return ret ? -EFAULT : 0; } EXPORT_SYMBOL_GPL(rds_page_copy_user); diff --git a/net/sched/cls_cgroup.c b/net/sched/cls_cgroup.c index 78ef2c5e130b..37dff78e9cb1 100644 --- a/net/sched/cls_cgroup.c +++ b/net/sched/cls_cgroup.c @@ -123,7 +123,7 @@ static int cls_cgroup_classify(struct sk_buff *skb, struct tcf_proto *tp, * calls by looking at the number of nested bh disable calls because * softirqs always disables bh. */ - if (softirq_count() != SOFTIRQ_OFFSET) { + if (in_serving_softirq()) { /* If there is an sk_classid we'll use that. */ if (!skb->sk) return -1; diff --git a/scripts/Makefile b/scripts/Makefile index 842dbc2d5aed..2e088109fbd5 100644 --- a/scripts/Makefile +++ b/scripts/Makefile @@ -11,6 +11,7 @@ hostprogs-$(CONFIG_KALLSYMS) += kallsyms hostprogs-$(CONFIG_LOGO) += pnmtologo hostprogs-$(CONFIG_VT) += conmakehash hostprogs-$(CONFIG_IKCONFIG) += bin2c +hostprogs-$(BUILD_C_RECORDMCOUNT) += recordmcount always := $(hostprogs-y) $(hostprogs-m) diff --git a/scripts/Makefile.build b/scripts/Makefile.build index 108eeb99351d..5ad25e17b6cb 100644 --- a/scripts/Makefile.build +++ b/scripts/Makefile.build @@ -209,6 +209,15 @@ cmd_modversions = \ endif ifdef CONFIG_FTRACE_MCOUNT_RECORD +ifdef BUILD_C_RECORDMCOUNT +# Due to recursion, we must skip empty.o. +# The empty.o file is created in the make process in order to determine +# the target endianness and word size. It is made before all other C +# files, including recordmcount. +cmd_record_mcount = if [ $(@) != "scripts/mod/empty.o" ]; then \ + $(objtree)/scripts/recordmcount "$(@)"; \ + fi; +else cmd_record_mcount = set -e ; perl $(srctree)/scripts/recordmcount.pl "$(ARCH)" \ "$(if $(CONFIG_CPU_BIG_ENDIAN),big,little)" \ "$(if $(CONFIG_64BIT),64,32)" \ @@ -216,6 +225,7 @@ cmd_record_mcount = set -e ; perl $(srctree)/scripts/recordmcount.pl "$(ARCH)" \ "$(LD)" "$(NM)" "$(RM)" "$(MV)" \ "$(if $(part-of-module),1,0)" "$(@)"; endif +endif define rule_cc_o_c $(call echo-cmd,checksrc) $(cmd_checksrc) \ diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib index 54fd1b700131..7bfcf1a09ac5 100644 --- a/scripts/Makefile.lib +++ b/scripts/Makefile.lib @@ -101,14 +101,6 @@ basename_flags = -D"KBUILD_BASENAME=KBUILD_STR($(call name-fix,$(basetarget)))" modname_flags = $(if $(filter 1,$(words $(modname))),\ -D"KBUILD_MODNAME=KBUILD_STR($(call name-fix,$(modname)))") -#hash values -ifdef CONFIG_DYNAMIC_DEBUG -debug_flags = -D"DEBUG_HASH=$(shell ./scripts/basic/hash djb2 $(@D)$(modname))"\ - -D"DEBUG_HASH2=$(shell ./scripts/basic/hash r5 $(@D)$(modname))" -else -debug_flags = -endif - orig_c_flags = $(KBUILD_CPPFLAGS) $(KBUILD_CFLAGS) $(KBUILD_SUBDIR_CCFLAGS) \ $(ccflags-y) $(CFLAGS_$(basetarget).o) _c_flags = $(filter-out $(CFLAGS_REMOVE_$(basetarget).o), $(orig_c_flags)) @@ -152,8 +144,7 @@ endif c_flags = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(LINUXINCLUDE) \ $(__c_flags) $(modkern_cflags) \ - -D"KBUILD_STR(s)=\#s" $(basename_flags) $(modname_flags) \ - $(debug_flags) + -D"KBUILD_STR(s)=\#s" $(basename_flags) $(modname_flags) a_flags = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(LINUXINCLUDE) \ $(__a_flags) $(modkern_aflags) diff --git a/scripts/basic/Makefile b/scripts/basic/Makefile index 09559951df12..4c324a1f1e0e 100644 --- a/scripts/basic/Makefile +++ b/scripts/basic/Makefile @@ -9,7 +9,7 @@ # fixdep: Used to generate dependency information during build process # docproc: Used in Documentation/DocBook -hostprogs-y := fixdep docproc hash +hostprogs-y := fixdep docproc always := $(hostprogs-y) # fixdep is needed to compile other host programs diff --git a/scripts/basic/hash.c b/scripts/basic/hash.c deleted file mode 100644 index 2ef5d3f666b8..000000000000 --- a/scripts/basic/hash.c +++ /dev/null @@ -1,64 +0,0 @@ -/* - * Copyright (C) 2008 Red Hat, Inc., Jason Baron <jbaron@redhat.com> - * - */ - -#include <stdio.h> -#include <stdlib.h> -#include <string.h> - -#define DYNAMIC_DEBUG_HASH_BITS 6 - -static const char *program; - -static void usage(void) -{ - printf("Usage: %s <djb2|r5> <modname>\n", program); - exit(1); -} - -/* djb2 hashing algorithm by Dan Bernstein. From: - * http://www.cse.yorku.ca/~oz/hash.html - */ - -static unsigned int djb2_hash(char *str) -{ - unsigned long hash = 5381; - int c; - - c = *str; - while (c) { - hash = ((hash << 5) + hash) + c; - c = *++str; - } - return (unsigned int)(hash & ((1 << DYNAMIC_DEBUG_HASH_BITS) - 1)); -} - -static unsigned int r5_hash(char *str) -{ - unsigned long hash = 0; - int c; - - c = *str; - while (c) { - hash = (hash + (c << 4) + (c >> 4)) * 11; - c = *++str; - } - return (unsigned int)(hash & ((1 << DYNAMIC_DEBUG_HASH_BITS) - 1)); -} - -int main(int argc, char *argv[]) -{ - program = argv[0]; - - if (argc != 3) - usage(); - if (!strcmp(argv[1], "djb2")) - printf("%d\n", djb2_hash(argv[2])); - else if (!strcmp(argv[1], "r5")) - printf("%d\n", r5_hash(argv[2])); - else - usage(); - exit(0); -} - diff --git a/scripts/gcc-goto.sh b/scripts/gcc-goto.sh new file mode 100644 index 000000000000..520d16b1ffaf --- /dev/null +++ b/scripts/gcc-goto.sh @@ -0,0 +1,5 @@ +#!/bin/sh +# Test for gcc 'asm goto' suport +# Copyright (C) 2010, Jason Baron <jbaron@redhat.com> + +echo "int main(void) { entry: asm goto (\"\"::::entry); return 0; }" | $@ -x c - -c -o /dev/null >/dev/null 2>&1 && echo "y" diff --git a/scripts/recordmcount.c b/scripts/recordmcount.c new file mode 100644 index 000000000000..26e1271259ba --- /dev/null +++ b/scripts/recordmcount.c @@ -0,0 +1,363 @@ +/* + * recordmcount.c: construct a table of the locations of calls to 'mcount' + * so that ftrace can find them quickly. + * Copyright 2009 John F. Reiser <jreiser@BitWagon.com>. All rights reserved. + * Licensed under the GNU General Public License, version 2 (GPLv2). + * + * Restructured to fit Linux format, as well as other updates: + * Copyright 2010 Steven Rostedt <srostedt@redhat.com>, Red Hat Inc. + */ + +/* + * Strategy: alter the .o file in-place. + * + * Append a new STRTAB that has the new section names, followed by a new array + * ElfXX_Shdr[] that has the new section headers, followed by the section + * contents for __mcount_loc and its relocations. The old shstrtab strings, + * and the old ElfXX_Shdr[] array, remain as "garbage" (commonly, a couple + * kilobytes.) Subsequent processing by /bin/ld (or the kernel module loader) + * will ignore the garbage regions, because they are not designated by the + * new .e_shoff nor the new ElfXX_Shdr[]. [In order to remove the garbage, + * then use "ld -r" to create a new file that omits the garbage.] + */ + +#include <sys/types.h> +#include <sys/mman.h> +#include <sys/stat.h> +#include <elf.h> +#include <fcntl.h> +#include <setjmp.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> + +static int fd_map; /* File descriptor for file being modified. */ +static int mmap_failed; /* Boolean flag. */ +static void *ehdr_curr; /* current ElfXX_Ehdr * for resource cleanup */ +static char gpfx; /* prefix for global symbol name (sometimes '_') */ +static struct stat sb; /* Remember .st_size, etc. */ +static jmp_buf jmpenv; /* setjmp/longjmp per-file error escape */ + +/* setjmp() return values */ +enum { + SJ_SETJMP = 0, /* hardwired first return */ + SJ_FAIL, + SJ_SUCCEED +}; + +/* Per-file resource cleanup when multiple files. */ +static void +cleanup(void) +{ + if (!mmap_failed) + munmap(ehdr_curr, sb.st_size); + else + free(ehdr_curr); + close(fd_map); +} + +static void __attribute__((noreturn)) +fail_file(void) +{ + cleanup(); + longjmp(jmpenv, SJ_FAIL); +} + +static void __attribute__((noreturn)) +succeed_file(void) +{ + cleanup(); + longjmp(jmpenv, SJ_SUCCEED); +} + +/* ulseek, uread, ...: Check return value for errors. */ + +static off_t +ulseek(int const fd, off_t const offset, int const whence) +{ + off_t const w = lseek(fd, offset, whence); + if ((off_t)-1 == w) { + perror("lseek"); + fail_file(); + } + return w; +} + +static size_t +uread(int const fd, void *const buf, size_t const count) +{ + size_t const n = read(fd, buf, count); + if (n != count) { + perror("read"); + fail_file(); + } + return n; +} + +static size_t +uwrite(int const fd, void const *const buf, size_t const count) +{ + size_t const n = write(fd, buf, count); + if (n != count) { + perror("write"); + fail_file(); + } + return n; +} + +static void * +umalloc(size_t size) +{ + void *const addr = malloc(size); + if (0 == addr) { + fprintf(stderr, "malloc failed: %zu bytes\n", size); + fail_file(); + } + return addr; +} + +/* + * Get the whole file as a programming convenience in order to avoid + * malloc+lseek+read+free of many pieces. If successful, then mmap + * avoids copying unused pieces; else just read the whole file. + * Open for both read and write; new info will be appended to the file. + * Use MAP_PRIVATE so that a few changes to the in-memory ElfXX_Ehdr + * do not propagate to the file until an explicit overwrite at the last. + * This preserves most aspects of consistency (all except .st_size) + * for simultaneous readers of the file while we are appending to it. + * However, multiple writers still are bad. We choose not to use + * locking because it is expensive and the use case of kernel build + * makes multiple writers unlikely. + */ +static void *mmap_file(char const *fname) +{ + void *addr; + + fd_map = open(fname, O_RDWR); + if (0 > fd_map || 0 > fstat(fd_map, &sb)) { + perror(fname); + fail_file(); + } + if (!S_ISREG(sb.st_mode)) { + fprintf(stderr, "not a regular file: %s\n", fname); + fail_file(); + } + addr = mmap(0, sb.st_size, PROT_READ|PROT_WRITE, MAP_PRIVATE, + fd_map, 0); + mmap_failed = 0; + if (MAP_FAILED == addr) { + mmap_failed = 1; + addr = umalloc(sb.st_size); + uread(fd_map, addr, sb.st_size); + } + return addr; +} + +/* w8rev, w8nat, ...: Handle endianness. */ + +static uint64_t w8rev(uint64_t const x) +{ + return ((0xff & (x >> (0 * 8))) << (7 * 8)) + | ((0xff & (x >> (1 * 8))) << (6 * 8)) + | ((0xff & (x >> (2 * 8))) << (5 * 8)) + | ((0xff & (x >> (3 * 8))) << (4 * 8)) + | ((0xff & (x >> (4 * 8))) << (3 * 8)) + | ((0xff & (x >> (5 * 8))) << (2 * 8)) + | ((0xff & (x >> (6 * 8))) << (1 * 8)) + | ((0xff & (x >> (7 * 8))) << (0 * 8)); +} + +static uint32_t w4rev(uint32_t const x) +{ + return ((0xff & (x >> (0 * 8))) << (3 * 8)) + | ((0xff & (x >> (1 * 8))) << (2 * 8)) + | ((0xff & (x >> (2 * 8))) << (1 * 8)) + | ((0xff & (x >> (3 * 8))) << (0 * 8)); +} + +static uint32_t w2rev(uint16_t const x) +{ + return ((0xff & (x >> (0 * 8))) << (1 * 8)) + | ((0xff & (x >> (1 * 8))) << (0 * 8)); +} + +static uint64_t w8nat(uint64_t const x) +{ + return x; +} + +static uint32_t w4nat(uint32_t const x) +{ + return x; +} + +static uint32_t w2nat(uint16_t const x) +{ + return x; +} + +static uint64_t (*w8)(uint64_t); +static uint32_t (*w)(uint32_t); +static uint32_t (*w2)(uint16_t); + +/* Names of the sections that could contain calls to mcount. */ +static int +is_mcounted_section_name(char const *const txtname) +{ + return 0 == strcmp(".text", txtname) || + 0 == strcmp(".sched.text", txtname) || + 0 == strcmp(".spinlock.text", txtname) || + 0 == strcmp(".irqentry.text", txtname) || + 0 == strcmp(".text.unlikely", txtname); +} + +/* 32 bit and 64 bit are very similar */ +#include "recordmcount.h" +#define RECORD_MCOUNT_64 +#include "recordmcount.h" + +static void +do_file(char const *const fname) +{ + Elf32_Ehdr *const ehdr = mmap_file(fname); + unsigned int reltype = 0; + + ehdr_curr = ehdr; + w = w4nat; + w2 = w2nat; + w8 = w8nat; + switch (ehdr->e_ident[EI_DATA]) { + static unsigned int const endian = 1; + default: { + fprintf(stderr, "unrecognized ELF data encoding %d: %s\n", + ehdr->e_ident[EI_DATA], fname); + fail_file(); + } break; + case ELFDATA2LSB: { + if (1 != *(unsigned char const *)&endian) { + /* main() is big endian, file.o is little endian. */ + w = w4rev; + w2 = w2rev; + w8 = w8rev; + } + } break; + case ELFDATA2MSB: { + if (0 != *(unsigned char const *)&endian) { + /* main() is little endian, file.o is big endian. */ + w = w4rev; + w2 = w2rev; + w8 = w8rev; + } + } break; + } /* end switch */ + if (0 != memcmp(ELFMAG, ehdr->e_ident, SELFMAG) + || ET_REL != w2(ehdr->e_type) + || EV_CURRENT != ehdr->e_ident[EI_VERSION]) { + fprintf(stderr, "unrecognized ET_REL file %s\n", fname); + fail_file(); + } + + gpfx = 0; + switch (w2(ehdr->e_machine)) { + default: { + fprintf(stderr, "unrecognized e_machine %d %s\n", + w2(ehdr->e_machine), fname); + fail_file(); + } break; + case EM_386: reltype = R_386_32; break; + case EM_ARM: reltype = R_ARM_ABS32; break; + case EM_IA_64: reltype = R_IA64_IMM64; gpfx = '_'; break; + case EM_PPC: reltype = R_PPC_ADDR32; gpfx = '_'; break; + case EM_PPC64: reltype = R_PPC64_ADDR64; gpfx = '_'; break; + case EM_S390: /* reltype: e_class */ gpfx = '_'; break; + case EM_SH: reltype = R_SH_DIR32; break; + case EM_SPARCV9: reltype = R_SPARC_64; gpfx = '_'; break; + case EM_X86_64: reltype = R_X86_64_64; break; + } /* end switch */ + + switch (ehdr->e_ident[EI_CLASS]) { + default: { + fprintf(stderr, "unrecognized ELF class %d %s\n", + ehdr->e_ident[EI_CLASS], fname); + fail_file(); + } break; + case ELFCLASS32: { + if (sizeof(Elf32_Ehdr) != w2(ehdr->e_ehsize) + || sizeof(Elf32_Shdr) != w2(ehdr->e_shentsize)) { + fprintf(stderr, + "unrecognized ET_REL file: %s\n", fname); + fail_file(); + } + if (EM_S390 == w2(ehdr->e_machine)) + reltype = R_390_32; + do32(ehdr, fname, reltype); + } break; + case ELFCLASS64: { + Elf64_Ehdr *const ghdr = (Elf64_Ehdr *)ehdr; + if (sizeof(Elf64_Ehdr) != w2(ghdr->e_ehsize) + || sizeof(Elf64_Shdr) != w2(ghdr->e_shentsize)) { + fprintf(stderr, + "unrecognized ET_REL file: %s\n", fname); + fail_file(); + } + if (EM_S390 == w2(ghdr->e_machine)) + reltype = R_390_64; + do64(ghdr, fname, reltype); + } break; + } /* end switch */ + + cleanup(); +} + +int +main(int argc, char const *argv[]) +{ + const char ftrace[] = "kernel/trace/ftrace.o"; + int ftrace_size = sizeof(ftrace) - 1; + int n_error = 0; /* gcc-4.3.0 false positive complaint */ + + if (argc <= 1) { + fprintf(stderr, "usage: recordmcount file.o...\n"); + return 0; + } + + /* Process each file in turn, allowing deep failure. */ + for (--argc, ++argv; 0 < argc; --argc, ++argv) { + int const sjval = setjmp(jmpenv); + int len; + + /* + * The file kernel/trace/ftrace.o references the mcount + * function but does not call it. Since ftrace.o should + * not be traced anyway, we just skip it. + */ + len = strlen(argv[0]); + if (len >= ftrace_size && + strcmp(argv[0] + (len - ftrace_size), ftrace) == 0) + continue; + + switch (sjval) { + default: { + fprintf(stderr, "internal error: %s\n", argv[0]); + exit(1); + } break; + case SJ_SETJMP: { /* normal sequence */ + /* Avoid problems if early cleanup() */ + fd_map = -1; + ehdr_curr = NULL; + mmap_failed = 1; + do_file(argv[0]); + } break; + case SJ_FAIL: { /* error in do_file or below */ + ++n_error; + } break; + case SJ_SUCCEED: { /* premature success */ + /* do nothing */ + } break; + } /* end switch */ + } + return !!n_error; +} + + diff --git a/scripts/recordmcount.h b/scripts/recordmcount.h new file mode 100644 index 000000000000..7f39d0943d2d --- /dev/null +++ b/scripts/recordmcount.h @@ -0,0 +1,366 @@ +/* + * recordmcount.h + * + * This code was taken out of recordmcount.c written by + * Copyright 2009 John F. Reiser <jreiser@BitWagon.com>. All rights reserved. + * + * The original code had the same algorithms for both 32bit + * and 64bit ELF files, but the code was duplicated to support + * the difference in structures that were used. This + * file creates a macro of everything that is different between + * the 64 and 32 bit code, such that by including this header + * twice we can create both sets of functions by including this + * header once with RECORD_MCOUNT_64 undefined, and again with + * it defined. + * + * This conversion to macros was done by: + * Copyright 2010 Steven Rostedt <srostedt@redhat.com>, Red Hat Inc. + * + * Licensed under the GNU General Public License, version 2 (GPLv2). + */ +#undef append_func +#undef sift_rel_mcount +#undef find_secsym_ndx +#undef __has_rel_mcount +#undef has_rel_mcount +#undef tot_relsize +#undef do_func +#undef Elf_Ehdr +#undef Elf_Shdr +#undef Elf_Rel +#undef Elf_Rela +#undef Elf_Sym +#undef ELF_R_SYM +#undef ELF_R_INFO +#undef ELF_ST_BIND +#undef uint_t +#undef _w +#undef _align +#undef _size + +#ifdef RECORD_MCOUNT_64 +# define append_func append64 +# define sift_rel_mcount sift64_rel_mcount +# define find_secsym_ndx find64_secsym_ndx +# define __has_rel_mcount __has64_rel_mcount +# define has_rel_mcount has64_rel_mcount +# define tot_relsize tot64_relsize +# define do_func do64 +# define Elf_Ehdr Elf64_Ehdr +# define Elf_Shdr Elf64_Shdr +# define Elf_Rel Elf64_Rel +# define Elf_Rela Elf64_Rela +# define Elf_Sym Elf64_Sym +# define ELF_R_SYM ELF64_R_SYM +# define ELF_R_INFO ELF64_R_INFO +# define ELF_ST_BIND ELF64_ST_BIND +# define uint_t uint64_t +# define _w w8 +# define _align 7u +# define _size 8 +#else +# define append_func append32 +# define sift_rel_mcount sift32_rel_mcount +# define find_secsym_ndx find32_secsym_ndx +# define __has_rel_mcount __has32_rel_mcount +# define has_rel_mcount has32_rel_mcount +# define tot_relsize tot32_relsize +# define do_func do32 +# define Elf_Ehdr Elf32_Ehdr +# define Elf_Shdr Elf32_Shdr +# define Elf_Rel Elf32_Rel +# define Elf_Rela Elf32_Rela +# define Elf_Sym Elf32_Sym +# define ELF_R_SYM ELF32_R_SYM +# define ELF_R_INFO ELF32_R_INFO +# define ELF_ST_BIND ELF32_ST_BIND +# define uint_t uint32_t +# define _w w +# define _align 3u +# define _size 4 +#endif + +/* Append the new shstrtab, Elf_Shdr[], __mcount_loc and its relocations. */ +static void append_func(Elf_Ehdr *const ehdr, + Elf_Shdr *const shstr, + uint_t const *const mloc0, + uint_t const *const mlocp, + Elf_Rel const *const mrel0, + Elf_Rel const *const mrelp, + unsigned int const rel_entsize, + unsigned int const symsec_sh_link) +{ + /* Begin constructing output file */ + Elf_Shdr mcsec; + char const *mc_name = (sizeof(Elf_Rela) == rel_entsize) + ? ".rela__mcount_loc" + : ".rel__mcount_loc"; + unsigned const old_shnum = w2(ehdr->e_shnum); + uint_t const old_shoff = _w(ehdr->e_shoff); + uint_t const old_shstr_sh_size = _w(shstr->sh_size); + uint_t const old_shstr_sh_offset = _w(shstr->sh_offset); + uint_t t = 1 + strlen(mc_name) + _w(shstr->sh_size); + uint_t new_e_shoff; + + shstr->sh_size = _w(t); + shstr->sh_offset = _w(sb.st_size); + t += sb.st_size; + t += (_align & -t); /* word-byte align */ + new_e_shoff = t; + + /* body for new shstrtab */ + ulseek(fd_map, sb.st_size, SEEK_SET); + uwrite(fd_map, old_shstr_sh_offset + (void *)ehdr, old_shstr_sh_size); + uwrite(fd_map, mc_name, 1 + strlen(mc_name)); + + /* old(modified) Elf_Shdr table, word-byte aligned */ + ulseek(fd_map, t, SEEK_SET); + t += sizeof(Elf_Shdr) * old_shnum; + uwrite(fd_map, old_shoff + (void *)ehdr, + sizeof(Elf_Shdr) * old_shnum); + + /* new sections __mcount_loc and .rel__mcount_loc */ + t += 2*sizeof(mcsec); + mcsec.sh_name = w((sizeof(Elf_Rela) == rel_entsize) + strlen(".rel") + + old_shstr_sh_size); + mcsec.sh_type = w(SHT_PROGBITS); + mcsec.sh_flags = _w(SHF_ALLOC); + mcsec.sh_addr = 0; + mcsec.sh_offset = _w(t); + mcsec.sh_size = _w((void *)mlocp - (void *)mloc0); + mcsec.sh_link = 0; + mcsec.sh_info = 0; + mcsec.sh_addralign = _w(_size); + mcsec.sh_entsize = _w(_size); + uwrite(fd_map, &mcsec, sizeof(mcsec)); + + mcsec.sh_name = w(old_shstr_sh_size); + mcsec.sh_type = (sizeof(Elf_Rela) == rel_entsize) + ? w(SHT_RELA) + : w(SHT_REL); + mcsec.sh_flags = 0; + mcsec.sh_addr = 0; + mcsec.sh_offset = _w((void *)mlocp - (void *)mloc0 + t); + mcsec.sh_size = _w((void *)mrelp - (void *)mrel0); + mcsec.sh_link = w(symsec_sh_link); + mcsec.sh_info = w(old_shnum); + mcsec.sh_addralign = _w(_size); + mcsec.sh_entsize = _w(rel_entsize); + uwrite(fd_map, &mcsec, sizeof(mcsec)); + + uwrite(fd_map, mloc0, (void *)mlocp - (void *)mloc0); + uwrite(fd_map, mrel0, (void *)mrelp - (void *)mrel0); + + ehdr->e_shoff = _w(new_e_shoff); + ehdr->e_shnum = w2(2 + w2(ehdr->e_shnum)); /* {.rel,}__mcount_loc */ + ulseek(fd_map, 0, SEEK_SET); + uwrite(fd_map, ehdr, sizeof(*ehdr)); +} + + +/* + * Look at the relocations in order to find the calls to mcount. + * Accumulate the section offsets that are found, and their relocation info, + * onto the end of the existing arrays. + */ +static uint_t *sift_rel_mcount(uint_t *mlocp, + unsigned const offbase, + Elf_Rel **const mrelpp, + Elf_Shdr const *const relhdr, + Elf_Ehdr const *const ehdr, + unsigned const recsym, + uint_t const recval, + unsigned const reltype) +{ + uint_t *const mloc0 = mlocp; + Elf_Rel *mrelp = *mrelpp; + Elf_Shdr *const shdr0 = (Elf_Shdr *)(_w(ehdr->e_shoff) + + (void *)ehdr); + unsigned const symsec_sh_link = w(relhdr->sh_link); + Elf_Shdr const *const symsec = &shdr0[symsec_sh_link]; + Elf_Sym const *const sym0 = (Elf_Sym const *)(_w(symsec->sh_offset) + + (void *)ehdr); + + Elf_Shdr const *const strsec = &shdr0[w(symsec->sh_link)]; + char const *const str0 = (char const *)(_w(strsec->sh_offset) + + (void *)ehdr); + + Elf_Rel const *const rel0 = (Elf_Rel const *)(_w(relhdr->sh_offset) + + (void *)ehdr); + unsigned rel_entsize = _w(relhdr->sh_entsize); + unsigned const nrel = _w(relhdr->sh_size) / rel_entsize; + Elf_Rel const *relp = rel0; + + unsigned mcountsym = 0; + unsigned t; + + for (t = nrel; t; --t) { + if (!mcountsym) { + Elf_Sym const *const symp = + &sym0[ELF_R_SYM(_w(relp->r_info))]; + char const *symname = &str0[w(symp->st_name)]; + + if ('.' == symname[0]) + ++symname; /* ppc64 hack */ + if (0 == strcmp((('_' == gpfx) ? "_mcount" : "mcount"), + symname)) + mcountsym = ELF_R_SYM(_w(relp->r_info)); + } + + if (mcountsym == ELF_R_SYM(_w(relp->r_info))) { + uint_t const addend = _w(_w(relp->r_offset) - recval); + + mrelp->r_offset = _w(offbase + + ((void *)mlocp - (void *)mloc0)); + mrelp->r_info = _w(ELF_R_INFO(recsym, reltype)); + if (sizeof(Elf_Rela) == rel_entsize) { + ((Elf_Rela *)mrelp)->r_addend = addend; + *mlocp++ = 0; + } else + *mlocp++ = addend; + + mrelp = (Elf_Rel *)(rel_entsize + (void *)mrelp); + } + relp = (Elf_Rel const *)(rel_entsize + (void *)relp); + } + *mrelpp = mrelp; + return mlocp; +} + + +/* + * Find a symbol in the given section, to be used as the base for relocating + * the table of offsets of calls to mcount. A local or global symbol suffices, + * but avoid a Weak symbol because it may be overridden; the change in value + * would invalidate the relocations of the offsets of the calls to mcount. + * Often the found symbol will be the unnamed local symbol generated by + * GNU 'as' for the start of each section. For example: + * Num: Value Size Type Bind Vis Ndx Name + * 2: 00000000 0 SECTION LOCAL DEFAULT 1 + */ +static unsigned find_secsym_ndx(unsigned const txtndx, + char const *const txtname, + uint_t *const recvalp, + Elf_Shdr const *const symhdr, + Elf_Ehdr const *const ehdr) +{ + Elf_Sym const *const sym0 = (Elf_Sym const *)(_w(symhdr->sh_offset) + + (void *)ehdr); + unsigned const nsym = _w(symhdr->sh_size) / _w(symhdr->sh_entsize); + Elf_Sym const *symp; + unsigned t; + + for (symp = sym0, t = nsym; t; --t, ++symp) { + unsigned int const st_bind = ELF_ST_BIND(symp->st_info); + + if (txtndx == w2(symp->st_shndx) + /* avoid STB_WEAK */ + && (STB_LOCAL == st_bind || STB_GLOBAL == st_bind)) { + *recvalp = _w(symp->st_value); + return symp - sym0; + } + } + fprintf(stderr, "Cannot find symbol for section %d: %s.\n", + txtndx, txtname); + fail_file(); +} + + +/* Evade ISO C restriction: no declaration after statement in has_rel_mcount. */ +static char const * +__has_rel_mcount(Elf_Shdr const *const relhdr, /* is SHT_REL or SHT_RELA */ + Elf_Shdr const *const shdr0, + char const *const shstrtab, + char const *const fname) +{ + /* .sh_info depends on .sh_type == SHT_REL[,A] */ + Elf_Shdr const *const txthdr = &shdr0[w(relhdr->sh_info)]; + char const *const txtname = &shstrtab[w(txthdr->sh_name)]; + + if (0 == strcmp("__mcount_loc", txtname)) { + fprintf(stderr, "warning: __mcount_loc already exists: %s\n", + fname); + succeed_file(); + } + if (SHT_PROGBITS != w(txthdr->sh_type) || + !is_mcounted_section_name(txtname)) + return NULL; + return txtname; +} + +static char const *has_rel_mcount(Elf_Shdr const *const relhdr, + Elf_Shdr const *const shdr0, + char const *const shstrtab, + char const *const fname) +{ + if (SHT_REL != w(relhdr->sh_type) && SHT_RELA != w(relhdr->sh_type)) + return NULL; + return __has_rel_mcount(relhdr, shdr0, shstrtab, fname); +} + + +static unsigned tot_relsize(Elf_Shdr const *const shdr0, + unsigned nhdr, + const char *const shstrtab, + const char *const fname) +{ + unsigned totrelsz = 0; + Elf_Shdr const *shdrp = shdr0; + + for (; nhdr; --nhdr, ++shdrp) { + if (has_rel_mcount(shdrp, shdr0, shstrtab, fname)) + totrelsz += _w(shdrp->sh_size); + } + return totrelsz; +} + + +/* Overall supervision for Elf32 ET_REL file. */ +static void +do_func(Elf_Ehdr *const ehdr, char const *const fname, unsigned const reltype) +{ + Elf_Shdr *const shdr0 = (Elf_Shdr *)(_w(ehdr->e_shoff) + + (void *)ehdr); + unsigned const nhdr = w2(ehdr->e_shnum); + Elf_Shdr *const shstr = &shdr0[w2(ehdr->e_shstrndx)]; + char const *const shstrtab = (char const *)(_w(shstr->sh_offset) + + (void *)ehdr); + + Elf_Shdr const *relhdr; + unsigned k; + + /* Upper bound on space: assume all relevant relocs are for mcount. */ + unsigned const totrelsz = tot_relsize(shdr0, nhdr, shstrtab, fname); + Elf_Rel *const mrel0 = umalloc(totrelsz); + Elf_Rel * mrelp = mrel0; + + /* 2*sizeof(address) <= sizeof(Elf_Rel) */ + uint_t *const mloc0 = umalloc(totrelsz>>1); + uint_t * mlocp = mloc0; + + unsigned rel_entsize = 0; + unsigned symsec_sh_link = 0; + + for (relhdr = shdr0, k = nhdr; k; --k, ++relhdr) { + char const *const txtname = has_rel_mcount(relhdr, shdr0, + shstrtab, fname); + if (txtname) { + uint_t recval = 0; + unsigned const recsym = find_secsym_ndx( + w(relhdr->sh_info), txtname, &recval, + &shdr0[symsec_sh_link = w(relhdr->sh_link)], + ehdr); + + rel_entsize = _w(relhdr->sh_entsize); + mlocp = sift_rel_mcount(mlocp, + (void *)mlocp - (void *)mloc0, &mrelp, + relhdr, ehdr, recsym, recval, reltype); + } + } + if (mloc0 != mlocp) { + append_func(ehdr, shstr, mloc0, mlocp, mrel0, mrelp, + rel_entsize, symsec_sh_link); + } + free(mrel0); + free(mloc0); +} diff --git a/security/apparmor/.gitignore b/security/apparmor/.gitignore index 0a0a99f3b083..4d995aeaebc0 100644 --- a/security/apparmor/.gitignore +++ b/security/apparmor/.gitignore @@ -3,3 +3,4 @@ # af_names.h capability_names.h +rlim_names.h diff --git a/security/apparmor/apparmorfs.c b/security/apparmor/apparmorfs.c index 7320331b44ab..544ff5837cb6 100644 --- a/security/apparmor/apparmorfs.c +++ b/security/apparmor/apparmorfs.c @@ -29,7 +29,7 @@ * aa_simple_write_to_buffer - common routine for getting policy from user * @op: operation doing the user buffer copy * @userbuf: user buffer to copy data from (NOT NULL) - * @alloc_size: size of user buffer + * @alloc_size: size of user buffer (REQUIRES: @alloc_size >= @copy_size) * @copy_size: size of data to copy from user buffer * @pos: position write is at in the file (NOT NULL) * @@ -42,6 +42,8 @@ static char *aa_simple_write_to_buffer(int op, const char __user *userbuf, { char *data; + BUG_ON(copy_size > alloc_size); + if (*pos != 0) /* only writes from pos 0, that is complete writes */ return ERR_PTR(-ESPIPE); diff --git a/security/capability.c b/security/capability.c index 95a6599a37bb..30ae00fbecd5 100644 --- a/security/capability.c +++ b/security/capability.c @@ -677,7 +677,18 @@ static void cap_inet_conn_established(struct sock *sk, struct sk_buff *skb) { } +static int cap_secmark_relabel_packet(u32 secid) +{ + return 0; +} +static void cap_secmark_refcount_inc(void) +{ +} + +static void cap_secmark_refcount_dec(void) +{ +} static void cap_req_classify_flow(const struct request_sock *req, struct flowi *fl) @@ -777,7 +788,8 @@ static int cap_secid_to_secctx(u32 secid, char **secdata, u32 *seclen) static int cap_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid) { - return -EOPNOTSUPP; + *secid = 0; + return 0; } static void cap_release_secctx(char *secdata, u32 seclen) @@ -1018,6 +1030,9 @@ void __init security_fixup_ops(struct security_operations *ops) set_to_cap_if_null(ops, inet_conn_request); set_to_cap_if_null(ops, inet_csk_clone); set_to_cap_if_null(ops, inet_conn_established); + set_to_cap_if_null(ops, secmark_relabel_packet); + set_to_cap_if_null(ops, secmark_refcount_inc); + set_to_cap_if_null(ops, secmark_refcount_dec); set_to_cap_if_null(ops, req_classify_flow); set_to_cap_if_null(ops, tun_dev_create); set_to_cap_if_null(ops, tun_dev_post_create); diff --git a/security/commoncap.c b/security/commoncap.c index 9d172e6e330c..5e632b4857e4 100644 --- a/security/commoncap.c +++ b/security/commoncap.c @@ -719,14 +719,11 @@ static int cap_safe_nice(struct task_struct *p) /** * cap_task_setscheduler - Detemine if scheduler policy change is permitted * @p: The task to affect - * @policy: The policy to effect - * @lp: The parameters to the scheduling policy * * Detemine if the requested scheduler policy change is permitted for the * specified task, returning 0 if permission is granted, -ve if denied. */ -int cap_task_setscheduler(struct task_struct *p, int policy, - struct sched_param *lp) +int cap_task_setscheduler(struct task_struct *p) { return cap_safe_nice(p); } diff --git a/security/security.c b/security/security.c index c53949f17d9e..b50f472061a4 100644 --- a/security/security.c +++ b/security/security.c @@ -89,20 +89,12 @@ __setup("security=", choose_lsm); * Return true if: * -The passed LSM is the one chosen by user at boot time, * -or the passed LSM is configured as the default and the user did not - * choose an alternate LSM at boot time, - * -or there is no default LSM set and the user didn't specify a - * specific LSM and we're the first to ask for registration permission, - * -or the passed LSM is currently loaded. + * choose an alternate LSM at boot time. * Otherwise, return false. */ int __init security_module_enable(struct security_operations *ops) { - if (!*chosen_lsm) - strncpy(chosen_lsm, ops->name, SECURITY_NAME_MAX); - else if (strncmp(ops->name, chosen_lsm, SECURITY_NAME_MAX)) - return 0; - - return 1; + return !strcmp(ops->name, chosen_lsm); } /** @@ -786,10 +778,9 @@ int security_task_setrlimit(struct task_struct *p, unsigned int resource, return security_ops->task_setrlimit(p, resource, new_rlim); } -int security_task_setscheduler(struct task_struct *p, - int policy, struct sched_param *lp) +int security_task_setscheduler(struct task_struct *p) { - return security_ops->task_setscheduler(p, policy, lp); + return security_ops->task_setscheduler(p); } int security_task_getscheduler(struct task_struct *p) @@ -1145,6 +1136,24 @@ void security_inet_conn_established(struct sock *sk, security_ops->inet_conn_established(sk, skb); } +int security_secmark_relabel_packet(u32 secid) +{ + return security_ops->secmark_relabel_packet(secid); +} +EXPORT_SYMBOL(security_secmark_relabel_packet); + +void security_secmark_refcount_inc(void) +{ + security_ops->secmark_refcount_inc(); +} +EXPORT_SYMBOL(security_secmark_refcount_inc); + +void security_secmark_refcount_dec(void) +{ + security_ops->secmark_refcount_dec(); +} +EXPORT_SYMBOL(security_secmark_refcount_dec); + int security_tun_dev_create(void) { return security_ops->tun_dev_create(); diff --git a/security/selinux/Makefile b/security/selinux/Makefile index 58d80f3bd6f6..ad5cd76ec231 100644 --- a/security/selinux/Makefile +++ b/security/selinux/Makefile @@ -2,25 +2,20 @@ # Makefile for building the SELinux module as part of the kernel tree. # -obj-$(CONFIG_SECURITY_SELINUX) := selinux.o ss/ - -selinux-y := avc.o \ - hooks.o \ - selinuxfs.o \ - netlink.o \ - nlmsgtab.o \ - netif.o \ - netnode.o \ - netport.o \ - exports.o +obj-$(CONFIG_SECURITY_SELINUX) := selinux.o + +selinux-y := avc.o hooks.o selinuxfs.o netlink.o nlmsgtab.o netif.o \ + netnode.o netport.o exports.o \ + ss/ebitmap.o ss/hashtab.o ss/symtab.o ss/sidtab.o ss/avtab.o \ + ss/policydb.o ss/services.o ss/conditional.o ss/mls.o ss/status.o selinux-$(CONFIG_SECURITY_NETWORK_XFRM) += xfrm.o selinux-$(CONFIG_NETLABEL) += netlabel.o -EXTRA_CFLAGS += -Isecurity/selinux -Isecurity/selinux/include +ccflags-y := -Isecurity/selinux -Isecurity/selinux/include -$(obj)/avc.o: $(obj)/flask.h +$(addprefix $(obj)/,$(selinux-y)): $(obj)/flask.h quiet_cmd_flask = GEN $(obj)/flask.h $(obj)/av_permissions.h cmd_flask = scripts/selinux/genheaders/genheaders $(obj)/flask.h $(obj)/av_permissions.h diff --git a/security/selinux/exports.c b/security/selinux/exports.c index c0a454aee1e0..90664385dead 100644 --- a/security/selinux/exports.c +++ b/security/selinux/exports.c @@ -11,58 +11,9 @@ * it under the terms of the GNU General Public License version 2, * as published by the Free Software Foundation. */ -#include <linux/types.h> -#include <linux/kernel.h> #include <linux/module.h> -#include <linux/selinux.h> -#include <linux/fs.h> -#include <linux/ipc.h> -#include <asm/atomic.h> #include "security.h" -#include "objsec.h" - -/* SECMARK reference count */ -extern atomic_t selinux_secmark_refcount; - -int selinux_string_to_sid(char *str, u32 *sid) -{ - if (selinux_enabled) - return security_context_to_sid(str, strlen(str), sid); - else { - *sid = 0; - return 0; - } -} -EXPORT_SYMBOL_GPL(selinux_string_to_sid); - -int selinux_secmark_relabel_packet_permission(u32 sid) -{ - if (selinux_enabled) { - const struct task_security_struct *__tsec; - u32 tsid; - - __tsec = current_security(); - tsid = __tsec->sid; - - return avc_has_perm(tsid, sid, SECCLASS_PACKET, - PACKET__RELABELTO, NULL); - } - return 0; -} -EXPORT_SYMBOL_GPL(selinux_secmark_relabel_packet_permission); - -void selinux_secmark_refcount_inc(void) -{ - atomic_inc(&selinux_secmark_refcount); -} -EXPORT_SYMBOL_GPL(selinux_secmark_refcount_inc); - -void selinux_secmark_refcount_dec(void) -{ - atomic_dec(&selinux_secmark_refcount); -} -EXPORT_SYMBOL_GPL(selinux_secmark_refcount_dec); bool selinux_is_enabled(void) { diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c index 4796ddd4e721..d9154cf90ae1 100644 --- a/security/selinux/hooks.c +++ b/security/selinux/hooks.c @@ -3354,11 +3354,11 @@ static int selinux_task_setrlimit(struct task_struct *p, unsigned int resource, return 0; } -static int selinux_task_setscheduler(struct task_struct *p, int policy, struct sched_param *lp) +static int selinux_task_setscheduler(struct task_struct *p) { int rc; - rc = cap_task_setscheduler(p, policy, lp); + rc = cap_task_setscheduler(p); if (rc) return rc; @@ -4279,6 +4279,27 @@ static void selinux_inet_conn_established(struct sock *sk, struct sk_buff *skb) selinux_skb_peerlbl_sid(skb, family, &sksec->peer_sid); } +static int selinux_secmark_relabel_packet(u32 sid) +{ + const struct task_security_struct *__tsec; + u32 tsid; + + __tsec = current_security(); + tsid = __tsec->sid; + + return avc_has_perm(tsid, sid, SECCLASS_PACKET, PACKET__RELABELTO, NULL); +} + +static void selinux_secmark_refcount_inc(void) +{ + atomic_inc(&selinux_secmark_refcount); +} + +static void selinux_secmark_refcount_dec(void) +{ + atomic_dec(&selinux_secmark_refcount); +} + static void selinux_req_classify_flow(const struct request_sock *req, struct flowi *fl) { @@ -5533,6 +5554,9 @@ static struct security_operations selinux_ops = { .inet_conn_request = selinux_inet_conn_request, .inet_csk_clone = selinux_inet_csk_clone, .inet_conn_established = selinux_inet_conn_established, + .secmark_relabel_packet = selinux_secmark_relabel_packet, + .secmark_refcount_inc = selinux_secmark_refcount_inc, + .secmark_refcount_dec = selinux_secmark_refcount_dec, .req_classify_flow = selinux_req_classify_flow, .tun_dev_create = selinux_tun_dev_create, .tun_dev_post_create = selinux_tun_dev_post_create, diff --git a/security/selinux/include/classmap.h b/security/selinux/include/classmap.h index b4c9eb4bd6f9..8858d2b2d4b6 100644 --- a/security/selinux/include/classmap.h +++ b/security/selinux/include/classmap.h @@ -17,7 +17,7 @@ struct security_class_mapping secclass_map[] = { { "compute_av", "compute_create", "compute_member", "check_context", "load_policy", "compute_relabel", "compute_user", "setenforce", "setbool", "setsecparam", - "setcheckreqprot", NULL } }, + "setcheckreqprot", "read_policy", NULL } }, { "process", { "fork", "transition", "sigchld", "sigkill", "sigstop", "signull", "signal", "ptrace", "getsched", "setsched", diff --git a/security/selinux/include/security.h b/security/selinux/include/security.h index 1f7c2491d3dc..671273eb1115 100644 --- a/security/selinux/include/security.h +++ b/security/selinux/include/security.h @@ -9,6 +9,7 @@ #define _SELINUX_SECURITY_H_ #include <linux/magic.h> +#include <linux/types.h> #include "flask.h" #define SECSID_NULL 0x00000000 /* unspecified SID */ @@ -82,6 +83,8 @@ extern int selinux_policycap_openperm; int security_mls_enabled(void); int security_load_policy(void *data, size_t len); +int security_read_policy(void **data, ssize_t *len); +size_t security_policydb_len(void); int security_policycap_supported(unsigned int req_cap); @@ -191,5 +194,25 @@ static inline int security_netlbl_sid_to_secattr(u32 sid, const char *security_get_initial_sid_context(u32 sid); +/* + * status notifier using mmap interface + */ +extern struct page *selinux_kernel_status_page(void); + +#define SELINUX_KERNEL_STATUS_VERSION 1 +struct selinux_kernel_status { + u32 version; /* version number of thie structure */ + u32 sequence; /* sequence number of seqlock logic */ + u32 enforcing; /* current setting of enforcing mode */ + u32 policyload; /* times of policy reloaded */ + u32 deny_unknown; /* current setting of deny_unknown */ + /* + * The version > 0 supports above members. + */ +} __attribute__((packed)); + +extern void selinux_status_update_setenforce(int enforcing); +extern void selinux_status_update_policyload(int seqno); + #endif /* _SELINUX_SECURITY_H_ */ diff --git a/security/selinux/selinuxfs.c b/security/selinux/selinuxfs.c index 79a1bb635662..87e0556bae70 100644 --- a/security/selinux/selinuxfs.c +++ b/security/selinux/selinuxfs.c @@ -68,6 +68,8 @@ static int *bool_pending_values; static struct dentry *class_dir; static unsigned long last_class_ino; +static char policy_opened; + /* global data for policy capabilities */ static struct dentry *policycap_dir; @@ -110,6 +112,8 @@ enum sel_inos { SEL_COMPAT_NET, /* whether to use old compat network packet controls */ SEL_REJECT_UNKNOWN, /* export unknown reject handling to userspace */ SEL_DENY_UNKNOWN, /* export unknown deny handling to userspace */ + SEL_STATUS, /* export current status using mmap() */ + SEL_POLICY, /* allow userspace to read the in kernel policy */ SEL_INO_NEXT, /* The next inode number to use */ }; @@ -171,6 +175,7 @@ static ssize_t sel_write_enforce(struct file *file, const char __user *buf, if (selinux_enforcing) avc_ss_reset(0); selnl_notify_setenforce(selinux_enforcing); + selinux_status_update_setenforce(selinux_enforcing); } length = count; out: @@ -205,6 +210,59 @@ static const struct file_operations sel_handle_unknown_ops = { .llseek = generic_file_llseek, }; +static int sel_open_handle_status(struct inode *inode, struct file *filp) +{ + struct page *status = selinux_kernel_status_page(); + + if (!status) + return -ENOMEM; + + filp->private_data = status; + + return 0; +} + +static ssize_t sel_read_handle_status(struct file *filp, char __user *buf, + size_t count, loff_t *ppos) +{ + struct page *status = filp->private_data; + + BUG_ON(!status); + + return simple_read_from_buffer(buf, count, ppos, + page_address(status), + sizeof(struct selinux_kernel_status)); +} + +static int sel_mmap_handle_status(struct file *filp, + struct vm_area_struct *vma) +{ + struct page *status = filp->private_data; + unsigned long size = vma->vm_end - vma->vm_start; + + BUG_ON(!status); + + /* only allows one page from the head */ + if (vma->vm_pgoff > 0 || size != PAGE_SIZE) + return -EIO; + /* disallow writable mapping */ + if (vma->vm_flags & VM_WRITE) + return -EPERM; + /* disallow mprotect() turns it into writable */ + vma->vm_flags &= ~VM_MAYWRITE; + + return remap_pfn_range(vma, vma->vm_start, + page_to_pfn(status), + size, vma->vm_page_prot); +} + +static const struct file_operations sel_handle_status_ops = { + .open = sel_open_handle_status, + .read = sel_read_handle_status, + .mmap = sel_mmap_handle_status, + .llseek = generic_file_llseek, +}; + #ifdef CONFIG_SECURITY_SELINUX_DISABLE static ssize_t sel_write_disable(struct file *file, const char __user *buf, size_t count, loff_t *ppos) @@ -296,6 +354,141 @@ static const struct file_operations sel_mls_ops = { .llseek = generic_file_llseek, }; +struct policy_load_memory { + size_t len; + void *data; +}; + +static int sel_open_policy(struct inode *inode, struct file *filp) +{ + struct policy_load_memory *plm = NULL; + int rc; + + BUG_ON(filp->private_data); + + mutex_lock(&sel_mutex); + + rc = task_has_security(current, SECURITY__READ_POLICY); + if (rc) + goto err; + + rc = -EBUSY; + if (policy_opened) + goto err; + + rc = -ENOMEM; + plm = kzalloc(sizeof(*plm), GFP_KERNEL); + if (!plm) + goto err; + + if (i_size_read(inode) != security_policydb_len()) { + mutex_lock(&inode->i_mutex); + i_size_write(inode, security_policydb_len()); + mutex_unlock(&inode->i_mutex); + } + + rc = security_read_policy(&plm->data, &plm->len); + if (rc) + goto err; + + policy_opened = 1; + + filp->private_data = plm; + + mutex_unlock(&sel_mutex); + + return 0; +err: + mutex_unlock(&sel_mutex); + + if (plm) + vfree(plm->data); + kfree(plm); + return rc; +} + +static int sel_release_policy(struct inode *inode, struct file *filp) +{ + struct policy_load_memory *plm = filp->private_data; + + BUG_ON(!plm); + + policy_opened = 0; + + vfree(plm->data); + kfree(plm); + + return 0; +} + +static ssize_t sel_read_policy(struct file *filp, char __user *buf, + size_t count, loff_t *ppos) +{ + struct policy_load_memory *plm = filp->private_data; + int ret; + + mutex_lock(&sel_mutex); + + ret = task_has_security(current, SECURITY__READ_POLICY); + if (ret) + goto out; + + ret = simple_read_from_buffer(buf, count, ppos, plm->data, plm->len); +out: + mutex_unlock(&sel_mutex); + return ret; +} + +static int sel_mmap_policy_fault(struct vm_area_struct *vma, + struct vm_fault *vmf) +{ + struct policy_load_memory *plm = vma->vm_file->private_data; + unsigned long offset; + struct page *page; + + if (vmf->flags & (FAULT_FLAG_MKWRITE | FAULT_FLAG_WRITE)) + return VM_FAULT_SIGBUS; + + offset = vmf->pgoff << PAGE_SHIFT; + if (offset >= roundup(plm->len, PAGE_SIZE)) + return VM_FAULT_SIGBUS; + + page = vmalloc_to_page(plm->data + offset); + get_page(page); + + vmf->page = page; + + return 0; +} + +static struct vm_operations_struct sel_mmap_policy_ops = { + .fault = sel_mmap_policy_fault, + .page_mkwrite = sel_mmap_policy_fault, +}; + +int sel_mmap_policy(struct file *filp, struct vm_area_struct *vma) +{ + if (vma->vm_flags & VM_SHARED) { + /* do not allow mprotect to make mapping writable */ + vma->vm_flags &= ~VM_MAYWRITE; + + if (vma->vm_flags & VM_WRITE) + return -EACCES; + } + + vma->vm_flags |= VM_RESERVED; + vma->vm_ops = &sel_mmap_policy_ops; + + return 0; +} + +static const struct file_operations sel_policy_ops = { + .open = sel_open_policy, + .read = sel_read_policy, + .mmap = sel_mmap_policy, + .release = sel_release_policy, +}; + static ssize_t sel_write_load(struct file *file, const char __user *buf, size_t count, loff_t *ppos) @@ -1612,6 +1805,8 @@ static int sel_fill_super(struct super_block *sb, void *data, int silent) [SEL_CHECKREQPROT] = {"checkreqprot", &sel_checkreqprot_ops, S_IRUGO|S_IWUSR}, [SEL_REJECT_UNKNOWN] = {"reject_unknown", &sel_handle_unknown_ops, S_IRUGO}, [SEL_DENY_UNKNOWN] = {"deny_unknown", &sel_handle_unknown_ops, S_IRUGO}, + [SEL_STATUS] = {"status", &sel_handle_status_ops, S_IRUGO}, + [SEL_POLICY] = {"policy", &sel_policy_ops, S_IRUSR}, /* last one */ {""} }; ret = simple_fill_super(sb, SELINUX_MAGIC, selinux_files); diff --git a/security/selinux/ss/Makefile b/security/selinux/ss/Makefile deleted file mode 100644 index 15d4e62917de..000000000000 --- a/security/selinux/ss/Makefile +++ /dev/null @@ -1,9 +0,0 @@ -# -# Makefile for building the SELinux security server as part of the kernel tree. -# - -EXTRA_CFLAGS += -Isecurity/selinux -Isecurity/selinux/include -obj-y := ss.o - -ss-y := ebitmap.o hashtab.o symtab.o sidtab.o avtab.o policydb.o services.o conditional.o mls.o - diff --git a/security/selinux/ss/avtab.c b/security/selinux/ss/avtab.c index 929480c6c430..a3dd9faa19c0 100644 --- a/security/selinux/ss/avtab.c +++ b/security/selinux/ss/avtab.c @@ -266,8 +266,8 @@ int avtab_alloc(struct avtab *h, u32 nrules) if (shift > 2) shift = shift - 2; nslot = 1 << shift; - if (nslot > MAX_AVTAB_SIZE) - nslot = MAX_AVTAB_SIZE; + if (nslot > MAX_AVTAB_HASH_BUCKETS) + nslot = MAX_AVTAB_HASH_BUCKETS; mask = nslot - 1; h->htable = kcalloc(nslot, sizeof(*(h->htable)), GFP_KERNEL); @@ -501,6 +501,48 @@ bad: goto out; } +int avtab_write_item(struct policydb *p, struct avtab_node *cur, void *fp) +{ + __le16 buf16[4]; + __le32 buf32[1]; + int rc; + + buf16[0] = cpu_to_le16(cur->key.source_type); + buf16[1] = cpu_to_le16(cur->key.target_type); + buf16[2] = cpu_to_le16(cur->key.target_class); + buf16[3] = cpu_to_le16(cur->key.specified); + rc = put_entry(buf16, sizeof(u16), 4, fp); + if (rc) + return rc; + buf32[0] = cpu_to_le32(cur->datum.data); + rc = put_entry(buf32, sizeof(u32), 1, fp); + if (rc) + return rc; + return 0; +} + +int avtab_write(struct policydb *p, struct avtab *a, void *fp) +{ + unsigned int i; + int rc = 0; + struct avtab_node *cur; + __le32 buf[1]; + + buf[0] = cpu_to_le32(a->nel); + rc = put_entry(buf, sizeof(u32), 1, fp); + if (rc) + return rc; + + for (i = 0; i < a->nslot; i++) { + for (cur = a->htable[i]; cur; cur = cur->next) { + rc = avtab_write_item(p, cur, fp); + if (rc) + return rc; + } + } + + return rc; +} void avtab_cache_init(void) { avtab_node_cachep = kmem_cache_create("avtab_node", diff --git a/security/selinux/ss/avtab.h b/security/selinux/ss/avtab.h index cd4f734e2749..dff0c75345c1 100644 --- a/security/selinux/ss/avtab.h +++ b/security/selinux/ss/avtab.h @@ -71,6 +71,8 @@ int avtab_read_item(struct avtab *a, void *fp, struct policydb *pol, void *p); int avtab_read(struct avtab *a, void *fp, struct policydb *pol); +int avtab_write_item(struct policydb *p, struct avtab_node *cur, void *fp); +int avtab_write(struct policydb *p, struct avtab *a, void *fp); struct avtab_node *avtab_insert_nonunique(struct avtab *h, struct avtab_key *key, struct avtab_datum *datum); @@ -85,7 +87,6 @@ void avtab_cache_destroy(void); #define MAX_AVTAB_HASH_BITS 11 #define MAX_AVTAB_HASH_BUCKETS (1 << MAX_AVTAB_HASH_BITS) #define MAX_AVTAB_HASH_MASK (MAX_AVTAB_HASH_BUCKETS-1) -#define MAX_AVTAB_SIZE MAX_AVTAB_HASH_BUCKETS #endif /* _SS_AVTAB_H_ */ diff --git a/security/selinux/ss/conditional.c b/security/selinux/ss/conditional.c index c91e150c3087..655fe1c6cc69 100644 --- a/security/selinux/ss/conditional.c +++ b/security/selinux/ss/conditional.c @@ -490,6 +490,129 @@ err: return rc; } +int cond_write_bool(void *vkey, void *datum, void *ptr) +{ + char *key = vkey; + struct cond_bool_datum *booldatum = datum; + struct policy_data *pd = ptr; + void *fp = pd->fp; + __le32 buf[3]; + u32 len; + int rc; + + len = strlen(key); + buf[0] = cpu_to_le32(booldatum->value); + buf[1] = cpu_to_le32(booldatum->state); + buf[2] = cpu_to_le32(len); + rc = put_entry(buf, sizeof(u32), 3, fp); + if (rc) + return rc; + rc = put_entry(key, 1, len, fp); + if (rc) + return rc; + return 0; +} + +/* + * cond_write_cond_av_list doesn't write out the av_list nodes. + * Instead it writes out the key/value pairs from the avtab. This + * is necessary because there is no way to uniquely identifying rules + * in the avtab so it is not possible to associate individual rules + * in the avtab with a conditional without saving them as part of + * the conditional. This means that the avtab with the conditional + * rules will not be saved but will be rebuilt on policy load. + */ +static int cond_write_av_list(struct policydb *p, + struct cond_av_list *list, struct policy_file *fp) +{ + __le32 buf[1]; + struct cond_av_list *cur_list; + u32 len; + int rc; + + len = 0; + for (cur_list = list; cur_list != NULL; cur_list = cur_list->next) + len++; + + buf[0] = cpu_to_le32(len); + rc = put_entry(buf, sizeof(u32), 1, fp); + if (rc) + return rc; + + if (len == 0) + return 0; + + for (cur_list = list; cur_list != NULL; cur_list = cur_list->next) { + rc = avtab_write_item(p, cur_list->node, fp); + if (rc) + return rc; + } + + return 0; +} + +int cond_write_node(struct policydb *p, struct cond_node *node, + struct policy_file *fp) +{ + struct cond_expr *cur_expr; + __le32 buf[2]; + int rc; + u32 len = 0; + + buf[0] = cpu_to_le32(node->cur_state); + rc = put_entry(buf, sizeof(u32), 1, fp); + if (rc) + return rc; + + for (cur_expr = node->expr; cur_expr != NULL; cur_expr = cur_expr->next) + len++; + + buf[0] = cpu_to_le32(len); + rc = put_entry(buf, sizeof(u32), 1, fp); + if (rc) + return rc; + + for (cur_expr = node->expr; cur_expr != NULL; cur_expr = cur_expr->next) { + buf[0] = cpu_to_le32(cur_expr->expr_type); + buf[1] = cpu_to_le32(cur_expr->bool); + rc = put_entry(buf, sizeof(u32), 2, fp); + if (rc) + return rc; + } + + rc = cond_write_av_list(p, node->true_list, fp); + if (rc) + return rc; + rc = cond_write_av_list(p, node->false_list, fp); + if (rc) + return rc; + + return 0; +} + +int cond_write_list(struct policydb *p, struct cond_node *list, void *fp) +{ + struct cond_node *cur; + u32 len; + __le32 buf[1]; + int rc; + + len = 0; + for (cur = list; cur != NULL; cur = cur->next) + len++; + buf[0] = cpu_to_le32(len); + rc = put_entry(buf, sizeof(u32), 1, fp); + if (rc) + return rc; + + for (cur = list; cur != NULL; cur = cur->next) { + rc = cond_write_node(p, cur, fp); + if (rc) + return rc; + } + + return 0; +} /* Determine whether additional permissions are granted by the conditional * av table, and if so, add them to the result */ diff --git a/security/selinux/ss/conditional.h b/security/selinux/ss/conditional.h index 53ddb013ae57..3f209c635295 100644 --- a/security/selinux/ss/conditional.h +++ b/security/selinux/ss/conditional.h @@ -69,6 +69,8 @@ int cond_index_bool(void *key, void *datum, void *datap); int cond_read_bool(struct policydb *p, struct hashtab *h, void *fp); int cond_read_list(struct policydb *p, void *fp); +int cond_write_bool(void *key, void *datum, void *ptr); +int cond_write_list(struct policydb *p, struct cond_node *list, void *fp); void cond_compute_av(struct avtab *ctab, struct avtab_key *key, struct av_decision *avd); diff --git a/security/selinux/ss/ebitmap.c b/security/selinux/ss/ebitmap.c index 04b6145d767f..d42951fcbe87 100644 --- a/security/selinux/ss/ebitmap.c +++ b/security/selinux/ss/ebitmap.c @@ -22,6 +22,8 @@ #include "ebitmap.h" #include "policydb.h" +#define BITS_PER_U64 (sizeof(u64) * 8) + int ebitmap_cmp(struct ebitmap *e1, struct ebitmap *e2) { struct ebitmap_node *n1, *n2; @@ -363,10 +365,10 @@ int ebitmap_read(struct ebitmap *e, void *fp) e->highbit = le32_to_cpu(buf[1]); count = le32_to_cpu(buf[2]); - if (mapunit != sizeof(u64) * 8) { + if (mapunit != BITS_PER_U64) { printk(KERN_ERR "SELinux: ebitmap: map size %u does not " "match my size %Zd (high bit was %d)\n", - mapunit, sizeof(u64) * 8, e->highbit); + mapunit, BITS_PER_U64, e->highbit); goto bad; } @@ -446,3 +448,78 @@ bad: ebitmap_destroy(e); goto out; } + +int ebitmap_write(struct ebitmap *e, void *fp) +{ + struct ebitmap_node *n; + u32 count; + __le32 buf[3]; + u64 map; + int bit, last_bit, last_startbit, rc; + + buf[0] = cpu_to_le32(BITS_PER_U64); + + count = 0; + last_bit = 0; + last_startbit = -1; + ebitmap_for_each_positive_bit(e, n, bit) { + if (rounddown(bit, (int)BITS_PER_U64) > last_startbit) { + count++; + last_startbit = rounddown(bit, BITS_PER_U64); + } + last_bit = roundup(bit + 1, BITS_PER_U64); + } + buf[1] = cpu_to_le32(last_bit); + buf[2] = cpu_to_le32(count); + + rc = put_entry(buf, sizeof(u32), 3, fp); + if (rc) + return rc; + + map = 0; + last_startbit = INT_MIN; + ebitmap_for_each_positive_bit(e, n, bit) { + if (rounddown(bit, (int)BITS_PER_U64) > last_startbit) { + __le64 buf64[1]; + + /* this is the very first bit */ + if (!map) { + last_startbit = rounddown(bit, BITS_PER_U64); + map = (u64)1 << (bit - last_startbit); + continue; + } + + /* write the last node */ + buf[0] = cpu_to_le32(last_startbit); + rc = put_entry(buf, sizeof(u32), 1, fp); + if (rc) + return rc; + + buf64[0] = cpu_to_le64(map); + rc = put_entry(buf64, sizeof(u64), 1, fp); + if (rc) + return rc; + + /* set up for the next node */ + map = 0; + last_startbit = rounddown(bit, BITS_PER_U64); + } + map |= (u64)1 << (bit - last_startbit); + } + /* write the last node */ + if (map) { + __le64 buf64[1]; + + /* write the last node */ + buf[0] = cpu_to_le32(last_startbit); + rc = put_entry(buf, sizeof(u32), 1, fp); + if (rc) + return rc; + + buf64[0] = cpu_to_le64(map); + rc = put_entry(buf64, sizeof(u64), 1, fp); + if (rc) + return rc; + } + return 0; +} diff --git a/security/selinux/ss/ebitmap.h b/security/selinux/ss/ebitmap.h index f283b4367f54..1f4e93c2ae86 100644 --- a/security/selinux/ss/ebitmap.h +++ b/security/selinux/ss/ebitmap.h @@ -123,6 +123,7 @@ int ebitmap_get_bit(struct ebitmap *e, unsigned long bit); int ebitmap_set_bit(struct ebitmap *e, unsigned long bit, int value); void ebitmap_destroy(struct ebitmap *e); int ebitmap_read(struct ebitmap *e, void *fp); +int ebitmap_write(struct ebitmap *e, void *fp); #ifdef CONFIG_NETLABEL int ebitmap_netlbl_export(struct ebitmap *ebmap, diff --git a/security/selinux/ss/policydb.c b/security/selinux/ss/policydb.c index 3a29704be8ce..94f630d93a5c 100644 --- a/security/selinux/ss/policydb.c +++ b/security/selinux/ss/policydb.c @@ -37,6 +37,7 @@ #include "policydb.h" #include "conditional.h" #include "mls.h" +#include "services.h" #define _DEBUG_HASHES @@ -185,9 +186,19 @@ static u32 rangetr_hash(struct hashtab *h, const void *k) static int rangetr_cmp(struct hashtab *h, const void *k1, const void *k2) { const struct range_trans *key1 = k1, *key2 = k2; - return (key1->source_type != key2->source_type || - key1->target_type != key2->target_type || - key1->target_class != key2->target_class); + int v; + + v = key1->source_type - key2->source_type; + if (v) + return v; + + v = key1->target_type - key2->target_type; + if (v) + return v; + + v = key1->target_class - key2->target_class; + + return v; } /* @@ -1624,11 +1635,11 @@ static int role_bounds_sanity_check(void *key, void *datum, void *datap) static int type_bounds_sanity_check(void *key, void *datum, void *datap) { - struct type_datum *upper, *type; + struct type_datum *upper; struct policydb *p = datap; int depth = 0; - upper = type = datum; + upper = datum; while (upper->bounds) { if (++depth == POLICYDB_BOUNDS_MAXDEPTH) { printk(KERN_ERR "SELinux: type %s: " @@ -2306,3 +2317,843 @@ bad: policydb_destroy(p); goto out; } + +/* + * Write a MLS level structure to a policydb binary + * representation file. + */ +static int mls_write_level(struct mls_level *l, void *fp) +{ + __le32 buf[1]; + int rc; + + buf[0] = cpu_to_le32(l->sens); + rc = put_entry(buf, sizeof(u32), 1, fp); + if (rc) + return rc; + + rc = ebitmap_write(&l->cat, fp); + if (rc) + return rc; + + return 0; +} + +/* + * Write a MLS range structure to a policydb binary + * representation file. + */ +static int mls_write_range_helper(struct mls_range *r, void *fp) +{ + __le32 buf[3]; + size_t items; + int rc, eq; + + eq = mls_level_eq(&r->level[1], &r->level[0]); + + if (eq) + items = 2; + else + items = 3; + buf[0] = cpu_to_le32(items-1); + buf[1] = cpu_to_le32(r->level[0].sens); + if (!eq) + buf[2] = cpu_to_le32(r->level[1].sens); + + BUG_ON(items > (sizeof(buf)/sizeof(buf[0]))); + + rc = put_entry(buf, sizeof(u32), items, fp); + if (rc) + return rc; + + rc = ebitmap_write(&r->level[0].cat, fp); + if (rc) + return rc; + if (!eq) { + rc = ebitmap_write(&r->level[1].cat, fp); + if (rc) + return rc; + } + + return 0; +} + +static int sens_write(void *vkey, void *datum, void *ptr) +{ + char *key = vkey; + struct level_datum *levdatum = datum; + struct policy_data *pd = ptr; + void *fp = pd->fp; + __le32 buf[2]; + size_t len; + int rc; + + len = strlen(key); + buf[0] = cpu_to_le32(len); + buf[1] = cpu_to_le32(levdatum->isalias); + rc = put_entry(buf, sizeof(u32), 2, fp); + if (rc) + return rc; + + rc = put_entry(key, 1, len, fp); + if (rc) + return rc; + + rc = mls_write_level(levdatum->level, fp); + if (rc) + return rc; + + return 0; +} + +static int cat_write(void *vkey, void *datum, void *ptr) +{ + char *key = vkey; + struct cat_datum *catdatum = datum; + struct policy_data *pd = ptr; + void *fp = pd->fp; + __le32 buf[3]; + size_t len; + int rc; + + len = strlen(key); + buf[0] = cpu_to_le32(len); + buf[1] = cpu_to_le32(catdatum->value); + buf[2] = cpu_to_le32(catdatum->isalias); + rc = put_entry(buf, sizeof(u32), 3, fp); + if (rc) + return rc; + + rc = put_entry(key, 1, len, fp); + if (rc) + return rc; + + return 0; +} + +static int role_trans_write(struct role_trans *r, void *fp) +{ + struct role_trans *tr; + u32 buf[3]; + size_t nel; + int rc; + + nel = 0; + for (tr = r; tr; tr = tr->next) + nel++; + buf[0] = cpu_to_le32(nel); + rc = put_entry(buf, sizeof(u32), 1, fp); + if (rc) + return rc; + for (tr = r; tr; tr = tr->next) { + buf[0] = cpu_to_le32(tr->role); + buf[1] = cpu_to_le32(tr->type); + buf[2] = cpu_to_le32(tr->new_role); + rc = put_entry(buf, sizeof(u32), 3, fp); + if (rc) + return rc; + } + + return 0; +} + +static int role_allow_write(struct role_allow *r, void *fp) +{ + struct role_allow *ra; + u32 buf[2]; + size_t nel; + int rc; + + nel = 0; + for (ra = r; ra; ra = ra->next) + nel++; + buf[0] = cpu_to_le32(nel); + rc = put_entry(buf, sizeof(u32), 1, fp); + if (rc) + return rc; + for (ra = r; ra; ra = ra->next) { + buf[0] = cpu_to_le32(ra->role); + buf[1] = cpu_to_le32(ra->new_role); + rc = put_entry(buf, sizeof(u32), 2, fp); + if (rc) + return rc; + } + return 0; +} + +/* + * Write a security context structure + * to a policydb binary representation file. + */ +static int context_write(struct policydb *p, struct context *c, + void *fp) +{ + int rc; + __le32 buf[3]; + + buf[0] = cpu_to_le32(c->user); + buf[1] = cpu_to_le32(c->role); + buf[2] = cpu_to_le32(c->type); + + rc = put_entry(buf, sizeof(u32), 3, fp); + if (rc) + return rc; + + rc = mls_write_range_helper(&c->range, fp); + if (rc) + return rc; + + return 0; +} + +/* + * The following *_write functions are used to + * write the symbol data to a policy database + * binary representation file. + */ + +static int perm_write(void *vkey, void *datum, void *fp) +{ + char *key = vkey; + struct perm_datum *perdatum = datum; + __le32 buf[2]; + size_t len; + int rc; + + len = strlen(key); + buf[0] = cpu_to_le32(len); + buf[1] = cpu_to_le32(perdatum->value); + rc = put_entry(buf, sizeof(u32), 2, fp); + if (rc) + return rc; + + rc = put_entry(key, 1, len, fp); + if (rc) + return rc; + + return 0; +} + +static int common_write(void *vkey, void *datum, void *ptr) +{ + char *key = vkey; + struct common_datum *comdatum = datum; + struct policy_data *pd = ptr; + void *fp = pd->fp; + __le32 buf[4]; + size_t len; + int rc; + + len = strlen(key); + buf[0] = cpu_to_le32(len); + buf[1] = cpu_to_le32(comdatum->value); + buf[2] = cpu_to_le32(comdatum->permissions.nprim); + buf[3] = cpu_to_le32(comdatum->permissions.table->nel); + rc = put_entry(buf, sizeof(u32), 4, fp); + if (rc) + return rc; + + rc = put_entry(key, 1, len, fp); + if (rc) + return rc; + + rc = hashtab_map(comdatum->permissions.table, perm_write, fp); + if (rc) + return rc; + + return 0; +} + +static int write_cons_helper(struct policydb *p, struct constraint_node *node, + void *fp) +{ + struct constraint_node *c; + struct constraint_expr *e; + __le32 buf[3]; + u32 nel; + int rc; + + for (c = node; c; c = c->next) { + nel = 0; + for (e = c->expr; e; e = e->next) + nel++; + buf[0] = cpu_to_le32(c->permissions); + buf[1] = cpu_to_le32(nel); + rc = put_entry(buf, sizeof(u32), 2, fp); + if (rc) + return rc; + for (e = c->expr; e; e = e->next) { + buf[0] = cpu_to_le32(e->expr_type); + buf[1] = cpu_to_le32(e->attr); + buf[2] = cpu_to_le32(e->op); + rc = put_entry(buf, sizeof(u32), 3, fp); + if (rc) + return rc; + + switch (e->expr_type) { + case CEXPR_NAMES: + rc = ebitmap_write(&e->names, fp); + if (rc) + return rc; + break; + default: + break; + } + } + } + + return 0; +} + +static int class_write(void *vkey, void *datum, void *ptr) +{ + char *key = vkey; + struct class_datum *cladatum = datum; + struct policy_data *pd = ptr; + void *fp = pd->fp; + struct policydb *p = pd->p; + struct constraint_node *c; + __le32 buf[6]; + u32 ncons; + size_t len, len2; + int rc; + + len = strlen(key); + if (cladatum->comkey) + len2 = strlen(cladatum->comkey); + else + len2 = 0; + + ncons = 0; + for (c = cladatum->constraints; c; c = c->next) + ncons++; + + buf[0] = cpu_to_le32(len); + buf[1] = cpu_to_le32(len2); + buf[2] = cpu_to_le32(cladatum->value); + buf[3] = cpu_to_le32(cladatum->permissions.nprim); + if (cladatum->permissions.table) + buf[4] = cpu_to_le32(cladatum->permissions.table->nel); + else + buf[4] = 0; + buf[5] = cpu_to_le32(ncons); + rc = put_entry(buf, sizeof(u32), 6, fp); + if (rc) + return rc; + + rc = put_entry(key, 1, len, fp); + if (rc) + return rc; + + if (cladatum->comkey) { + rc = put_entry(cladatum->comkey, 1, len2, fp); + if (rc) + return rc; + } + + rc = hashtab_map(cladatum->permissions.table, perm_write, fp); + if (rc) + return rc; + + rc = write_cons_helper(p, cladatum->constraints, fp); + if (rc) + return rc; + + /* write out the validatetrans rule */ + ncons = 0; + for (c = cladatum->validatetrans; c; c = c->next) + ncons++; + + buf[0] = cpu_to_le32(ncons); + rc = put_entry(buf, sizeof(u32), 1, fp); + if (rc) + return rc; + + rc = write_cons_helper(p, cladatum->validatetrans, fp); + if (rc) + return rc; + + return 0; +} + +static int role_write(void *vkey, void *datum, void *ptr) +{ + char *key = vkey; + struct role_datum *role = datum; + struct policy_data *pd = ptr; + void *fp = pd->fp; + struct policydb *p = pd->p; + __le32 buf[3]; + size_t items, len; + int rc; + + len = strlen(key); + items = 0; + buf[items++] = cpu_to_le32(len); + buf[items++] = cpu_to_le32(role->value); + if (p->policyvers >= POLICYDB_VERSION_BOUNDARY) + buf[items++] = cpu_to_le32(role->bounds); + + BUG_ON(items > (sizeof(buf)/sizeof(buf[0]))); + + rc = put_entry(buf, sizeof(u32), items, fp); + if (rc) + return rc; + + rc = put_entry(key, 1, len, fp); + if (rc) + return rc; + + rc = ebitmap_write(&role->dominates, fp); + if (rc) + return rc; + + rc = ebitmap_write(&role->types, fp); + if (rc) + return rc; + + return 0; +} + +static int type_write(void *vkey, void *datum, void *ptr) +{ + char *key = vkey; + struct type_datum *typdatum = datum; + struct policy_data *pd = ptr; + struct policydb *p = pd->p; + void *fp = pd->fp; + __le32 buf[4]; + int rc; + size_t items, len; + + len = strlen(key); + items = 0; + buf[items++] = cpu_to_le32(len); + buf[items++] = cpu_to_le32(typdatum->value); + if (p->policyvers >= POLICYDB_VERSION_BOUNDARY) { + u32 properties = 0; + + if (typdatum->primary) + properties |= TYPEDATUM_PROPERTY_PRIMARY; + + if (typdatum->attribute) + properties |= TYPEDATUM_PROPERTY_ATTRIBUTE; + + buf[items++] = cpu_to_le32(properties); + buf[items++] = cpu_to_le32(typdatum->bounds); + } else { + buf[items++] = cpu_to_le32(typdatum->primary); + } + BUG_ON(items > (sizeof(buf) / sizeof(buf[0]))); + rc = put_entry(buf, sizeof(u32), items, fp); + if (rc) + return rc; + + rc = put_entry(key, 1, len, fp); + if (rc) + return rc; + + return 0; +} + +static int user_write(void *vkey, void *datum, void *ptr) +{ + char *key = vkey; + struct user_datum *usrdatum = datum; + struct policy_data *pd = ptr; + struct policydb *p = pd->p; + void *fp = pd->fp; + __le32 buf[3]; + size_t items, len; + int rc; + + len = strlen(key); + items = 0; + buf[items++] = cpu_to_le32(len); + buf[items++] = cpu_to_le32(usrdatum->value); + if (p->policyvers >= POLICYDB_VERSION_BOUNDARY) + buf[items++] = cpu_to_le32(usrdatum->bounds); + BUG_ON(items > (sizeof(buf) / sizeof(buf[0]))); + rc = put_entry(buf, sizeof(u32), items, fp); + if (rc) + return rc; + + rc = put_entry(key, 1, len, fp); + if (rc) + return rc; + + rc = ebitmap_write(&usrdatum->roles, fp); + if (rc) + return rc; + + rc = mls_write_range_helper(&usrdatum->range, fp); + if (rc) + return rc; + + rc = mls_write_level(&usrdatum->dfltlevel, fp); + if (rc) + return rc; + + return 0; +} + +static int (*write_f[SYM_NUM]) (void *key, void *datum, + void *datap) = +{ + common_write, + class_write, + role_write, + type_write, + user_write, + cond_write_bool, + sens_write, + cat_write, +}; + +static int ocontext_write(struct policydb *p, struct policydb_compat_info *info, + void *fp) +{ + unsigned int i, j, rc; + size_t nel, len; + __le32 buf[3]; + u32 nodebuf[8]; + struct ocontext *c; + for (i = 0; i < info->ocon_num; i++) { + nel = 0; + for (c = p->ocontexts[i]; c; c = c->next) + nel++; + buf[0] = cpu_to_le32(nel); + rc = put_entry(buf, sizeof(u32), 1, fp); + if (rc) + return rc; + for (c = p->ocontexts[i]; c; c = c->next) { + switch (i) { + case OCON_ISID: + buf[0] = cpu_to_le32(c->sid[0]); + rc = put_entry(buf, sizeof(u32), 1, fp); + if (rc) + return rc; + rc = context_write(p, &c->context[0], fp); + if (rc) + return rc; + break; + case OCON_FS: + case OCON_NETIF: + len = strlen(c->u.name); + buf[0] = cpu_to_le32(len); + rc = put_entry(buf, sizeof(u32), 1, fp); + if (rc) + return rc; + rc = put_entry(c->u.name, 1, len, fp); + if (rc) + return rc; + rc = context_write(p, &c->context[0], fp); + if (rc) + return rc; + rc = context_write(p, &c->context[1], fp); + if (rc) + return rc; + break; + case OCON_PORT: + buf[0] = cpu_to_le32(c->u.port.protocol); + buf[1] = cpu_to_le32(c->u.port.low_port); + buf[2] = cpu_to_le32(c->u.port.high_port); + rc = put_entry(buf, sizeof(u32), 3, fp); + if (rc) + return rc; + rc = context_write(p, &c->context[0], fp); + if (rc) + return rc; + break; + case OCON_NODE: + nodebuf[0] = c->u.node.addr; /* network order */ + nodebuf[1] = c->u.node.mask; /* network order */ + rc = put_entry(nodebuf, sizeof(u32), 2, fp); + if (rc) + return rc; + rc = context_write(p, &c->context[0], fp); + if (rc) + return rc; + break; + case OCON_FSUSE: + buf[0] = cpu_to_le32(c->v.behavior); + len = strlen(c->u.name); + buf[1] = cpu_to_le32(len); + rc = put_entry(buf, sizeof(u32), 2, fp); + if (rc) + return rc; + rc = put_entry(c->u.name, 1, len, fp); + if (rc) + return rc; + rc = context_write(p, &c->context[0], fp); + if (rc) + return rc; + break; + case OCON_NODE6: + for (j = 0; j < 4; j++) + nodebuf[j] = c->u.node6.addr[j]; /* network order */ + for (j = 0; j < 4; j++) + nodebuf[j + 4] = c->u.node6.mask[j]; /* network order */ + rc = put_entry(nodebuf, sizeof(u32), 8, fp); + if (rc) + return rc; + rc = context_write(p, &c->context[0], fp); + if (rc) + return rc; + break; + } + } + } + return 0; +} + +static int genfs_write(struct policydb *p, void *fp) +{ + struct genfs *genfs; + struct ocontext *c; + size_t len; + __le32 buf[1]; + int rc; + + len = 0; + for (genfs = p->genfs; genfs; genfs = genfs->next) + len++; + buf[0] = cpu_to_le32(len); + rc = put_entry(buf, sizeof(u32), 1, fp); + if (rc) + return rc; + for (genfs = p->genfs; genfs; genfs = genfs->next) { + len = strlen(genfs->fstype); + buf[0] = cpu_to_le32(len); + rc = put_entry(buf, sizeof(u32), 1, fp); + if (rc) + return rc; + rc = put_entry(genfs->fstype, 1, len, fp); + if (rc) + return rc; + len = 0; + for (c = genfs->head; c; c = c->next) + len++; + buf[0] = cpu_to_le32(len); + rc = put_entry(buf, sizeof(u32), 1, fp); + if (rc) + return rc; + for (c = genfs->head; c; c = c->next) { + len = strlen(c->u.name); + buf[0] = cpu_to_le32(len); + rc = put_entry(buf, sizeof(u32), 1, fp); + if (rc) + return rc; + rc = put_entry(c->u.name, 1, len, fp); + if (rc) + return rc; + buf[0] = cpu_to_le32(c->v.sclass); + rc = put_entry(buf, sizeof(u32), 1, fp); + if (rc) + return rc; + rc = context_write(p, &c->context[0], fp); + if (rc) + return rc; + } + } + return 0; +} + +static int range_count(void *key, void *data, void *ptr) +{ + int *cnt = ptr; + *cnt = *cnt + 1; + + return 0; +} + +static int range_write_helper(void *key, void *data, void *ptr) +{ + __le32 buf[2]; + struct range_trans *rt = key; + struct mls_range *r = data; + struct policy_data *pd = ptr; + void *fp = pd->fp; + struct policydb *p = pd->p; + int rc; + + buf[0] = cpu_to_le32(rt->source_type); + buf[1] = cpu_to_le32(rt->target_type); + rc = put_entry(buf, sizeof(u32), 2, fp); + if (rc) + return rc; + if (p->policyvers >= POLICYDB_VERSION_RANGETRANS) { + buf[0] = cpu_to_le32(rt->target_class); + rc = put_entry(buf, sizeof(u32), 1, fp); + if (rc) + return rc; + } + rc = mls_write_range_helper(r, fp); + if (rc) + return rc; + + return 0; +} + +static int range_write(struct policydb *p, void *fp) +{ + size_t nel; + __le32 buf[1]; + int rc; + struct policy_data pd; + + pd.p = p; + pd.fp = fp; + + /* count the number of entries in the hashtab */ + nel = 0; + rc = hashtab_map(p->range_tr, range_count, &nel); + if (rc) + return rc; + + buf[0] = cpu_to_le32(nel); + rc = put_entry(buf, sizeof(u32), 1, fp); + if (rc) + return rc; + + /* actually write all of the entries */ + rc = hashtab_map(p->range_tr, range_write_helper, &pd); + if (rc) + return rc; + + return 0; +} + +/* + * Write the configuration data in a policy database + * structure to a policy database binary representation + * file. + */ +int policydb_write(struct policydb *p, void *fp) +{ + unsigned int i, num_syms; + int rc; + __le32 buf[4]; + u32 config; + size_t len; + struct policydb_compat_info *info; + + /* + * refuse to write policy older than compressed avtab + * to simplify the writer. There are other tests dropped + * since we assume this throughout the writer code. Be + * careful if you ever try to remove this restriction + */ + if (p->policyvers < POLICYDB_VERSION_AVTAB) { + printk(KERN_ERR "SELinux: refusing to write policy version %d." + " Because it is less than version %d\n", p->policyvers, + POLICYDB_VERSION_AVTAB); + return -EINVAL; + } + + config = 0; + if (p->mls_enabled) + config |= POLICYDB_CONFIG_MLS; + + if (p->reject_unknown) + config |= REJECT_UNKNOWN; + if (p->allow_unknown) + config |= ALLOW_UNKNOWN; + + /* Write the magic number and string identifiers. */ + buf[0] = cpu_to_le32(POLICYDB_MAGIC); + len = strlen(POLICYDB_STRING); + buf[1] = cpu_to_le32(len); + rc = put_entry(buf, sizeof(u32), 2, fp); + if (rc) + return rc; + rc = put_entry(POLICYDB_STRING, 1, len, fp); + if (rc) + return rc; + + /* Write the version, config, and table sizes. */ + info = policydb_lookup_compat(p->policyvers); + if (!info) { + printk(KERN_ERR "SELinux: compatibility lookup failed for policy " + "version %d", p->policyvers); + return rc; + } + + buf[0] = cpu_to_le32(p->policyvers); + buf[1] = cpu_to_le32(config); + buf[2] = cpu_to_le32(info->sym_num); + buf[3] = cpu_to_le32(info->ocon_num); + + rc = put_entry(buf, sizeof(u32), 4, fp); + if (rc) + return rc; + + if (p->policyvers >= POLICYDB_VERSION_POLCAP) { + rc = ebitmap_write(&p->policycaps, fp); + if (rc) + return rc; + } + + if (p->policyvers >= POLICYDB_VERSION_PERMISSIVE) { + rc = ebitmap_write(&p->permissive_map, fp); + if (rc) + return rc; + } + + num_syms = info->sym_num; + for (i = 0; i < num_syms; i++) { + struct policy_data pd; + + pd.fp = fp; + pd.p = p; + + buf[0] = cpu_to_le32(p->symtab[i].nprim); + buf[1] = cpu_to_le32(p->symtab[i].table->nel); + + rc = put_entry(buf, sizeof(u32), 2, fp); + if (rc) + return rc; + rc = hashtab_map(p->symtab[i].table, write_f[i], &pd); + if (rc) + return rc; + } + + rc = avtab_write(p, &p->te_avtab, fp); + if (rc) + return rc; + + rc = cond_write_list(p, p->cond_list, fp); + if (rc) + return rc; + + rc = role_trans_write(p->role_tr, fp); + if (rc) + return rc; + + rc = role_allow_write(p->role_allow, fp); + if (rc) + return rc; + + rc = ocontext_write(p, info, fp); + if (rc) + return rc; + + rc = genfs_write(p, fp); + if (rc) + return rc; + + rc = range_write(p, fp); + if (rc) + return rc; + + for (i = 0; i < p->p_types.nprim; i++) { + struct ebitmap *e = flex_array_get(p->type_attr_map_array, i); + + BUG_ON(!e); + rc = ebitmap_write(e, fp); + if (rc) + return rc; + } + + return 0; +} diff --git a/security/selinux/ss/policydb.h b/security/selinux/ss/policydb.h index 310e94442cb8..95d3d7de361e 100644 --- a/security/selinux/ss/policydb.h +++ b/security/selinux/ss/policydb.h @@ -254,6 +254,9 @@ struct policydb { struct ebitmap permissive_map; + /* length of this policy when it was loaded */ + size_t len; + unsigned int policyvers; unsigned int reject_unknown : 1; @@ -270,6 +273,7 @@ extern int policydb_class_isvalid(struct policydb *p, unsigned int class); extern int policydb_type_isvalid(struct policydb *p, unsigned int type); extern int policydb_role_isvalid(struct policydb *p, unsigned int role); extern int policydb_read(struct policydb *p, void *fp); +extern int policydb_write(struct policydb *p, void *fp); #define PERM_SYMTAB_SIZE 32 @@ -290,6 +294,11 @@ struct policy_file { size_t len; }; +struct policy_data { + struct policydb *p; + void *fp; +}; + static inline int next_entry(void *buf, struct policy_file *fp, size_t bytes) { if (bytes > fp->len) @@ -301,6 +310,17 @@ static inline int next_entry(void *buf, struct policy_file *fp, size_t bytes) return 0; } +static inline int put_entry(void *buf, size_t bytes, int num, struct policy_file *fp) +{ + size_t len = bytes * num; + + memcpy(fp->data, buf, len); + fp->data += len; + fp->len -= len; + + return 0; +} + extern u16 string_to_security_class(struct policydb *p, const char *name); extern u32 string_to_av_perm(struct policydb *p, u16 tclass, const char *name); diff --git a/security/selinux/ss/services.c b/security/selinux/ss/services.c index 9ea2feca3cd4..223c1ff6ef23 100644 --- a/security/selinux/ss/services.c +++ b/security/selinux/ss/services.c @@ -51,6 +51,7 @@ #include <linux/mutex.h> #include <linux/selinux.h> #include <linux/flex_array.h> +#include <linux/vmalloc.h> #include <net/netlabel.h> #include "flask.h" @@ -991,7 +992,8 @@ static int context_struct_to_string(struct context *context, char **scontext, u3 { char *scontextp; - *scontext = NULL; + if (scontext) + *scontext = NULL; *scontext_len = 0; if (context->len) { @@ -1008,6 +1010,9 @@ static int context_struct_to_string(struct context *context, char **scontext, u3 *scontext_len += strlen(policydb.p_type_val_to_name[context->type - 1]) + 1; *scontext_len += mls_compute_context_len(context); + if (!scontext) + return 0; + /* Allocate space for the context; caller must free this space. */ scontextp = kmalloc(*scontext_len, GFP_ATOMIC); if (!scontextp) @@ -1047,7 +1052,8 @@ static int security_sid_to_context_core(u32 sid, char **scontext, struct context *context; int rc = 0; - *scontext = NULL; + if (scontext) + *scontext = NULL; *scontext_len = 0; if (!ss_initialized) { @@ -1055,6 +1061,8 @@ static int security_sid_to_context_core(u32 sid, char **scontext, char *scontextp; *scontext_len = strlen(initial_sid_to_string[sid]) + 1; + if (!scontext) + goto out; scontextp = kmalloc(*scontext_len, GFP_ATOMIC); if (!scontextp) { rc = -ENOMEM; @@ -1769,6 +1777,7 @@ int security_load_policy(void *data, size_t len) return rc; } + policydb.len = len; rc = selinux_set_mapping(&policydb, secclass_map, ¤t_mapping, ¤t_mapping_size); @@ -1791,6 +1800,7 @@ int security_load_policy(void *data, size_t len) selinux_complete_init(); avc_ss_reset(seqno); selnl_notify_policyload(seqno); + selinux_status_update_policyload(seqno); selinux_netlbl_cache_invalidate(); selinux_xfrm_notify_policyload(); return 0; @@ -1804,6 +1814,7 @@ int security_load_policy(void *data, size_t len) if (rc) return rc; + newpolicydb.len = len; /* If switching between different policy types, log MLS status */ if (policydb.mls_enabled && !newpolicydb.mls_enabled) printk(KERN_INFO "SELinux: Disabling MLS support...\n"); @@ -1870,6 +1881,7 @@ int security_load_policy(void *data, size_t len) avc_ss_reset(seqno); selnl_notify_policyload(seqno); + selinux_status_update_policyload(seqno); selinux_netlbl_cache_invalidate(); selinux_xfrm_notify_policyload(); @@ -1883,6 +1895,17 @@ err: } +size_t security_policydb_len(void) +{ + size_t len; + + read_lock(&policy_rwlock); + len = policydb.len; + read_unlock(&policy_rwlock); + + return len; +} + /** * security_port_sid - Obtain the SID for a port. * @protocol: protocol number @@ -2374,6 +2397,7 @@ out: if (!rc) { avc_ss_reset(seqno); selnl_notify_policyload(seqno); + selinux_status_update_policyload(seqno); selinux_xfrm_notify_policyload(); } return rc; @@ -3129,3 +3153,38 @@ netlbl_sid_to_secattr_failure: return rc; } #endif /* CONFIG_NETLABEL */ + +/** + * security_read_policy - read the policy. + * @data: binary policy data + * @len: length of data in bytes + * + */ +int security_read_policy(void **data, ssize_t *len) +{ + int rc; + struct policy_file fp; + + if (!ss_initialized) + return -EINVAL; + + *len = security_policydb_len(); + + *data = vmalloc_user(*len); + if (!*data) + return -ENOMEM; + + fp.data = *data; + fp.len = *len; + + read_lock(&policy_rwlock); + rc = policydb_write(&policydb, &fp); + read_unlock(&policy_rwlock); + + if (rc) + return rc; + + *len = (unsigned long)fp.data - (unsigned long)*data; + return 0; + +} diff --git a/security/selinux/ss/status.c b/security/selinux/ss/status.c new file mode 100644 index 000000000000..d982365f9d1a --- /dev/null +++ b/security/selinux/ss/status.c @@ -0,0 +1,126 @@ +/* + * mmap based event notifications for SELinux + * + * Author: KaiGai Kohei <kaigai@ak.jp.nec.com> + * + * Copyright (C) 2010 NEC corporation + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2, + * as published by the Free Software Foundation. + */ +#include <linux/kernel.h> +#include <linux/gfp.h> +#include <linux/mm.h> +#include <linux/mutex.h> +#include "avc.h" +#include "services.h" + +/* + * The selinux_status_page shall be exposed to userspace applications + * using mmap interface on /selinux/status. + * It enables to notify applications a few events that will cause reset + * of userspace access vector without context switching. + * + * The selinux_kernel_status structure on the head of status page is + * protected from concurrent accesses using seqlock logic, so userspace + * application should reference the status page according to the seqlock + * logic. + * + * Typically, application checks status->sequence at the head of access + * control routine. If it is odd-number, kernel is updating the status, + * so please wait for a moment. If it is changed from the last sequence + * number, it means something happen, so application will reset userspace + * avc, if needed. + * In most cases, application shall confirm the kernel status is not + * changed without any system call invocations. + */ +static struct page *selinux_status_page; +static DEFINE_MUTEX(selinux_status_lock); + +/* + * selinux_kernel_status_page + * + * It returns a reference to selinux_status_page. If the status page is + * not allocated yet, it also tries to allocate it at the first time. + */ +struct page *selinux_kernel_status_page(void) +{ + struct selinux_kernel_status *status; + struct page *result = NULL; + + mutex_lock(&selinux_status_lock); + if (!selinux_status_page) { + selinux_status_page = alloc_page(GFP_KERNEL|__GFP_ZERO); + + if (selinux_status_page) { + status = page_address(selinux_status_page); + + status->version = SELINUX_KERNEL_STATUS_VERSION; + status->sequence = 0; + status->enforcing = selinux_enforcing; + /* + * NOTE: the next policyload event shall set + * a positive value on the status->policyload, + * although it may not be 1, but never zero. + * So, application can know it was updated. + */ + status->policyload = 0; + status->deny_unknown = !security_get_allow_unknown(); + } + } + result = selinux_status_page; + mutex_unlock(&selinux_status_lock); + + return result; +} + +/* + * selinux_status_update_setenforce + * + * It updates status of the current enforcing/permissive mode. + */ +void selinux_status_update_setenforce(int enforcing) +{ + struct selinux_kernel_status *status; + + mutex_lock(&selinux_status_lock); + if (selinux_status_page) { + status = page_address(selinux_status_page); + + status->sequence++; + smp_wmb(); + + status->enforcing = enforcing; + + smp_wmb(); + status->sequence++; + } + mutex_unlock(&selinux_status_lock); +} + +/* + * selinux_status_update_policyload + * + * It updates status of the times of policy reloaded, and current + * setting of deny_unknown. + */ +void selinux_status_update_policyload(int seqno) +{ + struct selinux_kernel_status *status; + + mutex_lock(&selinux_status_lock); + if (selinux_status_page) { + status = page_address(selinux_status_page); + + status->sequence++; + smp_wmb(); + + status->policyload = seqno; + status->deny_unknown = !security_get_allow_unknown(); + + smp_wmb(); + status->sequence++; + } + mutex_unlock(&selinux_status_lock); +} diff --git a/security/smack/smack_lsm.c b/security/smack/smack_lsm.c index c448d57ae2b7..bc39f4067af6 100644 --- a/security/smack/smack_lsm.c +++ b/security/smack/smack_lsm.c @@ -1281,12 +1281,11 @@ static int smack_task_getioprio(struct task_struct *p) * * Return 0 if read access is permitted */ -static int smack_task_setscheduler(struct task_struct *p, int policy, - struct sched_param *lp) +static int smack_task_setscheduler(struct task_struct *p) { int rc; - rc = cap_task_setscheduler(p, policy, lp); + rc = cap_task_setscheduler(p); if (rc == 0) rc = smk_curacc_on_task(p, MAY_WRITE); return rc; @@ -3005,7 +3004,8 @@ static int smack_secid_to_secctx(u32 secid, char **secdata, u32 *seclen) { char *sp = smack_from_secid(secid); - *secdata = sp; + if (secdata) + *secdata = sp; *seclen = strlen(sp); return 0; } diff --git a/security/tomoyo/common.c b/security/tomoyo/common.c index c668b447c725..7556315c1978 100644 --- a/security/tomoyo/common.c +++ b/security/tomoyo/common.c @@ -768,8 +768,10 @@ static bool tomoyo_select_one(struct tomoyo_io_buffer *head, const char *data) return true; /* Do nothing if open(O_WRONLY). */ memset(&head->r, 0, sizeof(head->r)); head->r.print_this_domain_only = true; - head->r.eof = !domain; - head->r.domain = &domain->list; + if (domain) + head->r.domain = &domain->list; + else + head->r.eof = 1; tomoyo_io_printf(head, "# select %s\n", data); if (domain && domain->is_deleted) tomoyo_io_printf(head, "# This is a deleted domain.\n"); @@ -2051,13 +2053,22 @@ void tomoyo_check_profile(void) const u8 profile = domain->profile; if (tomoyo_profile_ptr[profile]) continue; + printk(KERN_ERR "You need to define profile %u before using it.\n", + profile); + printk(KERN_ERR "Please see http://tomoyo.sourceforge.jp/2.3/ " + "for more information.\n"); panic("Profile %u (used by '%s') not defined.\n", profile, domain->domainname->name); } tomoyo_read_unlock(idx); - if (tomoyo_profile_version != 20090903) + if (tomoyo_profile_version != 20090903) { + printk(KERN_ERR "You need to install userland programs for " + "TOMOYO 2.3 and initialize policy configuration.\n"); + printk(KERN_ERR "Please see http://tomoyo.sourceforge.jp/2.3/ " + "for more information.\n"); panic("Profile version %u is not supported.\n", tomoyo_profile_version); + } printk(KERN_INFO "TOMOYO: 2.3.0\n"); printk(KERN_INFO "Mandatory Access Control activated.\n"); } diff --git a/sound/core/rawmidi.c b/sound/core/rawmidi.c index a7868ad4d530..cbbed0db9e56 100644 --- a/sound/core/rawmidi.c +++ b/sound/core/rawmidi.c @@ -535,13 +535,15 @@ static int snd_rawmidi_release(struct inode *inode, struct file *file) { struct snd_rawmidi_file *rfile; struct snd_rawmidi *rmidi; + struct module *module; rfile = file->private_data; rmidi = rfile->rmidi; rawmidi_release_priv(rfile); kfree(rfile); + module = rmidi->card->module; snd_card_file_remove(rmidi->card, file); - module_put(rmidi->card->module); + module_put(module); return 0; } diff --git a/sound/pcmcia/pdaudiocf/pdaudiocf.c b/sound/pcmcia/pdaudiocf/pdaudiocf.c index 7ab9174a8a84..8cc4733698a0 100644 --- a/sound/pcmcia/pdaudiocf/pdaudiocf.c +++ b/sound/pcmcia/pdaudiocf/pdaudiocf.c @@ -142,10 +142,9 @@ static int snd_pdacf_probe(struct pcmcia_device *link) link->resource[0]->flags |= IO_DATA_PATH_WIDTH_AUTO; link->resource[0]->end = 16; - link->conf.Attributes = CONF_ENABLE_IRQ | CONF_ENABLE_PULSE_IRQ; - link->conf.IntType = INT_MEMORY_AND_IO; - link->conf.ConfigIndex = 1; - link->conf.Present = PRESENT_OPTION; + link->config_flags = CONF_ENABLE_IRQ | CONF_ENABLE_PULSE_IRQ; + link->config_index = 1; + link->config_regs = PRESENT_OPTION; return pdacf_config(link); } @@ -217,7 +216,8 @@ static int pdacf_config(struct pcmcia_device *link) int ret; snd_printdd(KERN_DEBUG "pdacf_config called\n"); - link->conf.ConfigIndex = 0x5; + link->config_index = 0x5; + link->config_flags |= CONF_ENABLE_IRQ | CONF_ENABLE_PULSE_IRQ; ret = pcmcia_request_io(link); if (ret) @@ -227,7 +227,7 @@ static int pdacf_config(struct pcmcia_device *link) if (ret) goto failed; - ret = pcmcia_request_configuration(link, &link->conf); + ret = pcmcia_enable_device(link); if (ret) goto failed; @@ -287,9 +287,7 @@ MODULE_DEVICE_TABLE(pcmcia, snd_pdacf_ids); static struct pcmcia_driver pdacf_cs_driver = { .owner = THIS_MODULE, - .drv = { - .name = "snd-pdaudiocf", - }, + .name = "snd-pdaudiocf", .probe = snd_pdacf_probe, .remove = snd_pdacf_detach, .id_table = snd_pdacf_ids, diff --git a/sound/pcmcia/pdaudiocf/pdaudiocf.h b/sound/pcmcia/pdaudiocf/pdaudiocf.h index 5cc3e4573074..bd26e092aead 100644 --- a/sound/pcmcia/pdaudiocf/pdaudiocf.h +++ b/sound/pcmcia/pdaudiocf/pdaudiocf.h @@ -24,7 +24,6 @@ #include <sound/pcm.h> #include <asm/io.h> #include <linux/interrupt.h> -#include <pcmcia/cs.h> #include <pcmcia/cistpl.h> #include <pcmcia/ds.h> diff --git a/sound/pcmcia/vx/vxpocket.c b/sound/pcmcia/vx/vxpocket.c index a6edfc3be29a..80000d631f88 100644 --- a/sound/pcmcia/vx/vxpocket.c +++ b/sound/pcmcia/vx/vxpocket.c @@ -2,7 +2,7 @@ * Driver for Digigram VXpocket V2/440 soundcards * * Copyright (c) 2002 by Takashi Iwai <tiwai@suse.de> - * + * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or @@ -162,10 +162,9 @@ static int snd_vxpocket_new(struct snd_card *card, int ibl, link->resource[0]->flags |= IO_DATA_PATH_WIDTH_AUTO; link->resource[0]->end = 16; - link->conf.Attributes = CONF_ENABLE_IRQ; - link->conf.IntType = INT_MEMORY_AND_IO; - link->conf.ConfigIndex = 1; - link->conf.Present = PRESENT_OPTION; + link->config_flags |= CONF_ENABLE_IRQ; + link->config_index = 1; + link->config_regs = PRESENT_OPTION; *chip_ret = vxp; return 0; @@ -234,7 +233,7 @@ static int vxpocket_config(struct pcmcia_device *link) if (ret) goto failed; - ret = pcmcia_request_configuration(link, &link->conf); + ret = pcmcia_enable_device(link); if (ret) goto failed; @@ -359,9 +358,7 @@ MODULE_DEVICE_TABLE(pcmcia, vxp_ids); static struct pcmcia_driver vxp_cs_driver = { .owner = THIS_MODULE, - .drv = { - .name = "snd-vxpocket", - }, + .name = "snd-vxpocket", .probe = vxpocket_probe, .remove = vxpocket_detach, .id_table = vxp_ids, diff --git a/sound/pcmcia/vx/vxpocket.h b/sound/pcmcia/vx/vxpocket.h index d9110669d042..13d658c1a216 100644 --- a/sound/pcmcia/vx/vxpocket.h +++ b/sound/pcmcia/vx/vxpocket.h @@ -23,7 +23,6 @@ #include <sound/vx_core.h> -#include <pcmcia/cs.h> #include <pcmcia/cistpl.h> #include <pcmcia/ds.h> diff --git a/tools/perf/Documentation/perf-annotate.txt b/tools/perf/Documentation/perf-annotate.txt index 5164a655c39f..b2c63309a651 100644 --- a/tools/perf/Documentation/perf-annotate.txt +++ b/tools/perf/Documentation/perf-annotate.txt @@ -8,7 +8,7 @@ perf-annotate - Read perf.data (created by perf record) and display annotated co SYNOPSIS -------- [verse] -'perf annotate' [-i <file> | --input=file] symbol_name +'perf annotate' [-i <file> | --input=file] [symbol_name] DESCRIPTION ----------- @@ -24,6 +24,13 @@ OPTIONS --input=:: Input file name. (default: perf.data) +--stdio:: Use the stdio interface. + +--tui:: Use the TUI interface Use of --tui requires a tty, if one is not + present, as when piping to other commands, the stdio interface is + used. This interfaces starts by centering on the line with more + samples, TAB/UNTAB cycles thru the lines with more samples. + SEE ALSO -------- -linkperf:perf-record[1] +linkperf:perf-record[1], linkperf:perf-report[1] diff --git a/tools/perf/Documentation/perf-report.txt b/tools/perf/Documentation/perf-report.txt index abfabe9147a4..12052c9ed0ba 100644 --- a/tools/perf/Documentation/perf-report.txt +++ b/tools/perf/Documentation/perf-report.txt @@ -65,6 +65,13 @@ OPTIONS the tree is considered as a new profiled object. + Default: fractal,0.5. +--stdio:: Use the stdio interface. + +--tui:: Use the TUI interface, that is integrated with annotate and allows + zooming into DSOs or threads, among other features. Use of --tui + requires a tty, if one is not present, as when piping to other + commands, the stdio interface is used. + SEE ALSO -------- linkperf:perf-stat[1] diff --git a/tools/perf/Makefile b/tools/perf/Makefile index 1950e19af1cf..d1db0f676a4b 100644 --- a/tools/perf/Makefile +++ b/tools/perf/Makefile @@ -313,6 +313,9 @@ TEST_PROGRAMS = SCRIPT_SH += perf-archive.sh +grep-libs = $(filter -l%,$(1)) +strip-libs = $(filter-out -l%,$(1)) + # # No Perl scripts right now: # @@ -588,14 +591,17 @@ endif ifdef NO_LIBPERL BASIC_CFLAGS += -DNO_LIBPERL else - PERL_EMBED_LDOPTS = `perl -MExtUtils::Embed -e ldopts 2>/dev/null` + PERL_EMBED_LDOPTS = $(shell perl -MExtUtils::Embed -e ldopts 2>/dev/null) + PERL_EMBED_LDFLAGS = $(call strip-libs,$(PERL_EMBED_LDOPTS)) + PERL_EMBED_LIBADD = $(call grep-libs,$(PERL_EMBED_LDOPTS)) PERL_EMBED_CCOPTS = `perl -MExtUtils::Embed -e ccopts 2>/dev/null` FLAGS_PERL_EMBED=$(PERL_EMBED_CCOPTS) $(PERL_EMBED_LDOPTS) ifneq ($(call try-cc,$(SOURCE_PERL_EMBED),$(FLAGS_PERL_EMBED)),y) BASIC_CFLAGS += -DNO_LIBPERL else - ALL_LDFLAGS += $(PERL_EMBED_LDOPTS) + ALL_LDFLAGS += $(PERL_EMBED_LDFLAGS) + EXTLIBS += $(PERL_EMBED_LIBADD) LIB_OBJS += $(OUTPUT)util/scripting-engines/trace-event-perl.o LIB_OBJS += $(OUTPUT)scripts/perl/Perf-Trace-Util/Context.o endif @@ -604,13 +610,16 @@ endif ifdef NO_LIBPYTHON BASIC_CFLAGS += -DNO_LIBPYTHON else - PYTHON_EMBED_LDOPTS = `python-config --ldflags 2>/dev/null` + PYTHON_EMBED_LDOPTS = $(shell python-config --ldflags 2>/dev/null) + PYTHON_EMBED_LDFLAGS = $(call strip-libs,$(PYTHON_EMBED_LDOPTS)) + PYTHON_EMBED_LIBADD = $(call grep-libs,$(PYTHON_EMBED_LDOPTS)) PYTHON_EMBED_CCOPTS = `python-config --cflags 2>/dev/null` FLAGS_PYTHON_EMBED=$(PYTHON_EMBED_CCOPTS) $(PYTHON_EMBED_LDOPTS) ifneq ($(call try-cc,$(SOURCE_PYTHON_EMBED),$(FLAGS_PYTHON_EMBED)),y) BASIC_CFLAGS += -DNO_LIBPYTHON else - ALL_LDFLAGS += $(PYTHON_EMBED_LDOPTS) + ALL_LDFLAGS += $(PYTHON_EMBED_LDFLAGS) + EXTLIBS += $(PYTHON_EMBED_LIBADD) LIB_OBJS += $(OUTPUT)util/scripting-engines/trace-event-python.o LIB_OBJS += $(OUTPUT)scripts/python/Perf-Trace-Util/Context.o endif @@ -653,6 +662,15 @@ else endif endif + +ifdef NO_STRLCPY + BASIC_CFLAGS += -DNO_STRLCPY +else + ifneq ($(call try-cc,$(SOURCE_STRLCPY),),y) + BASIC_CFLAGS += -DNO_STRLCPY + endif +endif + ifndef CC_LD_DYNPATH ifdef NO_R_TO_GCC_LINKER # Some gcc does not accept and pass -R to the linker to specify @@ -910,8 +928,8 @@ $(OUTPUT)perf.o: perf.c $(OUTPUT)common-cmds.h $(OUTPUT)PERF-CFLAGS $(ALL_CFLAGS) -c $(filter %.c,$^) -o $@ $(OUTPUT)perf$X: $(OUTPUT)perf.o $(BUILTIN_OBJS) $(PERFLIBS) - $(QUIET_LINK)$(CC) $(ALL_CFLAGS) -o $@ $(OUTPUT)perf.o \ - $(BUILTIN_OBJS) $(ALL_LDFLAGS) $(LIBS) + $(QUIET_LINK)$(CC) $(ALL_CFLAGS) $(ALL_LDFLAGS) $(OUTPUT)perf.o \ + $(BUILTIN_OBJS) $(LIBS) -o $@ $(OUTPUT)builtin-help.o: builtin-help.c $(OUTPUT)common-cmds.h $(OUTPUT)PERF-CFLAGS $(QUIET_CC)$(CC) -o $@ -c $(ALL_CFLAGS) \ diff --git a/tools/perf/builtin-annotate.c b/tools/perf/builtin-annotate.c index 1478dc64bf15..6d5604d8df95 100644 --- a/tools/perf/builtin-annotate.c +++ b/tools/perf/builtin-annotate.c @@ -28,7 +28,7 @@ static char const *input_name = "perf.data"; -static bool force; +static bool force, use_tui, use_stdio; static bool full_paths; @@ -321,7 +321,7 @@ static int hist_entry__tty_annotate(struct hist_entry *he) static void hists__find_annotations(struct hists *self) { - struct rb_node *first = rb_first(&self->entries), *nd = first; + struct rb_node *nd = rb_first(&self->entries), *next; int key = KEY_RIGHT; while (nd) { @@ -343,20 +343,19 @@ find_next: if (use_browser > 0) { key = hist_entry__tui_annotate(he); - if (is_exit_key(key)) - break; switch (key) { case KEY_RIGHT: - case '\t': - nd = rb_next(nd); + next = rb_next(nd); break; case KEY_LEFT: - if (nd == first) - continue; - nd = rb_prev(nd); - default: + next = rb_prev(nd); break; + default: + return; } + + if (next != NULL) + nd = next; } else { hist_entry__tty_annotate(he); nd = rb_next(nd); @@ -428,6 +427,8 @@ static const struct option options[] = { "be more verbose (show symbol address, etc)"), OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace, "dump raw trace in ASCII"), + OPT_BOOLEAN(0, "tui", &use_tui, "Use the TUI interface"), + OPT_BOOLEAN(0, "stdio", &use_stdio, "Use the stdio interface"), OPT_STRING('k', "vmlinux", &symbol_conf.vmlinux_name, "file", "vmlinux pathname"), OPT_BOOLEAN('m', "modules", &symbol_conf.use_modules, @@ -443,6 +444,11 @@ int cmd_annotate(int argc, const char **argv, const char *prefix __used) { argc = parse_options(argc, argv, options, annotate_usage, 0); + if (use_stdio) + use_browser = 0; + else if (use_tui) + use_browser = 1; + setup_browser(); symbol_conf.priv_size = sizeof(struct sym_priv); diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c index 55fc1f46892a..5de405d45230 100644 --- a/tools/perf/builtin-report.c +++ b/tools/perf/builtin-report.c @@ -32,7 +32,7 @@ static char const *input_name = "perf.data"; -static bool force; +static bool force, use_tui, use_stdio; static bool hide_unresolved; static bool dont_use_callchains; @@ -107,7 +107,8 @@ static int perf_session__add_hist_entry(struct perf_session *self, goto out_free_syms; err = 0; if (symbol_conf.use_callchain) { - err = append_chain(he->callchain, data->callchain, syms, data->period); + err = callchain_append(he->callchain, data->callchain, syms, + data->period); if (err) goto out_free_syms; } @@ -450,6 +451,8 @@ static const struct option options[] = { "Show per-thread event counters"), OPT_STRING(0, "pretty", &pretty_printing_style, "key", "pretty printing style key: normal raw"), + OPT_BOOLEAN(0, "tui", &use_tui, "Use the TUI interface"), + OPT_BOOLEAN(0, "stdio", &use_stdio, "Use the stdio interface"), OPT_STRING('s', "sort", &sort_order, "key[,key2...]", "sort by key(s): pid, comm, dso, symbol, parent"), OPT_BOOLEAN(0, "showcpuutilization", &symbol_conf.show_cpu_utilization, @@ -482,8 +485,15 @@ int cmd_report(int argc, const char **argv, const char *prefix __used) { argc = parse_options(argc, argv, options, report_usage, 0); + if (use_stdio) + use_browser = 0; + else if (use_tui) + use_browser = 1; + if (strcmp(input_name, "-") != 0) setup_browser(); + else + use_browser = 0; /* * Only in the newt browser we are doing integrated annotation, * so don't allocate extra space that won't be used in the stdio diff --git a/tools/perf/feature-tests.mak b/tools/perf/feature-tests.mak index 7a7b60859053..b253db634f04 100644 --- a/tools/perf/feature-tests.mak +++ b/tools/perf/feature-tests.mak @@ -110,6 +110,17 @@ int main(void) } endef +define SOURCE_STRLCPY +#include <stdlib.h> +extern size_t strlcpy(char *dest, const char *src, size_t size); + +int main(void) +{ + strlcpy(NULL, NULL, 0); + return 0; +} +endef + # try-cc # Usage: option = $(call try-cc, source-to-build, cc-options) try-cc = $(shell sh -c \ diff --git a/tools/perf/scripts/python/bin/netdev-times-record b/tools/perf/scripts/python/bin/netdev-times-record new file mode 100644 index 000000000000..d931a828126b --- /dev/null +++ b/tools/perf/scripts/python/bin/netdev-times-record @@ -0,0 +1,8 @@ +#!/bin/bash +perf record -a -e net:net_dev_xmit -e net:net_dev_queue \ + -e net:netif_receive_skb -e net:netif_rx \ + -e skb:consume_skb -e skb:kfree_skb \ + -e skb:skb_copy_datagram_iovec -e napi:napi_poll \ + -e irq:irq_handler_entry -e irq:irq_handler_exit \ + -e irq:softirq_entry -e irq:softirq_exit \ + -e irq:softirq_raise $@ diff --git a/tools/perf/scripts/python/bin/netdev-times-report b/tools/perf/scripts/python/bin/netdev-times-report new file mode 100644 index 000000000000..c3d0a638123d --- /dev/null +++ b/tools/perf/scripts/python/bin/netdev-times-report @@ -0,0 +1,5 @@ +#!/bin/bash +# description: display a process of packet and processing time +# args: [tx] [rx] [dev=] [debug] + +perf trace -s ~/libexec/perf-core/scripts/python/netdev-times.py $@ diff --git a/tools/perf/scripts/python/netdev-times.py b/tools/perf/scripts/python/netdev-times.py new file mode 100644 index 000000000000..9aa0a32972e8 --- /dev/null +++ b/tools/perf/scripts/python/netdev-times.py @@ -0,0 +1,464 @@ +# Display a process of packets and processed time. +# It helps us to investigate networking or network device. +# +# options +# tx: show only tx chart +# rx: show only rx chart +# dev=: show only thing related to specified device +# debug: work with debug mode. It shows buffer status. + +import os +import sys + +sys.path.append(os.environ['PERF_EXEC_PATH'] + \ + '/scripts/python/Perf-Trace-Util/lib/Perf/Trace') + +from perf_trace_context import * +from Core import * +from Util import * + +all_event_list = []; # insert all tracepoint event related with this script +irq_dic = {}; # key is cpu and value is a list which stacks irqs + # which raise NET_RX softirq +net_rx_dic = {}; # key is cpu and value include time of NET_RX softirq-entry + # and a list which stacks receive +receive_hunk_list = []; # a list which include a sequence of receive events +rx_skb_list = []; # received packet list for matching + # skb_copy_datagram_iovec + +buffer_budget = 65536; # the budget of rx_skb_list, tx_queue_list and + # tx_xmit_list +of_count_rx_skb_list = 0; # overflow count + +tx_queue_list = []; # list of packets which pass through dev_queue_xmit +of_count_tx_queue_list = 0; # overflow count + +tx_xmit_list = []; # list of packets which pass through dev_hard_start_xmit +of_count_tx_xmit_list = 0; # overflow count + +tx_free_list = []; # list of packets which is freed + +# options +show_tx = 0; +show_rx = 0; +dev = 0; # store a name of device specified by option "dev=" +debug = 0; + +# indices of event_info tuple +EINFO_IDX_NAME= 0 +EINFO_IDX_CONTEXT=1 +EINFO_IDX_CPU= 2 +EINFO_IDX_TIME= 3 +EINFO_IDX_PID= 4 +EINFO_IDX_COMM= 5 + +# Calculate a time interval(msec) from src(nsec) to dst(nsec) +def diff_msec(src, dst): + return (dst - src) / 1000000.0 + +# Display a process of transmitting a packet +def print_transmit(hunk): + if dev != 0 and hunk['dev'].find(dev) < 0: + return + print "%7s %5d %6d.%06dsec %12.3fmsec %12.3fmsec" % \ + (hunk['dev'], hunk['len'], + nsecs_secs(hunk['queue_t']), + nsecs_nsecs(hunk['queue_t'])/1000, + diff_msec(hunk['queue_t'], hunk['xmit_t']), + diff_msec(hunk['xmit_t'], hunk['free_t'])) + +# Format for displaying rx packet processing +PF_IRQ_ENTRY= " irq_entry(+%.3fmsec irq=%d:%s)" +PF_SOFT_ENTRY=" softirq_entry(+%.3fmsec)" +PF_NAPI_POLL= " napi_poll_exit(+%.3fmsec %s)" +PF_JOINT= " |" +PF_WJOINT= " | |" +PF_NET_RECV= " |---netif_receive_skb(+%.3fmsec skb=%x len=%d)" +PF_NET_RX= " |---netif_rx(+%.3fmsec skb=%x)" +PF_CPY_DGRAM= " | skb_copy_datagram_iovec(+%.3fmsec %d:%s)" +PF_KFREE_SKB= " | kfree_skb(+%.3fmsec location=%x)" +PF_CONS_SKB= " | consume_skb(+%.3fmsec)" + +# Display a process of received packets and interrputs associated with +# a NET_RX softirq +def print_receive(hunk): + show_hunk = 0 + irq_list = hunk['irq_list'] + cpu = irq_list[0]['cpu'] + base_t = irq_list[0]['irq_ent_t'] + # check if this hunk should be showed + if dev != 0: + for i in range(len(irq_list)): + if irq_list[i]['name'].find(dev) >= 0: + show_hunk = 1 + break + else: + show_hunk = 1 + if show_hunk == 0: + return + + print "%d.%06dsec cpu=%d" % \ + (nsecs_secs(base_t), nsecs_nsecs(base_t)/1000, cpu) + for i in range(len(irq_list)): + print PF_IRQ_ENTRY % \ + (diff_msec(base_t, irq_list[i]['irq_ent_t']), + irq_list[i]['irq'], irq_list[i]['name']) + print PF_JOINT + irq_event_list = irq_list[i]['event_list'] + for j in range(len(irq_event_list)): + irq_event = irq_event_list[j] + if irq_event['event'] == 'netif_rx': + print PF_NET_RX % \ + (diff_msec(base_t, irq_event['time']), + irq_event['skbaddr']) + print PF_JOINT + print PF_SOFT_ENTRY % \ + diff_msec(base_t, hunk['sirq_ent_t']) + print PF_JOINT + event_list = hunk['event_list'] + for i in range(len(event_list)): + event = event_list[i] + if event['event_name'] == 'napi_poll': + print PF_NAPI_POLL % \ + (diff_msec(base_t, event['event_t']), event['dev']) + if i == len(event_list) - 1: + print "" + else: + print PF_JOINT + else: + print PF_NET_RECV % \ + (diff_msec(base_t, event['event_t']), event['skbaddr'], + event['len']) + if 'comm' in event.keys(): + print PF_WJOINT + print PF_CPY_DGRAM % \ + (diff_msec(base_t, event['comm_t']), + event['pid'], event['comm']) + elif 'handle' in event.keys(): + print PF_WJOINT + if event['handle'] == "kfree_skb": + print PF_KFREE_SKB % \ + (diff_msec(base_t, + event['comm_t']), + event['location']) + elif event['handle'] == "consume_skb": + print PF_CONS_SKB % \ + diff_msec(base_t, + event['comm_t']) + print PF_JOINT + +def trace_begin(): + global show_tx + global show_rx + global dev + global debug + + for i in range(len(sys.argv)): + if i == 0: + continue + arg = sys.argv[i] + if arg == 'tx': + show_tx = 1 + elif arg =='rx': + show_rx = 1 + elif arg.find('dev=',0, 4) >= 0: + dev = arg[4:] + elif arg == 'debug': + debug = 1 + if show_tx == 0 and show_rx == 0: + show_tx = 1 + show_rx = 1 + +def trace_end(): + # order all events in time + all_event_list.sort(lambda a,b :cmp(a[EINFO_IDX_TIME], + b[EINFO_IDX_TIME])) + # process all events + for i in range(len(all_event_list)): + event_info = all_event_list[i] + name = event_info[EINFO_IDX_NAME] + if name == 'irq__softirq_exit': + handle_irq_softirq_exit(event_info) + elif name == 'irq__softirq_entry': + handle_irq_softirq_entry(event_info) + elif name == 'irq__softirq_raise': + handle_irq_softirq_raise(event_info) + elif name == 'irq__irq_handler_entry': + handle_irq_handler_entry(event_info) + elif name == 'irq__irq_handler_exit': + handle_irq_handler_exit(event_info) + elif name == 'napi__napi_poll': + handle_napi_poll(event_info) + elif name == 'net__netif_receive_skb': + handle_netif_receive_skb(event_info) + elif name == 'net__netif_rx': + handle_netif_rx(event_info) + elif name == 'skb__skb_copy_datagram_iovec': + handle_skb_copy_datagram_iovec(event_info) + elif name == 'net__net_dev_queue': + handle_net_dev_queue(event_info) + elif name == 'net__net_dev_xmit': + handle_net_dev_xmit(event_info) + elif name == 'skb__kfree_skb': + handle_kfree_skb(event_info) + elif name == 'skb__consume_skb': + handle_consume_skb(event_info) + # display receive hunks + if show_rx: + for i in range(len(receive_hunk_list)): + print_receive(receive_hunk_list[i]) + # display transmit hunks + if show_tx: + print " dev len Qdisc " \ + " netdevice free" + for i in range(len(tx_free_list)): + print_transmit(tx_free_list[i]) + if debug: + print "debug buffer status" + print "----------------------------" + print "xmit Qdisc:remain:%d overflow:%d" % \ + (len(tx_queue_list), of_count_tx_queue_list) + print "xmit netdevice:remain:%d overflow:%d" % \ + (len(tx_xmit_list), of_count_tx_xmit_list) + print "receive:remain:%d overflow:%d" % \ + (len(rx_skb_list), of_count_rx_skb_list) + +# called from perf, when it finds a correspoinding event +def irq__softirq_entry(name, context, cpu, sec, nsec, pid, comm, vec): + if symbol_str("irq__softirq_entry", "vec", vec) != "NET_RX": + return + event_info = (name, context, cpu, nsecs(sec, nsec), pid, comm, vec) + all_event_list.append(event_info) + +def irq__softirq_exit(name, context, cpu, sec, nsec, pid, comm, vec): + if symbol_str("irq__softirq_entry", "vec", vec) != "NET_RX": + return + event_info = (name, context, cpu, nsecs(sec, nsec), pid, comm, vec) + all_event_list.append(event_info) + +def irq__softirq_raise(name, context, cpu, sec, nsec, pid, comm, vec): + if symbol_str("irq__softirq_entry", "vec", vec) != "NET_RX": + return + event_info = (name, context, cpu, nsecs(sec, nsec), pid, comm, vec) + all_event_list.append(event_info) + +def irq__irq_handler_entry(name, context, cpu, sec, nsec, pid, comm, + irq, irq_name): + event_info = (name, context, cpu, nsecs(sec, nsec), pid, comm, + irq, irq_name) + all_event_list.append(event_info) + +def irq__irq_handler_exit(name, context, cpu, sec, nsec, pid, comm, irq, ret): + event_info = (name, context, cpu, nsecs(sec, nsec), pid, comm, irq, ret) + all_event_list.append(event_info) + +def napi__napi_poll(name, context, cpu, sec, nsec, pid, comm, napi, dev_name): + event_info = (name, context, cpu, nsecs(sec, nsec), pid, comm, + napi, dev_name) + all_event_list.append(event_info) + +def net__netif_receive_skb(name, context, cpu, sec, nsec, pid, comm, skbaddr, + skblen, dev_name): + event_info = (name, context, cpu, nsecs(sec, nsec), pid, comm, + skbaddr, skblen, dev_name) + all_event_list.append(event_info) + +def net__netif_rx(name, context, cpu, sec, nsec, pid, comm, skbaddr, + skblen, dev_name): + event_info = (name, context, cpu, nsecs(sec, nsec), pid, comm, + skbaddr, skblen, dev_name) + all_event_list.append(event_info) + +def net__net_dev_queue(name, context, cpu, sec, nsec, pid, comm, + skbaddr, skblen, dev_name): + event_info = (name, context, cpu, nsecs(sec, nsec), pid, comm, + skbaddr, skblen, dev_name) + all_event_list.append(event_info) + +def net__net_dev_xmit(name, context, cpu, sec, nsec, pid, comm, + skbaddr, skblen, rc, dev_name): + event_info = (name, context, cpu, nsecs(sec, nsec), pid, comm, + skbaddr, skblen, rc ,dev_name) + all_event_list.append(event_info) + +def skb__kfree_skb(name, context, cpu, sec, nsec, pid, comm, + skbaddr, protocol, location): + event_info = (name, context, cpu, nsecs(sec, nsec), pid, comm, + skbaddr, protocol, location) + all_event_list.append(event_info) + +def skb__consume_skb(name, context, cpu, sec, nsec, pid, comm, skbaddr): + event_info = (name, context, cpu, nsecs(sec, nsec), pid, comm, + skbaddr) + all_event_list.append(event_info) + +def skb__skb_copy_datagram_iovec(name, context, cpu, sec, nsec, pid, comm, + skbaddr, skblen): + event_info = (name, context, cpu, nsecs(sec, nsec), pid, comm, + skbaddr, skblen) + all_event_list.append(event_info) + +def handle_irq_handler_entry(event_info): + (name, context, cpu, time, pid, comm, irq, irq_name) = event_info + if cpu not in irq_dic.keys(): + irq_dic[cpu] = [] + irq_record = {'irq':irq, 'name':irq_name, 'cpu':cpu, 'irq_ent_t':time} + irq_dic[cpu].append(irq_record) + +def handle_irq_handler_exit(event_info): + (name, context, cpu, time, pid, comm, irq, ret) = event_info + if cpu not in irq_dic.keys(): + return + irq_record = irq_dic[cpu].pop() + if irq != irq_record['irq']: + return + irq_record.update({'irq_ext_t':time}) + # if an irq doesn't include NET_RX softirq, drop. + if 'event_list' in irq_record.keys(): + irq_dic[cpu].append(irq_record) + +def handle_irq_softirq_raise(event_info): + (name, context, cpu, time, pid, comm, vec) = event_info + if cpu not in irq_dic.keys() \ + or len(irq_dic[cpu]) == 0: + return + irq_record = irq_dic[cpu].pop() + if 'event_list' in irq_record.keys(): + irq_event_list = irq_record['event_list'] + else: + irq_event_list = [] + irq_event_list.append({'time':time, 'event':'sirq_raise'}) + irq_record.update({'event_list':irq_event_list}) + irq_dic[cpu].append(irq_record) + +def handle_irq_softirq_entry(event_info): + (name, context, cpu, time, pid, comm, vec) = event_info + net_rx_dic[cpu] = {'sirq_ent_t':time, 'event_list':[]} + +def handle_irq_softirq_exit(event_info): + (name, context, cpu, time, pid, comm, vec) = event_info + irq_list = [] + event_list = 0 + if cpu in irq_dic.keys(): + irq_list = irq_dic[cpu] + del irq_dic[cpu] + if cpu in net_rx_dic.keys(): + sirq_ent_t = net_rx_dic[cpu]['sirq_ent_t'] + event_list = net_rx_dic[cpu]['event_list'] + del net_rx_dic[cpu] + if irq_list == [] or event_list == 0: + return + rec_data = {'sirq_ent_t':sirq_ent_t, 'sirq_ext_t':time, + 'irq_list':irq_list, 'event_list':event_list} + # merge information realted to a NET_RX softirq + receive_hunk_list.append(rec_data) + +def handle_napi_poll(event_info): + (name, context, cpu, time, pid, comm, napi, dev_name) = event_info + if cpu in net_rx_dic.keys(): + event_list = net_rx_dic[cpu]['event_list'] + rec_data = {'event_name':'napi_poll', + 'dev':dev_name, 'event_t':time} + event_list.append(rec_data) + +def handle_netif_rx(event_info): + (name, context, cpu, time, pid, comm, + skbaddr, skblen, dev_name) = event_info + if cpu not in irq_dic.keys() \ + or len(irq_dic[cpu]) == 0: + return + irq_record = irq_dic[cpu].pop() + if 'event_list' in irq_record.keys(): + irq_event_list = irq_record['event_list'] + else: + irq_event_list = [] + irq_event_list.append({'time':time, 'event':'netif_rx', + 'skbaddr':skbaddr, 'skblen':skblen, 'dev_name':dev_name}) + irq_record.update({'event_list':irq_event_list}) + irq_dic[cpu].append(irq_record) + +def handle_netif_receive_skb(event_info): + global of_count_rx_skb_list + + (name, context, cpu, time, pid, comm, + skbaddr, skblen, dev_name) = event_info + if cpu in net_rx_dic.keys(): + rec_data = {'event_name':'netif_receive_skb', + 'event_t':time, 'skbaddr':skbaddr, 'len':skblen} + event_list = net_rx_dic[cpu]['event_list'] + event_list.append(rec_data) + rx_skb_list.insert(0, rec_data) + if len(rx_skb_list) > buffer_budget: + rx_skb_list.pop() + of_count_rx_skb_list += 1 + +def handle_net_dev_queue(event_info): + global of_count_tx_queue_list + + (name, context, cpu, time, pid, comm, + skbaddr, skblen, dev_name) = event_info + skb = {'dev':dev_name, 'skbaddr':skbaddr, 'len':skblen, 'queue_t':time} + tx_queue_list.insert(0, skb) + if len(tx_queue_list) > buffer_budget: + tx_queue_list.pop() + of_count_tx_queue_list += 1 + +def handle_net_dev_xmit(event_info): + global of_count_tx_xmit_list + + (name, context, cpu, time, pid, comm, + skbaddr, skblen, rc, dev_name) = event_info + if rc == 0: # NETDEV_TX_OK + for i in range(len(tx_queue_list)): + skb = tx_queue_list[i] + if skb['skbaddr'] == skbaddr: + skb['xmit_t'] = time + tx_xmit_list.insert(0, skb) + del tx_queue_list[i] + if len(tx_xmit_list) > buffer_budget: + tx_xmit_list.pop() + of_count_tx_xmit_list += 1 + return + +def handle_kfree_skb(event_info): + (name, context, cpu, time, pid, comm, + skbaddr, protocol, location) = event_info + for i in range(len(tx_queue_list)): + skb = tx_queue_list[i] + if skb['skbaddr'] == skbaddr: + del tx_queue_list[i] + return + for i in range(len(tx_xmit_list)): + skb = tx_xmit_list[i] + if skb['skbaddr'] == skbaddr: + skb['free_t'] = time + tx_free_list.append(skb) + del tx_xmit_list[i] + return + for i in range(len(rx_skb_list)): + rec_data = rx_skb_list[i] + if rec_data['skbaddr'] == skbaddr: + rec_data.update({'handle':"kfree_skb", + 'comm':comm, 'pid':pid, 'comm_t':time}) + del rx_skb_list[i] + return + +def handle_consume_skb(event_info): + (name, context, cpu, time, pid, comm, skbaddr) = event_info + for i in range(len(tx_xmit_list)): + skb = tx_xmit_list[i] + if skb['skbaddr'] == skbaddr: + skb['free_t'] = time + tx_free_list.append(skb) + del tx_xmit_list[i] + return + +def handle_skb_copy_datagram_iovec(event_info): + (name, context, cpu, time, pid, comm, skbaddr, skblen) = event_info + for i in range(len(rx_skb_list)): + rec_data = rx_skb_list[i] + if skbaddr == rec_data['skbaddr']: + rec_data.update({'handle':"skb_copy_datagram_iovec", + 'comm':comm, 'pid':pid, 'comm_t':time}) + del rx_skb_list[i] + return diff --git a/tools/perf/util/cache.h b/tools/perf/util/cache.h index 27e9ebe4076e..a7729797fd96 100644 --- a/tools/perf/util/cache.h +++ b/tools/perf/util/cache.h @@ -82,6 +82,8 @@ extern char *perf_path(const char *fmt, ...) __attribute__((format (printf, 1, 2 extern char *perf_pathdup(const char *fmt, ...) __attribute__((format (printf, 1, 2))); +#ifdef NO_STRLCPY extern size_t strlcpy(char *dest, const char *src, size_t size); +#endif #endif /* __PERF_CACHE_H */ diff --git a/tools/perf/util/callchain.c b/tools/perf/util/callchain.c index f231f43424d2..e12d539417b2 100644 --- a/tools/perf/util/callchain.c +++ b/tools/perf/util/callchain.c @@ -28,6 +28,9 @@ bool ip_callchain__valid(struct ip_callchain *chain, const event_t *event) #define chain_for_each_child(child, parent) \ list_for_each_entry(child, &parent->children, brothers) +#define chain_for_each_child_safe(child, next, parent) \ + list_for_each_entry_safe(child, next, &parent->children, brothers) + static void rb_insert_callchain(struct rb_root *root, struct callchain_node *chain, enum chain_mode mode) @@ -86,10 +89,10 @@ __sort_chain_flat(struct rb_root *rb_root, struct callchain_node *node, * sort them by hit */ static void -sort_chain_flat(struct rb_root *rb_root, struct callchain_node *node, +sort_chain_flat(struct rb_root *rb_root, struct callchain_root *root, u64 min_hit, struct callchain_param *param __used) { - __sort_chain_flat(rb_root, node, min_hit); + __sort_chain_flat(rb_root, &root->node, min_hit); } static void __sort_chain_graph_abs(struct callchain_node *node, @@ -108,11 +111,11 @@ static void __sort_chain_graph_abs(struct callchain_node *node, } static void -sort_chain_graph_abs(struct rb_root *rb_root, struct callchain_node *chain_root, +sort_chain_graph_abs(struct rb_root *rb_root, struct callchain_root *chain_root, u64 min_hit, struct callchain_param *param __used) { - __sort_chain_graph_abs(chain_root, min_hit); - rb_root->rb_node = chain_root->rb_root.rb_node; + __sort_chain_graph_abs(&chain_root->node, min_hit); + rb_root->rb_node = chain_root->node.rb_root.rb_node; } static void __sort_chain_graph_rel(struct callchain_node *node, @@ -133,11 +136,11 @@ static void __sort_chain_graph_rel(struct callchain_node *node, } static void -sort_chain_graph_rel(struct rb_root *rb_root, struct callchain_node *chain_root, +sort_chain_graph_rel(struct rb_root *rb_root, struct callchain_root *chain_root, u64 min_hit __used, struct callchain_param *param) { - __sort_chain_graph_rel(chain_root, param->min_percent / 100.0); - rb_root->rb_node = chain_root->rb_root.rb_node; + __sort_chain_graph_rel(&chain_root->node, param->min_percent / 100.0); + rb_root->rb_node = chain_root->node.rb_root.rb_node; } int register_callchain_param(struct callchain_param *param) @@ -284,19 +287,18 @@ split_add_child(struct callchain_node *parent, struct resolved_chain *chain, } static int -__append_chain(struct callchain_node *root, struct resolved_chain *chain, - unsigned int start, u64 period); +append_chain(struct callchain_node *root, struct resolved_chain *chain, + unsigned int start, u64 period); static void -__append_chain_children(struct callchain_node *root, - struct resolved_chain *chain, - unsigned int start, u64 period) +append_chain_children(struct callchain_node *root, struct resolved_chain *chain, + unsigned int start, u64 period) { struct callchain_node *rnode; /* lookup in childrens */ chain_for_each_child(rnode, root) { - unsigned int ret = __append_chain(rnode, chain, start, period); + unsigned int ret = append_chain(rnode, chain, start, period); if (!ret) goto inc_children_hit; @@ -309,8 +311,8 @@ inc_children_hit: } static int -__append_chain(struct callchain_node *root, struct resolved_chain *chain, - unsigned int start, u64 period) +append_chain(struct callchain_node *root, struct resolved_chain *chain, + unsigned int start, u64 period) { struct callchain_list *cnode; unsigned int i = start; @@ -357,7 +359,7 @@ __append_chain(struct callchain_node *root, struct resolved_chain *chain, } /* We match the node and still have a part remaining */ - __append_chain_children(root, chain, i, period); + append_chain_children(root, chain, i, period); return 0; } @@ -380,8 +382,8 @@ static void filter_context(struct ip_callchain *old, struct resolved_chain *new, } -int append_chain(struct callchain_node *root, struct ip_callchain *chain, - struct map_symbol *syms, u64 period) +int callchain_append(struct callchain_root *root, struct ip_callchain *chain, + struct map_symbol *syms, u64 period) { struct resolved_chain *filtered; @@ -398,9 +400,65 @@ int append_chain(struct callchain_node *root, struct ip_callchain *chain, if (!filtered->nr) goto end; - __append_chain_children(root, filtered, 0, period); + append_chain_children(&root->node, filtered, 0, period); + + if (filtered->nr > root->max_depth) + root->max_depth = filtered->nr; end: free(filtered); return 0; } + +static int +merge_chain_branch(struct callchain_node *dst, struct callchain_node *src, + struct resolved_chain *chain) +{ + struct callchain_node *child, *next_child; + struct callchain_list *list, *next_list; + int old_pos = chain->nr; + int err = 0; + + list_for_each_entry_safe(list, next_list, &src->val, list) { + chain->ips[chain->nr].ip = list->ip; + chain->ips[chain->nr].ms = list->ms; + chain->nr++; + list_del(&list->list); + free(list); + } + + if (src->hit) + append_chain_children(dst, chain, 0, src->hit); + + chain_for_each_child_safe(child, next_child, src) { + err = merge_chain_branch(dst, child, chain); + if (err) + break; + + list_del(&child->brothers); + free(child); + } + + chain->nr = old_pos; + + return err; +} + +int callchain_merge(struct callchain_root *dst, struct callchain_root *src) +{ + struct resolved_chain *chain; + int err; + + chain = malloc(sizeof(*chain) + + src->max_depth * sizeof(struct resolved_ip)); + if (!chain) + return -ENOMEM; + + chain->nr = 0; + + err = merge_chain_branch(&dst->node, &src->node, chain); + + free(chain); + + return err; +} diff --git a/tools/perf/util/callchain.h b/tools/perf/util/callchain.h index 6de4313924fb..c15fb8c24ad2 100644 --- a/tools/perf/util/callchain.h +++ b/tools/perf/util/callchain.h @@ -26,9 +26,14 @@ struct callchain_node { u64 children_hit; }; +struct callchain_root { + u64 max_depth; + struct callchain_node node; +}; + struct callchain_param; -typedef void (*sort_chain_func_t)(struct rb_root *, struct callchain_node *, +typedef void (*sort_chain_func_t)(struct rb_root *, struct callchain_root *, u64, struct callchain_param *); struct callchain_param { @@ -44,15 +49,16 @@ struct callchain_list { struct list_head list; }; -static inline void callchain_init(struct callchain_node *node) +static inline void callchain_init(struct callchain_root *root) { - INIT_LIST_HEAD(&node->brothers); - INIT_LIST_HEAD(&node->children); - INIT_LIST_HEAD(&node->val); + INIT_LIST_HEAD(&root->node.brothers); + INIT_LIST_HEAD(&root->node.children); + INIT_LIST_HEAD(&root->node.val); - node->children_hit = 0; - node->parent = NULL; - node->hit = 0; + root->node.parent = NULL; + root->node.hit = 0; + root->node.children_hit = 0; + root->max_depth = 0; } static inline u64 cumul_hits(struct callchain_node *node) @@ -61,8 +67,9 @@ static inline u64 cumul_hits(struct callchain_node *node) } int register_callchain_param(struct callchain_param *param); -int append_chain(struct callchain_node *root, struct ip_callchain *chain, - struct map_symbol *syms, u64 period); +int callchain_append(struct callchain_root *root, struct ip_callchain *chain, + struct map_symbol *syms, u64 period); +int callchain_merge(struct callchain_root *dst, struct callchain_root *src); bool ip_callchain__valid(struct ip_callchain *chain, const event_t *event); #endif /* __PERF_CALLCHAIN_H */ diff --git a/tools/perf/util/hist.c b/tools/perf/util/hist.c index be22ae6ef055..2022e8740994 100644 --- a/tools/perf/util/hist.c +++ b/tools/perf/util/hist.c @@ -87,7 +87,7 @@ static void hist_entry__add_cpumode_period(struct hist_entry *self, static struct hist_entry *hist_entry__new(struct hist_entry *template) { - size_t callchain_size = symbol_conf.use_callchain ? sizeof(struct callchain_node) : 0; + size_t callchain_size = symbol_conf.use_callchain ? sizeof(struct callchain_root) : 0; struct hist_entry *self = malloc(sizeof(*self) + callchain_size); if (self != NULL) { @@ -226,6 +226,8 @@ static bool collapse__insert_entry(struct rb_root *root, struct hist_entry *he) if (!cmp) { iter->period += he->period; + if (symbol_conf.use_callchain) + callchain_merge(iter->callchain, he->callchain); hist_entry__free(he); return false; } diff --git a/tools/perf/util/path.c b/tools/perf/util/path.c index 58a470d036dd..bd7497711424 100644 --- a/tools/perf/util/path.c +++ b/tools/perf/util/path.c @@ -22,6 +22,7 @@ static const char *get_perf_dir(void) return "."; } +#ifdef NO_STRLCPY size_t strlcpy(char *dest, const char *src, size_t size) { size_t ret = strlen(src); @@ -33,7 +34,7 @@ size_t strlcpy(char *dest, const char *src, size_t size) } return ret; } - +#endif static char *get_pathname(void) { diff --git a/tools/perf/util/sort.h b/tools/perf/util/sort.h index 46e531d09e8b..0b91053a7d11 100644 --- a/tools/perf/util/sort.h +++ b/tools/perf/util/sort.h @@ -70,7 +70,7 @@ struct hist_entry { struct hist_entry *pair; struct rb_root sorted_chain; }; - struct callchain_node callchain[0]; + struct callchain_root callchain[0]; }; enum sort_type { diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c index b2f5ae97f33d..b39f499e575a 100644 --- a/tools/perf/util/symbol.c +++ b/tools/perf/util/symbol.c @@ -388,6 +388,20 @@ size_t dso__fprintf_buildid(struct dso *self, FILE *fp) return fprintf(fp, "%s", sbuild_id); } +size_t dso__fprintf_symbols_by_name(struct dso *self, enum map_type type, FILE *fp) +{ + size_t ret = 0; + struct rb_node *nd; + struct symbol_name_rb_node *pos; + + for (nd = rb_first(&self->symbol_names[type]); nd; nd = rb_next(nd)) { + pos = rb_entry(nd, struct symbol_name_rb_node, rb_node); + fprintf(fp, "%s\n", pos->sym.name); + } + + return ret; +} + size_t dso__fprintf(struct dso *self, enum map_type type, FILE *fp) { struct rb_node *nd; diff --git a/tools/perf/util/symbol.h b/tools/perf/util/symbol.h index ea95c2756f05..038f2201ee09 100644 --- a/tools/perf/util/symbol.h +++ b/tools/perf/util/symbol.h @@ -182,6 +182,7 @@ size_t machines__fprintf_dsos(struct rb_root *self, FILE *fp); size_t machines__fprintf_dsos_buildid(struct rb_root *self, FILE *fp, bool with_hits); size_t dso__fprintf_buildid(struct dso *self, FILE *fp); +size_t dso__fprintf_symbols_by_name(struct dso *self, enum map_type type, FILE *fp); size_t dso__fprintf(struct dso *self, enum map_type type, FILE *fp); enum dso_origin { diff --git a/tools/perf/util/ui/browser.c b/tools/perf/util/ui/browser.c index 66f2d583d8c4..6d0df809a2ed 100644 --- a/tools/perf/util/ui/browser.c +++ b/tools/perf/util/ui/browser.c @@ -1,16 +1,6 @@ -#define _GNU_SOURCE -#include <stdio.h> -#undef _GNU_SOURCE -/* - * slang versions <= 2.0.6 have a "#if HAVE_LONG_LONG" that breaks - * the build if it isn't defined. Use the equivalent one that glibc - * has on features.h. - */ -#include <features.h> -#ifndef HAVE_LONG_LONG -#define HAVE_LONG_LONG __GLIBC_HAVE_LONG_LONG -#endif #include <slang.h> +#include "libslang.h" +#include <linux/compiler.h> #include <linux/list.h> #include <linux/rbtree.h> #include <stdlib.h> @@ -19,17 +9,9 @@ #include "helpline.h" #include "../color.h" #include "../util.h" +#include <stdio.h> -#if SLANG_VERSION < 20104 -#define sltt_set_color(obj, name, fg, bg) \ - SLtt_set_color(obj,(char *)name, (char *)fg, (char *)bg) -#else -#define sltt_set_color SLtt_set_color -#endif - -newtComponent newt_form__new(void); - -int ui_browser__percent_color(double percent, bool current) +static int ui_browser__percent_color(double percent, bool current) { if (current) return HE_COLORSET_SELECTED; @@ -40,6 +22,23 @@ int ui_browser__percent_color(double percent, bool current) return HE_COLORSET_NORMAL; } +void ui_browser__set_color(struct ui_browser *self __used, int color) +{ + SLsmg_set_color(color); +} + +void ui_browser__set_percent_color(struct ui_browser *self, + double percent, bool current) +{ + int color = ui_browser__percent_color(percent, current); + ui_browser__set_color(self, color); +} + +void ui_browser__gotorc(struct ui_browser *self, int y, int x) +{ + SLsmg_gotorc(self->y + y, self->x + x); +} + void ui_browser__list_head_seek(struct ui_browser *self, off_t offset, int whence) { struct list_head *head = self->entries; @@ -111,7 +110,7 @@ unsigned int ui_browser__rb_tree_refresh(struct ui_browser *self) nd = self->top; while (nd != NULL) { - SLsmg_gotorc(self->y + row, self->x); + ui_browser__gotorc(self, row, 0); self->write(self, nd, row); if (++row == self->height) break; @@ -131,13 +130,10 @@ void ui_browser__refresh_dimensions(struct ui_browser *self) int cols, rows; newtGetScreenSize(&cols, &rows); - if (self->width > cols - 4) - self->width = cols - 4; - self->height = rows - 5; - if (self->height > self->nr_entries) - self->height = self->nr_entries; - self->y = (rows - self->height) / 2; - self->x = (cols - self->width) / 2; + self->width = cols - 1; + self->height = rows - 2; + self->y = 1; + self->x = 0; } void ui_browser__reset_index(struct ui_browser *self) @@ -146,34 +142,48 @@ void ui_browser__reset_index(struct ui_browser *self) self->seek(self, 0, SEEK_SET); } +void ui_browser__add_exit_key(struct ui_browser *self, int key) +{ + newtFormAddHotKey(self->form, key); +} + +void ui_browser__add_exit_keys(struct ui_browser *self, int keys[]) +{ + int i = 0; + + while (keys[i] && i < 64) { + ui_browser__add_exit_key(self, keys[i]); + ++i; + } +} + int ui_browser__show(struct ui_browser *self, const char *title, const char *helpline, ...) { va_list ap; + int keys[] = { NEWT_KEY_UP, NEWT_KEY_DOWN, NEWT_KEY_PGUP, + NEWT_KEY_PGDN, NEWT_KEY_HOME, NEWT_KEY_END, ' ', + NEWT_KEY_LEFT, NEWT_KEY_ESCAPE, 'q', CTRL('c'), 0 }; - if (self->form != NULL) { + if (self->form != NULL) newtFormDestroy(self->form); - newtPopWindow(); - } + ui_browser__refresh_dimensions(self); - newtCenteredWindow(self->width, self->height, title); - self->form = newt_form__new(); + self->form = newtForm(NULL, NULL, 0); if (self->form == NULL) return -1; - self->sb = newtVerticalScrollbar(self->width, 0, self->height, + self->sb = newtVerticalScrollbar(self->width, 1, self->height, HE_COLORSET_NORMAL, HE_COLORSET_SELECTED); if (self->sb == NULL) return -1; - newtFormAddHotKey(self->form, NEWT_KEY_UP); - newtFormAddHotKey(self->form, NEWT_KEY_DOWN); - newtFormAddHotKey(self->form, NEWT_KEY_PGUP); - newtFormAddHotKey(self->form, NEWT_KEY_PGDN); - newtFormAddHotKey(self->form, NEWT_KEY_HOME); - newtFormAddHotKey(self->form, NEWT_KEY_END); - newtFormAddHotKey(self->form, ' '); + SLsmg_gotorc(0, 0); + ui_browser__set_color(self, NEWT_COLORSET_ROOT); + slsmg_write_nstring(title, self->width); + + ui_browser__add_exit_keys(self, keys); newtFormAddComponent(self->form, self->sb); va_start(ap, helpline); @@ -185,7 +195,6 @@ int ui_browser__show(struct ui_browser *self, const char *title, void ui_browser__hide(struct ui_browser *self) { newtFormDestroy(self->form); - newtPopWindow(); self->form = NULL; ui_helpline__pop(); } @@ -196,28 +205,28 @@ int ui_browser__refresh(struct ui_browser *self) newtScrollbarSet(self->sb, self->index, self->nr_entries - 1); row = self->refresh(self); - SLsmg_set_color(HE_COLORSET_NORMAL); + ui_browser__set_color(self, HE_COLORSET_NORMAL); SLsmg_fill_region(self->y + row, self->x, self->height - row, self->width, ' '); return 0; } -int ui_browser__run(struct ui_browser *self, struct newtExitStruct *es) +int ui_browser__run(struct ui_browser *self) { + struct newtExitStruct es; + if (ui_browser__refresh(self) < 0) return -1; while (1) { off_t offset; - newtFormRun(self->form, es); + newtFormRun(self->form, &es); - if (es->reason != NEWT_EXIT_HOTKEY) + if (es.reason != NEWT_EXIT_HOTKEY) break; - if (is_exit_key(es->u.key)) - return es->u.key; - switch (es->u.key) { + switch (es.u.key) { case NEWT_KEY_DOWN: if (self->index == self->nr_entries - 1) break; @@ -274,12 +283,12 @@ int ui_browser__run(struct ui_browser *self, struct newtExitStruct *es) self->seek(self, -offset, SEEK_END); break; default: - return es->u.key; + return es.u.key; } if (ui_browser__refresh(self) < 0) return -1; } - return 0; + return -1; } unsigned int ui_browser__list_head_refresh(struct ui_browser *self) @@ -294,7 +303,7 @@ unsigned int ui_browser__list_head_refresh(struct ui_browser *self) pos = self->top; list_for_each_from(pos, head) { - SLsmg_gotorc(self->y + row, self->x); + ui_browser__gotorc(self, row, 0); self->write(self, pos, row); if (++row == self->height) break; diff --git a/tools/perf/util/ui/browser.h b/tools/perf/util/ui/browser.h index 0b9f829214f7..0dc7e4da36f5 100644 --- a/tools/perf/util/ui/browser.h +++ b/tools/perf/util/ui/browser.h @@ -25,16 +25,21 @@ struct ui_browser { }; -int ui_browser__percent_color(double percent, bool current); +void ui_browser__set_color(struct ui_browser *self, int color); +void ui_browser__set_percent_color(struct ui_browser *self, + double percent, bool current); bool ui_browser__is_current_entry(struct ui_browser *self, unsigned row); void ui_browser__refresh_dimensions(struct ui_browser *self); void ui_browser__reset_index(struct ui_browser *self); +void ui_browser__gotorc(struct ui_browser *self, int y, int x); +void ui_browser__add_exit_key(struct ui_browser *self, int key); +void ui_browser__add_exit_keys(struct ui_browser *self, int keys[]); int ui_browser__show(struct ui_browser *self, const char *title, const char *helpline, ...); void ui_browser__hide(struct ui_browser *self); int ui_browser__refresh(struct ui_browser *self); -int ui_browser__run(struct ui_browser *self, struct newtExitStruct *es); +int ui_browser__run(struct ui_browser *self); void ui_browser__rb_tree_seek(struct ui_browser *self, off_t offset, int whence); unsigned int ui_browser__rb_tree_refresh(struct ui_browser *self); diff --git a/tools/perf/util/ui/browsers/annotate.c b/tools/perf/util/ui/browsers/annotate.c index a90273e63f4f..82b78f99251b 100644 --- a/tools/perf/util/ui/browsers/annotate.c +++ b/tools/perf/util/ui/browsers/annotate.c @@ -40,14 +40,12 @@ static void annotate_browser__write(struct ui_browser *self, void *entry, int ro if (ol->offset != -1) { struct objdump_line_rb_node *olrb = objdump_line__rb(ol); - int color = ui_browser__percent_color(olrb->percent, current_entry); - SLsmg_set_color(color); + ui_browser__set_percent_color(self, olrb->percent, current_entry); slsmg_printf(" %7.2f ", olrb->percent); if (!current_entry) - SLsmg_set_color(HE_COLORSET_CODE); + ui_browser__set_color(self, HE_COLORSET_CODE); } else { - int color = ui_browser__percent_color(0, current_entry); - SLsmg_set_color(color); + ui_browser__set_percent_color(self, 0, current_entry); slsmg_write_nstring(" ", 9); } @@ -135,32 +133,31 @@ static void annotate_browser__set_top(struct annotate_browser *self, self->curr_hot = nd; } -static int annotate_browser__run(struct annotate_browser *self, - struct newtExitStruct *es) +static int annotate_browser__run(struct annotate_browser *self) { struct rb_node *nd; struct hist_entry *he = self->b.priv; + int key; if (ui_browser__show(&self->b, he->ms.sym->name, - "<- or ESC: exit, TAB/shift+TAB: cycle thru samples") < 0) + "<-, -> or ESC: exit, TAB/shift+TAB: cycle thru samples") < 0) return -1; - - newtFormAddHotKey(self->b.form, NEWT_KEY_LEFT); - newtFormAddHotKey(self->b.form, NEWT_KEY_RIGHT); + /* + * To allow builtin-annotate to cycle thru multiple symbols by + * examining the exit key for this function. + */ + ui_browser__add_exit_key(&self->b, NEWT_KEY_RIGHT); nd = self->curr_hot; if (nd) { - newtFormAddHotKey(self->b.form, NEWT_KEY_TAB); - newtFormAddHotKey(self->b.form, NEWT_KEY_UNTAB); + int tabs[] = { NEWT_KEY_TAB, NEWT_KEY_UNTAB, 0 }; + ui_browser__add_exit_keys(&self->b, tabs); } while (1) { - ui_browser__run(&self->b, es); - - if (es->reason != NEWT_EXIT_HOTKEY) - break; + key = ui_browser__run(&self->b); - switch (es->u.key) { + switch (key) { case NEWT_KEY_TAB: nd = rb_prev(nd); if (nd == NULL) @@ -179,12 +176,11 @@ static int annotate_browser__run(struct annotate_browser *self, } out: ui_browser__hide(&self->b); - return es->u.key; + return key; } int hist_entry__tui_annotate(struct hist_entry *self) { - struct newtExitStruct es; struct objdump_line *pos, *n; struct objdump_line_rb_node *rbpos; LIST_HEAD(head); @@ -232,7 +228,7 @@ int hist_entry__tui_annotate(struct hist_entry *self) annotate_browser__set_top(&browser, browser.curr_hot); browser.b.width += 18; /* Percentage */ - ret = annotate_browser__run(&browser, &es); + ret = annotate_browser__run(&browser); list_for_each_entry_safe(pos, n, &head, node) { list_del(&pos->node); objdump_line__free(pos); diff --git a/tools/perf/util/ui/browsers/hists.c b/tools/perf/util/ui/browsers/hists.c index 6866aa4c41e0..ebda8c3fde9e 100644 --- a/tools/perf/util/ui/browsers/hists.c +++ b/tools/perf/util/ui/browsers/hists.c @@ -58,6 +58,11 @@ static char callchain_list__folded(const struct callchain_list *self) return map_symbol__folded(&self->ms); } +static void map_symbol__set_folding(struct map_symbol *self, bool unfold) +{ + self->unfolded = unfold ? self->has_children : false; +} + static int callchain_node__count_rows_rb_tree(struct callchain_node *self) { int n = 0; @@ -129,16 +134,16 @@ static void callchain_node__init_have_children_rb_tree(struct callchain_node *se for (nd = rb_first(&self->rb_root); nd; nd = rb_next(nd)) { struct callchain_node *child = rb_entry(nd, struct callchain_node, rb_node); struct callchain_list *chain; - int first = true; + bool first = true; list_for_each_entry(chain, &child->val, list) { if (first) { first = false; chain->ms.has_children = chain->list.next != &child->val || - rb_first(&child->rb_root) != NULL; + !RB_EMPTY_ROOT(&child->rb_root); } else chain->ms.has_children = chain->list.next == &child->val && - rb_first(&child->rb_root) != NULL; + !RB_EMPTY_ROOT(&child->rb_root); } callchain_node__init_have_children_rb_tree(child); @@ -150,7 +155,7 @@ static void callchain_node__init_have_children(struct callchain_node *self) struct callchain_list *chain; list_for_each_entry(chain, &self->val, list) - chain->ms.has_children = rb_first(&self->rb_root) != NULL; + chain->ms.has_children = !RB_EMPTY_ROOT(&self->rb_root); callchain_node__init_have_children_rb_tree(self); } @@ -168,6 +173,7 @@ static void callchain__init_have_children(struct rb_root *self) static void hist_entry__init_have_children(struct hist_entry *self) { if (!self->init_have_children) { + self->ms.has_children = !RB_EMPTY_ROOT(&self->sorted_chain); callchain__init_have_children(&self->sorted_chain); self->init_have_children = true; } @@ -195,43 +201,114 @@ static bool hist_browser__toggle_fold(struct hist_browser *self) return false; } -static int hist_browser__run(struct hist_browser *self, const char *title, - struct newtExitStruct *es) +static int callchain_node__set_folding_rb_tree(struct callchain_node *self, bool unfold) +{ + int n = 0; + struct rb_node *nd; + + for (nd = rb_first(&self->rb_root); nd; nd = rb_next(nd)) { + struct callchain_node *child = rb_entry(nd, struct callchain_node, rb_node); + struct callchain_list *chain; + bool has_children = false; + + list_for_each_entry(chain, &child->val, list) { + ++n; + map_symbol__set_folding(&chain->ms, unfold); + has_children = chain->ms.has_children; + } + + if (has_children) + n += callchain_node__set_folding_rb_tree(child, unfold); + } + + return n; +} + +static int callchain_node__set_folding(struct callchain_node *node, bool unfold) +{ + struct callchain_list *chain; + bool has_children = false; + int n = 0; + + list_for_each_entry(chain, &node->val, list) { + ++n; + map_symbol__set_folding(&chain->ms, unfold); + has_children = chain->ms.has_children; + } + + if (has_children) + n += callchain_node__set_folding_rb_tree(node, unfold); + + return n; +} + +static int callchain__set_folding(struct rb_root *chain, bool unfold) +{ + struct rb_node *nd; + int n = 0; + + for (nd = rb_first(chain); nd; nd = rb_next(nd)) { + struct callchain_node *node = rb_entry(nd, struct callchain_node, rb_node); + n += callchain_node__set_folding(node, unfold); + } + + return n; +} + +static void hist_entry__set_folding(struct hist_entry *self, bool unfold) +{ + hist_entry__init_have_children(self); + map_symbol__set_folding(&self->ms, unfold); + + if (self->ms.has_children) { + int n = callchain__set_folding(&self->sorted_chain, unfold); + self->nr_rows = unfold ? n : 0; + } else + self->nr_rows = 0; +} + +static void hists__set_folding(struct hists *self, bool unfold) +{ + struct rb_node *nd; + + self->nr_entries = 0; + + for (nd = rb_first(&self->entries); nd; nd = rb_next(nd)) { + struct hist_entry *he = rb_entry(nd, struct hist_entry, rb_node); + hist_entry__set_folding(he, unfold); + self->nr_entries += 1 + he->nr_rows; + } +} + +static void hist_browser__set_folding(struct hist_browser *self, bool unfold) +{ + hists__set_folding(self->hists, unfold); + self->b.nr_entries = self->hists->nr_entries; + /* Go to the start, we may be way after valid entries after a collapse */ + ui_browser__reset_index(&self->b); +} + +static int hist_browser__run(struct hist_browser *self, const char *title) { - char str[256], unit; - unsigned long nr_events = self->hists->stats.nr_events[PERF_RECORD_SAMPLE]; + int key; + int exit_keys[] = { 'a', '?', 'h', 'C', 'd', 'D', 'E', 't', + NEWT_KEY_ENTER, NEWT_KEY_RIGHT, NEWT_KEY_LEFT, 0, }; self->b.entries = &self->hists->entries; self->b.nr_entries = self->hists->nr_entries; hist_browser__refresh_dimensions(self); - nr_events = convert_unit(nr_events, &unit); - snprintf(str, sizeof(str), "Events: %lu%c ", - nr_events, unit); - newtDrawRootText(0, 0, str); - if (ui_browser__show(&self->b, title, "Press '?' for help on key bindings") < 0) return -1; - newtFormAddHotKey(self->b.form, 'a'); - newtFormAddHotKey(self->b.form, '?'); - newtFormAddHotKey(self->b.form, 'h'); - newtFormAddHotKey(self->b.form, 'd'); - newtFormAddHotKey(self->b.form, 'D'); - newtFormAddHotKey(self->b.form, 't'); - - newtFormAddHotKey(self->b.form, NEWT_KEY_LEFT); - newtFormAddHotKey(self->b.form, NEWT_KEY_RIGHT); - newtFormAddHotKey(self->b.form, NEWT_KEY_ENTER); + ui_browser__add_exit_keys(&self->b, exit_keys); while (1) { - ui_browser__run(&self->b, es); + key = ui_browser__run(&self->b); - if (es->reason != NEWT_EXIT_HOTKEY) - break; - switch (es->u.key) { + switch (key) { case 'D': { /* Debug */ static int seq; struct hist_entry *h = rb_entry(self->b.top, @@ -245,18 +322,26 @@ static int hist_browser__run(struct hist_browser *self, const char *title, self->b.top_idx, h->row_offset, h->nr_rows); } - continue; + break; + case 'C': + /* Collapse the whole world. */ + hist_browser__set_folding(self, false); + break; + case 'E': + /* Expand the whole world. */ + hist_browser__set_folding(self, true); + break; case NEWT_KEY_ENTER: if (hist_browser__toggle_fold(self)) break; /* fall thru */ default: - return 0; + goto out; } } - +out: ui_browser__hide(&self->b); - return 0; + return key; } static char *callchain_list__sym_name(struct callchain_list *self, @@ -306,15 +391,10 @@ static int hist_browser__show_callchain_node_rb_tree(struct hist_browser *self, int color; bool was_first = first; - if (first) { + if (first) first = false; - chain->ms.has_children = chain->list.next != &child->val || - rb_first(&child->rb_root) != NULL; - } else { + else extra_offset = LEVEL_OFFSET_STEP; - chain->ms.has_children = chain->list.next == &child->val && - rb_first(&child->rb_root) != NULL; - } folded_sign = callchain_list__folded(chain); if (*row_offset != 0) { @@ -341,8 +421,8 @@ static int hist_browser__show_callchain_node_rb_tree(struct hist_browser *self, *is_current_entry = true; } - SLsmg_set_color(color); - SLsmg_gotorc(self->b.y + row, self->b.x); + ui_browser__set_color(&self->b, color); + ui_browser__gotorc(&self->b, row, 0); slsmg_write_nstring(" ", offset + extra_offset); slsmg_printf("%c ", folded_sign); slsmg_write_nstring(str, width); @@ -384,12 +464,7 @@ static int hist_browser__show_callchain_node(struct hist_browser *self, list_for_each_entry(chain, &node->val, list) { char ipstr[BITS_PER_LONG / 4 + 1], *s; int color; - /* - * FIXME: This should be moved to somewhere else, - * probably when the callchain is created, so as not to - * traverse it all over again - */ - chain->ms.has_children = rb_first(&node->rb_root) != NULL; + folded_sign = callchain_list__folded(chain); if (*row_offset != 0) { @@ -405,8 +480,8 @@ static int hist_browser__show_callchain_node(struct hist_browser *self, } s = callchain_list__sym_name(chain, ipstr, sizeof(ipstr)); - SLsmg_gotorc(self->b.y + row, self->b.x); - SLsmg_set_color(color); + ui_browser__gotorc(&self->b, row, 0); + ui_browser__set_color(&self->b, color); slsmg_write_nstring(" ", offset); slsmg_printf("%c ", folded_sign); slsmg_write_nstring(s, width - 2); @@ -465,7 +540,7 @@ static int hist_browser__show_entry(struct hist_browser *self, } if (symbol_conf.use_callchain) { - entry->ms.has_children = !RB_EMPTY_ROOT(&entry->sorted_chain); + hist_entry__init_have_children(entry); folded_sign = hist_entry__folded(entry); } @@ -484,8 +559,8 @@ static int hist_browser__show_entry(struct hist_browser *self, color = HE_COLORSET_NORMAL; } - SLsmg_set_color(color); - SLsmg_gotorc(self->b.y + row, self->b.x); + ui_browser__set_color(&self->b, color); + ui_browser__gotorc(&self->b, row, 0); if (symbol_conf.use_callchain) { slsmg_printf("%c ", folded_sign); width -= 2; @@ -687,8 +762,6 @@ static struct hist_browser *hist_browser__new(struct hists *hists) static void hist_browser__delete(struct hist_browser *self) { - newtFormDestroy(self->b.form); - newtPopWindow(); free(self); } @@ -702,21 +775,26 @@ static struct thread *hist_browser__selected_thread(struct hist_browser *self) return self->he_selection->thread; } -static int hist_browser__title(char *bf, size_t size, const char *ev_name, - const struct dso *dso, const struct thread *thread) +static int hists__browser_title(struct hists *self, char *bf, size_t size, + const char *ev_name, const struct dso *dso, + const struct thread *thread) { - int printed = 0; + char unit; + int printed; + unsigned long nr_events = self->stats.nr_events[PERF_RECORD_SAMPLE]; + + nr_events = convert_unit(nr_events, &unit); + printed = snprintf(bf, size, "Events: %lu%c %s", nr_events, unit, ev_name); if (thread) printed += snprintf(bf + printed, size - printed, - "Thread: %s(%d)", - (thread->comm_set ? thread->comm : ""), + ", Thread: %s(%d)", + (thread->comm_set ? thread->comm : ""), thread->pid); if (dso) printed += snprintf(bf + printed, size - printed, - "%sDSO: %s", thread ? " " : "", - dso->short_name); - return printed ?: snprintf(bf, size, "Event: %s", ev_name); + ", DSO: %s", dso->short_name); + return printed; } int hists__browse(struct hists *self, const char *helpline, const char *ev_name) @@ -725,7 +803,6 @@ int hists__browse(struct hists *self, const char *helpline, const char *ev_name) struct pstack *fstack; const struct thread *thread_filter = NULL; const struct dso *dso_filter = NULL; - struct newtExitStruct es; char msg[160]; int key = -1; @@ -738,9 +815,8 @@ int hists__browse(struct hists *self, const char *helpline, const char *ev_name) ui_helpline__push(helpline); - hist_browser__title(msg, sizeof(msg), ev_name, - dso_filter, thread_filter); - + hists__browser_title(self, msg, sizeof(msg), ev_name, + dso_filter, thread_filter); while (1) { const struct thread *thread; const struct dso *dso; @@ -749,70 +825,63 @@ int hists__browse(struct hists *self, const char *helpline, const char *ev_name) annotate = -2, zoom_dso = -2, zoom_thread = -2, browse_map = -2; - if (hist_browser__run(browser, msg, &es)) - break; + key = hist_browser__run(browser, msg); thread = hist_browser__selected_thread(browser); dso = browser->selection->map ? browser->selection->map->dso : NULL; - if (es.reason == NEWT_EXIT_HOTKEY) { - key = es.u.key; - - switch (key) { - case NEWT_KEY_F1: - goto do_help; - case NEWT_KEY_TAB: - case NEWT_KEY_UNTAB: - /* - * Exit the browser, let hists__browser_tree - * go to the next or previous - */ - goto out_free_stack; - default:; - } - - switch (key) { - case 'a': - if (browser->selection->map == NULL || - browser->selection->map->dso->annotate_warned) - continue; - goto do_annotate; - case 'd': - goto zoom_dso; - case 't': - goto zoom_thread; - case 'h': - case '?': -do_help: - ui__help_window("-> Zoom into DSO/Threads & Annotate current symbol\n" - "<- Zoom out\n" - "a Annotate current symbol\n" - "h/?/F1 Show this window\n" - "d Zoom into current DSO\n" - "t Zoom into current Thread\n" - "q/CTRL+C Exit browser"); + switch (key) { + case NEWT_KEY_TAB: + case NEWT_KEY_UNTAB: + /* + * Exit the browser, let hists__browser_tree + * go to the next or previous + */ + goto out_free_stack; + case 'a': + if (browser->selection->map == NULL && + browser->selection->map->dso->annotate_warned) continue; - default:; - } - if (is_exit_key(key)) { - if (key == NEWT_KEY_ESCAPE && - !ui__dialog_yesno("Do you really want to exit?")) - continue; - break; - } - - if (es.u.key == NEWT_KEY_LEFT) { - const void *top; + goto do_annotate; + case 'd': + goto zoom_dso; + case 't': + goto zoom_thread; + case NEWT_KEY_F1: + case 'h': + case '?': + ui__help_window("-> Zoom into DSO/Threads & Annotate current symbol\n" + "<- Zoom out\n" + "a Annotate current symbol\n" + "h/?/F1 Show this window\n" + "C Collapse all callchains\n" + "E Expand all callchains\n" + "d Zoom into current DSO\n" + "t Zoom into current Thread\n" + "q/CTRL+C Exit browser"); + continue; + case NEWT_KEY_ENTER: + case NEWT_KEY_RIGHT: + /* menu */ + break; + case NEWT_KEY_LEFT: { + const void *top; - if (pstack__empty(fstack)) - continue; - top = pstack__pop(fstack); - if (top == &dso_filter) - goto zoom_out_dso; - if (top == &thread_filter) - goto zoom_out_thread; + if (pstack__empty(fstack)) continue; - } + top = pstack__pop(fstack); + if (top == &dso_filter) + goto zoom_out_dso; + if (top == &thread_filter) + goto zoom_out_thread; + continue; + } + case NEWT_KEY_ESCAPE: + if (!ui__dialog_yesno("Do you really want to exit?")) + continue; + /* Fall thru */ + default: + goto out_free_stack; } if (browser->selection->sym != NULL && @@ -885,8 +954,8 @@ zoom_out_dso: pstack__push(fstack, &dso_filter); } hists__filter_by_dso(self, dso_filter); - hist_browser__title(msg, sizeof(msg), ev_name, - dso_filter, thread_filter); + hists__browser_title(self, msg, sizeof(msg), ev_name, + dso_filter, thread_filter); hist_browser__reset(browser); } else if (choice == zoom_thread) { zoom_thread: @@ -903,8 +972,8 @@ zoom_out_thread: pstack__push(fstack, &thread_filter); } hists__filter_by_thread(self, thread_filter); - hist_browser__title(msg, sizeof(msg), ev_name, - dso_filter, thread_filter); + hists__browser_title(self, msg, sizeof(msg), ev_name, + dso_filter, thread_filter); hist_browser__reset(browser); } } @@ -925,10 +994,6 @@ int hists__tui_browse_tree(struct rb_root *self, const char *help) const char *ev_name = __event_name(hists->type, hists->config); key = hists__browse(hists, help, ev_name); - - if (is_exit_key(key)) - break; - switch (key) { case NEWT_KEY_TAB: next = rb_next(nd); @@ -940,7 +1005,7 @@ int hists__tui_browse_tree(struct rb_root *self, const char *help) continue; nd = rb_prev(nd); default: - break; + return key; } } diff --git a/tools/perf/util/ui/browsers/map.c b/tools/perf/util/ui/browsers/map.c index 142b825b42bf..e35437dfa5b4 100644 --- a/tools/perf/util/ui/browsers/map.c +++ b/tools/perf/util/ui/browsers/map.c @@ -1,6 +1,5 @@ #include "../libslang.h" #include <elf.h> -#include <newt.h> #include <sys/ttydefaults.h> #include <ctype.h> #include <string.h> @@ -47,7 +46,6 @@ out_free_form: struct map_browser { struct ui_browser b; struct map *map; - u16 namelen; u8 addrlen; }; @@ -56,14 +54,16 @@ static void map_browser__write(struct ui_browser *self, void *nd, int row) struct symbol *sym = rb_entry(nd, struct symbol, rb_node); struct map_browser *mb = container_of(self, struct map_browser, b); bool current_entry = ui_browser__is_current_entry(self, row); - int color = ui_browser__percent_color(0, current_entry); + int width; - SLsmg_set_color(color); + ui_browser__set_percent_color(self, 0, current_entry); slsmg_printf("%*llx %*llx %c ", mb->addrlen, sym->start, mb->addrlen, sym->end, sym->binding == STB_GLOBAL ? 'g' : sym->binding == STB_LOCAL ? 'l' : 'w'); - slsmg_write_nstring(sym->name, mb->namelen); + width = self->width - ((mb->addrlen * 2) + 4); + if (width > 0) + slsmg_write_nstring(sym->name, width); } /* FIXME uber-kludgy, see comment on cmd_report... */ @@ -98,31 +98,29 @@ static int map_browser__search(struct map_browser *self) return 0; } -static int map_browser__run(struct map_browser *self, struct newtExitStruct *es) +static int map_browser__run(struct map_browser *self) { + int key; + if (ui_browser__show(&self->b, self->map->dso->long_name, "Press <- or ESC to exit, %s / to search", verbose ? "" : "restart with -v to use") < 0) return -1; - newtFormAddHotKey(self->b.form, NEWT_KEY_LEFT); - newtFormAddHotKey(self->b.form, NEWT_KEY_ENTER); if (verbose) - newtFormAddHotKey(self->b.form, '/'); + ui_browser__add_exit_key(&self->b, '/'); while (1) { - ui_browser__run(&self->b, es); + key = ui_browser__run(&self->b); - if (es->reason != NEWT_EXIT_HOTKEY) - break; - if (verbose && es->u.key == '/') + if (verbose && key == '/') map_browser__search(self); else break; } ui_browser__hide(&self->b); - return 0; + return key; } int map__browse(struct map *self) @@ -136,7 +134,6 @@ int map__browse(struct map *self) }, .map = self, }; - struct newtExitStruct es; struct rb_node *nd; char tmp[BITS_PER_LONG / 4]; u64 maxaddr = 0; @@ -144,8 +141,6 @@ int map__browse(struct map *self) for (nd = rb_first(mb.b.entries); nd; nd = rb_next(nd)) { struct symbol *pos = rb_entry(nd, struct symbol, rb_node); - if (mb.namelen < pos->namelen) - mb.namelen = pos->namelen; if (maxaddr < pos->end) maxaddr = pos->end; if (verbose) { @@ -156,6 +151,5 @@ int map__browse(struct map *self) } mb.addrlen = snprintf(tmp, sizeof(tmp), "%llx", maxaddr); - mb.b.width += mb.addrlen * 2 + 4 + mb.namelen; - return map_browser__run(&mb, &es); + return map_browser__run(&mb); } diff --git a/tools/perf/util/ui/util.c b/tools/perf/util/ui/util.c index 04600e26ceea..9706d9d40279 100644 --- a/tools/perf/util/ui/util.c +++ b/tools/perf/util/ui/util.c @@ -11,8 +11,6 @@ #include "helpline.h" #include "util.h" -newtComponent newt_form__new(void); - static void newt_form__set_exit_keys(newtComponent self) { newtFormAddHotKey(self, NEWT_KEY_LEFT); @@ -22,7 +20,7 @@ static void newt_form__set_exit_keys(newtComponent self) newtFormAddHotKey(self, CTRL('c')); } -newtComponent newt_form__new(void) +static newtComponent newt_form__new(void) { newtComponent self = newtForm(NULL, NULL, 0); if (self) diff --git a/tools/perf/util/util.h b/tools/perf/util/util.h index f380fed74359..7562707ddd1c 100644 --- a/tools/perf/util/util.h +++ b/tools/perf/util/util.h @@ -266,19 +266,6 @@ bool strglobmatch(const char *str, const char *pat); bool strlazymatch(const char *str, const char *pat); unsigned long convert_unit(unsigned long value, char *unit); -#ifndef ESC -#define ESC 27 -#endif - -static inline bool is_exit_key(int key) -{ - char up; - if (key == CTRL('c') || key == ESC) - return true; - up = toupper(key); - return up == 'Q'; -} - #define _STR(x) #x #define STR(x) _STR(x) |