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CONFIG_PROVE_LOCKING is an expensive option which adds significant
overhead to lock operations. The examples are 5% power consumption increase
for vexpress with this option enabled, and improving netperf on the loopback
results by ~200% after disabling DEBUG_MUTEXES (DEBUG_MUTEXES is selected by
PROVE_LOCKING).
Move CONFIG_PROVE_LOCKING to a separate debug.conf fragment, so that it
could be enabled only when it is needed.
Signed-off-by: Andrey Konovalov <andrey.konovalov@linaro.org>
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This is Android's standard cpufreq governor and is enabled by
default in the AOSP tree.
Signed-off-by: Jon Medhurst <tixy@linaro.org>
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These options no longer exist.
Signed-off-by: Jon Medhurst <tixy@linaro.org>
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Commit 3d374d09 (final removal of CONFIG_EXPERIMENTAL) removed
CONFIG_EXPERIMENTAL from Linux.
Signed-off-by: Jon Medhurst <tixy@linaro.org>
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Signed-off-by: Fathi Boudra <fathi.boudra@linaro.org>
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Both the Android and Ubuntu have QA tests which expect to be able to
validate device-tree booting by looking in /proc/device-tree, so we
should enable this for all Linaro builds.
At the same time we can remove this option from ubuntu.conf as it's not
an Ubuntu specific requirement.
Signed-off-by: Jon Medhurst <tixy@linaro.org>
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The SD card emulator expects this.
Signed-off-by: Jon Medhurst <tixy@linaro.org>
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Enable CONFIG_HOTPLUG in linaro-base.conf as all Linaro kernels should
have it. Enabling CONFIG_DEBUG_FS and CONFIG_FUNCTION_TRACER add no
runtime slowdown if not used, so having them in linaro-base.conf is OK
too. Now that CONFIG_HOTPLUG and CONFIG_DEBUG_FS are in linaro-base.conf,
remove them from ubuntu.conf.
Signed-off-by: Andrey Konovalov <andrey.konovalov@linaro.org>
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We already have CONFIG_THUMB2_KERNEL=y which also selects CONFIG_AEABI
however if someone wanted to disable Thumb2 for debugging or other
reasons then they may try simply removing the Thumb2 config entry. This
however would then default to the old ABI and it seems there are some
obscure bugs in this little tested kernel variant. So, to save wasting
people's time let's make sure CONFIG_AEABI is explicitly selected.
As we are adding this to linaro-base.conf we can remove it from
android.conf (which probably had it as a leftover from when we
had Thumb2 disabled).
Signed-off-by: Jon Medhurst <tixy@linaro.org>
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This was originally done to workaround a toolchain bug which
seems to have now been resolved. See
https://bugs.launchpad.net/linaro-landing-team-arm/+bug/973466
Signed-off-by: Jon Medhurst <tixy@linaro.org>
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OHCI-HCD driver does not support multiple SoC drivers during the compile
time. Hence the generic driver should be disabled in ubuntu.conf and
enabled in respective board config files.
Signed-off-by: Tushar Behera <tushar.behera@linaro.org>
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AIB Daemon expects this config, see bug #1026119
(https://bugs.launchpad.net/linaro-landing-team-arm/+bug/1026119)
Also enable CONFIG_INPUT_MISC as CONFIG_INPUT_UINPUT depends on it.
Signed-off-by: Jon Medhurst <tixy@linaro.org>
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We now have a compatibility layer in Linaro kernels for this feature
in order to stop surfacefligger spinning an eating up 100% of a CPU
core.
Signed-off-by: Jon Medhurst <tixy@linaro.org>
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Signed-off-by: Ricardo Salveti de Araujo <ricardo.salveti@linaro.org>
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Signed-off-by: Ricardo Salveti de Araujo <ricardo.salveti@linaro.org>
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Signed-off-by: Ricardo Salveti de Araujo <ricardo.salveti@linaro.org>
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Not yet stable enough to be used as default for all boards we currently
support at Linaro.
Signed-off-by: Ricardo Salveti de Araujo <ricardo.salveti@linaro.org>
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Signed-off-by: Ricardo Salveti de Araujo <ricardo.salveti@linaro.org>
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Signed-off-by: Ricardo Salveti de Araujo <ricardo.salveti@linaro.org>
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ubuntu one
The ubuntu.conf now is based on the official ubuntu packages, enabling a
large set of configs and drivers.
Signed-off-by: Ricardo Salveti de Araujo <ricardo.salveti@linaro.org>
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CONFIG_PERF_COUNTERS was removed in comit 392d65a9 (perf: Remove
PERF_COUNTERS config option)
Signed-off-by: Jon Medhurst <tixy@linaro.org>
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CONFIG_MODULE was in both Ubuntu and Android configs so it would be
best if it is in the base config instead. Also, having
CONFIG_MODULE_UNLOAD in will enable the Gator module to be upgraded to a
later version via DKSM without rebooting, and allows for easier testing.
Signed-off-by: Jon Medhurst <tixy@linaro.org>
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Copied from branch linaro-configs-3.4 of
git://git.linaro.org/people/jstultz/android.git
Signed-off-by: Jon Medhurst <tixy@linaro.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace
Pull namespace bugfixes from Eric Biederman:
"This is three simple fixes against 3.9-rc1. I have tested each of
these fixes and verified they work correctly.
The userns oops in key_change_session_keyring and the BUG_ON triggered
by proc_ns_follow_link were found by Dave Jones.
I am including the enhancement for mount to only trigger requests of
filesystem modules here instead of delaying this for the 3.10 merge
window because it is both trivial and the kind of change that tends to
bit-rot if left untouched for two months."
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace:
proc: Use nd_jump_link in proc_ns_follow_link
fs: Limit sys_mount to only request filesystem modules (Part 2).
fs: Limit sys_mount to only request filesystem modules.
userns: Stop oopsing in key_change_session_keyring
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There is a more complete atmel patch-series out by Nick Dyer that fixes
this and other things, but in the meantime this is the minimal thing to
get the touchscreen going on (at least my) Pixel Chromebook.
Not that I want my dirty fingers near that beautiful screen, but it
seems that a non-initialized touchscreen will also end up being a
constant wakeup source, so you have to disable it to go to sleep. And
it's easier to just fix the initialization sequence.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Update proc_ns_follow_link to use nd_jump_link instead of just
manually updating nd.path.dentry.
This fixes the BUG_ON(nd->inode != parent->d_inode) reported by Dave
Jones and reproduced trivially with mkdir /proc/self/ns/uts/a.
Sigh it looks like the VFS change to require use of nd_jump_link
happend while proc_ns_follow_link was baking and since the common case
of proc_ns_follow_link continued to work without problems the need for
making this change was overlooked.
Cc: stable@vger.kernel.org
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs
Pull btrfs fixes from Chris Mason:
"These are scattered fixes and one performance improvement. The
biggest functional change is in how we throttle metadata changes. The
new code bumps our average file creation rate up by ~13% in fs_mark,
and lowers CPU usage.
Stefan bisected out a regression in our allocation code that made
balance loop on extents larger than 256MB."
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs:
Btrfs: improve the delayed inode throttling
Btrfs: fix a mismerge in btrfs_balance()
Btrfs: enforce min_bytes parameter during extent allocation
Btrfs: allow running defrag in parallel to administrative tasks
Btrfs: avoid deadlock on transaction waiting list
Btrfs: do not BUG_ON on aborted situation
Btrfs: do not BUG_ON in prepare_to_reloc
Btrfs: free all recorded tree blocks on error
Btrfs: build up error handling for merge_reloc_roots
Btrfs: check for NULL pointer in updating reloc roots
Btrfs: fix unclosed transaction handler when the async transaction commitment fails
Btrfs: fix wrong handle at error path of create_snapshot() when the commit fails
Btrfs: use set_nlink if our i_nlink is 0
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Add basic platform data to get the current upstream driver working
with the 224s touchpad and 1664s touchscreen.
We will be using NULL config so we will use the settings from the
devices' NVRAMs.
Signed-off-by: Benson Leung <bleung@chromium.org>
Tested-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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This same driver can be used by atmel based touchscreens and touchpads
(buttonpads). Platform data may specify a device is a touchpad
using the is_tp flag.
This will cause the driver to perform some touchpad specific
initializations, such as:
* register input device name "Atmel maXTouch Touchpad" instead of
Touchscreen.
* register BTN_LEFT & BTN_TOOL_* event types.
* register axis resolution (as a fixed constant, for now)
* register BUTTONPAD property
* process GPIO buttons using reportid T19
Input event GPIO mapping is done by the platform data key_map array.
key_map[x] should contain the KEY or BTN code to send when processing
GPIOx from T19. To specify a GPIO as not an input source, populate
with KEY_RESERVED, or 0.
Signed-off-by: Daniel Kurtz <djkurtz@chromium.org>
Signed-off-by: Benson Leung <bleung@chromium.org>
Signed-off-by: Nick Dyer <nick.dyer@itdev.co.uk>
Tested-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Pull CIFS fixes from Steve French:
"A small set of cifs fixes which includes one for a recent regression
in the write path (pointed out by Anton), some fixes for rename
problems and as promised for 3.9 removing the obsolete sockopt mount
option (and the accompanying deprecation warning)."
* 'for-next' of git://git.samba.org/sfrench/cifs-2.6:
CIFS: Fix missing of oplock_read value in smb30_values structure
cifs: don't try to unlock pagecache page after releasing it
cifs: remove the sockopt= mount option
cifs: Check server capability before attempting silly rename
cifs: Fix bug when checking error condition in cifs_rename_pending_delete()
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Merge misc fixes from Andrew Morton.
* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
alpha: boot: fix build breakage introduced by system.h disintegration
memcg: initialize kmem-cache destroying work earlier
Randy has moved
ksm: fix m68k build: only NUMA needs pfn_to_nid
dmi_scan: fix missing check for _DMI_ signature in smbios_present()
Revert parts of "hlist: drop the node parameter from iterators"
idr: remove WARN_ON_ONCE() on negative IDs
mm/mempolicy.c: fix sp_node_init() argument ordering
mm/mempolicy.c: fix wrong sp_node insertion
ipc: don't allocate a copy larger than max
ipc: fix potential oops when src msg > 4k w/ MSG_COPY
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Commit ec2212088c42 ("Disintegrate asm/system.h for Alpha") removed the
system.h include from boot/head.S, which puts the PAL_* asm constants
out of scope.
Include <asm/pal.h> so we can get building again.
Signed-off-by: Will Deacon <will.deacon@arm.com>
Cc: David Rusling <david.rusling@linaro.org>
Cc: David Howells <dhowells@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Fix a warning from lockdep caused by calling cancel_work_sync() for
uninitialized struct work. This path has been triggered by destructon
kmem-cache hierarchy via destroying its root kmem-cache.
cache ffff88003c072d80
obj ffff88003b410000 cache ffff88003c072d80
obj ffff88003b924000 cache ffff88003c20bd40
INFO: trying to register non-static key.
the code is fine but needs lockdep annotation.
turning off the locking correctness validator.
Pid: 2825, comm: insmod Tainted: G O 3.9.0-rc1-next-20130307+ #611
Call Trace:
__lock_acquire+0x16a2/0x1cb0
lock_acquire+0x8a/0x120
flush_work+0x38/0x2a0
__cancel_work_timer+0x89/0xf0
cancel_work_sync+0xb/0x10
kmem_cache_destroy_memcg_children+0x81/0xb0
kmem_cache_destroy+0xf/0xe0
init_module+0xcb/0x1000 [kmem_test]
do_one_initcall+0x11a/0x170
load_module+0x19b0/0x2320
SyS_init_module+0xc6/0xf0
system_call_fastpath+0x16/0x1b
Example module to demonstrate:
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/mm.h>
#include <linux/workqueue.h>
int __init mod_init(void)
{
int size = 256;
struct kmem_cache *cache;
void *obj;
struct page *page;
cache = kmem_cache_create("kmem_cache_test", size, size, 0, NULL);
if (!cache)
return -ENOMEM;
printk("cache %p\n", cache);
obj = kmem_cache_alloc(cache, GFP_KERNEL);
if (obj) {
page = virt_to_head_page(obj);
printk("obj %p cache %p\n", obj, page->slab_cache);
kmem_cache_free(cache, obj);
}
flush_scheduled_work();
obj = kmem_cache_alloc(cache, GFP_KERNEL);
if (obj) {
page = virt_to_head_page(obj);
printk("obj %p cache %p\n", obj, page->slab_cache);
kmem_cache_free(cache, obj);
}
kmem_cache_destroy(cache);
return -EBUSY;
}
module_init(mod_init);
MODULE_LICENSE("GPL");
Signed-off-by: Konstantin Khlebnikov <khlebnikov@openvz.org>
Cc: Glauber Costa <glommer@parallels.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Update email address and CREDITS info. xenotime.net is defunct.
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Harry Wei <harryxiyou@gmail.com>
Cc: Keiichi KII <k-keiichi@bx.jp.nec.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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A CONFIG_DISCONTIGMEM=y m68k config gave
mm/ksm.c: In function `get_kpfn_nid':
mm/ksm.c:492: error: implicit declaration of function `pfn_to_nid'
linux/mmzone.h declares it for CONFIG_SPARSEMEM and CONFIG_FLATMEM, but
expects the arch's asm/mmzone.h to declare it for CONFIG_DISCONTIGMEM
(see arch/mips/include/asm/mmzone.h for example).
Or perhaps it is only expected when CONFIG_NUMA=y: too much of a maze,
and m68k got away without it so far, so fix the build in mm/ksm.c.
Signed-off-by: Hugh Dickins <hughd@google.com>
Reported-by: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Petr Holasek <pholasek@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Commit 9f9c9cbb6057 ("drivers/firmware/dmi_scan.c: fetch dmi version
from SMBIOS if it exists") hoisted the check for "_DMI_" into
dmi_scan_machine(), which means that we don't bother to check for
"_DMI_" at offset 16 in an SMBIOS entry. smbios_present() may also call
dmi_present() for an address where we found "_SM_", if it failed further
validation.
Check for "_DMI_" in smbios_present() before calling dmi_present().
[akpm@linux-foundation.org: fix build]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Reported-by: Tim McGrath <tmhikaru@gmail.com>
Tested-by: Tim Mcgrath <tmhikaru@gmail.com>
Cc: Zhenzhong Duan <zhenzhong.duan@oracle.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Commit b67bfe0d42ca ("hlist: drop the node parameter from iterators")
did a lot of nice changes but also contains two small hunks that seem to
have slipped in accidentally and have no apparent connection to the
intent of the patch.
This reverts the two extraneous changes.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Peter Senna Tschudin <peter.senna@gmail.com>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Sasha Levin <sasha.levin@oracle.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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idr_find(), idr_remove() and idr_replace() used to silently ignore the
sign bit and perform lookup with the rest of the bits. The weird behavior
has been changed such that negative IDs are treated as invalid. As the
behavior change was subtle, WARN_ON_ONCE() was added in the hope of
determining who's calling idr functions with negative IDs so that they can
be examined for problems.
Up until now, all two reported cases are ID number coming directly from
userland and getting fed into idr_find() and the warnings seem to cause
more problems than being helpful. Drop the WARN_ON_ONCE()s.
Signed-off-by: Tejun Heo <tj@kernel.org>
Reported-by: <markus@trippelsdorf.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Currently, n_new is wrongly initialized. start and end parameter are
inverted. Let's fix it.
Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Hillf Danton <dhillf@gmail.com>
Cc: Sasha Levin <sasha.levin@oracle.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Dave Jones <davej@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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n->end is accessed in sp_insert(). Thus it should be update
before calling sp_insert(). This mistake may make kernel panic.
Signed-off-by: Hillf Danton <dhillf@gmail.com>
Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Sasha Levin <sasha.levin@oracle.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Dave Jones <davej@redhat.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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When MSG_COPY is set, a duplicate message must be allocated for the copy
before locking the queue. However, the copy could not be larger than was
sent which is limited to msg_ctlmax.
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Acked-by: Stanislav Kinsbursky <skinsbursky@parallels.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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If the src msg is > 4k, then dest->next points to the
next allocated segment; resetting it just prior to dereferencing
is bad.
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Acked-by: Stanislav Kinsbursky <skinsbursky@parallels.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile
Pull tile architecture fixes from Chris Metcalf:
"This fixes the bug that Al Viro spotted with the compat llseek code.
I also fixed the compat syscall definitions to use the new syscall
define macros to properly sign-extend their arguments."
* 'stable' of git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile:
tile: properly use COMPAT_SYSCALL_DEFINEx
tile: work around bug in the generic sys_llseek
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git://git.kernel.org/pub/scm/linux/kernel/git/jhogan/metag
Pull metag bugfixes from James Hogan:
"A couple of fairly minor arch/metag integration fixes from v3.9-rc1:
- remove SET_PERSONALITY(): use default definition like other arches
now do.
- inhibit NUMA balancing: like SH, NUMA is used for memories with
different latencies. ARCH_WANT_VARIABLE_LOCALITY has been added
for this purpose."
* tag 'metag-for-v3.9-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/jhogan/metag:
metag: Inhibit NUMA balancing.
metag: remove SET_PERSONALITY()
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git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
"All are boring small fixes in various parts:
- A few possible NULL-dereference or zero-division Oops fixes
- Fix vmaster slave volume notification
- Add codec ID for ALC233
- Various fixes in several ASoC WM codecs
- ASoC tegra i2c fix
Sorry if you wanted a thrilling adventure with huge sharks :)"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
ALSA: ice1712: Initialize card->private_data properly
ALSA: hda - Add support of new codec ALC233
ALSA: hda/ca0132 - Avoid division by zero in dspxfr_one_seg()
ALSA: hda - check NULL pointer when creating SPDIF PCM switch
ALSA: hda - check NULL pointer when creating SPDIF controls
ASoC: wm5102: Apply a SYSCLK patch for later revs
ALSA: vmaster: Fix slave change notification
ASoC: tegra: fix I2S bit count mask
ALSA: seq: seq_oss_event: missing range checks
ASoC: wm8350: Use jiffies rather than msecs in schedule_delayed_work()
ASoC: wm5110: Correct OUT2/3 volume and switch names
ASoC: wm5102: Correct OUT2 volume and switch names
ASoC: wm8960: Fix ADC power bits
ASoC: wm8960: Correct register 0 and 1 defaults
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git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid
Pull HID fix from Jiri Kosina:
"Bugfix for a long-standing bug in logitech-dj driver causing all sorts
of random initialization problems, finally debugged by Benjamin
Tissoires with help of Bob Bowles."
* 'for-3.9/upstream-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid:
HID: logitech-dj: do not directly call hid_output_raw_report() during probe
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git://git.kernel.org/pub/scm/linux/kernel/git/tytso/random
Pull random fixes from Ted Ts'o:
"Fix a circular locking dependency in random's collection of cputime
used by a thread when it exits."
* tag 'random_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/random:
random: fix locking dependency with the tasklist_lock
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It's "normal" - it can happen if the file descriptor you followed was
opened with O_NOFOLLOW.
Reported-by: Dave Jones <davej@redhat.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: stable@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Peter Anvin:
"Several boot fixes (MacBook, legacy EFI bootloaders), another
please-don't-brick fix, and some minor stuff."
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86: Do not try to sync identity map for non-mapped pages
x86, doc: Be explicit about what the x86 struct boot_params requires
x86: Don't clear efi_info even if the sentinel hits
x86, mm: Make sure to find a 2M free block for the first mapped area
x86: Fix 32-bit *_cpu_data initializers
efivarfs: return accurate error code in efivarfs_fill_super()
efivars: efivarfs_valid_name() should handle pstore syntax
efi: be more paranoid about available space when creating variables
iommu, x86: Add DMA remap fault reason
x86, smpboot: Remove unused variable
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