diff options
Diffstat (limited to 'arch/mn10300')
-rw-r--r-- | arch/mn10300/include/asm/irqflags.h | 5 | ||||
-rw-r--r-- | arch/mn10300/include/asm/pci.h | 2 | ||||
-rw-r--r-- | arch/mn10300/include/asm/smp.h | 4 | ||||
-rw-r--r-- | arch/mn10300/include/asm/thread_info.h | 2 | ||||
-rw-r--r-- | arch/mn10300/include/asm/uaccess.h | 2 | ||||
-rw-r--r-- | arch/mn10300/include/asm/unistd.h | 10 | ||||
-rw-r--r-- | arch/mn10300/include/uapi/asm/socket.h | 2 | ||||
-rw-r--r-- | arch/mn10300/kernel/entry.S | 19 | ||||
-rw-r--r-- | arch/mn10300/kernel/process.c | 71 | ||||
-rw-r--r-- | arch/mn10300/kernel/setup.c | 54 | ||||
-rw-r--r-- | arch/mn10300/kernel/smp.c | 7 | ||||
-rw-r--r-- | arch/mn10300/kernel/traps.c | 11 | ||||
-rw-r--r-- | arch/mn10300/mm/init.c | 23 | ||||
-rw-r--r-- | arch/mn10300/unit-asb2305/pci.c | 1 |
14 files changed, 48 insertions, 165 deletions
diff --git a/arch/mn10300/include/asm/irqflags.h b/arch/mn10300/include/asm/irqflags.h index 678f68d5f37..8730c0a3c37 100644 --- a/arch/mn10300/include/asm/irqflags.h +++ b/arch/mn10300/include/asm/irqflags.h @@ -13,9 +13,8 @@ #define _ASM_IRQFLAGS_H #include <asm/cpu-regs.h> -#ifndef __ASSEMBLY__ -#include <linux/smp.h> -#endif +/* linux/smp.h <- linux/irqflags.h needs asm/smp.h first */ +#include <asm/smp.h> /* * interrupt control diff --git a/arch/mn10300/include/asm/pci.h b/arch/mn10300/include/asm/pci.h index 8137c25c4e1..6f31cc0f1a8 100644 --- a/arch/mn10300/include/asm/pci.h +++ b/arch/mn10300/include/asm/pci.h @@ -103,4 +103,6 @@ static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel) return channel ? 15 : 14; } +#include <asm-generic/pci_iomap.h> + #endif /* _ASM_PCI_H */ diff --git a/arch/mn10300/include/asm/smp.h b/arch/mn10300/include/asm/smp.h index 6745dbe6494..56c42417d42 100644 --- a/arch/mn10300/include/asm/smp.h +++ b/arch/mn10300/include/asm/smp.h @@ -24,6 +24,7 @@ #ifndef __ASSEMBLY__ #include <linux/threads.h> #include <linux/cpumask.h> +#include <linux/thread_info.h> #endif #ifdef CONFIG_SMP @@ -85,7 +86,7 @@ extern cpumask_t cpu_boot_map; extern void smp_init_cpus(void); extern void smp_cache_interrupt(void); extern void send_IPI_allbutself(int irq); -extern int smp_nmi_call_function(smp_call_func_t func, void *info, int wait); +extern int smp_nmi_call_function(void (*func)(void *), void *info, int wait); extern void arch_send_call_function_single_ipi(int cpu); extern void arch_send_call_function_ipi_mask(const struct cpumask *mask); @@ -100,6 +101,7 @@ extern void __cpu_die(unsigned int cpu); #ifndef __ASSEMBLY__ static inline void smp_init_cpus(void) {} +#define raw_smp_processor_id() 0 #endif /* __ASSEMBLY__ */ #endif /* CONFIG_SMP */ diff --git a/arch/mn10300/include/asm/thread_info.h b/arch/mn10300/include/asm/thread_info.h index f90062b0622..224b4262486 100644 --- a/arch/mn10300/include/asm/thread_info.h +++ b/arch/mn10300/include/asm/thread_info.h @@ -165,8 +165,6 @@ void arch_release_thread_info(struct thread_info *ti); #define _TIF_WORK_MASK 0x0000FFFE /* work to do on interrupt/exception return */ #define _TIF_ALLWORK_MASK 0x0000FFFF /* work to do on any return to u-space */ -#define tsk_is_polling(t) test_tsk_thread_flag(t, TIF_POLLING_NRFLAG) - #endif /* __KERNEL__ */ #endif /* _ASM_THREAD_INFO_H */ diff --git a/arch/mn10300/include/asm/uaccess.h b/arch/mn10300/include/asm/uaccess.h index 780560b330d..d7966e0f769 100644 --- a/arch/mn10300/include/asm/uaccess.h +++ b/arch/mn10300/include/asm/uaccess.h @@ -161,7 +161,7 @@ struct __large_struct { unsigned long buf[100]; }; #define __get_user_check(x, ptr, size) \ ({ \ - const __typeof__(ptr) __guc_ptr = (ptr); \ + const __typeof__(*(ptr))* __guc_ptr = (ptr); \ int _e; \ if (likely(__access_ok((unsigned long) __guc_ptr, (size)))) \ _e = __get_user_nocheck((x), __guc_ptr, (size)); \ diff --git a/arch/mn10300/include/asm/unistd.h b/arch/mn10300/include/asm/unistd.h index 7f9d9adfa51..9d4e2d1ef90 100644 --- a/arch/mn10300/include/asm/unistd.h +++ b/arch/mn10300/include/asm/unistd.h @@ -45,14 +45,4 @@ #define __ARCH_WANT_SYS_VFORK #define __ARCH_WANT_SYS_CLONE -/* - * "Conditional" syscalls - * - * What we want is __attribute__((weak,alias("sys_ni_syscall"))), - * but it doesn't work on all toolchains, so we just do it by hand - */ -#ifndef cond_syscall -#define cond_syscall(x) asm(".weak\t" #x "\n\t.set\t" #x ",sys_ni_syscall"); -#endif - #endif /* _ASM_UNISTD_H */ diff --git a/arch/mn10300/include/uapi/asm/socket.h b/arch/mn10300/include/uapi/asm/socket.h index 5c7c7c98854..b4ce844c939 100644 --- a/arch/mn10300/include/uapi/asm/socket.h +++ b/arch/mn10300/include/uapi/asm/socket.h @@ -72,4 +72,6 @@ #define SO_LOCK_FILTER 44 +#define SO_SELECT_ERR_QUEUE 45 + #endif /* _ASM_SOCKET_H */ diff --git a/arch/mn10300/kernel/entry.S b/arch/mn10300/kernel/entry.S index 68fcab8f8f6..222152a3f75 100644 --- a/arch/mn10300/kernel/entry.S +++ b/arch/mn10300/kernel/entry.S @@ -60,6 +60,7 @@ ENTRY(ret_from_kernel_thread) mov (REG_D0,fp),d0 mov (REG_A0,fp),a0 calls (a0) + GET_THREAD_INFO a2 # A2 must be set on return from sys_exit() clr d0 mov d0,(REG_D0,fp) jmp syscall_exit @@ -107,10 +108,10 @@ syscall_exit_work: and EPSW_nSL,d0 beq resume_kernel # returning to supervisor mode - btst _TIF_SYSCALL_TRACE,d2 - beq work_pending LOCAL_IRQ_ENABLE # could let syscall_trace_exit() call # schedule() instead + btst _TIF_SYSCALL_TRACE,d2 + beq work_pending mov fp,d0 call syscall_trace_exit[],0 # do_syscall_trace(regs) jmp resume_userspace @@ -123,6 +124,7 @@ work_pending: work_resched: call schedule[],0 +resume_userspace: # make sure we don't miss an interrupt setting need_resched or # sigpending between sampling and the rti LOCAL_IRQ_DISABLE @@ -131,6 +133,8 @@ work_resched: mov (TI_flags,a2),d2 btst _TIF_WORK_MASK,d2 beq restore_all + + LOCAL_IRQ_ENABLE btst _TIF_NEED_RESCHED,d2 bne work_resched @@ -169,17 +173,6 @@ ret_from_intr: and EPSW_nSL,d0 beq resume_kernel # returning to supervisor mode -ENTRY(resume_userspace) - # make sure we don't miss an interrupt setting need_resched or - # sigpending between sampling and the rti - LOCAL_IRQ_DISABLE - - # is there any work to be done on int/exception return? - mov (TI_flags,a2),d2 - btst _TIF_WORK_MASK,d2 - bne work_pending - jmp restore_all - #ifdef CONFIG_PREEMPT ENTRY(resume_kernel) LOCAL_IRQ_DISABLE diff --git a/arch/mn10300/kernel/process.c b/arch/mn10300/kernel/process.c index 84f4e97e307..3707da583d0 100644 --- a/arch/mn10300/kernel/process.c +++ b/arch/mn10300/kernel/process.c @@ -50,77 +50,19 @@ unsigned long thread_saved_pc(struct task_struct *tsk) void (*pm_power_off)(void); EXPORT_SYMBOL(pm_power_off); -#if !defined(CONFIG_SMP) || defined(CONFIG_HOTPLUG_CPU) -/* - * we use this if we don't have any better idle routine - */ -static void default_idle(void) -{ - local_irq_disable(); - if (!need_resched()) - safe_halt(); - else - local_irq_enable(); -} - -#else /* !CONFIG_SMP || CONFIG_HOTPLUG_CPU */ /* * On SMP it's slightly faster (but much more power-consuming!) * to poll the ->work.need_resched flag instead of waiting for the * cross-CPU IPI to arrive. Use this option with caution. + * + * tglx: No idea why this depends on HOTPLUG_CPU !?! */ -static inline void poll_idle(void) -{ - int oldval; - - local_irq_enable(); - - /* - * Deal with another CPU just having chosen a thread to - * run here: - */ - oldval = test_and_clear_thread_flag(TIF_NEED_RESCHED); - - if (!oldval) { - set_thread_flag(TIF_POLLING_NRFLAG); - while (!need_resched()) - cpu_relax(); - clear_thread_flag(TIF_POLLING_NRFLAG); - } else { - set_need_resched(); - } -} -#endif /* !CONFIG_SMP || CONFIG_HOTPLUG_CPU */ - -/* - * the idle thread - * - there's no useful work to be done, so just try to conserve power and have - * a low exit latency (ie sit in a loop waiting for somebody to say that - * they'd like to reschedule) - */ -void cpu_idle(void) +#if !defined(CONFIG_SMP) || defined(CONFIG_HOTPLUG_CPU) +void arch_cpu_idle(void) { - /* endless idle loop with no priority at all */ - for (;;) { - rcu_idle_enter(); - while (!need_resched()) { - void (*idle)(void); - - smp_rmb(); - if (!idle) { -#if defined(CONFIG_SMP) && !defined(CONFIG_HOTPLUG_CPU) - idle = poll_idle; -#else /* CONFIG_SMP && !CONFIG_HOTPLUG_CPU */ - idle = default_idle; -#endif /* CONFIG_SMP && !CONFIG_HOTPLUG_CPU */ - } - idle(); - } - rcu_idle_exit(); - - schedule_preempt_disabled(); - } + safe_halt(); } +#endif void release_segments(struct mm_struct *mm) { @@ -155,6 +97,7 @@ void machine_power_off(void) void show_regs(struct pt_regs *regs) { + show_regs_print_info(KERN_DEFAULT); } /* diff --git a/arch/mn10300/kernel/setup.c b/arch/mn10300/kernel/setup.c index 33c3bd1e5c6..ebac9c11f79 100644 --- a/arch/mn10300/kernel/setup.c +++ b/arch/mn10300/kernel/setup.c @@ -38,6 +38,7 @@ struct mn10300_cpuinfo boot_cpu_data; /* For PCI or other memory-mapped resources */ unsigned long pci_mem_start = 0x18000000; +static char __initdata cmd_line[COMMAND_LINE_SIZE]; char redboot_command_line[COMMAND_LINE_SIZE] = "console=ttyS0,115200 root=/dev/mtdblock3 rw"; @@ -74,45 +75,19 @@ static const char *const mn10300_cputypes[] = { }; /* - * + * Pick out the memory size. We look for mem=size, + * where size is "size[KkMm]" */ -static void __init parse_mem_cmdline(char **cmdline_p) +static int __init early_mem(char *p) { - char *from, *to, c; - - /* save unparsed command line copy for /proc/cmdline */ - strcpy(boot_command_line, redboot_command_line); - - /* see if there's an explicit memory size option */ - from = redboot_command_line; - to = redboot_command_line; - c = ' '; - - for (;;) { - if (c == ' ' && !memcmp(from, "mem=", 4)) { - if (to != redboot_command_line) - to--; - memory_size = memparse(from + 4, &from); - } - - c = *(from++); - if (!c) - break; - - *(to++) = c; - } - - *to = '\0'; - *cmdline_p = redboot_command_line; + memory_size = memparse(p, &p); if (memory_size == 0) panic("Memory size not known\n"); - memory_end = (unsigned long) CONFIG_KERNEL_RAM_BASE_ADDRESS + - memory_size; - if (memory_end > phys_memory_end) - memory_end = phys_memory_end; + return 0; } +early_param("mem", early_mem); /* * architecture specific setup @@ -125,7 +100,20 @@ void __init setup_arch(char **cmdline_p) cpu_init(); unit_setup(); smp_init_cpus(); - parse_mem_cmdline(cmdline_p); + + /* save unparsed command line copy for /proc/cmdline */ + strlcpy(boot_command_line, redboot_command_line, COMMAND_LINE_SIZE); + + /* populate cmd_line too for later use, preserving boot_command_line */ + strlcpy(cmd_line, boot_command_line, COMMAND_LINE_SIZE); + *cmdline_p = cmd_line; + + parse_early_param(); + + memory_end = (unsigned long) CONFIG_KERNEL_RAM_BASE_ADDRESS + + memory_size; + if (memory_end > phys_memory_end) + memory_end = phys_memory_end; init_mm.start_code = (unsigned long)&_text; init_mm.end_code = (unsigned long) &_etext; diff --git a/arch/mn10300/kernel/smp.c b/arch/mn10300/kernel/smp.c index 5d7e152a23b..a17f9c9c14c 100644 --- a/arch/mn10300/kernel/smp.c +++ b/arch/mn10300/kernel/smp.c @@ -675,7 +675,7 @@ int __init start_secondary(void *unused) #ifdef CONFIG_GENERIC_CLOCKEVENTS init_clockevents(); #endif - cpu_idle(); + cpu_startup_entry(CPUHP_ONLINE); return 0; } @@ -935,8 +935,6 @@ int __cpu_up(unsigned int cpu, struct task_struct *tidle) int timeout; #ifdef CONFIG_HOTPLUG_CPU - if (num_online_cpus() == 1) - disable_hlt(); if (sleep_mode[cpu]) run_wakeup_cpu(cpu); #endif /* CONFIG_HOTPLUG_CPU */ @@ -1003,9 +1001,6 @@ int __cpu_disable(void) void __cpu_die(unsigned int cpu) { run_sleep_cpu(cpu); - - if (num_online_cpus() == 1) - enable_hlt(); } #ifdef CONFIG_MN10300_CACHE_ENABLED diff --git a/arch/mn10300/kernel/traps.c b/arch/mn10300/kernel/traps.c index b900e5afa0a..a7a987c7954 100644 --- a/arch/mn10300/kernel/traps.c +++ b/arch/mn10300/kernel/traps.c @@ -294,17 +294,6 @@ void show_stack(struct task_struct *task, unsigned long *sp) } /* - * the architecture-independent dump_stack generator - */ -void dump_stack(void) -{ - unsigned long stack; - - show_stack(current, &stack); -} -EXPORT_SYMBOL(dump_stack); - -/* * dump the register file in the specified exception frame */ void show_registers_only(struct pt_regs *regs) diff --git a/arch/mn10300/mm/init.c b/arch/mn10300/mm/init.c index e57e5bc2356..5a8ace63a6b 100644 --- a/arch/mn10300/mm/init.c +++ b/arch/mn10300/mm/init.c @@ -139,30 +139,11 @@ void __init mem_init(void) } /* - * - */ -void free_init_pages(char *what, unsigned long begin, unsigned long end) -{ - unsigned long addr; - - for (addr = begin; addr < end; addr += PAGE_SIZE) { - ClearPageReserved(virt_to_page(addr)); - init_page_count(virt_to_page(addr)); - memset((void *) addr, 0xcc, PAGE_SIZE); - free_page(addr); - totalram_pages++; - } - printk(KERN_INFO "Freeing %s: %ldk freed\n", what, (end - begin) >> 10); -} - -/* * recycle memory containing stuff only required for initialisation */ void free_initmem(void) { - free_init_pages("unused kernel memory", - (unsigned long) &__init_begin, - (unsigned long) &__init_end); + free_initmem_default(POISON_FREE_INITMEM); } /* @@ -171,6 +152,6 @@ void free_initmem(void) #ifdef CONFIG_BLK_DEV_INITRD void free_initrd_mem(unsigned long start, unsigned long end) { - free_init_pages("initrd memory", start, end); + free_reserved_area(start, end, POISON_FREE_INITMEM, "initrd"); } #endif diff --git a/arch/mn10300/unit-asb2305/pci.c b/arch/mn10300/unit-asb2305/pci.c index 1adcf024bb9..e37fac0461f 100644 --- a/arch/mn10300/unit-asb2305/pci.c +++ b/arch/mn10300/unit-asb2305/pci.c @@ -19,6 +19,7 @@ #include <linux/delay.h> #include <linux/irq.h> #include <asm/io.h> +#include <asm/irq.h> #include "pci-asb2305.h" unsigned int pci_probe = 1; |