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| author | Alex Nixon <alex.nixon@citrix.com> | 2008-08-22 12:52:13 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-08-25 10:59:19 +0200 |
| commit | a21f5d88c17a40941f6239d1959d89e8493e8e01 (patch) | |
| tree | 767f763a4e05afa4b0e89192730db47e58c1180b /arch/x86/kernel/process_32.c | |
| parent | x86_32: clean up play_dead (diff) | |
| download | linux-a21f5d88c17a40941f6239d1959d89e8493e8e01.tar.xz linux-a21f5d88c17a40941f6239d1959d89e8493e8e01.zip | |
x86: unify x86_32 and x86_64 play_dead into one function
Add the new play_dead into smpboot.c, as it fits more cleanly in there
alongside other CONFIG_HOTPLUG functions.
Separate out the common code into its own function.
Signed-off-by: Alex Nixon <alex.nixon@citrix.com>
Acked-by: Jeremy Fitzhardinge <jeremy@goop.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/kernel/process_32.c')
| -rw-r--r-- | arch/x86/kernel/process_32.c | 32 |
1 files changed, 0 insertions, 32 deletions
diff --git a/arch/x86/kernel/process_32.c b/arch/x86/kernel/process_32.c index d55eb49584b1..633cf06578fa 100644 --- a/arch/x86/kernel/process_32.c +++ b/arch/x86/kernel/process_32.c @@ -72,38 +72,6 @@ unsigned long thread_saved_pc(struct task_struct *tsk) return ((unsigned long *)tsk->thread.sp)[3]; } -#ifdef CONFIG_HOTPLUG_CPU -#include <asm/nmi.h> - -/* We don't actually take CPU down, just spin without interrupts. */ -void native_play_dead(void) -{ - int cpu = raw_smp_processor_id(); - - idle_task_exit(); - - reset_lazy_tlbstate(); - - irq_ctx_exit(cpu); - - mb(); - /* Ack it */ - __get_cpu_var(cpu_state) = CPU_DEAD; - - /* - * With physical CPU hotplug, we should halt the cpu - */ - local_irq_disable(); - /* mask all interrupts, flush any and all caches, and halt */ - wbinvd_halt(); -} -#else -void native_play_dead(void) -{ - BUG(); -} -#endif /* CONFIG_HOTPLUG_CPU */ - /* * The idle thread. There's no useful work to be * done, so just try to conserve power and have a |