diff options
| -rw-r--r-- | arch/x86/kernel/process_32.c | 32 | ||||
| -rw-r--r-- | arch/x86/kernel/process_64.c | 23 | ||||
| -rw-r--r-- | arch/x86/kernel/smpboot.c | 29 | ||||
| -rw-r--r-- | include/asm-x86/smp.h | 1 |
4 files changed, 30 insertions, 55 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 diff --git a/arch/x86/kernel/process_64.c b/arch/x86/kernel/process_64.c index dfd3f5752085..aa28ed01cdf3 100644 --- a/arch/x86/kernel/process_64.c +++ b/arch/x86/kernel/process_64.c @@ -85,29 +85,6 @@ void exit_idle(void) __exit_idle(); } -#ifdef CONFIG_HOTPLUG_CPU -DECLARE_PER_CPU(int, cpu_state); - -#include <asm/nmi.h> -/* We halt the CPU with physical CPU hotplug */ -void native_play_dead(void) -{ - idle_task_exit(); - mb(); - /* Ack it */ - __get_cpu_var(cpu_state) = CPU_DEAD; - - 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 diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c index c414cee296ba..28b4287296aa 100644 --- a/arch/x86/kernel/smpboot.c +++ b/arch/x86/kernel/smpboot.c @@ -1402,6 +1402,29 @@ void native_cpu_die(unsigned int cpu) } printk(KERN_ERR "CPU %u didn't die...\n", cpu); } + +void play_dead_common(void) +{ + idle_task_exit(); + reset_lazy_tlbstate(); + irq_ctx_exit(raw_smp_processor_id()); + + mb(); + /* Ack it */ + __get_cpu_var(cpu_state) = CPU_DEAD; + + /* + * With physical CPU hotplug, we should halt the cpu + */ + local_irq_disable(); +} + +void native_play_dead(void) +{ + play_dead_common(); + wbinvd_halt(); +} + #else /* ... !CONFIG_HOTPLUG_CPU */ int native_cpu_disable(void) { @@ -1413,4 +1436,10 @@ void native_cpu_die(unsigned int cpu) /* We said "no" in __cpu_disable */ BUG(); } + +void native_play_dead(void) +{ + BUG(); +} + #endif diff --git a/include/asm-x86/smp.h b/include/asm-x86/smp.h index 3bec6b478213..17305e72f348 100644 --- a/include/asm-x86/smp.h +++ b/include/asm-x86/smp.h @@ -132,6 +132,7 @@ int native_cpu_up(unsigned int cpunum); int native_cpu_disable(void); void native_cpu_die(unsigned int cpu); void native_play_dead(void); +void play_dead_common(void); void native_send_call_func_ipi(cpumask_t mask); void native_send_call_func_single_ipi(int cpu); |