Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/jk/spufs into...

[linux-2.6] / arch / x86 / kernel / process_32.c

diff --git a/arch/x86/kernel/process_32.c b/arch/x86/kernel/process_32.c
index 9a139f6c9df30fa2c304e96da89b99fd62b78a8d..3b7a1ddcc0bce7eca8c989906fa377d4f0322f50 100644 (file)
--- a/arch/x86/kernel/process_32.c
+++ b/arch/x86/kernel/process_32.c
@@ -95,7 +95,6 @@ static inline void play_dead(void)
 {
        /* This must be done before dead CPU ack */
        cpu_exit_clear();
-       wbinvd();
        mb();
        /* Ack it */
        __get_cpu_var(cpu_state) = CPU_DEAD;
@@ -104,8 +103,8 @@ static inline void play_dead(void)
         * With physical CPU hotplug, we should halt the cpu
         */
        local_irq_disable();
-       while (1)
-               halt();
+       /* mask all interrupts, flush any and all caches, and halt */
+       wbinvd_halt();
 }
 #else
 static inline void play_dead(void)
@@ -128,7 +127,7 @@ void cpu_idle(void)
 
        /* endless idle loop with no priority at all */
        while (1) {
-               tick_nohz_stop_sched_tick();
+               tick_nohz_stop_sched_tick(1);
                while (!need_resched()) {
 
                        check_pgt_cache();
@@ -142,7 +141,10 @@ void cpu_idle(void)
 
                        local_irq_disable();
                        __get_cpu_var(irq_stat).idle_timestamp = jiffies;
+                       /* Don't trace irqs off for idle */
+                       stop_critical_timings();
                        pm_idle();
+                       start_critical_timings();
                }
                tick_nohz_restart_sched_tick();
                preempt_enable_no_resched();