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-rw-r--r--arch/ppc64/kernel/idle.c15
1 files changed, 6 insertions, 9 deletions
diff --git a/arch/ppc64/kernel/idle.c b/arch/ppc64/kernel/idle.c
index 8fec2746980..715bc0e71e0 100644
--- a/arch/ppc64/kernel/idle.c
+++ b/arch/ppc64/kernel/idle.c
@@ -34,15 +34,11 @@ extern void power4_idle(void);
void default_idle(void)
{
- long oldval;
unsigned int cpu = smp_processor_id();
+ set_thread_flag(TIF_POLLING_NRFLAG);
while (1) {
- oldval = test_and_clear_thread_flag(TIF_NEED_RESCHED);
-
- if (!oldval) {
- set_thread_flag(TIF_POLLING_NRFLAG);
-
+ if (!need_resched()) {
while (!need_resched() && !cpu_is_offline(cpu)) {
ppc64_runlatch_off();
@@ -55,13 +51,12 @@ void default_idle(void)
}
HMT_medium();
- clear_thread_flag(TIF_POLLING_NRFLAG);
- } else {
- set_need_resched();
}
ppc64_runlatch_on();
+ preempt_enable_no_resched();
schedule();
+ preempt_disable();
if (cpu_is_offline(cpu) && system_state == SYSTEM_RUNNING)
cpu_die();
}
@@ -77,7 +72,9 @@ void native_idle(void)
if (need_resched()) {
ppc64_runlatch_on();
+ preempt_enable_no_resched();
schedule();
+ preempt_disable();
}
if (cpu_is_offline(smp_processor_id()) &&