diff options
| author | Ingo Molnar <mingo@elte.hu> | 2011-12-14 08:16:43 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2011-12-14 08:16:43 +0100 |
| commit | 919b83452b2e7c1dbced0456015508b4b9585db3 (patch) | |
| tree | 836d0c32b814f7bd5fed83e19b6a2ab77dcf6987 /arch/powerpc/kernel/idle.c | |
| parent | 373da0a2a33018d560afcb2c77f8842985d79594 (diff) | |
| parent | a513f6bab0939800dcf1e7c075e733420cf967c5 (diff) | |
Merge branch 'rcu/next' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu into core/rcu
Diffstat (limited to 'arch/powerpc/kernel/idle.c')
| -rw-r--r-- | arch/powerpc/kernel/idle.c | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/arch/powerpc/kernel/idle.c b/arch/powerpc/kernel/idle.c index 39a2baa6ad58..9c3cd490b1bd 100644 --- a/arch/powerpc/kernel/idle.c +++ b/arch/powerpc/kernel/idle.c @@ -46,6 +46,12 @@ static int __init powersave_off(char *arg) } __setup("powersave=off", powersave_off); +#if defined(CONFIG_PPC_PSERIES) && defined(CONFIG_TRACEPOINTS) +static const bool idle_uses_rcu = 1; +#else +static const bool idle_uses_rcu; +#endif + /* * The body of the idle task. */ @@ -56,7 +62,10 @@ void cpu_idle(void) set_thread_flag(TIF_POLLING_NRFLAG); while (1) { - tick_nohz_stop_sched_tick(1); + tick_nohz_idle_enter(); + if (!idle_uses_rcu) + rcu_idle_enter(); + while (!need_resched() && !cpu_should_die()) { ppc64_runlatch_off(); @@ -93,7 +102,9 @@ void cpu_idle(void) HMT_medium(); ppc64_runlatch_on(); - tick_nohz_restart_sched_tick(); + if (!idle_uses_rcu) + rcu_idle_exit(); + tick_nohz_idle_exit(); preempt_enable_no_resched(); if (cpu_should_die()) cpu_die(); |