diff options
| author | Ingo Molnar <mingo@elte.hu> | 2008-07-26 15:30:40 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-07-26 15:30:40 +0200 |
| commit | 1503af661947b7a4a09355cc2ae6aa0d43f16776 (patch) | |
| tree | 5bfcfadf2dd2d98c2ad251c96d7ee43a6903819a /kernel/time/tick-sched.c | |
| parent | a31863168660c6b6f6c7ffe05bb6a38e97803326 (diff) | |
| parent | 024e8ac04453b3525448c31ef39848cf675ba6db (diff) | |
Merge branch 'linus' into x86/header-guards
Conflicts:
include/asm-x86/gpio.h
include/asm-x86/ide.h
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/time/tick-sched.c')
| -rw-r--r-- | kernel/time/tick-sched.c | 16 |
1 files changed, 12 insertions, 4 deletions
diff --git a/kernel/time/tick-sched.c b/kernel/time/tick-sched.c index beef7ccdf842..825b4c00fe44 100644 --- a/kernel/time/tick-sched.c +++ b/kernel/time/tick-sched.c @@ -140,8 +140,6 @@ void tick_nohz_update_jiffies(void) if (!ts->tick_stopped) return; - touch_softlockup_watchdog(); - cpu_clear(cpu, nohz_cpu_mask); now = ktime_get(); ts->idle_waketime = now; @@ -149,6 +147,8 @@ void tick_nohz_update_jiffies(void) local_irq_save(flags); tick_do_update_jiffies64(now); local_irq_restore(flags); + + touch_softlockup_watchdog(); } void tick_nohz_stop_idle(int cpu) @@ -195,7 +195,7 @@ u64 get_cpu_idle_time_us(int cpu, u64 *last_update_time) * Called either from the idle loop or from irq_exit() when an idle period was * just interrupted by an interrupt which did not cause a reschedule. */ -void tick_nohz_stop_sched_tick(void) +void tick_nohz_stop_sched_tick(int inidle) { unsigned long seq, last_jiffies, next_jiffies, delta_jiffies, flags; struct tick_sched *ts; @@ -224,6 +224,11 @@ void tick_nohz_stop_sched_tick(void) if (unlikely(ts->nohz_mode == NOHZ_MODE_INACTIVE)) goto end; + if (!inidle && !ts->inidle) + goto end; + + ts->inidle = 1; + if (need_resched()) goto end; @@ -373,11 +378,14 @@ void tick_nohz_restart_sched_tick(void) local_irq_disable(); tick_nohz_stop_idle(cpu); - if (!ts->tick_stopped) { + if (!ts->inidle || !ts->tick_stopped) { + ts->inidle = 0; local_irq_enable(); return; } + ts->inidle = 0; + rcu_exit_nohz(); /* Update jiffies first */ |