diff options
Diffstat (limited to 'kernel/time/tick-sched.c')
| -rw-r--r-- | kernel/time/tick-sched.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/kernel/time/tick-sched.c b/kernel/time/tick-sched.c index 52db9e3c526e..b416995b9757 100644 --- a/kernel/time/tick-sched.c +++ b/kernel/time/tick-sched.c | |||
| @@ -546,6 +546,7 @@ void tick_setup_sched_timer(void) | |||
| 546 | { | 546 | { |
| 547 | struct tick_sched *ts = &__get_cpu_var(tick_cpu_sched); | 547 | struct tick_sched *ts = &__get_cpu_var(tick_cpu_sched); |
| 548 | ktime_t now = ktime_get(); | 548 | ktime_t now = ktime_get(); |
| 549 | u64 offset; | ||
| 549 | 550 | ||
| 550 | /* | 551 | /* |
| 551 | * Emulate tick processing via per-CPU hrtimers: | 552 | * Emulate tick processing via per-CPU hrtimers: |
| @@ -554,8 +555,12 @@ void tick_setup_sched_timer(void) | |||
| 554 | ts->sched_timer.function = tick_sched_timer; | 555 | ts->sched_timer.function = tick_sched_timer; |
| 555 | ts->sched_timer.cb_mode = HRTIMER_CB_IRQSAFE_NO_SOFTIRQ; | 556 | ts->sched_timer.cb_mode = HRTIMER_CB_IRQSAFE_NO_SOFTIRQ; |
| 556 | 557 | ||
| 557 | /* Get the next period */ | 558 | /* Get the next period (per cpu) */ |
| 558 | ts->sched_timer.expires = tick_init_jiffy_update(); | 559 | ts->sched_timer.expires = tick_init_jiffy_update(); |
| 560 | offset = ktime_to_ns(tick_period) >> 1; | ||
| 561 | do_div(offset, NR_CPUS); | ||
| 562 | offset *= smp_processor_id(); | ||
| 563 | ts->sched_timer.expires = ktime_add_ns(ts->sched_timer.expires, offset); | ||
| 559 | 564 | ||
| 560 | for (;;) { | 565 | for (;;) { |
| 561 | hrtimer_forward(&ts->sched_timer, now, tick_period); | 566 | hrtimer_forward(&ts->sched_timer, now, tick_period); |
