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-rw-r--r--kernel/time/tick-sched.c12
1 files changed, 11 insertions, 1 deletions
diff --git a/kernel/time/tick-sched.c b/kernel/time/tick-sched.c
index 0581c11fe6c6..727c1ae0517a 100644
--- a/kernel/time/tick-sched.c
+++ b/kernel/time/tick-sched.c
@@ -567,11 +567,21 @@ static void tick_nohz_switch_to_nohz(void)
567static void tick_nohz_kick_tick(int cpu) 567static void tick_nohz_kick_tick(int cpu)
568{ 568{
569 struct tick_sched *ts = &per_cpu(tick_cpu_sched, cpu); 569 struct tick_sched *ts = &per_cpu(tick_cpu_sched, cpu);
570 ktime_t delta, now;
570 571
571 if (!ts->tick_stopped) 572 if (!ts->tick_stopped)
572 return; 573 return;
573 574
574 tick_nohz_restart(ts, ktime_get()); 575 /*
576 * Do not touch the tick device, when the next expiry is either
577 * already reached or less/equal than the tick period.
578 */
579 now = ktime_get();
580 delta = ktime_sub(ts->sched_timer.expires, now);
581 if (delta.tv64 <= tick_period.tv64)
582 return;
583
584 tick_nohz_restart(ts, now);
575} 585}
576 586
577#else 587#else