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[timer] make periodic timers more accurate

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This commit is contained in:
Michael Bishop
2021-11-12 18:54:07 -04:00
committed by Travis Geiselbrecht
parent ff0f09ae4d
commit 4e54f0fedc
1 changed files with 4 additions and 1 deletions
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5
kernel/timer.c
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@@ -244,7 +244,10 @@ static enum handler_return timer_tick(void *arg, lk_time_t now) {
*/ */
if (periodic && !list_in_list(&timer->node) && timer->periodic_time > 0) { if (periodic && !list_in_list(&timer->node) && timer->periodic_time > 0) {
LTRACEF("periodic timer, period %u\n", timer->periodic_time); LTRACEF("periodic timer, period %u\n", timer->periodic_time);
timer->scheduled_time = now + timer->periodic_time; timer->scheduled_time += timer->periodic_time;
if (unlikely(TIME_LT(timer->scheduled_time, now))) {
timer->scheduled_time = now + timer->periodic_time;
}
insert_timer_in_queue(cpu, timer); insert_timer_in_queue(cpu, timer);
} }
} }