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alarmtimers: Push rearming peroidic timers down into alamrtimer handler 

This patch pushes the periodic alarmtimer re-arming down into the alarmtimer
handler, mimicking how hrtimers handle this.

CC: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: John Stultz <john.stultz@linaro.org>
This commit is contained in:
John Stultz 2011-08-10 11:08:07 -07:00
parent 4b41308d2d
commit 54da23b720
1 changed files with 13 additions and 7 deletions
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20
kernel/time/alarmtimer.c
View File

@ -174,6 +174,7 @@ static enum hrtimer_restart alarmtimer_fired(struct hrtimer *timer)
unsigned long flags;
ktime_t now;
int ret = HRTIMER_NORESTART;
int restart = ALARMTIMER_NORESTART;
spin_lock_irqsave(&base->lock, flags);
now = base->gettime();
@ -188,16 +189,16 @@ static enum hrtimer_restart alarmtimer_fired(struct hrtimer *timer)
timerqueue_del(&base->timerqueue, &alarm->node);
alarm->enabled = 0;
/* Re-add periodic timers */
if (alarm->period.tv64) {
alarm->node.expires = ktime_add(expired, alarm->period);
spin_unlock_irqrestore(&base->lock, flags);
if (alarm->function)
restart = alarm->function(alarm, now);
spin_lock_irqsave(&base->lock, flags);
if (restart != ALARMTIMER_NORESTART) {
timerqueue_add(&base->timerqueue, &alarm->node);
alarm->enabled = 1;
}
spin_unlock_irqrestore(&base->lock, flags);
if (alarm->function)
alarm->function(alarm, now);
spin_lock_irqsave(&base->lock, flags);
}
if (next) {
@ -373,6 +374,11 @@ static enum alarmtimer_restart alarm_handle_timer(struct alarm *alarm,
if (posix_timer_event(ptr, 0) != 0)
ptr->it_overrun++;
/* Re-add periodic timers */
if (alarm->period.tv64) {
alarm->node.expires = ktime_add(now, alarm->period);
return ALARMTIMER_RESTART;
}
return ALARMTIMER_NORESTART;
}