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alarmtimer: Implement forward callback

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Preparatory change to utilize the common posix timer mechanisms.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: John Stultz <john.stultz@linaro.org>
Link: http://lkml.kernel.org/r/20170530211657.513694229@linutronix.de
This commit is contained in:
Thomas Gleixner 2017-05-30 23:15:55 +02:00
parent b3db80f77a
commit e7561f1633
1 changed files with 13 additions and 0 deletions
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13
kernel/time/alarmtimer.c
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@ -548,6 +548,18 @@ static void alarm_timer_rearm(struct k_itimer *timr)
alarm_start(alarm, alarm->node.expires);
}
/**
* alarm_timer_forward - Posix timer callback for forwarding timer
* @timr: Pointer to the posixtimer data struct
* @now: Current time to forward the timer against
*/
static int alarm_timer_forward(struct k_itimer *timr, ktime_t now)
{
struct alarm *alarm = &timr->it.alarm.alarmtimer;
return (int) alarm_forward(alarm, timr->it_interval, now);
}
/**
* alarm_clock_getres - posix getres interface
* @which_clock: clockid
@ -876,6 +888,7 @@ const struct k_clock alarm_clock = {
.timer_del = alarm_timer_del,
.timer_get = alarm_timer_get,
.timer_rearm = alarm_timer_rearm,
.timer_forward = alarm_timer_forward,
.nsleep = alarm_timer_nsleep,
};
#endif /* CONFIG_POSIX_TIMERS */