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alarmtimer: Implement try_to_cancel callback 

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/20170530211657.670026824@linutronix.de
This commit is contained in:
Thomas Gleixner 2017-05-30 23:15:57 +02:00
parent d653d8457c
commit e344c9e76b
1 changed files with 10 additions and 0 deletions
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10
kernel/time/alarmtimer.c
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@ -572,6 +572,15 @@ static ktime_t alarm_timer_remaining(struct k_itimer *timr, ktime_t now)
return ktime_sub(now, alarm->node.expires);
}
/**
* alarm_timer_try_to_cancel - Posix timer callback to cancel a timer
* @timr: Pointer to the posixtimer data struct
*/
static int alarm_timer_try_to_cancel(struct k_itimer *timr)
{
return alarm_try_to_cancel(&timr->it.alarm.alarmtimer);
}
/**
* alarm_clock_getres - posix getres interface
* @which_clock: clockid
@ -902,6 +911,7 @@ const struct k_clock alarm_clock = {
.timer_rearm = alarm_timer_rearm,
.timer_forward = alarm_timer_forward,
.timer_remaining = alarm_timer_remaining,
.timer_try_to_cancel = alarm_timer_try_to_cancel,
.nsleep = alarm_timer_nsleep,
};
#endif /* CONFIG_POSIX_TIMERS */