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| author | Thomas Gleixner <tglx@linutronix.de> | 2017-05-30 23:15:56 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2017-06-04 15:40:31 +0200 |
| commit | d653d8457c76da11f047af1f66256ac9b8421b69 (patch) | |
| tree | 2eeb831135096f08e0766916d04445d26c68df79 /kernel/time/alarmtimer.c | |
| parent | e7561f1633ac735df48c55ad09a2530e9ab9fab1 (diff) | |
| download | linux-d653d8457c76da11f047af1f66256ac9b8421b69.tar.gz | |
alarmtimer: Implement remaining 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/20170530211657.592676753@linutronix.de
Diffstat (limited to 'kernel/time/alarmtimer.c')
| -rw-r--r-- | kernel/time/alarmtimer.c | 31 |
1 files changed, 22 insertions, 9 deletions
diff --git a/kernel/time/alarmtimer.c b/kernel/time/alarmtimer.c index 6082cf1af876ad..02ddc40f19fe9e 100644 --- a/kernel/time/alarmtimer.c +++ b/kernel/time/alarmtimer.c @@ -561,6 +561,18 @@ static int alarm_timer_forward(struct k_itimer *timr, ktime_t now) } /** + * alarm_timer_remaining - Posix timer callback to retrieve remaining time + * @timr: Pointer to the posixtimer data struct + * @now: Current time to calculate against + */ +static ktime_t alarm_timer_remaining(struct k_itimer *timr, ktime_t now) +{ + struct alarm *alarm = &timr->it.alarm.alarmtimer; + + return ktime_sub(now, alarm->node.expires); +} + +/** * alarm_clock_getres - posix getres interface * @which_clock: clockid * @tp: timespec to fill @@ -881,15 +893,16 @@ out: } const struct k_clock alarm_clock = { - .clock_getres = alarm_clock_getres, - .clock_get = alarm_clock_get, - .timer_create = alarm_timer_create, - .timer_set = alarm_timer_set, - .timer_del = alarm_timer_del, - .timer_get = alarm_timer_get, - .timer_rearm = alarm_timer_rearm, - .timer_forward = alarm_timer_forward, - .nsleep = alarm_timer_nsleep, + .clock_getres = alarm_clock_getres, + .clock_get = alarm_clock_get, + .timer_create = alarm_timer_create, + .timer_set = alarm_timer_set, + .timer_del = alarm_timer_del, + .timer_get = alarm_timer_get, + .timer_rearm = alarm_timer_rearm, + .timer_forward = alarm_timer_forward, + .timer_remaining = alarm_timer_remaining, + .nsleep = alarm_timer_nsleep, }; #endif /* CONFIG_POSIX_TIMERS */ |