Commit-ID: d653d8457c76da11f047af1f66256ac9b8421b69 Gitweb: http://git.kernel.org/tip/d653d8457c76da11f047af1f66256ac9b8421b69 Author: Thomas Gleixner <t...@linutronix.de> AuthorDate: Tue, 30 May 2017 23:15:56 +0200 Committer: Thomas Gleixner <t...@linutronix.de> CommitDate: Sun, 4 Jun 2017 15:40:31 +0200
alarmtimer: Implement remaining callback Preparatory change to utilize the common posix timer mechanisms. Signed-off-by: Thomas Gleixner <t...@linutronix.de> Cc: Peter Zijlstra <pet...@infradead.org> Cc: John Stultz <john.stu...@linaro.org> Link: http://lkml.kernel.org/r/20170530211657.592676...@linutronix.de --- kernel/time/alarmtimer.c | 31 ++++++++++++++++++++++--------- 1 file changed, 22 insertions(+), 9 deletions(-) diff --git a/kernel/time/alarmtimer.c b/kernel/time/alarmtimer.c index 6082cf1..02ddc40 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 */
