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    Subject[tip:timers/core] alarmtimer: Implement timer_rearm() callback
    Commit-ID:  b3db80f77a95a45dbb2136f7b2a364dc797ea914
    Gitweb: http://git.kernel.org/tip/b3db80f77a95a45dbb2136f7b2a364dc797ea914
    Author: Thomas Gleixner <tglx@linutronix.de>
    AuthorDate: Tue, 30 May 2017 23:15:54 +0200
    Committer: Thomas Gleixner <tglx@linutronix.de>
    CommitDate: Sun, 4 Jun 2017 15:40:30 +0200

    alarmtimer: Implement timer_rearm() 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/20170530211657.434598989@linutronix.de

    ---
    kernel/time/alarmtimer.c | 15 ++++++++++++++-
    1 file changed, 14 insertions(+), 1 deletion(-)

    diff --git a/kernel/time/alarmtimer.c b/kernel/time/alarmtimer.c
    index 5b8cf4b..be85e3c 100644
    --- a/kernel/time/alarmtimer.c
    +++ b/kernel/time/alarmtimer.c
    @@ -537,6 +537,18 @@ static enum alarmtimer_restart alarm_handle_timer(struct alarm *alarm,
    }

    /**
    + * alarm_timer_rearm - Posix timer callback for rearming timer
    + * @timr: Pointer to the posixtimer data struct
    + */
    +static void alarm_timer_rearm(struct k_itimer *timr)
    +{
    + struct alarm *alarm = &timr->it.alarm.alarmtimer;
    +
    + timr->it_overrun += alarm_forward_now(alarm, timr->it_interval);
    + alarm_start(alarm, alarm->node.expires);
    +}
    +
    +/**
    * alarm_clock_getres - posix getres interface
    * @which_clock: clockid
    * @tp: timespec to fill
    @@ -594,7 +606,7 @@ static int alarm_timer_create(struct k_itimer *new_timer)

    /**
    * alarm_timer_get - posix timer_get interface
    - * @new_timer: k_itimer pointer
    + * @timr: k_itimer pointer
    * @cur_setting: itimerspec data to fill
    *
    * Copies out the current itimerspec data
    @@ -863,6 +875,7 @@ const struct k_clock alarm_clock = {
    .timer_set = alarm_timer_set,
    .timer_del = alarm_timer_del,
    .timer_get = alarm_timer_get,
    + .timer_rearm = alarm_timer_rearm,
    .nsleep = alarm_timer_nsleep,
    };
    #endif /* CONFIG_POSIX_TIMERS */
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