[patch 22/26] alarmtimer: Implement forward callback

Thomas Gleixner
2017-05-30T21:42:32Z

[-- Attachment #1: alarmtimer--Implement-forward-callback.patch --]
[-- Type: text/plain, Size: 1076 bytes --]

Preparatory change to utilize the common posix timer mechanisms.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---
kernel/time/alarmtimer.c | 13 +++++++++++++
1 file changed, 13 insertions(+)

--- a/kernel/time/alarmtimer.c
+++ b/kernel/time/alarmtimer.c
@@ -549,6 +549,18 @@ static void alarm_timer_rearm(struct k_i
}

/**
+ * 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
* @tp: timespec to fill
@@ -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 */