From e7561f1633ac735df48c55ad09a2530e9ab9fab1 Mon Sep 17 00:00:00 2001
From: Thomas Gleixner <tglx@linutronix.de>
Date: Tue, 30 May 2017 23:15:55 +0200
Subject: [PATCH] alarmtimer: Implement forward 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/20170530211657.513694229@linutronix.de
---
kernel/time/alarmtimer.c | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/kernel/time/alarmtimer.c b/kernel/time/alarmtimer.c
index be85e3cbfe1b0..6082cf1af876a 100644
--- a/kernel/time/alarmtimer.c
+++ b/kernel/time/alarmtimer.c
@@ -548,6 +548,18 @@ static void alarm_timer_rearm(struct k_itimer *timr)
alarm_start(alarm, alarm->node.expires);
}
+/**
+ * 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
@@ -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 */
--
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