[PATCH] alarmtimer: Trace the requested expiry when starting an alarm

[PATCH] alarmtimer: Trace the requested expiry when starting an alarm

[Avi Weiss]

alarm_start_timer() traces alarm->node.expires before updating it,
so alarmtimer_start reports the previous deadline on rearm.

Move the tracepoint after assigning the new expiry.

Fixes: 183d00b72713 ("alarmtimer: Provide alarm_start_timer()")
Signed-off-by: Avi Weiss <thnkslprpt@gmail.com>
---
 kernel/time/alarmtimer.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/kernel/time/alarmtimer.c b/kernel/time/alarmtimer.c
index ea5be5870e515..f6d2183aa4e3c 100644
--- a/kernel/time/alarmtimer.c
+++ b/kernel/time/alarmtimer.c
@@ -351,10 +351,9 @@ bool alarm_start_timer(struct alarm *alarm, ktime_t expires, bool relative)
 	if (relative)
 		expires = ktime_add_safe(expires, base->get_ktime());
 
-	trace_alarmtimer_start(alarm, base->get_ktime());
-
 	guard(spinlock_irqsave)(&base->lock);
 	alarm->node.expires = expires;
+	trace_alarmtimer_start(alarm, base->get_ktime());
 	alarmtimer_enqueue(base, alarm);
 	if (!hrtimer_start_range_ns_user(&alarm->timer, expires, 0, HRTIMER_MODE_ABS)) {
 		alarmtimer_dequeue(base, alarm);

base-commit: cbbddb6b08cc9900a87cccaa9b22bbe06aa4f50a
-- 
2.43.0