Commit 71fed982 authored Aug 23, 2019 by Sebastian Andrzej Siewior Committed by Thomas Gleixner Aug 28, 2019

tick: Mark sched_timer to expire in hard interrupt context

sched_timer must be initialized with the _HARD mode suffix to ensure expiry
in hard interrupt context on RT.

The previous conversion to HARD expiry mode missed on one instance in
tick_nohz_switch_to_nohz(). Fix it up.

Fixes: 902a9f9c ("tick: Mark tick related hrtimers to expiry in hard interrupt context")
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lkml.kernel.org/r/20190823113845.12125-3-bigeasy@linutronix.de

parent a67e4082

kernel/time/tick-sched.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -1233,7 +1233,7 @@ static void tick_nohz_switch_to_nohz(void)
		* Recycle the hrtimer in ts, so we can share the
		* hrtimer_forward with the highres code.
		*/
		hrtimer_init(&ts->sched_timer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS);
		hrtimer_init(&ts->sched_timer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS_HARD);
		/* Get the next period */
		next = tick_init_jiffy_update();