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Commit 781978e6 authored by Joonwoo Park's avatar Joonwoo Park Committed by Thomas Gleixner
Browse files

timer: Use timer->base for flag checks 



At present, internal_add_timer() examines flags with 'base' which doesn't
contain flags.  Examine with 'timer->base' to avoid unnecessary waking up
of nohz CPU when timer base has TIMER_DEFERRABLE set.

Signed-off-by: default avatarJoonwoo Park <joonwoop@codeaurora.org>
Cc: sboyd@codeaurora.org
Cc: skannan@codeaurora.org
Cc: John Stultz <john.stultz@linaro.org>
Link: http://lkml.kernel.org/r/1430187709-21087-1-git-send-email-joonwoop@codeaurora.org


Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
parent 9fa8cc0a

kernel/time/timer.c

+1 −1
Original line number Diff line number Diff line
@@ -436,7 +436,7 @@ static void internal_add_timer(struct tvec_base *base, struct timer_list *timer) 
	 * require special care against races with idle_cpu(), lets deal

	 * with that later.

	 */

	if (!tbase_get_deferrable(base) || tick_nohz_full_cpu(base->cpu))

	if (!tbase_get_deferrable(timer->base) || tick_nohz_full_cpu(base->cpu))

		wake_up_nohz_cpu(base->cpu);

}