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Commit c726099e authored by Daniel Lezcano's avatar Daniel Lezcano Committed by Ingo Molnar
Browse files

sched: Factor out the on_null_domain() checks in trigger_load_balance() 



The test on_null_domain is done twice in the trigger_load_balance function.

Move the test at the begin of the function, so there is only one check.

Signed-off-by: default avatarDaniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: default avatarPeter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1389008085-9069-9-git-send-email-daniel.lezcano@linaro.org


Signed-off-by: default avatarIngo Molnar <mingo@kernel.org>
parent 208cb16b

kernel/sched/fair.c

+5 −3
Original line number Diff line number Diff line
@@ -6878,11 +6878,13 @@ static inline int on_null_domain(struct rq *rq) 
void trigger_load_balance(struct rq *rq)

{

	/* Don't need to rebalance while attached to NULL domain */

	if (time_after_eq(jiffies, rq->next_balance) &&

	    likely(!on_null_domain(rq)))

	if (unlikely(on_null_domain(rq)))

		return;



	if (time_after_eq(jiffies, rq->next_balance))

		raise_softirq(SCHED_SOFTIRQ);

#ifdef CONFIG_NO_HZ_COMMON

	if (nohz_kick_needed(rq) && likely(!on_null_domain(rq)))

	if (nohz_kick_needed(rq))

		nohz_balancer_kick();

#endif

}