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Commit 0e07086f authored by Linux Build Service Account's avatar Linux Build Service Account Committed by Gerrit - the friendly Code Review server
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Merge "sched/fair: Avoid unnecessary active load balance"

parents 448ea24a 6f701bbe

kernel/sched/fair.c

+2 −0
Original line number Diff line number Diff line
@@ -10011,8 +10011,10 @@ static int need_active_balance(struct lb_env *env) 
	 * It's worth migrating the task if the src_cpu's capacity is reduced

	 * because of other sched_class or IRQs if more capacity stays

	 * available on dst_cpu.

	 * Avoid pulling the CFS task if it is the only task running.

	 */

	if ((env->idle != CPU_NOT_IDLE) &&

	    (env->src_rq->nr_running > 1) &&

	    (env->src_rq->cfs.h_nr_running == 1)) {

		if ((check_cpu_capacity(env->src_rq, sd)) &&

		    (capacity_of(env->src_cpu)*sd->imbalance_pct < capacity_of(env->dst_cpu)*100))