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Commit 7293b8b6 authored by Pavankumar Kondeti's avatar Pavankumar Kondeti
Browse files

sched/fair: Select the least loaded CPU for SMP under sched boost 



When placement boost is active, select the least loaded CPU across
all CPU groups/clusters for the best performance.

Change-Id: Ieb0bfcfe6989a4fae4b54cf8ce4d679335585f36
Signed-off-by: default avatarPavankumar Kondeti <pkondeti@codeaurora.org>
parent 0a713078

kernel/sched/fair.c

+8 −5
Original line number Diff line number Diff line
@@ -7093,11 +7093,14 @@ static int energy_aware_wake_cpu(struct task_struct *p, int target, int sync) 


	/*

	 * If we don't find a CPU that fits this task without

	 * increasing OPP above sched_smp_overlap_capacity,

	 * expand the search to the other groups on a SMP system.

	 */

	if (!sysctl_sched_is_big_little && target_cpu == -1 &&

			min_util_cpu_util_cum > sched_smp_overlap_capacity) {

	 * increasing OPP above sched_smp_overlap_capacity or

	 * when placement boost is active, expand the search to

	 * the other groups on a SMP system.

	 */

	if (!sysctl_sched_is_big_little &&

			(placement_boost == SCHED_BOOST_ON_ALL ||

			(target_cpu == -1 && min_util_cpu_util_cum >

					     sched_smp_overlap_capacity))) {

		if (sg_target->next != start_sg) {

			sg_target = sg_target->next;

			goto next_sg;