Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 084ec9e5 authored by Joonwoo Park's avatar Joonwoo Park
Browse files

sched: EAS: bias towards prev CPU 



Make task placement algorithm to bias towards previous CPU to reduce
migrations and cache bouncing.

Change-Id: I403584cb96805e9516fbdad3aeed9fbedca41b64
Signed-off-by: default avatarJoonwoo Park <joonwoop@codeaurora.org>
parent 6939ca6c

kernel/sched/fair.c

+9 −1
Original line number Diff line number Diff line
@@ -6775,7 +6775,15 @@ static int energy_aware_wake_cpu(struct task_struct *p, int target, int sync) 
						targeted_cpus = 1;

					} else if (cpu_idle_idx ==

						   min_idle_idx &&

						target_cpu_util > new_util) {

						   (target_cpu_util >

						    new_util ||

						    (target_cpu_util ==

						     new_util &&

						     (i == task_cpu(p) ||

						      (target_cpu !=

						       task_cpu(p) &&

						       target_cpu_new_util_cum >

						       new_util_cum))))) {

						min_idle_idx_cpu = i;

						target_cpu = i;

						target_cpu_util = new_util;