[tip:sched/core] sched/fair: Trigger asym_packing during idle load balance

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Commit-ID:  a062d16449c0d2e00d5a54123c9cfadea3f6c763
Gitweb:     https://git.kernel.org/tip/a062d16449c0d2e00d5a54123c9cfadea3f6c763
Author:     Vincent Guittot <vincent.guittot@xxxxxxxxxx>
AuthorDate: Fri, 14 Dec 2018 17:01:56 +0100
Committer:  Ingo Molnar <mingo@xxxxxxxxxx>
CommitDate: Sun, 27 Jan 2019 12:29:37 +0100

sched/fair: Trigger asym_packing during idle load balance

Newly idle load balancing is not always triggered when a CPU becomes idle.
This prevents the scheduler from getting a chance to migrate the task
for asym packing.

Enable active migration during idle load balance too.

Signed-off-by: Vincent Guittot <vincent.guittot@xxxxxxxxxx>
Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: valentin.schneider@xxxxxxx
Cc: linux-kernel@xxxxxxxxxxxxxxx
Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx>
---
 kernel/sched/fair.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index 3b61e19b504a..9693cf2ea954 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -8832,7 +8832,7 @@ static int need_active_balance(struct lb_env *env)
 {
 	struct sched_domain *sd = env->sd;
 
-	if (env->idle == CPU_NEWLY_IDLE) {
+	if (env->idle != CPU_NOT_IDLE) {
 
 		/*
 		 * ASYM_PACKING needs to force migrate tasks from busy but



[Index of Archives]     [Linux Stable Commits]     [Linux Stable Kernel]     [Linux Kernel]     [Linux USB Devel]     [Linux Video &Media]     [Linux Audio Users]     [Yosemite News]     [Linux SCSI]

  Powered by Linux