Commit-ID: 0c9ecd655dba8d6b16947be2a900d9735254c905
Gitweb: https://git.kernel.org/tip/0c9ecd655dba8d6b16947be2a900d9735254c905
Author: Vincent Guittot <vincent.guittot@xxxxxxxxxx>
AuthorDate: Fri, 14 Dec 2018 17:01:56 +0100
Committer: Ingo Molnar <mingo@xxxxxxxxxx>
CommitDate: Mon, 21 Jan 2019 14:40:47 +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
|