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[RFC,v5,10/14] sched: init this_load to max in find_idlest_group

Message ID 1382097147-30088-10-git-send-email-vincent.guittot@linaro.org
State New
Headers show

Commit Message

Vincent Guittot Oct. 18, 2013, 11:52 a.m. UTC 
Init this_load to max value instead of 0 in find_idlest_group.
If the local group is skipped because it doesn't have allowed CPUs, this_load
stays to 0,  no idlest group will be returned and the selected CPU will be a
not allowed one (which will be replaced in select_fallback_rq by a random
one). With a default value set to max, we will use the idlest group even if we
skip the local_group.

Signed-off-by: Vincent Guittot <vincent.guittot@linaro.org>
---
 kernel/sched/fair.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index f9b03c1..2d9f782 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -3532,7 +3532,7 @@  find_idlest_group(struct sched_domain *sd, struct task_struct *p,
 		  int this_cpu, int sd_flag)
 {
 	struct sched_group *idlest = NULL, *group = sd->groups;
-	unsigned long min_load = ULONG_MAX, this_load = 0;
+	unsigned long min_load = ULONG_MAX, this_load = ULONG_MAX;
 	int load_idx = sd->forkexec_idx;
 	int imbalance = 100 + (sd->imbalance_pct-100)/2;