[tip:sched/core] sched/numa: Check sched_feat(NUMA) in migrate_improves_locality()

[tip-bot for bsegall@xxxxxxxxxx]

Commit-ID:  c79ca895092dba6995fc78db20649ab55ce9149d
Gitweb:     http://git.kernel.org/tip/c79ca895092dba6995fc78db20649ab55ce9149d
Author:     bsegall@xxxxxxxxxx <bsegall@xxxxxxxxxx>
AuthorDate: Tue, 16 Jun 2015 12:18:21 -0700
Committer:  Ingo Molnar <mingo@xxxxxxxxxx>
CommitDate: Mon, 6 Jul 2015 15:03:14 +0200

sched/numa: Check sched_feat(NUMA) in migrate_improves_locality()

migrate_improves_locality checked sched_feat(NUMA_FAVOUR_HIGHER) but not
sched_feat(NUMA), so disabling just the NUMA feature would leave it
working off of old data.

Signed-off-by: Ben Segall <bsegall@xxxxxxxxxx>
Signed-off-by: Peter Zijlstra (Intel) <peterz@xxxxxxxxxxxxx>
Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Cc: Mel Gorman <mgorman@xxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Link: http://lkml.kernel.org/r/xm26si9rtqbm.fsf@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx>
---
 kernel/sched/fair.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index d113c3b..98b2b96 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -5680,8 +5680,8 @@ static bool migrate_improves_locality(struct task_struct *p, struct lb_env *env)
 	unsigned long src_faults, dst_faults;
 	int src_nid, dst_nid;
 
-	if (!sched_feat(NUMA_FAVOUR_HIGHER) || !p->numa_faults ||
-	    !(env->sd->flags & SD_NUMA)) {
+	if (!sched_feat(NUMA) || !sched_feat(NUMA_FAVOUR_HIGHER) ||
+	    !p->numa_faults || !(env->sd->flags & SD_NUMA)) {
 		return false;
 	}
 
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