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Date:	Fri,  2 Oct 2015 07:48:25 +0530
From:	Srikar Dronamraju <>
To:	Ingo Molnar <>,
	Peter Zijlstra <>
	Rik van Riel <>, Mel Gorman <>
Subject: [PATCH] sched: Fix task_tick_fair from disabling numa_balancing

If static branch sched_numa_balancing is enabled, it should kickstart
numa_balancing through task_tick_numa(). However Commit 2a1ed24
("sched/numa: Convert sched_numa_balancing to a static_branch")
erroneously disables this.

Fix this anomaly by enabling task_tick_numa when static branch
sched_numa_balancing is enabled.

Signed-off-by: Srikar Dronamraju <>
 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 4df37a4..3bdc3da 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -7881,7 +7881,7 @@ static void task_tick_fair(struct rq *rq, struct task_struct *curr, int queued)
 		entity_tick(cfs_rq, se, queued);
-	if (!static_branch_unlikely(&sched_numa_balancing))
+	if (static_branch_unlikely(&sched_numa_balancing))
 		task_tick_numa(rq, curr);

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