[PATCH 7/8] sched: change active_load_balance_cpu_stop to use h_nr_running

[Lei Wen]

We should only avoid do the active load balance when there is no
cfs type task. If just use rq->nr_running, it is possible for the
source cpu has multiple rt task, while zero cfs task, so that it
would confuse the active load balance function that try to move,
but find no task it could move.

Signed-off-by: Lei Wen <leiwen@xxxxxxxxxxx>
---
 kernel/sched/fair.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index 3656603..4c96124 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -5349,7 +5349,7 @@ static int active_load_balance_cpu_stop(void *data)
 		goto out_unlock;
 
 	/* Is there any task to move? */
-	if (busiest_rq->nr_running <= 1)
+	if (busiest_rq->cfs.h_nr_running == 0)
 		goto out_unlock;
 
 	/*
-- 
1.7.5.4

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