[PATCH 11/18 v2] sched/fair: Support not wakeup case in select_idle_sibling

[Vincent Guittot]

With push callback mecanism, select_task_rq_fair can be called for a task
that is already enqueued. Task into account this case when choosing idle
CPU.

Signed-off-by: Vincent Guittot <vincent.guittot@xxxxxxxxxx>
---
 kernel/sched/fair.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index 6ed3e5bb7fd6..38eb80dbd1a4 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -7974,10 +7974,13 @@ static int choose_sched_idle_rq(struct rq *rq, struct task_struct *p)
 	return sched_idle_rq(rq) && !task_has_idle_policy(p);
 }
 
+static int idle_cpu_without(int cpu, struct task_struct *p);
+
 static int choose_idle_cpu(int cpu, struct task_struct *p)
 {
 	return available_idle_cpu(cpu) ||
-	       choose_sched_idle_rq(cpu_rq(cpu), p);
+	       choose_sched_idle_rq(cpu_rq(cpu), p) ||
+	       idle_cpu_without(cpu, p);
 }
 
 static void
-- 
2.53.0