From 6cb58195143b55d4c427d92f8425bec2b0d9c56c Mon Sep 17 00:00:00 2001
From: Ingo Molnar <mingo@elte.hu>
Date: Mon, 15 Oct 2007 17:00:04 +0200
Subject: sched: optimize vruntime based scheduling

optimize vruntime based scheduling.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Mike Galbraith <efault@gmx.de>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
---
 kernel/sched_fair.c | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'kernel/sched_fair.c')

diff --git a/kernel/sched_fair.c b/kernel/sched_fair.c
index a566a4558167..7041dc697855 100644
--- a/kernel/sched_fair.c
+++ b/kernel/sched_fair.c
@@ -336,6 +336,9 @@ __update_curr(struct cfs_rq *cfs_rq, struct sched_entity *curr,
 	}
 	curr->vruntime += delta_exec_weighted;
 
+	if (!sched_feat(FAIR_SLEEPERS))
+		return;
+
 	if (unlikely(!load))
 		return;
 
-- 
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