linux-kernel - [PATCH RESEND] sched_rt: don't start timer when rt bandwidth disabled

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Message-ID: <49A586FE.8070604@ct.jp.nec.com>
Date:	Wed, 25 Feb 2009 09:59:26 -0800
From:	Hiroshi Shimamoto <h-shimamoto@...jp.nec.com>
To:	Ingo Molnar <mingo@...e.hu>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>
Cc:	linux-kernel@...r.kernel.org
Subject: [PATCH RESEND] sched_rt: don't start timer when rt bandwidth disabled

From: Hiroshi Shimamoto <h-shimamoto@...jp.nec.com>

Impact: fix incorrect condition check

No need to start rt bandwidth timer when rt bandwidth is disabled.
If this timer starts, it may stop at sched_rt_period_timer() on the first time.

Signed-off-by: Hiroshi Shimamoto <h-shimamoto@...jp.nec.com>
---
 kernel/sched.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/kernel/sched.c b/kernel/sched.c
index 4484f9c..9e49ac8 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -223,7 +223,7 @@ static void start_rt_bandwidth(struct rt_bandwidth *rt_b)
 {
 	ktime_t now;
 
-	if (rt_bandwidth_enabled() && rt_b->rt_runtime == RUNTIME_INF)
+	if (!rt_bandwidth_enabled() || rt_b->rt_runtime == RUNTIME_INF)
 		return;
 
 	if (hrtimer_active(&rt_b->rt_period_timer))
-- 
1.6.1.2

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