linux-kernel - [tip:timers/urgent] tick-sched: Check tick_nohz_enabled in tick_nohz_switch_to

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Message-ID: <tip-27630532ef5ead28b98cfe28d8f95222ef91c2b7@git.kernel.org>
Date:	Tue, 15 Apr 2014 11:45:56 -0700
From:	tip-bot for Viresh Kumar <tipbot@...or.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, hpa@...or.com, mingo@...nel.org,
	viresh.kumar@...aro.org, tglx@...utronix.de
Subject: [tip:timers/urgent] tick-sched:
  Check tick_nohz_enabled in tick_nohz_switch_to_nohz()

Commit-ID:  27630532ef5ead28b98cfe28d8f95222ef91c2b7
Gitweb:     http://git.kernel.org/tip/27630532ef5ead28b98cfe28d8f95222ef91c2b7
Author:     Viresh Kumar <viresh.kumar@...aro.org>
AuthorDate: Tue, 15 Apr 2014 10:54:41 +0530
Committer:  Thomas Gleixner <tglx@...utronix.de>
CommitDate: Tue, 15 Apr 2014 20:26:58 +0200

tick-sched: Check tick_nohz_enabled in tick_nohz_switch_to_nohz()

Since commit d689fe222 (NOHZ: Check for nohz active instead of nohz
enabled) the tick_nohz_switch_to_nohz() function returns because it
checks for the tick_nohz_active flag. This can't be set, because the
function itself sets it.

Undo the change in tick_nohz_switch_to_nohz().

Signed-off-by: Viresh Kumar <viresh.kumar@...aro.org>
Cc: linaro-kernel@...ts.linaro.org
Cc: fweisbec@...il.com
Cc: Arvind.Chauhan@....com
Cc: linaro-networking@...aro.org
Cc: <stable@...r.kernel.org> # 3.13+
Link: http://lkml.kernel.org/r/40939c05f2d65d781b92b20302b02243d0654224.1397537987.git.viresh.kumar@linaro.org
Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
---
 kernel/time/tick-sched.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/time/tick-sched.c b/kernel/time/tick-sched.c
index e947d96..6558b7a 100644
--- a/kernel/time/tick-sched.c
+++ b/kernel/time/tick-sched.c
@@ -970,7 +970,7 @@ static void tick_nohz_switch_to_nohz(void)
 	struct tick_sched *ts = &__get_cpu_var(tick_cpu_sched);
 	ktime_t next;
 
-	if (!tick_nohz_active)
+	if (!tick_nohz_enabled)
 		return;
 
 	local_irq_disable();
--
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