linux-kernel - [PATCH 270/270] Revert "sched: Add missing call to calc_load_exit

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Date:	Mon, 26 Nov 2012 14:59:20 -0200
From:	Herton Ronaldo Krzesinski <herton.krzesinski@...onical.com>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org,
	kernel-team@...ts.ubuntu.com
Cc:	Huacai Chen <chenhc@...ote.com>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Jonathan Nieder <jrnieder@...il.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Charles Wang <muming.wq@...bao.com>,
	Ingo Molnar <mingo@...nel.org>,
	Herton Ronaldo Krzesinski <herton.krzesinski@...onical.com>
Subject: [PATCH 270/270] Revert "sched: Add missing call to calc_load_exit_idle()"

3.5.7u1 -stable review patch.  If anyone has any objections, please let me know.

------------------

From: Herton Ronaldo Krzesinski <herton.krzesinski@...onical.com>

This reverts commit 900404e5d201d0a6d2806f615b41e939713d55db on 3.5,
which is commit 749c8814f08f12baa4a9c2812a7c6ede7d69507d upstream.

The change was originally intended to fix a mismerge in 3.6. The 3.5
stable branch was unaffected by the issue, as reported by Huacai Chen on
stable mailing list (on the thread 'Seems like "sched: Add missing call
to calc_load_exit_idle()" should be reverted in 3.5 branch').

As concluded by Peter Zijlstra:
"(...) You are right, v3.5.5 has one calc_load_exit_idle() too many, the
one in tick_nohz_update_jiffies() needs to go. (...)"

Cc: Huacai Chen <chenhc@...ote.com>
Cc: Peter Zijlstra <a.p.zijlstra@...llo.nl>
Cc: Jonathan Nieder <jrnieder@...il.com>
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: Charles Wang <muming.wq@...bao.com>
Cc: Ingo Molnar <mingo@...nel.org>
Signed-off-by: Herton Ronaldo Krzesinski <herton.krzesinski@...onical.com>
---
 kernel/time/tick-sched.c |    1 -
 1 file changed, 1 deletion(-)

diff --git a/kernel/time/tick-sched.c b/kernel/time/tick-sched.c
index a057ed4..4a08472 100644
--- a/kernel/time/tick-sched.c
+++ b/kernel/time/tick-sched.c
@@ -145,7 +145,6 @@ static void tick_nohz_update_jiffies(ktime_t now)
 	tick_do_update_jiffies64(now);
 	local_irq_restore(flags);
 
-	calc_load_exit_idle();
 	touch_softlockup_watchdog();
 }
 
-- 
1.7.9.5

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