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From: tip-bot for Byungchul Park <tipbot@zytor.com>
To: linux-tip-commits@vger.kernel.org
Cc: byungchul.park@lge.com, peterz@infradead.org, tglx@linutronix.de,
	torvalds@linux-foundation.org, linux-kernel@vger.kernel.org,
	mingo@kernel.org, hpa@zytor.com
Subject: [tip:sched/core] sched/core: Remove dead statement in __schedule( )
Date: Wed, 17 Feb 2016 04:14:32 -0800	[thread overview]
Message-ID: <tip-3223d052b79eb9b620d170584c417d60a8bfd649@git.kernel.org> (raw)
In-Reply-To: <1455159578-17256-1-git-send-email-byungchul.park@lge.com>

Commit-ID:  3223d052b79eb9b620d170584c417d60a8bfd649
Gitweb:     http://git.kernel.org/tip/3223d052b79eb9b620d170584c417d60a8bfd649
Author:     Byungchul Park <byungchul.park@lge.com>
AuthorDate: Thu, 11 Feb 2016 11:59:38 +0900
Committer:  Ingo Molnar <mingo@kernel.org>
CommitDate: Wed, 17 Feb 2016 09:32:03 +0100

sched/core: Remove dead statement in __schedule()

Remove an unnecessary assignment of variable not used any more.

( This has no runtime effects as GCC is smart enough to optimize
  this out. )

Signed-off-by: Byungchul Park <byungchul.park@lge.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1455159578-17256-1-git-send-email-byungchul.park@lge.com
[ Edited the changelog. ]
Signed-off-by: Ingo Molnar <mingo@kernel.org>
---
 kernel/sched/core.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index 7e548bd..87ca0be 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -3346,7 +3346,6 @@ static void __sched notrace __schedule(bool preempt)
 
 		trace_sched_switch(preempt, prev, next);
 		rq = context_switch(rq, prev, next); /* unlocks the rq */
-		cpu = cpu_of(rq);
 	} else {
 		lockdep_unpin_lock(&rq->lock);
 		raw_spin_unlock_irq(&rq->lock);

      parent reply	other threads:[~2016-02-17 12:15 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-02-11  2:59 [PATCH] sched: remove an unnecessary memory access, rq->cpu in __schedule() Byungchul Park
2016-02-17  8:31 ` Ingo Molnar
2016-02-17  8:48   ` Byungchul Park
2016-02-17 12:14 ` tip-bot for Byungchul Park [this message]

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