linux-kernel - [PATCH v3 2/2] sched/core: Get rid of 'cpu' local variable in _

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Date:	Wed,  2 Mar 2016 12:53:32 +0100
From:	Alexander Gordeev <agordeev@...hat.com>
To:	linux-kernel@...r.kernel.org
Cc:	Alexander Gordeev <agordeev@...hat.com>,
	Oleg Nesterov <oleg@...hat.com>,
	Peter Zijlstra <peterz@...radead.org>
Subject: [PATCH v3 2/2] sched/core: Get rid of 'cpu' local variable in __schedule()

This update is a continuation of commit 3223d05 ("sched/core:
Remove dead statement in __schedule()") and completes the
removal of a dead code with a removal of an unnecessary 'cpu'
local variable - as it is only used to acquire the current
runqueue.

Cc: Oleg Nesterov <oleg@...hat.com>
Cc: Peter Zijlstra <peterz@...radead.org>
Signed-off-by: Alexander Gordeev <agordeev@...hat.com>
---
 kernel/sched/core.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index 735e87c..75e62ef 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -3131,10 +3131,8 @@ static void __sched notrace __schedule(bool preempt)
 	struct task_struct *prev, *next;
 	unsigned long *switch_count;
 	struct rq *rq;
-	int cpu;
 
-	cpu = smp_processor_id();
-	rq = cpu_rq(cpu);
+	rq = this_rq();
 	prev = rq->curr;
 
 	/*
-- 
1.8.3.1