linux-kernel - [PATCH] sched: Move level 'again' after get_cpu() in sched

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Date:	Tue, 12 Jan 2010 16:42:35 +0600
From:	Rakib Mullick <rakib.mullick@...il.com>
To:	LKML <linux-kernel@...r.kernel.org>
Cc:	Ingo Molnar <mingo@...e.hu>, Peter Zijlstra <peterz@...radead.org>
Subject: [PATCH] sched: Move level 'again' after get_cpu() in sched_exec.

            sched: move level again after get_cpu().

 We can get this_cpu by calling get_cpu() once and it remains
same. We don't need to call it again.

Signed-off-by: Rakib Mullick <rakib.mullick@...il.com>
---

--- linus/kernel/sched.c	2010-01-06 20:11:10.000000000 +0600
+++ rakib/kernel/sched.c	2010-01-12 16:01:54.000000000 +0600
@@ -3143,8 +3143,8 @@ void sched_exec(void)
 	unsigned long flags;
 	struct rq *rq;

-again:
 	this_cpu = get_cpu();
+again:
 	dest_cpu = select_task_rq(p, SD_BALANCE_EXEC, 0);
 	if (dest_cpu == this_cpu) {
 		put_cpu();
--
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