linux-kernel - [PATCH] idle_at_tick is only used when CONFIG

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Message-Id: <1234541857-8274-1-git-send-email-henrik@austad.us>
Date:	Fri, 13 Feb 2009 17:17:37 +0100
From:	Henrik Austad <henrik@...tad.us>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	Peter Zijlstra <peterz@...radead.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Henrik Austad <henrik@...tad.us>
Subject: [PATCH] idle_at_tick is only used when CONFIG_SMP is set

The idle_at_tick in struct rq is only used in SMP settings
and it does not make sense to have this in the rq in an UP setup.

This will also increase packing of rq.

Signed-off-by: Henrik Austad <henrik@...tad.us>
---
 kernel/sched.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/kernel/sched.c b/kernel/sched.c
index c1d0ed3..4404e47 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -549,7 +549,6 @@ struct rq {
 	unsigned long nr_running;
 	#define CPU_LOAD_IDX_MAX 5
 	unsigned long cpu_load[CPU_LOAD_IDX_MAX];
-	unsigned char idle_at_tick;
 #ifdef CONFIG_NO_HZ
 	unsigned long last_tick_seen;
 	unsigned char in_nohz_recently;
@@ -590,6 +589,7 @@ struct rq {
 	struct root_domain *rd;
 	struct sched_domain *sd;
 
+	unsigned char idle_at_tick;
 	/* For active balancing */
 	int active_balance;
 	int push_cpu;
-- 
1.6.1.rc2

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