linux-kernel - [tip:sched/urgent] sched: Use root_task_group_empty only with FAIR_GROUP

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Date:	Sun, 8 Nov 2009 13:07:09 GMT
From:	tip-bot for Cyrill Gorcunov <gorcunov@...nvz.org>
To:	linux-tip-commits@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, hpa@...or.com, mingo@...hat.com,
	gorcunov@...nvz.org, peterz@...radead.org, tglx@...utronix.de,
	mingo@...e.hu
Subject: [tip:sched/urgent] sched: Use root_task_group_empty only with FAIR_GROUP_SCHED

Commit-ID:  e9036b36eed4d3cdb33fa9cbcdd9888ae516889f
Gitweb:     http://git.kernel.org/tip/e9036b36eed4d3cdb33fa9cbcdd9888ae516889f
Author:     Cyrill Gorcunov <gorcunov@...nvz.org>
AuthorDate: Mon, 26 Oct 2009 22:24:14 +0300
Committer:  Ingo Molnar <mingo@...e.hu>
CommitDate: Sun, 8 Nov 2009 13:15:48 +0100

sched: Use root_task_group_empty only with FAIR_GROUP_SCHED

root_task_group_empty is used only with FAIR_GROUP_SCHED
so if we use other scheduler options we get:

  kernel/sched.c:314: warning: 'root_task_group_empty' defined but not used

So move CONFIG_FAIR_GROUP_SCHED up that it covers
root_task_group_empty().

Signed-off-by: Cyrill Gorcunov <gorcunov@...nvz.org>
Cc: Peter Zijlstra <peterz@...radead.org>
LKML-Reference: <20091026192414.GB5321@...ovo>
Signed-off-by: Ingo Molnar <mingo@...e.hu>
---
 kernel/sched.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/kernel/sched.c b/kernel/sched.c
index 7d7d5fc..3c11ae0 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -309,6 +309,8 @@ static DEFINE_PER_CPU_SHARED_ALIGNED(struct rt_rq, init_rt_rq);
  */
 static DEFINE_SPINLOCK(task_group_lock);
 
+#ifdef CONFIG_FAIR_GROUP_SCHED
+
 #ifdef CONFIG_SMP
 static int root_task_group_empty(void)
 {
@@ -316,7 +318,6 @@ static int root_task_group_empty(void)
 }
 #endif
 
-#ifdef CONFIG_FAIR_GROUP_SCHED
 #ifdef CONFIG_USER_SCHED
 # define INIT_TASK_GROUP_LOAD	(2*NICE_0_LOAD)
 #else /* !CONFIG_USER_SCHED */
--
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