linux-kernel - [PATCH 56/58] sched: Only define init_cfs_bandwidth stub when CONFIG_FAIR_GROUP

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Date:	Sun, 18 Nov 2012 21:28:35 -0800
From:	Josh Triplett <josh@...htriplett.org>
To:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Ingo Molnar <mingo@...hat.com>,
	Peter Zijlstra <peterz@...radead.org>,
	linux-kernel@...r.kernel.org
Cc:	Josh Triplett <josh@...htriplett.org>
Subject: [PATCH 56/58] sched: Only define init_cfs_bandwidth stub when CONFIG_FAIR_GROUP_SCHED=y

kernel/sched/fair.c defines a stub version of init_cfs_bandwidth when
CONFIG_CFS_BANDWIDTH=n.  A few other places in the scheduler call
init_cfs_bandwidth, but only when CONFIG_FAIR_GROUP_SCHED=y, and
kernel/sched/sched.h only prototypes init_cfs_bandwidth when
CONFIG_FAIR_GROUP_SCHED=y.  Wrap the stub in an ifdef
CONFIG_FAIR_GROUP_SCHED as well, to avoid defining it when not needed,
and to satisfy GCC (-Wmissing-prototypes) and Sparse (-Wdecl).

kernel/sched/fair.c:2098:6: warning: no previous prototype for ‘init_cfs_bandwidth’ [-Wmissing-prototypes]

Signed-off-by: Josh Triplett <josh@...htriplett.org>
---
 kernel/sched/fair.c |    3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index 7e29e80..0f03bf1 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -2095,9 +2095,8 @@ static inline int throttled_lb_pair(struct task_group *tg,
 	return 0;
 }
 
-void init_cfs_bandwidth(struct cfs_bandwidth *cfs_b) {}
-
 #ifdef CONFIG_FAIR_GROUP_SCHED
+void init_cfs_bandwidth(struct cfs_bandwidth *cfs_b) {}
 static void init_cfs_rq_runtime(struct cfs_rq *cfs_rq) {}
 #endif
 
-- 
1.7.10.4

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