From: Arnd Bergmann <arnd@arndb.de>
To: linux-kernel@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org, Arnd Bergmann <arnd@arndb.de>,
        Peter Boonstoppel <pboonstoppel@nvidia.com>,
        Peter Zijlstra <a.p.zijlstra@chello.nl>, Paul Turner <pjt@google.com>,
        Ingo Molnar <mingo@kernel.org>
Subject: [PATCH 4/8] sched: warnings in kernel/sched/fair.c
Date: Tue,  6 Nov 2012 22:55:29 +0100
Message-Id: <1352238933-4886-5-git-send-email-arnd@arndb.de>
In-Reply-To: <1352238933-4886-1-git-send-email-arnd@arndb.de>
References: <1352238933-4886-1-git-send-email-arnd@arndb.de>
Sender: linux-kernel-owner@vger.kernel.org
Content-Length: 1454
Lines: 41

a4c96ae319 "sched: Unthrottle rt runqueues in __disable_runtime()"
turned the unthrottle_offline_cfs_rqs function into a static symbol,
which now triggers a warning about it being potentially unused:

kernel/sched/fair.c:2055:13: warning: 'unthrottle_offline_cfs_rqs' defined but not used [-Wunused-function]

Marking it __maybe_unused shuts up the gcc warning and lets the
compiler safely drop the function body when it's not being used.

To reproduce, build the ARM bcm2835_defconfig.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Peter Boonstoppel <pboonstoppel@nvidia.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Turner <pjt@google.com>
Cc: Ingo Molnar <mingo@kernel.org>
---
 kernel/sched/fair.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index 6b800a1..9f52728 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -2052,7 +2052,7 @@ static void destroy_cfs_bandwidth(struct cfs_bandwidth *cfs_b)
 	hrtimer_cancel(&cfs_b->slack_timer);
 }
 
-static void unthrottle_offline_cfs_rqs(struct rq *rq)
+static void __maybe_unused unthrottle_offline_cfs_rqs(struct rq *rq)
 {
 	struct cfs_rq *cfs_rq;
 
-- 
1.7.10

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