From: Fabio Estevam <fabio.estevam@freescale.com>
To: <akpm@linux-foundation.org>
Cc: <mingo@kernel.org>, <arnd@arndb.de>,
<linux-kernel@vger.kernel.org>, <a.p.zijlstra@chello.nl>,
<festevam@gmail.com>, Fabio Estevam <fabio.estevam@freescale.com>
Subject: [PATCH] sysctl: Fix 'defined but not used' warning
Date: Fri, 5 Oct 2012 12:57:48 -0300 [thread overview]
Message-ID: <1349452668-8601-1-git-send-email-fabio.estevam@freescale.com> (raw)
Since commit 4ae834f767(sched/numa: Implement NUMA home-node selection code)
building a kernel with CONFIG_SMP disabled causes the following warning:
kernel/sysctl.c:259:12: warning: 'min_sched_tunable_scaling' defined but not used [-Wunused-variable]
kernel/sysctl.c:260:12: warning: 'max_sched_tunable_scaling' defined but not used [-Wunused-variable]
Annotate theses variables as '__maybe_unused'.
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
---
kernel/sysctl.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index af25d0c..4bf02e4 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -256,8 +256,8 @@ static int min_sched_granularity_ns = 100000; /* 100 usecs */
static int max_sched_granularity_ns = NSEC_PER_SEC; /* 1 second */
static int min_wakeup_granularity_ns; /* 0 usecs */
static int max_wakeup_granularity_ns = NSEC_PER_SEC; /* 1 second */
-static int min_sched_tunable_scaling = SCHED_TUNABLESCALING_NONE;
-static int max_sched_tunable_scaling = SCHED_TUNABLESCALING_END-1;
+static int __maybe_unused min_sched_tunable_scaling = SCHED_TUNABLESCALING_NONE;
+static int __maybe_unused max_sched_tunable_scaling = SCHED_TUNABLESCALING_END-1;
#endif
#ifdef CONFIG_COMPACTION
--
1.7.9.5
next reply other threads:[~2012-10-05 15:58 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-10-05 15:57 Fabio Estevam [this message]
2012-10-05 18:03 ` Arnd Bergmann
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