linux-kernel - [tip:core/rcu] rcu: Add #ifdef to suppress __rcu_offline_cpu() warning in !HOTPLUG

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Date:	Tue, 25 Aug 2009 18:21:42 GMT
From:	"tip-bot for Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, paulmck@...ux.vnet.ibm.com,
	hpa@...or.com, mingo@...hat.com, lethal@...ux-sh.org,
	tglx@...utronix.de, mingo@...e.hu
Subject: [tip:core/rcu] rcu: Add #ifdef to suppress __rcu_offline_cpu() warning in !HOTPLUG_CPU builds

Commit-ID:  c935a331c8f569c7903ed26a3994a70cbea1802e
Gitweb:     http://git.kernel.org/tip/c935a331c8f569c7903ed26a3994a70cbea1802e
Author:     Paul E. McKenney <paulmck@...ux.vnet.ibm.com>
AuthorDate: Tue, 25 Aug 2009 08:40:25 -0700
Committer:  Ingo Molnar <mingo@...e.hu>
CommitDate: Tue, 25 Aug 2009 20:20:03 +0200

rcu: Add #ifdef to suppress __rcu_offline_cpu() warning in !HOTPLUG_CPU builds

Signed-off-by: Paul E. McKenney <paulmck@...ux.vnet.ibm.com>
Cc: laijs@...fujitsu.com
Cc: dipankar@...ibm.com
Cc: akpm@...ux-foundation.org
Cc: mathieu.desnoyers@...ymtl.ca
Cc: josht@...ux.vnet.ibm.com
Cc: dvhltc@...ibm.com
Cc: niv@...ibm.com
Cc: peterz@...radead.org
Cc: rostedt@...dmis.org
Cc: Paul Mundt <lethal@...ux-sh.org>
LKML-Reference: <20090825154025.GD6616@...ux.vnet.ibm.com>
Signed-off-by: Ingo Molnar <mingo@...e.hu>


---
 kernel/rcutree.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/kernel/rcutree.c b/kernel/rcutree.c
index 000b076..fee6316 100644
--- a/kernel/rcutree.c
+++ b/kernel/rcutree.c
@@ -84,7 +84,9 @@ extern long rcu_batches_completed_sched(void);
 static void cpu_quiet_msk(unsigned long mask, struct rcu_state *rsp,
 			  struct rcu_node *rnp, unsigned long flags);
 static void cpu_quiet_msk_finish(struct rcu_state *rsp, unsigned long flags);
+#ifdef CONFIG_HOTPLUG_CPU
 static void __rcu_offline_cpu(int cpu, struct rcu_state *rsp);
+#endif /* #ifdef CONFIG_HOTPLUG_CPU */
 static void __rcu_process_callbacks(struct rcu_state *rsp,
 				    struct rcu_data *rdp);
 static void __call_rcu(struct rcu_head *head,
--
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