From 437e734959cb63b49813fd88718851b38e6163b1 Mon Sep 17 00:00:00 2001
From: John Kacur <jkacur@redhat.com>
Date: Mon, 14 Nov 2011 02:44:42 +0100
Subject: [PATCH 186/274] rcu: Fix macro substitution for synchronize_rcu_bh()
 on RT
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kernel/rcutorture.c:492: error: ‘synchronize_rcu_bh’ undeclared here (not in a function)

synchronize_rcu_bh() is not just called as a normal function, but can
also be referenced as a function pointer. When CONFIG_PREEMPT_RT_FULL
is enabled, synchronize_rcu_bh() is defined as synchronize_rcu(), but
needs to be defined without the parenthesis because the compiler will
complain when synchronize_rcu_bh is referenced as a function pointer
and not a function.

Signed-off-by: John Kacur <jkacur@redhat.com>
Cc: Paul McKenney <paulmck@linux.vnet.ibm.com>
Cc: stable-rt@vger.kernel.org
Link: http://lkml.kernel.org/r/1321235083-21756-1-git-send-email-jkacur@redhat.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---
 include/linux/rcutree.h |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/linux/rcutree.h b/include/linux/rcutree.h
index 5b2d03e..ba517b5 100644
--- a/include/linux/rcutree.h
+++ b/include/linux/rcutree.h
@@ -60,7 +60,7 @@ static inline void exit_rcu(void)
 #ifndef CONFIG_PREEMPT_RT_FULL
 extern void synchronize_rcu_bh(void);
 #else
-# define synchronize_rcu_bh()	synchronize_rcu()
+# define synchronize_rcu_bh	synchronize_rcu
 #endif
 extern void synchronize_sched_expedited(void);
 extern void synchronize_rcu_expedited(void);
-- 
1.7.10.4