36 lines
1.4 KiB
Diff
36 lines
1.4 KiB
Diff
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Subject: rcu: Fix macro substitution for synchronize_rcu_bh() on RT
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From: John Kacur <jkacur@redhat.com>
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Date: Mon, 14 Nov 2011 02:44:42 +0100
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kernel/rcutorture.c:492: error: ‘synchronize_rcu_bh’ undeclared here (not in a function)
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synchronize_rcu_bh() is not just called as a normal function, but can
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also be referenced as a function pointer. When CONFIG_PREEMPT_RT_FULL
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is enabled, synchronize_rcu_bh() is defined as synchronize_rcu(), but
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needs to be defined without the parenthesis because the compiler will
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complain when synchronize_rcu_bh is referenced as a function pointer
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and not a function.
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Signed-off-by: John Kacur <jkacur@redhat.com>
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Cc: Paul McKenney <paulmck@linux.vnet.ibm.com>
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Cc: stable-rt@vger.kernel.org
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Link: http://lkml.kernel.org/r/1321235083-21756-1-git-send-email-jkacur@redhat.com
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Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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---
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include/linux/rcutree.h | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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Index: linux-3.2/include/linux/rcutree.h
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===================================================================
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--- linux-3.2.orig/include/linux/rcutree.h
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+++ linux-3.2/include/linux/rcutree.h
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@@ -60,7 +60,7 @@ static inline void exit_rcu(void)
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#ifndef CONFIG_PREEMPT_RT_FULL
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extern void synchronize_rcu_bh(void);
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#else
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-# define synchronize_rcu_bh() synchronize_rcu()
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+# define synchronize_rcu_bh synchronize_rcu
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#endif
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extern void synchronize_sched_expedited(void);
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extern void synchronize_rcu_expedited(void);
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