linux-kernel - [GIT PULL] core kernel fixes (fix: arch/x86/kernel/cpu/mcheck/mce.c:166: error: 'mce_read

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Date:	Sun, 14 Mar 2010 19:14:58 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
Cc:	linux-kernel@...r.kernel.org,
	"Paul E. McKenney" <paulmck@...ibm.com>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Thomas Gleixner <tglx@...utronix.de>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: [GIT PULL] core kernel fixes (fix:
 arch/x86/kernel/cpu/mcheck/mce.c:166: error: 'mce_read_mutex' undeclared)


Linus,

Please pull the latest core-fixes-for-linus git tree from:

   git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip.git core-fixes-for-linus

This fixes a PROVE_LOCKING=y && PROVE_RCU=y build bug that slipped through. 

Both options are off by default (and PROVE_RCU is new in .34) but i'd still 
expect it to trigger more commonly with debug-enabled kernels so please pull 
this fix as the first one in the morning if possible.
 
 Thanks,

	Ingo

------------------>
Ingo Molnar (1):
      x86/mce: Fix build bug with CONFIG_PROVE_LOCKING=y && CONFIG_X86_MCE_INTEL=y


 arch/x86/kernel/cpu/mcheck/mce.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/x86/kernel/cpu/mcheck/mce.c b/arch/x86/kernel/cpu/mcheck/mce.c
index bd58de4..3ab9c88 100644
--- a/arch/x86/kernel/cpu/mcheck/mce.c
+++ b/arch/x86/kernel/cpu/mcheck/mce.c
@@ -46,6 +46,8 @@
 
 #include "mce-internal.h"
 
+static DEFINE_MUTEX(mce_read_mutex);
+
 #define rcu_dereference_check_mce(p) \
 	rcu_dereference_check((p), \
 			      rcu_read_lock_sched_held() || \
@@ -1490,8 +1492,6 @@ static void collect_tscs(void *data)
 	rdtscll(cpu_tsc[smp_processor_id()]);
 }
 
-static DEFINE_MUTEX(mce_read_mutex);
-
 static ssize_t mce_read(struct file *filp, char __user *ubuf, size_t usize,
 			loff_t *off)
 {
--
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