From: Andrew Morton <akpm@linux-foundation.org>

Cc: Daniel Walker <dwalker@mvista.com>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 kernel/stop_machine.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff -puN kernel/stop_machine.c~stopmachine-semaphore-to-mutex-fix kernel/stop_machine.c
--- a/kernel/stop_machine.c~stopmachine-semaphore-to-mutex-fix
+++ a/kernel/stop_machine.c
@@ -29,7 +29,6 @@ enum stopmachine_state {
 static enum stopmachine_state stopmachine_state;
 static unsigned int stopmachine_num_threads;
 static atomic_t stopmachine_thread_ack;
-static DEFINE_MUTEX(stopmachine_mutex);
 
 static int stopmachine(void *cpu)
 {
@@ -170,6 +169,7 @@ static int do_stop(void *_smdata)
 struct task_struct *__stop_machine_run(int (*fn)(void *), void *data,
 				       unsigned int cpu)
 {
+	static DEFINE_MUTEX(stopmachine_mutex);
 	struct stop_machine_data smdata;
 	struct task_struct *p;
 
_