[PATCH] oprofile: convert from semaphores to mutexes

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Cc: Philippe Elie <phil.el@wanadoo.fr>
Cc: John Levon <levon@movementarian.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 13 insertions, 13 deletions

diff --git a/drivers/oprofile/oprof.c b/drivers/oprofile/oprof.c
index b3f1cd6a24c..e5162a64018 100644
--- a/drivers/oprofile/oprof.c
+++ b/drivers/oprofile/oprof.c
@@ -12,7 +12,7 @@
 #include <linux/init.h>
 #include <linux/oprofile.h>
 #include <linux/moduleparam.h>
-#include <asm/semaphore.h>
+#include <asm/mutex.h>
 
 #include "oprof.h"
 #include "event_buffer.h"
@@ -25,7 +25,7 @@ struct oprofile_operations oprofile_ops;
 unsigned long oprofile_started;
 unsigned long backtrace_depth;
 static unsigned long is_setup;
-static DECLARE_MUTEX(start_sem);
+static DEFINE_MUTEX(start_mutex);
 
 /* timer
    0 - use performance monitoring hardware if available
@@ -37,7 +37,7 @@ int oprofile_setup(void)
 {
 	int err;
  
-	down(&start_sem);
+	mutex_lock(&start_mutex);
 
 	if ((err = alloc_cpu_buffers()))
 		goto out;
@@ -57,7 +57,7 @@ int oprofile_setup(void)
 		goto out3;
 
 	is_setup = 1;
-	up(&start_sem);
+	mutex_unlock(&start_mutex);
 	return 0;
  
 out3:
@@ -68,7 +68,7 @@ out2:
 out1:
 	free_cpu_buffers();
 out:
-	up(&start_sem);
+	mutex_unlock(&start_mutex);
 	return err;
 }
 
@@ -78,7 +78,7 @@ int oprofile_start(void)
 {
 	int err = -EINVAL;
  
-	down(&start_sem);
+	mutex_lock(&start_mutex);
  
 	if (!is_setup)
 		goto out;
@@ -95,7 +95,7 @@ int oprofile_start(void)
 
 	oprofile_started = 1;
 out:
-	up(&start_sem); 
+	mutex_unlock(&start_mutex);
 	return err;
 }
 
@@ -103,7 +103,7 @@ out:
 /* echo 0>/dev/oprofile/enable */
 void oprofile_stop(void)
 {
-	down(&start_sem);
+	mutex_lock(&start_mutex);
 	if (!oprofile_started)
 		goto out;
 	oprofile_ops.stop();
@@ -111,20 +111,20 @@ void oprofile_stop(void)
 	/* wake up the daemon to read what remains */
 	wake_up_buffer_waiter();
 out:
-	up(&start_sem);
+	mutex_unlock(&start_mutex);
 }
 
 
 void oprofile_shutdown(void)
 {
-	down(&start_sem);
+	mutex_lock(&start_mutex);
 	sync_stop();
 	if (oprofile_ops.shutdown)
 		oprofile_ops.shutdown();
 	is_setup = 0;
 	free_event_buffer();
 	free_cpu_buffers();
-	up(&start_sem);
+	mutex_unlock(&start_mutex);
 }
 
 
@@ -132,7 +132,7 @@ int oprofile_set_backtrace(unsigned long val)
 {
 	int err = 0;
 
-	down(&start_sem);
+	mutex_lock(&start_mutex);
 
 	if (oprofile_started) {
 		err = -EBUSY;
@@ -147,7 +147,7 @@ int oprofile_set_backtrace(unsigned long val)
 	backtrace_depth = val;
 
 out:
-	up(&start_sem);
+	mutex_unlock(&start_mutex);
 	return err;
 }