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authorMarkus Armbruster <armbru@redhat.com>2006-06-25 05:47:33 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-06-25 10:01:04 -0700
commit59cc185ada89245204c658ebcf64422968736672 (patch)
tree042e46cfe90c2ad5b711e2791b05f73ab1fe7725 /drivers/oprofile/oprof.c
parenta2926b1449bcc3d348e2228114b04869dc2f3986 (diff)
downloadlinux-59cc185ada89245204c658ebcf64422968736672.tar.bz2
[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>
Diffstat (limited to 'drivers/oprofile/oprof.c')
-rw-r--r--drivers/oprofile/oprof.c26
1 files changed, 13 insertions, 13 deletions
diff --git a/drivers/oprofile/oprof.c b/drivers/oprofile/oprof.c
index b3f1cd6a24c1..e5162a64018b 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;
}