tracing: Rename trace_event_mutex to trace_event_sem

trace_event_mutex is an rw semaphore now, not a mutex, change the name.

Link: http://lkml.kernel.org/r/513D843B.40109@huawei.com

Signed-off-by: zhangwei(Jovi) <jovi.zhangwei@huawei.com>
[ Forward ported to my new code ]
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>

1 files changed, 8 insertions, 8 deletions

diff --git a/kernel/trace/trace_output.c b/kernel/trace/trace_output.c
index 19f48e7edc39..f475b2a7ac88 100644
--- a/kernel/trace/trace_output.c
+++ b/kernel/trace/trace_output.c
@@ -14,7 +14,7 @@
 /* must be a power of 2 */
 #define EVENT_HASHSIZE  128
 
-DECLARE_RWSEM(trace_event_mutex);
+DECLARE_RWSEM(trace_event_sem);
 
 static struct hlist_head event_hash[EVENT_HASHSIZE] __read_mostly;
 
@@ -826,12 +826,12 @@ static int trace_search_list(struct list_head **list)
 
 void trace_event_read_lock(void)
 {
-        down_read(&trace_event_mutex);
+        down_read(&trace_event_sem);
 }
 
 void trace_event_read_unlock(void)
 {
-        up_read(&trace_event_mutex);
+        up_read(&trace_event_sem);
 }
 
 /**
@@ -854,7 +854,7 @@ int register_ftrace_event(struct trace_event *event)
         unsigned key;
         int ret = 0;
 
-        down_write(&trace_event_mutex);
+        down_write(&trace_event_sem);
 
         if (WARN_ON(!event))
                 goto out;
@@ -909,14 +909,14 @@ int register_ftrace_event(struct trace_event *event)
 
         ret = event->type;
  out:
-        up_write(&trace_event_mutex);
+        up_write(&trace_event_sem);
 
         return ret;
 }
 EXPORT_SYMBOL_GPL(register_ftrace_event);
 
 /*
- * Used by module code with the trace_event_mutex held for write.
+ * Used by module code with the trace_event_sem held for write.
  */
 int __unregister_ftrace_event(struct trace_event *event)
 {
@@ -931,9 +931,9 @@ int __unregister_ftrace_event(struct trace_event *event)
  */
 int unregister_ftrace_event(struct trace_event *event)
 {
-        down_write(&trace_event_mutex);
+        down_write(&trace_event_sem);
         __unregister_ftrace_event(event);
-        up_write(&trace_event_mutex);
+        up_write(&trace_event_sem);
 
         return 0;
 }