From: Steven Rostedt (Red Hat) <rostedt@goodmis.org>
Date: Sat, 9 Mar 2013 13:36:53 +0000 (-0500)
Subject: tracing: Consolidate updating of count for traceon/off
X-Git-Tag: v3.10-rc1~189^2~37
X-Git-Url: http://pileus.org/git/?p=~andy%2Flinux;a=commitdiff_plain;h=1c31714328be90764e46716f31fb0bd6da44c305

tracing: Consolidate updating of count for traceon/off

Remove some duplicate code and replace it with a helper function.
This makes the code a it cleaner.

Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
---

diff --git a/kernel/trace/trace_functions.c b/kernel/trace/trace_functions.c
index e467c0c7bdd..38cfb290ecd 100644
--- a/kernel/trace/trace_functions.c
+++ b/kernel/trace/trace_functions.c
@@ -214,38 +214,37 @@ static struct tracer function_trace __read_mostly =
 };
 
 #ifdef CONFIG_DYNAMIC_FTRACE
-static void
-ftrace_traceon(unsigned long ip, unsigned long parent_ip, void **data)
+static int update_count(void **data)
 {
-	long *count = (long *)data;
-
-	if (tracing_is_on())
-		return;
+	unsigned long *count = (long *)data;
 
 	if (!*count)
-		return;
+		return 0;
 
 	if (*count != -1)
 		(*count)--;
 
-	tracing_on();
+	return 1;
 }
 
 static void
-ftrace_traceoff(unsigned long ip, unsigned long parent_ip, void **data)
+ftrace_traceon(unsigned long ip, unsigned long parent_ip, void **data)
 {
-	long *count = (long *)data;
-
-	if (!tracing_is_on())
+	if (tracing_is_on())
 		return;
 
-	if (!*count)
-		return;
+	if (update_count(data))
+		tracing_on();
+}
 
-	if (*count != -1)
-		(*count)--;
+static void
+ftrace_traceoff(unsigned long ip, unsigned long parent_ip, void **data)
+{
+	if (!tracing_is_on())
+		return;
 
-	tracing_off();
+	if (update_count(data))
+		tracing_off();
 }
 
 static int