[for-next][PATCH 01/20] tracing: Consolidate updating of count for traceon/off

[Steven Rostedt]

From: "Steven Rostedt (Red Hat)" <rost...@goodmis.org>

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

Signed-off-by: Steven Rostedt <rost...@goodmis.org>
---
 kernel/trace/trace_functions.c |   33 ++++++++++++++++-----------------
 1 file changed, 16 insertions(+), 17 deletions(-)

diff --git a/kernel/trace/trace_functions.c b/kernel/trace/trace_functions.c
index e467c0c..38cfb29 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
-- 
1.7.10.4

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