commit 729358da95a1b3850ef892e9384f58932da1dc69
author Steven Rostedt (Red Hat) <rostedt@goodmis.org> Tue Sep 29 10:15:10 2015 -0400
committer Steven Rostedt <rostedt@goodmis.org> Tue Sep 29 13:23:58 2015 -0400
tree d7d4ad01b17ed7490e9689d1eb79396b9dbb7099
parent a3418a364ec3c8f0c29bf3f4cfc71dc6f240150e

tracing: Only create function graph options when it is compiled in

Do not create fuction graph tracer options when function graph tracer is not
even compiled in.

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

kernel/trace/trace_sched_wakeup.c

diff --git a/kernel/trace/trace_sched_wakeup.c b/kernel/trace/trace_sched_wakeup.c
index f5d2e65..a6c350c 100644
--- a/kernel/trace/trace_sched_wakeup.c
+++ b/kernel/trace/trace_sched_wakeup.c
@@ -40,15 +40,15 @@
 static int save_flags;
 static bool function_enabled;
 
-#define is_graph() (trace_flags & TRACE_ITER_DISPLAY_GRAPH)
-
 #ifdef CONFIG_FUNCTION_GRAPH_TRACER
 static int wakeup_display_graph(struct trace_array *tr, int set);
+# define is_graph() (trace_flags & TRACE_ITER_DISPLAY_GRAPH)
 #else
 static inline int wakeup_display_graph(struct trace_array *tr, int set)
 {
 	return -EINVAL;
 }
+# define is_graph() false
 #endif
 
 
@@ -174,8 +174,10 @@
 	if (mask & TRACE_ITER_FUNCTION)
 		return wakeup_function_set(tr, set);
 
+#ifdef CONFIG_FUNCTION_GRAPH_TRACER
 	if (mask & TRACE_ITER_DISPLAY_GRAPH)
 		return wakeup_display_graph(tr, set);
+#endif
 
 	return trace_keep_overwrite(tracer, mask, set);
 }