tracing: create tracers menu

We seem to have plenty tracers, lets create a menu and not clutter
the already cluttered debug menu more.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Acked-by: Frédéric Weisbecker <fweisbec@gmail.com>
Acked-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/kernel/trace/Kconfig b/kernel/trace/Kconfig
index 3533c58..bc535cb 100644
--- a/kernel/trace/Kconfig
+++ b/kernel/trace/Kconfig
@@ -29,6 +29,8 @@
 	select STACKTRACE
 	select TRACEPOINTS
 
+menu "Tracers"
+
 config FUNCTION_TRACER
 	bool "Kernel Function Tracer"
 	depends on HAVE_FUNCTION_TRACER
@@ -191,3 +193,5 @@
 	  a series of tests are made to verify that the tracer is
 	  functioning properly. It will do tests on all the configured
 	  tracers of ftrace.
+
+endmenu