ftrace: trace scheduler rbtree

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index 65d2c0a..06380dc1 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -129,6 +129,7 @@
 	"bin",
 	"block",
 	"stacktrace",
+	"sched-tree",
 	NULL
 };