sched: enable CONFIG_FAIR_GROUP_SCHED=y by default

enable CONFIG_FAIR_GROUP_SCHED=y by default.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
diff --git a/init/Kconfig b/init/Kconfig
index b680733..faed9a0 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -283,7 +283,7 @@
 
 config FAIR_GROUP_SCHED
 	bool "Fair group cpu scheduler"
-	default n
+	default y
 	depends on EXPERIMENTAL
 	help
 	  This feature lets cpu scheduler recognize task groups and control cpu