sched: Mark autogroup_init() __init

autogroup_init() is only called at boot time.

Signed-off-by: Yong Zhang <yong.zhang0@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <1294375425-31065-1-git-send-email-yong.zhang0@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/kernel/sched_autogroup.c b/kernel/sched_autogroup.c
index e011e53..32a723b 100644
--- a/kernel/sched_autogroup.c
+++ b/kernel/sched_autogroup.c
@@ -9,7 +9,7 @@
 static struct autogroup autogroup_default;
 static atomic_t autogroup_seq_nr;
 
-static void autogroup_init(struct task_struct *init_task)
+static void __init autogroup_init(struct task_struct *init_task)
 {
 	autogroup_default.tg = &root_task_group;
 	root_task_group.autogroup = &autogroup_default;