sched: Remove double declaration of root_task_group

It's already declared in include/linux/sched.h

Signed-off-by: Li Zefan <lizefan@huawei.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/5135A7D8.7000107@huawei.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>

1 files changed, 0 insertions, 5 deletions

diff --git a/kernel/sched/sched.h b/kernel/sched/sched.h
index 304fc1c77143..30bebb955023 100644
--- a/kernel/sched/sched.h
+++ b/kernel/sched/sched.h
@@ -179,11 +179,6 @@ struct task_group {
 #define MAX_SHARES      (1UL << 18)
 #endif
 
-/* Default task group.
- *      Every task in system belong to this group at bootup.
- */
-extern struct task_group root_task_group;
-
 typedef int (*tg_visitor)(struct task_group *, void *);
 
 extern int walk_tg_tree_from(struct task_group *from,