[PATCH v2 2/2] sched/headers: Move sched_rt_entity::back to under the CONFIG_RT_GROUP_SCHED block

[Yajun Deng <yajun.deng@linux.dev>]

We already remove the call to the 'back' member when CONFIG_RT_GROUP_SCHED
is disabled.

It's safe to move sched_rt_entity::back to under the
CONFIG_RT_GROUP_SCHED block, it would save a few bytes.

Signed-off-by: Yajun Deng <yajun.deng@linux.dev>
---
 include/linux/sched.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/linux/sched.h b/include/linux/sched.h
index f2f907ef1389..79d3bdda9463 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -582,8 +582,8 @@ struct sched_rt_entity {
 	unsigned short			on_rq;
 	unsigned short			on_list;
 
-	struct sched_rt_entity		*back;
 #ifdef CONFIG_RT_GROUP_SCHED
+	struct sched_rt_entity		*back;
 	struct sched_rt_entity		*parent;
 	/* rq on which this entity is (to be) queued: */
 	struct rt_rq			*rt_rq;
-- 
2.25.1