[RFC PATCH 02/22] sched/fair: Convert "se->runnable_weight" to unsigned int and pack the struct

[K Prateek Nayak]

se->runnable_weight tracks group_cfs_rq(se)->h_nr_running which is an
unsigned int. Convert runnable_weight to an unsigned int to match the
types.

pahole notes that there is a 4 byte hole after se's "depth" member
since depth is an integer. Move depth below runnable_weight to prevent
the 4 byte hole and reclaim 8 bytes of space in total.

Signed-off-by: K Prateek Nayak <kprateek.nayak@xxxxxxx>
---
 include/linux/sched.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/include/linux/sched.h b/include/linux/sched.h
index 9632e3318e0d..34862d904ea3 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -569,14 +569,14 @@ struct sched_entity {
 	u64				nr_migrations;
 
 #ifdef CONFIG_FAIR_GROUP_SCHED
-	int				depth;
 	struct sched_entity		*parent;
 	/* rq on which this entity is (to be) queued: */
 	struct cfs_rq			*cfs_rq;
 	/* rq "owned" by this entity/group: */
 	struct cfs_rq			*my_q;
 	/* cached value of my_q->h_nr_running */
-	unsigned long			runnable_weight;
+	unsigned int			runnable_weight;
+	int				depth;
 #endif
 
 #ifdef CONFIG_SMP
-- 
2.43.0