mm: memcontrol: remove unused mod_memcg_obj_state()

Since commit 991e7673859e ("mm: memcontrol: account kernel stack per
node") there is no user of the mod_memcg_obj_state().  So just remove
it.

Also rework type of the idx parameter of the mod_objcg_state() from int
to enum node_stat_item.

Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Muchun Song <[email protected]>
Acked-by: Roman Gushchin <[email protected]>
Acked-by: David Rientjes <[email protected]>
Reviewed-by: Shakeel Butt <[email protected]>
Cc: Johannes Weiner <[email protected]>
Cc: Michal Hocko <[email protected]>
Cc: Vladimir Davydov <[email protected]>
Cc: Christopher Lameter <[email protected]>
Cc: Pekka Enberg <[email protected]>
Cc: Joonsoo Kim <[email protected]>
Cc: Vlastimil Babka <[email protected]>
Cc: Yafang Shao <[email protected]>
Cc: Chris Down <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

1 files changed, 0 insertions, 6 deletions

diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h
index 922a7f600465..28bf65560084 100644
--- a/include/linux/memcontrol.h
+++ b/include/linux/memcontrol.h
@@ -798,8 +798,6 @@ void __mod_lruvec_state(struct lruvec *lruvec, enum node_stat_item idx,
 			int val);
 void __mod_lruvec_slab_state(void *p, enum node_stat_item idx, int val);
 
-void mod_memcg_obj_state(void *p, int idx, int val);
-
 static inline void mod_lruvec_slab_state(void *p, enum node_stat_item idx,
 					 int val)
 {
@@ -1255,10 +1253,6 @@ static inline void mod_lruvec_slab_state(void *p, enum node_stat_item idx,
 	mod_node_page_state(page_pgdat(page), idx, val);
 }
 
-static inline void mod_memcg_obj_state(void *p, int idx, int val)
-{
-}
-
 static inline
 unsigned long mem_cgroup_soft_limit_reclaim(pg_data_t *pgdat, int order,
 					    gfp_t gfp_mask,