From 1a61ab8038e724a6d8aa59e7d4931a119483294d Mon Sep 17 00:00:00 2001
From: Johannes Weiner <hannes@cmpxchg.org>
Date: Mon, 13 May 2019 17:18:00 -0700
Subject: [PATCH] mm: memcontrol: replace zone summing with lruvec_page_state()
Instead of adding up the zone counters, use lruvec_page_state() to get the
node state directly. This is a bit cheaper and more stream-lined.
Link: http://lkml.kernel.org/r/20190228163020.24100-3-hannes@cmpxchg.org
Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Reviewed-by: Roman Gushchin <guro@fb.com>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Tejun Heo <tj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
include/linux/memcontrol.h | 18 ------------------
mm/memcontrol.c | 2 +-
mm/vmscan.c | 2 +-
3 files changed, 2 insertions(+), 20 deletions(-)
diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h
index b238403f95b2..65f381b27a2d 100644
--- a/include/linux/memcontrol.h
+++ b/include/linux/memcontrol.h
@@ -504,19 +504,6 @@ void mem_cgroup_update_lru_size(struct lruvec *lruvec, enum lru_list lru,
unsigned long mem_cgroup_node_nr_lru_pages(struct mem_cgroup *memcg,
int nid, unsigned int lru_mask);
-static inline
-unsigned long mem_cgroup_get_lru_size(struct lruvec *lruvec, enum lru_list lru)
-{
- struct mem_cgroup_per_node *mz;
- unsigned long nr_pages = 0;
- int zid;
-
- mz = container_of(lruvec, struct mem_cgroup_per_node, lruvec);
- for (zid = 0; zid < MAX_NR_ZONES; zid++)
- nr_pages += mz->lru_zone_size[zid][lru];
- return nr_pages;
-}
-
static inline
unsigned long mem_cgroup_get_zone_lru_size(struct lruvec *lruvec,
enum lru_list lru, int zone_idx)
@@ -960,11 +947,6 @@ static inline bool mem_cgroup_online(struct mem_cgroup *memcg)
return true;
}
-static inline unsigned long
-mem_cgroup_get_lru_size(struct lruvec *lruvec, enum lru_list lru)
-{
- return 0;
-}
static inline
unsigned long mem_cgroup_get_zone_lru_size(struct lruvec *lruvec,
enum lru_list lru, int zone_idx)
diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 81a0d3914ec9..f30381481c45 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -737,7 +737,7 @@ unsigned long mem_cgroup_node_nr_lru_pages(struct mem_cgroup *memcg,
for_each_lru(lru) {
if (!(BIT(lru) & lru_mask))
continue;
- nr += mem_cgroup_get_lru_size(lruvec, lru);
+ nr += lruvec_page_state(lruvec, NR_LRU_BASE + lru);
}
return nr;
}
diff --git a/mm/vmscan.c b/mm/vmscan.c
index 39912c6b7181..e869f9e25a3d 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -346,7 +346,7 @@ unsigned long lruvec_lru_size(struct lruvec *lruvec, enum lru_list lru, int zone
int zid;
if (!mem_cgroup_disabled())
- lru_size = mem_cgroup_get_lru_size(lruvec, lru);
+ lru_size = lruvec_page_state(lruvec, NR_LRU_BASE + lru);
else
lru_size = node_page_state(lruvec_pgdat(lruvec), NR_LRU_BASE + lru);
--
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