lkml.org 
[lkml]   [2019]   [Feb]   [28]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 3/6] mm: memcontrol: replace node summing with memcg_page_state()
Date
Instead of adding up the node counters, use memcg_page_state() to get
the memcg state directly. This is a bit cheaper and more stream-lined.

Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
---
mm/memcontrol.c | 9 ++++++---
1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index d85a41cfee60..e702b67cde41 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -746,10 +746,13 @@ static unsigned long mem_cgroup_nr_lru_pages(struct mem_cgroup *memcg,
unsigned int lru_mask)
{
unsigned long nr = 0;
- int nid;
+ enum lru_list lru;

- for_each_node_state(nid, N_MEMORY)
- nr += mem_cgroup_node_nr_lru_pages(memcg, nid, lru_mask);
+ for_each_lru(lru) {
+ if (!(BIT(lru) & lru_mask))
+ continue;
+ nr += memcg_page_state(memcg, NR_LRU_BASE + lru);
+ }
return nr;
}

--
2.20.1
\
 
 \ /
  Last update: 2019-02-28 17:31    [W:0.067 / U:0.408 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site