From b2807f07f4f87362925b8a5b8cbb7b624da10f03 Mon Sep 17 00:00:00 2001 From: Johannes Weiner Date: Wed, 20 Jan 2016 15:03:22 -0800 Subject: [PATCH] mm: memcontrol: add "sock" to cgroup2 memory.stat Provide statistics on how much of a cgroup's memory footprint is made up of socket buffers from network connections owned by the group. Signed-off-by: Johannes Weiner Cc: Michal Hocko Cc: Vladimir Davydov Cc: Tejun Heo Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/memcontrol.h | 5 ++++- mm/memcontrol.c | 6 ++++++ 2 files changed, 10 insertions(+), 1 deletion(-) diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h index 166661708410..9ae48d4aeb5e 100644 --- a/include/linux/memcontrol.h +++ b/include/linux/memcontrol.h @@ -50,6 +50,9 @@ enum mem_cgroup_stat_index { MEM_CGROUP_STAT_WRITEBACK, /* # of pages under writeback */ MEM_CGROUP_STAT_SWAP, /* # of pages, swapped out */ MEM_CGROUP_STAT_NSTATS, + /* default hierarchy stats */ + MEMCG_SOCK, + MEMCG_NR_STAT, }; struct mem_cgroup_reclaim_cookie { @@ -87,7 +90,7 @@ enum mem_cgroup_events_target { #ifdef CONFIG_MEMCG struct mem_cgroup_stat_cpu { - long count[MEM_CGROUP_STAT_NSTATS]; + long count[MEMCG_NR_STAT]; unsigned long events[MEMCG_NR_EVENTS]; unsigned long nr_page_events; unsigned long targets[MEM_CGROUP_NTARGETS]; diff --git a/mm/memcontrol.c b/mm/memcontrol.c index 98f4109bff6c..ca052f2a4a0b 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -5128,6 +5128,8 @@ static int memory_stat_show(struct seq_file *m, void *v) (u64)tree_stat(memcg, MEM_CGROUP_STAT_RSS) * PAGE_SIZE); seq_printf(m, "file %llu\n", (u64)tree_stat(memcg, MEM_CGROUP_STAT_CACHE) * PAGE_SIZE); + seq_printf(m, "sock %llu\n", + (u64)tree_stat(memcg, MEMCG_SOCK) * PAGE_SIZE); seq_printf(m, "file_mapped %llu\n", (u64)tree_stat(memcg, MEM_CGROUP_STAT_FILE_MAPPED) * @@ -5631,6 +5633,8 @@ bool mem_cgroup_charge_skmem(struct mem_cgroup *memcg, unsigned int nr_pages) if (in_softirq()) gfp_mask = GFP_NOWAIT; + this_cpu_add(memcg->stat->count[MEMCG_SOCK], nr_pages); + if (try_charge(memcg, gfp_mask, nr_pages) == 0) return true; @@ -5650,6 +5654,8 @@ void mem_cgroup_uncharge_skmem(struct mem_cgroup *memcg, unsigned int nr_pages) return; } + this_cpu_sub(memcg->stat->count[MEMCG_SOCK], nr_pages); + page_counter_uncharge(&memcg->memory, nr_pages); css_put_many(&memcg->css, nr_pages); } -- GitLab