git/linux-cryptodev-2.6
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/herbert/cryptodev-2.6.git synced 2026-04-23 05:56:14 -04:00
Code Issues Packages Projects Releases Wiki Activity

memcg: add per-memcg vmalloc stat

Browse Source 
The kvmalloc* allocation functions can fallback to vmalloc allocations
and more often on long running machines.  In addition the kernel does
have __GFP_ACCOUNT kvmalloc* calls.  So, often on long running machines,
the memory.stat does not tell the complete picture which type of memory
is charged to the memcg.  So add a per-memcg vmalloc stat.

[shakeelb@google.com: page_memcg() within rcu lock, per Muchun]
  Link: https://lkml.kernel.org/r/20211222052457.1960701-1-shakeelb@google.com
[akpm@linux-foundation.org: remove cast, per Muchun]
[shakeelb@google.com: remove area->page[0] checks and move to page by page accounting per Michal]
  Link: https://lkml.kernel.org/r/20220104222341.3972772-1-shakeelb@google.com

Link: https://lkml.kernel.org/r/20211221215336.1922823-1-shakeelb@google.com
Signed-off-by: Shakeel Butt <shakeelb@google.com>
Acked-by: Roman Gushchin <guro@fb.com>
Reviewed-by: Muchun Song <songmuchun@bytedance.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Shakeel Butt
2022-01-14 14:05:45 -08:00
committed by Linus Torvalds
parent 06b2c3b08c
commit 4e5aa1f4c2
4 changed files with 36 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

21
include/linux/memcontrol.h
View File

@@ -33,6 +33,7 @@ enum memcg_stat_item {
MEMCG_SWAP = NR_VM_NODE_STAT_ITEMS,
MEMCG_SOCK,
MEMCG_PERCPU_B,
MEMCG_VMALLOC,
MEMCG_NR_STAT,
};
@@ -992,6 +993,21 @@ static inline void mod_memcg_state(struct mem_cgroup *memcg,
local_irq_restore(flags);
}
static inline void mod_memcg_page_state(struct page *page,
int idx, int val)
{
struct mem_cgroup *memcg;
if (mem_cgroup_disabled())
return;
rcu_read_lock();
memcg = page_memcg(page);
if (memcg)
mod_memcg_state(memcg, idx, val);
rcu_read_unlock();
}
static inline unsigned long memcg_page_state(struct mem_cgroup *memcg, int idx)
{
return READ_ONCE(memcg->vmstats.state[idx]);
@@ -1447,6 +1463,11 @@ static inline void mod_memcg_state(struct mem_cgroup *memcg,
{
}
static inline void mod_memcg_page_state(struct page *page,
int idx, int val)
{
}
static inline unsigned long memcg_page_state(struct mem_cgroup *memcg, int idx)
{
return 0;