linux-kernel - [PATCH v3 0/2] memcontrol: support cgroup level OOM protection

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Message-ID: <20230506114948.6862-1-chengkaitao@didiglobal.com>
Date:   Sat, 6 May 2023 19:49:46 +0800
From:   chengkaitao <chengkaitao@...iglobal.com>
To:     <tj@...nel.org>, <lizefan.x@...edance.com>, <hannes@...xchg.org>,
        <corbet@....net>, <mhocko@...nel.org>, <roman.gushchin@...ux.dev>,
        <shakeelb@...gle.com>, <akpm@...ux-foundation.org>,
        <brauner@...nel.org>, <muchun.song@...ux.dev>
CC:     <viro@...iv.linux.org.uk>, <zhengqi.arch@...edance.com>,
        <ebiederm@...ssion.com>, <Liam.Howlett@...cle.com>,
        <chengzhihao1@...wei.com>, <pilgrimtao@...il.com>,
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        <willy@...radead.org>, <vasily.averin@...ux.dev>, <vbabka@...e.cz>,
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        <cgroups@...r.kernel.org>, <linux-doc@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <linux-fsdevel@...r.kernel.org>,
        <linux-mm@...ck.org>, chengkaitao <chengkaitao@...iglobal.com>
Subject: [PATCH v3 0/2] memcontrol: support cgroup level OOM protection

Establish a new OOM score algorithm, supports the cgroup level OOM
protection mechanism. When an global/memcg oom event occurs, we treat
all processes in the cgroup as a whole, and OOM killers need to select
the process to kill based on the protection quota of the cgroup

Changelog:
v3:
  * Add "auto" option for memory.oom.protect. (patch 1)
  * Fix division errors. (patch 1)
  * Add observation indicator oom_kill_inherit. (patch 2)
v2:
  * Modify the formula of the process request memcg protection quota.
  https://lore.kernel.org/linux-mm/20221208034644.3077-1-chengkaitao@didiglobal.com/
v1:
  https://lore.kernel.org/linux-mm/20221130070158.44221-1-chengkaitao@didiglobal.com/

chengkaitao (2):
  mm: memcontrol: protect the memory in cgroup from being oom killed
  memcg: add oom_kill_inherit event indicator

 Documentation/admin-guide/cgroup-v2.rst |  29 ++++-
 fs/proc/base.c                          |  17 ++-
 include/linux/memcontrol.h              |  46 +++++++-
 include/linux/oom.h                     |   3 +-
 include/linux/page_counter.h            |   6 +
 mm/memcontrol.c                         | 199 ++++++++++++++++++++++++++++++++
 mm/oom_kill.c                           |  25 ++--
 mm/page_counter.c                       |  30 +++++
 8 files changed, 334 insertions(+), 21 deletions(-)

-- 
2.14.1