linux-kernel - [PATCH 0/2] memcg: OOM log improvements

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Message-ID: <20230426133919.1342942-1-yosryahmed@google.com>
Date:   Wed, 26 Apr 2023 13:39:17 +0000
From:   Yosry Ahmed <yosryahmed@...gle.com>
To:     Johannes Weiner <hannes@...xchg.org>,
        Michal Hocko <mhocko@...nel.org>,
        Roman Gushchin <roman.gushchin@...ux.dev>,
        Shakeel Butt <shakeelb@...gle.com>,
        Andrew Morton <akpm@...ux-foundation.org>
Cc:     Muchun Song <muchun.song@...ux.dev>,
        Sergey Senozhatsky <senozhatsky@...omium.org>,
        Steven Rostedt <rostedt@...dmis.org>,
        Petr Mladek <pmladek@...e.com>, Chris Li <chrisl@...nel.org>,
        cgroups@...r.kernel.org, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org, Yosry Ahmed <yosryahmed@...gle.com>
Subject: [PATCH 0/2] memcg: OOM log improvements

This short patch series brings back some cgroup v1 stats in OOM logs,
and it makes memcg OOM logging less reliant on printk() internals.

The series uses seq_buf_do_printk() which was only recently introduced
[1]. It did not land in Linus's tree yet, but ideally it will land this
merge window. I thought I would share the patches meanwhile for
feedback.

[1]https://lore.kernel.org/lkml/20230415100110.1419872-1-senozhatsky@chromium.org/

Yosry Ahmed (2):
  memcg: use seq_buf_do_printk() with mem_cgroup_print_oom_meminfo()
  memcg: dump memory.stat during cgroup OOM for v1

 mm/memcontrol.c | 85 ++++++++++++++++++++++++++++---------------------
 1 file changed, 48 insertions(+), 37 deletions(-)

-- 
2.40.1.495.gc816e09b53d-goog