linux-kernel - Re: [PATCH v2 0/5] Fix bugs in memcontroller cgroup tests

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Message-ID: <20220512170410.GA16096@blackbody.suse.cz>
Date:   Thu, 12 May 2022 19:04:10 +0200
From:   Michal Koutný <mkoutny@...e.com>
To:     David Vernet <void@...ifault.com>
Cc:     akpm@...ux-foundation.org, tj@...nel.org, roman.gushchin@...ux.dev,
        linux-kernel@...r.kernel.org, linux-mm@...ck.org,
        cgroups@...r.kernel.org, hannes@...xchg.org, mhocko@...nel.org,
        shakeelb@...gle.com, kernel-team@...com
Subject: Re: [PATCH v2 0/5] Fix bugs in memcontroller cgroup tests

Hello.

On Sat, Apr 23, 2022 at 08:56:15AM -0700, David Vernet <void@...ifault.com> wrote:
> tools/testing/selftests/cgroup/test_memcontrol.c contains a set of
> testcases which validate expected behavior of the cgroup memory controller.
> Roman Gushchin recently sent out a patchset that fixed a few issues in the
> test.

Link here
https://lore.kernel.org/r/20220415000133.3955987-1-roman.gushchin@linux.dev/.

> This patchset continues that effort by fixing a few more issues that
> were causing non-deterministic failures in the suite.

Are the Roman's patches merged anywhere? (I ran into some issues when I
was rebasing your (David's) series on top of master.) I'd like to put
all sensible patches in one series or stack on existing branch (if
there's any).

For possible v3 of this series, I did:
  - dropped the patch that allows non-zero memory.events:low for a sibling with
    memory.low=0 when mounted with memory_recursiveprot (the case needs more
    discussion),
  - added few more cleanups, convenience for debugging,
  - fixed comments in the first patch.

Pushed here [1] before properly sending the v3 for discussion.

Thanks,
Michal

[1] https://github.com/Werkov/linux/commits/cgroup-ml/memory.low-overreclaim-var2