linux-kernel - Re: [PATCH v2] selftests/cgroup: memory controller self-tests

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Message-ID: <20180510183224.GP2368884@devbig577.frc2.facebook.com>
Date:   Thu, 10 May 2018 11:32:24 -0700
From:   Tejun Heo <tj@...nel.org>
To:     Roman Gushchin <guro@...com>
Cc:     Shuah Khan <shuah@...nel.org>,
        Johannes Weiner <hannes@...xchg.org>,
        Michal Hocko <mhocko@...e.com>,
        Mike Rapoport <rppt@...ux.vnet.ibm.com>, kernel-team@...com,
        linux-kselftest@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] selftests/cgroup: memory controller self-tests

On Thu, May 10, 2018 at 05:37:01PM +0100, Roman Gushchin wrote:
> Cgroups are used for controlling the physical resource distribution
> (memory, CPU, io, etc) and often are used as basic building blocks
> for large distributed computing systems. Even small differences
> in the actual behavior may lead to significant incidents.
> 
> The codebase is under the active development, which will unlikely
> stop at any time soon. Also it's scattered over different
> kernel subsystems, which makes regressions more probable.
> 
> Given that, the lack of any tests is crying.
> 
> This patch implements some basic tests for the memory controller,
> as well as a minimal required framework.
> It doesn't pretend for a very good coverage, but pretends
> to be a starting point.
> 
> Hopefully, any following significant changes will
> include corresponding tests.
> 
> Tests for CPU and io controllers, as well as cgroup core
> are next in the todo list.

This is great.  Applying to cgroup/for-4.18.

Thanks a lot.

-- 
tejun