linux-kernel - Re: [PATCH] selftests/mm: Have the harness run each test category separately

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Message-ID: <aaa9cdf2-8fd9-4073-8c5e-f4ae3762a1bb@sirena.org.uk>
Date: Tue, 20 Jan 2026 17:47:42 +0000
From: Mark Brown <broonie@...nel.org>
To: Andrew Morton <akpm@...ux-foundation.org>
Cc: David Hildenbrand <david@...nel.org>,
	Lorenzo Stoakes <lorenzo.stoakes@...cle.com>,
	"Liam R. Howlett" <Liam.Howlett@...cle.com>,
	Vlastimil Babka <vbabka@...e.cz>, Mike Rapoport <rppt@...nel.org>,
	Suren Baghdasaryan <surenb@...gle.com>,
	Michal Hocko <mhocko@...e.com>, Shuah Khan <shuah@...nel.org>,
	Jason Gunthorpe <jgg@...pe.ca>, Leon Romanovsky <leon@...nel.org>,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org,
	linux-kselftest@...r.kernel.org
Subject: Re: [PATCH] selftests/mm: Have the harness run each test category
 separately

On Tue, Jan 20, 2026 at 09:22:52AM -0800, Andrew Morton wrote:
> On Tue, 20 Jan 2026 13:25:32 +0000 Mark Brown <broonie@...nel.org> wrote:

> > has separately.  Since kselftest really wants to run test programs this
> > is done by providing a trivial wrapper script for each categorty that
> > invokes run_vmtest.sh, this is not a thing of great elegence but it is
> > clear and simple.  Since run_vmtests.sh is doing runtime support
> > detection, scenario enumeration and setup for many of the tests we can't
> > consistently tell the framework about the individual test programs.

> Thanks, let's see what people think.

> What happens with tests which are newly added but which don't integrate
> into this new framework?  eg,
> https://lkml.kernel.org/r/20260120123239.909882-2-linmiaohe@huawei.com

Anything adding a new category will just not get run by the kselftest
harness until someone adds a wrapper script for them, they'll still get
run if someone invokes run_vmtest.sh with no arguments directly.  As the
changelog says it's not particularly nice, but hopefully people don't
add new categories all that often.

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