linux-kernel - Re: [PATCH] lib/atomic64_test.c: convert to use KUnit

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Message-ID: <CAGS_qxq=O_npmyKHMSS_erzbh8O9TojCVYxyf7muEJaHOfDBjg@mail.gmail.com>
Date:   Fri, 13 May 2022 09:25:13 -0700
From:   Daniel Latypov <dlatypov@...gle.com>
To:     Michael Ellerman <mpe@...erman.id.au>
Cc:     brendanhiggins@...gle.com, davidgow@...gle.com,
        linux-kernel@...r.kernel.org, kunit-dev@...glegroups.com,
        linux-kselftest@...r.kernel.org, skhan@...uxfoundation.org
Subject: Re: [PATCH] lib/atomic64_test.c: convert to use KUnit

On Thu, May 12, 2022 at 8:06 PM Michael Ellerman <mpe@...erman.id.au> wrote:
>
> Daniel Latypov <dlatypov@...gle.com> writes:
> > The test currently is a bunch of checks (implemented using BUG_ON())
> > that can be built into the kernel or as a module.
> >
> > Convert it to a KUnit test, which can also run in both modes.
> > From a user's perspective, this change adds a CONFIG_KUNIT=y dep and
> > changes the output format of the test [1]. The test itself is the same.
> ...
>
> I don't know why I got Cc'ed on this :), but I gave it a quick test anyway.
>
> Seems to work fine on a Power9.
> I also flipped some of the conditionals to make sure failure is detected
> correctly.
>
> Tested-by: Michael Ellerman <mpe@...erman.id.au> (powerpc)

Thanks!

You were just the last person to have made a real change to this file [1].
The people signing off no commits seemed inconsistent and
get_maintainers didn't give anything back.

commit ffba19ccae8d98beb0a17345a0b1ee9e415b23b8
Author: Michael Ellerman <mpe@...erman.id.au>
Date:   Fri Jul 14 14:49:41 2017 -0700

>
>
> > Meta:
> > 1. this patch applies on top of the kunit branch,
> > https://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest.git/?h=kunit
> >
> > 2. checkpatch complains about aligning with parens, but it wants me to
> > indent the `#ifdef CONFIG_X86_64` which seems inappropriate in context.
> >
> > 3. this file doesn't seem to have a clear maintainer, so I assume this
> > conversion is fine to go through the kunit branch.
>
> I think you want to at least Cc the atomic folks:
>
> ATOMIC INFRASTRUCTURE
> M:      Will Deacon <will@...nel.org>
> M:      Peter Zijlstra <peterz@...radead.org>
> R:      Boqun Feng <boqun.feng@...il.com>
> R:      Mark Rutland <mark.rutland@....com>
> L:      linux-kernel@...r.kernel.org
> S:      Maintained

Ah, thanks for the pointer.

I'll see if I can add
  F:      lib/atomic64_test.c
to that entry so this files owners get tracked properly.

Daniel