linux-kernel - Re: [PATCH v3 3/3] selftests: pidfd: add tests for PIDFD_SELF

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Message-ID: <3000d8ee-7660-4097-aa8b-2c254c82c4ce@lucifer.local>
Date: Tue, 6 May 2025 10:28:00 +0100
From: Lorenzo Stoakes <lorenzo.stoakes@...cle.com>
To: Christian Brauner <brauner@...nel.org>
Cc: Peter Zijlstra <peterz@...radead.org>, John Hubbard <jhubbard@...dia.com>,
        Shuah Khan <skhan@...uxfoundation.org>,
        Christian Brauner <christian@...uner.io>,
        Shuah Khan <shuah@...nel.org>,
        "Liam R . Howlett" <Liam.Howlett@...cle.com>,
        Suren Baghdasaryan <surenb@...gle.com>,
        Vlastimil Babka <vbabka@...e.cz>, pedro.falcato@...il.com,
        linux-kselftest@...r.kernel.org, linux-mm@...ck.org,
        linux-fsdevel@...r.kernel.org, linux-api@...r.kernel.org,
        linux-kernel@...r.kernel.org, Oliver Sang <oliver.sang@...el.com>,
        seanjc@...gle.com
Subject: Re: [PATCH v3 3/3] selftests: pidfd: add tests for PIDFD_SELF_*

On Mon, May 05, 2025 at 03:35:13PM +0200, Christian Brauner wrote:
> I'm completely lost as to what's happening here or whether the test here
> is somehow at fault for something.
>
> The pidfd.h head explicitly has no dependency on the pidfd uapi header
> itself and I will NAK anything that makes it so. It's just a giant pain.

There was a debate in my series here about my having to make things work with
'make headers', but thanks to John we resolved it the sane way by using the
tools/ stuff.

I _believe_ Peter is just using this thread as an example of a recent case of
people being asked to do this insanity (correct me if I'm wrong Peter) and it's
unrelated to pidfs in general.