linux-kernel - Re: [PATCH v4] selftests/mm: add process

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Message-ID: <aHDFzeSJlh8caDQX@finisterre.sirena.org.uk>
Date: Fri, 11 Jul 2025 09:05:33 +0100
From: Mark Brown <broonie@...nel.org>
To: Zi Yan <ziy@...dia.com>
Cc: wang lian <lianux.mm@...il.com>, akpm@...ux-foundation.org,
	lorenzo.stoakes@...cle.com, david@...hat.com, sj@...nel.org,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org,
	linux-kselftest@...r.kernel.org, shuah@...nel.org,
	Liam.Howlett@...cle.com, brauner@...nel.org, gkwang@...x-info.com,
	jannh@...gle.com, p1ucky0923@...il.com, ryncsn@...il.com,
	vbabka@...e.cz, zijing.zhang@...ton.me
Subject: Re: [PATCH v4] selftests/mm: add process_madvise() tests

On Thu, Jul 10, 2025 at 12:21:36PM -0400, Zi Yan wrote:
> On 10 Jul 2025, at 9:42, Mark Brown wrote:
> > On Thu, Jul 10, 2025 at 07:22:49PM +0800, wang lian wrote:

> >> +#include <linux/pidfd.h>
> >> +#include <linux/uio.h>

> > Does this work without 'make headers_install' for the systems that were
> > affectd by missing headers?  Lorenzo mentioned that we shouldn't depend
> > on that for the mm tests (I'm not enthusiastic about that approach
> > myself, but if it's what mm needs).

> No. “make headers_install” is still needed. I tried to get it compiled
> without it but failed. It seems that a lot of files will need to be
> copied to tools/include from “make headers”.

If you're doing that it should again be a separate patch.  Another
option if it's just a few defines or something is to copy just them into
your program.

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