linux-kernel - [PATCH 0/2] Fix selftests/mm build without requiring "make headers"

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Message-ID: <20240328033418.203790-1-jhubbard@nvidia.com>
Date: Wed, 27 Mar 2024 20:34:16 -0700
From: John Hubbard <jhubbard@...dia.com>
To: Andrew Morton <akpm@...ux-foundation.org>
CC: David Hildenbrand <david@...hat.com>, Peter Xu <peterx@...hat.com>, "Shuah
 Khan" <shuah@...nel.org>, Axel Rasmussen <axelrasmussen@...gle.com>, "Andrea
 Arcangeli" <aarcange@...hat.com>, <linux-mm@...ck.org>,
	<linux-kselftest@...r.kernel.org>, LKML <linux-kernel@...r.kernel.org>, "John
 Hubbard" <jhubbard@...dia.com>, Mark Brown <broonie@...nel.org>, "Muhammad
 Usama Anjum" <usama.anjum@...labora.com>, Suren Baghdasaryan
	<surenb@...gle.com>, Peter Zijlstra <peterz@...radead.org>
Subject: [PATCH 0/2] Fix selftests/mm build without requiring "make headers"

Hi,

As mentioned in each patch, this implements the solution that we discussed in
December 2023, in [1]. This turned out to be very clean and easy. It should also
be quite easy to maintain.

This should also make Peter Zijlstra happy, because it directly addresses the
root cause of his "NAK NAK NAK" reply [2]. :)

I haven't done much build testing, because selftests are not so easy to build
with a cross-compiler. So it's just tested on x86 64-bit so far.

[1] https://lore.kernel.org/all/783a4178-1dec-4e30-989a-5174b8176b09@redhat.com/
[2] https://lore.kernel.org/lkml/20231103121652.GA6217@noisy.programming.kicks-ass.net/

Cc: David Hildenbrand <david@...hat.com>
Cc: Mark Brown <broonie@...nel.org>
Cc: Muhammad Usama Anjum <usama.anjum@...labora.com>
Cc: Suren Baghdasaryan <surenb@...gle.com>
Cc: Peter Zijlstra <peterz@...radead.org>

John Hubbard (2):
  selftests: break the dependency upon local header files
  selftests/mm: fix additional build errors for selftests

 tools/include/uapi/linux/memfd.h       |  39 +++
 tools/include/uapi/linux/userfaultfd.h | 386 +++++++++++++++++++++++++
 tools/testing/selftests/lib.mk         |   9 +
 tools/testing/selftests/mm/Makefile    |   2 +-
 4 files changed, 435 insertions(+), 1 deletion(-)
 create mode 100644 tools/include/uapi/linux/memfd.h
 create mode 100644 tools/include/uapi/linux/userfaultfd.h


base-commit: 98560e9019851bf55b8a4073978a623a3bcf98c0
-- 
2.44.0