From: David Hildenbrand <david@redhat.com>
To: John Hubbard <jhubbard@nvidia.com>,
Muhammad Usama Anjum <usama.anjum@collabora.com>,
Mark Brown <broonie@kernel.org>
Cc: Suren Baghdasaryan <surenb@google.com>,
akpm@linux-foundation.org, viro@zeniv.linux.org.uk,
brauner@kernel.org, shuah@kernel.org, aarcange@redhat.com,
lokeshgidra@google.com, peterx@redhat.com, ryan.roberts@arm.com,
hughd@google.com, mhocko@suse.com, axelrasmussen@google.com,
rppt@kernel.org, willy@infradead.org, Liam.Howlett@oracle.com,
jannh@google.com, zhangpeng362@huawei.com, bgeffon@google.com,
kaleshsingh@google.com, ngeoffray@google.com, jdduke@google.com,
linux-mm@kvack.org, linux-fsdevel@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org,
kernel-team@android.com, Peter Zijlstra <peterz@infradead.org>
Subject: Re: [PATCH v6 5/5] selftests/mm: add UFFDIO_MOVE ioctl test
Date: Wed, 13 Dec 2023 10:59:01 +0100 [thread overview]
Message-ID: <783a4178-1dec-4e30-989a-5174b8176b09@redhat.com> (raw)
In-Reply-To: <926b42f9-3689-480f-8dd5-78fc0ee6088d@nvidia.com>
On 13.12.23 06:55, John Hubbard wrote:
> On 12/12/23 21:52, John Hubbard wrote:
>> On 12/12/23 19:58, Muhammad Usama Anjum wrote:
>>>> ...
>>>> Oh, this sounds like it would work nicely. No more "make headers"
>>>> required (hooray!). Instead, the new approach would be "selftests are
>>>> allowed to include from tools/include", and then we can just start
>>>> copying the files that we need to that location, and gradually fix up
>>>> all the selftests.
>>> No, this wouldn't work.
>>> * The selftests are applications which include default header files. The
>>> application don't care from where the header files are picked up at
>>> compile
>>> time. We should be able to build the application on normal system with
>>> latest headers installed without any changes.
>>> * The header files cannot be included directly as they need to be
>>> processed
>>> first which is done by `make headers`. Here is a diff between kernel fs.h
>>> and processed header file to be used by applications:
>>
>> Well, that's not the proposal. The idea is to snapshot various uapi/
>> headers
>> into tools/include, just like what is already being done:
>>
>> $ diff ./include/uapi/linux/fs.h ./tools/include/uapi/linux/fs.h
>> $
>
> Oh sorry, that's exactly what you were saying you don't want. ahem. :)
>
> Another variation though, would be to run "make headers", and snapshot
> some of those files into tools/include.
^ this is what I had in mind
If you're writing a test that needs some new fancy thing, update the
relevant header.
--
Cheers,
David / dhildenb
next prev parent reply other threads:[~2023-12-13 10:04 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-12-06 10:36 [PATCH v6 0/5] userfaultfd move option Suren Baghdasaryan
2023-12-06 10:36 ` [PATCH v6 1/5] mm/rmap: support move to different root anon_vma in folio_move_anon_rmap() Suren Baghdasaryan
2023-12-06 10:36 ` [PATCH v6 2/5] userfaultfd: UFFDIO_MOVE uABI Suren Baghdasaryan
2023-12-06 10:36 ` [PATCH v6 3/5] selftests/mm: call uffd_test_ctx_clear at the end of the test Suren Baghdasaryan
2023-12-06 10:36 ` [PATCH v6 4/5] selftests/mm: add uffd_test_case_ops to allow test case-specific operations Suren Baghdasaryan
2023-12-06 10:36 ` [PATCH v6 5/5] selftests/mm: add UFFDIO_MOVE ioctl test Suren Baghdasaryan
2023-12-10 14:23 ` Mark Brown
2023-12-11 1:01 ` Suren Baghdasaryan
2023-12-11 3:04 ` Suren Baghdasaryan
2023-12-11 11:15 ` Mark Brown
2023-12-11 12:03 ` David Hildenbrand
2023-12-11 12:24 ` Mark Brown
2023-12-11 16:15 ` Suren Baghdasaryan
2023-12-11 16:25 ` Mark Brown
2023-12-11 16:29 ` Suren Baghdasaryan
2023-12-11 16:34 ` Mark Brown
2023-12-11 16:43 ` Suren Baghdasaryan
2023-12-11 16:32 ` David Hildenbrand
2023-12-11 16:41 ` Mark Brown
2023-12-11 16:53 ` David Hildenbrand
2023-12-11 17:32 ` Mark Brown
2023-12-11 18:00 ` David Hildenbrand
2023-12-11 20:01 ` Mark Brown
2023-12-11 20:11 ` John Hubbard
2023-12-12 15:27 ` David Hildenbrand
2023-12-12 19:39 ` Mark Brown
2023-12-11 18:46 ` John Hubbard
2023-12-11 20:21 ` Mark Brown
2023-12-11 20:29 ` John Hubbard
2023-12-12 15:12 ` Mark Brown
2023-12-13 2:14 ` John Hubbard
2023-12-13 3:58 ` Muhammad Usama Anjum
2023-12-13 5:52 ` John Hubbard
2023-12-13 5:55 ` John Hubbard
2023-12-13 9:59 ` David Hildenbrand [this message]
2023-12-13 22:01 ` John Hubbard
2023-12-14 9:02 ` David Hildenbrand
2023-12-13 14:00 ` Mark Brown
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