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Subject: Re: [PATCH v18 00/19] kunit: introduce KUnit, the Linux kernel unit
 testing framework
To: Steven Rostedt <rostedt@goodmis.org>,
 Linus Torvalds <torvalds@linux-foundation.org>
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From: shuah <shuah@kernel.org>
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Date: Mon, 7 Oct 2019 08:57:36 -0600
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CC: "Theodore Y. Ts'o" <tytso@mit.edu>, Brendan Higgins <brendanhiggins@google.com>, Frank Rowand <frowand.list@gmail.com>, Greg Kroah-Hartman <gregkh@linuxfoundation.org>, Josh Poimboeuf <jpoimboe@redhat.com>, Kees Cook <keescook@google.com>, Kieran Bingham <kieran.bingham@ideasonboard.com>, Luis Chamberlain <mcgrof@kernel.org>, Peter Zijlstra <peterz@infradead.org>, Rob Herring <robh@kernel.org>, Stephen Boyd <sboyd@kernel.org>, Masahiro Yamada <yamada.masahiro@socionext.com>, devicetree <devicetree@vger.kernel.org>, dri-devel <dri-devel@lists.freedesktop.org>, kunit-dev@googlegroups.com, "open list:DOCUMENTATION" <linux-doc@vger.kernel.org>, linux-fsdevel <linux-fsdevel@vger.kernel.org>, Linux Kbuild mailing list <linux-kbuild@vger.kernel.org>, Linux Kernel Mailing List <linux-kernel@vger.kernel.org>, "open list:KERNEL SELFTEST FRAMEWORK" <linux-kselftest@vger.kernel.org>, linux-nvdimm <linux-nvdimm@lists.01.org>, linux-um@lists.infradead.org, Sasha Levin <Alexander.Levin@microsof
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On 10/7/19 8:40 AM, Steven Rostedt wrote:
> On Sun, 6 Oct 2019 10:18:11 -0700
> Linus Torvalds <torvalds@linux-foundation.org> wrote:
> 
>> On Sun, Oct 6, 2019 at 9:55 AM Theodore Y. Ts'o <tytso@mit.edu> wrote:
>>>
>>> Well, one thing we *can* do is if (a) if we can create a kselftest
>>> branch which we know is stable and won't change, and (b) we can get
>>> assurances that Linus *will* accept that branch during the next merge
>>> window, those subsystems which want to use kself test can simply pull
>>> it into their tree.
>>
>> Yes.
>>
>> At the same time, I don't think it needs to be even that fancy. Even
>> if it's not a stable branch that gets shared between different
>> developers, it would be good to just have people do a "let's try this"
>> throw-away branch to use the kunit functionality and verify that
>> "yeah, this is fairly convenient for ext4".
>>
>> It doesn't have to be merged in that form, but just confirmation that
>> the infrastructure is helpful before it gets merged would be good.
> 
> Can't you just create an ext4 branch that has the kselftest-next branch
> in it, that you build upon. And push that after the kunit test is
> merged?
> 
> In the past I've had to rely on other branches in next, and would just
> hold two branches myself. One with everything not dependent on the other
> developer's branch, and one with the work that was. At the merge
> window, I would either merge the two or just send two pull requests
> with the two branches.
> 

I do something similar when I am working on top of a branch that isn't
already in the mainline. In any case, repeating myself

Let's work on top of - it is rebased to 5.4-rc1 and ready for use.

https://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest.git/log/?h=test

Let's use that for kunit work for 5.5. I won't add any kselftest patches
to it and keep it dedicated for kunit work. When tests are ready for
upstream, I can keep adding them to this branch.

thanks,
-- Shuah
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