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From: shuah <shuah@kernel.org>
To: Brendan Higgins <brendanhiggins@google.com>,
	Linus Torvalds <torvalds@linux-foundation.org>
Cc: "Theodore Y. Ts'o" <tytso@mit.edu>,
	Frank Rowand <frowand.list@gmail.com>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Josh Poimboeuf <jpoimboe@redhat.com>,
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	Peter Zijlstra <peterz@infradead.org>,
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	Masahiro Yamada <yamada.masahiro@socionext.com>,
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	linux-um@lists.infradead.org,
	Sasha Levin <Alexander.Levin@microsoft.com>,
	"Bird, Timothy" <Tim.Bird@sony.com>,
	 Amir Goldstein <amir73il@gmail.com>,
	Dan Carpenter <dan.carpenter@oracle.com>,
	Daniel Vetter <daniel@ffwll.ch>, Jeff Dike <jdike@addtoit.com>,
	Joel Stanley <joel@jms.id.au>,
	Julia Lawall <julia.lawall@lip6.fr>,
	Kevin Hilman <khilman@baylibre.com>,
	Knut Omang <knut.omang@oracle.com>,
	Michael Ellerman <mpe@ellerman.id.au>,
	Petr Mladek <pmladek@suse.com>,
	Randy Dunlap <rdunlap@infradead.org>,
	Richard Weinberger <richard@nod.at>,
	David Rientjes <rientjes@google.com>,
	Steven Rostedt <rostedt@goodmis.org>,
	wfg@linux.intel.com, shuah <shuah@kernel.org>
Subject: Re: [PATCH v18 00/19] kunit: introduce KUnit, the Linux kernel unit testing framework
Date: Mon, 7 Oct 2019 08:42:36 -0600	[thread overview]
Message-ID: <ed26ac47-7f27-c3ec-56ae-8b3b9aa87654@kernel.org> (raw)
In-Reply-To: <CAFd5g45djTX+FaXwn2abve1+6GbtNrv+8EJgDe_TXn1d+pzukA@mail.gmail.com>

On 10/7/19 2:40 AM, Brendan Higgins wrote:
> On Sun, Oct 6, 2019 at 10:18 AM 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.
> 
> I thought we already had done this satisfactorily.
> 
Adding a couple more tests will only help in the long run. The idea is
to see can this help

> We have one proof-of-concept test in the branch in the kselftest repo
> (proc sysctl test) that went out in the pull request, and we also had
> some other tests that were not in the pull request (there is the ext4
> timestamp stuff mentioned above, and we also had one against the list
> data structure), which we were planning on sending out for review once
> Shuah's pull request was accepted. I know the apparmor people also
> wrote some tests that they said were useful; however, I have not
> coordinated with them on upstreaming their tests. I know of some other
> people who are using it, but I don't think the tests are as far along
> for upstreaming.
> 

Maybe that is a good start. To get the tests that are already in use
and get them in shape for upstream.

> The point is: I thought we had plenty of signal that KUnit would be
> useful to have merged into the mainline kernel. I thought the only
> reason it was rejected for 5.4 was due to the directory name issue
> combined with bad timing.
> 

That is probably the initial thought. However, it makes perfect sense
to add a couple of tests in. We have a few weeks anyway and it gives
us more confidence on kunit.

I already have a branch that is in linux-next and it just has kunit in
it and I will rebase it to 5.4-rc1.

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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  reply	other threads:[~2019-10-07 14:42 UTC|newest]

Thread overview: 47+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-09-23  9:02 [PATCH v18 00/19] kunit: introduce KUnit, the Linux kernel unit testing framework Brendan Higgins
2019-09-23  9:02 ` [PATCH v18 01/19] kunit: test: add KUnit test runner core Brendan Higgins
2019-09-23  9:02 ` [PATCH v18 02/19] kunit: test: add test resource management API Brendan Higgins
2019-09-23  9:02 ` [PATCH v18 03/19] kunit: test: add string_stream a std::stream like string builder Brendan Higgins
2019-09-23  9:02 ` [PATCH v18 04/19] kunit: test: add assertion printing library Brendan Higgins
2019-09-23  9:02 ` [PATCH v18 05/19] kunit: test: add the concept of expectations Brendan Higgins
2019-09-23  9:02 ` [PATCH v18 06/19] lib: enable building KUnit in lib/ Brendan Higgins
2019-09-23 15:35   ` Stephen Boyd
2019-09-23  9:02 ` [PATCH v18 07/19] kunit: test: add initial tests Brendan Higgins
2019-09-23  9:02 ` [PATCH v18 08/19] objtool: add kunit_try_catch_throw to the noreturn list Brendan Higgins
2019-09-23  9:02 ` [PATCH v18 09/19] kunit: test: add support for test abort Brendan Higgins
2019-09-23  9:02 ` [PATCH v18 10/19] kunit: test: add tests for kunit " Brendan Higgins
2019-09-23  9:02 ` [PATCH v18 11/19] kunit: test: add the concept of assertions Brendan Higgins
2019-09-23  9:02 ` [PATCH v18 12/19] kunit: test: add tests for KUnit managed resources Brendan Higgins
2019-09-23  9:02 ` [PATCH v18 13/19] kunit: tool: add Python wrappers for running KUnit tests Brendan Higgins
2019-09-23  9:02 ` [PATCH v18 14/19] kunit: defconfig: add defconfigs for building " Brendan Higgins
2019-09-23  9:02 ` [PATCH v18 15/19] Documentation: kunit: add documentation for KUnit Brendan Higgins
2019-09-23 15:47   ` Randy Dunlap
2019-09-23 18:06     ` Brendan Higgins
2019-09-23 19:49       ` Randy Dunlap
2019-09-23 21:18         ` shuah
2019-09-23 21:30           ` Randy Dunlap
2019-09-24  0:51   ` Randy Dunlap
2019-09-23  9:02 ` [PATCH v18 16/19] MAINTAINERS: add entry for KUnit the unit testing framework Brendan Higgins
2019-09-23  9:02 ` [PATCH v18 17/19] kernel/sysctl-test: Add null pointer test for sysctl.c:proc_dointvec() Brendan Higgins
2019-09-23  9:02 ` [PATCH v18 18/19] MAINTAINERS: add proc sysctl KUnit test to PROC SYSCTL section Brendan Higgins
2019-09-23  9:02 ` [PATCH v18 19/19] kunit: fix failure to build without printk Brendan Higgins
2019-10-04 21:38 ` [PATCH v18 00/19] kunit: introduce KUnit, the Linux kernel unit testing framework Theodore Y. Ts'o
2019-10-04 21:42   ` Linus Torvalds
2019-10-04 21:59     ` shuah
2019-10-04 22:27       ` Brendan Higgins
2019-10-04 22:47         ` shuah
2019-10-04 23:10           ` Brendan Higgins
2019-10-04 23:15             ` shuah
2019-10-04 23:29           ` Theodore Y. Ts'o
2019-10-04 23:52             ` Brendan Higgins
2019-10-04 23:57               ` shuah
2019-10-05  0:33                 ` Brendan Higgins
2019-10-05  0:49                   ` shuah
2019-10-05  1:18                     ` Brendan Higgins
2019-10-06 16:54                       ` Theodore Y. Ts'o
2019-10-06 17:18                         ` Linus Torvalds
2019-10-07  8:40                           ` Brendan Higgins
2019-10-07 14:42                             ` shuah [this message]
2019-10-07 14:40                           ` Steven Rostedt
2019-10-07 14:57                             ` shuah
2019-10-07  8:20                         ` Brendan Higgins

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