linux-kernel - Re: [PATCH 4.14 00/95] 4.14.4-stable review

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Date:   Wed, 6 Dec 2017 20:11:26 +0530
From:   Sumit Semwal <sumit.semwal@...aro.org>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     Tom Gall <tom.gall@...aro.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Guenter Roeck <linux@...ck-us.net>,
        Shuah Khan <shuahkh@....samsung.com>, patches@...nelci.org,
        Ben Hutchings <ben.hutchings@...ethink.co.uk>,
        lkft-triage@...ts.linaro.org,
        linux- stable <stable@...r.kernel.org>
Subject: Re: [PATCH 4.14 00/95] 4.14.4-stable review

Hi Greg,

On 5 December 2017 at 11:54, Greg Kroah-Hartman
<gregkh@...uxfoundation.org> wrote:
> On Mon, Dec 04, 2017 at 03:12:45PM -0600, Tom Gall wrote:
>>
>>
>> > On Dec 4, 2017, at 9:59 AM, Greg Kroah-Hartman <gregkh@...uxfoundation.org> wrote:
>> >
>> > This is the start of the stable review cycle for the 4.14.4 release.
>> > There are 95 patches in this series, all will be posted as a response
>> > to this one.  If anyone has any issues with these being applied, please
>> > let me know.
>> >
>> > Responses should be made by Wed Dec  6 16:00:27 UTC 2017.
>> > Anything received after that time might be too late.
>> >
>> > The whole patch series can be found in one patch at:
>> >     kernel.org/pub/linux/kernel/v4.x/stable-review/patch-4.14.4-rc1.gz
>> > or in the git tree and branch at:
>> >  git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-4.14.y
>> > and the diffstat can be found below.
>> >
>> > thanks,
>> >
>> > greg k-h
>> >
>>
>> Compiled, booted and ran the following package unit tests without regressions on x86_64
>>
>> boringssl :
>>    go test target:0/0/5764/5764/5764 PASS
>>    ssl_test : 10 pass
>>    crypto_test : 28 pass
>> e2fsprogs:
>>    make check : 340 pass
>> sqlite
>>    make test : 143914 pass
>> drm
>>    make check : 15 pass
>>    modetest, drmdevice : pass
>> alsa-lib
>>    make check : 2 pass
>> bluez
>>    make check : 25 pass
>> libusb
>>    stress : 4 pass
>
> How do the above tests stress the kernel?  Aren't they just
> verifications that the source code in the package is correct?
>
> I guess it proves something, but have you ever seen the above regress in
> _any_ kernel release?
>
> I know the drm developers have a huge test suite that they use to verify
> their kernel changes, why not use that?

Are you referring to the igt-gpu-tools [1]? They also have a CI [2]
that runs these tests, but almost 98% of the tests are i915 specific /
can be only tested on i915 for now. Though I have chatted with Daniel
V a couple of times, and we do see a good scope of collaboration in
getting these tested on ARM as well.

Also, these are drm-specific tests, not testing generic kernel
features per-se. Just my 2 cents here.
>
> thanks,
>
> greg k-h

Best,
Sumit

[1]: https://cgit.freedesktop.org/drm/igt-gpu-tools
[2]: https://intel-gfx-ci.01.org