Re: [PATCH v2 0/5] kci-gitlab: Introducing GitLab-CI Pipeline for Kernel Testing

[Vignesh Raman <vignesh.raman@collabora.com>]

Hi Leo,

On 24/01/25 13:42, Laurent Pinchart wrote:
> On Fri, Jan 24, 2025 at 02:11:26AM -0300, Leonardo Brás wrote:
>> On Thu, 2025-01-23 at 19:23 +0530, Vignesh Raman wrote:
>>> This patch series introduces "kci-gitlab," a GitLab CI pipeline
>>> specifically designed for kernel testing. It provides kernel
>>> developers with an integrated, efficient, and flexible testing
>>> framework using GitLab's CI/CD capabilities. This patch includes
>>> a .gitlab-ci file in the tools/ci/gitlab-ci/ folder, along with
>>> additional YAML and script files, to define a basic test pipeline
>>> triggered by code pushes to a GitLab-CI instance.
>>> The initial version implements:
>>>      
>>> - Static checks: Includes checkpatch and smatch for code validation.
>>> - Build tests: Covers various architectures and configurations.
>>> - Boot tests: Utilizes virtme for basic boot testing.
>>>
>>> Additionally, it introduces a flexible "scenarios" mechanism to
>>> support subsystem-specific extensions.
>>>
>>> This series also introduces a drm scenario that adds a job to run IGT
>>> tests for vkms. This scenario includes helper scripts to build deqp-runner
>>> and IGT, leveraging approaches from the drm-ci/mesa-ci project.
>>>
>>> We are working towards creating a generic, upstream GitLab-CI pipeline
>>> (kci-gitlab) that will replace DRM-CI [1]. The proposed GitLab-CI pipeline
>>> is designed with a distributed infrastructure model, making it possible
>>> to run on any gitLab instance. We plan to leverage KernelCI [2] as the
>>> backend, utilizing its hardware, rootfs, test plans, and KCIDB [3]
>>> integration.
>>>
>>> For an example of a fully executed pipeline with drm scenario set,
>>> including documentation generation,
>>> see: https://gitlab.freedesktop.org/vigneshraman/kernel/-/pipelines/1350262
>>>
>>> Please refer to the documentation included in the patch, or check the
>>> rendered version, here:
>>> https://vigneshraman.pages.freedesktop.org/-/kernel/-/jobs/69787927/artifacts/artifacts/Documentation-output/ci/gitlab-ci/gitlab-ci.html
>>>
>>> Differences from v1 to v2:
>>> - moved to tools/ci as suggested by Linus on the previous version
>>> - add arm64 containers for native compilation
>>> - added boot tests using virtme: this is the base structure for boot tests,
>>>    next steps would be adding other tests such as kselftests/kunit tests
>>> - added DRM scenario testing on vkms: this should replace current vkms test
>>>    in drm-ci. This work shows how a test scenario can be used by different
>>>    subsystems to add their tests.
>>> - update documentation
>>>
>>> For more details on the motivation behind this work, please refer to the
>>> cover letter of v1: https://patchwork.kernel.org/project/linux-kselftest/cover/20240228225527.1052240-1-helen.koike@collabora.com/
>>>
>>> [1] https://www.collabora.com/news-and-blog/blog/2024/02/08/drm-ci-a-gitlab-ci-pipeline-for-linux-kernel-testing/
>>> [2] https://kernelci.org/
>>> [3] https://docs.kernelci.org/kcidb/
>>>
>>> Helen Koike (3):
>>>    kci-gitlab: Introducing GitLab-CI Pipeline for Kernel Testing
>>>    kci-gitlab: Add documentation
>>>    kci-gitlab: docs: Add images
>>>
>>> Vignesh Raman (2):
>>>    MAINTAINERS: Add an entry for ci automated testing
>>>    kci-gitlab: Add drm scenario
>>
>> Hi Vignesh Raman,
>> I am very happy to see this project going forward :)
>>
>> It's been a few years since I first thought on finding a good way of helping
>> kernel developers testing their patches, while making use of the free runner
>> minutes Gitlab offers. It can greatly simplify the testing for people who are
>> new to kernel development, or students trying to understand it better.
>>
>> And this patchset allows that to happen :)

Thanks for testing the patch and providing feedback.

>>
>> Actually, I spoke to Helen last year, and to enable it to run on the free
>> Gitlab-CI runners, there is a small extra patch which is needed:
>>
>> https://lore.kernel.org/all/20240327013055.139494-2-leobras@redhat.com/

Thanks for the patch.

We can keep the variable name as KCI_CI_TAGS (like other variables) and 
add it in variables with default empty string.

> 
> Gitlab as an open-source software project (the community edition) is one
> thing, but can we please avoid advertising specific proprietary services
> in the kernel documentation ?

Agree. We could remove the lines which mentions gitlab.com SaaS in
commit message and documentation.

> 
>> Could you please apply it on top of your tree?
>> Some stuff changed places, but I can send a v2 with that fix if you want.

I will test your patch and we can add this for v3.

Regards,
Vignesh

>>
>>
>> While I have yet to review this v2 patchset, I applied it on my repo for
>> testing, and cherry-picked the patch on above link, triggering a Pipeline:
>>
>> https://gitlab.com/linux-kernel/linux/-/pipelines/1638955600
>>
>> It seems to be working fine, please check it, as you may be more used to the
>> results.
>>
>> Thanks!
>> Leo
>