linux-kernel - Re: [PATCH v3 3/3] drm/doc: Add KUnit documentation

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Message-ID: <b16eba9c-30cc-c71f-ad95-eb5398f84af8@redhat.com>
Date:   Fri, 24 Jun 2022 23:18:40 +0200
From:   Javier Martinez Canillas <javierm@...hat.com>
To:     José Expósito <jose.exposito89@...il.com>,
        davidgow@...gle.com, dlatypov@...gle.com, tzimmermann@...e.de,
        maarten.lankhorst@...ux.intel.com, mripard@...nel.org,
        airlied@...ux.ie, jani.nikula@...ux.intel.com,
        dri-devel@...ts.freedesktop.org, kunit-dev@...glegroups.com,
        linux-kernel@...r.kernel.org, Maxime Ripard <maxime@...no.tech>
Subject: Re: [PATCH v3 3/3] drm/doc: Add KUnit documentation

Hello Daniel,

On 6/24/22 23:01, Daniel Vetter wrote:
> On Tue, Jun 14, 2022 at 02:58:29PM +0200, Javier Martinez Canillas wrote:
>> Hello José,
>>
>> On 6/13/22 19:17, José Expósito wrote:
>>
>> [snip]
>>
>>> +KUnit (Kernel unit testing framework) provides a common framework for unit tests
>>> +within the Linux kernel.
>>> +
>>
>> I think that it will be useful to have a reference to the KUnit kernel doc here,
>> something like the following:
>>
>> `KUnit <https://docs.kernel.org/dev-tools/kunit/index.html>`_ (Kernel Unit...
>>
>>> +This section covers the specifics for the DRM subsystem. For general information
>>> +about KUnit, please refer to Documentation/dev-tools/kunit/start.rst.
>>> +
>>> +How to run the tests?
>>> +~~~~~~~~~~~~~~~~~~~~~
>>> +
>>> +In order to facilitate running the test suite, a configuration file is present
>>> +in ``drivers/gpu/drm/kunit/.kunitconfig``. It can be used by ``kunit.py`` as
>>> +follows:
>>> +
>>> +.. code-block:: bash
>>> +
>>> +	$ ./tools/testing/kunit/kunit.py run --kunitconfig=drivers/gpu/drm/kunit \
>>> +		--kconfig_add CONFIG_VIRTIO_UML=y \
>>> +		--kconfig_add CONFIG_UML_PCI_OVER_VIRTIO=y
>>> +
>>> +.. note::
>>> +	The configuration included in ``.kunitconfig`` should be as generic as
>>> +	possible.
>>> +	``CONFIG_VIRTIO_UML`` and ``CONFIG_UML_PCI_OVER_VIRTIO`` are not
>>> +	included in it because they are only required for User Mode Linux.
>>> +
>>> +
>>
>> Maybe also add something like this ?
>>
>> For example, the following command can be used to run the test for x86_64:
>>
>> 	$ ./tools/testing/kunit/kunit.py run --kunitconfig=drivers/gpu/drm/kunit \
>> 		--arch=x86_64
>>
>> Regardless, the patch looks good to me:
>>
>> Reviewed-by: Javier Martinez Canillas <javierm@...hat.com>
> 
> Hey so since you have a bunch of patches merged into drm already but seem
> to lack drm-misc commit rights to push these yourself I think it's time to
> get those:
> 
> https://drm.pages.freedesktop.org/maintainer-tools/commit-access.html#drm-misc
>
> And I guess Javier can help you with any questions you might have and make
> sure the request gets through by poking folks on #dri-devel irc?
>

Yes, he already requested commit access and got the acks, so I think is
just a matter of time until he has this sorted out.

José, please don't hesitate to ask if you need any help or clarification
once you have a setup to push your patches. The dim documentation [0] is
superb but I know that it can be somewhat stressful the first time :)

[0]: https://drm.pages.freedesktop.org/maintainer-tools/dim.html
 -- 
Best regards,

Javier Martinez Canillas
Linux Engineering
Red Hat