Re: [PATCH 1/1] drm/format-helper: Add KUnit tests for drm_fb_xrgb8888_to_rgb332()
From: Maxime Ripard
Date: Mon Jun 06 2022 - 09:52:30 EST
hi,
On Mon, Jun 06, 2022 at 03:49:57PM +0200, Javier Martinez Canillas wrote:
> Hello Maxime,
>
> On 6/6/22 15:42, Maxime Ripard wrote:
> > Hi,
> >
> > On Mon, Jun 06, 2022 at 11:55:16AM +0200, José Expósito wrote:
> >> Test the conversion from XRGB8888 to RGB332.
> >>
> >> What is tested?
> >>
> >> - Different values for the X in XRGB8888 to make sure it is ignored
> >> - Different clip values: Single pixel and full and partial buffer
> >> - Well known colors: White, black, red, green, blue, magenta, yellow
> >> and cyan
> >> - Other colors: Randomly picked
> >> - Destination pitch
> >>
> >> How to run the tests?
> >>
> >> $ ./tools/testing/kunit/kunit.py run --kunitconfig=drivers/gpu/drm \
> >> --kconfig_add CONFIG_VIRTIO_UML=y \
> >> --kconfig_add CONFIG_UML_PCI_OVER_VIRTIO=y
> >
> > It's not clear to me why you would need VIRTIO here? The Kunit config
> > file should be enough to run the tests properly
> >
>
> It's needed or otherwise KUnit will complain with:
>
> ./tools/testing/kunit/kunit.py run --kunitconfig=drivers/gpu/drm/.kunitconfig
> [15:47:31] Configuring KUnit Kernel ...
> Regenerating .config ...
> Populating config with:
> $ make ARCH=um O=.kunit olddefconfig
> ERROR:root:Not all Kconfig options selected in kunitconfig were in the generated .config.
> This is probably due to unsatisfied dependencies.
> Missing: CONFIG_DRM=y, CONFIG_DRM_KUNIT_TEST=y
> Note: many Kconfig options aren't available on UML. You can try running on a different architecture with something like "--arch=x86_64".
>
> The following works correctly but it won't use User Mode Linux:
>
> ./tools/testing/kunit/kunit.py run --kunitconfig=drivers/gpu/drm/.kunitconfig --arch=x86_64
But then, can't we add them to .kunitconfig?
We should avoid that gotcha entirely
Maxime
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