linux-kernel - Re: [RFC][PATCH 3/3] kselftest: Add drm

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Date:   Tue, 12 Jul 2022 08:52:53 -0700
From:   John Stultz <jstultz@...gle.com>
To:     Christian König <christian.koenig@....com>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        Maxime Ripard <mripard@...nel.org>,
        Thomas Zimmermann <tzimmermann@...e.de>,
        Jason Ekstrand <jason@...kstrand.net>,
        Lionel Landwerlin <lionel.g.landwerlin@...el.com>,
        Chunming Zhou <david1.zhou@....com>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>, Shuah Khan <shuah@...nel.org>,
        dri-devel@...ts.freedesktop.org
Subject: Re: [RFC][PATCH 3/3] kselftest: Add drm_syncobj API test tool

On Tue, Jul 12, 2022 at 12:43 AM Christian König
<christian.koenig@....com> wrote:
> Am 12.07.22 um 06:22 schrieb John Stultz:
> > An initial pass at a drm_syncobj API test.
> >
> > Currently covers trivial use of:
> >    DRM_IOCTL_SYNCOBJ_CREATE
> >    DRM_IOCTL_SYNCOBJ_DESTROY
> >    DRM_IOCTL_SYNCOBJ_HANDLE_TO_FD
> >    DRM_IOCTL_SYNCOBJ_FD_TO_HANDLE
> >    DRM_IOCTL_SYNCOBJ_WAIT
> >    DRM_IOCTL_SYNCOBJ_RESET
> >    DRM_IOCTL_SYNCOBJ_SIGNAL
> >    DRM_IOCTL_SYNCOBJ_TIMELINE_WAIT
> >    DRM_IOCTL_SYNCOBJ_TIMELINE_SIGNAL
> >
> > And demonstrates how the userspace API can be used, along with
> > some fairly simple bad parameter checking.
> >
> > The patch includes a few helpers taken from libdrm, as at least
> > on the VM I was testing with, I didn't have a new enough libdrm
> > to support the *_TIMELINE_* ioctls. Ideally the ioctl-helper bits
> > can be dropped at a later time.
> >
> > Feedback would be appreciated!
>
> DRM userspace selftests usually go either into libdrm or igt and not
> into the kernel source.

Appreciate the pointer, I'll rework and submit to one of those projects.

thanks
-john