[PATCH v5] drm/syncobj: Extend EXPORT_SYNC_FILE for timeline syncobjs

[Dmitry Osipenko]

On 4/1/25 00:23, Rob Clark wrote:
> From: Rob Clark <robdclark at chromium.org>
> 
> Add support for exporting a dma_fence fd for a specific point on a
> timeline.  This is needed for vtest/vpipe[1][2] to implement timeline
> syncobj support, as it needs a way to turn a point on a timeline back
> into a dma_fence fd.  It also closes an odd omission from the syncobj
> UAPI.
> 
> [1] https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/33433
> [2] https://gitlab.freedesktop.org/virgl/virglrenderer/-/merge_requests/805
> 
> v2: Add DRM_SYNCOBJ_HANDLE_TO_FD_FLAGS_TIMELINE
> v3: Add unstaged uabi header hunk
> v4: Also handle IMPORT_SYNC_FILE case
> v5: Address comments from Dmitry
> 
> Signed-off-by: Rob Clark <robdclark at chromium.org>
> ---
>  drivers/gpu/drm/drm_syncobj.c | 45 +++++++++++++++++++++++++++--------
>  include/uapi/drm/drm.h        |  4 ++++
>  2 files changed, 39 insertions(+), 10 deletions(-)

Reviewed-by: Dmitry Osipenko <dmitry.osipenko at collabora.com>

-- 
Best regards,
Dmitry