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| author | Robert Foss <robert.foss@collabora.com> | 2018-11-12 17:51:55 +0100 |
|---|---|---|
| committer | Gerd Hoffmann <kraxel@redhat.com> | 2018-11-14 14:21:01 +0100 |
| commit | a56f9c868ccf56f0ab6e3e64693e6a39323bf8d8 (patch) | |
| tree | 49463608d3d2c42904f5258a98df290886baccd8 /tools/perf/scripts/python/mem-phys-addr.py | |
| parent | 9fdd90c0f42440b7f1e4a3f7262d222eee4b4cdf (diff) | |
drm/virtio: add uapi for in and out explicit fences
Add a new field called fence_fd that will be used by userspace to send
in-fences to the kernel and receive out-fences created by the kernel.
This uapi enables virtio to take advantage of explicit synchronization of
dma-bufs.
There are two new flags:
* VIRTGPU_EXECBUF_FENCE_FD_IN to be used when passing an in-fence fd.
* VIRTGPU_EXECBUF_FENCE_FD_OUT to be used when requesting an out-fence fd
The execbuffer IOCTL is now read-write to allow the userspace to read the
out-fence.
On error -1 should be returned in the fence_fd field.
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.com>
Signed-off-by: Robert Foss <robert.foss@collabora.com>
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20181112165157.32765-3-robert.foss@collabora.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Diffstat (limited to 'tools/perf/scripts/python/mem-phys-addr.py')
0 files changed, 0 insertions, 0 deletions