diff options
| author |   Ezequiel Garcia <ezequiel@collabora.com> | 2018-06-15 15:07:30 -0400 |
|---|---|---|
| committer |   Mauro Carvalho Chehab <mchehab+samsung@kernel.org> | 2018-07-04 08:02:33 -0400 |
| commit | a4273abcd3e40f7e8fe9c5347dea1e0a6b9ccadb (patch) | |
| tree | 6518cfbc2944ef5f64bdee130dc65c5c913cc949 /tools/perf/scripts/python | |
| parent | media: davinci_vpfe: Add video_device and vb2_queue locks (diff) | |
media: mx_emmaprp: Implement wait_prepare and wait_finish
This driver is currently specifying a video_device lock,
which means it is protecting all the ioctls (including
queue ioctls) with a single mutex.
It's therefore straightforward to implement wait_prepare
and wait_finish, by explicitly setting the vb2_queue lock.
Having these callbacks releases the queue lock while blocking,
which improves latency by allowing for example streamoff
or qbuf operations while waiting in dqbuf.
Signed-off-by: Ezequiel Garcia <ezequiel@collabora.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Diffstat (limited to 'tools/perf/scripts/python')
0 files changed, 0 insertions, 0 deletions