From: Gustavo Padovan <gustavo.padovan@xxxxxxxxxxxxx> Hi, v7 bring a fix for a crash when not using fences and a uAPI fix. I've done a bit more of testing on it and also measured some performance. On a intel laptop a DRM<->V4L2 pipeline with fences is runnning twice as faster than the same pipeline with no fences. For more details on how fences work refer to patch 6 in this series. The test tools I've been using are: https://gitlab.collabora.com/padovan/drm-v4l2-test https://gitlab.collabora.com/padovan/v4l2-fences-test Please review, Gustavo Gustavo Padovan (6): [media] vb2: add is_unordered callback for drivers [media] v4l: add 'unordered' flag to format description ioctl [media] vb2: add explicit fence user API [media] vb2: add in-fence support to QBUF [media] vb2: add out-fence support to QBUF [media] v4l: Document explicit synchronization behavior Documentation/media/uapi/v4l/buffer.rst | 15 ++ Documentation/media/uapi/v4l/vidioc-enum-fmt.rst | 3 + Documentation/media/uapi/v4l/vidioc-qbuf.rst | 47 ++++- Documentation/media/uapi/v4l/vidioc-querybuf.rst | 9 +- drivers/media/common/videobuf/videobuf2-core.c | 253 +++++++++++++++++++++-- drivers/media/common/videobuf/videobuf2-v4l2.c | 51 ++++- drivers/media/v4l2-core/Kconfig | 33 +++ drivers/media/v4l2-core/v4l2-compat-ioctl32.c | 4 +- include/media/videobuf2-core.h | 41 +++- include/uapi/linux/videodev2.h | 8 +- 10 files changed, 437 insertions(+), 27 deletions(-) -- 2.14.3
