Le vendredi 15 janvier 2021 à 20:33 -0800, Fritz Koenig a écrit : > Hi, > > I'm trying to sort some issues with regards to decoding multiple > streams at once. Logging can be helpful with messages like this: > > [105188.500450] video2: VIDIOC_STREAMOFF: type=vid-out-mplane > > but when I have: > > [105188.498697] video2: VIDIOC_STREAMOFF: type=vid-out-mplane > [105188.498715] video2: VIDIOC_STREAMOFF: type=vid-cap-mplane > [105188.499116] video2: VIDIOC_UNSUBSCRIBE_EVENT: type=0x5, id=0x0, flags=0x0 > [105188.500450] video2: VIDIOC_STREAMOFF: type=vid-out-mplane > [105188.500467] video2: VIDIOC_STREAMOFF: type=vid-cap-mplane > [105188.500611] video2: VIDIOC_UNSUBSCRIBE_EVENT: type=0x5, id=0x0, flags=0x0 > [105188.501879] video2: VIDIOC_UNSUBSCRIBE_EVENT: type=0x5, id=0x0, flags=0x0 > [105188.502276] video2: VIDIOC_STREAMOFF: type=vid-out-mplane > [105188.502331] video2: VIDIOC_STREAMOFF: type=vid-cap-mplane > > I can't tell which stream VIDIOC_STREAMOFF is associated with. Is > there a logging option that I'm missing that would help indicate which > stream that ioctl is associated with. I suppose this is m2m driver ? I think it would be nice to trace some instance ID, otherwise indeed, if you have two stream on the same m2m device node, the traces get confused. > > Thanks. > > -Fritz
