On 9/9/20 4:24 AM, Dmitry Osipenko wrote:
09.09.2020 04:13, Dmitry Osipenko пишет:
...
How many sync points would use an average job? Maybe it should be better
to have the predefined array of sync points within the struct
drm_tegra_channel_submit?
The same question regarding the commands.
Wouldn't it be a good idea to make both usrptr arrays of sync points and
commands optional by having a small fixed-size buffers within
drm_tegra_channel_submit? Then a majority of jobs would only need to
copy the gather data from userspace.
Sure, I'll look into it. For syncpoints, it would be usually 1 but
sometimes 2, so maybe make it 2. For commands, at least for downstream
it would typically be 2 (one wait and one gather). Any opinion from
grate-driver's point of view? Not sure if there is any recommendation
regarding the max size of IOCTL data.
Mikko
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