[RFC] Host1x/TegraDRM UAPI (drm_tegra_submit_syncpt_incr)

[Dmitry Osipenko]

23.06.2020 15:09, Mikko Perttunen пишет:
> struct drm_tegra_submit_syncpt_incr {
>         /*
>          * [in] Syncpoint FD of the syncpoint that the job will
>          *   increment.
>          */
>         __s32 syncpt_fd;
> 
>         /*
>          * [in] Number of increments that the job will do.
>          */
>         __u32 num_incrs;
> 
>         /*
>          * [out] Value the syncpoint will have once all increments have
>          *   executed.
>          */
>         __u32 fence_value;
> 
>         __u32 reserved[1];
> };

The job should be considered executed once the final sync point is
incremented.

Hence, there should be only one sync point per-job for increment, why
would you ever need more than one?

Could you please explain what this submit_syncpt_incr is about?