23.06.2020 15:09, Mikko Perttunen пишет:
> struct drm_tegra_channel_submit {
> __u32 channel_id;
> __u32 flags;
>
> /**
> * [in] Timeout in microseconds after which the kernel may
> * consider the job to have hung and may reap it and
> * fast-forward its syncpoint increments.
> *
> * The value may be capped by the kernel.
> */
> __u32 timeout;
>
> __u32 num_syncpt_incrs;
> __u32 num_relocations;
> __u32 num_commands;
>
> __u64 syncpt_incrs;
> __u64 relocations;
> __u64 commands;
Do we really need to retain the multi-gather support? The code-bloat
(both userspace and kernel driver) is very significant just for
preparing and patching of the multi-buffer cmdstreams.
If userspace runs out of a free space within the pushbuffer, then it
should simply reallocate a larger pushbuffer.
I'm suggesting that we should have a single gather per-job, any objections?
