[RFC] Add BPF_PROG_TYPE_CGROUP_IOCTL

[Kenny Ho]

Sorry for the late reply (I have been working on other stuff.)

On Fri, Feb 5, 2021 at 8:49 AM Daniel Vetter <daniel at ffwll.ch> wrote:
>
> So I agree that on one side CU mask can be used for low-level quality
> of service guarantees (like the CLOS cache stuff on intel cpus as an
> example), and that's going to be rather hw specific no matter what.
>
> But my understanding of AMD's plans here is that CU mask is the only
> thing you'll have to partition gpu usage in a multi-tenant environment
> - whether that's cloud or also whether that's containing apps to make
> sure the compositor can still draw the desktop (except for fullscreen
> ofc) doesn't really matter I think.
This is not correct.  Even in the original cgroup proposal, it
supports both mask and count as a way to define unit(s) of sub-device.
For AMD, we already have SRIOV that supports GPU partitioning in a
time-sliced-of-a-whole-GPU fashion.

Kenny