[PATCH RFC 2/5] cgroup: Add mechanism to register vendor specific DRM devices
tj at kernel.org
Tue Nov 20 22:30:18 UTC 2018
On Tue, Nov 20, 2018 at 10:21:14PM +0000, Ho, Kenny wrote:
> By this reply, are you suggesting that vendor specific resources
> will never be acceptable to be managed under cgroup? Let say a user
I wouldn't say never but whatever which gets included as a cgroup
controller should have clearly defined resource abstractions and the
control schemes around them including support for delegation. AFAICS,
gpu side still seems to have a long way to go (and it's not clear
whether that's somewhere it will or needs to end up).
> want to have similar functionality as what cgroup is offering but to
> manage vendor specific resources, what would you suggest as a
> solution? When you say keeping vendor specific resource regulation
> inside drm or specific drivers, do you mean we should replicate the
> cgroup infrastructure there or do you mean either drm or specific
> driver should query existing hierarchy (such as device or perhaps
> cpu) for the process organization information?
> To put the questions in more concrete terms, let say a user wants to
> expose certain part of a gpu to a particular cgroup similar to the
> way selective cpu cores are exposed to a cgroup via cpuset, how
> should we go about enabling such functionality?
Do what the intel driver or bpf is doing? It's not difficult to hook
into cgroup for identification purposes.
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