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From: Johannes Weiner <hannes-druUgvl0LCNAfugRpC6u6w@public.gmane.org>
Subject: Re: [PATCH 09/11] drm, cgroup: Introduce lgpu as DRM cgroup resource
Date: Wed, 19 Feb 2020 11:21:25 -0500
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To: Kenny Ho <y2kenny-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Cc: Tejun Heo <tj-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>, Daniel Vetter <daniel-/w4YWyX8dFk@public.gmane.org>, Jason Ekstrand <jason-fQELhIk9awXprZlt/sZkLg@public.gmane.org>, Kenny Ho <Kenny.Ho-5C7GfCeVMHo@public.gmane.org>, cgroups-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Maling list - DRI developers <dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org>, amd-gfx mailing list <amd-gfx-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org>, Alex Deucher <alexander.deucher-5C7GfCeVMHo@public.gmane.org>, Christian =?iso-8859-1?Q?K=F6nig?= <christian.koenig-5C7GfCeVMHo@public.gmane.org>, "Kuehling, Felix" <felix.kuehling-5C7GfCeVMHo@public.gmane.org>, "Greathouse, Joseph" <joseph.greathouse-5C7GfCeVMHo@public.gmane.org>, jsparks-WVYJKLFxKCc@public.gmane.org, lkaplan-WVYJKLFxKCc@public.gmane.org, nirmoy.das-5C7GfCeVMHo@public.gmane.org, damon.mcdougall-5C7GfCeVMHo@public.gmane.org, juan.zuniga-anaya-5C7GfCeVMHo@public.gmane.org

On Fri, Feb 14, 2020 at 03:28:40PM -0500, Kenny Ho wrote:
> On Fri, Feb 14, 2020 at 2:17 PM Tejun Heo <tj-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org> wrote:
> > Also, a rather trivial high level question. Is drm a good controller
> > name given that other controller names are like cpu, memory, io?
> 
> There was a discussion about naming early in the RFC (I believe
> RFCv2), the consensuses then was to use drmcg to align with the drm
> subsystem.  I have no problem renaming it to gpucg  or something
> similar if that is the last thing that's blocking acceptance.  For
> now, I would like to get some clarity on the implementation before
> having more code churn.

As far as precedence goes, we named the other controllers after the
resources they control rather than the subsystem: cpu instead of
scheduler, memory instead of mm, io instead of block layer etc.