Re: [PATCH v3 5/8] x86/resctrl: Add package scoped resource

[Tony Luck]

On Tue, Jul 18, 2023 at 01:43:45PM -0700, Reinette Chatre wrote:
> Hi Tony,
> 
> On 7/13/2023 9:32 AM, Tony Luck wrote:
> > Some Intel features require setting a package scoped model specific
> > register.
> > 
> > Add a new resource that builds domains for each package.
> 
> If I understand correctly the only purpose of this new resource
> is to know when the first CPU associated with a package
> comes online. Am I not reading this right? Using a resctrl resource
> for this purpose seems inappropriate and unnecessary while also
> making the code very hard to follow.

Reinette,

Yes. You understand.

I agree that this is blatant abuse of the resource structures.  I can find
another way to perform an action on the first CPU of a package online,
and the last CPU of a package offline.

-Tony