linux-kernel - RE: [PATCH v20 00/18] Add support for Sub-NUMA cluster (SNC) systems

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Date: Fri, 14 Jun 2024 21:40:09 +0000
From: "Luck, Tony" <tony.luck@...el.com>
To: "babu.moger@....com" <babu.moger@....com>, "Chatre, Reinette"
	<reinette.chatre@...el.com>, "Yu, Fenghua" <fenghua.yu@...el.com>,
	"Wieczor-Retman, Maciej" <maciej.wieczor-retman@...el.com>, Peter Newman
	<peternewman@...gle.com>, James Morse <james.morse@....com>, Drew Fustini
	<dfustini@...libre.com>, Dave Martin <Dave.Martin@....com>
CC: "x86@...nel.org" <x86@...nel.org>, "linux-kernel@...r.kernel.org"
	<linux-kernel@...r.kernel.org>, "patches@...ts.linux.dev"
	<patches@...ts.linux.dev>
Subject: RE: [PATCH v20 00/18] Add support for Sub-NUMA cluster (SNC) systems

> We have ctrl_scope, mon_scope, ctrl_domains. mon_domains.  Only one 
> resource, RDT_RESOURCE_L3 is going to use these fields. Rest of the 
> resources don't need these fields. But these fields are part of all the 
> resources.
>
> I am not too worried about the size of the patch.  But, I don't foresee 
> these fields will be used anytime soon in these resources(MBA. L3. 
> SMBA). Why add it now? In future we may have to cleanup all these anyways.

Babu,

I mentioned yesterday that future patches could split struct rdt_resource. I was noodling
at doing so back in February. Patches (messy, not finished or fit for consumption) are
here (just to give you an idea where things might build from here):

git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux.git rdt_split_resource

-Tony