linux-kernel - RE: [PATCH v4 1/2] x86/resctrl: Pass domain to target CPU

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Date: Tue, 5 Mar 2024 00:17:03 +0000
From: "Luck, Tony" <tony.luck@...el.com>
To: "Chatre, Reinette" <reinette.chatre@...el.com>, "Yu, Fenghua"
	<fenghua.yu@...el.com>, Peter Newman <peternewman@...gle.com>, "Jonathan
 Corbet" <corbet@....net>, Shuah Khan <skhan@...uxfoundation.org>,
	"x86@...nel.org" <x86@...nel.org>
CC: Shaopeng Tan <tan.shaopeng@...itsu.com>, James Morse
	<james.morse@....com>, Jamie Iles <quic_jiles@...cinc.com>, Babu Moger
	<babu.moger@....com>, Randy Dunlap <rdunlap@...radead.org>, Drew Fustini
	<dfustini@...libre.com>, "linux-kernel@...r.kernel.org"
	<linux-kernel@...r.kernel.org>, "linux-doc@...r.kernel.org"
	<linux-doc@...r.kernel.org>, "patches@...ts.linux.dev"
	<patches@...ts.linux.dev>
Subject: RE: [PATCH v4 1/2] x86/resctrl: Pass domain to target CPU

> > +                   cpu = cpumask_any(&d->cpu_mask);
> >
>
> cpu only needs to be assigned once. How about initializing cpu to
> nr_cpu_ids at the same time msr_param.res and msr_param.dom is
> initialized and only assign it when msr_param.res is assigned?
> I think that will be more robust.
>
> If you agree and do this then please feel free to add:
> Reviewed-by: Reinette Chatre <reinette.chatre@...el.com>

Reinette,

I agree. I'll move the assignment to "cpu" outside the CDP_NUM_TYPES
loop.

Thanks for the review.

-Tony