linux-kernel - Re: [PATCH] sched: topology: make cache topology separate from cpu topology

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Message-ID: <Yi8WoC40tb8ulrmd@hirez.programming.kicks-ass.net>
Date:   Mon, 14 Mar 2022 11:19:12 +0100
From:   Peter Zijlstra <peterz@...radead.org>
To:     王擎 <wangqing@...o.com>
Cc:     Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>,
        Sudeep Holla <sudeep.holla@....com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        "Rafael J. Wysocki" <rafael@...nel.org>,
        Ingo Molnar <mingo@...hat.com>,
        Juri Lelli <juri.lelli@...hat.com>,
        Vincent Guittot <vincent.guittot@...aro.org>,
        Dietmar Eggemann <dietmar.eggemann@....com>,
        Steven Rostedt <rostedt@...dmis.org>,
        Ben Segall <bsegall@...gle.com>, Mel Gorman <mgorman@...e.de>,
        Daniel Bristot de Oliveira <bristot@...hat.com>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] sched: topology: make cache topology separate from cpu
 topology

On Mon, Mar 14, 2022 at 02:37:48AM +0000, 王擎 wrote:

> > If you want to represent L2, use the new fangled cluster level or
> > something, that's what it's there for.
> > 
> > That is, you can represent the above like:
> > 
> >        DIE:    0-7
> >        MC:     0-3,            4-7
> >         CLS:    0-1,1-2,        4-5,6-7
> > 
> > But if there is cache at MC, LLC is what it is.
> 
> There is no CLS support for LTS now, any plans to backport?

-ENOTMYPROBLEM