linux-kernel - Re: [PATCH 12/12] cacheinfo: Set cache 'id' based on DT data

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Message-ID: <20211018133127.4oenrvzxwzn73s3k@bogus>
Date:   Mon, 18 Oct 2021 14:31:27 +0100
From:   Sudeep Holla <sudeep.holla@....com>
To:     Rob Herring <robh@...nel.org>
Cc:     Russell King <linux@...linux.org.uk>,
        James Morse <james.morse@....com>,
        Sudeep Holla <sudeep.holla@....com>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>, Guo Ren <guoren@...nel.org>,
        Jonas Bonn <jonas@...thpole.se>,
        Stefan Kristiansson <stefan.kristiansson@...nalahti.fi>,
        Stafford Horne <shorne@...il.com>,
        Michael Ellerman <mpe@...erman.id.au>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Palmer Dabbelt <palmer@...belt.com>,
        Albert Ou <aou@...s.berkeley.edu>,
        Yoshinori Sato <ysato@...rs.sourceforge.jp>,
        Rich Felker <dalias@...c.org>, x86@...nel.org,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Florian Fainelli <f.fainelli@...il.com>,
        Ray Jui <rjui@...adcom.com>,
        Scott Branden <sbranden@...adcom.com>,
        bcm-kernel-feedback-list@...adcom.com,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Paul Mackerras <paulus@...ba.org>,
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        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
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        "Rafael J. Wysocki" <rafael@...nel.org>,
        Frank Rowand <frowand.list@...il.com>,
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        linux-sh@...r.kernel.org, devicetree@...r.kernel.org
Subject: Re: [PATCH 12/12] cacheinfo: Set cache 'id' based on DT data

On Wed, Oct 06, 2021 at 11:43:32AM -0500, Rob Herring wrote:
> Use the minimum CPU h/w id of the CPUs associated with the cache for the
> cache 'id'. This will provide a stable id value for a given system. As
> we need to check all possible CPUs, we can't use the shared_cpu_map
> which is just online CPUs. As there's not a cache to CPUs mapping in DT,
> we have to walk all CPU nodes and then walk cache levels.
> 

Acked-by: Sudeep Holla <sudeep.holla@....com>

-- 
Regards,
Sudeep