linux-kernel - Re: [PATCH 04/12] arch_topology: Reset all cpus in reset_cpu

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Message-ID: <20200409101943.GC25948@bogus>
Date:   Thu, 9 Apr 2020 11:19:43 +0100
From:   Sudeep Holla <sudeep.holla@....com>
To:     Jiaxun Yang <jiaxun.yang@...goat.com>
Cc:     linux-mips@...r.kernel.org,
        Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
        Huacai Chen <chenhc@...ote.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        Arnaldo Carvalho de Melo <acme@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Jiri Olsa <jolsa@...hat.com>,
        Namhyung Kim <namhyung@...nel.org>,
        Florian Fainelli <f.fainelli@...il.com>,
        Robert Richter <rric@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        "Rafael J. Wysocki" <rafael@...nel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
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        Marc Zyngier <maz@...nel.org>,
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        周琰杰 (Zhou Yanjie) 
        <zhouyanjie@...yeetech.com>, YunQiang Su <syq@...ian.org>,
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        Mike Rapoport <rppt@...ux.ibm.com>,
        Kamal Dasu <kdasu.kdev@...il.com>,
        Sudeep Holla <sudeep.holla@....com>,
        Oleksij Rempel <linux@...pel-privat.de>,
        linux-kernel@...r.kernel.org,
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Subject: Re: [PATCH 04/12] arch_topology: Reset all cpus in reset_cpu_topology

On Wed, Apr 08, 2020 at 07:34:14PM +0800, Jiaxun Yang wrote:
> For MIPS platform, when topology isn't probed by DeviceTree,
> possible_cpu might be empty when calling init_cpu_topology,
> that may result cpu_topology not fully reseted for all CPUs.
> So here we can reset all cpus instead of possible cpus.
>

Why not set all CPUs upto NR_CPUS in possible cpus_mask as
default to begin with ?

-- 
Regards,
Sudeep