linux-kernel - Re: [PATCH] RISC-V: Show CPU ID and Hart ID separately in /proc/cpuinfo

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Message-ID: <CAAhSdy05S_GRbrBcnzt_3TL=Su+QYz8+addqXVumvxmANujRJg@mail.gmail.com>
Date:   Sun, 23 Sep 2018 18:34:38 +0530
From:   Anup Patel <anup@...infault.org>
To:     Christoph Hellwig <hch@...radead.org>
Cc:     Atish Patra <atish.patra@....com>,
        Palmer Dabbelt <palmer@...ive.com>,
        Albert Ou <aou@...s.berkeley.edu>,
        linux-riscv@...ts.infradead.org,
        "linux-kernel@...r.kernel.org List" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] RISC-V: Show CPU ID and Hart ID separately in /proc/cpuinfo

On Mon, Sep 17, 2018 at 7:40 PM Christoph Hellwig <hch@...radead.org> wrote:
>
> On Wed, Sep 12, 2018 at 09:47:55AM -0700, Atish Patra wrote:
> > The extra hart information will not be parsed by lscpu which will make the
> > cpu information inconsistent between lscpu & /proc/cpuinfo.
> >
> > Should we patch lscpu as well to show correct hart id as well ?
>
> It would be good to follow whatever prescedent other architectures
> with different logical vs physical cpuids have set.

Most architectures (x86, ARM, ARM64), display logical CPU id as
"processor" attribute. I think we should use same name for logical
CPU id.

Other attributes in /proc/cpuinfo are very different accros architectures.
For e.g. x86 shows physical CPU id as "core id"

I will revise this patch to use "processor" attribute name for
logical CPU id.

Regards,
Anup