linux-kernel - Re: [PATCHv15 09/17] mm: Expose untagging mask in /proc/$PID/status

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Message-ID: <CAG_fn=WiZ+srz+TSR8QER1zZYLzq91h3y+0gDOd1f1L6dECL2w@mail.gmail.com>
Date:   Thu, 9 Feb 2023 15:13:55 +0100
From:   Alexander Potapenko <glider@...gle.com>
To:     "Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>
Cc:     Dave Hansen <dave.hansen@...ux.intel.com>,
        Andy Lutomirski <luto@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>, x86@...nel.org,
        Kostya Serebryany <kcc@...gle.com>,
        Andrey Ryabinin <ryabinin.a.a@...il.com>,
        Andrey Konovalov <andreyknvl@...il.com>,
        Taras Madan <tarasmadan@...gle.com>,
        Dmitry Vyukov <dvyukov@...gle.com>,
        "H . J . Lu" <hjl.tools@...il.com>,
        Andi Kleen <ak@...ux.intel.com>,
        Rick Edgecombe <rick.p.edgecombe@...el.com>,
        Bharata B Rao <bharata@....com>,
        Jacob Pan <jacob.jun.pan@...ux.intel.com>,
        Ashok Raj <ashok.raj@...el.com>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        linux-mm@...ck.org, linux-kernel@...r.kernel.org,
        Catalin Marinas <catalin.marinas@....com>
Subject: Re: [PATCHv15 09/17] mm: Expose untagging mask in /proc/$PID/status

On Mon, Jan 23, 2023 at 11:05 PM Kirill A. Shutemov
<kirill.shutemov@...ux.intel.com> wrote:
>
> Add a line in /proc/$PID/status to report untag_mask. It can be
> used to find out LAM status of the process from the outside. It is
> useful for debuggers.
>
> Signed-off-by: Kirill A. Shutemov <kirill.shutemov@...ux.intel.com>
> Acked-by: Catalin Marinas <catalin.marinas@....com>
> Acked-by: Peter Zijlstra (Intel) <peterz@...radead.org>
Tested-by: Alexander Potapenko <glider@...gle.com>