linux-kernel - Re: [PATCH] perf: Break deadlock involving exec_update

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Message-ID: <CAHk-=wgsvzafKL-_1V5NXMkS5CzYDnTP8Aev5SuZ=SA6e_m61A@mail.gmail.com>
Date:   Tue, 8 Dec 2020 10:37:20 -0800
From:   Linus Torvalds <torvalds@...ux-foundation.org>
To:     Peter Zijlstra <peterz@...radead.org>
Cc:     Bernd Edlinger <bernd.edlinger@...mail.de>,
        "Eric W. Biederman" <ebiederm@...ssion.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Ingo Molnar <mingo@...hat.com>, Will Deacon <will@...nel.org>,
        Jann Horn <jannh@...gle.com>,
        Vasiliy Kulikov <segoon@...nwall.com>,
        Al Viro <viro@...iv.linux.org.uk>,
        Oleg Nesterov <oleg@...hat.com>,
        Cyrill Gorcunov <gorcunov@...il.com>,
        Sargun Dhillon <sargun@...gun.me>,
        Christian Brauner <christian.brauner@...ntu.com>,
        Arnd Bergmann <arnd@...db.de>,
        Arnaldo Carvalho de Melo <acme@...nel.org>,
        Waiman Long <longman@...hat.com>,
        Davidlohr Bueso <dave@...olabs.net>
Subject: Re: [PATCH] perf: Break deadlock involving exec_update_mutex

On Tue, Dec 8, 2020 at 12:34 AM Peter Zijlstra <peterz@...radead.org> wrote:
>
> I suppose I'll queue the below into tip/perf/core for next merge window,
> unless you want it in a hurry?

LGTM, and there's no hurry. This is not a new thing, and I don't think
it has been a problem in practice.

            Linus