linux-kernel - Re: [PATCH V3 04/11] um: Improve panic notifiers consistency and ordering

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Message-ID: <1f464f3d-6668-9e05-bcb7-1b419b5373e1@igalia.com>
Date:   Sun, 18 Sep 2022 11:00:36 -0300
From:   "Guilherme G. Piccoli" <gpiccoli@...lia.com>
To:     Johannes Berg <johannes@...solutions.net>,
        linux-um@...ts.infradead.org
Cc:     kexec@...ts.infradead.org, bhe@...hat.com, pmladek@...e.com,
        akpm@...ux-foundation.org, linux-kernel@...r.kernel.org,
        linux-hyperv@...r.kernel.org, netdev@...r.kernel.org,
        x86@...nel.org, kernel-dev@...lia.com, kernel@...ccoli.net,
        halves@...onical.com, fabiomirmar@...il.com,
        alejandro.j.jimenez@...cle.com, andriy.shevchenko@...ux.intel.com,
        arnd@...db.de, bp@...en8.de, corbet@....net,
        d.hatayama@...fujitsu.com, dave.hansen@...ux.intel.com,
        dyoung@...hat.com, feng.tang@...el.com, gregkh@...uxfoundation.org,
        mikelley@...rosoft.com, hidehiro.kawai.ez@...achi.com,
        jgross@...e.com, john.ogness@...utronix.de, keescook@...omium.org,
        luto@...nel.org, mhiramat@...nel.org, mingo@...hat.com,
        paulmck@...nel.org, peterz@...radead.org, rostedt@...dmis.org,
        senozhatsky@...omium.org, stern@...land.harvard.edu,
        tglx@...utronix.de, vgoyal@...hat.com, vkuznets@...hat.com,
        will@...nel.org, xuqiang36@...wei.com,
        Anton Ivanov <anton.ivanov@...bridgegreys.com>,
        Richard Weinberger <richard@....at>
Subject: Re: [PATCH V3 04/11] um: Improve panic notifiers consistency and
 ordering

On 19/08/2022 19:17, Guilherme G. Piccoli wrote:
> Currently the panic notifiers from user mode linux don't follow
> the convention for most of the other notifiers present in the
> kernel (indentation, priority setting, numeric return).
> More important, the priorities could be improved, since it's a
> special case (userspace), hence we could run the notifiers earlier;
> user mode linux shouldn't care much with other panic notifiers but
> the ordering among the mconsole and arch notifier is important,
> given that the arch one effectively triggers a core dump.
> 
> Fix that by running the mconsole notifier as the first panic
> notifier, followed by the architecture one (that coredumps).
> 
> Cc: Anton Ivanov <anton.ivanov@...bridgegreys.com>
> Cc: Johannes Berg <johannes@...solutions.net>
> Cc: Richard Weinberger <richard@....at>
> Signed-off-by: Guilherme G. Piccoli <gpiccoli@...lia.com>
> 
> V3:
> - No changes.
> [...]

Hi Johannes, sorry for the ping. Do you think you could pick this one?
Or if you prefer, I can resend it alone (not in the series) - let me
know your preference.

Thanks,


Guilherme