linux-kernel - Re: [PATCH V3 06/11] tracing: Improve panic/die notifiers

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Message-ID: <afe16869-d5de-2072-52ba-cde61181fc11@igalia.com>
Date:   Sun, 18 Sep 2022 11:04:49 -0300
From:   "Guilherme G. Piccoli" <gpiccoli@...lia.com>
To:     rostedt@...dmis.org, stern@...land.harvard.edu
Cc:     kexec@...ts.infradead.org, pmladek@...e.com,
        akpm@...ux-foundation.org, linux-kernel@...r.kernel.org,
        linux-hyperv@...r.kernel.org, netdev@...r.kernel.org,
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        halves@...onical.com, fabiomirmar@...il.com, bhe@...hat.com,
        alejandro.j.jimenez@...cle.com, andriy.shevchenko@...ux.intel.com,
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        d.hatayama@...fujitsu.com, dave.hansen@...ux.intel.com,
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        mikelley@...rosoft.com, hidehiro.kawai.ez@...achi.com,
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        luto@...nel.org, mhiramat@...nel.org, mingo@...hat.com,
        paulmck@...nel.org, peterz@...radead.org, senozhatsky@...omium.org,
        tglx@...utronix.de, vgoyal@...hat.com, vkuznets@...hat.com,
        will@...nel.org, xuqiang36@...wei.com,
        Sergei Shtylyov <sergei.shtylyov@...il.com>
Subject: Re: [PATCH V3 06/11] tracing: Improve panic/die notifiers

On 19/08/2022 19:17, Guilherme G. Piccoli wrote:
> Currently the tracing dump_on_oops feature is implemented through
> separate notifiers, one for die/oops and the other for panic;
> given they have the same functionality, let's unify them.
> 
> Also improve the function comment and change the priority of the
> notifier to make it execute earlier, avoiding showing useless trace
> data (like the callback names for the other notifiers); finally,
> we also removed an unnecessary header inclusion.
> 
> Cc: Petr Mladek <pmladek@...e.com>
> Cc: Sergei Shtylyov <sergei.shtylyov@...il.com>
> Cc: Steven Rostedt <rostedt@...dmis.org>
> Signed-off-by: Guilherme G. Piccoli <gpiccoli@...lia.com>
> 
> ---
> 
> V3:
> - Removed goto usage, as per Steven suggestion (thanks!).
> 
> V2:
> - Different approach; instead of using IDs to distinguish die and
> panic events, rely on address comparison like other notifiers do
> and as per Petr's suggestion;
> 
> - Removed ACK from Steven since the code changed.
> 
> [...]

Hi Steve, Alan - sorry for the ping (and I'm aware you're OOO Steve, saw
your auto-response email heh).

So, is this version good enough? Appreciate the reviews and in case it's
good, let me know your preference for picking it in your tree - I could
resend the patch alone if you prefer (not in the series), for example.

Thanks,


Guilherme