linux-kernel - Re: [PATCH] powerpc: Move arch_trigger_cpumask

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Date:   Thu, 22 Jun 2023 10:40:11 +0200
From:   Petr Mladek <pmladek@...e.com>
To:     Douglas Anderson <dianders@...omium.org>
Cc:     Andrew Morton <akpm@...ux-foundation.org>,
        Michael Ellerman <mpe@...erman.id.au>,
        Arnd Bergmann <arnd@...db.de>,
        Christophe Leroy <christophe.leroy@...roup.eu>,
        Laurent Dufour <ldufour@...ux.ibm.com>,
        Nicholas Piggin <npiggin@...il.com>,
        Stephen Rothwell <sfr@...b.auug.org.au>,
        Tom Rix <trix@...hat.com>, linux-kernel@...r.kernel.org,
        linuxppc-dev@...ts.ozlabs.org
Subject: Re: [PATCH] powerpc: Move arch_trigger_cpumask_backtrace from nmi.h
 to irq.h

On Wed 2023-06-21 16:48:19, Douglas Anderson wrote:
> The powerpc architecture was the only one that defined
> arch_trigger_cpumask_backtrace() in asm/nmi.h instead of
> asm/irq.h. Move it to be consistent.
> 
> This fixes compile time errors introduced by commit 7ca8fe94aa92
> ("watchdog/hardlockup: define HARDLOCKUP_DETECTOR_ARCH"). That commit

Will this commit end up in the mainline wihtout rebasing?
We could use only final commit hashes in the commit messages.

> caused <asm/nmi.h> to stop being included if the hardlockup detector
> wasn't enabled. The specific errors were:
>   error: implicit declaration of function ‘nmi_cpu_backtrace’
>   error: implicit declaration of function ‘nmi_trigger_cpumask_backtrace’
> 
> Fixes: 7ca8fe94aa92 ("watchdog/hardlockup: define HARDLOCKUP_DETECTOR_ARCH")
> Reported-by: Michael Ellerman <mpe@...erman.id.au>
> Closes: https://lore.kernel.org/r/871qi5otdh.fsf@mail.lhotse
> Signed-off-by: Douglas Anderson <dianders@...omium.org>

Looks like a reasonable solution:

Reviewed-by: Petr Mladek <pmladek@...e.com>

Thanks a lot for fixing the regression.

Best Regards,
Petr