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Date: Thu, 30 Jul 2026 15:50:21 -0700
From: Andrew Morton <akpm@linux-foundation.org>
To: mrungta@google.com
Cc: Mayank Rungta via B4 Relay <devnull+mrungta.google.com@kernel.org>, Wim
 Van Sebroeck <wim@linux-watchdog.org>, Guenter Roeck <linux@roeck-us.net>,
 Tzung-Bi Shih <tzungbi@kernel.org>, Douglas Anderson
 <dianders@chromium.org>, linux-kernel@vger.kernel.org,
 linux-watchdog@vger.kernel.org
Subject: Re: [PATCH 0/2] watchdog: pretimeout: Allow building dump governor
 as module
Message-Id: <20260730155021.8252ad9d155b472702e66755@linux-foundation.org>
In-Reply-To: <20260730-export-cpu-backtrace-apis-v1-0-bace8e1cb817@google.com>
References: <20260730-export-cpu-backtrace-apis-v1-0-bace8e1cb817@google.com>
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On Thu, 30 Jul 2026 15:00:20 -0700 Mayank Rungta via B4 Relay <devnull+mrungta.google.com@kernel.org> wrote:

> All other watchdog pretimeout governors (noop, panic) can be built as
> loadable modules. However the "dump" pretimeout governor is restricted
> to built-in code because it calls trigger_all_cpu_backtrace(), which
> relies on arch_trigger_cpumask_backtrace(), an arch specific helper that
> is not exported to loadable modules.
> 
> This 2-patch series allows building the dump governor as a module (=m):
> 1) Export cpumask_backtrace() in lib/nmi_backtrace.c.
> 2) Convert CONFIG_WATCHDOG_PRETIMEOUT_GOV_DUMP from bool to tristate.

LGTM.  Can you please redo against current mainline?  The Kconfig has
changed.