Re: [PATCH 1/2] nmi: Export CPU backtrace APIs for loadable modules

[Guenter Roeck]

On Thu, Jul 30, 2026 at 03:00:21PM -0700, Mayank Rungta wrote:
> From: Mayank Rungta <mrungta@xxxxxxxxxx>
> 
> Currently, CPU backtrace functions cannot be called from loadable
> modules because the underlying helper arch_trigger_cpumask_backtrace()
> is not exported.
> 
> Instead of exporting arch_trigger_cpumask_backtrace() individually
> across every supported architecture, introduce and export a common
> helper, cpumask_backtrace(), in lib/nmi_backtrace.c. Update the four
> inline CPU backtrace macros in include/linux/nmi.h to route through this
> centralized helper.
> 
> Signed-off-by: Mayank Rungta <mrungta@xxxxxxxxxx>
> Reviewed-by: Douglas Anderson <dianders@xxxxxxxxxxxx>
> Reviewed-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>

Applied.

Thanks,
Guenter