[PATCH 0/2] watchdog: pretimeout: Allow building dump governor as module

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.

Signed-off-by: Mayank Rungta <[email protected]>
---
Mayank Rungta (2):
      nmi: Export CPU backtrace APIs for loadable modules
      watchdog: pretimeout: Convert dump pretimeout governor to tristate

 drivers/watchdog/Kconfig |  4 ++--
 include/linux/nmi.h      | 10 ++++++----
 lib/nmi_backtrace.c      |  7 +++++++
 3 files changed, 15 insertions(+), 6 deletions(-)
---
base-commit: 3fe08b9796f36ef437ab9328e7dd1e5ff2d66603
change-id: 20260728-export-cpu-backtrace-apis-136d3b819377

Best regards,
-- 
Mayank Rungta <[email protected]>