1 files changed, 12 insertions, 0 deletions

diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index 935248bdbc47..220ae6063b6f 100644
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -171,6 +171,18 @@ config DETECT_SOFTLOCKUP
            can be detected via the NMI-watchdog, on platforms that
            support it.)
 
+config NMI_WATCHDOG
+        bool "Detect Hard Lockups with an NMI Watchdog"
+        depends on DEBUG_KERNEL && PERF_EVENTS && PERF_EVENTS_NMI
+        help
+          Say Y here to enable the kernel to use the NMI as a watchdog
+          to detect hard lockups.  This is useful when a cpu hangs for no
+          reason but can still respond to NMIs.  A backtrace is displayed
+          for reviewing and reporting.
+
+          The overhead should be minimal, just an extra NMI every few
+          seconds.
+
 config BOOTPARAM_SOFTLOCKUP_PANIC
         bool "Panic (Reboot) On Soft Lockups"
         depends on DETECT_SOFTLOCKUP