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-rw-r--r--lib/Kconfig.debug12
1 files changed, 12 insertions, 0 deletions
diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index 935248b..220ae60 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