kernel: Add CONFIG_KERNEL_HARDLOCKUP_DETECTOR

[openwrt/openwrt.git] / config / Config-kernel.in

diff --git a/config/Config-kernel.in b/config/Config-kernel.in
index ad23b21479612797324e152ee5a72c2be2cfee42..c7b1864235bd5a4261cef84e50ec8983a89ab059 100644 (file)
--- a/config/Config-kernel.in
+++ b/config/Config-kernel.in
@@ -541,6 +541,18 @@ config KERNEL_SOFTLOCKUP_DETECTOR
          chance to run.  The current stack trace is displayed upon
          detection and the system will stay locked up.
 
+config KERNEL_HARDLOCKUP_DETECTOR
+       bool "Compile the kernel with detect Hard Lockups"
+       depends on KERNEL_DEBUG_KERNEL
+       help
+         Say Y here to enable the kernel to act as a watchdog to detect
+         hard lockups.
+
+         Hardlockups are bugs that cause the CPU to loop in kernel mode
+         for more than 10 seconds, without letting other interrupts have a
+         chance to run.  The current stack trace is displayed upon detection
+         and the system will stay locked up.
+
 config KERNEL_DETECT_HUNG_TASK
        bool "Compile the kernel with detect Hung Tasks"
        depends on KERNEL_DEBUG_KERNEL