kernel: Add CONFIG_KERNEL_HARDLOCKUP_DETECTOR

Make it possible to change the kernel configuration option
CONFIG_HARDLOCKUP_DETECTOR from OpenWrt.

Signed-off-by: Hauke Mehrtens <hmehrtens@maxlinear.com>

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.
 
          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
 config KERNEL_DETECT_HUNG_TASK
        bool "Compile the kernel with detect Hung Tasks"
        depends on KERNEL_DEBUG_KERNEL

diff --git a/target/linux/generic/config-5.15 b/target/linux/generic/config-5.15
index eab04238783ecbaa141e3a3a97e62c653b08326b..3374c239e2e8ea6d6f5019acf159410f5804adee 100644 (file)
--- a/target/linux/generic/config-5.15
+++ b/target/linux/generic/config-5.15
@@ -711,6 +711,7 @@ CONFIG_BLOCK=y
 # CONFIG_BONDING is not set
 # CONFIG_BOOKE_WDT is not set
 CONFIG_BOOKE_WDT_DEFAULT_TIMEOUT=3
 # CONFIG_BONDING is not set
 # CONFIG_BOOKE_WDT is not set
 CONFIG_BOOKE_WDT_DEFAULT_TIMEOUT=3

+# CONFIG_BOOTPARAM_HARDLOCKUP_PANIC is not set

 # CONFIG_BOOTPARAM_HUNG_TASK_PANIC is not set
 # CONFIG_BOOTPARAM_SOFTLOCKUP_PANIC is not set
 # CONFIG_BOOTTIME_TRACING is not set
 # CONFIG_BOOTPARAM_HUNG_TASK_PANIC is not set
 # CONFIG_BOOTPARAM_SOFTLOCKUP_PANIC is not set
 # CONFIG_BOOTTIME_TRACING is not set