[openwrt/openwrt] kernel: Add CONFIG_KERNEL_HARDLOCKUP_DETECTOR

[LEDE Commits]

hauke pushed a commit to openwrt/openwrt.git, branch master:
https://git.openwrt.org/b844716158dc8060d53785cbf4ecb022ebb255a2

commit b844716158dc8060d53785cbf4ecb022ebb255a2
Author: Hauke Mehrtens <hmehrtens at maxlinear.com>
AuthorDate: Wed Mar 8 21:31:20 2023 +0100

    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 at maxlinear.com>
---
 config/Config-kernel.in          | 12 ++++++++++++
 target/linux/generic/config-5.15 |  1 +
 2 files changed, 13 insertions(+)

diff --git a/config/Config-kernel.in b/config/Config-kernel.in
index ad23b21479..c7b1864235 100644
--- 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
diff --git a/target/linux/generic/config-5.15 b/target/linux/generic/config-5.15
index eab0423878..3374c239e2 100644
--- 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_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