workqueue: implement lockup detector

[linux-drm-fsl-dcu.git] / lib / Kconfig.debug

diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index 8c15b29d5adc64214880cf7c066fb83349f612aa..3048bf5b729ab09133b1680a32763aa37215ff91 100644 (file)
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -812,6 +812,17 @@ config BOOTPARAM_HUNG_TASK_PANIC_VALUE
        default 0 if !BOOTPARAM_HUNG_TASK_PANIC
        default 1 if BOOTPARAM_HUNG_TASK_PANIC
 
+config WQ_WATCHDOG
+       bool "Detect Workqueue Stalls"
+       depends on DEBUG_KERNEL
+       help
+         Say Y here to enable stall detection on workqueues.  If a
+         worker pool doesn't make forward progress on a pending work
+         item for over a given amount of time, 30s by default, a
+         warning message is printed along with dump of workqueue
+         state.  This can be configured through kernel parameter
+         "workqueue.watchdog_thresh" and its sysfs counterpart.
+
 endmenu # "Debug lockups and hangs"
 
 config PANIC_ON_OOPS