Merge branch 'linus' into core/softlockup

[pandora-kernel.git] / lib / Kconfig.debug

diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index 9638d99..c6e854f 100644 (file)
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -186,6 +186,44 @@ config BOOTPARAM_SOFTLOCKUP_PANIC_VALUE
        default 0 if !BOOTPARAM_SOFTLOCKUP_PANIC
        default 1 if BOOTPARAM_SOFTLOCKUP_PANIC
 
+config DETECT_HUNG_TASK
+       bool "Detect Hung Tasks"
+       depends on DEBUG_KERNEL
+       default DETECT_SOFTLOCKUP
+       help
+         Say Y here to enable the kernel to detect "hung tasks",
+         which are bugs that cause the task to be stuck in
+         uninterruptible "D" state indefinitiley.
+
+         When a hung task is detected, the kernel will print the
+         current stack trace (which you should report), but the
+         task will stay in uninterruptible state. If lockdep is
+         enabled then all held locks will also be reported. This
+         feature has negligible overhead.
+
+config BOOTPARAM_HUNG_TASK_PANIC
+       bool "Panic (Reboot) On Hung Tasks"
+       depends on DETECT_HUNG_TASK
+       help
+         Say Y here to enable the kernel to panic on "hung tasks",
+         which are bugs that cause the kernel to leave a task stuck
+         in uninterruptible "D" state.
+
+         The panic can be used in combination with panic_timeout,
+         to cause the system to reboot automatically after a
+         hung task has been detected. This feature is useful for
+         high-availability systems that have uptime guarantees and
+         where a hung tasks must be resolved ASAP.
+
+         Say N if unsure.
+
+config BOOTPARAM_HUNG_TASK_PANIC_VALUE
+       int
+       depends on DETECT_HUNG_TASK
+       range 0 1
+       default 0 if !BOOTPARAM_HUNG_TASK_PANIC
+       default 1 if BOOTPARAM_HUNG_TASK_PANIC
+
 config SCHED_DEBUG
        bool "Collect scheduler debugging info"
        depends on DEBUG_KERNEL && PROC_FS