softlockup: allow panic on lockup
authorIngo Molnar <mingo@elte.hu>
Mon, 12 May 2008 19:21:04 +0000 (21:21 +0200)
committerThomas Gleixner <tglx@linutronix.de>
Sun, 25 May 2008 04:34:44 +0000 (06:34 +0200)
commit9c44bc03fff44ff04237a7d92e35304a0e50c331
tree64704ff78933a3a3bd8549801308d0557c02980d
parent75d3bce2fc0a80f435fe12f2c9ed2632c8ac29e4
softlockup: allow panic on lockup

allow users to configure the softlockup detector to generate a panic
instead of a warning message.

high-availability systems might opt for this strict method (combined
with panic_timeout= boot option/sysctl), instead of generating
softlockup warnings ad infinitum.

also, automated tests work better if the system reboots reliably (into
a safe kernel) in case of a lockup.

The full spectrum of configurability is supported: boot option, sysctl
option and Kconfig option.

it's default-disabled.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Documentation/kernel-parameters.txt
include/linux/sched.h
kernel/softlockup.c
kernel/sysctl.c
lib/Kconfig.debug