HP Proliant iLO 2 Hardware Watchdog Timer

modulename: hpwdt.ko

configname: CONFIG_HP_WATCHDOG

Linux Kernel Configuration
└─>Device Drivers
└─>Watchdog Timer Support
└─>HP Proliant iLO 2 Hardware Watchdog Timer
In linux kernel since version 2.6.25 (release Date: 2008-04-16)  
A software monitoring watchdog and NMI sourcing driver. This driver
will detect lockups and provide stack trace. Also, when an NMI
occurs this driver will make the necessary BIOS calls to log
the cause of the NMI. This is a driver that will only load on a
HP ProLiant system with a minimum of iLO2 support.
To compile this driver as a module, choose M here: the
module will be called hpwdt.

source code: