CONFIG_HARDLOCKUP_DETECTOR_PERF (not configurable)

modulename: watchdog_hld.ko

and/or

watchdog_perf.ko

configname: CONFIG_HARDLOCKUP_DETECTOR_PERF

Linux Kernel Configuration
└─>Kernel hacking
└─>Debug Oops, Lockups and Hangs
└─>HARDLOCKUP_DETECTOR_PERF
In linux kernel since version 3.10 (release Date: 2013-06-30)  
source code:
arch/arm64/kernel/watchdog_hld.c