CONFIG_HAVE_HARDLOCKUP_DETECTOR_SPARC64 is not available for thedefaultarchitecture x86.
Result is shown for architecture sparc

CONFIG_HAVE_HARDLOCKUP_DETECTOR_SPARC64 (not configurable)

configname: CONFIG_HAVE_HARDLOCKUP_DETECTOR_SPARC64

Linux Kernel Configuration
└─>HAVE_HARDLOCKUP_DETECTOR_SPARC64
In linux kernel since version 6.5 (release Date: 2023-08-27)  
Sparc64 hardlockup detector is the last one developed before adding
the common infrastructure for handling hardlockup detectors. It is
always built. It does _not_ use the common command line parameters
and sysctl interface, except for /proc/sys/kernel/nmi_watchdog.