default or selected kernelversion does not have config value CONFIG_DEBUG_PI_LIST.
Result is shown for kernelversion 6.9.9

Debug priority linked list manipulation

configname: CONFIG_DEBUG_PI_LIST

Linux Kernel Configuration
└─>Kernel hacking
└─>Debug priority linked list manipulation
In linux kernel since version 2.6.18 (release Date: 2006-09-19)  
Enable this to turn on extended checks in the priority-ordered
linked-list (plist) walking routines. This checks the entire
list multiple times during each manipulation.

If unsure, say N.