CONFIG_DEBUG_RWLOCK is not available for thedefaultarchitecture x86.
Result is shown for architecture parisc
default or selected kernelversion does not have config value CONFIG_DEBUG_RWLOCK.
Result is shown for kernelversion 5.4.123

Read-write spinlock debugging


Linux Kernel Configuration
└─>Kernel hacking
└─>Read-write spinlock debugging
In linux kernel since version 2.6.12  
If you say Y here then read-write lock processing will count how many
times it has tried to get the lock and issue an error message after
too many attempts. If you suspect a rwlock problem or a kernel
hacker asks for this option then say Y. Otherwise say N.