default or selected kernelversion does not have config value CONFIG_TEST_BITFIELD.
Result is shown for kernelversion 6.9.9
Test bitfield functions at runtime
modulename: test_bitfield.ko
configname: CONFIG_TEST_BITFIELD
Linux Kernel Configuration
└─>Kernel hacking
└─>Runtime Testing
└─>Test bitfield functions at runtime
In linux kernel since version 4.2 (release Date: 2015-08-30)
Enable this option to test the bitfield functions at boot.
If unsure, say N.
If unsure, say N.