CONFIG_CSKY_PMU_V1 is not available for thedefaultarchitecture x86.
Result is shown for architecture csky

Performance Monitoring Unit Ver.1

modulename: perf_event.ko

configname: CONFIG_CSKY_PMU_V1

C-SKY PMU type
└─>Performance Monitoring Unit Ver.1
In linux kernel since version 5 (release Date: 2019-03-03)  
source code:
arch/csky/kernel/perf_event.c