CONFIG_STARFIVE_STARLINK_PMU is not available for thedefaultarchitecture x86.
Result is shown for architecture 64BIT

StarFive StarLink PMU

modulename: starfive_starlink_pmu.ko

configname: CONFIG_STARFIVE_STARLINK_PMU

Linux Kernel Configuration
└─>Device Drivers
└─>Performance monitor support
└─>StarFive StarLink PMU
In linux kernel since version 6.1.89 (release Date: 2024-04-29)  
Provide support for StarLink Performance Monitor Unit.
StarLink Performance Monitor Unit integrates one or more cores with
an L3 memory system. The L3 cache events are added into perf event
subsystem, allowing monitoring of various L3 cache perf events.

source code:
depends
CONFIG_64BIT
CONFIG_PERF_EVENTS
CONFIG_ARCH_STARFIVE or CONFIG_COMPILE_TEST