CONFIG_DMAR_PERF (not configurable)

modulename: perf.ko

configname: CONFIG_DMAR_PERF

Linux Kernel Configuration
└─>Device Drivers
└─>IOMMU Hardware Support
└─>DMAR_PERF
In linux kernel since version 5.2 (release Date: 2019-07-07)  
source code:
drivers/iommu/intel//perf.c