reproduce (this is a W=1 build):
        git clone https://github.com/intel/lkp-tests.git ~/lkp-tests
        # https://github.com/atishp04/linux/commit/ff95fdf2b45981994b06f059cabb981c3b22d4ed
        git remote add atishp04 https://github.com/atishp04/linux
        git fetch --no-tags atishp04 b4/pmu_event_info
        git checkout ff95fdf2b45981994b06f059cabb981c3b22d4ed
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=riscv olddefconfig
        ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=riscv SHELL=/bin/bash drivers/perf/