PERF_COUNT_HW_REF_CPU_CYCLES 58 include/uapi/linux/perf_event.h PERF_COUNT_HW_REF_CPU_CYCLES = 9, PERF_COUNT_HW_REF_CPU_CYCLES 58 tools/include/uapi/linux/perf_event.h PERF_COUNT_HW_REF_CPU_CYCLES = 9,