PERF_COUNT_HW_STALLED_CYCLES_FRONTEND 56 include/uapi/linux/perf_event.h PERF_COUNT_HW_STALLED_CYCLES_FRONTEND = 7, PERF_COUNT_HW_STALLED_CYCLES_FRONTEND 56 tools/include/uapi/linux/perf_event.h PERF_COUNT_HW_STALLED_CYCLES_FRONTEND = 7,