br_return_retired  566 arch/arm/kernel/perf_event_v7.c ARMV7_EVENT_ATTR(br_return_retired, ARMV7_PERFCTR_PC_PROC_RETURN);
br_return_retired  179 arch/arm64/kernel/perf_event.c ARMV8_EVENT_ATTR(br_return_retired, ARMV8_PMUV3_PERFCTR_BR_RETURN_RETIRED);