ld_retired 558 arch/arm/kernel/perf_event_v7.c ARMV7_EVENT_ATTR(ld_retired, ARMV7_PERFCTR_MEM_READ); ld_retired 171 arch/arm64/kernel/perf_event.c ARMV8_EVENT_ATTR(ld_retired, ARMV8_PMUV3_PERFCTR_LD_RETIRED);