bus_cycles        610 arch/arm/kernel/perf_event_v7.c ARMV7_EVENT_ATTR(bus_cycles, ARMV7_PERFCTR_BUS_CYCLES);
bus_cycles        194 arch/arm64/kernel/perf_event.c ARMV8_EVENT_ATTR(bus_cycles, ARMV8_PMUV3_PERFCTR_BUS_CYCLES);
bus_cycles        189 drivers/perf/arm_dsu_pmu.c 	DSU_EVENT_ATTR(bus_cycles, 0x1d),