542 	union idxd_perfcap perfcap;  in perfmon_pmu_init()  local
580 	perfcap.bits = ioread64(PERFCAP_REG(idxd));  in perfmon_pmu_init()
587 	if (perfcap.num_perf_counter == 0)  in perfmon_pmu_init()
591 	if (perfcap.counter_width == 0)  in perfmon_pmu_init()
595 	if (!perfcap.overflow_interrupt || !perfcap.counter_freeze)  in perfmon_pmu_init()
599 	if (perfcap.num_event_category == 0)  in perfmon_pmu_init()
605 	if (perfcap.cap_per_counter)  in perfmon_pmu_init()
608 	idxd_pmu->n_event_categories = perfcap.num_event_category;  in perfmon_pmu_init()
609 	idxd_pmu->supported_event_categories = perfcap.global_event_category;  in perfmon_pmu_init()
610 	idxd_pmu->per_counter_caps_supported = perfcap.cap_per_counter;  in perfmon_pmu_init()
613 	idxd_pmu->supported_filters = perfcap.filter;  in perfmon_pmu_init()
614 	if (perfcap.filter)  in perfmon_pmu_init()
615 		idxd_pmu->n_filters = hweight8(perfcap.filter);  in perfmon_pmu_init()
618 	idxd_pmu->n_counters = perfcap.num_perf_counter;  in perfmon_pmu_init()
619 	idxd_pmu->counter_width = perfcap.counter_width;  in perfmon_pmu_init()