390 static void maybe_change_configuration(struct cpu_hw_events *cpuc)  in maybe_change_configuration()  argument
394 	if (cpuc->n_added == 0)  in maybe_change_configuration()
398 	for (j = 0; j < cpuc->n_events; j++) {  in maybe_change_configuration()
399 		struct perf_event *pe = cpuc->event[j];  in maybe_change_configuration()
401 		if (cpuc->current_idx[j] != PMC_NO_INDEX &&  in maybe_change_configuration()
402 			cpuc->current_idx[j] != pe->hw.idx) {  in maybe_change_configuration()
403 			alpha_perf_event_update(pe, &pe->hw, cpuc->current_idx[j], 0);  in maybe_change_configuration()
404 			cpuc->current_idx[j] = PMC_NO_INDEX;  in maybe_change_configuration()
409 	cpuc->idx_mask = 0;  in maybe_change_configuration()
410 	for (j = 0; j < cpuc->n_events; j++) {  in maybe_change_configuration()
411 		struct perf_event *pe = cpuc->event[j];  in maybe_change_configuration()
415 		if (cpuc->current_idx[j] == PMC_NO_INDEX) {  in maybe_change_configuration()
417 			cpuc->current_idx[j] = idx;  in maybe_change_configuration()
421 			cpuc->idx_mask |= (1<<cpuc->current_idx[j]);  in maybe_change_configuration()
423 	cpuc->config = cpuc->event[0]->hw.config_base;  in maybe_change_configuration()
434 	struct cpu_hw_events *cpuc = this_cpu_ptr(&cpu_hw_events);  in alpha_pmu_add()  local
455 	n0 = cpuc->n_events;  in alpha_pmu_add()
457 		cpuc->event[n0] = event;  in alpha_pmu_add()
458 		cpuc->evtype[n0] = event->hw.event_base;  in alpha_pmu_add()
459 		cpuc->current_idx[n0] = PMC_NO_INDEX;  in alpha_pmu_add()
461 		if (!alpha_check_constraints(cpuc->event, cpuc->evtype, n0+1)) {  in alpha_pmu_add()
462 			cpuc->n_events++;  in alpha_pmu_add()
463 			cpuc->n_added++;  in alpha_pmu_add()
486 	struct cpu_hw_events *cpuc = this_cpu_ptr(&cpu_hw_events);  in alpha_pmu_del()  local
494 	for (j = 0; j < cpuc->n_events; j++) {  in alpha_pmu_del()
495 		if (event == cpuc->event[j]) {  in alpha_pmu_del()
496 			int idx = cpuc->current_idx[j];  in alpha_pmu_del()
501 			while (++j < cpuc->n_events) {  in alpha_pmu_del()
502 				cpuc->event[j - 1] = cpuc->event[j];  in alpha_pmu_del()
503 				cpuc->evtype[j - 1] = cpuc->evtype[j];  in alpha_pmu_del()
504 				cpuc->current_idx[j - 1] =  in alpha_pmu_del()
505 					cpuc->current_idx[j];  in alpha_pmu_del()
512 			cpuc->idx_mask &= ~(1UL<<idx);  in alpha_pmu_del()
513 			cpuc->n_events--;  in alpha_pmu_del()
534 	struct cpu_hw_events *cpuc = this_cpu_ptr(&cpu_hw_events);  in alpha_pmu_stop()  local
537 		cpuc->idx_mask &= ~(1UL<<hwc->idx);  in alpha_pmu_stop()
546 	if (cpuc->enabled)  in alpha_pmu_stop()
554 	struct cpu_hw_events *cpuc = this_cpu_ptr(&cpu_hw_events);  in alpha_pmu_start()  local
566 	cpuc->idx_mask |= 1UL<<hwc->idx;  in alpha_pmu_start()
567 	if (cpuc->enabled)  in alpha_pmu_start()
727 	struct cpu_hw_events *cpuc = this_cpu_ptr(&cpu_hw_events);  in alpha_pmu_enable()  local
729 	if (cpuc->enabled)  in alpha_pmu_enable()
732 	cpuc->enabled = 1;  in alpha_pmu_enable()
735 	if (cpuc->n_events > 0) {  in alpha_pmu_enable()
737 		maybe_change_configuration(cpuc);  in alpha_pmu_enable()
741 		wrperfmon(PERFMON_CMD_DESIRED_EVENTS, cpuc->config);  in alpha_pmu_enable()
742 		wrperfmon(PERFMON_CMD_ENABLE, cpuc->idx_mask);  in alpha_pmu_enable()
753 	struct cpu_hw_events *cpuc = this_cpu_ptr(&cpu_hw_events);  in alpha_pmu_disable()  local
755 	if (!cpuc->enabled)  in alpha_pmu_disable()
758 	cpuc->enabled = 0;  in alpha_pmu_disable()
759 	cpuc->n_added = 0;  in alpha_pmu_disable()
761 	wrperfmon(PERFMON_CMD_DISABLE, cpuc->idx_mask);  in alpha_pmu_disable()
811 	struct cpu_hw_events *cpuc;  in alpha_perf_event_irq_handler()  local
818 	cpuc = this_cpu_ptr(&cpu_hw_events);  in alpha_perf_event_irq_handler()
825 	wrperfmon(PERFMON_CMD_DISABLE, cpuc->idx_mask);  in alpha_perf_event_irq_handler()
832 		wrperfmon(PERFMON_CMD_ENABLE, cpuc->idx_mask);  in alpha_perf_event_irq_handler()
838 	for (j = 0; j < cpuc->n_events; j++) {  in alpha_perf_event_irq_handler()
839 		if (cpuc->current_idx[j] == idx)  in alpha_perf_event_irq_handler()
843 	if (unlikely(j == cpuc->n_events)) {  in alpha_perf_event_irq_handler()
845 		wrperfmon(PERFMON_CMD_ENABLE, cpuc->idx_mask);  in alpha_perf_event_irq_handler()
849 	event = cpuc->event[j];  in alpha_perf_event_irq_handler()
855 		wrperfmon(PERFMON_CMD_ENABLE, cpuc->idx_mask);  in alpha_perf_event_irq_handler()
871 	wrperfmon(PERFMON_CMD_ENABLE, cpuc->idx_mask);  in alpha_perf_event_irq_handler()