160 	int n = dev->coupled->online_count;  in cpuidle_coupled_parallel_barrier()
215 static inline void cpuidle_coupled_set_ready(struct cpuidle_coupled *coupled)  in cpuidle_coupled_set_ready()  argument
217 	atomic_add(MAX_WAITING_CPUS, &coupled->ready_waiting_counts);  in cpuidle_coupled_set_ready()
235 inline int cpuidle_coupled_set_not_ready(struct cpuidle_coupled *coupled)  in cpuidle_coupled_set_not_ready()  argument
240 	all = coupled->online_count | (coupled->online_count << WAITING_BITS);  in cpuidle_coupled_set_not_ready()
241 	ret = atomic_add_unless(&coupled->ready_waiting_counts,  in cpuidle_coupled_set_not_ready()
253 static inline int cpuidle_coupled_no_cpus_ready(struct cpuidle_coupled *coupled)  in cpuidle_coupled_no_cpus_ready()  argument
255 	int r = atomic_read(&coupled->ready_waiting_counts) >> WAITING_BITS;  in cpuidle_coupled_no_cpus_ready()
265 static inline bool cpuidle_coupled_cpus_ready(struct cpuidle_coupled *coupled)  in cpuidle_coupled_cpus_ready()  argument
267 	int r = atomic_read(&coupled->ready_waiting_counts) >> WAITING_BITS;  in cpuidle_coupled_cpus_ready()
268 	return r == coupled->online_count;  in cpuidle_coupled_cpus_ready()
277 static inline bool cpuidle_coupled_cpus_waiting(struct cpuidle_coupled *coupled)  in cpuidle_coupled_cpus_waiting()  argument
279 	int w = atomic_read(&coupled->ready_waiting_counts) & WAITING_MASK;  in cpuidle_coupled_cpus_waiting()
280 	return w == coupled->online_count;  in cpuidle_coupled_cpus_waiting()
289 static inline int cpuidle_coupled_no_cpus_waiting(struct cpuidle_coupled *coupled)  in cpuidle_coupled_no_cpus_waiting()  argument
291 	int w = atomic_read(&coupled->ready_waiting_counts) & WAITING_MASK;  in cpuidle_coupled_no_cpus_waiting()
303 		struct cpuidle_coupled *coupled)  in cpuidle_coupled_get_state()  argument
315 	for_each_cpu(i, &coupled->coupled_cpus)  in cpuidle_coupled_get_state()
316 		if (cpu_online(i) && coupled->requested_state[i] < state)  in cpuidle_coupled_get_state()
317 			state = coupled->requested_state[i];  in cpuidle_coupled_get_state()
357 		struct cpuidle_coupled *coupled)  in cpuidle_coupled_poke_others()  argument
361 	for_each_cpu(cpu, &coupled->coupled_cpus)  in cpuidle_coupled_poke_others()
376 		struct cpuidle_coupled *coupled, int next_state)  in cpuidle_coupled_set_waiting()  argument
378 	coupled->requested_state[cpu] = next_state;  in cpuidle_coupled_set_waiting()
384 	return atomic_inc_return(&coupled->ready_waiting_counts) & WAITING_MASK;  in cpuidle_coupled_set_waiting()
395 		struct cpuidle_coupled *coupled)  in cpuidle_coupled_set_not_waiting()  argument
403 	atomic_dec(&coupled->ready_waiting_counts);  in cpuidle_coupled_set_not_waiting()
405 	coupled->requested_state[cpu] = CPUIDLE_COUPLED_NOT_IDLE;  in cpuidle_coupled_set_not_waiting()
417 static void cpuidle_coupled_set_done(int cpu, struct cpuidle_coupled *coupled)  in cpuidle_coupled_set_done()  argument
419 	cpuidle_coupled_set_not_waiting(cpu, coupled);  in cpuidle_coupled_set_done()
420 	atomic_sub(MAX_WAITING_CPUS, &coupled->ready_waiting_counts);  in cpuidle_coupled_set_done()
449 static bool cpuidle_coupled_any_pokes_pending(struct cpuidle_coupled *coupled)  in cpuidle_coupled_any_pokes_pending()  argument
454 	cpumask_and(&cpus, cpu_online_mask, &coupled->coupled_cpus);  in cpuidle_coupled_any_pokes_pending()
483 	struct cpuidle_coupled *coupled = dev->coupled;  in cpuidle_enter_state_coupled()  local
486 	if (!coupled)  in cpuidle_enter_state_coupled()
489 	while (coupled->prevent) {  in cpuidle_enter_state_coupled()
506 	w = cpuidle_coupled_set_waiting(dev->cpu, coupled, next_state);  in cpuidle_enter_state_coupled()
514 	if (w == coupled->online_count) {  in cpuidle_enter_state_coupled()
516 		cpuidle_coupled_poke_others(dev->cpu, coupled);  in cpuidle_enter_state_coupled()
528 	while (!cpuidle_coupled_cpus_waiting(coupled) ||  in cpuidle_enter_state_coupled()
534 			cpuidle_coupled_set_not_waiting(dev->cpu, coupled);  in cpuidle_enter_state_coupled()
538 		if (coupled->prevent) {  in cpuidle_enter_state_coupled()
539 			cpuidle_coupled_set_not_waiting(dev->cpu, coupled);  in cpuidle_enter_state_coupled()
550 		cpuidle_coupled_set_not_waiting(dev->cpu, coupled);  in cpuidle_enter_state_coupled()
569 	cpuidle_coupled_set_ready(coupled);  in cpuidle_enter_state_coupled()
570 	while (!cpuidle_coupled_cpus_ready(coupled)) {  in cpuidle_enter_state_coupled()
572 		if (!cpuidle_coupled_cpus_waiting(coupled))  in cpuidle_enter_state_coupled()
573 			if (!cpuidle_coupled_set_not_ready(coupled))  in cpuidle_enter_state_coupled()
594 	if (cpuidle_coupled_any_pokes_pending(coupled)) {  in cpuidle_enter_state_coupled()
595 		cpuidle_coupled_set_done(dev->cpu, coupled);  in cpuidle_enter_state_coupled()
597 		cpuidle_coupled_parallel_barrier(dev, &coupled->abort_barrier);  in cpuidle_enter_state_coupled()
602 	next_state = cpuidle_coupled_get_state(dev, coupled);  in cpuidle_enter_state_coupled()
606 	cpuidle_coupled_set_done(dev->cpu, coupled);  in cpuidle_enter_state_coupled()
630 	while (!cpuidle_coupled_no_cpus_ready(coupled))  in cpuidle_enter_state_coupled()
636 static void cpuidle_coupled_update_online_cpus(struct cpuidle_coupled *coupled)  in cpuidle_coupled_update_online_cpus()  argument
639 	cpumask_and(&cpus, cpu_online_mask, &coupled->coupled_cpus);  in cpuidle_coupled_update_online_cpus()
640 	coupled->online_count = cpumask_weight(&cpus);  in cpuidle_coupled_update_online_cpus()
656 	struct cpuidle_coupled *coupled;  in cpuidle_coupled_register_device()  local
663 		if (other_dev && other_dev->coupled) {  in cpuidle_coupled_register_device()
664 			coupled = other_dev->coupled;  in cpuidle_coupled_register_device()
670 	coupled = kzalloc(sizeof(struct cpuidle_coupled), GFP_KERNEL);  in cpuidle_coupled_register_device()
671 	if (!coupled)  in cpuidle_coupled_register_device()
674 	coupled->coupled_cpus = dev->coupled_cpus;  in cpuidle_coupled_register_device()
677 	dev->coupled = coupled;  in cpuidle_coupled_register_device()
678 	if (WARN_ON(!cpumask_equal(&dev->coupled_cpus, &coupled->coupled_cpus)))  in cpuidle_coupled_register_device()
679 		coupled->prevent++;  in cpuidle_coupled_register_device()
681 	cpuidle_coupled_update_online_cpus(coupled);  in cpuidle_coupled_register_device()
683 	coupled->refcnt++;  in cpuidle_coupled_register_device()
702 	struct cpuidle_coupled *coupled = dev->coupled;  in cpuidle_coupled_unregister_device()  local
707 	if (--coupled->refcnt)  in cpuidle_coupled_unregister_device()
708 		kfree(coupled);  in cpuidle_coupled_unregister_device()
709 	dev->coupled = NULL;  in cpuidle_coupled_unregister_device()
719 static void cpuidle_coupled_prevent_idle(struct cpuidle_coupled *coupled)  in cpuidle_coupled_prevent_idle()  argument
724 	coupled->prevent++;  in cpuidle_coupled_prevent_idle()
725 	cpuidle_coupled_poke_others(cpu, coupled);  in cpuidle_coupled_prevent_idle()
727 	while (!cpuidle_coupled_no_cpus_waiting(coupled))  in cpuidle_coupled_prevent_idle()
738 static void cpuidle_coupled_allow_idle(struct cpuidle_coupled *coupled)  in cpuidle_coupled_allow_idle()  argument
747 	coupled->prevent--;  in cpuidle_coupled_allow_idle()
749 	cpuidle_coupled_poke_others(cpu, coupled);  in cpuidle_coupled_allow_idle()
783 	if (!dev || !dev->coupled)  in cpuidle_coupled_cpu_notify()
789 		cpuidle_coupled_prevent_idle(dev->coupled);  in cpuidle_coupled_cpu_notify()
793 		cpuidle_coupled_update_online_cpus(dev->coupled);  in cpuidle_coupled_cpu_notify()
797 		cpuidle_coupled_allow_idle(dev->coupled);  in cpuidle_coupled_cpu_notify()