26 static bool _is_cpu_device(struct device *dev)  in _is_cpu_device()  argument
28 	return (dev->bus == &cpu_subsys);  in _is_cpu_device()
67 static void em_debug_create_pd(struct device *dev)  in em_debug_create_pd()  argument
73 	d = debugfs_create_dir(dev_name(dev), rootdir);  in em_debug_create_pd()
75 	if (_is_cpu_device(dev))  in em_debug_create_pd()
76 		debugfs_create_file("cpus", 0444, d, dev->em_pd->cpus,  in em_debug_create_pd()
79 	debugfs_create_file("flags", 0444, d, dev->em_pd,  in em_debug_create_pd()
83 	for (i = 0; i < dev->em_pd->nr_perf_states; i++)  in em_debug_create_pd()
84 		em_debug_create_ps(&dev->em_pd->table[i], d);  in em_debug_create_pd()
88 static void em_debug_remove_pd(struct device *dev)  in em_debug_remove_pd()  argument
90 	debugfs_lookup_and_remove(dev_name(dev), rootdir);  in em_debug_remove_pd()
102 static void em_debug_create_pd(struct device *dev) {}  in em_debug_create_pd()  argument
103 static void em_debug_remove_pd(struct device *dev) {}  in em_debug_remove_pd()  argument
106 static int em_create_perf_table(struct device *dev, struct em_perf_domain *pd,  in em_create_perf_table()  argument
126 		ret = cb->active_power(dev, &power, &freq);  in em_create_perf_table()
128 			dev_err(dev, "EM: invalid perf. state: %d\n",  in em_create_perf_table()
138 			dev_err(dev, "EM: non-increasing freq: %lu\n",  in em_create_perf_table()
148 			dev_err(dev, "EM: invalid power: %lu\n",  in em_create_perf_table()
163 			ret = cb->get_cost(dev, table[i].frequency, &cost);  in em_create_perf_table()
165 				dev_err(dev, "EM: invalid cost %lu %d\n",  in em_create_perf_table()
178 			dev_dbg(dev, "EM: OPP:%lu is inefficient\n",  in em_create_perf_table()
195 static int em_create_pd(struct device *dev, int nr_states,  in em_create_pd()  argument
203 	if (_is_cpu_device(dev)) {  in em_create_pd()
208 			dev_err(dev, "EM: too many CPUs, overflow possible\n");  in em_create_pd()
223 	ret = em_create_perf_table(dev, pd, nr_states, cb, flags);  in em_create_pd()
229 	if (_is_cpu_device(dev))  in em_create_pd()
235 	dev->em_pd = pd;  in em_create_pd()
240 static void em_cpufreq_update_efficiencies(struct device *dev)  in em_cpufreq_update_efficiencies()  argument
242 	struct em_perf_domain *pd = dev->em_pd;  in em_cpufreq_update_efficiencies()
248 	if (!_is_cpu_device(dev) || !pd)  in em_cpufreq_update_efficiencies()
253 		dev_warn(dev, "EM: Access to CPUFreq policy failed");  in em_cpufreq_update_efficiencies()
286 struct em_perf_domain *em_pd_get(struct device *dev)  in em_pd_get()  argument
288 	if (IS_ERR_OR_NULL(dev))  in em_pd_get()
291 	return dev->em_pd;  in em_pd_get()
337 int em_dev_register_perf_domain(struct device *dev, unsigned int nr_states,  in em_dev_register_perf_domain()  argument
345 	if (!dev || !nr_states || !cb)  in em_dev_register_perf_domain()
354 	if (dev->em_pd) {  in em_dev_register_perf_domain()
359 	if (_is_cpu_device(dev)) {  in em_dev_register_perf_domain()
361 			dev_err(dev, "EM: invalid CPU mask\n");  in em_dev_register_perf_domain()
368 				dev_err(dev, "EM: exists for CPU%d\n", cpu);  in em_dev_register_perf_domain()
379 				dev_err(dev, "EM: CPUs of %*pbl must have the same capacity\n",  in em_dev_register_perf_domain()
394 	ret = em_create_pd(dev, nr_states, cb, cpus, flags);  in em_dev_register_perf_domain()
398 	dev->em_pd->flags |= flags;  in em_dev_register_perf_domain()
400 	em_cpufreq_update_efficiencies(dev);  in em_dev_register_perf_domain()
402 	em_debug_create_pd(dev);  in em_dev_register_perf_domain()
403 	dev_info(dev, "EM: created perf domain\n");  in em_dev_register_perf_domain()
417 void em_dev_unregister_perf_domain(struct device *dev)  in em_dev_unregister_perf_domain()  argument
419 	if (IS_ERR_OR_NULL(dev) || !dev->em_pd)  in em_dev_unregister_perf_domain()
422 	if (_is_cpu_device(dev))  in em_dev_unregister_perf_domain()
431 	em_debug_remove_pd(dev);  in em_dev_unregister_perf_domain()
433 	kfree(dev->em_pd->table);  in em_dev_unregister_perf_domain()
434 	kfree(dev->em_pd);  in em_dev_unregister_perf_domain()
435 	dev->em_pd = NULL;  in em_dev_unregister_perf_domain()