Lines Matching refs:policy
79 static unsigned int __cpufreq_get(struct cpufreq_policy *policy);
80 static int cpufreq_init_governor(struct cpufreq_policy *policy);
81 static void cpufreq_exit_governor(struct cpufreq_policy *policy);
82 static void cpufreq_governor_limits(struct cpufreq_policy *policy);
83 static int cpufreq_set_policy(struct cpufreq_policy *policy,
116 struct kobject *get_governor_parent_kobj(struct cpufreq_policy *policy) in get_governor_parent_kobj() argument
119 return &policy->kobj; in get_governor_parent_kobj()
170 void cpufreq_generic_init(struct cpufreq_policy *policy, in cpufreq_generic_init() argument
174 policy->freq_table = table; in cpufreq_generic_init()
175 policy->cpuinfo.transition_latency = transition_latency; in cpufreq_generic_init()
181 cpumask_setall(policy->cpus); in cpufreq_generic_init()
187 struct cpufreq_policy *policy = per_cpu(cpufreq_cpu_data, cpu); in cpufreq_cpu_get_raw() local
189 return policy && cpumask_test_cpu(cpu, policy->cpus) ? policy : NULL; in cpufreq_cpu_get_raw()
195 struct cpufreq_policy *policy = cpufreq_cpu_get_raw(cpu); in cpufreq_generic_get() local
197 if (!policy || IS_ERR(policy->clk)) { in cpufreq_generic_get()
199 __func__, policy ? "clk" : "policy", cpu); in cpufreq_generic_get()
203 return clk_get_rate(policy->clk) / 1000; in cpufreq_generic_get()
220 struct cpufreq_policy *policy = NULL; in cpufreq_cpu_get() local
231 policy = cpufreq_cpu_get_raw(cpu); in cpufreq_cpu_get()
232 if (policy) in cpufreq_cpu_get()
233 kobject_get(&policy->kobj); in cpufreq_cpu_get()
238 return policy; in cpufreq_cpu_get()
246 void cpufreq_cpu_put(struct cpufreq_policy *policy) in cpufreq_cpu_put() argument
248 kobject_put(&policy->kobj); in cpufreq_cpu_put()
256 void cpufreq_cpu_release(struct cpufreq_policy *policy) in cpufreq_cpu_release() argument
258 if (WARN_ON(!policy)) in cpufreq_cpu_release()
261 lockdep_assert_held(&policy->rwsem); in cpufreq_cpu_release()
263 up_write(&policy->rwsem); in cpufreq_cpu_release()
265 cpufreq_cpu_put(policy); in cpufreq_cpu_release()
282 struct cpufreq_policy *policy = cpufreq_cpu_get(cpu); in cpufreq_cpu_acquire() local
284 if (!policy) in cpufreq_cpu_acquire()
287 down_write(&policy->rwsem); in cpufreq_cpu_acquire()
289 if (policy_is_inactive(policy)) { in cpufreq_cpu_acquire()
290 cpufreq_cpu_release(policy); in cpufreq_cpu_acquire()
294 return policy; in cpufreq_cpu_acquire()
343 static void cpufreq_notify_transition(struct cpufreq_policy *policy, in cpufreq_notify_transition() argument
354 freqs->policy = policy; in cpufreq_notify_transition()
366 if (policy->cur && policy->cur != freqs->old) { in cpufreq_notify_transition()
368 freqs->old, policy->cur); in cpufreq_notify_transition()
369 freqs->old = policy->cur; in cpufreq_notify_transition()
381 cpumask_pr_args(policy->cpus)); in cpufreq_notify_transition()
383 for_each_cpu(cpu, policy->cpus) in cpufreq_notify_transition()
389 cpufreq_stats_record_transition(policy, freqs->new); in cpufreq_notify_transition()
390 policy->cur = freqs->new; in cpufreq_notify_transition()
395 static void cpufreq_notify_post_transition(struct cpufreq_policy *policy, in cpufreq_notify_post_transition() argument
398 cpufreq_notify_transition(policy, freqs, CPUFREQ_POSTCHANGE); in cpufreq_notify_post_transition()
403 cpufreq_notify_transition(policy, freqs, CPUFREQ_PRECHANGE); in cpufreq_notify_post_transition()
404 cpufreq_notify_transition(policy, freqs, CPUFREQ_POSTCHANGE); in cpufreq_notify_post_transition()
407 void cpufreq_freq_transition_begin(struct cpufreq_policy *policy, in cpufreq_freq_transition_begin() argument
420 && current == policy->transition_task); in cpufreq_freq_transition_begin()
423 wait_event(policy->transition_wait, !policy->transition_ongoing); in cpufreq_freq_transition_begin()
425 spin_lock(&policy->transition_lock); in cpufreq_freq_transition_begin()
427 if (unlikely(policy->transition_ongoing)) { in cpufreq_freq_transition_begin()
428 spin_unlock(&policy->transition_lock); in cpufreq_freq_transition_begin()
432 policy->transition_ongoing = true; in cpufreq_freq_transition_begin()
433 policy->transition_task = current; in cpufreq_freq_transition_begin()
435 spin_unlock(&policy->transition_lock); in cpufreq_freq_transition_begin()
437 cpufreq_notify_transition(policy, freqs, CPUFREQ_PRECHANGE); in cpufreq_freq_transition_begin()
441 void cpufreq_freq_transition_end(struct cpufreq_policy *policy, in cpufreq_freq_transition_end() argument
444 if (WARN_ON(!policy->transition_ongoing)) in cpufreq_freq_transition_end()
447 cpufreq_notify_post_transition(policy, freqs, transition_failed); in cpufreq_freq_transition_end()
449 arch_set_freq_scale(policy->related_cpus, in cpufreq_freq_transition_end()
450 policy->cur, in cpufreq_freq_transition_end()
451 policy->cpuinfo.max_freq); in cpufreq_freq_transition_end()
453 policy->transition_ongoing = false; in cpufreq_freq_transition_end()
454 policy->transition_task = NULL; in cpufreq_freq_transition_end()
456 wake_up(&policy->transition_wait); in cpufreq_freq_transition_end()
492 void cpufreq_enable_fast_switch(struct cpufreq_policy *policy) in cpufreq_enable_fast_switch() argument
494 lockdep_assert_held(&policy->rwsem); in cpufreq_enable_fast_switch()
496 if (!policy->fast_switch_possible) in cpufreq_enable_fast_switch()
502 policy->fast_switch_enabled = true; in cpufreq_enable_fast_switch()
505 policy->cpu); in cpufreq_enable_fast_switch()
516 void cpufreq_disable_fast_switch(struct cpufreq_policy *policy) in cpufreq_disable_fast_switch() argument
519 if (policy->fast_switch_enabled) { in cpufreq_disable_fast_switch()
520 policy->fast_switch_enabled = false; in cpufreq_disable_fast_switch()
539 unsigned int cpufreq_driver_resolve_freq(struct cpufreq_policy *policy, in cpufreq_driver_resolve_freq() argument
542 target_freq = clamp_val(target_freq, policy->min, policy->max); in cpufreq_driver_resolve_freq()
543 policy->cached_target_freq = target_freq; in cpufreq_driver_resolve_freq()
548 idx = cpufreq_frequency_table_target(policy, target_freq, in cpufreq_driver_resolve_freq()
550 policy->cached_resolved_idx = idx; in cpufreq_driver_resolve_freq()
551 return policy->freq_table[idx].frequency; in cpufreq_driver_resolve_freq()
555 return cpufreq_driver->resolve_freq(policy, target_freq); in cpufreq_driver_resolve_freq()
561 unsigned int cpufreq_policy_transition_delay_us(struct cpufreq_policy *policy) in cpufreq_policy_transition_delay_us() argument
565 if (policy->transition_delay_us) in cpufreq_policy_transition_delay_us()
566 return policy->transition_delay_us; in cpufreq_policy_transition_delay_us()
568 latency = policy->cpuinfo.transition_latency / NSEC_PER_USEC; in cpufreq_policy_transition_delay_us()
686 (struct cpufreq_policy *policy, char *buf) \
688 return sprintf(buf, "%u\n", policy->object); \
702 static ssize_t show_scaling_cur_freq(struct cpufreq_policy *policy, char *buf) in show_scaling_cur_freq() argument
707 freq = arch_freq_get_on_cpu(policy->cpu); in show_scaling_cur_freq()
711 ret = sprintf(buf, "%u\n", cpufreq_driver->get(policy->cpu)); in show_scaling_cur_freq()
713 ret = sprintf(buf, "%u\n", policy->cur); in show_scaling_cur_freq()
722 (struct cpufreq_policy *policy, const char *buf, size_t count) \
731 ret = freq_qos_update_request(policy->object##_freq_req, val);\
741 static ssize_t show_cpuinfo_cur_freq(struct cpufreq_policy *policy, in show_cpuinfo_cur_freq() argument
744 unsigned int cur_freq = __cpufreq_get(policy); in show_cpuinfo_cur_freq()
755 static ssize_t show_scaling_governor(struct cpufreq_policy *policy, char *buf) in show_scaling_governor() argument
757 if (policy->policy == CPUFREQ_POLICY_POWERSAVE) in show_scaling_governor()
759 else if (policy->policy == CPUFREQ_POLICY_PERFORMANCE) in show_scaling_governor()
761 else if (policy->governor) in show_scaling_governor()
763 policy->governor->name); in show_scaling_governor()
770 static ssize_t store_scaling_governor(struct cpufreq_policy *policy, in store_scaling_governor() argument
787 ret = cpufreq_set_policy(policy, NULL, new_pol); in store_scaling_governor()
795 ret = cpufreq_set_policy(policy, new_gov, in store_scaling_governor()
807 static ssize_t show_scaling_driver(struct cpufreq_policy *policy, char *buf) in show_scaling_driver() argument
815 static ssize_t show_scaling_available_governors(struct cpufreq_policy *policy, in show_scaling_available_governors() argument
860 static ssize_t show_related_cpus(struct cpufreq_policy *policy, char *buf) in show_related_cpus() argument
862 return cpufreq_show_cpus(policy->related_cpus, buf); in show_related_cpus()
868 static ssize_t show_affected_cpus(struct cpufreq_policy *policy, char *buf) in show_affected_cpus() argument
870 return cpufreq_show_cpus(policy->cpus, buf); in show_affected_cpus()
873 static ssize_t store_scaling_setspeed(struct cpufreq_policy *policy, in store_scaling_setspeed() argument
879 if (!policy->governor || !policy->governor->store_setspeed) in store_scaling_setspeed()
886 policy->governor->store_setspeed(policy, freq); in store_scaling_setspeed()
891 static ssize_t show_scaling_setspeed(struct cpufreq_policy *policy, char *buf) in show_scaling_setspeed() argument
893 if (!policy->governor || !policy->governor->show_setspeed) in show_scaling_setspeed()
896 return policy->governor->show_setspeed(policy, buf); in show_scaling_setspeed()
902 static ssize_t show_bios_limit(struct cpufreq_policy *policy, char *buf) in show_bios_limit() argument
906 ret = cpufreq_driver->bios_limit(policy->cpu, &limit); in show_bios_limit()
909 return sprintf(buf, "%u\n", policy->cpuinfo.max_freq); in show_bios_limit()
947 struct cpufreq_policy *policy = to_policy(kobj); in show() local
954 down_read(&policy->rwsem); in show()
955 ret = fattr->show(policy, buf); in show()
956 up_read(&policy->rwsem); in show()
964 struct cpufreq_policy *policy = to_policy(kobj); in store() local
978 if (cpu_online(policy->cpu)) { in store()
979 down_write(&policy->rwsem); in store()
980 ret = fattr->store(policy, buf, count); in store()
981 up_write(&policy->rwsem); in store()
991 struct cpufreq_policy *policy = to_policy(kobj); in cpufreq_sysfs_release() local
993 complete(&policy->kobj_unregister); in cpufreq_sysfs_release()
1007 static void add_cpu_dev_symlink(struct cpufreq_policy *policy, unsigned int cpu) in add_cpu_dev_symlink() argument
1014 if (cpumask_test_and_set_cpu(cpu, policy->real_cpus)) in add_cpu_dev_symlink()
1018 if (sysfs_create_link(&dev->kobj, &policy->kobj, "cpufreq")) in add_cpu_dev_symlink()
1022 static void remove_cpu_dev_symlink(struct cpufreq_policy *policy, in remove_cpu_dev_symlink() argument
1029 static int cpufreq_add_dev_interface(struct cpufreq_policy *policy) in cpufreq_add_dev_interface() argument
1037 ret = sysfs_create_file(&policy->kobj, &((*drv_attr)->attr)); in cpufreq_add_dev_interface()
1043 ret = sysfs_create_file(&policy->kobj, &cpuinfo_cur_freq.attr); in cpufreq_add_dev_interface()
1048 ret = sysfs_create_file(&policy->kobj, &scaling_cur_freq.attr); in cpufreq_add_dev_interface()
1053 ret = sysfs_create_file(&policy->kobj, &bios_limit.attr); in cpufreq_add_dev_interface()
1061 static int cpufreq_init_policy(struct cpufreq_policy *policy) in cpufreq_init_policy() argument
1069 gov = get_governor(policy->last_governor); in cpufreq_init_policy()
1072 gov->name, policy->cpu); in cpufreq_init_policy()
1085 if (policy->last_policy) { in cpufreq_init_policy()
1086 pol = policy->last_policy; in cpufreq_init_policy()
1095 pol = policy->policy; in cpufreq_init_policy()
1102 ret = cpufreq_set_policy(policy, gov, pol); in cpufreq_init_policy()
1109 static int cpufreq_add_policy_cpu(struct cpufreq_policy *policy, unsigned int cpu) in cpufreq_add_policy_cpu() argument
1114 if (cpumask_test_cpu(cpu, policy->cpus)) in cpufreq_add_policy_cpu()
1117 down_write(&policy->rwsem); in cpufreq_add_policy_cpu()
1119 cpufreq_stop_governor(policy); in cpufreq_add_policy_cpu()
1121 cpumask_set_cpu(cpu, policy->cpus); in cpufreq_add_policy_cpu()
1124 ret = cpufreq_start_governor(policy); in cpufreq_add_policy_cpu()
1128 up_write(&policy->rwsem); in cpufreq_add_policy_cpu()
1132 void refresh_frequency_limits(struct cpufreq_policy *policy) in refresh_frequency_limits() argument
1134 if (!policy_is_inactive(policy)) { in refresh_frequency_limits()
1135 pr_debug("updating policy for CPU %u\n", policy->cpu); in refresh_frequency_limits()
1137 cpufreq_set_policy(policy, policy->governor, policy->policy); in refresh_frequency_limits()
1144 struct cpufreq_policy *policy = in handle_update() local
1147 pr_debug("handle_update for cpu %u called\n", policy->cpu); in handle_update()
1148 down_write(&policy->rwsem); in handle_update()
1149 refresh_frequency_limits(policy); in handle_update()
1150 up_write(&policy->rwsem); in handle_update()
1156 struct cpufreq_policy *policy = container_of(nb, struct cpufreq_policy, nb_min); in cpufreq_notifier_min() local
1158 schedule_work(&policy->update); in cpufreq_notifier_min()
1165 struct cpufreq_policy *policy = container_of(nb, struct cpufreq_policy, nb_max); in cpufreq_notifier_max() local
1167 schedule_work(&policy->update); in cpufreq_notifier_max()
1171 static void cpufreq_policy_put_kobj(struct cpufreq_policy *policy) in cpufreq_policy_put_kobj() argument
1176 down_write(&policy->rwsem); in cpufreq_policy_put_kobj()
1177 cpufreq_stats_free_table(policy); in cpufreq_policy_put_kobj()
1178 kobj = &policy->kobj; in cpufreq_policy_put_kobj()
1179 cmp = &policy->kobj_unregister; in cpufreq_policy_put_kobj()
1180 up_write(&policy->rwsem); in cpufreq_policy_put_kobj()
1195 struct cpufreq_policy *policy; in cpufreq_policy_alloc() local
1202 policy = kzalloc(sizeof(*policy), GFP_KERNEL); in cpufreq_policy_alloc()
1203 if (!policy) in cpufreq_policy_alloc()
1206 if (!alloc_cpumask_var(&policy->cpus, GFP_KERNEL)) in cpufreq_policy_alloc()
1209 if (!zalloc_cpumask_var(&policy->related_cpus, GFP_KERNEL)) in cpufreq_policy_alloc()
1212 if (!zalloc_cpumask_var(&policy->real_cpus, GFP_KERNEL)) in cpufreq_policy_alloc()
1215 ret = kobject_init_and_add(&policy->kobj, &ktype_cpufreq, in cpufreq_policy_alloc()
1224 kobject_put(&policy->kobj); in cpufreq_policy_alloc()
1228 freq_constraints_init(&policy->constraints); in cpufreq_policy_alloc()
1230 policy->nb_min.notifier_call = cpufreq_notifier_min; in cpufreq_policy_alloc()
1231 policy->nb_max.notifier_call = cpufreq_notifier_max; in cpufreq_policy_alloc()
1233 ret = freq_qos_add_notifier(&policy->constraints, FREQ_QOS_MIN, in cpufreq_policy_alloc()
1234 &policy->nb_min); in cpufreq_policy_alloc()
1237 ret, cpumask_pr_args(policy->cpus)); in cpufreq_policy_alloc()
1241 ret = freq_qos_add_notifier(&policy->constraints, FREQ_QOS_MAX, in cpufreq_policy_alloc()
1242 &policy->nb_max); in cpufreq_policy_alloc()
1245 ret, cpumask_pr_args(policy->cpus)); in cpufreq_policy_alloc()
1249 INIT_LIST_HEAD(&policy->policy_list); in cpufreq_policy_alloc()
1250 init_rwsem(&policy->rwsem); in cpufreq_policy_alloc()
1251 spin_lock_init(&policy->transition_lock); in cpufreq_policy_alloc()
1252 init_waitqueue_head(&policy->transition_wait); in cpufreq_policy_alloc()
1253 init_completion(&policy->kobj_unregister); in cpufreq_policy_alloc()
1254 INIT_WORK(&policy->update, handle_update); in cpufreq_policy_alloc()
1256 policy->cpu = cpu; in cpufreq_policy_alloc()
1257 return policy; in cpufreq_policy_alloc()
1260 freq_qos_remove_notifier(&policy->constraints, FREQ_QOS_MIN, in cpufreq_policy_alloc()
1261 &policy->nb_min); in cpufreq_policy_alloc()
1263 cpufreq_policy_put_kobj(policy); in cpufreq_policy_alloc()
1265 free_cpumask_var(policy->real_cpus); in cpufreq_policy_alloc()
1267 free_cpumask_var(policy->related_cpus); in cpufreq_policy_alloc()
1269 free_cpumask_var(policy->cpus); in cpufreq_policy_alloc()
1271 kfree(policy); in cpufreq_policy_alloc()
1276 static void cpufreq_policy_free(struct cpufreq_policy *policy) in cpufreq_policy_free() argument
1283 list_del(&policy->policy_list); in cpufreq_policy_free()
1285 for_each_cpu(cpu, policy->related_cpus) in cpufreq_policy_free()
1289 freq_qos_remove_notifier(&policy->constraints, FREQ_QOS_MAX, in cpufreq_policy_free()
1290 &policy->nb_max); in cpufreq_policy_free()
1291 freq_qos_remove_notifier(&policy->constraints, FREQ_QOS_MIN, in cpufreq_policy_free()
1292 &policy->nb_min); in cpufreq_policy_free()
1295 cancel_work_sync(&policy->update); in cpufreq_policy_free()
1297 if (policy->max_freq_req) { in cpufreq_policy_free()
1303 CPUFREQ_REMOVE_POLICY, policy); in cpufreq_policy_free()
1304 freq_qos_remove_request(policy->max_freq_req); in cpufreq_policy_free()
1307 freq_qos_remove_request(policy->min_freq_req); in cpufreq_policy_free()
1308 kfree(policy->min_freq_req); in cpufreq_policy_free()
1310 cpufreq_policy_put_kobj(policy); in cpufreq_policy_free()
1311 free_cpumask_var(policy->real_cpus); in cpufreq_policy_free()
1312 free_cpumask_var(policy->related_cpus); in cpufreq_policy_free()
1313 free_cpumask_var(policy->cpus); in cpufreq_policy_free()
1314 kfree(policy); in cpufreq_policy_free()
1319 struct cpufreq_policy *policy; in cpufreq_online() local
1328 policy = per_cpu(cpufreq_cpu_data, cpu); in cpufreq_online()
1329 if (policy) { in cpufreq_online()
1330 WARN_ON(!cpumask_test_cpu(cpu, policy->related_cpus)); in cpufreq_online()
1331 if (!policy_is_inactive(policy)) in cpufreq_online()
1332 return cpufreq_add_policy_cpu(policy, cpu); in cpufreq_online()
1336 down_write(&policy->rwsem); in cpufreq_online()
1337 policy->cpu = cpu; in cpufreq_online()
1338 policy->governor = NULL; in cpufreq_online()
1339 up_write(&policy->rwsem); in cpufreq_online()
1342 policy = cpufreq_policy_alloc(cpu); in cpufreq_online()
1343 if (!policy) in cpufreq_online()
1348 ret = cpufreq_driver->online(policy); in cpufreq_online()
1356 cpumask_copy(policy->cpus, policy->related_cpus); in cpufreq_online()
1358 cpumask_copy(policy->cpus, cpumask_of(cpu)); in cpufreq_online()
1364 ret = cpufreq_driver->init(policy); in cpufreq_online()
1371 ret = cpufreq_table_validate_and_sort(policy); in cpufreq_online()
1376 cpumask_copy(policy->related_cpus, policy->cpus); in cpufreq_online()
1379 down_write(&policy->rwsem); in cpufreq_online()
1384 cpumask_and(policy->cpus, policy->cpus, cpu_online_mask); in cpufreq_online()
1387 for_each_cpu(j, policy->related_cpus) { in cpufreq_online()
1388 per_cpu(cpufreq_cpu_data, j) = policy; in cpufreq_online()
1389 add_cpu_dev_symlink(policy, j); in cpufreq_online()
1392 policy->min_freq_req = kzalloc(2 * sizeof(*policy->min_freq_req), in cpufreq_online()
1394 if (!policy->min_freq_req) in cpufreq_online()
1397 ret = freq_qos_add_request(&policy->constraints, in cpufreq_online()
1398 policy->min_freq_req, FREQ_QOS_MIN, in cpufreq_online()
1399 policy->min); in cpufreq_online()
1405 kfree(policy->min_freq_req); in cpufreq_online()
1406 policy->min_freq_req = NULL; in cpufreq_online()
1415 policy->max_freq_req = policy->min_freq_req + 1; in cpufreq_online()
1417 ret = freq_qos_add_request(&policy->constraints, in cpufreq_online()
1418 policy->max_freq_req, FREQ_QOS_MAX, in cpufreq_online()
1419 policy->max); in cpufreq_online()
1421 policy->max_freq_req = NULL; in cpufreq_online()
1426 CPUFREQ_CREATE_POLICY, policy); in cpufreq_online()
1430 policy->cur = cpufreq_driver->get(policy->cpu); in cpufreq_online()
1431 if (!policy->cur) { in cpufreq_online()
1457 unsigned int old_freq = policy->cur; in cpufreq_online()
1460 ret = cpufreq_frequency_table_get_index(policy, old_freq); in cpufreq_online()
1462 ret = __cpufreq_driver_target(policy, old_freq - 1, in cpufreq_online()
1472 __func__, policy->cpu, old_freq, policy->cur); in cpufreq_online()
1477 ret = cpufreq_add_dev_interface(policy); in cpufreq_online()
1481 cpufreq_stats_create_table(policy); in cpufreq_online()
1484 list_add(&policy->policy_list, &cpufreq_policy_list); in cpufreq_online()
1488 ret = cpufreq_init_policy(policy); in cpufreq_online()
1495 up_write(&policy->rwsem); in cpufreq_online()
1497 kobject_uevent(&policy->kobj, KOBJ_ADD); in cpufreq_online()
1501 cpufreq_driver->ready(policy); in cpufreq_online()
1504 policy->cdev = of_cpufreq_cooling_register(policy); in cpufreq_online()
1511 for_each_cpu(j, policy->real_cpus) in cpufreq_online()
1512 remove_cpu_dev_symlink(policy, get_cpu_device(j)); in cpufreq_online()
1514 up_write(&policy->rwsem); in cpufreq_online()
1518 cpufreq_driver->exit(policy); in cpufreq_online()
1521 cpufreq_policy_free(policy); in cpufreq_online()
1532 struct cpufreq_policy *policy; in cpufreq_add_dev() local
1545 policy = per_cpu(cpufreq_cpu_data, cpu); in cpufreq_add_dev()
1546 if (policy) in cpufreq_add_dev()
1547 add_cpu_dev_symlink(policy, cpu); in cpufreq_add_dev()
1554 struct cpufreq_policy *policy; in cpufreq_offline() local
1559 policy = cpufreq_cpu_get_raw(cpu); in cpufreq_offline()
1560 if (!policy) { in cpufreq_offline()
1565 down_write(&policy->rwsem); in cpufreq_offline()
1567 cpufreq_stop_governor(policy); in cpufreq_offline()
1569 cpumask_clear_cpu(cpu, policy->cpus); in cpufreq_offline()
1571 if (policy_is_inactive(policy)) { in cpufreq_offline()
1573 strncpy(policy->last_governor, policy->governor->name, in cpufreq_offline()
1576 policy->last_policy = policy->policy; in cpufreq_offline()
1577 } else if (cpu == policy->cpu) { in cpufreq_offline()
1579 policy->cpu = cpumask_any(policy->cpus); in cpufreq_offline()
1583 if (!policy_is_inactive(policy)) { in cpufreq_offline()
1585 ret = cpufreq_start_governor(policy); in cpufreq_offline()
1594 cpufreq_cooling_unregister(policy->cdev); in cpufreq_offline()
1595 policy->cdev = NULL; in cpufreq_offline()
1599 cpufreq_driver->stop_cpu(policy); in cpufreq_offline()
1602 cpufreq_exit_governor(policy); in cpufreq_offline()
1609 cpufreq_driver->offline(policy); in cpufreq_offline()
1611 cpufreq_driver->exit(policy); in cpufreq_offline()
1612 policy->freq_table = NULL; in cpufreq_offline()
1616 up_write(&policy->rwsem); in cpufreq_offline()
1628 struct cpufreq_policy *policy = per_cpu(cpufreq_cpu_data, cpu); in cpufreq_remove_dev() local
1630 if (!policy) in cpufreq_remove_dev()
1636 cpumask_clear_cpu(cpu, policy->real_cpus); in cpufreq_remove_dev()
1637 remove_cpu_dev_symlink(policy, dev); in cpufreq_remove_dev()
1639 if (cpumask_empty(policy->real_cpus)) { in cpufreq_remove_dev()
1642 cpufreq_driver->exit(policy); in cpufreq_remove_dev()
1644 cpufreq_policy_free(policy); in cpufreq_remove_dev()
1657 static void cpufreq_out_of_sync(struct cpufreq_policy *policy, in cpufreq_out_of_sync() argument
1663 policy->cur, new_freq); in cpufreq_out_of_sync()
1665 freqs.old = policy->cur; in cpufreq_out_of_sync()
1668 cpufreq_freq_transition_begin(policy, &freqs); in cpufreq_out_of_sync()
1669 cpufreq_freq_transition_end(policy, &freqs, 0); in cpufreq_out_of_sync()
1672 static unsigned int cpufreq_verify_current_freq(struct cpufreq_policy *policy, bool update) in cpufreq_verify_current_freq() argument
1676 new_freq = cpufreq_driver->get(policy->cpu); in cpufreq_verify_current_freq()
1684 if (policy->fast_switch_enabled || !has_target()) in cpufreq_verify_current_freq()
1687 if (policy->cur != new_freq) { in cpufreq_verify_current_freq()
1688 cpufreq_out_of_sync(policy, new_freq); in cpufreq_verify_current_freq()
1690 schedule_work(&policy->update); in cpufreq_verify_current_freq()
1705 struct cpufreq_policy *policy; in cpufreq_quick_get() local
1719 policy = cpufreq_cpu_get(cpu); in cpufreq_quick_get()
1720 if (policy) { in cpufreq_quick_get()
1721 ret_freq = policy->cur; in cpufreq_quick_get()
1722 cpufreq_cpu_put(policy); in cpufreq_quick_get()
1737 struct cpufreq_policy *policy = cpufreq_cpu_get(cpu); in cpufreq_quick_get_max() local
1740 if (policy) { in cpufreq_quick_get_max()
1741 ret_freq = policy->max; in cpufreq_quick_get_max()
1742 cpufreq_cpu_put(policy); in cpufreq_quick_get_max()
1757 struct cpufreq_policy *policy = cpufreq_cpu_get(cpu); in cpufreq_get_hw_max_freq() local
1760 if (policy) { in cpufreq_get_hw_max_freq()
1761 ret_freq = policy->cpuinfo.max_freq; in cpufreq_get_hw_max_freq()
1762 cpufreq_cpu_put(policy); in cpufreq_get_hw_max_freq()
1769 static unsigned int __cpufreq_get(struct cpufreq_policy *policy) in __cpufreq_get() argument
1771 if (unlikely(policy_is_inactive(policy))) in __cpufreq_get()
1774 return cpufreq_verify_current_freq(policy, true); in __cpufreq_get()
1785 struct cpufreq_policy *policy = cpufreq_cpu_get(cpu); in cpufreq_get() local
1788 if (policy) { in cpufreq_get()
1789 down_read(&policy->rwsem); in cpufreq_get()
1791 ret_freq = __cpufreq_get(policy); in cpufreq_get()
1792 up_read(&policy->rwsem); in cpufreq_get()
1794 cpufreq_cpu_put(policy); in cpufreq_get()
1812 int cpufreq_generic_suspend(struct cpufreq_policy *policy) in cpufreq_generic_suspend() argument
1816 if (!policy->suspend_freq) { in cpufreq_generic_suspend()
1822 policy->suspend_freq); in cpufreq_generic_suspend()
1824 ret = __cpufreq_driver_target(policy, policy->suspend_freq, in cpufreq_generic_suspend()
1828 __func__, policy->suspend_freq, ret); in cpufreq_generic_suspend()
1844 struct cpufreq_policy *policy; in cpufreq_suspend() local
1854 for_each_active_policy(policy) { in cpufreq_suspend()
1856 down_write(&policy->rwsem); in cpufreq_suspend()
1857 cpufreq_stop_governor(policy); in cpufreq_suspend()
1858 up_write(&policy->rwsem); in cpufreq_suspend()
1861 if (cpufreq_driver->suspend && cpufreq_driver->suspend(policy)) in cpufreq_suspend()
1878 struct cpufreq_policy *policy; in cpufreq_resume() local
1894 for_each_active_policy(policy) { in cpufreq_resume()
1895 if (cpufreq_driver->resume && cpufreq_driver->resume(policy)) { in cpufreq_resume()
1897 policy); in cpufreq_resume()
1899 down_write(&policy->rwsem); in cpufreq_resume()
1900 ret = cpufreq_start_governor(policy); in cpufreq_resume()
1901 up_write(&policy->rwsem); in cpufreq_resume()
1905 __func__, policy); in cpufreq_resume()
2071 unsigned int cpufreq_driver_fast_switch(struct cpufreq_policy *policy, in cpufreq_driver_fast_switch() argument
2077 target_freq = clamp_val(target_freq, policy->min, policy->max); in cpufreq_driver_fast_switch()
2078 freq = cpufreq_driver->fast_switch(policy, target_freq); in cpufreq_driver_fast_switch()
2083 policy->cur = freq; in cpufreq_driver_fast_switch()
2084 arch_set_freq_scale(policy->related_cpus, freq, in cpufreq_driver_fast_switch()
2085 policy->cpuinfo.max_freq); in cpufreq_driver_fast_switch()
2086 cpufreq_stats_record_transition(policy, freq); in cpufreq_driver_fast_switch()
2089 for_each_cpu(cpu, policy->cpus) in cpufreq_driver_fast_switch()
2098 static int __target_intermediate(struct cpufreq_policy *policy, in __target_intermediate() argument
2103 freqs->new = cpufreq_driver->get_intermediate(policy, index); in __target_intermediate()
2110 __func__, policy->cpu, freqs->old, freqs->new); in __target_intermediate()
2112 cpufreq_freq_transition_begin(policy, freqs); in __target_intermediate()
2113 ret = cpufreq_driver->target_intermediate(policy, index); in __target_intermediate()
2114 cpufreq_freq_transition_end(policy, freqs, ret); in __target_intermediate()
2123 static int __target_index(struct cpufreq_policy *policy, int index) in __target_index() argument
2125 struct cpufreq_freqs freqs = {.old = policy->cur, .flags = 0}; in __target_index()
2127 unsigned int newfreq = policy->freq_table[index].frequency; in __target_index()
2131 if (newfreq == policy->cur) in __target_index()
2138 retval = __target_intermediate(policy, &freqs, index); in __target_index()
2150 __func__, policy->cpu, freqs.old, freqs.new); in __target_index()
2152 cpufreq_freq_transition_begin(policy, &freqs); in __target_index()
2155 retval = cpufreq_driver->target_index(policy, index); in __target_index()
2161 cpufreq_freq_transition_end(policy, &freqs, retval); in __target_index()
2171 freqs.new = policy->restore_freq; in __target_index()
2172 cpufreq_freq_transition_begin(policy, &freqs); in __target_index()
2173 cpufreq_freq_transition_end(policy, &freqs, 0); in __target_index()
2180 int __cpufreq_driver_target(struct cpufreq_policy *policy, in __cpufreq_driver_target() argument
2191 target_freq = clamp_val(target_freq, policy->min, policy->max); in __cpufreq_driver_target()
2194 policy->cpu, target_freq, relation, old_target_freq); in __cpufreq_driver_target()
2202 if (target_freq == policy->cur && in __cpufreq_driver_target()
2207 policy->restore_freq = policy->cur; in __cpufreq_driver_target()
2210 return cpufreq_driver->target(policy, target_freq, relation); in __cpufreq_driver_target()
2215 index = cpufreq_frequency_table_target(policy, target_freq, relation); in __cpufreq_driver_target()
2217 return __target_index(policy, index); in __cpufreq_driver_target()
2221 int cpufreq_driver_target(struct cpufreq_policy *policy, in cpufreq_driver_target() argument
2227 down_write(&policy->rwsem); in cpufreq_driver_target()
2229 ret = __cpufreq_driver_target(policy, target_freq, relation); in cpufreq_driver_target()
2231 up_write(&policy->rwsem); in cpufreq_driver_target()
2242 static int cpufreq_init_governor(struct cpufreq_policy *policy) in cpufreq_init_governor() argument
2253 if (!policy->governor) in cpufreq_init_governor()
2257 if (policy->governor->flags & CPUFREQ_GOV_DYNAMIC_SWITCHING && in cpufreq_init_governor()
2263 policy->governor->name, gov->name); in cpufreq_init_governor()
2264 policy->governor = gov; in cpufreq_init_governor()
2270 if (!try_module_get(policy->governor->owner)) in cpufreq_init_governor()
2273 pr_debug("%s: for CPU %u\n", __func__, policy->cpu); in cpufreq_init_governor()
2275 if (policy->governor->init) { in cpufreq_init_governor()
2276 ret = policy->governor->init(policy); in cpufreq_init_governor()
2278 module_put(policy->governor->owner); in cpufreq_init_governor()
2283 policy->strict_target = !!(policy->governor->flags & CPUFREQ_GOV_STRICT_TARGET); in cpufreq_init_governor()
2288 static void cpufreq_exit_governor(struct cpufreq_policy *policy) in cpufreq_exit_governor() argument
2290 if (cpufreq_suspended || !policy->governor) in cpufreq_exit_governor()
2293 pr_debug("%s: for CPU %u\n", __func__, policy->cpu); in cpufreq_exit_governor()
2295 if (policy->governor->exit) in cpufreq_exit_governor()
2296 policy->governor->exit(policy); in cpufreq_exit_governor()
2298 module_put(policy->governor->owner); in cpufreq_exit_governor()
2301 int cpufreq_start_governor(struct cpufreq_policy *policy) in cpufreq_start_governor() argument
2308 if (!policy->governor) in cpufreq_start_governor()
2311 pr_debug("%s: for CPU %u\n", __func__, policy->cpu); in cpufreq_start_governor()
2314 cpufreq_verify_current_freq(policy, false); in cpufreq_start_governor()
2316 if (policy->governor->start) { in cpufreq_start_governor()
2317 ret = policy->governor->start(policy); in cpufreq_start_governor()
2322 if (policy->governor->limits) in cpufreq_start_governor()
2323 policy->governor->limits(policy); in cpufreq_start_governor()
2328 void cpufreq_stop_governor(struct cpufreq_policy *policy) in cpufreq_stop_governor() argument
2330 if (cpufreq_suspended || !policy->governor) in cpufreq_stop_governor()
2333 pr_debug("%s: for CPU %u\n", __func__, policy->cpu); in cpufreq_stop_governor()
2335 if (policy->governor->stop) in cpufreq_stop_governor()
2336 policy->governor->stop(policy); in cpufreq_stop_governor()
2339 static void cpufreq_governor_limits(struct cpufreq_policy *policy) in cpufreq_governor_limits() argument
2341 if (cpufreq_suspended || !policy->governor) in cpufreq_governor_limits()
2344 pr_debug("%s: for CPU %u\n", __func__, policy->cpu); in cpufreq_governor_limits()
2346 if (policy->governor->limits) in cpufreq_governor_limits()
2347 policy->governor->limits(policy); in cpufreq_governor_limits()
2375 struct cpufreq_policy *policy; in cpufreq_unregister_governor() local
2386 for_each_inactive_policy(policy) { in cpufreq_unregister_governor()
2387 if (!strcmp(policy->last_governor, governor->name)) { in cpufreq_unregister_governor()
2388 policy->governor = NULL; in cpufreq_unregister_governor()
2389 strcpy(policy->last_governor, "\0"); in cpufreq_unregister_governor()
2413 int cpufreq_get_policy(struct cpufreq_policy *policy, unsigned int cpu) in cpufreq_get_policy() argument
2416 if (!policy) in cpufreq_get_policy()
2423 memcpy(policy, cpu_policy, sizeof(*policy)); in cpufreq_get_policy()
2445 static int cpufreq_set_policy(struct cpufreq_policy *policy, in cpufreq_set_policy() argument
2453 memcpy(&new_data.cpuinfo, &policy->cpuinfo, sizeof(policy->cpuinfo)); in cpufreq_set_policy()
2454 new_data.freq_table = policy->freq_table; in cpufreq_set_policy()
2455 new_data.cpu = policy->cpu; in cpufreq_set_policy()
2460 new_data.min = freq_qos_read_value(&policy->constraints, FREQ_QOS_MIN); in cpufreq_set_policy()
2461 new_data.max = freq_qos_read_value(&policy->constraints, FREQ_QOS_MAX); in cpufreq_set_policy()
2474 policy->min = new_data.min; in cpufreq_set_policy()
2475 policy->max = new_data.max; in cpufreq_set_policy()
2476 trace_cpu_frequency_limits(policy); in cpufreq_set_policy()
2478 policy->cached_target_freq = UINT_MAX; in cpufreq_set_policy()
2481 policy->min, policy->max); in cpufreq_set_policy()
2484 policy->policy = new_pol; in cpufreq_set_policy()
2486 return cpufreq_driver->setpolicy(policy); in cpufreq_set_policy()
2489 if (new_gov == policy->governor) { in cpufreq_set_policy()
2491 cpufreq_governor_limits(policy); in cpufreq_set_policy()
2498 old_gov = policy->governor; in cpufreq_set_policy()
2501 cpufreq_stop_governor(policy); in cpufreq_set_policy()
2502 cpufreq_exit_governor(policy); in cpufreq_set_policy()
2506 policy->governor = new_gov; in cpufreq_set_policy()
2507 ret = cpufreq_init_governor(policy); in cpufreq_set_policy()
2509 ret = cpufreq_start_governor(policy); in cpufreq_set_policy()
2512 sched_cpufreq_governor_change(policy, old_gov); in cpufreq_set_policy()
2515 cpufreq_exit_governor(policy); in cpufreq_set_policy()
2519 pr_debug("starting governor %s failed\n", policy->governor->name); in cpufreq_set_policy()
2521 policy->governor = old_gov; in cpufreq_set_policy()
2522 if (cpufreq_init_governor(policy)) in cpufreq_set_policy()
2523 policy->governor = NULL; in cpufreq_set_policy()
2525 cpufreq_start_governor(policy); in cpufreq_set_policy()
2542 struct cpufreq_policy *policy = cpufreq_cpu_acquire(cpu); in cpufreq_update_policy() local
2544 if (!policy) in cpufreq_update_policy()
2552 (cpufreq_suspended || WARN_ON(!cpufreq_verify_current_freq(policy, false)))) in cpufreq_update_policy()
2555 refresh_frequency_limits(policy); in cpufreq_update_policy()
2558 cpufreq_cpu_release(policy); in cpufreq_update_policy()
2581 static int cpufreq_boost_set_sw(struct cpufreq_policy *policy, int state) in cpufreq_boost_set_sw() argument
2585 if (!policy->freq_table) in cpufreq_boost_set_sw()
2588 ret = cpufreq_frequency_table_cpuinfo(policy, policy->freq_table); in cpufreq_boost_set_sw()
2594 ret = freq_qos_update_request(policy->max_freq_req, policy->max); in cpufreq_boost_set_sw()
2603 struct cpufreq_policy *policy; in cpufreq_boost_trigger_state() local
2615 for_each_active_policy(policy) { in cpufreq_boost_trigger_state()
2616 ret = cpufreq_driver->set_boost(policy, state); in cpufreq_boost_trigger_state()