Lines Matching refs:policy
36 static inline bool policy_is_inactive(struct cpufreq_policy *policy) in policy_is_inactive() argument
38 return cpumask_empty(policy->cpus); in policy_is_inactive()
77 static unsigned int __cpufreq_get(struct cpufreq_policy *policy);
78 static int cpufreq_init_governor(struct cpufreq_policy *policy);
79 static void cpufreq_exit_governor(struct cpufreq_policy *policy);
80 static int cpufreq_start_governor(struct cpufreq_policy *policy);
81 static void cpufreq_stop_governor(struct cpufreq_policy *policy);
82 static void cpufreq_governor_limits(struct cpufreq_policy *policy);
111 struct kobject *get_governor_parent_kobj(struct cpufreq_policy *policy) in get_governor_parent_kobj() argument
114 return &policy->kobj; in get_governor_parent_kobj()
168 int cpufreq_generic_init(struct cpufreq_policy *policy, in cpufreq_generic_init() argument
172 policy->freq_table = table; in cpufreq_generic_init()
173 policy->cpuinfo.transition_latency = transition_latency; in cpufreq_generic_init()
179 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()
222 struct cpufreq_policy *policy = NULL; in cpufreq_cpu_get() local
233 policy = cpufreq_cpu_get_raw(cpu); in cpufreq_cpu_get()
234 if (policy) in cpufreq_cpu_get()
235 kobject_get(&policy->kobj); in cpufreq_cpu_get()
240 return policy; in cpufreq_cpu_get()
252 void cpufreq_cpu_put(struct cpufreq_policy *policy) in cpufreq_cpu_put() argument
254 kobject_put(&policy->kobj); in cpufreq_cpu_put()
304 static void cpufreq_notify_transition(struct cpufreq_policy *policy, in cpufreq_notify_transition() argument
325 if (policy->cur && (policy->cur != freqs->old)) { in cpufreq_notify_transition()
327 freqs->old, policy->cur); in cpufreq_notify_transition()
328 freqs->old = policy->cur; in cpufreq_notify_transition()
332 for_each_cpu(freqs->cpu, policy->cpus) { in cpufreq_notify_transition()
343 cpumask_pr_args(policy->cpus)); in cpufreq_notify_transition()
345 for_each_cpu(freqs->cpu, policy->cpus) { in cpufreq_notify_transition()
351 cpufreq_stats_record_transition(policy, freqs->new); in cpufreq_notify_transition()
352 policy->cur = freqs->new; in cpufreq_notify_transition()
357 static void cpufreq_notify_post_transition(struct cpufreq_policy *policy, in cpufreq_notify_post_transition() argument
360 cpufreq_notify_transition(policy, freqs, CPUFREQ_POSTCHANGE); in cpufreq_notify_post_transition()
365 cpufreq_notify_transition(policy, freqs, CPUFREQ_PRECHANGE); in cpufreq_notify_post_transition()
366 cpufreq_notify_transition(policy, freqs, CPUFREQ_POSTCHANGE); in cpufreq_notify_post_transition()
369 void cpufreq_freq_transition_begin(struct cpufreq_policy *policy, in cpufreq_freq_transition_begin() argument
382 && current == policy->transition_task); in cpufreq_freq_transition_begin()
385 wait_event(policy->transition_wait, !policy->transition_ongoing); in cpufreq_freq_transition_begin()
387 spin_lock(&policy->transition_lock); in cpufreq_freq_transition_begin()
389 if (unlikely(policy->transition_ongoing)) { in cpufreq_freq_transition_begin()
390 spin_unlock(&policy->transition_lock); in cpufreq_freq_transition_begin()
394 policy->transition_ongoing = true; in cpufreq_freq_transition_begin()
395 policy->transition_task = current; in cpufreq_freq_transition_begin()
397 spin_unlock(&policy->transition_lock); in cpufreq_freq_transition_begin()
399 cpufreq_notify_transition(policy, freqs, CPUFREQ_PRECHANGE); in cpufreq_freq_transition_begin()
403 void cpufreq_freq_transition_end(struct cpufreq_policy *policy, in cpufreq_freq_transition_end() argument
406 if (unlikely(WARN_ON(!policy->transition_ongoing))) in cpufreq_freq_transition_end()
409 cpufreq_notify_post_transition(policy, freqs, transition_failed); in cpufreq_freq_transition_end()
411 policy->transition_ongoing = false; in cpufreq_freq_transition_end()
412 policy->transition_task = NULL; in cpufreq_freq_transition_end()
414 wake_up(&policy->transition_wait); in cpufreq_freq_transition_end()
450 void cpufreq_enable_fast_switch(struct cpufreq_policy *policy) in cpufreq_enable_fast_switch() argument
452 lockdep_assert_held(&policy->rwsem); in cpufreq_enable_fast_switch()
454 if (!policy->fast_switch_possible) in cpufreq_enable_fast_switch()
460 policy->fast_switch_enabled = true; in cpufreq_enable_fast_switch()
463 policy->cpu); in cpufreq_enable_fast_switch()
474 void cpufreq_disable_fast_switch(struct cpufreq_policy *policy) in cpufreq_disable_fast_switch() argument
477 if (policy->fast_switch_enabled) { in cpufreq_disable_fast_switch()
478 policy->fast_switch_enabled = false; in cpufreq_disable_fast_switch()
496 unsigned int cpufreq_driver_resolve_freq(struct cpufreq_policy *policy, in cpufreq_driver_resolve_freq() argument
499 target_freq = clamp_val(target_freq, policy->min, policy->max); in cpufreq_driver_resolve_freq()
500 policy->cached_target_freq = target_freq; in cpufreq_driver_resolve_freq()
505 idx = cpufreq_frequency_table_target(policy, target_freq, in cpufreq_driver_resolve_freq()
507 policy->cached_resolved_idx = idx; in cpufreq_driver_resolve_freq()
508 return policy->freq_table[idx].frequency; in cpufreq_driver_resolve_freq()
512 return cpufreq_driver->resolve_freq(policy, target_freq); in cpufreq_driver_resolve_freq()
518 unsigned int cpufreq_policy_transition_delay_us(struct cpufreq_policy *policy) in cpufreq_policy_transition_delay_us() argument
522 if (policy->transition_delay_us) in cpufreq_policy_transition_delay_us()
523 return policy->transition_delay_us; in cpufreq_policy_transition_delay_us()
525 latency = policy->cpuinfo.transition_latency / NSEC_PER_USEC; in cpufreq_policy_transition_delay_us()
590 struct cpufreq_policy *policy) in cpufreq_parse_governor() argument
594 policy->policy = CPUFREQ_POLICY_PERFORMANCE; in cpufreq_parse_governor()
599 policy->policy = CPUFREQ_POLICY_POWERSAVE; in cpufreq_parse_governor()
627 policy->governor = t; in cpufreq_parse_governor()
645 (struct cpufreq_policy *policy, char *buf) \
647 return sprintf(buf, "%u\n", policy->object); \
661 static ssize_t show_scaling_cur_freq(struct cpufreq_policy *policy, char *buf) in show_scaling_cur_freq() argument
666 freq = arch_freq_get_on_cpu(policy->cpu); in show_scaling_cur_freq()
671 ret = sprintf(buf, "%u\n", cpufreq_driver->get(policy->cpu)); in show_scaling_cur_freq()
673 ret = sprintf(buf, "%u\n", policy->cur); in show_scaling_cur_freq()
677 static int cpufreq_set_policy(struct cpufreq_policy *policy,
685 (struct cpufreq_policy *policy, const char *buf, size_t count) \
690 memcpy(&new_policy, policy, sizeof(*policy)); \
691 new_policy.min = policy->user_policy.min; \
692 new_policy.max = policy->user_policy.max; \
699 ret = cpufreq_set_policy(policy, &new_policy); \
701 policy->user_policy.object = temp; \
712 static ssize_t show_cpuinfo_cur_freq(struct cpufreq_policy *policy, in show_cpuinfo_cur_freq() argument
715 unsigned int cur_freq = __cpufreq_get(policy); in show_cpuinfo_cur_freq()
726 static ssize_t show_scaling_governor(struct cpufreq_policy *policy, char *buf) in show_scaling_governor() argument
728 if (policy->policy == CPUFREQ_POLICY_POWERSAVE) in show_scaling_governor()
730 else if (policy->policy == CPUFREQ_POLICY_PERFORMANCE) in show_scaling_governor()
732 else if (policy->governor) in show_scaling_governor()
734 policy->governor->name); in show_scaling_governor()
741 static ssize_t store_scaling_governor(struct cpufreq_policy *policy, in store_scaling_governor() argument
748 memcpy(&new_policy, policy, sizeof(*policy)); in store_scaling_governor()
757 ret = cpufreq_set_policy(policy, &new_policy); in store_scaling_governor()
768 static ssize_t show_scaling_driver(struct cpufreq_policy *policy, char *buf) in show_scaling_driver() argument
776 static ssize_t show_scaling_available_governors(struct cpufreq_policy *policy, in show_scaling_available_governors() argument
819 static ssize_t show_related_cpus(struct cpufreq_policy *policy, char *buf) in show_related_cpus() argument
821 return cpufreq_show_cpus(policy->related_cpus, buf); in show_related_cpus()
827 static ssize_t show_affected_cpus(struct cpufreq_policy *policy, char *buf) in show_affected_cpus() argument
829 return cpufreq_show_cpus(policy->cpus, buf); in show_affected_cpus()
832 static ssize_t store_scaling_setspeed(struct cpufreq_policy *policy, in store_scaling_setspeed() argument
838 if (!policy->governor || !policy->governor->store_setspeed) in store_scaling_setspeed()
845 policy->governor->store_setspeed(policy, freq); in store_scaling_setspeed()
850 static ssize_t show_scaling_setspeed(struct cpufreq_policy *policy, char *buf) in show_scaling_setspeed() argument
852 if (!policy->governor || !policy->governor->show_setspeed) in show_scaling_setspeed()
855 return policy->governor->show_setspeed(policy, buf); in show_scaling_setspeed()
861 static ssize_t show_bios_limit(struct cpufreq_policy *policy, char *buf) in show_bios_limit() argument
866 ret = cpufreq_driver->bios_limit(policy->cpu, &limit); in show_bios_limit()
870 return sprintf(buf, "%u\n", policy->cpuinfo.max_freq); in show_bios_limit()
908 struct cpufreq_policy *policy = to_policy(kobj); in show() local
912 down_read(&policy->rwsem); in show()
913 ret = fattr->show(policy, buf); in show()
914 up_read(&policy->rwsem); in show()
922 struct cpufreq_policy *policy = to_policy(kobj); in store() local
933 if (cpu_online(policy->cpu)) { in store()
934 down_write(&policy->rwsem); in store()
935 ret = fattr->store(policy, buf, count); in store()
936 up_write(&policy->rwsem); in store()
946 struct cpufreq_policy *policy = to_policy(kobj); in cpufreq_sysfs_release() local
948 complete(&policy->kobj_unregister); in cpufreq_sysfs_release()
962 static void add_cpu_dev_symlink(struct cpufreq_policy *policy, unsigned int cpu) in add_cpu_dev_symlink() argument
969 if (cpumask_test_and_set_cpu(cpu, policy->real_cpus)) in add_cpu_dev_symlink()
973 if (sysfs_create_link(&dev->kobj, &policy->kobj, "cpufreq")) in add_cpu_dev_symlink()
977 static void remove_cpu_dev_symlink(struct cpufreq_policy *policy, in remove_cpu_dev_symlink() argument
984 static int cpufreq_add_dev_interface(struct cpufreq_policy *policy) in cpufreq_add_dev_interface() argument
992 ret = sysfs_create_file(&policy->kobj, &((*drv_attr)->attr)); in cpufreq_add_dev_interface()
998 ret = sysfs_create_file(&policy->kobj, &cpuinfo_cur_freq.attr); in cpufreq_add_dev_interface()
1003 ret = sysfs_create_file(&policy->kobj, &scaling_cur_freq.attr); in cpufreq_add_dev_interface()
1008 ret = sysfs_create_file(&policy->kobj, &bios_limit.attr); in cpufreq_add_dev_interface()
1021 static int cpufreq_init_policy(struct cpufreq_policy *policy) in cpufreq_init_policy() argument
1026 memcpy(&new_policy, policy, sizeof(*policy)); in cpufreq_init_policy()
1029 gov = find_governor(policy->last_governor); in cpufreq_init_policy()
1032 policy->governor->name, policy->cpu); in cpufreq_init_policy()
1043 if (policy->last_policy) in cpufreq_init_policy()
1044 new_policy.policy = policy->last_policy; in cpufreq_init_policy()
1049 return cpufreq_set_policy(policy, &new_policy); in cpufreq_init_policy()
1052 static int cpufreq_add_policy_cpu(struct cpufreq_policy *policy, unsigned int cpu) in cpufreq_add_policy_cpu() argument
1057 if (cpumask_test_cpu(cpu, policy->cpus)) in cpufreq_add_policy_cpu()
1060 down_write(&policy->rwsem); in cpufreq_add_policy_cpu()
1062 cpufreq_stop_governor(policy); in cpufreq_add_policy_cpu()
1064 cpumask_set_cpu(cpu, policy->cpus); in cpufreq_add_policy_cpu()
1067 ret = cpufreq_start_governor(policy); in cpufreq_add_policy_cpu()
1071 up_write(&policy->rwsem); in cpufreq_add_policy_cpu()
1077 struct cpufreq_policy *policy = in handle_update() local
1079 unsigned int cpu = policy->cpu; in handle_update()
1086 struct cpufreq_policy *policy; in cpufreq_policy_alloc() local
1089 policy = kzalloc(sizeof(*policy), GFP_KERNEL); in cpufreq_policy_alloc()
1090 if (!policy) in cpufreq_policy_alloc()
1093 if (!alloc_cpumask_var(&policy->cpus, GFP_KERNEL)) in cpufreq_policy_alloc()
1096 if (!zalloc_cpumask_var(&policy->related_cpus, GFP_KERNEL)) in cpufreq_policy_alloc()
1099 if (!zalloc_cpumask_var(&policy->real_cpus, GFP_KERNEL)) in cpufreq_policy_alloc()
1102 ret = kobject_init_and_add(&policy->kobj, &ktype_cpufreq, in cpufreq_policy_alloc()
1109 INIT_LIST_HEAD(&policy->policy_list); in cpufreq_policy_alloc()
1110 init_rwsem(&policy->rwsem); in cpufreq_policy_alloc()
1111 spin_lock_init(&policy->transition_lock); in cpufreq_policy_alloc()
1112 init_waitqueue_head(&policy->transition_wait); in cpufreq_policy_alloc()
1113 init_completion(&policy->kobj_unregister); in cpufreq_policy_alloc()
1114 INIT_WORK(&policy->update, handle_update); in cpufreq_policy_alloc()
1116 policy->cpu = cpu; in cpufreq_policy_alloc()
1117 return policy; in cpufreq_policy_alloc()
1120 free_cpumask_var(policy->real_cpus); in cpufreq_policy_alloc()
1122 free_cpumask_var(policy->related_cpus); in cpufreq_policy_alloc()
1124 free_cpumask_var(policy->cpus); in cpufreq_policy_alloc()
1126 kfree(policy); in cpufreq_policy_alloc()
1131 static void cpufreq_policy_put_kobj(struct cpufreq_policy *policy) in cpufreq_policy_put_kobj() argument
1136 down_write(&policy->rwsem); in cpufreq_policy_put_kobj()
1137 cpufreq_stats_free_table(policy); in cpufreq_policy_put_kobj()
1138 kobj = &policy->kobj; in cpufreq_policy_put_kobj()
1139 cmp = &policy->kobj_unregister; in cpufreq_policy_put_kobj()
1140 up_write(&policy->rwsem); in cpufreq_policy_put_kobj()
1153 static void cpufreq_policy_free(struct cpufreq_policy *policy) in cpufreq_policy_free() argument
1160 list_del(&policy->policy_list); in cpufreq_policy_free()
1162 for_each_cpu(cpu, policy->related_cpus) in cpufreq_policy_free()
1166 cpufreq_policy_put_kobj(policy); in cpufreq_policy_free()
1167 free_cpumask_var(policy->real_cpus); in cpufreq_policy_free()
1168 free_cpumask_var(policy->related_cpus); in cpufreq_policy_free()
1169 free_cpumask_var(policy->cpus); in cpufreq_policy_free()
1170 kfree(policy); in cpufreq_policy_free()
1175 struct cpufreq_policy *policy; in cpufreq_online() local
1184 policy = per_cpu(cpufreq_cpu_data, cpu); in cpufreq_online()
1185 if (policy) { in cpufreq_online()
1186 WARN_ON(!cpumask_test_cpu(cpu, policy->related_cpus)); in cpufreq_online()
1187 if (!policy_is_inactive(policy)) in cpufreq_online()
1188 return cpufreq_add_policy_cpu(policy, cpu); in cpufreq_online()
1192 down_write(&policy->rwsem); in cpufreq_online()
1193 policy->cpu = cpu; in cpufreq_online()
1194 policy->governor = NULL; in cpufreq_online()
1195 up_write(&policy->rwsem); in cpufreq_online()
1198 policy = cpufreq_policy_alloc(cpu); in cpufreq_online()
1199 if (!policy) in cpufreq_online()
1203 cpumask_copy(policy->cpus, cpumask_of(cpu)); in cpufreq_online()
1208 ret = cpufreq_driver->init(policy); in cpufreq_online()
1214 ret = cpufreq_table_validate_and_sort(policy); in cpufreq_online()
1218 down_write(&policy->rwsem); in cpufreq_online()
1222 cpumask_copy(policy->related_cpus, policy->cpus); in cpufreq_online()
1229 cpumask_and(policy->cpus, policy->cpus, cpu_online_mask); in cpufreq_online()
1232 policy->user_policy.min = policy->min; in cpufreq_online()
1233 policy->user_policy.max = policy->max; in cpufreq_online()
1235 for_each_cpu(j, policy->related_cpus) { in cpufreq_online()
1236 per_cpu(cpufreq_cpu_data, j) = policy; in cpufreq_online()
1237 add_cpu_dev_symlink(policy, j); in cpufreq_online()
1240 policy->min = policy->user_policy.min; in cpufreq_online()
1241 policy->max = policy->user_policy.max; in cpufreq_online()
1245 policy->cur = cpufreq_driver->get(policy->cpu); in cpufreq_online()
1246 if (!policy->cur) { in cpufreq_online()
1273 ret = cpufreq_frequency_table_get_index(policy, policy->cur); in cpufreq_online()
1277 __func__, policy->cpu, policy->cur); in cpufreq_online()
1278 ret = __cpufreq_driver_target(policy, policy->cur - 1, in cpufreq_online()
1288 __func__, policy->cpu, policy->cur); in cpufreq_online()
1293 ret = cpufreq_add_dev_interface(policy); in cpufreq_online()
1297 cpufreq_stats_create_table(policy); in cpufreq_online()
1300 list_add(&policy->policy_list, &cpufreq_policy_list); in cpufreq_online()
1304 ret = cpufreq_init_policy(policy); in cpufreq_online()
1313 up_write(&policy->rwsem); in cpufreq_online()
1315 kobject_uevent(&policy->kobj, KOBJ_ADD); in cpufreq_online()
1319 cpufreq_driver->ready(policy); in cpufreq_online()
1326 for_each_cpu(j, policy->real_cpus) in cpufreq_online()
1327 remove_cpu_dev_symlink(policy, get_cpu_device(j)); in cpufreq_online()
1329 up_write(&policy->rwsem); in cpufreq_online()
1333 cpufreq_driver->exit(policy); in cpufreq_online()
1336 cpufreq_policy_free(policy); in cpufreq_online()
1347 struct cpufreq_policy *policy; in cpufreq_add_dev() local
1360 policy = per_cpu(cpufreq_cpu_data, cpu); in cpufreq_add_dev()
1361 if (policy) in cpufreq_add_dev()
1362 add_cpu_dev_symlink(policy, cpu); in cpufreq_add_dev()
1369 struct cpufreq_policy *policy; in cpufreq_offline() local
1374 policy = cpufreq_cpu_get_raw(cpu); in cpufreq_offline()
1375 if (!policy) { in cpufreq_offline()
1380 down_write(&policy->rwsem); in cpufreq_offline()
1382 cpufreq_stop_governor(policy); in cpufreq_offline()
1384 cpumask_clear_cpu(cpu, policy->cpus); in cpufreq_offline()
1386 if (policy_is_inactive(policy)) { in cpufreq_offline()
1388 strncpy(policy->last_governor, policy->governor->name, in cpufreq_offline()
1391 policy->last_policy = policy->policy; in cpufreq_offline()
1392 } else if (cpu == policy->cpu) { in cpufreq_offline()
1394 policy->cpu = cpumask_any(policy->cpus); in cpufreq_offline()
1398 if (!policy_is_inactive(policy)) { in cpufreq_offline()
1400 ret = cpufreq_start_governor(policy); in cpufreq_offline()
1409 cpufreq_driver->stop_cpu(policy); in cpufreq_offline()
1412 cpufreq_exit_governor(policy); in cpufreq_offline()
1420 cpufreq_driver->exit(policy); in cpufreq_offline()
1421 policy->freq_table = NULL; in cpufreq_offline()
1425 up_write(&policy->rwsem); in cpufreq_offline()
1437 struct cpufreq_policy *policy = per_cpu(cpufreq_cpu_data, cpu); in cpufreq_remove_dev() local
1439 if (!policy) in cpufreq_remove_dev()
1445 cpumask_clear_cpu(cpu, policy->real_cpus); in cpufreq_remove_dev()
1446 remove_cpu_dev_symlink(policy, dev); in cpufreq_remove_dev()
1448 if (cpumask_empty(policy->real_cpus)) in cpufreq_remove_dev()
1449 cpufreq_policy_free(policy); in cpufreq_remove_dev()
1461 static void cpufreq_out_of_sync(struct cpufreq_policy *policy, in cpufreq_out_of_sync() argument
1467 policy->cur, new_freq); in cpufreq_out_of_sync()
1469 freqs.old = policy->cur; in cpufreq_out_of_sync()
1472 cpufreq_freq_transition_begin(policy, &freqs); in cpufreq_out_of_sync()
1473 cpufreq_freq_transition_end(policy, &freqs, 0); in cpufreq_out_of_sync()
1485 struct cpufreq_policy *policy; in cpufreq_quick_get() local
1499 policy = cpufreq_cpu_get(cpu); in cpufreq_quick_get()
1500 if (policy) { in cpufreq_quick_get()
1501 ret_freq = policy->cur; in cpufreq_quick_get()
1502 cpufreq_cpu_put(policy); in cpufreq_quick_get()
1517 struct cpufreq_policy *policy = cpufreq_cpu_get(cpu); in cpufreq_quick_get_max() local
1520 if (policy) { in cpufreq_quick_get_max()
1521 ret_freq = policy->max; in cpufreq_quick_get_max()
1522 cpufreq_cpu_put(policy); in cpufreq_quick_get_max()
1529 static unsigned int __cpufreq_get(struct cpufreq_policy *policy) in __cpufreq_get() argument
1536 ret_freq = cpufreq_driver->get(policy->cpu); in __cpufreq_get()
1543 if (unlikely(policy_is_inactive(policy)) || policy->fast_switch_enabled) in __cpufreq_get()
1546 if (ret_freq && policy->cur && in __cpufreq_get()
1550 if (unlikely(ret_freq != policy->cur)) { in __cpufreq_get()
1551 cpufreq_out_of_sync(policy, ret_freq); in __cpufreq_get()
1552 schedule_work(&policy->update); in __cpufreq_get()
1567 struct cpufreq_policy *policy = cpufreq_cpu_get(cpu); in cpufreq_get() local
1570 if (policy) { in cpufreq_get()
1571 down_read(&policy->rwsem); in cpufreq_get()
1573 if (!policy_is_inactive(policy)) in cpufreq_get()
1574 ret_freq = __cpufreq_get(policy); in cpufreq_get()
1576 up_read(&policy->rwsem); in cpufreq_get()
1578 cpufreq_cpu_put(policy); in cpufreq_get()
1585 static unsigned int cpufreq_update_current_freq(struct cpufreq_policy *policy) in cpufreq_update_current_freq() argument
1589 new_freq = cpufreq_driver->get(policy->cpu); in cpufreq_update_current_freq()
1593 if (!policy->cur) { in cpufreq_update_current_freq()
1595 policy->cur = new_freq; in cpufreq_update_current_freq()
1596 } else if (policy->cur != new_freq && has_target()) { in cpufreq_update_current_freq()
1597 cpufreq_out_of_sync(policy, new_freq); in cpufreq_update_current_freq()
1614 int cpufreq_generic_suspend(struct cpufreq_policy *policy) in cpufreq_generic_suspend() argument
1618 if (!policy->suspend_freq) { in cpufreq_generic_suspend()
1624 policy->suspend_freq); in cpufreq_generic_suspend()
1626 ret = __cpufreq_driver_target(policy, policy->suspend_freq, in cpufreq_generic_suspend()
1630 __func__, policy->suspend_freq, ret); in cpufreq_generic_suspend()
1646 struct cpufreq_policy *policy; in cpufreq_suspend() local
1656 for_each_active_policy(policy) { in cpufreq_suspend()
1658 down_write(&policy->rwsem); in cpufreq_suspend()
1659 cpufreq_stop_governor(policy); in cpufreq_suspend()
1660 up_write(&policy->rwsem); in cpufreq_suspend()
1663 if (cpufreq_driver->suspend && cpufreq_driver->suspend(policy)) in cpufreq_suspend()
1665 policy); in cpufreq_suspend()
1680 struct cpufreq_policy *policy; in cpufreq_resume() local
1696 for_each_active_policy(policy) { in cpufreq_resume()
1697 if (cpufreq_driver->resume && cpufreq_driver->resume(policy)) { in cpufreq_resume()
1699 policy); in cpufreq_resume()
1701 down_write(&policy->rwsem); in cpufreq_resume()
1702 ret = cpufreq_start_governor(policy); in cpufreq_resume()
1703 up_write(&policy->rwsem); in cpufreq_resume()
1707 __func__, policy); in cpufreq_resume()
1861 unsigned int cpufreq_driver_fast_switch(struct cpufreq_policy *policy, in cpufreq_driver_fast_switch() argument
1864 target_freq = clamp_val(target_freq, policy->min, policy->max); in cpufreq_driver_fast_switch()
1866 return cpufreq_driver->fast_switch(policy, target_freq); in cpufreq_driver_fast_switch()
1871 static int __target_intermediate(struct cpufreq_policy *policy, in __target_intermediate() argument
1876 freqs->new = cpufreq_driver->get_intermediate(policy, index); in __target_intermediate()
1883 __func__, policy->cpu, freqs->old, freqs->new); in __target_intermediate()
1885 cpufreq_freq_transition_begin(policy, freqs); in __target_intermediate()
1886 ret = cpufreq_driver->target_intermediate(policy, index); in __target_intermediate()
1887 cpufreq_freq_transition_end(policy, freqs, ret); in __target_intermediate()
1896 static int __target_index(struct cpufreq_policy *policy, int index) in __target_index() argument
1898 struct cpufreq_freqs freqs = {.old = policy->cur, .flags = 0}; in __target_index()
1900 unsigned int newfreq = policy->freq_table[index].frequency; in __target_index()
1904 if (newfreq == policy->cur) in __target_index()
1911 retval = __target_intermediate(policy, &freqs, index); in __target_index()
1923 __func__, policy->cpu, freqs.old, freqs.new); in __target_index()
1925 cpufreq_freq_transition_begin(policy, &freqs); in __target_index()
1928 retval = cpufreq_driver->target_index(policy, index); in __target_index()
1934 cpufreq_freq_transition_end(policy, &freqs, retval); in __target_index()
1944 freqs.new = policy->restore_freq; in __target_index()
1945 cpufreq_freq_transition_begin(policy, &freqs); in __target_index()
1946 cpufreq_freq_transition_end(policy, &freqs, 0); in __target_index()
1953 int __cpufreq_driver_target(struct cpufreq_policy *policy, in __cpufreq_driver_target() argument
1964 target_freq = clamp_val(target_freq, policy->min, policy->max); in __cpufreq_driver_target()
1967 policy->cpu, target_freq, relation, old_target_freq); in __cpufreq_driver_target()
1975 if (target_freq == policy->cur) in __cpufreq_driver_target()
1979 policy->restore_freq = policy->cur; in __cpufreq_driver_target()
1982 return cpufreq_driver->target(policy, target_freq, relation); in __cpufreq_driver_target()
1987 index = cpufreq_frequency_table_target(policy, target_freq, relation); in __cpufreq_driver_target()
1989 return __target_index(policy, index); in __cpufreq_driver_target()
1993 int cpufreq_driver_target(struct cpufreq_policy *policy, in cpufreq_driver_target() argument
1999 down_write(&policy->rwsem); in cpufreq_driver_target()
2001 ret = __cpufreq_driver_target(policy, target_freq, relation); in cpufreq_driver_target()
2003 up_write(&policy->rwsem); in cpufreq_driver_target()
2014 static int cpufreq_init_governor(struct cpufreq_policy *policy) in cpufreq_init_governor() argument
2025 if (!policy->governor) in cpufreq_init_governor()
2029 if (policy->governor->dynamic_switching && in cpufreq_init_governor()
2035 policy->governor->name, gov->name); in cpufreq_init_governor()
2036 policy->governor = gov; in cpufreq_init_governor()
2042 if (!try_module_get(policy->governor->owner)) in cpufreq_init_governor()
2045 pr_debug("%s: for CPU %u\n", __func__, policy->cpu); in cpufreq_init_governor()
2047 if (policy->governor->init) { in cpufreq_init_governor()
2048 ret = policy->governor->init(policy); in cpufreq_init_governor()
2050 module_put(policy->governor->owner); in cpufreq_init_governor()
2058 static void cpufreq_exit_governor(struct cpufreq_policy *policy) in cpufreq_exit_governor() argument
2060 if (cpufreq_suspended || !policy->governor) in cpufreq_exit_governor()
2063 pr_debug("%s: for CPU %u\n", __func__, policy->cpu); in cpufreq_exit_governor()
2065 if (policy->governor->exit) in cpufreq_exit_governor()
2066 policy->governor->exit(policy); in cpufreq_exit_governor()
2068 module_put(policy->governor->owner); in cpufreq_exit_governor()
2071 static int cpufreq_start_governor(struct cpufreq_policy *policy) in cpufreq_start_governor() argument
2078 if (!policy->governor) in cpufreq_start_governor()
2081 pr_debug("%s: for CPU %u\n", __func__, policy->cpu); in cpufreq_start_governor()
2084 cpufreq_update_current_freq(policy); in cpufreq_start_governor()
2086 if (policy->governor->start) { in cpufreq_start_governor()
2087 ret = policy->governor->start(policy); in cpufreq_start_governor()
2092 if (policy->governor->limits) in cpufreq_start_governor()
2093 policy->governor->limits(policy); in cpufreq_start_governor()
2098 static void cpufreq_stop_governor(struct cpufreq_policy *policy) in cpufreq_stop_governor() argument
2100 if (cpufreq_suspended || !policy->governor) in cpufreq_stop_governor()
2103 pr_debug("%s: for CPU %u\n", __func__, policy->cpu); in cpufreq_stop_governor()
2105 if (policy->governor->stop) in cpufreq_stop_governor()
2106 policy->governor->stop(policy); in cpufreq_stop_governor()
2109 static void cpufreq_governor_limits(struct cpufreq_policy *policy) in cpufreq_governor_limits() argument
2111 if (cpufreq_suspended || !policy->governor) in cpufreq_governor_limits()
2114 pr_debug("%s: for CPU %u\n", __func__, policy->cpu); in cpufreq_governor_limits()
2116 if (policy->governor->limits) in cpufreq_governor_limits()
2117 policy->governor->limits(policy); in cpufreq_governor_limits()
2145 struct cpufreq_policy *policy; in cpufreq_unregister_governor() local
2156 for_each_inactive_policy(policy) { in cpufreq_unregister_governor()
2157 if (!strcmp(policy->last_governor, governor->name)) { in cpufreq_unregister_governor()
2158 policy->governor = NULL; in cpufreq_unregister_governor()
2159 strcpy(policy->last_governor, "\0"); in cpufreq_unregister_governor()
2182 int cpufreq_get_policy(struct cpufreq_policy *policy, unsigned int cpu) in cpufreq_get_policy() argument
2185 if (!policy) in cpufreq_get_policy()
2192 memcpy(policy, cpu_policy, sizeof(*policy)); in cpufreq_get_policy()
2203 static int cpufreq_set_policy(struct cpufreq_policy *policy, in cpufreq_set_policy() argument
2212 memcpy(&new_policy->cpuinfo, &policy->cpuinfo, sizeof(policy->cpuinfo)); in cpufreq_set_policy()
2242 policy->min = new_policy->min; in cpufreq_set_policy()
2243 policy->max = new_policy->max; in cpufreq_set_policy()
2244 trace_cpu_frequency_limits(policy); in cpufreq_set_policy()
2246 policy->cached_target_freq = UINT_MAX; in cpufreq_set_policy()
2249 policy->min, policy->max); in cpufreq_set_policy()
2252 policy->policy = new_policy->policy; in cpufreq_set_policy()
2257 if (new_policy->governor == policy->governor) { in cpufreq_set_policy()
2259 cpufreq_governor_limits(policy); in cpufreq_set_policy()
2266 old_gov = policy->governor; in cpufreq_set_policy()
2269 cpufreq_stop_governor(policy); in cpufreq_set_policy()
2270 cpufreq_exit_governor(policy); in cpufreq_set_policy()
2274 policy->governor = new_policy->governor; in cpufreq_set_policy()
2275 ret = cpufreq_init_governor(policy); in cpufreq_set_policy()
2277 ret = cpufreq_start_governor(policy); in cpufreq_set_policy()
2282 cpufreq_exit_governor(policy); in cpufreq_set_policy()
2286 pr_debug("starting governor %s failed\n", policy->governor->name); in cpufreq_set_policy()
2288 policy->governor = old_gov; in cpufreq_set_policy()
2289 if (cpufreq_init_governor(policy)) in cpufreq_set_policy()
2290 policy->governor = NULL; in cpufreq_set_policy()
2292 cpufreq_start_governor(policy); in cpufreq_set_policy()
2307 struct cpufreq_policy *policy = cpufreq_cpu_get(cpu); in cpufreq_update_policy() local
2310 if (!policy) in cpufreq_update_policy()
2313 down_write(&policy->rwsem); in cpufreq_update_policy()
2315 if (policy_is_inactive(policy)) in cpufreq_update_policy()
2319 memcpy(&new_policy, policy, sizeof(*policy)); in cpufreq_update_policy()
2320 new_policy.min = policy->user_policy.min; in cpufreq_update_policy()
2321 new_policy.max = policy->user_policy.max; in cpufreq_update_policy()
2331 new_policy.cur = cpufreq_update_current_freq(policy); in cpufreq_update_policy()
2336 cpufreq_set_policy(policy, &new_policy); in cpufreq_update_policy()
2339 up_write(&policy->rwsem); in cpufreq_update_policy()
2341 cpufreq_cpu_put(policy); in cpufreq_update_policy()
2350 struct cpufreq_policy *policy; in cpufreq_boost_set_sw() local
2353 for_each_active_policy(policy) { in cpufreq_boost_set_sw()
2354 if (!policy->freq_table) in cpufreq_boost_set_sw()
2357 ret = cpufreq_frequency_table_cpuinfo(policy, in cpufreq_boost_set_sw()
2358 policy->freq_table); in cpufreq_boost_set_sw()
2365 down_write(&policy->rwsem); in cpufreq_boost_set_sw()
2366 policy->user_policy.max = policy->max; in cpufreq_boost_set_sw()
2367 cpufreq_governor_limits(policy); in cpufreq_boost_set_sw()
2368 up_write(&policy->rwsem); in cpufreq_boost_set_sw()