diff options
author | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2016-06-13 23:33:17 +0200 |
---|---|---|
committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2016-06-13 23:33:17 +0200 |
commit | bb4b9933e2bc0554cf4db37aa07b19ff69a85f8f (patch) | |
tree | 92ec230e0292874d6a53ff33534e8637fa315479 /drivers/cpufreq | |
parent | 5edb56491d4812c42175980759da53388e5d86f5 (diff) | |
parent | f6709b8aa78fb6765c443ad6b70fdaf48b89d95d (diff) |
Merge back earlier cpufreq changes for v4.8.
Diffstat (limited to 'drivers/cpufreq')
-rw-r--r-- | drivers/cpufreq/Kconfig | 13 | ||||
-rw-r--r-- | drivers/cpufreq/amd_freq_sensitivity.c | 10 | ||||
-rw-r--r-- | drivers/cpufreq/cpufreq.c | 186 | ||||
-rw-r--r-- | drivers/cpufreq/cpufreq_conservative.c | 51 | ||||
-rw-r--r-- | drivers/cpufreq/cpufreq_governor.c | 73 | ||||
-rw-r--r-- | drivers/cpufreq/cpufreq_governor.h | 24 | ||||
-rw-r--r-- | drivers/cpufreq/cpufreq_ondemand.c | 40 | ||||
-rw-r--r-- | drivers/cpufreq/cpufreq_ondemand.h | 1 | ||||
-rw-r--r-- | drivers/cpufreq/cpufreq_performance.c | 19 | ||||
-rw-r--r-- | drivers/cpufreq/cpufreq_powersave.c | 19 | ||||
-rw-r--r-- | drivers/cpufreq/cpufreq_stats.c | 157 | ||||
-rw-r--r-- | drivers/cpufreq/cpufreq_userspace.c | 104 | ||||
-rw-r--r-- | drivers/cpufreq/davinci-cpufreq.c | 22 | ||||
-rw-r--r-- | drivers/cpufreq/freq_table.c | 37 | ||||
-rw-r--r-- | drivers/cpufreq/powernv-cpufreq.c | 5 | ||||
-rw-r--r-- | drivers/cpufreq/ppc_cbe_cpufreq_pmi.c | 3 | ||||
-rw-r--r-- | drivers/cpufreq/s3c24xx-cpufreq.c | 33 | ||||
-rw-r--r-- | drivers/cpufreq/s5pv210-cpufreq.c | 8 |
18 files changed, 309 insertions, 496 deletions
diff --git a/drivers/cpufreq/Kconfig b/drivers/cpufreq/Kconfig index b7445b6ae5a4..c822d72629d5 100644 --- a/drivers/cpufreq/Kconfig +++ b/drivers/cpufreq/Kconfig @@ -31,23 +31,18 @@ config CPU_FREQ_BOOST_SW depends on THERMAL config CPU_FREQ_STAT - tristate "CPU frequency translation statistics" + bool "CPU frequency transition statistics" default y help - This driver exports CPU frequency statistics information through sysfs - file system. - - To compile this driver as a module, choose M here: the - module will be called cpufreq_stats. + Export CPU frequency statistics information through sysfs. If in doubt, say N. config CPU_FREQ_STAT_DETAILS - bool "CPU frequency translation statistics details" + bool "CPU frequency transition statistics details" depends on CPU_FREQ_STAT help - This will show detail CPU frequency translation table in sysfs file - system. + Show detailed CPU frequency transition table in sysfs. If in doubt, say N. diff --git a/drivers/cpufreq/amd_freq_sensitivity.c b/drivers/cpufreq/amd_freq_sensitivity.c index 404360cad25c..6d5dc04c3a37 100644 --- a/drivers/cpufreq/amd_freq_sensitivity.c +++ b/drivers/cpufreq/amd_freq_sensitivity.c @@ -48,9 +48,8 @@ static unsigned int amd_powersave_bias_target(struct cpufreq_policy *policy, struct policy_dbs_info *policy_dbs = policy->governor_data; struct dbs_data *od_data = policy_dbs->dbs_data; struct od_dbs_tuners *od_tuners = od_data->tuners; - struct od_policy_dbs_info *od_info = to_dbs_info(policy_dbs); - if (!od_info->freq_table) + if (!policy->freq_table) return freq_next; rdmsr_on_cpu(policy->cpu, MSR_AMD64_FREQ_SENSITIVITY_ACTUAL, @@ -92,10 +91,9 @@ static unsigned int amd_powersave_bias_target(struct cpufreq_policy *policy, else { unsigned int index; - cpufreq_frequency_table_target(policy, - od_info->freq_table, policy->cur - 1, - CPUFREQ_RELATION_H, &index); - freq_next = od_info->freq_table[index].frequency; + index = cpufreq_frequency_table_target(policy, + policy->cur - 1, CPUFREQ_RELATION_H); + freq_next = policy->freq_table[index].frequency; } data->freq_prev = freq_next; diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c index 9009295f5134..9ae58a18ccb9 100644 --- a/drivers/cpufreq/cpufreq.c +++ b/drivers/cpufreq/cpufreq.c @@ -74,19 +74,12 @@ static inline bool has_target(void) } /* internal prototypes */ -static int cpufreq_governor(struct cpufreq_policy *policy, unsigned int event); static unsigned int __cpufreq_get(struct cpufreq_policy *policy); +static int cpufreq_init_governor(struct cpufreq_policy *policy); +static void cpufreq_exit_governor(struct cpufreq_policy *policy); static int cpufreq_start_governor(struct cpufreq_policy *policy); - -static inline void cpufreq_exit_governor(struct cpufreq_policy *policy) -{ - (void)cpufreq_governor(policy, CPUFREQ_GOV_POLICY_EXIT); -} - -static inline void cpufreq_stop_governor(struct cpufreq_policy *policy) -{ - (void)cpufreq_governor(policy, CPUFREQ_GOV_STOP); -} +static void cpufreq_stop_governor(struct cpufreq_policy *policy); +static void cpufreq_governor_limits(struct cpufreq_policy *policy); /** * Two notifier lists: the "policy" list is involved in the @@ -133,15 +126,6 @@ struct kobject *get_governor_parent_kobj(struct cpufreq_policy *policy) } EXPORT_SYMBOL_GPL(get_governor_parent_kobj); -struct cpufreq_frequency_table *cpufreq_frequency_get_table(unsigned int cpu) -{ - struct cpufreq_policy *policy = per_cpu(cpufreq_cpu_data, cpu); - - return policy && !policy_is_inactive(policy) ? - policy->freq_table : NULL; -} -EXPORT_SYMBOL_GPL(cpufreq_frequency_get_table); - static inline u64 get_cpu_idle_time_jiffy(unsigned int cpu, u64 *wall) { u64 idle_time; @@ -354,6 +338,7 @@ static void __cpufreq_notify_transition(struct cpufreq_policy *policy, pr_debug("FREQ: %lu - CPU: %lu\n", (unsigned long)freqs->new, (unsigned long)freqs->cpu); trace_cpu_frequency(freqs->new, freqs->cpu); + cpufreq_stats_record_transition(policy, freqs->new); srcu_notifier_call_chain(&cpufreq_transition_notifier_list, CPUFREQ_POSTCHANGE, freqs); if (likely(policy) && likely(policy->cpu == freqs->cpu)) @@ -1115,6 +1100,7 @@ static void cpufreq_policy_put_kobj(struct cpufreq_policy *policy, bool notify) CPUFREQ_REMOVE_POLICY, policy); down_write(&policy->rwsem); + cpufreq_stats_free_table(policy); cpufreq_remove_dev_symlink(policy); kobj = &policy->kobj; cmp = &policy->kobj_unregister; @@ -1265,13 +1251,12 @@ static int cpufreq_online(unsigned int cpu) } } - blocking_notifier_call_chain(&cpufreq_policy_notifier_list, - CPUFREQ_START, policy); - if (new_policy) { ret = cpufreq_add_dev_interface(policy); if (ret) goto out_exit_policy; + + cpufreq_stats_create_table(policy); blocking_notifier_call_chain(&cpufreq_policy_notifier_list, CPUFREQ_CREATE_POLICY, policy); @@ -1280,6 +1265,9 @@ static int cpufreq_online(unsigned int cpu) write_unlock_irqrestore(&cpufreq_driver_lock, flags); } + blocking_notifier_call_chain(&cpufreq_policy_notifier_list, + CPUFREQ_START, policy); + ret = cpufreq_init_policy(policy); if (ret) { pr_err("%s: Failed to initialize policy for cpu: %d (%d)\n", @@ -1864,14 +1852,17 @@ static int __target_intermediate(struct cpufreq_policy *policy, return ret; } -static int __target_index(struct cpufreq_policy *policy, - struct cpufreq_frequency_table *freq_table, int index) +static int __target_index(struct cpufreq_policy *policy, int index) { struct cpufreq_freqs freqs = {.old = policy->cur, .flags = 0}; unsigned int intermediate_freq = 0; + unsigned int newfreq = policy->freq_table[index].frequency; int retval = -EINVAL; bool notify; + if (newfreq == policy->cur) + return 0; + notify = !(cpufreq_driver->flags & CPUFREQ_ASYNC_NOTIFICATION); if (notify) { /* Handle switching to intermediate frequency */ @@ -1886,7 +1877,7 @@ static int __target_index(struct cpufreq_policy *policy, freqs.old = freqs.new; } - freqs.new = freq_table[index].frequency; + freqs.new = newfreq; pr_debug("%s: cpu: %d, oldfreq: %u, new freq: %u\n", __func__, policy->cpu, freqs.old, freqs.new); @@ -1923,17 +1914,13 @@ int __cpufreq_driver_target(struct cpufreq_policy *policy, unsigned int relation) { unsigned int old_target_freq = target_freq; - struct cpufreq_frequency_table *freq_table; - int index, retval; + int index; if (cpufreq_disabled()) return -ENODEV; /* Make sure that target_freq is within supported range */ - if (target_freq > policy->max) - target_freq = policy->max; - if (target_freq < policy->min) - target_freq = policy->min; + target_freq = clamp_val(target_freq, policy->min, policy->max); pr_debug("target for CPU %u: %u kHz, relation %u, requested %u kHz\n", policy->cpu, target_freq, relation, old_target_freq); @@ -1956,23 +1943,9 @@ int __cpufreq_driver_target(struct cpufreq_policy *policy, if (!cpufreq_driver->target_index) return -EINVAL; - freq_table = cpufreq_frequency_get_table(policy->cpu); - if (unlikely(!freq_table)) { - pr_err("%s: Unable to find freq_table\n", __func__); - return -EINVAL; - } - - retval = cpufreq_frequency_table_target(policy, freq_table, target_freq, - relation, &index); - if (unlikely(retval)) { - pr_err("%s: Unable to find matching freq\n", __func__); - return retval; - } - - if (freq_table[index].frequency == policy->cur) - return 0; + index = cpufreq_frequency_table_target(policy, target_freq, relation); - return __target_index(policy, freq_table, index); + return __target_index(policy, index); } EXPORT_SYMBOL_GPL(__cpufreq_driver_target); @@ -1997,7 +1970,7 @@ __weak struct cpufreq_governor *cpufreq_fallback_governor(void) return NULL; } -static int cpufreq_governor(struct cpufreq_policy *policy, unsigned int event) +static int cpufreq_init_governor(struct cpufreq_policy *policy) { int ret; @@ -2025,36 +1998,82 @@ static int cpufreq_governor(struct cpufreq_policy *policy, unsigned int event) } } - if (event == CPUFREQ_GOV_POLICY_INIT) - if (!try_module_get(policy->governor->owner)) - return -EINVAL; - - pr_debug("%s: for CPU %u, event %u\n", __func__, policy->cpu, event); + if (!try_module_get(policy->governor->owner)) + return -EINVAL; - ret = policy->governor->governor(policy, event); + pr_debug("%s: for CPU %u\n", __func__, policy->cpu); - if (event == CPUFREQ_GOV_POLICY_INIT) { - if (ret) + if (policy->governor->init) { + ret = policy->governor->init(policy); + if (ret) { module_put(policy->governor->owner); - else - policy->governor->initialized++; - } else if (event == CPUFREQ_GOV_POLICY_EXIT) { - policy->governor->initialized--; - module_put(policy->governor->owner); + return ret; + } } - return ret; + return 0; +} + +static void cpufreq_exit_governor(struct cpufreq_policy *policy) +{ + if (cpufreq_suspended || !policy->governor) + return; + + pr_debug("%s: for CPU %u\n", __func__, policy->cpu); + + if (policy->governor->exit) + policy->governor->exit(policy); + + module_put(policy->governor->owner); } static int cpufreq_start_governor(struct cpufreq_policy *policy) { int ret; + if (cpufreq_suspended) + return 0; + + if (!policy->governor) + return -EINVAL; + + pr_debug("%s: for CPU %u\n", __func__, policy->cpu); + if (cpufreq_driver->get && !cpufreq_driver->setpolicy) cpufreq_update_current_freq(policy); - ret = cpufreq_governor(policy, CPUFREQ_GOV_START); - return ret ? ret : cpufreq_governor(policy, CPUFREQ_GOV_LIMITS); + if (policy->governor->start) { + ret = policy->governor->start(policy); + if (ret) + return ret; + } + + if (policy->governor->limits) + policy->governor->limits(policy); + + return 0; +} + +static void cpufreq_stop_governor(struct cpufreq_policy *policy) +{ + if (cpufreq_suspended || !policy->governor) + return; + + pr_debug("%s: for CPU %u\n", __func__, policy->cpu); + + if (policy->governor->stop) + policy->governor->stop(policy); +} + +static void cpufreq_governor_limits(struct cpufreq_policy *policy) +{ + if (cpufreq_suspended || !policy->governor) + return; + + pr_debug("%s: for CPU %u\n", __func__, policy->cpu); + + if (policy->governor->limits) + policy->governor->limits(policy); } int cpufreq_register_governor(struct cpufreq_governor *governor) @@ -2069,7 +2088,6 @@ int cpufreq_register_governor(struct cpufreq_governor *governor) mutex_lock(&cpufreq_governor_mutex); - governor->initialized = 0; err = -EBUSY; if (!find_governor(governor->name)) { err = 0; @@ -2195,7 +2213,8 @@ static int cpufreq_set_policy(struct cpufreq_policy *policy, if (new_policy->governor == policy->governor) { pr_debug("cpufreq: governor limits update\n"); - return cpufreq_governor(policy, CPUFREQ_GOV_LIMITS); + cpufreq_governor_limits(policy); + return 0; } pr_debug("governor switch\n"); @@ -2210,7 +2229,7 @@ static int cpufreq_set_policy(struct cpufreq_policy *policy, /* start new governor */ policy->governor = new_policy->governor; - ret = cpufreq_governor(policy, CPUFREQ_GOV_POLICY_INIT); + ret = cpufreq_init_governor(policy); if (!ret) { ret = cpufreq_start_governor(policy); if (!ret) { @@ -2224,7 +2243,7 @@ static int cpufreq_set_policy(struct cpufreq_policy *policy, pr_debug("starting governor %s failed\n", policy->governor->name); if (old_gov) { policy->governor = old_gov; - if (cpufreq_governor(policy, CPUFREQ_GOV_POLICY_INIT)) + if (cpufreq_init_governor(policy)) policy->governor = NULL; else cpufreq_start_governor(policy); @@ -2305,26 +2324,25 @@ static struct notifier_block __refdata cpufreq_cpu_notifier = { *********************************************************************/ static int cpufreq_boost_set_sw(int state) { - struct cpufreq_frequency_table *freq_table; struct cpufreq_policy *policy; int ret = -EINVAL; for_each_active_policy(policy) { - freq_table = cpufreq_frequency_get_table(policy->cpu); - if (freq_table) { - ret = cpufreq_frequency_table_cpuinfo(policy, - freq_table); - if (ret) { - pr_err("%s: Policy frequency update failed\n", - __func__); - break; - } - - down_write(&policy->rwsem); - policy->user_policy.max = policy->max; - cpufreq_governor(policy, CPUFREQ_GOV_LIMITS); - up_write(&policy->rwsem); + if (!policy->freq_table) + continue; + + ret = cpufreq_frequency_table_cpuinfo(policy, + policy->freq_table); + if (ret) { + pr_err("%s: Policy frequency update failed\n", + __func__); + break; } + + down_write(&policy->rwsem); + policy->user_policy.max = policy->max; + cpufreq_governor_limits(policy); + up_write(&policy->rwsem); } return ret; diff --git a/drivers/cpufreq/cpufreq_conservative.c b/drivers/cpufreq/cpufreq_conservative.c index 316df247e00d..f967ec6c5720 100644 --- a/drivers/cpufreq/cpufreq_conservative.c +++ b/drivers/cpufreq/cpufreq_conservative.c @@ -127,7 +127,6 @@ static struct notifier_block cs_cpufreq_notifier_block = { }; /************************** sysfs interface ************************/ -static struct dbs_governor cs_dbs_gov; static ssize_t store_sampling_down_factor(struct gov_attr_set *attr_set, const char *buf, size_t count) @@ -255,6 +254,13 @@ static struct attribute *cs_attributes[] = { /************************** sysfs end ************************/ +struct cs_governor { + struct dbs_governor dbs_gov; + unsigned int usage_count; +}; + +static struct cs_governor cs_gov; + static struct policy_dbs_info *cs_alloc(void) { struct cs_policy_dbs_info *dbs_info; @@ -268,15 +274,13 @@ static void cs_free(struct policy_dbs_info *policy_dbs) kfree(to_dbs_info(policy_dbs)); } -static int cs_init(struct dbs_data *dbs_data, bool notify) +static int cs_init(struct dbs_data *dbs_data) { struct cs_dbs_tuners *tuners; tuners = kzalloc(sizeof(*tuners), GFP_KERNEL); - if (!tuners) { - pr_err("%s: kzalloc failed\n", __func__); + if (!tuners) return -ENOMEM; - } tuners->down_threshold = DEF_FREQUENCY_DOWN_THRESHOLD; tuners->freq_step = DEF_FREQUENCY_STEP; @@ -288,16 +292,22 @@ static int cs_init(struct dbs_data *dbs_data, bool notify) dbs_data->min_sampling_rate = MIN_SAMPLING_RATE_RATIO * jiffies_to_usecs(10); - if (notify) + /* + * This function and cs_exit() are only called under gov_dbs_data_mutex + * which is global, so the cs_gov.usage_count accesses are guaranteed + * to be serialized. + */ + if (!cs_gov.usage_count++) cpufreq_register_notifier(&cs_cpufreq_notifier_block, CPUFREQ_TRANSITION_NOTIFIER); return 0; } -static void cs_exit(struct dbs_data *dbs_data, bool notify) +static void cs_exit(struct dbs_data *dbs_data) { - if (notify) + /* Protected by gov_dbs_data_mutex - see the comment in cs_init(). */ + if (!--cs_gov.usage_count) cpufreq_unregister_notifier(&cs_cpufreq_notifier_block, CPUFREQ_TRANSITION_NOTIFIER); @@ -312,23 +322,20 @@ static void cs_start(struct cpufreq_policy *policy) dbs_info->requested_freq = policy->cur; } -static struct dbs_governor cs_dbs_gov = { - .gov = { - .name = "conservative", - .governor = cpufreq_governor_dbs, - .max_transition_latency = TRANSITION_LATENCY_LIMIT, - .owner = THIS_MODULE, +static struct cs_governor cs_gov = { + .dbs_gov = { + .gov = CPUFREQ_DBS_GOVERNOR_INITIALIZER("conservative"), + .kobj_type = { .default_attrs = cs_attributes }, + .gov_dbs_timer = cs_dbs_timer, + .alloc = cs_alloc, + .free = cs_free, + .init = cs_init, + .exit = cs_exit, + .start = cs_start, }, - .kobj_type = { .default_attrs = cs_attributes }, - .gov_dbs_timer = cs_dbs_timer, - .alloc = cs_alloc, - .free = cs_free, - .init = cs_init, - .exit = cs_exit, - .start = cs_start, }; -#define CPU_FREQ_GOV_CONSERVATIVE (&cs_dbs_gov.gov) +#define CPU_FREQ_GOV_CONSERVATIVE (&cs_gov.dbs_gov.gov) static int dbs_cpufreq_notifier(struct notifier_block *nb, unsigned long val, void *data) diff --git a/drivers/cpufreq/cpufreq_governor.c b/drivers/cpufreq/cpufreq_governor.c index be498d56dd69..e415349ab31b 100644 --- a/drivers/cpufreq/cpufreq_governor.c +++ b/drivers/cpufreq/cpufreq_governor.c @@ -336,17 +336,6 @@ static inline void gov_clear_update_util(struct cpufreq_policy *policy) synchronize_sched(); } -static void gov_cancel_work(struct cpufreq_policy *policy) -{ - struct policy_dbs_info *policy_dbs = policy->governor_data; - - gov_clear_update_util(policy_dbs->policy); - irq_work_sync(&policy_dbs->irq_work); - cancel_work_sync(&policy_dbs->work); - atomic_set(&policy_dbs->work_count, 0); - policy_dbs->work_in_progress = false; -} - static struct policy_dbs_info *alloc_policy_dbs_info(struct cpufreq_policy *policy, struct dbs_governor *gov) { @@ -389,7 +378,7 @@ static void free_policy_dbs_info(struct policy_dbs_info *policy_dbs, gov->free(policy_dbs); } -static int cpufreq_governor_init(struct cpufreq_policy *policy) +int cpufreq_dbs_governor_init(struct cpufreq_policy *policy) { struct dbs_governor *gov = dbs_governor_of(policy); struct dbs_data *dbs_data; @@ -429,7 +418,7 @@ static int cpufreq_governor_init(struct cpufreq_policy *policy) gov_attr_set_init(&dbs_data->attr_set, &policy_dbs->list); - ret = gov->init(dbs_data, !policy->governor->initialized); + ret = gov->init(dbs_data); if (ret) goto free_policy_dbs_info; @@ -458,13 +447,13 @@ static int cpufreq_governor_init(struct cpufreq_policy *policy) goto out; /* Failure, so roll back. */ - pr_err("cpufreq: Governor initialization failed (dbs_data kobject init error %d)\n", ret); + pr_err("initialization failed (dbs_data kobject init error %d)\n", ret); policy->governor_data = NULL; if (!have_governor_per_policy()) gov->gdbs_data = NULL; - gov->exit(dbs_data, !policy->governor->initialized); + gov->exit(dbs_data); kfree(dbs_data); free_policy_dbs_info: @@ -474,8 +463,9 @@ out: mutex_unlock(&gov_dbs_data_mutex); return ret; } +EXPORT_SYMBOL_GPL(cpufreq_dbs_governor_init); -static int cpufreq_governor_exit(struct cpufreq_policy *policy) +void cpufreq_dbs_governor_exit(struct cpufreq_policy *policy) { struct dbs_governor *gov = dbs_governor_of(policy); struct policy_dbs_info *policy_dbs = policy->governor_data; @@ -493,17 +483,17 @@ static int cpufreq_governor_exit(struct cpufreq_policy *policy) if (!have_governor_per_policy()) gov->gdbs_data = NULL; - gov->exit(dbs_data, policy->governor->initialized == 1); + gov->exit(dbs_data); kfree(dbs_data); } free_policy_dbs_info(policy_dbs, gov); mutex_unlock(&gov_dbs_data_mutex); - return 0; } +EXPORT_SYMBOL_GPL(cpufreq_dbs_governor_exit); -static int cpufreq_governor_start(struct cpufreq_policy *policy) +int cpufreq_dbs_governor_start(struct cpufreq_policy *policy) { struct dbs_governor *gov = dbs_governor_of(policy); struct policy_dbs_info *policy_dbs = policy->governor_data; @@ -539,47 +529,28 @@ static int cpufreq_governor_start(struct cpufreq_policy *policy) gov_set_update_util(policy_dbs, sampling_rate); return 0; } +EXPORT_SYMBOL_GPL(cpufreq_dbs_governor_start); -static int cpufreq_governor_stop(struct cpufreq_policy *policy) +void cpufreq_dbs_governor_stop(struct cpufreq_policy *policy) { - gov_cancel_work(policy); - return 0; + struct policy_dbs_info *policy_dbs = policy->governor_data; + + gov_clear_update_util(policy_dbs->policy); + irq_work_sync(&policy_dbs->irq_work); + cancel_work_sync(&policy_dbs->work); + atomic_set(&policy_dbs->work_count, 0); + policy_dbs->work_in_progress = false; } +EXPORT_SYMBOL_GPL(cpufreq_dbs_governor_stop); -static int cpufreq_governor_limits(struct cpufreq_policy *policy) +void cpufreq_dbs_governor_limits(struct cpufreq_policy *policy) { struct policy_dbs_info *policy_dbs = policy->governor_data; mutex_lock(&policy_dbs->timer_mutex); - - if (policy->max < policy->cur) - __cpufreq_driver_target(policy, policy->max, CPUFREQ_RELATION_H); - else if (policy->min > policy->cur) - __cpufreq_driver_target(policy, policy->min, CPUFREQ_RELATION_L); - + cpufreq_policy_apply_limits(policy); gov_update_sample_delay(policy_dbs, 0); mutex_unlock(&policy_dbs->timer_mutex); - - return 0; -} - -int cpufreq_governor_dbs(struct cpufreq_policy *policy, unsigned int event) -{ - if (event == CPUFREQ_GOV_POLICY_INIT) { - return cpufreq_governor_init(policy); - } else if (policy->governor_data) { - switch (event) { - case CPUFREQ_GOV_POLICY_EXIT: - return cpufreq_governor_exit(policy); - case CPUFREQ_GOV_START: - return cpufreq_governor_start(policy); - case CPUFREQ_GOV_STOP: - return cpufreq_governor_stop(policy); - case CPUFREQ_GOV_LIMITS: - return cpufreq_governor_limits(policy); - } - } - return -EINVAL; } -EXPORT_SYMBOL_GPL(cpufreq_governor_dbs); +EXPORT_SYMBOL_GPL(cpufreq_dbs_governor_limits); diff --git a/drivers/cpufreq/cpufreq_governor.h b/drivers/cpufreq/cpufreq_governor.h index 34eb214b6d57..ef1037e9c92b 100644 --- a/drivers/cpufreq/cpufreq_governor.h +++ b/drivers/cpufreq/cpufreq_governor.h @@ -138,8 +138,8 @@ struct dbs_governor { unsigned int (*gov_dbs_timer)(struct cpufreq_policy *policy); struct policy_dbs_info *(*alloc)(void); void (*free)(struct policy_dbs_info *policy_dbs); - int (*init)(struct dbs_data *dbs_data, bool notify); - void (*exit)(struct dbs_data *dbs_data, bool notify); + int (*init)(struct dbs_data *dbs_data); + void (*exit)(struct dbs_data *dbs_data); void (*start)(struct cpufreq_policy *policy); }; @@ -148,6 +148,25 @@ static inline struct dbs_governor *dbs_governor_of(struct cpufreq_policy *policy return container_of(policy->governor, struct dbs_governor, gov); } +/* Governor callback routines */ +int cpufreq_dbs_governor_init(struct cpufreq_policy *policy); +void cpufreq_dbs_governor_exit(struct cpufreq_policy *policy); +int cpufreq_dbs_governor_start(struct cpufreq_policy *policy); +void cpufreq_dbs_governor_stop(struct cpufreq_policy *policy); +void cpufreq_dbs_governor_limits(struct cpufreq_policy *policy); + +#define CPUFREQ_DBS_GOVERNOR_INITIALIZER(_name_) \ + { \ + .name = _name_, \ + .max_transition_latency = TRANSITION_LATENCY_LIMIT, \ + .owner = THIS_MODULE, \ + .init = cpufreq_dbs_governor_init, \ + .exit = cpufreq_dbs_governor_exit, \ + .start = cpufreq_dbs_governor_start, \ + .stop = cpufreq_dbs_governor_stop, \ + .limits = cpufreq_dbs_governor_limits, \ + } + /* Governor specific operations */ struct od_ops { unsigned int (*powersave_bias_target)(struct cpufreq_policy *policy, @@ -155,7 +174,6 @@ struct od_ops { }; unsigned int dbs_update(struct cpufreq_policy *policy); -int cpufreq_governor_dbs(struct cpufreq_policy *policy, unsigned int event); void od_register_powersave_bias_handler(unsigned int (*f) (struct cpufreq_policy *, unsigned int, unsigned int), unsigned int powersave_bias); diff --git a/drivers/cpufreq/cpufreq_ondemand.c b/drivers/cpufreq/cpufreq_ondemand.c index 300163430516..0c93cd9dee99 100644 --- a/drivers/cpufreq/cpufreq_ondemand.c +++ b/drivers/cpufreq/cpufreq_ondemand.c @@ -65,34 +65,32 @@ static unsigned int generic_powersave_bias_target(struct cpufreq_policy *policy, { unsigned int freq_req, freq_reduc, freq_avg; unsigned int freq_hi, freq_lo; - unsigned int index = 0; + unsigned int index; unsigned int delay_hi_us; struct policy_dbs_info *policy_dbs = policy->governor_data; struct od_policy_dbs_info *dbs_info = to_dbs_info(policy_dbs); struct dbs_data *dbs_data = policy_dbs->dbs_data; struct od_dbs_tuners *od_tuners = dbs_data->tuners; + struct cpufreq_frequency_table *freq_table = policy->freq_table; - if (!dbs_info->freq_table) { + if (!freq_table) { dbs_info->freq_lo = 0; dbs_info->freq_lo_delay_us = 0; return freq_next; } - cpufreq_frequency_table_target(policy, dbs_info->freq_table, freq_next, - relation, &index); - freq_req = dbs_info->freq_table[index].frequency; + index = cpufreq_frequency_table_target(policy, freq_next, relation); + freq_req = freq_table[index].frequency; freq_reduc = freq_req * od_tuners->powersave_bias / 1000; freq_avg = freq_req - freq_reduc; /* Find freq bounds for freq_avg in freq_table */ - index = 0; - cpufreq_frequency_table_target(policy, dbs_info->freq_table, freq_avg, - CPUFREQ_RELATION_H, &index); - freq_lo = dbs_info->freq_table[index].frequency; - index = 0; - cpufreq_frequency_table_target(policy, dbs_info->freq_table, freq_avg, - CPUFREQ_RELATION_L, &index); - freq_hi = dbs_info->freq_table[index].frequency; + index = cpufreq_frequency_table_target(policy, freq_avg, + CPUFREQ_RELATION_H); + freq_lo = freq_table[index].frequency; + index = cpufreq_frequency_table_target(policy, freq_avg, + CPUFREQ_RELATION_L); + freq_hi = freq_table[index].frequency; /* Find out how long we have to be in hi and lo freqs */ if (freq_hi == freq_lo) { @@ -113,7 +111,6 @@ static void ondemand_powersave_bias_init(struct cpufreq_policy *policy) { struct od_policy_dbs_info *dbs_info = to_dbs_info(policy->governor_data); - dbs_info->freq_table = cpufreq_frequency_get_table(policy->cpu); dbs_info->freq_lo = 0; } @@ -361,17 +358,15 @@ static void od_free(struct policy_dbs_info *policy_dbs) kfree(to_dbs_info(policy_dbs)); } -static int od_init(struct dbs_data *dbs_data, bool notify) +static int od_init(struct dbs_data *dbs_data) { struct od_dbs_tuners *tuners; u64 idle_time; int cpu; tuners = kzalloc(sizeof(*tuners), GFP_KERNEL); - if (!tuners) { - pr_err("%s: kzalloc failed\n", __func__); + if (!tuners) return -ENOMEM; - } cpu = get_cpu(); idle_time = get_cpu_idle_time_us(cpu, NULL); @@ -402,7 +397,7 @@ static int od_init(struct dbs_data *dbs_data, bool notify) return 0; } -static void od_exit(struct dbs_data *dbs_data, bool notify) +static void od_exit(struct dbs_data *dbs_data) { kfree(dbs_data->tuners); } @@ -420,12 +415,7 @@ static struct od_ops od_ops = { }; static struct dbs_governor od_dbs_gov = { - .gov = { - .name = "ondemand", - .governor = cpufreq_governor_dbs, - .max_transition_latency = TRANSITION_LATENCY_LIMIT, - .owner = THIS_MODULE, - }, + .gov = CPUFREQ_DBS_GOVERNOR_INITIALIZER("ondemand"), .kobj_type = { .default_attrs = od_attributes }, .gov_dbs_timer = od_dbs_timer, .alloc = od_alloc, diff --git a/drivers/cpufreq/cpufreq_ondemand.h b/drivers/cpufreq/cpufreq_ondemand.h index f0121db3cd9e..640ea4e97106 100644 --- a/drivers/cpufreq/cpufreq_ondemand.h +++ b/drivers/cpufreq/cpufreq_ondemand.h @@ -13,7 +13,6 @@ struct od_policy_dbs_info { struct policy_dbs_info policy_dbs; - struct cpufreq_frequency_table *freq_table; unsigned int freq_lo; unsigned int freq_lo_delay_us; unsigned int freq_hi_delay_us; diff --git a/drivers/cpufreq/cpufreq_performance.c b/drivers/cpufreq/cpufreq_performance.c index af9f4b96f5a8..dafb679adc58 100644 --- a/drivers/cpufreq/cpufreq_performance.c +++ b/drivers/cpufreq/cpufreq_performance.c @@ -16,27 +16,16 @@ #include <linux/init.h> #include <linux/module.h> -static int cpufreq_governor_performance(struct cpufreq_policy *policy, - unsigned int event) +static void cpufreq_gov_performance_limits(struct cpufreq_policy *policy) { - switch (event) { - case CPUFREQ_GOV_START: - case CPUFREQ_GOV_LIMITS: - pr_debug("setting to %u kHz because of event %u\n", - policy->max, event); - __cpufreq_driver_target(policy, policy->max, - CPUFREQ_RELATION_H); - break; - default: - break; - } - return 0; + pr_debug("setting to %u kHz\n", policy->max); + __cpufreq_driver_target(policy, policy->max, CPUFREQ_RELATION_H); } static struct cpufreq_governor cpufreq_gov_performance = { .name = "performance", - .governor = cpufreq_governor_performance, .owner = THIS_MODULE, + .limits = cpufreq_gov_performance_limits, }; static int __init cpufreq_gov_performance_init(void) diff --git a/drivers/cpufreq/cpufreq_powersave.c b/drivers/cpufreq/cpufreq_powersave.c index b8b400232a74..78a651038faf 100644 --- a/drivers/cpufreq/cpufreq_powersave.c +++ b/drivers/cpufreq/cpufreq_powersave.c @@ -16,26 +16,15 @@ #include <linux/init.h> #include <linux/module.h> -static int cpufreq_governor_powersave(struct cpufreq_policy *policy, - unsigned int event) +static void cpufreq_gov_powersave_limits(struct cpufreq_policy *policy) { - switch (event) { - case CPUFREQ_GOV_START: - case CPUFREQ_GOV_LIMITS: - pr_debug("setting to %u kHz because of event %u\n", - policy->min, event); - __cpufreq_driver_target(policy, policy->min, - CPUFREQ_RELATION_L); - break; - default: - break; - } - return 0; + pr_debug("setting to %u kHz\n", policy->min); + __cpufreq_driver_target(policy, policy->min, CPUFREQ_RELATION_L); } static struct cpufreq_governor cpufreq_gov_powersave = { .name = "powersave", - .governor = cpufreq_governor_powersave, + .limits = cpufreq_gov_powersave_limits, .owner = THIS_MODULE, }; diff --git a/drivers/cpufreq/cpufreq_stats.c b/drivers/cpufreq/cpufreq_stats.c index 5e370a30a964..06d3abdffd3a 100644 --- a/drivers/cpufreq/cpufreq_stats.c +++ b/drivers/cpufreq/cpufreq_stats.c @@ -15,7 +15,7 @@ #include <linux/slab.h&g |