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Message-Id: <fce918e3511ffbe508dd95d77e943b9e30b711ee.1375530162.git.viresh.kumar@linaro.org>
Date: Sat, 3 Aug 2013 17:19:21 +0530
From: Viresh Kumar <viresh.kumar@...aro.org>
To: rjw@...k.pl
Cc: linaro-kernel@...ts.linaro.org, patches@...aro.org,
cpufreq@...r.kernel.org, linux-pm@...r.kernel.org,
linux-kernel@...r.kernel.org, srivatsa.bhat@...ux.vnet.ibm.com,
l.majewski@...sung.com, Viresh Kumar <viresh.kumar@...aro.org>
Subject: [PATCH 03/10] cpufreq: Give consistent names for struct cpufreq_policy *
They are named as policy, cur_policy, new_policy, data, etc.. Just name them
poicy wherever possible.
Signed-off-by: Viresh Kumar <viresh.kumar@...aro.org>
---
drivers/cpufreq/cpufreq.c | 200 ++++++++++++++++++-------------------
drivers/cpufreq/cpufreq_governor.h | 2 +-
drivers/cpufreq/cpufreq_ondemand.c | 10 +-
drivers/cpufreq/cpufreq_stats.c | 14 +--
include/linux/cpufreq.h | 2 +-
5 files changed, 111 insertions(+), 117 deletions(-)
diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c
index 46e70ae..fd94923 100644
--- a/drivers/cpufreq/cpufreq.c
+++ b/drivers/cpufreq/cpufreq.c
@@ -178,7 +178,7 @@ EXPORT_SYMBOL_GPL(get_cpu_idle_time);
static struct cpufreq_policy *__cpufreq_cpu_get(unsigned int cpu, bool sysfs)
{
- struct cpufreq_policy *data;
+ struct cpufreq_policy *policy;
unsigned long flags;
if (cpu >= nr_cpu_ids)
@@ -194,16 +194,16 @@ static struct cpufreq_policy *__cpufreq_cpu_get(unsigned int cpu, bool sysfs)
goto err_out_unlock;
/* get the CPU */
- data = per_cpu(cpufreq_cpu_data, cpu);
+ policy = per_cpu(cpufreq_cpu_data, cpu);
- if (!data)
+ if (!policy)
goto err_out_put_module;
- if (!sysfs && !kobject_get(&data->kobj))
+ if (!sysfs && !kobject_get(&policy->kobj))
goto err_out_put_module;
read_unlock_irqrestore(&cpufreq_driver_lock, flags);
- return data;
+ return policy;
err_out_put_module:
module_put(cpufreq_driver->owner);
@@ -227,25 +227,25 @@ static struct cpufreq_policy *cpufreq_cpu_get_sysfs(unsigned int cpu)
return __cpufreq_cpu_get(cpu, true);
}
-static void __cpufreq_cpu_put(struct cpufreq_policy *data, bool sysfs)
+static void __cpufreq_cpu_put(struct cpufreq_policy *policy, bool sysfs)
{
if (!sysfs)
- kobject_put(&data->kobj);
+ kobject_put(&policy->kobj);
module_put(cpufreq_driver->owner);
}
-void cpufreq_cpu_put(struct cpufreq_policy *data)
+void cpufreq_cpu_put(struct cpufreq_policy *policy)
{
if (cpufreq_disabled())
return;
- __cpufreq_cpu_put(data, false);
+ __cpufreq_cpu_put(policy, false);
}
EXPORT_SYMBOL_GPL(cpufreq_cpu_put);
-static void cpufreq_cpu_put_sysfs(struct cpufreq_policy *data)
+static void cpufreq_cpu_put_sysfs(struct cpufreq_policy *policy)
{
- __cpufreq_cpu_put(data, true);
+ __cpufreq_cpu_put(policy, true);
}
/*********************************************************************
@@ -452,8 +452,8 @@ show_one(scaling_min_freq, min);
show_one(scaling_max_freq, max);
show_one(scaling_cur_freq, cur);
-static int __cpufreq_set_policy(struct cpufreq_policy *data,
- struct cpufreq_policy *policy);
+static int __cpufreq_set_policy(struct cpufreq_policy *policy,
+ struct cpufreq_policy *new_policy);
/**
* cpufreq_per_cpu_attr_write() / store_##file_name() - sysfs write access
@@ -1141,7 +1141,7 @@ static void update_policy_cpu(struct cpufreq_policy *policy, unsigned int cpu)
CPUFREQ_UPDATE_POLICY_CPU, policy);
}
-static int cpufreq_nominate_new_policy_cpu(struct cpufreq_policy *data,
+static int cpufreq_nominate_new_policy_cpu(struct cpufreq_policy *policy,
unsigned int old_cpu, bool frozen)
{
struct device *cpu_dev;
@@ -1149,27 +1149,27 @@ static int cpufreq_nominate_new_policy_cpu(struct cpufreq_policy *data,
int ret;
/* first sibling now owns the new sysfs dir */
- cpu_dev = get_cpu_device(cpumask_first(data->cpus));
+ cpu_dev = get_cpu_device(cpumask_first(policy->cpus));
/* Don't touch sysfs files during light-weight tear-down */
if (frozen)
return cpu_dev->id;
sysfs_remove_link(&cpu_dev->kobj, "cpufreq");
- ret = kobject_move(&data->kobj, &cpu_dev->kobj);
+ ret = kobject_move(&policy->kobj, &cpu_dev->kobj);
if (ret) {
pr_err("%s: Failed to move kobj: %d", __func__, ret);
WARN_ON(lock_policy_rwsem_write(old_cpu));
- cpumask_set_cpu(old_cpu, data->cpus);
+ cpumask_set_cpu(old_cpu, policy->cpus);
write_lock_irqsave(&cpufreq_driver_lock, flags);
- per_cpu(cpufreq_cpu_data, old_cpu) = data;
+ per_cpu(cpufreq_cpu_data, old_cpu) = policy;
write_unlock_irqrestore(&cpufreq_driver_lock, flags);
unlock_policy_rwsem_write(old_cpu);
- ret = sysfs_create_link(&cpu_dev->kobj, &data->kobj,
+ ret = sysfs_create_link(&cpu_dev->kobj, &policy->kobj,
"cpufreq");
return -EINVAL;
@@ -1191,7 +1191,7 @@ static int __cpufreq_remove_dev(struct device *dev,
unsigned int cpu = dev->id, cpus;
int new_cpu;
unsigned long flags;
- struct cpufreq_policy *data;
+ struct cpufreq_policy *policy;
struct kobject *kobj;
struct completion *cmp;
@@ -1199,44 +1199,44 @@ static int __cpufreq_remove_dev(struct device *dev,
write_lock_irqsave(&cpufreq_driver_lock, flags);
- data = per_cpu(cpufreq_cpu_data, cpu);
+ policy = per_cpu(cpufreq_cpu_data, cpu);
per_cpu(cpufreq_cpu_data, cpu) = NULL;
/* Save the policy somewhere when doing a light-weight tear-down */
if (frozen)
- per_cpu(cpufreq_cpu_data_fallback, cpu) = data;
+ per_cpu(cpufreq_cpu_data_fallback, cpu) = policy;
write_unlock_irqrestore(&cpufreq_driver_lock, flags);
- if (!data) {
+ if (!policy) {
pr_debug("%s: No cpu_data found\n", __func__);
return -EINVAL;
}
if (cpufreq_driver->target)
- __cpufreq_governor(data, CPUFREQ_GOV_STOP);
+ __cpufreq_governor(policy, CPUFREQ_GOV_STOP);
#ifdef CONFIG_HOTPLUG_CPU
if (!cpufreq_driver->setpolicy)
strncpy(per_cpu(cpufreq_cpu_governor, cpu),
- data->governor->name, CPUFREQ_NAME_LEN);
+ policy->governor->name, CPUFREQ_NAME_LEN);
#endif
WARN_ON(lock_policy_rwsem_write(cpu));
- cpus = cpumask_weight(data->cpus);
+ cpus = cpumask_weight(policy->cpus);
if (cpus > 1)
- cpumask_clear_cpu(cpu, data->cpus);
+ cpumask_clear_cpu(cpu, policy->cpus);
unlock_policy_rwsem_write(cpu);
- if (cpu != data->cpu && !frozen) {
+ if (cpu != policy->cpu && !frozen) {
sysfs_remove_link(&dev->kobj, "cpufreq");
} else if (cpus > 1) {
- new_cpu = cpufreq_nominate_new_policy_cpu(data, cpu, frozen);
+ new_cpu = cpufreq_nominate_new_policy_cpu(policy, cpu, frozen);
if (new_cpu >= 0) {
WARN_ON(lock_policy_rwsem_write(cpu));
- update_policy_cpu(data, new_cpu);
+ update_policy_cpu(policy, new_cpu);
unlock_policy_rwsem_write(cpu);
if (!frozen) {
@@ -1249,12 +1249,12 @@ static int __cpufreq_remove_dev(struct device *dev,
/* If cpu is last user of policy, free policy */
if (cpus == 1) {
if (cpufreq_driver->target)
- __cpufreq_governor(data, CPUFREQ_GOV_POLICY_EXIT);
+ __cpufreq_governor(policy, CPUFREQ_GOV_POLICY_EXIT);
if (!frozen) {
lock_policy_rwsem_read(cpu);
- kobj = &data->kobj;
- cmp = &data->kobj_unregister;
+ kobj = &policy->kobj;
+ cmp = &policy->kobj_unregister;
unlock_policy_rwsem_read(cpu);
kobject_put(kobj);
@@ -1274,14 +1274,14 @@ static int __cpufreq_remove_dev(struct device *dev,
* subsequent light-weight ->init() to succeed.
*/
if (cpufreq_driver->exit)
- cpufreq_driver->exit(data);
+ cpufreq_driver->exit(policy);
if (!frozen)
- cpufreq_policy_free(data);
+ cpufreq_policy_free(policy);
} else {
if (cpufreq_driver->target) {
- __cpufreq_governor(data, CPUFREQ_GOV_START);
- __cpufreq_governor(data, CPUFREQ_GOV_LIMITS);
+ __cpufreq_governor(policy, CPUFREQ_GOV_START);
+ __cpufreq_governor(policy, CPUFREQ_GOV_LIMITS);
}
}
@@ -1455,23 +1455,23 @@ static int cpufreq_bp_suspend(void)
int ret = 0;
int cpu = smp_processor_id();
- struct cpufreq_policy *cpu_policy;
+ struct cpufreq_policy *policy;
pr_debug("suspending cpu %u\n", cpu);
/* If there's no policy for the boot CPU, we have nothing to do. */
- cpu_policy = cpufreq_cpu_get(cpu);
- if (!cpu_policy)
+ policy = cpufreq_cpu_get(cpu);
+ if (!policy)
return 0;
if (cpufreq_driver->suspend) {
- ret = cpufreq_driver->suspend(cpu_policy);
+ ret = cpufreq_driver->suspend(policy);
if (ret)
printk(KERN_ERR "cpufreq: suspend failed in ->suspend "
- "step on CPU %u\n", cpu_policy->cpu);
+ "step on CPU %u\n", policy->cpu);
}
- cpufreq_cpu_put(cpu_policy);
+ cpufreq_cpu_put(policy);
return ret;
}
@@ -1493,28 +1493,28 @@ static void cpufreq_bp_resume(void)
int ret = 0;
int cpu = smp_processor_id();
- struct cpufreq_policy *cpu_policy;
+ struct cpufreq_policy *policy;
pr_debug("resuming cpu %u\n", cpu);
/* If there's no policy for the boot CPU, we have nothing to do. */
- cpu_policy = cpufreq_cpu_get(cpu);
- if (!cpu_policy)
+ policy = cpufreq_cpu_get(cpu);
+ if (!policy)
return;
if (cpufreq_driver->resume) {
- ret = cpufreq_driver->resume(cpu_policy);
+ ret = cpufreq_driver->resume(policy);
if (ret) {
printk(KERN_ERR "cpufreq: resume failed in ->resume "
- "step on CPU %u\n", cpu_policy->cpu);
+ "step on CPU %u\n", policy->cpu);
goto fail;
}
}
- schedule_work(&cpu_policy->update);
+ schedule_work(&policy->update);
fail:
- cpufreq_cpu_put(cpu_policy);
+ cpufreq_cpu_put(policy);
}
static struct syscore_ops cpufreq_syscore_ops = {
@@ -1834,95 +1834,95 @@ EXPORT_SYMBOL(cpufreq_get_policy);
* data : current policy.
* policy : policy to be set.
*/
-static int __cpufreq_set_policy(struct cpufreq_policy *data,
- struct cpufreq_policy *policy)
+static int __cpufreq_set_policy(struct cpufreq_policy *policy,
+ struct cpufreq_policy *new_policy)
{
int ret = 0, failed = 1;
- pr_debug("setting new policy for CPU %u: %u - %u kHz\n", policy->cpu,
- policy->min, policy->max);
+ pr_debug("setting new policy for CPU %u: %u - %u kHz\n", new_policy->cpu,
+ new_policy->min, new_policy->max);
- memcpy(&policy->cpuinfo, &data->cpuinfo,
+ memcpy(&new_policy->cpuinfo, &policy->cpuinfo,
sizeof(struct cpufreq_cpuinfo));
- if (policy->min > data->max || policy->max < data->min) {
+ if (new_policy->min > policy->max || new_policy->max < policy->min) {
ret = -EINVAL;
goto error_out;
}
/* verify the cpu speed can be set within this limit */
- ret = cpufreq_driver->verify(policy);
+ ret = cpufreq_driver->verify(new_policy);
if (ret)
goto error_out;
/* adjust if necessary - all reasons */
blocking_notifier_call_chain(&cpufreq_policy_notifier_list,
- CPUFREQ_ADJUST, policy);
+ CPUFREQ_ADJUST, new_policy);
/* adjust if necessary - hardware incompatibility*/
blocking_notifier_call_chain(&cpufreq_policy_notifier_list,
- CPUFREQ_INCOMPATIBLE, policy);
+ CPUFREQ_INCOMPATIBLE, new_policy);
/*
* verify the cpu speed can be set within this limit, which might be
* different to the first one
*/
- ret = cpufreq_driver->verify(policy);
+ ret = cpufreq_driver->verify(new_policy);
if (ret)
goto error_out;
/* notification of the new policy */
blocking_notifier_call_chain(&cpufreq_policy_notifier_list,
- CPUFREQ_NOTIFY, policy);
+ CPUFREQ_NOTIFY, new_policy);
- data->min = policy->min;
- data->max = policy->max;
+ policy->min = new_policy->min;
+ policy->max = new_policy->max;
pr_debug("new min and max freqs are %u - %u kHz\n",
- data->min, data->max);
+ policy->min, policy->max);
if (cpufreq_driver->setpolicy) {
- data->policy = policy->policy;
+ policy->policy = new_policy->policy;
pr_debug("setting range\n");
- ret = cpufreq_driver->setpolicy(policy);
+ ret = cpufreq_driver->setpolicy(new_policy);
} else {
- if (policy->governor != data->governor) {
+ if (new_policy->governor != policy->governor) {
/* save old, working values */
- struct cpufreq_governor *old_gov = data->governor;
+ struct cpufreq_governor *old_gov = policy->governor;
pr_debug("governor switch\n");
/* end old governor */
- if (data->governor) {
- __cpufreq_governor(data, CPUFREQ_GOV_STOP);
- unlock_policy_rwsem_write(policy->cpu);
- __cpufreq_governor(data,
+ if (policy->governor) {
+ __cpufreq_governor(policy, CPUFREQ_GOV_STOP);
+ unlock_policy_rwsem_write(new_policy->cpu);
+ __cpufreq_governor(policy,
CPUFREQ_GOV_POLICY_EXIT);
- lock_policy_rwsem_write(policy->cpu);
+ lock_policy_rwsem_write(new_policy->cpu);
}
/* start new governor */
- data->governor = policy->governor;
- if (!__cpufreq_governor(data, CPUFREQ_GOV_POLICY_INIT)) {
- if (!__cpufreq_governor(data, CPUFREQ_GOV_START)) {
+ policy->governor = new_policy->governor;
+ if (!__cpufreq_governor(policy, CPUFREQ_GOV_POLICY_INIT)) {
+ if (!__cpufreq_governor(policy, CPUFREQ_GOV_START)) {
failed = 0;
} else {
- unlock_policy_rwsem_write(policy->cpu);
- __cpufreq_governor(data,
+ unlock_policy_rwsem_write(new_policy->cpu);
+ __cpufreq_governor(policy,
CPUFREQ_GOV_POLICY_EXIT);
- lock_policy_rwsem_write(policy->cpu);
+ lock_policy_rwsem_write(new_policy->cpu);
}
}
if (failed) {
/* new governor failed, so re-start old one */
pr_debug("starting governor %s failed\n",
- data->governor->name);
+ policy->governor->name);
if (old_gov) {
- data->governor = old_gov;
- __cpufreq_governor(data,
+ policy->governor = old_gov;
+ __cpufreq_governor(policy,
CPUFREQ_GOV_POLICY_INIT);
- __cpufreq_governor(data,
+ __cpufreq_governor(policy,
CPUFREQ_GOV_START);
}
ret = -EINVAL;
@@ -1931,7 +1931,7 @@ static int __cpufreq_set_policy(struct cpufreq_policy *data,
/* might be a policy change, too, so fall through */
}
pr_debug("governor: change or update limits\n");
- __cpufreq_governor(data, CPUFREQ_GOV_LIMITS);
+ __cpufreq_governor(policy, CPUFREQ_GOV_LIMITS);
}
error_out:
@@ -1947,11 +1947,11 @@ error_out:
*/
int cpufreq_update_policy(unsigned int cpu)
{
- struct cpufreq_policy *data = cpufreq_cpu_get(cpu);
- struct cpufreq_policy policy;
+ struct cpufreq_policy *policy = cpufreq_cpu_get(cpu);
+ struct cpufreq_policy new_policy;
int ret;
- if (!data) {
+ if (!policy) {
ret = -ENODEV;
goto no_policy;
}
@@ -1962,34 +1962,34 @@ int cpufreq_update_policy(unsigned int cpu)
}
pr_debug("updating policy for CPU %u\n", cpu);
- memcpy(&policy, data, sizeof(struct cpufreq_policy));
- policy.min = data->user_policy.min;
- policy.max = data->user_policy.max;
- policy.policy = data->user_policy.policy;
- policy.governor = data->user_policy.governor;
+ memcpy(&new_policy, policy, sizeof(struct cpufreq_policy));
+ new_policy.min = policy->user_policy.min;
+ new_policy.max = policy->user_policy.max;
+ new_policy.policy = policy->user_policy.policy;
+ new_policy.governor = policy->user_policy.governor;
/*
* BIOS might change freq behind our back
* -> ask driver for current freq and notify governors about a change
*/
if (cpufreq_driver->get) {
- policy.cur = cpufreq_driver->get(cpu);
- if (!data->cur) {
+ new_policy.cur = cpufreq_driver->get(cpu);
+ if (!policy->cur) {
pr_debug("Driver did not initialize current freq");
- data->cur = policy.cur;
+ policy->cur = new_policy.cur;
} else {
- if (data->cur != policy.cur && cpufreq_driver->target)
- cpufreq_out_of_sync(cpu, data->cur,
- policy.cur);
+ if (policy->cur != new_policy.cur && cpufreq_driver->target)
+ cpufreq_out_of_sync(cpu, policy->cur,
+ new_policy.cur);
}
}
- ret = __cpufreq_set_policy(data, &policy);
+ ret = __cpufreq_set_policy(policy, &new_policy);
unlock_policy_rwsem_write(cpu);
fail:
- cpufreq_cpu_put(data);
+ cpufreq_cpu_put(policy);
no_policy:
return ret;
}
diff --git a/drivers/cpufreq/cpufreq_governor.h b/drivers/cpufreq/cpufreq_governor.h
index cf0b7a4..264e509 100644
--- a/drivers/cpufreq/cpufreq_governor.h
+++ b/drivers/cpufreq/cpufreq_governor.h
@@ -221,7 +221,7 @@ struct od_ops {
void (*powersave_bias_init_cpu)(int cpu);
unsigned int (*powersave_bias_target)(struct cpufreq_policy *policy,
unsigned int freq_next, unsigned int relation);
- void (*freq_increase)(struct cpufreq_policy *p, unsigned int freq);
+ void (*freq_increase)(struct cpufreq_policy *policy, unsigned int freq);
};
struct cs_ops {
diff --git a/drivers/cpufreq/cpufreq_ondemand.c b/drivers/cpufreq/cpufreq_ondemand.c
index 27c732e..47d4b69b 100644
--- a/drivers/cpufreq/cpufreq_ondemand.c
+++ b/drivers/cpufreq/cpufreq_ondemand.c
@@ -132,18 +132,18 @@ static void ondemand_powersave_bias_init(void)
}
}
-static void dbs_freq_increase(struct cpufreq_policy *p, unsigned int freq)
+static void dbs_freq_increase(struct cpufreq_policy *policy, unsigned int freq)
{
- struct dbs_data *dbs_data = p->governor_data;
+ struct dbs_data *dbs_data = policy->governor_data;
struct od_dbs_tuners *od_tuners = dbs_data->tuners;
if (od_tuners->powersave_bias)
- freq = od_ops.powersave_bias_target(p, freq,
+ freq = od_ops.powersave_bias_target(policy, freq,
CPUFREQ_RELATION_H);
- else if (p->cur == p->max)
+ else if (policy->cur == policy->max)
return;
- __cpufreq_driver_target(p, freq, od_tuners->powersave_bias ?
+ __cpufreq_driver_target(policy, freq, od_tuners->powersave_bias ?
CPUFREQ_RELATION_L : CPUFREQ_RELATION_H);
}
diff --git a/drivers/cpufreq/cpufreq_stats.c b/drivers/cpufreq/cpufreq_stats.c
index a7143b0..b6019b8 100644
--- a/drivers/cpufreq/cpufreq_stats.c
+++ b/drivers/cpufreq/cpufreq_stats.c
@@ -193,7 +193,6 @@ static int cpufreq_stats_create_table(struct cpufreq_policy *policy,
{
unsigned int i, j, count = 0, ret = 0;
struct cpufreq_stats *stat;
- struct cpufreq_policy *data;
unsigned int alloc_size;
unsigned int cpu = policy->cpu;
if (per_cpu(cpufreq_stats_table, cpu))
@@ -202,13 +201,9 @@ static int cpufreq_stats_create_table(struct cpufreq_policy *policy,
if ((stat) == NULL)
return -ENOMEM;
- data = cpufreq_cpu_get(cpu);
- if (data == NULL) {
- ret = -EINVAL;
- goto error_get_fail;
- }
+ cpufreq_cpu_get(cpu);
- ret = sysfs_create_group(&data->kobj, &stats_attr_group);
+ ret = sysfs_create_group(&policy->kobj, &stats_attr_group);
if (ret)
goto error_out;
@@ -251,11 +246,10 @@ static int cpufreq_stats_create_table(struct cpufreq_policy *policy,
stat->last_time = get_jiffies_64();
stat->last_index = freq_table_get_index(stat, policy->cur);
spin_unlock(&cpufreq_stats_lock);
- cpufreq_cpu_put(data);
+ cpufreq_cpu_put(policy);
return 0;
error_out:
- cpufreq_cpu_put(data);
-error_get_fail:
+ cpufreq_cpu_put(policy);
kfree(stat);
per_cpu(cpufreq_stats_table, cpu) = NULL;
return ret;
diff --git a/include/linux/cpufreq.h b/include/linux/cpufreq.h
index 611b164..9876712 100644
--- a/include/linux/cpufreq.h
+++ b/include/linux/cpufreq.h
@@ -94,7 +94,7 @@ struct cpufreq_policy {
#define CPUFREQ_SHARED_TYPE_ANY (3) /* Freq can be set from any dependent CPU*/
struct cpufreq_policy *cpufreq_cpu_get(unsigned int cpu);
-void cpufreq_cpu_put(struct cpufreq_policy *data);
+void cpufreq_cpu_put(struct cpufreq_policy *policy);
static inline bool policy_is_shared(struct cpufreq_policy *policy)
{
--
1.7.12.rc2.18.g61b472e
--
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