/* internal prototypes */
-static int __cpufreq_governor(struct cpufreq_policy *policy, unsigned int event);
+static int __cpufreq_governor(struct cpufreq_policy *policy,
+ unsigned int event);
static unsigned int __cpufreq_get(unsigned int cpu);
static void handle_update(struct work_struct *work);
pure_initcall(init_cpufreq_transition_notifier_list);
static LIST_HEAD(cpufreq_governor_list);
-static DEFINE_MUTEX (cpufreq_governor_mutex);
+static DEFINE_MUTEX(cpufreq_governor_mutex);
struct cpufreq_policy *cpufreq_cpu_get(unsigned int cpu)
{
struct cpufreq_governor *t;
list_for_each_entry(t, &cpufreq_governor_list, governor_list)
- if (!strnicmp(str_governor,t->name,CPUFREQ_NAME_LEN))
+ if (!strnicmp(str_governor, t->name, CPUFREQ_NAME_LEN))
return t;
return NULL;
mutex_unlock(&cpufreq_governor_mutex);
}
- out:
+out:
return err;
}
-/* drivers/base/cpu.c */
-extern struct sysdev_class cpu_sysdev_class;
-
-
/**
* cpufreq_per_cpu_attr_read() / show_##file_name() -
* print out cpufreq information
static ssize_t show_##file_name \
(struct cpufreq_policy *policy, char *buf) \
{ \
- return sprintf (buf, "%u\n", policy->object); \
+ return sprintf(buf, "%u\n", policy->object); \
}
show_one(cpuinfo_min_freq, cpuinfo.min_freq);
if (ret) \
return -EINVAL; \
\
- ret = sscanf (buf, "%u", &new_policy.object); \
+ ret = sscanf(buf, "%u", &new_policy.object); \
if (ret != 1) \
return -EINVAL; \
\
return ret ? ret : count; \
}
-store_one(scaling_min_freq,min);
-store_one(scaling_max_freq,max);
+store_one(scaling_min_freq, min);
+store_one(scaling_max_freq, max);
/**
* show_cpuinfo_cur_freq - current CPU frequency as detected by hardware
*/
static ssize_t show_scaling_governor(struct cpufreq_policy *policy, char *buf)
{
- if(policy->policy == CPUFREQ_POLICY_POWERSAVE)
+ if (policy->policy == CPUFREQ_POLICY_POWERSAVE)
return sprintf(buf, "powersave\n");
else if (policy->policy == CPUFREQ_POLICY_PERFORMANCE)
return sprintf(buf, "performance\n");
else if (policy->governor)
- return scnprintf(buf, CPUFREQ_NAME_LEN, "%s\n", policy->governor->name);
+ return scnprintf(buf, CPUFREQ_NAME_LEN, "%s\n",
+ policy->governor->name);
return -EINVAL;
}
if (ret)
return ret;
- ret = sscanf (buf, "%15s", str_governor);
+ ret = sscanf(buf, "%15s", str_governor);
if (ret != 1)
return -EINVAL;
}
list_for_each_entry(t, &cpufreq_governor_list, governor_list) {
- if (i >= (ssize_t) ((PAGE_SIZE / sizeof(char)) - (CPUFREQ_NAME_LEN + 2)))
+ if (i >= (ssize_t) ((PAGE_SIZE / sizeof(char))
+ - (CPUFREQ_NAME_LEN + 2)))
goto out;
i += scnprintf(&buf[i], CPUFREQ_NAME_LEN, "%s ", t->name);
}
return i;
}
-static ssize_t show_cpus(cpumask_t mask, char *buf)
+static ssize_t show_cpus(const struct cpumask *mask, char *buf)
{
ssize_t i = 0;
unsigned int cpu;
- for_each_cpu_mask_nr(cpu, mask) {
+ for_each_cpu(cpu, mask) {
if (i)
i += scnprintf(&buf[i], (PAGE_SIZE - i - 2), " ");
i += scnprintf(&buf[i], (PAGE_SIZE - i - 2), "%u", cpu);
if (i >= (PAGE_SIZE - 5))
- break;
+ break;
}
i += sprintf(&buf[i], "\n");
return i;
*/
static ssize_t show_related_cpus(struct cpufreq_policy *policy, char *buf)
{
- if (cpus_empty(policy->related_cpus))
+ if (cpumask_empty(policy->related_cpus))
return show_cpus(policy->cpus, buf);
return show_cpus(policy->related_cpus, buf);
}
NULL
};
-#define to_policy(k) container_of(k,struct cpufreq_policy,kobj)
-#define to_attr(a) container_of(a,struct freq_attr,attr)
+#define to_policy(k) container_of(k, struct cpufreq_policy, kobj)
+#define to_attr(a) container_of(a, struct freq_attr, attr)
-static ssize_t show(struct kobject *kobj, struct attribute *attr ,char *buf)
+static ssize_t show(struct kobject *kobj, struct attribute *attr, char *buf)
{
struct cpufreq_policy *policy = to_policy(kobj);
struct freq_attr *fattr = to_attr(attr);
.release = cpufreq_sysfs_release,
};
+static struct kobj_type ktype_empty_cpufreq = {
+ .sysfs_ops = &sysfs_ops,
+ .release = cpufreq_sysfs_release,
+};
+
/**
* cpufreq_add_dev - add a CPU device
ret = -ENOMEM;
goto nomem_out;
}
+ if (!alloc_cpumask_var(&policy->cpus, GFP_KERNEL)) {
+ kfree(policy);
+ ret = -ENOMEM;
+ goto nomem_out;
+ }
+ if (!alloc_cpumask_var(&policy->related_cpus, GFP_KERNEL)) {
+ free_cpumask_var(policy->cpus);
+ kfree(policy);
+ ret = -ENOMEM;
+ goto nomem_out;
+ }
policy->cpu = cpu;
- policy->cpus = cpumask_of_cpu(cpu);
+ cpumask_copy(policy->cpus, cpumask_of(cpu));
/* Initially set CPU itself as the policy_cpu */
per_cpu(policy_cpu, cpu) = cpu;
dprintk("initialization failed\n");
goto err_out;
}
- policy->user_policy.min = policy->cpuinfo.min_freq;
- policy->user_policy.max = policy->cpuinfo.max_freq;
+ policy->user_policy.min = policy->min;
+ policy->user_policy.max = policy->max;
blocking_notifier_call_chain(&cpufreq_policy_notifier_list,
CPUFREQ_START, policy);
}
#endif
- for_each_cpu_mask_nr(j, policy->cpus) {
+ for_each_cpu(j, policy->cpus) {
if (cpu == j)
continue;
- /* check for existing affected CPUs. They may not be aware
- * of it due to CPU Hotplug.
+ /* Check for existing affected CPUs.
+ * They may not be aware of it due to CPU Hotplug.
*/
- managed_policy = cpufreq_cpu_get(j); // FIXME: Where is this released? What about error paths?
+ managed_policy = cpufreq_cpu_get(j); /* FIXME: Where is this released? What about error paths? */
if (unlikely(managed_policy)) {
/* Set proper policy_cpu */
goto err_out_driver_exit;
spin_lock_irqsave(&cpufreq_driver_lock, flags);
- managed_policy->cpus = policy->cpus;
+ cpumask_copy(managed_policy->cpus, policy->cpus);
per_cpu(cpufreq_cpu_data, cpu) = managed_policy;
spin_unlock_irqrestore(&cpufreq_driver_lock, flags);
memcpy(&new_policy, policy, sizeof(struct cpufreq_policy));
/* prepare interface data */
- ret = kobject_init_and_add(&policy->kobj, &ktype_cpufreq, &sys_dev->kobj,
- "cpufreq");
- if (ret)
- goto err_out_driver_exit;
-
- /* set up files for this cpu device */
- drv_attr = cpufreq_driver->attr;
- while ((drv_attr) && (*drv_attr)) {
- ret = sysfs_create_file(&policy->kobj, &((*drv_attr)->attr));
+ if (!cpufreq_driver->hide_interface) {
+ ret = kobject_init_and_add(&policy->kobj, &ktype_cpufreq,
+ &sys_dev->kobj, "cpufreq");
if (ret)
goto err_out_driver_exit;
- drv_attr++;
- }
- if (cpufreq_driver->get) {
- ret = sysfs_create_file(&policy->kobj, &cpuinfo_cur_freq.attr);
- if (ret)
- goto err_out_driver_exit;
- }
- if (cpufreq_driver->target) {
- ret = sysfs_create_file(&policy->kobj, &scaling_cur_freq.attr);
+
+ /* set up files for this cpu device */
+ drv_attr = cpufreq_driver->attr;
+ while ((drv_attr) && (*drv_attr)) {
+ ret = sysfs_create_file(&policy->kobj,
+ &((*drv_attr)->attr));
+ if (ret)
+ goto err_out_driver_exit;
+ drv_attr++;
+ }
+ if (cpufreq_driver->get) {
+ ret = sysfs_create_file(&policy->kobj,
+ &cpuinfo_cur_freq.attr);
+ if (ret)
+ goto err_out_driver_exit;
+ }
+ if (cpufreq_driver->target) {
+ ret = sysfs_create_file(&policy->kobj,
+ &scaling_cur_freq.attr);
+ if (ret)
+ goto err_out_driver_exit;
+ }
+ } else {
+ ret = kobject_init_and_add(&policy->kobj, &ktype_empty_cpufreq,
+ &sys_dev->kobj, "cpufreq");
if (ret)
goto err_out_driver_exit;
}
spin_lock_irqsave(&cpufreq_driver_lock, flags);
- for_each_cpu_mask_nr(j, policy->cpus) {
+ for_each_cpu(j, policy->cpus) {
per_cpu(cpufreq_cpu_data, j) = policy;
per_cpu(policy_cpu, j) = policy->cpu;
}
spin_unlock_irqrestore(&cpufreq_driver_lock, flags);
/* symlink affected CPUs */
- for_each_cpu_mask_nr(j, policy->cpus) {
+ for_each_cpu(j, policy->cpus) {
if (j == cpu)
continue;
if (!cpu_online(j))
err_out_unregister:
spin_lock_irqsave(&cpufreq_driver_lock, flags);
- for_each_cpu_mask_nr(j, policy->cpus)
+ for_each_cpu(j, policy->cpus)
per_cpu(cpufreq_cpu_data, j) = NULL;
spin_unlock_irqrestore(&cpufreq_driver_lock, flags);
*/
if (unlikely(cpu != data->cpu)) {
dprintk("removing link\n");
- cpu_clear(cpu, data->cpus);
+ cpumask_clear_cpu(cpu, data->cpus);
spin_unlock_irqrestore(&cpufreq_driver_lock, flags);
sysfs_remove_link(&sys_dev->kobj, "cpufreq");
cpufreq_cpu_put(data);
* per_cpu(cpufreq_cpu_data) while holding the lock, and remove
* the sysfs links afterwards.
*/
- if (unlikely(cpus_weight(data->cpus) > 1)) {
- for_each_cpu_mask_nr(j, data->cpus) {
+ if (unlikely(cpumask_weight(data->cpus) > 1)) {
+ for_each_cpu(j, data->cpus) {
if (j == cpu)
continue;
per_cpu(cpufreq_cpu_data, j) = NULL;
spin_unlock_irqrestore(&cpufreq_driver_lock, flags);
- if (unlikely(cpus_weight(data->cpus) > 1)) {
- for_each_cpu_mask_nr(j, data->cpus) {
+ if (unlikely(cpumask_weight(data->cpus) > 1)) {
+ for_each_cpu(j, data->cpus) {
if (j == cpu)
continue;
dprintk("removing link for cpu %u\n", j);
if (cpufreq_driver->exit)
cpufreq_driver->exit(data);
+ free_cpumask_var(data->related_cpus);
+ free_cpumask_var(data->cpus);
kfree(data);
+ per_cpu(cpufreq_cpu_data, cpu) = NULL;
cpufreq_debug_enable_ratelimit();
return 0;
* @old_freq: CPU frequency the kernel thinks the CPU runs at
* @new_freq: CPU frequency the CPU actually runs at
*
- * We adjust to current frequency first, and need to clean up later. So either call
- * to cpufreq_update_policy() or schedule handle_update()).
+ * We adjust to current frequency first, and need to clean up later.
+ * So either call to cpufreq_update_policy() or schedule handle_update()).
*/
static void cpufreq_out_of_sync(unsigned int cpu, unsigned int old_freq,
unsigned int new_freq)
/**
* cpufreq_get_policy - get the current cpufreq_policy
- * @policy: struct cpufreq_policy into which the current cpufreq_policy is written
+ * @policy: struct cpufreq_policy into which the current cpufreq_policy
+ * is written
*
* Reads the current cpufreq policy.
*/
git.openpandora.org / pandora-kernel.git / blobdiff