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[CPUFREQ] Remove deprecated /proc/acpi/processor/performance write support 

Remove deprecated /proc/acpi/processor/performance write support

Writing to /proc/acpi/processor/xy/performance interferes with sysfs
cpufreq interface. Also removes buggy cpufreq_set_policy exported symbol.

Signed-off-by: Thomas Renninger <trenn@suse.de>
Signed-off-by: Dave Jones <davej@redhat.com>
hifive-unleashed-5.1
Thomas Renninger 2007-04-19 15:49:09 +02:00 committed by Dave Jones
parent 22c970f346
commit 632786ce9f
3 changed files with 1 additions and 83 deletions
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46
drivers/acpi/processor_perflib.c
View File

@ -433,49 +433,6 @@ static int acpi_processor_perf_open_fs(struct inode *inode, struct file *file)
PDE(inode)->data);
}
static ssize_t
acpi_processor_write_performance(struct file *file,
const char __user * buffer,
size_t count, loff_t * data)
{
int result = 0;
struct seq_file *m = file->private_data;
struct acpi_processor *pr = m->private;
struct acpi_processor_performance *perf;
char state_string[12] = { '\0' };
unsigned int new_state = 0;
struct cpufreq_policy policy;
if (!pr || (count > sizeof(state_string) - 1))
return -EINVAL;
perf = pr->performance;
if (!perf)
return -EINVAL;
if (copy_from_user(state_string, buffer, count))
return -EFAULT;
state_string[count] = '\0';
new_state = simple_strtoul(state_string, NULL, 0);
if (new_state >= perf->state_count)
return -EINVAL;
cpufreq_get_policy(&policy, pr->id);
policy.cpu = pr->id;
policy.min = perf->states[new_state].core_frequency * 1000;
policy.max = perf->states[new_state].core_frequency * 1000;
result = cpufreq_set_policy(&policy);
if (result)
return result;
return count;
}
static void acpi_cpufreq_add_file(struct acpi_processor *pr)
{
struct proc_dir_entry *entry = NULL;
@ -487,10 +444,9 @@ static void acpi_cpufreq_add_file(struct acpi_processor *pr)
/* add file 'performance' [R/W] */
entry = create_proc_entry(ACPI_PROCESSOR_FILE_PERFORMANCE,
S_IFREG | S_IRUGO | S_IWUSR,
S_IFREG | S_IRUGO,
acpi_device_dir(device));
if (entry){
acpi_processor_perf_fops.write = acpi_processor_write_performance;
entry->proc_fops = &acpi_processor_perf_fops;
entry->data = acpi_driver_data(device);
entry->owner = THIS_MODULE;

37
drivers/cpufreq/cpufreq.c
View File

@ -1625,43 +1625,6 @@ error_out:
return ret;
}
/**
* cpufreq_set_policy - set a new CPUFreq policy
* @policy: policy to be set.
*
* Sets a new CPU frequency and voltage scaling policy.
*/
int cpufreq_set_policy(struct cpufreq_policy *policy)
{
int ret = 0;
struct cpufreq_policy *data;
if (!policy)
return -EINVAL;
data = cpufreq_cpu_get(policy->cpu);
if (!data)
return -EINVAL;
if (unlikely(lock_policy_rwsem_write(policy->cpu)))
return -EINVAL;
ret = __cpufreq_set_policy(data, policy);
data->user_policy.min = data->min;
data->user_policy.max = data->max;
data->user_policy.policy = data->policy;
data->user_policy.governor = data->governor;
unlock_policy_rwsem_write(policy->cpu);
cpufreq_cpu_put(data);
return ret;
}
EXPORT_SYMBOL(cpufreq_set_policy);
/**
* cpufreq_update_policy - re-evaluate an existing cpufreq policy
* @cpu: CPU which shall be re-evaluated

1
include/linux/cpufreq.h
View File

@ -257,7 +257,6 @@ struct freq_attr {
/*********************************************************************
* CPUFREQ 2.6. INTERFACE *
*********************************************************************/
int cpufreq_set_policy(struct cpufreq_policy *policy);
int cpufreq_get_policy(struct cpufreq_policy *policy, unsigned int cpu);
int cpufreq_update_policy(unsigned int cpu);