#include <acpi/processor.h>
#include <acpi/acpi_drivers.h>
-#define ACPI_PROCESSOR_COMPONENT 0x01000000
#define ACPI_PROCESSOR_CLASS "processor"
#define _COMPONENT ACPI_PROCESSOR_COMPONENT
ACPI_MODULE_NAME("processor_thermal");
#define CPUFREQ_THERMAL_MIN_STEP 0
#define CPUFREQ_THERMAL_MAX_STEP 3
-static unsigned int cpufreq_thermal_reduction_pctg[NR_CPUS];
+static DEFINE_PER_CPU(unsigned int, cpufreq_thermal_reduction_pctg);
static unsigned int acpi_thermal_cpufreq_is_init = 0;
static int cpu_has_cpufreq(unsigned int cpu)
if (!cpu_has_cpufreq(cpu))
return -ENODEV;
- if (cpufreq_thermal_reduction_pctg[cpu] <
+ if (per_cpu(cpufreq_thermal_reduction_pctg, cpu) <
CPUFREQ_THERMAL_MAX_STEP) {
- cpufreq_thermal_reduction_pctg[cpu]++;
+ per_cpu(cpufreq_thermal_reduction_pctg, cpu)++;
cpufreq_update_policy(cpu);
return 0;
}
if (!cpu_has_cpufreq(cpu))
return -ENODEV;
- if (cpufreq_thermal_reduction_pctg[cpu] >
+ if (per_cpu(cpufreq_thermal_reduction_pctg, cpu) >
(CPUFREQ_THERMAL_MIN_STEP + 1))
- cpufreq_thermal_reduction_pctg[cpu]--;
+ per_cpu(cpufreq_thermal_reduction_pctg, cpu)--;
else
- cpufreq_thermal_reduction_pctg[cpu] = 0;
+ per_cpu(cpufreq_thermal_reduction_pctg, cpu) = 0;
cpufreq_update_policy(cpu);
/* We reached max freq again and can leave passive mode */
- return !cpufreq_thermal_reduction_pctg[cpu];
+ return !per_cpu(cpufreq_thermal_reduction_pctg, cpu);
}
static int acpi_thermal_cpufreq_notifier(struct notifier_block *nb,
if (event != CPUFREQ_ADJUST)
goto out;
- max_freq =
- (policy->cpuinfo.max_freq *
- (100 - cpufreq_thermal_reduction_pctg[policy->cpu] * 20)) / 100;
+ max_freq = (
+ policy->cpuinfo.max_freq *
+ (100 - per_cpu(cpufreq_thermal_reduction_pctg, policy->cpu) * 20)
+ ) / 100;
cpufreq_verify_within_limits(policy, 0, max_freq);
if (!cpu_has_cpufreq(cpu))
return 0;
- return cpufreq_thermal_reduction_pctg[cpu];
+ return per_cpu(cpufreq_thermal_reduction_pctg, cpu);
}
static int cpufreq_set_cur_state(unsigned int cpu, int state)
if (!cpu_has_cpufreq(cpu))
return 0;
- cpufreq_thermal_reduction_pctg[cpu] = state;
+ per_cpu(cpufreq_thermal_reduction_pctg, cpu) = state;
cpufreq_update_policy(cpu);
return 0;
}
{
int i;
- for (i = 0; i < NR_CPUS; i++)
- cpufreq_thermal_reduction_pctg[i] = 0;
+ for (i = 0; i < nr_cpu_ids; i++)
+ if (cpu_present(i))
+ per_cpu(cpufreq_thermal_reduction_pctg, i) = 0;
i = cpufreq_register_notifier(&acpi_thermal_cpufreq_notifier_block,
CPUFREQ_POLICY_NOTIFIER);
return max_state;
}
static int
-processor_get_max_state(struct thermal_cooling_device *cdev, char *buf)
+processor_get_max_state(struct thermal_cooling_device *cdev,
+ unsigned long *state)
{
struct acpi_device *device = cdev->devdata;
struct acpi_processor *pr = acpi_driver_data(device);
if (!device || !pr)
return -EINVAL;
- return sprintf(buf, "%d\n", acpi_processor_max_state(pr));
+ *state = acpi_processor_max_state(pr);
+ return 0;
}
static int
-processor_get_cur_state(struct thermal_cooling_device *cdev, char *buf)
+processor_get_cur_state(struct thermal_cooling_device *cdev,
+ unsigned long *cur_state)
{
struct acpi_device *device = cdev->devdata;
struct acpi_processor *pr = acpi_driver_data(device);
- int cur_state;
if (!device || !pr)
return -EINVAL;
- cur_state = cpufreq_get_cur_state(pr->id);
+ *cur_state = cpufreq_get_cur_state(pr->id);
if (pr->flags.throttling)
- cur_state += pr->throttling.state;
-
- return sprintf(buf, "%d\n", cur_state);
+ *cur_state += pr->throttling.state;
+ return 0;
}
static int
-processor_set_cur_state(struct thermal_cooling_device *cdev, unsigned int state)
+processor_set_cur_state(struct thermal_cooling_device *cdev,
+ unsigned long state)
{
struct acpi_device *device = cdev->devdata;
struct acpi_processor *pr = acpi_driver_data(device);
return count;
}
-struct file_operations acpi_processor_limit_fops = {
+const struct file_operations acpi_processor_limit_fops = {
+ .owner = THIS_MODULE,
.open = acpi_processor_limit_open_fs,
.read = seq_read,
.write = acpi_processor_write_limit,