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-rw-r--r--drivers/cpufreq/cpufreq.c97
-rw-r--r--drivers/cpufreq/cpufreq_conservative.c145
-rw-r--r--drivers/cpufreq/cpufreq_ondemand.c142
3 files changed, 67 insertions, 317 deletions
diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c
index 1109f6848a4..2dafc5c38ae 100644
--- a/drivers/cpufreq/cpufreq.c
+++ b/drivers/cpufreq/cpufreq.c
@@ -28,6 +28,7 @@
#include <linux/cpu.h>
#include <linux/completion.h>
#include <linux/mutex.h>
+#include <linux/syscore_ops.h>
#include <trace/events/power.h>
@@ -1340,50 +1341,45 @@ out:
}
EXPORT_SYMBOL(cpufreq_get);
+static struct sysdev_driver cpufreq_sysdev_driver = {
+ .add = cpufreq_add_dev,
+ .remove = cpufreq_remove_dev,
+};
+
/**
- * cpufreq_suspend - let the low level driver prepare for suspend
+ * cpufreq_bp_suspend - Prepare the boot CPU for system suspend.
+ *
+ * This function is only executed for the boot processor. The other CPUs
+ * have been put offline by means of CPU hotplug.
*/
-
-static int cpufreq_suspend(struct sys_device *sysdev, pm_message_t pmsg)
+static int cpufreq_bp_suspend(void)
{
int ret = 0;
- int cpu = sysdev->id;
+ int cpu = smp_processor_id();
struct cpufreq_policy *cpu_policy;
dprintk("suspending cpu %u\n", cpu);
- if (!cpu_online(cpu))
- return 0;
-
- /* we may be lax here as interrupts are off. Nonetheless
- * we need to grab the correct cpu policy, as to check
- * whether we really run on this CPU.
- */
-
+ /* If there's no policy for the boot CPU, we have nothing to do. */
cpu_policy = cpufreq_cpu_get(cpu);
if (!cpu_policy)
- return -EINVAL;
-
- /* only handle each CPU group once */
- if (unlikely(cpu_policy->cpu != cpu))
- goto out;
+ return 0;
if (cpufreq_driver->suspend) {
- ret = cpufreq_driver->suspend(cpu_policy, pmsg);
+ ret = cpufreq_driver->suspend(cpu_policy);
if (ret)
printk(KERN_ERR "cpufreq: suspend failed in ->suspend "
"step on CPU %u\n", cpu_policy->cpu);
}
-out:
cpufreq_cpu_put(cpu_policy);
return ret;
}
/**
- * cpufreq_resume - restore proper CPU frequency handling after resume
+ * cpufreq_bp_resume - Restore proper frequency handling of the boot CPU.
*
* 1.) resume CPUfreq hardware support (cpufreq_driver->resume())
* 2.) schedule call cpufreq_update_policy() ASAP as interrupts are
@@ -1391,31 +1387,23 @@ out:
* what we believe it to be. This is a bit later than when it
* should be, but nonethteless it's better than calling
* cpufreq_driver->get() here which might re-enable interrupts...
+ *
+ * This function is only executed for the boot CPU. The other CPUs have not
+ * been turned on yet.
*/
-static int cpufreq_resume(struct sys_device *sysdev)
+static void cpufreq_bp_resume(void)
{
int ret = 0;
- int cpu = sysdev->id;
+ int cpu = smp_processor_id();
struct cpufreq_policy *cpu_policy;
dprintk("resuming cpu %u\n", cpu);
- if (!cpu_online(cpu))
- return 0;
-
- /* we may be lax here as interrupts are off. Nonetheless
- * we need to grab the correct cpu policy, as to check
- * whether we really run on this CPU.
- */
-
+ /* If there's no policy for the boot CPU, we have nothing to do. */
cpu_policy = cpufreq_cpu_get(cpu);
if (!cpu_policy)
- return -EINVAL;
-
- /* only handle each CPU group once */
- if (unlikely(cpu_policy->cpu != cpu))
- goto fail;
+ return;
if (cpufreq_driver->resume) {
ret = cpufreq_driver->resume(cpu_policy);
@@ -1430,14 +1418,11 @@ static int cpufreq_resume(struct sys_device *sysdev)
fail:
cpufreq_cpu_put(cpu_policy);
- return ret;
}
-static struct sysdev_driver cpufreq_sysdev_driver = {
- .add = cpufreq_add_dev,
- .remove = cpufreq_remove_dev,
- .suspend = cpufreq_suspend,
- .resume = cpufreq_resume,
+static struct syscore_ops cpufreq_syscore_ops = {
+ .suspend = cpufreq_bp_suspend,
+ .resume = cpufreq_bp_resume,
};
@@ -1797,7 +1782,7 @@ error_out:
* cpufreq_update_policy - re-evaluate an existing cpufreq policy
* @cpu: CPU which shall be re-evaluated
*
- * Usefull for policy notifiers which have different necessities
+ * Useful for policy notifiers which have different necessities
* at different times.
*/
int cpufreq_update_policy(unsigned int cpu)
@@ -1919,8 +1904,10 @@ int cpufreq_register_driver(struct cpufreq_driver *driver_data)
ret = sysdev_driver_register(&cpu_sysdev_class,
&cpufreq_sysdev_driver);
+ if (ret)
+ goto err_null_driver;
- if ((!ret) && !(cpufreq_driver->flags & CPUFREQ_STICKY)) {
+ if (!(cpufreq_driver->flags & CPUFREQ_STICKY)) {
int i;
ret = -ENODEV;
@@ -1935,21 +1922,22 @@ int cpufreq_register_driver(struct cpufreq_driver *driver_data)
if (ret) {
dprintk("no CPU initialized for driver %s\n",
driver_data->name);
- sysdev_driver_unregister(&cpu_sysdev_class,
- &cpufreq_sysdev_driver);
-
- spin_lock_irqsave(&cpufreq_driver_lock, flags);
- cpufreq_driver = NULL;
- spin_unlock_irqrestore(&cpufreq_driver_lock, flags);
+ goto err_sysdev_unreg;
}
}
- if (!ret) {
- register_hotcpu_notifier(&cpufreq_cpu_notifier);
- dprintk("driver %s up and running\n", driver_data->name);
- cpufreq_debug_enable_ratelimit();
- }
+ register_hotcpu_notifier(&cpufreq_cpu_notifier);
+ dprintk("driver %s up and running\n", driver_data->name);
+ cpufreq_debug_enable_ratelimit();
+ return 0;
+err_sysdev_unreg:
+ sysdev_driver_unregister(&cpu_sysdev_class,
+ &cpufreq_sysdev_driver);
+err_null_driver:
+ spin_lock_irqsave(&cpufreq_driver_lock, flags);
+ cpufreq_driver = NULL;
+ spin_unlock_irqrestore(&cpufreq_driver_lock, flags);
return ret;
}
EXPORT_SYMBOL_GPL(cpufreq_register_driver);
@@ -1999,6 +1987,7 @@ static int __init cpufreq_core_init(void)
cpufreq_global_kobject = kobject_create_and_add("cpufreq",
&cpu_sysdev_class.kset.kobj);
BUG_ON(!cpufreq_global_kobject);
+ register_syscore_ops(&cpufreq_syscore_ops);
return 0;
}
diff --git a/drivers/cpufreq/cpufreq_conservative.c b/drivers/cpufreq/cpufreq_conservative.c
index 526bfbf6961..33b56e5c5c1 100644
--- a/drivers/cpufreq/cpufreq_conservative.c
+++ b/drivers/cpufreq/cpufreq_conservative.c
@@ -76,13 +76,10 @@ static DEFINE_PER_CPU(struct cpu_dbs_info_s, cs_cpu_dbs_info);
static unsigned int dbs_enable; /* number of CPUs using this policy */
/*
- * dbs_mutex protects data in dbs_tuners_ins from concurrent changes on
- * different CPUs. It protects dbs_enable in governor start/stop.
+ * dbs_mutex protects dbs_enable in governor start/stop.
*/
static DEFINE_MUTEX(dbs_mutex);
-static struct workqueue_struct *kconservative_wq;
-
static struct dbs_tuners {
unsigned int sampling_rate;
unsigned int sampling_down_factor;
@@ -118,7 +115,7 @@ static inline cputime64_t get_cpu_idle_time_jiffy(unsigned int cpu,
if (wall)
*wall = (cputime64_t)jiffies_to_usecs(cur_wall_time);
- return (cputime64_t)jiffies_to_usecs(idle_time);;
+ return (cputime64_t)jiffies_to_usecs(idle_time);
}
static inline cputime64_t get_cpu_idle_time(unsigned int cpu, cputime64_t *wall)
@@ -164,21 +161,12 @@ static struct notifier_block dbs_cpufreq_notifier_block = {
};
/************************** sysfs interface ************************/
-static ssize_t show_sampling_rate_max(struct kobject *kobj,
- struct attribute *attr, char *buf)
-{
- printk_once(KERN_INFO "CPUFREQ: conservative sampling_rate_max "
- "sysfs file is deprecated - used by: %s\n", current->comm);
- return sprintf(buf, "%u\n", -1U);
-}
-
static ssize_t show_sampling_rate_min(struct kobject *kobj,
struct attribute *attr, char *buf)
{
return sprintf(buf, "%u\n", min_sampling_rate);
}
-define_one_global_ro(sampling_rate_max);
define_one_global_ro(sampling_rate_min);
/* cpufreq_conservative Governor Tunables */
@@ -195,33 +183,6 @@ show_one(down_threshold, down_threshold);
show_one(ignore_nice_load, ignore_nice);
show_one(freq_step, freq_step);
-/*** delete after deprecation time ***/
-#define DEPRECATION_MSG(file_name) \
- printk_once(KERN_INFO "CPUFREQ: Per core conservative sysfs " \
- "interface is deprecated - " #file_name "\n");
-
-#define show_one_old(file_name) \
-static ssize_t show_##file_name##_old \
-(struct cpufreq_policy *unused, char *buf) \
-{ \
- printk_once(KERN_INFO "CPUFREQ: Per core conservative sysfs " \
- "interface is deprecated - " #file_name "\n"); \
- return show_##file_name(NULL, NULL, buf); \
-}
-show_one_old(sampling_rate);
-show_one_old(sampling_down_factor);
-show_one_old(up_threshold);
-show_one_old(down_threshold);
-show_one_old(ignore_nice_load);
-show_one_old(freq_step);
-show_one_old(sampling_rate_min);
-show_one_old(sampling_rate_max);
-
-cpufreq_freq_attr_ro_old(sampling_rate_min);
-cpufreq_freq_attr_ro_old(sampling_rate_max);
-
-/*** delete after deprecation time ***/
-
static ssize_t store_sampling_down_factor(struct kobject *a,
struct attribute *b,
const char *buf, size_t count)
@@ -233,10 +194,7 @@ static ssize_t store_sampling_down_factor(struct kobject *a,
if (ret != 1 || input > MAX_SAMPLING_DOWN_FACTOR || input < 1)
return -EINVAL;
- mutex_lock(&dbs_mutex);
dbs_tuners_ins.sampling_down_factor = input;
- mutex_unlock(&dbs_mutex);
-
return count;
}
@@ -250,10 +208,7 @@ static ssize_t store_sampling_rate(struct kobject *a, struct attribute *b,
if (ret != 1)
return -EINVAL;
- mutex_lock(&dbs_mutex);
dbs_tuners_ins.sampling_rate = max(input, min_sampling_rate);
- mutex_unlock(&dbs_mutex);
-
return count;
}
@@ -264,16 +219,11 @@ static ssize_t store_up_threshold(struct kobject *a, struct attribute *b,
int ret;
ret = sscanf(buf, "%u", &input);
- mutex_lock(&dbs_mutex);
if (ret != 1 || input > 100 ||
- input <= dbs_tuners_ins.down_threshold) {
- mutex_unlock(&dbs_mutex);
+ input <= dbs_tuners_ins.down_threshold)
return -EINVAL;
- }
dbs_tuners_ins.up_threshold = input;
- mutex_unlock(&dbs_mutex);
-
return count;
}
@@ -284,17 +234,12 @@ static ssize_t store_down_threshold(struct kobject *a, struct attribute *b,
int ret;
ret = sscanf(buf, "%u", &input);
- mutex_lock(&dbs_mutex);
/* cannot be lower than 11 otherwise freq will not fall */
if (ret != 1 || input < 11 || input > 100 ||
- input >= dbs_tuners_ins.up_threshold) {
- mutex_unlock(&dbs_mutex);
+ input >= dbs_tuners_ins.up_threshold)
return -EINVAL;
- }
dbs_tuners_ins.down_threshold = input;
- mutex_unlock(&dbs_mutex);
-
return count;
}
@@ -313,11 +258,9 @@ static ssize_t store_ignore_nice_load(struct kobject *a, struct attribute *b,
if (input > 1)
input = 1;
- mutex_lock(&dbs_mutex);
- if (input == dbs_tuners_ins.ignore_nice) { /* nothing to do */
- mutex_unlock(&dbs_mutex);
+ if (input == dbs_tuners_ins.ignore_nice) /* nothing to do */
return count;
- }
+
dbs_tuners_ins.ignore_nice = input;
/* we need to re-evaluate prev_cpu_idle */
@@ -329,8 +272,6 @@ static ssize_t store_ignore_nice_load(struct kobject *a, struct attribute *b,
if (dbs_tuners_ins.ignore_nice)
dbs_info->prev_cpu_nice = kstat_cpu(j).cpustat.nice;
}
- mutex_unlock(&dbs_mutex);
-
return count;
}
@@ -349,10 +290,7 @@ static ssize_t store_freq_step(struct kobject *a, struct attribute *b,
/* no need to test here if freq_step is zero as the user might actually
* want this, they would be crazy though :) */
- mutex_lock(&dbs_mutex);
dbs_tuners_ins.freq_step = input;
- mutex_unlock(&dbs_mutex);
-
return count;
}
@@ -364,7 +302,6 @@ define_one_global_rw(ignore_nice_load);
define_one_global_rw(freq_step);
static struct attribute *dbs_attributes[] = {
- &sampling_rate_max.attr,
&sampling_rate_min.attr,
&sampling_rate.attr,
&sampling_down_factor.attr,
@@ -380,49 +317,6 @@ static struct attribute_group dbs_attr_group = {
.name = "conservative",
};
-/*** delete after deprecation time ***/
-
-#define write_one_old(file_name) \
-static ssize_t store_##file_name##_old \
-(struct cpufreq_policy *unused, const char *buf, size_t count) \
-{ \
- printk_once(KERN_INFO "CPUFREQ: Per core conservative sysfs " \
- "interface is deprecated - " #file_name "\n"); \
- return store_##file_name(NULL, NULL, buf, count); \
-}
-write_one_old(sampling_rate);
-write_one_old(sampling_down_factor);
-write_one_old(up_threshold);
-write_one_old(down_threshold);
-write_one_old(ignore_nice_load);
-write_one_old(freq_step);
-
-cpufreq_freq_attr_rw_old(sampling_rate);
-cpufreq_freq_attr_rw_old(sampling_down_factor);
-cpufreq_freq_attr_rw_old(up_threshold);
-cpufreq_freq_attr_rw_old(down_threshold);
-cpufreq_freq_attr_rw_old(ignore_nice_load);
-cpufreq_freq_attr_rw_old(freq_step);
-
-static struct attribute *dbs_attributes_old[] = {
- &sampling_rate_max_old.attr,
- &sampling_rate_min_old.attr,
- &sampling_rate_old.attr,
- &sampling_down_factor_old.attr,
- &up_threshold_old.attr,
- &down_threshold_old.attr,
- &ignore_nice_load_old.attr,
- &freq_step_old.attr,
- NULL
-};
-
-static struct attribute_group dbs_attr_group_old = {
- .attrs = dbs_attributes_old,
- .name = "conservative",
-};
-
-/*** delete after deprecation time ***/
-
/************************** sysfs end ************************/
static void dbs_check_cpu(struct cpu_dbs_info_s *this_dbs_info)
@@ -560,7 +454,7 @@ static void do_dbs_timer(struct work_struct *work)
dbs_check_cpu(dbs_info);
- queue_delayed_work_on(cpu, kconservative_wq, &dbs_info->work, delay);
+ schedule_delayed_work_on(cpu, &dbs_info->work, delay);
mutex_unlock(&dbs_info->timer_mutex);
}
@@ -572,8 +466,7 @@ static inline void dbs_timer_init(struct cpu_dbs_info_s *dbs_info)
dbs_info->enable = 1;
INIT_DELAYED_WORK_DEFERRABLE(&dbs_info->work, do_dbs_timer);
- queue_delayed_work_on(dbs_info->cpu, kconservative_wq, &dbs_info->work,
- delay);
+ schedule_delayed_work_on(dbs_info->cpu, &dbs_info->work, delay);
}
static inline void dbs_timer_exit(struct cpu_dbs_info_s *dbs_info)
@@ -599,12 +492,6 @@ static int cpufreq_governor_dbs(struct cpufreq_policy *policy,
mutex_lock(&dbs_mutex);
- rc = sysfs_create_group(&policy->kobj, &dbs_attr_group_old);
- if (rc) {
- mutex_unlock(&dbs_mutex);
- return rc;
- }
-
for_each_cpu(j, policy->cpus) {
struct cpu_dbs_info_s *j_dbs_info;
j_dbs_info = &per_cpu(cs_cpu_dbs_info, j);
@@ -667,7 +554,6 @@ static int cpufreq_governor_dbs(struct cpufreq_policy *policy,
dbs_timer_exit(this_dbs_info);
mutex_lock(&dbs_mutex);
- sysfs_remove_group(&policy->kobj, &dbs_attr_group_old);
dbs_enable--;
mutex_destroy(&this_dbs_info->timer_mutex);
@@ -716,25 +602,12 @@ struct cpufreq_governor cpufreq_gov_conservative = {
static int __init cpufreq_gov_dbs_init(void)
{
- int err;
-
- kconservative_wq = create_workqueue("kconservative");
- if (!kconservative_wq) {
- printk(KERN_ERR "Creation of kconservative failed\n");
- return -EFAULT;
- }
-
- err = cpufreq_register_governor(&cpufreq_gov_conservative);
- if (err)
- destroy_workqueue(kconservative_wq);
-
- return err;
+ return cpufreq_register_governor(&cpufreq_gov_conservative);
}
static void __exit cpufreq_gov_dbs_exit(void)
{
cpufreq_unregister_governor(&cpufreq_gov_conservative);
- destroy_workqueue(kconservative_wq);
}
diff --git a/drivers/cpufreq/cpufreq_ondemand.c b/drivers/cpufreq/cpufreq_ondemand.c
index c631f27a3dc..891360edecd 100644
--- a/drivers/cpufreq/cpufreq_ondemand.c
+++ b/drivers/cpufreq/cpufreq_ondemand.c
@@ -99,13 +99,10 @@ static DEFINE_PER_CPU(struct cpu_dbs_info_s, od_cpu_dbs_info);
static unsigned int dbs_enable; /* number of CPUs using this policy */
/*
- * dbs_mutex protects data in dbs_tuners_ins from concurrent changes on
- * different CPUs. It protects dbs_enable in governor start/stop.
+ * dbs_mutex protects dbs_enable in governor start/stop.
*/
static DEFINE_MUTEX(dbs_mutex);
-static struct workqueue_struct *kondemand_wq;
-
static struct dbs_tuners {
unsigned int sampling_rate;
unsigned int up_threshold;
@@ -237,21 +234,12 @@ static void ondemand_powersave_bias_init(void)
/************************** sysfs interface ************************/
-static ssize_t show_sampling_rate_max(struct kobject *kobj,
- struct attribute *attr, char *buf)
-{
- printk_once(KERN_INFO "CPUFREQ: ondemand sampling_rate_max "
- "sysfs file is deprecated - used by: %s\n", current->comm);
- return sprintf(buf, "%u\n", -1U);
-}
-
static ssize_t show_sampling_rate_min(struct kobject *kobj,
struct attribute *attr, char *buf)
{
return sprintf(buf, "%u\n", min_sampling_rate);
}
-define_one_global_ro(sampling_rate_max);
define_one_global_ro(sampling_rate_min);
/* cpufreq_ondemand Governor Tunables */
@@ -268,32 +256,6 @@ show_one(sampling_down_factor, sampling_down_factor);
show_one(ignore_nice_load, ignore_nice);
show_one(powersave_bias, powersave_bias);
-/*** delete after deprecation time ***/
-
-#define DEPRECATION_MSG(file_name) \
- printk_once(KERN_INFO "CPUFREQ: Per core ondemand sysfs " \
- "interface is deprecated - " #file_name "\n");
-
-#define show_one_old(file_name) \
-static ssize_t show_##file_name##_old \
-(struct cpufreq_policy *unused, char *buf) \
-{ \
- printk_once(KERN_INFO "CPUFREQ: Per core ondemand sysfs " \
- "interface is deprecated - " #file_name "\n"); \
- return show_##file_name(NULL, NULL, buf); \
-}
-show_one_old(sampling_rate);
-show_one_old(up_threshold);
-show_one_old(ignore_nice_load);
-show_one_old(powersave_bias);
-show_one_old(sampling_rate_min);
-show_one_old(sampling_rate_max);
-
-cpufreq_freq_attr_ro_old(sampling_rate_min);
-cpufreq_freq_attr_ro_old(sampling_rate_max);
-
-/*** delete after deprecation time ***/
-
static ssize_t store_sampling_rate(struct kobject *a, struct attribute *b,
const char *buf, size_t count)
{
@@ -302,11 +264,7 @@ static ssize_t store_sampling_rate(struct kobject *a, struct attribute *b,
ret = sscanf(buf, "%u", &input);
if (ret != 1)
return -EINVAL;
-
- mutex_lock(&dbs_mutex);
dbs_tuners_ins.sampling_rate = max(input, min_sampling_rate);
- mutex_unlock(&dbs_mutex);
-
return count;
}
@@ -319,11 +277,7 @@ static ssize_t store_io_is_busy(struct kobject *a, struct attribute *b,
ret = sscanf(buf, "%u", &input);
if (ret != 1)
return -EINVAL;
-
- mutex_lock(&dbs_mutex);
dbs_tuners_ins.io_is_busy = !!input;
- mutex_unlock(&dbs_mutex);
-
return count;
}
@@ -338,11 +292,7 @@ static ssize_t store_up_threshold(struct kobject *a, struct attribute *b,
input < MIN_FREQUENCY_UP_THRESHOLD) {
return -EINVAL;
}
-
- mutex_lock(&dbs_mutex);
dbs_tuners_ins.up_threshold = input;
- mutex_unlock(&dbs_mutex);
-
return count;
}
@@ -355,7 +305,6 @@ static ssize_t store_sampling_down_factor(struct kobject *a,
if (ret != 1 || input > MAX_SAMPLING_DOWN_FACTOR || input < 1)
return -EINVAL;
- mutex_lock(&dbs_mutex);
dbs_tuners_ins.sampling_down_factor = input;
/* Reset down sampling multiplier in case it was active */
@@ -364,8 +313,6 @@ static ssize_t store_sampling_down_factor(struct kobject *a,
dbs_info = &per_cpu(od_cpu_dbs_info, j);
dbs_info->rate_mult = 1;
}
- mutex_unlock(&dbs_mutex);
-
return count;
}
@@ -384,9 +331,7 @@ static ssize_t store_ignore_nice_load(struct kobject *a, struct attribute *b,
if (input > 1)
input = 1;
- mutex_lock(&dbs_mutex);
if (input == dbs_tuners_ins.ignore_nice) { /* nothing to do */
- mutex_unlock(&dbs_mutex);
return count;
}
dbs_tuners_ins.ignore_nice = input;
@@ -401,8 +346,6 @@ static ssize_t store_ignore_nice_load(struct kobject *a, struct attribute *b,
dbs_info->prev_cpu_nice = kstat_cpu(j).cpustat.nice;
}
- mutex_unlock(&dbs_mutex);
-
return count;
}
@@ -419,11 +362,8 @@ static ssize_t store_powersave_bias(struct kobject *a, struct attribute *b,
if (input > 1000)
input = 1000;
- mutex_lock(&dbs_mutex);
dbs_tuners_ins.powersave_bias = input;
ondemand_powersave_bias_init();
- mutex_unlock(&dbs_mutex);
-
return count;
}
@@ -435,7 +375,6 @@ define_one_global_rw(ignore_nice_load);
define_one_global_rw(powersave_bias);
static struct attribute *dbs_attributes[] = {
- &sampling_rate_max.attr,
&sampling_rate_min.attr,
&sampling_rate.attr,
&up_threshold.attr,
@@ -451,43 +390,6 @@ static struct attribute_group dbs_attr_group = {
.name = "ondemand",
};
-/*** delete after deprecation time ***/
-
-#define write_one_old(file_name) \
-static ssize_t store_##file_name##_old \
-(struct cpufreq_policy *unused, const char *buf, size_t count) \
-{ \
- printk_once(KERN_INFO "CPUFREQ: Per core ondemand sysfs " \
- "interface is deprecated - " #file_name "\n"); \
- return store_##file_name(NULL, NULL, buf, count); \
-}
-write_one_old(sampling_rate);
-write_one_old(up_threshold);
-write_one_old(ignore_nice_load);
-write_one_old(powersave_bias);
-
-cpufreq_freq_attr_rw_old(sampling_rate);
-cpufreq_freq_attr_rw_old(up_threshold);
-cpufreq_freq_attr_rw_old(ignore_nice_load);
-cpufreq_freq_attr_rw_old(powersave_bias);
-
-static struct attribute *dbs_attributes_old[] = {
- &sampling_rate_max_old.attr,
- &sampling_rate_min_old.attr,
- &sampling_rate_old.attr,
- &up_threshold_old.attr,
- &ignore_nice_load_old.attr,
- &powersave_bias_old.attr,
- NULL
-};
-
-static struct attribute_group dbs_attr_group_old = {
- .attrs = dbs_attributes_old,
- .name = "ondemand",
-};
-
-/*** delete after deprecation time ***/
-
/************************** sysfs end ************************/
static void dbs_freq_increase(struct cpufreq_policy *p, unsigned int freq)
@@ -644,12 +546,7 @@ static void do_dbs_timer(struct work_struct *work)
unsigned int cpu = dbs_info->cpu;
int sample_type = dbs_info->sample_type;
- /* We want all CPUs to do sampling nearly on same jiffy */
- int delay = usecs_to_jiffies(dbs_tuners_ins.sampling_rate
- * dbs_info->rate_mult);
-
- if (num_online_cpus() > 1)
- delay -= jiffies % delay;
+ int delay;
mutex_lock(&dbs_info->timer_mutex);
@@ -662,12 +559,22 @@ static void do_dbs_timer(struct work_struct *work)
/* Setup timer for SUB_SAMPLE */
dbs_info->sample_type = DBS_SUB_SAMPLE;
delay = dbs_info->freq_hi_jiffies;
+ } else {
+ /* We want all CPUs to do sampling nearly on
+ * same jiffy
+ */
+ delay = usecs_to_jiffies(dbs_tuners_ins.sampling_rate
+ * dbs_info->rate_mult);
+
+ if (num_online_cpus() > 1)
+ delay -= jiffies % delay;
}
} else {
__cpufreq_driver_target(dbs_info->cur_policy,
dbs_info->freq_lo, CPUFREQ_RELATION_H);
+ delay = dbs_info->freq_lo_jiffies;
}
- queue_delayed_work_on(cpu, kondemand_wq, &dbs_info->work, delay);
+ schedule_delayed_work_on(cpu, &dbs_info->work, delay);
mutex_unlock(&dbs_info->timer_mutex);
}
@@ -681,8 +588,7 @@ static inline void dbs_timer_init(struct cpu_dbs_info_s *dbs_info)
dbs_info->sample_type = DBS_NORMAL_SAMPLE;
INIT_DELAYED_WORK_DEFERRABLE(&dbs_info->work, do_dbs_timer);
- queue_delayed_work_on(dbs_info->cpu, kondemand_wq, &dbs_info->work,
- delay);
+ schedule_delayed_work_on(dbs_info->cpu, &dbs_info->work, delay);
}
static inline void dbs_timer_exit(struct cpu_dbs_info_s *dbs_info)
@@ -730,12 +636,6 @@ static int cpufreq_governor_dbs(struct cpufreq_policy *policy,
mutex_lock(&dbs_mutex);
- rc = sysfs_create_group(&policy->kobj, &dbs_attr_group_old);
- if (rc) {
- mutex_unlock(&dbs_mutex);
- return rc;
- }
-
dbs_enable++;
for_each_cpu(j, policy->cpus) {
struct cpu_dbs_info_s *j_dbs_info;
@@ -788,7 +688,6 @@ static int cpufreq_governor_dbs(struct cpufreq_policy *policy,
dbs_timer_exit(this_dbs_info);
mutex_lock(&dbs_mutex);
- sysfs_remove_group(&policy->kobj, &dbs_attr_group_old);
mutex_destroy(&this_dbs_info->timer_mutex);
dbs_enable--;
mutex_unlock(&dbs_mutex);
@@ -814,7 +713,6 @@ static int cpufreq_governor_dbs(struct cpufreq_policy *policy,
static int __init cpufreq_gov_dbs_init(void)
{
- int err;
cputime64_t wall;
u64 idle_time;
int cpu = get_cpu();
@@ -838,22 +736,12 @@ static int __init cpufreq_gov_dbs_init(void)
MIN_SAMPLING_RATE_RATIO * jiffies_to_usecs(10);
}
- kondemand_wq = create_workqueue("kondemand");
- if (!kondemand_wq) {
- printk(KERN_ERR "Creation of kondemand failed\n");
- return -EFAULT;
- }
- err = cpufreq_register_governor(&cpufreq_gov_ondemand);
- if (err)
- destroy_workqueue(kondemand_wq);
-
- return err;
+ return cpufreq_register_governor(&cpufreq_gov_ondemand);
}
static void __exit cpufreq_gov_dbs_exit(void)
{
cpufreq_unregister_governor(&cpufreq_gov_ondemand);
- destroy_workqueue(kondemand_wq);
}
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2024-12-16 12:29:35 +0000