summaryrefslogtreecommitdiffstats
path: root/drivers/cpufreq/cpufreq_conservative.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/cpufreq/cpufreq_conservative.c')
-rw-r--r--drivers/cpufreq/cpufreq_conservative.c123
1 files changed, 6 insertions, 117 deletions
diff --git a/drivers/cpufreq/cpufreq_conservative.c b/drivers/cpufreq/cpufreq_conservative.c
index 94284c8473b..33b56e5c5c1 100644
--- a/drivers/cpufreq/cpufreq_conservative.c
+++ b/drivers/cpufreq/cpufreq_conservative.c
@@ -76,8 +76,7 @@ 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);
@@ -116,7 +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)
@@ -162,21 +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 */
@@ -193,33 +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)
@@ -231,10 +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;
}
@@ -248,10 +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;
}
@@ -262,16 +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;
}
@@ -282,17 +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;
}
@@ -311,11 +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 */
@@ -327,8 +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;
}
@@ -347,10 +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;
}
@@ -362,7 +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,
@@ -378,49 +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)
@@ -596,12 +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);
@@ -664,7 +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);