1 files changed, 15 insertions, 127 deletions

diff --git a/drivers/cpufreq/cpufreq_ondemand.c b/drivers/cpufreq/cpufreq_ondemand.c
index c631f27a3dcc..891360edecdd 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);
 }