1 files changed, 121 insertions, 33 deletions

diff --git a/drivers/cpufreq/cpufreq_ondemand.c b/drivers/cpufreq/cpufreq_ondemand.c
index d6ba14276bb..071699de50e 100644
--- a/drivers/cpufreq/cpufreq_ondemand.c
+++ b/drivers/cpufreq/cpufreq_ondemand.c
@@ -55,6 +55,18 @@ static unsigned int min_sampling_rate;
 #define TRANSITION_LATENCY_LIMIT		(10 * 1000 * 1000)
 
 static void do_dbs_timer(struct work_struct *work);
+static int cpufreq_governor_dbs(struct cpufreq_policy *policy,
+				unsigned int event);
+
+#ifndef CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND
+static
+#endif
+struct cpufreq_governor cpufreq_gov_ondemand = {
+       .name                   = "ondemand",
+       .governor               = cpufreq_governor_dbs,
+       .max_transition_latency = TRANSITION_LATENCY_LIMIT,
+       .owner                  = THIS_MODULE,
+};
 
 /* Sampling types */
 enum {DBS_NORMAL_SAMPLE, DBS_SUB_SAMPLE};
@@ -78,7 +90,7 @@ struct cpu_dbs_info_s {
 	 */
 	struct mutex timer_mutex;
 };
-static DEFINE_PER_CPU(struct cpu_dbs_info_s, cpu_dbs_info);
+static DEFINE_PER_CPU(struct cpu_dbs_info_s, od_cpu_dbs_info);
 
 static unsigned int dbs_enable;	/* number of CPUs using this policy */
 
@@ -149,7 +161,8 @@ static unsigned int powersave_bias_target(struct cpufreq_policy *policy,
 	unsigned int freq_hi, freq_lo;
 	unsigned int index = 0;
 	unsigned int jiffies_total, jiffies_hi, jiffies_lo;
-	struct cpu_dbs_info_s *dbs_info = &per_cpu(cpu_dbs_info, policy->cpu);
+	struct cpu_dbs_info_s *dbs_info = &per_cpu(od_cpu_dbs_info,
+						   policy->cpu);
 
 	if (!dbs_info->freq_table) {
 		dbs_info->freq_lo = 0;
@@ -192,7 +205,7 @@ static unsigned int powersave_bias_target(struct cpufreq_policy *policy,
 
 static void ondemand_powersave_bias_init_cpu(int cpu)
 {
-	struct cpu_dbs_info_s *dbs_info = &per_cpu(cpu_dbs_info, cpu);
+	struct cpu_dbs_info_s *dbs_info = &per_cpu(od_cpu_dbs_info, cpu);
 	dbs_info->freq_table = cpufreq_frequency_get_table(cpu);
 	dbs_info->freq_lo = 0;
 }
@@ -206,20 +219,23 @@ static void ondemand_powersave_bias_init(void)
 }
 
 /************************** sysfs interface ************************/
-static ssize_t show_sampling_rate_max(struct cpufreq_policy *policy, char *buf)
+
+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 cpufreq_policy *policy, char *buf)
+static ssize_t show_sampling_rate_min(struct kobject *kobj,
+				      struct attribute *attr, char *buf)
 {
 	return sprintf(buf, "%u\n", min_sampling_rate);
 }
 
 #define define_one_ro(_name)		\
-static struct freq_attr _name =		\
+static struct global_attr _name =	\
 __ATTR(_name, 0444, show_##_name, NULL)
 
 define_one_ro(sampling_rate_max);
@@ -228,7 +244,7 @@ define_one_ro(sampling_rate_min);
 /* cpufreq_ondemand Governor Tunables */
 #define show_one(file_name, object)					\
 static ssize_t show_##file_name						\
-(struct cpufreq_policy *unused, char *buf)				\
+(struct kobject *kobj, struct attribute *attr, char *buf)              \
 {									\
 	return sprintf(buf, "%u\n", dbs_tuners_ins.object);		\
 }
@@ -237,8 +253,38 @@ show_one(up_threshold, up_threshold);
 show_one(ignore_nice_load, ignore_nice);
 show_one(powersave_bias, powersave_bias);
 
-static ssize_t store_sampling_rate(struct cpufreq_policy *unused,
-		const char *buf, size_t count)
+/*** 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);
+
+#define define_one_ro_old(object, _name)       \
+static struct freq_attr object =               \
+__ATTR(_name, 0444, show_##_name##_old, NULL)
+
+define_one_ro_old(sampling_rate_min_old, sampling_rate_min);
+define_one_ro_old(sampling_rate_max_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)
 {
 	unsigned int input;
 	int ret;
@@ -253,8 +299,8 @@ static ssize_t store_sampling_rate(struct cpufreq_policy *unused,
 	return count;
 }
 
-static ssize_t store_up_threshold(struct cpufreq_policy *unused,
-		const char *buf, size_t count)
+static ssize_t store_up_threshold(struct kobject *a, struct attribute *b,
+				  const char *buf, size_t count)
 {
 	unsigned int input;
 	int ret;
@@ -272,8 +318,8 @@ static ssize_t store_up_threshold(struct cpufreq_policy *unused,
 	return count;
 }
 
-static ssize_t store_ignore_nice_load(struct cpufreq_policy *policy,
-		const char *buf, size_t count)
+static ssize_t store_ignore_nice_load(struct kobject *a, struct attribute *b,
+				      const char *buf, size_t count)
 {
 	unsigned int input;
 	int ret;
@@ -297,7 +343,7 @@ static ssize_t store_ignore_nice_load(struct cpufreq_policy *policy,
 	/* we need to re-evaluate prev_cpu_idle */
 	for_each_online_cpu(j) {
 		struct cpu_dbs_info_s *dbs_info;
-		dbs_info = &per_cpu(cpu_dbs_info, j);
+		dbs_info = &per_cpu(od_cpu_dbs_info, j);
 		dbs_info->prev_cpu_idle = get_cpu_idle_time(j,
 						&dbs_info->prev_cpu_wall);
 		if (dbs_tuners_ins.ignore_nice)
@@ -309,8 +355,8 @@ static ssize_t store_ignore_nice_load(struct cpufreq_policy *policy,
 	return count;
 }
 
-static ssize_t store_powersave_bias(struct cpufreq_policy *unused,
-		const char *buf, size_t count)
+static ssize_t store_powersave_bias(struct kobject *a, struct attribute *b,
+				    const char *buf, size_t count)
 {
 	unsigned int input;
 	int ret;
@@ -331,7 +377,7 @@ static ssize_t store_powersave_bias(struct cpufreq_policy *unused,
 }
 
 #define define_one_rw(_name) \
-static struct freq_attr _name = \
+static struct global_attr _name = \
 __ATTR(_name, 0644, show_##_name, store_##_name)
 
 define_one_rw(sampling_rate);
@@ -354,6 +400,47 @@ 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);
+
+#define define_one_rw_old(object, _name)       \
+static struct freq_attr object =               \
+__ATTR(_name, 0644, show_##_name##_old, store_##_name##_old)
+
+define_one_rw_old(sampling_rate_old, sampling_rate);
+define_one_rw_old(up_threshold_old, up_threshold);
+define_one_rw_old(ignore_nice_load_old, ignore_nice_load);
+define_one_rw_old(powersave_bias_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_check_cpu(struct cpu_dbs_info_s *this_dbs_info)
@@ -388,7 +475,7 @@ static void dbs_check_cpu(struct cpu_dbs_info_s *this_dbs_info)
 		unsigned int load, load_freq;
 		int freq_avg;
 
-		j_dbs_info = &per_cpu(cpu_dbs_info, j);
+		j_dbs_info = &per_cpu(od_cpu_dbs_info, j);
 
 		cur_idle_time = get_cpu_idle_time(j, &cur_wall_time);
 
@@ -535,7 +622,7 @@ static int cpufreq_governor_dbs(struct cpufreq_policy *policy,
 	unsigned int j;
 	int rc;
 
-	this_dbs_info = &per_cpu(cpu_dbs_info, cpu);
+	this_dbs_info = &per_cpu(od_cpu_dbs_info, cpu);
 
 	switch (event) {
 	case CPUFREQ_GOV_START:
@@ -544,7 +631,7 @@ static int cpufreq_governor_dbs(struct cpufreq_policy *policy,
 
 		mutex_lock(&dbs_mutex);
 
-		rc = sysfs_create_group(&policy->kobj, &dbs_attr_group);
+		rc = sysfs_create_group(&policy->kobj, &dbs_attr_group_old);
 		if (rc) {
 			mutex_unlock(&dbs_mutex);
 			return rc;
@@ -553,7 +640,7 @@ static int cpufreq_governor_dbs(struct cpufreq_policy *policy,
 		dbs_enable++;
 		for_each_cpu(j, policy->cpus) {
 			struct cpu_dbs_info_s *j_dbs_info;
-			j_dbs_info = &per_cpu(cpu_dbs_info, j);
+			j_dbs_info = &per_cpu(od_cpu_dbs_info, j);
 			j_dbs_info->cur_policy = policy;
 
 			j_dbs_info->prev_cpu_idle = get_cpu_idle_time(j,
@@ -565,13 +652,20 @@ static int cpufreq_governor_dbs(struct cpufreq_policy *policy,
 		}
 		this_dbs_info->cpu = cpu;
 		ondemand_powersave_bias_init_cpu(cpu);
-		mutex_init(&this_dbs_info->timer_mutex);
 		/*
 		 * Start the timerschedule work, when this governor
 		 * is used for first time
 		 */
 		if (dbs_enable == 1) {
 			unsigned int latency;
+
+			rc = sysfs_create_group(cpufreq_global_kobject,
+						&dbs_attr_group);
+			if (rc) {
+				mutex_unlock(&dbs_mutex);
+				return rc;
+			}
+
 			/* policy latency is in nS. Convert it to uS first */
 			latency = policy->cpuinfo.transition_latency / 1000;
 			if (latency == 0)
@@ -585,6 +679,7 @@ static int cpufreq_governor_dbs(struct cpufreq_policy *policy,
 		}
 		mutex_unlock(&dbs_mutex);
 
+		mutex_init(&this_dbs_info->timer_mutex);
 		dbs_timer_init(this_dbs_info);
 		break;
 
@@ -592,10 +687,13 @@ 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);
+		sysfs_remove_group(&policy->kobj, &dbs_attr_group_old);
 		mutex_destroy(&this_dbs_info->timer_mutex);
 		dbs_enable--;
 		mutex_unlock(&dbs_mutex);
+		if (!dbs_enable)
+			sysfs_remove_group(cpufreq_global_kobject,
+					   &dbs_attr_group);
 
 		break;
 
@@ -613,16 +711,6 @@ static int cpufreq_governor_dbs(struct cpufreq_policy *policy,
 	return 0;
 }
 
-#ifndef CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND
-static
-#endif
-struct cpufreq_governor cpufreq_gov_ondemand = {
-	.name			= "ondemand",
-	.governor		= cpufreq_governor_dbs,
-	.max_transition_latency = TRANSITION_LATENCY_LIMIT,
-	.owner			= THIS_MODULE,
-};
-
 static int __init cpufreq_gov_dbs_init(void)
 {
 	int err;