Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/davej/cpufreq

* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/davej/cpufreq:
[CPUFREQ] pcc-cpufreq: remove duplicate statements
[CPUFREQ] Remove the pm_message_t argument from driver suspend
[CPUFREQ] Remove unneeded locks
[CPUFREQ] Remove old, deprecated per cpu ondemand/conservative sysfs files
[CPUFREQ] Remove deprecated sysfs file sampling_rate_max
[CPUFREQ] powernow-k8: The table index is not worth displaying
[CPUFREQ] calculate delay after dbs_check_cpu
[CPUFREQ] Add documentation for sampling_down_factor
[CPUFREQ] drivers/cpufreq: Remove unnecessary semicolons

Documentation/cpu-freq/governors.txt

···
 takes to complete as you can 'nice' it and prevent it from taking part
 in the deciding process of whether to increase your CPU frequency.
 
+sampling_down_factor: this parameter controls the rate at which the
+kernel makes a decision on when to decrease the frequency while running
+at top speed. When set to 1 (the default) decisions to reevaluate load
+are made at the same interval regardless of current clock speed. But
+when set to greater than 1 (e.g. 100) it acts as a multiplier for the
+scheduling interval for reevaluating load when the CPU is at its top
+speed due to high load. This improves performance by reducing the overhead
+of load evaluation and helping the CPU stay at its top speed when truly
+busy, rather than shifting back and forth in speed. This tunable has no
+effect on behavior at lower speeds/lower CPU loads.
+
 
 2.5 Conservative
 ----------------

arch/arm/mach-s5pv210/cpufreq.c

···
 }
 
 #ifdef CONFIG_PM
-static int s5pv210_cpufreq_suspend(struct cpufreq_policy *policy,
-				   pm_message_t pmsg)
+static int s5pv210_cpufreq_suspend(struct cpufreq_policy *policy)
 {
 	return 0;
 }

arch/arm/mach-s5pv310/cpufreq.c

···
 }
 
 #ifdef CONFIG_PM
-static int s5pv310_cpufreq_suspend(struct cpufreq_policy *policy,
-				   pm_message_t pmsg)
+static int s5pv310_cpufreq_suspend(struct cpufreq_policy *policy)
 {
 	return 0;
 }

arch/arm/plat-s3c24xx/cpu-freq.c

···
 static struct cpufreq_frequency_table suspend_pll;
 static unsigned int suspend_freq;
 
-static int s3c_cpufreq_suspend(struct cpufreq_policy *policy, pm_message_t pmsg)
+static int s3c_cpufreq_suspend(struct cpufreq_policy *policy)
 {
 	suspend_pll.frequency = clk_get_rate(_clk_mpll);
 	suspend_pll.index = __raw_readl(S3C2410_MPLLCON);

arch/powerpc/platforms/powermac/cpufreq_32.c

···
 	return offset;
 }
 
-static int pmac_cpufreq_suspend(struct cpufreq_policy *policy, pm_message_t pmsg)
+static int pmac_cpufreq_suspend(struct cpufreq_policy *policy)
 {
 	/* Ok, this could be made a bit smarter, but let's be robust for now. We
 	 * always force a speed change to high speed before sleep, to make sure

arch/x86/kernel/cpu/cpufreq/pcc-cpufreq.c

···
 
 	input.count = 4;
 	input.pointer = in_params;
-	input.count = 4;
-	input.pointer = in_params;
 	in_params[0].type               = ACPI_TYPE_BUFFER;
 	in_params[0].buffer.length      = 16;
 	in_params[0].buffer.pointer     = OSC_UUID;

arch/x86/kernel/cpu/cpufreq/powernow-k8.c

···
 					data->powernow_table[j].frequency/1000);
 			} else {
 				printk(KERN_INFO PFX
-					"   %d : fid 0x%x (%d MHz), vid 0x%x\n",
-					j,
+					"fid 0x%x (%d MHz), vid 0x%x\n",
 					data->powernow_table[j].index & 0xff,
 					data->powernow_table[j].frequency/1000,
 					data->powernow_table[j].index >> 8);

drivers/cpufreq/cpufreq.c

···
 		goto out;
 
 	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);

drivers/cpufreq/cpufreq_conservative.c

···
 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);
 
···
 	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)
···
 };
 
 /************************** 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 */
···
 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)
···
 	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;
 }
 
···
 	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;
 }
 
···
 	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;
 }
 
···
 	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;
 }
 
···
 	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 */
···
 		if (dbs_tuners_ins.ignore_nice)
 			dbs_info->prev_cpu_nice = kstat_cpu(j).cpustat.nice;
 	}
-	mutex_unlock(&dbs_mutex);
-
 	return count;
 }
 
···
 
 	/* 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;
 }
 
···
 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,
···
 	.attrs = dbs_attributes,
 	.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 ************************/
 
···
 
 		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);
···
 		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);
 

drivers/cpufreq/cpufreq_ondemand.c

···
 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);
 
···
 
 /************************** 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 */
···
 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)
 {
···
 	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;
 }
 
···
 	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;
 }
 
···
 			input < MIN_FREQUENCY_UP_THRESHOLD) {
 		return -EINVAL;
 	}
-
-	mutex_lock(&dbs_mutex);
 	dbs_tuners_ins.up_threshold = input;
-	mutex_unlock(&dbs_mutex);
-
 	return count;
 }
 
···
 
 	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 */
···
 		dbs_info = &per_cpu(od_cpu_dbs_info, j);
 		dbs_info->rate_mult = 1;
 	}
-	mutex_unlock(&dbs_mutex);
-
 	return count;
 }
 
···
 	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;
···
 			dbs_info->prev_cpu_nice = kstat_cpu(j).cpustat.nice;
 
 	}
-	mutex_unlock(&dbs_mutex);
-
 	return count;
 }
 
···
 	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;
 }
 
···
 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,
···
 	.attrs = dbs_attributes,
 	.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 ************************/
 
···
 	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);
 
···
 			/* 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;
 	}
 	schedule_delayed_work_on(cpu, &dbs_info->work, delay);
 	mutex_unlock(&dbs_info->timer_mutex);
···
 
 		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;
···
 		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);

include/linux/cpufreq.h

···
 	int	(*bios_limit)	(int cpu, unsigned int *limit);
 
 	int	(*exit)		(struct cpufreq_policy *policy);
-	int	(*suspend)	(struct cpufreq_policy *policy, pm_message_t pmsg);
+	int	(*suspend)	(struct cpufreq_policy *policy);
 	int	(*resume)	(struct cpufreq_policy *policy);
 	struct freq_attr	**attr;
 };
···
 static struct freq_attr _name =			\
 __ATTR(_name, _perm, show_##_name, NULL)
 
-#define cpufreq_freq_attr_ro_old(_name)		\
-static struct freq_attr _name##_old =		\
-__ATTR(_name, 0444, show_##_name##_old, NULL)
-
 #define cpufreq_freq_attr_rw(_name)		\
 static struct freq_attr _name =			\
 __ATTR(_name, 0644, show_##_name, store_##_name)
-
-#define cpufreq_freq_attr_rw_old(_name)		\
-static struct freq_attr _name##_old =		\
-__ATTR(_name, 0644, show_##_name##_old, store_##_name##_old)
-
 
 struct global_attr {
 	struct attribute attr;