Merge branch 'pm-cpufreq'

* pm-cpufreq: (57 commits)
  cpufreq: MAINTAINERS: Add co-maintainer
  cpufreq: pxa2xx: initialize variables
  ARM: S5pv210: compiling issue, ARM_S5PV210_CPUFREQ needs CONFIG_CPU_FREQ_TABLE=y
  cpufreq: cpu0: Put cpu parent node after using it
  cpufreq: ARM big LITTLE: Adapt to latest cpufreq updates
  cpufreq: ARM big LITTLE: put DT nodes after using them
  cpufreq: Don't call __cpufreq_governor() for drivers without target()
  cpufreq: exynos5440: Protect OPP search calls with RCU lock
  cpufreq: dbx500: Round to closest available freq
  cpufreq: Call __cpufreq_governor() with correct policy->cpus mask
  cpufreq / intel_pstate: Optimize intel_pstate_set_policy
  cpufreq: OMAP: instantiate omap-cpufreq as a platform_driver
  arm: exynos: Enable OPP library support for exynos5440
  cpufreq: exynos: Remove error return even if no soc is found
  cpufreq: exynos: Add cpufreq driver for exynos5440
  cpufreq: AMD "frequency sensitivity feedback" powersave bias for ondemand governor
  cpufreq: ondemand: allow custom powersave_bias_target handler to be registered
  cpufreq: convert cpufreq_driver to using RCU
  cpufreq: powerpc/platforms/cell: move cpufreq driver to drivers/cpufreq
  cpufreq: sparc: move cpufreq driver to drivers/cpufreq
  ...

Conflicts:
	MAINTAINERS (with commit a8e39c3 from pm-cpuidle)
	drivers/cpufreq/cpufreq_governor.h (with commit beb0ff3)

1 files changed, 110 insertions, 18 deletions

diff --git a/drivers/cpufreq/cpufreq_governor.h b/drivers/cpufreq/cpufreq_governor.h
index cc4bd2f6838a..8ac33538d0bd 100644
--- a/drivers/cpufreq/cpufreq_governor.h
+++ b/drivers/cpufreq/cpufreq_governor.h
@@ -34,20 +34,81 @@
  */
 #define MIN_SAMPLING_RATE_RATIO			(2)
 #define LATENCY_MULTIPLIER			(1000)
-#define MIN_LATENCY_MULTIPLIER			(100)
+#define MIN_LATENCY_MULTIPLIER			(20)
 #define TRANSITION_LATENCY_LIMIT		(10 * 1000 * 1000)
 
 /* Ondemand Sampling types */
 enum {OD_NORMAL_SAMPLE, OD_SUB_SAMPLE};
 
-/* Macro creating sysfs show routines */
-#define show_one(_gov, file_name, object)				\
-static ssize_t show_##file_name						\
+/*
+ * Macro for creating governors sysfs routines
+ *
+ * - gov_sys: One governor instance per whole system
+ * - gov_pol: One governor instance per policy
+ */
+
+/* Create attributes */
+#define gov_sys_attr_ro(_name)						\
+static struct global_attr _name##_gov_sys =				\
+__ATTR(_name, 0444, show_##_name##_gov_sys, NULL)
+
+#define gov_sys_attr_rw(_name)						\
+static struct global_attr _name##_gov_sys =				\
+__ATTR(_name, 0644, show_##_name##_gov_sys, store_##_name##_gov_sys)
+
+#define gov_pol_attr_ro(_name)						\
+static struct freq_attr _name##_gov_pol =				\
+__ATTR(_name, 0444, show_##_name##_gov_pol, NULL)
+
+#define gov_pol_attr_rw(_name)						\
+static struct freq_attr _name##_gov_pol =				\
+__ATTR(_name, 0644, show_##_name##_gov_pol, store_##_name##_gov_pol)
+
+#define gov_sys_pol_attr_rw(_name)					\
+	gov_sys_attr_rw(_name);						\
+	gov_pol_attr_rw(_name)
+
+#define gov_sys_pol_attr_ro(_name)					\
+	gov_sys_attr_ro(_name);						\
+	gov_pol_attr_ro(_name)
+
+/* Create show/store routines */
+#define show_one(_gov, file_name)					\
+static ssize_t show_##file_name##_gov_sys				\
 (struct kobject *kobj, struct attribute *attr, char *buf)		\
 {									\
-	return sprintf(buf, "%u\n", _gov##_tuners.object);		\
+	struct _gov##_dbs_tuners *tuners = _gov##_dbs_cdata.gdbs_data->tuners; \
+	return sprintf(buf, "%u\n", tuners->file_name);			\
+}									\
+									\
+static ssize_t show_##file_name##_gov_pol					\
+(struct cpufreq_policy *policy, char *buf)				\
+{									\
+	struct dbs_data *dbs_data = policy->governor_data;		\
+	struct _gov##_dbs_tuners *tuners = dbs_data->tuners;		\
+	return sprintf(buf, "%u\n", tuners->file_name);			\
+}
+
+#define store_one(_gov, file_name)					\
+static ssize_t store_##file_name##_gov_sys				\
+(struct kobject *kobj, struct attribute *attr, const char *buf, size_t count)	\
+{									\
+	struct dbs_data *dbs_data = _gov##_dbs_cdata.gdbs_data;		\
+	return store_##file_name(dbs_data, buf, count);			\
+}									\
+									\
+static ssize_t store_##file_name##_gov_pol				\
+(struct cpufreq_policy *policy, const char *buf, size_t count)		\
+{									\
+	struct dbs_data *dbs_data = policy->governor_data;		\
+	return store_##file_name(dbs_data, buf, count);			\
 }
 
+#define show_store_one(_gov, file_name)					\
+show_one(_gov, file_name);						\
+store_one(_gov, file_name)
+
+/* create helper routines */
 #define define_get_cpu_dbs_routines(_dbs_info)				\
 static struct cpu_dbs_common_info *get_cpu_cdbs(int cpu)		\
 {									\
@@ -87,7 +148,6 @@ struct cpu_dbs_common_info {
 
 struct od_cpu_dbs_info_s {
 	struct cpu_dbs_common_info cdbs;
-	u64 prev_cpu_iowait;
 	struct cpufreq_frequency_table *freq_table;
 	unsigned int freq_lo;
 	unsigned int freq_lo_jiffies;
@@ -103,7 +163,7 @@ struct cs_cpu_dbs_info_s {
 	unsigned int enable:1;
 };
 
-/* Governers sysfs tunables */
+/* Per policy Governers sysfs tunables */
 struct od_dbs_tuners {
 	unsigned int ignore_nice;
 	unsigned int sampling_rate;
@@ -123,31 +183,42 @@ struct cs_dbs_tuners {
 	unsigned int freq_step;
 };
 
-/* Per Governer data */
-struct dbs_data {
+/* Common Governer data across policies */
+struct dbs_data;
+struct common_dbs_data {
 	/* Common across governors */
 	#define GOV_ONDEMAND		0
 	#define GOV_CONSERVATIVE	1
 	int governor;
-	unsigned int min_sampling_rate;
-	struct attribute_group *attr_group;
-	void *tuners;
+	struct attribute_group *attr_group_gov_sys; /* one governor - system */
+	struct attribute_group *attr_group_gov_pol; /* one governor - policy */
 
-	/* dbs_mutex protects dbs_enable in governor start/stop */
-	struct mutex mutex;
+	/* Common data for platforms that don't set have_governor_per_policy */
+	struct dbs_data *gdbs_data;
 
 	struct cpu_dbs_common_info *(*get_cpu_cdbs)(int cpu);
 	void *(*get_cpu_dbs_info_s)(int cpu);
 	void (*gov_dbs_timer)(struct work_struct *work);
 	void (*gov_check_cpu)(int cpu, unsigned int load);
+	int (*init)(struct dbs_data *dbs_data);
+	void (*exit)(struct dbs_data *dbs_data);
 
 	/* Governor specific ops, see below */
 	void *gov_ops;
 };
 
+/* Governer Per policy data */
+struct dbs_data {
+	struct common_dbs_data *cdata;
+	unsigned int min_sampling_rate;
+	void *tuners;
+
+	/* dbs_mutex protects dbs_enable in governor start/stop */
+	struct mutex mutex;
+};
+
 /* Governor specific ops, will be passed to dbs_data->gov_ops */
 struct od_ops {
-	int (*io_busy)(void);
 	void (*powersave_bias_init_cpu)(int cpu);
 	unsigned int (*powersave_bias_target)(struct cpufreq_policy *policy,
 			unsigned int freq_next, unsigned int relation);
@@ -169,10 +240,31 @@ static inline int delay_for_sampling_rate(unsigned int sampling_rate)
 	return delay;
 }
 
-u64 get_cpu_idle_time(unsigned int cpu, u64 *wall);
+#define declare_show_sampling_rate_min(_gov)				\
+static ssize_t show_sampling_rate_min_gov_sys				\
+(struct kobject *kobj, struct attribute *attr, char *buf)		\
+{									\
+	struct dbs_data *dbs_data = _gov##_dbs_cdata.gdbs_data;		\
+	return sprintf(buf, "%u\n", dbs_data->min_sampling_rate);	\
+}									\
+									\
+static ssize_t show_sampling_rate_min_gov_pol				\
+(struct cpufreq_policy *policy, char *buf)				\
+{									\
+	struct dbs_data *dbs_data = policy->governor_data;		\
+	return sprintf(buf, "%u\n", dbs_data->min_sampling_rate);	\
+}
+
+u64 get_cpu_idle_time(unsigned int cpu, u64 *wall, int io_busy);
 void dbs_check_cpu(struct dbs_data *dbs_data, int cpu);
 bool need_load_eval(struct cpu_dbs_common_info *cdbs,
 		unsigned int sampling_rate);
-int cpufreq_governor_dbs(struct dbs_data *dbs_data,
-		struct cpufreq_policy *policy, unsigned int event);
+int cpufreq_governor_dbs(struct cpufreq_policy *policy,
+		struct common_dbs_data *cdata, unsigned int event);
+void gov_queue_work(struct dbs_data *dbs_data, struct cpufreq_policy *policy,
+		unsigned int delay, bool all_cpus);
+void od_register_powersave_bias_handler(unsigned int (*f)
+		(struct cpufreq_policy *, unsigned int, unsigned int),
+		unsigned int powersave_bias);
+void od_unregister_powersave_bias_handler(void);
 #endif /* _CPUFREQ_GOVERNOR_H */