*/
#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) \
{ \
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;
unsigned int enable:1;
};
-/* Governers sysfs tunables */
+/* Per policy Governers sysfs tunables */
struct od_dbs_tuners {
unsigned int ignore_nice;
unsigned int sampling_rate;
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);
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 */
projects / cascardo / linux.git / blobdiff