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authorRafael J. Wysocki <rafael.j.wysocki@intel.com>2016-03-22 04:47:51 +0300
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2016-04-02 02:09:00 +0300
commit0dd3c1d678aa219a7332984fcedbdd8970e92d5b (patch)
tree9ac34d05785083187229f0b206cd06f9ded9e5c1 /drivers/cpufreq/cpufreq_governor.h
parent0bed612be638e41456cd8cb270a2b411a5b43d63 (diff)
downloadlinux-0dd3c1d678aa219a7332984fcedbdd8970e92d5b.tar.xz
cpufreq: governor: New data type for management part of dbs_data
In addition to fields representing governor tunables, struct dbs_data contains some fields needed for the management of objects of that type. As it turns out, that part of struct dbs_data may be shared with (future) governors that won't use the common code used by "ondemand" and "conservative", so move it to a separate struct type and modify the code using struct dbs_data to follow. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Diffstat (limited to 'drivers/cpufreq/cpufreq_governor.h')
-rw-r--r--drivers/cpufreq/cpufreq_governor.h35
1 files changed, 20 insertions, 15 deletions
diff --git a/drivers/cpufreq/cpufreq_governor.h b/drivers/cpufreq/cpufreq_governor.h
index 61ff82fe0613..f4ad431130b8 100644
--- a/drivers/cpufreq/cpufreq_governor.h
+++ b/drivers/cpufreq/cpufreq_governor.h
@@ -41,6 +41,13 @@
/* Ondemand Sampling types */
enum {OD_NORMAL_SAMPLE, OD_SUB_SAMPLE};
+struct gov_attr_set {
+ struct kobject kobj;
+ struct list_head policy_list;
+ struct mutex update_lock;
+ int usage_count;
+};
+
/*
* Abbreviations:
* dbs: used as a shortform for demand based switching It helps to keep variable
@@ -52,7 +59,7 @@ enum {OD_NORMAL_SAMPLE, OD_SUB_SAMPLE};
/* Governor demand based switching data (per-policy or global). */
struct dbs_data {
- int usage_count;
+ struct gov_attr_set attr_set;
void *tuners;
unsigned int min_sampling_rate;
unsigned int ignore_nice_load;
@@ -60,37 +67,35 @@ struct dbs_data {
unsigned int sampling_down_factor;
unsigned int up_threshold;
unsigned int io_is_busy;
-
- struct kobject kobj;
- struct list_head policy_dbs_list;
- /*
- * Protect concurrent updates to governor tunables from sysfs,
- * policy_dbs_list and usage_count.
- */
- struct mutex mutex;
};
+static inline struct dbs_data *to_dbs_data(struct gov_attr_set *attr_set)
+{
+ return container_of(attr_set, struct dbs_data, attr_set);
+}
+
/* Governor's specific attributes */
-struct dbs_data;
struct governor_attr {
struct attribute attr;
- ssize_t (*show)(struct dbs_data *dbs_data, char *buf);
- ssize_t (*store)(struct dbs_data *dbs_data, const char *buf,
+ ssize_t (*show)(struct gov_attr_set *attr_set, char *buf);
+ ssize_t (*store)(struct gov_attr_set *attr_set, const char *buf,
size_t count);
};
#define gov_show_one(_gov, file_name) \
static ssize_t show_##file_name \
-(struct dbs_data *dbs_data, char *buf) \
+(struct gov_attr_set *attr_set, char *buf) \
{ \
+ struct dbs_data *dbs_data = to_dbs_data(attr_set); \
struct _gov##_dbs_tuners *tuners = dbs_data->tuners; \
return sprintf(buf, "%u\n", tuners->file_name); \
}
#define gov_show_one_common(file_name) \
static ssize_t show_##file_name \
-(struct dbs_data *dbs_data, char *buf) \
+(struct gov_attr_set *attr_set, char *buf) \
{ \
+ struct dbs_data *dbs_data = to_dbs_data(attr_set); \
return sprintf(buf, "%u\n", dbs_data->file_name); \
}
@@ -184,7 +189,7 @@ 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);
-ssize_t store_sampling_rate(struct dbs_data *dbs_data, const char *buf,
+ssize_t store_sampling_rate(struct gov_attr_set *attr_set, const char *buf,
size_t count);
void gov_update_cpu_data(struct dbs_data *dbs_data);
#endif /* _CPUFREQ_GOVERNOR_H */