+}
+EXPORT_SYMBOL_GPL(gov_update_cpu_data);
+
+static inline struct dbs_data *to_dbs_data(struct kobject *kobj)
+{
+ return container_of(kobj, struct dbs_data, kobj);
+}
+
+static inline struct governor_attr *to_gov_attr(struct attribute *attr)
+{
+ return container_of(attr, struct governor_attr, attr);
+}
+
+static ssize_t governor_show(struct kobject *kobj, struct attribute *attr,
+ char *buf)
+{
+ struct dbs_data *dbs_data = to_dbs_data(kobj);
+ struct governor_attr *gattr = to_gov_attr(attr);
+ int ret = -EIO;
+
+ if (gattr->show)
+ ret = gattr->show(dbs_data, buf);
+
+ return ret;
+}
+
+static ssize_t governor_store(struct kobject *kobj, struct attribute *attr,
+ const char *buf, size_t count)
+{
+ struct dbs_data *dbs_data = to_dbs_data(kobj);
+ struct governor_attr *gattr = to_gov_attr(attr);
+ int ret = -EIO;
+
+ mutex_lock(&dbs_data->mutex);
+
+ if (dbs_data->usage_count && gattr->store)
+ ret = gattr->store(dbs_data, buf, count);
+
+ mutex_unlock(&dbs_data->mutex);
+
+ return ret;
+}
+
+/*
+ * Sysfs Ops for accessing governor attributes.
+ *
+ * All show/store invocations for governor specific sysfs attributes, will first
+ * call the below show/store callbacks and the attribute specific callback will
+ * be called from within it.
+ */
+static const struct sysfs_ops governor_sysfs_ops = {
+ .show = governor_show,
+ .store = governor_store,
+};
+
+unsigned int dbs_update(struct cpufreq_policy *policy)
+{
+ struct policy_dbs_info *policy_dbs = policy->governor_data;
+ struct dbs_data *dbs_data = policy_dbs->dbs_data;
+ unsigned int ignore_nice = dbs_data->ignore_nice_load;
+ unsigned int max_load = 0;
+ unsigned int sampling_rate, io_busy, j;
+
+ /*
+ * Sometimes governors may use an additional multiplier to increase
+ * sample delays temporarily. Apply that multiplier to sampling_rate
+ * so as to keep the wake-up-from-idle detection logic a bit
+ * conservative.
+ */
+ sampling_rate = dbs_data->sampling_rate * policy_dbs->rate_mult;
+ /*
+ * For the purpose of ondemand, waiting for disk IO is an indication
+ * that you're performance critical, and not that the system is actually
+ * idle, so do not add the iowait time to the CPU idle time then.
+ */
+ io_busy = dbs_data->io_is_busy;