27 static void cpufreq_stats_update(struct cpufreq_stats *stats)  in cpufreq_stats_update()  argument
31 	stats->time_in_state[stats->last_index] += cur_time - stats->last_time;  in cpufreq_stats_update()
32 	stats->last_time = cur_time;  in cpufreq_stats_update()
35 static void cpufreq_stats_clear_table(struct cpufreq_stats *stats)  in cpufreq_stats_clear_table()  argument
37 	unsigned int count = stats->max_state;  in cpufreq_stats_clear_table()
39 	spin_lock(&stats->lock);  in cpufreq_stats_clear_table()
40 	memset(stats->time_in_state, 0, count * sizeof(u64));  in cpufreq_stats_clear_table()
41 	memset(stats->trans_table, 0, count * count * sizeof(int));  in cpufreq_stats_clear_table()
42 	stats->last_time = get_jiffies_64();  in cpufreq_stats_clear_table()
43 	stats->total_trans = 0;  in cpufreq_stats_clear_table()
44 	spin_unlock(&stats->lock);  in cpufreq_stats_clear_table()
49 	return sprintf(buf, "%d\n", policy->stats->total_trans);  in show_total_trans()
55 	struct cpufreq_stats *stats = policy->stats;  in show_time_in_state()  local
62 	spin_lock(&stats->lock);  in show_time_in_state()
63 	cpufreq_stats_update(stats);  in show_time_in_state()
64 	spin_unlock(&stats->lock);  in show_time_in_state()
66 	for (i = 0; i < stats->state_num; i++) {  in show_time_in_state()
67 		len += sprintf(buf + len, "%u %llu\n", stats->freq_table[i],  in show_time_in_state()
69 			jiffies_64_to_clock_t(stats->time_in_state[i]));  in show_time_in_state()
79 	cpufreq_stats_clear_table(policy->stats);  in store_reset()
86 	struct cpufreq_stats *stats = policy->stats;  in show_trans_table()  local
95 	for (i = 0; i < stats->state_num; i++) {  in show_trans_table()
99 				stats->freq_table[i]);  in show_trans_table()
106 	for (i = 0; i < stats->state_num; i++) {  in show_trans_table()
111 				stats->freq_table[i]);  in show_trans_table()
113 		for (j = 0; j < stats->state_num; j++) {  in show_trans_table()
117 					stats->trans_table[i*stats->max_state+j]);  in show_trans_table()
144 static int freq_table_get_index(struct cpufreq_stats *stats, unsigned int freq)  in freq_table_get_index()  argument
147 	for (index = 0; index < stats->max_state; index++)  in freq_table_get_index()
148 		if (stats->freq_table[index] == freq)  in freq_table_get_index()
155 	struct cpufreq_stats *stats = policy->stats;  in cpufreq_stats_free_table()  local
158 	if (!stats)  in cpufreq_stats_free_table()
164 	kfree(stats->time_in_state);  in cpufreq_stats_free_table()
165 	kfree(stats);  in cpufreq_stats_free_table()
166 	policy->stats = NULL;  in cpufreq_stats_free_table()
172 	struct cpufreq_stats *stats;  in cpufreq_stats_create_table()  local
181 	if (policy->stats)  in cpufreq_stats_create_table()
184 	stats = kzalloc(sizeof(*stats), GFP_KERNEL);  in cpufreq_stats_create_table()
185 	if (!stats)  in cpufreq_stats_create_table()
193 	stats->time_in_state = kzalloc(alloc_size, GFP_KERNEL);  in cpufreq_stats_create_table()
194 	if (!stats->time_in_state)  in cpufreq_stats_create_table()
197 	stats->freq_table = (unsigned int *)(stats->time_in_state + count);  in cpufreq_stats_create_table()
199 	stats->trans_table = stats->freq_table + count;  in cpufreq_stats_create_table()
201 	stats->max_state = count;  in cpufreq_stats_create_table()
205 		if (freq_table_get_index(stats, pos->frequency) == -1)  in cpufreq_stats_create_table()
206 			stats->freq_table[i++] = pos->frequency;  in cpufreq_stats_create_table()
208 	stats->state_num = i;  in cpufreq_stats_create_table()
209 	stats->last_time = get_jiffies_64();  in cpufreq_stats_create_table()
210 	stats->last_index = freq_table_get_index(stats, policy->cur);  in cpufreq_stats_create_table()
211 	spin_lock_init(&stats->lock);  in cpufreq_stats_create_table()
213 	policy->stats = stats;  in cpufreq_stats_create_table()
219 	policy->stats = NULL;  in cpufreq_stats_create_table()
220 	kfree(stats->time_in_state);  in cpufreq_stats_create_table()
222 	kfree(stats);  in cpufreq_stats_create_table()
228 	struct cpufreq_stats *stats = policy->stats;  in cpufreq_stats_record_transition()  local
231 	if (!stats) {  in cpufreq_stats_record_transition()
236 	old_index = stats->last_index;  in cpufreq_stats_record_transition()
237 	new_index = freq_table_get_index(stats, new_freq);  in cpufreq_stats_record_transition()
243 	spin_lock(&stats->lock);  in cpufreq_stats_record_transition()
244 	cpufreq_stats_update(stats);  in cpufreq_stats_record_transition()
246 	stats->last_index = new_index;  in cpufreq_stats_record_transition()
247 	stats->trans_table[old_index * stats->max_state + new_index]++;  in cpufreq_stats_record_transition()
248 	stats->total_trans++;  in cpufreq_stats_record_transition()
249 	spin_unlock(&stats->lock);  in cpufreq_stats_record_transition()