30 static void cpufreq_stats_update(struct cpufreq_stats *stats)  in cpufreq_stats_update()  argument
35 	stats->time_in_state[stats->last_index] += cur_time - stats->last_time;  in cpufreq_stats_update()
36 	stats->last_time = cur_time;  in cpufreq_stats_update()
40 static void cpufreq_stats_clear_table(struct cpufreq_stats *stats)  in cpufreq_stats_clear_table()  argument
42 	unsigned int count = stats->max_state;  in cpufreq_stats_clear_table()
44 	memset(stats->time_in_state, 0, count * sizeof(u64));  in cpufreq_stats_clear_table()
45 	memset(stats->trans_table, 0, count * count * sizeof(int));  in cpufreq_stats_clear_table()
46 	stats->last_time = get_jiffies_64();  in cpufreq_stats_clear_table()
47 	stats->total_trans = 0;  in cpufreq_stats_clear_table()
52 	return sprintf(buf, "%d\n", policy->stats->total_trans);  in show_total_trans()
57 	struct cpufreq_stats *stats = policy->stats;  in show_time_in_state()  local
64 	cpufreq_stats_update(stats);  in show_time_in_state()
65 	for (i = 0; i < stats->state_num; i++) {  in show_time_in_state()
66 		len += sprintf(buf + len, "%u %llu\n", stats->freq_table[i],  in show_time_in_state()
68 			jiffies_64_to_clock_t(stats->time_in_state[i]));  in show_time_in_state()
77 	cpufreq_stats_clear_table(policy->stats);  in store_reset()
83 	struct cpufreq_stats *stats = policy->stats;  in show_trans_table()  local
92 	for (i = 0; i < stats->state_num; i++) {  in show_trans_table()
96 				stats->freq_table[i]);  in show_trans_table()
103 	for (i = 0; i < stats->state_num; i++) {  in show_trans_table()
108 				stats->freq_table[i]);  in show_trans_table()
110 		for (j = 0; j < stats->state_num; j++) {  in show_trans_table()
114 					stats->trans_table[i*stats->max_state+j]);  in show_trans_table()
145 static int freq_table_get_index(struct cpufreq_stats *stats, unsigned int freq)  in freq_table_get_index()  argument
148 	for (index = 0; index < stats->max_state; index++)  in freq_table_get_index()
149 		if (stats->freq_table[index] == freq)  in freq_table_get_index()
156 	struct cpufreq_stats *stats = policy->stats;  in cpufreq_stats_free_table()  local
159 	if (!stats)  in cpufreq_stats_free_table()
165 	kfree(stats->time_in_state);  in cpufreq_stats_free_table()
166 	kfree(stats);  in cpufreq_stats_free_table()
167 	policy->stats = NULL;  in cpufreq_stats_free_table()
173 	struct cpufreq_stats *stats;  in cpufreq_stats_create_table()  local
182 	if (policy->stats)  in cpufreq_stats_create_table()
185 	stats = kzalloc(sizeof(*stats), GFP_KERNEL);  in cpufreq_stats_create_table()
186 	if (!stats)  in cpufreq_stats_create_table()
194 	stats->time_in_state = kzalloc(alloc_size, GFP_KERNEL);  in cpufreq_stats_create_table()
195 	if (!stats->time_in_state)  in cpufreq_stats_create_table()
198 	stats->freq_table = (unsigned int *)(stats->time_in_state + count);  in cpufreq_stats_create_table()
200 	stats->trans_table = stats->freq_table + count;  in cpufreq_stats_create_table()
202 	stats->max_state = count;  in cpufreq_stats_create_table()
206 		if (freq_table_get_index(stats, pos->frequency) == -1)  in cpufreq_stats_create_table()
207 			stats->freq_table[i++] = pos->frequency;  in cpufreq_stats_create_table()
209 	stats->state_num = i;  in cpufreq_stats_create_table()
210 	stats->last_time = get_jiffies_64();  in cpufreq_stats_create_table()
211 	stats->last_index = freq_table_get_index(stats, policy->cur);  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 	cpufreq_stats_update(stats);  in cpufreq_stats_record_transition()
245 	stats->last_index = new_index;  in cpufreq_stats_record_transition()
246 	stats->trans_table[old_index * stats->max_state + new_index]++;  in cpufreq_stats_record_transition()
247 	stats->total_trans++;  in cpufreq_stats_record_transition()