671 static void update_time_in_state(struct cooling_dev_stats *stats)  in update_time_in_state()  argument
675 	delta = ktime_sub(now, stats->last_time);  in update_time_in_state()
676 	stats->time_in_state[stats->state] =  in update_time_in_state()
677 		ktime_add(stats->time_in_state[stats->state], delta);  in update_time_in_state()
678 	stats->last_time = now;  in update_time_in_state()
684 	struct cooling_dev_stats *stats = cdev->stats;  in thermal_cooling_device_stats_update()  local
686 	if (!stats)  in thermal_cooling_device_stats_update()
689 	spin_lock(&stats->lock);  in thermal_cooling_device_stats_update()
691 	if (stats->state == new_state)  in thermal_cooling_device_stats_update()
694 	update_time_in_state(stats);  in thermal_cooling_device_stats_update()
695 	stats->trans_table[stats->state * stats->max_states + new_state]++;  in thermal_cooling_device_stats_update()
696 	stats->state = new_state;  in thermal_cooling_device_stats_update()
697 	stats->total_trans++;  in thermal_cooling_device_stats_update()
700 	spin_unlock(&stats->lock);  in thermal_cooling_device_stats_update()
707 	struct cooling_dev_stats *stats = cdev->stats;  in total_trans_show()  local
710 	spin_lock(&stats->lock);  in total_trans_show()
711 	ret = sprintf(buf, "%u\n", stats->total_trans);  in total_trans_show()
712 	spin_unlock(&stats->lock);  in total_trans_show()
722 	struct cooling_dev_stats *stats = cdev->stats;  in time_in_state_ms_show()  local
726 	spin_lock(&stats->lock);  in time_in_state_ms_show()
727 	update_time_in_state(stats);  in time_in_state_ms_show()
729 	for (i = 0; i < stats->max_states; i++) {  in time_in_state_ms_show()
731 			       ktime_to_ms(stats->time_in_state[i]));  in time_in_state_ms_show()
733 	spin_unlock(&stats->lock);  in time_in_state_ms_show()
743 	struct cooling_dev_stats *stats = cdev->stats;  in reset_store()  local
744 	int i, states = stats->max_states;  in reset_store()
746 	spin_lock(&stats->lock);  in reset_store()
748 	stats->total_trans = 0;  in reset_store()
749 	stats->last_time = ktime_get();  in reset_store()
750 	memset(stats->trans_table, 0,  in reset_store()
751 	       states * states * sizeof(*stats->trans_table));  in reset_store()
753 	for (i = 0; i < stats->max_states; i++)  in reset_store()
754 		stats->time_in_state[i] = ktime_set(0, 0);  in reset_store()
756 	spin_unlock(&stats->lock);  in reset_store()
765 	struct cooling_dev_stats *stats = cdev->stats;  in trans_table_show()  local
771 	for (i = 0; i < stats->max_states; i++) {  in trans_table_show()
781 	for (i = 0; i < stats->max_states; i++) {  in trans_table_show()
787 		for (j = 0; j < stats->max_states; j++) {  in trans_table_show()
791 				stats->trans_table[i * stats->max_states + j]);  in trans_table_show()
826 	struct cooling_dev_stats *stats;  in cooling_device_stats_setup()  local
841 	var = sizeof(*stats);  in cooling_device_stats_setup()
842 	var += sizeof(*stats->time_in_state) * states;  in cooling_device_stats_setup()
843 	var += sizeof(*stats->trans_table) * states * states;  in cooling_device_stats_setup()
845 	stats = kzalloc(var, GFP_KERNEL);  in cooling_device_stats_setup()
846 	if (!stats)  in cooling_device_stats_setup()
849 	stats->time_in_state = (ktime_t *)(stats + 1);  in cooling_device_stats_setup()
850 	stats->trans_table = (unsigned int *)(stats->time_in_state + states);  in cooling_device_stats_setup()
851 	cdev->stats = stats;  in cooling_device_stats_setup()
852 	stats->last_time = ktime_get();  in cooling_device_stats_setup()
853 	stats->max_states = states;  in cooling_device_stats_setup()
855 	spin_lock_init(&stats->lock);  in cooling_device_stats_setup()
867 	kfree(cdev->stats);  in cooling_device_stats_destroy()
868 	cdev->stats = NULL;  in cooling_device_stats_destroy()