146 static struct gcov_info *get_node_info(struct gcov_node *node)  in get_node_info()  argument
148 	if (node->num_loaded > 0)  in get_node_info()
149 		return node->loaded_info[0];  in get_node_info()
151 	return node->unloaded_info;  in get_node_info()
158 static struct gcov_info *get_accumulated_info(struct gcov_node *node)  in get_accumulated_info()  argument
163 	if (node->unloaded_info)  in get_accumulated_info()
164 		info = gcov_info_dup(node->unloaded_info);  in get_accumulated_info()
166 		info = gcov_info_dup(node->loaded_info[i++]);  in get_accumulated_info()
169 	for (; i < node->num_loaded; i++)  in get_accumulated_info()
170 		gcov_info_add(info, node->loaded_info[i]);  in get_accumulated_info()
181 	struct gcov_node *node = inode->i_private;  in gcov_seq_open()  local
193 	info = get_accumulated_info(node);  in gcov_seq_open()
241 	struct gcov_node *node;  in get_node_by_name()  local
244 	list_for_each_entry(node, &all_head, all) {  in get_node_by_name()
245 		info = get_node_info(node);  in get_node_by_name()
247 			return node;  in get_node_by_name()
256 static void reset_node(struct gcov_node *node)  in reset_node()  argument
260 	if (node->unloaded_info)  in reset_node()
261 		gcov_info_reset(node->unloaded_info);  in reset_node()
262 	for (i = 0; i < node->num_loaded; i++)  in reset_node()
263 		gcov_info_reset(node->loaded_info[i]);  in reset_node()
266 static void remove_node(struct gcov_node *node);
278 	struct gcov_node *node;  in gcov_seq_write()  local
283 	node = get_node_by_name(gcov_info_filename(info));  in gcov_seq_write()
284 	if (node) {  in gcov_seq_write()
286 		if (node->num_loaded == 0)  in gcov_seq_write()
287 			remove_node(node);  in gcov_seq_write()
289 			reset_node(node);  in gcov_seq_write()
367 static void add_links(struct gcov_node *node, struct dentry *parent)  in add_links()  argument
376 	node->links = kcalloc(num, sizeof(struct dentry *), GFP_KERNEL);  in add_links()
377 	if (!node->links)  in add_links()
381 				gcov_info_filename(get_node_info(node)),  in add_links()
388 		node->links[i] = debugfs_create_symlink(deskew(basename),  in add_links()
390 		if (!node->links[i])  in add_links()
399 		debugfs_remove(node->links[i]);  in add_links()
400 	kfree(node->links);  in add_links()
401 	node->links = NULL;  in add_links()
413 static void init_node(struct gcov_node *node, struct gcov_info *info,  in init_node()  argument
416 	INIT_LIST_HEAD(&node->list);  in init_node()
417 	INIT_LIST_HEAD(&node->children);  in init_node()
418 	INIT_LIST_HEAD(&node->all);  in init_node()
419 	if (node->loaded_info) {  in init_node()
420 		node->loaded_info[0] = info;  in init_node()
421 		node->num_loaded = 1;  in init_node()
423 	node->parent = parent;  in init_node()
425 		strcpy(node->name, name);  in init_node()
435 	struct gcov_node *node;  in new_node()  local
437 	node = kzalloc(sizeof(struct gcov_node) + strlen(name) + 1, GFP_KERNEL);  in new_node()
438 	if (!node)  in new_node()
441 		node->loaded_info = kcalloc(1, sizeof(struct gcov_info *),  in new_node()
443 		if (!node->loaded_info)  in new_node()
446 	init_node(node, info, name, parent);  in new_node()
449 		node->dentry = debugfs_create_file(deskew(node->name), 0600,  in new_node()
450 					parent->dentry, node, &gcov_data_fops);  in new_node()
452 		node->dentry = debugfs_create_dir(node->name, parent->dentry);  in new_node()
453 	if (!node->dentry) {  in new_node()
455 		kfree(node);  in new_node()
459 		add_links(node, parent->dentry);  in new_node()
460 	list_add(&node->list, &parent->children);  in new_node()
461 	list_add(&node->all, &all_head);  in new_node()
463 	return node;  in new_node()
466 	kfree(node);  in new_node()
472 static void remove_links(struct gcov_node *node)  in remove_links()  argument
476 	if (!node->links)  in remove_links()
479 		debugfs_remove(node->links[i]);  in remove_links()
480 	kfree(node->links);  in remove_links()
481 	node->links = NULL;  in remove_links()
488 static void release_node(struct gcov_node *node)  in release_node()  argument
490 	list_del(&node->list);  in release_node()
491 	list_del(&node->all);  in release_node()
492 	debugfs_remove(node->dentry);  in release_node()
493 	remove_links(node);  in release_node()
494 	kfree(node->loaded_info);  in release_node()
495 	if (node->unloaded_info)  in release_node()
496 		gcov_info_free(node->unloaded_info);  in release_node()
497 	kfree(node);  in release_node()
501 static void remove_node(struct gcov_node *node)  in remove_node()  argument
505 	while ((node != &root_node) && list_empty(&node->children)) {  in remove_node()
506 		parent = node->parent;  in remove_node()
507 		release_node(node);  in remove_node()
508 		node = parent;  in remove_node()
519 	struct gcov_node *node;  in get_child_by_name()  local
521 	list_for_each_entry(node, &parent->children, list) {  in get_child_by_name()
522 		if (strcmp(node->name, name) == 0)  in get_child_by_name()
523 			return node;  in get_child_by_name()
536 	struct gcov_node *node;  in reset_write()  local
540 	list_for_each_entry(node, &all_head, all) {  in reset_write()
541 		if (node->num_loaded > 0)  in reset_write()
542 			reset_node(node);  in reset_write()
543 		else if (list_empty(&node->children)) {  in reset_write()
544 			remove_node(node);  in reset_write()
578 	struct gcov_node *node;  in add_node()  local
597 		node = get_child_by_name(parent, curr);  in add_node()
598 		if (!node) {  in add_node()
599 			node = new_node(parent, NULL, curr);  in add_node()
600 			if (!node)  in add_node()
603 		parent = node;  in add_node()
606 	node = new_node(parent, info, curr);  in add_node()
607 	if (!node)  in add_node()
622 static void add_info(struct gcov_node *node, struct gcov_info *info)  in add_info()  argument
625 	int num = node->num_loaded;  in add_info()
638 	memcpy(loaded_info, node->loaded_info,  in add_info()
647 		if (!gcov_info_is_compatible(node->unloaded_info, info)) {  in add_info()
651 			gcov_info_free(node->unloaded_info);  in add_info()
652 			node->unloaded_info = NULL;  in add_info()
659 		if (!gcov_info_is_compatible(node->loaded_info[0], info)) {  in add_info()
667 	kfree(node->loaded_info);  in add_info()
668 	node->loaded_info = loaded_info;  in add_info()
669 	node->num_loaded = num + 1;  in add_info()
675 static int get_info_index(struct gcov_node *node, struct gcov_info *info)  in get_info_index()  argument
679 	for (i = 0; i < node->num_loaded; i++) {  in get_info_index()
680 		if (node->loaded_info[i] == info)  in get_info_index()
689 static void save_info(struct gcov_node *node, struct gcov_info *info)  in save_info()  argument
691 	if (node->unloaded_info)  in save_info()
692 		gcov_info_add(node->unloaded_info, info);  in save_info()
694 		node->unloaded_info = gcov_info_dup(info);  in save_info()
695 		if (!node->unloaded_info) {  in save_info()
707 static void remove_info(struct gcov_node *node, struct gcov_info *info)  in remove_info()  argument
711 	i = get_info_index(node, info);  in remove_info()
718 		save_info(node, info);  in remove_info()
720 	node->loaded_info[i] = node->loaded_info[node->num_loaded - 1];  in remove_info()
721 	node->num_loaded--;  in remove_info()
722 	if (node->num_loaded > 0)  in remove_info()
725 	kfree(node->loaded_info);  in remove_info()
726 	node->loaded_info = NULL;  in remove_info()
727 	node->num_loaded = 0;  in remove_info()
728 	if (!node->unloaded_info)  in remove_info()
729 		remove_node(node);  in remove_info()
738 	struct gcov_node *node;  in gcov_event()  local
741 	node = get_node_by_name(gcov_info_filename(info));  in gcov_event()
744 		if (node)  in gcov_event()
745 			add_info(node, info);  in gcov_event()
750 		if (node)  in gcov_event()
751 			remove_info(node, info);  in gcov_event()