105 	struct user_event_group *group;  member
133 	struct user_event_group *group;  member
149 static int user_event_parse(struct user_event_group *group, char *name,
172 static void user_event_group_destroy(struct user_event_group *group)  in user_event_group_destroy()  argument
174 	if (group->register_page_data)  in user_event_group_destroy()
175 		set_page_reservations(group->register_page_data, false);  in user_event_group_destroy()
177 	if (group->pages)  in user_event_group_destroy()
178 		__free_pages(group->pages, MAX_PAGE_ORDER);  in user_event_group_destroy()
180 	kfree(group->system_name);  in user_event_group_destroy()
181 	kfree(group);  in user_event_group_destroy()
221 	struct user_event_group *group = NULL;  in current_user_event_group()  local
224 		group = user_event_group_from_user_ns(user_ns);  in current_user_event_group()
226 		if (group)  in current_user_event_group()
232 	return group;  in current_user_event_group()
238 	struct user_event_group *group;  in user_event_group_create()  local
240 	group = kzalloc(sizeof(*group), GFP_KERNEL);  in user_event_group_create()
242 	if (!group)  in user_event_group_create()
245 	group->system_name = user_event_group_system_name(user_ns);  in user_event_group_create()
247 	if (!group->system_name)  in user_event_group_create()
250 	group->pages = alloc_pages(GFP_KERNEL | __GFP_ZERO, MAX_PAGE_ORDER);  in user_event_group_create()
252 	if (!group->pages)  in user_event_group_create()
255 	group->register_page_data = page_address(group->pages);  in user_event_group_create()
257 	set_page_reservations(group->register_page_data, true);  in user_event_group_create()
260 	bitmap_zero(group->page_bitmap, MAX_EVENTS);  in user_event_group_create()
261 	set_bit(0, group->page_bitmap);  in user_event_group_create()
263 	mutex_init(&group->reg_mutex);  in user_event_group_create()
264 	hash_init(group->register_table);  in user_event_group_create()
266 	return group;  in user_event_group_create()
268 	if (group)  in user_event_group_create()
269 		user_event_group_destroy(group);  in user_event_group_create()
279 	user->group->register_page_data[MAP_STATUS_BYTE(i)] |= MAP_STATUS_MASK(i);  in user_event_register_set()
287 	user->group->register_page_data[MAP_STATUS_BYTE(i)] &= ~MAP_STATUS_MASK(i);  in user_event_register_clear()
331 static int user_event_parse_cmd(struct user_event_group *group,  in user_event_parse_cmd()  argument
346 	return user_event_parse(group, name, args, flags, newuser);  in user_event_parse_cmd()
837 	clear_bit(user->index, user->group->page_bitmap);  in destroy_user_event()
848 static struct user_event *find_user_event(struct user_event_group *group,  in find_user_event()  argument
856 	hash_for_each_possible(group->register_table, user, node, key)  in find_user_event()
1088 	struct user_event_group *group;  in user_event_create()  local
1104 	group = current_user_event_group();  in user_event_create()
1106 	if (!group) {  in user_event_create()
1111 	mutex_lock(&group->reg_mutex);  in user_event_create()
1113 	ret = user_event_parse_cmd(group, name, &user);  in user_event_create()
1118 	mutex_unlock(&group->reg_mutex);  in user_event_create()
1272 static int user_event_parse(struct user_event_group *group, char *name,  in user_event_parse()  argument
1283 	user = find_user_event(group, name, &key);  in user_event_parse()
1296 	index = find_first_zero_bit(group->page_bitmap, MAX_EVENTS);  in user_event_parse()
1310 	user->group = group;  in user_event_parse()
1329 	user->class.system = group->system_name;  in user_event_parse()
1353 	set_bit(user->index, group->page_bitmap);  in user_event_parse()
1354 	hash_add(group->register_table, &user->node, key);  in user_event_parse()
1373 static int delete_user_event(struct user_event_group *group, char *name)  in delete_user_event()  argument
1376 	struct user_event *user = find_user_event(group, name, &key);  in delete_user_event()
1470 	struct user_event_group *group;  in user_events_open()  local
1473 	group = current_user_event_group();  in user_events_open()
1475 	if (!group)  in user_events_open()
1483 	info->group = group;  in user_events_open()
1514 	struct user_event_group *group = info->group;  in user_events_ref_add()  local
1519 					 lockdep_is_held(&group->reg_mutex));  in user_events_ref_add()
1604 	ret = user_event_parse_cmd(info->group, name, &user);  in user_events_ioctl_reg()
1643 	ret = delete_user_event(info->group, name);  in user_events_ioctl_del()
1658 	struct user_event_group *group = info->group;  in user_events_ioctl()  local
1663 		mutex_lock(&group->reg_mutex);  in user_events_ioctl()
1665 		mutex_unlock(&group->reg_mutex);  in user_events_ioctl()
1669 		mutex_lock(&group->reg_mutex);  in user_events_ioctl()
1671 		mutex_unlock(&group->reg_mutex);  in user_events_ioctl()
1684 	struct user_event_group *group;  in user_events_release()  local
1692 	group = info->group;  in user_events_release()
1698 	mutex_lock(&group->reg_mutex);  in user_events_release()
1719 	mutex_unlock(&group->reg_mutex);  in user_events_release()
1751 	struct user_event_group *group = user_status_group(file);  in user_status_mmap()  local
1757 	if (!group)  in user_status_mmap()
1760 	pages = group->register_page_data;  in user_status_mmap()
1787 	struct user_event_group *group = m->private;  in user_seq_show()  local
1792 	if (!group)  in user_seq_show()
1795 	mutex_lock(&group->reg_mutex);  in user_seq_show()
1797 	hash_for_each(group->register_table, i, user, node) {  in user_seq_show()
1821 	mutex_unlock(&group->reg_mutex);  in user_seq_show()
1840 	struct user_event_group *group;  in user_status_open()  local
1843 	group = current_user_event_group();  in user_status_open()
1845 	if (!group)  in user_status_open()
1854 		m->private = group;  in user_status_open()