652 	struct cftype *cft = of_cft(of);  in of_css()  local
662 	if (CGROUP_HAS_SUBSYS_CONFIG && cft->ss)  in of_css()
663 		return rcu_dereference_raw(cgrp->subsys[cft->ss->id]);  in of_css()
1526 static char *cgroup_file_name(struct cgroup *cgrp, const struct cftype *cft,  in cgroup_file_name()  argument
1529 	struct cgroup_subsys *ss = cft->ss;  in cgroup_file_name()
1531 	if (cft->ss && !(cft->flags & CFTYPE_NO_PREFIX) &&  in cgroup_file_name()
1533 		const char *dbg = (cft->flags & CFTYPE_DEBUG) ? ".__DEBUG__." : "";  in cgroup_file_name()
1537 			 cft->name);  in cgroup_file_name()
1539 		strscpy(buf, cft->name, CGROUP_FILE_NAME_MAX);  in cgroup_file_name()
1550 static umode_t cgroup_file_mode(const struct cftype *cft)  in cgroup_file_mode()  argument
1554 	if (cft->read_u64 || cft->read_s64 || cft->seq_show)  in cgroup_file_mode()
1557 	if (cft->write_u64 || cft->write_s64 || cft->write) {  in cgroup_file_mode()
1558 		if (cft->flags & CFTYPE_WORLD_WRITABLE)  in cgroup_file_mode()
1684 static void cgroup_rm_file(struct cgroup *cgrp, const struct cftype *cft)  in cgroup_rm_file()  argument
1690 	if (cft->file_offset) {  in cgroup_rm_file()
1691 		struct cgroup_subsys_state *css = cgroup_css(cgrp, cft->ss);  in cgroup_rm_file()
1692 		struct cgroup_file *cfile = (void *)css + cft->file_offset;  in cgroup_rm_file()
1701 	kernfs_remove_by_name(cgrp->kn, cgroup_file_name(cgrp, cft, name));  in cgroup_rm_file()
4123 	struct cftype *cft = of_cft(of);  in cgroup_file_open()  local
4135 	if (!cft->open)  in cgroup_file_open()
4138 	ret = cft->open(of);  in cgroup_file_open()
4148 	struct cftype *cft = of_cft(of);  in cgroup_file_release()  local
4151 	if (cft->release)  in cgroup_file_release()
4152 		cft->release(of);  in cgroup_file_release()
4162 	struct cftype *cft = of_cft(of);  in cgroup_file_write()  local
4176 	    !(cft->flags & CFTYPE_NS_DELEGATABLE) &&  in cgroup_file_write()
4180 	if (cft->write)  in cgroup_file_write()
4181 		return cft->write(of, buf, nbytes, off);  in cgroup_file_write()
4190 	css = cgroup_css(cgrp, cft->ss);  in cgroup_file_write()
4193 	if (cft->write_u64) {  in cgroup_file_write()
4197 			ret = cft->write_u64(css, cft, v);  in cgroup_file_write()
4198 	} else if (cft->write_s64) {  in cgroup_file_write()
4202 			ret = cft->write_s64(css, cft, v);  in cgroup_file_write()
4212 	struct cftype *cft = of_cft(of);  in cgroup_file_poll()  local
4214 	if (cft->poll)  in cgroup_file_poll()
4215 		return cft->poll(of, pt);  in cgroup_file_poll()
4238 	struct cftype *cft = seq_cft(m);  in cgroup_seqfile_show()  local
4241 	if (cft->seq_show)  in cgroup_seqfile_show()
4242 		return cft->seq_show(m, arg);  in cgroup_seqfile_show()
4244 	if (cft->read_u64)  in cgroup_seqfile_show()
4245 		seq_printf(m, "%llu\n", cft->read_u64(css, cft));  in cgroup_seqfile_show()
4246 	else if (cft->read_s64)  in cgroup_seqfile_show()
4247 		seq_printf(m, "%lld\n", cft->read_s64(css, cft));  in cgroup_seqfile_show()
4281 			   struct cftype *cft)  in cgroup_add_file()  argument
4288 	key = &cft->lockdep_key;  in cgroup_add_file()
4290 	kn = __kernfs_create_file(cgrp->kn, cgroup_file_name(cgrp, cft, name),  in cgroup_add_file()
4291 				  cgroup_file_mode(cft),  in cgroup_add_file()
4293 				  0, cft->kf_ops, cft,  in cgroup_add_file()
4298 	if (cft->file_offset) {  in cgroup_add_file()
4299 		struct cgroup_file *cfile = (void *)css + cft->file_offset;  in cgroup_add_file()
4325 	struct cftype *cft, *cft_end = NULL;  in cgroup_addrm_files()  local
4331 	for (cft = cfts; cft != cft_end && cft->name[0] != '\0'; cft++) {  in cgroup_addrm_files()
4333 		if ((cft->flags & __CFTYPE_ONLY_ON_DFL) && !cgroup_on_dfl(cgrp))  in cgroup_addrm_files()
4335 		if ((cft->flags & __CFTYPE_NOT_ON_DFL) && cgroup_on_dfl(cgrp))  in cgroup_addrm_files()
4337 		if ((cft->flags & CFTYPE_NOT_ON_ROOT) && !cgroup_parent(cgrp))  in cgroup_addrm_files()
4339 		if ((cft->flags & CFTYPE_ONLY_ON_ROOT) && cgroup_parent(cgrp))  in cgroup_addrm_files()
4341 		if ((cft->flags & CFTYPE_DEBUG) && !cgroup_debug)  in cgroup_addrm_files()
4344 			ret = cgroup_add_file(css, cgrp, cft);  in cgroup_addrm_files()
4347 					__func__, cft->name, ret);  in cgroup_addrm_files()
4348 				cft_end = cft;  in cgroup_addrm_files()
4353 			cgroup_rm_file(cgrp, cft);  in cgroup_addrm_files()
4387 	struct cftype *cft;  in cgroup_exit_cftypes()  local
4389 	for (cft = cfts; cft->name[0] != '\0'; cft++) {  in cgroup_exit_cftypes()
4391 		if (cft->max_write_len && cft->max_write_len != PAGE_SIZE)  in cgroup_exit_cftypes()
4392 			kfree(cft->kf_ops);  in cgroup_exit_cftypes()
4393 		cft->kf_ops = NULL;  in cgroup_exit_cftypes()
4394 		cft->ss = NULL;  in cgroup_exit_cftypes()
4397 		cft->flags &= ~(__CFTYPE_ONLY_ON_DFL | __CFTYPE_NOT_ON_DFL |  in cgroup_exit_cftypes()
4404 	struct cftype *cft;  in cgroup_init_cftypes()  local
4407 	for (cft = cfts; cft->name[0] != '\0'; cft++) {  in cgroup_init_cftypes()
4410 		WARN_ON(cft->ss || cft->kf_ops);  in cgroup_init_cftypes()
4412 		if (cft->flags & __CFTYPE_ADDED) {  in cgroup_init_cftypes()
4417 		if (cft->seq_start)  in cgroup_init_cftypes()
4426 		if (cft->max_write_len && cft->max_write_len != PAGE_SIZE) {  in cgroup_init_cftypes()
4432 			kf_ops->atomic_write_len = cft->max_write_len;  in cgroup_init_cftypes()
4435 		cft->kf_ops = kf_ops;  in cgroup_init_cftypes()
4436 		cft->ss = ss;  in cgroup_init_cftypes()
4437 		cft->flags |= __CFTYPE_ADDED;  in cgroup_init_cftypes()
4528 	struct cftype *cft;  in cgroup_add_dfl_cftypes()  local
4530 	for (cft = cfts; cft && cft->name[0] != '\0'; cft++)  in cgroup_add_dfl_cftypes()
4531 		cft->flags |= __CFTYPE_ONLY_ON_DFL;  in cgroup_add_dfl_cftypes()
4545 	struct cftype *cft;  in cgroup_add_legacy_cftypes()  local
4547 	for (cft = cfts; cft && cft->name[0] != '\0'; cft++)  in cgroup_add_legacy_cftypes()
4548 		cft->flags |= __CFTYPE_NOT_ON_DFL;  in cgroup_add_legacy_cftypes()
7151 	struct cftype *cft;  in show_delegatable_files()  local
7154 	for (cft = files; cft && cft->name[0] != '\0'; cft++) {  in show_delegatable_files()
7155 		if (!(cft->flags & CFTYPE_NS_DELEGATABLE))  in show_delegatable_files()
7161 		ret += snprintf(buf + ret, size - ret, "%s\n", cft->name);  in show_delegatable_files()