654 	struct cftype *cft = of_cft(of);  in of_css()  local
664 	if (CGROUP_HAS_SUBSYS_CONFIG && cft->ss)  in of_css()
665 		return rcu_dereference_raw(cgrp->subsys[cft->ss->id]);  in of_css()
1518 static char *cgroup_file_name(struct cgroup *cgrp, const struct cftype *cft,  in cgroup_file_name()  argument
1521 	struct cgroup_subsys *ss = cft->ss;  in cgroup_file_name()
1523 	if (cft->ss && !(cft->flags & CFTYPE_NO_PREFIX) &&  in cgroup_file_name()
1525 		const char *dbg = (cft->flags & CFTYPE_DEBUG) ? ".__DEBUG__." : "";  in cgroup_file_name()
1529 			 cft->name);  in cgroup_file_name()
1531 		strscpy(buf, cft->name, CGROUP_FILE_NAME_MAX);  in cgroup_file_name()
1542 static umode_t cgroup_file_mode(const struct cftype *cft)  in cgroup_file_mode()  argument
1546 	if (cft->read_u64 || cft->read_s64 || cft->seq_show)  in cgroup_file_mode()
1549 	if (cft->write_u64 || cft->write_s64 || cft->write) {  in cgroup_file_mode()
1550 		if (cft->flags & CFTYPE_WORLD_WRITABLE)  in cgroup_file_mode()
1676 static void cgroup_rm_file(struct cgroup *cgrp, const struct cftype *cft)  in cgroup_rm_file()  argument
1682 	if (cft->file_offset) {  in cgroup_rm_file()
1683 		struct cgroup_subsys_state *css = cgroup_css(cgrp, cft->ss);  in cgroup_rm_file()
1684 		struct cgroup_file *cfile = (void *)css + cft->file_offset;  in cgroup_rm_file()
1693 	kernfs_remove_by_name(cgrp->kn, cgroup_file_name(cgrp, cft, name));  in cgroup_rm_file()
3999 	struct cftype *cft = of_cft(of);  in cgroup_file_open()  local
4011 	if (!cft->open)  in cgroup_file_open()
4014 	ret = cft->open(of);  in cgroup_file_open()
4024 	struct cftype *cft = of_cft(of);  in cgroup_file_release()  local
4027 	if (cft->release)  in cgroup_file_release()
4028 		cft->release(of);  in cgroup_file_release()
4038 	struct cftype *cft = of_cft(of);  in cgroup_file_write()  local
4052 	    !(cft->flags & CFTYPE_NS_DELEGATABLE) &&  in cgroup_file_write()
4056 	if (cft->write)  in cgroup_file_write()
4057 		return cft->write(of, buf, nbytes, off);  in cgroup_file_write()
4066 	css = cgroup_css(cgrp, cft->ss);  in cgroup_file_write()
4069 	if (cft->write_u64) {  in cgroup_file_write()
4073 			ret = cft->write_u64(css, cft, v);  in cgroup_file_write()
4074 	} else if (cft->write_s64) {  in cgroup_file_write()
4078 			ret = cft->write_s64(css, cft, v);  in cgroup_file_write()
4088 	struct cftype *cft = of_cft(of);  in cgroup_file_poll()  local
4090 	if (cft->poll)  in cgroup_file_poll()
4091 		return cft->poll(of, pt);  in cgroup_file_poll()
4114 	struct cftype *cft = seq_cft(m);  in cgroup_seqfile_show()  local
4117 	if (cft->seq_show)  in cgroup_seqfile_show()
4118 		return cft->seq_show(m, arg);  in cgroup_seqfile_show()
4120 	if (cft->read_u64)  in cgroup_seqfile_show()
4121 		seq_printf(m, "%llu\n", cft->read_u64(css, cft));  in cgroup_seqfile_show()
4122 	else if (cft->read_s64)  in cgroup_seqfile_show()
4123 		seq_printf(m, "%lld\n", cft->read_s64(css, cft));  in cgroup_seqfile_show()
4171 			   struct cftype *cft)  in cgroup_add_file()  argument
4179 	key = &cft->lockdep_key;  in cgroup_add_file()
4181 	kn = __kernfs_create_file(cgrp->kn, cgroup_file_name(cgrp, cft, name),  in cgroup_add_file()
4182 				  cgroup_file_mode(cft),  in cgroup_add_file()
4184 				  0, cft->kf_ops, cft,  in cgroup_add_file()
4195 	if (cft->file_offset) {  in cgroup_add_file()
4196 		struct cgroup_file *cfile = (void *)css + cft->file_offset;  in cgroup_add_file()
4222 	struct cftype *cft, *cft_end = NULL;  in cgroup_addrm_files()  local
4228 	for (cft = cfts; cft != cft_end && cft->name[0] != '\0'; cft++) {  in cgroup_addrm_files()
4230 		if ((cft->flags & __CFTYPE_ONLY_ON_DFL) && !cgroup_on_dfl(cgrp))  in cgroup_addrm_files()
4232 		if ((cft->flags & __CFTYPE_NOT_ON_DFL) && cgroup_on_dfl(cgrp))  in cgroup_addrm_files()
4234 		if ((cft->flags & CFTYPE_NOT_ON_ROOT) && !cgroup_parent(cgrp))  in cgroup_addrm_files()
4236 		if ((cft->flags & CFTYPE_ONLY_ON_ROOT) && cgroup_parent(cgrp))  in cgroup_addrm_files()
4238 		if ((cft->flags & CFTYPE_DEBUG) && !cgroup_debug)  in cgroup_addrm_files()
4241 			ret = cgroup_add_file(css, cgrp, cft);  in cgroup_addrm_files()
4244 					__func__, cft->name, ret);  in cgroup_addrm_files()
4245 				cft_end = cft;  in cgroup_addrm_files()
4250 			cgroup_rm_file(cgrp, cft);  in cgroup_addrm_files()
4284 	struct cftype *cft;  in cgroup_exit_cftypes()  local
4286 	for (cft = cfts; cft->name[0] != '\0'; cft++) {  in cgroup_exit_cftypes()
4288 		if (cft->max_write_len && cft->max_write_len != PAGE_SIZE)  in cgroup_exit_cftypes()
4289 			kfree(cft->kf_ops);  in cgroup_exit_cftypes()
4290 		cft->kf_ops = NULL;  in cgroup_exit_cftypes()
4291 		cft->ss = NULL;  in cgroup_exit_cftypes()
4294 		cft->flags &= ~(__CFTYPE_ONLY_ON_DFL | __CFTYPE_NOT_ON_DFL |  in cgroup_exit_cftypes()
4301 	struct cftype *cft;  in cgroup_init_cftypes()  local
4304 	for (cft = cfts; cft->name[0] != '\0'; cft++) {  in cgroup_init_cftypes()
4307 		WARN_ON(cft->ss || cft->kf_ops);  in cgroup_init_cftypes()
4309 		if (cft->flags & __CFTYPE_ADDED) {  in cgroup_init_cftypes()
4314 		if (cft->seq_start)  in cgroup_init_cftypes()
4323 		if (cft->max_write_len && cft->max_write_len != PAGE_SIZE) {  in cgroup_init_cftypes()
4329 			kf_ops->atomic_write_len = cft->max_write_len;  in cgroup_init_cftypes()
4332 		cft->kf_ops = kf_ops;  in cgroup_init_cftypes()
4333 		cft->ss = ss;  in cgroup_init_cftypes()
4334 		cft->flags |= __CFTYPE_ADDED;  in cgroup_init_cftypes()
4428 	struct cftype *cft;  in cgroup_add_dfl_cftypes()  local
4430 	for (cft = cfts; cft && cft->name[0] != '\0'; cft++)  in cgroup_add_dfl_cftypes()
4431 		cft->flags |= __CFTYPE_ONLY_ON_DFL;  in cgroup_add_dfl_cftypes()
4445 	struct cftype *cft;  in cgroup_add_legacy_cftypes()  local
4447 	for (cft = cfts; cft && cft->name[0] != '\0'; cft++)  in cgroup_add_legacy_cftypes()
4448 		cft->flags |= __CFTYPE_NOT_ON_DFL;  in cgroup_add_legacy_cftypes()
6988 	struct cftype *cft;  in show_delegatable_files()  local
6991 	for (cft = files; cft && cft->name[0] != '\0'; cft++) {  in show_delegatable_files()
6992 		if (!(cft->flags & CFTYPE_NS_DELEGATABLE))  in show_delegatable_files()
6998 		ret += snprintf(buf + ret, size - ret, "%s\n", cft->name);  in show_delegatable_files()