567 	struct cftype *cft = of_cft(of);  in of_css()  local
577 	if (cft->ss)  in of_css()
578 		return rcu_dereference_raw(cgrp->subsys[cft->ss->id]);  in of_css()
1395 static char *cgroup_file_name(struct cgroup *cgrp, const struct cftype *cft,  in cgroup_file_name()  argument
1398 	struct cgroup_subsys *ss = cft->ss;  in cgroup_file_name()
1400 	if (cft->ss && !(cft->flags & CFTYPE_NO_PREFIX) &&  in cgroup_file_name()
1404 			 cft->name);  in cgroup_file_name()
1406 		strscpy(buf, cft->name, CGROUP_FILE_NAME_MAX);  in cgroup_file_name()
1416 static umode_t cgroup_file_mode(const struct cftype *cft)  in cgroup_file_mode()  argument
1420 	if (cft->read_u64 || cft->read_s64 || cft->seq_show)  in cgroup_file_mode()
1423 	if (cft->write_u64 || cft->write_s64 || cft->write) {  in cgroup_file_mode()
1424 		if (cft->flags & CFTYPE_WORLD_WRITABLE)  in cgroup_file_mode()
1550 static void cgroup_rm_file(struct cgroup *cgrp, const struct cftype *cft)  in cgroup_rm_file()  argument
1556 	if (cft->file_offset) {  in cgroup_rm_file()
1557 		struct cgroup_subsys_state *css = cgroup_css(cgrp, cft->ss);  in cgroup_rm_file()
1558 		struct cgroup_file *cfile = (void *)css + cft->file_offset;  in cgroup_rm_file()
1567 	kernfs_remove_by_name(cgrp->kn, cgroup_file_name(cgrp, cft, name));  in cgroup_rm_file()
3421 	struct cftype *cft = of->kn->priv;  in cgroup_file_open()  local
3423 	if (cft->open)  in cgroup_file_open()
3424 		return cft->open(of);  in cgroup_file_open()
3430 	struct cftype *cft = of->kn->priv;  in cgroup_file_release()  local
3432 	if (cft->release)  in cgroup_file_release()
3433 		cft->release(of);  in cgroup_file_release()
3441 	struct cftype *cft = of->kn->priv;  in cgroup_file_write()  local
3452 	    !(cft->flags & CFTYPE_NS_DELEGATABLE) &&  in cgroup_file_write()
3456 	if (cft->write)  in cgroup_file_write()
3457 		return cft->write(of, buf, nbytes, off);  in cgroup_file_write()
3466 	css = cgroup_css(cgrp, cft->ss);  in cgroup_file_write()
3469 	if (cft->write_u64) {  in cgroup_file_write()
3473 			ret = cft->write_u64(css, cft, v);  in cgroup_file_write()
3474 	} else if (cft->write_s64) {  in cgroup_file_write()
3478 			ret = cft->write_s64(css, cft, v);  in cgroup_file_write()
3504 	struct cftype *cft = seq_cft(m);  in cgroup_seqfile_show()  local
3507 	if (cft->seq_show)  in cgroup_seqfile_show()
3508 		return cft->seq_show(m, arg);  in cgroup_seqfile_show()
3510 	if (cft->read_u64)  in cgroup_seqfile_show()
3511 		seq_printf(m, "%llu\n", cft->read_u64(css, cft));  in cgroup_seqfile_show()
3512 	else if (cft->read_s64)  in cgroup_seqfile_show()
3513 		seq_printf(m, "%lld\n", cft->read_s64(css, cft));  in cgroup_seqfile_show()
3559 			   struct cftype *cft)  in cgroup_add_file()  argument
3567 	key = &cft->lockdep_key;  in cgroup_add_file()
3569 	kn = __kernfs_create_file(cgrp->kn, cgroup_file_name(cgrp, cft, name),  in cgroup_add_file()
3570 				  cgroup_file_mode(cft),  in cgroup_add_file()
3572 				  0, cft->kf_ops, cft,  in cgroup_add_file()
3583 	if (cft->file_offset) {  in cgroup_add_file()
3584 		struct cgroup_file *cfile = (void *)css + cft->file_offset;  in cgroup_add_file()
3610 	struct cftype *cft, *cft_end = NULL;  in cgroup_addrm_files()  local
3616 	for (cft = cfts; cft != cft_end && cft->name[0] != '\0'; cft++) {  in cgroup_addrm_files()
3618 		if ((cft->flags & __CFTYPE_ONLY_ON_DFL) && !cgroup_on_dfl(cgrp))  in cgroup_addrm_files()
3620 		if ((cft->flags & __CFTYPE_NOT_ON_DFL) && cgroup_on_dfl(cgrp))  in cgroup_addrm_files()
3622 		if ((cft->flags & CFTYPE_NOT_ON_ROOT) && !cgroup_parent(cgrp))  in cgroup_addrm_files()
3624 		if ((cft->flags & CFTYPE_ONLY_ON_ROOT) && cgroup_parent(cgrp))  in cgroup_addrm_files()
3628 			ret = cgroup_add_file(css, cgrp, cft);  in cgroup_addrm_files()
3631 					__func__, cft->name, ret);  in cgroup_addrm_files()
3632 				cft_end = cft;  in cgroup_addrm_files()
3637 			cgroup_rm_file(cgrp, cft);  in cgroup_addrm_files()
3671 	struct cftype *cft;  in cgroup_exit_cftypes()  local
3673 	for (cft = cfts; cft->name[0] != '\0'; cft++) {  in cgroup_exit_cftypes()
3675 		if (cft->max_write_len && cft->max_write_len != PAGE_SIZE)  in cgroup_exit_cftypes()
3676 			kfree(cft->kf_ops);  in cgroup_exit_cftypes()
3677 		cft->kf_ops = NULL;  in cgroup_exit_cftypes()
3678 		cft->ss = NULL;  in cgroup_exit_cftypes()
3681 		cft->flags &= ~(__CFTYPE_ONLY_ON_DFL | __CFTYPE_NOT_ON_DFL);  in cgroup_exit_cftypes()
3687 	struct cftype *cft;  in cgroup_init_cftypes()  local
3689 	for (cft = cfts; cft->name[0] != '\0'; cft++) {  in cgroup_init_cftypes()
3692 		WARN_ON(cft->ss || cft->kf_ops);  in cgroup_init_cftypes()
3694 		if (cft->seq_start)  in cgroup_init_cftypes()
3703 		if (cft->max_write_len && cft->max_write_len != PAGE_SIZE) {  in cgroup_init_cftypes()
3709 			kf_ops->atomic_write_len = cft->max_write_len;  in cgroup_init_cftypes()
3712 		cft->kf_ops = kf_ops;  in cgroup_init_cftypes()
3713 		cft->ss = ss;  in cgroup_init_cftypes()
3802 	struct cftype *cft;  in cgroup_add_dfl_cftypes()  local
3804 	for (cft = cfts; cft && cft->name[0] != '\0'; cft++)  in cgroup_add_dfl_cftypes()
3805 		cft->flags |= __CFTYPE_ONLY_ON_DFL;  in cgroup_add_dfl_cftypes()
3819 	struct cftype *cft;  in cgroup_add_legacy_cftypes()  local
3821 	for (cft = cfts; cft && cft->name[0] != '\0'; cft++)  in cgroup_add_legacy_cftypes()
3822 		cft->flags |= __CFTYPE_NOT_ON_DFL;  in cgroup_add_legacy_cftypes()
5928 	struct cftype *cft;  in show_delegatable_files()  local
5931 	for (cft = files; cft && cft->name[0] != '\0'; cft++) {  in show_delegatable_files()
5932 		if (!(cft->flags & CFTYPE_NS_DELEGATABLE))  in show_delegatable_files()
5938 		ret += snprintf(buf + ret, size - ret, "%s\n", cft->name);  in show_delegatable_files()