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()
1487 static char *cgroup_file_name(struct cgroup *cgrp, const struct cftype *cft,  in cgroup_file_name()  argument
1490 	struct cgroup_subsys *ss = cft->ss;  in cgroup_file_name()
1492 	if (cft->ss && !(cft->flags & CFTYPE_NO_PREFIX) &&  in cgroup_file_name()
1494 		const char *dbg = (cft->flags & CFTYPE_DEBUG) ? ".__DEBUG__." : "";  in cgroup_file_name()
1498 			 cft->name);  in cgroup_file_name()
1500 		strscpy(buf, cft->name, CGROUP_FILE_NAME_MAX);  in cgroup_file_name()
1511 static umode_t cgroup_file_mode(const struct cftype *cft)  in cgroup_file_mode()  argument
1515 	if (cft->read_u64 || cft->read_s64 || cft->seq_show)  in cgroup_file_mode()
1518 	if (cft->write_u64 || cft->write_s64 || cft->write) {  in cgroup_file_mode()
1519 		if (cft->flags & CFTYPE_WORLD_WRITABLE)  in cgroup_file_mode()
1645 static void cgroup_rm_file(struct cgroup *cgrp, const struct cftype *cft)  in cgroup_rm_file()  argument
1651 	if (cft->file_offset) {  in cgroup_rm_file()
1652 		struct cgroup_subsys_state *css = cgroup_css(cgrp, cft->ss);  in cgroup_rm_file()
1653 		struct cgroup_file *cfile = (void *)css + cft->file_offset;  in cgroup_rm_file()
1662 	kernfs_remove_by_name(cgrp->kn, cgroup_file_name(cgrp, cft, name));  in cgroup_rm_file()
3790 	struct cftype *cft = of_cft(of);  in cgroup_file_open()  local
3792 	if (cft->open)  in cgroup_file_open()
3793 		return cft->open(of);  in cgroup_file_open()
3799 	struct cftype *cft = of_cft(of);  in cgroup_file_release()  local
3801 	if (cft->release)  in cgroup_file_release()
3802 		cft->release(of);  in cgroup_file_release()
3810 	struct cftype *cft = of_cft(of);  in cgroup_file_write()  local
3824 	    !(cft->flags & CFTYPE_NS_DELEGATABLE) &&  in cgroup_file_write()
3828 	if (cft->write)  in cgroup_file_write()
3829 		return cft->write(of, buf, nbytes, off);  in cgroup_file_write()
3838 	css = cgroup_css(cgrp, cft->ss);  in cgroup_file_write()
3841 	if (cft->write_u64) {  in cgroup_file_write()
3845 			ret = cft->write_u64(css, cft, v);  in cgroup_file_write()
3846 	} else if (cft->write_s64) {  in cgroup_file_write()
3850 			ret = cft->write_s64(css, cft, v);  in cgroup_file_write()
3860 	struct cftype *cft = of_cft(of);  in cgroup_file_poll()  local
3862 	if (cft->poll)  in cgroup_file_poll()
3863 		return cft->poll(of, pt);  in cgroup_file_poll()
3886 	struct cftype *cft = seq_cft(m);  in cgroup_seqfile_show()  local
3889 	if (cft->seq_show)  in cgroup_seqfile_show()
3890 		return cft->seq_show(m, arg);  in cgroup_seqfile_show()
3892 	if (cft->read_u64)  in cgroup_seqfile_show()
3893 		seq_printf(m, "%llu\n", cft->read_u64(css, cft));  in cgroup_seqfile_show()
3894 	else if (cft->read_s64)  in cgroup_seqfile_show()
3895 		seq_printf(m, "%lld\n", cft->read_s64(css, cft));  in cgroup_seqfile_show()
3943 			   struct cftype *cft)  in cgroup_add_file()  argument
3951 	key = &cft->lockdep_key;  in cgroup_add_file()
3953 	kn = __kernfs_create_file(cgrp->kn, cgroup_file_name(cgrp, cft, name),  in cgroup_add_file()
3954 				  cgroup_file_mode(cft),  in cgroup_add_file()
3956 				  0, cft->kf_ops, cft,  in cgroup_add_file()
3967 	if (cft->file_offset) {  in cgroup_add_file()
3968 		struct cgroup_file *cfile = (void *)css + cft->file_offset;  in cgroup_add_file()
3994 	struct cftype *cft, *cft_end = NULL;  in cgroup_addrm_files()  local
4000 	for (cft = cfts; cft != cft_end && cft->name[0] != '\0'; cft++) {  in cgroup_addrm_files()
4002 		if ((cft->flags & CFTYPE_PRESSURE) && !cgroup_psi_enabled())  in cgroup_addrm_files()
4004 		if ((cft->flags & __CFTYPE_ONLY_ON_DFL) && !cgroup_on_dfl(cgrp))  in cgroup_addrm_files()
4006 		if ((cft->flags & __CFTYPE_NOT_ON_DFL) && cgroup_on_dfl(cgrp))  in cgroup_addrm_files()
4008 		if ((cft->flags & CFTYPE_NOT_ON_ROOT) && !cgroup_parent(cgrp))  in cgroup_addrm_files()
4010 		if ((cft->flags & CFTYPE_ONLY_ON_ROOT) && cgroup_parent(cgrp))  in cgroup_addrm_files()
4012 		if ((cft->flags & CFTYPE_DEBUG) && !cgroup_debug)  in cgroup_addrm_files()
4015 			ret = cgroup_add_file(css, cgrp, cft);  in cgroup_addrm_files()
4018 					__func__, cft->name, ret);  in cgroup_addrm_files()
4019 				cft_end = cft;  in cgroup_addrm_files()
4024 			cgroup_rm_file(cgrp, cft);  in cgroup_addrm_files()
4058 	struct cftype *cft;  in cgroup_exit_cftypes()  local
4060 	for (cft = cfts; cft->name[0] != '\0'; cft++) {  in cgroup_exit_cftypes()
4062 		if (cft->max_write_len && cft->max_write_len != PAGE_SIZE)  in cgroup_exit_cftypes()
4063 			kfree(cft->kf_ops);  in cgroup_exit_cftypes()
4064 		cft->kf_ops = NULL;  in cgroup_exit_cftypes()
4065 		cft->ss = NULL;  in cgroup_exit_cftypes()
4068 		cft->flags &= ~(__CFTYPE_ONLY_ON_DFL | __CFTYPE_NOT_ON_DFL);  in cgroup_exit_cftypes()
4074 	struct cftype *cft;  in cgroup_init_cftypes()  local
4076 	for (cft = cfts; cft->name[0] != '\0'; cft++) {  in cgroup_init_cftypes()
4079 		WARN_ON(cft->ss || cft->kf_ops);  in cgroup_init_cftypes()
4081 		if ((cft->flags & CFTYPE_PRESSURE) && !cgroup_psi_enabled())  in cgroup_init_cftypes()
4084 		if (cft->seq_start)  in cgroup_init_cftypes()
4093 		if (cft->max_write_len && cft->max_write_len != PAGE_SIZE) {  in cgroup_init_cftypes()
4099 			kf_ops->atomic_write_len = cft->max_write_len;  in cgroup_init_cftypes()
4102 		cft->kf_ops = kf_ops;  in cgroup_init_cftypes()
4103 		cft->ss = ss;  in cgroup_init_cftypes()
4192 	struct cftype *cft;  in cgroup_add_dfl_cftypes()  local
4194 	for (cft = cfts; cft && cft->name[0] != '\0'; cft++)  in cgroup_add_dfl_cftypes()
4195 		cft->flags |= __CFTYPE_ONLY_ON_DFL;  in cgroup_add_dfl_cftypes()
4209 	struct cftype *cft;  in cgroup_add_legacy_cftypes()  local
4211 	for (cft = cfts; cft && cft->name[0] != '\0'; cft++)  in cgroup_add_legacy_cftypes()
4212 		cft->flags |= __CFTYPE_NOT_ON_DFL;  in cgroup_add_legacy_cftypes()
6670 	struct cftype *cft;  in show_delegatable_files()  local
6673 	for (cft = files; cft && cft->name[0] != '\0'; cft++) {  in show_delegatable_files()
6674 		if (!(cft->flags & CFTYPE_NS_DELEGATABLE))  in show_delegatable_files()
6677 		if ((cft->flags & CFTYPE_PRESSURE) && !cgroup_psi_enabled())  in show_delegatable_files()
6683 		ret += snprintf(buf + ret, size - ret, "%s\n", cft->name);  in show_delegatable_files()