451 	struct cftype *cft = of_cft(of);  in of_css()  local
461 	if (cft->ss)  in of_css()
462 		return rcu_dereference_raw(cgrp->subsys[cft->ss->id]);  in of_css()
1234 static char *cgroup_file_name(struct cgroup *cgrp, const struct cftype *cft,  in cgroup_file_name()  argument
1237 	struct cgroup_subsys *ss = cft->ss;  in cgroup_file_name()
1239 	if (cft->ss && !(cft->flags & CFTYPE_NO_PREFIX) &&  in cgroup_file_name()
1243 			 cft->name);  in cgroup_file_name()
1245 		strncpy(buf, cft->name, CGROUP_FILE_NAME_MAX);  in cgroup_file_name()
1255 static umode_t cgroup_file_mode(const struct cftype *cft)  in cgroup_file_mode()  argument
1259 	if (cft->read_u64 || cft->read_s64 || cft->seq_show)  in cgroup_file_mode()
1262 	if (cft->write_u64 || cft->write_s64 || cft->write) {  in cgroup_file_mode()
1263 		if (cft->flags & CFTYPE_WORLD_WRITABLE)  in cgroup_file_mode()
1403 static void cgroup_rm_file(struct cgroup *cgrp, const struct cftype *cft)  in cgroup_rm_file()  argument
1409 	if (cft->file_offset) {  in cgroup_rm_file()
1410 		struct cgroup_subsys_state *css = cgroup_css(cgrp, cft->ss);  in cgroup_rm_file()
1411 		struct cgroup_file *cfile = (void *)css + cft->file_offset;  in cgroup_rm_file()
1418 	kernfs_remove_by_name(cgrp->kn, cgroup_file_name(cgrp, cft, name));  in cgroup_rm_file()
3213 	struct cftype *cft = of->kn->priv;  in cgroup_file_write()  local
3217 	if (cft->write)  in cgroup_file_write()
3218 		return cft->write(of, buf, nbytes, off);  in cgroup_file_write()
3227 	css = cgroup_css(cgrp, cft->ss);  in cgroup_file_write()
3230 	if (cft->write_u64) {  in cgroup_file_write()
3234 			ret = cft->write_u64(css, cft, v);  in cgroup_file_write()
3235 	} else if (cft->write_s64) {  in cgroup_file_write()
3239 			ret = cft->write_s64(css, cft, v);  in cgroup_file_write()
3264 	struct cftype *cft = seq_cft(m);  in cgroup_seqfile_show()  local
3267 	if (cft->seq_show)  in cgroup_seqfile_show()
3268 		return cft->seq_show(m, arg);  in cgroup_seqfile_show()
3270 	if (cft->read_u64)  in cgroup_seqfile_show()
3271 		seq_printf(m, "%llu\n", cft->read_u64(css, cft));  in cgroup_seqfile_show()
3272 	else if (cft->read_s64)  in cgroup_seqfile_show()
3273 		seq_printf(m, "%lld\n", cft->read_s64(css, cft));  in cgroup_seqfile_show()
3349 			   struct cftype *cft)  in cgroup_add_file()  argument
3357 	key = &cft->lockdep_key;  in cgroup_add_file()
3359 	kn = __kernfs_create_file(cgrp->kn, cgroup_file_name(cgrp, cft, name),  in cgroup_add_file()
3360 				  cgroup_file_mode(cft), 0, cft->kf_ops, cft,  in cgroup_add_file()
3371 	if (cft->file_offset) {  in cgroup_add_file()
3372 		struct cgroup_file *cfile = (void *)css + cft->file_offset;  in cgroup_add_file()
3396 	struct cftype *cft, *cft_end = NULL;  in cgroup_addrm_files()  local
3402 	for (cft = cfts; cft != cft_end && cft->name[0] != '\0'; cft++) {  in cgroup_addrm_files()
3404 		if ((cft->flags & __CFTYPE_ONLY_ON_DFL) && !cgroup_on_dfl(cgrp))  in cgroup_addrm_files()
3406 		if ((cft->flags & __CFTYPE_NOT_ON_DFL) && cgroup_on_dfl(cgrp))  in cgroup_addrm_files()
3408 		if ((cft->flags & CFTYPE_NOT_ON_ROOT) && !cgroup_parent(cgrp))  in cgroup_addrm_files()
3410 		if ((cft->flags & CFTYPE_ONLY_ON_ROOT) && cgroup_parent(cgrp))  in cgroup_addrm_files()
3414 			ret = cgroup_add_file(css, cgrp, cft);  in cgroup_addrm_files()
3417 					__func__, cft->name, ret);  in cgroup_addrm_files()
3418 				cft_end = cft;  in cgroup_addrm_files()
3423 			cgroup_rm_file(cgrp, cft);  in cgroup_addrm_files()
3458 	struct cftype *cft;  in cgroup_exit_cftypes()  local
3460 	for (cft = cfts; cft->name[0] != '\0'; cft++) {  in cgroup_exit_cftypes()
3462 		if (cft->max_write_len && cft->max_write_len != PAGE_SIZE)  in cgroup_exit_cftypes()
3463 			kfree(cft->kf_ops);  in cgroup_exit_cftypes()
3464 		cft->kf_ops = NULL;  in cgroup_exit_cftypes()
3465 		cft->ss = NULL;  in cgroup_exit_cftypes()
3468 		cft->flags &= ~(__CFTYPE_ONLY_ON_DFL | __CFTYPE_NOT_ON_DFL);  in cgroup_exit_cftypes()
3474 	struct cftype *cft;  in cgroup_init_cftypes()  local
3476 	for (cft = cfts; cft->name[0] != '\0'; cft++) {  in cgroup_init_cftypes()
3479 		WARN_ON(cft->ss || cft->kf_ops);  in cgroup_init_cftypes()
3481 		if (cft->seq_start)  in cgroup_init_cftypes()
3490 		if (cft->max_write_len && cft->max_write_len != PAGE_SIZE) {  in cgroup_init_cftypes()
3496 			kf_ops->atomic_write_len = cft->max_write_len;  in cgroup_init_cftypes()
3499 		cft->kf_ops = kf_ops;  in cgroup_init_cftypes()
3500 		cft->ss = ss;  in cgroup_init_cftypes()
3589 	struct cftype *cft;  in cgroup_add_dfl_cftypes()  local
3591 	for (cft = cfts; cft && cft->name[0] != '\0'; cft++)  in cgroup_add_dfl_cftypes()
3592 		cft->flags |= __CFTYPE_ONLY_ON_DFL;  in cgroup_add_dfl_cftypes()
3606 	struct cftype *cft;  in cgroup_add_legacy_cftypes()  local
3608 	for (cft = cfts; cft && cft->name[0] != '\0'; cft++)  in cgroup_add_legacy_cftypes()
3609 		cft->flags |= __CFTYPE_NOT_ON_DFL;  in cgroup_add_legacy_cftypes()
4550 					 struct cftype *cft)  in cgroup_read_notify_on_release()  argument
4556 					  struct cftype *cft, u64 val)  in cgroup_write_notify_on_release()  argument
4566 				      struct cftype *cft)  in cgroup_clone_children_read()  argument
4572 				       struct cftype *cft, u64 val)  in cgroup_clone_children_write()  argument
5876 				struct cftype *cft)  in debug_taskcount_read()  argument
5882 				struct cftype *cft)  in current_css_set_read()  argument
5888 					 struct cftype *cft)  in current_css_set_refcount_read()  argument
5957 static u64 releasable_read(struct cgroup_subsys_state *css, struct cftype *cft)  in releasable_read()  argument