189 static int rdtgroup_kn_set_ugid(struct kernfs_node *kn)  in rdtgroup_kn_set_ugid()  argument
199 	return kernfs_setattr(kn, &iattr);  in rdtgroup_kn_set_ugid()
204 	struct kernfs_node *kn;  in rdtgroup_add_file()  local
207 	kn = __kernfs_create_file(parent_kn, rft->name, rft->mode,  in rdtgroup_add_file()
210 	if (IS_ERR(kn))  in rdtgroup_add_file()
211 		return PTR_ERR(kn);  in rdtgroup_add_file()
213 	ret = rdtgroup_kn_set_ugid(kn);  in rdtgroup_add_file()
215 		kernfs_remove(kn);  in rdtgroup_add_file()
225 	struct rftype *rft = of->kn->priv;  in rdtgroup_seqfile_show()
235 	struct rftype *rft = of->kn->priv;  in rdtgroup_file_write()
256 	struct rftype *rft = of->kn->priv;  in is_cpu_list()
268 	rdtgrp = rdtgroup_kn_lock_live(of->kn);  in rdtgroup_cpus_show()
289 	rdtgroup_kn_unlock(of->kn);  in rdtgroup_cpus_show()
463 	rdtgrp = rdtgroup_kn_lock_live(of->kn);  in rdtgroup_cpus_write()
502 	rdtgroup_kn_unlock(of->kn);  in rdtgroup_cpus_write()
677 	rdtgrp = rdtgroup_kn_lock_live(of->kn);  in rdtgroup_tasks_write()
679 		rdtgroup_kn_unlock(of->kn);  in rdtgroup_tasks_write()
694 	rdtgroup_kn_unlock(of->kn);  in rdtgroup_tasks_write()
718 	rdtgrp = rdtgroup_kn_lock_live(of->kn);  in rdtgroup_tasks_show()
723 	rdtgroup_kn_unlock(of->kn);  in rdtgroup_tasks_show()
746 	struct rdt_resource *r = of->kn->parent->priv;  in rdt_num_closids_show()
755 	struct rdt_resource *r = of->kn->parent->priv;  in rdt_default_ctrl_show()
764 	struct rdt_resource *r = of->kn->parent->priv;  in rdt_min_cbm_bits_show()
773 	struct rdt_resource *r = of->kn->parent->priv;  in rdt_shareable_bits_show()
796 	struct rdt_resource *r = of->kn->parent->priv;  in rdt_bit_usage_show()
874 	struct rdt_resource *r = of->kn->parent->priv;  in rdt_min_bw_show()
883 	struct rdt_resource *r = of->kn->parent->priv;  in rdt_num_rmids_show()
893 	struct rdt_resource *r = of->kn->parent->priv;  in rdt_mon_features_show()
905 	struct rdt_resource *r = of->kn->parent->priv;  in rdt_bw_gran_show()
914 	struct rdt_resource *r = of->kn->parent->priv;  in rdt_delay_linear_show()
923 	struct rdt_resource *r = of->kn->parent->priv;  in max_threshold_occ_show()
933 	struct rdt_resource *r = of->kn->parent->priv;  in max_threshold_occ_write()
957 	rdtgrp = rdtgroup_kn_lock_live(of->kn);  in rdtgroup_mode_show()
959 		rdtgroup_kn_unlock(of->kn);  in rdtgroup_mode_show()
965 	rdtgroup_kn_unlock(of->kn);  in rdtgroup_mode_show()
1187 	rdtgrp = rdtgroup_kn_lock_live(of->kn);  in rdtgroup_mode_write()
1189 		rdtgroup_kn_unlock(of->kn);  in rdtgroup_mode_write()
1239 	rdtgroup_kn_unlock(of->kn);  in rdtgroup_mode_write()
1295 	rdtgrp = rdtgroup_kn_lock_live(of->kn);  in rdtgroup_size_show()
1297 		rdtgroup_kn_unlock(of->kn);  in rdtgroup_size_show()
1341 	rdtgroup_kn_unlock(of->kn);  in rdtgroup_size_show()
1484 static int rdtgroup_add_files(struct kernfs_node *kn, unsigned long fflags)  in rdtgroup_add_files()  argument
1496 			ret = rdtgroup_add_file(kn, rft);  in rdtgroup_add_files()
1507 			kernfs_remove_by_name(kn, rft->name);  in rdtgroup_add_files()
1532 	struct kernfs_node *kn;  in rdtgroup_kn_mode_restrict()  local
1535 	kn = kernfs_find_and_get_ns(r->kn, name, NULL);  in rdtgroup_kn_mode_restrict()
1536 	if (!kn)  in rdtgroup_kn_mode_restrict()
1539 	switch (kernfs_type(kn)) {  in rdtgroup_kn_mode_restrict()
1551 	ret = kernfs_setattr(kn, &iattr);  in rdtgroup_kn_mode_restrict()
1552 	kernfs_put(kn);  in rdtgroup_kn_mode_restrict()
1571 	struct kernfs_node *kn, *parent;  in rdtgroup_kn_mode_restore()  local
1583 	kn = kernfs_find_and_get_ns(r->kn, name, NULL);  in rdtgroup_kn_mode_restore()
1584 	if (!kn)  in rdtgroup_kn_mode_restore()
1587 	switch (kernfs_type(kn)) {  in rdtgroup_kn_mode_restore()
1589 		parent = kernfs_get_parent(kn);  in rdtgroup_kn_mode_restore()
1604 	ret = kernfs_setattr(kn, &iattr);  in rdtgroup_kn_mode_restore()
1605 	kernfs_put(kn);  in rdtgroup_kn_mode_restore()
1687 	struct kernfs_node *kn;  in mongroup_create_dir()  local
1691 	kn = kernfs_create_dir(parent_kn, name, parent_kn->mode, prgrp);  in mongroup_create_dir()
1692 	if (IS_ERR(kn))  in mongroup_create_dir()
1693 		return PTR_ERR(kn);  in mongroup_create_dir()
1696 		*dest_kn = kn;  in mongroup_create_dir()
1702 	kernfs_get(kn);  in mongroup_create_dir()
1704 	ret = rdtgroup_kn_set_ugid(kn);  in mongroup_create_dir()
1708 	kernfs_activate(kn);  in mongroup_create_dir()
1713 	kernfs_remove(kn);  in mongroup_create_dir()
1865 static struct rdtgroup *kernfs_to_rdtgroup(struct kernfs_node *kn)  in kernfs_to_rdtgroup()  argument
1867 	if (kernfs_type(kn) == KERNFS_DIR) {  in kernfs_to_rdtgroup()
1874 		if (kn == kn_info || kn->parent == kn_info)  in kernfs_to_rdtgroup()
1877 			return kn->priv;  in kernfs_to_rdtgroup()
1879 		return kn->parent->priv;  in kernfs_to_rdtgroup()
1883 struct rdtgroup *rdtgroup_kn_lock_live(struct kernfs_node *kn)  in rdtgroup_kn_lock_live()  argument
1885 	struct rdtgroup *rdtgrp = kernfs_to_rdtgroup(kn);  in rdtgroup_kn_lock_live()
1891 	kernfs_break_active_protection(kn);  in rdtgroup_kn_lock_live()
1902 void rdtgroup_kn_unlock(struct kernfs_node *kn)  in rdtgroup_kn_unlock()  argument
1904 	struct rdtgroup *rdtgrp = kernfs_to_rdtgroup(kn);  in rdtgroup_kn_unlock()
1916 		kernfs_unbreak_active_protection(kn);  in rdtgroup_kn_unlock()
1917 		kernfs_put(rdtgrp->kn);  in rdtgroup_kn_unlock()
1920 		kernfs_unbreak_active_protection(kn);  in rdtgroup_kn_unlock()
1967 	ret = rdtgroup_create_info_dir(rdtgroup_default.kn);  in rdt_get_tree()
1972 		ret = mongroup_create_dir(rdtgroup_default.kn,  in rdt_get_tree()
1979 		ret = mkdir_mondata_all(rdtgroup_default.kn,  in rdt_get_tree()
2244 		kernfs_remove(rdtgrp->kn);  in rmdir_all_sub()
2290 	struct kernfs_node *kn;  in mon_addfile()  local
2293 	kn = __kernfs_create_file(parent_kn, name, 0444,  in mon_addfile()
2296 	if (IS_ERR(kn))  in mon_addfile()
2297 		return PTR_ERR(kn);  in mon_addfile()
2299 	ret = rdtgroup_kn_set_ugid(kn);  in mon_addfile()
2301 		kernfs_remove(kn);  in mon_addfile()
2334 	struct kernfs_node *kn;  in mkdir_mondata_subdir()  local
2342 	kn = kernfs_create_dir(parent_kn, name, parent_kn->mode, prgrp);  in mkdir_mondata_subdir()
2343 	if (IS_ERR(kn))  in mkdir_mondata_subdir()
2344 		return PTR_ERR(kn);  in mkdir_mondata_subdir()
2350 	kernfs_get(kn);  in mkdir_mondata_subdir()
2351 	ret = rdtgroup_kn_set_ugid(kn);  in mkdir_mondata_subdir()
2364 		ret = mon_addfile(kn, mevt->name, priv.priv);  in mkdir_mondata_subdir()
2371 	kernfs_activate(kn);  in mkdir_mondata_subdir()
2375 	kernfs_remove(kn);  in mkdir_mondata_subdir()
2443 	struct kernfs_node *kn;  in mkdir_mondata_all()  local
2449 	ret = mongroup_create_dir(parent_kn, NULL, "mon_data", &kn);  in mkdir_mondata_all()
2454 		*dest_kn = kn;  in mkdir_mondata_all()
2461 		ret = mkdir_mondata_subdir_alldom(kn, r, prgrp);  in mkdir_mondata_all()
2469 	kernfs_remove(kn);  in mkdir_mondata_all()
2644 	struct kernfs_node *kn;  in mkdir_rdt_prepare()  local
2675 	kn = kernfs_create_dir(parent_kn, name, mode, rdtgrp);  in mkdir_rdt_prepare()
2676 	if (IS_ERR(kn)) {  in mkdir_rdt_prepare()
2677 		ret = PTR_ERR(kn);  in mkdir_rdt_prepare()
2681 	rdtgrp->kn = kn;  in mkdir_rdt_prepare()
2689 	kernfs_get(kn);  in mkdir_rdt_prepare()
2691 	ret = rdtgroup_kn_set_ugid(kn);  in mkdir_rdt_prepare()
2698 	ret = rdtgroup_add_files(kn, files);  in mkdir_rdt_prepare()
2712 		ret = mkdir_mondata_all(kn, rdtgrp, &rdtgrp->mon.mon_data_kn);  in mkdir_rdt_prepare()
2718 	kernfs_activate(kn);  in mkdir_rdt_prepare()
2728 	kernfs_remove(rdtgrp->kn);  in mkdir_rdt_prepare()
2738 	kernfs_remove(rgrp->kn);  in mkdir_rdt_prepare_clean()
2783 	struct kernfs_node *kn;  in rdtgroup_mkdir_ctrl_mon()  local
2792 	kn = rdtgrp->kn;  in rdtgroup_mkdir_ctrl_mon()
2813 		ret = mongroup_create_dir(kn, NULL, "mon_groups", NULL);  in rdtgroup_mkdir_ctrl_mon()
2843 static bool is_mon_groups(struct kernfs_node *kn, const char *name)  in is_mon_groups()  argument
2845 	return (!strcmp(kn->name, "mon_groups") &&  in is_mon_groups()
2861 	if (rdt_alloc_capable && parent_kn == rdtgroup_default.kn)  in rdtgroup_mkdir()
2874 static int rdtgroup_rmdir_mon(struct kernfs_node *kn, struct rdtgroup *rdtgrp,  in rdtgroup_rmdir_mon()  argument
2906 	kernfs_get(kn);  in rdtgroup_rmdir_mon()
2907 	kernfs_remove(rdtgrp->kn);  in rdtgroup_rmdir_mon()
2912 static int rdtgroup_ctrl_remove(struct kernfs_node *kn,  in rdtgroup_ctrl_remove()  argument
2922 	kernfs_get(kn);  in rdtgroup_ctrl_remove()
2923 	kernfs_remove(rdtgrp->kn);  in rdtgroup_ctrl_remove()
2927 static int rdtgroup_rmdir_ctrl(struct kernfs_node *kn, struct rdtgroup *rdtgrp,  in rdtgroup_rmdir_ctrl()  argument
2960 	rdtgroup_ctrl_remove(kn, rdtgrp);  in rdtgroup_rmdir_ctrl()
2965 static int rdtgroup_rmdir(struct kernfs_node *kn)  in rdtgroup_rmdir()  argument
2967 	struct kernfs_node *parent_kn = kn->parent;  in rdtgroup_rmdir()
2975 	rdtgrp = rdtgroup_kn_lock_live(kn);  in rdtgroup_rmdir()
2988 	if (rdtgrp->type == RDTCTRL_GROUP && parent_kn == rdtgroup_default.kn) {  in rdtgroup_rmdir()
2991 			ret = rdtgroup_ctrl_remove(kn, rdtgrp);  in rdtgroup_rmdir()
2993 			ret = rdtgroup_rmdir_ctrl(kn, rdtgrp, tmpmask);  in rdtgroup_rmdir()
2996 		 is_mon_groups(parent_kn, kn->name)) {  in rdtgroup_rmdir()
2997 		ret = rdtgroup_rmdir_mon(kn, rdtgrp, tmpmask);  in rdtgroup_rmdir()
3003 	rdtgroup_kn_unlock(kn);  in rdtgroup_rmdir()
3048 	ret = rdtgroup_add_files(rdt_root->kn, RF_CTRL_BASE);  in rdtgroup_setup_root()
3054 	rdtgroup_default.kn = rdt_root->kn;  in rdtgroup_setup_root()
3055 	kernfs_activate(rdtgroup_default.kn);  in rdtgroup_setup_root()