195 static int rdtgroup_kn_set_ugid(struct kernfs_node *kn)  in rdtgroup_kn_set_ugid()  argument
205 	return kernfs_setattr(kn, &iattr);  in rdtgroup_kn_set_ugid()
210 	struct kernfs_node *kn;  in rdtgroup_add_file()  local
213 	kn = __kernfs_create_file(parent_kn, rft->name, rft->mode,  in rdtgroup_add_file()
216 	if (IS_ERR(kn))  in rdtgroup_add_file()
217 		return PTR_ERR(kn);  in rdtgroup_add_file()
219 	ret = rdtgroup_kn_set_ugid(kn);  in rdtgroup_add_file()
221 		kernfs_remove(kn);  in rdtgroup_add_file()
231 	struct rftype *rft = of->kn->priv;  in rdtgroup_seqfile_show()
241 	struct rftype *rft = of->kn->priv;  in rdtgroup_file_write()
262 	struct rftype *rft = of->kn->priv;  in is_cpu_list()
273 	rdtgrp = rdtgroup_kn_lock_live(of->kn);  in rdtgroup_cpus_show()
285 	rdtgroup_kn_unlock(of->kn);  in rdtgroup_cpus_show()
459 	rdtgrp = rdtgroup_kn_lock_live(of->kn);  in rdtgroup_cpus_write()
500 	rdtgroup_kn_unlock(of->kn);  in rdtgroup_cpus_write()
675 	rdtgrp = rdtgroup_kn_lock_live(of->kn);  in rdtgroup_tasks_write()
677 		rdtgroup_kn_unlock(of->kn);  in rdtgroup_tasks_write()
692 	rdtgroup_kn_unlock(of->kn);  in rdtgroup_tasks_write()
716 	rdtgrp = rdtgroup_kn_lock_live(of->kn);  in rdtgroup_tasks_show()
721 	rdtgroup_kn_unlock(of->kn);  in rdtgroup_tasks_show()
744 	struct rdt_resource *r = of->kn->parent->priv;  in rdt_num_closids_show()
753 	struct rdt_resource *r = of->kn->parent->priv;  in rdt_default_ctrl_show()
762 	struct rdt_resource *r = of->kn->parent->priv;  in rdt_min_cbm_bits_show()
771 	struct rdt_resource *r = of->kn->parent->priv;  in rdt_shareable_bits_show()
794 	struct rdt_resource *r = of->kn->parent->priv;  in rdt_bit_usage_show()
868 	struct rdt_resource *r = of->kn->parent->priv;  in rdt_min_bw_show()
877 	struct rdt_resource *r = of->kn->parent->priv;  in rdt_num_rmids_show()
887 	struct rdt_resource *r = of->kn->parent->priv;  in rdt_mon_features_show()
899 	struct rdt_resource *r = of->kn->parent->priv;  in rdt_bw_gran_show()
908 	struct rdt_resource *r = of->kn->parent->priv;  in rdt_delay_linear_show()
917 	struct rdt_resource *r = of->kn->parent->priv;  in max_threshold_occ_show()
927 	struct rdt_resource *r = of->kn->parent->priv;  in max_threshold_occ_write()
951 	rdtgrp = rdtgroup_kn_lock_live(of->kn);  in rdtgroup_mode_show()
953 		rdtgroup_kn_unlock(of->kn);  in rdtgroup_mode_show()
959 	rdtgroup_kn_unlock(of->kn);  in rdtgroup_mode_show()
1075 	rdtgrp = rdtgroup_kn_lock_live(of->kn);  in rdtgroup_mode_write()
1077 		rdtgroup_kn_unlock(of->kn);  in rdtgroup_mode_write()
1127 	rdtgroup_kn_unlock(of->kn);  in rdtgroup_mode_write()
1182 	rdtgrp = rdtgroup_kn_lock_live(of->kn);  in rdtgroup_size_show()
1184 		rdtgroup_kn_unlock(of->kn);  in rdtgroup_size_show()
1221 	rdtgroup_kn_unlock(of->kn);  in rdtgroup_size_show()
1364 static int rdtgroup_add_files(struct kernfs_node *kn, unsigned long fflags)  in rdtgroup_add_files()  argument
1376 			ret = rdtgroup_add_file(kn, rft);  in rdtgroup_add_files()
1387 			kernfs_remove_by_name(kn, rft->name);  in rdtgroup_add_files()
1412 	struct kernfs_node *kn;  in rdtgroup_kn_mode_restrict()  local
1415 	kn = kernfs_find_and_get_ns(r->kn, name, NULL);  in rdtgroup_kn_mode_restrict()
1416 	if (!kn)  in rdtgroup_kn_mode_restrict()
1419 	switch (kernfs_type(kn)) {  in rdtgroup_kn_mode_restrict()
1431 	ret = kernfs_setattr(kn, &iattr);  in rdtgroup_kn_mode_restrict()
1432 	kernfs_put(kn);  in rdtgroup_kn_mode_restrict()
1451 	struct kernfs_node *kn, *parent;  in rdtgroup_kn_mode_restore()  local
1463 	kn = kernfs_find_and_get_ns(r->kn, name, NULL);  in rdtgroup_kn_mode_restore()
1464 	if (!kn)  in rdtgroup_kn_mode_restore()
1467 	switch (kernfs_type(kn)) {  in rdtgroup_kn_mode_restore()
1469 		parent = kernfs_get_parent(kn);  in rdtgroup_kn_mode_restore()
1484 	ret = kernfs_setattr(kn, &iattr);  in rdtgroup_kn_mode_restore()
1485 	kernfs_put(kn);  in rdtgroup_kn_mode_restore()
1567 	struct kernfs_node *kn;  in mongroup_create_dir()  local
1571 	kn = kernfs_create_dir(parent_kn, name, parent_kn->mode, prgrp);  in mongroup_create_dir()
1572 	if (IS_ERR(kn))  in mongroup_create_dir()
1573 		return PTR_ERR(kn);  in mongroup_create_dir()
1576 		*dest_kn = kn;  in mongroup_create_dir()
1582 	kernfs_get(kn);  in mongroup_create_dir()
1584 	ret = rdtgroup_kn_set_ugid(kn);  in mongroup_create_dir()
1588 	kernfs_activate(kn);  in mongroup_create_dir()
1593 	kernfs_remove(kn);  in mongroup_create_dir()
1782 static struct rdtgroup *kernfs_to_rdtgroup(struct kernfs_node *kn)  in kernfs_to_rdtgroup()  argument
1784 	if (kernfs_type(kn) == KERNFS_DIR) {  in kernfs_to_rdtgroup()
1791 		if (kn == kn_info || kn->parent == kn_info)  in kernfs_to_rdtgroup()
1794 			return kn->priv;  in kernfs_to_rdtgroup()
1796 		return kn->parent->priv;  in kernfs_to_rdtgroup()
1800 struct rdtgroup *rdtgroup_kn_lock_live(struct kernfs_node *kn)  in rdtgroup_kn_lock_live()  argument
1802 	struct rdtgroup *rdtgrp = kernfs_to_rdtgroup(kn);  in rdtgroup_kn_lock_live()
1808 	kernfs_break_active_protection(kn);  in rdtgroup_kn_lock_live()
1819 void rdtgroup_kn_unlock(struct kernfs_node *kn)  in rdtgroup_kn_unlock()  argument
1821 	struct rdtgroup *rdtgrp = kernfs_to_rdtgroup(kn);  in rdtgroup_kn_unlock()
1833 		kernfs_unbreak_active_protection(kn);  in rdtgroup_kn_unlock()
1834 		kernfs_put(rdtgrp->kn);  in rdtgroup_kn_unlock()
1837 		kernfs_unbreak_active_protection(kn);  in rdtgroup_kn_unlock()
1872 	ret = rdtgroup_create_info_dir(rdtgroup_default.kn);  in rdt_mount()
1879 		ret = mongroup_create_dir(rdtgroup_default.kn,  in rdt_mount()
1888 		ret = mkdir_mondata_all(rdtgroup_default.kn,  in rdt_mount()
2078 		kernfs_remove(rdtgrp->kn);  in rmdir_all_sub()
2123 	struct kernfs_node *kn;  in mon_addfile()  local
2126 	kn = __kernfs_create_file(parent_kn, name, 0444,  in mon_addfile()
2129 	if (IS_ERR(kn))  in mon_addfile()
2130 		return PTR_ERR(kn);  in mon_addfile()
2132 	ret = rdtgroup_kn_set_ugid(kn);  in mon_addfile()
2134 		kernfs_remove(kn);  in mon_addfile()
2167 	struct kernfs_node *kn;  in mkdir_mondata_subdir()  local
2175 	kn = kernfs_create_dir(parent_kn, name, parent_kn->mode, prgrp);  in mkdir_mondata_subdir()
2176 	if (IS_ERR(kn))  in mkdir_mondata_subdir()
2177 		return PTR_ERR(kn);  in mkdir_mondata_subdir()
2183 	kernfs_get(kn);  in mkdir_mondata_subdir()
2184 	ret = rdtgroup_kn_set_ugid(kn);  in mkdir_mondata_subdir()
2197 		ret = mon_addfile(kn, mevt->name, priv.priv);  in mkdir_mondata_subdir()
2204 	kernfs_activate(kn);  in mkdir_mondata_subdir()
2208 	kernfs_remove(kn);  in mkdir_mondata_subdir()
2276 	struct kernfs_node *kn;  in mkdir_mondata_all()  local
2282 	ret = mongroup_create_dir(parent_kn, NULL, "mon_data", &kn);  in mkdir_mondata_all()
2287 		*dest_kn = kn;  in mkdir_mondata_all()
2294 		ret = mkdir_mondata_subdir_alldom(kn, r, prgrp);  in mkdir_mondata_all()
2302 	kernfs_remove(kn);  in mkdir_mondata_all()
2438 	struct kernfs_node *kn;  in mkdir_rdt_prepare()  local
2471 	kn = kernfs_create_dir(parent_kn, name, mode, rdtgrp);  in mkdir_rdt_prepare()
2472 	if (IS_ERR(kn)) {  in mkdir_rdt_prepare()
2473 		ret = PTR_ERR(kn);  in mkdir_rdt_prepare()
2477 	rdtgrp->kn = kn;  in mkdir_rdt_prepare()
2485 	kernfs_get(kn);  in mkdir_rdt_prepare()
2487 	ret = rdtgroup_kn_set_ugid(kn);  in mkdir_rdt_prepare()
2494 	ret = rdtgroup_add_files(kn, files);  in mkdir_rdt_prepare()
2508 		ret = mkdir_mondata_all(kn, rdtgrp, &rdtgrp->mon.mon_data_kn);  in mkdir_rdt_prepare()
2514 	kernfs_activate(kn);  in mkdir_rdt_prepare()
2524 	kernfs_remove(rdtgrp->kn);  in mkdir_rdt_prepare()
2534 	kernfs_remove(rgrp->kn);  in mkdir_rdt_prepare_clean()
2579 	struct kernfs_node *kn;  in rdtgroup_mkdir_ctrl_mon()  local
2588 	kn = rdtgrp->kn;  in rdtgroup_mkdir_ctrl_mon()
2609 		ret = mongroup_create_dir(kn, NULL, "mon_groups", NULL);  in rdtgroup_mkdir_ctrl_mon()
2639 static bool is_mon_groups(struct kernfs_node *kn, const char *name)  in is_mon_groups()  argument
2641 	return (!strcmp(kn->name, "mon_groups") &&  in is_mon_groups()
2657 	if (rdt_alloc_capable && parent_kn == rdtgroup_default.kn)  in rdtgroup_mkdir()
2670 static int rdtgroup_rmdir_mon(struct kernfs_node *kn, struct rdtgroup *rdtgrp,  in rdtgroup_rmdir_mon()  argument
2702 	kernfs_get(kn);  in rdtgroup_rmdir_mon()
2703 	kernfs_remove(rdtgrp->kn);  in rdtgroup_rmdir_mon()
2708 static int rdtgroup_ctrl_remove(struct kernfs_node *kn,  in rdtgroup_ctrl_remove()  argument
2718 	kernfs_get(kn);  in rdtgroup_ctrl_remove()
2719 	kernfs_remove(rdtgrp->kn);  in rdtgroup_ctrl_remove()
2723 static int rdtgroup_rmdir_ctrl(struct kernfs_node *kn, struct rdtgroup *rdtgrp,  in rdtgroup_rmdir_ctrl()  argument
2756 	rdtgroup_ctrl_remove(kn, rdtgrp);  in rdtgroup_rmdir_ctrl()
2761 static int rdtgroup_rmdir(struct kernfs_node *kn)  in rdtgroup_rmdir()  argument
2763 	struct kernfs_node *parent_kn = kn->parent;  in rdtgroup_rmdir()
2771 	rdtgrp = rdtgroup_kn_lock_live(kn);  in rdtgroup_rmdir()
2784 	if (rdtgrp->type == RDTCTRL_GROUP && parent_kn == rdtgroup_default.kn) {  in rdtgroup_rmdir()
2787 			ret = rdtgroup_ctrl_remove(kn, rdtgrp);  in rdtgroup_rmdir()
2789 			ret = rdtgroup_rmdir_ctrl(kn, rdtgrp, tmpmask);  in rdtgroup_rmdir()
2792 		 is_mon_groups(parent_kn, kn->name)) {  in rdtgroup_rmdir()
2793 		ret = rdtgroup_rmdir_mon(kn, rdtgrp, tmpmask);  in rdtgroup_rmdir()
2799 	rdtgroup_kn_unlock(kn);  in rdtgroup_rmdir()
2837 	ret = rdtgroup_add_files(rdt_root->kn, RF_CTRL_BASE);  in rdtgroup_setup_root()
2843 	rdtgroup_default.kn = rdt_root->kn;  in rdtgroup_setup_root()
2844 	kernfs_activate(rdtgroup_default.kn);  in rdtgroup_setup_root()