205 static int rdtgroup_kn_set_ugid(struct kernfs_node *kn)  in rdtgroup_kn_set_ugid()  argument
215 	return kernfs_setattr(kn, &iattr);  in rdtgroup_kn_set_ugid()
220 	struct kernfs_node *kn;  in rdtgroup_add_file()  local
223 	kn = __kernfs_create_file(parent_kn, rft->name, rft->mode,  in rdtgroup_add_file()
226 	if (IS_ERR(kn))  in rdtgroup_add_file()
227 		return PTR_ERR(kn);  in rdtgroup_add_file()
229 	ret = rdtgroup_kn_set_ugid(kn);  in rdtgroup_add_file()
231 		kernfs_remove(kn);  in rdtgroup_add_file()
241 	struct rftype *rft = of->kn->priv;  in rdtgroup_seqfile_show()
251 	struct rftype *rft = of->kn->priv;  in rdtgroup_file_write()
272 	struct rftype *rft = of->kn->priv;  in is_cpu_list()
284 	rdtgrp = rdtgroup_kn_lock_live(of->kn);  in rdtgroup_cpus_show()
305 	rdtgroup_kn_unlock(of->kn);  in rdtgroup_cpus_show()
474 	rdtgrp = rdtgroup_kn_lock_live(of->kn);  in rdtgroup_cpus_write()
513 	rdtgroup_kn_unlock(of->kn);  in rdtgroup_cpus_write()
535 	kernfs_put(rdtgrp->kn);  in rdtgroup_remove()
704 	rdtgrp = rdtgroup_kn_lock_live(of->kn);  in rdtgroup_tasks_write()
706 		rdtgroup_kn_unlock(of->kn);  in rdtgroup_tasks_write()
721 	rdtgroup_kn_unlock(of->kn);  in rdtgroup_tasks_write()
748 	rdtgrp = rdtgroup_kn_lock_live(of->kn);  in rdtgroup_tasks_show()
753 	rdtgroup_kn_unlock(of->kn);  in rdtgroup_tasks_show()
820 			   rdtg->kn->name);  in proc_resctrl_show()
826 			seq_printf(s, "%s", crg->kn->name);  in proc_resctrl_show()
862 	struct resctrl_schema *s = of->kn->parent->priv;  in rdt_num_closids_show()
871 	struct resctrl_schema *s = of->kn->parent->priv;  in rdt_default_ctrl_show()
881 	struct resctrl_schema *s = of->kn->parent->priv;  in rdt_min_cbm_bits_show()
891 	struct resctrl_schema *s = of->kn->parent->priv;  in rdt_shareable_bits_show()
915 	struct resctrl_schema *s = of->kn->parent->priv;  in rdt_bit_usage_show()
995 	struct resctrl_schema *s = of->kn->parent->priv;  in rdt_min_bw_show()
1005 	struct rdt_resource *r = of->kn->parent->priv;  in rdt_num_rmids_show()
1015 	struct rdt_resource *r = of->kn->parent->priv;  in rdt_mon_features_show()
1030 	struct resctrl_schema *s = of->kn->parent->priv;  in rdt_bw_gran_show()
1040 	struct resctrl_schema *s = of->kn->parent->priv;  in rdt_delay_linear_show()
1058 	struct resctrl_schema *s = of->kn->parent->priv;  in rdt_thread_throttle_mode_show()
1095 	rdtgrp = rdtgroup_kn_lock_live(of->kn);  in rdtgroup_mode_show()
1097 		rdtgroup_kn_unlock(of->kn);  in rdtgroup_mode_show()
1103 	rdtgroup_kn_unlock(of->kn);  in rdtgroup_mode_show()
1270 	rdtgrp = rdtgroup_kn_lock_live(of->kn);  in rdtgroup_mode_write()
1272 		rdtgroup_kn_unlock(of->kn);  in rdtgroup_mode_write()
1322 	rdtgroup_kn_unlock(of->kn);  in rdtgroup_mode_write()
1381 	rdtgrp = rdtgroup_kn_lock_live(of->kn);  in rdtgroup_size_show()
1383 		rdtgroup_kn_unlock(of->kn);  in rdtgroup_size_show()
1435 	rdtgroup_kn_unlock(of->kn);  in rdtgroup_size_show()
1520 	struct rdt_resource *r = of->kn->parent->priv;  in mbm_total_bytes_config_show()
1530 	struct rdt_resource *r = of->kn->parent->priv;  in mbm_local_bytes_config_show()
1638 	struct rdt_resource *r = of->kn->parent->priv;  in mbm_total_bytes_config_write()
1662 	struct rdt_resource *r = of->kn->parent->priv;  in mbm_local_bytes_config_write()
1845 static int rdtgroup_add_files(struct kernfs_node *kn, unsigned long fflags)  in rdtgroup_add_files()  argument
1857 			ret = rdtgroup_add_file(kn, rft);  in rdtgroup_add_files()
1868 			kernfs_remove_by_name(kn, rft->name);  in rdtgroup_add_files()
1929 	struct kernfs_node *kn;  in rdtgroup_kn_mode_restrict()  local
1932 	kn = kernfs_find_and_get_ns(r->kn, name, NULL);  in rdtgroup_kn_mode_restrict()
1933 	if (!kn)  in rdtgroup_kn_mode_restrict()
1936 	switch (kernfs_type(kn)) {  in rdtgroup_kn_mode_restrict()
1948 	ret = kernfs_setattr(kn, &iattr);  in rdtgroup_kn_mode_restrict()
1949 	kernfs_put(kn);  in rdtgroup_kn_mode_restrict()
1968 	struct kernfs_node *kn, *parent;  in rdtgroup_kn_mode_restore()  local
1980 	kn = kernfs_find_and_get_ns(r->kn, name, NULL);  in rdtgroup_kn_mode_restore()
1981 	if (!kn)  in rdtgroup_kn_mode_restore()
1984 	switch (kernfs_type(kn)) {  in rdtgroup_kn_mode_restore()
1986 		parent = kernfs_get_parent(kn);  in rdtgroup_kn_mode_restore()
2001 	ret = kernfs_setattr(kn, &iattr);  in rdtgroup_kn_mode_restore()
2002 	kernfs_put(kn);  in rdtgroup_kn_mode_restore()
2079 	struct kernfs_node *kn;  in mongroup_create_dir()  local
2083 	kn = kernfs_create_dir(parent_kn, name, parent_kn->mode, prgrp);  in mongroup_create_dir()
2084 	if (IS_ERR(kn))  in mongroup_create_dir()
2085 		return PTR_ERR(kn);  in mongroup_create_dir()
2088 		*dest_kn = kn;  in mongroup_create_dir()
2090 	ret = rdtgroup_kn_set_ugid(kn);  in mongroup_create_dir()
2094 	kernfs_activate(kn);  in mongroup_create_dir()
2099 	kernfs_remove(kn);  in mongroup_create_dir()
2290 static struct rdtgroup *kernfs_to_rdtgroup(struct kernfs_node *kn)  in kernfs_to_rdtgroup()  argument
2292 	if (kernfs_type(kn) == KERNFS_DIR) {  in kernfs_to_rdtgroup()
2299 		if (kn == kn_info || kn->parent == kn_info)  in kernfs_to_rdtgroup()
2302 			return kn->priv;  in kernfs_to_rdtgroup()
2304 		return kn->parent->priv;  in kernfs_to_rdtgroup()
2308 static void rdtgroup_kn_get(struct rdtgroup *rdtgrp, struct kernfs_node *kn)  in rdtgroup_kn_get()  argument
2311 	kernfs_break_active_protection(kn);  in rdtgroup_kn_get()
2314 static void rdtgroup_kn_put(struct rdtgroup *rdtgrp, struct kernfs_node *kn)  in rdtgroup_kn_put()  argument
2321 		kernfs_unbreak_active_protection(kn);  in rdtgroup_kn_put()
2324 		kernfs_unbreak_active_protection(kn);  in rdtgroup_kn_put()
2328 struct rdtgroup *rdtgroup_kn_lock_live(struct kernfs_node *kn)  in rdtgroup_kn_lock_live()  argument
2330 	struct rdtgroup *rdtgrp = kernfs_to_rdtgroup(kn);  in rdtgroup_kn_lock_live()
2335 	rdtgroup_kn_get(rdtgrp, kn);  in rdtgroup_kn_lock_live()
2346 void rdtgroup_kn_unlock(struct kernfs_node *kn)  in rdtgroup_kn_unlock()  argument
2348 	struct rdtgroup *rdtgrp = kernfs_to_rdtgroup(kn);  in rdtgroup_kn_unlock()
2354 	rdtgroup_kn_put(rdtgrp, kn);  in rdtgroup_kn_unlock()
2492 	ret = rdtgroup_create_info_dir(rdtgroup_default.kn);  in rdt_get_tree()
2497 		ret = mongroup_create_dir(rdtgroup_default.kn,  in rdt_get_tree()
2503 		ret = mkdir_mondata_all(rdtgroup_default.kn,  in rdt_get_tree()
2759 		kernfs_remove(rdtgrp->kn);  in rmdir_all_sub()
2810 	struct kernfs_node *kn;  in mon_addfile()  local
2813 	kn = __kernfs_create_file(parent_kn, name, 0444,  in mon_addfile()
2816 	if (IS_ERR(kn))  in mon_addfile()
2817 		return PTR_ERR(kn);  in mon_addfile()
2819 	ret = rdtgroup_kn_set_ugid(kn);  in mon_addfile()
2821 		kernfs_remove(kn);  in mon_addfile()
2852 	struct kernfs_node *kn;  in mkdir_mondata_subdir()  local
2860 	kn = kernfs_create_dir(parent_kn, name, parent_kn->mode, prgrp);  in mkdir_mondata_subdir()
2861 	if (IS_ERR(kn))  in mkdir_mondata_subdir()
2862 		return PTR_ERR(kn);  in mkdir_mondata_subdir()
2864 	ret = rdtgroup_kn_set_ugid(kn);  in mkdir_mondata_subdir()
2877 		ret = mon_addfile(kn, mevt->name, priv.priv);  in mkdir_mondata_subdir()
2884 	kernfs_activate(kn);  in mkdir_mondata_subdir()
2888 	kernfs_remove(kn);  in mkdir_mondata_subdir()
2953 	struct kernfs_node *kn;  in mkdir_mondata_all()  local
2959 	ret = mongroup_create_dir(parent_kn, prgrp, "mon_data", &kn);  in mkdir_mondata_all()
2964 		*dest_kn = kn;  in mkdir_mondata_all()
2971 		ret = mkdir_mondata_subdir_alldom(kn, r, prgrp);  in mkdir_mondata_all()
2979 	kernfs_remove(kn);  in mkdir_mondata_all()
3173 	struct kernfs_node *kn;  in mkdir_rdt_prepare()  local
3204 	kn = kernfs_create_dir(parent_kn, name, mode, rdtgrp);  in mkdir_rdt_prepare()
3205 	if (IS_ERR(kn)) {  in mkdir_rdt_prepare()
3206 		ret = PTR_ERR(kn);  in mkdir_rdt_prepare()
3210 	rdtgrp->kn = kn;  in mkdir_rdt_prepare()
3218 	kernfs_get(kn);  in mkdir_rdt_prepare()
3220 	ret = rdtgroup_kn_set_ugid(kn);  in mkdir_rdt_prepare()
3227 	ret = rdtgroup_add_files(kn, files);  in mkdir_rdt_prepare()
3241 		ret = mkdir_mondata_all(kn, rdtgrp, &rdtgrp->mon.mon_data_kn);  in mkdir_rdt_prepare()
3247 	kernfs_activate(kn);  in mkdir_rdt_prepare()
3257 	kernfs_put(rdtgrp->kn);  in mkdir_rdt_prepare()
3258 	kernfs_remove(rdtgrp->kn);  in mkdir_rdt_prepare()
3268 	kernfs_remove(rgrp->kn);  in mkdir_rdt_prepare_clean()
3309 	struct kernfs_node *kn;  in rdtgroup_mkdir_ctrl_mon()  local
3317 	kn = rdtgrp->kn;  in rdtgroup_mkdir_ctrl_mon()
3338 		ret = mongroup_create_dir(kn, rdtgrp, "mon_groups", NULL);  in rdtgroup_mkdir_ctrl_mon()
3368 static bool is_mon_groups(struct kernfs_node *kn, const char *name)  in is_mon_groups()  argument
3370 	return (!strcmp(kn->name, "mon_groups") &&  in is_mon_groups()
3386 	if (rdt_alloc_capable && parent_kn == rdtgroup_default.kn)  in rdtgroup_mkdir()
3426 	kernfs_remove(rdtgrp->kn);  in rdtgroup_rmdir_mon()
3436 	kernfs_remove(rdtgrp->kn);  in rdtgroup_ctrl_remove()
3477 static int rdtgroup_rmdir(struct kernfs_node *kn)  in rdtgroup_rmdir()  argument
3479 	struct kernfs_node *parent_kn = kn->parent;  in rdtgroup_rmdir()
3487 	rdtgrp = rdtgroup_kn_lock_live(kn);  in rdtgroup_rmdir()
3500 	if (rdtgrp->type == RDTCTRL_GROUP && parent_kn == rdtgroup_default.kn &&  in rdtgroup_rmdir()
3509 		 is_mon_groups(parent_kn, kn->name)) {  in rdtgroup_rmdir()
3516 	rdtgroup_kn_unlock(kn);  in rdtgroup_rmdir()
3557 static int rdtgroup_rename(struct kernfs_node *kn,  in rdtgroup_rename()  argument
3565 	rdtgrp = kernfs_to_rdtgroup(kn);  in rdtgroup_rename()
3571 	rdtgroup_kn_get(rdtgrp, kn);  in rdtgroup_rename()
3582 	if (kernfs_type(kn) != KERNFS_DIR ||  in rdtgroup_rename()
3594 	if (rdtgrp->type != RDTMON_GROUP || !kn->parent ||  in rdtgroup_rename()
3595 	    !is_mon_groups(kn->parent, kn->name)) {  in rdtgroup_rename()
3635 	ret = kernfs_rename(kn, new_parent, new_name);  in rdtgroup_rename()
3643 	rdtgroup_kn_put(rdtgrp, kn);  in rdtgroup_rename()
3695 	rdtgroup_default.kn = kernfs_root_to_node(rdt_root);  in rdtgroup_setup_root()
3696 	kernfs_activate(rdtgroup_default.kn);  in rdtgroup_setup_root()