192 static int rdtgroup_kn_set_ugid(struct kernfs_node *kn)  in rdtgroup_kn_set_ugid()  argument
202 	return kernfs_setattr(kn, &iattr);  in rdtgroup_kn_set_ugid()
207 	struct kernfs_node *kn;  in rdtgroup_add_file()  local
210 	kn = __kernfs_create_file(parent_kn, rft->name, rft->mode,  in rdtgroup_add_file()
213 	if (IS_ERR(kn))  in rdtgroup_add_file()
214 		return PTR_ERR(kn);  in rdtgroup_add_file()
216 	ret = rdtgroup_kn_set_ugid(kn);  in rdtgroup_add_file()
218 		kernfs_remove(kn);  in rdtgroup_add_file()
228 	struct rftype *rft = of->kn->priv;  in rdtgroup_seqfile_show()
238 	struct rftype *rft = of->kn->priv;  in rdtgroup_file_write()
259 	struct rftype *rft = of->kn->priv;  in is_cpu_list()
271 	rdtgrp = rdtgroup_kn_lock_live(of->kn);  in rdtgroup_cpus_show()
292 	rdtgroup_kn_unlock(of->kn);  in rdtgroup_cpus_show()
466 	rdtgrp = rdtgroup_kn_lock_live(of->kn);  in rdtgroup_cpus_write()
505 	rdtgroup_kn_unlock(of->kn);  in rdtgroup_cpus_write()
527 	kernfs_put(rdtgrp->kn);  in rdtgroup_remove()
694 	rdtgrp = rdtgroup_kn_lock_live(of->kn);  in rdtgroup_tasks_write()
696 		rdtgroup_kn_unlock(of->kn);  in rdtgroup_tasks_write()
711 	rdtgroup_kn_unlock(of->kn);  in rdtgroup_tasks_write()
734 	rdtgrp = rdtgroup_kn_lock_live(of->kn);  in rdtgroup_tasks_show()
739 	rdtgroup_kn_unlock(of->kn);  in rdtgroup_tasks_show()
806 			   rdtg->kn->name);  in proc_resctrl_show()
812 			seq_printf(s, "%s", crg->kn->name);  in proc_resctrl_show()
848 	struct resctrl_schema *s = of->kn->parent->priv;  in rdt_num_closids_show()
857 	struct resctrl_schema *s = of->kn->parent->priv;  in rdt_default_ctrl_show()
867 	struct resctrl_schema *s = of->kn->parent->priv;  in rdt_min_cbm_bits_show()
877 	struct resctrl_schema *s = of->kn->parent->priv;  in rdt_shareable_bits_show()
901 	struct resctrl_schema *s = of->kn->parent->priv;  in rdt_bit_usage_show()
981 	struct resctrl_schema *s = of->kn->parent->priv;  in rdt_min_bw_show()
991 	struct rdt_resource *r = of->kn->parent->priv;  in rdt_num_rmids_show()
1001 	struct rdt_resource *r = of->kn->parent->priv;  in rdt_mon_features_show()
1013 	struct resctrl_schema *s = of->kn->parent->priv;  in rdt_bw_gran_show()
1023 	struct resctrl_schema *s = of->kn->parent->priv;  in rdt_delay_linear_show()
1041 	struct resctrl_schema *s = of->kn->parent->priv;  in rdt_thread_throttle_mode_show()
1078 	rdtgrp = rdtgroup_kn_lock_live(of->kn);  in rdtgroup_mode_show()
1080 		rdtgroup_kn_unlock(of->kn);  in rdtgroup_mode_show()
1086 	rdtgroup_kn_unlock(of->kn);  in rdtgroup_mode_show()
1253 	rdtgrp = rdtgroup_kn_lock_live(of->kn);  in rdtgroup_mode_write()
1255 		rdtgroup_kn_unlock(of->kn);  in rdtgroup_mode_write()
1305 	rdtgroup_kn_unlock(of->kn);  in rdtgroup_mode_write()
1364 	rdtgrp = rdtgroup_kn_lock_live(of->kn);  in rdtgroup_size_show()
1366 		rdtgroup_kn_unlock(of->kn);  in rdtgroup_size_show()
1417 	rdtgroup_kn_unlock(of->kn);  in rdtgroup_size_show()
1571 static int rdtgroup_add_files(struct kernfs_node *kn, unsigned long fflags)  in rdtgroup_add_files()  argument
1583 			ret = rdtgroup_add_file(kn, rft);  in rdtgroup_add_files()
1594 			kernfs_remove_by_name(kn, rft->name);  in rdtgroup_add_files()
1646 	struct kernfs_node *kn;  in rdtgroup_kn_mode_restrict()  local
1649 	kn = kernfs_find_and_get_ns(r->kn, name, NULL);  in rdtgroup_kn_mode_restrict()
1650 	if (!kn)  in rdtgroup_kn_mode_restrict()
1653 	switch (kernfs_type(kn)) {  in rdtgroup_kn_mode_restrict()
1665 	ret = kernfs_setattr(kn, &iattr);  in rdtgroup_kn_mode_restrict()
1666 	kernfs_put(kn);  in rdtgroup_kn_mode_restrict()
1685 	struct kernfs_node *kn, *parent;  in rdtgroup_kn_mode_restore()  local
1697 	kn = kernfs_find_and_get_ns(r->kn, name, NULL);  in rdtgroup_kn_mode_restore()
1698 	if (!kn)  in rdtgroup_kn_mode_restore()
1701 	switch (kernfs_type(kn)) {  in rdtgroup_kn_mode_restore()
1703 		parent = kernfs_get_parent(kn);  in rdtgroup_kn_mode_restore()
1718 	ret = kernfs_setattr(kn, &iattr);  in rdtgroup_kn_mode_restore()
1719 	kernfs_put(kn);  in rdtgroup_kn_mode_restore()
1796 	struct kernfs_node *kn;  in mongroup_create_dir()  local
1800 	kn = kernfs_create_dir(parent_kn, name, parent_kn->mode, prgrp);  in mongroup_create_dir()
1801 	if (IS_ERR(kn))  in mongroup_create_dir()
1802 		return PTR_ERR(kn);  in mongroup_create_dir()
1805 		*dest_kn = kn;  in mongroup_create_dir()
1807 	ret = rdtgroup_kn_set_ugid(kn);  in mongroup_create_dir()
1811 	kernfs_activate(kn);  in mongroup_create_dir()
1816 	kernfs_remove(kn);  in mongroup_create_dir()
2011 static struct rdtgroup *kernfs_to_rdtgroup(struct kernfs_node *kn)  in kernfs_to_rdtgroup()  argument
2013 	if (kernfs_type(kn) == KERNFS_DIR) {  in kernfs_to_rdtgroup()
2020 		if (kn == kn_info || kn->parent == kn_info)  in kernfs_to_rdtgroup()
2023 			return kn->priv;  in kernfs_to_rdtgroup()
2025 		return kn->parent->priv;  in kernfs_to_rdtgroup()
2029 struct rdtgroup *rdtgroup_kn_lock_live(struct kernfs_node *kn)  in rdtgroup_kn_lock_live()  argument
2031 	struct rdtgroup *rdtgrp = kernfs_to_rdtgroup(kn);  in rdtgroup_kn_lock_live()
2037 	kernfs_break_active_protection(kn);  in rdtgroup_kn_lock_live()
2048 void rdtgroup_kn_unlock(struct kernfs_node *kn)  in rdtgroup_kn_unlock()  argument
2050 	struct rdtgroup *rdtgrp = kernfs_to_rdtgroup(kn);  in rdtgroup_kn_unlock()
2062 		kernfs_unbreak_active_protection(kn);  in rdtgroup_kn_unlock()
2065 		kernfs_unbreak_active_protection(kn);  in rdtgroup_kn_unlock()
2204 	ret = rdtgroup_create_info_dir(rdtgroup_default.kn);  in rdt_get_tree()
2209 		ret = mongroup_create_dir(rdtgroup_default.kn,  in rdt_get_tree()
2215 		ret = mkdir_mondata_all(rdtgroup_default.kn,  in rdt_get_tree()
2467 		kernfs_remove(rdtgrp->kn);  in rmdir_all_sub()
2518 	struct kernfs_node *kn;  in mon_addfile()  local
2521 	kn = __kernfs_create_file(parent_kn, name, 0444,  in mon_addfile()
2524 	if (IS_ERR(kn))  in mon_addfile()
2525 		return PTR_ERR(kn);  in mon_addfile()
2527 	ret = rdtgroup_kn_set_ugid(kn);  in mon_addfile()
2529 		kernfs_remove(kn);  in mon_addfile()
2560 	struct kernfs_node *kn;  in mkdir_mondata_subdir()  local
2568 	kn = kernfs_create_dir(parent_kn, name, parent_kn->mode, prgrp);  in mkdir_mondata_subdir()
2569 	if (IS_ERR(kn))  in mkdir_mondata_subdir()
2570 		return PTR_ERR(kn);  in mkdir_mondata_subdir()
2572 	ret = rdtgroup_kn_set_ugid(kn);  in mkdir_mondata_subdir()
2585 		ret = mon_addfile(kn, mevt->name, priv.priv);  in mkdir_mondata_subdir()
2592 	kernfs_activate(kn);  in mkdir_mondata_subdir()
2596 	kernfs_remove(kn);  in mkdir_mondata_subdir()
2661 	struct kernfs_node *kn;  in mkdir_mondata_all()  local
2667 	ret = mongroup_create_dir(parent_kn, prgrp, "mon_data", &kn);  in mkdir_mondata_all()
2672 		*dest_kn = kn;  in mkdir_mondata_all()
2679 		ret = mkdir_mondata_subdir_alldom(kn, r, prgrp);  in mkdir_mondata_all()
2687 	kernfs_remove(kn);  in mkdir_mondata_all()
2876 	struct kernfs_node *kn;  in mkdir_rdt_prepare()  local
2907 	kn = kernfs_create_dir(parent_kn, name, mode, rdtgrp);  in mkdir_rdt_prepare()
2908 	if (IS_ERR(kn)) {  in mkdir_rdt_prepare()
2909 		ret = PTR_ERR(kn);  in mkdir_rdt_prepare()
2913 	rdtgrp->kn = kn;  in mkdir_rdt_prepare()
2921 	kernfs_get(kn);  in mkdir_rdt_prepare()
2923 	ret = rdtgroup_kn_set_ugid(kn);  in mkdir_rdt_prepare()
2930 	ret = rdtgroup_add_files(kn, files);  in mkdir_rdt_prepare()
2944 		ret = mkdir_mondata_all(kn, rdtgrp, &rdtgrp->mon.mon_data_kn);  in mkdir_rdt_prepare()
2950 	kernfs_activate(kn);  in mkdir_rdt_prepare()
2960 	kernfs_put(rdtgrp->kn);  in mkdir_rdt_prepare()
2961 	kernfs_remove(rdtgrp->kn);  in mkdir_rdt_prepare()
2971 	kernfs_remove(rgrp->kn);  in mkdir_rdt_prepare_clean()
3012 	struct kernfs_node *kn;  in rdtgroup_mkdir_ctrl_mon()  local
3020 	kn = rdtgrp->kn;  in rdtgroup_mkdir_ctrl_mon()
3041 		ret = mongroup_create_dir(kn, rdtgrp, "mon_groups", NULL);  in rdtgroup_mkdir_ctrl_mon()
3071 static bool is_mon_groups(struct kernfs_node *kn, const char *name)  in is_mon_groups()  argument
3073 	return (!strcmp(kn->name, "mon_groups") &&  in is_mon_groups()
3089 	if (rdt_alloc_capable && parent_kn == rdtgroup_default.kn)  in rdtgroup_mkdir()
3129 	kernfs_remove(rdtgrp->kn);  in rdtgroup_rmdir_mon()
3139 	kernfs_remove(rdtgrp->kn);  in rdtgroup_ctrl_remove()
3180 static int rdtgroup_rmdir(struct kernfs_node *kn)  in rdtgroup_rmdir()  argument
3182 	struct kernfs_node *parent_kn = kn->parent;  in rdtgroup_rmdir()
3190 	rdtgrp = rdtgroup_kn_lock_live(kn);  in rdtgroup_rmdir()
3203 	if (rdtgrp->type == RDTCTRL_GROUP && parent_kn == rdtgroup_default.kn &&  in rdtgroup_rmdir()
3212 		 is_mon_groups(parent_kn, kn->name)) {  in rdtgroup_rmdir()
3219 	rdtgroup_kn_unlock(kn);  in rdtgroup_rmdir()
3270 	rdtgroup_default.kn = kernfs_root_to_node(rdt_root);  in rdtgroup_setup_root()
3271 	kernfs_activate(rdtgroup_default.kn);  in rdtgroup_setup_root()