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()
524 	kernfs_put(rdtgrp->kn);  in rdtgroup_remove()
710 	rdtgrp = rdtgroup_kn_lock_live(of->kn);  in rdtgroup_tasks_write()
712 		rdtgroup_kn_unlock(of->kn);  in rdtgroup_tasks_write()
727 	rdtgroup_kn_unlock(of->kn);  in rdtgroup_tasks_write()
750 	rdtgrp = rdtgroup_kn_lock_live(of->kn);  in rdtgroup_tasks_show()
755 	rdtgroup_kn_unlock(of->kn);  in rdtgroup_tasks_show()
822 			   rdtg->kn->name);  in proc_resctrl_show()
828 			seq_printf(s, "%s", crg->kn->name);  in proc_resctrl_show()
864 	struct rdt_resource *r = of->kn->parent->priv;  in rdt_num_closids_show()
873 	struct rdt_resource *r = of->kn->parent->priv;  in rdt_default_ctrl_show()
882 	struct rdt_resource *r = of->kn->parent->priv;  in rdt_min_cbm_bits_show()
891 	struct rdt_resource *r = of->kn->parent->priv;  in rdt_shareable_bits_show()
914 	struct rdt_resource *r = of->kn->parent->priv;  in rdt_bit_usage_show()
992 	struct rdt_resource *r = of->kn->parent->priv;  in rdt_min_bw_show()
1001 	struct rdt_resource *r = of->kn->parent->priv;  in rdt_num_rmids_show()
1011 	struct rdt_resource *r = of->kn->parent->priv;  in rdt_mon_features_show()
1023 	struct rdt_resource *r = of->kn->parent->priv;  in rdt_bw_gran_show()
1032 	struct rdt_resource *r = of->kn->parent->priv;  in rdt_delay_linear_show()
1041 	struct rdt_resource *r = of->kn->parent->priv;  in max_threshold_occ_show()
1051 	struct rdt_resource *r = of->kn->parent->priv;  in rdt_thread_throttle_mode_show()
1064 	struct rdt_resource *r = of->kn->parent->priv;  in max_threshold_occ_write()
1088 	rdtgrp = rdtgroup_kn_lock_live(of->kn);  in rdtgroup_mode_show()
1090 		rdtgroup_kn_unlock(of->kn);  in rdtgroup_mode_show()
1096 	rdtgroup_kn_unlock(of->kn);  in rdtgroup_mode_show()
1319 	rdtgrp = rdtgroup_kn_lock_live(of->kn);  in rdtgroup_mode_write()
1321 		rdtgroup_kn_unlock(of->kn);  in rdtgroup_mode_write()
1371 	rdtgroup_kn_unlock(of->kn);  in rdtgroup_mode_write()
1427 	rdtgrp = rdtgroup_kn_lock_live(of->kn);  in rdtgroup_size_show()
1429 		rdtgroup_kn_unlock(of->kn);  in rdtgroup_size_show()
1473 	rdtgroup_kn_unlock(of->kn);  in rdtgroup_size_show()
1627 static int rdtgroup_add_files(struct kernfs_node *kn, unsigned long fflags)  in rdtgroup_add_files()  argument
1639 			ret = rdtgroup_add_file(kn, rft);  in rdtgroup_add_files()
1650 			kernfs_remove_by_name(kn, rft->name);  in rdtgroup_add_files()
1702 	struct kernfs_node *kn;  in rdtgroup_kn_mode_restrict()  local
1705 	kn = kernfs_find_and_get_ns(r->kn, name, NULL);  in rdtgroup_kn_mode_restrict()
1706 	if (!kn)  in rdtgroup_kn_mode_restrict()
1709 	switch (kernfs_type(kn)) {  in rdtgroup_kn_mode_restrict()
1721 	ret = kernfs_setattr(kn, &iattr);  in rdtgroup_kn_mode_restrict()
1722 	kernfs_put(kn);  in rdtgroup_kn_mode_restrict()
1741 	struct kernfs_node *kn, *parent;  in rdtgroup_kn_mode_restore()  local
1753 	kn = kernfs_find_and_get_ns(r->kn, name, NULL);  in rdtgroup_kn_mode_restore()
1754 	if (!kn)  in rdtgroup_kn_mode_restore()
1757 	switch (kernfs_type(kn)) {  in rdtgroup_kn_mode_restore()
1759 		parent = kernfs_get_parent(kn);  in rdtgroup_kn_mode_restore()
1774 	ret = kernfs_setattr(kn, &iattr);  in rdtgroup_kn_mode_restore()
1775 	kernfs_put(kn);  in rdtgroup_kn_mode_restore()
1849 	struct kernfs_node *kn;  in mongroup_create_dir()  local
1853 	kn = kernfs_create_dir(parent_kn, name, parent_kn->mode, prgrp);  in mongroup_create_dir()
1854 	if (IS_ERR(kn))  in mongroup_create_dir()
1855 		return PTR_ERR(kn);  in mongroup_create_dir()
1858 		*dest_kn = kn;  in mongroup_create_dir()
1860 	ret = rdtgroup_kn_set_ugid(kn);  in mongroup_create_dir()
1864 	kernfs_activate(kn);  in mongroup_create_dir()
1869 	kernfs_remove(kn);  in mongroup_create_dir()
2039 static struct rdtgroup *kernfs_to_rdtgroup(struct kernfs_node *kn)  in kernfs_to_rdtgroup()  argument
2041 	if (kernfs_type(kn) == KERNFS_DIR) {  in kernfs_to_rdtgroup()
2048 		if (kn == kn_info || kn->parent == kn_info)  in kernfs_to_rdtgroup()
2051 			return kn->priv;  in kernfs_to_rdtgroup()
2053 		return kn->parent->priv;  in kernfs_to_rdtgroup()
2057 struct rdtgroup *rdtgroup_kn_lock_live(struct kernfs_node *kn)  in rdtgroup_kn_lock_live()  argument
2059 	struct rdtgroup *rdtgrp = kernfs_to_rdtgroup(kn);  in rdtgroup_kn_lock_live()
2065 	kernfs_break_active_protection(kn);  in rdtgroup_kn_lock_live()
2076 void rdtgroup_kn_unlock(struct kernfs_node *kn)  in rdtgroup_kn_unlock()  argument
2078 	struct rdtgroup *rdtgrp = kernfs_to_rdtgroup(kn);  in rdtgroup_kn_unlock()
2090 		kernfs_unbreak_active_protection(kn);  in rdtgroup_kn_unlock()
2093 		kernfs_unbreak_active_protection(kn);  in rdtgroup_kn_unlock()
2140 	ret = rdtgroup_create_info_dir(rdtgroup_default.kn);  in rdt_get_tree()
2145 		ret = mongroup_create_dir(rdtgroup_default.kn,  in rdt_get_tree()
2151 		ret = mkdir_mondata_all(rdtgroup_default.kn,  in rdt_get_tree()
2402 		kernfs_remove(rdtgrp->kn);  in rmdir_all_sub()
2452 	struct kernfs_node *kn;  in mon_addfile()  local
2455 	kn = __kernfs_create_file(parent_kn, name, 0444,  in mon_addfile()
2458 	if (IS_ERR(kn))  in mon_addfile()
2459 		return PTR_ERR(kn);  in mon_addfile()
2461 	ret = rdtgroup_kn_set_ugid(kn);  in mon_addfile()
2463 		kernfs_remove(kn);  in mon_addfile()
2496 	struct kernfs_node *kn;  in mkdir_mondata_subdir()  local
2504 	kn = kernfs_create_dir(parent_kn, name, parent_kn->mode, prgrp);  in mkdir_mondata_subdir()
2505 	if (IS_ERR(kn))  in mkdir_mondata_subdir()
2506 		return PTR_ERR(kn);  in mkdir_mondata_subdir()
2508 	ret = rdtgroup_kn_set_ugid(kn);  in mkdir_mondata_subdir()
2521 		ret = mon_addfile(kn, mevt->name, priv.priv);  in mkdir_mondata_subdir()
2528 	kernfs_activate(kn);  in mkdir_mondata_subdir()
2532 	kernfs_remove(kn);  in mkdir_mondata_subdir()
2600 	struct kernfs_node *kn;  in mkdir_mondata_all()  local
2606 	ret = mongroup_create_dir(parent_kn, prgrp, "mon_data", &kn);  in mkdir_mondata_all()
2611 		*dest_kn = kn;  in mkdir_mondata_all()
2618 		ret = mkdir_mondata_subdir_alldom(kn, r, prgrp);  in mkdir_mondata_all()
2626 	kernfs_remove(kn);  in mkdir_mondata_all()
2800 	struct kernfs_node *kn;  in mkdir_rdt_prepare()  local
2831 	kn = kernfs_create_dir(parent_kn, name, mode, rdtgrp);  in mkdir_rdt_prepare()
2832 	if (IS_ERR(kn)) {  in mkdir_rdt_prepare()
2833 		ret = PTR_ERR(kn);  in mkdir_rdt_prepare()
2837 	rdtgrp->kn = kn;  in mkdir_rdt_prepare()
2845 	kernfs_get(kn);  in mkdir_rdt_prepare()
2847 	ret = rdtgroup_kn_set_ugid(kn);  in mkdir_rdt_prepare()
2854 	ret = rdtgroup_add_files(kn, files);  in mkdir_rdt_prepare()
2868 		ret = mkdir_mondata_all(kn, rdtgrp, &rdtgrp->mon.mon_data_kn);  in mkdir_rdt_prepare()
2874 	kernfs_activate(kn);  in mkdir_rdt_prepare()
2884 	kernfs_put(rdtgrp->kn);  in mkdir_rdt_prepare()
2885 	kernfs_remove(rdtgrp->kn);  in mkdir_rdt_prepare()
2895 	kernfs_remove(rgrp->kn);  in mkdir_rdt_prepare_clean()
2936 	struct kernfs_node *kn;  in rdtgroup_mkdir_ctrl_mon()  local
2944 	kn = rdtgrp->kn;  in rdtgroup_mkdir_ctrl_mon()
2965 		ret = mongroup_create_dir(kn, rdtgrp, "mon_groups", NULL);  in rdtgroup_mkdir_ctrl_mon()
2995 static bool is_mon_groups(struct kernfs_node *kn, const char *name)  in is_mon_groups()  argument
2997 	return (!strcmp(kn->name, "mon_groups") &&  in is_mon_groups()
3013 	if (rdt_alloc_capable && parent_kn == rdtgroup_default.kn)  in rdtgroup_mkdir()
3026 static int rdtgroup_rmdir_mon(struct kernfs_node *kn, struct rdtgroup *rdtgrp,  in rdtgroup_rmdir_mon()  argument
3054 	kernfs_remove(rdtgrp->kn);  in rdtgroup_rmdir_mon()
3059 static int rdtgroup_ctrl_remove(struct kernfs_node *kn,  in rdtgroup_ctrl_remove()  argument
3065 	kernfs_remove(rdtgrp->kn);  in rdtgroup_ctrl_remove()
3069 static int rdtgroup_rmdir_ctrl(struct kernfs_node *kn, struct rdtgroup *rdtgrp,  in rdtgroup_rmdir_ctrl()  argument
3097 	rdtgroup_ctrl_remove(kn, rdtgrp);  in rdtgroup_rmdir_ctrl()
3107 static int rdtgroup_rmdir(struct kernfs_node *kn)  in rdtgroup_rmdir()  argument
3109 	struct kernfs_node *parent_kn = kn->parent;  in rdtgroup_rmdir()
3117 	rdtgrp = rdtgroup_kn_lock_live(kn);  in rdtgroup_rmdir()
3130 	if (rdtgrp->type == RDTCTRL_GROUP && parent_kn == rdtgroup_default.kn &&  in rdtgroup_rmdir()
3134 			ret = rdtgroup_ctrl_remove(kn, rdtgrp);  in rdtgroup_rmdir()
3136 			ret = rdtgroup_rmdir_ctrl(kn, rdtgrp, tmpmask);  in rdtgroup_rmdir()
3139 		 is_mon_groups(parent_kn, kn->name)) {  in rdtgroup_rmdir()
3140 		ret = rdtgroup_rmdir_mon(kn, rdtgrp, tmpmask);  in rdtgroup_rmdir()
3146 	rdtgroup_kn_unlock(kn);  in rdtgroup_rmdir()
3191 	ret = rdtgroup_add_files(rdt_root->kn, RF_CTRL_BASE);  in rdtgroup_setup_root()
3197 	rdtgroup_default.kn = rdt_root->kn;  in rdtgroup_setup_root()
3198 	kernfs_activate(rdtgroup_default.kn);  in rdtgroup_setup_root()