Documentation/admin-guide/cgroup-v2.rst

249 Initially, only the root cgroup exists to which all processes belong.
839 	A read-write single value file which exists on non-root
861 	A read-write new-line separated values file which exists on
887 	A read-write new-line separated values file which exists on
912 	A read-only space separated values file which exists on all
919 	A read-write space separated values file which exists on all
934 	A read-only flat-keyed file which exists on non-root cgroups.
978 	A read-write single value file which exists on non-root cgroups.
1004 	A write-only single value file which exists in non-root cgroups.
1029 	The reason this control attribute exists is that PSI accounts stalls for
1076 	This file exists whether the controller is enabled or not.
1093 	A read-write single value file which exists on non-root
1103 	A read-write single value file which exists on non-root
1115 	A read-write two value file which exists on non-root cgroups.
1127 	A read-write single value file which exists on non-root
1139         A read-write single value file which exists on non-root cgroups.
1154         A read-write single value file which exists on non-root cgroups.
1165 	A read-write single value file which exists on non-root cgroups.
1207 	A read-only single value file which exists on non-root
1214 	A read-write single value file which exists on non-root
1240 	A read-write single value file which exists on non-root
1263 	A read-write single value file which exists on non-root
1277 	A read-write single value file which exists on non-root
1294 	A write-only nested-keyed file which exists for all cgroups.
1322 	A read-only single value file which exists on non-root
1329 	A read-write single value file which exists on non-root
1347 	A read-only flat-keyed file which exists on non-root cgroups.
1397 	A read-only flat-keyed file which exists on non-root cgroups.
1595 	A read-only nested-keyed file which exists on non-root cgroups.
1620 	A read-only single value file which exists on non-root
1627 	A read-write single value file which exists on non-root
1643 	A read-only single value file which exists on non-root
1650 	A read-write single value file which exists on non-root
1657 	A read-only flat-keyed file which exists on non-root cgroups.
1682 	A read-only single value file which exists on non-root
1689 	A read-write single value file which exists on non-root
1795 	A read-write nested-keyed file which exists only on the root
1850 	A read-write nested-keyed file which exists only on the root
1892 	A read-write flat-keyed file which exists on non-root cgroups.
1912 	A read-write nested-keyed file which exists on non-root
2178 	A read-write single value file which exists on non-root
2184 	A read-only single value file which exists on all cgroups.
2217 	A read-write multiple values file which exists on non-root
2239 	A read-only multiple values file which exists on all
2256 	A read-write multiple values file which exists on non-root
2290 	A read-only multiple values file which exists on all
2306 	A read-write multiple values file which exists on non-root
2336 	A read-only multiple values file which exists on all non-root
2356 	A read-write single value file which exists on non-root
2501 	A readwrite nested-keyed file that exists for all the cgroups
2523 	It exists for all the cgroup except root.
2540 	Show current usage for "hugepagesize" hugetlb.  It exists for all
2545 	The default value is "max".  It exists for all the cgroup except root.
2548 	A read-only flat-keyed file which exists on non-root cgroups.
2622 	A read-only flat-keyed file which exists on non-root cgroups. The