--- /dev/null	2019-12-20 09:34:50.824189971 +0100
+++ new/src/java.base/linux/classes/jdk/internal/platform/cgroupv2/CgroupV2SubsystemController.java	2019-12-20 15:40:31.133804660 +0100
@@ -0,0 +1,49 @@
+/*
+ * Copyright (c) 2019, Red Hat Inc.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+package jdk.internal.platform.cgroupv2;
+
+import java.nio.file.Paths;
+
+import jdk.internal.platform.CgroupSubsystemController;
+import jdk.internal.platform.Metrics;
+
+public class CgroupV2SubsystemController implements CgroupSubsystemController {
+
+    private final String path;
+
+    public CgroupV2SubsystemController(String mountPath, String cgroupPath) {
+        this.path = Paths.get(mountPath, cgroupPath).toString();
+    }
+
+    @Override
+    public String path() {
+        return path;
+    }
+
+    public static long convertStringToLong(String strval) {
+        return CgroupSubsystemController.convertStringToLong(strval, Metrics.LONG_RETVAL_UNLIMITED);
+    }
+}