--- /dev/null	2020-02-11 09:31:42.601809740 +0100
+++ new/src/java.base/linux/classes/jdk/internal/platform/CgroupV1Metrics.java	2020-02-11 18:28:06.865508694 +0100
@@ -0,0 +1,78 @@
+package jdk.internal.platform;
+
+/**
+ * Cgroup v1 Metrics extensions
+ *
+ */
+public class CgroupV1Metrics extends CgroupMetrics implements MetricsCgroupV1 {
+
+    CgroupV1Metrics(MetricsCgroupV1 subsystem) {
+        super((CgroupSubsystem)subsystem);
+    }
+
+    @Override
+    public long getMemoryMaxUsage() {
+        return ((MetricsCgroupV1)subsystem).getMemoryMaxUsage();
+    }
+
+    @Override
+    public long getKernelMemoryFailCount() {
+        return ((MetricsCgroupV1)subsystem).getKernelMemoryFailCount();
+    }
+
+    @Override
+    public long getKernelMemoryLimit() {
+        return ((MetricsCgroupV1)subsystem).getKernelMemoryLimit();
+    }
+
+    @Override
+    public long getKernelMemoryMaxUsage() {
+        return ((MetricsCgroupV1)subsystem).getKernelMemoryMaxUsage();
+    }
+
+    @Override
+    public long getKernelMemoryUsage() {
+        return ((MetricsCgroupV1)subsystem).getKernelMemoryUsage();
+    }
+
+    @Override
+    public long getTcpMemoryFailCount() {
+        return ((MetricsCgroupV1)subsystem).getTcpMemoryFailCount();
+    }
+
+    @Override
+    public long getTcpMemoryLimit() {
+        return ((MetricsCgroupV1)subsystem).getTcpMemoryLimit();
+    }
+
+    @Override
+    public long getTcpMemoryMaxUsage() {
+        return ((MetricsCgroupV1)subsystem).getTcpMemoryMaxUsage();
+    }
+
+    @Override
+    public long getMemoryAndSwapFailCount() {
+        return ((MetricsCgroupV1)subsystem).getMemoryAndSwapFailCount();
+    }
+
+    @Override
+    public long getMemoryAndSwapMaxUsage() {
+        return ((MetricsCgroupV1)subsystem).getMemoryAndSwapMaxUsage();
+    }
+
+    @Override
+    public Boolean isMemoryOOMKillEnabled() {
+        return ((MetricsCgroupV1)subsystem).isMemoryOOMKillEnabled();
+    }
+
+    @Override
+    public double getCpuSetMemoryPressure() {
+        return ((MetricsCgroupV1)subsystem).getCpuSetMemoryPressure();
+    }
+
+    @Override
+    public Boolean isCpuSetMemoryPressureEnabled() {
+        return ((MetricsCgroupV1)subsystem).isCpuSetMemoryPressureEnabled();
+    }
+
+}