diff --git a/core/api/system-current.txt b/core/api/system-current.txt
index 328d17758ca5c..9f41c139a46a1 100644
--- a/core/api/system-current.txt
+++ b/core/api/system-current.txt
@@ -7920,6 +7920,7 @@ package android.provider {
     field public static final String NAMESPACE_ACTIVITY_MANAGER = "activity_manager";
     field public static final String NAMESPACE_ACTIVITY_MANAGER_NATIVE_BOOT = "activity_manager_native_boot";
     field public static final String NAMESPACE_APP_COMPAT = "app_compat";
+    field public static final String NAMESPACE_APP_HIBERNATION = "app_hibernation";
     field public static final String NAMESPACE_ATTENTION_MANAGER_SERVICE = "attention_manager_service";
     field public static final String NAMESPACE_AUTOFILL = "autofill";
     field public static final String NAMESPACE_BIOMETRICS = "biometrics";
diff --git a/core/java/android/provider/DeviceConfig.java b/core/java/android/provider/DeviceConfig.java
index e7e2c619ee6a6..bd84c84f0430f 100644
--- a/core/java/android/provider/DeviceConfig.java
+++ b/core/java/android/provider/DeviceConfig.java
@@ -91,6 +91,13 @@ public final class DeviceConfig {
     @SystemApi
     public static final String NAMESPACE_APP_COMPAT = "app_compat";
 
+    /**
+     * Namespace for all app hibernation related features.
+     * @hide
+     */
+    @SystemApi
+    public static final String NAMESPACE_APP_HIBERNATION = "app_hibernation";
+
     /**
      * Namespace for AttentionManagerService related features.
      *
diff --git a/services/core/java/com/android/server/apphibernation/AppHibernationConstants.java b/services/core/java/com/android/server/apphibernation/AppHibernationConstants.java
new file mode 100644
index 0000000000000..9d43a39072bf7
--- /dev/null
+++ b/services/core/java/com/android/server/apphibernation/AppHibernationConstants.java
@@ -0,0 +1,28 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.server.apphibernation;
+
+/**
+ * Flags and constants that modify app hibernation behavior.
+ */
+final class AppHibernationConstants {
+
+    private AppHibernationConstants() {}
+
+    // Device config feature flag for app hibernation
+    static final String KEY_APP_HIBERNATION_ENABLED = "app_hibernation_enabled";
+}