diff --git a/core/java/android/app/IActivityManager.aidl b/core/java/android/app/IActivityManager.aidl
index 833bfed573b2d..496ad0c99dfe6 100644
--- a/core/java/android/app/IActivityManager.aidl
+++ b/core/java/android/app/IActivityManager.aidl
@@ -673,4 +673,9 @@ interface IActivityManager {
      * @param state The customized state data
      */
     void setProcessStateSummary(in byte[] state);
+
+    /**
+     * Return whether the app freezer is supported (true) or not (false) by this system.
+     */
+    boolean isAppFreezerSupported();
 }
diff --git a/services/core/java/com/android/server/am/ActivityManagerService.java b/services/core/java/com/android/server/am/ActivityManagerService.java
index 0bd134c8dfaca..edf986a763ec6 100644
--- a/services/core/java/com/android/server/am/ActivityManagerService.java
+++ b/services/core/java/com/android/server/am/ActivityManagerService.java
@@ -20171,4 +20171,15 @@ public class ActivityManagerService extends IActivityManager.Stub
             mUsageStatsService.reportLocusUpdate(activity, userId, locusId, appToken);
         }
     }
+
+    @Override
+    public boolean isAppFreezerSupported() {
+        final long token = Binder.clearCallingIdentity();
+
+        try {
+            return mOomAdjuster.mCachedAppOptimizer.isFreezerSupported();
+        } finally {
+            Binder.restoreCallingIdentity(token);
+        }
+    }
 }
diff --git a/services/core/java/com/android/server/am/CachedAppOptimizer.java b/services/core/java/com/android/server/am/CachedAppOptimizer.java
index 86d9028f53dca..35d2653483b95 100644
--- a/services/core/java/com/android/server/am/CachedAppOptimizer.java
+++ b/services/core/java/com/android/server/am/CachedAppOptimizer.java
@@ -407,7 +407,7 @@ public final class CachedAppOptimizer {
     /**
      * Determines whether the freezer is correctly supported by this system
      */
-    public boolean isFreezerSupported() {
+    public static boolean isFreezerSupported() {
         boolean supported = false;
         FileReader fr = null;