8326127: JFR: Add SafepointCleanupTask to hardToTestEvents of TestLookForUntestedEvents

Reviewed-by: mgronlun

Author: D-D-H

test/jdk/jdk/jfr/event/metadata/TestLookForUntestedEvents.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2018, 2023, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2018, 2024, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -56,7 +56,8 @@ public class TestLookForUntestedEvents {
         Arrays.asList(
             "DataLoss", "IntFlag", "ReservedStackActivation", "NativeLibraryUnload",
             "DoubleFlag", "UnsignedLongFlagChanged", "IntFlagChanged",
-            "UnsignedIntFlag", "UnsignedIntFlagChanged", "DoubleFlagChanged")
+            "UnsignedIntFlag", "UnsignedIntFlagChanged", "DoubleFlagChanged",
+            "SafepointCleanupTask")
     );
 
     // GC uses specific framework to test the events, instead of using event names literally.

test/jdk/jdk/jfr/event/runtime/TestSafepointEvents.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2013, 2023, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2013, 2024, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -52,7 +52,6 @@ public class TestSafepointEvents {
     static final String[] EVENT_NAMES = new String[] {
         EventNames.SafepointBegin,
         EventNames.SafepointStateSynchronization,
-        // EventNames.SafepointCleanupTask,
         EventNames.SafepointCleanup,
         EventNames.SafepointEnd
     };