--- old/src/share/vm/gc/g1/g1CollectedHeap.cpp	2017-07-10 14:17:02.280534387 +0200
+++ new/src/share/vm/gc/g1/g1CollectedHeap.cpp	2017-07-10 14:17:02.179531254 +0200
@@ -1660,6 +1660,14 @@
   return result;
 }
 
+jint G1CollectedHeap::initialize_concurrent_refinement() {
+  _refine_cte_cl = new RefineCardTableEntryClosure();
+
+  jint ecode = JNI_OK;
+  _cg1r = ConcurrentG1Refine::create(_refine_cte_cl, &ecode);
+  return ecode;
+}
+
 jint G1CollectedHeap::initialize() {
   CollectedHeap::pre_initialize();
   os::enable_vtime();
@@ -1808,11 +1816,8 @@
                                                G1SATBProcessCompletedThreshold,
                                                Shared_SATB_Q_lock);
 
-  _refine_cte_cl = new RefineCardTableEntryClosure();
-
-  jint ecode = JNI_OK;
-  _cg1r = ConcurrentG1Refine::create(_refine_cte_cl, &ecode);
-  if (_cg1r == NULL) {
+  jint ecode = initialize_concurrent_refinement();
+  if (ecode != JNI_OK) {
     return ecode;
   }
   
@@ -1858,8 +1863,6 @@
 
   _collection_set.initialize(max_regions());
 
-  _g1_rem_set->initialize_periodic_summary_info();
-
   return JNI_OK;
 }