--- old/src/share/vm/gc/g1/g1ParScanThreadState.hpp	2017-05-05 14:07:49.592559030 +0200
+++ new/src/share/vm/gc/g1/g1ParScanThreadState.hpp	2017-05-05 14:07:49.487555919 +0200
@@ -198,8 +198,6 @@
   G1CollectedHeap* _g1h;
   G1ParScanThreadState** _states;
   size_t* _surviving_young_words_total;
-  size_t* _cards_scanned;
-  size_t _total_cards_scanned;
   size_t _young_cset_length;
   uint _n_workers;
   bool _flushed;
@@ -209,8 +207,6 @@
       _g1h(g1h),
       _states(NEW_C_HEAP_ARRAY(G1ParScanThreadState*, n_workers, mtGC)),
       _surviving_young_words_total(NEW_C_HEAP_ARRAY(size_t, young_cset_length, mtGC)),
-      _cards_scanned(NEW_C_HEAP_ARRAY(size_t, n_workers, mtGC)),
-      _total_cards_scanned(0),
       _young_cset_length(young_cset_length),
       _n_workers(n_workers),
       _flushed(false) {
@@ -218,22 +214,18 @@
       _states[i] = NULL;
     }
     memset(_surviving_young_words_total, 0, young_cset_length * sizeof(size_t));
-    memset(_cards_scanned, 0, n_workers * sizeof(size_t));
   }
 
   ~G1ParScanThreadStateSet() {
     assert(_flushed, "thread local state from the per thread states should have been flushed");
     FREE_C_HEAP_ARRAY(G1ParScanThreadState*, _states);
     FREE_C_HEAP_ARRAY(size_t, _surviving_young_words_total);
-    FREE_C_HEAP_ARRAY(size_t, _cards_scanned);
   }
 
   void flush();
 
   G1ParScanThreadState* state_for_worker(uint worker_id);
 
-  void add_cards_scanned(uint worker_id, size_t cards_scanned);
-  size_t total_cards_scanned() const;
   const size_t* surviving_young_words() const;
 
  private: