--- a/src/hotspot/share/gc/g1/g1RemSet.cpp	Wed Jul 24 11:49:39 2019 +0200
+++ b/src/hotspot/share/gc/g1/g1RemSet.cpp	Wed Jul 24 11:49:39 2019 +0200
@@ -1147,6 +1147,9 @@
       G1GCParPhaseTimesTracker x(p, G1GCPhaseTimes::MergeHCC, worker_id);
       G1MergeLogBufferCardsClosure cl(g1h, _scan_state);
       g1h->iterate_hcc_closure(&cl, worker_id);
+
+      p->record_thread_work_item(G1GCPhaseTimes::MergeHCC, worker_id, cl.cards_dirty(), G1GCPhaseTimes::MergeHCCDirtyCards);
+      p->record_thread_work_item(G1GCPhaseTimes::MergeHCC, worker_id, cl.cards_skipped(), G1GCPhaseTimes::MergeHCCSkippedCards);
     }
 
     // Now apply the closure to all remaining log entries.