src/hotspot/share/gc/g1/g1RemSet.cpp

rev 51898 : 8211228: Zero build is broken after JDK-8196341 (Add JFR events for parallel phases of G1)
Reviewed-by: XXX

@@ -392,17 +392,17 @@
 
     MemRegion const mr(card_start, MIN2(card_start + BOTConstants::N_words, top));
 
     scan_card(mr, region_idx_for_card);
   }
-  event.commit(GCId::current(), _worker_i, G1GCPhaseTimes::phase_name(G1GCPhaseTimes::ScanRS));
+  JFR_ONLY(event.commit(GCId::current(), _worker_i, G1GCPhaseTimes::phase_name(G1GCPhaseTimes::ScanRS));)
 }
 
 void G1ScanRSForRegionClosure::scan_strong_code_roots(HeapRegion* r) {
-  EventGCPhaseParallel event;
+  JFR_ONLY(EventGCPhaseParallel event;)
   r->strong_code_roots_do(_pss->closures()->weak_codeblobs());
-  event.commit(GCId::current(), _worker_i, G1GCPhaseTimes::phase_name(G1GCPhaseTimes::CodeRoots));
+  JFR_ONLY(event.commit(GCId::current(), _worker_i, G1GCPhaseTimes::phase_name(G1GCPhaseTimes::CodeRoots));)
 }
 
 bool G1ScanRSForRegionClosure::do_heap_region(HeapRegion* r) {
   assert(r->in_collection_set(),
          "Should only be called on elements of the collection set but region %u is not.",