--- old/src/share/vm/gc/g1/vm_operations_g1.cpp	2015-09-09 16:12:51.955861823 +0200
+++ new/src/share/vm/gc/g1/vm_operations_g1.cpp	2015-09-09 16:12:51.843861827 +0200
@@ -26,7 +26,6 @@
 #include "gc/g1/concurrentMarkThread.inline.hpp"
 #include "gc/g1/g1CollectedHeap.inline.hpp"
 #include "gc/g1/g1CollectorPolicy.hpp"
-#include "gc/shared/gcId.hpp"
 #include "gc/g1/g1Log.hpp"
 #include "gc/g1/vm_operations_g1.hpp"
 #include "gc/shared/gcTimer.hpp"
@@ -228,7 +227,6 @@
 void VM_CGC_Operation::doit() {
   TraceCPUTime tcpu(G1Log::finer(), true, gclog_or_tty);
   G1CollectedHeap* g1h = G1CollectedHeap::heap();
-  GCIdMark gc_id_mark(_gc_id);
   GCTraceTime t(_printGCMessage, G1Log::fine(), true, g1h->gc_timer_cm());
   IsGCActiveMark x;
   _cl->do_void();