--- old/src/share/vm/gc_implementation/concurrentMarkSweep/concurrentMarkSweepGeneration.cpp	2012-05-08 16:12:32.299252500 +0200
+++ new/src/share/vm/gc_implementation/concurrentMarkSweep/concurrentMarkSweepGeneration.cpp	2012-05-08 16:12:31.257192900 +0200
@@ -6332,10 +6332,10 @@
   )
 }
 
-void CMSCollector::do_CMS_operation(CMS_op_type op) {
+void CMSCollector::do_CMS_operation(CMS_op_type op, GCCause::Cause gc_cause) {
   gclog_or_tty->date_stamp(PrintGC && PrintGCDateStamps);
   TraceCPUTime tcpu(PrintGCDetails, true, gclog_or_tty);
-  TraceTime t("GC", PrintGC, !PrintGCDetails, gclog_or_tty);
+  TraceTime t(GCCauseString("GC", gc_cause), PrintGC, !PrintGCDetails, gclog_or_tty);
   TraceCollectorStats tcs(counters());
 
   switch (op) {