--- a/hotspot/src/share/vm/gc_interface/gcCause.cpp	Thu Feb 05 14:57:52 2015 -0800
+++ b/hotspot/src/share/vm/gc_interface/gcCause.cpp	Fri Feb 06 16:24:25 2015 +0100
@@ -103,9 +103,6 @@
     case _last_ditch_collection:
       return "Last ditch collection";
 
-    case _dcmd_gc_run:
-      return "Diagnostic Command";
-
     case _last_gc_cause:
       return "ILLEGAL VALUE - last gc cause - ILLEGAL VALUE";
 

--- a/hotspot/src/share/vm/gc_interface/gcCause.hpp	Thu Feb 05 14:57:52 2015 -0800
+++ b/hotspot/src/share/vm/gc_interface/gcCause.hpp	Fri Feb 06 16:24:25 2015 +0100
@@ -74,9 +74,6 @@
     _g1_humongous_allocation,
 
     _last_ditch_collection,
-
-    _dcmd_gc_run,
-
     _last_gc_cause
   };
 

--- a/hotspot/src/share/vm/services/diagnosticCommand.cpp	Thu Feb 05 14:57:52 2015 -0800
+++ b/hotspot/src/share/vm/services/diagnosticCommand.cpp	Fri Feb 06 16:24:25 2015 +0100
@@ -267,7 +267,7 @@
 
 void SystemGCDCmd::execute(DCmdSource source, TRAPS) {
   if (!DisableExplicitGC) {
-    Universe::heap()->collect(GCCause::_dcmd_gc_run);
+    Universe::heap()->collect(GCCause::_java_lang_system_gc);
   } else {
     output()->print_cr("Explicit GC is disabled, no GC has been performed.");
   }