diff -r d0b85f02898f -r 8e72621ca186 hotspot/src/share/vm/gc/g1/g1CollectedHeap.cpp
--- a/hotspot/src/share/vm/gc/g1/g1CollectedHeap.cpp	Wed Jun 03 13:29:53 2015 +0200
+++ b/hotspot/src/share/vm/gc/g1/g1CollectedHeap.cpp	Wed Jun 03 08:49:34 2015 +0900
@@ -1183,7 +1183,7 @@
     IsGCActiveMark x;
 
     // Timing
-    assert(gc_cause() != GCCause::_java_lang_system_gc || explicit_gc, "invariant");
+    assert(!GCCause::is_user_requested_gc(gc_cause()) || explicit_gc, "invariant");
     TraceCPUTime tcpu(G1Log::finer(), true, gclog_or_tty);
 
     {
@@ -2199,6 +2199,7 @@
   switch (cause) {
     case GCCause::_gc_locker:               return GCLockerInvokesConcurrent;
     case GCCause::_java_lang_system_gc:     return ExplicitGCInvokesConcurrent;
+    case GCCause::_dcmd_gc_run:             return ExplicitGCInvokesConcurrent;
     case GCCause::_g1_humongous_allocation: return true;
     case GCCause::_update_allocation_context_stats_inc: return true;
     case GCCause::_wb_conc_mark:            return true;