--- a/hotspot/src/share/vm/gc/shared/vmGCOperations.cpp	Fri Jan 01 17:08:38 2016 +0000
+++ b/hotspot/src/share/vm/gc/shared/vmGCOperations.cpp	Mon Jan 04 11:27:02 2016 +0100
@@ -25,6 +25,8 @@
 #include "precompiled.hpp"
 #include "classfile/classLoader.hpp"
 #include "classfile/javaClasses.hpp"
+#include "gc/shared/allocTracer.hpp"
+#include "gc/shared/gcId.hpp"
 #include "gc/shared/gcLocker.inline.hpp"
 #include "gc/shared/genCollectedHeap.hpp"
 #include "gc/shared/vmGCOperations.hpp"
@@ -188,6 +190,18 @@
   gch->do_full_collection(gch->must_clear_all_soft_refs(), _max_generation);
 }
 
+VM_CollectForMetadataAllocation::VM_CollectForMetadataAllocation(ClassLoaderData* loader_data,
+                                                                 size_t size,
+                                                                 Metaspace::MetadataType mdtype,
+                                                                 uint gc_count_before,
+                                                                 uint full_gc_count_before,
+                                                                 GCCause::Cause gc_cause)
+    : VM_GC_Operation(gc_count_before, gc_cause, full_gc_count_before, true),
+      _loader_data(loader_data), _size(size), _mdtype(mdtype), _result(NULL) {
+  assert(_size != 0, "An allocation should always be requested with this operation.");
+  AllocTracer::send_allocation_requiring_gc_event(_size * HeapWordSize, GCId::peek());
+}
+
 // Returns true iff concurrent GCs unloads metadata.
 bool VM_CollectForMetadataAllocation::initiate_concurrent_GC() {
 #if INCLUDE_ALL_GCS
@@ -279,3 +293,11 @@
     set_gc_locked();
   }
 }
+
+VM_CollectForAllocation::VM_CollectForAllocation(size_t word_size, uint gc_count_before, GCCause::Cause cause)
+    : VM_GC_Operation(gc_count_before, cause), _result(NULL), _word_size(word_size) {
+  // Only report if operation was really caused by an allocation.
+  if (_word_size != 0) {
+    AllocTracer::send_allocation_requiring_gc_event(_word_size * HeapWordSize, GCId::peek());
+  }
+}