--- old/src/share/vm/gc_implementation/g1/g1ParScanThreadState.cpp	2019-02-15 19:02:26.695208595 +0300
+++ new/src/share/vm/gc_implementation/g1/g1ParScanThreadState.cpp	2019-02-15 19:02:26.579212653 +0300
@@ -187,6 +187,21 @@
   }
 }
 
+void G1ParScanThreadState::report_promotion_event(InCSetState const dest_state,
+                                                  oop const old, size_t word_sz, uint age,
+                                                  HeapWord * const obj_ptr,
+                                                  AllocationContext_t context) const {
+  ParGCAllocBuffer* alloc_buf = _g1_par_allocator->alloc_buffer(dest_state, context);
+  if (alloc_buf->contains(obj_ptr)) {
+    _g1h->_gc_tracer_stw->report_promotion_in_new_plab_event(old->klass(), word_sz, age,
+                                                             dest_state.value() == InCSetState::Old,
+                                                             alloc_buf->word_sz());
+  } else {
+    _g1h->_gc_tracer_stw->report_promotion_outside_plab_event(old->klass(), word_sz, age,
+                                                              dest_state.value() == InCSetState::Old);
+  }
+}
+
 InCSetState G1ParScanThreadState::next_state(InCSetState const state, markOop const m, uint& age) {
   if (state.is_young()) {
     age = !m->has_displaced_mark_helper() ? m->age()
@@ -225,6 +240,10 @@
         return _g1h->handle_evacuation_failure_par(this, old);
       }
     }
+    if (_g1h->_gc_tracer_stw->should_report_promotion_events()) {
+      // The events are checked individually as part of the actual commit
+      report_promotion_event(dest_state, old, word_sz, age, obj_ptr, context);
+    }
   }
 
   assert(obj_ptr != NULL, "when we get here, allocation should have succeeded");