diff -r df6f2350edfa -r 6530de931b8e src/hotspot/share/gc/g1/heapRegionManager.hpp
--- a/src/hotspot/share/gc/g1/heapRegionManager.hpp	Wed Nov 13 10:49:32 2019 -0800
+++ b/src/hotspot/share/gc/g1/heapRegionManager.hpp	Wed Nov 13 10:51:41 2019 -0800
@@ -192,6 +192,10 @@
     return _free_list.length();
   }
 
+  uint num_free_regions(uint node_index) const {
+    return _free_list.length(node_index);
+  }
+
   size_t total_free_bytes() const {
     return num_free_regions() * HeapRegion::GrainBytes;
   }