--- a/hotspot/src/share/vm/gc_implementation/g1/g1_globals.hpp	Fri Jun 15 14:17:28 2012 -0700
+++ b/hotspot/src/share/vm/gc_implementation/g1/g1_globals.hpp	Mon Jun 25 16:00:55 2012 -0700
@@ -53,6 +53,9 @@
   develop(bool, G1TraceMarkStackOverflow, false,                            \
           "If true, extra debugging code for CM restart for ovflw.")        \
                                                                             \
+  develop(bool, G1TraceHeapRegionRememberedSet, false,                      \
+          "Enables heap region remembered set debug logs")                  \
+                                                                            \
   diagnostic(bool, G1SummarizeConcMark, false,                              \
           "Summarize concurrent mark info")                                 \
                                                                             \