diff -r 6009860b0b1e -r 800a65bfe347 hotspot/src/share/vm/runtime/globals.hpp
--- a/hotspot/src/share/vm/runtime/globals.hpp	Wed Mar 27 10:55:37 2013 +0100
+++ b/hotspot/src/share/vm/runtime/globals.hpp	Thu Mar 28 10:27:28 2013 +0100
@@ -1402,6 +1402,10 @@
           "How much the GC can expand the eden by while the GC locker  "    \
           "is active (as a percentage)")                                    \
                                                                             \
+  diagnostic(intx, GCLockerRetryAllocationCount, 2,                         \
+          "Number of times to retry allocations when"                       \
+          " blocked by the GC locker")                                      \
+                                                                            \
   develop(bool, UseCMSAdaptiveFreeLists, true,                              \
           "Use Adaptive Free Lists in the CMS generation")                  \
                                                                             \