--- a/hotspot/src/cpu/x86/vm/interp_masm_x86_64.cpp	Sun Feb 22 17:21:13 2009 -0800
+++ b/hotspot/src/cpu/x86/vm/interp_masm_x86_64.cpp	Mon Mar 02 14:43:36 2009 -0700
@@ -1593,6 +1593,14 @@
     call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_method_entry),
                  r15_thread, c_rarg1);
   }
+
+  // RedefineClasses() tracing support for obsolete method entry
+  if (RC_TRACE_IN_RANGE(0x00001000, 0x00002000)) {
+    get_method(c_rarg1);
+    call_VM_leaf(
+      CAST_FROM_FN_PTR(address, SharedRuntime::rc_trace_method_entry),
+      r15_thread, c_rarg1);
+  }
 }