--- a/src/share/vm/code/nmethod.cpp	Sat Dec 17 20:50:09 2011 +0100
+++ b/src/share/vm/code/nmethod.cpp	Sat Dec 17 21:40:27 2011 +0100
@@ -25,6 +25,7 @@
 #include "precompiled.hpp"
 #include "code/codeCache.hpp"
 #include "code/compiledIC.hpp"
+#include "code/dependencies.hpp"
 #include "code/nmethod.hpp"
 #include "code/scopeDesc.hpp"
 #include "compiler/abstractCompiler.hpp"
@@ -52,6 +53,7 @@
 
 // Only bother with this argument setup if dtrace is available
 
+#ifndef USDT2
 HS_DTRACE_PROBE_DECL8(hotspot, compiled__method__load,
   const char*, int, const char*, int, const char*, int, void*, size_t);
 
@@ -71,6 +73,21 @@
         signature->bytes(), signature->utf8_length());                    \
     }                                                                     \
   }
+#else /* USDT2 */
+#define DTRACE_METHOD_UNLOAD_PROBE(method)                                \
+  {                                                                       \
+    methodOop m = (method);                                               \
+    if (m != NULL) {                                                      \
+      Symbol* klass_name = m->klass_name();                               \
+      Symbol* name = m->name();                                           \
+      Symbol* signature = m->signature();                                 \
+      HOTSPOT_COMPILED_METHOD_UNLOAD(                                     \
+        (char *) klass_name->bytes(), klass_name->utf8_length(),                   \
+        (char *) name->bytes(), name->utf8_length(),                               \
+        (char *) signature->bytes(), signature->utf8_length());                    \
+    }                                                                     \
+  }
+#endif /* USDT2 */
 
 #else //  ndef DTRACE_ENABLED
 
@@ -453,7 +470,6 @@
   _stack_traversal_mark       = 0;
   _unload_reported            = false;           // jvmti state
 
-  NOT_PRODUCT(_has_debug_info = false);
 #ifdef ASSERT
   _oops_are_stale             = false;
 #endif
@@ -1496,6 +1512,7 @@
 void nmethod::post_compiled_method_load_event() {
 
   methodOop moop = method();
+#ifndef USDT2
   HS_DTRACE_PROBE8(hotspot, compiled__method__load,
       moop->klass_name()->bytes(),
       moop->klass_name()->utf8_length(),
@@ -1504,6 +1521,16 @@
       moop->signature()->bytes(),
       moop->signature()->utf8_length(),
       insts_begin(), insts_size());
+#else /* USDT2 */
+  HOTSPOT_COMPILED_METHOD_LOAD(
+      (char *) moop->klass_name()->bytes(),
+      moop->klass_name()->utf8_length(),
+      (char *) moop->name()->bytes(),
+      moop->name()->utf8_length(),
+      (char *) moop->signature()->bytes(),
+      moop->signature()->utf8_length(),
+      insts_begin(), insts_size());
+#endif /* USDT2 */
 
   if (JvmtiExport::should_post_compiled_method_load() ||
       JvmtiExport::should_post_compiled_method_unload()) {