diff -r a64d352d1118 -r c124e2e7463e src/share/vm/prims/forte.cpp
--- a/src/share/vm/prims/forte.cpp	Wed Aug 31 09:48:21 2011 -0700
+++ b/src/share/vm/prims/forte.cpp	Wed Aug 31 16:46:11 2011 -0700
@@ -522,25 +522,6 @@
 extern "C" {
 JNIEXPORT
 void AsyncGetCallTrace(ASGCT_CallTrace *trace, jint depth, void* ucontext) {
-
-// This is if'd out because we no longer use thread suspension.
-// However if someone wanted to backport this to a 5.0 jvm then this
-// code would be important.
-#if 0
-  if (SafepointSynchronize::is_synchronizing()) {
-    // The safepoint mechanism is trying to synchronize all the threads.
-    // Since this can involve thread suspension, it is not safe for us
-    // to be here. We can reduce the deadlock risk window by quickly
-    // returning to the SIGPROF handler. However, it is still possible
-    // for VMThread to catch us here or in the SIGPROF handler. If we
-    // are suspended while holding a resource and another thread blocks
-    // on that resource in the SIGPROF handler, then we will have a
-    // three-thread deadlock (VMThread, this thread, the other thread).
-    trace->num_frames = ticks_safepoint; // -10
-    return;
-  }
-#endif
-
   JavaThread* thread;
 
   if (trace->env_id == NULL ||