libitm: Use ml_wt as default TM methods for >1 thread.

	libitm/
	* retry.cc (GTM::gtm_thread::number_of_threads_changed): Change
	default dispatch for more than 1 thread to ml_wt.

From-SVN: r184547

libitm/ChangeLog

+2012-02-24  Torvald Riegel  <triegel@redhat.com>
+
+	* retry.cc (GTM::gtm_thread::number_of_threads_changed): Change
+	default dispatch for more than 1 thread to ml_wt.
+
 2012-02-20  Torvald Riegel  <triegel@redhat.com>
 
 	* method-gl.cc (gl_wt_dispatch::orec): Put on separate cacheline.

libitm/retry.cc

@@ -314,7 +314,7 @@ GTM::gtm_thread::number_of_threads_changed(unsigned previous, unsigned now)
 	set_default_dispatch(default_dispatch_user);
       else
 	{
-	  abi_dispatch* a = dispatch_serialirr_onwrite();
+	  abi_dispatch* a = dispatch_ml_wt();
 	  if (a->supports(now))
 	    set_default_dispatch(a);
 	  else