Suppressed reports about data races during thread creation.

git-svn-id: svn://svn.valgrind.org/valgrind/trunk@7843 a5019735-40e9-0310-863c-91ae7b9d1cf9
diff --git a/exp-drd/drd_clientreq.c b/exp-drd/drd_clientreq.c
index e8c19d1..481ad17 100644
--- a/exp-drd/drd_clientreq.c
+++ b/exp-drd/drd_clientreq.c
@@ -140,6 +140,14 @@
     drd_stop_tracing_address_range(arg[1], arg[1] + arg[2]);
     break;
 
+  case VG_USERREQ__DRD_STOP_RECORDING:
+    thread_stop_recording(drd_tid);
+    break;
+
+  case VG_USERREQ__DRD_START_RECORDING:
+    thread_start_recording(drd_tid);
+    break;
+
   case VG_USERREQ__SET_PTHREADID:
     thread_set_pthreadid(drd_tid, arg[1]);
     break;