diff -r 63eb7e38ce84 -r 9d1a788dea3d src/hotspot/share/runtime/vmOperations.hpp
--- a/src/hotspot/share/runtime/vmOperations.hpp	Tue Jan 29 14:34:26 2019 +0100
+++ b/src/hotspot/share/runtime/vmOperations.hpp	Tue Jan 29 14:43:05 2019 +0100
@@ -121,7 +121,6 @@
   template(PrintCompileQueue)                     \
   template(PrintClassHierarchy)                   \
   template(ThreadSuspend)                         \
-  template(CTWThreshold)                          \
   template(ThreadsSuspendJVMTI)                   \
   template(ICBufferFull)                          \
   template(ScavengeMonitors)                      \
@@ -272,12 +271,6 @@
   VMOp_Type type() const { return VMOp_ThreadSuspend; }
 };
 
-// empty vm op, when forcing a safepoint due to ctw threshold is reached for the sweeper
-class VM_CTWThreshold: public VM_ForceSafepoint {
- public:
-  VMOp_Type type() const { return VMOp_CTWThreshold; }
-};
-
 // empty vm op, when forcing a safepoint to suspend threads from jvmti
 class VM_ThreadsSuspendJVMTI: public VM_ForceSafepoint {
  public: