--- a/src/hotspot/share/runtime/arguments.cpp	Fri Jan 12 11:06:24 2018 -0800
+++ b/src/hotspot/share/runtime/arguments.cpp	Fri Jan 05 22:02:20 2018 +0100
@@ -200,7 +200,9 @@
   _writeable = writeable;
 }
 
-AgentLibrary::AgentLibrary(const char* name, const char* options, bool is_absolute_path, void* os_lib) {
+AgentLibrary::AgentLibrary(const char* name, const char* options,
+               bool is_absolute_path, void* os_lib,
+               bool instrument_lib) {
   _name = AllocateHeap(strlen(name)+1, mtArguments);
   strcpy(_name, name);
   if (options == NULL) {
@@ -214,6 +216,7 @@
   _next = NULL;
   _state = agent_invalid;
   _is_static_lib = false;
+  _is_instrument_lib = instrument_lib;
 }
 
 // Check if head of 'option' matches 'name', and sets 'tail' to the remaining
@@ -290,6 +293,10 @@
   _agentList.add(new AgentLibrary(name, options, absolute_path, NULL));
 }
 
+void Arguments::add_instrument_agent(const char* name, char* options, bool absolute_path) {
+  _agentList.add(new AgentLibrary(name, options, absolute_path, NULL, true));
+}
+
 // Late-binding agents not started via arguments
 void Arguments::add_loaded_agent(AgentLibrary *agentLib) {
   _agentList.add(agentLib);
@@ -2797,7 +2804,7 @@
         size_t length = strlen(tail) + 1;
         char *options = NEW_C_HEAP_ARRAY(char, length, mtArguments);
         jio_snprintf(options, length, "%s", tail);
-        add_init_agent("instrument", options, false);
+        add_instrument_agent("instrument", options, false);
         // java agents need module java.instrument
         if (!create_numbered_property("jdk.module.addmods", "java.instrument", addmods_count++)) {
           return JNI_ENOMEM;