--- a/src/hotspot/os/solaris/os_solaris.cpp	Fri Aug 10 09:30:26 2018 -0400
+++ b/src/hotspot/os/solaris/os_solaris.cpp	Fri Aug 10 09:36:01 2018 -0400
@@ -78,7 +78,6 @@
 # include <link.h>
 # include <poll.h>
 # include <pthread.h>
-# include <schedctl.h>
 # include <setjmp.h>
 # include <signal.h>
 # include <stdio.h>
@@ -742,7 +741,6 @@
   OSThread* osthr = thread->osthread();
 
   osthr->set_lwp_id(_lwp_self());  // Store lwp in case we are bound
-  thread->_schedctl = (void *) schedctl_init();
 
   log_info(os, thread)("Thread is alive (tid: " UINTX_FORMAT ").",
     os::current_thread_id());
@@ -812,7 +810,6 @@
   // Store info on the Solaris thread into the OSThread
   osthread->set_thread_id(thread_id);
   osthread->set_lwp_id(_lwp_self());
-  thread->_schedctl = (void *) schedctl_init();
 
   if (UseNUMA) {
     int lgrp_id = os::numa_get_group_id();
@@ -3407,13 +3404,6 @@
   return OS_OK;
 }
 
-
-// Hint to the underlying OS that a task switch would not be good.
-// Void return because it's a hint and can fail.
-void os::hint_no_preempt() {
-  schedctl_start(schedctl_init());
-}
-
 ////////////////////////////////////////////////////////////////////////////////
 // suspend/resume support