11909 THREAD_KPRI_RELEASE does nothing of the sort
Reviewed by: Bryan Cantrill <bryan@joyent.com>
Reviewed by: Jerry Jelinek <jerry.jelinek@joyent.com>

@@ -24,10 +24,11 @@
  * Use is subject to license terms.
  */
 
 /*
  * Copyright (c) 2012 by Delphix. All rights reserved.
+ * Copyright 2019 Joyent, Inc.
  */
 
 #include <sys/thread.h>
 #include <sys/proc.h>
 #include <sys/debug.h>

@@ -550,11 +551,10 @@
 
         cancel_pending = schedctl_cancel_pending();
         lwp->lwp_asleep = 1;
         lwp->lwp_sysabort = 0;
         thread_lock(t);
-        t->t_kpri_req = 0;      /* don't need kernel priority */
         cv_block_sig(t, (condvar_impl_t *)cvp);
         /* I can be swapped now */
         curthread->t_schedflag &= ~TS_DONT_SWAP;
         thread_unlock_nopreempt(t);
         mutex_exit(mp);

@@ -761,12 +761,12 @@
  * Generally, cv_timedwait_sig_hrtime() should be used instead of this
  * routine.  It waits based on hrtime rather than wall-clock time and therefore
  * does not need to deal with the time changing.
  */
 int
-cv_waituntil_sig(kcondvar_t *cvp, kmutex_t *mp,
-        timestruc_t *when, int timecheck)
+cv_waituntil_sig(kcondvar_t *cvp, kmutex_t *mp, timestruc_t *when,
+    int timecheck)
 {
         timestruc_t now;
         timestruc_t delta;
         hrtime_t interval;
         int rval;