@@ -, +, @@ 
    fix sched_ule to honor sched_yield()
--- b/sys/kern/sched_ule.c	
+++ b/sys/kern/sched_ule.c	
@@ -1888,7 +1888,8 @@ sched_switch(struct thread *td, struct thread *newtd, int flags)
 	ts->ts_rltick = ticks;
 	td->td_lastcpu = td->td_oncpu;
 	td->td_oncpu = NOCPU;
-	preempted = !(td->td_flags & TDF_SLICEEND);
+	preempted = !((td->td_flags & TDF_SLICEEND) ||
+		(flags & SWT_RELINQUISH));
 	td->td_flags &= ~(TDF_NEEDRESCHED | TDF_SLICEEND);
 	td->td_owepreempt = 0;
 	if (!TD_IS_IDLETHREAD(td))