svn commit: r259834 - stable/10/sys/kern

[John Baldwin]

Author: jhb
Date: Tue Dec 24 19:01:08 2013
New Revision: 259834
URL: http://svnweb.freebsd.org/changeset/base/259834

Log:
  MFC 258869:
  Fix an off-by-one error in r228960.  The maximum priority delta provided
  by SCHED_PRI_TICKS should be SCHED_PRI_RANGE - 1 so that the resulting
  priority value (before nice adjustment) is between SCHED_PRI_MIN and
  SCHED_PRI_MAX, inclusive.

Modified:
  stable/10/sys/kern/sched_ule.c
Directory Properties:
  stable/10/   (props changed)

Modified: stable/10/sys/kern/sched_ule.c
==============================================================================
--- stable/10/sys/kern/sched_ule.c	Tue Dec 24 18:52:36 2013	(r259833)
+++ stable/10/sys/kern/sched_ule.c	Tue Dec 24 19:01:08 2013	(r259834)
@@ -1533,7 +1533,7 @@ sched_priority(struct thread *td)
 		pri = SCHED_PRI_MIN;
 		if (td->td_sched->ts_ticks)
 			pri += min(SCHED_PRI_TICKS(td->td_sched),
-			    SCHED_PRI_RANGE);
+			    SCHED_PRI_RANGE - 1);
 		pri += SCHED_PRI_NICE(td->td_proc->p_nice);
 		KASSERT(pri >= PRI_MIN_BATCH && pri <= PRI_MAX_BATCH,
 		    ("sched_priority: invalid priority %d: nice %d, "