Author: jhb
Date: Tue Dec 3 14:50:12 2013
New Revision: 258869
URL: http://svnweb.freebsd.org/changeset/base/258869
Log:
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.
Submitted by: kib
Reported by: pho
MFC after: 1 week
Modified:
head/sys/kern/sched_ule.c
Modified: head/sys/kern/sched_ule.c
==============================================================================
--- head/sys/kern/sched_ule.c Tue Dec 3 13:38:13 2013 (r258868)
+++ head/sys/kern/sched_ule.c Tue Dec 3 14:50:12 2013 (r258869)
@@ -1532,7 +1532,7 @@ 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, "
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