diff options
| -rw-r--r-- | sys/kern/sched_ule.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/sys/kern/sched_ule.c b/sys/kern/sched_ule.c index d83beca..c7b8238 100644 --- a/sys/kern/sched_ule.c +++ b/sys/kern/sched_ule.c @@ -1662,7 +1662,11 @@ sched_pctcpu_update(struct td_sched *ts, int run) { int t = ticks; - if (t - ts->ts_ltick >= SCHED_TICK_TARG) { + /* + * The signed difference may be negative if the thread hasn't run for + * over half of the ticks rollover period. + */ + if ((u_int)(t - ts->ts_ltick) >= SCHED_TICK_TARG) { ts->ts_ticks = 0; ts->ts_ftick = t - SCHED_TICK_TARG; } else if (t - ts->ts_ftick >= SCHED_TICK_MAX) { |
