aboutsummaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
-rw-r--r--kernel/sched/deadline.c19
1 files changed, 1 insertions, 18 deletions
diff --git a/kernel/sched/deadline.c b/kernel/sched/deadline.c
index 55af498d3c8c..b52092f2636d 100644
--- a/kernel/sched/deadline.c
+++ b/kernel/sched/deadline.c
@@ -570,24 +570,7 @@ void init_dl_task_timer(struct sched_dl_entity *dl_se)
570static 570static
571int dl_runtime_exceeded(struct rq *rq, struct sched_dl_entity *dl_se) 571int dl_runtime_exceeded(struct rq *rq, struct sched_dl_entity *dl_se)
572{ 572{
573 int dmiss = dl_time_before(dl_se->deadline, rq_clock(rq)); 573 return (dl_se->runtime <= 0);
574 int rorun = dl_se->runtime <= 0;
575
576 if (!rorun && !dmiss)
577 return 0;
578
579 /*
580 * If we are beyond our current deadline and we are still
581 * executing, then we have already used some of the runtime of
582 * the next instance. Thus, if we do not account that, we are
583 * stealing bandwidth from the system at each deadline miss!
584 */
585 if (dmiss) {
586 dl_se->runtime = rorun ? dl_se->runtime : 0;
587 dl_se->runtime -= rq_clock(rq) - dl_se->deadline;
588 }
589
590 return 1;
591} 574}
592 575
593extern bool sched_rt_bandwidth_account(struct rt_rq *rt_rq); 576extern bool sched_rt_bandwidth_account(struct rt_rq *rt_rq);