diff options
| author | Shang XiaoJing <shangxiaojing@huawei.com> | 2022-08-26 12:00:37 +0200 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2022-09-01 11:19:54 +0200 |
| commit | 96458e7f7dc5ad14bd7577cbf1638e1504ad79dd (patch) | |
| tree | 6ff8263bac2af987f82ffa956ab7a2368e64654a /kernel | |
| parent | sched/deadline: Add dl_task_is_earliest_deadline helper (diff) | |
| download | linux-96458e7f7dc5ad14bd7577cbf1638e1504ad79dd.tar.xz linux-96458e7f7dc5ad14bd7577cbf1638e1504ad79dd.zip | |
sched/deadline: Add replenish_dl_new_period helper
Wrap repeated code in helper function replenish_dl_new_period, which set
the deadline and runtime of input dl_se based on pi_of(dl_se). Note that
setup_new_dl_entity originally set the deadline and runtime base on
dl_se, which should equals to pi_of(dl_se) for non-boosted task.
Signed-off-by: Shang XiaoJing <shangxiaojing@huawei.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Daniel Bristot de Oliveira <bristot@kernel.org>
Link: https://lore.kernel.org/r/20220826100037.12146-1-shangxiaojing@huawei.com
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/sched/deadline.c | 23 |
1 files changed, 13 insertions, 10 deletions
diff --git a/kernel/sched/deadline.c b/kernel/sched/deadline.c index 34271aff4712..3bf4b12ec5b7 100644 --- a/kernel/sched/deadline.c +++ b/kernel/sched/deadline.c @@ -770,6 +770,14 @@ static void enqueue_task_dl(struct rq *rq, struct task_struct *p, int flags); static void __dequeue_task_dl(struct rq *rq, struct task_struct *p, int flags); static void check_preempt_curr_dl(struct rq *rq, struct task_struct *p, int flags); +static inline void replenish_dl_new_period(struct sched_dl_entity *dl_se, + struct rq *rq) +{ + /* for non-boosted task, pi_of(dl_se) == dl_se */ + dl_se->deadline = rq_clock(rq) + pi_of(dl_se)->dl_deadline; + dl_se->runtime = pi_of(dl_se)->dl_runtime; +} + /* * We are being explicitly informed that a new instance is starting, * and this means that: @@ -803,8 +811,7 @@ static inline void setup_new_dl_entity(struct sched_dl_entity *dl_se) * future; in fact, we must consider execution overheads (time * spent on hardirq context, etc.). */ - dl_se->deadline = rq_clock(rq) + dl_se->dl_deadline; - dl_se->runtime = dl_se->dl_runtime; + replenish_dl_new_period(dl_se, rq); } /* @@ -836,10 +843,8 @@ static void replenish_dl_entity(struct sched_dl_entity *dl_se) * This could be the case for a !-dl task that is boosted. * Just go with full inherited parameters. */ - if (dl_se->dl_deadline == 0) { - dl_se->deadline = rq_clock(rq) + pi_of(dl_se)->dl_deadline; - dl_se->runtime = pi_of(dl_se)->dl_runtime; - } + if (dl_se->dl_deadline == 0) + replenish_dl_new_period(dl_se, rq); if (dl_se->dl_yielded && dl_se->runtime > 0) dl_se->runtime = 0; @@ -866,8 +871,7 @@ static void replenish_dl_entity(struct sched_dl_entity *dl_se) */ if (dl_time_before(dl_se->deadline, rq_clock(rq))) { printk_deferred_once("sched: DL replenish lagged too much\n"); - dl_se->deadline = rq_clock(rq) + pi_of(dl_se)->dl_deadline; - dl_se->runtime = pi_of(dl_se)->dl_runtime; + replenish_dl_new_period(dl_se, rq); } if (dl_se->dl_yielded) @@ -1024,8 +1028,7 @@ static void update_dl_entity(struct sched_dl_entity *dl_se) return; } - dl_se->deadline = rq_clock(rq) + pi_of(dl_se)->dl_deadline; - dl_se->runtime = pi_of(dl_se)->dl_runtime; + replenish_dl_new_period(dl_se, rq); } } |