diff options
Diffstat (limited to '')
| -rw-r--r-- | kernel/sched/fair.c | 12 | ||||
| -rw-r--r-- | kernel/sched/features.h | 1 |
2 files changed, 13 insertions, 0 deletions
diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index f496cef90ce7..0b7445cd5af9 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -873,6 +873,13 @@ static struct sched_entity *pick_eevdf(struct cfs_rq *cfs_rq) if (curr && (!curr->on_rq || !entity_eligible(cfs_rq, curr))) curr = NULL; + /* + * Once selected, run a task until it either becomes non-eligible or + * until it gets a new slice. See the HACK in set_next_entity(). + */ + if (sched_feat(RUN_TO_PARITY) && curr && curr->vlag == curr->deadline) + return curr; + while (node) { struct sched_entity *se = __node_2_se(node); @@ -5167,6 +5174,11 @@ set_next_entity(struct cfs_rq *cfs_rq, struct sched_entity *se) update_stats_wait_end_fair(cfs_rq, se); __dequeue_entity(cfs_rq, se); update_load_avg(cfs_rq, se, UPDATE_TG); + /* + * HACK, stash a copy of deadline at the point of pick in vlag, + * which isn't used until dequeue. + */ + se->vlag = se->deadline; } update_stats_curr_start(cfs_rq, se); diff --git a/kernel/sched/features.h b/kernel/sched/features.h index 61bcbf5e46a4..f770168230ae 100644 --- a/kernel/sched/features.h +++ b/kernel/sched/features.h @@ -6,6 +6,7 @@ */ SCHED_FEAT(PLACE_LAG, true) SCHED_FEAT(PLACE_DEADLINE_INITIAL, true) +SCHED_FEAT(RUN_TO_PARITY, true) /* * Prefer to schedule the task we woke last (assuming it failed |