diff options
Diffstat (limited to 'kernel/sched')
| -rw-r--r-- | kernel/sched/core.c | 3 | ||||
| -rw-r--r-- | kernel/sched/fair.c | 12 | ||||
| -rw-r--r-- | kernel/sched/topology.c | 2 |
3 files changed, 13 insertions, 4 deletions
diff --git a/kernel/sched/core.c b/kernel/sched/core.c index 97a27726ea21..c5599174e745 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -3731,7 +3731,8 @@ void rt_mutex_setprio(struct task_struct *p, struct task_struct *pi_task) */ if (dl_prio(prio)) { if (!dl_prio(p->normal_prio) || - (pi_task && dl_entity_preempt(&pi_task->dl, &p->dl))) { + (pi_task && dl_prio(pi_task->prio) && + dl_entity_preempt(&pi_task->dl, &p->dl))) { p->dl.dl_boosted = 1; queue_flag |= ENQUEUE_REPLENISH; } else diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index 0b4e997fea1a..81096dd0ca0c 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -2643,7 +2643,7 @@ void task_tick_numa(struct rq *rq, struct task_struct *curr) /* * We don't care about NUMA placement if we don't have memory. */ - if (!curr->mm || (curr->flags & PF_EXITING) || work->next != work) + if ((curr->flags & (PF_EXITING | PF_KTHREAD)) || work->next != work) return; /* @@ -6871,7 +6871,15 @@ static int detach_tasks(struct lb_env *env) if (!can_migrate_task(p, env)) goto next; - load = task_h_load(p); + /* + * Depending of the number of CPUs and tasks and the + * cgroup hierarchy, task_h_load() can return a null + * value. Make sure that env->imbalance decreases + * otherwise detach_tasks() will stop only after + * detaching up to loop_max tasks. + */ + load = max_t(unsigned long, task_h_load(p), 1); + if (sched_feat(LB_MIN) && load < 16 && !env->sd->nr_balance_failed) goto next; diff --git a/kernel/sched/topology.c b/kernel/sched/topology.c index 867d173dab48..152ffe0c2433 100644 --- a/kernel/sched/topology.c +++ b/kernel/sched/topology.c @@ -1117,7 +1117,7 @@ sd_init(struct sched_domain_topology_level *tl, sd_flags = (*tl->sd_flags)(); if (WARN_ONCE(sd_flags & ~TOPOLOGY_SD_FLAGS, "wrong sd_flags in topology description\n")) - sd_flags &= ~TOPOLOGY_SD_FLAGS; + sd_flags &= TOPOLOGY_SD_FLAGS; *sd = (struct sched_domain){ .min_interval = sd_weight, |