diff options
Diffstat (limited to 'kernel/sched/rt.c')
| -rw-r--r-- | kernel/sched/rt.c | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/kernel/sched/rt.c b/kernel/sched/rt.c index cfec881491ef..ba4403e910d8 100644 --- a/kernel/sched/rt.c +++ b/kernel/sched/rt.c @@ -265,8 +265,12 @@ static void pull_rt_task(struct rq *this_rq); static inline bool need_pull_rt_task(struct rq *rq, struct task_struct *prev) { - /* Try to pull RT tasks here if we lower this rq's prio */ - return rq->rt.highest_prio.curr > prev->prio; + /* + * Try to pull RT tasks here if we lower this rq's prio and cpu is not + * isolated + */ + return rq->rt.highest_prio.curr > prev->prio && + !cpu_isolated(cpu_of(rq)); } static inline int rt_overloaded(struct rq *rq) @@ -1694,6 +1698,8 @@ static int find_lowest_rq_hmp(struct task_struct *task) for_each_sched_cluster(cluster) { cpumask_and(&candidate_mask, &cluster->cpus, lowest_mask); + cpumask_andnot(&candidate_mask, &candidate_mask, + cpu_isolated_mask); if (cpumask_empty(&candidate_mask)) continue; @@ -2282,7 +2288,8 @@ static void switched_from_rt(struct rq *rq, struct task_struct *p) * we may need to handle the pulling of RT tasks * now. */ - if (!task_on_rq_queued(p) || rq->rt.rt_nr_running) + if (!task_on_rq_queued(p) || rq->rt.rt_nr_running || + cpu_isolated(cpu_of(rq))) return; queue_pull_task(rq); |