hulk inclusion category: feature bugzilla: https://gitee.com/openeuler/kernel/issues/I8LL9S
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Not allow task to migrate out of cpu preferred.
Signed-off-by: Hui Tang tanghui20@huawei.com --- kernel/sched/fair.c | 9 +++++++++ 1 file changed, 9 insertions(+)
diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index 4d8e1b75258c..686da2f99f95 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -9210,7 +9210,12 @@ int can_migrate_task(struct task_struct *p, struct lb_env *env) if (kthread_is_per_cpu(p)) return 0;
+#ifdef CONFIG_QOS_SCHED_DYNAMIC_AFFINITY + set_task_select_cpus(p, NULL, 0); + if (!cpumask_test_cpu(env->dst_cpu, p->select_cpus)) { +#else if (!cpumask_test_cpu(env->dst_cpu, p->cpus_ptr)) { +#endif int cpu;
schedstat_inc(p->stats.nr_failed_migrations_affine); @@ -9233,7 +9238,11 @@ int can_migrate_task(struct task_struct *p, struct lb_env *env)
/* Prevent to re-select dst_cpu via env's CPUs: */ for_each_cpu_and(cpu, env->dst_grpmask, env->cpus) { +#ifdef CONFIG_QOS_SCHED_DYNAMIC_AFFINITY + if (cpumask_test_cpu(cpu, p->select_cpus)) { +#else if (cpumask_test_cpu(cpu, p->cpus_ptr)) { +#endif env->flags |= LBF_DST_PINNED; env->new_dst_cpu = cpu; break;