CFS调度器的实现代码

/*

 * All the scheduling class methods:

 */

static const struct sched_class fair_sched_class = {

    .next            = &idle_sched_class,

    .enqueue_task        = enqueue_task_fair,

    .dequeue_task        = dequeue_task_fair,

    .yield_task        = yield_task_fair,

    .check_preempt_curr    = check_preempt_wakeup,

    .pick_next_task        = pick_next_task_fair,

    .put_prev_task        = put_prev_task_fair,

#ifdef CONFIG_SMP

    .select_task_rq        = select_task_rq_fair,

    .rq_online        = rq_online_fair,

    .rq_offline        = rq_offline_fair,

    .task_waking        = task_waking_fair,

#endif

    .set_curr_task = set_curr_task_fair,

    .task_tick        = task_tick_fair,

    .task_fork        = task_fork_fair,

    .prio_changed        = prio_changed_fair,

    .switched_to        = switched_to_fair,

    .get_rr_interval    = get_rr_interval_fair,

#ifdef CONFIG_FAIR_GROUP_SCHED

    .moved_group        = moved_group_fair,

#endif

}