Subversion Repositories or1k_soc_on_altera_embedded_dev_kit

/*

 * idle-task scheduling class.

 *

 * (NOTE: these are not related to SCHED_IDLE tasks which are

 *  handled in sched_fair.c)

 */

/*

 * Idle tasks are unconditionally rescheduled:

 */

static void check_preempt_curr_idle(struct rq *rq, struct task_struct *p)

{

        resched_task(rq->idle);

}

static struct task_struct *pick_next_task_idle(struct rq *rq)

{

        schedstat_inc(rq, sched_goidle);

        return rq->idle;

}

/*

 * It is not legal to sleep in the idle task - print a warning

 * message if some code attempts to do it:

 */

static void

dequeue_task_idle(struct rq *rq, struct task_struct *p, int sleep)

{

        spin_unlock_irq(&rq->lock);

        printk(KERN_ERR "bad: scheduling from the idle thread!\n");

        dump_stack();

        spin_lock_irq(&rq->lock);

}

static void put_prev_task_idle(struct rq *rq, struct task_struct *prev)

{

}

#ifdef CONFIG_SMP

static unsigned long

load_balance_idle(struct rq *this_rq, int this_cpu, struct rq *busiest,

                  unsigned long max_load_move,

                  struct sched_domain *sd, enum cpu_idle_type idle,

                  int *all_pinned, int *this_best_prio)

{

        return 0;

}

static int

move_one_task_idle(struct rq *this_rq, int this_cpu, struct rq *busiest,

                   struct sched_domain *sd, enum cpu_idle_type idle)

{

        return 0;

}

#endif

static void task_tick_idle(struct rq *rq, struct task_struct *curr)

{

}

static void set_curr_task_idle(struct rq *rq)

{

}

/*

 * Simple, special scheduling class for the per-CPU idle tasks:

 */

const struct sched_class idle_sched_class = {

        /* .next is NULL */

        /* no enqueue/yield_task for idle tasks */

        /* dequeue is not valid, we print a debug message there: */

        .dequeue_task           = dequeue_task_idle,

        .check_preempt_curr     = check_preempt_curr_idle,

        .pick_next_task         = pick_next_task_idle,

        .put_prev_task          = put_prev_task_idle,

#ifdef CONFIG_SMP

        .load_balance           = load_balance_idle,

        .move_one_task          = move_one_task_idle,

#endif

        .set_curr_task          = set_curr_task_idle,

        .task_tick              = task_tick_idle,

        /* no .task_new for idle tasks */

};