* Update the current task's runtime statistics. Skip current tasks that
* are not in our scheduling class.
*/
-static inline void update_curr_rt(struct rq *rq)
+static void update_curr_rt(struct rq *rq)
{
struct task_struct *curr = rq->curr;
u64 delta_exec;
/*
* Adding/removing a task to/from a priority array:
*/
-static void
-dequeue_task_rt(struct rq *rq, struct task_struct *p, int sleep, u64 now)
+static void dequeue_task_rt(struct rq *rq, struct task_struct *p, int sleep)
{
struct rt_prio_array *array = &rq->rt.active;
}
static void
-yield_task_rt(struct rq *rq, struct task_struct *p)
+yield_task_rt(struct rq *rq)
{
- requeue_task_rt(rq, p);
+ requeue_task_rt(rq, rq->curr);
}
/*
resched_task(rq->curr);
}
-static struct task_struct *pick_next_task_rt(struct rq *rq, u64 now)
+static struct task_struct *pick_next_task_rt(struct rq *rq)
{
struct rt_prio_array *array = &rq->rt.active;
struct task_struct *next;
return next;
}
-static void put_prev_task_rt(struct rq *rq, struct task_struct *p, u64 now)
+static void put_prev_task_rt(struct rq *rq, struct task_struct *p)
{
update_curr_rt(rq);
p->se.exec_start = 0;
if (--p->time_slice)
return;
- p->time_slice = static_prio_timeslice(p->static_prio);
- set_tsk_need_resched(p);
+ p->time_slice = DEF_TIMESLICE;
+
+ /*
+ * Requeue to the end of queue if we are not the only element
+ * on the queue:
+ */
+ if (p->run_list.prev != p->run_list.next) {
+ requeue_task_rt(rq, p);
+ set_tsk_need_resched(p);
+ }
+}
+
+static void set_curr_task_rt(struct rq *rq)
+{
+ struct task_struct *p = rq->curr;
- /* put it at the end of the queue: */
- requeue_task_rt(rq, p);
+ p->se.exec_start = rq->clock;
}
-static struct sched_class rt_sched_class __read_mostly = {
+const struct sched_class rt_sched_class = {
+ .next = &fair_sched_class,
.enqueue_task = enqueue_task_rt,
.dequeue_task = dequeue_task_rt,
.yield_task = yield_task_rt,
.load_balance = load_balance_rt,
+ .set_curr_task = set_curr_task_rt,
.task_tick = task_tick_rt,
};