diff options
Diffstat (limited to 'kernel/sched_idletask.c')
| -rw-r--r-- | kernel/sched_idletask.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/kernel/sched_idletask.c b/kernel/sched_idletask.c index ca5374860ae..ef7a2661fa1 100644 --- a/kernel/sched_idletask.c +++ b/kernel/sched_idletask.c @@ -69,6 +69,33 @@ static void set_curr_task_idle(struct rq *rq) { } +static void switched_to_idle(struct rq *rq, struct task_struct *p, + int running) +{ + /* Can this actually happen?? */ + if (running) + resched_task(rq->curr); + else + check_preempt_curr(rq, p); +} + +static void prio_changed_idle(struct rq *rq, struct task_struct *p, + int oldprio, int running) +{ + /* This can happen for hot plug CPUS */ + + /* + * Reschedule if we are currently running on this runqueue and + * our priority decreased, or if we are not currently running on + * this runqueue and our priority is higher than the current's + */ + if (running) { + if (p->prio > oldprio) + resched_task(rq->curr); + } else + check_preempt_curr(rq, p); +} + /* * Simple, special scheduling class for the per-CPU idle tasks: */ @@ -94,5 +121,9 @@ const struct sched_class idle_sched_class = { .set_curr_task = set_curr_task_idle, .task_tick = task_tick_idle, + + .prio_changed = prio_changed_idle, + .switched_to = switched_to_idle, + /* no .task_new for idle tasks */ }; |