diff options
Diffstat (limited to 'kernel/sched/idle.c')
| -rw-r--r-- | kernel/sched/idle.c | 36 |
1 files changed, 21 insertions, 15 deletions
diff --git a/kernel/sched/idle.c b/kernel/sched/idle.c index b98283fc6914..c892c6280c9f 100644 --- a/kernel/sched/idle.c +++ b/kernel/sched/idle.c @@ -241,13 +241,14 @@ static void do_idle(void) check_pgt_cache(); rmb(); + local_irq_disable(); + if (cpu_is_offline(cpu)) { - tick_nohz_idle_stop_tick_protected(); + tick_nohz_idle_stop_tick(); cpuhp_report_idle_dead(); arch_cpu_idle_dead(); } - local_irq_disable(); arch_cpu_idle_enter(); /* @@ -375,14 +376,27 @@ static void check_preempt_curr_idle(struct rq *rq, struct task_struct *p, int fl resched_curr(rq); } -static struct task_struct * -pick_next_task_idle(struct rq *rq, struct task_struct *prev, struct rq_flags *rf) +static void put_prev_task_idle(struct rq *rq, struct task_struct *prev, struct rq_flags *rf) +{ +} + +static void set_next_task_idle(struct rq *rq, struct task_struct *next) { - put_prev_task(rq, prev); update_idle_core(rq); schedstat_inc(rq->sched_goidle); +} + +static struct task_struct * +pick_next_task_idle(struct rq *rq, struct task_struct *prev, struct rq_flags *rf) +{ + struct task_struct *next = rq->idle; - return rq->idle; + if (prev) + put_prev_task(rq, prev); + + set_next_task_idle(rq, next); + + return next; } /* @@ -398,10 +412,6 @@ dequeue_task_idle(struct rq *rq, struct task_struct *p, int flags) raw_spin_lock_irq(&rq->lock); } -static void put_prev_task_idle(struct rq *rq, struct task_struct *prev) -{ -} - /* * scheduler tick hitting a task of our scheduling class. * @@ -414,10 +424,6 @@ static void task_tick_idle(struct rq *rq, struct task_struct *curr, int queued) { } -static void set_curr_task_idle(struct rq *rq) -{ -} - static void switched_to_idle(struct rq *rq, struct task_struct *p) { BUG(); @@ -452,13 +458,13 @@ const struct sched_class idle_sched_class = { .pick_next_task = pick_next_task_idle, .put_prev_task = put_prev_task_idle, + .set_next_task = set_next_task_idle, #ifdef CONFIG_SMP .select_task_rq = select_task_rq_idle, .set_cpus_allowed = set_cpus_allowed_common, #endif - .set_curr_task = set_curr_task_idle, .task_tick = task_tick_idle, .get_rr_interval = get_rr_interval_idle, |