stop_task.c (4f2c0a4acffbec01079c28f839422e64ddeff004) stop_task.c (b2f7d7507982ed56d301ba0f75f040fd1e930214)
1// SPDX-License-Identifier: GPL-2.0
2/*
3 * stop-task scheduling class.
4 *
5 * The stop task is the highest priority task in the system, it preempts
6 * everything and will be preempted by nothing.
7 *
8 * See kernel/stop_machine.c

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18static int
19balance_stop(struct rq *rq, struct task_struct *prev, struct rq_flags *rf)
20{
21 return sched_stop_runnable(rq);
22}
23#endif /* CONFIG_SMP */
24
25static void
1// SPDX-License-Identifier: GPL-2.0
2/*
3 * stop-task scheduling class.
4 *
5 * The stop task is the highest priority task in the system, it preempts
6 * everything and will be preempted by nothing.
7 *
8 * See kernel/stop_machine.c

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18static int
19balance_stop(struct rq *rq, struct task_struct *prev, struct rq_flags *rf)
20{
21 return sched_stop_runnable(rq);
22}
23#endif /* CONFIG_SMP */
24
25static void
26check_preempt_curr_stop(struct rq *rq, struct task_struct *p, int flags)
26wakeup_preempt_stop(struct rq *rq, struct task_struct *p, int flags)
27{
28 /* we're never preempted */
29}
30
31static void set_next_task_stop(struct rq *rq, struct task_struct *stop, bool first)
32{
33 stop->se.exec_start = rq_clock_task(rq);
34}

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115 * Simple, special scheduling class for the per-CPU stop tasks:
116 */
117DEFINE_SCHED_CLASS(stop) = {
118
119 .enqueue_task = enqueue_task_stop,
120 .dequeue_task = dequeue_task_stop,
121 .yield_task = yield_task_stop,
122
27{
28 /* we're never preempted */
29}
30
31static void set_next_task_stop(struct rq *rq, struct task_struct *stop, bool first)
32{
33 stop->se.exec_start = rq_clock_task(rq);
34}

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115 * Simple, special scheduling class for the per-CPU stop tasks:
116 */
117DEFINE_SCHED_CLASS(stop) = {
118
119 .enqueue_task = enqueue_task_stop,
120 .dequeue_task = dequeue_task_stop,
121 .yield_task = yield_task_stop,
122
123 .check_preempt_curr = check_preempt_curr_stop,
123 .wakeup_preempt = wakeup_preempt_stop,
124
125 .pick_next_task = pick_next_task_stop,
126 .put_prev_task = put_prev_task_stop,
127 .set_next_task = set_next_task_stop,
128
129#ifdef CONFIG_SMP
130 .balance = balance_stop,
131 .pick_task = pick_task_stop,
132 .select_task_rq = select_task_rq_stop,
133 .set_cpus_allowed = set_cpus_allowed_common,
134#endif
135
136 .task_tick = task_tick_stop,
137
138 .prio_changed = prio_changed_stop,
139 .switched_to = switched_to_stop,
140 .update_curr = update_curr_stop,
141};
124
125 .pick_next_task = pick_next_task_stop,
126 .put_prev_task = put_prev_task_stop,
127 .set_next_task = set_next_task_stop,
128
129#ifdef CONFIG_SMP
130 .balance = balance_stop,
131 .pick_task = pick_task_stop,
132 .select_task_rq = select_task_rq_stop,
133 .set_cpus_allowed = set_cpus_allowed_common,
134#endif
135
136 .task_tick = task_tick_stop,
137
138 .prio_changed = prio_changed_stop,
139 .switched_to = switched_to_stop,
140 .update_curr = update_curr_stop,
141};