73 static inline struct kthread *to_kthread(struct task_struct *k)  in to_kthread()  argument
75 	WARN_ON(!(k->flags & PF_KTHREAD));  in to_kthread()
76 	return k->worker_private;  in to_kthread()
129 void free_kthread_struct(struct task_struct *k)  in free_kthread_struct()  argument
136 	kthread = to_kthread(k);  in free_kthread_struct()
143 	k->worker_private = NULL;  in free_kthread_struct()
161 bool __kthread_should_park(struct task_struct *k)  in __kthread_should_park()  argument
163 	return test_bit(KTHREAD_SHOULD_PARK, &to_kthread(k)->flags);  in __kthread_should_park()
598 void kthread_set_per_cpu(struct task_struct *k, int cpu)  in kthread_set_per_cpu()  argument
600 	struct kthread *kthread = to_kthread(k);  in kthread_set_per_cpu()
604 	WARN_ON_ONCE(!(k->flags & PF_NO_SETAFFINITY));  in kthread_set_per_cpu()
633 void kthread_unpark(struct task_struct *k)  in kthread_unpark()  argument
635 	struct kthread *kthread = to_kthread(k);  in kthread_unpark()
642 		__kthread_bind(k, kthread->cpu, TASK_PARKED);  in kthread_unpark()
648 	wake_up_state(k, TASK_PARKED);  in kthread_unpark()
664 int kthread_park(struct task_struct *k)  in kthread_park()  argument
666 	struct kthread *kthread = to_kthread(k);  in kthread_park()
668 	if (WARN_ON(k->flags & PF_EXITING))  in kthread_park()
675 	if (k != current) {  in kthread_park()
676 		wake_up_process(k);  in kthread_park()
686 		WARN_ON_ONCE(!wait_task_inactive(k, TASK_PARKED));  in kthread_park()
708 int kthread_stop(struct task_struct *k)  in kthread_stop()  argument
713 	trace_sched_kthread_stop(k);  in kthread_stop()
715 	get_task_struct(k);  in kthread_stop()
716 	kthread = to_kthread(k);  in kthread_stop()
718 	kthread_unpark(k);  in kthread_stop()
719 	set_tsk_thread_flag(k, TIF_NOTIFY_SIGNAL);  in kthread_stop()
720 	wake_up_process(k);  in kthread_stop()
723 	put_task_struct(k);  in kthread_stop()