41 struct kthread {  struct
57 	container_of(vfork, struct kthread, exited)  argument
59 static inline struct kthread *to_kthread(struct task_struct *k)  in to_kthread()
64 static struct kthread *to_live_kthread(struct task_struct *k)  in to_live_kthread()
151 	struct kthread *kthread = to_kthread(task);  in probe_kthread_data()  local
154 	probe_kernel_read(&data, &kthread->data, sizeof(data));  in probe_kthread_data()
158 static void __kthread_parkme(struct kthread *self)  in __kthread_parkme()
177 static int kthread(void *_create)  in kthread()  function
184 	struct kthread self;  in kthread()
233 	pid = kernel_thread(kthread, create, CLONE_FS | CLONE_FILES | SIGCHLD);  in create_kthread()
400 static void __kthread_unpark(struct task_struct *k, struct kthread *kthread)  in __kthread_unpark()  argument
402 	clear_bit(KTHREAD_SHOULD_PARK, &kthread->flags);  in __kthread_unpark()
409 	if (test_and_clear_bit(KTHREAD_IS_PARKED, &kthread->flags)) {  in __kthread_unpark()
410 		if (test_bit(KTHREAD_IS_PER_CPU, &kthread->flags))  in __kthread_unpark()
411 			__kthread_bind(k, kthread->cpu, TASK_PARKED);  in __kthread_unpark()
426 	struct kthread *kthread = to_live_kthread(k);  in kthread_unpark()  local
428 	if (kthread)  in kthread_unpark()
429 		__kthread_unpark(k, kthread);  in kthread_unpark()
447 	struct kthread *kthread = to_live_kthread(k);  in kthread_park()  local
450 	if (kthread) {  in kthread_park()
451 		if (!test_bit(KTHREAD_IS_PARKED, &kthread->flags)) {  in kthread_park()
452 			set_bit(KTHREAD_SHOULD_PARK, &kthread->flags);  in kthread_park()
455 				wait_for_completion(&kthread->parked);  in kthread_park()
481 	struct kthread *kthread;  in kthread_stop()  local
487 	kthread = to_live_kthread(k);  in kthread_stop()
488 	if (kthread) {  in kthread_stop()
489 		set_bit(KTHREAD_SHOULD_STOP, &kthread->flags);  in kthread_stop()
490 		__kthread_unpark(k, kthread);  in kthread_stop()
492 		wait_for_completion(&kthread->exited);  in kthread_stop()