52 struct kthread {  struct
71 static inline void set_kthread_struct(void *kthread)  in set_kthread_struct()  argument
78 	current->set_child_tid = (__force void __user *)kthread;  in set_kthread_struct()
81 static inline struct kthread *to_kthread(struct task_struct *k)  in to_kthread()
89 	struct kthread *kthread;  in free_kthread_struct()  local
95 	kthread = to_kthread(k);  in free_kthread_struct()
97 	WARN_ON_ONCE(kthread && kthread->blkcg_css);  in free_kthread_struct()
99 	kfree(kthread);  in free_kthread_struct()
202 	struct kthread *kthread = to_kthread(task);  in kthread_probe_data()  local
205 	copy_from_kernel_nofault(&data, &kthread->data, sizeof(data));  in kthread_probe_data()
209 static void __kthread_parkme(struct kthread *self)  in __kthread_parkme()
244 static int kthread(void *_create)  in kthread()  function
251 	struct kthread *self;  in kthread()
315 	pid = kernel_thread(kthread, create, CLONE_FS | CLONE_FILES | SIGCHLD);  in create_kthread()
511 	struct kthread *kthread = to_kthread(k);  in kthread_unpark()  local
517 	if (test_bit(KTHREAD_IS_PER_CPU, &kthread->flags))  in kthread_unpark()
518 		__kthread_bind(k, kthread->cpu, TASK_PARKED);  in kthread_unpark()
520 	clear_bit(KTHREAD_SHOULD_PARK, &kthread->flags);  in kthread_unpark()
542 	struct kthread *kthread = to_kthread(k);  in kthread_park()  local
547 	if (WARN_ON_ONCE(test_bit(KTHREAD_SHOULD_PARK, &kthread->flags)))  in kthread_park()
550 	set_bit(KTHREAD_SHOULD_PARK, &kthread->flags);  in kthread_park()
557 		wait_for_completion(&kthread->parked);  in kthread_park()
586 	struct kthread *kthread;  in kthread_stop()  local
592 	kthread = to_kthread(k);  in kthread_stop()
593 	set_bit(KTHREAD_SHOULD_STOP, &kthread->flags);  in kthread_stop()
596 	wait_for_completion(&kthread->exited);  in kthread_stop()
1303 	struct kthread *kthread;  in kthread_associate_blkcg()  local
1307 	kthread = to_kthread(current);  in kthread_associate_blkcg()
1308 	if (!kthread)  in kthread_associate_blkcg()
1311 	if (kthread->blkcg_css) {  in kthread_associate_blkcg()
1312 		css_put(kthread->blkcg_css);  in kthread_associate_blkcg()
1313 		kthread->blkcg_css = NULL;  in kthread_associate_blkcg()
1317 		kthread->blkcg_css = css;  in kthread_associate_blkcg()
1329 	struct kthread *kthread;  in kthread_blkcg()  local
1332 		kthread = to_kthread(current);  in kthread_blkcg()
1333 		if (kthread)  in kthread_blkcg()
1334 			return kthread->blkcg_css;  in kthread_blkcg()