Commit 6b124879 authored by Eric W. Biederman's avatar Eric W. Biederman
Browse files

exit/kthread: Move the exit code for kernel threads into struct kthread 



The exit code of kernel threads has different semantics than the
exit_code of userspace tasks.  To avoid confusion and allow
the userspace implementation to change as needed move
the kernel thread exit code into struct kthread.

Signed-off-by: default avatar"Eric W. Biederman" <ebiederm@xmission.com>
parent 40966e31

kernel/kthread.c

+5 −2
Original line number Diff line number Diff line
@@ -52,6 +52,7 @@ struct kthread_create_info 
struct kthread {

	unsigned long flags;

	unsigned int cpu;

	int result;

	int (*threadfn)(void *);

	void *data;

	mm_segment_t oldfs;
@@ -287,7 +288,9 @@ EXPORT_SYMBOL_GPL(kthread_parkme); 
 */

void __noreturn kthread_exit(long result)

{

	do_exit(result);

	struct kthread *kthread = to_kthread(current);

	kthread->result = result;

	do_exit(0);

}



/**
@@ -679,7 +682,7 @@ int kthread_stop(struct task_struct *k) 
	kthread_unpark(k);

	wake_up_process(k);

	wait_for_completion(&kthread->exited);

	ret = k->exit_code;

	ret = kthread->result;

	put_task_struct(k);



	trace_sched_kthread_stop_ret(ret);