Re: [PATCH] Add module_kernel_thread for threads that live in

[Andrew Morton]

Martin Diehl <[e-mail]> wrote:
>
>  > create_thread would use keventd to start the thread, and stop_thread
>  > would tell keventd to set should_die, wmb(), wake it up, and
>  > sys_wait() for it.
>  > 
>  > Thoughts?
>  > Rusty.
> 
>  Why using keventd?

keventd knows how to clean up children, handle SIGCHLD, etc.  That code was
hard-won.

And kernel threads which are parented by userspace processes tend to
accidentally inherit things we'd rather they didn't.  daemonize() and
reparent_to_init() try to fix things up, but I'm still not sure we got it
all.

Using keventd will tend to prevent mistakes.