Re: [announce 7/7] fbsplash - documentation

Benjamin Herrenschmidt
2005-03-11T12:30:17Z

>
> I don't understand. Does the kernel code need to wait for the helper
> to finish while holding the semaphore? AFAICS, the helper is completely
> asynchronous, so it can simply do its job when the kernel has given
> up the semaphore.

It should be totally async witout any sem. there is no guarantee that
userspace is even available at the time you do the call.