On Tuesday, September 09, 2014 03:46:23 PM James Bottomley wrote:
> On Wed, 2014-09-10 at 07:41 +0900, Tejun Heo wrote:
> > 
> > The thing is that we have to have dynamic mechanism to listen for
> > device attachments no matter what and such mechanism has been in place
> > for a long time at this point.  The synchronous wait simply doesn't
> > serve any purpose anymore and kinda gets in the way in that it makes
> > it a possibly extremely slow process to tell whether loading of a
> > module succeeded or not because the wait for the initial round of
> > probe is piggybacked.
> 
> OK, so we just fire and forget in userland ... why bother inventing an
> elaborate new infrastructure in the kernel to do exactly what
> 
> modprobe <mod> &
> 
> would do?

Just so we do not forget: we also want the no-modules case to also be able
to probe asynchronously so that a slow device does not stall kernel booting.

Thanks.

-- 
Dmitry
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