lkml.org 
[lkml]   [2007]   [May]   [9]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: Please revert 5adc55da4a7758021bcc374904b0f8b076508a11 (PCI_MULTITHREAD_PROBE)
On Tue, May 08, 2007 at 01:58:10PM -0700, David Miller wrote:
> From: Greg KH <greg@kroah.com>
> Date: Tue, 8 May 2007 07:07:53 -0700
>
> > Only if it ends up working properly. The commit you reference above
> > (which removed the PCI_MULTITHREAD_PROBE option), is fine, pci
> > multi-threaded probing is still broken as it is a model that PCI drivers
> > are not yet ready to handle properly yet.
>
> FWIW I would like to see this working properly at some point.
>
> It seems to me that the issues are two-fold:
>
> 1) A proper dependency system is necessary
>
> 2) Proper mutual exclusion for shared system resources/registers/etc.
> that are poked at in an ad-hoc unlocked manner currently
>
> Is that basically what it boils down to?

Yes, that's about it.

Number 1 seemed to cause the most crashes, I don't think number 2 ever
caused any problems, but it might have, there were too many weird oopses
to be able to rule that out.

But in the end, I don't think that PCI really will benefit from this
speed wise, but I think the kernel overall will benefit if we can
document those dependencies somehow.

thanks,

greg k-h
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2007-05-09 11:49    [W:0.094 / U:0.204 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site