linux-kernel - Re: [patch 2/2] PNP: don't check disabled PCI BARs for conflicts in quirk_system_pci

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Message-ID: <20081001061328.GD7348@colo.lackof.org>
Date:	Wed, 1 Oct 2008 00:13:28 -0600
From:	Grant Grundler <grundler@...isc-linux.org>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
Cc:	Ingo Molnar <mingo@...e.hu>,
	Arjan van de Ven <arjan@...radead.org>,
	Rene Herman <rene.herman@...access.nl>,
	Bjorn Helgaas <bjorn.helgaas@...com>,
	Jesse Barnes <jbarnes@...tuousgeek.org>,
	Len Brown <lenb@...nel.org>, Frans Pop <elendil@...net.nl>,
	"Rafael J. Wysocki" <rjw@...k.pl>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	linux-pci@...r.kernel.org, linux-acpi@...r.kernel.org,
	Adam Belay <abelay@....edu>, Avuton Olrich <avuton@...il.com>,
	Karl Bellve <karl.bellve@...ssmed.edu>,
	Willem Riede <wriede@...de.org>,
	Matthew Hall <mhall@...omputing.net>,
	Sam Ravnborg <sam@...nborg.org>
Subject: Re: [patch 2/2] PNP: don't check disabled PCI BARs for conflicts
	in quirk_system_pci_resources()

On Tue, Sep 30, 2008 at 12:51:07PM -0700, Linus Torvalds wrote:
....
> But I think we could add a separate notion of a dependancy point, and have 
> a setup where we describe "initcall X needs to happen before point A" and 
> "initcall Z needs to happen after point A".
> 
> And then we can create a separate set of these dependency points, so that 
> X and Y don't have to know about each other, they just have to have some 
> knowledge about some common synchronization point - one that exists 
> regardless of whether X or Y are even compiled in!

We already do this today. :)
Definitions are in include/linux/init.h.
Point A would be "early" ("run before initialing SMP")
The rest could use better definitions and AFAICT aren't that much better
than being named "Point B".

hth,
grant
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