Subject: Re: pci_domain_nr vs. /sys/devices
From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Matthew Wilcox <willy@debian.org>
Cc: linux-kernel mailing list <linux-kernel@vger.kernel.org>,
       Patrick Mochel <mochel@osdl.org>
In-Reply-To: <20030611144801.GZ28581@parcelfarce.linux.theplanet.co.uk>
References: <1055341842.754.3.camel@gaston>
	 <20030611144801.GZ28581@parcelfarce.linux.theplanet.co.uk>
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Date: 11 Jun 2003 17:06:20 +0200
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On Wed, 2003-06-11 at 16:48, Matthew Wilcox wrote:

> I don't think sysfs works like that (please correct me if I've
> misunderstood, mochel..)

Looks like nobody really understands it then ;)

> Look in /sys/bus/pci/devices/  There you have all the PCI devices
> lumped together in one place, and we obviously need the domain number
> in the name.  I don't know where the 0 on the end of /sys/devices/pci0/
> comes from, but if we could, I wouldn't say no to:

Nah, you are mixing up /sys/bus/* which is a flat list of busses in the
machine, with /sys/devices/* which is the hierarchical device tree.

> I don't think the extra level of hierarchy in your suggestion is necessary
> or particularly desirable.

It's probably not, then it's a matter of properly renaming the pciN entries
in /sys/devices to be /sys/devices/pciDD:NN where DD is the domain number
and NN is the first bus on this domain, or just pciDD (though I like having
the bus number there as well)

Ben.


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