linux-kernel - Re: [PATCH] Add support for reading SMBIOS Slot number for PCI devices

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Message-ID: <20150721165759.GD21967@google.com>
Date:	Tue, 21 Jul 2015 11:57:59 -0500
From:	Bjorn Helgaas <bhelgaas@...gle.com>
To:	Jordan Hargrave <jharg93@...il.com>
Cc:	Jean Delvare <jdelvare@...e.de>, linux-kernel@...r.kernel.org,
	linux-pci@...r.kernel.org,
	Jordan Hargrave <Jordan_Hargrave@...l.com>
Subject: Re: [PATCH] Add support for reading SMBIOS Slot number for PCI
 devices

On Mon, Jul 13, 2015 at 09:57:32AM -0500, Jordan Hargrave wrote:
> On Mon, Jul 13, 2015 at 2:35 AM, Jean Delvare <jdelvare@...e.de> wrote:
> 
> > Hi Jordan,
> >
> > On Fri, 10 Jul 2015 17:02:46 -0500, Jordan Hargrave wrote:
> > > From: Jordan Hargrave <Jordan_Hargrave@...l.com>
> > >
> > > There currently isn't an easy way to determine which PCI devices belong
> > to
> > > system slots.  This patch adds support to read SMBIOS Type 9 (System
> > Slots).
> >
> > I'm wondering, can't you use dmidecode or libsmbios to retrieve the
> > same information?
> >
> > --
> > Jean Delvare
> > SUSE L3 Support
> >
> 
> You can but it's as not easy to determine the slot number for leaf devices
> on bridges.  Eventually planning on using this for pulling slot number for
> identifying network cards and disk numbering for systemd

Can you outline the problems with using dmidecode or libsmbios?
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