linux-kernel - Re: Analyzed/Solved/Bisected: Booting 2.6.30-rc2-git7 very slow

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Message-ID: <20090620182617.GM19977@parisc-linux.org>
Date:	Sat, 20 Jun 2009 12:26:17 -0600
From:	Matthew Wilcox <matthew@....cx>
To:	Kay Sievers <kay.sievers@...y.org>
Cc:	jim owens <jowens@...com>, Martin Knoblauch <knobi@...bisoft.de>,
	Jesse Barnes <jbarnes@...tuousgeek.org>,
	Andrew Morton <akpm@...ux-foundation.org>, efault@....de,
	viro@...iv.linux.org.uk, rjw@...k.pl, linux-kernel@...r.kernel.org,
	shemminger@...tta.com, mike.miller@...com,
	linux-pci@...r.kernel.org
Subject: Re: Analyzed/Solved/Bisected: Booting 2.6.30-rc2-git7 very slow

On Sat, Jun 20, 2009 at 08:19:43PM +0200, Kay Sievers wrote:
> On Sat, Jun 20, 2009 at 18:58, Matthew Wilcox<matthew@....cx> wrote:
> 
> > but I don't know what udev is doing. ??The udev source doesn't seem to
> > read PCI vpd itself:
> >
> > udev-0.141$ find -type f |xargs grep -il vpd
> > ./extras/volume_id/lib/adaptec_raid.c
> > ./extras/scsi_id/scsi_id.8
> > ./extras/scsi_id/scsi.h
> > ./extras/scsi_id/scsi_id.config
> > ./extras/scsi_id/scsi_serial.c
> >
> > so there must be some script that it's invoking which is doing that.
> > Anyone familiar with udev?
> 
> scsi_id is usually also called for cciss devices:
>   KERNEL=="cciss*", ..., IMPORT{program}="scsi_id ...

yes, but it's getting SCSI VPD (by asking for mode pages from the SCSI
device).  This problem is with PCI VPD which is totally different.

-- 
Matthew Wilcox				Intel Open Source Technology Centre
"Bill, look, we understand that you're interested in selling us this
operating system, but compare it to ours.  We can't possibly take such
a retrograde step."
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