From: Andrew Morton <akpm@linux-foundation.org>
To: Ulrich Drepper <drepper@redhat.com>
Cc: Linux Kernel <linux-kernel@vger.kernel.org>, i2c@lm-sensors.org
Subject: Re: i2c or eeprom enumeration problem
Date: Mon, 28 Apr 2008 05:05:15 -0700 [thread overview]
Message-ID: <20080428050515.fcc05689.akpm@linux-foundation.org> (raw)
In-Reply-To: <4815509A.9040802@redhat.com>
On Sun, 27 Apr 2008 21:20:42 -0700 Ulrich Drepper <drepper@redhat.com> wrote:
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
>
> On a NUMA system the eeprom interface in /sys
>
> /sys/bus/i2c/drivers/eeprom/*
>
> do not list all the DRAM eeproms. Only the DRAM from one node is
> listed. I have a 4 socket system with all 16 banks filled and see only
> 4 entries.
>
> My suspicion (without looking at any code) is that the list of i2c
> devices with eeproms is collected once and this happens only on one CPU.
> I sees not to be dynamic since when I read the files with taskset
> restricting execution on certain sockets and cores the result doesn't
> change.
>
> Is this known or expected (I hope not the latter)? Where should I look
> at? I assume that's in the i2c code?
>
Let's cc the i2c list.
next prev parent reply other threads:[~2008-04-28 12:05 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-04-28 4:20 i2c or eeprom enumeration problem Ulrich Drepper
2008-04-28 12:05 ` Andrew Morton [this message]
2008-04-28 12:15 ` [i2c] " Jean Delvare
2008-04-28 14:16 ` Ulrich Drepper
2008-04-28 14:21 ` Jean Delvare
2008-04-28 15:27 ` Ulrich Drepper
2008-04-28 16:53 ` Jean Delvare
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