From: Ulrich Drepper <drepper@redhat.com>
To: Linux Kernel <linux-kernel@vger.kernel.org>
Subject: i2c or eeprom enumeration problem
Date: Sun, 27 Apr 2008 21:20:42 -0700 [thread overview]
Message-ID: <4815509A.9040802@redhat.com> (raw)
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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?
- --
➧ Ulrich Drepper ➧ Red Hat, Inc. ➧ 444 Castro St ➧ Mountain View, CA ❖
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next reply other threads:[~2008-04-28 4:21 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-04-28 4:20 Ulrich Drepper [this message]
2008-04-28 12:05 ` i2c or eeprom enumeration problem Andrew Morton
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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