linux-kernel - Re: [PATCH] dmi: export dmi data through debugfs

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Message-ID: <87pqvvuoce.fsf@basil.nowhere.org>
Date:	Thu, 30 Sep 2010 19:34:57 +0200
From:	Andi Kleen <andi@...stfloor.org>
To:	Alan Cox <alan@...rguk.ukuu.org.uk>
Cc:	Jean Delvare <khali@...ux-fr.org>, Olof Johansson <olof@...om.net>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, Tejun Heo <tj@...nel.org>
Subject: Re: [PATCH] dmi: export dmi data through debugfs

Alan Cox <alan@...rguk.ukuu.org.uk> writes:

>> Now if you really insist on exposing the whole DMI table through sysfs,
>> I can't prevent you from doing that. After all, ACPI already exposes
>> its tables under /sys/firmware/acpi/tables (mode 0400). But then you'd
>> rather expose the DMI entry point and tables
>> under /sys/firmware/dmi/tables for consistency, rather than using
>> debugfs. But again, I don't think it is adding any value over what we
>> already have.
>
> If you really the DMI data generally available run dmidecode in the boot
> scripts directed to a file. It even has a dump mode for this.

FWIW i have been pondering to put DMI into sysfs too. One of the reasons
mcelog has to start up as root is that it needs to get these tables
out of /dev/mem.

Just having a binary file to read would be fine though, no need to 
do decoding.

-andi

-- 
ak@...ux.intel.com -- Speaking for myself only.
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