From owner-freebsd-arch@FreeBSD.ORG  Wed Jul 11 11:19:42 2007
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To: Robert Watson <rwatson@FreeBSD.org>
From: "Poul-Henning Kamp" <phk@phk.freebsd.dk>
In-Reply-To: Your message of "Wed, 11 Jul 2007 12:15:13 +0100."
	<20070711115332.I67691@fledge.watson.org> 
Date: Wed, 11 Jul 2007 11:19:40 +0000
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Cc: Rui Paulo <rpaulo@fnop.net>, Shteryana Shopova <syrinx@FreeBSD.org>,
	freebsd-arch@FreeBSD.org, "Constantine A. Murenin" <cnst@FreeBSD.org>
Subject: Re: Porting OpenBSD's sysctl hw.sensors framework to FreeBSD 
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In message <20070711115332.I67691@fledge.watson.org>, Robert Watson writes:
>On Wed, 11 Jul 2007, Poul-Henning Kamp wrote:


>So it sounds like it would be useful for Constantine to help flesh out a few 
>pieces of understanding:

Add to this:

 - Is it possible to correctly identify the hardware platform, so that we know
   where to find the sensors and know what they measure, without bloating the
   kernel with a lot of tables.

The major technical challenge is that sensors are not documented on the majority
of systems, unless you know in advance where to look for them.

IPMI and ACPI tries to do something here, but the former is only available on
serverhardware and the latter more often than not, comes only with the minimum
necessary to avoid melted plastic.

-- 
Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
phk@FreeBSD.ORG         | TCP/IP since RFC 956
FreeBSD committer       | BSD since 4.3-tahoe    
Never attribute to malice what can adequately be explained by incompetence.