linux-kernel - Re: Strange entries in /proc/acpi/thermal

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Message-ID: <20061013181030.GA11662@irc.pl>
Date:	Fri, 13 Oct 2006 20:10:30 +0200
From:	Tomasz Torcz <zdzichu@....pl>
To:	Jeremy Fitzhardinge <jeremy@...p.org>
Cc:	Robert Hancock <hancockr@...w.ca>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	"Brown, Len" <len.brown@...el.com>,
	"Pallipadi, Venkatesh" <venkatesh.pallipadi@...el.com>
Subject: Re: Strange entries in /proc/acpi/thermal_zone for Thinkpad X60

On Thu, Oct 12, 2006 at 09:28:12PM -0700, Jeremy Fitzhardinge wrote:
> Robert Hancock wrote:
> >I would expect they wouldn't, otherwise there would be no reason for 
> >the BIOS people to set up two thermal zones..
> 
> Ah, OK.  I misunderstood what thermal zones are.
> 
> >How do you know they are one for each core? ACPI thermal zones can be 
> >anywhere in the machine that needs OS-controlled cooling. Could be the 
> >CPU heatsink, voltage regulator, or someplace else.
> 
> Right, bad assumption on my part.  Is there any way to find out what 
> they might correspond to?  /proc/acpi/ibm/thermal has a bunch of 
> temperature-like numbers in them; I guess there should be some 
> correlation between those and the thermal zones.

  There are many temperature sensors in Thinkpads. There's even map of
them somewhere on http://www.thinkwiki.org.

-- 
Tomasz Torcz                "Funeral in the morning, IDE hacking
zdzichu@....-nie.spam-.pl    in the afternoon and evening." - Alan Cox


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