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Date: Thu, 23 Aug 2007 08:23:21 -0700
From: Nate Lawson <nate@root.org>
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Cc: cvs-src@FreeBSD.org, src-committers@FreeBSD.org, cvs-all@FreeBSD.org
Subject: Re: cvs commit: src/sys/dev/coretemp coretemp.c
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Dag-Erling Smørgrav wrote:
> Dag-Erling Smorgrav <des@FreeBSD.org> writes:
>>   Log:
>>   Style nits + more reliable Tj(max) detection + improved reporting of
>>   critical temperature + sched_unbind() after rdmsr + initialize sc_dev.
> 
> I should note that the driver currently only checks for (and reports) a
> critical temperature when you read the sysctl; if you want to use devd
> to react to a critical temperature, you need to set up a cron job to
> poll dev.cpu.N.temperature.  Hopefully, a future version of the driver
> will install an interrupt handler and activate the temperature threshold
> interrupts.
> 
> DES

You could also create a polling thread that runs every 10 seconds.  We
have that for acpi_thermal currently.

-Nate