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Date: Thu, 22 Mar 2001 22:43:21 -0800 (PST)
From: Dave Zarzycki <dave@zarzycki.org>
To: Alan Cox <alan@lxorguk.ukuu.org.uk>
cc: "Woller, Thomas" <twoller@crystal.cirrus.com>,
        "'linux-kernel@vger.kernel.org'" <linux-kernel@vger.kernel.org>
Subject: Re: Incorrect mdelay() results on Power Managed Machines x86
In-Reply-To: <E14gCbN-0003Kn-00@the-village.bc.nu>
Message-ID: <Pine.LNX.4.30.0103222238001.994-100000@batman.zarzycki.org>
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On Thu, 22 Mar 2001, Alan Cox wrote:

> This is commonly done using the speedstep feature on intel cpus. Speedstep
> can generate events so the OS knows about it but Intel are not telling
> people about how this works.
<...snip...>
> We certainly could recalibrate the clock if we could get events out of
> ACPI, APM or some other source.

Specific events for Speedstep on/off would be nice, but in practice, can
we re-calibrate when ever there is a change in the power status (on
battery, charging, etc.)?

davez

-- 
Dave Zarzycki
http://thor.sbay.org/~dave/

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