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From: Arjan van de Ven <arjanv@redhat.com>
To: Sven Geggus <geg@iitb.fhg.de>, linux-kernel@vger.kernel.org
Subject: Re: Changing CPU Speed while running Linux
Date: Wed, 13 Jun 2001 14:21:37 +0100	[thread overview]
Message-ID: <3B2768E1.2B7E064C@redhat.com> (raw)
In-Reply-To: <20010613143536.A1323@iitb.fhg.de>

Sven Geggus wrote:
> 
> Hi there,
> 
> on my Elan410 based System it is very easy to change the CPU clock speed by
> means od two outb commands.
> 
> I was wondering, if it does some harm to the Kernel if the CPU is
> reprogrammed using a different CPU clock speed, while the system is up and
> running.

I have a module for the K6 PowerNow which allows you to do

echo 450 > /proc/sys/cpu/0/frequency

and does the right thing wrt udelay / bogomips etc..
I can dig it out if you want.. sounds like this should be a more generic
thing.

Greetings,
  Arjan van de Ven

  reply	other threads:[~2001-06-13 13:22 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2001-06-13 12:35 Changing CPU Speed while running Linux Sven Geggus
2001-06-13 13:21 ` Arjan van de Ven [this message]
2001-06-13 13:41   ` Magnus Sandberg
2001-06-13 13:49     ` Dave Jones
2001-06-14 13:12   ` Pavel Machek
2001-06-16 10:46     ` arjan
2001-06-16 13:23     ` Alan Cox
2001-06-16 13:56       ` Ian Stirling
  -- strict thread matches above, loose matches on Subject: below --
2001-06-13 22:23 Dieter Nützel

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