Message-Id: <200401110412.i0B4CWe8024839@turing-police.cc.vt.edu>
To: Robert Love <rml@ximian.com>
Cc: jlnance@unity.ncsu.edu, linux-kernel@vger.kernel.org
Subject: Re: Laptops & CPU frequency 
In-Reply-To: Your message of "Sat, 10 Jan 2004 22:17:41 EST."
             <1073791061.1663.77.camel@localhost> 
From: Valdis.Kletnieks@vt.edu
References: <20040111025623.GA19890@ncsu.edu>
            <1073791061.1663.77.camel@localhost>
Mime-Version: 1.0
Content-Type: multipart/signed; boundary="==_Exmh_993915776P";
	 micalg=pgp-sha1; protocol="application/pgp-signature"
Content-Transfer-Encoding: 7bit
Date: Sat, 10 Jan 2004 23:12:32 -0500
Sender: linux-kernel-owner@vger.kernel.org
Content-Length: 1528
Lines: 41

--==_Exmh_993915776P
Content-Type: text/plain; charset=us-ascii

On Sat, 10 Jan 2004 22:17:41 EST, Robert Love said:

> The MHz value in /proc/cpuinfo should be updated as the CPU speed
> changes - that is, it is not calculated just at boot, but it is updated
> as the speed actually changes.

Yes, it should.  However, I remember chasing down a similar bug in the
SpeedStep code back around 2.5.73-75 timeframe (which managed to manifest as
the audio chipset latching onto the wrong clocking, no less - it wasn't till
later that I noticed that the frequency and bogomips numbers in /proc/cpuinfo
were bogus too).  I admit never checking if either the original code or the
patch were backported to 2.4.

http://marc.theaimsgroup.com/?l=linux-kernel&m=105859009128595&w=2
http://marc.theaimsgroup.com/?l=linux-kernel&m=105691055706753&w=2

(the final actual fix ended up being slightly different, but that was the bug).

Feel free to hit "delete" if this is irrelevant...

--==_Exmh_993915776P
Content-Type: application/pgp-signature

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.2.3 (GNU/Linux)
Comment: Exmh version 2.5 07/13/2001

iD8DBQFAAM0wcC3lWbTT17ARAnUnAKDpaXwmCUbg2++M27V5ZRp8kZnoqwCgkf1A
jJFf61/Q/fJVg3giNrM/GIo=
=HKeo
-----END PGP SIGNATURE-----

--==_Exmh_993915776P--
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/