From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262602AbTJUKAV (ORCPT ); Tue, 21 Oct 2003 06:00:21 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262709AbTJUKAV (ORCPT ); Tue, 21 Oct 2003 06:00:21 -0400 Received: from mid-1.inet.it ([213.92.5.18]:64666 "EHLO mid-1.inet.it") by vger.kernel.org with ESMTP id S262602AbTJUKAQ (ORCPT ); Tue, 21 Oct 2003 06:00:16 -0400 Date: Tue, 21 Oct 2003 11:59:26 +0200 From: Mattia Dongili To: cpufreq@www.linux.org.uk, linux-kernel@vger.kernel.org Subject: Re: [PATCH] 3/3 Dynamic cpufreq governor and updates to ACPI P-state driver Message-ID: <20031021095925.GB893@inferi.kami.home> Reply-To: dongili@supereva.it Mail-Followup-To: cpufreq@www.linux.org.uk, linux-kernel@vger.kernel.org References: <88056F38E9E48644A0F562A38C64FB60077914@scsmsx403.sc.intel.com> <1066725533.5237.3.camel@laptop.fenrus.com> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="XsQoSWH+UP9D9v3l" Content-Disposition: inline In-Reply-To: <1066725533.5237.3.camel@laptop.fenrus.com> User-Agent: Mutt/1.5.4i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org --XsQoSWH+UP9D9v3l Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Tue, Oct 21, 2003 at 10:38:53AM +0200, Arjan van de Ven wrote: > On Tue, 2003-10-21 at 04:56, Pallipadi, Venkatesh wrote: > > Patch 3/3: New dynamic cpufreq driver (called=20 > > DemandBasedSwitch driver), which periodically monitors CPU=20 > > usage and changes the CPU frequency based on the demand. >=20 >=20 > it's all nice code and such, but I still wonder why this can't be done > by a userland policy daemon. The 2.6 kernel has the infrastructure to > give very detailed information to userspace (eg top etc) about idle > percentages...... I didn't see anything in this driver that couldn't be > done from userspace. I remember Linus forcing a kernel only policy management: http://www.linux.org.uk/mailman/private/cpufreq/2002-August/000865.html Also: I think the userspace governor is a workaround to allow userspace policies. ciao --=20 mattia :wq! --XsQoSWH+UP9D9v3l Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.3 (GNU/Linux) iD8DBQE/lQN9gpRPaOotLEERAhR0AKCLhO55PN1PjYprhSNcct/Afz8B0ACeKjJO P+WoP9/yb1+VAErXh03ShN8= =Zi7R -----END PGP SIGNATURE----- --XsQoSWH+UP9D9v3l--