From mboxrd@z Thu Jan 1 00:00:00 1970 From: Arjan van de Ven Subject: Re: [PATCH] 3/3 Dynamic cpufreq governor and updates to ACPI P-state driver Date: Tue, 21 Oct 2003 10:38:53 +0200 Sender: cpufreq-bounces+glkc-cpufreq=gmane.org@www.linux.org.uk Message-ID: <1066725533.5237.3.camel@laptop.fenrus.com> References: <88056F38E9E48644A0F562A38C64FB60077914@scsmsx403.sc.intel.com> Reply-To: arjanv@redhat.com Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============6124666445396576==" Return-path: In-Reply-To: <88056F38E9E48644A0F562A38C64FB60077914@scsmsx403.sc.intel.com> List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: cpufreq-bounces+glkc-cpufreq=gmane.org@www.linux.org.uk To: "Pallipadi, Venkatesh" Cc: cpufreq@www.linux.org.uk, "Nakajima, Jun" , linux-acpi , "Mallick, Asit K" , linux-kernel@vger.kernel.org, Dominik Brodowski --===============6124666445396576== Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="=-S/VVdAcv/ouC+l4UsFx7" --=-S/VVdAcv/ouC+l4UsFx7 Content-Type: text/plain Content-Transfer-Encoding: quoted-printable 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. 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. Note that I'm not totally against doing some of this in the kernel; I can well see the point of say, detecting an IRQ overload and based on that, go to max speed in the kernel because it's a situation where userspace doesn't even run; but the patch as is doesn't do any such advanced things... --=-S/VVdAcv/ouC+l4UsFx7 Content-Type: application/pgp-signature; name=signature.asc Content-Description: This is a digitally signed message part -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.2 (GNU/Linux) iD8DBQA/lPCdxULwo51rQBIRAv5VAJwMsnktwQ29tXjQfg4ErZ8/A74VyACfWT2O QCHHEyS3+KWp8/0icuBvGjk= =BS2i -----END PGP SIGNATURE----- --=-S/VVdAcv/ouC+l4UsFx7-- --===============6124666445396576== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline _______________________________________________ Cpufreq mailing list Cpufreq@www.linux.org.uk http://www.linux.org.uk/mailman/listinfo/cpufreq --===============6124666445396576==--