From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Subject: Re: powerpc/cell/cpufreq: add spu aware cpufreq governor From: Benjamin Herrenschmidt To: Dave Jones In-Reply-To: <20080708152728.GF4997@codemonkey.org.uk> References: <200807071702.31240.arnd@arndb.de> <20080707213105.GD4997@codemonkey.org.uk> <200807080843.43674.arnd@arndb.de> <20080708152728.GF4997@codemonkey.org.uk> Content-Type: text/plain Date: Wed, 09 Jul 2008 13:41:38 +1000 Message-Id: <1215574898.8970.308.camel@pasglop> Mime-Version: 1.0 Cc: Stephen Rothwell , Arnd Bergmann , cpufreq@lists.linux.org.uk, linuxppc-dev@ozlabs.org, Jeremy Kerr , cbe-oss-dev@ozlabs.org Reply-To: benh@kernel.crashing.org List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , On Tue, 2008-07-08 at 11:27 -0400, Dave Jones wrote: > On Tue, Jul 08, 2008 at 08:43:43AM +0200, Arnd Bergmann wrote: > > On Monday 07 July 2008, Dave Jones wrote: > > > One question I do have though, is how userspace scripts are supposed > > > to know they're to echo cbe_spu_governor into the relevant parts of > > > sysfs. I've not used anything with a cell. Do they expose the SPUs > > > as regular CPUs, or do they show up in a different part of the tree? > > > > An SPU is very different from a CPU from the user perspective. > > SPUs show up in /sys/devices/system/spus, and if a user wants to access > > them, the "spufs" file system needs to be mounted in the system, by > > convention on /spu. > > Ok, that should be fairly simple to write scripts for. > All sounds good to me. Can I add your Acked-by ? Cheers, Ben.