[Cbe-oss-dev] powerpc/cell/cpufreq: add spu aware cpufreq governor
Dominik Brodowski
linux at dominikbrodowski.net
Fri Jul 11 04:05:53 EST 2008
On Tue, Jul 08, 2008 at 11:27:28AM -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.
Actually, "cpufreq-set -g spu_governor" should be enough. (BTW, do we really
want this name?)
Best,
Dominik
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