Re: [PATCH 4/4] omap: cpu: Power tracking support for cgroup cpuacct

[Nishanth Menon]

Mike Chan had written, on 05/19/2010 01:56 PM, the following:
> On Wed, May 19, 2010 at 8:34 AM, Thomas Renninger <trenn@xxxxxxx> wrote:
> > On Wednesday 19 May 2010 15:11:03 Nishanth Menon wrote:
> > > Mike Chan had written, on 05/18/2010 08:30 PM, the following:
> > > > Specify new power field in struct omap_opp, which is
> > > > power exported in milliWatt.
> > ...
> > > > +           totalpower += cpuacct_freq[i] * mpu_opps[i + 1].power;
> > ...
> > > > +   unsigned long power; /* power consumed running at OPP in
> > milliWatts */
> > > this conflicts with the OPP layer implementation. this structure will
> > > disappear for good.
>
> Okay, I wasn't sure what to use. The omap-pm branch uses omap_opp for
> the mpu frequencies. However it looks like struct prcm_config is used
> in linux-next for mpu frequencies, but there are deprecated comments
> around this struct definition so I'm not sure where what struct I
> should be using.

Kevin can probably comment on opp upstream plans.

> > Ah yes, another question:
> > The power variable in struct omap_opp never gets initialized
> > with a sane value, something is wrong...
>
> You're right, this last patch won't work on linux-next, it seems quite
> a bit has changed in the omap specific. Previously board files can
> register their OPP table which is an array of struct omp_opp, which is
> exactly what I do for Droid in our android-omap branch.
>
> I'm hoping some omap folks can offer some suggestions for what needs
> to be changed.
>
> -- Mike
>
> >     Thomas


--
Regards,
Nishanth Menon
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