linux-kernel - Re: [PATCH] thermal: remove power allocator from list of default governors

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Message-ID: <1438791519.17718.77.camel@spandruv-DESK3.jf.intel.com>
Date:	Wed, 05 Aug 2015 09:18:39 -0700
From:	Srinivas Pandruvada <srinivas.pandruvada@...ux.intel.com>
To:	Javi Merino <javi.merino@....com>
Cc:	Dmitry Torokhov <dmitry.torokhov@...il.com>,
	Eduardo Valentin <edubezval@...il.com>,
	Zhang Rui <rui.zhang@...el.com>,
	Tushar Dave <tushar.n.dave@...el.com>,
	Lan Tianyu <tianyu.lan@...el.com>,
	Punit Agrawal <Punit.Agrawal@....com>,
	"linux-pm@...r.kernel.org" <linux-pm@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] thermal: remove power allocator from list of default
 governors

On Wed, 2015-08-05 at 09:37 +0100, Javi Merino wrote:
> On Tue, Aug 04, 2015 at 05:39:21PM +0100, Dmitry Torokhov wrote:
> > As it currently stands the power allocator governor can not handle
> > thermal zones that are not specifically crafted and therefore can not be
> > used as a default governor.
> > 
> > Users need to explicitly enable this governor for thermal zones that do
> > have enough information for its operation.
> > 
> > Signed-off-by: Dmitry Torokhov <dmitry.torokhov@...il.com>
> > ---
> >  drivers/thermal/Kconfig | 8 --------
> >  1 file changed, 8 deletions(-)
> > 
> > diff --git a/drivers/thermal/Kconfig b/drivers/thermal/Kconfig
> > index 0390044..34d05d3 100644
> > --- a/drivers/thermal/Kconfig
> > +++ b/drivers/thermal/Kconfig
> > @@ -82,14 +82,6 @@ config THERMAL_DEFAULT_GOV_USER_SPACE
> >  	  Select this if you want to let the user space manage the
> >  	  platform thermals.
> >  
> > -config THERMAL_DEFAULT_GOV_POWER_ALLOCATOR
> > -	bool "power_allocator"
> > -	select THERMAL_GOV_POWER_ALLOCATOR
> > -	help
> > -	  Select this if you want to control temperature based on
> > -	  system and device power allocation. This governor can only
> > -	  operate on cooling devices that implement the power API.
> > -
> 
> Currently the only way we have for a thermal zone configured from
> device tree to use a governor from the kernel boot is by using
> THERMAL_DEFAULT_GOV_*.  If we remove this option some devices won't
> have a workable thermal framework until userspace is up and running.
> 
> Would you rather have the power allocator governor accept every
> thermal zone?
May be allow to select when the binded cooling device can support this
governor.

Thanks,
Srinivas

> Cheers,
> Javi
> --
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