linux-kernel - Re: [PATCHv7 00/10] devfreq: Add devfreq-event class to provide raw data for devfreq device

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Message-id: <437622256.904751421056684753.JavaMail.weblogic@epmlwas01a>
Date:	Mon, 12 Jan 2015 09:58:07 +0000 (GMT)
From:	MyungJoo Ham <myungjoo.ham@...sung.com>
To:	최찬우 <cw00.choi@...sung.com>,
	"kgene@...nel.org" <kgene@...nel.org>
Cc:	박경민 <kyungmin.park@...sung.com>,
	"rafael.j.wysocki@...el.com" <rafael.j.wysocki@...el.com>,
	"mark.rutland@....com" <mark.rutland@....com>,
	ABHILASH KESAVAN <a.kesavan@...sung.com>,
	"tomasz.figa@...il.com" <tomasz.figa@...il.com>,
	Krzysztof Kozlowski <k.kozlowski@...sung.com>,
	Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>,
	"robh+dt@...nel.org" <robh+dt@...nel.org>,
	대인기 <inki.dae@...sung.com>,
	"linux-pm@...r.kernel.org" <linux-pm@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"linux-samsung-soc@...r.kernel.org" 
	<linux-samsung-soc@...r.kernel.org>
Subject: Re: [PATCHv7 00/10] devfreq: Add devfreq-event class to provide raw
 data for devfreq device

>   
>  This patchset add new devfreq_event class to provide raw data to determine
> current utilization of device  which is used for devfreq governor.
> 
> The following description explains the feature of two kind of devfreq class:
> - devfreq class (existing)
>  : devfreq consumer device use raw data from devfreq_event device for
>    determining proper current system state and change voltage/frequency
>    dynamically using various governors.
> - devfreq_event class (new)
>  : Provide measured raw data to devfreq device for governor
> 

Question: Applying this patchset seems to imply that
drivers/devfreq/exynos/exynos_ppmu.c becomes obsolete.
How do you want to address it? Do you think it'd be ok to remove
thse obsolete drivers after your successing patchset?

If it is ok to remove old drivers after applying the new patchset,
please inclde a patch that removes old drivers unless such a removal
might result in compatibility issues with old (yet another obsolete)
board files, which I don't think probable.


Cheers,
MyungJoo.