linux-kernel - RE: [PATCH v7 00/13] Implement AMD Pstate EPP Driver

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Date:   Mon, 12 Dec 2022 02:59:49 +0000
From:   "Yuan, Perry" <Perry.Yuan@....com>
To:     "Rafael J. Wysocki" <rafael@...nel.org>
CC:     "rafael.j.wysocki@...el.com" <rafael.j.wysocki@...el.com>,
        "Limonciello, Mario" <Mario.Limonciello@....com>,
        "Huang, Ray" <Ray.Huang@....com>,
        "viresh.kumar@...aro.org" <viresh.kumar@...aro.org>,
        "Sharma, Deepak" <Deepak.Sharma@....com>,
        "Fontenot, Nathan" <Nathan.Fontenot@....com>,
        "Deucher, Alexander" <Alexander.Deucher@....com>,
        "Huang, Shimmer" <Shimmer.Huang@....com>,
        "Du, Xiaojian" <Xiaojian.Du@....com>,
        "Meng, Li (Jassmine)" <Li.Meng@....com>,
        "Karny, Wyes" <Wyes.Karny@....com>,
        "linux-pm@...r.kernel.org" <linux-pm@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH v7 00/13] Implement AMD Pstate EPP Driver

[AMD Official Use Only - General]

Hi Rafael. 

> -----Original Message-----
> From: Rafael J. Wysocki <rafael@...nel.org>
> Sent: Thursday, December 8, 2022 7:36 PM
> To: Yuan, Perry <Perry.Yuan@....com>
> Cc: rafael.j.wysocki@...el.com; Limonciello, Mario
> <Mario.Limonciello@....com>; Huang, Ray <Ray.Huang@....com>;
> viresh.kumar@...aro.org; Sharma, Deepak <Deepak.Sharma@....com>;
> Fontenot, Nathan <Nathan.Fontenot@....com>; Deucher, Alexander
> <Alexander.Deucher@....com>; Huang, Shimmer
> <Shimmer.Huang@....com>; Du, Xiaojian <Xiaojian.Du@....com>; Meng,
> Li (Jassmine) <Li.Meng@....com>; Karny, Wyes <Wyes.Karny@....com>;
> linux-pm@...r.kernel.org; linux-kernel@...r.kernel.org
> Subject: Re: [PATCH v7 00/13] Implement AMD Pstate EPP Driver
> 
> Hi,
> 
> On Thu, Dec 8, 2022 at 12:19 PM Perry Yuan <perry.yuan@....com> wrote:
> >
> > Hi all,
> >
> > This patchset implements one new AMD CPU frequency driver
> > `amd-pstate-epp` instance for better performance and power control.
> > CPPC has a parameter called energy preference performance (EPP).
> > The EPP is used in the CCLK DPM controller to drive the frequency that
> > a core is going to operate during short periods of activity.
> > EPP values will be utilized for different OS profiles (balanced, performance,
> power savings).
> 
> I honestly don't think that this work is ready for 6.2.
> 
> The number of patches in the series seems to change frequently and there
> are active discussions around specific patches.
> 
> Accordingly, I will not consider applying it until 6.2-rc1 is out.
> 
> Thanks!

Thanks for your feedback on this.  I add some issue fix  and some documents patches to the series which changes the patches numbers.  
I will drive the feedback and will get review and ack flags before you help to merge it. 

Perry.