linux-kernel - Re: [PATCH RESEND v6 0/9] cpupower: Add AMD P-State Support

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Date:   Sun, 20 Feb 2022 23:20:09 +0800
From:   Huang Rui <ray.huang@....com>
To:     Shuah Khan <skhan@...uxfoundation.org>
Cc:     "Rafael J . Wysocki" <rafael.j.wysocki@...el.com>,
        "linux-pm@...r.kernel.org" <linux-pm@...r.kernel.org>,
        "Sharma, Deepak" <Deepak.Sharma@....com>,
        "Deucher, Alexander" <Alexander.Deucher@....com>,
        "Limonciello, Mario" <Mario.Limonciello@....com>,
        Steven Noonan <steven@...vesoftware.com>,
        "Fontenot, Nathan" <Nathan.Fontenot@....com>,
        "Su, Jinzhou (Joe)" <Jinzhou.Su@....com>,
        "Du, Xiaojian" <Xiaojian.Du@....com>,
        "Yuan, Perry" <Perry.Yuan@....com>,
        "Meng, Li (Jassmine)" <Li.Meng@....com>,
        Borislav Petkov <bp@...en8.de>,
        Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...nel.org>,
        Viresh Kumar <viresh.kumar@...aro.org>,
        Steven Rostedt <rostedt@...dmis.org>,
        Giovanni Gherdovich <ggherdovich@...e.cz>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH RESEND v6 0/9] cpupower: Add AMD P-State Support

Hi Shuah,

I am glad to see your comments again. Thanks for your time!

On Sat, Feb 19, 2022 at 08:27:41AM +0800, Shuah Khan wrote:
> On 2/16/22 12:35 AM, Huang Rui wrote:
> > Hi Shuah,
> > 
> > Since AMD P-State kernel is merged into 5.17-rc1, I would like to continue
> > revising the AMD P-State support for the CPUPower tool. These series are
> > rebased on latest bleeding-edge, any comments are warm for me.
> > 
> > See patch series of CPUPower in below git repo:
> > V1: https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgit.kernel.org%2Fpub%2Fscm%2Flinux%2Fkernel%2Fgit%2Frui%2Flinux.git%2Flog%2F%3Fh%3Damd-pstate-dev-v1&amp;data=04%7C01%7Cray.huang%40amd.com%7C7f03b74e8f3044c8574008d9f33ea54e%7C3dd8961fe4884e608e11a82d994e183d%7C0%7C0%7C637808272662923642%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&amp;sdata=L9G4msSTFHOztI8Dj5en2aC229%2Bn4xZl%2BGYMOG4R2dg%3D&amp;reserved=0
> > V2: https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgit.kernel.org%2Fpub%2Fscm%2Flinux%2Fkernel%2Fgit%2Frui%2Flinux.git%2Flog%2F%3Fh%3Damd-pstate-dev-v2&amp;data=04%7C01%7Cray.huang%40amd.com%7C7f03b74e8f3044c8574008d9f33ea54e%7C3dd8961fe4884e608e11a82d994e183d%7C0%7C0%7C637808272662923642%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&amp;sdata=ApWETuX6J%2BK5fbHV7ym0%2BYawxD3TAIqaffOCRlBz56g%3D&amp;reserved=0
> > V3: https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgit.kernel.org%2Fpub%2Fscm%2Flinux%2Fkernel%2Fgit%2Frui%2Flinux.git%2Flog%2F%3Fh%3Damd-pstate-dev-v3&amp;data=04%7C01%7Cray.huang%40amd.com%7C7f03b74e8f3044c8574008d9f33ea54e%7C3dd8961fe4884e608e11a82d994e183d%7C0%7C0%7C637808272662923642%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&amp;sdata=wBn4bLwo4H8E8OIKbtIQ9Rw9AJ49ctk%2FpisN1P32Xpg%3D&amp;reserved=0
> > V4: https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgit.kernel.org%2Fpub%2Fscm%2Flinux%2Fkernel%2Fgit%2Frui%2Flinux.git%2Flog%2F%3Fh%3Damd-pstate-dev-v4&amp;data=04%7C01%7Cray.huang%40amd.com%7C7f03b74e8f3044c8574008d9f33ea54e%7C3dd8961fe4884e608e11a82d994e183d%7C0%7C0%7C637808272662923642%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&amp;sdata=XITGUWrl4J01mx0V12Unn0ZuODqhAbLuS2eNUIM7IBE%3D&amp;reserved=0
> > V5: https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgit.kernel.org%2Fpub%2Fscm%2Flinux%2Fkernel%2Fgit%2Frui%2Flinux.git%2Flog%2F%3Fh%3Damd-pstate-dev-v5&amp;data=04%7C01%7Cray.huang%40amd.com%7C7f03b74e8f3044c8574008d9f33ea54e%7C3dd8961fe4884e608e11a82d994e183d%7C0%7C0%7C637808272662923642%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&amp;sdata=D%2F2vCZrlrg3apxht1XX4GfRo1Unfc%2FMqyDX%2FRz0c%2FYU%3D&amp;reserved=0
> > V6: https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgit.kernel.org%2Fpub%2Fscm%2Flinux%2Fkernel%2Fgit%2Frui%2Flinux.git%2Flog%2F%3Fh%3Dcpupower-amd-pstate&amp;data=04%7C01%7Cray.huang%40amd.com%7C7f03b74e8f3044c8574008d9f33ea54e%7C3dd8961fe4884e608e11a82d994e183d%7C0%7C0%7C637808272662923642%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&amp;sdata=g%2FDKBuQirt3pB9dIXkTFbqjyz8LdWBFbhIZBYcRqD8o%3D&amp;reserved=0
> > 
> 
> A few checkpatch warns to fix. I usually ignore CHECK from checkpatch,
> but a few of them found on this series could improve the code.
> 

I will use checkpatch script to scan all patches in these series.

> Also is there a need to add/update manpages and documentation.
> 

Let me find a place to add some descriptions.

> I tested these my AMD Ryzen 7 4700G system. I didn't play with set commands
> and just the info ones.
> 
> cpupower info gave me this output. The first message is fine, but the
> second one is a bit odd. Should it just bail out right after the first
> message about "not support"
> 
> cpupower info
> 
> System does not support Intel's performance bias setting
> analyzing CPU 0:
> 

Let me take a look at this issue.

> Go ahead send me v7 for these and add any mapages/doc if necessary.
> I will get them into Linux 5.18-rc1
> 

No problem, I will address the comments and send V7.

Thanks,
Ray