linux-kernel - Re: [PATCH v2 0/3] Add unit test module for AMD P-State driver

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Date:   Sun, 17 Apr 2022 09:38:47 +0800
From:   Huang Rui <ray.huang@....com>
To:     "Rafael J. Wysocki" <rafael@...nel.org>,
        "Meng, Li (Jassmine)" <Li.Meng@....com>
Cc:     Shuah Khan <skhan@...uxfoundation.org>,
        "Rafael J . Wysocki" <rafael.j.wysocki@...el.com>,
        Linux PM <linux-pm@...r.kernel.org>,
        "Fontenot, Nathan" <Nathan.Fontenot@....com>,
        "Sharma, Deepak" <Deepak.Sharma@....com>,
        "Deucher, Alexander" <Alexander.Deucher@....com>,
        "Limonciello, Mario" <Mario.Limonciello@....com>,
        "Su, Jinzhou (Joe)" <Jinzhou.Su@....com>,
        "Yuan, Perry" <Perry.Yuan@....com>,
        "Du, Xiaojian" <Xiaojian.Du@....com>,
        Viresh Kumar <viresh.kumar@...aro.org>,
        Borislav Petkov <bp@...en8.de>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 0/3] Add unit test module for AMD P-State driver

On Wed, Apr 13, 2022 at 11:41:44PM +0800, Rafael J. Wysocki wrote:
> On Wed, Apr 13, 2022 at 11:06 AM Meng Li <li.meng@....com> wrote:
> >
> > Hi all:
> >
> > AMD P-State unit test(amd_pstate_testmod) is a kernel module for testing
> > the functions of amd-pstate driver.
> > It could import as a module to launch some test tasks.
> >
> > We upstream out AMD P-state driver into Linux kernel and use this unit
> > test module to verify the required conditions and basic functions of
> > amd-pstate before integration test.
> >
> > We use test module in the kselftest frameworks to implement it.
> > We create amd_pstate_testmod module and tie it into kselftest.
> >
> > For exmaple: The test case aput_acpi_cpc is used to check whether the
> > _CPC object is exist in SBIOS.
> > The amd-pstate initialization will fail if the _CPC in ACPI SBIOS is
> > not existed at the detected processor, so it is a necessary condition.
> >
> > At present, its test cases are very simple, and the corresponding test
> > cases will continue to be added later to improve the test coverage.
> >
> > See patch series in below git repo:
> > V1: https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Flore.kernel.org%2Flinux-pm%2F20220323071502.2674156-1-li.meng%40amd.com%2F&amp;data=04%7C01%7Cray.huang%40amd.com%7C7a5d4998e2ca413a215b08da1d6425e4%7C3dd8961fe4884e608e11a82d994e183d%7C0%7C0%7C637854613222577975%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&amp;sdata=8fAzN5hea4sVO5E7%2B9Uh9VSsyt29gM2%2FCkMXHS0%2FfP4%3D&amp;reserved=0
> >
> > Changes from V1 -> V2:
> > - cpufreq: amd-pstate:
> > - - add a trailing of amd-pstate.h to MAINTAINER AMD PSTATE DRIVER
> > - selftests: cpufreq
> > - - add a wrapper shell script for the amd_pstate_testmod module
> > - selftests: cpufreq:
> > - - remove amd_pstate_testmod kernel module to .../cpufreq/amd_pstate_testmod
> > - Documentation: amd-pstate:
> > - - amd_pstate_testmod rst document is not provided at present.
> >
> > Thanks,
> > Jasmine
> >
> > Meng Li (3):
> >   cpufreq: amd-pstate: Expose struct amd_cpudata
> 
> Please collect an ACK from Ray for this one as per MAINTAINERS and I
> will leave the series to Shuah as it is selftests mostly.
> 
> Thanks!
> 

Thanks, Rafael!

Jassmine, I think you can mark all patches as "v2" not only the cover
letter. Then we can separate these series easily.

Thanks,
Ray

> >   selftests: cpufreq: Add wapper script for test AMD P-State
> >   selftests: cpufreq: Add amd_pstate_testmod kernel module for testing
> >
> >  MAINTAINERS                                   |   1 +
> >  drivers/cpufreq/amd-pstate.c                  |  60 +---
> >  include/linux/amd-pstate.h                    |  74 +++++
> >  tools/testing/selftests/cpufreq/Makefile      |   2 +-
> >  .../selftests/cpufreq/amd_pstate_testmod.sh   |   4 +
> >  .../cpufreq/amd_pstate_testmod/Makefile       |  20 ++
> >  .../amd_pstate_testmod/amd_pstate_testmod.c   | 302 ++++++++++++++++++
> >  tools/testing/selftests/cpufreq/config        |   1 +
> >  8 files changed, 404 insertions(+), 60 deletions(-)
> >  create mode 100644 include/linux/amd-pstate.h
> >  create mode 100755 tools/testing/selftests/cpufreq/amd_pstate_testmod.sh
> >  create mode 100644 tools/testing/selftests/cpufreq/amd_pstate_testmod/Makefile
> >  create mode 100644 tools/testing/selftests/cpufreq/amd_pstate_testmod/amd_pstate_testmod.c
> >
> > --
> > 2.25.1
> >