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

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Message-ID: <20220323071502.2674156-1-li.meng@amd.com>
Date:   Wed, 23 Mar 2022 15:14:59 +0800
From:   Meng Li <li.meng@....com>
To:     Shuah Khan <skhan@...uxfoundation.org>,
        "Rafael J . Wysocki" <rafael.j.wysocki@...el.com>,
        Huang Rui <ray.huang@....com>, <linux-pm@...r.kernel.org>
CC:     Nathan Fontenot <nathan.fontenot@....com>,
        Deepak Sharma <deepak.sharma@....com>,
        Alex Deucher <alexander.deucher@....com>,
        "Mario Limonciello" <mario.limonciello@....com>,
        Jinzhou Su <Jinzhou.Su@....com>,
        Perry Yuan <Perry.Yuan@....com>,
        Xiaojian Du <Xiaojian.Du@....com>,
        "Viresh Kumar" <viresh.kumar@...aro.org>,
        Borislav Petkov <bp@...en8.de>, <linux-kernel@...r.kernel.org>,
        Meng Li <li.meng@....com>
Subject: [PATCH 0/3] Add unit test module for AMD P-State driver

Hi all:

AMD P-State unit test(amd-pstate-ut) is a kernel module for testing the
functions of amd-pstate.
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.

When you test all the test cases, you will get the following test results.
The status "P" is pass, "F" is fail.
jasmine@...mine:/sys/module/amd_pstate_ut/parameters$ cat
unit_test
Index    Test cases              Status
0        stop                    [ ]
1        all                     [P]
2        x86_vendor              [P]
3        acpi_cpc_valid          [P]
4        modprobed_driver        [P]
5        capability_check        [P]
6        enable                  [P]
7        init_perf               [P]
8        support_boost           [P]
9        clear_status            [ ]
------------------------------------------
begin_index = 1 end_index= 8

For exmaple: The test case acpi_cpc_valid 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.

Thanks,
Jasmine

Meng Li (3):
  cpufreq: amd-pstate: Expose struct amd_cpudata
  cpupower: Introduce a new unit test module for AMD P-State driver
  Documentation: amd-pstate: Add unit test introduction

 Documentation/admin-guide/pm/amd-pstate.rst   | 221 +++++++
 drivers/cpufreq/amd-pstate.c                  |  60 +-
 include/linux/amd-pstate.h                    |  74 +++
 tools/power/cpupower/debug/kernel/Makefile    |  10 +-
 .../cpupower/debug/kernel/amd-pstate-ut.c     | 618 ++++++++++++++++++
 5 files changed, 923 insertions(+), 60 deletions(-)
 create mode 100644 include/linux/amd-pstate.h
 create mode 100644 tools/power/cpupower/debug/kernel/amd-pstate-ut.c

-- 
2.25.1