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

From: Rafael J. Wysocki
Date: Wed Apr 13 2022 - 11:42:04 EST


On Wed, Apr 13, 2022 at 11:06 AM Meng Li <li.meng@xxxxxxx> 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://lore.kernel.org/linux-pm/20220323071502.2674156-1-li.meng@xxxxxxx/
>
> 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!

> 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
>