linux-kernel - Re: [PATCH V3 2/3] selftests: cpufreq: Add wapper script for test AMD P-State

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Date:   Fri, 22 Apr 2022 11:48:43 -0600
From:   Shuah Khan <skhan@...uxfoundation.org>
To:     Meng Li <li.meng@....com>, Huang Rui <ray.huang@....com>,
        linux-pm@...r.kernel.org
Cc:     "Rafael J . Wysocki" <rafael.j.wysocki@...el.com>,
        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,
        Shuah Khan <skhan@...uxfoundation.org>
Subject: Re: [PATCH V3 2/3] selftests: cpufreq: Add wapper script for test AMD
 P-State

On 4/21/22 1:41 AM, Meng Li wrote:
> Adds a wrapper shell script for the amd_pstate_testmod module.
> 
> Signed-off-by: Meng Li <li.meng@....com>
> ---
>   tools/testing/selftests/cpufreq/amd_pstate_testmod.sh | 4 ++++
>   tools/testing/selftests/cpufreq/config                | 1 +
>   tools/testing/selftests/cpufreq/main.sh               | 1 +
>   3 files changed, 6 insertions(+)
>   create mode 100755 tools/testing/selftests/cpufreq/amd_pstate_testmod.sh
> 
> diff --git a/tools/testing/selftests/cpufreq/amd_pstate_testmod.sh b/tools/testing/selftests/cpufreq/amd_pstate_testmod.sh
> new file mode 100755
> index 000000000000..5398ad568885
> --- /dev/null
> +++ b/tools/testing/selftests/cpufreq/amd_pstate_testmod.sh
> @@ -0,0 +1,4 @@
> +#!/bin/sh
> +# SPDX-License-Identifier: GPL-2.0
> +# Tests the AMD P-State unit test infrastructure using amd_pstate_testmod kernel module.
> +$(dirname $0)/../kselftest/module.sh "amd_pstate_testmod" amd_pstate_testmod

The script could load the module and unload once the test is complete.

> diff --git a/tools/testing/selftests/cpufreq/config b/tools/testing/selftests/cpufreq/config
> index 75e900793e8a..374a8adbb34c 100644
> --- a/tools/testing/selftests/cpufreq/config
> +++ b/tools/testing/selftests/cpufreq/config
> @@ -13,3 +13,4 @@ CONFIG_DEBUG_LOCK_ALLOC=y
>   CONFIG_PROVE_LOCKING=y
>   CONFIG_LOCKDEP=y
>   CONFIG_DEBUG_ATOMIC_SLEEP=y
> +CONFIG_AMD_PSTATE_TESTMOD=m
> diff --git a/tools/testing/selftests/cpufreq/main.sh b/tools/testing/selftests/cpufreq/main.sh
> index 60ce18ed0666..d3602fa11392 100755
> --- a/tools/testing/selftests/cpufreq/main.sh
> +++ b/tools/testing/selftests/cpufreq/main.sh
> @@ -6,6 +6,7 @@ source cpufreq.sh
>   source governor.sh
>   source module.sh
>   source special-tests.sh
> +source amd_pstate_testmod.sh
>   

Does the script check if the test module is loaded and bail out?
I don't see the check for CONFIG_AMD_PSTATE_TESTMOD enable and
module load.

>   FUNC=basic	# do basic tests by default
>   OUTFILE=cpufreq_selftest
> 

thanks,
-- Shuah