Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
Subject: Re: [RESEND PATCH 2/4] cpufreq: amd-pstate: Add test module for
 amd-pstate driver
To:     Meng Li <li.meng@amd.com>, Huang Rui <ray.huang@amd.com>,
        linux-pm@vger.kernel.org
Cc:     "Rafael J . Wysocki" <rafael.j.wysocki@intel.com>,
        Nathan Fontenot <nathan.fontenot@amd.com>,
        Deepak Sharma <deepak.sharma@amd.com>,
        Alex Deucher <alexander.deucher@amd.com>,
        Mario Limonciello <mario.limonciello@amd.com>,
        Jinzhou Su <Jinzhou.Su@amd.com>,
        Perry Yuan <Perry.Yuan@amd.com>,
        Xiaojian Du <Xiaojian.Du@amd.com>,
        Viresh Kumar <viresh.kumar@linaro.org>,
        Borislav Petkov <bp@alien8.de>, linux-kernel@vger.kernel.org,
        Shuah Khan <skhan@linuxfoundation.org>
References: <20220817034630.1172065-1-li.meng@amd.com>
 <20220817034630.1172065-3-li.meng@amd.com>
From:   Shuah Khan <skhan@linuxfoundation.org>
Message-ID: <0f9706b7-6dd5-663d-70cf-7221b5a1bfc5@linuxfoundation.org>
Date:   Fri, 26 Aug 2022 15:47:26 -0600
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101
 Thunderbird/78.8.1
MIME-Version: 1.0
In-Reply-To: <20220817034630.1172065-3-li.meng@amd.com>
Content-Type: text/plain; charset=utf-8; format=flowed
Content-Language: en-US
Content-Transfer-Encoding: 7bit
Precedence: bulk

On 8/16/22 9:46 PM, Meng Li wrote:
> Add amd-pstate-ut test module, this module is used by kselftest
> to unit test amd-pstate functionality. This module will be
> expected by some of selftests to be present and loaded.
> 
> Signed-off-by: Meng Li <li.meng@amd.com>
> Acked-by: Huang Rui <ray.huang@amd.com>
> Reviewed-by: Shuah Khan <skhan@linuxfoundation.org>
> ---
>   drivers/cpufreq/Kconfig.x86     |   7 +
>   drivers/cpufreq/Makefile        |   1 +
>   drivers/cpufreq/amd-pstate-ut.c | 293 ++++++++++++++++++++++++++++++++
>   3 files changed, 301 insertions(+)
>   create mode 100644 drivers/cpufreq/amd-pstate-ut.c
> 
> diff --git a/drivers/cpufreq/Kconfig.x86 b/drivers/cpufreq/Kconfig.x86
> index 55516043b656..fdd819069d72 100644
> --- a/drivers/cpufreq/Kconfig.x86
> +++ b/drivers/cpufreq/Kconfig.x86
> @@ -51,6 +51,13 @@ config X86_AMD_PSTATE
>   
>   	  If in doubt, say N.
>   
> +config X86_AMD_PSTATE_UT
> +	tristate "selftest for AMD Processor P-State driver"
> +	depends on X86 && ACPI_PROCESSOR
> +	default n
> +	help
> +	  This kernel module is used for testing. It's safe to say M here.
> +

Shouldn't this X86_AMD_PSTATE_UT depend on X86_AMD_PSTATE?
I am running a few tests and when I have X86_AMD_PSTATE_UT
enabled as built-in and X86_AMD_PSTATE is disabled, test
fails saying incorrect cpufreq driver?

Skipped: Test can only run on amd-pstate driver.

So it sounds like X86_AMD_PSTATE_UT depends on X86_AMD_PSTATE.

thanks,
-- Shuah