linux-kernel - Re: [PATCH 17/24] selftests/resctrl: Create struct for input parameter

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Date:   Thu, 2 Nov 2023 10:51:48 -0700
From:   Reinette Chatre <reinette.chatre@...el.com>
To:     Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>,
        <linux-kselftest@...r.kernel.org>, Shuah Khan <shuah@...nel.org>,
        "Shaopeng Tan" <tan.shaopeng@...fujitsu.com>,
        Maciej Wieczór-Retman 
        <maciej.wieczor-retman@...el.com>,
        Fenghua Yu <fenghua.yu@...el.com>
CC:     <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 17/24] selftests/resctrl: Create struct for input
 parameter

Hi Ilpo,

On 10/24/2023 2:26 AM, Ilpo Järvinen wrote:

...

> diff --git a/tools/testing/selftests/resctrl/mba_test.c b/tools/testing/selftests/resctrl/mba_test.c
> index d3bf4368341e..5157a3f74fee 100644
> --- a/tools/testing/selftests/resctrl/mba_test.c
> +++ b/tools/testing/selftests/resctrl/mba_test.c
> @@ -141,13 +141,13 @@ void mba_test_cleanup(void)
>  	remove(RESULT_FILE_NAME);
>  }
>  
> -int mba_schemata_change(int cpu_no, const char * const *benchmark_cmd)
> +int mba_schemata_change(const struct user_params *uparams)
>  {
>  	struct resctrl_val_param param = {
>  		.resctrl_val	= MBA_STR,
>  		.ctrlgrp	= "c1",
>  		.mongrp		= "m1",
> -		.cpu_no		= cpu_no,
> +		.cpu_no		= uparams->cpu,
>  		.filename	= RESULT_FILE_NAME,
>  		.bw_report	= "reads",
>  		.setup		= mba_setup
> @@ -156,7 +156,7 @@ int mba_schemata_change(int cpu_no, const char * const *benchmark_cmd)
>  
>  	remove(RESULT_FILE_NAME);
>  
> -	ret = resctrl_val(benchmark_cmd, &param);
> +	ret = resctrl_val(uparams->benchmark_cmd, &param);
>  	if (ret)
>  		goto out;
>  

How about a new member of struct resctrl_val_param that points to 
uparams? That would remove cpu_no from resctrl_val_param
and have everything available when a test needs to run ... not copying
some user parameters into struct resctrl_val_param and passing
others as parameters.

Reinette