linux-kernel - Re: [PATCH 2/7] selftests/resctrl: Correct benchmark command help

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Date:   Mon, 14 Aug 2023 10:49:02 -0700
From:   Reinette Chatre <reinette.chatre@...el.com>
To:     Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>,
        Shuah Khan <skhan@...uxfoundation.org>,
        <linux-kselftest@...r.kernel.org>, Shuah Khan <shuah@...nel.org>,
        Maciej Wieczor-Retman <maciej.wieczor-retman@...el.com>,
        Fenghua Yu <fenghua.yu@...el.com>,
        <linux-kernel@...r.kernel.org>
CC:     Shaopeng Tan <tan.shaopeng@...fujitsu.com>
Subject: Re: [PATCH 2/7] selftests/resctrl: Correct benchmark command help

Hi Ilpo,

On 8/8/2023 2:16 AM, Ilpo Järvinen wrote:
> Benchmark command must be the last argument because it consumes all the
> remaining arguments but help misleadingly shows it as the first
> argument. The benchmark command is also shown in quotes but it does not
> match with the code.
> 
> Correct -b argument place in the help message and remove the quotes.
> Tweak also how the options are presented by using ... notation.
> 
> Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>
> ---
>  tools/testing/selftests/resctrl/resctrl_tests.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/tools/testing/selftests/resctrl/resctrl_tests.c b/tools/testing/selftests/resctrl/resctrl_tests.c
> index eef9e02516ad..559868b16079 100644
> --- a/tools/testing/selftests/resctrl/resctrl_tests.c
> +++ b/tools/testing/selftests/resctrl/resctrl_tests.c
> @@ -52,7 +52,7 @@ int get_vendor(void)
>  
>  static void cmd_help(void)
>  {
> -	printf("usage: resctrl_tests [-h] [-b \"benchmark_cmd [options]\"] [-t test list] [-n no_of_bits]\n");
> +	printf("usage: resctrl_tests [-h] [-t test list] [-n no_of_bits] [-b benchmark_cmd [option]...]\n");
>  	printf("\t-b benchmark_cmd [options]: run specified benchmark for MBM, MBA and CMT\n");

Considering it was documented goal of patch to use "..." notation, should
it be done consistently by changing above line also?

>  	printf("\t   default benchmark is builtin fill_buf\n");
>  	printf("\t-t test list: run tests specified in the test list, ");

Reinette