linux-kernel - Re: [PATCH 3/5] selftests/resctrl: Remove duplicate codes that clear each test result file

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Date:   Thu, 29 Sep 2022 08:28:50 -0700
From:   Reinette Chatre <reinette.chatre@...el.com>
To:     "tan.shaopeng@...itsu.com" <tan.shaopeng@...itsu.com>,
        Fenghua Yu <fenghua.yu@...el.com>,
        Shuah Khan <shuah@...nel.org>
CC:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-kselftest@...r.kernel.org" <linux-kselftest@...r.kernel.org>
Subject: Re: [PATCH 3/5] selftests/resctrl: Remove duplicate codes that clear
 each test result file

Hi Shaopeng,

On 9/28/2022 10:28 PM, tan.shaopeng@...itsu.com wrote:
>> On 9/27/2022 2:01 AM, tan.shaopeng@...itsu.com wrote:
>>>> On 9/13/2022 6:51 PM, Shaopeng Tan wrote:
>>>>> Before exiting each test function(run_cmt/cat/mbm/mba_test()),
>>>>> test results are printed by ksft_print_msg() and then temporary
>>>>> result files are cleaned by function cmt/cat/mbm/mba_test_cleanup().
>>>>> However, before running ksft_print_msg(), function
>>>>
>>>> before -> after?
>>>
>>> I think it is "before".
>>
>> hmmm ... if cmt/cat/mbm/mba_test_cleanup() was run before
>> ksft_print_msg() then there would be no test results to print, no?
>> The current implementation runs cmt/cat/mbm/mba_test_cleanup() after
>> ksft_print_msg() ... albeit twice.
> 
> 
> I am sorry I made a mistake in changelog.
> It should be ksft_test_result() instead of ksft_print_msg().
> 
> Changelog:
> Before exiting each test function(run_cmt/cat/mbm/mba_test()),
> test results (“ok”/”not ok”) are printed by ksft_test_result() and then temporary result
> files are cleaned by function cmt/cat/mbm/mba_test_cleanup().
> However, before running ksft_test_result(), function cmt/cat/mbm/mba_test_cleanup()
> has been run in each test function as follows:
>   cmt_resctrl_val()
>   cat_perf_miss_val()
>   mba_schemata_change()
>   mbm_bw_change()
> 
> Remove duplicate codes that clear each test result file.

This is clear, thank you very much.

Reinette