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

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Date:   Wed, 28 Sep 2022 08:48:41 -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 9/27/2022 2:01 AM, tan.shaopeng@...itsu.com wrote:
> Hi Reinette,
> 
>> 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.

> 
>>> 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.
>>>
>>

Reinette