linux-kernel - Re: [PATCH 1/1] selftests: Fix lib.mk run

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Date:   Fri, 27 Apr 2018 14:42:14 -0600
From:   Shuah Khan <shuah@...nel.org>
To:     Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
        Shuah Khan <shuahkh@....samsung.com>
Cc:     linux-kernel <linux-kernel@...r.kernel.org>,
        linux-kselftest <linux-kselftest@...r.kernel.org>,
        Shuah Khan <shuah@...nel.org>
Subject: Re: [PATCH 1/1] selftests: Fix lib.mk run_tests target shell script

On 04/27/2018 02:17 PM, Mathieu Desnoyers wrote:
> ----- On Nov 1, 2017, at 6:28 PM, Shuah Khan shuahkh@....samsung.com wrote:
> 
>> On 11/01/2017 04:24 PM, Mathieu Desnoyers wrote:
>>> ----- On Nov 1, 2017, at 6:22 PM, Mathieu Desnoyers
>>> mathieu.desnoyers@...icios.com wrote:
>>>
>>>> ----- On Nov 1, 2017, at 5:33 PM, Shuah Khan shuahkh@....samsung.com wrote:
>>>>
>>>>> On 10/28/2017 07:46 AM, Mathieu Desnoyers wrote:
>>>>>> Within run_tests target, the whole script needs to be executed within
>>>>>> the same shell and not as separate subshells, so the initial test_num
>>>>>> variable set to 0 is still present when executing "test_num=`echo
>>>>>> $$test_num+1 | bc`;".
>>>>>>
>>>>>> Demonstration of the issue (make run_tests):
>>>>>>
>>>>>> TAP version 13
>>>>>> (standard_in) 1: syntax error
>>>>>> selftests: basic_test
>>>>>> ========================================
>>>>>> ok 1.. selftests: basic_test [PASS]
>>>>>> (standard_in) 1: syntax error
>>>>>> selftests: basic_percpu_ops_test
>>>>>> ========================================
>>>>>> ok 1.. selftests: basic_percpu_ops_test [PASS]
>>>>>> (standard_in) 1: syntax error
>>>>>> selftests: param_test
>>>>>> ========================================
>>>>>> ok 1.. selftests: param_test [PASS]
>>>>>
>>>>> Hi Mathieu,
>>>>>
>>>>> Odd. I don't see the error. I am curious if this specific to
>>>>> env. Can you reproduce this with one of the existing tests,
>>>>> kcmp or breakpoints
>>>>
>>>> Yes, it reproduces:
>>>>
>>>> cd tools/testing/selftests/kcmp
>>>> make run_tests
>>>> gcc -I../../../../usr/include/    kcmp_test.c  -o
>>>> /home/efficios/git/linux-rseq/tools/testing/selftests/kcmp/kcmp_test
>>>> TAP version 13
>>>> (standard_in) 1: syntax error
>>>> selftests: kcmp_test
>>>> ========================================
>>>> ok 1.. selftests: kcmp_test [PASS]
>>>>
>>>> cd tools/testing/selftests/breakpoints
>>>> make run_tests
>>>> gcc     step_after_suspend_test.c  -o
>>>> /home/efficios/git/linux-rseq/tools/testing/selftests/breakpoints/step_after_suspend_test
>>>> gcc     breakpoint_test.c  -o
>>>> /home/efficios/git/linux-rseq/tools/testing/selftests/breakpoints/breakpoint_test
>>>> TAP version 13
>>>> (standard_in) 1: syntax error
>>>> selftests: step_after_suspend_test
>>>> ========================================
>>>> not ok 1.. selftests:  step_after_suspend_test [FAIL]
>>>> (standard_in) 1: syntax error
>>>> selftests: breakpoint_test
>>>> ========================================
>>>> ok 1.. selftests: breakpoint_test [PASS]
>>>>
>>>
>>> The version of "make" on that machine is:
>>>
>>> make --version
>>> GNU Make 3.81
>>> Copyright (C) 2006  Free Software Foundation, Inc.
>>> This is free software; see the source for copying conditions.
>>> There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A
>>> PARTICULAR PURPOSE.
>>>
>>> This program built for x86_64-pc-linux-gnu
>>>
>>> (if it helps reproducing)
>>>
>>
>> Yup that's it. I have
>>
>> GNU Make 4.1
>> Built for x86_64-pc-linux-gnu
>> Copyright (C) 1988-2014 Free Software Foundation, Inc.
>> License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
>> This is free software: you are free to change and redistribute it.
>> There is NO WARRANTY, to the extent permitted by law.
>>
>> I will test with your patch and see what happens in my env.
> 
> Hi,
> 
> I still see the problem with v4.17-rc2. Did you have time to
> consider merging my fix ?
> 
> Thanks,
> 
> Mathieu

Sorry for the delay. It slipped through. I will queue this for the next rc. Thanks for
the ping. Hope it applies :)

thanks,
-- Shuah