linux-kernel - Re: [PATCH 1/7] perf test: Skip reason for suites with 1 test

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Date:   Fri, 13 May 2022 17:46:43 +0100
From:   John Garry <john.garry@...wei.com>
To:     Ian Rogers <irogers@...gle.com>
CC:     Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        Arnaldo Carvalho de Melo <acme@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Jiri Olsa <jolsa@...nel.org>,
        "Namhyung Kim" <namhyung@...nel.org>,
        Riccardo Mancini <rickyman7@...il.com>,
        "Sohaib Mohamed" <sohaib.amhmd@...il.com>,
        Carsten Haitzler <carsten.haitzler@....com>,
        Marco Elver <elver@...gle.com>,
        Michael Petlan <mpetlan@...hat.com>,
        <linux-perf-users@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        Stephane Eranian <eranian@...gle.com>
Subject: Re: [PATCH 1/7] perf test: Skip reason for suites with 1 test

On 13/05/2022 17:34, Ian Rogers wrote:
>>>> john@...alhost:~/acme/tools/perf> sudo ./perf test 63
>>>> 63: Test libpfm4 support : Skip (not compiled in)
>>>>
>>>> Although it is odd to have a single sub-test, is there a reason for
>>>> which we don't print its name? We print the name when there are multiple
>>>> sub-tests.
>>> The reason was to replicate the existing "perf test" behavior before
>>> the kunit style transition. The main place we get tests with a single
>>> sub-test is from the DEFINE_SUITE macro:
>>> https://git.kernel.org/pub/scm/linux/kernel/git/acme/linux.git/tree/tools/perf/tests/tests.h?h=perf/core#n67
>>> I agree it looks kind of weird and was inheriting the data structures
>>> from kunit and the format of the output from perf test.
>> Out of curiosity, which suite is this that you find only has a single
>> subtest? Does it possibly only have a single subtest as some others may
>> be compiled out?
> I was getting it when I added a skip message to the openat syscall
> tests in patch 3:
> https://lore.kernel.org/lkml/20220513040519.1499333-4-irogers@google.com/
> 
> I didn't see any changes with any existing tests.

I suppose it works when the suite has the same name as the subtest, so, 
FWIW:

Reviewed-by: John Garry <john.garry@...wei.com>