linux-kernel - Re: [PATCH v1 2/2] perf test: Add basic list test

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Date:   Wed, 29 Nov 2023 17:30:40 -0300
From:   Arnaldo Carvalho de Melo <acme@...nel.org>
To:     Ian Rogers <irogers@...gle.com>
Cc:     James Clark <james.clark@....com>,
        Adrian Hunter <adrian.hunter@...el.com>,
        Athira Rajeev <atrajeev@...ux.vnet.ibm.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        Mark Rutland <mark.rutland@....com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Jiri Olsa <jolsa@...nel.org>,
        Namhyung Kim <namhyung@...nel.org>,
        Kan Liang <kan.liang@...ux.intel.com>,
        linux-kernel@...r.kernel.org, linux-perf-users@...r.kernel.org
Subject: Re: [PATCH v1 2/2] perf test: Add basic list test

Em Wed, Nov 29, 2023 at 09:21:12AM -0800, Ian Rogers escreveu:
> On Wed, Nov 29, 2023 at 1:27 AM James Clark <james.clark@....com> wrote:
> >
> >
> >
> > On 29/11/2023 09:00, Adrian Hunter wrote:
> > > On 29/11/23 10:10, Ian Rogers wrote:
> > >> Test that json output produces valid json.
> > >>
> > >> Signed-off-by: Ian Rogers <irogers@...gle.com>
> > >> ---
> > >>  tools/perf/tests/shell/list.sh | 29 +++++++++++++++++++++++++++++
> > >>  1 file changed, 29 insertions(+)
> > >>  create mode 100755 tools/perf/tests/shell/list.sh
> > >>
> > >> diff --git a/tools/perf/tests/shell/list.sh b/tools/perf/tests/shell/list.sh
> > >> new file mode 100755
> > >> index 000000000000..286879a9837a
> > >> --- /dev/null
> > >> +++ b/tools/perf/tests/shell/list.sh
> > >> @@ -0,0 +1,29 @@
> > >> +#!/bin/sh
> > >> +# perf list tests
> > >> +# SPDX-License-Identifier: GPL-2.0
> > >> +
> > >> +set -e
> > >> +err=0
> > >> +
> > >> +if [ "x$PYTHON" == "x" ]
> > >> +then
> > >> +    if which python3 > /dev/null
> > >
> > > 'which' isn't always present.  Maybe
> > >
> > > python3 --version >/dev/null 2>&1 && PYTHON=python3
> > >
> >
> > Now that we have shellcheck integrated into the build, we could enable
> > the POSIX mode test which would warn against this usage of which and
> > suggest the alternative.
> >
> > At the moment though there are several other usages of which already in
> > the tests. And probably enabling POSIX mode would come with hundreds of
> > other warnings to fix.
> >
> > I'm not saying we shouldn't change this instance though, just adding the
> > info for the discussion.
> 
> Sounds good to me. Fwiw, the instance where I lifted this code was:
> https://git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools-next.git/tree/tools/perf/tests/shell/stat+json_output.sh?h=perf-tools-next#n12
> 
> With this change:
> ```
> diff --git a/tools/perf/tests/Makefile.tests b/tools/perf/tests/Makefile.tests
> index fdaca5f7a946..06de6d3f4842 100644
> --- a/tools/perf/tests/Makefile.tests
> +++ b/tools/perf/tests/Makefile.tests
> @@ -1,7 +1,7 @@
> # SPDX-License-Identifier: GPL-2.0
> # Athira Rajeev <atrajeev@...ux.vnet.ibm.com>, 2023
> 
> -PROGS := $(shell find tests/shell -perm -o=x -type f -name '*.sh')
> +PROGS := $(shell find tests/shell -executable -type f -name '*.sh')
> FILE_NAME := $(notdir $(PROGS))
> FILE_NAME := $(FILE_NAME:%=.%)
> LOGS := $(join $(dir $(PROGS)),$(FILE_NAME))
> ```
> 
> shellcheck now runs for me. I'll try adding the posix check into the
> patch series, as well as fixing other instances I can see.

So I'll wait for a v2 for this one, ok?

- Arnaldo