linux-kernel - Re: [PATCH] perf probe: skip test_uprobe_from_different

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Date:   Fri, 28 Jul 2023 08:46:58 -0700
From:   Ian Rogers <irogers@...gle.com>
To:     Georg Müller <georgmueller@....net>
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>,
        Adrian Hunter <adrian.hunter@...el.com>,
        "Masami Hiramatsu (Google)" <mhiramat@...nel.org>,
        Arnaldo Carvalho de Melo <acme@...hat.com>,
        linux-perf-users@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] perf probe: skip test_uprobe_from_different_cu if there
 is no gcc

On Fri, Jul 28, 2023 at 8:19 AM Georg Müller <georgmueller@....net> wrote:
>
> Without gcc, the test will fail.
>
> On cleanup, ignore probe removal errors. Otherwise, in case of an error
> adding the probe, the temporary directory is not removed.
>
> Fixes: 56cbeacf1435 ("perf probe: Add test for regression introduced by switch to die_get_decl_file()")
> Signed-off-by: Georg Müller <georgmueller@....net>
> Link: https://lore.kernel.org/r/CAP-5=fUP6UuLgRty3t2=fQsQi3k4hDMz415vWdp1x88QMvZ8ug@mail.gmail.com/

Acked-by: Ian Rogers <irogers@...gle.com>

Thanks!
Ian

> ---
>  tools/perf/tests/shell/test_uprobe_from_different_cu.sh | 8 +++++++-
>  1 file changed, 7 insertions(+), 1 deletion(-)
>
> diff --git a/tools/perf/tests/shell/test_uprobe_from_different_cu.sh b/tools/perf/tests/shell/test_uprobe_from_different_cu.sh
> index 00d2e0e2e0c2..319f36ebb9a4 100755
> --- a/tools/perf/tests/shell/test_uprobe_from_different_cu.sh
> +++ b/tools/perf/tests/shell/test_uprobe_from_different_cu.sh
> @@ -4,6 +4,12 @@
>
>  set -e
>
> +# skip if there's no gcc
> +if ! [ -x "$(command -v gcc)" ]; then
> +        echo "failed: no gcc compiler"
> +        exit 2
> +fi
> +
>  temp_dir=$(mktemp -d /tmp/perf-uprobe-different-cu-sh.XXXXXXXXXX)
>
>  cleanup()
> @@ -11,7 +17,7 @@ cleanup()
>         trap - EXIT TERM INT
>         if [[ "${temp_dir}" =~ ^/tmp/perf-uprobe-different-cu-sh.*$ ]]; then
>                 echo "--- Cleaning up ---"
> -               perf probe -x ${temp_dir}/testfile -d foo
> +               perf probe -x ${temp_dir}/testfile -d foo || true
>                 rm -f "${temp_dir}/"*
>                 rmdir "${temp_dir}"
>         fi
> --
> 2.41.0
>