linux-kernel - Re: [PATCH v2] perf test: Fix test case perf evlist tests for s390x

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Message-ID: <CAP-5=fXZw9NA7bK6bH+hxPYG0nHGPYKqtYt3pg7iNmsQPWHRig@mail.gmail.com>
Date: Wed, 10 Dec 2025 10:35:01 -0800
From: Ian Rogers <irogers@...gle.com>
To: Thomas Richter <tmricht@...ux.ibm.com>
Cc: linux-kernel@...r.kernel.org, linux-s390@...r.kernel.org, 
	linux-perf-users@...r.kernel.org, acme@...nel.org, namhyung@...nel.org, 
	agordeev@...ux.ibm.com, gor@...ux.ibm.com, sumanthk@...ux.ibm.com, 
	hca@...ux.ibm.com, japo@...ux.ibm.com
Subject: Re: [PATCH v2] perf test: Fix test case perf evlist tests for s390x

On Tue, Dec 9, 2025 at 11:18 PM Thomas Richter <tmricht@...ux.ibm.com> wrote:
>
> Perf test case 78: perf evlist tests fails on s390. The failure
> is causes by grouping events cycles and instructions because
> sampling does only support event cycles.
> Change the group to software events to fix this.
>
> Output before:
>   # ./perf test 78
>   78: perf evlist tests              : FAILED!
>   #
>
> Output after:
>   # ./perf test 78
>   78: perf evlist tests              : Ok
>   #
>
> Fixes: db452961de939 ("perf tests evlist: Add basic evlist test")
> Signed-off-by: Thomas Richter <tmricht@...ux.ibm.com>

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

Thanks!

Ian

> ---
>  tools/perf/tests/shell/evlist.sh | 5 +++--
>  1 file changed, 3 insertions(+), 2 deletions(-)
>
> diff --git a/tools/perf/tests/shell/evlist.sh b/tools/perf/tests/shell/evlist.sh
> index 140f099e75c1..5632be391710 100755
> --- a/tools/perf/tests/shell/evlist.sh
> +++ b/tools/perf/tests/shell/evlist.sh
> @@ -38,13 +38,14 @@ test_evlist_simple() {
>
>  test_evlist_group() {
>         echo "Group evlist test"
> -       if ! perf record -e "{cycles,instructions}" -o "${perfdata}" true 2> /dev/null
> +       if ! perf record -e "{cpu-clock,task-clock}" -o "${perfdata}" \
> +               -- perf test -w noploop 2> /dev/null
>         then
>                 echo "Group evlist [Skipped event group recording failed]"
>                 return
>         fi
>
> -       if ! perf evlist -i "${perfdata}" -g | grep -q "{.*cycles.*,.*instructions.*}"
> +       if ! perf evlist -i "${perfdata}" -g | grep -q "{.*cpu-clock.*,.*task-clock.*}"
>         then
>                 echo "Group evlist [Failed to list event group]"
>                 err=1
> --
> 2.52.0
>