linux-kernel - Re: [PATCH v1 16/17] perf tests evlist: Add basic evlist test

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Message-ID: <aSaqH8xF7zcjq2Nc@google.com>
Date: Tue, 25 Nov 2025 23:19:59 -0800
From: Namhyung Kim <namhyung@...nel.org>
To: Ian Rogers <irogers@...gle.com>
Cc: Peter Zijlstra <peterz@...radead.org>, Ingo Molnar <mingo@...hat.com>,
	Arnaldo Carvalho de Melo <acme@...nel.org>,
	Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
	Jiri Olsa <jolsa@...nel.org>,
	Adrian Hunter <adrian.hunter@...el.com>,
	James Clark <james.clark@...aro.org>,
	Collin Funk <collin.funk1@...il.com>,
	Dmitry Vyukov <dvyukov@...gle.com>, Andi Kleen <ak@...ux.intel.com>,
	Thomas Falcon <thomas.falcon@...el.com>, Leo Yan <leo.yan@....com>,
	Yicong Yang <yangyicong@...ilicon.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	"Masami Hiramatsu (Google)" <mhiramat@...nel.org>,
	Stephen Brennan <stephen.s.brennan@...cle.com>,
	Haibo Xu <haibo1.xu@...el.com>, linux-kernel@...r.kernel.org,
	linux-perf-users@...r.kernel.org
Subject: Re: [PATCH v1 16/17] perf tests evlist: Add basic evlist test

On Sat, Nov 22, 2025 at 12:19:28AM -0800, Ian Rogers wrote:
> Add test that evlist reports expected events from perf record.
> 
> Signed-off-by: Ian Rogers <irogers@...gle.com>
> ---
>  tools/perf/tests/shell/evlist.sh | 79 ++++++++++++++++++++++++++++++++
>  1 file changed, 79 insertions(+)
>  create mode 100755 tools/perf/tests/shell/evlist.sh
> 
> diff --git a/tools/perf/tests/shell/evlist.sh b/tools/perf/tests/shell/evlist.sh
> new file mode 100755
> index 000000000000..140f099e75c1
> --- /dev/null
> +++ b/tools/perf/tests/shell/evlist.sh
> @@ -0,0 +1,79 @@
> +#!/bin/bash
> +# perf evlist tests
> +# SPDX-License-Identifier: GPL-2.0
> +
> +set -e
> +
> +err=0
> +perfdata=$(mktemp /tmp/__perf_test.perf.data.XXXXX)
> +
> +cleanup() {
> +	rm -f "${perfdata}"
> +	trap - EXIT TERM INT
> +}
> +
> +trap_cleanup() {
> +	echo "Unexpected signal in ${FUNCNAME[1]}"
> +	cleanup
> +	exit 1
> +}
> +trap trap_cleanup EXIT TERM INT
> +
> +test_evlist_simple() {
> +	echo "Simple evlist test"
> +	if ! perf record -e cycles -o "${perfdata}" true 2> /dev/null

I think we need to use a software event to make sure it can run on any
platforms.

Thanks,
Namhyung


> +	then
> +		echo "Simple evlist [Failed record]"
> +		err=1
> +		return
> +	fi
> +	if ! perf evlist -i "${perfdata}" | grep -q "cycles"
> +	then
> +		echo "Simple evlist [Failed to list event]"
> +		err=1
> +		return
> +	fi
> +	echo "Simple evlist test [Success]"
> +}
> +
> +test_evlist_group() {
> +	echo "Group evlist test"
> +	if ! perf record -e "{cycles,instructions}" -o "${perfdata}" true 2> /dev/null
> +	then
> +		echo "Group evlist [Skipped event group recording failed]"
> +		return
> +	fi
> +
> +	if ! perf evlist -i "${perfdata}" -g | grep -q "{.*cycles.*,.*instructions.*}"
> +	then
> +		echo "Group evlist [Failed to list event group]"
> +		err=1
> +		return
> +	fi
> +	echo "Group evlist test [Success]"
> +}
> +
> +test_evlist_verbose() {
> +	echo "Event configuration evlist test"
> +	if ! perf record -e cycles -o "${perfdata}" true 2> /dev/null
> +	then
> +		echo "Event configuration evlist [Failed record]"
> +		err=1
> +		return
> +	fi
> +
> +	if ! perf evlist -i "${perfdata}" -v | grep -q "config:"
> +	then
> +		echo "Event configuration evlist [Failed to list verbose info]"
> +		err=1
> +		return
> +	fi
> +	echo "Event configuration evlist test [Success]"
> +}
> +
> +test_evlist_simple
> +test_evlist_group
> +test_evlist_verbose
> +
> +cleanup
> +exit $err
> -- 
> 2.52.0.rc2.455.g230fcf2819-goog
>