linux-kernel - [PATCH v1] perf tests kwork: Add basic kwork coverage tests

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Message-ID: <20251209170814.2009253-1-irogers@google.com>
Date: Tue,  9 Dec 2025 09:08:11 -0800
From: Ian Rogers <irogers@...gle.com>
To: Feng Yang <yangfeng@...inos.cn>, Yang Jihong <yangjihong1@...wei.com>, 
	Peter Zijlstra <peterz@...radead.org>, Ingo Molnar <mingo@...hat.com>, 
	Arnaldo Carvalho de Melo <acme@...nel.org>, Namhyung Kim <namhyung@...nel.org>, 
	Alexander Shishkin <alexander.shishkin@...ux.intel.com>, Jiri Olsa <jolsa@...nel.org>, 
	Ian Rogers <irogers@...gle.com>, Adrian Hunter <adrian.hunter@...el.com>, 
	linux-kernel@...r.kernel.org, linux-perf-users@...r.kernel.org
Subject: [PATCH v1] perf tests kwork: Add basic kwork coverage tests

Add basic kwork coverage tests for record, report, latency, timehist
and top.

Signed-off-by: Ian Rogers <irogers@...gle.com>
---
 tools/perf/tests/shell/kwork.sh | 79 +++++++++++++++++++++++++++++++++
 1 file changed, 79 insertions(+)
 create mode 100755 tools/perf/tests/shell/kwork.sh

diff --git a/tools/perf/tests/shell/kwork.sh b/tools/perf/tests/shell/kwork.sh
new file mode 100755
index 000000000000..42bfd9382816
--- /dev/null
+++ b/tools/perf/tests/shell/kwork.sh
@@ -0,0 +1,79 @@
+#!/bin/bash
+# perf kwork tests
+# SPDX-License-Identifier: GPL-2.0
+
+set -e
+
+# Root permissions required for tracing events.
+if [ "$(id -u)" != 0 ]; then
+	echo "[Skip] No root permission"
+	exit 2
+fi
+
+err=0
+perfdata=$(mktemp /tmp/__perf_test_kwork.perf.data.XXXXX)
+
+cleanup() {
+	rm -f "${perfdata}"
+	rm -f "${perfdata}".old
+
+	trap - EXIT TERM INT
+}
+
+trap_cleanup() {
+	echo "Unexpected signal in ${FUNCNAME[1]}"
+	cleanup
+	exit 1
+}
+trap trap_cleanup EXIT TERM INT
+
+test_kwork_record() {
+	echo "Kwork record"
+	perf kwork record -o "${perfdata}" -- sleep 1
+	echo "Kwork record [Success]"
+}
+
+test_kwork_report() {
+	echo "Kwork report"
+	if ! perf kwork report -i "${perfdata}" | grep -q "Kwork Name"; then
+		echo "Kwork report [Failed missing output]"
+		err=1
+	fi
+	echo "Kwork report [Success]"
+}
+
+test_kwork_latency() {
+	echo "Kwork latency"
+	if ! perf kwork latency -i "${perfdata}" | grep -q "Avg delay"; then
+		echo "Kwork latency [Failed missing output]"
+		err=1
+	fi
+	echo "Kwork latency [Success]"
+}
+
+test_kwork_timehist() {
+	echo "Kwork timehist"
+	if ! perf kwork timehist -i "${perfdata}" | grep -q "Kwork name"; then
+		echo "Kwork timehist [Failed missing output]"
+		err=1
+	fi
+	echo "Kwork timehist [Success]"
+}
+
+test_kwork_top() {
+	echo "Kwork top"
+	if ! perf kwork top -i "${perfdata}" | grep -q "COMMAND"; then
+		echo "Kwork top [Failed missing output]"
+		err=1
+	fi
+	echo "Kwork top [Success]"
+}
+
+test_kwork_record
+test_kwork_report
+test_kwork_latency
+test_kwork_timehist
+test_kwork_top
+
+cleanup
+exit $err
-- 
2.52.0.223.gf5cc29aaa4-goog