[PATCH v4 2/2] perf test: Add perf trace summary test

From: Namhyung Kim
Date: Wed Mar 26 2025 - 00:40:17 EST


$ sudo ./perf test -vv 'trace summary'
109: perf trace summary:
--- start ---
test child forked, pid 3501572
testing: perf trace -s -- true
testing: perf trace -S -- true
testing: perf trace -s --summary-mode=thread -- true
testing: perf trace -S --summary-mode=total -- true
testing: perf trace -as --summary-mode=thread --no-bpf-summary -- true
testing: perf trace -as --summary-mode=total --no-bpf-summary -- true
testing: perf trace -as --summary-mode=thread --bpf-summary -- true
testing: perf trace -as --summary-mode=total --bpf-summary -- true
testing: perf trace -aS --summary-mode=total --bpf-summary -- true
---- end(0) ----
109: perf trace summary : Ok

Cc: Howard Chu <howardchu95@xxxxxxxxx>
Signed-off-by: Namhyung Kim <namhyung@xxxxxxxxxx>
---
tools/perf/tests/shell/trace_summary.sh | 65 +++++++++++++++++++++++++
1 file changed, 65 insertions(+)
create mode 100755 tools/perf/tests/shell/trace_summary.sh

diff --git a/tools/perf/tests/shell/trace_summary.sh b/tools/perf/tests/shell/trace_summary.sh
new file mode 100755
index 0000000000000000..4d98cb212dd9de0b
--- /dev/null
+++ b/tools/perf/tests/shell/trace_summary.sh
@@ -0,0 +1,65 @@
+#!/bin/sh
+# perf trace summary
+# SPDX-License-Identifier: GPL-2.0
+
+# Check that perf trace works with various summary mode
+
+# shellcheck source=lib/probe.sh
+. "$(dirname $0)"/lib/probe.sh
+
+skip_if_no_perf_trace || exit 2
+[ "$(id -u)" = 0 ] || exit 2
+
+OUTPUT=$(mktemp /tmp/perf_trace_test.XXXXX)
+
+test_perf_trace() {
+ args=$1
+ workload="true"
+ search="^\s*(open|read|close).*[0-9]+%$"
+
+ echo "testing: perf trace ${args} -- ${workload}"
+ perf trace ${args} -- ${workload} >${OUTPUT} 2>&1
+ if [ $? -ne 0 ]; then
+ echo "Error: perf trace ${args} failed unexpectedly"
+ cat ${OUTPUT}
+ rm -f ${OUTPUT}
+ exit 1
+ fi
+
+ count=$(grep -E -c -m 3 "${search}" ${OUTPUT})
+ if [ "${count}" != "3" ]; then
+ echo "Error: cannot find enough pattern ${search} in the output"
+ cat ${OUTPUT}
+ rm -f ${OUTPUT}
+ exit 1
+ fi
+}
+
+# summary only for a process
+test_perf_trace "-s"
+
+# normal output with summary at the end
+test_perf_trace "-S"
+
+# summary only with an explicit summary mode
+test_perf_trace "-s --summary-mode=thread"
+
+# summary with normal output - total summary mode
+test_perf_trace "-S --summary-mode=total"
+
+# summary only for system wide - per-thread summary
+test_perf_trace "-as --summary-mode=thread --no-bpf-summary"
+
+# summary only for system wide - total summary mode
+test_perf_trace "-as --summary-mode=total --no-bpf-summary"
+
+# summary only for system wide - per-thread summary with BPF
+test_perf_trace "-as --summary-mode=thread --bpf-summary"
+
+# summary only for system wide - total summary mode with BPF
+test_perf_trace "-as --summary-mode=total --bpf-summary"
+
+# summary with normal output for system wide - total summary mode with BPF
+test_perf_trace "-aS --summary-mode=total --bpf-summary"
+
+rm -f ${OUTPUT}
--
2.49.0.395.g12beb8f557-goog