linux-kernel - [PATCH 4/4] perf test: Add trace record and replay test

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Message-ID: <20250301040252.1586750-5-namhyung@kernel.org>
Date: Fri, 28 Feb 2025 20:02:52 -0800
From: Namhyung Kim <namhyung@...nel.org>
To: Arnaldo Carvalho de Melo <acme@...nel.org>,
	Ian Rogers <irogers@...gle.com>,
	Kan Liang <kan.liang@...ux.intel.com>
Cc: Jiri Olsa <jolsa@...nel.org>,
	Adrian Hunter <adrian.hunter@...el.com>,
	Peter Zijlstra <peterz@...radead.org>,
	Ingo Molnar <mingo@...nel.org>,
	LKML <linux-kernel@...r.kernel.org>,
	linux-perf-users@...r.kernel.org
Subject: [PATCH 4/4] perf test: Add trace record and replay test

It just check trace record and replay could display correct output.
It uses 'sleep' process and sees there's a clock_nanosleep syscall.

  $ sudo perf test -vv replay
  108: perf trace record and replay:
  --- start ---
  test child forked, pid 1563219
  [ perf record: Woken up 1 times to write data ]
  [ perf record: Captured and wrote 0.077 MB /tmp/temporary_file.w1ApA (242 samples) ]
       0.686 (1000.068 ms): sleep/1563226 clock_nanosleep(rqtp: 0x7ffc20ffee10, rmtp: 0x7ffc20ffee50)           = 0
  ---- end(0) ----
  108: perf trace record and replay                                    : Ok

Signed-off-by: Namhyung Kim <namhyung@...nel.org>
---
 tools/perf/tests/shell/trace_record_replay.sh | 21 +++++++++++++++++++
 1 file changed, 21 insertions(+)
 create mode 100755 tools/perf/tests/shell/trace_record_replay.sh

diff --git a/tools/perf/tests/shell/trace_record_replay.sh b/tools/perf/tests/shell/trace_record_replay.sh
new file mode 100755
index 0000000000000000..f948a84072b7a9b1
--- /dev/null
+++ b/tools/perf/tests/shell/trace_record_replay.sh
@@ -0,0 +1,21 @@
+#!/bin/sh
+# perf trace record and replay
+# SPDX-License-Identifier: GPL-2.0
+
+# Check that perf trace works with record and replay
+
+# shellcheck source=lib/probe.sh
+. "$(dirname $0)"/lib/probe.sh
+
+skip_if_no_perf_trace || exit 2
+[ "$(id -u)" == 0 ] || exit 2
+
+file=$(mktemp /tmp/temporary_file.XXXXX)
+
+perf trace record -o ${file} sleep 1 || exit 1
+if ! perf trace -i ${file} 2>&1 | grep nanosleep; then
+	echo "Failed: cannot find *nanosleep syscall"
+	exit 1
+fi
+
+rm -f ${file}
-- 
2.48.1.711.g2feabab25a-goog