From: Namhyung Kim <namhyung@kernel.org>
Date: Tue, 4 Mar 2025 02:28:35 +0000 (-0800)
Subject: perf test: Add trace record and replay test
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=15bcfb96d0ddbc1b131274ad0ec6b1fe9cc8f79a;p=users%2Fjedix%2Flinux-maple.git

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

Tested-by: Thomas Falcon <thomas.falcon@intel.com>
Cc: Howard Chu <howardchu95@gmail.com>
Link: https://lore.kernel.org/r/20250304022837.1877845-5-namhyung@kernel.org
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
---

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 0000000000000..6b4ed863c1ef8
--- /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}