From: Ian Rogers <irogers@google.com>
Date: Sat, 22 Nov 2025 08:19:22 +0000 (-0800)
Subject: perf tests c2c: Add a basic c2c
X-Git-Tag: v6.19-rc1~61^2~15
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ac881007c4bf7be4dae713c36b7f0309f2843611;p=thirdparty%2Fkernel%2Flinux.git

perf tests c2c: Add a basic c2c

Add basic c2c record and report testing to gain some coverage.

Signed-off-by: Ian Rogers <irogers@google.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
---

diff --git a/tools/perf/tests/shell/c2c.sh b/tools/perf/tests/shell/c2c.sh
new file mode 100755
index 0000000000000..2471d44595c35
--- /dev/null
+++ b/tools/perf/tests/shell/c2c.sh
@@ -0,0 +1,62 @@
+#!/bin/bash
+# perf c2c tests
+# SPDX-License-Identifier: GPL-2.0
+
+set -e
+
+err=0
+perfdata=$(mktemp /tmp/__perf_c2c_test.perf.data.XXXXX)
+
+cleanup() {
+	rm -f "${perfdata}"
+	rm -f "${perfdata}".old
+	trap - EXIT TERM INT
+}
+
+trap_cleanup() {
+	echo "Unexpected signal in ${FUNCNAME[1]}"
+	cleanup
+	exit 1
+}
+trap trap_cleanup EXIT TERM INT
+
+check_c2c_support() {
+	# Check if perf c2c record works.
+	if ! perf c2c record -o "${perfdata}" -- true > /dev/null 2>&1 ; then
+		return 1
+	fi
+	return 0
+}
+
+test_c2c_record_report() {
+	echo "c2c record and report test"
+	if ! check_c2c_support ; then
+		echo "c2c record and report test [Skipped: perf c2c record failed (possibly missing hardware support)]"
+		err=2
+		return
+	fi
+
+	# Run a workload that does some memory operations.
+	if ! perf c2c record -o "${perfdata}" -- perf test -w datasym 1 > /dev/null 2>&1 ; then
+		echo "c2c record and report test [Skipped: perf c2c record failed during workload]"
+		return
+	fi
+
+	if ! perf c2c report -i "${perfdata}" --stdio > /dev/null 2>&1 ; then
+		echo "c2c record and report test [Failed: report failed]"
+		err=1
+		return
+	fi
+
+	if ! perf c2c report -i "${perfdata}" -N > /dev/null 2>&1 ; then
+		echo "c2c record and report test [Failed: report -N failed]"
+		err=1
+		return
+	fi
+
+	echo "c2c record and report test [Success]"
+}
+
+test_c2c_record_report
+cleanup
+exit $err