1 files changed, 91 insertions, 0 deletions
diff --git a/tools/perf/tests/shell/test_data_symbol.sh b/tools/perf/tests/shell/test_data_symbol.sh
new file mode 100755
index 000000000000..d61b5659a46d
--- /dev/null
+++ b/tools/perf/tests/shell/test_data_symbol.sh
@@ -0,0 +1,91 @@
+#!/bin/bash
+# Test data symbol (exclusive)
+
+# SPDX-License-Identifier: GPL-2.0
+# Leo Yan <leo.yan@linaro.org>, 2022
+
+shelldir=$(dirname "$0")
+
+# shellcheck source=lib/perf_has_symbol.sh
+. "${shelldir}"/lib/perf_has_symbol.sh
+
+skip_if_no_mem_event() {
+	perf mem record -e list 2>&1 | grep -E -q 'available' && return 0
+	return 2
+}
+
+skip_if_no_mem_event || exit 2
+
+skip_test_missing_symbol workload_datasym_buf1
+
+TEST_PROGRAM="perf test -w datasym"
+PERF_DATA=$(mktemp /tmp/__perf_test.perf.data.XXXXX)
+ERR_FILE=$(mktemp /tmp/__perf_test.stderr.XXXXX)
+
+check_result() {
+	# The memory report format is as below:
+	#    99.92%  ...  [.] workload_datasym_buf1+0x38
+	result=$(perf mem report -i ${PERF_DATA} -s symbol_daddr -q 2>&1 |
+		 awk '/workload_datasym_buf1/ { print $4 }')
+
+	# Testing is failed if has no any sample for "workload_datasym_buf1"
+	[ -z "$result" ] && return 1
+
+	while IFS= read -r line; do
+		# The "data1" and "data2" fields in structure
+		# "workload_datasym_buf1" have offset "0x0" and "0x38", returns
+		# failure if detect any other offset value.
+		if [ "$line" != "workload_datasym_buf1+0x0" ] && \
+		   [ "$line" != "workload_datasym_buf1+0x38" ]; then
+			return 1
+		fi
+	done <<< "$result"
+
+	return 0
+}
+
+cleanup_files()
+{
+	echo "Cleaning up files..."
+	rm -f ${PERF_DATA}
+}
+
+trap cleanup_files exit term int
+
+echo "Recording workload..."
+
+is_amd=$(grep -E -c 'vendor_id.*AuthenticAMD' /proc/cpuinfo)
+if (($is_amd >= 1)); then
+	mem_events="$(perf mem record -v -e list 2>&1)"
+	if ! [[ "$mem_events" =~ ^mem\-ldst.*ibs_op/(.*)/.*available ]]; then
+		echo "ERROR: mem-ldst event is not matching"
+		exit 1
+	fi
+
+	# --ldlat on AMD:
+	# o Zen4 and earlier uarch does not support ldlat
+	# o Even on supported platforms, it's disabled (--ldlat=0) by default.
+	ldlat=${BASH_REMATCH[1]}
+	if [[ -n $ldlat ]]; then
+		if ! [[ "$ldlat" =~ ldlat=0 ]]; then
+			echo "ERROR: ldlat not initialized to 0?"
+			exit 1
+		fi
+
+		mem_events="$(perf mem record -v --ldlat=150 -e list 2>&1)"
+		if ! [[ "$mem_events" =~ ^mem-ldst.*ibs_op/ldlat=150/.*available ]]; then
+			echo "ERROR: --ldlat not honored?"
+			exit 1
+		fi
+	fi
+
+	# perf mem/c2c internally uses IBS PMU on AMD CPU which doesn't
+	# support user/kernel filtering and per-process monitoring on older
+	# kernels, spin program on specific CPU and test in per-CPU mode.
+	perf mem record -vvv -o ${PERF_DATA} -C 0 -- taskset -c 0 $TEST_PROGRAM 2>"${ERR_FILE}"
+else
+	perf mem record -vvv --all-user -o ${PERF_DATA} -- $TEST_PROGRAM 2>"${ERR_FILE}"
+fi
+
+check_result
+exit $?