4 # SPDX-License-Identifier: GPL-2.0
5 # Leo Yan <leo.yan@linaro.org>, 2022
7 skip_if_no_mem_event() {
8 perf mem record -e list 2>&1 | grep -E -q 'available' && return 0
12 skip_if_no_mem_event || exit 2
14 TEST_PROGRAM="perf test -w datasym"
15 PERF_DATA=$(mktemp /tmp/__perf_test.perf.data.XXXXX)
18 # The memory report format is as below:
19 # 99.92% ... [.] buf1+0x38
20 result=$(perf mem report -i ${PERF_DATA} -s symbol_daddr -q 2>&1 |
21 awk '/buf1/ { print $4 }')
23 # Testing is failed if has no any sample for "buf1"
24 [ -z "$result" ] && return 1
26 while IFS= read -r line; do
27 # The "data1" and "data2" fields in structure "buf1" have
28 # offset "0x0" and "0x38", returns failure if detect any
30 if [ "$line" != "buf1+0x0" ] && [ "$line" != "buf1+0x38" ]; then
40 echo "Cleaning up files..."
44 trap cleanup_files exit term int
46 echo "Recording workload..."
48 # perf mem/c2c internally uses IBS PMU on AMD CPU which doesn't support
49 # user/kernel filtering and per-process monitoring, spin program on
50 # specific CPU and test in per-CPU mode.
51 is_amd=$(grep -E -c 'vendor_id.*AuthenticAMD' /proc/cpuinfo)
52 if (($is_amd >= 1)); then
53 perf mem record -o ${PERF_DATA} -C 0 -- taskset -c 0 $TEST_PROGRAM &
55 perf mem record --all-user -o ${PERF_DATA} -- $TEST_PROGRAM &