75 lines · bash
1#!/bin/sh2# perf stat --bpf-counters test3# SPDX-License-Identifier: GPL-2.04 5set -e6 7workload="perf test -w brstack"8 9# check whether $2 is within +/- 20% of $110compare_number()11{12 first_num=$113 second_num=$214 15 # upper bound is first_num * 120%16 upper=$(expr $first_num + $first_num / 5 )17 # lower bound is first_num * 80%18 lower=$(expr $first_num - $first_num / 5 )19 20 if [ $second_num -gt $upper ] || [ $second_num -lt $lower ]; then21 echo "The difference between $first_num and $second_num are greater than 20%."22 exit 123 fi24}25 26check_counts()27{28 base_instructions=$129 bpf_instructions=$230 31 if [ "$base_instructions" = "<not" ]; then32 echo "Skipping: instructions event not counted"33 exit 234 fi35 if [ "$bpf_instructions" = "<not" ]; then36 echo "Failed: instructions not counted with --bpf-counters"37 exit 138 fi39}40 41test_bpf_counters()42{43 printf "Testing --bpf-counters "44 base_instructions=$(perf stat --no-big-num -e instructions -- $workload 2>&1 | awk '/instructions/ {print $1}')45 bpf_instructions=$(perf stat --no-big-num --bpf-counters -e instructions -- $workload 2>&1 | awk '/instructions/ {print $1}')46 check_counts $base_instructions $bpf_instructions47 compare_number $base_instructions $bpf_instructions48 echo "[Success]"49}50 51test_bpf_modifier()52{53 printf "Testing bpf event modifier "54 stat_output=$(perf stat --no-big-num -e instructions/name=base_instructions/,instructions/name=bpf_instructions/b -- $workload 2>&1)55 base_instructions=$(echo "$stat_output"| awk '/base_instructions/ {print $1}')56 bpf_instructions=$(echo "$stat_output"| awk '/bpf_instructions/ {print $1}')57 check_counts $base_instructions $bpf_instructions58 compare_number $base_instructions $bpf_instructions59 echo "[Success]"60}61 62# skip if --bpf-counters is not supported63if ! perf stat -e instructions --bpf-counters true > /dev/null 2>&1; then64 if [ "$1" = "-v" ]; then65 echo "Skipping: --bpf-counters not supported"66 perf --no-pager stat -e instructions --bpf-counters true || true67 fi68 exit 269fi70 71test_bpf_counters72test_bpf_modifier73 74exit 075