2 # perf stat --bpf-counters test
3 # SPDX-License-Identifier: GPL-2.0
7 # check whether $2 is within +/- 10% of $1
13 # upper bound is first_num * 110%
14 upper=$(( $first_num + $first_num / 10 ))
15 # lower bound is first_num * 90%
16 lower=$(( $first_num - $first_num / 10 ))
18 if [ $second_num -gt $upper ] || [ $second_num -lt $lower ]; then
19 echo "The difference between $first_num and $second_num are greater than 10%."
24 # skip if --bpf-counters is not supported
25 perf stat --bpf-counters true > /dev/null 2>&1 || exit 2
27 base_cycles=$(perf stat --no-big-num -e cycles -- perf bench sched messaging -g 1 -l 100 -t 2>&1 | awk '/cycles/ {print $1}')
28 bpf_cycles=$(perf stat --no-big-num --bpf-counters -e cycles -- perf bench sched messaging -g 1 -l 100 -t 2>&1 | awk '/cycles/ {print $1}')
30 compare_number $base_cycles $bpf_cycles