46 lines
1.3 KiB
Bash
Executable File
46 lines
1.3 KiB
Bash
Executable File
#!/bin/sh
|
|
# perf stat --bpf-counters test
|
|
# SPDX-License-Identifier: GPL-2.0
|
|
|
|
set -e
|
|
|
|
# check whether $2 is within +/- 10% of $1
|
|
compare_number()
|
|
{
|
|
first_num=$1
|
|
second_num=$2
|
|
|
|
# upper bound is first_num * 110%
|
|
upper=$(expr $first_num + $first_num / 10 )
|
|
# lower bound is first_num * 90%
|
|
lower=$(expr $first_num - $first_num / 10 )
|
|
|
|
if [ $second_num -gt $upper ] || [ $second_num -lt $lower ]; then
|
|
echo "The difference between $first_num and $second_num are greater than 10%."
|
|
exit 1
|
|
fi
|
|
}
|
|
|
|
# skip if --bpf-counters is not supported
|
|
if ! perf stat -e cycles --bpf-counters true > /dev/null 2>&1; then
|
|
if [ "$1" = "-v" ]; then
|
|
echo "Skipping: --bpf-counters not supported"
|
|
perf --no-pager stat -e cycles --bpf-counters true || true
|
|
fi
|
|
exit 2
|
|
fi
|
|
|
|
base_cycles=$(perf stat --no-big-num -e cycles -- perf bench sched messaging -g 1 -l 100 -t 2>&1 | awk '/cycles/ {print $1}')
|
|
if [ "$base_cycles" == "<not" ]; then
|
|
echo "Skipping: cycles event not counted"
|
|
exit 2
|
|
fi
|
|
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 $1}')
|
|
if [ "$bpf_cycles" == "<not" ]; then
|
|
echo "Failed: cycles not counted with --bpf-counters"
|
|
exit 1
|
|
fi
|
|
|
|
compare_number $base_cycles $bpf_cycles
|
|
exit 0
|