114 lines
2.9 KiB
Bash
Executable File
114 lines
2.9 KiB
Bash
Executable File
#!/bin/sh
|
|
# Check Arm SPE trace data recording and synthesized samples
|
|
|
|
# Uses the 'perf record' to record trace data of Arm SPE events;
|
|
# then verify if any SPE event samples are generated by SPE with
|
|
# 'perf script' and 'perf report' commands.
|
|
|
|
# SPDX-License-Identifier: GPL-2.0
|
|
# German Gomez <german.gomez@arm.com>, 2021
|
|
|
|
skip_if_no_arm_spe_event() {
|
|
perf list | egrep -q 'arm_spe_[0-9]+//' && return 0
|
|
|
|
# arm_spe event doesn't exist
|
|
return 2
|
|
}
|
|
|
|
skip_if_no_arm_spe_event || exit 2
|
|
|
|
perfdata=$(mktemp /tmp/__perf_test.perf.data.XXXXX)
|
|
glb_err=0
|
|
|
|
cleanup_files()
|
|
{
|
|
rm -f ${perfdata}
|
|
rm -f ${perfdata}.old
|
|
exit $glb_err
|
|
}
|
|
|
|
trap cleanup_files exit term int
|
|
|
|
arm_spe_report() {
|
|
if [ $2 = 0 ]; then
|
|
echo "$1: PASS"
|
|
elif [ $2 = 2 ]; then
|
|
echo "$1: SKIPPED"
|
|
else
|
|
echo "$1: FAIL"
|
|
glb_err=$2
|
|
fi
|
|
}
|
|
|
|
perf_script_samples() {
|
|
echo "Looking at perf.data file for dumping samples:"
|
|
|
|
# from arm-spe.c/arm_spe_synth_events()
|
|
events="(ld1-miss|ld1-access|llc-miss|lld-access|tlb-miss|tlb-access|branch-miss|remote-access|memory)"
|
|
|
|
# Below is an example of the samples dumping:
|
|
# dd 3048 [002] 1 l1d-access: ffffaa64999c __GI___libc_write+0x3c (/lib/aarch64-linux-gnu/libc-2.27.so)
|
|
# dd 3048 [002] 1 tlb-access: ffffaa64999c __GI___libc_write+0x3c (/lib/aarch64-linux-gnu/libc-2.27.so)
|
|
# dd 3048 [002] 1 memory: ffffaa64999c __GI___libc_write+0x3c (/lib/aarch64-linux-gnu/libc-2.27.so)
|
|
perf script -F,-time -i ${perfdata} 2>&1 | \
|
|
egrep " +$1 +[0-9]+ .* +${events}:(.*:)? +" > /dev/null 2>&1
|
|
}
|
|
|
|
perf_report_samples() {
|
|
echo "Looking at perf.data file for reporting samples:"
|
|
|
|
# Below is an example of the samples reporting:
|
|
# 73.04% 73.04% dd libc-2.27.so [.] _dl_addr
|
|
# 7.71% 7.71% dd libc-2.27.so [.] getenv
|
|
# 2.59% 2.59% dd ld-2.27.so [.] strcmp
|
|
perf report --stdio -i ${perfdata} 2>&1 | \
|
|
egrep " +[0-9]+\.[0-9]+% +[0-9]+\.[0-9]+% +$1 " > /dev/null 2>&1
|
|
}
|
|
|
|
arm_spe_snapshot_test() {
|
|
echo "Recording trace with snapshot mode $perfdata"
|
|
perf record -o ${perfdata} -e arm_spe// -S \
|
|
-- dd if=/dev/zero of=/dev/null > /dev/null 2>&1 &
|
|
PERFPID=$!
|
|
|
|
# Wait for perf program
|
|
sleep 1
|
|
|
|
# Send signal to snapshot trace data
|
|
kill -USR2 $PERFPID
|
|
|
|
# Stop perf program
|
|
kill $PERFPID
|
|
wait $PERFPID
|
|
|
|
perf_script_samples dd &&
|
|
perf_report_samples dd
|
|
|
|
err=$?
|
|
arm_spe_report "SPE snapshot testing" $err
|
|
}
|
|
|
|
arm_spe_system_wide_test() {
|
|
echo "Recording trace with system-wide mode $perfdata"
|
|
|
|
perf record -o - -e dummy -a -B true > /dev/null 2>&1
|
|
if [ $? != 0 ]; then
|
|
arm_spe_report "SPE system-wide testing" 2
|
|
return
|
|
fi
|
|
|
|
perf record -o ${perfdata} -e arm_spe// -a --no-bpf-event \
|
|
-- dd if=/dev/zero of=/dev/null count=100000 > /dev/null 2>&1
|
|
|
|
perf_script_samples dd &&
|
|
perf_report_samples dd
|
|
|
|
err=$?
|
|
arm_spe_report "SPE system-wide testing" $err
|
|
}
|
|
|
|
arm_spe_snapshot_test
|
|
arm_spe_system_wide_test
|
|
|
|
exit $glb_err
|