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#!/bin/bash
# perf stat STD output linter
# SPDX-License-Identifier: GPL-2.0
# Tests various perf stat STD output commands for
# default event and metricgroup
set -e
# shellcheck source=lib/stat_output.sh
. "$(dirname $0)"/lib/stat_output.sh
stat_output=$(mktemp /tmp/__perf_test.stat_output.std.XXXXX)
event_name=(cpu-clock task-clock context-switches cpu-migrations page-faults stalled-cycles-frontend stalled-cycles-backend cycles instructions branches branch-misses)
event_metric=("CPUs utilized" "CPUs utilized" "/sec" "/sec" "/sec" "frontend cycles idle" "backend cycles idle" "GHz" "insn per cycle" "/sec" "of all branches")
skip_metric=("stalled cycles per insn" "tma_" "retiring" "frontend_bound" "bad_speculation" "backend_bound")
cleanup() {
rm -f "${stat_output}"
trap - EXIT TERM INT
}
trap_cleanup() {
cleanup
exit 1
}
trap trap_cleanup EXIT TERM INT
function commachecker()
{
local prefix=1
case "$1"
in "--interval") prefix=2
;; "--per-thread") prefix=2
;; "--system-wide-no-aggr") prefix=2
;; "--per-core") prefix=3
;; "--per-socket") prefix=3
;; "--per-node") prefix=3
;; "--per-die") prefix=3
;; "--per-cache") prefix=3
;; "--per-cluster") prefix=3
esac
while read line
do
# Ignore initial "started on" comment.
x=${line:0:1}
[ "$x" = "#" ] && continue
# Ignore initial blank line.
[ "$line" = "" ] && continue
# Ignore "Performance counter stats"
x=${line:0:25}
[ "$x" = "Performance counter stats" ] && continue
# Ignore "seconds time elapsed" and break
[[ "$line" == *"time elapsed"* ]] && break
main_body=$(echo $line | cut -d' ' -f$prefix-)
x=${main_body%#*}
[ "$x" = "" ] && continue
# Skip metrics without event name
y=${main_body#*#}
for i in "${!skip_metric[@]}"; do
[[ "$y" == *"${skip_metric[$i]}"* ]] && break
done
[[ "$y" == *"${skip_metric[$i]}"* ]] && continue
# Check default event
for i in "${!event_name[@]}"; do
[[ "$x" == *"${event_name[$i]}"* ]] && break
done
[[ ! "$x" == *"${event_name[$i]}"* ]] && {
echo "Unknown event name in $line" 1>&2
exit 1;
}
# Check event metric if it exists
[[ ! "$main_body" == *"#"* ]] && continue
[[ ! "$main_body" == *"${event_metric[$i]}"* ]] && {
echo "wrong event metric. expected ${event_metric[$i]} in $line" 1>&2
exit 1;
}
done < "${stat_output}"
return 0
}
perf_cmd="-o ${stat_output}"
skip_test=$(check_for_topology)
check_no_args "STD" "$perf_cmd"
check_system_wide "STD" "$perf_cmd"
check_interval "STD" "$perf_cmd"
check_per_thread "STD" "$perf_cmd"
check_per_node "STD" "$perf_cmd"
if [ $skip_test -ne 1 ]
then
check_system_wide_no_aggr "STD" "$perf_cmd"
check_per_core "STD" "$perf_cmd"
check_per_cache_instance "STD" "$perf_cmd"
check_per_cluster "STD" "$perf_cmd"
check_per_die "STD" "$perf_cmd"
check_per_socket "STD" "$perf_cmd"
else
echo "[Skip] Skipping tests for system_wide_no_aggr, per_core, per_die and per_socket since socket id exposed via topology is invalid"
fi
cleanup
exit 0
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