#!/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" "cs/sec" "migrations/sec" "faults/sec" "frontend_cycles_idle" "backend_cycles_idle" "GHz" "insn_per_cycle" "/sec" "branch_miss_rate")skip_metric=("tma_" "TopdownL1") 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	local -i metric_only=0 	case "$1"	in "--interval")	prefix=2	;; "--per-thread")	prefix=2	;; "--system-wide-no-aggr")	prefix=2	;; "--per-core")	prefix=3	;; "--per-socket")	prefix=3	;; "--per-node")	prefix=3	;; "--per-die")		prefix=3	;; "--per-cache")	prefix=3	;; "--per-cluster")	prefix=3	;; "--metric-only")	metric_only=1	esac 	while read line	do		# Ignore initial "started on" comment.		x=${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 		# Check metric only - if it has a non-empty result		[ $metric_only -eq 1 ] && return 0 		# Skip metrics without event name		y=${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}" 	if [ $metric_only -ne 1 ]	then		echo "Missing metric only output in:"		cat "${stat_output}"	fi	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" "$perf_cmd"check_metric_only "STD" "$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"ficleanupexit 0