#!/bin/bash# perf stat CSV output linter# SPDX-License-Identifier: (LGPL-2.1 OR BSD-2-Clause)# Tests various perf stat CSV output commands for the# correct number of fields and the CSV separator set to ','. set -e # shellcheck source=lib/stat_output.sh. "$(dirname $0)"/lib/stat_output.sh csv_sep=@ stat_output=$(mktemp /tmp/__perf_test.stat_output.csv.XXXXX) cleanup() {  rm -f "${stat_output}"   trap - EXIT TERM INT} trap_cleanup() {  cleanup  exit 1}trap trap_cleanup EXIT TERM INT function commachecker(){	local -i cnt=0	local exp=0 	case "$1"	in "--no-args")		exp=6	;; "--system-wide")	exp=6	;; "--event")		exp=6	;; "--interval")	exp=7	;; "--per-thread")	exp=7	;; "--system-wide-no-aggr")	exp=7				[ "$(uname -m)" = "s390x" ] && exp='^[6-7]$'	;; "--per-core")	exp=8	;; "--per-socket")	exp=8	;; "--per-node")	exp=8	;; "--per-die")		exp=8	;; "--per-cluster")	exp=8	;; "--per-cache")	exp=8	;; "--metric-only")	exp=1	esac 	while read line	do		# Ignore initial "started on" comment.		x=${line:0:1}		[ "$x" = "#" ] && continue		# Ignore initial blank line.		[ "$line" = "" ] && continue 		# Count the number of commas		x=$(echo $line | tr -d -c $csv_sep)		cnt="${#x}"		# echo $line $cnt		[[ ! "$cnt" =~ $exp ]] && {			echo "wrong number of fields. expected $exp in $line" 1>&2			exit 1;		}	done < "${stat_output}"	return 0} perf_cmd="-x$csv_sep -o ${stat_output}" skip_test=$(check_for_topology)check_no_args "CSV" "$perf_cmd"check_system_wide "CSV" "$perf_cmd"check_interval "CSV" "$perf_cmd"check_event "CSV" "$perf_cmd"check_per_thread "CSV" "$perf_cmd"check_per_node "CSV" "$perf_cmd"check_metric_only "CSV" "$perf_cmd"if [ $skip_test -ne 1 ]then	check_system_wide_no_aggr "CSV" "$perf_cmd"	check_per_core "CSV" "$perf_cmd"	check_per_cache_instance "CSV" "$perf_cmd"	check_per_cluster "CSV" "$perf_cmd"	check_per_die "CSV" "$perf_cmd"	check_per_socket "CSV" "$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