1#!/bin/bash 2# perf stat STD output linter 3# SPDX-License-Identifier: GPL-2.0 4# Tests various perf stat STD output commands for 5# default event and metricgroup 6 7set -e 8 9# shellcheck source=lib/stat_output.sh 10. "$(dirname $0)"/lib/stat_output.sh 11 12stat_output=$(mktemp /tmp/__perf_test.stat_output.std.XXXXX) 13 14event_name=(cpu-clock task-clock context-switches cpu-migrations page-faults stalled-cycles-frontend stalled-cycles-backend cycles instructions branches branch-misses) 15event_metric=("CPUs utilized" "CPUs utilized" "/sec" "/sec" "/sec" "frontend cycles idle" "backend cycles idle" "GHz" "insn per cycle" "/sec" "of all branches") 16skip_metric=("stalled cycles per insn" "tma_") 17 18cleanup() { 19 rm -f "${stat_output}" 20 21 trap - EXIT TERM INT 22} 23 24trap_cleanup() { 25 cleanup 26 exit 1 27} 28trap trap_cleanup EXIT TERM INT 29 30function commachecker() 31{ 32 local prefix=1 33 34 case "$1" 35 in "--interval") prefix=2 36 ;; "--per-thread") prefix=2 37 ;; "--system-wide-no-aggr") prefix=2 38 ;; "--per-core") prefix=3 39 ;; "--per-socket") prefix=3 40 ;; "--per-node") prefix=3 41 ;; "--per-die") prefix=3 42 ;; "--per-cache") prefix=3 43 esac 44 45 while read line 46 do 47 # Ignore initial "started on" comment. 48 x=${line:0:1} 49 [ "$x" = "#" ] && continue 50 # Ignore initial blank line. 51 [ "$line" = "" ] && continue 52 # Ignore "Performance counter stats" 53 x=${line:0:25} 54 [ "$x" = "Performance counter stats" ] && continue 55 # Ignore "seconds time elapsed" and break 56 [[ "$line" == *"time elapsed"* ]] && break 57 58 main_body=$(echo $line | cut -d' ' -f$prefix-) 59 x=${main_body%#*} 60 [ "$x" = "" ] && continue 61 62 # Skip metrics without event name 63 y=${main_body#*#} 64 for i in "${!skip_metric[@]}"; do 65 [[ "$y" == *"${skip_metric[$i]}"* ]] && break 66 done 67 [[ "$y" == *"${skip_metric[$i]}"* ]] && continue 68 69 # Check default event 70 for i in "${!event_name[@]}"; do 71 [[ "$x" == *"${event_name[$i]}"* ]] && break 72 done 73 74 [[ ! "$x" == *"${event_name[$i]}"* ]] && { 75 echo "Unknown event name in $line" 1>&2 76 exit 1; 77 } 78 79 # Check event metric if it exists 80 [[ ! "$main_body" == *"#"* ]] && continue 81 [[ ! "$main_body" == *"${event_metric[$i]}"* ]] && { 82 echo "wrong event metric. expected ${event_metric[$i]} in $line" 1>&2 83 exit 1; 84 } 85 done < "${stat_output}" 86 return 0 87} 88 89perf_cmd="-o ${stat_output}" 90 91skip_test=$(check_for_topology) 92check_no_args "STD" "$perf_cmd" 93check_system_wide "STD" "$perf_cmd" 94check_interval "STD" "$perf_cmd" 95check_per_thread "STD" "$perf_cmd" 96check_per_node "STD" "$perf_cmd" 97if [ $skip_test -ne 1 ] 98then 99 check_system_wide_no_aggr "STD" "$perf_cmd" 100 check_per_core "STD" "$perf_cmd" 101 check_per_cache_instance "STD" "$perf_cmd" 102 check_per_die "STD" "$perf_cmd" 103 check_per_socket "STD" "$perf_cmd" 104else 105 echo "[Skip] Skipping tests for system_wide_no_aggr, per_core, per_die and per_socket since socket id exposed via topology is invalid" 106fi 107cleanup 108exit 0 109