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