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# 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" "cs/sec" "migrations/sec" "faults/sec" "frontend_cycles_idle" "backend_cycles_idle" "GHz" "insn_per_cycle" "/sec" "branch_miss_rate")
16skip_metric=("tma_" "TopdownL1")
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 local -i metric_only=0
34
35 case "$1"
36 in "--interval") prefix=2
37 ;; "--per-thread") prefix=2
38 ;; "--system-wide-no-aggr") prefix=2
39 ;; "--per-core") prefix=3
40 ;; "--per-socket") prefix=3
41 ;; "--per-node") prefix=3
42 ;; "--per-die") prefix=3
43 ;; "--per-cache") prefix=3
44 ;; "--per-cluster") prefix=3
45 ;; "--metric-only") metric_only=1
46 esac
47
48 while read line
49 do
50 # Ignore initial "started on" comment.
51 x=${line:0:1}
52 [ "$x" = "#" ] && continue
53 # Ignore initial blank line.
54 [ "$line" = "" ] && continue
55 # Ignore "Performance counter stats"
56 x=${line:0:25}
57 [ "$x" = "Performance counter stats" ] && continue
58 # Ignore "seconds time elapsed" and break
59 [[ "$line" == *"time elapsed"* ]] && break
60
61 main_body=$(echo $line | cut -d' ' -f$prefix-)
62 x=${main_body%#*}
63 [ "$x" = "" ] && continue
64
65 # Check metric only - if it has a non-empty result
66 [ $metric_only -eq 1 ] && return 0
67
68 # Skip metrics without event name
69 y=${main_body#*#}
70 for i in "${!skip_metric[@]}"; do
71 [[ "$y" == *"${skip_metric[$i]}"* ]] && break
72 done
73 [[ "$y" == *"${skip_metric[$i]}"* ]] && continue
74
75 # Check default event
76 for i in "${!event_name[@]}"; do
77 [[ "$x" == *"${event_name[$i]}"* ]] && break
78 done
79
80 [[ ! "$x" == *"${event_name[$i]}"* ]] && {
81 echo "Unknown event name in $line" 1>&2
82 exit 1;
83 }
84
85 # Check event metric if it exists
86 [[ ! "$main_body" == *"#"* ]] && continue
87 [[ ! "$main_body" == *"${event_metric[$i]}"* ]] && {
88 echo "wrong event metric. expected ${event_metric[$i]} in $line" 1>&2
89 exit 1;
90 }
91 done < "${stat_output}"
92
93 if [ $metric_only -ne 1 ]
94 then
95 echo "Missing metric only output in:"
96 cat "${stat_output}"
97 fi
98 return 0
99}
100
101perf_cmd="-o ${stat_output}"
102
103skip_test=$(check_for_topology)
104check_no_args "STD" "$perf_cmd"
105check_system_wide "STD" "$perf_cmd"
106check_interval "STD" "$perf_cmd"
107check_per_thread "STD" "$perf_cmd"
108check_per_node "STD" "$perf_cmd"
109check_metric_only "STD" "$perf_cmd"
110if [ $skip_test -ne 1 ]
111then
112 check_system_wide_no_aggr "STD" "$perf_cmd"
113 check_per_core "STD" "$perf_cmd"
114 check_per_cache_instance "STD" "$perf_cmd"
115 check_per_cluster "STD" "$perf_cmd"
116 check_per_die "STD" "$perf_cmd"
117 check_per_socket "STD" "$perf_cmd"
118else
119 echo "[Skip] Skipping tests for system_wide_no_aggr, per_core, per_die and per_socket since socket id exposed via topology is invalid"
120fi
121cleanup
122exit 0