Linux kernel mirror (for testing)
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linux
1#!/bin/bash
2# perf stat CSV output linter
3# SPDX-License-Identifier: (LGPL-2.1 OR BSD-2-Clause)
4# Tests various perf stat CSV output commands for the
5# correct number of fields and the CSV separator set to ','.
6
7set -e
8
9function commachecker()
10{
11 local -i cnt=0 exp=0
12
13 case "$1"
14 in "--no-args") exp=6
15 ;; "--system-wide") exp=6
16 ;; "--event") exp=6
17 ;; "--interval") exp=7
18 ;; "--per-thread") exp=7
19 ;; "--system-wide-no-aggr") exp=7
20 [ $(uname -m) = "s390x" ] && exp=6
21 ;; "--per-core") exp=8
22 ;; "--per-socket") exp=8
23 ;; "--per-node") exp=8
24 ;; "--per-die") exp=8
25 esac
26
27 while read line
28 do
29 # Check for lines beginning with Failed
30 x=${line:0:6}
31 [ "$x" = "Failed" ] && continue
32
33 # Count the number of commas
34 x=$(echo $line | tr -d -c ',')
35 cnt="${#x}"
36 # echo $line $cnt
37 [ "$cnt" -ne "$exp" ] && {
38 echo "wrong number of fields. expected $exp in $line" 1>&2
39 exit 1;
40 }
41 done
42 return 0
43}
44
45# Return true if perf_event_paranoid is > $1 and not running as root.
46function ParanoidAndNotRoot()
47{
48 [ $(id -u) != 0 ] && [ $(cat /proc/sys/kernel/perf_event_paranoid) -gt $1 ]
49}
50
51check_no_args()
52{
53 echo -n "Checking CSV output: no args "
54 perf stat -x, true 2>&1 | commachecker --no-args
55 echo "[Success]"
56}
57
58check_system_wide()
59{
60 echo -n "Checking CSV output: system wide "
61 if ParanoidAndNotRoot 0
62 then
63 echo "[Skip] paranoid and not root"
64 return
65 fi
66 perf stat -x, -a true 2>&1 | commachecker --system-wide
67 echo "[Success]"
68}
69
70check_system_wide_no_aggr()
71{
72 echo -n "Checking CSV output: system wide "
73 if ParanoidAndNotRoot 0
74 then
75 echo "[Skip] paranoid and not root"
76 return
77 fi
78 echo -n "Checking CSV output: system wide no aggregation "
79 perf stat -x, -A -a --no-merge true 2>&1 | commachecker --system-wide-no-aggr
80 echo "[Success]"
81}
82
83check_interval()
84{
85 echo -n "Checking CSV output: interval "
86 perf stat -x, -I 1000 true 2>&1 | commachecker --interval
87 echo "[Success]"
88}
89
90
91check_event()
92{
93 echo -n "Checking CSV output: event "
94 perf stat -x, -e cpu-clock true 2>&1 | commachecker --event
95 echo "[Success]"
96}
97
98check_per_core()
99{
100 echo -n "Checking CSV output: per core "
101 if ParanoidAndNotRoot 0
102 then
103 echo "[Skip] paranoid and not root"
104 return
105 fi
106 perf stat -x, --per-core -a true 2>&1 | commachecker --per-core
107 echo "[Success]"
108}
109
110check_per_thread()
111{
112 echo -n "Checking CSV output: per thread "
113 if ParanoidAndNotRoot 0
114 then
115 echo "[Skip] paranoid and not root"
116 return
117 fi
118 perf stat -x, --per-thread -a true 2>&1 | commachecker --per-thread
119 echo "[Success]"
120}
121
122check_per_die()
123{
124 echo -n "Checking CSV output: per die "
125 if ParanoidAndNotRoot 0
126 then
127 echo "[Skip] paranoid and not root"
128 return
129 fi
130 perf stat -x, --per-die -a true 2>&1 | commachecker --per-die
131 echo "[Success]"
132}
133
134check_per_node()
135{
136 echo -n "Checking CSV output: per node "
137 if ParanoidAndNotRoot 0
138 then
139 echo "[Skip] paranoid and not root"
140 return
141 fi
142 perf stat -x, --per-node -a true 2>&1 | commachecker --per-node
143 echo "[Success]"
144}
145
146check_per_socket()
147{
148 echo -n "Checking CSV output: per socket "
149 if ParanoidAndNotRoot 0
150 then
151 echo "[Skip] paranoid and not root"
152 return
153 fi
154 perf stat -x, --per-socket -a true 2>&1 | commachecker --per-socket
155 echo "[Success]"
156}
157
158check_no_args
159check_system_wide
160check_system_wide_no_aggr
161check_interval
162check_event
163check_per_core
164check_per_thread
165check_per_die
166check_per_node
167check_per_socket
168exit 0