1 #!/bin/bash
2 # SPDX-License-Identifier: GPL-2.0
3
4 # Return true if perf_event_paranoid is > $1 and not running as root.
5 function ParanoidAndNotRoot()
6 {
7 [ "$(id -u)" != 0 ] && [ "$(cat /proc/sys/kernel/perf_event_paranoid)" -gt $1 ]
8 }
9
10 # $1 name $2 extra_opt
11 check_no_args()
12 {
13 echo -n "Checking $1 output: no args "
14 perf stat $2 true
15 commachecker --no-args
16 echo "[Success]"
17 }
18
19 check_system_wide()
20 {
21 echo -n "Checking $1 output: system wide "
22 if ParanoidAndNotRoot 0
23 then
24 echo "[Skip] paranoid and not root"
25 return
26 fi
27 perf stat -a $2 true
28 commachecker --system-wide
29 echo "[Success]"
30 }
31
32 check_system_wide_no_aggr()
33 {
34 echo -n "Checking $1 output: system wide no aggregation "
35 if ParanoidAndNotRoot 0
36 then
37 echo "[Skip] paranoid and not root"
38 return
39 fi
40 perf stat -A -a --no-merge $2 true
41 commachecker --system-wide-no-aggr
42 echo "[Success]"
43 }
44
45 check_interval()
46 {
47 echo -n "Checking $1 output: interval "
48 perf stat -I 1000 $2 true
49 commachecker --interval
50 echo "[Success]"
51 }
52
53 check_event()
54 {
55 echo -n "Checking $1 output: event "
56 perf stat -e cpu-clock $2 true
57 commachecker --event
58 echo "[Success]"
59 }
60
61 check_per_core()
62 {
63 echo -n "Checking $1 output: per core "
64 if ParanoidAndNotRoot 0
65 then
66 echo "[Skip] paranoid and not root"
67 return
68 fi
69 perf stat --per-core -a $2 true
70 commachecker --per-core
71 echo "[Success]"
72 }
73
74 check_per_thread()
75 {
76 echo -n "Checking $1 output: per thread "
77 if ParanoidAndNotRoot 0
78 then
79 echo "[Skip] paranoid and not root"
80 return
81 fi
82 perf stat --per-thread -p $$ $2 true
83 commachecker --per-thread
84 echo "[Success]"
85 }
86
87 check_per_cache_instance()
88 {
89 echo -n "Checking $1 output: per cache instance "
90 if ParanoidAndNotRoot 0
91 then
92 echo "[Skip] paranoid and not root"
93 return
94 fi
95 perf stat --per-cache -a $2 true
96 commachecker --per-cache
97 echo "[Success]"
98 }
99
100 check_per_cluster()
101 {
102 echo -n "Checking $1 output: per cluster "
103 if ParanoidAndNotRoot 0
104 then
105 echo "[Skip] paranoid and not root"
106 return
107 fi
108 perf stat --per-cluster -a $2 true
109 echo "[Success]"
110 }
111
112 check_per_die()
113 {
114 echo -n "Checking $1 output: per die "
115 if ParanoidAndNotRoot 0
116 then
117 echo "[Skip] paranoid and not root"
118 return
119 fi
120 perf stat --per-die -a $2 true
121 commachecker --per-die
122 echo "[Success]"
123 }
124
125 check_per_node()
126 {
127 echo -n "Checking $1 output: per node "
128 if ParanoidAndNotRoot 0
129 then
130 echo "[Skip] paranoid and not root"
131 return
132 fi
133 perf stat --per-node -a $2 true
134 commachecker --per-node
135 echo "[Success]"
136 }
137
138 check_per_socket()
139 {
140 echo -n "Checking $1 output: per socket "
141 if ParanoidAndNotRoot 0
142 then
143 echo "[Skip] paranoid and not root"
144 return
145 fi
146 perf stat --per-socket -a $2 true
147 commachecker --per-socket
148 echo "[Success]"
149 }
150
151 # The perf stat options for per-socket, per-core, per-die
152 # and -A ( no_aggr mode ) uses the info fetched from this
153 # directory: "/sys/devices/system/cpu/cpu*/topology". For
154 # example, socket value is fetched from "physical_package_id"
155 # file in topology directory.
156 # Reference: cpu__get_topology_int in util/cpumap.c
157 # If the platform doesn't expose topology information, values
158 # will be set to -1. For example, incase of pSeries platform
159 # of powerpc, value for "physical_package_id" is restricted
160 # and set to -1. Check here validates the socket-id read from
161 # topology file before proceeding further
162
163 FILE_LOC="/sys/devices/system/cpu/cpu*/topology/"
164 FILE_NAME="physical_package_id"
165
166 function check_for_topology()
167 {
168 if ! ParanoidAndNotRoot 0
169 then
170 socket_file=`ls $FILE_LOC/$FILE_NAME | head -n 1`
171 [ -z $socket_file ] && {
172 echo 0
173 return
174 }
175 socket_id=`cat $socket_file`
176 [ $socket_id == -1 ] && {
177 echo 1
178 return
179 }
180 fi
181 echo 0
182 }
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.