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