1 #!/bin/sh
2 # perf stat tests
3 # SPDX-License-Identifier: GPL-2.0
4
5 set -e
6
7 err=0
8 test_default_stat() {
9 echo "Basic stat command test"
10 if ! perf stat true 2>&1 | grep -E -q "Performance counter stats for 'true':"
11 then
12 echo "Basic stat command test [Failed]"
13 err=1
14 return
15 fi
16 echo "Basic stat command test [Success]"
17 }
18
19 test_stat_record_report() {
20 echo "stat record and report test"
21 if ! perf stat record -o - true | perf stat report -i - 2>&1 | \
22 grep -E -q "Performance counter stats for 'pipe':"
23 then
24 echo "stat record and report test [Failed]"
25 err=1
26 return
27 fi
28 echo "stat record and report test [Success]"
29 }
30
31 test_stat_record_script() {
32 echo "stat record and script test"
33 if ! perf stat record -o - true | perf script -i - 2>&1 | \
34 grep -E -q "CPU[[:space:]]+THREAD[[:space:]]+VAL[[:space:]]+ENA[[:space:]]+RUN[[:space:]]+TIME[[:space:]]+EVENT"
35 then
36 echo "stat record and script test [Failed]"
37 err=1
38 return
39 fi
40 echo "stat record and script test [Success]"
41 }
42
43 test_stat_repeat_weak_groups() {
44 echo "stat repeat weak groups test"
45 if ! perf stat -e '{cycles,cycles,cycles,cycles,cycles,cycles,cycles,cycles,cycles,cycles}' \
46 true 2>&1 | grep -q 'seconds time elapsed'
47 then
48 echo "stat repeat weak groups test [Skipped event parsing failed]"
49 return
50 fi
51 if ! perf stat -r2 -e '{cycles,cycles,cycles,cycles,cycles,cycles,cycles,cycles,cycles,cycles}:W' \
52 true > /dev/null 2>&1
53 then
54 echo "stat repeat weak groups test [Failed]"
55 err=1
56 return
57 fi
58 echo "stat repeat weak groups test [Success]"
59 }
60
61 test_topdown_groups() {
62 # Topdown events must be grouped with the slots event first. Test that
63 # parse-events reorders this.
64 echo "Topdown event group test"
65 if ! perf stat -e '{slots,topdown-retiring}' true > /dev/null 2>&1
66 then
67 echo "Topdown event group test [Skipped event parsing failed]"
68 return
69 fi
70 if perf stat -e '{slots,topdown-retiring}' true 2>&1 | grep -E -q "<not supported>"
71 then
72 echo "Topdown event group test [Failed events not supported]"
73 err=1
74 return
75 fi
76 if perf stat -e '{topdown-retiring,slots}' true 2>&1 | grep -E -q "<not supported>"
77 then
78 echo "Topdown event group test [Failed slots not reordered first]"
79 err=1
80 return
81 fi
82 echo "Topdown event group test [Success]"
83 }
84
85 test_topdown_weak_groups() {
86 # Weak groups break if the perf_event_open of multiple grouped events
87 # fails. Breaking a topdown group causes the events to fail. Test a very large
88 # grouping to see that the topdown events aren't broken out.
89 echo "Topdown weak groups test"
90 ok_grouping="{slots,topdown-bad-spec,topdown-be-bound,topdown-fe-bound,topdown-retiring},branch-instructions,branch-misses,bus-cycles,cache-misses,cache-references,cpu-cycles,instructions,mem-loads,mem-stores,ref-cycles,cache-misses,cache-references"
91 if ! perf stat --no-merge -e "$ok_grouping" true > /dev/null 2>&1
92 then
93 echo "Topdown weak groups test [Skipped event parsing failed]"
94 return
95 fi
96 group_needs_break="{slots,topdown-bad-spec,topdown-be-bound,topdown-fe-bound,topdown-retiring,branch-instructions,branch-misses,bus-cycles,cache-misses,cache-references,cpu-cycles,instructions,mem-loads,mem-stores,ref-cycles,cache-misses,cache-references}:W"
97 if perf stat --no-merge -e "$group_needs_break" true 2>&1 | grep -E -q "<not supported>"
98 then
99 echo "Topdown weak groups test [Failed events not supported]"
100 err=1
101 return
102 fi
103 echo "Topdown weak groups test [Success]"
104 }
105
106 test_cputype() {
107 # Test --cputype argument.
108 echo "cputype test"
109
110 # Bogus PMU should fail.
111 if perf stat --cputype="123" -e instructions true > /dev/null 2>&1
112 then
113 echo "cputype test [Bogus PMU didn't fail]"
114 err=1
115 return
116 fi
117
118 # Find a known PMU for cputype.
119 pmu=""
120 for i in cpu cpu_atom armv8_pmuv3_0
121 do
122 if test -d "/sys/devices/$i"
123 then
124 pmu="$i"
125 break
126 fi
127 if perf stat -e "$i/instructions/" true > /dev/null 2>&1
128 then
129 pmu="$i"
130 break
131 fi
132 done
133 if test "x$pmu" = "x"
134 then
135 echo "cputype test [Skipped known PMU not found]"
136 return
137 fi
138
139 # Test running with cputype produces output.
140 if ! perf stat --cputype="$pmu" -e instructions true 2>&1 | grep -E -q "instructions"
141 then
142 echo "cputype test [Failed count missed with given filter]"
143 err=1
144 return
145 fi
146 echo "cputype test [Success]"
147 }
148
149 test_default_stat
150 test_stat_record_report
151 test_stat_record_script
152 test_stat_repeat_weak_groups
153 test_topdown_groups
154 test_topdown_weak_groups
155 test_cputype
156 exit $err
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