Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
1#!/bin/sh
2# perf stat tests
3# SPDX-License-Identifier: GPL-2.0
4
5set -e
6
7err=0
8test_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
19test_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
31test_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
43test_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
61test_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
85test_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
106test_default_stat
107test_stat_record_report
108test_stat_record_script
109test_stat_repeat_weak_groups
110test_topdown_groups
111test_topdown_weak_groups
112exit $err