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 | egrep -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 egrep -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_topdown_groups() {
32 # Topdown events must be grouped with the slots event first. Test that
33 # parse-events reorders this.
34 echo "Topdown event group test"
35 if ! perf stat -e '{slots,topdown-retiring}' true > /dev/null 2>&1
36 then
37 echo "Topdown event group test [Skipped event parsing failed]"
38 return
39 fi
40 if perf stat -e '{slots,topdown-retiring}' true 2>&1 | egrep -q "<not supported>"
41 then
42 echo "Topdown event group test [Failed events not supported]"
43 err=1
44 return
45 fi
46 if perf stat -e '{topdown-retiring,slots}' true 2>&1 | egrep -q "<not supported>"
47 then
48 echo "Topdown event group test [Failed slots not reordered first]"
49 err=1
50 return
51 fi
52 echo "Topdown event group test [Success]"
53}
54
55test_topdown_weak_groups() {
56 # Weak groups break if the perf_event_open of multiple grouped events
57 # fails. Breaking a topdown group causes the events to fail. Test a very large
58 # grouping to see that the topdown events aren't broken out.
59 echo "Topdown weak groups test"
60 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"
61 if ! perf stat --no-merge -e "$ok_grouping" true > /dev/null 2>&1
62 then
63 echo "Topdown weak groups test [Skipped event parsing failed]"
64 return
65 fi
66 group_needs_break="{slots,topdown-bad-spec,topdown-be-bound,topdown-fe-bound,topdown-retiring,branch-instructions,branch-misses,bus-cycles,cache-misses,cache-references,cpu-cycles,instructions,mem-loads,mem-stores,ref-cycles,cache-misses,cache-references}:W"
67 if perf stat --no-merge -e "$group_needs_break" true 2>&1 | egrep -q "<not supported>"
68 then
69 echo "Topdown weak groups test [Failed events not supported]"
70 err=1
71 return
72 fi
73 echo "Topdown weak groups test [Success]"
74}
75
76test_default_stat
77test_stat_record_report
78test_topdown_groups
79test_topdown_weak_groups
80exit $err