Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
1#!/bin/bash
2# perf trace summary (exclusive)
3# SPDX-License-Identifier: GPL-2.0
4
5# Check that perf trace works with various summary mode
6
7# shellcheck source=lib/probe.sh
8. "$(dirname $0)"/lib/probe.sh
9
10skip_if_no_perf_trace || exit 2
11[ "$(id -u)" = 0 ] || exit 2
12
13OUTPUT=$(mktemp /tmp/perf_trace_test.XXXXX)
14
15test_perf_trace() {
16 args=$1
17 workload="true"
18 search="^\s*(open|read|close).*[0-9]+%$"
19
20 echo "testing: perf trace ${args} -- ${workload}"
21 perf trace ${args} -- ${workload} >${OUTPUT} 2>&1
22 if [ $? -ne 0 ]; then
23 echo "Error: perf trace ${args} failed unexpectedly"
24 cat ${OUTPUT}
25 rm -f ${OUTPUT}
26 exit 1
27 fi
28
29 count=$(grep -E -c -m 3 "${search}" ${OUTPUT})
30 if [ "${count}" != "3" ]; then
31 echo "Error: cannot find enough pattern ${search} in the output"
32 cat ${OUTPUT}
33 rm -f ${OUTPUT}
34 exit 1
35 fi
36}
37
38# summary only for a process
39test_perf_trace "-s"
40
41# normal output with summary at the end
42test_perf_trace "-S"
43
44# summary only with an explicit summary mode
45test_perf_trace "-s --summary-mode=thread"
46
47# summary with normal output - total summary mode
48test_perf_trace "-S --summary-mode=total"
49
50# summary only for system wide - per-thread summary
51test_perf_trace "-as --summary-mode=thread --no-bpf-summary"
52
53# summary only for system wide - total summary mode
54test_perf_trace "-as --summary-mode=total --no-bpf-summary"
55
56if ! perf check feature -q bpf; then
57 echo "Skip --bpf-summary tests as perf built without libbpf"
58 rm -f ${OUTPUT}
59 exit 2
60fi
61
62# summary only for system wide - per-thread summary with BPF
63test_perf_trace "-as --summary-mode=thread --bpf-summary"
64
65# summary only for system wide - total summary mode with BPF
66test_perf_trace "-as --summary-mode=total --bpf-summary"
67
68# summary with normal output for system wide - total summary mode with BPF
69test_perf_trace "-aS --summary-mode=total --bpf-summary"
70
71# summary only for system wide - cgroup summary mode with BPF
72test_perf_trace "-as --summary-mode=cgroup --bpf-summary"
73
74# summary with normal output for system wide - cgroup summary mode with BPF
75test_perf_trace "-aS --summary-mode=cgroup --bpf-summary"
76
77rm -f ${OUTPUT}