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 record tests
3# SPDX-License-Identifier: GPL-2.0
4
5set -e
6
7shelldir=$(dirname "$0")
8# shellcheck source=lib/waiting.sh
9. "${shelldir}"/lib/waiting.sh
10
11err=0
12perfdata=$(mktemp /tmp/__perf_test.perf.data.XXXXX)
13testprog="perf test -w thloop"
14testsym="test_loop"
15
16cleanup() {
17 rm -rf "${perfdata}"
18 rm -rf "${perfdata}".old
19
20 trap - EXIT TERM INT
21}
22
23trap_cleanup() {
24 cleanup
25 exit 1
26}
27trap trap_cleanup EXIT TERM INT
28
29test_per_thread() {
30 echo "Basic --per-thread mode test"
31 if ! perf record -o /dev/null --quiet ${testprog} 2> /dev/null
32 then
33 echo "Per-thread record [Skipped event not supported]"
34 return
35 fi
36 if ! perf record --per-thread -o "${perfdata}" ${testprog} 2> /dev/null
37 then
38 echo "Per-thread record [Failed record]"
39 err=1
40 return
41 fi
42 if ! perf report -i "${perfdata}" -q | grep -q "${testsym}"
43 then
44 echo "Per-thread record [Failed missing output]"
45 err=1
46 return
47 fi
48
49 # run the test program in background (for 30 seconds)
50 ${testprog} 30 &
51 TESTPID=$!
52
53 rm -f "${perfdata}"
54
55 wait_for_threads ${TESTPID} 2
56 perf record -p "${TESTPID}" --per-thread -o "${perfdata}" sleep 1 2> /dev/null
57 kill ${TESTPID}
58
59 if [ ! -e "${perfdata}" ]
60 then
61 echo "Per-thread record [Failed record -p]"
62 err=1
63 return
64 fi
65 if ! perf report -i "${perfdata}" -q | grep -q "${testsym}"
66 then
67 echo "Per-thread record [Failed -p missing output]"
68 err=1
69 return
70 fi
71
72 echo "Basic --per-thread mode test [Success]"
73}
74
75test_register_capture() {
76 echo "Register capture test"
77 if ! perf list | grep -q 'br_inst_retired.near_call'
78 then
79 echo "Register capture test [Skipped missing event]"
80 return
81 fi
82 if ! perf record --intr-regs=\? 2>&1 | grep -q 'available registers: AX BX CX DX SI DI BP SP IP FLAGS CS SS R8 R9 R10 R11 R12 R13 R14 R15'
83 then
84 echo "Register capture test [Skipped missing registers]"
85 return
86 fi
87 if ! perf record -o - --intr-regs=di,r8,dx,cx -e br_inst_retired.near_call \
88 -c 1000 --per-thread ${testprog} 2> /dev/null \
89 | perf script -F ip,sym,iregs -i - 2> /dev/null \
90 | grep -q "DI:"
91 then
92 echo "Register capture test [Failed missing output]"
93 err=1
94 return
95 fi
96 echo "Register capture test [Success]"
97}
98
99test_system_wide() {
100 echo "Basic --system-wide mode test"
101 if ! perf record -aB --synth=no -o "${perfdata}" ${testprog} 2> /dev/null
102 then
103 echo "System-wide record [Skipped not supported]"
104 return
105 fi
106 if ! perf report -i "${perfdata}" -q | grep -q "${testsym}"
107 then
108 echo "System-wide record [Failed missing output]"
109 err=1
110 return
111 fi
112 if ! perf record -aB --synth=no -e cpu-clock,cs --threads=cpu \
113 -o "${perfdata}" ${testprog} 2> /dev/null
114 then
115 echo "System-wide record [Failed record --threads option]"
116 err=1
117 return
118 fi
119 if ! perf report -i "${perfdata}" -q | grep -q "${testsym}"
120 then
121 echo "System-wide record [Failed --threads missing output]"
122 err=1
123 return
124 fi
125 echo "Basic --system-wide mode test [Success]"
126}
127
128test_workload() {
129 echo "Basic target workload test"
130 if ! perf record -o "${perfdata}" ${testprog} 2> /dev/null
131 then
132 echo "Workload record [Failed record]"
133 err=1
134 return
135 fi
136 if ! perf report -i "${perfdata}" -q | grep -q "${testsym}"
137 then
138 echo "Workload record [Failed missing output]"
139 err=1
140 return
141 fi
142 if ! perf record -e cpu-clock,cs --threads=package \
143 -o "${perfdata}" ${testprog} 2> /dev/null
144 then
145 echo "Workload record [Failed record --threads option]"
146 err=1
147 return
148 fi
149 if ! perf report -i "${perfdata}" -q | grep -q "${testsym}"
150 then
151 echo "Workload record [Failed --threads missing output]"
152 err=1
153 return
154 fi
155 echo "Basic target workload test [Success]"
156}
157
158test_per_thread
159test_register_capture
160test_system_wide
161test_workload
162
163cleanup
164exit $err