projects/linux·blob master · refs

326 lines · 7.2 KiB

1#!/bin/bash
2# build id cache operations
3# SPDX-License-Identifier: GPL-2.0
4
5# skip if there's no readelf
6if ! [ -x "$(command -v readelf)" ]; then
7 echo "failed: no readelf, install binutils"
8 exit 2
9fi
10
11# skip if there's no compiler
12if ! [ -x "$(command -v cc)" ]; then
13 echo "failed: no compiler, install gcc"
14 exit 2
15fi
16
17# check what we need to test windows binaries
18add_pe=1
19run_pe=1
20if ! perf version --build-options | grep -q 'libbfd: .* on '; then
21 echo "WARNING: perf not built with libbfd. PE binaries will not be tested."
22 add_pe=0
23 run_pe=0
24fi
25if ! which wine > /dev/null; then
26 echo "WARNING: wine not found. PE binaries will not be run."
27 run_pe=0
28fi
29
30# set up wine
31if [ ${run_pe} -eq 1 ]; then
32 wineprefix=$(mktemp -d /tmp/perf.wineprefix.XXX)
33 export WINEPREFIX=${wineprefix}
34 # clear display variables to prevent wine from popping up dialogs
35 unset DISPLAY
36 unset WAYLAND_DISPLAY
37fi
38
39build_id_dir=
40ex_source=$(mktemp /tmp/perf_buildid_test.ex.XXX.c)
41ex_md5=$(mktemp /tmp/perf_buildid_test.ex.MD5.XXX)
42ex_sha1=$(mktemp /tmp/perf_buildid_test.ex.SHA1.XXX)
43ex_pe=$(dirname $0)/../pe-file.exe
44data=$(mktemp /tmp/perf_buildid_test.data.XXX)
45log_out=$(mktemp /tmp/perf_buildid_test.log.out.XXX)
46log_err=$(mktemp /tmp/perf_buildid_test.log.err.XXX)
47
48cleanup() {
49 rm -f ${ex_source} ${ex_md5} ${ex_sha1} ${data} ${log_out} ${log_err}
50 if [ ${run_pe} -eq 1 ]; then
51 rm -r ${wineprefix}
52 fi
53 if [ -d ${build_id_dir} ]; then
54 rm -rf ${build_id_dir}
55 fi
56 trap - EXIT TERM INT
57}
58
59trap_cleanup() {
60 echo "Unexpected signal in ${FUNCNAME[1]}"
61 cleanup
62 exit 1
63}
64trap trap_cleanup EXIT TERM INT
65
66# Test program based on the noploop workload.
67cat <<EOF > ${ex_source}
68#include <stdlib.h>
69#include <signal.h>
70#include <unistd.h>
71
72static volatile sig_atomic_t done;
73
74static void sighandler(int sig)
75{
76 (void)sig;
77 done = 1;
78}
79
80int main(int argc, const char **argv)
81{
82 int sec = 1;
83
84 if (argc > 1)
85 sec = atoi(argv[1]);
86
87 signal(SIGINT, sighandler);
88 signal(SIGALRM, sighandler);
89 alarm(sec);
90
91 while (!done)
92 continue;
93
94 return 0;
95}
96EOF
97cc -Wl,--build-id=sha1 ${ex_source} -o ${ex_sha1} -x c -
98cc -Wl,--build-id=md5 ${ex_source} -o ${ex_md5} -x c -
99echo "test binaries: ${ex_sha1} ${ex_md5} ${ex_pe}"
100
101get_build_id()
102{
103 case $1 in
104 *.exe)
105 # We don't have a tool that can pull a nicely formatted build-id out of
106 # a PE file, but we can extract the whole section with objcopy and
107 # format it ourselves. The .buildid section is a Debug Directory
108 # containing a CodeView entry:
109 # https://docs.microsoft.com/en-us/windows/win32/debug/pe-format#debug-directory-image-only
110 # https://github.com/dotnet/runtime/blob/da94c022576a5c3bbc0e896f006565905eb137f9/docs/design/specs/PE-COFF.md
111 # The build-id starts at byte 33 and must be rearranged into a GUID.
112 id=`objcopy -O binary --only-section=.buildid $1 /dev/stdout | \
113 cut -c 33-48 | hexdump -ve '/1 "%02x"' | \
114 sed 's@^\(..\)\(..\)\(..\)\(..\)\(..\)\(..\)\(..\)\(..\)\(.*\)0a$@\4\3\2\1\6\5\8\7\9@'`
115 ;;
116 *)
117 id=`readelf -n ${1} 2>/dev/null | grep 'Build ID' | awk '{print $3}'`
118 ;;
119 esac
120 echo ${id}
121}
122
123check()
124{
125 file=$1
126 perf_data=$2
127
128 id=$(get_build_id $file)
129 echo "build id: ${id}"
130
131 id_file=${id#??}
132 id_dir=${id%$id_file}
133 link=$build_id_dir/.build-id/$id_dir/$id_file
134 echo "link: ${link}"
135
136 if [ ! -h $link ]; then
137 echo "failed: link ${link} does not exist"
138 exit 1
139 fi
140
141 cached_file=${build_id_dir}/.build-id/$id_dir/`readlink ${link}`/elf
142 echo "file: ${cached_file}"
143
144 # Check for file permission of original file
145 # in case of pe-file.exe file
146 echo $1 | grep ".exe"
147 if [ $? -eq 0 ]; then
148 if [ -x $1 ] && [ ! -x $cached_file ]; then
149 echo "failed: file ${cached_file} executable does not exist"
150 exit 1
151 fi
152
153 if [ ! -x $cached_file ] && [ ! -e $cached_file ]; then
154 echo "failed: file ${cached_file} does not exist"
155 exit 1
156 fi
157 elif [ ! -x $cached_file ]; then
158 echo "failed: file ${cached_file} does not exist"
159 exit 1
160 fi
161
162 diff ${cached_file} ${1}
163 if [ $? -ne 0 ]; then
164 echo "failed: ${cached_file} do not match"
165 exit 1
166 fi
167
168 ${perf} buildid-cache -l | grep -q ${id}
169 if [ $? -ne 0 ]; then
170 echo "failed: ${id} is not reported by \"perf buildid-cache -l\""
171 exit 1
172 fi
173
174 if [ -n "${perf_data}" ]; then
175 ${perf} buildid-list -i ${perf_data} | grep -q ${id}
176 if [ $? -ne 0 ]; then
177 echo "failed: ${id} is not reported by \"perf buildid-list -i ${perf_data}\""
178 exit 1
179 fi
180 fi
181
182 echo "OK for ${1}"
183}
184
185test_add()
186{
187 build_id_dir=$(mktemp -d /tmp/perf_buildid_test.debug.XXX)
188 perf="perf --buildid-dir ${build_id_dir}"
189
190 ${perf} buildid-cache -v -a ${1}
191 if [ $? -ne 0 ]; then
192 echo "failed: add ${1} to build id cache"
193 exit 1
194 fi
195
196 check ${1}
197
198 rm -rf ${build_id_dir}
199}
200
201test_remove()
202{
203 build_id_dir=$(mktemp -d /tmp/perf_buildid_test.debug.XXX)
204 perf="perf --buildid-dir ${build_id_dir}"
205
206 ${perf} buildid-cache -v -a ${1}
207 if [ $? -ne 0 ]; then
208 echo "failed: add ${1} to build id cache"
209 exit 1
210 fi
211
212 id=$(get_build_id ${1})
213 if ! ${perf} buildid-cache -l | grep -q ${id}; then
214 echo "failed: ${id} not in cache"
215 exit 1
216 fi
217
218 ${perf} buildid-cache -v -r ${1}
219 if [ $? -ne 0 ]; then
220 echo "failed: remove ${id} from build id cache"
221 exit 1
222 fi
223
224 if ${perf} buildid-cache -l | grep -q ${id}; then
225 echo "failed: ${id} still in cache after remove"
226 exit 1
227 fi
228
229 echo "remove: OK"
230 rm -rf ${build_id_dir}
231}
232
233test_purge()
234{
235 build_id_dir=$(mktemp -d /tmp/perf_buildid_test.debug.XXX)
236 perf="perf --buildid-dir ${build_id_dir}"
237
238 id1=$(get_build_id ${ex_sha1})
239 ${perf} buildid-cache -v -a ${ex_sha1}
240 if ! ${perf} buildid-cache -l | grep -q ${id1}; then
241 echo "failed: ${id1} not in cache"
242 exit 1
243 fi
244
245 id2=$(get_build_id ${ex_md5})
246 ${perf} buildid-cache -v -a ${ex_md5}
247 if ! ${perf} buildid-cache -l | grep -q ${id2}; then
248 echo "failed: ${id2} not in cache"
249 exit 1
250 fi
251
252 # Purge by path
253 ${perf} buildid-cache -v -p ${ex_sha1}
254 if [ $? -ne 0 ]; then
255 echo "failed: purge build id cache of ${ex_sha1}"
256 exit 1
257 fi
258
259 ${perf} buildid-cache -v -p ${ex_md5}
260 if [ $? -ne 0 ]; then
261 echo "failed: purge build id cache of ${ex_md5}"
262 exit 1
263 fi
264
265 # Verify both are gone
266 if ${perf} buildid-cache -l | grep -q ${id1}; then
267 echo "failed: ${id1} still in cache after purge"
268 exit 1
269 fi
270
271 if ${perf} buildid-cache -l | grep -q ${id2}; then
272 echo "failed: ${id2} still in cache after purge"
273 exit 1
274 fi
275
276 echo "purge: OK"
277 rm -rf ${build_id_dir}
278}
279
280test_record()
281{
282 build_id_dir=$(mktemp -d /tmp/perf_buildid_test.debug.XXX)
283 perf="perf --buildid-dir ${build_id_dir}"
284
285 echo "running: perf record $*"
286 ${perf} record --buildid-all -o ${data} "$@" 1>${log_out} 2>${log_err}
287 if [ $? -ne 0 ]; then
288 echo "failed: record $*"
289 echo "see log: ${log_err}"
290 exit 1
291 fi
292
293 args="$*"
294 check ${args##* } ${data}
295
296 rm -f ${log_out} ${log_err}
297 rm -rf ${build_id_dir}
298 rm -rf ${data}
299}
300
301# add binaries manual via perf buildid-cache -a
302test_add ${ex_sha1}
303test_add ${ex_md5}
304if [ ${add_pe} -eq 1 ]; then
305 test_add ${ex_pe}
306fi
307
308# add binaries via perf record post processing
309test_record ${ex_sha1}
310test_record ${ex_md5}
311if [ ${run_pe} -eq 1 ]; then
312 test_record wine ${ex_pe}
313fi
314
315# remove binaries manually via perf buildid-cache -r
316test_remove ${ex_sha1}
317test_remove ${ex_md5}
318if [ ${add_pe} -eq 1 ]; then
319 test_remove ${ex_pe}
320fi
321
322# purge binaries manually via perf buildid-cache -p
323test_purge
324
325cleanup
326exit 0