Commit | Line | Data |
---|---|---|
d944c4ee | 1 | #include <linux/types.h> |
b55ae0a9 AH |
2 | #include <stdlib.h> |
3 | #include <unistd.h> | |
4 | #include <stdio.h> | |
b55ae0a9 AH |
5 | #include <ctype.h> |
6 | #include <string.h> | |
7 | ||
8 | #include "parse-events.h" | |
9 | #include "evlist.h" | |
10 | #include "evsel.h" | |
11 | #include "thread_map.h" | |
12 | #include "cpumap.h" | |
13 | #include "machine.h" | |
14 | #include "event.h" | |
15 | #include "thread.h" | |
16 | ||
17 | #include "tests.h" | |
18 | ||
19 | #define BUFSZ 1024 | |
20 | #define READLEN 128 | |
21 | ||
7a77bc2c AH |
22 | struct state { |
23 | u64 done[1024]; | |
24 | size_t done_cnt; | |
25 | }; | |
26 | ||
b55ae0a9 AH |
27 | static unsigned int hex(char c) |
28 | { | |
29 | if (c >= '0' && c <= '9') | |
30 | return c - '0'; | |
31 | if (c >= 'a' && c <= 'f') | |
32 | return c - 'a' + 10; | |
33 | return c - 'A' + 10; | |
34 | } | |
35 | ||
729a7ed1 JS |
36 | static size_t read_objdump_line(const char *line, size_t line_len, void *buf, |
37 | size_t len) | |
b55ae0a9 AH |
38 | { |
39 | const char *p; | |
729a7ed1 | 40 | size_t i, j = 0; |
b55ae0a9 AH |
41 | |
42 | /* Skip to a colon */ | |
43 | p = strchr(line, ':'); | |
44 | if (!p) | |
729a7ed1 | 45 | return 0; |
b55ae0a9 AH |
46 | i = p + 1 - line; |
47 | ||
48 | /* Read bytes */ | |
729a7ed1 | 49 | while (j < len) { |
b55ae0a9 AH |
50 | char c1, c2; |
51 | ||
52 | /* Skip spaces */ | |
53 | for (; i < line_len; i++) { | |
54 | if (!isspace(line[i])) | |
55 | break; | |
56 | } | |
57 | /* Get 2 hex digits */ | |
58 | if (i >= line_len || !isxdigit(line[i])) | |
59 | break; | |
60 | c1 = line[i++]; | |
61 | if (i >= line_len || !isxdigit(line[i])) | |
62 | break; | |
63 | c2 = line[i++]; | |
64 | /* Followed by a space */ | |
65 | if (i < line_len && line[i] && !isspace(line[i])) | |
66 | break; | |
67 | /* Store byte */ | |
729a7ed1 JS |
68 | *(unsigned char *)buf = (hex(c1) << 4) | hex(c2); |
69 | buf += 1; | |
70 | j++; | |
b55ae0a9 | 71 | } |
729a7ed1 JS |
72 | /* return number of successfully read bytes */ |
73 | return j; | |
b55ae0a9 AH |
74 | } |
75 | ||
729a7ed1 | 76 | static int read_objdump_output(FILE *f, void *buf, size_t *len, u64 start_addr) |
b55ae0a9 AH |
77 | { |
78 | char *line = NULL; | |
729a7ed1 | 79 | size_t line_len, off_last = 0; |
b55ae0a9 AH |
80 | ssize_t ret; |
81 | int err = 0; | |
edfdb7ea | 82 | u64 addr, last_addr = start_addr; |
729a7ed1 JS |
83 | |
84 | while (off_last < *len) { | |
85 | size_t off, read_bytes, written_bytes; | |
86 | unsigned char tmp[BUFSZ]; | |
b55ae0a9 | 87 | |
b55ae0a9 AH |
88 | ret = getline(&line, &line_len, f); |
89 | if (feof(f)) | |
90 | break; | |
91 | if (ret < 0) { | |
92 | pr_debug("getline failed\n"); | |
93 | err = -1; | |
94 | break; | |
95 | } | |
729a7ed1 JS |
96 | |
97 | /* read objdump data into temporary buffer */ | |
98 | read_bytes = read_objdump_line(line, ret, tmp, sizeof(tmp)); | |
99 | if (!read_bytes) | |
100 | continue; | |
101 | ||
102 | if (sscanf(line, "%"PRIx64, &addr) != 1) | |
103 | continue; | |
edfdb7ea JS |
104 | if (addr < last_addr) { |
105 | pr_debug("addr going backwards, read beyond section?\n"); | |
106 | break; | |
107 | } | |
108 | last_addr = addr; | |
729a7ed1 JS |
109 | |
110 | /* copy it from temporary buffer to 'buf' according | |
111 | * to address on current objdump line */ | |
112 | off = addr - start_addr; | |
113 | if (off >= *len) | |
114 | break; | |
115 | written_bytes = MIN(read_bytes, *len - off); | |
116 | memcpy(buf + off, tmp, written_bytes); | |
117 | off_last = off + written_bytes; | |
b55ae0a9 AH |
118 | } |
119 | ||
729a7ed1 JS |
120 | /* len returns number of bytes that could not be read */ |
121 | *len -= off_last; | |
122 | ||
b55ae0a9 AH |
123 | free(line); |
124 | ||
125 | return err; | |
126 | } | |
127 | ||
128 | static int read_via_objdump(const char *filename, u64 addr, void *buf, | |
129 | size_t len) | |
130 | { | |
131 | char cmd[PATH_MAX * 2]; | |
132 | const char *fmt; | |
133 | FILE *f; | |
134 | int ret; | |
135 | ||
06f679c1 | 136 | fmt = "%s -z -d --start-address=0x%"PRIx64" --stop-address=0x%"PRIx64" %s"; |
b55ae0a9 AH |
137 | ret = snprintf(cmd, sizeof(cmd), fmt, "objdump", addr, addr + len, |
138 | filename); | |
139 | if (ret <= 0 || (size_t)ret >= sizeof(cmd)) | |
140 | return -1; | |
141 | ||
142 | pr_debug("Objdump command is: %s\n", cmd); | |
143 | ||
7a77bc2c AH |
144 | /* Ignore objdump errors */ |
145 | strcat(cmd, " 2>/dev/null"); | |
146 | ||
b55ae0a9 AH |
147 | f = popen(cmd, "r"); |
148 | if (!f) { | |
149 | pr_debug("popen failed\n"); | |
150 | return -1; | |
151 | } | |
152 | ||
729a7ed1 | 153 | ret = read_objdump_output(f, buf, &len, addr); |
b55ae0a9 AH |
154 | if (len) { |
155 | pr_debug("objdump read too few bytes\n"); | |
156 | if (!ret) | |
157 | ret = len; | |
158 | } | |
159 | ||
160 | pclose(f); | |
161 | ||
162 | return ret; | |
163 | } | |
164 | ||
fd405cf6 JS |
165 | static void dump_buf(unsigned char *buf, size_t len) |
166 | { | |
167 | size_t i; | |
168 | ||
169 | for (i = 0; i < len; i++) { | |
170 | pr_debug("0x%02x ", buf[i]); | |
171 | if (i % 16 == 15) | |
172 | pr_debug("\n"); | |
173 | } | |
174 | pr_debug("\n"); | |
175 | } | |
176 | ||
b55ae0a9 | 177 | static int read_object_code(u64 addr, size_t len, u8 cpumode, |
29f9e521 | 178 | struct thread *thread, struct state *state) |
b55ae0a9 AH |
179 | { |
180 | struct addr_location al; | |
181 | unsigned char buf1[BUFSZ]; | |
182 | unsigned char buf2[BUFSZ]; | |
183 | size_t ret_len; | |
184 | u64 objdump_addr; | |
185 | int ret; | |
186 | ||
187 | pr_debug("Reading object code for memory address: %#"PRIx64"\n", addr); | |
188 | ||
bb871a9c | 189 | thread__find_addr_map(thread, cpumode, MAP__FUNCTION, addr, &al); |
b55ae0a9 AH |
190 | if (!al.map || !al.map->dso) { |
191 | pr_debug("thread__find_addr_map failed\n"); | |
192 | return -1; | |
193 | } | |
194 | ||
195 | pr_debug("File is: %s\n", al.map->dso->long_name); | |
196 | ||
7a77bc2c AH |
197 | if (al.map->dso->symtab_type == DSO_BINARY_TYPE__KALLSYMS && |
198 | !dso__is_kcore(al.map->dso)) { | |
b55ae0a9 AH |
199 | pr_debug("Unexpected kernel address - skipping\n"); |
200 | return 0; | |
201 | } | |
202 | ||
203 | pr_debug("On file address is: %#"PRIx64"\n", al.addr); | |
204 | ||
205 | if (len > BUFSZ) | |
206 | len = BUFSZ; | |
207 | ||
208 | /* Do not go off the map */ | |
209 | if (addr + len > al.map->end) | |
210 | len = al.map->end - addr; | |
211 | ||
212 | /* Read the object code using perf */ | |
29f9e521 ACM |
213 | ret_len = dso__data_read_offset(al.map->dso, thread->mg->machine, |
214 | al.addr, buf1, len); | |
b55ae0a9 AH |
215 | if (ret_len != len) { |
216 | pr_debug("dso__data_read_offset failed\n"); | |
217 | return -1; | |
218 | } | |
219 | ||
220 | /* | |
221 | * Converting addresses for use by objdump requires more information. | |
222 | * map__load() does that. See map__rip_2objdump() for details. | |
223 | */ | |
224 | if (map__load(al.map, NULL)) | |
225 | return -1; | |
226 | ||
7a77bc2c AH |
227 | /* objdump struggles with kcore - try each map only once */ |
228 | if (dso__is_kcore(al.map->dso)) { | |
229 | size_t d; | |
230 | ||
231 | for (d = 0; d < state->done_cnt; d++) { | |
232 | if (state->done[d] == al.map->start) { | |
233 | pr_debug("kcore map tested already"); | |
234 | pr_debug(" - skipping\n"); | |
235 | return 0; | |
236 | } | |
237 | } | |
238 | if (state->done_cnt >= ARRAY_SIZE(state->done)) { | |
239 | pr_debug("Too many kcore maps - skipping\n"); | |
240 | return 0; | |
241 | } | |
242 | state->done[state->done_cnt++] = al.map->start; | |
243 | } | |
244 | ||
b55ae0a9 AH |
245 | /* Read the object code using objdump */ |
246 | objdump_addr = map__rip_2objdump(al.map, al.addr); | |
247 | ret = read_via_objdump(al.map->dso->long_name, objdump_addr, buf2, len); | |
248 | if (ret > 0) { | |
249 | /* | |
250 | * The kernel maps are inaccurate - assume objdump is right in | |
251 | * that case. | |
252 | */ | |
253 | if (cpumode == PERF_RECORD_MISC_KERNEL || | |
254 | cpumode == PERF_RECORD_MISC_GUEST_KERNEL) { | |
255 | len -= ret; | |
7a77bc2c | 256 | if (len) { |
b55ae0a9 | 257 | pr_debug("Reducing len to %zu\n", len); |
7a77bc2c AH |
258 | } else if (dso__is_kcore(al.map->dso)) { |
259 | /* | |
260 | * objdump cannot handle very large segments | |
261 | * that may be found in kcore. | |
262 | */ | |
263 | pr_debug("objdump failed for kcore"); | |
264 | pr_debug(" - skipping\n"); | |
265 | return 0; | |
266 | } else { | |
b55ae0a9 | 267 | return -1; |
7a77bc2c | 268 | } |
b55ae0a9 AH |
269 | } |
270 | } | |
271 | if (ret < 0) { | |
272 | pr_debug("read_via_objdump failed\n"); | |
273 | return -1; | |
274 | } | |
275 | ||
276 | /* The results should be identical */ | |
277 | if (memcmp(buf1, buf2, len)) { | |
278 | pr_debug("Bytes read differ from those read by objdump\n"); | |
fd405cf6 JS |
279 | pr_debug("buf1 (dso):\n"); |
280 | dump_buf(buf1, len); | |
281 | pr_debug("buf2 (objdump):\n"); | |
282 | dump_buf(buf2, len); | |
b55ae0a9 AH |
283 | return -1; |
284 | } | |
285 | pr_debug("Bytes read match those read by objdump\n"); | |
286 | ||
287 | return 0; | |
288 | } | |
289 | ||
290 | static int process_sample_event(struct machine *machine, | |
291 | struct perf_evlist *evlist, | |
7a77bc2c | 292 | union perf_event *event, struct state *state) |
b55ae0a9 AH |
293 | { |
294 | struct perf_sample sample; | |
295 | struct thread *thread; | |
b91fc39f | 296 | int ret; |
b55ae0a9 AH |
297 | |
298 | if (perf_evlist__parse_sample(evlist, event, &sample)) { | |
299 | pr_debug("perf_evlist__parse_sample failed\n"); | |
300 | return -1; | |
301 | } | |
302 | ||
13ce34df | 303 | thread = machine__findnew_thread(machine, sample.pid, sample.tid); |
b55ae0a9 AH |
304 | if (!thread) { |
305 | pr_debug("machine__findnew_thread failed\n"); | |
306 | return -1; | |
307 | } | |
308 | ||
473398a2 | 309 | ret = read_object_code(sample.ip, READLEN, sample.cpumode, thread, state); |
b91fc39f ACM |
310 | thread__put(thread); |
311 | return ret; | |
b55ae0a9 AH |
312 | } |
313 | ||
314 | static int process_event(struct machine *machine, struct perf_evlist *evlist, | |
7a77bc2c | 315 | union perf_event *event, struct state *state) |
b55ae0a9 AH |
316 | { |
317 | if (event->header.type == PERF_RECORD_SAMPLE) | |
7a77bc2c | 318 | return process_sample_event(machine, evlist, event, state); |
b55ae0a9 | 319 | |
48095b72 AH |
320 | if (event->header.type == PERF_RECORD_THROTTLE || |
321 | event->header.type == PERF_RECORD_UNTHROTTLE) | |
322 | return 0; | |
323 | ||
324 | if (event->header.type < PERF_RECORD_MAX) { | |
325 | int ret; | |
326 | ||
327 | ret = machine__process_event(machine, event, NULL); | |
328 | if (ret < 0) | |
329 | pr_debug("machine__process_event failed, event type %u\n", | |
330 | event->header.type); | |
331 | return ret; | |
332 | } | |
b55ae0a9 AH |
333 | |
334 | return 0; | |
335 | } | |
336 | ||
7a77bc2c AH |
337 | static int process_events(struct machine *machine, struct perf_evlist *evlist, |
338 | struct state *state) | |
b55ae0a9 AH |
339 | { |
340 | union perf_event *event; | |
341 | int i, ret; | |
342 | ||
343 | for (i = 0; i < evlist->nr_mmaps; i++) { | |
344 | while ((event = perf_evlist__mmap_read(evlist, i)) != NULL) { | |
7a77bc2c | 345 | ret = process_event(machine, evlist, event, state); |
8e50d384 | 346 | perf_evlist__mmap_consume(evlist, i); |
b55ae0a9 AH |
347 | if (ret < 0) |
348 | return ret; | |
349 | } | |
350 | } | |
351 | return 0; | |
352 | } | |
353 | ||
354 | static int comp(const void *a, const void *b) | |
355 | { | |
356 | return *(int *)a - *(int *)b; | |
357 | } | |
358 | ||
359 | static void do_sort_something(void) | |
360 | { | |
309b5185 | 361 | int buf[40960], i; |
b55ae0a9 | 362 | |
309b5185 DA |
363 | for (i = 0; i < (int)ARRAY_SIZE(buf); i++) |
364 | buf[i] = ARRAY_SIZE(buf) - i - 1; | |
b55ae0a9 | 365 | |
309b5185 | 366 | qsort(buf, ARRAY_SIZE(buf), sizeof(int), comp); |
b55ae0a9 | 367 | |
309b5185 | 368 | for (i = 0; i < (int)ARRAY_SIZE(buf); i++) { |
b55ae0a9 AH |
369 | if (buf[i] != i) { |
370 | pr_debug("qsort failed\n"); | |
371 | break; | |
372 | } | |
373 | } | |
374 | } | |
375 | ||
376 | static void sort_something(void) | |
377 | { | |
378 | int i; | |
379 | ||
380 | for (i = 0; i < 10; i++) | |
381 | do_sort_something(); | |
382 | } | |
383 | ||
384 | static void syscall_something(void) | |
385 | { | |
386 | int pipefd[2]; | |
387 | int i; | |
388 | ||
389 | for (i = 0; i < 1000; i++) { | |
390 | if (pipe(pipefd) < 0) { | |
391 | pr_debug("pipe failed\n"); | |
392 | break; | |
393 | } | |
394 | close(pipefd[1]); | |
395 | close(pipefd[0]); | |
396 | } | |
397 | } | |
398 | ||
399 | static void fs_something(void) | |
400 | { | |
401 | const char *test_file_name = "temp-perf-code-reading-test-file--"; | |
402 | FILE *f; | |
403 | int i; | |
404 | ||
405 | for (i = 0; i < 1000; i++) { | |
406 | f = fopen(test_file_name, "w+"); | |
407 | if (f) { | |
408 | fclose(f); | |
409 | unlink(test_file_name); | |
410 | } | |
411 | } | |
412 | } | |
413 | ||
414 | static void do_something(void) | |
415 | { | |
416 | fs_something(); | |
417 | ||
418 | sort_something(); | |
419 | ||
420 | syscall_something(); | |
421 | } | |
422 | ||
423 | enum { | |
424 | TEST_CODE_READING_OK, | |
425 | TEST_CODE_READING_NO_VMLINUX, | |
7a77bc2c | 426 | TEST_CODE_READING_NO_KCORE, |
b55ae0a9 | 427 | TEST_CODE_READING_NO_ACCESS, |
7a77bc2c | 428 | TEST_CODE_READING_NO_KERNEL_OBJ, |
b55ae0a9 AH |
429 | }; |
430 | ||
7a77bc2c | 431 | static int do_test_code_reading(bool try_kcore) |
b55ae0a9 | 432 | { |
b55ae0a9 AH |
433 | struct machine *machine; |
434 | struct thread *thread; | |
b4006796 | 435 | struct record_opts opts = { |
b55ae0a9 AH |
436 | .mmap_pages = UINT_MAX, |
437 | .user_freq = UINT_MAX, | |
438 | .user_interval = ULLONG_MAX, | |
5243ba76 | 439 | .freq = 500, |
b55ae0a9 AH |
440 | .target = { |
441 | .uses_mmap = true, | |
442 | }, | |
443 | }; | |
7a77bc2c AH |
444 | struct state state = { |
445 | .done_cnt = 0, | |
446 | }; | |
b55ae0a9 AH |
447 | struct thread_map *threads = NULL; |
448 | struct cpu_map *cpus = NULL; | |
449 | struct perf_evlist *evlist = NULL; | |
450 | struct perf_evsel *evsel = NULL; | |
451 | int err = -1, ret; | |
452 | pid_t pid; | |
453 | struct map *map; | |
7a77bc2c | 454 | bool have_vmlinux, have_kcore, excl_kernel = false; |
b55ae0a9 AH |
455 | |
456 | pid = getpid(); | |
457 | ||
0fd4008e | 458 | machine = machine__new_host(); |
b55ae0a9 AH |
459 | |
460 | ret = machine__create_kernel_maps(machine); | |
461 | if (ret < 0) { | |
462 | pr_debug("machine__create_kernel_maps failed\n"); | |
463 | goto out_err; | |
464 | } | |
465 | ||
7a77bc2c AH |
466 | /* Force the use of kallsyms instead of vmlinux to try kcore */ |
467 | if (try_kcore) | |
468 | symbol_conf.kallsyms_name = "/proc/kallsyms"; | |
469 | ||
b55ae0a9 | 470 | /* Load kernel map */ |
a5e813c6 | 471 | map = machine__kernel_map(machine); |
b55ae0a9 AH |
472 | ret = map__load(map, NULL); |
473 | if (ret < 0) { | |
474 | pr_debug("map__load failed\n"); | |
475 | goto out_err; | |
476 | } | |
7a77bc2c AH |
477 | have_vmlinux = dso__is_vmlinux(map->dso); |
478 | have_kcore = dso__is_kcore(map->dso); | |
479 | ||
480 | /* 2nd time through we just try kcore */ | |
481 | if (try_kcore && !have_kcore) | |
482 | return TEST_CODE_READING_NO_KCORE; | |
483 | ||
484 | /* No point getting kernel events if there is no kernel object */ | |
485 | if (!have_vmlinux && !have_kcore) | |
b55ae0a9 AH |
486 | excl_kernel = true; |
487 | ||
488 | threads = thread_map__new_by_tid(pid); | |
489 | if (!threads) { | |
490 | pr_debug("thread_map__new_by_tid failed\n"); | |
491 | goto out_err; | |
492 | } | |
493 | ||
494 | ret = perf_event__synthesize_thread_map(NULL, threads, | |
9d9cad76 | 495 | perf_event__process, machine, false, 500); |
b55ae0a9 AH |
496 | if (ret < 0) { |
497 | pr_debug("perf_event__synthesize_thread_map failed\n"); | |
498 | goto out_err; | |
499 | } | |
500 | ||
314add6b | 501 | thread = machine__findnew_thread(machine, pid, pid); |
b55ae0a9 AH |
502 | if (!thread) { |
503 | pr_debug("machine__findnew_thread failed\n"); | |
b91fc39f | 504 | goto out_put; |
b55ae0a9 AH |
505 | } |
506 | ||
507 | cpus = cpu_map__new(NULL); | |
508 | if (!cpus) { | |
509 | pr_debug("cpu_map__new failed\n"); | |
b91fc39f | 510 | goto out_put; |
b55ae0a9 AH |
511 | } |
512 | ||
513 | while (1) { | |
514 | const char *str; | |
515 | ||
516 | evlist = perf_evlist__new(); | |
517 | if (!evlist) { | |
518 | pr_debug("perf_evlist__new failed\n"); | |
b91fc39f | 519 | goto out_put; |
b55ae0a9 AH |
520 | } |
521 | ||
522 | perf_evlist__set_maps(evlist, cpus, threads); | |
523 | ||
524 | if (excl_kernel) | |
525 | str = "cycles:u"; | |
526 | else | |
527 | str = "cycles"; | |
528 | pr_debug("Parsing event '%s'\n", str); | |
b39b8393 | 529 | ret = parse_events(evlist, str, NULL); |
b55ae0a9 AH |
530 | if (ret < 0) { |
531 | pr_debug("parse_events failed\n"); | |
b91fc39f | 532 | goto out_put; |
b55ae0a9 AH |
533 | } |
534 | ||
e68ae9cf | 535 | perf_evlist__config(evlist, &opts, NULL); |
b55ae0a9 AH |
536 | |
537 | evsel = perf_evlist__first(evlist); | |
538 | ||
539 | evsel->attr.comm = 1; | |
540 | evsel->attr.disabled = 1; | |
541 | evsel->attr.enable_on_exec = 0; | |
542 | ||
543 | ret = perf_evlist__open(evlist); | |
544 | if (ret < 0) { | |
545 | if (!excl_kernel) { | |
546 | excl_kernel = true; | |
7320b1b3 JO |
547 | /* |
548 | * Both cpus and threads are now owned by evlist | |
549 | * and will be freed by following perf_evlist__set_maps | |
550 | * call. Getting refference to keep them alive. | |
551 | */ | |
552 | cpu_map__get(cpus); | |
553 | thread_map__get(threads); | |
ae450a7d | 554 | perf_evlist__set_maps(evlist, NULL, NULL); |
b55ae0a9 AH |
555 | perf_evlist__delete(evlist); |
556 | evlist = NULL; | |
557 | continue; | |
558 | } | |
6880bbf9 ACM |
559 | |
560 | if (verbose) { | |
561 | char errbuf[512]; | |
562 | perf_evlist__strerror_open(evlist, errno, errbuf, sizeof(errbuf)); | |
563 | pr_debug("perf_evlist__open() failed!\n%s\n", errbuf); | |
564 | } | |
565 | ||
b91fc39f | 566 | goto out_put; |
b55ae0a9 AH |
567 | } |
568 | break; | |
569 | } | |
570 | ||
571 | ret = perf_evlist__mmap(evlist, UINT_MAX, false); | |
572 | if (ret < 0) { | |
573 | pr_debug("perf_evlist__mmap failed\n"); | |
b91fc39f | 574 | goto out_put; |
b55ae0a9 AH |
575 | } |
576 | ||
577 | perf_evlist__enable(evlist); | |
578 | ||
579 | do_something(); | |
580 | ||
581 | perf_evlist__disable(evlist); | |
582 | ||
7a77bc2c | 583 | ret = process_events(machine, evlist, &state); |
b55ae0a9 | 584 | if (ret < 0) |
b91fc39f | 585 | goto out_put; |
b55ae0a9 | 586 | |
7a77bc2c AH |
587 | if (!have_vmlinux && !have_kcore && !try_kcore) |
588 | err = TEST_CODE_READING_NO_KERNEL_OBJ; | |
589 | else if (!have_vmlinux && !try_kcore) | |
b55ae0a9 AH |
590 | err = TEST_CODE_READING_NO_VMLINUX; |
591 | else if (excl_kernel) | |
592 | err = TEST_CODE_READING_NO_ACCESS; | |
593 | else | |
594 | err = TEST_CODE_READING_OK; | |
b91fc39f ACM |
595 | out_put: |
596 | thread__put(thread); | |
b55ae0a9 | 597 | out_err: |
b91fc39f | 598 | |
b55ae0a9 | 599 | if (evlist) { |
b55ae0a9 | 600 | perf_evlist__delete(evlist); |
03ad9747 | 601 | } else { |
f30a79b0 | 602 | cpu_map__put(cpus); |
186fbb74 | 603 | thread_map__put(threads); |
03ad9747 | 604 | } |
b55ae0a9 | 605 | machine__delete_threads(machine); |
0fd4008e | 606 | machine__delete(machine); |
b55ae0a9 AH |
607 | |
608 | return err; | |
609 | } | |
610 | ||
721a1f53 | 611 | int test__code_reading(int subtest __maybe_unused) |
b55ae0a9 AH |
612 | { |
613 | int ret; | |
614 | ||
7a77bc2c AH |
615 | ret = do_test_code_reading(false); |
616 | if (!ret) | |
617 | ret = do_test_code_reading(true); | |
b55ae0a9 AH |
618 | |
619 | switch (ret) { | |
620 | case TEST_CODE_READING_OK: | |
621 | return 0; | |
622 | case TEST_CODE_READING_NO_VMLINUX: | |
597bdeb4 | 623 | pr_debug("no vmlinux\n"); |
b55ae0a9 | 624 | return 0; |
7a77bc2c | 625 | case TEST_CODE_READING_NO_KCORE: |
597bdeb4 | 626 | pr_debug("no kcore\n"); |
7a77bc2c | 627 | return 0; |
b55ae0a9 | 628 | case TEST_CODE_READING_NO_ACCESS: |
597bdeb4 | 629 | pr_debug("no access\n"); |
b55ae0a9 | 630 | return 0; |
7a77bc2c | 631 | case TEST_CODE_READING_NO_KERNEL_OBJ: |
597bdeb4 | 632 | pr_debug("no kernel obj\n"); |
7a77bc2c | 633 | return 0; |
b55ae0a9 AH |
634 | default: |
635 | return -1; | |
636 | }; | |
637 | } |