Commit | Line | Data |
---|---|---|
1c6a800c ACM |
1 | /* |
2 | * builtin-test.c | |
3 | * | |
4 | * Builtin regression testing command: ever growing number of sanity tests | |
5 | */ | |
6 | #include "builtin.h" | |
7 | ||
8 | #include "util/cache.h" | |
9 | #include "util/debug.h" | |
de5fa3a8 | 10 | #include "util/evlist.h" |
1c6a800c | 11 | #include "util/parse-options.h" |
de5fa3a8 | 12 | #include "util/parse-events.h" |
1c6a800c | 13 | #include "util/symbol.h" |
fd78260b | 14 | #include "util/thread_map.h" |
1c6a800c ACM |
15 | |
16 | static long page_size; | |
17 | ||
18 | static int vmlinux_matches_kallsyms_filter(struct map *map __used, struct symbol *sym) | |
19 | { | |
20 | bool *visited = symbol__priv(sym); | |
21 | *visited = true; | |
22 | return 0; | |
23 | } | |
24 | ||
25 | static int test__vmlinux_matches_kallsyms(void) | |
26 | { | |
27 | int err = -1; | |
28 | struct rb_node *nd; | |
29 | struct symbol *sym; | |
30 | struct map *kallsyms_map, *vmlinux_map; | |
31 | struct machine kallsyms, vmlinux; | |
32 | enum map_type type = MAP__FUNCTION; | |
33 | struct ref_reloc_sym ref_reloc_sym = { .name = "_stext", }; | |
34 | ||
35 | /* | |
36 | * Step 1: | |
37 | * | |
38 | * Init the machines that will hold kernel, modules obtained from | |
39 | * both vmlinux + .ko files and from /proc/kallsyms split by modules. | |
40 | */ | |
41 | machine__init(&kallsyms, "", HOST_KERNEL_ID); | |
42 | machine__init(&vmlinux, "", HOST_KERNEL_ID); | |
43 | ||
44 | /* | |
45 | * Step 2: | |
46 | * | |
47 | * Create the kernel maps for kallsyms and the DSO where we will then | |
48 | * load /proc/kallsyms. Also create the modules maps from /proc/modules | |
49 | * and find the .ko files that match them in /lib/modules/`uname -r`/. | |
50 | */ | |
51 | if (machine__create_kernel_maps(&kallsyms) < 0) { | |
52 | pr_debug("machine__create_kernel_maps "); | |
53 | return -1; | |
54 | } | |
55 | ||
56 | /* | |
57 | * Step 3: | |
58 | * | |
59 | * Load and split /proc/kallsyms into multiple maps, one per module. | |
60 | */ | |
61 | if (machine__load_kallsyms(&kallsyms, "/proc/kallsyms", type, NULL) <= 0) { | |
62 | pr_debug("dso__load_kallsyms "); | |
63 | goto out; | |
64 | } | |
65 | ||
66 | /* | |
67 | * Step 4: | |
68 | * | |
69 | * kallsyms will be internally on demand sorted by name so that we can | |
70 | * find the reference relocation * symbol, i.e. the symbol we will use | |
71 | * to see if the running kernel was relocated by checking if it has the | |
72 | * same value in the vmlinux file we load. | |
73 | */ | |
74 | kallsyms_map = machine__kernel_map(&kallsyms, type); | |
75 | ||
76 | sym = map__find_symbol_by_name(kallsyms_map, ref_reloc_sym.name, NULL); | |
77 | if (sym == NULL) { | |
78 | pr_debug("dso__find_symbol_by_name "); | |
79 | goto out; | |
80 | } | |
81 | ||
82 | ref_reloc_sym.addr = sym->start; | |
83 | ||
84 | /* | |
85 | * Step 5: | |
86 | * | |
87 | * Now repeat step 2, this time for the vmlinux file we'll auto-locate. | |
88 | */ | |
89 | if (machine__create_kernel_maps(&vmlinux) < 0) { | |
90 | pr_debug("machine__create_kernel_maps "); | |
91 | goto out; | |
92 | } | |
93 | ||
94 | vmlinux_map = machine__kernel_map(&vmlinux, type); | |
95 | map__kmap(vmlinux_map)->ref_reloc_sym = &ref_reloc_sym; | |
96 | ||
97 | /* | |
98 | * Step 6: | |
99 | * | |
100 | * Locate a vmlinux file in the vmlinux path that has a buildid that | |
101 | * matches the one of the running kernel. | |
102 | * | |
103 | * While doing that look if we find the ref reloc symbol, if we find it | |
104 | * we'll have its ref_reloc_symbol.unrelocated_addr and then | |
105 | * maps__reloc_vmlinux will notice and set proper ->[un]map_ip routines | |
106 | * to fixup the symbols. | |
107 | */ | |
108 | if (machine__load_vmlinux_path(&vmlinux, type, | |
109 | vmlinux_matches_kallsyms_filter) <= 0) { | |
110 | pr_debug("machine__load_vmlinux_path "); | |
111 | goto out; | |
112 | } | |
113 | ||
114 | err = 0; | |
115 | /* | |
116 | * Step 7: | |
117 | * | |
118 | * Now look at the symbols in the vmlinux DSO and check if we find all of them | |
119 | * in the kallsyms dso. For the ones that are in both, check its names and | |
120 | * end addresses too. | |
121 | */ | |
122 | for (nd = rb_first(&vmlinux_map->dso->symbols[type]); nd; nd = rb_next(nd)) { | |
d3678758 ACM |
123 | struct symbol *pair, *first_pair; |
124 | bool backwards = true; | |
1c6a800c ACM |
125 | |
126 | sym = rb_entry(nd, struct symbol, rb_node); | |
d3678758 ACM |
127 | |
128 | if (sym->start == sym->end) | |
129 | continue; | |
130 | ||
131 | first_pair = machine__find_kernel_symbol(&kallsyms, type, sym->start, NULL, NULL); | |
132 | pair = first_pair; | |
1c6a800c ACM |
133 | |
134 | if (pair && pair->start == sym->start) { | |
135 | next_pair: | |
136 | if (strcmp(sym->name, pair->name) == 0) { | |
137 | /* | |
138 | * kallsyms don't have the symbol end, so we | |
139 | * set that by using the next symbol start - 1, | |
140 | * in some cases we get this up to a page | |
141 | * wrong, trace_kmalloc when I was developing | |
142 | * this code was one such example, 2106 bytes | |
143 | * off the real size. More than that and we | |
144 | * _really_ have a problem. | |
145 | */ | |
146 | s64 skew = sym->end - pair->end; | |
147 | if (llabs(skew) < page_size) | |
148 | continue; | |
149 | ||
9486aa38 | 150 | pr_debug("%#" PRIx64 ": diff end addr for %s v: %#" PRIx64 " k: %#" PRIx64 "\n", |
1c6a800c ACM |
151 | sym->start, sym->name, sym->end, pair->end); |
152 | } else { | |
d3678758 ACM |
153 | struct rb_node *nnd; |
154 | detour: | |
155 | nnd = backwards ? rb_prev(&pair->rb_node) : | |
156 | rb_next(&pair->rb_node); | |
1c6a800c ACM |
157 | if (nnd) { |
158 | struct symbol *next = rb_entry(nnd, struct symbol, rb_node); | |
159 | ||
160 | if (next->start == sym->start) { | |
161 | pair = next; | |
162 | goto next_pair; | |
163 | } | |
164 | } | |
d3678758 ACM |
165 | |
166 | if (backwards) { | |
167 | backwards = false; | |
168 | pair = first_pair; | |
169 | goto detour; | |
170 | } | |
171 | ||
9486aa38 | 172 | pr_debug("%#" PRIx64 ": diff name v: %s k: %s\n", |
1c6a800c ACM |
173 | sym->start, sym->name, pair->name); |
174 | } | |
175 | } else | |
9486aa38 | 176 | pr_debug("%#" PRIx64 ": %s not on kallsyms\n", sym->start, sym->name); |
1c6a800c ACM |
177 | |
178 | err = -1; | |
179 | } | |
180 | ||
181 | if (!verbose) | |
182 | goto out; | |
183 | ||
184 | pr_info("Maps only in vmlinux:\n"); | |
185 | ||
186 | for (nd = rb_first(&vmlinux.kmaps.maps[type]); nd; nd = rb_next(nd)) { | |
187 | struct map *pos = rb_entry(nd, struct map, rb_node), *pair; | |
188 | /* | |
189 | * If it is the kernel, kallsyms is always "[kernel.kallsyms]", while | |
190 | * the kernel will have the path for the vmlinux file being used, | |
191 | * so use the short name, less descriptive but the same ("[kernel]" in | |
192 | * both cases. | |
193 | */ | |
194 | pair = map_groups__find_by_name(&kallsyms.kmaps, type, | |
195 | (pos->dso->kernel ? | |
196 | pos->dso->short_name : | |
197 | pos->dso->name)); | |
198 | if (pair) | |
199 | pair->priv = 1; | |
200 | else | |
201 | map__fprintf(pos, stderr); | |
202 | } | |
203 | ||
204 | pr_info("Maps in vmlinux with a different name in kallsyms:\n"); | |
205 | ||
206 | for (nd = rb_first(&vmlinux.kmaps.maps[type]); nd; nd = rb_next(nd)) { | |
207 | struct map *pos = rb_entry(nd, struct map, rb_node), *pair; | |
208 | ||
209 | pair = map_groups__find(&kallsyms.kmaps, type, pos->start); | |
210 | if (pair == NULL || pair->priv) | |
211 | continue; | |
212 | ||
213 | if (pair->start == pos->start) { | |
214 | pair->priv = 1; | |
9486aa38 | 215 | pr_info(" %" PRIx64 "-%" PRIx64 " %" PRIx64 " %s in kallsyms as", |
1c6a800c ACM |
216 | pos->start, pos->end, pos->pgoff, pos->dso->name); |
217 | if (pos->pgoff != pair->pgoff || pos->end != pair->end) | |
9486aa38 | 218 | pr_info(": \n*%" PRIx64 "-%" PRIx64 " %" PRIx64 "", |
1c6a800c ACM |
219 | pair->start, pair->end, pair->pgoff); |
220 | pr_info(" %s\n", pair->dso->name); | |
221 | pair->priv = 1; | |
222 | } | |
223 | } | |
224 | ||
225 | pr_info("Maps only in kallsyms:\n"); | |
226 | ||
227 | for (nd = rb_first(&kallsyms.kmaps.maps[type]); | |
228 | nd; nd = rb_next(nd)) { | |
229 | struct map *pos = rb_entry(nd, struct map, rb_node); | |
230 | ||
231 | if (!pos->priv) | |
232 | map__fprintf(pos, stderr); | |
233 | } | |
234 | out: | |
235 | return err; | |
236 | } | |
237 | ||
0252208e | 238 | #include "util/cpumap.h" |
d854861c ACM |
239 | #include "util/evsel.h" |
240 | #include <sys/types.h> | |
241 | ||
de5fa3a8 | 242 | static int trace_event__id(const char *evname) |
d854861c ACM |
243 | { |
244 | char *filename; | |
245 | int err = -1, fd; | |
246 | ||
247 | if (asprintf(&filename, | |
248 | "/sys/kernel/debug/tracing/events/syscalls/%s/id", | |
de5fa3a8 | 249 | evname) < 0) |
d854861c ACM |
250 | return -1; |
251 | ||
252 | fd = open(filename, O_RDONLY); | |
253 | if (fd >= 0) { | |
254 | char id[16]; | |
255 | if (read(fd, id, sizeof(id)) > 0) | |
256 | err = atoi(id); | |
257 | close(fd); | |
258 | } | |
259 | ||
260 | free(filename); | |
261 | return err; | |
262 | } | |
263 | ||
264 | static int test__open_syscall_event(void) | |
265 | { | |
266 | int err = -1, fd; | |
267 | struct thread_map *threads; | |
268 | struct perf_evsel *evsel; | |
23a2f3ab | 269 | struct perf_event_attr attr; |
d854861c ACM |
270 | unsigned int nr_open_calls = 111, i; |
271 | int id = trace_event__id("sys_enter_open"); | |
272 | ||
273 | if (id < 0) { | |
454a3bbe | 274 | pr_debug("is debugfs mounted on /sys/kernel/debug?\n"); |
d854861c ACM |
275 | return -1; |
276 | } | |
277 | ||
278 | threads = thread_map__new(-1, getpid()); | |
279 | if (threads == NULL) { | |
454a3bbe | 280 | pr_debug("thread_map__new\n"); |
d854861c ACM |
281 | return -1; |
282 | } | |
283 | ||
23a2f3ab LM |
284 | memset(&attr, 0, sizeof(attr)); |
285 | attr.type = PERF_TYPE_TRACEPOINT; | |
286 | attr.config = id; | |
287 | evsel = perf_evsel__new(&attr, 0); | |
d854861c | 288 | if (evsel == NULL) { |
454a3bbe | 289 | pr_debug("perf_evsel__new\n"); |
d854861c ACM |
290 | goto out_thread_map_delete; |
291 | } | |
292 | ||
9d04f178 | 293 | if (perf_evsel__open_per_thread(evsel, threads, false, false) < 0) { |
454a3bbe ACM |
294 | pr_debug("failed to open counter: %s, " |
295 | "tweak /proc/sys/kernel/perf_event_paranoid?\n", | |
296 | strerror(errno)); | |
d854861c ACM |
297 | goto out_evsel_delete; |
298 | } | |
299 | ||
300 | for (i = 0; i < nr_open_calls; ++i) { | |
301 | fd = open("/etc/passwd", O_RDONLY); | |
302 | close(fd); | |
303 | } | |
304 | ||
305 | if (perf_evsel__read_on_cpu(evsel, 0, 0) < 0) { | |
454a3bbe | 306 | pr_debug("perf_evsel__open_read_on_cpu\n"); |
d854861c ACM |
307 | goto out_close_fd; |
308 | } | |
309 | ||
454a3bbe | 310 | if (evsel->counts->cpu[0].val != nr_open_calls) { |
9486aa38 | 311 | pr_debug("perf_evsel__read_on_cpu: expected to intercept %d calls, got %" PRIu64 "\n", |
d854861c | 312 | nr_open_calls, evsel->counts->cpu[0].val); |
454a3bbe ACM |
313 | goto out_close_fd; |
314 | } | |
d854861c ACM |
315 | |
316 | err = 0; | |
317 | out_close_fd: | |
318 | perf_evsel__close_fd(evsel, 1, threads->nr); | |
319 | out_evsel_delete: | |
320 | perf_evsel__delete(evsel); | |
321 | out_thread_map_delete: | |
322 | thread_map__delete(threads); | |
323 | return err; | |
324 | } | |
325 | ||
0252208e ACM |
326 | #include <sched.h> |
327 | ||
328 | static int test__open_syscall_event_on_all_cpus(void) | |
329 | { | |
330 | int err = -1, fd, cpu; | |
331 | struct thread_map *threads; | |
332 | struct cpu_map *cpus; | |
333 | struct perf_evsel *evsel; | |
334 | struct perf_event_attr attr; | |
335 | unsigned int nr_open_calls = 111, i; | |
57b84e53 | 336 | cpu_set_t cpu_set; |
0252208e ACM |
337 | int id = trace_event__id("sys_enter_open"); |
338 | ||
339 | if (id < 0) { | |
340 | pr_debug("is debugfs mounted on /sys/kernel/debug?\n"); | |
341 | return -1; | |
342 | } | |
343 | ||
344 | threads = thread_map__new(-1, getpid()); | |
345 | if (threads == NULL) { | |
346 | pr_debug("thread_map__new\n"); | |
347 | return -1; | |
348 | } | |
349 | ||
350 | cpus = cpu_map__new(NULL); | |
98d77b78 HP |
351 | if (cpus == NULL) { |
352 | pr_debug("cpu_map__new\n"); | |
353 | goto out_thread_map_delete; | |
0252208e ACM |
354 | } |
355 | ||
0252208e | 356 | |
57b84e53 | 357 | CPU_ZERO(&cpu_set); |
0252208e ACM |
358 | |
359 | memset(&attr, 0, sizeof(attr)); | |
360 | attr.type = PERF_TYPE_TRACEPOINT; | |
361 | attr.config = id; | |
362 | evsel = perf_evsel__new(&attr, 0); | |
363 | if (evsel == NULL) { | |
364 | pr_debug("perf_evsel__new\n"); | |
57b84e53 | 365 | goto out_thread_map_delete; |
0252208e ACM |
366 | } |
367 | ||
9d04f178 | 368 | if (perf_evsel__open(evsel, cpus, threads, false, false) < 0) { |
0252208e ACM |
369 | pr_debug("failed to open counter: %s, " |
370 | "tweak /proc/sys/kernel/perf_event_paranoid?\n", | |
371 | strerror(errno)); | |
372 | goto out_evsel_delete; | |
373 | } | |
374 | ||
375 | for (cpu = 0; cpu < cpus->nr; ++cpu) { | |
376 | unsigned int ncalls = nr_open_calls + cpu; | |
57b84e53 ACM |
377 | /* |
378 | * XXX eventually lift this restriction in a way that | |
379 | * keeps perf building on older glibc installations | |
380 | * without CPU_ALLOC. 1024 cpus in 2010 still seems | |
381 | * a reasonable upper limit tho :-) | |
382 | */ | |
383 | if (cpus->map[cpu] >= CPU_SETSIZE) { | |
384 | pr_debug("Ignoring CPU %d\n", cpus->map[cpu]); | |
385 | continue; | |
386 | } | |
0252208e | 387 | |
57b84e53 ACM |
388 | CPU_SET(cpus->map[cpu], &cpu_set); |
389 | if (sched_setaffinity(0, sizeof(cpu_set), &cpu_set) < 0) { | |
ffb5e0fb HP |
390 | pr_debug("sched_setaffinity() failed on CPU %d: %s ", |
391 | cpus->map[cpu], | |
392 | strerror(errno)); | |
393 | goto out_close_fd; | |
394 | } | |
0252208e ACM |
395 | for (i = 0; i < ncalls; ++i) { |
396 | fd = open("/etc/passwd", O_RDONLY); | |
397 | close(fd); | |
398 | } | |
57b84e53 | 399 | CPU_CLR(cpus->map[cpu], &cpu_set); |
0252208e ACM |
400 | } |
401 | ||
402 | /* | |
403 | * Here we need to explicitely preallocate the counts, as if | |
404 | * we use the auto allocation it will allocate just for 1 cpu, | |
405 | * as we start by cpu 0. | |
406 | */ | |
407 | if (perf_evsel__alloc_counts(evsel, cpus->nr) < 0) { | |
408 | pr_debug("perf_evsel__alloc_counts(ncpus=%d)\n", cpus->nr); | |
409 | goto out_close_fd; | |
410 | } | |
411 | ||
d2af9687 ACM |
412 | err = 0; |
413 | ||
0252208e ACM |
414 | for (cpu = 0; cpu < cpus->nr; ++cpu) { |
415 | unsigned int expected; | |
416 | ||
57b84e53 ACM |
417 | if (cpus->map[cpu] >= CPU_SETSIZE) |
418 | continue; | |
419 | ||
0252208e ACM |
420 | if (perf_evsel__read_on_cpu(evsel, cpu, 0) < 0) { |
421 | pr_debug("perf_evsel__open_read_on_cpu\n"); | |
d2af9687 ACM |
422 | err = -1; |
423 | break; | |
0252208e ACM |
424 | } |
425 | ||
426 | expected = nr_open_calls + cpu; | |
427 | if (evsel->counts->cpu[cpu].val != expected) { | |
9486aa38 | 428 | pr_debug("perf_evsel__read_on_cpu: expected to intercept %d calls on cpu %d, got %" PRIu64 "\n", |
ffb5e0fb | 429 | expected, cpus->map[cpu], evsel->counts->cpu[cpu].val); |
d2af9687 | 430 | err = -1; |
0252208e ACM |
431 | } |
432 | } | |
433 | ||
0252208e ACM |
434 | out_close_fd: |
435 | perf_evsel__close_fd(evsel, 1, threads->nr); | |
436 | out_evsel_delete: | |
437 | perf_evsel__delete(evsel); | |
0252208e ACM |
438 | out_thread_map_delete: |
439 | thread_map__delete(threads); | |
440 | return err; | |
441 | } | |
442 | ||
de5fa3a8 ACM |
443 | /* |
444 | * This test will generate random numbers of calls to some getpid syscalls, | |
445 | * then establish an mmap for a group of events that are created to monitor | |
446 | * the syscalls. | |
447 | * | |
448 | * It will receive the events, using mmap, use its PERF_SAMPLE_ID generated | |
449 | * sample.id field to map back to its respective perf_evsel instance. | |
450 | * | |
451 | * Then it checks if the number of syscalls reported as perf events by | |
452 | * the kernel corresponds to the number of syscalls made. | |
453 | */ | |
454 | static int test__basic_mmap(void) | |
455 | { | |
456 | int err = -1; | |
8115d60c | 457 | union perf_event *event; |
de5fa3a8 | 458 | struct thread_map *threads; |
de5fa3a8 ACM |
459 | struct cpu_map *cpus; |
460 | struct perf_evlist *evlist; | |
461 | struct perf_event_attr attr = { | |
462 | .type = PERF_TYPE_TRACEPOINT, | |
463 | .read_format = PERF_FORMAT_ID, | |
464 | .sample_type = PERF_SAMPLE_ID, | |
465 | .watermark = 0, | |
466 | }; | |
467 | cpu_set_t cpu_set; | |
468 | const char *syscall_names[] = { "getsid", "getppid", "getpgrp", | |
469 | "getpgid", }; | |
470 | pid_t (*syscalls[])(void) = { (void *)getsid, getppid, getpgrp, | |
471 | (void*)getpgid }; | |
472 | #define nsyscalls ARRAY_SIZE(syscall_names) | |
473 | int ids[nsyscalls]; | |
474 | unsigned int nr_events[nsyscalls], | |
475 | expected_nr_events[nsyscalls], i, j; | |
476 | struct perf_evsel *evsels[nsyscalls], *evsel; | |
477 | ||
478 | for (i = 0; i < nsyscalls; ++i) { | |
479 | char name[64]; | |
480 | ||
481 | snprintf(name, sizeof(name), "sys_enter_%s", syscall_names[i]); | |
482 | ids[i] = trace_event__id(name); | |
483 | if (ids[i] < 0) { | |
484 | pr_debug("Is debugfs mounted on /sys/kernel/debug?\n"); | |
485 | return -1; | |
486 | } | |
487 | nr_events[i] = 0; | |
488 | expected_nr_events[i] = random() % 257; | |
489 | } | |
490 | ||
491 | threads = thread_map__new(-1, getpid()); | |
492 | if (threads == NULL) { | |
493 | pr_debug("thread_map__new\n"); | |
494 | return -1; | |
495 | } | |
496 | ||
497 | cpus = cpu_map__new(NULL); | |
54489c18 HP |
498 | if (cpus == NULL) { |
499 | pr_debug("cpu_map__new\n"); | |
de5fa3a8 ACM |
500 | goto out_free_threads; |
501 | } | |
502 | ||
503 | CPU_ZERO(&cpu_set); | |
504 | CPU_SET(cpus->map[0], &cpu_set); | |
505 | sched_setaffinity(0, sizeof(cpu_set), &cpu_set); | |
506 | if (sched_setaffinity(0, sizeof(cpu_set), &cpu_set) < 0) { | |
507 | pr_debug("sched_setaffinity() failed on CPU %d: %s ", | |
508 | cpus->map[0], strerror(errno)); | |
509 | goto out_free_cpus; | |
510 | } | |
511 | ||
512 | evlist = perf_evlist__new(); | |
54489c18 | 513 | if (evlist == NULL) { |
de5fa3a8 ACM |
514 | pr_debug("perf_evlist__new\n"); |
515 | goto out_free_cpus; | |
516 | } | |
517 | ||
518 | /* anonymous union fields, can't be initialized above */ | |
519 | attr.wakeup_events = 1; | |
520 | attr.sample_period = 1; | |
521 | ||
de5fa3a8 ACM |
522 | for (i = 0; i < nsyscalls; ++i) { |
523 | attr.config = ids[i]; | |
524 | evsels[i] = perf_evsel__new(&attr, i); | |
525 | if (evsels[i] == NULL) { | |
526 | pr_debug("perf_evsel__new\n"); | |
527 | goto out_free_evlist; | |
528 | } | |
529 | ||
530 | perf_evlist__add(evlist, evsels[i]); | |
531 | ||
532 | if (perf_evsel__open(evsels[i], cpus, threads, false, false) < 0) { | |
533 | pr_debug("failed to open counter: %s, " | |
534 | "tweak /proc/sys/kernel/perf_event_paranoid?\n", | |
535 | strerror(errno)); | |
536 | goto out_close_fd; | |
537 | } | |
538 | } | |
539 | ||
540 | if (perf_evlist__mmap(evlist, cpus, threads, 128, true) < 0) { | |
541 | pr_debug("failed to mmap events: %d (%s)\n", errno, | |
542 | strerror(errno)); | |
543 | goto out_close_fd; | |
544 | } | |
545 | ||
546 | for (i = 0; i < nsyscalls; ++i) | |
547 | for (j = 0; j < expected_nr_events[i]; ++j) { | |
548 | int foo = syscalls[i](); | |
549 | ++foo; | |
550 | } | |
551 | ||
552 | while ((event = perf_evlist__read_on_cpu(evlist, 0)) != NULL) { | |
8d50e5b4 | 553 | struct perf_sample sample; |
de5fa3a8 ACM |
554 | |
555 | if (event->header.type != PERF_RECORD_SAMPLE) { | |
556 | pr_debug("unexpected %s event\n", | |
8115d60c | 557 | perf_event__name(event->header.type)); |
de5fa3a8 ACM |
558 | goto out_munmap; |
559 | } | |
560 | ||
8115d60c | 561 | perf_event__parse_sample(event, attr.sample_type, false, &sample); |
de5fa3a8 ACM |
562 | evsel = perf_evlist__id2evsel(evlist, sample.id); |
563 | if (evsel == NULL) { | |
564 | pr_debug("event with id %" PRIu64 | |
565 | " doesn't map to an evsel\n", sample.id); | |
566 | goto out_munmap; | |
567 | } | |
568 | nr_events[evsel->idx]++; | |
569 | } | |
570 | ||
571 | list_for_each_entry(evsel, &evlist->entries, node) { | |
572 | if (nr_events[evsel->idx] != expected_nr_events[evsel->idx]) { | |
573 | pr_debug("expected %d %s events, got %d\n", | |
574 | expected_nr_events[evsel->idx], | |
575 | event_name(evsel), nr_events[evsel->idx]); | |
576 | goto out_munmap; | |
577 | } | |
578 | } | |
579 | ||
580 | err = 0; | |
581 | out_munmap: | |
582 | perf_evlist__munmap(evlist, 1); | |
583 | out_close_fd: | |
584 | for (i = 0; i < nsyscalls; ++i) | |
585 | perf_evsel__close_fd(evsels[i], 1, threads->nr); | |
586 | out_free_evlist: | |
587 | perf_evlist__delete(evlist); | |
588 | out_free_cpus: | |
589 | cpu_map__delete(cpus); | |
590 | out_free_threads: | |
591 | thread_map__delete(threads); | |
592 | return err; | |
593 | #undef nsyscalls | |
594 | } | |
595 | ||
1c6a800c ACM |
596 | static struct test { |
597 | const char *desc; | |
598 | int (*func)(void); | |
599 | } tests[] = { | |
600 | { | |
601 | .desc = "vmlinux symtab matches kallsyms", | |
602 | .func = test__vmlinux_matches_kallsyms, | |
603 | }, | |
d854861c ACM |
604 | { |
605 | .desc = "detect open syscall event", | |
606 | .func = test__open_syscall_event, | |
607 | }, | |
0252208e ACM |
608 | { |
609 | .desc = "detect open syscall event on all cpus", | |
610 | .func = test__open_syscall_event_on_all_cpus, | |
611 | }, | |
de5fa3a8 ACM |
612 | { |
613 | .desc = "read samples using the mmap interface", | |
614 | .func = test__basic_mmap, | |
615 | }, | |
1c6a800c ACM |
616 | { |
617 | .func = NULL, | |
618 | }, | |
619 | }; | |
620 | ||
621 | static int __cmd_test(void) | |
622 | { | |
623 | int i = 0; | |
624 | ||
625 | page_size = sysconf(_SC_PAGE_SIZE); | |
626 | ||
627 | while (tests[i].func) { | |
628 | int err; | |
629 | pr_info("%2d: %s:", i + 1, tests[i].desc); | |
630 | pr_debug("\n--- start ---\n"); | |
631 | err = tests[i].func(); | |
632 | pr_debug("---- end ----\n%s:", tests[i].desc); | |
633 | pr_info(" %s\n", err ? "FAILED!\n" : "Ok"); | |
634 | ++i; | |
635 | } | |
636 | ||
637 | return 0; | |
638 | } | |
639 | ||
640 | static const char * const test_usage[] = { | |
641 | "perf test [<options>]", | |
642 | NULL, | |
643 | }; | |
644 | ||
645 | static const struct option test_options[] = { | |
8035458f | 646 | OPT_INTEGER('v', "verbose", &verbose, |
1c6a800c ACM |
647 | "be more verbose (show symbol address, etc)"), |
648 | OPT_END() | |
649 | }; | |
650 | ||
651 | int cmd_test(int argc, const char **argv, const char *prefix __used) | |
652 | { | |
653 | argc = parse_options(argc, argv, test_options, test_usage, 0); | |
654 | if (argc) | |
655 | usage_with_options(test_usage, test_options); | |
656 | ||
657 | symbol_conf.priv_size = sizeof(int); | |
658 | symbol_conf.sort_by_name = true; | |
659 | symbol_conf.try_vmlinux_path = true; | |
660 | ||
661 | if (symbol__init() < 0) | |
662 | return -1; | |
663 | ||
664 | setup_pager(); | |
665 | ||
666 | return __cmd_test(); | |
667 | } |