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" |
13b62567 | 15 | #include "../../include/linux/hw_breakpoint.h" |
1c6a800c ACM |
16 | |
17 | static long page_size; | |
18 | ||
19 | static int vmlinux_matches_kallsyms_filter(struct map *map __used, struct symbol *sym) | |
20 | { | |
21 | bool *visited = symbol__priv(sym); | |
22 | *visited = true; | |
23 | return 0; | |
24 | } | |
25 | ||
26 | static int test__vmlinux_matches_kallsyms(void) | |
27 | { | |
28 | int err = -1; | |
29 | struct rb_node *nd; | |
30 | struct symbol *sym; | |
31 | struct map *kallsyms_map, *vmlinux_map; | |
32 | struct machine kallsyms, vmlinux; | |
33 | enum map_type type = MAP__FUNCTION; | |
34 | struct ref_reloc_sym ref_reloc_sym = { .name = "_stext", }; | |
35 | ||
36 | /* | |
37 | * Step 1: | |
38 | * | |
39 | * Init the machines that will hold kernel, modules obtained from | |
40 | * both vmlinux + .ko files and from /proc/kallsyms split by modules. | |
41 | */ | |
42 | machine__init(&kallsyms, "", HOST_KERNEL_ID); | |
43 | machine__init(&vmlinux, "", HOST_KERNEL_ID); | |
44 | ||
45 | /* | |
46 | * Step 2: | |
47 | * | |
48 | * Create the kernel maps for kallsyms and the DSO where we will then | |
49 | * load /proc/kallsyms. Also create the modules maps from /proc/modules | |
50 | * and find the .ko files that match them in /lib/modules/`uname -r`/. | |
51 | */ | |
52 | if (machine__create_kernel_maps(&kallsyms) < 0) { | |
53 | pr_debug("machine__create_kernel_maps "); | |
54 | return -1; | |
55 | } | |
56 | ||
57 | /* | |
58 | * Step 3: | |
59 | * | |
60 | * Load and split /proc/kallsyms into multiple maps, one per module. | |
61 | */ | |
62 | if (machine__load_kallsyms(&kallsyms, "/proc/kallsyms", type, NULL) <= 0) { | |
63 | pr_debug("dso__load_kallsyms "); | |
64 | goto out; | |
65 | } | |
66 | ||
67 | /* | |
68 | * Step 4: | |
69 | * | |
70 | * kallsyms will be internally on demand sorted by name so that we can | |
71 | * find the reference relocation * symbol, i.e. the symbol we will use | |
72 | * to see if the running kernel was relocated by checking if it has the | |
73 | * same value in the vmlinux file we load. | |
74 | */ | |
75 | kallsyms_map = machine__kernel_map(&kallsyms, type); | |
76 | ||
77 | sym = map__find_symbol_by_name(kallsyms_map, ref_reloc_sym.name, NULL); | |
78 | if (sym == NULL) { | |
79 | pr_debug("dso__find_symbol_by_name "); | |
80 | goto out; | |
81 | } | |
82 | ||
83 | ref_reloc_sym.addr = sym->start; | |
84 | ||
85 | /* | |
86 | * Step 5: | |
87 | * | |
88 | * Now repeat step 2, this time for the vmlinux file we'll auto-locate. | |
89 | */ | |
90 | if (machine__create_kernel_maps(&vmlinux) < 0) { | |
91 | pr_debug("machine__create_kernel_maps "); | |
92 | goto out; | |
93 | } | |
94 | ||
95 | vmlinux_map = machine__kernel_map(&vmlinux, type); | |
96 | map__kmap(vmlinux_map)->ref_reloc_sym = &ref_reloc_sym; | |
97 | ||
98 | /* | |
99 | * Step 6: | |
100 | * | |
101 | * Locate a vmlinux file in the vmlinux path that has a buildid that | |
102 | * matches the one of the running kernel. | |
103 | * | |
104 | * While doing that look if we find the ref reloc symbol, if we find it | |
105 | * we'll have its ref_reloc_symbol.unrelocated_addr and then | |
106 | * maps__reloc_vmlinux will notice and set proper ->[un]map_ip routines | |
107 | * to fixup the symbols. | |
108 | */ | |
109 | if (machine__load_vmlinux_path(&vmlinux, type, | |
110 | vmlinux_matches_kallsyms_filter) <= 0) { | |
111 | pr_debug("machine__load_vmlinux_path "); | |
112 | goto out; | |
113 | } | |
114 | ||
115 | err = 0; | |
116 | /* | |
117 | * Step 7: | |
118 | * | |
119 | * Now look at the symbols in the vmlinux DSO and check if we find all of them | |
120 | * in the kallsyms dso. For the ones that are in both, check its names and | |
121 | * end addresses too. | |
122 | */ | |
123 | for (nd = rb_first(&vmlinux_map->dso->symbols[type]); nd; nd = rb_next(nd)) { | |
d3678758 ACM |
124 | struct symbol *pair, *first_pair; |
125 | bool backwards = true; | |
1c6a800c ACM |
126 | |
127 | sym = rb_entry(nd, struct symbol, rb_node); | |
d3678758 ACM |
128 | |
129 | if (sym->start == sym->end) | |
130 | continue; | |
131 | ||
132 | first_pair = machine__find_kernel_symbol(&kallsyms, type, sym->start, NULL, NULL); | |
133 | pair = first_pair; | |
1c6a800c ACM |
134 | |
135 | if (pair && pair->start == sym->start) { | |
136 | next_pair: | |
137 | if (strcmp(sym->name, pair->name) == 0) { | |
138 | /* | |
139 | * kallsyms don't have the symbol end, so we | |
140 | * set that by using the next symbol start - 1, | |
141 | * in some cases we get this up to a page | |
142 | * wrong, trace_kmalloc when I was developing | |
143 | * this code was one such example, 2106 bytes | |
144 | * off the real size. More than that and we | |
145 | * _really_ have a problem. | |
146 | */ | |
147 | s64 skew = sym->end - pair->end; | |
148 | if (llabs(skew) < page_size) | |
149 | continue; | |
150 | ||
9486aa38 | 151 | pr_debug("%#" PRIx64 ": diff end addr for %s v: %#" PRIx64 " k: %#" PRIx64 "\n", |
1c6a800c ACM |
152 | sym->start, sym->name, sym->end, pair->end); |
153 | } else { | |
d3678758 ACM |
154 | struct rb_node *nnd; |
155 | detour: | |
156 | nnd = backwards ? rb_prev(&pair->rb_node) : | |
157 | rb_next(&pair->rb_node); | |
1c6a800c ACM |
158 | if (nnd) { |
159 | struct symbol *next = rb_entry(nnd, struct symbol, rb_node); | |
160 | ||
161 | if (next->start == sym->start) { | |
162 | pair = next; | |
163 | goto next_pair; | |
164 | } | |
165 | } | |
d3678758 ACM |
166 | |
167 | if (backwards) { | |
168 | backwards = false; | |
169 | pair = first_pair; | |
170 | goto detour; | |
171 | } | |
172 | ||
9486aa38 | 173 | pr_debug("%#" PRIx64 ": diff name v: %s k: %s\n", |
1c6a800c ACM |
174 | sym->start, sym->name, pair->name); |
175 | } | |
176 | } else | |
9486aa38 | 177 | pr_debug("%#" PRIx64 ": %s not on kallsyms\n", sym->start, sym->name); |
1c6a800c ACM |
178 | |
179 | err = -1; | |
180 | } | |
181 | ||
182 | if (!verbose) | |
183 | goto out; | |
184 | ||
185 | pr_info("Maps only in vmlinux:\n"); | |
186 | ||
187 | for (nd = rb_first(&vmlinux.kmaps.maps[type]); nd; nd = rb_next(nd)) { | |
188 | struct map *pos = rb_entry(nd, struct map, rb_node), *pair; | |
189 | /* | |
190 | * If it is the kernel, kallsyms is always "[kernel.kallsyms]", while | |
191 | * the kernel will have the path for the vmlinux file being used, | |
192 | * so use the short name, less descriptive but the same ("[kernel]" in | |
193 | * both cases. | |
194 | */ | |
195 | pair = map_groups__find_by_name(&kallsyms.kmaps, type, | |
196 | (pos->dso->kernel ? | |
197 | pos->dso->short_name : | |
198 | pos->dso->name)); | |
199 | if (pair) | |
200 | pair->priv = 1; | |
201 | else | |
202 | map__fprintf(pos, stderr); | |
203 | } | |
204 | ||
205 | pr_info("Maps in vmlinux with a different name in kallsyms:\n"); | |
206 | ||
207 | for (nd = rb_first(&vmlinux.kmaps.maps[type]); nd; nd = rb_next(nd)) { | |
208 | struct map *pos = rb_entry(nd, struct map, rb_node), *pair; | |
209 | ||
210 | pair = map_groups__find(&kallsyms.kmaps, type, pos->start); | |
211 | if (pair == NULL || pair->priv) | |
212 | continue; | |
213 | ||
214 | if (pair->start == pos->start) { | |
215 | pair->priv = 1; | |
9486aa38 | 216 | pr_info(" %" PRIx64 "-%" PRIx64 " %" PRIx64 " %s in kallsyms as", |
1c6a800c ACM |
217 | pos->start, pos->end, pos->pgoff, pos->dso->name); |
218 | if (pos->pgoff != pair->pgoff || pos->end != pair->end) | |
9486aa38 | 219 | pr_info(": \n*%" PRIx64 "-%" PRIx64 " %" PRIx64 "", |
1c6a800c ACM |
220 | pair->start, pair->end, pair->pgoff); |
221 | pr_info(" %s\n", pair->dso->name); | |
222 | pair->priv = 1; | |
223 | } | |
224 | } | |
225 | ||
226 | pr_info("Maps only in kallsyms:\n"); | |
227 | ||
228 | for (nd = rb_first(&kallsyms.kmaps.maps[type]); | |
229 | nd; nd = rb_next(nd)) { | |
230 | struct map *pos = rb_entry(nd, struct map, rb_node); | |
231 | ||
232 | if (!pos->priv) | |
233 | map__fprintf(pos, stderr); | |
234 | } | |
235 | out: | |
236 | return err; | |
237 | } | |
238 | ||
0252208e | 239 | #include "util/cpumap.h" |
d854861c ACM |
240 | #include "util/evsel.h" |
241 | #include <sys/types.h> | |
242 | ||
de5fa3a8 | 243 | static int trace_event__id(const char *evname) |
d854861c ACM |
244 | { |
245 | char *filename; | |
246 | int err = -1, fd; | |
247 | ||
248 | if (asprintf(&filename, | |
baf040a0 JO |
249 | "%s/syscalls/%s/id", |
250 | debugfs_path, evname) < 0) | |
d854861c ACM |
251 | return -1; |
252 | ||
253 | fd = open(filename, O_RDONLY); | |
254 | if (fd >= 0) { | |
255 | char id[16]; | |
256 | if (read(fd, id, sizeof(id)) > 0) | |
257 | err = atoi(id); | |
258 | close(fd); | |
259 | } | |
260 | ||
261 | free(filename); | |
262 | return err; | |
263 | } | |
264 | ||
265 | static int test__open_syscall_event(void) | |
266 | { | |
267 | int err = -1, fd; | |
268 | struct thread_map *threads; | |
269 | struct perf_evsel *evsel; | |
23a2f3ab | 270 | struct perf_event_attr attr; |
d854861c ACM |
271 | unsigned int nr_open_calls = 111, i; |
272 | int id = trace_event__id("sys_enter_open"); | |
273 | ||
274 | if (id < 0) { | |
454a3bbe | 275 | pr_debug("is debugfs mounted on /sys/kernel/debug?\n"); |
d854861c ACM |
276 | return -1; |
277 | } | |
278 | ||
279 | threads = thread_map__new(-1, getpid()); | |
280 | if (threads == NULL) { | |
454a3bbe | 281 | pr_debug("thread_map__new\n"); |
d854861c ACM |
282 | return -1; |
283 | } | |
284 | ||
23a2f3ab LM |
285 | memset(&attr, 0, sizeof(attr)); |
286 | attr.type = PERF_TYPE_TRACEPOINT; | |
287 | attr.config = id; | |
288 | evsel = perf_evsel__new(&attr, 0); | |
d854861c | 289 | if (evsel == NULL) { |
454a3bbe | 290 | pr_debug("perf_evsel__new\n"); |
d854861c ACM |
291 | goto out_thread_map_delete; |
292 | } | |
293 | ||
5d2cd909 | 294 | if (perf_evsel__open_per_thread(evsel, threads, false) < 0) { |
454a3bbe ACM |
295 | pr_debug("failed to open counter: %s, " |
296 | "tweak /proc/sys/kernel/perf_event_paranoid?\n", | |
297 | strerror(errno)); | |
d854861c ACM |
298 | goto out_evsel_delete; |
299 | } | |
300 | ||
301 | for (i = 0; i < nr_open_calls; ++i) { | |
302 | fd = open("/etc/passwd", O_RDONLY); | |
303 | close(fd); | |
304 | } | |
305 | ||
306 | if (perf_evsel__read_on_cpu(evsel, 0, 0) < 0) { | |
5d2cd909 | 307 | pr_debug("perf_evsel__read_on_cpu\n"); |
d854861c ACM |
308 | goto out_close_fd; |
309 | } | |
310 | ||
454a3bbe | 311 | if (evsel->counts->cpu[0].val != nr_open_calls) { |
9486aa38 | 312 | pr_debug("perf_evsel__read_on_cpu: expected to intercept %d calls, got %" PRIu64 "\n", |
d854861c | 313 | nr_open_calls, evsel->counts->cpu[0].val); |
454a3bbe ACM |
314 | goto out_close_fd; |
315 | } | |
d854861c ACM |
316 | |
317 | err = 0; | |
318 | out_close_fd: | |
319 | perf_evsel__close_fd(evsel, 1, threads->nr); | |
320 | out_evsel_delete: | |
321 | perf_evsel__delete(evsel); | |
322 | out_thread_map_delete: | |
323 | thread_map__delete(threads); | |
324 | return err; | |
325 | } | |
326 | ||
0252208e ACM |
327 | #include <sched.h> |
328 | ||
329 | static int test__open_syscall_event_on_all_cpus(void) | |
330 | { | |
331 | int err = -1, fd, cpu; | |
332 | struct thread_map *threads; | |
333 | struct cpu_map *cpus; | |
334 | struct perf_evsel *evsel; | |
335 | struct perf_event_attr attr; | |
336 | unsigned int nr_open_calls = 111, i; | |
57b84e53 | 337 | cpu_set_t cpu_set; |
0252208e ACM |
338 | int id = trace_event__id("sys_enter_open"); |
339 | ||
340 | if (id < 0) { | |
341 | pr_debug("is debugfs mounted on /sys/kernel/debug?\n"); | |
342 | return -1; | |
343 | } | |
344 | ||
345 | threads = thread_map__new(-1, getpid()); | |
346 | if (threads == NULL) { | |
347 | pr_debug("thread_map__new\n"); | |
348 | return -1; | |
349 | } | |
350 | ||
351 | cpus = cpu_map__new(NULL); | |
98d77b78 HP |
352 | if (cpus == NULL) { |
353 | pr_debug("cpu_map__new\n"); | |
354 | goto out_thread_map_delete; | |
0252208e ACM |
355 | } |
356 | ||
0252208e | 357 | |
57b84e53 | 358 | CPU_ZERO(&cpu_set); |
0252208e ACM |
359 | |
360 | memset(&attr, 0, sizeof(attr)); | |
361 | attr.type = PERF_TYPE_TRACEPOINT; | |
362 | attr.config = id; | |
363 | evsel = perf_evsel__new(&attr, 0); | |
364 | if (evsel == NULL) { | |
365 | pr_debug("perf_evsel__new\n"); | |
57b84e53 | 366 | goto out_thread_map_delete; |
0252208e ACM |
367 | } |
368 | ||
5d2cd909 | 369 | if (perf_evsel__open(evsel, cpus, threads, false) < 0) { |
0252208e ACM |
370 | pr_debug("failed to open counter: %s, " |
371 | "tweak /proc/sys/kernel/perf_event_paranoid?\n", | |
372 | strerror(errno)); | |
373 | goto out_evsel_delete; | |
374 | } | |
375 | ||
376 | for (cpu = 0; cpu < cpus->nr; ++cpu) { | |
377 | unsigned int ncalls = nr_open_calls + cpu; | |
57b84e53 ACM |
378 | /* |
379 | * XXX eventually lift this restriction in a way that | |
380 | * keeps perf building on older glibc installations | |
381 | * without CPU_ALLOC. 1024 cpus in 2010 still seems | |
382 | * a reasonable upper limit tho :-) | |
383 | */ | |
384 | if (cpus->map[cpu] >= CPU_SETSIZE) { | |
385 | pr_debug("Ignoring CPU %d\n", cpus->map[cpu]); | |
386 | continue; | |
387 | } | |
0252208e | 388 | |
57b84e53 ACM |
389 | CPU_SET(cpus->map[cpu], &cpu_set); |
390 | if (sched_setaffinity(0, sizeof(cpu_set), &cpu_set) < 0) { | |
ffb5e0fb HP |
391 | pr_debug("sched_setaffinity() failed on CPU %d: %s ", |
392 | cpus->map[cpu], | |
393 | strerror(errno)); | |
394 | goto out_close_fd; | |
395 | } | |
0252208e ACM |
396 | for (i = 0; i < ncalls; ++i) { |
397 | fd = open("/etc/passwd", O_RDONLY); | |
398 | close(fd); | |
399 | } | |
57b84e53 | 400 | CPU_CLR(cpus->map[cpu], &cpu_set); |
0252208e ACM |
401 | } |
402 | ||
403 | /* | |
404 | * Here we need to explicitely preallocate the counts, as if | |
405 | * we use the auto allocation it will allocate just for 1 cpu, | |
406 | * as we start by cpu 0. | |
407 | */ | |
408 | if (perf_evsel__alloc_counts(evsel, cpus->nr) < 0) { | |
409 | pr_debug("perf_evsel__alloc_counts(ncpus=%d)\n", cpus->nr); | |
410 | goto out_close_fd; | |
411 | } | |
412 | ||
d2af9687 ACM |
413 | err = 0; |
414 | ||
0252208e ACM |
415 | for (cpu = 0; cpu < cpus->nr; ++cpu) { |
416 | unsigned int expected; | |
417 | ||
57b84e53 ACM |
418 | if (cpus->map[cpu] >= CPU_SETSIZE) |
419 | continue; | |
420 | ||
0252208e | 421 | if (perf_evsel__read_on_cpu(evsel, cpu, 0) < 0) { |
5d2cd909 | 422 | pr_debug("perf_evsel__read_on_cpu\n"); |
d2af9687 ACM |
423 | err = -1; |
424 | break; | |
0252208e ACM |
425 | } |
426 | ||
427 | expected = nr_open_calls + cpu; | |
428 | if (evsel->counts->cpu[cpu].val != expected) { | |
9486aa38 | 429 | pr_debug("perf_evsel__read_on_cpu: expected to intercept %d calls on cpu %d, got %" PRIu64 "\n", |
ffb5e0fb | 430 | expected, cpus->map[cpu], evsel->counts->cpu[cpu].val); |
d2af9687 | 431 | err = -1; |
0252208e ACM |
432 | } |
433 | } | |
434 | ||
0252208e ACM |
435 | out_close_fd: |
436 | perf_evsel__close_fd(evsel, 1, threads->nr); | |
437 | out_evsel_delete: | |
438 | perf_evsel__delete(evsel); | |
0252208e ACM |
439 | out_thread_map_delete: |
440 | thread_map__delete(threads); | |
441 | return err; | |
442 | } | |
443 | ||
de5fa3a8 ACM |
444 | /* |
445 | * This test will generate random numbers of calls to some getpid syscalls, | |
446 | * then establish an mmap for a group of events that are created to monitor | |
447 | * the syscalls. | |
448 | * | |
449 | * It will receive the events, using mmap, use its PERF_SAMPLE_ID generated | |
450 | * sample.id field to map back to its respective perf_evsel instance. | |
451 | * | |
452 | * Then it checks if the number of syscalls reported as perf events by | |
453 | * the kernel corresponds to the number of syscalls made. | |
454 | */ | |
455 | static int test__basic_mmap(void) | |
456 | { | |
457 | int err = -1; | |
8115d60c | 458 | union perf_event *event; |
de5fa3a8 | 459 | struct thread_map *threads; |
de5fa3a8 ACM |
460 | struct cpu_map *cpus; |
461 | struct perf_evlist *evlist; | |
462 | struct perf_event_attr attr = { | |
463 | .type = PERF_TYPE_TRACEPOINT, | |
464 | .read_format = PERF_FORMAT_ID, | |
465 | .sample_type = PERF_SAMPLE_ID, | |
466 | .watermark = 0, | |
467 | }; | |
468 | cpu_set_t cpu_set; | |
469 | const char *syscall_names[] = { "getsid", "getppid", "getpgrp", | |
470 | "getpgid", }; | |
471 | pid_t (*syscalls[])(void) = { (void *)getsid, getppid, getpgrp, | |
472 | (void*)getpgid }; | |
473 | #define nsyscalls ARRAY_SIZE(syscall_names) | |
474 | int ids[nsyscalls]; | |
475 | unsigned int nr_events[nsyscalls], | |
476 | expected_nr_events[nsyscalls], i, j; | |
477 | struct perf_evsel *evsels[nsyscalls], *evsel; | |
c2a70653 | 478 | int sample_size = __perf_evsel__sample_size(attr.sample_type); |
de5fa3a8 ACM |
479 | |
480 | for (i = 0; i < nsyscalls; ++i) { | |
481 | char name[64]; | |
482 | ||
483 | snprintf(name, sizeof(name), "sys_enter_%s", syscall_names[i]); | |
484 | ids[i] = trace_event__id(name); | |
485 | if (ids[i] < 0) { | |
486 | pr_debug("Is debugfs mounted on /sys/kernel/debug?\n"); | |
487 | return -1; | |
488 | } | |
489 | nr_events[i] = 0; | |
490 | expected_nr_events[i] = random() % 257; | |
491 | } | |
492 | ||
493 | threads = thread_map__new(-1, getpid()); | |
494 | if (threads == NULL) { | |
495 | pr_debug("thread_map__new\n"); | |
496 | return -1; | |
497 | } | |
498 | ||
499 | cpus = cpu_map__new(NULL); | |
54489c18 HP |
500 | if (cpus == NULL) { |
501 | pr_debug("cpu_map__new\n"); | |
de5fa3a8 ACM |
502 | goto out_free_threads; |
503 | } | |
504 | ||
505 | CPU_ZERO(&cpu_set); | |
506 | CPU_SET(cpus->map[0], &cpu_set); | |
507 | sched_setaffinity(0, sizeof(cpu_set), &cpu_set); | |
508 | if (sched_setaffinity(0, sizeof(cpu_set), &cpu_set) < 0) { | |
509 | pr_debug("sched_setaffinity() failed on CPU %d: %s ", | |
510 | cpus->map[0], strerror(errno)); | |
511 | goto out_free_cpus; | |
512 | } | |
513 | ||
7e2ed097 | 514 | evlist = perf_evlist__new(cpus, threads); |
54489c18 | 515 | if (evlist == NULL) { |
de5fa3a8 ACM |
516 | pr_debug("perf_evlist__new\n"); |
517 | goto out_free_cpus; | |
518 | } | |
519 | ||
520 | /* anonymous union fields, can't be initialized above */ | |
521 | attr.wakeup_events = 1; | |
522 | attr.sample_period = 1; | |
523 | ||
de5fa3a8 ACM |
524 | for (i = 0; i < nsyscalls; ++i) { |
525 | attr.config = ids[i]; | |
526 | evsels[i] = perf_evsel__new(&attr, i); | |
527 | if (evsels[i] == NULL) { | |
528 | pr_debug("perf_evsel__new\n"); | |
529 | goto out_free_evlist; | |
530 | } | |
531 | ||
532 | perf_evlist__add(evlist, evsels[i]); | |
533 | ||
5d2cd909 | 534 | if (perf_evsel__open(evsels[i], cpus, threads, false) < 0) { |
de5fa3a8 ACM |
535 | pr_debug("failed to open counter: %s, " |
536 | "tweak /proc/sys/kernel/perf_event_paranoid?\n", | |
537 | strerror(errno)); | |
538 | goto out_close_fd; | |
539 | } | |
540 | } | |
541 | ||
7e2ed097 | 542 | if (perf_evlist__mmap(evlist, 128, true) < 0) { |
de5fa3a8 ACM |
543 | pr_debug("failed to mmap events: %d (%s)\n", errno, |
544 | strerror(errno)); | |
545 | goto out_close_fd; | |
546 | } | |
547 | ||
548 | for (i = 0; i < nsyscalls; ++i) | |
549 | for (j = 0; j < expected_nr_events[i]; ++j) { | |
550 | int foo = syscalls[i](); | |
551 | ++foo; | |
552 | } | |
553 | ||
aece948f | 554 | while ((event = perf_evlist__mmap_read(evlist, 0)) != NULL) { |
8d50e5b4 | 555 | struct perf_sample sample; |
de5fa3a8 ACM |
556 | |
557 | if (event->header.type != PERF_RECORD_SAMPLE) { | |
558 | pr_debug("unexpected %s event\n", | |
8115d60c | 559 | perf_event__name(event->header.type)); |
de5fa3a8 ACM |
560 | goto out_munmap; |
561 | } | |
562 | ||
5538beca | 563 | err = perf_event__parse_sample(event, attr.sample_type, sample_size, |
936be503 | 564 | false, &sample, false); |
5538beca FW |
565 | if (err) { |
566 | pr_err("Can't parse sample, err = %d\n", err); | |
567 | goto out_munmap; | |
568 | } | |
569 | ||
de5fa3a8 ACM |
570 | evsel = perf_evlist__id2evsel(evlist, sample.id); |
571 | if (evsel == NULL) { | |
572 | pr_debug("event with id %" PRIu64 | |
573 | " doesn't map to an evsel\n", sample.id); | |
574 | goto out_munmap; | |
575 | } | |
576 | nr_events[evsel->idx]++; | |
577 | } | |
578 | ||
579 | list_for_each_entry(evsel, &evlist->entries, node) { | |
580 | if (nr_events[evsel->idx] != expected_nr_events[evsel->idx]) { | |
581 | pr_debug("expected %d %s events, got %d\n", | |
582 | expected_nr_events[evsel->idx], | |
583 | event_name(evsel), nr_events[evsel->idx]); | |
584 | goto out_munmap; | |
585 | } | |
586 | } | |
587 | ||
588 | err = 0; | |
589 | out_munmap: | |
7e2ed097 | 590 | perf_evlist__munmap(evlist); |
de5fa3a8 ACM |
591 | out_close_fd: |
592 | for (i = 0; i < nsyscalls; ++i) | |
593 | perf_evsel__close_fd(evsels[i], 1, threads->nr); | |
594 | out_free_evlist: | |
595 | perf_evlist__delete(evlist); | |
596 | out_free_cpus: | |
597 | cpu_map__delete(cpus); | |
598 | out_free_threads: | |
599 | thread_map__delete(threads); | |
600 | return err; | |
601 | #undef nsyscalls | |
602 | } | |
603 | ||
13b62567 JO |
604 | #define TEST_ASSERT_VAL(text, cond) \ |
605 | do { \ | |
606 | if (!cond) { \ | |
607 | pr_debug("FAILED %s:%d %s\n", __FILE__, __LINE__, text); \ | |
608 | return -1; \ | |
609 | } \ | |
610 | } while (0) | |
611 | ||
612 | static int test__checkevent_tracepoint(struct perf_evlist *evlist) | |
613 | { | |
614 | struct perf_evsel *evsel = list_entry(evlist->entries.next, | |
615 | struct perf_evsel, node); | |
616 | ||
617 | TEST_ASSERT_VAL("wrong number of entries", 1 == evlist->nr_entries); | |
618 | TEST_ASSERT_VAL("wrong type", PERF_TYPE_TRACEPOINT == evsel->attr.type); | |
619 | TEST_ASSERT_VAL("wrong sample_type", | |
620 | (PERF_SAMPLE_RAW | PERF_SAMPLE_TIME | PERF_SAMPLE_CPU) == | |
621 | evsel->attr.sample_type); | |
622 | TEST_ASSERT_VAL("wrong sample_period", 1 == evsel->attr.sample_period); | |
623 | return 0; | |
624 | } | |
625 | ||
626 | static int test__checkevent_tracepoint_multi(struct perf_evlist *evlist) | |
627 | { | |
628 | struct perf_evsel *evsel; | |
629 | ||
630 | TEST_ASSERT_VAL("wrong number of entries", evlist->nr_entries > 1); | |
631 | ||
632 | list_for_each_entry(evsel, &evlist->entries, node) { | |
633 | TEST_ASSERT_VAL("wrong type", | |
634 | PERF_TYPE_TRACEPOINT == evsel->attr.type); | |
635 | TEST_ASSERT_VAL("wrong sample_type", | |
636 | (PERF_SAMPLE_RAW | PERF_SAMPLE_TIME | PERF_SAMPLE_CPU) | |
637 | == evsel->attr.sample_type); | |
638 | TEST_ASSERT_VAL("wrong sample_period", | |
639 | 1 == evsel->attr.sample_period); | |
640 | } | |
641 | return 0; | |
642 | } | |
643 | ||
644 | static int test__checkevent_raw(struct perf_evlist *evlist) | |
645 | { | |
646 | struct perf_evsel *evsel = list_entry(evlist->entries.next, | |
647 | struct perf_evsel, node); | |
648 | ||
649 | TEST_ASSERT_VAL("wrong number of entries", 1 == evlist->nr_entries); | |
650 | TEST_ASSERT_VAL("wrong type", PERF_TYPE_RAW == evsel->attr.type); | |
651 | TEST_ASSERT_VAL("wrong config", 1 == evsel->attr.config); | |
652 | return 0; | |
653 | } | |
654 | ||
655 | static int test__checkevent_numeric(struct perf_evlist *evlist) | |
656 | { | |
657 | struct perf_evsel *evsel = list_entry(evlist->entries.next, | |
658 | struct perf_evsel, node); | |
659 | ||
660 | TEST_ASSERT_VAL("wrong number of entries", 1 == evlist->nr_entries); | |
661 | TEST_ASSERT_VAL("wrong type", 1 == evsel->attr.type); | |
662 | TEST_ASSERT_VAL("wrong config", 1 == evsel->attr.config); | |
663 | return 0; | |
664 | } | |
665 | ||
666 | static int test__checkevent_symbolic_name(struct perf_evlist *evlist) | |
667 | { | |
668 | struct perf_evsel *evsel = list_entry(evlist->entries.next, | |
669 | struct perf_evsel, node); | |
670 | ||
671 | TEST_ASSERT_VAL("wrong number of entries", 1 == evlist->nr_entries); | |
672 | TEST_ASSERT_VAL("wrong type", PERF_TYPE_HARDWARE == evsel->attr.type); | |
673 | TEST_ASSERT_VAL("wrong config", | |
674 | PERF_COUNT_HW_INSTRUCTIONS == evsel->attr.config); | |
675 | return 0; | |
676 | } | |
677 | ||
678 | static int test__checkevent_symbolic_alias(struct perf_evlist *evlist) | |
679 | { | |
680 | struct perf_evsel *evsel = list_entry(evlist->entries.next, | |
681 | struct perf_evsel, node); | |
682 | ||
683 | TEST_ASSERT_VAL("wrong number of entries", 1 == evlist->nr_entries); | |
684 | TEST_ASSERT_VAL("wrong type", PERF_TYPE_SOFTWARE == evsel->attr.type); | |
685 | TEST_ASSERT_VAL("wrong config", | |
686 | PERF_COUNT_SW_PAGE_FAULTS == evsel->attr.config); | |
687 | return 0; | |
688 | } | |
689 | ||
690 | static int test__checkevent_genhw(struct perf_evlist *evlist) | |
691 | { | |
692 | struct perf_evsel *evsel = list_entry(evlist->entries.next, | |
693 | struct perf_evsel, node); | |
694 | ||
695 | TEST_ASSERT_VAL("wrong number of entries", 1 == evlist->nr_entries); | |
696 | TEST_ASSERT_VAL("wrong type", PERF_TYPE_HW_CACHE == evsel->attr.type); | |
697 | TEST_ASSERT_VAL("wrong config", (1 << 16) == evsel->attr.config); | |
698 | return 0; | |
699 | } | |
700 | ||
701 | static int test__checkevent_breakpoint(struct perf_evlist *evlist) | |
702 | { | |
703 | struct perf_evsel *evsel = list_entry(evlist->entries.next, | |
704 | struct perf_evsel, node); | |
705 | ||
706 | TEST_ASSERT_VAL("wrong number of entries", 1 == evlist->nr_entries); | |
707 | TEST_ASSERT_VAL("wrong type", PERF_TYPE_BREAKPOINT == evsel->attr.type); | |
708 | TEST_ASSERT_VAL("wrong config", 0 == evsel->attr.config); | |
709 | TEST_ASSERT_VAL("wrong bp_type", (HW_BREAKPOINT_R | HW_BREAKPOINT_W) == | |
710 | evsel->attr.bp_type); | |
711 | TEST_ASSERT_VAL("wrong bp_len", HW_BREAKPOINT_LEN_4 == | |
712 | evsel->attr.bp_len); | |
713 | return 0; | |
714 | } | |
715 | ||
716 | static int test__checkevent_breakpoint_x(struct perf_evlist *evlist) | |
717 | { | |
718 | struct perf_evsel *evsel = list_entry(evlist->entries.next, | |
719 | struct perf_evsel, node); | |
720 | ||
721 | TEST_ASSERT_VAL("wrong number of entries", 1 == evlist->nr_entries); | |
722 | TEST_ASSERT_VAL("wrong type", PERF_TYPE_BREAKPOINT == evsel->attr.type); | |
723 | TEST_ASSERT_VAL("wrong config", 0 == evsel->attr.config); | |
724 | TEST_ASSERT_VAL("wrong bp_type", | |
725 | HW_BREAKPOINT_X == evsel->attr.bp_type); | |
726 | TEST_ASSERT_VAL("wrong bp_len", sizeof(long) == evsel->attr.bp_len); | |
727 | return 0; | |
728 | } | |
729 | ||
730 | static int test__checkevent_breakpoint_r(struct perf_evlist *evlist) | |
731 | { | |
732 | struct perf_evsel *evsel = list_entry(evlist->entries.next, | |
733 | struct perf_evsel, node); | |
734 | ||
735 | TEST_ASSERT_VAL("wrong number of entries", 1 == evlist->nr_entries); | |
736 | TEST_ASSERT_VAL("wrong type", | |
737 | PERF_TYPE_BREAKPOINT == evsel->attr.type); | |
738 | TEST_ASSERT_VAL("wrong config", 0 == evsel->attr.config); | |
739 | TEST_ASSERT_VAL("wrong bp_type", | |
740 | HW_BREAKPOINT_R == evsel->attr.bp_type); | |
741 | TEST_ASSERT_VAL("wrong bp_len", | |
742 | HW_BREAKPOINT_LEN_4 == evsel->attr.bp_len); | |
743 | return 0; | |
744 | } | |
745 | ||
746 | static int test__checkevent_breakpoint_w(struct perf_evlist *evlist) | |
747 | { | |
748 | struct perf_evsel *evsel = list_entry(evlist->entries.next, | |
749 | struct perf_evsel, node); | |
750 | ||
751 | TEST_ASSERT_VAL("wrong number of entries", 1 == evlist->nr_entries); | |
752 | TEST_ASSERT_VAL("wrong type", | |
753 | PERF_TYPE_BREAKPOINT == evsel->attr.type); | |
754 | TEST_ASSERT_VAL("wrong config", 0 == evsel->attr.config); | |
755 | TEST_ASSERT_VAL("wrong bp_type", | |
756 | HW_BREAKPOINT_W == evsel->attr.bp_type); | |
757 | TEST_ASSERT_VAL("wrong bp_len", | |
758 | HW_BREAKPOINT_LEN_4 == evsel->attr.bp_len); | |
759 | return 0; | |
760 | } | |
761 | ||
762 | static struct test__event_st { | |
763 | const char *name; | |
764 | __u32 type; | |
765 | int (*check)(struct perf_evlist *evlist); | |
766 | } test__events[] = { | |
767 | { | |
768 | .name = "syscalls:sys_enter_open", | |
769 | .check = test__checkevent_tracepoint, | |
770 | }, | |
771 | { | |
772 | .name = "syscalls:*", | |
773 | .check = test__checkevent_tracepoint_multi, | |
774 | }, | |
775 | { | |
776 | .name = "r1", | |
777 | .check = test__checkevent_raw, | |
778 | }, | |
779 | { | |
780 | .name = "1:1", | |
781 | .check = test__checkevent_numeric, | |
782 | }, | |
783 | { | |
784 | .name = "instructions", | |
785 | .check = test__checkevent_symbolic_name, | |
786 | }, | |
787 | { | |
788 | .name = "faults", | |
789 | .check = test__checkevent_symbolic_alias, | |
790 | }, | |
791 | { | |
792 | .name = "L1-dcache-load-miss", | |
793 | .check = test__checkevent_genhw, | |
794 | }, | |
795 | { | |
796 | .name = "mem:0", | |
797 | .check = test__checkevent_breakpoint, | |
798 | }, | |
799 | { | |
800 | .name = "mem:0:x", | |
801 | .check = test__checkevent_breakpoint_x, | |
802 | }, | |
803 | { | |
804 | .name = "mem:0:r", | |
805 | .check = test__checkevent_breakpoint_r, | |
806 | }, | |
807 | { | |
808 | .name = "mem:0:w", | |
809 | .check = test__checkevent_breakpoint_w, | |
810 | }, | |
811 | }; | |
812 | ||
813 | #define TEST__EVENTS_CNT (sizeof(test__events) / sizeof(struct test__event_st)) | |
814 | ||
815 | static int test__parse_events(void) | |
816 | { | |
817 | struct perf_evlist *evlist; | |
818 | u_int i; | |
819 | int ret = 0; | |
820 | ||
821 | for (i = 0; i < TEST__EVENTS_CNT; i++) { | |
822 | struct test__event_st *e = &test__events[i]; | |
823 | ||
824 | evlist = perf_evlist__new(NULL, NULL); | |
825 | if (evlist == NULL) | |
826 | break; | |
827 | ||
828 | ret = parse_events(evlist, e->name, 0); | |
829 | if (ret) { | |
830 | pr_debug("failed to parse event '%s', err %d\n", | |
831 | e->name, ret); | |
832 | break; | |
833 | } | |
834 | ||
835 | ret = e->check(evlist); | |
836 | if (ret) | |
837 | break; | |
838 | ||
839 | perf_evlist__delete(evlist); | |
840 | } | |
841 | ||
842 | return ret; | |
843 | } | |
1c6a800c ACM |
844 | static struct test { |
845 | const char *desc; | |
846 | int (*func)(void); | |
847 | } tests[] = { | |
848 | { | |
849 | .desc = "vmlinux symtab matches kallsyms", | |
850 | .func = test__vmlinux_matches_kallsyms, | |
851 | }, | |
d854861c ACM |
852 | { |
853 | .desc = "detect open syscall event", | |
854 | .func = test__open_syscall_event, | |
855 | }, | |
0252208e ACM |
856 | { |
857 | .desc = "detect open syscall event on all cpus", | |
858 | .func = test__open_syscall_event_on_all_cpus, | |
859 | }, | |
de5fa3a8 ACM |
860 | { |
861 | .desc = "read samples using the mmap interface", | |
862 | .func = test__basic_mmap, | |
863 | }, | |
13b62567 JO |
864 | { |
865 | .desc = "parse events tests", | |
866 | .func = test__parse_events, | |
867 | }, | |
1c6a800c ACM |
868 | { |
869 | .func = NULL, | |
870 | }, | |
871 | }; | |
872 | ||
873 | static int __cmd_test(void) | |
874 | { | |
875 | int i = 0; | |
876 | ||
877 | page_size = sysconf(_SC_PAGE_SIZE); | |
878 | ||
879 | while (tests[i].func) { | |
880 | int err; | |
881 | pr_info("%2d: %s:", i + 1, tests[i].desc); | |
882 | pr_debug("\n--- start ---\n"); | |
883 | err = tests[i].func(); | |
884 | pr_debug("---- end ----\n%s:", tests[i].desc); | |
885 | pr_info(" %s\n", err ? "FAILED!\n" : "Ok"); | |
886 | ++i; | |
887 | } | |
888 | ||
889 | return 0; | |
890 | } | |
891 | ||
892 | static const char * const test_usage[] = { | |
893 | "perf test [<options>]", | |
894 | NULL, | |
895 | }; | |
896 | ||
897 | static const struct option test_options[] = { | |
8035458f | 898 | OPT_INTEGER('v', "verbose", &verbose, |
1c6a800c ACM |
899 | "be more verbose (show symbol address, etc)"), |
900 | OPT_END() | |
901 | }; | |
902 | ||
903 | int cmd_test(int argc, const char **argv, const char *prefix __used) | |
904 | { | |
905 | argc = parse_options(argc, argv, test_options, test_usage, 0); | |
906 | if (argc) | |
907 | usage_with_options(test_usage, test_options); | |
908 | ||
909 | symbol_conf.priv_size = sizeof(int); | |
910 | symbol_conf.sort_by_name = true; | |
911 | symbol_conf.try_vmlinux_path = true; | |
912 | ||
913 | if (symbol__init() < 0) | |
914 | return -1; | |
915 | ||
916 | setup_pager(); | |
917 | ||
918 | return __cmd_test(); | |
919 | } |