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" | |
ebf294bf | 10 | #include "util/debugfs.h" |
de5fa3a8 | 11 | #include "util/evlist.h" |
1c6a800c | 12 | #include "util/parse-options.h" |
de5fa3a8 | 13 | #include "util/parse-events.h" |
1c6a800c | 14 | #include "util/symbol.h" |
fd78260b | 15 | #include "util/thread_map.h" |
cd82a32e | 16 | #include "util/pmu.h" |
13b62567 | 17 | #include "../../include/linux/hw_breakpoint.h" |
1c6a800c | 18 | |
08aa0d1f PZ |
19 | #include <sys/mman.h> |
20 | ||
1c6a800c ACM |
21 | static int vmlinux_matches_kallsyms_filter(struct map *map __used, struct symbol *sym) |
22 | { | |
23 | bool *visited = symbol__priv(sym); | |
24 | *visited = true; | |
25 | return 0; | |
26 | } | |
27 | ||
28 | static int test__vmlinux_matches_kallsyms(void) | |
29 | { | |
30 | int err = -1; | |
31 | struct rb_node *nd; | |
32 | struct symbol *sym; | |
33 | struct map *kallsyms_map, *vmlinux_map; | |
34 | struct machine kallsyms, vmlinux; | |
35 | enum map_type type = MAP__FUNCTION; | |
e60770a0 | 36 | long page_size = sysconf(_SC_PAGE_SIZE); |
1c6a800c ACM |
37 | struct ref_reloc_sym ref_reloc_sym = { .name = "_stext", }; |
38 | ||
39 | /* | |
40 | * Step 1: | |
41 | * | |
42 | * Init the machines that will hold kernel, modules obtained from | |
43 | * both vmlinux + .ko files and from /proc/kallsyms split by modules. | |
44 | */ | |
45 | machine__init(&kallsyms, "", HOST_KERNEL_ID); | |
46 | machine__init(&vmlinux, "", HOST_KERNEL_ID); | |
47 | ||
48 | /* | |
49 | * Step 2: | |
50 | * | |
51 | * Create the kernel maps for kallsyms and the DSO where we will then | |
52 | * load /proc/kallsyms. Also create the modules maps from /proc/modules | |
53 | * and find the .ko files that match them in /lib/modules/`uname -r`/. | |
54 | */ | |
55 | if (machine__create_kernel_maps(&kallsyms) < 0) { | |
56 | pr_debug("machine__create_kernel_maps "); | |
57 | return -1; | |
58 | } | |
59 | ||
60 | /* | |
61 | * Step 3: | |
62 | * | |
63 | * Load and split /proc/kallsyms into multiple maps, one per module. | |
64 | */ | |
65 | if (machine__load_kallsyms(&kallsyms, "/proc/kallsyms", type, NULL) <= 0) { | |
66 | pr_debug("dso__load_kallsyms "); | |
67 | goto out; | |
68 | } | |
69 | ||
70 | /* | |
71 | * Step 4: | |
72 | * | |
73 | * kallsyms will be internally on demand sorted by name so that we can | |
74 | * find the reference relocation * symbol, i.e. the symbol we will use | |
75 | * to see if the running kernel was relocated by checking if it has the | |
76 | * same value in the vmlinux file we load. | |
77 | */ | |
78 | kallsyms_map = machine__kernel_map(&kallsyms, type); | |
79 | ||
80 | sym = map__find_symbol_by_name(kallsyms_map, ref_reloc_sym.name, NULL); | |
81 | if (sym == NULL) { | |
82 | pr_debug("dso__find_symbol_by_name "); | |
83 | goto out; | |
84 | } | |
85 | ||
86 | ref_reloc_sym.addr = sym->start; | |
87 | ||
88 | /* | |
89 | * Step 5: | |
90 | * | |
91 | * Now repeat step 2, this time for the vmlinux file we'll auto-locate. | |
92 | */ | |
93 | if (machine__create_kernel_maps(&vmlinux) < 0) { | |
94 | pr_debug("machine__create_kernel_maps "); | |
95 | goto out; | |
96 | } | |
97 | ||
98 | vmlinux_map = machine__kernel_map(&vmlinux, type); | |
99 | map__kmap(vmlinux_map)->ref_reloc_sym = &ref_reloc_sym; | |
100 | ||
101 | /* | |
102 | * Step 6: | |
103 | * | |
104 | * Locate a vmlinux file in the vmlinux path that has a buildid that | |
105 | * matches the one of the running kernel. | |
106 | * | |
107 | * While doing that look if we find the ref reloc symbol, if we find it | |
108 | * we'll have its ref_reloc_symbol.unrelocated_addr and then | |
109 | * maps__reloc_vmlinux will notice and set proper ->[un]map_ip routines | |
110 | * to fixup the symbols. | |
111 | */ | |
112 | if (machine__load_vmlinux_path(&vmlinux, type, | |
113 | vmlinux_matches_kallsyms_filter) <= 0) { | |
114 | pr_debug("machine__load_vmlinux_path "); | |
115 | goto out; | |
116 | } | |
117 | ||
118 | err = 0; | |
119 | /* | |
120 | * Step 7: | |
121 | * | |
122 | * Now look at the symbols in the vmlinux DSO and check if we find all of them | |
123 | * in the kallsyms dso. For the ones that are in both, check its names and | |
124 | * end addresses too. | |
125 | */ | |
126 | for (nd = rb_first(&vmlinux_map->dso->symbols[type]); nd; nd = rb_next(nd)) { | |
d3678758 ACM |
127 | struct symbol *pair, *first_pair; |
128 | bool backwards = true; | |
1c6a800c ACM |
129 | |
130 | sym = rb_entry(nd, struct symbol, rb_node); | |
d3678758 ACM |
131 | |
132 | if (sym->start == sym->end) | |
133 | continue; | |
134 | ||
135 | first_pair = machine__find_kernel_symbol(&kallsyms, type, sym->start, NULL, NULL); | |
136 | pair = first_pair; | |
1c6a800c ACM |
137 | |
138 | if (pair && pair->start == sym->start) { | |
139 | next_pair: | |
140 | if (strcmp(sym->name, pair->name) == 0) { | |
141 | /* | |
142 | * kallsyms don't have the symbol end, so we | |
143 | * set that by using the next symbol start - 1, | |
144 | * in some cases we get this up to a page | |
145 | * wrong, trace_kmalloc when I was developing | |
146 | * this code was one such example, 2106 bytes | |
147 | * off the real size. More than that and we | |
148 | * _really_ have a problem. | |
149 | */ | |
150 | s64 skew = sym->end - pair->end; | |
151 | if (llabs(skew) < page_size) | |
152 | continue; | |
153 | ||
9486aa38 | 154 | pr_debug("%#" PRIx64 ": diff end addr for %s v: %#" PRIx64 " k: %#" PRIx64 "\n", |
1c6a800c ACM |
155 | sym->start, sym->name, sym->end, pair->end); |
156 | } else { | |
d3678758 ACM |
157 | struct rb_node *nnd; |
158 | detour: | |
159 | nnd = backwards ? rb_prev(&pair->rb_node) : | |
160 | rb_next(&pair->rb_node); | |
1c6a800c ACM |
161 | if (nnd) { |
162 | struct symbol *next = rb_entry(nnd, struct symbol, rb_node); | |
163 | ||
164 | if (next->start == sym->start) { | |
165 | pair = next; | |
166 | goto next_pair; | |
167 | } | |
168 | } | |
d3678758 ACM |
169 | |
170 | if (backwards) { | |
171 | backwards = false; | |
172 | pair = first_pair; | |
173 | goto detour; | |
174 | } | |
175 | ||
9486aa38 | 176 | pr_debug("%#" PRIx64 ": diff name v: %s k: %s\n", |
1c6a800c ACM |
177 | sym->start, sym->name, pair->name); |
178 | } | |
179 | } else | |
9486aa38 | 180 | pr_debug("%#" PRIx64 ": %s not on kallsyms\n", sym->start, sym->name); |
1c6a800c ACM |
181 | |
182 | err = -1; | |
183 | } | |
184 | ||
185 | if (!verbose) | |
186 | goto out; | |
187 | ||
188 | pr_info("Maps only in vmlinux:\n"); | |
189 | ||
190 | for (nd = rb_first(&vmlinux.kmaps.maps[type]); nd; nd = rb_next(nd)) { | |
191 | struct map *pos = rb_entry(nd, struct map, rb_node), *pair; | |
192 | /* | |
193 | * If it is the kernel, kallsyms is always "[kernel.kallsyms]", while | |
194 | * the kernel will have the path for the vmlinux file being used, | |
195 | * so use the short name, less descriptive but the same ("[kernel]" in | |
196 | * both cases. | |
197 | */ | |
198 | pair = map_groups__find_by_name(&kallsyms.kmaps, type, | |
199 | (pos->dso->kernel ? | |
200 | pos->dso->short_name : | |
201 | pos->dso->name)); | |
202 | if (pair) | |
203 | pair->priv = 1; | |
204 | else | |
205 | map__fprintf(pos, stderr); | |
206 | } | |
207 | ||
208 | pr_info("Maps in vmlinux with a different name in kallsyms:\n"); | |
209 | ||
210 | for (nd = rb_first(&vmlinux.kmaps.maps[type]); nd; nd = rb_next(nd)) { | |
211 | struct map *pos = rb_entry(nd, struct map, rb_node), *pair; | |
212 | ||
213 | pair = map_groups__find(&kallsyms.kmaps, type, pos->start); | |
214 | if (pair == NULL || pair->priv) | |
215 | continue; | |
216 | ||
217 | if (pair->start == pos->start) { | |
218 | pair->priv = 1; | |
9486aa38 | 219 | pr_info(" %" PRIx64 "-%" PRIx64 " %" PRIx64 " %s in kallsyms as", |
1c6a800c ACM |
220 | pos->start, pos->end, pos->pgoff, pos->dso->name); |
221 | if (pos->pgoff != pair->pgoff || pos->end != pair->end) | |
9486aa38 | 222 | pr_info(": \n*%" PRIx64 "-%" PRIx64 " %" PRIx64 "", |
1c6a800c ACM |
223 | pair->start, pair->end, pair->pgoff); |
224 | pr_info(" %s\n", pair->dso->name); | |
225 | pair->priv = 1; | |
226 | } | |
227 | } | |
228 | ||
229 | pr_info("Maps only in kallsyms:\n"); | |
230 | ||
231 | for (nd = rb_first(&kallsyms.kmaps.maps[type]); | |
232 | nd; nd = rb_next(nd)) { | |
233 | struct map *pos = rb_entry(nd, struct map, rb_node); | |
234 | ||
235 | if (!pos->priv) | |
236 | map__fprintf(pos, stderr); | |
237 | } | |
238 | out: | |
239 | return err; | |
240 | } | |
241 | ||
0252208e | 242 | #include "util/cpumap.h" |
d854861c ACM |
243 | #include "util/evsel.h" |
244 | #include <sys/types.h> | |
245 | ||
de5fa3a8 | 246 | static int trace_event__id(const char *evname) |
d854861c ACM |
247 | { |
248 | char *filename; | |
249 | int err = -1, fd; | |
250 | ||
251 | if (asprintf(&filename, | |
baf040a0 | 252 | "%s/syscalls/%s/id", |
ebf294bf | 253 | tracing_events_path, evname) < 0) |
d854861c ACM |
254 | return -1; |
255 | ||
256 | fd = open(filename, O_RDONLY); | |
257 | if (fd >= 0) { | |
258 | char id[16]; | |
259 | if (read(fd, id, sizeof(id)) > 0) | |
260 | err = atoi(id); | |
261 | close(fd); | |
262 | } | |
263 | ||
264 | free(filename); | |
265 | return err; | |
266 | } | |
267 | ||
268 | static int test__open_syscall_event(void) | |
269 | { | |
270 | int err = -1, fd; | |
271 | struct thread_map *threads; | |
272 | struct perf_evsel *evsel; | |
23a2f3ab | 273 | struct perf_event_attr attr; |
d854861c ACM |
274 | unsigned int nr_open_calls = 111, i; |
275 | int id = trace_event__id("sys_enter_open"); | |
276 | ||
277 | if (id < 0) { | |
454a3bbe | 278 | pr_debug("is debugfs mounted on /sys/kernel/debug?\n"); |
d854861c ACM |
279 | return -1; |
280 | } | |
281 | ||
0d37aa34 | 282 | threads = thread_map__new(-1, getpid(), UINT_MAX); |
d854861c | 283 | if (threads == NULL) { |
454a3bbe | 284 | pr_debug("thread_map__new\n"); |
d854861c ACM |
285 | return -1; |
286 | } | |
287 | ||
23a2f3ab LM |
288 | memset(&attr, 0, sizeof(attr)); |
289 | attr.type = PERF_TYPE_TRACEPOINT; | |
290 | attr.config = id; | |
291 | evsel = perf_evsel__new(&attr, 0); | |
d854861c | 292 | if (evsel == NULL) { |
454a3bbe | 293 | pr_debug("perf_evsel__new\n"); |
d854861c ACM |
294 | goto out_thread_map_delete; |
295 | } | |
296 | ||
727ab04e | 297 | if (perf_evsel__open_per_thread(evsel, threads, false, NULL) < 0) { |
454a3bbe ACM |
298 | pr_debug("failed to open counter: %s, " |
299 | "tweak /proc/sys/kernel/perf_event_paranoid?\n", | |
300 | strerror(errno)); | |
d854861c ACM |
301 | goto out_evsel_delete; |
302 | } | |
303 | ||
304 | for (i = 0; i < nr_open_calls; ++i) { | |
305 | fd = open("/etc/passwd", O_RDONLY); | |
306 | close(fd); | |
307 | } | |
308 | ||
309 | if (perf_evsel__read_on_cpu(evsel, 0, 0) < 0) { | |
5d2cd909 | 310 | pr_debug("perf_evsel__read_on_cpu\n"); |
d854861c ACM |
311 | goto out_close_fd; |
312 | } | |
313 | ||
454a3bbe | 314 | if (evsel->counts->cpu[0].val != nr_open_calls) { |
9486aa38 | 315 | pr_debug("perf_evsel__read_on_cpu: expected to intercept %d calls, got %" PRIu64 "\n", |
d854861c | 316 | nr_open_calls, evsel->counts->cpu[0].val); |
454a3bbe ACM |
317 | goto out_close_fd; |
318 | } | |
d854861c ACM |
319 | |
320 | err = 0; | |
321 | out_close_fd: | |
322 | perf_evsel__close_fd(evsel, 1, threads->nr); | |
323 | out_evsel_delete: | |
324 | perf_evsel__delete(evsel); | |
325 | out_thread_map_delete: | |
326 | thread_map__delete(threads); | |
327 | return err; | |
328 | } | |
329 | ||
0252208e ACM |
330 | #include <sched.h> |
331 | ||
332 | static int test__open_syscall_event_on_all_cpus(void) | |
333 | { | |
334 | int err = -1, fd, cpu; | |
335 | struct thread_map *threads; | |
336 | struct cpu_map *cpus; | |
337 | struct perf_evsel *evsel; | |
338 | struct perf_event_attr attr; | |
339 | unsigned int nr_open_calls = 111, i; | |
57b84e53 | 340 | cpu_set_t cpu_set; |
0252208e ACM |
341 | int id = trace_event__id("sys_enter_open"); |
342 | ||
343 | if (id < 0) { | |
344 | pr_debug("is debugfs mounted on /sys/kernel/debug?\n"); | |
345 | return -1; | |
346 | } | |
347 | ||
0d37aa34 | 348 | threads = thread_map__new(-1, getpid(), UINT_MAX); |
0252208e ACM |
349 | if (threads == NULL) { |
350 | pr_debug("thread_map__new\n"); | |
351 | return -1; | |
352 | } | |
353 | ||
354 | cpus = cpu_map__new(NULL); | |
98d77b78 HP |
355 | if (cpus == NULL) { |
356 | pr_debug("cpu_map__new\n"); | |
357 | goto out_thread_map_delete; | |
0252208e ACM |
358 | } |
359 | ||
0252208e | 360 | |
57b84e53 | 361 | CPU_ZERO(&cpu_set); |
0252208e ACM |
362 | |
363 | memset(&attr, 0, sizeof(attr)); | |
364 | attr.type = PERF_TYPE_TRACEPOINT; | |
365 | attr.config = id; | |
366 | evsel = perf_evsel__new(&attr, 0); | |
367 | if (evsel == NULL) { | |
368 | pr_debug("perf_evsel__new\n"); | |
57b84e53 | 369 | goto out_thread_map_delete; |
0252208e ACM |
370 | } |
371 | ||
727ab04e | 372 | if (perf_evsel__open(evsel, cpus, threads, false, NULL) < 0) { |
0252208e ACM |
373 | pr_debug("failed to open counter: %s, " |
374 | "tweak /proc/sys/kernel/perf_event_paranoid?\n", | |
375 | strerror(errno)); | |
376 | goto out_evsel_delete; | |
377 | } | |
378 | ||
379 | for (cpu = 0; cpu < cpus->nr; ++cpu) { | |
380 | unsigned int ncalls = nr_open_calls + cpu; | |
57b84e53 ACM |
381 | /* |
382 | * XXX eventually lift this restriction in a way that | |
383 | * keeps perf building on older glibc installations | |
384 | * without CPU_ALLOC. 1024 cpus in 2010 still seems | |
385 | * a reasonable upper limit tho :-) | |
386 | */ | |
387 | if (cpus->map[cpu] >= CPU_SETSIZE) { | |
388 | pr_debug("Ignoring CPU %d\n", cpus->map[cpu]); | |
389 | continue; | |
390 | } | |
0252208e | 391 | |
57b84e53 ACM |
392 | CPU_SET(cpus->map[cpu], &cpu_set); |
393 | if (sched_setaffinity(0, sizeof(cpu_set), &cpu_set) < 0) { | |
ffb5e0fb HP |
394 | pr_debug("sched_setaffinity() failed on CPU %d: %s ", |
395 | cpus->map[cpu], | |
396 | strerror(errno)); | |
397 | goto out_close_fd; | |
398 | } | |
0252208e ACM |
399 | for (i = 0; i < ncalls; ++i) { |
400 | fd = open("/etc/passwd", O_RDONLY); | |
401 | close(fd); | |
402 | } | |
57b84e53 | 403 | CPU_CLR(cpus->map[cpu], &cpu_set); |
0252208e ACM |
404 | } |
405 | ||
406 | /* | |
407 | * Here we need to explicitely preallocate the counts, as if | |
408 | * we use the auto allocation it will allocate just for 1 cpu, | |
409 | * as we start by cpu 0. | |
410 | */ | |
411 | if (perf_evsel__alloc_counts(evsel, cpus->nr) < 0) { | |
412 | pr_debug("perf_evsel__alloc_counts(ncpus=%d)\n", cpus->nr); | |
413 | goto out_close_fd; | |
414 | } | |
415 | ||
d2af9687 ACM |
416 | err = 0; |
417 | ||
0252208e ACM |
418 | for (cpu = 0; cpu < cpus->nr; ++cpu) { |
419 | unsigned int expected; | |
420 | ||
57b84e53 ACM |
421 | if (cpus->map[cpu] >= CPU_SETSIZE) |
422 | continue; | |
423 | ||
0252208e | 424 | if (perf_evsel__read_on_cpu(evsel, cpu, 0) < 0) { |
5d2cd909 | 425 | pr_debug("perf_evsel__read_on_cpu\n"); |
d2af9687 ACM |
426 | err = -1; |
427 | break; | |
0252208e ACM |
428 | } |
429 | ||
430 | expected = nr_open_calls + cpu; | |
431 | if (evsel->counts->cpu[cpu].val != expected) { | |
9486aa38 | 432 | pr_debug("perf_evsel__read_on_cpu: expected to intercept %d calls on cpu %d, got %" PRIu64 "\n", |
ffb5e0fb | 433 | expected, cpus->map[cpu], evsel->counts->cpu[cpu].val); |
d2af9687 | 434 | err = -1; |
0252208e ACM |
435 | } |
436 | } | |
437 | ||
0252208e ACM |
438 | out_close_fd: |
439 | perf_evsel__close_fd(evsel, 1, threads->nr); | |
440 | out_evsel_delete: | |
441 | perf_evsel__delete(evsel); | |
0252208e ACM |
442 | out_thread_map_delete: |
443 | thread_map__delete(threads); | |
444 | return err; | |
445 | } | |
446 | ||
de5fa3a8 ACM |
447 | /* |
448 | * This test will generate random numbers of calls to some getpid syscalls, | |
449 | * then establish an mmap for a group of events that are created to monitor | |
450 | * the syscalls. | |
451 | * | |
452 | * It will receive the events, using mmap, use its PERF_SAMPLE_ID generated | |
453 | * sample.id field to map back to its respective perf_evsel instance. | |
454 | * | |
455 | * Then it checks if the number of syscalls reported as perf events by | |
456 | * the kernel corresponds to the number of syscalls made. | |
457 | */ | |
458 | static int test__basic_mmap(void) | |
459 | { | |
460 | int err = -1; | |
8115d60c | 461 | union perf_event *event; |
de5fa3a8 | 462 | struct thread_map *threads; |
de5fa3a8 ACM |
463 | struct cpu_map *cpus; |
464 | struct perf_evlist *evlist; | |
465 | struct perf_event_attr attr = { | |
466 | .type = PERF_TYPE_TRACEPOINT, | |
467 | .read_format = PERF_FORMAT_ID, | |
468 | .sample_type = PERF_SAMPLE_ID, | |
469 | .watermark = 0, | |
470 | }; | |
471 | cpu_set_t cpu_set; | |
472 | const char *syscall_names[] = { "getsid", "getppid", "getpgrp", | |
473 | "getpgid", }; | |
474 | pid_t (*syscalls[])(void) = { (void *)getsid, getppid, getpgrp, | |
475 | (void*)getpgid }; | |
476 | #define nsyscalls ARRAY_SIZE(syscall_names) | |
477 | int ids[nsyscalls]; | |
478 | unsigned int nr_events[nsyscalls], | |
479 | expected_nr_events[nsyscalls], i, j; | |
480 | struct perf_evsel *evsels[nsyscalls], *evsel; | |
c2a70653 | 481 | int sample_size = __perf_evsel__sample_size(attr.sample_type); |
de5fa3a8 ACM |
482 | |
483 | for (i = 0; i < nsyscalls; ++i) { | |
484 | char name[64]; | |
485 | ||
486 | snprintf(name, sizeof(name), "sys_enter_%s", syscall_names[i]); | |
487 | ids[i] = trace_event__id(name); | |
488 | if (ids[i] < 0) { | |
489 | pr_debug("Is debugfs mounted on /sys/kernel/debug?\n"); | |
490 | return -1; | |
491 | } | |
492 | nr_events[i] = 0; | |
493 | expected_nr_events[i] = random() % 257; | |
494 | } | |
495 | ||
0d37aa34 | 496 | threads = thread_map__new(-1, getpid(), UINT_MAX); |
de5fa3a8 ACM |
497 | if (threads == NULL) { |
498 | pr_debug("thread_map__new\n"); | |
499 | return -1; | |
500 | } | |
501 | ||
502 | cpus = cpu_map__new(NULL); | |
54489c18 HP |
503 | if (cpus == NULL) { |
504 | pr_debug("cpu_map__new\n"); | |
de5fa3a8 ACM |
505 | goto out_free_threads; |
506 | } | |
507 | ||
508 | CPU_ZERO(&cpu_set); | |
509 | CPU_SET(cpus->map[0], &cpu_set); | |
510 | sched_setaffinity(0, sizeof(cpu_set), &cpu_set); | |
511 | if (sched_setaffinity(0, sizeof(cpu_set), &cpu_set) < 0) { | |
512 | pr_debug("sched_setaffinity() failed on CPU %d: %s ", | |
513 | cpus->map[0], strerror(errno)); | |
514 | goto out_free_cpus; | |
515 | } | |
516 | ||
7e2ed097 | 517 | evlist = perf_evlist__new(cpus, threads); |
54489c18 | 518 | if (evlist == NULL) { |
de5fa3a8 ACM |
519 | pr_debug("perf_evlist__new\n"); |
520 | goto out_free_cpus; | |
521 | } | |
522 | ||
523 | /* anonymous union fields, can't be initialized above */ | |
524 | attr.wakeup_events = 1; | |
525 | attr.sample_period = 1; | |
526 | ||
de5fa3a8 ACM |
527 | for (i = 0; i < nsyscalls; ++i) { |
528 | attr.config = ids[i]; | |
529 | evsels[i] = perf_evsel__new(&attr, i); | |
530 | if (evsels[i] == NULL) { | |
531 | pr_debug("perf_evsel__new\n"); | |
532 | goto out_free_evlist; | |
533 | } | |
534 | ||
535 | perf_evlist__add(evlist, evsels[i]); | |
536 | ||
727ab04e | 537 | if (perf_evsel__open(evsels[i], cpus, threads, false, NULL) < 0) { |
de5fa3a8 ACM |
538 | pr_debug("failed to open counter: %s, " |
539 | "tweak /proc/sys/kernel/perf_event_paranoid?\n", | |
540 | strerror(errno)); | |
541 | goto out_close_fd; | |
542 | } | |
543 | } | |
544 | ||
7e2ed097 | 545 | if (perf_evlist__mmap(evlist, 128, true) < 0) { |
de5fa3a8 ACM |
546 | pr_debug("failed to mmap events: %d (%s)\n", errno, |
547 | strerror(errno)); | |
548 | goto out_close_fd; | |
549 | } | |
550 | ||
551 | for (i = 0; i < nsyscalls; ++i) | |
552 | for (j = 0; j < expected_nr_events[i]; ++j) { | |
553 | int foo = syscalls[i](); | |
554 | ++foo; | |
555 | } | |
556 | ||
aece948f | 557 | while ((event = perf_evlist__mmap_read(evlist, 0)) != NULL) { |
8d50e5b4 | 558 | struct perf_sample sample; |
de5fa3a8 ACM |
559 | |
560 | if (event->header.type != PERF_RECORD_SAMPLE) { | |
561 | pr_debug("unexpected %s event\n", | |
8115d60c | 562 | perf_event__name(event->header.type)); |
de5fa3a8 ACM |
563 | goto out_munmap; |
564 | } | |
565 | ||
5538beca | 566 | err = perf_event__parse_sample(event, attr.sample_type, sample_size, |
936be503 | 567 | false, &sample, false); |
5538beca FW |
568 | if (err) { |
569 | pr_err("Can't parse sample, err = %d\n", err); | |
570 | goto out_munmap; | |
571 | } | |
572 | ||
de5fa3a8 ACM |
573 | evsel = perf_evlist__id2evsel(evlist, sample.id); |
574 | if (evsel == NULL) { | |
575 | pr_debug("event with id %" PRIu64 | |
576 | " doesn't map to an evsel\n", sample.id); | |
577 | goto out_munmap; | |
578 | } | |
579 | nr_events[evsel->idx]++; | |
580 | } | |
581 | ||
582 | list_for_each_entry(evsel, &evlist->entries, node) { | |
583 | if (nr_events[evsel->idx] != expected_nr_events[evsel->idx]) { | |
584 | pr_debug("expected %d %s events, got %d\n", | |
585 | expected_nr_events[evsel->idx], | |
7289f83c | 586 | perf_evsel__name(evsel), nr_events[evsel->idx]); |
de5fa3a8 ACM |
587 | goto out_munmap; |
588 | } | |
589 | } | |
590 | ||
591 | err = 0; | |
592 | out_munmap: | |
7e2ed097 | 593 | perf_evlist__munmap(evlist); |
de5fa3a8 ACM |
594 | out_close_fd: |
595 | for (i = 0; i < nsyscalls; ++i) | |
596 | perf_evsel__close_fd(evsels[i], 1, threads->nr); | |
597 | out_free_evlist: | |
598 | perf_evlist__delete(evlist); | |
599 | out_free_cpus: | |
600 | cpu_map__delete(cpus); | |
601 | out_free_threads: | |
602 | thread_map__delete(threads); | |
603 | return err; | |
604 | #undef nsyscalls | |
605 | } | |
606 | ||
3e7c439a ACM |
607 | static int sched__get_first_possible_cpu(pid_t pid, cpu_set_t **maskp, |
608 | size_t *sizep) | |
609 | { | |
610 | cpu_set_t *mask; | |
611 | size_t size; | |
612 | int i, cpu = -1, nrcpus = 1024; | |
613 | realloc: | |
614 | mask = CPU_ALLOC(nrcpus); | |
615 | size = CPU_ALLOC_SIZE(nrcpus); | |
616 | CPU_ZERO_S(size, mask); | |
617 | ||
618 | if (sched_getaffinity(pid, size, mask) == -1) { | |
619 | CPU_FREE(mask); | |
620 | if (errno == EINVAL && nrcpus < (1024 << 8)) { | |
621 | nrcpus = nrcpus << 2; | |
622 | goto realloc; | |
623 | } | |
624 | perror("sched_getaffinity"); | |
625 | return -1; | |
626 | } | |
627 | ||
628 | for (i = 0; i < nrcpus; i++) { | |
629 | if (CPU_ISSET_S(i, size, mask)) { | |
630 | if (cpu == -1) { | |
631 | cpu = i; | |
632 | *maskp = mask; | |
633 | *sizep = size; | |
634 | } else | |
635 | CPU_CLR_S(i, size, mask); | |
636 | } | |
637 | } | |
638 | ||
639 | if (cpu == -1) | |
640 | CPU_FREE(mask); | |
641 | ||
642 | return cpu; | |
643 | } | |
644 | ||
645 | static int test__PERF_RECORD(void) | |
646 | { | |
647 | struct perf_record_opts opts = { | |
b809ac10 NK |
648 | .target = { |
649 | .uid = UINT_MAX, | |
d1cb9fce | 650 | .uses_mmap = true, |
b809ac10 | 651 | }, |
3e7c439a ACM |
652 | .no_delay = true, |
653 | .freq = 10, | |
654 | .mmap_pages = 256, | |
3e7c439a ACM |
655 | }; |
656 | cpu_set_t *cpu_mask = NULL; | |
657 | size_t cpu_mask_size = 0; | |
658 | struct perf_evlist *evlist = perf_evlist__new(NULL, NULL); | |
659 | struct perf_evsel *evsel; | |
660 | struct perf_sample sample; | |
661 | const char *cmd = "sleep"; | |
662 | const char *argv[] = { cmd, "1", NULL, }; | |
663 | char *bname; | |
664 | u64 sample_type, prev_time = 0; | |
665 | bool found_cmd_mmap = false, | |
666 | found_libc_mmap = false, | |
667 | found_vdso_mmap = false, | |
668 | found_ld_mmap = false; | |
f71c49e5 | 669 | int err = -1, errs = 0, i, wakeups = 0, sample_size; |
3e7c439a ACM |
670 | u32 cpu; |
671 | int total_events = 0, nr_events[PERF_RECORD_MAX] = { 0, }; | |
672 | ||
673 | if (evlist == NULL || argv == NULL) { | |
674 | pr_debug("Not enough memory to create evlist\n"); | |
675 | goto out; | |
676 | } | |
677 | ||
678 | /* | |
679 | * We need at least one evsel in the evlist, use the default | |
680 | * one: "cycles". | |
681 | */ | |
682 | err = perf_evlist__add_default(evlist); | |
683 | if (err < 0) { | |
684 | pr_debug("Not enough memory to create evsel\n"); | |
685 | goto out_delete_evlist; | |
686 | } | |
687 | ||
688 | /* | |
689 | * Create maps of threads and cpus to monitor. In this case | |
690 | * we start with all threads and cpus (-1, -1) but then in | |
691 | * perf_evlist__prepare_workload we'll fill in the only thread | |
692 | * we're monitoring, the one forked there. | |
693 | */ | |
b809ac10 | 694 | err = perf_evlist__create_maps(evlist, &opts.target); |
3e7c439a ACM |
695 | if (err < 0) { |
696 | pr_debug("Not enough memory to create thread/cpu maps\n"); | |
697 | goto out_delete_evlist; | |
698 | } | |
699 | ||
700 | /* | |
701 | * Prepare the workload in argv[] to run, it'll fork it, and then wait | |
702 | * for perf_evlist__start_workload() to exec it. This is done this way | |
703 | * so that we have time to open the evlist (calling sys_perf_event_open | |
704 | * on all the fds) and then mmap them. | |
705 | */ | |
706 | err = perf_evlist__prepare_workload(evlist, &opts, argv); | |
707 | if (err < 0) { | |
708 | pr_debug("Couldn't run the workload!\n"); | |
709 | goto out_delete_evlist; | |
710 | } | |
711 | ||
712 | /* | |
713 | * Config the evsels, setting attr->comm on the first one, etc. | |
714 | */ | |
715 | evsel = list_entry(evlist->entries.next, struct perf_evsel, node); | |
716 | evsel->attr.sample_type |= PERF_SAMPLE_CPU; | |
717 | evsel->attr.sample_type |= PERF_SAMPLE_TID; | |
718 | evsel->attr.sample_type |= PERF_SAMPLE_TIME; | |
719 | perf_evlist__config_attrs(evlist, &opts); | |
720 | ||
721 | err = sched__get_first_possible_cpu(evlist->workload.pid, &cpu_mask, | |
722 | &cpu_mask_size); | |
723 | if (err < 0) { | |
724 | pr_debug("sched__get_first_possible_cpu: %s\n", strerror(errno)); | |
725 | goto out_delete_evlist; | |
726 | } | |
727 | ||
728 | cpu = err; | |
729 | ||
730 | /* | |
731 | * So that we can check perf_sample.cpu on all the samples. | |
732 | */ | |
733 | if (sched_setaffinity(evlist->workload.pid, cpu_mask_size, cpu_mask) < 0) { | |
734 | pr_debug("sched_setaffinity: %s\n", strerror(errno)); | |
735 | goto out_free_cpu_mask; | |
736 | } | |
737 | ||
738 | /* | |
739 | * Call sys_perf_event_open on all the fds on all the evsels, | |
740 | * grouping them if asked to. | |
741 | */ | |
742 | err = perf_evlist__open(evlist, opts.group); | |
743 | if (err < 0) { | |
744 | pr_debug("perf_evlist__open: %s\n", strerror(errno)); | |
745 | goto out_delete_evlist; | |
746 | } | |
747 | ||
748 | /* | |
749 | * mmap the first fd on a given CPU and ask for events for the other | |
750 | * fds in the same CPU to be injected in the same mmap ring buffer | |
751 | * (using ioctl(PERF_EVENT_IOC_SET_OUTPUT)). | |
752 | */ | |
753 | err = perf_evlist__mmap(evlist, opts.mmap_pages, false); | |
754 | if (err < 0) { | |
755 | pr_debug("perf_evlist__mmap: %s\n", strerror(errno)); | |
756 | goto out_delete_evlist; | |
757 | } | |
758 | ||
759 | /* | |
760 | * We'll need these two to parse the PERF_SAMPLE_* fields in each | |
761 | * event. | |
762 | */ | |
763 | sample_type = perf_evlist__sample_type(evlist); | |
764 | sample_size = __perf_evsel__sample_size(sample_type); | |
765 | ||
766 | /* | |
767 | * Now that all is properly set up, enable the events, they will | |
768 | * count just on workload.pid, which will start... | |
769 | */ | |
770 | perf_evlist__enable(evlist); | |
771 | ||
772 | /* | |
773 | * Now! | |
774 | */ | |
775 | perf_evlist__start_workload(evlist); | |
776 | ||
3e7c439a ACM |
777 | while (1) { |
778 | int before = total_events; | |
779 | ||
780 | for (i = 0; i < evlist->nr_mmaps; i++) { | |
781 | union perf_event *event; | |
782 | ||
783 | while ((event = perf_evlist__mmap_read(evlist, i)) != NULL) { | |
784 | const u32 type = event->header.type; | |
785 | const char *name = perf_event__name(type); | |
786 | ||
787 | ++total_events; | |
788 | if (type < PERF_RECORD_MAX) | |
789 | nr_events[type]++; | |
790 | ||
f71c49e5 ACM |
791 | err = perf_event__parse_sample(event, sample_type, |
792 | sample_size, true, | |
793 | &sample, false); | |
794 | if (err < 0) { | |
3e7c439a ACM |
795 | if (verbose) |
796 | perf_event__fprintf(event, stderr); | |
797 | pr_debug("Couldn't parse sample\n"); | |
798 | goto out_err; | |
799 | } | |
800 | ||
801 | if (verbose) { | |
802 | pr_info("%" PRIu64" %d ", sample.time, sample.cpu); | |
803 | perf_event__fprintf(event, stderr); | |
804 | } | |
805 | ||
806 | if (prev_time > sample.time) { | |
807 | pr_debug("%s going backwards in time, prev=%" PRIu64 ", curr=%" PRIu64 "\n", | |
808 | name, prev_time, sample.time); | |
f71c49e5 | 809 | ++errs; |
3e7c439a ACM |
810 | } |
811 | ||
812 | prev_time = sample.time; | |
813 | ||
814 | if (sample.cpu != cpu) { | |
815 | pr_debug("%s with unexpected cpu, expected %d, got %d\n", | |
816 | name, cpu, sample.cpu); | |
f71c49e5 | 817 | ++errs; |
3e7c439a ACM |
818 | } |
819 | ||
820 | if ((pid_t)sample.pid != evlist->workload.pid) { | |
821 | pr_debug("%s with unexpected pid, expected %d, got %d\n", | |
822 | name, evlist->workload.pid, sample.pid); | |
f71c49e5 | 823 | ++errs; |
3e7c439a ACM |
824 | } |
825 | ||
826 | if ((pid_t)sample.tid != evlist->workload.pid) { | |
827 | pr_debug("%s with unexpected tid, expected %d, got %d\n", | |
828 | name, evlist->workload.pid, sample.tid); | |
f71c49e5 | 829 | ++errs; |
3e7c439a ACM |
830 | } |
831 | ||
832 | if ((type == PERF_RECORD_COMM || | |
833 | type == PERF_RECORD_MMAP || | |
834 | type == PERF_RECORD_FORK || | |
835 | type == PERF_RECORD_EXIT) && | |
836 | (pid_t)event->comm.pid != evlist->workload.pid) { | |
837 | pr_debug("%s with unexpected pid/tid\n", name); | |
f71c49e5 | 838 | ++errs; |
3e7c439a ACM |
839 | } |
840 | ||
841 | if ((type == PERF_RECORD_COMM || | |
842 | type == PERF_RECORD_MMAP) && | |
843 | event->comm.pid != event->comm.tid) { | |
844 | pr_debug("%s with different pid/tid!\n", name); | |
f71c49e5 | 845 | ++errs; |
3e7c439a ACM |
846 | } |
847 | ||
848 | switch (type) { | |
849 | case PERF_RECORD_COMM: | |
850 | if (strcmp(event->comm.comm, cmd)) { | |
851 | pr_debug("%s with unexpected comm!\n", name); | |
f71c49e5 | 852 | ++errs; |
3e7c439a ACM |
853 | } |
854 | break; | |
855 | case PERF_RECORD_EXIT: | |
856 | goto found_exit; | |
857 | case PERF_RECORD_MMAP: | |
858 | bname = strrchr(event->mmap.filename, '/'); | |
859 | if (bname != NULL) { | |
860 | if (!found_cmd_mmap) | |
861 | found_cmd_mmap = !strcmp(bname + 1, cmd); | |
862 | if (!found_libc_mmap) | |
863 | found_libc_mmap = !strncmp(bname + 1, "libc", 4); | |
864 | if (!found_ld_mmap) | |
865 | found_ld_mmap = !strncmp(bname + 1, "ld", 2); | |
866 | } else if (!found_vdso_mmap) | |
867 | found_vdso_mmap = !strcmp(event->mmap.filename, "[vdso]"); | |
868 | break; | |
869 | ||
870 | case PERF_RECORD_SAMPLE: | |
871 | /* Just ignore samples for now */ | |
872 | break; | |
873 | default: | |
874 | pr_debug("Unexpected perf_event->header.type %d!\n", | |
875 | type); | |
f71c49e5 | 876 | ++errs; |
3e7c439a ACM |
877 | } |
878 | } | |
879 | } | |
880 | ||
881 | /* | |
882 | * We don't use poll here because at least at 3.1 times the | |
883 | * PERF_RECORD_{!SAMPLE} events don't honour | |
884 | * perf_event_attr.wakeup_events, just PERF_EVENT_SAMPLE does. | |
885 | */ | |
886 | if (total_events == before && false) | |
887 | poll(evlist->pollfd, evlist->nr_fds, -1); | |
888 | ||
889 | sleep(1); | |
890 | if (++wakeups > 5) { | |
891 | pr_debug("No PERF_RECORD_EXIT event!\n"); | |
f71c49e5 | 892 | break; |
3e7c439a ACM |
893 | } |
894 | } | |
895 | ||
896 | found_exit: | |
897 | if (nr_events[PERF_RECORD_COMM] > 1) { | |
898 | pr_debug("Excessive number of PERF_RECORD_COMM events!\n"); | |
f71c49e5 | 899 | ++errs; |
3e7c439a ACM |
900 | } |
901 | ||
902 | if (nr_events[PERF_RECORD_COMM] == 0) { | |
903 | pr_debug("Missing PERF_RECORD_COMM for %s!\n", cmd); | |
f71c49e5 | 904 | ++errs; |
3e7c439a ACM |
905 | } |
906 | ||
907 | if (!found_cmd_mmap) { | |
908 | pr_debug("PERF_RECORD_MMAP for %s missing!\n", cmd); | |
f71c49e5 | 909 | ++errs; |
3e7c439a ACM |
910 | } |
911 | ||
912 | if (!found_libc_mmap) { | |
913 | pr_debug("PERF_RECORD_MMAP for %s missing!\n", "libc"); | |
f71c49e5 | 914 | ++errs; |
3e7c439a ACM |
915 | } |
916 | ||
917 | if (!found_ld_mmap) { | |
918 | pr_debug("PERF_RECORD_MMAP for %s missing!\n", "ld"); | |
f71c49e5 | 919 | ++errs; |
3e7c439a ACM |
920 | } |
921 | ||
922 | if (!found_vdso_mmap) { | |
923 | pr_debug("PERF_RECORD_MMAP for %s missing!\n", "[vdso]"); | |
f71c49e5 | 924 | ++errs; |
3e7c439a | 925 | } |
3e7c439a ACM |
926 | out_err: |
927 | perf_evlist__munmap(evlist); | |
928 | out_free_cpu_mask: | |
929 | CPU_FREE(cpu_mask); | |
930 | out_delete_evlist: | |
931 | perf_evlist__delete(evlist); | |
932 | out: | |
f71c49e5 | 933 | return (err < 0 || errs > 0) ? -1 : 0; |
3e7c439a ACM |
934 | } |
935 | ||
08aa0d1f PZ |
936 | |
937 | #if defined(__x86_64__) || defined(__i386__) | |
938 | ||
939 | #define barrier() asm volatile("" ::: "memory") | |
940 | ||
941 | static u64 rdpmc(unsigned int counter) | |
942 | { | |
943 | unsigned int low, high; | |
944 | ||
945 | asm volatile("rdpmc" : "=a" (low), "=d" (high) : "c" (counter)); | |
946 | ||
947 | return low | ((u64)high) << 32; | |
948 | } | |
949 | ||
950 | static u64 rdtsc(void) | |
951 | { | |
952 | unsigned int low, high; | |
953 | ||
954 | asm volatile("rdtsc" : "=a" (low), "=d" (high)); | |
955 | ||
956 | return low | ((u64)high) << 32; | |
957 | } | |
958 | ||
959 | static u64 mmap_read_self(void *addr) | |
960 | { | |
961 | struct perf_event_mmap_page *pc = addr; | |
962 | u32 seq, idx, time_mult = 0, time_shift = 0; | |
963 | u64 count, cyc = 0, time_offset = 0, enabled, running, delta; | |
964 | ||
965 | do { | |
966 | seq = pc->lock; | |
967 | barrier(); | |
968 | ||
969 | enabled = pc->time_enabled; | |
970 | running = pc->time_running; | |
971 | ||
972 | if (enabled != running) { | |
973 | cyc = rdtsc(); | |
974 | time_mult = pc->time_mult; | |
975 | time_shift = pc->time_shift; | |
976 | time_offset = pc->time_offset; | |
977 | } | |
978 | ||
979 | idx = pc->index; | |
980 | count = pc->offset; | |
981 | if (idx) | |
982 | count += rdpmc(idx - 1); | |
983 | ||
984 | barrier(); | |
985 | } while (pc->lock != seq); | |
986 | ||
987 | if (enabled != running) { | |
988 | u64 quot, rem; | |
989 | ||
990 | quot = (cyc >> time_shift); | |
991 | rem = cyc & ((1 << time_shift) - 1); | |
992 | delta = time_offset + quot * time_mult + | |
993 | ((rem * time_mult) >> time_shift); | |
994 | ||
995 | enabled += delta; | |
996 | if (idx) | |
997 | running += delta; | |
998 | ||
999 | quot = count / running; | |
1000 | rem = count % running; | |
1001 | count = quot * enabled + (rem * enabled) / running; | |
1002 | } | |
1003 | ||
1004 | return count; | |
1005 | } | |
1006 | ||
1007 | /* | |
1008 | * If the RDPMC instruction faults then signal this back to the test parent task: | |
1009 | */ | |
1010 | static void segfault_handler(int sig __used, siginfo_t *info __used, void *uc __used) | |
1011 | { | |
1012 | exit(-1); | |
1013 | } | |
1014 | ||
1015 | static int __test__rdpmc(void) | |
1016 | { | |
1017 | long page_size = sysconf(_SC_PAGE_SIZE); | |
1018 | volatile int tmp = 0; | |
1019 | u64 i, loops = 1000; | |
1020 | int n; | |
1021 | int fd; | |
1022 | void *addr; | |
1023 | struct perf_event_attr attr = { | |
1024 | .type = PERF_TYPE_HARDWARE, | |
1025 | .config = PERF_COUNT_HW_INSTRUCTIONS, | |
1026 | .exclude_kernel = 1, | |
1027 | }; | |
1028 | u64 delta_sum = 0; | |
1029 | struct sigaction sa; | |
1030 | ||
1031 | sigfillset(&sa.sa_mask); | |
1032 | sa.sa_sigaction = segfault_handler; | |
1033 | sigaction(SIGSEGV, &sa, NULL); | |
1034 | ||
08aa0d1f PZ |
1035 | fd = sys_perf_event_open(&attr, 0, -1, -1, 0); |
1036 | if (fd < 0) { | |
1037 | die("Error: sys_perf_event_open() syscall returned " | |
1038 | "with %d (%s)\n", fd, strerror(errno)); | |
1039 | } | |
1040 | ||
1041 | addr = mmap(NULL, page_size, PROT_READ, MAP_SHARED, fd, 0); | |
1042 | if (addr == (void *)(-1)) { | |
1043 | die("Error: mmap() syscall returned " | |
1044 | "with (%s)\n", strerror(errno)); | |
1045 | } | |
1046 | ||
1047 | for (n = 0; n < 6; n++) { | |
1048 | u64 stamp, now, delta; | |
1049 | ||
1050 | stamp = mmap_read_self(addr); | |
1051 | ||
1052 | for (i = 0; i < loops; i++) | |
1053 | tmp++; | |
1054 | ||
1055 | now = mmap_read_self(addr); | |
1056 | loops *= 10; | |
1057 | ||
1058 | delta = now - stamp; | |
23080e4c | 1059 | pr_debug("%14d: %14Lu\n", n, (long long)delta); |
08aa0d1f PZ |
1060 | |
1061 | delta_sum += delta; | |
1062 | } | |
1063 | ||
1064 | munmap(addr, page_size); | |
1065 | close(fd); | |
1066 | ||
23080e4c | 1067 | pr_debug(" "); |
08aa0d1f PZ |
1068 | |
1069 | if (!delta_sum) | |
1070 | return -1; | |
1071 | ||
1072 | return 0; | |
1073 | } | |
1074 | ||
1075 | static int test__rdpmc(void) | |
1076 | { | |
1077 | int status = 0; | |
1078 | int wret = 0; | |
1079 | int ret; | |
1080 | int pid; | |
1081 | ||
1082 | pid = fork(); | |
1083 | if (pid < 0) | |
1084 | return -1; | |
1085 | ||
1086 | if (!pid) { | |
1087 | ret = __test__rdpmc(); | |
1088 | ||
1089 | exit(ret); | |
1090 | } | |
1091 | ||
1092 | wret = waitpid(pid, &status, 0); | |
1093 | if (wret < 0 || status) | |
1094 | return -1; | |
1095 | ||
1096 | return 0; | |
1097 | } | |
1098 | ||
1099 | #endif | |
1100 | ||
cd82a32e JO |
1101 | static int test__perf_pmu(void) |
1102 | { | |
1103 | return perf_pmu__test(); | |
1104 | } | |
1105 | ||
1c6a800c ACM |
1106 | static struct test { |
1107 | const char *desc; | |
1108 | int (*func)(void); | |
1109 | } tests[] = { | |
1110 | { | |
1111 | .desc = "vmlinux symtab matches kallsyms", | |
1112 | .func = test__vmlinux_matches_kallsyms, | |
1113 | }, | |
d854861c ACM |
1114 | { |
1115 | .desc = "detect open syscall event", | |
1116 | .func = test__open_syscall_event, | |
1117 | }, | |
0252208e ACM |
1118 | { |
1119 | .desc = "detect open syscall event on all cpus", | |
1120 | .func = test__open_syscall_event_on_all_cpus, | |
1121 | }, | |
de5fa3a8 ACM |
1122 | { |
1123 | .desc = "read samples using the mmap interface", | |
1124 | .func = test__basic_mmap, | |
1125 | }, | |
13b62567 JO |
1126 | { |
1127 | .desc = "parse events tests", | |
f50246e2 | 1128 | .func = parse_events__test, |
13b62567 | 1129 | }, |
08aa0d1f PZ |
1130 | #if defined(__x86_64__) || defined(__i386__) |
1131 | { | |
1132 | .desc = "x86 rdpmc test", | |
1133 | .func = test__rdpmc, | |
1134 | }, | |
1135 | #endif | |
3e7c439a ACM |
1136 | { |
1137 | .desc = "Validate PERF_RECORD_* events & perf_sample fields", | |
1138 | .func = test__PERF_RECORD, | |
1139 | }, | |
cd82a32e JO |
1140 | { |
1141 | .desc = "Test perf pmu format parsing", | |
1142 | .func = test__perf_pmu, | |
1143 | }, | |
1c6a800c ACM |
1144 | { |
1145 | .func = NULL, | |
1146 | }, | |
1147 | }; | |
1148 | ||
e60770a0 | 1149 | static bool perf_test__matches(int curr, int argc, const char *argv[]) |
1c6a800c | 1150 | { |
e60770a0 ACM |
1151 | int i; |
1152 | ||
1153 | if (argc == 0) | |
1154 | return true; | |
1155 | ||
1156 | for (i = 0; i < argc; ++i) { | |
1157 | char *end; | |
1158 | long nr = strtoul(argv[i], &end, 10); | |
1159 | ||
1160 | if (*end == '\0') { | |
1161 | if (nr == curr + 1) | |
1162 | return true; | |
1163 | continue; | |
1164 | } | |
1c6a800c | 1165 | |
e60770a0 ACM |
1166 | if (strstr(tests[curr].desc, argv[i])) |
1167 | return true; | |
1168 | } | |
1169 | ||
1170 | return false; | |
1171 | } | |
1172 | ||
1173 | static int __cmd_test(int argc, const char *argv[]) | |
1174 | { | |
1175 | int i = 0; | |
1c6a800c ACM |
1176 | |
1177 | while (tests[i].func) { | |
e60770a0 ACM |
1178 | int curr = i++, err; |
1179 | ||
1180 | if (!perf_test__matches(curr, argc, argv)) | |
1181 | continue; | |
1182 | ||
1183 | pr_info("%2d: %s:", i, tests[curr].desc); | |
1c6a800c | 1184 | pr_debug("\n--- start ---\n"); |
e60770a0 ACM |
1185 | err = tests[curr].func(); |
1186 | pr_debug("---- end ----\n%s:", tests[curr].desc); | |
1c6a800c | 1187 | pr_info(" %s\n", err ? "FAILED!\n" : "Ok"); |
1c6a800c ACM |
1188 | } |
1189 | ||
1190 | return 0; | |
1191 | } | |
1192 | ||
e60770a0 ACM |
1193 | static int perf_test__list(int argc, const char **argv) |
1194 | { | |
1195 | int i = 0; | |
1196 | ||
1197 | while (tests[i].func) { | |
1198 | int curr = i++; | |
1199 | ||
1200 | if (argc > 1 && !strstr(tests[curr].desc, argv[1])) | |
1201 | continue; | |
1202 | ||
1203 | pr_info("%2d: %s\n", i, tests[curr].desc); | |
1204 | } | |
1205 | ||
1206 | return 0; | |
1207 | } | |
1c6a800c | 1208 | |
e60770a0 ACM |
1209 | int cmd_test(int argc, const char **argv, const char *prefix __used) |
1210 | { | |
1211 | const char * const test_usage[] = { | |
1212 | "perf test [<options>] [{list <test-name-fragment>|[<test-name-fragments>|<test-numbers>]}]", | |
1213 | NULL, | |
1214 | }; | |
1215 | const struct option test_options[] = { | |
c30ab8aa | 1216 | OPT_INCR('v', "verbose", &verbose, |
1c6a800c ACM |
1217 | "be more verbose (show symbol address, etc)"), |
1218 | OPT_END() | |
e60770a0 | 1219 | }; |
1c6a800c | 1220 | |
1c6a800c | 1221 | argc = parse_options(argc, argv, test_options, test_usage, 0); |
e60770a0 ACM |
1222 | if (argc >= 1 && !strcmp(argv[0], "list")) |
1223 | return perf_test__list(argc, argv); | |
1c6a800c ACM |
1224 | |
1225 | symbol_conf.priv_size = sizeof(int); | |
1226 | symbol_conf.sort_by_name = true; | |
1227 | symbol_conf.try_vmlinux_path = true; | |
1228 | ||
1229 | if (symbol__init() < 0) | |
1230 | return -1; | |
1231 | ||
e60770a0 | 1232 | return __cmd_test(argc, argv); |
1c6a800c | 1233 | } |