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 | ||
1d037ca1 IT |
21 | static int vmlinux_matches_kallsyms_filter(struct map *map __maybe_unused, |
22 | struct symbol *sym) | |
1c6a800c ACM |
23 | { |
24 | bool *visited = symbol__priv(sym); | |
25 | *visited = true; | |
26 | return 0; | |
27 | } | |
28 | ||
29 | static int test__vmlinux_matches_kallsyms(void) | |
30 | { | |
31 | int err = -1; | |
32 | struct rb_node *nd; | |
33 | struct symbol *sym; | |
34 | struct map *kallsyms_map, *vmlinux_map; | |
35 | struct machine kallsyms, vmlinux; | |
36 | enum map_type type = MAP__FUNCTION; | |
e60770a0 | 37 | long page_size = sysconf(_SC_PAGE_SIZE); |
1c6a800c ACM |
38 | struct ref_reloc_sym ref_reloc_sym = { .name = "_stext", }; |
39 | ||
40 | /* | |
41 | * Step 1: | |
42 | * | |
43 | * Init the machines that will hold kernel, modules obtained from | |
44 | * both vmlinux + .ko files and from /proc/kallsyms split by modules. | |
45 | */ | |
46 | machine__init(&kallsyms, "", HOST_KERNEL_ID); | |
47 | machine__init(&vmlinux, "", HOST_KERNEL_ID); | |
48 | ||
49 | /* | |
50 | * Step 2: | |
51 | * | |
52 | * Create the kernel maps for kallsyms and the DSO where we will then | |
53 | * load /proc/kallsyms. Also create the modules maps from /proc/modules | |
54 | * and find the .ko files that match them in /lib/modules/`uname -r`/. | |
55 | */ | |
56 | if (machine__create_kernel_maps(&kallsyms) < 0) { | |
57 | pr_debug("machine__create_kernel_maps "); | |
58 | return -1; | |
59 | } | |
60 | ||
61 | /* | |
62 | * Step 3: | |
63 | * | |
64 | * Load and split /proc/kallsyms into multiple maps, one per module. | |
65 | */ | |
66 | if (machine__load_kallsyms(&kallsyms, "/proc/kallsyms", type, NULL) <= 0) { | |
67 | pr_debug("dso__load_kallsyms "); | |
68 | goto out; | |
69 | } | |
70 | ||
71 | /* | |
72 | * Step 4: | |
73 | * | |
74 | * kallsyms will be internally on demand sorted by name so that we can | |
75 | * find the reference relocation * symbol, i.e. the symbol we will use | |
76 | * to see if the running kernel was relocated by checking if it has the | |
77 | * same value in the vmlinux file we load. | |
78 | */ | |
79 | kallsyms_map = machine__kernel_map(&kallsyms, type); | |
80 | ||
81 | sym = map__find_symbol_by_name(kallsyms_map, ref_reloc_sym.name, NULL); | |
82 | if (sym == NULL) { | |
83 | pr_debug("dso__find_symbol_by_name "); | |
84 | goto out; | |
85 | } | |
86 | ||
87 | ref_reloc_sym.addr = sym->start; | |
88 | ||
89 | /* | |
90 | * Step 5: | |
91 | * | |
92 | * Now repeat step 2, this time for the vmlinux file we'll auto-locate. | |
93 | */ | |
94 | if (machine__create_kernel_maps(&vmlinux) < 0) { | |
95 | pr_debug("machine__create_kernel_maps "); | |
96 | goto out; | |
97 | } | |
98 | ||
99 | vmlinux_map = machine__kernel_map(&vmlinux, type); | |
100 | map__kmap(vmlinux_map)->ref_reloc_sym = &ref_reloc_sym; | |
101 | ||
102 | /* | |
103 | * Step 6: | |
104 | * | |
105 | * Locate a vmlinux file in the vmlinux path that has a buildid that | |
106 | * matches the one of the running kernel. | |
107 | * | |
108 | * While doing that look if we find the ref reloc symbol, if we find it | |
109 | * we'll have its ref_reloc_symbol.unrelocated_addr and then | |
110 | * maps__reloc_vmlinux will notice and set proper ->[un]map_ip routines | |
111 | * to fixup the symbols. | |
112 | */ | |
113 | if (machine__load_vmlinux_path(&vmlinux, type, | |
114 | vmlinux_matches_kallsyms_filter) <= 0) { | |
115 | pr_debug("machine__load_vmlinux_path "); | |
116 | goto out; | |
117 | } | |
118 | ||
119 | err = 0; | |
120 | /* | |
121 | * Step 7: | |
122 | * | |
123 | * Now look at the symbols in the vmlinux DSO and check if we find all of them | |
124 | * in the kallsyms dso. For the ones that are in both, check its names and | |
125 | * end addresses too. | |
126 | */ | |
127 | for (nd = rb_first(&vmlinux_map->dso->symbols[type]); nd; nd = rb_next(nd)) { | |
d3678758 ACM |
128 | struct symbol *pair, *first_pair; |
129 | bool backwards = true; | |
1c6a800c ACM |
130 | |
131 | sym = rb_entry(nd, struct symbol, rb_node); | |
d3678758 ACM |
132 | |
133 | if (sym->start == sym->end) | |
134 | continue; | |
135 | ||
136 | first_pair = machine__find_kernel_symbol(&kallsyms, type, sym->start, NULL, NULL); | |
137 | pair = first_pair; | |
1c6a800c ACM |
138 | |
139 | if (pair && pair->start == sym->start) { | |
140 | next_pair: | |
141 | if (strcmp(sym->name, pair->name) == 0) { | |
142 | /* | |
143 | * kallsyms don't have the symbol end, so we | |
144 | * set that by using the next symbol start - 1, | |
145 | * in some cases we get this up to a page | |
146 | * wrong, trace_kmalloc when I was developing | |
147 | * this code was one such example, 2106 bytes | |
148 | * off the real size. More than that and we | |
149 | * _really_ have a problem. | |
150 | */ | |
151 | s64 skew = sym->end - pair->end; | |
152 | if (llabs(skew) < page_size) | |
153 | continue; | |
154 | ||
9486aa38 | 155 | pr_debug("%#" PRIx64 ": diff end addr for %s v: %#" PRIx64 " k: %#" PRIx64 "\n", |
1c6a800c ACM |
156 | sym->start, sym->name, sym->end, pair->end); |
157 | } else { | |
d3678758 ACM |
158 | struct rb_node *nnd; |
159 | detour: | |
160 | nnd = backwards ? rb_prev(&pair->rb_node) : | |
161 | rb_next(&pair->rb_node); | |
1c6a800c ACM |
162 | if (nnd) { |
163 | struct symbol *next = rb_entry(nnd, struct symbol, rb_node); | |
164 | ||
165 | if (next->start == sym->start) { | |
166 | pair = next; | |
167 | goto next_pair; | |
168 | } | |
169 | } | |
d3678758 ACM |
170 | |
171 | if (backwards) { | |
172 | backwards = false; | |
173 | pair = first_pair; | |
174 | goto detour; | |
175 | } | |
176 | ||
9486aa38 | 177 | pr_debug("%#" PRIx64 ": diff name v: %s k: %s\n", |
1c6a800c ACM |
178 | sym->start, sym->name, pair->name); |
179 | } | |
180 | } else | |
9486aa38 | 181 | pr_debug("%#" PRIx64 ": %s not on kallsyms\n", sym->start, sym->name); |
1c6a800c ACM |
182 | |
183 | err = -1; | |
184 | } | |
185 | ||
186 | if (!verbose) | |
187 | goto out; | |
188 | ||
189 | pr_info("Maps only in vmlinux:\n"); | |
190 | ||
191 | for (nd = rb_first(&vmlinux.kmaps.maps[type]); nd; nd = rb_next(nd)) { | |
192 | struct map *pos = rb_entry(nd, struct map, rb_node), *pair; | |
193 | /* | |
194 | * If it is the kernel, kallsyms is always "[kernel.kallsyms]", while | |
195 | * the kernel will have the path for the vmlinux file being used, | |
196 | * so use the short name, less descriptive but the same ("[kernel]" in | |
197 | * both cases. | |
198 | */ | |
199 | pair = map_groups__find_by_name(&kallsyms.kmaps, type, | |
200 | (pos->dso->kernel ? | |
201 | pos->dso->short_name : | |
202 | pos->dso->name)); | |
203 | if (pair) | |
204 | pair->priv = 1; | |
205 | else | |
206 | map__fprintf(pos, stderr); | |
207 | } | |
208 | ||
209 | pr_info("Maps in vmlinux with a different name in kallsyms:\n"); | |
210 | ||
211 | for (nd = rb_first(&vmlinux.kmaps.maps[type]); nd; nd = rb_next(nd)) { | |
212 | struct map *pos = rb_entry(nd, struct map, rb_node), *pair; | |
213 | ||
214 | pair = map_groups__find(&kallsyms.kmaps, type, pos->start); | |
215 | if (pair == NULL || pair->priv) | |
216 | continue; | |
217 | ||
218 | if (pair->start == pos->start) { | |
219 | pair->priv = 1; | |
9486aa38 | 220 | pr_info(" %" PRIx64 "-%" PRIx64 " %" PRIx64 " %s in kallsyms as", |
1c6a800c ACM |
221 | pos->start, pos->end, pos->pgoff, pos->dso->name); |
222 | if (pos->pgoff != pair->pgoff || pos->end != pair->end) | |
9486aa38 | 223 | pr_info(": \n*%" PRIx64 "-%" PRIx64 " %" PRIx64 "", |
1c6a800c ACM |
224 | pair->start, pair->end, pair->pgoff); |
225 | pr_info(" %s\n", pair->dso->name); | |
226 | pair->priv = 1; | |
227 | } | |
228 | } | |
229 | ||
230 | pr_info("Maps only in kallsyms:\n"); | |
231 | ||
232 | for (nd = rb_first(&kallsyms.kmaps.maps[type]); | |
233 | nd; nd = rb_next(nd)) { | |
234 | struct map *pos = rb_entry(nd, struct map, rb_node); | |
235 | ||
236 | if (!pos->priv) | |
237 | map__fprintf(pos, stderr); | |
238 | } | |
239 | out: | |
240 | return err; | |
241 | } | |
242 | ||
0252208e | 243 | #include "util/cpumap.h" |
d854861c ACM |
244 | #include "util/evsel.h" |
245 | #include <sys/types.h> | |
246 | ||
de5fa3a8 | 247 | static int trace_event__id(const char *evname) |
d854861c ACM |
248 | { |
249 | char *filename; | |
250 | int err = -1, fd; | |
251 | ||
252 | if (asprintf(&filename, | |
baf040a0 | 253 | "%s/syscalls/%s/id", |
ebf294bf | 254 | tracing_events_path, evname) < 0) |
d854861c ACM |
255 | return -1; |
256 | ||
257 | fd = open(filename, O_RDONLY); | |
258 | if (fd >= 0) { | |
259 | char id[16]; | |
260 | if (read(fd, id, sizeof(id)) > 0) | |
261 | err = atoi(id); | |
262 | close(fd); | |
263 | } | |
264 | ||
265 | free(filename); | |
266 | return err; | |
267 | } | |
268 | ||
269 | static int test__open_syscall_event(void) | |
270 | { | |
271 | int err = -1, fd; | |
272 | struct thread_map *threads; | |
273 | struct perf_evsel *evsel; | |
23a2f3ab | 274 | struct perf_event_attr attr; |
d854861c ACM |
275 | unsigned int nr_open_calls = 111, i; |
276 | int id = trace_event__id("sys_enter_open"); | |
277 | ||
278 | if (id < 0) { | |
454a3bbe | 279 | pr_debug("is debugfs mounted on /sys/kernel/debug?\n"); |
d854861c ACM |
280 | return -1; |
281 | } | |
282 | ||
0d37aa34 | 283 | threads = thread_map__new(-1, getpid(), UINT_MAX); |
d854861c | 284 | if (threads == NULL) { |
454a3bbe | 285 | pr_debug("thread_map__new\n"); |
d854861c ACM |
286 | return -1; |
287 | } | |
288 | ||
23a2f3ab LM |
289 | memset(&attr, 0, sizeof(attr)); |
290 | attr.type = PERF_TYPE_TRACEPOINT; | |
291 | attr.config = id; | |
292 | evsel = perf_evsel__new(&attr, 0); | |
d854861c | 293 | if (evsel == NULL) { |
454a3bbe | 294 | pr_debug("perf_evsel__new\n"); |
d854861c ACM |
295 | goto out_thread_map_delete; |
296 | } | |
297 | ||
6a4bb04c | 298 | if (perf_evsel__open_per_thread(evsel, threads) < 0) { |
454a3bbe ACM |
299 | pr_debug("failed to open counter: %s, " |
300 | "tweak /proc/sys/kernel/perf_event_paranoid?\n", | |
301 | strerror(errno)); | |
d854861c ACM |
302 | goto out_evsel_delete; |
303 | } | |
304 | ||
305 | for (i = 0; i < nr_open_calls; ++i) { | |
306 | fd = open("/etc/passwd", O_RDONLY); | |
307 | close(fd); | |
308 | } | |
309 | ||
310 | if (perf_evsel__read_on_cpu(evsel, 0, 0) < 0) { | |
5d2cd909 | 311 | pr_debug("perf_evsel__read_on_cpu\n"); |
d854861c ACM |
312 | goto out_close_fd; |
313 | } | |
314 | ||
454a3bbe | 315 | if (evsel->counts->cpu[0].val != nr_open_calls) { |
9486aa38 | 316 | pr_debug("perf_evsel__read_on_cpu: expected to intercept %d calls, got %" PRIu64 "\n", |
d854861c | 317 | nr_open_calls, evsel->counts->cpu[0].val); |
454a3bbe ACM |
318 | goto out_close_fd; |
319 | } | |
d854861c ACM |
320 | |
321 | err = 0; | |
322 | out_close_fd: | |
323 | perf_evsel__close_fd(evsel, 1, threads->nr); | |
324 | out_evsel_delete: | |
325 | perf_evsel__delete(evsel); | |
326 | out_thread_map_delete: | |
327 | thread_map__delete(threads); | |
328 | return err; | |
329 | } | |
330 | ||
0252208e ACM |
331 | #include <sched.h> |
332 | ||
333 | static int test__open_syscall_event_on_all_cpus(void) | |
334 | { | |
335 | int err = -1, fd, cpu; | |
336 | struct thread_map *threads; | |
337 | struct cpu_map *cpus; | |
338 | struct perf_evsel *evsel; | |
339 | struct perf_event_attr attr; | |
340 | unsigned int nr_open_calls = 111, i; | |
57b84e53 | 341 | cpu_set_t cpu_set; |
0252208e ACM |
342 | int id = trace_event__id("sys_enter_open"); |
343 | ||
344 | if (id < 0) { | |
345 | pr_debug("is debugfs mounted on /sys/kernel/debug?\n"); | |
346 | return -1; | |
347 | } | |
348 | ||
0d37aa34 | 349 | threads = thread_map__new(-1, getpid(), UINT_MAX); |
0252208e ACM |
350 | if (threads == NULL) { |
351 | pr_debug("thread_map__new\n"); | |
352 | return -1; | |
353 | } | |
354 | ||
355 | cpus = cpu_map__new(NULL); | |
98d77b78 HP |
356 | if (cpus == NULL) { |
357 | pr_debug("cpu_map__new\n"); | |
358 | goto out_thread_map_delete; | |
0252208e ACM |
359 | } |
360 | ||
0252208e | 361 | |
57b84e53 | 362 | CPU_ZERO(&cpu_set); |
0252208e ACM |
363 | |
364 | memset(&attr, 0, sizeof(attr)); | |
365 | attr.type = PERF_TYPE_TRACEPOINT; | |
366 | attr.config = id; | |
367 | evsel = perf_evsel__new(&attr, 0); | |
368 | if (evsel == NULL) { | |
369 | pr_debug("perf_evsel__new\n"); | |
57b84e53 | 370 | goto out_thread_map_delete; |
0252208e ACM |
371 | } |
372 | ||
6a4bb04c | 373 | if (perf_evsel__open(evsel, cpus, threads) < 0) { |
0252208e ACM |
374 | pr_debug("failed to open counter: %s, " |
375 | "tweak /proc/sys/kernel/perf_event_paranoid?\n", | |
376 | strerror(errno)); | |
377 | goto out_evsel_delete; | |
378 | } | |
379 | ||
380 | for (cpu = 0; cpu < cpus->nr; ++cpu) { | |
381 | unsigned int ncalls = nr_open_calls + cpu; | |
57b84e53 ACM |
382 | /* |
383 | * XXX eventually lift this restriction in a way that | |
384 | * keeps perf building on older glibc installations | |
385 | * without CPU_ALLOC. 1024 cpus in 2010 still seems | |
386 | * a reasonable upper limit tho :-) | |
387 | */ | |
388 | if (cpus->map[cpu] >= CPU_SETSIZE) { | |
389 | pr_debug("Ignoring CPU %d\n", cpus->map[cpu]); | |
390 | continue; | |
391 | } | |
0252208e | 392 | |
57b84e53 ACM |
393 | CPU_SET(cpus->map[cpu], &cpu_set); |
394 | if (sched_setaffinity(0, sizeof(cpu_set), &cpu_set) < 0) { | |
ffb5e0fb HP |
395 | pr_debug("sched_setaffinity() failed on CPU %d: %s ", |
396 | cpus->map[cpu], | |
397 | strerror(errno)); | |
398 | goto out_close_fd; | |
399 | } | |
0252208e ACM |
400 | for (i = 0; i < ncalls; ++i) { |
401 | fd = open("/etc/passwd", O_RDONLY); | |
402 | close(fd); | |
403 | } | |
57b84e53 | 404 | CPU_CLR(cpus->map[cpu], &cpu_set); |
0252208e ACM |
405 | } |
406 | ||
407 | /* | |
408 | * Here we need to explicitely preallocate the counts, as if | |
409 | * we use the auto allocation it will allocate just for 1 cpu, | |
410 | * as we start by cpu 0. | |
411 | */ | |
412 | if (perf_evsel__alloc_counts(evsel, cpus->nr) < 0) { | |
413 | pr_debug("perf_evsel__alloc_counts(ncpus=%d)\n", cpus->nr); | |
414 | goto out_close_fd; | |
415 | } | |
416 | ||
d2af9687 ACM |
417 | err = 0; |
418 | ||
0252208e ACM |
419 | for (cpu = 0; cpu < cpus->nr; ++cpu) { |
420 | unsigned int expected; | |
421 | ||
57b84e53 ACM |
422 | if (cpus->map[cpu] >= CPU_SETSIZE) |
423 | continue; | |
424 | ||
0252208e | 425 | if (perf_evsel__read_on_cpu(evsel, cpu, 0) < 0) { |
5d2cd909 | 426 | pr_debug("perf_evsel__read_on_cpu\n"); |
d2af9687 ACM |
427 | err = -1; |
428 | break; | |
0252208e ACM |
429 | } |
430 | ||
431 | expected = nr_open_calls + cpu; | |
432 | if (evsel->counts->cpu[cpu].val != expected) { | |
9486aa38 | 433 | pr_debug("perf_evsel__read_on_cpu: expected to intercept %d calls on cpu %d, got %" PRIu64 "\n", |
ffb5e0fb | 434 | expected, cpus->map[cpu], evsel->counts->cpu[cpu].val); |
d2af9687 | 435 | err = -1; |
0252208e ACM |
436 | } |
437 | } | |
438 | ||
0252208e ACM |
439 | out_close_fd: |
440 | perf_evsel__close_fd(evsel, 1, threads->nr); | |
441 | out_evsel_delete: | |
442 | perf_evsel__delete(evsel); | |
0252208e ACM |
443 | out_thread_map_delete: |
444 | thread_map__delete(threads); | |
445 | return err; | |
446 | } | |
447 | ||
de5fa3a8 ACM |
448 | /* |
449 | * This test will generate random numbers of calls to some getpid syscalls, | |
450 | * then establish an mmap for a group of events that are created to monitor | |
451 | * the syscalls. | |
452 | * | |
453 | * It will receive the events, using mmap, use its PERF_SAMPLE_ID generated | |
454 | * sample.id field to map back to its respective perf_evsel instance. | |
455 | * | |
456 | * Then it checks if the number of syscalls reported as perf events by | |
457 | * the kernel corresponds to the number of syscalls made. | |
458 | */ | |
459 | static int test__basic_mmap(void) | |
460 | { | |
461 | int err = -1; | |
8115d60c | 462 | union perf_event *event; |
de5fa3a8 | 463 | struct thread_map *threads; |
de5fa3a8 ACM |
464 | struct cpu_map *cpus; |
465 | struct perf_evlist *evlist; | |
466 | struct perf_event_attr attr = { | |
467 | .type = PERF_TYPE_TRACEPOINT, | |
468 | .read_format = PERF_FORMAT_ID, | |
469 | .sample_type = PERF_SAMPLE_ID, | |
470 | .watermark = 0, | |
471 | }; | |
472 | cpu_set_t cpu_set; | |
473 | const char *syscall_names[] = { "getsid", "getppid", "getpgrp", | |
474 | "getpgid", }; | |
475 | pid_t (*syscalls[])(void) = { (void *)getsid, getppid, getpgrp, | |
476 | (void*)getpgid }; | |
477 | #define nsyscalls ARRAY_SIZE(syscall_names) | |
478 | int ids[nsyscalls]; | |
479 | unsigned int nr_events[nsyscalls], | |
480 | expected_nr_events[nsyscalls], i, j; | |
481 | struct perf_evsel *evsels[nsyscalls], *evsel; | |
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 | ||
6a4bb04c | 537 | if (perf_evsel__open(evsels[i], cpus, threads) < 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 | ||
cb0b29e0 | 566 | err = perf_evlist__parse_sample(evlist, event, &sample, false); |
5538beca FW |
567 | if (err) { |
568 | pr_err("Can't parse sample, err = %d\n", err); | |
569 | goto out_munmap; | |
570 | } | |
571 | ||
de5fa3a8 ACM |
572 | evsel = perf_evlist__id2evsel(evlist, sample.id); |
573 | if (evsel == NULL) { | |
574 | pr_debug("event with id %" PRIu64 | |
575 | " doesn't map to an evsel\n", sample.id); | |
576 | goto out_munmap; | |
577 | } | |
578 | nr_events[evsel->idx]++; | |
579 | } | |
580 | ||
581 | list_for_each_entry(evsel, &evlist->entries, node) { | |
582 | if (nr_events[evsel->idx] != expected_nr_events[evsel->idx]) { | |
583 | pr_debug("expected %d %s events, got %d\n", | |
584 | expected_nr_events[evsel->idx], | |
7289f83c | 585 | perf_evsel__name(evsel), nr_events[evsel->idx]); |
de5fa3a8 ACM |
586 | goto out_munmap; |
587 | } | |
588 | } | |
589 | ||
590 | err = 0; | |
591 | out_munmap: | |
7e2ed097 | 592 | perf_evlist__munmap(evlist); |
de5fa3a8 ACM |
593 | out_close_fd: |
594 | for (i = 0; i < nsyscalls; ++i) | |
595 | perf_evsel__close_fd(evsels[i], 1, threads->nr); | |
596 | out_free_evlist: | |
597 | perf_evlist__delete(evlist); | |
598 | out_free_cpus: | |
599 | cpu_map__delete(cpus); | |
600 | out_free_threads: | |
601 | thread_map__delete(threads); | |
602 | return err; | |
603 | #undef nsyscalls | |
604 | } | |
605 | ||
3e7c439a ACM |
606 | static int sched__get_first_possible_cpu(pid_t pid, cpu_set_t **maskp, |
607 | size_t *sizep) | |
608 | { | |
609 | cpu_set_t *mask; | |
610 | size_t size; | |
611 | int i, cpu = -1, nrcpus = 1024; | |
612 | realloc: | |
613 | mask = CPU_ALLOC(nrcpus); | |
614 | size = CPU_ALLOC_SIZE(nrcpus); | |
615 | CPU_ZERO_S(size, mask); | |
616 | ||
617 | if (sched_getaffinity(pid, size, mask) == -1) { | |
618 | CPU_FREE(mask); | |
619 | if (errno == EINVAL && nrcpus < (1024 << 8)) { | |
620 | nrcpus = nrcpus << 2; | |
621 | goto realloc; | |
622 | } | |
623 | perror("sched_getaffinity"); | |
624 | return -1; | |
625 | } | |
626 | ||
627 | for (i = 0; i < nrcpus; i++) { | |
628 | if (CPU_ISSET_S(i, size, mask)) { | |
629 | if (cpu == -1) { | |
630 | cpu = i; | |
631 | *maskp = mask; | |
632 | *sizep = size; | |
633 | } else | |
634 | CPU_CLR_S(i, size, mask); | |
635 | } | |
636 | } | |
637 | ||
638 | if (cpu == -1) | |
639 | CPU_FREE(mask); | |
640 | ||
641 | return cpu; | |
642 | } | |
643 | ||
644 | static int test__PERF_RECORD(void) | |
645 | { | |
646 | struct perf_record_opts opts = { | |
b809ac10 NK |
647 | .target = { |
648 | .uid = UINT_MAX, | |
d1cb9fce | 649 | .uses_mmap = true, |
b809ac10 | 650 | }, |
3e7c439a ACM |
651 | .no_delay = true, |
652 | .freq = 10, | |
653 | .mmap_pages = 256, | |
3e7c439a ACM |
654 | }; |
655 | cpu_set_t *cpu_mask = NULL; | |
656 | size_t cpu_mask_size = 0; | |
657 | struct perf_evlist *evlist = perf_evlist__new(NULL, NULL); | |
658 | struct perf_evsel *evsel; | |
659 | struct perf_sample sample; | |
660 | const char *cmd = "sleep"; | |
661 | const char *argv[] = { cmd, "1", NULL, }; | |
662 | char *bname; | |
7f3be652 | 663 | u64 prev_time = 0; |
3e7c439a ACM |
664 | bool found_cmd_mmap = false, |
665 | found_libc_mmap = false, | |
666 | found_vdso_mmap = false, | |
667 | found_ld_mmap = false; | |
bde09467 | 668 | int err = -1, errs = 0, i, wakeups = 0; |
3e7c439a ACM |
669 | u32 cpu; |
670 | int total_events = 0, nr_events[PERF_RECORD_MAX] = { 0, }; | |
671 | ||
672 | if (evlist == NULL || argv == NULL) { | |
673 | pr_debug("Not enough memory to create evlist\n"); | |
674 | goto out; | |
675 | } | |
676 | ||
677 | /* | |
678 | * We need at least one evsel in the evlist, use the default | |
679 | * one: "cycles". | |
680 | */ | |
681 | err = perf_evlist__add_default(evlist); | |
682 | if (err < 0) { | |
683 | pr_debug("Not enough memory to create evsel\n"); | |
684 | goto out_delete_evlist; | |
685 | } | |
686 | ||
687 | /* | |
688 | * Create maps of threads and cpus to monitor. In this case | |
689 | * we start with all threads and cpus (-1, -1) but then in | |
690 | * perf_evlist__prepare_workload we'll fill in the only thread | |
691 | * we're monitoring, the one forked there. | |
692 | */ | |
b809ac10 | 693 | err = perf_evlist__create_maps(evlist, &opts.target); |
3e7c439a ACM |
694 | if (err < 0) { |
695 | pr_debug("Not enough memory to create thread/cpu maps\n"); | |
696 | goto out_delete_evlist; | |
697 | } | |
698 | ||
699 | /* | |
700 | * Prepare the workload in argv[] to run, it'll fork it, and then wait | |
701 | * for perf_evlist__start_workload() to exec it. This is done this way | |
702 | * so that we have time to open the evlist (calling sys_perf_event_open | |
703 | * on all the fds) and then mmap them. | |
704 | */ | |
705 | err = perf_evlist__prepare_workload(evlist, &opts, argv); | |
706 | if (err < 0) { | |
707 | pr_debug("Couldn't run the workload!\n"); | |
708 | goto out_delete_evlist; | |
709 | } | |
710 | ||
711 | /* | |
712 | * Config the evsels, setting attr->comm on the first one, etc. | |
713 | */ | |
0c21f736 | 714 | evsel = perf_evlist__first(evlist); |
3e7c439a ACM |
715 | evsel->attr.sample_type |= PERF_SAMPLE_CPU; |
716 | evsel->attr.sample_type |= PERF_SAMPLE_TID; | |
717 | evsel->attr.sample_type |= PERF_SAMPLE_TIME; | |
718 | perf_evlist__config_attrs(evlist, &opts); | |
719 | ||
720 | err = sched__get_first_possible_cpu(evlist->workload.pid, &cpu_mask, | |
721 | &cpu_mask_size); | |
722 | if (err < 0) { | |
723 | pr_debug("sched__get_first_possible_cpu: %s\n", strerror(errno)); | |
724 | goto out_delete_evlist; | |
725 | } | |
726 | ||
727 | cpu = err; | |
728 | ||
729 | /* | |
730 | * So that we can check perf_sample.cpu on all the samples. | |
731 | */ | |
732 | if (sched_setaffinity(evlist->workload.pid, cpu_mask_size, cpu_mask) < 0) { | |
733 | pr_debug("sched_setaffinity: %s\n", strerror(errno)); | |
734 | goto out_free_cpu_mask; | |
735 | } | |
736 | ||
737 | /* | |
738 | * Call sys_perf_event_open on all the fds on all the evsels, | |
739 | * grouping them if asked to. | |
740 | */ | |
6a4bb04c | 741 | err = perf_evlist__open(evlist); |
3e7c439a ACM |
742 | if (err < 0) { |
743 | pr_debug("perf_evlist__open: %s\n", strerror(errno)); | |
744 | goto out_delete_evlist; | |
745 | } | |
746 | ||
747 | /* | |
748 | * mmap the first fd on a given CPU and ask for events for the other | |
749 | * fds in the same CPU to be injected in the same mmap ring buffer | |
750 | * (using ioctl(PERF_EVENT_IOC_SET_OUTPUT)). | |
751 | */ | |
752 | err = perf_evlist__mmap(evlist, opts.mmap_pages, false); | |
753 | if (err < 0) { | |
754 | pr_debug("perf_evlist__mmap: %s\n", strerror(errno)); | |
755 | goto out_delete_evlist; | |
756 | } | |
757 | ||
3e7c439a ACM |
758 | /* |
759 | * Now that all is properly set up, enable the events, they will | |
760 | * count just on workload.pid, which will start... | |
761 | */ | |
762 | perf_evlist__enable(evlist); | |
763 | ||
764 | /* | |
765 | * Now! | |
766 | */ | |
767 | perf_evlist__start_workload(evlist); | |
768 | ||
3e7c439a ACM |
769 | while (1) { |
770 | int before = total_events; | |
771 | ||
772 | for (i = 0; i < evlist->nr_mmaps; i++) { | |
773 | union perf_event *event; | |
774 | ||
775 | while ((event = perf_evlist__mmap_read(evlist, i)) != NULL) { | |
776 | const u32 type = event->header.type; | |
777 | const char *name = perf_event__name(type); | |
778 | ||
779 | ++total_events; | |
780 | if (type < PERF_RECORD_MAX) | |
781 | nr_events[type]++; | |
782 | ||
cb0b29e0 | 783 | err = perf_evlist__parse_sample(evlist, event, &sample, false); |
f71c49e5 | 784 | if (err < 0) { |
3e7c439a ACM |
785 | if (verbose) |
786 | perf_event__fprintf(event, stderr); | |
787 | pr_debug("Couldn't parse sample\n"); | |
788 | goto out_err; | |
789 | } | |
790 | ||
791 | if (verbose) { | |
792 | pr_info("%" PRIu64" %d ", sample.time, sample.cpu); | |
793 | perf_event__fprintf(event, stderr); | |
794 | } | |
795 | ||
796 | if (prev_time > sample.time) { | |
797 | pr_debug("%s going backwards in time, prev=%" PRIu64 ", curr=%" PRIu64 "\n", | |
798 | name, prev_time, sample.time); | |
f71c49e5 | 799 | ++errs; |
3e7c439a ACM |
800 | } |
801 | ||
802 | prev_time = sample.time; | |
803 | ||
804 | if (sample.cpu != cpu) { | |
805 | pr_debug("%s with unexpected cpu, expected %d, got %d\n", | |
806 | name, cpu, sample.cpu); | |
f71c49e5 | 807 | ++errs; |
3e7c439a ACM |
808 | } |
809 | ||
810 | if ((pid_t)sample.pid != evlist->workload.pid) { | |
811 | pr_debug("%s with unexpected pid, expected %d, got %d\n", | |
812 | name, evlist->workload.pid, sample.pid); | |
f71c49e5 | 813 | ++errs; |
3e7c439a ACM |
814 | } |
815 | ||
816 | if ((pid_t)sample.tid != evlist->workload.pid) { | |
817 | pr_debug("%s with unexpected tid, expected %d, got %d\n", | |
818 | name, evlist->workload.pid, sample.tid); | |
f71c49e5 | 819 | ++errs; |
3e7c439a ACM |
820 | } |
821 | ||
822 | if ((type == PERF_RECORD_COMM || | |
823 | type == PERF_RECORD_MMAP || | |
824 | type == PERF_RECORD_FORK || | |
825 | type == PERF_RECORD_EXIT) && | |
826 | (pid_t)event->comm.pid != evlist->workload.pid) { | |
827 | pr_debug("%s with unexpected pid/tid\n", name); | |
f71c49e5 | 828 | ++errs; |
3e7c439a ACM |
829 | } |
830 | ||
831 | if ((type == PERF_RECORD_COMM || | |
832 | type == PERF_RECORD_MMAP) && | |
833 | event->comm.pid != event->comm.tid) { | |
834 | pr_debug("%s with different pid/tid!\n", name); | |
f71c49e5 | 835 | ++errs; |
3e7c439a ACM |
836 | } |
837 | ||
838 | switch (type) { | |
839 | case PERF_RECORD_COMM: | |
840 | if (strcmp(event->comm.comm, cmd)) { | |
841 | pr_debug("%s with unexpected comm!\n", name); | |
f71c49e5 | 842 | ++errs; |
3e7c439a ACM |
843 | } |
844 | break; | |
845 | case PERF_RECORD_EXIT: | |
846 | goto found_exit; | |
847 | case PERF_RECORD_MMAP: | |
848 | bname = strrchr(event->mmap.filename, '/'); | |
849 | if (bname != NULL) { | |
850 | if (!found_cmd_mmap) | |
851 | found_cmd_mmap = !strcmp(bname + 1, cmd); | |
852 | if (!found_libc_mmap) | |
853 | found_libc_mmap = !strncmp(bname + 1, "libc", 4); | |
854 | if (!found_ld_mmap) | |
855 | found_ld_mmap = !strncmp(bname + 1, "ld", 2); | |
856 | } else if (!found_vdso_mmap) | |
857 | found_vdso_mmap = !strcmp(event->mmap.filename, "[vdso]"); | |
858 | break; | |
859 | ||
860 | case PERF_RECORD_SAMPLE: | |
861 | /* Just ignore samples for now */ | |
862 | break; | |
863 | default: | |
864 | pr_debug("Unexpected perf_event->header.type %d!\n", | |
865 | type); | |
f71c49e5 | 866 | ++errs; |
3e7c439a ACM |
867 | } |
868 | } | |
869 | } | |
870 | ||
871 | /* | |
872 | * We don't use poll here because at least at 3.1 times the | |
873 | * PERF_RECORD_{!SAMPLE} events don't honour | |
874 | * perf_event_attr.wakeup_events, just PERF_EVENT_SAMPLE does. | |
875 | */ | |
876 | if (total_events == before && false) | |
877 | poll(evlist->pollfd, evlist->nr_fds, -1); | |
878 | ||
879 | sleep(1); | |
880 | if (++wakeups > 5) { | |
881 | pr_debug("No PERF_RECORD_EXIT event!\n"); | |
f71c49e5 | 882 | break; |
3e7c439a ACM |
883 | } |
884 | } | |
885 | ||
886 | found_exit: | |
887 | if (nr_events[PERF_RECORD_COMM] > 1) { | |
888 | pr_debug("Excessive number of PERF_RECORD_COMM events!\n"); | |
f71c49e5 | 889 | ++errs; |
3e7c439a ACM |
890 | } |
891 | ||
892 | if (nr_events[PERF_RECORD_COMM] == 0) { | |
893 | pr_debug("Missing PERF_RECORD_COMM for %s!\n", cmd); | |
f71c49e5 | 894 | ++errs; |
3e7c439a ACM |
895 | } |
896 | ||
897 | if (!found_cmd_mmap) { | |
898 | pr_debug("PERF_RECORD_MMAP for %s missing!\n", cmd); | |
f71c49e5 | 899 | ++errs; |
3e7c439a ACM |
900 | } |
901 | ||
902 | if (!found_libc_mmap) { | |
903 | pr_debug("PERF_RECORD_MMAP for %s missing!\n", "libc"); | |
f71c49e5 | 904 | ++errs; |
3e7c439a ACM |
905 | } |
906 | ||
907 | if (!found_ld_mmap) { | |
908 | pr_debug("PERF_RECORD_MMAP for %s missing!\n", "ld"); | |
f71c49e5 | 909 | ++errs; |
3e7c439a ACM |
910 | } |
911 | ||
912 | if (!found_vdso_mmap) { | |
913 | pr_debug("PERF_RECORD_MMAP for %s missing!\n", "[vdso]"); | |
f71c49e5 | 914 | ++errs; |
3e7c439a | 915 | } |
3e7c439a ACM |
916 | out_err: |
917 | perf_evlist__munmap(evlist); | |
918 | out_free_cpu_mask: | |
919 | CPU_FREE(cpu_mask); | |
920 | out_delete_evlist: | |
921 | perf_evlist__delete(evlist); | |
922 | out: | |
f71c49e5 | 923 | return (err < 0 || errs > 0) ? -1 : 0; |
3e7c439a ACM |
924 | } |
925 | ||
08aa0d1f PZ |
926 | |
927 | #if defined(__x86_64__) || defined(__i386__) | |
928 | ||
929 | #define barrier() asm volatile("" ::: "memory") | |
930 | ||
931 | static u64 rdpmc(unsigned int counter) | |
932 | { | |
933 | unsigned int low, high; | |
934 | ||
935 | asm volatile("rdpmc" : "=a" (low), "=d" (high) : "c" (counter)); | |
936 | ||
937 | return low | ((u64)high) << 32; | |
938 | } | |
939 | ||
940 | static u64 rdtsc(void) | |
941 | { | |
942 | unsigned int low, high; | |
943 | ||
944 | asm volatile("rdtsc" : "=a" (low), "=d" (high)); | |
945 | ||
946 | return low | ((u64)high) << 32; | |
947 | } | |
948 | ||
949 | static u64 mmap_read_self(void *addr) | |
950 | { | |
951 | struct perf_event_mmap_page *pc = addr; | |
952 | u32 seq, idx, time_mult = 0, time_shift = 0; | |
953 | u64 count, cyc = 0, time_offset = 0, enabled, running, delta; | |
954 | ||
955 | do { | |
956 | seq = pc->lock; | |
957 | barrier(); | |
958 | ||
959 | enabled = pc->time_enabled; | |
960 | running = pc->time_running; | |
961 | ||
962 | if (enabled != running) { | |
963 | cyc = rdtsc(); | |
964 | time_mult = pc->time_mult; | |
965 | time_shift = pc->time_shift; | |
966 | time_offset = pc->time_offset; | |
967 | } | |
968 | ||
969 | idx = pc->index; | |
970 | count = pc->offset; | |
971 | if (idx) | |
972 | count += rdpmc(idx - 1); | |
973 | ||
974 | barrier(); | |
975 | } while (pc->lock != seq); | |
976 | ||
977 | if (enabled != running) { | |
978 | u64 quot, rem; | |
979 | ||
980 | quot = (cyc >> time_shift); | |
981 | rem = cyc & ((1 << time_shift) - 1); | |
982 | delta = time_offset + quot * time_mult + | |
983 | ((rem * time_mult) >> time_shift); | |
984 | ||
985 | enabled += delta; | |
986 | if (idx) | |
987 | running += delta; | |
988 | ||
989 | quot = count / running; | |
990 | rem = count % running; | |
991 | count = quot * enabled + (rem * enabled) / running; | |
992 | } | |
993 | ||
994 | return count; | |
995 | } | |
996 | ||
997 | /* | |
998 | * If the RDPMC instruction faults then signal this back to the test parent task: | |
999 | */ | |
1d037ca1 IT |
1000 | static void segfault_handler(int sig __maybe_unused, |
1001 | siginfo_t *info __maybe_unused, | |
1002 | void *uc __maybe_unused) | |
08aa0d1f PZ |
1003 | { |
1004 | exit(-1); | |
1005 | } | |
1006 | ||
1007 | static int __test__rdpmc(void) | |
1008 | { | |
1009 | long page_size = sysconf(_SC_PAGE_SIZE); | |
1010 | volatile int tmp = 0; | |
1011 | u64 i, loops = 1000; | |
1012 | int n; | |
1013 | int fd; | |
1014 | void *addr; | |
1015 | struct perf_event_attr attr = { | |
1016 | .type = PERF_TYPE_HARDWARE, | |
1017 | .config = PERF_COUNT_HW_INSTRUCTIONS, | |
1018 | .exclude_kernel = 1, | |
1019 | }; | |
1020 | u64 delta_sum = 0; | |
1021 | struct sigaction sa; | |
1022 | ||
1023 | sigfillset(&sa.sa_mask); | |
1024 | sa.sa_sigaction = segfault_handler; | |
1025 | sigaction(SIGSEGV, &sa, NULL); | |
1026 | ||
08aa0d1f PZ |
1027 | fd = sys_perf_event_open(&attr, 0, -1, -1, 0); |
1028 | if (fd < 0) { | |
32c7f738 ACM |
1029 | pr_debug("Error: sys_perf_event_open() syscall returned " |
1030 | "with %d (%s)\n", fd, strerror(errno)); | |
1031 | return -1; | |
08aa0d1f PZ |
1032 | } |
1033 | ||
1034 | addr = mmap(NULL, page_size, PROT_READ, MAP_SHARED, fd, 0); | |
1035 | if (addr == (void *)(-1)) { | |
32c7f738 ACM |
1036 | pr_debug("Error: mmap() syscall returned with (%s)\n", |
1037 | strerror(errno)); | |
1038 | goto out_close; | |
08aa0d1f PZ |
1039 | } |
1040 | ||
1041 | for (n = 0; n < 6; n++) { | |
1042 | u64 stamp, now, delta; | |
1043 | ||
1044 | stamp = mmap_read_self(addr); | |
1045 | ||
1046 | for (i = 0; i < loops; i++) | |
1047 | tmp++; | |
1048 | ||
1049 | now = mmap_read_self(addr); | |
1050 | loops *= 10; | |
1051 | ||
1052 | delta = now - stamp; | |
23080e4c | 1053 | pr_debug("%14d: %14Lu\n", n, (long long)delta); |
08aa0d1f PZ |
1054 | |
1055 | delta_sum += delta; | |
1056 | } | |
1057 | ||
1058 | munmap(addr, page_size); | |
23080e4c | 1059 | pr_debug(" "); |
32c7f738 ACM |
1060 | out_close: |
1061 | close(fd); | |
08aa0d1f PZ |
1062 | |
1063 | if (!delta_sum) | |
1064 | return -1; | |
1065 | ||
1066 | return 0; | |
1067 | } | |
1068 | ||
1069 | static int test__rdpmc(void) | |
1070 | { | |
1071 | int status = 0; | |
1072 | int wret = 0; | |
1073 | int ret; | |
1074 | int pid; | |
1075 | ||
1076 | pid = fork(); | |
1077 | if (pid < 0) | |
1078 | return -1; | |
1079 | ||
1080 | if (!pid) { | |
1081 | ret = __test__rdpmc(); | |
1082 | ||
1083 | exit(ret); | |
1084 | } | |
1085 | ||
1086 | wret = waitpid(pid, &status, 0); | |
1087 | if (wret < 0 || status) | |
1088 | return -1; | |
1089 | ||
1090 | return 0; | |
1091 | } | |
1092 | ||
1093 | #endif | |
1094 | ||
cd82a32e JO |
1095 | static int test__perf_pmu(void) |
1096 | { | |
1097 | return perf_pmu__test(); | |
1098 | } | |
1099 | ||
49f20d72 ACM |
1100 | static int perf_evsel__roundtrip_cache_name_test(void) |
1101 | { | |
1102 | char name[128]; | |
1103 | int type, op, err = 0, ret = 0, i, idx; | |
1104 | struct perf_evsel *evsel; | |
1105 | struct perf_evlist *evlist = perf_evlist__new(NULL, NULL); | |
1106 | ||
1107 | if (evlist == NULL) | |
1108 | return -ENOMEM; | |
1109 | ||
1110 | for (type = 0; type < PERF_COUNT_HW_CACHE_MAX; type++) { | |
1111 | for (op = 0; op < PERF_COUNT_HW_CACHE_OP_MAX; op++) { | |
1112 | /* skip invalid cache type */ | |
1113 | if (!perf_evsel__is_cache_op_valid(type, op)) | |
1114 | continue; | |
1115 | ||
1116 | for (i = 0; i < PERF_COUNT_HW_CACHE_RESULT_MAX; i++) { | |
1117 | __perf_evsel__hw_cache_type_op_res_name(type, op, i, | |
1118 | name, sizeof(name)); | |
1119 | err = parse_events(evlist, name, 0); | |
1120 | if (err) | |
1121 | ret = err; | |
1122 | } | |
1123 | } | |
1124 | } | |
1125 | ||
1126 | idx = 0; | |
1127 | evsel = perf_evlist__first(evlist); | |
1128 | ||
1129 | for (type = 0; type < PERF_COUNT_HW_CACHE_MAX; type++) { | |
1130 | for (op = 0; op < PERF_COUNT_HW_CACHE_OP_MAX; op++) { | |
1131 | /* skip invalid cache type */ | |
1132 | if (!perf_evsel__is_cache_op_valid(type, op)) | |
1133 | continue; | |
1134 | ||
1135 | for (i = 0; i < PERF_COUNT_HW_CACHE_RESULT_MAX; i++) { | |
1136 | __perf_evsel__hw_cache_type_op_res_name(type, op, i, | |
1137 | name, sizeof(name)); | |
1138 | if (evsel->idx != idx) | |
1139 | continue; | |
1140 | ||
1141 | ++idx; | |
1142 | ||
1143 | if (strcmp(perf_evsel__name(evsel), name)) { | |
1144 | pr_debug("%s != %s\n", perf_evsel__name(evsel), name); | |
1145 | ret = -1; | |
1146 | } | |
1147 | ||
1148 | evsel = perf_evsel__next(evsel); | |
1149 | } | |
1150 | } | |
1151 | } | |
1152 | ||
1153 | perf_evlist__delete(evlist); | |
1154 | return ret; | |
1155 | } | |
1156 | ||
8ad7013b ACM |
1157 | static int __perf_evsel__name_array_test(const char *names[], int nr_names) |
1158 | { | |
1159 | int i, err; | |
1160 | struct perf_evsel *evsel; | |
1161 | struct perf_evlist *evlist = perf_evlist__new(NULL, NULL); | |
1162 | ||
1163 | if (evlist == NULL) | |
1164 | return -ENOMEM; | |
1165 | ||
1166 | for (i = 0; i < nr_names; ++i) { | |
1167 | err = parse_events(evlist, names[i], 0); | |
1168 | if (err) { | |
1169 | pr_debug("failed to parse event '%s', err %d\n", | |
1170 | names[i], err); | |
1171 | goto out_delete_evlist; | |
1172 | } | |
1173 | } | |
1174 | ||
1175 | err = 0; | |
1176 | list_for_each_entry(evsel, &evlist->entries, node) { | |
1177 | if (strcmp(perf_evsel__name(evsel), names[evsel->idx])) { | |
1178 | --err; | |
1179 | pr_debug("%s != %s\n", perf_evsel__name(evsel), names[evsel->idx]); | |
1180 | } | |
1181 | } | |
1182 | ||
1183 | out_delete_evlist: | |
1184 | perf_evlist__delete(evlist); | |
1185 | return err; | |
1186 | } | |
1187 | ||
1188 | #define perf_evsel__name_array_test(names) \ | |
1189 | __perf_evsel__name_array_test(names, ARRAY_SIZE(names)) | |
1190 | ||
1191 | static int perf_evsel__roundtrip_name_test(void) | |
1192 | { | |
1193 | int err = 0, ret = 0; | |
1194 | ||
1195 | err = perf_evsel__name_array_test(perf_evsel__hw_names); | |
1196 | if (err) | |
1197 | ret = err; | |
1198 | ||
1199 | err = perf_evsel__name_array_test(perf_evsel__sw_names); | |
1200 | if (err) | |
1201 | ret = err; | |
1202 | ||
49f20d72 ACM |
1203 | err = perf_evsel__roundtrip_cache_name_test(); |
1204 | if (err) | |
1205 | ret = err; | |
1206 | ||
8ad7013b ACM |
1207 | return ret; |
1208 | } | |
1209 | ||
1c6a800c ACM |
1210 | static struct test { |
1211 | const char *desc; | |
1212 | int (*func)(void); | |
1213 | } tests[] = { | |
1214 | { | |
1215 | .desc = "vmlinux symtab matches kallsyms", | |
1216 | .func = test__vmlinux_matches_kallsyms, | |
1217 | }, | |
d854861c ACM |
1218 | { |
1219 | .desc = "detect open syscall event", | |
1220 | .func = test__open_syscall_event, | |
1221 | }, | |
0252208e ACM |
1222 | { |
1223 | .desc = "detect open syscall event on all cpus", | |
1224 | .func = test__open_syscall_event_on_all_cpus, | |
1225 | }, | |
de5fa3a8 ACM |
1226 | { |
1227 | .desc = "read samples using the mmap interface", | |
1228 | .func = test__basic_mmap, | |
1229 | }, | |
13b62567 JO |
1230 | { |
1231 | .desc = "parse events tests", | |
f50246e2 | 1232 | .func = parse_events__test, |
13b62567 | 1233 | }, |
08aa0d1f PZ |
1234 | #if defined(__x86_64__) || defined(__i386__) |
1235 | { | |
1236 | .desc = "x86 rdpmc test", | |
1237 | .func = test__rdpmc, | |
1238 | }, | |
1239 | #endif | |
3e7c439a ACM |
1240 | { |
1241 | .desc = "Validate PERF_RECORD_* events & perf_sample fields", | |
1242 | .func = test__PERF_RECORD, | |
1243 | }, | |
cd82a32e JO |
1244 | { |
1245 | .desc = "Test perf pmu format parsing", | |
1246 | .func = test__perf_pmu, | |
1247 | }, | |
f7add556 JO |
1248 | { |
1249 | .desc = "Test dso data interface", | |
1250 | .func = dso__test_data, | |
1251 | }, | |
8ad7013b ACM |
1252 | { |
1253 | .desc = "roundtrip evsel->name check", | |
1254 | .func = perf_evsel__roundtrip_name_test, | |
1255 | }, | |
1c6a800c ACM |
1256 | { |
1257 | .func = NULL, | |
1258 | }, | |
1259 | }; | |
1260 | ||
e60770a0 | 1261 | static bool perf_test__matches(int curr, int argc, const char *argv[]) |
1c6a800c | 1262 | { |
e60770a0 ACM |
1263 | int i; |
1264 | ||
1265 | if (argc == 0) | |
1266 | return true; | |
1267 | ||
1268 | for (i = 0; i < argc; ++i) { | |
1269 | char *end; | |
1270 | long nr = strtoul(argv[i], &end, 10); | |
1271 | ||
1272 | if (*end == '\0') { | |
1273 | if (nr == curr + 1) | |
1274 | return true; | |
1275 | continue; | |
1276 | } | |
1c6a800c | 1277 | |
e60770a0 ACM |
1278 | if (strstr(tests[curr].desc, argv[i])) |
1279 | return true; | |
1280 | } | |
1281 | ||
1282 | return false; | |
1283 | } | |
1284 | ||
1285 | static int __cmd_test(int argc, const char *argv[]) | |
1286 | { | |
1287 | int i = 0; | |
1c6a800c ACM |
1288 | |
1289 | while (tests[i].func) { | |
e60770a0 ACM |
1290 | int curr = i++, err; |
1291 | ||
1292 | if (!perf_test__matches(curr, argc, argv)) | |
1293 | continue; | |
1294 | ||
1295 | pr_info("%2d: %s:", i, tests[curr].desc); | |
1c6a800c | 1296 | pr_debug("\n--- start ---\n"); |
e60770a0 ACM |
1297 | err = tests[curr].func(); |
1298 | pr_debug("---- end ----\n%s:", tests[curr].desc); | |
1c6a800c | 1299 | pr_info(" %s\n", err ? "FAILED!\n" : "Ok"); |
1c6a800c ACM |
1300 | } |
1301 | ||
1302 | return 0; | |
1303 | } | |
1304 | ||
e60770a0 ACM |
1305 | static int perf_test__list(int argc, const char **argv) |
1306 | { | |
1307 | int i = 0; | |
1308 | ||
1309 | while (tests[i].func) { | |
1310 | int curr = i++; | |
1311 | ||
1312 | if (argc > 1 && !strstr(tests[curr].desc, argv[1])) | |
1313 | continue; | |
1314 | ||
1315 | pr_info("%2d: %s\n", i, tests[curr].desc); | |
1316 | } | |
1317 | ||
1318 | return 0; | |
1319 | } | |
1c6a800c | 1320 | |
1d037ca1 | 1321 | int cmd_test(int argc, const char **argv, const char *prefix __maybe_unused) |
e60770a0 ACM |
1322 | { |
1323 | const char * const test_usage[] = { | |
1324 | "perf test [<options>] [{list <test-name-fragment>|[<test-name-fragments>|<test-numbers>]}]", | |
1325 | NULL, | |
1326 | }; | |
1327 | const struct option test_options[] = { | |
c30ab8aa | 1328 | OPT_INCR('v', "verbose", &verbose, |
1c6a800c ACM |
1329 | "be more verbose (show symbol address, etc)"), |
1330 | OPT_END() | |
e60770a0 | 1331 | }; |
1c6a800c | 1332 | |
1c6a800c | 1333 | argc = parse_options(argc, argv, test_options, test_usage, 0); |
e60770a0 ACM |
1334 | if (argc >= 1 && !strcmp(argv[0], "list")) |
1335 | return perf_test__list(argc, argv); | |
1c6a800c ACM |
1336 | |
1337 | symbol_conf.priv_size = sizeof(int); | |
1338 | symbol_conf.sort_by_name = true; | |
1339 | symbol_conf.try_vmlinux_path = true; | |
1340 | ||
1341 | if (symbol__init() < 0) | |
1342 | return -1; | |
1343 | ||
e60770a0 | 1344 | return __cmd_test(argc, argv); |
1c6a800c | 1345 | } |