Commit | Line | Data |
---|---|---|
234fbbf5 ACM |
1 | #include <linux/types.h> |
2 | #include "event.h" | |
3 | #include "debug.h" | |
ec913369 | 4 | #include "session.h" |
c410a338 | 5 | #include "sort.h" |
234fbbf5 | 6 | #include "string.h" |
c410a338 | 7 | #include "strlist.h" |
62daacb5 | 8 | #include "thread.h" |
7c940c18 | 9 | #include "thread_map.h" |
234fbbf5 | 10 | |
8115d60c | 11 | static const char *perf_event__names[] = { |
3cb6d154 FW |
12 | [0] = "TOTAL", |
13 | [PERF_RECORD_MMAP] = "MMAP", | |
14 | [PERF_RECORD_LOST] = "LOST", | |
15 | [PERF_RECORD_COMM] = "COMM", | |
16 | [PERF_RECORD_EXIT] = "EXIT", | |
17 | [PERF_RECORD_THROTTLE] = "THROTTLE", | |
18 | [PERF_RECORD_UNTHROTTLE] = "UNTHROTTLE", | |
19 | [PERF_RECORD_FORK] = "FORK", | |
20 | [PERF_RECORD_READ] = "READ", | |
21 | [PERF_RECORD_SAMPLE] = "SAMPLE", | |
22 | [PERF_RECORD_HEADER_ATTR] = "ATTR", | |
23 | [PERF_RECORD_HEADER_EVENT_TYPE] = "EVENT_TYPE", | |
24 | [PERF_RECORD_HEADER_TRACING_DATA] = "TRACING_DATA", | |
25 | [PERF_RECORD_HEADER_BUILD_ID] = "BUILD_ID", | |
26 | [PERF_RECORD_FINISHED_ROUND] = "FINISHED_ROUND", | |
c8446b9b ACM |
27 | }; |
28 | ||
8115d60c | 29 | const char *perf_event__name(unsigned int id) |
3835bc00 | 30 | { |
8115d60c | 31 | if (id >= ARRAY_SIZE(perf_event__names)) |
3835bc00 | 32 | return "INVALID"; |
8115d60c | 33 | if (!perf_event__names[id]) |
3835bc00 | 34 | return "UNKNOWN"; |
8115d60c | 35 | return perf_event__names[id]; |
3835bc00 TG |
36 | } |
37 | ||
8d50e5b4 | 38 | static struct perf_sample synth_sample = { |
640c03ce ACM |
39 | .pid = -1, |
40 | .tid = -1, | |
41 | .time = -1, | |
42 | .stream_id = -1, | |
43 | .cpu = -1, | |
44 | .period = 1, | |
45 | }; | |
46 | ||
8115d60c ACM |
47 | static pid_t perf_event__synthesize_comm(union perf_event *event, pid_t pid, |
48 | int full, perf_event__handler_t process, | |
49 | struct perf_session *session) | |
234fbbf5 | 50 | { |
234fbbf5 ACM |
51 | char filename[PATH_MAX]; |
52 | char bf[BUFSIZ]; | |
53 | FILE *fp; | |
54 | size_t size = 0; | |
55 | DIR *tasks; | |
56 | struct dirent dirent, *next; | |
57 | pid_t tgid = 0; | |
58 | ||
59 | snprintf(filename, sizeof(filename), "/proc/%d/status", pid); | |
60 | ||
61 | fp = fopen(filename, "r"); | |
62 | if (fp == NULL) { | |
63 | out_race: | |
64 | /* | |
65 | * We raced with a task exiting - just return: | |
66 | */ | |
67 | pr_debug("couldn't open %s\n", filename); | |
68 | return 0; | |
69 | } | |
70 | ||
9c90a61c ACM |
71 | memset(&event->comm, 0, sizeof(event->comm)); |
72 | ||
73 | while (!event->comm.comm[0] || !event->comm.pid) { | |
74 | if (fgets(bf, sizeof(bf), fp) == NULL) { | |
75 | pr_warning("couldn't get COMM and pgid, malformed %s\n", filename); | |
76 | goto out; | |
77 | } | |
234fbbf5 ACM |
78 | |
79 | if (memcmp(bf, "Name:", 5) == 0) { | |
80 | char *name = bf + 5; | |
81 | while (*name && isspace(*name)) | |
82 | ++name; | |
83 | size = strlen(name) - 1; | |
9c90a61c | 84 | memcpy(event->comm.comm, name, size++); |
234fbbf5 ACM |
85 | } else if (memcmp(bf, "Tgid:", 5) == 0) { |
86 | char *tgids = bf + 5; | |
87 | while (*tgids && isspace(*tgids)) | |
88 | ++tgids; | |
9c90a61c | 89 | tgid = event->comm.pid = atoi(tgids); |
234fbbf5 ACM |
90 | } |
91 | } | |
92 | ||
9c90a61c | 93 | event->comm.header.type = PERF_RECORD_COMM; |
234fbbf5 | 94 | size = ALIGN(size, sizeof(u64)); |
9c90a61c ACM |
95 | memset(event->comm.comm + size, 0, session->id_hdr_size); |
96 | event->comm.header.size = (sizeof(event->comm) - | |
97 | (sizeof(event->comm.comm) - size) + | |
98 | session->id_hdr_size); | |
234fbbf5 | 99 | if (!full) { |
9c90a61c | 100 | event->comm.tid = pid; |
234fbbf5 | 101 | |
9c90a61c ACM |
102 | process(event, &synth_sample, session); |
103 | goto out; | |
234fbbf5 ACM |
104 | } |
105 | ||
106 | snprintf(filename, sizeof(filename), "/proc/%d/task", pid); | |
107 | ||
108 | tasks = opendir(filename); | |
109 | if (tasks == NULL) | |
110 | goto out_race; | |
111 | ||
112 | while (!readdir_r(tasks, &dirent, &next) && next) { | |
113 | char *end; | |
114 | pid = strtol(dirent.d_name, &end, 10); | |
115 | if (*end) | |
116 | continue; | |
117 | ||
9c90a61c | 118 | event->comm.tid = pid; |
234fbbf5 | 119 | |
9c90a61c | 120 | process(event, &synth_sample, session); |
234fbbf5 | 121 | } |
234fbbf5 | 122 | |
9c90a61c ACM |
123 | closedir(tasks); |
124 | out: | |
234fbbf5 | 125 | fclose(fp); |
234fbbf5 | 126 | |
9c90a61c | 127 | return tgid; |
234fbbf5 ACM |
128 | } |
129 | ||
8115d60c ACM |
130 | static int perf_event__synthesize_mmap_events(union perf_event *event, |
131 | pid_t pid, pid_t tgid, | |
132 | perf_event__handler_t process, | |
133 | struct perf_session *session) | |
234fbbf5 ACM |
134 | { |
135 | char filename[PATH_MAX]; | |
136 | FILE *fp; | |
137 | ||
138 | snprintf(filename, sizeof(filename), "/proc/%d/maps", pid); | |
139 | ||
140 | fp = fopen(filename, "r"); | |
141 | if (fp == NULL) { | |
142 | /* | |
143 | * We raced with a task exiting - just return: | |
144 | */ | |
145 | pr_debug("couldn't open %s\n", filename); | |
146 | return -1; | |
147 | } | |
148 | ||
9c90a61c ACM |
149 | event->header.type = PERF_RECORD_MMAP; |
150 | /* | |
151 | * Just like the kernel, see __perf_event_mmap in kernel/perf_event.c | |
152 | */ | |
153 | event->header.misc = PERF_RECORD_MISC_USER; | |
154 | ||
234fbbf5 ACM |
155 | while (1) { |
156 | char bf[BUFSIZ], *pbf = bf; | |
234fbbf5 ACM |
157 | int n; |
158 | size_t size; | |
159 | if (fgets(bf, sizeof(bf), fp) == NULL) | |
160 | break; | |
161 | ||
162 | /* 00400000-0040c000 r-xp 00000000 fd:01 41038 /bin/cat */ | |
9c90a61c | 163 | n = hex2u64(pbf, &event->mmap.start); |
234fbbf5 ACM |
164 | if (n < 0) |
165 | continue; | |
166 | pbf += n + 1; | |
9c90a61c | 167 | n = hex2u64(pbf, &event->mmap.len); |
234fbbf5 ACM |
168 | if (n < 0) |
169 | continue; | |
170 | pbf += n + 3; | |
171 | if (*pbf == 'x') { /* vm_exec */ | |
6a0e55d8 | 172 | char anonstr[] = "//anon\n"; |
234fbbf5 ACM |
173 | char *execname = strchr(bf, '/'); |
174 | ||
175 | /* Catch VDSO */ | |
176 | if (execname == NULL) | |
177 | execname = strstr(bf, "[vdso]"); | |
178 | ||
6a0e55d8 AB |
179 | /* Catch anonymous mmaps */ |
180 | if ((execname == NULL) && !strstr(bf, "[")) | |
181 | execname = anonstr; | |
182 | ||
234fbbf5 ACM |
183 | if (execname == NULL) |
184 | continue; | |
185 | ||
4af8b35d | 186 | pbf += 3; |
9c90a61c | 187 | n = hex2u64(pbf, &event->mmap.pgoff); |
4af8b35d | 188 | |
234fbbf5 ACM |
189 | size = strlen(execname); |
190 | execname[size - 1] = '\0'; /* Remove \n */ | |
9c90a61c | 191 | memcpy(event->mmap.filename, execname, size); |
234fbbf5 | 192 | size = ALIGN(size, sizeof(u64)); |
9c90a61c ACM |
193 | event->mmap.len -= event->mmap.start; |
194 | event->mmap.header.size = (sizeof(event->mmap) - | |
195 | (sizeof(event->mmap.filename) - size)); | |
196 | memset(event->mmap.filename + size, 0, session->id_hdr_size); | |
197 | event->mmap.header.size += session->id_hdr_size; | |
198 | event->mmap.pid = tgid; | |
199 | event->mmap.tid = pid; | |
200 | ||
201 | process(event, &synth_sample, session); | |
234fbbf5 ACM |
202 | } |
203 | } | |
204 | ||
205 | fclose(fp); | |
206 | return 0; | |
207 | } | |
208 | ||
8115d60c ACM |
209 | int perf_event__synthesize_modules(perf_event__handler_t process, |
210 | struct perf_session *session, | |
211 | struct machine *machine) | |
b7cece76 ACM |
212 | { |
213 | struct rb_node *nd; | |
23346f21 | 214 | struct map_groups *kmaps = &machine->kmaps; |
8115d60c ACM |
215 | union perf_event *event = zalloc((sizeof(event->mmap) + |
216 | session->id_hdr_size)); | |
9c90a61c ACM |
217 | if (event == NULL) { |
218 | pr_debug("Not enough memory synthesizing mmap event " | |
219 | "for kernel modules\n"); | |
220 | return -1; | |
221 | } | |
222 | ||
223 | event->header.type = PERF_RECORD_MMAP; | |
b7cece76 | 224 | |
a1645ce1 ZY |
225 | /* |
226 | * kernel uses 0 for user space maps, see kernel/perf_event.c | |
227 | * __perf_event_mmap | |
228 | */ | |
23346f21 | 229 | if (machine__is_host(machine)) |
9c90a61c | 230 | event->header.misc = PERF_RECORD_MISC_KERNEL; |
a1645ce1 | 231 | else |
9c90a61c | 232 | event->header.misc = PERF_RECORD_MISC_GUEST_KERNEL; |
a1645ce1 ZY |
233 | |
234 | for (nd = rb_first(&kmaps->maps[MAP__FUNCTION]); | |
b7cece76 | 235 | nd; nd = rb_next(nd)) { |
b7cece76 ACM |
236 | size_t size; |
237 | struct map *pos = rb_entry(nd, struct map, rb_node); | |
238 | ||
239 | if (pos->dso->kernel) | |
240 | continue; | |
241 | ||
242 | size = ALIGN(pos->dso->long_name_len + 1, sizeof(u64)); | |
9c90a61c ACM |
243 | event->mmap.header.type = PERF_RECORD_MMAP; |
244 | event->mmap.header.size = (sizeof(event->mmap) - | |
245 | (sizeof(event->mmap.filename) - size)); | |
246 | memset(event->mmap.filename + size, 0, session->id_hdr_size); | |
247 | event->mmap.header.size += session->id_hdr_size; | |
248 | event->mmap.start = pos->start; | |
249 | event->mmap.len = pos->end - pos->start; | |
250 | event->mmap.pid = machine->pid; | |
251 | ||
252 | memcpy(event->mmap.filename, pos->dso->long_name, | |
b7cece76 | 253 | pos->dso->long_name_len + 1); |
9c90a61c | 254 | process(event, &synth_sample, session); |
b7cece76 ACM |
255 | } |
256 | ||
9c90a61c | 257 | free(event); |
b7cece76 ACM |
258 | return 0; |
259 | } | |
260 | ||
8115d60c ACM |
261 | static int __event__synthesize_thread(union perf_event *comm_event, |
262 | union perf_event *mmap_event, | |
263 | pid_t pid, perf_event__handler_t process, | |
9c90a61c | 264 | struct perf_session *session) |
234fbbf5 | 265 | { |
8115d60c | 266 | pid_t tgid = perf_event__synthesize_comm(comm_event, pid, 1, process, |
9c90a61c | 267 | session); |
234fbbf5 ACM |
268 | if (tgid == -1) |
269 | return -1; | |
8115d60c | 270 | return perf_event__synthesize_mmap_events(mmap_event, pid, tgid, |
9c90a61c | 271 | process, session); |
234fbbf5 ACM |
272 | } |
273 | ||
7c940c18 ACM |
274 | int perf_event__synthesize_thread_map(struct thread_map *threads, |
275 | perf_event__handler_t process, | |
276 | struct perf_session *session) | |
9c90a61c | 277 | { |
8115d60c | 278 | union perf_event *comm_event, *mmap_event; |
401b8e13 | 279 | int err = -1, thread; |
9c90a61c ACM |
280 | |
281 | comm_event = malloc(sizeof(comm_event->comm) + session->id_hdr_size); | |
282 | if (comm_event == NULL) | |
283 | goto out; | |
284 | ||
285 | mmap_event = malloc(sizeof(mmap_event->mmap) + session->id_hdr_size); | |
286 | if (mmap_event == NULL) | |
287 | goto out_free_comm; | |
288 | ||
401b8e13 ACM |
289 | err = 0; |
290 | for (thread = 0; thread < threads->nr; ++thread) { | |
291 | if (__event__synthesize_thread(comm_event, mmap_event, | |
292 | threads->map[thread], | |
293 | process, session)) { | |
294 | err = -1; | |
295 | break; | |
296 | } | |
297 | } | |
9c90a61c ACM |
298 | free(mmap_event); |
299 | out_free_comm: | |
300 | free(comm_event); | |
301 | out: | |
302 | return err; | |
303 | } | |
304 | ||
8115d60c ACM |
305 | int perf_event__synthesize_threads(perf_event__handler_t process, |
306 | struct perf_session *session) | |
234fbbf5 ACM |
307 | { |
308 | DIR *proc; | |
309 | struct dirent dirent, *next; | |
8115d60c | 310 | union perf_event *comm_event, *mmap_event; |
9c90a61c ACM |
311 | int err = -1; |
312 | ||
313 | comm_event = malloc(sizeof(comm_event->comm) + session->id_hdr_size); | |
314 | if (comm_event == NULL) | |
315 | goto out; | |
316 | ||
317 | mmap_event = malloc(sizeof(mmap_event->mmap) + session->id_hdr_size); | |
318 | if (mmap_event == NULL) | |
319 | goto out_free_comm; | |
234fbbf5 ACM |
320 | |
321 | proc = opendir("/proc"); | |
9c90a61c ACM |
322 | if (proc == NULL) |
323 | goto out_free_mmap; | |
234fbbf5 ACM |
324 | |
325 | while (!readdir_r(proc, &dirent, &next) && next) { | |
326 | char *end; | |
327 | pid_t pid = strtol(dirent.d_name, &end, 10); | |
328 | ||
329 | if (*end) /* only interested in proper numerical dirents */ | |
330 | continue; | |
331 | ||
9c90a61c ACM |
332 | __event__synthesize_thread(comm_event, mmap_event, pid, |
333 | process, session); | |
234fbbf5 ACM |
334 | } |
335 | ||
336 | closedir(proc); | |
9c90a61c ACM |
337 | err = 0; |
338 | out_free_mmap: | |
339 | free(mmap_event); | |
340 | out_free_comm: | |
341 | free(comm_event); | |
342 | out: | |
343 | return err; | |
234fbbf5 | 344 | } |
62daacb5 | 345 | |
56b03f3c ACM |
346 | struct process_symbol_args { |
347 | const char *name; | |
348 | u64 start; | |
349 | }; | |
350 | ||
3b01a413 ACM |
351 | static int find_symbol_cb(void *arg, const char *name, char type, |
352 | u64 start, u64 end __used) | |
56b03f3c ACM |
353 | { |
354 | struct process_symbol_args *args = arg; | |
355 | ||
881516eb ACM |
356 | /* |
357 | * Must be a function or at least an alias, as in PARISC64, where "_text" is | |
358 | * an 'A' to the same address as "_stext". | |
359 | */ | |
360 | if (!(symbol_type__is_a(type, MAP__FUNCTION) || | |
361 | type == 'A') || strcmp(name, args->name)) | |
56b03f3c ACM |
362 | return 0; |
363 | ||
364 | args->start = start; | |
365 | return 1; | |
366 | } | |
367 | ||
8115d60c ACM |
368 | int perf_event__synthesize_kernel_mmap(perf_event__handler_t process, |
369 | struct perf_session *session, | |
370 | struct machine *machine, | |
371 | const char *symbol_name) | |
56b03f3c ACM |
372 | { |
373 | size_t size; | |
a1645ce1 ZY |
374 | const char *filename, *mmap_name; |
375 | char path[PATH_MAX]; | |
376 | char name_buff[PATH_MAX]; | |
377 | struct map *map; | |
9c90a61c | 378 | int err; |
56b03f3c ACM |
379 | /* |
380 | * We should get this from /sys/kernel/sections/.text, but till that is | |
381 | * available use this, and after it is use this as a fallback for older | |
382 | * kernels. | |
383 | */ | |
384 | struct process_symbol_args args = { .name = symbol_name, }; | |
8115d60c ACM |
385 | union perf_event *event = zalloc((sizeof(event->mmap) + |
386 | session->id_hdr_size)); | |
9c90a61c ACM |
387 | if (event == NULL) { |
388 | pr_debug("Not enough memory synthesizing mmap event " | |
389 | "for kernel modules\n"); | |
390 | return -1; | |
391 | } | |
56b03f3c | 392 | |
48ea8f54 | 393 | mmap_name = machine__mmap_name(machine, name_buff, sizeof(name_buff)); |
23346f21 | 394 | if (machine__is_host(machine)) { |
a1645ce1 ZY |
395 | /* |
396 | * kernel uses PERF_RECORD_MISC_USER for user space maps, | |
397 | * see kernel/perf_event.c __perf_event_mmap | |
398 | */ | |
9c90a61c | 399 | event->header.misc = PERF_RECORD_MISC_KERNEL; |
a1645ce1 ZY |
400 | filename = "/proc/kallsyms"; |
401 | } else { | |
9c90a61c | 402 | event->header.misc = PERF_RECORD_MISC_GUEST_KERNEL; |
23346f21 | 403 | if (machine__is_default_guest(machine)) |
a1645ce1 ZY |
404 | filename = (char *) symbol_conf.default_guest_kallsyms; |
405 | else { | |
23346f21 | 406 | sprintf(path, "%s/proc/kallsyms", machine->root_dir); |
a1645ce1 ZY |
407 | filename = path; |
408 | } | |
409 | } | |
410 | ||
411 | if (kallsyms__parse(filename, &args, find_symbol_cb) <= 0) | |
56b03f3c ACM |
412 | return -ENOENT; |
413 | ||
23346f21 | 414 | map = machine->vmlinux_maps[MAP__FUNCTION]; |
9c90a61c | 415 | size = snprintf(event->mmap.filename, sizeof(event->mmap.filename), |
a1645ce1 | 416 | "%s%s", mmap_name, symbol_name) + 1; |
56b03f3c | 417 | size = ALIGN(size, sizeof(u64)); |
9c90a61c ACM |
418 | event->mmap.header.type = PERF_RECORD_MMAP; |
419 | event->mmap.header.size = (sizeof(event->mmap) - | |
420 | (sizeof(event->mmap.filename) - size) + session->id_hdr_size); | |
421 | event->mmap.pgoff = args.start; | |
422 | event->mmap.start = map->start; | |
423 | event->mmap.len = map->end - event->mmap.start; | |
424 | event->mmap.pid = machine->pid; | |
425 | ||
426 | err = process(event, &synth_sample, session); | |
427 | free(event); | |
428 | ||
429 | return err; | |
56b03f3c ACM |
430 | } |
431 | ||
8115d60c ACM |
432 | int perf_event__process_comm(union perf_event *event, |
433 | struct perf_sample *sample __used, | |
434 | struct perf_session *session) | |
62daacb5 | 435 | { |
8115d60c | 436 | struct thread *thread = perf_session__findnew(session, event->comm.tid); |
62daacb5 | 437 | |
8115d60c | 438 | dump_printf(": %s:%d\n", event->comm.comm, event->comm.tid); |
62daacb5 | 439 | |
d7603d51 | 440 | if (thread == NULL || thread__set_comm(thread, event->comm.comm)) { |
62daacb5 ACM |
441 | dump_printf("problem processing PERF_RECORD_COMM, skipping event.\n"); |
442 | return -1; | |
443 | } | |
444 | ||
445 | return 0; | |
446 | } | |
447 | ||
8115d60c ACM |
448 | int perf_event__process_lost(union perf_event *event, |
449 | struct perf_sample *sample __used, | |
450 | struct perf_session *session) | |
62daacb5 | 451 | { |
9486aa38 | 452 | dump_printf(": id:%" PRIu64 ": lost:%" PRIu64 "\n", |
8115d60c ACM |
453 | event->lost.id, event->lost.lost); |
454 | session->hists.stats.total_lost += event->lost.lost; | |
62daacb5 ACM |
455 | return 0; |
456 | } | |
457 | ||
8115d60c ACM |
458 | static void perf_event__set_kernel_mmap_len(union perf_event *event, |
459 | struct map **maps) | |
a1645ce1 | 460 | { |
8115d60c ACM |
461 | maps[MAP__FUNCTION]->start = event->mmap.start; |
462 | maps[MAP__FUNCTION]->end = event->mmap.start + event->mmap.len; | |
a1645ce1 ZY |
463 | /* |
464 | * Be a bit paranoid here, some perf.data file came with | |
465 | * a zero sized synthesized MMAP event for the kernel. | |
466 | */ | |
467 | if (maps[MAP__FUNCTION]->end == 0) | |
9d1faba5 | 468 | maps[MAP__FUNCTION]->end = ~0ULL; |
a1645ce1 ZY |
469 | } |
470 | ||
8115d60c ACM |
471 | static int perf_event__process_kernel_mmap(union perf_event *event, |
472 | struct perf_session *session) | |
62daacb5 | 473 | { |
56b03f3c | 474 | struct map *map; |
a1645ce1 | 475 | char kmmap_prefix[PATH_MAX]; |
23346f21 | 476 | struct machine *machine; |
a1645ce1 ZY |
477 | enum dso_kernel_type kernel_type; |
478 | bool is_kernel_mmap; | |
479 | ||
8115d60c | 480 | machine = perf_session__findnew_machine(session, event->mmap.pid); |
23346f21 | 481 | if (!machine) { |
8115d60c | 482 | pr_err("Can't find id %d's machine\n", event->mmap.pid); |
a1645ce1 ZY |
483 | goto out_problem; |
484 | } | |
62daacb5 | 485 | |
48ea8f54 | 486 | machine__mmap_name(machine, kmmap_prefix, sizeof(kmmap_prefix)); |
23346f21 | 487 | if (machine__is_host(machine)) |
a1645ce1 ZY |
488 | kernel_type = DSO_TYPE_KERNEL; |
489 | else | |
490 | kernel_type = DSO_TYPE_GUEST_KERNEL; | |
62daacb5 | 491 | |
8115d60c | 492 | is_kernel_mmap = memcmp(event->mmap.filename, |
a1645ce1 ZY |
493 | kmmap_prefix, |
494 | strlen(kmmap_prefix)) == 0; | |
8115d60c ACM |
495 | if (event->mmap.filename[0] == '/' || |
496 | (!is_kernel_mmap && event->mmap.filename[0] == '[')) { | |
b7cece76 | 497 | |
a1645ce1 ZY |
498 | char short_module_name[1024]; |
499 | char *name, *dot; | |
b7cece76 | 500 | |
8115d60c ACM |
501 | if (event->mmap.filename[0] == '/') { |
502 | name = strrchr(event->mmap.filename, '/'); | |
b7cece76 ACM |
503 | if (name == NULL) |
504 | goto out_problem; | |
505 | ||
506 | ++name; /* skip / */ | |
507 | dot = strrchr(name, '.'); | |
508 | if (dot == NULL) | |
509 | goto out_problem; | |
b7cece76 | 510 | snprintf(short_module_name, sizeof(short_module_name), |
a1645ce1 | 511 | "[%.*s]", (int)(dot - name), name); |
b7cece76 | 512 | strxfrchar(short_module_name, '-', '_'); |
a1645ce1 | 513 | } else |
8115d60c | 514 | strcpy(short_module_name, event->mmap.filename); |
a1645ce1 | 515 | |
8115d60c ACM |
516 | map = machine__new_module(machine, event->mmap.start, |
517 | event->mmap.filename); | |
a1645ce1 ZY |
518 | if (map == NULL) |
519 | goto out_problem; | |
520 | ||
521 | name = strdup(short_module_name); | |
522 | if (name == NULL) | |
523 | goto out_problem; | |
524 | ||
525 | map->dso->short_name = name; | |
6e406257 | 526 | map->dso->sname_alloc = 1; |
8115d60c | 527 | map->end = map->start + event->mmap.len; |
a1645ce1 | 528 | } else if (is_kernel_mmap) { |
8115d60c | 529 | const char *symbol_name = (event->mmap.filename + |
a1645ce1 ZY |
530 | strlen(kmmap_prefix)); |
531 | /* | |
532 | * Should be there already, from the build-id table in | |
533 | * the header. | |
534 | */ | |
23346f21 ACM |
535 | struct dso *kernel = __dsos__findnew(&machine->kernel_dsos, |
536 | kmmap_prefix); | |
a1645ce1 ZY |
537 | if (kernel == NULL) |
538 | goto out_problem; | |
539 | ||
540 | kernel->kernel = kernel_type; | |
d28c6223 | 541 | if (__machine__create_kernel_maps(machine, kernel) < 0) |
a1645ce1 ZY |
542 | goto out_problem; |
543 | ||
8115d60c | 544 | perf_event__set_kernel_mmap_len(event, machine->vmlinux_maps); |
ec80fde7 ACM |
545 | |
546 | /* | |
547 | * Avoid using a zero address (kptr_restrict) for the ref reloc | |
548 | * symbol. Effectively having zero here means that at record | |
549 | * time /proc/sys/kernel/kptr_restrict was non zero. | |
550 | */ | |
551 | if (event->mmap.pgoff != 0) { | |
552 | perf_session__set_kallsyms_ref_reloc_sym(machine->vmlinux_maps, | |
553 | symbol_name, | |
554 | event->mmap.pgoff); | |
555 | } | |
556 | ||
23346f21 | 557 | if (machine__is_default_guest(machine)) { |
b7cece76 | 558 | /* |
a1645ce1 | 559 | * preload dso of guest kernel and modules |
b7cece76 | 560 | */ |
23346f21 ACM |
561 | dso__load(kernel, machine->vmlinux_maps[MAP__FUNCTION], |
562 | NULL); | |
a1645ce1 ZY |
563 | } |
564 | } | |
565 | return 0; | |
566 | out_problem: | |
567 | return -1; | |
568 | } | |
b7cece76 | 569 | |
8115d60c ACM |
570 | int perf_event__process_mmap(union perf_event *event, |
571 | struct perf_sample *sample __used, | |
572 | struct perf_session *session) | |
a1645ce1 | 573 | { |
23346f21 | 574 | struct machine *machine; |
a1645ce1 ZY |
575 | struct thread *thread; |
576 | struct map *map; | |
8115d60c | 577 | u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; |
a1645ce1 | 578 | int ret = 0; |
b7cece76 | 579 | |
9486aa38 | 580 | dump_printf(" %d/%d: [%#" PRIx64 "(%#" PRIx64 ") @ %#" PRIx64 "]: %s\n", |
8115d60c ACM |
581 | event->mmap.pid, event->mmap.tid, event->mmap.start, |
582 | event->mmap.len, event->mmap.pgoff, event->mmap.filename); | |
a1645ce1 ZY |
583 | |
584 | if (cpumode == PERF_RECORD_MISC_GUEST_KERNEL || | |
585 | cpumode == PERF_RECORD_MISC_KERNEL) { | |
8115d60c | 586 | ret = perf_event__process_kernel_mmap(event, session); |
a1645ce1 ZY |
587 | if (ret < 0) |
588 | goto out_problem; | |
56b03f3c ACM |
589 | return 0; |
590 | } | |
591 | ||
23346f21 | 592 | machine = perf_session__find_host_machine(session); |
4cc49458 ACM |
593 | if (machine == NULL) |
594 | goto out_problem; | |
8115d60c | 595 | thread = perf_session__findnew(session, event->mmap.pid); |
d65a458b ACM |
596 | if (thread == NULL) |
597 | goto out_problem; | |
8115d60c ACM |
598 | map = map__new(&machine->user_dsos, event->mmap.start, |
599 | event->mmap.len, event->mmap.pgoff, | |
600 | event->mmap.pid, event->mmap.filename, | |
361d1346 | 601 | MAP__FUNCTION); |
d65a458b | 602 | if (map == NULL) |
b7cece76 ACM |
603 | goto out_problem; |
604 | ||
605 | thread__insert_map(thread, map); | |
606 | return 0; | |
62daacb5 | 607 | |
b7cece76 ACM |
608 | out_problem: |
609 | dump_printf("problem processing PERF_RECORD_MMAP, skipping event.\n"); | |
62daacb5 ACM |
610 | return 0; |
611 | } | |
612 | ||
8115d60c ACM |
613 | int perf_event__process_task(union perf_event *event, |
614 | struct perf_sample *sample __used, | |
615 | struct perf_session *session) | |
62daacb5 | 616 | { |
8115d60c ACM |
617 | struct thread *thread = perf_session__findnew(session, event->fork.tid); |
618 | struct thread *parent = perf_session__findnew(session, event->fork.ptid); | |
62daacb5 | 619 | |
8115d60c ACM |
620 | dump_printf("(%d:%d):(%d:%d)\n", event->fork.pid, event->fork.tid, |
621 | event->fork.ppid, event->fork.ptid); | |
62daacb5 | 622 | |
8115d60c | 623 | if (event->header.type == PERF_RECORD_EXIT) { |
720a3aeb | 624 | perf_session__remove_thread(session, thread); |
62daacb5 | 625 | return 0; |
720a3aeb | 626 | } |
62daacb5 ACM |
627 | |
628 | if (thread == NULL || parent == NULL || | |
629 | thread__fork(thread, parent) < 0) { | |
630 | dump_printf("problem processing PERF_RECORD_FORK, skipping event.\n"); | |
631 | return -1; | |
632 | } | |
633 | ||
634 | return 0; | |
635 | } | |
1ed091c4 | 636 | |
8115d60c ACM |
637 | int perf_event__process(union perf_event *event, struct perf_sample *sample, |
638 | struct perf_session *session) | |
b83f920e SD |
639 | { |
640 | switch (event->header.type) { | |
641 | case PERF_RECORD_COMM: | |
8115d60c | 642 | perf_event__process_comm(event, sample, session); |
b83f920e SD |
643 | break; |
644 | case PERF_RECORD_MMAP: | |
8115d60c | 645 | perf_event__process_mmap(event, sample, session); |
b83f920e SD |
646 | break; |
647 | case PERF_RECORD_FORK: | |
648 | case PERF_RECORD_EXIT: | |
8115d60c | 649 | perf_event__process_task(event, sample, session); |
b83f920e | 650 | break; |
ef2bf6d0 | 651 | case PERF_RECORD_LOST: |
8115d60c | 652 | perf_event__process_lost(event, sample, session); |
b83f920e SD |
653 | default: |
654 | break; | |
655 | } | |
656 | ||
657 | return 0; | |
658 | } | |
659 | ||
59ee68ec ACM |
660 | void thread__find_addr_map(struct thread *self, |
661 | struct perf_session *session, u8 cpumode, | |
a1645ce1 | 662 | enum map_type type, pid_t pid, u64 addr, |
59ee68ec | 663 | struct addr_location *al) |
1ed091c4 | 664 | { |
9958e1f0 | 665 | struct map_groups *mg = &self->mg; |
23346f21 | 666 | struct machine *machine = NULL; |
1ed091c4 | 667 | |
9958e1f0 | 668 | al->thread = self; |
1ed091c4 | 669 | al->addr = addr; |
a1645ce1 ZY |
670 | al->cpumode = cpumode; |
671 | al->filtered = false; | |
1ed091c4 | 672 | |
a1645ce1 | 673 | if (cpumode == PERF_RECORD_MISC_KERNEL && perf_host) { |
1ed091c4 | 674 | al->level = 'k'; |
23346f21 | 675 | machine = perf_session__find_host_machine(session); |
4cc49458 ACM |
676 | if (machine == NULL) { |
677 | al->map = NULL; | |
678 | return; | |
679 | } | |
23346f21 | 680 | mg = &machine->kmaps; |
a1645ce1 | 681 | } else if (cpumode == PERF_RECORD_MISC_USER && perf_host) { |
1ed091c4 | 682 | al->level = '.'; |
23346f21 | 683 | machine = perf_session__find_host_machine(session); |
a1645ce1 ZY |
684 | } else if (cpumode == PERF_RECORD_MISC_GUEST_KERNEL && perf_guest) { |
685 | al->level = 'g'; | |
23346f21 | 686 | machine = perf_session__find_machine(session, pid); |
4cc49458 | 687 | if (machine == NULL) { |
a1645ce1 ZY |
688 | al->map = NULL; |
689 | return; | |
690 | } | |
23346f21 | 691 | mg = &machine->kmaps; |
a1645ce1 ZY |
692 | } else { |
693 | /* | |
694 | * 'u' means guest os user space. | |
695 | * TODO: We don't support guest user space. Might support late. | |
696 | */ | |
697 | if (cpumode == PERF_RECORD_MISC_GUEST_USER && perf_guest) | |
698 | al->level = 'u'; | |
699 | else | |
700 | al->level = 'H'; | |
1ed091c4 | 701 | al->map = NULL; |
a1645ce1 ZY |
702 | |
703 | if ((cpumode == PERF_RECORD_MISC_GUEST_USER || | |
704 | cpumode == PERF_RECORD_MISC_GUEST_KERNEL) && | |
705 | !perf_guest) | |
706 | al->filtered = true; | |
707 | if ((cpumode == PERF_RECORD_MISC_USER || | |
708 | cpumode == PERF_RECORD_MISC_KERNEL) && | |
709 | !perf_host) | |
710 | al->filtered = true; | |
711 | ||
1ed091c4 ACM |
712 | return; |
713 | } | |
714 | try_again: | |
9958e1f0 | 715 | al->map = map_groups__find(mg, type, al->addr); |
1ed091c4 ACM |
716 | if (al->map == NULL) { |
717 | /* | |
718 | * If this is outside of all known maps, and is a negative | |
719 | * address, try to look it up in the kernel dso, as it might be | |
720 | * a vsyscall or vdso (which executes in user-mode). | |
721 | * | |
722 | * XXX This is nasty, we should have a symbol list in the | |
723 | * "[vdso]" dso, but for now lets use the old trick of looking | |
724 | * in the whole kernel symbol list. | |
725 | */ | |
a1645ce1 | 726 | if ((long long)al->addr < 0 && |
6c6804fb | 727 | cpumode == PERF_RECORD_MISC_USER && |
23346f21 ACM |
728 | machine && mg != &machine->kmaps) { |
729 | mg = &machine->kmaps; | |
1ed091c4 ACM |
730 | goto try_again; |
731 | } | |
59ee68ec | 732 | } else |
1ed091c4 | 733 | al->addr = al->map->map_ip(al->map, al->addr); |
59ee68ec ACM |
734 | } |
735 | ||
736 | void thread__find_addr_location(struct thread *self, | |
737 | struct perf_session *session, u8 cpumode, | |
a1645ce1 | 738 | enum map_type type, pid_t pid, u64 addr, |
59ee68ec ACM |
739 | struct addr_location *al, |
740 | symbol_filter_t filter) | |
741 | { | |
a1645ce1 | 742 | thread__find_addr_map(self, session, cpumode, type, pid, addr, al); |
59ee68ec | 743 | if (al->map != NULL) |
9de89fe7 | 744 | al->sym = map__find_symbol(al->map, al->addr, filter); |
59ee68ec ACM |
745 | else |
746 | al->sym = NULL; | |
1ed091c4 ACM |
747 | } |
748 | ||
8115d60c ACM |
749 | int perf_event__preprocess_sample(const union perf_event *event, |
750 | struct perf_session *session, | |
751 | struct addr_location *al, | |
752 | struct perf_sample *sample, | |
753 | symbol_filter_t filter) | |
1ed091c4 | 754 | { |
8115d60c ACM |
755 | u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; |
756 | struct thread *thread = perf_session__findnew(session, event->ip.pid); | |
41a37e20 | 757 | |
1ed091c4 ACM |
758 | if (thread == NULL) |
759 | return -1; | |
760 | ||
c410a338 ACM |
761 | if (symbol_conf.comm_list && |
762 | !strlist__has_entry(symbol_conf.comm_list, thread->comm)) | |
763 | goto out_filtered; | |
764 | ||
1ed091c4 | 765 | dump_printf(" ... thread: %s:%d\n", thread->comm, thread->pid); |
1f626bc3 ACM |
766 | /* |
767 | * Have we already created the kernel maps for the host machine? | |
768 | * | |
769 | * This should have happened earlier, when we processed the kernel MMAP | |
770 | * events, but for older perf.data files there was no such thing, so do | |
771 | * it now. | |
772 | */ | |
773 | if (cpumode == PERF_RECORD_MISC_KERNEL && | |
774 | session->host_machine.vmlinux_maps[MAP__FUNCTION] == NULL) | |
775 | machine__create_kernel_maps(&session->host_machine); | |
1ed091c4 | 776 | |
96415e4d | 777 | thread__find_addr_map(thread, session, cpumode, MAP__FUNCTION, |
8115d60c | 778 | event->ip.pid, event->ip.ip, al); |
1ed091c4 ACM |
779 | dump_printf(" ...... dso: %s\n", |
780 | al->map ? al->map->dso->long_name : | |
781 | al->level == 'H' ? "[hypervisor]" : "<not found>"); | |
96415e4d | 782 | al->sym = NULL; |
8d50e5b4 | 783 | al->cpu = sample->cpu; |
96415e4d ACM |
784 | |
785 | if (al->map) { | |
786 | if (symbol_conf.dso_list && | |
787 | (!al->map || !al->map->dso || | |
788 | !(strlist__has_entry(symbol_conf.dso_list, | |
789 | al->map->dso->short_name) || | |
790 | (al->map->dso->short_name != al->map->dso->long_name && | |
791 | strlist__has_entry(symbol_conf.dso_list, | |
792 | al->map->dso->long_name))))) | |
793 | goto out_filtered; | |
96415e4d ACM |
794 | |
795 | al->sym = map__find_symbol(al->map, al->addr, filter); | |
796 | } | |
c410a338 ACM |
797 | |
798 | if (symbol_conf.sym_list && al->sym && | |
799 | !strlist__has_entry(symbol_conf.sym_list, al->sym->name)) | |
800 | goto out_filtered; | |
801 | ||
c410a338 ACM |
802 | return 0; |
803 | ||
804 | out_filtered: | |
805 | al->filtered = true; | |
1ed091c4 ACM |
806 | return 0; |
807 | } |