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Commit | Line | Data |
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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[] = { |
c8446b9b ACM |
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", | |
3835bc00 | 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 */ | |
172 | char *execname = strchr(bf, '/'); | |
173 | ||
174 | /* Catch VDSO */ | |
175 | if (execname == NULL) | |
176 | execname = strstr(bf, "[vdso]"); | |
177 | ||
178 | if (execname == NULL) | |
179 | continue; | |
180 | ||
4af8b35d | 181 | pbf += 3; |
9c90a61c | 182 | n = hex2u64(pbf, &event->mmap.pgoff); |
4af8b35d | 183 | |
234fbbf5 ACM |
184 | size = strlen(execname); |
185 | execname[size - 1] = '\0'; /* Remove \n */ | |
9c90a61c | 186 | memcpy(event->mmap.filename, execname, size); |
234fbbf5 | 187 | size = ALIGN(size, sizeof(u64)); |
9c90a61c ACM |
188 | event->mmap.len -= event->mmap.start; |
189 | event->mmap.header.size = (sizeof(event->mmap) - | |
190 | (sizeof(event->mmap.filename) - size)); | |
191 | memset(event->mmap.filename + size, 0, session->id_hdr_size); | |
192 | event->mmap.header.size += session->id_hdr_size; | |
193 | event->mmap.pid = tgid; | |
194 | event->mmap.tid = pid; | |
195 | ||
196 | process(event, &synth_sample, session); | |
234fbbf5 ACM |
197 | } |
198 | } | |
199 | ||
200 | fclose(fp); | |
201 | return 0; | |
202 | } | |
203 | ||
8115d60c ACM |
204 | int perf_event__synthesize_modules(perf_event__handler_t process, |
205 | struct perf_session *session, | |
206 | struct machine *machine) | |
b7cece76 ACM |
207 | { |
208 | struct rb_node *nd; | |
23346f21 | 209 | struct map_groups *kmaps = &machine->kmaps; |
8115d60c ACM |
210 | union perf_event *event = zalloc((sizeof(event->mmap) + |
211 | session->id_hdr_size)); | |
9c90a61c ACM |
212 | if (event == NULL) { |
213 | pr_debug("Not enough memory synthesizing mmap event " | |
214 | "for kernel modules\n"); | |
215 | return -1; | |
216 | } | |
217 | ||
218 | event->header.type = PERF_RECORD_MMAP; | |
b7cece76 | 219 | |
a1645ce1 ZY |
220 | /* |
221 | * kernel uses 0 for user space maps, see kernel/perf_event.c | |
222 | * __perf_event_mmap | |
223 | */ | |
23346f21 | 224 | if (machine__is_host(machine)) |
9c90a61c | 225 | event->header.misc = PERF_RECORD_MISC_KERNEL; |
a1645ce1 | 226 | else |
9c90a61c | 227 | event->header.misc = PERF_RECORD_MISC_GUEST_KERNEL; |
a1645ce1 ZY |
228 | |
229 | for (nd = rb_first(&kmaps->maps[MAP__FUNCTION]); | |
b7cece76 | 230 | nd; nd = rb_next(nd)) { |
b7cece76 ACM |
231 | size_t size; |
232 | struct map *pos = rb_entry(nd, struct map, rb_node); | |
233 | ||
234 | if (pos->dso->kernel) | |
235 | continue; | |
236 | ||
237 | size = ALIGN(pos->dso->long_name_len + 1, sizeof(u64)); | |
9c90a61c ACM |
238 | event->mmap.header.type = PERF_RECORD_MMAP; |
239 | event->mmap.header.size = (sizeof(event->mmap) - | |
240 | (sizeof(event->mmap.filename) - size)); | |
241 | memset(event->mmap.filename + size, 0, session->id_hdr_size); | |
242 | event->mmap.header.size += session->id_hdr_size; | |
243 | event->mmap.start = pos->start; | |
244 | event->mmap.len = pos->end - pos->start; | |
245 | event->mmap.pid = machine->pid; | |
246 | ||
247 | memcpy(event->mmap.filename, pos->dso->long_name, | |
b7cece76 | 248 | pos->dso->long_name_len + 1); |
9c90a61c | 249 | process(event, &synth_sample, session); |
b7cece76 ACM |
250 | } |
251 | ||
9c90a61c | 252 | free(event); |
b7cece76 ACM |
253 | return 0; |
254 | } | |
255 | ||
8115d60c ACM |
256 | static int __event__synthesize_thread(union perf_event *comm_event, |
257 | union perf_event *mmap_event, | |
258 | pid_t pid, perf_event__handler_t process, | |
9c90a61c | 259 | struct perf_session *session) |
234fbbf5 | 260 | { |
8115d60c | 261 | pid_t tgid = perf_event__synthesize_comm(comm_event, pid, 1, process, |
9c90a61c | 262 | session); |
234fbbf5 ACM |
263 | if (tgid == -1) |
264 | return -1; | |
8115d60c | 265 | return perf_event__synthesize_mmap_events(mmap_event, pid, tgid, |
9c90a61c | 266 | process, session); |
234fbbf5 ACM |
267 | } |
268 | ||
7c940c18 ACM |
269 | int perf_event__synthesize_thread_map(struct thread_map *threads, |
270 | perf_event__handler_t process, | |
271 | struct perf_session *session) | |
9c90a61c | 272 | { |
8115d60c | 273 | union perf_event *comm_event, *mmap_event; |
401b8e13 | 274 | int err = -1, thread; |
9c90a61c ACM |
275 | |
276 | comm_event = malloc(sizeof(comm_event->comm) + session->id_hdr_size); | |
277 | if (comm_event == NULL) | |
278 | goto out; | |
279 | ||
280 | mmap_event = malloc(sizeof(mmap_event->mmap) + session->id_hdr_size); | |
281 | if (mmap_event == NULL) | |
282 | goto out_free_comm; | |
283 | ||
401b8e13 ACM |
284 | err = 0; |
285 | for (thread = 0; thread < threads->nr; ++thread) { | |
286 | if (__event__synthesize_thread(comm_event, mmap_event, | |
287 | threads->map[thread], | |
288 | process, session)) { | |
289 | err = -1; | |
290 | break; | |
291 | } | |
292 | } | |
9c90a61c ACM |
293 | free(mmap_event); |
294 | out_free_comm: | |
295 | free(comm_event); | |
296 | out: | |
297 | return err; | |
298 | } | |
299 | ||
8115d60c ACM |
300 | int perf_event__synthesize_threads(perf_event__handler_t process, |
301 | struct perf_session *session) | |
234fbbf5 ACM |
302 | { |
303 | DIR *proc; | |
304 | struct dirent dirent, *next; | |
8115d60c | 305 | union perf_event *comm_event, *mmap_event; |
9c90a61c ACM |
306 | int err = -1; |
307 | ||
308 | comm_event = malloc(sizeof(comm_event->comm) + session->id_hdr_size); | |
309 | if (comm_event == NULL) | |
310 | goto out; | |
311 | ||
312 | mmap_event = malloc(sizeof(mmap_event->mmap) + session->id_hdr_size); | |
313 | if (mmap_event == NULL) | |
314 | goto out_free_comm; | |
234fbbf5 ACM |
315 | |
316 | proc = opendir("/proc"); | |
9c90a61c ACM |
317 | if (proc == NULL) |
318 | goto out_free_mmap; | |
234fbbf5 ACM |
319 | |
320 | while (!readdir_r(proc, &dirent, &next) && next) { | |
321 | char *end; | |
322 | pid_t pid = strtol(dirent.d_name, &end, 10); | |
323 | ||
324 | if (*end) /* only interested in proper numerical dirents */ | |
325 | continue; | |
326 | ||
9c90a61c ACM |
327 | __event__synthesize_thread(comm_event, mmap_event, pid, |
328 | process, session); | |
234fbbf5 ACM |
329 | } |
330 | ||
331 | closedir(proc); | |
9c90a61c ACM |
332 | err = 0; |
333 | out_free_mmap: | |
334 | free(mmap_event); | |
335 | out_free_comm: | |
336 | free(comm_event); | |
337 | out: | |
338 | return err; | |
234fbbf5 | 339 | } |
62daacb5 | 340 | |
56b03f3c ACM |
341 | struct process_symbol_args { |
342 | const char *name; | |
343 | u64 start; | |
344 | }; | |
345 | ||
3b01a413 ACM |
346 | static int find_symbol_cb(void *arg, const char *name, char type, |
347 | u64 start, u64 end __used) | |
56b03f3c ACM |
348 | { |
349 | struct process_symbol_args *args = arg; | |
350 | ||
881516eb ACM |
351 | /* |
352 | * Must be a function or at least an alias, as in PARISC64, where "_text" is | |
353 | * an 'A' to the same address as "_stext". | |
354 | */ | |
355 | if (!(symbol_type__is_a(type, MAP__FUNCTION) || | |
356 | type == 'A') || strcmp(name, args->name)) | |
56b03f3c ACM |
357 | return 0; |
358 | ||
359 | args->start = start; | |
360 | return 1; | |
361 | } | |
362 | ||
8115d60c ACM |
363 | int perf_event__synthesize_kernel_mmap(perf_event__handler_t process, |
364 | struct perf_session *session, | |
365 | struct machine *machine, | |
366 | const char *symbol_name) | |
56b03f3c ACM |
367 | { |
368 | size_t size; | |
a1645ce1 ZY |
369 | const char *filename, *mmap_name; |
370 | char path[PATH_MAX]; | |
371 | char name_buff[PATH_MAX]; | |
372 | struct map *map; | |
9c90a61c | 373 | int err; |
56b03f3c ACM |
374 | /* |
375 | * We should get this from /sys/kernel/sections/.text, but till that is | |
376 | * available use this, and after it is use this as a fallback for older | |
377 | * kernels. | |
378 | */ | |
379 | struct process_symbol_args args = { .name = symbol_name, }; | |
8115d60c ACM |
380 | union perf_event *event = zalloc((sizeof(event->mmap) + |
381 | session->id_hdr_size)); | |
9c90a61c ACM |
382 | if (event == NULL) { |
383 | pr_debug("Not enough memory synthesizing mmap event " | |
384 | "for kernel modules\n"); | |
385 | return -1; | |
386 | } | |
56b03f3c | 387 | |
48ea8f54 | 388 | mmap_name = machine__mmap_name(machine, name_buff, sizeof(name_buff)); |
23346f21 | 389 | if (machine__is_host(machine)) { |
a1645ce1 ZY |
390 | /* |
391 | * kernel uses PERF_RECORD_MISC_USER for user space maps, | |
392 | * see kernel/perf_event.c __perf_event_mmap | |
393 | */ | |
9c90a61c | 394 | event->header.misc = PERF_RECORD_MISC_KERNEL; |
a1645ce1 ZY |
395 | filename = "/proc/kallsyms"; |
396 | } else { | |
9c90a61c | 397 | event->header.misc = PERF_RECORD_MISC_GUEST_KERNEL; |
23346f21 | 398 | if (machine__is_default_guest(machine)) |
a1645ce1 ZY |
399 | filename = (char *) symbol_conf.default_guest_kallsyms; |
400 | else { | |
23346f21 | 401 | sprintf(path, "%s/proc/kallsyms", machine->root_dir); |
a1645ce1 ZY |
402 | filename = path; |
403 | } | |
404 | } | |
405 | ||
406 | if (kallsyms__parse(filename, &args, find_symbol_cb) <= 0) | |
56b03f3c ACM |
407 | return -ENOENT; |
408 | ||
23346f21 | 409 | map = machine->vmlinux_maps[MAP__FUNCTION]; |
9c90a61c | 410 | size = snprintf(event->mmap.filename, sizeof(event->mmap.filename), |
a1645ce1 | 411 | "%s%s", mmap_name, symbol_name) + 1; |
56b03f3c | 412 | size = ALIGN(size, sizeof(u64)); |
9c90a61c ACM |
413 | event->mmap.header.type = PERF_RECORD_MMAP; |
414 | event->mmap.header.size = (sizeof(event->mmap) - | |
415 | (sizeof(event->mmap.filename) - size) + session->id_hdr_size); | |
416 | event->mmap.pgoff = args.start; | |
417 | event->mmap.start = map->start; | |
418 | event->mmap.len = map->end - event->mmap.start; | |
419 | event->mmap.pid = machine->pid; | |
420 | ||
421 | err = process(event, &synth_sample, session); | |
422 | free(event); | |
423 | ||
424 | return err; | |
56b03f3c ACM |
425 | } |
426 | ||
8a6c5b26 | 427 | static void thread__comm_adjust(struct thread *self, struct hists *hists) |
d599db3f ACM |
428 | { |
429 | char *comm = self->comm; | |
430 | ||
431 | if (!symbol_conf.col_width_list_str && !symbol_conf.field_sep && | |
432 | (!symbol_conf.comm_list || | |
433 | strlist__has_entry(symbol_conf.comm_list, comm))) { | |
8a6c5b26 | 434 | u16 slen = strlen(comm); |
d599db3f | 435 | |
8a6c5b26 ACM |
436 | if (hists__new_col_len(hists, HISTC_COMM, slen)) |
437 | hists__set_col_len(hists, HISTC_THREAD, slen + 6); | |
d599db3f ACM |
438 | } |
439 | } | |
440 | ||
8a6c5b26 ACM |
441 | static int thread__set_comm_adjust(struct thread *self, const char *comm, |
442 | struct hists *hists) | |
d599db3f ACM |
443 | { |
444 | int ret = thread__set_comm(self, comm); | |
445 | ||
446 | if (ret) | |
447 | return ret; | |
448 | ||
8a6c5b26 | 449 | thread__comm_adjust(self, hists); |
d599db3f ACM |
450 | |
451 | return 0; | |
452 | } | |
453 | ||
8115d60c ACM |
454 | int perf_event__process_comm(union perf_event *event, |
455 | struct perf_sample *sample __used, | |
456 | struct perf_session *session) | |
62daacb5 | 457 | { |
8115d60c | 458 | struct thread *thread = perf_session__findnew(session, event->comm.tid); |
62daacb5 | 459 | |
8115d60c | 460 | dump_printf(": %s:%d\n", event->comm.comm, event->comm.tid); |
62daacb5 | 461 | |
8115d60c | 462 | if (thread == NULL || thread__set_comm_adjust(thread, event->comm.comm, |
8a6c5b26 | 463 | &session->hists)) { |
62daacb5 ACM |
464 | dump_printf("problem processing PERF_RECORD_COMM, skipping event.\n"); |
465 | return -1; | |
466 | } | |
467 | ||
468 | return 0; | |
469 | } | |
470 | ||
8115d60c ACM |
471 | int perf_event__process_lost(union perf_event *event, |
472 | struct perf_sample *sample __used, | |
473 | struct perf_session *session) | |
62daacb5 | 474 | { |
9486aa38 | 475 | dump_printf(": id:%" PRIu64 ": lost:%" PRIu64 "\n", |
8115d60c ACM |
476 | event->lost.id, event->lost.lost); |
477 | session->hists.stats.total_lost += event->lost.lost; | |
62daacb5 ACM |
478 | return 0; |
479 | } | |
480 | ||
8115d60c ACM |
481 | static void perf_event__set_kernel_mmap_len(union perf_event *event, |
482 | struct map **maps) | |
a1645ce1 | 483 | { |
8115d60c ACM |
484 | maps[MAP__FUNCTION]->start = event->mmap.start; |
485 | maps[MAP__FUNCTION]->end = event->mmap.start + event->mmap.len; | |
a1645ce1 ZY |
486 | /* |
487 | * Be a bit paranoid here, some perf.data file came with | |
488 | * a zero sized synthesized MMAP event for the kernel. | |
489 | */ | |
490 | if (maps[MAP__FUNCTION]->end == 0) | |
9d1faba5 | 491 | maps[MAP__FUNCTION]->end = ~0ULL; |
a1645ce1 ZY |
492 | } |
493 | ||
8115d60c ACM |
494 | static int perf_event__process_kernel_mmap(union perf_event *event, |
495 | struct perf_session *session) | |
62daacb5 | 496 | { |
56b03f3c | 497 | struct map *map; |
a1645ce1 | 498 | char kmmap_prefix[PATH_MAX]; |
23346f21 | 499 | struct machine *machine; |
a1645ce1 ZY |
500 | enum dso_kernel_type kernel_type; |
501 | bool is_kernel_mmap; | |
502 | ||
8115d60c | 503 | machine = perf_session__findnew_machine(session, event->mmap.pid); |
23346f21 | 504 | if (!machine) { |
8115d60c | 505 | pr_err("Can't find id %d's machine\n", event->mmap.pid); |
a1645ce1 ZY |
506 | goto out_problem; |
507 | } | |
62daacb5 | 508 | |
48ea8f54 | 509 | machine__mmap_name(machine, kmmap_prefix, sizeof(kmmap_prefix)); |
23346f21 | 510 | if (machine__is_host(machine)) |
a1645ce1 ZY |
511 | kernel_type = DSO_TYPE_KERNEL; |
512 | else | |
513 | kernel_type = DSO_TYPE_GUEST_KERNEL; | |
62daacb5 | 514 | |
8115d60c | 515 | is_kernel_mmap = memcmp(event->mmap.filename, |
a1645ce1 ZY |
516 | kmmap_prefix, |
517 | strlen(kmmap_prefix)) == 0; | |
8115d60c ACM |
518 | if (event->mmap.filename[0] == '/' || |
519 | (!is_kernel_mmap && event->mmap.filename[0] == '[')) { | |
b7cece76 | 520 | |
a1645ce1 ZY |
521 | char short_module_name[1024]; |
522 | char *name, *dot; | |
b7cece76 | 523 | |
8115d60c ACM |
524 | if (event->mmap.filename[0] == '/') { |
525 | name = strrchr(event->mmap.filename, '/'); | |
b7cece76 ACM |
526 | if (name == NULL) |
527 | goto out_problem; | |
528 | ||
529 | ++name; /* skip / */ | |
530 | dot = strrchr(name, '.'); | |
531 | if (dot == NULL) | |
532 | goto out_problem; | |
b7cece76 | 533 | snprintf(short_module_name, sizeof(short_module_name), |
a1645ce1 | 534 | "[%.*s]", (int)(dot - name), name); |
b7cece76 | 535 | strxfrchar(short_module_name, '-', '_'); |
a1645ce1 | 536 | } else |
8115d60c | 537 | strcpy(short_module_name, event->mmap.filename); |
a1645ce1 | 538 | |
8115d60c ACM |
539 | map = machine__new_module(machine, event->mmap.start, |
540 | event->mmap.filename); | |
a1645ce1 ZY |
541 | if (map == NULL) |
542 | goto out_problem; | |
543 | ||
544 | name = strdup(short_module_name); | |
545 | if (name == NULL) | |
546 | goto out_problem; | |
547 | ||
548 | map->dso->short_name = name; | |
6e406257 | 549 | map->dso->sname_alloc = 1; |
8115d60c | 550 | map->end = map->start + event->mmap.len; |
a1645ce1 | 551 | } else if (is_kernel_mmap) { |
8115d60c | 552 | const char *symbol_name = (event->mmap.filename + |
a1645ce1 ZY |
553 | strlen(kmmap_prefix)); |
554 | /* | |
555 | * Should be there already, from the build-id table in | |
556 | * the header. | |
557 | */ | |
23346f21 ACM |
558 | struct dso *kernel = __dsos__findnew(&machine->kernel_dsos, |
559 | kmmap_prefix); | |
a1645ce1 ZY |
560 | if (kernel == NULL) |
561 | goto out_problem; | |
562 | ||
563 | kernel->kernel = kernel_type; | |
d28c6223 | 564 | if (__machine__create_kernel_maps(machine, kernel) < 0) |
a1645ce1 ZY |
565 | goto out_problem; |
566 | ||
8115d60c | 567 | perf_event__set_kernel_mmap_len(event, machine->vmlinux_maps); |
23346f21 ACM |
568 | perf_session__set_kallsyms_ref_reloc_sym(machine->vmlinux_maps, |
569 | symbol_name, | |
8115d60c | 570 | event->mmap.pgoff); |
23346f21 | 571 | if (machine__is_default_guest(machine)) { |
b7cece76 | 572 | /* |
a1645ce1 | 573 | * preload dso of guest kernel and modules |
b7cece76 | 574 | */ |
23346f21 ACM |
575 | dso__load(kernel, machine->vmlinux_maps[MAP__FUNCTION], |
576 | NULL); | |
a1645ce1 ZY |
577 | } |
578 | } | |
579 | return 0; | |
580 | out_problem: | |
581 | return -1; | |
582 | } | |
b7cece76 | 583 | |
8115d60c ACM |
584 | int perf_event__process_mmap(union perf_event *event, |
585 | struct perf_sample *sample __used, | |
586 | struct perf_session *session) | |
a1645ce1 | 587 | { |
23346f21 | 588 | struct machine *machine; |
a1645ce1 ZY |
589 | struct thread *thread; |
590 | struct map *map; | |
8115d60c | 591 | u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; |
a1645ce1 | 592 | int ret = 0; |
b7cece76 | 593 | |
9486aa38 | 594 | dump_printf(" %d/%d: [%#" PRIx64 "(%#" PRIx64 ") @ %#" PRIx64 "]: %s\n", |
8115d60c ACM |
595 | event->mmap.pid, event->mmap.tid, event->mmap.start, |
596 | event->mmap.len, event->mmap.pgoff, event->mmap.filename); | |
a1645ce1 ZY |
597 | |
598 | if (cpumode == PERF_RECORD_MISC_GUEST_KERNEL || | |
599 | cpumode == PERF_RECORD_MISC_KERNEL) { | |
8115d60c | 600 | ret = perf_event__process_kernel_mmap(event, session); |
a1645ce1 ZY |
601 | if (ret < 0) |
602 | goto out_problem; | |
56b03f3c ACM |
603 | return 0; |
604 | } | |
605 | ||
23346f21 | 606 | machine = perf_session__find_host_machine(session); |
4cc49458 ACM |
607 | if (machine == NULL) |
608 | goto out_problem; | |
8115d60c | 609 | thread = perf_session__findnew(session, event->mmap.pid); |
d65a458b ACM |
610 | if (thread == NULL) |
611 | goto out_problem; | |
8115d60c ACM |
612 | map = map__new(&machine->user_dsos, event->mmap.start, |
613 | event->mmap.len, event->mmap.pgoff, | |
614 | event->mmap.pid, event->mmap.filename, | |
361d1346 | 615 | MAP__FUNCTION); |
d65a458b | 616 | if (map == NULL) |
b7cece76 ACM |
617 | goto out_problem; |
618 | ||
619 | thread__insert_map(thread, map); | |
620 | return 0; | |
62daacb5 | 621 | |
b7cece76 ACM |
622 | out_problem: |
623 | dump_printf("problem processing PERF_RECORD_MMAP, skipping event.\n"); | |
62daacb5 ACM |
624 | return 0; |
625 | } | |
626 | ||
8115d60c ACM |
627 | int perf_event__process_task(union perf_event *event, |
628 | struct perf_sample *sample __used, | |
629 | struct perf_session *session) | |
62daacb5 | 630 | { |
8115d60c ACM |
631 | struct thread *thread = perf_session__findnew(session, event->fork.tid); |
632 | struct thread *parent = perf_session__findnew(session, event->fork.ptid); | |
62daacb5 | 633 | |
8115d60c ACM |
634 | dump_printf("(%d:%d):(%d:%d)\n", event->fork.pid, event->fork.tid, |
635 | event->fork.ppid, event->fork.ptid); | |
62daacb5 | 636 | |
8115d60c | 637 | if (event->header.type == PERF_RECORD_EXIT) { |
720a3aeb | 638 | perf_session__remove_thread(session, thread); |
62daacb5 | 639 | return 0; |
720a3aeb | 640 | } |
62daacb5 ACM |
641 | |
642 | if (thread == NULL || parent == NULL || | |
643 | thread__fork(thread, parent) < 0) { | |
644 | dump_printf("problem processing PERF_RECORD_FORK, skipping event.\n"); | |
645 | return -1; | |
646 | } | |
647 | ||
648 | return 0; | |
649 | } | |
1ed091c4 | 650 | |
8115d60c ACM |
651 | int perf_event__process(union perf_event *event, struct perf_sample *sample, |
652 | struct perf_session *session) | |
b83f920e SD |
653 | { |
654 | switch (event->header.type) { | |
655 | case PERF_RECORD_COMM: | |
8115d60c | 656 | perf_event__process_comm(event, sample, session); |
b83f920e SD |
657 | break; |
658 | case PERF_RECORD_MMAP: | |
8115d60c | 659 | perf_event__process_mmap(event, sample, session); |
b83f920e SD |
660 | break; |
661 | case PERF_RECORD_FORK: | |
662 | case PERF_RECORD_EXIT: | |
8115d60c | 663 | perf_event__process_task(event, sample, session); |
b83f920e | 664 | break; |
ef2bf6d0 | 665 | case PERF_RECORD_LOST: |
8115d60c | 666 | perf_event__process_lost(event, sample, session); |
b83f920e SD |
667 | default: |
668 | break; | |
669 | } | |
670 | ||
671 | return 0; | |
672 | } | |
673 | ||
59ee68ec ACM |
674 | void thread__find_addr_map(struct thread *self, |
675 | struct perf_session *session, u8 cpumode, | |
a1645ce1 | 676 | enum map_type type, pid_t pid, u64 addr, |
59ee68ec | 677 | struct addr_location *al) |
1ed091c4 | 678 | { |
9958e1f0 | 679 | struct map_groups *mg = &self->mg; |
23346f21 | 680 | struct machine *machine = NULL; |
1ed091c4 | 681 | |
9958e1f0 | 682 | al->thread = self; |
1ed091c4 | 683 | al->addr = addr; |
a1645ce1 ZY |
684 | al->cpumode = cpumode; |
685 | al->filtered = false; | |
1ed091c4 | 686 | |
a1645ce1 | 687 | if (cpumode == PERF_RECORD_MISC_KERNEL && perf_host) { |
1ed091c4 | 688 | al->level = 'k'; |
23346f21 | 689 | machine = perf_session__find_host_machine(session); |
4cc49458 ACM |
690 | if (machine == NULL) { |
691 | al->map = NULL; | |
692 | return; | |
693 | } | |
23346f21 | 694 | mg = &machine->kmaps; |
a1645ce1 | 695 | } else if (cpumode == PERF_RECORD_MISC_USER && perf_host) { |
1ed091c4 | 696 | al->level = '.'; |
23346f21 | 697 | machine = perf_session__find_host_machine(session); |
a1645ce1 ZY |
698 | } else if (cpumode == PERF_RECORD_MISC_GUEST_KERNEL && perf_guest) { |
699 | al->level = 'g'; | |
23346f21 | 700 | machine = perf_session__find_machine(session, pid); |
4cc49458 | 701 | if (machine == NULL) { |
a1645ce1 ZY |
702 | al->map = NULL; |
703 | return; | |
704 | } | |
23346f21 | 705 | mg = &machine->kmaps; |
a1645ce1 ZY |
706 | } else { |
707 | /* | |
708 | * 'u' means guest os user space. | |
709 | * TODO: We don't support guest user space. Might support late. | |
710 | */ | |
711 | if (cpumode == PERF_RECORD_MISC_GUEST_USER && perf_guest) | |
712 | al->level = 'u'; | |
713 | else | |
714 | al->level = 'H'; | |
1ed091c4 | 715 | al->map = NULL; |
a1645ce1 ZY |
716 | |
717 | if ((cpumode == PERF_RECORD_MISC_GUEST_USER || | |
718 | cpumode == PERF_RECORD_MISC_GUEST_KERNEL) && | |
719 | !perf_guest) | |
720 | al->filtered = true; | |
721 | if ((cpumode == PERF_RECORD_MISC_USER || | |
722 | cpumode == PERF_RECORD_MISC_KERNEL) && | |
723 | !perf_host) | |
724 | al->filtered = true; | |
725 | ||
1ed091c4 ACM |
726 | return; |
727 | } | |
728 | try_again: | |
9958e1f0 | 729 | al->map = map_groups__find(mg, type, al->addr); |
1ed091c4 ACM |
730 | if (al->map == NULL) { |
731 | /* | |
732 | * If this is outside of all known maps, and is a negative | |
733 | * address, try to look it up in the kernel dso, as it might be | |
734 | * a vsyscall or vdso (which executes in user-mode). | |
735 | * | |
736 | * XXX This is nasty, we should have a symbol list in the | |
737 | * "[vdso]" dso, but for now lets use the old trick of looking | |
738 | * in the whole kernel symbol list. | |
739 | */ | |
a1645ce1 | 740 | if ((long long)al->addr < 0 && |
23346f21 ACM |
741 | cpumode == PERF_RECORD_MISC_KERNEL && |
742 | machine && mg != &machine->kmaps) { | |
743 | mg = &machine->kmaps; | |
1ed091c4 ACM |
744 | goto try_again; |
745 | } | |
59ee68ec | 746 | } else |
1ed091c4 | 747 | al->addr = al->map->map_ip(al->map, al->addr); |
59ee68ec ACM |
748 | } |
749 | ||
750 | void thread__find_addr_location(struct thread *self, | |
751 | struct perf_session *session, u8 cpumode, | |
a1645ce1 | 752 | enum map_type type, pid_t pid, u64 addr, |
59ee68ec ACM |
753 | struct addr_location *al, |
754 | symbol_filter_t filter) | |
755 | { | |
a1645ce1 | 756 | thread__find_addr_map(self, session, cpumode, type, pid, addr, al); |
59ee68ec | 757 | if (al->map != NULL) |
9de89fe7 | 758 | al->sym = map__find_symbol(al->map, al->addr, filter); |
59ee68ec ACM |
759 | else |
760 | al->sym = NULL; | |
1ed091c4 ACM |
761 | } |
762 | ||
8a6c5b26 | 763 | static void dso__calc_col_width(struct dso *self, struct hists *hists) |
c410a338 ACM |
764 | { |
765 | if (!symbol_conf.col_width_list_str && !symbol_conf.field_sep && | |
766 | (!symbol_conf.dso_list || | |
767 | strlist__has_entry(symbol_conf.dso_list, self->name))) { | |
8a6c5b26 ACM |
768 | u16 slen = dso__name_len(self); |
769 | hists__new_col_len(hists, HISTC_DSO, slen); | |
c410a338 ACM |
770 | } |
771 | ||
772 | self->slen_calculated = 1; | |
773 | } | |
774 | ||
8115d60c ACM |
775 | int perf_event__preprocess_sample(const union perf_event *event, |
776 | struct perf_session *session, | |
777 | struct addr_location *al, | |
778 | struct perf_sample *sample, | |
779 | symbol_filter_t filter) | |
1ed091c4 | 780 | { |
8115d60c ACM |
781 | u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; |
782 | struct thread *thread = perf_session__findnew(session, event->ip.pid); | |
41a37e20 | 783 | |
1ed091c4 ACM |
784 | if (thread == NULL) |
785 | return -1; | |
786 | ||
c410a338 ACM |
787 | if (symbol_conf.comm_list && |
788 | !strlist__has_entry(symbol_conf.comm_list, thread->comm)) | |
789 | goto out_filtered; | |
790 | ||
1ed091c4 | 791 | dump_printf(" ... thread: %s:%d\n", thread->comm, thread->pid); |
1f626bc3 ACM |
792 | /* |
793 | * Have we already created the kernel maps for the host machine? | |
794 | * | |
795 | * This should have happened earlier, when we processed the kernel MMAP | |
796 | * events, but for older perf.data files there was no such thing, so do | |
797 | * it now. | |
798 | */ | |
799 | if (cpumode == PERF_RECORD_MISC_KERNEL && | |
800 | session->host_machine.vmlinux_maps[MAP__FUNCTION] == NULL) | |
801 | machine__create_kernel_maps(&session->host_machine); | |
1ed091c4 | 802 | |
96415e4d | 803 | thread__find_addr_map(thread, session, cpumode, MAP__FUNCTION, |
8115d60c | 804 | event->ip.pid, event->ip.ip, al); |
1ed091c4 ACM |
805 | dump_printf(" ...... dso: %s\n", |
806 | al->map ? al->map->dso->long_name : | |
807 | al->level == 'H' ? "[hypervisor]" : "<not found>"); | |
96415e4d | 808 | al->sym = NULL; |
8d50e5b4 | 809 | al->cpu = sample->cpu; |
96415e4d ACM |
810 | |
811 | if (al->map) { | |
812 | if (symbol_conf.dso_list && | |
813 | (!al->map || !al->map->dso || | |
814 | !(strlist__has_entry(symbol_conf.dso_list, | |
815 | al->map->dso->short_name) || | |
816 | (al->map->dso->short_name != al->map->dso->long_name && | |
817 | strlist__has_entry(symbol_conf.dso_list, | |
818 | al->map->dso->long_name))))) | |
819 | goto out_filtered; | |
820 | /* | |
821 | * We have to do this here as we may have a dso with no symbol | |
822 | * hit that has a name longer than the ones with symbols | |
823 | * sampled. | |
824 | */ | |
825 | if (!sort_dso.elide && !al->map->dso->slen_calculated) | |
8a6c5b26 | 826 | dso__calc_col_width(al->map->dso, &session->hists); |
96415e4d ACM |
827 | |
828 | al->sym = map__find_symbol(al->map, al->addr, filter); | |
3ceb0d44 ACM |
829 | } else { |
830 | const unsigned int unresolved_col_width = BITS_PER_LONG / 4; | |
831 | ||
8a6c5b26 | 832 | if (hists__col_len(&session->hists, HISTC_DSO) < unresolved_col_width && |
3ceb0d44 ACM |
833 | !symbol_conf.col_width_list_str && !symbol_conf.field_sep && |
834 | !symbol_conf.dso_list) | |
8a6c5b26 ACM |
835 | hists__set_col_len(&session->hists, HISTC_DSO, |
836 | unresolved_col_width); | |
96415e4d | 837 | } |
c410a338 ACM |
838 | |
839 | if (symbol_conf.sym_list && al->sym && | |
840 | !strlist__has_entry(symbol_conf.sym_list, al->sym->name)) | |
841 | goto out_filtered; | |
842 | ||
c410a338 ACM |
843 | return 0; |
844 | ||
845 | out_filtered: | |
846 | al->filtered = true; | |
1ed091c4 ACM |
847 | return 0; |
848 | } |