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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" |
234fbbf5 | 9 | |
3835bc00 | 10 | static const char *event__name[] = { |
c8446b9b ACM |
11 | [0] = "TOTAL", |
12 | [PERF_RECORD_MMAP] = "MMAP", | |
13 | [PERF_RECORD_LOST] = "LOST", | |
14 | [PERF_RECORD_COMM] = "COMM", | |
15 | [PERF_RECORD_EXIT] = "EXIT", | |
16 | [PERF_RECORD_THROTTLE] = "THROTTLE", | |
17 | [PERF_RECORD_UNTHROTTLE] = "UNTHROTTLE", | |
18 | [PERF_RECORD_FORK] = "FORK", | |
19 | [PERF_RECORD_READ] = "READ", | |
20 | [PERF_RECORD_SAMPLE] = "SAMPLE", | |
21 | [PERF_RECORD_HEADER_ATTR] = "ATTR", | |
22 | [PERF_RECORD_HEADER_EVENT_TYPE] = "EVENT_TYPE", | |
23 | [PERF_RECORD_HEADER_TRACING_DATA] = "TRACING_DATA", | |
24 | [PERF_RECORD_HEADER_BUILD_ID] = "BUILD_ID", | |
3835bc00 | 25 | [PERF_RECORD_FINISHED_ROUND] = "FINISHED_ROUND", |
c8446b9b ACM |
26 | }; |
27 | ||
3835bc00 TG |
28 | const char *event__get_event_name(unsigned int id) |
29 | { | |
30 | if (id >= ARRAY_SIZE(event__name)) | |
31 | return "INVALID"; | |
32 | if (!event__name[id]) | |
33 | return "UNKNOWN"; | |
34 | return event__name[id]; | |
35 | } | |
36 | ||
640c03ce ACM |
37 | static struct sample_data synth_sample = { |
38 | .pid = -1, | |
39 | .tid = -1, | |
40 | .time = -1, | |
41 | .stream_id = -1, | |
42 | .cpu = -1, | |
43 | .period = 1, | |
44 | }; | |
45 | ||
9c90a61c | 46 | static pid_t event__synthesize_comm(event_t *event, pid_t pid, int full, |
cf553114 | 47 | event__handler_t process, |
d8f66248 | 48 | struct perf_session *session) |
234fbbf5 | 49 | { |
234fbbf5 ACM |
50 | char filename[PATH_MAX]; |
51 | char bf[BUFSIZ]; | |
52 | FILE *fp; | |
53 | size_t size = 0; | |
54 | DIR *tasks; | |
55 | struct dirent dirent, *next; | |
56 | pid_t tgid = 0; | |
57 | ||
58 | snprintf(filename, sizeof(filename), "/proc/%d/status", pid); | |
59 | ||
60 | fp = fopen(filename, "r"); | |
61 | if (fp == NULL) { | |
62 | out_race: | |
63 | /* | |
64 | * We raced with a task exiting - just return: | |
65 | */ | |
66 | pr_debug("couldn't open %s\n", filename); | |
67 | return 0; | |
68 | } | |
69 | ||
9c90a61c ACM |
70 | memset(&event->comm, 0, sizeof(event->comm)); |
71 | ||
72 | while (!event->comm.comm[0] || !event->comm.pid) { | |
73 | if (fgets(bf, sizeof(bf), fp) == NULL) { | |
74 | pr_warning("couldn't get COMM and pgid, malformed %s\n", filename); | |
75 | goto out; | |
76 | } | |
234fbbf5 ACM |
77 | |
78 | if (memcmp(bf, "Name:", 5) == 0) { | |
79 | char *name = bf + 5; | |
80 | while (*name && isspace(*name)) | |
81 | ++name; | |
82 | size = strlen(name) - 1; | |
9c90a61c | 83 | memcpy(event->comm.comm, name, size++); |
234fbbf5 ACM |
84 | } else if (memcmp(bf, "Tgid:", 5) == 0) { |
85 | char *tgids = bf + 5; | |
86 | while (*tgids && isspace(*tgids)) | |
87 | ++tgids; | |
9c90a61c | 88 | tgid = event->comm.pid = atoi(tgids); |
234fbbf5 ACM |
89 | } |
90 | } | |
91 | ||
9c90a61c | 92 | event->comm.header.type = PERF_RECORD_COMM; |
234fbbf5 | 93 | size = ALIGN(size, sizeof(u64)); |
9c90a61c ACM |
94 | memset(event->comm.comm + size, 0, session->id_hdr_size); |
95 | event->comm.header.size = (sizeof(event->comm) - | |
96 | (sizeof(event->comm.comm) - size) + | |
97 | session->id_hdr_size); | |
234fbbf5 | 98 | if (!full) { |
9c90a61c | 99 | event->comm.tid = pid; |
234fbbf5 | 100 | |
9c90a61c ACM |
101 | process(event, &synth_sample, session); |
102 | goto out; | |
234fbbf5 ACM |
103 | } |
104 | ||
105 | snprintf(filename, sizeof(filename), "/proc/%d/task", pid); | |
106 | ||
107 | tasks = opendir(filename); | |
108 | if (tasks == NULL) | |
109 | goto out_race; | |
110 | ||
111 | while (!readdir_r(tasks, &dirent, &next) && next) { | |
112 | char *end; | |
113 | pid = strtol(dirent.d_name, &end, 10); | |
114 | if (*end) | |
115 | continue; | |
116 | ||
9c90a61c | 117 | event->comm.tid = pid; |
234fbbf5 | 118 | |
9c90a61c | 119 | process(event, &synth_sample, session); |
234fbbf5 | 120 | } |
234fbbf5 | 121 | |
9c90a61c ACM |
122 | closedir(tasks); |
123 | out: | |
234fbbf5 | 124 | fclose(fp); |
234fbbf5 | 125 | |
9c90a61c | 126 | return tgid; |
234fbbf5 ACM |
127 | } |
128 | ||
9c90a61c | 129 | static int event__synthesize_mmap_events(event_t *event, pid_t pid, pid_t tgid, |
cf553114 | 130 | event__handler_t process, |
d8f66248 | 131 | struct perf_session *session) |
234fbbf5 ACM |
132 | { |
133 | char filename[PATH_MAX]; | |
134 | FILE *fp; | |
135 | ||
136 | snprintf(filename, sizeof(filename), "/proc/%d/maps", pid); | |
137 | ||
138 | fp = fopen(filename, "r"); | |
139 | if (fp == NULL) { | |
140 | /* | |
141 | * We raced with a task exiting - just return: | |
142 | */ | |
143 | pr_debug("couldn't open %s\n", filename); | |
144 | return -1; | |
145 | } | |
146 | ||
9c90a61c ACM |
147 | event->header.type = PERF_RECORD_MMAP; |
148 | /* | |
149 | * Just like the kernel, see __perf_event_mmap in kernel/perf_event.c | |
150 | */ | |
151 | event->header.misc = PERF_RECORD_MISC_USER; | |
152 | ||
234fbbf5 ACM |
153 | while (1) { |
154 | char bf[BUFSIZ], *pbf = bf; | |
234fbbf5 ACM |
155 | int n; |
156 | size_t size; | |
157 | if (fgets(bf, sizeof(bf), fp) == NULL) | |
158 | break; | |
159 | ||
160 | /* 00400000-0040c000 r-xp 00000000 fd:01 41038 /bin/cat */ | |
9c90a61c | 161 | n = hex2u64(pbf, &event->mmap.start); |
234fbbf5 ACM |
162 | if (n < 0) |
163 | continue; | |
164 | pbf += n + 1; | |
9c90a61c | 165 | n = hex2u64(pbf, &event->mmap.len); |
234fbbf5 ACM |
166 | if (n < 0) |
167 | continue; | |
168 | pbf += n + 3; | |
169 | if (*pbf == 'x') { /* vm_exec */ | |
170 | char *execname = strchr(bf, '/'); | |
171 | ||
172 | /* Catch VDSO */ | |
173 | if (execname == NULL) | |
174 | execname = strstr(bf, "[vdso]"); | |
175 | ||
176 | if (execname == NULL) | |
177 | continue; | |
178 | ||
4af8b35d | 179 | pbf += 3; |
9c90a61c | 180 | n = hex2u64(pbf, &event->mmap.pgoff); |
4af8b35d | 181 | |
234fbbf5 ACM |
182 | size = strlen(execname); |
183 | execname[size - 1] = '\0'; /* Remove \n */ | |
9c90a61c | 184 | memcpy(event->mmap.filename, execname, size); |
234fbbf5 | 185 | size = ALIGN(size, sizeof(u64)); |
9c90a61c ACM |
186 | event->mmap.len -= event->mmap.start; |
187 | event->mmap.header.size = (sizeof(event->mmap) - | |
188 | (sizeof(event->mmap.filename) - size)); | |
189 | memset(event->mmap.filename + size, 0, session->id_hdr_size); | |
190 | event->mmap.header.size += session->id_hdr_size; | |
191 | event->mmap.pid = tgid; | |
192 | event->mmap.tid = pid; | |
193 | ||
194 | process(event, &synth_sample, session); | |
234fbbf5 ACM |
195 | } |
196 | } | |
197 | ||
198 | fclose(fp); | |
199 | return 0; | |
200 | } | |
201 | ||
b7cece76 | 202 | int event__synthesize_modules(event__handler_t process, |
a1645ce1 | 203 | struct perf_session *session, |
23346f21 | 204 | struct machine *machine) |
b7cece76 ACM |
205 | { |
206 | struct rb_node *nd; | |
23346f21 | 207 | struct map_groups *kmaps = &machine->kmaps; |
9c90a61c ACM |
208 | event_t *event = zalloc(sizeof(event->mmap) + session->id_hdr_size); |
209 | ||
210 | if (event == NULL) { | |
211 | pr_debug("Not enough memory synthesizing mmap event " | |
212 | "for kernel modules\n"); | |
213 | return -1; | |
214 | } | |
215 | ||
216 | event->header.type = PERF_RECORD_MMAP; | |
b7cece76 | 217 | |
a1645ce1 ZY |
218 | /* |
219 | * kernel uses 0 for user space maps, see kernel/perf_event.c | |
220 | * __perf_event_mmap | |
221 | */ | |
23346f21 | 222 | if (machine__is_host(machine)) |
9c90a61c | 223 | event->header.misc = PERF_RECORD_MISC_KERNEL; |
a1645ce1 | 224 | else |
9c90a61c | 225 | event->header.misc = PERF_RECORD_MISC_GUEST_KERNEL; |
a1645ce1 ZY |
226 | |
227 | for (nd = rb_first(&kmaps->maps[MAP__FUNCTION]); | |
b7cece76 | 228 | nd; nd = rb_next(nd)) { |
b7cece76 ACM |
229 | size_t size; |
230 | struct map *pos = rb_entry(nd, struct map, rb_node); | |
231 | ||
232 | if (pos->dso->kernel) | |
233 | continue; | |
234 | ||
235 | size = ALIGN(pos->dso->long_name_len + 1, sizeof(u64)); | |
9c90a61c ACM |
236 | event->mmap.header.type = PERF_RECORD_MMAP; |
237 | event->mmap.header.size = (sizeof(event->mmap) - | |
238 | (sizeof(event->mmap.filename) - size)); | |
239 | memset(event->mmap.filename + size, 0, session->id_hdr_size); | |
240 | event->mmap.header.size += session->id_hdr_size; | |
241 | event->mmap.start = pos->start; | |
242 | event->mmap.len = pos->end - pos->start; | |
243 | event->mmap.pid = machine->pid; | |
244 | ||
245 | memcpy(event->mmap.filename, pos->dso->long_name, | |
b7cece76 | 246 | pos->dso->long_name_len + 1); |
9c90a61c | 247 | process(event, &synth_sample, session); |
b7cece76 ACM |
248 | } |
249 | ||
9c90a61c | 250 | free(event); |
b7cece76 ACM |
251 | return 0; |
252 | } | |
253 | ||
9c90a61c ACM |
254 | static int __event__synthesize_thread(event_t *comm_event, event_t *mmap_event, |
255 | pid_t pid, event__handler_t process, | |
256 | struct perf_session *session) | |
234fbbf5 | 257 | { |
9c90a61c ACM |
258 | pid_t tgid = event__synthesize_comm(comm_event, pid, 1, process, |
259 | session); | |
234fbbf5 ACM |
260 | if (tgid == -1) |
261 | return -1; | |
9c90a61c ACM |
262 | return event__synthesize_mmap_events(mmap_event, pid, tgid, |
263 | process, session); | |
234fbbf5 ACM |
264 | } |
265 | ||
9c90a61c ACM |
266 | int event__synthesize_thread(pid_t pid, event__handler_t process, |
267 | struct perf_session *session) | |
268 | { | |
269 | event_t *comm_event, *mmap_event; | |
270 | int err = -1; | |
271 | ||
272 | comm_event = malloc(sizeof(comm_event->comm) + session->id_hdr_size); | |
273 | if (comm_event == NULL) | |
274 | goto out; | |
275 | ||
276 | mmap_event = malloc(sizeof(mmap_event->mmap) + session->id_hdr_size); | |
277 | if (mmap_event == NULL) | |
278 | goto out_free_comm; | |
279 | ||
280 | err = __event__synthesize_thread(comm_event, mmap_event, pid, | |
281 | process, session); | |
282 | free(mmap_event); | |
283 | out_free_comm: | |
284 | free(comm_event); | |
285 | out: | |
286 | return err; | |
287 | } | |
288 | ||
289 | int event__synthesize_threads(event__handler_t process, | |
290 | struct perf_session *session) | |
234fbbf5 ACM |
291 | { |
292 | DIR *proc; | |
293 | struct dirent dirent, *next; | |
9c90a61c ACM |
294 | event_t *comm_event, *mmap_event; |
295 | int err = -1; | |
296 | ||
297 | comm_event = malloc(sizeof(comm_event->comm) + session->id_hdr_size); | |
298 | if (comm_event == NULL) | |
299 | goto out; | |
300 | ||
301 | mmap_event = malloc(sizeof(mmap_event->mmap) + session->id_hdr_size); | |
302 | if (mmap_event == NULL) | |
303 | goto out_free_comm; | |
234fbbf5 ACM |
304 | |
305 | proc = opendir("/proc"); | |
9c90a61c ACM |
306 | if (proc == NULL) |
307 | goto out_free_mmap; | |
234fbbf5 ACM |
308 | |
309 | while (!readdir_r(proc, &dirent, &next) && next) { | |
310 | char *end; | |
311 | pid_t pid = strtol(dirent.d_name, &end, 10); | |
312 | ||
313 | if (*end) /* only interested in proper numerical dirents */ | |
314 | continue; | |
315 | ||
9c90a61c ACM |
316 | __event__synthesize_thread(comm_event, mmap_event, pid, |
317 | process, session); | |
234fbbf5 ACM |
318 | } |
319 | ||
320 | closedir(proc); | |
9c90a61c ACM |
321 | err = 0; |
322 | out_free_mmap: | |
323 | free(mmap_event); | |
324 | out_free_comm: | |
325 | free(comm_event); | |
326 | out: | |
327 | return err; | |
234fbbf5 | 328 | } |
62daacb5 | 329 | |
56b03f3c ACM |
330 | struct process_symbol_args { |
331 | const char *name; | |
332 | u64 start; | |
333 | }; | |
334 | ||
335 | static int find_symbol_cb(void *arg, const char *name, char type, u64 start) | |
336 | { | |
337 | struct process_symbol_args *args = arg; | |
338 | ||
881516eb ACM |
339 | /* |
340 | * Must be a function or at least an alias, as in PARISC64, where "_text" is | |
341 | * an 'A' to the same address as "_stext". | |
342 | */ | |
343 | if (!(symbol_type__is_a(type, MAP__FUNCTION) || | |
344 | type == 'A') || strcmp(name, args->name)) | |
56b03f3c ACM |
345 | return 0; |
346 | ||
347 | args->start = start; | |
348 | return 1; | |
349 | } | |
350 | ||
cf553114 | 351 | int event__synthesize_kernel_mmap(event__handler_t process, |
56b03f3c | 352 | struct perf_session *session, |
23346f21 | 353 | struct machine *machine, |
56b03f3c ACM |
354 | const char *symbol_name) |
355 | { | |
356 | size_t size; | |
a1645ce1 ZY |
357 | const char *filename, *mmap_name; |
358 | char path[PATH_MAX]; | |
359 | char name_buff[PATH_MAX]; | |
360 | struct map *map; | |
9c90a61c | 361 | int err; |
56b03f3c ACM |
362 | /* |
363 | * We should get this from /sys/kernel/sections/.text, but till that is | |
364 | * available use this, and after it is use this as a fallback for older | |
365 | * kernels. | |
366 | */ | |
367 | struct process_symbol_args args = { .name = symbol_name, }; | |
9c90a61c ACM |
368 | event_t *event = zalloc(sizeof(event->mmap) + session->id_hdr_size); |
369 | ||
370 | if (event == NULL) { | |
371 | pr_debug("Not enough memory synthesizing mmap event " | |
372 | "for kernel modules\n"); | |
373 | return -1; | |
374 | } | |
56b03f3c | 375 | |
48ea8f54 | 376 | mmap_name = machine__mmap_name(machine, name_buff, sizeof(name_buff)); |
23346f21 | 377 | if (machine__is_host(machine)) { |
a1645ce1 ZY |
378 | /* |
379 | * kernel uses PERF_RECORD_MISC_USER for user space maps, | |
380 | * see kernel/perf_event.c __perf_event_mmap | |
381 | */ | |
9c90a61c | 382 | event->header.misc = PERF_RECORD_MISC_KERNEL; |
a1645ce1 ZY |
383 | filename = "/proc/kallsyms"; |
384 | } else { | |
9c90a61c | 385 | event->header.misc = PERF_RECORD_MISC_GUEST_KERNEL; |
23346f21 | 386 | if (machine__is_default_guest(machine)) |
a1645ce1 ZY |
387 | filename = (char *) symbol_conf.default_guest_kallsyms; |
388 | else { | |
23346f21 | 389 | sprintf(path, "%s/proc/kallsyms", machine->root_dir); |
a1645ce1 ZY |
390 | filename = path; |
391 | } | |
392 | } | |
393 | ||
394 | if (kallsyms__parse(filename, &args, find_symbol_cb) <= 0) | |
56b03f3c ACM |
395 | return -ENOENT; |
396 | ||
23346f21 | 397 | map = machine->vmlinux_maps[MAP__FUNCTION]; |
9c90a61c | 398 | size = snprintf(event->mmap.filename, sizeof(event->mmap.filename), |
a1645ce1 | 399 | "%s%s", mmap_name, symbol_name) + 1; |
56b03f3c | 400 | size = ALIGN(size, sizeof(u64)); |
9c90a61c ACM |
401 | event->mmap.header.type = PERF_RECORD_MMAP; |
402 | event->mmap.header.size = (sizeof(event->mmap) - | |
403 | (sizeof(event->mmap.filename) - size) + session->id_hdr_size); | |
404 | event->mmap.pgoff = args.start; | |
405 | event->mmap.start = map->start; | |
406 | event->mmap.len = map->end - event->mmap.start; | |
407 | event->mmap.pid = machine->pid; | |
408 | ||
409 | err = process(event, &synth_sample, session); | |
410 | free(event); | |
411 | ||
412 | return err; | |
56b03f3c ACM |
413 | } |
414 | ||
8a6c5b26 | 415 | static void thread__comm_adjust(struct thread *self, struct hists *hists) |
d599db3f ACM |
416 | { |
417 | char *comm = self->comm; | |
418 | ||
419 | if (!symbol_conf.col_width_list_str && !symbol_conf.field_sep && | |
420 | (!symbol_conf.comm_list || | |
421 | strlist__has_entry(symbol_conf.comm_list, comm))) { | |
8a6c5b26 | 422 | u16 slen = strlen(comm); |
d599db3f | 423 | |
8a6c5b26 ACM |
424 | if (hists__new_col_len(hists, HISTC_COMM, slen)) |
425 | hists__set_col_len(hists, HISTC_THREAD, slen + 6); | |
d599db3f ACM |
426 | } |
427 | } | |
428 | ||
8a6c5b26 ACM |
429 | static int thread__set_comm_adjust(struct thread *self, const char *comm, |
430 | struct hists *hists) | |
d599db3f ACM |
431 | { |
432 | int ret = thread__set_comm(self, comm); | |
433 | ||
434 | if (ret) | |
435 | return ret; | |
436 | ||
8a6c5b26 | 437 | thread__comm_adjust(self, hists); |
d599db3f ACM |
438 | |
439 | return 0; | |
440 | } | |
441 | ||
640c03ce ACM |
442 | int event__process_comm(event_t *self, struct sample_data *sample __used, |
443 | struct perf_session *session) | |
62daacb5 | 444 | { |
13eb04fd | 445 | struct thread *thread = perf_session__findnew(session, self->comm.tid); |
62daacb5 | 446 | |
13eb04fd | 447 | dump_printf(": %s:%d\n", self->comm.comm, self->comm.tid); |
62daacb5 | 448 | |
8a6c5b26 ACM |
449 | if (thread == NULL || thread__set_comm_adjust(thread, self->comm.comm, |
450 | &session->hists)) { | |
62daacb5 ACM |
451 | dump_printf("problem processing PERF_RECORD_COMM, skipping event.\n"); |
452 | return -1; | |
453 | } | |
454 | ||
455 | return 0; | |
456 | } | |
457 | ||
640c03ce ACM |
458 | int event__process_lost(event_t *self, struct sample_data *sample __used, |
459 | struct perf_session *session) | |
62daacb5 ACM |
460 | { |
461 | dump_printf(": id:%Ld: lost:%Ld\n", self->lost.id, self->lost.lost); | |
cee75ac7 | 462 | session->hists.stats.total_lost += self->lost.lost; |
62daacb5 ACM |
463 | return 0; |
464 | } | |
465 | ||
a1645ce1 ZY |
466 | static void event_set_kernel_mmap_len(struct map **maps, event_t *self) |
467 | { | |
468 | maps[MAP__FUNCTION]->start = self->mmap.start; | |
469 | maps[MAP__FUNCTION]->end = self->mmap.start + self->mmap.len; | |
470 | /* | |
471 | * Be a bit paranoid here, some perf.data file came with | |
472 | * a zero sized synthesized MMAP event for the kernel. | |
473 | */ | |
474 | if (maps[MAP__FUNCTION]->end == 0) | |
9d1faba5 | 475 | maps[MAP__FUNCTION]->end = ~0ULL; |
a1645ce1 ZY |
476 | } |
477 | ||
478 | static int event__process_kernel_mmap(event_t *self, | |
479 | struct perf_session *session) | |
62daacb5 | 480 | { |
56b03f3c | 481 | struct map *map; |
a1645ce1 | 482 | char kmmap_prefix[PATH_MAX]; |
23346f21 | 483 | struct machine *machine; |
a1645ce1 ZY |
484 | enum dso_kernel_type kernel_type; |
485 | bool is_kernel_mmap; | |
486 | ||
23346f21 ACM |
487 | machine = perf_session__findnew_machine(session, self->mmap.pid); |
488 | if (!machine) { | |
489 | pr_err("Can't find id %d's machine\n", self->mmap.pid); | |
a1645ce1 ZY |
490 | goto out_problem; |
491 | } | |
62daacb5 | 492 | |
48ea8f54 | 493 | machine__mmap_name(machine, kmmap_prefix, sizeof(kmmap_prefix)); |
23346f21 | 494 | if (machine__is_host(machine)) |
a1645ce1 ZY |
495 | kernel_type = DSO_TYPE_KERNEL; |
496 | else | |
497 | kernel_type = DSO_TYPE_GUEST_KERNEL; | |
62daacb5 | 498 | |
a1645ce1 ZY |
499 | is_kernel_mmap = memcmp(self->mmap.filename, |
500 | kmmap_prefix, | |
501 | strlen(kmmap_prefix)) == 0; | |
502 | if (self->mmap.filename[0] == '/' || | |
503 | (!is_kernel_mmap && self->mmap.filename[0] == '[')) { | |
b7cece76 | 504 | |
a1645ce1 ZY |
505 | char short_module_name[1024]; |
506 | char *name, *dot; | |
b7cece76 | 507 | |
a1645ce1 ZY |
508 | if (self->mmap.filename[0] == '/') { |
509 | name = strrchr(self->mmap.filename, '/'); | |
b7cece76 ACM |
510 | if (name == NULL) |
511 | goto out_problem; | |
512 | ||
513 | ++name; /* skip / */ | |
514 | dot = strrchr(name, '.'); | |
515 | if (dot == NULL) | |
516 | goto out_problem; | |
b7cece76 | 517 | snprintf(short_module_name, sizeof(short_module_name), |
a1645ce1 | 518 | "[%.*s]", (int)(dot - name), name); |
b7cece76 | 519 | strxfrchar(short_module_name, '-', '_'); |
a1645ce1 ZY |
520 | } else |
521 | strcpy(short_module_name, self->mmap.filename); | |
522 | ||
d28c6223 ACM |
523 | map = machine__new_module(machine, self->mmap.start, |
524 | self->mmap.filename); | |
a1645ce1 ZY |
525 | if (map == NULL) |
526 | goto out_problem; | |
527 | ||
528 | name = strdup(short_module_name); | |
529 | if (name == NULL) | |
530 | goto out_problem; | |
531 | ||
532 | map->dso->short_name = name; | |
6e406257 | 533 | map->dso->sname_alloc = 1; |
a1645ce1 ZY |
534 | map->end = map->start + self->mmap.len; |
535 | } else if (is_kernel_mmap) { | |
536 | const char *symbol_name = (self->mmap.filename + | |
537 | strlen(kmmap_prefix)); | |
538 | /* | |
539 | * Should be there already, from the build-id table in | |
540 | * the header. | |
541 | */ | |
23346f21 ACM |
542 | struct dso *kernel = __dsos__findnew(&machine->kernel_dsos, |
543 | kmmap_prefix); | |
a1645ce1 ZY |
544 | if (kernel == NULL) |
545 | goto out_problem; | |
546 | ||
547 | kernel->kernel = kernel_type; | |
d28c6223 | 548 | if (__machine__create_kernel_maps(machine, kernel) < 0) |
a1645ce1 ZY |
549 | goto out_problem; |
550 | ||
23346f21 ACM |
551 | event_set_kernel_mmap_len(machine->vmlinux_maps, self); |
552 | perf_session__set_kallsyms_ref_reloc_sym(machine->vmlinux_maps, | |
553 | symbol_name, | |
554 | self->mmap.pgoff); | |
555 | if (machine__is_default_guest(machine)) { | |
b7cece76 | 556 | /* |
a1645ce1 | 557 | * preload dso of guest kernel and modules |
b7cece76 | 558 | */ |
23346f21 ACM |
559 | dso__load(kernel, machine->vmlinux_maps[MAP__FUNCTION], |
560 | NULL); | |
a1645ce1 ZY |
561 | } |
562 | } | |
563 | return 0; | |
564 | out_problem: | |
565 | return -1; | |
566 | } | |
b7cece76 | 567 | |
640c03ce ACM |
568 | int event__process_mmap(event_t *self, struct sample_data *sample __used, |
569 | struct perf_session *session) | |
a1645ce1 | 570 | { |
23346f21 | 571 | struct machine *machine; |
a1645ce1 ZY |
572 | struct thread *thread; |
573 | struct map *map; | |
574 | u8 cpumode = self->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; | |
575 | int ret = 0; | |
b7cece76 | 576 | |
a1645ce1 ZY |
577 | dump_printf(" %d/%d: [%#Lx(%#Lx) @ %#Lx]: %s\n", |
578 | self->mmap.pid, self->mmap.tid, self->mmap.start, | |
579 | self->mmap.len, self->mmap.pgoff, self->mmap.filename); | |
580 | ||
581 | if (cpumode == PERF_RECORD_MISC_GUEST_KERNEL || | |
582 | cpumode == PERF_RECORD_MISC_KERNEL) { | |
583 | ret = event__process_kernel_mmap(self, session); | |
584 | if (ret < 0) | |
585 | goto out_problem; | |
56b03f3c ACM |
586 | return 0; |
587 | } | |
588 | ||
23346f21 | 589 | machine = perf_session__find_host_machine(session); |
4cc49458 ACM |
590 | if (machine == NULL) |
591 | goto out_problem; | |
592 | thread = perf_session__findnew(session, self->mmap.pid); | |
d65a458b ACM |
593 | if (thread == NULL) |
594 | goto out_problem; | |
23346f21 | 595 | map = map__new(&machine->user_dsos, self->mmap.start, |
a1645ce1 ZY |
596 | self->mmap.len, self->mmap.pgoff, |
597 | self->mmap.pid, self->mmap.filename, | |
361d1346 | 598 | MAP__FUNCTION); |
d65a458b | 599 | if (map == NULL) |
b7cece76 ACM |
600 | goto out_problem; |
601 | ||
602 | thread__insert_map(thread, map); | |
603 | return 0; | |
62daacb5 | 604 | |
b7cece76 ACM |
605 | out_problem: |
606 | dump_printf("problem processing PERF_RECORD_MMAP, skipping event.\n"); | |
62daacb5 ACM |
607 | return 0; |
608 | } | |
609 | ||
640c03ce ACM |
610 | int event__process_task(event_t *self, struct sample_data *sample __used, |
611 | struct perf_session *session) | |
62daacb5 | 612 | { |
dd833d71 FW |
613 | struct thread *thread = perf_session__findnew(session, self->fork.tid); |
614 | struct thread *parent = perf_session__findnew(session, self->fork.ptid); | |
62daacb5 ACM |
615 | |
616 | dump_printf("(%d:%d):(%d:%d)\n", self->fork.pid, self->fork.tid, | |
617 | self->fork.ppid, self->fork.ptid); | |
62daacb5 | 618 | |
720a3aeb ACM |
619 | if (self->header.type == PERF_RECORD_EXIT) { |
620 | perf_session__remove_thread(session, thread); | |
62daacb5 | 621 | return 0; |
720a3aeb | 622 | } |
62daacb5 ACM |
623 | |
624 | if (thread == NULL || parent == NULL || | |
625 | thread__fork(thread, parent) < 0) { | |
626 | dump_printf("problem processing PERF_RECORD_FORK, skipping event.\n"); | |
627 | return -1; | |
628 | } | |
629 | ||
630 | return 0; | |
631 | } | |
1ed091c4 | 632 | |
640c03ce ACM |
633 | int event__process(event_t *event, struct sample_data *sample, |
634 | struct perf_session *session) | |
b83f920e SD |
635 | { |
636 | switch (event->header.type) { | |
637 | case PERF_RECORD_COMM: | |
640c03ce | 638 | event__process_comm(event, sample, session); |
b83f920e SD |
639 | break; |
640 | case PERF_RECORD_MMAP: | |
640c03ce | 641 | event__process_mmap(event, sample, session); |
b83f920e SD |
642 | break; |
643 | case PERF_RECORD_FORK: | |
644 | case PERF_RECORD_EXIT: | |
640c03ce | 645 | event__process_task(event, sample, session); |
b83f920e SD |
646 | break; |
647 | default: | |
648 | break; | |
649 | } | |
650 | ||
651 | return 0; | |
652 | } | |
653 | ||
59ee68ec ACM |
654 | void thread__find_addr_map(struct thread *self, |
655 | struct perf_session *session, u8 cpumode, | |
a1645ce1 | 656 | enum map_type type, pid_t pid, u64 addr, |
59ee68ec | 657 | struct addr_location *al) |
1ed091c4 | 658 | { |
9958e1f0 | 659 | struct map_groups *mg = &self->mg; |
23346f21 | 660 | struct machine *machine = NULL; |
1ed091c4 | 661 | |
9958e1f0 | 662 | al->thread = self; |
1ed091c4 | 663 | al->addr = addr; |
a1645ce1 ZY |
664 | al->cpumode = cpumode; |
665 | al->filtered = false; | |
1ed091c4 | 666 | |
a1645ce1 | 667 | if (cpumode == PERF_RECORD_MISC_KERNEL && perf_host) { |
1ed091c4 | 668 | al->level = 'k'; |
23346f21 | 669 | machine = perf_session__find_host_machine(session); |
4cc49458 ACM |
670 | if (machine == NULL) { |
671 | al->map = NULL; | |
672 | return; | |
673 | } | |
23346f21 | 674 | mg = &machine->kmaps; |
a1645ce1 | 675 | } else if (cpumode == PERF_RECORD_MISC_USER && perf_host) { |
1ed091c4 | 676 | al->level = '.'; |
23346f21 | 677 | machine = perf_session__find_host_machine(session); |
a1645ce1 ZY |
678 | } else if (cpumode == PERF_RECORD_MISC_GUEST_KERNEL && perf_guest) { |
679 | al->level = 'g'; | |
23346f21 | 680 | machine = perf_session__find_machine(session, pid); |
4cc49458 | 681 | if (machine == NULL) { |
a1645ce1 ZY |
682 | al->map = NULL; |
683 | return; | |
684 | } | |
23346f21 | 685 | mg = &machine->kmaps; |
a1645ce1 ZY |
686 | } else { |
687 | /* | |
688 | * 'u' means guest os user space. | |
689 | * TODO: We don't support guest user space. Might support late. | |
690 | */ | |
691 | if (cpumode == PERF_RECORD_MISC_GUEST_USER && perf_guest) | |
692 | al->level = 'u'; | |
693 | else | |
694 | al->level = 'H'; | |
1ed091c4 | 695 | al->map = NULL; |
a1645ce1 ZY |
696 | |
697 | if ((cpumode == PERF_RECORD_MISC_GUEST_USER || | |
698 | cpumode == PERF_RECORD_MISC_GUEST_KERNEL) && | |
699 | !perf_guest) | |
700 | al->filtered = true; | |
701 | if ((cpumode == PERF_RECORD_MISC_USER || | |
702 | cpumode == PERF_RECORD_MISC_KERNEL) && | |
703 | !perf_host) | |
704 | al->filtered = true; | |
705 | ||
1ed091c4 ACM |
706 | return; |
707 | } | |
708 | try_again: | |
9958e1f0 | 709 | al->map = map_groups__find(mg, type, al->addr); |
1ed091c4 ACM |
710 | if (al->map == NULL) { |
711 | /* | |
712 | * If this is outside of all known maps, and is a negative | |
713 | * address, try to look it up in the kernel dso, as it might be | |
714 | * a vsyscall or vdso (which executes in user-mode). | |
715 | * | |
716 | * XXX This is nasty, we should have a symbol list in the | |
717 | * "[vdso]" dso, but for now lets use the old trick of looking | |
718 | * in the whole kernel symbol list. | |
719 | */ | |
a1645ce1 | 720 | if ((long long)al->addr < 0 && |
23346f21 ACM |
721 | cpumode == PERF_RECORD_MISC_KERNEL && |
722 | machine && mg != &machine->kmaps) { | |
723 | mg = &machine->kmaps; | |
1ed091c4 ACM |
724 | goto try_again; |
725 | } | |
59ee68ec | 726 | } else |
1ed091c4 | 727 | al->addr = al->map->map_ip(al->map, al->addr); |
59ee68ec ACM |
728 | } |
729 | ||
730 | void thread__find_addr_location(struct thread *self, | |
731 | struct perf_session *session, u8 cpumode, | |
a1645ce1 | 732 | enum map_type type, pid_t pid, u64 addr, |
59ee68ec ACM |
733 | struct addr_location *al, |
734 | symbol_filter_t filter) | |
735 | { | |
a1645ce1 | 736 | thread__find_addr_map(self, session, cpumode, type, pid, addr, al); |
59ee68ec | 737 | if (al->map != NULL) |
9de89fe7 | 738 | al->sym = map__find_symbol(al->map, al->addr, filter); |
59ee68ec ACM |
739 | else |
740 | al->sym = NULL; | |
1ed091c4 ACM |
741 | } |
742 | ||
8a6c5b26 | 743 | static void dso__calc_col_width(struct dso *self, struct hists *hists) |
c410a338 ACM |
744 | { |
745 | if (!symbol_conf.col_width_list_str && !symbol_conf.field_sep && | |
746 | (!symbol_conf.dso_list || | |
747 | strlist__has_entry(symbol_conf.dso_list, self->name))) { | |
8a6c5b26 ACM |
748 | u16 slen = dso__name_len(self); |
749 | hists__new_col_len(hists, HISTC_DSO, slen); | |
c410a338 ACM |
750 | } |
751 | ||
752 | self->slen_calculated = 1; | |
753 | } | |
754 | ||
b3165f41 | 755 | int event__preprocess_sample(const event_t *self, struct perf_session *session, |
41a37e20 ACM |
756 | struct addr_location *al, struct sample_data *data, |
757 | symbol_filter_t filter) | |
1ed091c4 ACM |
758 | { |
759 | u8 cpumode = self->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; | |
640c03ce | 760 | struct thread *thread = perf_session__findnew(session, self->ip.pid); |
41a37e20 | 761 | |
1ed091c4 ACM |
762 | if (thread == NULL) |
763 | return -1; | |
764 | ||
c410a338 ACM |
765 | if (symbol_conf.comm_list && |
766 | !strlist__has_entry(symbol_conf.comm_list, thread->comm)) | |
767 | goto out_filtered; | |
768 | ||
1ed091c4 | 769 | dump_printf(" ... thread: %s:%d\n", thread->comm, thread->pid); |
1f626bc3 ACM |
770 | /* |
771 | * Have we already created the kernel maps for the host machine? | |
772 | * | |
773 | * This should have happened earlier, when we processed the kernel MMAP | |
774 | * events, but for older perf.data files there was no such thing, so do | |
775 | * it now. | |
776 | */ | |
777 | if (cpumode == PERF_RECORD_MISC_KERNEL && | |
778 | session->host_machine.vmlinux_maps[MAP__FUNCTION] == NULL) | |
779 | machine__create_kernel_maps(&session->host_machine); | |
1ed091c4 | 780 | |
96415e4d | 781 | thread__find_addr_map(thread, session, cpumode, MAP__FUNCTION, |
a1645ce1 | 782 | self->ip.pid, self->ip.ip, al); |
1ed091c4 ACM |
783 | dump_printf(" ...... dso: %s\n", |
784 | al->map ? al->map->dso->long_name : | |
785 | al->level == 'H' ? "[hypervisor]" : "<not found>"); | |
96415e4d | 786 | al->sym = NULL; |
f60f3593 | 787 | al->cpu = data->cpu; |
96415e4d ACM |
788 | |
789 | if (al->map) { | |
790 | if (symbol_conf.dso_list && | |
791 | (!al->map || !al->map->dso || | |
792 | !(strlist__has_entry(symbol_conf.dso_list, | |
793 | al->map->dso->short_name) || | |
794 | (al->map->dso->short_name != al->map->dso->long_name && | |
795 | strlist__has_entry(symbol_conf.dso_list, | |
796 | al->map->dso->long_name))))) | |
797 | goto out_filtered; | |
798 | /* | |
799 | * We have to do this here as we may have a dso with no symbol | |
800 | * hit that has a name longer than the ones with symbols | |
801 | * sampled. | |
802 | */ | |
803 | if (!sort_dso.elide && !al->map->dso->slen_calculated) | |
8a6c5b26 | 804 | dso__calc_col_width(al->map->dso, &session->hists); |
96415e4d ACM |
805 | |
806 | al->sym = map__find_symbol(al->map, al->addr, filter); | |
3ceb0d44 ACM |
807 | } else { |
808 | const unsigned int unresolved_col_width = BITS_PER_LONG / 4; | |
809 | ||
8a6c5b26 | 810 | if (hists__col_len(&session->hists, HISTC_DSO) < unresolved_col_width && |
3ceb0d44 ACM |
811 | !symbol_conf.col_width_list_str && !symbol_conf.field_sep && |
812 | !symbol_conf.dso_list) | |
8a6c5b26 ACM |
813 | hists__set_col_len(&session->hists, HISTC_DSO, |
814 | unresolved_col_width); | |
96415e4d | 815 | } |
c410a338 ACM |
816 | |
817 | if (symbol_conf.sym_list && al->sym && | |
818 | !strlist__has_entry(symbol_conf.sym_list, al->sym->name)) | |
819 | goto out_filtered; | |
820 | ||
c410a338 ACM |
821 | return 0; |
822 | ||
823 | out_filtered: | |
824 | al->filtered = true; | |
1ed091c4 ACM |
825 | return 0; |
826 | } | |
180f95e2 | 827 | |
9c90a61c ACM |
828 | static int event__parse_id_sample(const event_t *event, |
829 | struct perf_session *session, | |
830 | struct sample_data *sample) | |
831 | { | |
832 | const u64 *array; | |
833 | u64 type; | |
834 | ||
835 | sample->cpu = sample->pid = sample->tid = -1; | |
836 | sample->stream_id = sample->id = sample->time = -1ULL; | |
837 | ||
838 | if (!session->sample_id_all) | |
839 | return 0; | |
840 | ||
841 | array = event->sample.array; | |
842 | array += ((event->header.size - | |
843 | sizeof(event->header)) / sizeof(u64)) - 1; | |
844 | type = session->sample_type; | |
845 | ||
846 | if (type & PERF_SAMPLE_CPU) { | |
847 | u32 *p = (u32 *)array; | |
848 | sample->cpu = *p; | |
849 | array--; | |
850 | } | |
851 | ||
852 | if (type & PERF_SAMPLE_STREAM_ID) { | |
853 | sample->stream_id = *array; | |
854 | array--; | |
855 | } | |
856 | ||
857 | if (type & PERF_SAMPLE_ID) { | |
858 | sample->id = *array; | |
859 | array--; | |
860 | } | |
861 | ||
862 | if (type & PERF_SAMPLE_TIME) { | |
863 | sample->time = *array; | |
864 | array--; | |
865 | } | |
866 | ||
867 | if (type & PERF_SAMPLE_TID) { | |
868 | u32 *p = (u32 *)array; | |
869 | sample->pid = p[0]; | |
870 | sample->tid = p[1]; | |
871 | } | |
872 | ||
873 | return 0; | |
874 | } | |
875 | ||
876 | int event__parse_sample(const event_t *event, struct perf_session *session, | |
877 | struct sample_data *data) | |
180f95e2 | 878 | { |
9c90a61c ACM |
879 | const u64 *array; |
880 | u64 type; | |
881 | ||
882 | if (event->header.type != PERF_RECORD_SAMPLE) | |
883 | return event__parse_id_sample(event, session, data); | |
884 | ||
885 | array = event->sample.array; | |
886 | type = session->sample_type; | |
180f95e2 OH |
887 | |
888 | if (type & PERF_SAMPLE_IP) { | |
889 | data->ip = event->ip.ip; | |
890 | array++; | |
891 | } | |
892 | ||
893 | if (type & PERF_SAMPLE_TID) { | |
894 | u32 *p = (u32 *)array; | |
895 | data->pid = p[0]; | |
896 | data->tid = p[1]; | |
897 | array++; | |
898 | } | |
899 | ||
900 | if (type & PERF_SAMPLE_TIME) { | |
901 | data->time = *array; | |
902 | array++; | |
903 | } | |
904 | ||
905 | if (type & PERF_SAMPLE_ADDR) { | |
906 | data->addr = *array; | |
907 | array++; | |
908 | } | |
909 | ||
02bf60aa | 910 | data->id = -1ULL; |
180f95e2 OH |
911 | if (type & PERF_SAMPLE_ID) { |
912 | data->id = *array; | |
913 | array++; | |
914 | } | |
915 | ||
916 | if (type & PERF_SAMPLE_STREAM_ID) { | |
917 | data->stream_id = *array; | |
918 | array++; | |
919 | } | |
920 | ||
921 | if (type & PERF_SAMPLE_CPU) { | |
922 | u32 *p = (u32 *)array; | |
923 | data->cpu = *p; | |
924 | array++; | |
761844b9 SE |
925 | } else |
926 | data->cpu = -1; | |
180f95e2 OH |
927 | |
928 | if (type & PERF_SAMPLE_PERIOD) { | |
929 | data->period = *array; | |
930 | array++; | |
931 | } | |
932 | ||
933 | if (type & PERF_SAMPLE_READ) { | |
934 | pr_debug("PERF_SAMPLE_READ is unsuported for now\n"); | |
935 | return -1; | |
936 | } | |
937 | ||
938 | if (type & PERF_SAMPLE_CALLCHAIN) { | |
939 | data->callchain = (struct ip_callchain *)array; | |
940 | array += 1 + data->callchain->nr; | |
941 | } | |
942 | ||
943 | if (type & PERF_SAMPLE_RAW) { | |
944 | u32 *p = (u32 *)array; | |
945 | data->raw_size = *p; | |
946 | p++; | |
947 | data->raw_data = p; | |
948 | } | |
949 | ||
950 | return 0; | |
951 | } |