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 | ||
d20deb64 ACM |
47 | static pid_t perf_event__synthesize_comm(struct perf_event_ops *ops, |
48 | union perf_event *event, pid_t pid, | |
8115d60c ACM |
49 | int full, perf_event__handler_t process, |
50 | struct perf_session *session) | |
234fbbf5 | 51 | { |
234fbbf5 ACM |
52 | char filename[PATH_MAX]; |
53 | char bf[BUFSIZ]; | |
54 | FILE *fp; | |
55 | size_t size = 0; | |
56 | DIR *tasks; | |
57 | struct dirent dirent, *next; | |
58 | pid_t tgid = 0; | |
59 | ||
60 | snprintf(filename, sizeof(filename), "/proc/%d/status", pid); | |
61 | ||
62 | fp = fopen(filename, "r"); | |
63 | if (fp == NULL) { | |
64 | out_race: | |
65 | /* | |
66 | * We raced with a task exiting - just return: | |
67 | */ | |
68 | pr_debug("couldn't open %s\n", filename); | |
69 | return 0; | |
70 | } | |
71 | ||
9c90a61c ACM |
72 | memset(&event->comm, 0, sizeof(event->comm)); |
73 | ||
74 | while (!event->comm.comm[0] || !event->comm.pid) { | |
75 | if (fgets(bf, sizeof(bf), fp) == NULL) { | |
76 | pr_warning("couldn't get COMM and pgid, malformed %s\n", filename); | |
77 | goto out; | |
78 | } | |
234fbbf5 ACM |
79 | |
80 | if (memcmp(bf, "Name:", 5) == 0) { | |
81 | char *name = bf + 5; | |
82 | while (*name && isspace(*name)) | |
83 | ++name; | |
84 | size = strlen(name) - 1; | |
9c90a61c | 85 | memcpy(event->comm.comm, name, size++); |
234fbbf5 ACM |
86 | } else if (memcmp(bf, "Tgid:", 5) == 0) { |
87 | char *tgids = bf + 5; | |
88 | while (*tgids && isspace(*tgids)) | |
89 | ++tgids; | |
9c90a61c | 90 | tgid = event->comm.pid = atoi(tgids); |
234fbbf5 ACM |
91 | } |
92 | } | |
93 | ||
9c90a61c | 94 | event->comm.header.type = PERF_RECORD_COMM; |
234fbbf5 | 95 | size = ALIGN(size, sizeof(u64)); |
9c90a61c ACM |
96 | memset(event->comm.comm + size, 0, session->id_hdr_size); |
97 | event->comm.header.size = (sizeof(event->comm) - | |
98 | (sizeof(event->comm.comm) - size) + | |
99 | session->id_hdr_size); | |
234fbbf5 | 100 | if (!full) { |
9c90a61c | 101 | event->comm.tid = pid; |
234fbbf5 | 102 | |
d20deb64 | 103 | process(ops, event, &synth_sample, session); |
9c90a61c | 104 | goto out; |
234fbbf5 ACM |
105 | } |
106 | ||
107 | snprintf(filename, sizeof(filename), "/proc/%d/task", pid); | |
108 | ||
109 | tasks = opendir(filename); | |
110 | if (tasks == NULL) | |
111 | goto out_race; | |
112 | ||
113 | while (!readdir_r(tasks, &dirent, &next) && next) { | |
114 | char *end; | |
115 | pid = strtol(dirent.d_name, &end, 10); | |
116 | if (*end) | |
117 | continue; | |
118 | ||
9c90a61c | 119 | event->comm.tid = pid; |
234fbbf5 | 120 | |
d20deb64 | 121 | process(ops, event, &synth_sample, session); |
234fbbf5 | 122 | } |
234fbbf5 | 123 | |
9c90a61c ACM |
124 | closedir(tasks); |
125 | out: | |
234fbbf5 | 126 | fclose(fp); |
234fbbf5 | 127 | |
9c90a61c | 128 | return tgid; |
234fbbf5 ACM |
129 | } |
130 | ||
d20deb64 ACM |
131 | static int perf_event__synthesize_mmap_events(struct perf_event_ops *ops, |
132 | union perf_event *event, | |
8115d60c ACM |
133 | pid_t pid, pid_t tgid, |
134 | perf_event__handler_t process, | |
135 | struct perf_session *session) | |
234fbbf5 ACM |
136 | { |
137 | char filename[PATH_MAX]; | |
138 | FILE *fp; | |
139 | ||
140 | snprintf(filename, sizeof(filename), "/proc/%d/maps", pid); | |
141 | ||
142 | fp = fopen(filename, "r"); | |
143 | if (fp == NULL) { | |
144 | /* | |
145 | * We raced with a task exiting - just return: | |
146 | */ | |
147 | pr_debug("couldn't open %s\n", filename); | |
148 | return -1; | |
149 | } | |
150 | ||
9c90a61c ACM |
151 | event->header.type = PERF_RECORD_MMAP; |
152 | /* | |
153 | * Just like the kernel, see __perf_event_mmap in kernel/perf_event.c | |
154 | */ | |
155 | event->header.misc = PERF_RECORD_MISC_USER; | |
156 | ||
234fbbf5 ACM |
157 | while (1) { |
158 | char bf[BUFSIZ], *pbf = bf; | |
234fbbf5 ACM |
159 | int n; |
160 | size_t size; | |
161 | if (fgets(bf, sizeof(bf), fp) == NULL) | |
162 | break; | |
163 | ||
164 | /* 00400000-0040c000 r-xp 00000000 fd:01 41038 /bin/cat */ | |
9c90a61c | 165 | n = hex2u64(pbf, &event->mmap.start); |
234fbbf5 ACM |
166 | if (n < 0) |
167 | continue; | |
168 | pbf += n + 1; | |
9c90a61c | 169 | n = hex2u64(pbf, &event->mmap.len); |
234fbbf5 ACM |
170 | if (n < 0) |
171 | continue; | |
172 | pbf += n + 3; | |
173 | if (*pbf == 'x') { /* vm_exec */ | |
6a0e55d8 | 174 | char anonstr[] = "//anon\n"; |
234fbbf5 ACM |
175 | char *execname = strchr(bf, '/'); |
176 | ||
177 | /* Catch VDSO */ | |
178 | if (execname == NULL) | |
179 | execname = strstr(bf, "[vdso]"); | |
180 | ||
6a0e55d8 AB |
181 | /* Catch anonymous mmaps */ |
182 | if ((execname == NULL) && !strstr(bf, "[")) | |
183 | execname = anonstr; | |
184 | ||
234fbbf5 ACM |
185 | if (execname == NULL) |
186 | continue; | |
187 | ||
4af8b35d | 188 | pbf += 3; |
9c90a61c | 189 | n = hex2u64(pbf, &event->mmap.pgoff); |
4af8b35d | 190 | |
234fbbf5 ACM |
191 | size = strlen(execname); |
192 | execname[size - 1] = '\0'; /* Remove \n */ | |
9c90a61c | 193 | memcpy(event->mmap.filename, execname, size); |
234fbbf5 | 194 | size = ALIGN(size, sizeof(u64)); |
9c90a61c ACM |
195 | event->mmap.len -= event->mmap.start; |
196 | event->mmap.header.size = (sizeof(event->mmap) - | |
197 | (sizeof(event->mmap.filename) - size)); | |
198 | memset(event->mmap.filename + size, 0, session->id_hdr_size); | |
199 | event->mmap.header.size += session->id_hdr_size; | |
200 | event->mmap.pid = tgid; | |
201 | event->mmap.tid = pid; | |
202 | ||
d20deb64 | 203 | process(ops, event, &synth_sample, session); |
234fbbf5 ACM |
204 | } |
205 | } | |
206 | ||
207 | fclose(fp); | |
208 | return 0; | |
209 | } | |
210 | ||
d20deb64 ACM |
211 | int perf_event__synthesize_modules(struct perf_event_ops *ops, |
212 | perf_event__handler_t process, | |
8115d60c ACM |
213 | struct perf_session *session, |
214 | struct machine *machine) | |
b7cece76 ACM |
215 | { |
216 | struct rb_node *nd; | |
23346f21 | 217 | struct map_groups *kmaps = &machine->kmaps; |
8115d60c ACM |
218 | union perf_event *event = zalloc((sizeof(event->mmap) + |
219 | session->id_hdr_size)); | |
9c90a61c ACM |
220 | if (event == NULL) { |
221 | pr_debug("Not enough memory synthesizing mmap event " | |
222 | "for kernel modules\n"); | |
223 | return -1; | |
224 | } | |
225 | ||
226 | event->header.type = PERF_RECORD_MMAP; | |
b7cece76 | 227 | |
a1645ce1 ZY |
228 | /* |
229 | * kernel uses 0 for user space maps, see kernel/perf_event.c | |
230 | * __perf_event_mmap | |
231 | */ | |
23346f21 | 232 | if (machine__is_host(machine)) |
9c90a61c | 233 | event->header.misc = PERF_RECORD_MISC_KERNEL; |
a1645ce1 | 234 | else |
9c90a61c | 235 | event->header.misc = PERF_RECORD_MISC_GUEST_KERNEL; |
a1645ce1 ZY |
236 | |
237 | for (nd = rb_first(&kmaps->maps[MAP__FUNCTION]); | |
b7cece76 | 238 | nd; nd = rb_next(nd)) { |
b7cece76 ACM |
239 | size_t size; |
240 | struct map *pos = rb_entry(nd, struct map, rb_node); | |
241 | ||
242 | if (pos->dso->kernel) | |
243 | continue; | |
244 | ||
245 | size = ALIGN(pos->dso->long_name_len + 1, sizeof(u64)); | |
9c90a61c ACM |
246 | event->mmap.header.type = PERF_RECORD_MMAP; |
247 | event->mmap.header.size = (sizeof(event->mmap) - | |
248 | (sizeof(event->mmap.filename) - size)); | |
249 | memset(event->mmap.filename + size, 0, session->id_hdr_size); | |
250 | event->mmap.header.size += session->id_hdr_size; | |
251 | event->mmap.start = pos->start; | |
252 | event->mmap.len = pos->end - pos->start; | |
253 | event->mmap.pid = machine->pid; | |
254 | ||
255 | memcpy(event->mmap.filename, pos->dso->long_name, | |
b7cece76 | 256 | pos->dso->long_name_len + 1); |
d20deb64 | 257 | process(ops, event, &synth_sample, session); |
b7cece76 ACM |
258 | } |
259 | ||
9c90a61c | 260 | free(event); |
b7cece76 ACM |
261 | return 0; |
262 | } | |
263 | ||
8115d60c ACM |
264 | static int __event__synthesize_thread(union perf_event *comm_event, |
265 | union perf_event *mmap_event, | |
266 | pid_t pid, perf_event__handler_t process, | |
d20deb64 | 267 | struct perf_event_ops *ops, |
9c90a61c | 268 | struct perf_session *session) |
234fbbf5 | 269 | { |
d20deb64 | 270 | pid_t tgid = perf_event__synthesize_comm(ops, comm_event, pid, 1, process, |
9c90a61c | 271 | session); |
234fbbf5 ACM |
272 | if (tgid == -1) |
273 | return -1; | |
d20deb64 | 274 | return perf_event__synthesize_mmap_events(ops, mmap_event, pid, tgid, |
9c90a61c | 275 | process, session); |
234fbbf5 ACM |
276 | } |
277 | ||
d20deb64 ACM |
278 | int perf_event__synthesize_thread_map(struct perf_event_ops *ops, |
279 | struct thread_map *threads, | |
7c940c18 ACM |
280 | perf_event__handler_t process, |
281 | struct perf_session *session) | |
9c90a61c | 282 | { |
8115d60c | 283 | union perf_event *comm_event, *mmap_event; |
401b8e13 | 284 | int err = -1, thread; |
9c90a61c ACM |
285 | |
286 | comm_event = malloc(sizeof(comm_event->comm) + session->id_hdr_size); | |
287 | if (comm_event == NULL) | |
288 | goto out; | |
289 | ||
290 | mmap_event = malloc(sizeof(mmap_event->mmap) + session->id_hdr_size); | |
291 | if (mmap_event == NULL) | |
292 | goto out_free_comm; | |
293 | ||
401b8e13 ACM |
294 | err = 0; |
295 | for (thread = 0; thread < threads->nr; ++thread) { | |
296 | if (__event__synthesize_thread(comm_event, mmap_event, | |
297 | threads->map[thread], | |
d20deb64 | 298 | process, ops, session)) { |
401b8e13 ACM |
299 | err = -1; |
300 | break; | |
301 | } | |
302 | } | |
9c90a61c ACM |
303 | free(mmap_event); |
304 | out_free_comm: | |
305 | free(comm_event); | |
306 | out: | |
307 | return err; | |
308 | } | |
309 | ||
d20deb64 ACM |
310 | int perf_event__synthesize_threads(struct perf_event_ops *ops, |
311 | perf_event__handler_t process, | |
8115d60c | 312 | struct perf_session *session) |
234fbbf5 ACM |
313 | { |
314 | DIR *proc; | |
315 | struct dirent dirent, *next; | |
8115d60c | 316 | union perf_event *comm_event, *mmap_event; |
9c90a61c ACM |
317 | int err = -1; |
318 | ||
319 | comm_event = malloc(sizeof(comm_event->comm) + session->id_hdr_size); | |
320 | if (comm_event == NULL) | |
321 | goto out; | |
322 | ||
323 | mmap_event = malloc(sizeof(mmap_event->mmap) + session->id_hdr_size); | |
324 | if (mmap_event == NULL) | |
325 | goto out_free_comm; | |
234fbbf5 ACM |
326 | |
327 | proc = opendir("/proc"); | |
9c90a61c ACM |
328 | if (proc == NULL) |
329 | goto out_free_mmap; | |
234fbbf5 ACM |
330 | |
331 | while (!readdir_r(proc, &dirent, &next) && next) { | |
332 | char *end; | |
333 | pid_t pid = strtol(dirent.d_name, &end, 10); | |
334 | ||
335 | if (*end) /* only interested in proper numerical dirents */ | |
336 | continue; | |
337 | ||
9c90a61c | 338 | __event__synthesize_thread(comm_event, mmap_event, pid, |
d20deb64 | 339 | process, ops, session); |
234fbbf5 ACM |
340 | } |
341 | ||
342 | closedir(proc); | |
9c90a61c ACM |
343 | err = 0; |
344 | out_free_mmap: | |
345 | free(mmap_event); | |
346 | out_free_comm: | |
347 | free(comm_event); | |
348 | out: | |
349 | return err; | |
234fbbf5 | 350 | } |
62daacb5 | 351 | |
56b03f3c ACM |
352 | struct process_symbol_args { |
353 | const char *name; | |
354 | u64 start; | |
355 | }; | |
356 | ||
3b01a413 ACM |
357 | static int find_symbol_cb(void *arg, const char *name, char type, |
358 | u64 start, u64 end __used) | |
56b03f3c ACM |
359 | { |
360 | struct process_symbol_args *args = arg; | |
361 | ||
881516eb ACM |
362 | /* |
363 | * Must be a function or at least an alias, as in PARISC64, where "_text" is | |
364 | * an 'A' to the same address as "_stext". | |
365 | */ | |
366 | if (!(symbol_type__is_a(type, MAP__FUNCTION) || | |
367 | type == 'A') || strcmp(name, args->name)) | |
56b03f3c ACM |
368 | return 0; |
369 | ||
370 | args->start = start; | |
371 | return 1; | |
372 | } | |
373 | ||
d20deb64 ACM |
374 | int perf_event__synthesize_kernel_mmap(struct perf_event_ops *ops, |
375 | perf_event__handler_t process, | |
8115d60c ACM |
376 | struct perf_session *session, |
377 | struct machine *machine, | |
378 | const char *symbol_name) | |
56b03f3c ACM |
379 | { |
380 | size_t size; | |
a1645ce1 ZY |
381 | const char *filename, *mmap_name; |
382 | char path[PATH_MAX]; | |
383 | char name_buff[PATH_MAX]; | |
384 | struct map *map; | |
9c90a61c | 385 | int err; |
56b03f3c ACM |
386 | /* |
387 | * We should get this from /sys/kernel/sections/.text, but till that is | |
388 | * available use this, and after it is use this as a fallback for older | |
389 | * kernels. | |
390 | */ | |
391 | struct process_symbol_args args = { .name = symbol_name, }; | |
8115d60c ACM |
392 | union perf_event *event = zalloc((sizeof(event->mmap) + |
393 | session->id_hdr_size)); | |
9c90a61c ACM |
394 | if (event == NULL) { |
395 | pr_debug("Not enough memory synthesizing mmap event " | |
396 | "for kernel modules\n"); | |
397 | return -1; | |
398 | } | |
56b03f3c | 399 | |
48ea8f54 | 400 | mmap_name = machine__mmap_name(machine, name_buff, sizeof(name_buff)); |
23346f21 | 401 | if (machine__is_host(machine)) { |
a1645ce1 ZY |
402 | /* |
403 | * kernel uses PERF_RECORD_MISC_USER for user space maps, | |
404 | * see kernel/perf_event.c __perf_event_mmap | |
405 | */ | |
9c90a61c | 406 | event->header.misc = PERF_RECORD_MISC_KERNEL; |
a1645ce1 ZY |
407 | filename = "/proc/kallsyms"; |
408 | } else { | |
9c90a61c | 409 | event->header.misc = PERF_RECORD_MISC_GUEST_KERNEL; |
23346f21 | 410 | if (machine__is_default_guest(machine)) |
a1645ce1 ZY |
411 | filename = (char *) symbol_conf.default_guest_kallsyms; |
412 | else { | |
23346f21 | 413 | sprintf(path, "%s/proc/kallsyms", machine->root_dir); |
a1645ce1 ZY |
414 | filename = path; |
415 | } | |
416 | } | |
417 | ||
418 | if (kallsyms__parse(filename, &args, find_symbol_cb) <= 0) | |
56b03f3c ACM |
419 | return -ENOENT; |
420 | ||
23346f21 | 421 | map = machine->vmlinux_maps[MAP__FUNCTION]; |
9c90a61c | 422 | size = snprintf(event->mmap.filename, sizeof(event->mmap.filename), |
a1645ce1 | 423 | "%s%s", mmap_name, symbol_name) + 1; |
56b03f3c | 424 | size = ALIGN(size, sizeof(u64)); |
9c90a61c ACM |
425 | event->mmap.header.type = PERF_RECORD_MMAP; |
426 | event->mmap.header.size = (sizeof(event->mmap) - | |
427 | (sizeof(event->mmap.filename) - size) + session->id_hdr_size); | |
428 | event->mmap.pgoff = args.start; | |
429 | event->mmap.start = map->start; | |
430 | event->mmap.len = map->end - event->mmap.start; | |
431 | event->mmap.pid = machine->pid; | |
432 | ||
d20deb64 | 433 | err = process(ops, event, &synth_sample, session); |
9c90a61c ACM |
434 | free(event); |
435 | ||
436 | return err; | |
56b03f3c ACM |
437 | } |
438 | ||
d20deb64 ACM |
439 | int perf_event__process_comm(struct perf_event_ops *ops __used, |
440 | union perf_event *event, | |
8115d60c ACM |
441 | struct perf_sample *sample __used, |
442 | struct perf_session *session) | |
62daacb5 | 443 | { |
8115d60c | 444 | struct thread *thread = perf_session__findnew(session, event->comm.tid); |
62daacb5 | 445 | |
8115d60c | 446 | dump_printf(": %s:%d\n", event->comm.comm, event->comm.tid); |
62daacb5 | 447 | |
d7603d51 | 448 | if (thread == NULL || thread__set_comm(thread, event->comm.comm)) { |
62daacb5 ACM |
449 | dump_printf("problem processing PERF_RECORD_COMM, skipping event.\n"); |
450 | return -1; | |
451 | } | |
452 | ||
453 | return 0; | |
454 | } | |
455 | ||
d20deb64 ACM |
456 | int perf_event__process_lost(struct perf_event_ops *ops __used, |
457 | union perf_event *event, | |
8115d60c ACM |
458 | struct perf_sample *sample __used, |
459 | struct perf_session *session) | |
62daacb5 | 460 | { |
9486aa38 | 461 | dump_printf(": id:%" PRIu64 ": lost:%" PRIu64 "\n", |
8115d60c ACM |
462 | event->lost.id, event->lost.lost); |
463 | session->hists.stats.total_lost += event->lost.lost; | |
62daacb5 ACM |
464 | return 0; |
465 | } | |
466 | ||
8115d60c ACM |
467 | static void perf_event__set_kernel_mmap_len(union perf_event *event, |
468 | struct map **maps) | |
a1645ce1 | 469 | { |
8115d60c ACM |
470 | maps[MAP__FUNCTION]->start = event->mmap.start; |
471 | maps[MAP__FUNCTION]->end = event->mmap.start + event->mmap.len; | |
a1645ce1 ZY |
472 | /* |
473 | * Be a bit paranoid here, some perf.data file came with | |
474 | * a zero sized synthesized MMAP event for the kernel. | |
475 | */ | |
476 | if (maps[MAP__FUNCTION]->end == 0) | |
9d1faba5 | 477 | maps[MAP__FUNCTION]->end = ~0ULL; |
a1645ce1 ZY |
478 | } |
479 | ||
d20deb64 ACM |
480 | static int perf_event__process_kernel_mmap(struct perf_event_ops *ops __used, |
481 | union perf_event *event, | |
8115d60c | 482 | struct perf_session *session) |
62daacb5 | 483 | { |
56b03f3c | 484 | struct map *map; |
a1645ce1 | 485 | char kmmap_prefix[PATH_MAX]; |
23346f21 | 486 | struct machine *machine; |
a1645ce1 ZY |
487 | enum dso_kernel_type kernel_type; |
488 | bool is_kernel_mmap; | |
489 | ||
8115d60c | 490 | machine = perf_session__findnew_machine(session, event->mmap.pid); |
23346f21 | 491 | if (!machine) { |
8115d60c | 492 | pr_err("Can't find id %d's machine\n", event->mmap.pid); |
a1645ce1 ZY |
493 | goto out_problem; |
494 | } | |
62daacb5 | 495 | |
48ea8f54 | 496 | machine__mmap_name(machine, kmmap_prefix, sizeof(kmmap_prefix)); |
23346f21 | 497 | if (machine__is_host(machine)) |
a1645ce1 ZY |
498 | kernel_type = DSO_TYPE_KERNEL; |
499 | else | |
500 | kernel_type = DSO_TYPE_GUEST_KERNEL; | |
62daacb5 | 501 | |
8115d60c | 502 | is_kernel_mmap = memcmp(event->mmap.filename, |
a1645ce1 ZY |
503 | kmmap_prefix, |
504 | strlen(kmmap_prefix)) == 0; | |
8115d60c ACM |
505 | if (event->mmap.filename[0] == '/' || |
506 | (!is_kernel_mmap && event->mmap.filename[0] == '[')) { | |
b7cece76 | 507 | |
a1645ce1 ZY |
508 | char short_module_name[1024]; |
509 | char *name, *dot; | |
b7cece76 | 510 | |
8115d60c ACM |
511 | if (event->mmap.filename[0] == '/') { |
512 | name = strrchr(event->mmap.filename, '/'); | |
b7cece76 ACM |
513 | if (name == NULL) |
514 | goto out_problem; | |
515 | ||
516 | ++name; /* skip / */ | |
517 | dot = strrchr(name, '.'); | |
518 | if (dot == NULL) | |
519 | goto out_problem; | |
b7cece76 | 520 | snprintf(short_module_name, sizeof(short_module_name), |
a1645ce1 | 521 | "[%.*s]", (int)(dot - name), name); |
b7cece76 | 522 | strxfrchar(short_module_name, '-', '_'); |
a1645ce1 | 523 | } else |
8115d60c | 524 | strcpy(short_module_name, event->mmap.filename); |
a1645ce1 | 525 | |
8115d60c ACM |
526 | map = machine__new_module(machine, event->mmap.start, |
527 | event->mmap.filename); | |
a1645ce1 ZY |
528 | if (map == NULL) |
529 | goto out_problem; | |
530 | ||
531 | name = strdup(short_module_name); | |
532 | if (name == NULL) | |
533 | goto out_problem; | |
534 | ||
535 | map->dso->short_name = name; | |
6e406257 | 536 | map->dso->sname_alloc = 1; |
8115d60c | 537 | map->end = map->start + event->mmap.len; |
a1645ce1 | 538 | } else if (is_kernel_mmap) { |
8115d60c | 539 | const char *symbol_name = (event->mmap.filename + |
a1645ce1 ZY |
540 | strlen(kmmap_prefix)); |
541 | /* | |
542 | * Should be there already, from the build-id table in | |
543 | * the header. | |
544 | */ | |
23346f21 ACM |
545 | struct dso *kernel = __dsos__findnew(&machine->kernel_dsos, |
546 | kmmap_prefix); | |
a1645ce1 ZY |
547 | if (kernel == NULL) |
548 | goto out_problem; | |
549 | ||
550 | kernel->kernel = kernel_type; | |
d28c6223 | 551 | if (__machine__create_kernel_maps(machine, kernel) < 0) |
a1645ce1 ZY |
552 | goto out_problem; |
553 | ||
8115d60c | 554 | perf_event__set_kernel_mmap_len(event, machine->vmlinux_maps); |
ec80fde7 ACM |
555 | |
556 | /* | |
557 | * Avoid using a zero address (kptr_restrict) for the ref reloc | |
558 | * symbol. Effectively having zero here means that at record | |
559 | * time /proc/sys/kernel/kptr_restrict was non zero. | |
560 | */ | |
561 | if (event->mmap.pgoff != 0) { | |
562 | perf_session__set_kallsyms_ref_reloc_sym(machine->vmlinux_maps, | |
563 | symbol_name, | |
564 | event->mmap.pgoff); | |
565 | } | |
566 | ||
23346f21 | 567 | if (machine__is_default_guest(machine)) { |
b7cece76 | 568 | /* |
a1645ce1 | 569 | * preload dso of guest kernel and modules |
b7cece76 | 570 | */ |
23346f21 ACM |
571 | dso__load(kernel, machine->vmlinux_maps[MAP__FUNCTION], |
572 | NULL); | |
a1645ce1 ZY |
573 | } |
574 | } | |
575 | return 0; | |
576 | out_problem: | |
577 | return -1; | |
578 | } | |
b7cece76 | 579 | |
d20deb64 ACM |
580 | int perf_event__process_mmap(struct perf_event_ops *ops, |
581 | union perf_event *event, | |
8115d60c ACM |
582 | struct perf_sample *sample __used, |
583 | struct perf_session *session) | |
a1645ce1 | 584 | { |
23346f21 | 585 | struct machine *machine; |
a1645ce1 ZY |
586 | struct thread *thread; |
587 | struct map *map; | |
8115d60c | 588 | u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; |
a1645ce1 | 589 | int ret = 0; |
b7cece76 | 590 | |
9486aa38 | 591 | dump_printf(" %d/%d: [%#" PRIx64 "(%#" PRIx64 ") @ %#" PRIx64 "]: %s\n", |
8115d60c ACM |
592 | event->mmap.pid, event->mmap.tid, event->mmap.start, |
593 | event->mmap.len, event->mmap.pgoff, event->mmap.filename); | |
a1645ce1 ZY |
594 | |
595 | if (cpumode == PERF_RECORD_MISC_GUEST_KERNEL || | |
596 | cpumode == PERF_RECORD_MISC_KERNEL) { | |
d20deb64 | 597 | ret = perf_event__process_kernel_mmap(ops, event, session); |
a1645ce1 ZY |
598 | if (ret < 0) |
599 | goto out_problem; | |
56b03f3c ACM |
600 | return 0; |
601 | } | |
602 | ||
23346f21 | 603 | machine = perf_session__find_host_machine(session); |
4cc49458 ACM |
604 | if (machine == NULL) |
605 | goto out_problem; | |
8115d60c | 606 | thread = perf_session__findnew(session, event->mmap.pid); |
d65a458b ACM |
607 | if (thread == NULL) |
608 | goto out_problem; | |
8115d60c ACM |
609 | map = map__new(&machine->user_dsos, event->mmap.start, |
610 | event->mmap.len, event->mmap.pgoff, | |
611 | event->mmap.pid, event->mmap.filename, | |
361d1346 | 612 | MAP__FUNCTION); |
d65a458b | 613 | if (map == NULL) |
b7cece76 ACM |
614 | goto out_problem; |
615 | ||
616 | thread__insert_map(thread, map); | |
617 | return 0; | |
62daacb5 | 618 | |
b7cece76 ACM |
619 | out_problem: |
620 | dump_printf("problem processing PERF_RECORD_MMAP, skipping event.\n"); | |
62daacb5 ACM |
621 | return 0; |
622 | } | |
623 | ||
d20deb64 ACM |
624 | int perf_event__process_task(struct perf_event_ops *ops __used, |
625 | union perf_event *event, | |
8115d60c ACM |
626 | struct perf_sample *sample __used, |
627 | struct perf_session *session) | |
62daacb5 | 628 | { |
8115d60c ACM |
629 | struct thread *thread = perf_session__findnew(session, event->fork.tid); |
630 | struct thread *parent = perf_session__findnew(session, event->fork.ptid); | |
62daacb5 | 631 | |
8115d60c ACM |
632 | dump_printf("(%d:%d):(%d:%d)\n", event->fork.pid, event->fork.tid, |
633 | event->fork.ppid, event->fork.ptid); | |
62daacb5 | 634 | |
8115d60c | 635 | if (event->header.type == PERF_RECORD_EXIT) { |
720a3aeb | 636 | perf_session__remove_thread(session, thread); |
62daacb5 | 637 | return 0; |
720a3aeb | 638 | } |
62daacb5 ACM |
639 | |
640 | if (thread == NULL || parent == NULL || | |
641 | thread__fork(thread, parent) < 0) { | |
642 | dump_printf("problem processing PERF_RECORD_FORK, skipping event.\n"); | |
643 | return -1; | |
644 | } | |
645 | ||
646 | return 0; | |
647 | } | |
1ed091c4 | 648 | |
d20deb64 ACM |
649 | int perf_event__process(struct perf_event_ops *ops, union perf_event *event, |
650 | struct perf_sample *sample, struct perf_session *session) | |
b83f920e SD |
651 | { |
652 | switch (event->header.type) { | |
653 | case PERF_RECORD_COMM: | |
d20deb64 | 654 | perf_event__process_comm(ops, event, sample, session); |
b83f920e SD |
655 | break; |
656 | case PERF_RECORD_MMAP: | |
d20deb64 | 657 | perf_event__process_mmap(ops, event, sample, session); |
b83f920e SD |
658 | break; |
659 | case PERF_RECORD_FORK: | |
660 | case PERF_RECORD_EXIT: | |
d20deb64 | 661 | perf_event__process_task(ops, event, sample, session); |
b83f920e | 662 | break; |
ef2bf6d0 | 663 | case PERF_RECORD_LOST: |
d20deb64 | 664 | perf_event__process_lost(ops, event, sample, session); |
b83f920e SD |
665 | default: |
666 | break; | |
667 | } | |
668 | ||
669 | return 0; | |
670 | } | |
671 | ||
59ee68ec ACM |
672 | void thread__find_addr_map(struct thread *self, |
673 | struct perf_session *session, u8 cpumode, | |
a1645ce1 | 674 | enum map_type type, pid_t pid, u64 addr, |
59ee68ec | 675 | struct addr_location *al) |
1ed091c4 | 676 | { |
9958e1f0 | 677 | struct map_groups *mg = &self->mg; |
23346f21 | 678 | struct machine *machine = NULL; |
1ed091c4 | 679 | |
9958e1f0 | 680 | al->thread = self; |
1ed091c4 | 681 | al->addr = addr; |
a1645ce1 ZY |
682 | al->cpumode = cpumode; |
683 | al->filtered = false; | |
1ed091c4 | 684 | |
a1645ce1 | 685 | if (cpumode == PERF_RECORD_MISC_KERNEL && perf_host) { |
1ed091c4 | 686 | al->level = 'k'; |
23346f21 | 687 | machine = perf_session__find_host_machine(session); |
4cc49458 ACM |
688 | if (machine == NULL) { |
689 | al->map = NULL; | |
690 | return; | |
691 | } | |
23346f21 | 692 | mg = &machine->kmaps; |
a1645ce1 | 693 | } else if (cpumode == PERF_RECORD_MISC_USER && perf_host) { |
1ed091c4 | 694 | al->level = '.'; |
23346f21 | 695 | machine = perf_session__find_host_machine(session); |
a1645ce1 ZY |
696 | } else if (cpumode == PERF_RECORD_MISC_GUEST_KERNEL && perf_guest) { |
697 | al->level = 'g'; | |
23346f21 | 698 | machine = perf_session__find_machine(session, pid); |
4cc49458 | 699 | if (machine == NULL) { |
a1645ce1 ZY |
700 | al->map = NULL; |
701 | return; | |
702 | } | |
23346f21 | 703 | mg = &machine->kmaps; |
a1645ce1 ZY |
704 | } else { |
705 | /* | |
706 | * 'u' means guest os user space. | |
707 | * TODO: We don't support guest user space. Might support late. | |
708 | */ | |
709 | if (cpumode == PERF_RECORD_MISC_GUEST_USER && perf_guest) | |
710 | al->level = 'u'; | |
711 | else | |
712 | al->level = 'H'; | |
1ed091c4 | 713 | al->map = NULL; |
a1645ce1 ZY |
714 | |
715 | if ((cpumode == PERF_RECORD_MISC_GUEST_USER || | |
716 | cpumode == PERF_RECORD_MISC_GUEST_KERNEL) && | |
717 | !perf_guest) | |
718 | al->filtered = true; | |
719 | if ((cpumode == PERF_RECORD_MISC_USER || | |
720 | cpumode == PERF_RECORD_MISC_KERNEL) && | |
721 | !perf_host) | |
722 | al->filtered = true; | |
723 | ||
1ed091c4 ACM |
724 | return; |
725 | } | |
726 | try_again: | |
9958e1f0 | 727 | al->map = map_groups__find(mg, type, al->addr); |
1ed091c4 ACM |
728 | if (al->map == NULL) { |
729 | /* | |
730 | * If this is outside of all known maps, and is a negative | |
731 | * address, try to look it up in the kernel dso, as it might be | |
732 | * a vsyscall or vdso (which executes in user-mode). | |
733 | * | |
734 | * XXX This is nasty, we should have a symbol list in the | |
735 | * "[vdso]" dso, but for now lets use the old trick of looking | |
736 | * in the whole kernel symbol list. | |
737 | */ | |
a1645ce1 | 738 | if ((long long)al->addr < 0 && |
6c6804fb | 739 | cpumode == PERF_RECORD_MISC_USER && |
23346f21 ACM |
740 | machine && mg != &machine->kmaps) { |
741 | mg = &machine->kmaps; | |
1ed091c4 ACM |
742 | goto try_again; |
743 | } | |
59ee68ec | 744 | } else |
1ed091c4 | 745 | al->addr = al->map->map_ip(al->map, al->addr); |
59ee68ec ACM |
746 | } |
747 | ||
748 | void thread__find_addr_location(struct thread *self, | |
749 | struct perf_session *session, u8 cpumode, | |
a1645ce1 | 750 | enum map_type type, pid_t pid, u64 addr, |
59ee68ec ACM |
751 | struct addr_location *al, |
752 | symbol_filter_t filter) | |
753 | { | |
a1645ce1 | 754 | thread__find_addr_map(self, session, cpumode, type, pid, addr, al); |
59ee68ec | 755 | if (al->map != NULL) |
9de89fe7 | 756 | al->sym = map__find_symbol(al->map, al->addr, filter); |
59ee68ec ACM |
757 | else |
758 | al->sym = NULL; | |
1ed091c4 ACM |
759 | } |
760 | ||
8115d60c ACM |
761 | int perf_event__preprocess_sample(const union perf_event *event, |
762 | struct perf_session *session, | |
763 | struct addr_location *al, | |
764 | struct perf_sample *sample, | |
765 | symbol_filter_t filter) | |
1ed091c4 | 766 | { |
8115d60c ACM |
767 | u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; |
768 | struct thread *thread = perf_session__findnew(session, event->ip.pid); | |
41a37e20 | 769 | |
1ed091c4 ACM |
770 | if (thread == NULL) |
771 | return -1; | |
772 | ||
c410a338 ACM |
773 | if (symbol_conf.comm_list && |
774 | !strlist__has_entry(symbol_conf.comm_list, thread->comm)) | |
775 | goto out_filtered; | |
776 | ||
1ed091c4 | 777 | dump_printf(" ... thread: %s:%d\n", thread->comm, thread->pid); |
1f626bc3 ACM |
778 | /* |
779 | * Have we already created the kernel maps for the host machine? | |
780 | * | |
781 | * This should have happened earlier, when we processed the kernel MMAP | |
782 | * events, but for older perf.data files there was no such thing, so do | |
783 | * it now. | |
784 | */ | |
785 | if (cpumode == PERF_RECORD_MISC_KERNEL && | |
786 | session->host_machine.vmlinux_maps[MAP__FUNCTION] == NULL) | |
787 | machine__create_kernel_maps(&session->host_machine); | |
1ed091c4 | 788 | |
96415e4d | 789 | thread__find_addr_map(thread, session, cpumode, MAP__FUNCTION, |
8115d60c | 790 | event->ip.pid, event->ip.ip, al); |
1ed091c4 ACM |
791 | dump_printf(" ...... dso: %s\n", |
792 | al->map ? al->map->dso->long_name : | |
793 | al->level == 'H' ? "[hypervisor]" : "<not found>"); | |
96415e4d | 794 | al->sym = NULL; |
8d50e5b4 | 795 | al->cpu = sample->cpu; |
96415e4d ACM |
796 | |
797 | if (al->map) { | |
798 | if (symbol_conf.dso_list && | |
799 | (!al->map || !al->map->dso || | |
800 | !(strlist__has_entry(symbol_conf.dso_list, | |
801 | al->map->dso->short_name) || | |
802 | (al->map->dso->short_name != al->map->dso->long_name && | |
803 | strlist__has_entry(symbol_conf.dso_list, | |
804 | al->map->dso->long_name))))) | |
805 | goto out_filtered; | |
96415e4d ACM |
806 | |
807 | al->sym = map__find_symbol(al->map, al->addr, filter); | |
808 | } | |
c410a338 ACM |
809 | |
810 | if (symbol_conf.sym_list && al->sym && | |
811 | !strlist__has_entry(symbol_conf.sym_list, al->sym->name)) | |
812 | goto out_filtered; | |
813 | ||
c410a338 ACM |
814 | return 0; |
815 | ||
816 | out_filtered: | |
817 | al->filtered = true; | |
1ed091c4 ACM |
818 | return 0; |
819 | } |