Commit | Line | Data |
---|---|---|
234fbbf5 ACM |
1 | #include <linux/types.h> |
2 | #include "event.h" | |
3 | #include "debug.h" | |
f62d3f0f | 4 | #include "machine.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" |
c506c96b | 10 | #include "symbol/kallsyms.h" |
234fbbf5 | 11 | |
8115d60c | 12 | static const char *perf_event__names[] = { |
3cb6d154 FW |
13 | [0] = "TOTAL", |
14 | [PERF_RECORD_MMAP] = "MMAP", | |
5c5e854b | 15 | [PERF_RECORD_MMAP2] = "MMAP2", |
3cb6d154 FW |
16 | [PERF_RECORD_LOST] = "LOST", |
17 | [PERF_RECORD_COMM] = "COMM", | |
18 | [PERF_RECORD_EXIT] = "EXIT", | |
19 | [PERF_RECORD_THROTTLE] = "THROTTLE", | |
20 | [PERF_RECORD_UNTHROTTLE] = "UNTHROTTLE", | |
21 | [PERF_RECORD_FORK] = "FORK", | |
22 | [PERF_RECORD_READ] = "READ", | |
23 | [PERF_RECORD_SAMPLE] = "SAMPLE", | |
24 | [PERF_RECORD_HEADER_ATTR] = "ATTR", | |
25 | [PERF_RECORD_HEADER_EVENT_TYPE] = "EVENT_TYPE", | |
26 | [PERF_RECORD_HEADER_TRACING_DATA] = "TRACING_DATA", | |
27 | [PERF_RECORD_HEADER_BUILD_ID] = "BUILD_ID", | |
28 | [PERF_RECORD_FINISHED_ROUND] = "FINISHED_ROUND", | |
c8446b9b ACM |
29 | }; |
30 | ||
8115d60c | 31 | const char *perf_event__name(unsigned int id) |
3835bc00 | 32 | { |
8115d60c | 33 | if (id >= ARRAY_SIZE(perf_event__names)) |
3835bc00 | 34 | return "INVALID"; |
8115d60c | 35 | if (!perf_event__names[id]) |
3835bc00 | 36 | return "UNKNOWN"; |
8115d60c | 37 | return perf_event__names[id]; |
3835bc00 TG |
38 | } |
39 | ||
8d50e5b4 | 40 | static struct perf_sample synth_sample = { |
640c03ce ACM |
41 | .pid = -1, |
42 | .tid = -1, | |
43 | .time = -1, | |
44 | .stream_id = -1, | |
45 | .cpu = -1, | |
46 | .period = 1, | |
47 | }; | |
48 | ||
f5faf726 | 49 | static pid_t perf_event__get_comm_tgid(pid_t pid, char *comm, size_t len) |
234fbbf5 | 50 | { |
234fbbf5 ACM |
51 | char filename[PATH_MAX]; |
52 | char bf[BUFSIZ]; | |
53 | FILE *fp; | |
54 | size_t size = 0; | |
f5faf726 | 55 | pid_t tgid = -1; |
234fbbf5 ACM |
56 | |
57 | snprintf(filename, sizeof(filename), "/proc/%d/status", pid); | |
58 | ||
59 | fp = fopen(filename, "r"); | |
60 | if (fp == NULL) { | |
234fbbf5 ACM |
61 | pr_debug("couldn't open %s\n", filename); |
62 | return 0; | |
63 | } | |
64 | ||
f5faf726 | 65 | while (!comm[0] || (tgid < 0)) { |
9c90a61c | 66 | if (fgets(bf, sizeof(bf), fp) == NULL) { |
f5faf726 DA |
67 | pr_warning("couldn't get COMM and pgid, malformed %s\n", |
68 | filename); | |
69 | break; | |
9c90a61c | 70 | } |
234fbbf5 ACM |
71 | |
72 | if (memcmp(bf, "Name:", 5) == 0) { | |
73 | char *name = bf + 5; | |
74 | while (*name && isspace(*name)) | |
75 | ++name; | |
76 | size = strlen(name) - 1; | |
f5faf726 DA |
77 | if (size >= len) |
78 | size = len - 1; | |
79 | memcpy(comm, name, size); | |
cfbd70c1 | 80 | comm[size] = '\0'; |
f5faf726 | 81 | |
234fbbf5 ACM |
82 | } else if (memcmp(bf, "Tgid:", 5) == 0) { |
83 | char *tgids = bf + 5; | |
84 | while (*tgids && isspace(*tgids)) | |
85 | ++tgids; | |
f5faf726 | 86 | tgid = atoi(tgids); |
234fbbf5 ACM |
87 | } |
88 | } | |
89 | ||
f5faf726 DA |
90 | fclose(fp); |
91 | ||
92 | return tgid; | |
93 | } | |
94 | ||
95 | static pid_t perf_event__synthesize_comm(struct perf_tool *tool, | |
96 | union perf_event *event, pid_t pid, | |
97 | int full, | |
98 | perf_event__handler_t process, | |
99 | struct machine *machine) | |
100 | { | |
101 | char filename[PATH_MAX]; | |
102 | size_t size; | |
103 | DIR *tasks; | |
104 | struct dirent dirent, *next; | |
105 | pid_t tgid; | |
106 | ||
107 | memset(&event->comm, 0, sizeof(event->comm)); | |
108 | ||
109 | tgid = perf_event__get_comm_tgid(pid, event->comm.comm, | |
110 | sizeof(event->comm.comm)); | |
111 | if (tgid < 0) | |
112 | goto out; | |
113 | ||
114 | event->comm.pid = tgid; | |
9c90a61c | 115 | event->comm.header.type = PERF_RECORD_COMM; |
f5faf726 DA |
116 | |
117 | size = strlen(event->comm.comm) + 1; | |
9ac3e487 | 118 | size = PERF_ALIGN(size, sizeof(u64)); |
743eb868 | 119 | memset(event->comm.comm + size, 0, machine->id_hdr_size); |
9c90a61c ACM |
120 | event->comm.header.size = (sizeof(event->comm) - |
121 | (sizeof(event->comm.comm) - size) + | |
743eb868 | 122 | machine->id_hdr_size); |
234fbbf5 | 123 | if (!full) { |
9c90a61c | 124 | event->comm.tid = pid; |
234fbbf5 | 125 | |
1e6d5322 DA |
126 | if (process(tool, event, &synth_sample, machine) != 0) |
127 | return -1; | |
128 | ||
9c90a61c | 129 | goto out; |
234fbbf5 ACM |
130 | } |
131 | ||
99563465 DY |
132 | snprintf(filename, sizeof(filename), "%s/proc/%d/task", |
133 | machine->root_dir, pid); | |
234fbbf5 ACM |
134 | |
135 | tasks = opendir(filename); | |
f5faf726 DA |
136 | if (tasks == NULL) { |
137 | pr_debug("couldn't open %s\n", filename); | |
138 | return 0; | |
139 | } | |
234fbbf5 ACM |
140 | |
141 | while (!readdir_r(tasks, &dirent, &next) && next) { | |
142 | char *end; | |
143 | pid = strtol(dirent.d_name, &end, 10); | |
144 | if (*end) | |
145 | continue; | |
146 | ||
f5faf726 DA |
147 | /* already have tgid; jut want to update the comm */ |
148 | (void) perf_event__get_comm_tgid(pid, event->comm.comm, | |
149 | sizeof(event->comm.comm)); | |
150 | ||
151 | size = strlen(event->comm.comm) + 1; | |
9ac3e487 | 152 | size = PERF_ALIGN(size, sizeof(u64)); |
f5faf726 DA |
153 | memset(event->comm.comm + size, 0, machine->id_hdr_size); |
154 | event->comm.header.size = (sizeof(event->comm) - | |
155 | (sizeof(event->comm.comm) - size) + | |
156 | machine->id_hdr_size); | |
157 | ||
9c90a61c | 158 | event->comm.tid = pid; |
234fbbf5 | 159 | |
1e6d5322 DA |
160 | if (process(tool, event, &synth_sample, machine) != 0) { |
161 | tgid = -1; | |
162 | break; | |
163 | } | |
234fbbf5 | 164 | } |
234fbbf5 | 165 | |
9c90a61c ACM |
166 | closedir(tasks); |
167 | out: | |
9c90a61c | 168 | return tgid; |
234fbbf5 ACM |
169 | } |
170 | ||
45694aa7 | 171 | static int perf_event__synthesize_mmap_events(struct perf_tool *tool, |
d20deb64 | 172 | union perf_event *event, |
8115d60c ACM |
173 | pid_t pid, pid_t tgid, |
174 | perf_event__handler_t process, | |
62605dc5 ACM |
175 | struct machine *machine, |
176 | bool mmap_data) | |
234fbbf5 ACM |
177 | { |
178 | char filename[PATH_MAX]; | |
179 | FILE *fp; | |
1e6d5322 | 180 | int rc = 0; |
234fbbf5 | 181 | |
99563465 DY |
182 | snprintf(filename, sizeof(filename), "%s/proc/%d/maps", |
183 | machine->root_dir, pid); | |
234fbbf5 ACM |
184 | |
185 | fp = fopen(filename, "r"); | |
186 | if (fp == NULL) { | |
187 | /* | |
188 | * We raced with a task exiting - just return: | |
189 | */ | |
190 | pr_debug("couldn't open %s\n", filename); | |
191 | return -1; | |
192 | } | |
193 | ||
3090ffb5 | 194 | event->header.type = PERF_RECORD_MMAP; |
9c90a61c | 195 | |
234fbbf5 | 196 | while (1) { |
60648033 NK |
197 | char bf[BUFSIZ]; |
198 | char prot[5]; | |
199 | char execname[PATH_MAX]; | |
200 | char anonstr[] = "//anon"; | |
234fbbf5 | 201 | size_t size; |
5c5e854b | 202 | ssize_t n; |
60648033 | 203 | |
234fbbf5 ACM |
204 | if (fgets(bf, sizeof(bf), fp) == NULL) |
205 | break; | |
206 | ||
60648033 NK |
207 | /* ensure null termination since stack will be reused. */ |
208 | strcpy(execname, ""); | |
209 | ||
234fbbf5 | 210 | /* 00400000-0040c000 r-xp 00000000 fd:01 41038 /bin/cat */ |
3090ffb5 SE |
211 | n = sscanf(bf, "%"PRIx64"-%"PRIx64" %s %"PRIx64" %*x:%*x %*u %s\n", |
212 | &event->mmap.start, &event->mmap.len, prot, | |
213 | &event->mmap.pgoff, | |
214 | execname); | |
9d4ecc88 DZ |
215 | /* |
216 | * Anon maps don't have the execname. | |
217 | */ | |
218 | if (n < 4) | |
5c5e854b | 219 | continue; |
62605dc5 ACM |
220 | /* |
221 | * Just like the kernel, see __perf_event_mmap in kernel/perf_event.c | |
222 | */ | |
73547aac DY |
223 | if (machine__is_host(machine)) |
224 | event->header.misc = PERF_RECORD_MISC_USER; | |
225 | else | |
226 | event->header.misc = PERF_RECORD_MISC_GUEST_USER; | |
60648033 | 227 | |
62605dc5 ACM |
228 | if (prot[2] != 'x') { |
229 | if (!mmap_data || prot[0] != 'r') | |
230 | continue; | |
231 | ||
232 | event->header.misc |= PERF_RECORD_MISC_MMAP_DATA; | |
233 | } | |
60648033 NK |
234 | |
235 | if (!strcmp(execname, "")) | |
236 | strcpy(execname, anonstr); | |
237 | ||
238 | size = strlen(execname) + 1; | |
3090ffb5 | 239 | memcpy(event->mmap.filename, execname, size); |
60648033 | 240 | size = PERF_ALIGN(size, sizeof(u64)); |
3090ffb5 SE |
241 | event->mmap.len -= event->mmap.start; |
242 | event->mmap.header.size = (sizeof(event->mmap) - | |
243 | (sizeof(event->mmap.filename) - size)); | |
244 | memset(event->mmap.filename + size, 0, machine->id_hdr_size); | |
245 | event->mmap.header.size += machine->id_hdr_size; | |
246 | event->mmap.pid = tgid; | |
247 | event->mmap.tid = pid; | |
60648033 NK |
248 | |
249 | if (process(tool, event, &synth_sample, machine) != 0) { | |
250 | rc = -1; | |
251 | break; | |
234fbbf5 ACM |
252 | } |
253 | } | |
254 | ||
255 | fclose(fp); | |
1e6d5322 | 256 | return rc; |
234fbbf5 ACM |
257 | } |
258 | ||
45694aa7 | 259 | int perf_event__synthesize_modules(struct perf_tool *tool, |
d20deb64 | 260 | perf_event__handler_t process, |
8115d60c | 261 | struct machine *machine) |
b7cece76 | 262 | { |
1e6d5322 | 263 | int rc = 0; |
b7cece76 | 264 | struct rb_node *nd; |
23346f21 | 265 | struct map_groups *kmaps = &machine->kmaps; |
8115d60c | 266 | union perf_event *event = zalloc((sizeof(event->mmap) + |
743eb868 | 267 | machine->id_hdr_size)); |
9c90a61c ACM |
268 | if (event == NULL) { |
269 | pr_debug("Not enough memory synthesizing mmap event " | |
270 | "for kernel modules\n"); | |
271 | return -1; | |
272 | } | |
273 | ||
274 | event->header.type = PERF_RECORD_MMAP; | |
b7cece76 | 275 | |
a1645ce1 ZY |
276 | /* |
277 | * kernel uses 0 for user space maps, see kernel/perf_event.c | |
278 | * __perf_event_mmap | |
279 | */ | |
23346f21 | 280 | if (machine__is_host(machine)) |
9c90a61c | 281 | event->header.misc = PERF_RECORD_MISC_KERNEL; |
a1645ce1 | 282 | else |
9c90a61c | 283 | event->header.misc = PERF_RECORD_MISC_GUEST_KERNEL; |
a1645ce1 ZY |
284 | |
285 | for (nd = rb_first(&kmaps->maps[MAP__FUNCTION]); | |
b7cece76 | 286 | nd; nd = rb_next(nd)) { |
b7cece76 ACM |
287 | size_t size; |
288 | struct map *pos = rb_entry(nd, struct map, rb_node); | |
289 | ||
290 | if (pos->dso->kernel) | |
291 | continue; | |
292 | ||
9ac3e487 | 293 | size = PERF_ALIGN(pos->dso->long_name_len + 1, sizeof(u64)); |
9c90a61c ACM |
294 | event->mmap.header.type = PERF_RECORD_MMAP; |
295 | event->mmap.header.size = (sizeof(event->mmap) - | |
296 | (sizeof(event->mmap.filename) - size)); | |
743eb868 ACM |
297 | memset(event->mmap.filename + size, 0, machine->id_hdr_size); |
298 | event->mmap.header.size += machine->id_hdr_size; | |
9c90a61c ACM |
299 | event->mmap.start = pos->start; |
300 | event->mmap.len = pos->end - pos->start; | |
301 | event->mmap.pid = machine->pid; | |
302 | ||
303 | memcpy(event->mmap.filename, pos->dso->long_name, | |
b7cece76 | 304 | pos->dso->long_name_len + 1); |
1e6d5322 DA |
305 | if (process(tool, event, &synth_sample, machine) != 0) { |
306 | rc = -1; | |
307 | break; | |
308 | } | |
b7cece76 ACM |
309 | } |
310 | ||
9c90a61c | 311 | free(event); |
1e6d5322 | 312 | return rc; |
b7cece76 ACM |
313 | } |
314 | ||
8115d60c ACM |
315 | static int __event__synthesize_thread(union perf_event *comm_event, |
316 | union perf_event *mmap_event, | |
defd8d38 DA |
317 | pid_t pid, int full, |
318 | perf_event__handler_t process, | |
45694aa7 | 319 | struct perf_tool *tool, |
62605dc5 | 320 | struct machine *machine, bool mmap_data) |
234fbbf5 | 321 | { |
defd8d38 | 322 | pid_t tgid = perf_event__synthesize_comm(tool, comm_event, pid, full, |
743eb868 | 323 | process, machine); |
234fbbf5 ACM |
324 | if (tgid == -1) |
325 | return -1; | |
45694aa7 | 326 | return perf_event__synthesize_mmap_events(tool, mmap_event, pid, tgid, |
62605dc5 | 327 | process, machine, mmap_data); |
234fbbf5 ACM |
328 | } |
329 | ||
45694aa7 | 330 | int perf_event__synthesize_thread_map(struct perf_tool *tool, |
d20deb64 | 331 | struct thread_map *threads, |
7c940c18 | 332 | perf_event__handler_t process, |
62605dc5 ACM |
333 | struct machine *machine, |
334 | bool mmap_data) | |
9c90a61c | 335 | { |
8115d60c | 336 | union perf_event *comm_event, *mmap_event; |
defd8d38 | 337 | int err = -1, thread, j; |
9c90a61c | 338 | |
743eb868 | 339 | comm_event = malloc(sizeof(comm_event->comm) + machine->id_hdr_size); |
9c90a61c ACM |
340 | if (comm_event == NULL) |
341 | goto out; | |
342 | ||
743eb868 | 343 | mmap_event = malloc(sizeof(mmap_event->mmap) + machine->id_hdr_size); |
9c90a61c ACM |
344 | if (mmap_event == NULL) |
345 | goto out_free_comm; | |
346 | ||
401b8e13 ACM |
347 | err = 0; |
348 | for (thread = 0; thread < threads->nr; ++thread) { | |
349 | if (__event__synthesize_thread(comm_event, mmap_event, | |
defd8d38 | 350 | threads->map[thread], 0, |
62605dc5 ACM |
351 | process, tool, machine, |
352 | mmap_data)) { | |
401b8e13 ACM |
353 | err = -1; |
354 | break; | |
355 | } | |
defd8d38 DA |
356 | |
357 | /* | |
358 | * comm.pid is set to thread group id by | |
359 | * perf_event__synthesize_comm | |
360 | */ | |
361 | if ((int) comm_event->comm.pid != threads->map[thread]) { | |
362 | bool need_leader = true; | |
363 | ||
364 | /* is thread group leader in thread_map? */ | |
365 | for (j = 0; j < threads->nr; ++j) { | |
366 | if ((int) comm_event->comm.pid == threads->map[j]) { | |
367 | need_leader = false; | |
368 | break; | |
369 | } | |
370 | } | |
371 | ||
372 | /* if not, generate events for it */ | |
373 | if (need_leader && | |
62605dc5 ACM |
374 | __event__synthesize_thread(comm_event, mmap_event, |
375 | comm_event->comm.pid, 0, | |
376 | process, tool, machine, | |
377 | mmap_data)) { | |
defd8d38 DA |
378 | err = -1; |
379 | break; | |
380 | } | |
381 | } | |
401b8e13 | 382 | } |
9c90a61c ACM |
383 | free(mmap_event); |
384 | out_free_comm: | |
385 | free(comm_event); | |
386 | out: | |
387 | return err; | |
388 | } | |
389 | ||
45694aa7 | 390 | int perf_event__synthesize_threads(struct perf_tool *tool, |
d20deb64 | 391 | perf_event__handler_t process, |
62605dc5 | 392 | struct machine *machine, bool mmap_data) |
234fbbf5 ACM |
393 | { |
394 | DIR *proc; | |
99563465 | 395 | char proc_path[PATH_MAX]; |
234fbbf5 | 396 | struct dirent dirent, *next; |
8115d60c | 397 | union perf_event *comm_event, *mmap_event; |
9c90a61c ACM |
398 | int err = -1; |
399 | ||
743eb868 | 400 | comm_event = malloc(sizeof(comm_event->comm) + machine->id_hdr_size); |
9c90a61c ACM |
401 | if (comm_event == NULL) |
402 | goto out; | |
403 | ||
743eb868 | 404 | mmap_event = malloc(sizeof(mmap_event->mmap) + machine->id_hdr_size); |
9c90a61c ACM |
405 | if (mmap_event == NULL) |
406 | goto out_free_comm; | |
234fbbf5 | 407 | |
99563465 DY |
408 | snprintf(proc_path, sizeof(proc_path), "%s/proc", machine->root_dir); |
409 | proc = opendir(proc_path); | |
410 | ||
9c90a61c ACM |
411 | if (proc == NULL) |
412 | goto out_free_mmap; | |
234fbbf5 ACM |
413 | |
414 | while (!readdir_r(proc, &dirent, &next) && next) { | |
415 | char *end; | |
416 | pid_t pid = strtol(dirent.d_name, &end, 10); | |
417 | ||
418 | if (*end) /* only interested in proper numerical dirents */ | |
419 | continue; | |
ba361c92 ACM |
420 | /* |
421 | * We may race with exiting thread, so don't stop just because | |
422 | * one thread couldn't be synthesized. | |
423 | */ | |
424 | __event__synthesize_thread(comm_event, mmap_event, pid, 1, | |
62605dc5 | 425 | process, tool, machine, mmap_data); |
234fbbf5 ACM |
426 | } |
427 | ||
9c90a61c | 428 | err = 0; |
1e6d5322 | 429 | closedir(proc); |
9c90a61c ACM |
430 | out_free_mmap: |
431 | free(mmap_event); | |
432 | out_free_comm: | |
433 | free(comm_event); | |
434 | out: | |
435 | return err; | |
234fbbf5 | 436 | } |
62daacb5 | 437 | |
56b03f3c ACM |
438 | struct process_symbol_args { |
439 | const char *name; | |
440 | u64 start; | |
441 | }; | |
442 | ||
3b01a413 | 443 | static int find_symbol_cb(void *arg, const char *name, char type, |
82151520 | 444 | u64 start) |
56b03f3c ACM |
445 | { |
446 | struct process_symbol_args *args = arg; | |
447 | ||
881516eb ACM |
448 | /* |
449 | * Must be a function or at least an alias, as in PARISC64, where "_text" is | |
450 | * an 'A' to the same address as "_stext". | |
451 | */ | |
452 | if (!(symbol_type__is_a(type, MAP__FUNCTION) || | |
453 | type == 'A') || strcmp(name, args->name)) | |
56b03f3c ACM |
454 | return 0; |
455 | ||
456 | args->start = start; | |
457 | return 1; | |
458 | } | |
459 | ||
45694aa7 | 460 | int perf_event__synthesize_kernel_mmap(struct perf_tool *tool, |
d20deb64 | 461 | perf_event__handler_t process, |
8115d60c ACM |
462 | struct machine *machine, |
463 | const char *symbol_name) | |
56b03f3c ACM |
464 | { |
465 | size_t size; | |
a1645ce1 ZY |
466 | const char *filename, *mmap_name; |
467 | char path[PATH_MAX]; | |
468 | char name_buff[PATH_MAX]; | |
469 | struct map *map; | |
9c90a61c | 470 | int err; |
56b03f3c ACM |
471 | /* |
472 | * We should get this from /sys/kernel/sections/.text, but till that is | |
473 | * available use this, and after it is use this as a fallback for older | |
474 | * kernels. | |
475 | */ | |
476 | struct process_symbol_args args = { .name = symbol_name, }; | |
8115d60c | 477 | union perf_event *event = zalloc((sizeof(event->mmap) + |
743eb868 | 478 | machine->id_hdr_size)); |
9c90a61c ACM |
479 | if (event == NULL) { |
480 | pr_debug("Not enough memory synthesizing mmap event " | |
481 | "for kernel modules\n"); | |
482 | return -1; | |
483 | } | |
56b03f3c | 484 | |
48ea8f54 | 485 | mmap_name = machine__mmap_name(machine, name_buff, sizeof(name_buff)); |
23346f21 | 486 | if (machine__is_host(machine)) { |
a1645ce1 ZY |
487 | /* |
488 | * kernel uses PERF_RECORD_MISC_USER for user space maps, | |
489 | * see kernel/perf_event.c __perf_event_mmap | |
490 | */ | |
9c90a61c | 491 | event->header.misc = PERF_RECORD_MISC_KERNEL; |
a1645ce1 ZY |
492 | filename = "/proc/kallsyms"; |
493 | } else { | |
9c90a61c | 494 | event->header.misc = PERF_RECORD_MISC_GUEST_KERNEL; |
23346f21 | 495 | if (machine__is_default_guest(machine)) |
a1645ce1 ZY |
496 | filename = (char *) symbol_conf.default_guest_kallsyms; |
497 | else { | |
23346f21 | 498 | sprintf(path, "%s/proc/kallsyms", machine->root_dir); |
a1645ce1 ZY |
499 | filename = path; |
500 | } | |
501 | } | |
502 | ||
0b9e01a4 TJ |
503 | if (kallsyms__parse(filename, &args, find_symbol_cb) <= 0) { |
504 | free(event); | |
56b03f3c | 505 | return -ENOENT; |
0b9e01a4 | 506 | } |
56b03f3c | 507 | |
23346f21 | 508 | map = machine->vmlinux_maps[MAP__FUNCTION]; |
9c90a61c | 509 | size = snprintf(event->mmap.filename, sizeof(event->mmap.filename), |
a1645ce1 | 510 | "%s%s", mmap_name, symbol_name) + 1; |
9ac3e487 | 511 | size = PERF_ALIGN(size, sizeof(u64)); |
9c90a61c ACM |
512 | event->mmap.header.type = PERF_RECORD_MMAP; |
513 | event->mmap.header.size = (sizeof(event->mmap) - | |
743eb868 | 514 | (sizeof(event->mmap.filename) - size) + machine->id_hdr_size); |
9c90a61c ACM |
515 | event->mmap.pgoff = args.start; |
516 | event->mmap.start = map->start; | |
517 | event->mmap.len = map->end - event->mmap.start; | |
518 | event->mmap.pid = machine->pid; | |
519 | ||
45694aa7 | 520 | err = process(tool, event, &synth_sample, machine); |
9c90a61c ACM |
521 | free(event); |
522 | ||
523 | return err; | |
56b03f3c ACM |
524 | } |
525 | ||
482ad897 ACM |
526 | size_t perf_event__fprintf_comm(union perf_event *event, FILE *fp) |
527 | { | |
528 | return fprintf(fp, ": %s:%d\n", event->comm.comm, event->comm.tid); | |
529 | } | |
530 | ||
1d037ca1 | 531 | int perf_event__process_comm(struct perf_tool *tool __maybe_unused, |
d20deb64 | 532 | union perf_event *event, |
162f0bef | 533 | struct perf_sample *sample, |
743eb868 | 534 | struct machine *machine) |
62daacb5 | 535 | { |
162f0bef | 536 | return machine__process_comm_event(machine, event, sample); |
62daacb5 ACM |
537 | } |
538 | ||
1d037ca1 | 539 | int perf_event__process_lost(struct perf_tool *tool __maybe_unused, |
d20deb64 | 540 | union perf_event *event, |
162f0bef | 541 | struct perf_sample *sample, |
b0a7d1a0 | 542 | struct machine *machine) |
62daacb5 | 543 | { |
162f0bef | 544 | return machine__process_lost_event(machine, event, sample); |
a1645ce1 | 545 | } |
b7cece76 | 546 | |
482ad897 ACM |
547 | size_t perf_event__fprintf_mmap(union perf_event *event, FILE *fp) |
548 | { | |
62605dc5 | 549 | return fprintf(fp, " %d/%d: [%#" PRIx64 "(%#" PRIx64 ") @ %#" PRIx64 "]: %c %s\n", |
482ad897 | 550 | event->mmap.pid, event->mmap.tid, event->mmap.start, |
62605dc5 ACM |
551 | event->mmap.len, event->mmap.pgoff, |
552 | (event->header.misc & PERF_RECORD_MISC_MMAP_DATA) ? 'r' : 'x', | |
553 | event->mmap.filename); | |
482ad897 ACM |
554 | } |
555 | ||
5c5e854b SE |
556 | size_t perf_event__fprintf_mmap2(union perf_event *event, FILE *fp) |
557 | { | |
558 | return fprintf(fp, " %d/%d: [%#" PRIx64 "(%#" PRIx64 ") @ %#" PRIx64 | |
62605dc5 | 559 | " %02x:%02x %"PRIu64" %"PRIu64"]: %c %s\n", |
5c5e854b SE |
560 | event->mmap2.pid, event->mmap2.tid, event->mmap2.start, |
561 | event->mmap2.len, event->mmap2.pgoff, event->mmap2.maj, | |
562 | event->mmap2.min, event->mmap2.ino, | |
563 | event->mmap2.ino_generation, | |
62605dc5 | 564 | (event->header.misc & PERF_RECORD_MISC_MMAP_DATA) ? 'r' : 'x', |
5c5e854b SE |
565 | event->mmap2.filename); |
566 | } | |
567 | ||
b0a7d1a0 | 568 | int perf_event__process_mmap(struct perf_tool *tool __maybe_unused, |
d20deb64 | 569 | union perf_event *event, |
162f0bef | 570 | struct perf_sample *sample, |
743eb868 | 571 | struct machine *machine) |
a1645ce1 | 572 | { |
162f0bef | 573 | return machine__process_mmap_event(machine, event, sample); |
62daacb5 ACM |
574 | } |
575 | ||
5c5e854b SE |
576 | int perf_event__process_mmap2(struct perf_tool *tool __maybe_unused, |
577 | union perf_event *event, | |
162f0bef | 578 | struct perf_sample *sample, |
5c5e854b SE |
579 | struct machine *machine) |
580 | { | |
162f0bef | 581 | return machine__process_mmap2_event(machine, event, sample); |
5c5e854b SE |
582 | } |
583 | ||
482ad897 ACM |
584 | size_t perf_event__fprintf_task(union perf_event *event, FILE *fp) |
585 | { | |
586 | return fprintf(fp, "(%d:%d):(%d:%d)\n", | |
587 | event->fork.pid, event->fork.tid, | |
588 | event->fork.ppid, event->fork.ptid); | |
589 | } | |
590 | ||
f62d3f0f | 591 | int perf_event__process_fork(struct perf_tool *tool __maybe_unused, |
d20deb64 | 592 | union perf_event *event, |
162f0bef | 593 | struct perf_sample *sample, |
f62d3f0f | 594 | struct machine *machine) |
62daacb5 | 595 | { |
162f0bef | 596 | return machine__process_fork_event(machine, event, sample); |
62daacb5 | 597 | } |
1ed091c4 | 598 | |
f62d3f0f ACM |
599 | int perf_event__process_exit(struct perf_tool *tool __maybe_unused, |
600 | union perf_event *event, | |
162f0bef | 601 | struct perf_sample *sample, |
f62d3f0f ACM |
602 | struct machine *machine) |
603 | { | |
162f0bef | 604 | return machine__process_exit_event(machine, event, sample); |
f62d3f0f ACM |
605 | } |
606 | ||
482ad897 ACM |
607 | size_t perf_event__fprintf(union perf_event *event, FILE *fp) |
608 | { | |
609 | size_t ret = fprintf(fp, "PERF_RECORD_%s", | |
610 | perf_event__name(event->header.type)); | |
611 | ||
612 | switch (event->header.type) { | |
613 | case PERF_RECORD_COMM: | |
614 | ret += perf_event__fprintf_comm(event, fp); | |
615 | break; | |
616 | case PERF_RECORD_FORK: | |
617 | case PERF_RECORD_EXIT: | |
618 | ret += perf_event__fprintf_task(event, fp); | |
619 | break; | |
620 | case PERF_RECORD_MMAP: | |
621 | ret += perf_event__fprintf_mmap(event, fp); | |
622 | break; | |
5c5e854b SE |
623 | case PERF_RECORD_MMAP2: |
624 | ret += perf_event__fprintf_mmap2(event, fp); | |
625 | break; | |
482ad897 ACM |
626 | default: |
627 | ret += fprintf(fp, "\n"); | |
628 | } | |
629 | ||
630 | return ret; | |
631 | } | |
632 | ||
b0a7d1a0 ACM |
633 | int perf_event__process(struct perf_tool *tool __maybe_unused, |
634 | union perf_event *event, | |
162f0bef | 635 | struct perf_sample *sample, |
b0a7d1a0 | 636 | struct machine *machine) |
b83f920e | 637 | { |
162f0bef | 638 | return machine__process_event(machine, event, sample); |
b83f920e SD |
639 | } |
640 | ||
316c7136 | 641 | void thread__find_addr_map(struct thread *thread, |
743eb868 ACM |
642 | struct machine *machine, u8 cpumode, |
643 | enum map_type type, u64 addr, | |
326f59bf | 644 | struct addr_location *al) |
1ed091c4 | 645 | { |
316c7136 | 646 | struct map_groups *mg = &thread->mg; |
5b7ba82a | 647 | bool load_map = false; |
1ed091c4 | 648 | |
cc22e575 | 649 | al->machine = machine; |
316c7136 | 650 | al->thread = thread; |
1ed091c4 | 651 | al->addr = addr; |
a1645ce1 ZY |
652 | al->cpumode = cpumode; |
653 | al->filtered = false; | |
1ed091c4 | 654 | |
743eb868 ACM |
655 | if (machine == NULL) { |
656 | al->map = NULL; | |
657 | return; | |
658 | } | |
659 | ||
a1645ce1 | 660 | if (cpumode == PERF_RECORD_MISC_KERNEL && perf_host) { |
1ed091c4 | 661 | al->level = 'k'; |
23346f21 | 662 | mg = &machine->kmaps; |
5b7ba82a | 663 | load_map = true; |
a1645ce1 | 664 | } else if (cpumode == PERF_RECORD_MISC_USER && perf_host) { |
1ed091c4 | 665 | al->level = '.'; |
a1645ce1 ZY |
666 | } else if (cpumode == PERF_RECORD_MISC_GUEST_KERNEL && perf_guest) { |
667 | al->level = 'g'; | |
23346f21 | 668 | mg = &machine->kmaps; |
5b7ba82a | 669 | load_map = true; |
fb50bb43 DY |
670 | } else if (cpumode == PERF_RECORD_MISC_GUEST_USER && perf_guest) { |
671 | al->level = 'u'; | |
a1645ce1 | 672 | } else { |
fb50bb43 | 673 | al->level = 'H'; |
1ed091c4 | 674 | al->map = NULL; |
a1645ce1 ZY |
675 | |
676 | if ((cpumode == PERF_RECORD_MISC_GUEST_USER || | |
677 | cpumode == PERF_RECORD_MISC_GUEST_KERNEL) && | |
678 | !perf_guest) | |
679 | al->filtered = true; | |
680 | if ((cpumode == PERF_RECORD_MISC_USER || | |
681 | cpumode == PERF_RECORD_MISC_KERNEL) && | |
682 | !perf_host) | |
683 | al->filtered = true; | |
684 | ||
1ed091c4 ACM |
685 | return; |
686 | } | |
687 | try_again: | |
9958e1f0 | 688 | al->map = map_groups__find(mg, type, al->addr); |
1ed091c4 ACM |
689 | if (al->map == NULL) { |
690 | /* | |
691 | * If this is outside of all known maps, and is a negative | |
692 | * address, try to look it up in the kernel dso, as it might be | |
693 | * a vsyscall or vdso (which executes in user-mode). | |
694 | * | |
695 | * XXX This is nasty, we should have a symbol list in the | |
696 | * "[vdso]" dso, but for now lets use the old trick of looking | |
697 | * in the whole kernel symbol list. | |
698 | */ | |
a1645ce1 | 699 | if ((long long)al->addr < 0 && |
6c6804fb | 700 | cpumode == PERF_RECORD_MISC_USER && |
23346f21 ACM |
701 | machine && mg != &machine->kmaps) { |
702 | mg = &machine->kmaps; | |
1ed091c4 ACM |
703 | goto try_again; |
704 | } | |
5b7ba82a AH |
705 | } else { |
706 | /* | |
707 | * Kernel maps might be changed when loading symbols so loading | |
708 | * must be done prior to using kernel maps. | |
709 | */ | |
710 | if (load_map) | |
326f59bf | 711 | map__load(al->map, machine->symbol_filter); |
1ed091c4 | 712 | al->addr = al->map->map_ip(al->map, al->addr); |
5b7ba82a | 713 | } |
59ee68ec ACM |
714 | } |
715 | ||
743eb868 ACM |
716 | void thread__find_addr_location(struct thread *thread, struct machine *machine, |
717 | u8 cpumode, enum map_type type, u64 addr, | |
61710bde | 718 | struct addr_location *al) |
59ee68ec | 719 | { |
326f59bf | 720 | thread__find_addr_map(thread, machine, cpumode, type, addr, al); |
59ee68ec | 721 | if (al->map != NULL) |
61710bde AH |
722 | al->sym = map__find_symbol(al->map, al->addr, |
723 | machine->symbol_filter); | |
59ee68ec ACM |
724 | else |
725 | al->sym = NULL; | |
1ed091c4 ACM |
726 | } |
727 | ||
8115d60c | 728 | int perf_event__preprocess_sample(const union perf_event *event, |
743eb868 | 729 | struct machine *machine, |
8115d60c | 730 | struct addr_location *al, |
e44baa3e | 731 | struct perf_sample *sample) |
1ed091c4 | 732 | { |
8115d60c | 733 | u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; |
ef89325f AH |
734 | struct thread *thread = machine__findnew_thread(machine, sample->pid, |
735 | sample->pid); | |
41a37e20 | 736 | |
1ed091c4 ACM |
737 | if (thread == NULL) |
738 | return -1; | |
739 | ||
1f3878c1 | 740 | if (thread__is_filtered(thread)) |
c410a338 ACM |
741 | goto out_filtered; |
742 | ||
b9c5143a | 743 | dump_printf(" ... thread: %s:%d\n", thread__comm_str(thread), thread->tid); |
1f626bc3 | 744 | /* |
743eb868 | 745 | * Have we already created the kernel maps for this machine? |
1f626bc3 ACM |
746 | * |
747 | * This should have happened earlier, when we processed the kernel MMAP | |
748 | * events, but for older perf.data files there was no such thing, so do | |
749 | * it now. | |
750 | */ | |
751 | if (cpumode == PERF_RECORD_MISC_KERNEL && | |
743eb868 ACM |
752 | machine->vmlinux_maps[MAP__FUNCTION] == NULL) |
753 | machine__create_kernel_maps(machine); | |
1ed091c4 | 754 | |
743eb868 | 755 | thread__find_addr_map(thread, machine, cpumode, MAP__FUNCTION, |
ef89325f | 756 | sample->ip, al); |
1ed091c4 ACM |
757 | dump_printf(" ...... dso: %s\n", |
758 | al->map ? al->map->dso->long_name : | |
759 | al->level == 'H' ? "[hypervisor]" : "<not found>"); | |
96415e4d | 760 | al->sym = NULL; |
8d50e5b4 | 761 | al->cpu = sample->cpu; |
96415e4d ACM |
762 | |
763 | if (al->map) { | |
cb8f4e9a NK |
764 | struct dso *dso = al->map->dso; |
765 | ||
96415e4d | 766 | if (symbol_conf.dso_list && |
cb8f4e9a NK |
767 | (!dso || !(strlist__has_entry(symbol_conf.dso_list, |
768 | dso->short_name) || | |
769 | (dso->short_name != dso->long_name && | |
770 | strlist__has_entry(symbol_conf.dso_list, | |
771 | dso->long_name))))) | |
96415e4d | 772 | goto out_filtered; |
96415e4d | 773 | |
e44baa3e AH |
774 | al->sym = map__find_symbol(al->map, al->addr, |
775 | machine->symbol_filter); | |
96415e4d | 776 | } |
c410a338 | 777 | |
1500b93b FT |
778 | if (symbol_conf.sym_list && |
779 | (!al->sym || !strlist__has_entry(symbol_conf.sym_list, | |
780 | al->sym->name))) | |
c410a338 ACM |
781 | goto out_filtered; |
782 | ||
c410a338 ACM |
783 | return 0; |
784 | ||
785 | out_filtered: | |
786 | al->filtered = true; | |
1ed091c4 ACM |
787 | return 0; |
788 | } |