Commit | Line | Data |
---|---|---|
234fbbf5 ACM |
1 | #include <linux/types.h> |
2 | #include "event.h" | |
3 | #include "debug.h" | |
c410a338 | 4 | #include "sort.h" |
234fbbf5 | 5 | #include "string.h" |
c410a338 | 6 | #include "strlist.h" |
62daacb5 | 7 | #include "thread.h" |
7c940c18 | 8 | #include "thread_map.h" |
234fbbf5 | 9 | |
8115d60c | 10 | static const char *perf_event__names[] = { |
3cb6d154 FW |
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", | |
25 | [PERF_RECORD_FINISHED_ROUND] = "FINISHED_ROUND", | |
c8446b9b ACM |
26 | }; |
27 | ||
8115d60c | 28 | const char *perf_event__name(unsigned int id) |
3835bc00 | 29 | { |
8115d60c | 30 | if (id >= ARRAY_SIZE(perf_event__names)) |
3835bc00 | 31 | return "INVALID"; |
8115d60c | 32 | if (!perf_event__names[id]) |
3835bc00 | 33 | return "UNKNOWN"; |
8115d60c | 34 | return perf_event__names[id]; |
3835bc00 TG |
35 | } |
36 | ||
8d50e5b4 | 37 | static struct perf_sample synth_sample = { |
640c03ce ACM |
38 | .pid = -1, |
39 | .tid = -1, | |
40 | .time = -1, | |
41 | .stream_id = -1, | |
42 | .cpu = -1, | |
43 | .period = 1, | |
44 | }; | |
45 | ||
f5faf726 | 46 | static pid_t perf_event__get_comm_tgid(pid_t pid, char *comm, size_t len) |
234fbbf5 | 47 | { |
234fbbf5 ACM |
48 | char filename[PATH_MAX]; |
49 | char bf[BUFSIZ]; | |
50 | FILE *fp; | |
51 | size_t size = 0; | |
f5faf726 | 52 | pid_t tgid = -1; |
234fbbf5 ACM |
53 | |
54 | snprintf(filename, sizeof(filename), "/proc/%d/status", pid); | |
55 | ||
56 | fp = fopen(filename, "r"); | |
57 | if (fp == NULL) { | |
234fbbf5 ACM |
58 | pr_debug("couldn't open %s\n", filename); |
59 | return 0; | |
60 | } | |
61 | ||
f5faf726 | 62 | while (!comm[0] || (tgid < 0)) { |
9c90a61c | 63 | if (fgets(bf, sizeof(bf), fp) == NULL) { |
f5faf726 DA |
64 | pr_warning("couldn't get COMM and pgid, malformed %s\n", |
65 | filename); | |
66 | break; | |
9c90a61c | 67 | } |
234fbbf5 ACM |
68 | |
69 | if (memcmp(bf, "Name:", 5) == 0) { | |
70 | char *name = bf + 5; | |
71 | while (*name && isspace(*name)) | |
72 | ++name; | |
73 | size = strlen(name) - 1; | |
f5faf726 DA |
74 | if (size >= len) |
75 | size = len - 1; | |
76 | memcpy(comm, name, size); | |
cfbd70c1 | 77 | comm[size] = '\0'; |
f5faf726 | 78 | |
234fbbf5 ACM |
79 | } else if (memcmp(bf, "Tgid:", 5) == 0) { |
80 | char *tgids = bf + 5; | |
81 | while (*tgids && isspace(*tgids)) | |
82 | ++tgids; | |
f5faf726 | 83 | tgid = atoi(tgids); |
234fbbf5 ACM |
84 | } |
85 | } | |
86 | ||
f5faf726 DA |
87 | fclose(fp); |
88 | ||
89 | return tgid; | |
90 | } | |
91 | ||
92 | static pid_t perf_event__synthesize_comm(struct perf_tool *tool, | |
93 | union perf_event *event, pid_t pid, | |
94 | int full, | |
95 | perf_event__handler_t process, | |
96 | struct machine *machine) | |
97 | { | |
98 | char filename[PATH_MAX]; | |
99 | size_t size; | |
100 | DIR *tasks; | |
101 | struct dirent dirent, *next; | |
102 | pid_t tgid; | |
103 | ||
104 | memset(&event->comm, 0, sizeof(event->comm)); | |
105 | ||
106 | tgid = perf_event__get_comm_tgid(pid, event->comm.comm, | |
107 | sizeof(event->comm.comm)); | |
108 | if (tgid < 0) | |
109 | goto out; | |
110 | ||
111 | event->comm.pid = tgid; | |
9c90a61c | 112 | event->comm.header.type = PERF_RECORD_COMM; |
f5faf726 DA |
113 | |
114 | size = strlen(event->comm.comm) + 1; | |
234fbbf5 | 115 | size = ALIGN(size, sizeof(u64)); |
743eb868 | 116 | memset(event->comm.comm + size, 0, machine->id_hdr_size); |
9c90a61c ACM |
117 | event->comm.header.size = (sizeof(event->comm) - |
118 | (sizeof(event->comm.comm) - size) + | |
743eb868 | 119 | machine->id_hdr_size); |
234fbbf5 | 120 | if (!full) { |
9c90a61c | 121 | event->comm.tid = pid; |
234fbbf5 | 122 | |
45694aa7 | 123 | process(tool, event, &synth_sample, machine); |
9c90a61c | 124 | goto out; |
234fbbf5 ACM |
125 | } |
126 | ||
127 | snprintf(filename, sizeof(filename), "/proc/%d/task", pid); | |
128 | ||
129 | tasks = opendir(filename); | |
f5faf726 DA |
130 | if (tasks == NULL) { |
131 | pr_debug("couldn't open %s\n", filename); | |
132 | return 0; | |
133 | } | |
234fbbf5 ACM |
134 | |
135 | while (!readdir_r(tasks, &dirent, &next) && next) { | |
136 | char *end; | |
137 | pid = strtol(dirent.d_name, &end, 10); | |
138 | if (*end) | |
139 | continue; | |
140 | ||
f5faf726 DA |
141 | /* already have tgid; jut want to update the comm */ |
142 | (void) perf_event__get_comm_tgid(pid, event->comm.comm, | |
143 | sizeof(event->comm.comm)); | |
144 | ||
145 | size = strlen(event->comm.comm) + 1; | |
146 | size = ALIGN(size, sizeof(u64)); | |
147 | memset(event->comm.comm + size, 0, machine->id_hdr_size); | |
148 | event->comm.header.size = (sizeof(event->comm) - | |
149 | (sizeof(event->comm.comm) - size) + | |
150 | machine->id_hdr_size); | |
151 | ||
9c90a61c | 152 | event->comm.tid = pid; |
234fbbf5 | 153 | |
45694aa7 | 154 | process(tool, event, &synth_sample, machine); |
234fbbf5 | 155 | } |
234fbbf5 | 156 | |
9c90a61c ACM |
157 | closedir(tasks); |
158 | out: | |
9c90a61c | 159 | return tgid; |
234fbbf5 ACM |
160 | } |
161 | ||
45694aa7 | 162 | static int perf_event__synthesize_mmap_events(struct perf_tool *tool, |
d20deb64 | 163 | union perf_event *event, |
8115d60c ACM |
164 | pid_t pid, pid_t tgid, |
165 | perf_event__handler_t process, | |
743eb868 | 166 | struct machine *machine) |
234fbbf5 ACM |
167 | { |
168 | char filename[PATH_MAX]; | |
169 | FILE *fp; | |
170 | ||
171 | snprintf(filename, sizeof(filename), "/proc/%d/maps", pid); | |
172 | ||
173 | fp = fopen(filename, "r"); | |
174 | if (fp == NULL) { | |
175 | /* | |
176 | * We raced with a task exiting - just return: | |
177 | */ | |
178 | pr_debug("couldn't open %s\n", filename); | |
179 | return -1; | |
180 | } | |
181 | ||
9c90a61c ACM |
182 | event->header.type = PERF_RECORD_MMAP; |
183 | /* | |
184 | * Just like the kernel, see __perf_event_mmap in kernel/perf_event.c | |
185 | */ | |
186 | event->header.misc = PERF_RECORD_MISC_USER; | |
187 | ||
234fbbf5 ACM |
188 | while (1) { |
189 | char bf[BUFSIZ], *pbf = bf; | |
234fbbf5 ACM |
190 | int n; |
191 | size_t size; | |
192 | if (fgets(bf, sizeof(bf), fp) == NULL) | |
193 | break; | |
194 | ||
195 | /* 00400000-0040c000 r-xp 00000000 fd:01 41038 /bin/cat */ | |
9c90a61c | 196 | n = hex2u64(pbf, &event->mmap.start); |
234fbbf5 ACM |
197 | if (n < 0) |
198 | continue; | |
199 | pbf += n + 1; | |
9c90a61c | 200 | n = hex2u64(pbf, &event->mmap.len); |
234fbbf5 ACM |
201 | if (n < 0) |
202 | continue; | |
203 | pbf += n + 3; | |
204 | if (*pbf == 'x') { /* vm_exec */ | |
6a0e55d8 | 205 | char anonstr[] = "//anon\n"; |
234fbbf5 ACM |
206 | char *execname = strchr(bf, '/'); |
207 | ||
208 | /* Catch VDSO */ | |
209 | if (execname == NULL) | |
210 | execname = strstr(bf, "[vdso]"); | |
211 | ||
6a0e55d8 AB |
212 | /* Catch anonymous mmaps */ |
213 | if ((execname == NULL) && !strstr(bf, "[")) | |
214 | execname = anonstr; | |
215 | ||
234fbbf5 ACM |
216 | if (execname == NULL) |
217 | continue; | |
218 | ||
4af8b35d | 219 | pbf += 3; |
9c90a61c | 220 | n = hex2u64(pbf, &event->mmap.pgoff); |
4af8b35d | 221 | |
234fbbf5 ACM |
222 | size = strlen(execname); |
223 | execname[size - 1] = '\0'; /* Remove \n */ | |
9c90a61c | 224 | memcpy(event->mmap.filename, execname, size); |
234fbbf5 | 225 | size = ALIGN(size, sizeof(u64)); |
9c90a61c ACM |
226 | event->mmap.len -= event->mmap.start; |
227 | event->mmap.header.size = (sizeof(event->mmap) - | |
228 | (sizeof(event->mmap.filename) - size)); | |
743eb868 ACM |
229 | memset(event->mmap.filename + size, 0, machine->id_hdr_size); |
230 | event->mmap.header.size += machine->id_hdr_size; | |
9c90a61c ACM |
231 | event->mmap.pid = tgid; |
232 | event->mmap.tid = pid; | |
233 | ||
45694aa7 | 234 | process(tool, event, &synth_sample, machine); |
234fbbf5 ACM |
235 | } |
236 | } | |
237 | ||
238 | fclose(fp); | |
239 | return 0; | |
240 | } | |
241 | ||
45694aa7 | 242 | int perf_event__synthesize_modules(struct perf_tool *tool, |
d20deb64 | 243 | perf_event__handler_t process, |
8115d60c | 244 | struct machine *machine) |
b7cece76 ACM |
245 | { |
246 | struct rb_node *nd; | |
23346f21 | 247 | struct map_groups *kmaps = &machine->kmaps; |
8115d60c | 248 | union perf_event *event = zalloc((sizeof(event->mmap) + |
743eb868 | 249 | machine->id_hdr_size)); |
9c90a61c ACM |
250 | if (event == NULL) { |
251 | pr_debug("Not enough memory synthesizing mmap event " | |
252 | "for kernel modules\n"); | |
253 | return -1; | |
254 | } | |
255 | ||
256 | event->header.type = PERF_RECORD_MMAP; | |
b7cece76 | 257 | |
a1645ce1 ZY |
258 | /* |
259 | * kernel uses 0 for user space maps, see kernel/perf_event.c | |
260 | * __perf_event_mmap | |
261 | */ | |
23346f21 | 262 | if (machine__is_host(machine)) |
9c90a61c | 263 | event->header.misc = PERF_RECORD_MISC_KERNEL; |
a1645ce1 | 264 | else |
9c90a61c | 265 | event->header.misc = PERF_RECORD_MISC_GUEST_KERNEL; |
a1645ce1 ZY |
266 | |
267 | for (nd = rb_first(&kmaps->maps[MAP__FUNCTION]); | |
b7cece76 | 268 | nd; nd = rb_next(nd)) { |
b7cece76 ACM |
269 | size_t size; |
270 | struct map *pos = rb_entry(nd, struct map, rb_node); | |
271 | ||
272 | if (pos->dso->kernel) | |
273 | continue; | |
274 | ||
275 | size = ALIGN(pos->dso->long_name_len + 1, sizeof(u64)); | |
9c90a61c ACM |
276 | event->mmap.header.type = PERF_RECORD_MMAP; |
277 | event->mmap.header.size = (sizeof(event->mmap) - | |
278 | (sizeof(event->mmap.filename) - size)); | |
743eb868 ACM |
279 | memset(event->mmap.filename + size, 0, machine->id_hdr_size); |
280 | event->mmap.header.size += machine->id_hdr_size; | |
9c90a61c ACM |
281 | event->mmap.start = pos->start; |
282 | event->mmap.len = pos->end - pos->start; | |
283 | event->mmap.pid = machine->pid; | |
284 | ||
285 | memcpy(event->mmap.filename, pos->dso->long_name, | |
b7cece76 | 286 | pos->dso->long_name_len + 1); |
45694aa7 | 287 | process(tool, event, &synth_sample, machine); |
b7cece76 ACM |
288 | } |
289 | ||
9c90a61c | 290 | free(event); |
b7cece76 ACM |
291 | return 0; |
292 | } | |
293 | ||
8115d60c ACM |
294 | static int __event__synthesize_thread(union perf_event *comm_event, |
295 | union perf_event *mmap_event, | |
defd8d38 DA |
296 | pid_t pid, int full, |
297 | perf_event__handler_t process, | |
45694aa7 | 298 | struct perf_tool *tool, |
743eb868 | 299 | struct machine *machine) |
234fbbf5 | 300 | { |
defd8d38 | 301 | pid_t tgid = perf_event__synthesize_comm(tool, comm_event, pid, full, |
743eb868 | 302 | process, machine); |
234fbbf5 ACM |
303 | if (tgid == -1) |
304 | return -1; | |
45694aa7 | 305 | return perf_event__synthesize_mmap_events(tool, mmap_event, pid, tgid, |
743eb868 | 306 | process, machine); |
234fbbf5 ACM |
307 | } |
308 | ||
45694aa7 | 309 | int perf_event__synthesize_thread_map(struct perf_tool *tool, |
d20deb64 | 310 | struct thread_map *threads, |
7c940c18 | 311 | perf_event__handler_t process, |
743eb868 | 312 | struct machine *machine) |
9c90a61c | 313 | { |
8115d60c | 314 | union perf_event *comm_event, *mmap_event; |
defd8d38 | 315 | int err = -1, thread, j; |
9c90a61c | 316 | |
743eb868 | 317 | comm_event = malloc(sizeof(comm_event->comm) + machine->id_hdr_size); |
9c90a61c ACM |
318 | if (comm_event == NULL) |
319 | goto out; | |
320 | ||
743eb868 | 321 | mmap_event = malloc(sizeof(mmap_event->mmap) + machine->id_hdr_size); |
9c90a61c ACM |
322 | if (mmap_event == NULL) |
323 | goto out_free_comm; | |
324 | ||
401b8e13 ACM |
325 | err = 0; |
326 | for (thread = 0; thread < threads->nr; ++thread) { | |
327 | if (__event__synthesize_thread(comm_event, mmap_event, | |
defd8d38 | 328 | threads->map[thread], 0, |
45694aa7 | 329 | process, tool, machine)) { |
401b8e13 ACM |
330 | err = -1; |
331 | break; | |
332 | } | |
defd8d38 DA |
333 | |
334 | /* | |
335 | * comm.pid is set to thread group id by | |
336 | * perf_event__synthesize_comm | |
337 | */ | |
338 | if ((int) comm_event->comm.pid != threads->map[thread]) { | |
339 | bool need_leader = true; | |
340 | ||
341 | /* is thread group leader in thread_map? */ | |
342 | for (j = 0; j < threads->nr; ++j) { | |
343 | if ((int) comm_event->comm.pid == threads->map[j]) { | |
344 | need_leader = false; | |
345 | break; | |
346 | } | |
347 | } | |
348 | ||
349 | /* if not, generate events for it */ | |
350 | if (need_leader && | |
351 | __event__synthesize_thread(comm_event, | |
352 | mmap_event, | |
353 | comm_event->comm.pid, 0, | |
354 | process, tool, machine)) { | |
355 | err = -1; | |
356 | break; | |
357 | } | |
358 | } | |
401b8e13 | 359 | } |
9c90a61c ACM |
360 | free(mmap_event); |
361 | out_free_comm: | |
362 | free(comm_event); | |
363 | out: | |
364 | return err; | |
365 | } | |
366 | ||
45694aa7 | 367 | int perf_event__synthesize_threads(struct perf_tool *tool, |
d20deb64 | 368 | perf_event__handler_t process, |
743eb868 | 369 | struct machine *machine) |
234fbbf5 ACM |
370 | { |
371 | DIR *proc; | |
372 | struct dirent dirent, *next; | |
8115d60c | 373 | union perf_event *comm_event, *mmap_event; |
9c90a61c ACM |
374 | int err = -1; |
375 | ||
743eb868 | 376 | comm_event = malloc(sizeof(comm_event->comm) + machine->id_hdr_size); |
9c90a61c ACM |
377 | if (comm_event == NULL) |
378 | goto out; | |
379 | ||
743eb868 | 380 | mmap_event = malloc(sizeof(mmap_event->mmap) + machine->id_hdr_size); |
9c90a61c ACM |
381 | if (mmap_event == NULL) |
382 | goto out_free_comm; | |
234fbbf5 ACM |
383 | |
384 | proc = opendir("/proc"); | |
9c90a61c ACM |
385 | if (proc == NULL) |
386 | goto out_free_mmap; | |
234fbbf5 ACM |
387 | |
388 | while (!readdir_r(proc, &dirent, &next) && next) { | |
389 | char *end; | |
390 | pid_t pid = strtol(dirent.d_name, &end, 10); | |
391 | ||
392 | if (*end) /* only interested in proper numerical dirents */ | |
393 | continue; | |
394 | ||
defd8d38 | 395 | __event__synthesize_thread(comm_event, mmap_event, pid, 1, |
45694aa7 | 396 | process, tool, machine); |
234fbbf5 ACM |
397 | } |
398 | ||
399 | closedir(proc); | |
9c90a61c ACM |
400 | err = 0; |
401 | out_free_mmap: | |
402 | free(mmap_event); | |
403 | out_free_comm: | |
404 | free(comm_event); | |
405 | out: | |
406 | return err; | |
234fbbf5 | 407 | } |
62daacb5 | 408 | |
56b03f3c ACM |
409 | struct process_symbol_args { |
410 | const char *name; | |
411 | u64 start; | |
412 | }; | |
413 | ||
3b01a413 ACM |
414 | static int find_symbol_cb(void *arg, const char *name, char type, |
415 | u64 start, u64 end __used) | |
56b03f3c ACM |
416 | { |
417 | struct process_symbol_args *args = arg; | |
418 | ||
881516eb ACM |
419 | /* |
420 | * Must be a function or at least an alias, as in PARISC64, where "_text" is | |
421 | * an 'A' to the same address as "_stext". | |
422 | */ | |
423 | if (!(symbol_type__is_a(type, MAP__FUNCTION) || | |
424 | type == 'A') || strcmp(name, args->name)) | |
56b03f3c ACM |
425 | return 0; |
426 | ||
427 | args->start = start; | |
428 | return 1; | |
429 | } | |
430 | ||
45694aa7 | 431 | int perf_event__synthesize_kernel_mmap(struct perf_tool *tool, |
d20deb64 | 432 | perf_event__handler_t process, |
8115d60c ACM |
433 | struct machine *machine, |
434 | const char *symbol_name) | |
56b03f3c ACM |
435 | { |
436 | size_t size; | |
a1645ce1 ZY |
437 | const char *filename, *mmap_name; |
438 | char path[PATH_MAX]; | |
439 | char name_buff[PATH_MAX]; | |
440 | struct map *map; | |
9c90a61c | 441 | int err; |
56b03f3c ACM |
442 | /* |
443 | * We should get this from /sys/kernel/sections/.text, but till that is | |
444 | * available use this, and after it is use this as a fallback for older | |
445 | * kernels. | |
446 | */ | |
447 | struct process_symbol_args args = { .name = symbol_name, }; | |
8115d60c | 448 | union perf_event *event = zalloc((sizeof(event->mmap) + |
743eb868 | 449 | machine->id_hdr_size)); |
9c90a61c ACM |
450 | if (event == NULL) { |
451 | pr_debug("Not enough memory synthesizing mmap event " | |
452 | "for kernel modules\n"); | |
453 | return -1; | |
454 | } | |
56b03f3c | 455 | |
48ea8f54 | 456 | mmap_name = machine__mmap_name(machine, name_buff, sizeof(name_buff)); |
23346f21 | 457 | if (machine__is_host(machine)) { |
a1645ce1 ZY |
458 | /* |
459 | * kernel uses PERF_RECORD_MISC_USER for user space maps, | |
460 | * see kernel/perf_event.c __perf_event_mmap | |
461 | */ | |
9c90a61c | 462 | event->header.misc = PERF_RECORD_MISC_KERNEL; |
a1645ce1 ZY |
463 | filename = "/proc/kallsyms"; |
464 | } else { | |
9c90a61c | 465 | event->header.misc = PERF_RECORD_MISC_GUEST_KERNEL; |
23346f21 | 466 | if (machine__is_default_guest(machine)) |
a1645ce1 ZY |
467 | filename = (char *) symbol_conf.default_guest_kallsyms; |
468 | else { | |
23346f21 | 469 | sprintf(path, "%s/proc/kallsyms", machine->root_dir); |
a1645ce1 ZY |
470 | filename = path; |
471 | } | |
472 | } | |
473 | ||
474 | if (kallsyms__parse(filename, &args, find_symbol_cb) <= 0) | |
56b03f3c ACM |
475 | return -ENOENT; |
476 | ||
23346f21 | 477 | map = machine->vmlinux_maps[MAP__FUNCTION]; |
9c90a61c | 478 | size = snprintf(event->mmap.filename, sizeof(event->mmap.filename), |
a1645ce1 | 479 | "%s%s", mmap_name, symbol_name) + 1; |
56b03f3c | 480 | size = ALIGN(size, sizeof(u64)); |
9c90a61c ACM |
481 | event->mmap.header.type = PERF_RECORD_MMAP; |
482 | event->mmap.header.size = (sizeof(event->mmap) - | |
743eb868 | 483 | (sizeof(event->mmap.filename) - size) + machine->id_hdr_size); |
9c90a61c ACM |
484 | event->mmap.pgoff = args.start; |
485 | event->mmap.start = map->start; | |
486 | event->mmap.len = map->end - event->mmap.start; | |
487 | event->mmap.pid = machine->pid; | |
488 | ||
45694aa7 | 489 | err = process(tool, event, &synth_sample, machine); |
9c90a61c ACM |
490 | free(event); |
491 | ||
492 | return err; | |
56b03f3c ACM |
493 | } |
494 | ||
482ad897 ACM |
495 | size_t perf_event__fprintf_comm(union perf_event *event, FILE *fp) |
496 | { | |
497 | return fprintf(fp, ": %s:%d\n", event->comm.comm, event->comm.tid); | |
498 | } | |
499 | ||
45694aa7 | 500 | int perf_event__process_comm(struct perf_tool *tool __used, |
d20deb64 | 501 | union perf_event *event, |
8115d60c | 502 | struct perf_sample *sample __used, |
743eb868 | 503 | struct machine *machine) |
62daacb5 | 504 | { |
743eb868 | 505 | struct thread *thread = machine__findnew_thread(machine, event->comm.tid); |
62daacb5 | 506 | |
482ad897 ACM |
507 | if (dump_trace) |
508 | perf_event__fprintf_comm(event, stdout); | |
62daacb5 | 509 | |
d7603d51 | 510 | if (thread == NULL || thread__set_comm(thread, event->comm.comm)) { |
62daacb5 ACM |
511 | dump_printf("problem processing PERF_RECORD_COMM, skipping event.\n"); |
512 | return -1; | |
513 | } | |
514 | ||
515 | return 0; | |
516 | } | |
517 | ||
45694aa7 | 518 | int perf_event__process_lost(struct perf_tool *tool __used, |
d20deb64 | 519 | union perf_event *event, |
8115d60c | 520 | struct perf_sample *sample __used, |
743eb868 | 521 | struct machine *machine __used) |
62daacb5 | 522 | { |
9486aa38 | 523 | dump_printf(": id:%" PRIu64 ": lost:%" PRIu64 "\n", |
8115d60c | 524 | event->lost.id, event->lost.lost); |
62daacb5 ACM |
525 | return 0; |
526 | } | |
527 | ||
8115d60c ACM |
528 | static void perf_event__set_kernel_mmap_len(union perf_event *event, |
529 | struct map **maps) | |
a1645ce1 | 530 | { |
8115d60c ACM |
531 | maps[MAP__FUNCTION]->start = event->mmap.start; |
532 | maps[MAP__FUNCTION]->end = event->mmap.start + event->mmap.len; | |
a1645ce1 ZY |
533 | /* |
534 | * Be a bit paranoid here, some perf.data file came with | |
535 | * a zero sized synthesized MMAP event for the kernel. | |
536 | */ | |
537 | if (maps[MAP__FUNCTION]->end == 0) | |
9d1faba5 | 538 | maps[MAP__FUNCTION]->end = ~0ULL; |
a1645ce1 ZY |
539 | } |
540 | ||
45694aa7 | 541 | static int perf_event__process_kernel_mmap(struct perf_tool *tool __used, |
d20deb64 | 542 | union perf_event *event, |
743eb868 | 543 | struct machine *machine) |
62daacb5 | 544 | { |
56b03f3c | 545 | struct map *map; |
a1645ce1 | 546 | char kmmap_prefix[PATH_MAX]; |
a1645ce1 ZY |
547 | enum dso_kernel_type kernel_type; |
548 | bool is_kernel_mmap; | |
549 | ||
48ea8f54 | 550 | machine__mmap_name(machine, kmmap_prefix, sizeof(kmmap_prefix)); |
23346f21 | 551 | if (machine__is_host(machine)) |
a1645ce1 ZY |
552 | kernel_type = DSO_TYPE_KERNEL; |
553 | else | |
554 | kernel_type = DSO_TYPE_GUEST_KERNEL; | |
62daacb5 | 555 | |
8115d60c | 556 | is_kernel_mmap = memcmp(event->mmap.filename, |
a1645ce1 | 557 | kmmap_prefix, |
bf32c9eb | 558 | strlen(kmmap_prefix) - 1) == 0; |
8115d60c ACM |
559 | if (event->mmap.filename[0] == '/' || |
560 | (!is_kernel_mmap && event->mmap.filename[0] == '[')) { | |
b7cece76 | 561 | |
a1645ce1 ZY |
562 | char short_module_name[1024]; |
563 | char *name, *dot; | |
b7cece76 | 564 | |
8115d60c ACM |
565 | if (event->mmap.filename[0] == '/') { |
566 | name = strrchr(event->mmap.filename, '/'); | |
b7cece76 ACM |
567 | if (name == NULL) |
568 | goto out_problem; | |
569 | ||
570 | ++name; /* skip / */ | |
571 | dot = strrchr(name, '.'); | |
572 | if (dot == NULL) | |
573 | goto out_problem; | |
b7cece76 | 574 | snprintf(short_module_name, sizeof(short_module_name), |
a1645ce1 | 575 | "[%.*s]", (int)(dot - name), name); |
b7cece76 | 576 | strxfrchar(short_module_name, '-', '_'); |
a1645ce1 | 577 | } else |
8115d60c | 578 | strcpy(short_module_name, event->mmap.filename); |
a1645ce1 | 579 | |
8115d60c ACM |
580 | map = machine__new_module(machine, event->mmap.start, |
581 | event->mmap.filename); | |
a1645ce1 ZY |
582 | if (map == NULL) |
583 | goto out_problem; | |
584 | ||
585 | name = strdup(short_module_name); | |
586 | if (name == NULL) | |
587 | goto out_problem; | |
588 | ||
589 | map->dso->short_name = name; | |
6e406257 | 590 | map->dso->sname_alloc = 1; |
8115d60c | 591 | map->end = map->start + event->mmap.len; |
a1645ce1 | 592 | } else if (is_kernel_mmap) { |
8115d60c | 593 | const char *symbol_name = (event->mmap.filename + |
a1645ce1 ZY |
594 | strlen(kmmap_prefix)); |
595 | /* | |
596 | * Should be there already, from the build-id table in | |
597 | * the header. | |
598 | */ | |
23346f21 ACM |
599 | struct dso *kernel = __dsos__findnew(&machine->kernel_dsos, |
600 | kmmap_prefix); | |
a1645ce1 ZY |
601 | if (kernel == NULL) |
602 | goto out_problem; | |
603 | ||
604 | kernel->kernel = kernel_type; | |
d28c6223 | 605 | if (__machine__create_kernel_maps(machine, kernel) < 0) |
a1645ce1 ZY |
606 | goto out_problem; |
607 | ||
8115d60c | 608 | perf_event__set_kernel_mmap_len(event, machine->vmlinux_maps); |
ec80fde7 ACM |
609 | |
610 | /* | |
611 | * Avoid using a zero address (kptr_restrict) for the ref reloc | |
612 | * symbol. Effectively having zero here means that at record | |
613 | * time /proc/sys/kernel/kptr_restrict was non zero. | |
614 | */ | |
615 | if (event->mmap.pgoff != 0) { | |
743eb868 ACM |
616 | maps__set_kallsyms_ref_reloc_sym(machine->vmlinux_maps, |
617 | symbol_name, | |
618 | event->mmap.pgoff); | |
ec80fde7 ACM |
619 | } |
620 | ||
23346f21 | 621 | if (machine__is_default_guest(machine)) { |
b7cece76 | 622 | /* |
a1645ce1 | 623 | * preload dso of guest kernel and modules |
b7cece76 | 624 | */ |
23346f21 ACM |
625 | dso__load(kernel, machine->vmlinux_maps[MAP__FUNCTION], |
626 | NULL); | |
a1645ce1 ZY |
627 | } |
628 | } | |
629 | return 0; | |
630 | out_problem: | |
631 | return -1; | |
632 | } | |
b7cece76 | 633 | |
482ad897 ACM |
634 | size_t perf_event__fprintf_mmap(union perf_event *event, FILE *fp) |
635 | { | |
636 | return fprintf(fp, " %d/%d: [%#" PRIx64 "(%#" PRIx64 ") @ %#" PRIx64 "]: %s\n", | |
637 | event->mmap.pid, event->mmap.tid, event->mmap.start, | |
638 | event->mmap.len, event->mmap.pgoff, event->mmap.filename); | |
639 | } | |
640 | ||
45694aa7 | 641 | int perf_event__process_mmap(struct perf_tool *tool, |
d20deb64 | 642 | union perf_event *event, |
8115d60c | 643 | struct perf_sample *sample __used, |
743eb868 | 644 | struct machine *machine) |
a1645ce1 | 645 | { |
a1645ce1 ZY |
646 | struct thread *thread; |
647 | struct map *map; | |
8115d60c | 648 | u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; |
a1645ce1 | 649 | int ret = 0; |
b7cece76 | 650 | |
482ad897 ACM |
651 | if (dump_trace) |
652 | perf_event__fprintf_mmap(event, stdout); | |
a1645ce1 ZY |
653 | |
654 | if (cpumode == PERF_RECORD_MISC_GUEST_KERNEL || | |
655 | cpumode == PERF_RECORD_MISC_KERNEL) { | |
45694aa7 | 656 | ret = perf_event__process_kernel_mmap(tool, event, machine); |
a1645ce1 ZY |
657 | if (ret < 0) |
658 | goto out_problem; | |
56b03f3c ACM |
659 | return 0; |
660 | } | |
661 | ||
743eb868 | 662 | thread = machine__findnew_thread(machine, event->mmap.pid); |
d65a458b ACM |
663 | if (thread == NULL) |
664 | goto out_problem; | |
8115d60c ACM |
665 | map = map__new(&machine->user_dsos, event->mmap.start, |
666 | event->mmap.len, event->mmap.pgoff, | |
667 | event->mmap.pid, event->mmap.filename, | |
361d1346 | 668 | MAP__FUNCTION); |
d65a458b | 669 | if (map == NULL) |
b7cece76 ACM |
670 | goto out_problem; |
671 | ||
672 | thread__insert_map(thread, map); | |
673 | return 0; | |
62daacb5 | 674 | |
b7cece76 ACM |
675 | out_problem: |
676 | dump_printf("problem processing PERF_RECORD_MMAP, skipping event.\n"); | |
62daacb5 ACM |
677 | return 0; |
678 | } | |
679 | ||
482ad897 ACM |
680 | size_t perf_event__fprintf_task(union perf_event *event, FILE *fp) |
681 | { | |
682 | return fprintf(fp, "(%d:%d):(%d:%d)\n", | |
683 | event->fork.pid, event->fork.tid, | |
684 | event->fork.ppid, event->fork.ptid); | |
685 | } | |
686 | ||
45694aa7 | 687 | int perf_event__process_task(struct perf_tool *tool __used, |
d20deb64 | 688 | union perf_event *event, |
8115d60c | 689 | struct perf_sample *sample __used, |
743eb868 | 690 | struct machine *machine) |
62daacb5 | 691 | { |
743eb868 ACM |
692 | struct thread *thread = machine__findnew_thread(machine, event->fork.tid); |
693 | struct thread *parent = machine__findnew_thread(machine, event->fork.ptid); | |
62daacb5 | 694 | |
482ad897 ACM |
695 | if (dump_trace) |
696 | perf_event__fprintf_task(event, stdout); | |
62daacb5 | 697 | |
8115d60c | 698 | if (event->header.type == PERF_RECORD_EXIT) { |
743eb868 | 699 | machine__remove_thread(machine, thread); |
62daacb5 | 700 | return 0; |
720a3aeb | 701 | } |
62daacb5 ACM |
702 | |
703 | if (thread == NULL || parent == NULL || | |
704 | thread__fork(thread, parent) < 0) { | |
705 | dump_printf("problem processing PERF_RECORD_FORK, skipping event.\n"); | |
706 | return -1; | |
707 | } | |
708 | ||
709 | return 0; | |
710 | } | |
1ed091c4 | 711 | |
482ad897 ACM |
712 | size_t perf_event__fprintf(union perf_event *event, FILE *fp) |
713 | { | |
714 | size_t ret = fprintf(fp, "PERF_RECORD_%s", | |
715 | perf_event__name(event->header.type)); | |
716 | ||
717 | switch (event->header.type) { | |
718 | case PERF_RECORD_COMM: | |
719 | ret += perf_event__fprintf_comm(event, fp); | |
720 | break; | |
721 | case PERF_RECORD_FORK: | |
722 | case PERF_RECORD_EXIT: | |
723 | ret += perf_event__fprintf_task(event, fp); | |
724 | break; | |
725 | case PERF_RECORD_MMAP: | |
726 | ret += perf_event__fprintf_mmap(event, fp); | |
727 | break; | |
728 | default: | |
729 | ret += fprintf(fp, "\n"); | |
730 | } | |
731 | ||
732 | return ret; | |
733 | } | |
734 | ||
45694aa7 | 735 | int perf_event__process(struct perf_tool *tool, union perf_event *event, |
743eb868 | 736 | struct perf_sample *sample, struct machine *machine) |
b83f920e SD |
737 | { |
738 | switch (event->header.type) { | |
739 | case PERF_RECORD_COMM: | |
45694aa7 | 740 | perf_event__process_comm(tool, event, sample, machine); |
b83f920e SD |
741 | break; |
742 | case PERF_RECORD_MMAP: | |
45694aa7 | 743 | perf_event__process_mmap(tool, event, sample, machine); |
b83f920e SD |
744 | break; |
745 | case PERF_RECORD_FORK: | |
746 | case PERF_RECORD_EXIT: | |
45694aa7 | 747 | perf_event__process_task(tool, event, sample, machine); |
b83f920e | 748 | break; |
ef2bf6d0 | 749 | case PERF_RECORD_LOST: |
45694aa7 | 750 | perf_event__process_lost(tool, event, sample, machine); |
b83f920e SD |
751 | default: |
752 | break; | |
753 | } | |
754 | ||
755 | return 0; | |
756 | } | |
757 | ||
59ee68ec | 758 | void thread__find_addr_map(struct thread *self, |
743eb868 ACM |
759 | struct machine *machine, u8 cpumode, |
760 | enum map_type type, u64 addr, | |
59ee68ec | 761 | struct addr_location *al) |
1ed091c4 | 762 | { |
9958e1f0 | 763 | struct map_groups *mg = &self->mg; |
1ed091c4 | 764 | |
9958e1f0 | 765 | al->thread = self; |
1ed091c4 | 766 | al->addr = addr; |
a1645ce1 ZY |
767 | al->cpumode = cpumode; |
768 | al->filtered = false; | |
1ed091c4 | 769 | |
743eb868 ACM |
770 | if (machine == NULL) { |
771 | al->map = NULL; | |
772 | return; | |
773 | } | |
774 | ||
a1645ce1 | 775 | if (cpumode == PERF_RECORD_MISC_KERNEL && perf_host) { |
1ed091c4 | 776 | al->level = 'k'; |
23346f21 | 777 | mg = &machine->kmaps; |
a1645ce1 | 778 | } else if (cpumode == PERF_RECORD_MISC_USER && perf_host) { |
1ed091c4 | 779 | al->level = '.'; |
a1645ce1 ZY |
780 | } else if (cpumode == PERF_RECORD_MISC_GUEST_KERNEL && perf_guest) { |
781 | al->level = 'g'; | |
23346f21 | 782 | mg = &machine->kmaps; |
a1645ce1 ZY |
783 | } else { |
784 | /* | |
785 | * 'u' means guest os user space. | |
786 | * TODO: We don't support guest user space. Might support late. | |
787 | */ | |
788 | if (cpumode == PERF_RECORD_MISC_GUEST_USER && perf_guest) | |
789 | al->level = 'u'; | |
790 | else | |
791 | al->level = 'H'; | |
1ed091c4 | 792 | al->map = NULL; |
a1645ce1 ZY |
793 | |
794 | if ((cpumode == PERF_RECORD_MISC_GUEST_USER || | |
795 | cpumode == PERF_RECORD_MISC_GUEST_KERNEL) && | |
796 | !perf_guest) | |
797 | al->filtered = true; | |
798 | if ((cpumode == PERF_RECORD_MISC_USER || | |
799 | cpumode == PERF_RECORD_MISC_KERNEL) && | |
800 | !perf_host) | |
801 | al->filtered = true; | |
802 | ||
1ed091c4 ACM |
803 | return; |
804 | } | |
805 | try_again: | |
9958e1f0 | 806 | al->map = map_groups__find(mg, type, al->addr); |
1ed091c4 ACM |
807 | if (al->map == NULL) { |
808 | /* | |
809 | * If this is outside of all known maps, and is a negative | |
810 | * address, try to look it up in the kernel dso, as it might be | |
811 | * a vsyscall or vdso (which executes in user-mode). | |
812 | * | |
813 | * XXX This is nasty, we should have a symbol list in the | |
814 | * "[vdso]" dso, but for now lets use the old trick of looking | |
815 | * in the whole kernel symbol list. | |
816 | */ | |
a1645ce1 | 817 | if ((long long)al->addr < 0 && |
6c6804fb | 818 | cpumode == PERF_RECORD_MISC_USER && |
23346f21 ACM |
819 | machine && mg != &machine->kmaps) { |
820 | mg = &machine->kmaps; | |
1ed091c4 ACM |
821 | goto try_again; |
822 | } | |
59ee68ec | 823 | } else |
1ed091c4 | 824 | al->addr = al->map->map_ip(al->map, al->addr); |
59ee68ec ACM |
825 | } |
826 | ||
743eb868 ACM |
827 | void thread__find_addr_location(struct thread *thread, struct machine *machine, |
828 | u8 cpumode, enum map_type type, u64 addr, | |
59ee68ec ACM |
829 | struct addr_location *al, |
830 | symbol_filter_t filter) | |
831 | { | |
743eb868 | 832 | thread__find_addr_map(thread, machine, cpumode, type, addr, al); |
59ee68ec | 833 | if (al->map != NULL) |
9de89fe7 | 834 | al->sym = map__find_symbol(al->map, al->addr, filter); |
59ee68ec ACM |
835 | else |
836 | al->sym = NULL; | |
1ed091c4 ACM |
837 | } |
838 | ||
8115d60c | 839 | int perf_event__preprocess_sample(const union perf_event *event, |
743eb868 | 840 | struct machine *machine, |
8115d60c ACM |
841 | struct addr_location *al, |
842 | struct perf_sample *sample, | |
843 | symbol_filter_t filter) | |
1ed091c4 | 844 | { |
8115d60c | 845 | u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; |
743eb868 | 846 | struct thread *thread = machine__findnew_thread(machine, event->ip.pid); |
41a37e20 | 847 | |
1ed091c4 ACM |
848 | if (thread == NULL) |
849 | return -1; | |
850 | ||
c410a338 ACM |
851 | if (symbol_conf.comm_list && |
852 | !strlist__has_entry(symbol_conf.comm_list, thread->comm)) | |
853 | goto out_filtered; | |
854 | ||
1ed091c4 | 855 | dump_printf(" ... thread: %s:%d\n", thread->comm, thread->pid); |
1f626bc3 | 856 | /* |
743eb868 | 857 | * Have we already created the kernel maps for this machine? |
1f626bc3 ACM |
858 | * |
859 | * This should have happened earlier, when we processed the kernel MMAP | |
860 | * events, but for older perf.data files there was no such thing, so do | |
861 | * it now. | |
862 | */ | |
863 | if (cpumode == PERF_RECORD_MISC_KERNEL && | |
743eb868 ACM |
864 | machine->vmlinux_maps[MAP__FUNCTION] == NULL) |
865 | machine__create_kernel_maps(machine); | |
1ed091c4 | 866 | |
743eb868 ACM |
867 | thread__find_addr_map(thread, machine, cpumode, MAP__FUNCTION, |
868 | event->ip.ip, al); | |
1ed091c4 ACM |
869 | dump_printf(" ...... dso: %s\n", |
870 | al->map ? al->map->dso->long_name : | |
871 | al->level == 'H' ? "[hypervisor]" : "<not found>"); | |
96415e4d | 872 | al->sym = NULL; |
8d50e5b4 | 873 | al->cpu = sample->cpu; |
96415e4d ACM |
874 | |
875 | if (al->map) { | |
cb8f4e9a NK |
876 | struct dso *dso = al->map->dso; |
877 | ||
96415e4d | 878 | if (symbol_conf.dso_list && |
cb8f4e9a NK |
879 | (!dso || !(strlist__has_entry(symbol_conf.dso_list, |
880 | dso->short_name) || | |
881 | (dso->short_name != dso->long_name && | |
882 | strlist__has_entry(symbol_conf.dso_list, | |
883 | dso->long_name))))) | |
96415e4d | 884 | goto out_filtered; |
96415e4d ACM |
885 | |
886 | al->sym = map__find_symbol(al->map, al->addr, filter); | |
887 | } | |
c410a338 ACM |
888 | |
889 | if (symbol_conf.sym_list && al->sym && | |
890 | !strlist__has_entry(symbol_conf.sym_list, al->sym->name)) | |
891 | goto out_filtered; | |
892 | ||
c410a338 ACM |
893 | return 0; |
894 | ||
895 | out_filtered: | |
896 | al->filtered = true; | |
1ed091c4 ACM |
897 | return 0; |
898 | } |