Commit | Line | Data |
---|---|---|
234fbbf5 | 1 | #include <linux/types.h> |
7ef80703 | 2 | #include <sys/mman.h> |
234fbbf5 ACM |
3 | #include "event.h" |
4 | #include "debug.h" | |
b3cef7f6 | 5 | #include "hist.h" |
f62d3f0f | 6 | #include "machine.h" |
c410a338 | 7 | #include "sort.h" |
234fbbf5 | 8 | #include "string.h" |
c410a338 | 9 | #include "strlist.h" |
62daacb5 | 10 | #include "thread.h" |
7c940c18 | 11 | #include "thread_map.h" |
c506c96b | 12 | #include "symbol/kallsyms.h" |
234fbbf5 | 13 | |
8115d60c | 14 | static const char *perf_event__names[] = { |
3cb6d154 FW |
15 | [0] = "TOTAL", |
16 | [PERF_RECORD_MMAP] = "MMAP", | |
5c5e854b | 17 | [PERF_RECORD_MMAP2] = "MMAP2", |
3cb6d154 FW |
18 | [PERF_RECORD_LOST] = "LOST", |
19 | [PERF_RECORD_COMM] = "COMM", | |
20 | [PERF_RECORD_EXIT] = "EXIT", | |
21 | [PERF_RECORD_THROTTLE] = "THROTTLE", | |
22 | [PERF_RECORD_UNTHROTTLE] = "UNTHROTTLE", | |
23 | [PERF_RECORD_FORK] = "FORK", | |
24 | [PERF_RECORD_READ] = "READ", | |
25 | [PERF_RECORD_SAMPLE] = "SAMPLE", | |
4a96f7a0 | 26 | [PERF_RECORD_AUX] = "AUX", |
0ad21f68 | 27 | [PERF_RECORD_ITRACE_START] = "ITRACE_START", |
c4937a91 | 28 | [PERF_RECORD_LOST_SAMPLES] = "LOST_SAMPLES", |
0286039f AH |
29 | [PERF_RECORD_SWITCH] = "SWITCH", |
30 | [PERF_RECORD_SWITCH_CPU_WIDE] = "SWITCH_CPU_WIDE", | |
3cb6d154 FW |
31 | [PERF_RECORD_HEADER_ATTR] = "ATTR", |
32 | [PERF_RECORD_HEADER_EVENT_TYPE] = "EVENT_TYPE", | |
33 | [PERF_RECORD_HEADER_TRACING_DATA] = "TRACING_DATA", | |
34 | [PERF_RECORD_HEADER_BUILD_ID] = "BUILD_ID", | |
35 | [PERF_RECORD_FINISHED_ROUND] = "FINISHED_ROUND", | |
3c659eed | 36 | [PERF_RECORD_ID_INDEX] = "ID_INDEX", |
a16ac023 AH |
37 | [PERF_RECORD_AUXTRACE_INFO] = "AUXTRACE_INFO", |
38 | [PERF_RECORD_AUXTRACE] = "AUXTRACE", | |
e9bf54d2 | 39 | [PERF_RECORD_AUXTRACE_ERROR] = "AUXTRACE_ERROR", |
5f3339d2 | 40 | [PERF_RECORD_THREAD_MAP] = "THREAD_MAP", |
6640b6c2 | 41 | [PERF_RECORD_CPU_MAP] = "CPU_MAP", |
c8446b9b ACM |
42 | }; |
43 | ||
8115d60c | 44 | const char *perf_event__name(unsigned int id) |
3835bc00 | 45 | { |
8115d60c | 46 | if (id >= ARRAY_SIZE(perf_event__names)) |
3835bc00 | 47 | return "INVALID"; |
8115d60c | 48 | if (!perf_event__names[id]) |
3835bc00 | 49 | return "UNKNOWN"; |
8115d60c | 50 | return perf_event__names[id]; |
3835bc00 TG |
51 | } |
52 | ||
8d50e5b4 | 53 | static struct perf_sample synth_sample = { |
640c03ce ACM |
54 | .pid = -1, |
55 | .tid = -1, | |
56 | .time = -1, | |
57 | .stream_id = -1, | |
58 | .cpu = -1, | |
59 | .period = 1, | |
60 | }; | |
61 | ||
5aa0b030 DA |
62 | /* |
63 | * Assumes that the first 4095 bytes of /proc/pid/stat contains | |
ca6c41c5 | 64 | * the comm, tgid and ppid. |
5aa0b030 | 65 | */ |
ca6c41c5 DA |
66 | static int perf_event__get_comm_ids(pid_t pid, char *comm, size_t len, |
67 | pid_t *tgid, pid_t *ppid) | |
234fbbf5 | 68 | { |
234fbbf5 | 69 | char filename[PATH_MAX]; |
5aa0b030 DA |
70 | char bf[4096]; |
71 | int fd; | |
38349665 AH |
72 | size_t size = 0; |
73 | ssize_t n; | |
ca6c41c5 DA |
74 | char *nl, *name, *tgids, *ppids; |
75 | ||
76 | *tgid = -1; | |
77 | *ppid = -1; | |
234fbbf5 ACM |
78 | |
79 | snprintf(filename, sizeof(filename), "/proc/%d/status", pid); | |
80 | ||
5aa0b030 DA |
81 | fd = open(filename, O_RDONLY); |
82 | if (fd < 0) { | |
234fbbf5 | 83 | pr_debug("couldn't open %s\n", filename); |
ca6c41c5 | 84 | return -1; |
234fbbf5 ACM |
85 | } |
86 | ||
5aa0b030 DA |
87 | n = read(fd, bf, sizeof(bf) - 1); |
88 | close(fd); | |
89 | if (n <= 0) { | |
ca6c41c5 | 90 | pr_warning("Couldn't get COMM, tigd and ppid for pid %d\n", |
5aa0b030 DA |
91 | pid); |
92 | return -1; | |
234fbbf5 | 93 | } |
5aa0b030 | 94 | bf[n] = '\0'; |
234fbbf5 | 95 | |
5aa0b030 DA |
96 | name = strstr(bf, "Name:"); |
97 | tgids = strstr(bf, "Tgid:"); | |
ca6c41c5 | 98 | ppids = strstr(bf, "PPid:"); |
5aa0b030 DA |
99 | |
100 | if (name) { | |
101 | name += 5; /* strlen("Name:") */ | |
102 | ||
103 | while (*name && isspace(*name)) | |
104 | ++name; | |
105 | ||
106 | nl = strchr(name, '\n'); | |
107 | if (nl) | |
108 | *nl = '\0'; | |
109 | ||
110 | size = strlen(name); | |
111 | if (size >= len) | |
112 | size = len - 1; | |
113 | memcpy(comm, name, size); | |
114 | comm[size] = '\0'; | |
115 | } else { | |
116 | pr_debug("Name: string not found for pid %d\n", pid); | |
117 | } | |
118 | ||
119 | if (tgids) { | |
120 | tgids += 5; /* strlen("Tgid:") */ | |
ca6c41c5 | 121 | *tgid = atoi(tgids); |
5aa0b030 DA |
122 | } else { |
123 | pr_debug("Tgid: string not found for pid %d\n", pid); | |
124 | } | |
f5faf726 | 125 | |
ca6c41c5 DA |
126 | if (ppids) { |
127 | ppids += 5; /* strlen("PPid:") */ | |
128 | *ppid = atoi(ppids); | |
129 | } else { | |
130 | pr_debug("PPid: string not found for pid %d\n", pid); | |
131 | } | |
132 | ||
133 | return 0; | |
f5faf726 DA |
134 | } |
135 | ||
ca6c41c5 DA |
136 | static int perf_event__prepare_comm(union perf_event *event, pid_t pid, |
137 | struct machine *machine, | |
138 | pid_t *tgid, pid_t *ppid) | |
f5faf726 | 139 | { |
f5faf726 | 140 | size_t size; |
ca6c41c5 DA |
141 | |
142 | *ppid = -1; | |
f5faf726 DA |
143 | |
144 | memset(&event->comm, 0, sizeof(event->comm)); | |
145 | ||
ca6c41c5 DA |
146 | if (machine__is_host(machine)) { |
147 | if (perf_event__get_comm_ids(pid, event->comm.comm, | |
148 | sizeof(event->comm.comm), | |
149 | tgid, ppid) != 0) { | |
150 | return -1; | |
151 | } | |
152 | } else { | |
153 | *tgid = machine->pid; | |
154 | } | |
f5db57c4 | 155 | |
ca6c41c5 DA |
156 | if (*tgid < 0) |
157 | return -1; | |
f5faf726 | 158 | |
ca6c41c5 | 159 | event->comm.pid = *tgid; |
9c90a61c | 160 | event->comm.header.type = PERF_RECORD_COMM; |
f5faf726 DA |
161 | |
162 | size = strlen(event->comm.comm) + 1; | |
9ac3e487 | 163 | size = PERF_ALIGN(size, sizeof(u64)); |
743eb868 | 164 | memset(event->comm.comm + size, 0, machine->id_hdr_size); |
9c90a61c ACM |
165 | event->comm.header.size = (sizeof(event->comm) - |
166 | (sizeof(event->comm.comm) - size) + | |
743eb868 | 167 | machine->id_hdr_size); |
bfd66cc7 | 168 | event->comm.tid = pid; |
ca6c41c5 DA |
169 | |
170 | return 0; | |
4aa5f4f7 ACM |
171 | } |
172 | ||
e803cf97 | 173 | pid_t perf_event__synthesize_comm(struct perf_tool *tool, |
4aa5f4f7 ACM |
174 | union perf_event *event, pid_t pid, |
175 | perf_event__handler_t process, | |
176 | struct machine *machine) | |
177 | { | |
ca6c41c5 | 178 | pid_t tgid, ppid; |
4aa5f4f7 | 179 | |
ca6c41c5 DA |
180 | if (perf_event__prepare_comm(event, pid, machine, &tgid, &ppid) != 0) |
181 | return -1; | |
f5faf726 | 182 | |
bfd66cc7 DZ |
183 | if (process(tool, event, &synth_sample, machine) != 0) |
184 | return -1; | |
234fbbf5 | 185 | |
9c90a61c | 186 | return tgid; |
234fbbf5 ACM |
187 | } |
188 | ||
363b785f | 189 | static int perf_event__synthesize_fork(struct perf_tool *tool, |
ca6c41c5 DA |
190 | union perf_event *event, |
191 | pid_t pid, pid_t tgid, pid_t ppid, | |
192 | perf_event__handler_t process, | |
363b785f DZ |
193 | struct machine *machine) |
194 | { | |
195 | memset(&event->fork, 0, sizeof(event->fork) + machine->id_hdr_size); | |
196 | ||
7764a385 DA |
197 | /* |
198 | * for main thread set parent to ppid from status file. For other | |
199 | * threads set parent pid to main thread. ie., assume main thread | |
200 | * spawns all threads in a process | |
201 | */ | |
202 | if (tgid == pid) { | |
203 | event->fork.ppid = ppid; | |
204 | event->fork.ptid = ppid; | |
205 | } else { | |
206 | event->fork.ppid = tgid; | |
207 | event->fork.ptid = tgid; | |
208 | } | |
363b785f DZ |
209 | event->fork.pid = tgid; |
210 | event->fork.tid = pid; | |
211 | event->fork.header.type = PERF_RECORD_FORK; | |
212 | ||
213 | event->fork.header.size = (sizeof(event->fork) + machine->id_hdr_size); | |
214 | ||
215 | if (process(tool, event, &synth_sample, machine) != 0) | |
216 | return -1; | |
217 | ||
218 | return 0; | |
219 | } | |
220 | ||
a18382b6 JO |
221 | int perf_event__synthesize_mmap_events(struct perf_tool *tool, |
222 | union perf_event *event, | |
223 | pid_t pid, pid_t tgid, | |
224 | perf_event__handler_t process, | |
225 | struct machine *machine, | |
9d9cad76 KL |
226 | bool mmap_data, |
227 | unsigned int proc_map_timeout) | |
234fbbf5 ACM |
228 | { |
229 | char filename[PATH_MAX]; | |
230 | FILE *fp; | |
930e6fcd KL |
231 | unsigned long long t; |
232 | bool truncation = false; | |
9d9cad76 | 233 | unsigned long long timeout = proc_map_timeout * 1000000ULL; |
1e6d5322 | 234 | int rc = 0; |
234fbbf5 | 235 | |
c239c25a DY |
236 | if (machine__is_default_guest(machine)) |
237 | return 0; | |
238 | ||
99563465 DY |
239 | snprintf(filename, sizeof(filename), "%s/proc/%d/maps", |
240 | machine->root_dir, pid); | |
234fbbf5 ACM |
241 | |
242 | fp = fopen(filename, "r"); | |
243 | if (fp == NULL) { | |
244 | /* | |
245 | * We raced with a task exiting - just return: | |
246 | */ | |
247 | pr_debug("couldn't open %s\n", filename); | |
248 | return -1; | |
249 | } | |
250 | ||
a5a5ba72 | 251 | event->header.type = PERF_RECORD_MMAP2; |
930e6fcd | 252 | t = rdclock(); |
9c90a61c | 253 | |
234fbbf5 | 254 | while (1) { |
60648033 NK |
255 | char bf[BUFSIZ]; |
256 | char prot[5]; | |
257 | char execname[PATH_MAX]; | |
258 | char anonstr[] = "//anon"; | |
a5a5ba72 | 259 | unsigned int ino; |
234fbbf5 | 260 | size_t size; |
5c5e854b | 261 | ssize_t n; |
60648033 | 262 | |
234fbbf5 ACM |
263 | if (fgets(bf, sizeof(bf), fp) == NULL) |
264 | break; | |
265 | ||
9d9cad76 KL |
266 | if ((rdclock() - t) > timeout) { |
267 | pr_warning("Reading %s time out. " | |
268 | "You may want to increase " | |
269 | "the time limit by --proc-map-timeout\n", | |
270 | filename); | |
930e6fcd KL |
271 | truncation = true; |
272 | goto out; | |
273 | } | |
274 | ||
60648033 NK |
275 | /* ensure null termination since stack will be reused. */ |
276 | strcpy(execname, ""); | |
277 | ||
234fbbf5 | 278 | /* 00400000-0040c000 r-xp 00000000 fd:01 41038 /bin/cat */ |
a5a5ba72 DZ |
279 | n = sscanf(bf, "%"PRIx64"-%"PRIx64" %s %"PRIx64" %x:%x %u %s\n", |
280 | &event->mmap2.start, &event->mmap2.len, prot, | |
281 | &event->mmap2.pgoff, &event->mmap2.maj, | |
282 | &event->mmap2.min, | |
283 | &ino, execname); | |
284 | ||
9d4ecc88 DZ |
285 | /* |
286 | * Anon maps don't have the execname. | |
287 | */ | |
a5a5ba72 | 288 | if (n < 7) |
5c5e854b | 289 | continue; |
a5a5ba72 DZ |
290 | |
291 | event->mmap2.ino = (u64)ino; | |
292 | ||
62605dc5 ACM |
293 | /* |
294 | * Just like the kernel, see __perf_event_mmap in kernel/perf_event.c | |
295 | */ | |
73547aac DY |
296 | if (machine__is_host(machine)) |
297 | event->header.misc = PERF_RECORD_MISC_USER; | |
298 | else | |
299 | event->header.misc = PERF_RECORD_MISC_GUEST_USER; | |
60648033 | 300 | |
7ef80703 DZ |
301 | /* map protection and flags bits */ |
302 | event->mmap2.prot = 0; | |
303 | event->mmap2.flags = 0; | |
304 | if (prot[0] == 'r') | |
305 | event->mmap2.prot |= PROT_READ; | |
306 | if (prot[1] == 'w') | |
307 | event->mmap2.prot |= PROT_WRITE; | |
308 | if (prot[2] == 'x') | |
309 | event->mmap2.prot |= PROT_EXEC; | |
310 | ||
311 | if (prot[3] == 's') | |
312 | event->mmap2.flags |= MAP_SHARED; | |
313 | else | |
314 | event->mmap2.flags |= MAP_PRIVATE; | |
315 | ||
62605dc5 ACM |
316 | if (prot[2] != 'x') { |
317 | if (!mmap_data || prot[0] != 'r') | |
318 | continue; | |
319 | ||
320 | event->header.misc |= PERF_RECORD_MISC_MMAP_DATA; | |
321 | } | |
60648033 | 322 | |
930e6fcd KL |
323 | out: |
324 | if (truncation) | |
325 | event->header.misc |= PERF_RECORD_MISC_PROC_MAP_PARSE_TIMEOUT; | |
326 | ||
60648033 NK |
327 | if (!strcmp(execname, "")) |
328 | strcpy(execname, anonstr); | |
329 | ||
330 | size = strlen(execname) + 1; | |
a5a5ba72 | 331 | memcpy(event->mmap2.filename, execname, size); |
60648033 | 332 | size = PERF_ALIGN(size, sizeof(u64)); |
a5a5ba72 DZ |
333 | event->mmap2.len -= event->mmap.start; |
334 | event->mmap2.header.size = (sizeof(event->mmap2) - | |
335 | (sizeof(event->mmap2.filename) - size)); | |
336 | memset(event->mmap2.filename + size, 0, machine->id_hdr_size); | |
337 | event->mmap2.header.size += machine->id_hdr_size; | |
338 | event->mmap2.pid = tgid; | |
339 | event->mmap2.tid = pid; | |
60648033 NK |
340 | |
341 | if (process(tool, event, &synth_sample, machine) != 0) { | |
342 | rc = -1; | |
343 | break; | |
234fbbf5 | 344 | } |
930e6fcd KL |
345 | |
346 | if (truncation) | |
347 | break; | |
234fbbf5 ACM |
348 | } |
349 | ||
350 | fclose(fp); | |
1e6d5322 | 351 | return rc; |
234fbbf5 ACM |
352 | } |
353 | ||
45694aa7 | 354 | int perf_event__synthesize_modules(struct perf_tool *tool, |
d20deb64 | 355 | perf_event__handler_t process, |
8115d60c | 356 | struct machine *machine) |
b7cece76 | 357 | { |
1e6d5322 | 358 | int rc = 0; |
4bb7123d | 359 | struct map *pos; |
23346f21 | 360 | struct map_groups *kmaps = &machine->kmaps; |
1eee78ae | 361 | struct maps *maps = &kmaps->maps[MAP__FUNCTION]; |
8115d60c | 362 | union perf_event *event = zalloc((sizeof(event->mmap) + |
743eb868 | 363 | machine->id_hdr_size)); |
9c90a61c ACM |
364 | if (event == NULL) { |
365 | pr_debug("Not enough memory synthesizing mmap event " | |
366 | "for kernel modules\n"); | |
367 | return -1; | |
368 | } | |
369 | ||
370 | event->header.type = PERF_RECORD_MMAP; | |
b7cece76 | 371 | |
a1645ce1 ZY |
372 | /* |
373 | * kernel uses 0 for user space maps, see kernel/perf_event.c | |
374 | * __perf_event_mmap | |
375 | */ | |
23346f21 | 376 | if (machine__is_host(machine)) |
9c90a61c | 377 | event->header.misc = PERF_RECORD_MISC_KERNEL; |
a1645ce1 | 378 | else |
9c90a61c | 379 | event->header.misc = PERF_RECORD_MISC_GUEST_KERNEL; |
a1645ce1 | 380 | |
4bb7123d | 381 | for (pos = maps__first(maps); pos; pos = map__next(pos)) { |
b7cece76 | 382 | size_t size; |
b7cece76 | 383 | |
ab9c2bdc | 384 | if (__map__is_kernel(pos)) |
b7cece76 ACM |
385 | continue; |
386 | ||
9ac3e487 | 387 | size = PERF_ALIGN(pos->dso->long_name_len + 1, sizeof(u64)); |
9c90a61c ACM |
388 | event->mmap.header.type = PERF_RECORD_MMAP; |
389 | event->mmap.header.size = (sizeof(event->mmap) - | |
390 | (sizeof(event->mmap.filename) - size)); | |
743eb868 ACM |
391 | memset(event->mmap.filename + size, 0, machine->id_hdr_size); |
392 | event->mmap.header.size += machine->id_hdr_size; | |
9c90a61c ACM |
393 | event->mmap.start = pos->start; |
394 | event->mmap.len = pos->end - pos->start; | |
395 | event->mmap.pid = machine->pid; | |
396 | ||
397 | memcpy(event->mmap.filename, pos->dso->long_name, | |
b7cece76 | 398 | pos->dso->long_name_len + 1); |
1e6d5322 DA |
399 | if (process(tool, event, &synth_sample, machine) != 0) { |
400 | rc = -1; | |
401 | break; | |
402 | } | |
b7cece76 ACM |
403 | } |
404 | ||
9c90a61c | 405 | free(event); |
1e6d5322 | 406 | return rc; |
b7cece76 ACM |
407 | } |
408 | ||
8115d60c ACM |
409 | static int __event__synthesize_thread(union perf_event *comm_event, |
410 | union perf_event *mmap_event, | |
363b785f | 411 | union perf_event *fork_event, |
defd8d38 DA |
412 | pid_t pid, int full, |
413 | perf_event__handler_t process, | |
45694aa7 | 414 | struct perf_tool *tool, |
9d9cad76 KL |
415 | struct machine *machine, |
416 | bool mmap_data, | |
417 | unsigned int proc_map_timeout) | |
234fbbf5 | 418 | { |
bfd66cc7 DZ |
419 | char filename[PATH_MAX]; |
420 | DIR *tasks; | |
421 | struct dirent dirent, *next; | |
ca6c41c5 | 422 | pid_t tgid, ppid; |
d998b732 | 423 | int rc = 0; |
bfd66cc7 DZ |
424 | |
425 | /* special case: only send one comm event using passed in pid */ | |
426 | if (!full) { | |
427 | tgid = perf_event__synthesize_comm(tool, comm_event, pid, | |
428 | process, machine); | |
429 | ||
430 | if (tgid == -1) | |
431 | return -1; | |
432 | ||
433 | return perf_event__synthesize_mmap_events(tool, mmap_event, pid, tgid, | |
9d9cad76 KL |
434 | process, machine, mmap_data, |
435 | proc_map_timeout); | |
bfd66cc7 DZ |
436 | } |
437 | ||
438 | if (machine__is_default_guest(machine)) | |
439 | return 0; | |
440 | ||
441 | snprintf(filename, sizeof(filename), "%s/proc/%d/task", | |
442 | machine->root_dir, pid); | |
443 | ||
444 | tasks = opendir(filename); | |
445 | if (tasks == NULL) { | |
446 | pr_debug("couldn't open %s\n", filename); | |
447 | return 0; | |
448 | } | |
449 | ||
450 | while (!readdir_r(tasks, &dirent, &next) && next) { | |
451 | char *end; | |
bfd66cc7 DZ |
452 | pid_t _pid; |
453 | ||
454 | _pid = strtol(dirent.d_name, &end, 10); | |
455 | if (*end) | |
456 | continue; | |
457 | ||
d998b732 | 458 | rc = -1; |
ca6c41c5 DA |
459 | if (perf_event__prepare_comm(comm_event, _pid, machine, |
460 | &tgid, &ppid) != 0) | |
d998b732 | 461 | break; |
bfd66cc7 | 462 | |
4aa5f4f7 | 463 | if (perf_event__synthesize_fork(tool, fork_event, _pid, tgid, |
ca6c41c5 | 464 | ppid, process, machine) < 0) |
d998b732 | 465 | break; |
4aa5f4f7 ACM |
466 | /* |
467 | * Send the prepared comm event | |
468 | */ | |
469 | if (process(tool, comm_event, &synth_sample, machine) != 0) | |
d998b732 | 470 | break; |
4aa5f4f7 | 471 | |
d998b732 | 472 | rc = 0; |
363b785f DZ |
473 | if (_pid == pid) { |
474 | /* process the parent's maps too */ | |
475 | rc = perf_event__synthesize_mmap_events(tool, mmap_event, pid, tgid, | |
9d9cad76 | 476 | process, machine, mmap_data, proc_map_timeout); |
d998b732 ACM |
477 | if (rc) |
478 | break; | |
363b785f | 479 | } |
bfd66cc7 DZ |
480 | } |
481 | ||
482 | closedir(tasks); | |
d998b732 | 483 | return rc; |
234fbbf5 ACM |
484 | } |
485 | ||
45694aa7 | 486 | int perf_event__synthesize_thread_map(struct perf_tool *tool, |
d20deb64 | 487 | struct thread_map *threads, |
7c940c18 | 488 | perf_event__handler_t process, |
62605dc5 | 489 | struct machine *machine, |
9d9cad76 KL |
490 | bool mmap_data, |
491 | unsigned int proc_map_timeout) | |
9c90a61c | 492 | { |
363b785f | 493 | union perf_event *comm_event, *mmap_event, *fork_event; |
defd8d38 | 494 | int err = -1, thread, j; |
9c90a61c | 495 | |
743eb868 | 496 | comm_event = malloc(sizeof(comm_event->comm) + machine->id_hdr_size); |
9c90a61c ACM |
497 | if (comm_event == NULL) |
498 | goto out; | |
499 | ||
743eb868 | 500 | mmap_event = malloc(sizeof(mmap_event->mmap) + machine->id_hdr_size); |
9c90a61c ACM |
501 | if (mmap_event == NULL) |
502 | goto out_free_comm; | |
503 | ||
363b785f DZ |
504 | fork_event = malloc(sizeof(fork_event->fork) + machine->id_hdr_size); |
505 | if (fork_event == NULL) | |
506 | goto out_free_mmap; | |
507 | ||
401b8e13 ACM |
508 | err = 0; |
509 | for (thread = 0; thread < threads->nr; ++thread) { | |
510 | if (__event__synthesize_thread(comm_event, mmap_event, | |
363b785f | 511 | fork_event, |
e13798c7 | 512 | thread_map__pid(threads, thread), 0, |
62605dc5 | 513 | process, tool, machine, |
9d9cad76 | 514 | mmap_data, proc_map_timeout)) { |
401b8e13 ACM |
515 | err = -1; |
516 | break; | |
517 | } | |
defd8d38 DA |
518 | |
519 | /* | |
520 | * comm.pid is set to thread group id by | |
521 | * perf_event__synthesize_comm | |
522 | */ | |
e13798c7 | 523 | if ((int) comm_event->comm.pid != thread_map__pid(threads, thread)) { |
defd8d38 DA |
524 | bool need_leader = true; |
525 | ||
526 | /* is thread group leader in thread_map? */ | |
527 | for (j = 0; j < threads->nr; ++j) { | |
e13798c7 | 528 | if ((int) comm_event->comm.pid == thread_map__pid(threads, j)) { |
defd8d38 DA |
529 | need_leader = false; |
530 | break; | |
531 | } | |
532 | } | |
533 | ||
534 | /* if not, generate events for it */ | |
535 | if (need_leader && | |
62605dc5 | 536 | __event__synthesize_thread(comm_event, mmap_event, |
363b785f | 537 | fork_event, |
62605dc5 ACM |
538 | comm_event->comm.pid, 0, |
539 | process, tool, machine, | |
9d9cad76 | 540 | mmap_data, proc_map_timeout)) { |
defd8d38 DA |
541 | err = -1; |
542 | break; | |
543 | } | |
544 | } | |
401b8e13 | 545 | } |
363b785f DZ |
546 | free(fork_event); |
547 | out_free_mmap: | |
9c90a61c ACM |
548 | free(mmap_event); |
549 | out_free_comm: | |
550 | free(comm_event); | |
551 | out: | |
552 | return err; | |
553 | } | |
554 | ||
45694aa7 | 555 | int perf_event__synthesize_threads(struct perf_tool *tool, |
d20deb64 | 556 | perf_event__handler_t process, |
9d9cad76 KL |
557 | struct machine *machine, |
558 | bool mmap_data, | |
559 | unsigned int proc_map_timeout) | |
234fbbf5 ACM |
560 | { |
561 | DIR *proc; | |
99563465 | 562 | char proc_path[PATH_MAX]; |
234fbbf5 | 563 | struct dirent dirent, *next; |
363b785f | 564 | union perf_event *comm_event, *mmap_event, *fork_event; |
9c90a61c ACM |
565 | int err = -1; |
566 | ||
574799bf NK |
567 | if (machine__is_default_guest(machine)) |
568 | return 0; | |
569 | ||
743eb868 | 570 | comm_event = malloc(sizeof(comm_event->comm) + machine->id_hdr_size); |
9c90a61c ACM |
571 | if (comm_event == NULL) |
572 | goto out; | |
573 | ||
743eb868 | 574 | mmap_event = malloc(sizeof(mmap_event->mmap) + machine->id_hdr_size); |
9c90a61c ACM |
575 | if (mmap_event == NULL) |
576 | goto out_free_comm; | |
234fbbf5 | 577 | |
363b785f DZ |
578 | fork_event = malloc(sizeof(fork_event->fork) + machine->id_hdr_size); |
579 | if (fork_event == NULL) | |
580 | goto out_free_mmap; | |
581 | ||
99563465 DY |
582 | snprintf(proc_path, sizeof(proc_path), "%s/proc", machine->root_dir); |
583 | proc = opendir(proc_path); | |
584 | ||
9c90a61c | 585 | if (proc == NULL) |
363b785f | 586 | goto out_free_fork; |
234fbbf5 ACM |
587 | |
588 | while (!readdir_r(proc, &dirent, &next) && next) { | |
589 | char *end; | |
590 | pid_t pid = strtol(dirent.d_name, &end, 10); | |
591 | ||
592 | if (*end) /* only interested in proper numerical dirents */ | |
593 | continue; | |
ba361c92 ACM |
594 | /* |
595 | * We may race with exiting thread, so don't stop just because | |
596 | * one thread couldn't be synthesized. | |
597 | */ | |
363b785f | 598 | __event__synthesize_thread(comm_event, mmap_event, fork_event, pid, |
9d9cad76 KL |
599 | 1, process, tool, machine, mmap_data, |
600 | proc_map_timeout); | |
234fbbf5 ACM |
601 | } |
602 | ||
9c90a61c | 603 | err = 0; |
1e6d5322 | 604 | closedir(proc); |
363b785f DZ |
605 | out_free_fork: |
606 | free(fork_event); | |
9c90a61c ACM |
607 | out_free_mmap: |
608 | free(mmap_event); | |
609 | out_free_comm: | |
610 | free(comm_event); | |
611 | out: | |
612 | return err; | |
234fbbf5 | 613 | } |
62daacb5 | 614 | |
56b03f3c ACM |
615 | struct process_symbol_args { |
616 | const char *name; | |
617 | u64 start; | |
618 | }; | |
619 | ||
3b01a413 | 620 | static int find_symbol_cb(void *arg, const char *name, char type, |
82151520 | 621 | u64 start) |
56b03f3c ACM |
622 | { |
623 | struct process_symbol_args *args = arg; | |
624 | ||
881516eb ACM |
625 | /* |
626 | * Must be a function or at least an alias, as in PARISC64, where "_text" is | |
627 | * an 'A' to the same address as "_stext". | |
628 | */ | |
629 | if (!(symbol_type__is_a(type, MAP__FUNCTION) || | |
630 | type == 'A') || strcmp(name, args->name)) | |
56b03f3c ACM |
631 | return 0; |
632 | ||
633 | args->start = start; | |
634 | return 1; | |
635 | } | |
636 | ||
29b596b5 AH |
637 | u64 kallsyms__get_function_start(const char *kallsyms_filename, |
638 | const char *symbol_name) | |
639 | { | |
640 | struct process_symbol_args args = { .name = symbol_name, }; | |
641 | ||
642 | if (kallsyms__parse(kallsyms_filename, &args, find_symbol_cb) <= 0) | |
643 | return 0; | |
644 | ||
645 | return args.start; | |
646 | } | |
647 | ||
45694aa7 | 648 | int perf_event__synthesize_kernel_mmap(struct perf_tool *tool, |
d20deb64 | 649 | perf_event__handler_t process, |
0ae617be | 650 | struct machine *machine) |
56b03f3c ACM |
651 | { |
652 | size_t size; | |
0ae617be | 653 | const char *mmap_name; |
a1645ce1 | 654 | char name_buff[PATH_MAX]; |
a5e813c6 | 655 | struct map *map = machine__kernel_map(machine); |
0ae617be | 656 | struct kmap *kmap; |
9c90a61c | 657 | int err; |
a5c2a4c9 AK |
658 | union perf_event *event; |
659 | ||
77e65977 | 660 | if (map == NULL) |
a5c2a4c9 AK |
661 | return -1; |
662 | ||
56b03f3c ACM |
663 | /* |
664 | * We should get this from /sys/kernel/sections/.text, but till that is | |
665 | * available use this, and after it is use this as a fallback for older | |
666 | * kernels. | |
667 | */ | |
a5c2a4c9 | 668 | event = zalloc((sizeof(event->mmap) + machine->id_hdr_size)); |
9c90a61c ACM |
669 | if (event == NULL) { |
670 | pr_debug("Not enough memory synthesizing mmap event " | |
671 | "for kernel modules\n"); | |
672 | return -1; | |
673 | } | |
56b03f3c | 674 | |
48ea8f54 | 675 | mmap_name = machine__mmap_name(machine, name_buff, sizeof(name_buff)); |
23346f21 | 676 | if (machine__is_host(machine)) { |
a1645ce1 ZY |
677 | /* |
678 | * kernel uses PERF_RECORD_MISC_USER for user space maps, | |
679 | * see kernel/perf_event.c __perf_event_mmap | |
680 | */ | |
9c90a61c | 681 | event->header.misc = PERF_RECORD_MISC_KERNEL; |
a1645ce1 | 682 | } else { |
9c90a61c | 683 | event->header.misc = PERF_RECORD_MISC_GUEST_KERNEL; |
0b9e01a4 | 684 | } |
56b03f3c | 685 | |
0ae617be | 686 | kmap = map__kmap(map); |
9c90a61c | 687 | size = snprintf(event->mmap.filename, sizeof(event->mmap.filename), |
0ae617be | 688 | "%s%s", mmap_name, kmap->ref_reloc_sym->name) + 1; |
9ac3e487 | 689 | size = PERF_ALIGN(size, sizeof(u64)); |
9c90a61c ACM |
690 | event->mmap.header.type = PERF_RECORD_MMAP; |
691 | event->mmap.header.size = (sizeof(event->mmap) - | |
743eb868 | 692 | (sizeof(event->mmap.filename) - size) + machine->id_hdr_size); |
0ae617be | 693 | event->mmap.pgoff = kmap->ref_reloc_sym->addr; |
9c90a61c ACM |
694 | event->mmap.start = map->start; |
695 | event->mmap.len = map->end - event->mmap.start; | |
696 | event->mmap.pid = machine->pid; | |
697 | ||
45694aa7 | 698 | err = process(tool, event, &synth_sample, machine); |
9c90a61c ACM |
699 | free(event); |
700 | ||
701 | return err; | |
56b03f3c ACM |
702 | } |
703 | ||
99471c96 JO |
704 | int perf_event__synthesize_thread_map2(struct perf_tool *tool, |
705 | struct thread_map *threads, | |
706 | perf_event__handler_t process, | |
707 | struct machine *machine) | |
708 | { | |
709 | union perf_event *event; | |
710 | int i, err, size; | |
711 | ||
712 | size = sizeof(event->thread_map); | |
713 | size += threads->nr * sizeof(event->thread_map.entries[0]); | |
714 | ||
715 | event = zalloc(size); | |
716 | if (!event) | |
717 | return -ENOMEM; | |
718 | ||
719 | event->header.type = PERF_RECORD_THREAD_MAP; | |
720 | event->header.size = size; | |
721 | event->thread_map.nr = threads->nr; | |
722 | ||
723 | for (i = 0; i < threads->nr; i++) { | |
724 | struct thread_map_event_entry *entry = &event->thread_map.entries[i]; | |
725 | char *comm = thread_map__comm(threads, i); | |
726 | ||
727 | if (!comm) | |
728 | comm = (char *) ""; | |
729 | ||
730 | entry->pid = thread_map__pid(threads, i); | |
731 | strncpy((char *) &entry->comm, comm, sizeof(entry->comm)); | |
732 | } | |
733 | ||
734 | err = process(tool, event, NULL, machine); | |
735 | ||
736 | free(event); | |
737 | return err; | |
738 | } | |
739 | ||
482ad897 ACM |
740 | size_t perf_event__fprintf_comm(union perf_event *event, FILE *fp) |
741 | { | |
022c50d0 AH |
742 | const char *s; |
743 | ||
744 | if (event->header.misc & PERF_RECORD_MISC_COMM_EXEC) | |
745 | s = " exec"; | |
746 | else | |
747 | s = ""; | |
748 | ||
50674065 | 749 | return fprintf(fp, "%s: %s:%d/%d\n", s, event->comm.comm, event->comm.pid, event->comm.tid); |
482ad897 ACM |
750 | } |
751 | ||
1d037ca1 | 752 | int perf_event__process_comm(struct perf_tool *tool __maybe_unused, |
d20deb64 | 753 | union perf_event *event, |
162f0bef | 754 | struct perf_sample *sample, |
743eb868 | 755 | struct machine *machine) |
62daacb5 | 756 | { |
162f0bef | 757 | return machine__process_comm_event(machine, event, sample); |
62daacb5 ACM |
758 | } |
759 | ||
1d037ca1 | 760 | int perf_event__process_lost(struct perf_tool *tool __maybe_unused, |
d20deb64 | 761 | union perf_event *event, |
162f0bef | 762 | struct perf_sample *sample, |
b0a7d1a0 | 763 | struct machine *machine) |
62daacb5 | 764 | { |
162f0bef | 765 | return machine__process_lost_event(machine, event, sample); |
a1645ce1 | 766 | } |
b7cece76 | 767 | |
4a96f7a0 AH |
768 | int perf_event__process_aux(struct perf_tool *tool __maybe_unused, |
769 | union perf_event *event, | |
770 | struct perf_sample *sample __maybe_unused, | |
771 | struct machine *machine) | |
772 | { | |
773 | return machine__process_aux_event(machine, event); | |
774 | } | |
775 | ||
0ad21f68 AH |
776 | int perf_event__process_itrace_start(struct perf_tool *tool __maybe_unused, |
777 | union perf_event *event, | |
778 | struct perf_sample *sample __maybe_unused, | |
779 | struct machine *machine) | |
780 | { | |
781 | return machine__process_itrace_start_event(machine, event); | |
782 | } | |
783 | ||
c4937a91 KL |
784 | int perf_event__process_lost_samples(struct perf_tool *tool __maybe_unused, |
785 | union perf_event *event, | |
786 | struct perf_sample *sample, | |
787 | struct machine *machine) | |
788 | { | |
789 | return machine__process_lost_samples_event(machine, event, sample); | |
790 | } | |
791 | ||
0286039f AH |
792 | int perf_event__process_switch(struct perf_tool *tool __maybe_unused, |
793 | union perf_event *event, | |
794 | struct perf_sample *sample __maybe_unused, | |
795 | struct machine *machine) | |
796 | { | |
797 | return machine__process_switch_event(machine, event); | |
798 | } | |
799 | ||
482ad897 ACM |
800 | size_t perf_event__fprintf_mmap(union perf_event *event, FILE *fp) |
801 | { | |
62605dc5 | 802 | return fprintf(fp, " %d/%d: [%#" PRIx64 "(%#" PRIx64 ") @ %#" PRIx64 "]: %c %s\n", |
482ad897 | 803 | event->mmap.pid, event->mmap.tid, event->mmap.start, |
62605dc5 ACM |
804 | event->mmap.len, event->mmap.pgoff, |
805 | (event->header.misc & PERF_RECORD_MISC_MMAP_DATA) ? 'r' : 'x', | |
806 | event->mmap.filename); | |
482ad897 ACM |
807 | } |
808 | ||
5c5e854b SE |
809 | size_t perf_event__fprintf_mmap2(union perf_event *event, FILE *fp) |
810 | { | |
811 | return fprintf(fp, " %d/%d: [%#" PRIx64 "(%#" PRIx64 ") @ %#" PRIx64 | |
7ef80703 | 812 | " %02x:%02x %"PRIu64" %"PRIu64"]: %c%c%c%c %s\n", |
5c5e854b SE |
813 | event->mmap2.pid, event->mmap2.tid, event->mmap2.start, |
814 | event->mmap2.len, event->mmap2.pgoff, event->mmap2.maj, | |
815 | event->mmap2.min, event->mmap2.ino, | |
816 | event->mmap2.ino_generation, | |
7ef80703 DZ |
817 | (event->mmap2.prot & PROT_READ) ? 'r' : '-', |
818 | (event->mmap2.prot & PROT_WRITE) ? 'w' : '-', | |
819 | (event->mmap2.prot & PROT_EXEC) ? 'x' : '-', | |
820 | (event->mmap2.flags & MAP_SHARED) ? 's' : 'p', | |
5c5e854b SE |
821 | event->mmap2.filename); |
822 | } | |
823 | ||
ec7fa596 JO |
824 | size_t perf_event__fprintf_thread_map(union perf_event *event, FILE *fp) |
825 | { | |
826 | struct thread_map *threads = thread_map__new_event(&event->thread_map); | |
827 | size_t ret; | |
828 | ||
829 | ret = fprintf(fp, " nr: "); | |
830 | ||
831 | if (threads) | |
832 | ret += thread_map__fprintf(threads, fp); | |
833 | else | |
834 | ret += fprintf(fp, "failed to get threads from event\n"); | |
835 | ||
836 | thread_map__put(threads); | |
837 | return ret; | |
838 | } | |
839 | ||
b0a7d1a0 | 840 | int perf_event__process_mmap(struct perf_tool *tool __maybe_unused, |
d20deb64 | 841 | union perf_event *event, |
162f0bef | 842 | struct perf_sample *sample, |
743eb868 | 843 | struct machine *machine) |
a1645ce1 | 844 | { |
162f0bef | 845 | return machine__process_mmap_event(machine, event, sample); |
62daacb5 ACM |
846 | } |
847 | ||
5c5e854b SE |
848 | int perf_event__process_mmap2(struct perf_tool *tool __maybe_unused, |
849 | union perf_event *event, | |
162f0bef | 850 | struct perf_sample *sample, |
5c5e854b SE |
851 | struct machine *machine) |
852 | { | |
162f0bef | 853 | return machine__process_mmap2_event(machine, event, sample); |
5c5e854b SE |
854 | } |
855 | ||
482ad897 ACM |
856 | size_t perf_event__fprintf_task(union perf_event *event, FILE *fp) |
857 | { | |
858 | return fprintf(fp, "(%d:%d):(%d:%d)\n", | |
859 | event->fork.pid, event->fork.tid, | |
860 | event->fork.ppid, event->fork.ptid); | |
861 | } | |
862 | ||
f62d3f0f | 863 | int perf_event__process_fork(struct perf_tool *tool __maybe_unused, |
d20deb64 | 864 | union perf_event *event, |
162f0bef | 865 | struct perf_sample *sample, |
f62d3f0f | 866 | struct machine *machine) |
62daacb5 | 867 | { |
162f0bef | 868 | return machine__process_fork_event(machine, event, sample); |
62daacb5 | 869 | } |
1ed091c4 | 870 | |
f62d3f0f ACM |
871 | int perf_event__process_exit(struct perf_tool *tool __maybe_unused, |
872 | union perf_event *event, | |
162f0bef | 873 | struct perf_sample *sample, |
f62d3f0f ACM |
874 | struct machine *machine) |
875 | { | |
162f0bef | 876 | return machine__process_exit_event(machine, event, sample); |
f62d3f0f ACM |
877 | } |
878 | ||
4a96f7a0 AH |
879 | size_t perf_event__fprintf_aux(union perf_event *event, FILE *fp) |
880 | { | |
881 | return fprintf(fp, " offset: %#"PRIx64" size: %#"PRIx64" flags: %#"PRIx64" [%s%s]\n", | |
882 | event->aux.aux_offset, event->aux.aux_size, | |
883 | event->aux.flags, | |
884 | event->aux.flags & PERF_AUX_FLAG_TRUNCATED ? "T" : "", | |
885 | event->aux.flags & PERF_AUX_FLAG_OVERWRITE ? "O" : ""); | |
886 | } | |
887 | ||
0ad21f68 AH |
888 | size_t perf_event__fprintf_itrace_start(union perf_event *event, FILE *fp) |
889 | { | |
890 | return fprintf(fp, " pid: %u tid: %u\n", | |
891 | event->itrace_start.pid, event->itrace_start.tid); | |
892 | } | |
893 | ||
0286039f AH |
894 | size_t perf_event__fprintf_switch(union perf_event *event, FILE *fp) |
895 | { | |
896 | bool out = event->header.misc & PERF_RECORD_MISC_SWITCH_OUT; | |
897 | const char *in_out = out ? "OUT" : "IN "; | |
898 | ||
899 | if (event->header.type == PERF_RECORD_SWITCH) | |
900 | return fprintf(fp, " %s\n", in_out); | |
901 | ||
902 | return fprintf(fp, " %s %s pid/tid: %5u/%-5u\n", | |
903 | in_out, out ? "next" : "prev", | |
904 | event->context_switch.next_prev_pid, | |
905 | event->context_switch.next_prev_tid); | |
906 | } | |
907 | ||
482ad897 ACM |
908 | size_t perf_event__fprintf(union perf_event *event, FILE *fp) |
909 | { | |
910 | size_t ret = fprintf(fp, "PERF_RECORD_%s", | |
911 | perf_event__name(event->header.type)); | |
912 | ||
913 | switch (event->header.type) { | |
914 | case PERF_RECORD_COMM: | |
915 | ret += perf_event__fprintf_comm(event, fp); | |
916 | break; | |
917 | case PERF_RECORD_FORK: | |
918 | case PERF_RECORD_EXIT: | |
919 | ret += perf_event__fprintf_task(event, fp); | |
920 | break; | |
921 | case PERF_RECORD_MMAP: | |
922 | ret += perf_event__fprintf_mmap(event, fp); | |
923 | break; | |
5c5e854b SE |
924 | case PERF_RECORD_MMAP2: |
925 | ret += perf_event__fprintf_mmap2(event, fp); | |
926 | break; | |
4a96f7a0 AH |
927 | case PERF_RECORD_AUX: |
928 | ret += perf_event__fprintf_aux(event, fp); | |
929 | break; | |
0ad21f68 AH |
930 | case PERF_RECORD_ITRACE_START: |
931 | ret += perf_event__fprintf_itrace_start(event, fp); | |
932 | break; | |
0286039f AH |
933 | case PERF_RECORD_SWITCH: |
934 | case PERF_RECORD_SWITCH_CPU_WIDE: | |
935 | ret += perf_event__fprintf_switch(event, fp); | |
936 | break; | |
482ad897 ACM |
937 | default: |
938 | ret += fprintf(fp, "\n"); | |
939 | } | |
940 | ||
941 | return ret; | |
942 | } | |
943 | ||
b0a7d1a0 ACM |
944 | int perf_event__process(struct perf_tool *tool __maybe_unused, |
945 | union perf_event *event, | |
162f0bef | 946 | struct perf_sample *sample, |
b0a7d1a0 | 947 | struct machine *machine) |
b83f920e | 948 | { |
162f0bef | 949 | return machine__process_event(machine, event, sample); |
b83f920e SD |
950 | } |
951 | ||
bb871a9c | 952 | void thread__find_addr_map(struct thread *thread, u8 cpumode, |
743eb868 | 953 | enum map_type type, u64 addr, |
326f59bf | 954 | struct addr_location *al) |
1ed091c4 | 955 | { |
93d5731d | 956 | struct map_groups *mg = thread->mg; |
bb871a9c | 957 | struct machine *machine = mg->machine; |
5b7ba82a | 958 | bool load_map = false; |
1ed091c4 | 959 | |
cc22e575 | 960 | al->machine = machine; |
316c7136 | 961 | al->thread = thread; |
1ed091c4 | 962 | al->addr = addr; |
a1645ce1 | 963 | al->cpumode = cpumode; |
b3cef7f6 | 964 | al->filtered = 0; |
1ed091c4 | 965 | |
743eb868 ACM |
966 | if (machine == NULL) { |
967 | al->map = NULL; | |
968 | return; | |
969 | } | |
970 | ||
a1645ce1 | 971 | if (cpumode == PERF_RECORD_MISC_KERNEL && perf_host) { |
1ed091c4 | 972 | al->level = 'k'; |
23346f21 | 973 | mg = &machine->kmaps; |
5b7ba82a | 974 | load_map = true; |
a1645ce1 | 975 | } else if (cpumode == PERF_RECORD_MISC_USER && perf_host) { |
1ed091c4 | 976 | al->level = '.'; |
a1645ce1 ZY |
977 | } else if (cpumode == PERF_RECORD_MISC_GUEST_KERNEL && perf_guest) { |
978 | al->level = 'g'; | |
23346f21 | 979 | mg = &machine->kmaps; |
5b7ba82a | 980 | load_map = true; |
fb50bb43 DY |
981 | } else if (cpumode == PERF_RECORD_MISC_GUEST_USER && perf_guest) { |
982 | al->level = 'u'; | |
a1645ce1 | 983 | } else { |
fb50bb43 | 984 | al->level = 'H'; |
1ed091c4 | 985 | al->map = NULL; |
a1645ce1 ZY |
986 | |
987 | if ((cpumode == PERF_RECORD_MISC_GUEST_USER || | |
988 | cpumode == PERF_RECORD_MISC_GUEST_KERNEL) && | |
989 | !perf_guest) | |
b3cef7f6 | 990 | al->filtered |= (1 << HIST_FILTER__GUEST); |
a1645ce1 ZY |
991 | if ((cpumode == PERF_RECORD_MISC_USER || |
992 | cpumode == PERF_RECORD_MISC_KERNEL) && | |
993 | !perf_host) | |
b3cef7f6 | 994 | al->filtered |= (1 << HIST_FILTER__HOST); |
a1645ce1 | 995 | |
1ed091c4 ACM |
996 | return; |
997 | } | |
998 | try_again: | |
9958e1f0 | 999 | al->map = map_groups__find(mg, type, al->addr); |
1ed091c4 ACM |
1000 | if (al->map == NULL) { |
1001 | /* | |
1002 | * If this is outside of all known maps, and is a negative | |
1003 | * address, try to look it up in the kernel dso, as it might be | |
1004 | * a vsyscall or vdso (which executes in user-mode). | |
1005 | * | |
1006 | * XXX This is nasty, we should have a symbol list in the | |
1007 | * "[vdso]" dso, but for now lets use the old trick of looking | |
1008 | * in the whole kernel symbol list. | |
1009 | */ | |
fbe2af45 AH |
1010 | if (cpumode == PERF_RECORD_MISC_USER && machine && |
1011 | mg != &machine->kmaps && | |
1012 | machine__kernel_ip(machine, al->addr)) { | |
23346f21 | 1013 | mg = &machine->kmaps; |
1f2a7069 | 1014 | load_map = true; |
1ed091c4 ACM |
1015 | goto try_again; |
1016 | } | |
5b7ba82a AH |
1017 | } else { |
1018 | /* | |
1019 | * Kernel maps might be changed when loading symbols so loading | |
1020 | * must be done prior to using kernel maps. | |
1021 | */ | |
1022 | if (load_map) | |
326f59bf | 1023 | map__load(al->map, machine->symbol_filter); |
1ed091c4 | 1024 | al->addr = al->map->map_ip(al->map, al->addr); |
5b7ba82a | 1025 | } |
59ee68ec ACM |
1026 | } |
1027 | ||
bb871a9c | 1028 | void thread__find_addr_location(struct thread *thread, |
743eb868 | 1029 | u8 cpumode, enum map_type type, u64 addr, |
61710bde | 1030 | struct addr_location *al) |
59ee68ec | 1031 | { |
bb871a9c | 1032 | thread__find_addr_map(thread, cpumode, type, addr, al); |
59ee68ec | 1033 | if (al->map != NULL) |
61710bde | 1034 | al->sym = map__find_symbol(al->map, al->addr, |
bb871a9c | 1035 | thread->mg->machine->symbol_filter); |
59ee68ec ACM |
1036 | else |
1037 | al->sym = NULL; | |
1ed091c4 ACM |
1038 | } |
1039 | ||
b91fc39f ACM |
1040 | /* |
1041 | * Callers need to drop the reference to al->thread, obtained in | |
1042 | * machine__findnew_thread() | |
1043 | */ | |
8115d60c | 1044 | int perf_event__preprocess_sample(const union perf_event *event, |
743eb868 | 1045 | struct machine *machine, |
8115d60c | 1046 | struct addr_location *al, |
e44baa3e | 1047 | struct perf_sample *sample) |
1ed091c4 | 1048 | { |
8115d60c | 1049 | u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; |
ef89325f | 1050 | struct thread *thread = machine__findnew_thread(machine, sample->pid, |
13ce34df | 1051 | sample->tid); |
41a37e20 | 1052 | |
1ed091c4 ACM |
1053 | if (thread == NULL) |
1054 | return -1; | |
1055 | ||
b9c5143a | 1056 | dump_printf(" ... thread: %s:%d\n", thread__comm_str(thread), thread->tid); |
1f626bc3 | 1057 | /* |
743eb868 | 1058 | * Have we already created the kernel maps for this machine? |
1f626bc3 ACM |
1059 | * |
1060 | * This should have happened earlier, when we processed the kernel MMAP | |
1061 | * events, but for older perf.data files there was no such thing, so do | |
1062 | * it now. | |
1063 | */ | |
1064 | if (cpumode == PERF_RECORD_MISC_KERNEL && | |
a5e813c6 | 1065 | machine__kernel_map(machine) == NULL) |
743eb868 | 1066 | machine__create_kernel_maps(machine); |
1ed091c4 | 1067 | |
bb871a9c | 1068 | thread__find_addr_map(thread, cpumode, MAP__FUNCTION, sample->ip, al); |
1ed091c4 ACM |
1069 | dump_printf(" ...... dso: %s\n", |
1070 | al->map ? al->map->dso->long_name : | |
1071 | al->level == 'H' ? "[hypervisor]" : "<not found>"); | |
466fa764 NK |
1072 | |
1073 | if (thread__is_filtered(thread)) | |
1074 | al->filtered |= (1 << HIST_FILTER__THREAD); | |
1075 | ||
96415e4d | 1076 | al->sym = NULL; |
8d50e5b4 | 1077 | al->cpu = sample->cpu; |
0c4c4deb KL |
1078 | al->socket = -1; |
1079 | ||
1080 | if (al->cpu >= 0) { | |
1081 | struct perf_env *env = machine->env; | |
1082 | ||
1083 | if (env && env->cpu) | |
1084 | al->socket = env->cpu[al->cpu].socket_id; | |
1085 | } | |
96415e4d ACM |
1086 | |
1087 | if (al->map) { | |
cb8f4e9a NK |
1088 | struct dso *dso = al->map->dso; |
1089 | ||
96415e4d | 1090 | if (symbol_conf.dso_list && |
cb8f4e9a NK |
1091 | (!dso || !(strlist__has_entry(symbol_conf.dso_list, |
1092 | dso->short_name) || | |
1093 | (dso->short_name != dso->long_name && | |
1094 | strlist__has_entry(symbol_conf.dso_list, | |
b3cef7f6 NK |
1095 | dso->long_name))))) { |
1096 | al->filtered |= (1 << HIST_FILTER__DSO); | |
b3cef7f6 | 1097 | } |
96415e4d | 1098 | |
e44baa3e AH |
1099 | al->sym = map__find_symbol(al->map, al->addr, |
1100 | machine->symbol_filter); | |
96415e4d | 1101 | } |
c410a338 | 1102 | |
1500b93b FT |
1103 | if (symbol_conf.sym_list && |
1104 | (!al->sym || !strlist__has_entry(symbol_conf.sym_list, | |
b3cef7f6 NK |
1105 | al->sym->name))) { |
1106 | al->filtered |= (1 << HIST_FILTER__SYMBOL); | |
b3cef7f6 | 1107 | } |
c410a338 | 1108 | |
c410a338 | 1109 | return 0; |
1ed091c4 | 1110 | } |
9b0d2d87 | 1111 | |
b91fc39f ACM |
1112 | /* |
1113 | * The preprocess_sample method will return with reference counts for the | |
1114 | * in it, when done using (and perhaps getting ref counts if needing to | |
1115 | * keep a pointer to one of those entries) it must be paired with | |
1116 | * addr_location__put(), so that the refcounts can be decremented. | |
1117 | */ | |
1118 | void addr_location__put(struct addr_location *al) | |
1119 | { | |
1120 | thread__zput(al->thread); | |
1121 | } | |
1122 | ||
9b0d2d87 AH |
1123 | bool is_bts_event(struct perf_event_attr *attr) |
1124 | { | |
1125 | return attr->type == PERF_TYPE_HARDWARE && | |
1126 | (attr->config & PERF_COUNT_HW_BRANCH_INSTRUCTIONS) && | |
1127 | attr->sample_period == 1; | |
1128 | } | |
1129 | ||
1130 | bool sample_addr_correlates_sym(struct perf_event_attr *attr) | |
1131 | { | |
1132 | if (attr->type == PERF_TYPE_SOFTWARE && | |
1133 | (attr->config == PERF_COUNT_SW_PAGE_FAULTS || | |
1134 | attr->config == PERF_COUNT_SW_PAGE_FAULTS_MIN || | |
1135 | attr->config == PERF_COUNT_SW_PAGE_FAULTS_MAJ)) | |
1136 | return true; | |
1137 | ||
1138 | if (is_bts_event(attr)) | |
1139 | return true; | |
1140 | ||
1141 | return false; | |
1142 | } | |
1143 | ||
1144 | void perf_event__preprocess_sample_addr(union perf_event *event, | |
1145 | struct perf_sample *sample, | |
9b0d2d87 AH |
1146 | struct thread *thread, |
1147 | struct addr_location *al) | |
1148 | { | |
1149 | u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; | |
1150 | ||
bb871a9c | 1151 | thread__find_addr_map(thread, cpumode, MAP__FUNCTION, sample->addr, al); |
9b0d2d87 | 1152 | if (!al->map) |
bb871a9c | 1153 | thread__find_addr_map(thread, cpumode, MAP__VARIABLE, |
9b0d2d87 AH |
1154 | sample->addr, al); |
1155 | ||
1156 | al->cpu = sample->cpu; | |
1157 | al->sym = NULL; | |
1158 | ||
1159 | if (al->map) | |
1160 | al->sym = map__find_symbol(al->map, al->addr, NULL); | |
1161 | } |