Commit | Line | Data |
---|---|---|
234fbbf5 ACM |
1 | #include <linux/types.h> |
2 | #include "event.h" | |
3 | #include "debug.h" | |
ec913369 | 4 | #include "session.h" |
c410a338 | 5 | #include "sort.h" |
234fbbf5 | 6 | #include "string.h" |
c410a338 | 7 | #include "strlist.h" |
62daacb5 | 8 | #include "thread.h" |
234fbbf5 | 9 | |
c8446b9b ACM |
10 | const char *event__name[] = { |
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 | }; | |
26 | ||
234fbbf5 | 27 | static pid_t event__synthesize_comm(pid_t pid, int full, |
cf553114 | 28 | event__handler_t process, |
d8f66248 | 29 | struct perf_session *session) |
234fbbf5 ACM |
30 | { |
31 | event_t ev; | |
32 | char filename[PATH_MAX]; | |
33 | char bf[BUFSIZ]; | |
34 | FILE *fp; | |
35 | size_t size = 0; | |
36 | DIR *tasks; | |
37 | struct dirent dirent, *next; | |
38 | pid_t tgid = 0; | |
39 | ||
40 | snprintf(filename, sizeof(filename), "/proc/%d/status", pid); | |
41 | ||
42 | fp = fopen(filename, "r"); | |
43 | if (fp == NULL) { | |
44 | out_race: | |
45 | /* | |
46 | * We raced with a task exiting - just return: | |
47 | */ | |
48 | pr_debug("couldn't open %s\n", filename); | |
49 | return 0; | |
50 | } | |
51 | ||
52 | memset(&ev.comm, 0, sizeof(ev.comm)); | |
53 | while (!ev.comm.comm[0] || !ev.comm.pid) { | |
54 | if (fgets(bf, sizeof(bf), fp) == NULL) | |
55 | goto out_failure; | |
56 | ||
57 | if (memcmp(bf, "Name:", 5) == 0) { | |
58 | char *name = bf + 5; | |
59 | while (*name && isspace(*name)) | |
60 | ++name; | |
61 | size = strlen(name) - 1; | |
62 | memcpy(ev.comm.comm, name, size++); | |
63 | } else if (memcmp(bf, "Tgid:", 5) == 0) { | |
64 | char *tgids = bf + 5; | |
65 | while (*tgids && isspace(*tgids)) | |
66 | ++tgids; | |
67 | tgid = ev.comm.pid = atoi(tgids); | |
68 | } | |
69 | } | |
70 | ||
71 | ev.comm.header.type = PERF_RECORD_COMM; | |
72 | size = ALIGN(size, sizeof(u64)); | |
73 | ev.comm.header.size = sizeof(ev.comm) - (sizeof(ev.comm.comm) - size); | |
74 | ||
75 | if (!full) { | |
76 | ev.comm.tid = pid; | |
77 | ||
d8f66248 | 78 | process(&ev, session); |
234fbbf5 ACM |
79 | goto out_fclose; |
80 | } | |
81 | ||
82 | snprintf(filename, sizeof(filename), "/proc/%d/task", pid); | |
83 | ||
84 | tasks = opendir(filename); | |
85 | if (tasks == NULL) | |
86 | goto out_race; | |
87 | ||
88 | while (!readdir_r(tasks, &dirent, &next) && next) { | |
89 | char *end; | |
90 | pid = strtol(dirent.d_name, &end, 10); | |
91 | if (*end) | |
92 | continue; | |
93 | ||
94 | ev.comm.tid = pid; | |
95 | ||
d8f66248 | 96 | process(&ev, session); |
234fbbf5 ACM |
97 | } |
98 | closedir(tasks); | |
99 | ||
100 | out_fclose: | |
101 | fclose(fp); | |
102 | return tgid; | |
103 | ||
104 | out_failure: | |
105 | pr_warning("couldn't get COMM and pgid, malformed %s\n", filename); | |
106 | return -1; | |
107 | } | |
108 | ||
109 | static int event__synthesize_mmap_events(pid_t pid, pid_t tgid, | |
cf553114 | 110 | event__handler_t process, |
d8f66248 | 111 | struct perf_session *session) |
234fbbf5 ACM |
112 | { |
113 | char filename[PATH_MAX]; | |
114 | FILE *fp; | |
115 | ||
116 | snprintf(filename, sizeof(filename), "/proc/%d/maps", pid); | |
117 | ||
118 | fp = fopen(filename, "r"); | |
119 | if (fp == NULL) { | |
120 | /* | |
121 | * We raced with a task exiting - just return: | |
122 | */ | |
123 | pr_debug("couldn't open %s\n", filename); | |
124 | return -1; | |
125 | } | |
126 | ||
127 | while (1) { | |
128 | char bf[BUFSIZ], *pbf = bf; | |
129 | event_t ev = { | |
18c3daa4 ACM |
130 | .header = { |
131 | .type = PERF_RECORD_MMAP, | |
a1645ce1 ZY |
132 | /* |
133 | * Just like the kernel, see __perf_event_mmap | |
134 | * in kernel/perf_event.c | |
135 | */ | |
136 | .misc = PERF_RECORD_MISC_USER, | |
18c3daa4 | 137 | }, |
234fbbf5 ACM |
138 | }; |
139 | int n; | |
140 | size_t size; | |
141 | if (fgets(bf, sizeof(bf), fp) == NULL) | |
142 | break; | |
143 | ||
144 | /* 00400000-0040c000 r-xp 00000000 fd:01 41038 /bin/cat */ | |
145 | n = hex2u64(pbf, &ev.mmap.start); | |
146 | if (n < 0) | |
147 | continue; | |
148 | pbf += n + 1; | |
149 | n = hex2u64(pbf, &ev.mmap.len); | |
150 | if (n < 0) | |
151 | continue; | |
152 | pbf += n + 3; | |
153 | if (*pbf == 'x') { /* vm_exec */ | |
154 | char *execname = strchr(bf, '/'); | |
155 | ||
156 | /* Catch VDSO */ | |
157 | if (execname == NULL) | |
158 | execname = strstr(bf, "[vdso]"); | |
159 | ||
160 | if (execname == NULL) | |
161 | continue; | |
162 | ||
4af8b35d | 163 | pbf += 3; |
b5a63254 | 164 | n = hex2u64(pbf, &ev.mmap.pgoff); |
4af8b35d | 165 | |
234fbbf5 ACM |
166 | size = strlen(execname); |
167 | execname[size - 1] = '\0'; /* Remove \n */ | |
168 | memcpy(ev.mmap.filename, execname, size); | |
169 | size = ALIGN(size, sizeof(u64)); | |
170 | ev.mmap.len -= ev.mmap.start; | |
171 | ev.mmap.header.size = (sizeof(ev.mmap) - | |
172 | (sizeof(ev.mmap.filename) - size)); | |
173 | ev.mmap.pid = tgid; | |
174 | ev.mmap.tid = pid; | |
175 | ||
d8f66248 | 176 | process(&ev, session); |
234fbbf5 ACM |
177 | } |
178 | } | |
179 | ||
180 | fclose(fp); | |
181 | return 0; | |
182 | } | |
183 | ||
b7cece76 | 184 | int event__synthesize_modules(event__handler_t process, |
a1645ce1 | 185 | struct perf_session *session, |
23346f21 | 186 | struct machine *machine) |
b7cece76 ACM |
187 | { |
188 | struct rb_node *nd; | |
23346f21 | 189 | struct map_groups *kmaps = &machine->kmaps; |
a1645ce1 | 190 | u16 misc; |
b7cece76 | 191 | |
a1645ce1 ZY |
192 | /* |
193 | * kernel uses 0 for user space maps, see kernel/perf_event.c | |
194 | * __perf_event_mmap | |
195 | */ | |
23346f21 | 196 | if (machine__is_host(machine)) |
a1645ce1 ZY |
197 | misc = PERF_RECORD_MISC_KERNEL; |
198 | else | |
199 | misc = PERF_RECORD_MISC_GUEST_KERNEL; | |
200 | ||
201 | for (nd = rb_first(&kmaps->maps[MAP__FUNCTION]); | |
b7cece76 ACM |
202 | nd; nd = rb_next(nd)) { |
203 | event_t ev; | |
204 | size_t size; | |
205 | struct map *pos = rb_entry(nd, struct map, rb_node); | |
206 | ||
207 | if (pos->dso->kernel) | |
208 | continue; | |
209 | ||
210 | size = ALIGN(pos->dso->long_name_len + 1, sizeof(u64)); | |
211 | memset(&ev, 0, sizeof(ev)); | |
a1645ce1 | 212 | ev.mmap.header.misc = misc; |
b7cece76 ACM |
213 | ev.mmap.header.type = PERF_RECORD_MMAP; |
214 | ev.mmap.header.size = (sizeof(ev.mmap) - | |
215 | (sizeof(ev.mmap.filename) - size)); | |
216 | ev.mmap.start = pos->start; | |
217 | ev.mmap.len = pos->end - pos->start; | |
23346f21 | 218 | ev.mmap.pid = machine->pid; |
b7cece76 ACM |
219 | |
220 | memcpy(ev.mmap.filename, pos->dso->long_name, | |
221 | pos->dso->long_name_len + 1); | |
222 | process(&ev, session); | |
223 | } | |
224 | ||
225 | return 0; | |
226 | } | |
227 | ||
cf553114 | 228 | int event__synthesize_thread(pid_t pid, event__handler_t process, |
d8f66248 | 229 | struct perf_session *session) |
234fbbf5 | 230 | { |
d8f66248 | 231 | pid_t tgid = event__synthesize_comm(pid, 1, process, session); |
234fbbf5 ACM |
232 | if (tgid == -1) |
233 | return -1; | |
d8f66248 | 234 | return event__synthesize_mmap_events(pid, tgid, process, session); |
234fbbf5 ACM |
235 | } |
236 | ||
cf553114 | 237 | void event__synthesize_threads(event__handler_t process, |
d8f66248 | 238 | struct perf_session *session) |
234fbbf5 ACM |
239 | { |
240 | DIR *proc; | |
241 | struct dirent dirent, *next; | |
242 | ||
243 | proc = opendir("/proc"); | |
244 | ||
245 | while (!readdir_r(proc, &dirent, &next) && next) { | |
246 | char *end; | |
247 | pid_t pid = strtol(dirent.d_name, &end, 10); | |
248 | ||
249 | if (*end) /* only interested in proper numerical dirents */ | |
250 | continue; | |
251 | ||
d8f66248 | 252 | event__synthesize_thread(pid, process, session); |
234fbbf5 ACM |
253 | } |
254 | ||
255 | closedir(proc); | |
256 | } | |
62daacb5 | 257 | |
56b03f3c ACM |
258 | struct process_symbol_args { |
259 | const char *name; | |
260 | u64 start; | |
261 | }; | |
262 | ||
263 | static int find_symbol_cb(void *arg, const char *name, char type, u64 start) | |
264 | { | |
265 | struct process_symbol_args *args = arg; | |
266 | ||
881516eb ACM |
267 | /* |
268 | * Must be a function or at least an alias, as in PARISC64, where "_text" is | |
269 | * an 'A' to the same address as "_stext". | |
270 | */ | |
271 | if (!(symbol_type__is_a(type, MAP__FUNCTION) || | |
272 | type == 'A') || strcmp(name, args->name)) | |
56b03f3c ACM |
273 | return 0; |
274 | ||
275 | args->start = start; | |
276 | return 1; | |
277 | } | |
278 | ||
cf553114 | 279 | int event__synthesize_kernel_mmap(event__handler_t process, |
56b03f3c | 280 | struct perf_session *session, |
23346f21 | 281 | struct machine *machine, |
56b03f3c ACM |
282 | const char *symbol_name) |
283 | { | |
284 | size_t size; | |
a1645ce1 ZY |
285 | const char *filename, *mmap_name; |
286 | char path[PATH_MAX]; | |
287 | char name_buff[PATH_MAX]; | |
288 | struct map *map; | |
289 | ||
56b03f3c | 290 | event_t ev = { |
18c3daa4 ACM |
291 | .header = { |
292 | .type = PERF_RECORD_MMAP, | |
18c3daa4 | 293 | }, |
56b03f3c ACM |
294 | }; |
295 | /* | |
296 | * We should get this from /sys/kernel/sections/.text, but till that is | |
297 | * available use this, and after it is use this as a fallback for older | |
298 | * kernels. | |
299 | */ | |
300 | struct process_symbol_args args = { .name = symbol_name, }; | |
301 | ||
48ea8f54 | 302 | mmap_name = machine__mmap_name(machine, name_buff, sizeof(name_buff)); |
23346f21 | 303 | if (machine__is_host(machine)) { |
a1645ce1 ZY |
304 | /* |
305 | * kernel uses PERF_RECORD_MISC_USER for user space maps, | |
306 | * see kernel/perf_event.c __perf_event_mmap | |
307 | */ | |
308 | ev.header.misc = PERF_RECORD_MISC_KERNEL; | |
309 | filename = "/proc/kallsyms"; | |
310 | } else { | |
311 | ev.header.misc = PERF_RECORD_MISC_GUEST_KERNEL; | |
23346f21 | 312 | if (machine__is_default_guest(machine)) |
a1645ce1 ZY |
313 | filename = (char *) symbol_conf.default_guest_kallsyms; |
314 | else { | |
23346f21 | 315 | sprintf(path, "%s/proc/kallsyms", machine->root_dir); |
a1645ce1 ZY |
316 | filename = path; |
317 | } | |
318 | } | |
319 | ||
320 | if (kallsyms__parse(filename, &args, find_symbol_cb) <= 0) | |
56b03f3c ACM |
321 | return -ENOENT; |
322 | ||
23346f21 | 323 | map = machine->vmlinux_maps[MAP__FUNCTION]; |
56b03f3c | 324 | size = snprintf(ev.mmap.filename, sizeof(ev.mmap.filename), |
a1645ce1 | 325 | "%s%s", mmap_name, symbol_name) + 1; |
56b03f3c | 326 | size = ALIGN(size, sizeof(u64)); |
a1645ce1 ZY |
327 | ev.mmap.header.size = (sizeof(ev.mmap) - |
328 | (sizeof(ev.mmap.filename) - size)); | |
b7cece76 | 329 | ev.mmap.pgoff = args.start; |
a1645ce1 ZY |
330 | ev.mmap.start = map->start; |
331 | ev.mmap.len = map->end - ev.mmap.start; | |
23346f21 | 332 | ev.mmap.pid = machine->pid; |
56b03f3c ACM |
333 | |
334 | return process(&ev, session); | |
335 | } | |
336 | ||
8a6c5b26 | 337 | static void thread__comm_adjust(struct thread *self, struct hists *hists) |
d599db3f ACM |
338 | { |
339 | char *comm = self->comm; | |
340 | ||
341 | if (!symbol_conf.col_width_list_str && !symbol_conf.field_sep && | |
342 | (!symbol_conf.comm_list || | |
343 | strlist__has_entry(symbol_conf.comm_list, comm))) { | |
8a6c5b26 | 344 | u16 slen = strlen(comm); |
d599db3f | 345 | |
8a6c5b26 ACM |
346 | if (hists__new_col_len(hists, HISTC_COMM, slen)) |
347 | hists__set_col_len(hists, HISTC_THREAD, slen + 6); | |
d599db3f ACM |
348 | } |
349 | } | |
350 | ||
8a6c5b26 ACM |
351 | static int thread__set_comm_adjust(struct thread *self, const char *comm, |
352 | struct hists *hists) | |
d599db3f ACM |
353 | { |
354 | int ret = thread__set_comm(self, comm); | |
355 | ||
356 | if (ret) | |
357 | return ret; | |
358 | ||
8a6c5b26 | 359 | thread__comm_adjust(self, hists); |
d599db3f ACM |
360 | |
361 | return 0; | |
362 | } | |
363 | ||
b3165f41 | 364 | int event__process_comm(event_t *self, struct perf_session *session) |
62daacb5 | 365 | { |
13eb04fd | 366 | struct thread *thread = perf_session__findnew(session, self->comm.tid); |
62daacb5 | 367 | |
13eb04fd | 368 | dump_printf(": %s:%d\n", self->comm.comm, self->comm.tid); |
62daacb5 | 369 | |
8a6c5b26 ACM |
370 | if (thread == NULL || thread__set_comm_adjust(thread, self->comm.comm, |
371 | &session->hists)) { | |
62daacb5 ACM |
372 | dump_printf("problem processing PERF_RECORD_COMM, skipping event.\n"); |
373 | return -1; | |
374 | } | |
375 | ||
376 | return 0; | |
377 | } | |
378 | ||
f823e441 | 379 | int event__process_lost(event_t *self, struct perf_session *session) |
62daacb5 ACM |
380 | { |
381 | dump_printf(": id:%Ld: lost:%Ld\n", self->lost.id, self->lost.lost); | |
cee75ac7 | 382 | session->hists.stats.total_lost += self->lost.lost; |
62daacb5 ACM |
383 | return 0; |
384 | } | |
385 | ||
a1645ce1 ZY |
386 | static void event_set_kernel_mmap_len(struct map **maps, event_t *self) |
387 | { | |
388 | maps[MAP__FUNCTION]->start = self->mmap.start; | |
389 | maps[MAP__FUNCTION]->end = self->mmap.start + self->mmap.len; | |
390 | /* | |
391 | * Be a bit paranoid here, some perf.data file came with | |
392 | * a zero sized synthesized MMAP event for the kernel. | |
393 | */ | |
394 | if (maps[MAP__FUNCTION]->end == 0) | |
9d1faba5 | 395 | maps[MAP__FUNCTION]->end = ~0ULL; |
a1645ce1 ZY |
396 | } |
397 | ||
398 | static int event__process_kernel_mmap(event_t *self, | |
399 | struct perf_session *session) | |
62daacb5 | 400 | { |
56b03f3c | 401 | struct map *map; |
a1645ce1 | 402 | char kmmap_prefix[PATH_MAX]; |
23346f21 | 403 | struct machine *machine; |
a1645ce1 ZY |
404 | enum dso_kernel_type kernel_type; |
405 | bool is_kernel_mmap; | |
406 | ||
23346f21 ACM |
407 | machine = perf_session__findnew_machine(session, self->mmap.pid); |
408 | if (!machine) { | |
409 | pr_err("Can't find id %d's machine\n", self->mmap.pid); | |
a1645ce1 ZY |
410 | goto out_problem; |
411 | } | |
62daacb5 | 412 | |
48ea8f54 | 413 | machine__mmap_name(machine, kmmap_prefix, sizeof(kmmap_prefix)); |
23346f21 | 414 | if (machine__is_host(machine)) |
a1645ce1 ZY |
415 | kernel_type = DSO_TYPE_KERNEL; |
416 | else | |
417 | kernel_type = DSO_TYPE_GUEST_KERNEL; | |
62daacb5 | 418 | |
a1645ce1 ZY |
419 | is_kernel_mmap = memcmp(self->mmap.filename, |
420 | kmmap_prefix, | |
421 | strlen(kmmap_prefix)) == 0; | |
422 | if (self->mmap.filename[0] == '/' || | |
423 | (!is_kernel_mmap && self->mmap.filename[0] == '[')) { | |
b7cece76 | 424 | |
a1645ce1 ZY |
425 | char short_module_name[1024]; |
426 | char *name, *dot; | |
b7cece76 | 427 | |
a1645ce1 ZY |
428 | if (self->mmap.filename[0] == '/') { |
429 | name = strrchr(self->mmap.filename, '/'); | |
b7cece76 ACM |
430 | if (name == NULL) |
431 | goto out_problem; | |
432 | ||
433 | ++name; /* skip / */ | |
434 | dot = strrchr(name, '.'); | |
435 | if (dot == NULL) | |
436 | goto out_problem; | |
b7cece76 | 437 | snprintf(short_module_name, sizeof(short_module_name), |
a1645ce1 | 438 | "[%.*s]", (int)(dot - name), name); |
b7cece76 | 439 | strxfrchar(short_module_name, '-', '_'); |
a1645ce1 ZY |
440 | } else |
441 | strcpy(short_module_name, self->mmap.filename); | |
442 | ||
d28c6223 ACM |
443 | map = machine__new_module(machine, self->mmap.start, |
444 | self->mmap.filename); | |
a1645ce1 ZY |
445 | if (map == NULL) |
446 | goto out_problem; | |
447 | ||
448 | name = strdup(short_module_name); | |
449 | if (name == NULL) | |
450 | goto out_problem; | |
451 | ||
452 | map->dso->short_name = name; | |
6e406257 | 453 | map->dso->sname_alloc = 1; |
a1645ce1 ZY |
454 | map->end = map->start + self->mmap.len; |
455 | } else if (is_kernel_mmap) { | |
456 | const char *symbol_name = (self->mmap.filename + | |
457 | strlen(kmmap_prefix)); | |
458 | /* | |
459 | * Should be there already, from the build-id table in | |
460 | * the header. | |
461 | */ | |
23346f21 ACM |
462 | struct dso *kernel = __dsos__findnew(&machine->kernel_dsos, |
463 | kmmap_prefix); | |
a1645ce1 ZY |
464 | if (kernel == NULL) |
465 | goto out_problem; | |
466 | ||
467 | kernel->kernel = kernel_type; | |
d28c6223 | 468 | if (__machine__create_kernel_maps(machine, kernel) < 0) |
a1645ce1 ZY |
469 | goto out_problem; |
470 | ||
23346f21 ACM |
471 | event_set_kernel_mmap_len(machine->vmlinux_maps, self); |
472 | perf_session__set_kallsyms_ref_reloc_sym(machine->vmlinux_maps, | |
473 | symbol_name, | |
474 | self->mmap.pgoff); | |
475 | if (machine__is_default_guest(machine)) { | |
b7cece76 | 476 | /* |
a1645ce1 | 477 | * preload dso of guest kernel and modules |
b7cece76 | 478 | */ |
23346f21 ACM |
479 | dso__load(kernel, machine->vmlinux_maps[MAP__FUNCTION], |
480 | NULL); | |
a1645ce1 ZY |
481 | } |
482 | } | |
483 | return 0; | |
484 | out_problem: | |
485 | return -1; | |
486 | } | |
b7cece76 | 487 | |
a1645ce1 ZY |
488 | int event__process_mmap(event_t *self, struct perf_session *session) |
489 | { | |
23346f21 | 490 | struct machine *machine; |
a1645ce1 ZY |
491 | struct thread *thread; |
492 | struct map *map; | |
493 | u8 cpumode = self->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; | |
494 | int ret = 0; | |
b7cece76 | 495 | |
a1645ce1 ZY |
496 | dump_printf(" %d/%d: [%#Lx(%#Lx) @ %#Lx]: %s\n", |
497 | self->mmap.pid, self->mmap.tid, self->mmap.start, | |
498 | self->mmap.len, self->mmap.pgoff, self->mmap.filename); | |
499 | ||
500 | if (cpumode == PERF_RECORD_MISC_GUEST_KERNEL || | |
501 | cpumode == PERF_RECORD_MISC_KERNEL) { | |
502 | ret = event__process_kernel_mmap(self, session); | |
503 | if (ret < 0) | |
504 | goto out_problem; | |
56b03f3c ACM |
505 | return 0; |
506 | } | |
507 | ||
23346f21 | 508 | machine = perf_session__find_host_machine(session); |
4cc49458 ACM |
509 | if (machine == NULL) |
510 | goto out_problem; | |
511 | thread = perf_session__findnew(session, self->mmap.pid); | |
d65a458b ACM |
512 | if (thread == NULL) |
513 | goto out_problem; | |
23346f21 | 514 | map = map__new(&machine->user_dsos, self->mmap.start, |
a1645ce1 ZY |
515 | self->mmap.len, self->mmap.pgoff, |
516 | self->mmap.pid, self->mmap.filename, | |
361d1346 | 517 | MAP__FUNCTION); |
d65a458b | 518 | if (map == NULL) |
b7cece76 ACM |
519 | goto out_problem; |
520 | ||
521 | thread__insert_map(thread, map); | |
522 | return 0; | |
62daacb5 | 523 | |
b7cece76 ACM |
524 | out_problem: |
525 | dump_printf("problem processing PERF_RECORD_MMAP, skipping event.\n"); | |
62daacb5 ACM |
526 | return 0; |
527 | } | |
528 | ||
b3165f41 | 529 | int event__process_task(event_t *self, struct perf_session *session) |
62daacb5 | 530 | { |
dd833d71 FW |
531 | struct thread *thread = perf_session__findnew(session, self->fork.tid); |
532 | struct thread *parent = perf_session__findnew(session, self->fork.ptid); | |
62daacb5 ACM |
533 | |
534 | dump_printf("(%d:%d):(%d:%d)\n", self->fork.pid, self->fork.tid, | |
535 | self->fork.ppid, self->fork.ptid); | |
62daacb5 | 536 | |
720a3aeb ACM |
537 | if (self->header.type == PERF_RECORD_EXIT) { |
538 | perf_session__remove_thread(session, thread); | |
62daacb5 | 539 | return 0; |
720a3aeb | 540 | } |
62daacb5 ACM |
541 | |
542 | if (thread == NULL || parent == NULL || | |
543 | thread__fork(thread, parent) < 0) { | |
544 | dump_printf("problem processing PERF_RECORD_FORK, skipping event.\n"); | |
545 | return -1; | |
546 | } | |
547 | ||
548 | return 0; | |
549 | } | |
1ed091c4 | 550 | |
b83f920e SD |
551 | int event__process(event_t *event, struct perf_session *session) |
552 | { | |
553 | switch (event->header.type) { | |
554 | case PERF_RECORD_COMM: | |
555 | event__process_comm(event, session); | |
556 | break; | |
557 | case PERF_RECORD_MMAP: | |
558 | event__process_mmap(event, session); | |
559 | break; | |
560 | case PERF_RECORD_FORK: | |
561 | case PERF_RECORD_EXIT: | |
562 | event__process_task(event, session); | |
563 | break; | |
564 | default: | |
565 | break; | |
566 | } | |
567 | ||
568 | return 0; | |
569 | } | |
570 | ||
59ee68ec ACM |
571 | void thread__find_addr_map(struct thread *self, |
572 | struct perf_session *session, u8 cpumode, | |
a1645ce1 | 573 | enum map_type type, pid_t pid, u64 addr, |
59ee68ec | 574 | struct addr_location *al) |
1ed091c4 | 575 | { |
9958e1f0 | 576 | struct map_groups *mg = &self->mg; |
23346f21 | 577 | struct machine *machine = NULL; |
1ed091c4 | 578 | |
9958e1f0 | 579 | al->thread = self; |
1ed091c4 | 580 | al->addr = addr; |
a1645ce1 ZY |
581 | al->cpumode = cpumode; |
582 | al->filtered = false; | |
1ed091c4 | 583 | |
a1645ce1 | 584 | if (cpumode == PERF_RECORD_MISC_KERNEL && perf_host) { |
1ed091c4 | 585 | al->level = 'k'; |
23346f21 | 586 | machine = perf_session__find_host_machine(session); |
4cc49458 ACM |
587 | if (machine == NULL) { |
588 | al->map = NULL; | |
589 | return; | |
590 | } | |
23346f21 | 591 | mg = &machine->kmaps; |
a1645ce1 | 592 | } else if (cpumode == PERF_RECORD_MISC_USER && perf_host) { |
1ed091c4 | 593 | al->level = '.'; |
23346f21 | 594 | machine = perf_session__find_host_machine(session); |
a1645ce1 ZY |
595 | } else if (cpumode == PERF_RECORD_MISC_GUEST_KERNEL && perf_guest) { |
596 | al->level = 'g'; | |
23346f21 | 597 | machine = perf_session__find_machine(session, pid); |
4cc49458 | 598 | if (machine == NULL) { |
a1645ce1 ZY |
599 | al->map = NULL; |
600 | return; | |
601 | } | |
23346f21 | 602 | mg = &machine->kmaps; |
a1645ce1 ZY |
603 | } else { |
604 | /* | |
605 | * 'u' means guest os user space. | |
606 | * TODO: We don't support guest user space. Might support late. | |
607 | */ | |
608 | if (cpumode == PERF_RECORD_MISC_GUEST_USER && perf_guest) | |
609 | al->level = 'u'; | |
610 | else | |
611 | al->level = 'H'; | |
1ed091c4 | 612 | al->map = NULL; |
a1645ce1 ZY |
613 | |
614 | if ((cpumode == PERF_RECORD_MISC_GUEST_USER || | |
615 | cpumode == PERF_RECORD_MISC_GUEST_KERNEL) && | |
616 | !perf_guest) | |
617 | al->filtered = true; | |
618 | if ((cpumode == PERF_RECORD_MISC_USER || | |
619 | cpumode == PERF_RECORD_MISC_KERNEL) && | |
620 | !perf_host) | |
621 | al->filtered = true; | |
622 | ||
1ed091c4 ACM |
623 | return; |
624 | } | |
625 | try_again: | |
9958e1f0 | 626 | al->map = map_groups__find(mg, type, al->addr); |
1ed091c4 ACM |
627 | if (al->map == NULL) { |
628 | /* | |
629 | * If this is outside of all known maps, and is a negative | |
630 | * address, try to look it up in the kernel dso, as it might be | |
631 | * a vsyscall or vdso (which executes in user-mode). | |
632 | * | |
633 | * XXX This is nasty, we should have a symbol list in the | |
634 | * "[vdso]" dso, but for now lets use the old trick of looking | |
635 | * in the whole kernel symbol list. | |
636 | */ | |
a1645ce1 | 637 | if ((long long)al->addr < 0 && |
23346f21 ACM |
638 | cpumode == PERF_RECORD_MISC_KERNEL && |
639 | machine && mg != &machine->kmaps) { | |
640 | mg = &machine->kmaps; | |
1ed091c4 ACM |
641 | goto try_again; |
642 | } | |
59ee68ec | 643 | } else |
1ed091c4 | 644 | al->addr = al->map->map_ip(al->map, al->addr); |
59ee68ec ACM |
645 | } |
646 | ||
647 | void thread__find_addr_location(struct thread *self, | |
648 | struct perf_session *session, u8 cpumode, | |
a1645ce1 | 649 | enum map_type type, pid_t pid, u64 addr, |
59ee68ec ACM |
650 | struct addr_location *al, |
651 | symbol_filter_t filter) | |
652 | { | |
a1645ce1 | 653 | thread__find_addr_map(self, session, cpumode, type, pid, addr, al); |
59ee68ec | 654 | if (al->map != NULL) |
9de89fe7 | 655 | al->sym = map__find_symbol(al->map, al->addr, filter); |
59ee68ec ACM |
656 | else |
657 | al->sym = NULL; | |
1ed091c4 ACM |
658 | } |
659 | ||
8a6c5b26 | 660 | static void dso__calc_col_width(struct dso *self, struct hists *hists) |
c410a338 ACM |
661 | { |
662 | if (!symbol_conf.col_width_list_str && !symbol_conf.field_sep && | |
663 | (!symbol_conf.dso_list || | |
664 | strlist__has_entry(symbol_conf.dso_list, self->name))) { | |
8a6c5b26 ACM |
665 | u16 slen = dso__name_len(self); |
666 | hists__new_col_len(hists, HISTC_DSO, slen); | |
c410a338 ACM |
667 | } |
668 | ||
669 | self->slen_calculated = 1; | |
670 | } | |
671 | ||
b3165f41 | 672 | int event__preprocess_sample(const event_t *self, struct perf_session *session, |
41a37e20 ACM |
673 | struct addr_location *al, struct sample_data *data, |
674 | symbol_filter_t filter) | |
1ed091c4 ACM |
675 | { |
676 | u8 cpumode = self->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; | |
41a37e20 ACM |
677 | struct thread *thread; |
678 | ||
679 | event__parse_sample(self, session->sample_type, data); | |
680 | ||
681 | dump_printf("(IP, %d): %d/%d: %#Lx period: %Ld cpu:%d\n", | |
682 | self->header.misc, data->pid, data->tid, data->ip, | |
683 | data->period, data->cpu); | |
684 | ||
685 | if (session->sample_type & PERF_SAMPLE_CALLCHAIN) { | |
686 | unsigned int i; | |
687 | ||
688 | dump_printf("... chain: nr:%Lu\n", data->callchain->nr); | |
1ed091c4 | 689 | |
41a37e20 ACM |
690 | if (!ip_callchain__valid(data->callchain, self)) { |
691 | pr_debug("call-chain problem with event, " | |
692 | "skipping it.\n"); | |
693 | goto out_filtered; | |
694 | } | |
695 | ||
696 | if (dump_trace) { | |
697 | for (i = 0; i < data->callchain->nr; i++) | |
698 | dump_printf("..... %2d: %016Lx\n", | |
699 | i, data->callchain->ips[i]); | |
700 | } | |
701 | } | |
702 | thread = perf_session__findnew(session, self->ip.pid); | |
1ed091c4 ACM |
703 | if (thread == NULL) |
704 | return -1; | |
705 | ||
c410a338 ACM |
706 | if (symbol_conf.comm_list && |
707 | !strlist__has_entry(symbol_conf.comm_list, thread->comm)) | |
708 | goto out_filtered; | |
709 | ||
1ed091c4 | 710 | dump_printf(" ... thread: %s:%d\n", thread->comm, thread->pid); |
1f626bc3 ACM |
711 | /* |
712 | * Have we already created the kernel maps for the host machine? | |
713 | * | |
714 | * This should have happened earlier, when we processed the kernel MMAP | |
715 | * events, but for older perf.data files there was no such thing, so do | |
716 | * it now. | |
717 | */ | |
718 | if (cpumode == PERF_RECORD_MISC_KERNEL && | |
719 | session->host_machine.vmlinux_maps[MAP__FUNCTION] == NULL) | |
720 | machine__create_kernel_maps(&session->host_machine); | |
1ed091c4 | 721 | |
96415e4d | 722 | thread__find_addr_map(thread, session, cpumode, MAP__FUNCTION, |
a1645ce1 | 723 | self->ip.pid, self->ip.ip, al); |
1ed091c4 ACM |
724 | dump_printf(" ...... dso: %s\n", |
725 | al->map ? al->map->dso->long_name : | |
726 | al->level == 'H' ? "[hypervisor]" : "<not found>"); | |
96415e4d | 727 | al->sym = NULL; |
f60f3593 | 728 | al->cpu = data->cpu; |
96415e4d ACM |
729 | |
730 | if (al->map) { | |
731 | if (symbol_conf.dso_list && | |
732 | (!al->map || !al->map->dso || | |
733 | !(strlist__has_entry(symbol_conf.dso_list, | |
734 | al->map->dso->short_name) || | |
735 | (al->map->dso->short_name != al->map->dso->long_name && | |
736 | strlist__has_entry(symbol_conf.dso_list, | |
737 | al->map->dso->long_name))))) | |
738 | goto out_filtered; | |
739 | /* | |
740 | * We have to do this here as we may have a dso with no symbol | |
741 | * hit that has a name longer than the ones with symbols | |
742 | * sampled. | |
743 | */ | |
744 | if (!sort_dso.elide && !al->map->dso->slen_calculated) | |
8a6c5b26 | 745 | dso__calc_col_width(al->map->dso, &session->hists); |
96415e4d ACM |
746 | |
747 | al->sym = map__find_symbol(al->map, al->addr, filter); | |
3ceb0d44 ACM |
748 | } else { |
749 | const unsigned int unresolved_col_width = BITS_PER_LONG / 4; | |
750 | ||
8a6c5b26 | 751 | if (hists__col_len(&session->hists, HISTC_DSO) < unresolved_col_width && |
3ceb0d44 ACM |
752 | !symbol_conf.col_width_list_str && !symbol_conf.field_sep && |
753 | !symbol_conf.dso_list) | |
8a6c5b26 ACM |
754 | hists__set_col_len(&session->hists, HISTC_DSO, |
755 | unresolved_col_width); | |
96415e4d | 756 | } |
c410a338 ACM |
757 | |
758 | if (symbol_conf.sym_list && al->sym && | |
759 | !strlist__has_entry(symbol_conf.sym_list, al->sym->name)) | |
760 | goto out_filtered; | |
761 | ||
c410a338 ACM |
762 | return 0; |
763 | ||
764 | out_filtered: | |
765 | al->filtered = true; | |
1ed091c4 ACM |
766 | return 0; |
767 | } | |
180f95e2 | 768 | |
41a37e20 | 769 | int event__parse_sample(const event_t *event, u64 type, struct sample_data *data) |
180f95e2 | 770 | { |
41a37e20 | 771 | const u64 *array = event->sample.array; |
180f95e2 OH |
772 | |
773 | if (type & PERF_SAMPLE_IP) { | |
774 | data->ip = event->ip.ip; | |
775 | array++; | |
776 | } | |
777 | ||
778 | if (type & PERF_SAMPLE_TID) { | |
779 | u32 *p = (u32 *)array; | |
780 | data->pid = p[0]; | |
781 | data->tid = p[1]; | |
782 | array++; | |
783 | } | |
784 | ||
785 | if (type & PERF_SAMPLE_TIME) { | |
786 | data->time = *array; | |
787 | array++; | |
788 | } | |
789 | ||
790 | if (type & PERF_SAMPLE_ADDR) { | |
791 | data->addr = *array; | |
792 | array++; | |
793 | } | |
794 | ||
02bf60aa | 795 | data->id = -1ULL; |
180f95e2 OH |
796 | if (type & PERF_SAMPLE_ID) { |
797 | data->id = *array; | |
798 | array++; | |
799 | } | |
800 | ||
801 | if (type & PERF_SAMPLE_STREAM_ID) { | |
802 | data->stream_id = *array; | |
803 | array++; | |
804 | } | |
805 | ||
806 | if (type & PERF_SAMPLE_CPU) { | |
807 | u32 *p = (u32 *)array; | |
808 | data->cpu = *p; | |
809 | array++; | |
761844b9 SE |
810 | } else |
811 | data->cpu = -1; | |
180f95e2 OH |
812 | |
813 | if (type & PERF_SAMPLE_PERIOD) { | |
814 | data->period = *array; | |
815 | array++; | |
816 | } | |
817 | ||
818 | if (type & PERF_SAMPLE_READ) { | |
819 | pr_debug("PERF_SAMPLE_READ is unsuported for now\n"); | |
820 | return -1; | |
821 | } | |
822 | ||
823 | if (type & PERF_SAMPLE_CALLCHAIN) { | |
824 | data->callchain = (struct ip_callchain *)array; | |
825 | array += 1 + data->callchain->nr; | |
826 | } | |
827 | ||
828 | if (type & PERF_SAMPLE_RAW) { | |
829 | u32 *p = (u32 *)array; | |
830 | data->raw_size = *p; | |
831 | p++; | |
832 | data->raw_data = p; | |
833 | } | |
834 | ||
835 | return 0; | |
836 | } |