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 ACM |
9 | |
10 | static pid_t event__synthesize_comm(pid_t pid, int full, | |
cf553114 | 11 | event__handler_t process, |
d8f66248 | 12 | struct perf_session *session) |
234fbbf5 ACM |
13 | { |
14 | event_t ev; | |
15 | char filename[PATH_MAX]; | |
16 | char bf[BUFSIZ]; | |
17 | FILE *fp; | |
18 | size_t size = 0; | |
19 | DIR *tasks; | |
20 | struct dirent dirent, *next; | |
21 | pid_t tgid = 0; | |
22 | ||
23 | snprintf(filename, sizeof(filename), "/proc/%d/status", pid); | |
24 | ||
25 | fp = fopen(filename, "r"); | |
26 | if (fp == NULL) { | |
27 | out_race: | |
28 | /* | |
29 | * We raced with a task exiting - just return: | |
30 | */ | |
31 | pr_debug("couldn't open %s\n", filename); | |
32 | return 0; | |
33 | } | |
34 | ||
35 | memset(&ev.comm, 0, sizeof(ev.comm)); | |
36 | while (!ev.comm.comm[0] || !ev.comm.pid) { | |
37 | if (fgets(bf, sizeof(bf), fp) == NULL) | |
38 | goto out_failure; | |
39 | ||
40 | if (memcmp(bf, "Name:", 5) == 0) { | |
41 | char *name = bf + 5; | |
42 | while (*name && isspace(*name)) | |
43 | ++name; | |
44 | size = strlen(name) - 1; | |
45 | memcpy(ev.comm.comm, name, size++); | |
46 | } else if (memcmp(bf, "Tgid:", 5) == 0) { | |
47 | char *tgids = bf + 5; | |
48 | while (*tgids && isspace(*tgids)) | |
49 | ++tgids; | |
50 | tgid = ev.comm.pid = atoi(tgids); | |
51 | } | |
52 | } | |
53 | ||
54 | ev.comm.header.type = PERF_RECORD_COMM; | |
55 | size = ALIGN(size, sizeof(u64)); | |
56 | ev.comm.header.size = sizeof(ev.comm) - (sizeof(ev.comm.comm) - size); | |
57 | ||
58 | if (!full) { | |
59 | ev.comm.tid = pid; | |
60 | ||
d8f66248 | 61 | process(&ev, session); |
234fbbf5 ACM |
62 | goto out_fclose; |
63 | } | |
64 | ||
65 | snprintf(filename, sizeof(filename), "/proc/%d/task", pid); | |
66 | ||
67 | tasks = opendir(filename); | |
68 | if (tasks == NULL) | |
69 | goto out_race; | |
70 | ||
71 | while (!readdir_r(tasks, &dirent, &next) && next) { | |
72 | char *end; | |
73 | pid = strtol(dirent.d_name, &end, 10); | |
74 | if (*end) | |
75 | continue; | |
76 | ||
77 | ev.comm.tid = pid; | |
78 | ||
d8f66248 | 79 | process(&ev, session); |
234fbbf5 ACM |
80 | } |
81 | closedir(tasks); | |
82 | ||
83 | out_fclose: | |
84 | fclose(fp); | |
85 | return tgid; | |
86 | ||
87 | out_failure: | |
88 | pr_warning("couldn't get COMM and pgid, malformed %s\n", filename); | |
89 | return -1; | |
90 | } | |
91 | ||
92 | static int event__synthesize_mmap_events(pid_t pid, pid_t tgid, | |
cf553114 | 93 | event__handler_t process, |
d8f66248 | 94 | struct perf_session *session) |
234fbbf5 ACM |
95 | { |
96 | char filename[PATH_MAX]; | |
97 | FILE *fp; | |
98 | ||
99 | snprintf(filename, sizeof(filename), "/proc/%d/maps", pid); | |
100 | ||
101 | fp = fopen(filename, "r"); | |
102 | if (fp == NULL) { | |
103 | /* | |
104 | * We raced with a task exiting - just return: | |
105 | */ | |
106 | pr_debug("couldn't open %s\n", filename); | |
107 | return -1; | |
108 | } | |
109 | ||
110 | while (1) { | |
111 | char bf[BUFSIZ], *pbf = bf; | |
112 | event_t ev = { | |
18c3daa4 ACM |
113 | .header = { |
114 | .type = PERF_RECORD_MMAP, | |
a1645ce1 ZY |
115 | /* |
116 | * Just like the kernel, see __perf_event_mmap | |
117 | * in kernel/perf_event.c | |
118 | */ | |
119 | .misc = PERF_RECORD_MISC_USER, | |
18c3daa4 | 120 | }, |
234fbbf5 ACM |
121 | }; |
122 | int n; | |
123 | size_t size; | |
124 | if (fgets(bf, sizeof(bf), fp) == NULL) | |
125 | break; | |
126 | ||
127 | /* 00400000-0040c000 r-xp 00000000 fd:01 41038 /bin/cat */ | |
128 | n = hex2u64(pbf, &ev.mmap.start); | |
129 | if (n < 0) | |
130 | continue; | |
131 | pbf += n + 1; | |
132 | n = hex2u64(pbf, &ev.mmap.len); | |
133 | if (n < 0) | |
134 | continue; | |
135 | pbf += n + 3; | |
136 | if (*pbf == 'x') { /* vm_exec */ | |
4af8b35d | 137 | u64 vm_pgoff; |
234fbbf5 ACM |
138 | char *execname = strchr(bf, '/'); |
139 | ||
140 | /* Catch VDSO */ | |
141 | if (execname == NULL) | |
142 | execname = strstr(bf, "[vdso]"); | |
143 | ||
144 | if (execname == NULL) | |
145 | continue; | |
146 | ||
4af8b35d AB |
147 | pbf += 3; |
148 | n = hex2u64(pbf, &vm_pgoff); | |
149 | /* pgoff is in bytes, not pages */ | |
150 | if (n >= 0) | |
151 | ev.mmap.pgoff = vm_pgoff << getpagesize(); | |
152 | else | |
153 | ev.mmap.pgoff = 0; | |
154 | ||
234fbbf5 ACM |
155 | size = strlen(execname); |
156 | execname[size - 1] = '\0'; /* Remove \n */ | |
157 | memcpy(ev.mmap.filename, execname, size); | |
158 | size = ALIGN(size, sizeof(u64)); | |
159 | ev.mmap.len -= ev.mmap.start; | |
160 | ev.mmap.header.size = (sizeof(ev.mmap) - | |
161 | (sizeof(ev.mmap.filename) - size)); | |
162 | ev.mmap.pid = tgid; | |
163 | ev.mmap.tid = pid; | |
164 | ||
d8f66248 | 165 | process(&ev, session); |
234fbbf5 ACM |
166 | } |
167 | } | |
168 | ||
169 | fclose(fp); | |
170 | return 0; | |
171 | } | |
172 | ||
b7cece76 | 173 | int event__synthesize_modules(event__handler_t process, |
a1645ce1 | 174 | struct perf_session *session, |
23346f21 | 175 | struct machine *machine) |
b7cece76 ACM |
176 | { |
177 | struct rb_node *nd; | |
23346f21 | 178 | struct map_groups *kmaps = &machine->kmaps; |
a1645ce1 | 179 | u16 misc; |
b7cece76 | 180 | |
a1645ce1 ZY |
181 | /* |
182 | * kernel uses 0 for user space maps, see kernel/perf_event.c | |
183 | * __perf_event_mmap | |
184 | */ | |
23346f21 | 185 | if (machine__is_host(machine)) |
a1645ce1 ZY |
186 | misc = PERF_RECORD_MISC_KERNEL; |
187 | else | |
188 | misc = PERF_RECORD_MISC_GUEST_KERNEL; | |
189 | ||
190 | for (nd = rb_first(&kmaps->maps[MAP__FUNCTION]); | |
b7cece76 ACM |
191 | nd; nd = rb_next(nd)) { |
192 | event_t ev; | |
193 | size_t size; | |
194 | struct map *pos = rb_entry(nd, struct map, rb_node); | |
195 | ||
196 | if (pos->dso->kernel) | |
197 | continue; | |
198 | ||
199 | size = ALIGN(pos->dso->long_name_len + 1, sizeof(u64)); | |
200 | memset(&ev, 0, sizeof(ev)); | |
a1645ce1 | 201 | ev.mmap.header.misc = misc; |
b7cece76 ACM |
202 | ev.mmap.header.type = PERF_RECORD_MMAP; |
203 | ev.mmap.header.size = (sizeof(ev.mmap) - | |
204 | (sizeof(ev.mmap.filename) - size)); | |
205 | ev.mmap.start = pos->start; | |
206 | ev.mmap.len = pos->end - pos->start; | |
23346f21 | 207 | ev.mmap.pid = machine->pid; |
b7cece76 ACM |
208 | |
209 | memcpy(ev.mmap.filename, pos->dso->long_name, | |
210 | pos->dso->long_name_len + 1); | |
211 | process(&ev, session); | |
212 | } | |
213 | ||
214 | return 0; | |
215 | } | |
216 | ||
cf553114 | 217 | int event__synthesize_thread(pid_t pid, event__handler_t process, |
d8f66248 | 218 | struct perf_session *session) |
234fbbf5 | 219 | { |
d8f66248 | 220 | pid_t tgid = event__synthesize_comm(pid, 1, process, session); |
234fbbf5 ACM |
221 | if (tgid == -1) |
222 | return -1; | |
d8f66248 | 223 | return event__synthesize_mmap_events(pid, tgid, process, session); |
234fbbf5 ACM |
224 | } |
225 | ||
cf553114 | 226 | void event__synthesize_threads(event__handler_t process, |
d8f66248 | 227 | struct perf_session *session) |
234fbbf5 ACM |
228 | { |
229 | DIR *proc; | |
230 | struct dirent dirent, *next; | |
231 | ||
232 | proc = opendir("/proc"); | |
233 | ||
234 | while (!readdir_r(proc, &dirent, &next) && next) { | |
235 | char *end; | |
236 | pid_t pid = strtol(dirent.d_name, &end, 10); | |
237 | ||
238 | if (*end) /* only interested in proper numerical dirents */ | |
239 | continue; | |
240 | ||
d8f66248 | 241 | event__synthesize_thread(pid, process, session); |
234fbbf5 ACM |
242 | } |
243 | ||
244 | closedir(proc); | |
245 | } | |
62daacb5 | 246 | |
56b03f3c ACM |
247 | struct process_symbol_args { |
248 | const char *name; | |
249 | u64 start; | |
250 | }; | |
251 | ||
252 | static int find_symbol_cb(void *arg, const char *name, char type, u64 start) | |
253 | { | |
254 | struct process_symbol_args *args = arg; | |
255 | ||
881516eb ACM |
256 | /* |
257 | * Must be a function or at least an alias, as in PARISC64, where "_text" is | |
258 | * an 'A' to the same address as "_stext". | |
259 | */ | |
260 | if (!(symbol_type__is_a(type, MAP__FUNCTION) || | |
261 | type == 'A') || strcmp(name, args->name)) | |
56b03f3c ACM |
262 | return 0; |
263 | ||
264 | args->start = start; | |
265 | return 1; | |
266 | } | |
267 | ||
cf553114 | 268 | int event__synthesize_kernel_mmap(event__handler_t process, |
56b03f3c | 269 | struct perf_session *session, |
23346f21 | 270 | struct machine *machine, |
56b03f3c ACM |
271 | const char *symbol_name) |
272 | { | |
273 | size_t size; | |
a1645ce1 ZY |
274 | const char *filename, *mmap_name; |
275 | char path[PATH_MAX]; | |
276 | char name_buff[PATH_MAX]; | |
277 | struct map *map; | |
278 | ||
56b03f3c | 279 | event_t ev = { |
18c3daa4 ACM |
280 | .header = { |
281 | .type = PERF_RECORD_MMAP, | |
18c3daa4 | 282 | }, |
56b03f3c ACM |
283 | }; |
284 | /* | |
285 | * We should get this from /sys/kernel/sections/.text, but till that is | |
286 | * available use this, and after it is use this as a fallback for older | |
287 | * kernels. | |
288 | */ | |
289 | struct process_symbol_args args = { .name = symbol_name, }; | |
290 | ||
48ea8f54 | 291 | mmap_name = machine__mmap_name(machine, name_buff, sizeof(name_buff)); |
23346f21 | 292 | if (machine__is_host(machine)) { |
a1645ce1 ZY |
293 | /* |
294 | * kernel uses PERF_RECORD_MISC_USER for user space maps, | |
295 | * see kernel/perf_event.c __perf_event_mmap | |
296 | */ | |
297 | ev.header.misc = PERF_RECORD_MISC_KERNEL; | |
298 | filename = "/proc/kallsyms"; | |
299 | } else { | |
300 | ev.header.misc = PERF_RECORD_MISC_GUEST_KERNEL; | |
23346f21 | 301 | if (machine__is_default_guest(machine)) |
a1645ce1 ZY |
302 | filename = (char *) symbol_conf.default_guest_kallsyms; |
303 | else { | |
23346f21 | 304 | sprintf(path, "%s/proc/kallsyms", machine->root_dir); |
a1645ce1 ZY |
305 | filename = path; |
306 | } | |
307 | } | |
308 | ||
309 | if (kallsyms__parse(filename, &args, find_symbol_cb) <= 0) | |
56b03f3c ACM |
310 | return -ENOENT; |
311 | ||
23346f21 | 312 | map = machine->vmlinux_maps[MAP__FUNCTION]; |
56b03f3c | 313 | size = snprintf(ev.mmap.filename, sizeof(ev.mmap.filename), |
a1645ce1 | 314 | "%s%s", mmap_name, symbol_name) + 1; |
56b03f3c | 315 | size = ALIGN(size, sizeof(u64)); |
a1645ce1 ZY |
316 | ev.mmap.header.size = (sizeof(ev.mmap) - |
317 | (sizeof(ev.mmap.filename) - size)); | |
b7cece76 | 318 | ev.mmap.pgoff = args.start; |
a1645ce1 ZY |
319 | ev.mmap.start = map->start; |
320 | ev.mmap.len = map->end - ev.mmap.start; | |
23346f21 | 321 | ev.mmap.pid = machine->pid; |
56b03f3c ACM |
322 | |
323 | return process(&ev, session); | |
324 | } | |
325 | ||
d599db3f ACM |
326 | static void thread__comm_adjust(struct thread *self) |
327 | { | |
328 | char *comm = self->comm; | |
329 | ||
330 | if (!symbol_conf.col_width_list_str && !symbol_conf.field_sep && | |
331 | (!symbol_conf.comm_list || | |
332 | strlist__has_entry(symbol_conf.comm_list, comm))) { | |
333 | unsigned int slen = strlen(comm); | |
334 | ||
335 | if (slen > comms__col_width) { | |
336 | comms__col_width = slen; | |
337 | threads__col_width = slen + 6; | |
338 | } | |
339 | } | |
340 | } | |
341 | ||
342 | static int thread__set_comm_adjust(struct thread *self, const char *comm) | |
343 | { | |
344 | int ret = thread__set_comm(self, comm); | |
345 | ||
346 | if (ret) | |
347 | return ret; | |
348 | ||
349 | thread__comm_adjust(self); | |
350 | ||
351 | return 0; | |
352 | } | |
353 | ||
b3165f41 | 354 | int event__process_comm(event_t *self, struct perf_session *session) |
62daacb5 | 355 | { |
b3165f41 | 356 | struct thread *thread = perf_session__findnew(session, self->comm.pid); |
62daacb5 | 357 | |
bab81b62 | 358 | dump_printf(": %s:%d\n", self->comm.comm, self->comm.pid); |
62daacb5 | 359 | |
d599db3f | 360 | if (thread == NULL || thread__set_comm_adjust(thread, self->comm.comm)) { |
62daacb5 ACM |
361 | dump_printf("problem processing PERF_RECORD_COMM, skipping event.\n"); |
362 | return -1; | |
363 | } | |
364 | ||
365 | return 0; | |
366 | } | |
367 | ||
f823e441 | 368 | int event__process_lost(event_t *self, struct perf_session *session) |
62daacb5 ACM |
369 | { |
370 | dump_printf(": id:%Ld: lost:%Ld\n", self->lost.id, self->lost.lost); | |
f823e441 | 371 | session->events_stats.lost += self->lost.lost; |
62daacb5 ACM |
372 | return 0; |
373 | } | |
374 | ||
a1645ce1 ZY |
375 | static void event_set_kernel_mmap_len(struct map **maps, event_t *self) |
376 | { | |
377 | maps[MAP__FUNCTION]->start = self->mmap.start; | |
378 | maps[MAP__FUNCTION]->end = self->mmap.start + self->mmap.len; | |
379 | /* | |
380 | * Be a bit paranoid here, some perf.data file came with | |
381 | * a zero sized synthesized MMAP event for the kernel. | |
382 | */ | |
383 | if (maps[MAP__FUNCTION]->end == 0) | |
384 | maps[MAP__FUNCTION]->end = ~0UL; | |
385 | } | |
386 | ||
387 | static int event__process_kernel_mmap(event_t *self, | |
388 | struct perf_session *session) | |
62daacb5 | 389 | { |
56b03f3c | 390 | struct map *map; |
a1645ce1 | 391 | char kmmap_prefix[PATH_MAX]; |
23346f21 | 392 | struct machine *machine; |
a1645ce1 ZY |
393 | enum dso_kernel_type kernel_type; |
394 | bool is_kernel_mmap; | |
395 | ||
23346f21 ACM |
396 | machine = perf_session__findnew_machine(session, self->mmap.pid); |
397 | if (!machine) { | |
398 | pr_err("Can't find id %d's machine\n", self->mmap.pid); | |
a1645ce1 ZY |
399 | goto out_problem; |
400 | } | |
62daacb5 | 401 | |
48ea8f54 | 402 | machine__mmap_name(machine, kmmap_prefix, sizeof(kmmap_prefix)); |
23346f21 | 403 | if (machine__is_host(machine)) |
a1645ce1 ZY |
404 | kernel_type = DSO_TYPE_KERNEL; |
405 | else | |
406 | kernel_type = DSO_TYPE_GUEST_KERNEL; | |
62daacb5 | 407 | |
a1645ce1 ZY |
408 | is_kernel_mmap = memcmp(self->mmap.filename, |
409 | kmmap_prefix, | |
410 | strlen(kmmap_prefix)) == 0; | |
411 | if (self->mmap.filename[0] == '/' || | |
412 | (!is_kernel_mmap && self->mmap.filename[0] == '[')) { | |
b7cece76 | 413 | |
a1645ce1 ZY |
414 | char short_module_name[1024]; |
415 | char *name, *dot; | |
b7cece76 | 416 | |
a1645ce1 ZY |
417 | if (self->mmap.filename[0] == '/') { |
418 | name = strrchr(self->mmap.filename, '/'); | |
b7cece76 ACM |
419 | if (name == NULL) |
420 | goto out_problem; | |
421 | ||
422 | ++name; /* skip / */ | |
423 | dot = strrchr(name, '.'); | |
424 | if (dot == NULL) | |
425 | goto out_problem; | |
b7cece76 | 426 | snprintf(short_module_name, sizeof(short_module_name), |
a1645ce1 | 427 | "[%.*s]", (int)(dot - name), name); |
b7cece76 | 428 | strxfrchar(short_module_name, '-', '_'); |
a1645ce1 ZY |
429 | } else |
430 | strcpy(short_module_name, self->mmap.filename); | |
431 | ||
d28c6223 ACM |
432 | map = machine__new_module(machine, self->mmap.start, |
433 | self->mmap.filename); | |
a1645ce1 ZY |
434 | if (map == NULL) |
435 | goto out_problem; | |
436 | ||
437 | name = strdup(short_module_name); | |
438 | if (name == NULL) | |
439 | goto out_problem; | |
440 | ||
441 | map->dso->short_name = name; | |
442 | map->end = map->start + self->mmap.len; | |
443 | } else if (is_kernel_mmap) { | |
444 | const char *symbol_name = (self->mmap.filename + | |
445 | strlen(kmmap_prefix)); | |
446 | /* | |
447 | * Should be there already, from the build-id table in | |
448 | * the header. | |
449 | */ | |
23346f21 ACM |
450 | struct dso *kernel = __dsos__findnew(&machine->kernel_dsos, |
451 | kmmap_prefix); | |
a1645ce1 ZY |
452 | if (kernel == NULL) |
453 | goto out_problem; | |
454 | ||
455 | kernel->kernel = kernel_type; | |
d28c6223 | 456 | if (__machine__create_kernel_maps(machine, kernel) < 0) |
a1645ce1 ZY |
457 | goto out_problem; |
458 | ||
23346f21 ACM |
459 | event_set_kernel_mmap_len(machine->vmlinux_maps, self); |
460 | perf_session__set_kallsyms_ref_reloc_sym(machine->vmlinux_maps, | |
461 | symbol_name, | |
462 | self->mmap.pgoff); | |
463 | if (machine__is_default_guest(machine)) { | |
b7cece76 | 464 | /* |
a1645ce1 | 465 | * preload dso of guest kernel and modules |
b7cece76 | 466 | */ |
23346f21 ACM |
467 | dso__load(kernel, machine->vmlinux_maps[MAP__FUNCTION], |
468 | NULL); | |
a1645ce1 ZY |
469 | } |
470 | } | |
471 | return 0; | |
472 | out_problem: | |
473 | return -1; | |
474 | } | |
b7cece76 | 475 | |
a1645ce1 ZY |
476 | int event__process_mmap(event_t *self, struct perf_session *session) |
477 | { | |
23346f21 | 478 | struct machine *machine; |
a1645ce1 ZY |
479 | struct thread *thread; |
480 | struct map *map; | |
481 | u8 cpumode = self->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; | |
482 | int ret = 0; | |
b7cece76 | 483 | |
a1645ce1 ZY |
484 | dump_printf(" %d/%d: [%#Lx(%#Lx) @ %#Lx]: %s\n", |
485 | self->mmap.pid, self->mmap.tid, self->mmap.start, | |
486 | self->mmap.len, self->mmap.pgoff, self->mmap.filename); | |
487 | ||
488 | if (cpumode == PERF_RECORD_MISC_GUEST_KERNEL || | |
489 | cpumode == PERF_RECORD_MISC_KERNEL) { | |
490 | ret = event__process_kernel_mmap(self, session); | |
491 | if (ret < 0) | |
492 | goto out_problem; | |
56b03f3c ACM |
493 | return 0; |
494 | } | |
495 | ||
23346f21 | 496 | machine = perf_session__find_host_machine(session); |
4cc49458 ACM |
497 | if (machine == NULL) |
498 | goto out_problem; | |
499 | thread = perf_session__findnew(session, self->mmap.pid); | |
23346f21 | 500 | map = map__new(&machine->user_dsos, self->mmap.start, |
a1645ce1 ZY |
501 | self->mmap.len, self->mmap.pgoff, |
502 | self->mmap.pid, self->mmap.filename, | |
503 | MAP__FUNCTION, session->cwd, session->cwdlen); | |
56b03f3c | 504 | |
62daacb5 | 505 | if (thread == NULL || map == NULL) |
b7cece76 ACM |
506 | goto out_problem; |
507 | ||
508 | thread__insert_map(thread, map); | |
509 | return 0; | |
62daacb5 | 510 | |
b7cece76 ACM |
511 | out_problem: |
512 | dump_printf("problem processing PERF_RECORD_MMAP, skipping event.\n"); | |
62daacb5 ACM |
513 | return 0; |
514 | } | |
515 | ||
b3165f41 | 516 | int event__process_task(event_t *self, struct perf_session *session) |
62daacb5 | 517 | { |
b3165f41 ACM |
518 | struct thread *thread = perf_session__findnew(session, self->fork.pid); |
519 | struct thread *parent = perf_session__findnew(session, self->fork.ppid); | |
62daacb5 ACM |
520 | |
521 | dump_printf("(%d:%d):(%d:%d)\n", self->fork.pid, self->fork.tid, | |
522 | self->fork.ppid, self->fork.ptid); | |
523 | /* | |
524 | * A thread clone will have the same PID for both parent and child. | |
525 | */ | |
526 | if (thread == parent) | |
527 | return 0; | |
528 | ||
529 | if (self->header.type == PERF_RECORD_EXIT) | |
530 | return 0; | |
531 | ||
532 | if (thread == NULL || parent == NULL || | |
533 | thread__fork(thread, parent) < 0) { | |
534 | dump_printf("problem processing PERF_RECORD_FORK, skipping event.\n"); | |
535 | return -1; | |
536 | } | |
537 | ||
538 | return 0; | |
539 | } | |
1ed091c4 | 540 | |
59ee68ec ACM |
541 | void thread__find_addr_map(struct thread *self, |
542 | struct perf_session *session, u8 cpumode, | |
a1645ce1 | 543 | enum map_type type, pid_t pid, u64 addr, |
59ee68ec | 544 | struct addr_location *al) |
1ed091c4 | 545 | { |
9958e1f0 | 546 | struct map_groups *mg = &self->mg; |
23346f21 | 547 | struct machine *machine = NULL; |
1ed091c4 | 548 | |
9958e1f0 | 549 | al->thread = self; |
1ed091c4 | 550 | al->addr = addr; |
a1645ce1 ZY |
551 | al->cpumode = cpumode; |
552 | al->filtered = false; | |
1ed091c4 | 553 | |
a1645ce1 | 554 | if (cpumode == PERF_RECORD_MISC_KERNEL && perf_host) { |
1ed091c4 | 555 | al->level = 'k'; |
23346f21 | 556 | machine = perf_session__find_host_machine(session); |
4cc49458 ACM |
557 | if (machine == NULL) { |
558 | al->map = NULL; | |
559 | return; | |
560 | } | |
23346f21 | 561 | mg = &machine->kmaps; |
a1645ce1 | 562 | } else if (cpumode == PERF_RECORD_MISC_USER && perf_host) { |
1ed091c4 | 563 | al->level = '.'; |
23346f21 | 564 | machine = perf_session__find_host_machine(session); |
a1645ce1 ZY |
565 | } else if (cpumode == PERF_RECORD_MISC_GUEST_KERNEL && perf_guest) { |
566 | al->level = 'g'; | |
23346f21 | 567 | machine = perf_session__find_machine(session, pid); |
4cc49458 | 568 | if (machine == NULL) { |
a1645ce1 ZY |
569 | al->map = NULL; |
570 | return; | |
571 | } | |
23346f21 | 572 | mg = &machine->kmaps; |
a1645ce1 ZY |
573 | } else { |
574 | /* | |
575 | * 'u' means guest os user space. | |
576 | * TODO: We don't support guest user space. Might support late. | |
577 | */ | |
578 | if (cpumode == PERF_RECORD_MISC_GUEST_USER && perf_guest) | |
579 | al->level = 'u'; | |
580 | else | |
581 | al->level = 'H'; | |
1ed091c4 | 582 | al->map = NULL; |
a1645ce1 ZY |
583 | |
584 | if ((cpumode == PERF_RECORD_MISC_GUEST_USER || | |
585 | cpumode == PERF_RECORD_MISC_GUEST_KERNEL) && | |
586 | !perf_guest) | |
587 | al->filtered = true; | |
588 | if ((cpumode == PERF_RECORD_MISC_USER || | |
589 | cpumode == PERF_RECORD_MISC_KERNEL) && | |
590 | !perf_host) | |
591 | al->filtered = true; | |
592 | ||
1ed091c4 ACM |
593 | return; |
594 | } | |
595 | try_again: | |
9958e1f0 | 596 | al->map = map_groups__find(mg, type, al->addr); |
1ed091c4 ACM |
597 | if (al->map == NULL) { |
598 | /* | |
599 | * If this is outside of all known maps, and is a negative | |
600 | * address, try to look it up in the kernel dso, as it might be | |
601 | * a vsyscall or vdso (which executes in user-mode). | |
602 | * | |
603 | * XXX This is nasty, we should have a symbol list in the | |
604 | * "[vdso]" dso, but for now lets use the old trick of looking | |
605 | * in the whole kernel symbol list. | |
606 | */ | |
a1645ce1 | 607 | if ((long long)al->addr < 0 && |
23346f21 ACM |
608 | cpumode == PERF_RECORD_MISC_KERNEL && |
609 | machine && mg != &machine->kmaps) { | |
610 | mg = &machine->kmaps; | |
1ed091c4 ACM |
611 | goto try_again; |
612 | } | |
59ee68ec | 613 | } else |
1ed091c4 | 614 | al->addr = al->map->map_ip(al->map, al->addr); |
59ee68ec ACM |
615 | } |
616 | ||
617 | void thread__find_addr_location(struct thread *self, | |
618 | struct perf_session *session, u8 cpumode, | |
a1645ce1 | 619 | enum map_type type, pid_t pid, u64 addr, |
59ee68ec ACM |
620 | struct addr_location *al, |
621 | symbol_filter_t filter) | |
622 | { | |
a1645ce1 | 623 | thread__find_addr_map(self, session, cpumode, type, pid, addr, al); |
59ee68ec | 624 | if (al->map != NULL) |
9de89fe7 | 625 | al->sym = map__find_symbol(al->map, al->addr, filter); |
59ee68ec ACM |
626 | else |
627 | al->sym = NULL; | |
1ed091c4 ACM |
628 | } |
629 | ||
c410a338 ACM |
630 | static void dso__calc_col_width(struct dso *self) |
631 | { | |
632 | if (!symbol_conf.col_width_list_str && !symbol_conf.field_sep && | |
633 | (!symbol_conf.dso_list || | |
634 | strlist__has_entry(symbol_conf.dso_list, self->name))) { | |
9890948d ACM |
635 | u16 slen = self->short_name_len; |
636 | if (verbose) | |
637 | slen = self->long_name_len; | |
638 | if (dsos__col_width < slen) | |
c410a338 ACM |
639 | dsos__col_width = slen; |
640 | } | |
641 | ||
642 | self->slen_calculated = 1; | |
643 | } | |
644 | ||
b3165f41 ACM |
645 | int event__preprocess_sample(const event_t *self, struct perf_session *session, |
646 | struct addr_location *al, symbol_filter_t filter) | |
1ed091c4 ACM |
647 | { |
648 | u8 cpumode = self->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; | |
b3165f41 | 649 | struct thread *thread = perf_session__findnew(session, self->ip.pid); |
1ed091c4 ACM |
650 | |
651 | if (thread == NULL) | |
652 | return -1; | |
653 | ||
c410a338 ACM |
654 | if (symbol_conf.comm_list && |
655 | !strlist__has_entry(symbol_conf.comm_list, thread->comm)) | |
656 | goto out_filtered; | |
657 | ||
1ed091c4 | 658 | dump_printf(" ... thread: %s:%d\n", thread->comm, thread->pid); |
1f626bc3 ACM |
659 | /* |
660 | * Have we already created the kernel maps for the host machine? | |
661 | * | |
662 | * This should have happened earlier, when we processed the kernel MMAP | |
663 | * events, but for older perf.data files there was no such thing, so do | |
664 | * it now. | |
665 | */ | |
666 | if (cpumode == PERF_RECORD_MISC_KERNEL && | |
667 | session->host_machine.vmlinux_maps[MAP__FUNCTION] == NULL) | |
668 | machine__create_kernel_maps(&session->host_machine); | |
1ed091c4 | 669 | |
96415e4d | 670 | thread__find_addr_map(thread, session, cpumode, MAP__FUNCTION, |
a1645ce1 | 671 | self->ip.pid, self->ip.ip, al); |
1ed091c4 ACM |
672 | dump_printf(" ...... dso: %s\n", |
673 | al->map ? al->map->dso->long_name : | |
674 | al->level == 'H' ? "[hypervisor]" : "<not found>"); | |
96415e4d ACM |
675 | al->sym = NULL; |
676 | ||
677 | if (al->map) { | |
678 | if (symbol_conf.dso_list && | |
679 | (!al->map || !al->map->dso || | |
680 | !(strlist__has_entry(symbol_conf.dso_list, | |
681 | al->map->dso->short_name) || | |
682 | (al->map->dso->short_name != al->map->dso->long_name && | |
683 | strlist__has_entry(symbol_conf.dso_list, | |
684 | al->map->dso->long_name))))) | |
685 | goto out_filtered; | |
686 | /* | |
687 | * We have to do this here as we may have a dso with no symbol | |
688 | * hit that has a name longer than the ones with symbols | |
689 | * sampled. | |
690 | */ | |
691 | if (!sort_dso.elide && !al->map->dso->slen_calculated) | |
692 | dso__calc_col_width(al->map->dso); | |
693 | ||
694 | al->sym = map__find_symbol(al->map, al->addr, filter); | |
3ceb0d44 ACM |
695 | } else { |
696 | const unsigned int unresolved_col_width = BITS_PER_LONG / 4; | |
697 | ||
698 | if (dsos__col_width < unresolved_col_width && | |
699 | !symbol_conf.col_width_list_str && !symbol_conf.field_sep && | |
700 | !symbol_conf.dso_list) | |
701 | dsos__col_width = unresolved_col_width; | |
96415e4d | 702 | } |
c410a338 ACM |
703 | |
704 | if (symbol_conf.sym_list && al->sym && | |
705 | !strlist__has_entry(symbol_conf.sym_list, al->sym->name)) | |
706 | goto out_filtered; | |
707 | ||
c410a338 ACM |
708 | return 0; |
709 | ||
710 | out_filtered: | |
711 | al->filtered = true; | |
1ed091c4 ACM |
712 | return 0; |
713 | } | |
180f95e2 OH |
714 | |
715 | int event__parse_sample(event_t *event, u64 type, struct sample_data *data) | |
716 | { | |
717 | u64 *array = event->sample.array; | |
718 | ||
719 | if (type & PERF_SAMPLE_IP) { | |
720 | data->ip = event->ip.ip; | |
721 | array++; | |
722 | } | |
723 | ||
724 | if (type & PERF_SAMPLE_TID) { | |
725 | u32 *p = (u32 *)array; | |
726 | data->pid = p[0]; | |
727 | data->tid = p[1]; | |
728 | array++; | |
729 | } | |
730 | ||
731 | if (type & PERF_SAMPLE_TIME) { | |
732 | data->time = *array; | |
733 | array++; | |
734 | } | |
735 | ||
736 | if (type & PERF_SAMPLE_ADDR) { | |
737 | data->addr = *array; | |
738 | array++; | |
739 | } | |
740 | ||
02bf60aa | 741 | data->id = -1ULL; |
180f95e2 OH |
742 | if (type & PERF_SAMPLE_ID) { |
743 | data->id = *array; | |
744 | array++; | |
745 | } | |
746 | ||
747 | if (type & PERF_SAMPLE_STREAM_ID) { | |
748 | data->stream_id = *array; | |
749 | array++; | |
750 | } | |
751 | ||
752 | if (type & PERF_SAMPLE_CPU) { | |
753 | u32 *p = (u32 *)array; | |
754 | data->cpu = *p; | |
755 | array++; | |
756 | } | |
757 | ||
758 | if (type & PERF_SAMPLE_PERIOD) { | |
759 | data->period = *array; | |
760 | array++; | |
761 | } | |
762 | ||
763 | if (type & PERF_SAMPLE_READ) { | |
764 | pr_debug("PERF_SAMPLE_READ is unsuported for now\n"); | |
765 | return -1; | |
766 | } | |
767 | ||
768 | if (type & PERF_SAMPLE_CALLCHAIN) { | |
769 | data->callchain = (struct ip_callchain *)array; | |
770 | array += 1 + data->callchain->nr; | |
771 | } | |
772 | ||
773 | if (type & PERF_SAMPLE_RAW) { | |
774 | u32 *p = (u32 *)array; | |
775 | data->raw_size = *p; | |
776 | p++; | |
777 | data->raw_data = p; | |
778 | } | |
779 | ||
780 | return 0; | |
781 | } |