tools/perf/util/event.c

   1 #include <linux/types.h>
   2 #include "event.h"
   3 #include "debug.h"
   4 #include "session.h"
   5 #include "sort.h"
   6 #include "string.h"
   7 #include "strlist.h"
   8 #include "thread.h"
   9
  10 static pid_t event__synthesize_comm(pid_t pid, int full,
  11                                     event__handler_t process,
  12                                     struct perf_session *session)
  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
  61                 process(&ev, session);
  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
  79                 process(&ev, session);
  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,
  93                                          event__handler_t process,
  94                                          struct perf_session *session)
  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 = {
 113                         .header = {
 114                                 .type = PERF_RECORD_MMAP,
 115                                 /*
 116                                  * Just like the kernel, see __perf_event_mmap
 117                                  * in kernel/perf_event.c
 118                                  */
 119                                 .misc = PERF_RECORD_MISC_USER,
 120                          },
 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 */
 137                         u64 vm_pgoff;
 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
 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
 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
 165                         process(&ev, session);
 166                 }
 167         }
 168
 169         fclose(fp);
 170         return 0;
 171 }
 172
 173 int event__synthesize_modules(event__handler_t process,
 174                               struct perf_session *session,
 175                               struct kernel_info *kerninfo)
 176 {
 177         struct rb_node *nd;
 178         struct map_groups *kmaps = &kerninfo->kmaps;
 179         u16 misc;
 180
 181         /*
 182          * kernel uses 0 for user space maps, see kernel/perf_event.c
 183          * __perf_event_mmap
 184          */
 185         if (is_host_kernel(kerninfo))
 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]);
 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));
 201                 ev.mmap.header.misc = misc;
 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;
 207                 ev.mmap.pid   = kerninfo->pid;
 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
 217 int event__synthesize_thread(pid_t pid, event__handler_t process,
 218                              struct perf_session *session)
 219 {
 220         pid_t tgid = event__synthesize_comm(pid, 1, process, session);
 221         if (tgid == -1)
 222                 return -1;
 223         return event__synthesize_mmap_events(pid, tgid, process, session);
 224 }
 225
 226 void event__synthesize_threads(event__handler_t process,
 227                                struct perf_session *session)
 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
 241                 event__synthesize_thread(pid, process, session);
 242         }
 243
 244         closedir(proc);
 245 }
 246
 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
 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))
 262                 return 0;
 263
 264         args->start = start;
 265         return 1;
 266 }
 267
 268 int event__synthesize_kernel_mmap(event__handler_t process,
 269                                   struct perf_session *session,
 270                                   struct kernel_info *kerninfo,
 271                                   const char *symbol_name)
 272 {
 273         size_t size;
 274         const char *filename, *mmap_name;
 275         char path[PATH_MAX];
 276         char name_buff[PATH_MAX];
 277         struct map *map;
 278
 279         event_t ev = {
 280                 .header = {
 281                         .type = PERF_RECORD_MMAP,
 282                 },
 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
 291         mmap_name = kern_mmap_name(kerninfo, name_buff);
 292         if (is_host_kernel(kerninfo)) {
 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;
 301                 if (is_default_guest(kerninfo))
 302                         filename = (char *) symbol_conf.default_guest_kallsyms;
 303                 else {
 304                         sprintf(path, "%s/proc/kallsyms", kerninfo->root_dir);
 305                         filename = path;
 306                 }
 307         }
 308
 309         if (kallsyms__parse(filename, &args, find_symbol_cb) <= 0)
 310                 return -ENOENT;
 311
 312         map = kerninfo->vmlinux_maps[MAP__FUNCTION];
 313         size = snprintf(ev.mmap.filename, sizeof(ev.mmap.filename),
 314                         "%s%s", mmap_name, symbol_name) + 1;
 315         size = ALIGN(size, sizeof(u64));
 316         ev.mmap.header.size = (sizeof(ev.mmap) -
 317                         (sizeof(ev.mmap.filename) - size));
 318         ev.mmap.pgoff = args.start;
 319         ev.mmap.start = map->start;
 320         ev.mmap.len   = map->end - ev.mmap.start;
 321         ev.mmap.pid   = kerninfo->pid;
 322
 323         return process(&ev, session);
 324 }
 325
 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
 354 int event__process_comm(event_t *self, struct perf_session *session)
 355 {
 356         struct thread *thread = perf_session__findnew(session, self->comm.pid);
 357
 358         dump_printf(": %s:%d\n", self->comm.comm, self->comm.pid);
 359
 360         if (thread == NULL || thread__set_comm_adjust(thread, self->comm.comm)) {
 361                 dump_printf("problem processing PERF_RECORD_COMM, skipping event.\n");
 362                 return -1;
 363         }
 364
 365         return 0;
 366 }
 367
 368 int event__process_lost(event_t *self, struct perf_session *session)
 369 {
 370         dump_printf(": id:%Ld: lost:%Ld\n", self->lost.id, self->lost.lost);
 371         session->events_stats.lost += self->lost.lost;
 372         return 0;
 373 }
 374
 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)
 389 {
 390         struct map *map;
 391         char kmmap_prefix[PATH_MAX];
 392         struct kernel_info *kerninfo;
 393         enum dso_kernel_type kernel_type;
 394         bool is_kernel_mmap;
 395
 396         kerninfo = kerninfo__findnew(&session->kerninfo_root, self->mmap.pid);
 397         if (!kerninfo) {
 398                 pr_err("Can't find id %d's kerninfo\n", self->mmap.pid);
 399                 goto out_problem;
 400         }
 401
 402         kern_mmap_name(kerninfo, kmmap_prefix);
 403         if (is_host_kernel(kerninfo))
 404                 kernel_type = DSO_TYPE_KERNEL;
 405         else
 406                 kernel_type = DSO_TYPE_GUEST_KERNEL;
 407
 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] == '[')) {
 413
 414                 char short_module_name[1024];
 415                 char *name, *dot;
 416
 417                 if (self->mmap.filename[0] == '/') {
 418                         name = strrchr(self->mmap.filename, '/');
 419                         if (name == NULL)
 420                                 goto out_problem;
 421
 422                         ++name; /* skip / */
 423                         dot = strrchr(name, '.');
 424                         if (dot == NULL)
 425                                 goto out_problem;
 426                         snprintf(short_module_name, sizeof(short_module_name),
 427                                         "[%.*s]", (int)(dot - name), name);
 428                         strxfrchar(short_module_name, '-', '_');
 429                 } else
 430                         strcpy(short_module_name, self->mmap.filename);
 431
 432                 map = map_groups__new_module(&kerninfo->kmaps,
 433                                 self->mmap.start,
 434                                 self->mmap.filename,
 435                                 kerninfo);
 436                 if (map == NULL)
 437                         goto out_problem;
 438
 439                 name = strdup(short_module_name);
 440                 if (name == NULL)
 441                         goto out_problem;
 442
 443                 map->dso->short_name = name;
 444                 map->end = map->start + self->mmap.len;
 445         } else if (is_kernel_mmap) {
 446                 const char *symbol_name = (self->mmap.filename +
 447                                 strlen(kmmap_prefix));
 448                 /*
 449                  * Should be there already, from the build-id table in
 450                  * the header.
 451                  */
 452                 struct dso *kernel = __dsos__findnew(&kerninfo->dsos__kernel,
 453                                 kmmap_prefix);
 454                 if (kernel == NULL)
 455                         goto out_problem;
 456
 457                 kernel->kernel = kernel_type;
 458                 if (__map_groups__create_kernel_maps(&kerninfo->kmaps,
 459                                         kerninfo->vmlinux_maps, kernel) < 0)
 460                         goto out_problem;
 461
 462                 event_set_kernel_mmap_len(kerninfo->vmlinux_maps, self);
 463                 perf_session__set_kallsyms_ref_reloc_sym(kerninfo->vmlinux_maps,
 464                                 symbol_name,
 465                                 self->mmap.pgoff);
 466                 if (is_default_guest(kerninfo)) {
 467                         /*
 468                          * preload dso of guest kernel and modules
 469                          */
 470                         dso__load(kernel,
 471                                 kerninfo->vmlinux_maps[MAP__FUNCTION],
 472                                 NULL);
 473                 }
 474         }
 475         return 0;
 476 out_problem:
 477         return -1;
 478 }
 479
 480 int event__process_mmap(event_t *self, struct perf_session *session)
 481 {
 482         struct kernel_info *kerninfo;
 483         struct thread *thread;
 484         struct map *map;
 485         u8 cpumode = self->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
 486         int ret = 0;
 487
 488         dump_printf(" %d/%d: [%#Lx(%#Lx) @ %#Lx]: %s\n",
 489                         self->mmap.pid, self->mmap.tid, self->mmap.start,
 490                         self->mmap.len, self->mmap.pgoff, self->mmap.filename);
 491
 492         if (cpumode == PERF_RECORD_MISC_GUEST_KERNEL ||
 493             cpumode == PERF_RECORD_MISC_KERNEL) {
 494                 ret = event__process_kernel_mmap(self, session);
 495                 if (ret < 0)
 496                         goto out_problem;
 497                 return 0;
 498         }
 499
 500         thread = perf_session__findnew(session, self->mmap.pid);
 501         kerninfo = kerninfo__findhost(&session->kerninfo_root);
 502         map = map__new(&kerninfo->dsos__user, self->mmap.start,
 503                         self->mmap.len, self->mmap.pgoff,
 504                         self->mmap.pid, self->mmap.filename,
 505                         MAP__FUNCTION, session->cwd, session->cwdlen);
 506
 507         if (thread == NULL || map == NULL)
 508                 goto out_problem;
 509
 510         thread__insert_map(thread, map);
 511         return 0;
 512
 513 out_problem:
 514         dump_printf("problem processing PERF_RECORD_MMAP, skipping event.\n");
 515         return 0;
 516 }
 517
 518 int event__process_task(event_t *self, struct perf_session *session)
 519 {
 520         struct thread *thread = perf_session__findnew(session, self->fork.pid);
 521         struct thread *parent = perf_session__findnew(session, self->fork.ppid);
 522
 523         dump_printf("(%d:%d):(%d:%d)\n", self->fork.pid, self->fork.tid,
 524                     self->fork.ppid, self->fork.ptid);
 525         /*
 526          * A thread clone will have the same PID for both parent and child.
 527          */
 528         if (thread == parent)
 529                 return 0;
 530
 531         if (self->header.type == PERF_RECORD_EXIT)
 532                 return 0;
 533
 534         if (thread == NULL || parent == NULL ||
 535             thread__fork(thread, parent) < 0) {
 536                 dump_printf("problem processing PERF_RECORD_FORK, skipping event.\n");
 537                 return -1;
 538         }
 539
 540         return 0;
 541 }
 542
 543 void thread__find_addr_map(struct thread *self,
 544                            struct perf_session *session, u8 cpumode,
 545                            enum map_type type, pid_t pid, u64 addr,
 546                            struct addr_location *al)
 547 {
 548         struct map_groups *mg = &self->mg;
 549         struct kernel_info *kerninfo = NULL;
 550
 551         al->thread = self;
 552         al->addr = addr;
 553         al->cpumode = cpumode;
 554         al->filtered = false;
 555
 556         if (cpumode == PERF_RECORD_MISC_KERNEL && perf_host) {
 557                 al->level = 'k';
 558                 kerninfo = kerninfo__findhost(&session->kerninfo_root);
 559                 mg = &kerninfo->kmaps;
 560         } else if (cpumode == PERF_RECORD_MISC_USER && perf_host) {
 561                 al->level = '.';
 562                 kerninfo = kerninfo__findhost(&session->kerninfo_root);
 563         } else if (cpumode == PERF_RECORD_MISC_GUEST_KERNEL && perf_guest) {
 564                 al->level = 'g';
 565                 kerninfo = kerninfo__find(&session->kerninfo_root, pid);
 566                 if (!kerninfo) {
 567                         al->map = NULL;
 568                         return;
 569                 }
 570                 mg = &kerninfo->kmaps;
 571         } else {
 572                 /*
 573                  * 'u' means guest os user space.
 574                  * TODO: We don't support guest user space. Might support late.
 575                  */
 576                 if (cpumode == PERF_RECORD_MISC_GUEST_USER && perf_guest)
 577                         al->level = 'u';
 578                 else
 579                         al->level = 'H';
 580                 al->map = NULL;
 581
 582                 if ((cpumode == PERF_RECORD_MISC_GUEST_USER ||
 583                         cpumode == PERF_RECORD_MISC_GUEST_KERNEL) &&
 584                         !perf_guest)
 585                         al->filtered = true;
 586                 if ((cpumode == PERF_RECORD_MISC_USER ||
 587                         cpumode == PERF_RECORD_MISC_KERNEL) &&
 588                         !perf_host)
 589                         al->filtered = true;
 590
 591                 return;
 592         }
 593 try_again:
 594         al->map = map_groups__find(mg, type, al->addr);
 595         if (al->map == NULL) {
 596                 /*
 597                  * If this is outside of all known maps, and is a negative
 598                  * address, try to look it up in the kernel dso, as it might be
 599                  * a vsyscall or vdso (which executes in user-mode).
 600                  *
 601                  * XXX This is nasty, we should have a symbol list in the
 602                  * "[vdso]" dso, but for now lets use the old trick of looking
 603                  * in the whole kernel symbol list.
 604                  */
 605                 if ((long long)al->addr < 0 &&
 606                         cpumode == PERF_RECORD_MISC_KERNEL &&
 607                         kerninfo &&
 608                         mg != &kerninfo->kmaps)  {
 609                         mg = &kerninfo->kmaps;
 610                         goto try_again;
 611                 }
 612         } else
 613                 al->addr = al->map->map_ip(al->map, al->addr);
 614 }
 615
 616 void thread__find_addr_location(struct thread *self,
 617                                 struct perf_session *session, u8 cpumode,
 618                                 enum map_type type, pid_t pid, u64 addr,
 619                                 struct addr_location *al,
 620                                 symbol_filter_t filter)
 621 {
 622         thread__find_addr_map(self, session, cpumode, type, pid, addr, al);
 623         if (al->map != NULL)
 624                 al->sym = map__find_symbol(al->map, al->addr, filter);
 625         else
 626                 al->sym = NULL;
 627 }
 628
 629 static void dso__calc_col_width(struct dso *self)
 630 {
 631         if (!symbol_conf.col_width_list_str && !symbol_conf.field_sep &&
 632             (!symbol_conf.dso_list ||
 633              strlist__has_entry(symbol_conf.dso_list, self->name))) {
 634                 unsigned int slen = strlen(self->name);
 635                 if (slen > dsos__col_width)
 636                         dsos__col_width = slen;
 637         }
 638
 639         self->slen_calculated = 1;
 640 }
 641
 642 int event__preprocess_sample(const event_t *self, struct perf_session *session,
 643                              struct addr_location *al, symbol_filter_t filter)
 644 {
 645         u8 cpumode = self->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
 646         struct thread *thread = perf_session__findnew(session, self->ip.pid);
 647
 648         if (thread == NULL)
 649                 return -1;
 650
 651         if (symbol_conf.comm_list &&
 652             !strlist__has_entry(symbol_conf.comm_list, thread->comm))
 653                 goto out_filtered;
 654
 655         dump_printf(" ... thread: %s:%d\n", thread->comm, thread->pid);
 656
 657         thread__find_addr_map(thread, session, cpumode, MAP__FUNCTION,
 658                               self->ip.pid, self->ip.ip, al);
 659         dump_printf(" ...... dso: %s\n",
 660                     al->map ? al->map->dso->long_name :
 661                         al->level == 'H' ? "[hypervisor]" : "<not found>");
 662         al->sym = NULL;
 663
 664         if (al->map) {
 665                 if (symbol_conf.dso_list &&
 666                     (!al->map || !al->map->dso ||
 667                      !(strlist__has_entry(symbol_conf.dso_list,
 668                                           al->map->dso->short_name) ||
 669                        (al->map->dso->short_name != al->map->dso->long_name &&
 670                         strlist__has_entry(symbol_conf.dso_list,
 671                                            al->map->dso->long_name)))))
 672                         goto out_filtered;
 673                 /*
 674                  * We have to do this here as we may have a dso with no symbol
 675                  * hit that has a name longer than the ones with symbols
 676                  * sampled.
 677                  */
 678                 if (!sort_dso.elide && !al->map->dso->slen_calculated)
 679                         dso__calc_col_width(al->map->dso);
 680
 681                 al->sym = map__find_symbol(al->map, al->addr, filter);
 682         }
 683
 684         if (symbol_conf.sym_list && al->sym &&
 685             !strlist__has_entry(symbol_conf.sym_list, al->sym->name))
 686                 goto out_filtered;
 687
 688         return 0;
 689
 690 out_filtered:
 691         al->filtered = true;
 692         return 0;
 693 }
 694
 695 int event__parse_sample(event_t *event, u64 type, struct sample_data *data)
 696 {
 697         u64 *array = event->sample.array;
 698
 699         if (type & PERF_SAMPLE_IP) {
 700                 data->ip = event->ip.ip;
 701                 array++;
 702         }
 703
 704         if (type & PERF_SAMPLE_TID) {
 705                 u32 *p = (u32 *)array;
 706                 data->pid = p[0];
 707                 data->tid = p[1];
 708                 array++;
 709         }
 710
 711         if (type & PERF_SAMPLE_TIME) {
 712                 data->time = *array;
 713                 array++;
 714         }
 715
 716         if (type & PERF_SAMPLE_ADDR) {
 717                 data->addr = *array;
 718                 array++;
 719         }
 720
 721         if (type & PERF_SAMPLE_ID) {
 722                 data->id = *array;
 723                 array++;
 724         }
 725
 726         if (type & PERF_SAMPLE_STREAM_ID) {
 727                 data->stream_id = *array;
 728                 array++;
 729         }
 730
 731         if (type & PERF_SAMPLE_CPU) {
 732                 u32 *p = (u32 *)array;
 733                 data->cpu = *p;
 734                 array++;
 735         }
 736
 737         if (type & PERF_SAMPLE_PERIOD) {
 738                 data->period = *array;
 739                 array++;
 740         }
 741
 742         if (type & PERF_SAMPLE_READ) {
 743                 pr_debug("PERF_SAMPLE_READ is unsuported for now\n");
 744                 return -1;
 745         }
 746
 747         if (type & PERF_SAMPLE_CALLCHAIN) {
 748                 data->callchain = (struct ip_callchain *)array;
 749                 array += 1 + data->callchain->nr;
 750         }
 751
 752         if (type & PERF_SAMPLE_RAW) {
 753                 u32 *p = (u32 *)array;
 754                 data->raw_size = *p;
 755                 p++;
 756                 data->raw_data = p;
 757         }
 758
 759         return 0;
 760 }