linux/tools/perf/util/event.c
<<
>>
Prefs
   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
  10const 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
  27static pid_t event__synthesize_comm(pid_t pid, int full,
  28                                    event__handler_t process,
  29                                    struct perf_session *session)
  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) {
  44out_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
  78                process(&ev, session);
  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
  96                process(&ev, session);
  97        }
  98        closedir(tasks);
  99
 100out_fclose:
 101        fclose(fp);
 102        return tgid;
 103
 104out_failure:
 105        pr_warning("couldn't get COMM and pgid, malformed %s\n", filename);
 106        return -1;
 107}
 108
 109static int event__synthesize_mmap_events(pid_t pid, pid_t tgid,
 110                                         event__handler_t process,
 111                                         struct perf_session *session)
 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 = {
 130                        .header = {
 131                                .type = PERF_RECORD_MMAP,
 132                                /*
 133                                 * Just like the kernel, see __perf_event_mmap
 134                                 * in kernel/perf_event.c
 135                                 */
 136                                .misc = PERF_RECORD_MISC_USER,
 137                         },
 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                        u64 vm_pgoff;
 155                        char *execname = strchr(bf, '/');
 156
 157                        /* Catch VDSO */
 158                        if (execname == NULL)
 159                                execname = strstr(bf, "[vdso]");
 160
 161                        if (execname == NULL)
 162                                continue;
 163
 164                        pbf += 3;
 165                        n = hex2u64(pbf, &vm_pgoff);
 166                        /* pgoff is in bytes, not pages */
 167                        if (n >= 0)
 168                                ev.mmap.pgoff = vm_pgoff << getpagesize();
 169                        else
 170                                ev.mmap.pgoff = 0;
 171
 172                        size = strlen(execname);
 173                        execname[size - 1] = '\0'; /* Remove \n */
 174                        memcpy(ev.mmap.filename, execname, size);
 175                        size = ALIGN(size, sizeof(u64));
 176                        ev.mmap.len -= ev.mmap.start;
 177                        ev.mmap.header.size = (sizeof(ev.mmap) -
 178                                               (sizeof(ev.mmap.filename) - size));
 179                        ev.mmap.pid = tgid;
 180                        ev.mmap.tid = pid;
 181
 182                        process(&ev, session);
 183                }
 184        }
 185
 186        fclose(fp);
 187        return 0;
 188}
 189
 190int event__synthesize_modules(event__handler_t process,
 191                              struct perf_session *session,
 192                              struct machine *machine)
 193{
 194        struct rb_node *nd;
 195        struct map_groups *kmaps = &machine->kmaps;
 196        u16 misc;
 197
 198        /*
 199         * kernel uses 0 for user space maps, see kernel/perf_event.c
 200         * __perf_event_mmap
 201         */
 202        if (machine__is_host(machine))
 203                misc = PERF_RECORD_MISC_KERNEL;
 204        else
 205                misc = PERF_RECORD_MISC_GUEST_KERNEL;
 206
 207        for (nd = rb_first(&kmaps->maps[MAP__FUNCTION]);
 208             nd; nd = rb_next(nd)) {
 209                event_t ev;
 210                size_t size;
 211                struct map *pos = rb_entry(nd, struct map, rb_node);
 212
 213                if (pos->dso->kernel)
 214                        continue;
 215
 216                size = ALIGN(pos->dso->long_name_len + 1, sizeof(u64));
 217                memset(&ev, 0, sizeof(ev));
 218                ev.mmap.header.misc = misc;
 219                ev.mmap.header.type = PERF_RECORD_MMAP;
 220                ev.mmap.header.size = (sizeof(ev.mmap) -
 221                                        (sizeof(ev.mmap.filename) - size));
 222                ev.mmap.start = pos->start;
 223                ev.mmap.len   = pos->end - pos->start;
 224                ev.mmap.pid   = machine->pid;
 225
 226                memcpy(ev.mmap.filename, pos->dso->long_name,
 227                       pos->dso->long_name_len + 1);
 228                process(&ev, session);
 229        }
 230
 231        return 0;
 232}
 233
 234int event__synthesize_thread(pid_t pid, event__handler_t process,
 235                             struct perf_session *session)
 236{
 237        pid_t tgid = event__synthesize_comm(pid, 1, process, session);
 238        if (tgid == -1)
 239                return -1;
 240        return event__synthesize_mmap_events(pid, tgid, process, session);
 241}
 242
 243void event__synthesize_threads(event__handler_t process,
 244                               struct perf_session *session)
 245{
 246        DIR *proc;
 247        struct dirent dirent, *next;
 248
 249        proc = opendir("/proc");
 250
 251        while (!readdir_r(proc, &dirent, &next) && next) {
 252                char *end;
 253                pid_t pid = strtol(dirent.d_name, &end, 10);
 254
 255                if (*end) /* only interested in proper numerical dirents */
 256                        continue;
 257
 258                event__synthesize_thread(pid, process, session);
 259        }
 260
 261        closedir(proc);
 262}
 263
 264struct process_symbol_args {
 265        const char *name;
 266        u64        start;
 267};
 268
 269static int find_symbol_cb(void *arg, const char *name, char type, u64 start)
 270{
 271        struct process_symbol_args *args = arg;
 272
 273        /*
 274         * Must be a function or at least an alias, as in PARISC64, where "_text" is
 275         * an 'A' to the same address as "_stext".
 276         */
 277        if (!(symbol_type__is_a(type, MAP__FUNCTION) ||
 278              type == 'A') || strcmp(name, args->name))
 279                return 0;
 280
 281        args->start = start;
 282        return 1;
 283}
 284
 285int event__synthesize_kernel_mmap(event__handler_t process,
 286                                  struct perf_session *session,
 287                                  struct machine *machine,
 288                                  const char *symbol_name)
 289{
 290        size_t size;
 291        const char *filename, *mmap_name;
 292        char path[PATH_MAX];
 293        char name_buff[PATH_MAX];
 294        struct map *map;
 295
 296        event_t ev = {
 297                .header = {
 298                        .type = PERF_RECORD_MMAP,
 299                },
 300        };
 301        /*
 302         * We should get this from /sys/kernel/sections/.text, but till that is
 303         * available use this, and after it is use this as a fallback for older
 304         * kernels.
 305         */
 306        struct process_symbol_args args = { .name = symbol_name, };
 307
 308        mmap_name = machine__mmap_name(machine, name_buff, sizeof(name_buff));
 309        if (machine__is_host(machine)) {
 310                /*
 311                 * kernel uses PERF_RECORD_MISC_USER for user space maps,
 312                 * see kernel/perf_event.c __perf_event_mmap
 313                 */
 314                ev.header.misc = PERF_RECORD_MISC_KERNEL;
 315                filename = "/proc/kallsyms";
 316        } else {
 317                ev.header.misc = PERF_RECORD_MISC_GUEST_KERNEL;
 318                if (machine__is_default_guest(machine))
 319                        filename = (char *) symbol_conf.default_guest_kallsyms;
 320                else {
 321                        sprintf(path, "%s/proc/kallsyms", machine->root_dir);
 322                        filename = path;
 323                }
 324        }
 325
 326        if (kallsyms__parse(filename, &args, find_symbol_cb) <= 0)
 327                return -ENOENT;
 328
 329        map = machine->vmlinux_maps[MAP__FUNCTION];
 330        size = snprintf(ev.mmap.filename, sizeof(ev.mmap.filename),
 331                        "%s%s", mmap_name, symbol_name) + 1;
 332        size = ALIGN(size, sizeof(u64));
 333        ev.mmap.header.size = (sizeof(ev.mmap) -
 334                        (sizeof(ev.mmap.filename) - size));
 335        ev.mmap.pgoff = args.start;
 336        ev.mmap.start = map->start;
 337        ev.mmap.len   = map->end - ev.mmap.start;
 338        ev.mmap.pid   = machine->pid;
 339
 340        return process(&ev, session);
 341}
 342
 343static void thread__comm_adjust(struct thread *self)
 344{
 345        char *comm = self->comm;
 346
 347        if (!symbol_conf.col_width_list_str && !symbol_conf.field_sep &&
 348            (!symbol_conf.comm_list ||
 349             strlist__has_entry(symbol_conf.comm_list, comm))) {
 350                unsigned int slen = strlen(comm);
 351
 352                if (slen > comms__col_width) {
 353                        comms__col_width = slen;
 354                        threads__col_width = slen + 6;
 355                }
 356        }
 357}
 358
 359static int thread__set_comm_adjust(struct thread *self, const char *comm)
 360{
 361        int ret = thread__set_comm(self, comm);
 362
 363        if (ret)
 364                return ret;
 365
 366        thread__comm_adjust(self);
 367
 368        return 0;
 369}
 370
 371int event__process_comm(event_t *self, struct perf_session *session)
 372{
 373        struct thread *thread = perf_session__findnew(session, self->comm.tid);
 374
 375        dump_printf(": %s:%d\n", self->comm.comm, self->comm.tid);
 376
 377        if (thread == NULL || thread__set_comm_adjust(thread, self->comm.comm)) {
 378                dump_printf("problem processing PERF_RECORD_COMM, skipping event.\n");
 379                return -1;
 380        }
 381
 382        return 0;
 383}
 384
 385int event__process_lost(event_t *self, struct perf_session *session)
 386{
 387        dump_printf(": id:%Ld: lost:%Ld\n", self->lost.id, self->lost.lost);
 388        session->hists.stats.total_lost += self->lost.lost;
 389        return 0;
 390}
 391
 392static void event_set_kernel_mmap_len(struct map **maps, event_t *self)
 393{
 394        maps[MAP__FUNCTION]->start = self->mmap.start;
 395        maps[MAP__FUNCTION]->end   = self->mmap.start + self->mmap.len;
 396        /*
 397         * Be a bit paranoid here, some perf.data file came with
 398         * a zero sized synthesized MMAP event for the kernel.
 399         */
 400        if (maps[MAP__FUNCTION]->end == 0)
 401                maps[MAP__FUNCTION]->end = ~0UL;
 402}
 403
 404static int event__process_kernel_mmap(event_t *self,
 405                        struct perf_session *session)
 406{
 407        struct map *map;
 408        char kmmap_prefix[PATH_MAX];
 409        struct machine *machine;
 410        enum dso_kernel_type kernel_type;
 411        bool is_kernel_mmap;
 412
 413        machine = perf_session__findnew_machine(session, self->mmap.pid);
 414        if (!machine) {
 415                pr_err("Can't find id %d's machine\n", self->mmap.pid);
 416                goto out_problem;
 417        }
 418
 419        machine__mmap_name(machine, kmmap_prefix, sizeof(kmmap_prefix));
 420        if (machine__is_host(machine))
 421                kernel_type = DSO_TYPE_KERNEL;
 422        else
 423                kernel_type = DSO_TYPE_GUEST_KERNEL;
 424
 425        is_kernel_mmap = memcmp(self->mmap.filename,
 426                                kmmap_prefix,
 427                                strlen(kmmap_prefix)) == 0;
 428        if (self->mmap.filename[0] == '/' ||
 429            (!is_kernel_mmap && self->mmap.filename[0] == '[')) {
 430
 431                char short_module_name[1024];
 432                char *name, *dot;
 433
 434                if (self->mmap.filename[0] == '/') {
 435                        name = strrchr(self->mmap.filename, '/');
 436                        if (name == NULL)
 437                                goto out_problem;
 438
 439                        ++name; /* skip / */
 440                        dot = strrchr(name, '.');
 441                        if (dot == NULL)
 442                                goto out_problem;
 443                        snprintf(short_module_name, sizeof(short_module_name),
 444                                        "[%.*s]", (int)(dot - name), name);
 445                        strxfrchar(short_module_name, '-', '_');
 446                } else
 447                        strcpy(short_module_name, self->mmap.filename);
 448
 449                map = machine__new_module(machine, self->mmap.start,
 450                                          self->mmap.filename);
 451                if (map == NULL)
 452                        goto out_problem;
 453
 454                name = strdup(short_module_name);
 455                if (name == NULL)
 456                        goto out_problem;
 457
 458                map->dso->short_name = name;
 459                map->end = map->start + self->mmap.len;
 460        } else if (is_kernel_mmap) {
 461                const char *symbol_name = (self->mmap.filename +
 462                                strlen(kmmap_prefix));
 463                /*
 464                 * Should be there already, from the build-id table in
 465                 * the header.
 466                 */
 467                struct dso *kernel = __dsos__findnew(&machine->kernel_dsos,
 468                                                     kmmap_prefix);
 469                if (kernel == NULL)
 470                        goto out_problem;
 471
 472                kernel->kernel = kernel_type;
 473                if (__machine__create_kernel_maps(machine, kernel) < 0)
 474                        goto out_problem;
 475
 476                event_set_kernel_mmap_len(machine->vmlinux_maps, self);
 477                perf_session__set_kallsyms_ref_reloc_sym(machine->vmlinux_maps,
 478                                                         symbol_name,
 479                                                         self->mmap.pgoff);
 480                if (machine__is_default_guest(machine)) {
 481                        /*
 482                         * preload dso of guest kernel and modules
 483                         */
 484                        dso__load(kernel, machine->vmlinux_maps[MAP__FUNCTION],
 485                                  NULL);
 486                }
 487        }
 488        return 0;
 489out_problem:
 490        return -1;
 491}
 492
 493int event__process_mmap(event_t *self, struct perf_session *session)
 494{
 495        struct machine *machine;
 496        struct thread *thread;
 497        struct map *map;
 498        u8 cpumode = self->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
 499        int ret = 0;
 500
 501        dump_printf(" %d/%d: [%#Lx(%#Lx) @ %#Lx]: %s\n",
 502                        self->mmap.pid, self->mmap.tid, self->mmap.start,
 503                        self->mmap.len, self->mmap.pgoff, self->mmap.filename);
 504
 505        if (cpumode == PERF_RECORD_MISC_GUEST_KERNEL ||
 506            cpumode == PERF_RECORD_MISC_KERNEL) {
 507                ret = event__process_kernel_mmap(self, session);
 508                if (ret < 0)
 509                        goto out_problem;
 510                return 0;
 511        }
 512
 513        machine = perf_session__find_host_machine(session);
 514        if (machine == NULL)
 515                goto out_problem;
 516        thread = perf_session__findnew(session, self->mmap.pid);
 517        map = map__new(&machine->user_dsos, self->mmap.start,
 518                        self->mmap.len, self->mmap.pgoff,
 519                        self->mmap.pid, self->mmap.filename,
 520                        MAP__FUNCTION, session->cwd, session->cwdlen);
 521
 522        if (thread == NULL || map == NULL)
 523                goto out_problem;
 524
 525        thread__insert_map(thread, map);
 526        return 0;
 527
 528out_problem:
 529        dump_printf("problem processing PERF_RECORD_MMAP, skipping event.\n");
 530        return 0;
 531}
 532
 533int event__process_task(event_t *self, struct perf_session *session)
 534{
 535        struct thread *thread = perf_session__findnew(session, self->fork.tid);
 536        struct thread *parent = perf_session__findnew(session, self->fork.ptid);
 537
 538        dump_printf("(%d:%d):(%d:%d)\n", self->fork.pid, self->fork.tid,
 539                    self->fork.ppid, self->fork.ptid);
 540
 541        if (self->header.type == PERF_RECORD_EXIT) {
 542                perf_session__remove_thread(session, thread);
 543                return 0;
 544        }
 545
 546        if (thread == NULL || parent == NULL ||
 547            thread__fork(thread, parent) < 0) {
 548                dump_printf("problem processing PERF_RECORD_FORK, skipping event.\n");
 549                return -1;
 550        }
 551
 552        return 0;
 553}
 554
 555void thread__find_addr_map(struct thread *self,
 556                           struct perf_session *session, u8 cpumode,
 557                           enum map_type type, pid_t pid, u64 addr,
 558                           struct addr_location *al)
 559{
 560        struct map_groups *mg = &self->mg;
 561        struct machine *machine = NULL;
 562
 563        al->thread = self;
 564        al->addr = addr;
 565        al->cpumode = cpumode;
 566        al->filtered = false;
 567
 568        if (cpumode == PERF_RECORD_MISC_KERNEL && perf_host) {
 569                al->level = 'k';
 570                machine = perf_session__find_host_machine(session);
 571                if (machine == NULL) {
 572                        al->map = NULL;
 573                        return;
 574                }
 575                mg = &machine->kmaps;
 576        } else if (cpumode == PERF_RECORD_MISC_USER && perf_host) {
 577                al->level = '.';
 578                machine = perf_session__find_host_machine(session);
 579        } else if (cpumode == PERF_RECORD_MISC_GUEST_KERNEL && perf_guest) {
 580                al->level = 'g';
 581                machine = perf_session__find_machine(session, pid);
 582                if (machine == NULL) {
 583                        al->map = NULL;
 584                        return;
 585                }
 586                mg = &machine->kmaps;
 587        } else {
 588                /*
 589                 * 'u' means guest os user space.
 590                 * TODO: We don't support guest user space. Might support late.
 591                 */
 592                if (cpumode == PERF_RECORD_MISC_GUEST_USER && perf_guest)
 593                        al->level = 'u';
 594                else
 595                        al->level = 'H';
 596                al->map = NULL;
 597
 598                if ((cpumode == PERF_RECORD_MISC_GUEST_USER ||
 599                        cpumode == PERF_RECORD_MISC_GUEST_KERNEL) &&
 600                        !perf_guest)
 601                        al->filtered = true;
 602                if ((cpumode == PERF_RECORD_MISC_USER ||
 603                        cpumode == PERF_RECORD_MISC_KERNEL) &&
 604                        !perf_host)
 605                        al->filtered = true;
 606
 607                return;
 608        }
 609try_again:
 610        al->map = map_groups__find(mg, type, al->addr);
 611        if (al->map == NULL) {
 612                /*
 613                 * If this is outside of all known maps, and is a negative
 614                 * address, try to look it up in the kernel dso, as it might be
 615                 * a vsyscall or vdso (which executes in user-mode).
 616                 *
 617                 * XXX This is nasty, we should have a symbol list in the
 618                 * "[vdso]" dso, but for now lets use the old trick of looking
 619                 * in the whole kernel symbol list.
 620                 */
 621                if ((long long)al->addr < 0 &&
 622                    cpumode == PERF_RECORD_MISC_KERNEL &&
 623                    machine && mg != &machine->kmaps) {
 624                        mg = &machine->kmaps;
 625                        goto try_again;
 626                }
 627        } else
 628                al->addr = al->map->map_ip(al->map, al->addr);
 629}
 630
 631void thread__find_addr_location(struct thread *self,
 632                                struct perf_session *session, u8 cpumode,
 633                                enum map_type type, pid_t pid, u64 addr,
 634                                struct addr_location *al,
 635                                symbol_filter_t filter)
 636{
 637        thread__find_addr_map(self, session, cpumode, type, pid, addr, al);
 638        if (al->map != NULL)
 639                al->sym = map__find_symbol(al->map, al->addr, filter);
 640        else
 641                al->sym = NULL;
 642}
 643
 644static void dso__calc_col_width(struct dso *self)
 645{
 646        if (!symbol_conf.col_width_list_str && !symbol_conf.field_sep &&
 647            (!symbol_conf.dso_list ||
 648             strlist__has_entry(symbol_conf.dso_list, self->name))) {
 649                u16 slen = self->short_name_len;
 650                if (verbose)
 651                        slen = self->long_name_len;
 652                if (dsos__col_width < slen)
 653                        dsos__col_width = slen;
 654        }
 655
 656        self->slen_calculated = 1;
 657}
 658
 659int event__preprocess_sample(const event_t *self, struct perf_session *session,
 660                             struct addr_location *al, symbol_filter_t filter)
 661{
 662        u8 cpumode = self->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
 663        struct thread *thread = perf_session__findnew(session, self->ip.pid);
 664
 665        if (thread == NULL)
 666                return -1;
 667
 668        if (symbol_conf.comm_list &&
 669            !strlist__has_entry(symbol_conf.comm_list, thread->comm))
 670                goto out_filtered;
 671
 672        dump_printf(" ... thread: %s:%d\n", thread->comm, thread->pid);
 673        /*
 674         * Have we already created the kernel maps for the host machine?
 675         *
 676         * This should have happened earlier, when we processed the kernel MMAP
 677         * events, but for older perf.data files there was no such thing, so do
 678         * it now.
 679         */
 680        if (cpumode == PERF_RECORD_MISC_KERNEL &&
 681            session->host_machine.vmlinux_maps[MAP__FUNCTION] == NULL)
 682                machine__create_kernel_maps(&session->host_machine);
 683
 684        thread__find_addr_map(thread, session, cpumode, MAP__FUNCTION,
 685                              self->ip.pid, self->ip.ip, al);
 686        dump_printf(" ...... dso: %s\n",
 687                    al->map ? al->map->dso->long_name :
 688                        al->level == 'H' ? "[hypervisor]" : "<not found>");
 689        al->sym = NULL;
 690
 691        if (al->map) {
 692                if (symbol_conf.dso_list &&
 693                    (!al->map || !al->map->dso ||
 694                     !(strlist__has_entry(symbol_conf.dso_list,
 695                                          al->map->dso->short_name) ||
 696                       (al->map->dso->short_name != al->map->dso->long_name &&
 697                        strlist__has_entry(symbol_conf.dso_list,
 698                                           al->map->dso->long_name)))))
 699                        goto out_filtered;
 700                /*
 701                 * We have to do this here as we may have a dso with no symbol
 702                 * hit that has a name longer than the ones with symbols
 703                 * sampled.
 704                 */
 705                if (!sort_dso.elide && !al->map->dso->slen_calculated)
 706                        dso__calc_col_width(al->map->dso);
 707
 708                al->sym = map__find_symbol(al->map, al->addr, filter);
 709        } else {
 710                const unsigned int unresolved_col_width = BITS_PER_LONG / 4;
 711
 712                if (dsos__col_width < unresolved_col_width &&
 713                    !symbol_conf.col_width_list_str && !symbol_conf.field_sep &&
 714                    !symbol_conf.dso_list)
 715                        dsos__col_width = unresolved_col_width;
 716        }
 717
 718        if (symbol_conf.sym_list && al->sym &&
 719            !strlist__has_entry(symbol_conf.sym_list, al->sym->name))
 720                goto out_filtered;
 721
 722        return 0;
 723
 724out_filtered:
 725        al->filtered = true;
 726        return 0;
 727}
 728
 729int event__parse_sample(event_t *event, u64 type, struct sample_data *data)
 730{
 731        u64 *array = event->sample.array;
 732
 733        if (type & PERF_SAMPLE_IP) {
 734                data->ip = event->ip.ip;
 735                array++;
 736        }
 737
 738        if (type & PERF_SAMPLE_TID) {
 739                u32 *p = (u32 *)array;
 740                data->pid = p[0];
 741                data->tid = p[1];
 742                array++;
 743        }
 744
 745        if (type & PERF_SAMPLE_TIME) {
 746                data->time = *array;
 747                array++;
 748        }
 749
 750        if (type & PERF_SAMPLE_ADDR) {
 751                data->addr = *array;
 752                array++;
 753        }
 754
 755        data->id = -1ULL;
 756        if (type & PERF_SAMPLE_ID) {
 757                data->id = *array;
 758                array++;
 759        }
 760
 761        if (type & PERF_SAMPLE_STREAM_ID) {
 762                data->stream_id = *array;
 763                array++;
 764        }
 765
 766        if (type & PERF_SAMPLE_CPU) {
 767                u32 *p = (u32 *)array;
 768                data->cpu = *p;
 769                array++;
 770        }
 771
 772        if (type & PERF_SAMPLE_PERIOD) {
 773                data->period = *array;
 774                array++;
 775        }
 776
 777        if (type & PERF_SAMPLE_READ) {
 778                pr_debug("PERF_SAMPLE_READ is unsuported for now\n");
 779                return -1;
 780        }
 781
 782        if (type & PERF_SAMPLE_CALLCHAIN) {
 783                data->callchain = (struct ip_callchain *)array;
 784                array += 1 + data->callchain->nr;
 785        }
 786
 787        if (type & PERF_SAMPLE_RAW) {
 788                u32 *p = (u32 *)array;
 789                data->raw_size = *p;
 790                p++;
 791                data->raw_data = p;
 792        }
 793
 794        return 0;
 795}
 796
lxr.linux.no kindly hosted by Redpill Linpro AS, provider of Linux consulting and operations services since 1995.