tools/perf/util/session.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 #include <errno.h>
   3 #include <signal.h>
   4 #include <inttypes.h>
   5 #include <linux/err.h>
   6 #include <linux/kernel.h>
   7 #include <linux/zalloc.h>
   8 #include <api/fs/fs.h>
   9
  10 #include <byteswap.h>
  11 #include <unistd.h>
  12 #include <sys/types.h>
  13 #include <sys/mman.h>
  14 #include <perf/cpumap.h>
  15
  16 #include "map_symbol.h"
  17 #include "branch.h"
  18 #include "debug.h"
  19 #include "env.h"
  20 #include "evlist.h"
  21 #include "evsel.h"
  22 #include "memswap.h"
  23 #include "map.h"
  24 #include "symbol.h"
  25 #include "session.h"
  26 #include "tool.h"
  27 #include "perf_regs.h"
  28 #include "asm/bug.h"
  29 #include "auxtrace.h"
  30 #include "thread.h"
  31 #include "thread-stack.h"
  32 #include "sample-raw.h"
  33 #include "stat.h"
  34 #include "tsc.h"
  35 #include "ui/progress.h"
  36 #include "util.h"
  37 #include "arch/common.h"
  38 #include "units.h"
  39 #include "annotate.h"
  40 #include <internal/lib.h>
  41
  42 static int perf_session__deliver_event(struct perf_session *session,
  43                                        union perf_event *event,
  44                                        const struct perf_tool *tool,
  45                                        u64 file_offset,
  46                                        const char *file_path);
  47
  48 static int perf_session__open(struct perf_session *session)
  49 {
  50         struct perf_data *data = session->data;
  51
  52         if (perf_session__read_header(session) < 0) {
  53                 pr_err("incompatible file format (rerun with -v to learn more)\n");
  54                 return -1;
  55         }
  56
  57         if (perf_header__has_feat(&session->header, HEADER_AUXTRACE)) {
  58                 /* Auxiliary events may reference exited threads, hold onto dead ones. */
  59                 symbol_conf.keep_exited_threads = true;
  60         }
  61
  62         if (perf_data__is_pipe(data))
  63                 return 0;
  64
  65         if (perf_header__has_feat(&session->header, HEADER_STAT))
  66                 return 0;
  67
  68         if (!evlist__valid_sample_type(session->evlist)) {
  69                 pr_err("non matching sample_type\n");
  70                 return -1;
  71         }
  72
  73         if (!evlist__valid_sample_id_all(session->evlist)) {
  74                 pr_err("non matching sample_id_all\n");
  75                 return -1;
  76         }
  77
  78         if (!evlist__valid_read_format(session->evlist)) {
  79                 pr_err("non matching read_format\n");
  80                 return -1;
  81         }
  82
  83         return 0;
  84 }
  85
  86 void perf_session__set_id_hdr_size(struct perf_session *session)
  87 {
  88         u16 id_hdr_size = evlist__id_hdr_size(session->evlist);
  89
  90         machines__set_id_hdr_size(&session->machines, id_hdr_size);
  91 }
  92
  93 int perf_session__create_kernel_maps(struct perf_session *session)
  94 {
  95         int ret = machine__create_kernel_maps(&session->machines.host);
  96
  97         if (ret >= 0)
  98                 ret = machines__create_guest_kernel_maps(&session->machines);
  99         return ret;
 100 }
 101
 102 static void perf_session__destroy_kernel_maps(struct perf_session *session)
 103 {
 104         machines__destroy_kernel_maps(&session->machines);
 105 }
 106
 107 static bool perf_session__has_comm_exec(struct perf_session *session)
 108 {
 109         struct evsel *evsel;
 110
 111         evlist__for_each_entry(session->evlist, evsel) {
 112                 if (evsel->core.attr.comm_exec)
 113                         return true;
 114         }
 115
 116         return false;
 117 }
 118
 119 static void perf_session__set_comm_exec(struct perf_session *session)
 120 {
 121         bool comm_exec = perf_session__has_comm_exec(session);
 122
 123         machines__set_comm_exec(&session->machines, comm_exec);
 124 }
 125
 126 static int ordered_events__deliver_event(struct ordered_events *oe,
 127                                          struct ordered_event *event)
 128 {
 129         struct perf_session *session = container_of(oe, struct perf_session,
 130                                                     ordered_events);
 131
 132         return perf_session__deliver_event(session, event->event,
 133                                            session->tool, event->file_offset,
 134                                            event->file_path);
 135 }
 136
 137 struct perf_session *__perf_session__new(struct perf_data *data,
 138                                          struct perf_tool *tool,
 139                                          bool trace_event_repipe)
 140 {
 141         int ret = -ENOMEM;
 142         struct perf_session *session = zalloc(sizeof(*session));
 143
 144         if (!session)
 145                 goto out;
 146
 147         session->trace_event_repipe = trace_event_repipe;
 148         session->tool   = tool;
 149         session->decomp_data.zstd_decomp = &session->zstd_data;
 150         session->active_decomp = &session->decomp_data;
 151         INIT_LIST_HEAD(&session->auxtrace_index);
 152         machines__init(&session->machines);
 153         ordered_events__init(&session->ordered_events,
 154                              ordered_events__deliver_event, NULL);
 155
 156         perf_env__init(&session->header.env);
 157         if (data) {
 158                 ret = perf_data__open(data);
 159                 if (ret < 0)
 160                         goto out_delete;
 161
 162                 session->data = data;
 163
 164                 if (perf_data__is_read(data)) {
 165                         ret = perf_session__open(session);
 166                         if (ret < 0)
 167                                 goto out_delete;
 168
 169                         /*
 170                          * set session attributes that are present in perf.data
 171                          * but not in pipe-mode.
 172                          */
 173                         if (!data->is_pipe) {
 174                                 perf_session__set_id_hdr_size(session);
 175                                 perf_session__set_comm_exec(session);
 176                         }
 177
 178                         evlist__init_trace_event_sample_raw(session->evlist);
 179
 180                         /* Open the directory data. */
 181                         if (data->is_dir) {
 182                                 ret = perf_data__open_dir(data);
 183                                 if (ret)
 184                                         goto out_delete;
 185                         }
 186
 187                         if (!symbol_conf.kallsyms_name &&
 188                             !symbol_conf.vmlinux_name)
 189                                 symbol_conf.kallsyms_name = perf_data__kallsyms_name(data);
 190                 }
 191         } else  {
 192                 session->machines.host.env = &perf_env;
 193         }
 194
 195         session->machines.host.single_address_space =
 196                 perf_env__single_address_space(session->machines.host.env);
 197
 198         if (!data || perf_data__is_write(data)) {
 199                 /*
 200                  * In O_RDONLY mode this will be performed when reading the
 201                  * kernel MMAP event, in perf_event__process_mmap().
 202                  */
 203                 if (perf_session__create_kernel_maps(session) < 0)
 204                         pr_warning("Cannot read kernel map\n");
 205         }
 206
 207         /*
 208          * In pipe-mode, evlist is empty until PERF_RECORD_HEADER_ATTR is
 209          * processed, so evlist__sample_id_all is not meaningful here.
 210          */
 211         if ((!data || !data->is_pipe) && tool && tool->ordering_requires_timestamps &&
 212             tool->ordered_events && !evlist__sample_id_all(session->evlist)) {
 213                 dump_printf("WARNING: No sample_id_all support, falling back to unordered processing\n");
 214                 tool->ordered_events = false;
 215         }
 216
 217         return session;
 218
 219  out_delete:
 220         perf_session__delete(session);
 221  out:
 222         return ERR_PTR(ret);
 223 }
 224
 225 static void perf_decomp__release_events(struct decomp *next)
 226 {
 227         struct decomp *decomp;
 228         size_t mmap_len;
 229
 230         do {
 231                 decomp = next;
 232                 if (decomp == NULL)
 233                         break;
 234                 next = decomp->next;
 235                 mmap_len = decomp->mmap_len;
 236                 munmap(decomp, mmap_len);
 237         } while (1);
 238 }
 239
 240 void perf_session__delete(struct perf_session *session)
 241 {
 242         if (session == NULL)
 243                 return;
 244         auxtrace__free(session);
 245         auxtrace_index__free(&session->auxtrace_index);
 246         debuginfo_cache__delete();
 247         perf_session__destroy_kernel_maps(session);
 248         perf_decomp__release_events(session->decomp_data.decomp);
 249         perf_env__exit(&session->header.env);
 250         machines__exit(&session->machines);
 251         if (session->data) {
 252                 if (perf_data__is_read(session->data))
 253                         evlist__delete(session->evlist);
 254                 perf_data__close(session->data);
 255         }
 256 #ifdef HAVE_LIBTRACEEVENT
 257         trace_event__cleanup(&session->tevent);
 258 #endif
 259         free(session);
 260 }
 261
 262 static void swap_sample_id_all(union perf_event *event, void *data)
 263 {
 264         void *end = (void *) event + event->header.size;
 265         int size = end - data;
 266
 267         BUG_ON(size % sizeof(u64));
 268         mem_bswap_64(data, size);
 269 }
 270
 271 static void perf_event__all64_swap(union perf_event *event,
 272                                    bool sample_id_all __maybe_unused)
 273 {
 274         struct perf_event_header *hdr = &event->header;
 275         mem_bswap_64(hdr + 1, event->header.size - sizeof(*hdr));
 276 }
 277
 278 static void perf_event__comm_swap(union perf_event *event, bool sample_id_all)
 279 {
 280         event->comm.pid = bswap_32(event->comm.pid);
 281         event->comm.tid = bswap_32(event->comm.tid);
 282
 283         if (sample_id_all) {
 284                 void *data = &event->comm.comm;
 285
 286                 data += PERF_ALIGN(strlen(data) + 1, sizeof(u64));
 287                 swap_sample_id_all(event, data);
 288         }
 289 }
 290
 291 static void perf_event__mmap_swap(union perf_event *event,
 292                                   bool sample_id_all)
 293 {
 294         event->mmap.pid   = bswap_32(event->mmap.pid);
 295         event->mmap.tid   = bswap_32(event->mmap.tid);
 296         event->mmap.start = bswap_64(event->mmap.start);
 297         event->mmap.len   = bswap_64(event->mmap.len);
 298         event->mmap.pgoff = bswap_64(event->mmap.pgoff);
 299
 300         if (sample_id_all) {
 301                 void *data = &event->mmap.filename;
 302
 303                 data += PERF_ALIGN(strlen(data) + 1, sizeof(u64));
 304                 swap_sample_id_all(event, data);
 305         }
 306 }
 307
 308 static void perf_event__mmap2_swap(union perf_event *event,
 309                                   bool sample_id_all)
 310 {
 311         event->mmap2.pid   = bswap_32(event->mmap2.pid);
 312         event->mmap2.tid   = bswap_32(event->mmap2.tid);
 313         event->mmap2.start = bswap_64(event->mmap2.start);
 314         event->mmap2.len   = bswap_64(event->mmap2.len);
 315         event->mmap2.pgoff = bswap_64(event->mmap2.pgoff);
 316
 317         if (!(event->header.misc & PERF_RECORD_MISC_MMAP_BUILD_ID)) {
 318                 event->mmap2.maj   = bswap_32(event->mmap2.maj);
 319                 event->mmap2.min   = bswap_32(event->mmap2.min);
 320                 event->mmap2.ino   = bswap_64(event->mmap2.ino);
 321                 event->mmap2.ino_generation = bswap_64(event->mmap2.ino_generation);
 322         }
 323
 324         if (sample_id_all) {
 325                 void *data = &event->mmap2.filename;
 326
 327                 data += PERF_ALIGN(strlen(data) + 1, sizeof(u64));
 328                 swap_sample_id_all(event, data);
 329         }
 330 }
 331 static void perf_event__task_swap(union perf_event *event, bool sample_id_all)
 332 {
 333         event->fork.pid  = bswap_32(event->fork.pid);
 334         event->fork.tid  = bswap_32(event->fork.tid);
 335         event->fork.ppid = bswap_32(event->fork.ppid);
 336         event->fork.ptid = bswap_32(event->fork.ptid);
 337         event->fork.time = bswap_64(event->fork.time);
 338
 339         if (sample_id_all)
 340                 swap_sample_id_all(event, &event->fork + 1);
 341 }
 342
 343 static void perf_event__read_swap(union perf_event *event, bool sample_id_all)
 344 {
 345         event->read.pid          = bswap_32(event->read.pid);
 346         event->read.tid          = bswap_32(event->read.tid);
 347         event->read.value        = bswap_64(event->read.value);
 348         event->read.time_enabled = bswap_64(event->read.time_enabled);
 349         event->read.time_running = bswap_64(event->read.time_running);
 350         event->read.id           = bswap_64(event->read.id);
 351
 352         if (sample_id_all)
 353                 swap_sample_id_all(event, &event->read + 1);
 354 }
 355
 356 static void perf_event__aux_swap(union perf_event *event, bool sample_id_all)
 357 {
 358         event->aux.aux_offset = bswap_64(event->aux.aux_offset);
 359         event->aux.aux_size   = bswap_64(event->aux.aux_size);
 360         event->aux.flags      = bswap_64(event->aux.flags);
 361
 362         if (sample_id_all)
 363                 swap_sample_id_all(event, &event->aux + 1);
 364 }
 365
 366 static void perf_event__itrace_start_swap(union perf_event *event,
 367                                           bool sample_id_all)
 368 {
 369         event->itrace_start.pid  = bswap_32(event->itrace_start.pid);
 370         event->itrace_start.tid  = bswap_32(event->itrace_start.tid);
 371
 372         if (sample_id_all)
 373                 swap_sample_id_all(event, &event->itrace_start + 1);
 374 }
 375
 376 static void perf_event__switch_swap(union perf_event *event, bool sample_id_all)
 377 {
 378         if (event->header.type == PERF_RECORD_SWITCH_CPU_WIDE) {
 379                 event->context_switch.next_prev_pid =
 380                                 bswap_32(event->context_switch.next_prev_pid);
 381                 event->context_switch.next_prev_tid =
 382                                 bswap_32(event->context_switch.next_prev_tid);
 383         }
 384
 385         if (sample_id_all)
 386                 swap_sample_id_all(event, &event->context_switch + 1);
 387 }
 388
 389 static void perf_event__text_poke_swap(union perf_event *event, bool sample_id_all)
 390 {
 391         event->text_poke.addr    = bswap_64(event->text_poke.addr);
 392         event->text_poke.old_len = bswap_16(event->text_poke.old_len);
 393         event->text_poke.new_len = bswap_16(event->text_poke.new_len);
 394
 395         if (sample_id_all) {
 396                 size_t len = sizeof(event->text_poke.old_len) +
 397                              sizeof(event->text_poke.new_len) +
 398                              event->text_poke.old_len +
 399                              event->text_poke.new_len;
 400                 void *data = &event->text_poke.old_len;
 401
 402                 data += PERF_ALIGN(len, sizeof(u64));
 403                 swap_sample_id_all(event, data);
 404         }
 405 }
 406
 407 static void perf_event__throttle_swap(union perf_event *event,
 408                                       bool sample_id_all)
 409 {
 410         event->throttle.time      = bswap_64(event->throttle.time);
 411         event->throttle.id        = bswap_64(event->throttle.id);
 412         event->throttle.stream_id = bswap_64(event->throttle.stream_id);
 413
 414         if (sample_id_all)
 415                 swap_sample_id_all(event, &event->throttle + 1);
 416 }
 417
 418 static void perf_event__namespaces_swap(union perf_event *event,
 419                                         bool sample_id_all)
 420 {
 421         u64 i;
 422
 423         event->namespaces.pid           = bswap_32(event->namespaces.pid);
 424         event->namespaces.tid           = bswap_32(event->namespaces.tid);
 425         event->namespaces.nr_namespaces = bswap_64(event->namespaces.nr_namespaces);
 426
 427         for (i = 0; i < event->namespaces.nr_namespaces; i++) {
 428                 struct perf_ns_link_info *ns = &event->namespaces.link_info[i];
 429
 430                 ns->dev = bswap_64(ns->dev);
 431                 ns->ino = bswap_64(ns->ino);
 432         }
 433
 434         if (sample_id_all)
 435                 swap_sample_id_all(event, &event->namespaces.link_info[i]);
 436 }
 437
 438 static void perf_event__cgroup_swap(union perf_event *event, bool sample_id_all)
 439 {
 440         event->cgroup.id = bswap_64(event->cgroup.id);
 441
 442         if (sample_id_all) {
 443                 void *data = &event->cgroup.path;
 444
 445                 data += PERF_ALIGN(strlen(data) + 1, sizeof(u64));
 446                 swap_sample_id_all(event, data);
 447         }
 448 }
 449
 450 static u8 revbyte(u8 b)
 451 {
 452         int rev = (b >> 4) | ((b & 0xf) << 4);
 453         rev = ((rev & 0xcc) >> 2) | ((rev & 0x33) << 2);
 454         rev = ((rev & 0xaa) >> 1) | ((rev & 0x55) << 1);
 455         return (u8) rev;
 456 }
 457
 458 /*
 459  * XXX this is hack in attempt to carry flags bitfield
 460  * through endian village. ABI says:
 461  *
 462  * Bit-fields are allocated from right to left (least to most significant)
 463  * on little-endian implementations and from left to right (most to least
 464  * significant) on big-endian implementations.
 465  *
 466  * The above seems to be byte specific, so we need to reverse each
 467  * byte of the bitfield. 'Internet' also says this might be implementation
 468  * specific and we probably need proper fix and carry perf_event_attr
 469  * bitfield flags in separate data file FEAT_ section. Thought this seems
 470  * to work for now.
 471  */
 472 static void swap_bitfield(u8 *p, unsigned len)
 473 {
 474         unsigned i;
 475
 476         for (i = 0; i < len; i++) {
 477                 *p = revbyte(*p);
 478                 p++;
 479         }
 480 }
 481
 482 /* exported for swapping attributes in file header */
 483 void perf_event__attr_swap(struct perf_event_attr *attr)
 484 {
 485         attr->type              = bswap_32(attr->type);
 486         attr->size              = bswap_32(attr->size);
 487
 488 #define bswap_safe(f, n)                                        \
 489         (attr->size > (offsetof(struct perf_event_attr, f) +    \
 490                        sizeof(attr->f) * (n)))
 491 #define bswap_field(f, sz)                      \
 492 do {                                            \
 493         if (bswap_safe(f, 0))                   \
 494                 attr->f = bswap_##sz(attr->f);  \
 495 } while(0)
 496 #define bswap_field_16(f) bswap_field(f, 16)
 497 #define bswap_field_32(f) bswap_field(f, 32)
 498 #define bswap_field_64(f) bswap_field(f, 64)
 499
 500         bswap_field_64(config);
 501         bswap_field_64(sample_period);
 502         bswap_field_64(sample_type);
 503         bswap_field_64(read_format);
 504         bswap_field_32(wakeup_events);
 505         bswap_field_32(bp_type);
 506         bswap_field_64(bp_addr);
 507         bswap_field_64(bp_len);
 508         bswap_field_64(branch_sample_type);
 509         bswap_field_64(sample_regs_user);
 510         bswap_field_32(sample_stack_user);
 511         bswap_field_32(aux_watermark);
 512         bswap_field_16(sample_max_stack);
 513         bswap_field_32(aux_sample_size);
 514
 515         /*
 516          * After read_format are bitfields. Check read_format because
 517          * we are unable to use offsetof on bitfield.
 518          */
 519         if (bswap_safe(read_format, 1))
 520                 swap_bitfield((u8 *) (&attr->read_format + 1),
 521                               sizeof(u64));
 522 #undef bswap_field_64
 523 #undef bswap_field_32
 524 #undef bswap_field
 525 #undef bswap_safe
 526 }
 527
 528 static void perf_event__hdr_attr_swap(union perf_event *event,
 529                                       bool sample_id_all __maybe_unused)
 530 {
 531         size_t size;
 532
 533         perf_event__attr_swap(&event->attr.attr);
 534
 535         size = event->header.size;
 536         size -= perf_record_header_attr_id(event) - (void *)event;
 537         mem_bswap_64(perf_record_header_attr_id(event), size);
 538 }
 539
 540 static void perf_event__event_update_swap(union perf_event *event,
 541                                           bool sample_id_all __maybe_unused)
 542 {
 543         event->event_update.type = bswap_64(event->event_update.type);
 544         event->event_update.id   = bswap_64(event->event_update.id);
 545 }
 546
 547 static void perf_event__event_type_swap(union perf_event *event,
 548                                         bool sample_id_all __maybe_unused)
 549 {
 550         event->event_type.event_type.event_id =
 551                 bswap_64(event->event_type.event_type.event_id);
 552 }
 553
 554 static void perf_event__tracing_data_swap(union perf_event *event,
 555                                           bool sample_id_all __maybe_unused)
 556 {
 557         event->tracing_data.size = bswap_32(event->tracing_data.size);
 558 }
 559
 560 static void perf_event__auxtrace_info_swap(union perf_event *event,
 561                                            bool sample_id_all __maybe_unused)
 562 {
 563         size_t size;
 564
 565         event->auxtrace_info.type = bswap_32(event->auxtrace_info.type);
 566
 567         size = event->header.size;
 568         size -= (void *)&event->auxtrace_info.priv - (void *)event;
 569         mem_bswap_64(event->auxtrace_info.priv, size);
 570 }
 571
 572 static void perf_event__auxtrace_swap(union perf_event *event,
 573                                       bool sample_id_all __maybe_unused)
 574 {
 575         event->auxtrace.size      = bswap_64(event->auxtrace.size);
 576         event->auxtrace.offset    = bswap_64(event->auxtrace.offset);
 577         event->auxtrace.reference = bswap_64(event->auxtrace.reference);
 578         event->auxtrace.idx       = bswap_32(event->auxtrace.idx);
 579         event->auxtrace.tid       = bswap_32(event->auxtrace.tid);
 580         event->auxtrace.cpu       = bswap_32(event->auxtrace.cpu);
 581 }
 582
 583 static void perf_event__auxtrace_error_swap(union perf_event *event,
 584                                             bool sample_id_all __maybe_unused)
 585 {
 586         event->auxtrace_error.type = bswap_32(event->auxtrace_error.type);
 587         event->auxtrace_error.code = bswap_32(event->auxtrace_error.code);
 588         event->auxtrace_error.cpu  = bswap_32(event->auxtrace_error.cpu);
 589         event->auxtrace_error.pid  = bswap_32(event->auxtrace_error.pid);
 590         event->auxtrace_error.tid  = bswap_32(event->auxtrace_error.tid);
 591         event->auxtrace_error.fmt  = bswap_32(event->auxtrace_error.fmt);
 592         event->auxtrace_error.ip   = bswap_64(event->auxtrace_error.ip);
 593         if (event->auxtrace_error.fmt)
 594                 event->auxtrace_error.time = bswap_64(event->auxtrace_error.time);
 595         if (event->auxtrace_error.fmt >= 2) {
 596                 event->auxtrace_error.machine_pid = bswap_32(event->auxtrace_error.machine_pid);
 597                 event->auxtrace_error.vcpu = bswap_32(event->auxtrace_error.vcpu);
 598         }
 599 }
 600
 601 static void perf_event__thread_map_swap(union perf_event *event,
 602                                         bool sample_id_all __maybe_unused)
 603 {
 604         unsigned i;
 605
 606         event->thread_map.nr = bswap_64(event->thread_map.nr);
 607
 608         for (i = 0; i < event->thread_map.nr; i++)
 609                 event->thread_map.entries[i].pid = bswap_64(event->thread_map.entries[i].pid);
 610 }
 611
 612 static void perf_event__cpu_map_swap(union perf_event *event,
 613                                      bool sample_id_all __maybe_unused)
 614 {
 615         struct perf_record_cpu_map_data *data = &event->cpu_map.data;
 616
 617         data->type = bswap_16(data->type);
 618
 619         switch (data->type) {
 620         case PERF_CPU_MAP__CPUS:
 621                 data->cpus_data.nr = bswap_16(data->cpus_data.nr);
 622
 623                 for (unsigned i = 0; i < data->cpus_data.nr; i++)
 624                         data->cpus_data.cpu[i] = bswap_16(data->cpus_data.cpu[i]);
 625                 break;
 626         case PERF_CPU_MAP__MASK:
 627                 data->mask32_data.long_size = bswap_16(data->mask32_data.long_size);
 628
 629                 switch (data->mask32_data.long_size) {
 630                 case 4:
 631                         data->mask32_data.nr = bswap_16(data->mask32_data.nr);
 632                         for (unsigned i = 0; i < data->mask32_data.nr; i++)
 633                                 data->mask32_data.mask[i] = bswap_32(data->mask32_data.mask[i]);
 634                         break;
 635                 case 8:
 636                         data->mask64_data.nr = bswap_16(data->mask64_data.nr);
 637                         for (unsigned i = 0; i < data->mask64_data.nr; i++)
 638                                 data->mask64_data.mask[i] = bswap_64(data->mask64_data.mask[i]);
 639                         break;
 640                 default:
 641                         pr_err("cpu_map swap: unsupported long size\n");
 642                 }
 643                 break;
 644         case PERF_CPU_MAP__RANGE_CPUS:
 645                 data->range_cpu_data.start_cpu = bswap_16(data->range_cpu_data.start_cpu);
 646                 data->range_cpu_data.end_cpu = bswap_16(data->range_cpu_data.end_cpu);
 647                 break;
 648         default:
 649                 break;
 650         }
 651 }
 652
 653 static void perf_event__stat_config_swap(union perf_event *event,
 654                                          bool sample_id_all __maybe_unused)
 655 {
 656         u64 size;
 657
 658         size  = bswap_64(event->stat_config.nr) * sizeof(event->stat_config.data[0]);
 659         size += 1; /* nr item itself */
 660         mem_bswap_64(&event->stat_config.nr, size);
 661 }
 662
 663 static void perf_event__stat_swap(union perf_event *event,
 664                                   bool sample_id_all __maybe_unused)
 665 {
 666         event->stat.id     = bswap_64(event->stat.id);
 667         event->stat.thread = bswap_32(event->stat.thread);
 668         event->stat.cpu    = bswap_32(event->stat.cpu);
 669         event->stat.val    = bswap_64(event->stat.val);
 670         event->stat.ena    = bswap_64(event->stat.ena);
 671         event->stat.run    = bswap_64(event->stat.run);
 672 }
 673
 674 static void perf_event__stat_round_swap(union perf_event *event,
 675                                         bool sample_id_all __maybe_unused)
 676 {
 677         event->stat_round.type = bswap_64(event->stat_round.type);
 678         event->stat_round.time = bswap_64(event->stat_round.time);
 679 }
 680
 681 static void perf_event__time_conv_swap(union perf_event *event,
 682                                        bool sample_id_all __maybe_unused)
 683 {
 684         event->time_conv.time_shift = bswap_64(event->time_conv.time_shift);
 685         event->time_conv.time_mult  = bswap_64(event->time_conv.time_mult);
 686         event->time_conv.time_zero  = bswap_64(event->time_conv.time_zero);
 687
 688         if (event_contains(event->time_conv, time_cycles)) {
 689                 event->time_conv.time_cycles = bswap_64(event->time_conv.time_cycles);
 690                 event->time_conv.time_mask = bswap_64(event->time_conv.time_mask);
 691         }
 692 }
 693
 694 typedef void (*perf_event__swap_op)(union perf_event *event,
 695                                     bool sample_id_all);
 696
 697 static perf_event__swap_op perf_event__swap_ops[] = {
 698         [PERF_RECORD_MMAP]                = perf_event__mmap_swap,
 699         [PERF_RECORD_MMAP2]               = perf_event__mmap2_swap,
 700         [PERF_RECORD_COMM]                = perf_event__comm_swap,
 701         [PERF_RECORD_FORK]                = perf_event__task_swap,
 702         [PERF_RECORD_EXIT]                = perf_event__task_swap,
 703         [PERF_RECORD_LOST]                = perf_event__all64_swap,
 704         [PERF_RECORD_READ]                = perf_event__read_swap,
 705         [PERF_RECORD_THROTTLE]            = perf_event__throttle_swap,
 706         [PERF_RECORD_UNTHROTTLE]          = perf_event__throttle_swap,
 707         [PERF_RECORD_SAMPLE]              = perf_event__all64_swap,
 708         [PERF_RECORD_AUX]                 = perf_event__aux_swap,
 709         [PERF_RECORD_ITRACE_START]        = perf_event__itrace_start_swap,
 710         [PERF_RECORD_LOST_SAMPLES]        = perf_event__all64_swap,
 711         [PERF_RECORD_SWITCH]              = perf_event__switch_swap,
 712         [PERF_RECORD_SWITCH_CPU_WIDE]     = perf_event__switch_swap,
 713         [PERF_RECORD_NAMESPACES]          = perf_event__namespaces_swap,
 714         [PERF_RECORD_CGROUP]              = perf_event__cgroup_swap,
 715         [PERF_RECORD_TEXT_POKE]           = perf_event__text_poke_swap,
 716         [PERF_RECORD_AUX_OUTPUT_HW_ID]    = perf_event__all64_swap,
 717         [PERF_RECORD_HEADER_ATTR]         = perf_event__hdr_attr_swap,
 718         [PERF_RECORD_HEADER_EVENT_TYPE]   = perf_event__event_type_swap,
 719         [PERF_RECORD_HEADER_TRACING_DATA] = perf_event__tracing_data_swap,
 720         [PERF_RECORD_HEADER_BUILD_ID]     = NULL,
 721         [PERF_RECORD_ID_INDEX]            = perf_event__all64_swap,
 722         [PERF_RECORD_AUXTRACE_INFO]       = perf_event__auxtrace_info_swap,
 723         [PERF_RECORD_AUXTRACE]            = perf_event__auxtrace_swap,
 724         [PERF_RECORD_AUXTRACE_ERROR]      = perf_event__auxtrace_error_swap,
 725         [PERF_RECORD_THREAD_MAP]          = perf_event__thread_map_swap,
 726         [PERF_RECORD_CPU_MAP]             = perf_event__cpu_map_swap,
 727         [PERF_RECORD_STAT_CONFIG]         = perf_event__stat_config_swap,
 728         [PERF_RECORD_STAT]                = perf_event__stat_swap,
 729         [PERF_RECORD_STAT_ROUND]          = perf_event__stat_round_swap,
 730         [PERF_RECORD_EVENT_UPDATE]        = perf_event__event_update_swap,
 731         [PERF_RECORD_TIME_CONV]           = perf_event__time_conv_swap,
 732         [PERF_RECORD_HEADER_MAX]          = NULL,
 733 };
 734
 735 /*
 736  * When perf record finishes a pass on every buffers, it records this pseudo
 737  * event.
 738  * We record the max timestamp t found in the pass n.
 739  * Assuming these timestamps are monotonic across cpus, we know that if
 740  * a buffer still has events with timestamps below t, they will be all
 741  * available and then read in the pass n + 1.
 742  * Hence when we start to read the pass n + 2, we can safely flush every
 743  * events with timestamps below t.
 744  *
 745  *    ============ PASS n =================
 746  *       CPU 0         |   CPU 1
 747  *                     |
 748  *    cnt1 timestamps  |   cnt2 timestamps
 749  *          1          |         2
 750  *          2          |         3
 751  *          -          |         4  <--- max recorded
 752  *
 753  *    ============ PASS n + 1 ==============
 754  *       CPU 0         |   CPU 1
 755  *                     |
 756  *    cnt1 timestamps  |   cnt2 timestamps
 757  *          3          |         5
 758  *          4          |         6
 759  *          5          |         7 <---- max recorded
 760  *
 761  *      Flush every events below timestamp 4
 762  *
 763  *    ============ PASS n + 2 ==============
 764  *       CPU 0         |   CPU 1
 765  *                     |
 766  *    cnt1 timestamps  |   cnt2 timestamps
 767  *          6          |         8
 768  *          7          |         9
 769  *          -          |         10
 770  *
 771  *      Flush every events below timestamp 7
 772  *      etc...
 773  */
 774 int perf_event__process_finished_round(const struct perf_tool *tool __maybe_unused,
 775                                        union perf_event *event __maybe_unused,
 776                                        struct ordered_events *oe)
 777 {
 778         if (dump_trace)
 779                 fprintf(stdout, "\n");
 780         return ordered_events__flush(oe, OE_FLUSH__ROUND);
 781 }
 782
 783 int perf_session__queue_event(struct perf_session *s, union perf_event *event,
 784                               u64 timestamp, u64 file_offset, const char *file_path)
 785 {
 786         return ordered_events__queue(&s->ordered_events, event, timestamp, file_offset, file_path);
 787 }
 788
 789 static void callchain__lbr_callstack_printf(struct perf_sample *sample)
 790 {
 791         struct ip_callchain *callchain = sample->callchain;
 792         struct branch_stack *lbr_stack = sample->branch_stack;
 793         struct branch_entry *entries = perf_sample__branch_entries(sample);
 794         u64 kernel_callchain_nr = callchain->nr;
 795         unsigned int i;
 796
 797         for (i = 0; i < kernel_callchain_nr; i++) {
 798                 if (callchain->ips[i] == PERF_CONTEXT_USER)
 799                         break;
 800         }
 801
 802         if ((i != kernel_callchain_nr) && lbr_stack->nr) {
 803                 u64 total_nr;
 804                 /*
 805                  * LBR callstack can only get user call chain,
 806                  * i is kernel call chain number,
 807                  * 1 is PERF_CONTEXT_USER.
 808                  *
 809                  * The user call chain is stored in LBR registers.
 810                  * LBR are pair registers. The caller is stored
 811                  * in "from" register, while the callee is stored
 812                  * in "to" register.
 813                  * For example, there is a call stack
 814                  * "A"->"B"->"C"->"D".
 815                  * The LBR registers will be recorded like
 816                  * "C"->"D", "B"->"C", "A"->"B".
 817                  * So only the first "to" register and all "from"
 818                  * registers are needed to construct the whole stack.
 819                  */
 820                 total_nr = i + 1 + lbr_stack->nr + 1;
 821                 kernel_callchain_nr = i + 1;
 822
 823                 printf("... LBR call chain: nr:%" PRIu64 "\n", total_nr);
 824
 825                 for (i = 0; i < kernel_callchain_nr; i++)
 826                         printf("..... %2d: %016" PRIx64 "\n",
 827                                i, callchain->ips[i]);
 828
 829                 printf("..... %2d: %016" PRIx64 "\n",
 830                        (int)(kernel_callchain_nr), entries[0].to);
 831                 for (i = 0; i < lbr_stack->nr; i++)
 832                         printf("..... %2d: %016" PRIx64 "\n",
 833                                (int)(i + kernel_callchain_nr + 1), entries[i].from);
 834         }
 835 }
 836
 837 static void callchain__printf(struct evsel *evsel,
 838                               struct perf_sample *sample)
 839 {
 840         unsigned int i;
 841         struct ip_callchain *callchain = sample->callchain;
 842
 843         if (evsel__has_branch_callstack(evsel))
 844                 callchain__lbr_callstack_printf(sample);
 845
 846         printf("... FP chain: nr:%" PRIu64 "\n", callchain->nr);
 847
 848         for (i = 0; i < callchain->nr; i++)
 849                 printf("..... %2d: %016" PRIx64 "\n",
 850                        i, callchain->ips[i]);
 851 }
 852
 853 static void branch_stack__printf(struct perf_sample *sample,
 854                                  struct evsel *evsel)
 855 {
 856         struct branch_entry *entries = perf_sample__branch_entries(sample);
 857         bool callstack = evsel__has_branch_callstack(evsel);
 858         u64 *branch_stack_cntr = sample->branch_stack_cntr;
 859         uint64_t i;
 860
 861         if (!callstack) {
 862                 printf("%s: nr:%" PRIu64 "\n", "... branch stack", sample->branch_stack->nr);
 863         } else {
 864                 /* the reason of adding 1 to nr is because after expanding
 865                  * branch stack it generates nr + 1 callstack records. e.g.,
 866                  *         B()->C()
 867                  *         A()->B()
 868                  * the final callstack should be:
 869                  *         C()
 870                  *         B()
 871                  *         A()
 872                  */
 873                 printf("%s: nr:%" PRIu64 "\n", "... branch callstack", sample->branch_stack->nr+1);
 874         }
 875
 876         for (i = 0; i < sample->branch_stack->nr; i++) {
 877                 struct branch_entry *e = &entries[i];
 878
 879                 if (!callstack) {
 880                         printf("..... %2"PRIu64": %016" PRIx64 " -> %016" PRIx64 " %hu cycles %s%s%s%s %x %s %s\n",
 881                                 i, e->from, e->to,
 882                                 (unsigned short)e->flags.cycles,
 883                                 e->flags.mispred ? "M" : " ",
 884                                 e->flags.predicted ? "P" : " ",
 885                                 e->flags.abort ? "A" : " ",
 886                                 e->flags.in_tx ? "T" : " ",
 887                                 (unsigned)e->flags.reserved,
 888                                 get_branch_type(e),
 889                                 e->flags.spec ? branch_spec_desc(e->flags.spec) : "");
 890                 } else {
 891                         if (i == 0) {
 892                                 printf("..... %2"PRIu64": %016" PRIx64 "\n"
 893                                        "..... %2"PRIu64": %016" PRIx64 "\n",
 894                                                 i, e->to, i+1, e->from);
 895                         } else {
 896                                 printf("..... %2"PRIu64": %016" PRIx64 "\n", i+1, e->from);
 897                         }
 898                 }
 899         }
 900
 901         if (branch_stack_cntr) {
 902                 unsigned int br_cntr_width, br_cntr_nr;
 903
 904                 perf_env__find_br_cntr_info(evsel__env(evsel), &br_cntr_nr, &br_cntr_width);
 905                 printf("... branch stack counters: nr:%" PRIu64 " (counter width: %u max counter nr:%u)\n",
 906                         sample->branch_stack->nr, br_cntr_width, br_cntr_nr);
 907                 for (i = 0; i < sample->branch_stack->nr; i++)
 908                         printf("..... %2"PRIu64": %016" PRIx64 "\n", i, branch_stack_cntr[i]);
 909         }
 910 }
 911
 912 static void regs_dump__printf(u64 mask, u64 *regs, const char *arch)
 913 {
 914         unsigned rid, i = 0;
 915
 916         for_each_set_bit(rid, (unsigned long *) &mask, sizeof(mask) * 8) {
 917                 u64 val = regs[i++];
 918
 919                 printf(".... %-5s 0x%016" PRIx64 "\n",
 920                        perf_reg_name(rid, arch), val);
 921         }
 922 }
 923
 924 static const char *regs_abi[] = {
 925         [PERF_SAMPLE_REGS_ABI_NONE] = "none",
 926         [PERF_SAMPLE_REGS_ABI_32] = "32-bit",
 927         [PERF_SAMPLE_REGS_ABI_64] = "64-bit",
 928 };
 929
 930 static inline const char *regs_dump_abi(struct regs_dump *d)
 931 {
 932         if (d->abi > PERF_SAMPLE_REGS_ABI_64)
 933                 return "unknown";
 934
 935         return regs_abi[d->abi];
 936 }
 937
 938 static void regs__printf(const char *type, struct regs_dump *regs, const char *arch)
 939 {
 940         u64 mask = regs->mask;
 941
 942         printf("... %s regs: mask 0x%" PRIx64 " ABI %s\n",
 943                type,
 944                mask,
 945                regs_dump_abi(regs));
 946
 947         regs_dump__printf(mask, regs->regs, arch);
 948 }
 949
 950 static void regs_user__printf(struct perf_sample *sample, const char *arch)
 951 {
 952         struct regs_dump *user_regs = &sample->user_regs;
 953
 954         if (user_regs->regs)
 955                 regs__printf("user", user_regs, arch);
 956 }
 957
 958 static void regs_intr__printf(struct perf_sample *sample, const char *arch)
 959 {
 960         struct regs_dump *intr_regs = &sample->intr_regs;
 961
 962         if (intr_regs->regs)
 963                 regs__printf("intr", intr_regs, arch);
 964 }
 965
 966 static void stack_user__printf(struct stack_dump *dump)
 967 {
 968         printf("... ustack: size %" PRIu64 ", offset 0x%x\n",
 969                dump->size, dump->offset);
 970 }
 971
 972 static void evlist__print_tstamp(struct evlist *evlist, union perf_event *event, struct perf_sample *sample)
 973 {
 974         u64 sample_type = __evlist__combined_sample_type(evlist);
 975
 976         if (event->header.type != PERF_RECORD_SAMPLE &&
 977             !evlist__sample_id_all(evlist)) {
 978                 fputs("-1 -1 ", stdout);
 979                 return;
 980         }
 981
 982         if ((sample_type & PERF_SAMPLE_CPU))
 983                 printf("%u ", sample->cpu);
 984
 985         if (sample_type & PERF_SAMPLE_TIME)
 986                 printf("%" PRIu64 " ", sample->time);
 987 }
 988
 989 static void sample_read__printf(struct perf_sample *sample, u64 read_format)
 990 {
 991         printf("... sample_read:\n");
 992
 993         if (read_format & PERF_FORMAT_TOTAL_TIME_ENABLED)
 994                 printf("...... time enabled %016" PRIx64 "\n",
 995                        sample->read.time_enabled);
 996
 997         if (read_format & PERF_FORMAT_TOTAL_TIME_RUNNING)
 998                 printf("...... time running %016" PRIx64 "\n",
 999                        sample->read.time_running);
1000
1001         if (read_format & PERF_FORMAT_GROUP) {
1002                 struct sample_read_value *value = sample->read.group.values;
1003
1004                 printf(".... group nr %" PRIu64 "\n", sample->read.group.nr);
1005
1006                 sample_read_group__for_each(value, sample->read.group.nr, read_format) {
1007                         printf("..... id %016" PRIx64
1008                                ", value %016" PRIx64,
1009                                value->id, value->value);
1010                         if (read_format & PERF_FORMAT_LOST)
1011                                 printf(", lost %" PRIu64, value->lost);
1012                         printf("\n");
1013                 }
1014         } else {
1015                 printf("..... id %016" PRIx64 ", value %016" PRIx64,
1016                         sample->read.one.id, sample->read.one.value);
1017                 if (read_format & PERF_FORMAT_LOST)
1018                         printf(", lost %" PRIu64, sample->read.one.lost);
1019                 printf("\n");
1020         }
1021 }
1022
1023 static void dump_event(struct evlist *evlist, union perf_event *event,
1024                        u64 file_offset, struct perf_sample *sample,
1025                        const char *file_path)
1026 {
1027         if (!dump_trace)
1028                 return;
1029
1030         printf("\n%#" PRIx64 "@%s [%#x]: event: %d\n",
1031                file_offset, file_path, event->header.size, event->header.type);
1032
1033         trace_event(event);
1034         if (event->header.type == PERF_RECORD_SAMPLE && evlist->trace_event_sample_raw)
1035                 evlist->trace_event_sample_raw(evlist, event, sample);
1036
1037         if (sample)
1038                 evlist__print_tstamp(evlist, event, sample);
1039
1040         printf("%#" PRIx64 " [%#x]: PERF_RECORD_%s", file_offset,
1041                event->header.size, perf_event__name(event->header.type));
1042 }
1043
1044 char *get_page_size_name(u64 size, char *str)
1045 {
1046         if (!size || !unit_number__scnprintf(str, PAGE_SIZE_NAME_LEN, size))
1047                 snprintf(str, PAGE_SIZE_NAME_LEN, "%s", "N/A");
1048
1049         return str;
1050 }
1051
1052 static void dump_sample(struct evsel *evsel, union perf_event *event,
1053                         struct perf_sample *sample, const char *arch)
1054 {
1055         u64 sample_type;
1056         char str[PAGE_SIZE_NAME_LEN];
1057
1058         if (!dump_trace)
1059                 return;
1060
1061         printf("(IP, 0x%x): %d/%d: %#" PRIx64 " period: %" PRIu64 " addr: %#" PRIx64 "\n",
1062                event->header.misc, sample->pid, sample->tid, sample->ip,
1063                sample->period, sample->addr);
1064
1065         sample_type = evsel->core.attr.sample_type;
1066
1067         if (evsel__has_callchain(evsel))
1068                 callchain__printf(evsel, sample);
1069
1070         if (evsel__has_br_stack(evsel))
1071                 branch_stack__printf(sample, evsel);
1072
1073         if (sample_type & PERF_SAMPLE_REGS_USER)
1074                 regs_user__printf(sample, arch);
1075
1076         if (sample_type & PERF_SAMPLE_REGS_INTR)
1077                 regs_intr__printf(sample, arch);
1078
1079         if (sample_type & PERF_SAMPLE_STACK_USER)
1080                 stack_user__printf(&sample->user_stack);
1081
1082         if (sample_type & PERF_SAMPLE_WEIGHT_TYPE) {
1083                 printf("... weight: %" PRIu64 "", sample->weight);
1084                         if (sample_type & PERF_SAMPLE_WEIGHT_STRUCT) {
1085                                 printf(",0x%"PRIx16"", sample->ins_lat);
1086                                 printf(",0x%"PRIx16"", sample->p_stage_cyc);
1087                         }
1088                 printf("\n");
1089         }
1090
1091         if (sample_type & PERF_SAMPLE_DATA_SRC)
1092                 printf(" . data_src: 0x%"PRIx64"\n", sample->data_src);
1093
1094         if (sample_type & PERF_SAMPLE_PHYS_ADDR)
1095                 printf(" .. phys_addr: 0x%"PRIx64"\n", sample->phys_addr);
1096
1097         if (sample_type & PERF_SAMPLE_DATA_PAGE_SIZE)
1098                 printf(" .. data page size: %s\n", get_page_size_name(sample->data_page_size, str));
1099
1100         if (sample_type & PERF_SAMPLE_CODE_PAGE_SIZE)
1101                 printf(" .. code page size: %s\n", get_page_size_name(sample->code_page_size, str));
1102
1103         if (sample_type & PERF_SAMPLE_TRANSACTION)
1104                 printf("... transaction: %" PRIx64 "\n", sample->transaction);
1105
1106         if (sample_type & PERF_SAMPLE_READ)
1107                 sample_read__printf(sample, evsel->core.attr.read_format);
1108 }
1109
1110 static void dump_read(struct evsel *evsel, union perf_event *event)
1111 {
1112         struct perf_record_read *read_event = &event->read;
1113         u64 read_format;
1114
1115         if (!dump_trace)
1116                 return;
1117
1118         printf(": %d %d %s %" PRI_lu64 "\n", event->read.pid, event->read.tid,
1119                evsel__name(evsel), event->read.value);
1120
1121         if (!evsel)
1122                 return;
1123
1124         read_format = evsel->core.attr.read_format;
1125
1126         if (read_format & PERF_FORMAT_TOTAL_TIME_ENABLED)
1127                 printf("... time enabled : %" PRI_lu64 "\n", read_event->time_enabled);
1128
1129         if (read_format & PERF_FORMAT_TOTAL_TIME_RUNNING)
1130                 printf("... time running : %" PRI_lu64 "\n", read_event->time_running);
1131
1132         if (read_format & PERF_FORMAT_ID)
1133                 printf("... id           : %" PRI_lu64 "\n", read_event->id);
1134
1135         if (read_format & PERF_FORMAT_LOST)
1136                 printf("... lost         : %" PRI_lu64 "\n", read_event->lost);
1137 }
1138
1139 static struct machine *machines__find_for_cpumode(struct machines *machines,
1140                                                union perf_event *event,
1141                                                struct perf_sample *sample)
1142 {
1143         if (perf_guest &&
1144             ((sample->cpumode == PERF_RECORD_MISC_GUEST_KERNEL) ||
1145              (sample->cpumode == PERF_RECORD_MISC_GUEST_USER))) {
1146                 u32 pid;
1147
1148                 if (sample->machine_pid)
1149                         pid = sample->machine_pid;
1150                 else if (event->header.type == PERF_RECORD_MMAP
1151                     || event->header.type == PERF_RECORD_MMAP2)
1152                         pid = event->mmap.pid;
1153                 else
1154                         pid = sample->pid;
1155
1156                 /*
1157                  * Guest code machine is created as needed and does not use
1158                  * DEFAULT_GUEST_KERNEL_ID.
1159                  */
1160                 if (symbol_conf.guest_code)
1161                         return machines__findnew(machines, pid);
1162
1163                 return machines__find_guest(machines, pid);
1164         }
1165
1166         return &machines->host;
1167 }
1168
1169 static int deliver_sample_value(struct evlist *evlist,
1170                                 const struct perf_tool *tool,
1171                                 union perf_event *event,
1172                                 struct perf_sample *sample,
1173                                 struct sample_read_value *v,
1174                                 struct machine *machine,
1175                                 bool per_thread)
1176 {
1177         struct perf_sample_id *sid = evlist__id2sid(evlist, v->id);
1178         struct evsel *evsel;
1179         u64 *storage = NULL;
1180
1181         if (sid) {
1182                 storage = perf_sample_id__get_period_storage(sid, sample->tid, per_thread);
1183         }
1184
1185         if (storage) {
1186                 sample->id     = v->id;
1187                 sample->period = v->value - *storage;
1188                 *storage       = v->value;
1189         }
1190
1191         if (!storage || sid->evsel == NULL) {
1192                 ++evlist->stats.nr_unknown_id;
1193                 return 0;
1194         }
1195
1196         /*
1197          * There's no reason to deliver sample
1198          * for zero period, bail out.
1199          */
1200         if (!sample->period)
1201                 return 0;
1202
1203         evsel = container_of(sid->evsel, struct evsel, core);
1204         return tool->sample(tool, event, sample, evsel, machine);
1205 }
1206
1207 static int deliver_sample_group(struct evlist *evlist,
1208                                 const struct perf_tool *tool,
1209                                 union  perf_event *event,
1210                                 struct perf_sample *sample,
1211                                 struct machine *machine,
1212                                 u64 read_format,
1213                                 bool per_thread)
1214 {
1215         int ret = -EINVAL;
1216         struct sample_read_value *v = sample->read.group.values;
1217
1218         if (tool->dont_split_sample_group)
1219                 return deliver_sample_value(evlist, tool, event, sample, v, machine,
1220                                             per_thread);
1221
1222         sample_read_group__for_each(v, sample->read.group.nr, read_format) {
1223                 ret = deliver_sample_value(evlist, tool, event, sample, v,
1224                                            machine, per_thread);
1225                 if (ret)
1226                         break;
1227         }
1228
1229         return ret;
1230 }
1231
1232 static int evlist__deliver_sample(struct evlist *evlist, const struct perf_tool *tool,
1233                                   union  perf_event *event, struct perf_sample *sample,
1234                                   struct evsel *evsel, struct machine *machine)
1235 {
1236         /* We know evsel != NULL. */
1237         u64 sample_type = evsel->core.attr.sample_type;
1238         u64 read_format = evsel->core.attr.read_format;
1239         bool per_thread = perf_evsel__attr_has_per_thread_sample_period(&evsel->core);
1240
1241         /* Standard sample delivery. */
1242         if (!(sample_type & PERF_SAMPLE_READ))
1243                 return tool->sample(tool, event, sample, evsel, machine);
1244
1245         /* For PERF_SAMPLE_READ we have either single or group mode. */
1246         if (read_format & PERF_FORMAT_GROUP)
1247                 return deliver_sample_group(evlist, tool, event, sample,
1248                                             machine, read_format, per_thread);
1249         else
1250                 return deliver_sample_value(evlist, tool, event, sample,
1251                                             &sample->read.one, machine,
1252                                             per_thread);
1253 }
1254
1255 static int machines__deliver_event(struct machines *machines,
1256                                    struct evlist *evlist,
1257                                    union perf_event *event,
1258                                    struct perf_sample *sample,
1259                                    const struct perf_tool *tool, u64 file_offset,
1260                                    const char *file_path)
1261 {
1262         struct evsel *evsel;
1263         struct machine *machine;
1264
1265         dump_event(evlist, event, file_offset, sample, file_path);
1266
1267         evsel = evlist__id2evsel(evlist, sample->id);
1268
1269         machine = machines__find_for_cpumode(machines, event, sample);
1270
1271         switch (event->header.type) {
1272         case PERF_RECORD_SAMPLE:
1273                 if (evsel == NULL) {
1274                         ++evlist->stats.nr_unknown_id;
1275                         return 0;
1276                 }
1277                 if (machine == NULL) {
1278                         ++evlist->stats.nr_unprocessable_samples;
1279                         dump_sample(evsel, event, sample, perf_env__arch(NULL));
1280                         return 0;
1281                 }
1282                 dump_sample(evsel, event, sample, perf_env__arch(machine->env));
1283                 return evlist__deliver_sample(evlist, tool, event, sample, evsel, machine);
1284         case PERF_RECORD_MMAP:
1285                 return tool->mmap(tool, event, sample, machine);
1286         case PERF_RECORD_MMAP2:
1287                 if (event->header.misc & PERF_RECORD_MISC_PROC_MAP_PARSE_TIMEOUT)
1288                         ++evlist->stats.nr_proc_map_timeout;
1289                 return tool->mmap2(tool, event, sample, machine);
1290         case PERF_RECORD_COMM:
1291                 return tool->comm(tool, event, sample, machine);
1292         case PERF_RECORD_NAMESPACES:
1293                 return tool->namespaces(tool, event, sample, machine);
1294         case PERF_RECORD_CGROUP:
1295                 return tool->cgroup(tool, event, sample, machine);
1296         case PERF_RECORD_FORK:
1297                 return tool->fork(tool, event, sample, machine);
1298         case PERF_RECORD_EXIT:
1299                 return tool->exit(tool, event, sample, machine);
1300         case PERF_RECORD_LOST:
1301                 if (tool->lost == perf_event__process_lost)
1302                         evlist->stats.total_lost += event->lost.lost;
1303                 return tool->lost(tool, event, sample, machine);
1304         case PERF_RECORD_LOST_SAMPLES:
1305                 if (event->header.misc & PERF_RECORD_MISC_LOST_SAMPLES_BPF)
1306                         evlist->stats.total_dropped_samples += event->lost_samples.lost;
1307                 else if (tool->lost_samples == perf_event__process_lost_samples)
1308                         evlist->stats.total_lost_samples += event->lost_samples.lost;
1309                 return tool->lost_samples(tool, event, sample, machine);
1310         case PERF_RECORD_READ:
1311                 dump_read(evsel, event);
1312                 return tool->read(tool, event, sample, evsel, machine);
1313         case PERF_RECORD_THROTTLE:
1314                 return tool->throttle(tool, event, sample, machine);
1315         case PERF_RECORD_UNTHROTTLE:
1316                 return tool->unthrottle(tool, event, sample, machine);
1317         case PERF_RECORD_AUX:
1318                 if (tool->aux == perf_event__process_aux) {
1319                         if (event->aux.flags & PERF_AUX_FLAG_TRUNCATED)
1320                                 evlist->stats.total_aux_lost += 1;
1321                         if (event->aux.flags & PERF_AUX_FLAG_PARTIAL)
1322                                 evlist->stats.total_aux_partial += 1;
1323                         if (event->aux.flags & PERF_AUX_FLAG_COLLISION)
1324                                 evlist->stats.total_aux_collision += 1;
1325                 }
1326                 return tool->aux(tool, event, sample, machine);
1327         case PERF_RECORD_ITRACE_START:
1328                 return tool->itrace_start(tool, event, sample, machine);
1329         case PERF_RECORD_SWITCH:
1330         case PERF_RECORD_SWITCH_CPU_WIDE:
1331                 return tool->context_switch(tool, event, sample, machine);
1332         case PERF_RECORD_KSYMBOL:
1333                 return tool->ksymbol(tool, event, sample, machine);
1334         case PERF_RECORD_BPF_EVENT:
1335                 return tool->bpf(tool, event, sample, machine);
1336         case PERF_RECORD_TEXT_POKE:
1337                 return tool->text_poke(tool, event, sample, machine);
1338         case PERF_RECORD_AUX_OUTPUT_HW_ID:
1339                 return tool->aux_output_hw_id(tool, event, sample, machine);
1340         default:
1341                 ++evlist->stats.nr_unknown_events;
1342                 return -1;
1343         }
1344 }
1345
1346 static int perf_session__deliver_event(struct perf_session *session,
1347                                        union perf_event *event,
1348                                        const struct perf_tool *tool,
1349                                        u64 file_offset,
1350                                        const char *file_path)
1351 {
1352         struct perf_sample sample;
1353         int ret = evlist__parse_sample(session->evlist, event, &sample);
1354
1355         if (ret) {
1356                 pr_err("Can't parse sample, err = %d\n", ret);
1357                 return ret;
1358         }
1359
1360         ret = auxtrace__process_event(session, event, &sample, tool);
1361         if (ret < 0)
1362                 return ret;
1363         if (ret > 0)
1364                 return 0;
1365
1366         ret = machines__deliver_event(&session->machines, session->evlist,
1367                                       event, &sample, tool, file_offset, file_path);
1368
1369         if (dump_trace && sample.aux_sample.size)
1370                 auxtrace__dump_auxtrace_sample(session, &sample);
1371
1372         return ret;
1373 }
1374
1375 static s64 perf_session__process_user_event(struct perf_session *session,
1376                                             union perf_event *event,
1377                                             u64 file_offset,
1378                                             const char *file_path)
1379 {
1380         struct ordered_events *oe = &session->ordered_events;
1381         const struct perf_tool *tool = session->tool;
1382         struct perf_sample sample = { .time = 0, };
1383         int fd = perf_data__fd(session->data);
1384         int err;
1385
1386         if (event->header.type != PERF_RECORD_COMPRESSED || perf_tool__compressed_is_stub(tool))
1387                 dump_event(session->evlist, event, file_offset, &sample, file_path);
1388
1389         /* These events are processed right away */
1390         switch (event->header.type) {
1391         case PERF_RECORD_HEADER_ATTR:
1392                 err = tool->attr(tool, event, &session->evlist);
1393                 if (err == 0) {
1394                         perf_session__set_id_hdr_size(session);
1395                         perf_session__set_comm_exec(session);
1396                 }
1397                 return err;
1398         case PERF_RECORD_EVENT_UPDATE:
1399                 return tool->event_update(tool, event, &session->evlist);
1400         case PERF_RECORD_HEADER_EVENT_TYPE:
1401                 /*
1402                  * Deprecated, but we need to handle it for sake
1403                  * of old data files create in pipe mode.
1404                  */
1405                 return 0;
1406         case PERF_RECORD_HEADER_TRACING_DATA:
1407                 /*
1408                  * Setup for reading amidst mmap, but only when we
1409                  * are in 'file' mode. The 'pipe' fd is in proper
1410                  * place already.
1411                  */
1412                 if (!perf_data__is_pipe(session->data))
1413                         lseek(fd, file_offset, SEEK_SET);
1414                 return tool->tracing_data(session, event);
1415         case PERF_RECORD_HEADER_BUILD_ID:
1416                 return tool->build_id(session, event);
1417         case PERF_RECORD_FINISHED_ROUND:
1418                 return tool->finished_round(tool, event, oe);
1419         case PERF_RECORD_ID_INDEX:
1420                 return tool->id_index(session, event);
1421         case PERF_RECORD_AUXTRACE_INFO:
1422                 return tool->auxtrace_info(session, event);
1423         case PERF_RECORD_AUXTRACE:
1424                 /*
1425                  * Setup for reading amidst mmap, but only when we
1426                  * are in 'file' mode.  The 'pipe' fd is in proper
1427                  * place already.
1428                  */
1429                 if (!perf_data__is_pipe(session->data))
1430                         lseek(fd, file_offset + event->header.size, SEEK_SET);
1431                 return tool->auxtrace(session, event);
1432         case PERF_RECORD_AUXTRACE_ERROR:
1433                 perf_session__auxtrace_error_inc(session, event);
1434                 return tool->auxtrace_error(session, event);
1435         case PERF_RECORD_THREAD_MAP:
1436                 return tool->thread_map(session, event);
1437         case PERF_RECORD_CPU_MAP:
1438                 return tool->cpu_map(session, event);
1439         case PERF_RECORD_STAT_CONFIG:
1440                 return tool->stat_config(session, event);
1441         case PERF_RECORD_STAT:
1442                 return tool->stat(session, event);
1443         case PERF_RECORD_STAT_ROUND:
1444                 return tool->stat_round(session, event);
1445         case PERF_RECORD_TIME_CONV:
1446                 session->time_conv = event->time_conv;
1447                 return tool->time_conv(session, event);
1448         case PERF_RECORD_HEADER_FEATURE:
1449                 return tool->feature(session, event);
1450         case PERF_RECORD_COMPRESSED:
1451                 err = tool->compressed(session, event, file_offset, file_path);
1452                 if (err)
1453                         dump_event(session->evlist, event, file_offset, &sample, file_path);
1454                 return err;
1455         case PERF_RECORD_FINISHED_INIT:
1456                 return tool->finished_init(session, event);
1457         default:
1458                 return -EINVAL;
1459         }
1460 }
1461
1462 int perf_session__deliver_synth_event(struct perf_session *session,
1463                                       union perf_event *event,
1464                                       struct perf_sample *sample)
1465 {
1466         struct evlist *evlist = session->evlist;
1467         const struct perf_tool *tool = session->tool;
1468
1469         events_stats__inc(&evlist->stats, event->header.type);
1470
1471         if (event->header.type >= PERF_RECORD_USER_TYPE_START)
1472                 return perf_session__process_user_event(session, event, 0, NULL);
1473
1474         return machines__deliver_event(&session->machines, evlist, event, sample, tool, 0, NULL);
1475 }
1476
1477 int perf_session__deliver_synth_attr_event(struct perf_session *session,
1478                                            const struct perf_event_attr *attr,
1479                                            u64 id)
1480 {
1481         union {
1482                 struct {
1483                         struct perf_record_header_attr attr;
1484                         u64 ids[1];
1485                 } attr_id;
1486                 union perf_event ev;
1487         } ev = {
1488                 .attr_id.attr.header.type = PERF_RECORD_HEADER_ATTR,
1489                 .attr_id.attr.header.size = sizeof(ev.attr_id),
1490                 .attr_id.ids[0] = id,
1491         };
1492
1493         if (attr->size != sizeof(ev.attr_id.attr.attr)) {
1494                 pr_debug("Unexpected perf_event_attr size\n");
1495                 return -EINVAL;
1496         }
1497         ev.attr_id.attr.attr = *attr;
1498         return perf_session__deliver_synth_event(session, &ev.ev, NULL);
1499 }
1500
1501 static void event_swap(union perf_event *event, bool sample_id_all)
1502 {
1503         perf_event__swap_op swap;
1504
1505         swap = perf_event__swap_ops[event->header.type];
1506         if (swap)
1507                 swap(event, sample_id_all);
1508 }
1509
1510 int perf_session__peek_event(struct perf_session *session, off_t file_offset,
1511                              void *buf, size_t buf_sz,
1512                              union perf_event **event_ptr,
1513                              struct perf_sample *sample)
1514 {
1515         union perf_event *event;
1516         size_t hdr_sz, rest;
1517         int fd;
1518
1519         if (session->one_mmap && !session->header.needs_swap) {
1520                 event = file_offset - session->one_mmap_offset +
1521                         session->one_mmap_addr;
1522                 goto out_parse_sample;
1523         }
1524
1525         if (perf_data__is_pipe(session->data))
1526                 return -1;
1527
1528         fd = perf_data__fd(session->data);
1529         hdr_sz = sizeof(struct perf_event_header);
1530
1531         if (buf_sz < hdr_sz)
1532                 return -1;
1533
1534         if (lseek(fd, file_offset, SEEK_SET) == (off_t)-1 ||
1535             readn(fd, buf, hdr_sz) != (ssize_t)hdr_sz)
1536                 return -1;
1537
1538         event = (union perf_event *)buf;
1539
1540         if (session->header.needs_swap)
1541                 perf_event_header__bswap(&event->header);
1542
1543         if (event->header.size < hdr_sz || event->header.size > buf_sz)
1544                 return -1;
1545
1546         buf += hdr_sz;
1547         rest = event->header.size - hdr_sz;
1548
1549         if (readn(fd, buf, rest) != (ssize_t)rest)
1550                 return -1;
1551
1552         if (session->header.needs_swap)
1553                 event_swap(event, evlist__sample_id_all(session->evlist));
1554
1555 out_parse_sample:
1556
1557         if (sample && event->header.type < PERF_RECORD_USER_TYPE_START &&
1558             evlist__parse_sample(session->evlist, event, sample))
1559                 return -1;
1560
1561         *event_ptr = event;
1562
1563         return 0;
1564 }
1565
1566 int perf_session__peek_events(struct perf_session *session, u64 offset,
1567                               u64 size, peek_events_cb_t cb, void *data)
1568 {
1569         u64 max_offset = offset + size;
1570         char buf[PERF_SAMPLE_MAX_SIZE];
1571         union perf_event *event;
1572         int err;
1573
1574         do {
1575                 err = perf_session__peek_event(session, offset, buf,
1576                                                PERF_SAMPLE_MAX_SIZE, &event,
1577                                                NULL);
1578                 if (err)
1579                         return err;
1580
1581                 err = cb(session, event, offset, data);
1582                 if (err)
1583                         return err;
1584
1585                 offset += event->header.size;
1586                 if (event->header.type == PERF_RECORD_AUXTRACE)
1587                         offset += event->auxtrace.size;
1588
1589         } while (offset < max_offset);
1590
1591         return err;
1592 }
1593
1594 static s64 perf_session__process_event(struct perf_session *session,
1595                                        union perf_event *event, u64 file_offset,
1596                                        const char *file_path)
1597 {
1598         struct evlist *evlist = session->evlist;
1599         const struct perf_tool *tool = session->tool;
1600         int ret;
1601
1602         if (session->header.needs_swap)
1603                 event_swap(event, evlist__sample_id_all(evlist));
1604
1605         if (event->header.type >= PERF_RECORD_HEADER_MAX)
1606                 return -EINVAL;
1607
1608         events_stats__inc(&evlist->stats, event->header.type);
1609
1610         if (event->header.type >= PERF_RECORD_USER_TYPE_START)
1611                 return perf_session__process_user_event(session, event, file_offset, file_path);
1612
1613         if (tool->ordered_events) {
1614                 u64 timestamp = -1ULL;
1615
1616                 ret = evlist__parse_sample_timestamp(evlist, event, &timestamp);
1617                 if (ret && ret != -1)
1618                         return ret;
1619
1620                 ret = perf_session__queue_event(session, event, timestamp, file_offset, file_path);
1621                 if (ret != -ETIME)
1622                         return ret;
1623         }
1624
1625         return perf_session__deliver_event(session, event, tool, file_offset, file_path);
1626 }
1627
1628 void perf_event_header__bswap(struct perf_event_header *hdr)
1629 {
1630         hdr->type = bswap_32(hdr->type);
1631         hdr->misc = bswap_16(hdr->misc);
1632         hdr->size = bswap_16(hdr->size);
1633 }
1634
1635 struct thread *perf_session__findnew(struct perf_session *session, pid_t pid)
1636 {
1637         return machine__findnew_thread(&session->machines.host, -1, pid);
1638 }
1639
1640 int perf_session__register_idle_thread(struct perf_session *session)
1641 {
1642         struct thread *thread = machine__idle_thread(&session->machines.host);
1643
1644         /* machine__idle_thread() got the thread, so put it */
1645         thread__put(thread);
1646         return thread ? 0 : -1;
1647 }
1648
1649 static void
1650 perf_session__warn_order(const struct perf_session *session)
1651 {
1652         const struct ordered_events *oe = &session->ordered_events;
1653         struct evsel *evsel;
1654         bool should_warn = true;
1655
1656         evlist__for_each_entry(session->evlist, evsel) {
1657                 if (evsel->core.attr.write_backward)
1658                         should_warn = false;
1659         }
1660
1661         if (!should_warn)
1662                 return;
1663         if (oe->nr_unordered_events != 0)
1664                 ui__warning("%u out of order events recorded.\n", oe->nr_unordered_events);
1665 }
1666
1667 static void perf_session__warn_about_errors(const struct perf_session *session)
1668 {
1669         const struct events_stats *stats = &session->evlist->stats;
1670
1671         if (session->tool->lost == perf_event__process_lost &&
1672             stats->nr_events[PERF_RECORD_LOST] != 0) {
1673                 ui__warning("Processed %d events and lost %d chunks!\n\n"
1674                             "Check IO/CPU overload!\n\n",
1675                             stats->nr_events[0],
1676                             stats->nr_events[PERF_RECORD_LOST]);
1677         }
1678
1679         if (session->tool->lost_samples == perf_event__process_lost_samples) {
1680                 double drop_rate;
1681
1682                 drop_rate = (double)stats->total_lost_samples /
1683                             (double) (stats->nr_events[PERF_RECORD_SAMPLE] + stats->total_lost_samples);
1684                 if (drop_rate > 0.05) {
1685                         ui__warning("Processed %" PRIu64 " samples and lost %3.2f%%!\n\n",
1686                                     stats->nr_events[PERF_RECORD_SAMPLE] + stats->total_lost_samples,
1687                                     drop_rate * 100.0);
1688                 }
1689         }
1690
1691         if (session->tool->aux == perf_event__process_aux &&
1692             stats->total_aux_lost != 0) {
1693                 ui__warning("AUX data lost %" PRIu64 " times out of %u!\n\n",
1694                             stats->total_aux_lost,
1695                             stats->nr_events[PERF_RECORD_AUX]);
1696         }
1697
1698         if (session->tool->aux == perf_event__process_aux &&
1699             stats->total_aux_partial != 0) {
1700                 bool vmm_exclusive = false;
1701
1702                 (void)sysfs__read_bool("module/kvm_intel/parameters/vmm_exclusive",
1703                                        &vmm_exclusive);
1704
1705                 ui__warning("AUX data had gaps in it %" PRIu64 " times out of %u!\n\n"
1706                             "Are you running a KVM guest in the background?%s\n\n",
1707                             stats->total_aux_partial,
1708                             stats->nr_events[PERF_RECORD_AUX],
1709                             vmm_exclusive ?
1710                             "\nReloading kvm_intel module with vmm_exclusive=0\n"
1711                             "will reduce the gaps to only guest's timeslices." :
1712                             "");
1713         }
1714
1715         if (session->tool->aux == perf_event__process_aux &&
1716             stats->total_aux_collision != 0) {
1717                 ui__warning("AUX data detected collision  %" PRIu64 " times out of %u!\n\n",
1718                             stats->total_aux_collision,
1719                             stats->nr_events[PERF_RECORD_AUX]);
1720         }
1721
1722         if (stats->nr_unknown_events != 0) {
1723                 ui__warning("Found %u unknown events!\n\n"
1724                             "Is this an older tool processing a perf.data "
1725                             "file generated by a more recent tool?\n\n"
1726                             "If that is not the case, consider "
1727                             "reporting to [email protected].\n\n",
1728                             stats->nr_unknown_events);
1729         }
1730
1731         if (stats->nr_unknown_id != 0) {
1732                 ui__warning("%u samples with id not present in the header\n",
1733                             stats->nr_unknown_id);
1734         }
1735
1736         if (stats->nr_invalid_chains != 0) {
1737                 ui__warning("Found invalid callchains!\n\n"
1738                             "%u out of %u events were discarded for this reason.\n\n"
1739                             "Consider reporting to [email protected].\n\n",
1740                             stats->nr_invalid_chains,
1741                             stats->nr_events[PERF_RECORD_SAMPLE]);
1742         }
1743
1744         if (stats->nr_unprocessable_samples != 0) {
1745                 ui__warning("%u unprocessable samples recorded.\n"
1746                             "Do you have a KVM guest running and not using 'perf kvm'?\n",
1747                             stats->nr_unprocessable_samples);
1748         }
1749
1750         perf_session__warn_order(session);
1751
1752         events_stats__auxtrace_error_warn(stats);
1753
1754         if (stats->nr_proc_map_timeout != 0) {
1755                 ui__warning("%d map information files for pre-existing threads were\n"
1756                             "not processed, if there are samples for addresses they\n"
1757                             "will not be resolved, you may find out which are these\n"
1758                             "threads by running with -v and redirecting the output\n"
1759                             "to a file.\n"
1760                             "The time limit to process proc map is too short?\n"
1761                             "Increase it by --proc-map-timeout\n",
1762                             stats->nr_proc_map_timeout);
1763         }
1764 }
1765
1766 static int perf_session__flush_thread_stack(struct thread *thread,
1767                                             void *p __maybe_unused)
1768 {
1769         return thread_stack__flush(thread);
1770 }
1771
1772 static int perf_session__flush_thread_stacks(struct perf_session *session)
1773 {
1774         return machines__for_each_thread(&session->machines,
1775                                          perf_session__flush_thread_stack,
1776                                          NULL);
1777 }
1778
1779 volatile sig_atomic_t session_done;
1780
1781 static int __perf_session__process_decomp_events(struct perf_session *session);
1782
1783 static int __perf_session__process_pipe_events(struct perf_session *session)
1784 {
1785         struct ordered_events *oe = &session->ordered_events;
1786         const struct perf_tool *tool = session->tool;
1787         struct ui_progress prog;
1788         union perf_event *event;
1789         uint32_t size, cur_size = 0;
1790         void *buf = NULL;
1791         s64 skip = 0;
1792         u64 head;
1793         ssize_t err;
1794         void *p;
1795         bool update_prog = false;
1796
1797         /*
1798          * If it's from a file saving pipe data (by redirection), it would have
1799          * a file name other than "-".  Then we can get the total size and show
1800          * the progress.
1801          */
1802         if (strcmp(session->data->path, "-") && session->data->file.size) {
1803                 ui_progress__init_size(&prog, session->data->file.size,
1804                                        "Processing events...");
1805                 update_prog = true;
1806         }
1807
1808         head = 0;
1809         cur_size = sizeof(union perf_event);
1810
1811         buf = malloc(cur_size);
1812         if (!buf)
1813                 return -errno;
1814         ordered_events__set_copy_on_queue(oe, true);
1815 more:
1816         event = buf;
1817         err = perf_data__read(session->data, event,
1818                               sizeof(struct perf_event_header));
1819         if (err <= 0) {
1820                 if (err == 0)
1821                         goto done;
1822
1823                 pr_err("failed to read event header\n");
1824                 goto out_err;
1825         }
1826
1827         if (session->header.needs_swap)
1828                 perf_event_header__bswap(&event->header);
1829
1830         size = event->header.size;
1831         if (size < sizeof(struct perf_event_header)) {
1832                 pr_err("bad event header size\n");
1833                 goto out_err;
1834         }
1835
1836         if (size > cur_size) {
1837                 void *new = realloc(buf, size);
1838                 if (!new) {
1839                         pr_err("failed to allocate memory to read event\n");
1840                         goto out_err;
1841                 }
1842                 buf = new;
1843                 cur_size = size;
1844                 event = buf;
1845         }
1846         p = event;
1847         p += sizeof(struct perf_event_header);
1848
1849         if (size - sizeof(struct perf_event_header)) {
1850                 err = perf_data__read(session->data, p,
1851                                       size - sizeof(struct perf_event_header));
1852                 if (err <= 0) {
1853                         if (err == 0) {
1854                                 pr_err("unexpected end of event stream\n");
1855                                 goto done;
1856                         }
1857
1858                         pr_err("failed to read event data\n");
1859                         goto out_err;
1860                 }
1861         }
1862
1863         if ((skip = perf_session__process_event(session, event, head, "pipe")) < 0) {
1864                 pr_err("%#" PRIx64 " [%#x]: failed to process type: %d\n",
1865                        head, event->header.size, event->header.type);
1866                 err = -EINVAL;
1867                 goto out_err;
1868         }
1869
1870         head += size;
1871
1872         if (skip > 0)
1873                 head += skip;
1874
1875         err = __perf_session__process_decomp_events(session);
1876         if (err)
1877                 goto out_err;
1878
1879         if (update_prog)
1880                 ui_progress__update(&prog, size);
1881
1882         if (!session_done())
1883                 goto more;
1884 done:
1885         /* do the final flush for ordered samples */
1886         err = ordered_events__flush(oe, OE_FLUSH__FINAL);
1887         if (err)
1888                 goto out_err;
1889         err = auxtrace__flush_events(session, tool);
1890         if (err)
1891                 goto out_err;
1892         err = perf_session__flush_thread_stacks(session);
1893 out_err:
1894         free(buf);
1895         if (update_prog)
1896                 ui_progress__finish();
1897         if (!tool->no_warn)
1898                 perf_session__warn_about_errors(session);
1899         ordered_events__free(&session->ordered_events);
1900         auxtrace__free_events(session);
1901         return err;
1902 }
1903
1904 static union perf_event *
1905 prefetch_event(char *buf, u64 head, size_t mmap_size,
1906                bool needs_swap, union perf_event *error)
1907 {
1908         union perf_event *event;
1909         u16 event_size;
1910
1911         /*
1912          * Ensure we have enough space remaining to read
1913          * the size of the event in the headers.
1914          */
1915         if (head + sizeof(event->header) > mmap_size)
1916                 return NULL;
1917
1918         event = (union perf_event *)(buf + head);
1919         if (needs_swap)
1920                 perf_event_header__bswap(&event->header);
1921
1922         event_size = event->header.size;
1923         if (head + event_size <= mmap_size)
1924                 return event;
1925
1926         /* We're not fetching the event so swap back again */
1927         if (needs_swap)
1928                 perf_event_header__bswap(&event->header);
1929
1930         /* Check if the event fits into the next mmapped buf. */
1931         if (event_size <= mmap_size - head % page_size) {
1932                 /* Remap buf and fetch again. */
1933                 return NULL;
1934         }
1935
1936         /* Invalid input. Event size should never exceed mmap_size. */
1937         pr_debug("%s: head=%#" PRIx64 " event->header.size=%#x, mmap_size=%#zx:"
1938                  " fuzzed or compressed perf.data?\n", __func__, head, event_size, mmap_size);
1939
1940         return error;
1941 }
1942
1943 static union perf_event *
1944 fetch_mmaped_event(u64 head, size_t mmap_size, char *buf, bool needs_swap)
1945 {
1946         return prefetch_event(buf, head, mmap_size, needs_swap, ERR_PTR(-EINVAL));
1947 }
1948
1949 static union perf_event *
1950 fetch_decomp_event(u64 head, size_t mmap_size, char *buf, bool needs_swap)
1951 {
1952         return prefetch_event(buf, head, mmap_size, needs_swap, NULL);
1953 }
1954
1955 static int __perf_session__process_decomp_events(struct perf_session *session)
1956 {
1957         s64 skip;
1958         u64 size;
1959         struct decomp *decomp = session->active_decomp->decomp_last;
1960
1961         if (!decomp)
1962                 return 0;
1963
1964         while (decomp->head < decomp->size && !session_done()) {
1965                 union perf_event *event = fetch_decomp_event(decomp->head, decomp->size, decomp->data,
1966                                                              session->header.needs_swap);
1967
1968                 if (!event)
1969                         break;
1970
1971                 size = event->header.size;
1972
1973                 if (size < sizeof(struct perf_event_header) ||
1974                     (skip = perf_session__process_event(session, event, decomp->file_pos,
1975                                                         decomp->file_path)) < 0) {
1976                         pr_err("%#" PRIx64 " [%#x]: failed to process type: %d\n",
1977                                 decomp->file_pos + decomp->head, event->header.size, event->header.type);
1978                         return -EINVAL;
1979                 }
1980
1981                 if (skip)
1982                         size += skip;
1983
1984                 decomp->head += size;
1985         }
1986
1987         return 0;
1988 }
1989
1990 /*
1991  * On 64bit we can mmap the data file in one go. No need for tiny mmap
1992  * slices. On 32bit we use 32MB.
1993  */
1994 #if BITS_PER_LONG == 64
1995 #define MMAP_SIZE ULLONG_MAX
1996 #define NUM_MMAPS 1
1997 #else
1998 #define MMAP_SIZE (32 * 1024 * 1024ULL)
1999 #define NUM_MMAPS 128
2000 #endif
2001
2002 struct reader;
2003
2004 typedef s64 (*reader_cb_t)(struct perf_session *session,
2005                            union perf_event *event,
2006                            u64 file_offset,
2007                            const char *file_path);
2008
2009 struct reader {
2010         int              fd;
2011         const char       *path;
2012         u64              data_size;
2013         u64              data_offset;
2014         reader_cb_t      process;
2015         bool             in_place_update;
2016         char             *mmaps[NUM_MMAPS];
2017         size_t           mmap_size;
2018         int              mmap_idx;
2019         char             *mmap_cur;
2020         u64              file_pos;
2021         u64              file_offset;
2022         u64              head;
2023         u64              size;
2024         bool             done;
2025         struct zstd_data   zstd_data;
2026         struct decomp_data decomp_data;
2027 };
2028
2029 static int
2030 reader__init(struct reader *rd, bool *one_mmap)
2031 {
2032         u64 data_size = rd->data_size;
2033         char **mmaps = rd->mmaps;
2034
2035         rd->head = rd->data_offset;
2036         data_size += rd->data_offset;
2037
2038         rd->mmap_size = MMAP_SIZE;
2039         if (rd->mmap_size > data_size) {
2040                 rd->mmap_size = data_size;
2041                 if (one_mmap)
2042                         *one_mmap = true;
2043         }
2044
2045         memset(mmaps, 0, sizeof(rd->mmaps));
2046
2047         if (zstd_init(&rd->zstd_data, 0))
2048                 return -1;
2049         rd->decomp_data.zstd_decomp = &rd->zstd_data;
2050
2051         return 0;
2052 }
2053
2054 static void
2055 reader__release_decomp(struct reader *rd)
2056 {
2057         perf_decomp__release_events(rd->decomp_data.decomp);
2058         zstd_fini(&rd->zstd_data);
2059 }
2060
2061 static int
2062 reader__mmap(struct reader *rd, struct perf_session *session)
2063 {
2064         int mmap_prot, mmap_flags;
2065         char *buf, **mmaps = rd->mmaps;
2066         u64 page_offset;
2067
2068         mmap_prot  = PROT_READ;
2069         mmap_flags = MAP_SHARED;
2070
2071         if (rd->in_place_update) {
2072                 mmap_prot  |= PROT_WRITE;
2073         } else if (session->header.needs_swap) {
2074                 mmap_prot  |= PROT_WRITE;
2075                 mmap_flags = MAP_PRIVATE;
2076         }
2077
2078         if (mmaps[rd->mmap_idx]) {
2079                 munmap(mmaps[rd->mmap_idx], rd->mmap_size);
2080                 mmaps[rd->mmap_idx] = NULL;
2081         }
2082
2083         page_offset = page_size * (rd->head / page_size);
2084         rd->file_offset += page_offset;
2085         rd->head -= page_offset;
2086
2087         buf = mmap(NULL, rd->mmap_size, mmap_prot, mmap_flags, rd->fd,
2088                    rd->file_offset);
2089         if (buf == MAP_FAILED) {
2090                 pr_err("failed to mmap file\n");
2091                 return -errno;
2092         }
2093         mmaps[rd->mmap_idx] = rd->mmap_cur = buf;
2094         rd->mmap_idx = (rd->mmap_idx + 1) & (ARRAY_SIZE(rd->mmaps) - 1);
2095         rd->file_pos = rd->file_offset + rd->head;
2096         if (session->one_mmap) {
2097                 session->one_mmap_addr = buf;
2098                 session->one_mmap_offset = rd->file_offset;
2099         }
2100
2101         return 0;
2102 }
2103
2104 enum {
2105         READER_OK,
2106         READER_NODATA,
2107 };
2108
2109 static int
2110 reader__read_event(struct reader *rd, struct perf_session *session,
2111                    struct ui_progress *prog)
2112 {
2113         u64 size;
2114         int err = READER_OK;
2115         union perf_event *event;
2116         s64 skip;
2117
2118         event = fetch_mmaped_event(rd->head, rd->mmap_size, rd->mmap_cur,
2119                                    session->header.needs_swap);
2120         if (IS_ERR(event))
2121                 return PTR_ERR(event);
2122
2123         if (!event)
2124                 return READER_NODATA;
2125
2126         size = event->header.size;
2127
2128         skip = -EINVAL;
2129
2130         if (size < sizeof(struct perf_event_header) ||
2131             (skip = rd->process(session, event, rd->file_pos, rd->path)) < 0) {
2132                 pr_err("%#" PRIx64 " [%#x]: failed to process type: %d [%s]\n",
2133                        rd->file_offset + rd->head, event->header.size,
2134                        event->header.type, strerror(-skip));
2135                 err = skip;
2136                 goto out;
2137         }
2138
2139         if (skip)
2140                 size += skip;
2141
2142         rd->size += size;
2143         rd->head += size;
2144         rd->file_pos += size;
2145
2146         err = __perf_session__process_decomp_events(session);
2147         if (err)
2148                 goto out;
2149
2150         ui_progress__update(prog, size);
2151
2152 out:
2153         return err;
2154 }
2155
2156 static inline bool
2157 reader__eof(struct reader *rd)
2158 {
2159         return (rd->file_pos >= rd->data_size + rd->data_offset);
2160 }
2161
2162 static int
2163 reader__process_events(struct reader *rd, struct perf_session *session,
2164                        struct ui_progress *prog)
2165 {
2166         int err;
2167
2168         err = reader__init(rd, &session->one_mmap);
2169         if (err)
2170                 goto out;
2171
2172         session->active_decomp = &rd->decomp_data;
2173
2174 remap:
2175         err = reader__mmap(rd, session);
2176         if (err)
2177                 goto out;
2178
2179 more:
2180         err = reader__read_event(rd, session, prog);
2181         if (err < 0)
2182                 goto out;
2183         else if (err == READER_NODATA)
2184                 goto remap;
2185
2186         if (session_done())
2187                 goto out;
2188
2189         if (!reader__eof(rd))
2190                 goto more;
2191
2192 out:
2193         session->active_decomp = &session->decomp_data;
2194         return err;
2195 }
2196
2197 static s64 process_simple(struct perf_session *session,
2198                           union perf_event *event,
2199                           u64 file_offset,
2200                           const char *file_path)
2201 {
2202         return perf_session__process_event(session, event, file_offset, file_path);
2203 }
2204
2205 static int __perf_session__process_events(struct perf_session *session)
2206 {
2207         struct reader rd = {
2208                 .fd             = perf_data__fd(session->data),
2209                 .path           = session->data->file.path,
2210                 .data_size      = session->header.data_size,
2211                 .data_offset    = session->header.data_offset,
2212                 .process        = process_simple,
2213                 .in_place_update = session->data->in_place_update,
2214         };
2215         struct ordered_events *oe = &session->ordered_events;
2216         const struct perf_tool *tool = session->tool;
2217         struct ui_progress prog;
2218         int err;
2219
2220         if (rd.data_size == 0)
2221                 return -1;
2222
2223         ui_progress__init_size(&prog, rd.data_size, "Processing events...");
2224
2225         err = reader__process_events(&rd, session, &prog);
2226         if (err)
2227                 goto out_err;
2228         /* do the final flush for ordered samples */
2229         err = ordered_events__flush(oe, OE_FLUSH__FINAL);
2230         if (err)
2231                 goto out_err;
2232         err = auxtrace__flush_events(session, tool);
2233         if (err)
2234                 goto out_err;
2235         err = perf_session__flush_thread_stacks(session);
2236 out_err:
2237         ui_progress__finish();
2238         if (!tool->no_warn)
2239                 perf_session__warn_about_errors(session);
2240         /*
2241          * We may switching perf.data output, make ordered_events
2242          * reusable.
2243          */
2244         ordered_events__reinit(&session->ordered_events);
2245         auxtrace__free_events(session);
2246         reader__release_decomp(&rd);
2247         session->one_mmap = false;
2248         return err;
2249 }
2250
2251 /*
2252  * Processing 2 MB of data from each reader in sequence,
2253  * because that's the way the ordered events sorting works
2254  * most efficiently.
2255  */
2256 #define READER_MAX_SIZE (2 * 1024 * 1024)
2257
2258 /*
2259  * This function reads, merge and process directory data.
2260  * It assumens the version 1 of directory data, where each
2261  * data file holds per-cpu data, already sorted by kernel.
2262  */
2263 static int __perf_session__process_dir_events(struct perf_session *session)
2264 {
2265         struct perf_data *data = session->data;
2266         const struct perf_tool *tool = session->tool;
2267         int i, ret, readers, nr_readers;
2268         struct ui_progress prog;
2269         u64 total_size = perf_data__size(session->data);
2270         struct reader *rd;
2271
2272         ui_progress__init_size(&prog, total_size, "Processing events...");
2273
2274         nr_readers = 1;
2275         for (i = 0; i < data->dir.nr; i++) {
2276                 if (data->dir.files[i].size)
2277                         nr_readers++;
2278         }
2279
2280         rd = zalloc(nr_readers * sizeof(struct reader));
2281         if (!rd)
2282                 return -ENOMEM;
2283
2284         rd[0] = (struct reader) {
2285                 .fd              = perf_data__fd(session->data),
2286                 .path            = session->data->file.path,
2287                 .data_size       = session->header.data_size,
2288                 .data_offset     = session->header.data_offset,
2289                 .process         = process_simple,
2290                 .in_place_update = session->data->in_place_update,
2291         };
2292         ret = reader__init(&rd[0], NULL);
2293         if (ret)
2294                 goto out_err;
2295         ret = reader__mmap(&rd[0], session);
2296         if (ret)
2297                 goto out_err;
2298         readers = 1;
2299
2300         for (i = 0; i < data->dir.nr; i++) {
2301                 if (!data->dir.files[i].size)
2302                         continue;
2303                 rd[readers] = (struct reader) {
2304                         .fd              = data->dir.files[i].fd,
2305                         .path            = data->dir.files[i].path,
2306                         .data_size       = data->dir.files[i].size,
2307                         .data_offset     = 0,
2308                         .process         = process_simple,
2309                         .in_place_update = session->data->in_place_update,
2310                 };
2311                 ret = reader__init(&rd[readers], NULL);
2312                 if (ret)
2313                         goto out_err;
2314                 ret = reader__mmap(&rd[readers], session);
2315                 if (ret)
2316                         goto out_err;
2317                 readers++;
2318         }
2319
2320         i = 0;
2321         while (readers) {
2322                 if (session_done())
2323                         break;
2324
2325                 if (rd[i].done) {
2326                         i = (i + 1) % nr_readers;
2327                         continue;
2328                 }
2329                 if (reader__eof(&rd[i])) {
2330                         rd[i].done = true;
2331                         readers--;
2332                         continue;
2333                 }
2334
2335                 session->active_decomp = &rd[i].decomp_data;
2336                 ret = reader__read_event(&rd[i], session, &prog);
2337                 if (ret < 0) {
2338                         goto out_err;
2339                 } else if (ret == READER_NODATA) {
2340                         ret = reader__mmap(&rd[i], session);
2341                         if (ret)
2342                                 goto out_err;
2343                 }
2344
2345                 if (rd[i].size >= READER_MAX_SIZE) {
2346                         rd[i].size = 0;
2347                         i = (i + 1) % nr_readers;
2348                 }
2349         }
2350
2351         ret = ordered_events__flush(&session->ordered_events, OE_FLUSH__FINAL);
2352         if (ret)
2353                 goto out_err;
2354
2355         ret = perf_session__flush_thread_stacks(session);
2356 out_err:
2357         ui_progress__finish();
2358
2359         if (!tool->no_warn)
2360                 perf_session__warn_about_errors(session);
2361
2362         /*
2363          * We may switching perf.data output, make ordered_events
2364          * reusable.
2365          */
2366         ordered_events__reinit(&session->ordered_events);
2367
2368         session->one_mmap = false;
2369
2370         session->active_decomp = &session->decomp_data;
2371         for (i = 0; i < nr_readers; i++)
2372                 reader__release_decomp(&rd[i]);
2373         zfree(&rd);
2374
2375         return ret;
2376 }
2377
2378 int perf_session__process_events(struct perf_session *session)
2379 {
2380         if (perf_session__register_idle_thread(session) < 0)
2381                 return -ENOMEM;
2382
2383         if (perf_data__is_pipe(session->data))
2384                 return __perf_session__process_pipe_events(session);
2385
2386         if (perf_data__is_dir(session->data) && session->data->dir.nr)
2387                 return __perf_session__process_dir_events(session);
2388
2389         return __perf_session__process_events(session);
2390 }
2391
2392 bool perf_session__has_traces(struct perf_session *session, const char *msg)
2393 {
2394         struct evsel *evsel;
2395
2396         evlist__for_each_entry(session->evlist, evsel) {
2397                 if (evsel->core.attr.type == PERF_TYPE_TRACEPOINT)
2398                         return true;
2399         }
2400
2401         pr_err("No trace sample to read. Did you call 'perf %s'?\n", msg);
2402         return false;
2403 }
2404
2405 int map__set_kallsyms_ref_reloc_sym(struct map *map, const char *symbol_name, u64 addr)
2406 {
2407         char *bracket;
2408         struct ref_reloc_sym *ref;
2409         struct kmap *kmap;
2410
2411         ref = zalloc(sizeof(struct ref_reloc_sym));
2412         if (ref == NULL)
2413                 return -ENOMEM;
2414
2415         ref->name = strdup(symbol_name);
2416         if (ref->name == NULL) {
2417                 free(ref);
2418                 return -ENOMEM;
2419         }
2420
2421         bracket = strchr(ref->name, ']');
2422         if (bracket)
2423                 *bracket = '\0';
2424
2425         ref->addr = addr;
2426
2427         kmap = map__kmap(map);
2428         if (kmap)
2429                 kmap->ref_reloc_sym = ref;
2430
2431         return 0;
2432 }
2433
2434 size_t perf_session__fprintf_dsos(struct perf_session *session, FILE *fp)
2435 {
2436         return machines__fprintf_dsos(&session->machines, fp);
2437 }
2438
2439 size_t perf_session__fprintf_dsos_buildid(struct perf_session *session, FILE *fp,
2440                                           bool (skip)(struct dso *dso, int parm), int parm)
2441 {
2442         return machines__fprintf_dsos_buildid(&session->machines, fp, skip, parm);
2443 }
2444
2445 size_t perf_session__fprintf_nr_events(struct perf_session *session, FILE *fp)
2446 {
2447         size_t ret;
2448         const char *msg = "";
2449
2450         if (perf_header__has_feat(&session->header, HEADER_AUXTRACE))
2451                 msg = " (excludes AUX area (e.g. instruction trace) decoded / synthesized events)";
2452
2453         ret = fprintf(fp, "\nAggregated stats:%s\n", msg);
2454
2455         ret += events_stats__fprintf(&session->evlist->stats, fp);
2456         return ret;
2457 }
2458
2459 size_t perf_session__fprintf(struct perf_session *session, FILE *fp)
2460 {
2461         /*
2462          * FIXME: Here we have to actually print all the machines in this
2463          * session, not just the host...
2464          */
2465         return machine__fprintf(&session->machines.host, fp);
2466 }
2467
2468 void perf_session__dump_kmaps(struct perf_session *session)
2469 {
2470         int save_verbose = verbose;
2471
2472         fflush(stdout);
2473         fprintf(stderr, "Kernel and module maps:\n");
2474         verbose = 0; /* Suppress verbose to print a summary only */
2475         maps__fprintf(machine__kernel_maps(&session->machines.host), stderr);
2476         verbose = save_verbose;
2477 }
2478
2479 struct evsel *perf_session__find_first_evtype(struct perf_session *session,
2480                                               unsigned int type)
2481 {
2482         struct evsel *pos;
2483
2484         evlist__for_each_entry(session->evlist, pos) {
2485                 if (pos->core.attr.type == type)
2486                         return pos;
2487         }
2488         return NULL;
2489 }
2490
2491 int perf_session__cpu_bitmap(struct perf_session *session,
2492                              const char *cpu_list, unsigned long *cpu_bitmap)
2493 {
2494         int i, err = -1;
2495         struct perf_cpu_map *map;
2496         int nr_cpus = min(session->header.env.nr_cpus_avail, MAX_NR_CPUS);
2497         struct perf_cpu cpu;
2498
2499         for (i = 0; i < PERF_TYPE_MAX; ++i) {
2500                 struct evsel *evsel;
2501
2502                 evsel = perf_session__find_first_evtype(session, i);
2503                 if (!evsel)
2504                         continue;
2505
2506                 if (!(evsel->core.attr.sample_type & PERF_SAMPLE_CPU)) {
2507                         pr_err("File does not contain CPU events. "
2508                                "Remove -C option to proceed.\n");
2509                         return -1;
2510                 }
2511         }
2512
2513         map = perf_cpu_map__new(cpu_list);
2514         if (map == NULL) {
2515                 pr_err("Invalid cpu_list\n");
2516                 return -1;
2517         }
2518
2519         perf_cpu_map__for_each_cpu(cpu, i, map) {
2520                 if (cpu.cpu >= nr_cpus) {
2521                         pr_err("Requested CPU %d too large. "
2522                                "Consider raising MAX_NR_CPUS\n", cpu.cpu);
2523                         goto out_delete_map;
2524                 }
2525
2526                 __set_bit(cpu.cpu, cpu_bitmap);
2527         }
2528
2529         err = 0;
2530
2531 out_delete_map:
2532         perf_cpu_map__put(map);
2533         return err;
2534 }
2535
2536 void perf_session__fprintf_info(struct perf_session *session, FILE *fp,
2537                                 bool full)
2538 {
2539         if (session == NULL || fp == NULL)
2540                 return;
2541
2542         fprintf(fp, "# ========\n");
2543         perf_header__fprintf_info(session, fp, full);
2544         fprintf(fp, "# ========\n#\n");
2545 }
2546
2547 static int perf_session__register_guest(struct perf_session *session, pid_t machine_pid)
2548 {
2549         struct machine *machine = machines__findnew(&session->machines, machine_pid);
2550         struct thread *thread;
2551
2552         if (!machine)
2553                 return -ENOMEM;
2554
2555         machine->single_address_space = session->machines.host.single_address_space;
2556
2557         thread = machine__idle_thread(machine);
2558         if (!thread)
2559                 return -ENOMEM;
2560         thread__put(thread);
2561
2562         machine->kallsyms_filename = perf_data__guest_kallsyms_name(session->data, machine_pid);
2563
2564         return 0;
2565 }
2566
2567 static int perf_session__set_guest_cpu(struct perf_session *session, pid_t pid,
2568                                        pid_t tid, int guest_cpu)
2569 {
2570         struct machine *machine = &session->machines.host;
2571         struct thread *thread = machine__findnew_thread(machine, pid, tid);
2572
2573         if (!thread)
2574                 return -ENOMEM;
2575         thread__set_guest_cpu(thread, guest_cpu);
2576         thread__put(thread);
2577
2578         return 0;
2579 }
2580
2581 int perf_event__process_id_index(struct perf_session *session,
2582                                  union perf_event *event)
2583 {
2584         struct evlist *evlist = session->evlist;
2585         struct perf_record_id_index *ie = &event->id_index;
2586         size_t sz = ie->header.size - sizeof(*ie);
2587         size_t i, nr, max_nr;
2588         size_t e1_sz = sizeof(struct id_index_entry);
2589         size_t e2_sz = sizeof(struct id_index_entry_2);
2590         size_t etot_sz = e1_sz + e2_sz;
2591         struct id_index_entry_2 *e2;
2592         pid_t last_pid = 0;
2593
2594         max_nr = sz / e1_sz;
2595         nr = ie->nr;
2596         if (nr > max_nr) {
2597                 printf("Too big: nr %zu max_nr %zu\n", nr, max_nr);
2598                 return -EINVAL;
2599         }
2600
2601         if (sz >= nr * etot_sz) {
2602                 max_nr = sz / etot_sz;
2603                 if (nr > max_nr) {
2604                         printf("Too big2: nr %zu max_nr %zu\n", nr, max_nr);
2605                         return -EINVAL;
2606                 }
2607                 e2 = (void *)ie + sizeof(*ie) + nr * e1_sz;
2608         } else {
2609                 e2 = NULL;
2610         }
2611
2612         if (dump_trace)
2613                 fprintf(stdout, " nr: %zu\n", nr);
2614
2615         for (i = 0; i < nr; i++, (e2 ? e2++ : 0)) {
2616                 struct id_index_entry *e = &ie->entries[i];
2617                 struct perf_sample_id *sid;
2618                 int ret;
2619
2620                 if (dump_trace) {
2621                         fprintf(stdout, " ... id: %"PRI_lu64, e->id);
2622                         fprintf(stdout, "  idx: %"PRI_lu64, e->idx);
2623                         fprintf(stdout, "  cpu: %"PRI_ld64, e->cpu);
2624                         fprintf(stdout, "  tid: %"PRI_ld64, e->tid);
2625                         if (e2) {
2626                                 fprintf(stdout, "  machine_pid: %"PRI_ld64, e2->machine_pid);
2627                                 fprintf(stdout, "  vcpu: %"PRI_lu64"\n", e2->vcpu);
2628                         } else {
2629                                 fprintf(stdout, "\n");
2630                         }
2631                 }
2632
2633                 sid = evlist__id2sid(evlist, e->id);
2634                 if (!sid)
2635                         return -ENOENT;
2636
2637                 sid->idx = e->idx;
2638                 sid->cpu.cpu = e->cpu;
2639                 sid->tid = e->tid;
2640
2641                 if (!e2)
2642                         continue;
2643
2644                 sid->machine_pid = e2->machine_pid;
2645                 sid->vcpu.cpu = e2->vcpu;
2646
2647                 if (!sid->machine_pid)
2648                         continue;
2649
2650                 if (sid->machine_pid != last_pid) {
2651                         ret = perf_session__register_guest(session, sid->machine_pid);
2652                         if (ret)
2653                                 return ret;
2654                         last_pid = sid->machine_pid;
2655                         perf_guest = true;
2656                 }
2657
2658                 ret = perf_session__set_guest_cpu(session, sid->machine_pid, e->tid, e2->vcpu);
2659                 if (ret)
2660                         return ret;
2661         }
2662         return 0;
2663 }
2664
2665 int perf_session__dsos_hit_all(struct perf_session *session)
2666 {
2667         struct rb_node *nd;
2668         int err;
2669
2670         err = machine__hit_all_dsos(&session->machines.host);
2671         if (err)
2672                 return err;
2673
2674         for (nd = rb_first_cached(&session->machines.guests); nd;
2675              nd = rb_next(nd)) {
2676                 struct machine *pos = rb_entry(nd, struct machine, rb_node);
2677
2678                 err = machine__hit_all_dsos(pos);
2679                 if (err)
2680                         return err;
2681         }
2682
2683         return 0;
2684 }