tools/perf/util/event.c

   1 #include <errno.h>
   2 #include <fcntl.h>
   3 #include <inttypes.h>
   4 #include <linux/kernel.h>
   5 #include <linux/types.h>
   6 #include <perf/cpumap.h>
   7 #include <sys/types.h>
   8 #include <sys/stat.h>
   9 #include <unistd.h>
  10 #include <uapi/linux/mman.h> /* To get things like MAP_HUGETLB even on older libc headers */
  11 #include <linux/perf_event.h>
  12 #include <linux/zalloc.h>
  13 #include "cpumap.h"
  14 #include "dso.h"
  15 #include "event.h"
  16 #include "debug.h"
  17 #include "hist.h"
  18 #include "machine.h"
  19 #include "sort.h"
  20 #include "string2.h"
  21 #include "strlist.h"
  22 #include "thread.h"
  23 #include "thread_map.h"
  24 #include "time-utils.h"
  25 #include <linux/ctype.h>
  26 #include "map.h"
  27 #include "util/namespaces.h"
  28 #include "symbol.h"
  29 #include "symbol/kallsyms.h"
  30 #include "asm/bug.h"
  31 #include "stat.h"
  32 #include "session.h"
  33 #include "bpf-event.h"
  34 #include "print_binary.h"
  35 #include "tool.h"
  36 #include "../perf.h"
  37
  38 static const char *perf_event__names[] = {
  39         [0]                                     = "TOTAL",
  40         [PERF_RECORD_MMAP]                      = "MMAP",
  41         [PERF_RECORD_MMAP2]                     = "MMAP2",
  42         [PERF_RECORD_LOST]                      = "LOST",
  43         [PERF_RECORD_COMM]                      = "COMM",
  44         [PERF_RECORD_EXIT]                      = "EXIT",
  45         [PERF_RECORD_THROTTLE]                  = "THROTTLE",
  46         [PERF_RECORD_UNTHROTTLE]                = "UNTHROTTLE",
  47         [PERF_RECORD_FORK]                      = "FORK",
  48         [PERF_RECORD_READ]                      = "READ",
  49         [PERF_RECORD_SAMPLE]                    = "SAMPLE",
  50         [PERF_RECORD_AUX]                       = "AUX",
  51         [PERF_RECORD_ITRACE_START]              = "ITRACE_START",
  52         [PERF_RECORD_LOST_SAMPLES]              = "LOST_SAMPLES",
  53         [PERF_RECORD_SWITCH]                    = "SWITCH",
  54         [PERF_RECORD_SWITCH_CPU_WIDE]           = "SWITCH_CPU_WIDE",
  55         [PERF_RECORD_NAMESPACES]                = "NAMESPACES",
  56         [PERF_RECORD_KSYMBOL]                   = "KSYMBOL",
  57         [PERF_RECORD_BPF_EVENT]                 = "BPF_EVENT",
  58         [PERF_RECORD_CGROUP]                    = "CGROUP",
  59         [PERF_RECORD_TEXT_POKE]                 = "TEXT_POKE",
  60         [PERF_RECORD_AUX_OUTPUT_HW_ID]          = "AUX_OUTPUT_HW_ID",
  61         [PERF_RECORD_HEADER_ATTR]               = "ATTR",
  62         [PERF_RECORD_HEADER_EVENT_TYPE]         = "EVENT_TYPE",
  63         [PERF_RECORD_HEADER_TRACING_DATA]       = "TRACING_DATA",
  64         [PERF_RECORD_HEADER_BUILD_ID]           = "BUILD_ID",
  65         [PERF_RECORD_FINISHED_ROUND]            = "FINISHED_ROUND",
  66         [PERF_RECORD_ID_INDEX]                  = "ID_INDEX",
  67         [PERF_RECORD_AUXTRACE_INFO]             = "AUXTRACE_INFO",
  68         [PERF_RECORD_AUXTRACE]                  = "AUXTRACE",
  69         [PERF_RECORD_AUXTRACE_ERROR]            = "AUXTRACE_ERROR",
  70         [PERF_RECORD_THREAD_MAP]                = "THREAD_MAP",
  71         [PERF_RECORD_CPU_MAP]                   = "CPU_MAP",
  72         [PERF_RECORD_STAT_CONFIG]               = "STAT_CONFIG",
  73         [PERF_RECORD_STAT]                      = "STAT",
  74         [PERF_RECORD_STAT_ROUND]                = "STAT_ROUND",
  75         [PERF_RECORD_EVENT_UPDATE]              = "EVENT_UPDATE",
  76         [PERF_RECORD_TIME_CONV]                 = "TIME_CONV",
  77         [PERF_RECORD_HEADER_FEATURE]            = "FEATURE",
  78         [PERF_RECORD_COMPRESSED]                = "COMPRESSED",
  79         [PERF_RECORD_FINISHED_INIT]             = "FINISHED_INIT",
  80 };
  81
  82 const char *perf_event__name(unsigned int id)
  83 {
  84         if (id >= ARRAY_SIZE(perf_event__names))
  85                 return "INVALID";
  86         if (!perf_event__names[id])
  87                 return "UNKNOWN";
  88         return perf_event__names[id];
  89 }
  90
  91 struct process_symbol_args {
  92         const char *name;
  93         u64        start;
  94 };
  95
  96 static int find_symbol_cb(void *arg, const char *name, char type,
  97                           u64 start)
  98 {
  99         struct process_symbol_args *args = arg;
 100
 101         /*
 102          * Must be a function or at least an alias, as in PARISC64, where "_text" is
 103          * an 'A' to the same address as "_stext".
 104          */
 105         if (!(kallsyms__is_function(type) ||
 106               type == 'A') || strcmp(name, args->name))
 107                 return 0;
 108
 109         args->start = start;
 110         return 1;
 111 }
 112
 113 int kallsyms__get_function_start(const char *kallsyms_filename,
 114                                  const char *symbol_name, u64 *addr)
 115 {
 116         struct process_symbol_args args = { .name = symbol_name, };
 117
 118         if (kallsyms__parse(kallsyms_filename, &args, find_symbol_cb) <= 0)
 119                 return -1;
 120
 121         *addr = args.start;
 122         return 0;
 123 }
 124
 125 void perf_event__read_stat_config(struct perf_stat_config *config,
 126                                   struct perf_record_stat_config *event)
 127 {
 128         unsigned i;
 129
 130         for (i = 0; i < event->nr; i++) {
 131
 132                 switch (event->data[i].tag) {
 133 #define CASE(__term, __val)                                     \
 134                 case PERF_STAT_CONFIG_TERM__##__term:           \
 135                         config->__val = event->data[i].val;     \
 136                         break;
 137
 138                 CASE(AGGR_MODE, aggr_mode)
 139                 CASE(SCALE,     scale)
 140                 CASE(INTERVAL,  interval)
 141 #undef CASE
 142                 default:
 143                         pr_warning("unknown stat config term %" PRI_lu64 "\n",
 144                                    event->data[i].tag);
 145                 }
 146         }
 147 }
 148
 149 size_t perf_event__fprintf_comm(union perf_event *event, FILE *fp)
 150 {
 151         const char *s;
 152
 153         if (event->header.misc & PERF_RECORD_MISC_COMM_EXEC)
 154                 s = " exec";
 155         else
 156                 s = "";
 157
 158         return fprintf(fp, "%s: %s:%d/%d\n", s, event->comm.comm, event->comm.pid, event->comm.tid);
 159 }
 160
 161 size_t perf_event__fprintf_namespaces(union perf_event *event, FILE *fp)
 162 {
 163         size_t ret = 0;
 164         struct perf_ns_link_info *ns_link_info;
 165         u32 nr_namespaces, idx;
 166
 167         ns_link_info = event->namespaces.link_info;
 168         nr_namespaces = event->namespaces.nr_namespaces;
 169
 170         ret += fprintf(fp, " %d/%d - nr_namespaces: %u\n\t\t[",
 171                        event->namespaces.pid,
 172                        event->namespaces.tid,
 173                        nr_namespaces);
 174
 175         for (idx = 0; idx < nr_namespaces; idx++) {
 176                 if (idx && (idx % 4 == 0))
 177                         ret += fprintf(fp, "\n\t\t ");
 178
 179                 ret  += fprintf(fp, "%u/%s: %" PRIu64 "/%#" PRIx64 "%s", idx,
 180                                 perf_ns__name(idx), (u64)ns_link_info[idx].dev,
 181                                 (u64)ns_link_info[idx].ino,
 182                                 ((idx + 1) != nr_namespaces) ? ", " : "]\n");
 183         }
 184
 185         return ret;
 186 }
 187
 188 size_t perf_event__fprintf_cgroup(union perf_event *event, FILE *fp)
 189 {
 190         return fprintf(fp, " cgroup: %" PRI_lu64 " %s\n",
 191                        event->cgroup.id, event->cgroup.path);
 192 }
 193
 194 int perf_event__process_comm(struct perf_tool *tool __maybe_unused,
 195                              union perf_event *event,
 196                              struct perf_sample *sample,
 197                              struct machine *machine)
 198 {
 199         return machine__process_comm_event(machine, event, sample);
 200 }
 201
 202 int perf_event__process_namespaces(struct perf_tool *tool __maybe_unused,
 203                                    union perf_event *event,
 204                                    struct perf_sample *sample,
 205                                    struct machine *machine)
 206 {
 207         return machine__process_namespaces_event(machine, event, sample);
 208 }
 209
 210 int perf_event__process_cgroup(struct perf_tool *tool __maybe_unused,
 211                                union perf_event *event,
 212                                struct perf_sample *sample,
 213                                struct machine *machine)
 214 {
 215         return machine__process_cgroup_event(machine, event, sample);
 216 }
 217
 218 int perf_event__process_lost(struct perf_tool *tool __maybe_unused,
 219                              union perf_event *event,
 220                              struct perf_sample *sample,
 221                              struct machine *machine)
 222 {
 223         return machine__process_lost_event(machine, event, sample);
 224 }
 225
 226 int perf_event__process_aux(struct perf_tool *tool __maybe_unused,
 227                             union perf_event *event,
 228                             struct perf_sample *sample __maybe_unused,
 229                             struct machine *machine)
 230 {
 231         return machine__process_aux_event(machine, event);
 232 }
 233
 234 int perf_event__process_itrace_start(struct perf_tool *tool __maybe_unused,
 235                                      union perf_event *event,
 236                                      struct perf_sample *sample __maybe_unused,
 237                                      struct machine *machine)
 238 {
 239         return machine__process_itrace_start_event(machine, event);
 240 }
 241
 242 int perf_event__process_aux_output_hw_id(struct perf_tool *tool __maybe_unused,
 243                                          union perf_event *event,
 244                                          struct perf_sample *sample __maybe_unused,
 245                                          struct machine *machine)
 246 {
 247         return machine__process_aux_output_hw_id_event(machine, event);
 248 }
 249
 250 int perf_event__process_lost_samples(struct perf_tool *tool __maybe_unused,
 251                                      union perf_event *event,
 252                                      struct perf_sample *sample,
 253                                      struct machine *machine)
 254 {
 255         return machine__process_lost_samples_event(machine, event, sample);
 256 }
 257
 258 int perf_event__process_switch(struct perf_tool *tool __maybe_unused,
 259                                union perf_event *event,
 260                                struct perf_sample *sample __maybe_unused,
 261                                struct machine *machine)
 262 {
 263         return machine__process_switch_event(machine, event);
 264 }
 265
 266 int perf_event__process_ksymbol(struct perf_tool *tool __maybe_unused,
 267                                 union perf_event *event,
 268                                 struct perf_sample *sample __maybe_unused,
 269                                 struct machine *machine)
 270 {
 271         return machine__process_ksymbol(machine, event, sample);
 272 }
 273
 274 int perf_event__process_bpf(struct perf_tool *tool __maybe_unused,
 275                             union perf_event *event,
 276                             struct perf_sample *sample,
 277                             struct machine *machine)
 278 {
 279         return machine__process_bpf(machine, event, sample);
 280 }
 281
 282 int perf_event__process_text_poke(struct perf_tool *tool __maybe_unused,
 283                                   union perf_event *event,
 284                                   struct perf_sample *sample,
 285                                   struct machine *machine)
 286 {
 287         return machine__process_text_poke(machine, event, sample);
 288 }
 289
 290 size_t perf_event__fprintf_mmap(union perf_event *event, FILE *fp)
 291 {
 292         return fprintf(fp, " %d/%d: [%#" PRI_lx64 "(%#" PRI_lx64 ") @ %#" PRI_lx64 "]: %c %s\n",
 293                        event->mmap.pid, event->mmap.tid, event->mmap.start,
 294                        event->mmap.len, event->mmap.pgoff,
 295                        (event->header.misc & PERF_RECORD_MISC_MMAP_DATA) ? 'r' : 'x',
 296                        event->mmap.filename);
 297 }
 298
 299 size_t perf_event__fprintf_mmap2(union perf_event *event, FILE *fp)
 300 {
 301         if (event->header.misc & PERF_RECORD_MISC_MMAP_BUILD_ID) {
 302                 char sbuild_id[SBUILD_ID_SIZE];
 303                 struct build_id bid;
 304
 305                 build_id__init(&bid, event->mmap2.build_id,
 306                                event->mmap2.build_id_size);
 307                 build_id__sprintf(&bid, sbuild_id);
 308
 309                 return fprintf(fp, " %d/%d: [%#" PRI_lx64 "(%#" PRI_lx64 ") @ %#" PRI_lx64
 310                                    " <%s>]: %c%c%c%c %s\n",
 311                                event->mmap2.pid, event->mmap2.tid, event->mmap2.start,
 312                                event->mmap2.len, event->mmap2.pgoff, sbuild_id,
 313                                (event->mmap2.prot & PROT_READ) ? 'r' : '-',
 314                                (event->mmap2.prot & PROT_WRITE) ? 'w' : '-',
 315                                (event->mmap2.prot & PROT_EXEC) ? 'x' : '-',
 316                                (event->mmap2.flags & MAP_SHARED) ? 's' : 'p',
 317                                event->mmap2.filename);
 318         } else {
 319                 return fprintf(fp, " %d/%d: [%#" PRI_lx64 "(%#" PRI_lx64 ") @ %#" PRI_lx64
 320                                    " %02x:%02x %"PRI_lu64" %"PRI_lu64"]: %c%c%c%c %s\n",
 321                                event->mmap2.pid, event->mmap2.tid, event->mmap2.start,
 322                                event->mmap2.len, event->mmap2.pgoff, event->mmap2.maj,
 323                                event->mmap2.min, event->mmap2.ino,
 324                                event->mmap2.ino_generation,
 325                                (event->mmap2.prot & PROT_READ) ? 'r' : '-',
 326                                (event->mmap2.prot & PROT_WRITE) ? 'w' : '-',
 327                                (event->mmap2.prot & PROT_EXEC) ? 'x' : '-',
 328                                (event->mmap2.flags & MAP_SHARED) ? 's' : 'p',
 329                                event->mmap2.filename);
 330         }
 331 }
 332
 333 size_t perf_event__fprintf_thread_map(union perf_event *event, FILE *fp)
 334 {
 335         struct perf_thread_map *threads = thread_map__new_event(&event->thread_map);
 336         size_t ret;
 337
 338         ret = fprintf(fp, " nr: ");
 339
 340         if (threads)
 341                 ret += thread_map__fprintf(threads, fp);
 342         else
 343                 ret += fprintf(fp, "failed to get threads from event\n");
 344
 345         perf_thread_map__put(threads);
 346         return ret;
 347 }
 348
 349 size_t perf_event__fprintf_cpu_map(union perf_event *event, FILE *fp)
 350 {
 351         struct perf_cpu_map *cpus = cpu_map__new_data(&event->cpu_map.data);
 352         size_t ret;
 353
 354         ret = fprintf(fp, ": ");
 355
 356         if (cpus)
 357                 ret += cpu_map__fprintf(cpus, fp);
 358         else
 359                 ret += fprintf(fp, "failed to get cpumap from event\n");
 360
 361         perf_cpu_map__put(cpus);
 362         return ret;
 363 }
 364
 365 int perf_event__process_mmap(struct perf_tool *tool __maybe_unused,
 366                              union perf_event *event,
 367                              struct perf_sample *sample,
 368                              struct machine *machine)
 369 {
 370         return machine__process_mmap_event(machine, event, sample);
 371 }
 372
 373 int perf_event__process_mmap2(struct perf_tool *tool __maybe_unused,
 374                              union perf_event *event,
 375                              struct perf_sample *sample,
 376                              struct machine *machine)
 377 {
 378         return machine__process_mmap2_event(machine, event, sample);
 379 }
 380
 381 size_t perf_event__fprintf_task(union perf_event *event, FILE *fp)
 382 {
 383         return fprintf(fp, "(%d:%d):(%d:%d)\n",
 384                        event->fork.pid, event->fork.tid,
 385                        event->fork.ppid, event->fork.ptid);
 386 }
 387
 388 int perf_event__process_fork(struct perf_tool *tool __maybe_unused,
 389                              union perf_event *event,
 390                              struct perf_sample *sample,
 391                              struct machine *machine)
 392 {
 393         return machine__process_fork_event(machine, event, sample);
 394 }
 395
 396 int perf_event__process_exit(struct perf_tool *tool __maybe_unused,
 397                              union perf_event *event,
 398                              struct perf_sample *sample,
 399                              struct machine *machine)
 400 {
 401         return machine__process_exit_event(machine, event, sample);
 402 }
 403
 404 size_t perf_event__fprintf_aux(union perf_event *event, FILE *fp)
 405 {
 406         return fprintf(fp, " offset: %#"PRI_lx64" size: %#"PRI_lx64" flags: %#"PRI_lx64" [%s%s%s]\n",
 407                        event->aux.aux_offset, event->aux.aux_size,
 408                        event->aux.flags,
 409                        event->aux.flags & PERF_AUX_FLAG_TRUNCATED ? "T" : "",
 410                        event->aux.flags & PERF_AUX_FLAG_OVERWRITE ? "O" : "",
 411                        event->aux.flags & PERF_AUX_FLAG_PARTIAL   ? "P" : "");
 412 }
 413
 414 size_t perf_event__fprintf_itrace_start(union perf_event *event, FILE *fp)
 415 {
 416         return fprintf(fp, " pid: %u tid: %u\n",
 417                        event->itrace_start.pid, event->itrace_start.tid);
 418 }
 419
 420 size_t perf_event__fprintf_aux_output_hw_id(union perf_event *event, FILE *fp)
 421 {
 422         return fprintf(fp, " hw_id: %#"PRI_lx64"\n",
 423                        event->aux_output_hw_id.hw_id);
 424 }
 425
 426 size_t perf_event__fprintf_switch(union perf_event *event, FILE *fp)
 427 {
 428         bool out = event->header.misc & PERF_RECORD_MISC_SWITCH_OUT;
 429         const char *in_out = !out ? "IN         " :
 430                 !(event->header.misc & PERF_RECORD_MISC_SWITCH_OUT_PREEMPT) ?
 431                                     "OUT        " : "OUT preempt";
 432
 433         if (event->header.type == PERF_RECORD_SWITCH)
 434                 return fprintf(fp, " %s\n", in_out);
 435
 436         return fprintf(fp, " %s  %s pid/tid: %5d/%-5d\n",
 437                        in_out, out ? "next" : "prev",
 438                        event->context_switch.next_prev_pid,
 439                        event->context_switch.next_prev_tid);
 440 }
 441
 442 static size_t perf_event__fprintf_lost(union perf_event *event, FILE *fp)
 443 {
 444         return fprintf(fp, " lost %" PRI_lu64 "\n", event->lost.lost);
 445 }
 446
 447 size_t perf_event__fprintf_ksymbol(union perf_event *event, FILE *fp)
 448 {
 449         return fprintf(fp, " addr %" PRI_lx64 " len %u type %u flags 0x%x name %s\n",
 450                        event->ksymbol.addr, event->ksymbol.len,
 451                        event->ksymbol.ksym_type,
 452                        event->ksymbol.flags, event->ksymbol.name);
 453 }
 454
 455 size_t perf_event__fprintf_bpf(union perf_event *event, FILE *fp)
 456 {
 457         return fprintf(fp, " type %u, flags %u, id %u\n",
 458                        event->bpf.type, event->bpf.flags, event->bpf.id);
 459 }
 460
 461 static int text_poke_printer(enum binary_printer_ops op, unsigned int val,
 462                              void *extra, FILE *fp)
 463 {
 464         bool old = *(bool *)extra;
 465
 466         switch ((int)op) {
 467         case BINARY_PRINT_LINE_BEGIN:
 468                 return fprintf(fp, "            %s bytes:", old ? "Old" : "New");
 469         case BINARY_PRINT_NUM_DATA:
 470                 return fprintf(fp, " %02x", val);
 471         case BINARY_PRINT_LINE_END:
 472                 return fprintf(fp, "\n");
 473         default:
 474                 return 0;
 475         }
 476 }
 477
 478 size_t perf_event__fprintf_text_poke(union perf_event *event, struct machine *machine, FILE *fp)
 479 {
 480         struct perf_record_text_poke_event *tp = &event->text_poke;
 481         size_t ret;
 482         bool old;
 483
 484         ret = fprintf(fp, " %" PRI_lx64 " ", tp->addr);
 485         if (machine) {
 486                 struct addr_location al;
 487
 488                 al.map = maps__find(machine__kernel_maps(machine), tp->addr);
 489                 if (al.map && map__load(al.map) >= 0) {
 490                         al.addr = al.map->map_ip(al.map, tp->addr);
 491                         al.sym = map__find_symbol(al.map, al.addr);
 492                         if (al.sym)
 493                                 ret += symbol__fprintf_symname_offs(al.sym, &al, fp);
 494                 }
 495         }
 496         ret += fprintf(fp, " old len %u new len %u\n", tp->old_len, tp->new_len);
 497         old = true;
 498         ret += binary__fprintf(tp->bytes, tp->old_len, 16, text_poke_printer,
 499                                &old, fp);
 500         old = false;
 501         ret += binary__fprintf(tp->bytes + tp->old_len, tp->new_len, 16,
 502                                text_poke_printer, &old, fp);
 503         return ret;
 504 }
 505
 506 size_t perf_event__fprintf(union perf_event *event, struct machine *machine, FILE *fp)
 507 {
 508         size_t ret = fprintf(fp, "PERF_RECORD_%s",
 509                              perf_event__name(event->header.type));
 510
 511         switch (event->header.type) {
 512         case PERF_RECORD_COMM:
 513                 ret += perf_event__fprintf_comm(event, fp);
 514                 break;
 515         case PERF_RECORD_FORK:
 516         case PERF_RECORD_EXIT:
 517                 ret += perf_event__fprintf_task(event, fp);
 518                 break;
 519         case PERF_RECORD_MMAP:
 520                 ret += perf_event__fprintf_mmap(event, fp);
 521                 break;
 522         case PERF_RECORD_NAMESPACES:
 523                 ret += perf_event__fprintf_namespaces(event, fp);
 524                 break;
 525         case PERF_RECORD_CGROUP:
 526                 ret += perf_event__fprintf_cgroup(event, fp);
 527                 break;
 528         case PERF_RECORD_MMAP2:
 529                 ret += perf_event__fprintf_mmap2(event, fp);
 530                 break;
 531         case PERF_RECORD_AUX:
 532                 ret += perf_event__fprintf_aux(event, fp);
 533                 break;
 534         case PERF_RECORD_ITRACE_START:
 535                 ret += perf_event__fprintf_itrace_start(event, fp);
 536                 break;
 537         case PERF_RECORD_SWITCH:
 538         case PERF_RECORD_SWITCH_CPU_WIDE:
 539                 ret += perf_event__fprintf_switch(event, fp);
 540                 break;
 541         case PERF_RECORD_LOST:
 542                 ret += perf_event__fprintf_lost(event, fp);
 543                 break;
 544         case PERF_RECORD_KSYMBOL:
 545                 ret += perf_event__fprintf_ksymbol(event, fp);
 546                 break;
 547         case PERF_RECORD_BPF_EVENT:
 548                 ret += perf_event__fprintf_bpf(event, fp);
 549                 break;
 550         case PERF_RECORD_TEXT_POKE:
 551                 ret += perf_event__fprintf_text_poke(event, machine, fp);
 552                 break;
 553         case PERF_RECORD_AUX_OUTPUT_HW_ID:
 554                 ret += perf_event__fprintf_aux_output_hw_id(event, fp);
 555                 break;
 556         default:
 557                 ret += fprintf(fp, "\n");
 558         }
 559
 560         return ret;
 561 }
 562
 563 int perf_event__process(struct perf_tool *tool __maybe_unused,
 564                         union perf_event *event,
 565                         struct perf_sample *sample,
 566                         struct machine *machine)
 567 {
 568         return machine__process_event(machine, event, sample);
 569 }
 570
 571 struct map *thread__find_map(struct thread *thread, u8 cpumode, u64 addr,
 572                              struct addr_location *al)
 573 {
 574         struct maps *maps = thread->maps;
 575         struct machine *machine = maps->machine;
 576         bool load_map = false;
 577
 578         al->maps = maps;
 579         al->thread = thread;
 580         al->addr = addr;
 581         al->cpumode = cpumode;
 582         al->filtered = 0;
 583
 584         if (machine == NULL) {
 585                 al->map = NULL;
 586                 return NULL;
 587         }
 588
 589         if (cpumode == PERF_RECORD_MISC_KERNEL && perf_host) {
 590                 al->level = 'k';
 591                 al->maps = maps = machine__kernel_maps(machine);
 592                 load_map = true;
 593         } else if (cpumode == PERF_RECORD_MISC_USER && perf_host) {
 594                 al->level = '.';
 595         } else if (cpumode == PERF_RECORD_MISC_GUEST_KERNEL && perf_guest) {
 596                 al->level = 'g';
 597                 al->maps = maps = machine__kernel_maps(machine);
 598                 load_map = true;
 599         } else if (cpumode == PERF_RECORD_MISC_GUEST_USER && perf_guest) {
 600                 al->level = 'u';
 601         } else {
 602                 al->level = 'H';
 603                 al->map = NULL;
 604
 605                 if ((cpumode == PERF_RECORD_MISC_GUEST_USER ||
 606                         cpumode == PERF_RECORD_MISC_GUEST_KERNEL) &&
 607                         !perf_guest)
 608                         al->filtered |= (1 << HIST_FILTER__GUEST);
 609                 if ((cpumode == PERF_RECORD_MISC_USER ||
 610                         cpumode == PERF_RECORD_MISC_KERNEL) &&
 611                         !perf_host)
 612                         al->filtered |= (1 << HIST_FILTER__HOST);
 613
 614                 return NULL;
 615         }
 616
 617         al->map = maps__find(maps, al->addr);
 618         if (al->map != NULL) {
 619                 /*
 620                  * Kernel maps might be changed when loading symbols so loading
 621                  * must be done prior to using kernel maps.
 622                  */
 623                 if (load_map)
 624                         map__load(al->map);
 625                 al->addr = al->map->map_ip(al->map, al->addr);
 626         }
 627
 628         return al->map;
 629 }
 630
 631 /*
 632  * For branch stacks or branch samples, the sample cpumode might not be correct
 633  * because it applies only to the sample 'ip' and not necessary to 'addr' or
 634  * branch stack addresses. If possible, use a fallback to deal with those cases.
 635  */
 636 struct map *thread__find_map_fb(struct thread *thread, u8 cpumode, u64 addr,
 637                                 struct addr_location *al)
 638 {
 639         struct map *map = thread__find_map(thread, cpumode, addr, al);
 640         struct machine *machine = thread->maps->machine;
 641         u8 addr_cpumode = machine__addr_cpumode(machine, cpumode, addr);
 642
 643         if (map || addr_cpumode == cpumode)
 644                 return map;
 645
 646         return thread__find_map(thread, addr_cpumode, addr, al);
 647 }
 648
 649 struct symbol *thread__find_symbol(struct thread *thread, u8 cpumode,
 650                                    u64 addr, struct addr_location *al)
 651 {
 652         al->sym = NULL;
 653         if (thread__find_map(thread, cpumode, addr, al))
 654                 al->sym = map__find_symbol(al->map, al->addr);
 655         return al->sym;
 656 }
 657
 658 struct symbol *thread__find_symbol_fb(struct thread *thread, u8 cpumode,
 659                                       u64 addr, struct addr_location *al)
 660 {
 661         al->sym = NULL;
 662         if (thread__find_map_fb(thread, cpumode, addr, al))
 663                 al->sym = map__find_symbol(al->map, al->addr);
 664         return al->sym;
 665 }
 666
 667 static bool check_address_range(struct intlist *addr_list, int addr_range,
 668                                 unsigned long addr)
 669 {
 670         struct int_node *pos;
 671
 672         intlist__for_each_entry(pos, addr_list) {
 673                 if (addr >= pos->i && addr < pos->i + addr_range)
 674                         return true;
 675         }
 676
 677         return false;
 678 }
 679
 680 /*
 681  * Callers need to drop the reference to al->thread, obtained in
 682  * machine__findnew_thread()
 683  */
 684 int machine__resolve(struct machine *machine, struct addr_location *al,
 685                      struct perf_sample *sample)
 686 {
 687         struct thread *thread;
 688
 689         if (symbol_conf.guest_code && !machine__is_host(machine))
 690                 thread = machine__findnew_guest_code(machine, sample->pid);
 691         else
 692                 thread = machine__findnew_thread(machine, sample->pid, sample->tid);
 693         if (thread == NULL)
 694                 return -1;
 695
 696         dump_printf(" ... thread: %s:%d\n", thread__comm_str(thread), thread->tid);
 697         thread__find_map(thread, sample->cpumode, sample->ip, al);
 698         dump_printf(" ...... dso: %s\n",
 699                     al->map ? al->map->dso->long_name :
 700                         al->level == 'H' ? "[hypervisor]" : "<not found>");
 701
 702         if (thread__is_filtered(thread))
 703                 al->filtered |= (1 << HIST_FILTER__THREAD);
 704
 705         al->sym = NULL;
 706         al->cpu = sample->cpu;
 707         al->socket = -1;
 708         al->srcline = NULL;
 709
 710         if (al->cpu >= 0) {
 711                 struct perf_env *env = machine->env;
 712
 713                 if (env && env->cpu)
 714                         al->socket = env->cpu[al->cpu].socket_id;
 715         }
 716
 717         if (al->map) {
 718                 struct dso *dso = al->map->dso;
 719
 720                 if (symbol_conf.dso_list &&
 721                     (!dso || !(strlist__has_entry(symbol_conf.dso_list,
 722                                                   dso->short_name) ||
 723                                (dso->short_name != dso->long_name &&
 724                                 strlist__has_entry(symbol_conf.dso_list,
 725                                                    dso->long_name))))) {
 726                         al->filtered |= (1 << HIST_FILTER__DSO);
 727                 }
 728
 729                 al->sym = map__find_symbol(al->map, al->addr);
 730         } else if (symbol_conf.dso_list) {
 731                 al->filtered |= (1 << HIST_FILTER__DSO);
 732         }
 733
 734         if (symbol_conf.sym_list) {
 735                 int ret = 0;
 736                 char al_addr_str[32];
 737                 size_t sz = sizeof(al_addr_str);
 738
 739                 if (al->sym) {
 740                         ret = strlist__has_entry(symbol_conf.sym_list,
 741                                                 al->sym->name);
 742                 }
 743                 if (!ret && al->sym) {
 744                         snprintf(al_addr_str, sz, "0x%"PRIx64,
 745                                 al->map->unmap_ip(al->map, al->sym->start));
 746                         ret = strlist__has_entry(symbol_conf.sym_list,
 747                                                 al_addr_str);
 748                 }
 749                 if (!ret && symbol_conf.addr_list && al->map) {
 750                         unsigned long addr = al->map->unmap_ip(al->map, al->addr);
 751
 752                         ret = intlist__has_entry(symbol_conf.addr_list, addr);
 753                         if (!ret && symbol_conf.addr_range) {
 754                                 ret = check_address_range(symbol_conf.addr_list,
 755                                                           symbol_conf.addr_range,
 756                                                           addr);
 757                         }
 758                 }
 759
 760                 if (!ret)
 761                         al->filtered |= (1 << HIST_FILTER__SYMBOL);
 762         }
 763
 764         return 0;
 765 }
 766
 767 /*
 768  * The preprocess_sample method will return with reference counts for the
 769  * in it, when done using (and perhaps getting ref counts if needing to
 770  * keep a pointer to one of those entries) it must be paired with
 771  * addr_location__put(), so that the refcounts can be decremented.
 772  */
 773 void addr_location__put(struct addr_location *al)
 774 {
 775         thread__zput(al->thread);
 776 }
 777
 778 bool is_bts_event(struct perf_event_attr *attr)
 779 {
 780         return attr->type == PERF_TYPE_HARDWARE &&
 781                (attr->config & PERF_COUNT_HW_BRANCH_INSTRUCTIONS) &&
 782                attr->sample_period == 1;
 783 }
 784
 785 bool sample_addr_correlates_sym(struct perf_event_attr *attr)
 786 {
 787         if (attr->type == PERF_TYPE_SOFTWARE &&
 788             (attr->config == PERF_COUNT_SW_PAGE_FAULTS ||
 789              attr->config == PERF_COUNT_SW_PAGE_FAULTS_MIN ||
 790              attr->config == PERF_COUNT_SW_PAGE_FAULTS_MAJ))
 791                 return true;
 792
 793         if (is_bts_event(attr))
 794                 return true;
 795
 796         return false;
 797 }
 798
 799 void thread__resolve(struct thread *thread, struct addr_location *al,
 800                      struct perf_sample *sample)
 801 {
 802         thread__find_map_fb(thread, sample->cpumode, sample->addr, al);
 803
 804         al->cpu = sample->cpu;
 805         al->sym = NULL;
 806
 807         if (al->map)
 808                 al->sym = map__find_symbol(al->map, al->addr);
 809 }