tools/perf/builtin-script.c

   1 #include "builtin.h"
   2
   3 #include "perf.h"
   4 #include "util/cache.h"
   5 #include "util/debug.h"
   6 #include <subcmd/exec-cmd.h>
   7 #include "util/header.h"
   8 #include <subcmd/parse-options.h>
   9 #include "util/perf_regs.h"
  10 #include "util/session.h"
  11 #include "util/tool.h"
  12 #include "util/symbol.h"
  13 #include "util/thread.h"
  14 #include "util/trace-event.h"
  15 #include "util/util.h"
  16 #include "util/evlist.h"
  17 #include "util/evsel.h"
  18 #include "util/sort.h"
  19 #include "util/data.h"
  20 #include "util/auxtrace.h"
  21 #include "util/cpumap.h"
  22 #include "util/thread_map.h"
  23 #include "util/stat.h"
  24 #include "util/thread-stack.h"
  25 #include "util/time-utils.h"
  26 #include <linux/bitmap.h>
  27 #include <linux/kernel.h>
  28 #include <linux/stringify.h>
  29 #include <linux/time64.h>
  30 #include "asm/bug.h"
  31 #include "util/mem-events.h"
  32 #include "util/dump-insn.h"
  33 #include <inttypes.h>
  34
  35 static char const               *script_name;
  36 static char const               *generate_script_lang;
  37 static bool                     debug_mode;
  38 static u64                      last_timestamp;
  39 static u64                      nr_unordered;
  40 static bool                     no_callchain;
  41 static bool                     latency_format;
  42 static bool                     system_wide;
  43 static bool                     print_flags;
  44 static bool                     nanosecs;
  45 static const char               *cpu_list;
  46 static DECLARE_BITMAP(cpu_bitmap, MAX_NR_CPUS);
  47 static struct perf_stat_config  stat_config;
  48 static int                      max_blocks;
  49
  50 unsigned int scripting_max_stack = PERF_MAX_STACK_DEPTH;
  51
  52 enum perf_output_field {
  53         PERF_OUTPUT_COMM            = 1U << 0,
  54         PERF_OUTPUT_TID             = 1U << 1,
  55         PERF_OUTPUT_PID             = 1U << 2,
  56         PERF_OUTPUT_TIME            = 1U << 3,
  57         PERF_OUTPUT_CPU             = 1U << 4,
  58         PERF_OUTPUT_EVNAME          = 1U << 5,
  59         PERF_OUTPUT_TRACE           = 1U << 6,
  60         PERF_OUTPUT_IP              = 1U << 7,
  61         PERF_OUTPUT_SYM             = 1U << 8,
  62         PERF_OUTPUT_DSO             = 1U << 9,
  63         PERF_OUTPUT_ADDR            = 1U << 10,
  64         PERF_OUTPUT_SYMOFFSET       = 1U << 11,
  65         PERF_OUTPUT_SRCLINE         = 1U << 12,
  66         PERF_OUTPUT_PERIOD          = 1U << 13,
  67         PERF_OUTPUT_IREGS           = 1U << 14,
  68         PERF_OUTPUT_BRSTACK         = 1U << 15,
  69         PERF_OUTPUT_BRSTACKSYM      = 1U << 16,
  70         PERF_OUTPUT_DATA_SRC        = 1U << 17,
  71         PERF_OUTPUT_WEIGHT          = 1U << 18,
  72         PERF_OUTPUT_BPF_OUTPUT      = 1U << 19,
  73         PERF_OUTPUT_CALLINDENT      = 1U << 20,
  74         PERF_OUTPUT_INSN            = 1U << 21,
  75         PERF_OUTPUT_INSNLEN         = 1U << 22,
  76         PERF_OUTPUT_BRSTACKINSN     = 1U << 23,
  77 };
  78
  79 struct output_option {
  80         const char *str;
  81         enum perf_output_field field;
  82 } all_output_options[] = {
  83         {.str = "comm",  .field = PERF_OUTPUT_COMM},
  84         {.str = "tid",   .field = PERF_OUTPUT_TID},
  85         {.str = "pid",   .field = PERF_OUTPUT_PID},
  86         {.str = "time",  .field = PERF_OUTPUT_TIME},
  87         {.str = "cpu",   .field = PERF_OUTPUT_CPU},
  88         {.str = "event", .field = PERF_OUTPUT_EVNAME},
  89         {.str = "trace", .field = PERF_OUTPUT_TRACE},
  90         {.str = "ip",    .field = PERF_OUTPUT_IP},
  91         {.str = "sym",   .field = PERF_OUTPUT_SYM},
  92         {.str = "dso",   .field = PERF_OUTPUT_DSO},
  93         {.str = "addr",  .field = PERF_OUTPUT_ADDR},
  94         {.str = "symoff", .field = PERF_OUTPUT_SYMOFFSET},
  95         {.str = "srcline", .field = PERF_OUTPUT_SRCLINE},
  96         {.str = "period", .field = PERF_OUTPUT_PERIOD},
  97         {.str = "iregs", .field = PERF_OUTPUT_IREGS},
  98         {.str = "brstack", .field = PERF_OUTPUT_BRSTACK},
  99         {.str = "brstacksym", .field = PERF_OUTPUT_BRSTACKSYM},
 100         {.str = "data_src", .field = PERF_OUTPUT_DATA_SRC},
 101         {.str = "weight",   .field = PERF_OUTPUT_WEIGHT},
 102         {.str = "bpf-output",   .field = PERF_OUTPUT_BPF_OUTPUT},
 103         {.str = "callindent", .field = PERF_OUTPUT_CALLINDENT},
 104         {.str = "insn", .field = PERF_OUTPUT_INSN},
 105         {.str = "insnlen", .field = PERF_OUTPUT_INSNLEN},
 106         {.str = "brstackinsn", .field = PERF_OUTPUT_BRSTACKINSN},
 107 };
 108
 109 /* default set to maintain compatibility with current format */
 110 static struct {
 111         bool user_set;
 112         bool wildcard_set;
 113         unsigned int print_ip_opts;
 114         u64 fields;
 115         u64 invalid_fields;
 116 } output[PERF_TYPE_MAX] = {
 117
 118         [PERF_TYPE_HARDWARE] = {
 119                 .user_set = false,
 120
 121                 .fields = PERF_OUTPUT_COMM | PERF_OUTPUT_TID |
 122                               PERF_OUTPUT_CPU | PERF_OUTPUT_TIME |
 123                               PERF_OUTPUT_EVNAME | PERF_OUTPUT_IP |
 124                               PERF_OUTPUT_SYM | PERF_OUTPUT_DSO |
 125                               PERF_OUTPUT_PERIOD,
 126
 127                 .invalid_fields = PERF_OUTPUT_TRACE | PERF_OUTPUT_BPF_OUTPUT,
 128         },
 129
 130         [PERF_TYPE_SOFTWARE] = {
 131                 .user_set = false,
 132
 133                 .fields = PERF_OUTPUT_COMM | PERF_OUTPUT_TID |
 134                               PERF_OUTPUT_CPU | PERF_OUTPUT_TIME |
 135                               PERF_OUTPUT_EVNAME | PERF_OUTPUT_IP |
 136                               PERF_OUTPUT_SYM | PERF_OUTPUT_DSO |
 137                               PERF_OUTPUT_PERIOD | PERF_OUTPUT_BPF_OUTPUT,
 138
 139                 .invalid_fields = PERF_OUTPUT_TRACE,
 140         },
 141
 142         [PERF_TYPE_TRACEPOINT] = {
 143                 .user_set = false,
 144
 145                 .fields = PERF_OUTPUT_COMM | PERF_OUTPUT_TID |
 146                                   PERF_OUTPUT_CPU | PERF_OUTPUT_TIME |
 147                                   PERF_OUTPUT_EVNAME | PERF_OUTPUT_TRACE
 148         },
 149
 150         [PERF_TYPE_RAW] = {
 151                 .user_set = false,
 152
 153                 .fields = PERF_OUTPUT_COMM | PERF_OUTPUT_TID |
 154                               PERF_OUTPUT_CPU | PERF_OUTPUT_TIME |
 155                               PERF_OUTPUT_EVNAME | PERF_OUTPUT_IP |
 156                               PERF_OUTPUT_SYM | PERF_OUTPUT_DSO |
 157                               PERF_OUTPUT_PERIOD |  PERF_OUTPUT_ADDR |
 158                               PERF_OUTPUT_DATA_SRC | PERF_OUTPUT_WEIGHT,
 159
 160                 .invalid_fields = PERF_OUTPUT_TRACE | PERF_OUTPUT_BPF_OUTPUT,
 161         },
 162
 163         [PERF_TYPE_BREAKPOINT] = {
 164                 .user_set = false,
 165
 166                 .fields = PERF_OUTPUT_COMM | PERF_OUTPUT_TID |
 167                               PERF_OUTPUT_CPU | PERF_OUTPUT_TIME |
 168                               PERF_OUTPUT_EVNAME | PERF_OUTPUT_IP |
 169                               PERF_OUTPUT_SYM | PERF_OUTPUT_DSO |
 170                               PERF_OUTPUT_PERIOD,
 171
 172                 .invalid_fields = PERF_OUTPUT_TRACE | PERF_OUTPUT_BPF_OUTPUT,
 173         },
 174 };
 175
 176 static bool output_set_by_user(void)
 177 {
 178         int j;
 179         for (j = 0; j < PERF_TYPE_MAX; ++j) {
 180                 if (output[j].user_set)
 181                         return true;
 182         }
 183         return false;
 184 }
 185
 186 static const char *output_field2str(enum perf_output_field field)
 187 {
 188         int i, imax = ARRAY_SIZE(all_output_options);
 189         const char *str = "";
 190
 191         for (i = 0; i < imax; ++i) {
 192                 if (all_output_options[i].field == field) {
 193                         str = all_output_options[i].str;
 194                         break;
 195                 }
 196         }
 197         return str;
 198 }
 199
 200 #define PRINT_FIELD(x)  (output[attr->type].fields & PERF_OUTPUT_##x)
 201
 202 static int perf_evsel__do_check_stype(struct perf_evsel *evsel,
 203                                       u64 sample_type, const char *sample_msg,
 204                                       enum perf_output_field field,
 205                                       bool allow_user_set)
 206 {
 207         struct perf_event_attr *attr = &evsel->attr;
 208         int type = attr->type;
 209         const char *evname;
 210
 211         if (attr->sample_type & sample_type)
 212                 return 0;
 213
 214         if (output[type].user_set) {
 215                 if (allow_user_set)
 216                         return 0;
 217                 evname = perf_evsel__name(evsel);
 218                 pr_err("Samples for '%s' event do not have %s attribute set. "
 219                        "Cannot print '%s' field.\n",
 220                        evname, sample_msg, output_field2str(field));
 221                 return -1;
 222         }
 223
 224         /* user did not ask for it explicitly so remove from the default list */
 225         output[type].fields &= ~field;
 226         evname = perf_evsel__name(evsel);
 227         pr_debug("Samples for '%s' event do not have %s attribute set. "
 228                  "Skipping '%s' field.\n",
 229                  evname, sample_msg, output_field2str(field));
 230
 231         return 0;
 232 }
 233
 234 static int perf_evsel__check_stype(struct perf_evsel *evsel,
 235                                    u64 sample_type, const char *sample_msg,
 236                                    enum perf_output_field field)
 237 {
 238         return perf_evsel__do_check_stype(evsel, sample_type, sample_msg, field,
 239                                           false);
 240 }
 241
 242 static int perf_evsel__check_attr(struct perf_evsel *evsel,
 243                                   struct perf_session *session)
 244 {
 245         struct perf_event_attr *attr = &evsel->attr;
 246         bool allow_user_set;
 247
 248         if (perf_header__has_feat(&session->header, HEADER_STAT))
 249                 return 0;
 250
 251         allow_user_set = perf_header__has_feat(&session->header,
 252                                                HEADER_AUXTRACE);
 253
 254         if (PRINT_FIELD(TRACE) &&
 255                 !perf_session__has_traces(session, "record -R"))
 256                 return -EINVAL;
 257
 258         if (PRINT_FIELD(IP)) {
 259                 if (perf_evsel__check_stype(evsel, PERF_SAMPLE_IP, "IP",
 260                                             PERF_OUTPUT_IP))
 261                         return -EINVAL;
 262         }
 263
 264         if (PRINT_FIELD(ADDR) &&
 265                 perf_evsel__do_check_stype(evsel, PERF_SAMPLE_ADDR, "ADDR",
 266                                            PERF_OUTPUT_ADDR, allow_user_set))
 267                 return -EINVAL;
 268
 269         if (PRINT_FIELD(DATA_SRC) &&
 270                 perf_evsel__check_stype(evsel, PERF_SAMPLE_DATA_SRC, "DATA_SRC",
 271                                         PERF_OUTPUT_DATA_SRC))
 272                 return -EINVAL;
 273
 274         if (PRINT_FIELD(WEIGHT) &&
 275                 perf_evsel__check_stype(evsel, PERF_SAMPLE_WEIGHT, "WEIGHT",
 276                                         PERF_OUTPUT_WEIGHT))
 277                 return -EINVAL;
 278
 279         if (PRINT_FIELD(SYM) && !PRINT_FIELD(IP) && !PRINT_FIELD(ADDR)) {
 280                 pr_err("Display of symbols requested but neither sample IP nor "
 281                            "sample address\nis selected. Hence, no addresses to convert "
 282                        "to symbols.\n");
 283                 return -EINVAL;
 284         }
 285         if (PRINT_FIELD(SYMOFFSET) && !PRINT_FIELD(SYM)) {
 286                 pr_err("Display of offsets requested but symbol is not"
 287                        "selected.\n");
 288                 return -EINVAL;
 289         }
 290         if (PRINT_FIELD(DSO) && !PRINT_FIELD(IP) && !PRINT_FIELD(ADDR)) {
 291                 pr_err("Display of DSO requested but neither sample IP nor "
 292                            "sample address\nis selected. Hence, no addresses to convert "
 293                        "to DSO.\n");
 294                 return -EINVAL;
 295         }
 296         if (PRINT_FIELD(SRCLINE) && !PRINT_FIELD(IP)) {
 297                 pr_err("Display of source line number requested but sample IP is not\n"
 298                        "selected. Hence, no address to lookup the source line number.\n");
 299                 return -EINVAL;
 300         }
 301         if (PRINT_FIELD(BRSTACKINSN) &&
 302             !(perf_evlist__combined_branch_type(session->evlist) &
 303               PERF_SAMPLE_BRANCH_ANY)) {
 304                 pr_err("Display of branch stack assembler requested, but non all-branch filter set\n"
 305                        "Hint: run 'perf record -b ...'\n");
 306                 return -EINVAL;
 307         }
 308         if ((PRINT_FIELD(PID) || PRINT_FIELD(TID)) &&
 309                 perf_evsel__check_stype(evsel, PERF_SAMPLE_TID, "TID",
 310                                         PERF_OUTPUT_TID|PERF_OUTPUT_PID))
 311                 return -EINVAL;
 312
 313         if (PRINT_FIELD(TIME) &&
 314                 perf_evsel__check_stype(evsel, PERF_SAMPLE_TIME, "TIME",
 315                                         PERF_OUTPUT_TIME))
 316                 return -EINVAL;
 317
 318         if (PRINT_FIELD(CPU) &&
 319                 perf_evsel__do_check_stype(evsel, PERF_SAMPLE_CPU, "CPU",
 320                                            PERF_OUTPUT_CPU, allow_user_set))
 321                 return -EINVAL;
 322
 323         if (PRINT_FIELD(PERIOD) &&
 324                 perf_evsel__check_stype(evsel, PERF_SAMPLE_PERIOD, "PERIOD",
 325                                         PERF_OUTPUT_PERIOD))
 326                 return -EINVAL;
 327
 328         if (PRINT_FIELD(IREGS) &&
 329                 perf_evsel__check_stype(evsel, PERF_SAMPLE_REGS_INTR, "IREGS",
 330                                         PERF_OUTPUT_IREGS))
 331                 return -EINVAL;
 332
 333         return 0;
 334 }
 335
 336 static void set_print_ip_opts(struct perf_event_attr *attr)
 337 {
 338         unsigned int type = attr->type;
 339
 340         output[type].print_ip_opts = 0;
 341         if (PRINT_FIELD(IP))
 342                 output[type].print_ip_opts |= EVSEL__PRINT_IP;
 343
 344         if (PRINT_FIELD(SYM))
 345                 output[type].print_ip_opts |= EVSEL__PRINT_SYM;
 346
 347         if (PRINT_FIELD(DSO))
 348                 output[type].print_ip_opts |= EVSEL__PRINT_DSO;
 349
 350         if (PRINT_FIELD(SYMOFFSET))
 351                 output[type].print_ip_opts |= EVSEL__PRINT_SYMOFFSET;
 352
 353         if (PRINT_FIELD(SRCLINE))
 354                 output[type].print_ip_opts |= EVSEL__PRINT_SRCLINE;
 355 }
 356
 357 /*
 358  * verify all user requested events exist and the samples
 359  * have the expected data
 360  */
 361 static int perf_session__check_output_opt(struct perf_session *session)
 362 {
 363         unsigned int j;
 364         struct perf_evsel *evsel;
 365
 366         for (j = 0; j < PERF_TYPE_MAX; ++j) {
 367                 evsel = perf_session__find_first_evtype(session, j);
 368
 369                 /*
 370                  * even if fields is set to 0 (ie., show nothing) event must
 371                  * exist if user explicitly includes it on the command line
 372                  */
 373                 if (!evsel && output[j].user_set && !output[j].wildcard_set) {
 374                         pr_err("%s events do not exist. "
 375                                "Remove corresponding -f option to proceed.\n",
 376                                event_type(j));
 377                         return -1;
 378                 }
 379
 380                 if (evsel && output[j].fields &&
 381                         perf_evsel__check_attr(evsel, session))
 382                         return -1;
 383
 384                 if (evsel == NULL)
 385                         continue;
 386
 387                 set_print_ip_opts(&evsel->attr);
 388         }
 389
 390         if (!no_callchain) {
 391                 bool use_callchain = false;
 392                 bool not_pipe = false;
 393
 394                 evlist__for_each_entry(session->evlist, evsel) {
 395                         not_pipe = true;
 396                         if (evsel->attr.sample_type & PERF_SAMPLE_CALLCHAIN) {
 397                                 use_callchain = true;
 398                                 break;
 399                         }
 400                 }
 401                 if (not_pipe && !use_callchain)
 402                         symbol_conf.use_callchain = false;
 403         }
 404
 405         /*
 406          * set default for tracepoints to print symbols only
 407          * if callchains are present
 408          */
 409         if (symbol_conf.use_callchain &&
 410             !output[PERF_TYPE_TRACEPOINT].user_set) {
 411                 struct perf_event_attr *attr;
 412
 413                 j = PERF_TYPE_TRACEPOINT;
 414
 415                 evlist__for_each_entry(session->evlist, evsel) {
 416                         if (evsel->attr.type != j)
 417                                 continue;
 418
 419                         attr = &evsel->attr;
 420
 421                         if (attr->sample_type & PERF_SAMPLE_CALLCHAIN) {
 422                                 output[j].fields |= PERF_OUTPUT_IP;
 423                                 output[j].fields |= PERF_OUTPUT_SYM;
 424                                 output[j].fields |= PERF_OUTPUT_DSO;
 425                                 set_print_ip_opts(attr);
 426                                 goto out;
 427                         }
 428                 }
 429         }
 430
 431 out:
 432         return 0;
 433 }
 434
 435 static void print_sample_iregs(struct perf_sample *sample,
 436                           struct perf_event_attr *attr)
 437 {
 438         struct regs_dump *regs = &sample->intr_regs;
 439         uint64_t mask = attr->sample_regs_intr;
 440         unsigned i = 0, r;
 441
 442         if (!regs)
 443                 return;
 444
 445         for_each_set_bit(r, (unsigned long *) &mask, sizeof(mask) * 8) {
 446                 u64 val = regs->regs[i++];
 447                 printf("%5s:0x%"PRIx64" ", perf_reg_name(r), val);
 448         }
 449 }
 450
 451 static void print_sample_start(struct perf_sample *sample,
 452                                struct thread *thread,
 453                                struct perf_evsel *evsel)
 454 {
 455         struct perf_event_attr *attr = &evsel->attr;
 456         unsigned long secs;
 457         unsigned long long nsecs;
 458
 459         if (PRINT_FIELD(COMM)) {
 460                 if (latency_format)
 461                         printf("%8.8s ", thread__comm_str(thread));
 462                 else if (PRINT_FIELD(IP) && symbol_conf.use_callchain)
 463                         printf("%s ", thread__comm_str(thread));
 464                 else
 465                         printf("%16s ", thread__comm_str(thread));
 466         }
 467
 468         if (PRINT_FIELD(PID) && PRINT_FIELD(TID))
 469                 printf("%5d/%-5d ", sample->pid, sample->tid);
 470         else if (PRINT_FIELD(PID))
 471                 printf("%5d ", sample->pid);
 472         else if (PRINT_FIELD(TID))
 473                 printf("%5d ", sample->tid);
 474
 475         if (PRINT_FIELD(CPU)) {
 476                 if (latency_format)
 477                         printf("%3d ", sample->cpu);
 478                 else
 479                         printf("[%03d] ", sample->cpu);
 480         }
 481
 482         if (PRINT_FIELD(TIME)) {
 483                 nsecs = sample->time;
 484                 secs = nsecs / NSEC_PER_SEC;
 485                 nsecs -= secs * NSEC_PER_SEC;
 486
 487                 if (nanosecs)
 488                         printf("%5lu.%09llu: ", secs, nsecs);
 489                 else {
 490                         char sample_time[32];
 491                         timestamp__scnprintf_usec(sample->time, sample_time, sizeof(sample_time));
 492                         printf("%12s: ", sample_time);
 493                 }
 494         }
 495 }
 496
 497 static inline char
 498 mispred_str(struct branch_entry *br)
 499 {
 500         if (!(br->flags.mispred  || br->flags.predicted))
 501                 return '-';
 502
 503         return br->flags.predicted ? 'P' : 'M';
 504 }
 505
 506 static void print_sample_brstack(struct perf_sample *sample)
 507 {
 508         struct branch_stack *br = sample->branch_stack;
 509         u64 i;
 510
 511         if (!(br && br->nr))
 512                 return;
 513
 514         for (i = 0; i < br->nr; i++) {
 515                 printf(" 0x%"PRIx64"/0x%"PRIx64"/%c/%c/%c/%d ",
 516                         br->entries[i].from,
 517                         br->entries[i].to,
 518                         mispred_str( br->entries + i),
 519                         br->entries[i].flags.in_tx? 'X' : '-',
 520                         br->entries[i].flags.abort? 'A' : '-',
 521                         br->entries[i].flags.cycles);
 522         }
 523 }
 524
 525 static void print_sample_brstacksym(struct perf_sample *sample,
 526                                     struct thread *thread)
 527 {
 528         struct branch_stack *br = sample->branch_stack;
 529         struct addr_location alf, alt;
 530         u64 i, from, to;
 531
 532         if (!(br && br->nr))
 533                 return;
 534
 535         for (i = 0; i < br->nr; i++) {
 536
 537                 memset(&alf, 0, sizeof(alf));
 538                 memset(&alt, 0, sizeof(alt));
 539                 from = br->entries[i].from;
 540                 to   = br->entries[i].to;
 541
 542                 thread__find_addr_map(thread, sample->cpumode, MAP__FUNCTION, from, &alf);
 543                 if (alf.map)
 544                         alf.sym = map__find_symbol(alf.map, alf.addr);
 545
 546                 thread__find_addr_map(thread, sample->cpumode, MAP__FUNCTION, to, &alt);
 547                 if (alt.map)
 548                         alt.sym = map__find_symbol(alt.map, alt.addr);
 549
 550                 symbol__fprintf_symname_offs(alf.sym, &alf, stdout);
 551                 putchar('/');
 552                 symbol__fprintf_symname_offs(alt.sym, &alt, stdout);
 553                 printf("/%c/%c/%c/%d ",
 554                         mispred_str( br->entries + i),
 555                         br->entries[i].flags.in_tx? 'X' : '-',
 556                         br->entries[i].flags.abort? 'A' : '-',
 557                         br->entries[i].flags.cycles);
 558         }
 559 }
 560
 561 #define MAXBB 16384UL
 562
 563 static int grab_bb(u8 *buffer, u64 start, u64 end,
 564                     struct machine *machine, struct thread *thread,
 565                     bool *is64bit, u8 *cpumode, bool last)
 566 {
 567         long offset, len;
 568         struct addr_location al;
 569         bool kernel;
 570
 571         if (!start || !end)
 572                 return 0;
 573
 574         kernel = machine__kernel_ip(machine, start);
 575         if (kernel)
 576                 *cpumode = PERF_RECORD_MISC_KERNEL;
 577         else
 578                 *cpumode = PERF_RECORD_MISC_USER;
 579
 580         /*
 581          * Block overlaps between kernel and user.
 582          * This can happen due to ring filtering
 583          * On Intel CPUs the entry into the kernel is filtered,
 584          * but the exit is not. Let the caller patch it up.
 585          */
 586         if (kernel != machine__kernel_ip(machine, end)) {
 587                 printf("\tblock %" PRIx64 "-%" PRIx64 " transfers between kernel and user\n",
 588                                 start, end);
 589                 return -ENXIO;
 590         }
 591
 592         memset(&al, 0, sizeof(al));
 593         if (end - start > MAXBB - MAXINSN) {
 594                 if (last)
 595                         printf("\tbrstack does not reach to final jump (%" PRIx64 "-%" PRIx64 ")\n", start, end);
 596                 else
 597                         printf("\tblock %" PRIx64 "-%" PRIx64 " (%" PRIu64 ") too long to dump\n", start, end, end - start);
 598                 return 0;
 599         }
 600
 601         thread__find_addr_map(thread, *cpumode, MAP__FUNCTION, start, &al);
 602         if (!al.map || !al.map->dso) {
 603                 printf("\tcannot resolve %" PRIx64 "-%" PRIx64 "\n", start, end);
 604                 return 0;
 605         }
 606         if (al.map->dso->data.status == DSO_DATA_STATUS_ERROR) {
 607                 printf("\tcannot resolve %" PRIx64 "-%" PRIx64 "\n", start, end);
 608                 return 0;
 609         }
 610
 611         /* Load maps to ensure dso->is_64_bit has been updated */
 612         map__load(al.map);
 613
 614         offset = al.map->map_ip(al.map, start);
 615         len = dso__data_read_offset(al.map->dso, machine, offset, (u8 *)buffer,
 616                                     end - start + MAXINSN);
 617
 618         *is64bit = al.map->dso->is_64_bit;
 619         if (len <= 0)
 620                 printf("\tcannot fetch code for block at %" PRIx64 "-%" PRIx64 "\n",
 621                         start, end);
 622         return len;
 623 }
 624
 625 static void print_jump(uint64_t ip, struct branch_entry *en,
 626                        struct perf_insn *x, u8 *inbuf, int len,
 627                        int insn)
 628 {
 629         printf("\t%016" PRIx64 "\t%-30s\t#%s%s%s%s",
 630                ip,
 631                dump_insn(x, ip, inbuf, len, NULL),
 632                en->flags.predicted ? " PRED" : "",
 633                en->flags.mispred ? " MISPRED" : "",
 634                en->flags.in_tx ? " INTX" : "",
 635                en->flags.abort ? " ABORT" : "");
 636         if (en->flags.cycles) {
 637                 printf(" %d cycles", en->flags.cycles);
 638                 if (insn)
 639                         printf(" %.2f IPC", (float)insn / en->flags.cycles);
 640         }
 641         putchar('\n');
 642 }
 643
 644 static void print_ip_sym(struct thread *thread, u8 cpumode, int cpu,
 645                          uint64_t addr, struct symbol **lastsym,
 646                          struct perf_event_attr *attr)
 647 {
 648         struct addr_location al;
 649         int off;
 650
 651         memset(&al, 0, sizeof(al));
 652
 653         thread__find_addr_map(thread, cpumode, MAP__FUNCTION, addr, &al);
 654         if (!al.map)
 655                 thread__find_addr_map(thread, cpumode, MAP__VARIABLE,
 656                                       addr, &al);
 657         if ((*lastsym) && al.addr >= (*lastsym)->start && al.addr < (*lastsym)->end)
 658                 return;
 659
 660         al.cpu = cpu;
 661         al.sym = NULL;
 662         if (al.map)
 663                 al.sym = map__find_symbol(al.map, al.addr);
 664
 665         if (!al.sym)
 666                 return;
 667
 668         if (al.addr < al.sym->end)
 669                 off = al.addr - al.sym->start;
 670         else
 671                 off = al.addr - al.map->start - al.sym->start;
 672         printf("\t%s", al.sym->name);
 673         if (off)
 674                 printf("%+d", off);
 675         putchar(':');
 676         if (PRINT_FIELD(SRCLINE))
 677                 map__fprintf_srcline(al.map, al.addr, "\t", stdout);
 678         putchar('\n');
 679         *lastsym = al.sym;
 680 }
 681
 682 static void print_sample_brstackinsn(struct perf_sample *sample,
 683                                      struct thread *thread,
 684                                      struct perf_event_attr *attr,
 685                                      struct machine *machine)
 686 {
 687         struct branch_stack *br = sample->branch_stack;
 688         u64 start, end;
 689         int i, insn, len, nr, ilen;
 690         struct perf_insn x;
 691         u8 buffer[MAXBB];
 692         unsigned off;
 693         struct symbol *lastsym = NULL;
 694
 695         if (!(br && br->nr))
 696                 return;
 697         nr = br->nr;
 698         if (max_blocks && nr > max_blocks + 1)
 699                 nr = max_blocks + 1;
 700
 701         x.thread = thread;
 702         x.cpu = sample->cpu;
 703
 704         putchar('\n');
 705
 706         /* Handle first from jump, of which we don't know the entry. */
 707         len = grab_bb(buffer, br->entries[nr-1].from,
 708                         br->entries[nr-1].from,
 709                         machine, thread, &x.is64bit, &x.cpumode, false);
 710         if (len > 0) {
 711                 print_ip_sym(thread, x.cpumode, x.cpu,
 712                              br->entries[nr - 1].from, &lastsym, attr);
 713                 print_jump(br->entries[nr - 1].from, &br->entries[nr - 1],
 714                             &x, buffer, len, 0);
 715         }
 716
 717         /* Print all blocks */
 718         for (i = nr - 2; i >= 0; i--) {
 719                 if (br->entries[i].from || br->entries[i].to)
 720                         pr_debug("%d: %" PRIx64 "-%" PRIx64 "\n", i,
 721                                  br->entries[i].from,
 722                                  br->entries[i].to);
 723                 start = br->entries[i + 1].to;
 724                 end   = br->entries[i].from;
 725
 726                 len = grab_bb(buffer, start, end, machine, thread, &x.is64bit, &x.cpumode, false);
 727                 /* Patch up missing kernel transfers due to ring filters */
 728                 if (len == -ENXIO && i > 0) {
 729                         end = br->entries[--i].from;
 730                         pr_debug("\tpatching up to %" PRIx64 "-%" PRIx64 "\n", start, end);
 731                         len = grab_bb(buffer, start, end, machine, thread, &x.is64bit, &x.cpumode, false);
 732                 }
 733                 if (len <= 0)
 734                         continue;
 735
 736                 insn = 0;
 737                 for (off = 0;; off += ilen) {
 738                         uint64_t ip = start + off;
 739
 740                         print_ip_sym(thread, x.cpumode, x.cpu, ip, &lastsym, attr);
 741                         if (ip == end) {
 742                                 print_jump(ip, &br->entries[i], &x, buffer + off, len - off, insn);
 743                                 break;
 744                         } else {
 745                                 printf("\t%016" PRIx64 "\t%s\n", ip,
 746                                         dump_insn(&x, ip, buffer + off, len - off, &ilen));
 747                                 if (ilen == 0)
 748                                         break;
 749                                 insn++;
 750                         }
 751                 }
 752         }
 753
 754         /*
 755          * Hit the branch? In this case we are already done, and the target
 756          * has not been executed yet.
 757          */
 758         if (br->entries[0].from == sample->ip)
 759                 return;
 760         if (br->entries[0].flags.abort)
 761                 return;
 762
 763         /*
 764          * Print final block upto sample
 765          */
 766         start = br->entries[0].to;
 767         end = sample->ip;
 768         len = grab_bb(buffer, start, end, machine, thread, &x.is64bit, &x.cpumode, true);
 769         print_ip_sym(thread, x.cpumode, x.cpu, start, &lastsym, attr);
 770         if (len <= 0) {
 771                 /* Print at least last IP if basic block did not work */
 772                 len = grab_bb(buffer, sample->ip, sample->ip,
 773                               machine, thread, &x.is64bit, &x.cpumode, false);
 774                 if (len <= 0)
 775                         return;
 776
 777                 printf("\t%016" PRIx64 "\t%s\n", sample->ip,
 778                         dump_insn(&x, sample->ip, buffer, len, NULL));
 779                 return;
 780         }
 781         for (off = 0; off <= end - start; off += ilen) {
 782                 printf("\t%016" PRIx64 "\t%s\n", start + off,
 783                         dump_insn(&x, start + off, buffer + off, len - off, &ilen));
 784                 if (ilen == 0)
 785                         break;
 786         }
 787 }
 788
 789 static void print_sample_addr(struct perf_sample *sample,
 790                           struct thread *thread,
 791                           struct perf_event_attr *attr)
 792 {
 793         struct addr_location al;
 794
 795         printf("%16" PRIx64, sample->addr);
 796
 797         if (!sample_addr_correlates_sym(attr))
 798                 return;
 799
 800         thread__resolve(thread, &al, sample);
 801
 802         if (PRINT_FIELD(SYM)) {
 803                 printf(" ");
 804                 if (PRINT_FIELD(SYMOFFSET))
 805                         symbol__fprintf_symname_offs(al.sym, &al, stdout);
 806                 else
 807                         symbol__fprintf_symname(al.sym, stdout);
 808         }
 809
 810         if (PRINT_FIELD(DSO)) {
 811                 printf(" (");
 812                 map__fprintf_dsoname(al.map, stdout);
 813                 printf(")");
 814         }
 815 }
 816
 817 static void print_sample_callindent(struct perf_sample *sample,
 818                                     struct perf_evsel *evsel,
 819                                     struct thread *thread,
 820                                     struct addr_location *al)
 821 {
 822         struct perf_event_attr *attr = &evsel->attr;
 823         size_t depth = thread_stack__depth(thread);
 824         struct addr_location addr_al;
 825         const char *name = NULL;
 826         static int spacing;
 827         int len = 0;
 828         u64 ip = 0;
 829
 830         /*
 831          * The 'return' has already been popped off the stack so the depth has
 832          * to be adjusted to match the 'call'.
 833          */
 834         if (thread->ts && sample->flags & PERF_IP_FLAG_RETURN)
 835                 depth += 1;
 836
 837         if (sample->flags & (PERF_IP_FLAG_CALL | PERF_IP_FLAG_TRACE_BEGIN)) {
 838                 if (sample_addr_correlates_sym(attr)) {
 839                         thread__resolve(thread, &addr_al, sample);
 840                         if (addr_al.sym)
 841                                 name = addr_al.sym->name;
 842                         else
 843                                 ip = sample->addr;
 844                 } else {
 845                         ip = sample->addr;
 846                 }
 847         } else if (sample->flags & (PERF_IP_FLAG_RETURN | PERF_IP_FLAG_TRACE_END)) {
 848                 if (al->sym)
 849                         name = al->sym->name;
 850                 else
 851                         ip = sample->ip;
 852         }
 853
 854         if (name)
 855                 len = printf("%*s%s", (int)depth * 4, "", name);
 856         else if (ip)
 857                 len = printf("%*s%16" PRIx64, (int)depth * 4, "", ip);
 858
 859         if (len < 0)
 860                 return;
 861
 862         /*
 863          * Try to keep the output length from changing frequently so that the
 864          * output lines up more nicely.
 865          */
 866         if (len > spacing || (len && len < spacing - 52))
 867                 spacing = round_up(len + 4, 32);
 868
 869         if (len < spacing)
 870                 printf("%*s", spacing - len, "");
 871 }
 872
 873 static void print_insn(struct perf_sample *sample,
 874                        struct perf_event_attr *attr,
 875                        struct thread *thread,
 876                        struct machine *machine)
 877 {
 878         if (PRINT_FIELD(INSNLEN))
 879                 printf(" ilen: %d", sample->insn_len);
 880         if (PRINT_FIELD(INSN)) {
 881                 int i;
 882
 883                 printf(" insn:");
 884                 for (i = 0; i < sample->insn_len; i++)
 885                         printf(" %02x", (unsigned char)sample->insn[i]);
 886         }
 887         if (PRINT_FIELD(BRSTACKINSN))
 888                 print_sample_brstackinsn(sample, thread, attr, machine);
 889 }
 890
 891 static void print_sample_bts(struct perf_sample *sample,
 892                              struct perf_evsel *evsel,
 893                              struct thread *thread,
 894                              struct addr_location *al,
 895                              struct machine *machine)
 896 {
 897         struct perf_event_attr *attr = &evsel->attr;
 898         bool print_srcline_last = false;
 899
 900         if (PRINT_FIELD(CALLINDENT))
 901                 print_sample_callindent(sample, evsel, thread, al);
 902
 903         /* print branch_from information */
 904         if (PRINT_FIELD(IP)) {
 905                 unsigned int print_opts = output[attr->type].print_ip_opts;
 906                 struct callchain_cursor *cursor = NULL;
 907
 908                 if (symbol_conf.use_callchain && sample->callchain &&
 909                     thread__resolve_callchain(al->thread, &callchain_cursor, evsel,
 910                                               sample, NULL, NULL, scripting_max_stack) == 0)
 911                         cursor = &callchain_cursor;
 912
 913                 if (cursor == NULL) {
 914                         putchar(' ');
 915                         if (print_opts & EVSEL__PRINT_SRCLINE) {
 916                                 print_srcline_last = true;
 917                                 print_opts &= ~EVSEL__PRINT_SRCLINE;
 918                         }
 919                 } else
 920                         putchar('\n');
 921
 922                 sample__fprintf_sym(sample, al, 0, print_opts, cursor, stdout);
 923         }
 924
 925         /* print branch_to information */
 926         if (PRINT_FIELD(ADDR) ||
 927             ((evsel->attr.sample_type & PERF_SAMPLE_ADDR) &&
 928              !output[attr->type].user_set)) {
 929                 printf(" => ");
 930                 print_sample_addr(sample, thread, attr);
 931         }
 932
 933         if (print_srcline_last)
 934                 map__fprintf_srcline(al->map, al->addr, "\n  ", stdout);
 935
 936         print_insn(sample, attr, thread, machine);
 937
 938         printf("\n");
 939 }
 940
 941 static struct {
 942         u32 flags;
 943         const char *name;
 944 } sample_flags[] = {
 945         {PERF_IP_FLAG_BRANCH | PERF_IP_FLAG_CALL, "call"},
 946         {PERF_IP_FLAG_BRANCH | PERF_IP_FLAG_RETURN, "return"},
 947         {PERF_IP_FLAG_BRANCH | PERF_IP_FLAG_CONDITIONAL, "jcc"},
 948         {PERF_IP_FLAG_BRANCH, "jmp"},
 949         {PERF_IP_FLAG_BRANCH | PERF_IP_FLAG_CALL | PERF_IP_FLAG_INTERRUPT, "int"},
 950         {PERF_IP_FLAG_BRANCH | PERF_IP_FLAG_RETURN | PERF_IP_FLAG_INTERRUPT, "iret"},
 951         {PERF_IP_FLAG_BRANCH | PERF_IP_FLAG_CALL | PERF_IP_FLAG_SYSCALLRET, "syscall"},
 952         {PERF_IP_FLAG_BRANCH | PERF_IP_FLAG_RETURN | PERF_IP_FLAG_SYSCALLRET, "sysret"},
 953         {PERF_IP_FLAG_BRANCH | PERF_IP_FLAG_ASYNC, "async"},
 954         {PERF_IP_FLAG_BRANCH | PERF_IP_FLAG_CALL | PERF_IP_FLAG_ASYNC | PERF_IP_FLAG_INTERRUPT, "hw int"},
 955         {PERF_IP_FLAG_BRANCH | PERF_IP_FLAG_TX_ABORT, "tx abrt"},
 956         {PERF_IP_FLAG_BRANCH | PERF_IP_FLAG_TRACE_BEGIN, "tr strt"},
 957         {PERF_IP_FLAG_BRANCH | PERF_IP_FLAG_TRACE_END, "tr end"},
 958         {0, NULL}
 959 };
 960
 961 static void print_sample_flags(u32 flags)
 962 {
 963         const char *chars = PERF_IP_FLAG_CHARS;
 964         const int n = strlen(PERF_IP_FLAG_CHARS);
 965         bool in_tx = flags & PERF_IP_FLAG_IN_TX;
 966         const char *name = NULL;
 967         char str[33];
 968         int i, pos = 0;
 969
 970         for (i = 0; sample_flags[i].name ; i++) {
 971                 if (sample_flags[i].flags == (flags & ~PERF_IP_FLAG_IN_TX)) {
 972                         name = sample_flags[i].name;
 973                         break;
 974                 }
 975         }
 976
 977         for (i = 0; i < n; i++, flags >>= 1) {
 978                 if (flags & 1)
 979                         str[pos++] = chars[i];
 980         }
 981         for (; i < 32; i++, flags >>= 1) {
 982                 if (flags & 1)
 983                         str[pos++] = '?';
 984         }
 985         str[pos] = 0;
 986
 987         if (name)
 988                 printf("  %-7s%4s ", name, in_tx ? "(x)" : "");
 989         else
 990                 printf("  %-11s ", str);
 991 }
 992
 993 struct printer_data {
 994         int line_no;
 995         bool hit_nul;
 996         bool is_printable;
 997 };
 998
 999 static void
1000 print_sample_bpf_output_printer(enum binary_printer_ops op,
1001                                 unsigned int val,
1002                                 void *extra)
1003 {
1004         unsigned char ch = (unsigned char)val;
1005         struct printer_data *printer_data = extra;
1006
1007         switch (op) {
1008         case BINARY_PRINT_DATA_BEGIN:
1009                 printf("\n");
1010                 break;
1011         case BINARY_PRINT_LINE_BEGIN:
1012                 printf("%17s", !printer_data->line_no ? "BPF output:" :
1013                                                         "           ");
1014                 break;
1015         case BINARY_PRINT_ADDR:
1016                 printf(" %04x:", val);
1017                 break;
1018         case BINARY_PRINT_NUM_DATA:
1019                 printf(" %02x", val);
1020                 break;
1021         case BINARY_PRINT_NUM_PAD:
1022                 printf("   ");
1023                 break;
1024         case BINARY_PRINT_SEP:
1025                 printf("  ");
1026                 break;
1027         case BINARY_PRINT_CHAR_DATA:
1028                 if (printer_data->hit_nul && ch)
1029                         printer_data->is_printable = false;
1030
1031                 if (!isprint(ch)) {
1032                         printf("%c", '.');
1033
1034                         if (!printer_data->is_printable)
1035                                 break;
1036
1037                         if (ch == '\0')
1038                                 printer_data->hit_nul = true;
1039                         else
1040                                 printer_data->is_printable = false;
1041                 } else {
1042                         printf("%c", ch);
1043                 }
1044                 break;
1045         case BINARY_PRINT_CHAR_PAD:
1046                 printf(" ");
1047                 break;
1048         case BINARY_PRINT_LINE_END:
1049                 printf("\n");
1050                 printer_data->line_no++;
1051                 break;
1052         case BINARY_PRINT_DATA_END:
1053         default:
1054                 break;
1055         }
1056 }
1057
1058 static void print_sample_bpf_output(struct perf_sample *sample)
1059 {
1060         unsigned int nr_bytes = sample->raw_size;
1061         struct printer_data printer_data = {0, false, true};
1062
1063         print_binary(sample->raw_data, nr_bytes, 8,
1064                      print_sample_bpf_output_printer, &printer_data);
1065
1066         if (printer_data.is_printable && printer_data.hit_nul)
1067                 printf("%17s \"%s\"\n", "BPF string:",
1068                        (char *)(sample->raw_data));
1069 }
1070
1071 struct perf_script {
1072         struct perf_tool        tool;
1073         struct perf_session     *session;
1074         bool                    show_task_events;
1075         bool                    show_mmap_events;
1076         bool                    show_switch_events;
1077         bool                    show_namespace_events;
1078         bool                    allocated;
1079         struct cpu_map          *cpus;
1080         struct thread_map       *threads;
1081         int                     name_width;
1082         const char              *time_str;
1083         struct perf_time_interval ptime;
1084 };
1085
1086 static int perf_evlist__max_name_len(struct perf_evlist *evlist)
1087 {
1088         struct perf_evsel *evsel;
1089         int max = 0;
1090
1091         evlist__for_each_entry(evlist, evsel) {
1092                 int len = strlen(perf_evsel__name(evsel));
1093
1094                 max = MAX(len, max);
1095         }
1096
1097         return max;
1098 }
1099
1100 static size_t data_src__printf(u64 data_src)
1101 {
1102         struct mem_info mi = { .data_src.val = data_src };
1103         char decode[100];
1104         char out[100];
1105         static int maxlen;
1106         int len;
1107
1108         perf_script__meminfo_scnprintf(decode, 100, &mi);
1109
1110         len = scnprintf(out, 100, "%16" PRIx64 " %s", data_src, decode);
1111         if (maxlen < len)
1112                 maxlen = len;
1113
1114         return printf("%-*s", maxlen, out);
1115 }
1116
1117 static void process_event(struct perf_script *script,
1118                           struct perf_sample *sample, struct perf_evsel *evsel,
1119                           struct addr_location *al,
1120                           struct machine *machine)
1121 {
1122         struct thread *thread = al->thread;
1123         struct perf_event_attr *attr = &evsel->attr;
1124
1125         if (output[attr->type].fields == 0)
1126                 return;
1127
1128         print_sample_start(sample, thread, evsel);
1129
1130         if (PRINT_FIELD(PERIOD))
1131                 printf("%10" PRIu64 " ", sample->period);
1132
1133         if (PRINT_FIELD(EVNAME)) {
1134                 const char *evname = perf_evsel__name(evsel);
1135
1136                 if (!script->name_width)
1137                         script->name_width = perf_evlist__max_name_len(script->session->evlist);
1138
1139                 printf("%*s: ", script->name_width,
1140                        evname ? evname : "[unknown]");
1141         }
1142
1143         if (print_flags)
1144                 print_sample_flags(sample->flags);
1145
1146         if (is_bts_event(attr)) {
1147                 print_sample_bts(sample, evsel, thread, al, machine);
1148                 return;
1149         }
1150
1151         if (PRINT_FIELD(TRACE))
1152                 event_format__print(evsel->tp_format, sample->cpu,
1153                                     sample->raw_data, sample->raw_size);
1154         if (PRINT_FIELD(ADDR))
1155                 print_sample_addr(sample, thread, attr);
1156
1157         if (PRINT_FIELD(DATA_SRC))
1158                 data_src__printf(sample->data_src);
1159
1160         if (PRINT_FIELD(WEIGHT))
1161                 printf("%16" PRIu64, sample->weight);
1162
1163         if (PRINT_FIELD(IP)) {
1164                 struct callchain_cursor *cursor = NULL;
1165
1166                 if (symbol_conf.use_callchain && sample->callchain &&
1167                     thread__resolve_callchain(al->thread, &callchain_cursor, evsel,
1168                                               sample, NULL, NULL, scripting_max_stack) == 0)
1169                         cursor = &callchain_cursor;
1170
1171                 putchar(cursor ? '\n' : ' ');
1172                 sample__fprintf_sym(sample, al, 0, output[attr->type].print_ip_opts, cursor, stdout);
1173         }
1174
1175         if (PRINT_FIELD(IREGS))
1176                 print_sample_iregs(sample, attr);
1177
1178         if (PRINT_FIELD(BRSTACK))
1179                 print_sample_brstack(sample);
1180         else if (PRINT_FIELD(BRSTACKSYM))
1181                 print_sample_brstacksym(sample, thread);
1182
1183         if (perf_evsel__is_bpf_output(evsel) && PRINT_FIELD(BPF_OUTPUT))
1184                 print_sample_bpf_output(sample);
1185         print_insn(sample, attr, thread, machine);
1186         printf("\n");
1187 }
1188
1189 static struct scripting_ops     *scripting_ops;
1190
1191 static void __process_stat(struct perf_evsel *counter, u64 tstamp)
1192 {
1193         int nthreads = thread_map__nr(counter->threads);
1194         int ncpus = perf_evsel__nr_cpus(counter);
1195         int cpu, thread;
1196         static int header_printed;
1197
1198         if (counter->system_wide)
1199                 nthreads = 1;
1200
1201         if (!header_printed) {
1202                 printf("%3s %8s %15s %15s %15s %15s %s\n",
1203                        "CPU", "THREAD", "VAL", "ENA", "RUN", "TIME", "EVENT");
1204                 header_printed = 1;
1205         }
1206
1207         for (thread = 0; thread < nthreads; thread++) {
1208                 for (cpu = 0; cpu < ncpus; cpu++) {
1209                         struct perf_counts_values *counts;
1210
1211                         counts = perf_counts(counter->counts, cpu, thread);
1212
1213                         printf("%3d %8d %15" PRIu64 " %15" PRIu64 " %15" PRIu64 " %15" PRIu64 " %s\n",
1214                                 counter->cpus->map[cpu],
1215                                 thread_map__pid(counter->threads, thread),
1216                                 counts->val,
1217                                 counts->ena,
1218                                 counts->run,
1219                                 tstamp,
1220                                 perf_evsel__name(counter));
1221                 }
1222         }
1223 }
1224
1225 static void process_stat(struct perf_evsel *counter, u64 tstamp)
1226 {
1227         if (scripting_ops && scripting_ops->process_stat)
1228                 scripting_ops->process_stat(&stat_config, counter, tstamp);
1229         else
1230                 __process_stat(counter, tstamp);
1231 }
1232
1233 static void process_stat_interval(u64 tstamp)
1234 {
1235         if (scripting_ops && scripting_ops->process_stat_interval)
1236                 scripting_ops->process_stat_interval(tstamp);
1237 }
1238
1239 static void setup_scripting(void)
1240 {
1241         setup_perl_scripting();
1242         setup_python_scripting();
1243 }
1244
1245 static int flush_scripting(void)
1246 {
1247         return scripting_ops ? scripting_ops->flush_script() : 0;
1248 }
1249
1250 static int cleanup_scripting(void)
1251 {
1252         pr_debug("\nperf script stopped\n");
1253
1254         return scripting_ops ? scripting_ops->stop_script() : 0;
1255 }
1256
1257 static int process_sample_event(struct perf_tool *tool,
1258                                 union perf_event *event,
1259                                 struct perf_sample *sample,
1260                                 struct perf_evsel *evsel,
1261                                 struct machine *machine)
1262 {
1263         struct perf_script *scr = container_of(tool, struct perf_script, tool);
1264         struct addr_location al;
1265
1266         if (perf_time__skip_sample(&scr->ptime, sample->time))
1267                 return 0;
1268
1269         if (debug_mode) {
1270                 if (sample->time < last_timestamp) {
1271                         pr_err("Samples misordered, previous: %" PRIu64
1272                                 " this: %" PRIu64 "\n", last_timestamp,
1273                                 sample->time);
1274                         nr_unordered++;
1275                 }
1276                 last_timestamp = sample->time;
1277                 return 0;
1278         }
1279
1280         if (machine__resolve(machine, &al, sample) < 0) {
1281                 pr_err("problem processing %d event, skipping it.\n",
1282                        event->header.type);
1283                 return -1;
1284         }
1285
1286         if (al.filtered)
1287                 goto out_put;
1288
1289         if (cpu_list && !test_bit(sample->cpu, cpu_bitmap))
1290                 goto out_put;
1291
1292         if (scripting_ops)
1293                 scripting_ops->process_event(event, sample, evsel, &al);
1294         else
1295                 process_event(scr, sample, evsel, &al, machine);
1296
1297 out_put:
1298         addr_location__put(&al);
1299         return 0;
1300 }
1301
1302 static int process_attr(struct perf_tool *tool, union perf_event *event,
1303                         struct perf_evlist **pevlist)
1304 {
1305         struct perf_script *scr = container_of(tool, struct perf_script, tool);
1306         struct perf_evlist *evlist;
1307         struct perf_evsel *evsel, *pos;
1308         int err;
1309
1310         err = perf_event__process_attr(tool, event, pevlist);
1311         if (err)
1312                 return err;
1313
1314         evlist = *pevlist;
1315         evsel = perf_evlist__last(*pevlist);
1316
1317         if (evsel->attr.type >= PERF_TYPE_MAX)
1318                 return 0;
1319
1320         evlist__for_each_entry(evlist, pos) {
1321                 if (pos->attr.type == evsel->attr.type && pos != evsel)
1322                         return 0;
1323         }
1324
1325         set_print_ip_opts(&evsel->attr);
1326
1327         if (evsel->attr.sample_type)
1328                 err = perf_evsel__check_attr(evsel, scr->session);
1329
1330         return err;
1331 }
1332
1333 static int process_comm_event(struct perf_tool *tool,
1334                               union perf_event *event,
1335                               struct perf_sample *sample,
1336                               struct machine *machine)
1337 {
1338         struct thread *thread;
1339         struct perf_script *script = container_of(tool, struct perf_script, tool);
1340         struct perf_session *session = script->session;
1341         struct perf_evsel *evsel = perf_evlist__id2evsel(session->evlist, sample->id);
1342         int ret = -1;
1343
1344         thread = machine__findnew_thread(machine, event->comm.pid, event->comm.tid);
1345         if (thread == NULL) {
1346                 pr_debug("problem processing COMM event, skipping it.\n");
1347                 return -1;
1348         }
1349
1350         if (perf_event__process_comm(tool, event, sample, machine) < 0)
1351                 goto out;
1352
1353         if (!evsel->attr.sample_id_all) {
1354                 sample->cpu = 0;
1355                 sample->time = 0;
1356                 sample->tid = event->comm.tid;
1357                 sample->pid = event->comm.pid;
1358         }
1359         print_sample_start(sample, thread, evsel);
1360         perf_event__fprintf(event, stdout);
1361         ret = 0;
1362 out:
1363         thread__put(thread);
1364         return ret;
1365 }
1366
1367 static int process_namespaces_event(struct perf_tool *tool,
1368                                     union perf_event *event,
1369                                     struct perf_sample *sample,
1370                                     struct machine *machine)
1371 {
1372         struct thread *thread;
1373         struct perf_script *script = container_of(tool, struct perf_script, tool);
1374         struct perf_session *session = script->session;
1375         struct perf_evsel *evsel = perf_evlist__id2evsel(session->evlist, sample->id);
1376         int ret = -1;
1377
1378         thread = machine__findnew_thread(machine, event->namespaces.pid,
1379                                          event->namespaces.tid);
1380         if (thread == NULL) {
1381                 pr_debug("problem processing NAMESPACES event, skipping it.\n");
1382                 return -1;
1383         }
1384
1385         if (perf_event__process_namespaces(tool, event, sample, machine) < 0)
1386                 goto out;
1387
1388         if (!evsel->attr.sample_id_all) {
1389                 sample->cpu = 0;
1390                 sample->time = 0;
1391                 sample->tid = event->namespaces.tid;
1392                 sample->pid = event->namespaces.pid;
1393         }
1394         print_sample_start(sample, thread, evsel);
1395         perf_event__fprintf(event, stdout);
1396         ret = 0;
1397 out:
1398         thread__put(thread);
1399         return ret;
1400 }
1401
1402 static int process_fork_event(struct perf_tool *tool,
1403                               union perf_event *event,
1404                               struct perf_sample *sample,
1405                               struct machine *machine)
1406 {
1407         struct thread *thread;
1408         struct perf_script *script = container_of(tool, struct perf_script, tool);
1409         struct perf_session *session = script->session;
1410         struct perf_evsel *evsel = perf_evlist__id2evsel(session->evlist, sample->id);
1411
1412         if (perf_event__process_fork(tool, event, sample, machine) < 0)
1413                 return -1;
1414
1415         thread = machine__findnew_thread(machine, event->fork.pid, event->fork.tid);
1416         if (thread == NULL) {
1417                 pr_debug("problem processing FORK event, skipping it.\n");
1418                 return -1;
1419         }
1420
1421         if (!evsel->attr.sample_id_all) {
1422                 sample->cpu = 0;
1423                 sample->time = event->fork.time;
1424                 sample->tid = event->fork.tid;
1425                 sample->pid = event->fork.pid;
1426         }
1427         print_sample_start(sample, thread, evsel);
1428         perf_event__fprintf(event, stdout);
1429         thread__put(thread);
1430
1431         return 0;
1432 }
1433 static int process_exit_event(struct perf_tool *tool,
1434                               union perf_event *event,
1435                               struct perf_sample *sample,
1436                               struct machine *machine)
1437 {
1438         int err = 0;
1439         struct thread *thread;
1440         struct perf_script *script = container_of(tool, struct perf_script, tool);
1441         struct perf_session *session = script->session;
1442         struct perf_evsel *evsel = perf_evlist__id2evsel(session->evlist, sample->id);
1443
1444         thread = machine__findnew_thread(machine, event->fork.pid, event->fork.tid);
1445         if (thread == NULL) {
1446                 pr_debug("problem processing EXIT event, skipping it.\n");
1447                 return -1;
1448         }
1449
1450         if (!evsel->attr.sample_id_all) {
1451                 sample->cpu = 0;
1452                 sample->time = 0;
1453                 sample->tid = event->fork.tid;
1454                 sample->pid = event->fork.pid;
1455         }
1456         print_sample_start(sample, thread, evsel);
1457         perf_event__fprintf(event, stdout);
1458
1459         if (perf_event__process_exit(tool, event, sample, machine) < 0)
1460                 err = -1;
1461
1462         thread__put(thread);
1463         return err;
1464 }
1465
1466 static int process_mmap_event(struct perf_tool *tool,
1467                               union perf_event *event,
1468                               struct perf_sample *sample,
1469                               struct machine *machine)
1470 {
1471         struct thread *thread;
1472         struct perf_script *script = container_of(tool, struct perf_script, tool);
1473         struct perf_session *session = script->session;
1474         struct perf_evsel *evsel = perf_evlist__id2evsel(session->evlist, sample->id);
1475
1476         if (perf_event__process_mmap(tool, event, sample, machine) < 0)
1477                 return -1;
1478
1479         thread = machine__findnew_thread(machine, event->mmap.pid, event->mmap.tid);
1480         if (thread == NULL) {
1481                 pr_debug("problem processing MMAP event, skipping it.\n");
1482                 return -1;
1483         }
1484
1485         if (!evsel->attr.sample_id_all) {
1486                 sample->cpu = 0;
1487                 sample->time = 0;
1488                 sample->tid = event->mmap.tid;
1489                 sample->pid = event->mmap.pid;
1490         }
1491         print_sample_start(sample, thread, evsel);
1492         perf_event__fprintf(event, stdout);
1493         thread__put(thread);
1494         return 0;
1495 }
1496
1497 static int process_mmap2_event(struct perf_tool *tool,
1498                               union perf_event *event,
1499                               struct perf_sample *sample,
1500                               struct machine *machine)
1501 {
1502         struct thread *thread;
1503         struct perf_script *script = container_of(tool, struct perf_script, tool);
1504         struct perf_session *session = script->session;
1505         struct perf_evsel *evsel = perf_evlist__id2evsel(session->evlist, sample->id);
1506
1507         if (perf_event__process_mmap2(tool, event, sample, machine) < 0)
1508                 return -1;
1509
1510         thread = machine__findnew_thread(machine, event->mmap2.pid, event->mmap2.tid);
1511         if (thread == NULL) {
1512                 pr_debug("problem processing MMAP2 event, skipping it.\n");
1513                 return -1;
1514         }
1515
1516         if (!evsel->attr.sample_id_all) {
1517                 sample->cpu = 0;
1518                 sample->time = 0;
1519                 sample->tid = event->mmap2.tid;
1520                 sample->pid = event->mmap2.pid;
1521         }
1522         print_sample_start(sample, thread, evsel);
1523         perf_event__fprintf(event, stdout);
1524         thread__put(thread);
1525         return 0;
1526 }
1527
1528 static int process_switch_event(struct perf_tool *tool,
1529                                 union perf_event *event,
1530                                 struct perf_sample *sample,
1531                                 struct machine *machine)
1532 {
1533         struct thread *thread;
1534         struct perf_script *script = container_of(tool, struct perf_script, tool);
1535         struct perf_session *session = script->session;
1536         struct perf_evsel *evsel = perf_evlist__id2evsel(session->evlist, sample->id);
1537
1538         if (perf_event__process_switch(tool, event, sample, machine) < 0)
1539                 return -1;
1540
1541         thread = machine__findnew_thread(machine, sample->pid,
1542                                          sample->tid);
1543         if (thread == NULL) {
1544                 pr_debug("problem processing SWITCH event, skipping it.\n");
1545                 return -1;
1546         }
1547
1548         print_sample_start(sample, thread, evsel);
1549         perf_event__fprintf(event, stdout);
1550         thread__put(thread);
1551         return 0;
1552 }
1553
1554 static void sig_handler(int sig __maybe_unused)
1555 {
1556         session_done = 1;
1557 }
1558
1559 static int __cmd_script(struct perf_script *script)
1560 {
1561         int ret;
1562
1563         signal(SIGINT, sig_handler);
1564
1565         /* override event processing functions */
1566         if (script->show_task_events) {
1567                 script->tool.comm = process_comm_event;
1568                 script->tool.fork = process_fork_event;
1569                 script->tool.exit = process_exit_event;
1570         }
1571         if (script->show_mmap_events) {
1572                 script->tool.mmap = process_mmap_event;
1573                 script->tool.mmap2 = process_mmap2_event;
1574         }
1575         if (script->show_switch_events)
1576                 script->tool.context_switch = process_switch_event;
1577         if (script->show_namespace_events)
1578                 script->tool.namespaces = process_namespaces_event;
1579
1580         ret = perf_session__process_events(script->session);
1581
1582         if (debug_mode)
1583                 pr_err("Misordered timestamps: %" PRIu64 "\n", nr_unordered);
1584
1585         return ret;
1586 }
1587
1588 struct script_spec {
1589         struct list_head        node;
1590         struct scripting_ops    *ops;
1591         char                    spec[0];
1592 };
1593
1594 static LIST_HEAD(script_specs);
1595
1596 static struct script_spec *script_spec__new(const char *spec,
1597                                             struct scripting_ops *ops)
1598 {
1599         struct script_spec *s = malloc(sizeof(*s) + strlen(spec) + 1);
1600
1601         if (s != NULL) {
1602                 strcpy(s->spec, spec);
1603                 s->ops = ops;
1604         }
1605
1606         return s;
1607 }
1608
1609 static void script_spec__add(struct script_spec *s)
1610 {
1611         list_add_tail(&s->node, &script_specs);
1612 }
1613
1614 static struct script_spec *script_spec__find(const char *spec)
1615 {
1616         struct script_spec *s;
1617
1618         list_for_each_entry(s, &script_specs, node)
1619                 if (strcasecmp(s->spec, spec) == 0)
1620                         return s;
1621         return NULL;
1622 }
1623
1624 int script_spec_register(const char *spec, struct scripting_ops *ops)
1625 {
1626         struct script_spec *s;
1627
1628         s = script_spec__find(spec);
1629         if (s)
1630                 return -1;
1631
1632         s = script_spec__new(spec, ops);
1633         if (!s)
1634                 return -1;
1635         else
1636                 script_spec__add(s);
1637
1638         return 0;
1639 }
1640
1641 static struct scripting_ops *script_spec__lookup(const char *spec)
1642 {
1643         struct script_spec *s = script_spec__find(spec);
1644         if (!s)
1645                 return NULL;
1646
1647         return s->ops;
1648 }
1649
1650 static void list_available_languages(void)
1651 {
1652         struct script_spec *s;
1653
1654         fprintf(stderr, "\n");
1655         fprintf(stderr, "Scripting language extensions (used in "
1656                 "perf script -s [spec:]script.[spec]):\n\n");
1657
1658         list_for_each_entry(s, &script_specs, node)
1659                 fprintf(stderr, "  %-42s [%s]\n", s->spec, s->ops->name);
1660
1661         fprintf(stderr, "\n");
1662 }
1663
1664 static int parse_scriptname(const struct option *opt __maybe_unused,
1665                             const char *str, int unset __maybe_unused)
1666 {
1667         char spec[PATH_MAX];
1668         const char *script, *ext;
1669         int len;
1670
1671         if (strcmp(str, "lang") == 0) {
1672                 list_available_languages();
1673                 exit(0);
1674         }
1675
1676         script = strchr(str, ':');
1677         if (script) {
1678                 len = script - str;
1679                 if (len >= PATH_MAX) {
1680                         fprintf(stderr, "invalid language specifier");
1681                         return -1;
1682                 }
1683                 strncpy(spec, str, len);
1684                 spec[len] = '\0';
1685                 scripting_ops = script_spec__lookup(spec);
1686                 if (!scripting_ops) {
1687                         fprintf(stderr, "invalid language specifier");
1688                         return -1;
1689                 }
1690                 script++;
1691         } else {
1692                 script = str;
1693                 ext = strrchr(script, '.');
1694                 if (!ext) {
1695                         fprintf(stderr, "invalid script extension");
1696                         return -1;
1697                 }
1698                 scripting_ops = script_spec__lookup(++ext);
1699                 if (!scripting_ops) {
1700                         fprintf(stderr, "invalid script extension");
1701                         return -1;
1702                 }
1703         }
1704
1705         script_name = strdup(script);
1706
1707         return 0;
1708 }
1709
1710 static int parse_output_fields(const struct option *opt __maybe_unused,
1711                             const char *arg, int unset __maybe_unused)
1712 {
1713         char *tok, *strtok_saveptr = NULL;
1714         int i, imax = ARRAY_SIZE(all_output_options);
1715         int j;
1716         int rc = 0;
1717         char *str = strdup(arg);
1718         int type = -1;
1719
1720         if (!str)
1721                 return -ENOMEM;
1722
1723         /* first word can state for which event type the user is specifying
1724          * the fields. If no type exists, the specified fields apply to all
1725          * event types found in the file minus the invalid fields for a type.
1726          */
1727         tok = strchr(str, ':');
1728         if (tok) {
1729                 *tok = '\0';
1730                 tok++;
1731                 if (!strcmp(str, "hw"))
1732                         type = PERF_TYPE_HARDWARE;
1733                 else if (!strcmp(str, "sw"))
1734                         type = PERF_TYPE_SOFTWARE;
1735                 else if (!strcmp(str, "trace"))
1736                         type = PERF_TYPE_TRACEPOINT;
1737                 else if (!strcmp(str, "raw"))
1738                         type = PERF_TYPE_RAW;
1739                 else if (!strcmp(str, "break"))
1740                         type = PERF_TYPE_BREAKPOINT;
1741                 else {
1742                         fprintf(stderr, "Invalid event type in field string.\n");
1743                         rc = -EINVAL;
1744                         goto out;
1745                 }
1746
1747                 if (output[type].user_set)
1748                         pr_warning("Overriding previous field request for %s events.\n",
1749                                    event_type(type));
1750
1751                 output[type].fields = 0;
1752                 output[type].user_set = true;
1753                 output[type].wildcard_set = false;
1754
1755         } else {
1756                 tok = str;
1757                 if (strlen(str) == 0) {
1758                         fprintf(stderr,
1759                                 "Cannot set fields to 'none' for all event types.\n");
1760                         rc = -EINVAL;
1761                         goto out;
1762                 }
1763
1764                 if (output_set_by_user())
1765                         pr_warning("Overriding previous field request for all events.\n");
1766
1767                 for (j = 0; j < PERF_TYPE_MAX; ++j) {
1768                         output[j].fields = 0;
1769                         output[j].user_set = true;
1770                         output[j].wildcard_set = true;
1771                 }
1772         }
1773
1774         for (tok = strtok_r(tok, ",", &strtok_saveptr); tok; tok = strtok_r(NULL, ",", &strtok_saveptr)) {
1775                 for (i = 0; i < imax; ++i) {
1776                         if (strcmp(tok, all_output_options[i].str) == 0)
1777                                 break;
1778                 }
1779                 if (i == imax && strcmp(tok, "flags") == 0) {
1780                         print_flags = true;
1781                         continue;
1782                 }
1783                 if (i == imax) {
1784                         fprintf(stderr, "Invalid field requested.\n");
1785                         rc = -EINVAL;
1786                         goto out;
1787                 }
1788
1789                 if (type == -1) {
1790                         /* add user option to all events types for
1791                          * which it is valid
1792                          */
1793                         for (j = 0; j < PERF_TYPE_MAX; ++j) {
1794                                 if (output[j].invalid_fields & all_output_options[i].field) {
1795                                         pr_warning("\'%s\' not valid for %s events. Ignoring.\n",
1796                                                    all_output_options[i].str, event_type(j));
1797                                 } else
1798                                         output[j].fields |= all_output_options[i].field;
1799                         }
1800                 } else {
1801                         if (output[type].invalid_fields & all_output_options[i].field) {
1802                                 fprintf(stderr, "\'%s\' not valid for %s events.\n",
1803                                          all_output_options[i].str, event_type(type));
1804
1805                                 rc = -EINVAL;
1806                                 goto out;
1807                         }
1808                         output[type].fields |= all_output_options[i].field;
1809                 }
1810         }
1811
1812         if (type >= 0) {
1813                 if (output[type].fields == 0) {
1814                         pr_debug("No fields requested for %s type. "
1815                                  "Events will not be displayed.\n", event_type(type));
1816                 }
1817         }
1818
1819 out:
1820         free(str);
1821         return rc;
1822 }
1823
1824 /* Helper function for filesystems that return a dent->d_type DT_UNKNOWN */
1825 static int is_directory(const char *base_path, const struct dirent *dent)
1826 {
1827         char path[PATH_MAX];
1828         struct stat st;
1829
1830         sprintf(path, "%s/%s", base_path, dent->d_name);
1831         if (stat(path, &st))
1832                 return 0;
1833
1834         return S_ISDIR(st.st_mode);
1835 }
1836
1837 #define for_each_lang(scripts_path, scripts_dir, lang_dirent)           \
1838         while ((lang_dirent = readdir(scripts_dir)) != NULL)            \
1839                 if ((lang_dirent->d_type == DT_DIR ||                   \
1840                      (lang_dirent->d_type == DT_UNKNOWN &&              \
1841                       is_directory(scripts_path, lang_dirent))) &&      \
1842                     (strcmp(lang_dirent->d_name, ".")) &&               \
1843                     (strcmp(lang_dirent->d_name, "..")))
1844
1845 #define for_each_script(lang_path, lang_dir, script_dirent)             \
1846         while ((script_dirent = readdir(lang_dir)) != NULL)             \
1847                 if (script_dirent->d_type != DT_DIR &&                  \
1848                     (script_dirent->d_type != DT_UNKNOWN ||             \
1849                      !is_directory(lang_path, script_dirent)))
1850
1851
1852 #define RECORD_SUFFIX                   "-record"
1853 #define REPORT_SUFFIX                   "-report"
1854
1855 struct script_desc {
1856         struct list_head        node;
1857         char                    *name;
1858         char                    *half_liner;
1859         char                    *args;
1860 };
1861
1862 static LIST_HEAD(script_descs);
1863
1864 static struct script_desc *script_desc__new(const char *name)
1865 {
1866         struct script_desc *s = zalloc(sizeof(*s));
1867
1868         if (s != NULL && name)
1869                 s->name = strdup(name);
1870
1871         return s;
1872 }
1873
1874 static void script_desc__delete(struct script_desc *s)
1875 {
1876         zfree(&s->name);
1877         zfree(&s->half_liner);
1878         zfree(&s->args);
1879         free(s);
1880 }
1881
1882 static void script_desc__add(struct script_desc *s)
1883 {
1884         list_add_tail(&s->node, &script_descs);
1885 }
1886
1887 static struct script_desc *script_desc__find(const char *name)
1888 {
1889         struct script_desc *s;
1890
1891         list_for_each_entry(s, &script_descs, node)
1892                 if (strcasecmp(s->name, name) == 0)
1893                         return s;
1894         return NULL;
1895 }
1896
1897 static struct script_desc *script_desc__findnew(const char *name)
1898 {
1899         struct script_desc *s = script_desc__find(name);
1900
1901         if (s)
1902                 return s;
1903
1904         s = script_desc__new(name);
1905         if (!s)
1906                 goto out_delete_desc;
1907
1908         script_desc__add(s);
1909
1910         return s;
1911
1912 out_delete_desc:
1913         script_desc__delete(s);
1914
1915         return NULL;
1916 }
1917
1918 static const char *ends_with(const char *str, const char *suffix)
1919 {
1920         size_t suffix_len = strlen(suffix);
1921         const char *p = str;
1922
1923         if (strlen(str) > suffix_len) {
1924                 p = str + strlen(str) - suffix_len;
1925                 if (!strncmp(p, suffix, suffix_len))
1926                         return p;
1927         }
1928
1929         return NULL;
1930 }
1931
1932 static int read_script_info(struct script_desc *desc, const char *filename)
1933 {
1934         char line[BUFSIZ], *p;
1935         FILE *fp;
1936
1937         fp = fopen(filename, "r");
1938         if (!fp)
1939                 return -1;
1940
1941         while (fgets(line, sizeof(line), fp)) {
1942                 p = ltrim(line);
1943                 if (strlen(p) == 0)
1944                         continue;
1945                 if (*p != '#')
1946                         continue;
1947                 p++;
1948                 if (strlen(p) && *p == '!')
1949                         continue;
1950
1951                 p = ltrim(p);
1952                 if (strlen(p) && p[strlen(p) - 1] == '\n')
1953                         p[strlen(p) - 1] = '\0';
1954
1955                 if (!strncmp(p, "description:", strlen("description:"))) {
1956                         p += strlen("description:");
1957                         desc->half_liner = strdup(ltrim(p));
1958                         continue;
1959                 }
1960
1961                 if (!strncmp(p, "args:", strlen("args:"))) {
1962                         p += strlen("args:");
1963                         desc->args = strdup(ltrim(p));
1964                         continue;
1965                 }
1966         }
1967
1968         fclose(fp);
1969
1970         return 0;
1971 }
1972
1973 static char *get_script_root(struct dirent *script_dirent, const char *suffix)
1974 {
1975         char *script_root, *str;
1976
1977         script_root = strdup(script_dirent->d_name);
1978         if (!script_root)
1979                 return NULL;
1980
1981         str = (char *)ends_with(script_root, suffix);
1982         if (!str) {
1983                 free(script_root);
1984                 return NULL;
1985         }
1986
1987         *str = '\0';
1988         return script_root;
1989 }
1990
1991 static int list_available_scripts(const struct option *opt __maybe_unused,
1992                                   const char *s __maybe_unused,
1993                                   int unset __maybe_unused)
1994 {
1995         struct dirent *script_dirent, *lang_dirent;
1996         char scripts_path[MAXPATHLEN];
1997         DIR *scripts_dir, *lang_dir;
1998         char script_path[MAXPATHLEN];
1999         char lang_path[MAXPATHLEN];
2000         struct script_desc *desc;
2001         char first_half[BUFSIZ];
2002         char *script_root;
2003
2004         snprintf(scripts_path, MAXPATHLEN, "%s/scripts", get_argv_exec_path());
2005
2006         scripts_dir = opendir(scripts_path);
2007         if (!scripts_dir) {
2008                 fprintf(stdout,
2009                         "open(%s) failed.\n"
2010                         "Check \"PERF_EXEC_PATH\" env to set scripts dir.\n",
2011                         scripts_path);
2012                 exit(-1);
2013         }
2014
2015         for_each_lang(scripts_path, scripts_dir, lang_dirent) {
2016                 snprintf(lang_path, MAXPATHLEN, "%s/%s/bin", scripts_path,
2017                          lang_dirent->d_name);
2018                 lang_dir = opendir(lang_path);
2019                 if (!lang_dir)
2020                         continue;
2021
2022                 for_each_script(lang_path, lang_dir, script_dirent) {
2023                         script_root = get_script_root(script_dirent, REPORT_SUFFIX);
2024                         if (script_root) {
2025                                 desc = script_desc__findnew(script_root);
2026                                 snprintf(script_path, MAXPATHLEN, "%s/%s",
2027                                          lang_path, script_dirent->d_name);
2028                                 read_script_info(desc, script_path);
2029                                 free(script_root);
2030                         }
2031                 }
2032         }
2033
2034         fprintf(stdout, "List of available trace scripts:\n");
2035         list_for_each_entry(desc, &script_descs, node) {
2036                 sprintf(first_half, "%s %s", desc->name,
2037                         desc->args ? desc->args : "");
2038                 fprintf(stdout, "  %-36s %s\n", first_half,
2039                         desc->half_liner ? desc->half_liner : "");
2040         }
2041
2042         exit(0);
2043 }
2044
2045 /*
2046  * Some scripts specify the required events in their "xxx-record" file,
2047  * this function will check if the events in perf.data match those
2048  * mentioned in the "xxx-record".
2049  *
2050  * Fixme: All existing "xxx-record" are all in good formats "-e event ",
2051  * which is covered well now. And new parsing code should be added to
2052  * cover the future complexing formats like event groups etc.
2053  */
2054 static int check_ev_match(char *dir_name, char *scriptname,
2055                         struct perf_session *session)
2056 {
2057         char filename[MAXPATHLEN], evname[128];
2058         char line[BUFSIZ], *p;
2059         struct perf_evsel *pos;
2060         int match, len;
2061         FILE *fp;
2062
2063         sprintf(filename, "%s/bin/%s-record", dir_name, scriptname);
2064
2065         fp = fopen(filename, "r");
2066         if (!fp)
2067                 return -1;
2068
2069         while (fgets(line, sizeof(line), fp)) {
2070                 p = ltrim(line);
2071                 if (*p == '#')
2072                         continue;
2073
2074                 while (strlen(p)) {
2075                         p = strstr(p, "-e");
2076                         if (!p)
2077                                 break;
2078
2079                         p += 2;
2080                         p = ltrim(p);
2081                         len = strcspn(p, " \t");
2082                         if (!len)
2083                                 break;
2084
2085                         snprintf(evname, len + 1, "%s", p);
2086
2087                         match = 0;
2088                         evlist__for_each_entry(session->evlist, pos) {
2089                                 if (!strcmp(perf_evsel__name(pos), evname)) {
2090                                         match = 1;
2091                                         break;
2092                                 }
2093                         }
2094
2095                         if (!match) {
2096                                 fclose(fp);
2097                                 return -1;
2098                         }
2099                 }
2100         }
2101
2102         fclose(fp);
2103         return 0;
2104 }
2105
2106 /*
2107  * Return -1 if none is found, otherwise the actual scripts number.
2108  *
2109  * Currently the only user of this function is the script browser, which
2110  * will list all statically runnable scripts, select one, execute it and
2111  * show the output in a perf browser.
2112  */
2113 int find_scripts(char **scripts_array, char **scripts_path_array)
2114 {
2115         struct dirent *script_dirent, *lang_dirent;
2116         char scripts_path[MAXPATHLEN], lang_path[MAXPATHLEN];
2117         DIR *scripts_dir, *lang_dir;
2118         struct perf_session *session;
2119         struct perf_data_file file = {
2120                 .path = input_name,
2121                 .mode = PERF_DATA_MODE_READ,
2122         };
2123         char *temp;
2124         int i = 0;
2125
2126         session = perf_session__new(&file, false, NULL);
2127         if (!session)
2128                 return -1;
2129
2130         snprintf(scripts_path, MAXPATHLEN, "%s/scripts", get_argv_exec_path());
2131
2132         scripts_dir = opendir(scripts_path);
2133         if (!scripts_dir) {
2134                 perf_session__delete(session);
2135                 return -1;
2136         }
2137
2138         for_each_lang(scripts_path, scripts_dir, lang_dirent) {
2139                 snprintf(lang_path, MAXPATHLEN, "%s/%s", scripts_path,
2140                          lang_dirent->d_name);
2141 #ifdef NO_LIBPERL
2142                 if (strstr(lang_path, "perl"))
2143                         continue;
2144 #endif
2145 #ifdef NO_LIBPYTHON
2146                 if (strstr(lang_path, "python"))
2147                         continue;
2148 #endif
2149
2150                 lang_dir = opendir(lang_path);
2151                 if (!lang_dir)
2152                         continue;
2153
2154                 for_each_script(lang_path, lang_dir, script_dirent) {
2155                         /* Skip those real time scripts: xxxtop.p[yl] */
2156                         if (strstr(script_dirent->d_name, "top."))
2157                                 continue;
2158                         sprintf(scripts_path_array[i], "%s/%s", lang_path,
2159                                 script_dirent->d_name);
2160                         temp = strchr(script_dirent->d_name, '.');
2161                         snprintf(scripts_array[i],
2162                                 (temp - script_dirent->d_name) + 1,
2163                                 "%s", script_dirent->d_name);
2164
2165                         if (check_ev_match(lang_path,
2166                                         scripts_array[i], session))
2167                                 continue;
2168
2169                         i++;
2170                 }
2171                 closedir(lang_dir);
2172         }
2173
2174         closedir(scripts_dir);
2175         perf_session__delete(session);
2176         return i;
2177 }
2178
2179 static char *get_script_path(const char *script_root, const char *suffix)
2180 {
2181         struct dirent *script_dirent, *lang_dirent;
2182         char scripts_path[MAXPATHLEN];
2183         char script_path[MAXPATHLEN];
2184         DIR *scripts_dir, *lang_dir;
2185         char lang_path[MAXPATHLEN];
2186         char *__script_root;
2187
2188         snprintf(scripts_path, MAXPATHLEN, "%s/scripts", get_argv_exec_path());
2189
2190         scripts_dir = opendir(scripts_path);
2191         if (!scripts_dir)
2192                 return NULL;
2193
2194         for_each_lang(scripts_path, scripts_dir, lang_dirent) {
2195                 snprintf(lang_path, MAXPATHLEN, "%s/%s/bin", scripts_path,
2196                          lang_dirent->d_name);
2197                 lang_dir = opendir(lang_path);
2198                 if (!lang_dir)
2199                         continue;
2200
2201                 for_each_script(lang_path, lang_dir, script_dirent) {
2202                         __script_root = get_script_root(script_dirent, suffix);
2203                         if (__script_root && !strcmp(script_root, __script_root)) {
2204                                 free(__script_root);
2205                                 closedir(lang_dir);
2206                                 closedir(scripts_dir);
2207                                 snprintf(script_path, MAXPATHLEN, "%s/%s",
2208                                          lang_path, script_dirent->d_name);
2209                                 return strdup(script_path);
2210                         }
2211                         free(__script_root);
2212                 }
2213                 closedir(lang_dir);
2214         }
2215         closedir(scripts_dir);
2216
2217         return NULL;
2218 }
2219
2220 static bool is_top_script(const char *script_path)
2221 {
2222         return ends_with(script_path, "top") == NULL ? false : true;
2223 }
2224
2225 static int has_required_arg(char *script_path)
2226 {
2227         struct script_desc *desc;
2228         int n_args = 0;
2229         char *p;
2230
2231         desc = script_desc__new(NULL);
2232
2233         if (read_script_info(desc, script_path))
2234                 goto out;
2235
2236         if (!desc->args)
2237                 goto out;
2238
2239         for (p = desc->args; *p; p++)
2240                 if (*p == '<')
2241                         n_args++;
2242 out:
2243         script_desc__delete(desc);
2244
2245         return n_args;
2246 }
2247
2248 static int have_cmd(int argc, const char **argv)
2249 {
2250         char **__argv = malloc(sizeof(const char *) * argc);
2251
2252         if (!__argv) {
2253                 pr_err("malloc failed\n");
2254                 return -1;
2255         }
2256
2257         memcpy(__argv, argv, sizeof(const char *) * argc);
2258         argc = parse_options(argc, (const char **)__argv, record_options,
2259                              NULL, PARSE_OPT_STOP_AT_NON_OPTION);
2260         free(__argv);
2261
2262         system_wide = (argc == 0);
2263
2264         return 0;
2265 }
2266
2267 static void script__setup_sample_type(struct perf_script *script)
2268 {
2269         struct perf_session *session = script->session;
2270         u64 sample_type = perf_evlist__combined_sample_type(session->evlist);
2271
2272         if (symbol_conf.use_callchain || symbol_conf.cumulate_callchain) {
2273                 if ((sample_type & PERF_SAMPLE_REGS_USER) &&
2274                     (sample_type & PERF_SAMPLE_STACK_USER))
2275                         callchain_param.record_mode = CALLCHAIN_DWARF;
2276                 else if (sample_type & PERF_SAMPLE_BRANCH_STACK)
2277                         callchain_param.record_mode = CALLCHAIN_LBR;
2278                 else
2279                         callchain_param.record_mode = CALLCHAIN_FP;
2280         }
2281 }
2282
2283 static int process_stat_round_event(struct perf_tool *tool __maybe_unused,
2284                                     union perf_event *event,
2285                                     struct perf_session *session)
2286 {
2287         struct stat_round_event *round = &event->stat_round;
2288         struct perf_evsel *counter;
2289
2290         evlist__for_each_entry(session->evlist, counter) {
2291                 perf_stat_process_counter(&stat_config, counter);
2292                 process_stat(counter, round->time);
2293         }
2294
2295         process_stat_interval(round->time);
2296         return 0;
2297 }
2298
2299 static int process_stat_config_event(struct perf_tool *tool __maybe_unused,
2300                                      union perf_event *event,
2301                                      struct perf_session *session __maybe_unused)
2302 {
2303         perf_event__read_stat_config(&stat_config, &event->stat_config);
2304         return 0;
2305 }
2306
2307 static int set_maps(struct perf_script *script)
2308 {
2309         struct perf_evlist *evlist = script->session->evlist;
2310
2311         if (!script->cpus || !script->threads)
2312                 return 0;
2313
2314         if (WARN_ONCE(script->allocated, "stats double allocation\n"))
2315                 return -EINVAL;
2316
2317         perf_evlist__set_maps(evlist, script->cpus, script->threads);
2318
2319         if (perf_evlist__alloc_stats(evlist, true))
2320                 return -ENOMEM;
2321
2322         script->allocated = true;
2323         return 0;
2324 }
2325
2326 static
2327 int process_thread_map_event(struct perf_tool *tool,
2328                              union perf_event *event,
2329                              struct perf_session *session __maybe_unused)
2330 {
2331         struct perf_script *script = container_of(tool, struct perf_script, tool);
2332
2333         if (script->threads) {
2334                 pr_warning("Extra thread map event, ignoring.\n");
2335                 return 0;
2336         }
2337
2338         script->threads = thread_map__new_event(&event->thread_map);
2339         if (!script->threads)
2340                 return -ENOMEM;
2341
2342         return set_maps(script);
2343 }
2344
2345 static
2346 int process_cpu_map_event(struct perf_tool *tool __maybe_unused,
2347                           union perf_event *event,
2348                           struct perf_session *session __maybe_unused)
2349 {
2350         struct perf_script *script = container_of(tool, struct perf_script, tool);
2351
2352         if (script->cpus) {
2353                 pr_warning("Extra cpu map event, ignoring.\n");
2354                 return 0;
2355         }
2356
2357         script->cpus = cpu_map__new_data(&event->cpu_map.data);
2358         if (!script->cpus)
2359                 return -ENOMEM;
2360
2361         return set_maps(script);
2362 }
2363
2364 int cmd_script(int argc, const char **argv)
2365 {
2366         bool show_full_info = false;
2367         bool header = false;
2368         bool header_only = false;
2369         bool script_started = false;
2370         char *rec_script_path = NULL;
2371         char *rep_script_path = NULL;
2372         struct perf_session *session;
2373         struct itrace_synth_opts itrace_synth_opts = { .set = false, };
2374         char *script_path = NULL;
2375         const char **__argv;
2376         int i, j, err = 0;
2377         struct perf_script script = {
2378                 .tool = {
2379                         .sample          = process_sample_event,
2380                         .mmap            = perf_event__process_mmap,
2381                         .mmap2           = perf_event__process_mmap2,
2382                         .comm            = perf_event__process_comm,
2383                         .namespaces      = perf_event__process_namespaces,
2384                         .exit            = perf_event__process_exit,
2385                         .fork            = perf_event__process_fork,
2386                         .attr            = process_attr,
2387                         .event_update   = perf_event__process_event_update,
2388                         .tracing_data    = perf_event__process_tracing_data,
2389                         .build_id        = perf_event__process_build_id,
2390                         .id_index        = perf_event__process_id_index,
2391                         .auxtrace_info   = perf_event__process_auxtrace_info,
2392                         .auxtrace        = perf_event__process_auxtrace,
2393                         .auxtrace_error  = perf_event__process_auxtrace_error,
2394                         .stat            = perf_event__process_stat_event,
2395                         .stat_round      = process_stat_round_event,
2396                         .stat_config     = process_stat_config_event,
2397                         .thread_map      = process_thread_map_event,
2398                         .cpu_map         = process_cpu_map_event,
2399                         .ordered_events  = true,
2400                         .ordering_requires_timestamps = true,
2401                 },
2402         };
2403         struct perf_data_file file = {
2404                 .mode = PERF_DATA_MODE_READ,
2405         };
2406         const struct option options[] = {
2407         OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
2408                     "dump raw trace in ASCII"),
2409         OPT_INCR('v', "verbose", &verbose,
2410                  "be more verbose (show symbol address, etc)"),
2411         OPT_BOOLEAN('L', "Latency", &latency_format,
2412                     "show latency attributes (irqs/preemption disabled, etc)"),
2413         OPT_CALLBACK_NOOPT('l', "list", NULL, NULL, "list available scripts",
2414                            list_available_scripts),
2415         OPT_CALLBACK('s', "script", NULL, "name",
2416                      "script file name (lang:script name, script name, or *)",
2417                      parse_scriptname),
2418         OPT_STRING('g', "gen-script", &generate_script_lang, "lang",
2419                    "generate perf-script.xx script in specified language"),
2420         OPT_STRING('i', "input", &input_name, "file", "input file name"),
2421         OPT_BOOLEAN('d', "debug-mode", &debug_mode,
2422                    "do various checks like samples ordering and lost events"),
2423         OPT_BOOLEAN(0, "header", &header, "Show data header."),
2424         OPT_BOOLEAN(0, "header-only", &header_only, "Show only data header."),
2425         OPT_STRING('k', "vmlinux", &symbol_conf.vmlinux_name,
2426                    "file", "vmlinux pathname"),
2427         OPT_STRING(0, "kallsyms", &symbol_conf.kallsyms_name,
2428                    "file", "kallsyms pathname"),
2429         OPT_BOOLEAN('G', "hide-call-graph", &no_callchain,
2430                     "When printing symbols do not display call chain"),
2431         OPT_CALLBACK(0, "symfs", NULL, "directory",
2432                      "Look for files with symbols relative to this directory",
2433                      symbol__config_symfs),
2434         OPT_CALLBACK('F', "fields", NULL, "str",
2435                      "comma separated output fields prepend with 'type:'. "
2436                      "Valid types: hw,sw,trace,raw. "
2437                      "Fields: comm,tid,pid,time,cpu,event,trace,ip,sym,dso,"
2438                      "addr,symoff,period,iregs,brstack,brstacksym,flags,"
2439                      "bpf-output,callindent,insn,insnlen,brstackinsn",
2440                      parse_output_fields),
2441         OPT_BOOLEAN('a', "all-cpus", &system_wide,
2442                     "system-wide collection from all CPUs"),
2443         OPT_STRING('S', "symbols", &symbol_conf.sym_list_str, "symbol[,symbol...]",
2444                    "only consider these symbols"),
2445         OPT_STRING(0, "stop-bt", &symbol_conf.bt_stop_list_str, "symbol[,symbol...]",
2446                    "Stop display of callgraph at these symbols"),
2447         OPT_STRING('C', "cpu", &cpu_list, "cpu", "list of cpus to profile"),
2448         OPT_STRING('c', "comms", &symbol_conf.comm_list_str, "comm[,comm...]",
2449                    "only display events for these comms"),
2450         OPT_STRING(0, "pid", &symbol_conf.pid_list_str, "pid[,pid...]",
2451                    "only consider symbols in these pids"),
2452         OPT_STRING(0, "tid", &symbol_conf.tid_list_str, "tid[,tid...]",
2453                    "only consider symbols in these tids"),
2454         OPT_UINTEGER(0, "max-stack", &scripting_max_stack,
2455                      "Set the maximum stack depth when parsing the callchain, "
2456                      "anything beyond the specified depth will be ignored. "
2457                      "Default: kernel.perf_event_max_stack or " __stringify(PERF_MAX_STACK_DEPTH)),
2458         OPT_BOOLEAN('I', "show-info", &show_full_info,
2459                     "display extended information from perf.data file"),
2460         OPT_BOOLEAN('\0', "show-kernel-path", &symbol_conf.show_kernel_path,
2461                     "Show the path of [kernel.kallsyms]"),
2462         OPT_BOOLEAN('\0', "show-task-events", &script.show_task_events,
2463                     "Show the fork/comm/exit events"),
2464         OPT_BOOLEAN('\0', "show-mmap-events", &script.show_mmap_events,
2465                     "Show the mmap events"),
2466         OPT_BOOLEAN('\0', "show-switch-events", &script.show_switch_events,
2467                     "Show context switch events (if recorded)"),
2468         OPT_BOOLEAN('\0', "show-namespace-events", &script.show_namespace_events,
2469                     "Show namespace events (if recorded)"),
2470         OPT_BOOLEAN('f', "force", &symbol_conf.force, "don't complain, do it"),
2471         OPT_INTEGER(0, "max-blocks", &max_blocks,
2472                     "Maximum number of code blocks to dump with brstackinsn"),
2473         OPT_BOOLEAN(0, "ns", &nanosecs,
2474                     "Use 9 decimal places when displaying time"),
2475         OPT_CALLBACK_OPTARG(0, "itrace", &itrace_synth_opts, NULL, "opts",
2476                             "Instruction Tracing options",
2477                             itrace_parse_synth_opts),
2478         OPT_BOOLEAN(0, "full-source-path", &srcline_full_filename,
2479                         "Show full source file name path for source lines"),
2480         OPT_BOOLEAN(0, "demangle", &symbol_conf.demangle,
2481                         "Enable symbol demangling"),
2482         OPT_BOOLEAN(0, "demangle-kernel", &symbol_conf.demangle_kernel,
2483                         "Enable kernel symbol demangling"),
2484         OPT_STRING(0, "time", &script.time_str, "str",
2485                    "Time span of interest (start,stop)"),
2486         OPT_END()
2487         };
2488         const char * const script_subcommands[] = { "record", "report", NULL };
2489         const char *script_usage[] = {
2490                 "perf script [<options>]",
2491                 "perf script [<options>] record <script> [<record-options>] <command>",
2492                 "perf script [<options>] report <script> [script-args]",
2493                 "perf script [<options>] <script> [<record-options>] <command>",
2494                 "perf script [<options>] <top-script> [script-args]",
2495                 NULL
2496         };
2497
2498         setup_scripting();
2499
2500         argc = parse_options_subcommand(argc, argv, options, script_subcommands, script_usage,
2501                              PARSE_OPT_STOP_AT_NON_OPTION);
2502
2503         file.path = input_name;
2504         file.force = symbol_conf.force;
2505
2506         if (argc > 1 && !strncmp(argv[0], "rec", strlen("rec"))) {
2507                 rec_script_path = get_script_path(argv[1], RECORD_SUFFIX);
2508                 if (!rec_script_path)
2509                         return cmd_record(argc, argv);
2510         }
2511
2512         if (argc > 1 && !strncmp(argv[0], "rep", strlen("rep"))) {
2513                 rep_script_path = get_script_path(argv[1], REPORT_SUFFIX);
2514                 if (!rep_script_path) {
2515                         fprintf(stderr,
2516                                 "Please specify a valid report script"
2517                                 "(see 'perf script -l' for listing)\n");
2518                         return -1;
2519                 }
2520         }
2521
2522         if (itrace_synth_opts.callchain &&
2523             itrace_synth_opts.callchain_sz > scripting_max_stack)
2524                 scripting_max_stack = itrace_synth_opts.callchain_sz;
2525
2526         /* make sure PERF_EXEC_PATH is set for scripts */
2527         set_argv_exec_path(get_argv_exec_path());
2528
2529         if (argc && !script_name && !rec_script_path && !rep_script_path) {
2530                 int live_pipe[2];
2531                 int rep_args;
2532                 pid_t pid;
2533
2534                 rec_script_path = get_script_path(argv[0], RECORD_SUFFIX);
2535                 rep_script_path = get_script_path(argv[0], REPORT_SUFFIX);
2536
2537                 if (!rec_script_path && !rep_script_path) {
2538                         usage_with_options_msg(script_usage, options,
2539                                 "Couldn't find script `%s'\n\n See perf"
2540                                 " script -l for available scripts.\n", argv[0]);
2541                 }
2542
2543                 if (is_top_script(argv[0])) {
2544                         rep_args = argc - 1;
2545                 } else {
2546                         int rec_args;
2547
2548                         rep_args = has_required_arg(rep_script_path);
2549                         rec_args = (argc - 1) - rep_args;
2550                         if (rec_args < 0) {
2551                                 usage_with_options_msg(script_usage, options,
2552                                         "`%s' script requires options."
2553                                         "\n\n See perf script -l for available "
2554                                         "scripts and options.\n", argv[0]);
2555                         }
2556                 }
2557
2558                 if (pipe(live_pipe) < 0) {
2559                         perror("failed to create pipe");
2560                         return -1;
2561                 }
2562
2563                 pid = fork();
2564                 if (pid < 0) {
2565                         perror("failed to fork");
2566                         return -1;
2567                 }
2568
2569                 if (!pid) {
2570                         j = 0;
2571
2572                         dup2(live_pipe[1], 1);
2573                         close(live_pipe[0]);
2574
2575                         if (is_top_script(argv[0])) {
2576                                 system_wide = true;
2577                         } else if (!system_wide) {
2578                                 if (have_cmd(argc - rep_args, &argv[rep_args]) != 0) {
2579                                         err = -1;
2580                                         goto out;
2581                                 }
2582                         }
2583
2584                         __argv = malloc((argc + 6) * sizeof(const char *));
2585                         if (!__argv) {
2586                                 pr_err("malloc failed\n");
2587                                 err = -ENOMEM;
2588                                 goto out;
2589                         }
2590
2591                         __argv[j++] = "/bin/sh";
2592                         __argv[j++] = rec_script_path;
2593                         if (system_wide)
2594                                 __argv[j++] = "-a";
2595                         __argv[j++] = "-q";
2596                         __argv[j++] = "-o";
2597                         __argv[j++] = "-";
2598                         for (i = rep_args + 1; i < argc; i++)
2599                                 __argv[j++] = argv[i];
2600                         __argv[j++] = NULL;
2601
2602                         execvp("/bin/sh", (char **)__argv);
2603                         free(__argv);
2604                         exit(-1);
2605                 }
2606
2607                 dup2(live_pipe[0], 0);
2608                 close(live_pipe[1]);
2609
2610                 __argv = malloc((argc + 4) * sizeof(const char *));
2611                 if (!__argv) {
2612                         pr_err("malloc failed\n");
2613                         err = -ENOMEM;
2614                         goto out;
2615                 }
2616
2617                 j = 0;
2618                 __argv[j++] = "/bin/sh";
2619                 __argv[j++] = rep_script_path;
2620                 for (i = 1; i < rep_args + 1; i++)
2621                         __argv[j++] = argv[i];
2622                 __argv[j++] = "-i";
2623                 __argv[j++] = "-";
2624                 __argv[j++] = NULL;
2625
2626                 execvp("/bin/sh", (char **)__argv);
2627                 free(__argv);
2628                 exit(-1);
2629         }
2630
2631         if (rec_script_path)
2632                 script_path = rec_script_path;
2633         if (rep_script_path)
2634                 script_path = rep_script_path;
2635
2636         if (script_path) {
2637                 j = 0;
2638
2639                 if (!rec_script_path)
2640                         system_wide = false;
2641                 else if (!system_wide) {
2642                         if (have_cmd(argc - 1, &argv[1]) != 0) {
2643                                 err = -1;
2644                                 goto out;
2645                         }
2646                 }
2647
2648                 __argv = malloc((argc + 2) * sizeof(const char *));
2649                 if (!__argv) {
2650                         pr_err("malloc failed\n");
2651                         err = -ENOMEM;
2652                         goto out;
2653                 }
2654
2655                 __argv[j++] = "/bin/sh";
2656                 __argv[j++] = script_path;
2657                 if (system_wide)
2658                         __argv[j++] = "-a";
2659                 for (i = 2; i < argc; i++)
2660                         __argv[j++] = argv[i];
2661                 __argv[j++] = NULL;
2662
2663                 execvp("/bin/sh", (char **)__argv);
2664                 free(__argv);
2665                 exit(-1);
2666         }
2667
2668         if (!script_name)
2669                 setup_pager();
2670
2671         session = perf_session__new(&file, false, &script.tool);
2672         if (session == NULL)
2673                 return -1;
2674
2675         if (header || header_only) {
2676                 perf_session__fprintf_info(session, stdout, show_full_info);
2677                 if (header_only)
2678                         goto out_delete;
2679         }
2680
2681         if (symbol__init(&session->header.env) < 0)
2682                 goto out_delete;
2683
2684         script.session = session;
2685         script__setup_sample_type(&script);
2686
2687         if (output[PERF_TYPE_HARDWARE].fields & PERF_OUTPUT_CALLINDENT)
2688                 itrace_synth_opts.thread_stack = true;
2689
2690         session->itrace_synth_opts = &itrace_synth_opts;
2691
2692         if (cpu_list) {
2693                 err = perf_session__cpu_bitmap(session, cpu_list, cpu_bitmap);
2694                 if (err < 0)
2695                         goto out_delete;
2696         }
2697
2698         if (!no_callchain)
2699                 symbol_conf.use_callchain = true;
2700         else
2701                 symbol_conf.use_callchain = false;
2702
2703         if (session->tevent.pevent &&
2704             pevent_set_function_resolver(session->tevent.pevent,
2705                                          machine__resolve_kernel_addr,
2706                                          &session->machines.host) < 0) {
2707                 pr_err("%s: failed to set libtraceevent function resolver\n", __func__);
2708                 return -1;
2709         }
2710
2711         if (generate_script_lang) {
2712                 struct stat perf_stat;
2713                 int input;
2714
2715                 if (output_set_by_user()) {
2716                         fprintf(stderr,
2717                                 "custom fields not supported for generated scripts");
2718                         err = -EINVAL;
2719                         goto out_delete;
2720                 }
2721
2722                 input = open(file.path, O_RDONLY);      /* input_name */
2723                 if (input < 0) {
2724                         err = -errno;
2725                         perror("failed to open file");
2726                         goto out_delete;
2727                 }
2728
2729                 err = fstat(input, &perf_stat);
2730                 if (err < 0) {
2731                         perror("failed to stat file");
2732                         goto out_delete;
2733                 }
2734
2735                 if (!perf_stat.st_size) {
2736                         fprintf(stderr, "zero-sized file, nothing to do!\n");
2737                         goto out_delete;
2738                 }
2739
2740                 scripting_ops = script_spec__lookup(generate_script_lang);
2741                 if (!scripting_ops) {
2742                         fprintf(stderr, "invalid language specifier");
2743                         err = -ENOENT;
2744                         goto out_delete;
2745                 }
2746
2747                 err = scripting_ops->generate_script(session->tevent.pevent,
2748                                                      "perf-script");
2749                 goto out_delete;
2750         }
2751
2752         if (script_name) {
2753                 err = scripting_ops->start_script(script_name, argc, argv);
2754                 if (err)
2755                         goto out_delete;
2756                 pr_debug("perf script started with script %s\n\n", script_name);
2757                 script_started = true;
2758         }
2759
2760
2761         err = perf_session__check_output_opt(session);
2762         if (err < 0)
2763                 goto out_delete;
2764
2765         /* needs to be parsed after looking up reference time */
2766         if (perf_time__parse_str(&script.ptime, script.time_str) != 0) {
2767                 pr_err("Invalid time string\n");
2768                 return -EINVAL;
2769         }
2770
2771         err = __cmd_script(&script);
2772
2773         flush_scripting();
2774
2775 out_delete:
2776         perf_evlist__free_stats(session->evlist);
2777         perf_session__delete(session);
2778
2779         if (script_started)
2780                 cleanup_scripting();
2781 out:
2782         return err;
2783 }