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 "util/exec_cmd.h"
   7 #include "util/header.h"
   8 #include "util/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 <linux/bitmap.h>
  22
  23 static char const               *script_name;
  24 static char const               *generate_script_lang;
  25 static bool                     debug_mode;
  26 static u64                      last_timestamp;
  27 static u64                      nr_unordered;
  28 static bool                     no_callchain;
  29 static bool                     latency_format;
  30 static bool                     system_wide;
  31 static bool                     print_flags;
  32 static bool                     nanosecs;
  33 static const char               *cpu_list;
  34 static DECLARE_BITMAP(cpu_bitmap, MAX_NR_CPUS);
  35
  36 unsigned int scripting_max_stack = PERF_MAX_STACK_DEPTH;
  37
  38 enum perf_output_field {
  39         PERF_OUTPUT_COMM            = 1U << 0,
  40         PERF_OUTPUT_TID             = 1U << 1,
  41         PERF_OUTPUT_PID             = 1U << 2,
  42         PERF_OUTPUT_TIME            = 1U << 3,
  43         PERF_OUTPUT_CPU             = 1U << 4,
  44         PERF_OUTPUT_EVNAME          = 1U << 5,
  45         PERF_OUTPUT_TRACE           = 1U << 6,
  46         PERF_OUTPUT_IP              = 1U << 7,
  47         PERF_OUTPUT_SYM             = 1U << 8,
  48         PERF_OUTPUT_DSO             = 1U << 9,
  49         PERF_OUTPUT_ADDR            = 1U << 10,
  50         PERF_OUTPUT_SYMOFFSET       = 1U << 11,
  51         PERF_OUTPUT_SRCLINE         = 1U << 12,
  52         PERF_OUTPUT_PERIOD          = 1U << 13,
  53         PERF_OUTPUT_IREGS           = 1U << 14,
  54         PERF_OUTPUT_BRSTACK         = 1U << 15,
  55         PERF_OUTPUT_BRSTACKSYM      = 1U << 16,
  56 };
  57
  58 struct output_option {
  59         const char *str;
  60         enum perf_output_field field;
  61 } all_output_options[] = {
  62         {.str = "comm",  .field = PERF_OUTPUT_COMM},
  63         {.str = "tid",   .field = PERF_OUTPUT_TID},
  64         {.str = "pid",   .field = PERF_OUTPUT_PID},
  65         {.str = "time",  .field = PERF_OUTPUT_TIME},
  66         {.str = "cpu",   .field = PERF_OUTPUT_CPU},
  67         {.str = "event", .field = PERF_OUTPUT_EVNAME},
  68         {.str = "trace", .field = PERF_OUTPUT_TRACE},
  69         {.str = "ip",    .field = PERF_OUTPUT_IP},
  70         {.str = "sym",   .field = PERF_OUTPUT_SYM},
  71         {.str = "dso",   .field = PERF_OUTPUT_DSO},
  72         {.str = "addr",  .field = PERF_OUTPUT_ADDR},
  73         {.str = "symoff", .field = PERF_OUTPUT_SYMOFFSET},
  74         {.str = "srcline", .field = PERF_OUTPUT_SRCLINE},
  75         {.str = "period", .field = PERF_OUTPUT_PERIOD},
  76         {.str = "iregs", .field = PERF_OUTPUT_IREGS},
  77         {.str = "brstack", .field = PERF_OUTPUT_BRSTACK},
  78         {.str = "brstacksym", .field = PERF_OUTPUT_BRSTACKSYM},
  79 };
  80
  81 /* default set to maintain compatibility with current format */
  82 static struct {
  83         bool user_set;
  84         bool wildcard_set;
  85         unsigned int print_ip_opts;
  86         u64 fields;
  87         u64 invalid_fields;
  88 } output[PERF_TYPE_MAX] = {
  89
  90         [PERF_TYPE_HARDWARE] = {
  91                 .user_set = false,
  92
  93                 .fields = PERF_OUTPUT_COMM | PERF_OUTPUT_TID |
  94                               PERF_OUTPUT_CPU | PERF_OUTPUT_TIME |
  95                               PERF_OUTPUT_EVNAME | PERF_OUTPUT_ADDR |
  96                               PERF_OUTPUT_IP |
  97                               PERF_OUTPUT_SYM | PERF_OUTPUT_DSO |
  98                               PERF_OUTPUT_PERIOD,
  99
 100                 .invalid_fields = PERF_OUTPUT_TRACE,
 101         },
 102
 103         [PERF_TYPE_SOFTWARE] = {
 104                 .user_set = false,
 105
 106                 .fields = PERF_OUTPUT_COMM | PERF_OUTPUT_TID |
 107                               PERF_OUTPUT_CPU | PERF_OUTPUT_TIME |
 108                               PERF_OUTPUT_EVNAME | PERF_OUTPUT_IP |
 109                               PERF_OUTPUT_SYM | PERF_OUTPUT_DSO |
 110                               PERF_OUTPUT_PERIOD,
 111
 112                 .invalid_fields = PERF_OUTPUT_TRACE,
 113         },
 114
 115         [PERF_TYPE_TRACEPOINT] = {
 116                 .user_set = false,
 117
 118                 .fields = PERF_OUTPUT_COMM | PERF_OUTPUT_TID |
 119                                   PERF_OUTPUT_CPU | PERF_OUTPUT_TIME |
 120                                   PERF_OUTPUT_EVNAME | PERF_OUTPUT_TRACE,
 121         },
 122
 123         [PERF_TYPE_RAW] = {
 124                 .user_set = false,
 125
 126                 .fields = PERF_OUTPUT_COMM | PERF_OUTPUT_TID |
 127                               PERF_OUTPUT_CPU | PERF_OUTPUT_TIME |
 128                               PERF_OUTPUT_EVNAME | PERF_OUTPUT_IP |
 129                               PERF_OUTPUT_SYM | PERF_OUTPUT_DSO |
 130                               PERF_OUTPUT_PERIOD,
 131
 132                 .invalid_fields = PERF_OUTPUT_TRACE,
 133         },
 134 };
 135
 136 static bool output_set_by_user(void)
 137 {
 138         int j;
 139         for (j = 0; j < PERF_TYPE_MAX; ++j) {
 140                 if (output[j].user_set)
 141                         return true;
 142         }
 143         return false;
 144 }
 145
 146 static const char *output_field2str(enum perf_output_field field)
 147 {
 148         int i, imax = ARRAY_SIZE(all_output_options);
 149         const char *str = "";
 150
 151         for (i = 0; i < imax; ++i) {
 152                 if (all_output_options[i].field == field) {
 153                         str = all_output_options[i].str;
 154                         break;
 155                 }
 156         }
 157         return str;
 158 }
 159
 160 #define PRINT_FIELD(x)  (output[attr->type].fields & PERF_OUTPUT_##x)
 161
 162 static int perf_evsel__do_check_stype(struct perf_evsel *evsel,
 163                                       u64 sample_type, const char *sample_msg,
 164                                       enum perf_output_field field,
 165                                       bool allow_user_set)
 166 {
 167         struct perf_event_attr *attr = &evsel->attr;
 168         int type = attr->type;
 169         const char *evname;
 170
 171         if (attr->sample_type & sample_type)
 172                 return 0;
 173
 174         if (output[type].user_set) {
 175                 if (allow_user_set)
 176                         return 0;
 177                 evname = perf_evsel__name(evsel);
 178                 pr_err("Samples for '%s' event do not have %s attribute set. "
 179                        "Cannot print '%s' field.\n",
 180                        evname, sample_msg, output_field2str(field));
 181                 return -1;
 182         }
 183
 184         /* user did not ask for it explicitly so remove from the default list */
 185         output[type].fields &= ~field;
 186         evname = perf_evsel__name(evsel);
 187         pr_debug("Samples for '%s' event do not have %s attribute set. "
 188                  "Skipping '%s' field.\n",
 189                  evname, sample_msg, output_field2str(field));
 190
 191         return 0;
 192 }
 193
 194 static int perf_evsel__check_stype(struct perf_evsel *evsel,
 195                                    u64 sample_type, const char *sample_msg,
 196                                    enum perf_output_field field)
 197 {
 198         return perf_evsel__do_check_stype(evsel, sample_type, sample_msg, field,
 199                                           false);
 200 }
 201
 202 static int perf_evsel__check_attr(struct perf_evsel *evsel,
 203                                   struct perf_session *session)
 204 {
 205         struct perf_event_attr *attr = &evsel->attr;
 206         bool allow_user_set;
 207
 208         allow_user_set = perf_header__has_feat(&session->header,
 209                                                HEADER_AUXTRACE);
 210
 211         if (PRINT_FIELD(TRACE) &&
 212                 !perf_session__has_traces(session, "record -R"))
 213                 return -EINVAL;
 214
 215         if (PRINT_FIELD(IP)) {
 216                 if (perf_evsel__check_stype(evsel, PERF_SAMPLE_IP, "IP",
 217                                             PERF_OUTPUT_IP))
 218                         return -EINVAL;
 219         }
 220
 221         if (PRINT_FIELD(ADDR) &&
 222                 perf_evsel__do_check_stype(evsel, PERF_SAMPLE_ADDR, "ADDR",
 223                                            PERF_OUTPUT_ADDR, allow_user_set))
 224                 return -EINVAL;
 225
 226         if (PRINT_FIELD(SYM) && !PRINT_FIELD(IP) && !PRINT_FIELD(ADDR)) {
 227                 pr_err("Display of symbols requested but neither sample IP nor "
 228                            "sample address\nis selected. Hence, no addresses to convert "
 229                        "to symbols.\n");
 230                 return -EINVAL;
 231         }
 232         if (PRINT_FIELD(SYMOFFSET) && !PRINT_FIELD(SYM)) {
 233                 pr_err("Display of offsets requested but symbol is not"
 234                        "selected.\n");
 235                 return -EINVAL;
 236         }
 237         if (PRINT_FIELD(DSO) && !PRINT_FIELD(IP) && !PRINT_FIELD(ADDR)) {
 238                 pr_err("Display of DSO requested but neither sample IP nor "
 239                            "sample address\nis selected. Hence, no addresses to convert "
 240                        "to DSO.\n");
 241                 return -EINVAL;
 242         }
 243         if (PRINT_FIELD(SRCLINE) && !PRINT_FIELD(IP)) {
 244                 pr_err("Display of source line number requested but sample IP is not\n"
 245                        "selected. Hence, no address to lookup the source line number.\n");
 246                 return -EINVAL;
 247         }
 248
 249         if ((PRINT_FIELD(PID) || PRINT_FIELD(TID)) &&
 250                 perf_evsel__check_stype(evsel, PERF_SAMPLE_TID, "TID",
 251                                         PERF_OUTPUT_TID|PERF_OUTPUT_PID))
 252                 return -EINVAL;
 253
 254         if (PRINT_FIELD(TIME) &&
 255                 perf_evsel__check_stype(evsel, PERF_SAMPLE_TIME, "TIME",
 256                                         PERF_OUTPUT_TIME))
 257                 return -EINVAL;
 258
 259         if (PRINT_FIELD(CPU) &&
 260                 perf_evsel__do_check_stype(evsel, PERF_SAMPLE_CPU, "CPU",
 261                                            PERF_OUTPUT_CPU, allow_user_set))
 262                 return -EINVAL;
 263
 264         if (PRINT_FIELD(PERIOD) &&
 265                 perf_evsel__check_stype(evsel, PERF_SAMPLE_PERIOD, "PERIOD",
 266                                         PERF_OUTPUT_PERIOD))
 267                 return -EINVAL;
 268
 269         if (PRINT_FIELD(IREGS) &&
 270                 perf_evsel__check_stype(evsel, PERF_SAMPLE_REGS_INTR, "IREGS",
 271                                         PERF_OUTPUT_IREGS))
 272                 return -EINVAL;
 273
 274         return 0;
 275 }
 276
 277 static void set_print_ip_opts(struct perf_event_attr *attr)
 278 {
 279         unsigned int type = attr->type;
 280
 281         output[type].print_ip_opts = 0;
 282         if (PRINT_FIELD(IP))
 283                 output[type].print_ip_opts |= PRINT_IP_OPT_IP;
 284
 285         if (PRINT_FIELD(SYM))
 286                 output[type].print_ip_opts |= PRINT_IP_OPT_SYM;
 287
 288         if (PRINT_FIELD(DSO))
 289                 output[type].print_ip_opts |= PRINT_IP_OPT_DSO;
 290
 291         if (PRINT_FIELD(SYMOFFSET))
 292                 output[type].print_ip_opts |= PRINT_IP_OPT_SYMOFFSET;
 293
 294         if (PRINT_FIELD(SRCLINE))
 295                 output[type].print_ip_opts |= PRINT_IP_OPT_SRCLINE;
 296 }
 297
 298 /*
 299  * verify all user requested events exist and the samples
 300  * have the expected data
 301  */
 302 static int perf_session__check_output_opt(struct perf_session *session)
 303 {
 304         int j;
 305         struct perf_evsel *evsel;
 306
 307         for (j = 0; j < PERF_TYPE_MAX; ++j) {
 308                 evsel = perf_session__find_first_evtype(session, j);
 309
 310                 /*
 311                  * even if fields is set to 0 (ie., show nothing) event must
 312                  * exist if user explicitly includes it on the command line
 313                  */
 314                 if (!evsel && output[j].user_set && !output[j].wildcard_set) {
 315                         pr_err("%s events do not exist. "
 316                                "Remove corresponding -f option to proceed.\n",
 317                                event_type(j));
 318                         return -1;
 319                 }
 320
 321                 if (evsel && output[j].fields &&
 322                         perf_evsel__check_attr(evsel, session))
 323                         return -1;
 324
 325                 if (evsel == NULL)
 326                         continue;
 327
 328                 set_print_ip_opts(&evsel->attr);
 329         }
 330
 331         if (!no_callchain) {
 332                 bool use_callchain = false;
 333
 334                 evlist__for_each(session->evlist, evsel) {
 335                         if (evsel->attr.sample_type & PERF_SAMPLE_CALLCHAIN) {
 336                                 use_callchain = true;
 337                                 break;
 338                         }
 339                 }
 340                 if (!use_callchain)
 341                         symbol_conf.use_callchain = false;
 342         }
 343
 344         /*
 345          * set default for tracepoints to print symbols only
 346          * if callchains are present
 347          */
 348         if (symbol_conf.use_callchain &&
 349             !output[PERF_TYPE_TRACEPOINT].user_set) {
 350                 struct perf_event_attr *attr;
 351
 352                 j = PERF_TYPE_TRACEPOINT;
 353                 evsel = perf_session__find_first_evtype(session, j);
 354                 if (evsel == NULL)
 355                         goto out;
 356
 357                 attr = &evsel->attr;
 358
 359                 if (attr->sample_type & PERF_SAMPLE_CALLCHAIN) {
 360                         output[j].fields |= PERF_OUTPUT_IP;
 361                         output[j].fields |= PERF_OUTPUT_SYM;
 362                         output[j].fields |= PERF_OUTPUT_DSO;
 363                         set_print_ip_opts(attr);
 364                 }
 365         }
 366
 367 out:
 368         return 0;
 369 }
 370
 371 static void print_sample_iregs(union perf_event *event __maybe_unused,
 372                           struct perf_sample *sample,
 373                           struct thread *thread __maybe_unused,
 374                           struct perf_event_attr *attr)
 375 {
 376         struct regs_dump *regs = &sample->intr_regs;
 377         uint64_t mask = attr->sample_regs_intr;
 378         unsigned i = 0, r;
 379
 380         if (!regs)
 381                 return;
 382
 383         for_each_set_bit(r, (unsigned long *) &mask, sizeof(mask) * 8) {
 384                 u64 val = regs->regs[i++];
 385                 printf("%5s:0x%"PRIx64" ", perf_reg_name(r), val);
 386         }
 387 }
 388
 389 static void print_sample_start(struct perf_sample *sample,
 390                                struct thread *thread,
 391                                struct perf_evsel *evsel)
 392 {
 393         struct perf_event_attr *attr = &evsel->attr;
 394         unsigned long secs;
 395         unsigned long usecs;
 396         unsigned long long nsecs;
 397
 398         if (PRINT_FIELD(COMM)) {
 399                 if (latency_format)
 400                         printf("%8.8s ", thread__comm_str(thread));
 401                 else if (PRINT_FIELD(IP) && symbol_conf.use_callchain)
 402                         printf("%s ", thread__comm_str(thread));
 403                 else
 404                         printf("%16s ", thread__comm_str(thread));
 405         }
 406
 407         if (PRINT_FIELD(PID) && PRINT_FIELD(TID))
 408                 printf("%5d/%-5d ", sample->pid, sample->tid);
 409         else if (PRINT_FIELD(PID))
 410                 printf("%5d ", sample->pid);
 411         else if (PRINT_FIELD(TID))
 412                 printf("%5d ", sample->tid);
 413
 414         if (PRINT_FIELD(CPU)) {
 415                 if (latency_format)
 416                         printf("%3d ", sample->cpu);
 417                 else
 418                         printf("[%03d] ", sample->cpu);
 419         }
 420
 421         if (PRINT_FIELD(TIME)) {
 422                 nsecs = sample->time;
 423                 secs = nsecs / NSECS_PER_SEC;
 424                 nsecs -= secs * NSECS_PER_SEC;
 425                 usecs = nsecs / NSECS_PER_USEC;
 426                 if (nanosecs)
 427                         printf("%5lu.%09llu: ", secs, nsecs);
 428                 else
 429                         printf("%5lu.%06lu: ", secs, usecs);
 430         }
 431 }
 432
 433 static inline char
 434 mispred_str(struct branch_entry *br)
 435 {
 436         if (!(br->flags.mispred  || br->flags.predicted))
 437                 return '-';
 438
 439         return br->flags.predicted ? 'P' : 'M';
 440 }
 441
 442 static void print_sample_brstack(union perf_event *event __maybe_unused,
 443                           struct perf_sample *sample,
 444                           struct thread *thread __maybe_unused,
 445                           struct perf_event_attr *attr __maybe_unused)
 446 {
 447         struct branch_stack *br = sample->branch_stack;
 448         u64 i;
 449
 450         if (!(br && br->nr))
 451                 return;
 452
 453         for (i = 0; i < br->nr; i++) {
 454                 printf(" 0x%"PRIx64"/0x%"PRIx64"/%c/%c/%c/%d ",
 455                         br->entries[i].from,
 456                         br->entries[i].to,
 457                         mispred_str( br->entries + i),
 458                         br->entries[i].flags.in_tx? 'X' : '-',
 459                         br->entries[i].flags.abort? 'A' : '-',
 460                         br->entries[i].flags.cycles);
 461         }
 462 }
 463
 464 static void print_sample_brstacksym(union perf_event *event __maybe_unused,
 465                           struct perf_sample *sample,
 466                           struct thread *thread __maybe_unused,
 467                           struct perf_event_attr *attr __maybe_unused)
 468 {
 469         struct branch_stack *br = sample->branch_stack;
 470         struct addr_location alf, alt;
 471         u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
 472         u64 i, from, to;
 473
 474         if (!(br && br->nr))
 475                 return;
 476
 477         for (i = 0; i < br->nr; i++) {
 478
 479                 memset(&alf, 0, sizeof(alf));
 480                 memset(&alt, 0, sizeof(alt));
 481                 from = br->entries[i].from;
 482                 to   = br->entries[i].to;
 483
 484                 thread__find_addr_map(thread, cpumode, MAP__FUNCTION, from, &alf);
 485                 if (alf.map)
 486                         alf.sym = map__find_symbol(alf.map, alf.addr, NULL);
 487
 488                 thread__find_addr_map(thread, cpumode, MAP__FUNCTION, to, &alt);
 489                 if (alt.map)
 490                         alt.sym = map__find_symbol(alt.map, alt.addr, NULL);
 491
 492                 symbol__fprintf_symname_offs(alf.sym, &alf, stdout);
 493                 putchar('/');
 494                 symbol__fprintf_symname_offs(alt.sym, &alt, stdout);
 495                 printf("/%c/%c/%c/%d ",
 496                         mispred_str( br->entries + i),
 497                         br->entries[i].flags.in_tx? 'X' : '-',
 498                         br->entries[i].flags.abort? 'A' : '-',
 499                         br->entries[i].flags.cycles);
 500         }
 501 }
 502
 503
 504 static void print_sample_addr(union perf_event *event,
 505                           struct perf_sample *sample,
 506                           struct thread *thread,
 507                           struct perf_event_attr *attr)
 508 {
 509         struct addr_location al;
 510
 511         printf("%16" PRIx64, sample->addr);
 512
 513         if (!sample_addr_correlates_sym(attr))
 514                 return;
 515
 516         perf_event__preprocess_sample_addr(event, sample, thread, &al);
 517
 518         if (PRINT_FIELD(SYM)) {
 519                 printf(" ");
 520                 if (PRINT_FIELD(SYMOFFSET))
 521                         symbol__fprintf_symname_offs(al.sym, &al, stdout);
 522                 else
 523                         symbol__fprintf_symname(al.sym, stdout);
 524         }
 525
 526         if (PRINT_FIELD(DSO)) {
 527                 printf(" (");
 528                 map__fprintf_dsoname(al.map, stdout);
 529                 printf(")");
 530         }
 531 }
 532
 533 static void print_sample_bts(union perf_event *event,
 534                              struct perf_sample *sample,
 535                              struct perf_evsel *evsel,
 536                              struct thread *thread,
 537                              struct addr_location *al)
 538 {
 539         struct perf_event_attr *attr = &evsel->attr;
 540         bool print_srcline_last = false;
 541
 542         /* print branch_from information */
 543         if (PRINT_FIELD(IP)) {
 544                 unsigned int print_opts = output[attr->type].print_ip_opts;
 545
 546                 if (symbol_conf.use_callchain && sample->callchain) {
 547                         printf("\n");
 548                 } else {
 549                         printf(" ");
 550                         if (print_opts & PRINT_IP_OPT_SRCLINE) {
 551                                 print_srcline_last = true;
 552                                 print_opts &= ~PRINT_IP_OPT_SRCLINE;
 553                         }
 554                 }
 555                 perf_evsel__print_ip(evsel, sample, al, print_opts,
 556                                      scripting_max_stack);
 557         }
 558
 559         /* print branch_to information */
 560         if (PRINT_FIELD(ADDR) ||
 561             ((evsel->attr.sample_type & PERF_SAMPLE_ADDR) &&
 562              !output[attr->type].user_set)) {
 563                 printf(" => ");
 564                 print_sample_addr(event, sample, thread, attr);
 565         }
 566
 567         if (print_srcline_last)
 568                 map__fprintf_srcline(al->map, al->addr, "\n  ", stdout);
 569
 570         printf("\n");
 571 }
 572
 573 static void print_sample_flags(u32 flags)
 574 {
 575         const char *chars = PERF_IP_FLAG_CHARS;
 576         const int n = strlen(PERF_IP_FLAG_CHARS);
 577         char str[33];
 578         int i, pos = 0;
 579
 580         for (i = 0; i < n; i++, flags >>= 1) {
 581                 if (flags & 1)
 582                         str[pos++] = chars[i];
 583         }
 584         for (; i < 32; i++, flags >>= 1) {
 585                 if (flags & 1)
 586                         str[pos++] = '?';
 587         }
 588         str[pos] = 0;
 589         printf("  %-4s ", str);
 590 }
 591
 592 static void process_event(union perf_event *event, struct perf_sample *sample,
 593                           struct perf_evsel *evsel, struct addr_location *al)
 594 {
 595         struct thread *thread = al->thread;
 596         struct perf_event_attr *attr = &evsel->attr;
 597
 598         if (output[attr->type].fields == 0)
 599                 return;
 600
 601         print_sample_start(sample, thread, evsel);
 602
 603         if (PRINT_FIELD(PERIOD))
 604                 printf("%10" PRIu64 " ", sample->period);
 605
 606         if (PRINT_FIELD(EVNAME)) {
 607                 const char *evname = perf_evsel__name(evsel);
 608                 printf("%s: ", evname ? evname : "[unknown]");
 609         }
 610
 611         if (print_flags)
 612                 print_sample_flags(sample->flags);
 613
 614         if (is_bts_event(attr)) {
 615                 print_sample_bts(event, sample, evsel, thread, al);
 616                 return;
 617         }
 618
 619         if (PRINT_FIELD(TRACE))
 620                 event_format__print(evsel->tp_format, sample->cpu,
 621                                     sample->raw_data, sample->raw_size);
 622         if (PRINT_FIELD(ADDR))
 623                 print_sample_addr(event, sample, thread, attr);
 624
 625         if (PRINT_FIELD(IP)) {
 626                 if (!symbol_conf.use_callchain)
 627                         printf(" ");
 628                 else
 629                         printf("\n");
 630
 631                 perf_evsel__print_ip(evsel, sample, al,
 632                                      output[attr->type].print_ip_opts,
 633                                      scripting_max_stack);
 634         }
 635
 636         if (PRINT_FIELD(IREGS))
 637                 print_sample_iregs(event, sample, thread, attr);
 638
 639         if (PRINT_FIELD(BRSTACK))
 640                 print_sample_brstack(event, sample, thread, attr);
 641         else if (PRINT_FIELD(BRSTACKSYM))
 642                 print_sample_brstacksym(event, sample, thread, attr);
 643
 644         printf("\n");
 645 }
 646
 647 static int default_start_script(const char *script __maybe_unused,
 648                                 int argc __maybe_unused,
 649                                 const char **argv __maybe_unused)
 650 {
 651         return 0;
 652 }
 653
 654 static int default_flush_script(void)
 655 {
 656         return 0;
 657 }
 658
 659 static int default_stop_script(void)
 660 {
 661         return 0;
 662 }
 663
 664 static int default_generate_script(struct pevent *pevent __maybe_unused,
 665                                    const char *outfile __maybe_unused)
 666 {
 667         return 0;
 668 }
 669
 670 static struct scripting_ops default_scripting_ops = {
 671         .start_script           = default_start_script,
 672         .flush_script           = default_flush_script,
 673         .stop_script            = default_stop_script,
 674         .process_event          = process_event,
 675         .generate_script        = default_generate_script,
 676 };
 677
 678 static struct scripting_ops     *scripting_ops;
 679
 680 static void setup_scripting(void)
 681 {
 682         setup_perl_scripting();
 683         setup_python_scripting();
 684
 685         scripting_ops = &default_scripting_ops;
 686 }
 687
 688 static int flush_scripting(void)
 689 {
 690         return scripting_ops->flush_script();
 691 }
 692
 693 static int cleanup_scripting(void)
 694 {
 695         pr_debug("\nperf script stopped\n");
 696
 697         return scripting_ops->stop_script();
 698 }
 699
 700 static int process_sample_event(struct perf_tool *tool __maybe_unused,
 701                                 union perf_event *event,
 702                                 struct perf_sample *sample,
 703                                 struct perf_evsel *evsel,
 704                                 struct machine *machine)
 705 {
 706         struct addr_location al;
 707
 708         if (debug_mode) {
 709                 if (sample->time < last_timestamp) {
 710                         pr_err("Samples misordered, previous: %" PRIu64
 711                                 " this: %" PRIu64 "\n", last_timestamp,
 712                                 sample->time);
 713                         nr_unordered++;
 714                 }
 715                 last_timestamp = sample->time;
 716                 return 0;
 717         }
 718
 719         if (perf_event__preprocess_sample(event, machine, &al, sample) < 0) {
 720                 pr_err("problem processing %d event, skipping it.\n",
 721                        event->header.type);
 722                 return -1;
 723         }
 724
 725         if (al.filtered)
 726                 goto out_put;
 727
 728         if (cpu_list && !test_bit(sample->cpu, cpu_bitmap))
 729                 goto out_put;
 730
 731         scripting_ops->process_event(event, sample, evsel, &al);
 732 out_put:
 733         addr_location__put(&al);
 734         return 0;
 735 }
 736
 737 struct perf_script {
 738         struct perf_tool        tool;
 739         struct perf_session     *session;
 740         bool                    show_task_events;
 741         bool                    show_mmap_events;
 742         bool                    show_switch_events;
 743 };
 744
 745 static int process_attr(struct perf_tool *tool, union perf_event *event,
 746                         struct perf_evlist **pevlist)
 747 {
 748         struct perf_script *scr = container_of(tool, struct perf_script, tool);
 749         struct perf_evlist *evlist;
 750         struct perf_evsel *evsel, *pos;
 751         int err;
 752
 753         err = perf_event__process_attr(tool, event, pevlist);
 754         if (err)
 755                 return err;
 756
 757         evlist = *pevlist;
 758         evsel = perf_evlist__last(*pevlist);
 759
 760         if (evsel->attr.type >= PERF_TYPE_MAX)
 761                 return 0;
 762
 763         evlist__for_each(evlist, pos) {
 764                 if (pos->attr.type == evsel->attr.type && pos != evsel)
 765                         return 0;
 766         }
 767
 768         set_print_ip_opts(&evsel->attr);
 769
 770         if (evsel->attr.sample_type)
 771                 err = perf_evsel__check_attr(evsel, scr->session);
 772
 773         return err;
 774 }
 775
 776 static int process_comm_event(struct perf_tool *tool,
 777                               union perf_event *event,
 778                               struct perf_sample *sample,
 779                               struct machine *machine)
 780 {
 781         struct thread *thread;
 782         struct perf_script *script = container_of(tool, struct perf_script, tool);
 783         struct perf_session *session = script->session;
 784         struct perf_evsel *evsel = perf_evlist__id2evsel(session->evlist, sample->id);
 785         int ret = -1;
 786
 787         thread = machine__findnew_thread(machine, event->comm.pid, event->comm.tid);
 788         if (thread == NULL) {
 789                 pr_debug("problem processing COMM event, skipping it.\n");
 790                 return -1;
 791         }
 792
 793         if (perf_event__process_comm(tool, event, sample, machine) < 0)
 794                 goto out;
 795
 796         if (!evsel->attr.sample_id_all) {
 797                 sample->cpu = 0;
 798                 sample->time = 0;
 799                 sample->tid = event->comm.tid;
 800                 sample->pid = event->comm.pid;
 801         }
 802         print_sample_start(sample, thread, evsel);
 803         perf_event__fprintf(event, stdout);
 804         ret = 0;
 805 out:
 806         thread__put(thread);
 807         return ret;
 808 }
 809
 810 static int process_fork_event(struct perf_tool *tool,
 811                               union perf_event *event,
 812                               struct perf_sample *sample,
 813                               struct machine *machine)
 814 {
 815         struct thread *thread;
 816         struct perf_script *script = container_of(tool, struct perf_script, tool);
 817         struct perf_session *session = script->session;
 818         struct perf_evsel *evsel = perf_evlist__id2evsel(session->evlist, sample->id);
 819
 820         if (perf_event__process_fork(tool, event, sample, machine) < 0)
 821                 return -1;
 822
 823         thread = machine__findnew_thread(machine, event->fork.pid, event->fork.tid);
 824         if (thread == NULL) {
 825                 pr_debug("problem processing FORK event, skipping it.\n");
 826                 return -1;
 827         }
 828
 829         if (!evsel->attr.sample_id_all) {
 830                 sample->cpu = 0;
 831                 sample->time = event->fork.time;
 832                 sample->tid = event->fork.tid;
 833                 sample->pid = event->fork.pid;
 834         }
 835         print_sample_start(sample, thread, evsel);
 836         perf_event__fprintf(event, stdout);
 837         thread__put(thread);
 838
 839         return 0;
 840 }
 841 static int process_exit_event(struct perf_tool *tool,
 842                               union perf_event *event,
 843                               struct perf_sample *sample,
 844                               struct machine *machine)
 845 {
 846         int err = 0;
 847         struct thread *thread;
 848         struct perf_script *script = container_of(tool, struct perf_script, tool);
 849         struct perf_session *session = script->session;
 850         struct perf_evsel *evsel = perf_evlist__id2evsel(session->evlist, sample->id);
 851
 852         thread = machine__findnew_thread(machine, event->fork.pid, event->fork.tid);
 853         if (thread == NULL) {
 854                 pr_debug("problem processing EXIT event, skipping it.\n");
 855                 return -1;
 856         }
 857
 858         if (!evsel->attr.sample_id_all) {
 859                 sample->cpu = 0;
 860                 sample->time = 0;
 861                 sample->tid = event->fork.tid;
 862                 sample->pid = event->fork.pid;
 863         }
 864         print_sample_start(sample, thread, evsel);
 865         perf_event__fprintf(event, stdout);
 866
 867         if (perf_event__process_exit(tool, event, sample, machine) < 0)
 868                 err = -1;
 869
 870         thread__put(thread);
 871         return err;
 872 }
 873
 874 static int process_mmap_event(struct perf_tool *tool,
 875                               union perf_event *event,
 876                               struct perf_sample *sample,
 877                               struct machine *machine)
 878 {
 879         struct thread *thread;
 880         struct perf_script *script = container_of(tool, struct perf_script, tool);
 881         struct perf_session *session = script->session;
 882         struct perf_evsel *evsel = perf_evlist__id2evsel(session->evlist, sample->id);
 883
 884         if (perf_event__process_mmap(tool, event, sample, machine) < 0)
 885                 return -1;
 886
 887         thread = machine__findnew_thread(machine, event->mmap.pid, event->mmap.tid);
 888         if (thread == NULL) {
 889                 pr_debug("problem processing MMAP event, skipping it.\n");
 890                 return -1;
 891         }
 892
 893         if (!evsel->attr.sample_id_all) {
 894                 sample->cpu = 0;
 895                 sample->time = 0;
 896                 sample->tid = event->mmap.tid;
 897                 sample->pid = event->mmap.pid;
 898         }
 899         print_sample_start(sample, thread, evsel);
 900         perf_event__fprintf(event, stdout);
 901         thread__put(thread);
 902         return 0;
 903 }
 904
 905 static int process_mmap2_event(struct perf_tool *tool,
 906                               union perf_event *event,
 907                               struct perf_sample *sample,
 908                               struct machine *machine)
 909 {
 910         struct thread *thread;
 911         struct perf_script *script = container_of(tool, struct perf_script, tool);
 912         struct perf_session *session = script->session;
 913         struct perf_evsel *evsel = perf_evlist__id2evsel(session->evlist, sample->id);
 914
 915         if (perf_event__process_mmap2(tool, event, sample, machine) < 0)
 916                 return -1;
 917
 918         thread = machine__findnew_thread(machine, event->mmap2.pid, event->mmap2.tid);
 919         if (thread == NULL) {
 920                 pr_debug("problem processing MMAP2 event, skipping it.\n");
 921                 return -1;
 922         }
 923
 924         if (!evsel->attr.sample_id_all) {
 925                 sample->cpu = 0;
 926                 sample->time = 0;
 927                 sample->tid = event->mmap2.tid;
 928                 sample->pid = event->mmap2.pid;
 929         }
 930         print_sample_start(sample, thread, evsel);
 931         perf_event__fprintf(event, stdout);
 932         thread__put(thread);
 933         return 0;
 934 }
 935
 936 static int process_switch_event(struct perf_tool *tool,
 937                                 union perf_event *event,
 938                                 struct perf_sample *sample,
 939                                 struct machine *machine)
 940 {
 941         struct thread *thread;
 942         struct perf_script *script = container_of(tool, struct perf_script, tool);
 943         struct perf_session *session = script->session;
 944         struct perf_evsel *evsel = perf_evlist__id2evsel(session->evlist, sample->id);
 945
 946         if (perf_event__process_switch(tool, event, sample, machine) < 0)
 947                 return -1;
 948
 949         thread = machine__findnew_thread(machine, sample->pid,
 950                                          sample->tid);
 951         if (thread == NULL) {
 952                 pr_debug("problem processing SWITCH event, skipping it.\n");
 953                 return -1;
 954         }
 955
 956         print_sample_start(sample, thread, evsel);
 957         perf_event__fprintf(event, stdout);
 958         thread__put(thread);
 959         return 0;
 960 }
 961
 962 static void sig_handler(int sig __maybe_unused)
 963 {
 964         session_done = 1;
 965 }
 966
 967 static int __cmd_script(struct perf_script *script)
 968 {
 969         int ret;
 970
 971         signal(SIGINT, sig_handler);
 972
 973         /* override event processing functions */
 974         if (script->show_task_events) {
 975                 script->tool.comm = process_comm_event;
 976                 script->tool.fork = process_fork_event;
 977                 script->tool.exit = process_exit_event;
 978         }
 979         if (script->show_mmap_events) {
 980                 script->tool.mmap = process_mmap_event;
 981                 script->tool.mmap2 = process_mmap2_event;
 982         }
 983         if (script->show_switch_events)
 984                 script->tool.context_switch = process_switch_event;
 985
 986         ret = perf_session__process_events(script->session);
 987
 988         if (debug_mode)
 989                 pr_err("Misordered timestamps: %" PRIu64 "\n", nr_unordered);
 990
 991         return ret;
 992 }
 993
 994 struct script_spec {
 995         struct list_head        node;
 996         struct scripting_ops    *ops;
 997         char                    spec[0];
 998 };
 999
1000 static LIST_HEAD(script_specs);
1001
1002 static struct script_spec *script_spec__new(const char *spec,
1003                                             struct scripting_ops *ops)
1004 {
1005         struct script_spec *s = malloc(sizeof(*s) + strlen(spec) + 1);
1006
1007         if (s != NULL) {
1008                 strcpy(s->spec, spec);
1009                 s->ops = ops;
1010         }
1011
1012         return s;
1013 }
1014
1015 static void script_spec__add(struct script_spec *s)
1016 {
1017         list_add_tail(&s->node, &script_specs);
1018 }
1019
1020 static struct script_spec *script_spec__find(const char *spec)
1021 {
1022         struct script_spec *s;
1023
1024         list_for_each_entry(s, &script_specs, node)
1025                 if (strcasecmp(s->spec, spec) == 0)
1026                         return s;
1027         return NULL;
1028 }
1029
1030 static struct script_spec *script_spec__findnew(const char *spec,
1031                                                 struct scripting_ops *ops)
1032 {
1033         struct script_spec *s = script_spec__find(spec);
1034
1035         if (s)
1036                 return s;
1037
1038         s = script_spec__new(spec, ops);
1039         if (!s)
1040                 return NULL;
1041
1042         script_spec__add(s);
1043
1044         return s;
1045 }
1046
1047 int script_spec_register(const char *spec, struct scripting_ops *ops)
1048 {
1049         struct script_spec *s;
1050
1051         s = script_spec__find(spec);
1052         if (s)
1053                 return -1;
1054
1055         s = script_spec__findnew(spec, ops);
1056         if (!s)
1057                 return -1;
1058
1059         return 0;
1060 }
1061
1062 static struct scripting_ops *script_spec__lookup(const char *spec)
1063 {
1064         struct script_spec *s = script_spec__find(spec);
1065         if (!s)
1066                 return NULL;
1067
1068         return s->ops;
1069 }
1070
1071 static void list_available_languages(void)
1072 {
1073         struct script_spec *s;
1074
1075         fprintf(stderr, "\n");
1076         fprintf(stderr, "Scripting language extensions (used in "
1077                 "perf script -s [spec:]script.[spec]):\n\n");
1078
1079         list_for_each_entry(s, &script_specs, node)
1080                 fprintf(stderr, "  %-42s [%s]\n", s->spec, s->ops->name);
1081
1082         fprintf(stderr, "\n");
1083 }
1084
1085 static int parse_scriptname(const struct option *opt __maybe_unused,
1086                             const char *str, int unset __maybe_unused)
1087 {
1088         char spec[PATH_MAX];
1089         const char *script, *ext;
1090         int len;
1091
1092         if (strcmp(str, "lang") == 0) {
1093                 list_available_languages();
1094                 exit(0);
1095         }
1096
1097         script = strchr(str, ':');
1098         if (script) {
1099                 len = script - str;
1100                 if (len >= PATH_MAX) {
1101                         fprintf(stderr, "invalid language specifier");
1102                         return -1;
1103                 }
1104                 strncpy(spec, str, len);
1105                 spec[len] = '\0';
1106                 scripting_ops = script_spec__lookup(spec);
1107                 if (!scripting_ops) {
1108                         fprintf(stderr, "invalid language specifier");
1109                         return -1;
1110                 }
1111                 script++;
1112         } else {
1113                 script = str;
1114                 ext = strrchr(script, '.');
1115                 if (!ext) {
1116                         fprintf(stderr, "invalid script extension");
1117                         return -1;
1118                 }
1119                 scripting_ops = script_spec__lookup(++ext);
1120                 if (!scripting_ops) {
1121                         fprintf(stderr, "invalid script extension");
1122                         return -1;
1123                 }
1124         }
1125
1126         script_name = strdup(script);
1127
1128         return 0;
1129 }
1130
1131 static int parse_output_fields(const struct option *opt __maybe_unused,
1132                             const char *arg, int unset __maybe_unused)
1133 {
1134         char *tok;
1135         int i, imax = ARRAY_SIZE(all_output_options);
1136         int j;
1137         int rc = 0;
1138         char *str = strdup(arg);
1139         int type = -1;
1140
1141         if (!str)
1142                 return -ENOMEM;
1143
1144         /* first word can state for which event type the user is specifying
1145          * the fields. If no type exists, the specified fields apply to all
1146          * event types found in the file minus the invalid fields for a type.
1147          */
1148         tok = strchr(str, ':');
1149         if (tok) {
1150                 *tok = '\0';
1151                 tok++;
1152                 if (!strcmp(str, "hw"))
1153                         type = PERF_TYPE_HARDWARE;
1154                 else if (!strcmp(str, "sw"))
1155                         type = PERF_TYPE_SOFTWARE;
1156                 else if (!strcmp(str, "trace"))
1157                         type = PERF_TYPE_TRACEPOINT;
1158                 else if (!strcmp(str, "raw"))
1159                         type = PERF_TYPE_RAW;
1160                 else {
1161                         fprintf(stderr, "Invalid event type in field string.\n");
1162                         rc = -EINVAL;
1163                         goto out;
1164                 }
1165
1166                 if (output[type].user_set)
1167                         pr_warning("Overriding previous field request for %s events.\n",
1168                                    event_type(type));
1169
1170                 output[type].fields = 0;
1171                 output[type].user_set = true;
1172                 output[type].wildcard_set = false;
1173
1174         } else {
1175                 tok = str;
1176                 if (strlen(str) == 0) {
1177                         fprintf(stderr,
1178                                 "Cannot set fields to 'none' for all event types.\n");
1179                         rc = -EINVAL;
1180                         goto out;
1181                 }
1182
1183                 if (output_set_by_user())
1184                         pr_warning("Overriding previous field request for all events.\n");
1185
1186                 for (j = 0; j < PERF_TYPE_MAX; ++j) {
1187                         output[j].fields = 0;
1188                         output[j].user_set = true;
1189                         output[j].wildcard_set = true;
1190                 }
1191         }
1192
1193         for (tok = strtok(tok, ","); tok; tok = strtok(NULL, ",")) {
1194                 for (i = 0; i < imax; ++i) {
1195                         if (strcmp(tok, all_output_options[i].str) == 0)
1196                                 break;
1197                 }
1198                 if (i == imax && strcmp(tok, "flags") == 0) {
1199                         print_flags = true;
1200                         continue;
1201                 }
1202                 if (i == imax) {
1203                         fprintf(stderr, "Invalid field requested.\n");
1204                         rc = -EINVAL;
1205                         goto out;
1206                 }
1207
1208                 if (type == -1) {
1209                         /* add user option to all events types for
1210                          * which it is valid
1211                          */
1212                         for (j = 0; j < PERF_TYPE_MAX; ++j) {
1213                                 if (output[j].invalid_fields & all_output_options[i].field) {
1214                                         pr_warning("\'%s\' not valid for %s events. Ignoring.\n",
1215                                                    all_output_options[i].str, event_type(j));
1216                                 } else
1217                                         output[j].fields |= all_output_options[i].field;
1218                         }
1219                 } else {
1220                         if (output[type].invalid_fields & all_output_options[i].field) {
1221                                 fprintf(stderr, "\'%s\' not valid for %s events.\n",
1222                                          all_output_options[i].str, event_type(type));
1223
1224                                 rc = -EINVAL;
1225                                 goto out;
1226                         }
1227                         output[type].fields |= all_output_options[i].field;
1228                 }
1229         }
1230
1231         if (type >= 0) {
1232                 if (output[type].fields == 0) {
1233                         pr_debug("No fields requested for %s type. "
1234                                  "Events will not be displayed.\n", event_type(type));
1235                 }
1236         }
1237
1238 out:
1239         free(str);
1240         return rc;
1241 }
1242
1243 /* Helper function for filesystems that return a dent->d_type DT_UNKNOWN */
1244 static int is_directory(const char *base_path, const struct dirent *dent)
1245 {
1246         char path[PATH_MAX];
1247         struct stat st;
1248
1249         sprintf(path, "%s/%s", base_path, dent->d_name);
1250         if (stat(path, &st))
1251                 return 0;
1252
1253         return S_ISDIR(st.st_mode);
1254 }
1255
1256 #define for_each_lang(scripts_path, scripts_dir, lang_dirent, lang_next)\
1257         while (!readdir_r(scripts_dir, &lang_dirent, &lang_next) &&     \
1258                lang_next)                                               \
1259                 if ((lang_dirent.d_type == DT_DIR ||                    \
1260                      (lang_dirent.d_type == DT_UNKNOWN &&               \
1261                       is_directory(scripts_path, &lang_dirent))) &&     \
1262                     (strcmp(lang_dirent.d_name, ".")) &&                \
1263                     (strcmp(lang_dirent.d_name, "..")))
1264
1265 #define for_each_script(lang_path, lang_dir, script_dirent, script_next)\
1266         while (!readdir_r(lang_dir, &script_dirent, &script_next) &&    \
1267                script_next)                                             \
1268                 if (script_dirent.d_type != DT_DIR &&                   \
1269                     (script_dirent.d_type != DT_UNKNOWN ||              \
1270                      !is_directory(lang_path, &script_dirent)))
1271
1272
1273 #define RECORD_SUFFIX                   "-record"
1274 #define REPORT_SUFFIX                   "-report"
1275
1276 struct script_desc {
1277         struct list_head        node;
1278         char                    *name;
1279         char                    *half_liner;
1280         char                    *args;
1281 };
1282
1283 static LIST_HEAD(script_descs);
1284
1285 static struct script_desc *script_desc__new(const char *name)
1286 {
1287         struct script_desc *s = zalloc(sizeof(*s));
1288
1289         if (s != NULL && name)
1290                 s->name = strdup(name);
1291
1292         return s;
1293 }
1294
1295 static void script_desc__delete(struct script_desc *s)
1296 {
1297         zfree(&s->name);
1298         zfree(&s->half_liner);
1299         zfree(&s->args);
1300         free(s);
1301 }
1302
1303 static void script_desc__add(struct script_desc *s)
1304 {
1305         list_add_tail(&s->node, &script_descs);
1306 }
1307
1308 static struct script_desc *script_desc__find(const char *name)
1309 {
1310         struct script_desc *s;
1311
1312         list_for_each_entry(s, &script_descs, node)
1313                 if (strcasecmp(s->name, name) == 0)
1314                         return s;
1315         return NULL;
1316 }
1317
1318 static struct script_desc *script_desc__findnew(const char *name)
1319 {
1320         struct script_desc *s = script_desc__find(name);
1321
1322         if (s)
1323                 return s;
1324
1325         s = script_desc__new(name);
1326         if (!s)
1327                 goto out_delete_desc;
1328
1329         script_desc__add(s);
1330
1331         return s;
1332
1333 out_delete_desc:
1334         script_desc__delete(s);
1335
1336         return NULL;
1337 }
1338
1339 static const char *ends_with(const char *str, const char *suffix)
1340 {
1341         size_t suffix_len = strlen(suffix);
1342         const char *p = str;
1343
1344         if (strlen(str) > suffix_len) {
1345                 p = str + strlen(str) - suffix_len;
1346                 if (!strncmp(p, suffix, suffix_len))
1347                         return p;
1348         }
1349
1350         return NULL;
1351 }
1352
1353 static int read_script_info(struct script_desc *desc, const char *filename)
1354 {
1355         char line[BUFSIZ], *p;
1356         FILE *fp;
1357
1358         fp = fopen(filename, "r");
1359         if (!fp)
1360                 return -1;
1361
1362         while (fgets(line, sizeof(line), fp)) {
1363                 p = ltrim(line);
1364                 if (strlen(p) == 0)
1365                         continue;
1366                 if (*p != '#')
1367                         continue;
1368                 p++;
1369                 if (strlen(p) && *p == '!')
1370                         continue;
1371
1372                 p = ltrim(p);
1373                 if (strlen(p) && p[strlen(p) - 1] == '\n')
1374                         p[strlen(p) - 1] = '\0';
1375
1376                 if (!strncmp(p, "description:", strlen("description:"))) {
1377                         p += strlen("description:");
1378                         desc->half_liner = strdup(ltrim(p));
1379                         continue;
1380                 }
1381
1382                 if (!strncmp(p, "args:", strlen("args:"))) {
1383                         p += strlen("args:");
1384                         desc->args = strdup(ltrim(p));
1385                         continue;
1386                 }
1387         }
1388
1389         fclose(fp);
1390
1391         return 0;
1392 }
1393
1394 static char *get_script_root(struct dirent *script_dirent, const char *suffix)
1395 {
1396         char *script_root, *str;
1397
1398         script_root = strdup(script_dirent->d_name);
1399         if (!script_root)
1400                 return NULL;
1401
1402         str = (char *)ends_with(script_root, suffix);
1403         if (!str) {
1404                 free(script_root);
1405                 return NULL;
1406         }
1407
1408         *str = '\0';
1409         return script_root;
1410 }
1411
1412 static int list_available_scripts(const struct option *opt __maybe_unused,
1413                                   const char *s __maybe_unused,
1414                                   int unset __maybe_unused)
1415 {
1416         struct dirent *script_next, *lang_next, script_dirent, lang_dirent;
1417         char scripts_path[MAXPATHLEN];
1418         DIR *scripts_dir, *lang_dir;
1419         char script_path[MAXPATHLEN];
1420         char lang_path[MAXPATHLEN];
1421         struct script_desc *desc;
1422         char first_half[BUFSIZ];
1423         char *script_root;
1424
1425         snprintf(scripts_path, MAXPATHLEN, "%s/scripts", perf_exec_path());
1426
1427         scripts_dir = opendir(scripts_path);
1428         if (!scripts_dir)
1429                 return -1;
1430
1431         for_each_lang(scripts_path, scripts_dir, lang_dirent, lang_next) {
1432                 snprintf(lang_path, MAXPATHLEN, "%s/%s/bin", scripts_path,
1433                          lang_dirent.d_name);
1434                 lang_dir = opendir(lang_path);
1435                 if (!lang_dir)
1436                         continue;
1437
1438                 for_each_script(lang_path, lang_dir, script_dirent, script_next) {
1439                         script_root = get_script_root(&script_dirent, REPORT_SUFFIX);
1440                         if (script_root) {
1441                                 desc = script_desc__findnew(script_root);
1442                                 snprintf(script_path, MAXPATHLEN, "%s/%s",
1443                                          lang_path, script_dirent.d_name);
1444                                 read_script_info(desc, script_path);
1445                                 free(script_root);
1446                         }
1447                 }
1448         }
1449
1450         fprintf(stdout, "List of available trace scripts:\n");
1451         list_for_each_entry(desc, &script_descs, node) {
1452                 sprintf(first_half, "%s %s", desc->name,
1453                         desc->args ? desc->args : "");
1454                 fprintf(stdout, "  %-36s %s\n", first_half,
1455                         desc->half_liner ? desc->half_liner : "");
1456         }
1457
1458         exit(0);
1459 }
1460
1461 /*
1462  * Some scripts specify the required events in their "xxx-record" file,
1463  * this function will check if the events in perf.data match those
1464  * mentioned in the "xxx-record".
1465  *
1466  * Fixme: All existing "xxx-record" are all in good formats "-e event ",
1467  * which is covered well now. And new parsing code should be added to
1468  * cover the future complexing formats like event groups etc.
1469  */
1470 static int check_ev_match(char *dir_name, char *scriptname,
1471                         struct perf_session *session)
1472 {
1473         char filename[MAXPATHLEN], evname[128];
1474         char line[BUFSIZ], *p;
1475         struct perf_evsel *pos;
1476         int match, len;
1477         FILE *fp;
1478
1479         sprintf(filename, "%s/bin/%s-record", dir_name, scriptname);
1480
1481         fp = fopen(filename, "r");
1482         if (!fp)
1483                 return -1;
1484
1485         while (fgets(line, sizeof(line), fp)) {
1486                 p = ltrim(line);
1487                 if (*p == '#')
1488                         continue;
1489
1490                 while (strlen(p)) {
1491                         p = strstr(p, "-e");
1492                         if (!p)
1493                                 break;
1494
1495                         p += 2;
1496                         p = ltrim(p);
1497                         len = strcspn(p, " \t");
1498                         if (!len)
1499                                 break;
1500
1501                         snprintf(evname, len + 1, "%s", p);
1502
1503                         match = 0;
1504                         evlist__for_each(session->evlist, pos) {
1505                                 if (!strcmp(perf_evsel__name(pos), evname)) {
1506                                         match = 1;
1507                                         break;
1508                                 }
1509                         }
1510
1511                         if (!match) {
1512                                 fclose(fp);
1513                                 return -1;
1514                         }
1515                 }
1516         }
1517
1518         fclose(fp);
1519         return 0;
1520 }
1521
1522 /*
1523  * Return -1 if none is found, otherwise the actual scripts number.
1524  *
1525  * Currently the only user of this function is the script browser, which
1526  * will list all statically runnable scripts, select one, execute it and
1527  * show the output in a perf browser.
1528  */
1529 int find_scripts(char **scripts_array, char **scripts_path_array)
1530 {
1531         struct dirent *script_next, *lang_next, script_dirent, lang_dirent;
1532         char scripts_path[MAXPATHLEN], lang_path[MAXPATHLEN];
1533         DIR *scripts_dir, *lang_dir;
1534         struct perf_session *session;
1535         struct perf_data_file file = {
1536                 .path = input_name,
1537                 .mode = PERF_DATA_MODE_READ,
1538         };
1539         char *temp;
1540         int i = 0;
1541
1542         session = perf_session__new(&file, false, NULL);
1543         if (!session)
1544                 return -1;
1545
1546         snprintf(scripts_path, MAXPATHLEN, "%s/scripts", perf_exec_path());
1547
1548         scripts_dir = opendir(scripts_path);
1549         if (!scripts_dir) {
1550                 perf_session__delete(session);
1551                 return -1;
1552         }
1553
1554         for_each_lang(scripts_path, scripts_dir, lang_dirent, lang_next) {
1555                 snprintf(lang_path, MAXPATHLEN, "%s/%s", scripts_path,
1556                          lang_dirent.d_name);
1557 #ifdef NO_LIBPERL
1558                 if (strstr(lang_path, "perl"))
1559                         continue;
1560 #endif
1561 #ifdef NO_LIBPYTHON
1562                 if (strstr(lang_path, "python"))
1563                         continue;
1564 #endif
1565
1566                 lang_dir = opendir(lang_path);
1567                 if (!lang_dir)
1568                         continue;
1569
1570                 for_each_script(lang_path, lang_dir, script_dirent, script_next) {
1571                         /* Skip those real time scripts: xxxtop.p[yl] */
1572                         if (strstr(script_dirent.d_name, "top."))
1573                                 continue;
1574                         sprintf(scripts_path_array[i], "%s/%s", lang_path,
1575                                 script_dirent.d_name);
1576                         temp = strchr(script_dirent.d_name, '.');
1577                         snprintf(scripts_array[i],
1578                                 (temp - script_dirent.d_name) + 1,
1579                                 "%s", script_dirent.d_name);
1580
1581                         if (check_ev_match(lang_path,
1582                                         scripts_array[i], session))
1583                                 continue;
1584
1585                         i++;
1586                 }
1587                 closedir(lang_dir);
1588         }
1589
1590         closedir(scripts_dir);
1591         perf_session__delete(session);
1592         return i;
1593 }
1594
1595 static char *get_script_path(const char *script_root, const char *suffix)
1596 {
1597         struct dirent *script_next, *lang_next, script_dirent, lang_dirent;
1598         char scripts_path[MAXPATHLEN];
1599         char script_path[MAXPATHLEN];
1600         DIR *scripts_dir, *lang_dir;
1601         char lang_path[MAXPATHLEN];
1602         char *__script_root;
1603
1604         snprintf(scripts_path, MAXPATHLEN, "%s/scripts", perf_exec_path());
1605
1606         scripts_dir = opendir(scripts_path);
1607         if (!scripts_dir)
1608                 return NULL;
1609
1610         for_each_lang(scripts_path, scripts_dir, lang_dirent, lang_next) {
1611                 snprintf(lang_path, MAXPATHLEN, "%s/%s/bin", scripts_path,
1612                          lang_dirent.d_name);
1613                 lang_dir = opendir(lang_path);
1614                 if (!lang_dir)
1615                         continue;
1616
1617                 for_each_script(lang_path, lang_dir, script_dirent, script_next) {
1618                         __script_root = get_script_root(&script_dirent, suffix);
1619                         if (__script_root && !strcmp(script_root, __script_root)) {
1620                                 free(__script_root);
1621                                 closedir(lang_dir);
1622                                 closedir(scripts_dir);
1623                                 snprintf(script_path, MAXPATHLEN, "%s/%s",
1624                                          lang_path, script_dirent.d_name);
1625                                 return strdup(script_path);
1626                         }
1627                         free(__script_root);
1628                 }
1629                 closedir(lang_dir);
1630         }
1631         closedir(scripts_dir);
1632
1633         return NULL;
1634 }
1635
1636 static bool is_top_script(const char *script_path)
1637 {
1638         return ends_with(script_path, "top") == NULL ? false : true;
1639 }
1640
1641 static int has_required_arg(char *script_path)
1642 {
1643         struct script_desc *desc;
1644         int n_args = 0;
1645         char *p;
1646
1647         desc = script_desc__new(NULL);
1648
1649         if (read_script_info(desc, script_path))
1650                 goto out;
1651
1652         if (!desc->args)
1653                 goto out;
1654
1655         for (p = desc->args; *p; p++)
1656                 if (*p == '<')
1657                         n_args++;
1658 out:
1659         script_desc__delete(desc);
1660
1661         return n_args;
1662 }
1663
1664 static int have_cmd(int argc, const char **argv)
1665 {
1666         char **__argv = malloc(sizeof(const char *) * argc);
1667
1668         if (!__argv) {
1669                 pr_err("malloc failed\n");
1670                 return -1;
1671         }
1672
1673         memcpy(__argv, argv, sizeof(const char *) * argc);
1674         argc = parse_options(argc, (const char **)__argv, record_options,
1675                              NULL, PARSE_OPT_STOP_AT_NON_OPTION);
1676         free(__argv);
1677
1678         system_wide = (argc == 0);
1679
1680         return 0;
1681 }
1682
1683 static void script__setup_sample_type(struct perf_script *script)
1684 {
1685         struct perf_session *session = script->session;
1686         u64 sample_type = perf_evlist__combined_sample_type(session->evlist);
1687
1688         if (symbol_conf.use_callchain || symbol_conf.cumulate_callchain) {
1689                 if ((sample_type & PERF_SAMPLE_REGS_USER) &&
1690                     (sample_type & PERF_SAMPLE_STACK_USER))
1691                         callchain_param.record_mode = CALLCHAIN_DWARF;
1692                 else if (sample_type & PERF_SAMPLE_BRANCH_STACK)
1693                         callchain_param.record_mode = CALLCHAIN_LBR;
1694                 else
1695                         callchain_param.record_mode = CALLCHAIN_FP;
1696         }
1697 }
1698
1699 int cmd_script(int argc, const char **argv, const char *prefix __maybe_unused)
1700 {
1701         bool show_full_info = false;
1702         bool header = false;
1703         bool header_only = false;
1704         bool script_started = false;
1705         char *rec_script_path = NULL;
1706         char *rep_script_path = NULL;
1707         struct perf_session *session;
1708         struct itrace_synth_opts itrace_synth_opts = { .set = false, };
1709         char *script_path = NULL;
1710         const char **__argv;
1711         int i, j, err = 0;
1712         struct perf_script script = {
1713                 .tool = {
1714                         .sample          = process_sample_event,
1715                         .mmap            = perf_event__process_mmap,
1716                         .mmap2           = perf_event__process_mmap2,
1717                         .comm            = perf_event__process_comm,
1718                         .exit            = perf_event__process_exit,
1719                         .fork            = perf_event__process_fork,
1720                         .attr            = process_attr,
1721                         .tracing_data    = perf_event__process_tracing_data,
1722                         .build_id        = perf_event__process_build_id,
1723                         .id_index        = perf_event__process_id_index,
1724                         .auxtrace_info   = perf_event__process_auxtrace_info,
1725                         .auxtrace        = perf_event__process_auxtrace,
1726                         .auxtrace_error  = perf_event__process_auxtrace_error,
1727                         .ordered_events  = true,
1728                         .ordering_requires_timestamps = true,
1729                 },
1730         };
1731         struct perf_data_file file = {
1732                 .mode = PERF_DATA_MODE_READ,
1733         };
1734         const struct option options[] = {
1735         OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
1736                     "dump raw trace in ASCII"),
1737         OPT_INCR('v', "verbose", &verbose,
1738                  "be more verbose (show symbol address, etc)"),
1739         OPT_BOOLEAN('L', "Latency", &latency_format,
1740                     "show latency attributes (irqs/preemption disabled, etc)"),
1741         OPT_CALLBACK_NOOPT('l', "list", NULL, NULL, "list available scripts",
1742                            list_available_scripts),
1743         OPT_CALLBACK('s', "script", NULL, "name",
1744                      "script file name (lang:script name, script name, or *)",
1745                      parse_scriptname),
1746         OPT_STRING('g', "gen-script", &generate_script_lang, "lang",
1747                    "generate perf-script.xx script in specified language"),
1748         OPT_STRING('i', "input", &input_name, "file", "input file name"),
1749         OPT_BOOLEAN('d', "debug-mode", &debug_mode,
1750                    "do various checks like samples ordering and lost events"),
1751         OPT_BOOLEAN(0, "header", &header, "Show data header."),
1752         OPT_BOOLEAN(0, "header-only", &header_only, "Show only data header."),
1753         OPT_STRING('k', "vmlinux", &symbol_conf.vmlinux_name,
1754                    "file", "vmlinux pathname"),
1755         OPT_STRING(0, "kallsyms", &symbol_conf.kallsyms_name,
1756                    "file", "kallsyms pathname"),
1757         OPT_BOOLEAN('G', "hide-call-graph", &no_callchain,
1758                     "When printing symbols do not display call chain"),
1759         OPT_STRING(0, "symfs", &symbol_conf.symfs, "directory",
1760                     "Look for files with symbols relative to this directory"),
1761         OPT_CALLBACK('F', "fields", NULL, "str",
1762                      "comma separated output fields prepend with 'type:'. "
1763                      "Valid types: hw,sw,trace,raw. "
1764                      "Fields: comm,tid,pid,time,cpu,event,trace,ip,sym,dso,"
1765                      "addr,symoff,period,iregs,brstack,brstacksym,flags", parse_output_fields),
1766         OPT_BOOLEAN('a', "all-cpus", &system_wide,
1767                     "system-wide collection from all CPUs"),
1768         OPT_STRING('S', "symbols", &symbol_conf.sym_list_str, "symbol[,symbol...]",
1769                    "only consider these symbols"),
1770         OPT_STRING('C', "cpu", &cpu_list, "cpu", "list of cpus to profile"),
1771         OPT_STRING('c', "comms", &symbol_conf.comm_list_str, "comm[,comm...]",
1772                    "only display events for these comms"),
1773         OPT_STRING(0, "pid", &symbol_conf.pid_list_str, "pid[,pid...]",
1774                    "only consider symbols in these pids"),
1775         OPT_STRING(0, "tid", &symbol_conf.tid_list_str, "tid[,tid...]",
1776                    "only consider symbols in these tids"),
1777         OPT_BOOLEAN('I', "show-info", &show_full_info,
1778                     "display extended information from perf.data file"),
1779         OPT_BOOLEAN('\0', "show-kernel-path", &symbol_conf.show_kernel_path,
1780                     "Show the path of [kernel.kallsyms]"),
1781         OPT_BOOLEAN('\0', "show-task-events", &script.show_task_events,
1782                     "Show the fork/comm/exit events"),
1783         OPT_BOOLEAN('\0', "show-mmap-events", &script.show_mmap_events,
1784                     "Show the mmap events"),
1785         OPT_BOOLEAN('\0', "show-switch-events", &script.show_switch_events,
1786                     "Show context switch events (if recorded)"),
1787         OPT_BOOLEAN('f', "force", &file.force, "don't complain, do it"),
1788         OPT_BOOLEAN(0, "ns", &nanosecs,
1789                     "Use 9 decimal places when displaying time"),
1790         OPT_CALLBACK_OPTARG(0, "itrace", &itrace_synth_opts, NULL, "opts",
1791                             "Instruction Tracing options",
1792                             itrace_parse_synth_opts),
1793         OPT_BOOLEAN(0, "full-source-path", &srcline_full_filename,
1794                         "Show full source file name path for source lines"),
1795         OPT_BOOLEAN(0, "demangle", &symbol_conf.demangle,
1796                         "Enable symbol demangling"),
1797         OPT_BOOLEAN(0, "demangle-kernel", &symbol_conf.demangle_kernel,
1798                         "Enable kernel symbol demangling"),
1799
1800         OPT_END()
1801         };
1802         const char * const script_subcommands[] = { "record", "report", NULL };
1803         const char *script_usage[] = {
1804                 "perf script [<options>]",
1805                 "perf script [<options>] record <script> [<record-options>] <command>",
1806                 "perf script [<options>] report <script> [script-args]",
1807                 "perf script [<options>] <script> [<record-options>] <command>",
1808                 "perf script [<options>] <top-script> [script-args]",
1809                 NULL
1810         };
1811
1812         setup_scripting();
1813
1814         argc = parse_options_subcommand(argc, argv, options, script_subcommands, script_usage,
1815                              PARSE_OPT_STOP_AT_NON_OPTION);
1816
1817         file.path = input_name;
1818
1819         if (argc > 1 && !strncmp(argv[0], "rec", strlen("rec"))) {
1820                 rec_script_path = get_script_path(argv[1], RECORD_SUFFIX);
1821                 if (!rec_script_path)
1822                         return cmd_record(argc, argv, NULL);
1823         }
1824
1825         if (argc > 1 && !strncmp(argv[0], "rep", strlen("rep"))) {
1826                 rep_script_path = get_script_path(argv[1], REPORT_SUFFIX);
1827                 if (!rep_script_path) {
1828                         fprintf(stderr,
1829                                 "Please specify a valid report script"
1830                                 "(see 'perf script -l' for listing)\n");
1831                         return -1;
1832                 }
1833         }
1834
1835         if (itrace_synth_opts.callchain &&
1836             itrace_synth_opts.callchain_sz > scripting_max_stack)
1837                 scripting_max_stack = itrace_synth_opts.callchain_sz;
1838
1839         /* make sure PERF_EXEC_PATH is set for scripts */
1840         perf_set_argv_exec_path(perf_exec_path());
1841
1842         if (argc && !script_name && !rec_script_path && !rep_script_path) {
1843                 int live_pipe[2];
1844                 int rep_args;
1845                 pid_t pid;
1846
1847                 rec_script_path = get_script_path(argv[0], RECORD_SUFFIX);
1848                 rep_script_path = get_script_path(argv[0], REPORT_SUFFIX);
1849
1850                 if (!rec_script_path && !rep_script_path) {
1851                         usage_with_options_msg(script_usage, options,
1852                                 "Couldn't find script `%s'\n\n See perf"
1853                                 " script -l for available scripts.\n", argv[0]);
1854                 }
1855
1856                 if (is_top_script(argv[0])) {
1857                         rep_args = argc - 1;
1858                 } else {
1859                         int rec_args;
1860
1861                         rep_args = has_required_arg(rep_script_path);
1862                         rec_args = (argc - 1) - rep_args;
1863                         if (rec_args < 0) {
1864                                 usage_with_options_msg(script_usage, options,
1865                                         "`%s' script requires options."
1866                                         "\n\n See perf script -l for available "
1867                                         "scripts and options.\n", argv[0]);
1868                         }
1869                 }
1870
1871                 if (pipe(live_pipe) < 0) {
1872                         perror("failed to create pipe");
1873                         return -1;
1874                 }
1875
1876                 pid = fork();
1877                 if (pid < 0) {
1878                         perror("failed to fork");
1879                         return -1;
1880                 }
1881
1882                 if (!pid) {
1883                         j = 0;
1884
1885                         dup2(live_pipe[1], 1);
1886                         close(live_pipe[0]);
1887
1888                         if (is_top_script(argv[0])) {
1889                                 system_wide = true;
1890                         } else if (!system_wide) {
1891                                 if (have_cmd(argc - rep_args, &argv[rep_args]) != 0) {
1892                                         err = -1;
1893                                         goto out;
1894                                 }
1895                         }
1896
1897                         __argv = malloc((argc + 6) * sizeof(const char *));
1898                         if (!__argv) {
1899                                 pr_err("malloc failed\n");
1900                                 err = -ENOMEM;
1901                                 goto out;
1902                         }
1903
1904                         __argv[j++] = "/bin/sh";
1905                         __argv[j++] = rec_script_path;
1906                         if (system_wide)
1907                                 __argv[j++] = "-a";
1908                         __argv[j++] = "-q";
1909                         __argv[j++] = "-o";
1910                         __argv[j++] = "-";
1911                         for (i = rep_args + 1; i < argc; i++)
1912                                 __argv[j++] = argv[i];
1913                         __argv[j++] = NULL;
1914
1915                         execvp("/bin/sh", (char **)__argv);
1916                         free(__argv);
1917                         exit(-1);
1918                 }
1919
1920                 dup2(live_pipe[0], 0);
1921                 close(live_pipe[1]);
1922
1923                 __argv = malloc((argc + 4) * sizeof(const char *));
1924                 if (!__argv) {
1925                         pr_err("malloc failed\n");
1926                         err = -ENOMEM;
1927                         goto out;
1928                 }
1929
1930                 j = 0;
1931                 __argv[j++] = "/bin/sh";
1932                 __argv[j++] = rep_script_path;
1933                 for (i = 1; i < rep_args + 1; i++)
1934                         __argv[j++] = argv[i];
1935                 __argv[j++] = "-i";
1936                 __argv[j++] = "-";
1937                 __argv[j++] = NULL;
1938
1939                 execvp("/bin/sh", (char **)__argv);
1940                 free(__argv);
1941                 exit(-1);
1942         }
1943
1944         if (rec_script_path)
1945                 script_path = rec_script_path;
1946         if (rep_script_path)
1947                 script_path = rep_script_path;
1948
1949         if (script_path) {
1950                 j = 0;
1951
1952                 if (!rec_script_path)
1953                         system_wide = false;
1954                 else if (!system_wide) {
1955                         if (have_cmd(argc - 1, &argv[1]) != 0) {
1956                                 err = -1;
1957                                 goto out;
1958                         }
1959                 }
1960
1961                 __argv = malloc((argc + 2) * sizeof(const char *));
1962                 if (!__argv) {
1963                         pr_err("malloc failed\n");
1964                         err = -ENOMEM;
1965                         goto out;
1966                 }
1967
1968                 __argv[j++] = "/bin/sh";
1969                 __argv[j++] = script_path;
1970                 if (system_wide)
1971                         __argv[j++] = "-a";
1972                 for (i = 2; i < argc; i++)
1973                         __argv[j++] = argv[i];
1974                 __argv[j++] = NULL;
1975
1976                 execvp("/bin/sh", (char **)__argv);
1977                 free(__argv);
1978                 exit(-1);
1979         }
1980
1981         if (!script_name)
1982                 setup_pager();
1983
1984         session = perf_session__new(&file, false, &script.tool);
1985         if (session == NULL)
1986                 return -1;
1987
1988         if (header || header_only) {
1989                 perf_session__fprintf_info(session, stdout, show_full_info);
1990                 if (header_only)
1991                         goto out_delete;
1992         }
1993
1994         if (symbol__init(&session->header.env) < 0)
1995                 goto out_delete;
1996
1997         script.session = session;
1998         script__setup_sample_type(&script);
1999
2000         session->itrace_synth_opts = &itrace_synth_opts;
2001
2002         if (cpu_list) {
2003                 err = perf_session__cpu_bitmap(session, cpu_list, cpu_bitmap);
2004                 if (err < 0)
2005                         goto out_delete;
2006         }
2007
2008         if (!no_callchain)
2009                 symbol_conf.use_callchain = true;
2010         else
2011                 symbol_conf.use_callchain = false;
2012
2013         if (session->tevent.pevent &&
2014             pevent_set_function_resolver(session->tevent.pevent,
2015                                          machine__resolve_kernel_addr,
2016                                          &session->machines.host) < 0) {
2017                 pr_err("%s: failed to set libtraceevent function resolver\n", __func__);
2018                 return -1;
2019         }
2020
2021         if (generate_script_lang) {
2022                 struct stat perf_stat;
2023                 int input;
2024
2025                 if (output_set_by_user()) {
2026                         fprintf(stderr,
2027                                 "custom fields not supported for generated scripts");
2028                         err = -EINVAL;
2029                         goto out_delete;
2030                 }
2031
2032                 input = open(file.path, O_RDONLY);      /* input_name */
2033                 if (input < 0) {
2034                         err = -errno;
2035                         perror("failed to open file");
2036                         goto out_delete;
2037                 }
2038
2039                 err = fstat(input, &perf_stat);
2040                 if (err < 0) {
2041                         perror("failed to stat file");
2042                         goto out_delete;
2043                 }
2044
2045                 if (!perf_stat.st_size) {
2046                         fprintf(stderr, "zero-sized file, nothing to do!\n");
2047                         goto out_delete;
2048                 }
2049
2050                 scripting_ops = script_spec__lookup(generate_script_lang);
2051                 if (!scripting_ops) {
2052                         fprintf(stderr, "invalid language specifier");
2053                         err = -ENOENT;
2054                         goto out_delete;
2055                 }
2056
2057                 err = scripting_ops->generate_script(session->tevent.pevent,
2058                                                      "perf-script");
2059                 goto out_delete;
2060         }
2061
2062         if (script_name) {
2063                 err = scripting_ops->start_script(script_name, argc, argv);
2064                 if (err)
2065                         goto out_delete;
2066                 pr_debug("perf script started with script %s\n\n", script_name);
2067                 script_started = true;
2068         }
2069
2070
2071         err = perf_session__check_output_opt(session);
2072         if (err < 0)
2073                 goto out_delete;
2074
2075         err = __cmd_script(&script);
2076
2077         flush_scripting();
2078
2079 out_delete:
2080         perf_session__delete(session);
2081
2082         if (script_started)
2083                 cleanup_scripting();
2084 out:
2085         return err;
2086 }