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