tools/perf/builtin-script.c

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