tools/perf/builtin-script.c

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