tools/perf/util/scripting-engines/trace-event-python.c

   1 /*
   2  * trace-event-python.  Feed trace events to an embedded Python interpreter.
   3  *
   4  * Copyright (C) 2010 Tom Zanussi <tzanussi@gmail.com>
   5  *
   6  *  This program is free software; you can redistribute it and/or modify
   7  *  it under the terms of the GNU General Public License as published by
   8  *  the Free Software Foundation; either version 2 of the License, or
   9  *  (at your option) any later version.
  10  *
  11  *  This program is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *  GNU General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU General Public License
  17  *  along with this program; if not, write to the Free Software
  18  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  *
  20  */
  21
  22 #include <Python.h>
  23
  24 #include <inttypes.h>
  25 #include <stdio.h>
  26 #include <stdlib.h>
  27 #include <string.h>
  28 #include <stdbool.h>
  29 #include <errno.h>
  30 #include <linux/bitmap.h>
  31 #include <linux/compiler.h>
  32 #include <linux/time64.h>
  33
  34 #include "../build-id.h"
  35 #include "../counts.h"
  36 #include "../debug.h"
  37 #include "../dso.h"
  38 #include "../callchain.h"
  39 #include "../evsel.h"
  40 #include "../event.h"
  41 #include "../thread.h"
  42 #include "../comm.h"
  43 #include "../machine.h"
  44 #include "../db-export.h"
  45 #include "../thread-stack.h"
  46 #include "../trace-event.h"
  47 #include "../call-path.h"
  48 #include "map.h"
  49 #include "symbol.h"
  50 #include "thread_map.h"
  51 #include "print_binary.h"
  52 #include "stat.h"
  53 #include "mem-events.h"
  54
  55 #if PY_MAJOR_VERSION < 3
  56 #define _PyUnicode_FromString(arg) \
  57   PyString_FromString(arg)
  58 #define _PyUnicode_FromStringAndSize(arg1, arg2) \
  59   PyString_FromStringAndSize((arg1), (arg2))
  60 #define _PyBytes_FromStringAndSize(arg1, arg2) \
  61   PyString_FromStringAndSize((arg1), (arg2))
  62 #define _PyLong_FromLong(arg) \
  63   PyInt_FromLong(arg)
  64 #define _PyLong_AsLong(arg) \
  65   PyInt_AsLong(arg)
  66 #define _PyCapsule_New(arg1, arg2, arg3) \
  67   PyCObject_FromVoidPtr((arg1), (arg2))
  68
  69 PyMODINIT_FUNC initperf_trace_context(void);
  70 #else
  71 #define _PyUnicode_FromString(arg) \
  72   PyUnicode_FromString(arg)
  73 #define _PyUnicode_FromStringAndSize(arg1, arg2) \
  74   PyUnicode_FromStringAndSize((arg1), (arg2))
  75 #define _PyBytes_FromStringAndSize(arg1, arg2) \
  76   PyBytes_FromStringAndSize((arg1), (arg2))
  77 #define _PyLong_FromLong(arg) \
  78   PyLong_FromLong(arg)
  79 #define _PyLong_AsLong(arg) \
  80   PyLong_AsLong(arg)
  81 #define _PyCapsule_New(arg1, arg2, arg3) \
  82   PyCapsule_New((arg1), (arg2), (arg3))
  83
  84 PyMODINIT_FUNC PyInit_perf_trace_context(void);
  85 #endif
  86
  87 #define TRACE_EVENT_TYPE_MAX                            \
  88         ((1 << (sizeof(unsigned short) * 8)) - 1)
  89
  90 static DECLARE_BITMAP(events_defined, TRACE_EVENT_TYPE_MAX);
  91
  92 #define MAX_FIELDS      64
  93 #define N_COMMON_FIELDS 7
  94
  95 extern struct scripting_context *scripting_context;
  96
  97 static char *cur_field_name;
  98 static int zero_flag_atom;
  99
 100 static PyObject *main_module, *main_dict;
 101
 102 struct tables {
 103         struct db_export        dbe;
 104         PyObject                *evsel_handler;
 105         PyObject                *machine_handler;
 106         PyObject                *thread_handler;
 107         PyObject                *comm_handler;
 108         PyObject                *comm_thread_handler;
 109         PyObject                *dso_handler;
 110         PyObject                *symbol_handler;
 111         PyObject                *branch_type_handler;
 112         PyObject                *sample_handler;
 113         PyObject                *call_path_handler;
 114         PyObject                *call_return_handler;
 115         PyObject                *synth_handler;
 116         PyObject                *context_switch_handler;
 117         bool                    db_export_mode;
 118 };
 119
 120 static struct tables tables_global;
 121
 122 static void handler_call_die(const char *handler_name) __noreturn;
 123 static void handler_call_die(const char *handler_name)
 124 {
 125         PyErr_Print();
 126         Py_FatalError("problem in Python trace event handler");
 127         // Py_FatalError does not return
 128         // but we have to make the compiler happy
 129         abort();
 130 }
 131
 132 /*
 133  * Insert val into into the dictionary and decrement the reference counter.
 134  * This is necessary for dictionaries since PyDict_SetItemString() does not
 135  * steal a reference, as opposed to PyTuple_SetItem().
 136  */
 137 static void pydict_set_item_string_decref(PyObject *dict, const char *key, PyObject *val)
 138 {
 139         PyDict_SetItemString(dict, key, val);
 140         Py_DECREF(val);
 141 }
 142
 143 static PyObject *get_handler(const char *handler_name)
 144 {
 145         PyObject *handler;
 146
 147         handler = PyDict_GetItemString(main_dict, handler_name);
 148         if (handler && !PyCallable_Check(handler))
 149                 return NULL;
 150         return handler;
 151 }
 152
 153 static int get_argument_count(PyObject *handler)
 154 {
 155         int arg_count = 0;
 156
 157         /*
 158          * The attribute for the code object is func_code in Python 2,
 159          * whereas it is __code__ in Python 3.0+.
 160          */
 161         PyObject *code_obj = PyObject_GetAttrString(handler,
 162                 "func_code");
 163         if (PyErr_Occurred()) {
 164                 PyErr_Clear();
 165                 code_obj = PyObject_GetAttrString(handler,
 166                         "__code__");
 167         }
 168         PyErr_Clear();
 169         if (code_obj) {
 170                 PyObject *arg_count_obj = PyObject_GetAttrString(code_obj,
 171                         "co_argcount");
 172                 if (arg_count_obj) {
 173                         arg_count = (int) _PyLong_AsLong(arg_count_obj);
 174                         Py_DECREF(arg_count_obj);
 175                 }
 176                 Py_DECREF(code_obj);
 177         }
 178         return arg_count;
 179 }
 180
 181 static void call_object(PyObject *handler, PyObject *args, const char *die_msg)
 182 {
 183         PyObject *retval;
 184
 185         retval = PyObject_CallObject(handler, args);
 186         if (retval == NULL)
 187                 handler_call_die(die_msg);
 188         Py_DECREF(retval);
 189 }
 190
 191 static void try_call_object(const char *handler_name, PyObject *args)
 192 {
 193         PyObject *handler;
 194
 195         handler = get_handler(handler_name);
 196         if (handler)
 197                 call_object(handler, args, handler_name);
 198 }
 199
 200 static void define_value(enum tep_print_arg_type field_type,
 201                          const char *ev_name,
 202                          const char *field_name,
 203                          const char *field_value,
 204                          const char *field_str)
 205 {
 206         const char *handler_name = "define_flag_value";
 207         PyObject *t;
 208         unsigned long long value;
 209         unsigned n = 0;
 210
 211         if (field_type == TEP_PRINT_SYMBOL)
 212                 handler_name = "define_symbolic_value";
 213
 214         t = PyTuple_New(4);
 215         if (!t)
 216                 Py_FatalError("couldn't create Python tuple");
 217
 218         value = eval_flag(field_value);
 219
 220         PyTuple_SetItem(t, n++, _PyUnicode_FromString(ev_name));
 221         PyTuple_SetItem(t, n++, _PyUnicode_FromString(field_name));
 222         PyTuple_SetItem(t, n++, _PyLong_FromLong(value));
 223         PyTuple_SetItem(t, n++, _PyUnicode_FromString(field_str));
 224
 225         try_call_object(handler_name, t);
 226
 227         Py_DECREF(t);
 228 }
 229
 230 static void define_values(enum tep_print_arg_type field_type,
 231                           struct tep_print_flag_sym *field,
 232                           const char *ev_name,
 233                           const char *field_name)
 234 {
 235         define_value(field_type, ev_name, field_name, field->value,
 236                      field->str);
 237
 238         if (field->next)
 239                 define_values(field_type, field->next, ev_name, field_name);
 240 }
 241
 242 static void define_field(enum tep_print_arg_type field_type,
 243                          const char *ev_name,
 244                          const char *field_name,
 245                          const char *delim)
 246 {
 247         const char *handler_name = "define_flag_field";
 248         PyObject *t;
 249         unsigned n = 0;
 250
 251         if (field_type == TEP_PRINT_SYMBOL)
 252                 handler_name = "define_symbolic_field";
 253
 254         if (field_type == TEP_PRINT_FLAGS)
 255                 t = PyTuple_New(3);
 256         else
 257                 t = PyTuple_New(2);
 258         if (!t)
 259                 Py_FatalError("couldn't create Python tuple");
 260
 261         PyTuple_SetItem(t, n++, _PyUnicode_FromString(ev_name));
 262         PyTuple_SetItem(t, n++, _PyUnicode_FromString(field_name));
 263         if (field_type == TEP_PRINT_FLAGS)
 264                 PyTuple_SetItem(t, n++, _PyUnicode_FromString(delim));
 265
 266         try_call_object(handler_name, t);
 267
 268         Py_DECREF(t);
 269 }
 270
 271 static void define_event_symbols(struct tep_event *event,
 272                                  const char *ev_name,
 273                                  struct tep_print_arg *args)
 274 {
 275         if (args == NULL)
 276                 return;
 277
 278         switch (args->type) {
 279         case TEP_PRINT_NULL:
 280                 break;
 281         case TEP_PRINT_ATOM:
 282                 define_value(TEP_PRINT_FLAGS, ev_name, cur_field_name, "0",
 283                              args->atom.atom);
 284                 zero_flag_atom = 0;
 285                 break;
 286         case TEP_PRINT_FIELD:
 287                 free(cur_field_name);
 288                 cur_field_name = strdup(args->field.name);
 289                 break;
 290         case TEP_PRINT_FLAGS:
 291                 define_event_symbols(event, ev_name, args->flags.field);
 292                 define_field(TEP_PRINT_FLAGS, ev_name, cur_field_name,
 293                              args->flags.delim);
 294                 define_values(TEP_PRINT_FLAGS, args->flags.flags, ev_name,
 295                               cur_field_name);
 296                 break;
 297         case TEP_PRINT_SYMBOL:
 298                 define_event_symbols(event, ev_name, args->symbol.field);
 299                 define_field(TEP_PRINT_SYMBOL, ev_name, cur_field_name, NULL);
 300                 define_values(TEP_PRINT_SYMBOL, args->symbol.symbols, ev_name,
 301                               cur_field_name);
 302                 break;
 303         case TEP_PRINT_HEX:
 304         case TEP_PRINT_HEX_STR:
 305                 define_event_symbols(event, ev_name, args->hex.field);
 306                 define_event_symbols(event, ev_name, args->hex.size);
 307                 break;
 308         case TEP_PRINT_INT_ARRAY:
 309                 define_event_symbols(event, ev_name, args->int_array.field);
 310                 define_event_symbols(event, ev_name, args->int_array.count);
 311                 define_event_symbols(event, ev_name, args->int_array.el_size);
 312                 break;
 313         case TEP_PRINT_STRING:
 314                 break;
 315         case TEP_PRINT_TYPE:
 316                 define_event_symbols(event, ev_name, args->typecast.item);
 317                 break;
 318         case TEP_PRINT_OP:
 319                 if (strcmp(args->op.op, ":") == 0)
 320                         zero_flag_atom = 1;
 321                 define_event_symbols(event, ev_name, args->op.left);
 322                 define_event_symbols(event, ev_name, args->op.right);
 323                 break;
 324         default:
 325                 /* gcc warns for these? */
 326         case TEP_PRINT_BSTRING:
 327         case TEP_PRINT_DYNAMIC_ARRAY:
 328         case TEP_PRINT_DYNAMIC_ARRAY_LEN:
 329         case TEP_PRINT_FUNC:
 330         case TEP_PRINT_BITMASK:
 331                 /* we should warn... */
 332                 return;
 333         }
 334
 335         if (args->next)
 336                 define_event_symbols(event, ev_name, args->next);
 337 }
 338
 339 static PyObject *get_field_numeric_entry(struct tep_event *event,
 340                 struct tep_format_field *field, void *data)
 341 {
 342         bool is_array = field->flags & TEP_FIELD_IS_ARRAY;
 343         PyObject *obj = NULL, *list = NULL;
 344         unsigned long long val;
 345         unsigned int item_size, n_items, i;
 346
 347         if (is_array) {
 348                 list = PyList_New(field->arraylen);
 349                 item_size = field->size / field->arraylen;
 350                 n_items = field->arraylen;
 351         } else {
 352                 item_size = field->size;
 353                 n_items = 1;
 354         }
 355
 356         for (i = 0; i < n_items; i++) {
 357
 358                 val = read_size(event, data + field->offset + i * item_size,
 359                                 item_size);
 360                 if (field->flags & TEP_FIELD_IS_SIGNED) {
 361                         if ((long long)val >= LONG_MIN &&
 362                                         (long long)val <= LONG_MAX)
 363                                 obj = _PyLong_FromLong(val);
 364                         else
 365                                 obj = PyLong_FromLongLong(val);
 366                 } else {
 367                         if (val <= LONG_MAX)
 368                                 obj = _PyLong_FromLong(val);
 369                         else
 370                                 obj = PyLong_FromUnsignedLongLong(val);
 371                 }
 372                 if (is_array)
 373                         PyList_SET_ITEM(list, i, obj);
 374         }
 375         if (is_array)
 376                 obj = list;
 377         return obj;
 378 }
 379
 380 static const char *get_dsoname(struct map *map)
 381 {
 382         const char *dsoname = "[unknown]";
 383
 384         if (map && map->dso) {
 385                 if (symbol_conf.show_kernel_path && map->dso->long_name)
 386                         dsoname = map->dso->long_name;
 387                 else
 388                         dsoname = map->dso->name;
 389         }
 390
 391         return dsoname;
 392 }
 393
 394 static PyObject *python_process_callchain(struct perf_sample *sample,
 395                                          struct evsel *evsel,
 396                                          struct addr_location *al)
 397 {
 398         PyObject *pylist;
 399
 400         pylist = PyList_New(0);
 401         if (!pylist)
 402                 Py_FatalError("couldn't create Python list");
 403
 404         if (!symbol_conf.use_callchain || !sample->callchain)
 405                 goto exit;
 406
 407         if (thread__resolve_callchain(al->thread, &callchain_cursor, evsel,
 408                                       sample, NULL, NULL,
 409                                       scripting_max_stack) != 0) {
 410                 pr_err("Failed to resolve callchain. Skipping\n");
 411                 goto exit;
 412         }
 413         callchain_cursor_commit(&callchain_cursor);
 414
 415
 416         while (1) {
 417                 PyObject *pyelem;
 418                 struct callchain_cursor_node *node;
 419                 node = callchain_cursor_current(&callchain_cursor);
 420                 if (!node)
 421                         break;
 422
 423                 pyelem = PyDict_New();
 424                 if (!pyelem)
 425                         Py_FatalError("couldn't create Python dictionary");
 426
 427
 428                 pydict_set_item_string_decref(pyelem, "ip",
 429                                 PyLong_FromUnsignedLongLong(node->ip));
 430
 431                 if (node->ms.sym) {
 432                         PyObject *pysym  = PyDict_New();
 433                         if (!pysym)
 434                                 Py_FatalError("couldn't create Python dictionary");
 435                         pydict_set_item_string_decref(pysym, "start",
 436                                         PyLong_FromUnsignedLongLong(node->ms.sym->start));
 437                         pydict_set_item_string_decref(pysym, "end",
 438                                         PyLong_FromUnsignedLongLong(node->ms.sym->end));
 439                         pydict_set_item_string_decref(pysym, "binding",
 440                                         _PyLong_FromLong(node->ms.sym->binding));
 441                         pydict_set_item_string_decref(pysym, "name",
 442                                         _PyUnicode_FromStringAndSize(node->ms.sym->name,
 443                                                         node->ms.sym->namelen));
 444                         pydict_set_item_string_decref(pyelem, "sym", pysym);
 445                 }
 446
 447                 if (node->ms.map) {
 448                         const char *dsoname = get_dsoname(node->ms.map);
 449
 450                         pydict_set_item_string_decref(pyelem, "dso",
 451                                         _PyUnicode_FromString(dsoname));
 452                 }
 453
 454                 callchain_cursor_advance(&callchain_cursor);
 455                 PyList_Append(pylist, pyelem);
 456                 Py_DECREF(pyelem);
 457         }
 458
 459 exit:
 460         return pylist;
 461 }
 462
 463 static PyObject *python_process_brstack(struct perf_sample *sample,
 464                                         struct thread *thread)
 465 {
 466         struct branch_stack *br = sample->branch_stack;
 467         struct branch_entry *entries = perf_sample__branch_entries(sample);
 468         PyObject *pylist;
 469         u64 i;
 470
 471         pylist = PyList_New(0);
 472         if (!pylist)
 473                 Py_FatalError("couldn't create Python list");
 474
 475         if (!(br && br->nr))
 476                 goto exit;
 477
 478         for (i = 0; i < br->nr; i++) {
 479                 PyObject *pyelem;
 480                 struct addr_location al;
 481                 const char *dsoname;
 482
 483                 pyelem = PyDict_New();
 484                 if (!pyelem)
 485                         Py_FatalError("couldn't create Python dictionary");
 486
 487                 pydict_set_item_string_decref(pyelem, "from",
 488                     PyLong_FromUnsignedLongLong(entries[i].from));
 489                 pydict_set_item_string_decref(pyelem, "to",
 490                     PyLong_FromUnsignedLongLong(entries[i].to));
 491                 pydict_set_item_string_decref(pyelem, "mispred",
 492                     PyBool_FromLong(entries[i].flags.mispred));
 493                 pydict_set_item_string_decref(pyelem, "predicted",
 494                     PyBool_FromLong(entries[i].flags.predicted));
 495                 pydict_set_item_string_decref(pyelem, "in_tx",
 496                     PyBool_FromLong(entries[i].flags.in_tx));
 497                 pydict_set_item_string_decref(pyelem, "abort",
 498                     PyBool_FromLong(entries[i].flags.abort));
 499                 pydict_set_item_string_decref(pyelem, "cycles",
 500                     PyLong_FromUnsignedLongLong(entries[i].flags.cycles));
 501
 502                 thread__find_map_fb(thread, sample->cpumode,
 503                                     entries[i].from, &al);
 504                 dsoname = get_dsoname(al.map);
 505                 pydict_set_item_string_decref(pyelem, "from_dsoname",
 506                                               _PyUnicode_FromString(dsoname));
 507
 508                 thread__find_map_fb(thread, sample->cpumode,
 509                                     entries[i].to, &al);
 510                 dsoname = get_dsoname(al.map);
 511                 pydict_set_item_string_decref(pyelem, "to_dsoname",
 512                                               _PyUnicode_FromString(dsoname));
 513
 514                 PyList_Append(pylist, pyelem);
 515                 Py_DECREF(pyelem);
 516         }
 517
 518 exit:
 519         return pylist;
 520 }
 521
 522 static unsigned long get_offset(struct symbol *sym, struct addr_location *al)
 523 {
 524         unsigned long offset;
 525
 526         if (al->addr < sym->end)
 527                 offset = al->addr - sym->start;
 528         else
 529                 offset = al->addr - al->map->start - sym->start;
 530
 531         return offset;
 532 }
 533
 534 static int get_symoff(struct symbol *sym, struct addr_location *al,
 535                       bool print_off, char *bf, int size)
 536 {
 537         unsigned long offset;
 538
 539         if (!sym || !sym->name[0])
 540                 return scnprintf(bf, size, "%s", "[unknown]");
 541
 542         if (!print_off)
 543                 return scnprintf(bf, size, "%s", sym->name);
 544
 545         offset = get_offset(sym, al);
 546
 547         return scnprintf(bf, size, "%s+0x%x", sym->name, offset);
 548 }
 549
 550 static int get_br_mspred(struct branch_flags *flags, char *bf, int size)
 551 {
 552         if (!flags->mispred  && !flags->predicted)
 553                 return scnprintf(bf, size, "%s", "-");
 554
 555         if (flags->mispred)
 556                 return scnprintf(bf, size, "%s", "M");
 557
 558         return scnprintf(bf, size, "%s", "P");
 559 }
 560
 561 static PyObject *python_process_brstacksym(struct perf_sample *sample,
 562                                            struct thread *thread)
 563 {
 564         struct branch_stack *br = sample->branch_stack;
 565         struct branch_entry *entries = perf_sample__branch_entries(sample);
 566         PyObject *pylist;
 567         u64 i;
 568         char bf[512];
 569         struct addr_location al;
 570
 571         pylist = PyList_New(0);
 572         if (!pylist)
 573                 Py_FatalError("couldn't create Python list");
 574
 575         if (!(br && br->nr))
 576                 goto exit;
 577
 578         for (i = 0; i < br->nr; i++) {
 579                 PyObject *pyelem;
 580
 581                 pyelem = PyDict_New();
 582                 if (!pyelem)
 583                         Py_FatalError("couldn't create Python dictionary");
 584
 585                 thread__find_symbol_fb(thread, sample->cpumode,
 586                                        entries[i].from, &al);
 587                 get_symoff(al.sym, &al, true, bf, sizeof(bf));
 588                 pydict_set_item_string_decref(pyelem, "from",
 589                                               _PyUnicode_FromString(bf));
 590
 591                 thread__find_symbol_fb(thread, sample->cpumode,
 592                                        entries[i].to, &al);
 593                 get_symoff(al.sym, &al, true, bf, sizeof(bf));
 594                 pydict_set_item_string_decref(pyelem, "to",
 595                                               _PyUnicode_FromString(bf));
 596
 597                 get_br_mspred(&entries[i].flags, bf, sizeof(bf));
 598                 pydict_set_item_string_decref(pyelem, "pred",
 599                                               _PyUnicode_FromString(bf));
 600
 601                 if (entries[i].flags.in_tx) {
 602                         pydict_set_item_string_decref(pyelem, "in_tx",
 603                                               _PyUnicode_FromString("X"));
 604                 } else {
 605                         pydict_set_item_string_decref(pyelem, "in_tx",
 606                                               _PyUnicode_FromString("-"));
 607                 }
 608
 609                 if (entries[i].flags.abort) {
 610                         pydict_set_item_string_decref(pyelem, "abort",
 611                                               _PyUnicode_FromString("A"));
 612                 } else {
 613                         pydict_set_item_string_decref(pyelem, "abort",
 614                                               _PyUnicode_FromString("-"));
 615                 }
 616
 617                 PyList_Append(pylist, pyelem);
 618                 Py_DECREF(pyelem);
 619         }
 620
 621 exit:
 622         return pylist;
 623 }
 624
 625 static PyObject *get_sample_value_as_tuple(struct sample_read_value *value)
 626 {
 627         PyObject *t;
 628
 629         t = PyTuple_New(2);
 630         if (!t)
 631                 Py_FatalError("couldn't create Python tuple");
 632         PyTuple_SetItem(t, 0, PyLong_FromUnsignedLongLong(value->id));
 633         PyTuple_SetItem(t, 1, PyLong_FromUnsignedLongLong(value->value));
 634         return t;
 635 }
 636
 637 static void set_sample_read_in_dict(PyObject *dict_sample,
 638                                          struct perf_sample *sample,
 639                                          struct evsel *evsel)
 640 {
 641         u64 read_format = evsel->core.attr.read_format;
 642         PyObject *values;
 643         unsigned int i;
 644
 645         if (read_format & PERF_FORMAT_TOTAL_TIME_ENABLED) {
 646                 pydict_set_item_string_decref(dict_sample, "time_enabled",
 647                         PyLong_FromUnsignedLongLong(sample->read.time_enabled));
 648         }
 649
 650         if (read_format & PERF_FORMAT_TOTAL_TIME_RUNNING) {
 651                 pydict_set_item_string_decref(dict_sample, "time_running",
 652                         PyLong_FromUnsignedLongLong(sample->read.time_running));
 653         }
 654
 655         if (read_format & PERF_FORMAT_GROUP)
 656                 values = PyList_New(sample->read.group.nr);
 657         else
 658                 values = PyList_New(1);
 659
 660         if (!values)
 661                 Py_FatalError("couldn't create Python list");
 662
 663         if (read_format & PERF_FORMAT_GROUP) {
 664                 for (i = 0; i < sample->read.group.nr; i++) {
 665                         PyObject *t = get_sample_value_as_tuple(&sample->read.group.values[i]);
 666                         PyList_SET_ITEM(values, i, t);
 667                 }
 668         } else {
 669                 PyObject *t = get_sample_value_as_tuple(&sample->read.one);
 670                 PyList_SET_ITEM(values, 0, t);
 671         }
 672         pydict_set_item_string_decref(dict_sample, "values", values);
 673 }
 674
 675 static void set_sample_datasrc_in_dict(PyObject *dict,
 676                                        struct perf_sample *sample)
 677 {
 678         struct mem_info mi = { .data_src.val = sample->data_src };
 679         char decode[100];
 680
 681         pydict_set_item_string_decref(dict, "datasrc",
 682                         PyLong_FromUnsignedLongLong(sample->data_src));
 683
 684         perf_script__meminfo_scnprintf(decode, 100, &mi);
 685
 686         pydict_set_item_string_decref(dict, "datasrc_decode",
 687                         _PyUnicode_FromString(decode));
 688 }
 689
 690 static int regs_map(struct regs_dump *regs, uint64_t mask, char *bf, int size)
 691 {
 692         unsigned int i = 0, r;
 693         int printed = 0;
 694
 695         bf[0] = 0;
 696
 697         if (!regs || !regs->regs)
 698                 return 0;
 699
 700         for_each_set_bit(r, (unsigned long *) &mask, sizeof(mask) * 8) {
 701                 u64 val = regs->regs[i++];
 702
 703                 printed += scnprintf(bf + printed, size - printed,
 704                                      "%5s:0x%" PRIx64 " ",
 705                                      perf_reg_name(r), val);
 706         }
 707
 708         return printed;
 709 }
 710
 711 static void set_regs_in_dict(PyObject *dict,
 712                              struct perf_sample *sample,
 713                              struct evsel *evsel)
 714 {
 715         struct perf_event_attr *attr = &evsel->core.attr;
 716         char bf[512];
 717
 718         regs_map(&sample->intr_regs, attr->sample_regs_intr, bf, sizeof(bf));
 719
 720         pydict_set_item_string_decref(dict, "iregs",
 721                         _PyUnicode_FromString(bf));
 722
 723         regs_map(&sample->user_regs, attr->sample_regs_user, bf, sizeof(bf));
 724
 725         pydict_set_item_string_decref(dict, "uregs",
 726                         _PyUnicode_FromString(bf));
 727 }
 728
 729 static void set_sym_in_dict(PyObject *dict, struct addr_location *al,
 730                             const char *dso_field, const char *sym_field,
 731                             const char *symoff_field)
 732 {
 733         if (al->map) {
 734                 pydict_set_item_string_decref(dict, dso_field,
 735                         _PyUnicode_FromString(al->map->dso->name));
 736         }
 737         if (al->sym) {
 738                 pydict_set_item_string_decref(dict, sym_field,
 739                         _PyUnicode_FromString(al->sym->name));
 740                 pydict_set_item_string_decref(dict, symoff_field,
 741                         PyLong_FromUnsignedLong(get_offset(al->sym, al)));
 742         }
 743 }
 744
 745 static void set_sample_flags(PyObject *dict, u32 flags)
 746 {
 747         const char *ch = PERF_IP_FLAG_CHARS;
 748         char *p, str[33];
 749
 750         for (p = str; *ch; ch++, flags >>= 1) {
 751                 if (flags & 1)
 752                         *p++ = *ch;
 753         }
 754         *p = 0;
 755         pydict_set_item_string_decref(dict, "flags", _PyUnicode_FromString(str));
 756 }
 757
 758 static void python_process_sample_flags(struct perf_sample *sample, PyObject *dict_sample)
 759 {
 760         char flags_disp[SAMPLE_FLAGS_BUF_SIZE];
 761
 762         set_sample_flags(dict_sample, sample->flags);
 763         perf_sample__sprintf_flags(sample->flags, flags_disp, sizeof(flags_disp));
 764         pydict_set_item_string_decref(dict_sample, "flags_disp",
 765                 _PyUnicode_FromString(flags_disp));
 766 }
 767
 768 static PyObject *get_perf_sample_dict(struct perf_sample *sample,
 769                                          struct evsel *evsel,
 770                                          struct addr_location *al,
 771                                          struct addr_location *addr_al,
 772                                          PyObject *callchain)
 773 {
 774         PyObject *dict, *dict_sample, *brstack, *brstacksym;
 775
 776         dict = PyDict_New();
 777         if (!dict)
 778                 Py_FatalError("couldn't create Python dictionary");
 779
 780         dict_sample = PyDict_New();
 781         if (!dict_sample)
 782                 Py_FatalError("couldn't create Python dictionary");
 783
 784         pydict_set_item_string_decref(dict, "ev_name", _PyUnicode_FromString(evsel__name(evsel)));
 785         pydict_set_item_string_decref(dict, "attr", _PyBytes_FromStringAndSize((const char *)&evsel->core.attr, sizeof(evsel->core.attr)));
 786
 787         pydict_set_item_string_decref(dict_sample, "pid",
 788                         _PyLong_FromLong(sample->pid));
 789         pydict_set_item_string_decref(dict_sample, "tid",
 790                         _PyLong_FromLong(sample->tid));
 791         pydict_set_item_string_decref(dict_sample, "cpu",
 792                         _PyLong_FromLong(sample->cpu));
 793         pydict_set_item_string_decref(dict_sample, "ip",
 794                         PyLong_FromUnsignedLongLong(sample->ip));
 795         pydict_set_item_string_decref(dict_sample, "time",
 796                         PyLong_FromUnsignedLongLong(sample->time));
 797         pydict_set_item_string_decref(dict_sample, "period",
 798                         PyLong_FromUnsignedLongLong(sample->period));
 799         pydict_set_item_string_decref(dict_sample, "phys_addr",
 800                         PyLong_FromUnsignedLongLong(sample->phys_addr));
 801         pydict_set_item_string_decref(dict_sample, "addr",
 802                         PyLong_FromUnsignedLongLong(sample->addr));
 803         set_sample_read_in_dict(dict_sample, sample, evsel);
 804         pydict_set_item_string_decref(dict_sample, "weight",
 805                         PyLong_FromUnsignedLongLong(sample->weight));
 806         pydict_set_item_string_decref(dict_sample, "transaction",
 807                         PyLong_FromUnsignedLongLong(sample->transaction));
 808         set_sample_datasrc_in_dict(dict_sample, sample);
 809         pydict_set_item_string_decref(dict, "sample", dict_sample);
 810
 811         pydict_set_item_string_decref(dict, "raw_buf", _PyBytes_FromStringAndSize(
 812                         (const char *)sample->raw_data, sample->raw_size));
 813         pydict_set_item_string_decref(dict, "comm",
 814                         _PyUnicode_FromString(thread__comm_str(al->thread)));
 815         set_sym_in_dict(dict, al, "dso", "symbol", "symoff");
 816
 817         pydict_set_item_string_decref(dict, "callchain", callchain);
 818
 819         brstack = python_process_brstack(sample, al->thread);
 820         pydict_set_item_string_decref(dict, "brstack", brstack);
 821
 822         brstacksym = python_process_brstacksym(sample, al->thread);
 823         pydict_set_item_string_decref(dict, "brstacksym", brstacksym);
 824
 825         pydict_set_item_string_decref(dict_sample, "cpumode",
 826                         _PyLong_FromLong((unsigned long)sample->cpumode));
 827
 828         if (addr_al) {
 829                 pydict_set_item_string_decref(dict_sample, "addr_correlates_sym",
 830                         PyBool_FromLong(1));
 831                 set_sym_in_dict(dict_sample, addr_al, "addr_dso", "addr_symbol", "addr_symoff");
 832         }
 833
 834         if (sample->flags)
 835                 python_process_sample_flags(sample, dict_sample);
 836
 837         /* Instructions per cycle (IPC) */
 838         if (sample->insn_cnt && sample->cyc_cnt) {
 839                 pydict_set_item_string_decref(dict_sample, "insn_cnt",
 840                         PyLong_FromUnsignedLongLong(sample->insn_cnt));
 841                 pydict_set_item_string_decref(dict_sample, "cyc_cnt",
 842                         PyLong_FromUnsignedLongLong(sample->cyc_cnt));
 843         }
 844
 845         set_regs_in_dict(dict, sample, evsel);
 846
 847         return dict;
 848 }
 849
 850 static void python_process_tracepoint(struct perf_sample *sample,
 851                                       struct evsel *evsel,
 852                                       struct addr_location *al,
 853                                       struct addr_location *addr_al)
 854 {
 855         struct tep_event *event = evsel->tp_format;
 856         PyObject *handler, *context, *t, *obj = NULL, *callchain;
 857         PyObject *dict = NULL, *all_entries_dict = NULL;
 858         static char handler_name[256];
 859         struct tep_format_field *field;
 860         unsigned long s, ns;
 861         unsigned n = 0;
 862         int pid;
 863         int cpu = sample->cpu;
 864         void *data = sample->raw_data;
 865         unsigned long long nsecs = sample->time;
 866         const char *comm = thread__comm_str(al->thread);
 867         const char *default_handler_name = "trace_unhandled";
 868
 869         if (!event) {
 870                 snprintf(handler_name, sizeof(handler_name),
 871                          "ug! no event found for type %" PRIu64, (u64)evsel->core.attr.config);
 872                 Py_FatalError(handler_name);
 873         }
 874
 875         pid = raw_field_value(event, "common_pid", data);
 876
 877         sprintf(handler_name, "%s__%s", event->system, event->name);
 878
 879         if (!test_and_set_bit(event->id, events_defined))
 880                 define_event_symbols(event, handler_name, event->print_fmt.args);
 881
 882         handler = get_handler(handler_name);
 883         if (!handler) {
 884                 handler = get_handler(default_handler_name);
 885                 if (!handler)
 886                         return;
 887                 dict = PyDict_New();
 888                 if (!dict)
 889                         Py_FatalError("couldn't create Python dict");
 890         }
 891
 892         t = PyTuple_New(MAX_FIELDS);
 893         if (!t)
 894                 Py_FatalError("couldn't create Python tuple");
 895
 896
 897         s = nsecs / NSEC_PER_SEC;
 898         ns = nsecs - s * NSEC_PER_SEC;
 899
 900         context = _PyCapsule_New(scripting_context, NULL, NULL);
 901
 902         PyTuple_SetItem(t, n++, _PyUnicode_FromString(handler_name));
 903         PyTuple_SetItem(t, n++, context);
 904
 905         /* ip unwinding */
 906         callchain = python_process_callchain(sample, evsel, al);
 907         /* Need an additional reference for the perf_sample dict */
 908         Py_INCREF(callchain);
 909
 910         if (!dict) {
 911                 PyTuple_SetItem(t, n++, _PyLong_FromLong(cpu));
 912                 PyTuple_SetItem(t, n++, _PyLong_FromLong(s));
 913                 PyTuple_SetItem(t, n++, _PyLong_FromLong(ns));
 914                 PyTuple_SetItem(t, n++, _PyLong_FromLong(pid));
 915                 PyTuple_SetItem(t, n++, _PyUnicode_FromString(comm));
 916                 PyTuple_SetItem(t, n++, callchain);
 917         } else {
 918                 pydict_set_item_string_decref(dict, "common_cpu", _PyLong_FromLong(cpu));
 919                 pydict_set_item_string_decref(dict, "common_s", _PyLong_FromLong(s));
 920                 pydict_set_item_string_decref(dict, "common_ns", _PyLong_FromLong(ns));
 921                 pydict_set_item_string_decref(dict, "common_pid", _PyLong_FromLong(pid));
 922                 pydict_set_item_string_decref(dict, "common_comm", _PyUnicode_FromString(comm));
 923                 pydict_set_item_string_decref(dict, "common_callchain", callchain);
 924         }
 925         for (field = event->format.fields; field; field = field->next) {
 926                 unsigned int offset, len;
 927                 unsigned long long val;
 928
 929                 if (field->flags & TEP_FIELD_IS_ARRAY) {
 930                         offset = field->offset;
 931                         len    = field->size;
 932                         if (field->flags & TEP_FIELD_IS_DYNAMIC) {
 933                                 val     = tep_read_number(scripting_context->pevent,
 934                                                           data + offset, len);
 935                                 offset  = val;
 936                                 len     = offset >> 16;
 937                                 offset &= 0xffff;
 938                         }
 939                         if (field->flags & TEP_FIELD_IS_STRING &&
 940                             is_printable_array(data + offset, len)) {
 941                                 obj = _PyUnicode_FromString((char *) data + offset);
 942                         } else {
 943                                 obj = PyByteArray_FromStringAndSize((const char *) data + offset, len);
 944                                 field->flags &= ~TEP_FIELD_IS_STRING;
 945                         }
 946                 } else { /* FIELD_IS_NUMERIC */
 947                         obj = get_field_numeric_entry(event, field, data);
 948                 }
 949                 if (!dict)
 950                         PyTuple_SetItem(t, n++, obj);
 951                 else
 952                         pydict_set_item_string_decref(dict, field->name, obj);
 953
 954         }
 955
 956         if (dict)
 957                 PyTuple_SetItem(t, n++, dict);
 958
 959         if (get_argument_count(handler) == (int) n + 1) {
 960                 all_entries_dict = get_perf_sample_dict(sample, evsel, al, addr_al,
 961                         callchain);
 962                 PyTuple_SetItem(t, n++, all_entries_dict);
 963         } else {
 964                 Py_DECREF(callchain);
 965         }
 966
 967         if (_PyTuple_Resize(&t, n) == -1)
 968                 Py_FatalError("error resizing Python tuple");
 969
 970         if (!dict)
 971                 call_object(handler, t, handler_name);
 972         else
 973                 call_object(handler, t, default_handler_name);
 974
 975         Py_DECREF(t);
 976 }
 977
 978 static PyObject *tuple_new(unsigned int sz)
 979 {
 980         PyObject *t;
 981
 982         t = PyTuple_New(sz);
 983         if (!t)
 984                 Py_FatalError("couldn't create Python tuple");
 985         return t;
 986 }
 987
 988 static int tuple_set_s64(PyObject *t, unsigned int pos, s64 val)
 989 {
 990 #if BITS_PER_LONG == 64
 991         return PyTuple_SetItem(t, pos, _PyLong_FromLong(val));
 992 #endif
 993 #if BITS_PER_LONG == 32
 994         return PyTuple_SetItem(t, pos, PyLong_FromLongLong(val));
 995 #endif
 996 }
 997
 998 /*
 999  * Databases support only signed 64-bit numbers, so even though we are
1000  * exporting a u64, it must be as s64.
1001  */
1002 #define tuple_set_d64 tuple_set_s64
1003
1004 static int tuple_set_u64(PyObject *t, unsigned int pos, u64 val)
1005 {
1006 #if BITS_PER_LONG == 64
1007         return PyTuple_SetItem(t, pos, PyLong_FromUnsignedLong(val));
1008 #endif
1009 #if BITS_PER_LONG == 32
1010         return PyTuple_SetItem(t, pos, PyLong_FromUnsignedLongLong(val));
1011 #endif
1012 }
1013
1014 static int tuple_set_u32(PyObject *t, unsigned int pos, u32 val)
1015 {
1016         return PyTuple_SetItem(t, pos, PyLong_FromUnsignedLong(val));
1017 }
1018
1019 static int tuple_set_s32(PyObject *t, unsigned int pos, s32 val)
1020 {
1021         return PyTuple_SetItem(t, pos, _PyLong_FromLong(val));
1022 }
1023
1024 static int tuple_set_bool(PyObject *t, unsigned int pos, bool val)
1025 {
1026         return PyTuple_SetItem(t, pos, PyBool_FromLong(val));
1027 }
1028
1029 static int tuple_set_string(PyObject *t, unsigned int pos, const char *s)
1030 {
1031         return PyTuple_SetItem(t, pos, _PyUnicode_FromString(s));
1032 }
1033
1034 static int tuple_set_bytes(PyObject *t, unsigned int pos, void *bytes,
1035                            unsigned int sz)
1036 {
1037         return PyTuple_SetItem(t, pos, _PyBytes_FromStringAndSize(bytes, sz));
1038 }
1039
1040 static int python_export_evsel(struct db_export *dbe, struct evsel *evsel)
1041 {
1042         struct tables *tables = container_of(dbe, struct tables, dbe);
1043         PyObject *t;
1044
1045         t = tuple_new(2);
1046
1047         tuple_set_d64(t, 0, evsel->db_id);
1048         tuple_set_string(t, 1, evsel__name(evsel));
1049
1050         call_object(tables->evsel_handler, t, "evsel_table");
1051
1052         Py_DECREF(t);
1053
1054         return 0;
1055 }
1056
1057 static int python_export_machine(struct db_export *dbe,
1058                                  struct machine *machine)
1059 {
1060         struct tables *tables = container_of(dbe, struct tables, dbe);
1061         PyObject *t;
1062
1063         t = tuple_new(3);
1064
1065         tuple_set_d64(t, 0, machine->db_id);
1066         tuple_set_s32(t, 1, machine->pid);
1067         tuple_set_string(t, 2, machine->root_dir ? machine->root_dir : "");
1068
1069         call_object(tables->machine_handler, t, "machine_table");
1070
1071         Py_DECREF(t);
1072
1073         return 0;
1074 }
1075
1076 static int python_export_thread(struct db_export *dbe, struct thread *thread,
1077                                 u64 main_thread_db_id, struct machine *machine)
1078 {
1079         struct tables *tables = container_of(dbe, struct tables, dbe);
1080         PyObject *t;
1081
1082         t = tuple_new(5);
1083
1084         tuple_set_d64(t, 0, thread->db_id);
1085         tuple_set_d64(t, 1, machine->db_id);
1086         tuple_set_d64(t, 2, main_thread_db_id);
1087         tuple_set_s32(t, 3, thread->pid_);
1088         tuple_set_s32(t, 4, thread->tid);
1089
1090         call_object(tables->thread_handler, t, "thread_table");
1091
1092         Py_DECREF(t);
1093
1094         return 0;
1095 }
1096
1097 static int python_export_comm(struct db_export *dbe, struct comm *comm,
1098                               struct thread *thread)
1099 {
1100         struct tables *tables = container_of(dbe, struct tables, dbe);
1101         PyObject *t;
1102
1103         t = tuple_new(5);
1104
1105         tuple_set_d64(t, 0, comm->db_id);
1106         tuple_set_string(t, 1, comm__str(comm));
1107         tuple_set_d64(t, 2, thread->db_id);
1108         tuple_set_d64(t, 3, comm->start);
1109         tuple_set_s32(t, 4, comm->exec);
1110
1111         call_object(tables->comm_handler, t, "comm_table");
1112
1113         Py_DECREF(t);
1114
1115         return 0;
1116 }
1117
1118 static int python_export_comm_thread(struct db_export *dbe, u64 db_id,
1119                                      struct comm *comm, struct thread *thread)
1120 {
1121         struct tables *tables = container_of(dbe, struct tables, dbe);
1122         PyObject *t;
1123
1124         t = tuple_new(3);
1125
1126         tuple_set_d64(t, 0, db_id);
1127         tuple_set_d64(t, 1, comm->db_id);
1128         tuple_set_d64(t, 2, thread->db_id);
1129
1130         call_object(tables->comm_thread_handler, t, "comm_thread_table");
1131
1132         Py_DECREF(t);
1133
1134         return 0;
1135 }
1136
1137 static int python_export_dso(struct db_export *dbe, struct dso *dso,
1138                              struct machine *machine)
1139 {
1140         struct tables *tables = container_of(dbe, struct tables, dbe);
1141         char sbuild_id[SBUILD_ID_SIZE];
1142         PyObject *t;
1143
1144         build_id__sprintf(&dso->bid, sbuild_id);
1145
1146         t = tuple_new(5);
1147
1148         tuple_set_d64(t, 0, dso->db_id);
1149         tuple_set_d64(t, 1, machine->db_id);
1150         tuple_set_string(t, 2, dso->short_name);
1151         tuple_set_string(t, 3, dso->long_name);
1152         tuple_set_string(t, 4, sbuild_id);
1153
1154         call_object(tables->dso_handler, t, "dso_table");
1155
1156         Py_DECREF(t);
1157
1158         return 0;
1159 }
1160
1161 static int python_export_symbol(struct db_export *dbe, struct symbol *sym,
1162                                 struct dso *dso)
1163 {
1164         struct tables *tables = container_of(dbe, struct tables, dbe);
1165         u64 *sym_db_id = symbol__priv(sym);
1166         PyObject *t;
1167
1168         t = tuple_new(6);
1169
1170         tuple_set_d64(t, 0, *sym_db_id);
1171         tuple_set_d64(t, 1, dso->db_id);
1172         tuple_set_d64(t, 2, sym->start);
1173         tuple_set_d64(t, 3, sym->end);
1174         tuple_set_s32(t, 4, sym->binding);
1175         tuple_set_string(t, 5, sym->name);
1176
1177         call_object(tables->symbol_handler, t, "symbol_table");
1178
1179         Py_DECREF(t);
1180
1181         return 0;
1182 }
1183
1184 static int python_export_branch_type(struct db_export *dbe, u32 branch_type,
1185                                      const char *name)
1186 {
1187         struct tables *tables = container_of(dbe, struct tables, dbe);
1188         PyObject *t;
1189
1190         t = tuple_new(2);
1191
1192         tuple_set_s32(t, 0, branch_type);
1193         tuple_set_string(t, 1, name);
1194
1195         call_object(tables->branch_type_handler, t, "branch_type_table");
1196
1197         Py_DECREF(t);
1198
1199         return 0;
1200 }
1201
1202 static void python_export_sample_table(struct db_export *dbe,
1203                                        struct export_sample *es)
1204 {
1205         struct tables *tables = container_of(dbe, struct tables, dbe);
1206         PyObject *t;
1207
1208         t = tuple_new(24);
1209
1210         tuple_set_d64(t, 0, es->db_id);
1211         tuple_set_d64(t, 1, es->evsel->db_id);
1212         tuple_set_d64(t, 2, es->al->maps->machine->db_id);
1213         tuple_set_d64(t, 3, es->al->thread->db_id);
1214         tuple_set_d64(t, 4, es->comm_db_id);
1215         tuple_set_d64(t, 5, es->dso_db_id);
1216         tuple_set_d64(t, 6, es->sym_db_id);
1217         tuple_set_d64(t, 7, es->offset);
1218         tuple_set_d64(t, 8, es->sample->ip);
1219         tuple_set_d64(t, 9, es->sample->time);
1220         tuple_set_s32(t, 10, es->sample->cpu);
1221         tuple_set_d64(t, 11, es->addr_dso_db_id);
1222         tuple_set_d64(t, 12, es->addr_sym_db_id);
1223         tuple_set_d64(t, 13, es->addr_offset);
1224         tuple_set_d64(t, 14, es->sample->addr);
1225         tuple_set_d64(t, 15, es->sample->period);
1226         tuple_set_d64(t, 16, es->sample->weight);
1227         tuple_set_d64(t, 17, es->sample->transaction);
1228         tuple_set_d64(t, 18, es->sample->data_src);
1229         tuple_set_s32(t, 19, es->sample->flags & PERF_BRANCH_MASK);
1230         tuple_set_s32(t, 20, !!(es->sample->flags & PERF_IP_FLAG_IN_TX));
1231         tuple_set_d64(t, 21, es->call_path_id);
1232         tuple_set_d64(t, 22, es->sample->insn_cnt);
1233         tuple_set_d64(t, 23, es->sample->cyc_cnt);
1234
1235         call_object(tables->sample_handler, t, "sample_table");
1236
1237         Py_DECREF(t);
1238 }
1239
1240 static void python_export_synth(struct db_export *dbe, struct export_sample *es)
1241 {
1242         struct tables *tables = container_of(dbe, struct tables, dbe);
1243         PyObject *t;
1244
1245         t = tuple_new(3);
1246
1247         tuple_set_d64(t, 0, es->db_id);
1248         tuple_set_d64(t, 1, es->evsel->core.attr.config);
1249         tuple_set_bytes(t, 2, es->sample->raw_data, es->sample->raw_size);
1250
1251         call_object(tables->synth_handler, t, "synth_data");
1252
1253         Py_DECREF(t);
1254 }
1255
1256 static int python_export_sample(struct db_export *dbe,
1257                                 struct export_sample *es)
1258 {
1259         struct tables *tables = container_of(dbe, struct tables, dbe);
1260
1261         python_export_sample_table(dbe, es);
1262
1263         if (es->evsel->core.attr.type == PERF_TYPE_SYNTH && tables->synth_handler)
1264                 python_export_synth(dbe, es);
1265
1266         return 0;
1267 }
1268
1269 static int python_export_call_path(struct db_export *dbe, struct call_path *cp)
1270 {
1271         struct tables *tables = container_of(dbe, struct tables, dbe);
1272         PyObject *t;
1273         u64 parent_db_id, sym_db_id;
1274
1275         parent_db_id = cp->parent ? cp->parent->db_id : 0;
1276         sym_db_id = cp->sym ? *(u64 *)symbol__priv(cp->sym) : 0;
1277
1278         t = tuple_new(4);
1279
1280         tuple_set_d64(t, 0, cp->db_id);
1281         tuple_set_d64(t, 1, parent_db_id);
1282         tuple_set_d64(t, 2, sym_db_id);
1283         tuple_set_d64(t, 3, cp->ip);
1284
1285         call_object(tables->call_path_handler, t, "call_path_table");
1286
1287         Py_DECREF(t);
1288
1289         return 0;
1290 }
1291
1292 static int python_export_call_return(struct db_export *dbe,
1293                                      struct call_return *cr)
1294 {
1295         struct tables *tables = container_of(dbe, struct tables, dbe);
1296         u64 comm_db_id = cr->comm ? cr->comm->db_id : 0;
1297         PyObject *t;
1298
1299         t = tuple_new(14);
1300
1301         tuple_set_d64(t, 0, cr->db_id);
1302         tuple_set_d64(t, 1, cr->thread->db_id);
1303         tuple_set_d64(t, 2, comm_db_id);
1304         tuple_set_d64(t, 3, cr->cp->db_id);
1305         tuple_set_d64(t, 4, cr->call_time);
1306         tuple_set_d64(t, 5, cr->return_time);
1307         tuple_set_d64(t, 6, cr->branch_count);
1308         tuple_set_d64(t, 7, cr->call_ref);
1309         tuple_set_d64(t, 8, cr->return_ref);
1310         tuple_set_d64(t, 9, cr->cp->parent->db_id);
1311         tuple_set_s32(t, 10, cr->flags);
1312         tuple_set_d64(t, 11, cr->parent_db_id);
1313         tuple_set_d64(t, 12, cr->insn_count);
1314         tuple_set_d64(t, 13, cr->cyc_count);
1315
1316         call_object(tables->call_return_handler, t, "call_return_table");
1317
1318         Py_DECREF(t);
1319
1320         return 0;
1321 }
1322
1323 static int python_export_context_switch(struct db_export *dbe, u64 db_id,
1324                                         struct machine *machine,
1325                                         struct perf_sample *sample,
1326                                         u64 th_out_id, u64 comm_out_id,
1327                                         u64 th_in_id, u64 comm_in_id, int flags)
1328 {
1329         struct tables *tables = container_of(dbe, struct tables, dbe);
1330         PyObject *t;
1331
1332         t = tuple_new(9);
1333
1334         tuple_set_d64(t, 0, db_id);
1335         tuple_set_d64(t, 1, machine->db_id);
1336         tuple_set_d64(t, 2, sample->time);
1337         tuple_set_s32(t, 3, sample->cpu);
1338         tuple_set_d64(t, 4, th_out_id);
1339         tuple_set_d64(t, 5, comm_out_id);
1340         tuple_set_d64(t, 6, th_in_id);
1341         tuple_set_d64(t, 7, comm_in_id);
1342         tuple_set_s32(t, 8, flags);
1343
1344         call_object(tables->context_switch_handler, t, "context_switch");
1345
1346         Py_DECREF(t);
1347
1348         return 0;
1349 }
1350
1351 static int python_process_call_return(struct call_return *cr, u64 *parent_db_id,
1352                                       void *data)
1353 {
1354         struct db_export *dbe = data;
1355
1356         return db_export__call_return(dbe, cr, parent_db_id);
1357 }
1358
1359 static void python_process_general_event(struct perf_sample *sample,
1360                                          struct evsel *evsel,
1361                                          struct addr_location *al,
1362                                          struct addr_location *addr_al)
1363 {
1364         PyObject *handler, *t, *dict, *callchain;
1365         static char handler_name[64];
1366         unsigned n = 0;
1367
1368         snprintf(handler_name, sizeof(handler_name), "%s", "process_event");
1369
1370         handler = get_handler(handler_name);
1371         if (!handler)
1372                 return;
1373
1374         /*
1375          * Use the MAX_FIELDS to make the function expandable, though
1376          * currently there is only one item for the tuple.
1377          */
1378         t = PyTuple_New(MAX_FIELDS);
1379         if (!t)
1380                 Py_FatalError("couldn't create Python tuple");
1381
1382         /* ip unwinding */
1383         callchain = python_process_callchain(sample, evsel, al);
1384         dict = get_perf_sample_dict(sample, evsel, al, addr_al, callchain);
1385
1386         PyTuple_SetItem(t, n++, dict);
1387         if (_PyTuple_Resize(&t, n) == -1)
1388                 Py_FatalError("error resizing Python tuple");
1389
1390         call_object(handler, t, handler_name);
1391
1392         Py_DECREF(t);
1393 }
1394
1395 static void python_process_event(union perf_event *event,
1396                                  struct perf_sample *sample,
1397                                  struct evsel *evsel,
1398                                  struct addr_location *al,
1399                                  struct addr_location *addr_al)
1400 {
1401         struct tables *tables = &tables_global;
1402
1403         scripting_context__update(scripting_context, event, sample, evsel, al, addr_al);
1404
1405         switch (evsel->core.attr.type) {
1406         case PERF_TYPE_TRACEPOINT:
1407                 python_process_tracepoint(sample, evsel, al, addr_al);
1408                 break;
1409         /* Reserve for future process_hw/sw/raw APIs */
1410         default:
1411                 if (tables->db_export_mode)
1412                         db_export__sample(&tables->dbe, event, sample, evsel, al, addr_al);
1413                 else
1414                         python_process_general_event(sample, evsel, al, addr_al);
1415         }
1416 }
1417
1418 static void python_do_process_switch(union perf_event *event,
1419                                      struct perf_sample *sample,
1420                                      struct machine *machine)
1421 {
1422         const char *handler_name = "context_switch";
1423         bool out = event->header.misc & PERF_RECORD_MISC_SWITCH_OUT;
1424         bool out_preempt = out && (event->header.misc & PERF_RECORD_MISC_SWITCH_OUT_PREEMPT);
1425         pid_t np_pid = -1, np_tid = -1;
1426         PyObject *handler, *t;
1427
1428         handler = get_handler(handler_name);
1429         if (!handler)
1430                 return;
1431
1432         if (event->header.type == PERF_RECORD_SWITCH_CPU_WIDE) {
1433                 np_pid = event->context_switch.next_prev_pid;
1434                 np_tid = event->context_switch.next_prev_tid;
1435         }
1436
1437         t = tuple_new(9);
1438         if (!t)
1439                 return;
1440
1441         tuple_set_u64(t, 0, sample->time);
1442         tuple_set_s32(t, 1, sample->cpu);
1443         tuple_set_s32(t, 2, sample->pid);
1444         tuple_set_s32(t, 3, sample->tid);
1445         tuple_set_s32(t, 4, np_pid);
1446         tuple_set_s32(t, 5, np_tid);
1447         tuple_set_s32(t, 6, machine->pid);
1448         tuple_set_bool(t, 7, out);
1449         tuple_set_bool(t, 8, out_preempt);
1450
1451         call_object(handler, t, handler_name);
1452
1453         Py_DECREF(t);
1454 }
1455
1456 static void python_process_switch(union perf_event *event,
1457                                   struct perf_sample *sample,
1458                                   struct machine *machine)
1459 {
1460         struct tables *tables = &tables_global;
1461
1462         if (tables->db_export_mode)
1463                 db_export__switch(&tables->dbe, event, sample, machine);
1464         else
1465                 python_do_process_switch(event, sample, machine);
1466 }
1467
1468 static void python_process_auxtrace_error(struct perf_session *session __maybe_unused,
1469                                           union perf_event *event)
1470 {
1471         struct perf_record_auxtrace_error *e = &event->auxtrace_error;
1472         u8 cpumode = e->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
1473         const char *handler_name = "auxtrace_error";
1474         unsigned long long tm = e->time;
1475         const char *msg = e->msg;
1476         PyObject *handler, *t;
1477
1478         handler = get_handler(handler_name);
1479         if (!handler)
1480                 return;
1481
1482         if (!e->fmt) {
1483                 tm = 0;
1484                 msg = (const char *)&e->time;
1485         }
1486
1487         t = tuple_new(9);
1488
1489         tuple_set_u32(t, 0, e->type);
1490         tuple_set_u32(t, 1, e->code);
1491         tuple_set_s32(t, 2, e->cpu);
1492         tuple_set_s32(t, 3, e->pid);
1493         tuple_set_s32(t, 4, e->tid);
1494         tuple_set_u64(t, 5, e->ip);
1495         tuple_set_u64(t, 6, tm);
1496         tuple_set_string(t, 7, msg);
1497         tuple_set_u32(t, 8, cpumode);
1498
1499         call_object(handler, t, handler_name);
1500
1501         Py_DECREF(t);
1502 }
1503
1504 static void get_handler_name(char *str, size_t size,
1505                              struct evsel *evsel)
1506 {
1507         char *p = str;
1508
1509         scnprintf(str, size, "stat__%s", evsel__name(evsel));
1510
1511         while ((p = strchr(p, ':'))) {
1512                 *p = '_';
1513                 p++;
1514         }
1515 }
1516
1517 static void
1518 process_stat(struct evsel *counter, int cpu, int thread, u64 tstamp,
1519              struct perf_counts_values *count)
1520 {
1521         PyObject *handler, *t;
1522         static char handler_name[256];
1523         int n = 0;
1524
1525         t = PyTuple_New(MAX_FIELDS);
1526         if (!t)
1527                 Py_FatalError("couldn't create Python tuple");
1528
1529         get_handler_name(handler_name, sizeof(handler_name),
1530                          counter);
1531
1532         handler = get_handler(handler_name);
1533         if (!handler) {
1534                 pr_debug("can't find python handler %s\n", handler_name);
1535                 return;
1536         }
1537
1538         PyTuple_SetItem(t, n++, _PyLong_FromLong(cpu));
1539         PyTuple_SetItem(t, n++, _PyLong_FromLong(thread));
1540
1541         tuple_set_u64(t, n++, tstamp);
1542         tuple_set_u64(t, n++, count->val);
1543         tuple_set_u64(t, n++, count->ena);
1544         tuple_set_u64(t, n++, count->run);
1545
1546         if (_PyTuple_Resize(&t, n) == -1)
1547                 Py_FatalError("error resizing Python tuple");
1548
1549         call_object(handler, t, handler_name);
1550
1551         Py_DECREF(t);
1552 }
1553
1554 static void python_process_stat(struct perf_stat_config *config,
1555                                 struct evsel *counter, u64 tstamp)
1556 {
1557         struct perf_thread_map *threads = counter->core.threads;
1558         struct perf_cpu_map *cpus = counter->core.cpus;
1559         int cpu, thread;
1560
1561         if (config->aggr_mode == AGGR_GLOBAL) {
1562                 process_stat(counter, -1, -1, tstamp,
1563                              &counter->counts->aggr);
1564                 return;
1565         }
1566
1567         for (thread = 0; thread < threads->nr; thread++) {
1568                 for (cpu = 0; cpu < cpus->nr; cpu++) {
1569                         process_stat(counter, cpus->map[cpu],
1570                                      perf_thread_map__pid(threads, thread), tstamp,
1571                                      perf_counts(counter->counts, cpu, thread));
1572                 }
1573         }
1574 }
1575
1576 static void python_process_stat_interval(u64 tstamp)
1577 {
1578         PyObject *handler, *t;
1579         static const char handler_name[] = "stat__interval";
1580         int n = 0;
1581
1582         t = PyTuple_New(MAX_FIELDS);
1583         if (!t)
1584                 Py_FatalError("couldn't create Python tuple");
1585
1586         handler = get_handler(handler_name);
1587         if (!handler) {
1588                 pr_debug("can't find python handler %s\n", handler_name);
1589                 return;
1590         }
1591
1592         tuple_set_u64(t, n++, tstamp);
1593
1594         if (_PyTuple_Resize(&t, n) == -1)
1595                 Py_FatalError("error resizing Python tuple");
1596
1597         call_object(handler, t, handler_name);
1598
1599         Py_DECREF(t);
1600 }
1601
1602 static int perf_script_context_init(void)
1603 {
1604         PyObject *perf_script_context;
1605         PyObject *perf_trace_context;
1606         PyObject *dict;
1607         int ret;
1608
1609         perf_trace_context = PyImport_AddModule("perf_trace_context");
1610         if (!perf_trace_context)
1611                 return -1;
1612         dict = PyModule_GetDict(perf_trace_context);
1613         if (!dict)
1614                 return -1;
1615
1616         perf_script_context = _PyCapsule_New(scripting_context, NULL, NULL);
1617         if (!perf_script_context)
1618                 return -1;
1619
1620         ret = PyDict_SetItemString(dict, "perf_script_context", perf_script_context);
1621         if (!ret)
1622                 ret = PyDict_SetItemString(main_dict, "perf_script_context", perf_script_context);
1623         Py_DECREF(perf_script_context);
1624         return ret;
1625 }
1626
1627 static int run_start_sub(void)
1628 {
1629         main_module = PyImport_AddModule("__main__");
1630         if (main_module == NULL)
1631                 return -1;
1632         Py_INCREF(main_module);
1633
1634         main_dict = PyModule_GetDict(main_module);
1635         if (main_dict == NULL)
1636                 goto error;
1637         Py_INCREF(main_dict);
1638
1639         if (perf_script_context_init())
1640                 goto error;
1641
1642         try_call_object("trace_begin", NULL);
1643
1644         return 0;
1645
1646 error:
1647         Py_XDECREF(main_dict);
1648         Py_XDECREF(main_module);
1649         return -1;
1650 }
1651
1652 #define SET_TABLE_HANDLER_(name, handler_name, table_name) do {         \
1653         tables->handler_name = get_handler(#table_name);                \
1654         if (tables->handler_name)                                       \
1655                 tables->dbe.export_ ## name = python_export_ ## name;   \
1656 } while (0)
1657
1658 #define SET_TABLE_HANDLER(name) \
1659         SET_TABLE_HANDLER_(name, name ## _handler, name ## _table)
1660
1661 static void set_table_handlers(struct tables *tables)
1662 {
1663         const char *perf_db_export_mode = "perf_db_export_mode";
1664         const char *perf_db_export_calls = "perf_db_export_calls";
1665         const char *perf_db_export_callchains = "perf_db_export_callchains";
1666         PyObject *db_export_mode, *db_export_calls, *db_export_callchains;
1667         bool export_calls = false;
1668         bool export_callchains = false;
1669         int ret;
1670
1671         memset(tables, 0, sizeof(struct tables));
1672         if (db_export__init(&tables->dbe))
1673                 Py_FatalError("failed to initialize export");
1674
1675         db_export_mode = PyDict_GetItemString(main_dict, perf_db_export_mode);
1676         if (!db_export_mode)
1677                 return;
1678
1679         ret = PyObject_IsTrue(db_export_mode);
1680         if (ret == -1)
1681                 handler_call_die(perf_db_export_mode);
1682         if (!ret)
1683                 return;
1684
1685         /* handle export calls */
1686         tables->dbe.crp = NULL;
1687         db_export_calls = PyDict_GetItemString(main_dict, perf_db_export_calls);
1688         if (db_export_calls) {
1689                 ret = PyObject_IsTrue(db_export_calls);
1690                 if (ret == -1)
1691                         handler_call_die(perf_db_export_calls);
1692                 export_calls = !!ret;
1693         }
1694
1695         if (export_calls) {
1696                 tables->dbe.crp =
1697                         call_return_processor__new(python_process_call_return,
1698                                                    &tables->dbe);
1699                 if (!tables->dbe.crp)
1700                         Py_FatalError("failed to create calls processor");
1701         }
1702
1703         /* handle export callchains */
1704         tables->dbe.cpr = NULL;
1705         db_export_callchains = PyDict_GetItemString(main_dict,
1706                                                     perf_db_export_callchains);
1707         if (db_export_callchains) {
1708                 ret = PyObject_IsTrue(db_export_callchains);
1709                 if (ret == -1)
1710                         handler_call_die(perf_db_export_callchains);
1711                 export_callchains = !!ret;
1712         }
1713
1714         if (export_callchains) {
1715                 /*
1716                  * Attempt to use the call path root from the call return
1717                  * processor, if the call return processor is in use. Otherwise,
1718                  * we allocate a new call path root. This prevents exporting
1719                  * duplicate call path ids when both are in use simultaneously.
1720                  */
1721                 if (tables->dbe.crp)
1722                         tables->dbe.cpr = tables->dbe.crp->cpr;
1723                 else
1724                         tables->dbe.cpr = call_path_root__new();
1725
1726                 if (!tables->dbe.cpr)
1727                         Py_FatalError("failed to create call path root");
1728         }
1729
1730         tables->db_export_mode = true;
1731         /*
1732          * Reserve per symbol space for symbol->db_id via symbol__priv()
1733          */
1734         symbol_conf.priv_size = sizeof(u64);
1735
1736         SET_TABLE_HANDLER(evsel);
1737         SET_TABLE_HANDLER(machine);
1738         SET_TABLE_HANDLER(thread);
1739         SET_TABLE_HANDLER(comm);
1740         SET_TABLE_HANDLER(comm_thread);
1741         SET_TABLE_HANDLER(dso);
1742         SET_TABLE_HANDLER(symbol);
1743         SET_TABLE_HANDLER(branch_type);
1744         SET_TABLE_HANDLER(sample);
1745         SET_TABLE_HANDLER(call_path);
1746         SET_TABLE_HANDLER(call_return);
1747         SET_TABLE_HANDLER(context_switch);
1748
1749         /*
1750          * Synthesized events are samples but with architecture-specific data
1751          * stored in sample->raw_data. They are exported via
1752          * python_export_sample() and consequently do not need a separate export
1753          * callback.
1754          */
1755         tables->synth_handler = get_handler("synth_data");
1756 }
1757
1758 #if PY_MAJOR_VERSION < 3
1759 static void _free_command_line(const char **command_line, int num)
1760 {
1761         free(command_line);
1762 }
1763 #else
1764 static void _free_command_line(wchar_t **command_line, int num)
1765 {
1766         int i;
1767         for (i = 0; i < num; i++)
1768                 PyMem_RawFree(command_line[i]);
1769         free(command_line);
1770 }
1771 #endif
1772
1773
1774 /*
1775  * Start trace script
1776  */
1777 static int python_start_script(const char *script, int argc, const char **argv,
1778                                struct perf_session *session)
1779 {
1780         struct tables *tables = &tables_global;
1781 #if PY_MAJOR_VERSION < 3
1782         const char **command_line;
1783 #else
1784         wchar_t **command_line;
1785 #endif
1786         /*
1787          * Use a non-const name variable to cope with python 2.6's
1788          * PyImport_AppendInittab prototype
1789          */
1790         char buf[PATH_MAX], name[19] = "perf_trace_context";
1791         int i, err = 0;
1792         FILE *fp;
1793
1794         scripting_context->session = session;
1795 #if PY_MAJOR_VERSION < 3
1796         command_line = malloc((argc + 1) * sizeof(const char *));
1797         command_line[0] = script;
1798         for (i = 1; i < argc + 1; i++)
1799                 command_line[i] = argv[i - 1];
1800         PyImport_AppendInittab(name, initperf_trace_context);
1801 #else
1802         command_line = malloc((argc + 1) * sizeof(wchar_t *));
1803         command_line[0] = Py_DecodeLocale(script, NULL);
1804         for (i = 1; i < argc + 1; i++)
1805                 command_line[i] = Py_DecodeLocale(argv[i - 1], NULL);
1806         PyImport_AppendInittab(name, PyInit_perf_trace_context);
1807 #endif
1808         Py_Initialize();
1809
1810 #if PY_MAJOR_VERSION < 3
1811         PySys_SetArgv(argc + 1, (char **)command_line);
1812 #else
1813         PySys_SetArgv(argc + 1, command_line);
1814 #endif
1815
1816         fp = fopen(script, "r");
1817         if (!fp) {
1818                 sprintf(buf, "Can't open python script \"%s\"", script);
1819                 perror(buf);
1820                 err = -1;
1821                 goto error;
1822         }
1823
1824         err = PyRun_SimpleFile(fp, script);
1825         if (err) {
1826                 fprintf(stderr, "Error running python script %s\n", script);
1827                 goto error;
1828         }
1829
1830         err = run_start_sub();
1831         if (err) {
1832                 fprintf(stderr, "Error starting python script %s\n", script);
1833                 goto error;
1834         }
1835
1836         set_table_handlers(tables);
1837
1838         if (tables->db_export_mode) {
1839                 err = db_export__branch_types(&tables->dbe);
1840                 if (err)
1841                         goto error;
1842         }
1843
1844         _free_command_line(command_line, argc + 1);
1845
1846         return err;
1847 error:
1848         Py_Finalize();
1849         _free_command_line(command_line, argc + 1);
1850
1851         return err;
1852 }
1853
1854 static int python_flush_script(void)
1855 {
1856         return 0;
1857 }
1858
1859 /*
1860  * Stop trace script
1861  */
1862 static int python_stop_script(void)
1863 {
1864         struct tables *tables = &tables_global;
1865
1866         try_call_object("trace_end", NULL);
1867
1868         db_export__exit(&tables->dbe);
1869
1870         Py_XDECREF(main_dict);
1871         Py_XDECREF(main_module);
1872         Py_Finalize();
1873
1874         return 0;
1875 }
1876
1877 static int python_generate_script(struct tep_handle *pevent, const char *outfile)
1878 {
1879         int i, not_first, count, nr_events;
1880         struct tep_event **all_events;
1881         struct tep_event *event = NULL;
1882         struct tep_format_field *f;
1883         char fname[PATH_MAX];
1884         FILE *ofp;
1885
1886         sprintf(fname, "%s.py", outfile);
1887         ofp = fopen(fname, "w");
1888         if (ofp == NULL) {
1889                 fprintf(stderr, "couldn't open %s\n", fname);
1890                 return -1;
1891         }
1892         fprintf(ofp, "# perf script event handlers, "
1893                 "generated by perf script -g python\n");
1894
1895         fprintf(ofp, "# Licensed under the terms of the GNU GPL"
1896                 " License version 2\n\n");
1897
1898         fprintf(ofp, "# The common_* event handler fields are the most useful "
1899                 "fields common to\n");
1900
1901         fprintf(ofp, "# all events.  They don't necessarily correspond to "
1902                 "the 'common_*' fields\n");
1903
1904         fprintf(ofp, "# in the format files.  Those fields not available as "
1905                 "handler params can\n");
1906
1907         fprintf(ofp, "# be retrieved using Python functions of the form "
1908                 "common_*(context).\n");
1909
1910         fprintf(ofp, "# See the perf-script-python Documentation for the list "
1911                 "of available functions.\n\n");
1912
1913         fprintf(ofp, "from __future__ import print_function\n\n");
1914         fprintf(ofp, "import os\n");
1915         fprintf(ofp, "import sys\n\n");
1916
1917         fprintf(ofp, "sys.path.append(os.environ['PERF_EXEC_PATH'] + \\\n");
1918         fprintf(ofp, "\t'/scripts/python/Perf-Trace-Util/lib/Perf/Trace')\n");
1919         fprintf(ofp, "\nfrom perf_trace_context import *\n");
1920         fprintf(ofp, "from Core import *\n\n\n");
1921
1922         fprintf(ofp, "def trace_begin():\n");
1923         fprintf(ofp, "\tprint(\"in trace_begin\")\n\n");
1924
1925         fprintf(ofp, "def trace_end():\n");
1926         fprintf(ofp, "\tprint(\"in trace_end\")\n\n");
1927
1928         nr_events = tep_get_events_count(pevent);
1929         all_events = tep_list_events(pevent, TEP_EVENT_SORT_ID);
1930
1931         for (i = 0; all_events && i < nr_events; i++) {
1932                 event = all_events[i];
1933                 fprintf(ofp, "def %s__%s(", event->system, event->name);
1934                 fprintf(ofp, "event_name, ");
1935                 fprintf(ofp, "context, ");
1936                 fprintf(ofp, "common_cpu,\n");
1937                 fprintf(ofp, "\tcommon_secs, ");
1938                 fprintf(ofp, "common_nsecs, ");
1939                 fprintf(ofp, "common_pid, ");
1940                 fprintf(ofp, "common_comm,\n\t");
1941                 fprintf(ofp, "common_callchain, ");
1942
1943                 not_first = 0;
1944                 count = 0;
1945
1946                 for (f = event->format.fields; f; f = f->next) {
1947                         if (not_first++)
1948                                 fprintf(ofp, ", ");
1949                         if (++count % 5 == 0)
1950                                 fprintf(ofp, "\n\t");
1951
1952                         fprintf(ofp, "%s", f->name);
1953                 }
1954                 if (not_first++)
1955                         fprintf(ofp, ", ");
1956                 if (++count % 5 == 0)
1957                         fprintf(ofp, "\n\t\t");
1958                 fprintf(ofp, "perf_sample_dict");
1959
1960                 fprintf(ofp, "):\n");
1961
1962                 fprintf(ofp, "\t\tprint_header(event_name, common_cpu, "
1963                         "common_secs, common_nsecs,\n\t\t\t"
1964                         "common_pid, common_comm)\n\n");
1965
1966                 fprintf(ofp, "\t\tprint(\"");
1967
1968                 not_first = 0;
1969                 count = 0;
1970
1971                 for (f = event->format.fields; f; f = f->next) {
1972                         if (not_first++)
1973                                 fprintf(ofp, ", ");
1974                         if (count && count % 3 == 0) {
1975                                 fprintf(ofp, "\" \\\n\t\t\"");
1976                         }
1977                         count++;
1978
1979                         fprintf(ofp, "%s=", f->name);
1980                         if (f->flags & TEP_FIELD_IS_STRING ||
1981                             f->flags & TEP_FIELD_IS_FLAG ||
1982                             f->flags & TEP_FIELD_IS_ARRAY ||
1983                             f->flags & TEP_FIELD_IS_SYMBOLIC)
1984                                 fprintf(ofp, "%%s");
1985                         else if (f->flags & TEP_FIELD_IS_SIGNED)
1986                                 fprintf(ofp, "%%d");
1987                         else
1988                                 fprintf(ofp, "%%u");
1989                 }
1990
1991                 fprintf(ofp, "\" %% \\\n\t\t(");
1992
1993                 not_first = 0;
1994                 count = 0;
1995
1996                 for (f = event->format.fields; f; f = f->next) {
1997                         if (not_first++)
1998                                 fprintf(ofp, ", ");
1999
2000                         if (++count % 5 == 0)
2001                                 fprintf(ofp, "\n\t\t");
2002
2003                         if (f->flags & TEP_FIELD_IS_FLAG) {
2004                                 if ((count - 1) % 5 != 0) {
2005                                         fprintf(ofp, "\n\t\t");
2006                                         count = 4;
2007                                 }
2008                                 fprintf(ofp, "flag_str(\"");
2009                                 fprintf(ofp, "%s__%s\", ", event->system,
2010                                         event->name);
2011                                 fprintf(ofp, "\"%s\", %s)", f->name,
2012                                         f->name);
2013                         } else if (f->flags & TEP_FIELD_IS_SYMBOLIC) {
2014                                 if ((count - 1) % 5 != 0) {
2015                                         fprintf(ofp, "\n\t\t");
2016                                         count = 4;
2017                                 }
2018                                 fprintf(ofp, "symbol_str(\"");
2019                                 fprintf(ofp, "%s__%s\", ", event->system,
2020                                         event->name);
2021                                 fprintf(ofp, "\"%s\", %s)", f->name,
2022                                         f->name);
2023                         } else
2024                                 fprintf(ofp, "%s", f->name);
2025                 }
2026
2027                 fprintf(ofp, "))\n\n");
2028
2029                 fprintf(ofp, "\t\tprint('Sample: {'+"
2030                         "get_dict_as_string(perf_sample_dict['sample'], ', ')+'}')\n\n");
2031
2032                 fprintf(ofp, "\t\tfor node in common_callchain:");
2033                 fprintf(ofp, "\n\t\t\tif 'sym' in node:");
2034                 fprintf(ofp, "\n\t\t\t\tprint(\"\\t[%%x] %%s\" %% (node['ip'], node['sym']['name']))");
2035                 fprintf(ofp, "\n\t\t\telse:");
2036                 fprintf(ofp, "\n\t\t\t\tprint(\"\t[%%x]\" %% (node['ip']))\n\n");
2037                 fprintf(ofp, "\t\tprint()\n\n");
2038
2039         }
2040
2041         fprintf(ofp, "def trace_unhandled(event_name, context, "
2042                 "event_fields_dict, perf_sample_dict):\n");
2043
2044         fprintf(ofp, "\t\tprint(get_dict_as_string(event_fields_dict))\n");
2045         fprintf(ofp, "\t\tprint('Sample: {'+"
2046                 "get_dict_as_string(perf_sample_dict['sample'], ', ')+'}')\n\n");
2047
2048         fprintf(ofp, "def print_header("
2049                 "event_name, cpu, secs, nsecs, pid, comm):\n"
2050                 "\tprint(\"%%-20s %%5u %%05u.%%09u %%8u %%-20s \" %% \\\n\t"
2051                 "(event_name, cpu, secs, nsecs, pid, comm), end=\"\")\n\n");
2052
2053         fprintf(ofp, "def get_dict_as_string(a_dict, delimiter=' '):\n"
2054                 "\treturn delimiter.join"
2055                 "(['%%s=%%s'%%(k,str(v))for k,v in sorted(a_dict.items())])\n");
2056
2057         fclose(ofp);
2058
2059         fprintf(stderr, "generated Python script: %s\n", fname);
2060
2061         return 0;
2062 }
2063
2064 struct scripting_ops python_scripting_ops = {
2065         .name                   = "Python",
2066         .dirname                = "python",
2067         .start_script           = python_start_script,
2068         .flush_script           = python_flush_script,
2069         .stop_script            = python_stop_script,
2070         .process_event          = python_process_event,
2071         .process_switch         = python_process_switch,
2072         .process_auxtrace_error = python_process_auxtrace_error,
2073         .process_stat           = python_process_stat,
2074         .process_stat_interval  = python_process_stat_interval,
2075         .generate_script        = python_generate_script,
2076 };