1 /* 2 * trace-event-python. Feed trace events to an embedded Python interpreter. 3 * 4 * Copyright (C) 2010 Tom Zanussi <[email protected]> 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 #ifdef HAVE_LIBTRACEEVENT 34 #include <event-parse.h> 35 #endif 36 37 #include "../build-id.h" 38 #include "../counts.h" 39 #include "../debug.h" 40 #include "../dso.h" 41 #include "../callchain.h" 42 #include "../env.h" 43 #include "../evsel.h" 44 #include "../event.h" 45 #include "../thread.h" 46 #include "../comm.h" 47 #include "../machine.h" 48 #include "../mem-info.h" 49 #include "../db-export.h" 50 #include "../thread-stack.h" 51 #include "../trace-event.h" 52 #include "../call-path.h" 53 #include "map.h" 54 #include "symbol.h" 55 #include "thread_map.h" 56 #include "print_binary.h" 57 #include "stat.h" 58 #include "mem-events.h" 59 #include "util/perf_regs.h" 60 61 #if PY_MAJOR_VERSION < 3 62 #define _PyUnicode_FromString(arg) \ 63 PyString_FromString(arg) 64 #define _PyUnicode_FromStringAndSize(arg1, arg2) \ 65 PyString_FromStringAndSize((arg1), (arg2)) 66 #define _PyBytes_FromStringAndSize(arg1, arg2) \ 67 PyString_FromStringAndSize((arg1), (arg2)) 68 #define _PyLong_FromLong(arg) \ 69 PyInt_FromLong(arg) 70 #define _PyLong_AsLong(arg) \ 71 PyInt_AsLong(arg) 72 #define _PyCapsule_New(arg1, arg2, arg3) \ 73 PyCObject_FromVoidPtr((arg1), (arg2)) 74 75 PyMODINIT_FUNC initperf_trace_context(void); 76 #else 77 #define _PyUnicode_FromString(arg) \ 78 PyUnicode_FromString(arg) 79 #define _PyUnicode_FromStringAndSize(arg1, arg2) \ 80 PyUnicode_FromStringAndSize((arg1), (arg2)) 81 #define _PyBytes_FromStringAndSize(arg1, arg2) \ 82 PyBytes_FromStringAndSize((arg1), (arg2)) 83 #define _PyLong_FromLong(arg) \ 84 PyLong_FromLong(arg) 85 #define _PyLong_AsLong(arg) \ 86 PyLong_AsLong(arg) 87 #define _PyCapsule_New(arg1, arg2, arg3) \ 88 PyCapsule_New((arg1), (arg2), (arg3)) 89 90 PyMODINIT_FUNC PyInit_perf_trace_context(void); 91 #endif 92 93 #ifdef HAVE_LIBTRACEEVENT 94 #define TRACE_EVENT_TYPE_MAX \ 95 ((1 << (sizeof(unsigned short) * 8)) - 1) 96 97 #define N_COMMON_FIELDS 7 98 99 static char *cur_field_name; 100 static int zero_flag_atom; 101 #endif 102 103 #define MAX_FIELDS 64 104 105 extern struct scripting_context *scripting_context; 106 107 static PyObject *main_module, *main_dict; 108 109 struct tables { 110 struct db_export dbe; 111 PyObject *evsel_handler; 112 PyObject *machine_handler; 113 PyObject *thread_handler; 114 PyObject *comm_handler; 115 PyObject *comm_thread_handler; 116 PyObject *dso_handler; 117 PyObject *symbol_handler; 118 PyObject *branch_type_handler; 119 PyObject *sample_handler; 120 PyObject *call_path_handler; 121 PyObject *call_return_handler; 122 PyObject *synth_handler; 123 PyObject *context_switch_handler; 124 bool db_export_mode; 125 }; 126 127 static struct tables tables_global; 128 129 static void handler_call_die(const char *handler_name) __noreturn; 130 static void handler_call_die(const char *handler_name) 131 { 132 PyErr_Print(); 133 Py_FatalError("problem in Python trace event handler"); 134 // Py_FatalError does not return 135 // but we have to make the compiler happy 136 abort(); 137 } 138 139 /* 140 * Insert val into the dictionary and decrement the reference counter. 141 * This is necessary for dictionaries since PyDict_SetItemString() does not 142 * steal a reference, as opposed to PyTuple_SetItem(). 143 */ 144 static void pydict_set_item_string_decref(PyObject *dict, const char *key, PyObject *val) 145 { 146 PyDict_SetItemString(dict, key, val); 147 Py_DECREF(val); 148 } 149 150 static PyObject *get_handler(const char *handler_name) 151 { 152 PyObject *handler; 153 154 handler = PyDict_GetItemString(main_dict, handler_name); 155 if (handler && !PyCallable_Check(handler)) 156 return NULL; 157 return handler; 158 } 159 160 static void call_object(PyObject *handler, PyObject *args, const char *die_msg) 161 { 162 PyObject *retval; 163 164 retval = PyObject_CallObject(handler, args); 165 if (retval == NULL) 166 handler_call_die(die_msg); 167 Py_DECREF(retval); 168 } 169 170 static void try_call_object(const char *handler_name, PyObject *args) 171 { 172 PyObject *handler; 173 174 handler = get_handler(handler_name); 175 if (handler) 176 call_object(handler, args, handler_name); 177 } 178 179 #ifdef HAVE_LIBTRACEEVENT 180 static int get_argument_count(PyObject *handler) 181 { 182 int arg_count = 0; 183 184 /* 185 * The attribute for the code object is func_code in Python 2, 186 * whereas it is __code__ in Python 3.0+. 187 */ 188 PyObject *code_obj = PyObject_GetAttrString(handler, 189 "func_code"); 190 if (PyErr_Occurred()) { 191 PyErr_Clear(); 192 code_obj = PyObject_GetAttrString(handler, 193 "__code__"); 194 } 195 PyErr_Clear(); 196 if (code_obj) { 197 PyObject *arg_count_obj = PyObject_GetAttrString(code_obj, 198 "co_argcount"); 199 if (arg_count_obj) { 200 arg_count = (int) _PyLong_AsLong(arg_count_obj); 201 Py_DECREF(arg_count_obj); 202 } 203 Py_DECREF(code_obj); 204 } 205 return arg_count; 206 } 207 208 static void define_value(enum tep_print_arg_type field_type, 209 const char *ev_name, 210 const char *field_name, 211 const char *field_value, 212 const char *field_str) 213 { 214 const char *handler_name = "define_flag_value"; 215 PyObject *t; 216 unsigned long long value; 217 unsigned n = 0; 218 219 if (field_type == TEP_PRINT_SYMBOL) 220 handler_name = "define_symbolic_value"; 221 222 t = PyTuple_New(4); 223 if (!t) 224 Py_FatalError("couldn't create Python tuple"); 225 226 value = eval_flag(field_value); 227 228 PyTuple_SetItem(t, n++, _PyUnicode_FromString(ev_name)); 229 PyTuple_SetItem(t, n++, _PyUnicode_FromString(field_name)); 230 PyTuple_SetItem(t, n++, _PyLong_FromLong(value)); 231 PyTuple_SetItem(t, n++, _PyUnicode_FromString(field_str)); 232 233 try_call_object(handler_name, t); 234 235 Py_DECREF(t); 236 } 237 238 static void define_values(enum tep_print_arg_type field_type, 239 struct tep_print_flag_sym *field, 240 const char *ev_name, 241 const char *field_name) 242 { 243 define_value(field_type, ev_name, field_name, field->value, 244 field->str); 245 246 if (field->next) 247 define_values(field_type, field->next, ev_name, field_name); 248 } 249 250 static void define_field(enum tep_print_arg_type field_type, 251 const char *ev_name, 252 const char *field_name, 253 const char *delim) 254 { 255 const char *handler_name = "define_flag_field"; 256 PyObject *t; 257 unsigned n = 0; 258 259 if (field_type == TEP_PRINT_SYMBOL) 260 handler_name = "define_symbolic_field"; 261 262 if (field_type == TEP_PRINT_FLAGS) 263 t = PyTuple_New(3); 264 else 265 t = PyTuple_New(2); 266 if (!t) 267 Py_FatalError("couldn't create Python tuple"); 268 269 PyTuple_SetItem(t, n++, _PyUnicode_FromString(ev_name)); 270 PyTuple_SetItem(t, n++, _PyUnicode_FromString(field_name)); 271 if (field_type == TEP_PRINT_FLAGS) 272 PyTuple_SetItem(t, n++, _PyUnicode_FromString(delim)); 273 274 try_call_object(handler_name, t); 275 276 Py_DECREF(t); 277 } 278 279 static void define_event_symbols(struct tep_event *event, 280 const char *ev_name, 281 struct tep_print_arg *args) 282 { 283 if (args == NULL) 284 return; 285 286 switch (args->type) { 287 case TEP_PRINT_NULL: 288 break; 289 case TEP_PRINT_ATOM: 290 define_value(TEP_PRINT_FLAGS, ev_name, cur_field_name, "0", 291 args->atom.atom); 292 zero_flag_atom = 0; 293 break; 294 case TEP_PRINT_FIELD: 295 free(cur_field_name); 296 cur_field_name = strdup(args->field.name); 297 break; 298 case TEP_PRINT_FLAGS: 299 define_event_symbols(event, ev_name, args->flags.field); 300 define_field(TEP_PRINT_FLAGS, ev_name, cur_field_name, 301 args->flags.delim); 302 define_values(TEP_PRINT_FLAGS, args->flags.flags, ev_name, 303 cur_field_name); 304 break; 305 case TEP_PRINT_SYMBOL: 306 define_event_symbols(event, ev_name, args->symbol.field); 307 define_field(TEP_PRINT_SYMBOL, ev_name, cur_field_name, NULL); 308 define_values(TEP_PRINT_SYMBOL, args->symbol.symbols, ev_name, 309 cur_field_name); 310 break; 311 case TEP_PRINT_HEX: 312 case TEP_PRINT_HEX_STR: 313 define_event_symbols(event, ev_name, args->hex.field); 314 define_event_symbols(event, ev_name, args->hex.size); 315 break; 316 case TEP_PRINT_INT_ARRAY: 317 define_event_symbols(event, ev_name, args->int_array.field); 318 define_event_symbols(event, ev_name, args->int_array.count); 319 define_event_symbols(event, ev_name, args->int_array.el_size); 320 break; 321 case TEP_PRINT_STRING: 322 break; 323 case TEP_PRINT_TYPE: 324 define_event_symbols(event, ev_name, args->typecast.item); 325 break; 326 case TEP_PRINT_OP: 327 if (strcmp(args->op.op, ":") == 0) 328 zero_flag_atom = 1; 329 define_event_symbols(event, ev_name, args->op.left); 330 define_event_symbols(event, ev_name, args->op.right); 331 break; 332 default: 333 /* gcc warns for these? */ 334 case TEP_PRINT_BSTRING: 335 case TEP_PRINT_DYNAMIC_ARRAY: 336 case TEP_PRINT_DYNAMIC_ARRAY_LEN: 337 case TEP_PRINT_FUNC: 338 case TEP_PRINT_BITMASK: 339 /* we should warn... */ 340 return; 341 } 342 343 if (args->next) 344 define_event_symbols(event, ev_name, args->next); 345 } 346 347 static PyObject *get_field_numeric_entry(struct tep_event *event, 348 struct tep_format_field *field, void *data) 349 { 350 bool is_array = field->flags & TEP_FIELD_IS_ARRAY; 351 PyObject *obj = NULL, *list = NULL; 352 unsigned long long val; 353 unsigned int item_size, n_items, i; 354 355 if (is_array) { 356 list = PyList_New(field->arraylen); 357 if (!list) 358 Py_FatalError("couldn't create Python list"); 359 item_size = field->size / field->arraylen; 360 n_items = field->arraylen; 361 } else { 362 item_size = field->size; 363 n_items = 1; 364 } 365 366 for (i = 0; i < n_items; i++) { 367 368 val = read_size(event, data + field->offset + i * item_size, 369 item_size); 370 if (field->flags & TEP_FIELD_IS_SIGNED) { 371 if ((long long)val >= LONG_MIN && 372 (long long)val <= LONG_MAX) 373 obj = _PyLong_FromLong(val); 374 else 375 obj = PyLong_FromLongLong(val); 376 } else { 377 if (val <= LONG_MAX) 378 obj = _PyLong_FromLong(val); 379 else 380 obj = PyLong_FromUnsignedLongLong(val); 381 } 382 if (is_array) 383 PyList_SET_ITEM(list, i, obj); 384 } 385 if (is_array) 386 obj = list; 387 return obj; 388 } 389 #endif 390 391 static const char *get_dsoname(struct map *map) 392 { 393 const char *dsoname = "[unknown]"; 394 struct dso *dso = map ? map__dso(map) : NULL; 395 396 if (dso) { 397 if (symbol_conf.show_kernel_path && dso__long_name(dso)) 398 dsoname = dso__long_name(dso); 399 else 400 dsoname = dso__name(dso); 401 } 402 403 return dsoname; 404 } 405 406 static unsigned long get_offset(struct symbol *sym, struct addr_location *al) 407 { 408 unsigned long offset; 409 410 if (al->addr < sym->end) 411 offset = al->addr - sym->start; 412 else 413 offset = al->addr - map__start(al->map) - sym->start; 414 415 return offset; 416 } 417 418 static PyObject *python_process_callchain(struct perf_sample *sample, 419 struct evsel *evsel, 420 struct addr_location *al) 421 { 422 PyObject *pylist; 423 struct callchain_cursor *cursor; 424 425 pylist = PyList_New(0); 426 if (!pylist) 427 Py_FatalError("couldn't create Python list"); 428 429 if (!symbol_conf.use_callchain || !sample->callchain) 430 goto exit; 431 432 cursor = get_tls_callchain_cursor(); 433 if (thread__resolve_callchain(al->thread, cursor, evsel, 434 sample, NULL, NULL, 435 scripting_max_stack) != 0) { 436 pr_err("Failed to resolve callchain. Skipping\n"); 437 goto exit; 438 } 439 callchain_cursor_commit(cursor); 440 441 442 while (1) { 443 PyObject *pyelem; 444 struct callchain_cursor_node *node; 445 node = callchain_cursor_current(cursor); 446 if (!node) 447 break; 448 449 pyelem = PyDict_New(); 450 if (!pyelem) 451 Py_FatalError("couldn't create Python dictionary"); 452 453 454 pydict_set_item_string_decref(pyelem, "ip", 455 PyLong_FromUnsignedLongLong(node->ip)); 456 457 if (node->ms.sym) { 458 PyObject *pysym = PyDict_New(); 459 if (!pysym) 460 Py_FatalError("couldn't create Python dictionary"); 461 pydict_set_item_string_decref(pysym, "start", 462 PyLong_FromUnsignedLongLong(node->ms.sym->start)); 463 pydict_set_item_string_decref(pysym, "end", 464 PyLong_FromUnsignedLongLong(node->ms.sym->end)); 465 pydict_set_item_string_decref(pysym, "binding", 466 _PyLong_FromLong(node->ms.sym->binding)); 467 pydict_set_item_string_decref(pysym, "name", 468 _PyUnicode_FromStringAndSize(node->ms.sym->name, 469 node->ms.sym->namelen)); 470 pydict_set_item_string_decref(pyelem, "sym", pysym); 471 472 if (node->ms.map) { 473 struct map *map = node->ms.map; 474 struct addr_location node_al; 475 unsigned long offset; 476 477 addr_location__init(&node_al); 478 node_al.addr = map__map_ip(map, node->ip); 479 node_al.map = map__get(map); 480 offset = get_offset(node->ms.sym, &node_al); 481 addr_location__exit(&node_al); 482 483 pydict_set_item_string_decref( 484 pyelem, "sym_off", 485 PyLong_FromUnsignedLongLong(offset)); 486 } 487 if (node->srcline && strcmp(":0", node->srcline)) { 488 pydict_set_item_string_decref( 489 pyelem, "sym_srcline", 490 _PyUnicode_FromString(node->srcline)); 491 } 492 } 493 494 if (node->ms.map) { 495 const char *dsoname = get_dsoname(node->ms.map); 496 497 pydict_set_item_string_decref(pyelem, "dso", 498 _PyUnicode_FromString(dsoname)); 499 } 500 501 callchain_cursor_advance(cursor); 502 PyList_Append(pylist, pyelem); 503 Py_DECREF(pyelem); 504 } 505 506 exit: 507 return pylist; 508 } 509 510 static PyObject *python_process_brstack(struct perf_sample *sample, 511 struct thread *thread) 512 { 513 struct branch_stack *br = sample->branch_stack; 514 struct branch_entry *entries = perf_sample__branch_entries(sample); 515 PyObject *pylist; 516 u64 i; 517 518 pylist = PyList_New(0); 519 if (!pylist) 520 Py_FatalError("couldn't create Python list"); 521 522 if (!(br && br->nr)) 523 goto exit; 524 525 for (i = 0; i < br->nr; i++) { 526 PyObject *pyelem; 527 struct addr_location al; 528 const char *dsoname; 529 530 pyelem = PyDict_New(); 531 if (!pyelem) 532 Py_FatalError("couldn't create Python dictionary"); 533 534 pydict_set_item_string_decref(pyelem, "from", 535 PyLong_FromUnsignedLongLong(entries[i].from)); 536 pydict_set_item_string_decref(pyelem, "to", 537 PyLong_FromUnsignedLongLong(entries[i].to)); 538 pydict_set_item_string_decref(pyelem, "mispred", 539 PyBool_FromLong(entries[i].flags.mispred)); 540 pydict_set_item_string_decref(pyelem, "predicted", 541 PyBool_FromLong(entries[i].flags.predicted)); 542 pydict_set_item_string_decref(pyelem, "in_tx", 543 PyBool_FromLong(entries[i].flags.in_tx)); 544 pydict_set_item_string_decref(pyelem, "abort", 545 PyBool_FromLong(entries[i].flags.abort)); 546 pydict_set_item_string_decref(pyelem, "cycles", 547 PyLong_FromUnsignedLongLong(entries[i].flags.cycles)); 548 549 addr_location__init(&al); 550 thread__find_map_fb(thread, sample->cpumode, 551 entries[i].from, &al); 552 dsoname = get_dsoname(al.map); 553 pydict_set_item_string_decref(pyelem, "from_dsoname", 554 _PyUnicode_FromString(dsoname)); 555 556 thread__find_map_fb(thread, sample->cpumode, 557 entries[i].to, &al); 558 dsoname = get_dsoname(al.map); 559 pydict_set_item_string_decref(pyelem, "to_dsoname", 560 _PyUnicode_FromString(dsoname)); 561 562 addr_location__exit(&al); 563 PyList_Append(pylist, pyelem); 564 Py_DECREF(pyelem); 565 } 566 567 exit: 568 return pylist; 569 } 570 571 static int get_symoff(struct symbol *sym, struct addr_location *al, 572 bool print_off, char *bf, int size) 573 { 574 unsigned long offset; 575 576 if (!sym || !sym->name[0]) 577 return scnprintf(bf, size, "%s", "[unknown]"); 578 579 if (!print_off) 580 return scnprintf(bf, size, "%s", sym->name); 581 582 offset = get_offset(sym, al); 583 584 return scnprintf(bf, size, "%s+0x%x", sym->name, offset); 585 } 586 587 static int get_br_mspred(struct branch_flags *flags, char *bf, int size) 588 { 589 if (!flags->mispred && !flags->predicted) 590 return scnprintf(bf, size, "%s", "-"); 591 592 if (flags->mispred) 593 return scnprintf(bf, size, "%s", "M"); 594 595 return scnprintf(bf, size, "%s", "P"); 596 } 597 598 static PyObject *python_process_brstacksym(struct perf_sample *sample, 599 struct thread *thread) 600 { 601 struct branch_stack *br = sample->branch_stack; 602 struct branch_entry *entries = perf_sample__branch_entries(sample); 603 PyObject *pylist; 604 u64 i; 605 char bf[512]; 606 607 pylist = PyList_New(0); 608 if (!pylist) 609 Py_FatalError("couldn't create Python list"); 610 611 if (!(br && br->nr)) 612 goto exit; 613 614 for (i = 0; i < br->nr; i++) { 615 PyObject *pyelem; 616 struct addr_location al; 617 618 addr_location__init(&al); 619 pyelem = PyDict_New(); 620 if (!pyelem) 621 Py_FatalError("couldn't create Python dictionary"); 622 623 thread__find_symbol_fb(thread, sample->cpumode, 624 entries[i].from, &al); 625 get_symoff(al.sym, &al, true, bf, sizeof(bf)); 626 pydict_set_item_string_decref(pyelem, "from", 627 _PyUnicode_FromString(bf)); 628 629 thread__find_symbol_fb(thread, sample->cpumode, 630 entries[i].to, &al); 631 get_symoff(al.sym, &al, true, bf, sizeof(bf)); 632 pydict_set_item_string_decref(pyelem, "to", 633 _PyUnicode_FromString(bf)); 634 635 get_br_mspred(&entries[i].flags, bf, sizeof(bf)); 636 pydict_set_item_string_decref(pyelem, "pred", 637 _PyUnicode_FromString(bf)); 638 639 if (entries[i].flags.in_tx) { 640 pydict_set_item_string_decref(pyelem, "in_tx", 641 _PyUnicode_FromString("X")); 642 } else { 643 pydict_set_item_string_decref(pyelem, "in_tx", 644 _PyUnicode_FromString("-")); 645 } 646 647 if (entries[i].flags.abort) { 648 pydict_set_item_string_decref(pyelem, "abort", 649 _PyUnicode_FromString("A")); 650 } else { 651 pydict_set_item_string_decref(pyelem, "abort", 652 _PyUnicode_FromString("-")); 653 } 654 655 PyList_Append(pylist, pyelem); 656 Py_DECREF(pyelem); 657 addr_location__exit(&al); 658 } 659 660 exit: 661 return pylist; 662 } 663 664 static PyObject *get_sample_value_as_tuple(struct sample_read_value *value, 665 u64 read_format) 666 { 667 PyObject *t; 668 669 t = PyTuple_New(3); 670 if (!t) 671 Py_FatalError("couldn't create Python tuple"); 672 PyTuple_SetItem(t, 0, PyLong_FromUnsignedLongLong(value->id)); 673 PyTuple_SetItem(t, 1, PyLong_FromUnsignedLongLong(value->value)); 674 if (read_format & PERF_FORMAT_LOST) 675 PyTuple_SetItem(t, 2, PyLong_FromUnsignedLongLong(value->lost)); 676 677 return t; 678 } 679 680 static void set_sample_read_in_dict(PyObject *dict_sample, 681 struct perf_sample *sample, 682 struct evsel *evsel) 683 { 684 u64 read_format = evsel->core.attr.read_format; 685 PyObject *values; 686 unsigned int i; 687 688 if (read_format & PERF_FORMAT_TOTAL_TIME_ENABLED) { 689 pydict_set_item_string_decref(dict_sample, "time_enabled", 690 PyLong_FromUnsignedLongLong(sample->read.time_enabled)); 691 } 692 693 if (read_format & PERF_FORMAT_TOTAL_TIME_RUNNING) { 694 pydict_set_item_string_decref(dict_sample, "time_running", 695 PyLong_FromUnsignedLongLong(sample->read.time_running)); 696 } 697 698 if (read_format & PERF_FORMAT_GROUP) 699 values = PyList_New(sample->read.group.nr); 700 else 701 values = PyList_New(1); 702 703 if (!values) 704 Py_FatalError("couldn't create Python list"); 705 706 if (read_format & PERF_FORMAT_GROUP) { 707 struct sample_read_value *v = sample->read.group.values; 708 709 i = 0; 710 sample_read_group__for_each(v, sample->read.group.nr, read_format) { 711 PyObject *t = get_sample_value_as_tuple(v, read_format); 712 PyList_SET_ITEM(values, i, t); 713 i++; 714 } 715 } else { 716 PyObject *t = get_sample_value_as_tuple(&sample->read.one, 717 read_format); 718 PyList_SET_ITEM(values, 0, t); 719 } 720 pydict_set_item_string_decref(dict_sample, "values", values); 721 } 722 723 static void set_sample_datasrc_in_dict(PyObject *dict, 724 struct perf_sample *sample) 725 { 726 struct mem_info *mi = mem_info__new(); 727 char decode[100]; 728 729 if (!mi) 730 Py_FatalError("couldn't create mem-info"); 731 732 pydict_set_item_string_decref(dict, "datasrc", 733 PyLong_FromUnsignedLongLong(sample->data_src)); 734 735 mem_info__data_src(mi)->val = sample->data_src; 736 perf_script__meminfo_scnprintf(decode, 100, mi); 737 mem_info__put(mi); 738 739 pydict_set_item_string_decref(dict, "datasrc_decode", 740 _PyUnicode_FromString(decode)); 741 } 742 743 static void regs_map(struct regs_dump *regs, uint64_t mask, const char *arch, char *bf, int size) 744 { 745 unsigned int i = 0, r; 746 int printed = 0; 747 748 bf[0] = 0; 749 750 if (size <= 0) 751 return; 752 753 if (!regs || !regs->regs) 754 return; 755 756 for_each_set_bit(r, (unsigned long *) &mask, sizeof(mask) * 8) { 757 u64 val = regs->regs[i++]; 758 759 printed += scnprintf(bf + printed, size - printed, 760 "%5s:0x%" PRIx64 " ", 761 perf_reg_name(r, arch), val); 762 } 763 } 764 765 #define MAX_REG_SIZE 128 766 767 static int set_regs_in_dict(PyObject *dict, 768 struct perf_sample *sample, 769 struct evsel *evsel) 770 { 771 struct perf_event_attr *attr = &evsel->core.attr; 772 const char *arch = perf_env__arch(evsel__env(evsel)); 773 774 int size = (__sw_hweight64(attr->sample_regs_intr) * MAX_REG_SIZE) + 1; 775 char *bf = malloc(size); 776 if (!bf) 777 return -1; 778 779 regs_map(&sample->intr_regs, attr->sample_regs_intr, arch, bf, size); 780 781 pydict_set_item_string_decref(dict, "iregs", 782 _PyUnicode_FromString(bf)); 783 784 regs_map(&sample->user_regs, attr->sample_regs_user, arch, bf, size); 785 786 pydict_set_item_string_decref(dict, "uregs", 787 _PyUnicode_FromString(bf)); 788 free(bf); 789 790 return 0; 791 } 792 793 static void set_sym_in_dict(PyObject *dict, struct addr_location *al, 794 const char *dso_field, const char *dso_bid_field, 795 const char *dso_map_start, const char *dso_map_end, 796 const char *sym_field, const char *symoff_field, 797 const char *map_pgoff) 798 { 799 char sbuild_id[SBUILD_ID_SIZE]; 800 801 if (al->map) { 802 struct dso *dso = map__dso(al->map); 803 804 pydict_set_item_string_decref(dict, dso_field, 805 _PyUnicode_FromString(dso__name(dso))); 806 build_id__sprintf(dso__bid(dso), sbuild_id); 807 pydict_set_item_string_decref(dict, dso_bid_field, 808 _PyUnicode_FromString(sbuild_id)); 809 pydict_set_item_string_decref(dict, dso_map_start, 810 PyLong_FromUnsignedLong(map__start(al->map))); 811 pydict_set_item_string_decref(dict, dso_map_end, 812 PyLong_FromUnsignedLong(map__end(al->map))); 813 pydict_set_item_string_decref(dict, map_pgoff, 814 PyLong_FromUnsignedLongLong(map__pgoff(al->map))); 815 } 816 if (al->sym) { 817 pydict_set_item_string_decref(dict, sym_field, 818 _PyUnicode_FromString(al->sym->name)); 819 pydict_set_item_string_decref(dict, symoff_field, 820 PyLong_FromUnsignedLong(get_offset(al->sym, al))); 821 } 822 } 823 824 static void set_sample_flags(PyObject *dict, u32 flags) 825 { 826 const char *ch = PERF_IP_FLAG_CHARS; 827 char *p, str[33]; 828 829 for (p = str; *ch; ch++, flags >>= 1) { 830 if (flags & 1) 831 *p++ = *ch; 832 } 833 *p = 0; 834 pydict_set_item_string_decref(dict, "flags", _PyUnicode_FromString(str)); 835 } 836 837 static void python_process_sample_flags(struct perf_sample *sample, PyObject *dict_sample) 838 { 839 char flags_disp[SAMPLE_FLAGS_BUF_SIZE]; 840 841 set_sample_flags(dict_sample, sample->flags); 842 perf_sample__sprintf_flags(sample->flags, flags_disp, sizeof(flags_disp)); 843 pydict_set_item_string_decref(dict_sample, "flags_disp", 844 _PyUnicode_FromString(flags_disp)); 845 } 846 847 static PyObject *get_perf_sample_dict(struct perf_sample *sample, 848 struct evsel *evsel, 849 struct addr_location *al, 850 struct addr_location *addr_al, 851 PyObject *callchain) 852 { 853 PyObject *dict, *dict_sample, *brstack, *brstacksym; 854 855 dict = PyDict_New(); 856 if (!dict) 857 Py_FatalError("couldn't create Python dictionary"); 858 859 dict_sample = PyDict_New(); 860 if (!dict_sample) 861 Py_FatalError("couldn't create Python dictionary"); 862 863 pydict_set_item_string_decref(dict, "ev_name", _PyUnicode_FromString(evsel__name(evsel))); 864 pydict_set_item_string_decref(dict, "attr", _PyBytes_FromStringAndSize((const char *)&evsel->core.attr, sizeof(evsel->core.attr))); 865 866 pydict_set_item_string_decref(dict_sample, "id", 867 PyLong_FromUnsignedLongLong(sample->id)); 868 pydict_set_item_string_decref(dict_sample, "stream_id", 869 PyLong_FromUnsignedLongLong(sample->stream_id)); 870 pydict_set_item_string_decref(dict_sample, "pid", 871 _PyLong_FromLong(sample->pid)); 872 pydict_set_item_string_decref(dict_sample, "tid", 873 _PyLong_FromLong(sample->tid)); 874 pydict_set_item_string_decref(dict_sample, "cpu", 875 _PyLong_FromLong(sample->cpu)); 876 pydict_set_item_string_decref(dict_sample, "ip", 877 PyLong_FromUnsignedLongLong(sample->ip)); 878 pydict_set_item_string_decref(dict_sample, "time", 879 PyLong_FromUnsignedLongLong(sample->time)); 880 pydict_set_item_string_decref(dict_sample, "period", 881 PyLong_FromUnsignedLongLong(sample->period)); 882 pydict_set_item_string_decref(dict_sample, "phys_addr", 883 PyLong_FromUnsignedLongLong(sample->phys_addr)); 884 pydict_set_item_string_decref(dict_sample, "addr", 885 PyLong_FromUnsignedLongLong(sample->addr)); 886 set_sample_read_in_dict(dict_sample, sample, evsel); 887 pydict_set_item_string_decref(dict_sample, "weight", 888 PyLong_FromUnsignedLongLong(sample->weight)); 889 pydict_set_item_string_decref(dict_sample, "ins_lat", 890 PyLong_FromUnsignedLong(sample->ins_lat)); 891 pydict_set_item_string_decref(dict_sample, "transaction", 892 PyLong_FromUnsignedLongLong(sample->transaction)); 893 set_sample_datasrc_in_dict(dict_sample, sample); 894 pydict_set_item_string_decref(dict, "sample", dict_sample); 895 896 pydict_set_item_string_decref(dict, "raw_buf", _PyBytes_FromStringAndSize( 897 (const char *)sample->raw_data, sample->raw_size)); 898 pydict_set_item_string_decref(dict, "comm", 899 _PyUnicode_FromString(thread__comm_str(al->thread))); 900 set_sym_in_dict(dict, al, "dso", "dso_bid", "dso_map_start", "dso_map_end", 901 "symbol", "symoff", "map_pgoff"); 902 903 pydict_set_item_string_decref(dict, "callchain", callchain); 904 905 brstack = python_process_brstack(sample, al->thread); 906 pydict_set_item_string_decref(dict, "brstack", brstack); 907 908 brstacksym = python_process_brstacksym(sample, al->thread); 909 pydict_set_item_string_decref(dict, "brstacksym", brstacksym); 910 911 if (sample->machine_pid) { 912 pydict_set_item_string_decref(dict_sample, "machine_pid", 913 _PyLong_FromLong(sample->machine_pid)); 914 pydict_set_item_string_decref(dict_sample, "vcpu", 915 _PyLong_FromLong(sample->vcpu)); 916 } 917 918 pydict_set_item_string_decref(dict_sample, "cpumode", 919 _PyLong_FromLong((unsigned long)sample->cpumode)); 920 921 if (addr_al) { 922 pydict_set_item_string_decref(dict_sample, "addr_correlates_sym", 923 PyBool_FromLong(1)); 924 set_sym_in_dict(dict_sample, addr_al, "addr_dso", "addr_dso_bid", 925 "addr_dso_map_start", "addr_dso_map_end", 926 "addr_symbol", "addr_symoff", "addr_map_pgoff"); 927 } 928 929 if (sample->flags) 930 python_process_sample_flags(sample, dict_sample); 931 932 /* Instructions per cycle (IPC) */ 933 if (sample->insn_cnt && sample->cyc_cnt) { 934 pydict_set_item_string_decref(dict_sample, "insn_cnt", 935 PyLong_FromUnsignedLongLong(sample->insn_cnt)); 936 pydict_set_item_string_decref(dict_sample, "cyc_cnt", 937 PyLong_FromUnsignedLongLong(sample->cyc_cnt)); 938 } 939 940 if (set_regs_in_dict(dict, sample, evsel)) 941 Py_FatalError("Failed to setting regs in dict"); 942 943 return dict; 944 } 945 946 #ifdef HAVE_LIBTRACEEVENT 947 static void python_process_tracepoint(struct perf_sample *sample, 948 struct evsel *evsel, 949 struct addr_location *al, 950 struct addr_location *addr_al) 951 { 952 struct tep_event *event; 953 PyObject *handler, *context, *t, *obj = NULL, *callchain; 954 PyObject *dict = NULL, *all_entries_dict = NULL; 955 static char handler_name[256]; 956 struct tep_format_field *field; 957 unsigned long s, ns; 958 unsigned n = 0; 959 int pid; 960 int cpu = sample->cpu; 961 void *data = sample->raw_data; 962 unsigned long long nsecs = sample->time; 963 const char *comm = thread__comm_str(al->thread); 964 const char *default_handler_name = "trace_unhandled"; 965 DECLARE_BITMAP(events_defined, TRACE_EVENT_TYPE_MAX); 966 967 bitmap_zero(events_defined, TRACE_EVENT_TYPE_MAX); 968 969 event = evsel__tp_format(evsel); 970 if (!event) { 971 snprintf(handler_name, sizeof(handler_name), 972 "ug! no event found for type %" PRIu64, (u64)evsel->core.attr.config); 973 Py_FatalError(handler_name); 974 } 975 976 pid = raw_field_value(event, "common_pid", data); 977 978 sprintf(handler_name, "%s__%s", event->system, event->name); 979 980 if (!__test_and_set_bit(event->id, events_defined)) 981 define_event_symbols(event, handler_name, event->print_fmt.args); 982 983 handler = get_handler(handler_name); 984 if (!handler) { 985 handler = get_handler(default_handler_name); 986 if (!handler) 987 return; 988 dict = PyDict_New(); 989 if (!dict) 990 Py_FatalError("couldn't create Python dict"); 991 } 992 993 t = PyTuple_New(MAX_FIELDS); 994 if (!t) 995 Py_FatalError("couldn't create Python tuple"); 996 997 998 s = nsecs / NSEC_PER_SEC; 999 ns = nsecs - s * NSEC_PER_SEC; 1000 1001 context = _PyCapsule_New(scripting_context, NULL, NULL); 1002 1003 PyTuple_SetItem(t, n++, _PyUnicode_FromString(handler_name)); 1004 PyTuple_SetItem(t, n++, context); 1005 1006 /* ip unwinding */ 1007 callchain = python_process_callchain(sample, evsel, al); 1008 /* Need an additional reference for the perf_sample dict */ 1009 Py_INCREF(callchain); 1010 1011 if (!dict) { 1012 PyTuple_SetItem(t, n++, _PyLong_FromLong(cpu)); 1013 PyTuple_SetItem(t, n++, _PyLong_FromLong(s)); 1014 PyTuple_SetItem(t, n++, _PyLong_FromLong(ns)); 1015 PyTuple_SetItem(t, n++, _PyLong_FromLong(pid)); 1016 PyTuple_SetItem(t, n++, _PyUnicode_FromString(comm)); 1017 PyTuple_SetItem(t, n++, callchain); 1018 } else { 1019 pydict_set_item_string_decref(dict, "common_cpu", _PyLong_FromLong(cpu)); 1020 pydict_set_item_string_decref(dict, "common_s", _PyLong_FromLong(s)); 1021 pydict_set_item_string_decref(dict, "common_ns", _PyLong_FromLong(ns)); 1022 pydict_set_item_string_decref(dict, "common_pid", _PyLong_FromLong(pid)); 1023 pydict_set_item_string_decref(dict, "common_comm", _PyUnicode_FromString(comm)); 1024 pydict_set_item_string_decref(dict, "common_callchain", callchain); 1025 } 1026 for (field = event->format.fields; field; field = field->next) { 1027 unsigned int offset, len; 1028 unsigned long long val; 1029 1030 if (field->flags & TEP_FIELD_IS_ARRAY) { 1031 offset = field->offset; 1032 len = field->size; 1033 if (field->flags & TEP_FIELD_IS_DYNAMIC) { 1034 val = tep_read_number(scripting_context->pevent, 1035 data + offset, len); 1036 offset = val; 1037 len = offset >> 16; 1038 offset &= 0xffff; 1039 if (tep_field_is_relative(field->flags)) 1040 offset += field->offset + field->size; 1041 } 1042 if (field->flags & TEP_FIELD_IS_STRING && 1043 is_printable_array(data + offset, len)) { 1044 obj = _PyUnicode_FromString((char *) data + offset); 1045 } else { 1046 obj = PyByteArray_FromStringAndSize((const char *) data + offset, len); 1047 field->flags &= ~TEP_FIELD_IS_STRING; 1048 } 1049 } else { /* FIELD_IS_NUMERIC */ 1050 obj = get_field_numeric_entry(event, field, data); 1051 } 1052 if (!dict) 1053 PyTuple_SetItem(t, n++, obj); 1054 else 1055 pydict_set_item_string_decref(dict, field->name, obj); 1056 1057 } 1058 1059 if (dict) 1060 PyTuple_SetItem(t, n++, dict); 1061 1062 if (get_argument_count(handler) == (int) n + 1) { 1063 all_entries_dict = get_perf_sample_dict(sample, evsel, al, addr_al, 1064 callchain); 1065 PyTuple_SetItem(t, n++, all_entries_dict); 1066 } else { 1067 Py_DECREF(callchain); 1068 } 1069 1070 if (_PyTuple_Resize(&t, n) == -1) 1071 Py_FatalError("error resizing Python tuple"); 1072 1073 if (!dict) 1074 call_object(handler, t, handler_name); 1075 else 1076 call_object(handler, t, default_handler_name); 1077 1078 Py_DECREF(t); 1079 } 1080 #else 1081 static void python_process_tracepoint(struct perf_sample *sample __maybe_unused, 1082 struct evsel *evsel __maybe_unused, 1083 struct addr_location *al __maybe_unused, 1084 struct addr_location *addr_al __maybe_unused) 1085 { 1086 fprintf(stderr, "Tracepoint events are not supported because " 1087 "perf is not linked with libtraceevent.\n"); 1088 } 1089 #endif 1090 1091 static PyObject *tuple_new(unsigned int sz) 1092 { 1093 PyObject *t; 1094 1095 t = PyTuple_New(sz); 1096 if (!t) 1097 Py_FatalError("couldn't create Python tuple"); 1098 return t; 1099 } 1100 1101 static int tuple_set_s64(PyObject *t, unsigned int pos, s64 val) 1102 { 1103 #if BITS_PER_LONG == 64 1104 return PyTuple_SetItem(t, pos, _PyLong_FromLong(val)); 1105 #endif 1106 #if BITS_PER_LONG == 32 1107 return PyTuple_SetItem(t, pos, PyLong_FromLongLong(val)); 1108 #endif 1109 } 1110 1111 /* 1112 * Databases support only signed 64-bit numbers, so even though we are 1113 * exporting a u64, it must be as s64. 1114 */ 1115 #define tuple_set_d64 tuple_set_s64 1116 1117 static int tuple_set_u64(PyObject *t, unsigned int pos, u64 val) 1118 { 1119 #if BITS_PER_LONG == 64 1120 return PyTuple_SetItem(t, pos, PyLong_FromUnsignedLong(val)); 1121 #endif 1122 #if BITS_PER_LONG == 32 1123 return PyTuple_SetItem(t, pos, PyLong_FromUnsignedLongLong(val)); 1124 #endif 1125 } 1126 1127 static int tuple_set_u32(PyObject *t, unsigned int pos, u32 val) 1128 { 1129 return PyTuple_SetItem(t, pos, PyLong_FromUnsignedLong(val)); 1130 } 1131 1132 static int tuple_set_s32(PyObject *t, unsigned int pos, s32 val) 1133 { 1134 return PyTuple_SetItem(t, pos, _PyLong_FromLong(val)); 1135 } 1136 1137 static int tuple_set_bool(PyObject *t, unsigned int pos, bool val) 1138 { 1139 return PyTuple_SetItem(t, pos, PyBool_FromLong(val)); 1140 } 1141 1142 static int tuple_set_string(PyObject *t, unsigned int pos, const char *s) 1143 { 1144 return PyTuple_SetItem(t, pos, _PyUnicode_FromString(s)); 1145 } 1146 1147 static int tuple_set_bytes(PyObject *t, unsigned int pos, void *bytes, 1148 unsigned int sz) 1149 { 1150 return PyTuple_SetItem(t, pos, _PyBytes_FromStringAndSize(bytes, sz)); 1151 } 1152 1153 static int python_export_evsel(struct db_export *dbe, struct evsel *evsel) 1154 { 1155 struct tables *tables = container_of(dbe, struct tables, dbe); 1156 PyObject *t; 1157 1158 t = tuple_new(2); 1159 1160 tuple_set_d64(t, 0, evsel->db_id); 1161 tuple_set_string(t, 1, evsel__name(evsel)); 1162 1163 call_object(tables->evsel_handler, t, "evsel_table"); 1164 1165 Py_DECREF(t); 1166 1167 return 0; 1168 } 1169 1170 static int python_export_machine(struct db_export *dbe, 1171 struct machine *machine) 1172 { 1173 struct tables *tables = container_of(dbe, struct tables, dbe); 1174 PyObject *t; 1175 1176 t = tuple_new(3); 1177 1178 tuple_set_d64(t, 0, machine->db_id); 1179 tuple_set_s32(t, 1, machine->pid); 1180 tuple_set_string(t, 2, machine->root_dir ? machine->root_dir : ""); 1181 1182 call_object(tables->machine_handler, t, "machine_table"); 1183 1184 Py_DECREF(t); 1185 1186 return 0; 1187 } 1188 1189 static int python_export_thread(struct db_export *dbe, struct thread *thread, 1190 u64 main_thread_db_id, struct machine *machine) 1191 { 1192 struct tables *tables = container_of(dbe, struct tables, dbe); 1193 PyObject *t; 1194 1195 t = tuple_new(5); 1196 1197 tuple_set_d64(t, 0, thread__db_id(thread)); 1198 tuple_set_d64(t, 1, machine->db_id); 1199 tuple_set_d64(t, 2, main_thread_db_id); 1200 tuple_set_s32(t, 3, thread__pid(thread)); 1201 tuple_set_s32(t, 4, thread__tid(thread)); 1202 1203 call_object(tables->thread_handler, t, "thread_table"); 1204 1205 Py_DECREF(t); 1206 1207 return 0; 1208 } 1209 1210 static int python_export_comm(struct db_export *dbe, struct comm *comm, 1211 struct thread *thread) 1212 { 1213 struct tables *tables = container_of(dbe, struct tables, dbe); 1214 PyObject *t; 1215 1216 t = tuple_new(5); 1217 1218 tuple_set_d64(t, 0, comm->db_id); 1219 tuple_set_string(t, 1, comm__str(comm)); 1220 tuple_set_d64(t, 2, thread__db_id(thread)); 1221 tuple_set_d64(t, 3, comm->start); 1222 tuple_set_s32(t, 4, comm->exec); 1223 1224 call_object(tables->comm_handler, t, "comm_table"); 1225 1226 Py_DECREF(t); 1227 1228 return 0; 1229 } 1230 1231 static int python_export_comm_thread(struct db_export *dbe, u64 db_id, 1232 struct comm *comm, struct thread *thread) 1233 { 1234 struct tables *tables = container_of(dbe, struct tables, dbe); 1235 PyObject *t; 1236 1237 t = tuple_new(3); 1238 1239 tuple_set_d64(t, 0, db_id); 1240 tuple_set_d64(t, 1, comm->db_id); 1241 tuple_set_d64(t, 2, thread__db_id(thread)); 1242 1243 call_object(tables->comm_thread_handler, t, "comm_thread_table"); 1244 1245 Py_DECREF(t); 1246 1247 return 0; 1248 } 1249 1250 static int python_export_dso(struct db_export *dbe, struct dso *dso, 1251 struct machine *machine) 1252 { 1253 struct tables *tables = container_of(dbe, struct tables, dbe); 1254 char sbuild_id[SBUILD_ID_SIZE]; 1255 PyObject *t; 1256 1257 build_id__sprintf(dso__bid(dso), sbuild_id); 1258 1259 t = tuple_new(5); 1260 1261 tuple_set_d64(t, 0, dso__db_id(dso)); 1262 tuple_set_d64(t, 1, machine->db_id); 1263 tuple_set_string(t, 2, dso__short_name(dso)); 1264 tuple_set_string(t, 3, dso__long_name(dso)); 1265 tuple_set_string(t, 4, sbuild_id); 1266 1267 call_object(tables->dso_handler, t, "dso_table"); 1268 1269 Py_DECREF(t); 1270 1271 return 0; 1272 } 1273 1274 static int python_export_symbol(struct db_export *dbe, struct symbol *sym, 1275 struct dso *dso) 1276 { 1277 struct tables *tables = container_of(dbe, struct tables, dbe); 1278 u64 *sym_db_id = symbol__priv(sym); 1279 PyObject *t; 1280 1281 t = tuple_new(6); 1282 1283 tuple_set_d64(t, 0, *sym_db_id); 1284 tuple_set_d64(t, 1, dso__db_id(dso)); 1285 tuple_set_d64(t, 2, sym->start); 1286 tuple_set_d64(t, 3, sym->end); 1287 tuple_set_s32(t, 4, sym->binding); 1288 tuple_set_string(t, 5, sym->name); 1289 1290 call_object(tables->symbol_handler, t, "symbol_table"); 1291 1292 Py_DECREF(t); 1293 1294 return 0; 1295 } 1296 1297 static int python_export_branch_type(struct db_export *dbe, u32 branch_type, 1298 const char *name) 1299 { 1300 struct tables *tables = container_of(dbe, struct tables, dbe); 1301 PyObject *t; 1302 1303 t = tuple_new(2); 1304 1305 tuple_set_s32(t, 0, branch_type); 1306 tuple_set_string(t, 1, name); 1307 1308 call_object(tables->branch_type_handler, t, "branch_type_table"); 1309 1310 Py_DECREF(t); 1311 1312 return 0; 1313 } 1314 1315 static void python_export_sample_table(struct db_export *dbe, 1316 struct export_sample *es) 1317 { 1318 struct tables *tables = container_of(dbe, struct tables, dbe); 1319 PyObject *t; 1320 1321 t = tuple_new(28); 1322 1323 tuple_set_d64(t, 0, es->db_id); 1324 tuple_set_d64(t, 1, es->evsel->db_id); 1325 tuple_set_d64(t, 2, maps__machine(es->al->maps)->db_id); 1326 tuple_set_d64(t, 3, thread__db_id(es->al->thread)); 1327 tuple_set_d64(t, 4, es->comm_db_id); 1328 tuple_set_d64(t, 5, es->dso_db_id); 1329 tuple_set_d64(t, 6, es->sym_db_id); 1330 tuple_set_d64(t, 7, es->offset); 1331 tuple_set_d64(t, 8, es->sample->ip); 1332 tuple_set_d64(t, 9, es->sample->time); 1333 tuple_set_s32(t, 10, es->sample->cpu); 1334 tuple_set_d64(t, 11, es->addr_dso_db_id); 1335 tuple_set_d64(t, 12, es->addr_sym_db_id); 1336 tuple_set_d64(t, 13, es->addr_offset); 1337 tuple_set_d64(t, 14, es->sample->addr); 1338 tuple_set_d64(t, 15, es->sample->period); 1339 tuple_set_d64(t, 16, es->sample->weight); 1340 tuple_set_d64(t, 17, es->sample->transaction); 1341 tuple_set_d64(t, 18, es->sample->data_src); 1342 tuple_set_s32(t, 19, es->sample->flags & PERF_BRANCH_MASK); 1343 tuple_set_s32(t, 20, !!(es->sample->flags & PERF_IP_FLAG_IN_TX)); 1344 tuple_set_d64(t, 21, es->call_path_id); 1345 tuple_set_d64(t, 22, es->sample->insn_cnt); 1346 tuple_set_d64(t, 23, es->sample->cyc_cnt); 1347 tuple_set_s32(t, 24, es->sample->flags); 1348 tuple_set_d64(t, 25, es->sample->id); 1349 tuple_set_d64(t, 26, es->sample->stream_id); 1350 tuple_set_u32(t, 27, es->sample->ins_lat); 1351 1352 call_object(tables->sample_handler, t, "sample_table"); 1353 1354 Py_DECREF(t); 1355 } 1356 1357 static void python_export_synth(struct db_export *dbe, struct export_sample *es) 1358 { 1359 struct tables *tables = container_of(dbe, struct tables, dbe); 1360 PyObject *t; 1361 1362 t = tuple_new(3); 1363 1364 tuple_set_d64(t, 0, es->db_id); 1365 tuple_set_d64(t, 1, es->evsel->core.attr.config); 1366 tuple_set_bytes(t, 2, es->sample->raw_data, es->sample->raw_size); 1367 1368 call_object(tables->synth_handler, t, "synth_data"); 1369 1370 Py_DECREF(t); 1371 } 1372 1373 static int python_export_sample(struct db_export *dbe, 1374 struct export_sample *es) 1375 { 1376 struct tables *tables = container_of(dbe, struct tables, dbe); 1377 1378 python_export_sample_table(dbe, es); 1379 1380 if (es->evsel->core.attr.type == PERF_TYPE_SYNTH && tables->synth_handler) 1381 python_export_synth(dbe, es); 1382 1383 return 0; 1384 } 1385 1386 static int python_export_call_path(struct db_export *dbe, struct call_path *cp) 1387 { 1388 struct tables *tables = container_of(dbe, struct tables, dbe); 1389 PyObject *t; 1390 u64 parent_db_id, sym_db_id; 1391 1392 parent_db_id = cp->parent ? cp->parent->db_id : 0; 1393 sym_db_id = cp->sym ? *(u64 *)symbol__priv(cp->sym) : 0; 1394 1395 t = tuple_new(4); 1396 1397 tuple_set_d64(t, 0, cp->db_id); 1398 tuple_set_d64(t, 1, parent_db_id); 1399 tuple_set_d64(t, 2, sym_db_id); 1400 tuple_set_d64(t, 3, cp->ip); 1401 1402 call_object(tables->call_path_handler, t, "call_path_table"); 1403 1404 Py_DECREF(t); 1405 1406 return 0; 1407 } 1408 1409 static int python_export_call_return(struct db_export *dbe, 1410 struct call_return *cr) 1411 { 1412 struct tables *tables = container_of(dbe, struct tables, dbe); 1413 u64 comm_db_id = cr->comm ? cr->comm->db_id : 0; 1414 PyObject *t; 1415 1416 t = tuple_new(14); 1417 1418 tuple_set_d64(t, 0, cr->db_id); 1419 tuple_set_d64(t, 1, thread__db_id(cr->thread)); 1420 tuple_set_d64(t, 2, comm_db_id); 1421 tuple_set_d64(t, 3, cr->cp->db_id); 1422 tuple_set_d64(t, 4, cr->call_time); 1423 tuple_set_d64(t, 5, cr->return_time); 1424 tuple_set_d64(t, 6, cr->branch_count); 1425 tuple_set_d64(t, 7, cr->call_ref); 1426 tuple_set_d64(t, 8, cr->return_ref); 1427 tuple_set_d64(t, 9, cr->cp->parent->db_id); 1428 tuple_set_s32(t, 10, cr->flags); 1429 tuple_set_d64(t, 11, cr->parent_db_id); 1430 tuple_set_d64(t, 12, cr->insn_count); 1431 tuple_set_d64(t, 13, cr->cyc_count); 1432 1433 call_object(tables->call_return_handler, t, "call_return_table"); 1434 1435 Py_DECREF(t); 1436 1437 return 0; 1438 } 1439 1440 static int python_export_context_switch(struct db_export *dbe, u64 db_id, 1441 struct machine *machine, 1442 struct perf_sample *sample, 1443 u64 th_out_id, u64 comm_out_id, 1444 u64 th_in_id, u64 comm_in_id, int flags) 1445 { 1446 struct tables *tables = container_of(dbe, struct tables, dbe); 1447 PyObject *t; 1448 1449 t = tuple_new(9); 1450 1451 tuple_set_d64(t, 0, db_id); 1452 tuple_set_d64(t, 1, machine->db_id); 1453 tuple_set_d64(t, 2, sample->time); 1454 tuple_set_s32(t, 3, sample->cpu); 1455 tuple_set_d64(t, 4, th_out_id); 1456 tuple_set_d64(t, 5, comm_out_id); 1457 tuple_set_d64(t, 6, th_in_id); 1458 tuple_set_d64(t, 7, comm_in_id); 1459 tuple_set_s32(t, 8, flags); 1460 1461 call_object(tables->context_switch_handler, t, "context_switch"); 1462 1463 Py_DECREF(t); 1464 1465 return 0; 1466 } 1467 1468 static int python_process_call_return(struct call_return *cr, u64 *parent_db_id, 1469 void *data) 1470 { 1471 struct db_export *dbe = data; 1472 1473 return db_export__call_return(dbe, cr, parent_db_id); 1474 } 1475 1476 static void python_process_general_event(struct perf_sample *sample, 1477 struct evsel *evsel, 1478 struct addr_location *al, 1479 struct addr_location *addr_al) 1480 { 1481 PyObject *handler, *t, *dict, *callchain; 1482 static char handler_name[64]; 1483 unsigned n = 0; 1484 1485 snprintf(handler_name, sizeof(handler_name), "%s", "process_event"); 1486 1487 handler = get_handler(handler_name); 1488 if (!handler) 1489 return; 1490 1491 /* 1492 * Use the MAX_FIELDS to make the function expandable, though 1493 * currently there is only one item for the tuple. 1494 */ 1495 t = PyTuple_New(MAX_FIELDS); 1496 if (!t) 1497 Py_FatalError("couldn't create Python tuple"); 1498 1499 /* ip unwinding */ 1500 callchain = python_process_callchain(sample, evsel, al); 1501 dict = get_perf_sample_dict(sample, evsel, al, addr_al, callchain); 1502 1503 PyTuple_SetItem(t, n++, dict); 1504 if (_PyTuple_Resize(&t, n) == -1) 1505 Py_FatalError("error resizing Python tuple"); 1506 1507 call_object(handler, t, handler_name); 1508 1509 Py_DECREF(t); 1510 } 1511 1512 static void python_process_event(union perf_event *event, 1513 struct perf_sample *sample, 1514 struct evsel *evsel, 1515 struct addr_location *al, 1516 struct addr_location *addr_al) 1517 { 1518 struct tables *tables = &tables_global; 1519 1520 scripting_context__update(scripting_context, event, sample, evsel, al, addr_al); 1521 1522 switch (evsel->core.attr.type) { 1523 case PERF_TYPE_TRACEPOINT: 1524 python_process_tracepoint(sample, evsel, al, addr_al); 1525 break; 1526 /* Reserve for future process_hw/sw/raw APIs */ 1527 default: 1528 if (tables->db_export_mode) 1529 db_export__sample(&tables->dbe, event, sample, evsel, al, addr_al); 1530 else 1531 python_process_general_event(sample, evsel, al, addr_al); 1532 } 1533 } 1534 1535 static void python_process_throttle(union perf_event *event, 1536 struct perf_sample *sample, 1537 struct machine *machine) 1538 { 1539 const char *handler_name; 1540 PyObject *handler, *t; 1541 1542 if (event->header.type == PERF_RECORD_THROTTLE) 1543 handler_name = "throttle"; 1544 else 1545 handler_name = "unthrottle"; 1546 handler = get_handler(handler_name); 1547 if (!handler) 1548 return; 1549 1550 t = tuple_new(6); 1551 if (!t) 1552 return; 1553 1554 tuple_set_u64(t, 0, event->throttle.time); 1555 tuple_set_u64(t, 1, event->throttle.id); 1556 tuple_set_u64(t, 2, event->throttle.stream_id); 1557 tuple_set_s32(t, 3, sample->cpu); 1558 tuple_set_s32(t, 4, sample->pid); 1559 tuple_set_s32(t, 5, sample->tid); 1560 1561 call_object(handler, t, handler_name); 1562 1563 Py_DECREF(t); 1564 } 1565 1566 static void python_do_process_switch(union perf_event *event, 1567 struct perf_sample *sample, 1568 struct machine *machine) 1569 { 1570 const char *handler_name = "context_switch"; 1571 bool out = event->header.misc & PERF_RECORD_MISC_SWITCH_OUT; 1572 bool out_preempt = out && (event->header.misc & PERF_RECORD_MISC_SWITCH_OUT_PREEMPT); 1573 pid_t np_pid = -1, np_tid = -1; 1574 PyObject *handler, *t; 1575 1576 handler = get_handler(handler_name); 1577 if (!handler) 1578 return; 1579 1580 if (event->header.type == PERF_RECORD_SWITCH_CPU_WIDE) { 1581 np_pid = event->context_switch.next_prev_pid; 1582 np_tid = event->context_switch.next_prev_tid; 1583 } 1584 1585 t = tuple_new(11); 1586 if (!t) 1587 return; 1588 1589 tuple_set_u64(t, 0, sample->time); 1590 tuple_set_s32(t, 1, sample->cpu); 1591 tuple_set_s32(t, 2, sample->pid); 1592 tuple_set_s32(t, 3, sample->tid); 1593 tuple_set_s32(t, 4, np_pid); 1594 tuple_set_s32(t, 5, np_tid); 1595 tuple_set_s32(t, 6, machine->pid); 1596 tuple_set_bool(t, 7, out); 1597 tuple_set_bool(t, 8, out_preempt); 1598 tuple_set_s32(t, 9, sample->machine_pid); 1599 tuple_set_s32(t, 10, sample->vcpu); 1600 1601 call_object(handler, t, handler_name); 1602 1603 Py_DECREF(t); 1604 } 1605 1606 static void python_process_switch(union perf_event *event, 1607 struct perf_sample *sample, 1608 struct machine *machine) 1609 { 1610 struct tables *tables = &tables_global; 1611 1612 if (tables->db_export_mode) 1613 db_export__switch(&tables->dbe, event, sample, machine); 1614 else 1615 python_do_process_switch(event, sample, machine); 1616 } 1617 1618 static void python_process_auxtrace_error(struct perf_session *session __maybe_unused, 1619 union perf_event *event) 1620 { 1621 struct perf_record_auxtrace_error *e = &event->auxtrace_error; 1622 u8 cpumode = e->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; 1623 const char *handler_name = "auxtrace_error"; 1624 unsigned long long tm = e->time; 1625 const char *msg = e->msg; 1626 PyObject *handler, *t; 1627 1628 handler = get_handler(handler_name); 1629 if (!handler) 1630 return; 1631 1632 if (!e->fmt) { 1633 tm = 0; 1634 msg = (const char *)&e->time; 1635 } 1636 1637 t = tuple_new(11); 1638 1639 tuple_set_u32(t, 0, e->type); 1640 tuple_set_u32(t, 1, e->code); 1641 tuple_set_s32(t, 2, e->cpu); 1642 tuple_set_s32(t, 3, e->pid); 1643 tuple_set_s32(t, 4, e->tid); 1644 tuple_set_u64(t, 5, e->ip); 1645 tuple_set_u64(t, 6, tm); 1646 tuple_set_string(t, 7, msg); 1647 tuple_set_u32(t, 8, cpumode); 1648 tuple_set_s32(t, 9, e->machine_pid); 1649 tuple_set_s32(t, 10, e->vcpu); 1650 1651 call_object(handler, t, handler_name); 1652 1653 Py_DECREF(t); 1654 } 1655 1656 static void get_handler_name(char *str, size_t size, 1657 struct evsel *evsel) 1658 { 1659 char *p = str; 1660 1661 scnprintf(str, size, "stat__%s", evsel__name(evsel)); 1662 1663 while ((p = strchr(p, ':'))) { 1664 *p = '_'; 1665 p++; 1666 } 1667 } 1668 1669 static void 1670 process_stat(struct evsel *counter, struct perf_cpu cpu, int thread, u64 tstamp, 1671 struct perf_counts_values *count) 1672 { 1673 PyObject *handler, *t; 1674 static char handler_name[256]; 1675 int n = 0; 1676 1677 t = PyTuple_New(MAX_FIELDS); 1678 if (!t) 1679 Py_FatalError("couldn't create Python tuple"); 1680 1681 get_handler_name(handler_name, sizeof(handler_name), 1682 counter); 1683 1684 handler = get_handler(handler_name); 1685 if (!handler) { 1686 pr_debug("can't find python handler %s\n", handler_name); 1687 return; 1688 } 1689 1690 PyTuple_SetItem(t, n++, _PyLong_FromLong(cpu.cpu)); 1691 PyTuple_SetItem(t, n++, _PyLong_FromLong(thread)); 1692 1693 tuple_set_u64(t, n++, tstamp); 1694 tuple_set_u64(t, n++, count->val); 1695 tuple_set_u64(t, n++, count->ena); 1696 tuple_set_u64(t, n++, count->run); 1697 1698 if (_PyTuple_Resize(&t, n) == -1) 1699 Py_FatalError("error resizing Python tuple"); 1700 1701 call_object(handler, t, handler_name); 1702 1703 Py_DECREF(t); 1704 } 1705 1706 static void python_process_stat(struct perf_stat_config *config, 1707 struct evsel *counter, u64 tstamp) 1708 { 1709 struct perf_thread_map *threads = counter->core.threads; 1710 struct perf_cpu_map *cpus = counter->core.cpus; 1711 1712 for (int thread = 0; thread < perf_thread_map__nr(threads); thread++) { 1713 int idx; 1714 struct perf_cpu cpu; 1715 1716 perf_cpu_map__for_each_cpu(cpu, idx, cpus) { 1717 process_stat(counter, cpu, 1718 perf_thread_map__pid(threads, thread), tstamp, 1719 perf_counts(counter->counts, idx, thread)); 1720 } 1721 } 1722 } 1723 1724 static void python_process_stat_interval(u64 tstamp) 1725 { 1726 PyObject *handler, *t; 1727 static const char handler_name[] = "stat__interval"; 1728 int n = 0; 1729 1730 t = PyTuple_New(MAX_FIELDS); 1731 if (!t) 1732 Py_FatalError("couldn't create Python tuple"); 1733 1734 handler = get_handler(handler_name); 1735 if (!handler) { 1736 pr_debug("can't find python handler %s\n", handler_name); 1737 return; 1738 } 1739 1740 tuple_set_u64(t, n++, tstamp); 1741 1742 if (_PyTuple_Resize(&t, n) == -1) 1743 Py_FatalError("error resizing Python tuple"); 1744 1745 call_object(handler, t, handler_name); 1746 1747 Py_DECREF(t); 1748 } 1749 1750 static int perf_script_context_init(void) 1751 { 1752 PyObject *perf_script_context; 1753 PyObject *perf_trace_context; 1754 PyObject *dict; 1755 int ret; 1756 1757 perf_trace_context = PyImport_AddModule("perf_trace_context"); 1758 if (!perf_trace_context) 1759 return -1; 1760 dict = PyModule_GetDict(perf_trace_context); 1761 if (!dict) 1762 return -1; 1763 1764 perf_script_context = _PyCapsule_New(scripting_context, NULL, NULL); 1765 if (!perf_script_context) 1766 return -1; 1767 1768 ret = PyDict_SetItemString(dict, "perf_script_context", perf_script_context); 1769 if (!ret) 1770 ret = PyDict_SetItemString(main_dict, "perf_script_context", perf_script_context); 1771 Py_DECREF(perf_script_context); 1772 return ret; 1773 } 1774 1775 static int run_start_sub(void) 1776 { 1777 main_module = PyImport_AddModule("__main__"); 1778 if (main_module == NULL) 1779 return -1; 1780 Py_INCREF(main_module); 1781 1782 main_dict = PyModule_GetDict(main_module); 1783 if (main_dict == NULL) 1784 goto error; 1785 Py_INCREF(main_dict); 1786 1787 if (perf_script_context_init()) 1788 goto error; 1789 1790 try_call_object("trace_begin", NULL); 1791 1792 return 0; 1793 1794 error: 1795 Py_XDECREF(main_dict); 1796 Py_XDECREF(main_module); 1797 return -1; 1798 } 1799 1800 #define SET_TABLE_HANDLER_(name, handler_name, table_name) do { \ 1801 tables->handler_name = get_handler(#table_name); \ 1802 if (tables->handler_name) \ 1803 tables->dbe.export_ ## name = python_export_ ## name; \ 1804 } while (0) 1805 1806 #define SET_TABLE_HANDLER(name) \ 1807 SET_TABLE_HANDLER_(name, name ## _handler, name ## _table) 1808 1809 static void set_table_handlers(struct tables *tables) 1810 { 1811 const char *perf_db_export_mode = "perf_db_export_mode"; 1812 const char *perf_db_export_calls = "perf_db_export_calls"; 1813 const char *perf_db_export_callchains = "perf_db_export_callchains"; 1814 PyObject *db_export_mode, *db_export_calls, *db_export_callchains; 1815 bool export_calls = false; 1816 bool export_callchains = false; 1817 int ret; 1818 1819 memset(tables, 0, sizeof(struct tables)); 1820 if (db_export__init(&tables->dbe)) 1821 Py_FatalError("failed to initialize export"); 1822 1823 db_export_mode = PyDict_GetItemString(main_dict, perf_db_export_mode); 1824 if (!db_export_mode) 1825 return; 1826 1827 ret = PyObject_IsTrue(db_export_mode); 1828 if (ret == -1) 1829 handler_call_die(perf_db_export_mode); 1830 if (!ret) 1831 return; 1832 1833 /* handle export calls */ 1834 tables->dbe.crp = NULL; 1835 db_export_calls = PyDict_GetItemString(main_dict, perf_db_export_calls); 1836 if (db_export_calls) { 1837 ret = PyObject_IsTrue(db_export_calls); 1838 if (ret == -1) 1839 handler_call_die(perf_db_export_calls); 1840 export_calls = !!ret; 1841 } 1842 1843 if (export_calls) { 1844 tables->dbe.crp = 1845 call_return_processor__new(python_process_call_return, 1846 &tables->dbe); 1847 if (!tables->dbe.crp) 1848 Py_FatalError("failed to create calls processor"); 1849 } 1850 1851 /* handle export callchains */ 1852 tables->dbe.cpr = NULL; 1853 db_export_callchains = PyDict_GetItemString(main_dict, 1854 perf_db_export_callchains); 1855 if (db_export_callchains) { 1856 ret = PyObject_IsTrue(db_export_callchains); 1857 if (ret == -1) 1858 handler_call_die(perf_db_export_callchains); 1859 export_callchains = !!ret; 1860 } 1861 1862 if (export_callchains) { 1863 /* 1864 * Attempt to use the call path root from the call return 1865 * processor, if the call return processor is in use. Otherwise, 1866 * we allocate a new call path root. This prevents exporting 1867 * duplicate call path ids when both are in use simultaneously. 1868 */ 1869 if (tables->dbe.crp) 1870 tables->dbe.cpr = tables->dbe.crp->cpr; 1871 else 1872 tables->dbe.cpr = call_path_root__new(); 1873 1874 if (!tables->dbe.cpr) 1875 Py_FatalError("failed to create call path root"); 1876 } 1877 1878 tables->db_export_mode = true; 1879 /* 1880 * Reserve per symbol space for symbol->db_id via symbol__priv() 1881 */ 1882 symbol_conf.priv_size = sizeof(u64); 1883 1884 SET_TABLE_HANDLER(evsel); 1885 SET_TABLE_HANDLER(machine); 1886 SET_TABLE_HANDLER(thread); 1887 SET_TABLE_HANDLER(comm); 1888 SET_TABLE_HANDLER(comm_thread); 1889 SET_TABLE_HANDLER(dso); 1890 SET_TABLE_HANDLER(symbol); 1891 SET_TABLE_HANDLER(branch_type); 1892 SET_TABLE_HANDLER(sample); 1893 SET_TABLE_HANDLER(call_path); 1894 SET_TABLE_HANDLER(call_return); 1895 SET_TABLE_HANDLER(context_switch); 1896 1897 /* 1898 * Synthesized events are samples but with architecture-specific data 1899 * stored in sample->raw_data. They are exported via 1900 * python_export_sample() and consequently do not need a separate export 1901 * callback. 1902 */ 1903 tables->synth_handler = get_handler("synth_data"); 1904 } 1905 1906 #if PY_MAJOR_VERSION < 3 1907 static void _free_command_line(const char **command_line, int num) 1908 { 1909 free(command_line); 1910 } 1911 #else 1912 static void _free_command_line(wchar_t **command_line, int num) 1913 { 1914 int i; 1915 for (i = 0; i < num; i++) 1916 PyMem_RawFree(command_line[i]); 1917 free(command_line); 1918 } 1919 #endif 1920 1921 1922 /* 1923 * Start trace script 1924 */ 1925 static int python_start_script(const char *script, int argc, const char **argv, 1926 struct perf_session *session) 1927 { 1928 struct tables *tables = &tables_global; 1929 #if PY_MAJOR_VERSION < 3 1930 const char **command_line; 1931 #else 1932 wchar_t **command_line; 1933 #endif 1934 /* 1935 * Use a non-const name variable to cope with python 2.6's 1936 * PyImport_AppendInittab prototype 1937 */ 1938 char buf[PATH_MAX], name[19] = "perf_trace_context"; 1939 int i, err = 0; 1940 FILE *fp; 1941 1942 scripting_context->session = session; 1943 #if PY_MAJOR_VERSION < 3 1944 command_line = malloc((argc + 1) * sizeof(const char *)); 1945 if (!command_line) 1946 return -1; 1947 1948 command_line[0] = script; 1949 for (i = 1; i < argc + 1; i++) 1950 command_line[i] = argv[i - 1]; 1951 PyImport_AppendInittab(name, initperf_trace_context); 1952 #else 1953 command_line = malloc((argc + 1) * sizeof(wchar_t *)); 1954 if (!command_line) 1955 return -1; 1956 1957 command_line[0] = Py_DecodeLocale(script, NULL); 1958 for (i = 1; i < argc + 1; i++) 1959 command_line[i] = Py_DecodeLocale(argv[i - 1], NULL); 1960 PyImport_AppendInittab(name, PyInit_perf_trace_context); 1961 #endif 1962 Py_Initialize(); 1963 1964 #if PY_MAJOR_VERSION < 3 1965 PySys_SetArgv(argc + 1, (char **)command_line); 1966 #else 1967 PySys_SetArgv(argc + 1, command_line); 1968 #endif 1969 1970 fp = fopen(script, "r"); 1971 if (!fp) { 1972 sprintf(buf, "Can't open python script \"%s\"", script); 1973 perror(buf); 1974 err = -1; 1975 goto error; 1976 } 1977 1978 err = PyRun_SimpleFile(fp, script); 1979 if (err) { 1980 fprintf(stderr, "Error running python script %s\n", script); 1981 goto error; 1982 } 1983 1984 err = run_start_sub(); 1985 if (err) { 1986 fprintf(stderr, "Error starting python script %s\n", script); 1987 goto error; 1988 } 1989 1990 set_table_handlers(tables); 1991 1992 if (tables->db_export_mode) { 1993 err = db_export__branch_types(&tables->dbe); 1994 if (err) 1995 goto error; 1996 } 1997 1998 _free_command_line(command_line, argc + 1); 1999 2000 return err; 2001 error: 2002 Py_Finalize(); 2003 _free_command_line(command_line, argc + 1); 2004 2005 return err; 2006 } 2007 2008 static int python_flush_script(void) 2009 { 2010 return 0; 2011 } 2012 2013 /* 2014 * Stop trace script 2015 */ 2016 static int python_stop_script(void) 2017 { 2018 struct tables *tables = &tables_global; 2019 2020 try_call_object("trace_end", NULL); 2021 2022 db_export__exit(&tables->dbe); 2023 2024 Py_XDECREF(main_dict); 2025 Py_XDECREF(main_module); 2026 Py_Finalize(); 2027 2028 return 0; 2029 } 2030 2031 #ifdef HAVE_LIBTRACEEVENT 2032 static int python_generate_script(struct tep_handle *pevent, const char *outfile) 2033 { 2034 int i, not_first, count, nr_events; 2035 struct tep_event **all_events; 2036 struct tep_event *event = NULL; 2037 struct tep_format_field *f; 2038 char fname[PATH_MAX]; 2039 FILE *ofp; 2040 2041 sprintf(fname, "%s.py", outfile); 2042 ofp = fopen(fname, "w"); 2043 if (ofp == NULL) { 2044 fprintf(stderr, "couldn't open %s\n", fname); 2045 return -1; 2046 } 2047 fprintf(ofp, "# perf script event handlers, " 2048 "generated by perf script -g python\n"); 2049 2050 fprintf(ofp, "# Licensed under the terms of the GNU GPL" 2051 " License version 2\n\n"); 2052 2053 fprintf(ofp, "# The common_* event handler fields are the most useful " 2054 "fields common to\n"); 2055 2056 fprintf(ofp, "# all events. They don't necessarily correspond to " 2057 "the 'common_*' fields\n"); 2058 2059 fprintf(ofp, "# in the format files. Those fields not available as " 2060 "handler params can\n"); 2061 2062 fprintf(ofp, "# be retrieved using Python functions of the form " 2063 "common_*(context).\n"); 2064 2065 fprintf(ofp, "# See the perf-script-python Documentation for the list " 2066 "of available functions.\n\n"); 2067 2068 fprintf(ofp, "from __future__ import print_function\n\n"); 2069 fprintf(ofp, "import os\n"); 2070 fprintf(ofp, "import sys\n\n"); 2071 2072 fprintf(ofp, "sys.path.append(os.environ['PERF_EXEC_PATH'] + \\\n"); 2073 fprintf(ofp, "\t'/scripts/python/Perf-Trace-Util/lib/Perf/Trace')\n"); 2074 fprintf(ofp, "\nfrom perf_trace_context import *\n"); 2075 fprintf(ofp, "from Core import *\n\n\n"); 2076 2077 fprintf(ofp, "def trace_begin():\n"); 2078 fprintf(ofp, "\tprint(\"in trace_begin\")\n\n"); 2079 2080 fprintf(ofp, "def trace_end():\n"); 2081 fprintf(ofp, "\tprint(\"in trace_end\")\n\n"); 2082 2083 nr_events = tep_get_events_count(pevent); 2084 all_events = tep_list_events(pevent, TEP_EVENT_SORT_ID); 2085 2086 for (i = 0; all_events && i < nr_events; i++) { 2087 event = all_events[i]; 2088 fprintf(ofp, "def %s__%s(", event->system, event->name); 2089 fprintf(ofp, "event_name, "); 2090 fprintf(ofp, "context, "); 2091 fprintf(ofp, "common_cpu,\n"); 2092 fprintf(ofp, "\tcommon_secs, "); 2093 fprintf(ofp, "common_nsecs, "); 2094 fprintf(ofp, "common_pid, "); 2095 fprintf(ofp, "common_comm,\n\t"); 2096 fprintf(ofp, "common_callchain, "); 2097 2098 not_first = 0; 2099 count = 0; 2100 2101 for (f = event->format.fields; f; f = f->next) { 2102 if (not_first++) 2103 fprintf(ofp, ", "); 2104 if (++count % 5 == 0) 2105 fprintf(ofp, "\n\t"); 2106 2107 fprintf(ofp, "%s", f->name); 2108 } 2109 if (not_first++) 2110 fprintf(ofp, ", "); 2111 if (++count % 5 == 0) 2112 fprintf(ofp, "\n\t\t"); 2113 fprintf(ofp, "perf_sample_dict"); 2114 2115 fprintf(ofp, "):\n"); 2116 2117 fprintf(ofp, "\t\tprint_header(event_name, common_cpu, " 2118 "common_secs, common_nsecs,\n\t\t\t" 2119 "common_pid, common_comm)\n\n"); 2120 2121 fprintf(ofp, "\t\tprint(\""); 2122 2123 not_first = 0; 2124 count = 0; 2125 2126 for (f = event->format.fields; f; f = f->next) { 2127 if (not_first++) 2128 fprintf(ofp, ", "); 2129 if (count && count % 3 == 0) { 2130 fprintf(ofp, "\" \\\n\t\t\""); 2131 } 2132 count++; 2133 2134 fprintf(ofp, "%s=", f->name); 2135 if (f->flags & TEP_FIELD_IS_STRING || 2136 f->flags & TEP_FIELD_IS_FLAG || 2137 f->flags & TEP_FIELD_IS_ARRAY || 2138 f->flags & TEP_FIELD_IS_SYMBOLIC) 2139 fprintf(ofp, "%%s"); 2140 else if (f->flags & TEP_FIELD_IS_SIGNED) 2141 fprintf(ofp, "%%d"); 2142 else 2143 fprintf(ofp, "%%u"); 2144 } 2145 2146 fprintf(ofp, "\" %% \\\n\t\t("); 2147 2148 not_first = 0; 2149 count = 0; 2150 2151 for (f = event->format.fields; f; f = f->next) { 2152 if (not_first++) 2153 fprintf(ofp, ", "); 2154 2155 if (++count % 5 == 0) 2156 fprintf(ofp, "\n\t\t"); 2157 2158 if (f->flags & TEP_FIELD_IS_FLAG) { 2159 if ((count - 1) % 5 != 0) { 2160 fprintf(ofp, "\n\t\t"); 2161 count = 4; 2162 } 2163 fprintf(ofp, "flag_str(\""); 2164 fprintf(ofp, "%s__%s\", ", event->system, 2165 event->name); 2166 fprintf(ofp, "\"%s\", %s)", f->name, 2167 f->name); 2168 } else if (f->flags & TEP_FIELD_IS_SYMBOLIC) { 2169 if ((count - 1) % 5 != 0) { 2170 fprintf(ofp, "\n\t\t"); 2171 count = 4; 2172 } 2173 fprintf(ofp, "symbol_str(\""); 2174 fprintf(ofp, "%s__%s\", ", event->system, 2175 event->name); 2176 fprintf(ofp, "\"%s\", %s)", f->name, 2177 f->name); 2178 } else 2179 fprintf(ofp, "%s", f->name); 2180 } 2181 2182 fprintf(ofp, "))\n\n"); 2183 2184 fprintf(ofp, "\t\tprint('Sample: {'+" 2185 "get_dict_as_string(perf_sample_dict['sample'], ', ')+'}')\n\n"); 2186 2187 fprintf(ofp, "\t\tfor node in common_callchain:"); 2188 fprintf(ofp, "\n\t\t\tif 'sym' in node:"); 2189 fprintf(ofp, "\n\t\t\t\tprint(\"\t[%%x] %%s%%s%%s%%s\" %% ("); 2190 fprintf(ofp, "\n\t\t\t\t\tnode['ip'], node['sym']['name'],"); 2191 fprintf(ofp, "\n\t\t\t\t\t\"+0x{:x}\".format(node['sym_off']) if 'sym_off' in node else \"\","); 2192 fprintf(ofp, "\n\t\t\t\t\t\" ({})\".format(node['dso']) if 'dso' in node else \"\","); 2193 fprintf(ofp, "\n\t\t\t\t\t\" \" + node['sym_srcline'] if 'sym_srcline' in node else \"\"))"); 2194 fprintf(ofp, "\n\t\t\telse:"); 2195 fprintf(ofp, "\n\t\t\t\tprint(\"\t[%%x]\" %% (node['ip']))\n\n"); 2196 fprintf(ofp, "\t\tprint()\n\n"); 2197 2198 } 2199 2200 fprintf(ofp, "def trace_unhandled(event_name, context, " 2201 "event_fields_dict, perf_sample_dict):\n"); 2202 2203 fprintf(ofp, "\t\tprint(get_dict_as_string(event_fields_dict))\n"); 2204 fprintf(ofp, "\t\tprint('Sample: {'+" 2205 "get_dict_as_string(perf_sample_dict['sample'], ', ')+'}')\n\n"); 2206 2207 fprintf(ofp, "def print_header(" 2208 "event_name, cpu, secs, nsecs, pid, comm):\n" 2209 "\tprint(\"%%-20s %%5u %%05u.%%09u %%8u %%-20s \" %% \\\n\t" 2210 "(event_name, cpu, secs, nsecs, pid, comm), end=\"\")\n\n"); 2211 2212 fprintf(ofp, "def get_dict_as_string(a_dict, delimiter=' '):\n" 2213 "\treturn delimiter.join" 2214 "(['%%s=%%s'%%(k,str(v))for k,v in sorted(a_dict.items())])\n"); 2215 2216 fclose(ofp); 2217 2218 fprintf(stderr, "generated Python script: %s\n", fname); 2219 2220 return 0; 2221 } 2222 #else 2223 static int python_generate_script(struct tep_handle *pevent __maybe_unused, 2224 const char *outfile __maybe_unused) 2225 { 2226 fprintf(stderr, "Generating Python perf-script is not supported." 2227 " Install libtraceevent and rebuild perf to enable it.\n" 2228 "For example:\n # apt install libtraceevent-dev (ubuntu)" 2229 "\n # yum install libtraceevent-devel (Fedora)" 2230 "\n etc.\n"); 2231 return -1; 2232 } 2233 #endif 2234 2235 struct scripting_ops python_scripting_ops = { 2236 .name = "Python", 2237 .dirname = "python", 2238 .start_script = python_start_script, 2239 .flush_script = python_flush_script, 2240 .stop_script = python_stop_script, 2241 .process_event = python_process_event, 2242 .process_switch = python_process_switch, 2243 .process_auxtrace_error = python_process_auxtrace_error, 2244 .process_stat = python_process_stat, 2245 .process_stat_interval = python_process_stat_interval, 2246 .process_throttle = python_process_throttle, 2247 .generate_script = python_generate_script, 2248 }; 2249