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