1 // SPDX-License-Identifier: GPL-2.0 2 #include <Python.h> 3 #include <structmember.h> 4 #include <inttypes.h> 5 #include <poll.h> 6 #include <linux/err.h> 7 #include <perf/cpumap.h> 8 #ifdef HAVE_LIBTRACEEVENT 9 #include <event-parse.h> 10 #endif 11 #include <perf/mmap.h> 12 #include "callchain.h" 13 #include "evlist.h" 14 #include "evsel.h" 15 #include "event.h" 16 #include "print_binary.h" 17 #include "record.h" 18 #include "strbuf.h" 19 #include "thread_map.h" 20 #include "trace-event.h" 21 #include "mmap.h" 22 #include "util/sample.h" 23 #include <internal/lib.h> 24 25 PyMODINIT_FUNC PyInit_perf(void); 26 27 #define member_def(type, member, ptype, help) \ 28 { #member, ptype, \ 29 offsetof(struct pyrf_event, event) + offsetof(struct type, member), \ 30 0, help } 31 32 #define sample_member_def(name, member, ptype, help) \ 33 { #name, ptype, \ 34 offsetof(struct pyrf_event, sample) + offsetof(struct perf_sample, member), \ 35 0, help } 36 37 struct pyrf_event { 38 PyObject_HEAD 39 struct evsel *evsel; 40 struct perf_sample sample; 41 union perf_event event; 42 }; 43 44 #define sample_members \ 45 sample_member_def(sample_ip, ip, T_ULONGLONG, "event ip"), \ 46 sample_member_def(sample_pid, pid, T_INT, "event pid"), \ 47 sample_member_def(sample_tid, tid, T_INT, "event tid"), \ 48 sample_member_def(sample_time, time, T_ULONGLONG, "event timestamp"), \ 49 sample_member_def(sample_addr, addr, T_ULONGLONG, "event addr"), \ 50 sample_member_def(sample_id, id, T_ULONGLONG, "event id"), \ 51 sample_member_def(sample_stream_id, stream_id, T_ULONGLONG, "event stream id"), \ 52 sample_member_def(sample_period, period, T_ULONGLONG, "event period"), \ 53 sample_member_def(sample_cpu, cpu, T_UINT, "event cpu"), 54 55 static const char pyrf_mmap_event__doc[] = PyDoc_STR("perf mmap event object."); 56 57 static PyMemberDef pyrf_mmap_event__members[] = { 58 sample_members 59 member_def(perf_event_header, type, T_UINT, "event type"), 60 member_def(perf_event_header, misc, T_UINT, "event misc"), 61 member_def(perf_record_mmap, pid, T_UINT, "event pid"), 62 member_def(perf_record_mmap, tid, T_UINT, "event tid"), 63 member_def(perf_record_mmap, start, T_ULONGLONG, "start of the map"), 64 member_def(perf_record_mmap, len, T_ULONGLONG, "map length"), 65 member_def(perf_record_mmap, pgoff, T_ULONGLONG, "page offset"), 66 member_def(perf_record_mmap, filename, T_STRING_INPLACE, "backing store"), 67 { .name = NULL, }, 68 }; 69 70 static PyObject *pyrf_mmap_event__repr(const struct pyrf_event *pevent) 71 { 72 PyObject *ret; 73 char *s; 74 75 if (asprintf(&s, "{ type: mmap, pid: %u, tid: %u, start: %#" PRI_lx64 ", " 76 "length: %#" PRI_lx64 ", offset: %#" PRI_lx64 ", " 77 "filename: %s }", 78 pevent->event.mmap.pid, pevent->event.mmap.tid, 79 pevent->event.mmap.start, pevent->event.mmap.len, 80 pevent->event.mmap.pgoff, pevent->event.mmap.filename) < 0) { 81 ret = PyErr_NoMemory(); 82 } else { 83 ret = PyUnicode_FromString(s); 84 free(s); 85 } 86 return ret; 87 } 88 89 static PyTypeObject pyrf_mmap_event__type = { 90 PyVarObject_HEAD_INIT(NULL, 0) 91 .tp_name = "perf.mmap_event", 92 .tp_basicsize = sizeof(struct pyrf_event), 93 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE, 94 .tp_doc = pyrf_mmap_event__doc, 95 .tp_members = pyrf_mmap_event__members, 96 .tp_repr = (reprfunc)pyrf_mmap_event__repr, 97 }; 98 99 static const char pyrf_task_event__doc[] = PyDoc_STR("perf task (fork/exit) event object."); 100 101 static PyMemberDef pyrf_task_event__members[] = { 102 sample_members 103 member_def(perf_event_header, type, T_UINT, "event type"), 104 member_def(perf_record_fork, pid, T_UINT, "event pid"), 105 member_def(perf_record_fork, ppid, T_UINT, "event ppid"), 106 member_def(perf_record_fork, tid, T_UINT, "event tid"), 107 member_def(perf_record_fork, ptid, T_UINT, "event ptid"), 108 member_def(perf_record_fork, time, T_ULONGLONG, "timestamp"), 109 { .name = NULL, }, 110 }; 111 112 static PyObject *pyrf_task_event__repr(const struct pyrf_event *pevent) 113 { 114 return PyUnicode_FromFormat("{ type: %s, pid: %u, ppid: %u, tid: %u, " 115 "ptid: %u, time: %" PRI_lu64 "}", 116 pevent->event.header.type == PERF_RECORD_FORK ? "fork" : "exit", 117 pevent->event.fork.pid, 118 pevent->event.fork.ppid, 119 pevent->event.fork.tid, 120 pevent->event.fork.ptid, 121 pevent->event.fork.time); 122 } 123 124 static PyTypeObject pyrf_task_event__type = { 125 PyVarObject_HEAD_INIT(NULL, 0) 126 .tp_name = "perf.task_event", 127 .tp_basicsize = sizeof(struct pyrf_event), 128 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE, 129 .tp_doc = pyrf_task_event__doc, 130 .tp_members = pyrf_task_event__members, 131 .tp_repr = (reprfunc)pyrf_task_event__repr, 132 }; 133 134 static const char pyrf_comm_event__doc[] = PyDoc_STR("perf comm event object."); 135 136 static PyMemberDef pyrf_comm_event__members[] = { 137 sample_members 138 member_def(perf_event_header, type, T_UINT, "event type"), 139 member_def(perf_record_comm, pid, T_UINT, "event pid"), 140 member_def(perf_record_comm, tid, T_UINT, "event tid"), 141 member_def(perf_record_comm, comm, T_STRING_INPLACE, "process name"), 142 { .name = NULL, }, 143 }; 144 145 static PyObject *pyrf_comm_event__repr(const struct pyrf_event *pevent) 146 { 147 return PyUnicode_FromFormat("{ type: comm, pid: %u, tid: %u, comm: %s }", 148 pevent->event.comm.pid, 149 pevent->event.comm.tid, 150 pevent->event.comm.comm); 151 } 152 153 static PyTypeObject pyrf_comm_event__type = { 154 PyVarObject_HEAD_INIT(NULL, 0) 155 .tp_name = "perf.comm_event", 156 .tp_basicsize = sizeof(struct pyrf_event), 157 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE, 158 .tp_doc = pyrf_comm_event__doc, 159 .tp_members = pyrf_comm_event__members, 160 .tp_repr = (reprfunc)pyrf_comm_event__repr, 161 }; 162 163 static const char pyrf_throttle_event__doc[] = PyDoc_STR("perf throttle event object."); 164 165 static PyMemberDef pyrf_throttle_event__members[] = { 166 sample_members 167 member_def(perf_event_header, type, T_UINT, "event type"), 168 member_def(perf_record_throttle, time, T_ULONGLONG, "timestamp"), 169 member_def(perf_record_throttle, id, T_ULONGLONG, "event id"), 170 member_def(perf_record_throttle, stream_id, T_ULONGLONG, "event stream id"), 171 { .name = NULL, }, 172 }; 173 174 static PyObject *pyrf_throttle_event__repr(const struct pyrf_event *pevent) 175 { 176 const struct perf_record_throttle *te = (const struct perf_record_throttle *) 177 (&pevent->event.header + 1); 178 179 return PyUnicode_FromFormat("{ type: %sthrottle, time: %" PRI_lu64 ", id: %" PRI_lu64 180 ", stream_id: %" PRI_lu64 " }", 181 pevent->event.header.type == PERF_RECORD_THROTTLE ? "" : "un", 182 te->time, te->id, te->stream_id); 183 } 184 185 static PyTypeObject pyrf_throttle_event__type = { 186 PyVarObject_HEAD_INIT(NULL, 0) 187 .tp_name = "perf.throttle_event", 188 .tp_basicsize = sizeof(struct pyrf_event), 189 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE, 190 .tp_doc = pyrf_throttle_event__doc, 191 .tp_members = pyrf_throttle_event__members, 192 .tp_repr = (reprfunc)pyrf_throttle_event__repr, 193 }; 194 195 static const char pyrf_lost_event__doc[] = PyDoc_STR("perf lost event object."); 196 197 static PyMemberDef pyrf_lost_event__members[] = { 198 sample_members 199 member_def(perf_record_lost, id, T_ULONGLONG, "event id"), 200 member_def(perf_record_lost, lost, T_ULONGLONG, "number of lost events"), 201 { .name = NULL, }, 202 }; 203 204 static PyObject *pyrf_lost_event__repr(const struct pyrf_event *pevent) 205 { 206 PyObject *ret; 207 char *s; 208 209 if (asprintf(&s, "{ type: lost, id: %#" PRI_lx64 ", " 210 "lost: %#" PRI_lx64 " }", 211 pevent->event.lost.id, pevent->event.lost.lost) < 0) { 212 ret = PyErr_NoMemory(); 213 } else { 214 ret = PyUnicode_FromString(s); 215 free(s); 216 } 217 return ret; 218 } 219 220 static PyTypeObject pyrf_lost_event__type = { 221 PyVarObject_HEAD_INIT(NULL, 0) 222 .tp_name = "perf.lost_event", 223 .tp_basicsize = sizeof(struct pyrf_event), 224 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE, 225 .tp_doc = pyrf_lost_event__doc, 226 .tp_members = pyrf_lost_event__members, 227 .tp_repr = (reprfunc)pyrf_lost_event__repr, 228 }; 229 230 static const char pyrf_read_event__doc[] = PyDoc_STR("perf read event object."); 231 232 static PyMemberDef pyrf_read_event__members[] = { 233 sample_members 234 member_def(perf_record_read, pid, T_UINT, "event pid"), 235 member_def(perf_record_read, tid, T_UINT, "event tid"), 236 { .name = NULL, }, 237 }; 238 239 static PyObject *pyrf_read_event__repr(const struct pyrf_event *pevent) 240 { 241 return PyUnicode_FromFormat("{ type: read, pid: %u, tid: %u }", 242 pevent->event.read.pid, 243 pevent->event.read.tid); 244 /* 245 * FIXME: return the array of read values, 246 * making this method useful ;-) 247 */ 248 } 249 250 static PyTypeObject pyrf_read_event__type = { 251 PyVarObject_HEAD_INIT(NULL, 0) 252 .tp_name = "perf.read_event", 253 .tp_basicsize = sizeof(struct pyrf_event), 254 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE, 255 .tp_doc = pyrf_read_event__doc, 256 .tp_members = pyrf_read_event__members, 257 .tp_repr = (reprfunc)pyrf_read_event__repr, 258 }; 259 260 static const char pyrf_sample_event__doc[] = PyDoc_STR("perf sample event object."); 261 262 static PyMemberDef pyrf_sample_event__members[] = { 263 sample_members 264 member_def(perf_event_header, type, T_UINT, "event type"), 265 { .name = NULL, }, 266 }; 267 268 static void pyrf_sample_event__delete(struct pyrf_event *pevent) 269 { 270 perf_sample__exit(&pevent->sample); 271 Py_TYPE(pevent)->tp_free((PyObject*)pevent); 272 } 273 274 static PyObject *pyrf_sample_event__repr(const struct pyrf_event *pevent) 275 { 276 PyObject *ret; 277 char *s; 278 279 if (asprintf(&s, "{ type: sample }") < 0) { 280 ret = PyErr_NoMemory(); 281 } else { 282 ret = PyUnicode_FromString(s); 283 free(s); 284 } 285 return ret; 286 } 287 288 #ifdef HAVE_LIBTRACEEVENT 289 static bool is_tracepoint(const struct pyrf_event *pevent) 290 { 291 return pevent->evsel->core.attr.type == PERF_TYPE_TRACEPOINT; 292 } 293 294 static PyObject* 295 tracepoint_field(const struct pyrf_event *pe, struct tep_format_field *field) 296 { 297 struct tep_handle *pevent = field->event->tep; 298 void *data = pe->sample.raw_data; 299 PyObject *ret = NULL; 300 unsigned long long val; 301 unsigned int offset, len; 302 303 if (field->flags & TEP_FIELD_IS_ARRAY) { 304 offset = field->offset; 305 len = field->size; 306 if (field->flags & TEP_FIELD_IS_DYNAMIC) { 307 val = tep_read_number(pevent, data + offset, len); 308 offset = val; 309 len = offset >> 16; 310 offset &= 0xffff; 311 if (tep_field_is_relative(field->flags)) 312 offset += field->offset + field->size; 313 } 314 if (field->flags & TEP_FIELD_IS_STRING && 315 is_printable_array(data + offset, len)) { 316 ret = PyUnicode_FromString((char *)data + offset); 317 } else { 318 ret = PyByteArray_FromStringAndSize((const char *) data + offset, len); 319 field->flags &= ~TEP_FIELD_IS_STRING; 320 } 321 } else { 322 val = tep_read_number(pevent, data + field->offset, 323 field->size); 324 if (field->flags & TEP_FIELD_IS_POINTER) 325 ret = PyLong_FromUnsignedLong((unsigned long) val); 326 else if (field->flags & TEP_FIELD_IS_SIGNED) 327 ret = PyLong_FromLong((long) val); 328 else 329 ret = PyLong_FromUnsignedLong((unsigned long) val); 330 } 331 332 return ret; 333 } 334 335 static PyObject* 336 get_tracepoint_field(struct pyrf_event *pevent, PyObject *attr_name) 337 { 338 const char *str = _PyUnicode_AsString(PyObject_Str(attr_name)); 339 struct evsel *evsel = pevent->evsel; 340 struct tep_event *tp_format = evsel__tp_format(evsel); 341 struct tep_format_field *field; 342 343 if (IS_ERR_OR_NULL(tp_format)) 344 return NULL; 345 346 field = tep_find_any_field(tp_format, str); 347 return field ? tracepoint_field(pevent, field) : NULL; 348 } 349 #endif /* HAVE_LIBTRACEEVENT */ 350 351 static PyObject* 352 pyrf_sample_event__getattro(struct pyrf_event *pevent, PyObject *attr_name) 353 { 354 PyObject *obj = NULL; 355 356 #ifdef HAVE_LIBTRACEEVENT 357 if (is_tracepoint(pevent)) 358 obj = get_tracepoint_field(pevent, attr_name); 359 #endif 360 361 return obj ?: PyObject_GenericGetAttr((PyObject *) pevent, attr_name); 362 } 363 364 static PyTypeObject pyrf_sample_event__type = { 365 PyVarObject_HEAD_INIT(NULL, 0) 366 .tp_name = "perf.sample_event", 367 .tp_basicsize = sizeof(struct pyrf_event), 368 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE, 369 .tp_doc = pyrf_sample_event__doc, 370 .tp_members = pyrf_sample_event__members, 371 .tp_repr = (reprfunc)pyrf_sample_event__repr, 372 .tp_getattro = (getattrofunc) pyrf_sample_event__getattro, 373 }; 374 375 static const char pyrf_context_switch_event__doc[] = PyDoc_STR("perf context_switch event object."); 376 377 static PyMemberDef pyrf_context_switch_event__members[] = { 378 sample_members 379 member_def(perf_event_header, type, T_UINT, "event type"), 380 member_def(perf_record_switch, next_prev_pid, T_UINT, "next/prev pid"), 381 member_def(perf_record_switch, next_prev_tid, T_UINT, "next/prev tid"), 382 { .name = NULL, }, 383 }; 384 385 static PyObject *pyrf_context_switch_event__repr(const struct pyrf_event *pevent) 386 { 387 PyObject *ret; 388 char *s; 389 390 if (asprintf(&s, "{ type: context_switch, next_prev_pid: %u, next_prev_tid: %u, switch_out: %u }", 391 pevent->event.context_switch.next_prev_pid, 392 pevent->event.context_switch.next_prev_tid, 393 !!(pevent->event.header.misc & PERF_RECORD_MISC_SWITCH_OUT)) < 0) { 394 ret = PyErr_NoMemory(); 395 } else { 396 ret = PyUnicode_FromString(s); 397 free(s); 398 } 399 return ret; 400 } 401 402 static PyTypeObject pyrf_context_switch_event__type = { 403 PyVarObject_HEAD_INIT(NULL, 0) 404 .tp_name = "perf.context_switch_event", 405 .tp_basicsize = sizeof(struct pyrf_event), 406 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE, 407 .tp_doc = pyrf_context_switch_event__doc, 408 .tp_members = pyrf_context_switch_event__members, 409 .tp_repr = (reprfunc)pyrf_context_switch_event__repr, 410 }; 411 412 static int pyrf_event__setup_types(void) 413 { 414 int err; 415 pyrf_mmap_event__type.tp_new = 416 pyrf_task_event__type.tp_new = 417 pyrf_comm_event__type.tp_new = 418 pyrf_lost_event__type.tp_new = 419 pyrf_read_event__type.tp_new = 420 pyrf_sample_event__type.tp_new = 421 pyrf_context_switch_event__type.tp_new = 422 pyrf_throttle_event__type.tp_new = PyType_GenericNew; 423 424 pyrf_sample_event__type.tp_dealloc = (destructor)pyrf_sample_event__delete, 425 426 err = PyType_Ready(&pyrf_mmap_event__type); 427 if (err < 0) 428 goto out; 429 err = PyType_Ready(&pyrf_lost_event__type); 430 if (err < 0) 431 goto out; 432 err = PyType_Ready(&pyrf_task_event__type); 433 if (err < 0) 434 goto out; 435 err = PyType_Ready(&pyrf_comm_event__type); 436 if (err < 0) 437 goto out; 438 err = PyType_Ready(&pyrf_throttle_event__type); 439 if (err < 0) 440 goto out; 441 err = PyType_Ready(&pyrf_read_event__type); 442 if (err < 0) 443 goto out; 444 err = PyType_Ready(&pyrf_sample_event__type); 445 if (err < 0) 446 goto out; 447 err = PyType_Ready(&pyrf_context_switch_event__type); 448 if (err < 0) 449 goto out; 450 out: 451 return err; 452 } 453 454 static PyTypeObject *pyrf_event__type[] = { 455 [PERF_RECORD_MMAP] = &pyrf_mmap_event__type, 456 [PERF_RECORD_LOST] = &pyrf_lost_event__type, 457 [PERF_RECORD_COMM] = &pyrf_comm_event__type, 458 [PERF_RECORD_EXIT] = &pyrf_task_event__type, 459 [PERF_RECORD_THROTTLE] = &pyrf_throttle_event__type, 460 [PERF_RECORD_UNTHROTTLE] = &pyrf_throttle_event__type, 461 [PERF_RECORD_FORK] = &pyrf_task_event__type, 462 [PERF_RECORD_READ] = &pyrf_read_event__type, 463 [PERF_RECORD_SAMPLE] = &pyrf_sample_event__type, 464 [PERF_RECORD_SWITCH] = &pyrf_context_switch_event__type, 465 [PERF_RECORD_SWITCH_CPU_WIDE] = &pyrf_context_switch_event__type, 466 }; 467 468 static PyObject *pyrf_event__new(const union perf_event *event) 469 { 470 struct pyrf_event *pevent; 471 PyTypeObject *ptype; 472 473 if ((event->header.type < PERF_RECORD_MMAP || 474 event->header.type > PERF_RECORD_SAMPLE) && 475 !(event->header.type == PERF_RECORD_SWITCH || 476 event->header.type == PERF_RECORD_SWITCH_CPU_WIDE)) 477 return NULL; 478 479 // FIXME this better be dynamic or we need to parse everything 480 // before calling perf_mmap__consume(), including tracepoint fields. 481 if (sizeof(pevent->event) < event->header.size) 482 return NULL; 483 484 ptype = pyrf_event__type[event->header.type]; 485 pevent = PyObject_New(struct pyrf_event, ptype); 486 if (pevent != NULL) 487 memcpy(&pevent->event, event, event->header.size); 488 return (PyObject *)pevent; 489 } 490 491 struct pyrf_cpu_map { 492 PyObject_HEAD 493 494 struct perf_cpu_map *cpus; 495 }; 496 497 static int pyrf_cpu_map__init(struct pyrf_cpu_map *pcpus, 498 PyObject *args, PyObject *kwargs) 499 { 500 static char *kwlist[] = { "cpustr", NULL }; 501 char *cpustr = NULL; 502 503 if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|s", 504 kwlist, &cpustr)) 505 return -1; 506 507 pcpus->cpus = perf_cpu_map__new(cpustr); 508 if (pcpus->cpus == NULL) 509 return -1; 510 return 0; 511 } 512 513 static void pyrf_cpu_map__delete(struct pyrf_cpu_map *pcpus) 514 { 515 perf_cpu_map__put(pcpus->cpus); 516 Py_TYPE(pcpus)->tp_free((PyObject*)pcpus); 517 } 518 519 static Py_ssize_t pyrf_cpu_map__length(PyObject *obj) 520 { 521 struct pyrf_cpu_map *pcpus = (void *)obj; 522 523 return perf_cpu_map__nr(pcpus->cpus); 524 } 525 526 static PyObject *pyrf_cpu_map__item(PyObject *obj, Py_ssize_t i) 527 { 528 struct pyrf_cpu_map *pcpus = (void *)obj; 529 530 if (i >= perf_cpu_map__nr(pcpus->cpus)) 531 return NULL; 532 533 return Py_BuildValue("i", perf_cpu_map__cpu(pcpus->cpus, i).cpu); 534 } 535 536 static PySequenceMethods pyrf_cpu_map__sequence_methods = { 537 .sq_length = pyrf_cpu_map__length, 538 .sq_item = pyrf_cpu_map__item, 539 }; 540 541 static const char pyrf_cpu_map__doc[] = PyDoc_STR("cpu map object."); 542 543 static PyTypeObject pyrf_cpu_map__type = { 544 PyVarObject_HEAD_INIT(NULL, 0) 545 .tp_name = "perf.cpu_map", 546 .tp_basicsize = sizeof(struct pyrf_cpu_map), 547 .tp_dealloc = (destructor)pyrf_cpu_map__delete, 548 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE, 549 .tp_doc = pyrf_cpu_map__doc, 550 .tp_as_sequence = &pyrf_cpu_map__sequence_methods, 551 .tp_init = (initproc)pyrf_cpu_map__init, 552 }; 553 554 static int pyrf_cpu_map__setup_types(void) 555 { 556 pyrf_cpu_map__type.tp_new = PyType_GenericNew; 557 return PyType_Ready(&pyrf_cpu_map__type); 558 } 559 560 struct pyrf_thread_map { 561 PyObject_HEAD 562 563 struct perf_thread_map *threads; 564 }; 565 566 static int pyrf_thread_map__init(struct pyrf_thread_map *pthreads, 567 PyObject *args, PyObject *kwargs) 568 { 569 static char *kwlist[] = { "pid", "tid", "uid", NULL }; 570 int pid = -1, tid = -1, uid = UINT_MAX; 571 572 if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|iii", 573 kwlist, &pid, &tid, &uid)) 574 return -1; 575 576 pthreads->threads = thread_map__new(pid, tid, uid); 577 if (pthreads->threads == NULL) 578 return -1; 579 return 0; 580 } 581 582 static void pyrf_thread_map__delete(struct pyrf_thread_map *pthreads) 583 { 584 perf_thread_map__put(pthreads->threads); 585 Py_TYPE(pthreads)->tp_free((PyObject*)pthreads); 586 } 587 588 static Py_ssize_t pyrf_thread_map__length(PyObject *obj) 589 { 590 struct pyrf_thread_map *pthreads = (void *)obj; 591 592 return perf_thread_map__nr(pthreads->threads); 593 } 594 595 static PyObject *pyrf_thread_map__item(PyObject *obj, Py_ssize_t i) 596 { 597 struct pyrf_thread_map *pthreads = (void *)obj; 598 599 if (i >= perf_thread_map__nr(pthreads->threads)) 600 return NULL; 601 602 return Py_BuildValue("i", perf_thread_map__pid(pthreads->threads, i)); 603 } 604 605 static PySequenceMethods pyrf_thread_map__sequence_methods = { 606 .sq_length = pyrf_thread_map__length, 607 .sq_item = pyrf_thread_map__item, 608 }; 609 610 static const char pyrf_thread_map__doc[] = PyDoc_STR("thread map object."); 611 612 static PyTypeObject pyrf_thread_map__type = { 613 PyVarObject_HEAD_INIT(NULL, 0) 614 .tp_name = "perf.thread_map", 615 .tp_basicsize = sizeof(struct pyrf_thread_map), 616 .tp_dealloc = (destructor)pyrf_thread_map__delete, 617 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE, 618 .tp_doc = pyrf_thread_map__doc, 619 .tp_as_sequence = &pyrf_thread_map__sequence_methods, 620 .tp_init = (initproc)pyrf_thread_map__init, 621 }; 622 623 static int pyrf_thread_map__setup_types(void) 624 { 625 pyrf_thread_map__type.tp_new = PyType_GenericNew; 626 return PyType_Ready(&pyrf_thread_map__type); 627 } 628 629 struct pyrf_evsel { 630 PyObject_HEAD 631 632 struct evsel evsel; 633 }; 634 635 static int pyrf_evsel__init(struct pyrf_evsel *pevsel, 636 PyObject *args, PyObject *kwargs) 637 { 638 struct perf_event_attr attr = { 639 .type = PERF_TYPE_HARDWARE, 640 .config = PERF_COUNT_HW_CPU_CYCLES, 641 .sample_type = PERF_SAMPLE_PERIOD | PERF_SAMPLE_TID, 642 }; 643 static char *kwlist[] = { 644 "type", 645 "config", 646 "sample_freq", 647 "sample_period", 648 "sample_type", 649 "read_format", 650 "disabled", 651 "inherit", 652 "pinned", 653 "exclusive", 654 "exclude_user", 655 "exclude_kernel", 656 "exclude_hv", 657 "exclude_idle", 658 "mmap", 659 "context_switch", 660 "comm", 661 "freq", 662 "inherit_stat", 663 "enable_on_exec", 664 "task", 665 "watermark", 666 "precise_ip", 667 "mmap_data", 668 "sample_id_all", 669 "wakeup_events", 670 "bp_type", 671 "bp_addr", 672 "bp_len", 673 NULL 674 }; 675 u64 sample_period = 0; 676 u32 disabled = 0, 677 inherit = 0, 678 pinned = 0, 679 exclusive = 0, 680 exclude_user = 0, 681 exclude_kernel = 0, 682 exclude_hv = 0, 683 exclude_idle = 0, 684 mmap = 0, 685 context_switch = 0, 686 comm = 0, 687 freq = 1, 688 inherit_stat = 0, 689 enable_on_exec = 0, 690 task = 0, 691 watermark = 0, 692 precise_ip = 0, 693 mmap_data = 0, 694 sample_id_all = 1; 695 int idx = 0; 696 697 if (!PyArg_ParseTupleAndKeywords(args, kwargs, 698 "|iKiKKiiiiiiiiiiiiiiiiiiiiiiKK", kwlist, 699 &attr.type, &attr.config, &attr.sample_freq, 700 &sample_period, &attr.sample_type, 701 &attr.read_format, &disabled, &inherit, 702 &pinned, &exclusive, &exclude_user, 703 &exclude_kernel, &exclude_hv, &exclude_idle, 704 &mmap, &context_switch, &comm, &freq, &inherit_stat, 705 &enable_on_exec, &task, &watermark, 706 &precise_ip, &mmap_data, &sample_id_all, 707 &attr.wakeup_events, &attr.bp_type, 708 &attr.bp_addr, &attr.bp_len, &idx)) 709 return -1; 710 711 /* union... */ 712 if (sample_period != 0) { 713 if (attr.sample_freq != 0) 714 return -1; /* FIXME: throw right exception */ 715 attr.sample_period = sample_period; 716 } 717 718 /* Bitfields */ 719 attr.disabled = disabled; 720 attr.inherit = inherit; 721 attr.pinned = pinned; 722 attr.exclusive = exclusive; 723 attr.exclude_user = exclude_user; 724 attr.exclude_kernel = exclude_kernel; 725 attr.exclude_hv = exclude_hv; 726 attr.exclude_idle = exclude_idle; 727 attr.mmap = mmap; 728 attr.context_switch = context_switch; 729 attr.comm = comm; 730 attr.freq = freq; 731 attr.inherit_stat = inherit_stat; 732 attr.enable_on_exec = enable_on_exec; 733 attr.task = task; 734 attr.watermark = watermark; 735 attr.precise_ip = precise_ip; 736 attr.mmap_data = mmap_data; 737 attr.sample_id_all = sample_id_all; 738 attr.size = sizeof(attr); 739 740 evsel__init(&pevsel->evsel, &attr, idx); 741 return 0; 742 } 743 744 static void pyrf_evsel__delete(struct pyrf_evsel *pevsel) 745 { 746 evsel__exit(&pevsel->evsel); 747 Py_TYPE(pevsel)->tp_free((PyObject*)pevsel); 748 } 749 750 static PyObject *pyrf_evsel__open(struct pyrf_evsel *pevsel, 751 PyObject *args, PyObject *kwargs) 752 { 753 struct evsel *evsel = &pevsel->evsel; 754 struct perf_cpu_map *cpus = NULL; 755 struct perf_thread_map *threads = NULL; 756 PyObject *pcpus = NULL, *pthreads = NULL; 757 int group = 0, inherit = 0; 758 static char *kwlist[] = { "cpus", "threads", "group", "inherit", NULL }; 759 760 if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|OOii", kwlist, 761 &pcpus, &pthreads, &group, &inherit)) 762 return NULL; 763 764 if (pthreads != NULL) 765 threads = ((struct pyrf_thread_map *)pthreads)->threads; 766 767 if (pcpus != NULL) 768 cpus = ((struct pyrf_cpu_map *)pcpus)->cpus; 769 770 evsel->core.attr.inherit = inherit; 771 /* 772 * This will group just the fds for this single evsel, to group 773 * multiple events, use evlist.open(). 774 */ 775 if (evsel__open(evsel, cpus, threads) < 0) { 776 PyErr_SetFromErrno(PyExc_OSError); 777 return NULL; 778 } 779 780 Py_INCREF(Py_None); 781 return Py_None; 782 } 783 784 static PyObject *pyrf_evsel__str(PyObject *self) 785 { 786 struct pyrf_evsel *pevsel = (void *)self; 787 struct evsel *evsel = &pevsel->evsel; 788 789 if (!evsel->pmu) 790 return PyUnicode_FromFormat("evsel(%s)", evsel__name(evsel)); 791 792 return PyUnicode_FromFormat("evsel(%s/%s/)", evsel->pmu->name, evsel__name(evsel)); 793 } 794 795 static PyMethodDef pyrf_evsel__methods[] = { 796 { 797 .ml_name = "open", 798 .ml_meth = (PyCFunction)pyrf_evsel__open, 799 .ml_flags = METH_VARARGS | METH_KEYWORDS, 800 .ml_doc = PyDoc_STR("open the event selector file descriptor table.") 801 }, 802 { .ml_name = NULL, } 803 }; 804 805 #define evsel_member_def(member, ptype, help) \ 806 { #member, ptype, \ 807 offsetof(struct pyrf_evsel, evsel.member), \ 808 0, help } 809 810 #define evsel_attr_member_def(member, ptype, help) \ 811 { #member, ptype, \ 812 offsetof(struct pyrf_evsel, evsel.core.attr.member), \ 813 0, help } 814 815 static PyMemberDef pyrf_evsel__members[] = { 816 evsel_member_def(tracking, T_BOOL, "tracking event."), 817 evsel_attr_member_def(type, T_UINT, "attribute type."), 818 evsel_attr_member_def(size, T_UINT, "attribute size."), 819 evsel_attr_member_def(config, T_ULONGLONG, "attribute config."), 820 evsel_attr_member_def(sample_period, T_ULONGLONG, "attribute sample_period."), 821 evsel_attr_member_def(sample_type, T_ULONGLONG, "attribute sample_type."), 822 evsel_attr_member_def(read_format, T_ULONGLONG, "attribute read_format."), 823 evsel_attr_member_def(wakeup_events, T_UINT, "attribute wakeup_events."), 824 { .name = NULL, }, 825 }; 826 827 static const char pyrf_evsel__doc[] = PyDoc_STR("perf event selector list object."); 828 829 static PyTypeObject pyrf_evsel__type = { 830 PyVarObject_HEAD_INIT(NULL, 0) 831 .tp_name = "perf.evsel", 832 .tp_basicsize = sizeof(struct pyrf_evsel), 833 .tp_dealloc = (destructor)pyrf_evsel__delete, 834 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE, 835 .tp_doc = pyrf_evsel__doc, 836 .tp_members = pyrf_evsel__members, 837 .tp_methods = pyrf_evsel__methods, 838 .tp_init = (initproc)pyrf_evsel__init, 839 .tp_str = pyrf_evsel__str, 840 .tp_repr = pyrf_evsel__str, 841 }; 842 843 static int pyrf_evsel__setup_types(void) 844 { 845 pyrf_evsel__type.tp_new = PyType_GenericNew; 846 return PyType_Ready(&pyrf_evsel__type); 847 } 848 849 struct pyrf_evlist { 850 PyObject_HEAD 851 852 struct evlist evlist; 853 }; 854 855 static int pyrf_evlist__init(struct pyrf_evlist *pevlist, 856 PyObject *args, PyObject *kwargs __maybe_unused) 857 { 858 PyObject *pcpus = NULL, *pthreads = NULL; 859 struct perf_cpu_map *cpus; 860 struct perf_thread_map *threads; 861 862 if (!PyArg_ParseTuple(args, "OO", &pcpus, &pthreads)) 863 return -1; 864 865 threads = ((struct pyrf_thread_map *)pthreads)->threads; 866 cpus = ((struct pyrf_cpu_map *)pcpus)->cpus; 867 evlist__init(&pevlist->evlist, cpus, threads); 868 return 0; 869 } 870 871 static void pyrf_evlist__delete(struct pyrf_evlist *pevlist) 872 { 873 evlist__exit(&pevlist->evlist); 874 Py_TYPE(pevlist)->tp_free((PyObject*)pevlist); 875 } 876 877 static PyObject *pyrf_evlist__all_cpus(struct pyrf_evlist *pevlist) 878 { 879 struct pyrf_cpu_map *pcpu_map = PyObject_New(struct pyrf_cpu_map, &pyrf_cpu_map__type); 880 881 if (pcpu_map) 882 pcpu_map->cpus = perf_cpu_map__get(pevlist->evlist.core.all_cpus); 883 884 return (PyObject *)pcpu_map; 885 } 886 887 static PyObject *pyrf_evlist__mmap(struct pyrf_evlist *pevlist, 888 PyObject *args, PyObject *kwargs) 889 { 890 struct evlist *evlist = &pevlist->evlist; 891 static char *kwlist[] = { "pages", "overwrite", NULL }; 892 int pages = 128, overwrite = false; 893 894 if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|ii", kwlist, 895 &pages, &overwrite)) 896 return NULL; 897 898 if (evlist__mmap(evlist, pages) < 0) { 899 PyErr_SetFromErrno(PyExc_OSError); 900 return NULL; 901 } 902 903 Py_INCREF(Py_None); 904 return Py_None; 905 } 906 907 static PyObject *pyrf_evlist__poll(struct pyrf_evlist *pevlist, 908 PyObject *args, PyObject *kwargs) 909 { 910 struct evlist *evlist = &pevlist->evlist; 911 static char *kwlist[] = { "timeout", NULL }; 912 int timeout = -1, n; 913 914 if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|i", kwlist, &timeout)) 915 return NULL; 916 917 n = evlist__poll(evlist, timeout); 918 if (n < 0) { 919 PyErr_SetFromErrno(PyExc_OSError); 920 return NULL; 921 } 922 923 return Py_BuildValue("i", n); 924 } 925 926 static PyObject *pyrf_evlist__get_pollfd(struct pyrf_evlist *pevlist, 927 PyObject *args __maybe_unused, 928 PyObject *kwargs __maybe_unused) 929 { 930 struct evlist *evlist = &pevlist->evlist; 931 PyObject *list = PyList_New(0); 932 int i; 933 934 for (i = 0; i < evlist->core.pollfd.nr; ++i) { 935 PyObject *file; 936 file = PyFile_FromFd(evlist->core.pollfd.entries[i].fd, "perf", "r", -1, 937 NULL, NULL, NULL, 0); 938 if (file == NULL) 939 goto free_list; 940 941 if (PyList_Append(list, file) != 0) { 942 Py_DECREF(file); 943 goto free_list; 944 } 945 946 Py_DECREF(file); 947 } 948 949 return list; 950 free_list: 951 return PyErr_NoMemory(); 952 } 953 954 955 static PyObject *pyrf_evlist__add(struct pyrf_evlist *pevlist, 956 PyObject *args, 957 PyObject *kwargs __maybe_unused) 958 { 959 struct evlist *evlist = &pevlist->evlist; 960 PyObject *pevsel; 961 struct evsel *evsel; 962 963 if (!PyArg_ParseTuple(args, "O", &pevsel)) 964 return NULL; 965 966 Py_INCREF(pevsel); 967 evsel = &((struct pyrf_evsel *)pevsel)->evsel; 968 evsel->core.idx = evlist->core.nr_entries; 969 evlist__add(evlist, evsel); 970 971 return Py_BuildValue("i", evlist->core.nr_entries); 972 } 973 974 static struct mmap *get_md(struct evlist *evlist, int cpu) 975 { 976 int i; 977 978 for (i = 0; i < evlist->core.nr_mmaps; i++) { 979 struct mmap *md = &evlist->mmap[i]; 980 981 if (md->core.cpu.cpu == cpu) 982 return md; 983 } 984 985 return NULL; 986 } 987 988 static PyObject *pyrf_evlist__read_on_cpu(struct pyrf_evlist *pevlist, 989 PyObject *args, PyObject *kwargs) 990 { 991 struct evlist *evlist = &pevlist->evlist; 992 union perf_event *event; 993 int sample_id_all = 1, cpu; 994 static char *kwlist[] = { "cpu", "sample_id_all", NULL }; 995 struct mmap *md; 996 int err; 997 998 if (!PyArg_ParseTupleAndKeywords(args, kwargs, "i|i", kwlist, 999 &cpu, &sample_id_all)) 1000 return NULL; 1001 1002 md = get_md(evlist, cpu); 1003 if (!md) 1004 return NULL; 1005 1006 if (perf_mmap__read_init(&md->core) < 0) 1007 goto end; 1008 1009 event = perf_mmap__read_event(&md->core); 1010 if (event != NULL) { 1011 PyObject *pyevent = pyrf_event__new(event); 1012 struct pyrf_event *pevent = (struct pyrf_event *)pyevent; 1013 struct evsel *evsel; 1014 1015 if (pyevent == NULL) 1016 return PyErr_NoMemory(); 1017 1018 evsel = evlist__event2evsel(evlist, event); 1019 if (!evsel) { 1020 Py_DECREF(pyevent); 1021 Py_INCREF(Py_None); 1022 return Py_None; 1023 } 1024 1025 pevent->evsel = evsel; 1026 1027 perf_mmap__consume(&md->core); 1028 1029 err = evsel__parse_sample(evsel, &pevent->event, &pevent->sample); 1030 if (err) { 1031 Py_DECREF(pyevent); 1032 return PyErr_Format(PyExc_OSError, 1033 "perf: can't parse sample, err=%d", err); 1034 } 1035 1036 return pyevent; 1037 } 1038 end: 1039 Py_INCREF(Py_None); 1040 return Py_None; 1041 } 1042 1043 static PyObject *pyrf_evlist__open(struct pyrf_evlist *pevlist, 1044 PyObject *args, PyObject *kwargs) 1045 { 1046 struct evlist *evlist = &pevlist->evlist; 1047 1048 if (evlist__open(evlist) < 0) { 1049 PyErr_SetFromErrno(PyExc_OSError); 1050 return NULL; 1051 } 1052 1053 Py_INCREF(Py_None); 1054 return Py_None; 1055 } 1056 1057 static PyObject *pyrf_evlist__config(struct pyrf_evlist *pevlist) 1058 { 1059 struct record_opts opts = { 1060 .sample_time = true, 1061 .mmap_pages = UINT_MAX, 1062 .user_freq = UINT_MAX, 1063 .user_interval = ULLONG_MAX, 1064 .freq = 4000, 1065 .target = { 1066 .uses_mmap = true, 1067 .default_per_cpu = true, 1068 }, 1069 .nr_threads_synthesize = 1, 1070 .ctl_fd = -1, 1071 .ctl_fd_ack = -1, 1072 .no_buffering = true, 1073 .no_inherit = true, 1074 }; 1075 struct evlist *evlist = &pevlist->evlist; 1076 1077 evlist__config(evlist, &opts, &callchain_param); 1078 Py_INCREF(Py_None); 1079 return Py_None; 1080 } 1081 1082 static PyObject *pyrf_evlist__disable(struct pyrf_evlist *pevlist) 1083 { 1084 evlist__disable(&pevlist->evlist); 1085 Py_INCREF(Py_None); 1086 return Py_None; 1087 } 1088 1089 static PyObject *pyrf_evlist__enable(struct pyrf_evlist *pevlist) 1090 { 1091 evlist__enable(&pevlist->evlist); 1092 Py_INCREF(Py_None); 1093 return Py_None; 1094 } 1095 1096 static PyMethodDef pyrf_evlist__methods[] = { 1097 { 1098 .ml_name = "all_cpus", 1099 .ml_meth = (PyCFunction)pyrf_evlist__all_cpus, 1100 .ml_flags = METH_NOARGS, 1101 .ml_doc = PyDoc_STR("CPU map union of all evsel CPU maps.") 1102 }, 1103 { 1104 .ml_name = "mmap", 1105 .ml_meth = (PyCFunction)pyrf_evlist__mmap, 1106 .ml_flags = METH_VARARGS | METH_KEYWORDS, 1107 .ml_doc = PyDoc_STR("mmap the file descriptor table.") 1108 }, 1109 { 1110 .ml_name = "open", 1111 .ml_meth = (PyCFunction)pyrf_evlist__open, 1112 .ml_flags = METH_VARARGS | METH_KEYWORDS, 1113 .ml_doc = PyDoc_STR("open the file descriptors.") 1114 }, 1115 { 1116 .ml_name = "poll", 1117 .ml_meth = (PyCFunction)pyrf_evlist__poll, 1118 .ml_flags = METH_VARARGS | METH_KEYWORDS, 1119 .ml_doc = PyDoc_STR("poll the file descriptor table.") 1120 }, 1121 { 1122 .ml_name = "get_pollfd", 1123 .ml_meth = (PyCFunction)pyrf_evlist__get_pollfd, 1124 .ml_flags = METH_VARARGS | METH_KEYWORDS, 1125 .ml_doc = PyDoc_STR("get the poll file descriptor table.") 1126 }, 1127 { 1128 .ml_name = "add", 1129 .ml_meth = (PyCFunction)pyrf_evlist__add, 1130 .ml_flags = METH_VARARGS | METH_KEYWORDS, 1131 .ml_doc = PyDoc_STR("adds an event selector to the list.") 1132 }, 1133 { 1134 .ml_name = "read_on_cpu", 1135 .ml_meth = (PyCFunction)pyrf_evlist__read_on_cpu, 1136 .ml_flags = METH_VARARGS | METH_KEYWORDS, 1137 .ml_doc = PyDoc_STR("reads an event.") 1138 }, 1139 { 1140 .ml_name = "config", 1141 .ml_meth = (PyCFunction)pyrf_evlist__config, 1142 .ml_flags = METH_NOARGS, 1143 .ml_doc = PyDoc_STR("Apply default record options to the evlist.") 1144 }, 1145 { 1146 .ml_name = "disable", 1147 .ml_meth = (PyCFunction)pyrf_evlist__disable, 1148 .ml_flags = METH_NOARGS, 1149 .ml_doc = PyDoc_STR("Disable the evsels in the evlist.") 1150 }, 1151 { 1152 .ml_name = "enable", 1153 .ml_meth = (PyCFunction)pyrf_evlist__enable, 1154 .ml_flags = METH_NOARGS, 1155 .ml_doc = PyDoc_STR("Enable the evsels in the evlist.") 1156 }, 1157 { .ml_name = NULL, } 1158 }; 1159 1160 static Py_ssize_t pyrf_evlist__length(PyObject *obj) 1161 { 1162 struct pyrf_evlist *pevlist = (void *)obj; 1163 1164 return pevlist->evlist.core.nr_entries; 1165 } 1166 1167 static PyObject *pyrf_evlist__item(PyObject *obj, Py_ssize_t i) 1168 { 1169 struct pyrf_evlist *pevlist = (void *)obj; 1170 struct evsel *pos; 1171 1172 if (i >= pevlist->evlist.core.nr_entries) { 1173 PyErr_SetString(PyExc_IndexError, "Index out of range"); 1174 return NULL; 1175 } 1176 1177 evlist__for_each_entry(&pevlist->evlist, pos) { 1178 if (i-- == 0) 1179 break; 1180 } 1181 1182 return Py_BuildValue("O", container_of(pos, struct pyrf_evsel, evsel)); 1183 } 1184 1185 static PyObject *pyrf_evlist__str(PyObject *self) 1186 { 1187 struct pyrf_evlist *pevlist = (void *)self; 1188 struct evsel *pos; 1189 struct strbuf sb = STRBUF_INIT; 1190 bool first = true; 1191 PyObject *result; 1192 1193 strbuf_addstr(&sb, "evlist(["); 1194 evlist__for_each_entry(&pevlist->evlist, pos) { 1195 if (!first) 1196 strbuf_addch(&sb, ','); 1197 if (!pos->pmu) 1198 strbuf_addstr(&sb, evsel__name(pos)); 1199 else 1200 strbuf_addf(&sb, "%s/%s/", pos->pmu->name, evsel__name(pos)); 1201 first = false; 1202 } 1203 strbuf_addstr(&sb, "])"); 1204 result = PyUnicode_FromString(sb.buf); 1205 strbuf_release(&sb); 1206 return result; 1207 } 1208 1209 static PySequenceMethods pyrf_evlist__sequence_methods = { 1210 .sq_length = pyrf_evlist__length, 1211 .sq_item = pyrf_evlist__item, 1212 }; 1213 1214 static const char pyrf_evlist__doc[] = PyDoc_STR("perf event selector list object."); 1215 1216 static PyTypeObject pyrf_evlist__type = { 1217 PyVarObject_HEAD_INIT(NULL, 0) 1218 .tp_name = "perf.evlist", 1219 .tp_basicsize = sizeof(struct pyrf_evlist), 1220 .tp_dealloc = (destructor)pyrf_evlist__delete, 1221 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE, 1222 .tp_as_sequence = &pyrf_evlist__sequence_methods, 1223 .tp_doc = pyrf_evlist__doc, 1224 .tp_methods = pyrf_evlist__methods, 1225 .tp_init = (initproc)pyrf_evlist__init, 1226 .tp_repr = pyrf_evlist__str, 1227 .tp_str = pyrf_evlist__str, 1228 }; 1229 1230 static int pyrf_evlist__setup_types(void) 1231 { 1232 pyrf_evlist__type.tp_new = PyType_GenericNew; 1233 return PyType_Ready(&pyrf_evlist__type); 1234 } 1235 1236 #define PERF_CONST(name) { #name, PERF_##name } 1237 1238 struct perf_constant { 1239 const char *name; 1240 int value; 1241 }; 1242 1243 static const struct perf_constant perf__constants[] = { 1244 PERF_CONST(TYPE_HARDWARE), 1245 PERF_CONST(TYPE_SOFTWARE), 1246 PERF_CONST(TYPE_TRACEPOINT), 1247 PERF_CONST(TYPE_HW_CACHE), 1248 PERF_CONST(TYPE_RAW), 1249 PERF_CONST(TYPE_BREAKPOINT), 1250 1251 PERF_CONST(COUNT_HW_CPU_CYCLES), 1252 PERF_CONST(COUNT_HW_INSTRUCTIONS), 1253 PERF_CONST(COUNT_HW_CACHE_REFERENCES), 1254 PERF_CONST(COUNT_HW_CACHE_MISSES), 1255 PERF_CONST(COUNT_HW_BRANCH_INSTRUCTIONS), 1256 PERF_CONST(COUNT_HW_BRANCH_MISSES), 1257 PERF_CONST(COUNT_HW_BUS_CYCLES), 1258 PERF_CONST(COUNT_HW_CACHE_L1D), 1259 PERF_CONST(COUNT_HW_CACHE_L1I), 1260 PERF_CONST(COUNT_HW_CACHE_LL), 1261 PERF_CONST(COUNT_HW_CACHE_DTLB), 1262 PERF_CONST(COUNT_HW_CACHE_ITLB), 1263 PERF_CONST(COUNT_HW_CACHE_BPU), 1264 PERF_CONST(COUNT_HW_CACHE_OP_READ), 1265 PERF_CONST(COUNT_HW_CACHE_OP_WRITE), 1266 PERF_CONST(COUNT_HW_CACHE_OP_PREFETCH), 1267 PERF_CONST(COUNT_HW_CACHE_RESULT_ACCESS), 1268 PERF_CONST(COUNT_HW_CACHE_RESULT_MISS), 1269 1270 PERF_CONST(COUNT_HW_STALLED_CYCLES_FRONTEND), 1271 PERF_CONST(COUNT_HW_STALLED_CYCLES_BACKEND), 1272 1273 PERF_CONST(COUNT_SW_CPU_CLOCK), 1274 PERF_CONST(COUNT_SW_TASK_CLOCK), 1275 PERF_CONST(COUNT_SW_PAGE_FAULTS), 1276 PERF_CONST(COUNT_SW_CONTEXT_SWITCHES), 1277 PERF_CONST(COUNT_SW_CPU_MIGRATIONS), 1278 PERF_CONST(COUNT_SW_PAGE_FAULTS_MIN), 1279 PERF_CONST(COUNT_SW_PAGE_FAULTS_MAJ), 1280 PERF_CONST(COUNT_SW_ALIGNMENT_FAULTS), 1281 PERF_CONST(COUNT_SW_EMULATION_FAULTS), 1282 PERF_CONST(COUNT_SW_DUMMY), 1283 1284 PERF_CONST(SAMPLE_IP), 1285 PERF_CONST(SAMPLE_TID), 1286 PERF_CONST(SAMPLE_TIME), 1287 PERF_CONST(SAMPLE_ADDR), 1288 PERF_CONST(SAMPLE_READ), 1289 PERF_CONST(SAMPLE_CALLCHAIN), 1290 PERF_CONST(SAMPLE_ID), 1291 PERF_CONST(SAMPLE_CPU), 1292 PERF_CONST(SAMPLE_PERIOD), 1293 PERF_CONST(SAMPLE_STREAM_ID), 1294 PERF_CONST(SAMPLE_RAW), 1295 1296 PERF_CONST(FORMAT_TOTAL_TIME_ENABLED), 1297 PERF_CONST(FORMAT_TOTAL_TIME_RUNNING), 1298 PERF_CONST(FORMAT_ID), 1299 PERF_CONST(FORMAT_GROUP), 1300 1301 PERF_CONST(RECORD_MMAP), 1302 PERF_CONST(RECORD_LOST), 1303 PERF_CONST(RECORD_COMM), 1304 PERF_CONST(RECORD_EXIT), 1305 PERF_CONST(RECORD_THROTTLE), 1306 PERF_CONST(RECORD_UNTHROTTLE), 1307 PERF_CONST(RECORD_FORK), 1308 PERF_CONST(RECORD_READ), 1309 PERF_CONST(RECORD_SAMPLE), 1310 PERF_CONST(RECORD_MMAP2), 1311 PERF_CONST(RECORD_AUX), 1312 PERF_CONST(RECORD_ITRACE_START), 1313 PERF_CONST(RECORD_LOST_SAMPLES), 1314 PERF_CONST(RECORD_SWITCH), 1315 PERF_CONST(RECORD_SWITCH_CPU_WIDE), 1316 1317 PERF_CONST(RECORD_MISC_SWITCH_OUT), 1318 { .name = NULL, }, 1319 }; 1320 1321 static PyObject *pyrf__tracepoint(struct pyrf_evsel *pevsel, 1322 PyObject *args, PyObject *kwargs) 1323 { 1324 #ifndef HAVE_LIBTRACEEVENT 1325 return NULL; 1326 #else 1327 struct tep_event *tp_format; 1328 static char *kwlist[] = { "sys", "name", NULL }; 1329 char *sys = NULL; 1330 char *name = NULL; 1331 1332 if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|ss", kwlist, 1333 &sys, &name)) 1334 return NULL; 1335 1336 tp_format = trace_event__tp_format(sys, name); 1337 if (IS_ERR(tp_format)) 1338 return PyLong_FromLong(-1); 1339 1340 return PyLong_FromLong(tp_format->id); 1341 #endif // HAVE_LIBTRACEEVENT 1342 } 1343 1344 static PyObject *pyrf_evsel__from_evsel(struct evsel *evsel) 1345 { 1346 struct pyrf_evsel *pevsel = PyObject_New(struct pyrf_evsel, &pyrf_evsel__type); 1347 1348 if (!pevsel) 1349 return NULL; 1350 1351 memset(&pevsel->evsel, 0, sizeof(pevsel->evsel)); 1352 evsel__init(&pevsel->evsel, &evsel->core.attr, evsel->core.idx); 1353 1354 evsel__clone(&pevsel->evsel, evsel); 1355 if (evsel__is_group_leader(evsel)) 1356 evsel__set_leader(&pevsel->evsel, &pevsel->evsel); 1357 return (PyObject *)pevsel; 1358 } 1359 1360 static PyObject *pyrf_evlist__from_evlist(struct evlist *evlist) 1361 { 1362 struct pyrf_evlist *pevlist = PyObject_New(struct pyrf_evlist, &pyrf_evlist__type); 1363 struct evsel *pos; 1364 1365 if (!pevlist) 1366 return NULL; 1367 1368 memset(&pevlist->evlist, 0, sizeof(pevlist->evlist)); 1369 evlist__init(&pevlist->evlist, evlist->core.all_cpus, evlist->core.threads); 1370 evlist__for_each_entry(evlist, pos) { 1371 struct pyrf_evsel *pevsel = (void *)pyrf_evsel__from_evsel(pos); 1372 1373 evlist__add(&pevlist->evlist, &pevsel->evsel); 1374 } 1375 return (PyObject *)pevlist; 1376 } 1377 1378 static PyObject *pyrf__parse_events(PyObject *self, PyObject *args) 1379 { 1380 const char *input; 1381 struct evlist evlist = {}; 1382 struct parse_events_error err; 1383 PyObject *result; 1384 PyObject *pcpus = NULL, *pthreads = NULL; 1385 struct perf_cpu_map *cpus; 1386 struct perf_thread_map *threads; 1387 1388 if (!PyArg_ParseTuple(args, "s|OO", &input, &pcpus, &pthreads)) 1389 return NULL; 1390 1391 threads = pthreads ? ((struct pyrf_thread_map *)pthreads)->threads : NULL; 1392 cpus = pcpus ? ((struct pyrf_cpu_map *)pcpus)->cpus : NULL; 1393 1394 parse_events_error__init(&err); 1395 evlist__init(&evlist, cpus, threads); 1396 if (parse_events(&evlist, input, &err)) { 1397 parse_events_error__print(&err, input); 1398 PyErr_SetFromErrno(PyExc_OSError); 1399 return NULL; 1400 } 1401 result = pyrf_evlist__from_evlist(&evlist); 1402 evlist__exit(&evlist); 1403 return result; 1404 } 1405 1406 static PyMethodDef perf__methods[] = { 1407 { 1408 .ml_name = "tracepoint", 1409 .ml_meth = (PyCFunction) pyrf__tracepoint, 1410 .ml_flags = METH_VARARGS | METH_KEYWORDS, 1411 .ml_doc = PyDoc_STR("Get tracepoint config.") 1412 }, 1413 { 1414 .ml_name = "parse_events", 1415 .ml_meth = (PyCFunction) pyrf__parse_events, 1416 .ml_flags = METH_VARARGS, 1417 .ml_doc = PyDoc_STR("Parse a string of events and return an evlist.") 1418 }, 1419 { .ml_name = NULL, } 1420 }; 1421 1422 PyMODINIT_FUNC PyInit_perf(void) 1423 { 1424 PyObject *obj; 1425 int i; 1426 PyObject *dict; 1427 static struct PyModuleDef moduledef = { 1428 PyModuleDef_HEAD_INIT, 1429 "perf", /* m_name */ 1430 "", /* m_doc */ 1431 -1, /* m_size */ 1432 perf__methods, /* m_methods */ 1433 NULL, /* m_reload */ 1434 NULL, /* m_traverse */ 1435 NULL, /* m_clear */ 1436 NULL, /* m_free */ 1437 }; 1438 PyObject *module = PyModule_Create(&moduledef); 1439 1440 if (module == NULL || 1441 pyrf_event__setup_types() < 0 || 1442 pyrf_evlist__setup_types() < 0 || 1443 pyrf_evsel__setup_types() < 0 || 1444 pyrf_thread_map__setup_types() < 0 || 1445 pyrf_cpu_map__setup_types() < 0) 1446 return module; 1447 1448 /* The page_size is placed in util object. */ 1449 page_size = sysconf(_SC_PAGE_SIZE); 1450 1451 Py_INCREF(&pyrf_evlist__type); 1452 PyModule_AddObject(module, "evlist", (PyObject*)&pyrf_evlist__type); 1453 1454 Py_INCREF(&pyrf_evsel__type); 1455 PyModule_AddObject(module, "evsel", (PyObject*)&pyrf_evsel__type); 1456 1457 Py_INCREF(&pyrf_mmap_event__type); 1458 PyModule_AddObject(module, "mmap_event", (PyObject *)&pyrf_mmap_event__type); 1459 1460 Py_INCREF(&pyrf_lost_event__type); 1461 PyModule_AddObject(module, "lost_event", (PyObject *)&pyrf_lost_event__type); 1462 1463 Py_INCREF(&pyrf_comm_event__type); 1464 PyModule_AddObject(module, "comm_event", (PyObject *)&pyrf_comm_event__type); 1465 1466 Py_INCREF(&pyrf_task_event__type); 1467 PyModule_AddObject(module, "task_event", (PyObject *)&pyrf_task_event__type); 1468 1469 Py_INCREF(&pyrf_throttle_event__type); 1470 PyModule_AddObject(module, "throttle_event", (PyObject *)&pyrf_throttle_event__type); 1471 1472 Py_INCREF(&pyrf_task_event__type); 1473 PyModule_AddObject(module, "task_event", (PyObject *)&pyrf_task_event__type); 1474 1475 Py_INCREF(&pyrf_read_event__type); 1476 PyModule_AddObject(module, "read_event", (PyObject *)&pyrf_read_event__type); 1477 1478 Py_INCREF(&pyrf_sample_event__type); 1479 PyModule_AddObject(module, "sample_event", (PyObject *)&pyrf_sample_event__type); 1480 1481 Py_INCREF(&pyrf_context_switch_event__type); 1482 PyModule_AddObject(module, "switch_event", (PyObject *)&pyrf_context_switch_event__type); 1483 1484 Py_INCREF(&pyrf_thread_map__type); 1485 PyModule_AddObject(module, "thread_map", (PyObject*)&pyrf_thread_map__type); 1486 1487 Py_INCREF(&pyrf_cpu_map__type); 1488 PyModule_AddObject(module, "cpu_map", (PyObject*)&pyrf_cpu_map__type); 1489 1490 dict = PyModule_GetDict(module); 1491 if (dict == NULL) 1492 goto error; 1493 1494 for (i = 0; perf__constants[i].name != NULL; i++) { 1495 obj = PyLong_FromLong(perf__constants[i].value); 1496 if (obj == NULL) 1497 goto error; 1498 PyDict_SetItemString(dict, perf__constants[i].name, obj); 1499 Py_DECREF(obj); 1500 } 1501 1502 error: 1503 if (PyErr_Occurred()) 1504 PyErr_SetString(PyExc_ImportError, "perf: Init failed!"); 1505 return module; 1506 } 1507