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 "evlist.h" 13 #include "evsel.h" 14 #include "event.h" 15 #include "print_binary.h" 16 #include "strbuf.h" 17 #include "thread_map.h" 18 #include "trace-event.h" 19 #include "mmap.h" 20 #include "util/sample.h" 21 #include <internal/lib.h> 22 23 #define _PyUnicode_FromString(arg) \ 24 PyUnicode_FromString(arg) 25 #define _PyUnicode_FromFormat(...) \ 26 PyUnicode_FromFormat(__VA_ARGS__) 27 #define _PyLong_FromLong(arg) \ 28 PyLong_FromLong(arg) 29 30 PyMODINIT_FUNC PyInit_perf(void); 31 32 #define member_def(type, member, ptype, help) \ 33 { #member, ptype, \ 34 offsetof(struct pyrf_event, event) + offsetof(struct type, member), \ 35 0, help } 36 37 #define sample_member_def(name, member, ptype, help) \ 38 { #name, ptype, \ 39 offsetof(struct pyrf_event, sample) + offsetof(struct perf_sample, member), \ 40 0, help } 41 42 struct pyrf_event { 43 PyObject_HEAD 44 struct evsel *evsel; 45 struct perf_sample sample; 46 union perf_event event; 47 }; 48 49 #define sample_members \ 50 sample_member_def(sample_ip, ip, T_ULONGLONG, "event type"), \ 51 sample_member_def(sample_pid, pid, T_INT, "event pid"), \ 52 sample_member_def(sample_tid, tid, T_INT, "event tid"), \ 53 sample_member_def(sample_time, time, T_ULONGLONG, "event timestamp"), \ 54 sample_member_def(sample_addr, addr, T_ULONGLONG, "event addr"), \ 55 sample_member_def(sample_id, id, T_ULONGLONG, "event id"), \ 56 sample_member_def(sample_stream_id, stream_id, T_ULONGLONG, "event stream id"), \ 57 sample_member_def(sample_period, period, T_ULONGLONG, "event period"), \ 58 sample_member_def(sample_cpu, cpu, T_UINT, "event cpu"), 59 60 static const char pyrf_mmap_event__doc[] = PyDoc_STR("perf mmap event object."); 61 62 static PyMemberDef pyrf_mmap_event__members[] = { 63 sample_members 64 member_def(perf_event_header, type, T_UINT, "event type"), 65 member_def(perf_event_header, misc, T_UINT, "event misc"), 66 member_def(perf_record_mmap, pid, T_UINT, "event pid"), 67 member_def(perf_record_mmap, tid, T_UINT, "event tid"), 68 member_def(perf_record_mmap, start, T_ULONGLONG, "start of the map"), 69 member_def(perf_record_mmap, len, T_ULONGLONG, "map length"), 70 member_def(perf_record_mmap, pgoff, T_ULONGLONG, "page offset"), 71 member_def(perf_record_mmap, filename, T_STRING_INPLACE, "backing store"), 72 { .name = NULL, }, 73 }; 74 75 static PyObject *pyrf_mmap_event__repr(const struct pyrf_event *pevent) 76 { 77 PyObject *ret; 78 char *s; 79 80 if (asprintf(&s, "{ type: mmap, pid: %u, tid: %u, start: %#" PRI_lx64 ", " 81 "length: %#" PRI_lx64 ", offset: %#" PRI_lx64 ", " 82 "filename: %s }", 83 pevent->event.mmap.pid, pevent->event.mmap.tid, 84 pevent->event.mmap.start, pevent->event.mmap.len, 85 pevent->event.mmap.pgoff, pevent->event.mmap.filename) < 0) { 86 ret = PyErr_NoMemory(); 87 } else { 88 ret = PyUnicode_FromString(s); 89 free(s); 90 } 91 return ret; 92 } 93 94 static PyTypeObject pyrf_mmap_event__type = { 95 PyVarObject_HEAD_INIT(NULL, 0) 96 .tp_name = "perf.mmap_event", 97 .tp_basicsize = sizeof(struct pyrf_event), 98 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE, 99 .tp_doc = pyrf_mmap_event__doc, 100 .tp_members = pyrf_mmap_event__members, 101 .tp_repr = (reprfunc)pyrf_mmap_event__repr, 102 }; 103 104 static const char pyrf_task_event__doc[] = PyDoc_STR("perf task (fork/exit) event object."); 105 106 static PyMemberDef pyrf_task_event__members[] = { 107 sample_members 108 member_def(perf_event_header, type, T_UINT, "event type"), 109 member_def(perf_record_fork, pid, T_UINT, "event pid"), 110 member_def(perf_record_fork, ppid, T_UINT, "event ppid"), 111 member_def(perf_record_fork, tid, T_UINT, "event tid"), 112 member_def(perf_record_fork, ptid, T_UINT, "event ptid"), 113 member_def(perf_record_fork, time, T_ULONGLONG, "timestamp"), 114 { .name = NULL, }, 115 }; 116 117 static PyObject *pyrf_task_event__repr(const struct pyrf_event *pevent) 118 { 119 return PyUnicode_FromFormat("{ type: %s, pid: %u, ppid: %u, tid: %u, " 120 "ptid: %u, time: %" PRI_lu64 "}", 121 pevent->event.header.type == PERF_RECORD_FORK ? "fork" : "exit", 122 pevent->event.fork.pid, 123 pevent->event.fork.ppid, 124 pevent->event.fork.tid, 125 pevent->event.fork.ptid, 126 pevent->event.fork.time); 127 } 128 129 static PyTypeObject pyrf_task_event__type = { 130 PyVarObject_HEAD_INIT(NULL, 0) 131 .tp_name = "perf.task_event", 132 .tp_basicsize = sizeof(struct pyrf_event), 133 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE, 134 .tp_doc = pyrf_task_event__doc, 135 .tp_members = pyrf_task_event__members, 136 .tp_repr = (reprfunc)pyrf_task_event__repr, 137 }; 138 139 static const char pyrf_comm_event__doc[] = PyDoc_STR("perf comm event object."); 140 141 static PyMemberDef pyrf_comm_event__members[] = { 142 sample_members 143 member_def(perf_event_header, type, T_UINT, "event type"), 144 member_def(perf_record_comm, pid, T_UINT, "event pid"), 145 member_def(perf_record_comm, tid, T_UINT, "event tid"), 146 member_def(perf_record_comm, comm, T_STRING_INPLACE, "process name"), 147 { .name = NULL, }, 148 }; 149 150 static PyObject *pyrf_comm_event__repr(const struct pyrf_event *pevent) 151 { 152 return PyUnicode_FromFormat("{ type: comm, pid: %u, tid: %u, comm: %s }", 153 pevent->event.comm.pid, 154 pevent->event.comm.tid, 155 pevent->event.comm.comm); 156 } 157 158 static PyTypeObject pyrf_comm_event__type = { 159 PyVarObject_HEAD_INIT(NULL, 0) 160 .tp_name = "perf.comm_event", 161 .tp_basicsize = sizeof(struct pyrf_event), 162 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE, 163 .tp_doc = pyrf_comm_event__doc, 164 .tp_members = pyrf_comm_event__members, 165 .tp_repr = (reprfunc)pyrf_comm_event__repr, 166 }; 167 168 static const char pyrf_throttle_event__doc[] = PyDoc_STR("perf throttle event object."); 169 170 static PyMemberDef pyrf_throttle_event__members[] = { 171 sample_members 172 member_def(perf_event_header, type, T_UINT, "event type"), 173 member_def(perf_record_throttle, time, T_ULONGLONG, "timestamp"), 174 member_def(perf_record_throttle, id, T_ULONGLONG, "event id"), 175 member_def(perf_record_throttle, stream_id, T_ULONGLONG, "event stream id"), 176 { .name = NULL, }, 177 }; 178 179 static PyObject *pyrf_throttle_event__repr(const struct pyrf_event *pevent) 180 { 181 const struct perf_record_throttle *te = (const struct perf_record_throttle *) 182 (&pevent->event.header + 1); 183 184 return PyUnicode_FromFormat("{ type: %sthrottle, time: %" PRI_lu64 ", id: %" PRI_lu64 185 ", stream_id: %" PRI_lu64 " }", 186 pevent->event.header.type == PERF_RECORD_THROTTLE ? "" : "un", 187 te->time, te->id, te->stream_id); 188 } 189 190 static PyTypeObject pyrf_throttle_event__type = { 191 PyVarObject_HEAD_INIT(NULL, 0) 192 .tp_name = "perf.throttle_event", 193 .tp_basicsize = sizeof(struct pyrf_event), 194 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE, 195 .tp_doc = pyrf_throttle_event__doc, 196 .tp_members = pyrf_throttle_event__members, 197 .tp_repr = (reprfunc)pyrf_throttle_event__repr, 198 }; 199 200 static const char pyrf_lost_event__doc[] = PyDoc_STR("perf lost event object."); 201 202 static PyMemberDef pyrf_lost_event__members[] = { 203 sample_members 204 member_def(perf_record_lost, id, T_ULONGLONG, "event id"), 205 member_def(perf_record_lost, lost, T_ULONGLONG, "number of lost events"), 206 { .name = NULL, }, 207 }; 208 209 static PyObject *pyrf_lost_event__repr(const struct pyrf_event *pevent) 210 { 211 PyObject *ret; 212 char *s; 213 214 if (asprintf(&s, "{ type: lost, id: %#" PRI_lx64 ", " 215 "lost: %#" PRI_lx64 " }", 216 pevent->event.lost.id, pevent->event.lost.lost) < 0) { 217 ret = PyErr_NoMemory(); 218 } else { 219 ret = PyUnicode_FromString(s); 220 free(s); 221 } 222 return ret; 223 } 224 225 static PyTypeObject pyrf_lost_event__type = { 226 PyVarObject_HEAD_INIT(NULL, 0) 227 .tp_name = "perf.lost_event", 228 .tp_basicsize = sizeof(struct pyrf_event), 229 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE, 230 .tp_doc = pyrf_lost_event__doc, 231 .tp_members = pyrf_lost_event__members, 232 .tp_repr = (reprfunc)pyrf_lost_event__repr, 233 }; 234 235 static const char pyrf_read_event__doc[] = PyDoc_STR("perf read event object."); 236 237 static PyMemberDef pyrf_read_event__members[] = { 238 sample_members 239 member_def(perf_record_read, pid, T_UINT, "event pid"), 240 member_def(perf_record_read, tid, T_UINT, "event tid"), 241 { .name = NULL, }, 242 }; 243 244 static PyObject *pyrf_read_event__repr(const struct pyrf_event *pevent) 245 { 246 return PyUnicode_FromFormat("{ type: read, pid: %u, tid: %u }", 247 pevent->event.read.pid, 248 pevent->event.read.tid); 249 /* 250 * FIXME: return the array of read values, 251 * making this method useful ;-) 252 */ 253 } 254 255 static PyTypeObject pyrf_read_event__type = { 256 PyVarObject_HEAD_INIT(NULL, 0) 257 .tp_name = "perf.read_event", 258 .tp_basicsize = sizeof(struct pyrf_event), 259 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE, 260 .tp_doc = pyrf_read_event__doc, 261 .tp_members = pyrf_read_event__members, 262 .tp_repr = (reprfunc)pyrf_read_event__repr, 263 }; 264 265 static const char pyrf_sample_event__doc[] = PyDoc_STR("perf sample event object."); 266 267 static PyMemberDef pyrf_sample_event__members[] = { 268 sample_members 269 member_def(perf_event_header, type, T_UINT, "event type"), 270 { .name = NULL, }, 271 }; 272 273 static PyObject *pyrf_sample_event__repr(const struct pyrf_event *pevent) 274 { 275 PyObject *ret; 276 char *s; 277 278 if (asprintf(&s, "{ type: sample }") < 0) { 279 ret = PyErr_NoMemory(); 280 } else { 281 ret = PyUnicode_FromString(s); 282 free(s); 283 } 284 return ret; 285 } 286 287 #ifdef HAVE_LIBTRACEEVENT 288 static bool is_tracepoint(const struct pyrf_event *pevent) 289 { 290 return pevent->evsel->core.attr.type == PERF_TYPE_TRACEPOINT; 291 } 292 293 static PyObject* 294 tracepoint_field(const struct pyrf_event *pe, struct tep_format_field *field) 295 { 296 struct tep_handle *pevent = field->event->tep; 297 void *data = pe->sample.raw_data; 298 PyObject *ret = NULL; 299 unsigned long long val; 300 unsigned int offset, len; 301 302 if (field->flags & TEP_FIELD_IS_ARRAY) { 303 offset = field->offset; 304 len = field->size; 305 if (field->flags & TEP_FIELD_IS_DYNAMIC) { 306 val = tep_read_number(pevent, data + offset, len); 307 offset = val; 308 len = offset >> 16; 309 offset &= 0xffff; 310 if (tep_field_is_relative(field->flags)) 311 offset += field->offset + field->size; 312 } 313 if (field->flags & TEP_FIELD_IS_STRING && 314 is_printable_array(data + offset, len)) { 315 ret = PyUnicode_FromString((char *)data + offset); 316 } else { 317 ret = PyByteArray_FromStringAndSize((const char *) data + offset, len); 318 field->flags &= ~TEP_FIELD_IS_STRING; 319 } 320 } else { 321 val = tep_read_number(pevent, data + field->offset, 322 field->size); 323 if (field->flags & TEP_FIELD_IS_POINTER) 324 ret = PyLong_FromUnsignedLong((unsigned long) val); 325 else if (field->flags & TEP_FIELD_IS_SIGNED) 326 ret = PyLong_FromLong((long) val); 327 else 328 ret = PyLong_FromUnsignedLong((unsigned long) val); 329 } 330 331 return ret; 332 } 333 334 static PyObject* 335 get_tracepoint_field(struct pyrf_event *pevent, PyObject *attr_name) 336 { 337 const char *str = _PyUnicode_AsString(PyObject_Str(attr_name)); 338 struct evsel *evsel = pevent->evsel; 339 struct tep_format_field *field; 340 341 if (!evsel->tp_format) { 342 struct tep_event *tp_format; 343 344 tp_format = trace_event__tp_format_id(evsel->core.attr.config); 345 if (IS_ERR_OR_NULL(tp_format)) 346 return NULL; 347 348 evsel->tp_format = tp_format; 349 } 350 351 field = tep_find_any_field(evsel->tp_format, str); 352 if (!field) 353 return NULL; 354 355 return tracepoint_field(pevent, field); 356 } 357 #endif /* HAVE_LIBTRACEEVENT */ 358 359 static PyObject* 360 pyrf_sample_event__getattro(struct pyrf_event *pevent, PyObject *attr_name) 361 { 362 PyObject *obj = NULL; 363 364 #ifdef HAVE_LIBTRACEEVENT 365 if (is_tracepoint(pevent)) 366 obj = get_tracepoint_field(pevent, attr_name); 367 #endif 368 369 return obj ?: PyObject_GenericGetAttr((PyObject *) pevent, attr_name); 370 } 371 372 static PyTypeObject pyrf_sample_event__type = { 373 PyVarObject_HEAD_INIT(NULL, 0) 374 .tp_name = "perf.sample_event", 375 .tp_basicsize = sizeof(struct pyrf_event), 376 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE, 377 .tp_doc = pyrf_sample_event__doc, 378 .tp_members = pyrf_sample_event__members, 379 .tp_repr = (reprfunc)pyrf_sample_event__repr, 380 .tp_getattro = (getattrofunc) pyrf_sample_event__getattro, 381 }; 382 383 static const char pyrf_context_switch_event__doc[] = PyDoc_STR("perf context_switch event object."); 384 385 static PyMemberDef pyrf_context_switch_event__members[] = { 386 sample_members 387 member_def(perf_event_header, type, T_UINT, "event type"), 388 member_def(perf_record_switch, next_prev_pid, T_UINT, "next/prev pid"), 389 member_def(perf_record_switch, next_prev_tid, T_UINT, "next/prev tid"), 390 { .name = NULL, }, 391 }; 392 393 static PyObject *pyrf_context_switch_event__repr(const struct pyrf_event *pevent) 394 { 395 PyObject *ret; 396 char *s; 397 398 if (asprintf(&s, "{ type: context_switch, next_prev_pid: %u, next_prev_tid: %u, switch_out: %u }", 399 pevent->event.context_switch.next_prev_pid, 400 pevent->event.context_switch.next_prev_tid, 401 !!(pevent->event.header.misc & PERF_RECORD_MISC_SWITCH_OUT)) < 0) { 402 ret = PyErr_NoMemory(); 403 } else { 404 ret = PyUnicode_FromString(s); 405 free(s); 406 } 407 return ret; 408 } 409 410 static PyTypeObject pyrf_context_switch_event__type = { 411 PyVarObject_HEAD_INIT(NULL, 0) 412 .tp_name = "perf.context_switch_event", 413 .tp_basicsize = sizeof(struct pyrf_event), 414 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE, 415 .tp_doc = pyrf_context_switch_event__doc, 416 .tp_members = pyrf_context_switch_event__members, 417 .tp_repr = (reprfunc)pyrf_context_switch_event__repr, 418 }; 419 420 static int pyrf_event__setup_types(void) 421 { 422 int err; 423 pyrf_mmap_event__type.tp_new = 424 pyrf_task_event__type.tp_new = 425 pyrf_comm_event__type.tp_new = 426 pyrf_lost_event__type.tp_new = 427 pyrf_read_event__type.tp_new = 428 pyrf_sample_event__type.tp_new = 429 pyrf_context_switch_event__type.tp_new = 430 pyrf_throttle_event__type.tp_new = PyType_GenericNew; 431 err = PyType_Ready(&pyrf_mmap_event__type); 432 if (err < 0) 433 goto out; 434 err = PyType_Ready(&pyrf_lost_event__type); 435 if (err < 0) 436 goto out; 437 err = PyType_Ready(&pyrf_task_event__type); 438 if (err < 0) 439 goto out; 440 err = PyType_Ready(&pyrf_comm_event__type); 441 if (err < 0) 442 goto out; 443 err = PyType_Ready(&pyrf_throttle_event__type); 444 if (err < 0) 445 goto out; 446 err = PyType_Ready(&pyrf_read_event__type); 447 if (err < 0) 448 goto out; 449 err = PyType_Ready(&pyrf_sample_event__type); 450 if (err < 0) 451 goto out; 452 err = PyType_Ready(&pyrf_context_switch_event__type); 453 if (err < 0) 454 goto out; 455 out: 456 return err; 457 } 458 459 static PyTypeObject *pyrf_event__type[] = { 460 [PERF_RECORD_MMAP] = &pyrf_mmap_event__type, 461 [PERF_RECORD_LOST] = &pyrf_lost_event__type, 462 [PERF_RECORD_COMM] = &pyrf_comm_event__type, 463 [PERF_RECORD_EXIT] = &pyrf_task_event__type, 464 [PERF_RECORD_THROTTLE] = &pyrf_throttle_event__type, 465 [PERF_RECORD_UNTHROTTLE] = &pyrf_throttle_event__type, 466 [PERF_RECORD_FORK] = &pyrf_task_event__type, 467 [PERF_RECORD_READ] = &pyrf_read_event__type, 468 [PERF_RECORD_SAMPLE] = &pyrf_sample_event__type, 469 [PERF_RECORD_SWITCH] = &pyrf_context_switch_event__type, 470 [PERF_RECORD_SWITCH_CPU_WIDE] = &pyrf_context_switch_event__type, 471 }; 472 473 static PyObject *pyrf_event__new(const union perf_event *event) 474 { 475 struct pyrf_event *pevent; 476 PyTypeObject *ptype; 477 478 if ((event->header.type < PERF_RECORD_MMAP || 479 event->header.type > PERF_RECORD_SAMPLE) && 480 !(event->header.type == PERF_RECORD_SWITCH || 481 event->header.type == PERF_RECORD_SWITCH_CPU_WIDE)) 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 static const char pyrf_evsel__doc[] = PyDoc_STR("perf event selector list object."); 806 807 static PyTypeObject pyrf_evsel__type = { 808 PyVarObject_HEAD_INIT(NULL, 0) 809 .tp_name = "perf.evsel", 810 .tp_basicsize = sizeof(struct pyrf_evsel), 811 .tp_dealloc = (destructor)pyrf_evsel__delete, 812 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE, 813 .tp_doc = pyrf_evsel__doc, 814 .tp_methods = pyrf_evsel__methods, 815 .tp_init = (initproc)pyrf_evsel__init, 816 .tp_str = pyrf_evsel__str, 817 .tp_repr = pyrf_evsel__str, 818 }; 819 820 static int pyrf_evsel__setup_types(void) 821 { 822 pyrf_evsel__type.tp_new = PyType_GenericNew; 823 return PyType_Ready(&pyrf_evsel__type); 824 } 825 826 struct pyrf_evlist { 827 PyObject_HEAD 828 829 struct evlist evlist; 830 }; 831 832 static int pyrf_evlist__init(struct pyrf_evlist *pevlist, 833 PyObject *args, PyObject *kwargs __maybe_unused) 834 { 835 PyObject *pcpus = NULL, *pthreads = NULL; 836 struct perf_cpu_map *cpus; 837 struct perf_thread_map *threads; 838 839 if (!PyArg_ParseTuple(args, "OO", &pcpus, &pthreads)) 840 return -1; 841 842 threads = ((struct pyrf_thread_map *)pthreads)->threads; 843 cpus = ((struct pyrf_cpu_map *)pcpus)->cpus; 844 evlist__init(&pevlist->evlist, cpus, threads); 845 return 0; 846 } 847 848 static void pyrf_evlist__delete(struct pyrf_evlist *pevlist) 849 { 850 evlist__exit(&pevlist->evlist); 851 Py_TYPE(pevlist)->tp_free((PyObject*)pevlist); 852 } 853 854 static PyObject *pyrf_evlist__mmap(struct pyrf_evlist *pevlist, 855 PyObject *args, PyObject *kwargs) 856 { 857 struct evlist *evlist = &pevlist->evlist; 858 static char *kwlist[] = { "pages", "overwrite", NULL }; 859 int pages = 128, overwrite = false; 860 861 if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|ii", kwlist, 862 &pages, &overwrite)) 863 return NULL; 864 865 if (evlist__mmap(evlist, pages) < 0) { 866 PyErr_SetFromErrno(PyExc_OSError); 867 return NULL; 868 } 869 870 Py_INCREF(Py_None); 871 return Py_None; 872 } 873 874 static PyObject *pyrf_evlist__poll(struct pyrf_evlist *pevlist, 875 PyObject *args, PyObject *kwargs) 876 { 877 struct evlist *evlist = &pevlist->evlist; 878 static char *kwlist[] = { "timeout", NULL }; 879 int timeout = -1, n; 880 881 if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|i", kwlist, &timeout)) 882 return NULL; 883 884 n = evlist__poll(evlist, timeout); 885 if (n < 0) { 886 PyErr_SetFromErrno(PyExc_OSError); 887 return NULL; 888 } 889 890 return Py_BuildValue("i", n); 891 } 892 893 static PyObject *pyrf_evlist__get_pollfd(struct pyrf_evlist *pevlist, 894 PyObject *args __maybe_unused, 895 PyObject *kwargs __maybe_unused) 896 { 897 struct evlist *evlist = &pevlist->evlist; 898 PyObject *list = PyList_New(0); 899 int i; 900 901 for (i = 0; i < evlist->core.pollfd.nr; ++i) { 902 PyObject *file; 903 file = PyFile_FromFd(evlist->core.pollfd.entries[i].fd, "perf", "r", -1, 904 NULL, NULL, NULL, 0); 905 if (file == NULL) 906 goto free_list; 907 908 if (PyList_Append(list, file) != 0) { 909 Py_DECREF(file); 910 goto free_list; 911 } 912 913 Py_DECREF(file); 914 } 915 916 return list; 917 free_list: 918 return PyErr_NoMemory(); 919 } 920 921 922 static PyObject *pyrf_evlist__add(struct pyrf_evlist *pevlist, 923 PyObject *args, 924 PyObject *kwargs __maybe_unused) 925 { 926 struct evlist *evlist = &pevlist->evlist; 927 PyObject *pevsel; 928 struct evsel *evsel; 929 930 if (!PyArg_ParseTuple(args, "O", &pevsel)) 931 return NULL; 932 933 Py_INCREF(pevsel); 934 evsel = &((struct pyrf_evsel *)pevsel)->evsel; 935 evsel->core.idx = evlist->core.nr_entries; 936 evlist__add(evlist, evsel); 937 938 return Py_BuildValue("i", evlist->core.nr_entries); 939 } 940 941 static struct mmap *get_md(struct evlist *evlist, int cpu) 942 { 943 int i; 944 945 for (i = 0; i < evlist->core.nr_mmaps; i++) { 946 struct mmap *md = &evlist->mmap[i]; 947 948 if (md->core.cpu.cpu == cpu) 949 return md; 950 } 951 952 return NULL; 953 } 954 955 static PyObject *pyrf_evlist__read_on_cpu(struct pyrf_evlist *pevlist, 956 PyObject *args, PyObject *kwargs) 957 { 958 struct evlist *evlist = &pevlist->evlist; 959 union perf_event *event; 960 int sample_id_all = 1, cpu; 961 static char *kwlist[] = { "cpu", "sample_id_all", NULL }; 962 struct mmap *md; 963 int err; 964 965 if (!PyArg_ParseTupleAndKeywords(args, kwargs, "i|i", kwlist, 966 &cpu, &sample_id_all)) 967 return NULL; 968 969 md = get_md(evlist, cpu); 970 if (!md) 971 return NULL; 972 973 if (perf_mmap__read_init(&md->core) < 0) 974 goto end; 975 976 event = perf_mmap__read_event(&md->core); 977 if (event != NULL) { 978 PyObject *pyevent = pyrf_event__new(event); 979 struct pyrf_event *pevent = (struct pyrf_event *)pyevent; 980 struct evsel *evsel; 981 982 if (pyevent == NULL) 983 return PyErr_NoMemory(); 984 985 evsel = evlist__event2evsel(evlist, event); 986 if (!evsel) { 987 Py_INCREF(Py_None); 988 return Py_None; 989 } 990 991 pevent->evsel = evsel; 992 993 err = evsel__parse_sample(evsel, event, &pevent->sample); 994 995 /* Consume the even only after we parsed it out. */ 996 perf_mmap__consume(&md->core); 997 998 if (err) 999 return PyErr_Format(PyExc_OSError, 1000 "perf: can't parse sample, err=%d", err); 1001 return pyevent; 1002 } 1003 end: 1004 Py_INCREF(Py_None); 1005 return Py_None; 1006 } 1007 1008 static PyObject *pyrf_evlist__open(struct pyrf_evlist *pevlist, 1009 PyObject *args, PyObject *kwargs) 1010 { 1011 struct evlist *evlist = &pevlist->evlist; 1012 1013 if (evlist__open(evlist) < 0) { 1014 PyErr_SetFromErrno(PyExc_OSError); 1015 return NULL; 1016 } 1017 1018 Py_INCREF(Py_None); 1019 return Py_None; 1020 } 1021 1022 static PyMethodDef pyrf_evlist__methods[] = { 1023 { 1024 .ml_name = "mmap", 1025 .ml_meth = (PyCFunction)pyrf_evlist__mmap, 1026 .ml_flags = METH_VARARGS | METH_KEYWORDS, 1027 .ml_doc = PyDoc_STR("mmap the file descriptor table.") 1028 }, 1029 { 1030 .ml_name = "open", 1031 .ml_meth = (PyCFunction)pyrf_evlist__open, 1032 .ml_flags = METH_VARARGS | METH_KEYWORDS, 1033 .ml_doc = PyDoc_STR("open the file descriptors.") 1034 }, 1035 { 1036 .ml_name = "poll", 1037 .ml_meth = (PyCFunction)pyrf_evlist__poll, 1038 .ml_flags = METH_VARARGS | METH_KEYWORDS, 1039 .ml_doc = PyDoc_STR("poll the file descriptor table.") 1040 }, 1041 { 1042 .ml_name = "get_pollfd", 1043 .ml_meth = (PyCFunction)pyrf_evlist__get_pollfd, 1044 .ml_flags = METH_VARARGS | METH_KEYWORDS, 1045 .ml_doc = PyDoc_STR("get the poll file descriptor table.") 1046 }, 1047 { 1048 .ml_name = "add", 1049 .ml_meth = (PyCFunction)pyrf_evlist__add, 1050 .ml_flags = METH_VARARGS | METH_KEYWORDS, 1051 .ml_doc = PyDoc_STR("adds an event selector to the list.") 1052 }, 1053 { 1054 .ml_name = "read_on_cpu", 1055 .ml_meth = (PyCFunction)pyrf_evlist__read_on_cpu, 1056 .ml_flags = METH_VARARGS | METH_KEYWORDS, 1057 .ml_doc = PyDoc_STR("reads an event.") 1058 }, 1059 { .ml_name = NULL, } 1060 }; 1061 1062 static Py_ssize_t pyrf_evlist__length(PyObject *obj) 1063 { 1064 struct pyrf_evlist *pevlist = (void *)obj; 1065 1066 return pevlist->evlist.core.nr_entries; 1067 } 1068 1069 static PyObject *pyrf_evlist__item(PyObject *obj, Py_ssize_t i) 1070 { 1071 struct pyrf_evlist *pevlist = (void *)obj; 1072 struct evsel *pos; 1073 1074 if (i >= pevlist->evlist.core.nr_entries) { 1075 PyErr_SetString(PyExc_IndexError, "Index out of range"); 1076 return NULL; 1077 } 1078 1079 evlist__for_each_entry(&pevlist->evlist, pos) { 1080 if (i-- == 0) 1081 break; 1082 } 1083 1084 return Py_BuildValue("O", container_of(pos, struct pyrf_evsel, evsel)); 1085 } 1086 1087 static PyObject *pyrf_evlist__str(PyObject *self) 1088 { 1089 struct pyrf_evlist *pevlist = (void *)self; 1090 struct evsel *pos; 1091 struct strbuf sb = STRBUF_INIT; 1092 bool first = true; 1093 PyObject *result; 1094 1095 strbuf_addstr(&sb, "evlist(["); 1096 evlist__for_each_entry(&pevlist->evlist, pos) { 1097 if (!first) 1098 strbuf_addch(&sb, ','); 1099 if (!pos->pmu) 1100 strbuf_addstr(&sb, evsel__name(pos)); 1101 else 1102 strbuf_addf(&sb, "%s/%s/", pos->pmu->name, evsel__name(pos)); 1103 first = false; 1104 } 1105 strbuf_addstr(&sb, "])"); 1106 result = PyUnicode_FromString(sb.buf); 1107 strbuf_release(&sb); 1108 return result; 1109 } 1110 1111 static PySequenceMethods pyrf_evlist__sequence_methods = { 1112 .sq_length = pyrf_evlist__length, 1113 .sq_item = pyrf_evlist__item, 1114 }; 1115 1116 static const char pyrf_evlist__doc[] = PyDoc_STR("perf event selector list object."); 1117 1118 static PyTypeObject pyrf_evlist__type = { 1119 PyVarObject_HEAD_INIT(NULL, 0) 1120 .tp_name = "perf.evlist", 1121 .tp_basicsize = sizeof(struct pyrf_evlist), 1122 .tp_dealloc = (destructor)pyrf_evlist__delete, 1123 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE, 1124 .tp_as_sequence = &pyrf_evlist__sequence_methods, 1125 .tp_doc = pyrf_evlist__doc, 1126 .tp_methods = pyrf_evlist__methods, 1127 .tp_init = (initproc)pyrf_evlist__init, 1128 .tp_repr = pyrf_evlist__str, 1129 .tp_str = pyrf_evlist__str, 1130 }; 1131 1132 static int pyrf_evlist__setup_types(void) 1133 { 1134 pyrf_evlist__type.tp_new = PyType_GenericNew; 1135 return PyType_Ready(&pyrf_evlist__type); 1136 } 1137 1138 #define PERF_CONST(name) { #name, PERF_##name } 1139 1140 struct perf_constant { 1141 const char *name; 1142 int value; 1143 }; 1144 1145 static const struct perf_constant perf__constants[] = { 1146 PERF_CONST(TYPE_HARDWARE), 1147 PERF_CONST(TYPE_SOFTWARE), 1148 PERF_CONST(TYPE_TRACEPOINT), 1149 PERF_CONST(TYPE_HW_CACHE), 1150 PERF_CONST(TYPE_RAW), 1151 PERF_CONST(TYPE_BREAKPOINT), 1152 1153 PERF_CONST(COUNT_HW_CPU_CYCLES), 1154 PERF_CONST(COUNT_HW_INSTRUCTIONS), 1155 PERF_CONST(COUNT_HW_CACHE_REFERENCES), 1156 PERF_CONST(COUNT_HW_CACHE_MISSES), 1157 PERF_CONST(COUNT_HW_BRANCH_INSTRUCTIONS), 1158 PERF_CONST(COUNT_HW_BRANCH_MISSES), 1159 PERF_CONST(COUNT_HW_BUS_CYCLES), 1160 PERF_CONST(COUNT_HW_CACHE_L1D), 1161 PERF_CONST(COUNT_HW_CACHE_L1I), 1162 PERF_CONST(COUNT_HW_CACHE_LL), 1163 PERF_CONST(COUNT_HW_CACHE_DTLB), 1164 PERF_CONST(COUNT_HW_CACHE_ITLB), 1165 PERF_CONST(COUNT_HW_CACHE_BPU), 1166 PERF_CONST(COUNT_HW_CACHE_OP_READ), 1167 PERF_CONST(COUNT_HW_CACHE_OP_WRITE), 1168 PERF_CONST(COUNT_HW_CACHE_OP_PREFETCH), 1169 PERF_CONST(COUNT_HW_CACHE_RESULT_ACCESS), 1170 PERF_CONST(COUNT_HW_CACHE_RESULT_MISS), 1171 1172 PERF_CONST(COUNT_HW_STALLED_CYCLES_FRONTEND), 1173 PERF_CONST(COUNT_HW_STALLED_CYCLES_BACKEND), 1174 1175 PERF_CONST(COUNT_SW_CPU_CLOCK), 1176 PERF_CONST(COUNT_SW_TASK_CLOCK), 1177 PERF_CONST(COUNT_SW_PAGE_FAULTS), 1178 PERF_CONST(COUNT_SW_CONTEXT_SWITCHES), 1179 PERF_CONST(COUNT_SW_CPU_MIGRATIONS), 1180 PERF_CONST(COUNT_SW_PAGE_FAULTS_MIN), 1181 PERF_CONST(COUNT_SW_PAGE_FAULTS_MAJ), 1182 PERF_CONST(COUNT_SW_ALIGNMENT_FAULTS), 1183 PERF_CONST(COUNT_SW_EMULATION_FAULTS), 1184 PERF_CONST(COUNT_SW_DUMMY), 1185 1186 PERF_CONST(SAMPLE_IP), 1187 PERF_CONST(SAMPLE_TID), 1188 PERF_CONST(SAMPLE_TIME), 1189 PERF_CONST(SAMPLE_ADDR), 1190 PERF_CONST(SAMPLE_READ), 1191 PERF_CONST(SAMPLE_CALLCHAIN), 1192 PERF_CONST(SAMPLE_ID), 1193 PERF_CONST(SAMPLE_CPU), 1194 PERF_CONST(SAMPLE_PERIOD), 1195 PERF_CONST(SAMPLE_STREAM_ID), 1196 PERF_CONST(SAMPLE_RAW), 1197 1198 PERF_CONST(FORMAT_TOTAL_TIME_ENABLED), 1199 PERF_CONST(FORMAT_TOTAL_TIME_RUNNING), 1200 PERF_CONST(FORMAT_ID), 1201 PERF_CONST(FORMAT_GROUP), 1202 1203 PERF_CONST(RECORD_MMAP), 1204 PERF_CONST(RECORD_LOST), 1205 PERF_CONST(RECORD_COMM), 1206 PERF_CONST(RECORD_EXIT), 1207 PERF_CONST(RECORD_THROTTLE), 1208 PERF_CONST(RECORD_UNTHROTTLE), 1209 PERF_CONST(RECORD_FORK), 1210 PERF_CONST(RECORD_READ), 1211 PERF_CONST(RECORD_SAMPLE), 1212 PERF_CONST(RECORD_MMAP2), 1213 PERF_CONST(RECORD_AUX), 1214 PERF_CONST(RECORD_ITRACE_START), 1215 PERF_CONST(RECORD_LOST_SAMPLES), 1216 PERF_CONST(RECORD_SWITCH), 1217 PERF_CONST(RECORD_SWITCH_CPU_WIDE), 1218 1219 PERF_CONST(RECORD_MISC_SWITCH_OUT), 1220 { .name = NULL, }, 1221 }; 1222 1223 static PyObject *pyrf__tracepoint(struct pyrf_evsel *pevsel, 1224 PyObject *args, PyObject *kwargs) 1225 { 1226 #ifndef HAVE_LIBTRACEEVENT 1227 return NULL; 1228 #else 1229 struct tep_event *tp_format; 1230 static char *kwlist[] = { "sys", "name", NULL }; 1231 char *sys = NULL; 1232 char *name = NULL; 1233 1234 if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|ss", kwlist, 1235 &sys, &name)) 1236 return NULL; 1237 1238 tp_format = trace_event__tp_format(sys, name); 1239 if (IS_ERR(tp_format)) 1240 return PyLong_FromLong(-1); 1241 1242 return PyLong_FromLong(tp_format->id); 1243 #endif // HAVE_LIBTRACEEVENT 1244 } 1245 1246 static PyObject *pyrf_evsel__from_evsel(struct evsel *evsel) 1247 { 1248 struct pyrf_evsel *pevsel = PyObject_New(struct pyrf_evsel, &pyrf_evsel__type); 1249 1250 if (!pevsel) 1251 return NULL; 1252 1253 memset(&pevsel->evsel, 0, sizeof(pevsel->evsel)); 1254 evsel__init(&pevsel->evsel, &evsel->core.attr, evsel->core.idx); 1255 1256 evsel__clone(&pevsel->evsel, evsel); 1257 return (PyObject *)pevsel; 1258 } 1259 1260 static PyObject *pyrf_evlist__from_evlist(struct evlist *evlist) 1261 { 1262 struct pyrf_evlist *pevlist = PyObject_New(struct pyrf_evlist, &pyrf_evlist__type); 1263 struct evsel *pos; 1264 1265 if (!pevlist) 1266 return NULL; 1267 1268 memset(&pevlist->evlist, 0, sizeof(pevlist->evlist)); 1269 evlist__init(&pevlist->evlist, evlist->core.all_cpus, evlist->core.threads); 1270 evlist__for_each_entry(evlist, pos) { 1271 struct pyrf_evsel *pevsel = (void *)pyrf_evsel__from_evsel(pos); 1272 1273 evlist__add(&pevlist->evlist, &pevsel->evsel); 1274 } 1275 return (PyObject *)pevlist; 1276 } 1277 1278 static PyObject *pyrf__parse_events(PyObject *self, PyObject *args) 1279 { 1280 const char *input; 1281 struct evlist evlist = {}; 1282 struct parse_events_error err; 1283 PyObject *result; 1284 1285 if (!PyArg_ParseTuple(args, "s", &input)) 1286 return NULL; 1287 1288 parse_events_error__init(&err); 1289 evlist__init(&evlist, NULL, NULL); 1290 if (parse_events(&evlist, input, &err)) { 1291 parse_events_error__print(&err, input); 1292 PyErr_SetFromErrno(PyExc_OSError); 1293 return NULL; 1294 } 1295 result = pyrf_evlist__from_evlist(&evlist); 1296 evlist__exit(&evlist); 1297 return result; 1298 } 1299 1300 static PyMethodDef perf__methods[] = { 1301 { 1302 .ml_name = "tracepoint", 1303 .ml_meth = (PyCFunction) pyrf__tracepoint, 1304 .ml_flags = METH_VARARGS | METH_KEYWORDS, 1305 .ml_doc = PyDoc_STR("Get tracepoint config.") 1306 }, 1307 { 1308 .ml_name = "parse_events", 1309 .ml_meth = (PyCFunction) pyrf__parse_events, 1310 .ml_flags = METH_VARARGS, 1311 .ml_doc = PyDoc_STR("Parse a string of events and return an evlist.") 1312 }, 1313 { .ml_name = NULL, } 1314 }; 1315 1316 PyMODINIT_FUNC PyInit_perf(void) 1317 { 1318 PyObject *obj; 1319 int i; 1320 PyObject *dict; 1321 static struct PyModuleDef moduledef = { 1322 PyModuleDef_HEAD_INIT, 1323 "perf", /* m_name */ 1324 "", /* m_doc */ 1325 -1, /* m_size */ 1326 perf__methods, /* m_methods */ 1327 NULL, /* m_reload */ 1328 NULL, /* m_traverse */ 1329 NULL, /* m_clear */ 1330 NULL, /* m_free */ 1331 }; 1332 PyObject *module = PyModule_Create(&moduledef); 1333 1334 if (module == NULL || 1335 pyrf_event__setup_types() < 0 || 1336 pyrf_evlist__setup_types() < 0 || 1337 pyrf_evsel__setup_types() < 0 || 1338 pyrf_thread_map__setup_types() < 0 || 1339 pyrf_cpu_map__setup_types() < 0) 1340 return module; 1341 1342 /* The page_size is placed in util object. */ 1343 page_size = sysconf(_SC_PAGE_SIZE); 1344 1345 Py_INCREF(&pyrf_evlist__type); 1346 PyModule_AddObject(module, "evlist", (PyObject*)&pyrf_evlist__type); 1347 1348 Py_INCREF(&pyrf_evsel__type); 1349 PyModule_AddObject(module, "evsel", (PyObject*)&pyrf_evsel__type); 1350 1351 Py_INCREF(&pyrf_mmap_event__type); 1352 PyModule_AddObject(module, "mmap_event", (PyObject *)&pyrf_mmap_event__type); 1353 1354 Py_INCREF(&pyrf_lost_event__type); 1355 PyModule_AddObject(module, "lost_event", (PyObject *)&pyrf_lost_event__type); 1356 1357 Py_INCREF(&pyrf_comm_event__type); 1358 PyModule_AddObject(module, "comm_event", (PyObject *)&pyrf_comm_event__type); 1359 1360 Py_INCREF(&pyrf_task_event__type); 1361 PyModule_AddObject(module, "task_event", (PyObject *)&pyrf_task_event__type); 1362 1363 Py_INCREF(&pyrf_throttle_event__type); 1364 PyModule_AddObject(module, "throttle_event", (PyObject *)&pyrf_throttle_event__type); 1365 1366 Py_INCREF(&pyrf_task_event__type); 1367 PyModule_AddObject(module, "task_event", (PyObject *)&pyrf_task_event__type); 1368 1369 Py_INCREF(&pyrf_read_event__type); 1370 PyModule_AddObject(module, "read_event", (PyObject *)&pyrf_read_event__type); 1371 1372 Py_INCREF(&pyrf_sample_event__type); 1373 PyModule_AddObject(module, "sample_event", (PyObject *)&pyrf_sample_event__type); 1374 1375 Py_INCREF(&pyrf_context_switch_event__type); 1376 PyModule_AddObject(module, "switch_event", (PyObject *)&pyrf_context_switch_event__type); 1377 1378 Py_INCREF(&pyrf_thread_map__type); 1379 PyModule_AddObject(module, "thread_map", (PyObject*)&pyrf_thread_map__type); 1380 1381 Py_INCREF(&pyrf_cpu_map__type); 1382 PyModule_AddObject(module, "cpu_map", (PyObject*)&pyrf_cpu_map__type); 1383 1384 dict = PyModule_GetDict(module); 1385 if (dict == NULL) 1386 goto error; 1387 1388 for (i = 0; perf__constants[i].name != NULL; i++) { 1389 obj = PyLong_FromLong(perf__constants[i].value); 1390 if (obj == NULL) 1391 goto error; 1392 PyDict_SetItemString(dict, perf__constants[i].name, obj); 1393 Py_DECREF(obj); 1394 } 1395 1396 error: 1397 if (PyErr_Occurred()) 1398 PyErr_SetString(PyExc_ImportError, "perf: Init failed!"); 1399 return module; 1400 } 1401