1 #include <Python.h> 2 #include <structmember.h> 3 #include <inttypes.h> 4 #include <poll.h> 5 #include "evlist.h" 6 #include "evsel.h" 7 #include "event.h" 8 #include "cpumap.h" 9 #include "thread_map.h" 10 11 /* Define PyVarObject_HEAD_INIT for python 2.5 */ 12 #ifndef PyVarObject_HEAD_INIT 13 # define PyVarObject_HEAD_INIT(type, size) PyObject_HEAD_INIT(type) size, 14 #endif 15 16 struct throttle_event { 17 struct perf_event_header header; 18 u64 time; 19 u64 id; 20 u64 stream_id; 21 }; 22 23 PyMODINIT_FUNC initperf(void); 24 25 #define member_def(type, member, ptype, help) \ 26 { #member, ptype, \ 27 offsetof(struct pyrf_event, event) + offsetof(struct type, member), \ 28 0, help } 29 30 #define sample_member_def(name, member, ptype, help) \ 31 { #name, ptype, \ 32 offsetof(struct pyrf_event, sample) + offsetof(struct perf_sample, member), \ 33 0, help } 34 35 struct pyrf_event { 36 PyObject_HEAD 37 struct perf_sample sample; 38 union perf_event event; 39 }; 40 41 #define sample_members \ 42 sample_member_def(sample_ip, ip, T_ULONGLONG, "event type"), \ 43 sample_member_def(sample_pid, pid, T_INT, "event pid"), \ 44 sample_member_def(sample_tid, tid, T_INT, "event tid"), \ 45 sample_member_def(sample_time, time, T_ULONGLONG, "event timestamp"), \ 46 sample_member_def(sample_addr, addr, T_ULONGLONG, "event addr"), \ 47 sample_member_def(sample_id, id, T_ULONGLONG, "event id"), \ 48 sample_member_def(sample_stream_id, stream_id, T_ULONGLONG, "event stream id"), \ 49 sample_member_def(sample_period, period, T_ULONGLONG, "event period"), \ 50 sample_member_def(sample_cpu, cpu, T_UINT, "event cpu"), 51 52 static char pyrf_mmap_event__doc[] = PyDoc_STR("perf mmap event object."); 53 54 static PyMemberDef pyrf_mmap_event__members[] = { 55 sample_members 56 member_def(perf_event_header, type, T_UINT, "event type"), 57 member_def(mmap_event, pid, T_UINT, "event pid"), 58 member_def(mmap_event, tid, T_UINT, "event tid"), 59 member_def(mmap_event, start, T_ULONGLONG, "start of the map"), 60 member_def(mmap_event, len, T_ULONGLONG, "map length"), 61 member_def(mmap_event, pgoff, T_ULONGLONG, "page offset"), 62 member_def(mmap_event, filename, T_STRING_INPLACE, "backing store"), 63 { .name = NULL, }, 64 }; 65 66 static PyObject *pyrf_mmap_event__repr(struct pyrf_event *pevent) 67 { 68 PyObject *ret; 69 char *s; 70 71 if (asprintf(&s, "{ type: mmap, pid: %u, tid: %u, start: %#" PRIx64 ", " 72 "length: %#" PRIx64 ", offset: %#" PRIx64 ", " 73 "filename: %s }", 74 pevent->event.mmap.pid, pevent->event.mmap.tid, 75 pevent->event.mmap.start, pevent->event.mmap.len, 76 pevent->event.mmap.pgoff, pevent->event.mmap.filename) < 0) { 77 ret = PyErr_NoMemory(); 78 } else { 79 ret = PyString_FromString(s); 80 free(s); 81 } 82 return ret; 83 } 84 85 static PyTypeObject pyrf_mmap_event__type = { 86 PyVarObject_HEAD_INIT(NULL, 0) 87 .tp_name = "perf.mmap_event", 88 .tp_basicsize = sizeof(struct pyrf_event), 89 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE, 90 .tp_doc = pyrf_mmap_event__doc, 91 .tp_members = pyrf_mmap_event__members, 92 .tp_repr = (reprfunc)pyrf_mmap_event__repr, 93 }; 94 95 static char pyrf_task_event__doc[] = PyDoc_STR("perf task (fork/exit) event object."); 96 97 static PyMemberDef pyrf_task_event__members[] = { 98 sample_members 99 member_def(perf_event_header, type, T_UINT, "event type"), 100 member_def(fork_event, pid, T_UINT, "event pid"), 101 member_def(fork_event, ppid, T_UINT, "event ppid"), 102 member_def(fork_event, tid, T_UINT, "event tid"), 103 member_def(fork_event, ptid, T_UINT, "event ptid"), 104 member_def(fork_event, time, T_ULONGLONG, "timestamp"), 105 { .name = NULL, }, 106 }; 107 108 static PyObject *pyrf_task_event__repr(struct pyrf_event *pevent) 109 { 110 return PyString_FromFormat("{ type: %s, pid: %u, ppid: %u, tid: %u, " 111 "ptid: %u, time: %" PRIu64 "}", 112 pevent->event.header.type == PERF_RECORD_FORK ? "fork" : "exit", 113 pevent->event.fork.pid, 114 pevent->event.fork.ppid, 115 pevent->event.fork.tid, 116 pevent->event.fork.ptid, 117 pevent->event.fork.time); 118 } 119 120 static PyTypeObject pyrf_task_event__type = { 121 PyVarObject_HEAD_INIT(NULL, 0) 122 .tp_name = "perf.task_event", 123 .tp_basicsize = sizeof(struct pyrf_event), 124 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE, 125 .tp_doc = pyrf_task_event__doc, 126 .tp_members = pyrf_task_event__members, 127 .tp_repr = (reprfunc)pyrf_task_event__repr, 128 }; 129 130 static char pyrf_comm_event__doc[] = PyDoc_STR("perf comm event object."); 131 132 static PyMemberDef pyrf_comm_event__members[] = { 133 sample_members 134 member_def(perf_event_header, type, T_UINT, "event type"), 135 member_def(comm_event, pid, T_UINT, "event pid"), 136 member_def(comm_event, tid, T_UINT, "event tid"), 137 member_def(comm_event, comm, T_STRING_INPLACE, "process name"), 138 { .name = NULL, }, 139 }; 140 141 static PyObject *pyrf_comm_event__repr(struct pyrf_event *pevent) 142 { 143 return PyString_FromFormat("{ type: comm, pid: %u, tid: %u, comm: %s }", 144 pevent->event.comm.pid, 145 pevent->event.comm.tid, 146 pevent->event.comm.comm); 147 } 148 149 static PyTypeObject pyrf_comm_event__type = { 150 PyVarObject_HEAD_INIT(NULL, 0) 151 .tp_name = "perf.comm_event", 152 .tp_basicsize = sizeof(struct pyrf_event), 153 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE, 154 .tp_doc = pyrf_comm_event__doc, 155 .tp_members = pyrf_comm_event__members, 156 .tp_repr = (reprfunc)pyrf_comm_event__repr, 157 }; 158 159 static char pyrf_throttle_event__doc[] = PyDoc_STR("perf throttle event object."); 160 161 static PyMemberDef pyrf_throttle_event__members[] = { 162 sample_members 163 member_def(perf_event_header, type, T_UINT, "event type"), 164 member_def(throttle_event, time, T_ULONGLONG, "timestamp"), 165 member_def(throttle_event, id, T_ULONGLONG, "event id"), 166 member_def(throttle_event, stream_id, T_ULONGLONG, "event stream id"), 167 { .name = NULL, }, 168 }; 169 170 static PyObject *pyrf_throttle_event__repr(struct pyrf_event *pevent) 171 { 172 struct throttle_event *te = (struct throttle_event *)(&pevent->event.header + 1); 173 174 return PyString_FromFormat("{ type: %sthrottle, time: %" PRIu64 ", id: %" PRIu64 175 ", stream_id: %" PRIu64 " }", 176 pevent->event.header.type == PERF_RECORD_THROTTLE ? "" : "un", 177 te->time, te->id, te->stream_id); 178 } 179 180 static PyTypeObject pyrf_throttle_event__type = { 181 PyVarObject_HEAD_INIT(NULL, 0) 182 .tp_name = "perf.throttle_event", 183 .tp_basicsize = sizeof(struct pyrf_event), 184 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE, 185 .tp_doc = pyrf_throttle_event__doc, 186 .tp_members = pyrf_throttle_event__members, 187 .tp_repr = (reprfunc)pyrf_throttle_event__repr, 188 }; 189 190 static char pyrf_lost_event__doc[] = PyDoc_STR("perf lost event object."); 191 192 static PyMemberDef pyrf_lost_event__members[] = { 193 sample_members 194 member_def(lost_event, id, T_ULONGLONG, "event id"), 195 member_def(lost_event, lost, T_ULONGLONG, "number of lost events"), 196 { .name = NULL, }, 197 }; 198 199 static PyObject *pyrf_lost_event__repr(struct pyrf_event *pevent) 200 { 201 PyObject *ret; 202 char *s; 203 204 if (asprintf(&s, "{ type: lost, id: %#" PRIx64 ", " 205 "lost: %#" PRIx64 " }", 206 pevent->event.lost.id, pevent->event.lost.lost) < 0) { 207 ret = PyErr_NoMemory(); 208 } else { 209 ret = PyString_FromString(s); 210 free(s); 211 } 212 return ret; 213 } 214 215 static PyTypeObject pyrf_lost_event__type = { 216 PyVarObject_HEAD_INIT(NULL, 0) 217 .tp_name = "perf.lost_event", 218 .tp_basicsize = sizeof(struct pyrf_event), 219 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE, 220 .tp_doc = pyrf_lost_event__doc, 221 .tp_members = pyrf_lost_event__members, 222 .tp_repr = (reprfunc)pyrf_lost_event__repr, 223 }; 224 225 static char pyrf_read_event__doc[] = PyDoc_STR("perf read event object."); 226 227 static PyMemberDef pyrf_read_event__members[] = { 228 sample_members 229 member_def(read_event, pid, T_UINT, "event pid"), 230 member_def(read_event, tid, T_UINT, "event tid"), 231 { .name = NULL, }, 232 }; 233 234 static PyObject *pyrf_read_event__repr(struct pyrf_event *pevent) 235 { 236 return PyString_FromFormat("{ type: read, pid: %u, tid: %u }", 237 pevent->event.read.pid, 238 pevent->event.read.tid); 239 /* 240 * FIXME: return the array of read values, 241 * making this method useful ;-) 242 */ 243 } 244 245 static PyTypeObject pyrf_read_event__type = { 246 PyVarObject_HEAD_INIT(NULL, 0) 247 .tp_name = "perf.read_event", 248 .tp_basicsize = sizeof(struct pyrf_event), 249 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE, 250 .tp_doc = pyrf_read_event__doc, 251 .tp_members = pyrf_read_event__members, 252 .tp_repr = (reprfunc)pyrf_read_event__repr, 253 }; 254 255 static char pyrf_sample_event__doc[] = PyDoc_STR("perf sample event object."); 256 257 static PyMemberDef pyrf_sample_event__members[] = { 258 sample_members 259 member_def(perf_event_header, type, T_UINT, "event type"), 260 { .name = NULL, }, 261 }; 262 263 static PyObject *pyrf_sample_event__repr(struct pyrf_event *pevent) 264 { 265 PyObject *ret; 266 char *s; 267 268 if (asprintf(&s, "{ type: sample }") < 0) { 269 ret = PyErr_NoMemory(); 270 } else { 271 ret = PyString_FromString(s); 272 free(s); 273 } 274 return ret; 275 } 276 277 static PyTypeObject pyrf_sample_event__type = { 278 PyVarObject_HEAD_INIT(NULL, 0) 279 .tp_name = "perf.sample_event", 280 .tp_basicsize = sizeof(struct pyrf_event), 281 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE, 282 .tp_doc = pyrf_sample_event__doc, 283 .tp_members = pyrf_sample_event__members, 284 .tp_repr = (reprfunc)pyrf_sample_event__repr, 285 }; 286 287 static int pyrf_event__setup_types(void) 288 { 289 int err; 290 pyrf_mmap_event__type.tp_new = 291 pyrf_task_event__type.tp_new = 292 pyrf_comm_event__type.tp_new = 293 pyrf_lost_event__type.tp_new = 294 pyrf_read_event__type.tp_new = 295 pyrf_sample_event__type.tp_new = 296 pyrf_throttle_event__type.tp_new = PyType_GenericNew; 297 err = PyType_Ready(&pyrf_mmap_event__type); 298 if (err < 0) 299 goto out; 300 err = PyType_Ready(&pyrf_lost_event__type); 301 if (err < 0) 302 goto out; 303 err = PyType_Ready(&pyrf_task_event__type); 304 if (err < 0) 305 goto out; 306 err = PyType_Ready(&pyrf_comm_event__type); 307 if (err < 0) 308 goto out; 309 err = PyType_Ready(&pyrf_throttle_event__type); 310 if (err < 0) 311 goto out; 312 err = PyType_Ready(&pyrf_read_event__type); 313 if (err < 0) 314 goto out; 315 err = PyType_Ready(&pyrf_sample_event__type); 316 if (err < 0) 317 goto out; 318 out: 319 return err; 320 } 321 322 static PyTypeObject *pyrf_event__type[] = { 323 [PERF_RECORD_MMAP] = &pyrf_mmap_event__type, 324 [PERF_RECORD_LOST] = &pyrf_lost_event__type, 325 [PERF_RECORD_COMM] = &pyrf_comm_event__type, 326 [PERF_RECORD_EXIT] = &pyrf_task_event__type, 327 [PERF_RECORD_THROTTLE] = &pyrf_throttle_event__type, 328 [PERF_RECORD_UNTHROTTLE] = &pyrf_throttle_event__type, 329 [PERF_RECORD_FORK] = &pyrf_task_event__type, 330 [PERF_RECORD_READ] = &pyrf_read_event__type, 331 [PERF_RECORD_SAMPLE] = &pyrf_sample_event__type, 332 }; 333 334 static PyObject *pyrf_event__new(union perf_event *event) 335 { 336 struct pyrf_event *pevent; 337 PyTypeObject *ptype; 338 339 if (event->header.type < PERF_RECORD_MMAP || 340 event->header.type > PERF_RECORD_SAMPLE) 341 return NULL; 342 343 ptype = pyrf_event__type[event->header.type]; 344 pevent = PyObject_New(struct pyrf_event, ptype); 345 if (pevent != NULL) 346 memcpy(&pevent->event, event, event->header.size); 347 return (PyObject *)pevent; 348 } 349 350 struct pyrf_cpu_map { 351 PyObject_HEAD 352 353 struct cpu_map *cpus; 354 }; 355 356 static int pyrf_cpu_map__init(struct pyrf_cpu_map *pcpus, 357 PyObject *args, PyObject *kwargs) 358 { 359 static char *kwlist[] = { "cpustr", NULL }; 360 char *cpustr = NULL; 361 362 if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|s", 363 kwlist, &cpustr)) 364 return -1; 365 366 pcpus->cpus = cpu_map__new(cpustr); 367 if (pcpus->cpus == NULL) 368 return -1; 369 return 0; 370 } 371 372 static void pyrf_cpu_map__delete(struct pyrf_cpu_map *pcpus) 373 { 374 cpu_map__delete(pcpus->cpus); 375 pcpus->ob_type->tp_free((PyObject*)pcpus); 376 } 377 378 static Py_ssize_t pyrf_cpu_map__length(PyObject *obj) 379 { 380 struct pyrf_cpu_map *pcpus = (void *)obj; 381 382 return pcpus->cpus->nr; 383 } 384 385 static PyObject *pyrf_cpu_map__item(PyObject *obj, Py_ssize_t i) 386 { 387 struct pyrf_cpu_map *pcpus = (void *)obj; 388 389 if (i >= pcpus->cpus->nr) 390 return NULL; 391 392 return Py_BuildValue("i", pcpus->cpus->map[i]); 393 } 394 395 static PySequenceMethods pyrf_cpu_map__sequence_methods = { 396 .sq_length = pyrf_cpu_map__length, 397 .sq_item = pyrf_cpu_map__item, 398 }; 399 400 static char pyrf_cpu_map__doc[] = PyDoc_STR("cpu map object."); 401 402 static PyTypeObject pyrf_cpu_map__type = { 403 PyVarObject_HEAD_INIT(NULL, 0) 404 .tp_name = "perf.cpu_map", 405 .tp_basicsize = sizeof(struct pyrf_cpu_map), 406 .tp_dealloc = (destructor)pyrf_cpu_map__delete, 407 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE, 408 .tp_doc = pyrf_cpu_map__doc, 409 .tp_as_sequence = &pyrf_cpu_map__sequence_methods, 410 .tp_init = (initproc)pyrf_cpu_map__init, 411 }; 412 413 static int pyrf_cpu_map__setup_types(void) 414 { 415 pyrf_cpu_map__type.tp_new = PyType_GenericNew; 416 return PyType_Ready(&pyrf_cpu_map__type); 417 } 418 419 struct pyrf_thread_map { 420 PyObject_HEAD 421 422 struct thread_map *threads; 423 }; 424 425 static int pyrf_thread_map__init(struct pyrf_thread_map *pthreads, 426 PyObject *args, PyObject *kwargs) 427 { 428 static char *kwlist[] = { "pid", "tid", NULL }; 429 int pid = -1, tid = -1; 430 431 if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|ii", 432 kwlist, &pid, &tid)) 433 return -1; 434 435 pthreads->threads = thread_map__new(pid, tid); 436 if (pthreads->threads == NULL) 437 return -1; 438 return 0; 439 } 440 441 static void pyrf_thread_map__delete(struct pyrf_thread_map *pthreads) 442 { 443 thread_map__delete(pthreads->threads); 444 pthreads->ob_type->tp_free((PyObject*)pthreads); 445 } 446 447 static Py_ssize_t pyrf_thread_map__length(PyObject *obj) 448 { 449 struct pyrf_thread_map *pthreads = (void *)obj; 450 451 return pthreads->threads->nr; 452 } 453 454 static PyObject *pyrf_thread_map__item(PyObject *obj, Py_ssize_t i) 455 { 456 struct pyrf_thread_map *pthreads = (void *)obj; 457 458 if (i >= pthreads->threads->nr) 459 return NULL; 460 461 return Py_BuildValue("i", pthreads->threads->map[i]); 462 } 463 464 static PySequenceMethods pyrf_thread_map__sequence_methods = { 465 .sq_length = pyrf_thread_map__length, 466 .sq_item = pyrf_thread_map__item, 467 }; 468 469 static char pyrf_thread_map__doc[] = PyDoc_STR("thread map object."); 470 471 static PyTypeObject pyrf_thread_map__type = { 472 PyVarObject_HEAD_INIT(NULL, 0) 473 .tp_name = "perf.thread_map", 474 .tp_basicsize = sizeof(struct pyrf_thread_map), 475 .tp_dealloc = (destructor)pyrf_thread_map__delete, 476 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE, 477 .tp_doc = pyrf_thread_map__doc, 478 .tp_as_sequence = &pyrf_thread_map__sequence_methods, 479 .tp_init = (initproc)pyrf_thread_map__init, 480 }; 481 482 static int pyrf_thread_map__setup_types(void) 483 { 484 pyrf_thread_map__type.tp_new = PyType_GenericNew; 485 return PyType_Ready(&pyrf_thread_map__type); 486 } 487 488 struct pyrf_evsel { 489 PyObject_HEAD 490 491 struct perf_evsel evsel; 492 }; 493 494 static int pyrf_evsel__init(struct pyrf_evsel *pevsel, 495 PyObject *args, PyObject *kwargs) 496 { 497 struct perf_event_attr attr = { 498 .type = PERF_TYPE_HARDWARE, 499 .config = PERF_COUNT_HW_CPU_CYCLES, 500 .sample_type = PERF_SAMPLE_PERIOD | PERF_SAMPLE_TID, 501 }; 502 static char *kwlist[] = { 503 "type", 504 "config", 505 "sample_freq", 506 "sample_period", 507 "sample_type", 508 "read_format", 509 "disabled", 510 "inherit", 511 "pinned", 512 "exclusive", 513 "exclude_user", 514 "exclude_kernel", 515 "exclude_hv", 516 "exclude_idle", 517 "mmap", 518 "comm", 519 "freq", 520 "inherit_stat", 521 "enable_on_exec", 522 "task", 523 "watermark", 524 "precise_ip", 525 "mmap_data", 526 "sample_id_all", 527 "wakeup_events", 528 "bp_type", 529 "bp_addr", 530 "bp_len", 531 NULL 532 }; 533 u64 sample_period = 0; 534 u32 disabled = 0, 535 inherit = 0, 536 pinned = 0, 537 exclusive = 0, 538 exclude_user = 0, 539 exclude_kernel = 0, 540 exclude_hv = 0, 541 exclude_idle = 0, 542 mmap = 0, 543 comm = 0, 544 freq = 1, 545 inherit_stat = 0, 546 enable_on_exec = 0, 547 task = 0, 548 watermark = 0, 549 precise_ip = 0, 550 mmap_data = 0, 551 sample_id_all = 1; 552 int idx = 0; 553 554 if (!PyArg_ParseTupleAndKeywords(args, kwargs, 555 "|iKiKKiiiiiiiiiiiiiiiiiiiiiKK", kwlist, 556 &attr.type, &attr.config, &attr.sample_freq, 557 &sample_period, &attr.sample_type, 558 &attr.read_format, &disabled, &inherit, 559 &pinned, &exclusive, &exclude_user, 560 &exclude_kernel, &exclude_hv, &exclude_idle, 561 &mmap, &comm, &freq, &inherit_stat, 562 &enable_on_exec, &task, &watermark, 563 &precise_ip, &mmap_data, &sample_id_all, 564 &attr.wakeup_events, &attr.bp_type, 565 &attr.bp_addr, &attr.bp_len, &idx)) 566 return -1; 567 568 /* union... */ 569 if (sample_period != 0) { 570 if (attr.sample_freq != 0) 571 return -1; /* FIXME: throw right exception */ 572 attr.sample_period = sample_period; 573 } 574 575 /* Bitfields */ 576 attr.disabled = disabled; 577 attr.inherit = inherit; 578 attr.pinned = pinned; 579 attr.exclusive = exclusive; 580 attr.exclude_user = exclude_user; 581 attr.exclude_kernel = exclude_kernel; 582 attr.exclude_hv = exclude_hv; 583 attr.exclude_idle = exclude_idle; 584 attr.mmap = mmap; 585 attr.comm = comm; 586 attr.freq = freq; 587 attr.inherit_stat = inherit_stat; 588 attr.enable_on_exec = enable_on_exec; 589 attr.task = task; 590 attr.watermark = watermark; 591 attr.precise_ip = precise_ip; 592 attr.mmap_data = mmap_data; 593 attr.sample_id_all = sample_id_all; 594 595 perf_evsel__init(&pevsel->evsel, &attr, idx); 596 return 0; 597 } 598 599 static void pyrf_evsel__delete(struct pyrf_evsel *pevsel) 600 { 601 perf_evsel__exit(&pevsel->evsel); 602 pevsel->ob_type->tp_free((PyObject*)pevsel); 603 } 604 605 static PyObject *pyrf_evsel__open(struct pyrf_evsel *pevsel, 606 PyObject *args, PyObject *kwargs) 607 { 608 struct perf_evsel *evsel = &pevsel->evsel; 609 struct cpu_map *cpus = NULL; 610 struct thread_map *threads = NULL; 611 PyObject *pcpus = NULL, *pthreads = NULL; 612 int group = 0, inherit = 0; 613 static char *kwlist[] = { "cpus", "threads", "group", "inherit", NULL }; 614 615 if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|OOii", kwlist, 616 &pcpus, &pthreads, &group, &inherit)) 617 return NULL; 618 619 if (pthreads != NULL) 620 threads = ((struct pyrf_thread_map *)pthreads)->threads; 621 622 if (pcpus != NULL) 623 cpus = ((struct pyrf_cpu_map *)pcpus)->cpus; 624 625 evsel->attr.inherit = inherit; 626 /* 627 * This will group just the fds for this single evsel, to group 628 * multiple events, use evlist.open(). 629 */ 630 if (perf_evsel__open(evsel, cpus, threads, group, NULL) < 0) { 631 PyErr_SetFromErrno(PyExc_OSError); 632 return NULL; 633 } 634 635 Py_INCREF(Py_None); 636 return Py_None; 637 } 638 639 static PyMethodDef pyrf_evsel__methods[] = { 640 { 641 .ml_name = "open", 642 .ml_meth = (PyCFunction)pyrf_evsel__open, 643 .ml_flags = METH_VARARGS | METH_KEYWORDS, 644 .ml_doc = PyDoc_STR("open the event selector file descriptor table.") 645 }, 646 { .ml_name = NULL, } 647 }; 648 649 static char pyrf_evsel__doc[] = PyDoc_STR("perf event selector list object."); 650 651 static PyTypeObject pyrf_evsel__type = { 652 PyVarObject_HEAD_INIT(NULL, 0) 653 .tp_name = "perf.evsel", 654 .tp_basicsize = sizeof(struct pyrf_evsel), 655 .tp_dealloc = (destructor)pyrf_evsel__delete, 656 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE, 657 .tp_doc = pyrf_evsel__doc, 658 .tp_methods = pyrf_evsel__methods, 659 .tp_init = (initproc)pyrf_evsel__init, 660 }; 661 662 static int pyrf_evsel__setup_types(void) 663 { 664 pyrf_evsel__type.tp_new = PyType_GenericNew; 665 return PyType_Ready(&pyrf_evsel__type); 666 } 667 668 struct pyrf_evlist { 669 PyObject_HEAD 670 671 struct perf_evlist evlist; 672 }; 673 674 static int pyrf_evlist__init(struct pyrf_evlist *pevlist, 675 PyObject *args, PyObject *kwargs __used) 676 { 677 PyObject *pcpus = NULL, *pthreads = NULL; 678 struct cpu_map *cpus; 679 struct thread_map *threads; 680 681 if (!PyArg_ParseTuple(args, "OO", &pcpus, &pthreads)) 682 return -1; 683 684 threads = ((struct pyrf_thread_map *)pthreads)->threads; 685 cpus = ((struct pyrf_cpu_map *)pcpus)->cpus; 686 perf_evlist__init(&pevlist->evlist, cpus, threads); 687 return 0; 688 } 689 690 static void pyrf_evlist__delete(struct pyrf_evlist *pevlist) 691 { 692 perf_evlist__exit(&pevlist->evlist); 693 pevlist->ob_type->tp_free((PyObject*)pevlist); 694 } 695 696 static PyObject *pyrf_evlist__mmap(struct pyrf_evlist *pevlist, 697 PyObject *args, PyObject *kwargs) 698 { 699 struct perf_evlist *evlist = &pevlist->evlist; 700 static char *kwlist[] = { "pages", "overwrite", NULL }; 701 int pages = 128, overwrite = false; 702 703 if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|ii", kwlist, 704 &pages, &overwrite)) 705 return NULL; 706 707 if (perf_evlist__mmap(evlist, pages, overwrite) < 0) { 708 PyErr_SetFromErrno(PyExc_OSError); 709 return NULL; 710 } 711 712 Py_INCREF(Py_None); 713 return Py_None; 714 } 715 716 static PyObject *pyrf_evlist__poll(struct pyrf_evlist *pevlist, 717 PyObject *args, PyObject *kwargs) 718 { 719 struct perf_evlist *evlist = &pevlist->evlist; 720 static char *kwlist[] = { "timeout", NULL }; 721 int timeout = -1, n; 722 723 if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|i", kwlist, &timeout)) 724 return NULL; 725 726 n = poll(evlist->pollfd, evlist->nr_fds, timeout); 727 if (n < 0) { 728 PyErr_SetFromErrno(PyExc_OSError); 729 return NULL; 730 } 731 732 return Py_BuildValue("i", n); 733 } 734 735 static PyObject *pyrf_evlist__get_pollfd(struct pyrf_evlist *pevlist, 736 PyObject *args __used, PyObject *kwargs __used) 737 { 738 struct perf_evlist *evlist = &pevlist->evlist; 739 PyObject *list = PyList_New(0); 740 int i; 741 742 for (i = 0; i < evlist->nr_fds; ++i) { 743 PyObject *file; 744 FILE *fp = fdopen(evlist->pollfd[i].fd, "r"); 745 746 if (fp == NULL) 747 goto free_list; 748 749 file = PyFile_FromFile(fp, "perf", "r", NULL); 750 if (file == NULL) 751 goto free_list; 752 753 if (PyList_Append(list, file) != 0) { 754 Py_DECREF(file); 755 goto free_list; 756 } 757 758 Py_DECREF(file); 759 } 760 761 return list; 762 free_list: 763 return PyErr_NoMemory(); 764 } 765 766 767 static PyObject *pyrf_evlist__add(struct pyrf_evlist *pevlist, 768 PyObject *args, PyObject *kwargs __used) 769 { 770 struct perf_evlist *evlist = &pevlist->evlist; 771 PyObject *pevsel; 772 struct perf_evsel *evsel; 773 774 if (!PyArg_ParseTuple(args, "O", &pevsel)) 775 return NULL; 776 777 Py_INCREF(pevsel); 778 evsel = &((struct pyrf_evsel *)pevsel)->evsel; 779 evsel->idx = evlist->nr_entries; 780 perf_evlist__add(evlist, evsel); 781 782 return Py_BuildValue("i", evlist->nr_entries); 783 } 784 785 static PyObject *pyrf_evlist__read_on_cpu(struct pyrf_evlist *pevlist, 786 PyObject *args, PyObject *kwargs) 787 { 788 struct perf_evlist *evlist = &pevlist->evlist; 789 union perf_event *event; 790 int sample_id_all = 1, cpu; 791 static char *kwlist[] = { "cpu", "sample_id_all", NULL }; 792 int err; 793 794 if (!PyArg_ParseTupleAndKeywords(args, kwargs, "i|i", kwlist, 795 &cpu, &sample_id_all)) 796 return NULL; 797 798 event = perf_evlist__mmap_read(evlist, cpu); 799 if (event != NULL) { 800 struct perf_evsel *first; 801 PyObject *pyevent = pyrf_event__new(event); 802 struct pyrf_event *pevent = (struct pyrf_event *)pyevent; 803 804 if (pyevent == NULL) 805 return PyErr_NoMemory(); 806 807 first = list_entry(evlist->entries.next, struct perf_evsel, node); 808 err = perf_event__parse_sample(event, first->attr.sample_type, 809 perf_evsel__sample_size(first), 810 sample_id_all, &pevent->sample, false); 811 if (err) 812 return PyErr_Format(PyExc_OSError, 813 "perf: can't parse sample, err=%d", err); 814 return pyevent; 815 } 816 817 Py_INCREF(Py_None); 818 return Py_None; 819 } 820 821 static PyObject *pyrf_evlist__open(struct pyrf_evlist *pevlist, 822 PyObject *args, PyObject *kwargs) 823 { 824 struct perf_evlist *evlist = &pevlist->evlist; 825 int group = 0; 826 static char *kwlist[] = { "group", NULL }; 827 828 if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|OOii", kwlist, &group)) 829 return NULL; 830 831 if (perf_evlist__open(evlist, group) < 0) { 832 PyErr_SetFromErrno(PyExc_OSError); 833 return NULL; 834 } 835 836 Py_INCREF(Py_None); 837 return Py_None; 838 } 839 840 static PyMethodDef pyrf_evlist__methods[] = { 841 { 842 .ml_name = "mmap", 843 .ml_meth = (PyCFunction)pyrf_evlist__mmap, 844 .ml_flags = METH_VARARGS | METH_KEYWORDS, 845 .ml_doc = PyDoc_STR("mmap the file descriptor table.") 846 }, 847 { 848 .ml_name = "open", 849 .ml_meth = (PyCFunction)pyrf_evlist__open, 850 .ml_flags = METH_VARARGS | METH_KEYWORDS, 851 .ml_doc = PyDoc_STR("open the file descriptors.") 852 }, 853 { 854 .ml_name = "poll", 855 .ml_meth = (PyCFunction)pyrf_evlist__poll, 856 .ml_flags = METH_VARARGS | METH_KEYWORDS, 857 .ml_doc = PyDoc_STR("poll the file descriptor table.") 858 }, 859 { 860 .ml_name = "get_pollfd", 861 .ml_meth = (PyCFunction)pyrf_evlist__get_pollfd, 862 .ml_flags = METH_VARARGS | METH_KEYWORDS, 863 .ml_doc = PyDoc_STR("get the poll file descriptor table.") 864 }, 865 { 866 .ml_name = "add", 867 .ml_meth = (PyCFunction)pyrf_evlist__add, 868 .ml_flags = METH_VARARGS | METH_KEYWORDS, 869 .ml_doc = PyDoc_STR("adds an event selector to the list.") 870 }, 871 { 872 .ml_name = "read_on_cpu", 873 .ml_meth = (PyCFunction)pyrf_evlist__read_on_cpu, 874 .ml_flags = METH_VARARGS | METH_KEYWORDS, 875 .ml_doc = PyDoc_STR("reads an event.") 876 }, 877 { .ml_name = NULL, } 878 }; 879 880 static Py_ssize_t pyrf_evlist__length(PyObject *obj) 881 { 882 struct pyrf_evlist *pevlist = (void *)obj; 883 884 return pevlist->evlist.nr_entries; 885 } 886 887 static PyObject *pyrf_evlist__item(PyObject *obj, Py_ssize_t i) 888 { 889 struct pyrf_evlist *pevlist = (void *)obj; 890 struct perf_evsel *pos; 891 892 if (i >= pevlist->evlist.nr_entries) 893 return NULL; 894 895 list_for_each_entry(pos, &pevlist->evlist.entries, node) 896 if (i-- == 0) 897 break; 898 899 return Py_BuildValue("O", container_of(pos, struct pyrf_evsel, evsel)); 900 } 901 902 static PySequenceMethods pyrf_evlist__sequence_methods = { 903 .sq_length = pyrf_evlist__length, 904 .sq_item = pyrf_evlist__item, 905 }; 906 907 static char pyrf_evlist__doc[] = PyDoc_STR("perf event selector list object."); 908 909 static PyTypeObject pyrf_evlist__type = { 910 PyVarObject_HEAD_INIT(NULL, 0) 911 .tp_name = "perf.evlist", 912 .tp_basicsize = sizeof(struct pyrf_evlist), 913 .tp_dealloc = (destructor)pyrf_evlist__delete, 914 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE, 915 .tp_as_sequence = &pyrf_evlist__sequence_methods, 916 .tp_doc = pyrf_evlist__doc, 917 .tp_methods = pyrf_evlist__methods, 918 .tp_init = (initproc)pyrf_evlist__init, 919 }; 920 921 static int pyrf_evlist__setup_types(void) 922 { 923 pyrf_evlist__type.tp_new = PyType_GenericNew; 924 return PyType_Ready(&pyrf_evlist__type); 925 } 926 927 static struct { 928 const char *name; 929 int value; 930 } perf__constants[] = { 931 { "TYPE_HARDWARE", PERF_TYPE_HARDWARE }, 932 { "TYPE_SOFTWARE", PERF_TYPE_SOFTWARE }, 933 { "TYPE_TRACEPOINT", PERF_TYPE_TRACEPOINT }, 934 { "TYPE_HW_CACHE", PERF_TYPE_HW_CACHE }, 935 { "TYPE_RAW", PERF_TYPE_RAW }, 936 { "TYPE_BREAKPOINT", PERF_TYPE_BREAKPOINT }, 937 938 { "COUNT_HW_CPU_CYCLES", PERF_COUNT_HW_CPU_CYCLES }, 939 { "COUNT_HW_INSTRUCTIONS", PERF_COUNT_HW_INSTRUCTIONS }, 940 { "COUNT_HW_CACHE_REFERENCES", PERF_COUNT_HW_CACHE_REFERENCES }, 941 { "COUNT_HW_CACHE_MISSES", PERF_COUNT_HW_CACHE_MISSES }, 942 { "COUNT_HW_BRANCH_INSTRUCTIONS", PERF_COUNT_HW_BRANCH_INSTRUCTIONS }, 943 { "COUNT_HW_BRANCH_MISSES", PERF_COUNT_HW_BRANCH_MISSES }, 944 { "COUNT_HW_BUS_CYCLES", PERF_COUNT_HW_BUS_CYCLES }, 945 { "COUNT_HW_CACHE_L1D", PERF_COUNT_HW_CACHE_L1D }, 946 { "COUNT_HW_CACHE_L1I", PERF_COUNT_HW_CACHE_L1I }, 947 { "COUNT_HW_CACHE_LL", PERF_COUNT_HW_CACHE_LL }, 948 { "COUNT_HW_CACHE_DTLB", PERF_COUNT_HW_CACHE_DTLB }, 949 { "COUNT_HW_CACHE_ITLB", PERF_COUNT_HW_CACHE_ITLB }, 950 { "COUNT_HW_CACHE_BPU", PERF_COUNT_HW_CACHE_BPU }, 951 { "COUNT_HW_CACHE_OP_READ", PERF_COUNT_HW_CACHE_OP_READ }, 952 { "COUNT_HW_CACHE_OP_WRITE", PERF_COUNT_HW_CACHE_OP_WRITE }, 953 { "COUNT_HW_CACHE_OP_PREFETCH", PERF_COUNT_HW_CACHE_OP_PREFETCH }, 954 { "COUNT_HW_CACHE_RESULT_ACCESS", PERF_COUNT_HW_CACHE_RESULT_ACCESS }, 955 { "COUNT_HW_CACHE_RESULT_MISS", PERF_COUNT_HW_CACHE_RESULT_MISS }, 956 957 { "COUNT_HW_STALLED_CYCLES_FRONTEND", PERF_COUNT_HW_STALLED_CYCLES_FRONTEND }, 958 { "COUNT_HW_STALLED_CYCLES_BACKEND", PERF_COUNT_HW_STALLED_CYCLES_BACKEND }, 959 960 { "COUNT_SW_CPU_CLOCK", PERF_COUNT_SW_CPU_CLOCK }, 961 { "COUNT_SW_TASK_CLOCK", PERF_COUNT_SW_TASK_CLOCK }, 962 { "COUNT_SW_PAGE_FAULTS", PERF_COUNT_SW_PAGE_FAULTS }, 963 { "COUNT_SW_CONTEXT_SWITCHES", PERF_COUNT_SW_CONTEXT_SWITCHES }, 964 { "COUNT_SW_CPU_MIGRATIONS", PERF_COUNT_SW_CPU_MIGRATIONS }, 965 { "COUNT_SW_PAGE_FAULTS_MIN", PERF_COUNT_SW_PAGE_FAULTS_MIN }, 966 { "COUNT_SW_PAGE_FAULTS_MAJ", PERF_COUNT_SW_PAGE_FAULTS_MAJ }, 967 { "COUNT_SW_ALIGNMENT_FAULTS", PERF_COUNT_SW_ALIGNMENT_FAULTS }, 968 { "COUNT_SW_EMULATION_FAULTS", PERF_COUNT_SW_EMULATION_FAULTS }, 969 970 { "SAMPLE_IP", PERF_SAMPLE_IP }, 971 { "SAMPLE_TID", PERF_SAMPLE_TID }, 972 { "SAMPLE_TIME", PERF_SAMPLE_TIME }, 973 { "SAMPLE_ADDR", PERF_SAMPLE_ADDR }, 974 { "SAMPLE_READ", PERF_SAMPLE_READ }, 975 { "SAMPLE_CALLCHAIN", PERF_SAMPLE_CALLCHAIN }, 976 { "SAMPLE_ID", PERF_SAMPLE_ID }, 977 { "SAMPLE_CPU", PERF_SAMPLE_CPU }, 978 { "SAMPLE_PERIOD", PERF_SAMPLE_PERIOD }, 979 { "SAMPLE_STREAM_ID", PERF_SAMPLE_STREAM_ID }, 980 { "SAMPLE_RAW", PERF_SAMPLE_RAW }, 981 982 { "FORMAT_TOTAL_TIME_ENABLED", PERF_FORMAT_TOTAL_TIME_ENABLED }, 983 { "FORMAT_TOTAL_TIME_RUNNING", PERF_FORMAT_TOTAL_TIME_RUNNING }, 984 { "FORMAT_ID", PERF_FORMAT_ID }, 985 { "FORMAT_GROUP", PERF_FORMAT_GROUP }, 986 987 { "RECORD_MMAP", PERF_RECORD_MMAP }, 988 { "RECORD_LOST", PERF_RECORD_LOST }, 989 { "RECORD_COMM", PERF_RECORD_COMM }, 990 { "RECORD_EXIT", PERF_RECORD_EXIT }, 991 { "RECORD_THROTTLE", PERF_RECORD_THROTTLE }, 992 { "RECORD_UNTHROTTLE", PERF_RECORD_UNTHROTTLE }, 993 { "RECORD_FORK", PERF_RECORD_FORK }, 994 { "RECORD_READ", PERF_RECORD_READ }, 995 { "RECORD_SAMPLE", PERF_RECORD_SAMPLE }, 996 { .name = NULL, }, 997 }; 998 999 static PyMethodDef perf__methods[] = { 1000 { .ml_name = NULL, } 1001 }; 1002 1003 PyMODINIT_FUNC initperf(void) 1004 { 1005 PyObject *obj; 1006 int i; 1007 PyObject *dict, *module = Py_InitModule("perf", perf__methods); 1008 1009 if (module == NULL || 1010 pyrf_event__setup_types() < 0 || 1011 pyrf_evlist__setup_types() < 0 || 1012 pyrf_evsel__setup_types() < 0 || 1013 pyrf_thread_map__setup_types() < 0 || 1014 pyrf_cpu_map__setup_types() < 0) 1015 return; 1016 1017 Py_INCREF(&pyrf_evlist__type); 1018 PyModule_AddObject(module, "evlist", (PyObject*)&pyrf_evlist__type); 1019 1020 Py_INCREF(&pyrf_evsel__type); 1021 PyModule_AddObject(module, "evsel", (PyObject*)&pyrf_evsel__type); 1022 1023 Py_INCREF(&pyrf_thread_map__type); 1024 PyModule_AddObject(module, "thread_map", (PyObject*)&pyrf_thread_map__type); 1025 1026 Py_INCREF(&pyrf_cpu_map__type); 1027 PyModule_AddObject(module, "cpu_map", (PyObject*)&pyrf_cpu_map__type); 1028 1029 dict = PyModule_GetDict(module); 1030 if (dict == NULL) 1031 goto error; 1032 1033 for (i = 0; perf__constants[i].name != NULL; i++) { 1034 obj = PyInt_FromLong(perf__constants[i].value); 1035 if (obj == NULL) 1036 goto error; 1037 PyDict_SetItemString(dict, perf__constants[i].name, obj); 1038 Py_DECREF(obj); 1039 } 1040 1041 error: 1042 if (PyErr_Occurred()) 1043 PyErr_SetString(PyExc_ImportError, "perf: Init failed!"); 1044 } 1045