tools/perf/util/python.c

   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 }