tools/perf/util/python.c

   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 "evlist.h"
   8 #include "callchain.h"
   9 #include "evsel.h"
  10 #include "event.h"
  11 #include "cpumap.h"
  12 #include "print_binary.h"
  13 #include "thread_map.h"
  14
  15 #if PY_MAJOR_VERSION < 3
  16 #define _PyUnicode_FromString(arg) \
  17   PyString_FromString(arg)
  18 #define _PyUnicode_AsString(arg) \
  19   PyString_AsString(arg)
  20 #define _PyUnicode_FromFormat(...) \
  21   PyString_FromFormat(__VA_ARGS__)
  22 #define _PyLong_FromLong(arg) \
  23   PyInt_FromLong(arg)
  24
  25 #else
  26
  27 #define _PyUnicode_FromString(arg) \
  28   PyUnicode_FromString(arg)
  29 #define _PyUnicode_FromFormat(...) \
  30   PyUnicode_FromFormat(__VA_ARGS__)
  31 #define _PyLong_FromLong(arg) \
  32   PyLong_FromLong(arg)
  33 #endif
  34
  35 #ifndef Py_TYPE
  36 #define Py_TYPE(ob) (((PyObject*)(ob))->ob_type)
  37 #endif
  38
  39 /*
  40  * Provide these two so that we don't have to link against callchain.c and
  41  * start dragging hist.c, etc.
  42  */
  43 struct callchain_param callchain_param;
  44
  45 int parse_callchain_record(const char *arg __maybe_unused,
  46                            struct callchain_param *param __maybe_unused)
  47 {
  48         return 0;
  49 }
  50
  51 /*
  52  * Support debug printing even though util/debug.c is not linked.  That means
  53  * implementing 'verbose' and 'eprintf'.
  54  */
  55 int verbose;
  56
  57 int eprintf(int level, int var, const char *fmt, ...)
  58 {
  59         va_list args;
  60         int ret = 0;
  61
  62         if (var >= level) {
  63                 va_start(args, fmt);
  64                 ret = vfprintf(stderr, fmt, args);
  65                 va_end(args);
  66         }
  67
  68         return ret;
  69 }
  70
  71 /* Define PyVarObject_HEAD_INIT for python 2.5 */
  72 #ifndef PyVarObject_HEAD_INIT
  73 # define PyVarObject_HEAD_INIT(type, size) PyObject_HEAD_INIT(type) size,
  74 #endif
  75
  76 #if PY_MAJOR_VERSION < 3
  77 PyMODINIT_FUNC initperf(void);
  78 #else
  79 PyMODINIT_FUNC PyInit_perf(void);
  80 #endif
  81
  82 #define member_def(type, member, ptype, help) \
  83         { #member, ptype, \
  84           offsetof(struct pyrf_event, event) + offsetof(struct type, member), \
  85           0, help }
  86
  87 #define sample_member_def(name, member, ptype, help) \
  88         { #name, ptype, \
  89           offsetof(struct pyrf_event, sample) + offsetof(struct perf_sample, member), \
  90           0, help }
  91
  92 struct pyrf_event {
  93         PyObject_HEAD
  94         struct perf_evsel *evsel;
  95         struct perf_sample sample;
  96         union perf_event   event;
  97 };
  98
  99 #define sample_members \
 100         sample_member_def(sample_ip, ip, T_ULONGLONG, "event type"),                     \
 101         sample_member_def(sample_pid, pid, T_INT, "event pid"),                  \
 102         sample_member_def(sample_tid, tid, T_INT, "event tid"),                  \
 103         sample_member_def(sample_time, time, T_ULONGLONG, "event timestamp"),            \
 104         sample_member_def(sample_addr, addr, T_ULONGLONG, "event addr"),                 \
 105         sample_member_def(sample_id, id, T_ULONGLONG, "event id"),                       \
 106         sample_member_def(sample_stream_id, stream_id, T_ULONGLONG, "event stream id"), \
 107         sample_member_def(sample_period, period, T_ULONGLONG, "event period"),           \
 108         sample_member_def(sample_cpu, cpu, T_UINT, "event cpu"),
 109
 110 static char pyrf_mmap_event__doc[] = PyDoc_STR("perf mmap event object.");
 111
 112 static PyMemberDef pyrf_mmap_event__members[] = {
 113         sample_members
 114         member_def(perf_event_header, type, T_UINT, "event type"),
 115         member_def(perf_event_header, misc, T_UINT, "event misc"),
 116         member_def(mmap_event, pid, T_UINT, "event pid"),
 117         member_def(mmap_event, tid, T_UINT, "event tid"),
 118         member_def(mmap_event, start, T_ULONGLONG, "start of the map"),
 119         member_def(mmap_event, len, T_ULONGLONG, "map length"),
 120         member_def(mmap_event, pgoff, T_ULONGLONG, "page offset"),
 121         member_def(mmap_event, filename, T_STRING_INPLACE, "backing store"),
 122         { .name = NULL, },
 123 };
 124
 125 static PyObject *pyrf_mmap_event__repr(struct pyrf_event *pevent)
 126 {
 127         PyObject *ret;
 128         char *s;
 129
 130         if (asprintf(&s, "{ type: mmap, pid: %u, tid: %u, start: %#" PRIx64 ", "
 131                          "length: %#" PRIx64 ", offset: %#" PRIx64 ", "
 132                          "filename: %s }",
 133                      pevent->event.mmap.pid, pevent->event.mmap.tid,
 134                      pevent->event.mmap.start, pevent->event.mmap.len,
 135                      pevent->event.mmap.pgoff, pevent->event.mmap.filename) < 0) {
 136                 ret = PyErr_NoMemory();
 137         } else {
 138                 ret = _PyUnicode_FromString(s);
 139                 free(s);
 140         }
 141         return ret;
 142 }
 143
 144 static PyTypeObject pyrf_mmap_event__type = {
 145         PyVarObject_HEAD_INIT(NULL, 0)
 146         .tp_name        = "perf.mmap_event",
 147         .tp_basicsize   = sizeof(struct pyrf_event),
 148         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 149         .tp_doc         = pyrf_mmap_event__doc,
 150         .tp_members     = pyrf_mmap_event__members,
 151         .tp_repr        = (reprfunc)pyrf_mmap_event__repr,
 152 };
 153
 154 static char pyrf_task_event__doc[] = PyDoc_STR("perf task (fork/exit) event object.");
 155
 156 static PyMemberDef pyrf_task_event__members[] = {
 157         sample_members
 158         member_def(perf_event_header, type, T_UINT, "event type"),
 159         member_def(fork_event, pid, T_UINT, "event pid"),
 160         member_def(fork_event, ppid, T_UINT, "event ppid"),
 161         member_def(fork_event, tid, T_UINT, "event tid"),
 162         member_def(fork_event, ptid, T_UINT, "event ptid"),
 163         member_def(fork_event, time, T_ULONGLONG, "timestamp"),
 164         { .name = NULL, },
 165 };
 166
 167 static PyObject *pyrf_task_event__repr(struct pyrf_event *pevent)
 168 {
 169         return _PyUnicode_FromFormat("{ type: %s, pid: %u, ppid: %u, tid: %u, "
 170                                    "ptid: %u, time: %" PRIu64 "}",
 171                                    pevent->event.header.type == PERF_RECORD_FORK ? "fork" : "exit",
 172                                    pevent->event.fork.pid,
 173                                    pevent->event.fork.ppid,
 174                                    pevent->event.fork.tid,
 175                                    pevent->event.fork.ptid,
 176                                    pevent->event.fork.time);
 177 }
 178
 179 static PyTypeObject pyrf_task_event__type = {
 180         PyVarObject_HEAD_INIT(NULL, 0)
 181         .tp_name        = "perf.task_event",
 182         .tp_basicsize   = sizeof(struct pyrf_event),
 183         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 184         .tp_doc         = pyrf_task_event__doc,
 185         .tp_members     = pyrf_task_event__members,
 186         .tp_repr        = (reprfunc)pyrf_task_event__repr,
 187 };
 188
 189 static char pyrf_comm_event__doc[] = PyDoc_STR("perf comm event object.");
 190
 191 static PyMemberDef pyrf_comm_event__members[] = {
 192         sample_members
 193         member_def(perf_event_header, type, T_UINT, "event type"),
 194         member_def(comm_event, pid, T_UINT, "event pid"),
 195         member_def(comm_event, tid, T_UINT, "event tid"),
 196         member_def(comm_event, comm, T_STRING_INPLACE, "process name"),
 197         { .name = NULL, },
 198 };
 199
 200 static PyObject *pyrf_comm_event__repr(struct pyrf_event *pevent)
 201 {
 202         return _PyUnicode_FromFormat("{ type: comm, pid: %u, tid: %u, comm: %s }",
 203                                    pevent->event.comm.pid,
 204                                    pevent->event.comm.tid,
 205                                    pevent->event.comm.comm);
 206 }
 207
 208 static PyTypeObject pyrf_comm_event__type = {
 209         PyVarObject_HEAD_INIT(NULL, 0)
 210         .tp_name        = "perf.comm_event",
 211         .tp_basicsize   = sizeof(struct pyrf_event),
 212         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 213         .tp_doc         = pyrf_comm_event__doc,
 214         .tp_members     = pyrf_comm_event__members,
 215         .tp_repr        = (reprfunc)pyrf_comm_event__repr,
 216 };
 217
 218 static char pyrf_throttle_event__doc[] = PyDoc_STR("perf throttle event object.");
 219
 220 static PyMemberDef pyrf_throttle_event__members[] = {
 221         sample_members
 222         member_def(perf_event_header, type, T_UINT, "event type"),
 223         member_def(throttle_event, time, T_ULONGLONG, "timestamp"),
 224         member_def(throttle_event, id, T_ULONGLONG, "event id"),
 225         member_def(throttle_event, stream_id, T_ULONGLONG, "event stream id"),
 226         { .name = NULL, },
 227 };
 228
 229 static PyObject *pyrf_throttle_event__repr(struct pyrf_event *pevent)
 230 {
 231         struct throttle_event *te = (struct throttle_event *)(&pevent->event.header + 1);
 232
 233         return _PyUnicode_FromFormat("{ type: %sthrottle, time: %" PRIu64 ", id: %" PRIu64
 234                                    ", stream_id: %" PRIu64 " }",
 235                                    pevent->event.header.type == PERF_RECORD_THROTTLE ? "" : "un",
 236                                    te->time, te->id, te->stream_id);
 237 }
 238
 239 static PyTypeObject pyrf_throttle_event__type = {
 240         PyVarObject_HEAD_INIT(NULL, 0)
 241         .tp_name        = "perf.throttle_event",
 242         .tp_basicsize   = sizeof(struct pyrf_event),
 243         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 244         .tp_doc         = pyrf_throttle_event__doc,
 245         .tp_members     = pyrf_throttle_event__members,
 246         .tp_repr        = (reprfunc)pyrf_throttle_event__repr,
 247 };
 248
 249 static char pyrf_lost_event__doc[] = PyDoc_STR("perf lost event object.");
 250
 251 static PyMemberDef pyrf_lost_event__members[] = {
 252         sample_members
 253         member_def(lost_event, id, T_ULONGLONG, "event id"),
 254         member_def(lost_event, lost, T_ULONGLONG, "number of lost events"),
 255         { .name = NULL, },
 256 };
 257
 258 static PyObject *pyrf_lost_event__repr(struct pyrf_event *pevent)
 259 {
 260         PyObject *ret;
 261         char *s;
 262
 263         if (asprintf(&s, "{ type: lost, id: %#" PRIx64 ", "
 264                          "lost: %#" PRIx64 " }",
 265                      pevent->event.lost.id, pevent->event.lost.lost) < 0) {
 266                 ret = PyErr_NoMemory();
 267         } else {
 268                 ret = _PyUnicode_FromString(s);
 269                 free(s);
 270         }
 271         return ret;
 272 }
 273
 274 static PyTypeObject pyrf_lost_event__type = {
 275         PyVarObject_HEAD_INIT(NULL, 0)
 276         .tp_name        = "perf.lost_event",
 277         .tp_basicsize   = sizeof(struct pyrf_event),
 278         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 279         .tp_doc         = pyrf_lost_event__doc,
 280         .tp_members     = pyrf_lost_event__members,
 281         .tp_repr        = (reprfunc)pyrf_lost_event__repr,
 282 };
 283
 284 static char pyrf_read_event__doc[] = PyDoc_STR("perf read event object.");
 285
 286 static PyMemberDef pyrf_read_event__members[] = {
 287         sample_members
 288         member_def(read_event, pid, T_UINT, "event pid"),
 289         member_def(read_event, tid, T_UINT, "event tid"),
 290         { .name = NULL, },
 291 };
 292
 293 static PyObject *pyrf_read_event__repr(struct pyrf_event *pevent)
 294 {
 295         return _PyUnicode_FromFormat("{ type: read, pid: %u, tid: %u }",
 296                                    pevent->event.read.pid,
 297                                    pevent->event.read.tid);
 298         /*
 299          * FIXME: return the array of read values,
 300          * making this method useful ;-)
 301          */
 302 }
 303
 304 static PyTypeObject pyrf_read_event__type = {
 305         PyVarObject_HEAD_INIT(NULL, 0)
 306         .tp_name        = "perf.read_event",
 307         .tp_basicsize   = sizeof(struct pyrf_event),
 308         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 309         .tp_doc         = pyrf_read_event__doc,
 310         .tp_members     = pyrf_read_event__members,
 311         .tp_repr        = (reprfunc)pyrf_read_event__repr,
 312 };
 313
 314 static char pyrf_sample_event__doc[] = PyDoc_STR("perf sample event object.");
 315
 316 static PyMemberDef pyrf_sample_event__members[] = {
 317         sample_members
 318         member_def(perf_event_header, type, T_UINT, "event type"),
 319         { .name = NULL, },
 320 };
 321
 322 static PyObject *pyrf_sample_event__repr(struct pyrf_event *pevent)
 323 {
 324         PyObject *ret;
 325         char *s;
 326
 327         if (asprintf(&s, "{ type: sample }") < 0) {
 328                 ret = PyErr_NoMemory();
 329         } else {
 330                 ret = _PyUnicode_FromString(s);
 331                 free(s);
 332         }
 333         return ret;
 334 }
 335
 336 static bool is_tracepoint(struct pyrf_event *pevent)
 337 {
 338         return pevent->evsel->attr.type == PERF_TYPE_TRACEPOINT;
 339 }
 340
 341 static PyObject*
 342 tracepoint_field(struct pyrf_event *pe, struct format_field *field)
 343 {
 344         struct tep_handle *pevent = field->event->pevent;
 345         void *data = pe->sample.raw_data;
 346         PyObject *ret = NULL;
 347         unsigned long long val;
 348         unsigned int offset, len;
 349
 350         if (field->flags & FIELD_IS_ARRAY) {
 351                 offset = field->offset;
 352                 len    = field->size;
 353                 if (field->flags & FIELD_IS_DYNAMIC) {
 354                         val     = pevent_read_number(pevent, data + offset, len);
 355                         offset  = val;
 356                         len     = offset >> 16;
 357                         offset &= 0xffff;
 358                 }
 359                 if (field->flags & FIELD_IS_STRING &&
 360                     is_printable_array(data + offset, len)) {
 361                         ret = _PyUnicode_FromString((char *)data + offset);
 362                 } else {
 363                         ret = PyByteArray_FromStringAndSize((const char *) data + offset, len);
 364                         field->flags &= ~FIELD_IS_STRING;
 365                 }
 366         } else {
 367                 val = pevent_read_number(pevent, data + field->offset,
 368                                          field->size);
 369                 if (field->flags & FIELD_IS_POINTER)
 370                         ret = PyLong_FromUnsignedLong((unsigned long) val);
 371                 else if (field->flags & FIELD_IS_SIGNED)
 372                         ret = PyLong_FromLong((long) val);
 373                 else
 374                         ret = PyLong_FromUnsignedLong((unsigned long) val);
 375         }
 376
 377         return ret;
 378 }
 379
 380 static PyObject*
 381 get_tracepoint_field(struct pyrf_event *pevent, PyObject *attr_name)
 382 {
 383         const char *str = _PyUnicode_AsString(PyObject_Str(attr_name));
 384         struct perf_evsel *evsel = pevent->evsel;
 385         struct format_field *field;
 386
 387         if (!evsel->tp_format) {
 388                 struct event_format *tp_format;
 389
 390                 tp_format = trace_event__tp_format_id(evsel->attr.config);
 391                 if (!tp_format)
 392                         return NULL;
 393
 394                 evsel->tp_format = tp_format;
 395         }
 396
 397         field = pevent_find_any_field(evsel->tp_format, str);
 398         if (!field)
 399                 return NULL;
 400
 401         return tracepoint_field(pevent, field);
 402 }
 403
 404 static PyObject*
 405 pyrf_sample_event__getattro(struct pyrf_event *pevent, PyObject *attr_name)
 406 {
 407         PyObject *obj = NULL;
 408
 409         if (is_tracepoint(pevent))
 410                 obj = get_tracepoint_field(pevent, attr_name);
 411
 412         return obj ?: PyObject_GenericGetAttr((PyObject *) pevent, attr_name);
 413 }
 414
 415 static PyTypeObject pyrf_sample_event__type = {
 416         PyVarObject_HEAD_INIT(NULL, 0)
 417         .tp_name        = "perf.sample_event",
 418         .tp_basicsize   = sizeof(struct pyrf_event),
 419         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 420         .tp_doc         = pyrf_sample_event__doc,
 421         .tp_members     = pyrf_sample_event__members,
 422         .tp_repr        = (reprfunc)pyrf_sample_event__repr,
 423         .tp_getattro    = (getattrofunc) pyrf_sample_event__getattro,
 424 };
 425
 426 static char pyrf_context_switch_event__doc[] = PyDoc_STR("perf context_switch event object.");
 427
 428 static PyMemberDef pyrf_context_switch_event__members[] = {
 429         sample_members
 430         member_def(perf_event_header, type, T_UINT, "event type"),
 431         member_def(context_switch_event, next_prev_pid, T_UINT, "next/prev pid"),
 432         member_def(context_switch_event, next_prev_tid, T_UINT, "next/prev tid"),
 433         { .name = NULL, },
 434 };
 435
 436 static PyObject *pyrf_context_switch_event__repr(struct pyrf_event *pevent)
 437 {
 438         PyObject *ret;
 439         char *s;
 440
 441         if (asprintf(&s, "{ type: context_switch, next_prev_pid: %u, next_prev_tid: %u, switch_out: %u }",
 442                      pevent->event.context_switch.next_prev_pid,
 443                      pevent->event.context_switch.next_prev_tid,
 444                      !!(pevent->event.header.misc & PERF_RECORD_MISC_SWITCH_OUT)) < 0) {
 445                 ret = PyErr_NoMemory();
 446         } else {
 447                 ret = _PyUnicode_FromString(s);
 448                 free(s);
 449         }
 450         return ret;
 451 }
 452
 453 static PyTypeObject pyrf_context_switch_event__type = {
 454         PyVarObject_HEAD_INIT(NULL, 0)
 455         .tp_name        = "perf.context_switch_event",
 456         .tp_basicsize   = sizeof(struct pyrf_event),
 457         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 458         .tp_doc         = pyrf_context_switch_event__doc,
 459         .tp_members     = pyrf_context_switch_event__members,
 460         .tp_repr        = (reprfunc)pyrf_context_switch_event__repr,
 461 };
 462
 463 static int pyrf_event__setup_types(void)
 464 {
 465         int err;
 466         pyrf_mmap_event__type.tp_new =
 467         pyrf_task_event__type.tp_new =
 468         pyrf_comm_event__type.tp_new =
 469         pyrf_lost_event__type.tp_new =
 470         pyrf_read_event__type.tp_new =
 471         pyrf_sample_event__type.tp_new =
 472         pyrf_context_switch_event__type.tp_new =
 473         pyrf_throttle_event__type.tp_new = PyType_GenericNew;
 474         err = PyType_Ready(&pyrf_mmap_event__type);
 475         if (err < 0)
 476                 goto out;
 477         err = PyType_Ready(&pyrf_lost_event__type);
 478         if (err < 0)
 479                 goto out;
 480         err = PyType_Ready(&pyrf_task_event__type);
 481         if (err < 0)
 482                 goto out;
 483         err = PyType_Ready(&pyrf_comm_event__type);
 484         if (err < 0)
 485                 goto out;
 486         err = PyType_Ready(&pyrf_throttle_event__type);
 487         if (err < 0)
 488                 goto out;
 489         err = PyType_Ready(&pyrf_read_event__type);
 490         if (err < 0)
 491                 goto out;
 492         err = PyType_Ready(&pyrf_sample_event__type);
 493         if (err < 0)
 494                 goto out;
 495         err = PyType_Ready(&pyrf_context_switch_event__type);
 496         if (err < 0)
 497                 goto out;
 498 out:
 499         return err;
 500 }
 501
 502 static PyTypeObject *pyrf_event__type[] = {
 503         [PERF_RECORD_MMAP]       = &pyrf_mmap_event__type,
 504         [PERF_RECORD_LOST]       = &pyrf_lost_event__type,
 505         [PERF_RECORD_COMM]       = &pyrf_comm_event__type,
 506         [PERF_RECORD_EXIT]       = &pyrf_task_event__type,
 507         [PERF_RECORD_THROTTLE]   = &pyrf_throttle_event__type,
 508         [PERF_RECORD_UNTHROTTLE] = &pyrf_throttle_event__type,
 509         [PERF_RECORD_FORK]       = &pyrf_task_event__type,
 510         [PERF_RECORD_READ]       = &pyrf_read_event__type,
 511         [PERF_RECORD_SAMPLE]     = &pyrf_sample_event__type,
 512         [PERF_RECORD_SWITCH]     = &pyrf_context_switch_event__type,
 513         [PERF_RECORD_SWITCH_CPU_WIDE]  = &pyrf_context_switch_event__type,
 514 };
 515
 516 static PyObject *pyrf_event__new(union perf_event *event)
 517 {
 518         struct pyrf_event *pevent;
 519         PyTypeObject *ptype;
 520
 521         if ((event->header.type < PERF_RECORD_MMAP ||
 522              event->header.type > PERF_RECORD_SAMPLE) &&
 523             !(event->header.type == PERF_RECORD_SWITCH ||
 524               event->header.type == PERF_RECORD_SWITCH_CPU_WIDE))
 525                 return NULL;
 526
 527         ptype = pyrf_event__type[event->header.type];
 528         pevent = PyObject_New(struct pyrf_event, ptype);
 529         if (pevent != NULL)
 530                 memcpy(&pevent->event, event, event->header.size);
 531         return (PyObject *)pevent;
 532 }
 533
 534 struct pyrf_cpu_map {
 535         PyObject_HEAD
 536
 537         struct cpu_map *cpus;
 538 };
 539
 540 static int pyrf_cpu_map__init(struct pyrf_cpu_map *pcpus,
 541                               PyObject *args, PyObject *kwargs)
 542 {
 543         static char *kwlist[] = { "cpustr", NULL };
 544         char *cpustr = NULL;
 545
 546         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|s",
 547                                          kwlist, &cpustr))
 548                 return -1;
 549
 550         pcpus->cpus = cpu_map__new(cpustr);
 551         if (pcpus->cpus == NULL)
 552                 return -1;
 553         return 0;
 554 }
 555
 556 static void pyrf_cpu_map__delete(struct pyrf_cpu_map *pcpus)
 557 {
 558         cpu_map__put(pcpus->cpus);
 559         Py_TYPE(pcpus)->tp_free((PyObject*)pcpus);
 560 }
 561
 562 static Py_ssize_t pyrf_cpu_map__length(PyObject *obj)
 563 {
 564         struct pyrf_cpu_map *pcpus = (void *)obj;
 565
 566         return pcpus->cpus->nr;
 567 }
 568
 569 static PyObject *pyrf_cpu_map__item(PyObject *obj, Py_ssize_t i)
 570 {
 571         struct pyrf_cpu_map *pcpus = (void *)obj;
 572
 573         if (i >= pcpus->cpus->nr)
 574                 return NULL;
 575
 576         return Py_BuildValue("i", pcpus->cpus->map[i]);
 577 }
 578
 579 static PySequenceMethods pyrf_cpu_map__sequence_methods = {
 580         .sq_length = pyrf_cpu_map__length,
 581         .sq_item   = pyrf_cpu_map__item,
 582 };
 583
 584 static char pyrf_cpu_map__doc[] = PyDoc_STR("cpu map object.");
 585
 586 static PyTypeObject pyrf_cpu_map__type = {
 587         PyVarObject_HEAD_INIT(NULL, 0)
 588         .tp_name        = "perf.cpu_map",
 589         .tp_basicsize   = sizeof(struct pyrf_cpu_map),
 590         .tp_dealloc     = (destructor)pyrf_cpu_map__delete,
 591         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 592         .tp_doc         = pyrf_cpu_map__doc,
 593         .tp_as_sequence = &pyrf_cpu_map__sequence_methods,
 594         .tp_init        = (initproc)pyrf_cpu_map__init,
 595 };
 596
 597 static int pyrf_cpu_map__setup_types(void)
 598 {
 599         pyrf_cpu_map__type.tp_new = PyType_GenericNew;
 600         return PyType_Ready(&pyrf_cpu_map__type);
 601 }
 602
 603 struct pyrf_thread_map {
 604         PyObject_HEAD
 605
 606         struct thread_map *threads;
 607 };
 608
 609 static int pyrf_thread_map__init(struct pyrf_thread_map *pthreads,
 610                                  PyObject *args, PyObject *kwargs)
 611 {
 612         static char *kwlist[] = { "pid", "tid", "uid", NULL };
 613         int pid = -1, tid = -1, uid = UINT_MAX;
 614
 615         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|iii",
 616                                          kwlist, &pid, &tid, &uid))
 617                 return -1;
 618
 619         pthreads->threads = thread_map__new(pid, tid, uid);
 620         if (pthreads->threads == NULL)
 621                 return -1;
 622         return 0;
 623 }
 624
 625 static void pyrf_thread_map__delete(struct pyrf_thread_map *pthreads)
 626 {
 627         thread_map__put(pthreads->threads);
 628         Py_TYPE(pthreads)->tp_free((PyObject*)pthreads);
 629 }
 630
 631 static Py_ssize_t pyrf_thread_map__length(PyObject *obj)
 632 {
 633         struct pyrf_thread_map *pthreads = (void *)obj;
 634
 635         return pthreads->threads->nr;
 636 }
 637
 638 static PyObject *pyrf_thread_map__item(PyObject *obj, Py_ssize_t i)
 639 {
 640         struct pyrf_thread_map *pthreads = (void *)obj;
 641
 642         if (i >= pthreads->threads->nr)
 643                 return NULL;
 644
 645         return Py_BuildValue("i", pthreads->threads->map[i]);
 646 }
 647
 648 static PySequenceMethods pyrf_thread_map__sequence_methods = {
 649         .sq_length = pyrf_thread_map__length,
 650         .sq_item   = pyrf_thread_map__item,
 651 };
 652
 653 static char pyrf_thread_map__doc[] = PyDoc_STR("thread map object.");
 654
 655 static PyTypeObject pyrf_thread_map__type = {
 656         PyVarObject_HEAD_INIT(NULL, 0)
 657         .tp_name        = "perf.thread_map",
 658         .tp_basicsize   = sizeof(struct pyrf_thread_map),
 659         .tp_dealloc     = (destructor)pyrf_thread_map__delete,
 660         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 661         .tp_doc         = pyrf_thread_map__doc,
 662         .tp_as_sequence = &pyrf_thread_map__sequence_methods,
 663         .tp_init        = (initproc)pyrf_thread_map__init,
 664 };
 665
 666 static int pyrf_thread_map__setup_types(void)
 667 {
 668         pyrf_thread_map__type.tp_new = PyType_GenericNew;
 669         return PyType_Ready(&pyrf_thread_map__type);
 670 }
 671
 672 struct pyrf_evsel {
 673         PyObject_HEAD
 674
 675         struct perf_evsel evsel;
 676 };
 677
 678 static int pyrf_evsel__init(struct pyrf_evsel *pevsel,
 679                             PyObject *args, PyObject *kwargs)
 680 {
 681         struct perf_event_attr attr = {
 682                 .type = PERF_TYPE_HARDWARE,
 683                 .config = PERF_COUNT_HW_CPU_CYCLES,
 684                 .sample_type = PERF_SAMPLE_PERIOD | PERF_SAMPLE_TID,
 685         };
 686         static char *kwlist[] = {
 687                 "type",
 688                 "config",
 689                 "sample_freq",
 690                 "sample_period",
 691                 "sample_type",
 692                 "read_format",
 693                 "disabled",
 694                 "inherit",
 695                 "pinned",
 696                 "exclusive",
 697                 "exclude_user",
 698                 "exclude_kernel",
 699                 "exclude_hv",
 700                 "exclude_idle",
 701                 "mmap",
 702                 "context_switch",
 703                 "comm",
 704                 "freq",
 705                 "inherit_stat",
 706                 "enable_on_exec",
 707                 "task",
 708                 "watermark",
 709                 "precise_ip",
 710                 "mmap_data",
 711                 "sample_id_all",
 712                 "wakeup_events",
 713                 "bp_type",
 714                 "bp_addr",
 715                 "bp_len",
 716                  NULL
 717         };
 718         u64 sample_period = 0;
 719         u32 disabled = 0,
 720             inherit = 0,
 721             pinned = 0,
 722             exclusive = 0,
 723             exclude_user = 0,
 724             exclude_kernel = 0,
 725             exclude_hv = 0,
 726             exclude_idle = 0,
 727             mmap = 0,
 728             context_switch = 0,
 729             comm = 0,
 730             freq = 1,
 731             inherit_stat = 0,
 732             enable_on_exec = 0,
 733             task = 0,
 734             watermark = 0,
 735             precise_ip = 0,
 736             mmap_data = 0,
 737             sample_id_all = 1;
 738         int idx = 0;
 739
 740         if (!PyArg_ParseTupleAndKeywords(args, kwargs,
 741                                          "|iKiKKiiiiiiiiiiiiiiiiiiiiiiKK", kwlist,
 742                                          &attr.type, &attr.config, &attr.sample_freq,
 743                                          &sample_period, &attr.sample_type,
 744                                          &attr.read_format, &disabled, &inherit,
 745                                          &pinned, &exclusive, &exclude_user,
 746                                          &exclude_kernel, &exclude_hv, &exclude_idle,
 747                                          &mmap, &context_switch, &comm, &freq, &inherit_stat,
 748                                          &enable_on_exec, &task, &watermark,
 749                                          &precise_ip, &mmap_data, &sample_id_all,
 750                                          &attr.wakeup_events, &attr.bp_type,
 751                                          &attr.bp_addr, &attr.bp_len, &idx))
 752                 return -1;
 753
 754         /* union... */
 755         if (sample_period != 0) {
 756                 if (attr.sample_freq != 0)
 757                         return -1; /* FIXME: throw right exception */
 758                 attr.sample_period = sample_period;
 759         }
 760
 761         /* Bitfields */
 762         attr.disabled       = disabled;
 763         attr.inherit        = inherit;
 764         attr.pinned         = pinned;
 765         attr.exclusive      = exclusive;
 766         attr.exclude_user   = exclude_user;
 767         attr.exclude_kernel = exclude_kernel;
 768         attr.exclude_hv     = exclude_hv;
 769         attr.exclude_idle   = exclude_idle;
 770         attr.mmap           = mmap;
 771         attr.context_switch = context_switch;
 772         attr.comm           = comm;
 773         attr.freq           = freq;
 774         attr.inherit_stat   = inherit_stat;
 775         attr.enable_on_exec = enable_on_exec;
 776         attr.task           = task;
 777         attr.watermark      = watermark;
 778         attr.precise_ip     = precise_ip;
 779         attr.mmap_data      = mmap_data;
 780         attr.sample_id_all  = sample_id_all;
 781         attr.size           = sizeof(attr);
 782
 783         perf_evsel__init(&pevsel->evsel, &attr, idx);
 784         return 0;
 785 }
 786
 787 static void pyrf_evsel__delete(struct pyrf_evsel *pevsel)
 788 {
 789         perf_evsel__exit(&pevsel->evsel);
 790         Py_TYPE(pevsel)->tp_free((PyObject*)pevsel);
 791 }
 792
 793 static PyObject *pyrf_evsel__open(struct pyrf_evsel *pevsel,
 794                                   PyObject *args, PyObject *kwargs)
 795 {
 796         struct perf_evsel *evsel = &pevsel->evsel;
 797         struct cpu_map *cpus = NULL;
 798         struct thread_map *threads = NULL;
 799         PyObject *pcpus = NULL, *pthreads = NULL;
 800         int group = 0, inherit = 0;
 801         static char *kwlist[] = { "cpus", "threads", "group", "inherit", NULL };
 802
 803         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|OOii", kwlist,
 804                                          &pcpus, &pthreads, &group, &inherit))
 805                 return NULL;
 806
 807         if (pthreads != NULL)
 808                 threads = ((struct pyrf_thread_map *)pthreads)->threads;
 809
 810         if (pcpus != NULL)
 811                 cpus = ((struct pyrf_cpu_map *)pcpus)->cpus;
 812
 813         evsel->attr.inherit = inherit;
 814         /*
 815          * This will group just the fds for this single evsel, to group
 816          * multiple events, use evlist.open().
 817          */
 818         if (perf_evsel__open(evsel, cpus, threads) < 0) {
 819                 PyErr_SetFromErrno(PyExc_OSError);
 820                 return NULL;
 821         }
 822
 823         Py_INCREF(Py_None);
 824         return Py_None;
 825 }
 826
 827 static PyMethodDef pyrf_evsel__methods[] = {
 828         {
 829                 .ml_name  = "open",
 830                 .ml_meth  = (PyCFunction)pyrf_evsel__open,
 831                 .ml_flags = METH_VARARGS | METH_KEYWORDS,
 832                 .ml_doc   = PyDoc_STR("open the event selector file descriptor table.")
 833         },
 834         { .ml_name = NULL, }
 835 };
 836
 837 static char pyrf_evsel__doc[] = PyDoc_STR("perf event selector list object.");
 838
 839 static PyTypeObject pyrf_evsel__type = {
 840         PyVarObject_HEAD_INIT(NULL, 0)
 841         .tp_name        = "perf.evsel",
 842         .tp_basicsize   = sizeof(struct pyrf_evsel),
 843         .tp_dealloc     = (destructor)pyrf_evsel__delete,
 844         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 845         .tp_doc         = pyrf_evsel__doc,
 846         .tp_methods     = pyrf_evsel__methods,
 847         .tp_init        = (initproc)pyrf_evsel__init,
 848 };
 849
 850 static int pyrf_evsel__setup_types(void)
 851 {
 852         pyrf_evsel__type.tp_new = PyType_GenericNew;
 853         return PyType_Ready(&pyrf_evsel__type);
 854 }
 855
 856 struct pyrf_evlist {
 857         PyObject_HEAD
 858
 859         struct perf_evlist evlist;
 860 };
 861
 862 static int pyrf_evlist__init(struct pyrf_evlist *pevlist,
 863                              PyObject *args, PyObject *kwargs __maybe_unused)
 864 {
 865         PyObject *pcpus = NULL, *pthreads = NULL;
 866         struct cpu_map *cpus;
 867         struct thread_map *threads;
 868
 869         if (!PyArg_ParseTuple(args, "OO", &pcpus, &pthreads))
 870                 return -1;
 871
 872         threads = ((struct pyrf_thread_map *)pthreads)->threads;
 873         cpus = ((struct pyrf_cpu_map *)pcpus)->cpus;
 874         perf_evlist__init(&pevlist->evlist, cpus, threads);
 875         return 0;
 876 }
 877
 878 static void pyrf_evlist__delete(struct pyrf_evlist *pevlist)
 879 {
 880         perf_evlist__exit(&pevlist->evlist);
 881         Py_TYPE(pevlist)->tp_free((PyObject*)pevlist);
 882 }
 883
 884 static PyObject *pyrf_evlist__mmap(struct pyrf_evlist *pevlist,
 885                                    PyObject *args, PyObject *kwargs)
 886 {
 887         struct perf_evlist *evlist = &pevlist->evlist;
 888         static char *kwlist[] = { "pages", "overwrite", NULL };
 889         int pages = 128, overwrite = false;
 890
 891         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|ii", kwlist,
 892                                          &pages, &overwrite))
 893                 return NULL;
 894
 895         if (perf_evlist__mmap(evlist, pages) < 0) {
 896                 PyErr_SetFromErrno(PyExc_OSError);
 897                 return NULL;
 898         }
 899
 900         Py_INCREF(Py_None);
 901         return Py_None;
 902 }
 903
 904 static PyObject *pyrf_evlist__poll(struct pyrf_evlist *pevlist,
 905                                    PyObject *args, PyObject *kwargs)
 906 {
 907         struct perf_evlist *evlist = &pevlist->evlist;
 908         static char *kwlist[] = { "timeout", NULL };
 909         int timeout = -1, n;
 910
 911         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|i", kwlist, &timeout))
 912                 return NULL;
 913
 914         n = perf_evlist__poll(evlist, timeout);
 915         if (n < 0) {
 916                 PyErr_SetFromErrno(PyExc_OSError);
 917                 return NULL;
 918         }
 919
 920         return Py_BuildValue("i", n);
 921 }
 922
 923 static PyObject *pyrf_evlist__get_pollfd(struct pyrf_evlist *pevlist,
 924                                          PyObject *args __maybe_unused,
 925                                          PyObject *kwargs __maybe_unused)
 926 {
 927         struct perf_evlist *evlist = &pevlist->evlist;
 928         PyObject *list = PyList_New(0);
 929         int i;
 930
 931         for (i = 0; i < evlist->pollfd.nr; ++i) {
 932                 PyObject *file;
 933 #if PY_MAJOR_VERSION < 3
 934                 FILE *fp = fdopen(evlist->pollfd.entries[i].fd, "r");
 935
 936                 if (fp == NULL)
 937                         goto free_list;
 938
 939                 file = PyFile_FromFile(fp, "perf", "r", NULL);
 940 #else
 941                 file = PyFile_FromFd(evlist->pollfd.entries[i].fd, "perf", "r", -1, NULL, NULL, NULL, 1);
 942 #endif
 943                 if (file == NULL)
 944                         goto free_list;
 945
 946                 if (PyList_Append(list, file) != 0) {
 947                         Py_DECREF(file);
 948                         goto free_list;
 949                 }
 950
 951                 Py_DECREF(file);
 952         }
 953
 954         return list;
 955 free_list:
 956         return PyErr_NoMemory();
 957 }
 958
 959
 960 static PyObject *pyrf_evlist__add(struct pyrf_evlist *pevlist,
 961                                   PyObject *args,
 962                                   PyObject *kwargs __maybe_unused)
 963 {
 964         struct perf_evlist *evlist = &pevlist->evlist;
 965         PyObject *pevsel;
 966         struct perf_evsel *evsel;
 967
 968         if (!PyArg_ParseTuple(args, "O", &pevsel))
 969                 return NULL;
 970
 971         Py_INCREF(pevsel);
 972         evsel = &((struct pyrf_evsel *)pevsel)->evsel;
 973         evsel->idx = evlist->nr_entries;
 974         perf_evlist__add(evlist, evsel);
 975
 976         return Py_BuildValue("i", evlist->nr_entries);
 977 }
 978
 979 static PyObject *pyrf_evlist__read_on_cpu(struct pyrf_evlist *pevlist,
 980                                           PyObject *args, PyObject *kwargs)
 981 {
 982         struct perf_evlist *evlist = &pevlist->evlist;
 983         union perf_event *event;
 984         int sample_id_all = 1, cpu;
 985         static char *kwlist[] = { "cpu", "sample_id_all", NULL };
 986         struct perf_mmap *md;
 987         int err;
 988
 989         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "i|i", kwlist,
 990                                          &cpu, &sample_id_all))
 991                 return NULL;
 992
 993         md = &evlist->mmap[cpu];
 994         if (perf_mmap__read_init(md) < 0)
 995                 goto end;
 996
 997         event = perf_mmap__read_event(md);
 998         if (event != NULL) {
 999                 PyObject *pyevent = pyrf_event__new(event);
1000                 struct pyrf_event *pevent = (struct pyrf_event *)pyevent;
1001                 struct perf_evsel *evsel;
1002
1003                 if (pyevent == NULL)
1004                         return PyErr_NoMemory();
1005
1006                 evsel = perf_evlist__event2evsel(evlist, event);
1007                 if (!evsel) {
1008                         Py_INCREF(Py_None);
1009                         return Py_None;
1010                 }
1011
1012                 pevent->evsel = evsel;
1013
1014                 err = perf_evsel__parse_sample(evsel, event, &pevent->sample);
1015
1016                 /* Consume the even only after we parsed it out. */
1017                 perf_mmap__consume(md);
1018
1019                 if (err)
1020                         return PyErr_Format(PyExc_OSError,
1021                                             "perf: can't parse sample, err=%d", err);
1022                 return pyevent;
1023         }
1024 end:
1025         Py_INCREF(Py_None);
1026         return Py_None;
1027 }
1028
1029 static PyObject *pyrf_evlist__open(struct pyrf_evlist *pevlist,
1030                                    PyObject *args, PyObject *kwargs)
1031 {
1032         struct perf_evlist *evlist = &pevlist->evlist;
1033         int group = 0;
1034         static char *kwlist[] = { "group", NULL };
1035
1036         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|OOii", kwlist, &group))
1037                 return NULL;
1038
1039         if (group)
1040                 perf_evlist__set_leader(evlist);
1041
1042         if (perf_evlist__open(evlist) < 0) {
1043                 PyErr_SetFromErrno(PyExc_OSError);
1044                 return NULL;
1045         }
1046
1047         Py_INCREF(Py_None);
1048         return Py_None;
1049 }
1050
1051 static PyMethodDef pyrf_evlist__methods[] = {
1052         {
1053                 .ml_name  = "mmap",
1054                 .ml_meth  = (PyCFunction)pyrf_evlist__mmap,
1055                 .ml_flags = METH_VARARGS | METH_KEYWORDS,
1056                 .ml_doc   = PyDoc_STR("mmap the file descriptor table.")
1057         },
1058         {
1059                 .ml_name  = "open",
1060                 .ml_meth  = (PyCFunction)pyrf_evlist__open,
1061                 .ml_flags = METH_VARARGS | METH_KEYWORDS,
1062                 .ml_doc   = PyDoc_STR("open the file descriptors.")
1063         },
1064         {
1065                 .ml_name  = "poll",
1066                 .ml_meth  = (PyCFunction)pyrf_evlist__poll,
1067                 .ml_flags = METH_VARARGS | METH_KEYWORDS,
1068                 .ml_doc   = PyDoc_STR("poll the file descriptor table.")
1069         },
1070         {
1071                 .ml_name  = "get_pollfd",
1072                 .ml_meth  = (PyCFunction)pyrf_evlist__get_pollfd,
1073                 .ml_flags = METH_VARARGS | METH_KEYWORDS,
1074                 .ml_doc   = PyDoc_STR("get the poll file descriptor table.")
1075         },
1076         {
1077                 .ml_name  = "add",
1078                 .ml_meth  = (PyCFunction)pyrf_evlist__add,
1079                 .ml_flags = METH_VARARGS | METH_KEYWORDS,
1080                 .ml_doc   = PyDoc_STR("adds an event selector to the list.")
1081         },
1082         {
1083                 .ml_name  = "read_on_cpu",
1084                 .ml_meth  = (PyCFunction)pyrf_evlist__read_on_cpu,
1085                 .ml_flags = METH_VARARGS | METH_KEYWORDS,
1086                 .ml_doc   = PyDoc_STR("reads an event.")
1087         },
1088         { .ml_name = NULL, }
1089 };
1090
1091 static Py_ssize_t pyrf_evlist__length(PyObject *obj)
1092 {
1093         struct pyrf_evlist *pevlist = (void *)obj;
1094
1095         return pevlist->evlist.nr_entries;
1096 }
1097
1098 static PyObject *pyrf_evlist__item(PyObject *obj, Py_ssize_t i)
1099 {
1100         struct pyrf_evlist *pevlist = (void *)obj;
1101         struct perf_evsel *pos;
1102
1103         if (i >= pevlist->evlist.nr_entries)
1104                 return NULL;
1105
1106         evlist__for_each_entry(&pevlist->evlist, pos) {
1107                 if (i-- == 0)
1108                         break;
1109         }
1110
1111         return Py_BuildValue("O", container_of(pos, struct pyrf_evsel, evsel));
1112 }
1113
1114 static PySequenceMethods pyrf_evlist__sequence_methods = {
1115         .sq_length = pyrf_evlist__length,
1116         .sq_item   = pyrf_evlist__item,
1117 };
1118
1119 static char pyrf_evlist__doc[] = PyDoc_STR("perf event selector list object.");
1120
1121 static PyTypeObject pyrf_evlist__type = {
1122         PyVarObject_HEAD_INIT(NULL, 0)
1123         .tp_name        = "perf.evlist",
1124         .tp_basicsize   = sizeof(struct pyrf_evlist),
1125         .tp_dealloc     = (destructor)pyrf_evlist__delete,
1126         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
1127         .tp_as_sequence = &pyrf_evlist__sequence_methods,
1128         .tp_doc         = pyrf_evlist__doc,
1129         .tp_methods     = pyrf_evlist__methods,
1130         .tp_init        = (initproc)pyrf_evlist__init,
1131 };
1132
1133 static int pyrf_evlist__setup_types(void)
1134 {
1135         pyrf_evlist__type.tp_new = PyType_GenericNew;
1136         return PyType_Ready(&pyrf_evlist__type);
1137 }
1138
1139 #define PERF_CONST(name) { #name, PERF_##name }
1140
1141 static struct {
1142         const char *name;
1143         int         value;
1144 } perf__constants[] = {
1145         PERF_CONST(TYPE_HARDWARE),
1146         PERF_CONST(TYPE_SOFTWARE),
1147         PERF_CONST(TYPE_TRACEPOINT),
1148         PERF_CONST(TYPE_HW_CACHE),
1149         PERF_CONST(TYPE_RAW),
1150         PERF_CONST(TYPE_BREAKPOINT),
1151
1152         PERF_CONST(COUNT_HW_CPU_CYCLES),
1153         PERF_CONST(COUNT_HW_INSTRUCTIONS),
1154         PERF_CONST(COUNT_HW_CACHE_REFERENCES),
1155         PERF_CONST(COUNT_HW_CACHE_MISSES),
1156         PERF_CONST(COUNT_HW_BRANCH_INSTRUCTIONS),
1157         PERF_CONST(COUNT_HW_BRANCH_MISSES),
1158         PERF_CONST(COUNT_HW_BUS_CYCLES),
1159         PERF_CONST(COUNT_HW_CACHE_L1D),
1160         PERF_CONST(COUNT_HW_CACHE_L1I),
1161         PERF_CONST(COUNT_HW_CACHE_LL),
1162         PERF_CONST(COUNT_HW_CACHE_DTLB),
1163         PERF_CONST(COUNT_HW_CACHE_ITLB),
1164         PERF_CONST(COUNT_HW_CACHE_BPU),
1165         PERF_CONST(COUNT_HW_CACHE_OP_READ),
1166         PERF_CONST(COUNT_HW_CACHE_OP_WRITE),
1167         PERF_CONST(COUNT_HW_CACHE_OP_PREFETCH),
1168         PERF_CONST(COUNT_HW_CACHE_RESULT_ACCESS),
1169         PERF_CONST(COUNT_HW_CACHE_RESULT_MISS),
1170
1171         PERF_CONST(COUNT_HW_STALLED_CYCLES_FRONTEND),
1172         PERF_CONST(COUNT_HW_STALLED_CYCLES_BACKEND),
1173
1174         PERF_CONST(COUNT_SW_CPU_CLOCK),
1175         PERF_CONST(COUNT_SW_TASK_CLOCK),
1176         PERF_CONST(COUNT_SW_PAGE_FAULTS),
1177         PERF_CONST(COUNT_SW_CONTEXT_SWITCHES),
1178         PERF_CONST(COUNT_SW_CPU_MIGRATIONS),
1179         PERF_CONST(COUNT_SW_PAGE_FAULTS_MIN),
1180         PERF_CONST(COUNT_SW_PAGE_FAULTS_MAJ),
1181         PERF_CONST(COUNT_SW_ALIGNMENT_FAULTS),
1182         PERF_CONST(COUNT_SW_EMULATION_FAULTS),
1183         PERF_CONST(COUNT_SW_DUMMY),
1184
1185         PERF_CONST(SAMPLE_IP),
1186         PERF_CONST(SAMPLE_TID),
1187         PERF_CONST(SAMPLE_TIME),
1188         PERF_CONST(SAMPLE_ADDR),
1189         PERF_CONST(SAMPLE_READ),
1190         PERF_CONST(SAMPLE_CALLCHAIN),
1191         PERF_CONST(SAMPLE_ID),
1192         PERF_CONST(SAMPLE_CPU),
1193         PERF_CONST(SAMPLE_PERIOD),
1194         PERF_CONST(SAMPLE_STREAM_ID),
1195         PERF_CONST(SAMPLE_RAW),
1196
1197         PERF_CONST(FORMAT_TOTAL_TIME_ENABLED),
1198         PERF_CONST(FORMAT_TOTAL_TIME_RUNNING),
1199         PERF_CONST(FORMAT_ID),
1200         PERF_CONST(FORMAT_GROUP),
1201
1202         PERF_CONST(RECORD_MMAP),
1203         PERF_CONST(RECORD_LOST),
1204         PERF_CONST(RECORD_COMM),
1205         PERF_CONST(RECORD_EXIT),
1206         PERF_CONST(RECORD_THROTTLE),
1207         PERF_CONST(RECORD_UNTHROTTLE),
1208         PERF_CONST(RECORD_FORK),
1209         PERF_CONST(RECORD_READ),
1210         PERF_CONST(RECORD_SAMPLE),
1211         PERF_CONST(RECORD_MMAP2),
1212         PERF_CONST(RECORD_AUX),
1213         PERF_CONST(RECORD_ITRACE_START),
1214         PERF_CONST(RECORD_LOST_SAMPLES),
1215         PERF_CONST(RECORD_SWITCH),
1216         PERF_CONST(RECORD_SWITCH_CPU_WIDE),
1217
1218         PERF_CONST(RECORD_MISC_SWITCH_OUT),
1219         { .name = NULL, },
1220 };
1221
1222 static PyObject *pyrf__tracepoint(struct pyrf_evsel *pevsel,
1223                                   PyObject *args, PyObject *kwargs)
1224 {
1225         struct event_format *tp_format;
1226         static char *kwlist[] = { "sys", "name", NULL };
1227         char *sys  = NULL;
1228         char *name = NULL;
1229
1230         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|ss", kwlist,
1231                                          &sys, &name))
1232                 return NULL;
1233
1234         tp_format = trace_event__tp_format(sys, name);
1235         if (IS_ERR(tp_format))
1236                 return _PyLong_FromLong(-1);
1237
1238         return _PyLong_FromLong(tp_format->id);
1239 }
1240
1241 static PyMethodDef perf__methods[] = {
1242         {
1243                 .ml_name  = "tracepoint",
1244                 .ml_meth  = (PyCFunction) pyrf__tracepoint,
1245                 .ml_flags = METH_VARARGS | METH_KEYWORDS,
1246                 .ml_doc   = PyDoc_STR("Get tracepoint config.")
1247         },
1248         { .ml_name = NULL, }
1249 };
1250
1251 #if PY_MAJOR_VERSION < 3
1252 PyMODINIT_FUNC initperf(void)
1253 #else
1254 PyMODINIT_FUNC PyInit_perf(void)
1255 #endif
1256 {
1257         PyObject *obj;
1258         int i;
1259         PyObject *dict;
1260 #if PY_MAJOR_VERSION < 3
1261         PyObject *module = Py_InitModule("perf", perf__methods);
1262 #else
1263         static struct PyModuleDef moduledef = {
1264                 PyModuleDef_HEAD_INIT,
1265                 "perf",                 /* m_name */
1266                 "",                     /* m_doc */
1267                 -1,                     /* m_size */
1268                 perf__methods,          /* m_methods */
1269                 NULL,                   /* m_reload */
1270                 NULL,                   /* m_traverse */
1271                 NULL,                   /* m_clear */
1272                 NULL,                   /* m_free */
1273         };
1274         PyObject *module = PyModule_Create(&moduledef);
1275 #endif
1276
1277         if (module == NULL ||
1278             pyrf_event__setup_types() < 0 ||
1279             pyrf_evlist__setup_types() < 0 ||
1280             pyrf_evsel__setup_types() < 0 ||
1281             pyrf_thread_map__setup_types() < 0 ||
1282             pyrf_cpu_map__setup_types() < 0)
1283 #if PY_MAJOR_VERSION < 3
1284                 return;
1285 #else
1286                 return module;
1287 #endif
1288
1289         /* The page_size is placed in util object. */
1290         page_size = sysconf(_SC_PAGE_SIZE);
1291
1292         Py_INCREF(&pyrf_evlist__type);
1293         PyModule_AddObject(module, "evlist", (PyObject*)&pyrf_evlist__type);
1294
1295         Py_INCREF(&pyrf_evsel__type);
1296         PyModule_AddObject(module, "evsel", (PyObject*)&pyrf_evsel__type);
1297
1298         Py_INCREF(&pyrf_mmap_event__type);
1299         PyModule_AddObject(module, "mmap_event", (PyObject *)&pyrf_mmap_event__type);
1300
1301         Py_INCREF(&pyrf_lost_event__type);
1302         PyModule_AddObject(module, "lost_event", (PyObject *)&pyrf_lost_event__type);
1303
1304         Py_INCREF(&pyrf_comm_event__type);
1305         PyModule_AddObject(module, "comm_event", (PyObject *)&pyrf_comm_event__type);
1306
1307         Py_INCREF(&pyrf_task_event__type);
1308         PyModule_AddObject(module, "task_event", (PyObject *)&pyrf_task_event__type);
1309
1310         Py_INCREF(&pyrf_throttle_event__type);
1311         PyModule_AddObject(module, "throttle_event", (PyObject *)&pyrf_throttle_event__type);
1312
1313         Py_INCREF(&pyrf_task_event__type);
1314         PyModule_AddObject(module, "task_event", (PyObject *)&pyrf_task_event__type);
1315
1316         Py_INCREF(&pyrf_read_event__type);
1317         PyModule_AddObject(module, "read_event", (PyObject *)&pyrf_read_event__type);
1318
1319         Py_INCREF(&pyrf_sample_event__type);
1320         PyModule_AddObject(module, "sample_event", (PyObject *)&pyrf_sample_event__type);
1321
1322         Py_INCREF(&pyrf_context_switch_event__type);
1323         PyModule_AddObject(module, "switch_event", (PyObject *)&pyrf_context_switch_event__type);
1324
1325         Py_INCREF(&pyrf_thread_map__type);
1326         PyModule_AddObject(module, "thread_map", (PyObject*)&pyrf_thread_map__type);
1327
1328         Py_INCREF(&pyrf_cpu_map__type);
1329         PyModule_AddObject(module, "cpu_map", (PyObject*)&pyrf_cpu_map__type);
1330
1331         dict = PyModule_GetDict(module);
1332         if (dict == NULL)
1333                 goto error;
1334
1335         for (i = 0; perf__constants[i].name != NULL; i++) {
1336                 obj = _PyLong_FromLong(perf__constants[i].value);
1337                 if (obj == NULL)
1338                         goto error;
1339                 PyDict_SetItemString(dict, perf__constants[i].name, obj);
1340                 Py_DECREF(obj);
1341         }
1342
1343 error:
1344         if (PyErr_Occurred())
1345                 PyErr_SetString(PyExc_ImportError, "perf: Init failed!");
1346 #if PY_MAJOR_VERSION >= 3
1347         return module;
1348 #endif
1349 }
1350
1351 /*
1352  * Dummy, to avoid dragging all the test_attr infrastructure in the python
1353  * binding.
1354  */
1355 void test_attr__open(struct perf_event_attr *attr, pid_t pid, int cpu,
1356                      int fd, int group_fd, unsigned long flags)
1357 {
1358 }