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 #include "mmap.h"
  15
  16 #if PY_MAJOR_VERSION < 3
  17 #define _PyUnicode_FromString(arg) \
  18   PyString_FromString(arg)
  19 #define _PyUnicode_AsString(arg) \
  20   PyString_AsString(arg)
  21 #define _PyUnicode_FromFormat(...) \
  22   PyString_FromFormat(__VA_ARGS__)
  23 #define _PyLong_FromLong(arg) \
  24   PyInt_FromLong(arg)
  25
  26 #else
  27
  28 #define _PyUnicode_FromString(arg) \
  29   PyUnicode_FromString(arg)
  30 #define _PyUnicode_FromFormat(...) \
  31   PyUnicode_FromFormat(__VA_ARGS__)
  32 #define _PyLong_FromLong(arg) \
  33   PyLong_FromLong(arg)
  34 #endif
  35
  36 #ifndef Py_TYPE
  37 #define Py_TYPE(ob) (((PyObject*)(ob))->ob_type)
  38 #endif
  39
  40 /*
  41  * Provide these two so that we don't have to link against callchain.c and
  42  * start dragging hist.c, etc.
  43  */
  44 struct callchain_param callchain_param;
  45
  46 int parse_callchain_record(const char *arg __maybe_unused,
  47                            struct callchain_param *param __maybe_unused)
  48 {
  49         return 0;
  50 }
  51
  52 /*
  53  * Support debug printing even though util/debug.c is not linked.  That means
  54  * implementing 'verbose' and 'eprintf'.
  55  */
  56 int verbose;
  57
  58 int eprintf(int level, int var, const char *fmt, ...)
  59 {
  60         va_list args;
  61         int ret = 0;
  62
  63         if (var >= level) {
  64                 va_start(args, fmt);
  65                 ret = vfprintf(stderr, fmt, args);
  66                 va_end(args);
  67         }
  68
  69         return ret;
  70 }
  71
  72 /* Define PyVarObject_HEAD_INIT for python 2.5 */
  73 #ifndef PyVarObject_HEAD_INIT
  74 # define PyVarObject_HEAD_INIT(type, size) PyObject_HEAD_INIT(type) size,
  75 #endif
  76
  77 #if PY_MAJOR_VERSION < 3
  78 PyMODINIT_FUNC initperf(void);
  79 #else
  80 PyMODINIT_FUNC PyInit_perf(void);
  81 #endif
  82
  83 #define member_def(type, member, ptype, help) \
  84         { #member, ptype, \
  85           offsetof(struct pyrf_event, event) + offsetof(struct type, member), \
  86           0, help }
  87
  88 #define sample_member_def(name, member, ptype, help) \
  89         { #name, ptype, \
  90           offsetof(struct pyrf_event, sample) + offsetof(struct perf_sample, member), \
  91           0, help }
  92
  93 struct pyrf_event {
  94         PyObject_HEAD
  95         struct perf_evsel *evsel;
  96         struct perf_sample sample;
  97         union perf_event   event;
  98 };
  99
 100 #define sample_members \
 101         sample_member_def(sample_ip, ip, T_ULONGLONG, "event type"),                     \
 102         sample_member_def(sample_pid, pid, T_INT, "event pid"),                  \
 103         sample_member_def(sample_tid, tid, T_INT, "event tid"),                  \
 104         sample_member_def(sample_time, time, T_ULONGLONG, "event timestamp"),            \
 105         sample_member_def(sample_addr, addr, T_ULONGLONG, "event addr"),                 \
 106         sample_member_def(sample_id, id, T_ULONGLONG, "event id"),                       \
 107         sample_member_def(sample_stream_id, stream_id, T_ULONGLONG, "event stream id"), \
 108         sample_member_def(sample_period, period, T_ULONGLONG, "event period"),           \
 109         sample_member_def(sample_cpu, cpu, T_UINT, "event cpu"),
 110
 111 static char pyrf_mmap_event__doc[] = PyDoc_STR("perf mmap event object.");
 112
 113 static PyMemberDef pyrf_mmap_event__members[] = {
 114         sample_members
 115         member_def(perf_event_header, type, T_UINT, "event type"),
 116         member_def(perf_event_header, misc, T_UINT, "event misc"),
 117         member_def(mmap_event, pid, T_UINT, "event pid"),
 118         member_def(mmap_event, tid, T_UINT, "event tid"),
 119         member_def(mmap_event, start, T_ULONGLONG, "start of the map"),
 120         member_def(mmap_event, len, T_ULONGLONG, "map length"),
 121         member_def(mmap_event, pgoff, T_ULONGLONG, "page offset"),
 122         member_def(mmap_event, filename, T_STRING_INPLACE, "backing store"),
 123         { .name = NULL, },
 124 };
 125
 126 static PyObject *pyrf_mmap_event__repr(struct pyrf_event *pevent)
 127 {
 128         PyObject *ret;
 129         char *s;
 130
 131         if (asprintf(&s, "{ type: mmap, pid: %u, tid: %u, start: %#" PRIx64 ", "
 132                          "length: %#" PRIx64 ", offset: %#" PRIx64 ", "
 133                          "filename: %s }",
 134                      pevent->event.mmap.pid, pevent->event.mmap.tid,
 135                      pevent->event.mmap.start, pevent->event.mmap.len,
 136                      pevent->event.mmap.pgoff, pevent->event.mmap.filename) < 0) {
 137                 ret = PyErr_NoMemory();
 138         } else {
 139                 ret = _PyUnicode_FromString(s);
 140                 free(s);
 141         }
 142         return ret;
 143 }
 144
 145 static PyTypeObject pyrf_mmap_event__type = {
 146         PyVarObject_HEAD_INIT(NULL, 0)
 147         .tp_name        = "perf.mmap_event",
 148         .tp_basicsize   = sizeof(struct pyrf_event),
 149         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 150         .tp_doc         = pyrf_mmap_event__doc,
 151         .tp_members     = pyrf_mmap_event__members,
 152         .tp_repr        = (reprfunc)pyrf_mmap_event__repr,
 153 };
 154
 155 static char pyrf_task_event__doc[] = PyDoc_STR("perf task (fork/exit) event object.");
 156
 157 static PyMemberDef pyrf_task_event__members[] = {
 158         sample_members
 159         member_def(perf_event_header, type, T_UINT, "event type"),
 160         member_def(fork_event, pid, T_UINT, "event pid"),
 161         member_def(fork_event, ppid, T_UINT, "event ppid"),
 162         member_def(fork_event, tid, T_UINT, "event tid"),
 163         member_def(fork_event, ptid, T_UINT, "event ptid"),
 164         member_def(fork_event, time, T_ULONGLONG, "timestamp"),
 165         { .name = NULL, },
 166 };
 167
 168 static PyObject *pyrf_task_event__repr(struct pyrf_event *pevent)
 169 {
 170         return _PyUnicode_FromFormat("{ type: %s, pid: %u, ppid: %u, tid: %u, "
 171                                    "ptid: %u, time: %" PRIu64 "}",
 172                                    pevent->event.header.type == PERF_RECORD_FORK ? "fork" : "exit",
 173                                    pevent->event.fork.pid,
 174                                    pevent->event.fork.ppid,
 175                                    pevent->event.fork.tid,
 176                                    pevent->event.fork.ptid,
 177                                    pevent->event.fork.time);
 178 }
 179
 180 static PyTypeObject pyrf_task_event__type = {
 181         PyVarObject_HEAD_INIT(NULL, 0)
 182         .tp_name        = "perf.task_event",
 183         .tp_basicsize   = sizeof(struct pyrf_event),
 184         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 185         .tp_doc         = pyrf_task_event__doc,
 186         .tp_members     = pyrf_task_event__members,
 187         .tp_repr        = (reprfunc)pyrf_task_event__repr,
 188 };
 189
 190 static char pyrf_comm_event__doc[] = PyDoc_STR("perf comm event object.");
 191
 192 static PyMemberDef pyrf_comm_event__members[] = {
 193         sample_members
 194         member_def(perf_event_header, type, T_UINT, "event type"),
 195         member_def(comm_event, pid, T_UINT, "event pid"),
 196         member_def(comm_event, tid, T_UINT, "event tid"),
 197         member_def(comm_event, comm, T_STRING_INPLACE, "process name"),
 198         { .name = NULL, },
 199 };
 200
 201 static PyObject *pyrf_comm_event__repr(struct pyrf_event *pevent)
 202 {
 203         return _PyUnicode_FromFormat("{ type: comm, pid: %u, tid: %u, comm: %s }",
 204                                    pevent->event.comm.pid,
 205                                    pevent->event.comm.tid,
 206                                    pevent->event.comm.comm);
 207 }
 208
 209 static PyTypeObject pyrf_comm_event__type = {
 210         PyVarObject_HEAD_INIT(NULL, 0)
 211         .tp_name        = "perf.comm_event",
 212         .tp_basicsize   = sizeof(struct pyrf_event),
 213         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 214         .tp_doc         = pyrf_comm_event__doc,
 215         .tp_members     = pyrf_comm_event__members,
 216         .tp_repr        = (reprfunc)pyrf_comm_event__repr,
 217 };
 218
 219 static char pyrf_throttle_event__doc[] = PyDoc_STR("perf throttle event object.");
 220
 221 static PyMemberDef pyrf_throttle_event__members[] = {
 222         sample_members
 223         member_def(perf_event_header, type, T_UINT, "event type"),
 224         member_def(throttle_event, time, T_ULONGLONG, "timestamp"),
 225         member_def(throttle_event, id, T_ULONGLONG, "event id"),
 226         member_def(throttle_event, stream_id, T_ULONGLONG, "event stream id"),
 227         { .name = NULL, },
 228 };
 229
 230 static PyObject *pyrf_throttle_event__repr(struct pyrf_event *pevent)
 231 {
 232         struct throttle_event *te = (struct throttle_event *)(&pevent->event.header + 1);
 233
 234         return _PyUnicode_FromFormat("{ type: %sthrottle, time: %" PRIu64 ", id: %" PRIu64
 235                                    ", stream_id: %" PRIu64 " }",
 236                                    pevent->event.header.type == PERF_RECORD_THROTTLE ? "" : "un",
 237                                    te->time, te->id, te->stream_id);
 238 }
 239
 240 static PyTypeObject pyrf_throttle_event__type = {
 241         PyVarObject_HEAD_INIT(NULL, 0)
 242         .tp_name        = "perf.throttle_event",
 243         .tp_basicsize   = sizeof(struct pyrf_event),
 244         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 245         .tp_doc         = pyrf_throttle_event__doc,
 246         .tp_members     = pyrf_throttle_event__members,
 247         .tp_repr        = (reprfunc)pyrf_throttle_event__repr,
 248 };
 249
 250 static char pyrf_lost_event__doc[] = PyDoc_STR("perf lost event object.");
 251
 252 static PyMemberDef pyrf_lost_event__members[] = {
 253         sample_members
 254         member_def(lost_event, id, T_ULONGLONG, "event id"),
 255         member_def(lost_event, lost, T_ULONGLONG, "number of lost events"),
 256         { .name = NULL, },
 257 };
 258
 259 static PyObject *pyrf_lost_event__repr(struct pyrf_event *pevent)
 260 {
 261         PyObject *ret;
 262         char *s;
 263
 264         if (asprintf(&s, "{ type: lost, id: %#" PRIx64 ", "
 265                          "lost: %#" PRIx64 " }",
 266                      pevent->event.lost.id, pevent->event.lost.lost) < 0) {
 267                 ret = PyErr_NoMemory();
 268         } else {
 269                 ret = _PyUnicode_FromString(s);
 270                 free(s);
 271         }
 272         return ret;
 273 }
 274
 275 static PyTypeObject pyrf_lost_event__type = {
 276         PyVarObject_HEAD_INIT(NULL, 0)
 277         .tp_name        = "perf.lost_event",
 278         .tp_basicsize   = sizeof(struct pyrf_event),
 279         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 280         .tp_doc         = pyrf_lost_event__doc,
 281         .tp_members     = pyrf_lost_event__members,
 282         .tp_repr        = (reprfunc)pyrf_lost_event__repr,
 283 };
 284
 285 static char pyrf_read_event__doc[] = PyDoc_STR("perf read event object.");
 286
 287 static PyMemberDef pyrf_read_event__members[] = {
 288         sample_members
 289         member_def(read_event, pid, T_UINT, "event pid"),
 290         member_def(read_event, tid, T_UINT, "event tid"),
 291         { .name = NULL, },
 292 };
 293
 294 static PyObject *pyrf_read_event__repr(struct pyrf_event *pevent)
 295 {
 296         return _PyUnicode_FromFormat("{ type: read, pid: %u, tid: %u }",
 297                                    pevent->event.read.pid,
 298                                    pevent->event.read.tid);
 299         /*
 300          * FIXME: return the array of read values,
 301          * making this method useful ;-)
 302          */
 303 }
 304
 305 static PyTypeObject pyrf_read_event__type = {
 306         PyVarObject_HEAD_INIT(NULL, 0)
 307         .tp_name        = "perf.read_event",
 308         .tp_basicsize   = sizeof(struct pyrf_event),
 309         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 310         .tp_doc         = pyrf_read_event__doc,
 311         .tp_members     = pyrf_read_event__members,
 312         .tp_repr        = (reprfunc)pyrf_read_event__repr,
 313 };
 314
 315 static char pyrf_sample_event__doc[] = PyDoc_STR("perf sample event object.");
 316
 317 static PyMemberDef pyrf_sample_event__members[] = {
 318         sample_members
 319         member_def(perf_event_header, type, T_UINT, "event type"),
 320         { .name = NULL, },
 321 };
 322
 323 static PyObject *pyrf_sample_event__repr(struct pyrf_event *pevent)
 324 {
 325         PyObject *ret;
 326         char *s;
 327
 328         if (asprintf(&s, "{ type: sample }") < 0) {
 329                 ret = PyErr_NoMemory();
 330         } else {
 331                 ret = _PyUnicode_FromString(s);
 332                 free(s);
 333         }
 334         return ret;
 335 }
 336
 337 static bool is_tracepoint(struct pyrf_event *pevent)
 338 {
 339         return pevent->evsel->attr.type == PERF_TYPE_TRACEPOINT;
 340 }
 341
 342 static PyObject*
 343 tracepoint_field(struct pyrf_event *pe, struct format_field *field)
 344 {
 345         struct tep_handle *pevent = field->event->pevent;
 346         void *data = pe->sample.raw_data;
 347         PyObject *ret = NULL;
 348         unsigned long long val;
 349         unsigned int offset, len;
 350
 351         if (field->flags & FIELD_IS_ARRAY) {
 352                 offset = field->offset;
 353                 len    = field->size;
 354                 if (field->flags & FIELD_IS_DYNAMIC) {
 355                         val     = tep_read_number(pevent, data + offset, len);
 356                         offset  = val;
 357                         len     = offset >> 16;
 358                         offset &= 0xffff;
 359                 }
 360                 if (field->flags & FIELD_IS_STRING &&
 361                     is_printable_array(data + offset, len)) {
 362                         ret = _PyUnicode_FromString((char *)data + offset);
 363                 } else {
 364                         ret = PyByteArray_FromStringAndSize((const char *) data + offset, len);
 365                         field->flags &= ~FIELD_IS_STRING;
 366                 }
 367         } else {
 368                 val = tep_read_number(pevent, data + field->offset,
 369                                       field->size);
 370                 if (field->flags & FIELD_IS_POINTER)
 371                         ret = PyLong_FromUnsignedLong((unsigned long) val);
 372                 else if (field->flags & FIELD_IS_SIGNED)
 373                         ret = PyLong_FromLong((long) val);
 374                 else
 375                         ret = PyLong_FromUnsignedLong((unsigned long) val);
 376         }
 377
 378         return ret;
 379 }
 380
 381 static PyObject*
 382 get_tracepoint_field(struct pyrf_event *pevent, PyObject *attr_name)
 383 {
 384         const char *str = _PyUnicode_AsString(PyObject_Str(attr_name));
 385         struct perf_evsel *evsel = pevent->evsel;
 386         struct format_field *field;
 387
 388         if (!evsel->tp_format) {
 389                 struct event_format *tp_format;
 390
 391                 tp_format = trace_event__tp_format_id(evsel->attr.config);
 392                 if (!tp_format)
 393                         return NULL;
 394
 395                 evsel->tp_format = tp_format;
 396         }
 397
 398         field = tep_find_any_field(evsel->tp_format, str);
 399         if (!field)
 400                 return NULL;
 401
 402         return tracepoint_field(pevent, field);
 403 }
 404
 405 static PyObject*
 406 pyrf_sample_event__getattro(struct pyrf_event *pevent, PyObject *attr_name)
 407 {
 408         PyObject *obj = NULL;
 409
 410         if (is_tracepoint(pevent))
 411                 obj = get_tracepoint_field(pevent, attr_name);
 412
 413         return obj ?: PyObject_GenericGetAttr((PyObject *) pevent, attr_name);
 414 }
 415
 416 static PyTypeObject pyrf_sample_event__type = {
 417         PyVarObject_HEAD_INIT(NULL, 0)
 418         .tp_name        = "perf.sample_event",
 419         .tp_basicsize   = sizeof(struct pyrf_event),
 420         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 421         .tp_doc         = pyrf_sample_event__doc,
 422         .tp_members     = pyrf_sample_event__members,
 423         .tp_repr        = (reprfunc)pyrf_sample_event__repr,
 424         .tp_getattro    = (getattrofunc) pyrf_sample_event__getattro,
 425 };
 426
 427 static char pyrf_context_switch_event__doc[] = PyDoc_STR("perf context_switch event object.");
 428
 429 static PyMemberDef pyrf_context_switch_event__members[] = {
 430         sample_members
 431         member_def(perf_event_header, type, T_UINT, "event type"),
 432         member_def(context_switch_event, next_prev_pid, T_UINT, "next/prev pid"),
 433         member_def(context_switch_event, next_prev_tid, T_UINT, "next/prev tid"),
 434         { .name = NULL, },
 435 };
 436
 437 static PyObject *pyrf_context_switch_event__repr(struct pyrf_event *pevent)
 438 {
 439         PyObject *ret;
 440         char *s;
 441
 442         if (asprintf(&s, "{ type: context_switch, next_prev_pid: %u, next_prev_tid: %u, switch_out: %u }",
 443                      pevent->event.context_switch.next_prev_pid,
 444                      pevent->event.context_switch.next_prev_tid,
 445                      !!(pevent->event.header.misc & PERF_RECORD_MISC_SWITCH_OUT)) < 0) {
 446                 ret = PyErr_NoMemory();
 447         } else {
 448                 ret = _PyUnicode_FromString(s);
 449                 free(s);
 450         }
 451         return ret;
 452 }
 453
 454 static PyTypeObject pyrf_context_switch_event__type = {
 455         PyVarObject_HEAD_INIT(NULL, 0)
 456         .tp_name        = "perf.context_switch_event",
 457         .tp_basicsize   = sizeof(struct pyrf_event),
 458         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 459         .tp_doc         = pyrf_context_switch_event__doc,
 460         .tp_members     = pyrf_context_switch_event__members,
 461         .tp_repr        = (reprfunc)pyrf_context_switch_event__repr,
 462 };
 463
 464 static int pyrf_event__setup_types(void)
 465 {
 466         int err;
 467         pyrf_mmap_event__type.tp_new =
 468         pyrf_task_event__type.tp_new =
 469         pyrf_comm_event__type.tp_new =
 470         pyrf_lost_event__type.tp_new =
 471         pyrf_read_event__type.tp_new =
 472         pyrf_sample_event__type.tp_new =
 473         pyrf_context_switch_event__type.tp_new =
 474         pyrf_throttle_event__type.tp_new = PyType_GenericNew;
 475         err = PyType_Ready(&pyrf_mmap_event__type);
 476         if (err < 0)
 477                 goto out;
 478         err = PyType_Ready(&pyrf_lost_event__type);
 479         if (err < 0)
 480                 goto out;
 481         err = PyType_Ready(&pyrf_task_event__type);
 482         if (err < 0)
 483                 goto out;
 484         err = PyType_Ready(&pyrf_comm_event__type);
 485         if (err < 0)
 486                 goto out;
 487         err = PyType_Ready(&pyrf_throttle_event__type);
 488         if (err < 0)
 489                 goto out;
 490         err = PyType_Ready(&pyrf_read_event__type);
 491         if (err < 0)
 492                 goto out;
 493         err = PyType_Ready(&pyrf_sample_event__type);
 494         if (err < 0)
 495                 goto out;
 496         err = PyType_Ready(&pyrf_context_switch_event__type);
 497         if (err < 0)
 498                 goto out;
 499 out:
 500         return err;
 501 }
 502
 503 static PyTypeObject *pyrf_event__type[] = {
 504         [PERF_RECORD_MMAP]       = &pyrf_mmap_event__type,
 505         [PERF_RECORD_LOST]       = &pyrf_lost_event__type,
 506         [PERF_RECORD_COMM]       = &pyrf_comm_event__type,
 507         [PERF_RECORD_EXIT]       = &pyrf_task_event__type,
 508         [PERF_RECORD_THROTTLE]   = &pyrf_throttle_event__type,
 509         [PERF_RECORD_UNTHROTTLE] = &pyrf_throttle_event__type,
 510         [PERF_RECORD_FORK]       = &pyrf_task_event__type,
 511         [PERF_RECORD_READ]       = &pyrf_read_event__type,
 512         [PERF_RECORD_SAMPLE]     = &pyrf_sample_event__type,
 513         [PERF_RECORD_SWITCH]     = &pyrf_context_switch_event__type,
 514         [PERF_RECORD_SWITCH_CPU_WIDE]  = &pyrf_context_switch_event__type,
 515 };
 516
 517 static PyObject *pyrf_event__new(union perf_event *event)
 518 {
 519         struct pyrf_event *pevent;
 520         PyTypeObject *ptype;
 521
 522         if ((event->header.type < PERF_RECORD_MMAP ||
 523              event->header.type > PERF_RECORD_SAMPLE) &&
 524             !(event->header.type == PERF_RECORD_SWITCH ||
 525               event->header.type == PERF_RECORD_SWITCH_CPU_WIDE))
 526                 return NULL;
 527
 528         ptype = pyrf_event__type[event->header.type];
 529         pevent = PyObject_New(struct pyrf_event, ptype);
 530         if (pevent != NULL)
 531                 memcpy(&pevent->event, event, event->header.size);
 532         return (PyObject *)pevent;
 533 }
 534
 535 struct pyrf_cpu_map {
 536         PyObject_HEAD
 537
 538         struct cpu_map *cpus;
 539 };
 540
 541 static int pyrf_cpu_map__init(struct pyrf_cpu_map *pcpus,
 542                               PyObject *args, PyObject *kwargs)
 543 {
 544         static char *kwlist[] = { "cpustr", NULL };
 545         char *cpustr = NULL;
 546
 547         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|s",
 548                                          kwlist, &cpustr))
 549                 return -1;
 550
 551         pcpus->cpus = cpu_map__new(cpustr);
 552         if (pcpus->cpus == NULL)
 553                 return -1;
 554         return 0;
 555 }
 556
 557 static void pyrf_cpu_map__delete(struct pyrf_cpu_map *pcpus)
 558 {
 559         cpu_map__put(pcpus->cpus);
 560         Py_TYPE(pcpus)->tp_free((PyObject*)pcpus);
 561 }
 562
 563 static Py_ssize_t pyrf_cpu_map__length(PyObject *obj)
 564 {
 565         struct pyrf_cpu_map *pcpus = (void *)obj;
 566
 567         return pcpus->cpus->nr;
 568 }
 569
 570 static PyObject *pyrf_cpu_map__item(PyObject *obj, Py_ssize_t i)
 571 {
 572         struct pyrf_cpu_map *pcpus = (void *)obj;
 573
 574         if (i >= pcpus->cpus->nr)
 575                 return NULL;
 576
 577         return Py_BuildValue("i", pcpus->cpus->map[i]);
 578 }
 579
 580 static PySequenceMethods pyrf_cpu_map__sequence_methods = {
 581         .sq_length = pyrf_cpu_map__length,
 582         .sq_item   = pyrf_cpu_map__item,
 583 };
 584
 585 static char pyrf_cpu_map__doc[] = PyDoc_STR("cpu map object.");
 586
 587 static PyTypeObject pyrf_cpu_map__type = {
 588         PyVarObject_HEAD_INIT(NULL, 0)
 589         .tp_name        = "perf.cpu_map",
 590         .tp_basicsize   = sizeof(struct pyrf_cpu_map),
 591         .tp_dealloc     = (destructor)pyrf_cpu_map__delete,
 592         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 593         .tp_doc         = pyrf_cpu_map__doc,
 594         .tp_as_sequence = &pyrf_cpu_map__sequence_methods,
 595         .tp_init        = (initproc)pyrf_cpu_map__init,
 596 };
 597
 598 static int pyrf_cpu_map__setup_types(void)
 599 {
 600         pyrf_cpu_map__type.tp_new = PyType_GenericNew;
 601         return PyType_Ready(&pyrf_cpu_map__type);
 602 }
 603
 604 struct pyrf_thread_map {
 605         PyObject_HEAD
 606
 607         struct thread_map *threads;
 608 };
 609
 610 static int pyrf_thread_map__init(struct pyrf_thread_map *pthreads,
 611                                  PyObject *args, PyObject *kwargs)
 612 {
 613         static char *kwlist[] = { "pid", "tid", "uid", NULL };
 614         int pid = -1, tid = -1, uid = UINT_MAX;
 615
 616         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|iii",
 617                                          kwlist, &pid, &tid, &uid))
 618                 return -1;
 619
 620         pthreads->threads = thread_map__new(pid, tid, uid);
 621         if (pthreads->threads == NULL)
 622                 return -1;
 623         return 0;
 624 }
 625
 626 static void pyrf_thread_map__delete(struct pyrf_thread_map *pthreads)
 627 {
 628         thread_map__put(pthreads->threads);
 629         Py_TYPE(pthreads)->tp_free((PyObject*)pthreads);
 630 }
 631
 632 static Py_ssize_t pyrf_thread_map__length(PyObject *obj)
 633 {
 634         struct pyrf_thread_map *pthreads = (void *)obj;
 635
 636         return pthreads->threads->nr;
 637 }
 638
 639 static PyObject *pyrf_thread_map__item(PyObject *obj, Py_ssize_t i)
 640 {
 641         struct pyrf_thread_map *pthreads = (void *)obj;
 642
 643         if (i >= pthreads->threads->nr)
 644                 return NULL;
 645
 646         return Py_BuildValue("i", pthreads->threads->map[i]);
 647 }
 648
 649 static PySequenceMethods pyrf_thread_map__sequence_methods = {
 650         .sq_length = pyrf_thread_map__length,
 651         .sq_item   = pyrf_thread_map__item,
 652 };
 653
 654 static char pyrf_thread_map__doc[] = PyDoc_STR("thread map object.");
 655
 656 static PyTypeObject pyrf_thread_map__type = {
 657         PyVarObject_HEAD_INIT(NULL, 0)
 658         .tp_name        = "perf.thread_map",
 659         .tp_basicsize   = sizeof(struct pyrf_thread_map),
 660         .tp_dealloc     = (destructor)pyrf_thread_map__delete,
 661         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 662         .tp_doc         = pyrf_thread_map__doc,
 663         .tp_as_sequence = &pyrf_thread_map__sequence_methods,
 664         .tp_init        = (initproc)pyrf_thread_map__init,
 665 };
 666
 667 static int pyrf_thread_map__setup_types(void)
 668 {
 669         pyrf_thread_map__type.tp_new = PyType_GenericNew;
 670         return PyType_Ready(&pyrf_thread_map__type);
 671 }
 672
 673 struct pyrf_evsel {
 674         PyObject_HEAD
 675
 676         struct perf_evsel evsel;
 677 };
 678
 679 static int pyrf_evsel__init(struct pyrf_evsel *pevsel,
 680                             PyObject *args, PyObject *kwargs)
 681 {
 682         struct perf_event_attr attr = {
 683                 .type = PERF_TYPE_HARDWARE,
 684                 .config = PERF_COUNT_HW_CPU_CYCLES,
 685                 .sample_type = PERF_SAMPLE_PERIOD | PERF_SAMPLE_TID,
 686         };
 687         static char *kwlist[] = {
 688                 "type",
 689                 "config",
 690                 "sample_freq",
 691                 "sample_period",
 692                 "sample_type",
 693                 "read_format",
 694                 "disabled",
 695                 "inherit",
 696                 "pinned",
 697                 "exclusive",
 698                 "exclude_user",
 699                 "exclude_kernel",
 700                 "exclude_hv",
 701                 "exclude_idle",
 702                 "mmap",
 703                 "context_switch",
 704                 "comm",
 705                 "freq",
 706                 "inherit_stat",
 707                 "enable_on_exec",
 708                 "task",
 709                 "watermark",
 710                 "precise_ip",
 711                 "mmap_data",
 712                 "sample_id_all",
 713                 "wakeup_events",
 714                 "bp_type",
 715                 "bp_addr",
 716                 "bp_len",
 717                  NULL
 718         };
 719         u64 sample_period = 0;
 720         u32 disabled = 0,
 721             inherit = 0,
 722             pinned = 0,
 723             exclusive = 0,
 724             exclude_user = 0,
 725             exclude_kernel = 0,
 726             exclude_hv = 0,
 727             exclude_idle = 0,
 728             mmap = 0,
 729             context_switch = 0,
 730             comm = 0,
 731             freq = 1,
 732             inherit_stat = 0,
 733             enable_on_exec = 0,
 734             task = 0,
 735             watermark = 0,
 736             precise_ip = 0,
 737             mmap_data = 0,
 738             sample_id_all = 1;
 739         int idx = 0;
 740
 741         if (!PyArg_ParseTupleAndKeywords(args, kwargs,
 742                                          "|iKiKKiiiiiiiiiiiiiiiiiiiiiiKK", kwlist,
 743                                          &attr.type, &attr.config, &attr.sample_freq,
 744                                          &sample_period, &attr.sample_type,
 745                                          &attr.read_format, &disabled, &inherit,
 746                                          &pinned, &exclusive, &exclude_user,
 747                                          &exclude_kernel, &exclude_hv, &exclude_idle,
 748                                          &mmap, &context_switch, &comm, &freq, &inherit_stat,
 749                                          &enable_on_exec, &task, &watermark,
 750                                          &precise_ip, &mmap_data, &sample_id_all,
 751                                          &attr.wakeup_events, &attr.bp_type,
 752                                          &attr.bp_addr, &attr.bp_len, &idx))
 753                 return -1;
 754
 755         /* union... */
 756         if (sample_period != 0) {
 757                 if (attr.sample_freq != 0)
 758                         return -1; /* FIXME: throw right exception */
 759                 attr.sample_period = sample_period;
 760         }
 761
 762         /* Bitfields */
 763         attr.disabled       = disabled;
 764         attr.inherit        = inherit;
 765         attr.pinned         = pinned;
 766         attr.exclusive      = exclusive;
 767         attr.exclude_user   = exclude_user;
 768         attr.exclude_kernel = exclude_kernel;
 769         attr.exclude_hv     = exclude_hv;
 770         attr.exclude_idle   = exclude_idle;
 771         attr.mmap           = mmap;
 772         attr.context_switch = context_switch;
 773         attr.comm           = comm;
 774         attr.freq           = freq;
 775         attr.inherit_stat   = inherit_stat;
 776         attr.enable_on_exec = enable_on_exec;
 777         attr.task           = task;
 778         attr.watermark      = watermark;
 779         attr.precise_ip     = precise_ip;
 780         attr.mmap_data      = mmap_data;
 781         attr.sample_id_all  = sample_id_all;
 782         attr.size           = sizeof(attr);
 783
 784         perf_evsel__init(&pevsel->evsel, &attr, idx);
 785         return 0;
 786 }
 787
 788 static void pyrf_evsel__delete(struct pyrf_evsel *pevsel)
 789 {
 790         perf_evsel__exit(&pevsel->evsel);
 791         Py_TYPE(pevsel)->tp_free((PyObject*)pevsel);
 792 }
 793
 794 static PyObject *pyrf_evsel__open(struct pyrf_evsel *pevsel,
 795                                   PyObject *args, PyObject *kwargs)
 796 {
 797         struct perf_evsel *evsel = &pevsel->evsel;
 798         struct cpu_map *cpus = NULL;
 799         struct thread_map *threads = NULL;
 800         PyObject *pcpus = NULL, *pthreads = NULL;
 801         int group = 0, inherit = 0;
 802         static char *kwlist[] = { "cpus", "threads", "group", "inherit", NULL };
 803
 804         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|OOii", kwlist,
 805                                          &pcpus, &pthreads, &group, &inherit))
 806                 return NULL;
 807
 808         if (pthreads != NULL)
 809                 threads = ((struct pyrf_thread_map *)pthreads)->threads;
 810
 811         if (pcpus != NULL)
 812                 cpus = ((struct pyrf_cpu_map *)pcpus)->cpus;
 813
 814         evsel->attr.inherit = inherit;
 815         /*
 816          * This will group just the fds for this single evsel, to group
 817          * multiple events, use evlist.open().
 818          */
 819         if (perf_evsel__open(evsel, cpus, threads) < 0) {
 820                 PyErr_SetFromErrno(PyExc_OSError);
 821                 return NULL;
 822         }
 823
 824         Py_INCREF(Py_None);
 825         return Py_None;
 826 }
 827
 828 static PyMethodDef pyrf_evsel__methods[] = {
 829         {
 830                 .ml_name  = "open",
 831                 .ml_meth  = (PyCFunction)pyrf_evsel__open,
 832                 .ml_flags = METH_VARARGS | METH_KEYWORDS,
 833                 .ml_doc   = PyDoc_STR("open the event selector file descriptor table.")
 834         },
 835         { .ml_name = NULL, }
 836 };
 837
 838 static char pyrf_evsel__doc[] = PyDoc_STR("perf event selector list object.");
 839
 840 static PyTypeObject pyrf_evsel__type = {
 841         PyVarObject_HEAD_INIT(NULL, 0)
 842         .tp_name        = "perf.evsel",
 843         .tp_basicsize   = sizeof(struct pyrf_evsel),
 844         .tp_dealloc     = (destructor)pyrf_evsel__delete,
 845         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 846         .tp_doc         = pyrf_evsel__doc,
 847         .tp_methods     = pyrf_evsel__methods,
 848         .tp_init        = (initproc)pyrf_evsel__init,
 849 };
 850
 851 static int pyrf_evsel__setup_types(void)
 852 {
 853         pyrf_evsel__type.tp_new = PyType_GenericNew;
 854         return PyType_Ready(&pyrf_evsel__type);
 855 }
 856
 857 struct pyrf_evlist {
 858         PyObject_HEAD
 859
 860         struct perf_evlist evlist;
 861 };
 862
 863 static int pyrf_evlist__init(struct pyrf_evlist *pevlist,
 864                              PyObject *args, PyObject *kwargs __maybe_unused)
 865 {
 866         PyObject *pcpus = NULL, *pthreads = NULL;
 867         struct cpu_map *cpus;
 868         struct thread_map *threads;
 869
 870         if (!PyArg_ParseTuple(args, "OO", &pcpus, &pthreads))
 871                 return -1;
 872
 873         threads = ((struct pyrf_thread_map *)pthreads)->threads;
 874         cpus = ((struct pyrf_cpu_map *)pcpus)->cpus;
 875         perf_evlist__init(&pevlist->evlist, cpus, threads);
 876         return 0;
 877 }
 878
 879 static void pyrf_evlist__delete(struct pyrf_evlist *pevlist)
 880 {
 881         perf_evlist__exit(&pevlist->evlist);
 882         Py_TYPE(pevlist)->tp_free((PyObject*)pevlist);
 883 }
 884
 885 static PyObject *pyrf_evlist__mmap(struct pyrf_evlist *pevlist,
 886                                    PyObject *args, PyObject *kwargs)
 887 {
 888         struct perf_evlist *evlist = &pevlist->evlist;
 889         static char *kwlist[] = { "pages", "overwrite", NULL };
 890         int pages = 128, overwrite = false;
 891
 892         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|ii", kwlist,
 893                                          &pages, &overwrite))
 894                 return NULL;
 895
 896         if (perf_evlist__mmap(evlist, pages) < 0) {
 897                 PyErr_SetFromErrno(PyExc_OSError);
 898                 return NULL;
 899         }
 900
 901         Py_INCREF(Py_None);
 902         return Py_None;
 903 }
 904
 905 static PyObject *pyrf_evlist__poll(struct pyrf_evlist *pevlist,
 906                                    PyObject *args, PyObject *kwargs)
 907 {
 908         struct perf_evlist *evlist = &pevlist->evlist;
 909         static char *kwlist[] = { "timeout", NULL };
 910         int timeout = -1, n;
 911
 912         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|i", kwlist, &timeout))
 913                 return NULL;
 914
 915         n = perf_evlist__poll(evlist, timeout);
 916         if (n < 0) {
 917                 PyErr_SetFromErrno(PyExc_OSError);
 918                 return NULL;
 919         }
 920
 921         return Py_BuildValue("i", n);
 922 }
 923
 924 static PyObject *pyrf_evlist__get_pollfd(struct pyrf_evlist *pevlist,
 925                                          PyObject *args __maybe_unused,
 926                                          PyObject *kwargs __maybe_unused)
 927 {
 928         struct perf_evlist *evlist = &pevlist->evlist;
 929         PyObject *list = PyList_New(0);
 930         int i;
 931
 932         for (i = 0; i < evlist->pollfd.nr; ++i) {
 933                 PyObject *file;
 934 #if PY_MAJOR_VERSION < 3
 935                 FILE *fp = fdopen(evlist->pollfd.entries[i].fd, "r");
 936
 937                 if (fp == NULL)
 938                         goto free_list;
 939
 940                 file = PyFile_FromFile(fp, "perf", "r", NULL);
 941 #else
 942                 file = PyFile_FromFd(evlist->pollfd.entries[i].fd, "perf", "r", -1,
 943                                      NULL, NULL, NULL, 0);
 944 #endif
 945                 if (file == NULL)
 946                         goto free_list;
 947
 948                 if (PyList_Append(list, file) != 0) {
 949                         Py_DECREF(file);
 950                         goto free_list;
 951                 }
 952
 953                 Py_DECREF(file);
 954         }
 955
 956         return list;
 957 free_list:
 958         return PyErr_NoMemory();
 959 }
 960
 961
 962 static PyObject *pyrf_evlist__add(struct pyrf_evlist *pevlist,
 963                                   PyObject *args,
 964                                   PyObject *kwargs __maybe_unused)
 965 {
 966         struct perf_evlist *evlist = &pevlist->evlist;
 967         PyObject *pevsel;
 968         struct perf_evsel *evsel;
 969
 970         if (!PyArg_ParseTuple(args, "O", &pevsel))
 971                 return NULL;
 972
 973         Py_INCREF(pevsel);
 974         evsel = &((struct pyrf_evsel *)pevsel)->evsel;
 975         evsel->idx = evlist->nr_entries;
 976         perf_evlist__add(evlist, evsel);
 977
 978         return Py_BuildValue("i", evlist->nr_entries);
 979 }
 980
 981 static struct perf_mmap *get_md(struct perf_evlist *evlist, int cpu)
 982 {
 983         int i;
 984
 985         for (i = 0; i < evlist->nr_mmaps; i++) {
 986                 struct perf_mmap *md = &evlist->mmap[i];
 987
 988                 if (md->cpu == cpu)
 989                         return md;
 990         }
 991
 992         return NULL;
 993 }
 994
 995 static PyObject *pyrf_evlist__read_on_cpu(struct pyrf_evlist *pevlist,
 996                                           PyObject *args, PyObject *kwargs)
 997 {
 998         struct perf_evlist *evlist = &pevlist->evlist;
 999         union perf_event *event;
1000         int sample_id_all = 1, cpu;
1001         static char *kwlist[] = { "cpu", "sample_id_all", NULL };
1002         struct perf_mmap *md;
1003         int err;
1004
1005         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "i|i", kwlist,
1006                                          &cpu, &sample_id_all))
1007                 return NULL;
1008
1009         md = get_md(evlist, cpu);
1010         if (!md)
1011                 return NULL;
1012
1013         if (perf_mmap__read_init(md) < 0)
1014                 goto end;
1015
1016         event = perf_mmap__read_event(md);
1017         if (event != NULL) {
1018                 PyObject *pyevent = pyrf_event__new(event);
1019                 struct pyrf_event *pevent = (struct pyrf_event *)pyevent;
1020                 struct perf_evsel *evsel;
1021
1022                 if (pyevent == NULL)
1023                         return PyErr_NoMemory();
1024
1025                 evsel = perf_evlist__event2evsel(evlist, event);
1026                 if (!evsel) {
1027                         Py_INCREF(Py_None);
1028                         return Py_None;
1029                 }
1030
1031                 pevent->evsel = evsel;
1032
1033                 err = perf_evsel__parse_sample(evsel, event, &pevent->sample);
1034
1035                 /* Consume the even only after we parsed it out. */
1036                 perf_mmap__consume(md);
1037
1038                 if (err)
1039                         return PyErr_Format(PyExc_OSError,
1040                                             "perf: can't parse sample, err=%d", err);
1041                 return pyevent;
1042         }
1043 end:
1044         Py_INCREF(Py_None);
1045         return Py_None;
1046 }
1047
1048 static PyObject *pyrf_evlist__open(struct pyrf_evlist *pevlist,
1049                                    PyObject *args, PyObject *kwargs)
1050 {
1051         struct perf_evlist *evlist = &pevlist->evlist;
1052         int group = 0;
1053         static char *kwlist[] = { "group", NULL };
1054
1055         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|OOii", kwlist, &group))
1056                 return NULL;
1057
1058         if (group)
1059                 perf_evlist__set_leader(evlist);
1060
1061         if (perf_evlist__open(evlist) < 0) {
1062                 PyErr_SetFromErrno(PyExc_OSError);
1063                 return NULL;
1064         }
1065
1066         Py_INCREF(Py_None);
1067         return Py_None;
1068 }
1069
1070 static PyMethodDef pyrf_evlist__methods[] = {
1071         {
1072                 .ml_name  = "mmap",
1073                 .ml_meth  = (PyCFunction)pyrf_evlist__mmap,
1074                 .ml_flags = METH_VARARGS | METH_KEYWORDS,
1075                 .ml_doc   = PyDoc_STR("mmap the file descriptor table.")
1076         },
1077         {
1078                 .ml_name  = "open",
1079                 .ml_meth  = (PyCFunction)pyrf_evlist__open,
1080                 .ml_flags = METH_VARARGS | METH_KEYWORDS,
1081                 .ml_doc   = PyDoc_STR("open the file descriptors.")
1082         },
1083         {
1084                 .ml_name  = "poll",
1085                 .ml_meth  = (PyCFunction)pyrf_evlist__poll,
1086                 .ml_flags = METH_VARARGS | METH_KEYWORDS,
1087                 .ml_doc   = PyDoc_STR("poll the file descriptor table.")
1088         },
1089         {
1090                 .ml_name  = "get_pollfd",
1091                 .ml_meth  = (PyCFunction)pyrf_evlist__get_pollfd,
1092                 .ml_flags = METH_VARARGS | METH_KEYWORDS,
1093                 .ml_doc   = PyDoc_STR("get the poll file descriptor table.")
1094         },
1095         {
1096                 .ml_name  = "add",
1097                 .ml_meth  = (PyCFunction)pyrf_evlist__add,
1098                 .ml_flags = METH_VARARGS | METH_KEYWORDS,
1099                 .ml_doc   = PyDoc_STR("adds an event selector to the list.")
1100         },
1101         {
1102                 .ml_name  = "read_on_cpu",
1103                 .ml_meth  = (PyCFunction)pyrf_evlist__read_on_cpu,
1104                 .ml_flags = METH_VARARGS | METH_KEYWORDS,
1105                 .ml_doc   = PyDoc_STR("reads an event.")
1106         },
1107         { .ml_name = NULL, }
1108 };
1109
1110 static Py_ssize_t pyrf_evlist__length(PyObject *obj)
1111 {
1112         struct pyrf_evlist *pevlist = (void *)obj;
1113
1114         return pevlist->evlist.nr_entries;
1115 }
1116
1117 static PyObject *pyrf_evlist__item(PyObject *obj, Py_ssize_t i)
1118 {
1119         struct pyrf_evlist *pevlist = (void *)obj;
1120         struct perf_evsel *pos;
1121
1122         if (i >= pevlist->evlist.nr_entries)
1123                 return NULL;
1124
1125         evlist__for_each_entry(&pevlist->evlist, pos) {
1126                 if (i-- == 0)
1127                         break;
1128         }
1129
1130         return Py_BuildValue("O", container_of(pos, struct pyrf_evsel, evsel));
1131 }
1132
1133 static PySequenceMethods pyrf_evlist__sequence_methods = {
1134         .sq_length = pyrf_evlist__length,
1135         .sq_item   = pyrf_evlist__item,
1136 };
1137
1138 static char pyrf_evlist__doc[] = PyDoc_STR("perf event selector list object.");
1139
1140 static PyTypeObject pyrf_evlist__type = {
1141         PyVarObject_HEAD_INIT(NULL, 0)
1142         .tp_name        = "perf.evlist",
1143         .tp_basicsize   = sizeof(struct pyrf_evlist),
1144         .tp_dealloc     = (destructor)pyrf_evlist__delete,
1145         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
1146         .tp_as_sequence = &pyrf_evlist__sequence_methods,
1147         .tp_doc         = pyrf_evlist__doc,
1148         .tp_methods     = pyrf_evlist__methods,
1149         .tp_init        = (initproc)pyrf_evlist__init,
1150 };
1151
1152 static int pyrf_evlist__setup_types(void)
1153 {
1154         pyrf_evlist__type.tp_new = PyType_GenericNew;
1155         return PyType_Ready(&pyrf_evlist__type);
1156 }
1157
1158 #define PERF_CONST(name) { #name, PERF_##name }
1159
1160 static struct {
1161         const char *name;
1162         int         value;
1163 } perf__constants[] = {
1164         PERF_CONST(TYPE_HARDWARE),
1165         PERF_CONST(TYPE_SOFTWARE),
1166         PERF_CONST(TYPE_TRACEPOINT),
1167         PERF_CONST(TYPE_HW_CACHE),
1168         PERF_CONST(TYPE_RAW),
1169         PERF_CONST(TYPE_BREAKPOINT),
1170
1171         PERF_CONST(COUNT_HW_CPU_CYCLES),
1172         PERF_CONST(COUNT_HW_INSTRUCTIONS),
1173         PERF_CONST(COUNT_HW_CACHE_REFERENCES),
1174         PERF_CONST(COUNT_HW_CACHE_MISSES),
1175         PERF_CONST(COUNT_HW_BRANCH_INSTRUCTIONS),
1176         PERF_CONST(COUNT_HW_BRANCH_MISSES),
1177         PERF_CONST(COUNT_HW_BUS_CYCLES),
1178         PERF_CONST(COUNT_HW_CACHE_L1D),
1179         PERF_CONST(COUNT_HW_CACHE_L1I),
1180         PERF_CONST(COUNT_HW_CACHE_LL),
1181         PERF_CONST(COUNT_HW_CACHE_DTLB),
1182         PERF_CONST(COUNT_HW_CACHE_ITLB),
1183         PERF_CONST(COUNT_HW_CACHE_BPU),
1184         PERF_CONST(COUNT_HW_CACHE_OP_READ),
1185         PERF_CONST(COUNT_HW_CACHE_OP_WRITE),
1186         PERF_CONST(COUNT_HW_CACHE_OP_PREFETCH),
1187         PERF_CONST(COUNT_HW_CACHE_RESULT_ACCESS),
1188         PERF_CONST(COUNT_HW_CACHE_RESULT_MISS),
1189
1190         PERF_CONST(COUNT_HW_STALLED_CYCLES_FRONTEND),
1191         PERF_CONST(COUNT_HW_STALLED_CYCLES_BACKEND),
1192
1193         PERF_CONST(COUNT_SW_CPU_CLOCK),
1194         PERF_CONST(COUNT_SW_TASK_CLOCK),
1195         PERF_CONST(COUNT_SW_PAGE_FAULTS),
1196         PERF_CONST(COUNT_SW_CONTEXT_SWITCHES),
1197         PERF_CONST(COUNT_SW_CPU_MIGRATIONS),
1198         PERF_CONST(COUNT_SW_PAGE_FAULTS_MIN),
1199         PERF_CONST(COUNT_SW_PAGE_FAULTS_MAJ),
1200         PERF_CONST(COUNT_SW_ALIGNMENT_FAULTS),
1201         PERF_CONST(COUNT_SW_EMULATION_FAULTS),
1202         PERF_CONST(COUNT_SW_DUMMY),
1203
1204         PERF_CONST(SAMPLE_IP),
1205         PERF_CONST(SAMPLE_TID),
1206         PERF_CONST(SAMPLE_TIME),
1207         PERF_CONST(SAMPLE_ADDR),
1208         PERF_CONST(SAMPLE_READ),
1209         PERF_CONST(SAMPLE_CALLCHAIN),
1210         PERF_CONST(SAMPLE_ID),
1211         PERF_CONST(SAMPLE_CPU),
1212         PERF_CONST(SAMPLE_PERIOD),
1213         PERF_CONST(SAMPLE_STREAM_ID),
1214         PERF_CONST(SAMPLE_RAW),
1215
1216         PERF_CONST(FORMAT_TOTAL_TIME_ENABLED),
1217         PERF_CONST(FORMAT_TOTAL_TIME_RUNNING),
1218         PERF_CONST(FORMAT_ID),
1219         PERF_CONST(FORMAT_GROUP),
1220
1221         PERF_CONST(RECORD_MMAP),
1222         PERF_CONST(RECORD_LOST),
1223         PERF_CONST(RECORD_COMM),
1224         PERF_CONST(RECORD_EXIT),
1225         PERF_CONST(RECORD_THROTTLE),
1226         PERF_CONST(RECORD_UNTHROTTLE),
1227         PERF_CONST(RECORD_FORK),
1228         PERF_CONST(RECORD_READ),
1229         PERF_CONST(RECORD_SAMPLE),
1230         PERF_CONST(RECORD_MMAP2),
1231         PERF_CONST(RECORD_AUX),
1232         PERF_CONST(RECORD_ITRACE_START),
1233         PERF_CONST(RECORD_LOST_SAMPLES),
1234         PERF_CONST(RECORD_SWITCH),
1235         PERF_CONST(RECORD_SWITCH_CPU_WIDE),
1236
1237         PERF_CONST(RECORD_MISC_SWITCH_OUT),
1238         { .name = NULL, },
1239 };
1240
1241 static PyObject *pyrf__tracepoint(struct pyrf_evsel *pevsel,
1242                                   PyObject *args, PyObject *kwargs)
1243 {
1244         struct event_format *tp_format;
1245         static char *kwlist[] = { "sys", "name", NULL };
1246         char *sys  = NULL;
1247         char *name = NULL;
1248
1249         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|ss", kwlist,
1250                                          &sys, &name))
1251                 return NULL;
1252
1253         tp_format = trace_event__tp_format(sys, name);
1254         if (IS_ERR(tp_format))
1255                 return _PyLong_FromLong(-1);
1256
1257         return _PyLong_FromLong(tp_format->id);
1258 }
1259
1260 static PyMethodDef perf__methods[] = {
1261         {
1262                 .ml_name  = "tracepoint",
1263                 .ml_meth  = (PyCFunction) pyrf__tracepoint,
1264                 .ml_flags = METH_VARARGS | METH_KEYWORDS,
1265                 .ml_doc   = PyDoc_STR("Get tracepoint config.")
1266         },
1267         { .ml_name = NULL, }
1268 };
1269
1270 #if PY_MAJOR_VERSION < 3
1271 PyMODINIT_FUNC initperf(void)
1272 #else
1273 PyMODINIT_FUNC PyInit_perf(void)
1274 #endif
1275 {
1276         PyObject *obj;
1277         int i;
1278         PyObject *dict;
1279 #if PY_MAJOR_VERSION < 3
1280         PyObject *module = Py_InitModule("perf", perf__methods);
1281 #else
1282         static struct PyModuleDef moduledef = {
1283                 PyModuleDef_HEAD_INIT,
1284                 "perf",                 /* m_name */
1285                 "",                     /* m_doc */
1286                 -1,                     /* m_size */
1287                 perf__methods,          /* m_methods */
1288                 NULL,                   /* m_reload */
1289                 NULL,                   /* m_traverse */
1290                 NULL,                   /* m_clear */
1291                 NULL,                   /* m_free */
1292         };
1293         PyObject *module = PyModule_Create(&moduledef);
1294 #endif
1295
1296         if (module == NULL ||
1297             pyrf_event__setup_types() < 0 ||
1298             pyrf_evlist__setup_types() < 0 ||
1299             pyrf_evsel__setup_types() < 0 ||
1300             pyrf_thread_map__setup_types() < 0 ||
1301             pyrf_cpu_map__setup_types() < 0)
1302 #if PY_MAJOR_VERSION < 3
1303                 return;
1304 #else
1305                 return module;
1306 #endif
1307
1308         /* The page_size is placed in util object. */
1309         page_size = sysconf(_SC_PAGE_SIZE);
1310
1311         Py_INCREF(&pyrf_evlist__type);
1312         PyModule_AddObject(module, "evlist", (PyObject*)&pyrf_evlist__type);
1313
1314         Py_INCREF(&pyrf_evsel__type);
1315         PyModule_AddObject(module, "evsel", (PyObject*)&pyrf_evsel__type);
1316
1317         Py_INCREF(&pyrf_mmap_event__type);
1318         PyModule_AddObject(module, "mmap_event", (PyObject *)&pyrf_mmap_event__type);
1319
1320         Py_INCREF(&pyrf_lost_event__type);
1321         PyModule_AddObject(module, "lost_event", (PyObject *)&pyrf_lost_event__type);
1322
1323         Py_INCREF(&pyrf_comm_event__type);
1324         PyModule_AddObject(module, "comm_event", (PyObject *)&pyrf_comm_event__type);
1325
1326         Py_INCREF(&pyrf_task_event__type);
1327         PyModule_AddObject(module, "task_event", (PyObject *)&pyrf_task_event__type);
1328
1329         Py_INCREF(&pyrf_throttle_event__type);
1330         PyModule_AddObject(module, "throttle_event", (PyObject *)&pyrf_throttle_event__type);
1331
1332         Py_INCREF(&pyrf_task_event__type);
1333         PyModule_AddObject(module, "task_event", (PyObject *)&pyrf_task_event__type);
1334
1335         Py_INCREF(&pyrf_read_event__type);
1336         PyModule_AddObject(module, "read_event", (PyObject *)&pyrf_read_event__type);
1337
1338         Py_INCREF(&pyrf_sample_event__type);
1339         PyModule_AddObject(module, "sample_event", (PyObject *)&pyrf_sample_event__type);
1340
1341         Py_INCREF(&pyrf_context_switch_event__type);
1342         PyModule_AddObject(module, "switch_event", (PyObject *)&pyrf_context_switch_event__type);
1343
1344         Py_INCREF(&pyrf_thread_map__type);
1345         PyModule_AddObject(module, "thread_map", (PyObject*)&pyrf_thread_map__type);
1346
1347         Py_INCREF(&pyrf_cpu_map__type);
1348         PyModule_AddObject(module, "cpu_map", (PyObject*)&pyrf_cpu_map__type);
1349
1350         dict = PyModule_GetDict(module);
1351         if (dict == NULL)
1352                 goto error;
1353
1354         for (i = 0; perf__constants[i].name != NULL; i++) {
1355                 obj = _PyLong_FromLong(perf__constants[i].value);
1356                 if (obj == NULL)
1357                         goto error;
1358                 PyDict_SetItemString(dict, perf__constants[i].name, obj);
1359                 Py_DECREF(obj);
1360         }
1361
1362 error:
1363         if (PyErr_Occurred())
1364                 PyErr_SetString(PyExc_ImportError, "perf: Init failed!");
1365 #if PY_MAJOR_VERSION >= 3
1366         return module;
1367 #endif
1368 }
1369
1370 /*
1371  * Dummy, to avoid dragging all the test_attr infrastructure in the python
1372  * binding.
1373  */
1374 void test_attr__open(struct perf_event_attr *attr, pid_t pid, int cpu,
1375                      int fd, int group_fd, unsigned long flags)
1376 {
1377 }