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 <perf/cpumap.h>
   8 #include "evlist.h"
   9 #include "callchain.h"
  10 #include "evsel.h"
  11 #include "event.h"
  12 #include "cpumap.h"
  13 #include "print_binary.h"
  14 #include "thread_map.h"
  15 #include "mmap.h"
  16 #include "util.h"
  17
  18 #if PY_MAJOR_VERSION < 3
  19 #define _PyUnicode_FromString(arg) \
  20   PyString_FromString(arg)
  21 #define _PyUnicode_AsString(arg) \
  22   PyString_AsString(arg)
  23 #define _PyUnicode_FromFormat(...) \
  24   PyString_FromFormat(__VA_ARGS__)
  25 #define _PyLong_FromLong(arg) \
  26   PyInt_FromLong(arg)
  27
  28 #else
  29
  30 #define _PyUnicode_FromString(arg) \
  31   PyUnicode_FromString(arg)
  32 #define _PyUnicode_FromFormat(...) \
  33   PyUnicode_FromFormat(__VA_ARGS__)
  34 #define _PyLong_FromLong(arg) \
  35   PyLong_FromLong(arg)
  36 #endif
  37
  38 #ifndef Py_TYPE
  39 #define Py_TYPE(ob) (((PyObject*)(ob))->ob_type)
  40 #endif
  41
  42 /*
  43  * Provide these two so that we don't have to link against callchain.c and
  44  * start dragging hist.c, etc.
  45  */
  46 struct callchain_param callchain_param;
  47
  48 int parse_callchain_record(const char *arg __maybe_unused,
  49                            struct callchain_param *param __maybe_unused)
  50 {
  51         return 0;
  52 }
  53
  54 /*
  55  * Support debug printing even though util/debug.c is not linked.  That means
  56  * implementing 'verbose' and 'eprintf'.
  57  */
  58 int verbose;
  59
  60 int eprintf(int level, int var, const char *fmt, ...)
  61 {
  62         va_list args;
  63         int ret = 0;
  64
  65         if (var >= level) {
  66                 va_start(args, fmt);
  67                 ret = vfprintf(stderr, fmt, args);
  68                 va_end(args);
  69         }
  70
  71         return ret;
  72 }
  73
  74 /* Define PyVarObject_HEAD_INIT for python 2.5 */
  75 #ifndef PyVarObject_HEAD_INIT
  76 # define PyVarObject_HEAD_INIT(type, size) PyObject_HEAD_INIT(type) size,
  77 #endif
  78
  79 #if PY_MAJOR_VERSION < 3
  80 PyMODINIT_FUNC initperf(void);
  81 #else
  82 PyMODINIT_FUNC PyInit_perf(void);
  83 #endif
  84
  85 #define member_def(type, member, ptype, help) \
  86         { #member, ptype, \
  87           offsetof(struct pyrf_event, event) + offsetof(struct type, member), \
  88           0, help }
  89
  90 #define sample_member_def(name, member, ptype, help) \
  91         { #name, ptype, \
  92           offsetof(struct pyrf_event, sample) + offsetof(struct perf_sample, member), \
  93           0, help }
  94
  95 struct pyrf_event {
  96         PyObject_HEAD
  97         struct evsel *evsel;
  98         struct perf_sample sample;
  99         union perf_event   event;
 100 };
 101
 102 #define sample_members \
 103         sample_member_def(sample_ip, ip, T_ULONGLONG, "event type"),                     \
 104         sample_member_def(sample_pid, pid, T_INT, "event pid"),                  \
 105         sample_member_def(sample_tid, tid, T_INT, "event tid"),                  \
 106         sample_member_def(sample_time, time, T_ULONGLONG, "event timestamp"),            \
 107         sample_member_def(sample_addr, addr, T_ULONGLONG, "event addr"),                 \
 108         sample_member_def(sample_id, id, T_ULONGLONG, "event id"),                       \
 109         sample_member_def(sample_stream_id, stream_id, T_ULONGLONG, "event stream id"), \
 110         sample_member_def(sample_period, period, T_ULONGLONG, "event period"),           \
 111         sample_member_def(sample_cpu, cpu, T_UINT, "event cpu"),
 112
 113 static char pyrf_mmap_event__doc[] = PyDoc_STR("perf mmap event object.");
 114
 115 static PyMemberDef pyrf_mmap_event__members[] = {
 116         sample_members
 117         member_def(perf_event_header, type, T_UINT, "event type"),
 118         member_def(perf_event_header, misc, T_UINT, "event misc"),
 119         member_def(perf_record_mmap, pid, T_UINT, "event pid"),
 120         member_def(perf_record_mmap, tid, T_UINT, "event tid"),
 121         member_def(perf_record_mmap, start, T_ULONGLONG, "start of the map"),
 122         member_def(perf_record_mmap, len, T_ULONGLONG, "map length"),
 123         member_def(perf_record_mmap, pgoff, T_ULONGLONG, "page offset"),
 124         member_def(perf_record_mmap, filename, T_STRING_INPLACE, "backing store"),
 125         { .name = NULL, },
 126 };
 127
 128 static PyObject *pyrf_mmap_event__repr(struct pyrf_event *pevent)
 129 {
 130         PyObject *ret;
 131         char *s;
 132
 133         if (asprintf(&s, "{ type: mmap, pid: %u, tid: %u, start: %#" PRI_lx64 ", "
 134                          "length: %#" PRI_lx64 ", offset: %#" PRI_lx64 ", "
 135                          "filename: %s }",
 136                      pevent->event.mmap.pid, pevent->event.mmap.tid,
 137                      pevent->event.mmap.start, pevent->event.mmap.len,
 138                      pevent->event.mmap.pgoff, pevent->event.mmap.filename) < 0) {
 139                 ret = PyErr_NoMemory();
 140         } else {
 141                 ret = _PyUnicode_FromString(s);
 142                 free(s);
 143         }
 144         return ret;
 145 }
 146
 147 static PyTypeObject pyrf_mmap_event__type = {
 148         PyVarObject_HEAD_INIT(NULL, 0)
 149         .tp_name        = "perf.mmap_event",
 150         .tp_basicsize   = sizeof(struct pyrf_event),
 151         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 152         .tp_doc         = pyrf_mmap_event__doc,
 153         .tp_members     = pyrf_mmap_event__members,
 154         .tp_repr        = (reprfunc)pyrf_mmap_event__repr,
 155 };
 156
 157 static char pyrf_task_event__doc[] = PyDoc_STR("perf task (fork/exit) event object.");
 158
 159 static PyMemberDef pyrf_task_event__members[] = {
 160         sample_members
 161         member_def(perf_event_header, type, T_UINT, "event type"),
 162         member_def(perf_record_fork, pid, T_UINT, "event pid"),
 163         member_def(perf_record_fork, ppid, T_UINT, "event ppid"),
 164         member_def(perf_record_fork, tid, T_UINT, "event tid"),
 165         member_def(perf_record_fork, ptid, T_UINT, "event ptid"),
 166         member_def(perf_record_fork, time, T_ULONGLONG, "timestamp"),
 167         { .name = NULL, },
 168 };
 169
 170 static PyObject *pyrf_task_event__repr(struct pyrf_event *pevent)
 171 {
 172         return _PyUnicode_FromFormat("{ type: %s, pid: %u, ppid: %u, tid: %u, "
 173                                    "ptid: %u, time: %" PRI_lu64 "}",
 174                                    pevent->event.header.type == PERF_RECORD_FORK ? "fork" : "exit",
 175                                    pevent->event.fork.pid,
 176                                    pevent->event.fork.ppid,
 177                                    pevent->event.fork.tid,
 178                                    pevent->event.fork.ptid,
 179                                    pevent->event.fork.time);
 180 }
 181
 182 static PyTypeObject pyrf_task_event__type = {
 183         PyVarObject_HEAD_INIT(NULL, 0)
 184         .tp_name        = "perf.task_event",
 185         .tp_basicsize   = sizeof(struct pyrf_event),
 186         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 187         .tp_doc         = pyrf_task_event__doc,
 188         .tp_members     = pyrf_task_event__members,
 189         .tp_repr        = (reprfunc)pyrf_task_event__repr,
 190 };
 191
 192 static char pyrf_comm_event__doc[] = PyDoc_STR("perf comm event object.");
 193
 194 static PyMemberDef pyrf_comm_event__members[] = {
 195         sample_members
 196         member_def(perf_event_header, type, T_UINT, "event type"),
 197         member_def(perf_record_comm, pid, T_UINT, "event pid"),
 198         member_def(perf_record_comm, tid, T_UINT, "event tid"),
 199         member_def(perf_record_comm, comm, T_STRING_INPLACE, "process name"),
 200         { .name = NULL, },
 201 };
 202
 203 static PyObject *pyrf_comm_event__repr(struct pyrf_event *pevent)
 204 {
 205         return _PyUnicode_FromFormat("{ type: comm, pid: %u, tid: %u, comm: %s }",
 206                                    pevent->event.comm.pid,
 207                                    pevent->event.comm.tid,
 208                                    pevent->event.comm.comm);
 209 }
 210
 211 static PyTypeObject pyrf_comm_event__type = {
 212         PyVarObject_HEAD_INIT(NULL, 0)
 213         .tp_name        = "perf.comm_event",
 214         .tp_basicsize   = sizeof(struct pyrf_event),
 215         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 216         .tp_doc         = pyrf_comm_event__doc,
 217         .tp_members     = pyrf_comm_event__members,
 218         .tp_repr        = (reprfunc)pyrf_comm_event__repr,
 219 };
 220
 221 static char pyrf_throttle_event__doc[] = PyDoc_STR("perf throttle event object.");
 222
 223 static PyMemberDef pyrf_throttle_event__members[] = {
 224         sample_members
 225         member_def(perf_event_header, type, T_UINT, "event type"),
 226         member_def(perf_record_throttle, time, T_ULONGLONG, "timestamp"),
 227         member_def(perf_record_throttle, id, T_ULONGLONG, "event id"),
 228         member_def(perf_record_throttle, stream_id, T_ULONGLONG, "event stream id"),
 229         { .name = NULL, },
 230 };
 231
 232 static PyObject *pyrf_throttle_event__repr(struct pyrf_event *pevent)
 233 {
 234         struct perf_record_throttle *te = (struct perf_record_throttle *)(&pevent->event.header + 1);
 235
 236         return _PyUnicode_FromFormat("{ type: %sthrottle, time: %" PRI_lu64 ", id: %" PRI_lu64
 237                                    ", stream_id: %" PRI_lu64 " }",
 238                                    pevent->event.header.type == PERF_RECORD_THROTTLE ? "" : "un",
 239                                    te->time, te->id, te->stream_id);
 240 }
 241
 242 static PyTypeObject pyrf_throttle_event__type = {
 243         PyVarObject_HEAD_INIT(NULL, 0)
 244         .tp_name        = "perf.throttle_event",
 245         .tp_basicsize   = sizeof(struct pyrf_event),
 246         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 247         .tp_doc         = pyrf_throttle_event__doc,
 248         .tp_members     = pyrf_throttle_event__members,
 249         .tp_repr        = (reprfunc)pyrf_throttle_event__repr,
 250 };
 251
 252 static char pyrf_lost_event__doc[] = PyDoc_STR("perf lost event object.");
 253
 254 static PyMemberDef pyrf_lost_event__members[] = {
 255         sample_members
 256         member_def(perf_record_lost, id, T_ULONGLONG, "event id"),
 257         member_def(perf_record_lost, lost, T_ULONGLONG, "number of lost events"),
 258         { .name = NULL, },
 259 };
 260
 261 static PyObject *pyrf_lost_event__repr(struct pyrf_event *pevent)
 262 {
 263         PyObject *ret;
 264         char *s;
 265
 266         if (asprintf(&s, "{ type: lost, id: %#" PRI_lx64 ", "
 267                          "lost: %#" PRI_lx64 " }",
 268                      pevent->event.lost.id, pevent->event.lost.lost) < 0) {
 269                 ret = PyErr_NoMemory();
 270         } else {
 271                 ret = _PyUnicode_FromString(s);
 272                 free(s);
 273         }
 274         return ret;
 275 }
 276
 277 static PyTypeObject pyrf_lost_event__type = {
 278         PyVarObject_HEAD_INIT(NULL, 0)
 279         .tp_name        = "perf.lost_event",
 280         .tp_basicsize   = sizeof(struct pyrf_event),
 281         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 282         .tp_doc         = pyrf_lost_event__doc,
 283         .tp_members     = pyrf_lost_event__members,
 284         .tp_repr        = (reprfunc)pyrf_lost_event__repr,
 285 };
 286
 287 static char pyrf_read_event__doc[] = PyDoc_STR("perf read event object.");
 288
 289 static PyMemberDef pyrf_read_event__members[] = {
 290         sample_members
 291         member_def(perf_record_read, pid, T_UINT, "event pid"),
 292         member_def(perf_record_read, tid, T_UINT, "event tid"),
 293         { .name = NULL, },
 294 };
 295
 296 static PyObject *pyrf_read_event__repr(struct pyrf_event *pevent)
 297 {
 298         return _PyUnicode_FromFormat("{ type: read, pid: %u, tid: %u }",
 299                                    pevent->event.read.pid,
 300                                    pevent->event.read.tid);
 301         /*
 302          * FIXME: return the array of read values,
 303          * making this method useful ;-)
 304          */
 305 }
 306
 307 static PyTypeObject pyrf_read_event__type = {
 308         PyVarObject_HEAD_INIT(NULL, 0)
 309         .tp_name        = "perf.read_event",
 310         .tp_basicsize   = sizeof(struct pyrf_event),
 311         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 312         .tp_doc         = pyrf_read_event__doc,
 313         .tp_members     = pyrf_read_event__members,
 314         .tp_repr        = (reprfunc)pyrf_read_event__repr,
 315 };
 316
 317 static char pyrf_sample_event__doc[] = PyDoc_STR("perf sample event object.");
 318
 319 static PyMemberDef pyrf_sample_event__members[] = {
 320         sample_members
 321         member_def(perf_event_header, type, T_UINT, "event type"),
 322         { .name = NULL, },
 323 };
 324
 325 static PyObject *pyrf_sample_event__repr(struct pyrf_event *pevent)
 326 {
 327         PyObject *ret;
 328         char *s;
 329
 330         if (asprintf(&s, "{ type: sample }") < 0) {
 331                 ret = PyErr_NoMemory();
 332         } else {
 333                 ret = _PyUnicode_FromString(s);
 334                 free(s);
 335         }
 336         return ret;
 337 }
 338
 339 static bool is_tracepoint(struct pyrf_event *pevent)
 340 {
 341         return pevent->evsel->core.attr.type == PERF_TYPE_TRACEPOINT;
 342 }
 343
 344 static PyObject*
 345 tracepoint_field(struct pyrf_event *pe, struct tep_format_field *field)
 346 {
 347         struct tep_handle *pevent = field->event->tep;
 348         void *data = pe->sample.raw_data;
 349         PyObject *ret = NULL;
 350         unsigned long long val;
 351         unsigned int offset, len;
 352
 353         if (field->flags & TEP_FIELD_IS_ARRAY) {
 354                 offset = field->offset;
 355                 len    = field->size;
 356                 if (field->flags & TEP_FIELD_IS_DYNAMIC) {
 357                         val     = tep_read_number(pevent, data + offset, len);
 358                         offset  = val;
 359                         len     = offset >> 16;
 360                         offset &= 0xffff;
 361                 }
 362                 if (field->flags & TEP_FIELD_IS_STRING &&
 363                     is_printable_array(data + offset, len)) {
 364                         ret = _PyUnicode_FromString((char *)data + offset);
 365                 } else {
 366                         ret = PyByteArray_FromStringAndSize((const char *) data + offset, len);
 367                         field->flags &= ~TEP_FIELD_IS_STRING;
 368                 }
 369         } else {
 370                 val = tep_read_number(pevent, data + field->offset,
 371                                       field->size);
 372                 if (field->flags & TEP_FIELD_IS_POINTER)
 373                         ret = PyLong_FromUnsignedLong((unsigned long) val);
 374                 else if (field->flags & TEP_FIELD_IS_SIGNED)
 375                         ret = PyLong_FromLong((long) val);
 376                 else
 377                         ret = PyLong_FromUnsignedLong((unsigned long) val);
 378         }
 379
 380         return ret;
 381 }
 382
 383 static PyObject*
 384 get_tracepoint_field(struct pyrf_event *pevent, PyObject *attr_name)
 385 {
 386         const char *str = _PyUnicode_AsString(PyObject_Str(attr_name));
 387         struct evsel *evsel = pevent->evsel;
 388         struct tep_format_field *field;
 389
 390         if (!evsel->tp_format) {
 391                 struct tep_event *tp_format;
 392
 393                 tp_format = trace_event__tp_format_id(evsel->core.attr.config);
 394                 if (!tp_format)
 395                         return NULL;
 396
 397                 evsel->tp_format = tp_format;
 398         }
 399
 400         field = tep_find_any_field(evsel->tp_format, str);
 401         if (!field)
 402                 return NULL;
 403
 404         return tracepoint_field(pevent, field);
 405 }
 406
 407 static PyObject*
 408 pyrf_sample_event__getattro(struct pyrf_event *pevent, PyObject *attr_name)
 409 {
 410         PyObject *obj = NULL;
 411
 412         if (is_tracepoint(pevent))
 413                 obj = get_tracepoint_field(pevent, attr_name);
 414
 415         return obj ?: PyObject_GenericGetAttr((PyObject *) pevent, attr_name);
 416 }
 417
 418 static PyTypeObject pyrf_sample_event__type = {
 419         PyVarObject_HEAD_INIT(NULL, 0)
 420         .tp_name        = "perf.sample_event",
 421         .tp_basicsize   = sizeof(struct pyrf_event),
 422         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 423         .tp_doc         = pyrf_sample_event__doc,
 424         .tp_members     = pyrf_sample_event__members,
 425         .tp_repr        = (reprfunc)pyrf_sample_event__repr,
 426         .tp_getattro    = (getattrofunc) pyrf_sample_event__getattro,
 427 };
 428
 429 static char pyrf_context_switch_event__doc[] = PyDoc_STR("perf context_switch event object.");
 430
 431 static PyMemberDef pyrf_context_switch_event__members[] = {
 432         sample_members
 433         member_def(perf_event_header, type, T_UINT, "event type"),
 434         member_def(perf_record_switch, next_prev_pid, T_UINT, "next/prev pid"),
 435         member_def(perf_record_switch, next_prev_tid, T_UINT, "next/prev tid"),
 436         { .name = NULL, },
 437 };
 438
 439 static PyObject *pyrf_context_switch_event__repr(struct pyrf_event *pevent)
 440 {
 441         PyObject *ret;
 442         char *s;
 443
 444         if (asprintf(&s, "{ type: context_switch, next_prev_pid: %u, next_prev_tid: %u, switch_out: %u }",
 445                      pevent->event.context_switch.next_prev_pid,
 446                      pevent->event.context_switch.next_prev_tid,
 447                      !!(pevent->event.header.misc & PERF_RECORD_MISC_SWITCH_OUT)) < 0) {
 448                 ret = PyErr_NoMemory();
 449         } else {
 450                 ret = _PyUnicode_FromString(s);
 451                 free(s);
 452         }
 453         return ret;
 454 }
 455
 456 static PyTypeObject pyrf_context_switch_event__type = {
 457         PyVarObject_HEAD_INIT(NULL, 0)
 458         .tp_name        = "perf.context_switch_event",
 459         .tp_basicsize   = sizeof(struct pyrf_event),
 460         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 461         .tp_doc         = pyrf_context_switch_event__doc,
 462         .tp_members     = pyrf_context_switch_event__members,
 463         .tp_repr        = (reprfunc)pyrf_context_switch_event__repr,
 464 };
 465
 466 static int pyrf_event__setup_types(void)
 467 {
 468         int err;
 469         pyrf_mmap_event__type.tp_new =
 470         pyrf_task_event__type.tp_new =
 471         pyrf_comm_event__type.tp_new =
 472         pyrf_lost_event__type.tp_new =
 473         pyrf_read_event__type.tp_new =
 474         pyrf_sample_event__type.tp_new =
 475         pyrf_context_switch_event__type.tp_new =
 476         pyrf_throttle_event__type.tp_new = PyType_GenericNew;
 477         err = PyType_Ready(&pyrf_mmap_event__type);
 478         if (err < 0)
 479                 goto out;
 480         err = PyType_Ready(&pyrf_lost_event__type);
 481         if (err < 0)
 482                 goto out;
 483         err = PyType_Ready(&pyrf_task_event__type);
 484         if (err < 0)
 485                 goto out;
 486         err = PyType_Ready(&pyrf_comm_event__type);
 487         if (err < 0)
 488                 goto out;
 489         err = PyType_Ready(&pyrf_throttle_event__type);
 490         if (err < 0)
 491                 goto out;
 492         err = PyType_Ready(&pyrf_read_event__type);
 493         if (err < 0)
 494                 goto out;
 495         err = PyType_Ready(&pyrf_sample_event__type);
 496         if (err < 0)
 497                 goto out;
 498         err = PyType_Ready(&pyrf_context_switch_event__type);
 499         if (err < 0)
 500                 goto out;
 501 out:
 502         return err;
 503 }
 504
 505 static PyTypeObject *pyrf_event__type[] = {
 506         [PERF_RECORD_MMAP]       = &pyrf_mmap_event__type,
 507         [PERF_RECORD_LOST]       = &pyrf_lost_event__type,
 508         [PERF_RECORD_COMM]       = &pyrf_comm_event__type,
 509         [PERF_RECORD_EXIT]       = &pyrf_task_event__type,
 510         [PERF_RECORD_THROTTLE]   = &pyrf_throttle_event__type,
 511         [PERF_RECORD_UNTHROTTLE] = &pyrf_throttle_event__type,
 512         [PERF_RECORD_FORK]       = &pyrf_task_event__type,
 513         [PERF_RECORD_READ]       = &pyrf_read_event__type,
 514         [PERF_RECORD_SAMPLE]     = &pyrf_sample_event__type,
 515         [PERF_RECORD_SWITCH]     = &pyrf_context_switch_event__type,
 516         [PERF_RECORD_SWITCH_CPU_WIDE]  = &pyrf_context_switch_event__type,
 517 };
 518
 519 static PyObject *pyrf_event__new(union perf_event *event)
 520 {
 521         struct pyrf_event *pevent;
 522         PyTypeObject *ptype;
 523
 524         if ((event->header.type < PERF_RECORD_MMAP ||
 525              event->header.type > PERF_RECORD_SAMPLE) &&
 526             !(event->header.type == PERF_RECORD_SWITCH ||
 527               event->header.type == PERF_RECORD_SWITCH_CPU_WIDE))
 528                 return NULL;
 529
 530         ptype = pyrf_event__type[event->header.type];
 531         pevent = PyObject_New(struct pyrf_event, ptype);
 532         if (pevent != NULL)
 533                 memcpy(&pevent->event, event, event->header.size);
 534         return (PyObject *)pevent;
 535 }
 536
 537 struct pyrf_cpu_map {
 538         PyObject_HEAD
 539
 540         struct perf_cpu_map *cpus;
 541 };
 542
 543 static int pyrf_cpu_map__init(struct pyrf_cpu_map *pcpus,
 544                               PyObject *args, PyObject *kwargs)
 545 {
 546         static char *kwlist[] = { "cpustr", NULL };
 547         char *cpustr = NULL;
 548
 549         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|s",
 550                                          kwlist, &cpustr))
 551                 return -1;
 552
 553         pcpus->cpus = perf_cpu_map__new(cpustr);
 554         if (pcpus->cpus == NULL)
 555                 return -1;
 556         return 0;
 557 }
 558
 559 static void pyrf_cpu_map__delete(struct pyrf_cpu_map *pcpus)
 560 {
 561         perf_cpu_map__put(pcpus->cpus);
 562         Py_TYPE(pcpus)->tp_free((PyObject*)pcpus);
 563 }
 564
 565 static Py_ssize_t pyrf_cpu_map__length(PyObject *obj)
 566 {
 567         struct pyrf_cpu_map *pcpus = (void *)obj;
 568
 569         return pcpus->cpus->nr;
 570 }
 571
 572 static PyObject *pyrf_cpu_map__item(PyObject *obj, Py_ssize_t i)
 573 {
 574         struct pyrf_cpu_map *pcpus = (void *)obj;
 575
 576         if (i >= pcpus->cpus->nr)
 577                 return NULL;
 578
 579         return Py_BuildValue("i", pcpus->cpus->map[i]);
 580 }
 581
 582 static PySequenceMethods pyrf_cpu_map__sequence_methods = {
 583         .sq_length = pyrf_cpu_map__length,
 584         .sq_item   = pyrf_cpu_map__item,
 585 };
 586
 587 static char pyrf_cpu_map__doc[] = PyDoc_STR("cpu map object.");
 588
 589 static PyTypeObject pyrf_cpu_map__type = {
 590         PyVarObject_HEAD_INIT(NULL, 0)
 591         .tp_name        = "perf.cpu_map",
 592         .tp_basicsize   = sizeof(struct pyrf_cpu_map),
 593         .tp_dealloc     = (destructor)pyrf_cpu_map__delete,
 594         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 595         .tp_doc         = pyrf_cpu_map__doc,
 596         .tp_as_sequence = &pyrf_cpu_map__sequence_methods,
 597         .tp_init        = (initproc)pyrf_cpu_map__init,
 598 };
 599
 600 static int pyrf_cpu_map__setup_types(void)
 601 {
 602         pyrf_cpu_map__type.tp_new = PyType_GenericNew;
 603         return PyType_Ready(&pyrf_cpu_map__type);
 604 }
 605
 606 struct pyrf_thread_map {
 607         PyObject_HEAD
 608
 609         struct perf_thread_map *threads;
 610 };
 611
 612 static int pyrf_thread_map__init(struct pyrf_thread_map *pthreads,
 613                                  PyObject *args, PyObject *kwargs)
 614 {
 615         static char *kwlist[] = { "pid", "tid", "uid", NULL };
 616         int pid = -1, tid = -1, uid = UINT_MAX;
 617
 618         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|iii",
 619                                          kwlist, &pid, &tid, &uid))
 620                 return -1;
 621
 622         pthreads->threads = thread_map__new(pid, tid, uid);
 623         if (pthreads->threads == NULL)
 624                 return -1;
 625         return 0;
 626 }
 627
 628 static void pyrf_thread_map__delete(struct pyrf_thread_map *pthreads)
 629 {
 630         perf_thread_map__put(pthreads->threads);
 631         Py_TYPE(pthreads)->tp_free((PyObject*)pthreads);
 632 }
 633
 634 static Py_ssize_t pyrf_thread_map__length(PyObject *obj)
 635 {
 636         struct pyrf_thread_map *pthreads = (void *)obj;
 637
 638         return pthreads->threads->nr;
 639 }
 640
 641 static PyObject *pyrf_thread_map__item(PyObject *obj, Py_ssize_t i)
 642 {
 643         struct pyrf_thread_map *pthreads = (void *)obj;
 644
 645         if (i >= pthreads->threads->nr)
 646                 return NULL;
 647
 648         return Py_BuildValue("i", pthreads->threads->map[i]);
 649 }
 650
 651 static PySequenceMethods pyrf_thread_map__sequence_methods = {
 652         .sq_length = pyrf_thread_map__length,
 653         .sq_item   = pyrf_thread_map__item,
 654 };
 655
 656 static char pyrf_thread_map__doc[] = PyDoc_STR("thread map object.");
 657
 658 static PyTypeObject pyrf_thread_map__type = {
 659         PyVarObject_HEAD_INIT(NULL, 0)
 660         .tp_name        = "perf.thread_map",
 661         .tp_basicsize   = sizeof(struct pyrf_thread_map),
 662         .tp_dealloc     = (destructor)pyrf_thread_map__delete,
 663         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 664         .tp_doc         = pyrf_thread_map__doc,
 665         .tp_as_sequence = &pyrf_thread_map__sequence_methods,
 666         .tp_init        = (initproc)pyrf_thread_map__init,
 667 };
 668
 669 static int pyrf_thread_map__setup_types(void)
 670 {
 671         pyrf_thread_map__type.tp_new = PyType_GenericNew;
 672         return PyType_Ready(&pyrf_thread_map__type);
 673 }
 674
 675 struct pyrf_evsel {
 676         PyObject_HEAD
 677
 678         struct evsel evsel;
 679 };
 680
 681 static int pyrf_evsel__init(struct pyrf_evsel *pevsel,
 682                             PyObject *args, PyObject *kwargs)
 683 {
 684         struct perf_event_attr attr = {
 685                 .type = PERF_TYPE_HARDWARE,
 686                 .config = PERF_COUNT_HW_CPU_CYCLES,
 687                 .sample_type = PERF_SAMPLE_PERIOD | PERF_SAMPLE_TID,
 688         };
 689         static char *kwlist[] = {
 690                 "type",
 691                 "config",
 692                 "sample_freq",
 693                 "sample_period",
 694                 "sample_type",
 695                 "read_format",
 696                 "disabled",
 697                 "inherit",
 698                 "pinned",
 699                 "exclusive",
 700                 "exclude_user",
 701                 "exclude_kernel",
 702                 "exclude_hv",
 703                 "exclude_idle",
 704                 "mmap",
 705                 "context_switch",
 706                 "comm",
 707                 "freq",
 708                 "inherit_stat",
 709                 "enable_on_exec",
 710                 "task",
 711                 "watermark",
 712                 "precise_ip",
 713                 "mmap_data",
 714                 "sample_id_all",
 715                 "wakeup_events",
 716                 "bp_type",
 717                 "bp_addr",
 718                 "bp_len",
 719                  NULL
 720         };
 721         u64 sample_period = 0;
 722         u32 disabled = 0,
 723             inherit = 0,
 724             pinned = 0,
 725             exclusive = 0,
 726             exclude_user = 0,
 727             exclude_kernel = 0,
 728             exclude_hv = 0,
 729             exclude_idle = 0,
 730             mmap = 0,
 731             context_switch = 0,
 732             comm = 0,
 733             freq = 1,
 734             inherit_stat = 0,
 735             enable_on_exec = 0,
 736             task = 0,
 737             watermark = 0,
 738             precise_ip = 0,
 739             mmap_data = 0,
 740             sample_id_all = 1;
 741         int idx = 0;
 742
 743         if (!PyArg_ParseTupleAndKeywords(args, kwargs,
 744                                          "|iKiKKiiiiiiiiiiiiiiiiiiiiiiKK", kwlist,
 745                                          &attr.type, &attr.config, &attr.sample_freq,
 746                                          &sample_period, &attr.sample_type,
 747                                          &attr.read_format, &disabled, &inherit,
 748                                          &pinned, &exclusive, &exclude_user,
 749                                          &exclude_kernel, &exclude_hv, &exclude_idle,
 750                                          &mmap, &context_switch, &comm, &freq, &inherit_stat,
 751                                          &enable_on_exec, &task, &watermark,
 752                                          &precise_ip, &mmap_data, &sample_id_all,
 753                                          &attr.wakeup_events, &attr.bp_type,
 754                                          &attr.bp_addr, &attr.bp_len, &idx))
 755                 return -1;
 756
 757         /* union... */
 758         if (sample_period != 0) {
 759                 if (attr.sample_freq != 0)
 760                         return -1; /* FIXME: throw right exception */
 761                 attr.sample_period = sample_period;
 762         }
 763
 764         /* Bitfields */
 765         attr.disabled       = disabled;
 766         attr.inherit        = inherit;
 767         attr.pinned         = pinned;
 768         attr.exclusive      = exclusive;
 769         attr.exclude_user   = exclude_user;
 770         attr.exclude_kernel = exclude_kernel;
 771         attr.exclude_hv     = exclude_hv;
 772         attr.exclude_idle   = exclude_idle;
 773         attr.mmap           = mmap;
 774         attr.context_switch = context_switch;
 775         attr.comm           = comm;
 776         attr.freq           = freq;
 777         attr.inherit_stat   = inherit_stat;
 778         attr.enable_on_exec = enable_on_exec;
 779         attr.task           = task;
 780         attr.watermark      = watermark;
 781         attr.precise_ip     = precise_ip;
 782         attr.mmap_data      = mmap_data;
 783         attr.sample_id_all  = sample_id_all;
 784         attr.size           = sizeof(attr);
 785
 786         evsel__init(&pevsel->evsel, &attr, idx);
 787         return 0;
 788 }
 789
 790 static void pyrf_evsel__delete(struct pyrf_evsel *pevsel)
 791 {
 792         perf_evsel__exit(&pevsel->evsel);
 793         Py_TYPE(pevsel)->tp_free((PyObject*)pevsel);
 794 }
 795
 796 static PyObject *pyrf_evsel__open(struct pyrf_evsel *pevsel,
 797                                   PyObject *args, PyObject *kwargs)
 798 {
 799         struct evsel *evsel = &pevsel->evsel;
 800         struct perf_cpu_map *cpus = NULL;
 801         struct perf_thread_map *threads = NULL;
 802         PyObject *pcpus = NULL, *pthreads = NULL;
 803         int group = 0, inherit = 0;
 804         static char *kwlist[] = { "cpus", "threads", "group", "inherit", NULL };
 805
 806         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|OOii", kwlist,
 807                                          &pcpus, &pthreads, &group, &inherit))
 808                 return NULL;
 809
 810         if (pthreads != NULL)
 811                 threads = ((struct pyrf_thread_map *)pthreads)->threads;
 812
 813         if (pcpus != NULL)
 814                 cpus = ((struct pyrf_cpu_map *)pcpus)->cpus;
 815
 816         evsel->core.attr.inherit = inherit;
 817         /*
 818          * This will group just the fds for this single evsel, to group
 819          * multiple events, use evlist.open().
 820          */
 821         if (evsel__open(evsel, cpus, threads) < 0) {
 822                 PyErr_SetFromErrno(PyExc_OSError);
 823                 return NULL;
 824         }
 825
 826         Py_INCREF(Py_None);
 827         return Py_None;
 828 }
 829
 830 static PyMethodDef pyrf_evsel__methods[] = {
 831         {
 832                 .ml_name  = "open",
 833                 .ml_meth  = (PyCFunction)pyrf_evsel__open,
 834                 .ml_flags = METH_VARARGS | METH_KEYWORDS,
 835                 .ml_doc   = PyDoc_STR("open the event selector file descriptor table.")
 836         },
 837         { .ml_name = NULL, }
 838 };
 839
 840 static char pyrf_evsel__doc[] = PyDoc_STR("perf event selector list object.");
 841
 842 static PyTypeObject pyrf_evsel__type = {
 843         PyVarObject_HEAD_INIT(NULL, 0)
 844         .tp_name        = "perf.evsel",
 845         .tp_basicsize   = sizeof(struct pyrf_evsel),
 846         .tp_dealloc     = (destructor)pyrf_evsel__delete,
 847         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 848         .tp_doc         = pyrf_evsel__doc,
 849         .tp_methods     = pyrf_evsel__methods,
 850         .tp_init        = (initproc)pyrf_evsel__init,
 851 };
 852
 853 static int pyrf_evsel__setup_types(void)
 854 {
 855         pyrf_evsel__type.tp_new = PyType_GenericNew;
 856         return PyType_Ready(&pyrf_evsel__type);
 857 }
 858
 859 struct pyrf_evlist {
 860         PyObject_HEAD
 861
 862         struct evlist evlist;
 863 };
 864
 865 static int pyrf_evlist__init(struct pyrf_evlist *pevlist,
 866                              PyObject *args, PyObject *kwargs __maybe_unused)
 867 {
 868         PyObject *pcpus = NULL, *pthreads = NULL;
 869         struct perf_cpu_map *cpus;
 870         struct perf_thread_map *threads;
 871
 872         if (!PyArg_ParseTuple(args, "OO", &pcpus, &pthreads))
 873                 return -1;
 874
 875         threads = ((struct pyrf_thread_map *)pthreads)->threads;
 876         cpus = ((struct pyrf_cpu_map *)pcpus)->cpus;
 877         evlist__init(&pevlist->evlist, cpus, threads);
 878         return 0;
 879 }
 880
 881 static void pyrf_evlist__delete(struct pyrf_evlist *pevlist)
 882 {
 883         perf_evlist__exit(&pevlist->evlist);
 884         Py_TYPE(pevlist)->tp_free((PyObject*)pevlist);
 885 }
 886
 887 static PyObject *pyrf_evlist__mmap(struct pyrf_evlist *pevlist,
 888                                    PyObject *args, PyObject *kwargs)
 889 {
 890         struct evlist *evlist = &pevlist->evlist;
 891         static char *kwlist[] = { "pages", "overwrite", NULL };
 892         int pages = 128, overwrite = false;
 893
 894         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|ii", kwlist,
 895                                          &pages, &overwrite))
 896                 return NULL;
 897
 898         if (perf_evlist__mmap(evlist, pages) < 0) {
 899                 PyErr_SetFromErrno(PyExc_OSError);
 900                 return NULL;
 901         }
 902
 903         Py_INCREF(Py_None);
 904         return Py_None;
 905 }
 906
 907 static PyObject *pyrf_evlist__poll(struct pyrf_evlist *pevlist,
 908                                    PyObject *args, PyObject *kwargs)
 909 {
 910         struct evlist *evlist = &pevlist->evlist;
 911         static char *kwlist[] = { "timeout", NULL };
 912         int timeout = -1, n;
 913
 914         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|i", kwlist, &timeout))
 915                 return NULL;
 916
 917         n = perf_evlist__poll(evlist, timeout);
 918         if (n < 0) {
 919                 PyErr_SetFromErrno(PyExc_OSError);
 920                 return NULL;
 921         }
 922
 923         return Py_BuildValue("i", n);
 924 }
 925
 926 static PyObject *pyrf_evlist__get_pollfd(struct pyrf_evlist *pevlist,
 927                                          PyObject *args __maybe_unused,
 928                                          PyObject *kwargs __maybe_unused)
 929 {
 930         struct evlist *evlist = &pevlist->evlist;
 931         PyObject *list = PyList_New(0);
 932         int i;
 933
 934         for (i = 0; i < evlist->pollfd.nr; ++i) {
 935                 PyObject *file;
 936 #if PY_MAJOR_VERSION < 3
 937                 FILE *fp = fdopen(evlist->pollfd.entries[i].fd, "r");
 938
 939                 if (fp == NULL)
 940                         goto free_list;
 941
 942                 file = PyFile_FromFile(fp, "perf", "r", NULL);
 943 #else
 944                 file = PyFile_FromFd(evlist->pollfd.entries[i].fd, "perf", "r", -1,
 945                                      NULL, NULL, NULL, 0);
 946 #endif
 947                 if (file == NULL)
 948                         goto free_list;
 949
 950                 if (PyList_Append(list, file) != 0) {
 951                         Py_DECREF(file);
 952                         goto free_list;
 953                 }
 954
 955                 Py_DECREF(file);
 956         }
 957
 958         return list;
 959 free_list:
 960         return PyErr_NoMemory();
 961 }
 962
 963
 964 static PyObject *pyrf_evlist__add(struct pyrf_evlist *pevlist,
 965                                   PyObject *args,
 966                                   PyObject *kwargs __maybe_unused)
 967 {
 968         struct evlist *evlist = &pevlist->evlist;
 969         PyObject *pevsel;
 970         struct evsel *evsel;
 971
 972         if (!PyArg_ParseTuple(args, "O", &pevsel))
 973                 return NULL;
 974
 975         Py_INCREF(pevsel);
 976         evsel = &((struct pyrf_evsel *)pevsel)->evsel;
 977         evsel->idx = evlist->core.nr_entries;
 978         evlist__add(evlist, evsel);
 979
 980         return Py_BuildValue("i", evlist->core.nr_entries);
 981 }
 982
 983 static struct perf_mmap *get_md(struct evlist *evlist, int cpu)
 984 {
 985         int i;
 986
 987         for (i = 0; i < evlist->nr_mmaps; i++) {
 988                 struct perf_mmap *md = &evlist->mmap[i];
 989
 990                 if (md->cpu == cpu)
 991                         return md;
 992         }
 993
 994         return NULL;
 995 }
 996
 997 static PyObject *pyrf_evlist__read_on_cpu(struct pyrf_evlist *pevlist,
 998                                           PyObject *args, PyObject *kwargs)
 999 {
1000         struct evlist *evlist = &pevlist->evlist;
1001         union perf_event *event;
1002         int sample_id_all = 1, cpu;
1003         static char *kwlist[] = { "cpu", "sample_id_all", NULL };
1004         struct perf_mmap *md;
1005         int err;
1006
1007         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "i|i", kwlist,
1008                                          &cpu, &sample_id_all))
1009                 return NULL;
1010
1011         md = get_md(evlist, cpu);
1012         if (!md)
1013                 return NULL;
1014
1015         if (perf_mmap__read_init(md) < 0)
1016                 goto end;
1017
1018         event = perf_mmap__read_event(md);
1019         if (event != NULL) {
1020                 PyObject *pyevent = pyrf_event__new(event);
1021                 struct pyrf_event *pevent = (struct pyrf_event *)pyevent;
1022                 struct evsel *evsel;
1023
1024                 if (pyevent == NULL)
1025                         return PyErr_NoMemory();
1026
1027                 evsel = perf_evlist__event2evsel(evlist, event);
1028                 if (!evsel) {
1029                         Py_INCREF(Py_None);
1030                         return Py_None;
1031                 }
1032
1033                 pevent->evsel = evsel;
1034
1035                 err = perf_evsel__parse_sample(evsel, event, &pevent->sample);
1036
1037                 /* Consume the even only after we parsed it out. */
1038                 perf_mmap__consume(md);
1039
1040                 if (err)
1041                         return PyErr_Format(PyExc_OSError,
1042                                             "perf: can't parse sample, err=%d", err);
1043                 return pyevent;
1044         }
1045 end:
1046         Py_INCREF(Py_None);
1047         return Py_None;
1048 }
1049
1050 static PyObject *pyrf_evlist__open(struct pyrf_evlist *pevlist,
1051                                    PyObject *args, PyObject *kwargs)
1052 {
1053         struct evlist *evlist = &pevlist->evlist;
1054         int group = 0;
1055         static char *kwlist[] = { "group", NULL };
1056
1057         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|OOii", kwlist, &group))
1058                 return NULL;
1059
1060         if (group)
1061                 perf_evlist__set_leader(evlist);
1062
1063         if (evlist__open(evlist) < 0) {
1064                 PyErr_SetFromErrno(PyExc_OSError);
1065                 return NULL;
1066         }
1067
1068         Py_INCREF(Py_None);
1069         return Py_None;
1070 }
1071
1072 static PyMethodDef pyrf_evlist__methods[] = {
1073         {
1074                 .ml_name  = "mmap",
1075                 .ml_meth  = (PyCFunction)pyrf_evlist__mmap,
1076                 .ml_flags = METH_VARARGS | METH_KEYWORDS,
1077                 .ml_doc   = PyDoc_STR("mmap the file descriptor table.")
1078         },
1079         {
1080                 .ml_name  = "open",
1081                 .ml_meth  = (PyCFunction)pyrf_evlist__open,
1082                 .ml_flags = METH_VARARGS | METH_KEYWORDS,
1083                 .ml_doc   = PyDoc_STR("open the file descriptors.")
1084         },
1085         {
1086                 .ml_name  = "poll",
1087                 .ml_meth  = (PyCFunction)pyrf_evlist__poll,
1088                 .ml_flags = METH_VARARGS | METH_KEYWORDS,
1089                 .ml_doc   = PyDoc_STR("poll the file descriptor table.")
1090         },
1091         {
1092                 .ml_name  = "get_pollfd",
1093                 .ml_meth  = (PyCFunction)pyrf_evlist__get_pollfd,
1094                 .ml_flags = METH_VARARGS | METH_KEYWORDS,
1095                 .ml_doc   = PyDoc_STR("get the poll file descriptor table.")
1096         },
1097         {
1098                 .ml_name  = "add",
1099                 .ml_meth  = (PyCFunction)pyrf_evlist__add,
1100                 .ml_flags = METH_VARARGS | METH_KEYWORDS,
1101                 .ml_doc   = PyDoc_STR("adds an event selector to the list.")
1102         },
1103         {
1104                 .ml_name  = "read_on_cpu",
1105                 .ml_meth  = (PyCFunction)pyrf_evlist__read_on_cpu,
1106                 .ml_flags = METH_VARARGS | METH_KEYWORDS,
1107                 .ml_doc   = PyDoc_STR("reads an event.")
1108         },
1109         { .ml_name = NULL, }
1110 };
1111
1112 static Py_ssize_t pyrf_evlist__length(PyObject *obj)
1113 {
1114         struct pyrf_evlist *pevlist = (void *)obj;
1115
1116         return pevlist->evlist.core.nr_entries;
1117 }
1118
1119 static PyObject *pyrf_evlist__item(PyObject *obj, Py_ssize_t i)
1120 {
1121         struct pyrf_evlist *pevlist = (void *)obj;
1122         struct evsel *pos;
1123
1124         if (i >= pevlist->evlist.core.nr_entries)
1125                 return NULL;
1126
1127         evlist__for_each_entry(&pevlist->evlist, pos) {
1128                 if (i-- == 0)
1129                         break;
1130         }
1131
1132         return Py_BuildValue("O", container_of(pos, struct pyrf_evsel, evsel));
1133 }
1134
1135 static PySequenceMethods pyrf_evlist__sequence_methods = {
1136         .sq_length = pyrf_evlist__length,
1137         .sq_item   = pyrf_evlist__item,
1138 };
1139
1140 static char pyrf_evlist__doc[] = PyDoc_STR("perf event selector list object.");
1141
1142 static PyTypeObject pyrf_evlist__type = {
1143         PyVarObject_HEAD_INIT(NULL, 0)
1144         .tp_name        = "perf.evlist",
1145         .tp_basicsize   = sizeof(struct pyrf_evlist),
1146         .tp_dealloc     = (destructor)pyrf_evlist__delete,
1147         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
1148         .tp_as_sequence = &pyrf_evlist__sequence_methods,
1149         .tp_doc         = pyrf_evlist__doc,
1150         .tp_methods     = pyrf_evlist__methods,
1151         .tp_init        = (initproc)pyrf_evlist__init,
1152 };
1153
1154 static int pyrf_evlist__setup_types(void)
1155 {
1156         pyrf_evlist__type.tp_new = PyType_GenericNew;
1157         return PyType_Ready(&pyrf_evlist__type);
1158 }
1159
1160 #define PERF_CONST(name) { #name, PERF_##name }
1161
1162 static struct {
1163         const char *name;
1164         int         value;
1165 } perf__constants[] = {
1166         PERF_CONST(TYPE_HARDWARE),
1167         PERF_CONST(TYPE_SOFTWARE),
1168         PERF_CONST(TYPE_TRACEPOINT),
1169         PERF_CONST(TYPE_HW_CACHE),
1170         PERF_CONST(TYPE_RAW),
1171         PERF_CONST(TYPE_BREAKPOINT),
1172
1173         PERF_CONST(COUNT_HW_CPU_CYCLES),
1174         PERF_CONST(COUNT_HW_INSTRUCTIONS),
1175         PERF_CONST(COUNT_HW_CACHE_REFERENCES),
1176         PERF_CONST(COUNT_HW_CACHE_MISSES),
1177         PERF_CONST(COUNT_HW_BRANCH_INSTRUCTIONS),
1178         PERF_CONST(COUNT_HW_BRANCH_MISSES),
1179         PERF_CONST(COUNT_HW_BUS_CYCLES),
1180         PERF_CONST(COUNT_HW_CACHE_L1D),
1181         PERF_CONST(COUNT_HW_CACHE_L1I),
1182         PERF_CONST(COUNT_HW_CACHE_LL),
1183         PERF_CONST(COUNT_HW_CACHE_DTLB),
1184         PERF_CONST(COUNT_HW_CACHE_ITLB),
1185         PERF_CONST(COUNT_HW_CACHE_BPU),
1186         PERF_CONST(COUNT_HW_CACHE_OP_READ),
1187         PERF_CONST(COUNT_HW_CACHE_OP_WRITE),
1188         PERF_CONST(COUNT_HW_CACHE_OP_PREFETCH),
1189         PERF_CONST(COUNT_HW_CACHE_RESULT_ACCESS),
1190         PERF_CONST(COUNT_HW_CACHE_RESULT_MISS),
1191
1192         PERF_CONST(COUNT_HW_STALLED_CYCLES_FRONTEND),
1193         PERF_CONST(COUNT_HW_STALLED_CYCLES_BACKEND),
1194
1195         PERF_CONST(COUNT_SW_CPU_CLOCK),
1196         PERF_CONST(COUNT_SW_TASK_CLOCK),
1197         PERF_CONST(COUNT_SW_PAGE_FAULTS),
1198         PERF_CONST(COUNT_SW_CONTEXT_SWITCHES),
1199         PERF_CONST(COUNT_SW_CPU_MIGRATIONS),
1200         PERF_CONST(COUNT_SW_PAGE_FAULTS_MIN),
1201         PERF_CONST(COUNT_SW_PAGE_FAULTS_MAJ),
1202         PERF_CONST(COUNT_SW_ALIGNMENT_FAULTS),
1203         PERF_CONST(COUNT_SW_EMULATION_FAULTS),
1204         PERF_CONST(COUNT_SW_DUMMY),
1205
1206         PERF_CONST(SAMPLE_IP),
1207         PERF_CONST(SAMPLE_TID),
1208         PERF_CONST(SAMPLE_TIME),
1209         PERF_CONST(SAMPLE_ADDR),
1210         PERF_CONST(SAMPLE_READ),
1211         PERF_CONST(SAMPLE_CALLCHAIN),
1212         PERF_CONST(SAMPLE_ID),
1213         PERF_CONST(SAMPLE_CPU),
1214         PERF_CONST(SAMPLE_PERIOD),
1215         PERF_CONST(SAMPLE_STREAM_ID),
1216         PERF_CONST(SAMPLE_RAW),
1217
1218         PERF_CONST(FORMAT_TOTAL_TIME_ENABLED),
1219         PERF_CONST(FORMAT_TOTAL_TIME_RUNNING),
1220         PERF_CONST(FORMAT_ID),
1221         PERF_CONST(FORMAT_GROUP),
1222
1223         PERF_CONST(RECORD_MMAP),
1224         PERF_CONST(RECORD_LOST),
1225         PERF_CONST(RECORD_COMM),
1226         PERF_CONST(RECORD_EXIT),
1227         PERF_CONST(RECORD_THROTTLE),
1228         PERF_CONST(RECORD_UNTHROTTLE),
1229         PERF_CONST(RECORD_FORK),
1230         PERF_CONST(RECORD_READ),
1231         PERF_CONST(RECORD_SAMPLE),
1232         PERF_CONST(RECORD_MMAP2),
1233         PERF_CONST(RECORD_AUX),
1234         PERF_CONST(RECORD_ITRACE_START),
1235         PERF_CONST(RECORD_LOST_SAMPLES),
1236         PERF_CONST(RECORD_SWITCH),
1237         PERF_CONST(RECORD_SWITCH_CPU_WIDE),
1238
1239         PERF_CONST(RECORD_MISC_SWITCH_OUT),
1240         { .name = NULL, },
1241 };
1242
1243 static PyObject *pyrf__tracepoint(struct pyrf_evsel *pevsel,
1244                                   PyObject *args, PyObject *kwargs)
1245 {
1246         struct tep_event *tp_format;
1247         static char *kwlist[] = { "sys", "name", NULL };
1248         char *sys  = NULL;
1249         char *name = NULL;
1250
1251         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|ss", kwlist,
1252                                          &sys, &name))
1253                 return NULL;
1254
1255         tp_format = trace_event__tp_format(sys, name);
1256         if (IS_ERR(tp_format))
1257                 return _PyLong_FromLong(-1);
1258
1259         return _PyLong_FromLong(tp_format->id);
1260 }
1261
1262 static PyMethodDef perf__methods[] = {
1263         {
1264                 .ml_name  = "tracepoint",
1265                 .ml_meth  = (PyCFunction) pyrf__tracepoint,
1266                 .ml_flags = METH_VARARGS | METH_KEYWORDS,
1267                 .ml_doc   = PyDoc_STR("Get tracepoint config.")
1268         },
1269         { .ml_name = NULL, }
1270 };
1271
1272 #if PY_MAJOR_VERSION < 3
1273 PyMODINIT_FUNC initperf(void)
1274 #else
1275 PyMODINIT_FUNC PyInit_perf(void)
1276 #endif
1277 {
1278         PyObject *obj;
1279         int i;
1280         PyObject *dict;
1281 #if PY_MAJOR_VERSION < 3
1282         PyObject *module = Py_InitModule("perf", perf__methods);
1283 #else
1284         static struct PyModuleDef moduledef = {
1285                 PyModuleDef_HEAD_INIT,
1286                 "perf",                 /* m_name */
1287                 "",                     /* m_doc */
1288                 -1,                     /* m_size */
1289                 perf__methods,          /* m_methods */
1290                 NULL,                   /* m_reload */
1291                 NULL,                   /* m_traverse */
1292                 NULL,                   /* m_clear */
1293                 NULL,                   /* m_free */
1294         };
1295         PyObject *module = PyModule_Create(&moduledef);
1296 #endif
1297
1298         if (module == NULL ||
1299             pyrf_event__setup_types() < 0 ||
1300             pyrf_evlist__setup_types() < 0 ||
1301             pyrf_evsel__setup_types() < 0 ||
1302             pyrf_thread_map__setup_types() < 0 ||
1303             pyrf_cpu_map__setup_types() < 0)
1304 #if PY_MAJOR_VERSION < 3
1305                 return;
1306 #else
1307                 return module;
1308 #endif
1309
1310         /* The page_size is placed in util object. */
1311         page_size = sysconf(_SC_PAGE_SIZE);
1312
1313         Py_INCREF(&pyrf_evlist__type);
1314         PyModule_AddObject(module, "evlist", (PyObject*)&pyrf_evlist__type);
1315
1316         Py_INCREF(&pyrf_evsel__type);
1317         PyModule_AddObject(module, "evsel", (PyObject*)&pyrf_evsel__type);
1318
1319         Py_INCREF(&pyrf_mmap_event__type);
1320         PyModule_AddObject(module, "mmap_event", (PyObject *)&pyrf_mmap_event__type);
1321
1322         Py_INCREF(&pyrf_lost_event__type);
1323         PyModule_AddObject(module, "lost_event", (PyObject *)&pyrf_lost_event__type);
1324
1325         Py_INCREF(&pyrf_comm_event__type);
1326         PyModule_AddObject(module, "comm_event", (PyObject *)&pyrf_comm_event__type);
1327
1328         Py_INCREF(&pyrf_task_event__type);
1329         PyModule_AddObject(module, "task_event", (PyObject *)&pyrf_task_event__type);
1330
1331         Py_INCREF(&pyrf_throttle_event__type);
1332         PyModule_AddObject(module, "throttle_event", (PyObject *)&pyrf_throttle_event__type);
1333
1334         Py_INCREF(&pyrf_task_event__type);
1335         PyModule_AddObject(module, "task_event", (PyObject *)&pyrf_task_event__type);
1336
1337         Py_INCREF(&pyrf_read_event__type);
1338         PyModule_AddObject(module, "read_event", (PyObject *)&pyrf_read_event__type);
1339
1340         Py_INCREF(&pyrf_sample_event__type);
1341         PyModule_AddObject(module, "sample_event", (PyObject *)&pyrf_sample_event__type);
1342
1343         Py_INCREF(&pyrf_context_switch_event__type);
1344         PyModule_AddObject(module, "switch_event", (PyObject *)&pyrf_context_switch_event__type);
1345
1346         Py_INCREF(&pyrf_thread_map__type);
1347         PyModule_AddObject(module, "thread_map", (PyObject*)&pyrf_thread_map__type);
1348
1349         Py_INCREF(&pyrf_cpu_map__type);
1350         PyModule_AddObject(module, "cpu_map", (PyObject*)&pyrf_cpu_map__type);
1351
1352         dict = PyModule_GetDict(module);
1353         if (dict == NULL)
1354                 goto error;
1355
1356         for (i = 0; perf__constants[i].name != NULL; i++) {
1357                 obj = _PyLong_FromLong(perf__constants[i].value);
1358                 if (obj == NULL)
1359                         goto error;
1360                 PyDict_SetItemString(dict, perf__constants[i].name, obj);
1361                 Py_DECREF(obj);
1362         }
1363
1364 error:
1365         if (PyErr_Occurred())
1366                 PyErr_SetString(PyExc_ImportError, "perf: Init failed!");
1367 #if PY_MAJOR_VERSION >= 3
1368         return module;
1369 #endif
1370 }
1371
1372 /*
1373  * Dummy, to avoid dragging all the test_attr infrastructure in the python
1374  * binding.
1375  */
1376 void test_attr__open(struct perf_event_attr *attr, pid_t pid, int cpu,
1377                      int fd, int group_fd, unsigned long flags)
1378 {
1379 }