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 <traceevent/event-parse.h>
   9 #include <perf/mmap.h>
  10 #include "evlist.h"
  11 #include "callchain.h"
  12 #include "evsel.h"
  13 #include "event.h"
  14 #include "print_binary.h"
  15 #include "thread_map.h"
  16 #include "trace-event.h"
  17 #include "mmap.h"
  18 #include "stat.h"
  19 #include "metricgroup.h"
  20 #include "util/env.h"
  21 #include <internal/lib.h>
  22 #include "util.h"
  23
  24 #if PY_MAJOR_VERSION < 3
  25 #define _PyUnicode_FromString(arg) \
  26   PyString_FromString(arg)
  27 #define _PyUnicode_AsString(arg) \
  28   PyString_AsString(arg)
  29 #define _PyUnicode_FromFormat(...) \
  30   PyString_FromFormat(__VA_ARGS__)
  31 #define _PyLong_FromLong(arg) \
  32   PyInt_FromLong(arg)
  33
  34 #else
  35
  36 #define _PyUnicode_FromString(arg) \
  37   PyUnicode_FromString(arg)
  38 #define _PyUnicode_FromFormat(...) \
  39   PyUnicode_FromFormat(__VA_ARGS__)
  40 #define _PyLong_FromLong(arg) \
  41   PyLong_FromLong(arg)
  42 #endif
  43
  44 #ifndef Py_TYPE
  45 #define Py_TYPE(ob) (((PyObject*)(ob))->ob_type)
  46 #endif
  47
  48 /*
  49  * Provide these two so that we don't have to link against callchain.c and
  50  * start dragging hist.c, etc.
  51  */
  52 struct callchain_param callchain_param;
  53
  54 int parse_callchain_record(const char *arg __maybe_unused,
  55                            struct callchain_param *param __maybe_unused)
  56 {
  57         return 0;
  58 }
  59
  60 /*
  61  * Add this one here not to drag util/env.c
  62  */
  63 struct perf_env perf_env;
  64
  65 /*
  66  * Add this one here not to drag util/stat-shadow.c
  67  */
  68 void perf_stat__collect_metric_expr(struct evlist *evsel_list)
  69 {
  70 }
  71
  72 /*
  73  * Add this one here not to drag util/metricgroup.c
  74  */
  75 int metricgroup__copy_metric_events(struct evlist *evlist, struct cgroup *cgrp,
  76                                     struct rblist *new_metric_events,
  77                                     struct rblist *old_metric_events)
  78 {
  79         return 0;
  80 }
  81
  82 /*
  83  * XXX: All these evsel destructors need some better mechanism, like a linked
  84  * list of destructors registered when the relevant code indeed is used instead
  85  * of having more and more calls in perf_evsel__delete(). -- acme
  86  *
  87  * For now, add some more:
  88  *
  89  * Not to drag the BPF bandwagon...
  90  */
  91 void bpf_counter__destroy(struct evsel *evsel);
  92 int bpf_counter__install_pe(struct evsel *evsel, int cpu, int fd);
  93
  94 void bpf_counter__destroy(struct evsel *evsel __maybe_unused)
  95 {
  96 }
  97
  98 int bpf_counter__install_pe(struct evsel *evsel __maybe_unused, int cpu __maybe_unused, int fd __maybe_unused)
  99 {
 100         return 0;
 101 }
 102
 103 /*
 104  * Support debug printing even though util/debug.c is not linked.  That means
 105  * implementing 'verbose' and 'eprintf'.
 106  */
 107 int verbose;
 108 int debug_peo_args;
 109
 110 int eprintf(int level, int var, const char *fmt, ...);
 111
 112 int eprintf(int level, int var, const char *fmt, ...)
 113 {
 114         va_list args;
 115         int ret = 0;
 116
 117         if (var >= level) {
 118                 va_start(args, fmt);
 119                 ret = vfprintf(stderr, fmt, args);
 120                 va_end(args);
 121         }
 122
 123         return ret;
 124 }
 125
 126 /* Define PyVarObject_HEAD_INIT for python 2.5 */
 127 #ifndef PyVarObject_HEAD_INIT
 128 # define PyVarObject_HEAD_INIT(type, size) PyObject_HEAD_INIT(type) size,
 129 #endif
 130
 131 #if PY_MAJOR_VERSION < 3
 132 PyMODINIT_FUNC initperf(void);
 133 #else
 134 PyMODINIT_FUNC PyInit_perf(void);
 135 #endif
 136
 137 #define member_def(type, member, ptype, help) \
 138         { #member, ptype, \
 139           offsetof(struct pyrf_event, event) + offsetof(struct type, member), \
 140           0, help }
 141
 142 #define sample_member_def(name, member, ptype, help) \
 143         { #name, ptype, \
 144           offsetof(struct pyrf_event, sample) + offsetof(struct perf_sample, member), \
 145           0, help }
 146
 147 struct pyrf_event {
 148         PyObject_HEAD
 149         struct evsel *evsel;
 150         struct perf_sample sample;
 151         union perf_event   event;
 152 };
 153
 154 #define sample_members \
 155         sample_member_def(sample_ip, ip, T_ULONGLONG, "event type"),                     \
 156         sample_member_def(sample_pid, pid, T_INT, "event pid"),                  \
 157         sample_member_def(sample_tid, tid, T_INT, "event tid"),                  \
 158         sample_member_def(sample_time, time, T_ULONGLONG, "event timestamp"),            \
 159         sample_member_def(sample_addr, addr, T_ULONGLONG, "event addr"),                 \
 160         sample_member_def(sample_id, id, T_ULONGLONG, "event id"),                       \
 161         sample_member_def(sample_stream_id, stream_id, T_ULONGLONG, "event stream id"), \
 162         sample_member_def(sample_period, period, T_ULONGLONG, "event period"),           \
 163         sample_member_def(sample_cpu, cpu, T_UINT, "event cpu"),
 164
 165 static char pyrf_mmap_event__doc[] = PyDoc_STR("perf mmap event object.");
 166
 167 static PyMemberDef pyrf_mmap_event__members[] = {
 168         sample_members
 169         member_def(perf_event_header, type, T_UINT, "event type"),
 170         member_def(perf_event_header, misc, T_UINT, "event misc"),
 171         member_def(perf_record_mmap, pid, T_UINT, "event pid"),
 172         member_def(perf_record_mmap, tid, T_UINT, "event tid"),
 173         member_def(perf_record_mmap, start, T_ULONGLONG, "start of the map"),
 174         member_def(perf_record_mmap, len, T_ULONGLONG, "map length"),
 175         member_def(perf_record_mmap, pgoff, T_ULONGLONG, "page offset"),
 176         member_def(perf_record_mmap, filename, T_STRING_INPLACE, "backing store"),
 177         { .name = NULL, },
 178 };
 179
 180 static PyObject *pyrf_mmap_event__repr(struct pyrf_event *pevent)
 181 {
 182         PyObject *ret;
 183         char *s;
 184
 185         if (asprintf(&s, "{ type: mmap, pid: %u, tid: %u, start: %#" PRI_lx64 ", "
 186                          "length: %#" PRI_lx64 ", offset: %#" PRI_lx64 ", "
 187                          "filename: %s }",
 188                      pevent->event.mmap.pid, pevent->event.mmap.tid,
 189                      pevent->event.mmap.start, pevent->event.mmap.len,
 190                      pevent->event.mmap.pgoff, pevent->event.mmap.filename) < 0) {
 191                 ret = PyErr_NoMemory();
 192         } else {
 193                 ret = _PyUnicode_FromString(s);
 194                 free(s);
 195         }
 196         return ret;
 197 }
 198
 199 static PyTypeObject pyrf_mmap_event__type = {
 200         PyVarObject_HEAD_INIT(NULL, 0)
 201         .tp_name        = "perf.mmap_event",
 202         .tp_basicsize   = sizeof(struct pyrf_event),
 203         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 204         .tp_doc         = pyrf_mmap_event__doc,
 205         .tp_members     = pyrf_mmap_event__members,
 206         .tp_repr        = (reprfunc)pyrf_mmap_event__repr,
 207 };
 208
 209 static char pyrf_task_event__doc[] = PyDoc_STR("perf task (fork/exit) event object.");
 210
 211 static PyMemberDef pyrf_task_event__members[] = {
 212         sample_members
 213         member_def(perf_event_header, type, T_UINT, "event type"),
 214         member_def(perf_record_fork, pid, T_UINT, "event pid"),
 215         member_def(perf_record_fork, ppid, T_UINT, "event ppid"),
 216         member_def(perf_record_fork, tid, T_UINT, "event tid"),
 217         member_def(perf_record_fork, ptid, T_UINT, "event ptid"),
 218         member_def(perf_record_fork, time, T_ULONGLONG, "timestamp"),
 219         { .name = NULL, },
 220 };
 221
 222 static PyObject *pyrf_task_event__repr(struct pyrf_event *pevent)
 223 {
 224         return _PyUnicode_FromFormat("{ type: %s, pid: %u, ppid: %u, tid: %u, "
 225                                    "ptid: %u, time: %" PRI_lu64 "}",
 226                                    pevent->event.header.type == PERF_RECORD_FORK ? "fork" : "exit",
 227                                    pevent->event.fork.pid,
 228                                    pevent->event.fork.ppid,
 229                                    pevent->event.fork.tid,
 230                                    pevent->event.fork.ptid,
 231                                    pevent->event.fork.time);
 232 }
 233
 234 static PyTypeObject pyrf_task_event__type = {
 235         PyVarObject_HEAD_INIT(NULL, 0)
 236         .tp_name        = "perf.task_event",
 237         .tp_basicsize   = sizeof(struct pyrf_event),
 238         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 239         .tp_doc         = pyrf_task_event__doc,
 240         .tp_members     = pyrf_task_event__members,
 241         .tp_repr        = (reprfunc)pyrf_task_event__repr,
 242 };
 243
 244 static char pyrf_comm_event__doc[] = PyDoc_STR("perf comm event object.");
 245
 246 static PyMemberDef pyrf_comm_event__members[] = {
 247         sample_members
 248         member_def(perf_event_header, type, T_UINT, "event type"),
 249         member_def(perf_record_comm, pid, T_UINT, "event pid"),
 250         member_def(perf_record_comm, tid, T_UINT, "event tid"),
 251         member_def(perf_record_comm, comm, T_STRING_INPLACE, "process name"),
 252         { .name = NULL, },
 253 };
 254
 255 static PyObject *pyrf_comm_event__repr(struct pyrf_event *pevent)
 256 {
 257         return _PyUnicode_FromFormat("{ type: comm, pid: %u, tid: %u, comm: %s }",
 258                                    pevent->event.comm.pid,
 259                                    pevent->event.comm.tid,
 260                                    pevent->event.comm.comm);
 261 }
 262
 263 static PyTypeObject pyrf_comm_event__type = {
 264         PyVarObject_HEAD_INIT(NULL, 0)
 265         .tp_name        = "perf.comm_event",
 266         .tp_basicsize   = sizeof(struct pyrf_event),
 267         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 268         .tp_doc         = pyrf_comm_event__doc,
 269         .tp_members     = pyrf_comm_event__members,
 270         .tp_repr        = (reprfunc)pyrf_comm_event__repr,
 271 };
 272
 273 static char pyrf_throttle_event__doc[] = PyDoc_STR("perf throttle event object.");
 274
 275 static PyMemberDef pyrf_throttle_event__members[] = {
 276         sample_members
 277         member_def(perf_event_header, type, T_UINT, "event type"),
 278         member_def(perf_record_throttle, time, T_ULONGLONG, "timestamp"),
 279         member_def(perf_record_throttle, id, T_ULONGLONG, "event id"),
 280         member_def(perf_record_throttle, stream_id, T_ULONGLONG, "event stream id"),
 281         { .name = NULL, },
 282 };
 283
 284 static PyObject *pyrf_throttle_event__repr(struct pyrf_event *pevent)
 285 {
 286         struct perf_record_throttle *te = (struct perf_record_throttle *)(&pevent->event.header + 1);
 287
 288         return _PyUnicode_FromFormat("{ type: %sthrottle, time: %" PRI_lu64 ", id: %" PRI_lu64
 289                                    ", stream_id: %" PRI_lu64 " }",
 290                                    pevent->event.header.type == PERF_RECORD_THROTTLE ? "" : "un",
 291                                    te->time, te->id, te->stream_id);
 292 }
 293
 294 static PyTypeObject pyrf_throttle_event__type = {
 295         PyVarObject_HEAD_INIT(NULL, 0)
 296         .tp_name        = "perf.throttle_event",
 297         .tp_basicsize   = sizeof(struct pyrf_event),
 298         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 299         .tp_doc         = pyrf_throttle_event__doc,
 300         .tp_members     = pyrf_throttle_event__members,
 301         .tp_repr        = (reprfunc)pyrf_throttle_event__repr,
 302 };
 303
 304 static char pyrf_lost_event__doc[] = PyDoc_STR("perf lost event object.");
 305
 306 static PyMemberDef pyrf_lost_event__members[] = {
 307         sample_members
 308         member_def(perf_record_lost, id, T_ULONGLONG, "event id"),
 309         member_def(perf_record_lost, lost, T_ULONGLONG, "number of lost events"),
 310         { .name = NULL, },
 311 };
 312
 313 static PyObject *pyrf_lost_event__repr(struct pyrf_event *pevent)
 314 {
 315         PyObject *ret;
 316         char *s;
 317
 318         if (asprintf(&s, "{ type: lost, id: %#" PRI_lx64 ", "
 319                          "lost: %#" PRI_lx64 " }",
 320                      pevent->event.lost.id, pevent->event.lost.lost) < 0) {
 321                 ret = PyErr_NoMemory();
 322         } else {
 323                 ret = _PyUnicode_FromString(s);
 324                 free(s);
 325         }
 326         return ret;
 327 }
 328
 329 static PyTypeObject pyrf_lost_event__type = {
 330         PyVarObject_HEAD_INIT(NULL, 0)
 331         .tp_name        = "perf.lost_event",
 332         .tp_basicsize   = sizeof(struct pyrf_event),
 333         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 334         .tp_doc         = pyrf_lost_event__doc,
 335         .tp_members     = pyrf_lost_event__members,
 336         .tp_repr        = (reprfunc)pyrf_lost_event__repr,
 337 };
 338
 339 static char pyrf_read_event__doc[] = PyDoc_STR("perf read event object.");
 340
 341 static PyMemberDef pyrf_read_event__members[] = {
 342         sample_members
 343         member_def(perf_record_read, pid, T_UINT, "event pid"),
 344         member_def(perf_record_read, tid, T_UINT, "event tid"),
 345         { .name = NULL, },
 346 };
 347
 348 static PyObject *pyrf_read_event__repr(struct pyrf_event *pevent)
 349 {
 350         return _PyUnicode_FromFormat("{ type: read, pid: %u, tid: %u }",
 351                                    pevent->event.read.pid,
 352                                    pevent->event.read.tid);
 353         /*
 354          * FIXME: return the array of read values,
 355          * making this method useful ;-)
 356          */
 357 }
 358
 359 static PyTypeObject pyrf_read_event__type = {
 360         PyVarObject_HEAD_INIT(NULL, 0)
 361         .tp_name        = "perf.read_event",
 362         .tp_basicsize   = sizeof(struct pyrf_event),
 363         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 364         .tp_doc         = pyrf_read_event__doc,
 365         .tp_members     = pyrf_read_event__members,
 366         .tp_repr        = (reprfunc)pyrf_read_event__repr,
 367 };
 368
 369 static char pyrf_sample_event__doc[] = PyDoc_STR("perf sample event object.");
 370
 371 static PyMemberDef pyrf_sample_event__members[] = {
 372         sample_members
 373         member_def(perf_event_header, type, T_UINT, "event type"),
 374         { .name = NULL, },
 375 };
 376
 377 static PyObject *pyrf_sample_event__repr(struct pyrf_event *pevent)
 378 {
 379         PyObject *ret;
 380         char *s;
 381
 382         if (asprintf(&s, "{ type: sample }") < 0) {
 383                 ret = PyErr_NoMemory();
 384         } else {
 385                 ret = _PyUnicode_FromString(s);
 386                 free(s);
 387         }
 388         return ret;
 389 }
 390
 391 static bool is_tracepoint(struct pyrf_event *pevent)
 392 {
 393         return pevent->evsel->core.attr.type == PERF_TYPE_TRACEPOINT;
 394 }
 395
 396 static PyObject*
 397 tracepoint_field(struct pyrf_event *pe, struct tep_format_field *field)
 398 {
 399         struct tep_handle *pevent = field->event->tep;
 400         void *data = pe->sample.raw_data;
 401         PyObject *ret = NULL;
 402         unsigned long long val;
 403         unsigned int offset, len;
 404
 405         if (field->flags & TEP_FIELD_IS_ARRAY) {
 406                 offset = field->offset;
 407                 len    = field->size;
 408                 if (field->flags & TEP_FIELD_IS_DYNAMIC) {
 409                         val     = tep_read_number(pevent, data + offset, len);
 410                         offset  = val;
 411                         len     = offset >> 16;
 412                         offset &= 0xffff;
 413                 }
 414                 if (field->flags & TEP_FIELD_IS_STRING &&
 415                     is_printable_array(data + offset, len)) {
 416                         ret = _PyUnicode_FromString((char *)data + offset);
 417                 } else {
 418                         ret = PyByteArray_FromStringAndSize((const char *) data + offset, len);
 419                         field->flags &= ~TEP_FIELD_IS_STRING;
 420                 }
 421         } else {
 422                 val = tep_read_number(pevent, data + field->offset,
 423                                       field->size);
 424                 if (field->flags & TEP_FIELD_IS_POINTER)
 425                         ret = PyLong_FromUnsignedLong((unsigned long) val);
 426                 else if (field->flags & TEP_FIELD_IS_SIGNED)
 427                         ret = PyLong_FromLong((long) val);
 428                 else
 429                         ret = PyLong_FromUnsignedLong((unsigned long) val);
 430         }
 431
 432         return ret;
 433 }
 434
 435 static PyObject*
 436 get_tracepoint_field(struct pyrf_event *pevent, PyObject *attr_name)
 437 {
 438         const char *str = _PyUnicode_AsString(PyObject_Str(attr_name));
 439         struct evsel *evsel = pevent->evsel;
 440         struct tep_format_field *field;
 441
 442         if (!evsel->tp_format) {
 443                 struct tep_event *tp_format;
 444
 445                 tp_format = trace_event__tp_format_id(evsel->core.attr.config);
 446                 if (!tp_format)
 447                         return NULL;
 448
 449                 evsel->tp_format = tp_format;
 450         }
 451
 452         field = tep_find_any_field(evsel->tp_format, str);
 453         if (!field)
 454                 return NULL;
 455
 456         return tracepoint_field(pevent, field);
 457 }
 458
 459 static PyObject*
 460 pyrf_sample_event__getattro(struct pyrf_event *pevent, PyObject *attr_name)
 461 {
 462         PyObject *obj = NULL;
 463
 464         if (is_tracepoint(pevent))
 465                 obj = get_tracepoint_field(pevent, attr_name);
 466
 467         return obj ?: PyObject_GenericGetAttr((PyObject *) pevent, attr_name);
 468 }
 469
 470 static PyTypeObject pyrf_sample_event__type = {
 471         PyVarObject_HEAD_INIT(NULL, 0)
 472         .tp_name        = "perf.sample_event",
 473         .tp_basicsize   = sizeof(struct pyrf_event),
 474         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 475         .tp_doc         = pyrf_sample_event__doc,
 476         .tp_members     = pyrf_sample_event__members,
 477         .tp_repr        = (reprfunc)pyrf_sample_event__repr,
 478         .tp_getattro    = (getattrofunc) pyrf_sample_event__getattro,
 479 };
 480
 481 static char pyrf_context_switch_event__doc[] = PyDoc_STR("perf context_switch event object.");
 482
 483 static PyMemberDef pyrf_context_switch_event__members[] = {
 484         sample_members
 485         member_def(perf_event_header, type, T_UINT, "event type"),
 486         member_def(perf_record_switch, next_prev_pid, T_UINT, "next/prev pid"),
 487         member_def(perf_record_switch, next_prev_tid, T_UINT, "next/prev tid"),
 488         { .name = NULL, },
 489 };
 490
 491 static PyObject *pyrf_context_switch_event__repr(struct pyrf_event *pevent)
 492 {
 493         PyObject *ret;
 494         char *s;
 495
 496         if (asprintf(&s, "{ type: context_switch, next_prev_pid: %u, next_prev_tid: %u, switch_out: %u }",
 497                      pevent->event.context_switch.next_prev_pid,
 498                      pevent->event.context_switch.next_prev_tid,
 499                      !!(pevent->event.header.misc & PERF_RECORD_MISC_SWITCH_OUT)) < 0) {
 500                 ret = PyErr_NoMemory();
 501         } else {
 502                 ret = _PyUnicode_FromString(s);
 503                 free(s);
 504         }
 505         return ret;
 506 }
 507
 508 static PyTypeObject pyrf_context_switch_event__type = {
 509         PyVarObject_HEAD_INIT(NULL, 0)
 510         .tp_name        = "perf.context_switch_event",
 511         .tp_basicsize   = sizeof(struct pyrf_event),
 512         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 513         .tp_doc         = pyrf_context_switch_event__doc,
 514         .tp_members     = pyrf_context_switch_event__members,
 515         .tp_repr        = (reprfunc)pyrf_context_switch_event__repr,
 516 };
 517
 518 static int pyrf_event__setup_types(void)
 519 {
 520         int err;
 521         pyrf_mmap_event__type.tp_new =
 522         pyrf_task_event__type.tp_new =
 523         pyrf_comm_event__type.tp_new =
 524         pyrf_lost_event__type.tp_new =
 525         pyrf_read_event__type.tp_new =
 526         pyrf_sample_event__type.tp_new =
 527         pyrf_context_switch_event__type.tp_new =
 528         pyrf_throttle_event__type.tp_new = PyType_GenericNew;
 529         err = PyType_Ready(&pyrf_mmap_event__type);
 530         if (err < 0)
 531                 goto out;
 532         err = PyType_Ready(&pyrf_lost_event__type);
 533         if (err < 0)
 534                 goto out;
 535         err = PyType_Ready(&pyrf_task_event__type);
 536         if (err < 0)
 537                 goto out;
 538         err = PyType_Ready(&pyrf_comm_event__type);
 539         if (err < 0)
 540                 goto out;
 541         err = PyType_Ready(&pyrf_throttle_event__type);
 542         if (err < 0)
 543                 goto out;
 544         err = PyType_Ready(&pyrf_read_event__type);
 545         if (err < 0)
 546                 goto out;
 547         err = PyType_Ready(&pyrf_sample_event__type);
 548         if (err < 0)
 549                 goto out;
 550         err = PyType_Ready(&pyrf_context_switch_event__type);
 551         if (err < 0)
 552                 goto out;
 553 out:
 554         return err;
 555 }
 556
 557 static PyTypeObject *pyrf_event__type[] = {
 558         [PERF_RECORD_MMAP]       = &pyrf_mmap_event__type,
 559         [PERF_RECORD_LOST]       = &pyrf_lost_event__type,
 560         [PERF_RECORD_COMM]       = &pyrf_comm_event__type,
 561         [PERF_RECORD_EXIT]       = &pyrf_task_event__type,
 562         [PERF_RECORD_THROTTLE]   = &pyrf_throttle_event__type,
 563         [PERF_RECORD_UNTHROTTLE] = &pyrf_throttle_event__type,
 564         [PERF_RECORD_FORK]       = &pyrf_task_event__type,
 565         [PERF_RECORD_READ]       = &pyrf_read_event__type,
 566         [PERF_RECORD_SAMPLE]     = &pyrf_sample_event__type,
 567         [PERF_RECORD_SWITCH]     = &pyrf_context_switch_event__type,
 568         [PERF_RECORD_SWITCH_CPU_WIDE]  = &pyrf_context_switch_event__type,
 569 };
 570
 571 static PyObject *pyrf_event__new(union perf_event *event)
 572 {
 573         struct pyrf_event *pevent;
 574         PyTypeObject *ptype;
 575
 576         if ((event->header.type < PERF_RECORD_MMAP ||
 577              event->header.type > PERF_RECORD_SAMPLE) &&
 578             !(event->header.type == PERF_RECORD_SWITCH ||
 579               event->header.type == PERF_RECORD_SWITCH_CPU_WIDE))
 580                 return NULL;
 581
 582         ptype = pyrf_event__type[event->header.type];
 583         pevent = PyObject_New(struct pyrf_event, ptype);
 584         if (pevent != NULL)
 585                 memcpy(&pevent->event, event, event->header.size);
 586         return (PyObject *)pevent;
 587 }
 588
 589 struct pyrf_cpu_map {
 590         PyObject_HEAD
 591
 592         struct perf_cpu_map *cpus;
 593 };
 594
 595 static int pyrf_cpu_map__init(struct pyrf_cpu_map *pcpus,
 596                               PyObject *args, PyObject *kwargs)
 597 {
 598         static char *kwlist[] = { "cpustr", NULL };
 599         char *cpustr = NULL;
 600
 601         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|s",
 602                                          kwlist, &cpustr))
 603                 return -1;
 604
 605         pcpus->cpus = perf_cpu_map__new(cpustr);
 606         if (pcpus->cpus == NULL)
 607                 return -1;
 608         return 0;
 609 }
 610
 611 static void pyrf_cpu_map__delete(struct pyrf_cpu_map *pcpus)
 612 {
 613         perf_cpu_map__put(pcpus->cpus);
 614         Py_TYPE(pcpus)->tp_free((PyObject*)pcpus);
 615 }
 616
 617 static Py_ssize_t pyrf_cpu_map__length(PyObject *obj)
 618 {
 619         struct pyrf_cpu_map *pcpus = (void *)obj;
 620
 621         return pcpus->cpus->nr;
 622 }
 623
 624 static PyObject *pyrf_cpu_map__item(PyObject *obj, Py_ssize_t i)
 625 {
 626         struct pyrf_cpu_map *pcpus = (void *)obj;
 627
 628         if (i >= pcpus->cpus->nr)
 629                 return NULL;
 630
 631         return Py_BuildValue("i", pcpus->cpus->map[i]);
 632 }
 633
 634 static PySequenceMethods pyrf_cpu_map__sequence_methods = {
 635         .sq_length = pyrf_cpu_map__length,
 636         .sq_item   = pyrf_cpu_map__item,
 637 };
 638
 639 static char pyrf_cpu_map__doc[] = PyDoc_STR("cpu map object.");
 640
 641 static PyTypeObject pyrf_cpu_map__type = {
 642         PyVarObject_HEAD_INIT(NULL, 0)
 643         .tp_name        = "perf.cpu_map",
 644         .tp_basicsize   = sizeof(struct pyrf_cpu_map),
 645         .tp_dealloc     = (destructor)pyrf_cpu_map__delete,
 646         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 647         .tp_doc         = pyrf_cpu_map__doc,
 648         .tp_as_sequence = &pyrf_cpu_map__sequence_methods,
 649         .tp_init        = (initproc)pyrf_cpu_map__init,
 650 };
 651
 652 static int pyrf_cpu_map__setup_types(void)
 653 {
 654         pyrf_cpu_map__type.tp_new = PyType_GenericNew;
 655         return PyType_Ready(&pyrf_cpu_map__type);
 656 }
 657
 658 struct pyrf_thread_map {
 659         PyObject_HEAD
 660
 661         struct perf_thread_map *threads;
 662 };
 663
 664 static int pyrf_thread_map__init(struct pyrf_thread_map *pthreads,
 665                                  PyObject *args, PyObject *kwargs)
 666 {
 667         static char *kwlist[] = { "pid", "tid", "uid", NULL };
 668         int pid = -1, tid = -1, uid = UINT_MAX;
 669
 670         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|iii",
 671                                          kwlist, &pid, &tid, &uid))
 672                 return -1;
 673
 674         pthreads->threads = thread_map__new(pid, tid, uid);
 675         if (pthreads->threads == NULL)
 676                 return -1;
 677         return 0;
 678 }
 679
 680 static void pyrf_thread_map__delete(struct pyrf_thread_map *pthreads)
 681 {
 682         perf_thread_map__put(pthreads->threads);
 683         Py_TYPE(pthreads)->tp_free((PyObject*)pthreads);
 684 }
 685
 686 static Py_ssize_t pyrf_thread_map__length(PyObject *obj)
 687 {
 688         struct pyrf_thread_map *pthreads = (void *)obj;
 689
 690         return pthreads->threads->nr;
 691 }
 692
 693 static PyObject *pyrf_thread_map__item(PyObject *obj, Py_ssize_t i)
 694 {
 695         struct pyrf_thread_map *pthreads = (void *)obj;
 696
 697         if (i >= pthreads->threads->nr)
 698                 return NULL;
 699
 700         return Py_BuildValue("i", pthreads->threads->map[i]);
 701 }
 702
 703 static PySequenceMethods pyrf_thread_map__sequence_methods = {
 704         .sq_length = pyrf_thread_map__length,
 705         .sq_item   = pyrf_thread_map__item,
 706 };
 707
 708 static char pyrf_thread_map__doc[] = PyDoc_STR("thread map object.");
 709
 710 static PyTypeObject pyrf_thread_map__type = {
 711         PyVarObject_HEAD_INIT(NULL, 0)
 712         .tp_name        = "perf.thread_map",
 713         .tp_basicsize   = sizeof(struct pyrf_thread_map),
 714         .tp_dealloc     = (destructor)pyrf_thread_map__delete,
 715         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 716         .tp_doc         = pyrf_thread_map__doc,
 717         .tp_as_sequence = &pyrf_thread_map__sequence_methods,
 718         .tp_init        = (initproc)pyrf_thread_map__init,
 719 };
 720
 721 static int pyrf_thread_map__setup_types(void)
 722 {
 723         pyrf_thread_map__type.tp_new = PyType_GenericNew;
 724         return PyType_Ready(&pyrf_thread_map__type);
 725 }
 726
 727 struct pyrf_evsel {
 728         PyObject_HEAD
 729
 730         struct evsel evsel;
 731 };
 732
 733 static int pyrf_evsel__init(struct pyrf_evsel *pevsel,
 734                             PyObject *args, PyObject *kwargs)
 735 {
 736         struct perf_event_attr attr = {
 737                 .type = PERF_TYPE_HARDWARE,
 738                 .config = PERF_COUNT_HW_CPU_CYCLES,
 739                 .sample_type = PERF_SAMPLE_PERIOD | PERF_SAMPLE_TID,
 740         };
 741         static char *kwlist[] = {
 742                 "type",
 743                 "config",
 744                 "sample_freq",
 745                 "sample_period",
 746                 "sample_type",
 747                 "read_format",
 748                 "disabled",
 749                 "inherit",
 750                 "pinned",
 751                 "exclusive",
 752                 "exclude_user",
 753                 "exclude_kernel",
 754                 "exclude_hv",
 755                 "exclude_idle",
 756                 "mmap",
 757                 "context_switch",
 758                 "comm",
 759                 "freq",
 760                 "inherit_stat",
 761                 "enable_on_exec",
 762                 "task",
 763                 "watermark",
 764                 "precise_ip",
 765                 "mmap_data",
 766                 "sample_id_all",
 767                 "wakeup_events",
 768                 "bp_type",
 769                 "bp_addr",
 770                 "bp_len",
 771                  NULL
 772         };
 773         u64 sample_period = 0;
 774         u32 disabled = 0,
 775             inherit = 0,
 776             pinned = 0,
 777             exclusive = 0,
 778             exclude_user = 0,
 779             exclude_kernel = 0,
 780             exclude_hv = 0,
 781             exclude_idle = 0,
 782             mmap = 0,
 783             context_switch = 0,
 784             comm = 0,
 785             freq = 1,
 786             inherit_stat = 0,
 787             enable_on_exec = 0,
 788             task = 0,
 789             watermark = 0,
 790             precise_ip = 0,
 791             mmap_data = 0,
 792             sample_id_all = 1;
 793         int idx = 0;
 794
 795         if (!PyArg_ParseTupleAndKeywords(args, kwargs,
 796                                          "|iKiKKiiiiiiiiiiiiiiiiiiiiiiKK", kwlist,
 797                                          &attr.type, &attr.config, &attr.sample_freq,
 798                                          &sample_period, &attr.sample_type,
 799                                          &attr.read_format, &disabled, &inherit,
 800                                          &pinned, &exclusive, &exclude_user,
 801                                          &exclude_kernel, &exclude_hv, &exclude_idle,
 802                                          &mmap, &context_switch, &comm, &freq, &inherit_stat,
 803                                          &enable_on_exec, &task, &watermark,
 804                                          &precise_ip, &mmap_data, &sample_id_all,
 805                                          &attr.wakeup_events, &attr.bp_type,
 806                                          &attr.bp_addr, &attr.bp_len, &idx))
 807                 return -1;
 808
 809         /* union... */
 810         if (sample_period != 0) {
 811                 if (attr.sample_freq != 0)
 812                         return -1; /* FIXME: throw right exception */
 813                 attr.sample_period = sample_period;
 814         }
 815
 816         /* Bitfields */
 817         attr.disabled       = disabled;
 818         attr.inherit        = inherit;
 819         attr.pinned         = pinned;
 820         attr.exclusive      = exclusive;
 821         attr.exclude_user   = exclude_user;
 822         attr.exclude_kernel = exclude_kernel;
 823         attr.exclude_hv     = exclude_hv;
 824         attr.exclude_idle   = exclude_idle;
 825         attr.mmap           = mmap;
 826         attr.context_switch = context_switch;
 827         attr.comm           = comm;
 828         attr.freq           = freq;
 829         attr.inherit_stat   = inherit_stat;
 830         attr.enable_on_exec = enable_on_exec;
 831         attr.task           = task;
 832         attr.watermark      = watermark;
 833         attr.precise_ip     = precise_ip;
 834         attr.mmap_data      = mmap_data;
 835         attr.sample_id_all  = sample_id_all;
 836         attr.size           = sizeof(attr);
 837
 838         evsel__init(&pevsel->evsel, &attr, idx);
 839         return 0;
 840 }
 841
 842 static void pyrf_evsel__delete(struct pyrf_evsel *pevsel)
 843 {
 844         evsel__exit(&pevsel->evsel);
 845         Py_TYPE(pevsel)->tp_free((PyObject*)pevsel);
 846 }
 847
 848 static PyObject *pyrf_evsel__open(struct pyrf_evsel *pevsel,
 849                                   PyObject *args, PyObject *kwargs)
 850 {
 851         struct evsel *evsel = &pevsel->evsel;
 852         struct perf_cpu_map *cpus = NULL;
 853         struct perf_thread_map *threads = NULL;
 854         PyObject *pcpus = NULL, *pthreads = NULL;
 855         int group = 0, inherit = 0;
 856         static char *kwlist[] = { "cpus", "threads", "group", "inherit", NULL };
 857
 858         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|OOii", kwlist,
 859                                          &pcpus, &pthreads, &group, &inherit))
 860                 return NULL;
 861
 862         if (pthreads != NULL)
 863                 threads = ((struct pyrf_thread_map *)pthreads)->threads;
 864
 865         if (pcpus != NULL)
 866                 cpus = ((struct pyrf_cpu_map *)pcpus)->cpus;
 867
 868         evsel->core.attr.inherit = inherit;
 869         /*
 870          * This will group just the fds for this single evsel, to group
 871          * multiple events, use evlist.open().
 872          */
 873         if (evsel__open(evsel, cpus, threads) < 0) {
 874                 PyErr_SetFromErrno(PyExc_OSError);
 875                 return NULL;
 876         }
 877
 878         Py_INCREF(Py_None);
 879         return Py_None;
 880 }
 881
 882 static PyMethodDef pyrf_evsel__methods[] = {
 883         {
 884                 .ml_name  = "open",
 885                 .ml_meth  = (PyCFunction)pyrf_evsel__open,
 886                 .ml_flags = METH_VARARGS | METH_KEYWORDS,
 887                 .ml_doc   = PyDoc_STR("open the event selector file descriptor table.")
 888         },
 889         { .ml_name = NULL, }
 890 };
 891
 892 static char pyrf_evsel__doc[] = PyDoc_STR("perf event selector list object.");
 893
 894 static PyTypeObject pyrf_evsel__type = {
 895         PyVarObject_HEAD_INIT(NULL, 0)
 896         .tp_name        = "perf.evsel",
 897         .tp_basicsize   = sizeof(struct pyrf_evsel),
 898         .tp_dealloc     = (destructor)pyrf_evsel__delete,
 899         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 900         .tp_doc         = pyrf_evsel__doc,
 901         .tp_methods     = pyrf_evsel__methods,
 902         .tp_init        = (initproc)pyrf_evsel__init,
 903 };
 904
 905 static int pyrf_evsel__setup_types(void)
 906 {
 907         pyrf_evsel__type.tp_new = PyType_GenericNew;
 908         return PyType_Ready(&pyrf_evsel__type);
 909 }
 910
 911 struct pyrf_evlist {
 912         PyObject_HEAD
 913
 914         struct evlist evlist;
 915 };
 916
 917 static int pyrf_evlist__init(struct pyrf_evlist *pevlist,
 918                              PyObject *args, PyObject *kwargs __maybe_unused)
 919 {
 920         PyObject *pcpus = NULL, *pthreads = NULL;
 921         struct perf_cpu_map *cpus;
 922         struct perf_thread_map *threads;
 923
 924         if (!PyArg_ParseTuple(args, "OO", &pcpus, &pthreads))
 925                 return -1;
 926
 927         threads = ((struct pyrf_thread_map *)pthreads)->threads;
 928         cpus = ((struct pyrf_cpu_map *)pcpus)->cpus;
 929         evlist__init(&pevlist->evlist, cpus, threads);
 930         return 0;
 931 }
 932
 933 static void pyrf_evlist__delete(struct pyrf_evlist *pevlist)
 934 {
 935         evlist__exit(&pevlist->evlist);
 936         Py_TYPE(pevlist)->tp_free((PyObject*)pevlist);
 937 }
 938
 939 static PyObject *pyrf_evlist__mmap(struct pyrf_evlist *pevlist,
 940                                    PyObject *args, PyObject *kwargs)
 941 {
 942         struct evlist *evlist = &pevlist->evlist;
 943         static char *kwlist[] = { "pages", "overwrite", NULL };
 944         int pages = 128, overwrite = false;
 945
 946         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|ii", kwlist,
 947                                          &pages, &overwrite))
 948                 return NULL;
 949
 950         if (evlist__mmap(evlist, pages) < 0) {
 951                 PyErr_SetFromErrno(PyExc_OSError);
 952                 return NULL;
 953         }
 954
 955         Py_INCREF(Py_None);
 956         return Py_None;
 957 }
 958
 959 static PyObject *pyrf_evlist__poll(struct pyrf_evlist *pevlist,
 960                                    PyObject *args, PyObject *kwargs)
 961 {
 962         struct evlist *evlist = &pevlist->evlist;
 963         static char *kwlist[] = { "timeout", NULL };
 964         int timeout = -1, n;
 965
 966         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|i", kwlist, &timeout))
 967                 return NULL;
 968
 969         n = evlist__poll(evlist, timeout);
 970         if (n < 0) {
 971                 PyErr_SetFromErrno(PyExc_OSError);
 972                 return NULL;
 973         }
 974
 975         return Py_BuildValue("i", n);
 976 }
 977
 978 static PyObject *pyrf_evlist__get_pollfd(struct pyrf_evlist *pevlist,
 979                                          PyObject *args __maybe_unused,
 980                                          PyObject *kwargs __maybe_unused)
 981 {
 982         struct evlist *evlist = &pevlist->evlist;
 983         PyObject *list = PyList_New(0);
 984         int i;
 985
 986         for (i = 0; i < evlist->core.pollfd.nr; ++i) {
 987                 PyObject *file;
 988 #if PY_MAJOR_VERSION < 3
 989                 FILE *fp = fdopen(evlist->core.pollfd.entries[i].fd, "r");
 990
 991                 if (fp == NULL)
 992                         goto free_list;
 993
 994                 file = PyFile_FromFile(fp, "perf", "r", NULL);
 995 #else
 996                 file = PyFile_FromFd(evlist->core.pollfd.entries[i].fd, "perf", "r", -1,
 997                                      NULL, NULL, NULL, 0);
 998 #endif
 999                 if (file == NULL)
1000                         goto free_list;
1001
1002                 if (PyList_Append(list, file) != 0) {
1003                         Py_DECREF(file);
1004                         goto free_list;
1005                 }
1006
1007                 Py_DECREF(file);
1008         }
1009
1010         return list;
1011 free_list:
1012         return PyErr_NoMemory();
1013 }
1014
1015
1016 static PyObject *pyrf_evlist__add(struct pyrf_evlist *pevlist,
1017                                   PyObject *args,
1018                                   PyObject *kwargs __maybe_unused)
1019 {
1020         struct evlist *evlist = &pevlist->evlist;
1021         PyObject *pevsel;
1022         struct evsel *evsel;
1023
1024         if (!PyArg_ParseTuple(args, "O", &pevsel))
1025                 return NULL;
1026
1027         Py_INCREF(pevsel);
1028         evsel = &((struct pyrf_evsel *)pevsel)->evsel;
1029         evsel->idx = evlist->core.nr_entries;
1030         evlist__add(evlist, evsel);
1031
1032         return Py_BuildValue("i", evlist->core.nr_entries);
1033 }
1034
1035 static struct mmap *get_md(struct evlist *evlist, int cpu)
1036 {
1037         int i;
1038
1039         for (i = 0; i < evlist->core.nr_mmaps; i++) {
1040                 struct mmap *md = &evlist->mmap[i];
1041
1042                 if (md->core.cpu == cpu)
1043                         return md;
1044         }
1045
1046         return NULL;
1047 }
1048
1049 static PyObject *pyrf_evlist__read_on_cpu(struct pyrf_evlist *pevlist,
1050                                           PyObject *args, PyObject *kwargs)
1051 {
1052         struct evlist *evlist = &pevlist->evlist;
1053         union perf_event *event;
1054         int sample_id_all = 1, cpu;
1055         static char *kwlist[] = { "cpu", "sample_id_all", NULL };
1056         struct mmap *md;
1057         int err;
1058
1059         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "i|i", kwlist,
1060                                          &cpu, &sample_id_all))
1061                 return NULL;
1062
1063         md = get_md(evlist, cpu);
1064         if (!md)
1065                 return NULL;
1066
1067         if (perf_mmap__read_init(&md->core) < 0)
1068                 goto end;
1069
1070         event = perf_mmap__read_event(&md->core);
1071         if (event != NULL) {
1072                 PyObject *pyevent = pyrf_event__new(event);
1073                 struct pyrf_event *pevent = (struct pyrf_event *)pyevent;
1074                 struct evsel *evsel;
1075
1076                 if (pyevent == NULL)
1077                         return PyErr_NoMemory();
1078
1079                 evsel = evlist__event2evsel(evlist, event);
1080                 if (!evsel) {
1081                         Py_INCREF(Py_None);
1082                         return Py_None;
1083                 }
1084
1085                 pevent->evsel = evsel;
1086
1087                 err = evsel__parse_sample(evsel, event, &pevent->sample);
1088
1089                 /* Consume the even only after we parsed it out. */
1090                 perf_mmap__consume(&md->core);
1091
1092                 if (err)
1093                         return PyErr_Format(PyExc_OSError,
1094                                             "perf: can't parse sample, err=%d", err);
1095                 return pyevent;
1096         }
1097 end:
1098         Py_INCREF(Py_None);
1099         return Py_None;
1100 }
1101
1102 static PyObject *pyrf_evlist__open(struct pyrf_evlist *pevlist,
1103                                    PyObject *args, PyObject *kwargs)
1104 {
1105         struct evlist *evlist = &pevlist->evlist;
1106         int group = 0;
1107         static char *kwlist[] = { "group", NULL };
1108
1109         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|OOii", kwlist, &group))
1110                 return NULL;
1111
1112         if (group)
1113                 evlist__set_leader(evlist);
1114
1115         if (evlist__open(evlist) < 0) {
1116                 PyErr_SetFromErrno(PyExc_OSError);
1117                 return NULL;
1118         }
1119
1120         Py_INCREF(Py_None);
1121         return Py_None;
1122 }
1123
1124 static PyMethodDef pyrf_evlist__methods[] = {
1125         {
1126                 .ml_name  = "mmap",
1127                 .ml_meth  = (PyCFunction)pyrf_evlist__mmap,
1128                 .ml_flags = METH_VARARGS | METH_KEYWORDS,
1129                 .ml_doc   = PyDoc_STR("mmap the file descriptor table.")
1130         },
1131         {
1132                 .ml_name  = "open",
1133                 .ml_meth  = (PyCFunction)pyrf_evlist__open,
1134                 .ml_flags = METH_VARARGS | METH_KEYWORDS,
1135                 .ml_doc   = PyDoc_STR("open the file descriptors.")
1136         },
1137         {
1138                 .ml_name  = "poll",
1139                 .ml_meth  = (PyCFunction)pyrf_evlist__poll,
1140                 .ml_flags = METH_VARARGS | METH_KEYWORDS,
1141                 .ml_doc   = PyDoc_STR("poll the file descriptor table.")
1142         },
1143         {
1144                 .ml_name  = "get_pollfd",
1145                 .ml_meth  = (PyCFunction)pyrf_evlist__get_pollfd,
1146                 .ml_flags = METH_VARARGS | METH_KEYWORDS,
1147                 .ml_doc   = PyDoc_STR("get the poll file descriptor table.")
1148         },
1149         {
1150                 .ml_name  = "add",
1151                 .ml_meth  = (PyCFunction)pyrf_evlist__add,
1152                 .ml_flags = METH_VARARGS | METH_KEYWORDS,
1153                 .ml_doc   = PyDoc_STR("adds an event selector to the list.")
1154         },
1155         {
1156                 .ml_name  = "read_on_cpu",
1157                 .ml_meth  = (PyCFunction)pyrf_evlist__read_on_cpu,
1158                 .ml_flags = METH_VARARGS | METH_KEYWORDS,
1159                 .ml_doc   = PyDoc_STR("reads an event.")
1160         },
1161         { .ml_name = NULL, }
1162 };
1163
1164 static Py_ssize_t pyrf_evlist__length(PyObject *obj)
1165 {
1166         struct pyrf_evlist *pevlist = (void *)obj;
1167
1168         return pevlist->evlist.core.nr_entries;
1169 }
1170
1171 static PyObject *pyrf_evlist__item(PyObject *obj, Py_ssize_t i)
1172 {
1173         struct pyrf_evlist *pevlist = (void *)obj;
1174         struct evsel *pos;
1175
1176         if (i >= pevlist->evlist.core.nr_entries)
1177                 return NULL;
1178
1179         evlist__for_each_entry(&pevlist->evlist, pos) {
1180                 if (i-- == 0)
1181                         break;
1182         }
1183
1184         return Py_BuildValue("O", container_of(pos, struct pyrf_evsel, evsel));
1185 }
1186
1187 static PySequenceMethods pyrf_evlist__sequence_methods = {
1188         .sq_length = pyrf_evlist__length,
1189         .sq_item   = pyrf_evlist__item,
1190 };
1191
1192 static char pyrf_evlist__doc[] = PyDoc_STR("perf event selector list object.");
1193
1194 static PyTypeObject pyrf_evlist__type = {
1195         PyVarObject_HEAD_INIT(NULL, 0)
1196         .tp_name        = "perf.evlist",
1197         .tp_basicsize   = sizeof(struct pyrf_evlist),
1198         .tp_dealloc     = (destructor)pyrf_evlist__delete,
1199         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
1200         .tp_as_sequence = &pyrf_evlist__sequence_methods,
1201         .tp_doc         = pyrf_evlist__doc,
1202         .tp_methods     = pyrf_evlist__methods,
1203         .tp_init        = (initproc)pyrf_evlist__init,
1204 };
1205
1206 static int pyrf_evlist__setup_types(void)
1207 {
1208         pyrf_evlist__type.tp_new = PyType_GenericNew;
1209         return PyType_Ready(&pyrf_evlist__type);
1210 }
1211
1212 #define PERF_CONST(name) { #name, PERF_##name }
1213
1214 static struct {
1215         const char *name;
1216         int         value;
1217 } perf__constants[] = {
1218         PERF_CONST(TYPE_HARDWARE),
1219         PERF_CONST(TYPE_SOFTWARE),
1220         PERF_CONST(TYPE_TRACEPOINT),
1221         PERF_CONST(TYPE_HW_CACHE),
1222         PERF_CONST(TYPE_RAW),
1223         PERF_CONST(TYPE_BREAKPOINT),
1224
1225         PERF_CONST(COUNT_HW_CPU_CYCLES),
1226         PERF_CONST(COUNT_HW_INSTRUCTIONS),
1227         PERF_CONST(COUNT_HW_CACHE_REFERENCES),
1228         PERF_CONST(COUNT_HW_CACHE_MISSES),
1229         PERF_CONST(COUNT_HW_BRANCH_INSTRUCTIONS),
1230         PERF_CONST(COUNT_HW_BRANCH_MISSES),
1231         PERF_CONST(COUNT_HW_BUS_CYCLES),
1232         PERF_CONST(COUNT_HW_CACHE_L1D),
1233         PERF_CONST(COUNT_HW_CACHE_L1I),
1234         PERF_CONST(COUNT_HW_CACHE_LL),
1235         PERF_CONST(COUNT_HW_CACHE_DTLB),
1236         PERF_CONST(COUNT_HW_CACHE_ITLB),
1237         PERF_CONST(COUNT_HW_CACHE_BPU),
1238         PERF_CONST(COUNT_HW_CACHE_OP_READ),
1239         PERF_CONST(COUNT_HW_CACHE_OP_WRITE),
1240         PERF_CONST(COUNT_HW_CACHE_OP_PREFETCH),
1241         PERF_CONST(COUNT_HW_CACHE_RESULT_ACCESS),
1242         PERF_CONST(COUNT_HW_CACHE_RESULT_MISS),
1243
1244         PERF_CONST(COUNT_HW_STALLED_CYCLES_FRONTEND),
1245         PERF_CONST(COUNT_HW_STALLED_CYCLES_BACKEND),
1246
1247         PERF_CONST(COUNT_SW_CPU_CLOCK),
1248         PERF_CONST(COUNT_SW_TASK_CLOCK),
1249         PERF_CONST(COUNT_SW_PAGE_FAULTS),
1250         PERF_CONST(COUNT_SW_CONTEXT_SWITCHES),
1251         PERF_CONST(COUNT_SW_CPU_MIGRATIONS),
1252         PERF_CONST(COUNT_SW_PAGE_FAULTS_MIN),
1253         PERF_CONST(COUNT_SW_PAGE_FAULTS_MAJ),
1254         PERF_CONST(COUNT_SW_ALIGNMENT_FAULTS),
1255         PERF_CONST(COUNT_SW_EMULATION_FAULTS),
1256         PERF_CONST(COUNT_SW_DUMMY),
1257
1258         PERF_CONST(SAMPLE_IP),
1259         PERF_CONST(SAMPLE_TID),
1260         PERF_CONST(SAMPLE_TIME),
1261         PERF_CONST(SAMPLE_ADDR),
1262         PERF_CONST(SAMPLE_READ),
1263         PERF_CONST(SAMPLE_CALLCHAIN),
1264         PERF_CONST(SAMPLE_ID),
1265         PERF_CONST(SAMPLE_CPU),
1266         PERF_CONST(SAMPLE_PERIOD),
1267         PERF_CONST(SAMPLE_STREAM_ID),
1268         PERF_CONST(SAMPLE_RAW),
1269
1270         PERF_CONST(FORMAT_TOTAL_TIME_ENABLED),
1271         PERF_CONST(FORMAT_TOTAL_TIME_RUNNING),
1272         PERF_CONST(FORMAT_ID),
1273         PERF_CONST(FORMAT_GROUP),
1274
1275         PERF_CONST(RECORD_MMAP),
1276         PERF_CONST(RECORD_LOST),
1277         PERF_CONST(RECORD_COMM),
1278         PERF_CONST(RECORD_EXIT),
1279         PERF_CONST(RECORD_THROTTLE),
1280         PERF_CONST(RECORD_UNTHROTTLE),
1281         PERF_CONST(RECORD_FORK),
1282         PERF_CONST(RECORD_READ),
1283         PERF_CONST(RECORD_SAMPLE),
1284         PERF_CONST(RECORD_MMAP2),
1285         PERF_CONST(RECORD_AUX),
1286         PERF_CONST(RECORD_ITRACE_START),
1287         PERF_CONST(RECORD_LOST_SAMPLES),
1288         PERF_CONST(RECORD_SWITCH),
1289         PERF_CONST(RECORD_SWITCH_CPU_WIDE),
1290
1291         PERF_CONST(RECORD_MISC_SWITCH_OUT),
1292         { .name = NULL, },
1293 };
1294
1295 static PyObject *pyrf__tracepoint(struct pyrf_evsel *pevsel,
1296                                   PyObject *args, PyObject *kwargs)
1297 {
1298         struct tep_event *tp_format;
1299         static char *kwlist[] = { "sys", "name", NULL };
1300         char *sys  = NULL;
1301         char *name = NULL;
1302
1303         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|ss", kwlist,
1304                                          &sys, &name))
1305                 return NULL;
1306
1307         tp_format = trace_event__tp_format(sys, name);
1308         if (IS_ERR(tp_format))
1309                 return _PyLong_FromLong(-1);
1310
1311         return _PyLong_FromLong(tp_format->id);
1312 }
1313
1314 static PyMethodDef perf__methods[] = {
1315         {
1316                 .ml_name  = "tracepoint",
1317                 .ml_meth  = (PyCFunction) pyrf__tracepoint,
1318                 .ml_flags = METH_VARARGS | METH_KEYWORDS,
1319                 .ml_doc   = PyDoc_STR("Get tracepoint config.")
1320         },
1321         { .ml_name = NULL, }
1322 };
1323
1324 #if PY_MAJOR_VERSION < 3
1325 PyMODINIT_FUNC initperf(void)
1326 #else
1327 PyMODINIT_FUNC PyInit_perf(void)
1328 #endif
1329 {
1330         PyObject *obj;
1331         int i;
1332         PyObject *dict;
1333 #if PY_MAJOR_VERSION < 3
1334         PyObject *module = Py_InitModule("perf", perf__methods);
1335 #else
1336         static struct PyModuleDef moduledef = {
1337                 PyModuleDef_HEAD_INIT,
1338                 "perf",                 /* m_name */
1339                 "",                     /* m_doc */
1340                 -1,                     /* m_size */
1341                 perf__methods,          /* m_methods */
1342                 NULL,                   /* m_reload */
1343                 NULL,                   /* m_traverse */
1344                 NULL,                   /* m_clear */
1345                 NULL,                   /* m_free */
1346         };
1347         PyObject *module = PyModule_Create(&moduledef);
1348 #endif
1349
1350         if (module == NULL ||
1351             pyrf_event__setup_types() < 0 ||
1352             pyrf_evlist__setup_types() < 0 ||
1353             pyrf_evsel__setup_types() < 0 ||
1354             pyrf_thread_map__setup_types() < 0 ||
1355             pyrf_cpu_map__setup_types() < 0)
1356 #if PY_MAJOR_VERSION < 3
1357                 return;
1358 #else
1359                 return module;
1360 #endif
1361
1362         /* The page_size is placed in util object. */
1363         page_size = sysconf(_SC_PAGE_SIZE);
1364
1365         Py_INCREF(&pyrf_evlist__type);
1366         PyModule_AddObject(module, "evlist", (PyObject*)&pyrf_evlist__type);
1367
1368         Py_INCREF(&pyrf_evsel__type);
1369         PyModule_AddObject(module, "evsel", (PyObject*)&pyrf_evsel__type);
1370
1371         Py_INCREF(&pyrf_mmap_event__type);
1372         PyModule_AddObject(module, "mmap_event", (PyObject *)&pyrf_mmap_event__type);
1373
1374         Py_INCREF(&pyrf_lost_event__type);
1375         PyModule_AddObject(module, "lost_event", (PyObject *)&pyrf_lost_event__type);
1376
1377         Py_INCREF(&pyrf_comm_event__type);
1378         PyModule_AddObject(module, "comm_event", (PyObject *)&pyrf_comm_event__type);
1379
1380         Py_INCREF(&pyrf_task_event__type);
1381         PyModule_AddObject(module, "task_event", (PyObject *)&pyrf_task_event__type);
1382
1383         Py_INCREF(&pyrf_throttle_event__type);
1384         PyModule_AddObject(module, "throttle_event", (PyObject *)&pyrf_throttle_event__type);
1385
1386         Py_INCREF(&pyrf_task_event__type);
1387         PyModule_AddObject(module, "task_event", (PyObject *)&pyrf_task_event__type);
1388
1389         Py_INCREF(&pyrf_read_event__type);
1390         PyModule_AddObject(module, "read_event", (PyObject *)&pyrf_read_event__type);
1391
1392         Py_INCREF(&pyrf_sample_event__type);
1393         PyModule_AddObject(module, "sample_event", (PyObject *)&pyrf_sample_event__type);
1394
1395         Py_INCREF(&pyrf_context_switch_event__type);
1396         PyModule_AddObject(module, "switch_event", (PyObject *)&pyrf_context_switch_event__type);
1397
1398         Py_INCREF(&pyrf_thread_map__type);
1399         PyModule_AddObject(module, "thread_map", (PyObject*)&pyrf_thread_map__type);
1400
1401         Py_INCREF(&pyrf_cpu_map__type);
1402         PyModule_AddObject(module, "cpu_map", (PyObject*)&pyrf_cpu_map__type);
1403
1404         dict = PyModule_GetDict(module);
1405         if (dict == NULL)
1406                 goto error;
1407
1408         for (i = 0; perf__constants[i].name != NULL; i++) {
1409                 obj = _PyLong_FromLong(perf__constants[i].value);
1410                 if (obj == NULL)
1411                         goto error;
1412                 PyDict_SetItemString(dict, perf__constants[i].name, obj);
1413                 Py_DECREF(obj);
1414         }
1415
1416 error:
1417         if (PyErr_Occurred())
1418                 PyErr_SetString(PyExc_ImportError, "perf: Init failed!");
1419 #if PY_MAJOR_VERSION >= 3
1420         return module;
1421 #endif
1422 }
1423
1424 /*
1425  * Dummy, to avoid dragging all the test_attr infrastructure in the python
1426  * binding.
1427  */
1428 void test_attr__open(struct perf_event_attr *attr, pid_t pid, int cpu,
1429                      int fd, int group_fd, unsigned long flags)
1430 {
1431 }