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 these not to drag util/env.c
  62  */
  63 struct perf_env perf_env;
  64
  65 const char *perf_env__cpuid(struct perf_env *env __maybe_unused)
  66 {
  67         return NULL;
  68 }
  69
  70 // This one is a bit easier, wouldn't drag too much, but leave it as a stub we need it here
  71 const char *perf_env__arch(struct perf_env *env __maybe_unused)
  72 {
  73         return NULL;
  74 }
  75
  76 /*
  77  * Add this one here not to drag util/stat-shadow.c
  78  */
  79 void perf_stat__collect_metric_expr(struct evlist *evsel_list)
  80 {
  81 }
  82
  83 /*
  84  * This one is needed not to drag the PMU bandwagon, jevents generated
  85  * pmu_sys_event_tables, etc and evsel__find_pmu() is used so far just for
  86  * doing per PMU perf_event_attr.exclude_guest handling, not really needed, so
  87  * far, for the perf python binding known usecases, revisit if this become
  88  * necessary.
  89  */
  90 struct perf_pmu *evsel__find_pmu(struct evsel *evsel __maybe_unused)
  91 {
  92         return NULL;
  93 }
  94
  95 /*
  96  * Add this one here not to drag util/metricgroup.c
  97  */
  98 int metricgroup__copy_metric_events(struct evlist *evlist, struct cgroup *cgrp,
  99                                     struct rblist *new_metric_events,
 100                                     struct rblist *old_metric_events)
 101 {
 102         return 0;
 103 }
 104
 105 /*
 106  * XXX: All these evsel destructors need some better mechanism, like a linked
 107  * list of destructors registered when the relevant code indeed is used instead
 108  * of having more and more calls in perf_evsel__delete(). -- acme
 109  *
 110  * For now, add some more:
 111  *
 112  * Not to drag the BPF bandwagon...
 113  */
 114 void bpf_counter__destroy(struct evsel *evsel);
 115 int bpf_counter__install_pe(struct evsel *evsel, int cpu, int fd);
 116 int bpf_counter__disable(struct evsel *evsel);
 117
 118 void bpf_counter__destroy(struct evsel *evsel __maybe_unused)
 119 {
 120 }
 121
 122 int bpf_counter__install_pe(struct evsel *evsel __maybe_unused, int cpu __maybe_unused, int fd __maybe_unused)
 123 {
 124         return 0;
 125 }
 126
 127 int bpf_counter__disable(struct evsel *evsel __maybe_unused)
 128 {
 129         return 0;
 130 }
 131
 132 /*
 133  * Support debug printing even though util/debug.c is not linked.  That means
 134  * implementing 'verbose' and 'eprintf'.
 135  */
 136 int verbose;
 137 int debug_peo_args;
 138
 139 int eprintf(int level, int var, const char *fmt, ...);
 140
 141 int eprintf(int level, int var, const char *fmt, ...)
 142 {
 143         va_list args;
 144         int ret = 0;
 145
 146         if (var >= level) {
 147                 va_start(args, fmt);
 148                 ret = vfprintf(stderr, fmt, args);
 149                 va_end(args);
 150         }
 151
 152         return ret;
 153 }
 154
 155 /* Define PyVarObject_HEAD_INIT for python 2.5 */
 156 #ifndef PyVarObject_HEAD_INIT
 157 # define PyVarObject_HEAD_INIT(type, size) PyObject_HEAD_INIT(type) size,
 158 #endif
 159
 160 #if PY_MAJOR_VERSION < 3
 161 PyMODINIT_FUNC initperf(void);
 162 #else
 163 PyMODINIT_FUNC PyInit_perf(void);
 164 #endif
 165
 166 #define member_def(type, member, ptype, help) \
 167         { #member, ptype, \
 168           offsetof(struct pyrf_event, event) + offsetof(struct type, member), \
 169           0, help }
 170
 171 #define sample_member_def(name, member, ptype, help) \
 172         { #name, ptype, \
 173           offsetof(struct pyrf_event, sample) + offsetof(struct perf_sample, member), \
 174           0, help }
 175
 176 struct pyrf_event {
 177         PyObject_HEAD
 178         struct evsel *evsel;
 179         struct perf_sample sample;
 180         union perf_event   event;
 181 };
 182
 183 #define sample_members \
 184         sample_member_def(sample_ip, ip, T_ULONGLONG, "event type"),                     \
 185         sample_member_def(sample_pid, pid, T_INT, "event pid"),                  \
 186         sample_member_def(sample_tid, tid, T_INT, "event tid"),                  \
 187         sample_member_def(sample_time, time, T_ULONGLONG, "event timestamp"),            \
 188         sample_member_def(sample_addr, addr, T_ULONGLONG, "event addr"),                 \
 189         sample_member_def(sample_id, id, T_ULONGLONG, "event id"),                       \
 190         sample_member_def(sample_stream_id, stream_id, T_ULONGLONG, "event stream id"), \
 191         sample_member_def(sample_period, period, T_ULONGLONG, "event period"),           \
 192         sample_member_def(sample_cpu, cpu, T_UINT, "event cpu"),
 193
 194 static char pyrf_mmap_event__doc[] = PyDoc_STR("perf mmap event object.");
 195
 196 static PyMemberDef pyrf_mmap_event__members[] = {
 197         sample_members
 198         member_def(perf_event_header, type, T_UINT, "event type"),
 199         member_def(perf_event_header, misc, T_UINT, "event misc"),
 200         member_def(perf_record_mmap, pid, T_UINT, "event pid"),
 201         member_def(perf_record_mmap, tid, T_UINT, "event tid"),
 202         member_def(perf_record_mmap, start, T_ULONGLONG, "start of the map"),
 203         member_def(perf_record_mmap, len, T_ULONGLONG, "map length"),
 204         member_def(perf_record_mmap, pgoff, T_ULONGLONG, "page offset"),
 205         member_def(perf_record_mmap, filename, T_STRING_INPLACE, "backing store"),
 206         { .name = NULL, },
 207 };
 208
 209 static PyObject *pyrf_mmap_event__repr(struct pyrf_event *pevent)
 210 {
 211         PyObject *ret;
 212         char *s;
 213
 214         if (asprintf(&s, "{ type: mmap, pid: %u, tid: %u, start: %#" PRI_lx64 ", "
 215                          "length: %#" PRI_lx64 ", offset: %#" PRI_lx64 ", "
 216                          "filename: %s }",
 217                      pevent->event.mmap.pid, pevent->event.mmap.tid,
 218                      pevent->event.mmap.start, pevent->event.mmap.len,
 219                      pevent->event.mmap.pgoff, pevent->event.mmap.filename) < 0) {
 220                 ret = PyErr_NoMemory();
 221         } else {
 222                 ret = _PyUnicode_FromString(s);
 223                 free(s);
 224         }
 225         return ret;
 226 }
 227
 228 static PyTypeObject pyrf_mmap_event__type = {
 229         PyVarObject_HEAD_INIT(NULL, 0)
 230         .tp_name        = "perf.mmap_event",
 231         .tp_basicsize   = sizeof(struct pyrf_event),
 232         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 233         .tp_doc         = pyrf_mmap_event__doc,
 234         .tp_members     = pyrf_mmap_event__members,
 235         .tp_repr        = (reprfunc)pyrf_mmap_event__repr,
 236 };
 237
 238 static char pyrf_task_event__doc[] = PyDoc_STR("perf task (fork/exit) event object.");
 239
 240 static PyMemberDef pyrf_task_event__members[] = {
 241         sample_members
 242         member_def(perf_event_header, type, T_UINT, "event type"),
 243         member_def(perf_record_fork, pid, T_UINT, "event pid"),
 244         member_def(perf_record_fork, ppid, T_UINT, "event ppid"),
 245         member_def(perf_record_fork, tid, T_UINT, "event tid"),
 246         member_def(perf_record_fork, ptid, T_UINT, "event ptid"),
 247         member_def(perf_record_fork, time, T_ULONGLONG, "timestamp"),
 248         { .name = NULL, },
 249 };
 250
 251 static PyObject *pyrf_task_event__repr(struct pyrf_event *pevent)
 252 {
 253         return _PyUnicode_FromFormat("{ type: %s, pid: %u, ppid: %u, tid: %u, "
 254                                    "ptid: %u, time: %" PRI_lu64 "}",
 255                                    pevent->event.header.type == PERF_RECORD_FORK ? "fork" : "exit",
 256                                    pevent->event.fork.pid,
 257                                    pevent->event.fork.ppid,
 258                                    pevent->event.fork.tid,
 259                                    pevent->event.fork.ptid,
 260                                    pevent->event.fork.time);
 261 }
 262
 263 static PyTypeObject pyrf_task_event__type = {
 264         PyVarObject_HEAD_INIT(NULL, 0)
 265         .tp_name        = "perf.task_event",
 266         .tp_basicsize   = sizeof(struct pyrf_event),
 267         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 268         .tp_doc         = pyrf_task_event__doc,
 269         .tp_members     = pyrf_task_event__members,
 270         .tp_repr        = (reprfunc)pyrf_task_event__repr,
 271 };
 272
 273 static char pyrf_comm_event__doc[] = PyDoc_STR("perf comm event object.");
 274
 275 static PyMemberDef pyrf_comm_event__members[] = {
 276         sample_members
 277         member_def(perf_event_header, type, T_UINT, "event type"),
 278         member_def(perf_record_comm, pid, T_UINT, "event pid"),
 279         member_def(perf_record_comm, tid, T_UINT, "event tid"),
 280         member_def(perf_record_comm, comm, T_STRING_INPLACE, "process name"),
 281         { .name = NULL, },
 282 };
 283
 284 static PyObject *pyrf_comm_event__repr(struct pyrf_event *pevent)
 285 {
 286         return _PyUnicode_FromFormat("{ type: comm, pid: %u, tid: %u, comm: %s }",
 287                                    pevent->event.comm.pid,
 288                                    pevent->event.comm.tid,
 289                                    pevent->event.comm.comm);
 290 }
 291
 292 static PyTypeObject pyrf_comm_event__type = {
 293         PyVarObject_HEAD_INIT(NULL, 0)
 294         .tp_name        = "perf.comm_event",
 295         .tp_basicsize   = sizeof(struct pyrf_event),
 296         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 297         .tp_doc         = pyrf_comm_event__doc,
 298         .tp_members     = pyrf_comm_event__members,
 299         .tp_repr        = (reprfunc)pyrf_comm_event__repr,
 300 };
 301
 302 static char pyrf_throttle_event__doc[] = PyDoc_STR("perf throttle event object.");
 303
 304 static PyMemberDef pyrf_throttle_event__members[] = {
 305         sample_members
 306         member_def(perf_event_header, type, T_UINT, "event type"),
 307         member_def(perf_record_throttle, time, T_ULONGLONG, "timestamp"),
 308         member_def(perf_record_throttle, id, T_ULONGLONG, "event id"),
 309         member_def(perf_record_throttle, stream_id, T_ULONGLONG, "event stream id"),
 310         { .name = NULL, },
 311 };
 312
 313 static PyObject *pyrf_throttle_event__repr(struct pyrf_event *pevent)
 314 {
 315         struct perf_record_throttle *te = (struct perf_record_throttle *)(&pevent->event.header + 1);
 316
 317         return _PyUnicode_FromFormat("{ type: %sthrottle, time: %" PRI_lu64 ", id: %" PRI_lu64
 318                                    ", stream_id: %" PRI_lu64 " }",
 319                                    pevent->event.header.type == PERF_RECORD_THROTTLE ? "" : "un",
 320                                    te->time, te->id, te->stream_id);
 321 }
 322
 323 static PyTypeObject pyrf_throttle_event__type = {
 324         PyVarObject_HEAD_INIT(NULL, 0)
 325         .tp_name        = "perf.throttle_event",
 326         .tp_basicsize   = sizeof(struct pyrf_event),
 327         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 328         .tp_doc         = pyrf_throttle_event__doc,
 329         .tp_members     = pyrf_throttle_event__members,
 330         .tp_repr        = (reprfunc)pyrf_throttle_event__repr,
 331 };
 332
 333 static char pyrf_lost_event__doc[] = PyDoc_STR("perf lost event object.");
 334
 335 static PyMemberDef pyrf_lost_event__members[] = {
 336         sample_members
 337         member_def(perf_record_lost, id, T_ULONGLONG, "event id"),
 338         member_def(perf_record_lost, lost, T_ULONGLONG, "number of lost events"),
 339         { .name = NULL, },
 340 };
 341
 342 static PyObject *pyrf_lost_event__repr(struct pyrf_event *pevent)
 343 {
 344         PyObject *ret;
 345         char *s;
 346
 347         if (asprintf(&s, "{ type: lost, id: %#" PRI_lx64 ", "
 348                          "lost: %#" PRI_lx64 " }",
 349                      pevent->event.lost.id, pevent->event.lost.lost) < 0) {
 350                 ret = PyErr_NoMemory();
 351         } else {
 352                 ret = _PyUnicode_FromString(s);
 353                 free(s);
 354         }
 355         return ret;
 356 }
 357
 358 static PyTypeObject pyrf_lost_event__type = {
 359         PyVarObject_HEAD_INIT(NULL, 0)
 360         .tp_name        = "perf.lost_event",
 361         .tp_basicsize   = sizeof(struct pyrf_event),
 362         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 363         .tp_doc         = pyrf_lost_event__doc,
 364         .tp_members     = pyrf_lost_event__members,
 365         .tp_repr        = (reprfunc)pyrf_lost_event__repr,
 366 };
 367
 368 static char pyrf_read_event__doc[] = PyDoc_STR("perf read event object.");
 369
 370 static PyMemberDef pyrf_read_event__members[] = {
 371         sample_members
 372         member_def(perf_record_read, pid, T_UINT, "event pid"),
 373         member_def(perf_record_read, tid, T_UINT, "event tid"),
 374         { .name = NULL, },
 375 };
 376
 377 static PyObject *pyrf_read_event__repr(struct pyrf_event *pevent)
 378 {
 379         return _PyUnicode_FromFormat("{ type: read, pid: %u, tid: %u }",
 380                                    pevent->event.read.pid,
 381                                    pevent->event.read.tid);
 382         /*
 383          * FIXME: return the array of read values,
 384          * making this method useful ;-)
 385          */
 386 }
 387
 388 static PyTypeObject pyrf_read_event__type = {
 389         PyVarObject_HEAD_INIT(NULL, 0)
 390         .tp_name        = "perf.read_event",
 391         .tp_basicsize   = sizeof(struct pyrf_event),
 392         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 393         .tp_doc         = pyrf_read_event__doc,
 394         .tp_members     = pyrf_read_event__members,
 395         .tp_repr        = (reprfunc)pyrf_read_event__repr,
 396 };
 397
 398 static char pyrf_sample_event__doc[] = PyDoc_STR("perf sample event object.");
 399
 400 static PyMemberDef pyrf_sample_event__members[] = {
 401         sample_members
 402         member_def(perf_event_header, type, T_UINT, "event type"),
 403         { .name = NULL, },
 404 };
 405
 406 static PyObject *pyrf_sample_event__repr(struct pyrf_event *pevent)
 407 {
 408         PyObject *ret;
 409         char *s;
 410
 411         if (asprintf(&s, "{ type: sample }") < 0) {
 412                 ret = PyErr_NoMemory();
 413         } else {
 414                 ret = _PyUnicode_FromString(s);
 415                 free(s);
 416         }
 417         return ret;
 418 }
 419
 420 static bool is_tracepoint(struct pyrf_event *pevent)
 421 {
 422         return pevent->evsel->core.attr.type == PERF_TYPE_TRACEPOINT;
 423 }
 424
 425 static PyObject*
 426 tracepoint_field(struct pyrf_event *pe, struct tep_format_field *field)
 427 {
 428         struct tep_handle *pevent = field->event->tep;
 429         void *data = pe->sample.raw_data;
 430         PyObject *ret = NULL;
 431         unsigned long long val;
 432         unsigned int offset, len;
 433
 434         if (field->flags & TEP_FIELD_IS_ARRAY) {
 435                 offset = field->offset;
 436                 len    = field->size;
 437                 if (field->flags & TEP_FIELD_IS_DYNAMIC) {
 438                         val     = tep_read_number(pevent, data + offset, len);
 439                         offset  = val;
 440                         len     = offset >> 16;
 441                         offset &= 0xffff;
 442                         if (field->flags & TEP_FIELD_IS_RELATIVE)
 443                                 offset += field->offset + field->size;
 444                 }
 445                 if (field->flags & TEP_FIELD_IS_STRING &&
 446                     is_printable_array(data + offset, len)) {
 447                         ret = _PyUnicode_FromString((char *)data + offset);
 448                 } else {
 449                         ret = PyByteArray_FromStringAndSize((const char *) data + offset, len);
 450                         field->flags &= ~TEP_FIELD_IS_STRING;
 451                 }
 452         } else {
 453                 val = tep_read_number(pevent, data + field->offset,
 454                                       field->size);
 455                 if (field->flags & TEP_FIELD_IS_POINTER)
 456                         ret = PyLong_FromUnsignedLong((unsigned long) val);
 457                 else if (field->flags & TEP_FIELD_IS_SIGNED)
 458                         ret = PyLong_FromLong((long) val);
 459                 else
 460                         ret = PyLong_FromUnsignedLong((unsigned long) val);
 461         }
 462
 463         return ret;
 464 }
 465
 466 static PyObject*
 467 get_tracepoint_field(struct pyrf_event *pevent, PyObject *attr_name)
 468 {
 469         const char *str = _PyUnicode_AsString(PyObject_Str(attr_name));
 470         struct evsel *evsel = pevent->evsel;
 471         struct tep_format_field *field;
 472
 473         if (!evsel->tp_format) {
 474                 struct tep_event *tp_format;
 475
 476                 tp_format = trace_event__tp_format_id(evsel->core.attr.config);
 477                 if (IS_ERR_OR_NULL(tp_format))
 478                         return NULL;
 479
 480                 evsel->tp_format = tp_format;
 481         }
 482
 483         field = tep_find_any_field(evsel->tp_format, str);
 484         if (!field)
 485                 return NULL;
 486
 487         return tracepoint_field(pevent, field);
 488 }
 489
 490 static PyObject*
 491 pyrf_sample_event__getattro(struct pyrf_event *pevent, PyObject *attr_name)
 492 {
 493         PyObject *obj = NULL;
 494
 495         if (is_tracepoint(pevent))
 496                 obj = get_tracepoint_field(pevent, attr_name);
 497
 498         return obj ?: PyObject_GenericGetAttr((PyObject *) pevent, attr_name);
 499 }
 500
 501 static PyTypeObject pyrf_sample_event__type = {
 502         PyVarObject_HEAD_INIT(NULL, 0)
 503         .tp_name        = "perf.sample_event",
 504         .tp_basicsize   = sizeof(struct pyrf_event),
 505         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 506         .tp_doc         = pyrf_sample_event__doc,
 507         .tp_members     = pyrf_sample_event__members,
 508         .tp_repr        = (reprfunc)pyrf_sample_event__repr,
 509         .tp_getattro    = (getattrofunc) pyrf_sample_event__getattro,
 510 };
 511
 512 static char pyrf_context_switch_event__doc[] = PyDoc_STR("perf context_switch event object.");
 513
 514 static PyMemberDef pyrf_context_switch_event__members[] = {
 515         sample_members
 516         member_def(perf_event_header, type, T_UINT, "event type"),
 517         member_def(perf_record_switch, next_prev_pid, T_UINT, "next/prev pid"),
 518         member_def(perf_record_switch, next_prev_tid, T_UINT, "next/prev tid"),
 519         { .name = NULL, },
 520 };
 521
 522 static PyObject *pyrf_context_switch_event__repr(struct pyrf_event *pevent)
 523 {
 524         PyObject *ret;
 525         char *s;
 526
 527         if (asprintf(&s, "{ type: context_switch, next_prev_pid: %u, next_prev_tid: %u, switch_out: %u }",
 528                      pevent->event.context_switch.next_prev_pid,
 529                      pevent->event.context_switch.next_prev_tid,
 530                      !!(pevent->event.header.misc & PERF_RECORD_MISC_SWITCH_OUT)) < 0) {
 531                 ret = PyErr_NoMemory();
 532         } else {
 533                 ret = _PyUnicode_FromString(s);
 534                 free(s);
 535         }
 536         return ret;
 537 }
 538
 539 static PyTypeObject pyrf_context_switch_event__type = {
 540         PyVarObject_HEAD_INIT(NULL, 0)
 541         .tp_name        = "perf.context_switch_event",
 542         .tp_basicsize   = sizeof(struct pyrf_event),
 543         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 544         .tp_doc         = pyrf_context_switch_event__doc,
 545         .tp_members     = pyrf_context_switch_event__members,
 546         .tp_repr        = (reprfunc)pyrf_context_switch_event__repr,
 547 };
 548
 549 static int pyrf_event__setup_types(void)
 550 {
 551         int err;
 552         pyrf_mmap_event__type.tp_new =
 553         pyrf_task_event__type.tp_new =
 554         pyrf_comm_event__type.tp_new =
 555         pyrf_lost_event__type.tp_new =
 556         pyrf_read_event__type.tp_new =
 557         pyrf_sample_event__type.tp_new =
 558         pyrf_context_switch_event__type.tp_new =
 559         pyrf_throttle_event__type.tp_new = PyType_GenericNew;
 560         err = PyType_Ready(&pyrf_mmap_event__type);
 561         if (err < 0)
 562                 goto out;
 563         err = PyType_Ready(&pyrf_lost_event__type);
 564         if (err < 0)
 565                 goto out;
 566         err = PyType_Ready(&pyrf_task_event__type);
 567         if (err < 0)
 568                 goto out;
 569         err = PyType_Ready(&pyrf_comm_event__type);
 570         if (err < 0)
 571                 goto out;
 572         err = PyType_Ready(&pyrf_throttle_event__type);
 573         if (err < 0)
 574                 goto out;
 575         err = PyType_Ready(&pyrf_read_event__type);
 576         if (err < 0)
 577                 goto out;
 578         err = PyType_Ready(&pyrf_sample_event__type);
 579         if (err < 0)
 580                 goto out;
 581         err = PyType_Ready(&pyrf_context_switch_event__type);
 582         if (err < 0)
 583                 goto out;
 584 out:
 585         return err;
 586 }
 587
 588 static PyTypeObject *pyrf_event__type[] = {
 589         [PERF_RECORD_MMAP]       = &pyrf_mmap_event__type,
 590         [PERF_RECORD_LOST]       = &pyrf_lost_event__type,
 591         [PERF_RECORD_COMM]       = &pyrf_comm_event__type,
 592         [PERF_RECORD_EXIT]       = &pyrf_task_event__type,
 593         [PERF_RECORD_THROTTLE]   = &pyrf_throttle_event__type,
 594         [PERF_RECORD_UNTHROTTLE] = &pyrf_throttle_event__type,
 595         [PERF_RECORD_FORK]       = &pyrf_task_event__type,
 596         [PERF_RECORD_READ]       = &pyrf_read_event__type,
 597         [PERF_RECORD_SAMPLE]     = &pyrf_sample_event__type,
 598         [PERF_RECORD_SWITCH]     = &pyrf_context_switch_event__type,
 599         [PERF_RECORD_SWITCH_CPU_WIDE]  = &pyrf_context_switch_event__type,
 600 };
 601
 602 static PyObject *pyrf_event__new(union perf_event *event)
 603 {
 604         struct pyrf_event *pevent;
 605         PyTypeObject *ptype;
 606
 607         if ((event->header.type < PERF_RECORD_MMAP ||
 608              event->header.type > PERF_RECORD_SAMPLE) &&
 609             !(event->header.type == PERF_RECORD_SWITCH ||
 610               event->header.type == PERF_RECORD_SWITCH_CPU_WIDE))
 611                 return NULL;
 612
 613         ptype = pyrf_event__type[event->header.type];
 614         pevent = PyObject_New(struct pyrf_event, ptype);
 615         if (pevent != NULL)
 616                 memcpy(&pevent->event, event, event->header.size);
 617         return (PyObject *)pevent;
 618 }
 619
 620 struct pyrf_cpu_map {
 621         PyObject_HEAD
 622
 623         struct perf_cpu_map *cpus;
 624 };
 625
 626 static int pyrf_cpu_map__init(struct pyrf_cpu_map *pcpus,
 627                               PyObject *args, PyObject *kwargs)
 628 {
 629         static char *kwlist[] = { "cpustr", NULL };
 630         char *cpustr = NULL;
 631
 632         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|s",
 633                                          kwlist, &cpustr))
 634                 return -1;
 635
 636         pcpus->cpus = perf_cpu_map__new(cpustr);
 637         if (pcpus->cpus == NULL)
 638                 return -1;
 639         return 0;
 640 }
 641
 642 static void pyrf_cpu_map__delete(struct pyrf_cpu_map *pcpus)
 643 {
 644         perf_cpu_map__put(pcpus->cpus);
 645         Py_TYPE(pcpus)->tp_free((PyObject*)pcpus);
 646 }
 647
 648 static Py_ssize_t pyrf_cpu_map__length(PyObject *obj)
 649 {
 650         struct pyrf_cpu_map *pcpus = (void *)obj;
 651
 652         return perf_cpu_map__nr(pcpus->cpus);
 653 }
 654
 655 static PyObject *pyrf_cpu_map__item(PyObject *obj, Py_ssize_t i)
 656 {
 657         struct pyrf_cpu_map *pcpus = (void *)obj;
 658
 659         if (i >= perf_cpu_map__nr(pcpus->cpus))
 660                 return NULL;
 661
 662         return Py_BuildValue("i", perf_cpu_map__cpu(pcpus->cpus, i).cpu);
 663 }
 664
 665 static PySequenceMethods pyrf_cpu_map__sequence_methods = {
 666         .sq_length = pyrf_cpu_map__length,
 667         .sq_item   = pyrf_cpu_map__item,
 668 };
 669
 670 static char pyrf_cpu_map__doc[] = PyDoc_STR("cpu map object.");
 671
 672 static PyTypeObject pyrf_cpu_map__type = {
 673         PyVarObject_HEAD_INIT(NULL, 0)
 674         .tp_name        = "perf.cpu_map",
 675         .tp_basicsize   = sizeof(struct pyrf_cpu_map),
 676         .tp_dealloc     = (destructor)pyrf_cpu_map__delete,
 677         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 678         .tp_doc         = pyrf_cpu_map__doc,
 679         .tp_as_sequence = &pyrf_cpu_map__sequence_methods,
 680         .tp_init        = (initproc)pyrf_cpu_map__init,
 681 };
 682
 683 static int pyrf_cpu_map__setup_types(void)
 684 {
 685         pyrf_cpu_map__type.tp_new = PyType_GenericNew;
 686         return PyType_Ready(&pyrf_cpu_map__type);
 687 }
 688
 689 struct pyrf_thread_map {
 690         PyObject_HEAD
 691
 692         struct perf_thread_map *threads;
 693 };
 694
 695 static int pyrf_thread_map__init(struct pyrf_thread_map *pthreads,
 696                                  PyObject *args, PyObject *kwargs)
 697 {
 698         static char *kwlist[] = { "pid", "tid", "uid", NULL };
 699         int pid = -1, tid = -1, uid = UINT_MAX;
 700
 701         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|iii",
 702                                          kwlist, &pid, &tid, &uid))
 703                 return -1;
 704
 705         pthreads->threads = thread_map__new(pid, tid, uid);
 706         if (pthreads->threads == NULL)
 707                 return -1;
 708         return 0;
 709 }
 710
 711 static void pyrf_thread_map__delete(struct pyrf_thread_map *pthreads)
 712 {
 713         perf_thread_map__put(pthreads->threads);
 714         Py_TYPE(pthreads)->tp_free((PyObject*)pthreads);
 715 }
 716
 717 static Py_ssize_t pyrf_thread_map__length(PyObject *obj)
 718 {
 719         struct pyrf_thread_map *pthreads = (void *)obj;
 720
 721         return pthreads->threads->nr;
 722 }
 723
 724 static PyObject *pyrf_thread_map__item(PyObject *obj, Py_ssize_t i)
 725 {
 726         struct pyrf_thread_map *pthreads = (void *)obj;
 727
 728         if (i >= pthreads->threads->nr)
 729                 return NULL;
 730
 731         return Py_BuildValue("i", pthreads->threads->map[i]);
 732 }
 733
 734 static PySequenceMethods pyrf_thread_map__sequence_methods = {
 735         .sq_length = pyrf_thread_map__length,
 736         .sq_item   = pyrf_thread_map__item,
 737 };
 738
 739 static char pyrf_thread_map__doc[] = PyDoc_STR("thread map object.");
 740
 741 static PyTypeObject pyrf_thread_map__type = {
 742         PyVarObject_HEAD_INIT(NULL, 0)
 743         .tp_name        = "perf.thread_map",
 744         .tp_basicsize   = sizeof(struct pyrf_thread_map),
 745         .tp_dealloc     = (destructor)pyrf_thread_map__delete,
 746         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 747         .tp_doc         = pyrf_thread_map__doc,
 748         .tp_as_sequence = &pyrf_thread_map__sequence_methods,
 749         .tp_init        = (initproc)pyrf_thread_map__init,
 750 };
 751
 752 static int pyrf_thread_map__setup_types(void)
 753 {
 754         pyrf_thread_map__type.tp_new = PyType_GenericNew;
 755         return PyType_Ready(&pyrf_thread_map__type);
 756 }
 757
 758 struct pyrf_evsel {
 759         PyObject_HEAD
 760
 761         struct evsel evsel;
 762 };
 763
 764 static int pyrf_evsel__init(struct pyrf_evsel *pevsel,
 765                             PyObject *args, PyObject *kwargs)
 766 {
 767         struct perf_event_attr attr = {
 768                 .type = PERF_TYPE_HARDWARE,
 769                 .config = PERF_COUNT_HW_CPU_CYCLES,
 770                 .sample_type = PERF_SAMPLE_PERIOD | PERF_SAMPLE_TID,
 771         };
 772         static char *kwlist[] = {
 773                 "type",
 774                 "config",
 775                 "sample_freq",
 776                 "sample_period",
 777                 "sample_type",
 778                 "read_format",
 779                 "disabled",
 780                 "inherit",
 781                 "pinned",
 782                 "exclusive",
 783                 "exclude_user",
 784                 "exclude_kernel",
 785                 "exclude_hv",
 786                 "exclude_idle",
 787                 "mmap",
 788                 "context_switch",
 789                 "comm",
 790                 "freq",
 791                 "inherit_stat",
 792                 "enable_on_exec",
 793                 "task",
 794                 "watermark",
 795                 "precise_ip",
 796                 "mmap_data",
 797                 "sample_id_all",
 798                 "wakeup_events",
 799                 "bp_type",
 800                 "bp_addr",
 801                 "bp_len",
 802                  NULL
 803         };
 804         u64 sample_period = 0;
 805         u32 disabled = 0,
 806             inherit = 0,
 807             pinned = 0,
 808             exclusive = 0,
 809             exclude_user = 0,
 810             exclude_kernel = 0,
 811             exclude_hv = 0,
 812             exclude_idle = 0,
 813             mmap = 0,
 814             context_switch = 0,
 815             comm = 0,
 816             freq = 1,
 817             inherit_stat = 0,
 818             enable_on_exec = 0,
 819             task = 0,
 820             watermark = 0,
 821             precise_ip = 0,
 822             mmap_data = 0,
 823             sample_id_all = 1;
 824         int idx = 0;
 825
 826         if (!PyArg_ParseTupleAndKeywords(args, kwargs,
 827                                          "|iKiKKiiiiiiiiiiiiiiiiiiiiiiKK", kwlist,
 828                                          &attr.type, &attr.config, &attr.sample_freq,
 829                                          &sample_period, &attr.sample_type,
 830                                          &attr.read_format, &disabled, &inherit,
 831                                          &pinned, &exclusive, &exclude_user,
 832                                          &exclude_kernel, &exclude_hv, &exclude_idle,
 833                                          &mmap, &context_switch, &comm, &freq, &inherit_stat,
 834                                          &enable_on_exec, &task, &watermark,
 835                                          &precise_ip, &mmap_data, &sample_id_all,
 836                                          &attr.wakeup_events, &attr.bp_type,
 837                                          &attr.bp_addr, &attr.bp_len, &idx))
 838                 return -1;
 839
 840         /* union... */
 841         if (sample_period != 0) {
 842                 if (attr.sample_freq != 0)
 843                         return -1; /* FIXME: throw right exception */
 844                 attr.sample_period = sample_period;
 845         }
 846
 847         /* Bitfields */
 848         attr.disabled       = disabled;
 849         attr.inherit        = inherit;
 850         attr.pinned         = pinned;
 851         attr.exclusive      = exclusive;
 852         attr.exclude_user   = exclude_user;
 853         attr.exclude_kernel = exclude_kernel;
 854         attr.exclude_hv     = exclude_hv;
 855         attr.exclude_idle   = exclude_idle;
 856         attr.mmap           = mmap;
 857         attr.context_switch = context_switch;
 858         attr.comm           = comm;
 859         attr.freq           = freq;
 860         attr.inherit_stat   = inherit_stat;
 861         attr.enable_on_exec = enable_on_exec;
 862         attr.task           = task;
 863         attr.watermark      = watermark;
 864         attr.precise_ip     = precise_ip;
 865         attr.mmap_data      = mmap_data;
 866         attr.sample_id_all  = sample_id_all;
 867         attr.size           = sizeof(attr);
 868
 869         evsel__init(&pevsel->evsel, &attr, idx);
 870         return 0;
 871 }
 872
 873 static void pyrf_evsel__delete(struct pyrf_evsel *pevsel)
 874 {
 875         evsel__exit(&pevsel->evsel);
 876         Py_TYPE(pevsel)->tp_free((PyObject*)pevsel);
 877 }
 878
 879 static PyObject *pyrf_evsel__open(struct pyrf_evsel *pevsel,
 880                                   PyObject *args, PyObject *kwargs)
 881 {
 882         struct evsel *evsel = &pevsel->evsel;
 883         struct perf_cpu_map *cpus = NULL;
 884         struct perf_thread_map *threads = NULL;
 885         PyObject *pcpus = NULL, *pthreads = NULL;
 886         int group = 0, inherit = 0;
 887         static char *kwlist[] = { "cpus", "threads", "group", "inherit", NULL };
 888
 889         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|OOii", kwlist,
 890                                          &pcpus, &pthreads, &group, &inherit))
 891                 return NULL;
 892
 893         if (pthreads != NULL)
 894                 threads = ((struct pyrf_thread_map *)pthreads)->threads;
 895
 896         if (pcpus != NULL)
 897                 cpus = ((struct pyrf_cpu_map *)pcpus)->cpus;
 898
 899         evsel->core.attr.inherit = inherit;
 900         /*
 901          * This will group just the fds for this single evsel, to group
 902          * multiple events, use evlist.open().
 903          */
 904         if (evsel__open(evsel, cpus, threads) < 0) {
 905                 PyErr_SetFromErrno(PyExc_OSError);
 906                 return NULL;
 907         }
 908
 909         Py_INCREF(Py_None);
 910         return Py_None;
 911 }
 912
 913 static PyMethodDef pyrf_evsel__methods[] = {
 914         {
 915                 .ml_name  = "open",
 916                 .ml_meth  = (PyCFunction)pyrf_evsel__open,
 917                 .ml_flags = METH_VARARGS | METH_KEYWORDS,
 918                 .ml_doc   = PyDoc_STR("open the event selector file descriptor table.")
 919         },
 920         { .ml_name = NULL, }
 921 };
 922
 923 static char pyrf_evsel__doc[] = PyDoc_STR("perf event selector list object.");
 924
 925 static PyTypeObject pyrf_evsel__type = {
 926         PyVarObject_HEAD_INIT(NULL, 0)
 927         .tp_name        = "perf.evsel",
 928         .tp_basicsize   = sizeof(struct pyrf_evsel),
 929         .tp_dealloc     = (destructor)pyrf_evsel__delete,
 930         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 931         .tp_doc         = pyrf_evsel__doc,
 932         .tp_methods     = pyrf_evsel__methods,
 933         .tp_init        = (initproc)pyrf_evsel__init,
 934 };
 935
 936 static int pyrf_evsel__setup_types(void)
 937 {
 938         pyrf_evsel__type.tp_new = PyType_GenericNew;
 939         return PyType_Ready(&pyrf_evsel__type);
 940 }
 941
 942 struct pyrf_evlist {
 943         PyObject_HEAD
 944
 945         struct evlist evlist;
 946 };
 947
 948 static int pyrf_evlist__init(struct pyrf_evlist *pevlist,
 949                              PyObject *args, PyObject *kwargs __maybe_unused)
 950 {
 951         PyObject *pcpus = NULL, *pthreads = NULL;
 952         struct perf_cpu_map *cpus;
 953         struct perf_thread_map *threads;
 954
 955         if (!PyArg_ParseTuple(args, "OO", &pcpus, &pthreads))
 956                 return -1;
 957
 958         threads = ((struct pyrf_thread_map *)pthreads)->threads;
 959         cpus = ((struct pyrf_cpu_map *)pcpus)->cpus;
 960         evlist__init(&pevlist->evlist, cpus, threads);
 961         return 0;
 962 }
 963
 964 static void pyrf_evlist__delete(struct pyrf_evlist *pevlist)
 965 {
 966         evlist__exit(&pevlist->evlist);
 967         Py_TYPE(pevlist)->tp_free((PyObject*)pevlist);
 968 }
 969
 970 static PyObject *pyrf_evlist__mmap(struct pyrf_evlist *pevlist,
 971                                    PyObject *args, PyObject *kwargs)
 972 {
 973         struct evlist *evlist = &pevlist->evlist;
 974         static char *kwlist[] = { "pages", "overwrite", NULL };
 975         int pages = 128, overwrite = false;
 976
 977         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|ii", kwlist,
 978                                          &pages, &overwrite))
 979                 return NULL;
 980
 981         if (evlist__mmap(evlist, pages) < 0) {
 982                 PyErr_SetFromErrno(PyExc_OSError);
 983                 return NULL;
 984         }
 985
 986         Py_INCREF(Py_None);
 987         return Py_None;
 988 }
 989
 990 static PyObject *pyrf_evlist__poll(struct pyrf_evlist *pevlist,
 991                                    PyObject *args, PyObject *kwargs)
 992 {
 993         struct evlist *evlist = &pevlist->evlist;
 994         static char *kwlist[] = { "timeout", NULL };
 995         int timeout = -1, n;
 996
 997         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|i", kwlist, &timeout))
 998                 return NULL;
 999
1000         n = evlist__poll(evlist, timeout);
1001         if (n < 0) {
1002                 PyErr_SetFromErrno(PyExc_OSError);
1003                 return NULL;
1004         }
1005
1006         return Py_BuildValue("i", n);
1007 }
1008
1009 static PyObject *pyrf_evlist__get_pollfd(struct pyrf_evlist *pevlist,
1010                                          PyObject *args __maybe_unused,
1011                                          PyObject *kwargs __maybe_unused)
1012 {
1013         struct evlist *evlist = &pevlist->evlist;
1014         PyObject *list = PyList_New(0);
1015         int i;
1016
1017         for (i = 0; i < evlist->core.pollfd.nr; ++i) {
1018                 PyObject *file;
1019 #if PY_MAJOR_VERSION < 3
1020                 FILE *fp = fdopen(evlist->core.pollfd.entries[i].fd, "r");
1021
1022                 if (fp == NULL)
1023                         goto free_list;
1024
1025                 file = PyFile_FromFile(fp, "perf", "r", NULL);
1026 #else
1027                 file = PyFile_FromFd(evlist->core.pollfd.entries[i].fd, "perf", "r", -1,
1028                                      NULL, NULL, NULL, 0);
1029 #endif
1030                 if (file == NULL)
1031                         goto free_list;
1032
1033                 if (PyList_Append(list, file) != 0) {
1034                         Py_DECREF(file);
1035                         goto free_list;
1036                 }
1037
1038                 Py_DECREF(file);
1039         }
1040
1041         return list;
1042 free_list:
1043         return PyErr_NoMemory();
1044 }
1045
1046
1047 static PyObject *pyrf_evlist__add(struct pyrf_evlist *pevlist,
1048                                   PyObject *args,
1049                                   PyObject *kwargs __maybe_unused)
1050 {
1051         struct evlist *evlist = &pevlist->evlist;
1052         PyObject *pevsel;
1053         struct evsel *evsel;
1054
1055         if (!PyArg_ParseTuple(args, "O", &pevsel))
1056                 return NULL;
1057
1058         Py_INCREF(pevsel);
1059         evsel = &((struct pyrf_evsel *)pevsel)->evsel;
1060         evsel->core.idx = evlist->core.nr_entries;
1061         evlist__add(evlist, evsel);
1062
1063         return Py_BuildValue("i", evlist->core.nr_entries);
1064 }
1065
1066 static struct mmap *get_md(struct evlist *evlist, int cpu)
1067 {
1068         int i;
1069
1070         for (i = 0; i < evlist->core.nr_mmaps; i++) {
1071                 struct mmap *md = &evlist->mmap[i];
1072
1073                 if (md->core.cpu.cpu == cpu)
1074                         return md;
1075         }
1076
1077         return NULL;
1078 }
1079
1080 static PyObject *pyrf_evlist__read_on_cpu(struct pyrf_evlist *pevlist,
1081                                           PyObject *args, PyObject *kwargs)
1082 {
1083         struct evlist *evlist = &pevlist->evlist;
1084         union perf_event *event;
1085         int sample_id_all = 1, cpu;
1086         static char *kwlist[] = { "cpu", "sample_id_all", NULL };
1087         struct mmap *md;
1088         int err;
1089
1090         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "i|i", kwlist,
1091                                          &cpu, &sample_id_all))
1092                 return NULL;
1093
1094         md = get_md(evlist, cpu);
1095         if (!md)
1096                 return NULL;
1097
1098         if (perf_mmap__read_init(&md->core) < 0)
1099                 goto end;
1100
1101         event = perf_mmap__read_event(&md->core);
1102         if (event != NULL) {
1103                 PyObject *pyevent = pyrf_event__new(event);
1104                 struct pyrf_event *pevent = (struct pyrf_event *)pyevent;
1105                 struct evsel *evsel;
1106
1107                 if (pyevent == NULL)
1108                         return PyErr_NoMemory();
1109
1110                 evsel = evlist__event2evsel(evlist, event);
1111                 if (!evsel) {
1112                         Py_INCREF(Py_None);
1113                         return Py_None;
1114                 }
1115
1116                 pevent->evsel = evsel;
1117
1118                 err = evsel__parse_sample(evsel, event, &pevent->sample);
1119
1120                 /* Consume the even only after we parsed it out. */
1121                 perf_mmap__consume(&md->core);
1122
1123                 if (err)
1124                         return PyErr_Format(PyExc_OSError,
1125                                             "perf: can't parse sample, err=%d", err);
1126                 return pyevent;
1127         }
1128 end:
1129         Py_INCREF(Py_None);
1130         return Py_None;
1131 }
1132
1133 static PyObject *pyrf_evlist__open(struct pyrf_evlist *pevlist,
1134                                    PyObject *args, PyObject *kwargs)
1135 {
1136         struct evlist *evlist = &pevlist->evlist;
1137         int group = 0;
1138         static char *kwlist[] = { "group", NULL };
1139
1140         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|OOii", kwlist, &group))
1141                 return NULL;
1142
1143         if (group)
1144                 evlist__set_leader(evlist);
1145
1146         if (evlist__open(evlist) < 0) {
1147                 PyErr_SetFromErrno(PyExc_OSError);
1148                 return NULL;
1149         }
1150
1151         Py_INCREF(Py_None);
1152         return Py_None;
1153 }
1154
1155 static PyMethodDef pyrf_evlist__methods[] = {
1156         {
1157                 .ml_name  = "mmap",
1158                 .ml_meth  = (PyCFunction)pyrf_evlist__mmap,
1159                 .ml_flags = METH_VARARGS | METH_KEYWORDS,
1160                 .ml_doc   = PyDoc_STR("mmap the file descriptor table.")
1161         },
1162         {
1163                 .ml_name  = "open",
1164                 .ml_meth  = (PyCFunction)pyrf_evlist__open,
1165                 .ml_flags = METH_VARARGS | METH_KEYWORDS,
1166                 .ml_doc   = PyDoc_STR("open the file descriptors.")
1167         },
1168         {
1169                 .ml_name  = "poll",
1170                 .ml_meth  = (PyCFunction)pyrf_evlist__poll,
1171                 .ml_flags = METH_VARARGS | METH_KEYWORDS,
1172                 .ml_doc   = PyDoc_STR("poll the file descriptor table.")
1173         },
1174         {
1175                 .ml_name  = "get_pollfd",
1176                 .ml_meth  = (PyCFunction)pyrf_evlist__get_pollfd,
1177                 .ml_flags = METH_VARARGS | METH_KEYWORDS,
1178                 .ml_doc   = PyDoc_STR("get the poll file descriptor table.")
1179         },
1180         {
1181                 .ml_name  = "add",
1182                 .ml_meth  = (PyCFunction)pyrf_evlist__add,
1183                 .ml_flags = METH_VARARGS | METH_KEYWORDS,
1184                 .ml_doc   = PyDoc_STR("adds an event selector to the list.")
1185         },
1186         {
1187                 .ml_name  = "read_on_cpu",
1188                 .ml_meth  = (PyCFunction)pyrf_evlist__read_on_cpu,
1189                 .ml_flags = METH_VARARGS | METH_KEYWORDS,
1190                 .ml_doc   = PyDoc_STR("reads an event.")
1191         },
1192         { .ml_name = NULL, }
1193 };
1194
1195 static Py_ssize_t pyrf_evlist__length(PyObject *obj)
1196 {
1197         struct pyrf_evlist *pevlist = (void *)obj;
1198
1199         return pevlist->evlist.core.nr_entries;
1200 }
1201
1202 static PyObject *pyrf_evlist__item(PyObject *obj, Py_ssize_t i)
1203 {
1204         struct pyrf_evlist *pevlist = (void *)obj;
1205         struct evsel *pos;
1206
1207         if (i >= pevlist->evlist.core.nr_entries)
1208                 return NULL;
1209
1210         evlist__for_each_entry(&pevlist->evlist, pos) {
1211                 if (i-- == 0)
1212                         break;
1213         }
1214
1215         return Py_BuildValue("O", container_of(pos, struct pyrf_evsel, evsel));
1216 }
1217
1218 static PySequenceMethods pyrf_evlist__sequence_methods = {
1219         .sq_length = pyrf_evlist__length,
1220         .sq_item   = pyrf_evlist__item,
1221 };
1222
1223 static char pyrf_evlist__doc[] = PyDoc_STR("perf event selector list object.");
1224
1225 static PyTypeObject pyrf_evlist__type = {
1226         PyVarObject_HEAD_INIT(NULL, 0)
1227         .tp_name        = "perf.evlist",
1228         .tp_basicsize   = sizeof(struct pyrf_evlist),
1229         .tp_dealloc     = (destructor)pyrf_evlist__delete,
1230         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
1231         .tp_as_sequence = &pyrf_evlist__sequence_methods,
1232         .tp_doc         = pyrf_evlist__doc,
1233         .tp_methods     = pyrf_evlist__methods,
1234         .tp_init        = (initproc)pyrf_evlist__init,
1235 };
1236
1237 static int pyrf_evlist__setup_types(void)
1238 {
1239         pyrf_evlist__type.tp_new = PyType_GenericNew;
1240         return PyType_Ready(&pyrf_evlist__type);
1241 }
1242
1243 #define PERF_CONST(name) { #name, PERF_##name }
1244
1245 static struct {
1246         const char *name;
1247         int         value;
1248 } perf__constants[] = {
1249         PERF_CONST(TYPE_HARDWARE),
1250         PERF_CONST(TYPE_SOFTWARE),
1251         PERF_CONST(TYPE_TRACEPOINT),
1252         PERF_CONST(TYPE_HW_CACHE),
1253         PERF_CONST(TYPE_RAW),
1254         PERF_CONST(TYPE_BREAKPOINT),
1255
1256         PERF_CONST(COUNT_HW_CPU_CYCLES),
1257         PERF_CONST(COUNT_HW_INSTRUCTIONS),
1258         PERF_CONST(COUNT_HW_CACHE_REFERENCES),
1259         PERF_CONST(COUNT_HW_CACHE_MISSES),
1260         PERF_CONST(COUNT_HW_BRANCH_INSTRUCTIONS),
1261         PERF_CONST(COUNT_HW_BRANCH_MISSES),
1262         PERF_CONST(COUNT_HW_BUS_CYCLES),
1263         PERF_CONST(COUNT_HW_CACHE_L1D),
1264         PERF_CONST(COUNT_HW_CACHE_L1I),
1265         PERF_CONST(COUNT_HW_CACHE_LL),
1266         PERF_CONST(COUNT_HW_CACHE_DTLB),
1267         PERF_CONST(COUNT_HW_CACHE_ITLB),
1268         PERF_CONST(COUNT_HW_CACHE_BPU),
1269         PERF_CONST(COUNT_HW_CACHE_OP_READ),
1270         PERF_CONST(COUNT_HW_CACHE_OP_WRITE),
1271         PERF_CONST(COUNT_HW_CACHE_OP_PREFETCH),
1272         PERF_CONST(COUNT_HW_CACHE_RESULT_ACCESS),
1273         PERF_CONST(COUNT_HW_CACHE_RESULT_MISS),
1274
1275         PERF_CONST(COUNT_HW_STALLED_CYCLES_FRONTEND),
1276         PERF_CONST(COUNT_HW_STALLED_CYCLES_BACKEND),
1277
1278         PERF_CONST(COUNT_SW_CPU_CLOCK),
1279         PERF_CONST(COUNT_SW_TASK_CLOCK),
1280         PERF_CONST(COUNT_SW_PAGE_FAULTS),
1281         PERF_CONST(COUNT_SW_CONTEXT_SWITCHES),
1282         PERF_CONST(COUNT_SW_CPU_MIGRATIONS),
1283         PERF_CONST(COUNT_SW_PAGE_FAULTS_MIN),
1284         PERF_CONST(COUNT_SW_PAGE_FAULTS_MAJ),
1285         PERF_CONST(COUNT_SW_ALIGNMENT_FAULTS),
1286         PERF_CONST(COUNT_SW_EMULATION_FAULTS),
1287         PERF_CONST(COUNT_SW_DUMMY),
1288
1289         PERF_CONST(SAMPLE_IP),
1290         PERF_CONST(SAMPLE_TID),
1291         PERF_CONST(SAMPLE_TIME),
1292         PERF_CONST(SAMPLE_ADDR),
1293         PERF_CONST(SAMPLE_READ),
1294         PERF_CONST(SAMPLE_CALLCHAIN),
1295         PERF_CONST(SAMPLE_ID),
1296         PERF_CONST(SAMPLE_CPU),
1297         PERF_CONST(SAMPLE_PERIOD),
1298         PERF_CONST(SAMPLE_STREAM_ID),
1299         PERF_CONST(SAMPLE_RAW),
1300
1301         PERF_CONST(FORMAT_TOTAL_TIME_ENABLED),
1302         PERF_CONST(FORMAT_TOTAL_TIME_RUNNING),
1303         PERF_CONST(FORMAT_ID),
1304         PERF_CONST(FORMAT_GROUP),
1305
1306         PERF_CONST(RECORD_MMAP),
1307         PERF_CONST(RECORD_LOST),
1308         PERF_CONST(RECORD_COMM),
1309         PERF_CONST(RECORD_EXIT),
1310         PERF_CONST(RECORD_THROTTLE),
1311         PERF_CONST(RECORD_UNTHROTTLE),
1312         PERF_CONST(RECORD_FORK),
1313         PERF_CONST(RECORD_READ),
1314         PERF_CONST(RECORD_SAMPLE),
1315         PERF_CONST(RECORD_MMAP2),
1316         PERF_CONST(RECORD_AUX),
1317         PERF_CONST(RECORD_ITRACE_START),
1318         PERF_CONST(RECORD_LOST_SAMPLES),
1319         PERF_CONST(RECORD_SWITCH),
1320         PERF_CONST(RECORD_SWITCH_CPU_WIDE),
1321
1322         PERF_CONST(RECORD_MISC_SWITCH_OUT),
1323         { .name = NULL, },
1324 };
1325
1326 static PyObject *pyrf__tracepoint(struct pyrf_evsel *pevsel,
1327                                   PyObject *args, PyObject *kwargs)
1328 {
1329         struct tep_event *tp_format;
1330         static char *kwlist[] = { "sys", "name", NULL };
1331         char *sys  = NULL;
1332         char *name = NULL;
1333
1334         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|ss", kwlist,
1335                                          &sys, &name))
1336                 return NULL;
1337
1338         tp_format = trace_event__tp_format(sys, name);
1339         if (IS_ERR(tp_format))
1340                 return _PyLong_FromLong(-1);
1341
1342         return _PyLong_FromLong(tp_format->id);
1343 }
1344
1345 static PyMethodDef perf__methods[] = {
1346         {
1347                 .ml_name  = "tracepoint",
1348                 .ml_meth  = (PyCFunction) pyrf__tracepoint,
1349                 .ml_flags = METH_VARARGS | METH_KEYWORDS,
1350                 .ml_doc   = PyDoc_STR("Get tracepoint config.")
1351         },
1352         { .ml_name = NULL, }
1353 };
1354
1355 #if PY_MAJOR_VERSION < 3
1356 PyMODINIT_FUNC initperf(void)
1357 #else
1358 PyMODINIT_FUNC PyInit_perf(void)
1359 #endif
1360 {
1361         PyObject *obj;
1362         int i;
1363         PyObject *dict;
1364 #if PY_MAJOR_VERSION < 3
1365         PyObject *module = Py_InitModule("perf", perf__methods);
1366 #else
1367         static struct PyModuleDef moduledef = {
1368                 PyModuleDef_HEAD_INIT,
1369                 "perf",                 /* m_name */
1370                 "",                     /* m_doc */
1371                 -1,                     /* m_size */
1372                 perf__methods,          /* m_methods */
1373                 NULL,                   /* m_reload */
1374                 NULL,                   /* m_traverse */
1375                 NULL,                   /* m_clear */
1376                 NULL,                   /* m_free */
1377         };
1378         PyObject *module = PyModule_Create(&moduledef);
1379 #endif
1380
1381         if (module == NULL ||
1382             pyrf_event__setup_types() < 0 ||
1383             pyrf_evlist__setup_types() < 0 ||
1384             pyrf_evsel__setup_types() < 0 ||
1385             pyrf_thread_map__setup_types() < 0 ||
1386             pyrf_cpu_map__setup_types() < 0)
1387 #if PY_MAJOR_VERSION < 3
1388                 return;
1389 #else
1390                 return module;
1391 #endif
1392
1393         /* The page_size is placed in util object. */
1394         page_size = sysconf(_SC_PAGE_SIZE);
1395
1396         Py_INCREF(&pyrf_evlist__type);
1397         PyModule_AddObject(module, "evlist", (PyObject*)&pyrf_evlist__type);
1398
1399         Py_INCREF(&pyrf_evsel__type);
1400         PyModule_AddObject(module, "evsel", (PyObject*)&pyrf_evsel__type);
1401
1402         Py_INCREF(&pyrf_mmap_event__type);
1403         PyModule_AddObject(module, "mmap_event", (PyObject *)&pyrf_mmap_event__type);
1404
1405         Py_INCREF(&pyrf_lost_event__type);
1406         PyModule_AddObject(module, "lost_event", (PyObject *)&pyrf_lost_event__type);
1407
1408         Py_INCREF(&pyrf_comm_event__type);
1409         PyModule_AddObject(module, "comm_event", (PyObject *)&pyrf_comm_event__type);
1410
1411         Py_INCREF(&pyrf_task_event__type);
1412         PyModule_AddObject(module, "task_event", (PyObject *)&pyrf_task_event__type);
1413
1414         Py_INCREF(&pyrf_throttle_event__type);
1415         PyModule_AddObject(module, "throttle_event", (PyObject *)&pyrf_throttle_event__type);
1416
1417         Py_INCREF(&pyrf_task_event__type);
1418         PyModule_AddObject(module, "task_event", (PyObject *)&pyrf_task_event__type);
1419
1420         Py_INCREF(&pyrf_read_event__type);
1421         PyModule_AddObject(module, "read_event", (PyObject *)&pyrf_read_event__type);
1422
1423         Py_INCREF(&pyrf_sample_event__type);
1424         PyModule_AddObject(module, "sample_event", (PyObject *)&pyrf_sample_event__type);
1425
1426         Py_INCREF(&pyrf_context_switch_event__type);
1427         PyModule_AddObject(module, "switch_event", (PyObject *)&pyrf_context_switch_event__type);
1428
1429         Py_INCREF(&pyrf_thread_map__type);
1430         PyModule_AddObject(module, "thread_map", (PyObject*)&pyrf_thread_map__type);
1431
1432         Py_INCREF(&pyrf_cpu_map__type);
1433         PyModule_AddObject(module, "cpu_map", (PyObject*)&pyrf_cpu_map__type);
1434
1435         dict = PyModule_GetDict(module);
1436         if (dict == NULL)
1437                 goto error;
1438
1439         for (i = 0; perf__constants[i].name != NULL; i++) {
1440                 obj = _PyLong_FromLong(perf__constants[i].value);
1441                 if (obj == NULL)
1442                         goto error;
1443                 PyDict_SetItemString(dict, perf__constants[i].name, obj);
1444                 Py_DECREF(obj);
1445         }
1446
1447 error:
1448         if (PyErr_Occurred())
1449                 PyErr_SetString(PyExc_ImportError, "perf: Init failed!");
1450 #if PY_MAJOR_VERSION >= 3
1451         return module;
1452 #endif
1453 }
1454
1455 /*
1456  * Dummy, to avoid dragging all the test_attr infrastructure in the python
1457  * binding.
1458  */
1459 void test_attr__open(struct perf_event_attr *attr, pid_t pid, struct perf_cpu cpu,
1460                      int fd, int group_fd, unsigned long flags)
1461 {
1462 }