linux/tools/perf/util/python.c
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   1// SPDX-License-Identifier: GPL-2.0
   2#include <Python.h>
   3#include <structmember.h>
   4#include <inttypes.h>
   5#include <poll.h>
   6#include <linux/err.h>
   7#include "evlist.h"
   8#include "callchain.h"
   9#include "evsel.h"
  10#include "event.h"
  11#include "cpumap.h"
  12#include "print_binary.h"
  13#include "thread_map.h"
  14
  15#if PY_MAJOR_VERSION < 3
  16#define _PyUnicode_FromString(arg) \
  17  PyString_FromString(arg)
  18#define _PyUnicode_AsString(arg) \
  19  PyString_AsString(arg)
  20#define _PyUnicode_FromFormat(...) \
  21  PyString_FromFormat(__VA_ARGS__)
  22#define _PyLong_FromLong(arg) \
  23  PyInt_FromLong(arg)
  24
  25#else
  26
  27#define _PyUnicode_FromString(arg) \
  28  PyUnicode_FromString(arg)
  29#define _PyUnicode_FromFormat(...) \
  30  PyUnicode_FromFormat(__VA_ARGS__)
  31#define _PyLong_FromLong(arg) \
  32  PyLong_FromLong(arg)
  33#endif
  34
  35#ifndef Py_TYPE
  36#define Py_TYPE(ob) (((PyObject*)(ob))->ob_type)
  37#endif
  38
  39/*
  40 * Provide these two so that we don't have to link against callchain.c and
  41 * start dragging hist.c, etc.
  42 */
  43struct callchain_param callchain_param;
  44
  45int parse_callchain_record(const char *arg __maybe_unused,
  46                           struct callchain_param *param __maybe_unused)
  47{
  48        return 0;
  49}
  50
  51/*
  52 * Support debug printing even though util/debug.c is not linked.  That means
  53 * implementing 'verbose' and 'eprintf'.
  54 */
  55int verbose;
  56
  57int eprintf(int level, int var, const char *fmt, ...)
  58{
  59        va_list args;
  60        int ret = 0;
  61
  62        if (var >= level) {
  63                va_start(args, fmt);
  64                ret = vfprintf(stderr, fmt, args);
  65                va_end(args);
  66        }
  67
  68        return ret;
  69}
  70
  71/* Define PyVarObject_HEAD_INIT for python 2.5 */
  72#ifndef PyVarObject_HEAD_INIT
  73# define PyVarObject_HEAD_INIT(type, size) PyObject_HEAD_INIT(type) size,
  74#endif
  75
  76#if PY_MAJOR_VERSION < 3
  77PyMODINIT_FUNC initperf(void);
  78#else
  79PyMODINIT_FUNC PyInit_perf(void);
  80#endif
  81
  82#define member_def(type, member, ptype, help) \
  83        { #member, ptype, \
  84          offsetof(struct pyrf_event, event) + offsetof(struct type, member), \
  85          0, help }
  86
  87#define sample_member_def(name, member, ptype, help) \
  88        { #name, ptype, \
  89          offsetof(struct pyrf_event, sample) + offsetof(struct perf_sample, member), \
  90          0, help }
  91
  92struct pyrf_event {
  93        PyObject_HEAD
  94        struct perf_evsel *evsel;
  95        struct perf_sample sample;
  96        union perf_event   event;
  97};
  98
  99#define sample_members \
 100        sample_member_def(sample_ip, ip, T_ULONGLONG, "event type"),                     \
 101        sample_member_def(sample_pid, pid, T_INT, "event pid"),                  \
 102        sample_member_def(sample_tid, tid, T_INT, "event tid"),                  \
 103        sample_member_def(sample_time, time, T_ULONGLONG, "event timestamp"),            \
 104        sample_member_def(sample_addr, addr, T_ULONGLONG, "event addr"),                 \
 105        sample_member_def(sample_id, id, T_ULONGLONG, "event id"),                       \
 106        sample_member_def(sample_stream_id, stream_id, T_ULONGLONG, "event stream id"), \
 107        sample_member_def(sample_period, period, T_ULONGLONG, "event period"),           \
 108        sample_member_def(sample_cpu, cpu, T_UINT, "event cpu"),
 109
 110static char pyrf_mmap_event__doc[] = PyDoc_STR("perf mmap event object.");
 111
 112static PyMemberDef pyrf_mmap_event__members[] = {
 113        sample_members
 114        member_def(perf_event_header, type, T_UINT, "event type"),
 115        member_def(perf_event_header, misc, T_UINT, "event misc"),
 116        member_def(mmap_event, pid, T_UINT, "event pid"),
 117        member_def(mmap_event, tid, T_UINT, "event tid"),
 118        member_def(mmap_event, start, T_ULONGLONG, "start of the map"),
 119        member_def(mmap_event, len, T_ULONGLONG, "map length"),
 120        member_def(mmap_event, pgoff, T_ULONGLONG, "page offset"),
 121        member_def(mmap_event, filename, T_STRING_INPLACE, "backing store"),
 122        { .name = NULL, },
 123};
 124
 125static PyObject *pyrf_mmap_event__repr(struct pyrf_event *pevent)
 126{
 127        PyObject *ret;
 128        char *s;
 129
 130        if (asprintf(&s, "{ type: mmap, pid: %u, tid: %u, start: %#" PRIx64 ", "
 131                         "length: %#" PRIx64 ", offset: %#" PRIx64 ", "
 132                         "filename: %s }",
 133                     pevent->event.mmap.pid, pevent->event.mmap.tid,
 134                     pevent->event.mmap.start, pevent->event.mmap.len,
 135                     pevent->event.mmap.pgoff, pevent->event.mmap.filename) < 0) {
 136                ret = PyErr_NoMemory();
 137        } else {
 138                ret = _PyUnicode_FromString(s);
 139                free(s);
 140        }
 141        return ret;
 142}
 143
 144static PyTypeObject pyrf_mmap_event__type = {
 145        PyVarObject_HEAD_INIT(NULL, 0)
 146        .tp_name        = "perf.mmap_event",
 147        .tp_basicsize   = sizeof(struct pyrf_event),
 148        .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 149        .tp_doc         = pyrf_mmap_event__doc,
 150        .tp_members     = pyrf_mmap_event__members,
 151        .tp_repr        = (reprfunc)pyrf_mmap_event__repr,
 152};
 153
 154static char pyrf_task_event__doc[] = PyDoc_STR("perf task (fork/exit) event object.");
 155
 156static PyMemberDef pyrf_task_event__members[] = {
 157        sample_members
 158        member_def(perf_event_header, type, T_UINT, "event type"),
 159        member_def(fork_event, pid, T_UINT, "event pid"),
 160        member_def(fork_event, ppid, T_UINT, "event ppid"),
 161        member_def(fork_event, tid, T_UINT, "event tid"),
 162        member_def(fork_event, ptid, T_UINT, "event ptid"),
 163        member_def(fork_event, time, T_ULONGLONG, "timestamp"),
 164        { .name = NULL, },
 165};
 166
 167static PyObject *pyrf_task_event__repr(struct pyrf_event *pevent)
 168{
 169        return _PyUnicode_FromFormat("{ type: %s, pid: %u, ppid: %u, tid: %u, "
 170                                   "ptid: %u, time: %" PRIu64 "}",
 171                                   pevent->event.header.type == PERF_RECORD_FORK ? "fork" : "exit",
 172                                   pevent->event.fork.pid,
 173                                   pevent->event.fork.ppid,
 174                                   pevent->event.fork.tid,
 175                                   pevent->event.fork.ptid,
 176                                   pevent->event.fork.time);
 177}
 178
 179static PyTypeObject pyrf_task_event__type = {
 180        PyVarObject_HEAD_INIT(NULL, 0)
 181        .tp_name        = "perf.task_event",
 182        .tp_basicsize   = sizeof(struct pyrf_event),
 183        .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 184        .tp_doc         = pyrf_task_event__doc,
 185        .tp_members     = pyrf_task_event__members,
 186        .tp_repr        = (reprfunc)pyrf_task_event__repr,
 187};
 188
 189static char pyrf_comm_event__doc[] = PyDoc_STR("perf comm event object.");
 190
 191static PyMemberDef pyrf_comm_event__members[] = {
 192        sample_members
 193        member_def(perf_event_header, type, T_UINT, "event type"),
 194        member_def(comm_event, pid, T_UINT, "event pid"),
 195        member_def(comm_event, tid, T_UINT, "event tid"),
 196        member_def(comm_event, comm, T_STRING_INPLACE, "process name"),
 197        { .name = NULL, },
 198};
 199
 200static PyObject *pyrf_comm_event__repr(struct pyrf_event *pevent)
 201{
 202        return _PyUnicode_FromFormat("{ type: comm, pid: %u, tid: %u, comm: %s }",
 203                                   pevent->event.comm.pid,
 204                                   pevent->event.comm.tid,
 205                                   pevent->event.comm.comm);
 206}
 207
 208static PyTypeObject pyrf_comm_event__type = {
 209        PyVarObject_HEAD_INIT(NULL, 0)
 210        .tp_name        = "perf.comm_event",
 211        .tp_basicsize   = sizeof(struct pyrf_event),
 212        .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 213        .tp_doc         = pyrf_comm_event__doc,
 214        .tp_members     = pyrf_comm_event__members,
 215        .tp_repr        = (reprfunc)pyrf_comm_event__repr,
 216};
 217
 218static char pyrf_throttle_event__doc[] = PyDoc_STR("perf throttle event object.");
 219
 220static PyMemberDef pyrf_throttle_event__members[] = {
 221        sample_members
 222        member_def(perf_event_header, type, T_UINT, "event type"),
 223        member_def(throttle_event, time, T_ULONGLONG, "timestamp"),
 224        member_def(throttle_event, id, T_ULONGLONG, "event id"),
 225        member_def(throttle_event, stream_id, T_ULONGLONG, "event stream id"),
 226        { .name = NULL, },
 227};
 228
 229static PyObject *pyrf_throttle_event__repr(struct pyrf_event *pevent)
 230{
 231        struct throttle_event *te = (struct throttle_event *)(&pevent->event.header + 1);
 232
 233        return _PyUnicode_FromFormat("{ type: %sthrottle, time: %" PRIu64 ", id: %" PRIu64
 234                                   ", stream_id: %" PRIu64 " }",
 235                                   pevent->event.header.type == PERF_RECORD_THROTTLE ? "" : "un",
 236                                   te->time, te->id, te->stream_id);
 237}
 238
 239static PyTypeObject pyrf_throttle_event__type = {
 240        PyVarObject_HEAD_INIT(NULL, 0)
 241        .tp_name        = "perf.throttle_event",
 242        .tp_basicsize   = sizeof(struct pyrf_event),
 243        .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 244        .tp_doc         = pyrf_throttle_event__doc,
 245        .tp_members     = pyrf_throttle_event__members,
 246        .tp_repr        = (reprfunc)pyrf_throttle_event__repr,
 247};
 248
 249static char pyrf_lost_event__doc[] = PyDoc_STR("perf lost event object.");
 250
 251static PyMemberDef pyrf_lost_event__members[] = {
 252        sample_members
 253        member_def(lost_event, id, T_ULONGLONG, "event id"),
 254        member_def(lost_event, lost, T_ULONGLONG, "number of lost events"),
 255        { .name = NULL, },
 256};
 257
 258static PyObject *pyrf_lost_event__repr(struct pyrf_event *pevent)
 259{
 260        PyObject *ret;
 261        char *s;
 262
 263        if (asprintf(&s, "{ type: lost, id: %#" PRIx64 ", "
 264                         "lost: %#" PRIx64 " }",
 265                     pevent->event.lost.id, pevent->event.lost.lost) < 0) {
 266                ret = PyErr_NoMemory();
 267        } else {
 268                ret = _PyUnicode_FromString(s);
 269                free(s);
 270        }
 271        return ret;
 272}
 273
 274static PyTypeObject pyrf_lost_event__type = {
 275        PyVarObject_HEAD_INIT(NULL, 0)
 276        .tp_name        = "perf.lost_event",
 277        .tp_basicsize   = sizeof(struct pyrf_event),
 278        .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 279        .tp_doc         = pyrf_lost_event__doc,
 280        .tp_members     = pyrf_lost_event__members,
 281        .tp_repr        = (reprfunc)pyrf_lost_event__repr,
 282};
 283
 284static char pyrf_read_event__doc[] = PyDoc_STR("perf read event object.");
 285
 286static PyMemberDef pyrf_read_event__members[] = {
 287        sample_members
 288        member_def(read_event, pid, T_UINT, "event pid"),
 289        member_def(read_event, tid, T_UINT, "event tid"),
 290        { .name = NULL, },
 291};
 292
 293static PyObject *pyrf_read_event__repr(struct pyrf_event *pevent)
 294{
 295        return _PyUnicode_FromFormat("{ type: read, pid: %u, tid: %u }",
 296                                   pevent->event.read.pid,
 297                                   pevent->event.read.tid);
 298        /*
 299         * FIXME: return the array of read values,
 300         * making this method useful ;-)
 301         */
 302}
 303
 304static PyTypeObject pyrf_read_event__type = {
 305        PyVarObject_HEAD_INIT(NULL, 0)
 306        .tp_name        = "perf.read_event",
 307        .tp_basicsize   = sizeof(struct pyrf_event),
 308        .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 309        .tp_doc         = pyrf_read_event__doc,
 310        .tp_members     = pyrf_read_event__members,
 311        .tp_repr        = (reprfunc)pyrf_read_event__repr,
 312};
 313
 314static char pyrf_sample_event__doc[] = PyDoc_STR("perf sample event object.");
 315
 316static PyMemberDef pyrf_sample_event__members[] = {
 317        sample_members
 318        member_def(perf_event_header, type, T_UINT, "event type"),
 319        { .name = NULL, },
 320};
 321
 322static PyObject *pyrf_sample_event__repr(struct pyrf_event *pevent)
 323{
 324        PyObject *ret;
 325        char *s;
 326
 327        if (asprintf(&s, "{ type: sample }") < 0) {
 328                ret = PyErr_NoMemory();
 329        } else {
 330                ret = _PyUnicode_FromString(s);
 331                free(s);
 332        }
 333        return ret;
 334}
 335
 336static bool is_tracepoint(struct pyrf_event *pevent)
 337{
 338        return pevent->evsel->attr.type == PERF_TYPE_TRACEPOINT;
 339}
 340
 341static PyObject*
 342tracepoint_field(struct pyrf_event *pe, struct format_field *field)
 343{
 344        struct pevent *pevent = field->event->pevent;
 345        void *data = pe->sample.raw_data;
 346        PyObject *ret = NULL;
 347        unsigned long long val;
 348        unsigned int offset, len;
 349
 350        if (field->flags & FIELD_IS_ARRAY) {
 351                offset = field->offset;
 352                len    = field->size;
 353                if (field->flags & FIELD_IS_DYNAMIC) {
 354                        val     = pevent_read_number(pevent, data + offset, len);
 355                        offset  = val;
 356                        len     = offset >> 16;
 357                        offset &= 0xffff;
 358                }
 359                if (field->flags & FIELD_IS_STRING &&
 360                    is_printable_array(data + offset, len)) {
 361                        ret = _PyUnicode_FromString((char *)data + offset);
 362                } else {
 363                        ret = PyByteArray_FromStringAndSize((const char *) data + offset, len);
 364                        field->flags &= ~FIELD_IS_STRING;
 365                }
 366        } else {
 367                val = pevent_read_number(pevent, data + field->offset,
 368                                         field->size);
 369                if (field->flags & FIELD_IS_POINTER)
 370                        ret = PyLong_FromUnsignedLong((unsigned long) val);
 371                else if (field->flags & FIELD_IS_SIGNED)
 372                        ret = PyLong_FromLong((long) val);
 373                else
 374                        ret = PyLong_FromUnsignedLong((unsigned long) val);
 375        }
 376
 377        return ret;
 378}
 379
 380static PyObject*
 381get_tracepoint_field(struct pyrf_event *pevent, PyObject *attr_name)
 382{
 383        const char *str = _PyUnicode_AsString(PyObject_Str(attr_name));
 384        struct perf_evsel *evsel = pevent->evsel;
 385        struct format_field *field;
 386
 387        if (!evsel->tp_format) {
 388                struct event_format *tp_format;
 389
 390                tp_format = trace_event__tp_format_id(evsel->attr.config);
 391                if (!tp_format)
 392                        return NULL;
 393
 394                evsel->tp_format = tp_format;
 395        }
 396
 397        field = pevent_find_any_field(evsel->tp_format, str);
 398        if (!field)
 399                return NULL;
 400
 401        return tracepoint_field(pevent, field);
 402}
 403
 404static PyObject*
 405pyrf_sample_event__getattro(struct pyrf_event *pevent, PyObject *attr_name)
 406{
 407        PyObject *obj = NULL;
 408
 409        if (is_tracepoint(pevent))
 410                obj = get_tracepoint_field(pevent, attr_name);
 411
 412        return obj ?: PyObject_GenericGetAttr((PyObject *) pevent, attr_name);
 413}
 414
 415static PyTypeObject pyrf_sample_event__type = {
 416        PyVarObject_HEAD_INIT(NULL, 0)
 417        .tp_name        = "perf.sample_event",
 418        .tp_basicsize   = sizeof(struct pyrf_event),
 419        .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 420        .tp_doc         = pyrf_sample_event__doc,
 421        .tp_members     = pyrf_sample_event__members,
 422        .tp_repr        = (reprfunc)pyrf_sample_event__repr,
 423        .tp_getattro    = (getattrofunc) pyrf_sample_event__getattro,
 424};
 425
 426static char pyrf_context_switch_event__doc[] = PyDoc_STR("perf context_switch event object.");
 427
 428static PyMemberDef pyrf_context_switch_event__members[] = {
 429        sample_members
 430        member_def(perf_event_header, type, T_UINT, "event type"),
 431        member_def(context_switch_event, next_prev_pid, T_UINT, "next/prev pid"),
 432        member_def(context_switch_event, next_prev_tid, T_UINT, "next/prev tid"),
 433        { .name = NULL, },
 434};
 435
 436static PyObject *pyrf_context_switch_event__repr(struct pyrf_event *pevent)
 437{
 438        PyObject *ret;
 439        char *s;
 440
 441        if (asprintf(&s, "{ type: context_switch, next_prev_pid: %u, next_prev_tid: %u, switch_out: %u }",
 442                     pevent->event.context_switch.next_prev_pid,
 443                     pevent->event.context_switch.next_prev_tid,
 444                     !!(pevent->event.header.misc & PERF_RECORD_MISC_SWITCH_OUT)) < 0) {
 445                ret = PyErr_NoMemory();
 446        } else {
 447                ret = _PyUnicode_FromString(s);
 448                free(s);
 449        }
 450        return ret;
 451}
 452
 453static PyTypeObject pyrf_context_switch_event__type = {
 454        PyVarObject_HEAD_INIT(NULL, 0)
 455        .tp_name        = "perf.context_switch_event",
 456        .tp_basicsize   = sizeof(struct pyrf_event),
 457        .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 458        .tp_doc         = pyrf_context_switch_event__doc,
 459        .tp_members     = pyrf_context_switch_event__members,
 460        .tp_repr        = (reprfunc)pyrf_context_switch_event__repr,
 461};
 462
 463static int pyrf_event__setup_types(void)
 464{
 465        int err;
 466        pyrf_mmap_event__type.tp_new =
 467        pyrf_task_event__type.tp_new =
 468        pyrf_comm_event__type.tp_new =
 469        pyrf_lost_event__type.tp_new =
 470        pyrf_read_event__type.tp_new =
 471        pyrf_sample_event__type.tp_new =
 472        pyrf_context_switch_event__type.tp_new =
 473        pyrf_throttle_event__type.tp_new = PyType_GenericNew;
 474        err = PyType_Ready(&pyrf_mmap_event__type);
 475        if (err < 0)
 476                goto out;
 477        err = PyType_Ready(&pyrf_lost_event__type);
 478        if (err < 0)
 479                goto out;
 480        err = PyType_Ready(&pyrf_task_event__type);
 481        if (err < 0)
 482                goto out;
 483        err = PyType_Ready(&pyrf_comm_event__type);
 484        if (err < 0)
 485                goto out;
 486        err = PyType_Ready(&pyrf_throttle_event__type);
 487        if (err < 0)
 488                goto out;
 489        err = PyType_Ready(&pyrf_read_event__type);
 490        if (err < 0)
 491                goto out;
 492        err = PyType_Ready(&pyrf_sample_event__type);
 493        if (err < 0)
 494                goto out;
 495        err = PyType_Ready(&pyrf_context_switch_event__type);
 496        if (err < 0)
 497                goto out;
 498out:
 499        return err;
 500}
 501
 502static PyTypeObject *pyrf_event__type[] = {
 503        [PERF_RECORD_MMAP]       = &pyrf_mmap_event__type,
 504        [PERF_RECORD_LOST]       = &pyrf_lost_event__type,
 505        [PERF_RECORD_COMM]       = &pyrf_comm_event__type,
 506        [PERF_RECORD_EXIT]       = &pyrf_task_event__type,
 507        [PERF_RECORD_THROTTLE]   = &pyrf_throttle_event__type,
 508        [PERF_RECORD_UNTHROTTLE] = &pyrf_throttle_event__type,
 509        [PERF_RECORD_FORK]       = &pyrf_task_event__type,
 510        [PERF_RECORD_READ]       = &pyrf_read_event__type,
 511        [PERF_RECORD_SAMPLE]     = &pyrf_sample_event__type,
 512        [PERF_RECORD_SWITCH]     = &pyrf_context_switch_event__type,
 513        [PERF_RECORD_SWITCH_CPU_WIDE]  = &pyrf_context_switch_event__type,
 514};
 515
 516static PyObject *pyrf_event__new(union perf_event *event)
 517{
 518        struct pyrf_event *pevent;
 519        PyTypeObject *ptype;
 520
 521        if ((event->header.type < PERF_RECORD_MMAP ||
 522             event->header.type > PERF_RECORD_SAMPLE) &&
 523            !(event->header.type == PERF_RECORD_SWITCH ||
 524              event->header.type == PERF_RECORD_SWITCH_CPU_WIDE))
 525                return NULL;
 526
 527        ptype = pyrf_event__type[event->header.type];
 528        pevent = PyObject_New(struct pyrf_event, ptype);
 529        if (pevent != NULL)
 530                memcpy(&pevent->event, event, event->header.size);
 531        return (PyObject *)pevent;
 532}
 533
 534struct pyrf_cpu_map {
 535        PyObject_HEAD
 536
 537        struct cpu_map *cpus;
 538};
 539
 540static int pyrf_cpu_map__init(struct pyrf_cpu_map *pcpus,
 541                              PyObject *args, PyObject *kwargs)
 542{
 543        static char *kwlist[] = { "cpustr", NULL };
 544        char *cpustr = NULL;
 545
 546        if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|s",
 547                                         kwlist, &cpustr))
 548                return -1;
 549
 550        pcpus->cpus = cpu_map__new(cpustr);
 551        if (pcpus->cpus == NULL)
 552                return -1;
 553        return 0;
 554}
 555
 556static void pyrf_cpu_map__delete(struct pyrf_cpu_map *pcpus)
 557{
 558        cpu_map__put(pcpus->cpus);
 559        Py_TYPE(pcpus)->tp_free((PyObject*)pcpus);
 560}
 561
 562static Py_ssize_t pyrf_cpu_map__length(PyObject *obj)
 563{
 564        struct pyrf_cpu_map *pcpus = (void *)obj;
 565
 566        return pcpus->cpus->nr;
 567}
 568
 569static PyObject *pyrf_cpu_map__item(PyObject *obj, Py_ssize_t i)
 570{
 571        struct pyrf_cpu_map *pcpus = (void *)obj;
 572
 573        if (i >= pcpus->cpus->nr)
 574                return NULL;
 575
 576        return Py_BuildValue("i", pcpus->cpus->map[i]);
 577}
 578
 579static PySequenceMethods pyrf_cpu_map__sequence_methods = {
 580        .sq_length = pyrf_cpu_map__length,
 581        .sq_item   = pyrf_cpu_map__item,
 582};
 583
 584static char pyrf_cpu_map__doc[] = PyDoc_STR("cpu map object.");
 585
 586static PyTypeObject pyrf_cpu_map__type = {
 587        PyVarObject_HEAD_INIT(NULL, 0)
 588        .tp_name        = "perf.cpu_map",
 589        .tp_basicsize   = sizeof(struct pyrf_cpu_map),
 590        .tp_dealloc     = (destructor)pyrf_cpu_map__delete,
 591        .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 592        .tp_doc         = pyrf_cpu_map__doc,
 593        .tp_as_sequence = &pyrf_cpu_map__sequence_methods,
 594        .tp_init        = (initproc)pyrf_cpu_map__init,
 595};
 596
 597static int pyrf_cpu_map__setup_types(void)
 598{
 599        pyrf_cpu_map__type.tp_new = PyType_GenericNew;
 600        return PyType_Ready(&pyrf_cpu_map__type);
 601}
 602
 603struct pyrf_thread_map {
 604        PyObject_HEAD
 605
 606        struct thread_map *threads;
 607};
 608
 609static int pyrf_thread_map__init(struct pyrf_thread_map *pthreads,
 610                                 PyObject *args, PyObject *kwargs)
 611{
 612        static char *kwlist[] = { "pid", "tid", "uid", NULL };
 613        int pid = -1, tid = -1, uid = UINT_MAX;
 614
 615        if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|iii",
 616                                         kwlist, &pid, &tid, &uid))
 617                return -1;
 618
 619        pthreads->threads = thread_map__new(pid, tid, uid);
 620        if (pthreads->threads == NULL)
 621                return -1;
 622        return 0;
 623}
 624
 625static void pyrf_thread_map__delete(struct pyrf_thread_map *pthreads)
 626{
 627        thread_map__put(pthreads->threads);
 628        Py_TYPE(pthreads)->tp_free((PyObject*)pthreads);
 629}
 630
 631static Py_ssize_t pyrf_thread_map__length(PyObject *obj)
 632{
 633        struct pyrf_thread_map *pthreads = (void *)obj;
 634
 635        return pthreads->threads->nr;
 636}
 637
 638static PyObject *pyrf_thread_map__item(PyObject *obj, Py_ssize_t i)
 639{
 640        struct pyrf_thread_map *pthreads = (void *)obj;
 641
 642        if (i >= pthreads->threads->nr)
 643                return NULL;
 644
 645        return Py_BuildValue("i", pthreads->threads->map[i]);
 646}
 647
 648static PySequenceMethods pyrf_thread_map__sequence_methods = {
 649        .sq_length = pyrf_thread_map__length,
 650        .sq_item   = pyrf_thread_map__item,
 651};
 652
 653static char pyrf_thread_map__doc[] = PyDoc_STR("thread map object.");
 654
 655static PyTypeObject pyrf_thread_map__type = {
 656        PyVarObject_HEAD_INIT(NULL, 0)
 657        .tp_name        = "perf.thread_map",
 658        .tp_basicsize   = sizeof(struct pyrf_thread_map),
 659        .tp_dealloc     = (destructor)pyrf_thread_map__delete,
 660        .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 661        .tp_doc         = pyrf_thread_map__doc,
 662        .tp_as_sequence = &pyrf_thread_map__sequence_methods,
 663        .tp_init        = (initproc)pyrf_thread_map__init,
 664};
 665
 666static int pyrf_thread_map__setup_types(void)
 667{
 668        pyrf_thread_map__type.tp_new = PyType_GenericNew;
 669        return PyType_Ready(&pyrf_thread_map__type);
 670}
 671
 672struct pyrf_evsel {
 673        PyObject_HEAD
 674
 675        struct perf_evsel evsel;
 676};
 677
 678static int pyrf_evsel__init(struct pyrf_evsel *pevsel,
 679                            PyObject *args, PyObject *kwargs)
 680{
 681        struct perf_event_attr attr = {
 682                .type = PERF_TYPE_HARDWARE,
 683                .config = PERF_COUNT_HW_CPU_CYCLES,
 684                .sample_type = PERF_SAMPLE_PERIOD | PERF_SAMPLE_TID,
 685        };
 686        static char *kwlist[] = {
 687                "type",
 688                "config",
 689                "sample_freq",
 690                "sample_period",
 691                "sample_type",
 692                "read_format",
 693                "disabled",
 694                "inherit",
 695                "pinned",
 696                "exclusive",
 697                "exclude_user",
 698                "exclude_kernel",
 699                "exclude_hv",
 700                "exclude_idle",
 701                "mmap",
 702                "context_switch",
 703                "comm",
 704                "freq",
 705                "inherit_stat",
 706                "enable_on_exec",
 707                "task",
 708                "watermark",
 709                "precise_ip",
 710                "mmap_data",
 711                "sample_id_all",
 712                "wakeup_events",
 713                "bp_type",
 714                "bp_addr",
 715                "bp_len",
 716                 NULL
 717        };
 718        u64 sample_period = 0;
 719        u32 disabled = 0,
 720            inherit = 0,
 721            pinned = 0,
 722            exclusive = 0,
 723            exclude_user = 0,
 724            exclude_kernel = 0,
 725            exclude_hv = 0,
 726            exclude_idle = 0,
 727            mmap = 0,
 728            context_switch = 0,
 729            comm = 0,
 730            freq = 1,
 731            inherit_stat = 0,
 732            enable_on_exec = 0,
 733            task = 0,
 734            watermark = 0,
 735            precise_ip = 0,
 736            mmap_data = 0,
 737            sample_id_all = 1;
 738        int idx = 0;
 739
 740        if (!PyArg_ParseTupleAndKeywords(args, kwargs,
 741                                         "|iKiKKiiiiiiiiiiiiiiiiiiiiiiKK", kwlist,
 742                                         &attr.type, &attr.config, &attr.sample_freq,
 743                                         &sample_period, &attr.sample_type,
 744                                         &attr.read_format, &disabled, &inherit,
 745                                         &pinned, &exclusive, &exclude_user,
 746                                         &exclude_kernel, &exclude_hv, &exclude_idle,
 747                                         &mmap, &context_switch, &comm, &freq, &inherit_stat,
 748                                         &enable_on_exec, &task, &watermark,
 749                                         &precise_ip, &mmap_data, &sample_id_all,
 750                                         &attr.wakeup_events, &attr.bp_type,
 751                                         &attr.bp_addr, &attr.bp_len, &idx))
 752                return -1;
 753
 754        /* union... */
 755        if (sample_period != 0) {
 756                if (attr.sample_freq != 0)
 757                        return -1; /* FIXME: throw right exception */
 758                attr.sample_period = sample_period;
 759        }
 760
 761        /* Bitfields */
 762        attr.disabled       = disabled;
 763        attr.inherit        = inherit;
 764        attr.pinned         = pinned;
 765        attr.exclusive      = exclusive;
 766        attr.exclude_user   = exclude_user;
 767        attr.exclude_kernel = exclude_kernel;
 768        attr.exclude_hv     = exclude_hv;
 769        attr.exclude_idle   = exclude_idle;
 770        attr.mmap           = mmap;
 771        attr.context_switch = context_switch;
 772        attr.comm           = comm;
 773        attr.freq           = freq;
 774        attr.inherit_stat   = inherit_stat;
 775        attr.enable_on_exec = enable_on_exec;
 776        attr.task           = task;
 777        attr.watermark      = watermark;
 778        attr.precise_ip     = precise_ip;
 779        attr.mmap_data      = mmap_data;
 780        attr.sample_id_all  = sample_id_all;
 781        attr.size           = sizeof(attr);
 782
 783        perf_evsel__init(&pevsel->evsel, &attr, idx);
 784        return 0;
 785}
 786
 787static void pyrf_evsel__delete(struct pyrf_evsel *pevsel)
 788{
 789        perf_evsel__exit(&pevsel->evsel);
 790        Py_TYPE(pevsel)->tp_free((PyObject*)pevsel);
 791}
 792
 793static PyObject *pyrf_evsel__open(struct pyrf_evsel *pevsel,
 794                                  PyObject *args, PyObject *kwargs)
 795{
 796        struct perf_evsel *evsel = &pevsel->evsel;
 797        struct cpu_map *cpus = NULL;
 798        struct thread_map *threads = NULL;
 799        PyObject *pcpus = NULL, *pthreads = NULL;
 800        int group = 0, inherit = 0;
 801        static char *kwlist[] = { "cpus", "threads", "group", "inherit", NULL };
 802
 803        if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|OOii", kwlist,
 804                                         &pcpus, &pthreads, &group, &inherit))
 805                return NULL;
 806
 807        if (pthreads != NULL)
 808                threads = ((struct pyrf_thread_map *)pthreads)->threads;
 809
 810        if (pcpus != NULL)
 811                cpus = ((struct pyrf_cpu_map *)pcpus)->cpus;
 812
 813        evsel->attr.inherit = inherit;
 814        /*
 815         * This will group just the fds for this single evsel, to group
 816         * multiple events, use evlist.open().
 817         */
 818        if (perf_evsel__open(evsel, cpus, threads) < 0) {
 819                PyErr_SetFromErrno(PyExc_OSError);
 820                return NULL;
 821        }
 822
 823        Py_INCREF(Py_None);
 824        return Py_None;
 825}
 826
 827static PyMethodDef pyrf_evsel__methods[] = {
 828        {
 829                .ml_name  = "open",
 830                .ml_meth  = (PyCFunction)pyrf_evsel__open,
 831                .ml_flags = METH_VARARGS | METH_KEYWORDS,
 832                .ml_doc   = PyDoc_STR("open the event selector file descriptor table.")
 833        },
 834        { .ml_name = NULL, }
 835};
 836
 837static char pyrf_evsel__doc[] = PyDoc_STR("perf event selector list object.");
 838
 839static PyTypeObject pyrf_evsel__type = {
 840        PyVarObject_HEAD_INIT(NULL, 0)
 841        .tp_name        = "perf.evsel",
 842        .tp_basicsize   = sizeof(struct pyrf_evsel),
 843        .tp_dealloc     = (destructor)pyrf_evsel__delete,
 844        .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 845        .tp_doc         = pyrf_evsel__doc,
 846        .tp_methods     = pyrf_evsel__methods,
 847        .tp_init        = (initproc)pyrf_evsel__init,
 848};
 849
 850static int pyrf_evsel__setup_types(void)
 851{
 852        pyrf_evsel__type.tp_new = PyType_GenericNew;
 853        return PyType_Ready(&pyrf_evsel__type);
 854}
 855
 856struct pyrf_evlist {
 857        PyObject_HEAD
 858
 859        struct perf_evlist evlist;
 860};
 861
 862static int pyrf_evlist__init(struct pyrf_evlist *pevlist,
 863                             PyObject *args, PyObject *kwargs __maybe_unused)
 864{
 865        PyObject *pcpus = NULL, *pthreads = NULL;
 866        struct cpu_map *cpus;
 867        struct thread_map *threads;
 868
 869        if (!PyArg_ParseTuple(args, "OO", &pcpus, &pthreads))
 870                return -1;
 871
 872        threads = ((struct pyrf_thread_map *)pthreads)->threads;
 873        cpus = ((struct pyrf_cpu_map *)pcpus)->cpus;
 874        perf_evlist__init(&pevlist->evlist, cpus, threads);
 875        return 0;
 876}
 877
 878static void pyrf_evlist__delete(struct pyrf_evlist *pevlist)
 879{
 880        perf_evlist__exit(&pevlist->evlist);
 881        Py_TYPE(pevlist)->tp_free((PyObject*)pevlist);
 882}
 883
 884static PyObject *pyrf_evlist__mmap(struct pyrf_evlist *pevlist,
 885                                   PyObject *args, PyObject *kwargs)
 886{
 887        struct perf_evlist *evlist = &pevlist->evlist;
 888        static char *kwlist[] = { "pages", "overwrite", NULL };
 889        int pages = 128, overwrite = false;
 890
 891        if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|ii", kwlist,
 892                                         &pages, &overwrite))
 893                return NULL;
 894
 895        if (perf_evlist__mmap(evlist, pages) < 0) {
 896                PyErr_SetFromErrno(PyExc_OSError);
 897                return NULL;
 898        }
 899
 900        Py_INCREF(Py_None);
 901        return Py_None;
 902}
 903
 904static PyObject *pyrf_evlist__poll(struct pyrf_evlist *pevlist,
 905                                   PyObject *args, PyObject *kwargs)
 906{
 907        struct perf_evlist *evlist = &pevlist->evlist;
 908        static char *kwlist[] = { "timeout", NULL };
 909        int timeout = -1, n;
 910
 911        if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|i", kwlist, &timeout))
 912                return NULL;
 913
 914        n = perf_evlist__poll(evlist, timeout);
 915        if (n < 0) {
 916                PyErr_SetFromErrno(PyExc_OSError);
 917                return NULL;
 918        }
 919
 920        return Py_BuildValue("i", n);
 921}
 922
 923static PyObject *pyrf_evlist__get_pollfd(struct pyrf_evlist *pevlist,
 924                                         PyObject *args __maybe_unused,
 925                                         PyObject *kwargs __maybe_unused)
 926{
 927        struct perf_evlist *evlist = &pevlist->evlist;
 928        PyObject *list = PyList_New(0);
 929        int i;
 930
 931        for (i = 0; i < evlist->pollfd.nr; ++i) {
 932                PyObject *file;
 933#if PY_MAJOR_VERSION < 3
 934                FILE *fp = fdopen(evlist->pollfd.entries[i].fd, "r");
 935
 936                if (fp == NULL)
 937                        goto free_list;
 938
 939                file = PyFile_FromFile(fp, "perf", "r", NULL);
 940#else
 941                file = PyFile_FromFd(evlist->pollfd.entries[i].fd, "perf", "r", -1, NULL, NULL, NULL, 1);
 942#endif
 943                if (file == NULL)
 944                        goto free_list;
 945
 946                if (PyList_Append(list, file) != 0) {
 947                        Py_DECREF(file);
 948                        goto free_list;
 949                }
 950
 951                Py_DECREF(file);
 952        }
 953
 954        return list;
 955free_list:
 956        return PyErr_NoMemory();
 957}
 958
 959
 960static PyObject *pyrf_evlist__add(struct pyrf_evlist *pevlist,
 961                                  PyObject *args,
 962                                  PyObject *kwargs __maybe_unused)
 963{
 964        struct perf_evlist *evlist = &pevlist->evlist;
 965        PyObject *pevsel;
 966        struct perf_evsel *evsel;
 967
 968        if (!PyArg_ParseTuple(args, "O", &pevsel))
 969                return NULL;
 970
 971        Py_INCREF(pevsel);
 972        evsel = &((struct pyrf_evsel *)pevsel)->evsel;
 973        evsel->idx = evlist->nr_entries;
 974        perf_evlist__add(evlist, evsel);
 975
 976        return Py_BuildValue("i", evlist->nr_entries);
 977}
 978
 979static PyObject *pyrf_evlist__read_on_cpu(struct pyrf_evlist *pevlist,
 980                                          PyObject *args, PyObject *kwargs)
 981{
 982        struct perf_evlist *evlist = &pevlist->evlist;
 983        union perf_event *event;
 984        int sample_id_all = 1, cpu;
 985        static char *kwlist[] = { "cpu", "sample_id_all", NULL };
 986        struct perf_mmap *md;
 987        int err;
 988
 989        if (!PyArg_ParseTupleAndKeywords(args, kwargs, "i|i", kwlist,
 990                                         &cpu, &sample_id_all))
 991                return NULL;
 992
 993        md = &evlist->mmap[cpu];
 994        if (perf_mmap__read_init(md) < 0)
 995                goto end;
 996
 997        event = perf_mmap__read_event(md);
 998        if (event != NULL) {
 999                PyObject *pyevent = pyrf_event__new(event);
1000                struct pyrf_event *pevent = (struct pyrf_event *)pyevent;
1001                struct perf_evsel *evsel;
1002
1003                if (pyevent == NULL)
1004                        return PyErr_NoMemory();
1005
1006                evsel = perf_evlist__event2evsel(evlist, event);
1007                if (!evsel) {
1008                        Py_INCREF(Py_None);
1009                        return Py_None;
1010                }
1011
1012                pevent->evsel = evsel;
1013
1014                err = perf_evsel__parse_sample(evsel, event, &pevent->sample);
1015
1016                /* Consume the even only after we parsed it out. */
1017                perf_mmap__consume(md);
1018
1019                if (err)
1020                        return PyErr_Format(PyExc_OSError,
1021                                            "perf: can't parse sample, err=%d", err);
1022                return pyevent;
1023        }
1024end:
1025        Py_INCREF(Py_None);
1026        return Py_None;
1027}
1028
1029static PyObject *pyrf_evlist__open(struct pyrf_evlist *pevlist,
1030                                   PyObject *args, PyObject *kwargs)
1031{
1032        struct perf_evlist *evlist = &pevlist->evlist;
1033        int group = 0;
1034        static char *kwlist[] = { "group", NULL };
1035
1036        if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|OOii", kwlist, &group))
1037                return NULL;
1038
1039        if (group)
1040                perf_evlist__set_leader(evlist);
1041
1042        if (perf_evlist__open(evlist) < 0) {
1043                PyErr_SetFromErrno(PyExc_OSError);
1044                return NULL;
1045        }
1046
1047        Py_INCREF(Py_None);
1048        return Py_None;
1049}
1050
1051static PyMethodDef pyrf_evlist__methods[] = {
1052        {
1053                .ml_name  = "mmap",
1054                .ml_meth  = (PyCFunction)pyrf_evlist__mmap,
1055                .ml_flags = METH_VARARGS | METH_KEYWORDS,
1056                .ml_doc   = PyDoc_STR("mmap the file descriptor table.")
1057        },
1058        {
1059                .ml_name  = "open",
1060                .ml_meth  = (PyCFunction)pyrf_evlist__open,
1061                .ml_flags = METH_VARARGS | METH_KEYWORDS,
1062                .ml_doc   = PyDoc_STR("open the file descriptors.")
1063        },
1064        {
1065                .ml_name  = "poll",
1066                .ml_meth  = (PyCFunction)pyrf_evlist__poll,
1067                .ml_flags = METH_VARARGS | METH_KEYWORDS,
1068                .ml_doc   = PyDoc_STR("poll the file descriptor table.")
1069        },
1070        {
1071                .ml_name  = "get_pollfd",
1072                .ml_meth  = (PyCFunction)pyrf_evlist__get_pollfd,
1073                .ml_flags = METH_VARARGS | METH_KEYWORDS,
1074                .ml_doc   = PyDoc_STR("get the poll file descriptor table.")
1075        },
1076        {
1077                .ml_name  = "add",
1078                .ml_meth  = (PyCFunction)pyrf_evlist__add,
1079                .ml_flags = METH_VARARGS | METH_KEYWORDS,
1080                .ml_doc   = PyDoc_STR("adds an event selector to the list.")
1081        },
1082        {
1083                .ml_name  = "read_on_cpu",
1084                .ml_meth  = (PyCFunction)pyrf_evlist__read_on_cpu,
1085                .ml_flags = METH_VARARGS | METH_KEYWORDS,
1086                .ml_doc   = PyDoc_STR("reads an event.")
1087        },
1088        { .ml_name = NULL, }
1089};
1090
1091static Py_ssize_t pyrf_evlist__length(PyObject *obj)
1092{
1093        struct pyrf_evlist *pevlist = (void *)obj;
1094
1095        return pevlist->evlist.nr_entries;
1096}
1097
1098static PyObject *pyrf_evlist__item(PyObject *obj, Py_ssize_t i)
1099{
1100        struct pyrf_evlist *pevlist = (void *)obj;
1101        struct perf_evsel *pos;
1102
1103        if (i >= pevlist->evlist.nr_entries)
1104                return NULL;
1105
1106        evlist__for_each_entry(&pevlist->evlist, pos) {
1107                if (i-- == 0)
1108                        break;
1109        }
1110
1111        return Py_BuildValue("O", container_of(pos, struct pyrf_evsel, evsel));
1112}
1113
1114static PySequenceMethods pyrf_evlist__sequence_methods = {
1115        .sq_length = pyrf_evlist__length,
1116        .sq_item   = pyrf_evlist__item,
1117};
1118
1119static char pyrf_evlist__doc[] = PyDoc_STR("perf event selector list object.");
1120
1121static PyTypeObject pyrf_evlist__type = {
1122        PyVarObject_HEAD_INIT(NULL, 0)
1123        .tp_name        = "perf.evlist",
1124        .tp_basicsize   = sizeof(struct pyrf_evlist),
1125        .tp_dealloc     = (destructor)pyrf_evlist__delete,
1126        .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
1127        .tp_as_sequence = &pyrf_evlist__sequence_methods,
1128        .tp_doc         = pyrf_evlist__doc,
1129        .tp_methods     = pyrf_evlist__methods,
1130        .tp_init        = (initproc)pyrf_evlist__init,
1131};
1132
1133static int pyrf_evlist__setup_types(void)
1134{
1135        pyrf_evlist__type.tp_new = PyType_GenericNew;
1136        return PyType_Ready(&pyrf_evlist__type);
1137}
1138
1139#define PERF_CONST(name) { #name, PERF_##name }
1140
1141static struct {
1142        const char *name;
1143        int         value;
1144} perf__constants[] = {
1145        PERF_CONST(TYPE_HARDWARE),
1146        PERF_CONST(TYPE_SOFTWARE),
1147        PERF_CONST(TYPE_TRACEPOINT),
1148        PERF_CONST(TYPE_HW_CACHE),
1149        PERF_CONST(TYPE_RAW),
1150        PERF_CONST(TYPE_BREAKPOINT),
1151
1152        PERF_CONST(COUNT_HW_CPU_CYCLES),
1153        PERF_CONST(COUNT_HW_INSTRUCTIONS),
1154        PERF_CONST(COUNT_HW_CACHE_REFERENCES),
1155        PERF_CONST(COUNT_HW_CACHE_MISSES),
1156        PERF_CONST(COUNT_HW_BRANCH_INSTRUCTIONS),
1157        PERF_CONST(COUNT_HW_BRANCH_MISSES),
1158        PERF_CONST(COUNT_HW_BUS_CYCLES),
1159        PERF_CONST(COUNT_HW_CACHE_L1D),
1160        PERF_CONST(COUNT_HW_CACHE_L1I),
1161        PERF_CONST(COUNT_HW_CACHE_LL),
1162        PERF_CONST(COUNT_HW_CACHE_DTLB),
1163        PERF_CONST(COUNT_HW_CACHE_ITLB),
1164        PERF_CONST(COUNT_HW_CACHE_BPU),
1165        PERF_CONST(COUNT_HW_CACHE_OP_READ),
1166        PERF_CONST(COUNT_HW_CACHE_OP_WRITE),
1167        PERF_CONST(COUNT_HW_CACHE_OP_PREFETCH),
1168        PERF_CONST(COUNT_HW_CACHE_RESULT_ACCESS),
1169        PERF_CONST(COUNT_HW_CACHE_RESULT_MISS),
1170
1171        PERF_CONST(COUNT_HW_STALLED_CYCLES_FRONTEND),
1172        PERF_CONST(COUNT_HW_STALLED_CYCLES_BACKEND),
1173
1174        PERF_CONST(COUNT_SW_CPU_CLOCK),
1175        PERF_CONST(COUNT_SW_TASK_CLOCK),
1176        PERF_CONST(COUNT_SW_PAGE_FAULTS),
1177        PERF_CONST(COUNT_SW_CONTEXT_SWITCHES),
1178        PERF_CONST(COUNT_SW_CPU_MIGRATIONS),
1179        PERF_CONST(COUNT_SW_PAGE_FAULTS_MIN),
1180        PERF_CONST(COUNT_SW_PAGE_FAULTS_MAJ),
1181        PERF_CONST(COUNT_SW_ALIGNMENT_FAULTS),
1182        PERF_CONST(COUNT_SW_EMULATION_FAULTS),
1183        PERF_CONST(COUNT_SW_DUMMY),
1184
1185        PERF_CONST(SAMPLE_IP),
1186        PERF_CONST(SAMPLE_TID),
1187        PERF_CONST(SAMPLE_TIME),
1188        PERF_CONST(SAMPLE_ADDR),
1189        PERF_CONST(SAMPLE_READ),
1190        PERF_CONST(SAMPLE_CALLCHAIN),
1191        PERF_CONST(SAMPLE_ID),
1192        PERF_CONST(SAMPLE_CPU),
1193        PERF_CONST(SAMPLE_PERIOD),
1194        PERF_CONST(SAMPLE_STREAM_ID),
1195        PERF_CONST(SAMPLE_RAW),
1196
1197        PERF_CONST(FORMAT_TOTAL_TIME_ENABLED),
1198        PERF_CONST(FORMAT_TOTAL_TIME_RUNNING),
1199        PERF_CONST(FORMAT_ID),
1200        PERF_CONST(FORMAT_GROUP),
1201
1202        PERF_CONST(RECORD_MMAP),
1203        PERF_CONST(RECORD_LOST),
1204        PERF_CONST(RECORD_COMM),
1205        PERF_CONST(RECORD_EXIT),
1206        PERF_CONST(RECORD_THROTTLE),
1207        PERF_CONST(RECORD_UNTHROTTLE),
1208        PERF_CONST(RECORD_FORK),
1209        PERF_CONST(RECORD_READ),
1210        PERF_CONST(RECORD_SAMPLE),
1211        PERF_CONST(RECORD_MMAP2),
1212        PERF_CONST(RECORD_AUX),
1213        PERF_CONST(RECORD_ITRACE_START),
1214        PERF_CONST(RECORD_LOST_SAMPLES),
1215        PERF_CONST(RECORD_SWITCH),
1216        PERF_CONST(RECORD_SWITCH_CPU_WIDE),
1217
1218        PERF_CONST(RECORD_MISC_SWITCH_OUT),
1219        { .name = NULL, },
1220};
1221
1222static PyObject *pyrf__tracepoint(struct pyrf_evsel *pevsel,
1223                                  PyObject *args, PyObject *kwargs)
1224{
1225        struct event_format *tp_format;
1226        static char *kwlist[] = { "sys", "name", NULL };
1227        char *sys  = NULL;
1228        char *name = NULL;
1229
1230        if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|ss", kwlist,
1231                                         &sys, &name))
1232                return NULL;
1233
1234        tp_format = trace_event__tp_format(sys, name);
1235        if (IS_ERR(tp_format))
1236                return _PyLong_FromLong(-1);
1237
1238        return _PyLong_FromLong(tp_format->id);
1239}
1240
1241static PyMethodDef perf__methods[] = {
1242        {
1243                .ml_name  = "tracepoint",
1244                .ml_meth  = (PyCFunction) pyrf__tracepoint,
1245                .ml_flags = METH_VARARGS | METH_KEYWORDS,
1246                .ml_doc   = PyDoc_STR("Get tracepoint config.")
1247        },
1248        { .ml_name = NULL, }
1249};
1250
1251#if PY_MAJOR_VERSION < 3
1252PyMODINIT_FUNC initperf(void)
1253#else
1254PyMODINIT_FUNC PyInit_perf(void)
1255#endif
1256{
1257        PyObject *obj;
1258        int i;
1259        PyObject *dict;
1260#if PY_MAJOR_VERSION < 3
1261        PyObject *module = Py_InitModule("perf", perf__methods);
1262#else
1263        static struct PyModuleDef moduledef = {
1264                PyModuleDef_HEAD_INIT,
1265                "perf",                 /* m_name */
1266                "",                     /* m_doc */
1267                -1,                     /* m_size */
1268                perf__methods,          /* m_methods */
1269                NULL,                   /* m_reload */
1270                NULL,                   /* m_traverse */
1271                NULL,                   /* m_clear */
1272                NULL,                   /* m_free */
1273        };
1274        PyObject *module = PyModule_Create(&moduledef);
1275#endif
1276
1277        if (module == NULL ||
1278            pyrf_event__setup_types() < 0 ||
1279            pyrf_evlist__setup_types() < 0 ||
1280            pyrf_evsel__setup_types() < 0 ||
1281            pyrf_thread_map__setup_types() < 0 ||
1282            pyrf_cpu_map__setup_types() < 0)
1283#if PY_MAJOR_VERSION < 3
1284                return;
1285#else
1286                return module;
1287#endif
1288
1289        /* The page_size is placed in util object. */
1290        page_size = sysconf(_SC_PAGE_SIZE);
1291
1292        Py_INCREF(&pyrf_evlist__type);
1293        PyModule_AddObject(module, "evlist", (PyObject*)&pyrf_evlist__type);
1294
1295        Py_INCREF(&pyrf_evsel__type);
1296        PyModule_AddObject(module, "evsel", (PyObject*)&pyrf_evsel__type);
1297
1298        Py_INCREF(&pyrf_mmap_event__type);
1299        PyModule_AddObject(module, "mmap_event", (PyObject *)&pyrf_mmap_event__type);
1300
1301        Py_INCREF(&pyrf_lost_event__type);
1302        PyModule_AddObject(module, "lost_event", (PyObject *)&pyrf_lost_event__type);
1303
1304        Py_INCREF(&pyrf_comm_event__type);
1305        PyModule_AddObject(module, "comm_event", (PyObject *)&pyrf_comm_event__type);
1306
1307        Py_INCREF(&pyrf_task_event__type);
1308        PyModule_AddObject(module, "task_event", (PyObject *)&pyrf_task_event__type);
1309
1310        Py_INCREF(&pyrf_throttle_event__type);
1311        PyModule_AddObject(module, "throttle_event", (PyObject *)&pyrf_throttle_event__type);
1312
1313        Py_INCREF(&pyrf_task_event__type);
1314        PyModule_AddObject(module, "task_event", (PyObject *)&pyrf_task_event__type);
1315
1316        Py_INCREF(&pyrf_read_event__type);
1317        PyModule_AddObject(module, "read_event", (PyObject *)&pyrf_read_event__type);
1318
1319        Py_INCREF(&pyrf_sample_event__type);
1320        PyModule_AddObject(module, "sample_event", (PyObject *)&pyrf_sample_event__type);
1321
1322        Py_INCREF(&pyrf_context_switch_event__type);
1323        PyModule_AddObject(module, "switch_event", (PyObject *)&pyrf_context_switch_event__type);
1324
1325        Py_INCREF(&pyrf_thread_map__type);
1326        PyModule_AddObject(module, "thread_map", (PyObject*)&pyrf_thread_map__type);
1327
1328        Py_INCREF(&pyrf_cpu_map__type);
1329        PyModule_AddObject(module, "cpu_map", (PyObject*)&pyrf_cpu_map__type);
1330
1331        dict = PyModule_GetDict(module);
1332        if (dict == NULL)
1333                goto error;
1334
1335        for (i = 0; perf__constants[i].name != NULL; i++) {
1336                obj = _PyLong_FromLong(perf__constants[i].value);
1337                if (obj == NULL)
1338                        goto error;
1339                PyDict_SetItemString(dict, perf__constants[i].name, obj);
1340                Py_DECREF(obj);
1341        }
1342
1343error:
1344        if (PyErr_Occurred())
1345                PyErr_SetString(PyExc_ImportError, "perf: Init failed!");
1346#if PY_MAJOR_VERSION >= 3
1347        return module;
1348#endif
1349}
1350
1351/*
1352 * Dummy, to avoid dragging all the test_attr infrastructure in the python
1353 * binding.
1354 */
1355void test_attr__open(struct perf_event_attr *attr, pid_t pid, int cpu,
1356                     int fd, int group_fd, unsigned long flags)
1357{
1358}
1359