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 #ifdef HAVE_LIBTRACEEVENT
   9 #include <traceevent/event-parse.h>
  10 #endif
  11 #include <perf/mmap.h>
  12 #include "evlist.h"
  13 #include "callchain.h"
  14 #include "evsel.h"
  15 #include "event.h"
  16 #include "print_binary.h"
  17 #include "thread_map.h"
  18 #include "trace-event.h"
  19 #include "mmap.h"
  20 #include "stat.h"
  21 #include "metricgroup.h"
  22 #include "util/env.h"
  23 #include <internal/lib.h>
  24 #include "util.h"
  25
  26 #if PY_MAJOR_VERSION < 3
  27 #define _PyUnicode_FromString(arg) \
  28   PyString_FromString(arg)
  29 #define _PyUnicode_AsString(arg) \
  30   PyString_AsString(arg)
  31 #define _PyUnicode_FromFormat(...) \
  32   PyString_FromFormat(__VA_ARGS__)
  33 #define _PyLong_FromLong(arg) \
  34   PyInt_FromLong(arg)
  35
  36 #else
  37
  38 #define _PyUnicode_FromString(arg) \
  39   PyUnicode_FromString(arg)
  40 #define _PyUnicode_FromFormat(...) \
  41   PyUnicode_FromFormat(__VA_ARGS__)
  42 #define _PyLong_FromLong(arg) \
  43   PyLong_FromLong(arg)
  44 #endif
  45
  46 #ifndef Py_TYPE
  47 #define Py_TYPE(ob) (((PyObject*)(ob))->ob_type)
  48 #endif
  49
  50 /*
  51  * Provide these two so that we don't have to link against callchain.c and
  52  * start dragging hist.c, etc.
  53  */
  54 struct callchain_param callchain_param;
  55
  56 int parse_callchain_record(const char *arg __maybe_unused,
  57                            struct callchain_param *param __maybe_unused)
  58 {
  59         return 0;
  60 }
  61
  62 /*
  63  * Add these not to drag util/env.c
  64  */
  65 struct perf_env perf_env;
  66
  67 const char *perf_env__cpuid(struct perf_env *env __maybe_unused)
  68 {
  69         return NULL;
  70 }
  71
  72 // This one is a bit easier, wouldn't drag too much, but leave it as a stub we need it here
  73 const char *perf_env__arch(struct perf_env *env __maybe_unused)
  74 {
  75         return NULL;
  76 }
  77
  78 /*
  79  * Add this one here not to drag util/stat-shadow.c
  80  */
  81 void perf_stat__collect_metric_expr(struct evlist *evsel_list)
  82 {
  83 }
  84
  85 /*
  86  * This one is needed not to drag the PMU bandwagon, jevents generated
  87  * pmu_sys_event_tables, etc and evsel__find_pmu() is used so far just for
  88  * doing per PMU perf_event_attr.exclude_guest handling, not really needed, so
  89  * far, for the perf python binding known usecases, revisit if this become
  90  * necessary.
  91  */
  92 struct perf_pmu *evsel__find_pmu(struct evsel *evsel __maybe_unused)
  93 {
  94         return NULL;
  95 }
  96
  97 /*
  98  * Add this one here not to drag util/metricgroup.c
  99  */
 100 int metricgroup__copy_metric_events(struct evlist *evlist, struct cgroup *cgrp,
 101                                     struct rblist *new_metric_events,
 102                                     struct rblist *old_metric_events)
 103 {
 104         return 0;
 105 }
 106
 107 /*
 108  * XXX: All these evsel destructors need some better mechanism, like a linked
 109  * list of destructors registered when the relevant code indeed is used instead
 110  * of having more and more calls in perf_evsel__delete(). -- acme
 111  *
 112  * For now, add some more:
 113  *
 114  * Not to drag the BPF bandwagon...
 115  */
 116 void bpf_counter__destroy(struct evsel *evsel);
 117 int bpf_counter__install_pe(struct evsel *evsel, int cpu, int fd);
 118 int bpf_counter__disable(struct evsel *evsel);
 119
 120 void bpf_counter__destroy(struct evsel *evsel __maybe_unused)
 121 {
 122 }
 123
 124 int bpf_counter__install_pe(struct evsel *evsel __maybe_unused, int cpu __maybe_unused, int fd __maybe_unused)
 125 {
 126         return 0;
 127 }
 128
 129 int bpf_counter__disable(struct evsel *evsel __maybe_unused)
 130 {
 131         return 0;
 132 }
 133
 134 /*
 135  * Support debug printing even though util/debug.c is not linked.  That means
 136  * implementing 'verbose' and 'eprintf'.
 137  */
 138 int verbose;
 139 int debug_peo_args;
 140
 141 int eprintf(int level, int var, const char *fmt, ...);
 142
 143 int eprintf(int level, int var, const char *fmt, ...)
 144 {
 145         va_list args;
 146         int ret = 0;
 147
 148         if (var >= level) {
 149                 va_start(args, fmt);
 150                 ret = vfprintf(stderr, fmt, args);
 151                 va_end(args);
 152         }
 153
 154         return ret;
 155 }
 156
 157 /* Define PyVarObject_HEAD_INIT for python 2.5 */
 158 #ifndef PyVarObject_HEAD_INIT
 159 # define PyVarObject_HEAD_INIT(type, size) PyObject_HEAD_INIT(type) size,
 160 #endif
 161
 162 #if PY_MAJOR_VERSION < 3
 163 PyMODINIT_FUNC initperf(void);
 164 #else
 165 PyMODINIT_FUNC PyInit_perf(void);
 166 #endif
 167
 168 #define member_def(type, member, ptype, help) \
 169         { #member, ptype, \
 170           offsetof(struct pyrf_event, event) + offsetof(struct type, member), \
 171           0, help }
 172
 173 #define sample_member_def(name, member, ptype, help) \
 174         { #name, ptype, \
 175           offsetof(struct pyrf_event, sample) + offsetof(struct perf_sample, member), \
 176           0, help }
 177
 178 struct pyrf_event {
 179         PyObject_HEAD
 180         struct evsel *evsel;
 181         struct perf_sample sample;
 182         union perf_event   event;
 183 };
 184
 185 #define sample_members \
 186         sample_member_def(sample_ip, ip, T_ULONGLONG, "event type"),                     \
 187         sample_member_def(sample_pid, pid, T_INT, "event pid"),                  \
 188         sample_member_def(sample_tid, tid, T_INT, "event tid"),                  \
 189         sample_member_def(sample_time, time, T_ULONGLONG, "event timestamp"),            \
 190         sample_member_def(sample_addr, addr, T_ULONGLONG, "event addr"),                 \
 191         sample_member_def(sample_id, id, T_ULONGLONG, "event id"),                       \
 192         sample_member_def(sample_stream_id, stream_id, T_ULONGLONG, "event stream id"), \
 193         sample_member_def(sample_period, period, T_ULONGLONG, "event period"),           \
 194         sample_member_def(sample_cpu, cpu, T_UINT, "event cpu"),
 195
 196 static char pyrf_mmap_event__doc[] = PyDoc_STR("perf mmap event object.");
 197
 198 static PyMemberDef pyrf_mmap_event__members[] = {
 199         sample_members
 200         member_def(perf_event_header, type, T_UINT, "event type"),
 201         member_def(perf_event_header, misc, T_UINT, "event misc"),
 202         member_def(perf_record_mmap, pid, T_UINT, "event pid"),
 203         member_def(perf_record_mmap, tid, T_UINT, "event tid"),
 204         member_def(perf_record_mmap, start, T_ULONGLONG, "start of the map"),
 205         member_def(perf_record_mmap, len, T_ULONGLONG, "map length"),
 206         member_def(perf_record_mmap, pgoff, T_ULONGLONG, "page offset"),
 207         member_def(perf_record_mmap, filename, T_STRING_INPLACE, "backing store"),
 208         { .name = NULL, },
 209 };
 210
 211 static PyObject *pyrf_mmap_event__repr(struct pyrf_event *pevent)
 212 {
 213         PyObject *ret;
 214         char *s;
 215
 216         if (asprintf(&s, "{ type: mmap, pid: %u, tid: %u, start: %#" PRI_lx64 ", "
 217                          "length: %#" PRI_lx64 ", offset: %#" PRI_lx64 ", "
 218                          "filename: %s }",
 219                      pevent->event.mmap.pid, pevent->event.mmap.tid,
 220                      pevent->event.mmap.start, pevent->event.mmap.len,
 221                      pevent->event.mmap.pgoff, pevent->event.mmap.filename) < 0) {
 222                 ret = PyErr_NoMemory();
 223         } else {
 224                 ret = _PyUnicode_FromString(s);
 225                 free(s);
 226         }
 227         return ret;
 228 }
 229
 230 static PyTypeObject pyrf_mmap_event__type = {
 231         PyVarObject_HEAD_INIT(NULL, 0)
 232         .tp_name        = "perf.mmap_event",
 233         .tp_basicsize   = sizeof(struct pyrf_event),
 234         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 235         .tp_doc         = pyrf_mmap_event__doc,
 236         .tp_members     = pyrf_mmap_event__members,
 237         .tp_repr        = (reprfunc)pyrf_mmap_event__repr,
 238 };
 239
 240 static char pyrf_task_event__doc[] = PyDoc_STR("perf task (fork/exit) event object.");
 241
 242 static PyMemberDef pyrf_task_event__members[] = {
 243         sample_members
 244         member_def(perf_event_header, type, T_UINT, "event type"),
 245         member_def(perf_record_fork, pid, T_UINT, "event pid"),
 246         member_def(perf_record_fork, ppid, T_UINT, "event ppid"),
 247         member_def(perf_record_fork, tid, T_UINT, "event tid"),
 248         member_def(perf_record_fork, ptid, T_UINT, "event ptid"),
 249         member_def(perf_record_fork, time, T_ULONGLONG, "timestamp"),
 250         { .name = NULL, },
 251 };
 252
 253 static PyObject *pyrf_task_event__repr(struct pyrf_event *pevent)
 254 {
 255         return _PyUnicode_FromFormat("{ type: %s, pid: %u, ppid: %u, tid: %u, "
 256                                    "ptid: %u, time: %" PRI_lu64 "}",
 257                                    pevent->event.header.type == PERF_RECORD_FORK ? "fork" : "exit",
 258                                    pevent->event.fork.pid,
 259                                    pevent->event.fork.ppid,
 260                                    pevent->event.fork.tid,
 261                                    pevent->event.fork.ptid,
 262                                    pevent->event.fork.time);
 263 }
 264
 265 static PyTypeObject pyrf_task_event__type = {
 266         PyVarObject_HEAD_INIT(NULL, 0)
 267         .tp_name        = "perf.task_event",
 268         .tp_basicsize   = sizeof(struct pyrf_event),
 269         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 270         .tp_doc         = pyrf_task_event__doc,
 271         .tp_members     = pyrf_task_event__members,
 272         .tp_repr        = (reprfunc)pyrf_task_event__repr,
 273 };
 274
 275 static char pyrf_comm_event__doc[] = PyDoc_STR("perf comm event object.");
 276
 277 static PyMemberDef pyrf_comm_event__members[] = {
 278         sample_members
 279         member_def(perf_event_header, type, T_UINT, "event type"),
 280         member_def(perf_record_comm, pid, T_UINT, "event pid"),
 281         member_def(perf_record_comm, tid, T_UINT, "event tid"),
 282         member_def(perf_record_comm, comm, T_STRING_INPLACE, "process name"),
 283         { .name = NULL, },
 284 };
 285
 286 static PyObject *pyrf_comm_event__repr(struct pyrf_event *pevent)
 287 {
 288         return _PyUnicode_FromFormat("{ type: comm, pid: %u, tid: %u, comm: %s }",
 289                                    pevent->event.comm.pid,
 290                                    pevent->event.comm.tid,
 291                                    pevent->event.comm.comm);
 292 }
 293
 294 static PyTypeObject pyrf_comm_event__type = {
 295         PyVarObject_HEAD_INIT(NULL, 0)
 296         .tp_name        = "perf.comm_event",
 297         .tp_basicsize   = sizeof(struct pyrf_event),
 298         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 299         .tp_doc         = pyrf_comm_event__doc,
 300         .tp_members     = pyrf_comm_event__members,
 301         .tp_repr        = (reprfunc)pyrf_comm_event__repr,
 302 };
 303
 304 static char pyrf_throttle_event__doc[] = PyDoc_STR("perf throttle event object.");
 305
 306 static PyMemberDef pyrf_throttle_event__members[] = {
 307         sample_members
 308         member_def(perf_event_header, type, T_UINT, "event type"),
 309         member_def(perf_record_throttle, time, T_ULONGLONG, "timestamp"),
 310         member_def(perf_record_throttle, id, T_ULONGLONG, "event id"),
 311         member_def(perf_record_throttle, stream_id, T_ULONGLONG, "event stream id"),
 312         { .name = NULL, },
 313 };
 314
 315 static PyObject *pyrf_throttle_event__repr(struct pyrf_event *pevent)
 316 {
 317         struct perf_record_throttle *te = (struct perf_record_throttle *)(&pevent->event.header + 1);
 318
 319         return _PyUnicode_FromFormat("{ type: %sthrottle, time: %" PRI_lu64 ", id: %" PRI_lu64
 320                                    ", stream_id: %" PRI_lu64 " }",
 321                                    pevent->event.header.type == PERF_RECORD_THROTTLE ? "" : "un",
 322                                    te->time, te->id, te->stream_id);
 323 }
 324
 325 static PyTypeObject pyrf_throttle_event__type = {
 326         PyVarObject_HEAD_INIT(NULL, 0)
 327         .tp_name        = "perf.throttle_event",
 328         .tp_basicsize   = sizeof(struct pyrf_event),
 329         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 330         .tp_doc         = pyrf_throttle_event__doc,
 331         .tp_members     = pyrf_throttle_event__members,
 332         .tp_repr        = (reprfunc)pyrf_throttle_event__repr,
 333 };
 334
 335 static char pyrf_lost_event__doc[] = PyDoc_STR("perf lost event object.");
 336
 337 static PyMemberDef pyrf_lost_event__members[] = {
 338         sample_members
 339         member_def(perf_record_lost, id, T_ULONGLONG, "event id"),
 340         member_def(perf_record_lost, lost, T_ULONGLONG, "number of lost events"),
 341         { .name = NULL, },
 342 };
 343
 344 static PyObject *pyrf_lost_event__repr(struct pyrf_event *pevent)
 345 {
 346         PyObject *ret;
 347         char *s;
 348
 349         if (asprintf(&s, "{ type: lost, id: %#" PRI_lx64 ", "
 350                          "lost: %#" PRI_lx64 " }",
 351                      pevent->event.lost.id, pevent->event.lost.lost) < 0) {
 352                 ret = PyErr_NoMemory();
 353         } else {
 354                 ret = _PyUnicode_FromString(s);
 355                 free(s);
 356         }
 357         return ret;
 358 }
 359
 360 static PyTypeObject pyrf_lost_event__type = {
 361         PyVarObject_HEAD_INIT(NULL, 0)
 362         .tp_name        = "perf.lost_event",
 363         .tp_basicsize   = sizeof(struct pyrf_event),
 364         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 365         .tp_doc         = pyrf_lost_event__doc,
 366         .tp_members     = pyrf_lost_event__members,
 367         .tp_repr        = (reprfunc)pyrf_lost_event__repr,
 368 };
 369
 370 static char pyrf_read_event__doc[] = PyDoc_STR("perf read event object.");
 371
 372 static PyMemberDef pyrf_read_event__members[] = {
 373         sample_members
 374         member_def(perf_record_read, pid, T_UINT, "event pid"),
 375         member_def(perf_record_read, tid, T_UINT, "event tid"),
 376         { .name = NULL, },
 377 };
 378
 379 static PyObject *pyrf_read_event__repr(struct pyrf_event *pevent)
 380 {
 381         return _PyUnicode_FromFormat("{ type: read, pid: %u, tid: %u }",
 382                                    pevent->event.read.pid,
 383                                    pevent->event.read.tid);
 384         /*
 385          * FIXME: return the array of read values,
 386          * making this method useful ;-)
 387          */
 388 }
 389
 390 static PyTypeObject pyrf_read_event__type = {
 391         PyVarObject_HEAD_INIT(NULL, 0)
 392         .tp_name        = "perf.read_event",
 393         .tp_basicsize   = sizeof(struct pyrf_event),
 394         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 395         .tp_doc         = pyrf_read_event__doc,
 396         .tp_members     = pyrf_read_event__members,
 397         .tp_repr        = (reprfunc)pyrf_read_event__repr,
 398 };
 399
 400 static char pyrf_sample_event__doc[] = PyDoc_STR("perf sample event object.");
 401
 402 static PyMemberDef pyrf_sample_event__members[] = {
 403         sample_members
 404         member_def(perf_event_header, type, T_UINT, "event type"),
 405         { .name = NULL, },
 406 };
 407
 408 static PyObject *pyrf_sample_event__repr(struct pyrf_event *pevent)
 409 {
 410         PyObject *ret;
 411         char *s;
 412
 413         if (asprintf(&s, "{ type: sample }") < 0) {
 414                 ret = PyErr_NoMemory();
 415         } else {
 416                 ret = _PyUnicode_FromString(s);
 417                 free(s);
 418         }
 419         return ret;
 420 }
 421
 422 #ifdef HAVE_LIBTRACEEVENT
 423 static bool is_tracepoint(struct pyrf_event *pevent)
 424 {
 425         return pevent->evsel->core.attr.type == PERF_TYPE_TRACEPOINT;
 426 }
 427
 428 static PyObject*
 429 tracepoint_field(struct pyrf_event *pe, struct tep_format_field *field)
 430 {
 431         struct tep_handle *pevent = field->event->tep;
 432         void *data = pe->sample.raw_data;
 433         PyObject *ret = NULL;
 434         unsigned long long val;
 435         unsigned int offset, len;
 436
 437         if (field->flags & TEP_FIELD_IS_ARRAY) {
 438                 offset = field->offset;
 439                 len    = field->size;
 440                 if (field->flags & TEP_FIELD_IS_DYNAMIC) {
 441                         val     = tep_read_number(pevent, data + offset, len);
 442                         offset  = val;
 443                         len     = offset >> 16;
 444                         offset &= 0xffff;
 445 #ifdef HAVE_LIBTRACEEVENT_TEP_FIELD_IS_RELATIVE
 446                         if (field->flags & TEP_FIELD_IS_RELATIVE)
 447                                 offset += field->offset + field->size;
 448 #endif
 449                 }
 450                 if (field->flags & TEP_FIELD_IS_STRING &&
 451                     is_printable_array(data + offset, len)) {
 452                         ret = _PyUnicode_FromString((char *)data + offset);
 453                 } else {
 454                         ret = PyByteArray_FromStringAndSize((const char *) data + offset, len);
 455                         field->flags &= ~TEP_FIELD_IS_STRING;
 456                 }
 457         } else {
 458                 val = tep_read_number(pevent, data + field->offset,
 459                                       field->size);
 460                 if (field->flags & TEP_FIELD_IS_POINTER)
 461                         ret = PyLong_FromUnsignedLong((unsigned long) val);
 462                 else if (field->flags & TEP_FIELD_IS_SIGNED)
 463                         ret = PyLong_FromLong((long) val);
 464                 else
 465                         ret = PyLong_FromUnsignedLong((unsigned long) val);
 466         }
 467
 468         return ret;
 469 }
 470
 471 static PyObject*
 472 get_tracepoint_field(struct pyrf_event *pevent, PyObject *attr_name)
 473 {
 474         const char *str = _PyUnicode_AsString(PyObject_Str(attr_name));
 475         struct evsel *evsel = pevent->evsel;
 476         struct tep_format_field *field;
 477
 478         if (!evsel->tp_format) {
 479                 struct tep_event *tp_format;
 480
 481                 tp_format = trace_event__tp_format_id(evsel->core.attr.config);
 482                 if (IS_ERR_OR_NULL(tp_format))
 483                         return NULL;
 484
 485                 evsel->tp_format = tp_format;
 486         }
 487
 488         field = tep_find_any_field(evsel->tp_format, str);
 489         if (!field)
 490                 return NULL;
 491
 492         return tracepoint_field(pevent, field);
 493 }
 494 #endif /* HAVE_LIBTRACEEVENT */
 495
 496 static PyObject*
 497 pyrf_sample_event__getattro(struct pyrf_event *pevent, PyObject *attr_name)
 498 {
 499         PyObject *obj = NULL;
 500
 501 #ifdef HAVE_LIBTRACEEVENT
 502         if (is_tracepoint(pevent))
 503                 obj = get_tracepoint_field(pevent, attr_name);
 504 #endif
 505
 506         return obj ?: PyObject_GenericGetAttr((PyObject *) pevent, attr_name);
 507 }
 508
 509 static PyTypeObject pyrf_sample_event__type = {
 510         PyVarObject_HEAD_INIT(NULL, 0)
 511         .tp_name        = "perf.sample_event",
 512         .tp_basicsize   = sizeof(struct pyrf_event),
 513         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 514         .tp_doc         = pyrf_sample_event__doc,
 515         .tp_members     = pyrf_sample_event__members,
 516         .tp_repr        = (reprfunc)pyrf_sample_event__repr,
 517         .tp_getattro    = (getattrofunc) pyrf_sample_event__getattro,
 518 };
 519
 520 static char pyrf_context_switch_event__doc[] = PyDoc_STR("perf context_switch event object.");
 521
 522 static PyMemberDef pyrf_context_switch_event__members[] = {
 523         sample_members
 524         member_def(perf_event_header, type, T_UINT, "event type"),
 525         member_def(perf_record_switch, next_prev_pid, T_UINT, "next/prev pid"),
 526         member_def(perf_record_switch, next_prev_tid, T_UINT, "next/prev tid"),
 527         { .name = NULL, },
 528 };
 529
 530 static PyObject *pyrf_context_switch_event__repr(struct pyrf_event *pevent)
 531 {
 532         PyObject *ret;
 533         char *s;
 534
 535         if (asprintf(&s, "{ type: context_switch, next_prev_pid: %u, next_prev_tid: %u, switch_out: %u }",
 536                      pevent->event.context_switch.next_prev_pid,
 537                      pevent->event.context_switch.next_prev_tid,
 538                      !!(pevent->event.header.misc & PERF_RECORD_MISC_SWITCH_OUT)) < 0) {
 539                 ret = PyErr_NoMemory();
 540         } else {
 541                 ret = _PyUnicode_FromString(s);
 542                 free(s);
 543         }
 544         return ret;
 545 }
 546
 547 static PyTypeObject pyrf_context_switch_event__type = {
 548         PyVarObject_HEAD_INIT(NULL, 0)
 549         .tp_name        = "perf.context_switch_event",
 550         .tp_basicsize   = sizeof(struct pyrf_event),
 551         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 552         .tp_doc         = pyrf_context_switch_event__doc,
 553         .tp_members     = pyrf_context_switch_event__members,
 554         .tp_repr        = (reprfunc)pyrf_context_switch_event__repr,
 555 };
 556
 557 static int pyrf_event__setup_types(void)
 558 {
 559         int err;
 560         pyrf_mmap_event__type.tp_new =
 561         pyrf_task_event__type.tp_new =
 562         pyrf_comm_event__type.tp_new =
 563         pyrf_lost_event__type.tp_new =
 564         pyrf_read_event__type.tp_new =
 565         pyrf_sample_event__type.tp_new =
 566         pyrf_context_switch_event__type.tp_new =
 567         pyrf_throttle_event__type.tp_new = PyType_GenericNew;
 568         err = PyType_Ready(&pyrf_mmap_event__type);
 569         if (err < 0)
 570                 goto out;
 571         err = PyType_Ready(&pyrf_lost_event__type);
 572         if (err < 0)
 573                 goto out;
 574         err = PyType_Ready(&pyrf_task_event__type);
 575         if (err < 0)
 576                 goto out;
 577         err = PyType_Ready(&pyrf_comm_event__type);
 578         if (err < 0)
 579                 goto out;
 580         err = PyType_Ready(&pyrf_throttle_event__type);
 581         if (err < 0)
 582                 goto out;
 583         err = PyType_Ready(&pyrf_read_event__type);
 584         if (err < 0)
 585                 goto out;
 586         err = PyType_Ready(&pyrf_sample_event__type);
 587         if (err < 0)
 588                 goto out;
 589         err = PyType_Ready(&pyrf_context_switch_event__type);
 590         if (err < 0)
 591                 goto out;
 592 out:
 593         return err;
 594 }
 595
 596 static PyTypeObject *pyrf_event__type[] = {
 597         [PERF_RECORD_MMAP]       = &pyrf_mmap_event__type,
 598         [PERF_RECORD_LOST]       = &pyrf_lost_event__type,
 599         [PERF_RECORD_COMM]       = &pyrf_comm_event__type,
 600         [PERF_RECORD_EXIT]       = &pyrf_task_event__type,
 601         [PERF_RECORD_THROTTLE]   = &pyrf_throttle_event__type,
 602         [PERF_RECORD_UNTHROTTLE] = &pyrf_throttle_event__type,
 603         [PERF_RECORD_FORK]       = &pyrf_task_event__type,
 604         [PERF_RECORD_READ]       = &pyrf_read_event__type,
 605         [PERF_RECORD_SAMPLE]     = &pyrf_sample_event__type,
 606         [PERF_RECORD_SWITCH]     = &pyrf_context_switch_event__type,
 607         [PERF_RECORD_SWITCH_CPU_WIDE]  = &pyrf_context_switch_event__type,
 608 };
 609
 610 static PyObject *pyrf_event__new(union perf_event *event)
 611 {
 612         struct pyrf_event *pevent;
 613         PyTypeObject *ptype;
 614
 615         if ((event->header.type < PERF_RECORD_MMAP ||
 616              event->header.type > PERF_RECORD_SAMPLE) &&
 617             !(event->header.type == PERF_RECORD_SWITCH ||
 618               event->header.type == PERF_RECORD_SWITCH_CPU_WIDE))
 619                 return NULL;
 620
 621         ptype = pyrf_event__type[event->header.type];
 622         pevent = PyObject_New(struct pyrf_event, ptype);
 623         if (pevent != NULL)
 624                 memcpy(&pevent->event, event, event->header.size);
 625         return (PyObject *)pevent;
 626 }
 627
 628 struct pyrf_cpu_map {
 629         PyObject_HEAD
 630
 631         struct perf_cpu_map *cpus;
 632 };
 633
 634 static int pyrf_cpu_map__init(struct pyrf_cpu_map *pcpus,
 635                               PyObject *args, PyObject *kwargs)
 636 {
 637         static char *kwlist[] = { "cpustr", NULL };
 638         char *cpustr = NULL;
 639
 640         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|s",
 641                                          kwlist, &cpustr))
 642                 return -1;
 643
 644         pcpus->cpus = perf_cpu_map__new(cpustr);
 645         if (pcpus->cpus == NULL)
 646                 return -1;
 647         return 0;
 648 }
 649
 650 static void pyrf_cpu_map__delete(struct pyrf_cpu_map *pcpus)
 651 {
 652         perf_cpu_map__put(pcpus->cpus);
 653         Py_TYPE(pcpus)->tp_free((PyObject*)pcpus);
 654 }
 655
 656 static Py_ssize_t pyrf_cpu_map__length(PyObject *obj)
 657 {
 658         struct pyrf_cpu_map *pcpus = (void *)obj;
 659
 660         return perf_cpu_map__nr(pcpus->cpus);
 661 }
 662
 663 static PyObject *pyrf_cpu_map__item(PyObject *obj, Py_ssize_t i)
 664 {
 665         struct pyrf_cpu_map *pcpus = (void *)obj;
 666
 667         if (i >= perf_cpu_map__nr(pcpus->cpus))
 668                 return NULL;
 669
 670         return Py_BuildValue("i", perf_cpu_map__cpu(pcpus->cpus, i).cpu);
 671 }
 672
 673 static PySequenceMethods pyrf_cpu_map__sequence_methods = {
 674         .sq_length = pyrf_cpu_map__length,
 675         .sq_item   = pyrf_cpu_map__item,
 676 };
 677
 678 static char pyrf_cpu_map__doc[] = PyDoc_STR("cpu map object.");
 679
 680 static PyTypeObject pyrf_cpu_map__type = {
 681         PyVarObject_HEAD_INIT(NULL, 0)
 682         .tp_name        = "perf.cpu_map",
 683         .tp_basicsize   = sizeof(struct pyrf_cpu_map),
 684         .tp_dealloc     = (destructor)pyrf_cpu_map__delete,
 685         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 686         .tp_doc         = pyrf_cpu_map__doc,
 687         .tp_as_sequence = &pyrf_cpu_map__sequence_methods,
 688         .tp_init        = (initproc)pyrf_cpu_map__init,
 689 };
 690
 691 static int pyrf_cpu_map__setup_types(void)
 692 {
 693         pyrf_cpu_map__type.tp_new = PyType_GenericNew;
 694         return PyType_Ready(&pyrf_cpu_map__type);
 695 }
 696
 697 struct pyrf_thread_map {
 698         PyObject_HEAD
 699
 700         struct perf_thread_map *threads;
 701 };
 702
 703 static int pyrf_thread_map__init(struct pyrf_thread_map *pthreads,
 704                                  PyObject *args, PyObject *kwargs)
 705 {
 706         static char *kwlist[] = { "pid", "tid", "uid", NULL };
 707         int pid = -1, tid = -1, uid = UINT_MAX;
 708
 709         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|iii",
 710                                          kwlist, &pid, &tid, &uid))
 711                 return -1;
 712
 713         pthreads->threads = thread_map__new(pid, tid, uid);
 714         if (pthreads->threads == NULL)
 715                 return -1;
 716         return 0;
 717 }
 718
 719 static void pyrf_thread_map__delete(struct pyrf_thread_map *pthreads)
 720 {
 721         perf_thread_map__put(pthreads->threads);
 722         Py_TYPE(pthreads)->tp_free((PyObject*)pthreads);
 723 }
 724
 725 static Py_ssize_t pyrf_thread_map__length(PyObject *obj)
 726 {
 727         struct pyrf_thread_map *pthreads = (void *)obj;
 728
 729         return perf_thread_map__nr(pthreads->threads);
 730 }
 731
 732 static PyObject *pyrf_thread_map__item(PyObject *obj, Py_ssize_t i)
 733 {
 734         struct pyrf_thread_map *pthreads = (void *)obj;
 735
 736         if (i >= perf_thread_map__nr(pthreads->threads))
 737                 return NULL;
 738
 739         return Py_BuildValue("i", perf_thread_map__pid(pthreads->threads, i));
 740 }
 741
 742 static PySequenceMethods pyrf_thread_map__sequence_methods = {
 743         .sq_length = pyrf_thread_map__length,
 744         .sq_item   = pyrf_thread_map__item,
 745 };
 746
 747 static char pyrf_thread_map__doc[] = PyDoc_STR("thread map object.");
 748
 749 static PyTypeObject pyrf_thread_map__type = {
 750         PyVarObject_HEAD_INIT(NULL, 0)
 751         .tp_name        = "perf.thread_map",
 752         .tp_basicsize   = sizeof(struct pyrf_thread_map),
 753         .tp_dealloc     = (destructor)pyrf_thread_map__delete,
 754         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 755         .tp_doc         = pyrf_thread_map__doc,
 756         .tp_as_sequence = &pyrf_thread_map__sequence_methods,
 757         .tp_init        = (initproc)pyrf_thread_map__init,
 758 };
 759
 760 static int pyrf_thread_map__setup_types(void)
 761 {
 762         pyrf_thread_map__type.tp_new = PyType_GenericNew;
 763         return PyType_Ready(&pyrf_thread_map__type);
 764 }
 765
 766 struct pyrf_evsel {
 767         PyObject_HEAD
 768
 769         struct evsel evsel;
 770 };
 771
 772 static int pyrf_evsel__init(struct pyrf_evsel *pevsel,
 773                             PyObject *args, PyObject *kwargs)
 774 {
 775         struct perf_event_attr attr = {
 776                 .type = PERF_TYPE_HARDWARE,
 777                 .config = PERF_COUNT_HW_CPU_CYCLES,
 778                 .sample_type = PERF_SAMPLE_PERIOD | PERF_SAMPLE_TID,
 779         };
 780         static char *kwlist[] = {
 781                 "type",
 782                 "config",
 783                 "sample_freq",
 784                 "sample_period",
 785                 "sample_type",
 786                 "read_format",
 787                 "disabled",
 788                 "inherit",
 789                 "pinned",
 790                 "exclusive",
 791                 "exclude_user",
 792                 "exclude_kernel",
 793                 "exclude_hv",
 794                 "exclude_idle",
 795                 "mmap",
 796                 "context_switch",
 797                 "comm",
 798                 "freq",
 799                 "inherit_stat",
 800                 "enable_on_exec",
 801                 "task",
 802                 "watermark",
 803                 "precise_ip",
 804                 "mmap_data",
 805                 "sample_id_all",
 806                 "wakeup_events",
 807                 "bp_type",
 808                 "bp_addr",
 809                 "bp_len",
 810                  NULL
 811         };
 812         u64 sample_period = 0;
 813         u32 disabled = 0,
 814             inherit = 0,
 815             pinned = 0,
 816             exclusive = 0,
 817             exclude_user = 0,
 818             exclude_kernel = 0,
 819             exclude_hv = 0,
 820             exclude_idle = 0,
 821             mmap = 0,
 822             context_switch = 0,
 823             comm = 0,
 824             freq = 1,
 825             inherit_stat = 0,
 826             enable_on_exec = 0,
 827             task = 0,
 828             watermark = 0,
 829             precise_ip = 0,
 830             mmap_data = 0,
 831             sample_id_all = 1;
 832         int idx = 0;
 833
 834         if (!PyArg_ParseTupleAndKeywords(args, kwargs,
 835                                          "|iKiKKiiiiiiiiiiiiiiiiiiiiiiKK", kwlist,
 836                                          &attr.type, &attr.config, &attr.sample_freq,
 837                                          &sample_period, &attr.sample_type,
 838                                          &attr.read_format, &disabled, &inherit,
 839                                          &pinned, &exclusive, &exclude_user,
 840                                          &exclude_kernel, &exclude_hv, &exclude_idle,
 841                                          &mmap, &context_switch, &comm, &freq, &inherit_stat,
 842                                          &enable_on_exec, &task, &watermark,
 843                                          &precise_ip, &mmap_data, &sample_id_all,
 844                                          &attr.wakeup_events, &attr.bp_type,
 845                                          &attr.bp_addr, &attr.bp_len, &idx))
 846                 return -1;
 847
 848         /* union... */
 849         if (sample_period != 0) {
 850                 if (attr.sample_freq != 0)
 851                         return -1; /* FIXME: throw right exception */
 852                 attr.sample_period = sample_period;
 853         }
 854
 855         /* Bitfields */
 856         attr.disabled       = disabled;
 857         attr.inherit        = inherit;
 858         attr.pinned         = pinned;
 859         attr.exclusive      = exclusive;
 860         attr.exclude_user   = exclude_user;
 861         attr.exclude_kernel = exclude_kernel;
 862         attr.exclude_hv     = exclude_hv;
 863         attr.exclude_idle   = exclude_idle;
 864         attr.mmap           = mmap;
 865         attr.context_switch = context_switch;
 866         attr.comm           = comm;
 867         attr.freq           = freq;
 868         attr.inherit_stat   = inherit_stat;
 869         attr.enable_on_exec = enable_on_exec;
 870         attr.task           = task;
 871         attr.watermark      = watermark;
 872         attr.precise_ip     = precise_ip;
 873         attr.mmap_data      = mmap_data;
 874         attr.sample_id_all  = sample_id_all;
 875         attr.size           = sizeof(attr);
 876
 877         evsel__init(&pevsel->evsel, &attr, idx);
 878         return 0;
 879 }
 880
 881 static void pyrf_evsel__delete(struct pyrf_evsel *pevsel)
 882 {
 883         evsel__exit(&pevsel->evsel);
 884         Py_TYPE(pevsel)->tp_free((PyObject*)pevsel);
 885 }
 886
 887 static PyObject *pyrf_evsel__open(struct pyrf_evsel *pevsel,
 888                                   PyObject *args, PyObject *kwargs)
 889 {
 890         struct evsel *evsel = &pevsel->evsel;
 891         struct perf_cpu_map *cpus = NULL;
 892         struct perf_thread_map *threads = NULL;
 893         PyObject *pcpus = NULL, *pthreads = NULL;
 894         int group = 0, inherit = 0;
 895         static char *kwlist[] = { "cpus", "threads", "group", "inherit", NULL };
 896
 897         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|OOii", kwlist,
 898                                          &pcpus, &pthreads, &group, &inherit))
 899                 return NULL;
 900
 901         if (pthreads != NULL)
 902                 threads = ((struct pyrf_thread_map *)pthreads)->threads;
 903
 904         if (pcpus != NULL)
 905                 cpus = ((struct pyrf_cpu_map *)pcpus)->cpus;
 906
 907         evsel->core.attr.inherit = inherit;
 908         /*
 909          * This will group just the fds for this single evsel, to group
 910          * multiple events, use evlist.open().
 911          */
 912         if (evsel__open(evsel, cpus, threads) < 0) {
 913                 PyErr_SetFromErrno(PyExc_OSError);
 914                 return NULL;
 915         }
 916
 917         Py_INCREF(Py_None);
 918         return Py_None;
 919 }
 920
 921 static PyMethodDef pyrf_evsel__methods[] = {
 922         {
 923                 .ml_name  = "open",
 924                 .ml_meth  = (PyCFunction)pyrf_evsel__open,
 925                 .ml_flags = METH_VARARGS | METH_KEYWORDS,
 926                 .ml_doc   = PyDoc_STR("open the event selector file descriptor table.")
 927         },
 928         { .ml_name = NULL, }
 929 };
 930
 931 static char pyrf_evsel__doc[] = PyDoc_STR("perf event selector list object.");
 932
 933 static PyTypeObject pyrf_evsel__type = {
 934         PyVarObject_HEAD_INIT(NULL, 0)
 935         .tp_name        = "perf.evsel",
 936         .tp_basicsize   = sizeof(struct pyrf_evsel),
 937         .tp_dealloc     = (destructor)pyrf_evsel__delete,
 938         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 939         .tp_doc         = pyrf_evsel__doc,
 940         .tp_methods     = pyrf_evsel__methods,
 941         .tp_init        = (initproc)pyrf_evsel__init,
 942 };
 943
 944 static int pyrf_evsel__setup_types(void)
 945 {
 946         pyrf_evsel__type.tp_new = PyType_GenericNew;
 947         return PyType_Ready(&pyrf_evsel__type);
 948 }
 949
 950 struct pyrf_evlist {
 951         PyObject_HEAD
 952
 953         struct evlist evlist;
 954 };
 955
 956 static int pyrf_evlist__init(struct pyrf_evlist *pevlist,
 957                              PyObject *args, PyObject *kwargs __maybe_unused)
 958 {
 959         PyObject *pcpus = NULL, *pthreads = NULL;
 960         struct perf_cpu_map *cpus;
 961         struct perf_thread_map *threads;
 962
 963         if (!PyArg_ParseTuple(args, "OO", &pcpus, &pthreads))
 964                 return -1;
 965
 966         threads = ((struct pyrf_thread_map *)pthreads)->threads;
 967         cpus = ((struct pyrf_cpu_map *)pcpus)->cpus;
 968         evlist__init(&pevlist->evlist, cpus, threads);
 969         return 0;
 970 }
 971
 972 static void pyrf_evlist__delete(struct pyrf_evlist *pevlist)
 973 {
 974         evlist__exit(&pevlist->evlist);
 975         Py_TYPE(pevlist)->tp_free((PyObject*)pevlist);
 976 }
 977
 978 static PyObject *pyrf_evlist__mmap(struct pyrf_evlist *pevlist,
 979                                    PyObject *args, PyObject *kwargs)
 980 {
 981         struct evlist *evlist = &pevlist->evlist;
 982         static char *kwlist[] = { "pages", "overwrite", NULL };
 983         int pages = 128, overwrite = false;
 984
 985         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|ii", kwlist,
 986                                          &pages, &overwrite))
 987                 return NULL;
 988
 989         if (evlist__mmap(evlist, pages) < 0) {
 990                 PyErr_SetFromErrno(PyExc_OSError);
 991                 return NULL;
 992         }
 993
 994         Py_INCREF(Py_None);
 995         return Py_None;
 996 }
 997
 998 static PyObject *pyrf_evlist__poll(struct pyrf_evlist *pevlist,
 999                                    PyObject *args, PyObject *kwargs)
1000 {
1001         struct evlist *evlist = &pevlist->evlist;
1002         static char *kwlist[] = { "timeout", NULL };
1003         int timeout = -1, n;
1004
1005         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|i", kwlist, &timeout))
1006                 return NULL;
1007
1008         n = evlist__poll(evlist, timeout);
1009         if (n < 0) {
1010                 PyErr_SetFromErrno(PyExc_OSError);
1011                 return NULL;
1012         }
1013
1014         return Py_BuildValue("i", n);
1015 }
1016
1017 static PyObject *pyrf_evlist__get_pollfd(struct pyrf_evlist *pevlist,
1018                                          PyObject *args __maybe_unused,
1019                                          PyObject *kwargs __maybe_unused)
1020 {
1021         struct evlist *evlist = &pevlist->evlist;
1022         PyObject *list = PyList_New(0);
1023         int i;
1024
1025         for (i = 0; i < evlist->core.pollfd.nr; ++i) {
1026                 PyObject *file;
1027 #if PY_MAJOR_VERSION < 3
1028                 FILE *fp = fdopen(evlist->core.pollfd.entries[i].fd, "r");
1029
1030                 if (fp == NULL)
1031                         goto free_list;
1032
1033                 file = PyFile_FromFile(fp, "perf", "r", NULL);
1034 #else
1035                 file = PyFile_FromFd(evlist->core.pollfd.entries[i].fd, "perf", "r", -1,
1036                                      NULL, NULL, NULL, 0);
1037 #endif
1038                 if (file == NULL)
1039                         goto free_list;
1040
1041                 if (PyList_Append(list, file) != 0) {
1042                         Py_DECREF(file);
1043                         goto free_list;
1044                 }
1045
1046                 Py_DECREF(file);
1047         }
1048
1049         return list;
1050 free_list:
1051         return PyErr_NoMemory();
1052 }
1053
1054
1055 static PyObject *pyrf_evlist__add(struct pyrf_evlist *pevlist,
1056                                   PyObject *args,
1057                                   PyObject *kwargs __maybe_unused)
1058 {
1059         struct evlist *evlist = &pevlist->evlist;
1060         PyObject *pevsel;
1061         struct evsel *evsel;
1062
1063         if (!PyArg_ParseTuple(args, "O", &pevsel))
1064                 return NULL;
1065
1066         Py_INCREF(pevsel);
1067         evsel = &((struct pyrf_evsel *)pevsel)->evsel;
1068         evsel->core.idx = evlist->core.nr_entries;
1069         evlist__add(evlist, evsel);
1070
1071         return Py_BuildValue("i", evlist->core.nr_entries);
1072 }
1073
1074 static struct mmap *get_md(struct evlist *evlist, int cpu)
1075 {
1076         int i;
1077
1078         for (i = 0; i < evlist->core.nr_mmaps; i++) {
1079                 struct mmap *md = &evlist->mmap[i];
1080
1081                 if (md->core.cpu.cpu == cpu)
1082                         return md;
1083         }
1084
1085         return NULL;
1086 }
1087
1088 static PyObject *pyrf_evlist__read_on_cpu(struct pyrf_evlist *pevlist,
1089                                           PyObject *args, PyObject *kwargs)
1090 {
1091         struct evlist *evlist = &pevlist->evlist;
1092         union perf_event *event;
1093         int sample_id_all = 1, cpu;
1094         static char *kwlist[] = { "cpu", "sample_id_all", NULL };
1095         struct mmap *md;
1096         int err;
1097
1098         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "i|i", kwlist,
1099                                          &cpu, &sample_id_all))
1100                 return NULL;
1101
1102         md = get_md(evlist, cpu);
1103         if (!md)
1104                 return NULL;
1105
1106         if (perf_mmap__read_init(&md->core) < 0)
1107                 goto end;
1108
1109         event = perf_mmap__read_event(&md->core);
1110         if (event != NULL) {
1111                 PyObject *pyevent = pyrf_event__new(event);
1112                 struct pyrf_event *pevent = (struct pyrf_event *)pyevent;
1113                 struct evsel *evsel;
1114
1115                 if (pyevent == NULL)
1116                         return PyErr_NoMemory();
1117
1118                 evsel = evlist__event2evsel(evlist, event);
1119                 if (!evsel) {
1120                         Py_INCREF(Py_None);
1121                         return Py_None;
1122                 }
1123
1124                 pevent->evsel = evsel;
1125
1126                 err = evsel__parse_sample(evsel, event, &pevent->sample);
1127
1128                 /* Consume the even only after we parsed it out. */
1129                 perf_mmap__consume(&md->core);
1130
1131                 if (err)
1132                         return PyErr_Format(PyExc_OSError,
1133                                             "perf: can't parse sample, err=%d", err);
1134                 return pyevent;
1135         }
1136 end:
1137         Py_INCREF(Py_None);
1138         return Py_None;
1139 }
1140
1141 static PyObject *pyrf_evlist__open(struct pyrf_evlist *pevlist,
1142                                    PyObject *args, PyObject *kwargs)
1143 {
1144         struct evlist *evlist = &pevlist->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 #ifndef HAVE_LIBTRACEEVENT
1330         return NULL;
1331 #else
1332         struct tep_event *tp_format;
1333         static char *kwlist[] = { "sys", "name", NULL };
1334         char *sys  = NULL;
1335         char *name = NULL;
1336
1337         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|ss", kwlist,
1338                                          &sys, &name))
1339                 return NULL;
1340
1341         tp_format = trace_event__tp_format(sys, name);
1342         if (IS_ERR(tp_format))
1343                 return _PyLong_FromLong(-1);
1344
1345         return _PyLong_FromLong(tp_format->id);
1346 #endif // HAVE_LIBTRACEEVENT
1347 }
1348
1349 static PyMethodDef perf__methods[] = {
1350         {
1351                 .ml_name  = "tracepoint",
1352                 .ml_meth  = (PyCFunction) pyrf__tracepoint,
1353                 .ml_flags = METH_VARARGS | METH_KEYWORDS,
1354                 .ml_doc   = PyDoc_STR("Get tracepoint config.")
1355         },
1356         { .ml_name = NULL, }
1357 };
1358
1359 #if PY_MAJOR_VERSION < 3
1360 PyMODINIT_FUNC initperf(void)
1361 #else
1362 PyMODINIT_FUNC PyInit_perf(void)
1363 #endif
1364 {
1365         PyObject *obj;
1366         int i;
1367         PyObject *dict;
1368 #if PY_MAJOR_VERSION < 3
1369         PyObject *module = Py_InitModule("perf", perf__methods);
1370 #else
1371         static struct PyModuleDef moduledef = {
1372                 PyModuleDef_HEAD_INIT,
1373                 "perf",                 /* m_name */
1374                 "",                     /* m_doc */
1375                 -1,                     /* m_size */
1376                 perf__methods,          /* m_methods */
1377                 NULL,                   /* m_reload */
1378                 NULL,                   /* m_traverse */
1379                 NULL,                   /* m_clear */
1380                 NULL,                   /* m_free */
1381         };
1382         PyObject *module = PyModule_Create(&moduledef);
1383 #endif
1384
1385         if (module == NULL ||
1386             pyrf_event__setup_types() < 0 ||
1387             pyrf_evlist__setup_types() < 0 ||
1388             pyrf_evsel__setup_types() < 0 ||
1389             pyrf_thread_map__setup_types() < 0 ||
1390             pyrf_cpu_map__setup_types() < 0)
1391 #if PY_MAJOR_VERSION < 3
1392                 return;
1393 #else
1394                 return module;
1395 #endif
1396
1397         /* The page_size is placed in util object. */
1398         page_size = sysconf(_SC_PAGE_SIZE);
1399
1400         Py_INCREF(&pyrf_evlist__type);
1401         PyModule_AddObject(module, "evlist", (PyObject*)&pyrf_evlist__type);
1402
1403         Py_INCREF(&pyrf_evsel__type);
1404         PyModule_AddObject(module, "evsel", (PyObject*)&pyrf_evsel__type);
1405
1406         Py_INCREF(&pyrf_mmap_event__type);
1407         PyModule_AddObject(module, "mmap_event", (PyObject *)&pyrf_mmap_event__type);
1408
1409         Py_INCREF(&pyrf_lost_event__type);
1410         PyModule_AddObject(module, "lost_event", (PyObject *)&pyrf_lost_event__type);
1411
1412         Py_INCREF(&pyrf_comm_event__type);
1413         PyModule_AddObject(module, "comm_event", (PyObject *)&pyrf_comm_event__type);
1414
1415         Py_INCREF(&pyrf_task_event__type);
1416         PyModule_AddObject(module, "task_event", (PyObject *)&pyrf_task_event__type);
1417
1418         Py_INCREF(&pyrf_throttle_event__type);
1419         PyModule_AddObject(module, "throttle_event", (PyObject *)&pyrf_throttle_event__type);
1420
1421         Py_INCREF(&pyrf_task_event__type);
1422         PyModule_AddObject(module, "task_event", (PyObject *)&pyrf_task_event__type);
1423
1424         Py_INCREF(&pyrf_read_event__type);
1425         PyModule_AddObject(module, "read_event", (PyObject *)&pyrf_read_event__type);
1426
1427         Py_INCREF(&pyrf_sample_event__type);
1428         PyModule_AddObject(module, "sample_event", (PyObject *)&pyrf_sample_event__type);
1429
1430         Py_INCREF(&pyrf_context_switch_event__type);
1431         PyModule_AddObject(module, "switch_event", (PyObject *)&pyrf_context_switch_event__type);
1432
1433         Py_INCREF(&pyrf_thread_map__type);
1434         PyModule_AddObject(module, "thread_map", (PyObject*)&pyrf_thread_map__type);
1435
1436         Py_INCREF(&pyrf_cpu_map__type);
1437         PyModule_AddObject(module, "cpu_map", (PyObject*)&pyrf_cpu_map__type);
1438
1439         dict = PyModule_GetDict(module);
1440         if (dict == NULL)
1441                 goto error;
1442
1443         for (i = 0; perf__constants[i].name != NULL; i++) {
1444                 obj = _PyLong_FromLong(perf__constants[i].value);
1445                 if (obj == NULL)
1446                         goto error;
1447                 PyDict_SetItemString(dict, perf__constants[i].name, obj);
1448                 Py_DECREF(obj);
1449         }
1450
1451 error:
1452         if (PyErr_Occurred())
1453                 PyErr_SetString(PyExc_ImportError, "perf: Init failed!");
1454 #if PY_MAJOR_VERSION >= 3
1455         return module;
1456 #endif
1457 }
1458
1459 /*
1460  * Dummy, to avoid dragging all the test_attr infrastructure in the python
1461  * binding.
1462  */
1463 void test_attr__open(struct perf_event_attr *attr, pid_t pid, struct perf_cpu cpu,
1464                      int fd, int group_fd, unsigned long flags)
1465 {
1466 }