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/bpf-filter.h"
  23 #include "util/env.h"
  24 #include "util/pmu.h"
  25 #include "util/pmus.h"
  26 #include <internal/lib.h>
  27 #include "util.h"
  28
  29 #if PY_MAJOR_VERSION < 3
  30 #define _PyUnicode_FromString(arg) \
  31   PyString_FromString(arg)
  32 #define _PyUnicode_AsString(arg) \
  33   PyString_AsString(arg)
  34 #define _PyUnicode_FromFormat(...) \
  35   PyString_FromFormat(__VA_ARGS__)
  36 #define _PyLong_FromLong(arg) \
  37   PyInt_FromLong(arg)
  38
  39 #else
  40
  41 #define _PyUnicode_FromString(arg) \
  42   PyUnicode_FromString(arg)
  43 #define _PyUnicode_FromFormat(...) \
  44   PyUnicode_FromFormat(__VA_ARGS__)
  45 #define _PyLong_FromLong(arg) \
  46   PyLong_FromLong(arg)
  47 #endif
  48
  49 #ifndef Py_TYPE
  50 #define Py_TYPE(ob) (((PyObject*)(ob))->ob_type)
  51 #endif
  52
  53 /*
  54  * Avoid bringing in event parsing.
  55  */
  56 int parse_event(struct evlist *evlist __maybe_unused, const char *str __maybe_unused)
  57 {
  58         return 0;
  59 }
  60
  61 /*
  62  * Provide these two so that we don't have to link against callchain.c and
  63  * start dragging hist.c, etc.
  64  */
  65 struct callchain_param callchain_param;
  66
  67 int parse_callchain_record(const char *arg __maybe_unused,
  68                            struct callchain_param *param __maybe_unused)
  69 {
  70         return 0;
  71 }
  72
  73 /*
  74  * Add these not to drag util/env.c
  75  */
  76 struct perf_env perf_env;
  77
  78 const char *perf_env__cpuid(struct perf_env *env __maybe_unused)
  79 {
  80         return NULL;
  81 }
  82
  83 // This one is a bit easier, wouldn't drag too much, but leave it as a stub we need it here
  84 const char *perf_env__arch(struct perf_env *env __maybe_unused)
  85 {
  86         return NULL;
  87 }
  88
  89 /*
  90  * These ones are needed not to drag the PMU bandwagon, jevents generated
  91  * pmu_sys_event_tables, etc and evsel__find_pmu() is used so far just for
  92  * doing per PMU perf_event_attr.exclude_guest handling, not really needed, so
  93  * far, for the perf python binding known usecases, revisit if this become
  94  * necessary.
  95  */
  96 struct perf_pmu *evsel__find_pmu(const struct evsel *evsel __maybe_unused)
  97 {
  98         return NULL;
  99 }
 100
 101 int perf_pmu__scan_file(struct perf_pmu *pmu, const char *name, const char *fmt, ...)
 102 {
 103         return EOF;
 104 }
 105
 106 int perf_pmus__num_core_pmus(void)
 107 {
 108         return 1;
 109 }
 110
 111 bool evsel__is_aux_event(const struct evsel *evsel __maybe_unused)
 112 {
 113         return false;
 114 }
 115
 116 bool perf_pmus__supports_extended_type(void)
 117 {
 118         return false;
 119 }
 120
 121 /*
 122  * Add this one here not to drag util/metricgroup.c
 123  */
 124 int metricgroup__copy_metric_events(struct evlist *evlist, struct cgroup *cgrp,
 125                                     struct rblist *new_metric_events,
 126                                     struct rblist *old_metric_events)
 127 {
 128         return 0;
 129 }
 130
 131 /*
 132  * Add this one here not to drag util/trace-event-info.c
 133  */
 134 char *tracepoint_id_to_name(u64 config)
 135 {
 136         return NULL;
 137 }
 138
 139 /*
 140  * XXX: All these evsel destructors need some better mechanism, like a linked
 141  * list of destructors registered when the relevant code indeed is used instead
 142  * of having more and more calls in perf_evsel__delete(). -- acme
 143  *
 144  * For now, add some more:
 145  *
 146  * Not to drag the BPF bandwagon...
 147  */
 148 void bpf_counter__destroy(struct evsel *evsel);
 149 int bpf_counter__install_pe(struct evsel *evsel, int cpu, int fd);
 150 int bpf_counter__disable(struct evsel *evsel);
 151
 152 void bpf_counter__destroy(struct evsel *evsel __maybe_unused)
 153 {
 154 }
 155
 156 int bpf_counter__install_pe(struct evsel *evsel __maybe_unused, int cpu __maybe_unused, int fd __maybe_unused)
 157 {
 158         return 0;
 159 }
 160
 161 int bpf_counter__disable(struct evsel *evsel __maybe_unused)
 162 {
 163         return 0;
 164 }
 165
 166 // not to drag util/bpf-filter.c
 167 #ifdef HAVE_BPF_SKEL
 168 int perf_bpf_filter__prepare(struct evsel *evsel __maybe_unused)
 169 {
 170         return 0;
 171 }
 172
 173 int perf_bpf_filter__destroy(struct evsel *evsel __maybe_unused)
 174 {
 175         return 0;
 176 }
 177 #endif
 178
 179 /*
 180  * Support debug printing even though util/debug.c is not linked.  That means
 181  * implementing 'verbose' and 'eprintf'.
 182  */
 183 int verbose;
 184 int debug_peo_args;
 185
 186 int eprintf(int level, int var, const char *fmt, ...);
 187
 188 int eprintf(int level, int var, const char *fmt, ...)
 189 {
 190         va_list args;
 191         int ret = 0;
 192
 193         if (var >= level) {
 194                 va_start(args, fmt);
 195                 ret = vfprintf(stderr, fmt, args);
 196                 va_end(args);
 197         }
 198
 199         return ret;
 200 }
 201
 202 /* Define PyVarObject_HEAD_INIT for python 2.5 */
 203 #ifndef PyVarObject_HEAD_INIT
 204 # define PyVarObject_HEAD_INIT(type, size) PyObject_HEAD_INIT(type) size,
 205 #endif
 206
 207 #if PY_MAJOR_VERSION < 3
 208 PyMODINIT_FUNC initperf(void);
 209 #else
 210 PyMODINIT_FUNC PyInit_perf(void);
 211 #endif
 212
 213 #define member_def(type, member, ptype, help) \
 214         { #member, ptype, \
 215           offsetof(struct pyrf_event, event) + offsetof(struct type, member), \
 216           0, help }
 217
 218 #define sample_member_def(name, member, ptype, help) \
 219         { #name, ptype, \
 220           offsetof(struct pyrf_event, sample) + offsetof(struct perf_sample, member), \
 221           0, help }
 222
 223 struct pyrf_event {
 224         PyObject_HEAD
 225         struct evsel *evsel;
 226         struct perf_sample sample;
 227         union perf_event   event;
 228 };
 229
 230 #define sample_members \
 231         sample_member_def(sample_ip, ip, T_ULONGLONG, "event type"),                     \
 232         sample_member_def(sample_pid, pid, T_INT, "event pid"),                  \
 233         sample_member_def(sample_tid, tid, T_INT, "event tid"),                  \
 234         sample_member_def(sample_time, time, T_ULONGLONG, "event timestamp"),            \
 235         sample_member_def(sample_addr, addr, T_ULONGLONG, "event addr"),                 \
 236         sample_member_def(sample_id, id, T_ULONGLONG, "event id"),                       \
 237         sample_member_def(sample_stream_id, stream_id, T_ULONGLONG, "event stream id"), \
 238         sample_member_def(sample_period, period, T_ULONGLONG, "event period"),           \
 239         sample_member_def(sample_cpu, cpu, T_UINT, "event cpu"),
 240
 241 static char pyrf_mmap_event__doc[] = PyDoc_STR("perf mmap event object.");
 242
 243 static PyMemberDef pyrf_mmap_event__members[] = {
 244         sample_members
 245         member_def(perf_event_header, type, T_UINT, "event type"),
 246         member_def(perf_event_header, misc, T_UINT, "event misc"),
 247         member_def(perf_record_mmap, pid, T_UINT, "event pid"),
 248         member_def(perf_record_mmap, tid, T_UINT, "event tid"),
 249         member_def(perf_record_mmap, start, T_ULONGLONG, "start of the map"),
 250         member_def(perf_record_mmap, len, T_ULONGLONG, "map length"),
 251         member_def(perf_record_mmap, pgoff, T_ULONGLONG, "page offset"),
 252         member_def(perf_record_mmap, filename, T_STRING_INPLACE, "backing store"),
 253         { .name = NULL, },
 254 };
 255
 256 static PyObject *pyrf_mmap_event__repr(struct pyrf_event *pevent)
 257 {
 258         PyObject *ret;
 259         char *s;
 260
 261         if (asprintf(&s, "{ type: mmap, pid: %u, tid: %u, start: %#" PRI_lx64 ", "
 262                          "length: %#" PRI_lx64 ", offset: %#" PRI_lx64 ", "
 263                          "filename: %s }",
 264                      pevent->event.mmap.pid, pevent->event.mmap.tid,
 265                      pevent->event.mmap.start, pevent->event.mmap.len,
 266                      pevent->event.mmap.pgoff, pevent->event.mmap.filename) < 0) {
 267                 ret = PyErr_NoMemory();
 268         } else {
 269                 ret = _PyUnicode_FromString(s);
 270                 free(s);
 271         }
 272         return ret;
 273 }
 274
 275 static PyTypeObject pyrf_mmap_event__type = {
 276         PyVarObject_HEAD_INIT(NULL, 0)
 277         .tp_name        = "perf.mmap_event",
 278         .tp_basicsize   = sizeof(struct pyrf_event),
 279         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 280         .tp_doc         = pyrf_mmap_event__doc,
 281         .tp_members     = pyrf_mmap_event__members,
 282         .tp_repr        = (reprfunc)pyrf_mmap_event__repr,
 283 };
 284
 285 static char pyrf_task_event__doc[] = PyDoc_STR("perf task (fork/exit) event object.");
 286
 287 static PyMemberDef pyrf_task_event__members[] = {
 288         sample_members
 289         member_def(perf_event_header, type, T_UINT, "event type"),
 290         member_def(perf_record_fork, pid, T_UINT, "event pid"),
 291         member_def(perf_record_fork, ppid, T_UINT, "event ppid"),
 292         member_def(perf_record_fork, tid, T_UINT, "event tid"),
 293         member_def(perf_record_fork, ptid, T_UINT, "event ptid"),
 294         member_def(perf_record_fork, time, T_ULONGLONG, "timestamp"),
 295         { .name = NULL, },
 296 };
 297
 298 static PyObject *pyrf_task_event__repr(struct pyrf_event *pevent)
 299 {
 300         return _PyUnicode_FromFormat("{ type: %s, pid: %u, ppid: %u, tid: %u, "
 301                                    "ptid: %u, time: %" PRI_lu64 "}",
 302                                    pevent->event.header.type == PERF_RECORD_FORK ? "fork" : "exit",
 303                                    pevent->event.fork.pid,
 304                                    pevent->event.fork.ppid,
 305                                    pevent->event.fork.tid,
 306                                    pevent->event.fork.ptid,
 307                                    pevent->event.fork.time);
 308 }
 309
 310 static PyTypeObject pyrf_task_event__type = {
 311         PyVarObject_HEAD_INIT(NULL, 0)
 312         .tp_name        = "perf.task_event",
 313         .tp_basicsize   = sizeof(struct pyrf_event),
 314         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 315         .tp_doc         = pyrf_task_event__doc,
 316         .tp_members     = pyrf_task_event__members,
 317         .tp_repr        = (reprfunc)pyrf_task_event__repr,
 318 };
 319
 320 static char pyrf_comm_event__doc[] = PyDoc_STR("perf comm event object.");
 321
 322 static PyMemberDef pyrf_comm_event__members[] = {
 323         sample_members
 324         member_def(perf_event_header, type, T_UINT, "event type"),
 325         member_def(perf_record_comm, pid, T_UINT, "event pid"),
 326         member_def(perf_record_comm, tid, T_UINT, "event tid"),
 327         member_def(perf_record_comm, comm, T_STRING_INPLACE, "process name"),
 328         { .name = NULL, },
 329 };
 330
 331 static PyObject *pyrf_comm_event__repr(struct pyrf_event *pevent)
 332 {
 333         return _PyUnicode_FromFormat("{ type: comm, pid: %u, tid: %u, comm: %s }",
 334                                    pevent->event.comm.pid,
 335                                    pevent->event.comm.tid,
 336                                    pevent->event.comm.comm);
 337 }
 338
 339 static PyTypeObject pyrf_comm_event__type = {
 340         PyVarObject_HEAD_INIT(NULL, 0)
 341         .tp_name        = "perf.comm_event",
 342         .tp_basicsize   = sizeof(struct pyrf_event),
 343         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 344         .tp_doc         = pyrf_comm_event__doc,
 345         .tp_members     = pyrf_comm_event__members,
 346         .tp_repr        = (reprfunc)pyrf_comm_event__repr,
 347 };
 348
 349 static char pyrf_throttle_event__doc[] = PyDoc_STR("perf throttle event object.");
 350
 351 static PyMemberDef pyrf_throttle_event__members[] = {
 352         sample_members
 353         member_def(perf_event_header, type, T_UINT, "event type"),
 354         member_def(perf_record_throttle, time, T_ULONGLONG, "timestamp"),
 355         member_def(perf_record_throttle, id, T_ULONGLONG, "event id"),
 356         member_def(perf_record_throttle, stream_id, T_ULONGLONG, "event stream id"),
 357         { .name = NULL, },
 358 };
 359
 360 static PyObject *pyrf_throttle_event__repr(struct pyrf_event *pevent)
 361 {
 362         struct perf_record_throttle *te = (struct perf_record_throttle *)(&pevent->event.header + 1);
 363
 364         return _PyUnicode_FromFormat("{ type: %sthrottle, time: %" PRI_lu64 ", id: %" PRI_lu64
 365                                    ", stream_id: %" PRI_lu64 " }",
 366                                    pevent->event.header.type == PERF_RECORD_THROTTLE ? "" : "un",
 367                                    te->time, te->id, te->stream_id);
 368 }
 369
 370 static PyTypeObject pyrf_throttle_event__type = {
 371         PyVarObject_HEAD_INIT(NULL, 0)
 372         .tp_name        = "perf.throttle_event",
 373         .tp_basicsize   = sizeof(struct pyrf_event),
 374         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 375         .tp_doc         = pyrf_throttle_event__doc,
 376         .tp_members     = pyrf_throttle_event__members,
 377         .tp_repr        = (reprfunc)pyrf_throttle_event__repr,
 378 };
 379
 380 static char pyrf_lost_event__doc[] = PyDoc_STR("perf lost event object.");
 381
 382 static PyMemberDef pyrf_lost_event__members[] = {
 383         sample_members
 384         member_def(perf_record_lost, id, T_ULONGLONG, "event id"),
 385         member_def(perf_record_lost, lost, T_ULONGLONG, "number of lost events"),
 386         { .name = NULL, },
 387 };
 388
 389 static PyObject *pyrf_lost_event__repr(struct pyrf_event *pevent)
 390 {
 391         PyObject *ret;
 392         char *s;
 393
 394         if (asprintf(&s, "{ type: lost, id: %#" PRI_lx64 ", "
 395                          "lost: %#" PRI_lx64 " }",
 396                      pevent->event.lost.id, pevent->event.lost.lost) < 0) {
 397                 ret = PyErr_NoMemory();
 398         } else {
 399                 ret = _PyUnicode_FromString(s);
 400                 free(s);
 401         }
 402         return ret;
 403 }
 404
 405 static PyTypeObject pyrf_lost_event__type = {
 406         PyVarObject_HEAD_INIT(NULL, 0)
 407         .tp_name        = "perf.lost_event",
 408         .tp_basicsize   = sizeof(struct pyrf_event),
 409         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 410         .tp_doc         = pyrf_lost_event__doc,
 411         .tp_members     = pyrf_lost_event__members,
 412         .tp_repr        = (reprfunc)pyrf_lost_event__repr,
 413 };
 414
 415 static char pyrf_read_event__doc[] = PyDoc_STR("perf read event object.");
 416
 417 static PyMemberDef pyrf_read_event__members[] = {
 418         sample_members
 419         member_def(perf_record_read, pid, T_UINT, "event pid"),
 420         member_def(perf_record_read, tid, T_UINT, "event tid"),
 421         { .name = NULL, },
 422 };
 423
 424 static PyObject *pyrf_read_event__repr(struct pyrf_event *pevent)
 425 {
 426         return _PyUnicode_FromFormat("{ type: read, pid: %u, tid: %u }",
 427                                    pevent->event.read.pid,
 428                                    pevent->event.read.tid);
 429         /*
 430          * FIXME: return the array of read values,
 431          * making this method useful ;-)
 432          */
 433 }
 434
 435 static PyTypeObject pyrf_read_event__type = {
 436         PyVarObject_HEAD_INIT(NULL, 0)
 437         .tp_name        = "perf.read_event",
 438         .tp_basicsize   = sizeof(struct pyrf_event),
 439         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 440         .tp_doc         = pyrf_read_event__doc,
 441         .tp_members     = pyrf_read_event__members,
 442         .tp_repr        = (reprfunc)pyrf_read_event__repr,
 443 };
 444
 445 static char pyrf_sample_event__doc[] = PyDoc_STR("perf sample event object.");
 446
 447 static PyMemberDef pyrf_sample_event__members[] = {
 448         sample_members
 449         member_def(perf_event_header, type, T_UINT, "event type"),
 450         { .name = NULL, },
 451 };
 452
 453 static PyObject *pyrf_sample_event__repr(struct pyrf_event *pevent)
 454 {
 455         PyObject *ret;
 456         char *s;
 457
 458         if (asprintf(&s, "{ type: sample }") < 0) {
 459                 ret = PyErr_NoMemory();
 460         } else {
 461                 ret = _PyUnicode_FromString(s);
 462                 free(s);
 463         }
 464         return ret;
 465 }
 466
 467 #ifdef HAVE_LIBTRACEEVENT
 468 static bool is_tracepoint(struct pyrf_event *pevent)
 469 {
 470         return pevent->evsel->core.attr.type == PERF_TYPE_TRACEPOINT;
 471 }
 472
 473 static PyObject*
 474 tracepoint_field(struct pyrf_event *pe, struct tep_format_field *field)
 475 {
 476         struct tep_handle *pevent = field->event->tep;
 477         void *data = pe->sample.raw_data;
 478         PyObject *ret = NULL;
 479         unsigned long long val;
 480         unsigned int offset, len;
 481
 482         if (field->flags & TEP_FIELD_IS_ARRAY) {
 483                 offset = field->offset;
 484                 len    = field->size;
 485                 if (field->flags & TEP_FIELD_IS_DYNAMIC) {
 486                         val     = tep_read_number(pevent, data + offset, len);
 487                         offset  = val;
 488                         len     = offset >> 16;
 489                         offset &= 0xffff;
 490                         if (tep_field_is_relative(field->flags))
 491                                 offset += field->offset + field->size;
 492                 }
 493                 if (field->flags & TEP_FIELD_IS_STRING &&
 494                     is_printable_array(data + offset, len)) {
 495                         ret = _PyUnicode_FromString((char *)data + offset);
 496                 } else {
 497                         ret = PyByteArray_FromStringAndSize((const char *) data + offset, len);
 498                         field->flags &= ~TEP_FIELD_IS_STRING;
 499                 }
 500         } else {
 501                 val = tep_read_number(pevent, data + field->offset,
 502                                       field->size);
 503                 if (field->flags & TEP_FIELD_IS_POINTER)
 504                         ret = PyLong_FromUnsignedLong((unsigned long) val);
 505                 else if (field->flags & TEP_FIELD_IS_SIGNED)
 506                         ret = PyLong_FromLong((long) val);
 507                 else
 508                         ret = PyLong_FromUnsignedLong((unsigned long) val);
 509         }
 510
 511         return ret;
 512 }
 513
 514 static PyObject*
 515 get_tracepoint_field(struct pyrf_event *pevent, PyObject *attr_name)
 516 {
 517         const char *str = _PyUnicode_AsString(PyObject_Str(attr_name));
 518         struct evsel *evsel = pevent->evsel;
 519         struct tep_format_field *field;
 520
 521         if (!evsel->tp_format) {
 522                 struct tep_event *tp_format;
 523
 524                 tp_format = trace_event__tp_format_id(evsel->core.attr.config);
 525                 if (IS_ERR_OR_NULL(tp_format))
 526                         return NULL;
 527
 528                 evsel->tp_format = tp_format;
 529         }
 530
 531         field = tep_find_any_field(evsel->tp_format, str);
 532         if (!field)
 533                 return NULL;
 534
 535         return tracepoint_field(pevent, field);
 536 }
 537 #endif /* HAVE_LIBTRACEEVENT */
 538
 539 static PyObject*
 540 pyrf_sample_event__getattro(struct pyrf_event *pevent, PyObject *attr_name)
 541 {
 542         PyObject *obj = NULL;
 543
 544 #ifdef HAVE_LIBTRACEEVENT
 545         if (is_tracepoint(pevent))
 546                 obj = get_tracepoint_field(pevent, attr_name);
 547 #endif
 548
 549         return obj ?: PyObject_GenericGetAttr((PyObject *) pevent, attr_name);
 550 }
 551
 552 static PyTypeObject pyrf_sample_event__type = {
 553         PyVarObject_HEAD_INIT(NULL, 0)
 554         .tp_name        = "perf.sample_event",
 555         .tp_basicsize   = sizeof(struct pyrf_event),
 556         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 557         .tp_doc         = pyrf_sample_event__doc,
 558         .tp_members     = pyrf_sample_event__members,
 559         .tp_repr        = (reprfunc)pyrf_sample_event__repr,
 560         .tp_getattro    = (getattrofunc) pyrf_sample_event__getattro,
 561 };
 562
 563 static char pyrf_context_switch_event__doc[] = PyDoc_STR("perf context_switch event object.");
 564
 565 static PyMemberDef pyrf_context_switch_event__members[] = {
 566         sample_members
 567         member_def(perf_event_header, type, T_UINT, "event type"),
 568         member_def(perf_record_switch, next_prev_pid, T_UINT, "next/prev pid"),
 569         member_def(perf_record_switch, next_prev_tid, T_UINT, "next/prev tid"),
 570         { .name = NULL, },
 571 };
 572
 573 static PyObject *pyrf_context_switch_event__repr(struct pyrf_event *pevent)
 574 {
 575         PyObject *ret;
 576         char *s;
 577
 578         if (asprintf(&s, "{ type: context_switch, next_prev_pid: %u, next_prev_tid: %u, switch_out: %u }",
 579                      pevent->event.context_switch.next_prev_pid,
 580                      pevent->event.context_switch.next_prev_tid,
 581                      !!(pevent->event.header.misc & PERF_RECORD_MISC_SWITCH_OUT)) < 0) {
 582                 ret = PyErr_NoMemory();
 583         } else {
 584                 ret = _PyUnicode_FromString(s);
 585                 free(s);
 586         }
 587         return ret;
 588 }
 589
 590 static PyTypeObject pyrf_context_switch_event__type = {
 591         PyVarObject_HEAD_INIT(NULL, 0)
 592         .tp_name        = "perf.context_switch_event",
 593         .tp_basicsize   = sizeof(struct pyrf_event),
 594         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 595         .tp_doc         = pyrf_context_switch_event__doc,
 596         .tp_members     = pyrf_context_switch_event__members,
 597         .tp_repr        = (reprfunc)pyrf_context_switch_event__repr,
 598 };
 599
 600 static int pyrf_event__setup_types(void)
 601 {
 602         int err;
 603         pyrf_mmap_event__type.tp_new =
 604         pyrf_task_event__type.tp_new =
 605         pyrf_comm_event__type.tp_new =
 606         pyrf_lost_event__type.tp_new =
 607         pyrf_read_event__type.tp_new =
 608         pyrf_sample_event__type.tp_new =
 609         pyrf_context_switch_event__type.tp_new =
 610         pyrf_throttle_event__type.tp_new = PyType_GenericNew;
 611         err = PyType_Ready(&pyrf_mmap_event__type);
 612         if (err < 0)
 613                 goto out;
 614         err = PyType_Ready(&pyrf_lost_event__type);
 615         if (err < 0)
 616                 goto out;
 617         err = PyType_Ready(&pyrf_task_event__type);
 618         if (err < 0)
 619                 goto out;
 620         err = PyType_Ready(&pyrf_comm_event__type);
 621         if (err < 0)
 622                 goto out;
 623         err = PyType_Ready(&pyrf_throttle_event__type);
 624         if (err < 0)
 625                 goto out;
 626         err = PyType_Ready(&pyrf_read_event__type);
 627         if (err < 0)
 628                 goto out;
 629         err = PyType_Ready(&pyrf_sample_event__type);
 630         if (err < 0)
 631                 goto out;
 632         err = PyType_Ready(&pyrf_context_switch_event__type);
 633         if (err < 0)
 634                 goto out;
 635 out:
 636         return err;
 637 }
 638
 639 static PyTypeObject *pyrf_event__type[] = {
 640         [PERF_RECORD_MMAP]       = &pyrf_mmap_event__type,
 641         [PERF_RECORD_LOST]       = &pyrf_lost_event__type,
 642         [PERF_RECORD_COMM]       = &pyrf_comm_event__type,
 643         [PERF_RECORD_EXIT]       = &pyrf_task_event__type,
 644         [PERF_RECORD_THROTTLE]   = &pyrf_throttle_event__type,
 645         [PERF_RECORD_UNTHROTTLE] = &pyrf_throttle_event__type,
 646         [PERF_RECORD_FORK]       = &pyrf_task_event__type,
 647         [PERF_RECORD_READ]       = &pyrf_read_event__type,
 648         [PERF_RECORD_SAMPLE]     = &pyrf_sample_event__type,
 649         [PERF_RECORD_SWITCH]     = &pyrf_context_switch_event__type,
 650         [PERF_RECORD_SWITCH_CPU_WIDE]  = &pyrf_context_switch_event__type,
 651 };
 652
 653 static PyObject *pyrf_event__new(union perf_event *event)
 654 {
 655         struct pyrf_event *pevent;
 656         PyTypeObject *ptype;
 657
 658         if ((event->header.type < PERF_RECORD_MMAP ||
 659              event->header.type > PERF_RECORD_SAMPLE) &&
 660             !(event->header.type == PERF_RECORD_SWITCH ||
 661               event->header.type == PERF_RECORD_SWITCH_CPU_WIDE))
 662                 return NULL;
 663
 664         ptype = pyrf_event__type[event->header.type];
 665         pevent = PyObject_New(struct pyrf_event, ptype);
 666         if (pevent != NULL)
 667                 memcpy(&pevent->event, event, event->header.size);
 668         return (PyObject *)pevent;
 669 }
 670
 671 struct pyrf_cpu_map {
 672         PyObject_HEAD
 673
 674         struct perf_cpu_map *cpus;
 675 };
 676
 677 static int pyrf_cpu_map__init(struct pyrf_cpu_map *pcpus,
 678                               PyObject *args, PyObject *kwargs)
 679 {
 680         static char *kwlist[] = { "cpustr", NULL };
 681         char *cpustr = NULL;
 682
 683         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|s",
 684                                          kwlist, &cpustr))
 685                 return -1;
 686
 687         pcpus->cpus = perf_cpu_map__new(cpustr);
 688         if (pcpus->cpus == NULL)
 689                 return -1;
 690         return 0;
 691 }
 692
 693 static void pyrf_cpu_map__delete(struct pyrf_cpu_map *pcpus)
 694 {
 695         perf_cpu_map__put(pcpus->cpus);
 696         Py_TYPE(pcpus)->tp_free((PyObject*)pcpus);
 697 }
 698
 699 static Py_ssize_t pyrf_cpu_map__length(PyObject *obj)
 700 {
 701         struct pyrf_cpu_map *pcpus = (void *)obj;
 702
 703         return perf_cpu_map__nr(pcpus->cpus);
 704 }
 705
 706 static PyObject *pyrf_cpu_map__item(PyObject *obj, Py_ssize_t i)
 707 {
 708         struct pyrf_cpu_map *pcpus = (void *)obj;
 709
 710         if (i >= perf_cpu_map__nr(pcpus->cpus))
 711                 return NULL;
 712
 713         return Py_BuildValue("i", perf_cpu_map__cpu(pcpus->cpus, i).cpu);
 714 }
 715
 716 static PySequenceMethods pyrf_cpu_map__sequence_methods = {
 717         .sq_length = pyrf_cpu_map__length,
 718         .sq_item   = pyrf_cpu_map__item,
 719 };
 720
 721 static char pyrf_cpu_map__doc[] = PyDoc_STR("cpu map object.");
 722
 723 static PyTypeObject pyrf_cpu_map__type = {
 724         PyVarObject_HEAD_INIT(NULL, 0)
 725         .tp_name        = "perf.cpu_map",
 726         .tp_basicsize   = sizeof(struct pyrf_cpu_map),
 727         .tp_dealloc     = (destructor)pyrf_cpu_map__delete,
 728         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 729         .tp_doc         = pyrf_cpu_map__doc,
 730         .tp_as_sequence = &pyrf_cpu_map__sequence_methods,
 731         .tp_init        = (initproc)pyrf_cpu_map__init,
 732 };
 733
 734 static int pyrf_cpu_map__setup_types(void)
 735 {
 736         pyrf_cpu_map__type.tp_new = PyType_GenericNew;
 737         return PyType_Ready(&pyrf_cpu_map__type);
 738 }
 739
 740 struct pyrf_thread_map {
 741         PyObject_HEAD
 742
 743         struct perf_thread_map *threads;
 744 };
 745
 746 static int pyrf_thread_map__init(struct pyrf_thread_map *pthreads,
 747                                  PyObject *args, PyObject *kwargs)
 748 {
 749         static char *kwlist[] = { "pid", "tid", "uid", NULL };
 750         int pid = -1, tid = -1, uid = UINT_MAX;
 751
 752         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|iii",
 753                                          kwlist, &pid, &tid, &uid))
 754                 return -1;
 755
 756         pthreads->threads = thread_map__new(pid, tid, uid);
 757         if (pthreads->threads == NULL)
 758                 return -1;
 759         return 0;
 760 }
 761
 762 static void pyrf_thread_map__delete(struct pyrf_thread_map *pthreads)
 763 {
 764         perf_thread_map__put(pthreads->threads);
 765         Py_TYPE(pthreads)->tp_free((PyObject*)pthreads);
 766 }
 767
 768 static Py_ssize_t pyrf_thread_map__length(PyObject *obj)
 769 {
 770         struct pyrf_thread_map *pthreads = (void *)obj;
 771
 772         return perf_thread_map__nr(pthreads->threads);
 773 }
 774
 775 static PyObject *pyrf_thread_map__item(PyObject *obj, Py_ssize_t i)
 776 {
 777         struct pyrf_thread_map *pthreads = (void *)obj;
 778
 779         if (i >= perf_thread_map__nr(pthreads->threads))
 780                 return NULL;
 781
 782         return Py_BuildValue("i", perf_thread_map__pid(pthreads->threads, i));
 783 }
 784
 785 static PySequenceMethods pyrf_thread_map__sequence_methods = {
 786         .sq_length = pyrf_thread_map__length,
 787         .sq_item   = pyrf_thread_map__item,
 788 };
 789
 790 static char pyrf_thread_map__doc[] = PyDoc_STR("thread map object.");
 791
 792 static PyTypeObject pyrf_thread_map__type = {
 793         PyVarObject_HEAD_INIT(NULL, 0)
 794         .tp_name        = "perf.thread_map",
 795         .tp_basicsize   = sizeof(struct pyrf_thread_map),
 796         .tp_dealloc     = (destructor)pyrf_thread_map__delete,
 797         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 798         .tp_doc         = pyrf_thread_map__doc,
 799         .tp_as_sequence = &pyrf_thread_map__sequence_methods,
 800         .tp_init        = (initproc)pyrf_thread_map__init,
 801 };
 802
 803 static int pyrf_thread_map__setup_types(void)
 804 {
 805         pyrf_thread_map__type.tp_new = PyType_GenericNew;
 806         return PyType_Ready(&pyrf_thread_map__type);
 807 }
 808
 809 struct pyrf_evsel {
 810         PyObject_HEAD
 811
 812         struct evsel evsel;
 813 };
 814
 815 static int pyrf_evsel__init(struct pyrf_evsel *pevsel,
 816                             PyObject *args, PyObject *kwargs)
 817 {
 818         struct perf_event_attr attr = {
 819                 .type = PERF_TYPE_HARDWARE,
 820                 .config = PERF_COUNT_HW_CPU_CYCLES,
 821                 .sample_type = PERF_SAMPLE_PERIOD | PERF_SAMPLE_TID,
 822         };
 823         static char *kwlist[] = {
 824                 "type",
 825                 "config",
 826                 "sample_freq",
 827                 "sample_period",
 828                 "sample_type",
 829                 "read_format",
 830                 "disabled",
 831                 "inherit",
 832                 "pinned",
 833                 "exclusive",
 834                 "exclude_user",
 835                 "exclude_kernel",
 836                 "exclude_hv",
 837                 "exclude_idle",
 838                 "mmap",
 839                 "context_switch",
 840                 "comm",
 841                 "freq",
 842                 "inherit_stat",
 843                 "enable_on_exec",
 844                 "task",
 845                 "watermark",
 846                 "precise_ip",
 847                 "mmap_data",
 848                 "sample_id_all",
 849                 "wakeup_events",
 850                 "bp_type",
 851                 "bp_addr",
 852                 "bp_len",
 853                  NULL
 854         };
 855         u64 sample_period = 0;
 856         u32 disabled = 0,
 857             inherit = 0,
 858             pinned = 0,
 859             exclusive = 0,
 860             exclude_user = 0,
 861             exclude_kernel = 0,
 862             exclude_hv = 0,
 863             exclude_idle = 0,
 864             mmap = 0,
 865             context_switch = 0,
 866             comm = 0,
 867             freq = 1,
 868             inherit_stat = 0,
 869             enable_on_exec = 0,
 870             task = 0,
 871             watermark = 0,
 872             precise_ip = 0,
 873             mmap_data = 0,
 874             sample_id_all = 1;
 875         int idx = 0;
 876
 877         if (!PyArg_ParseTupleAndKeywords(args, kwargs,
 878                                          "|iKiKKiiiiiiiiiiiiiiiiiiiiiiKK", kwlist,
 879                                          &attr.type, &attr.config, &attr.sample_freq,
 880                                          &sample_period, &attr.sample_type,
 881                                          &attr.read_format, &disabled, &inherit,
 882                                          &pinned, &exclusive, &exclude_user,
 883                                          &exclude_kernel, &exclude_hv, &exclude_idle,
 884                                          &mmap, &context_switch, &comm, &freq, &inherit_stat,
 885                                          &enable_on_exec, &task, &watermark,
 886                                          &precise_ip, &mmap_data, &sample_id_all,
 887                                          &attr.wakeup_events, &attr.bp_type,
 888                                          &attr.bp_addr, &attr.bp_len, &idx))
 889                 return -1;
 890
 891         /* union... */
 892         if (sample_period != 0) {
 893                 if (attr.sample_freq != 0)
 894                         return -1; /* FIXME: throw right exception */
 895                 attr.sample_period = sample_period;
 896         }
 897
 898         /* Bitfields */
 899         attr.disabled       = disabled;
 900         attr.inherit        = inherit;
 901         attr.pinned         = pinned;
 902         attr.exclusive      = exclusive;
 903         attr.exclude_user   = exclude_user;
 904         attr.exclude_kernel = exclude_kernel;
 905         attr.exclude_hv     = exclude_hv;
 906         attr.exclude_idle   = exclude_idle;
 907         attr.mmap           = mmap;
 908         attr.context_switch = context_switch;
 909         attr.comm           = comm;
 910         attr.freq           = freq;
 911         attr.inherit_stat   = inherit_stat;
 912         attr.enable_on_exec = enable_on_exec;
 913         attr.task           = task;
 914         attr.watermark      = watermark;
 915         attr.precise_ip     = precise_ip;
 916         attr.mmap_data      = mmap_data;
 917         attr.sample_id_all  = sample_id_all;
 918         attr.size           = sizeof(attr);
 919
 920         evsel__init(&pevsel->evsel, &attr, idx);
 921         return 0;
 922 }
 923
 924 static void pyrf_evsel__delete(struct pyrf_evsel *pevsel)
 925 {
 926         evsel__exit(&pevsel->evsel);
 927         Py_TYPE(pevsel)->tp_free((PyObject*)pevsel);
 928 }
 929
 930 static PyObject *pyrf_evsel__open(struct pyrf_evsel *pevsel,
 931                                   PyObject *args, PyObject *kwargs)
 932 {
 933         struct evsel *evsel = &pevsel->evsel;
 934         struct perf_cpu_map *cpus = NULL;
 935         struct perf_thread_map *threads = NULL;
 936         PyObject *pcpus = NULL, *pthreads = NULL;
 937         int group = 0, inherit = 0;
 938         static char *kwlist[] = { "cpus", "threads", "group", "inherit", NULL };
 939
 940         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|OOii", kwlist,
 941                                          &pcpus, &pthreads, &group, &inherit))
 942                 return NULL;
 943
 944         if (pthreads != NULL)
 945                 threads = ((struct pyrf_thread_map *)pthreads)->threads;
 946
 947         if (pcpus != NULL)
 948                 cpus = ((struct pyrf_cpu_map *)pcpus)->cpus;
 949
 950         evsel->core.attr.inherit = inherit;
 951         /*
 952          * This will group just the fds for this single evsel, to group
 953          * multiple events, use evlist.open().
 954          */
 955         if (evsel__open(evsel, cpus, threads) < 0) {
 956                 PyErr_SetFromErrno(PyExc_OSError);
 957                 return NULL;
 958         }
 959
 960         Py_INCREF(Py_None);
 961         return Py_None;
 962 }
 963
 964 static PyMethodDef pyrf_evsel__methods[] = {
 965         {
 966                 .ml_name  = "open",
 967                 .ml_meth  = (PyCFunction)pyrf_evsel__open,
 968                 .ml_flags = METH_VARARGS | METH_KEYWORDS,
 969                 .ml_doc   = PyDoc_STR("open the event selector file descriptor table.")
 970         },
 971         { .ml_name = NULL, }
 972 };
 973
 974 static char pyrf_evsel__doc[] = PyDoc_STR("perf event selector list object.");
 975
 976 static PyTypeObject pyrf_evsel__type = {
 977         PyVarObject_HEAD_INIT(NULL, 0)
 978         .tp_name        = "perf.evsel",
 979         .tp_basicsize   = sizeof(struct pyrf_evsel),
 980         .tp_dealloc     = (destructor)pyrf_evsel__delete,
 981         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 982         .tp_doc         = pyrf_evsel__doc,
 983         .tp_methods     = pyrf_evsel__methods,
 984         .tp_init        = (initproc)pyrf_evsel__init,
 985 };
 986
 987 static int pyrf_evsel__setup_types(void)
 988 {
 989         pyrf_evsel__type.tp_new = PyType_GenericNew;
 990         return PyType_Ready(&pyrf_evsel__type);
 991 }
 992
 993 struct pyrf_evlist {
 994         PyObject_HEAD
 995
 996         struct evlist evlist;
 997 };
 998
 999 static int pyrf_evlist__init(struct pyrf_evlist *pevlist,
1000                              PyObject *args, PyObject *kwargs __maybe_unused)
1001 {
1002         PyObject *pcpus = NULL, *pthreads = NULL;
1003         struct perf_cpu_map *cpus;
1004         struct perf_thread_map *threads;
1005
1006         if (!PyArg_ParseTuple(args, "OO", &pcpus, &pthreads))
1007                 return -1;
1008
1009         threads = ((struct pyrf_thread_map *)pthreads)->threads;
1010         cpus = ((struct pyrf_cpu_map *)pcpus)->cpus;
1011         evlist__init(&pevlist->evlist, cpus, threads);
1012         return 0;
1013 }
1014
1015 static void pyrf_evlist__delete(struct pyrf_evlist *pevlist)
1016 {
1017         evlist__exit(&pevlist->evlist);
1018         Py_TYPE(pevlist)->tp_free((PyObject*)pevlist);
1019 }
1020
1021 static PyObject *pyrf_evlist__mmap(struct pyrf_evlist *pevlist,
1022                                    PyObject *args, PyObject *kwargs)
1023 {
1024         struct evlist *evlist = &pevlist->evlist;
1025         static char *kwlist[] = { "pages", "overwrite", NULL };
1026         int pages = 128, overwrite = false;
1027
1028         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|ii", kwlist,
1029                                          &pages, &overwrite))
1030                 return NULL;
1031
1032         if (evlist__mmap(evlist, pages) < 0) {
1033                 PyErr_SetFromErrno(PyExc_OSError);
1034                 return NULL;
1035         }
1036
1037         Py_INCREF(Py_None);
1038         return Py_None;
1039 }
1040
1041 static PyObject *pyrf_evlist__poll(struct pyrf_evlist *pevlist,
1042                                    PyObject *args, PyObject *kwargs)
1043 {
1044         struct evlist *evlist = &pevlist->evlist;
1045         static char *kwlist[] = { "timeout", NULL };
1046         int timeout = -1, n;
1047
1048         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|i", kwlist, &timeout))
1049                 return NULL;
1050
1051         n = evlist__poll(evlist, timeout);
1052         if (n < 0) {
1053                 PyErr_SetFromErrno(PyExc_OSError);
1054                 return NULL;
1055         }
1056
1057         return Py_BuildValue("i", n);
1058 }
1059
1060 static PyObject *pyrf_evlist__get_pollfd(struct pyrf_evlist *pevlist,
1061                                          PyObject *args __maybe_unused,
1062                                          PyObject *kwargs __maybe_unused)
1063 {
1064         struct evlist *evlist = &pevlist->evlist;
1065         PyObject *list = PyList_New(0);
1066         int i;
1067
1068         for (i = 0; i < evlist->core.pollfd.nr; ++i) {
1069                 PyObject *file;
1070 #if PY_MAJOR_VERSION < 3
1071                 FILE *fp = fdopen(evlist->core.pollfd.entries[i].fd, "r");
1072
1073                 if (fp == NULL)
1074                         goto free_list;
1075
1076                 file = PyFile_FromFile(fp, "perf", "r", NULL);
1077 #else
1078                 file = PyFile_FromFd(evlist->core.pollfd.entries[i].fd, "perf", "r", -1,
1079                                      NULL, NULL, NULL, 0);
1080 #endif
1081                 if (file == NULL)
1082                         goto free_list;
1083
1084                 if (PyList_Append(list, file) != 0) {
1085                         Py_DECREF(file);
1086                         goto free_list;
1087                 }
1088
1089                 Py_DECREF(file);
1090         }
1091
1092         return list;
1093 free_list:
1094         return PyErr_NoMemory();
1095 }
1096
1097
1098 static PyObject *pyrf_evlist__add(struct pyrf_evlist *pevlist,
1099                                   PyObject *args,
1100                                   PyObject *kwargs __maybe_unused)
1101 {
1102         struct evlist *evlist = &pevlist->evlist;
1103         PyObject *pevsel;
1104         struct evsel *evsel;
1105
1106         if (!PyArg_ParseTuple(args, "O", &pevsel))
1107                 return NULL;
1108
1109         Py_INCREF(pevsel);
1110         evsel = &((struct pyrf_evsel *)pevsel)->evsel;
1111         evsel->core.idx = evlist->core.nr_entries;
1112         evlist__add(evlist, evsel);
1113
1114         return Py_BuildValue("i", evlist->core.nr_entries);
1115 }
1116
1117 static struct mmap *get_md(struct evlist *evlist, int cpu)
1118 {
1119         int i;
1120
1121         for (i = 0; i < evlist->core.nr_mmaps; i++) {
1122                 struct mmap *md = &evlist->mmap[i];
1123
1124                 if (md->core.cpu.cpu == cpu)
1125                         return md;
1126         }
1127
1128         return NULL;
1129 }
1130
1131 static PyObject *pyrf_evlist__read_on_cpu(struct pyrf_evlist *pevlist,
1132                                           PyObject *args, PyObject *kwargs)
1133 {
1134         struct evlist *evlist = &pevlist->evlist;
1135         union perf_event *event;
1136         int sample_id_all = 1, cpu;
1137         static char *kwlist[] = { "cpu", "sample_id_all", NULL };
1138         struct mmap *md;
1139         int err;
1140
1141         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "i|i", kwlist,
1142                                          &cpu, &sample_id_all))
1143                 return NULL;
1144
1145         md = get_md(evlist, cpu);
1146         if (!md)
1147                 return NULL;
1148
1149         if (perf_mmap__read_init(&md->core) < 0)
1150                 goto end;
1151
1152         event = perf_mmap__read_event(&md->core);
1153         if (event != NULL) {
1154                 PyObject *pyevent = pyrf_event__new(event);
1155                 struct pyrf_event *pevent = (struct pyrf_event *)pyevent;
1156                 struct evsel *evsel;
1157
1158                 if (pyevent == NULL)
1159                         return PyErr_NoMemory();
1160
1161                 evsel = evlist__event2evsel(evlist, event);
1162                 if (!evsel) {
1163                         Py_INCREF(Py_None);
1164                         return Py_None;
1165                 }
1166
1167                 pevent->evsel = evsel;
1168
1169                 err = evsel__parse_sample(evsel, event, &pevent->sample);
1170
1171                 /* Consume the even only after we parsed it out. */
1172                 perf_mmap__consume(&md->core);
1173
1174                 if (err)
1175                         return PyErr_Format(PyExc_OSError,
1176                                             "perf: can't parse sample, err=%d", err);
1177                 return pyevent;
1178         }
1179 end:
1180         Py_INCREF(Py_None);
1181         return Py_None;
1182 }
1183
1184 static PyObject *pyrf_evlist__open(struct pyrf_evlist *pevlist,
1185                                    PyObject *args, PyObject *kwargs)
1186 {
1187         struct evlist *evlist = &pevlist->evlist;
1188
1189         if (evlist__open(evlist) < 0) {
1190                 PyErr_SetFromErrno(PyExc_OSError);
1191                 return NULL;
1192         }
1193
1194         Py_INCREF(Py_None);
1195         return Py_None;
1196 }
1197
1198 static PyMethodDef pyrf_evlist__methods[] = {
1199         {
1200                 .ml_name  = "mmap",
1201                 .ml_meth  = (PyCFunction)pyrf_evlist__mmap,
1202                 .ml_flags = METH_VARARGS | METH_KEYWORDS,
1203                 .ml_doc   = PyDoc_STR("mmap the file descriptor table.")
1204         },
1205         {
1206                 .ml_name  = "open",
1207                 .ml_meth  = (PyCFunction)pyrf_evlist__open,
1208                 .ml_flags = METH_VARARGS | METH_KEYWORDS,
1209                 .ml_doc   = PyDoc_STR("open the file descriptors.")
1210         },
1211         {
1212                 .ml_name  = "poll",
1213                 .ml_meth  = (PyCFunction)pyrf_evlist__poll,
1214                 .ml_flags = METH_VARARGS | METH_KEYWORDS,
1215                 .ml_doc   = PyDoc_STR("poll the file descriptor table.")
1216         },
1217         {
1218                 .ml_name  = "get_pollfd",
1219                 .ml_meth  = (PyCFunction)pyrf_evlist__get_pollfd,
1220                 .ml_flags = METH_VARARGS | METH_KEYWORDS,
1221                 .ml_doc   = PyDoc_STR("get the poll file descriptor table.")
1222         },
1223         {
1224                 .ml_name  = "add",
1225                 .ml_meth  = (PyCFunction)pyrf_evlist__add,
1226                 .ml_flags = METH_VARARGS | METH_KEYWORDS,
1227                 .ml_doc   = PyDoc_STR("adds an event selector to the list.")
1228         },
1229         {
1230                 .ml_name  = "read_on_cpu",
1231                 .ml_meth  = (PyCFunction)pyrf_evlist__read_on_cpu,
1232                 .ml_flags = METH_VARARGS | METH_KEYWORDS,
1233                 .ml_doc   = PyDoc_STR("reads an event.")
1234         },
1235         { .ml_name = NULL, }
1236 };
1237
1238 static Py_ssize_t pyrf_evlist__length(PyObject *obj)
1239 {
1240         struct pyrf_evlist *pevlist = (void *)obj;
1241
1242         return pevlist->evlist.core.nr_entries;
1243 }
1244
1245 static PyObject *pyrf_evlist__item(PyObject *obj, Py_ssize_t i)
1246 {
1247         struct pyrf_evlist *pevlist = (void *)obj;
1248         struct evsel *pos;
1249
1250         if (i >= pevlist->evlist.core.nr_entries)
1251                 return NULL;
1252
1253         evlist__for_each_entry(&pevlist->evlist, pos) {
1254                 if (i-- == 0)
1255                         break;
1256         }
1257
1258         return Py_BuildValue("O", container_of(pos, struct pyrf_evsel, evsel));
1259 }
1260
1261 static PySequenceMethods pyrf_evlist__sequence_methods = {
1262         .sq_length = pyrf_evlist__length,
1263         .sq_item   = pyrf_evlist__item,
1264 };
1265
1266 static char pyrf_evlist__doc[] = PyDoc_STR("perf event selector list object.");
1267
1268 static PyTypeObject pyrf_evlist__type = {
1269         PyVarObject_HEAD_INIT(NULL, 0)
1270         .tp_name        = "perf.evlist",
1271         .tp_basicsize   = sizeof(struct pyrf_evlist),
1272         .tp_dealloc     = (destructor)pyrf_evlist__delete,
1273         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
1274         .tp_as_sequence = &pyrf_evlist__sequence_methods,
1275         .tp_doc         = pyrf_evlist__doc,
1276         .tp_methods     = pyrf_evlist__methods,
1277         .tp_init        = (initproc)pyrf_evlist__init,
1278 };
1279
1280 static int pyrf_evlist__setup_types(void)
1281 {
1282         pyrf_evlist__type.tp_new = PyType_GenericNew;
1283         return PyType_Ready(&pyrf_evlist__type);
1284 }
1285
1286 #define PERF_CONST(name) { #name, PERF_##name }
1287
1288 static struct {
1289         const char *name;
1290         int         value;
1291 } perf__constants[] = {
1292         PERF_CONST(TYPE_HARDWARE),
1293         PERF_CONST(TYPE_SOFTWARE),
1294         PERF_CONST(TYPE_TRACEPOINT),
1295         PERF_CONST(TYPE_HW_CACHE),
1296         PERF_CONST(TYPE_RAW),
1297         PERF_CONST(TYPE_BREAKPOINT),
1298
1299         PERF_CONST(COUNT_HW_CPU_CYCLES),
1300         PERF_CONST(COUNT_HW_INSTRUCTIONS),
1301         PERF_CONST(COUNT_HW_CACHE_REFERENCES),
1302         PERF_CONST(COUNT_HW_CACHE_MISSES),
1303         PERF_CONST(COUNT_HW_BRANCH_INSTRUCTIONS),
1304         PERF_CONST(COUNT_HW_BRANCH_MISSES),
1305         PERF_CONST(COUNT_HW_BUS_CYCLES),
1306         PERF_CONST(COUNT_HW_CACHE_L1D),
1307         PERF_CONST(COUNT_HW_CACHE_L1I),
1308         PERF_CONST(COUNT_HW_CACHE_LL),
1309         PERF_CONST(COUNT_HW_CACHE_DTLB),
1310         PERF_CONST(COUNT_HW_CACHE_ITLB),
1311         PERF_CONST(COUNT_HW_CACHE_BPU),
1312         PERF_CONST(COUNT_HW_CACHE_OP_READ),
1313         PERF_CONST(COUNT_HW_CACHE_OP_WRITE),
1314         PERF_CONST(COUNT_HW_CACHE_OP_PREFETCH),
1315         PERF_CONST(COUNT_HW_CACHE_RESULT_ACCESS),
1316         PERF_CONST(COUNT_HW_CACHE_RESULT_MISS),
1317
1318         PERF_CONST(COUNT_HW_STALLED_CYCLES_FRONTEND),
1319         PERF_CONST(COUNT_HW_STALLED_CYCLES_BACKEND),
1320
1321         PERF_CONST(COUNT_SW_CPU_CLOCK),
1322         PERF_CONST(COUNT_SW_TASK_CLOCK),
1323         PERF_CONST(COUNT_SW_PAGE_FAULTS),
1324         PERF_CONST(COUNT_SW_CONTEXT_SWITCHES),
1325         PERF_CONST(COUNT_SW_CPU_MIGRATIONS),
1326         PERF_CONST(COUNT_SW_PAGE_FAULTS_MIN),
1327         PERF_CONST(COUNT_SW_PAGE_FAULTS_MAJ),
1328         PERF_CONST(COUNT_SW_ALIGNMENT_FAULTS),
1329         PERF_CONST(COUNT_SW_EMULATION_FAULTS),
1330         PERF_CONST(COUNT_SW_DUMMY),
1331
1332         PERF_CONST(SAMPLE_IP),
1333         PERF_CONST(SAMPLE_TID),
1334         PERF_CONST(SAMPLE_TIME),
1335         PERF_CONST(SAMPLE_ADDR),
1336         PERF_CONST(SAMPLE_READ),
1337         PERF_CONST(SAMPLE_CALLCHAIN),
1338         PERF_CONST(SAMPLE_ID),
1339         PERF_CONST(SAMPLE_CPU),
1340         PERF_CONST(SAMPLE_PERIOD),
1341         PERF_CONST(SAMPLE_STREAM_ID),
1342         PERF_CONST(SAMPLE_RAW),
1343
1344         PERF_CONST(FORMAT_TOTAL_TIME_ENABLED),
1345         PERF_CONST(FORMAT_TOTAL_TIME_RUNNING),
1346         PERF_CONST(FORMAT_ID),
1347         PERF_CONST(FORMAT_GROUP),
1348
1349         PERF_CONST(RECORD_MMAP),
1350         PERF_CONST(RECORD_LOST),
1351         PERF_CONST(RECORD_COMM),
1352         PERF_CONST(RECORD_EXIT),
1353         PERF_CONST(RECORD_THROTTLE),
1354         PERF_CONST(RECORD_UNTHROTTLE),
1355         PERF_CONST(RECORD_FORK),
1356         PERF_CONST(RECORD_READ),
1357         PERF_CONST(RECORD_SAMPLE),
1358         PERF_CONST(RECORD_MMAP2),
1359         PERF_CONST(RECORD_AUX),
1360         PERF_CONST(RECORD_ITRACE_START),
1361         PERF_CONST(RECORD_LOST_SAMPLES),
1362         PERF_CONST(RECORD_SWITCH),
1363         PERF_CONST(RECORD_SWITCH_CPU_WIDE),
1364
1365         PERF_CONST(RECORD_MISC_SWITCH_OUT),
1366         { .name = NULL, },
1367 };
1368
1369 static PyObject *pyrf__tracepoint(struct pyrf_evsel *pevsel,
1370                                   PyObject *args, PyObject *kwargs)
1371 {
1372 #ifndef HAVE_LIBTRACEEVENT
1373         return NULL;
1374 #else
1375         struct tep_event *tp_format;
1376         static char *kwlist[] = { "sys", "name", NULL };
1377         char *sys  = NULL;
1378         char *name = NULL;
1379
1380         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|ss", kwlist,
1381                                          &sys, &name))
1382                 return NULL;
1383
1384         tp_format = trace_event__tp_format(sys, name);
1385         if (IS_ERR(tp_format))
1386                 return _PyLong_FromLong(-1);
1387
1388         return _PyLong_FromLong(tp_format->id);
1389 #endif // HAVE_LIBTRACEEVENT
1390 }
1391
1392 static PyMethodDef perf__methods[] = {
1393         {
1394                 .ml_name  = "tracepoint",
1395                 .ml_meth  = (PyCFunction) pyrf__tracepoint,
1396                 .ml_flags = METH_VARARGS | METH_KEYWORDS,
1397                 .ml_doc   = PyDoc_STR("Get tracepoint config.")
1398         },
1399         { .ml_name = NULL, }
1400 };
1401
1402 #if PY_MAJOR_VERSION < 3
1403 PyMODINIT_FUNC initperf(void)
1404 #else
1405 PyMODINIT_FUNC PyInit_perf(void)
1406 #endif
1407 {
1408         PyObject *obj;
1409         int i;
1410         PyObject *dict;
1411 #if PY_MAJOR_VERSION < 3
1412         PyObject *module = Py_InitModule("perf", perf__methods);
1413 #else
1414         static struct PyModuleDef moduledef = {
1415                 PyModuleDef_HEAD_INIT,
1416                 "perf",                 /* m_name */
1417                 "",                     /* m_doc */
1418                 -1,                     /* m_size */
1419                 perf__methods,          /* m_methods */
1420                 NULL,                   /* m_reload */
1421                 NULL,                   /* m_traverse */
1422                 NULL,                   /* m_clear */
1423                 NULL,                   /* m_free */
1424         };
1425         PyObject *module = PyModule_Create(&moduledef);
1426 #endif
1427
1428         if (module == NULL ||
1429             pyrf_event__setup_types() < 0 ||
1430             pyrf_evlist__setup_types() < 0 ||
1431             pyrf_evsel__setup_types() < 0 ||
1432             pyrf_thread_map__setup_types() < 0 ||
1433             pyrf_cpu_map__setup_types() < 0)
1434 #if PY_MAJOR_VERSION < 3
1435                 return;
1436 #else
1437                 return module;
1438 #endif
1439
1440         /* The page_size is placed in util object. */
1441         page_size = sysconf(_SC_PAGE_SIZE);
1442
1443         Py_INCREF(&pyrf_evlist__type);
1444         PyModule_AddObject(module, "evlist", (PyObject*)&pyrf_evlist__type);
1445
1446         Py_INCREF(&pyrf_evsel__type);
1447         PyModule_AddObject(module, "evsel", (PyObject*)&pyrf_evsel__type);
1448
1449         Py_INCREF(&pyrf_mmap_event__type);
1450         PyModule_AddObject(module, "mmap_event", (PyObject *)&pyrf_mmap_event__type);
1451
1452         Py_INCREF(&pyrf_lost_event__type);
1453         PyModule_AddObject(module, "lost_event", (PyObject *)&pyrf_lost_event__type);
1454
1455         Py_INCREF(&pyrf_comm_event__type);
1456         PyModule_AddObject(module, "comm_event", (PyObject *)&pyrf_comm_event__type);
1457
1458         Py_INCREF(&pyrf_task_event__type);
1459         PyModule_AddObject(module, "task_event", (PyObject *)&pyrf_task_event__type);
1460
1461         Py_INCREF(&pyrf_throttle_event__type);
1462         PyModule_AddObject(module, "throttle_event", (PyObject *)&pyrf_throttle_event__type);
1463
1464         Py_INCREF(&pyrf_task_event__type);
1465         PyModule_AddObject(module, "task_event", (PyObject *)&pyrf_task_event__type);
1466
1467         Py_INCREF(&pyrf_read_event__type);
1468         PyModule_AddObject(module, "read_event", (PyObject *)&pyrf_read_event__type);
1469
1470         Py_INCREF(&pyrf_sample_event__type);
1471         PyModule_AddObject(module, "sample_event", (PyObject *)&pyrf_sample_event__type);
1472
1473         Py_INCREF(&pyrf_context_switch_event__type);
1474         PyModule_AddObject(module, "switch_event", (PyObject *)&pyrf_context_switch_event__type);
1475
1476         Py_INCREF(&pyrf_thread_map__type);
1477         PyModule_AddObject(module, "thread_map", (PyObject*)&pyrf_thread_map__type);
1478
1479         Py_INCREF(&pyrf_cpu_map__type);
1480         PyModule_AddObject(module, "cpu_map", (PyObject*)&pyrf_cpu_map__type);
1481
1482         dict = PyModule_GetDict(module);
1483         if (dict == NULL)
1484                 goto error;
1485
1486         for (i = 0; perf__constants[i].name != NULL; i++) {
1487                 obj = _PyLong_FromLong(perf__constants[i].value);
1488                 if (obj == NULL)
1489                         goto error;
1490                 PyDict_SetItemString(dict, perf__constants[i].name, obj);
1491                 Py_DECREF(obj);
1492         }
1493
1494 error:
1495         if (PyErr_Occurred())
1496                 PyErr_SetString(PyExc_ImportError, "perf: Init failed!");
1497 #if PY_MAJOR_VERSION >= 3
1498         return module;
1499 #endif
1500 }
1501
1502 /*
1503  * Dummy, to avoid dragging all the test_attr infrastructure in the python
1504  * binding.
1505  */
1506 void test_attr__open(struct perf_event_attr *attr, pid_t pid, struct perf_cpu cpu,
1507                      int fd, int group_fd, unsigned long flags)
1508 {
1509 }
1510
1511 void evlist__free_stats(struct evlist *evlist)
1512 {
1513 }