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