tools/perf/util/python.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 #include <Python.h>
   3 #include <structmember.h>
   4 #include <inttypes.h>
   5 #include <poll.h>
   6 #include <linux/err.h>
   7 #include <perf/cpumap.h>
   8 #include <traceevent/event-parse.h>
   9 #include "evlist.h"
  10 #include "callchain.h"
  11 #include "evsel.h"
  12 #include "event.h"
  13 #include "print_binary.h"
  14 #include "thread_map.h"
  15 #include "trace-event.h"
  16 #include "mmap.h"
  17 #include "util/env.h"
  18 #include <internal/lib.h>
  19 #include "../perf-sys.h"
  20
  21 #if PY_MAJOR_VERSION < 3
  22 #define _PyUnicode_FromString(arg) \
  23   PyString_FromString(arg)
  24 #define _PyUnicode_AsString(arg) \
  25   PyString_AsString(arg)
  26 #define _PyUnicode_FromFormat(...) \
  27   PyString_FromFormat(__VA_ARGS__)
  28 #define _PyLong_FromLong(arg) \
  29   PyInt_FromLong(arg)
  30
  31 #else
  32
  33 #define _PyUnicode_FromString(arg) \
  34   PyUnicode_FromString(arg)
  35 #define _PyUnicode_FromFormat(...) \
  36   PyUnicode_FromFormat(__VA_ARGS__)
  37 #define _PyLong_FromLong(arg) \
  38   PyLong_FromLong(arg)
  39 #endif
  40
  41 #ifndef Py_TYPE
  42 #define Py_TYPE(ob) (((PyObject*)(ob))->ob_type)
  43 #endif
  44
  45 /*
  46  * Provide these two so that we don't have to link against callchain.c and
  47  * start dragging hist.c, etc.
  48  */
  49 struct callchain_param callchain_param;
  50
  51 int parse_callchain_record(const char *arg __maybe_unused,
  52                            struct callchain_param *param __maybe_unused)
  53 {
  54         return 0;
  55 }
  56
  57 /*
  58  * Add this one here not to drag util/env.c
  59  */
  60 struct perf_env perf_env;
  61
  62 /*
  63  * Support debug printing even though util/debug.c is not linked.  That means
  64  * implementing 'verbose' and 'eprintf'.
  65  */
  66 int verbose;
  67
  68 int eprintf(int level, int var, const char *fmt, ...);
  69
  70 int eprintf(int level, int var, const char *fmt, ...)
  71 {
  72         va_list args;
  73         int ret = 0;
  74
  75         if (var >= level) {
  76                 va_start(args, fmt);
  77                 ret = vfprintf(stderr, fmt, args);
  78                 va_end(args);
  79         }
  80
  81         return ret;
  82 }
  83
  84 /* Define PyVarObject_HEAD_INIT for python 2.5 */
  85 #ifndef PyVarObject_HEAD_INIT
  86 # define PyVarObject_HEAD_INIT(type, size) PyObject_HEAD_INIT(type) size,
  87 #endif
  88
  89 #if PY_MAJOR_VERSION < 3
  90 PyMODINIT_FUNC initperf(void);
  91 #else
  92 PyMODINIT_FUNC PyInit_perf(void);
  93 #endif
  94
  95 #define member_def(type, member, ptype, help) \
  96         { #member, ptype, \
  97           offsetof(struct pyrf_event, event) + offsetof(struct type, member), \
  98           0, help }
  99
 100 #define sample_member_def(name, member, ptype, help) \
 101         { #name, ptype, \
 102           offsetof(struct pyrf_event, sample) + offsetof(struct perf_sample, member), \
 103           0, help }
 104
 105 struct pyrf_event {
 106         PyObject_HEAD
 107         struct evsel *evsel;
 108         struct perf_sample sample;
 109         union perf_event   event;
 110 };
 111
 112 #define sample_members \
 113         sample_member_def(sample_ip, ip, T_ULONGLONG, "event type"),                     \
 114         sample_member_def(sample_pid, pid, T_INT, "event pid"),                  \
 115         sample_member_def(sample_tid, tid, T_INT, "event tid"),                  \
 116         sample_member_def(sample_time, time, T_ULONGLONG, "event timestamp"),            \
 117         sample_member_def(sample_addr, addr, T_ULONGLONG, "event addr"),                 \
 118         sample_member_def(sample_id, id, T_ULONGLONG, "event id"),                       \
 119         sample_member_def(sample_stream_id, stream_id, T_ULONGLONG, "event stream id"), \
 120         sample_member_def(sample_period, period, T_ULONGLONG, "event period"),           \
 121         sample_member_def(sample_cpu, cpu, T_UINT, "event cpu"),
 122
 123 static char pyrf_mmap_event__doc[] = PyDoc_STR("perf mmap event object.");
 124
 125 static PyMemberDef pyrf_mmap_event__members[] = {
 126         sample_members
 127         member_def(perf_event_header, type, T_UINT, "event type"),
 128         member_def(perf_event_header, misc, T_UINT, "event misc"),
 129         member_def(perf_record_mmap, pid, T_UINT, "event pid"),
 130         member_def(perf_record_mmap, tid, T_UINT, "event tid"),
 131         member_def(perf_record_mmap, start, T_ULONGLONG, "start of the map"),
 132         member_def(perf_record_mmap, len, T_ULONGLONG, "map length"),
 133         member_def(perf_record_mmap, pgoff, T_ULONGLONG, "page offset"),
 134         member_def(perf_record_mmap, filename, T_STRING_INPLACE, "backing store"),
 135         { .name = NULL, },
 136 };
 137
 138 static PyObject *pyrf_mmap_event__repr(struct pyrf_event *pevent)
 139 {
 140         PyObject *ret;
 141         char *s;
 142
 143         if (asprintf(&s, "{ type: mmap, pid: %u, tid: %u, start: %#" PRI_lx64 ", "
 144                          "length: %#" PRI_lx64 ", offset: %#" PRI_lx64 ", "
 145                          "filename: %s }",
 146                      pevent->event.mmap.pid, pevent->event.mmap.tid,
 147                      pevent->event.mmap.start, pevent->event.mmap.len,
 148                      pevent->event.mmap.pgoff, pevent->event.mmap.filename) < 0) {
 149                 ret = PyErr_NoMemory();
 150         } else {
 151                 ret = _PyUnicode_FromString(s);
 152                 free(s);
 153         }
 154         return ret;
 155 }
 156
 157 static PyTypeObject pyrf_mmap_event__type = {
 158         PyVarObject_HEAD_INIT(NULL, 0)
 159         .tp_name        = "perf.mmap_event",
 160         .tp_basicsize   = sizeof(struct pyrf_event),
 161         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 162         .tp_doc         = pyrf_mmap_event__doc,
 163         .tp_members     = pyrf_mmap_event__members,
 164         .tp_repr        = (reprfunc)pyrf_mmap_event__repr,
 165 };
 166
 167 static char pyrf_task_event__doc[] = PyDoc_STR("perf task (fork/exit) event object.");
 168
 169 static PyMemberDef pyrf_task_event__members[] = {
 170         sample_members
 171         member_def(perf_event_header, type, T_UINT, "event type"),
 172         member_def(perf_record_fork, pid, T_UINT, "event pid"),
 173         member_def(perf_record_fork, ppid, T_UINT, "event ppid"),
 174         member_def(perf_record_fork, tid, T_UINT, "event tid"),
 175         member_def(perf_record_fork, ptid, T_UINT, "event ptid"),
 176         member_def(perf_record_fork, time, T_ULONGLONG, "timestamp"),
 177         { .name = NULL, },
 178 };
 179
 180 static PyObject *pyrf_task_event__repr(struct pyrf_event *pevent)
 181 {
 182         return _PyUnicode_FromFormat("{ type: %s, pid: %u, ppid: %u, tid: %u, "
 183                                    "ptid: %u, time: %" PRI_lu64 "}",
 184                                    pevent->event.header.type == PERF_RECORD_FORK ? "fork" : "exit",
 185                                    pevent->event.fork.pid,
 186                                    pevent->event.fork.ppid,
 187                                    pevent->event.fork.tid,
 188                                    pevent->event.fork.ptid,
 189                                    pevent->event.fork.time);
 190 }
 191
 192 static PyTypeObject pyrf_task_event__type = {
 193         PyVarObject_HEAD_INIT(NULL, 0)
 194         .tp_name        = "perf.task_event",
 195         .tp_basicsize   = sizeof(struct pyrf_event),
 196         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 197         .tp_doc         = pyrf_task_event__doc,
 198         .tp_members     = pyrf_task_event__members,
 199         .tp_repr        = (reprfunc)pyrf_task_event__repr,
 200 };
 201
 202 static char pyrf_comm_event__doc[] = PyDoc_STR("perf comm event object.");
 203
 204 static PyMemberDef pyrf_comm_event__members[] = {
 205         sample_members
 206         member_def(perf_event_header, type, T_UINT, "event type"),
 207         member_def(perf_record_comm, pid, T_UINT, "event pid"),
 208         member_def(perf_record_comm, tid, T_UINT, "event tid"),
 209         member_def(perf_record_comm, comm, T_STRING_INPLACE, "process name"),
 210         { .name = NULL, },
 211 };
 212
 213 static PyObject *pyrf_comm_event__repr(struct pyrf_event *pevent)
 214 {
 215         return _PyUnicode_FromFormat("{ type: comm, pid: %u, tid: %u, comm: %s }",
 216                                    pevent->event.comm.pid,
 217                                    pevent->event.comm.tid,
 218                                    pevent->event.comm.comm);
 219 }
 220
 221 static PyTypeObject pyrf_comm_event__type = {
 222         PyVarObject_HEAD_INIT(NULL, 0)
 223         .tp_name        = "perf.comm_event",
 224         .tp_basicsize   = sizeof(struct pyrf_event),
 225         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 226         .tp_doc         = pyrf_comm_event__doc,
 227         .tp_members     = pyrf_comm_event__members,
 228         .tp_repr        = (reprfunc)pyrf_comm_event__repr,
 229 };
 230
 231 static char pyrf_throttle_event__doc[] = PyDoc_STR("perf throttle event object.");
 232
 233 static PyMemberDef pyrf_throttle_event__members[] = {
 234         sample_members
 235         member_def(perf_event_header, type, T_UINT, "event type"),
 236         member_def(perf_record_throttle, time, T_ULONGLONG, "timestamp"),
 237         member_def(perf_record_throttle, id, T_ULONGLONG, "event id"),
 238         member_def(perf_record_throttle, stream_id, T_ULONGLONG, "event stream id"),
 239         { .name = NULL, },
 240 };
 241
 242 static PyObject *pyrf_throttle_event__repr(struct pyrf_event *pevent)
 243 {
 244         struct perf_record_throttle *te = (struct perf_record_throttle *)(&pevent->event.header + 1);
 245
 246         return _PyUnicode_FromFormat("{ type: %sthrottle, time: %" PRI_lu64 ", id: %" PRI_lu64
 247                                    ", stream_id: %" PRI_lu64 " }",
 248                                    pevent->event.header.type == PERF_RECORD_THROTTLE ? "" : "un",
 249                                    te->time, te->id, te->stream_id);
 250 }
 251
 252 static PyTypeObject pyrf_throttle_event__type = {
 253         PyVarObject_HEAD_INIT(NULL, 0)
 254         .tp_name        = "perf.throttle_event",
 255         .tp_basicsize   = sizeof(struct pyrf_event),
 256         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 257         .tp_doc         = pyrf_throttle_event__doc,
 258         .tp_members     = pyrf_throttle_event__members,
 259         .tp_repr        = (reprfunc)pyrf_throttle_event__repr,
 260 };
 261
 262 static char pyrf_lost_event__doc[] = PyDoc_STR("perf lost event object.");
 263
 264 static PyMemberDef pyrf_lost_event__members[] = {
 265         sample_members
 266         member_def(perf_record_lost, id, T_ULONGLONG, "event id"),
 267         member_def(perf_record_lost, lost, T_ULONGLONG, "number of lost events"),
 268         { .name = NULL, },
 269 };
 270
 271 static PyObject *pyrf_lost_event__repr(struct pyrf_event *pevent)
 272 {
 273         PyObject *ret;
 274         char *s;
 275
 276         if (asprintf(&s, "{ type: lost, id: %#" PRI_lx64 ", "
 277                          "lost: %#" PRI_lx64 " }",
 278                      pevent->event.lost.id, pevent->event.lost.lost) < 0) {
 279                 ret = PyErr_NoMemory();
 280         } else {
 281                 ret = _PyUnicode_FromString(s);
 282                 free(s);
 283         }
 284         return ret;
 285 }
 286
 287 static PyTypeObject pyrf_lost_event__type = {
 288         PyVarObject_HEAD_INIT(NULL, 0)
 289         .tp_name        = "perf.lost_event",
 290         .tp_basicsize   = sizeof(struct pyrf_event),
 291         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 292         .tp_doc         = pyrf_lost_event__doc,
 293         .tp_members     = pyrf_lost_event__members,
 294         .tp_repr        = (reprfunc)pyrf_lost_event__repr,
 295 };
 296
 297 static char pyrf_read_event__doc[] = PyDoc_STR("perf read event object.");
 298
 299 static PyMemberDef pyrf_read_event__members[] = {
 300         sample_members
 301         member_def(perf_record_read, pid, T_UINT, "event pid"),
 302         member_def(perf_record_read, tid, T_UINT, "event tid"),
 303         { .name = NULL, },
 304 };
 305
 306 static PyObject *pyrf_read_event__repr(struct pyrf_event *pevent)
 307 {
 308         return _PyUnicode_FromFormat("{ type: read, pid: %u, tid: %u }",
 309                                    pevent->event.read.pid,
 310                                    pevent->event.read.tid);
 311         /*
 312          * FIXME: return the array of read values,
 313          * making this method useful ;-)
 314          */
 315 }
 316
 317 static PyTypeObject pyrf_read_event__type = {
 318         PyVarObject_HEAD_INIT(NULL, 0)
 319         .tp_name        = "perf.read_event",
 320         .tp_basicsize   = sizeof(struct pyrf_event),
 321         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 322         .tp_doc         = pyrf_read_event__doc,
 323         .tp_members     = pyrf_read_event__members,
 324         .tp_repr        = (reprfunc)pyrf_read_event__repr,
 325 };
 326
 327 static char pyrf_sample_event__doc[] = PyDoc_STR("perf sample event object.");
 328
 329 static PyMemberDef pyrf_sample_event__members[] = {
 330         sample_members
 331         member_def(perf_event_header, type, T_UINT, "event type"),
 332         { .name = NULL, },
 333 };
 334
 335 static PyObject *pyrf_sample_event__repr(struct pyrf_event *pevent)
 336 {
 337         PyObject *ret;
 338         char *s;
 339
 340         if (asprintf(&s, "{ type: sample }") < 0) {
 341                 ret = PyErr_NoMemory();
 342         } else {
 343                 ret = _PyUnicode_FromString(s);
 344                 free(s);
 345         }
 346         return ret;
 347 }
 348
 349 static bool is_tracepoint(struct pyrf_event *pevent)
 350 {
 351         return pevent->evsel->core.attr.type == PERF_TYPE_TRACEPOINT;
 352 }
 353
 354 static PyObject*
 355 tracepoint_field(struct pyrf_event *pe, struct tep_format_field *field)
 356 {
 357         struct tep_handle *pevent = field->event->tep;
 358         void *data = pe->sample.raw_data;
 359         PyObject *ret = NULL;
 360         unsigned long long val;
 361         unsigned int offset, len;
 362
 363         if (field->flags & TEP_FIELD_IS_ARRAY) {
 364                 offset = field->offset;
 365                 len    = field->size;
 366                 if (field->flags & TEP_FIELD_IS_DYNAMIC) {
 367                         val     = tep_read_number(pevent, data + offset, len);
 368                         offset  = val;
 369                         len     = offset >> 16;
 370                         offset &= 0xffff;
 371                 }
 372                 if (field->flags & TEP_FIELD_IS_STRING &&
 373                     is_printable_array(data + offset, len)) {
 374                         ret = _PyUnicode_FromString((char *)data + offset);
 375                 } else {
 376                         ret = PyByteArray_FromStringAndSize((const char *) data + offset, len);
 377                         field->flags &= ~TEP_FIELD_IS_STRING;
 378                 }
 379         } else {
 380                 val = tep_read_number(pevent, data + field->offset,
 381                                       field->size);
 382                 if (field->flags & TEP_FIELD_IS_POINTER)
 383                         ret = PyLong_FromUnsignedLong((unsigned long) val);
 384                 else if (field->flags & TEP_FIELD_IS_SIGNED)
 385                         ret = PyLong_FromLong((long) val);
 386                 else
 387                         ret = PyLong_FromUnsignedLong((unsigned long) val);
 388         }
 389
 390         return ret;
 391 }
 392
 393 static PyObject*
 394 get_tracepoint_field(struct pyrf_event *pevent, PyObject *attr_name)
 395 {
 396         const char *str = _PyUnicode_AsString(PyObject_Str(attr_name));
 397         struct evsel *evsel = pevent->evsel;
 398         struct tep_format_field *field;
 399
 400         if (!evsel->tp_format) {
 401                 struct tep_event *tp_format;
 402
 403                 tp_format = trace_event__tp_format_id(evsel->core.attr.config);
 404                 if (!tp_format)
 405                         return NULL;
 406
 407                 evsel->tp_format = tp_format;
 408         }
 409
 410         field = tep_find_any_field(evsel->tp_format, str);
 411         if (!field)
 412                 return NULL;
 413
 414         return tracepoint_field(pevent, field);
 415 }
 416
 417 static PyObject*
 418 pyrf_sample_event__getattro(struct pyrf_event *pevent, PyObject *attr_name)
 419 {
 420         PyObject *obj = NULL;
 421
 422         if (is_tracepoint(pevent))
 423                 obj = get_tracepoint_field(pevent, attr_name);
 424
 425         return obj ?: PyObject_GenericGetAttr((PyObject *) pevent, attr_name);
 426 }
 427
 428 static PyTypeObject pyrf_sample_event__type = {
 429         PyVarObject_HEAD_INIT(NULL, 0)
 430         .tp_name        = "perf.sample_event",
 431         .tp_basicsize   = sizeof(struct pyrf_event),
 432         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 433         .tp_doc         = pyrf_sample_event__doc,
 434         .tp_members     = pyrf_sample_event__members,
 435         .tp_repr        = (reprfunc)pyrf_sample_event__repr,
 436         .tp_getattro    = (getattrofunc) pyrf_sample_event__getattro,
 437 };
 438
 439 static char pyrf_context_switch_event__doc[] = PyDoc_STR("perf context_switch event object.");
 440
 441 static PyMemberDef pyrf_context_switch_event__members[] = {
 442         sample_members
 443         member_def(perf_event_header, type, T_UINT, "event type"),
 444         member_def(perf_record_switch, next_prev_pid, T_UINT, "next/prev pid"),
 445         member_def(perf_record_switch, next_prev_tid, T_UINT, "next/prev tid"),
 446         { .name = NULL, },
 447 };
 448
 449 static PyObject *pyrf_context_switch_event__repr(struct pyrf_event *pevent)
 450 {
 451         PyObject *ret;
 452         char *s;
 453
 454         if (asprintf(&s, "{ type: context_switch, next_prev_pid: %u, next_prev_tid: %u, switch_out: %u }",
 455                      pevent->event.context_switch.next_prev_pid,
 456                      pevent->event.context_switch.next_prev_tid,
 457                      !!(pevent->event.header.misc & PERF_RECORD_MISC_SWITCH_OUT)) < 0) {
 458                 ret = PyErr_NoMemory();
 459         } else {
 460                 ret = _PyUnicode_FromString(s);
 461                 free(s);
 462         }
 463         return ret;
 464 }
 465
 466 static PyTypeObject pyrf_context_switch_event__type = {
 467         PyVarObject_HEAD_INIT(NULL, 0)
 468         .tp_name        = "perf.context_switch_event",
 469         .tp_basicsize   = sizeof(struct pyrf_event),
 470         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 471         .tp_doc         = pyrf_context_switch_event__doc,
 472         .tp_members     = pyrf_context_switch_event__members,
 473         .tp_repr        = (reprfunc)pyrf_context_switch_event__repr,
 474 };
 475
 476 static int pyrf_event__setup_types(void)
 477 {
 478         int err;
 479         pyrf_mmap_event__type.tp_new =
 480         pyrf_task_event__type.tp_new =
 481         pyrf_comm_event__type.tp_new =
 482         pyrf_lost_event__type.tp_new =
 483         pyrf_read_event__type.tp_new =
 484         pyrf_sample_event__type.tp_new =
 485         pyrf_context_switch_event__type.tp_new =
 486         pyrf_throttle_event__type.tp_new = PyType_GenericNew;
 487         err = PyType_Ready(&pyrf_mmap_event__type);
 488         if (err < 0)
 489                 goto out;
 490         err = PyType_Ready(&pyrf_lost_event__type);
 491         if (err < 0)
 492                 goto out;
 493         err = PyType_Ready(&pyrf_task_event__type);
 494         if (err < 0)
 495                 goto out;
 496         err = PyType_Ready(&pyrf_comm_event__type);
 497         if (err < 0)
 498                 goto out;
 499         err = PyType_Ready(&pyrf_throttle_event__type);
 500         if (err < 0)
 501                 goto out;
 502         err = PyType_Ready(&pyrf_read_event__type);
 503         if (err < 0)
 504                 goto out;
 505         err = PyType_Ready(&pyrf_sample_event__type);
 506         if (err < 0)
 507                 goto out;
 508         err = PyType_Ready(&pyrf_context_switch_event__type);
 509         if (err < 0)
 510                 goto out;
 511 out:
 512         return err;
 513 }
 514
 515 static PyTypeObject *pyrf_event__type[] = {
 516         [PERF_RECORD_MMAP]       = &pyrf_mmap_event__type,
 517         [PERF_RECORD_LOST]       = &pyrf_lost_event__type,
 518         [PERF_RECORD_COMM]       = &pyrf_comm_event__type,
 519         [PERF_RECORD_EXIT]       = &pyrf_task_event__type,
 520         [PERF_RECORD_THROTTLE]   = &pyrf_throttle_event__type,
 521         [PERF_RECORD_UNTHROTTLE] = &pyrf_throttle_event__type,
 522         [PERF_RECORD_FORK]       = &pyrf_task_event__type,
 523         [PERF_RECORD_READ]       = &pyrf_read_event__type,
 524         [PERF_RECORD_SAMPLE]     = &pyrf_sample_event__type,
 525         [PERF_RECORD_SWITCH]     = &pyrf_context_switch_event__type,
 526         [PERF_RECORD_SWITCH_CPU_WIDE]  = &pyrf_context_switch_event__type,
 527 };
 528
 529 static PyObject *pyrf_event__new(union perf_event *event)
 530 {
 531         struct pyrf_event *pevent;
 532         PyTypeObject *ptype;
 533
 534         if ((event->header.type < PERF_RECORD_MMAP ||
 535              event->header.type > PERF_RECORD_SAMPLE) &&
 536             !(event->header.type == PERF_RECORD_SWITCH ||
 537               event->header.type == PERF_RECORD_SWITCH_CPU_WIDE))
 538                 return NULL;
 539
 540         ptype = pyrf_event__type[event->header.type];
 541         pevent = PyObject_New(struct pyrf_event, ptype);
 542         if (pevent != NULL)
 543                 memcpy(&pevent->event, event, event->header.size);
 544         return (PyObject *)pevent;
 545 }
 546
 547 struct pyrf_cpu_map {
 548         PyObject_HEAD
 549
 550         struct perf_cpu_map *cpus;
 551 };
 552
 553 static int pyrf_cpu_map__init(struct pyrf_cpu_map *pcpus,
 554                               PyObject *args, PyObject *kwargs)
 555 {
 556         static char *kwlist[] = { "cpustr", NULL };
 557         char *cpustr = NULL;
 558
 559         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|s",
 560                                          kwlist, &cpustr))
 561                 return -1;
 562
 563         pcpus->cpus = perf_cpu_map__new(cpustr);
 564         if (pcpus->cpus == NULL)
 565                 return -1;
 566         return 0;
 567 }
 568
 569 static void pyrf_cpu_map__delete(struct pyrf_cpu_map *pcpus)
 570 {
 571         perf_cpu_map__put(pcpus->cpus);
 572         Py_TYPE(pcpus)->tp_free((PyObject*)pcpus);
 573 }
 574
 575 static Py_ssize_t pyrf_cpu_map__length(PyObject *obj)
 576 {
 577         struct pyrf_cpu_map *pcpus = (void *)obj;
 578
 579         return pcpus->cpus->nr;
 580 }
 581
 582 static PyObject *pyrf_cpu_map__item(PyObject *obj, Py_ssize_t i)
 583 {
 584         struct pyrf_cpu_map *pcpus = (void *)obj;
 585
 586         if (i >= pcpus->cpus->nr)
 587                 return NULL;
 588
 589         return Py_BuildValue("i", pcpus->cpus->map[i]);
 590 }
 591
 592 static PySequenceMethods pyrf_cpu_map__sequence_methods = {
 593         .sq_length = pyrf_cpu_map__length,
 594         .sq_item   = pyrf_cpu_map__item,
 595 };
 596
 597 static char pyrf_cpu_map__doc[] = PyDoc_STR("cpu map object.");
 598
 599 static PyTypeObject pyrf_cpu_map__type = {
 600         PyVarObject_HEAD_INIT(NULL, 0)
 601         .tp_name        = "perf.cpu_map",
 602         .tp_basicsize   = sizeof(struct pyrf_cpu_map),
 603         .tp_dealloc     = (destructor)pyrf_cpu_map__delete,
 604         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 605         .tp_doc         = pyrf_cpu_map__doc,
 606         .tp_as_sequence = &pyrf_cpu_map__sequence_methods,
 607         .tp_init        = (initproc)pyrf_cpu_map__init,
 608 };
 609
 610 static int pyrf_cpu_map__setup_types(void)
 611 {
 612         pyrf_cpu_map__type.tp_new = PyType_GenericNew;
 613         return PyType_Ready(&pyrf_cpu_map__type);
 614 }
 615
 616 struct pyrf_thread_map {
 617         PyObject_HEAD
 618
 619         struct perf_thread_map *threads;
 620 };
 621
 622 static int pyrf_thread_map__init(struct pyrf_thread_map *pthreads,
 623                                  PyObject *args, PyObject *kwargs)
 624 {
 625         static char *kwlist[] = { "pid", "tid", "uid", NULL };
 626         int pid = -1, tid = -1, uid = UINT_MAX;
 627
 628         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|iii",
 629                                          kwlist, &pid, &tid, &uid))
 630                 return -1;
 631
 632         pthreads->threads = thread_map__new(pid, tid, uid);
 633         if (pthreads->threads == NULL)
 634                 return -1;
 635         return 0;
 636 }
 637
 638 static void pyrf_thread_map__delete(struct pyrf_thread_map *pthreads)
 639 {
 640         perf_thread_map__put(pthreads->threads);
 641         Py_TYPE(pthreads)->tp_free((PyObject*)pthreads);
 642 }
 643
 644 static Py_ssize_t pyrf_thread_map__length(PyObject *obj)
 645 {
 646         struct pyrf_thread_map *pthreads = (void *)obj;
 647
 648         return pthreads->threads->nr;
 649 }
 650
 651 static PyObject *pyrf_thread_map__item(PyObject *obj, Py_ssize_t i)
 652 {
 653         struct pyrf_thread_map *pthreads = (void *)obj;
 654
 655         if (i >= pthreads->threads->nr)
 656                 return NULL;
 657
 658         return Py_BuildValue("i", pthreads->threads->map[i]);
 659 }
 660
 661 static PySequenceMethods pyrf_thread_map__sequence_methods = {
 662         .sq_length = pyrf_thread_map__length,
 663         .sq_item   = pyrf_thread_map__item,
 664 };
 665
 666 static char pyrf_thread_map__doc[] = PyDoc_STR("thread map object.");
 667
 668 static PyTypeObject pyrf_thread_map__type = {
 669         PyVarObject_HEAD_INIT(NULL, 0)
 670         .tp_name        = "perf.thread_map",
 671         .tp_basicsize   = sizeof(struct pyrf_thread_map),
 672         .tp_dealloc     = (destructor)pyrf_thread_map__delete,
 673         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 674         .tp_doc         = pyrf_thread_map__doc,
 675         .tp_as_sequence = &pyrf_thread_map__sequence_methods,
 676         .tp_init        = (initproc)pyrf_thread_map__init,
 677 };
 678
 679 static int pyrf_thread_map__setup_types(void)
 680 {
 681         pyrf_thread_map__type.tp_new = PyType_GenericNew;
 682         return PyType_Ready(&pyrf_thread_map__type);
 683 }
 684
 685 struct pyrf_evsel {
 686         PyObject_HEAD
 687
 688         struct evsel evsel;
 689 };
 690
 691 static int pyrf_evsel__init(struct pyrf_evsel *pevsel,
 692                             PyObject *args, PyObject *kwargs)
 693 {
 694         struct perf_event_attr attr = {
 695                 .type = PERF_TYPE_HARDWARE,
 696                 .config = PERF_COUNT_HW_CPU_CYCLES,
 697                 .sample_type = PERF_SAMPLE_PERIOD | PERF_SAMPLE_TID,
 698         };
 699         static char *kwlist[] = {
 700                 "type",
 701                 "config",
 702                 "sample_freq",
 703                 "sample_period",
 704                 "sample_type",
 705                 "read_format",
 706                 "disabled",
 707                 "inherit",
 708                 "pinned",
 709                 "exclusive",
 710                 "exclude_user",
 711                 "exclude_kernel",
 712                 "exclude_hv",
 713                 "exclude_idle",
 714                 "mmap",
 715                 "context_switch",
 716                 "comm",
 717                 "freq",
 718                 "inherit_stat",
 719                 "enable_on_exec",
 720                 "task",
 721                 "watermark",
 722                 "precise_ip",
 723                 "mmap_data",
 724                 "sample_id_all",
 725                 "wakeup_events",
 726                 "bp_type",
 727                 "bp_addr",
 728                 "bp_len",
 729                  NULL
 730         };
 731         u64 sample_period = 0;
 732         u32 disabled = 0,
 733             inherit = 0,
 734             pinned = 0,
 735             exclusive = 0,
 736             exclude_user = 0,
 737             exclude_kernel = 0,
 738             exclude_hv = 0,
 739             exclude_idle = 0,
 740             mmap = 0,
 741             context_switch = 0,
 742             comm = 0,
 743             freq = 1,
 744             inherit_stat = 0,
 745             enable_on_exec = 0,
 746             task = 0,
 747             watermark = 0,
 748             precise_ip = 0,
 749             mmap_data = 0,
 750             sample_id_all = 1;
 751         int idx = 0;
 752
 753         if (!PyArg_ParseTupleAndKeywords(args, kwargs,
 754                                          "|iKiKKiiiiiiiiiiiiiiiiiiiiiiKK", kwlist,
 755                                          &attr.type, &attr.config, &attr.sample_freq,
 756                                          &sample_period, &attr.sample_type,
 757                                          &attr.read_format, &disabled, &inherit,
 758                                          &pinned, &exclusive, &exclude_user,
 759                                          &exclude_kernel, &exclude_hv, &exclude_idle,
 760                                          &mmap, &context_switch, &comm, &freq, &inherit_stat,
 761                                          &enable_on_exec, &task, &watermark,
 762                                          &precise_ip, &mmap_data, &sample_id_all,
 763                                          &attr.wakeup_events, &attr.bp_type,
 764                                          &attr.bp_addr, &attr.bp_len, &idx))
 765                 return -1;
 766
 767         /* union... */
 768         if (sample_period != 0) {
 769                 if (attr.sample_freq != 0)
 770                         return -1; /* FIXME: throw right exception */
 771                 attr.sample_period = sample_period;
 772         }
 773
 774         /* Bitfields */
 775         attr.disabled       = disabled;
 776         attr.inherit        = inherit;
 777         attr.pinned         = pinned;
 778         attr.exclusive      = exclusive;
 779         attr.exclude_user   = exclude_user;
 780         attr.exclude_kernel = exclude_kernel;
 781         attr.exclude_hv     = exclude_hv;
 782         attr.exclude_idle   = exclude_idle;
 783         attr.mmap           = mmap;
 784         attr.context_switch = context_switch;
 785         attr.comm           = comm;
 786         attr.freq           = freq;
 787         attr.inherit_stat   = inherit_stat;
 788         attr.enable_on_exec = enable_on_exec;
 789         attr.task           = task;
 790         attr.watermark      = watermark;
 791         attr.precise_ip     = precise_ip;
 792         attr.mmap_data      = mmap_data;
 793         attr.sample_id_all  = sample_id_all;
 794         attr.size           = sizeof(attr);
 795
 796         evsel__init(&pevsel->evsel, &attr, idx);
 797         return 0;
 798 }
 799
 800 static void pyrf_evsel__delete(struct pyrf_evsel *pevsel)
 801 {
 802         perf_evsel__exit(&pevsel->evsel);
 803         Py_TYPE(pevsel)->tp_free((PyObject*)pevsel);
 804 }
 805
 806 static PyObject *pyrf_evsel__open(struct pyrf_evsel *pevsel,
 807                                   PyObject *args, PyObject *kwargs)
 808 {
 809         struct evsel *evsel = &pevsel->evsel;
 810         struct perf_cpu_map *cpus = NULL;
 811         struct perf_thread_map *threads = NULL;
 812         PyObject *pcpus = NULL, *pthreads = NULL;
 813         int group = 0, inherit = 0;
 814         static char *kwlist[] = { "cpus", "threads", "group", "inherit", NULL };
 815
 816         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|OOii", kwlist,
 817                                          &pcpus, &pthreads, &group, &inherit))
 818                 return NULL;
 819
 820         if (pthreads != NULL)
 821                 threads = ((struct pyrf_thread_map *)pthreads)->threads;
 822
 823         if (pcpus != NULL)
 824                 cpus = ((struct pyrf_cpu_map *)pcpus)->cpus;
 825
 826         evsel->core.attr.inherit = inherit;
 827         /*
 828          * This will group just the fds for this single evsel, to group
 829          * multiple events, use evlist.open().
 830          */
 831         if (evsel__open(evsel, cpus, threads) < 0) {
 832                 PyErr_SetFromErrno(PyExc_OSError);
 833                 return NULL;
 834         }
 835
 836         Py_INCREF(Py_None);
 837         return Py_None;
 838 }
 839
 840 static PyMethodDef pyrf_evsel__methods[] = {
 841         {
 842                 .ml_name  = "open",
 843                 .ml_meth  = (PyCFunction)pyrf_evsel__open,
 844                 .ml_flags = METH_VARARGS | METH_KEYWORDS,
 845                 .ml_doc   = PyDoc_STR("open the event selector file descriptor table.")
 846         },
 847         { .ml_name = NULL, }
 848 };
 849
 850 static char pyrf_evsel__doc[] = PyDoc_STR("perf event selector list object.");
 851
 852 static PyTypeObject pyrf_evsel__type = {
 853         PyVarObject_HEAD_INIT(NULL, 0)
 854         .tp_name        = "perf.evsel",
 855         .tp_basicsize   = sizeof(struct pyrf_evsel),
 856         .tp_dealloc     = (destructor)pyrf_evsel__delete,
 857         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 858         .tp_doc         = pyrf_evsel__doc,
 859         .tp_methods     = pyrf_evsel__methods,
 860         .tp_init        = (initproc)pyrf_evsel__init,
 861 };
 862
 863 static int pyrf_evsel__setup_types(void)
 864 {
 865         pyrf_evsel__type.tp_new = PyType_GenericNew;
 866         return PyType_Ready(&pyrf_evsel__type);
 867 }
 868
 869 struct pyrf_evlist {
 870         PyObject_HEAD
 871
 872         struct evlist evlist;
 873 };
 874
 875 static int pyrf_evlist__init(struct pyrf_evlist *pevlist,
 876                              PyObject *args, PyObject *kwargs __maybe_unused)
 877 {
 878         PyObject *pcpus = NULL, *pthreads = NULL;
 879         struct perf_cpu_map *cpus;
 880         struct perf_thread_map *threads;
 881
 882         if (!PyArg_ParseTuple(args, "OO", &pcpus, &pthreads))
 883                 return -1;
 884
 885         threads = ((struct pyrf_thread_map *)pthreads)->threads;
 886         cpus = ((struct pyrf_cpu_map *)pcpus)->cpus;
 887         evlist__init(&pevlist->evlist, cpus, threads);
 888         return 0;
 889 }
 890
 891 static void pyrf_evlist__delete(struct pyrf_evlist *pevlist)
 892 {
 893         evlist__exit(&pevlist->evlist);
 894         Py_TYPE(pevlist)->tp_free((PyObject*)pevlist);
 895 }
 896
 897 static PyObject *pyrf_evlist__mmap(struct pyrf_evlist *pevlist,
 898                                    PyObject *args, PyObject *kwargs)
 899 {
 900         struct evlist *evlist = &pevlist->evlist;
 901         static char *kwlist[] = { "pages", "overwrite", NULL };
 902         int pages = 128, overwrite = false;
 903
 904         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|ii", kwlist,
 905                                          &pages, &overwrite))
 906                 return NULL;
 907
 908         if (evlist__mmap(evlist, pages) < 0) {
 909                 PyErr_SetFromErrno(PyExc_OSError);
 910                 return NULL;
 911         }
 912
 913         Py_INCREF(Py_None);
 914         return Py_None;
 915 }
 916
 917 static PyObject *pyrf_evlist__poll(struct pyrf_evlist *pevlist,
 918                                    PyObject *args, PyObject *kwargs)
 919 {
 920         struct evlist *evlist = &pevlist->evlist;
 921         static char *kwlist[] = { "timeout", NULL };
 922         int timeout = -1, n;
 923
 924         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|i", kwlist, &timeout))
 925                 return NULL;
 926
 927         n = evlist__poll(evlist, timeout);
 928         if (n < 0) {
 929                 PyErr_SetFromErrno(PyExc_OSError);
 930                 return NULL;
 931         }
 932
 933         return Py_BuildValue("i", n);
 934 }
 935
 936 static PyObject *pyrf_evlist__get_pollfd(struct pyrf_evlist *pevlist,
 937                                          PyObject *args __maybe_unused,
 938                                          PyObject *kwargs __maybe_unused)
 939 {
 940         struct evlist *evlist = &pevlist->evlist;
 941         PyObject *list = PyList_New(0);
 942         int i;
 943
 944         for (i = 0; i < evlist->core.pollfd.nr; ++i) {
 945                 PyObject *file;
 946 #if PY_MAJOR_VERSION < 3
 947                 FILE *fp = fdopen(evlist->core.pollfd.entries[i].fd, "r");
 948
 949                 if (fp == NULL)
 950                         goto free_list;
 951
 952                 file = PyFile_FromFile(fp, "perf", "r", NULL);
 953 #else
 954                 file = PyFile_FromFd(evlist->core.pollfd.entries[i].fd, "perf", "r", -1,
 955                                      NULL, NULL, NULL, 0);
 956 #endif
 957                 if (file == NULL)
 958                         goto free_list;
 959
 960                 if (PyList_Append(list, file) != 0) {
 961                         Py_DECREF(file);
 962                         goto free_list;
 963                 }
 964
 965                 Py_DECREF(file);
 966         }
 967
 968         return list;
 969 free_list:
 970         return PyErr_NoMemory();
 971 }
 972
 973
 974 static PyObject *pyrf_evlist__add(struct pyrf_evlist *pevlist,
 975                                   PyObject *args,
 976                                   PyObject *kwargs __maybe_unused)
 977 {
 978         struct evlist *evlist = &pevlist->evlist;
 979         PyObject *pevsel;
 980         struct evsel *evsel;
 981
 982         if (!PyArg_ParseTuple(args, "O", &pevsel))
 983                 return NULL;
 984
 985         Py_INCREF(pevsel);
 986         evsel = &((struct pyrf_evsel *)pevsel)->evsel;
 987         evsel->idx = evlist->core.nr_entries;
 988         evlist__add(evlist, evsel);
 989
 990         return Py_BuildValue("i", evlist->core.nr_entries);
 991 }
 992
 993 static struct mmap *get_md(struct evlist *evlist, int cpu)
 994 {
 995         int i;
 996
 997         for (i = 0; i < evlist->core.nr_mmaps; i++) {
 998                 struct mmap *md = &evlist->mmap[i];
 999
1000                 if (md->core.cpu == cpu)
1001                         return md;
1002         }
1003
1004         return NULL;
1005 }
1006
1007 static PyObject *pyrf_evlist__read_on_cpu(struct pyrf_evlist *pevlist,
1008                                           PyObject *args, PyObject *kwargs)
1009 {
1010         struct evlist *evlist = &pevlist->evlist;
1011         union perf_event *event;
1012         int sample_id_all = 1, cpu;
1013         static char *kwlist[] = { "cpu", "sample_id_all", NULL };
1014         struct mmap *md;
1015         int err;
1016
1017         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "i|i", kwlist,
1018                                          &cpu, &sample_id_all))
1019                 return NULL;
1020
1021         md = get_md(evlist, cpu);
1022         if (!md)
1023                 return NULL;
1024
1025         if (perf_mmap__read_init(md) < 0)
1026                 goto end;
1027
1028         event = perf_mmap__read_event(md);
1029         if (event != NULL) {
1030                 PyObject *pyevent = pyrf_event__new(event);
1031                 struct pyrf_event *pevent = (struct pyrf_event *)pyevent;
1032                 struct evsel *evsel;
1033
1034                 if (pyevent == NULL)
1035                         return PyErr_NoMemory();
1036
1037                 evsel = perf_evlist__event2evsel(evlist, event);
1038                 if (!evsel) {
1039                         Py_INCREF(Py_None);
1040                         return Py_None;
1041                 }
1042
1043                 pevent->evsel = evsel;
1044
1045                 err = perf_evsel__parse_sample(evsel, event, &pevent->sample);
1046
1047                 /* Consume the even only after we parsed it out. */
1048                 perf_mmap__consume(md);
1049
1050                 if (err)
1051                         return PyErr_Format(PyExc_OSError,
1052                                             "perf: can't parse sample, err=%d", err);
1053                 return pyevent;
1054         }
1055 end:
1056         Py_INCREF(Py_None);
1057         return Py_None;
1058 }
1059
1060 static PyObject *pyrf_evlist__open(struct pyrf_evlist *pevlist,
1061                                    PyObject *args, PyObject *kwargs)
1062 {
1063         struct evlist *evlist = &pevlist->evlist;
1064         int group = 0;
1065         static char *kwlist[] = { "group", NULL };
1066
1067         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|OOii", kwlist, &group))
1068                 return NULL;
1069
1070         if (group)
1071                 perf_evlist__set_leader(evlist);
1072
1073         if (evlist__open(evlist) < 0) {
1074                 PyErr_SetFromErrno(PyExc_OSError);
1075                 return NULL;
1076         }
1077
1078         Py_INCREF(Py_None);
1079         return Py_None;
1080 }
1081
1082 static PyMethodDef pyrf_evlist__methods[] = {
1083         {
1084                 .ml_name  = "mmap",
1085                 .ml_meth  = (PyCFunction)pyrf_evlist__mmap,
1086                 .ml_flags = METH_VARARGS | METH_KEYWORDS,
1087                 .ml_doc   = PyDoc_STR("mmap the file descriptor table.")
1088         },
1089         {
1090                 .ml_name  = "open",
1091                 .ml_meth  = (PyCFunction)pyrf_evlist__open,
1092                 .ml_flags = METH_VARARGS | METH_KEYWORDS,
1093                 .ml_doc   = PyDoc_STR("open the file descriptors.")
1094         },
1095         {
1096                 .ml_name  = "poll",
1097                 .ml_meth  = (PyCFunction)pyrf_evlist__poll,
1098                 .ml_flags = METH_VARARGS | METH_KEYWORDS,
1099                 .ml_doc   = PyDoc_STR("poll the file descriptor table.")
1100         },
1101         {
1102                 .ml_name  = "get_pollfd",
1103                 .ml_meth  = (PyCFunction)pyrf_evlist__get_pollfd,
1104                 .ml_flags = METH_VARARGS | METH_KEYWORDS,
1105                 .ml_doc   = PyDoc_STR("get the poll file descriptor table.")
1106         },
1107         {
1108                 .ml_name  = "add",
1109                 .ml_meth  = (PyCFunction)pyrf_evlist__add,
1110                 .ml_flags = METH_VARARGS | METH_KEYWORDS,
1111                 .ml_doc   = PyDoc_STR("adds an event selector to the list.")
1112         },
1113         {
1114                 .ml_name  = "read_on_cpu",
1115                 .ml_meth  = (PyCFunction)pyrf_evlist__read_on_cpu,
1116                 .ml_flags = METH_VARARGS | METH_KEYWORDS,
1117                 .ml_doc   = PyDoc_STR("reads an event.")
1118         },
1119         { .ml_name = NULL, }
1120 };
1121
1122 static Py_ssize_t pyrf_evlist__length(PyObject *obj)
1123 {
1124         struct pyrf_evlist *pevlist = (void *)obj;
1125
1126         return pevlist->evlist.core.nr_entries;
1127 }
1128
1129 static PyObject *pyrf_evlist__item(PyObject *obj, Py_ssize_t i)
1130 {
1131         struct pyrf_evlist *pevlist = (void *)obj;
1132         struct evsel *pos;
1133
1134         if (i >= pevlist->evlist.core.nr_entries)
1135                 return NULL;
1136
1137         evlist__for_each_entry(&pevlist->evlist, pos) {
1138                 if (i-- == 0)
1139                         break;
1140         }
1141
1142         return Py_BuildValue("O", container_of(pos, struct pyrf_evsel, evsel));
1143 }
1144
1145 static PySequenceMethods pyrf_evlist__sequence_methods = {
1146         .sq_length = pyrf_evlist__length,
1147         .sq_item   = pyrf_evlist__item,
1148 };
1149
1150 static char pyrf_evlist__doc[] = PyDoc_STR("perf event selector list object.");
1151
1152 static PyTypeObject pyrf_evlist__type = {
1153         PyVarObject_HEAD_INIT(NULL, 0)
1154         .tp_name        = "perf.evlist",
1155         .tp_basicsize   = sizeof(struct pyrf_evlist),
1156         .tp_dealloc     = (destructor)pyrf_evlist__delete,
1157         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
1158         .tp_as_sequence = &pyrf_evlist__sequence_methods,
1159         .tp_doc         = pyrf_evlist__doc,
1160         .tp_methods     = pyrf_evlist__methods,
1161         .tp_init        = (initproc)pyrf_evlist__init,
1162 };
1163
1164 static int pyrf_evlist__setup_types(void)
1165 {
1166         pyrf_evlist__type.tp_new = PyType_GenericNew;
1167         return PyType_Ready(&pyrf_evlist__type);
1168 }
1169
1170 #define PERF_CONST(name) { #name, PERF_##name }
1171
1172 static struct {
1173         const char *name;
1174         int         value;
1175 } perf__constants[] = {
1176         PERF_CONST(TYPE_HARDWARE),
1177         PERF_CONST(TYPE_SOFTWARE),
1178         PERF_CONST(TYPE_TRACEPOINT),
1179         PERF_CONST(TYPE_HW_CACHE),
1180         PERF_CONST(TYPE_RAW),
1181         PERF_CONST(TYPE_BREAKPOINT),
1182
1183         PERF_CONST(COUNT_HW_CPU_CYCLES),
1184         PERF_CONST(COUNT_HW_INSTRUCTIONS),
1185         PERF_CONST(COUNT_HW_CACHE_REFERENCES),
1186         PERF_CONST(COUNT_HW_CACHE_MISSES),
1187         PERF_CONST(COUNT_HW_BRANCH_INSTRUCTIONS),
1188         PERF_CONST(COUNT_HW_BRANCH_MISSES),
1189         PERF_CONST(COUNT_HW_BUS_CYCLES),
1190         PERF_CONST(COUNT_HW_CACHE_L1D),
1191         PERF_CONST(COUNT_HW_CACHE_L1I),
1192         PERF_CONST(COUNT_HW_CACHE_LL),
1193         PERF_CONST(COUNT_HW_CACHE_DTLB),
1194         PERF_CONST(COUNT_HW_CACHE_ITLB),
1195         PERF_CONST(COUNT_HW_CACHE_BPU),
1196         PERF_CONST(COUNT_HW_CACHE_OP_READ),
1197         PERF_CONST(COUNT_HW_CACHE_OP_WRITE),
1198         PERF_CONST(COUNT_HW_CACHE_OP_PREFETCH),
1199         PERF_CONST(COUNT_HW_CACHE_RESULT_ACCESS),
1200         PERF_CONST(COUNT_HW_CACHE_RESULT_MISS),
1201
1202         PERF_CONST(COUNT_HW_STALLED_CYCLES_FRONTEND),
1203         PERF_CONST(COUNT_HW_STALLED_CYCLES_BACKEND),
1204
1205         PERF_CONST(COUNT_SW_CPU_CLOCK),
1206         PERF_CONST(COUNT_SW_TASK_CLOCK),
1207         PERF_CONST(COUNT_SW_PAGE_FAULTS),
1208         PERF_CONST(COUNT_SW_CONTEXT_SWITCHES),
1209         PERF_CONST(COUNT_SW_CPU_MIGRATIONS),
1210         PERF_CONST(COUNT_SW_PAGE_FAULTS_MIN),
1211         PERF_CONST(COUNT_SW_PAGE_FAULTS_MAJ),
1212         PERF_CONST(COUNT_SW_ALIGNMENT_FAULTS),
1213         PERF_CONST(COUNT_SW_EMULATION_FAULTS),
1214         PERF_CONST(COUNT_SW_DUMMY),
1215
1216         PERF_CONST(SAMPLE_IP),
1217         PERF_CONST(SAMPLE_TID),
1218         PERF_CONST(SAMPLE_TIME),
1219         PERF_CONST(SAMPLE_ADDR),
1220         PERF_CONST(SAMPLE_READ),
1221         PERF_CONST(SAMPLE_CALLCHAIN),
1222         PERF_CONST(SAMPLE_ID),
1223         PERF_CONST(SAMPLE_CPU),
1224         PERF_CONST(SAMPLE_PERIOD),
1225         PERF_CONST(SAMPLE_STREAM_ID),
1226         PERF_CONST(SAMPLE_RAW),
1227
1228         PERF_CONST(FORMAT_TOTAL_TIME_ENABLED),
1229         PERF_CONST(FORMAT_TOTAL_TIME_RUNNING),
1230         PERF_CONST(FORMAT_ID),
1231         PERF_CONST(FORMAT_GROUP),
1232
1233         PERF_CONST(RECORD_MMAP),
1234         PERF_CONST(RECORD_LOST),
1235         PERF_CONST(RECORD_COMM),
1236         PERF_CONST(RECORD_EXIT),
1237         PERF_CONST(RECORD_THROTTLE),
1238         PERF_CONST(RECORD_UNTHROTTLE),
1239         PERF_CONST(RECORD_FORK),
1240         PERF_CONST(RECORD_READ),
1241         PERF_CONST(RECORD_SAMPLE),
1242         PERF_CONST(RECORD_MMAP2),
1243         PERF_CONST(RECORD_AUX),
1244         PERF_CONST(RECORD_ITRACE_START),
1245         PERF_CONST(RECORD_LOST_SAMPLES),
1246         PERF_CONST(RECORD_SWITCH),
1247         PERF_CONST(RECORD_SWITCH_CPU_WIDE),
1248
1249         PERF_CONST(RECORD_MISC_SWITCH_OUT),
1250         { .name = NULL, },
1251 };
1252
1253 static PyObject *pyrf__tracepoint(struct pyrf_evsel *pevsel,
1254                                   PyObject *args, PyObject *kwargs)
1255 {
1256         struct tep_event *tp_format;
1257         static char *kwlist[] = { "sys", "name", NULL };
1258         char *sys  = NULL;
1259         char *name = NULL;
1260
1261         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|ss", kwlist,
1262                                          &sys, &name))
1263                 return NULL;
1264
1265         tp_format = trace_event__tp_format(sys, name);
1266         if (IS_ERR(tp_format))
1267                 return _PyLong_FromLong(-1);
1268
1269         return _PyLong_FromLong(tp_format->id);
1270 }
1271
1272 static PyMethodDef perf__methods[] = {
1273         {
1274                 .ml_name  = "tracepoint",
1275                 .ml_meth  = (PyCFunction) pyrf__tracepoint,
1276                 .ml_flags = METH_VARARGS | METH_KEYWORDS,
1277                 .ml_doc   = PyDoc_STR("Get tracepoint config.")
1278         },
1279         { .ml_name = NULL, }
1280 };
1281
1282 #if PY_MAJOR_VERSION < 3
1283 PyMODINIT_FUNC initperf(void)
1284 #else
1285 PyMODINIT_FUNC PyInit_perf(void)
1286 #endif
1287 {
1288         PyObject *obj;
1289         int i;
1290         PyObject *dict;
1291 #if PY_MAJOR_VERSION < 3
1292         PyObject *module = Py_InitModule("perf", perf__methods);
1293 #else
1294         static struct PyModuleDef moduledef = {
1295                 PyModuleDef_HEAD_INIT,
1296                 "perf",                 /* m_name */
1297                 "",                     /* m_doc */
1298                 -1,                     /* m_size */
1299                 perf__methods,          /* m_methods */
1300                 NULL,                   /* m_reload */
1301                 NULL,                   /* m_traverse */
1302                 NULL,                   /* m_clear */
1303                 NULL,                   /* m_free */
1304         };
1305         PyObject *module = PyModule_Create(&moduledef);
1306 #endif
1307
1308         if (module == NULL ||
1309             pyrf_event__setup_types() < 0 ||
1310             pyrf_evlist__setup_types() < 0 ||
1311             pyrf_evsel__setup_types() < 0 ||
1312             pyrf_thread_map__setup_types() < 0 ||
1313             pyrf_cpu_map__setup_types() < 0)
1314 #if PY_MAJOR_VERSION < 3
1315                 return;
1316 #else
1317                 return module;
1318 #endif
1319
1320         /* The page_size is placed in util object. */
1321         page_size = sysconf(_SC_PAGE_SIZE);
1322
1323         Py_INCREF(&pyrf_evlist__type);
1324         PyModule_AddObject(module, "evlist", (PyObject*)&pyrf_evlist__type);
1325
1326         Py_INCREF(&pyrf_evsel__type);
1327         PyModule_AddObject(module, "evsel", (PyObject*)&pyrf_evsel__type);
1328
1329         Py_INCREF(&pyrf_mmap_event__type);
1330         PyModule_AddObject(module, "mmap_event", (PyObject *)&pyrf_mmap_event__type);
1331
1332         Py_INCREF(&pyrf_lost_event__type);
1333         PyModule_AddObject(module, "lost_event", (PyObject *)&pyrf_lost_event__type);
1334
1335         Py_INCREF(&pyrf_comm_event__type);
1336         PyModule_AddObject(module, "comm_event", (PyObject *)&pyrf_comm_event__type);
1337
1338         Py_INCREF(&pyrf_task_event__type);
1339         PyModule_AddObject(module, "task_event", (PyObject *)&pyrf_task_event__type);
1340
1341         Py_INCREF(&pyrf_throttle_event__type);
1342         PyModule_AddObject(module, "throttle_event", (PyObject *)&pyrf_throttle_event__type);
1343
1344         Py_INCREF(&pyrf_task_event__type);
1345         PyModule_AddObject(module, "task_event", (PyObject *)&pyrf_task_event__type);
1346
1347         Py_INCREF(&pyrf_read_event__type);
1348         PyModule_AddObject(module, "read_event", (PyObject *)&pyrf_read_event__type);
1349
1350         Py_INCREF(&pyrf_sample_event__type);
1351         PyModule_AddObject(module, "sample_event", (PyObject *)&pyrf_sample_event__type);
1352
1353         Py_INCREF(&pyrf_context_switch_event__type);
1354         PyModule_AddObject(module, "switch_event", (PyObject *)&pyrf_context_switch_event__type);
1355
1356         Py_INCREF(&pyrf_thread_map__type);
1357         PyModule_AddObject(module, "thread_map", (PyObject*)&pyrf_thread_map__type);
1358
1359         Py_INCREF(&pyrf_cpu_map__type);
1360         PyModule_AddObject(module, "cpu_map", (PyObject*)&pyrf_cpu_map__type);
1361
1362         dict = PyModule_GetDict(module);
1363         if (dict == NULL)
1364                 goto error;
1365
1366         for (i = 0; perf__constants[i].name != NULL; i++) {
1367                 obj = _PyLong_FromLong(perf__constants[i].value);
1368                 if (obj == NULL)
1369                         goto error;
1370                 PyDict_SetItemString(dict, perf__constants[i].name, obj);
1371                 Py_DECREF(obj);
1372         }
1373
1374 error:
1375         if (PyErr_Occurred())
1376                 PyErr_SetString(PyExc_ImportError, "perf: Init failed!");
1377 #if PY_MAJOR_VERSION >= 3
1378         return module;
1379 #endif
1380 }
1381
1382 /*
1383  * Dummy, to avoid dragging all the test_attr infrastructure in the python
1384  * binding.
1385  */
1386 void test_attr__open(struct perf_event_attr *attr, pid_t pid, int cpu,
1387                      int fd, int group_fd, unsigned long flags)
1388 {
1389 }