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