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 "evlist.h"
   8 #include "callchain.h"
   9 #include "evsel.h"
  10 #include "event.h"
  11 #include "cpumap.h"
  12 #include "print_binary.h"
  13 #include "thread_map.h"
  14 #include "mmap.h"
  15 #include "util.h"
  16
  17 #if PY_MAJOR_VERSION < 3
  18 #define _PyUnicode_FromString(arg) \
  19   PyString_FromString(arg)
  20 #define _PyUnicode_AsString(arg) \
  21   PyString_AsString(arg)
  22 #define _PyUnicode_FromFormat(...) \
  23   PyString_FromFormat(__VA_ARGS__)
  24 #define _PyLong_FromLong(arg) \
  25   PyInt_FromLong(arg)
  26
  27 #else
  28
  29 #define _PyUnicode_FromString(arg) \
  30   PyUnicode_FromString(arg)
  31 #define _PyUnicode_FromFormat(...) \
  32   PyUnicode_FromFormat(__VA_ARGS__)
  33 #define _PyLong_FromLong(arg) \
  34   PyLong_FromLong(arg)
  35 #endif
  36
  37 #ifndef Py_TYPE
  38 #define Py_TYPE(ob) (((PyObject*)(ob))->ob_type)
  39 #endif
  40
  41 /*
  42  * Provide these two so that we don't have to link against callchain.c and
  43  * start dragging hist.c, etc.
  44  */
  45 struct callchain_param callchain_param;
  46
  47 int parse_callchain_record(const char *arg __maybe_unused,
  48                            struct callchain_param *param __maybe_unused)
  49 {
  50         return 0;
  51 }
  52
  53 /*
  54  * Support debug printing even though util/debug.c is not linked.  That means
  55  * implementing 'verbose' and 'eprintf'.
  56  */
  57 int verbose;
  58
  59 int eprintf(int level, int var, const char *fmt, ...)
  60 {
  61         va_list args;
  62         int ret = 0;
  63
  64         if (var >= level) {
  65                 va_start(args, fmt);
  66                 ret = vfprintf(stderr, fmt, args);
  67                 va_end(args);
  68         }
  69
  70         return ret;
  71 }
  72
  73 /* Define PyVarObject_HEAD_INIT for python 2.5 */
  74 #ifndef PyVarObject_HEAD_INIT
  75 # define PyVarObject_HEAD_INIT(type, size) PyObject_HEAD_INIT(type) size,
  76 #endif
  77
  78 #if PY_MAJOR_VERSION < 3
  79 PyMODINIT_FUNC initperf(void);
  80 #else
  81 PyMODINIT_FUNC PyInit_perf(void);
  82 #endif
  83
  84 #define member_def(type, member, ptype, help) \
  85         { #member, ptype, \
  86           offsetof(struct pyrf_event, event) + offsetof(struct type, member), \
  87           0, help }
  88
  89 #define sample_member_def(name, member, ptype, help) \
  90         { #name, ptype, \
  91           offsetof(struct pyrf_event, sample) + offsetof(struct perf_sample, member), \
  92           0, help }
  93
  94 struct pyrf_event {
  95         PyObject_HEAD
  96         struct perf_evsel *evsel;
  97         struct perf_sample sample;
  98         union perf_event   event;
  99 };
 100
 101 #define sample_members \
 102         sample_member_def(sample_ip, ip, T_ULONGLONG, "event type"),                     \
 103         sample_member_def(sample_pid, pid, T_INT, "event pid"),                  \
 104         sample_member_def(sample_tid, tid, T_INT, "event tid"),                  \
 105         sample_member_def(sample_time, time, T_ULONGLONG, "event timestamp"),            \
 106         sample_member_def(sample_addr, addr, T_ULONGLONG, "event addr"),                 \
 107         sample_member_def(sample_id, id, T_ULONGLONG, "event id"),                       \
 108         sample_member_def(sample_stream_id, stream_id, T_ULONGLONG, "event stream id"), \
 109         sample_member_def(sample_period, period, T_ULONGLONG, "event period"),           \
 110         sample_member_def(sample_cpu, cpu, T_UINT, "event cpu"),
 111
 112 static char pyrf_mmap_event__doc[] = PyDoc_STR("perf mmap event object.");
 113
 114 static PyMemberDef pyrf_mmap_event__members[] = {
 115         sample_members
 116         member_def(perf_event_header, type, T_UINT, "event type"),
 117         member_def(perf_event_header, misc, T_UINT, "event misc"),
 118         member_def(mmap_event, pid, T_UINT, "event pid"),
 119         member_def(mmap_event, tid, T_UINT, "event tid"),
 120         member_def(mmap_event, start, T_ULONGLONG, "start of the map"),
 121         member_def(mmap_event, len, T_ULONGLONG, "map length"),
 122         member_def(mmap_event, pgoff, T_ULONGLONG, "page offset"),
 123         member_def(mmap_event, filename, T_STRING_INPLACE, "backing store"),
 124         { .name = NULL, },
 125 };
 126
 127 static PyObject *pyrf_mmap_event__repr(struct pyrf_event *pevent)
 128 {
 129         PyObject *ret;
 130         char *s;
 131
 132         if (asprintf(&s, "{ type: mmap, pid: %u, tid: %u, start: %#" PRIx64 ", "
 133                          "length: %#" PRIx64 ", offset: %#" PRIx64 ", "
 134                          "filename: %s }",
 135                      pevent->event.mmap.pid, pevent->event.mmap.tid,
 136                      pevent->event.mmap.start, pevent->event.mmap.len,
 137                      pevent->event.mmap.pgoff, pevent->event.mmap.filename) < 0) {
 138                 ret = PyErr_NoMemory();
 139         } else {
 140                 ret = _PyUnicode_FromString(s);
 141                 free(s);
 142         }
 143         return ret;
 144 }
 145
 146 static PyTypeObject pyrf_mmap_event__type = {
 147         PyVarObject_HEAD_INIT(NULL, 0)
 148         .tp_name        = "perf.mmap_event",
 149         .tp_basicsize   = sizeof(struct pyrf_event),
 150         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 151         .tp_doc         = pyrf_mmap_event__doc,
 152         .tp_members     = pyrf_mmap_event__members,
 153         .tp_repr        = (reprfunc)pyrf_mmap_event__repr,
 154 };
 155
 156 static char pyrf_task_event__doc[] = PyDoc_STR("perf task (fork/exit) event object.");
 157
 158 static PyMemberDef pyrf_task_event__members[] = {
 159         sample_members
 160         member_def(perf_event_header, type, T_UINT, "event type"),
 161         member_def(fork_event, pid, T_UINT, "event pid"),
 162         member_def(fork_event, ppid, T_UINT, "event ppid"),
 163         member_def(fork_event, tid, T_UINT, "event tid"),
 164         member_def(fork_event, ptid, T_UINT, "event ptid"),
 165         member_def(fork_event, time, T_ULONGLONG, "timestamp"),
 166         { .name = NULL, },
 167 };
 168
 169 static PyObject *pyrf_task_event__repr(struct pyrf_event *pevent)
 170 {
 171         return _PyUnicode_FromFormat("{ type: %s, pid: %u, ppid: %u, tid: %u, "
 172                                    "ptid: %u, time: %" PRIu64 "}",
 173                                    pevent->event.header.type == PERF_RECORD_FORK ? "fork" : "exit",
 174                                    pevent->event.fork.pid,
 175                                    pevent->event.fork.ppid,
 176                                    pevent->event.fork.tid,
 177                                    pevent->event.fork.ptid,
 178                                    pevent->event.fork.time);
 179 }
 180
 181 static PyTypeObject pyrf_task_event__type = {
 182         PyVarObject_HEAD_INIT(NULL, 0)
 183         .tp_name        = "perf.task_event",
 184         .tp_basicsize   = sizeof(struct pyrf_event),
 185         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 186         .tp_doc         = pyrf_task_event__doc,
 187         .tp_members     = pyrf_task_event__members,
 188         .tp_repr        = (reprfunc)pyrf_task_event__repr,
 189 };
 190
 191 static char pyrf_comm_event__doc[] = PyDoc_STR("perf comm event object.");
 192
 193 static PyMemberDef pyrf_comm_event__members[] = {
 194         sample_members
 195         member_def(perf_event_header, type, T_UINT, "event type"),
 196         member_def(comm_event, pid, T_UINT, "event pid"),
 197         member_def(comm_event, tid, T_UINT, "event tid"),
 198         member_def(comm_event, comm, T_STRING_INPLACE, "process name"),
 199         { .name = NULL, },
 200 };
 201
 202 static PyObject *pyrf_comm_event__repr(struct pyrf_event *pevent)
 203 {
 204         return _PyUnicode_FromFormat("{ type: comm, pid: %u, tid: %u, comm: %s }",
 205                                    pevent->event.comm.pid,
 206                                    pevent->event.comm.tid,
 207                                    pevent->event.comm.comm);
 208 }
 209
 210 static PyTypeObject pyrf_comm_event__type = {
 211         PyVarObject_HEAD_INIT(NULL, 0)
 212         .tp_name        = "perf.comm_event",
 213         .tp_basicsize   = sizeof(struct pyrf_event),
 214         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 215         .tp_doc         = pyrf_comm_event__doc,
 216         .tp_members     = pyrf_comm_event__members,
 217         .tp_repr        = (reprfunc)pyrf_comm_event__repr,
 218 };
 219
 220 static char pyrf_throttle_event__doc[] = PyDoc_STR("perf throttle event object.");
 221
 222 static PyMemberDef pyrf_throttle_event__members[] = {
 223         sample_members
 224         member_def(perf_event_header, type, T_UINT, "event type"),
 225         member_def(throttle_event, time, T_ULONGLONG, "timestamp"),
 226         member_def(throttle_event, id, T_ULONGLONG, "event id"),
 227         member_def(throttle_event, stream_id, T_ULONGLONG, "event stream id"),
 228         { .name = NULL, },
 229 };
 230
 231 static PyObject *pyrf_throttle_event__repr(struct pyrf_event *pevent)
 232 {
 233         struct throttle_event *te = (struct throttle_event *)(&pevent->event.header + 1);
 234
 235         return _PyUnicode_FromFormat("{ type: %sthrottle, time: %" PRIu64 ", id: %" PRIu64
 236                                    ", stream_id: %" PRIu64 " }",
 237                                    pevent->event.header.type == PERF_RECORD_THROTTLE ? "" : "un",
 238                                    te->time, te->id, te->stream_id);
 239 }
 240
 241 static PyTypeObject pyrf_throttle_event__type = {
 242         PyVarObject_HEAD_INIT(NULL, 0)
 243         .tp_name        = "perf.throttle_event",
 244         .tp_basicsize   = sizeof(struct pyrf_event),
 245         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 246         .tp_doc         = pyrf_throttle_event__doc,
 247         .tp_members     = pyrf_throttle_event__members,
 248         .tp_repr        = (reprfunc)pyrf_throttle_event__repr,
 249 };
 250
 251 static char pyrf_lost_event__doc[] = PyDoc_STR("perf lost event object.");
 252
 253 static PyMemberDef pyrf_lost_event__members[] = {
 254         sample_members
 255         member_def(lost_event, id, T_ULONGLONG, "event id"),
 256         member_def(lost_event, lost, T_ULONGLONG, "number of lost events"),
 257         { .name = NULL, },
 258 };
 259
 260 static PyObject *pyrf_lost_event__repr(struct pyrf_event *pevent)
 261 {
 262         PyObject *ret;
 263         char *s;
 264
 265         if (asprintf(&s, "{ type: lost, id: %#" PRIx64 ", "
 266                          "lost: %#" PRIx64 " }",
 267                      pevent->event.lost.id, pevent->event.lost.lost) < 0) {
 268                 ret = PyErr_NoMemory();
 269         } else {
 270                 ret = _PyUnicode_FromString(s);
 271                 free(s);
 272         }
 273         return ret;
 274 }
 275
 276 static PyTypeObject pyrf_lost_event__type = {
 277         PyVarObject_HEAD_INIT(NULL, 0)
 278         .tp_name        = "perf.lost_event",
 279         .tp_basicsize   = sizeof(struct pyrf_event),
 280         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 281         .tp_doc         = pyrf_lost_event__doc,
 282         .tp_members     = pyrf_lost_event__members,
 283         .tp_repr        = (reprfunc)pyrf_lost_event__repr,
 284 };
 285
 286 static char pyrf_read_event__doc[] = PyDoc_STR("perf read event object.");
 287
 288 static PyMemberDef pyrf_read_event__members[] = {
 289         sample_members
 290         member_def(read_event, pid, T_UINT, "event pid"),
 291         member_def(read_event, tid, T_UINT, "event tid"),
 292         { .name = NULL, },
 293 };
 294
 295 static PyObject *pyrf_read_event__repr(struct pyrf_event *pevent)
 296 {
 297         return _PyUnicode_FromFormat("{ type: read, pid: %u, tid: %u }",
 298                                    pevent->event.read.pid,
 299                                    pevent->event.read.tid);
 300         /*
 301          * FIXME: return the array of read values,
 302          * making this method useful ;-)
 303          */
 304 }
 305
 306 static PyTypeObject pyrf_read_event__type = {
 307         PyVarObject_HEAD_INIT(NULL, 0)
 308         .tp_name        = "perf.read_event",
 309         .tp_basicsize   = sizeof(struct pyrf_event),
 310         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 311         .tp_doc         = pyrf_read_event__doc,
 312         .tp_members     = pyrf_read_event__members,
 313         .tp_repr        = (reprfunc)pyrf_read_event__repr,
 314 };
 315
 316 static char pyrf_sample_event__doc[] = PyDoc_STR("perf sample event object.");
 317
 318 static PyMemberDef pyrf_sample_event__members[] = {
 319         sample_members
 320         member_def(perf_event_header, type, T_UINT, "event type"),
 321         { .name = NULL, },
 322 };
 323
 324 static PyObject *pyrf_sample_event__repr(struct pyrf_event *pevent)
 325 {
 326         PyObject *ret;
 327         char *s;
 328
 329         if (asprintf(&s, "{ type: sample }") < 0) {
 330                 ret = PyErr_NoMemory();
 331         } else {
 332                 ret = _PyUnicode_FromString(s);
 333                 free(s);
 334         }
 335         return ret;
 336 }
 337
 338 static bool is_tracepoint(struct pyrf_event *pevent)
 339 {
 340         return pevent->evsel->attr.type == PERF_TYPE_TRACEPOINT;
 341 }
 342
 343 static PyObject*
 344 tracepoint_field(struct pyrf_event *pe, struct tep_format_field *field)
 345 {
 346         struct tep_handle *pevent = field->event->tep;
 347         void *data = pe->sample.raw_data;
 348         PyObject *ret = NULL;
 349         unsigned long long val;
 350         unsigned int offset, len;
 351
 352         if (field->flags & TEP_FIELD_IS_ARRAY) {
 353                 offset = field->offset;
 354                 len    = field->size;
 355                 if (field->flags & TEP_FIELD_IS_DYNAMIC) {
 356                         val     = tep_read_number(pevent, data + offset, len);
 357                         offset  = val;
 358                         len     = offset >> 16;
 359                         offset &= 0xffff;
 360                 }
 361                 if (field->flags & TEP_FIELD_IS_STRING &&
 362                     is_printable_array(data + offset, len)) {
 363                         ret = _PyUnicode_FromString((char *)data + offset);
 364                 } else {
 365                         ret = PyByteArray_FromStringAndSize((const char *) data + offset, len);
 366                         field->flags &= ~TEP_FIELD_IS_STRING;
 367                 }
 368         } else {
 369                 val = tep_read_number(pevent, data + field->offset,
 370                                       field->size);
 371                 if (field->flags & TEP_FIELD_IS_POINTER)
 372                         ret = PyLong_FromUnsignedLong((unsigned long) val);
 373                 else if (field->flags & TEP_FIELD_IS_SIGNED)
 374                         ret = PyLong_FromLong((long) val);
 375                 else
 376                         ret = PyLong_FromUnsignedLong((unsigned long) val);
 377         }
 378
 379         return ret;
 380 }
 381
 382 static PyObject*
 383 get_tracepoint_field(struct pyrf_event *pevent, PyObject *attr_name)
 384 {
 385         const char *str = _PyUnicode_AsString(PyObject_Str(attr_name));
 386         struct perf_evsel *evsel = pevent->evsel;
 387         struct tep_format_field *field;
 388
 389         if (!evsel->tp_format) {
 390                 struct tep_event *tp_format;
 391
 392                 tp_format = trace_event__tp_format_id(evsel->attr.config);
 393                 if (!tp_format)
 394                         return NULL;
 395
 396                 evsel->tp_format = tp_format;
 397         }
 398
 399         field = tep_find_any_field(evsel->tp_format, str);
 400         if (!field)
 401                 return NULL;
 402
 403         return tracepoint_field(pevent, field);
 404 }
 405
 406 static PyObject*
 407 pyrf_sample_event__getattro(struct pyrf_event *pevent, PyObject *attr_name)
 408 {
 409         PyObject *obj = NULL;
 410
 411         if (is_tracepoint(pevent))
 412                 obj = get_tracepoint_field(pevent, attr_name);
 413
 414         return obj ?: PyObject_GenericGetAttr((PyObject *) pevent, attr_name);
 415 }
 416
 417 static PyTypeObject pyrf_sample_event__type = {
 418         PyVarObject_HEAD_INIT(NULL, 0)
 419         .tp_name        = "perf.sample_event",
 420         .tp_basicsize   = sizeof(struct pyrf_event),
 421         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 422         .tp_doc         = pyrf_sample_event__doc,
 423         .tp_members     = pyrf_sample_event__members,
 424         .tp_repr        = (reprfunc)pyrf_sample_event__repr,
 425         .tp_getattro    = (getattrofunc) pyrf_sample_event__getattro,
 426 };
 427
 428 static char pyrf_context_switch_event__doc[] = PyDoc_STR("perf context_switch event object.");
 429
 430 static PyMemberDef pyrf_context_switch_event__members[] = {
 431         sample_members
 432         member_def(perf_event_header, type, T_UINT, "event type"),
 433         member_def(context_switch_event, next_prev_pid, T_UINT, "next/prev pid"),
 434         member_def(context_switch_event, next_prev_tid, T_UINT, "next/prev tid"),
 435         { .name = NULL, },
 436 };
 437
 438 static PyObject *pyrf_context_switch_event__repr(struct pyrf_event *pevent)
 439 {
 440         PyObject *ret;
 441         char *s;
 442
 443         if (asprintf(&s, "{ type: context_switch, next_prev_pid: %u, next_prev_tid: %u, switch_out: %u }",
 444                      pevent->event.context_switch.next_prev_pid,
 445                      pevent->event.context_switch.next_prev_tid,
 446                      !!(pevent->event.header.misc & PERF_RECORD_MISC_SWITCH_OUT)) < 0) {
 447                 ret = PyErr_NoMemory();
 448         } else {
 449                 ret = _PyUnicode_FromString(s);
 450                 free(s);
 451         }
 452         return ret;
 453 }
 454
 455 static PyTypeObject pyrf_context_switch_event__type = {
 456         PyVarObject_HEAD_INIT(NULL, 0)
 457         .tp_name        = "perf.context_switch_event",
 458         .tp_basicsize   = sizeof(struct pyrf_event),
 459         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 460         .tp_doc         = pyrf_context_switch_event__doc,
 461         .tp_members     = pyrf_context_switch_event__members,
 462         .tp_repr        = (reprfunc)pyrf_context_switch_event__repr,
 463 };
 464
 465 static int pyrf_event__setup_types(void)
 466 {
 467         int err;
 468         pyrf_mmap_event__type.tp_new =
 469         pyrf_task_event__type.tp_new =
 470         pyrf_comm_event__type.tp_new =
 471         pyrf_lost_event__type.tp_new =
 472         pyrf_read_event__type.tp_new =
 473         pyrf_sample_event__type.tp_new =
 474         pyrf_context_switch_event__type.tp_new =
 475         pyrf_throttle_event__type.tp_new = PyType_GenericNew;
 476         err = PyType_Ready(&pyrf_mmap_event__type);
 477         if (err < 0)
 478                 goto out;
 479         err = PyType_Ready(&pyrf_lost_event__type);
 480         if (err < 0)
 481                 goto out;
 482         err = PyType_Ready(&pyrf_task_event__type);
 483         if (err < 0)
 484                 goto out;
 485         err = PyType_Ready(&pyrf_comm_event__type);
 486         if (err < 0)
 487                 goto out;
 488         err = PyType_Ready(&pyrf_throttle_event__type);
 489         if (err < 0)
 490                 goto out;
 491         err = PyType_Ready(&pyrf_read_event__type);
 492         if (err < 0)
 493                 goto out;
 494         err = PyType_Ready(&pyrf_sample_event__type);
 495         if (err < 0)
 496                 goto out;
 497         err = PyType_Ready(&pyrf_context_switch_event__type);
 498         if (err < 0)
 499                 goto out;
 500 out:
 501         return err;
 502 }
 503
 504 static PyTypeObject *pyrf_event__type[] = {
 505         [PERF_RECORD_MMAP]       = &pyrf_mmap_event__type,
 506         [PERF_RECORD_LOST]       = &pyrf_lost_event__type,
 507         [PERF_RECORD_COMM]       = &pyrf_comm_event__type,
 508         [PERF_RECORD_EXIT]       = &pyrf_task_event__type,
 509         [PERF_RECORD_THROTTLE]   = &pyrf_throttle_event__type,
 510         [PERF_RECORD_UNTHROTTLE] = &pyrf_throttle_event__type,
 511         [PERF_RECORD_FORK]       = &pyrf_task_event__type,
 512         [PERF_RECORD_READ]       = &pyrf_read_event__type,
 513         [PERF_RECORD_SAMPLE]     = &pyrf_sample_event__type,
 514         [PERF_RECORD_SWITCH]     = &pyrf_context_switch_event__type,
 515         [PERF_RECORD_SWITCH_CPU_WIDE]  = &pyrf_context_switch_event__type,
 516 };
 517
 518 static PyObject *pyrf_event__new(union perf_event *event)
 519 {
 520         struct pyrf_event *pevent;
 521         PyTypeObject *ptype;
 522
 523         if ((event->header.type < PERF_RECORD_MMAP ||
 524              event->header.type > PERF_RECORD_SAMPLE) &&
 525             !(event->header.type == PERF_RECORD_SWITCH ||
 526               event->header.type == PERF_RECORD_SWITCH_CPU_WIDE))
 527                 return NULL;
 528
 529         ptype = pyrf_event__type[event->header.type];
 530         pevent = PyObject_New(struct pyrf_event, ptype);
 531         if (pevent != NULL)
 532                 memcpy(&pevent->event, event, event->header.size);
 533         return (PyObject *)pevent;
 534 }
 535
 536 struct pyrf_cpu_map {
 537         PyObject_HEAD
 538
 539         struct cpu_map *cpus;
 540 };
 541
 542 static int pyrf_cpu_map__init(struct pyrf_cpu_map *pcpus,
 543                               PyObject *args, PyObject *kwargs)
 544 {
 545         static char *kwlist[] = { "cpustr", NULL };
 546         char *cpustr = NULL;
 547
 548         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|s",
 549                                          kwlist, &cpustr))
 550                 return -1;
 551
 552         pcpus->cpus = cpu_map__new(cpustr);
 553         if (pcpus->cpus == NULL)
 554                 return -1;
 555         return 0;
 556 }
 557
 558 static void pyrf_cpu_map__delete(struct pyrf_cpu_map *pcpus)
 559 {
 560         cpu_map__put(pcpus->cpus);
 561         Py_TYPE(pcpus)->tp_free((PyObject*)pcpus);
 562 }
 563
 564 static Py_ssize_t pyrf_cpu_map__length(PyObject *obj)
 565 {
 566         struct pyrf_cpu_map *pcpus = (void *)obj;
 567
 568         return pcpus->cpus->nr;
 569 }
 570
 571 static PyObject *pyrf_cpu_map__item(PyObject *obj, Py_ssize_t i)
 572 {
 573         struct pyrf_cpu_map *pcpus = (void *)obj;
 574
 575         if (i >= pcpus->cpus->nr)
 576                 return NULL;
 577
 578         return Py_BuildValue("i", pcpus->cpus->map[i]);
 579 }
 580
 581 static PySequenceMethods pyrf_cpu_map__sequence_methods = {
 582         .sq_length = pyrf_cpu_map__length,
 583         .sq_item   = pyrf_cpu_map__item,
 584 };
 585
 586 static char pyrf_cpu_map__doc[] = PyDoc_STR("cpu map object.");
 587
 588 static PyTypeObject pyrf_cpu_map__type = {
 589         PyVarObject_HEAD_INIT(NULL, 0)
 590         .tp_name        = "perf.cpu_map",
 591         .tp_basicsize   = sizeof(struct pyrf_cpu_map),
 592         .tp_dealloc     = (destructor)pyrf_cpu_map__delete,
 593         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 594         .tp_doc         = pyrf_cpu_map__doc,
 595         .tp_as_sequence = &pyrf_cpu_map__sequence_methods,
 596         .tp_init        = (initproc)pyrf_cpu_map__init,
 597 };
 598
 599 static int pyrf_cpu_map__setup_types(void)
 600 {
 601         pyrf_cpu_map__type.tp_new = PyType_GenericNew;
 602         return PyType_Ready(&pyrf_cpu_map__type);
 603 }
 604
 605 struct pyrf_thread_map {
 606         PyObject_HEAD
 607
 608         struct thread_map *threads;
 609 };
 610
 611 static int pyrf_thread_map__init(struct pyrf_thread_map *pthreads,
 612                                  PyObject *args, PyObject *kwargs)
 613 {
 614         static char *kwlist[] = { "pid", "tid", "uid", NULL };
 615         int pid = -1, tid = -1, uid = UINT_MAX;
 616
 617         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|iii",
 618                                          kwlist, &pid, &tid, &uid))
 619                 return -1;
 620
 621         pthreads->threads = thread_map__new(pid, tid, uid);
 622         if (pthreads->threads == NULL)
 623                 return -1;
 624         return 0;
 625 }
 626
 627 static void pyrf_thread_map__delete(struct pyrf_thread_map *pthreads)
 628 {
 629         thread_map__put(pthreads->threads);
 630         Py_TYPE(pthreads)->tp_free((PyObject*)pthreads);
 631 }
 632
 633 static Py_ssize_t pyrf_thread_map__length(PyObject *obj)
 634 {
 635         struct pyrf_thread_map *pthreads = (void *)obj;
 636
 637         return pthreads->threads->nr;
 638 }
 639
 640 static PyObject *pyrf_thread_map__item(PyObject *obj, Py_ssize_t i)
 641 {
 642         struct pyrf_thread_map *pthreads = (void *)obj;
 643
 644         if (i >= pthreads->threads->nr)
 645                 return NULL;
 646
 647         return Py_BuildValue("i", pthreads->threads->map[i]);
 648 }
 649
 650 static PySequenceMethods pyrf_thread_map__sequence_methods = {
 651         .sq_length = pyrf_thread_map__length,
 652         .sq_item   = pyrf_thread_map__item,
 653 };
 654
 655 static char pyrf_thread_map__doc[] = PyDoc_STR("thread map object.");
 656
 657 static PyTypeObject pyrf_thread_map__type = {
 658         PyVarObject_HEAD_INIT(NULL, 0)
 659         .tp_name        = "perf.thread_map",
 660         .tp_basicsize   = sizeof(struct pyrf_thread_map),
 661         .tp_dealloc     = (destructor)pyrf_thread_map__delete,
 662         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 663         .tp_doc         = pyrf_thread_map__doc,
 664         .tp_as_sequence = &pyrf_thread_map__sequence_methods,
 665         .tp_init        = (initproc)pyrf_thread_map__init,
 666 };
 667
 668 static int pyrf_thread_map__setup_types(void)
 669 {
 670         pyrf_thread_map__type.tp_new = PyType_GenericNew;
 671         return PyType_Ready(&pyrf_thread_map__type);
 672 }
 673
 674 struct pyrf_evsel {
 675         PyObject_HEAD
 676
 677         struct perf_evsel evsel;
 678 };
 679
 680 static int pyrf_evsel__init(struct pyrf_evsel *pevsel,
 681                             PyObject *args, PyObject *kwargs)
 682 {
 683         struct perf_event_attr attr = {
 684                 .type = PERF_TYPE_HARDWARE,
 685                 .config = PERF_COUNT_HW_CPU_CYCLES,
 686                 .sample_type = PERF_SAMPLE_PERIOD | PERF_SAMPLE_TID,
 687         };
 688         static char *kwlist[] = {
 689                 "type",
 690                 "config",
 691                 "sample_freq",
 692                 "sample_period",
 693                 "sample_type",
 694                 "read_format",
 695                 "disabled",
 696                 "inherit",
 697                 "pinned",
 698                 "exclusive",
 699                 "exclude_user",
 700                 "exclude_kernel",
 701                 "exclude_hv",
 702                 "exclude_idle",
 703                 "mmap",
 704                 "context_switch",
 705                 "comm",
 706                 "freq",
 707                 "inherit_stat",
 708                 "enable_on_exec",
 709                 "task",
 710                 "watermark",
 711                 "precise_ip",
 712                 "mmap_data",
 713                 "sample_id_all",
 714                 "wakeup_events",
 715                 "bp_type",
 716                 "bp_addr",
 717                 "bp_len",
 718                  NULL
 719         };
 720         u64 sample_period = 0;
 721         u32 disabled = 0,
 722             inherit = 0,
 723             pinned = 0,
 724             exclusive = 0,
 725             exclude_user = 0,
 726             exclude_kernel = 0,
 727             exclude_hv = 0,
 728             exclude_idle = 0,
 729             mmap = 0,
 730             context_switch = 0,
 731             comm = 0,
 732             freq = 1,
 733             inherit_stat = 0,
 734             enable_on_exec = 0,
 735             task = 0,
 736             watermark = 0,
 737             precise_ip = 0,
 738             mmap_data = 0,
 739             sample_id_all = 1;
 740         int idx = 0;
 741
 742         if (!PyArg_ParseTupleAndKeywords(args, kwargs,
 743                                          "|iKiKKiiiiiiiiiiiiiiiiiiiiiiKK", kwlist,
 744                                          &attr.type, &attr.config, &attr.sample_freq,
 745                                          &sample_period, &attr.sample_type,
 746                                          &attr.read_format, &disabled, &inherit,
 747                                          &pinned, &exclusive, &exclude_user,
 748                                          &exclude_kernel, &exclude_hv, &exclude_idle,
 749                                          &mmap, &context_switch, &comm, &freq, &inherit_stat,
 750                                          &enable_on_exec, &task, &watermark,
 751                                          &precise_ip, &mmap_data, &sample_id_all,
 752                                          &attr.wakeup_events, &attr.bp_type,
 753                                          &attr.bp_addr, &attr.bp_len, &idx))
 754                 return -1;
 755
 756         /* union... */
 757         if (sample_period != 0) {
 758                 if (attr.sample_freq != 0)
 759                         return -1; /* FIXME: throw right exception */
 760                 attr.sample_period = sample_period;
 761         }
 762
 763         /* Bitfields */
 764         attr.disabled       = disabled;
 765         attr.inherit        = inherit;
 766         attr.pinned         = pinned;
 767         attr.exclusive      = exclusive;
 768         attr.exclude_user   = exclude_user;
 769         attr.exclude_kernel = exclude_kernel;
 770         attr.exclude_hv     = exclude_hv;
 771         attr.exclude_idle   = exclude_idle;
 772         attr.mmap           = mmap;
 773         attr.context_switch = context_switch;
 774         attr.comm           = comm;
 775         attr.freq           = freq;
 776         attr.inherit_stat   = inherit_stat;
 777         attr.enable_on_exec = enable_on_exec;
 778         attr.task           = task;
 779         attr.watermark      = watermark;
 780         attr.precise_ip     = precise_ip;
 781         attr.mmap_data      = mmap_data;
 782         attr.sample_id_all  = sample_id_all;
 783         attr.size           = sizeof(attr);
 784
 785         perf_evsel__init(&pevsel->evsel, &attr, idx);
 786         return 0;
 787 }
 788
 789 static void pyrf_evsel__delete(struct pyrf_evsel *pevsel)
 790 {
 791         perf_evsel__exit(&pevsel->evsel);
 792         Py_TYPE(pevsel)->tp_free((PyObject*)pevsel);
 793 }
 794
 795 static PyObject *pyrf_evsel__open(struct pyrf_evsel *pevsel,
 796                                   PyObject *args, PyObject *kwargs)
 797 {
 798         struct perf_evsel *evsel = &pevsel->evsel;
 799         struct cpu_map *cpus = NULL;
 800         struct thread_map *threads = NULL;
 801         PyObject *pcpus = NULL, *pthreads = NULL;
 802         int group = 0, inherit = 0;
 803         static char *kwlist[] = { "cpus", "threads", "group", "inherit", NULL };
 804
 805         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|OOii", kwlist,
 806                                          &pcpus, &pthreads, &group, &inherit))
 807                 return NULL;
 808
 809         if (pthreads != NULL)
 810                 threads = ((struct pyrf_thread_map *)pthreads)->threads;
 811
 812         if (pcpus != NULL)
 813                 cpus = ((struct pyrf_cpu_map *)pcpus)->cpus;
 814
 815         evsel->attr.inherit = inherit;
 816         /*
 817          * This will group just the fds for this single evsel, to group
 818          * multiple events, use evlist.open().
 819          */
 820         if (perf_evsel__open(evsel, cpus, threads) < 0) {
 821                 PyErr_SetFromErrno(PyExc_OSError);
 822                 return NULL;
 823         }
 824
 825         Py_INCREF(Py_None);
 826         return Py_None;
 827 }
 828
 829 static PyMethodDef pyrf_evsel__methods[] = {
 830         {
 831                 .ml_name  = "open",
 832                 .ml_meth  = (PyCFunction)pyrf_evsel__open,
 833                 .ml_flags = METH_VARARGS | METH_KEYWORDS,
 834                 .ml_doc   = PyDoc_STR("open the event selector file descriptor table.")
 835         },
 836         { .ml_name = NULL, }
 837 };
 838
 839 static char pyrf_evsel__doc[] = PyDoc_STR("perf event selector list object.");
 840
 841 static PyTypeObject pyrf_evsel__type = {
 842         PyVarObject_HEAD_INIT(NULL, 0)
 843         .tp_name        = "perf.evsel",
 844         .tp_basicsize   = sizeof(struct pyrf_evsel),
 845         .tp_dealloc     = (destructor)pyrf_evsel__delete,
 846         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 847         .tp_doc         = pyrf_evsel__doc,
 848         .tp_methods     = pyrf_evsel__methods,
 849         .tp_init        = (initproc)pyrf_evsel__init,
 850 };
 851
 852 static int pyrf_evsel__setup_types(void)
 853 {
 854         pyrf_evsel__type.tp_new = PyType_GenericNew;
 855         return PyType_Ready(&pyrf_evsel__type);
 856 }
 857
 858 struct pyrf_evlist {
 859         PyObject_HEAD
 860
 861         struct perf_evlist evlist;
 862 };
 863
 864 static int pyrf_evlist__init(struct pyrf_evlist *pevlist,
 865                              PyObject *args, PyObject *kwargs __maybe_unused)
 866 {
 867         PyObject *pcpus = NULL, *pthreads = NULL;
 868         struct cpu_map *cpus;
 869         struct thread_map *threads;
 870
 871         if (!PyArg_ParseTuple(args, "OO", &pcpus, &pthreads))
 872                 return -1;
 873
 874         threads = ((struct pyrf_thread_map *)pthreads)->threads;
 875         cpus = ((struct pyrf_cpu_map *)pcpus)->cpus;
 876         perf_evlist__init(&pevlist->evlist, cpus, threads);
 877         return 0;
 878 }
 879
 880 static void pyrf_evlist__delete(struct pyrf_evlist *pevlist)
 881 {
 882         perf_evlist__exit(&pevlist->evlist);
 883         Py_TYPE(pevlist)->tp_free((PyObject*)pevlist);
 884 }
 885
 886 static PyObject *pyrf_evlist__mmap(struct pyrf_evlist *pevlist,
 887                                    PyObject *args, PyObject *kwargs)
 888 {
 889         struct perf_evlist *evlist = &pevlist->evlist;
 890         static char *kwlist[] = { "pages", "overwrite", NULL };
 891         int pages = 128, overwrite = false;
 892
 893         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|ii", kwlist,
 894                                          &pages, &overwrite))
 895                 return NULL;
 896
 897         if (perf_evlist__mmap(evlist, pages) < 0) {
 898                 PyErr_SetFromErrno(PyExc_OSError);
 899                 return NULL;
 900         }
 901
 902         Py_INCREF(Py_None);
 903         return Py_None;
 904 }
 905
 906 static PyObject *pyrf_evlist__poll(struct pyrf_evlist *pevlist,
 907                                    PyObject *args, PyObject *kwargs)
 908 {
 909         struct perf_evlist *evlist = &pevlist->evlist;
 910         static char *kwlist[] = { "timeout", NULL };
 911         int timeout = -1, n;
 912
 913         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|i", kwlist, &timeout))
 914                 return NULL;
 915
 916         n = perf_evlist__poll(evlist, timeout);
 917         if (n < 0) {
 918                 PyErr_SetFromErrno(PyExc_OSError);
 919                 return NULL;
 920         }
 921
 922         return Py_BuildValue("i", n);
 923 }
 924
 925 static PyObject *pyrf_evlist__get_pollfd(struct pyrf_evlist *pevlist,
 926                                          PyObject *args __maybe_unused,
 927                                          PyObject *kwargs __maybe_unused)
 928 {
 929         struct perf_evlist *evlist = &pevlist->evlist;
 930         PyObject *list = PyList_New(0);
 931         int i;
 932
 933         for (i = 0; i < evlist->pollfd.nr; ++i) {
 934                 PyObject *file;
 935 #if PY_MAJOR_VERSION < 3
 936                 FILE *fp = fdopen(evlist->pollfd.entries[i].fd, "r");
 937
 938                 if (fp == NULL)
 939                         goto free_list;
 940
 941                 file = PyFile_FromFile(fp, "perf", "r", NULL);
 942 #else
 943                 file = PyFile_FromFd(evlist->pollfd.entries[i].fd, "perf", "r", -1,
 944                                      NULL, NULL, NULL, 0);
 945 #endif
 946                 if (file == NULL)
 947                         goto free_list;
 948
 949                 if (PyList_Append(list, file) != 0) {
 950                         Py_DECREF(file);
 951                         goto free_list;
 952                 }
 953
 954                 Py_DECREF(file);
 955         }
 956
 957         return list;
 958 free_list:
 959         return PyErr_NoMemory();
 960 }
 961
 962
 963 static PyObject *pyrf_evlist__add(struct pyrf_evlist *pevlist,
 964                                   PyObject *args,
 965                                   PyObject *kwargs __maybe_unused)
 966 {
 967         struct perf_evlist *evlist = &pevlist->evlist;
 968         PyObject *pevsel;
 969         struct perf_evsel *evsel;
 970
 971         if (!PyArg_ParseTuple(args, "O", &pevsel))
 972                 return NULL;
 973
 974         Py_INCREF(pevsel);
 975         evsel = &((struct pyrf_evsel *)pevsel)->evsel;
 976         evsel->idx = evlist->nr_entries;
 977         perf_evlist__add(evlist, evsel);
 978
 979         return Py_BuildValue("i", evlist->nr_entries);
 980 }
 981
 982 static struct perf_mmap *get_md(struct perf_evlist *evlist, int cpu)
 983 {
 984         int i;
 985
 986         for (i = 0; i < evlist->nr_mmaps; i++) {
 987                 struct perf_mmap *md = &evlist->mmap[i];
 988
 989                 if (md->cpu == cpu)
 990                         return md;
 991         }
 992
 993         return NULL;
 994 }
 995
 996 static PyObject *pyrf_evlist__read_on_cpu(struct pyrf_evlist *pevlist,
 997                                           PyObject *args, PyObject *kwargs)
 998 {
 999         struct perf_evlist *evlist = &pevlist->evlist;
1000         union perf_event *event;
1001         int sample_id_all = 1, cpu;
1002         static char *kwlist[] = { "cpu", "sample_id_all", NULL };
1003         struct perf_mmap *md;
1004         int err;
1005
1006         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "i|i", kwlist,
1007                                          &cpu, &sample_id_all))
1008                 return NULL;
1009
1010         md = get_md(evlist, cpu);
1011         if (!md)
1012                 return NULL;
1013
1014         if (perf_mmap__read_init(md) < 0)
1015                 goto end;
1016
1017         event = perf_mmap__read_event(md);
1018         if (event != NULL) {
1019                 PyObject *pyevent = pyrf_event__new(event);
1020                 struct pyrf_event *pevent = (struct pyrf_event *)pyevent;
1021                 struct perf_evsel *evsel;
1022
1023                 if (pyevent == NULL)
1024                         return PyErr_NoMemory();
1025
1026                 evsel = perf_evlist__event2evsel(evlist, event);
1027                 if (!evsel) {
1028                         Py_INCREF(Py_None);
1029                         return Py_None;
1030                 }
1031
1032                 pevent->evsel = evsel;
1033
1034                 err = perf_evsel__parse_sample(evsel, event, &pevent->sample);
1035
1036                 /* Consume the even only after we parsed it out. */
1037                 perf_mmap__consume(md);
1038
1039                 if (err)
1040                         return PyErr_Format(PyExc_OSError,
1041                                             "perf: can't parse sample, err=%d", err);
1042                 return pyevent;
1043         }
1044 end:
1045         Py_INCREF(Py_None);
1046         return Py_None;
1047 }
1048
1049 static PyObject *pyrf_evlist__open(struct pyrf_evlist *pevlist,
1050                                    PyObject *args, PyObject *kwargs)
1051 {
1052         struct perf_evlist *evlist = &pevlist->evlist;
1053         int group = 0;
1054         static char *kwlist[] = { "group", NULL };
1055
1056         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|OOii", kwlist, &group))
1057                 return NULL;
1058
1059         if (group)
1060                 perf_evlist__set_leader(evlist);
1061
1062         if (perf_evlist__open(evlist) < 0) {
1063                 PyErr_SetFromErrno(PyExc_OSError);
1064                 return NULL;
1065         }
1066
1067         Py_INCREF(Py_None);
1068         return Py_None;
1069 }
1070
1071 static PyMethodDef pyrf_evlist__methods[] = {
1072         {
1073                 .ml_name  = "mmap",
1074                 .ml_meth  = (PyCFunction)pyrf_evlist__mmap,
1075                 .ml_flags = METH_VARARGS | METH_KEYWORDS,
1076                 .ml_doc   = PyDoc_STR("mmap the file descriptor table.")
1077         },
1078         {
1079                 .ml_name  = "open",
1080                 .ml_meth  = (PyCFunction)pyrf_evlist__open,
1081                 .ml_flags = METH_VARARGS | METH_KEYWORDS,
1082                 .ml_doc   = PyDoc_STR("open the file descriptors.")
1083         },
1084         {
1085                 .ml_name  = "poll",
1086                 .ml_meth  = (PyCFunction)pyrf_evlist__poll,
1087                 .ml_flags = METH_VARARGS | METH_KEYWORDS,
1088                 .ml_doc   = PyDoc_STR("poll the file descriptor table.")
1089         },
1090         {
1091                 .ml_name  = "get_pollfd",
1092                 .ml_meth  = (PyCFunction)pyrf_evlist__get_pollfd,
1093                 .ml_flags = METH_VARARGS | METH_KEYWORDS,
1094                 .ml_doc   = PyDoc_STR("get the poll file descriptor table.")
1095         },
1096         {
1097                 .ml_name  = "add",
1098                 .ml_meth  = (PyCFunction)pyrf_evlist__add,
1099                 .ml_flags = METH_VARARGS | METH_KEYWORDS,
1100                 .ml_doc   = PyDoc_STR("adds an event selector to the list.")
1101         },
1102         {
1103                 .ml_name  = "read_on_cpu",
1104                 .ml_meth  = (PyCFunction)pyrf_evlist__read_on_cpu,
1105                 .ml_flags = METH_VARARGS | METH_KEYWORDS,
1106                 .ml_doc   = PyDoc_STR("reads an event.")
1107         },
1108         { .ml_name = NULL, }
1109 };
1110
1111 static Py_ssize_t pyrf_evlist__length(PyObject *obj)
1112 {
1113         struct pyrf_evlist *pevlist = (void *)obj;
1114
1115         return pevlist->evlist.nr_entries;
1116 }
1117
1118 static PyObject *pyrf_evlist__item(PyObject *obj, Py_ssize_t i)
1119 {
1120         struct pyrf_evlist *pevlist = (void *)obj;
1121         struct perf_evsel *pos;
1122
1123         if (i >= pevlist->evlist.nr_entries)
1124                 return NULL;
1125
1126         evlist__for_each_entry(&pevlist->evlist, pos) {
1127                 if (i-- == 0)
1128                         break;
1129         }
1130
1131         return Py_BuildValue("O", container_of(pos, struct pyrf_evsel, evsel));
1132 }
1133
1134 static PySequenceMethods pyrf_evlist__sequence_methods = {
1135         .sq_length = pyrf_evlist__length,
1136         .sq_item   = pyrf_evlist__item,
1137 };
1138
1139 static char pyrf_evlist__doc[] = PyDoc_STR("perf event selector list object.");
1140
1141 static PyTypeObject pyrf_evlist__type = {
1142         PyVarObject_HEAD_INIT(NULL, 0)
1143         .tp_name        = "perf.evlist",
1144         .tp_basicsize   = sizeof(struct pyrf_evlist),
1145         .tp_dealloc     = (destructor)pyrf_evlist__delete,
1146         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
1147         .tp_as_sequence = &pyrf_evlist__sequence_methods,
1148         .tp_doc         = pyrf_evlist__doc,
1149         .tp_methods     = pyrf_evlist__methods,
1150         .tp_init        = (initproc)pyrf_evlist__init,
1151 };
1152
1153 static int pyrf_evlist__setup_types(void)
1154 {
1155         pyrf_evlist__type.tp_new = PyType_GenericNew;
1156         return PyType_Ready(&pyrf_evlist__type);
1157 }
1158
1159 #define PERF_CONST(name) { #name, PERF_##name }
1160
1161 static struct {
1162         const char *name;
1163         int         value;
1164 } perf__constants[] = {
1165         PERF_CONST(TYPE_HARDWARE),
1166         PERF_CONST(TYPE_SOFTWARE),
1167         PERF_CONST(TYPE_TRACEPOINT),
1168         PERF_CONST(TYPE_HW_CACHE),
1169         PERF_CONST(TYPE_RAW),
1170         PERF_CONST(TYPE_BREAKPOINT),
1171
1172         PERF_CONST(COUNT_HW_CPU_CYCLES),
1173         PERF_CONST(COUNT_HW_INSTRUCTIONS),
1174         PERF_CONST(COUNT_HW_CACHE_REFERENCES),
1175         PERF_CONST(COUNT_HW_CACHE_MISSES),
1176         PERF_CONST(COUNT_HW_BRANCH_INSTRUCTIONS),
1177         PERF_CONST(COUNT_HW_BRANCH_MISSES),
1178         PERF_CONST(COUNT_HW_BUS_CYCLES),
1179         PERF_CONST(COUNT_HW_CACHE_L1D),
1180         PERF_CONST(COUNT_HW_CACHE_L1I),
1181         PERF_CONST(COUNT_HW_CACHE_LL),
1182         PERF_CONST(COUNT_HW_CACHE_DTLB),
1183         PERF_CONST(COUNT_HW_CACHE_ITLB),
1184         PERF_CONST(COUNT_HW_CACHE_BPU),
1185         PERF_CONST(COUNT_HW_CACHE_OP_READ),
1186         PERF_CONST(COUNT_HW_CACHE_OP_WRITE),
1187         PERF_CONST(COUNT_HW_CACHE_OP_PREFETCH),
1188         PERF_CONST(COUNT_HW_CACHE_RESULT_ACCESS),
1189         PERF_CONST(COUNT_HW_CACHE_RESULT_MISS),
1190
1191         PERF_CONST(COUNT_HW_STALLED_CYCLES_FRONTEND),
1192         PERF_CONST(COUNT_HW_STALLED_CYCLES_BACKEND),
1193
1194         PERF_CONST(COUNT_SW_CPU_CLOCK),
1195         PERF_CONST(COUNT_SW_TASK_CLOCK),
1196         PERF_CONST(COUNT_SW_PAGE_FAULTS),
1197         PERF_CONST(COUNT_SW_CONTEXT_SWITCHES),
1198         PERF_CONST(COUNT_SW_CPU_MIGRATIONS),
1199         PERF_CONST(COUNT_SW_PAGE_FAULTS_MIN),
1200         PERF_CONST(COUNT_SW_PAGE_FAULTS_MAJ),
1201         PERF_CONST(COUNT_SW_ALIGNMENT_FAULTS),
1202         PERF_CONST(COUNT_SW_EMULATION_FAULTS),
1203         PERF_CONST(COUNT_SW_DUMMY),
1204
1205         PERF_CONST(SAMPLE_IP),
1206         PERF_CONST(SAMPLE_TID),
1207         PERF_CONST(SAMPLE_TIME),
1208         PERF_CONST(SAMPLE_ADDR),
1209         PERF_CONST(SAMPLE_READ),
1210         PERF_CONST(SAMPLE_CALLCHAIN),
1211         PERF_CONST(SAMPLE_ID),
1212         PERF_CONST(SAMPLE_CPU),
1213         PERF_CONST(SAMPLE_PERIOD),
1214         PERF_CONST(SAMPLE_STREAM_ID),
1215         PERF_CONST(SAMPLE_RAW),
1216
1217         PERF_CONST(FORMAT_TOTAL_TIME_ENABLED),
1218         PERF_CONST(FORMAT_TOTAL_TIME_RUNNING),
1219         PERF_CONST(FORMAT_ID),
1220         PERF_CONST(FORMAT_GROUP),
1221
1222         PERF_CONST(RECORD_MMAP),
1223         PERF_CONST(RECORD_LOST),
1224         PERF_CONST(RECORD_COMM),
1225         PERF_CONST(RECORD_EXIT),
1226         PERF_CONST(RECORD_THROTTLE),
1227         PERF_CONST(RECORD_UNTHROTTLE),
1228         PERF_CONST(RECORD_FORK),
1229         PERF_CONST(RECORD_READ),
1230         PERF_CONST(RECORD_SAMPLE),
1231         PERF_CONST(RECORD_MMAP2),
1232         PERF_CONST(RECORD_AUX),
1233         PERF_CONST(RECORD_ITRACE_START),
1234         PERF_CONST(RECORD_LOST_SAMPLES),
1235         PERF_CONST(RECORD_SWITCH),
1236         PERF_CONST(RECORD_SWITCH_CPU_WIDE),
1237
1238         PERF_CONST(RECORD_MISC_SWITCH_OUT),
1239         { .name = NULL, },
1240 };
1241
1242 static PyObject *pyrf__tracepoint(struct pyrf_evsel *pevsel,
1243                                   PyObject *args, PyObject *kwargs)
1244 {
1245         struct tep_event *tp_format;
1246         static char *kwlist[] = { "sys", "name", NULL };
1247         char *sys  = NULL;
1248         char *name = NULL;
1249
1250         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|ss", kwlist,
1251                                          &sys, &name))
1252                 return NULL;
1253
1254         tp_format = trace_event__tp_format(sys, name);
1255         if (IS_ERR(tp_format))
1256                 return _PyLong_FromLong(-1);
1257
1258         return _PyLong_FromLong(tp_format->id);
1259 }
1260
1261 static PyMethodDef perf__methods[] = {
1262         {
1263                 .ml_name  = "tracepoint",
1264                 .ml_meth  = (PyCFunction) pyrf__tracepoint,
1265                 .ml_flags = METH_VARARGS | METH_KEYWORDS,
1266                 .ml_doc   = PyDoc_STR("Get tracepoint config.")
1267         },
1268         { .ml_name = NULL, }
1269 };
1270
1271 #if PY_MAJOR_VERSION < 3
1272 PyMODINIT_FUNC initperf(void)
1273 #else
1274 PyMODINIT_FUNC PyInit_perf(void)
1275 #endif
1276 {
1277         PyObject *obj;
1278         int i;
1279         PyObject *dict;
1280 #if PY_MAJOR_VERSION < 3
1281         PyObject *module = Py_InitModule("perf", perf__methods);
1282 #else
1283         static struct PyModuleDef moduledef = {
1284                 PyModuleDef_HEAD_INIT,
1285                 "perf",                 /* m_name */
1286                 "",                     /* m_doc */
1287                 -1,                     /* m_size */
1288                 perf__methods,          /* m_methods */
1289                 NULL,                   /* m_reload */
1290                 NULL,                   /* m_traverse */
1291                 NULL,                   /* m_clear */
1292                 NULL,                   /* m_free */
1293         };
1294         PyObject *module = PyModule_Create(&moduledef);
1295 #endif
1296
1297         if (module == NULL ||
1298             pyrf_event__setup_types() < 0 ||
1299             pyrf_evlist__setup_types() < 0 ||
1300             pyrf_evsel__setup_types() < 0 ||
1301             pyrf_thread_map__setup_types() < 0 ||
1302             pyrf_cpu_map__setup_types() < 0)
1303 #if PY_MAJOR_VERSION < 3
1304                 return;
1305 #else
1306                 return module;
1307 #endif
1308
1309         /* The page_size is placed in util object. */
1310         page_size = sysconf(_SC_PAGE_SIZE);
1311
1312         Py_INCREF(&pyrf_evlist__type);
1313         PyModule_AddObject(module, "evlist", (PyObject*)&pyrf_evlist__type);
1314
1315         Py_INCREF(&pyrf_evsel__type);
1316         PyModule_AddObject(module, "evsel", (PyObject*)&pyrf_evsel__type);
1317
1318         Py_INCREF(&pyrf_mmap_event__type);
1319         PyModule_AddObject(module, "mmap_event", (PyObject *)&pyrf_mmap_event__type);
1320
1321         Py_INCREF(&pyrf_lost_event__type);
1322         PyModule_AddObject(module, "lost_event", (PyObject *)&pyrf_lost_event__type);
1323
1324         Py_INCREF(&pyrf_comm_event__type);
1325         PyModule_AddObject(module, "comm_event", (PyObject *)&pyrf_comm_event__type);
1326
1327         Py_INCREF(&pyrf_task_event__type);
1328         PyModule_AddObject(module, "task_event", (PyObject *)&pyrf_task_event__type);
1329
1330         Py_INCREF(&pyrf_throttle_event__type);
1331         PyModule_AddObject(module, "throttle_event", (PyObject *)&pyrf_throttle_event__type);
1332
1333         Py_INCREF(&pyrf_task_event__type);
1334         PyModule_AddObject(module, "task_event", (PyObject *)&pyrf_task_event__type);
1335
1336         Py_INCREF(&pyrf_read_event__type);
1337         PyModule_AddObject(module, "read_event", (PyObject *)&pyrf_read_event__type);
1338
1339         Py_INCREF(&pyrf_sample_event__type);
1340         PyModule_AddObject(module, "sample_event", (PyObject *)&pyrf_sample_event__type);
1341
1342         Py_INCREF(&pyrf_context_switch_event__type);
1343         PyModule_AddObject(module, "switch_event", (PyObject *)&pyrf_context_switch_event__type);
1344
1345         Py_INCREF(&pyrf_thread_map__type);
1346         PyModule_AddObject(module, "thread_map", (PyObject*)&pyrf_thread_map__type);
1347
1348         Py_INCREF(&pyrf_cpu_map__type);
1349         PyModule_AddObject(module, "cpu_map", (PyObject*)&pyrf_cpu_map__type);
1350
1351         dict = PyModule_GetDict(module);
1352         if (dict == NULL)
1353                 goto error;
1354
1355         for (i = 0; perf__constants[i].name != NULL; i++) {
1356                 obj = _PyLong_FromLong(perf__constants[i].value);
1357                 if (obj == NULL)
1358                         goto error;
1359                 PyDict_SetItemString(dict, perf__constants[i].name, obj);
1360                 Py_DECREF(obj);
1361         }
1362
1363 error:
1364         if (PyErr_Occurred())
1365                 PyErr_SetString(PyExc_ImportError, "perf: Init failed!");
1366 #if PY_MAJOR_VERSION >= 3
1367         return module;
1368 #endif
1369 }
1370
1371 /*
1372  * Dummy, to avoid dragging all the test_attr infrastructure in the python
1373  * binding.
1374  */
1375 void test_attr__open(struct perf_event_attr *attr, pid_t pid, int cpu,
1376                      int fd, int group_fd, unsigned long flags)
1377 {
1378 }