tools/perf/util/python.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 #include <Python.h>
   3 #include <structmember.h>
   4 #include <inttypes.h>
   5 #include <poll.h>
   6 #include <linux/err.h>
   7 #include <perf/cpumap.h>
   8 #ifdef HAVE_LIBTRACEEVENT
   9 #include <traceevent/event-parse.h>
  10 #endif
  11 #include <perf/mmap.h>
  12 #include "evlist.h"
  13 #include "callchain.h"
  14 #include "evsel.h"
  15 #include "event.h"
  16 #include "print_binary.h"
  17 #include "thread_map.h"
  18 #include "trace-event.h"
  19 #include "mmap.h"
  20 #include "stat.h"
  21 #include "metricgroup.h"
  22 #include "util/bpf-filter.h"
  23 #include "util/env.h"
  24 #include "util/pmu.h"
  25 #include "util/pmus.h"
  26 #include <internal/lib.h>
  27 #include "util.h"
  28
  29 #if PY_MAJOR_VERSION < 3
  30 #define _PyUnicode_FromString(arg) \
  31   PyString_FromString(arg)
  32 #define _PyUnicode_AsString(arg) \
  33   PyString_AsString(arg)
  34 #define _PyUnicode_FromFormat(...) \
  35   PyString_FromFormat(__VA_ARGS__)
  36 #define _PyLong_FromLong(arg) \
  37   PyInt_FromLong(arg)
  38
  39 #else
  40
  41 #define _PyUnicode_FromString(arg) \
  42   PyUnicode_FromString(arg)
  43 #define _PyUnicode_FromFormat(...) \
  44   PyUnicode_FromFormat(__VA_ARGS__)
  45 #define _PyLong_FromLong(arg) \
  46   PyLong_FromLong(arg)
  47 #endif
  48
  49 #ifndef Py_TYPE
  50 #define Py_TYPE(ob) (((PyObject*)(ob))->ob_type)
  51 #endif
  52
  53 /*
  54  * Avoid bringing in event parsing.
  55  */
  56 int parse_event(struct evlist *evlist __maybe_unused, const char *str __maybe_unused)
  57 {
  58         return 0;
  59 }
  60
  61 /*
  62  * Provide these two so that we don't have to link against callchain.c and
  63  * start dragging hist.c, etc.
  64  */
  65 struct callchain_param callchain_param;
  66
  67 int parse_callchain_record(const char *arg __maybe_unused,
  68                            struct callchain_param *param __maybe_unused)
  69 {
  70         return 0;
  71 }
  72
  73 /*
  74  * Add these not to drag util/env.c
  75  */
  76 struct perf_env perf_env;
  77
  78 const char *perf_env__cpuid(struct perf_env *env __maybe_unused)
  79 {
  80         return NULL;
  81 }
  82
  83 // This one is a bit easier, wouldn't drag too much, but leave it as a stub we need it here
  84 const char *perf_env__arch(struct perf_env *env __maybe_unused)
  85 {
  86         return NULL;
  87 }
  88
  89 /*
  90  * These ones are needed not to drag the PMU bandwagon, jevents generated
  91  * pmu_sys_event_tables, etc and evsel__find_pmu() is used so far just for
  92  * doing per PMU perf_event_attr.exclude_guest handling, not really needed, so
  93  * far, for the perf python binding known usecases, revisit if this become
  94  * necessary.
  95  */
  96 struct perf_pmu *evsel__find_pmu(const struct evsel *evsel __maybe_unused)
  97 {
  98         return NULL;
  99 }
 100
 101 int perf_pmu__scan_file(struct perf_pmu *pmu, const char *name, const char *fmt, ...)
 102 {
 103         return EOF;
 104 }
 105
 106 int perf_pmus__num_core_pmus(void)
 107 {
 108         return 1;
 109 }
 110
 111 bool evsel__is_aux_event(const struct evsel *evsel __maybe_unused)
 112 {
 113         return false;
 114 }
 115
 116 /*
 117  * Add this one here not to drag util/metricgroup.c
 118  */
 119 int metricgroup__copy_metric_events(struct evlist *evlist, struct cgroup *cgrp,
 120                                     struct rblist *new_metric_events,
 121                                     struct rblist *old_metric_events)
 122 {
 123         return 0;
 124 }
 125
 126 /*
 127  * Add this one here not to drag util/trace-event-info.c
 128  */
 129 char *tracepoint_id_to_name(u64 config)
 130 {
 131         return NULL;
 132 }
 133
 134 /*
 135  * XXX: All these evsel destructors need some better mechanism, like a linked
 136  * list of destructors registered when the relevant code indeed is used instead
 137  * of having more and more calls in perf_evsel__delete(). -- acme
 138  *
 139  * For now, add some more:
 140  *
 141  * Not to drag the BPF bandwagon...
 142  */
 143 void bpf_counter__destroy(struct evsel *evsel);
 144 int bpf_counter__install_pe(struct evsel *evsel, int cpu, int fd);
 145 int bpf_counter__disable(struct evsel *evsel);
 146
 147 void bpf_counter__destroy(struct evsel *evsel __maybe_unused)
 148 {
 149 }
 150
 151 int bpf_counter__install_pe(struct evsel *evsel __maybe_unused, int cpu __maybe_unused, int fd __maybe_unused)
 152 {
 153         return 0;
 154 }
 155
 156 int bpf_counter__disable(struct evsel *evsel __maybe_unused)
 157 {
 158         return 0;
 159 }
 160
 161 // not to drag util/bpf-filter.c
 162 #ifdef HAVE_BPF_SKEL
 163 int perf_bpf_filter__prepare(struct evsel *evsel __maybe_unused)
 164 {
 165         return 0;
 166 }
 167
 168 int perf_bpf_filter__destroy(struct evsel *evsel __maybe_unused)
 169 {
 170         return 0;
 171 }
 172 #endif
 173
 174 /*
 175  * Support debug printing even though util/debug.c is not linked.  That means
 176  * implementing 'verbose' and 'eprintf'.
 177  */
 178 int verbose;
 179 int debug_peo_args;
 180
 181 int eprintf(int level, int var, const char *fmt, ...);
 182
 183 int eprintf(int level, int var, const char *fmt, ...)
 184 {
 185         va_list args;
 186         int ret = 0;
 187
 188         if (var >= level) {
 189                 va_start(args, fmt);
 190                 ret = vfprintf(stderr, fmt, args);
 191                 va_end(args);
 192         }
 193
 194         return ret;
 195 }
 196
 197 /* Define PyVarObject_HEAD_INIT for python 2.5 */
 198 #ifndef PyVarObject_HEAD_INIT
 199 # define PyVarObject_HEAD_INIT(type, size) PyObject_HEAD_INIT(type) size,
 200 #endif
 201
 202 #if PY_MAJOR_VERSION < 3
 203 PyMODINIT_FUNC initperf(void);
 204 #else
 205 PyMODINIT_FUNC PyInit_perf(void);
 206 #endif
 207
 208 #define member_def(type, member, ptype, help) \
 209         { #member, ptype, \
 210           offsetof(struct pyrf_event, event) + offsetof(struct type, member), \
 211           0, help }
 212
 213 #define sample_member_def(name, member, ptype, help) \
 214         { #name, ptype, \
 215           offsetof(struct pyrf_event, sample) + offsetof(struct perf_sample, member), \
 216           0, help }
 217
 218 struct pyrf_event {
 219         PyObject_HEAD
 220         struct evsel *evsel;
 221         struct perf_sample sample;
 222         union perf_event   event;
 223 };
 224
 225 #define sample_members \
 226         sample_member_def(sample_ip, ip, T_ULONGLONG, "event type"),                     \
 227         sample_member_def(sample_pid, pid, T_INT, "event pid"),                  \
 228         sample_member_def(sample_tid, tid, T_INT, "event tid"),                  \
 229         sample_member_def(sample_time, time, T_ULONGLONG, "event timestamp"),            \
 230         sample_member_def(sample_addr, addr, T_ULONGLONG, "event addr"),                 \
 231         sample_member_def(sample_id, id, T_ULONGLONG, "event id"),                       \
 232         sample_member_def(sample_stream_id, stream_id, T_ULONGLONG, "event stream id"), \
 233         sample_member_def(sample_period, period, T_ULONGLONG, "event period"),           \
 234         sample_member_def(sample_cpu, cpu, T_UINT, "event cpu"),
 235
 236 static char pyrf_mmap_event__doc[] = PyDoc_STR("perf mmap event object.");
 237
 238 static PyMemberDef pyrf_mmap_event__members[] = {
 239         sample_members
 240         member_def(perf_event_header, type, T_UINT, "event type"),
 241         member_def(perf_event_header, misc, T_UINT, "event misc"),
 242         member_def(perf_record_mmap, pid, T_UINT, "event pid"),
 243         member_def(perf_record_mmap, tid, T_UINT, "event tid"),
 244         member_def(perf_record_mmap, start, T_ULONGLONG, "start of the map"),
 245         member_def(perf_record_mmap, len, T_ULONGLONG, "map length"),
 246         member_def(perf_record_mmap, pgoff, T_ULONGLONG, "page offset"),
 247         member_def(perf_record_mmap, filename, T_STRING_INPLACE, "backing store"),
 248         { .name = NULL, },
 249 };
 250
 251 static PyObject *pyrf_mmap_event__repr(struct pyrf_event *pevent)
 252 {
 253         PyObject *ret;
 254         char *s;
 255
 256         if (asprintf(&s, "{ type: mmap, pid: %u, tid: %u, start: %#" PRI_lx64 ", "
 257                          "length: %#" PRI_lx64 ", offset: %#" PRI_lx64 ", "
 258                          "filename: %s }",
 259                      pevent->event.mmap.pid, pevent->event.mmap.tid,
 260                      pevent->event.mmap.start, pevent->event.mmap.len,
 261                      pevent->event.mmap.pgoff, pevent->event.mmap.filename) < 0) {
 262                 ret = PyErr_NoMemory();
 263         } else {
 264                 ret = _PyUnicode_FromString(s);
 265                 free(s);
 266         }
 267         return ret;
 268 }
 269
 270 static PyTypeObject pyrf_mmap_event__type = {
 271         PyVarObject_HEAD_INIT(NULL, 0)
 272         .tp_name        = "perf.mmap_event",
 273         .tp_basicsize   = sizeof(struct pyrf_event),
 274         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 275         .tp_doc         = pyrf_mmap_event__doc,
 276         .tp_members     = pyrf_mmap_event__members,
 277         .tp_repr        = (reprfunc)pyrf_mmap_event__repr,
 278 };
 279
 280 static char pyrf_task_event__doc[] = PyDoc_STR("perf task (fork/exit) event object.");
 281
 282 static PyMemberDef pyrf_task_event__members[] = {
 283         sample_members
 284         member_def(perf_event_header, type, T_UINT, "event type"),
 285         member_def(perf_record_fork, pid, T_UINT, "event pid"),
 286         member_def(perf_record_fork, ppid, T_UINT, "event ppid"),
 287         member_def(perf_record_fork, tid, T_UINT, "event tid"),
 288         member_def(perf_record_fork, ptid, T_UINT, "event ptid"),
 289         member_def(perf_record_fork, time, T_ULONGLONG, "timestamp"),
 290         { .name = NULL, },
 291 };
 292
 293 static PyObject *pyrf_task_event__repr(struct pyrf_event *pevent)
 294 {
 295         return _PyUnicode_FromFormat("{ type: %s, pid: %u, ppid: %u, tid: %u, "
 296                                    "ptid: %u, time: %" PRI_lu64 "}",
 297                                    pevent->event.header.type == PERF_RECORD_FORK ? "fork" : "exit",
 298                                    pevent->event.fork.pid,
 299                                    pevent->event.fork.ppid,
 300                                    pevent->event.fork.tid,
 301                                    pevent->event.fork.ptid,
 302                                    pevent->event.fork.time);
 303 }
 304
 305 static PyTypeObject pyrf_task_event__type = {
 306         PyVarObject_HEAD_INIT(NULL, 0)
 307         .tp_name        = "perf.task_event",
 308         .tp_basicsize   = sizeof(struct pyrf_event),
 309         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 310         .tp_doc         = pyrf_task_event__doc,
 311         .tp_members     = pyrf_task_event__members,
 312         .tp_repr        = (reprfunc)pyrf_task_event__repr,
 313 };
 314
 315 static char pyrf_comm_event__doc[] = PyDoc_STR("perf comm event object.");
 316
 317 static PyMemberDef pyrf_comm_event__members[] = {
 318         sample_members
 319         member_def(perf_event_header, type, T_UINT, "event type"),
 320         member_def(perf_record_comm, pid, T_UINT, "event pid"),
 321         member_def(perf_record_comm, tid, T_UINT, "event tid"),
 322         member_def(perf_record_comm, comm, T_STRING_INPLACE, "process name"),
 323         { .name = NULL, },
 324 };
 325
 326 static PyObject *pyrf_comm_event__repr(struct pyrf_event *pevent)
 327 {
 328         return _PyUnicode_FromFormat("{ type: comm, pid: %u, tid: %u, comm: %s }",
 329                                    pevent->event.comm.pid,
 330                                    pevent->event.comm.tid,
 331                                    pevent->event.comm.comm);
 332 }
 333
 334 static PyTypeObject pyrf_comm_event__type = {
 335         PyVarObject_HEAD_INIT(NULL, 0)
 336         .tp_name        = "perf.comm_event",
 337         .tp_basicsize   = sizeof(struct pyrf_event),
 338         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 339         .tp_doc         = pyrf_comm_event__doc,
 340         .tp_members     = pyrf_comm_event__members,
 341         .tp_repr        = (reprfunc)pyrf_comm_event__repr,
 342 };
 343
 344 static char pyrf_throttle_event__doc[] = PyDoc_STR("perf throttle event object.");
 345
 346 static PyMemberDef pyrf_throttle_event__members[] = {
 347         sample_members
 348         member_def(perf_event_header, type, T_UINT, "event type"),
 349         member_def(perf_record_throttle, time, T_ULONGLONG, "timestamp"),
 350         member_def(perf_record_throttle, id, T_ULONGLONG, "event id"),
 351         member_def(perf_record_throttle, stream_id, T_ULONGLONG, "event stream id"),
 352         { .name = NULL, },
 353 };
 354
 355 static PyObject *pyrf_throttle_event__repr(struct pyrf_event *pevent)
 356 {
 357         struct perf_record_throttle *te = (struct perf_record_throttle *)(&pevent->event.header + 1);
 358
 359         return _PyUnicode_FromFormat("{ type: %sthrottle, time: %" PRI_lu64 ", id: %" PRI_lu64
 360                                    ", stream_id: %" PRI_lu64 " }",
 361                                    pevent->event.header.type == PERF_RECORD_THROTTLE ? "" : "un",
 362                                    te->time, te->id, te->stream_id);
 363 }
 364
 365 static PyTypeObject pyrf_throttle_event__type = {
 366         PyVarObject_HEAD_INIT(NULL, 0)
 367         .tp_name        = "perf.throttle_event",
 368         .tp_basicsize   = sizeof(struct pyrf_event),
 369         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 370         .tp_doc         = pyrf_throttle_event__doc,
 371         .tp_members     = pyrf_throttle_event__members,
 372         .tp_repr        = (reprfunc)pyrf_throttle_event__repr,
 373 };
 374
 375 static char pyrf_lost_event__doc[] = PyDoc_STR("perf lost event object.");
 376
 377 static PyMemberDef pyrf_lost_event__members[] = {
 378         sample_members
 379         member_def(perf_record_lost, id, T_ULONGLONG, "event id"),
 380         member_def(perf_record_lost, lost, T_ULONGLONG, "number of lost events"),
 381         { .name = NULL, },
 382 };
 383
 384 static PyObject *pyrf_lost_event__repr(struct pyrf_event *pevent)
 385 {
 386         PyObject *ret;
 387         char *s;
 388
 389         if (asprintf(&s, "{ type: lost, id: %#" PRI_lx64 ", "
 390                          "lost: %#" PRI_lx64 " }",
 391                      pevent->event.lost.id, pevent->event.lost.lost) < 0) {
 392                 ret = PyErr_NoMemory();
 393         } else {
 394                 ret = _PyUnicode_FromString(s);
 395                 free(s);
 396         }
 397         return ret;
 398 }
 399
 400 static PyTypeObject pyrf_lost_event__type = {
 401         PyVarObject_HEAD_INIT(NULL, 0)
 402         .tp_name        = "perf.lost_event",
 403         .tp_basicsize   = sizeof(struct pyrf_event),
 404         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 405         .tp_doc         = pyrf_lost_event__doc,
 406         .tp_members     = pyrf_lost_event__members,
 407         .tp_repr        = (reprfunc)pyrf_lost_event__repr,
 408 };
 409
 410 static char pyrf_read_event__doc[] = PyDoc_STR("perf read event object.");
 411
 412 static PyMemberDef pyrf_read_event__members[] = {
 413         sample_members
 414         member_def(perf_record_read, pid, T_UINT, "event pid"),
 415         member_def(perf_record_read, tid, T_UINT, "event tid"),
 416         { .name = NULL, },
 417 };
 418
 419 static PyObject *pyrf_read_event__repr(struct pyrf_event *pevent)
 420 {
 421         return _PyUnicode_FromFormat("{ type: read, pid: %u, tid: %u }",
 422                                    pevent->event.read.pid,
 423                                    pevent->event.read.tid);
 424         /*
 425          * FIXME: return the array of read values,
 426          * making this method useful ;-)
 427          */
 428 }
 429
 430 static PyTypeObject pyrf_read_event__type = {
 431         PyVarObject_HEAD_INIT(NULL, 0)
 432         .tp_name        = "perf.read_event",
 433         .tp_basicsize   = sizeof(struct pyrf_event),
 434         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 435         .tp_doc         = pyrf_read_event__doc,
 436         .tp_members     = pyrf_read_event__members,
 437         .tp_repr        = (reprfunc)pyrf_read_event__repr,
 438 };
 439
 440 static char pyrf_sample_event__doc[] = PyDoc_STR("perf sample event object.");
 441
 442 static PyMemberDef pyrf_sample_event__members[] = {
 443         sample_members
 444         member_def(perf_event_header, type, T_UINT, "event type"),
 445         { .name = NULL, },
 446 };
 447
 448 static PyObject *pyrf_sample_event__repr(struct pyrf_event *pevent)
 449 {
 450         PyObject *ret;
 451         char *s;
 452
 453         if (asprintf(&s, "{ type: sample }") < 0) {
 454                 ret = PyErr_NoMemory();
 455         } else {
 456                 ret = _PyUnicode_FromString(s);
 457                 free(s);
 458         }
 459         return ret;
 460 }
 461
 462 #ifdef HAVE_LIBTRACEEVENT
 463 static bool is_tracepoint(struct pyrf_event *pevent)
 464 {
 465         return pevent->evsel->core.attr.type == PERF_TYPE_TRACEPOINT;
 466 }
 467
 468 static PyObject*
 469 tracepoint_field(struct pyrf_event *pe, struct tep_format_field *field)
 470 {
 471         struct tep_handle *pevent = field->event->tep;
 472         void *data = pe->sample.raw_data;
 473         PyObject *ret = NULL;
 474         unsigned long long val;
 475         unsigned int offset, len;
 476
 477         if (field->flags & TEP_FIELD_IS_ARRAY) {
 478                 offset = field->offset;
 479                 len    = field->size;
 480                 if (field->flags & TEP_FIELD_IS_DYNAMIC) {
 481                         val     = tep_read_number(pevent, data + offset, len);
 482                         offset  = val;
 483                         len     = offset >> 16;
 484                         offset &= 0xffff;
 485                         if (tep_field_is_relative(field->flags))
 486                                 offset += field->offset + field->size;
 487                 }
 488                 if (field->flags & TEP_FIELD_IS_STRING &&
 489                     is_printable_array(data + offset, len)) {
 490                         ret = _PyUnicode_FromString((char *)data + offset);
 491                 } else {
 492                         ret = PyByteArray_FromStringAndSize((const char *) data + offset, len);
 493                         field->flags &= ~TEP_FIELD_IS_STRING;
 494                 }
 495         } else {
 496                 val = tep_read_number(pevent, data + field->offset,
 497                                       field->size);
 498                 if (field->flags & TEP_FIELD_IS_POINTER)
 499                         ret = PyLong_FromUnsignedLong((unsigned long) val);
 500                 else if (field->flags & TEP_FIELD_IS_SIGNED)
 501                         ret = PyLong_FromLong((long) val);
 502                 else
 503                         ret = PyLong_FromUnsignedLong((unsigned long) val);
 504         }
 505
 506         return ret;
 507 }
 508
 509 static PyObject*
 510 get_tracepoint_field(struct pyrf_event *pevent, PyObject *attr_name)
 511 {
 512         const char *str = _PyUnicode_AsString(PyObject_Str(attr_name));
 513         struct evsel *evsel = pevent->evsel;
 514         struct tep_format_field *field;
 515
 516         if (!evsel->tp_format) {
 517                 struct tep_event *tp_format;
 518
 519                 tp_format = trace_event__tp_format_id(evsel->core.attr.config);
 520                 if (IS_ERR_OR_NULL(tp_format))
 521                         return NULL;
 522
 523                 evsel->tp_format = tp_format;
 524         }
 525
 526         field = tep_find_any_field(evsel->tp_format, str);
 527         if (!field)
 528                 return NULL;
 529
 530         return tracepoint_field(pevent, field);
 531 }
 532 #endif /* HAVE_LIBTRACEEVENT */
 533
 534 static PyObject*
 535 pyrf_sample_event__getattro(struct pyrf_event *pevent, PyObject *attr_name)
 536 {
 537         PyObject *obj = NULL;
 538
 539 #ifdef HAVE_LIBTRACEEVENT
 540         if (is_tracepoint(pevent))
 541                 obj = get_tracepoint_field(pevent, attr_name);
 542 #endif
 543
 544         return obj ?: PyObject_GenericGetAttr((PyObject *) pevent, attr_name);
 545 }
 546
 547 static PyTypeObject pyrf_sample_event__type = {
 548         PyVarObject_HEAD_INIT(NULL, 0)
 549         .tp_name        = "perf.sample_event",
 550         .tp_basicsize   = sizeof(struct pyrf_event),
 551         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 552         .tp_doc         = pyrf_sample_event__doc,
 553         .tp_members     = pyrf_sample_event__members,
 554         .tp_repr        = (reprfunc)pyrf_sample_event__repr,
 555         .tp_getattro    = (getattrofunc) pyrf_sample_event__getattro,
 556 };
 557
 558 static char pyrf_context_switch_event__doc[] = PyDoc_STR("perf context_switch event object.");
 559
 560 static PyMemberDef pyrf_context_switch_event__members[] = {
 561         sample_members
 562         member_def(perf_event_header, type, T_UINT, "event type"),
 563         member_def(perf_record_switch, next_prev_pid, T_UINT, "next/prev pid"),
 564         member_def(perf_record_switch, next_prev_tid, T_UINT, "next/prev tid"),
 565         { .name = NULL, },
 566 };
 567
 568 static PyObject *pyrf_context_switch_event__repr(struct pyrf_event *pevent)
 569 {
 570         PyObject *ret;
 571         char *s;
 572
 573         if (asprintf(&s, "{ type: context_switch, next_prev_pid: %u, next_prev_tid: %u, switch_out: %u }",
 574                      pevent->event.context_switch.next_prev_pid,
 575                      pevent->event.context_switch.next_prev_tid,
 576                      !!(pevent->event.header.misc & PERF_RECORD_MISC_SWITCH_OUT)) < 0) {
 577                 ret = PyErr_NoMemory();
 578         } else {
 579                 ret = _PyUnicode_FromString(s);
 580                 free(s);
 581         }
 582         return ret;
 583 }
 584
 585 static PyTypeObject pyrf_context_switch_event__type = {
 586         PyVarObject_HEAD_INIT(NULL, 0)
 587         .tp_name        = "perf.context_switch_event",
 588         .tp_basicsize   = sizeof(struct pyrf_event),
 589         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 590         .tp_doc         = pyrf_context_switch_event__doc,
 591         .tp_members     = pyrf_context_switch_event__members,
 592         .tp_repr        = (reprfunc)pyrf_context_switch_event__repr,
 593 };
 594
 595 static int pyrf_event__setup_types(void)
 596 {
 597         int err;
 598         pyrf_mmap_event__type.tp_new =
 599         pyrf_task_event__type.tp_new =
 600         pyrf_comm_event__type.tp_new =
 601         pyrf_lost_event__type.tp_new =
 602         pyrf_read_event__type.tp_new =
 603         pyrf_sample_event__type.tp_new =
 604         pyrf_context_switch_event__type.tp_new =
 605         pyrf_throttle_event__type.tp_new = PyType_GenericNew;
 606         err = PyType_Ready(&pyrf_mmap_event__type);
 607         if (err < 0)
 608                 goto out;
 609         err = PyType_Ready(&pyrf_lost_event__type);
 610         if (err < 0)
 611                 goto out;
 612         err = PyType_Ready(&pyrf_task_event__type);
 613         if (err < 0)
 614                 goto out;
 615         err = PyType_Ready(&pyrf_comm_event__type);
 616         if (err < 0)
 617                 goto out;
 618         err = PyType_Ready(&pyrf_throttle_event__type);
 619         if (err < 0)
 620                 goto out;
 621         err = PyType_Ready(&pyrf_read_event__type);
 622         if (err < 0)
 623                 goto out;
 624         err = PyType_Ready(&pyrf_sample_event__type);
 625         if (err < 0)
 626                 goto out;
 627         err = PyType_Ready(&pyrf_context_switch_event__type);
 628         if (err < 0)
 629                 goto out;
 630 out:
 631         return err;
 632 }
 633
 634 static PyTypeObject *pyrf_event__type[] = {
 635         [PERF_RECORD_MMAP]       = &pyrf_mmap_event__type,
 636         [PERF_RECORD_LOST]       = &pyrf_lost_event__type,
 637         [PERF_RECORD_COMM]       = &pyrf_comm_event__type,
 638         [PERF_RECORD_EXIT]       = &pyrf_task_event__type,
 639         [PERF_RECORD_THROTTLE]   = &pyrf_throttle_event__type,
 640         [PERF_RECORD_UNTHROTTLE] = &pyrf_throttle_event__type,
 641         [PERF_RECORD_FORK]       = &pyrf_task_event__type,
 642         [PERF_RECORD_READ]       = &pyrf_read_event__type,
 643         [PERF_RECORD_SAMPLE]     = &pyrf_sample_event__type,
 644         [PERF_RECORD_SWITCH]     = &pyrf_context_switch_event__type,
 645         [PERF_RECORD_SWITCH_CPU_WIDE]  = &pyrf_context_switch_event__type,
 646 };
 647
 648 static PyObject *pyrf_event__new(union perf_event *event)
 649 {
 650         struct pyrf_event *pevent;
 651         PyTypeObject *ptype;
 652
 653         if ((event->header.type < PERF_RECORD_MMAP ||
 654              event->header.type > PERF_RECORD_SAMPLE) &&
 655             !(event->header.type == PERF_RECORD_SWITCH ||
 656               event->header.type == PERF_RECORD_SWITCH_CPU_WIDE))
 657                 return NULL;
 658
 659         ptype = pyrf_event__type[event->header.type];
 660         pevent = PyObject_New(struct pyrf_event, ptype);
 661         if (pevent != NULL)
 662                 memcpy(&pevent->event, event, event->header.size);
 663         return (PyObject *)pevent;
 664 }
 665
 666 struct pyrf_cpu_map {
 667         PyObject_HEAD
 668
 669         struct perf_cpu_map *cpus;
 670 };
 671
 672 static int pyrf_cpu_map__init(struct pyrf_cpu_map *pcpus,
 673                               PyObject *args, PyObject *kwargs)
 674 {
 675         static char *kwlist[] = { "cpustr", NULL };
 676         char *cpustr = NULL;
 677
 678         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|s",
 679                                          kwlist, &cpustr))
 680                 return -1;
 681
 682         pcpus->cpus = perf_cpu_map__new(cpustr);
 683         if (pcpus->cpus == NULL)
 684                 return -1;
 685         return 0;
 686 }
 687
 688 static void pyrf_cpu_map__delete(struct pyrf_cpu_map *pcpus)
 689 {
 690         perf_cpu_map__put(pcpus->cpus);
 691         Py_TYPE(pcpus)->tp_free((PyObject*)pcpus);
 692 }
 693
 694 static Py_ssize_t pyrf_cpu_map__length(PyObject *obj)
 695 {
 696         struct pyrf_cpu_map *pcpus = (void *)obj;
 697
 698         return perf_cpu_map__nr(pcpus->cpus);
 699 }
 700
 701 static PyObject *pyrf_cpu_map__item(PyObject *obj, Py_ssize_t i)
 702 {
 703         struct pyrf_cpu_map *pcpus = (void *)obj;
 704
 705         if (i >= perf_cpu_map__nr(pcpus->cpus))
 706                 return NULL;
 707
 708         return Py_BuildValue("i", perf_cpu_map__cpu(pcpus->cpus, i).cpu);
 709 }
 710
 711 static PySequenceMethods pyrf_cpu_map__sequence_methods = {
 712         .sq_length = pyrf_cpu_map__length,
 713         .sq_item   = pyrf_cpu_map__item,
 714 };
 715
 716 static char pyrf_cpu_map__doc[] = PyDoc_STR("cpu map object.");
 717
 718 static PyTypeObject pyrf_cpu_map__type = {
 719         PyVarObject_HEAD_INIT(NULL, 0)
 720         .tp_name        = "perf.cpu_map",
 721         .tp_basicsize   = sizeof(struct pyrf_cpu_map),
 722         .tp_dealloc     = (destructor)pyrf_cpu_map__delete,
 723         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 724         .tp_doc         = pyrf_cpu_map__doc,
 725         .tp_as_sequence = &pyrf_cpu_map__sequence_methods,
 726         .tp_init        = (initproc)pyrf_cpu_map__init,
 727 };
 728
 729 static int pyrf_cpu_map__setup_types(void)
 730 {
 731         pyrf_cpu_map__type.tp_new = PyType_GenericNew;
 732         return PyType_Ready(&pyrf_cpu_map__type);
 733 }
 734
 735 struct pyrf_thread_map {
 736         PyObject_HEAD
 737
 738         struct perf_thread_map *threads;
 739 };
 740
 741 static int pyrf_thread_map__init(struct pyrf_thread_map *pthreads,
 742                                  PyObject *args, PyObject *kwargs)
 743 {
 744         static char *kwlist[] = { "pid", "tid", "uid", NULL };
 745         int pid = -1, tid = -1, uid = UINT_MAX;
 746
 747         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|iii",
 748                                          kwlist, &pid, &tid, &uid))
 749                 return -1;
 750
 751         pthreads->threads = thread_map__new(pid, tid, uid);
 752         if (pthreads->threads == NULL)
 753                 return -1;
 754         return 0;
 755 }
 756
 757 static void pyrf_thread_map__delete(struct pyrf_thread_map *pthreads)
 758 {
 759         perf_thread_map__put(pthreads->threads);
 760         Py_TYPE(pthreads)->tp_free((PyObject*)pthreads);
 761 }
 762
 763 static Py_ssize_t pyrf_thread_map__length(PyObject *obj)
 764 {
 765         struct pyrf_thread_map *pthreads = (void *)obj;
 766
 767         return perf_thread_map__nr(pthreads->threads);
 768 }
 769
 770 static PyObject *pyrf_thread_map__item(PyObject *obj, Py_ssize_t i)
 771 {
 772         struct pyrf_thread_map *pthreads = (void *)obj;
 773
 774         if (i >= perf_thread_map__nr(pthreads->threads))
 775                 return NULL;
 776
 777         return Py_BuildValue("i", perf_thread_map__pid(pthreads->threads, i));
 778 }
 779
 780 static PySequenceMethods pyrf_thread_map__sequence_methods = {
 781         .sq_length = pyrf_thread_map__length,
 782         .sq_item   = pyrf_thread_map__item,
 783 };
 784
 785 static char pyrf_thread_map__doc[] = PyDoc_STR("thread map object.");
 786
 787 static PyTypeObject pyrf_thread_map__type = {
 788         PyVarObject_HEAD_INIT(NULL, 0)
 789         .tp_name        = "perf.thread_map",
 790         .tp_basicsize   = sizeof(struct pyrf_thread_map),
 791         .tp_dealloc     = (destructor)pyrf_thread_map__delete,
 792         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 793         .tp_doc         = pyrf_thread_map__doc,
 794         .tp_as_sequence = &pyrf_thread_map__sequence_methods,
 795         .tp_init        = (initproc)pyrf_thread_map__init,
 796 };
 797
 798 static int pyrf_thread_map__setup_types(void)
 799 {
 800         pyrf_thread_map__type.tp_new = PyType_GenericNew;
 801         return PyType_Ready(&pyrf_thread_map__type);
 802 }
 803
 804 struct pyrf_evsel {
 805         PyObject_HEAD
 806
 807         struct evsel evsel;
 808 };
 809
 810 static int pyrf_evsel__init(struct pyrf_evsel *pevsel,
 811                             PyObject *args, PyObject *kwargs)
 812 {
 813         struct perf_event_attr attr = {
 814                 .type = PERF_TYPE_HARDWARE,
 815                 .config = PERF_COUNT_HW_CPU_CYCLES,
 816                 .sample_type = PERF_SAMPLE_PERIOD | PERF_SAMPLE_TID,
 817         };
 818         static char *kwlist[] = {
 819                 "type",
 820                 "config",
 821                 "sample_freq",
 822                 "sample_period",
 823                 "sample_type",
 824                 "read_format",
 825                 "disabled",
 826                 "inherit",
 827                 "pinned",
 828                 "exclusive",
 829                 "exclude_user",
 830                 "exclude_kernel",
 831                 "exclude_hv",
 832                 "exclude_idle",
 833                 "mmap",
 834                 "context_switch",
 835                 "comm",
 836                 "freq",
 837                 "inherit_stat",
 838                 "enable_on_exec",
 839                 "task",
 840                 "watermark",
 841                 "precise_ip",
 842                 "mmap_data",
 843                 "sample_id_all",
 844                 "wakeup_events",
 845                 "bp_type",
 846                 "bp_addr",
 847                 "bp_len",
 848                  NULL
 849         };
 850         u64 sample_period = 0;
 851         u32 disabled = 0,
 852             inherit = 0,
 853             pinned = 0,
 854             exclusive = 0,
 855             exclude_user = 0,
 856             exclude_kernel = 0,
 857             exclude_hv = 0,
 858             exclude_idle = 0,
 859             mmap = 0,
 860             context_switch = 0,
 861             comm = 0,
 862             freq = 1,
 863             inherit_stat = 0,
 864             enable_on_exec = 0,
 865             task = 0,
 866             watermark = 0,
 867             precise_ip = 0,
 868             mmap_data = 0,
 869             sample_id_all = 1;
 870         int idx = 0;
 871
 872         if (!PyArg_ParseTupleAndKeywords(args, kwargs,
 873                                          "|iKiKKiiiiiiiiiiiiiiiiiiiiiiKK", kwlist,
 874                                          &attr.type, &attr.config, &attr.sample_freq,
 875                                          &sample_period, &attr.sample_type,
 876                                          &attr.read_format, &disabled, &inherit,
 877                                          &pinned, &exclusive, &exclude_user,
 878                                          &exclude_kernel, &exclude_hv, &exclude_idle,
 879                                          &mmap, &context_switch, &comm, &freq, &inherit_stat,
 880                                          &enable_on_exec, &task, &watermark,
 881                                          &precise_ip, &mmap_data, &sample_id_all,
 882                                          &attr.wakeup_events, &attr.bp_type,
 883                                          &attr.bp_addr, &attr.bp_len, &idx))
 884                 return -1;
 885
 886         /* union... */
 887         if (sample_period != 0) {
 888                 if (attr.sample_freq != 0)
 889                         return -1; /* FIXME: throw right exception */
 890                 attr.sample_period = sample_period;
 891         }
 892
 893         /* Bitfields */
 894         attr.disabled       = disabled;
 895         attr.inherit        = inherit;
 896         attr.pinned         = pinned;
 897         attr.exclusive      = exclusive;
 898         attr.exclude_user   = exclude_user;
 899         attr.exclude_kernel = exclude_kernel;
 900         attr.exclude_hv     = exclude_hv;
 901         attr.exclude_idle   = exclude_idle;
 902         attr.mmap           = mmap;
 903         attr.context_switch = context_switch;
 904         attr.comm           = comm;
 905         attr.freq           = freq;
 906         attr.inherit_stat   = inherit_stat;
 907         attr.enable_on_exec = enable_on_exec;
 908         attr.task           = task;
 909         attr.watermark      = watermark;
 910         attr.precise_ip     = precise_ip;
 911         attr.mmap_data      = mmap_data;
 912         attr.sample_id_all  = sample_id_all;
 913         attr.size           = sizeof(attr);
 914
 915         evsel__init(&pevsel->evsel, &attr, idx);
 916         return 0;
 917 }
 918
 919 static void pyrf_evsel__delete(struct pyrf_evsel *pevsel)
 920 {
 921         evsel__exit(&pevsel->evsel);
 922         Py_TYPE(pevsel)->tp_free((PyObject*)pevsel);
 923 }
 924
 925 static PyObject *pyrf_evsel__open(struct pyrf_evsel *pevsel,
 926                                   PyObject *args, PyObject *kwargs)
 927 {
 928         struct evsel *evsel = &pevsel->evsel;
 929         struct perf_cpu_map *cpus = NULL;
 930         struct perf_thread_map *threads = NULL;
 931         PyObject *pcpus = NULL, *pthreads = NULL;
 932         int group = 0, inherit = 0;
 933         static char *kwlist[] = { "cpus", "threads", "group", "inherit", NULL };
 934
 935         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|OOii", kwlist,
 936                                          &pcpus, &pthreads, &group, &inherit))
 937                 return NULL;
 938
 939         if (pthreads != NULL)
 940                 threads = ((struct pyrf_thread_map *)pthreads)->threads;
 941
 942         if (pcpus != NULL)
 943                 cpus = ((struct pyrf_cpu_map *)pcpus)->cpus;
 944
 945         evsel->core.attr.inherit = inherit;
 946         /*
 947          * This will group just the fds for this single evsel, to group
 948          * multiple events, use evlist.open().
 949          */
 950         if (evsel__open(evsel, cpus, threads) < 0) {
 951                 PyErr_SetFromErrno(PyExc_OSError);
 952                 return NULL;
 953         }
 954
 955         Py_INCREF(Py_None);
 956         return Py_None;
 957 }
 958
 959 static PyMethodDef pyrf_evsel__methods[] = {
 960         {
 961                 .ml_name  = "open",
 962                 .ml_meth  = (PyCFunction)pyrf_evsel__open,
 963                 .ml_flags = METH_VARARGS | METH_KEYWORDS,
 964                 .ml_doc   = PyDoc_STR("open the event selector file descriptor table.")
 965         },
 966         { .ml_name = NULL, }
 967 };
 968
 969 static char pyrf_evsel__doc[] = PyDoc_STR("perf event selector list object.");
 970
 971 static PyTypeObject pyrf_evsel__type = {
 972         PyVarObject_HEAD_INIT(NULL, 0)
 973         .tp_name        = "perf.evsel",
 974         .tp_basicsize   = sizeof(struct pyrf_evsel),
 975         .tp_dealloc     = (destructor)pyrf_evsel__delete,
 976         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
 977         .tp_doc         = pyrf_evsel__doc,
 978         .tp_methods     = pyrf_evsel__methods,
 979         .tp_init        = (initproc)pyrf_evsel__init,
 980 };
 981
 982 static int pyrf_evsel__setup_types(void)
 983 {
 984         pyrf_evsel__type.tp_new = PyType_GenericNew;
 985         return PyType_Ready(&pyrf_evsel__type);
 986 }
 987
 988 struct pyrf_evlist {
 989         PyObject_HEAD
 990
 991         struct evlist evlist;
 992 };
 993
 994 static int pyrf_evlist__init(struct pyrf_evlist *pevlist,
 995                              PyObject *args, PyObject *kwargs __maybe_unused)
 996 {
 997         PyObject *pcpus = NULL, *pthreads = NULL;
 998         struct perf_cpu_map *cpus;
 999         struct perf_thread_map *threads;
1000
1001         if (!PyArg_ParseTuple(args, "OO", &pcpus, &pthreads))
1002                 return -1;
1003
1004         threads = ((struct pyrf_thread_map *)pthreads)->threads;
1005         cpus = ((struct pyrf_cpu_map *)pcpus)->cpus;
1006         evlist__init(&pevlist->evlist, cpus, threads);
1007         return 0;
1008 }
1009
1010 static void pyrf_evlist__delete(struct pyrf_evlist *pevlist)
1011 {
1012         evlist__exit(&pevlist->evlist);
1013         Py_TYPE(pevlist)->tp_free((PyObject*)pevlist);
1014 }
1015
1016 static PyObject *pyrf_evlist__mmap(struct pyrf_evlist *pevlist,
1017                                    PyObject *args, PyObject *kwargs)
1018 {
1019         struct evlist *evlist = &pevlist->evlist;
1020         static char *kwlist[] = { "pages", "overwrite", NULL };
1021         int pages = 128, overwrite = false;
1022
1023         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|ii", kwlist,
1024                                          &pages, &overwrite))
1025                 return NULL;
1026
1027         if (evlist__mmap(evlist, pages) < 0) {
1028                 PyErr_SetFromErrno(PyExc_OSError);
1029                 return NULL;
1030         }
1031
1032         Py_INCREF(Py_None);
1033         return Py_None;
1034 }
1035
1036 static PyObject *pyrf_evlist__poll(struct pyrf_evlist *pevlist,
1037                                    PyObject *args, PyObject *kwargs)
1038 {
1039         struct evlist *evlist = &pevlist->evlist;
1040         static char *kwlist[] = { "timeout", NULL };
1041         int timeout = -1, n;
1042
1043         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|i", kwlist, &timeout))
1044                 return NULL;
1045
1046         n = evlist__poll(evlist, timeout);
1047         if (n < 0) {
1048                 PyErr_SetFromErrno(PyExc_OSError);
1049                 return NULL;
1050         }
1051
1052         return Py_BuildValue("i", n);
1053 }
1054
1055 static PyObject *pyrf_evlist__get_pollfd(struct pyrf_evlist *pevlist,
1056                                          PyObject *args __maybe_unused,
1057                                          PyObject *kwargs __maybe_unused)
1058 {
1059         struct evlist *evlist = &pevlist->evlist;
1060         PyObject *list = PyList_New(0);
1061         int i;
1062
1063         for (i = 0; i < evlist->core.pollfd.nr; ++i) {
1064                 PyObject *file;
1065 #if PY_MAJOR_VERSION < 3
1066                 FILE *fp = fdopen(evlist->core.pollfd.entries[i].fd, "r");
1067
1068                 if (fp == NULL)
1069                         goto free_list;
1070
1071                 file = PyFile_FromFile(fp, "perf", "r", NULL);
1072 #else
1073                 file = PyFile_FromFd(evlist->core.pollfd.entries[i].fd, "perf", "r", -1,
1074                                      NULL, NULL, NULL, 0);
1075 #endif
1076                 if (file == NULL)
1077                         goto free_list;
1078
1079                 if (PyList_Append(list, file) != 0) {
1080                         Py_DECREF(file);
1081                         goto free_list;
1082                 }
1083
1084                 Py_DECREF(file);
1085         }
1086
1087         return list;
1088 free_list:
1089         return PyErr_NoMemory();
1090 }
1091
1092
1093 static PyObject *pyrf_evlist__add(struct pyrf_evlist *pevlist,
1094                                   PyObject *args,
1095                                   PyObject *kwargs __maybe_unused)
1096 {
1097         struct evlist *evlist = &pevlist->evlist;
1098         PyObject *pevsel;
1099         struct evsel *evsel;
1100
1101         if (!PyArg_ParseTuple(args, "O", &pevsel))
1102                 return NULL;
1103
1104         Py_INCREF(pevsel);
1105         evsel = &((struct pyrf_evsel *)pevsel)->evsel;
1106         evsel->core.idx = evlist->core.nr_entries;
1107         evlist__add(evlist, evsel);
1108
1109         return Py_BuildValue("i", evlist->core.nr_entries);
1110 }
1111
1112 static struct mmap *get_md(struct evlist *evlist, int cpu)
1113 {
1114         int i;
1115
1116         for (i = 0; i < evlist->core.nr_mmaps; i++) {
1117                 struct mmap *md = &evlist->mmap[i];
1118
1119                 if (md->core.cpu.cpu == cpu)
1120                         return md;
1121         }
1122
1123         return NULL;
1124 }
1125
1126 static PyObject *pyrf_evlist__read_on_cpu(struct pyrf_evlist *pevlist,
1127                                           PyObject *args, PyObject *kwargs)
1128 {
1129         struct evlist *evlist = &pevlist->evlist;
1130         union perf_event *event;
1131         int sample_id_all = 1, cpu;
1132         static char *kwlist[] = { "cpu", "sample_id_all", NULL };
1133         struct mmap *md;
1134         int err;
1135
1136         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "i|i", kwlist,
1137                                          &cpu, &sample_id_all))
1138                 return NULL;
1139
1140         md = get_md(evlist, cpu);
1141         if (!md)
1142                 return NULL;
1143
1144         if (perf_mmap__read_init(&md->core) < 0)
1145                 goto end;
1146
1147         event = perf_mmap__read_event(&md->core);
1148         if (event != NULL) {
1149                 PyObject *pyevent = pyrf_event__new(event);
1150                 struct pyrf_event *pevent = (struct pyrf_event *)pyevent;
1151                 struct evsel *evsel;
1152
1153                 if (pyevent == NULL)
1154                         return PyErr_NoMemory();
1155
1156                 evsel = evlist__event2evsel(evlist, event);
1157                 if (!evsel) {
1158                         Py_INCREF(Py_None);
1159                         return Py_None;
1160                 }
1161
1162                 pevent->evsel = evsel;
1163
1164                 err = evsel__parse_sample(evsel, event, &pevent->sample);
1165
1166                 /* Consume the even only after we parsed it out. */
1167                 perf_mmap__consume(&md->core);
1168
1169                 if (err)
1170                         return PyErr_Format(PyExc_OSError,
1171                                             "perf: can't parse sample, err=%d", err);
1172                 return pyevent;
1173         }
1174 end:
1175         Py_INCREF(Py_None);
1176         return Py_None;
1177 }
1178
1179 static PyObject *pyrf_evlist__open(struct pyrf_evlist *pevlist,
1180                                    PyObject *args, PyObject *kwargs)
1181 {
1182         struct evlist *evlist = &pevlist->evlist;
1183
1184         if (evlist__open(evlist) < 0) {
1185                 PyErr_SetFromErrno(PyExc_OSError);
1186                 return NULL;
1187         }
1188
1189         Py_INCREF(Py_None);
1190         return Py_None;
1191 }
1192
1193 static PyMethodDef pyrf_evlist__methods[] = {
1194         {
1195                 .ml_name  = "mmap",
1196                 .ml_meth  = (PyCFunction)pyrf_evlist__mmap,
1197                 .ml_flags = METH_VARARGS | METH_KEYWORDS,
1198                 .ml_doc   = PyDoc_STR("mmap the file descriptor table.")
1199         },
1200         {
1201                 .ml_name  = "open",
1202                 .ml_meth  = (PyCFunction)pyrf_evlist__open,
1203                 .ml_flags = METH_VARARGS | METH_KEYWORDS,
1204                 .ml_doc   = PyDoc_STR("open the file descriptors.")
1205         },
1206         {
1207                 .ml_name  = "poll",
1208                 .ml_meth  = (PyCFunction)pyrf_evlist__poll,
1209                 .ml_flags = METH_VARARGS | METH_KEYWORDS,
1210                 .ml_doc   = PyDoc_STR("poll the file descriptor table.")
1211         },
1212         {
1213                 .ml_name  = "get_pollfd",
1214                 .ml_meth  = (PyCFunction)pyrf_evlist__get_pollfd,
1215                 .ml_flags = METH_VARARGS | METH_KEYWORDS,
1216                 .ml_doc   = PyDoc_STR("get the poll file descriptor table.")
1217         },
1218         {
1219                 .ml_name  = "add",
1220                 .ml_meth  = (PyCFunction)pyrf_evlist__add,
1221                 .ml_flags = METH_VARARGS | METH_KEYWORDS,
1222                 .ml_doc   = PyDoc_STR("adds an event selector to the list.")
1223         },
1224         {
1225                 .ml_name  = "read_on_cpu",
1226                 .ml_meth  = (PyCFunction)pyrf_evlist__read_on_cpu,
1227                 .ml_flags = METH_VARARGS | METH_KEYWORDS,
1228                 .ml_doc   = PyDoc_STR("reads an event.")
1229         },
1230         { .ml_name = NULL, }
1231 };
1232
1233 static Py_ssize_t pyrf_evlist__length(PyObject *obj)
1234 {
1235         struct pyrf_evlist *pevlist = (void *)obj;
1236
1237         return pevlist->evlist.core.nr_entries;
1238 }
1239
1240 static PyObject *pyrf_evlist__item(PyObject *obj, Py_ssize_t i)
1241 {
1242         struct pyrf_evlist *pevlist = (void *)obj;
1243         struct evsel *pos;
1244
1245         if (i >= pevlist->evlist.core.nr_entries)
1246                 return NULL;
1247
1248         evlist__for_each_entry(&pevlist->evlist, pos) {
1249                 if (i-- == 0)
1250                         break;
1251         }
1252
1253         return Py_BuildValue("O", container_of(pos, struct pyrf_evsel, evsel));
1254 }
1255
1256 static PySequenceMethods pyrf_evlist__sequence_methods = {
1257         .sq_length = pyrf_evlist__length,
1258         .sq_item   = pyrf_evlist__item,
1259 };
1260
1261 static char pyrf_evlist__doc[] = PyDoc_STR("perf event selector list object.");
1262
1263 static PyTypeObject pyrf_evlist__type = {
1264         PyVarObject_HEAD_INIT(NULL, 0)
1265         .tp_name        = "perf.evlist",
1266         .tp_basicsize   = sizeof(struct pyrf_evlist),
1267         .tp_dealloc     = (destructor)pyrf_evlist__delete,
1268         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
1269         .tp_as_sequence = &pyrf_evlist__sequence_methods,
1270         .tp_doc         = pyrf_evlist__doc,
1271         .tp_methods     = pyrf_evlist__methods,
1272         .tp_init        = (initproc)pyrf_evlist__init,
1273 };
1274
1275 static int pyrf_evlist__setup_types(void)
1276 {
1277         pyrf_evlist__type.tp_new = PyType_GenericNew;
1278         return PyType_Ready(&pyrf_evlist__type);
1279 }
1280
1281 #define PERF_CONST(name) { #name, PERF_##name }
1282
1283 static struct {
1284         const char *name;
1285         int         value;
1286 } perf__constants[] = {
1287         PERF_CONST(TYPE_HARDWARE),
1288         PERF_CONST(TYPE_SOFTWARE),
1289         PERF_CONST(TYPE_TRACEPOINT),
1290         PERF_CONST(TYPE_HW_CACHE),
1291         PERF_CONST(TYPE_RAW),
1292         PERF_CONST(TYPE_BREAKPOINT),
1293
1294         PERF_CONST(COUNT_HW_CPU_CYCLES),
1295         PERF_CONST(COUNT_HW_INSTRUCTIONS),
1296         PERF_CONST(COUNT_HW_CACHE_REFERENCES),
1297         PERF_CONST(COUNT_HW_CACHE_MISSES),
1298         PERF_CONST(COUNT_HW_BRANCH_INSTRUCTIONS),
1299         PERF_CONST(COUNT_HW_BRANCH_MISSES),
1300         PERF_CONST(COUNT_HW_BUS_CYCLES),
1301         PERF_CONST(COUNT_HW_CACHE_L1D),
1302         PERF_CONST(COUNT_HW_CACHE_L1I),
1303         PERF_CONST(COUNT_HW_CACHE_LL),
1304         PERF_CONST(COUNT_HW_CACHE_DTLB),
1305         PERF_CONST(COUNT_HW_CACHE_ITLB),
1306         PERF_CONST(COUNT_HW_CACHE_BPU),
1307         PERF_CONST(COUNT_HW_CACHE_OP_READ),
1308         PERF_CONST(COUNT_HW_CACHE_OP_WRITE),
1309         PERF_CONST(COUNT_HW_CACHE_OP_PREFETCH),
1310         PERF_CONST(COUNT_HW_CACHE_RESULT_ACCESS),
1311         PERF_CONST(COUNT_HW_CACHE_RESULT_MISS),
1312
1313         PERF_CONST(COUNT_HW_STALLED_CYCLES_FRONTEND),
1314         PERF_CONST(COUNT_HW_STALLED_CYCLES_BACKEND),
1315
1316         PERF_CONST(COUNT_SW_CPU_CLOCK),
1317         PERF_CONST(COUNT_SW_TASK_CLOCK),
1318         PERF_CONST(COUNT_SW_PAGE_FAULTS),
1319         PERF_CONST(COUNT_SW_CONTEXT_SWITCHES),
1320         PERF_CONST(COUNT_SW_CPU_MIGRATIONS),
1321         PERF_CONST(COUNT_SW_PAGE_FAULTS_MIN),
1322         PERF_CONST(COUNT_SW_PAGE_FAULTS_MAJ),
1323         PERF_CONST(COUNT_SW_ALIGNMENT_FAULTS),
1324         PERF_CONST(COUNT_SW_EMULATION_FAULTS),
1325         PERF_CONST(COUNT_SW_DUMMY),
1326
1327         PERF_CONST(SAMPLE_IP),
1328         PERF_CONST(SAMPLE_TID),
1329         PERF_CONST(SAMPLE_TIME),
1330         PERF_CONST(SAMPLE_ADDR),
1331         PERF_CONST(SAMPLE_READ),
1332         PERF_CONST(SAMPLE_CALLCHAIN),
1333         PERF_CONST(SAMPLE_ID),
1334         PERF_CONST(SAMPLE_CPU),
1335         PERF_CONST(SAMPLE_PERIOD),
1336         PERF_CONST(SAMPLE_STREAM_ID),
1337         PERF_CONST(SAMPLE_RAW),
1338
1339         PERF_CONST(FORMAT_TOTAL_TIME_ENABLED),
1340         PERF_CONST(FORMAT_TOTAL_TIME_RUNNING),
1341         PERF_CONST(FORMAT_ID),
1342         PERF_CONST(FORMAT_GROUP),
1343
1344         PERF_CONST(RECORD_MMAP),
1345         PERF_CONST(RECORD_LOST),
1346         PERF_CONST(RECORD_COMM),
1347         PERF_CONST(RECORD_EXIT),
1348         PERF_CONST(RECORD_THROTTLE),
1349         PERF_CONST(RECORD_UNTHROTTLE),
1350         PERF_CONST(RECORD_FORK),
1351         PERF_CONST(RECORD_READ),
1352         PERF_CONST(RECORD_SAMPLE),
1353         PERF_CONST(RECORD_MMAP2),
1354         PERF_CONST(RECORD_AUX),
1355         PERF_CONST(RECORD_ITRACE_START),
1356         PERF_CONST(RECORD_LOST_SAMPLES),
1357         PERF_CONST(RECORD_SWITCH),
1358         PERF_CONST(RECORD_SWITCH_CPU_WIDE),
1359
1360         PERF_CONST(RECORD_MISC_SWITCH_OUT),
1361         { .name = NULL, },
1362 };
1363
1364 static PyObject *pyrf__tracepoint(struct pyrf_evsel *pevsel,
1365                                   PyObject *args, PyObject *kwargs)
1366 {
1367 #ifndef HAVE_LIBTRACEEVENT
1368         return NULL;
1369 #else
1370         struct tep_event *tp_format;
1371         static char *kwlist[] = { "sys", "name", NULL };
1372         char *sys  = NULL;
1373         char *name = NULL;
1374
1375         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|ss", kwlist,
1376                                          &sys, &name))
1377                 return NULL;
1378
1379         tp_format = trace_event__tp_format(sys, name);
1380         if (IS_ERR(tp_format))
1381                 return _PyLong_FromLong(-1);
1382
1383         return _PyLong_FromLong(tp_format->id);
1384 #endif // HAVE_LIBTRACEEVENT
1385 }
1386
1387 static PyMethodDef perf__methods[] = {
1388         {
1389                 .ml_name  = "tracepoint",
1390                 .ml_meth  = (PyCFunction) pyrf__tracepoint,
1391                 .ml_flags = METH_VARARGS | METH_KEYWORDS,
1392                 .ml_doc   = PyDoc_STR("Get tracepoint config.")
1393         },
1394         { .ml_name = NULL, }
1395 };
1396
1397 #if PY_MAJOR_VERSION < 3
1398 PyMODINIT_FUNC initperf(void)
1399 #else
1400 PyMODINIT_FUNC PyInit_perf(void)
1401 #endif
1402 {
1403         PyObject *obj;
1404         int i;
1405         PyObject *dict;
1406 #if PY_MAJOR_VERSION < 3
1407         PyObject *module = Py_InitModule("perf", perf__methods);
1408 #else
1409         static struct PyModuleDef moduledef = {
1410                 PyModuleDef_HEAD_INIT,
1411                 "perf",                 /* m_name */
1412                 "",                     /* m_doc */
1413                 -1,                     /* m_size */
1414                 perf__methods,          /* m_methods */
1415                 NULL,                   /* m_reload */
1416                 NULL,                   /* m_traverse */
1417                 NULL,                   /* m_clear */
1418                 NULL,                   /* m_free */
1419         };
1420         PyObject *module = PyModule_Create(&moduledef);
1421 #endif
1422
1423         if (module == NULL ||
1424             pyrf_event__setup_types() < 0 ||
1425             pyrf_evlist__setup_types() < 0 ||
1426             pyrf_evsel__setup_types() < 0 ||
1427             pyrf_thread_map__setup_types() < 0 ||
1428             pyrf_cpu_map__setup_types() < 0)
1429 #if PY_MAJOR_VERSION < 3
1430                 return;
1431 #else
1432                 return module;
1433 #endif
1434
1435         /* The page_size is placed in util object. */
1436         page_size = sysconf(_SC_PAGE_SIZE);
1437
1438         Py_INCREF(&pyrf_evlist__type);
1439         PyModule_AddObject(module, "evlist", (PyObject*)&pyrf_evlist__type);
1440
1441         Py_INCREF(&pyrf_evsel__type);
1442         PyModule_AddObject(module, "evsel", (PyObject*)&pyrf_evsel__type);
1443
1444         Py_INCREF(&pyrf_mmap_event__type);
1445         PyModule_AddObject(module, "mmap_event", (PyObject *)&pyrf_mmap_event__type);
1446
1447         Py_INCREF(&pyrf_lost_event__type);
1448         PyModule_AddObject(module, "lost_event", (PyObject *)&pyrf_lost_event__type);
1449
1450         Py_INCREF(&pyrf_comm_event__type);
1451         PyModule_AddObject(module, "comm_event", (PyObject *)&pyrf_comm_event__type);
1452
1453         Py_INCREF(&pyrf_task_event__type);
1454         PyModule_AddObject(module, "task_event", (PyObject *)&pyrf_task_event__type);
1455
1456         Py_INCREF(&pyrf_throttle_event__type);
1457         PyModule_AddObject(module, "throttle_event", (PyObject *)&pyrf_throttle_event__type);
1458
1459         Py_INCREF(&pyrf_task_event__type);
1460         PyModule_AddObject(module, "task_event", (PyObject *)&pyrf_task_event__type);
1461
1462         Py_INCREF(&pyrf_read_event__type);
1463         PyModule_AddObject(module, "read_event", (PyObject *)&pyrf_read_event__type);
1464
1465         Py_INCREF(&pyrf_sample_event__type);
1466         PyModule_AddObject(module, "sample_event", (PyObject *)&pyrf_sample_event__type);
1467
1468         Py_INCREF(&pyrf_context_switch_event__type);
1469         PyModule_AddObject(module, "switch_event", (PyObject *)&pyrf_context_switch_event__type);
1470
1471         Py_INCREF(&pyrf_thread_map__type);
1472         PyModule_AddObject(module, "thread_map", (PyObject*)&pyrf_thread_map__type);
1473
1474         Py_INCREF(&pyrf_cpu_map__type);
1475         PyModule_AddObject(module, "cpu_map", (PyObject*)&pyrf_cpu_map__type);
1476
1477         dict = PyModule_GetDict(module);
1478         if (dict == NULL)
1479                 goto error;
1480
1481         for (i = 0; perf__constants[i].name != NULL; i++) {
1482                 obj = _PyLong_FromLong(perf__constants[i].value);
1483                 if (obj == NULL)
1484                         goto error;
1485                 PyDict_SetItemString(dict, perf__constants[i].name, obj);
1486                 Py_DECREF(obj);
1487         }
1488
1489 error:
1490         if (PyErr_Occurred())
1491                 PyErr_SetString(PyExc_ImportError, "perf: Init failed!");
1492 #if PY_MAJOR_VERSION >= 3
1493         return module;
1494 #endif
1495 }
1496
1497 /*
1498  * Dummy, to avoid dragging all the test_attr infrastructure in the python
1499  * binding.
1500  */
1501 void test_attr__open(struct perf_event_attr *attr, pid_t pid, struct perf_cpu cpu,
1502                      int fd, int group_fd, unsigned long flags)
1503 {
1504 }
1505
1506 void evlist__free_stats(struct evlist *evlist)
1507 {
1508 }