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TOMOYO Linux Cross Reference
Linux/tools/perf/util/python.c

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  1 // SPDX-License-Identifier: GPL-2.0
  2 #include <Python.h>
  3 #include <structmember.h>
  4 #include <inttypes.h>
  5 #include <poll.h>
  6 #include <linux/err.h>
  7 #include <perf/cpumap.h>
  8 #include <traceevent/event-parse.h>
  9 #include <perf/mmap.h>
 10 #include "evlist.h"
 11 #include "callchain.h"
 12 #include "evsel.h"
 13 #include "event.h"
 14 #include "print_binary.h"
 15 #include "thread_map.h"
 16 #include "trace-event.h"
 17 #include "mmap.h"
 18 #include "util/env.h"
 19 #include <internal/lib.h>
 20 #include "../perf-sys.h"
 21 
 22 #if PY_MAJOR_VERSION < 3
 23 #define _PyUnicode_FromString(arg) \
 24   PyString_FromString(arg)
 25 #define _PyUnicode_AsString(arg) \
 26   PyString_AsString(arg)
 27 #define _PyUnicode_FromFormat(...) \
 28   PyString_FromFormat(__VA_ARGS__)
 29 #define _PyLong_FromLong(arg) \
 30   PyInt_FromLong(arg)
 31 
 32 #else
 33 
 34 #define _PyUnicode_FromString(arg) \
 35   PyUnicode_FromString(arg)
 36 #define _PyUnicode_FromFormat(...) \
 37   PyUnicode_FromFormat(__VA_ARGS__)
 38 #define _PyLong_FromLong(arg) \
 39   PyLong_FromLong(arg)
 40 #endif
 41 
 42 #ifndef Py_TYPE
 43 #define Py_TYPE(ob) (((PyObject*)(ob))->ob_type)
 44 #endif
 45 
 46 /*
 47  * Provide these two so that we don't have to link against callchain.c and
 48  * start dragging hist.c, etc.
 49  */
 50 struct callchain_param callchain_param;
 51 
 52 int parse_callchain_record(const char *arg __maybe_unused,
 53                            struct callchain_param *param __maybe_unused)
 54 {
 55         return 0;
 56 }
 57 
 58 /*
 59  * Add this one here not to drag util/env.c
 60  */
 61 struct perf_env perf_env;
 62 
 63 /*
 64  * Support debug printing even though util/debug.c is not linked.  That means
 65  * implementing 'verbose' and 'eprintf'.
 66  */
 67 int verbose;
 68 int debug_peo_args;
 69 
 70 int eprintf(int level, int var, const char *fmt, ...);
 71 
 72 int eprintf(int level, int var, const char *fmt, ...)
 73 {
 74         va_list args;
 75         int ret = 0;
 76 
 77         if (var >= level) {
 78                 va_start(args, fmt);
 79                 ret = vfprintf(stderr, fmt, args);
 80                 va_end(args);
 81         }
 82 
 83         return ret;
 84 }
 85 
 86 /* Define PyVarObject_HEAD_INIT for python 2.5 */
 87 #ifndef PyVarObject_HEAD_INIT
 88 # define PyVarObject_HEAD_INIT(type, size) PyObject_HEAD_INIT(type) size,
 89 #endif
 90 
 91 #if PY_MAJOR_VERSION < 3
 92 PyMODINIT_FUNC initperf(void);
 93 #else
 94 PyMODINIT_FUNC PyInit_perf(void);
 95 #endif
 96 
 97 #define member_def(type, member, ptype, help) \
 98         { #member, ptype, \
 99           offsetof(struct pyrf_event, event) + offsetof(struct type, member), \
100           0, help }
101 
102 #define sample_member_def(name, member, ptype, help) \
103         { #name, ptype, \
104           offsetof(struct pyrf_event, sample) + offsetof(struct perf_sample, member), \
105           0, help }
106 
107 struct pyrf_event {
108         PyObject_HEAD
109         struct evsel *evsel;
110         struct perf_sample sample;
111         union perf_event   event;
112 };
113 
114 #define sample_members \
115         sample_member_def(sample_ip, ip, T_ULONGLONG, "event type"),                     \
116         sample_member_def(sample_pid, pid, T_INT, "event pid"),                  \
117         sample_member_def(sample_tid, tid, T_INT, "event tid"),                  \
118         sample_member_def(sample_time, time, T_ULONGLONG, "event timestamp"),            \
119         sample_member_def(sample_addr, addr, T_ULONGLONG, "event addr"),                 \
120         sample_member_def(sample_id, id, T_ULONGLONG, "event id"),                       \
121         sample_member_def(sample_stream_id, stream_id, T_ULONGLONG, "event stream id"), \
122         sample_member_def(sample_period, period, T_ULONGLONG, "event period"),           \
123         sample_member_def(sample_cpu, cpu, T_UINT, "event cpu"),
124 
125 static char pyrf_mmap_event__doc[] = PyDoc_STR("perf mmap event object.");
126 
127 static PyMemberDef pyrf_mmap_event__members[] = {
128         sample_members
129         member_def(perf_event_header, type, T_UINT, "event type"),
130         member_def(perf_event_header, misc, T_UINT, "event misc"),
131         member_def(perf_record_mmap, pid, T_UINT, "event pid"),
132         member_def(perf_record_mmap, tid, T_UINT, "event tid"),
133         member_def(perf_record_mmap, start, T_ULONGLONG, "start of the map"),
134         member_def(perf_record_mmap, len, T_ULONGLONG, "map length"),
135         member_def(perf_record_mmap, pgoff, T_ULONGLONG, "page offset"),
136         member_def(perf_record_mmap, filename, T_STRING_INPLACE, "backing store"),
137         { .name = NULL, },
138 };
139 
140 static PyObject *pyrf_mmap_event__repr(struct pyrf_event *pevent)
141 {
142         PyObject *ret;
143         char *s;
144 
145         if (asprintf(&s, "{ type: mmap, pid: %u, tid: %u, start: %#" PRI_lx64 ", "
146                          "length: %#" PRI_lx64 ", offset: %#" PRI_lx64 ", "
147                          "filename: %s }",
148                      pevent->event.mmap.pid, pevent->event.mmap.tid,
149                      pevent->event.mmap.start, pevent->event.mmap.len,
150                      pevent->event.mmap.pgoff, pevent->event.mmap.filename) < 0) {
151                 ret = PyErr_NoMemory();
152         } else {
153                 ret = _PyUnicode_FromString(s);
154                 free(s);
155         }
156         return ret;
157 }
158 
159 static PyTypeObject pyrf_mmap_event__type = {
160         PyVarObject_HEAD_INIT(NULL, 0)
161         .tp_name        = "perf.mmap_event",
162         .tp_basicsize   = sizeof(struct pyrf_event),
163         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
164         .tp_doc         = pyrf_mmap_event__doc,
165         .tp_members     = pyrf_mmap_event__members,
166         .tp_repr        = (reprfunc)pyrf_mmap_event__repr,
167 };
168 
169 static char pyrf_task_event__doc[] = PyDoc_STR("perf task (fork/exit) event object.");
170 
171 static PyMemberDef pyrf_task_event__members[] = {
172         sample_members
173         member_def(perf_event_header, type, T_UINT, "event type"),
174         member_def(perf_record_fork, pid, T_UINT, "event pid"),
175         member_def(perf_record_fork, ppid, T_UINT, "event ppid"),
176         member_def(perf_record_fork, tid, T_UINT, "event tid"),
177         member_def(perf_record_fork, ptid, T_UINT, "event ptid"),
178         member_def(perf_record_fork, time, T_ULONGLONG, "timestamp"),
179         { .name = NULL, },
180 };
181 
182 static PyObject *pyrf_task_event__repr(struct pyrf_event *pevent)
183 {
184         return _PyUnicode_FromFormat("{ type: %s, pid: %u, ppid: %u, tid: %u, "
185                                    "ptid: %u, time: %" PRI_lu64 "}",
186                                    pevent->event.header.type == PERF_RECORD_FORK ? "fork" : "exit",
187                                    pevent->event.fork.pid,
188                                    pevent->event.fork.ppid,
189                                    pevent->event.fork.tid,
190                                    pevent->event.fork.ptid,
191                                    pevent->event.fork.time);
192 }
193 
194 static PyTypeObject pyrf_task_event__type = {
195         PyVarObject_HEAD_INIT(NULL, 0)
196         .tp_name        = "perf.task_event",
197         .tp_basicsize   = sizeof(struct pyrf_event),
198         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
199         .tp_doc         = pyrf_task_event__doc,
200         .tp_members     = pyrf_task_event__members,
201         .tp_repr        = (reprfunc)pyrf_task_event__repr,
202 };
203 
204 static char pyrf_comm_event__doc[] = PyDoc_STR("perf comm event object.");
205 
206 static PyMemberDef pyrf_comm_event__members[] = {
207         sample_members
208         member_def(perf_event_header, type, T_UINT, "event type"),
209         member_def(perf_record_comm, pid, T_UINT, "event pid"),
210         member_def(perf_record_comm, tid, T_UINT, "event tid"),
211         member_def(perf_record_comm, comm, T_STRING_INPLACE, "process name"),
212         { .name = NULL, },
213 };
214 
215 static PyObject *pyrf_comm_event__repr(struct pyrf_event *pevent)
216 {
217         return _PyUnicode_FromFormat("{ type: comm, pid: %u, tid: %u, comm: %s }",
218                                    pevent->event.comm.pid,
219                                    pevent->event.comm.tid,
220                                    pevent->event.comm.comm);
221 }
222 
223 static PyTypeObject pyrf_comm_event__type = {
224         PyVarObject_HEAD_INIT(NULL, 0)
225         .tp_name        = "perf.comm_event",
226         .tp_basicsize   = sizeof(struct pyrf_event),
227         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
228         .tp_doc         = pyrf_comm_event__doc,
229         .tp_members     = pyrf_comm_event__members,
230         .tp_repr        = (reprfunc)pyrf_comm_event__repr,
231 };
232 
233 static char pyrf_throttle_event__doc[] = PyDoc_STR("perf throttle event object.");
234 
235 static PyMemberDef pyrf_throttle_event__members[] = {
236         sample_members
237         member_def(perf_event_header, type, T_UINT, "event type"),
238         member_def(perf_record_throttle, time, T_ULONGLONG, "timestamp"),
239         member_def(perf_record_throttle, id, T_ULONGLONG, "event id"),
240         member_def(perf_record_throttle, stream_id, T_ULONGLONG, "event stream id"),
241         { .name = NULL, },
242 };
243 
244 static PyObject *pyrf_throttle_event__repr(struct pyrf_event *pevent)
245 {
246         struct perf_record_throttle *te = (struct perf_record_throttle *)(&pevent->event.header + 1);
247 
248         return _PyUnicode_FromFormat("{ type: %sthrottle, time: %" PRI_lu64 ", id: %" PRI_lu64
249                                    ", stream_id: %" PRI_lu64 " }",
250                                    pevent->event.header.type == PERF_RECORD_THROTTLE ? "" : "un",
251                                    te->time, te->id, te->stream_id);
252 }
253 
254 static PyTypeObject pyrf_throttle_event__type = {
255         PyVarObject_HEAD_INIT(NULL, 0)
256         .tp_name        = "perf.throttle_event",
257         .tp_basicsize   = sizeof(struct pyrf_event),
258         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
259         .tp_doc         = pyrf_throttle_event__doc,
260         .tp_members     = pyrf_throttle_event__members,
261         .tp_repr        = (reprfunc)pyrf_throttle_event__repr,
262 };
263 
264 static char pyrf_lost_event__doc[] = PyDoc_STR("perf lost event object.");
265 
266 static PyMemberDef pyrf_lost_event__members[] = {
267         sample_members
268         member_def(perf_record_lost, id, T_ULONGLONG, "event id"),
269         member_def(perf_record_lost, lost, T_ULONGLONG, "number of lost events"),
270         { .name = NULL, },
271 };
272 
273 static PyObject *pyrf_lost_event__repr(struct pyrf_event *pevent)
274 {
275         PyObject *ret;
276         char *s;
277 
278         if (asprintf(&s, "{ type: lost, id: %#" PRI_lx64 ", "
279                          "lost: %#" PRI_lx64 " }",
280                      pevent->event.lost.id, pevent->event.lost.lost) < 0) {
281                 ret = PyErr_NoMemory();
282         } else {
283                 ret = _PyUnicode_FromString(s);
284                 free(s);
285         }
286         return ret;
287 }
288 
289 static PyTypeObject pyrf_lost_event__type = {
290         PyVarObject_HEAD_INIT(NULL, 0)
291         .tp_name        = "perf.lost_event",
292         .tp_basicsize   = sizeof(struct pyrf_event),
293         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
294         .tp_doc         = pyrf_lost_event__doc,
295         .tp_members     = pyrf_lost_event__members,
296         .tp_repr        = (reprfunc)pyrf_lost_event__repr,
297 };
298 
299 static char pyrf_read_event__doc[] = PyDoc_STR("perf read event object.");
300 
301 static PyMemberDef pyrf_read_event__members[] = {
302         sample_members
303         member_def(perf_record_read, pid, T_UINT, "event pid"),
304         member_def(perf_record_read, tid, T_UINT, "event tid"),
305         { .name = NULL, },
306 };
307 
308 static PyObject *pyrf_read_event__repr(struct pyrf_event *pevent)
309 {
310         return _PyUnicode_FromFormat("{ type: read, pid: %u, tid: %u }",
311                                    pevent->event.read.pid,
312                                    pevent->event.read.tid);
313         /*
314          * FIXME: return the array of read values,
315          * making this method useful ;-)
316          */
317 }
318 
319 static PyTypeObject pyrf_read_event__type = {
320         PyVarObject_HEAD_INIT(NULL, 0)
321         .tp_name        = "perf.read_event",
322         .tp_basicsize   = sizeof(struct pyrf_event),
323         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
324         .tp_doc         = pyrf_read_event__doc,
325         .tp_members     = pyrf_read_event__members,
326         .tp_repr        = (reprfunc)pyrf_read_event__repr,
327 };
328 
329 static char pyrf_sample_event__doc[] = PyDoc_STR("perf sample event object.");
330 
331 static PyMemberDef pyrf_sample_event__members[] = {
332         sample_members
333         member_def(perf_event_header, type, T_UINT, "event type"),
334         { .name = NULL, },
335 };
336 
337 static PyObject *pyrf_sample_event__repr(struct pyrf_event *pevent)
338 {
339         PyObject *ret;
340         char *s;
341 
342         if (asprintf(&s, "{ type: sample }") < 0) {
343                 ret = PyErr_NoMemory();
344         } else {
345                 ret = _PyUnicode_FromString(s);
346                 free(s);
347         }
348         return ret;
349 }
350 
351 static bool is_tracepoint(struct pyrf_event *pevent)
352 {
353         return pevent->evsel->core.attr.type == PERF_TYPE_TRACEPOINT;
354 }
355 
356 static PyObject*
357 tracepoint_field(struct pyrf_event *pe, struct tep_format_field *field)
358 {
359         struct tep_handle *pevent = field->event->tep;
360         void *data = pe->sample.raw_data;
361         PyObject *ret = NULL;
362         unsigned long long val;
363         unsigned int offset, len;
364 
365         if (field->flags & TEP_FIELD_IS_ARRAY) {
366                 offset = field->offset;
367                 len    = field->size;
368                 if (field->flags & TEP_FIELD_IS_DYNAMIC) {
369                         val     = tep_read_number(pevent, data + offset, len);
370                         offset  = val;
371                         len     = offset >> 16;
372                         offset &= 0xffff;
373                 }
374                 if (field->flags & TEP_FIELD_IS_STRING &&
375                     is_printable_array(data + offset, len)) {
376                         ret = _PyUnicode_FromString((char *)data + offset);
377                 } else {
378                         ret = PyByteArray_FromStringAndSize((const char *) data + offset, len);
379                         field->flags &= ~TEP_FIELD_IS_STRING;
380                 }
381         } else {
382                 val = tep_read_number(pevent, data + field->offset,
383                                       field->size);
384                 if (field->flags & TEP_FIELD_IS_POINTER)
385                         ret = PyLong_FromUnsignedLong((unsigned long) val);
386                 else if (field->flags & TEP_FIELD_IS_SIGNED)
387                         ret = PyLong_FromLong((long) val);
388                 else
389                         ret = PyLong_FromUnsignedLong((unsigned long) val);
390         }
391 
392         return ret;
393 }
394 
395 static PyObject*
396 get_tracepoint_field(struct pyrf_event *pevent, PyObject *attr_name)
397 {
398         const char *str = _PyUnicode_AsString(PyObject_Str(attr_name));
399         struct evsel *evsel = pevent->evsel;
400         struct tep_format_field *field;
401 
402         if (!evsel->tp_format) {
403                 struct tep_event *tp_format;
404 
405                 tp_format = trace_event__tp_format_id(evsel->core.attr.config);
406                 if (!tp_format)
407                         return NULL;
408 
409                 evsel->tp_format = tp_format;
410         }
411 
412         field = tep_find_any_field(evsel->tp_format, str);
413         if (!field)
414                 return NULL;
415 
416         return tracepoint_field(pevent, field);
417 }
418 
419 static PyObject*
420 pyrf_sample_event__getattro(struct pyrf_event *pevent, PyObject *attr_name)
421 {
422         PyObject *obj = NULL;
423 
424         if (is_tracepoint(pevent))
425                 obj = get_tracepoint_field(pevent, attr_name);
426 
427         return obj ?: PyObject_GenericGetAttr((PyObject *) pevent, attr_name);
428 }
429 
430 static PyTypeObject pyrf_sample_event__type = {
431         PyVarObject_HEAD_INIT(NULL, 0)
432         .tp_name        = "perf.sample_event",
433         .tp_basicsize   = sizeof(struct pyrf_event),
434         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
435         .tp_doc         = pyrf_sample_event__doc,
436         .tp_members     = pyrf_sample_event__members,
437         .tp_repr        = (reprfunc)pyrf_sample_event__repr,
438         .tp_getattro    = (getattrofunc) pyrf_sample_event__getattro,
439 };
440 
441 static char pyrf_context_switch_event__doc[] = PyDoc_STR("perf context_switch event object.");
442 
443 static PyMemberDef pyrf_context_switch_event__members[] = {
444         sample_members
445         member_def(perf_event_header, type, T_UINT, "event type"),
446         member_def(perf_record_switch, next_prev_pid, T_UINT, "next/prev pid"),
447         member_def(perf_record_switch, next_prev_tid, T_UINT, "next/prev tid"),
448         { .name = NULL, },
449 };
450 
451 static PyObject *pyrf_context_switch_event__repr(struct pyrf_event *pevent)
452 {
453         PyObject *ret;
454         char *s;
455 
456         if (asprintf(&s, "{ type: context_switch, next_prev_pid: %u, next_prev_tid: %u, switch_out: %u }",
457                      pevent->event.context_switch.next_prev_pid,
458                      pevent->event.context_switch.next_prev_tid,
459                      !!(pevent->event.header.misc & PERF_RECORD_MISC_SWITCH_OUT)) < 0) {
460                 ret = PyErr_NoMemory();
461         } else {
462                 ret = _PyUnicode_FromString(s);
463                 free(s);
464         }
465         return ret;
466 }
467 
468 static PyTypeObject pyrf_context_switch_event__type = {
469         PyVarObject_HEAD_INIT(NULL, 0)
470         .tp_name        = "perf.context_switch_event",
471         .tp_basicsize   = sizeof(struct pyrf_event),
472         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
473         .tp_doc         = pyrf_context_switch_event__doc,
474         .tp_members     = pyrf_context_switch_event__members,
475         .tp_repr        = (reprfunc)pyrf_context_switch_event__repr,
476 };
477 
478 static int pyrf_event__setup_types(void)
479 {
480         int err;
481         pyrf_mmap_event__type.tp_new =
482         pyrf_task_event__type.tp_new =
483         pyrf_comm_event__type.tp_new =
484         pyrf_lost_event__type.tp_new =
485         pyrf_read_event__type.tp_new =
486         pyrf_sample_event__type.tp_new =
487         pyrf_context_switch_event__type.tp_new =
488         pyrf_throttle_event__type.tp_new = PyType_GenericNew;
489         err = PyType_Ready(&pyrf_mmap_event__type);
490         if (err < 0)
491                 goto out;
492         err = PyType_Ready(&pyrf_lost_event__type);
493         if (err < 0)
494                 goto out;
495         err = PyType_Ready(&pyrf_task_event__type);
496         if (err < 0)
497                 goto out;
498         err = PyType_Ready(&pyrf_comm_event__type);
499         if (err < 0)
500                 goto out;
501         err = PyType_Ready(&pyrf_throttle_event__type);
502         if (err < 0)
503                 goto out;
504         err = PyType_Ready(&pyrf_read_event__type);
505         if (err < 0)
506                 goto out;
507         err = PyType_Ready(&pyrf_sample_event__type);
508         if (err < 0)
509                 goto out;
510         err = PyType_Ready(&pyrf_context_switch_event__type);
511         if (err < 0)
512                 goto out;
513 out:
514         return err;
515 }
516 
517 static PyTypeObject *pyrf_event__type[] = {
518         [PERF_RECORD_MMAP]       = &pyrf_mmap_event__type,
519         [PERF_RECORD_LOST]       = &pyrf_lost_event__type,
520         [PERF_RECORD_COMM]       = &pyrf_comm_event__type,
521         [PERF_RECORD_EXIT]       = &pyrf_task_event__type,
522         [PERF_RECORD_THROTTLE]   = &pyrf_throttle_event__type,
523         [PERF_RECORD_UNTHROTTLE] = &pyrf_throttle_event__type,
524         [PERF_RECORD_FORK]       = &pyrf_task_event__type,
525         [PERF_RECORD_READ]       = &pyrf_read_event__type,
526         [PERF_RECORD_SAMPLE]     = &pyrf_sample_event__type,
527         [PERF_RECORD_SWITCH]     = &pyrf_context_switch_event__type,
528         [PERF_RECORD_SWITCH_CPU_WIDE]  = &pyrf_context_switch_event__type,
529 };
530 
531 static PyObject *pyrf_event__new(union perf_event *event)
532 {
533         struct pyrf_event *pevent;
534         PyTypeObject *ptype;
535 
536         if ((event->header.type < PERF_RECORD_MMAP ||
537              event->header.type > PERF_RECORD_SAMPLE) &&
538             !(event->header.type == PERF_RECORD_SWITCH ||
539               event->header.type == PERF_RECORD_SWITCH_CPU_WIDE))
540                 return NULL;
541 
542         ptype = pyrf_event__type[event->header.type];
543         pevent = PyObject_New(struct pyrf_event, ptype);
544         if (pevent != NULL)
545                 memcpy(&pevent->event, event, event->header.size);
546         return (PyObject *)pevent;
547 }
548 
549 struct pyrf_cpu_map {
550         PyObject_HEAD
551 
552         struct perf_cpu_map *cpus;
553 };
554 
555 static int pyrf_cpu_map__init(struct pyrf_cpu_map *pcpus,
556                               PyObject *args, PyObject *kwargs)
557 {
558         static char *kwlist[] = { "cpustr", NULL };
559         char *cpustr = NULL;
560 
561         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|s",
562                                          kwlist, &cpustr))
563                 return -1;
564 
565         pcpus->cpus = perf_cpu_map__new(cpustr);
566         if (pcpus->cpus == NULL)
567                 return -1;
568         return 0;
569 }
570 
571 static void pyrf_cpu_map__delete(struct pyrf_cpu_map *pcpus)
572 {
573         perf_cpu_map__put(pcpus->cpus);
574         Py_TYPE(pcpus)->tp_free((PyObject*)pcpus);
575 }
576 
577 static Py_ssize_t pyrf_cpu_map__length(PyObject *obj)
578 {
579         struct pyrf_cpu_map *pcpus = (void *)obj;
580 
581         return pcpus->cpus->nr;
582 }
583 
584 static PyObject *pyrf_cpu_map__item(PyObject *obj, Py_ssize_t i)
585 {
586         struct pyrf_cpu_map *pcpus = (void *)obj;
587 
588         if (i >= pcpus->cpus->nr)
589                 return NULL;
590 
591         return Py_BuildValue("i", pcpus->cpus->map[i]);
592 }
593 
594 static PySequenceMethods pyrf_cpu_map__sequence_methods = {
595         .sq_length = pyrf_cpu_map__length,
596         .sq_item   = pyrf_cpu_map__item,
597 };
598 
599 static char pyrf_cpu_map__doc[] = PyDoc_STR("cpu map object.");
600 
601 static PyTypeObject pyrf_cpu_map__type = {
602         PyVarObject_HEAD_INIT(NULL, 0)
603         .tp_name        = "perf.cpu_map",
604         .tp_basicsize   = sizeof(struct pyrf_cpu_map),
605         .tp_dealloc     = (destructor)pyrf_cpu_map__delete,
606         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
607         .tp_doc         = pyrf_cpu_map__doc,
608         .tp_as_sequence = &pyrf_cpu_map__sequence_methods,
609         .tp_init        = (initproc)pyrf_cpu_map__init,
610 };
611 
612 static int pyrf_cpu_map__setup_types(void)
613 {
614         pyrf_cpu_map__type.tp_new = PyType_GenericNew;
615         return PyType_Ready(&pyrf_cpu_map__type);
616 }
617 
618 struct pyrf_thread_map {
619         PyObject_HEAD
620 
621         struct perf_thread_map *threads;
622 };
623 
624 static int pyrf_thread_map__init(struct pyrf_thread_map *pthreads,
625                                  PyObject *args, PyObject *kwargs)
626 {
627         static char *kwlist[] = { "pid", "tid", "uid", NULL };
628         int pid = -1, tid = -1, uid = UINT_MAX;
629 
630         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|iii",
631                                          kwlist, &pid, &tid, &uid))
632                 return -1;
633 
634         pthreads->threads = thread_map__new(pid, tid, uid);
635         if (pthreads->threads == NULL)
636                 return -1;
637         return 0;
638 }
639 
640 static void pyrf_thread_map__delete(struct pyrf_thread_map *pthreads)
641 {
642         perf_thread_map__put(pthreads->threads);
643         Py_TYPE(pthreads)->tp_free((PyObject*)pthreads);
644 }
645 
646 static Py_ssize_t pyrf_thread_map__length(PyObject *obj)
647 {
648         struct pyrf_thread_map *pthreads = (void *)obj;
649 
650         return pthreads->threads->nr;
651 }
652 
653 static PyObject *pyrf_thread_map__item(PyObject *obj, Py_ssize_t i)
654 {
655         struct pyrf_thread_map *pthreads = (void *)obj;
656 
657         if (i >= pthreads->threads->nr)
658                 return NULL;
659 
660         return Py_BuildValue("i", pthreads->threads->map[i]);
661 }
662 
663 static PySequenceMethods pyrf_thread_map__sequence_methods = {
664         .sq_length = pyrf_thread_map__length,
665         .sq_item   = pyrf_thread_map__item,
666 };
667 
668 static char pyrf_thread_map__doc[] = PyDoc_STR("thread map object.");
669 
670 static PyTypeObject pyrf_thread_map__type = {
671         PyVarObject_HEAD_INIT(NULL, 0)
672         .tp_name        = "perf.thread_map",
673         .tp_basicsize   = sizeof(struct pyrf_thread_map),
674         .tp_dealloc     = (destructor)pyrf_thread_map__delete,
675         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
676         .tp_doc         = pyrf_thread_map__doc,
677         .tp_as_sequence = &pyrf_thread_map__sequence_methods,
678         .tp_init        = (initproc)pyrf_thread_map__init,
679 };
680 
681 static int pyrf_thread_map__setup_types(void)
682 {
683         pyrf_thread_map__type.tp_new = PyType_GenericNew;
684         return PyType_Ready(&pyrf_thread_map__type);
685 }
686 
687 struct pyrf_evsel {
688         PyObject_HEAD
689 
690         struct evsel evsel;
691 };
692 
693 static int pyrf_evsel__init(struct pyrf_evsel *pevsel,
694                             PyObject *args, PyObject *kwargs)
695 {
696         struct perf_event_attr attr = {
697                 .type = PERF_TYPE_HARDWARE,
698                 .config = PERF_COUNT_HW_CPU_CYCLES,
699                 .sample_type = PERF_SAMPLE_PERIOD | PERF_SAMPLE_TID,
700         };
701         static char *kwlist[] = {
702                 "type",
703                 "config",
704                 "sample_freq",
705                 "sample_period",
706                 "sample_type",
707                 "read_format",
708                 "disabled",
709                 "inherit",
710                 "pinned",
711                 "exclusive",
712                 "exclude_user",
713                 "exclude_kernel",
714                 "exclude_hv",
715                 "exclude_idle",
716                 "mmap",
717                 "context_switch",
718                 "comm",
719                 "freq",
720                 "inherit_stat",
721                 "enable_on_exec",
722                 "task",
723                 "watermark",
724                 "precise_ip",
725                 "mmap_data",
726                 "sample_id_all",
727                 "wakeup_events",
728                 "bp_type",
729                 "bp_addr",
730                 "bp_len",
731                  NULL
732         };
733         u64 sample_period = 0;
734         u32 disabled = 0,
735             inherit = 0,
736             pinned = 0,
737             exclusive = 0,
738             exclude_user = 0,
739             exclude_kernel = 0,
740             exclude_hv = 0,
741             exclude_idle = 0,
742             mmap = 0,
743             context_switch = 0,
744             comm = 0,
745             freq = 1,
746             inherit_stat = 0,
747             enable_on_exec = 0,
748             task = 0,
749             watermark = 0,
750             precise_ip = 0,
751             mmap_data = 0,
752             sample_id_all = 1;
753         int idx = 0;
754 
755         if (!PyArg_ParseTupleAndKeywords(args, kwargs,
756                                          "|iKiKKiiiiiiiiiiiiiiiiiiiiiiKK", kwlist,
757                                          &attr.type, &attr.config, &attr.sample_freq,
758                                          &sample_period, &attr.sample_type,
759                                          &attr.read_format, &disabled, &inherit,
760                                          &pinned, &exclusive, &exclude_user,
761                                          &exclude_kernel, &exclude_hv, &exclude_idle,
762                                          &mmap, &context_switch, &comm, &freq, &inherit_stat,
763                                          &enable_on_exec, &task, &watermark,
764                                          &precise_ip, &mmap_data, &sample_id_all,
765                                          &attr.wakeup_events, &attr.bp_type,
766                                          &attr.bp_addr, &attr.bp_len, &idx))
767                 return -1;
768 
769         /* union... */
770         if (sample_period != 0) {
771                 if (attr.sample_freq != 0)
772                         return -1; /* FIXME: throw right exception */
773                 attr.sample_period = sample_period;
774         }
775 
776         /* Bitfields */
777         attr.disabled       = disabled;
778         attr.inherit        = inherit;
779         attr.pinned         = pinned;
780         attr.exclusive      = exclusive;
781         attr.exclude_user   = exclude_user;
782         attr.exclude_kernel = exclude_kernel;
783         attr.exclude_hv     = exclude_hv;
784         attr.exclude_idle   = exclude_idle;
785         attr.mmap           = mmap;
786         attr.context_switch = context_switch;
787         attr.comm           = comm;
788         attr.freq           = freq;
789         attr.inherit_stat   = inherit_stat;
790         attr.enable_on_exec = enable_on_exec;
791         attr.task           = task;
792         attr.watermark      = watermark;
793         attr.precise_ip     = precise_ip;
794         attr.mmap_data      = mmap_data;
795         attr.sample_id_all  = sample_id_all;
796         attr.size           = sizeof(attr);
797 
798         evsel__init(&pevsel->evsel, &attr, idx);
799         return 0;
800 }
801 
802 static void pyrf_evsel__delete(struct pyrf_evsel *pevsel)
803 {
804         perf_evsel__exit(&pevsel->evsel);
805         Py_TYPE(pevsel)->tp_free((PyObject*)pevsel);
806 }
807 
808 static PyObject *pyrf_evsel__open(struct pyrf_evsel *pevsel,
809                                   PyObject *args, PyObject *kwargs)
810 {
811         struct evsel *evsel = &pevsel->evsel;
812         struct perf_cpu_map *cpus = NULL;
813         struct perf_thread_map *threads = NULL;
814         PyObject *pcpus = NULL, *pthreads = NULL;
815         int group = 0, inherit = 0;
816         static char *kwlist[] = { "cpus", "threads", "group", "inherit", NULL };
817 
818         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|OOii", kwlist,
819                                          &pcpus, &pthreads, &group, &inherit))
820                 return NULL;
821 
822         if (pthreads != NULL)
823                 threads = ((struct pyrf_thread_map *)pthreads)->threads;
824 
825         if (pcpus != NULL)
826                 cpus = ((struct pyrf_cpu_map *)pcpus)->cpus;
827 
828         evsel->core.attr.inherit = inherit;
829         /*
830          * This will group just the fds for this single evsel, to group
831          * multiple events, use evlist.open().
832          */
833         if (evsel__open(evsel, cpus, threads) < 0) {
834                 PyErr_SetFromErrno(PyExc_OSError);
835                 return NULL;
836         }
837 
838         Py_INCREF(Py_None);
839         return Py_None;
840 }
841 
842 static PyMethodDef pyrf_evsel__methods[] = {
843         {
844                 .ml_name  = "open",
845                 .ml_meth  = (PyCFunction)pyrf_evsel__open,
846                 .ml_flags = METH_VARARGS | METH_KEYWORDS,
847                 .ml_doc   = PyDoc_STR("open the event selector file descriptor table.")
848         },
849         { .ml_name = NULL, }
850 };
851 
852 static char pyrf_evsel__doc[] = PyDoc_STR("perf event selector list object.");
853 
854 static PyTypeObject pyrf_evsel__type = {
855         PyVarObject_HEAD_INIT(NULL, 0)
856         .tp_name        = "perf.evsel",
857         .tp_basicsize   = sizeof(struct pyrf_evsel),
858         .tp_dealloc     = (destructor)pyrf_evsel__delete,
859         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
860         .tp_doc         = pyrf_evsel__doc,
861         .tp_methods     = pyrf_evsel__methods,
862         .tp_init        = (initproc)pyrf_evsel__init,
863 };
864 
865 static int pyrf_evsel__setup_types(void)
866 {
867         pyrf_evsel__type.tp_new = PyType_GenericNew;
868         return PyType_Ready(&pyrf_evsel__type);
869 }
870 
871 struct pyrf_evlist {
872         PyObject_HEAD
873 
874         struct evlist evlist;
875 };
876 
877 static int pyrf_evlist__init(struct pyrf_evlist *pevlist,
878                              PyObject *args, PyObject *kwargs __maybe_unused)
879 {
880         PyObject *pcpus = NULL, *pthreads = NULL;
881         struct perf_cpu_map *cpus;
882         struct perf_thread_map *threads;
883 
884         if (!PyArg_ParseTuple(args, "OO", &pcpus, &pthreads))
885                 return -1;
886 
887         threads = ((struct pyrf_thread_map *)pthreads)->threads;
888         cpus = ((struct pyrf_cpu_map *)pcpus)->cpus;
889         evlist__init(&pevlist->evlist, cpus, threads);
890         return 0;
891 }
892 
893 static void pyrf_evlist__delete(struct pyrf_evlist *pevlist)
894 {
895         evlist__exit(&pevlist->evlist);
896         Py_TYPE(pevlist)->tp_free((PyObject*)pevlist);
897 }
898 
899 static PyObject *pyrf_evlist__mmap(struct pyrf_evlist *pevlist,
900                                    PyObject *args, PyObject *kwargs)
901 {
902         struct evlist *evlist = &pevlist->evlist;
903         static char *kwlist[] = { "pages", "overwrite", NULL };
904         int pages = 128, overwrite = false;
905 
906         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|ii", kwlist,
907                                          &pages, &overwrite))
908                 return NULL;
909 
910         if (evlist__mmap(evlist, pages) < 0) {
911                 PyErr_SetFromErrno(PyExc_OSError);
912                 return NULL;
913         }
914 
915         Py_INCREF(Py_None);
916         return Py_None;
917 }
918 
919 static PyObject *pyrf_evlist__poll(struct pyrf_evlist *pevlist,
920                                    PyObject *args, PyObject *kwargs)
921 {
922         struct evlist *evlist = &pevlist->evlist;
923         static char *kwlist[] = { "timeout", NULL };
924         int timeout = -1, n;
925 
926         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|i", kwlist, &timeout))
927                 return NULL;
928 
929         n = evlist__poll(evlist, timeout);
930         if (n < 0) {
931                 PyErr_SetFromErrno(PyExc_OSError);
932                 return NULL;
933         }
934 
935         return Py_BuildValue("i", n);
936 }
937 
938 static PyObject *pyrf_evlist__get_pollfd(struct pyrf_evlist *pevlist,
939                                          PyObject *args __maybe_unused,
940                                          PyObject *kwargs __maybe_unused)
941 {
942         struct evlist *evlist = &pevlist->evlist;
943         PyObject *list = PyList_New(0);
944         int i;
945 
946         for (i = 0; i < evlist->core.pollfd.nr; ++i) {
947                 PyObject *file;
948 #if PY_MAJOR_VERSION < 3
949                 FILE *fp = fdopen(evlist->core.pollfd.entries[i].fd, "r");
950 
951                 if (fp == NULL)
952                         goto free_list;
953 
954                 file = PyFile_FromFile(fp, "perf", "r", NULL);
955 #else
956                 file = PyFile_FromFd(evlist->core.pollfd.entries[i].fd, "perf", "r", -1,
957                                      NULL, NULL, NULL, 0);
958 #endif
959                 if (file == NULL)
960                         goto free_list;
961 
962                 if (PyList_Append(list, file) != 0) {
963                         Py_DECREF(file);
964                         goto free_list;
965                 }
966 
967                 Py_DECREF(file);
968         }
969 
970         return list;
971 free_list:
972         return PyErr_NoMemory();
973 }
974 
975 
976 static PyObject *pyrf_evlist__add(struct pyrf_evlist *pevlist,
977                                   PyObject *args,
978                                   PyObject *kwargs __maybe_unused)
979 {
980         struct evlist *evlist = &pevlist->evlist;
981         PyObject *pevsel;
982         struct evsel *evsel;
983 
984         if (!PyArg_ParseTuple(args, "O", &pevsel))
985                 return NULL;
986 
987         Py_INCREF(pevsel);
988         evsel = &((struct pyrf_evsel *)pevsel)->evsel;
989         evsel->idx = evlist->core.nr_entries;
990         evlist__add(evlist, evsel);
991 
992         return Py_BuildValue("i", evlist->core.nr_entries);
993 }
994 
995 static struct mmap *get_md(struct evlist *evlist, int cpu)
996 {
997         int i;
998 
999         for (i = 0; i < evlist->core.nr_mmaps; i++) {
1000                 struct mmap *md = &evlist->mmap[i];
1001 
1002                 if (md->core.cpu == cpu)
1003                         return md;
1004         }
1005 
1006         return NULL;
1007 }
1008 
1009 static PyObject *pyrf_evlist__read_on_cpu(struct pyrf_evlist *pevlist,
1010                                           PyObject *args, PyObject *kwargs)
1011 {
1012         struct evlist *evlist = &pevlist->evlist;
1013         union perf_event *event;
1014         int sample_id_all = 1, cpu;
1015         static char *kwlist[] = { "cpu", "sample_id_all", NULL };
1016         struct mmap *md;
1017         int err;
1018 
1019         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "i|i", kwlist,
1020                                          &cpu, &sample_id_all))
1021                 return NULL;
1022 
1023         md = get_md(evlist, cpu);
1024         if (!md)
1025                 return NULL;
1026 
1027         if (perf_mmap__read_init(&md->core) < 0)
1028                 goto end;
1029 
1030         event = perf_mmap__read_event(&md->core);
1031         if (event != NULL) {
1032                 PyObject *pyevent = pyrf_event__new(event);
1033                 struct pyrf_event *pevent = (struct pyrf_event *)pyevent;
1034                 struct evsel *evsel;
1035 
1036                 if (pyevent == NULL)
1037                         return PyErr_NoMemory();
1038 
1039                 evsel = perf_evlist__event2evsel(evlist, event);
1040                 if (!evsel) {
1041                         Py_INCREF(Py_None);
1042                         return Py_None;
1043                 }
1044 
1045                 pevent->evsel = evsel;
1046 
1047                 err = perf_evsel__parse_sample(evsel, event, &pevent->sample);
1048 
1049                 /* Consume the even only after we parsed it out. */
1050                 perf_mmap__consume(&md->core);
1051 
1052                 if (err)
1053                         return PyErr_Format(PyExc_OSError,
1054                                             "perf: can't parse sample, err=%d", err);
1055                 return pyevent;
1056         }
1057 end:
1058         Py_INCREF(Py_None);
1059         return Py_None;
1060 }
1061 
1062 static PyObject *pyrf_evlist__open(struct pyrf_evlist *pevlist,
1063                                    PyObject *args, PyObject *kwargs)
1064 {
1065         struct evlist *evlist = &pevlist->evlist;
1066         int group = 0;
1067         static char *kwlist[] = { "group", NULL };
1068 
1069         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|OOii", kwlist, &group))
1070                 return NULL;
1071 
1072         if (group)
1073                 perf_evlist__set_leader(evlist);
1074 
1075         if (evlist__open(evlist) < 0) {
1076                 PyErr_SetFromErrno(PyExc_OSError);
1077                 return NULL;
1078         }
1079 
1080         Py_INCREF(Py_None);
1081         return Py_None;
1082 }
1083 
1084 static PyMethodDef pyrf_evlist__methods[] = {
1085         {
1086                 .ml_name  = "mmap",
1087                 .ml_meth  = (PyCFunction)pyrf_evlist__mmap,
1088                 .ml_flags = METH_VARARGS | METH_KEYWORDS,
1089                 .ml_doc   = PyDoc_STR("mmap the file descriptor table.")
1090         },
1091         {
1092                 .ml_name  = "open",
1093                 .ml_meth  = (PyCFunction)pyrf_evlist__open,
1094                 .ml_flags = METH_VARARGS | METH_KEYWORDS,
1095                 .ml_doc   = PyDoc_STR("open the file descriptors.")
1096         },
1097         {
1098                 .ml_name  = "poll",
1099                 .ml_meth  = (PyCFunction)pyrf_evlist__poll,
1100                 .ml_flags = METH_VARARGS | METH_KEYWORDS,
1101                 .ml_doc   = PyDoc_STR("poll the file descriptor table.")
1102         },
1103         {
1104                 .ml_name  = "get_pollfd",
1105                 .ml_meth  = (PyCFunction)pyrf_evlist__get_pollfd,
1106                 .ml_flags = METH_VARARGS | METH_KEYWORDS,
1107                 .ml_doc   = PyDoc_STR("get the poll file descriptor table.")
1108         },
1109         {
1110                 .ml_name  = "add",
1111                 .ml_meth  = (PyCFunction)pyrf_evlist__add,
1112                 .ml_flags = METH_VARARGS | METH_KEYWORDS,
1113                 .ml_doc   = PyDoc_STR("adds an event selector to the list.")
1114         },
1115         {
1116                 .ml_name  = "read_on_cpu",
1117                 .ml_meth  = (PyCFunction)pyrf_evlist__read_on_cpu,
1118                 .ml_flags = METH_VARARGS | METH_KEYWORDS,
1119                 .ml_doc   = PyDoc_STR("reads an event.")
1120         },
1121         { .ml_name = NULL, }
1122 };
1123 
1124 static Py_ssize_t pyrf_evlist__length(PyObject *obj)
1125 {
1126         struct pyrf_evlist *pevlist = (void *)obj;
1127 
1128         return pevlist->evlist.core.nr_entries;
1129 }
1130 
1131 static PyObject *pyrf_evlist__item(PyObject *obj, Py_ssize_t i)
1132 {
1133         struct pyrf_evlist *pevlist = (void *)obj;
1134         struct evsel *pos;
1135 
1136         if (i >= pevlist->evlist.core.nr_entries)
1137                 return NULL;
1138 
1139         evlist__for_each_entry(&pevlist->evlist, pos) {
1140                 if (i-- == 0)
1141                         break;
1142         }
1143 
1144         return Py_BuildValue("O", container_of(pos, struct pyrf_evsel, evsel));
1145 }
1146 
1147 static PySequenceMethods pyrf_evlist__sequence_methods = {
1148         .sq_length = pyrf_evlist__length,
1149         .sq_item   = pyrf_evlist__item,
1150 };
1151 
1152 static char pyrf_evlist__doc[] = PyDoc_STR("perf event selector list object.");
1153 
1154 static PyTypeObject pyrf_evlist__type = {
1155         PyVarObject_HEAD_INIT(NULL, 0)
1156         .tp_name        = "perf.evlist",
1157         .tp_basicsize   = sizeof(struct pyrf_evlist),
1158         .tp_dealloc     = (destructor)pyrf_evlist__delete,
1159         .tp_flags       = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
1160         .tp_as_sequence = &pyrf_evlist__sequence_methods,
1161         .tp_doc         = pyrf_evlist__doc,
1162         .tp_methods     = pyrf_evlist__methods,
1163         .tp_init        = (initproc)pyrf_evlist__init,
1164 };
1165 
1166 static int pyrf_evlist__setup_types(void)
1167 {
1168         pyrf_evlist__type.tp_new = PyType_GenericNew;
1169         return PyType_Ready(&pyrf_evlist__type);
1170 }
1171 
1172 #define PERF_CONST(name) { #name, PERF_##name }
1173 
1174 static struct {
1175         const char *name;
1176         int         value;
1177 } perf__constants[] = {
1178         PERF_CONST(TYPE_HARDWARE),
1179         PERF_CONST(TYPE_SOFTWARE),
1180         PERF_CONST(TYPE_TRACEPOINT),
1181         PERF_CONST(TYPE_HW_CACHE),
1182         PERF_CONST(TYPE_RAW),
1183         PERF_CONST(TYPE_BREAKPOINT),
1184 
1185         PERF_CONST(COUNT_HW_CPU_CYCLES),
1186         PERF_CONST(COUNT_HW_INSTRUCTIONS),
1187         PERF_CONST(COUNT_HW_CACHE_REFERENCES),
1188         PERF_CONST(COUNT_HW_CACHE_MISSES),
1189         PERF_CONST(COUNT_HW_BRANCH_INSTRUCTIONS),
1190         PERF_CONST(COUNT_HW_BRANCH_MISSES),
1191         PERF_CONST(COUNT_HW_BUS_CYCLES),
1192         PERF_CONST(COUNT_HW_CACHE_L1D),
1193         PERF_CONST(COUNT_HW_CACHE_L1I),
1194         PERF_CONST(COUNT_HW_CACHE_LL),
1195         PERF_CONST(COUNT_HW_CACHE_DTLB),
1196         PERF_CONST(COUNT_HW_CACHE_ITLB),
1197         PERF_CONST(COUNT_HW_CACHE_BPU),
1198         PERF_CONST(COUNT_HW_CACHE_OP_READ),
1199         PERF_CONST(COUNT_HW_CACHE_OP_WRITE),
1200         PERF_CONST(COUNT_HW_CACHE_OP_PREFETCH),
1201         PERF_CONST(COUNT_HW_CACHE_RESULT_ACCESS),
1202         PERF_CONST(COUNT_HW_CACHE_RESULT_MISS),
1203 
1204         PERF_CONST(COUNT_HW_STALLED_CYCLES_FRONTEND),
1205         PERF_CONST(COUNT_HW_STALLED_CYCLES_BACKEND),
1206 
1207         PERF_CONST(COUNT_SW_CPU_CLOCK),
1208         PERF_CONST(COUNT_SW_TASK_CLOCK),
1209         PERF_CONST(COUNT_SW_PAGE_FAULTS),
1210         PERF_CONST(COUNT_SW_CONTEXT_SWITCHES),
1211         PERF_CONST(COUNT_SW_CPU_MIGRATIONS),
1212         PERF_CONST(COUNT_SW_PAGE_FAULTS_MIN),
1213         PERF_CONST(COUNT_SW_PAGE_FAULTS_MAJ),
1214         PERF_CONST(COUNT_SW_ALIGNMENT_FAULTS),
1215         PERF_CONST(COUNT_SW_EMULATION_FAULTS),
1216         PERF_CONST(COUNT_SW_DUMMY),
1217 
1218         PERF_CONST(SAMPLE_IP),
1219         PERF_CONST(SAMPLE_TID),
1220         PERF_CONST(SAMPLE_TIME),
1221         PERF_CONST(SAMPLE_ADDR),
1222         PERF_CONST(SAMPLE_READ),
1223         PERF_CONST(SAMPLE_CALLCHAIN),
1224         PERF_CONST(SAMPLE_ID),
1225         PERF_CONST(SAMPLE_CPU),
1226         PERF_CONST(SAMPLE_PERIOD),
1227         PERF_CONST(SAMPLE_STREAM_ID),
1228         PERF_CONST(SAMPLE_RAW),
1229 
1230         PERF_CONST(FORMAT_TOTAL_TIME_ENABLED),
1231         PERF_CONST(FORMAT_TOTAL_TIME_RUNNING),
1232         PERF_CONST(FORMAT_ID),
1233         PERF_CONST(FORMAT_GROUP),
1234 
1235         PERF_CONST(RECORD_MMAP),
1236         PERF_CONST(RECORD_LOST),
1237         PERF_CONST(RECORD_COMM),
1238         PERF_CONST(RECORD_EXIT),
1239         PERF_CONST(RECORD_THROTTLE),
1240         PERF_CONST(RECORD_UNTHROTTLE),
1241         PERF_CONST(RECORD_FORK),
1242         PERF_CONST(RECORD_READ),
1243         PERF_CONST(RECORD_SAMPLE),
1244         PERF_CONST(RECORD_MMAP2),
1245         PERF_CONST(RECORD_AUX),
1246         PERF_CONST(RECORD_ITRACE_START),
1247         PERF_CONST(RECORD_LOST_SAMPLES),
1248         PERF_CONST(RECORD_SWITCH),
1249         PERF_CONST(RECORD_SWITCH_CPU_WIDE),
1250 
1251         PERF_CONST(RECORD_MISC_SWITCH_OUT),
1252         { .name = NULL, },
1253 };
1254 
1255 static PyObject *pyrf__tracepoint(struct pyrf_evsel *pevsel,
1256                                   PyObject *args, PyObject *kwargs)
1257 {
1258         struct tep_event *tp_format;
1259         static char *kwlist[] = { "sys", "name", NULL };
1260         char *sys  = NULL;
1261         char *name = NULL;
1262 
1263         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|ss", kwlist,
1264                                          &sys, &name))
1265                 return NULL;
1266 
1267         tp_format = trace_event__tp_format(sys, name);
1268         if (IS_ERR(tp_format))
1269                 return _PyLong_FromLong(-1);
1270 
1271         return _PyLong_FromLong(tp_format->id);
1272 }
1273 
1274 static PyMethodDef perf__methods[] = {
1275         {
1276                 .ml_name  = "tracepoint",
1277                 .ml_meth  = (PyCFunction) pyrf__tracepoint,
1278                 .ml_flags = METH_VARARGS | METH_KEYWORDS,
1279                 .ml_doc   = PyDoc_STR("Get tracepoint config.")
1280         },
1281         { .ml_name = NULL, }
1282 };
1283 
1284 #if PY_MAJOR_VERSION < 3
1285 PyMODINIT_FUNC initperf(void)
1286 #else
1287 PyMODINIT_FUNC PyInit_perf(void)
1288 #endif
1289 {
1290         PyObject *obj;
1291         int i;
1292         PyObject *dict;
1293 #if PY_MAJOR_VERSION < 3
1294         PyObject *module = Py_InitModule("perf", perf__methods);
1295 #else
1296         static struct PyModuleDef moduledef = {
1297                 PyModuleDef_HEAD_INIT,
1298                 "perf",                 /* m_name */
1299                 "",                     /* m_doc */
1300                 -1,                     /* m_size */
1301                 perf__methods,          /* m_methods */
1302                 NULL,                   /* m_reload */
1303                 NULL,                   /* m_traverse */
1304                 NULL,                   /* m_clear */
1305                 NULL,                   /* m_free */
1306         };
1307         PyObject *module = PyModule_Create(&moduledef);
1308 #endif
1309 
1310         if (module == NULL ||
1311             pyrf_event__setup_types() < 0 ||
1312             pyrf_evlist__setup_types() < 0 ||
1313             pyrf_evsel__setup_types() < 0 ||
1314             pyrf_thread_map__setup_types() < 0 ||
1315             pyrf_cpu_map__setup_types() < 0)
1316 #if PY_MAJOR_VERSION < 3
1317                 return;
1318 #else
1319                 return module;
1320 #endif
1321 
1322         /* The page_size is placed in util object. */
1323         page_size = sysconf(_SC_PAGE_SIZE);
1324 
1325         Py_INCREF(&pyrf_evlist__type);
1326         PyModule_AddObject(module, "evlist", (PyObject*)&pyrf_evlist__type);
1327 
1328         Py_INCREF(&pyrf_evsel__type);
1329         PyModule_AddObject(module, "evsel", (PyObject*)&pyrf_evsel__type);
1330 
1331         Py_INCREF(&pyrf_mmap_event__type);
1332         PyModule_AddObject(module, "mmap_event", (PyObject *)&pyrf_mmap_event__type);
1333 
1334         Py_INCREF(&pyrf_lost_event__type);
1335         PyModule_AddObject(module, "lost_event", (PyObject *)&pyrf_lost_event__type);
1336 
1337         Py_INCREF(&pyrf_comm_event__type);
1338         PyModule_AddObject(module, "comm_event", (PyObject *)&pyrf_comm_event__type);
1339 
1340         Py_INCREF(&pyrf_task_event__type);
1341         PyModule_AddObject(module, "task_event", (PyObject *)&pyrf_task_event__type);
1342 
1343         Py_INCREF(&pyrf_throttle_event__type);
1344         PyModule_AddObject(module, "throttle_event", (PyObject *)&pyrf_throttle_event__type);
1345 
1346         Py_INCREF(&pyrf_task_event__type);
1347         PyModule_AddObject(module, "task_event", (PyObject *)&pyrf_task_event__type);
1348 
1349         Py_INCREF(&pyrf_read_event__type);
1350         PyModule_AddObject(module, "read_event", (PyObject *)&pyrf_read_event__type);
1351 
1352         Py_INCREF(&pyrf_sample_event__type);
1353         PyModule_AddObject(module, "sample_event", (PyObject *)&pyrf_sample_event__type);
1354 
1355         Py_INCREF(&pyrf_context_switch_event__type);
1356         PyModule_AddObject(module, "switch_event", (PyObject *)&pyrf_context_switch_event__type);
1357 
1358         Py_INCREF(&pyrf_thread_map__type);
1359         PyModule_AddObject(module, "thread_map", (PyObject*)&pyrf_thread_map__type);
1360 
1361         Py_INCREF(&pyrf_cpu_map__type);
1362         PyModule_AddObject(module, "cpu_map", (PyObject*)&pyrf_cpu_map__type);
1363 
1364         dict = PyModule_GetDict(module);
1365         if (dict == NULL)
1366                 goto error;
1367 
1368         for (i = 0; perf__constants[i].name != NULL; i++) {
1369                 obj = _PyLong_FromLong(perf__constants[i].value);
1370                 if (obj == NULL)
1371                         goto error;
1372                 PyDict_SetItemString(dict, perf__constants[i].name, obj);
1373                 Py_DECREF(obj);
1374         }
1375 
1376 error:
1377         if (PyErr_Occurred())
1378                 PyErr_SetString(PyExc_ImportError, "perf: Init failed!");
1379 #if PY_MAJOR_VERSION >= 3
1380         return module;
1381 #endif
1382 }
1383 
1384 /*
1385  * Dummy, to avoid dragging all the test_attr infrastructure in the python
1386  * binding.
1387  */
1388 void test_attr__open(struct perf_event_attr *attr, pid_t pid, int cpu,
1389                      int fd, int group_fd, unsigned long flags)
1390 {
1391 }
1392 

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