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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 "evlist.h"
8#include "callchain.h"
9#include "evsel.h"
10#include "event.h"
11#include "cpumap.h"
12#include "print_binary.h"
13#include "thread_map.h"
14
15#if PY_MAJOR_VERSION < 3
16#define _PyUnicode_FromString(arg) \
17 PyString_FromString(arg)
18#define _PyUnicode_AsString(arg) \
19 PyString_AsString(arg)
20#define _PyUnicode_FromFormat(...) \
21 PyString_FromFormat(__VA_ARGS__)
22#define _PyLong_FromLong(arg) \
23 PyInt_FromLong(arg)
24
25#else
26
27#define _PyUnicode_FromString(arg) \
28 PyUnicode_FromString(arg)
29#define _PyUnicode_FromFormat(...) \
30 PyUnicode_FromFormat(__VA_ARGS__)
31#define _PyLong_FromLong(arg) \
32 PyLong_FromLong(arg)
33#endif
34
35#ifndef Py_TYPE
36#define Py_TYPE(ob) (((PyObject*)(ob))->ob_type)
37#endif
38
39/*
40 * Provide these two so that we don't have to link against callchain.c and
41 * start dragging hist.c, etc.
42 */
43struct callchain_param callchain_param;
44
45int parse_callchain_record(const char *arg __maybe_unused,
46 struct callchain_param *param __maybe_unused)
47{
48 return 0;
49}
50
51/*
52 * Support debug printing even though util/debug.c is not linked. That means
53 * implementing 'verbose' and 'eprintf'.
54 */
55int verbose;
56
57int eprintf(int level, int var, const char *fmt, ...)
58{
59 va_list args;
60 int ret = 0;
61
62 if (var >= level) {
63 va_start(args, fmt);
64 ret = vfprintf(stderr, fmt, args);
65 va_end(args);
66 }
67
68 return ret;
69}
70
71/* Define PyVarObject_HEAD_INIT for python 2.5 */
72#ifndef PyVarObject_HEAD_INIT
73# define PyVarObject_HEAD_INIT(type, size) PyObject_HEAD_INIT(type) size,
74#endif
75
76#if PY_MAJOR_VERSION < 3
77PyMODINIT_FUNC initperf(void);
78#else
79PyMODINIT_FUNC PyInit_perf(void);
80#endif
81
82#define member_def(type, member, ptype, help) \
83 { #member, ptype, \
84 offsetof(struct pyrf_event, event) + offsetof(struct type, member), \
85 0, help }
86
87#define sample_member_def(name, member, ptype, help) \
88 { #name, ptype, \
89 offsetof(struct pyrf_event, sample) + offsetof(struct perf_sample, member), \
90 0, help }
91
92struct pyrf_event {
93 PyObject_HEAD
94 struct perf_evsel *evsel;
95 struct perf_sample sample;
96 union perf_event event;
97};
98
99#define sample_members \
100 sample_member_def(sample_ip, ip, T_ULONGLONG, "event type"), \
101 sample_member_def(sample_pid, pid, T_INT, "event pid"), \
102 sample_member_def(sample_tid, tid, T_INT, "event tid"), \
103 sample_member_def(sample_time, time, T_ULONGLONG, "event timestamp"), \
104 sample_member_def(sample_addr, addr, T_ULONGLONG, "event addr"), \
105 sample_member_def(sample_id, id, T_ULONGLONG, "event id"), \
106 sample_member_def(sample_stream_id, stream_id, T_ULONGLONG, "event stream id"), \
107 sample_member_def(sample_period, period, T_ULONGLONG, "event period"), \
108 sample_member_def(sample_cpu, cpu, T_UINT, "event cpu"),
109
110static char pyrf_mmap_event__doc[] = PyDoc_STR("perf mmap event object.");
111
112static PyMemberDef pyrf_mmap_event__members[] = {
113 sample_members
114 member_def(perf_event_header, type, T_UINT, "event type"),
115 member_def(perf_event_header, misc, T_UINT, "event misc"),
116 member_def(mmap_event, pid, T_UINT, "event pid"),
117 member_def(mmap_event, tid, T_UINT, "event tid"),
118 member_def(mmap_event, start, T_ULONGLONG, "start of the map"),
119 member_def(mmap_event, len, T_ULONGLONG, "map length"),
120 member_def(mmap_event, pgoff, T_ULONGLONG, "page offset"),
121 member_def(mmap_event, filename, T_STRING_INPLACE, "backing store"),
122 { .name = NULL, },
123};
124
125static PyObject *pyrf_mmap_event__repr(struct pyrf_event *pevent)
126{
127 PyObject *ret;
128 char *s;
129
130 if (asprintf(&s, "{ type: mmap, pid: %u, tid: %u, start: %#" PRIx64 ", "
131 "length: %#" PRIx64 ", offset: %#" PRIx64 ", "
132 "filename: %s }",
133 pevent->event.mmap.pid, pevent->event.mmap.tid,
134 pevent->event.mmap.start, pevent->event.mmap.len,
135 pevent->event.mmap.pgoff, pevent->event.mmap.filename) < 0) {
136 ret = PyErr_NoMemory();
137 } else {
138 ret = _PyUnicode_FromString(s);
139 free(s);
140 }
141 return ret;
142}
143
144static PyTypeObject pyrf_mmap_event__type = {
145 PyVarObject_HEAD_INIT(NULL, 0)
146 .tp_name = "perf.mmap_event",
147 .tp_basicsize = sizeof(struct pyrf_event),
148 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
149 .tp_doc = pyrf_mmap_event__doc,
150 .tp_members = pyrf_mmap_event__members,
151 .tp_repr = (reprfunc)pyrf_mmap_event__repr,
152};
153
154static char pyrf_task_event__doc[] = PyDoc_STR("perf task (fork/exit) event object.");
155
156static PyMemberDef pyrf_task_event__members[] = {
157 sample_members
158 member_def(perf_event_header, type, T_UINT, "event type"),
159 member_def(fork_event, pid, T_UINT, "event pid"),
160 member_def(fork_event, ppid, T_UINT, "event ppid"),
161 member_def(fork_event, tid, T_UINT, "event tid"),
162 member_def(fork_event, ptid, T_UINT, "event ptid"),
163 member_def(fork_event, time, T_ULONGLONG, "timestamp"),
164 { .name = NULL, },
165};
166
167static PyObject *pyrf_task_event__repr(struct pyrf_event *pevent)
168{
169 return _PyUnicode_FromFormat("{ type: %s, pid: %u, ppid: %u, tid: %u, "
170 "ptid: %u, time: %" PRIu64 "}",
171 pevent->event.header.type == PERF_RECORD_FORK ? "fork" : "exit",
172 pevent->event.fork.pid,
173 pevent->event.fork.ppid,
174 pevent->event.fork.tid,
175 pevent->event.fork.ptid,
176 pevent->event.fork.time);
177}
178
179static PyTypeObject pyrf_task_event__type = {
180 PyVarObject_HEAD_INIT(NULL, 0)
181 .tp_name = "perf.task_event",
182 .tp_basicsize = sizeof(struct pyrf_event),
183 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
184 .tp_doc = pyrf_task_event__doc,
185 .tp_members = pyrf_task_event__members,
186 .tp_repr = (reprfunc)pyrf_task_event__repr,
187};
188
189static char pyrf_comm_event__doc[] = PyDoc_STR("perf comm event object.");
190
191static PyMemberDef pyrf_comm_event__members[] = {
192 sample_members
193 member_def(perf_event_header, type, T_UINT, "event type"),
194 member_def(comm_event, pid, T_UINT, "event pid"),
195 member_def(comm_event, tid, T_UINT, "event tid"),
196 member_def(comm_event, comm, T_STRING_INPLACE, "process name"),
197 { .name = NULL, },
198};
199
200static PyObject *pyrf_comm_event__repr(struct pyrf_event *pevent)
201{
202 return _PyUnicode_FromFormat("{ type: comm, pid: %u, tid: %u, comm: %s }",
203 pevent->event.comm.pid,
204 pevent->event.comm.tid,
205 pevent->event.comm.comm);
206}
207
208static PyTypeObject pyrf_comm_event__type = {
209 PyVarObject_HEAD_INIT(NULL, 0)
210 .tp_name = "perf.comm_event",
211 .tp_basicsize = sizeof(struct pyrf_event),
212 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
213 .tp_doc = pyrf_comm_event__doc,
214 .tp_members = pyrf_comm_event__members,
215 .tp_repr = (reprfunc)pyrf_comm_event__repr,
216};
217
218static char pyrf_throttle_event__doc[] = PyDoc_STR("perf throttle event object.");
219
220static PyMemberDef pyrf_throttle_event__members[] = {
221 sample_members
222 member_def(perf_event_header, type, T_UINT, "event type"),
223 member_def(throttle_event, time, T_ULONGLONG, "timestamp"),
224 member_def(throttle_event, id, T_ULONGLONG, "event id"),
225 member_def(throttle_event, stream_id, T_ULONGLONG, "event stream id"),
226 { .name = NULL, },
227};
228
229static PyObject *pyrf_throttle_event__repr(struct pyrf_event *pevent)
230{
231 struct throttle_event *te = (struct throttle_event *)(&pevent->event.header + 1);
232
233 return _PyUnicode_FromFormat("{ type: %sthrottle, time: %" PRIu64 ", id: %" PRIu64
234 ", stream_id: %" PRIu64 " }",
235 pevent->event.header.type == PERF_RECORD_THROTTLE ? "" : "un",
236 te->time, te->id, te->stream_id);
237}
238
239static PyTypeObject pyrf_throttle_event__type = {
240 PyVarObject_HEAD_INIT(NULL, 0)
241 .tp_name = "perf.throttle_event",
242 .tp_basicsize = sizeof(struct pyrf_event),
243 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
244 .tp_doc = pyrf_throttle_event__doc,
245 .tp_members = pyrf_throttle_event__members,
246 .tp_repr = (reprfunc)pyrf_throttle_event__repr,
247};
248
249static char pyrf_lost_event__doc[] = PyDoc_STR("perf lost event object.");
250
251static PyMemberDef pyrf_lost_event__members[] = {
252 sample_members
253 member_def(lost_event, id, T_ULONGLONG, "event id"),
254 member_def(lost_event, lost, T_ULONGLONG, "number of lost events"),
255 { .name = NULL, },
256};
257
258static PyObject *pyrf_lost_event__repr(struct pyrf_event *pevent)
259{
260 PyObject *ret;
261 char *s;
262
263 if (asprintf(&s, "{ type: lost, id: %#" PRIx64 ", "
264 "lost: %#" PRIx64 " }",
265 pevent->event.lost.id, pevent->event.lost.lost) < 0) {
266 ret = PyErr_NoMemory();
267 } else {
268 ret = _PyUnicode_FromString(s);
269 free(s);
270 }
271 return ret;
272}
273
274static PyTypeObject pyrf_lost_event__type = {
275 PyVarObject_HEAD_INIT(NULL, 0)
276 .tp_name = "perf.lost_event",
277 .tp_basicsize = sizeof(struct pyrf_event),
278 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
279 .tp_doc = pyrf_lost_event__doc,
280 .tp_members = pyrf_lost_event__members,
281 .tp_repr = (reprfunc)pyrf_lost_event__repr,
282};
283
284static char pyrf_read_event__doc[] = PyDoc_STR("perf read event object.");
285
286static PyMemberDef pyrf_read_event__members[] = {
287 sample_members
288 member_def(read_event, pid, T_UINT, "event pid"),
289 member_def(read_event, tid, T_UINT, "event tid"),
290 { .name = NULL, },
291};
292
293static PyObject *pyrf_read_event__repr(struct pyrf_event *pevent)
294{
295 return _PyUnicode_FromFormat("{ type: read, pid: %u, tid: %u }",
296 pevent->event.read.pid,
297 pevent->event.read.tid);
298 /*
299 * FIXME: return the array of read values,
300 * making this method useful ;-)
301 */
302}
303
304static PyTypeObject pyrf_read_event__type = {
305 PyVarObject_HEAD_INIT(NULL, 0)
306 .tp_name = "perf.read_event",
307 .tp_basicsize = sizeof(struct pyrf_event),
308 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
309 .tp_doc = pyrf_read_event__doc,
310 .tp_members = pyrf_read_event__members,
311 .tp_repr = (reprfunc)pyrf_read_event__repr,
312};
313
314static char pyrf_sample_event__doc[] = PyDoc_STR("perf sample event object.");
315
316static PyMemberDef pyrf_sample_event__members[] = {
317 sample_members
318 member_def(perf_event_header, type, T_UINT, "event type"),
319 { .name = NULL, },
320};
321
322static PyObject *pyrf_sample_event__repr(struct pyrf_event *pevent)
323{
324 PyObject *ret;
325 char *s;
326
327 if (asprintf(&s, "{ type: sample }") < 0) {
328 ret = PyErr_NoMemory();
329 } else {
330 ret = _PyUnicode_FromString(s);
331 free(s);
332 }
333 return ret;
334}
335
336static bool is_tracepoint(struct pyrf_event *pevent)
337{
338 return pevent->evsel->attr.type == PERF_TYPE_TRACEPOINT;
339}
340
341static PyObject*
342tracepoint_field(struct pyrf_event *pe, struct format_field *field)
343{
344 struct pevent *pevent = field->event->pevent;
345 void *data = pe->sample.raw_data;
346 PyObject *ret = NULL;
347 unsigned long long val;
348 unsigned int offset, len;
349
350 if (field->flags & FIELD_IS_ARRAY) {
351 offset = field->offset;
352 len = field->size;
353 if (field->flags & FIELD_IS_DYNAMIC) {
354 val = pevent_read_number(pevent, data + offset, len);
355 offset = val;
356 len = offset >> 16;
357 offset &= 0xffff;
358 }
359 if (field->flags & FIELD_IS_STRING &&
360 is_printable_array(data + offset, len)) {
361 ret = _PyUnicode_FromString((char *)data + offset);
362 } else {
363 ret = PyByteArray_FromStringAndSize((const char *) data + offset, len);
364 field->flags &= ~FIELD_IS_STRING;
365 }
366 } else {
367 val = pevent_read_number(pevent, data + field->offset,
368 field->size);
369 if (field->flags & FIELD_IS_POINTER)
370 ret = PyLong_FromUnsignedLong((unsigned long) val);
371 else if (field->flags & FIELD_IS_SIGNED)
372 ret = PyLong_FromLong((long) val);
373 else
374 ret = PyLong_FromUnsignedLong((unsigned long) val);
375 }
376
377 return ret;
378}
379
380static PyObject*
381get_tracepoint_field(struct pyrf_event *pevent, PyObject *attr_name)
382{
383 const char *str = _PyUnicode_AsString(PyObject_Str(attr_name));
384 struct perf_evsel *evsel = pevent->evsel;
385 struct format_field *field;
386
387 if (!evsel->tp_format) {
388 struct event_format *tp_format;
389
390 tp_format = trace_event__tp_format_id(evsel->attr.config);
391 if (!tp_format)
392 return NULL;
393
394 evsel->tp_format = tp_format;
395 }
396
397 field = pevent_find_any_field(evsel->tp_format, str);
398 if (!field)
399 return NULL;
400
401 return tracepoint_field(pevent, field);
402}
403
404static PyObject*
405pyrf_sample_event__getattro(struct pyrf_event *pevent, PyObject *attr_name)
406{
407 PyObject *obj = NULL;
408
409 if (is_tracepoint(pevent))
410 obj = get_tracepoint_field(pevent, attr_name);
411
412 return obj ?: PyObject_GenericGetAttr((PyObject *) pevent, attr_name);
413}
414
415static PyTypeObject pyrf_sample_event__type = {
416 PyVarObject_HEAD_INIT(NULL, 0)
417 .tp_name = "perf.sample_event",
418 .tp_basicsize = sizeof(struct pyrf_event),
419 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
420 .tp_doc = pyrf_sample_event__doc,
421 .tp_members = pyrf_sample_event__members,
422 .tp_repr = (reprfunc)pyrf_sample_event__repr,
423 .tp_getattro = (getattrofunc) pyrf_sample_event__getattro,
424};
425
426static char pyrf_context_switch_event__doc[] = PyDoc_STR("perf context_switch event object.");
427
428static PyMemberDef pyrf_context_switch_event__members[] = {
429 sample_members
430 member_def(perf_event_header, type, T_UINT, "event type"),
431 member_def(context_switch_event, next_prev_pid, T_UINT, "next/prev pid"),
432 member_def(context_switch_event, next_prev_tid, T_UINT, "next/prev tid"),
433 { .name = NULL, },
434};
435
436static PyObject *pyrf_context_switch_event__repr(struct pyrf_event *pevent)
437{
438 PyObject *ret;
439 char *s;
440
441 if (asprintf(&s, "{ type: context_switch, next_prev_pid: %u, next_prev_tid: %u, switch_out: %u }",
442 pevent->event.context_switch.next_prev_pid,
443 pevent->event.context_switch.next_prev_tid,
444 !!(pevent->event.header.misc & PERF_RECORD_MISC_SWITCH_OUT)) < 0) {
445 ret = PyErr_NoMemory();
446 } else {
447 ret = _PyUnicode_FromString(s);
448 free(s);
449 }
450 return ret;
451}
452
453static PyTypeObject pyrf_context_switch_event__type = {
454 PyVarObject_HEAD_INIT(NULL, 0)
455 .tp_name = "perf.context_switch_event",
456 .tp_basicsize = sizeof(struct pyrf_event),
457 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
458 .tp_doc = pyrf_context_switch_event__doc,
459 .tp_members = pyrf_context_switch_event__members,
460 .tp_repr = (reprfunc)pyrf_context_switch_event__repr,
461};
462
463static int pyrf_event__setup_types(void)
464{
465 int err;
466 pyrf_mmap_event__type.tp_new =
467 pyrf_task_event__type.tp_new =
468 pyrf_comm_event__type.tp_new =
469 pyrf_lost_event__type.tp_new =
470 pyrf_read_event__type.tp_new =
471 pyrf_sample_event__type.tp_new =
472 pyrf_context_switch_event__type.tp_new =
473 pyrf_throttle_event__type.tp_new = PyType_GenericNew;
474 err = PyType_Ready(&pyrf_mmap_event__type);
475 if (err < 0)
476 goto out;
477 err = PyType_Ready(&pyrf_lost_event__type);
478 if (err < 0)
479 goto out;
480 err = PyType_Ready(&pyrf_task_event__type);
481 if (err < 0)
482 goto out;
483 err = PyType_Ready(&pyrf_comm_event__type);
484 if (err < 0)
485 goto out;
486 err = PyType_Ready(&pyrf_throttle_event__type);
487 if (err < 0)
488 goto out;
489 err = PyType_Ready(&pyrf_read_event__type);
490 if (err < 0)
491 goto out;
492 err = PyType_Ready(&pyrf_sample_event__type);
493 if (err < 0)
494 goto out;
495 err = PyType_Ready(&pyrf_context_switch_event__type);
496 if (err < 0)
497 goto out;
498out:
499 return err;
500}
501
502static PyTypeObject *pyrf_event__type[] = {
503 [PERF_RECORD_MMAP] = &pyrf_mmap_event__type,
504 [PERF_RECORD_LOST] = &pyrf_lost_event__type,
505 [PERF_RECORD_COMM] = &pyrf_comm_event__type,
506 [PERF_RECORD_EXIT] = &pyrf_task_event__type,
507 [PERF_RECORD_THROTTLE] = &pyrf_throttle_event__type,
508 [PERF_RECORD_UNTHROTTLE] = &pyrf_throttle_event__type,
509 [PERF_RECORD_FORK] = &pyrf_task_event__type,
510 [PERF_RECORD_READ] = &pyrf_read_event__type,
511 [PERF_RECORD_SAMPLE] = &pyrf_sample_event__type,
512 [PERF_RECORD_SWITCH] = &pyrf_context_switch_event__type,
513 [PERF_RECORD_SWITCH_CPU_WIDE] = &pyrf_context_switch_event__type,
514};
515
516static PyObject *pyrf_event__new(union perf_event *event)
517{
518 struct pyrf_event *pevent;
519 PyTypeObject *ptype;
520
521 if ((event->header.type < PERF_RECORD_MMAP ||
522 event->header.type > PERF_RECORD_SAMPLE) &&
523 !(event->header.type == PERF_RECORD_SWITCH ||
524 event->header.type == PERF_RECORD_SWITCH_CPU_WIDE))
525 return NULL;
526
527 ptype = pyrf_event__type[event->header.type];
528 pevent = PyObject_New(struct pyrf_event, ptype);
529 if (pevent != NULL)
530 memcpy(&pevent->event, event, event->header.size);
531 return (PyObject *)pevent;
532}
533
534struct pyrf_cpu_map {
535 PyObject_HEAD
536
537 struct cpu_map *cpus;
538};
539
540static int pyrf_cpu_map__init(struct pyrf_cpu_map *pcpus,
541 PyObject *args, PyObject *kwargs)
542{
543 static char *kwlist[] = { "cpustr", NULL };
544 char *cpustr = NULL;
545
546 if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|s",
547 kwlist, &cpustr))
548 return -1;
549
550 pcpus->cpus = cpu_map__new(cpustr);
551 if (pcpus->cpus == NULL)
552 return -1;
553 return 0;
554}
555
556static void pyrf_cpu_map__delete(struct pyrf_cpu_map *pcpus)
557{
558 cpu_map__put(pcpus->cpus);
559 Py_TYPE(pcpus)->tp_free((PyObject*)pcpus);
560}
561
562static Py_ssize_t pyrf_cpu_map__length(PyObject *obj)
563{
564 struct pyrf_cpu_map *pcpus = (void *)obj;
565
566 return pcpus->cpus->nr;
567}
568
569static PyObject *pyrf_cpu_map__item(PyObject *obj, Py_ssize_t i)
570{
571 struct pyrf_cpu_map *pcpus = (void *)obj;
572
573 if (i >= pcpus->cpus->nr)
574 return NULL;
575
576 return Py_BuildValue("i", pcpus->cpus->map[i]);
577}
578
579static PySequenceMethods pyrf_cpu_map__sequence_methods = {
580 .sq_length = pyrf_cpu_map__length,
581 .sq_item = pyrf_cpu_map__item,
582};
583
584static char pyrf_cpu_map__doc[] = PyDoc_STR("cpu map object.");
585
586static PyTypeObject pyrf_cpu_map__type = {
587 PyVarObject_HEAD_INIT(NULL, 0)
588 .tp_name = "perf.cpu_map",
589 .tp_basicsize = sizeof(struct pyrf_cpu_map),
590 .tp_dealloc = (destructor)pyrf_cpu_map__delete,
591 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
592 .tp_doc = pyrf_cpu_map__doc,
593 .tp_as_sequence = &pyrf_cpu_map__sequence_methods,
594 .tp_init = (initproc)pyrf_cpu_map__init,
595};
596
597static int pyrf_cpu_map__setup_types(void)
598{
599 pyrf_cpu_map__type.tp_new = PyType_GenericNew;
600 return PyType_Ready(&pyrf_cpu_map__type);
601}
602
603struct pyrf_thread_map {
604 PyObject_HEAD
605
606 struct thread_map *threads;
607};
608
609static int pyrf_thread_map__init(struct pyrf_thread_map *pthreads,
610 PyObject *args, PyObject *kwargs)
611{
612 static char *kwlist[] = { "pid", "tid", "uid", NULL };
613 int pid = -1, tid = -1, uid = UINT_MAX;
614
615 if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|iii",
616 kwlist, &pid, &tid, &uid))
617 return -1;
618
619 pthreads->threads = thread_map__new(pid, tid, uid);
620 if (pthreads->threads == NULL)
621 return -1;
622 return 0;
623}
624
625static void pyrf_thread_map__delete(struct pyrf_thread_map *pthreads)
626{
627 thread_map__put(pthreads->threads);
628 Py_TYPE(pthreads)->tp_free((PyObject*)pthreads);
629}
630
631static Py_ssize_t pyrf_thread_map__length(PyObject *obj)
632{
633 struct pyrf_thread_map *pthreads = (void *)obj;
634
635 return pthreads->threads->nr;
636}
637
638static PyObject *pyrf_thread_map__item(PyObject *obj, Py_ssize_t i)
639{
640 struct pyrf_thread_map *pthreads = (void *)obj;
641
642 if (i >= pthreads->threads->nr)
643 return NULL;
644
645 return Py_BuildValue("i", pthreads->threads->map[i]);
646}
647
648static PySequenceMethods pyrf_thread_map__sequence_methods = {
649 .sq_length = pyrf_thread_map__length,
650 .sq_item = pyrf_thread_map__item,
651};
652
653static char pyrf_thread_map__doc[] = PyDoc_STR("thread map object.");
654
655static PyTypeObject pyrf_thread_map__type = {
656 PyVarObject_HEAD_INIT(NULL, 0)
657 .tp_name = "perf.thread_map",
658 .tp_basicsize = sizeof(struct pyrf_thread_map),
659 .tp_dealloc = (destructor)pyrf_thread_map__delete,
660 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
661 .tp_doc = pyrf_thread_map__doc,
662 .tp_as_sequence = &pyrf_thread_map__sequence_methods,
663 .tp_init = (initproc)pyrf_thread_map__init,
664};
665
666static int pyrf_thread_map__setup_types(void)
667{
668 pyrf_thread_map__type.tp_new = PyType_GenericNew;
669 return PyType_Ready(&pyrf_thread_map__type);
670}
671
672struct pyrf_evsel {
673 PyObject_HEAD
674
675 struct perf_evsel evsel;
676};
677
678static int pyrf_evsel__init(struct pyrf_evsel *pevsel,
679 PyObject *args, PyObject *kwargs)
680{
681 struct perf_event_attr attr = {
682 .type = PERF_TYPE_HARDWARE,
683 .config = PERF_COUNT_HW_CPU_CYCLES,
684 .sample_type = PERF_SAMPLE_PERIOD | PERF_SAMPLE_TID,
685 };
686 static char *kwlist[] = {
687 "type",
688 "config",
689 "sample_freq",
690 "sample_period",
691 "sample_type",
692 "read_format",
693 "disabled",
694 "inherit",
695 "pinned",
696 "exclusive",
697 "exclude_user",
698 "exclude_kernel",
699 "exclude_hv",
700 "exclude_idle",
701 "mmap",
702 "context_switch",
703 "comm",
704 "freq",
705 "inherit_stat",
706 "enable_on_exec",
707 "task",
708 "watermark",
709 "precise_ip",
710 "mmap_data",
711 "sample_id_all",
712 "wakeup_events",
713 "bp_type",
714 "bp_addr",
715 "bp_len",
716 NULL
717 };
718 u64 sample_period = 0;
719 u32 disabled = 0,
720 inherit = 0,
721 pinned = 0,
722 exclusive = 0,
723 exclude_user = 0,
724 exclude_kernel = 0,
725 exclude_hv = 0,
726 exclude_idle = 0,
727 mmap = 0,
728 context_switch = 0,
729 comm = 0,
730 freq = 1,
731 inherit_stat = 0,
732 enable_on_exec = 0,
733 task = 0,
734 watermark = 0,
735 precise_ip = 0,
736 mmap_data = 0,
737 sample_id_all = 1;
738 int idx = 0;
739
740 if (!PyArg_ParseTupleAndKeywords(args, kwargs,
741 "|iKiKKiiiiiiiiiiiiiiiiiiiiiiKK", kwlist,
742 &attr.type, &attr.config, &attr.sample_freq,
743 &sample_period, &attr.sample_type,
744 &attr.read_format, &disabled, &inherit,
745 &pinned, &exclusive, &exclude_user,
746 &exclude_kernel, &exclude_hv, &exclude_idle,
747 &mmap, &context_switch, &comm, &freq, &inherit_stat,
748 &enable_on_exec, &task, &watermark,
749 &precise_ip, &mmap_data, &sample_id_all,
750 &attr.wakeup_events, &attr.bp_type,
751 &attr.bp_addr, &attr.bp_len, &idx))
752 return -1;
753
754 /* union... */
755 if (sample_period != 0) {
756 if (attr.sample_freq != 0)
757 return -1; /* FIXME: throw right exception */
758 attr.sample_period = sample_period;
759 }
760
761 /* Bitfields */
762 attr.disabled = disabled;
763 attr.inherit = inherit;
764 attr.pinned = pinned;
765 attr.exclusive = exclusive;
766 attr.exclude_user = exclude_user;
767 attr.exclude_kernel = exclude_kernel;
768 attr.exclude_hv = exclude_hv;
769 attr.exclude_idle = exclude_idle;
770 attr.mmap = mmap;
771 attr.context_switch = context_switch;
772 attr.comm = comm;
773 attr.freq = freq;
774 attr.inherit_stat = inherit_stat;
775 attr.enable_on_exec = enable_on_exec;
776 attr.task = task;
777 attr.watermark = watermark;
778 attr.precise_ip = precise_ip;
779 attr.mmap_data = mmap_data;
780 attr.sample_id_all = sample_id_all;
781 attr.size = sizeof(attr);
782
783 perf_evsel__init(&pevsel->evsel, &attr, idx);
784 return 0;
785}
786
787static void pyrf_evsel__delete(struct pyrf_evsel *pevsel)
788{
789 perf_evsel__exit(&pevsel->evsel);
790 Py_TYPE(pevsel)->tp_free((PyObject*)pevsel);
791}
792
793static PyObject *pyrf_evsel__open(struct pyrf_evsel *pevsel,
794 PyObject *args, PyObject *kwargs)
795{
796 struct perf_evsel *evsel = &pevsel->evsel;
797 struct cpu_map *cpus = NULL;
798 struct thread_map *threads = NULL;
799 PyObject *pcpus = NULL, *pthreads = NULL;
800 int group = 0, inherit = 0;
801 static char *kwlist[] = { "cpus", "threads", "group", "inherit", NULL };
802
803 if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|OOii", kwlist,
804 &pcpus, &pthreads, &group, &inherit))
805 return NULL;
806
807 if (pthreads != NULL)
808 threads = ((struct pyrf_thread_map *)pthreads)->threads;
809
810 if (pcpus != NULL)
811 cpus = ((struct pyrf_cpu_map *)pcpus)->cpus;
812
813 evsel->attr.inherit = inherit;
814 /*
815 * This will group just the fds for this single evsel, to group
816 * multiple events, use evlist.open().
817 */
818 if (perf_evsel__open(evsel, cpus, threads) < 0) {
819 PyErr_SetFromErrno(PyExc_OSError);
820 return NULL;
821 }
822
823 Py_INCREF(Py_None);
824 return Py_None;
825}
826
827static PyMethodDef pyrf_evsel__methods[] = {
828 {
829 .ml_name = "open",
830 .ml_meth = (PyCFunction)pyrf_evsel__open,
831 .ml_flags = METH_VARARGS | METH_KEYWORDS,
832 .ml_doc = PyDoc_STR("open the event selector file descriptor table.")
833 },
834 { .ml_name = NULL, }
835};
836
837static char pyrf_evsel__doc[] = PyDoc_STR("perf event selector list object.");
838
839static PyTypeObject pyrf_evsel__type = {
840 PyVarObject_HEAD_INIT(NULL, 0)
841 .tp_name = "perf.evsel",
842 .tp_basicsize = sizeof(struct pyrf_evsel),
843 .tp_dealloc = (destructor)pyrf_evsel__delete,
844 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
845 .tp_doc = pyrf_evsel__doc,
846 .tp_methods = pyrf_evsel__methods,
847 .tp_init = (initproc)pyrf_evsel__init,
848};
849
850static int pyrf_evsel__setup_types(void)
851{
852 pyrf_evsel__type.tp_new = PyType_GenericNew;
853 return PyType_Ready(&pyrf_evsel__type);
854}
855
856struct pyrf_evlist {
857 PyObject_HEAD
858
859 struct perf_evlist evlist;
860};
861
862static int pyrf_evlist__init(struct pyrf_evlist *pevlist,
863 PyObject *args, PyObject *kwargs __maybe_unused)
864{
865 PyObject *pcpus = NULL, *pthreads = NULL;
866 struct cpu_map *cpus;
867 struct thread_map *threads;
868
869 if (!PyArg_ParseTuple(args, "OO", &pcpus, &pthreads))
870 return -1;
871
872 threads = ((struct pyrf_thread_map *)pthreads)->threads;
873 cpus = ((struct pyrf_cpu_map *)pcpus)->cpus;
874 perf_evlist__init(&pevlist->evlist, cpus, threads);
875 return 0;
876}
877
878static void pyrf_evlist__delete(struct pyrf_evlist *pevlist)
879{
880 perf_evlist__exit(&pevlist->evlist);
881 Py_TYPE(pevlist)->tp_free((PyObject*)pevlist);
882}
883
884static PyObject *pyrf_evlist__mmap(struct pyrf_evlist *pevlist,
885 PyObject *args, PyObject *kwargs)
886{
887 struct perf_evlist *evlist = &pevlist->evlist;
888 static char *kwlist[] = { "pages", "overwrite", NULL };
889 int pages = 128, overwrite = false;
890
891 if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|ii", kwlist,
892 &pages, &overwrite))
893 return NULL;
894
895 if (perf_evlist__mmap(evlist, pages) < 0) {
896 PyErr_SetFromErrno(PyExc_OSError);
897 return NULL;
898 }
899
900 Py_INCREF(Py_None);
901 return Py_None;
902}
903
904static PyObject *pyrf_evlist__poll(struct pyrf_evlist *pevlist,
905 PyObject *args, PyObject *kwargs)
906{
907 struct perf_evlist *evlist = &pevlist->evlist;
908 static char *kwlist[] = { "timeout", NULL };
909 int timeout = -1, n;
910
911 if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|i", kwlist, &timeout))
912 return NULL;
913
914 n = perf_evlist__poll(evlist, timeout);
915 if (n < 0) {
916 PyErr_SetFromErrno(PyExc_OSError);
917 return NULL;
918 }
919
920 return Py_BuildValue("i", n);
921}
922
923static PyObject *pyrf_evlist__get_pollfd(struct pyrf_evlist *pevlist,
924 PyObject *args __maybe_unused,
925 PyObject *kwargs __maybe_unused)
926{
927 struct perf_evlist *evlist = &pevlist->evlist;
928 PyObject *list = PyList_New(0);
929 int i;
930
931 for (i = 0; i < evlist->pollfd.nr; ++i) {
932 PyObject *file;
933#if PY_MAJOR_VERSION < 3
934 FILE *fp = fdopen(evlist->pollfd.entries[i].fd, "r");
935
936 if (fp == NULL)
937 goto free_list;
938
939 file = PyFile_FromFile(fp, "perf", "r", NULL);
940#else
941 file = PyFile_FromFd(evlist->pollfd.entries[i].fd, "perf", "r", -1, NULL, NULL, NULL, 1);
942#endif
943 if (file == NULL)
944 goto free_list;
945
946 if (PyList_Append(list, file) != 0) {
947 Py_DECREF(file);
948 goto free_list;
949 }
950
951 Py_DECREF(file);
952 }
953
954 return list;
955free_list:
956 return PyErr_NoMemory();
957}
958
959
960static PyObject *pyrf_evlist__add(struct pyrf_evlist *pevlist,
961 PyObject *args,
962 PyObject *kwargs __maybe_unused)
963{
964 struct perf_evlist *evlist = &pevlist->evlist;
965 PyObject *pevsel;
966 struct perf_evsel *evsel;
967
968 if (!PyArg_ParseTuple(args, "O", &pevsel))
969 return NULL;
970
971 Py_INCREF(pevsel);
972 evsel = &((struct pyrf_evsel *)pevsel)->evsel;
973 evsel->idx = evlist->nr_entries;
974 perf_evlist__add(evlist, evsel);
975
976 return Py_BuildValue("i", evlist->nr_entries);
977}
978
979static PyObject *pyrf_evlist__read_on_cpu(struct pyrf_evlist *pevlist,
980 PyObject *args, PyObject *kwargs)
981{
982 struct perf_evlist *evlist = &pevlist->evlist;
983 union perf_event *event;
984 int sample_id_all = 1, cpu;
985 static char *kwlist[] = { "cpu", "sample_id_all", NULL };
986 struct perf_mmap *md;
987 int err;
988
989 if (!PyArg_ParseTupleAndKeywords(args, kwargs, "i|i", kwlist,
990 &cpu, &sample_id_all))
991 return NULL;
992
993 md = &evlist->mmap[cpu];
994 if (perf_mmap__read_init(md) < 0)
995 goto end;
996
997 event = perf_mmap__read_event(md);
998 if (event != NULL) {
999 PyObject *pyevent = pyrf_event__new(event);
1000 struct pyrf_event *pevent = (struct pyrf_event *)pyevent;
1001 struct perf_evsel *evsel;
1002
1003 if (pyevent == NULL)
1004 return PyErr_NoMemory();
1005
1006 evsel = perf_evlist__event2evsel(evlist, event);
1007 if (!evsel) {
1008 Py_INCREF(Py_None);
1009 return Py_None;
1010 }
1011
1012 pevent->evsel = evsel;
1013
1014 err = perf_evsel__parse_sample(evsel, event, &pevent->sample);
1015
1016 /* Consume the even only after we parsed it out. */
1017 perf_mmap__consume(md);
1018
1019 if (err)
1020 return PyErr_Format(PyExc_OSError,
1021 "perf: can't parse sample, err=%d", err);
1022 return pyevent;
1023 }
1024end:
1025 Py_INCREF(Py_None);
1026 return Py_None;
1027}
1028
1029static PyObject *pyrf_evlist__open(struct pyrf_evlist *pevlist,
1030 PyObject *args, PyObject *kwargs)
1031{
1032 struct perf_evlist *evlist = &pevlist->evlist;
1033 int group = 0;
1034 static char *kwlist[] = { "group", NULL };
1035
1036 if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|OOii", kwlist, &group))
1037 return NULL;
1038
1039 if (group)
1040 perf_evlist__set_leader(evlist);
1041
1042 if (perf_evlist__open(evlist) < 0) {
1043 PyErr_SetFromErrno(PyExc_OSError);
1044 return NULL;
1045 }
1046
1047 Py_INCREF(Py_None);
1048 return Py_None;
1049}
1050
1051static PyMethodDef pyrf_evlist__methods[] = {
1052 {
1053 .ml_name = "mmap",
1054 .ml_meth = (PyCFunction)pyrf_evlist__mmap,
1055 .ml_flags = METH_VARARGS | METH_KEYWORDS,
1056 .ml_doc = PyDoc_STR("mmap the file descriptor table.")
1057 },
1058 {
1059 .ml_name = "open",
1060 .ml_meth = (PyCFunction)pyrf_evlist__open,
1061 .ml_flags = METH_VARARGS | METH_KEYWORDS,
1062 .ml_doc = PyDoc_STR("open the file descriptors.")
1063 },
1064 {
1065 .ml_name = "poll",
1066 .ml_meth = (PyCFunction)pyrf_evlist__poll,
1067 .ml_flags = METH_VARARGS | METH_KEYWORDS,
1068 .ml_doc = PyDoc_STR("poll the file descriptor table.")
1069 },
1070 {
1071 .ml_name = "get_pollfd",
1072 .ml_meth = (PyCFunction)pyrf_evlist__get_pollfd,
1073 .ml_flags = METH_VARARGS | METH_KEYWORDS,
1074 .ml_doc = PyDoc_STR("get the poll file descriptor table.")
1075 },
1076 {
1077 .ml_name = "add",
1078 .ml_meth = (PyCFunction)pyrf_evlist__add,
1079 .ml_flags = METH_VARARGS | METH_KEYWORDS,
1080 .ml_doc = PyDoc_STR("adds an event selector to the list.")
1081 },
1082 {
1083 .ml_name = "read_on_cpu",
1084 .ml_meth = (PyCFunction)pyrf_evlist__read_on_cpu,
1085 .ml_flags = METH_VARARGS | METH_KEYWORDS,
1086 .ml_doc = PyDoc_STR("reads an event.")
1087 },
1088 { .ml_name = NULL, }
1089};
1090
1091static Py_ssize_t pyrf_evlist__length(PyObject *obj)
1092{
1093 struct pyrf_evlist *pevlist = (void *)obj;
1094
1095 return pevlist->evlist.nr_entries;
1096}
1097
1098static PyObject *pyrf_evlist__item(PyObject *obj, Py_ssize_t i)
1099{
1100 struct pyrf_evlist *pevlist = (void *)obj;
1101 struct perf_evsel *pos;
1102
1103 if (i >= pevlist->evlist.nr_entries)
1104 return NULL;
1105
1106 evlist__for_each_entry(&pevlist->evlist, pos) {
1107 if (i-- == 0)
1108 break;
1109 }
1110
1111 return Py_BuildValue("O", container_of(pos, struct pyrf_evsel, evsel));
1112}
1113
1114static PySequenceMethods pyrf_evlist__sequence_methods = {
1115 .sq_length = pyrf_evlist__length,
1116 .sq_item = pyrf_evlist__item,
1117};
1118
1119static char pyrf_evlist__doc[] = PyDoc_STR("perf event selector list object.");
1120
1121static PyTypeObject pyrf_evlist__type = {
1122 PyVarObject_HEAD_INIT(NULL, 0)
1123 .tp_name = "perf.evlist",
1124 .tp_basicsize = sizeof(struct pyrf_evlist),
1125 .tp_dealloc = (destructor)pyrf_evlist__delete,
1126 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
1127 .tp_as_sequence = &pyrf_evlist__sequence_methods,
1128 .tp_doc = pyrf_evlist__doc,
1129 .tp_methods = pyrf_evlist__methods,
1130 .tp_init = (initproc)pyrf_evlist__init,
1131};
1132
1133static int pyrf_evlist__setup_types(void)
1134{
1135 pyrf_evlist__type.tp_new = PyType_GenericNew;
1136 return PyType_Ready(&pyrf_evlist__type);
1137}
1138
1139#define PERF_CONST(name) { #name, PERF_##name }
1140
1141static struct {
1142 const char *name;
1143 int value;
1144} perf__constants[] = {
1145 PERF_CONST(TYPE_HARDWARE),
1146 PERF_CONST(TYPE_SOFTWARE),
1147 PERF_CONST(TYPE_TRACEPOINT),
1148 PERF_CONST(TYPE_HW_CACHE),
1149 PERF_CONST(TYPE_RAW),
1150 PERF_CONST(TYPE_BREAKPOINT),
1151
1152 PERF_CONST(COUNT_HW_CPU_CYCLES),
1153 PERF_CONST(COUNT_HW_INSTRUCTIONS),
1154 PERF_CONST(COUNT_HW_CACHE_REFERENCES),
1155 PERF_CONST(COUNT_HW_CACHE_MISSES),
1156 PERF_CONST(COUNT_HW_BRANCH_INSTRUCTIONS),
1157 PERF_CONST(COUNT_HW_BRANCH_MISSES),
1158 PERF_CONST(COUNT_HW_BUS_CYCLES),
1159 PERF_CONST(COUNT_HW_CACHE_L1D),
1160 PERF_CONST(COUNT_HW_CACHE_L1I),
1161 PERF_CONST(COUNT_HW_CACHE_LL),
1162 PERF_CONST(COUNT_HW_CACHE_DTLB),
1163 PERF_CONST(COUNT_HW_CACHE_ITLB),
1164 PERF_CONST(COUNT_HW_CACHE_BPU),
1165 PERF_CONST(COUNT_HW_CACHE_OP_READ),
1166 PERF_CONST(COUNT_HW_CACHE_OP_WRITE),
1167 PERF_CONST(COUNT_HW_CACHE_OP_PREFETCH),
1168 PERF_CONST(COUNT_HW_CACHE_RESULT_ACCESS),
1169 PERF_CONST(COUNT_HW_CACHE_RESULT_MISS),
1170
1171 PERF_CONST(COUNT_HW_STALLED_CYCLES_FRONTEND),
1172 PERF_CONST(COUNT_HW_STALLED_CYCLES_BACKEND),
1173
1174 PERF_CONST(COUNT_SW_CPU_CLOCK),
1175 PERF_CONST(COUNT_SW_TASK_CLOCK),
1176 PERF_CONST(COUNT_SW_PAGE_FAULTS),
1177 PERF_CONST(COUNT_SW_CONTEXT_SWITCHES),
1178 PERF_CONST(COUNT_SW_CPU_MIGRATIONS),
1179 PERF_CONST(COUNT_SW_PAGE_FAULTS_MIN),
1180 PERF_CONST(COUNT_SW_PAGE_FAULTS_MAJ),
1181 PERF_CONST(COUNT_SW_ALIGNMENT_FAULTS),
1182 PERF_CONST(COUNT_SW_EMULATION_FAULTS),
1183 PERF_CONST(COUNT_SW_DUMMY),
1184
1185 PERF_CONST(SAMPLE_IP),
1186 PERF_CONST(SAMPLE_TID),
1187 PERF_CONST(SAMPLE_TIME),
1188 PERF_CONST(SAMPLE_ADDR),
1189 PERF_CONST(SAMPLE_READ),
1190 PERF_CONST(SAMPLE_CALLCHAIN),
1191 PERF_CONST(SAMPLE_ID),
1192 PERF_CONST(SAMPLE_CPU),
1193 PERF_CONST(SAMPLE_PERIOD),
1194 PERF_CONST(SAMPLE_STREAM_ID),
1195 PERF_CONST(SAMPLE_RAW),
1196
1197 PERF_CONST(FORMAT_TOTAL_TIME_ENABLED),
1198 PERF_CONST(FORMAT_TOTAL_TIME_RUNNING),
1199 PERF_CONST(FORMAT_ID),
1200 PERF_CONST(FORMAT_GROUP),
1201
1202 PERF_CONST(RECORD_MMAP),
1203 PERF_CONST(RECORD_LOST),
1204 PERF_CONST(RECORD_COMM),
1205 PERF_CONST(RECORD_EXIT),
1206 PERF_CONST(RECORD_THROTTLE),
1207 PERF_CONST(RECORD_UNTHROTTLE),
1208 PERF_CONST(RECORD_FORK),
1209 PERF_CONST(RECORD_READ),
1210 PERF_CONST(RECORD_SAMPLE),
1211 PERF_CONST(RECORD_MMAP2),
1212 PERF_CONST(RECORD_AUX),
1213 PERF_CONST(RECORD_ITRACE_START),
1214 PERF_CONST(RECORD_LOST_SAMPLES),
1215 PERF_CONST(RECORD_SWITCH),
1216 PERF_CONST(RECORD_SWITCH_CPU_WIDE),
1217
1218 PERF_CONST(RECORD_MISC_SWITCH_OUT),
1219 { .name = NULL, },
1220};
1221
1222static PyObject *pyrf__tracepoint(struct pyrf_evsel *pevsel,
1223 PyObject *args, PyObject *kwargs)
1224{
1225 struct event_format *tp_format;
1226 static char *kwlist[] = { "sys", "name", NULL };
1227 char *sys = NULL;
1228 char *name = NULL;
1229
1230 if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|ss", kwlist,
1231 &sys, &name))
1232 return NULL;
1233
1234 tp_format = trace_event__tp_format(sys, name);
1235 if (IS_ERR(tp_format))
1236 return _PyLong_FromLong(-1);
1237
1238 return _PyLong_FromLong(tp_format->id);
1239}
1240
1241static PyMethodDef perf__methods[] = {
1242 {
1243 .ml_name = "tracepoint",
1244 .ml_meth = (PyCFunction) pyrf__tracepoint,
1245 .ml_flags = METH_VARARGS | METH_KEYWORDS,
1246 .ml_doc = PyDoc_STR("Get tracepoint config.")
1247 },
1248 { .ml_name = NULL, }
1249};
1250
1251#if PY_MAJOR_VERSION < 3
1252PyMODINIT_FUNC initperf(void)
1253#else
1254PyMODINIT_FUNC PyInit_perf(void)
1255#endif
1256{
1257 PyObject *obj;
1258 int i;
1259 PyObject *dict;
1260#if PY_MAJOR_VERSION < 3
1261 PyObject *module = Py_InitModule("perf", perf__methods);
1262#else
1263 static struct PyModuleDef moduledef = {
1264 PyModuleDef_HEAD_INIT,
1265 "perf", /* m_name */
1266 "", /* m_doc */
1267 -1, /* m_size */
1268 perf__methods, /* m_methods */
1269 NULL, /* m_reload */
1270 NULL, /* m_traverse */
1271 NULL, /* m_clear */
1272 NULL, /* m_free */
1273 };
1274 PyObject *module = PyModule_Create(&moduledef);
1275#endif
1276
1277 if (module == NULL ||
1278 pyrf_event__setup_types() < 0 ||
1279 pyrf_evlist__setup_types() < 0 ||
1280 pyrf_evsel__setup_types() < 0 ||
1281 pyrf_thread_map__setup_types() < 0 ||
1282 pyrf_cpu_map__setup_types() < 0)
1283#if PY_MAJOR_VERSION < 3
1284 return;
1285#else
1286 return module;
1287#endif
1288
1289 /* The page_size is placed in util object. */
1290 page_size = sysconf(_SC_PAGE_SIZE);
1291
1292 Py_INCREF(&pyrf_evlist__type);
1293 PyModule_AddObject(module, "evlist", (PyObject*)&pyrf_evlist__type);
1294
1295 Py_INCREF(&pyrf_evsel__type);
1296 PyModule_AddObject(module, "evsel", (PyObject*)&pyrf_evsel__type);
1297
1298 Py_INCREF(&pyrf_mmap_event__type);
1299 PyModule_AddObject(module, "mmap_event", (PyObject *)&pyrf_mmap_event__type);
1300
1301 Py_INCREF(&pyrf_lost_event__type);
1302 PyModule_AddObject(module, "lost_event", (PyObject *)&pyrf_lost_event__type);
1303
1304 Py_INCREF(&pyrf_comm_event__type);
1305 PyModule_AddObject(module, "comm_event", (PyObject *)&pyrf_comm_event__type);
1306
1307 Py_INCREF(&pyrf_task_event__type);
1308 PyModule_AddObject(module, "task_event", (PyObject *)&pyrf_task_event__type);
1309
1310 Py_INCREF(&pyrf_throttle_event__type);
1311 PyModule_AddObject(module, "throttle_event", (PyObject *)&pyrf_throttle_event__type);
1312
1313 Py_INCREF(&pyrf_task_event__type);
1314 PyModule_AddObject(module, "task_event", (PyObject *)&pyrf_task_event__type);
1315
1316 Py_INCREF(&pyrf_read_event__type);
1317 PyModule_AddObject(module, "read_event", (PyObject *)&pyrf_read_event__type);
1318
1319 Py_INCREF(&pyrf_sample_event__type);
1320 PyModule_AddObject(module, "sample_event", (PyObject *)&pyrf_sample_event__type);
1321
1322 Py_INCREF(&pyrf_context_switch_event__type);
1323 PyModule_AddObject(module, "switch_event", (PyObject *)&pyrf_context_switch_event__type);
1324
1325 Py_INCREF(&pyrf_thread_map__type);
1326 PyModule_AddObject(module, "thread_map", (PyObject*)&pyrf_thread_map__type);
1327
1328 Py_INCREF(&pyrf_cpu_map__type);
1329 PyModule_AddObject(module, "cpu_map", (PyObject*)&pyrf_cpu_map__type);
1330
1331 dict = PyModule_GetDict(module);
1332 if (dict == NULL)
1333 goto error;
1334
1335 for (i = 0; perf__constants[i].name != NULL; i++) {
1336 obj = _PyLong_FromLong(perf__constants[i].value);
1337 if (obj == NULL)
1338 goto error;
1339 PyDict_SetItemString(dict, perf__constants[i].name, obj);
1340 Py_DECREF(obj);
1341 }
1342
1343error:
1344 if (PyErr_Occurred())
1345 PyErr_SetString(PyExc_ImportError, "perf: Init failed!");
1346#if PY_MAJOR_VERSION >= 3
1347 return module;
1348#endif
1349}
1350
1351/*
1352 * Dummy, to avoid dragging all the test_attr infrastructure in the python
1353 * binding.
1354 */
1355void test_attr__open(struct perf_event_attr *attr, pid_t pid, int cpu,
1356 int fd, int group_fd, unsigned long flags)
1357{
1358}
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/env.h"
23#include <internal/lib.h>
24#include "util.h"
25
26#if PY_MAJOR_VERSION < 3
27#define _PyUnicode_FromString(arg) \
28 PyString_FromString(arg)
29#define _PyUnicode_AsString(arg) \
30 PyString_AsString(arg)
31#define _PyUnicode_FromFormat(...) \
32 PyString_FromFormat(__VA_ARGS__)
33#define _PyLong_FromLong(arg) \
34 PyInt_FromLong(arg)
35
36#else
37
38#define _PyUnicode_FromString(arg) \
39 PyUnicode_FromString(arg)
40#define _PyUnicode_FromFormat(...) \
41 PyUnicode_FromFormat(__VA_ARGS__)
42#define _PyLong_FromLong(arg) \
43 PyLong_FromLong(arg)
44#endif
45
46#ifndef Py_TYPE
47#define Py_TYPE(ob) (((PyObject*)(ob))->ob_type)
48#endif
49
50/*
51 * Provide these two so that we don't have to link against callchain.c and
52 * start dragging hist.c, etc.
53 */
54struct callchain_param callchain_param;
55
56int parse_callchain_record(const char *arg __maybe_unused,
57 struct callchain_param *param __maybe_unused)
58{
59 return 0;
60}
61
62/*
63 * Add these not to drag util/env.c
64 */
65struct perf_env perf_env;
66
67const char *perf_env__cpuid(struct perf_env *env __maybe_unused)
68{
69 return NULL;
70}
71
72// This one is a bit easier, wouldn't drag too much, but leave it as a stub we need it here
73const char *perf_env__arch(struct perf_env *env __maybe_unused)
74{
75 return NULL;
76}
77
78/*
79 * Add this one here not to drag util/stat-shadow.c
80 */
81void perf_stat__collect_metric_expr(struct evlist *evsel_list)
82{
83}
84
85/*
86 * This one is needed not to drag the PMU bandwagon, jevents generated
87 * pmu_sys_event_tables, etc and evsel__find_pmu() is used so far just for
88 * doing per PMU perf_event_attr.exclude_guest handling, not really needed, so
89 * far, for the perf python binding known usecases, revisit if this become
90 * necessary.
91 */
92struct perf_pmu *evsel__find_pmu(struct evsel *evsel __maybe_unused)
93{
94 return NULL;
95}
96
97/*
98 * Add this one here not to drag util/metricgroup.c
99 */
100int metricgroup__copy_metric_events(struct evlist *evlist, struct cgroup *cgrp,
101 struct rblist *new_metric_events,
102 struct rblist *old_metric_events)
103{
104 return 0;
105}
106
107/*
108 * XXX: All these evsel destructors need some better mechanism, like a linked
109 * list of destructors registered when the relevant code indeed is used instead
110 * of having more and more calls in perf_evsel__delete(). -- acme
111 *
112 * For now, add some more:
113 *
114 * Not to drag the BPF bandwagon...
115 */
116void bpf_counter__destroy(struct evsel *evsel);
117int bpf_counter__install_pe(struct evsel *evsel, int cpu, int fd);
118int bpf_counter__disable(struct evsel *evsel);
119
120void bpf_counter__destroy(struct evsel *evsel __maybe_unused)
121{
122}
123
124int bpf_counter__install_pe(struct evsel *evsel __maybe_unused, int cpu __maybe_unused, int fd __maybe_unused)
125{
126 return 0;
127}
128
129int bpf_counter__disable(struct evsel *evsel __maybe_unused)
130{
131 return 0;
132}
133
134/*
135 * Support debug printing even though util/debug.c is not linked. That means
136 * implementing 'verbose' and 'eprintf'.
137 */
138int verbose;
139int debug_peo_args;
140
141int eprintf(int level, int var, const char *fmt, ...);
142
143int eprintf(int level, int var, const char *fmt, ...)
144{
145 va_list args;
146 int ret = 0;
147
148 if (var >= level) {
149 va_start(args, fmt);
150 ret = vfprintf(stderr, fmt, args);
151 va_end(args);
152 }
153
154 return ret;
155}
156
157/* Define PyVarObject_HEAD_INIT for python 2.5 */
158#ifndef PyVarObject_HEAD_INIT
159# define PyVarObject_HEAD_INIT(type, size) PyObject_HEAD_INIT(type) size,
160#endif
161
162#if PY_MAJOR_VERSION < 3
163PyMODINIT_FUNC initperf(void);
164#else
165PyMODINIT_FUNC PyInit_perf(void);
166#endif
167
168#define member_def(type, member, ptype, help) \
169 { #member, ptype, \
170 offsetof(struct pyrf_event, event) + offsetof(struct type, member), \
171 0, help }
172
173#define sample_member_def(name, member, ptype, help) \
174 { #name, ptype, \
175 offsetof(struct pyrf_event, sample) + offsetof(struct perf_sample, member), \
176 0, help }
177
178struct pyrf_event {
179 PyObject_HEAD
180 struct evsel *evsel;
181 struct perf_sample sample;
182 union perf_event event;
183};
184
185#define sample_members \
186 sample_member_def(sample_ip, ip, T_ULONGLONG, "event type"), \
187 sample_member_def(sample_pid, pid, T_INT, "event pid"), \
188 sample_member_def(sample_tid, tid, T_INT, "event tid"), \
189 sample_member_def(sample_time, time, T_ULONGLONG, "event timestamp"), \
190 sample_member_def(sample_addr, addr, T_ULONGLONG, "event addr"), \
191 sample_member_def(sample_id, id, T_ULONGLONG, "event id"), \
192 sample_member_def(sample_stream_id, stream_id, T_ULONGLONG, "event stream id"), \
193 sample_member_def(sample_period, period, T_ULONGLONG, "event period"), \
194 sample_member_def(sample_cpu, cpu, T_UINT, "event cpu"),
195
196static char pyrf_mmap_event__doc[] = PyDoc_STR("perf mmap event object.");
197
198static PyMemberDef pyrf_mmap_event__members[] = {
199 sample_members
200 member_def(perf_event_header, type, T_UINT, "event type"),
201 member_def(perf_event_header, misc, T_UINT, "event misc"),
202 member_def(perf_record_mmap, pid, T_UINT, "event pid"),
203 member_def(perf_record_mmap, tid, T_UINT, "event tid"),
204 member_def(perf_record_mmap, start, T_ULONGLONG, "start of the map"),
205 member_def(perf_record_mmap, len, T_ULONGLONG, "map length"),
206 member_def(perf_record_mmap, pgoff, T_ULONGLONG, "page offset"),
207 member_def(perf_record_mmap, filename, T_STRING_INPLACE, "backing store"),
208 { .name = NULL, },
209};
210
211static PyObject *pyrf_mmap_event__repr(struct pyrf_event *pevent)
212{
213 PyObject *ret;
214 char *s;
215
216 if (asprintf(&s, "{ type: mmap, pid: %u, tid: %u, start: %#" PRI_lx64 ", "
217 "length: %#" PRI_lx64 ", offset: %#" PRI_lx64 ", "
218 "filename: %s }",
219 pevent->event.mmap.pid, pevent->event.mmap.tid,
220 pevent->event.mmap.start, pevent->event.mmap.len,
221 pevent->event.mmap.pgoff, pevent->event.mmap.filename) < 0) {
222 ret = PyErr_NoMemory();
223 } else {
224 ret = _PyUnicode_FromString(s);
225 free(s);
226 }
227 return ret;
228}
229
230static PyTypeObject pyrf_mmap_event__type = {
231 PyVarObject_HEAD_INIT(NULL, 0)
232 .tp_name = "perf.mmap_event",
233 .tp_basicsize = sizeof(struct pyrf_event),
234 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
235 .tp_doc = pyrf_mmap_event__doc,
236 .tp_members = pyrf_mmap_event__members,
237 .tp_repr = (reprfunc)pyrf_mmap_event__repr,
238};
239
240static char pyrf_task_event__doc[] = PyDoc_STR("perf task (fork/exit) event object.");
241
242static PyMemberDef pyrf_task_event__members[] = {
243 sample_members
244 member_def(perf_event_header, type, T_UINT, "event type"),
245 member_def(perf_record_fork, pid, T_UINT, "event pid"),
246 member_def(perf_record_fork, ppid, T_UINT, "event ppid"),
247 member_def(perf_record_fork, tid, T_UINT, "event tid"),
248 member_def(perf_record_fork, ptid, T_UINT, "event ptid"),
249 member_def(perf_record_fork, time, T_ULONGLONG, "timestamp"),
250 { .name = NULL, },
251};
252
253static PyObject *pyrf_task_event__repr(struct pyrf_event *pevent)
254{
255 return _PyUnicode_FromFormat("{ type: %s, pid: %u, ppid: %u, tid: %u, "
256 "ptid: %u, time: %" PRI_lu64 "}",
257 pevent->event.header.type == PERF_RECORD_FORK ? "fork" : "exit",
258 pevent->event.fork.pid,
259 pevent->event.fork.ppid,
260 pevent->event.fork.tid,
261 pevent->event.fork.ptid,
262 pevent->event.fork.time);
263}
264
265static PyTypeObject pyrf_task_event__type = {
266 PyVarObject_HEAD_INIT(NULL, 0)
267 .tp_name = "perf.task_event",
268 .tp_basicsize = sizeof(struct pyrf_event),
269 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
270 .tp_doc = pyrf_task_event__doc,
271 .tp_members = pyrf_task_event__members,
272 .tp_repr = (reprfunc)pyrf_task_event__repr,
273};
274
275static char pyrf_comm_event__doc[] = PyDoc_STR("perf comm event object.");
276
277static PyMemberDef pyrf_comm_event__members[] = {
278 sample_members
279 member_def(perf_event_header, type, T_UINT, "event type"),
280 member_def(perf_record_comm, pid, T_UINT, "event pid"),
281 member_def(perf_record_comm, tid, T_UINT, "event tid"),
282 member_def(perf_record_comm, comm, T_STRING_INPLACE, "process name"),
283 { .name = NULL, },
284};
285
286static PyObject *pyrf_comm_event__repr(struct pyrf_event *pevent)
287{
288 return _PyUnicode_FromFormat("{ type: comm, pid: %u, tid: %u, comm: %s }",
289 pevent->event.comm.pid,
290 pevent->event.comm.tid,
291 pevent->event.comm.comm);
292}
293
294static PyTypeObject pyrf_comm_event__type = {
295 PyVarObject_HEAD_INIT(NULL, 0)
296 .tp_name = "perf.comm_event",
297 .tp_basicsize = sizeof(struct pyrf_event),
298 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
299 .tp_doc = pyrf_comm_event__doc,
300 .tp_members = pyrf_comm_event__members,
301 .tp_repr = (reprfunc)pyrf_comm_event__repr,
302};
303
304static char pyrf_throttle_event__doc[] = PyDoc_STR("perf throttle event object.");
305
306static PyMemberDef pyrf_throttle_event__members[] = {
307 sample_members
308 member_def(perf_event_header, type, T_UINT, "event type"),
309 member_def(perf_record_throttle, time, T_ULONGLONG, "timestamp"),
310 member_def(perf_record_throttle, id, T_ULONGLONG, "event id"),
311 member_def(perf_record_throttle, stream_id, T_ULONGLONG, "event stream id"),
312 { .name = NULL, },
313};
314
315static PyObject *pyrf_throttle_event__repr(struct pyrf_event *pevent)
316{
317 struct perf_record_throttle *te = (struct perf_record_throttle *)(&pevent->event.header + 1);
318
319 return _PyUnicode_FromFormat("{ type: %sthrottle, time: %" PRI_lu64 ", id: %" PRI_lu64
320 ", stream_id: %" PRI_lu64 " }",
321 pevent->event.header.type == PERF_RECORD_THROTTLE ? "" : "un",
322 te->time, te->id, te->stream_id);
323}
324
325static PyTypeObject pyrf_throttle_event__type = {
326 PyVarObject_HEAD_INIT(NULL, 0)
327 .tp_name = "perf.throttle_event",
328 .tp_basicsize = sizeof(struct pyrf_event),
329 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
330 .tp_doc = pyrf_throttle_event__doc,
331 .tp_members = pyrf_throttle_event__members,
332 .tp_repr = (reprfunc)pyrf_throttle_event__repr,
333};
334
335static char pyrf_lost_event__doc[] = PyDoc_STR("perf lost event object.");
336
337static PyMemberDef pyrf_lost_event__members[] = {
338 sample_members
339 member_def(perf_record_lost, id, T_ULONGLONG, "event id"),
340 member_def(perf_record_lost, lost, T_ULONGLONG, "number of lost events"),
341 { .name = NULL, },
342};
343
344static PyObject *pyrf_lost_event__repr(struct pyrf_event *pevent)
345{
346 PyObject *ret;
347 char *s;
348
349 if (asprintf(&s, "{ type: lost, id: %#" PRI_lx64 ", "
350 "lost: %#" PRI_lx64 " }",
351 pevent->event.lost.id, pevent->event.lost.lost) < 0) {
352 ret = PyErr_NoMemory();
353 } else {
354 ret = _PyUnicode_FromString(s);
355 free(s);
356 }
357 return ret;
358}
359
360static PyTypeObject pyrf_lost_event__type = {
361 PyVarObject_HEAD_INIT(NULL, 0)
362 .tp_name = "perf.lost_event",
363 .tp_basicsize = sizeof(struct pyrf_event),
364 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
365 .tp_doc = pyrf_lost_event__doc,
366 .tp_members = pyrf_lost_event__members,
367 .tp_repr = (reprfunc)pyrf_lost_event__repr,
368};
369
370static char pyrf_read_event__doc[] = PyDoc_STR("perf read event object.");
371
372static PyMemberDef pyrf_read_event__members[] = {
373 sample_members
374 member_def(perf_record_read, pid, T_UINT, "event pid"),
375 member_def(perf_record_read, tid, T_UINT, "event tid"),
376 { .name = NULL, },
377};
378
379static PyObject *pyrf_read_event__repr(struct pyrf_event *pevent)
380{
381 return _PyUnicode_FromFormat("{ type: read, pid: %u, tid: %u }",
382 pevent->event.read.pid,
383 pevent->event.read.tid);
384 /*
385 * FIXME: return the array of read values,
386 * making this method useful ;-)
387 */
388}
389
390static PyTypeObject pyrf_read_event__type = {
391 PyVarObject_HEAD_INIT(NULL, 0)
392 .tp_name = "perf.read_event",
393 .tp_basicsize = sizeof(struct pyrf_event),
394 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
395 .tp_doc = pyrf_read_event__doc,
396 .tp_members = pyrf_read_event__members,
397 .tp_repr = (reprfunc)pyrf_read_event__repr,
398};
399
400static char pyrf_sample_event__doc[] = PyDoc_STR("perf sample event object.");
401
402static PyMemberDef pyrf_sample_event__members[] = {
403 sample_members
404 member_def(perf_event_header, type, T_UINT, "event type"),
405 { .name = NULL, },
406};
407
408static PyObject *pyrf_sample_event__repr(struct pyrf_event *pevent)
409{
410 PyObject *ret;
411 char *s;
412
413 if (asprintf(&s, "{ type: sample }") < 0) {
414 ret = PyErr_NoMemory();
415 } else {
416 ret = _PyUnicode_FromString(s);
417 free(s);
418 }
419 return ret;
420}
421
422#ifdef HAVE_LIBTRACEEVENT
423static bool is_tracepoint(struct pyrf_event *pevent)
424{
425 return pevent->evsel->core.attr.type == PERF_TYPE_TRACEPOINT;
426}
427
428static PyObject*
429tracepoint_field(struct pyrf_event *pe, struct tep_format_field *field)
430{
431 struct tep_handle *pevent = field->event->tep;
432 void *data = pe->sample.raw_data;
433 PyObject *ret = NULL;
434 unsigned long long val;
435 unsigned int offset, len;
436
437 if (field->flags & TEP_FIELD_IS_ARRAY) {
438 offset = field->offset;
439 len = field->size;
440 if (field->flags & TEP_FIELD_IS_DYNAMIC) {
441 val = tep_read_number(pevent, data + offset, len);
442 offset = val;
443 len = offset >> 16;
444 offset &= 0xffff;
445#ifdef HAVE_LIBTRACEEVENT_TEP_FIELD_IS_RELATIVE
446 if (field->flags & TEP_FIELD_IS_RELATIVE)
447 offset += field->offset + field->size;
448#endif
449 }
450 if (field->flags & TEP_FIELD_IS_STRING &&
451 is_printable_array(data + offset, len)) {
452 ret = _PyUnicode_FromString((char *)data + offset);
453 } else {
454 ret = PyByteArray_FromStringAndSize((const char *) data + offset, len);
455 field->flags &= ~TEP_FIELD_IS_STRING;
456 }
457 } else {
458 val = tep_read_number(pevent, data + field->offset,
459 field->size);
460 if (field->flags & TEP_FIELD_IS_POINTER)
461 ret = PyLong_FromUnsignedLong((unsigned long) val);
462 else if (field->flags & TEP_FIELD_IS_SIGNED)
463 ret = PyLong_FromLong((long) val);
464 else
465 ret = PyLong_FromUnsignedLong((unsigned long) val);
466 }
467
468 return ret;
469}
470
471static PyObject*
472get_tracepoint_field(struct pyrf_event *pevent, PyObject *attr_name)
473{
474 const char *str = _PyUnicode_AsString(PyObject_Str(attr_name));
475 struct evsel *evsel = pevent->evsel;
476 struct tep_format_field *field;
477
478 if (!evsel->tp_format) {
479 struct tep_event *tp_format;
480
481 tp_format = trace_event__tp_format_id(evsel->core.attr.config);
482 if (IS_ERR_OR_NULL(tp_format))
483 return NULL;
484
485 evsel->tp_format = tp_format;
486 }
487
488 field = tep_find_any_field(evsel->tp_format, str);
489 if (!field)
490 return NULL;
491
492 return tracepoint_field(pevent, field);
493}
494#endif /* HAVE_LIBTRACEEVENT */
495
496static PyObject*
497pyrf_sample_event__getattro(struct pyrf_event *pevent, PyObject *attr_name)
498{
499 PyObject *obj = NULL;
500
501#ifdef HAVE_LIBTRACEEVENT
502 if (is_tracepoint(pevent))
503 obj = get_tracepoint_field(pevent, attr_name);
504#endif
505
506 return obj ?: PyObject_GenericGetAttr((PyObject *) pevent, attr_name);
507}
508
509static PyTypeObject pyrf_sample_event__type = {
510 PyVarObject_HEAD_INIT(NULL, 0)
511 .tp_name = "perf.sample_event",
512 .tp_basicsize = sizeof(struct pyrf_event),
513 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
514 .tp_doc = pyrf_sample_event__doc,
515 .tp_members = pyrf_sample_event__members,
516 .tp_repr = (reprfunc)pyrf_sample_event__repr,
517 .tp_getattro = (getattrofunc) pyrf_sample_event__getattro,
518};
519
520static char pyrf_context_switch_event__doc[] = PyDoc_STR("perf context_switch event object.");
521
522static PyMemberDef pyrf_context_switch_event__members[] = {
523 sample_members
524 member_def(perf_event_header, type, T_UINT, "event type"),
525 member_def(perf_record_switch, next_prev_pid, T_UINT, "next/prev pid"),
526 member_def(perf_record_switch, next_prev_tid, T_UINT, "next/prev tid"),
527 { .name = NULL, },
528};
529
530static PyObject *pyrf_context_switch_event__repr(struct pyrf_event *pevent)
531{
532 PyObject *ret;
533 char *s;
534
535 if (asprintf(&s, "{ type: context_switch, next_prev_pid: %u, next_prev_tid: %u, switch_out: %u }",
536 pevent->event.context_switch.next_prev_pid,
537 pevent->event.context_switch.next_prev_tid,
538 !!(pevent->event.header.misc & PERF_RECORD_MISC_SWITCH_OUT)) < 0) {
539 ret = PyErr_NoMemory();
540 } else {
541 ret = _PyUnicode_FromString(s);
542 free(s);
543 }
544 return ret;
545}
546
547static PyTypeObject pyrf_context_switch_event__type = {
548 PyVarObject_HEAD_INIT(NULL, 0)
549 .tp_name = "perf.context_switch_event",
550 .tp_basicsize = sizeof(struct pyrf_event),
551 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
552 .tp_doc = pyrf_context_switch_event__doc,
553 .tp_members = pyrf_context_switch_event__members,
554 .tp_repr = (reprfunc)pyrf_context_switch_event__repr,
555};
556
557static int pyrf_event__setup_types(void)
558{
559 int err;
560 pyrf_mmap_event__type.tp_new =
561 pyrf_task_event__type.tp_new =
562 pyrf_comm_event__type.tp_new =
563 pyrf_lost_event__type.tp_new =
564 pyrf_read_event__type.tp_new =
565 pyrf_sample_event__type.tp_new =
566 pyrf_context_switch_event__type.tp_new =
567 pyrf_throttle_event__type.tp_new = PyType_GenericNew;
568 err = PyType_Ready(&pyrf_mmap_event__type);
569 if (err < 0)
570 goto out;
571 err = PyType_Ready(&pyrf_lost_event__type);
572 if (err < 0)
573 goto out;
574 err = PyType_Ready(&pyrf_task_event__type);
575 if (err < 0)
576 goto out;
577 err = PyType_Ready(&pyrf_comm_event__type);
578 if (err < 0)
579 goto out;
580 err = PyType_Ready(&pyrf_throttle_event__type);
581 if (err < 0)
582 goto out;
583 err = PyType_Ready(&pyrf_read_event__type);
584 if (err < 0)
585 goto out;
586 err = PyType_Ready(&pyrf_sample_event__type);
587 if (err < 0)
588 goto out;
589 err = PyType_Ready(&pyrf_context_switch_event__type);
590 if (err < 0)
591 goto out;
592out:
593 return err;
594}
595
596static PyTypeObject *pyrf_event__type[] = {
597 [PERF_RECORD_MMAP] = &pyrf_mmap_event__type,
598 [PERF_RECORD_LOST] = &pyrf_lost_event__type,
599 [PERF_RECORD_COMM] = &pyrf_comm_event__type,
600 [PERF_RECORD_EXIT] = &pyrf_task_event__type,
601 [PERF_RECORD_THROTTLE] = &pyrf_throttle_event__type,
602 [PERF_RECORD_UNTHROTTLE] = &pyrf_throttle_event__type,
603 [PERF_RECORD_FORK] = &pyrf_task_event__type,
604 [PERF_RECORD_READ] = &pyrf_read_event__type,
605 [PERF_RECORD_SAMPLE] = &pyrf_sample_event__type,
606 [PERF_RECORD_SWITCH] = &pyrf_context_switch_event__type,
607 [PERF_RECORD_SWITCH_CPU_WIDE] = &pyrf_context_switch_event__type,
608};
609
610static PyObject *pyrf_event__new(union perf_event *event)
611{
612 struct pyrf_event *pevent;
613 PyTypeObject *ptype;
614
615 if ((event->header.type < PERF_RECORD_MMAP ||
616 event->header.type > PERF_RECORD_SAMPLE) &&
617 !(event->header.type == PERF_RECORD_SWITCH ||
618 event->header.type == PERF_RECORD_SWITCH_CPU_WIDE))
619 return NULL;
620
621 ptype = pyrf_event__type[event->header.type];
622 pevent = PyObject_New(struct pyrf_event, ptype);
623 if (pevent != NULL)
624 memcpy(&pevent->event, event, event->header.size);
625 return (PyObject *)pevent;
626}
627
628struct pyrf_cpu_map {
629 PyObject_HEAD
630
631 struct perf_cpu_map *cpus;
632};
633
634static int pyrf_cpu_map__init(struct pyrf_cpu_map *pcpus,
635 PyObject *args, PyObject *kwargs)
636{
637 static char *kwlist[] = { "cpustr", NULL };
638 char *cpustr = NULL;
639
640 if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|s",
641 kwlist, &cpustr))
642 return -1;
643
644 pcpus->cpus = perf_cpu_map__new(cpustr);
645 if (pcpus->cpus == NULL)
646 return -1;
647 return 0;
648}
649
650static void pyrf_cpu_map__delete(struct pyrf_cpu_map *pcpus)
651{
652 perf_cpu_map__put(pcpus->cpus);
653 Py_TYPE(pcpus)->tp_free((PyObject*)pcpus);
654}
655
656static Py_ssize_t pyrf_cpu_map__length(PyObject *obj)
657{
658 struct pyrf_cpu_map *pcpus = (void *)obj;
659
660 return perf_cpu_map__nr(pcpus->cpus);
661}
662
663static PyObject *pyrf_cpu_map__item(PyObject *obj, Py_ssize_t i)
664{
665 struct pyrf_cpu_map *pcpus = (void *)obj;
666
667 if (i >= perf_cpu_map__nr(pcpus->cpus))
668 return NULL;
669
670 return Py_BuildValue("i", perf_cpu_map__cpu(pcpus->cpus, i).cpu);
671}
672
673static PySequenceMethods pyrf_cpu_map__sequence_methods = {
674 .sq_length = pyrf_cpu_map__length,
675 .sq_item = pyrf_cpu_map__item,
676};
677
678static char pyrf_cpu_map__doc[] = PyDoc_STR("cpu map object.");
679
680static PyTypeObject pyrf_cpu_map__type = {
681 PyVarObject_HEAD_INIT(NULL, 0)
682 .tp_name = "perf.cpu_map",
683 .tp_basicsize = sizeof(struct pyrf_cpu_map),
684 .tp_dealloc = (destructor)pyrf_cpu_map__delete,
685 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
686 .tp_doc = pyrf_cpu_map__doc,
687 .tp_as_sequence = &pyrf_cpu_map__sequence_methods,
688 .tp_init = (initproc)pyrf_cpu_map__init,
689};
690
691static int pyrf_cpu_map__setup_types(void)
692{
693 pyrf_cpu_map__type.tp_new = PyType_GenericNew;
694 return PyType_Ready(&pyrf_cpu_map__type);
695}
696
697struct pyrf_thread_map {
698 PyObject_HEAD
699
700 struct perf_thread_map *threads;
701};
702
703static int pyrf_thread_map__init(struct pyrf_thread_map *pthreads,
704 PyObject *args, PyObject *kwargs)
705{
706 static char *kwlist[] = { "pid", "tid", "uid", NULL };
707 int pid = -1, tid = -1, uid = UINT_MAX;
708
709 if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|iii",
710 kwlist, &pid, &tid, &uid))
711 return -1;
712
713 pthreads->threads = thread_map__new(pid, tid, uid);
714 if (pthreads->threads == NULL)
715 return -1;
716 return 0;
717}
718
719static void pyrf_thread_map__delete(struct pyrf_thread_map *pthreads)
720{
721 perf_thread_map__put(pthreads->threads);
722 Py_TYPE(pthreads)->tp_free((PyObject*)pthreads);
723}
724
725static Py_ssize_t pyrf_thread_map__length(PyObject *obj)
726{
727 struct pyrf_thread_map *pthreads = (void *)obj;
728
729 return perf_thread_map__nr(pthreads->threads);
730}
731
732static PyObject *pyrf_thread_map__item(PyObject *obj, Py_ssize_t i)
733{
734 struct pyrf_thread_map *pthreads = (void *)obj;
735
736 if (i >= perf_thread_map__nr(pthreads->threads))
737 return NULL;
738
739 return Py_BuildValue("i", perf_thread_map__pid(pthreads->threads, i));
740}
741
742static PySequenceMethods pyrf_thread_map__sequence_methods = {
743 .sq_length = pyrf_thread_map__length,
744 .sq_item = pyrf_thread_map__item,
745};
746
747static char pyrf_thread_map__doc[] = PyDoc_STR("thread map object.");
748
749static PyTypeObject pyrf_thread_map__type = {
750 PyVarObject_HEAD_INIT(NULL, 0)
751 .tp_name = "perf.thread_map",
752 .tp_basicsize = sizeof(struct pyrf_thread_map),
753 .tp_dealloc = (destructor)pyrf_thread_map__delete,
754 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
755 .tp_doc = pyrf_thread_map__doc,
756 .tp_as_sequence = &pyrf_thread_map__sequence_methods,
757 .tp_init = (initproc)pyrf_thread_map__init,
758};
759
760static int pyrf_thread_map__setup_types(void)
761{
762 pyrf_thread_map__type.tp_new = PyType_GenericNew;
763 return PyType_Ready(&pyrf_thread_map__type);
764}
765
766struct pyrf_evsel {
767 PyObject_HEAD
768
769 struct evsel evsel;
770};
771
772static int pyrf_evsel__init(struct pyrf_evsel *pevsel,
773 PyObject *args, PyObject *kwargs)
774{
775 struct perf_event_attr attr = {
776 .type = PERF_TYPE_HARDWARE,
777 .config = PERF_COUNT_HW_CPU_CYCLES,
778 .sample_type = PERF_SAMPLE_PERIOD | PERF_SAMPLE_TID,
779 };
780 static char *kwlist[] = {
781 "type",
782 "config",
783 "sample_freq",
784 "sample_period",
785 "sample_type",
786 "read_format",
787 "disabled",
788 "inherit",
789 "pinned",
790 "exclusive",
791 "exclude_user",
792 "exclude_kernel",
793 "exclude_hv",
794 "exclude_idle",
795 "mmap",
796 "context_switch",
797 "comm",
798 "freq",
799 "inherit_stat",
800 "enable_on_exec",
801 "task",
802 "watermark",
803 "precise_ip",
804 "mmap_data",
805 "sample_id_all",
806 "wakeup_events",
807 "bp_type",
808 "bp_addr",
809 "bp_len",
810 NULL
811 };
812 u64 sample_period = 0;
813 u32 disabled = 0,
814 inherit = 0,
815 pinned = 0,
816 exclusive = 0,
817 exclude_user = 0,
818 exclude_kernel = 0,
819 exclude_hv = 0,
820 exclude_idle = 0,
821 mmap = 0,
822 context_switch = 0,
823 comm = 0,
824 freq = 1,
825 inherit_stat = 0,
826 enable_on_exec = 0,
827 task = 0,
828 watermark = 0,
829 precise_ip = 0,
830 mmap_data = 0,
831 sample_id_all = 1;
832 int idx = 0;
833
834 if (!PyArg_ParseTupleAndKeywords(args, kwargs,
835 "|iKiKKiiiiiiiiiiiiiiiiiiiiiiKK", kwlist,
836 &attr.type, &attr.config, &attr.sample_freq,
837 &sample_period, &attr.sample_type,
838 &attr.read_format, &disabled, &inherit,
839 &pinned, &exclusive, &exclude_user,
840 &exclude_kernel, &exclude_hv, &exclude_idle,
841 &mmap, &context_switch, &comm, &freq, &inherit_stat,
842 &enable_on_exec, &task, &watermark,
843 &precise_ip, &mmap_data, &sample_id_all,
844 &attr.wakeup_events, &attr.bp_type,
845 &attr.bp_addr, &attr.bp_len, &idx))
846 return -1;
847
848 /* union... */
849 if (sample_period != 0) {
850 if (attr.sample_freq != 0)
851 return -1; /* FIXME: throw right exception */
852 attr.sample_period = sample_period;
853 }
854
855 /* Bitfields */
856 attr.disabled = disabled;
857 attr.inherit = inherit;
858 attr.pinned = pinned;
859 attr.exclusive = exclusive;
860 attr.exclude_user = exclude_user;
861 attr.exclude_kernel = exclude_kernel;
862 attr.exclude_hv = exclude_hv;
863 attr.exclude_idle = exclude_idle;
864 attr.mmap = mmap;
865 attr.context_switch = context_switch;
866 attr.comm = comm;
867 attr.freq = freq;
868 attr.inherit_stat = inherit_stat;
869 attr.enable_on_exec = enable_on_exec;
870 attr.task = task;
871 attr.watermark = watermark;
872 attr.precise_ip = precise_ip;
873 attr.mmap_data = mmap_data;
874 attr.sample_id_all = sample_id_all;
875 attr.size = sizeof(attr);
876
877 evsel__init(&pevsel->evsel, &attr, idx);
878 return 0;
879}
880
881static void pyrf_evsel__delete(struct pyrf_evsel *pevsel)
882{
883 evsel__exit(&pevsel->evsel);
884 Py_TYPE(pevsel)->tp_free((PyObject*)pevsel);
885}
886
887static PyObject *pyrf_evsel__open(struct pyrf_evsel *pevsel,
888 PyObject *args, PyObject *kwargs)
889{
890 struct evsel *evsel = &pevsel->evsel;
891 struct perf_cpu_map *cpus = NULL;
892 struct perf_thread_map *threads = NULL;
893 PyObject *pcpus = NULL, *pthreads = NULL;
894 int group = 0, inherit = 0;
895 static char *kwlist[] = { "cpus", "threads", "group", "inherit", NULL };
896
897 if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|OOii", kwlist,
898 &pcpus, &pthreads, &group, &inherit))
899 return NULL;
900
901 if (pthreads != NULL)
902 threads = ((struct pyrf_thread_map *)pthreads)->threads;
903
904 if (pcpus != NULL)
905 cpus = ((struct pyrf_cpu_map *)pcpus)->cpus;
906
907 evsel->core.attr.inherit = inherit;
908 /*
909 * This will group just the fds for this single evsel, to group
910 * multiple events, use evlist.open().
911 */
912 if (evsel__open(evsel, cpus, threads) < 0) {
913 PyErr_SetFromErrno(PyExc_OSError);
914 return NULL;
915 }
916
917 Py_INCREF(Py_None);
918 return Py_None;
919}
920
921static PyMethodDef pyrf_evsel__methods[] = {
922 {
923 .ml_name = "open",
924 .ml_meth = (PyCFunction)pyrf_evsel__open,
925 .ml_flags = METH_VARARGS | METH_KEYWORDS,
926 .ml_doc = PyDoc_STR("open the event selector file descriptor table.")
927 },
928 { .ml_name = NULL, }
929};
930
931static char pyrf_evsel__doc[] = PyDoc_STR("perf event selector list object.");
932
933static PyTypeObject pyrf_evsel__type = {
934 PyVarObject_HEAD_INIT(NULL, 0)
935 .tp_name = "perf.evsel",
936 .tp_basicsize = sizeof(struct pyrf_evsel),
937 .tp_dealloc = (destructor)pyrf_evsel__delete,
938 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
939 .tp_doc = pyrf_evsel__doc,
940 .tp_methods = pyrf_evsel__methods,
941 .tp_init = (initproc)pyrf_evsel__init,
942};
943
944static int pyrf_evsel__setup_types(void)
945{
946 pyrf_evsel__type.tp_new = PyType_GenericNew;
947 return PyType_Ready(&pyrf_evsel__type);
948}
949
950struct pyrf_evlist {
951 PyObject_HEAD
952
953 struct evlist evlist;
954};
955
956static int pyrf_evlist__init(struct pyrf_evlist *pevlist,
957 PyObject *args, PyObject *kwargs __maybe_unused)
958{
959 PyObject *pcpus = NULL, *pthreads = NULL;
960 struct perf_cpu_map *cpus;
961 struct perf_thread_map *threads;
962
963 if (!PyArg_ParseTuple(args, "OO", &pcpus, &pthreads))
964 return -1;
965
966 threads = ((struct pyrf_thread_map *)pthreads)->threads;
967 cpus = ((struct pyrf_cpu_map *)pcpus)->cpus;
968 evlist__init(&pevlist->evlist, cpus, threads);
969 return 0;
970}
971
972static void pyrf_evlist__delete(struct pyrf_evlist *pevlist)
973{
974 evlist__exit(&pevlist->evlist);
975 Py_TYPE(pevlist)->tp_free((PyObject*)pevlist);
976}
977
978static PyObject *pyrf_evlist__mmap(struct pyrf_evlist *pevlist,
979 PyObject *args, PyObject *kwargs)
980{
981 struct evlist *evlist = &pevlist->evlist;
982 static char *kwlist[] = { "pages", "overwrite", NULL };
983 int pages = 128, overwrite = false;
984
985 if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|ii", kwlist,
986 &pages, &overwrite))
987 return NULL;
988
989 if (evlist__mmap(evlist, pages) < 0) {
990 PyErr_SetFromErrno(PyExc_OSError);
991 return NULL;
992 }
993
994 Py_INCREF(Py_None);
995 return Py_None;
996}
997
998static PyObject *pyrf_evlist__poll(struct pyrf_evlist *pevlist,
999 PyObject *args, PyObject *kwargs)
1000{
1001 struct evlist *evlist = &pevlist->evlist;
1002 static char *kwlist[] = { "timeout", NULL };
1003 int timeout = -1, n;
1004
1005 if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|i", kwlist, &timeout))
1006 return NULL;
1007
1008 n = evlist__poll(evlist, timeout);
1009 if (n < 0) {
1010 PyErr_SetFromErrno(PyExc_OSError);
1011 return NULL;
1012 }
1013
1014 return Py_BuildValue("i", n);
1015}
1016
1017static PyObject *pyrf_evlist__get_pollfd(struct pyrf_evlist *pevlist,
1018 PyObject *args __maybe_unused,
1019 PyObject *kwargs __maybe_unused)
1020{
1021 struct evlist *evlist = &pevlist->evlist;
1022 PyObject *list = PyList_New(0);
1023 int i;
1024
1025 for (i = 0; i < evlist->core.pollfd.nr; ++i) {
1026 PyObject *file;
1027#if PY_MAJOR_VERSION < 3
1028 FILE *fp = fdopen(evlist->core.pollfd.entries[i].fd, "r");
1029
1030 if (fp == NULL)
1031 goto free_list;
1032
1033 file = PyFile_FromFile(fp, "perf", "r", NULL);
1034#else
1035 file = PyFile_FromFd(evlist->core.pollfd.entries[i].fd, "perf", "r", -1,
1036 NULL, NULL, NULL, 0);
1037#endif
1038 if (file == NULL)
1039 goto free_list;
1040
1041 if (PyList_Append(list, file) != 0) {
1042 Py_DECREF(file);
1043 goto free_list;
1044 }
1045
1046 Py_DECREF(file);
1047 }
1048
1049 return list;
1050free_list:
1051 return PyErr_NoMemory();
1052}
1053
1054
1055static PyObject *pyrf_evlist__add(struct pyrf_evlist *pevlist,
1056 PyObject *args,
1057 PyObject *kwargs __maybe_unused)
1058{
1059 struct evlist *evlist = &pevlist->evlist;
1060 PyObject *pevsel;
1061 struct evsel *evsel;
1062
1063 if (!PyArg_ParseTuple(args, "O", &pevsel))
1064 return NULL;
1065
1066 Py_INCREF(pevsel);
1067 evsel = &((struct pyrf_evsel *)pevsel)->evsel;
1068 evsel->core.idx = evlist->core.nr_entries;
1069 evlist__add(evlist, evsel);
1070
1071 return Py_BuildValue("i", evlist->core.nr_entries);
1072}
1073
1074static struct mmap *get_md(struct evlist *evlist, int cpu)
1075{
1076 int i;
1077
1078 for (i = 0; i < evlist->core.nr_mmaps; i++) {
1079 struct mmap *md = &evlist->mmap[i];
1080
1081 if (md->core.cpu.cpu == cpu)
1082 return md;
1083 }
1084
1085 return NULL;
1086}
1087
1088static PyObject *pyrf_evlist__read_on_cpu(struct pyrf_evlist *pevlist,
1089 PyObject *args, PyObject *kwargs)
1090{
1091 struct evlist *evlist = &pevlist->evlist;
1092 union perf_event *event;
1093 int sample_id_all = 1, cpu;
1094 static char *kwlist[] = { "cpu", "sample_id_all", NULL };
1095 struct mmap *md;
1096 int err;
1097
1098 if (!PyArg_ParseTupleAndKeywords(args, kwargs, "i|i", kwlist,
1099 &cpu, &sample_id_all))
1100 return NULL;
1101
1102 md = get_md(evlist, cpu);
1103 if (!md)
1104 return NULL;
1105
1106 if (perf_mmap__read_init(&md->core) < 0)
1107 goto end;
1108
1109 event = perf_mmap__read_event(&md->core);
1110 if (event != NULL) {
1111 PyObject *pyevent = pyrf_event__new(event);
1112 struct pyrf_event *pevent = (struct pyrf_event *)pyevent;
1113 struct evsel *evsel;
1114
1115 if (pyevent == NULL)
1116 return PyErr_NoMemory();
1117
1118 evsel = evlist__event2evsel(evlist, event);
1119 if (!evsel) {
1120 Py_INCREF(Py_None);
1121 return Py_None;
1122 }
1123
1124 pevent->evsel = evsel;
1125
1126 err = evsel__parse_sample(evsel, event, &pevent->sample);
1127
1128 /* Consume the even only after we parsed it out. */
1129 perf_mmap__consume(&md->core);
1130
1131 if (err)
1132 return PyErr_Format(PyExc_OSError,
1133 "perf: can't parse sample, err=%d", err);
1134 return pyevent;
1135 }
1136end:
1137 Py_INCREF(Py_None);
1138 return Py_None;
1139}
1140
1141static PyObject *pyrf_evlist__open(struct pyrf_evlist *pevlist,
1142 PyObject *args, PyObject *kwargs)
1143{
1144 struct evlist *evlist = &pevlist->evlist;
1145
1146 if (evlist__open(evlist) < 0) {
1147 PyErr_SetFromErrno(PyExc_OSError);
1148 return NULL;
1149 }
1150
1151 Py_INCREF(Py_None);
1152 return Py_None;
1153}
1154
1155static PyMethodDef pyrf_evlist__methods[] = {
1156 {
1157 .ml_name = "mmap",
1158 .ml_meth = (PyCFunction)pyrf_evlist__mmap,
1159 .ml_flags = METH_VARARGS | METH_KEYWORDS,
1160 .ml_doc = PyDoc_STR("mmap the file descriptor table.")
1161 },
1162 {
1163 .ml_name = "open",
1164 .ml_meth = (PyCFunction)pyrf_evlist__open,
1165 .ml_flags = METH_VARARGS | METH_KEYWORDS,
1166 .ml_doc = PyDoc_STR("open the file descriptors.")
1167 },
1168 {
1169 .ml_name = "poll",
1170 .ml_meth = (PyCFunction)pyrf_evlist__poll,
1171 .ml_flags = METH_VARARGS | METH_KEYWORDS,
1172 .ml_doc = PyDoc_STR("poll the file descriptor table.")
1173 },
1174 {
1175 .ml_name = "get_pollfd",
1176 .ml_meth = (PyCFunction)pyrf_evlist__get_pollfd,
1177 .ml_flags = METH_VARARGS | METH_KEYWORDS,
1178 .ml_doc = PyDoc_STR("get the poll file descriptor table.")
1179 },
1180 {
1181 .ml_name = "add",
1182 .ml_meth = (PyCFunction)pyrf_evlist__add,
1183 .ml_flags = METH_VARARGS | METH_KEYWORDS,
1184 .ml_doc = PyDoc_STR("adds an event selector to the list.")
1185 },
1186 {
1187 .ml_name = "read_on_cpu",
1188 .ml_meth = (PyCFunction)pyrf_evlist__read_on_cpu,
1189 .ml_flags = METH_VARARGS | METH_KEYWORDS,
1190 .ml_doc = PyDoc_STR("reads an event.")
1191 },
1192 { .ml_name = NULL, }
1193};
1194
1195static Py_ssize_t pyrf_evlist__length(PyObject *obj)
1196{
1197 struct pyrf_evlist *pevlist = (void *)obj;
1198
1199 return pevlist->evlist.core.nr_entries;
1200}
1201
1202static PyObject *pyrf_evlist__item(PyObject *obj, Py_ssize_t i)
1203{
1204 struct pyrf_evlist *pevlist = (void *)obj;
1205 struct evsel *pos;
1206
1207 if (i >= pevlist->evlist.core.nr_entries)
1208 return NULL;
1209
1210 evlist__for_each_entry(&pevlist->evlist, pos) {
1211 if (i-- == 0)
1212 break;
1213 }
1214
1215 return Py_BuildValue("O", container_of(pos, struct pyrf_evsel, evsel));
1216}
1217
1218static PySequenceMethods pyrf_evlist__sequence_methods = {
1219 .sq_length = pyrf_evlist__length,
1220 .sq_item = pyrf_evlist__item,
1221};
1222
1223static char pyrf_evlist__doc[] = PyDoc_STR("perf event selector list object.");
1224
1225static PyTypeObject pyrf_evlist__type = {
1226 PyVarObject_HEAD_INIT(NULL, 0)
1227 .tp_name = "perf.evlist",
1228 .tp_basicsize = sizeof(struct pyrf_evlist),
1229 .tp_dealloc = (destructor)pyrf_evlist__delete,
1230 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
1231 .tp_as_sequence = &pyrf_evlist__sequence_methods,
1232 .tp_doc = pyrf_evlist__doc,
1233 .tp_methods = pyrf_evlist__methods,
1234 .tp_init = (initproc)pyrf_evlist__init,
1235};
1236
1237static int pyrf_evlist__setup_types(void)
1238{
1239 pyrf_evlist__type.tp_new = PyType_GenericNew;
1240 return PyType_Ready(&pyrf_evlist__type);
1241}
1242
1243#define PERF_CONST(name) { #name, PERF_##name }
1244
1245static struct {
1246 const char *name;
1247 int value;
1248} perf__constants[] = {
1249 PERF_CONST(TYPE_HARDWARE),
1250 PERF_CONST(TYPE_SOFTWARE),
1251 PERF_CONST(TYPE_TRACEPOINT),
1252 PERF_CONST(TYPE_HW_CACHE),
1253 PERF_CONST(TYPE_RAW),
1254 PERF_CONST(TYPE_BREAKPOINT),
1255
1256 PERF_CONST(COUNT_HW_CPU_CYCLES),
1257 PERF_CONST(COUNT_HW_INSTRUCTIONS),
1258 PERF_CONST(COUNT_HW_CACHE_REFERENCES),
1259 PERF_CONST(COUNT_HW_CACHE_MISSES),
1260 PERF_CONST(COUNT_HW_BRANCH_INSTRUCTIONS),
1261 PERF_CONST(COUNT_HW_BRANCH_MISSES),
1262 PERF_CONST(COUNT_HW_BUS_CYCLES),
1263 PERF_CONST(COUNT_HW_CACHE_L1D),
1264 PERF_CONST(COUNT_HW_CACHE_L1I),
1265 PERF_CONST(COUNT_HW_CACHE_LL),
1266 PERF_CONST(COUNT_HW_CACHE_DTLB),
1267 PERF_CONST(COUNT_HW_CACHE_ITLB),
1268 PERF_CONST(COUNT_HW_CACHE_BPU),
1269 PERF_CONST(COUNT_HW_CACHE_OP_READ),
1270 PERF_CONST(COUNT_HW_CACHE_OP_WRITE),
1271 PERF_CONST(COUNT_HW_CACHE_OP_PREFETCH),
1272 PERF_CONST(COUNT_HW_CACHE_RESULT_ACCESS),
1273 PERF_CONST(COUNT_HW_CACHE_RESULT_MISS),
1274
1275 PERF_CONST(COUNT_HW_STALLED_CYCLES_FRONTEND),
1276 PERF_CONST(COUNT_HW_STALLED_CYCLES_BACKEND),
1277
1278 PERF_CONST(COUNT_SW_CPU_CLOCK),
1279 PERF_CONST(COUNT_SW_TASK_CLOCK),
1280 PERF_CONST(COUNT_SW_PAGE_FAULTS),
1281 PERF_CONST(COUNT_SW_CONTEXT_SWITCHES),
1282 PERF_CONST(COUNT_SW_CPU_MIGRATIONS),
1283 PERF_CONST(COUNT_SW_PAGE_FAULTS_MIN),
1284 PERF_CONST(COUNT_SW_PAGE_FAULTS_MAJ),
1285 PERF_CONST(COUNT_SW_ALIGNMENT_FAULTS),
1286 PERF_CONST(COUNT_SW_EMULATION_FAULTS),
1287 PERF_CONST(COUNT_SW_DUMMY),
1288
1289 PERF_CONST(SAMPLE_IP),
1290 PERF_CONST(SAMPLE_TID),
1291 PERF_CONST(SAMPLE_TIME),
1292 PERF_CONST(SAMPLE_ADDR),
1293 PERF_CONST(SAMPLE_READ),
1294 PERF_CONST(SAMPLE_CALLCHAIN),
1295 PERF_CONST(SAMPLE_ID),
1296 PERF_CONST(SAMPLE_CPU),
1297 PERF_CONST(SAMPLE_PERIOD),
1298 PERF_CONST(SAMPLE_STREAM_ID),
1299 PERF_CONST(SAMPLE_RAW),
1300
1301 PERF_CONST(FORMAT_TOTAL_TIME_ENABLED),
1302 PERF_CONST(FORMAT_TOTAL_TIME_RUNNING),
1303 PERF_CONST(FORMAT_ID),
1304 PERF_CONST(FORMAT_GROUP),
1305
1306 PERF_CONST(RECORD_MMAP),
1307 PERF_CONST(RECORD_LOST),
1308 PERF_CONST(RECORD_COMM),
1309 PERF_CONST(RECORD_EXIT),
1310 PERF_CONST(RECORD_THROTTLE),
1311 PERF_CONST(RECORD_UNTHROTTLE),
1312 PERF_CONST(RECORD_FORK),
1313 PERF_CONST(RECORD_READ),
1314 PERF_CONST(RECORD_SAMPLE),
1315 PERF_CONST(RECORD_MMAP2),
1316 PERF_CONST(RECORD_AUX),
1317 PERF_CONST(RECORD_ITRACE_START),
1318 PERF_CONST(RECORD_LOST_SAMPLES),
1319 PERF_CONST(RECORD_SWITCH),
1320 PERF_CONST(RECORD_SWITCH_CPU_WIDE),
1321
1322 PERF_CONST(RECORD_MISC_SWITCH_OUT),
1323 { .name = NULL, },
1324};
1325
1326static PyObject *pyrf__tracepoint(struct pyrf_evsel *pevsel,
1327 PyObject *args, PyObject *kwargs)
1328{
1329#ifndef HAVE_LIBTRACEEVENT
1330 return NULL;
1331#else
1332 struct tep_event *tp_format;
1333 static char *kwlist[] = { "sys", "name", NULL };
1334 char *sys = NULL;
1335 char *name = NULL;
1336
1337 if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|ss", kwlist,
1338 &sys, &name))
1339 return NULL;
1340
1341 tp_format = trace_event__tp_format(sys, name);
1342 if (IS_ERR(tp_format))
1343 return _PyLong_FromLong(-1);
1344
1345 return _PyLong_FromLong(tp_format->id);
1346#endif // HAVE_LIBTRACEEVENT
1347}
1348
1349static PyMethodDef perf__methods[] = {
1350 {
1351 .ml_name = "tracepoint",
1352 .ml_meth = (PyCFunction) pyrf__tracepoint,
1353 .ml_flags = METH_VARARGS | METH_KEYWORDS,
1354 .ml_doc = PyDoc_STR("Get tracepoint config.")
1355 },
1356 { .ml_name = NULL, }
1357};
1358
1359#if PY_MAJOR_VERSION < 3
1360PyMODINIT_FUNC initperf(void)
1361#else
1362PyMODINIT_FUNC PyInit_perf(void)
1363#endif
1364{
1365 PyObject *obj;
1366 int i;
1367 PyObject *dict;
1368#if PY_MAJOR_VERSION < 3
1369 PyObject *module = Py_InitModule("perf", perf__methods);
1370#else
1371 static struct PyModuleDef moduledef = {
1372 PyModuleDef_HEAD_INIT,
1373 "perf", /* m_name */
1374 "", /* m_doc */
1375 -1, /* m_size */
1376 perf__methods, /* m_methods */
1377 NULL, /* m_reload */
1378 NULL, /* m_traverse */
1379 NULL, /* m_clear */
1380 NULL, /* m_free */
1381 };
1382 PyObject *module = PyModule_Create(&moduledef);
1383#endif
1384
1385 if (module == NULL ||
1386 pyrf_event__setup_types() < 0 ||
1387 pyrf_evlist__setup_types() < 0 ||
1388 pyrf_evsel__setup_types() < 0 ||
1389 pyrf_thread_map__setup_types() < 0 ||
1390 pyrf_cpu_map__setup_types() < 0)
1391#if PY_MAJOR_VERSION < 3
1392 return;
1393#else
1394 return module;
1395#endif
1396
1397 /* The page_size is placed in util object. */
1398 page_size = sysconf(_SC_PAGE_SIZE);
1399
1400 Py_INCREF(&pyrf_evlist__type);
1401 PyModule_AddObject(module, "evlist", (PyObject*)&pyrf_evlist__type);
1402
1403 Py_INCREF(&pyrf_evsel__type);
1404 PyModule_AddObject(module, "evsel", (PyObject*)&pyrf_evsel__type);
1405
1406 Py_INCREF(&pyrf_mmap_event__type);
1407 PyModule_AddObject(module, "mmap_event", (PyObject *)&pyrf_mmap_event__type);
1408
1409 Py_INCREF(&pyrf_lost_event__type);
1410 PyModule_AddObject(module, "lost_event", (PyObject *)&pyrf_lost_event__type);
1411
1412 Py_INCREF(&pyrf_comm_event__type);
1413 PyModule_AddObject(module, "comm_event", (PyObject *)&pyrf_comm_event__type);
1414
1415 Py_INCREF(&pyrf_task_event__type);
1416 PyModule_AddObject(module, "task_event", (PyObject *)&pyrf_task_event__type);
1417
1418 Py_INCREF(&pyrf_throttle_event__type);
1419 PyModule_AddObject(module, "throttle_event", (PyObject *)&pyrf_throttle_event__type);
1420
1421 Py_INCREF(&pyrf_task_event__type);
1422 PyModule_AddObject(module, "task_event", (PyObject *)&pyrf_task_event__type);
1423
1424 Py_INCREF(&pyrf_read_event__type);
1425 PyModule_AddObject(module, "read_event", (PyObject *)&pyrf_read_event__type);
1426
1427 Py_INCREF(&pyrf_sample_event__type);
1428 PyModule_AddObject(module, "sample_event", (PyObject *)&pyrf_sample_event__type);
1429
1430 Py_INCREF(&pyrf_context_switch_event__type);
1431 PyModule_AddObject(module, "switch_event", (PyObject *)&pyrf_context_switch_event__type);
1432
1433 Py_INCREF(&pyrf_thread_map__type);
1434 PyModule_AddObject(module, "thread_map", (PyObject*)&pyrf_thread_map__type);
1435
1436 Py_INCREF(&pyrf_cpu_map__type);
1437 PyModule_AddObject(module, "cpu_map", (PyObject*)&pyrf_cpu_map__type);
1438
1439 dict = PyModule_GetDict(module);
1440 if (dict == NULL)
1441 goto error;
1442
1443 for (i = 0; perf__constants[i].name != NULL; i++) {
1444 obj = _PyLong_FromLong(perf__constants[i].value);
1445 if (obj == NULL)
1446 goto error;
1447 PyDict_SetItemString(dict, perf__constants[i].name, obj);
1448 Py_DECREF(obj);
1449 }
1450
1451error:
1452 if (PyErr_Occurred())
1453 PyErr_SetString(PyExc_ImportError, "perf: Init failed!");
1454#if PY_MAJOR_VERSION >= 3
1455 return module;
1456#endif
1457}
1458
1459/*
1460 * Dummy, to avoid dragging all the test_attr infrastructure in the python
1461 * binding.
1462 */
1463void test_attr__open(struct perf_event_attr *attr, pid_t pid, struct perf_cpu cpu,
1464 int fd, int group_fd, unsigned long flags)
1465{
1466}