1#include <Python.h>
2#include <structmember.h>
3#include <inttypes.h>
4#include <poll.h>
5#include "evlist.h"
6#include "evsel.h"
7#include "event.h"
8#include "cpumap.h"
9#include "thread_map.h"
10
11
12#ifndef PyVarObject_HEAD_INIT
13# define PyVarObject_HEAD_INIT(type, size) PyObject_HEAD_INIT(type) size,
14#endif
15
16struct throttle_event {
17 struct perf_event_header header;
18 u64 time;
19 u64 id;
20 u64 stream_id;
21};
22
23PyMODINIT_FUNC initperf(void);
24
25#define member_def(type, member, ptype, help) \
26 { #member, ptype, \
27 offsetof(struct pyrf_event, event) + offsetof(struct type, member), \
28 0, help }
29
30#define sample_member_def(name, member, ptype, help) \
31 { #name, ptype, \
32 offsetof(struct pyrf_event, sample) + offsetof(struct perf_sample, member), \
33 0, help }
34
35struct pyrf_event {
36 PyObject_HEAD
37 struct perf_sample sample;
38 union perf_event event;
39};
40
41#define sample_members \
42 sample_member_def(sample_ip, ip, T_ULONGLONG, "event type"), \
43 sample_member_def(sample_pid, pid, T_INT, "event pid"), \
44 sample_member_def(sample_tid, tid, T_INT, "event tid"), \
45 sample_member_def(sample_time, time, T_ULONGLONG, "event timestamp"), \
46 sample_member_def(sample_addr, addr, T_ULONGLONG, "event addr"), \
47 sample_member_def(sample_id, id, T_ULONGLONG, "event id"), \
48 sample_member_def(sample_stream_id, stream_id, T_ULONGLONG, "event stream id"), \
49 sample_member_def(sample_period, period, T_ULONGLONG, "event period"), \
50 sample_member_def(sample_cpu, cpu, T_UINT, "event cpu"),
51
52static char pyrf_mmap_event__doc[] = PyDoc_STR("perf mmap event object.");
53
54static PyMemberDef pyrf_mmap_event__members[] = {
55 sample_members
56 member_def(perf_event_header, type, T_UINT, "event type"),
57 member_def(mmap_event, pid, T_UINT, "event pid"),
58 member_def(mmap_event, tid, T_UINT, "event tid"),
59 member_def(mmap_event, start, T_ULONGLONG, "start of the map"),
60 member_def(mmap_event, len, T_ULONGLONG, "map length"),
61 member_def(mmap_event, pgoff, T_ULONGLONG, "page offset"),
62 member_def(mmap_event, filename, T_STRING_INPLACE, "backing store"),
63 { .name = NULL, },
64};
65
66static PyObject *pyrf_mmap_event__repr(struct pyrf_event *pevent)
67{
68 PyObject *ret;
69 char *s;
70
71 if (asprintf(&s, "{ type: mmap, pid: %u, tid: %u, start: %#" PRIx64 ", "
72 "length: %#" PRIx64 ", offset: %#" PRIx64 ", "
73 "filename: %s }",
74 pevent->event.mmap.pid, pevent->event.mmap.tid,
75 pevent->event.mmap.start, pevent->event.mmap.len,
76 pevent->event.mmap.pgoff, pevent->event.mmap.filename) < 0) {
77 ret = PyErr_NoMemory();
78 } else {
79 ret = PyString_FromString(s);
80 free(s);
81 }
82 return ret;
83}
84
85static PyTypeObject pyrf_mmap_event__type = {
86 PyVarObject_HEAD_INIT(NULL, 0)
87 .tp_name = "perf.mmap_event",
88 .tp_basicsize = sizeof(struct pyrf_event),
89 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
90 .tp_doc = pyrf_mmap_event__doc,
91 .tp_members = pyrf_mmap_event__members,
92 .tp_repr = (reprfunc)pyrf_mmap_event__repr,
93};
94
95static char pyrf_task_event__doc[] = PyDoc_STR("perf task (fork/exit) event object.");
96
97static PyMemberDef pyrf_task_event__members[] = {
98 sample_members
99 member_def(perf_event_header, type, T_UINT, "event type"),
100 member_def(fork_event, pid, T_UINT, "event pid"),
101 member_def(fork_event, ppid, T_UINT, "event ppid"),
102 member_def(fork_event, tid, T_UINT, "event tid"),
103 member_def(fork_event, ptid, T_UINT, "event ptid"),
104 member_def(fork_event, time, T_ULONGLONG, "timestamp"),
105 { .name = NULL, },
106};
107
108static PyObject *pyrf_task_event__repr(struct pyrf_event *pevent)
109{
110 return PyString_FromFormat("{ type: %s, pid: %u, ppid: %u, tid: %u, "
111 "ptid: %u, time: %" PRIu64 "}",
112 pevent->event.header.type == PERF_RECORD_FORK ? "fork" : "exit",
113 pevent->event.fork.pid,
114 pevent->event.fork.ppid,
115 pevent->event.fork.tid,
116 pevent->event.fork.ptid,
117 pevent->event.fork.time);
118}
119
120static PyTypeObject pyrf_task_event__type = {
121 PyVarObject_HEAD_INIT(NULL, 0)
122 .tp_name = "perf.task_event",
123 .tp_basicsize = sizeof(struct pyrf_event),
124 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
125 .tp_doc = pyrf_task_event__doc,
126 .tp_members = pyrf_task_event__members,
127 .tp_repr = (reprfunc)pyrf_task_event__repr,
128};
129
130static char pyrf_comm_event__doc[] = PyDoc_STR("perf comm event object.");
131
132static PyMemberDef pyrf_comm_event__members[] = {
133 sample_members
134 member_def(perf_event_header, type, T_UINT, "event type"),
135 member_def(comm_event, pid, T_UINT, "event pid"),
136 member_def(comm_event, tid, T_UINT, "event tid"),
137 member_def(comm_event, comm, T_STRING_INPLACE, "process name"),
138 { .name = NULL, },
139};
140
141static PyObject *pyrf_comm_event__repr(struct pyrf_event *pevent)
142{
143 return PyString_FromFormat("{ type: comm, pid: %u, tid: %u, comm: %s }",
144 pevent->event.comm.pid,
145 pevent->event.comm.tid,
146 pevent->event.comm.comm);
147}
148
149static PyTypeObject pyrf_comm_event__type = {
150 PyVarObject_HEAD_INIT(NULL, 0)
151 .tp_name = "perf.comm_event",
152 .tp_basicsize = sizeof(struct pyrf_event),
153 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
154 .tp_doc = pyrf_comm_event__doc,
155 .tp_members = pyrf_comm_event__members,
156 .tp_repr = (reprfunc)pyrf_comm_event__repr,
157};
158
159static char pyrf_throttle_event__doc[] = PyDoc_STR("perf throttle event object.");
160
161static PyMemberDef pyrf_throttle_event__members[] = {
162 sample_members
163 member_def(perf_event_header, type, T_UINT, "event type"),
164 member_def(throttle_event, time, T_ULONGLONG, "timestamp"),
165 member_def(throttle_event, id, T_ULONGLONG, "event id"),
166 member_def(throttle_event, stream_id, T_ULONGLONG, "event stream id"),
167 { .name = NULL, },
168};
169
170static PyObject *pyrf_throttle_event__repr(struct pyrf_event *pevent)
171{
172 struct throttle_event *te = (struct throttle_event *)(&pevent->event.header + 1);
173
174 return PyString_FromFormat("{ type: %sthrottle, time: %" PRIu64 ", id: %" PRIu64
175 ", stream_id: %" PRIu64 " }",
176 pevent->event.header.type == PERF_RECORD_THROTTLE ? "" : "un",
177 te->time, te->id, te->stream_id);
178}
179
180static PyTypeObject pyrf_throttle_event__type = {
181 PyVarObject_HEAD_INIT(NULL, 0)
182 .tp_name = "perf.throttle_event",
183 .tp_basicsize = sizeof(struct pyrf_event),
184 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
185 .tp_doc = pyrf_throttle_event__doc,
186 .tp_members = pyrf_throttle_event__members,
187 .tp_repr = (reprfunc)pyrf_throttle_event__repr,
188};
189
190static char pyrf_lost_event__doc[] = PyDoc_STR("perf lost event object.");
191
192static PyMemberDef pyrf_lost_event__members[] = {
193 sample_members
194 member_def(lost_event, id, T_ULONGLONG, "event id"),
195 member_def(lost_event, lost, T_ULONGLONG, "number of lost events"),
196 { .name = NULL, },
197};
198
199static PyObject *pyrf_lost_event__repr(struct pyrf_event *pevent)
200{
201 PyObject *ret;
202 char *s;
203
204 if (asprintf(&s, "{ type: lost, id: %#" PRIx64 ", "
205 "lost: %#" PRIx64 " }",
206 pevent->event.lost.id, pevent->event.lost.lost) < 0) {
207 ret = PyErr_NoMemory();
208 } else {
209 ret = PyString_FromString(s);
210 free(s);
211 }
212 return ret;
213}
214
215static PyTypeObject pyrf_lost_event__type = {
216 PyVarObject_HEAD_INIT(NULL, 0)
217 .tp_name = "perf.lost_event",
218 .tp_basicsize = sizeof(struct pyrf_event),
219 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
220 .tp_doc = pyrf_lost_event__doc,
221 .tp_members = pyrf_lost_event__members,
222 .tp_repr = (reprfunc)pyrf_lost_event__repr,
223};
224
225static char pyrf_read_event__doc[] = PyDoc_STR("perf read event object.");
226
227static PyMemberDef pyrf_read_event__members[] = {
228 sample_members
229 member_def(read_event, pid, T_UINT, "event pid"),
230 member_def(read_event, tid, T_UINT, "event tid"),
231 { .name = NULL, },
232};
233
234static PyObject *pyrf_read_event__repr(struct pyrf_event *pevent)
235{
236 return PyString_FromFormat("{ type: read, pid: %u, tid: %u }",
237 pevent->event.read.pid,
238 pevent->event.read.tid);
239
240
241
242
243}
244
245static PyTypeObject pyrf_read_event__type = {
246 PyVarObject_HEAD_INIT(NULL, 0)
247 .tp_name = "perf.read_event",
248 .tp_basicsize = sizeof(struct pyrf_event),
249 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
250 .tp_doc = pyrf_read_event__doc,
251 .tp_members = pyrf_read_event__members,
252 .tp_repr = (reprfunc)pyrf_read_event__repr,
253};
254
255static char pyrf_sample_event__doc[] = PyDoc_STR("perf sample event object.");
256
257static PyMemberDef pyrf_sample_event__members[] = {
258 sample_members
259 member_def(perf_event_header, type, T_UINT, "event type"),
260 { .name = NULL, },
261};
262
263static PyObject *pyrf_sample_event__repr(struct pyrf_event *pevent)
264{
265 PyObject *ret;
266 char *s;
267
268 if (asprintf(&s, "{ type: sample }") < 0) {
269 ret = PyErr_NoMemory();
270 } else {
271 ret = PyString_FromString(s);
272 free(s);
273 }
274 return ret;
275}
276
277static PyTypeObject pyrf_sample_event__type = {
278 PyVarObject_HEAD_INIT(NULL, 0)
279 .tp_name = "perf.sample_event",
280 .tp_basicsize = sizeof(struct pyrf_event),
281 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
282 .tp_doc = pyrf_sample_event__doc,
283 .tp_members = pyrf_sample_event__members,
284 .tp_repr = (reprfunc)pyrf_sample_event__repr,
285};
286
287static int pyrf_event__setup_types(void)
288{
289 int err;
290 pyrf_mmap_event__type.tp_new =
291 pyrf_task_event__type.tp_new =
292 pyrf_comm_event__type.tp_new =
293 pyrf_lost_event__type.tp_new =
294 pyrf_read_event__type.tp_new =
295 pyrf_sample_event__type.tp_new =
296 pyrf_throttle_event__type.tp_new = PyType_GenericNew;
297 err = PyType_Ready(&pyrf_mmap_event__type);
298 if (err < 0)
299 goto out;
300 err = PyType_Ready(&pyrf_lost_event__type);
301 if (err < 0)
302 goto out;
303 err = PyType_Ready(&pyrf_task_event__type);
304 if (err < 0)
305 goto out;
306 err = PyType_Ready(&pyrf_comm_event__type);
307 if (err < 0)
308 goto out;
309 err = PyType_Ready(&pyrf_throttle_event__type);
310 if (err < 0)
311 goto out;
312 err = PyType_Ready(&pyrf_read_event__type);
313 if (err < 0)
314 goto out;
315 err = PyType_Ready(&pyrf_sample_event__type);
316 if (err < 0)
317 goto out;
318out:
319 return err;
320}
321
322static PyTypeObject *pyrf_event__type[] = {
323 [PERF_RECORD_MMAP] = &pyrf_mmap_event__type,
324 [PERF_RECORD_LOST] = &pyrf_lost_event__type,
325 [PERF_RECORD_COMM] = &pyrf_comm_event__type,
326 [PERF_RECORD_EXIT] = &pyrf_task_event__type,
327 [PERF_RECORD_THROTTLE] = &pyrf_throttle_event__type,
328 [PERF_RECORD_UNTHROTTLE] = &pyrf_throttle_event__type,
329 [PERF_RECORD_FORK] = &pyrf_task_event__type,
330 [PERF_RECORD_READ] = &pyrf_read_event__type,
331 [PERF_RECORD_SAMPLE] = &pyrf_sample_event__type,
332};
333
334static PyObject *pyrf_event__new(union perf_event *event)
335{
336 struct pyrf_event *pevent;
337 PyTypeObject *ptype;
338
339 if (event->header.type < PERF_RECORD_MMAP ||
340 event->header.type > PERF_RECORD_SAMPLE)
341 return NULL;
342
343 ptype = pyrf_event__type[event->header.type];
344 pevent = PyObject_New(struct pyrf_event, ptype);
345 if (pevent != NULL)
346 memcpy(&pevent->event, event, event->header.size);
347 return (PyObject *)pevent;
348}
349
350struct pyrf_cpu_map {
351 PyObject_HEAD
352
353 struct cpu_map *cpus;
354};
355
356static int pyrf_cpu_map__init(struct pyrf_cpu_map *pcpus,
357 PyObject *args, PyObject *kwargs)
358{
359 static char *kwlist[] = { "cpustr", NULL };
360 char *cpustr = NULL;
361
362 if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|s",
363 kwlist, &cpustr))
364 return -1;
365
366 pcpus->cpus = cpu_map__new(cpustr);
367 if (pcpus->cpus == NULL)
368 return -1;
369 return 0;
370}
371
372static void pyrf_cpu_map__delete(struct pyrf_cpu_map *pcpus)
373{
374 cpu_map__delete(pcpus->cpus);
375 pcpus->ob_type->tp_free((PyObject*)pcpus);
376}
377
378static Py_ssize_t pyrf_cpu_map__length(PyObject *obj)
379{
380 struct pyrf_cpu_map *pcpus = (void *)obj;
381
382 return pcpus->cpus->nr;
383}
384
385static PyObject *pyrf_cpu_map__item(PyObject *obj, Py_ssize_t i)
386{
387 struct pyrf_cpu_map *pcpus = (void *)obj;
388
389 if (i >= pcpus->cpus->nr)
390 return NULL;
391
392 return Py_BuildValue("i", pcpus->cpus->map[i]);
393}
394
395static PySequenceMethods pyrf_cpu_map__sequence_methods = {
396 .sq_length = pyrf_cpu_map__length,
397 .sq_item = pyrf_cpu_map__item,
398};
399
400static char pyrf_cpu_map__doc[] = PyDoc_STR("cpu map object.");
401
402static PyTypeObject pyrf_cpu_map__type = {
403 PyVarObject_HEAD_INIT(NULL, 0)
404 .tp_name = "perf.cpu_map",
405 .tp_basicsize = sizeof(struct pyrf_cpu_map),
406 .tp_dealloc = (destructor)pyrf_cpu_map__delete,
407 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
408 .tp_doc = pyrf_cpu_map__doc,
409 .tp_as_sequence = &pyrf_cpu_map__sequence_methods,
410 .tp_init = (initproc)pyrf_cpu_map__init,
411};
412
413static int pyrf_cpu_map__setup_types(void)
414{
415 pyrf_cpu_map__type.tp_new = PyType_GenericNew;
416 return PyType_Ready(&pyrf_cpu_map__type);
417}
418
419struct pyrf_thread_map {
420 PyObject_HEAD
421
422 struct thread_map *threads;
423};
424
425static int pyrf_thread_map__init(struct pyrf_thread_map *pthreads,
426 PyObject *args, PyObject *kwargs)
427{
428 static char *kwlist[] = { "pid", "tid", NULL };
429 int pid = -1, tid = -1;
430
431 if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|ii",
432 kwlist, &pid, &tid))
433 return -1;
434
435 pthreads->threads = thread_map__new(pid, tid);
436 if (pthreads->threads == NULL)
437 return -1;
438 return 0;
439}
440
441static void pyrf_thread_map__delete(struct pyrf_thread_map *pthreads)
442{
443 thread_map__delete(pthreads->threads);
444 pthreads->ob_type->tp_free((PyObject*)pthreads);
445}
446
447static Py_ssize_t pyrf_thread_map__length(PyObject *obj)
448{
449 struct pyrf_thread_map *pthreads = (void *)obj;
450
451 return pthreads->threads->nr;
452}
453
454static PyObject *pyrf_thread_map__item(PyObject *obj, Py_ssize_t i)
455{
456 struct pyrf_thread_map *pthreads = (void *)obj;
457
458 if (i >= pthreads->threads->nr)
459 return NULL;
460
461 return Py_BuildValue("i", pthreads->threads->map[i]);
462}
463
464static PySequenceMethods pyrf_thread_map__sequence_methods = {
465 .sq_length = pyrf_thread_map__length,
466 .sq_item = pyrf_thread_map__item,
467};
468
469static char pyrf_thread_map__doc[] = PyDoc_STR("thread map object.");
470
471static PyTypeObject pyrf_thread_map__type = {
472 PyVarObject_HEAD_INIT(NULL, 0)
473 .tp_name = "perf.thread_map",
474 .tp_basicsize = sizeof(struct pyrf_thread_map),
475 .tp_dealloc = (destructor)pyrf_thread_map__delete,
476 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
477 .tp_doc = pyrf_thread_map__doc,
478 .tp_as_sequence = &pyrf_thread_map__sequence_methods,
479 .tp_init = (initproc)pyrf_thread_map__init,
480};
481
482static int pyrf_thread_map__setup_types(void)
483{
484 pyrf_thread_map__type.tp_new = PyType_GenericNew;
485 return PyType_Ready(&pyrf_thread_map__type);
486}
487
488struct pyrf_evsel {
489 PyObject_HEAD
490
491 struct perf_evsel evsel;
492};
493
494static int pyrf_evsel__init(struct pyrf_evsel *pevsel,
495 PyObject *args, PyObject *kwargs)
496{
497 struct perf_event_attr attr = {
498 .type = PERF_TYPE_HARDWARE,
499 .config = PERF_COUNT_HW_CPU_CYCLES,
500 .sample_type = PERF_SAMPLE_PERIOD | PERF_SAMPLE_TID,
501 };
502 static char *kwlist[] = {
503 "type",
504 "config",
505 "sample_freq",
506 "sample_period",
507 "sample_type",
508 "read_format",
509 "disabled",
510 "inherit",
511 "pinned",
512 "exclusive",
513 "exclude_user",
514 "exclude_kernel",
515 "exclude_hv",
516 "exclude_idle",
517 "mmap",
518 "comm",
519 "freq",
520 "inherit_stat",
521 "enable_on_exec",
522 "task",
523 "watermark",
524 "precise_ip",
525 "mmap_data",
526 "sample_id_all",
527 "wakeup_events",
528 "bp_type",
529 "bp_addr",
530 "bp_len",
531 NULL
532 };
533 u64 sample_period = 0;
534 u32 disabled = 0,
535 inherit = 0,
536 pinned = 0,
537 exclusive = 0,
538 exclude_user = 0,
539 exclude_kernel = 0,
540 exclude_hv = 0,
541 exclude_idle = 0,
542 mmap = 0,
543 comm = 0,
544 freq = 1,
545 inherit_stat = 0,
546 enable_on_exec = 0,
547 task = 0,
548 watermark = 0,
549 precise_ip = 0,
550 mmap_data = 0,
551 sample_id_all = 1;
552 int idx = 0;
553
554 if (!PyArg_ParseTupleAndKeywords(args, kwargs,
555 "|iKiKKiiiiiiiiiiiiiiiiiiiiiKK", kwlist,
556 &attr.type, &attr.config, &attr.sample_freq,
557 &sample_period, &attr.sample_type,
558 &attr.read_format, &disabled, &inherit,
559 &pinned, &exclusive, &exclude_user,
560 &exclude_kernel, &exclude_hv, &exclude_idle,
561 &mmap, &comm, &freq, &inherit_stat,
562 &enable_on_exec, &task, &watermark,
563 &precise_ip, &mmap_data, &sample_id_all,
564 &attr.wakeup_events, &attr.bp_type,
565 &attr.bp_addr, &attr.bp_len, &idx))
566 return -1;
567
568
569 if (sample_period != 0) {
570 if (attr.sample_freq != 0)
571 return -1;
572 attr.sample_period = sample_period;
573 }
574
575
576 attr.disabled = disabled;
577 attr.inherit = inherit;
578 attr.pinned = pinned;
579 attr.exclusive = exclusive;
580 attr.exclude_user = exclude_user;
581 attr.exclude_kernel = exclude_kernel;
582 attr.exclude_hv = exclude_hv;
583 attr.exclude_idle = exclude_idle;
584 attr.mmap = mmap;
585 attr.comm = comm;
586 attr.freq = freq;
587 attr.inherit_stat = inherit_stat;
588 attr.enable_on_exec = enable_on_exec;
589 attr.task = task;
590 attr.watermark = watermark;
591 attr.precise_ip = precise_ip;
592 attr.mmap_data = mmap_data;
593 attr.sample_id_all = sample_id_all;
594
595 perf_evsel__init(&pevsel->evsel, &attr, idx);
596 return 0;
597}
598
599static void pyrf_evsel__delete(struct pyrf_evsel *pevsel)
600{
601 perf_evsel__exit(&pevsel->evsel);
602 pevsel->ob_type->tp_free((PyObject*)pevsel);
603}
604
605static PyObject *pyrf_evsel__open(struct pyrf_evsel *pevsel,
606 PyObject *args, PyObject *kwargs)
607{
608 struct perf_evsel *evsel = &pevsel->evsel;
609 struct cpu_map *cpus = NULL;
610 struct thread_map *threads = NULL;
611 PyObject *pcpus = NULL, *pthreads = NULL;
612 int group = 0, inherit = 0;
613 static char *kwlist[] = { "cpus", "threads", "group", "inherit", NULL };
614
615 if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|OOii", kwlist,
616 &pcpus, &pthreads, &group, &inherit))
617 return NULL;
618
619 if (pthreads != NULL)
620 threads = ((struct pyrf_thread_map *)pthreads)->threads;
621
622 if (pcpus != NULL)
623 cpus = ((struct pyrf_cpu_map *)pcpus)->cpus;
624
625 evsel->attr.inherit = inherit;
626 if (perf_evsel__open(evsel, cpus, threads, group) < 0) {
627 PyErr_SetFromErrno(PyExc_OSError);
628 return NULL;
629 }
630
631 Py_INCREF(Py_None);
632 return Py_None;
633}
634
635static PyMethodDef pyrf_evsel__methods[] = {
636 {
637 .ml_name = "open",
638 .ml_meth = (PyCFunction)pyrf_evsel__open,
639 .ml_flags = METH_VARARGS | METH_KEYWORDS,
640 .ml_doc = PyDoc_STR("open the event selector file descriptor table.")
641 },
642 { .ml_name = NULL, }
643};
644
645static char pyrf_evsel__doc[] = PyDoc_STR("perf event selector list object.");
646
647static PyTypeObject pyrf_evsel__type = {
648 PyVarObject_HEAD_INIT(NULL, 0)
649 .tp_name = "perf.evsel",
650 .tp_basicsize = sizeof(struct pyrf_evsel),
651 .tp_dealloc = (destructor)pyrf_evsel__delete,
652 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
653 .tp_doc = pyrf_evsel__doc,
654 .tp_methods = pyrf_evsel__methods,
655 .tp_init = (initproc)pyrf_evsel__init,
656};
657
658static int pyrf_evsel__setup_types(void)
659{
660 pyrf_evsel__type.tp_new = PyType_GenericNew;
661 return PyType_Ready(&pyrf_evsel__type);
662}
663
664struct pyrf_evlist {
665 PyObject_HEAD
666
667 struct perf_evlist evlist;
668};
669
670static int pyrf_evlist__init(struct pyrf_evlist *pevlist,
671 PyObject *args, PyObject *kwargs __used)
672{
673 PyObject *pcpus = NULL, *pthreads = NULL;
674 struct cpu_map *cpus;
675 struct thread_map *threads;
676
677 if (!PyArg_ParseTuple(args, "OO", &pcpus, &pthreads))
678 return -1;
679
680 threads = ((struct pyrf_thread_map *)pthreads)->threads;
681 cpus = ((struct pyrf_cpu_map *)pcpus)->cpus;
682 perf_evlist__init(&pevlist->evlist, cpus, threads);
683 return 0;
684}
685
686static void pyrf_evlist__delete(struct pyrf_evlist *pevlist)
687{
688 perf_evlist__exit(&pevlist->evlist);
689 pevlist->ob_type->tp_free((PyObject*)pevlist);
690}
691
692static PyObject *pyrf_evlist__mmap(struct pyrf_evlist *pevlist,
693 PyObject *args, PyObject *kwargs)
694{
695 struct perf_evlist *evlist = &pevlist->evlist;
696 static char *kwlist[] = { "pages", "overwrite", NULL };
697 int pages = 128, overwrite = false;
698
699 if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|ii", kwlist,
700 &pages, &overwrite))
701 return NULL;
702
703 if (perf_evlist__mmap(evlist, pages, overwrite) < 0) {
704 PyErr_SetFromErrno(PyExc_OSError);
705 return NULL;
706 }
707
708 Py_INCREF(Py_None);
709 return Py_None;
710}
711
712static PyObject *pyrf_evlist__poll(struct pyrf_evlist *pevlist,
713 PyObject *args, PyObject *kwargs)
714{
715 struct perf_evlist *evlist = &pevlist->evlist;
716 static char *kwlist[] = { "timeout", NULL };
717 int timeout = -1, n;
718
719 if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|i", kwlist, &timeout))
720 return NULL;
721
722 n = poll(evlist->pollfd, evlist->nr_fds, timeout);
723 if (n < 0) {
724 PyErr_SetFromErrno(PyExc_OSError);
725 return NULL;
726 }
727
728 return Py_BuildValue("i", n);
729}
730
731static PyObject *pyrf_evlist__get_pollfd(struct pyrf_evlist *pevlist,
732 PyObject *args __used, PyObject *kwargs __used)
733{
734 struct perf_evlist *evlist = &pevlist->evlist;
735 PyObject *list = PyList_New(0);
736 int i;
737
738 for (i = 0; i < evlist->nr_fds; ++i) {
739 PyObject *file;
740 FILE *fp = fdopen(evlist->pollfd[i].fd, "r");
741
742 if (fp == NULL)
743 goto free_list;
744
745 file = PyFile_FromFile(fp, "perf", "r", NULL);
746 if (file == NULL)
747 goto free_list;
748
749 if (PyList_Append(list, file) != 0) {
750 Py_DECREF(file);
751 goto free_list;
752 }
753
754 Py_DECREF(file);
755 }
756
757 return list;
758free_list:
759 return PyErr_NoMemory();
760}
761
762
763static PyObject *pyrf_evlist__add(struct pyrf_evlist *pevlist,
764 PyObject *args, PyObject *kwargs __used)
765{
766 struct perf_evlist *evlist = &pevlist->evlist;
767 PyObject *pevsel;
768 struct perf_evsel *evsel;
769
770 if (!PyArg_ParseTuple(args, "O", &pevsel))
771 return NULL;
772
773 Py_INCREF(pevsel);
774 evsel = &((struct pyrf_evsel *)pevsel)->evsel;
775 evsel->idx = evlist->nr_entries;
776 perf_evlist__add(evlist, evsel);
777
778 return Py_BuildValue("i", evlist->nr_entries);
779}
780
781static PyObject *pyrf_evlist__read_on_cpu(struct pyrf_evlist *pevlist,
782 PyObject *args, PyObject *kwargs)
783{
784 struct perf_evlist *evlist = &pevlist->evlist;
785 union perf_event *event;
786 int sample_id_all = 1, cpu;
787 static char *kwlist[] = { "cpu", "sample_id_all", NULL };
788 int err;
789
790 if (!PyArg_ParseTupleAndKeywords(args, kwargs, "i|i", kwlist,
791 &cpu, &sample_id_all))
792 return NULL;
793
794 event = perf_evlist__mmap_read(evlist, cpu);
795 if (event != NULL) {
796 struct perf_evsel *first;
797 PyObject *pyevent = pyrf_event__new(event);
798 struct pyrf_event *pevent = (struct pyrf_event *)pyevent;
799
800 if (pyevent == NULL)
801 return PyErr_NoMemory();
802
803 first = list_entry(evlist->entries.next, struct perf_evsel, node);
804 err = perf_event__parse_sample(event, first->attr.sample_type,
805 perf_evsel__sample_size(first),
806 sample_id_all, &pevent->sample, false);
807 if (err)
808 return PyErr_Format(PyExc_OSError,
809 "perf: can't parse sample, err=%d", err);
810 return pyevent;
811 }
812
813 Py_INCREF(Py_None);
814 return Py_None;
815}
816
817static PyMethodDef pyrf_evlist__methods[] = {
818 {
819 .ml_name = "mmap",
820 .ml_meth = (PyCFunction)pyrf_evlist__mmap,
821 .ml_flags = METH_VARARGS | METH_KEYWORDS,
822 .ml_doc = PyDoc_STR("mmap the file descriptor table.")
823 },
824 {
825 .ml_name = "poll",
826 .ml_meth = (PyCFunction)pyrf_evlist__poll,
827 .ml_flags = METH_VARARGS | METH_KEYWORDS,
828 .ml_doc = PyDoc_STR("poll the file descriptor table.")
829 },
830 {
831 .ml_name = "get_pollfd",
832 .ml_meth = (PyCFunction)pyrf_evlist__get_pollfd,
833 .ml_flags = METH_VARARGS | METH_KEYWORDS,
834 .ml_doc = PyDoc_STR("get the poll file descriptor table.")
835 },
836 {
837 .ml_name = "add",
838 .ml_meth = (PyCFunction)pyrf_evlist__add,
839 .ml_flags = METH_VARARGS | METH_KEYWORDS,
840 .ml_doc = PyDoc_STR("adds an event selector to the list.")
841 },
842 {
843 .ml_name = "read_on_cpu",
844 .ml_meth = (PyCFunction)pyrf_evlist__read_on_cpu,
845 .ml_flags = METH_VARARGS | METH_KEYWORDS,
846 .ml_doc = PyDoc_STR("reads an event.")
847 },
848 { .ml_name = NULL, }
849};
850
851static Py_ssize_t pyrf_evlist__length(PyObject *obj)
852{
853 struct pyrf_evlist *pevlist = (void *)obj;
854
855 return pevlist->evlist.nr_entries;
856}
857
858static PyObject *pyrf_evlist__item(PyObject *obj, Py_ssize_t i)
859{
860 struct pyrf_evlist *pevlist = (void *)obj;
861 struct perf_evsel *pos;
862
863 if (i >= pevlist->evlist.nr_entries)
864 return NULL;
865
866 list_for_each_entry(pos, &pevlist->evlist.entries, node)
867 if (i-- == 0)
868 break;
869
870 return Py_BuildValue("O", container_of(pos, struct pyrf_evsel, evsel));
871}
872
873static PySequenceMethods pyrf_evlist__sequence_methods = {
874 .sq_length = pyrf_evlist__length,
875 .sq_item = pyrf_evlist__item,
876};
877
878static char pyrf_evlist__doc[] = PyDoc_STR("perf event selector list object.");
879
880static PyTypeObject pyrf_evlist__type = {
881 PyVarObject_HEAD_INIT(NULL, 0)
882 .tp_name = "perf.evlist",
883 .tp_basicsize = sizeof(struct pyrf_evlist),
884 .tp_dealloc = (destructor)pyrf_evlist__delete,
885 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
886 .tp_as_sequence = &pyrf_evlist__sequence_methods,
887 .tp_doc = pyrf_evlist__doc,
888 .tp_methods = pyrf_evlist__methods,
889 .tp_init = (initproc)pyrf_evlist__init,
890};
891
892static int pyrf_evlist__setup_types(void)
893{
894 pyrf_evlist__type.tp_new = PyType_GenericNew;
895 return PyType_Ready(&pyrf_evlist__type);
896}
897
898static struct {
899 const char *name;
900 int value;
901} perf__constants[] = {
902 { "TYPE_HARDWARE", PERF_TYPE_HARDWARE },
903 { "TYPE_SOFTWARE", PERF_TYPE_SOFTWARE },
904 { "TYPE_TRACEPOINT", PERF_TYPE_TRACEPOINT },
905 { "TYPE_HW_CACHE", PERF_TYPE_HW_CACHE },
906 { "TYPE_RAW", PERF_TYPE_RAW },
907 { "TYPE_BREAKPOINT", PERF_TYPE_BREAKPOINT },
908
909 { "COUNT_HW_CPU_CYCLES", PERF_COUNT_HW_CPU_CYCLES },
910 { "COUNT_HW_INSTRUCTIONS", PERF_COUNT_HW_INSTRUCTIONS },
911 { "COUNT_HW_CACHE_REFERENCES", PERF_COUNT_HW_CACHE_REFERENCES },
912 { "COUNT_HW_CACHE_MISSES", PERF_COUNT_HW_CACHE_MISSES },
913 { "COUNT_HW_BRANCH_INSTRUCTIONS", PERF_COUNT_HW_BRANCH_INSTRUCTIONS },
914 { "COUNT_HW_BRANCH_MISSES", PERF_COUNT_HW_BRANCH_MISSES },
915 { "COUNT_HW_BUS_CYCLES", PERF_COUNT_HW_BUS_CYCLES },
916 { "COUNT_HW_CACHE_L1D", PERF_COUNT_HW_CACHE_L1D },
917 { "COUNT_HW_CACHE_L1I", PERF_COUNT_HW_CACHE_L1I },
918 { "COUNT_HW_CACHE_LL", PERF_COUNT_HW_CACHE_LL },
919 { "COUNT_HW_CACHE_DTLB", PERF_COUNT_HW_CACHE_DTLB },
920 { "COUNT_HW_CACHE_ITLB", PERF_COUNT_HW_CACHE_ITLB },
921 { "COUNT_HW_CACHE_BPU", PERF_COUNT_HW_CACHE_BPU },
922 { "COUNT_HW_CACHE_OP_READ", PERF_COUNT_HW_CACHE_OP_READ },
923 { "COUNT_HW_CACHE_OP_WRITE", PERF_COUNT_HW_CACHE_OP_WRITE },
924 { "COUNT_HW_CACHE_OP_PREFETCH", PERF_COUNT_HW_CACHE_OP_PREFETCH },
925 { "COUNT_HW_CACHE_RESULT_ACCESS", PERF_COUNT_HW_CACHE_RESULT_ACCESS },
926 { "COUNT_HW_CACHE_RESULT_MISS", PERF_COUNT_HW_CACHE_RESULT_MISS },
927
928 { "COUNT_HW_STALLED_CYCLES_FRONTEND", PERF_COUNT_HW_STALLED_CYCLES_FRONTEND },
929 { "COUNT_HW_STALLED_CYCLES_BACKEND", PERF_COUNT_HW_STALLED_CYCLES_BACKEND },
930
931 { "COUNT_SW_CPU_CLOCK", PERF_COUNT_SW_CPU_CLOCK },
932 { "COUNT_SW_TASK_CLOCK", PERF_COUNT_SW_TASK_CLOCK },
933 { "COUNT_SW_PAGE_FAULTS", PERF_COUNT_SW_PAGE_FAULTS },
934 { "COUNT_SW_CONTEXT_SWITCHES", PERF_COUNT_SW_CONTEXT_SWITCHES },
935 { "COUNT_SW_CPU_MIGRATIONS", PERF_COUNT_SW_CPU_MIGRATIONS },
936 { "COUNT_SW_PAGE_FAULTS_MIN", PERF_COUNT_SW_PAGE_FAULTS_MIN },
937 { "COUNT_SW_PAGE_FAULTS_MAJ", PERF_COUNT_SW_PAGE_FAULTS_MAJ },
938 { "COUNT_SW_ALIGNMENT_FAULTS", PERF_COUNT_SW_ALIGNMENT_FAULTS },
939 { "COUNT_SW_EMULATION_FAULTS", PERF_COUNT_SW_EMULATION_FAULTS },
940
941 { "SAMPLE_IP", PERF_SAMPLE_IP },
942 { "SAMPLE_TID", PERF_SAMPLE_TID },
943 { "SAMPLE_TIME", PERF_SAMPLE_TIME },
944 { "SAMPLE_ADDR", PERF_SAMPLE_ADDR },
945 { "SAMPLE_READ", PERF_SAMPLE_READ },
946 { "SAMPLE_CALLCHAIN", PERF_SAMPLE_CALLCHAIN },
947 { "SAMPLE_ID", PERF_SAMPLE_ID },
948 { "SAMPLE_CPU", PERF_SAMPLE_CPU },
949 { "SAMPLE_PERIOD", PERF_SAMPLE_PERIOD },
950 { "SAMPLE_STREAM_ID", PERF_SAMPLE_STREAM_ID },
951 { "SAMPLE_RAW", PERF_SAMPLE_RAW },
952
953 { "FORMAT_TOTAL_TIME_ENABLED", PERF_FORMAT_TOTAL_TIME_ENABLED },
954 { "FORMAT_TOTAL_TIME_RUNNING", PERF_FORMAT_TOTAL_TIME_RUNNING },
955 { "FORMAT_ID", PERF_FORMAT_ID },
956 { "FORMAT_GROUP", PERF_FORMAT_GROUP },
957
958 { "RECORD_MMAP", PERF_RECORD_MMAP },
959 { "RECORD_LOST", PERF_RECORD_LOST },
960 { "RECORD_COMM", PERF_RECORD_COMM },
961 { "RECORD_EXIT", PERF_RECORD_EXIT },
962 { "RECORD_THROTTLE", PERF_RECORD_THROTTLE },
963 { "RECORD_UNTHROTTLE", PERF_RECORD_UNTHROTTLE },
964 { "RECORD_FORK", PERF_RECORD_FORK },
965 { "RECORD_READ", PERF_RECORD_READ },
966 { "RECORD_SAMPLE", PERF_RECORD_SAMPLE },
967 { .name = NULL, },
968};
969
970static PyMethodDef perf__methods[] = {
971 { .ml_name = NULL, }
972};
973
974PyMODINIT_FUNC initperf(void)
975{
976 PyObject *obj;
977 int i;
978 PyObject *dict, *module = Py_InitModule("perf", perf__methods);
979
980 if (module == NULL ||
981 pyrf_event__setup_types() < 0 ||
982 pyrf_evlist__setup_types() < 0 ||
983 pyrf_evsel__setup_types() < 0 ||
984 pyrf_thread_map__setup_types() < 0 ||
985 pyrf_cpu_map__setup_types() < 0)
986 return;
987
988 Py_INCREF(&pyrf_evlist__type);
989 PyModule_AddObject(module, "evlist", (PyObject*)&pyrf_evlist__type);
990
991 Py_INCREF(&pyrf_evsel__type);
992 PyModule_AddObject(module, "evsel", (PyObject*)&pyrf_evsel__type);
993
994 Py_INCREF(&pyrf_thread_map__type);
995 PyModule_AddObject(module, "thread_map", (PyObject*)&pyrf_thread_map__type);
996
997 Py_INCREF(&pyrf_cpu_map__type);
998 PyModule_AddObject(module, "cpu_map", (PyObject*)&pyrf_cpu_map__type);
999
1000 dict = PyModule_GetDict(module);
1001 if (dict == NULL)
1002 goto error;
1003
1004 for (i = 0; perf__constants[i].name != NULL; i++) {
1005 obj = PyInt_FromLong(perf__constants[i].value);
1006 if (obj == NULL)
1007 goto error;
1008 PyDict_SetItemString(dict, perf__constants[i].name, obj);
1009 Py_DECREF(obj);
1010 }
1011
1012error:
1013 if (PyErr_Occurred())
1014 PyErr_SetString(PyExc_ImportError, "perf: Init failed!");
1015}
1016
