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perf evlist: Fix per thread mmap setup
[linux-2.6-block.git] / tools / perf / util / python.c
CommitLineData
877108e4
ACM		 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
cfff2d90
FW		 11/* Define PyVarObject_HEAD_INIT for python 2.5 */
12#ifndef PyVarObject_HEAD_INIT
13# define PyVarObject_HEAD_INIT(type, size) PyObject_HEAD_INIT(type) size,
14#endif
15
877108e4
ACM		 16struct throttle_event {
17 struct perf_event_header header;
18 u64 time;
19 u64 id;
20 u64 stream_id;
21};
22
f6bbc1da
ACM		 23PyMODINIT_FUNC initperf(void);
24
877108e4
ACM		 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
877108e4 41#define sample_members \
f6bbc1da 42 sample_member_def(sample_ip, ip, T_ULONGLONG, "event type"), \
877108e4
ACM		 43 sample_member_def(sample_pid, pid, T_INT, "event pid"), \
44 sample_member_def(sample_tid, tid, T_INT, "event tid"), \
f6bbc1da
ACM		 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"), \
877108e4
ACM		 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"),
f6bbc1da
ACM		 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"),
877108e4 62 member_def(mmap_event, filename, T_STRING_INPLACE, "backing store"),
f6bbc1da 63 { .name = NULL, },
877108e4
ACM		 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"),
f6bbc1da
ACM		 104 member_def(fork_event, time, T_ULONGLONG, "timestamp"),
105 { .name = NULL, },
877108e4
ACM		 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"),
f6bbc1da 138 { .name = NULL, },
877108e4
ACM		 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"),
f6bbc1da
ACM		 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, },
877108e4
ACM		 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 int pyrf_event__setup_types(void)
191{
192 int err;
193 pyrf_mmap_event__type.tp_new =
194 pyrf_task_event__type.tp_new =
195 pyrf_comm_event__type.tp_new =
196 pyrf_throttle_event__type.tp_new = PyType_GenericNew;
197 err = PyType_Ready(&pyrf_mmap_event__type);
198 if (err < 0)
199 goto out;
200 err = PyType_Ready(&pyrf_task_event__type);
201 if (err < 0)
202 goto out;
203 err = PyType_Ready(&pyrf_comm_event__type);
204 if (err < 0)
205 goto out;
206 err = PyType_Ready(&pyrf_throttle_event__type);
207 if (err < 0)
208 goto out;
209out:
210 return err;
211}
212
213static PyTypeObject *pyrf_event__type[] = {
214 [PERF_RECORD_MMAP] = &pyrf_mmap_event__type,
215 [PERF_RECORD_LOST] = &pyrf_mmap_event__type,
216 [PERF_RECORD_COMM] = &pyrf_comm_event__type,
217 [PERF_RECORD_EXIT] = &pyrf_task_event__type,
218 [PERF_RECORD_THROTTLE] = &pyrf_throttle_event__type,
219 [PERF_RECORD_UNTHROTTLE] = &pyrf_throttle_event__type,
220 [PERF_RECORD_FORK] = &pyrf_task_event__type,
221 [PERF_RECORD_READ] = &pyrf_mmap_event__type,
222 [PERF_RECORD_SAMPLE] = &pyrf_mmap_event__type,
223};
224
225static PyObject *pyrf_event__new(union perf_event *event)
226{
227 struct pyrf_event *pevent;
228 PyTypeObject *ptype;
229
230 if (event->header.type < PERF_RECORD_MMAP ||
231 event->header.type > PERF_RECORD_SAMPLE)
232 return NULL;
233
234 ptype = pyrf_event__type[event->header.type];
235 pevent = PyObject_New(struct pyrf_event, ptype);
236 if (pevent != NULL)
237 memcpy(&pevent->event, event, event->header.size);
238 return (PyObject *)pevent;
239}
240
241struct pyrf_cpu_map {
242 PyObject_HEAD
243
244 struct cpu_map *cpus;
245};
246
247static int pyrf_cpu_map__init(struct pyrf_cpu_map *pcpus,
248 PyObject *args, PyObject *kwargs)
249{
250 static char *kwlist[] = { "cpustr", NULL, NULL, };
251 char *cpustr = NULL;
252
253 if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|s",
254 kwlist, &cpustr))
255 return -1;
256
257 pcpus->cpus = cpu_map__new(cpustr);
258 if (pcpus->cpus == NULL)
259 return -1;
260 return 0;
261}
262
263static void pyrf_cpu_map__delete(struct pyrf_cpu_map *pcpus)
264{
265 cpu_map__delete(pcpus->cpus);
266 pcpus->ob_type->tp_free((PyObject*)pcpus);
267}
268
269static Py_ssize_t pyrf_cpu_map__length(PyObject *obj)
270{
271 struct pyrf_cpu_map *pcpus = (void *)obj;
272
273 return pcpus->cpus->nr;
274}
275
276static PyObject *pyrf_cpu_map__item(PyObject *obj, Py_ssize_t i)
277{
278 struct pyrf_cpu_map *pcpus = (void *)obj;
279
280 if (i >= pcpus->cpus->nr)
281 return NULL;
282
283 return Py_BuildValue("i", pcpus->cpus->map[i]);
284}
285
286static PySequenceMethods pyrf_cpu_map__sequence_methods = {
287 .sq_length = pyrf_cpu_map__length,
288 .sq_item = pyrf_cpu_map__item,
289};
290
291static char pyrf_cpu_map__doc[] = PyDoc_STR("cpu map object.");
292
293static PyTypeObject pyrf_cpu_map__type = {
294 PyVarObject_HEAD_INIT(NULL, 0)
295 .tp_name = "perf.cpu_map",
296 .tp_basicsize = sizeof(struct pyrf_cpu_map),
297 .tp_dealloc = (destructor)pyrf_cpu_map__delete,
298 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
299 .tp_doc = pyrf_cpu_map__doc,
300 .tp_as_sequence = &pyrf_cpu_map__sequence_methods,
301 .tp_init = (initproc)pyrf_cpu_map__init,
302};
303
304static int pyrf_cpu_map__setup_types(void)
305{
306 pyrf_cpu_map__type.tp_new = PyType_GenericNew;
307 return PyType_Ready(&pyrf_cpu_map__type);
308}
309
310struct pyrf_thread_map {
311 PyObject_HEAD
312
313 struct thread_map *threads;
314};
315
316static int pyrf_thread_map__init(struct pyrf_thread_map *pthreads,
317 PyObject *args, PyObject *kwargs)
318{
319 static char *kwlist[] = { "pid", "tid", NULL, NULL, };
320 int pid = -1, tid = -1;
321
322 if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|ii",
323 kwlist, &pid, &tid))
324 return -1;
325
326 pthreads->threads = thread_map__new(pid, tid);
327 if (pthreads->threads == NULL)
328 return -1;
329 return 0;
330}
331
332static void pyrf_thread_map__delete(struct pyrf_thread_map *pthreads)
333{
334 thread_map__delete(pthreads->threads);
335 pthreads->ob_type->tp_free((PyObject*)pthreads);
336}
337
338static Py_ssize_t pyrf_thread_map__length(PyObject *obj)
339{
340 struct pyrf_thread_map *pthreads = (void *)obj;
341
342 return pthreads->threads->nr;
343}
344
345static PyObject *pyrf_thread_map__item(PyObject *obj, Py_ssize_t i)
346{
347 struct pyrf_thread_map *pthreads = (void *)obj;
348
349 if (i >= pthreads->threads->nr)
350 return NULL;
351
352 return Py_BuildValue("i", pthreads->threads->map[i]);
353}
354
355static PySequenceMethods pyrf_thread_map__sequence_methods = {
356 .sq_length = pyrf_thread_map__length,
357 .sq_item = pyrf_thread_map__item,
358};
359
360static char pyrf_thread_map__doc[] = PyDoc_STR("thread map object.");
361
362static PyTypeObject pyrf_thread_map__type = {
363 PyVarObject_HEAD_INIT(NULL, 0)
364 .tp_name = "perf.thread_map",
365 .tp_basicsize = sizeof(struct pyrf_thread_map),
366 .tp_dealloc = (destructor)pyrf_thread_map__delete,
367 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
368 .tp_doc = pyrf_thread_map__doc,
369 .tp_as_sequence = &pyrf_thread_map__sequence_methods,
370 .tp_init = (initproc)pyrf_thread_map__init,
371};
372
373static int pyrf_thread_map__setup_types(void)
374{
375 pyrf_thread_map__type.tp_new = PyType_GenericNew;
376 return PyType_Ready(&pyrf_thread_map__type);
377}
378
379struct pyrf_evsel {
380 PyObject_HEAD
381
382 struct perf_evsel evsel;
383};
384
385static int pyrf_evsel__init(struct pyrf_evsel *pevsel,
386 PyObject *args, PyObject *kwargs)
387{
388 struct perf_event_attr attr = {
389 .type = PERF_TYPE_HARDWARE,
390 .config = PERF_COUNT_HW_CPU_CYCLES,
391 .sample_type = PERF_SAMPLE_PERIOD | PERF_SAMPLE_TID,
392 };
393 static char *kwlist[] = {
394 "type",
395 "config",
396 "sample_freq",
397 "sample_period",
398 "sample_type",
399 "read_format",
400 "disabled",
401 "inherit",
402 "pinned",
403 "exclusive",
404 "exclude_user",
405 "exclude_kernel",
406 "exclude_hv",
407 "exclude_idle",
408 "mmap",
409 "comm",
410 "freq",
411 "inherit_stat",
412 "enable_on_exec",
413 "task",
414 "watermark",
415 "precise_ip",
416 "mmap_data",
417 "sample_id_all",
418 "wakeup_events",
419 "bp_type",
420 "bp_addr",
421 "bp_len", NULL, NULL, };
422 u64 sample_period = 0;
423 u32 disabled = 0,
424 inherit = 0,
425 pinned = 0,
426 exclusive = 0,
427 exclude_user = 0,
428 exclude_kernel = 0,
429 exclude_hv = 0,
430 exclude_idle = 0,
431 mmap = 0,
432 comm = 0,
433 freq = 1,
434 inherit_stat = 0,
435 enable_on_exec = 0,
436 task = 0,
437 watermark = 0,
438 precise_ip = 0,
439 mmap_data = 0,
440 sample_id_all = 1;
441 int idx = 0;
442
443 if (!PyArg_ParseTupleAndKeywords(args, kwargs,
444 "|iKiKKiiiiiiiiiiiiiiiiiiiiiKK", kwlist,
445 &attr.type, &attr.config, &attr.sample_freq,
446 &sample_period, &attr.sample_type,
447 &attr.read_format, &disabled, &inherit,
448 &pinned, &exclusive, &exclude_user,
449 &exclude_kernel, &exclude_hv, &exclude_idle,
450 &mmap, &comm, &freq, &inherit_stat,
451 &enable_on_exec, &task, &watermark,
452 &precise_ip, &mmap_data, &sample_id_all,
453 &attr.wakeup_events, &attr.bp_type,
454 &attr.bp_addr, &attr.bp_len, &idx))
455 return -1;
456
457 /* union... */
458 if (sample_period != 0) {
459 if (attr.sample_freq != 0)
460 return -1; /* FIXME: throw right exception */
461 attr.sample_period = sample_period;
462 }
463
464 /* Bitfields */
465 attr.disabled = disabled;
466 attr.inherit = inherit;
467 attr.pinned = pinned;
468 attr.exclusive = exclusive;
469 attr.exclude_user = exclude_user;
470 attr.exclude_kernel = exclude_kernel;
471 attr.exclude_hv = exclude_hv;
472 attr.exclude_idle = exclude_idle;
473 attr.mmap = mmap;
474 attr.comm = comm;
475 attr.freq = freq;
476 attr.inherit_stat = inherit_stat;
477 attr.enable_on_exec = enable_on_exec;
478 attr.task = task;
479 attr.watermark = watermark;
480 attr.precise_ip = precise_ip;
481 attr.mmap_data = mmap_data;
482 attr.sample_id_all = sample_id_all;
483
484 perf_evsel__init(&pevsel->evsel, &attr, idx);
485 return 0;
486}
487
488static void pyrf_evsel__delete(struct pyrf_evsel *pevsel)
489{
490 perf_evsel__exit(&pevsel->evsel);
491 pevsel->ob_type->tp_free((PyObject*)pevsel);
492}
493
494static PyObject *pyrf_evsel__open(struct pyrf_evsel *pevsel,
495 PyObject *args, PyObject *kwargs)
496{
497 struct perf_evsel *evsel = &pevsel->evsel;
498 struct cpu_map *cpus = NULL;
499 struct thread_map *threads = NULL;
500 PyObject *pcpus = NULL, *pthreads = NULL;
5d2cd909
ACM		 501 int group = 0, inherit = 0;
502 static char *kwlist[] = {"cpus", "threads", "group", "inherit", NULL, NULL};
877108e4
ACM		 503
504 if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|OOii", kwlist,
5d2cd909 505 &pcpus, &pthreads, &group, &inherit))
877108e4
ACM		 506 return NULL;
507
508 if (pthreads != NULL)
509 threads = ((struct pyrf_thread_map *)pthreads)->threads;
510
511 if (pcpus != NULL)
512 cpus = ((struct pyrf_cpu_map *)pcpus)->cpus;
513
5d2cd909
ACM		 514 evsel->attr.inherit = inherit;
515 if (perf_evsel__open(evsel, cpus, threads, group) < 0) {
877108e4
ACM		 516 PyErr_SetFromErrno(PyExc_OSError);
517 return NULL;
518 }
519
520 Py_INCREF(Py_None);
521 return Py_None;
522}
523
524static PyMethodDef pyrf_evsel__methods[] = {
525 {
526 .ml_name = "open",
527 .ml_meth = (PyCFunction)pyrf_evsel__open,
528 .ml_flags = METH_VARARGS | METH_KEYWORDS,
529 .ml_doc = PyDoc_STR("open the event selector file descriptor table.")
530 },
f6bbc1da 531 { .ml_name = NULL, }
877108e4
ACM		 532};
533
534static char pyrf_evsel__doc[] = PyDoc_STR("perf event selector list object.");
535
536static PyTypeObject pyrf_evsel__type = {
537 PyVarObject_HEAD_INIT(NULL, 0)
538 .tp_name = "perf.evsel",
539 .tp_basicsize = sizeof(struct pyrf_evsel),
540 .tp_dealloc = (destructor)pyrf_evsel__delete,
541 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
542 .tp_doc = pyrf_evsel__doc,
543 .tp_methods = pyrf_evsel__methods,
544 .tp_init = (initproc)pyrf_evsel__init,
545};
546
547static int pyrf_evsel__setup_types(void)
548{
549 pyrf_evsel__type.tp_new = PyType_GenericNew;
550 return PyType_Ready(&pyrf_evsel__type);
551}
552
553struct pyrf_evlist {
554 PyObject_HEAD
555
556 struct perf_evlist evlist;
557};
558
559static int pyrf_evlist__init(struct pyrf_evlist *pevlist,
f6bbc1da 560 PyObject *args, PyObject *kwargs __used)
877108e4 561{
7e2ed097
ACM		 562 PyObject *pcpus = NULL, *pthreads = NULL;
563 struct cpu_map *cpus;
564 struct thread_map *threads;
565
566 if (!PyArg_ParseTuple(args, "OO", &pcpus, &pthreads))
567 return -1;
568
569 threads = ((struct pyrf_thread_map *)pthreads)->threads;
570 cpus = ((struct pyrf_cpu_map *)pcpus)->cpus;
571 perf_evlist__init(&pevlist->evlist, cpus, threads);
877108e4
ACM		 572 return 0;
573}
574
575static void pyrf_evlist__delete(struct pyrf_evlist *pevlist)
576{
577 perf_evlist__exit(&pevlist->evlist);
578 pevlist->ob_type->tp_free((PyObject*)pevlist);
579}
580
581static PyObject *pyrf_evlist__mmap(struct pyrf_evlist *pevlist,
582 PyObject *args, PyObject *kwargs)
583{
584 struct perf_evlist *evlist = &pevlist->evlist;
7e2ed097 585 static char *kwlist[] = {"pages", "overwrite",
877108e4
ACM		 586 NULL, NULL};
587 int pages = 128, overwrite = false;
588
7e2ed097
ACM		 589 if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|ii", kwlist,
590 &pages, &overwrite))
877108e4
ACM		 591 return NULL;
592
7e2ed097 593 if (perf_evlist__mmap(evlist, pages, overwrite) < 0) {
877108e4
ACM		 594 PyErr_SetFromErrno(PyExc_OSError);
595 return NULL;
596 }
597
598 Py_INCREF(Py_None);
599 return Py_None;
600}
601
602static PyObject *pyrf_evlist__poll(struct pyrf_evlist *pevlist,
603 PyObject *args, PyObject *kwargs)
604{
605 struct perf_evlist *evlist = &pevlist->evlist;
606 static char *kwlist[] = {"timeout", NULL, NULL};
607 int timeout = -1, n;
608
609 if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|i", kwlist, &timeout))
610 return NULL;
611
612 n = poll(evlist->pollfd, evlist->nr_fds, timeout);
613 if (n < 0) {
614 PyErr_SetFromErrno(PyExc_OSError);
615 return NULL;
616 }
617
618 return Py_BuildValue("i", n);
619}
620
621static PyObject *pyrf_evlist__get_pollfd(struct pyrf_evlist *pevlist,
f6bbc1da 622 PyObject *args __used, PyObject *kwargs __used)
877108e4
ACM		 623{
624 struct perf_evlist *evlist = &pevlist->evlist;
625 PyObject *list = PyList_New(0);
626 int i;
627
628 for (i = 0; i < evlist->nr_fds; ++i) {
629 PyObject *file;
630 FILE *fp = fdopen(evlist->pollfd[i].fd, "r");
631
632 if (fp == NULL)
633 goto free_list;
634
635 file = PyFile_FromFile(fp, "perf", "r", NULL);
636 if (file == NULL)
637 goto free_list;
638
639 if (PyList_Append(list, file) != 0) {
640 Py_DECREF(file);
641 goto free_list;
642 }
643
644 Py_DECREF(file);
645 }
646
647 return list;
648free_list:
649 return PyErr_NoMemory();
650}
651
652
653static PyObject *pyrf_evlist__add(struct pyrf_evlist *pevlist,
f6bbc1da 654 PyObject *args, PyObject *kwargs __used)
877108e4
ACM		 655{
656 struct perf_evlist *evlist = &pevlist->evlist;
657 PyObject *pevsel;
658 struct perf_evsel *evsel;
659
660 if (!PyArg_ParseTuple(args, "O", &pevsel))
661 return NULL;
662
663 Py_INCREF(pevsel);
664 evsel = &((struct pyrf_evsel *)pevsel)->evsel;
665 evsel->idx = evlist->nr_entries;
666 perf_evlist__add(evlist, evsel);
667
668 return Py_BuildValue("i", evlist->nr_entries);
669}
670
671static PyObject *pyrf_evlist__read_on_cpu(struct pyrf_evlist *pevlist,
672 PyObject *args, PyObject *kwargs)
673{
674 struct perf_evlist *evlist = &pevlist->evlist;
675 union perf_event *event;
676 int sample_id_all = 1, cpu;
677 static char *kwlist[] = {"sample_id_all", NULL, NULL};
678
679 if (!PyArg_ParseTupleAndKeywords(args, kwargs, "i|i", kwlist,
680 &cpu, &sample_id_all))
681 return NULL;
682
aece948f 683 event = perf_evlist__mmap_read(evlist, cpu);
877108e4
ACM		 684 if (event != NULL) {
685 struct perf_evsel *first;
686 PyObject *pyevent = pyrf_event__new(event);
687 struct pyrf_event *pevent = (struct pyrf_event *)pyevent;
688
689 if (pyevent == NULL)
690 return PyErr_NoMemory();
691
692 first = list_entry(evlist->entries.next, struct perf_evsel, node);
693 perf_event__parse_sample(event, first->attr.sample_type, sample_id_all,
694 &pevent->sample);
695 return pyevent;
696 }
697
698 Py_INCREF(Py_None);
699 return Py_None;
700}
701
702static PyMethodDef pyrf_evlist__methods[] = {
703 {
704 .ml_name = "mmap",
705 .ml_meth = (PyCFunction)pyrf_evlist__mmap,
706 .ml_flags = METH_VARARGS | METH_KEYWORDS,
707 .ml_doc = PyDoc_STR("mmap the file descriptor table.")
708 },
709 {
710 .ml_name = "poll",
711 .ml_meth = (PyCFunction)pyrf_evlist__poll,
712 .ml_flags = METH_VARARGS | METH_KEYWORDS,
713 .ml_doc = PyDoc_STR("poll the file descriptor table.")
714 },
715 {
716 .ml_name = "get_pollfd",
717 .ml_meth = (PyCFunction)pyrf_evlist__get_pollfd,
718 .ml_flags = METH_VARARGS | METH_KEYWORDS,
719 .ml_doc = PyDoc_STR("get the poll file descriptor table.")
720 },
721 {
722 .ml_name = "add",
723 .ml_meth = (PyCFunction)pyrf_evlist__add,
724 .ml_flags = METH_VARARGS | METH_KEYWORDS,
725 .ml_doc = PyDoc_STR("adds an event selector to the list.")
726 },
727 {
728 .ml_name = "read_on_cpu",
729 .ml_meth = (PyCFunction)pyrf_evlist__read_on_cpu,
730 .ml_flags = METH_VARARGS | METH_KEYWORDS,
731 .ml_doc = PyDoc_STR("reads an event.")
732 },
f6bbc1da 733 { .ml_name = NULL, }
877108e4
ACM		 734};
735
736static Py_ssize_t pyrf_evlist__length(PyObject *obj)
737{
738 struct pyrf_evlist *pevlist = (void *)obj;
739
740 return pevlist->evlist.nr_entries;
741}
742
743static PyObject *pyrf_evlist__item(PyObject *obj, Py_ssize_t i)
744{
745 struct pyrf_evlist *pevlist = (void *)obj;
746 struct perf_evsel *pos;
747
748 if (i >= pevlist->evlist.nr_entries)
749 return NULL;
750
751 list_for_each_entry(pos, &pevlist->evlist.entries, node)
752 if (i-- == 0)
753 break;
754
755 return Py_BuildValue("O", container_of(pos, struct pyrf_evsel, evsel));
756}
757
758static PySequenceMethods pyrf_evlist__sequence_methods = {
759 .sq_length = pyrf_evlist__length,
760 .sq_item = pyrf_evlist__item,
761};
762
763static char pyrf_evlist__doc[] = PyDoc_STR("perf event selector list object.");
764
765static PyTypeObject pyrf_evlist__type = {
766 PyVarObject_HEAD_INIT(NULL, 0)
767 .tp_name = "perf.evlist",
768 .tp_basicsize = sizeof(struct pyrf_evlist),
769 .tp_dealloc = (destructor)pyrf_evlist__delete,
770 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
771 .tp_as_sequence = &pyrf_evlist__sequence_methods,
772 .tp_doc = pyrf_evlist__doc,
773 .tp_methods = pyrf_evlist__methods,
774 .tp_init = (initproc)pyrf_evlist__init,
775};
776
777static int pyrf_evlist__setup_types(void)
778{
779 pyrf_evlist__type.tp_new = PyType_GenericNew;
780 return PyType_Ready(&pyrf_evlist__type);
781}
782
783static struct {
784 const char *name;
785 int value;
786} perf__constants[] = {
787 { "TYPE_HARDWARE", PERF_TYPE_HARDWARE },
788 { "TYPE_SOFTWARE", PERF_TYPE_SOFTWARE },
789 { "TYPE_TRACEPOINT", PERF_TYPE_TRACEPOINT },
790 { "TYPE_HW_CACHE", PERF_TYPE_HW_CACHE },
791 { "TYPE_RAW", PERF_TYPE_RAW },
792 { "TYPE_BREAKPOINT", PERF_TYPE_BREAKPOINT },
793
794 { "COUNT_HW_CPU_CYCLES", PERF_COUNT_HW_CPU_CYCLES },
795 { "COUNT_HW_INSTRUCTIONS", PERF_COUNT_HW_INSTRUCTIONS },
796 { "COUNT_HW_CACHE_REFERENCES", PERF_COUNT_HW_CACHE_REFERENCES },
797 { "COUNT_HW_CACHE_MISSES", PERF_COUNT_HW_CACHE_MISSES },
798 { "COUNT_HW_BRANCH_INSTRUCTIONS", PERF_COUNT_HW_BRANCH_INSTRUCTIONS },
799 { "COUNT_HW_BRANCH_MISSES", PERF_COUNT_HW_BRANCH_MISSES },
800 { "COUNT_HW_BUS_CYCLES", PERF_COUNT_HW_BUS_CYCLES },
801 { "COUNT_HW_CACHE_L1D", PERF_COUNT_HW_CACHE_L1D },
802 { "COUNT_HW_CACHE_L1I", PERF_COUNT_HW_CACHE_L1I },
803 { "COUNT_HW_CACHE_LL", PERF_COUNT_HW_CACHE_LL },
804 { "COUNT_HW_CACHE_DTLB", PERF_COUNT_HW_CACHE_DTLB },
805 { "COUNT_HW_CACHE_ITLB", PERF_COUNT_HW_CACHE_ITLB },
806 { "COUNT_HW_CACHE_BPU", PERF_COUNT_HW_CACHE_BPU },
807 { "COUNT_HW_CACHE_OP_READ", PERF_COUNT_HW_CACHE_OP_READ },
808 { "COUNT_HW_CACHE_OP_WRITE", PERF_COUNT_HW_CACHE_OP_WRITE },
809 { "COUNT_HW_CACHE_OP_PREFETCH", PERF_COUNT_HW_CACHE_OP_PREFETCH },
810 { "COUNT_HW_CACHE_RESULT_ACCESS", PERF_COUNT_HW_CACHE_RESULT_ACCESS },
811 { "COUNT_HW_CACHE_RESULT_MISS", PERF_COUNT_HW_CACHE_RESULT_MISS },
812
813 { "COUNT_SW_CPU_CLOCK", PERF_COUNT_SW_CPU_CLOCK },
814 { "COUNT_SW_TASK_CLOCK", PERF_COUNT_SW_TASK_CLOCK },
815 { "COUNT_SW_PAGE_FAULTS", PERF_COUNT_SW_PAGE_FAULTS },
816 { "COUNT_SW_CONTEXT_SWITCHES", PERF_COUNT_SW_CONTEXT_SWITCHES },
817 { "COUNT_SW_CPU_MIGRATIONS", PERF_COUNT_SW_CPU_MIGRATIONS },
818 { "COUNT_SW_PAGE_FAULTS_MIN", PERF_COUNT_SW_PAGE_FAULTS_MIN },
819 { "COUNT_SW_PAGE_FAULTS_MAJ", PERF_COUNT_SW_PAGE_FAULTS_MAJ },
820 { "COUNT_SW_ALIGNMENT_FAULTS", PERF_COUNT_SW_ALIGNMENT_FAULTS },
821 { "COUNT_SW_EMULATION_FAULTS", PERF_COUNT_SW_EMULATION_FAULTS },
822
823 { "SAMPLE_IP", PERF_SAMPLE_IP },
824 { "SAMPLE_TID", PERF_SAMPLE_TID },
825 { "SAMPLE_TIME", PERF_SAMPLE_TIME },
826 { "SAMPLE_ADDR", PERF_SAMPLE_ADDR },
827 { "SAMPLE_READ", PERF_SAMPLE_READ },
828 { "SAMPLE_CALLCHAIN", PERF_SAMPLE_CALLCHAIN },
829 { "SAMPLE_ID", PERF_SAMPLE_ID },
830 { "SAMPLE_CPU", PERF_SAMPLE_CPU },
831 { "SAMPLE_PERIOD", PERF_SAMPLE_PERIOD },
832 { "SAMPLE_STREAM_ID", PERF_SAMPLE_STREAM_ID },
833 { "SAMPLE_RAW", PERF_SAMPLE_RAW },
834
835 { "FORMAT_TOTAL_TIME_ENABLED", PERF_FORMAT_TOTAL_TIME_ENABLED },
836 { "FORMAT_TOTAL_TIME_RUNNING", PERF_FORMAT_TOTAL_TIME_RUNNING },
837 { "FORMAT_ID", PERF_FORMAT_ID },
838 { "FORMAT_GROUP", PERF_FORMAT_GROUP },
839
840 { "RECORD_MMAP", PERF_RECORD_MMAP },
841 { "RECORD_LOST", PERF_RECORD_LOST },
842 { "RECORD_COMM", PERF_RECORD_COMM },
843 { "RECORD_EXIT", PERF_RECORD_EXIT },
844 { "RECORD_THROTTLE", PERF_RECORD_THROTTLE },
845 { "RECORD_UNTHROTTLE", PERF_RECORD_UNTHROTTLE },
846 { "RECORD_FORK", PERF_RECORD_FORK },
847 { "RECORD_READ", PERF_RECORD_READ },
848 { "RECORD_SAMPLE", PERF_RECORD_SAMPLE },
f6bbc1da 849 { .name = NULL, },
877108e4
ACM		 850};
851
852static PyMethodDef perf__methods[] = {
f6bbc1da 853 { .ml_name = NULL, }
877108e4
ACM		 854};
855
856PyMODINIT_FUNC initperf(void)
857{
858 PyObject *obj;
859 int i;
860 PyObject *dict, *module = Py_InitModule("perf", perf__methods);
861
862 if (module == NULL ||
863 pyrf_event__setup_types() < 0 ||
864 pyrf_evlist__setup_types() < 0 ||
865 pyrf_evsel__setup_types() < 0 ||
866 pyrf_thread_map__setup_types() < 0 ||
867 pyrf_cpu_map__setup_types() < 0)
868 return;
869
870 Py_INCREF(&pyrf_evlist__type);
871 PyModule_AddObject(module, "evlist", (PyObject*)&pyrf_evlist__type);
872
873 Py_INCREF(&pyrf_evsel__type);
874 PyModule_AddObject(module, "evsel", (PyObject*)&pyrf_evsel__type);
875
876 Py_INCREF(&pyrf_thread_map__type);
877 PyModule_AddObject(module, "thread_map", (PyObject*)&pyrf_thread_map__type);
878
879 Py_INCREF(&pyrf_cpu_map__type);
880 PyModule_AddObject(module, "cpu_map", (PyObject*)&pyrf_cpu_map__type);
881
882 dict = PyModule_GetDict(module);
883 if (dict == NULL)
884 goto error;
885
886 for (i = 0; perf__constants[i].name != NULL; i++) {
887 obj = PyInt_FromLong(perf__constants[i].value);
888 if (obj == NULL)
889 goto error;
890 PyDict_SetItemString(dict, perf__constants[i].name, obj);
891 Py_DECREF(obj);
892 }
893
894error:
895 if (PyErr_Occurred())
896 PyErr_SetString(PyExc_ImportError, "perf: Init failed!");
897}
Linux 6.x block layer and io_uring tree(s)