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perf trace: Improve the error messages
[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
8afb4c01
AH		 11/*
12 * Support debug printing even though util/debug.c is not linked. That means
13 * implementing 'verbose' and 'eprintf'.
14 */
15int verbose;
16
17int eprintf(int level, const char *fmt, ...)
18{
19 va_list args;
20 int ret = 0;
21
22 if (verbose >= level) {
23 va_start(args, fmt);
24 ret = vfprintf(stderr, fmt, args);
25 va_end(args);
26 }
27
28 return ret;
29}
30
cfff2d90
FW		 31/* Define PyVarObject_HEAD_INIT for python 2.5 */
32#ifndef PyVarObject_HEAD_INIT
33# define PyVarObject_HEAD_INIT(type, size) PyObject_HEAD_INIT(type) size,
34#endif
35
f6bbc1da
ACM		 36PyMODINIT_FUNC initperf(void);
37
877108e4
ACM		 38#define member_def(type, member, ptype, help) \
39 { #member, ptype, \
40 offsetof(struct pyrf_event, event) + offsetof(struct type, member), \
41 0, help }
42
43#define sample_member_def(name, member, ptype, help) \
44 { #name, ptype, \
45 offsetof(struct pyrf_event, sample) + offsetof(struct perf_sample, member), \
46 0, help }
47
48struct pyrf_event {
49 PyObject_HEAD
50 struct perf_sample sample;
51 union perf_event event;
52};
53
877108e4 54#define sample_members \
f6bbc1da 55 sample_member_def(sample_ip, ip, T_ULONGLONG, "event type"), \
877108e4
ACM		 56 sample_member_def(sample_pid, pid, T_INT, "event pid"), \
57 sample_member_def(sample_tid, tid, T_INT, "event tid"), \
f6bbc1da
ACM		 58 sample_member_def(sample_time, time, T_ULONGLONG, "event timestamp"), \
59 sample_member_def(sample_addr, addr, T_ULONGLONG, "event addr"), \
60 sample_member_def(sample_id, id, T_ULONGLONG, "event id"), \
61 sample_member_def(sample_stream_id, stream_id, T_ULONGLONG, "event stream id"), \
62 sample_member_def(sample_period, period, T_ULONGLONG, "event period"), \
877108e4
ACM		 63 sample_member_def(sample_cpu, cpu, T_UINT, "event cpu"),
64
65static char pyrf_mmap_event__doc[] = PyDoc_STR("perf mmap event object.");
66
67static PyMemberDef pyrf_mmap_event__members[] = {
68 sample_members
69 member_def(perf_event_header, type, T_UINT, "event type"),
70 member_def(mmap_event, pid, T_UINT, "event pid"),
71 member_def(mmap_event, tid, T_UINT, "event tid"),
f6bbc1da
ACM		 72 member_def(mmap_event, start, T_ULONGLONG, "start of the map"),
73 member_def(mmap_event, len, T_ULONGLONG, "map length"),
74 member_def(mmap_event, pgoff, T_ULONGLONG, "page offset"),
877108e4 75 member_def(mmap_event, filename, T_STRING_INPLACE, "backing store"),
f6bbc1da 76 { .name = NULL, },
877108e4
ACM		 77};
78
79static PyObject *pyrf_mmap_event__repr(struct pyrf_event *pevent)
80{
81 PyObject *ret;
82 char *s;
83
84 if (asprintf(&s, "{ type: mmap, pid: %u, tid: %u, start: %#" PRIx64 ", "
85 "length: %#" PRIx64 ", offset: %#" PRIx64 ", "
86 "filename: %s }",
87 pevent->event.mmap.pid, pevent->event.mmap.tid,
88 pevent->event.mmap.start, pevent->event.mmap.len,
89 pevent->event.mmap.pgoff, pevent->event.mmap.filename) < 0) {
90 ret = PyErr_NoMemory();
91 } else {
92 ret = PyString_FromString(s);
93 free(s);
94 }
95 return ret;
96}
97
98static PyTypeObject pyrf_mmap_event__type = {
99 PyVarObject_HEAD_INIT(NULL, 0)
100 .tp_name = "perf.mmap_event",
101 .tp_basicsize = sizeof(struct pyrf_event),
102 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
103 .tp_doc = pyrf_mmap_event__doc,
104 .tp_members = pyrf_mmap_event__members,
105 .tp_repr = (reprfunc)pyrf_mmap_event__repr,
106};
107
108static char pyrf_task_event__doc[] = PyDoc_STR("perf task (fork/exit) event object.");
109
110static PyMemberDef pyrf_task_event__members[] = {
111 sample_members
112 member_def(perf_event_header, type, T_UINT, "event type"),
113 member_def(fork_event, pid, T_UINT, "event pid"),
114 member_def(fork_event, ppid, T_UINT, "event ppid"),
115 member_def(fork_event, tid, T_UINT, "event tid"),
116 member_def(fork_event, ptid, T_UINT, "event ptid"),
f6bbc1da
ACM		 117 member_def(fork_event, time, T_ULONGLONG, "timestamp"),
118 { .name = NULL, },
877108e4
ACM		 119};
120
121static PyObject *pyrf_task_event__repr(struct pyrf_event *pevent)
122{
123 return PyString_FromFormat("{ type: %s, pid: %u, ppid: %u, tid: %u, "
124 "ptid: %u, time: %" PRIu64 "}",
125 pevent->event.header.type == PERF_RECORD_FORK ? "fork" : "exit",
126 pevent->event.fork.pid,
127 pevent->event.fork.ppid,
128 pevent->event.fork.tid,
129 pevent->event.fork.ptid,
130 pevent->event.fork.time);
131}
132
133static PyTypeObject pyrf_task_event__type = {
134 PyVarObject_HEAD_INIT(NULL, 0)
135 .tp_name = "perf.task_event",
136 .tp_basicsize = sizeof(struct pyrf_event),
137 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
138 .tp_doc = pyrf_task_event__doc,
139 .tp_members = pyrf_task_event__members,
140 .tp_repr = (reprfunc)pyrf_task_event__repr,
141};
142
143static char pyrf_comm_event__doc[] = PyDoc_STR("perf comm event object.");
144
145static PyMemberDef pyrf_comm_event__members[] = {
146 sample_members
147 member_def(perf_event_header, type, T_UINT, "event type"),
148 member_def(comm_event, pid, T_UINT, "event pid"),
149 member_def(comm_event, tid, T_UINT, "event tid"),
150 member_def(comm_event, comm, T_STRING_INPLACE, "process name"),
f6bbc1da 151 { .name = NULL, },
877108e4
ACM		 152};
153
154static PyObject *pyrf_comm_event__repr(struct pyrf_event *pevent)
155{
156 return PyString_FromFormat("{ type: comm, pid: %u, tid: %u, comm: %s }",
157 pevent->event.comm.pid,
158 pevent->event.comm.tid,
159 pevent->event.comm.comm);
160}
161
162static PyTypeObject pyrf_comm_event__type = {
163 PyVarObject_HEAD_INIT(NULL, 0)
164 .tp_name = "perf.comm_event",
165 .tp_basicsize = sizeof(struct pyrf_event),
166 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
167 .tp_doc = pyrf_comm_event__doc,
168 .tp_members = pyrf_comm_event__members,
169 .tp_repr = (reprfunc)pyrf_comm_event__repr,
170};
171
172static char pyrf_throttle_event__doc[] = PyDoc_STR("perf throttle event object.");
173
174static PyMemberDef pyrf_throttle_event__members[] = {
175 sample_members
176 member_def(perf_event_header, type, T_UINT, "event type"),
f6bbc1da
ACM		 177 member_def(throttle_event, time, T_ULONGLONG, "timestamp"),
178 member_def(throttle_event, id, T_ULONGLONG, "event id"),
179 member_def(throttle_event, stream_id, T_ULONGLONG, "event stream id"),
180 { .name = NULL, },
877108e4
ACM		 181};
182
183static PyObject *pyrf_throttle_event__repr(struct pyrf_event *pevent)
184{
185 struct throttle_event *te = (struct throttle_event *)(&pevent->event.header + 1);
186
187 return PyString_FromFormat("{ type: %sthrottle, time: %" PRIu64 ", id: %" PRIu64
188 ", stream_id: %" PRIu64 " }",
189 pevent->event.header.type == PERF_RECORD_THROTTLE ? "" : "un",
190 te->time, te->id, te->stream_id);
191}
192
193static PyTypeObject pyrf_throttle_event__type = {
194 PyVarObject_HEAD_INIT(NULL, 0)
195 .tp_name = "perf.throttle_event",
196 .tp_basicsize = sizeof(struct pyrf_event),
197 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
198 .tp_doc = pyrf_throttle_event__doc,
199 .tp_members = pyrf_throttle_event__members,
200 .tp_repr = (reprfunc)pyrf_throttle_event__repr,
201};
202
3e9f45a7
ACM		 203static char pyrf_lost_event__doc[] = PyDoc_STR("perf lost event object.");
204
205static PyMemberDef pyrf_lost_event__members[] = {
206 sample_members
207 member_def(lost_event, id, T_ULONGLONG, "event id"),
208 member_def(lost_event, lost, T_ULONGLONG, "number of lost events"),
209 { .name = NULL, },
210};
211
212static PyObject *pyrf_lost_event__repr(struct pyrf_event *pevent)
213{
214 PyObject *ret;
215 char *s;
216
217 if (asprintf(&s, "{ type: lost, id: %#" PRIx64 ", "
218 "lost: %#" PRIx64 " }",
219 pevent->event.lost.id, pevent->event.lost.lost) < 0) {
220 ret = PyErr_NoMemory();
221 } else {
222 ret = PyString_FromString(s);
223 free(s);
224 }
225 return ret;
226}
227
228static PyTypeObject pyrf_lost_event__type = {
229 PyVarObject_HEAD_INIT(NULL, 0)
230 .tp_name = "perf.lost_event",
231 .tp_basicsize = sizeof(struct pyrf_event),
232 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
233 .tp_doc = pyrf_lost_event__doc,
234 .tp_members = pyrf_lost_event__members,
235 .tp_repr = (reprfunc)pyrf_lost_event__repr,
236};
237
238static char pyrf_read_event__doc[] = PyDoc_STR("perf read event object.");
239
240static PyMemberDef pyrf_read_event__members[] = {
241 sample_members
242 member_def(read_event, pid, T_UINT, "event pid"),
243 member_def(read_event, tid, T_UINT, "event tid"),
244 { .name = NULL, },
245};
246
247static PyObject *pyrf_read_event__repr(struct pyrf_event *pevent)
248{
249 return PyString_FromFormat("{ type: read, pid: %u, tid: %u }",
250 pevent->event.read.pid,
251 pevent->event.read.tid);
252 /*
253 * FIXME: return the array of read values,
254 * making this method useful ;-)
255 */
256}
257
258static PyTypeObject pyrf_read_event__type = {
259 PyVarObject_HEAD_INIT(NULL, 0)
260 .tp_name = "perf.read_event",
261 .tp_basicsize = sizeof(struct pyrf_event),
262 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
263 .tp_doc = pyrf_read_event__doc,
264 .tp_members = pyrf_read_event__members,
265 .tp_repr = (reprfunc)pyrf_read_event__repr,
266};
267
268static char pyrf_sample_event__doc[] = PyDoc_STR("perf sample event object.");
269
270static PyMemberDef pyrf_sample_event__members[] = {
271 sample_members
272 member_def(perf_event_header, type, T_UINT, "event type"),
273 { .name = NULL, },
274};
275
276static PyObject *pyrf_sample_event__repr(struct pyrf_event *pevent)
277{
278 PyObject *ret;
279 char *s;
280
281 if (asprintf(&s, "{ type: sample }") < 0) {
282 ret = PyErr_NoMemory();
283 } else {
284 ret = PyString_FromString(s);
285 free(s);
286 }
287 return ret;
288}
289
290static PyTypeObject pyrf_sample_event__type = {
291 PyVarObject_HEAD_INIT(NULL, 0)
292 .tp_name = "perf.sample_event",
293 .tp_basicsize = sizeof(struct pyrf_event),
294 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
295 .tp_doc = pyrf_sample_event__doc,
296 .tp_members = pyrf_sample_event__members,
297 .tp_repr = (reprfunc)pyrf_sample_event__repr,
298};
299
877108e4
ACM		 300static int pyrf_event__setup_types(void)
301{
302 int err;
303 pyrf_mmap_event__type.tp_new =
304 pyrf_task_event__type.tp_new =
305 pyrf_comm_event__type.tp_new =
3e9f45a7
ACM		 306 pyrf_lost_event__type.tp_new =
307 pyrf_read_event__type.tp_new =
308 pyrf_sample_event__type.tp_new =
877108e4
ACM		 309 pyrf_throttle_event__type.tp_new = PyType_GenericNew;
310 err = PyType_Ready(&pyrf_mmap_event__type);
3e9f45a7
ACM		 311 if (err < 0)
312 goto out;
313 err = PyType_Ready(&pyrf_lost_event__type);
877108e4
ACM		 314 if (err < 0)
315 goto out;
316 err = PyType_Ready(&pyrf_task_event__type);
317 if (err < 0)
318 goto out;
319 err = PyType_Ready(&pyrf_comm_event__type);
320 if (err < 0)
321 goto out;
322 err = PyType_Ready(&pyrf_throttle_event__type);
323 if (err < 0)
324 goto out;
3e9f45a7
ACM		 325 err = PyType_Ready(&pyrf_read_event__type);
326 if (err < 0)
327 goto out;
328 err = PyType_Ready(&pyrf_sample_event__type);
329 if (err < 0)
330 goto out;
877108e4
ACM		 331out:
332 return err;
333}
334
335static PyTypeObject *pyrf_event__type[] = {
336 [PERF_RECORD_MMAP] = &pyrf_mmap_event__type,
3e9f45a7 337 [PERF_RECORD_LOST] = &pyrf_lost_event__type,
877108e4
ACM		 338 [PERF_RECORD_COMM] = &pyrf_comm_event__type,
339 [PERF_RECORD_EXIT] = &pyrf_task_event__type,
340 [PERF_RECORD_THROTTLE] = &pyrf_throttle_event__type,
341 [PERF_RECORD_UNTHROTTLE] = &pyrf_throttle_event__type,
342 [PERF_RECORD_FORK] = &pyrf_task_event__type,
3e9f45a7
ACM		 343 [PERF_RECORD_READ] = &pyrf_read_event__type,
344 [PERF_RECORD_SAMPLE] = &pyrf_sample_event__type,
877108e4
ACM		 345};
346
347static PyObject *pyrf_event__new(union perf_event *event)
348{
349 struct pyrf_event *pevent;
350 PyTypeObject *ptype;
351
352 if (event->header.type < PERF_RECORD_MMAP ||
353 event->header.type > PERF_RECORD_SAMPLE)
354 return NULL;
355
356 ptype = pyrf_event__type[event->header.type];
357 pevent = PyObject_New(struct pyrf_event, ptype);
358 if (pevent != NULL)
359 memcpy(&pevent->event, event, event->header.size);
360 return (PyObject *)pevent;
361}
362
363struct pyrf_cpu_map {
364 PyObject_HEAD
365
366 struct cpu_map *cpus;
367};
368
369static int pyrf_cpu_map__init(struct pyrf_cpu_map *pcpus,
370 PyObject *args, PyObject *kwargs)
371{
64348153 372 static char *kwlist[] = { "cpustr", NULL };
877108e4
ACM		 373 char *cpustr = NULL;
374
375 if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|s",
376 kwlist, &cpustr))
377 return -1;
378
379 pcpus->cpus = cpu_map__new(cpustr);
380 if (pcpus->cpus == NULL)
381 return -1;
382 return 0;
383}
384
385static void pyrf_cpu_map__delete(struct pyrf_cpu_map *pcpus)
386{
387 cpu_map__delete(pcpus->cpus);
388 pcpus->ob_type->tp_free((PyObject*)pcpus);
389}
390
391static Py_ssize_t pyrf_cpu_map__length(PyObject *obj)
392{
393 struct pyrf_cpu_map *pcpus = (void *)obj;
394
395 return pcpus->cpus->nr;
396}
397
398static PyObject *pyrf_cpu_map__item(PyObject *obj, Py_ssize_t i)
399{
400 struct pyrf_cpu_map *pcpus = (void *)obj;
401
402 if (i >= pcpus->cpus->nr)
403 return NULL;
404
405 return Py_BuildValue("i", pcpus->cpus->map[i]);
406}
407
408static PySequenceMethods pyrf_cpu_map__sequence_methods = {
409 .sq_length = pyrf_cpu_map__length,
410 .sq_item = pyrf_cpu_map__item,
411};
412
413static char pyrf_cpu_map__doc[] = PyDoc_STR("cpu map object.");
414
415static PyTypeObject pyrf_cpu_map__type = {
416 PyVarObject_HEAD_INIT(NULL, 0)
417 .tp_name = "perf.cpu_map",
418 .tp_basicsize = sizeof(struct pyrf_cpu_map),
419 .tp_dealloc = (destructor)pyrf_cpu_map__delete,
420 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
421 .tp_doc = pyrf_cpu_map__doc,
422 .tp_as_sequence = &pyrf_cpu_map__sequence_methods,
423 .tp_init = (initproc)pyrf_cpu_map__init,
424};
425
426static int pyrf_cpu_map__setup_types(void)
427{
428 pyrf_cpu_map__type.tp_new = PyType_GenericNew;
429 return PyType_Ready(&pyrf_cpu_map__type);
430}
431
432struct pyrf_thread_map {
433 PyObject_HEAD
434
435 struct thread_map *threads;
436};
437
438static int pyrf_thread_map__init(struct pyrf_thread_map *pthreads,
439 PyObject *args, PyObject *kwargs)
440{
0d37aa34
ACM		 441 static char *kwlist[] = { "pid", "tid", "uid", NULL };
442 int pid = -1, tid = -1, uid = UINT_MAX;
877108e4 443
0d37aa34
ACM		 444 if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|iii",
445 kwlist, &pid, &tid, &uid))
877108e4
ACM		 446 return -1;
447
0d37aa34 448 pthreads->threads = thread_map__new(pid, tid, uid);
877108e4
ACM		 449 if (pthreads->threads == NULL)
450 return -1;
451 return 0;
452}
453
454static void pyrf_thread_map__delete(struct pyrf_thread_map *pthreads)
455{
456 thread_map__delete(pthreads->threads);
457 pthreads->ob_type->tp_free((PyObject*)pthreads);
458}
459
460static Py_ssize_t pyrf_thread_map__length(PyObject *obj)
461{
462 struct pyrf_thread_map *pthreads = (void *)obj;
463
464 return pthreads->threads->nr;
465}
466
467static PyObject *pyrf_thread_map__item(PyObject *obj, Py_ssize_t i)
468{
469 struct pyrf_thread_map *pthreads = (void *)obj;
470
471 if (i >= pthreads->threads->nr)
472 return NULL;
473
474 return Py_BuildValue("i", pthreads->threads->map[i]);
475}
476
477static PySequenceMethods pyrf_thread_map__sequence_methods = {
478 .sq_length = pyrf_thread_map__length,
479 .sq_item = pyrf_thread_map__item,
480};
481
482static char pyrf_thread_map__doc[] = PyDoc_STR("thread map object.");
483
484static PyTypeObject pyrf_thread_map__type = {
485 PyVarObject_HEAD_INIT(NULL, 0)
486 .tp_name = "perf.thread_map",
487 .tp_basicsize = sizeof(struct pyrf_thread_map),
488 .tp_dealloc = (destructor)pyrf_thread_map__delete,
489 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
490 .tp_doc = pyrf_thread_map__doc,
491 .tp_as_sequence = &pyrf_thread_map__sequence_methods,
492 .tp_init = (initproc)pyrf_thread_map__init,
493};
494
495static int pyrf_thread_map__setup_types(void)
496{
497 pyrf_thread_map__type.tp_new = PyType_GenericNew;
498 return PyType_Ready(&pyrf_thread_map__type);
499}
500
501struct pyrf_evsel {
502 PyObject_HEAD
503
504 struct perf_evsel evsel;
505};
506
507static int pyrf_evsel__init(struct pyrf_evsel *pevsel,
508 PyObject *args, PyObject *kwargs)
509{
510 struct perf_event_attr attr = {
511 .type = PERF_TYPE_HARDWARE,
512 .config = PERF_COUNT_HW_CPU_CYCLES,
513 .sample_type = PERF_SAMPLE_PERIOD | PERF_SAMPLE_TID,
514 };
515 static char *kwlist[] = {
516 "type",
517 "config",
518 "sample_freq",
519 "sample_period",
520 "sample_type",
521 "read_format",
522 "disabled",
523 "inherit",
524 "pinned",
525 "exclusive",
526 "exclude_user",
527 "exclude_kernel",
528 "exclude_hv",
529 "exclude_idle",
530 "mmap",
531 "comm",
532 "freq",
533 "inherit_stat",
534 "enable_on_exec",
535 "task",
536 "watermark",
537 "precise_ip",
538 "mmap_data",
539 "sample_id_all",
540 "wakeup_events",
541 "bp_type",
542 "bp_addr",
64348153
FW		 543 "bp_len",
544 NULL
545 };
877108e4
ACM		 546 u64 sample_period = 0;
547 u32 disabled = 0,
548 inherit = 0,
549 pinned = 0,
550 exclusive = 0,
551 exclude_user = 0,
552 exclude_kernel = 0,
553 exclude_hv = 0,
554 exclude_idle = 0,
555 mmap = 0,
556 comm = 0,
557 freq = 1,
558 inherit_stat = 0,
559 enable_on_exec = 0,
560 task = 0,
561 watermark = 0,
562 precise_ip = 0,
563 mmap_data = 0,
564 sample_id_all = 1;
565 int idx = 0;
566
567 if (!PyArg_ParseTupleAndKeywords(args, kwargs,
568 "|iKiKKiiiiiiiiiiiiiiiiiiiiiKK", kwlist,
569 &attr.type, &attr.config, &attr.sample_freq,
570 &sample_period, &attr.sample_type,
571 &attr.read_format, &disabled, &inherit,
572 &pinned, &exclusive, &exclude_user,
573 &exclude_kernel, &exclude_hv, &exclude_idle,
574 &mmap, &comm, &freq, &inherit_stat,
575 &enable_on_exec, &task, &watermark,
576 &precise_ip, &mmap_data, &sample_id_all,
577 &attr.wakeup_events, &attr.bp_type,
578 &attr.bp_addr, &attr.bp_len, &idx))
579 return -1;
580
581 /* union... */
582 if (sample_period != 0) {
583 if (attr.sample_freq != 0)
584 return -1; /* FIXME: throw right exception */
585 attr.sample_period = sample_period;
586 }
587
588 /* Bitfields */
589 attr.disabled = disabled;
590 attr.inherit = inherit;
591 attr.pinned = pinned;
592 attr.exclusive = exclusive;
593 attr.exclude_user = exclude_user;
594 attr.exclude_kernel = exclude_kernel;
595 attr.exclude_hv = exclude_hv;
596 attr.exclude_idle = exclude_idle;
597 attr.mmap = mmap;
598 attr.comm = comm;
599 attr.freq = freq;
600 attr.inherit_stat = inherit_stat;
601 attr.enable_on_exec = enable_on_exec;
602 attr.task = task;
603 attr.watermark = watermark;
604 attr.precise_ip = precise_ip;
605 attr.mmap_data = mmap_data;
606 attr.sample_id_all = sample_id_all;
607
608 perf_evsel__init(&pevsel->evsel, &attr, idx);
609 return 0;
610}
611
612static void pyrf_evsel__delete(struct pyrf_evsel *pevsel)
613{
614 perf_evsel__exit(&pevsel->evsel);
615 pevsel->ob_type->tp_free((PyObject*)pevsel);
616}
617
618static PyObject *pyrf_evsel__open(struct pyrf_evsel *pevsel,
619 PyObject *args, PyObject *kwargs)
620{
621 struct perf_evsel *evsel = &pevsel->evsel;
622 struct cpu_map *cpus = NULL;
623 struct thread_map *threads = NULL;
624 PyObject *pcpus = NULL, *pthreads = NULL;
5d2cd909 625 int group = 0, inherit = 0;
64348153 626 static char *kwlist[] = { "cpus", "threads", "group", "inherit", NULL };
877108e4
ACM		 627
628 if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|OOii", kwlist,
5d2cd909 629 &pcpus, &pthreads, &group, &inherit))
877108e4
ACM		 630 return NULL;
631
632 if (pthreads != NULL)
633 threads = ((struct pyrf_thread_map *)pthreads)->threads;
634
635 if (pcpus != NULL)
636 cpus = ((struct pyrf_cpu_map *)pcpus)->cpus;
637
5d2cd909 638 evsel->attr.inherit = inherit;
727ab04e
ACM		 639 /*
640 * This will group just the fds for this single evsel, to group
641 * multiple events, use evlist.open().
642 */
6a4bb04c 643 if (perf_evsel__open(evsel, cpus, threads) < 0) {
877108e4
ACM		 644 PyErr_SetFromErrno(PyExc_OSError);
645 return NULL;
646 }
647
648 Py_INCREF(Py_None);
649 return Py_None;
650}
651
652static PyMethodDef pyrf_evsel__methods[] = {
653 {
654 .ml_name = "open",
655 .ml_meth = (PyCFunction)pyrf_evsel__open,
656 .ml_flags = METH_VARARGS | METH_KEYWORDS,
657 .ml_doc = PyDoc_STR("open the event selector file descriptor table.")
658 },
f6bbc1da 659 { .ml_name = NULL, }
877108e4
ACM		 660};
661
662static char pyrf_evsel__doc[] = PyDoc_STR("perf event selector list object.");
663
664static PyTypeObject pyrf_evsel__type = {
665 PyVarObject_HEAD_INIT(NULL, 0)
666 .tp_name = "perf.evsel",
667 .tp_basicsize = sizeof(struct pyrf_evsel),
668 .tp_dealloc = (destructor)pyrf_evsel__delete,
669 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
670 .tp_doc = pyrf_evsel__doc,
671 .tp_methods = pyrf_evsel__methods,
672 .tp_init = (initproc)pyrf_evsel__init,
673};
674
675static int pyrf_evsel__setup_types(void)
676{
677 pyrf_evsel__type.tp_new = PyType_GenericNew;
678 return PyType_Ready(&pyrf_evsel__type);
679}
680
681struct pyrf_evlist {
682 PyObject_HEAD
683
684 struct perf_evlist evlist;
685};
686
687static int pyrf_evlist__init(struct pyrf_evlist *pevlist,
1d037ca1 688 PyObject *args, PyObject *kwargs __maybe_unused)
877108e4 689{
7e2ed097
ACM		 690 PyObject *pcpus = NULL, *pthreads = NULL;
691 struct cpu_map *cpus;
692 struct thread_map *threads;
693
694 if (!PyArg_ParseTuple(args, "OO", &pcpus, &pthreads))
695 return -1;
696
697 threads = ((struct pyrf_thread_map *)pthreads)->threads;
698 cpus = ((struct pyrf_cpu_map *)pcpus)->cpus;
699 perf_evlist__init(&pevlist->evlist, cpus, threads);
877108e4
ACM		 700 return 0;
701}
702
703static void pyrf_evlist__delete(struct pyrf_evlist *pevlist)
704{
705 perf_evlist__exit(&pevlist->evlist);
706 pevlist->ob_type->tp_free((PyObject*)pevlist);
707}
708
709static PyObject *pyrf_evlist__mmap(struct pyrf_evlist *pevlist,
710 PyObject *args, PyObject *kwargs)
711{
712 struct perf_evlist *evlist = &pevlist->evlist;
64348153 713 static char *kwlist[] = { "pages", "overwrite", NULL };
877108e4
ACM		 714 int pages = 128, overwrite = false;
715
7e2ed097
ACM		 716 if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|ii", kwlist,
717 &pages, &overwrite))
877108e4
ACM		 718 return NULL;
719
7e2ed097 720 if (perf_evlist__mmap(evlist, pages, overwrite) < 0) {
877108e4
ACM		 721 PyErr_SetFromErrno(PyExc_OSError);
722 return NULL;
723 }
724
725 Py_INCREF(Py_None);
726 return Py_None;
727}
728
729static PyObject *pyrf_evlist__poll(struct pyrf_evlist *pevlist,
730 PyObject *args, PyObject *kwargs)
731{
732 struct perf_evlist *evlist = &pevlist->evlist;
64348153 733 static char *kwlist[] = { "timeout", NULL };
877108e4
ACM		 734 int timeout = -1, n;
735
736 if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|i", kwlist, &timeout))
737 return NULL;
738
739 n = poll(evlist->pollfd, evlist->nr_fds, timeout);
740 if (n < 0) {
741 PyErr_SetFromErrno(PyExc_OSError);
742 return NULL;
743 }
744
745 return Py_BuildValue("i", n);
746}
747
748static PyObject *pyrf_evlist__get_pollfd(struct pyrf_evlist *pevlist,
1d037ca1
IT		 749 PyObject *args __maybe_unused,
750 PyObject *kwargs __maybe_unused)
877108e4
ACM		 751{
752 struct perf_evlist *evlist = &pevlist->evlist;
753 PyObject *list = PyList_New(0);
754 int i;
755
756 for (i = 0; i < evlist->nr_fds; ++i) {
757 PyObject *file;
758 FILE *fp = fdopen(evlist->pollfd[i].fd, "r");
759
760 if (fp == NULL)
761 goto free_list;
762
763 file = PyFile_FromFile(fp, "perf", "r", NULL);
764 if (file == NULL)
765 goto free_list;
766
767 if (PyList_Append(list, file) != 0) {
768 Py_DECREF(file);
769 goto free_list;
770 }
771
772 Py_DECREF(file);
773 }
774
775 return list;
776free_list:
777 return PyErr_NoMemory();
778}
779
780
781static PyObject *pyrf_evlist__add(struct pyrf_evlist *pevlist,
1d037ca1
IT		 782 PyObject *args,
783 PyObject *kwargs __maybe_unused)
877108e4
ACM		 784{
785 struct perf_evlist *evlist = &pevlist->evlist;
786 PyObject *pevsel;
787 struct perf_evsel *evsel;
788
789 if (!PyArg_ParseTuple(args, "O", &pevsel))
790 return NULL;
791
792 Py_INCREF(pevsel);
793 evsel = &((struct pyrf_evsel *)pevsel)->evsel;
794 evsel->idx = evlist->nr_entries;
795 perf_evlist__add(evlist, evsel);
796
797 return Py_BuildValue("i", evlist->nr_entries);
798}
799
800static PyObject *pyrf_evlist__read_on_cpu(struct pyrf_evlist *pevlist,
801 PyObject *args, PyObject *kwargs)
802{
803 struct perf_evlist *evlist = &pevlist->evlist;
804 union perf_event *event;
805 int sample_id_all = 1, cpu;
64348153 806 static char *kwlist[] = { "cpu", "sample_id_all", NULL };
5538beca 807 int err;
877108e4
ACM		 808
809 if (!PyArg_ParseTupleAndKeywords(args, kwargs, "i|i", kwlist,
810 &cpu, &sample_id_all))
811 return NULL;
812
aece948f 813 event = perf_evlist__mmap_read(evlist, cpu);
877108e4 814 if (event != NULL) {
877108e4
ACM		 815 PyObject *pyevent = pyrf_event__new(event);
816 struct pyrf_event *pevent = (struct pyrf_event *)pyevent;
817
818 if (pyevent == NULL)
819 return PyErr_NoMemory();
820
0807d2d8 821 err = perf_evlist__parse_sample(evlist, event, &pevent->sample);
5c6970af
ACM		 822 if (err)
823 return PyErr_Format(PyExc_OSError,
824 "perf: can't parse sample, err=%d", err);
877108e4
ACM		 825 return pyevent;
826 }
5c6970af 827
877108e4
ACM		 828 Py_INCREF(Py_None);
829 return Py_None;
830}
831
727ab04e
ACM		 832static PyObject *pyrf_evlist__open(struct pyrf_evlist *pevlist,
833 PyObject *args, PyObject *kwargs)
834{
835 struct perf_evlist *evlist = &pevlist->evlist;
836 int group = 0;
837 static char *kwlist[] = { "group", NULL };
838
839 if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|OOii", kwlist, &group))
840 return NULL;
841
6a4bb04c 842 if (group)
63dab225 843 perf_evlist__set_leader(evlist);
6a4bb04c
JO		 844
845 if (perf_evlist__open(evlist) < 0) {
727ab04e
ACM		 846 PyErr_SetFromErrno(PyExc_OSError);
847 return NULL;
848 }
849
850 Py_INCREF(Py_None);
851 return Py_None;
852}
853
877108e4
ACM		 854static PyMethodDef pyrf_evlist__methods[] = {
855 {
856 .ml_name = "mmap",
857 .ml_meth = (PyCFunction)pyrf_evlist__mmap,
858 .ml_flags = METH_VARARGS | METH_KEYWORDS,
859 .ml_doc = PyDoc_STR("mmap the file descriptor table.")
860 },
727ab04e
ACM		 861 {
862 .ml_name = "open",
863 .ml_meth = (PyCFunction)pyrf_evlist__open,
864 .ml_flags = METH_VARARGS | METH_KEYWORDS,
865 .ml_doc = PyDoc_STR("open the file descriptors.")
866 },
877108e4
ACM		 867 {
868 .ml_name = "poll",
869 .ml_meth = (PyCFunction)pyrf_evlist__poll,
870 .ml_flags = METH_VARARGS | METH_KEYWORDS,
871 .ml_doc = PyDoc_STR("poll the file descriptor table.")
872 },
873 {
874 .ml_name = "get_pollfd",
875 .ml_meth = (PyCFunction)pyrf_evlist__get_pollfd,
876 .ml_flags = METH_VARARGS | METH_KEYWORDS,
877 .ml_doc = PyDoc_STR("get the poll file descriptor table.")
878 },
879 {
880 .ml_name = "add",
881 .ml_meth = (PyCFunction)pyrf_evlist__add,
882 .ml_flags = METH_VARARGS | METH_KEYWORDS,
883 .ml_doc = PyDoc_STR("adds an event selector to the list.")
884 },
885 {
886 .ml_name = "read_on_cpu",
887 .ml_meth = (PyCFunction)pyrf_evlist__read_on_cpu,
888 .ml_flags = METH_VARARGS | METH_KEYWORDS,
889 .ml_doc = PyDoc_STR("reads an event.")
890 },
f6bbc1da 891 { .ml_name = NULL, }
877108e4
ACM		 892};
893
894static Py_ssize_t pyrf_evlist__length(PyObject *obj)
895{
896 struct pyrf_evlist *pevlist = (void *)obj;
897
898 return pevlist->evlist.nr_entries;
899}
900
901static PyObject *pyrf_evlist__item(PyObject *obj, Py_ssize_t i)
902{
903 struct pyrf_evlist *pevlist = (void *)obj;
904 struct perf_evsel *pos;
905
906 if (i >= pevlist->evlist.nr_entries)
907 return NULL;
908
909 list_for_each_entry(pos, &pevlist->evlist.entries, node)
910 if (i-- == 0)
911 break;
912
913 return Py_BuildValue("O", container_of(pos, struct pyrf_evsel, evsel));
914}
915
916static PySequenceMethods pyrf_evlist__sequence_methods = {
917 .sq_length = pyrf_evlist__length,
918 .sq_item = pyrf_evlist__item,
919};
920
921static char pyrf_evlist__doc[] = PyDoc_STR("perf event selector list object.");
922
923static PyTypeObject pyrf_evlist__type = {
924 PyVarObject_HEAD_INIT(NULL, 0)
925 .tp_name = "perf.evlist",
926 .tp_basicsize = sizeof(struct pyrf_evlist),
927 .tp_dealloc = (destructor)pyrf_evlist__delete,
928 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
929 .tp_as_sequence = &pyrf_evlist__sequence_methods,
930 .tp_doc = pyrf_evlist__doc,
931 .tp_methods = pyrf_evlist__methods,
932 .tp_init = (initproc)pyrf_evlist__init,
933};
934
935static int pyrf_evlist__setup_types(void)
936{
937 pyrf_evlist__type.tp_new = PyType_GenericNew;
938 return PyType_Ready(&pyrf_evlist__type);
939}
940
941static struct {
942 const char *name;
943 int value;
944} perf__constants[] = {
945 { "TYPE_HARDWARE", PERF_TYPE_HARDWARE },
946 { "TYPE_SOFTWARE", PERF_TYPE_SOFTWARE },
947 { "TYPE_TRACEPOINT", PERF_TYPE_TRACEPOINT },
948 { "TYPE_HW_CACHE", PERF_TYPE_HW_CACHE },
949 { "TYPE_RAW", PERF_TYPE_RAW },
950 { "TYPE_BREAKPOINT", PERF_TYPE_BREAKPOINT },
951
952 { "COUNT_HW_CPU_CYCLES", PERF_COUNT_HW_CPU_CYCLES },
953 { "COUNT_HW_INSTRUCTIONS", PERF_COUNT_HW_INSTRUCTIONS },
954 { "COUNT_HW_CACHE_REFERENCES", PERF_COUNT_HW_CACHE_REFERENCES },
955 { "COUNT_HW_CACHE_MISSES", PERF_COUNT_HW_CACHE_MISSES },
956 { "COUNT_HW_BRANCH_INSTRUCTIONS", PERF_COUNT_HW_BRANCH_INSTRUCTIONS },
957 { "COUNT_HW_BRANCH_MISSES", PERF_COUNT_HW_BRANCH_MISSES },
958 { "COUNT_HW_BUS_CYCLES", PERF_COUNT_HW_BUS_CYCLES },
959 { "COUNT_HW_CACHE_L1D", PERF_COUNT_HW_CACHE_L1D },
960 { "COUNT_HW_CACHE_L1I", PERF_COUNT_HW_CACHE_L1I },
961 { "COUNT_HW_CACHE_LL", PERF_COUNT_HW_CACHE_LL },
962 { "COUNT_HW_CACHE_DTLB", PERF_COUNT_HW_CACHE_DTLB },
963 { "COUNT_HW_CACHE_ITLB", PERF_COUNT_HW_CACHE_ITLB },
964 { "COUNT_HW_CACHE_BPU", PERF_COUNT_HW_CACHE_BPU },
965 { "COUNT_HW_CACHE_OP_READ", PERF_COUNT_HW_CACHE_OP_READ },
966 { "COUNT_HW_CACHE_OP_WRITE", PERF_COUNT_HW_CACHE_OP_WRITE },
967 { "COUNT_HW_CACHE_OP_PREFETCH", PERF_COUNT_HW_CACHE_OP_PREFETCH },
968 { "COUNT_HW_CACHE_RESULT_ACCESS", PERF_COUNT_HW_CACHE_RESULT_ACCESS },
969 { "COUNT_HW_CACHE_RESULT_MISS", PERF_COUNT_HW_CACHE_RESULT_MISS },
970
129c04cb
IM		 971 { "COUNT_HW_STALLED_CYCLES_FRONTEND", PERF_COUNT_HW_STALLED_CYCLES_FRONTEND },
972 { "COUNT_HW_STALLED_CYCLES_BACKEND", PERF_COUNT_HW_STALLED_CYCLES_BACKEND },
973
877108e4
ACM		 974 { "COUNT_SW_CPU_CLOCK", PERF_COUNT_SW_CPU_CLOCK },
975 { "COUNT_SW_TASK_CLOCK", PERF_COUNT_SW_TASK_CLOCK },
976 { "COUNT_SW_PAGE_FAULTS", PERF_COUNT_SW_PAGE_FAULTS },
977 { "COUNT_SW_CONTEXT_SWITCHES", PERF_COUNT_SW_CONTEXT_SWITCHES },
978 { "COUNT_SW_CPU_MIGRATIONS", PERF_COUNT_SW_CPU_MIGRATIONS },
979 { "COUNT_SW_PAGE_FAULTS_MIN", PERF_COUNT_SW_PAGE_FAULTS_MIN },
980 { "COUNT_SW_PAGE_FAULTS_MAJ", PERF_COUNT_SW_PAGE_FAULTS_MAJ },
981 { "COUNT_SW_ALIGNMENT_FAULTS", PERF_COUNT_SW_ALIGNMENT_FAULTS },
982 { "COUNT_SW_EMULATION_FAULTS", PERF_COUNT_SW_EMULATION_FAULTS },
d22d1a2a 983 { "COUNT_SW_DUMMY", PERF_COUNT_SW_DUMMY },
877108e4
ACM		 984
985 { "SAMPLE_IP", PERF_SAMPLE_IP },
986 { "SAMPLE_TID", PERF_SAMPLE_TID },
987 { "SAMPLE_TIME", PERF_SAMPLE_TIME },
988 { "SAMPLE_ADDR", PERF_SAMPLE_ADDR },
989 { "SAMPLE_READ", PERF_SAMPLE_READ },
990 { "SAMPLE_CALLCHAIN", PERF_SAMPLE_CALLCHAIN },
991 { "SAMPLE_ID", PERF_SAMPLE_ID },
992 { "SAMPLE_CPU", PERF_SAMPLE_CPU },
993 { "SAMPLE_PERIOD", PERF_SAMPLE_PERIOD },
994 { "SAMPLE_STREAM_ID", PERF_SAMPLE_STREAM_ID },
995 { "SAMPLE_RAW", PERF_SAMPLE_RAW },
996
997 { "FORMAT_TOTAL_TIME_ENABLED", PERF_FORMAT_TOTAL_TIME_ENABLED },
998 { "FORMAT_TOTAL_TIME_RUNNING", PERF_FORMAT_TOTAL_TIME_RUNNING },
999 { "FORMAT_ID", PERF_FORMAT_ID },
1000 { "FORMAT_GROUP", PERF_FORMAT_GROUP },
1001
1002 { "RECORD_MMAP", PERF_RECORD_MMAP },
1003 { "RECORD_LOST", PERF_RECORD_LOST },
1004 { "RECORD_COMM", PERF_RECORD_COMM },
1005 { "RECORD_EXIT", PERF_RECORD_EXIT },
1006 { "RECORD_THROTTLE", PERF_RECORD_THROTTLE },
1007 { "RECORD_UNTHROTTLE", PERF_RECORD_UNTHROTTLE },
1008 { "RECORD_FORK", PERF_RECORD_FORK },
1009 { "RECORD_READ", PERF_RECORD_READ },
1010 { "RECORD_SAMPLE", PERF_RECORD_SAMPLE },
f6bbc1da 1011 { .name = NULL, },
877108e4
ACM		 1012};
1013
1014static PyMethodDef perf__methods[] = {
f6bbc1da 1015 { .ml_name = NULL, }
877108e4
ACM		 1016};
1017
1018PyMODINIT_FUNC initperf(void)
1019{
1020 PyObject *obj;
1021 int i;
1022 PyObject *dict, *module = Py_InitModule("perf", perf__methods);
1023
1024 if (module == NULL ||
1025 pyrf_event__setup_types() < 0 ||
1026 pyrf_evlist__setup_types() < 0 ||
1027 pyrf_evsel__setup_types() < 0 ||
1028 pyrf_thread_map__setup_types() < 0 ||
1029 pyrf_cpu_map__setup_types() < 0)
1030 return;
1031
918512b4 1032 /* The page_size is placed in util object. */
0da2e9c2
ACM		 1033 page_size = sysconf(_SC_PAGE_SIZE);
1034
877108e4
ACM		 1035 Py_INCREF(&pyrf_evlist__type);
1036 PyModule_AddObject(module, "evlist", (PyObject*)&pyrf_evlist__type);
1037
1038 Py_INCREF(&pyrf_evsel__type);
1039 PyModule_AddObject(module, "evsel", (PyObject*)&pyrf_evsel__type);
1040
1041 Py_INCREF(&pyrf_thread_map__type);
1042 PyModule_AddObject(module, "thread_map", (PyObject*)&pyrf_thread_map__type);
1043
1044 Py_INCREF(&pyrf_cpu_map__type);
1045 PyModule_AddObject(module, "cpu_map", (PyObject*)&pyrf_cpu_map__type);
1046
1047 dict = PyModule_GetDict(module);
1048 if (dict == NULL)
1049 goto error;
1050
1051 for (i = 0; perf__constants[i].name != NULL; i++) {
1052 obj = PyInt_FromLong(perf__constants[i].value);
1053 if (obj == NULL)
1054 goto error;
1055 PyDict_SetItemString(dict, perf__constants[i].name, obj);
1056 Py_DECREF(obj);
1057 }
1058
1059error:
1060 if (PyErr_Occurred())
1061 PyErr_SetString(PyExc_ImportError, "perf: Init failed!");
1062}
0c6332e9
ACM		 1063
1064/*
1065 * Dummy, to avoid dragging all the test_attr infrastructure in the python
1066 * binding.
1067 */
1068void test_attr__open(struct perf_event_attr *attr, pid_t pid, int cpu,
1069 int fd, int group_fd, unsigned long flags)
1070{
1071}
Linux 6.x block layer and io_uring tree(s)