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edbe9817 JO |
1 | /* |
2 | * CTF writing support via babeltrace. | |
3 | * | |
4 | * Copyright (C) 2014, Jiri Olsa <jolsa@redhat.com> | |
5 | * Copyright (C) 2014, Sebastian Andrzej Siewior <bigeasy@linutronix.de> | |
6 | * | |
7 | * Released under the GPL v2. (and only v2, not any later version) | |
8 | */ | |
9 | ||
10 | #include <linux/compiler.h> | |
11 | #include <babeltrace/ctf-writer/writer.h> | |
12 | #include <babeltrace/ctf-writer/clock.h> | |
13 | #include <babeltrace/ctf-writer/stream.h> | |
14 | #include <babeltrace/ctf-writer/event.h> | |
15 | #include <babeltrace/ctf-writer/event-types.h> | |
16 | #include <babeltrace/ctf-writer/event-fields.h> | |
e0a7cce5 | 17 | #include <babeltrace/ctf-ir/utils.h> |
edbe9817 JO |
18 | #include <babeltrace/ctf/events.h> |
19 | #include <traceevent/event-parse.h> | |
20 | #include "asm/bug.h" | |
21 | #include "data-convert-bt.h" | |
22 | #include "session.h" | |
23 | #include "util.h" | |
24 | #include "debug.h" | |
25 | #include "tool.h" | |
26 | #include "evlist.h" | |
27 | #include "evsel.h" | |
28 | #include "machine.h" | |
29 | ||
30 | #define pr_N(n, fmt, ...) \ | |
31 | eprintf(n, debug_data_convert, fmt, ##__VA_ARGS__) | |
32 | ||
33 | #define pr(fmt, ...) pr_N(1, pr_fmt(fmt), ##__VA_ARGS__) | |
34 | #define pr2(fmt, ...) pr_N(2, pr_fmt(fmt), ##__VA_ARGS__) | |
35 | ||
36 | #define pr_time2(t, fmt, ...) pr_time_N(2, debug_data_convert, t, pr_fmt(fmt), ##__VA_ARGS__) | |
37 | ||
38 | struct evsel_priv { | |
39 | struct bt_ctf_event_class *event_class; | |
40 | }; | |
41 | ||
90e129ff SAS |
42 | #define MAX_CPUS 4096 |
43 | ||
44 | struct ctf_stream { | |
45 | struct bt_ctf_stream *stream; | |
46 | int cpu; | |
89e5fa88 | 47 | u32 count; |
90e129ff SAS |
48 | }; |
49 | ||
edbe9817 JO |
50 | struct ctf_writer { |
51 | /* writer primitives */ | |
90e129ff SAS |
52 | struct bt_ctf_writer *writer; |
53 | struct ctf_stream **stream; | |
54 | int stream_cnt; | |
55 | struct bt_ctf_stream_class *stream_class; | |
56 | struct bt_ctf_clock *clock; | |
edbe9817 JO |
57 | |
58 | /* data types */ | |
59 | union { | |
60 | struct { | |
61 | struct bt_ctf_field_type *s64; | |
62 | struct bt_ctf_field_type *u64; | |
63 | struct bt_ctf_field_type *s32; | |
64 | struct bt_ctf_field_type *u32; | |
65 | struct bt_ctf_field_type *string; | |
26812d46 | 66 | struct bt_ctf_field_type *u32_hex; |
edbe9817 JO |
67 | struct bt_ctf_field_type *u64_hex; |
68 | }; | |
69 | struct bt_ctf_field_type *array[6]; | |
70 | } data; | |
71 | }; | |
72 | ||
73 | struct convert { | |
74 | struct perf_tool tool; | |
75 | struct ctf_writer writer; | |
76 | ||
77 | u64 events_size; | |
78 | u64 events_count; | |
8fa46753 JO |
79 | |
80 | /* Ordered events configured queue size. */ | |
81 | u64 queue_size; | |
edbe9817 JO |
82 | }; |
83 | ||
84 | static int value_set(struct bt_ctf_field_type *type, | |
85 | struct bt_ctf_event *event, | |
86 | const char *name, u64 val) | |
87 | { | |
88 | struct bt_ctf_field *field; | |
89 | bool sign = bt_ctf_field_type_integer_get_signed(type); | |
90 | int ret; | |
91 | ||
92 | field = bt_ctf_field_create(type); | |
93 | if (!field) { | |
94 | pr_err("failed to create a field %s\n", name); | |
95 | return -1; | |
96 | } | |
97 | ||
98 | if (sign) { | |
99 | ret = bt_ctf_field_signed_integer_set_value(field, val); | |
100 | if (ret) { | |
101 | pr_err("failed to set field value %s\n", name); | |
102 | goto err; | |
103 | } | |
104 | } else { | |
105 | ret = bt_ctf_field_unsigned_integer_set_value(field, val); | |
106 | if (ret) { | |
107 | pr_err("failed to set field value %s\n", name); | |
108 | goto err; | |
109 | } | |
110 | } | |
111 | ||
112 | ret = bt_ctf_event_set_payload(event, name, field); | |
113 | if (ret) { | |
114 | pr_err("failed to set payload %s\n", name); | |
115 | goto err; | |
116 | } | |
117 | ||
118 | pr2(" SET [%s = %" PRIu64 "]\n", name, val); | |
119 | ||
120 | err: | |
121 | bt_ctf_field_put(field); | |
122 | return ret; | |
123 | } | |
124 | ||
125 | #define __FUNC_VALUE_SET(_name, _val_type) \ | |
126 | static __maybe_unused int value_set_##_name(struct ctf_writer *cw, \ | |
127 | struct bt_ctf_event *event, \ | |
128 | const char *name, \ | |
129 | _val_type val) \ | |
130 | { \ | |
131 | struct bt_ctf_field_type *type = cw->data._name; \ | |
132 | return value_set(type, event, name, (u64) val); \ | |
133 | } | |
134 | ||
135 | #define FUNC_VALUE_SET(_name) __FUNC_VALUE_SET(_name, _name) | |
136 | ||
137 | FUNC_VALUE_SET(s32) | |
138 | FUNC_VALUE_SET(u32) | |
139 | FUNC_VALUE_SET(s64) | |
140 | FUNC_VALUE_SET(u64) | |
141 | __FUNC_VALUE_SET(u64_hex, u64) | |
142 | ||
69364727 SAS |
143 | static struct bt_ctf_field_type* |
144 | get_tracepoint_field_type(struct ctf_writer *cw, struct format_field *field) | |
145 | { | |
146 | unsigned long flags = field->flags; | |
147 | ||
148 | if (flags & FIELD_IS_STRING) | |
149 | return cw->data.string; | |
150 | ||
151 | if (!(flags & FIELD_IS_SIGNED)) { | |
152 | /* unsigned long are mostly pointers */ | |
153 | if (flags & FIELD_IS_LONG || flags & FIELD_IS_POINTER) | |
154 | return cw->data.u64_hex; | |
155 | } | |
156 | ||
157 | if (flags & FIELD_IS_SIGNED) { | |
158 | if (field->size == 8) | |
159 | return cw->data.s64; | |
160 | else | |
161 | return cw->data.s32; | |
162 | } | |
163 | ||
164 | if (field->size == 8) | |
165 | return cw->data.u64; | |
166 | else | |
167 | return cw->data.u32; | |
168 | } | |
169 | ||
d4ae4213 WN |
170 | static unsigned long long adjust_signedness(unsigned long long value_int, int size) |
171 | { | |
172 | unsigned long long value_mask; | |
173 | ||
174 | /* | |
175 | * value_mask = (1 << (size * 8 - 1)) - 1. | |
176 | * Directly set value_mask for code readers. | |
177 | */ | |
178 | switch (size) { | |
179 | case 1: | |
180 | value_mask = 0x7fULL; | |
181 | break; | |
182 | case 2: | |
183 | value_mask = 0x7fffULL; | |
184 | break; | |
185 | case 4: | |
186 | value_mask = 0x7fffffffULL; | |
187 | break; | |
188 | case 8: | |
189 | /* | |
190 | * For 64 bit value, return it self. There is no need | |
191 | * to fill high bit. | |
192 | */ | |
193 | /* Fall through */ | |
194 | default: | |
195 | /* BUG! */ | |
196 | return value_int; | |
197 | } | |
198 | ||
199 | /* If it is a positive value, don't adjust. */ | |
200 | if ((value_int & (~0ULL - value_mask)) == 0) | |
201 | return value_int; | |
202 | ||
203 | /* Fill upper part of value_int with 1 to make it a negative long long. */ | |
204 | return (value_int & value_mask) | ~value_mask; | |
205 | } | |
206 | ||
69364727 SAS |
207 | static int add_tracepoint_field_value(struct ctf_writer *cw, |
208 | struct bt_ctf_event_class *event_class, | |
209 | struct bt_ctf_event *event, | |
210 | struct perf_sample *sample, | |
211 | struct format_field *fmtf) | |
212 | { | |
213 | struct bt_ctf_field_type *type; | |
214 | struct bt_ctf_field *array_field; | |
215 | struct bt_ctf_field *field; | |
216 | const char *name = fmtf->name; | |
217 | void *data = sample->raw_data; | |
69364727 SAS |
218 | unsigned long flags = fmtf->flags; |
219 | unsigned int n_items; | |
220 | unsigned int i; | |
221 | unsigned int offset; | |
222 | unsigned int len; | |
223 | int ret; | |
224 | ||
e0a7cce5 | 225 | name = fmtf->alias; |
69364727 SAS |
226 | offset = fmtf->offset; |
227 | len = fmtf->size; | |
228 | if (flags & FIELD_IS_STRING) | |
229 | flags &= ~FIELD_IS_ARRAY; | |
230 | ||
231 | if (flags & FIELD_IS_DYNAMIC) { | |
232 | unsigned long long tmp_val; | |
233 | ||
234 | tmp_val = pevent_read_number(fmtf->event->pevent, | |
235 | data + offset, len); | |
236 | offset = tmp_val; | |
237 | len = offset >> 16; | |
238 | offset &= 0xffff; | |
239 | } | |
240 | ||
241 | if (flags & FIELD_IS_ARRAY) { | |
242 | ||
243 | type = bt_ctf_event_class_get_field_by_name( | |
244 | event_class, name); | |
245 | array_field = bt_ctf_field_create(type); | |
246 | bt_ctf_field_type_put(type); | |
247 | if (!array_field) { | |
248 | pr_err("Failed to create array type %s\n", name); | |
249 | return -1; | |
250 | } | |
251 | ||
252 | len = fmtf->size / fmtf->arraylen; | |
253 | n_items = fmtf->arraylen; | |
254 | } else { | |
255 | n_items = 1; | |
256 | array_field = NULL; | |
257 | } | |
258 | ||
259 | type = get_tracepoint_field_type(cw, fmtf); | |
260 | ||
261 | for (i = 0; i < n_items; i++) { | |
69364727 SAS |
262 | if (flags & FIELD_IS_ARRAY) |
263 | field = bt_ctf_field_array_get_field(array_field, i); | |
264 | else | |
265 | field = bt_ctf_field_create(type); | |
266 | ||
267 | if (!field) { | |
268 | pr_err("failed to create a field %s\n", name); | |
269 | return -1; | |
270 | } | |
271 | ||
272 | if (flags & FIELD_IS_STRING) | |
273 | ret = bt_ctf_field_string_set_value(field, | |
274 | data + offset + i * len); | |
d4ae4213 WN |
275 | else { |
276 | unsigned long long value_int; | |
277 | ||
278 | value_int = pevent_read_number( | |
279 | fmtf->event->pevent, | |
280 | data + offset + i * len, len); | |
281 | ||
282 | if (!(flags & FIELD_IS_SIGNED)) | |
283 | ret = bt_ctf_field_unsigned_integer_set_value( | |
284 | field, value_int); | |
285 | else | |
286 | ret = bt_ctf_field_signed_integer_set_value( | |
287 | field, adjust_signedness(value_int, len)); | |
288 | } | |
289 | ||
69364727 SAS |
290 | if (ret) { |
291 | pr_err("failed to set file value %s\n", name); | |
292 | goto err_put_field; | |
293 | } | |
294 | if (!(flags & FIELD_IS_ARRAY)) { | |
295 | ret = bt_ctf_event_set_payload(event, name, field); | |
296 | if (ret) { | |
297 | pr_err("failed to set payload %s\n", name); | |
298 | goto err_put_field; | |
299 | } | |
300 | } | |
301 | bt_ctf_field_put(field); | |
302 | } | |
303 | if (flags & FIELD_IS_ARRAY) { | |
304 | ret = bt_ctf_event_set_payload(event, name, array_field); | |
305 | if (ret) { | |
306 | pr_err("Failed add payload array %s\n", name); | |
307 | return -1; | |
308 | } | |
309 | bt_ctf_field_put(array_field); | |
310 | } | |
311 | return 0; | |
312 | ||
313 | err_put_field: | |
314 | bt_ctf_field_put(field); | |
315 | return -1; | |
316 | } | |
317 | ||
318 | static int add_tracepoint_fields_values(struct ctf_writer *cw, | |
319 | struct bt_ctf_event_class *event_class, | |
320 | struct bt_ctf_event *event, | |
321 | struct format_field *fields, | |
322 | struct perf_sample *sample) | |
323 | { | |
324 | struct format_field *field; | |
325 | int ret; | |
326 | ||
327 | for (field = fields; field; field = field->next) { | |
328 | ret = add_tracepoint_field_value(cw, event_class, event, sample, | |
329 | field); | |
330 | if (ret) | |
331 | return -1; | |
332 | } | |
333 | return 0; | |
334 | } | |
335 | ||
336 | static int add_tracepoint_values(struct ctf_writer *cw, | |
337 | struct bt_ctf_event_class *event_class, | |
338 | struct bt_ctf_event *event, | |
339 | struct perf_evsel *evsel, | |
340 | struct perf_sample *sample) | |
341 | { | |
342 | struct format_field *common_fields = evsel->tp_format->format.common_fields; | |
343 | struct format_field *fields = evsel->tp_format->format.fields; | |
344 | int ret; | |
345 | ||
346 | ret = add_tracepoint_fields_values(cw, event_class, event, | |
347 | common_fields, sample); | |
348 | if (!ret) | |
349 | ret = add_tracepoint_fields_values(cw, event_class, event, | |
350 | fields, sample); | |
351 | ||
352 | return ret; | |
353 | } | |
354 | ||
edbe9817 JO |
355 | static int add_generic_values(struct ctf_writer *cw, |
356 | struct bt_ctf_event *event, | |
357 | struct perf_evsel *evsel, | |
358 | struct perf_sample *sample) | |
359 | { | |
360 | u64 type = evsel->attr.sample_type; | |
361 | int ret; | |
362 | ||
363 | /* | |
364 | * missing: | |
365 | * PERF_SAMPLE_TIME - not needed as we have it in | |
366 | * ctf event header | |
367 | * PERF_SAMPLE_READ - TODO | |
368 | * PERF_SAMPLE_CALLCHAIN - TODO | |
369 | * PERF_SAMPLE_RAW - tracepoint fields are handled separately | |
370 | * PERF_SAMPLE_BRANCH_STACK - TODO | |
371 | * PERF_SAMPLE_REGS_USER - TODO | |
372 | * PERF_SAMPLE_STACK_USER - TODO | |
373 | */ | |
374 | ||
375 | if (type & PERF_SAMPLE_IP) { | |
54cf776a | 376 | ret = value_set_u64_hex(cw, event, "perf_ip", sample->ip); |
edbe9817 JO |
377 | if (ret) |
378 | return -1; | |
379 | } | |
380 | ||
381 | if (type & PERF_SAMPLE_TID) { | |
54cf776a | 382 | ret = value_set_s32(cw, event, "perf_tid", sample->tid); |
edbe9817 JO |
383 | if (ret) |
384 | return -1; | |
385 | ||
54cf776a | 386 | ret = value_set_s32(cw, event, "perf_pid", sample->pid); |
edbe9817 JO |
387 | if (ret) |
388 | return -1; | |
389 | } | |
390 | ||
391 | if ((type & PERF_SAMPLE_ID) || | |
392 | (type & PERF_SAMPLE_IDENTIFIER)) { | |
54cf776a | 393 | ret = value_set_u64(cw, event, "perf_id", sample->id); |
edbe9817 JO |
394 | if (ret) |
395 | return -1; | |
396 | } | |
397 | ||
398 | if (type & PERF_SAMPLE_STREAM_ID) { | |
54cf776a | 399 | ret = value_set_u64(cw, event, "perf_stream_id", sample->stream_id); |
edbe9817 JO |
400 | if (ret) |
401 | return -1; | |
402 | } | |
403 | ||
edbe9817 | 404 | if (type & PERF_SAMPLE_PERIOD) { |
54cf776a | 405 | ret = value_set_u64(cw, event, "perf_period", sample->period); |
edbe9817 JO |
406 | if (ret) |
407 | return -1; | |
408 | } | |
409 | ||
410 | if (type & PERF_SAMPLE_WEIGHT) { | |
54cf776a | 411 | ret = value_set_u64(cw, event, "perf_weight", sample->weight); |
edbe9817 JO |
412 | if (ret) |
413 | return -1; | |
414 | } | |
415 | ||
416 | if (type & PERF_SAMPLE_DATA_SRC) { | |
54cf776a SAS |
417 | ret = value_set_u64(cw, event, "perf_data_src", |
418 | sample->data_src); | |
edbe9817 JO |
419 | if (ret) |
420 | return -1; | |
421 | } | |
422 | ||
423 | if (type & PERF_SAMPLE_TRANSACTION) { | |
54cf776a SAS |
424 | ret = value_set_u64(cw, event, "perf_transaction", |
425 | sample->transaction); | |
edbe9817 JO |
426 | if (ret) |
427 | return -1; | |
428 | } | |
429 | ||
430 | return 0; | |
431 | } | |
432 | ||
90e129ff SAS |
433 | static int ctf_stream__flush(struct ctf_stream *cs) |
434 | { | |
435 | int err = 0; | |
436 | ||
437 | if (cs) { | |
438 | err = bt_ctf_stream_flush(cs->stream); | |
439 | if (err) | |
440 | pr_err("CTF stream %d flush failed\n", cs->cpu); | |
441 | ||
89e5fa88 JO |
442 | pr("Flush stream for cpu %d (%u samples)\n", |
443 | cs->cpu, cs->count); | |
444 | ||
445 | cs->count = 0; | |
90e129ff SAS |
446 | } |
447 | ||
448 | return err; | |
449 | } | |
450 | ||
451 | static struct ctf_stream *ctf_stream__create(struct ctf_writer *cw, int cpu) | |
452 | { | |
453 | struct ctf_stream *cs; | |
454 | struct bt_ctf_field *pkt_ctx = NULL; | |
455 | struct bt_ctf_field *cpu_field = NULL; | |
456 | struct bt_ctf_stream *stream = NULL; | |
457 | int ret; | |
458 | ||
459 | cs = zalloc(sizeof(*cs)); | |
460 | if (!cs) { | |
461 | pr_err("Failed to allocate ctf stream\n"); | |
462 | return NULL; | |
463 | } | |
464 | ||
465 | stream = bt_ctf_writer_create_stream(cw->writer, cw->stream_class); | |
466 | if (!stream) { | |
467 | pr_err("Failed to create CTF stream\n"); | |
468 | goto out; | |
469 | } | |
470 | ||
471 | pkt_ctx = bt_ctf_stream_get_packet_context(stream); | |
472 | if (!pkt_ctx) { | |
473 | pr_err("Failed to obtain packet context\n"); | |
474 | goto out; | |
475 | } | |
476 | ||
477 | cpu_field = bt_ctf_field_structure_get_field(pkt_ctx, "cpu_id"); | |
478 | bt_ctf_field_put(pkt_ctx); | |
479 | if (!cpu_field) { | |
480 | pr_err("Failed to obtain cpu field\n"); | |
481 | goto out; | |
482 | } | |
483 | ||
484 | ret = bt_ctf_field_unsigned_integer_set_value(cpu_field, (u32) cpu); | |
485 | if (ret) { | |
486 | pr_err("Failed to update CPU number\n"); | |
487 | goto out; | |
488 | } | |
489 | ||
490 | bt_ctf_field_put(cpu_field); | |
491 | ||
492 | cs->cpu = cpu; | |
493 | cs->stream = stream; | |
494 | return cs; | |
495 | ||
496 | out: | |
497 | if (cpu_field) | |
498 | bt_ctf_field_put(cpu_field); | |
499 | if (stream) | |
500 | bt_ctf_stream_put(stream); | |
501 | ||
502 | free(cs); | |
503 | return NULL; | |
504 | } | |
505 | ||
506 | static void ctf_stream__delete(struct ctf_stream *cs) | |
507 | { | |
508 | if (cs) { | |
509 | bt_ctf_stream_put(cs->stream); | |
510 | free(cs); | |
511 | } | |
512 | } | |
513 | ||
514 | static struct ctf_stream *ctf_stream(struct ctf_writer *cw, int cpu) | |
515 | { | |
516 | struct ctf_stream *cs = cw->stream[cpu]; | |
517 | ||
518 | if (!cs) { | |
519 | cs = ctf_stream__create(cw, cpu); | |
520 | cw->stream[cpu] = cs; | |
521 | } | |
522 | ||
523 | return cs; | |
524 | } | |
525 | ||
526 | static int get_sample_cpu(struct ctf_writer *cw, struct perf_sample *sample, | |
527 | struct perf_evsel *evsel) | |
528 | { | |
529 | int cpu = 0; | |
530 | ||
531 | if (evsel->attr.sample_type & PERF_SAMPLE_CPU) | |
532 | cpu = sample->cpu; | |
533 | ||
534 | if (cpu > cw->stream_cnt) { | |
535 | pr_err("Event was recorded for CPU %d, limit is at %d.\n", | |
536 | cpu, cw->stream_cnt); | |
537 | cpu = 0; | |
538 | } | |
539 | ||
540 | return cpu; | |
541 | } | |
542 | ||
89e5fa88 JO |
543 | #define STREAM_FLUSH_COUNT 100000 |
544 | ||
545 | /* | |
546 | * Currently we have no other way to determine the | |
547 | * time for the stream flush other than keep track | |
548 | * of the number of events and check it against | |
549 | * threshold. | |
550 | */ | |
551 | static bool is_flush_needed(struct ctf_stream *cs) | |
552 | { | |
553 | return cs->count >= STREAM_FLUSH_COUNT; | |
554 | } | |
555 | ||
edbe9817 JO |
556 | static int process_sample_event(struct perf_tool *tool, |
557 | union perf_event *_event __maybe_unused, | |
558 | struct perf_sample *sample, | |
559 | struct perf_evsel *evsel, | |
560 | struct machine *machine __maybe_unused) | |
561 | { | |
562 | struct convert *c = container_of(tool, struct convert, tool); | |
563 | struct evsel_priv *priv = evsel->priv; | |
564 | struct ctf_writer *cw = &c->writer; | |
90e129ff | 565 | struct ctf_stream *cs; |
edbe9817 JO |
566 | struct bt_ctf_event_class *event_class; |
567 | struct bt_ctf_event *event; | |
568 | int ret; | |
569 | ||
570 | if (WARN_ONCE(!priv, "Failed to setup all events.\n")) | |
571 | return 0; | |
572 | ||
573 | event_class = priv->event_class; | |
574 | ||
575 | /* update stats */ | |
576 | c->events_count++; | |
577 | c->events_size += _event->header.size; | |
578 | ||
579 | pr_time2(sample->time, "sample %" PRIu64 "\n", c->events_count); | |
580 | ||
581 | event = bt_ctf_event_create(event_class); | |
582 | if (!event) { | |
583 | pr_err("Failed to create an CTF event\n"); | |
584 | return -1; | |
585 | } | |
586 | ||
587 | bt_ctf_clock_set_time(cw->clock, sample->time); | |
588 | ||
589 | ret = add_generic_values(cw, event, evsel, sample); | |
590 | if (ret) | |
591 | return -1; | |
592 | ||
69364727 SAS |
593 | if (evsel->attr.type == PERF_TYPE_TRACEPOINT) { |
594 | ret = add_tracepoint_values(cw, event_class, event, | |
595 | evsel, sample); | |
596 | if (ret) | |
597 | return -1; | |
598 | } | |
599 | ||
90e129ff | 600 | cs = ctf_stream(cw, get_sample_cpu(cw, sample, evsel)); |
89e5fa88 JO |
601 | if (cs) { |
602 | if (is_flush_needed(cs)) | |
603 | ctf_stream__flush(cs); | |
604 | ||
605 | cs->count++; | |
90e129ff | 606 | bt_ctf_stream_append_event(cs->stream, event); |
89e5fa88 | 607 | } |
90e129ff | 608 | |
edbe9817 | 609 | bt_ctf_event_put(event); |
90e129ff | 610 | return cs ? 0 : -1; |
edbe9817 JO |
611 | } |
612 | ||
e0a7cce5 WN |
613 | /* If dup < 0, add a prefix. Else, add _dupl_X suffix. */ |
614 | static char *change_name(char *name, char *orig_name, int dup) | |
615 | { | |
616 | char *new_name = NULL; | |
617 | size_t len; | |
618 | ||
619 | if (!name) | |
620 | name = orig_name; | |
621 | ||
622 | if (dup >= 10) | |
623 | goto out; | |
624 | /* | |
625 | * Add '_' prefix to potential keywork. According to | |
626 | * Mathieu Desnoyers (https://lkml.org/lkml/2015/1/23/652), | |
627 | * futher CTF spec updating may require us to use '$'. | |
628 | */ | |
629 | if (dup < 0) | |
630 | len = strlen(name) + sizeof("_"); | |
631 | else | |
632 | len = strlen(orig_name) + sizeof("_dupl_X"); | |
633 | ||
634 | new_name = malloc(len); | |
635 | if (!new_name) | |
636 | goto out; | |
637 | ||
638 | if (dup < 0) | |
639 | snprintf(new_name, len, "_%s", name); | |
640 | else | |
641 | snprintf(new_name, len, "%s_dupl_%d", orig_name, dup); | |
642 | ||
643 | out: | |
644 | if (name != orig_name) | |
645 | free(name); | |
646 | return new_name; | |
647 | } | |
648 | ||
649 | static int event_class_add_field(struct bt_ctf_event_class *event_class, | |
650 | struct bt_ctf_field_type *type, | |
651 | struct format_field *field) | |
652 | { | |
653 | struct bt_ctf_field_type *t = NULL; | |
654 | char *name; | |
655 | int dup = 1; | |
656 | int ret; | |
657 | ||
658 | /* alias was already assigned */ | |
659 | if (field->alias != field->name) | |
660 | return bt_ctf_event_class_add_field(event_class, type, | |
661 | (char *)field->alias); | |
662 | ||
663 | name = field->name; | |
664 | ||
665 | /* If 'name' is a keywork, add prefix. */ | |
666 | if (bt_ctf_validate_identifier(name)) | |
667 | name = change_name(name, field->name, -1); | |
668 | ||
669 | if (!name) { | |
670 | pr_err("Failed to fix invalid identifier."); | |
671 | return -1; | |
672 | } | |
673 | while ((t = bt_ctf_event_class_get_field_by_name(event_class, name))) { | |
674 | bt_ctf_field_type_put(t); | |
675 | name = change_name(name, field->name, dup++); | |
676 | if (!name) { | |
677 | pr_err("Failed to create dup name for '%s'\n", field->name); | |
678 | return -1; | |
679 | } | |
680 | } | |
681 | ||
682 | ret = bt_ctf_event_class_add_field(event_class, type, name); | |
683 | if (!ret) | |
684 | field->alias = name; | |
685 | ||
686 | return ret; | |
687 | } | |
688 | ||
69364727 SAS |
689 | static int add_tracepoint_fields_types(struct ctf_writer *cw, |
690 | struct format_field *fields, | |
691 | struct bt_ctf_event_class *event_class) | |
692 | { | |
693 | struct format_field *field; | |
694 | int ret; | |
695 | ||
696 | for (field = fields; field; field = field->next) { | |
697 | struct bt_ctf_field_type *type; | |
698 | unsigned long flags = field->flags; | |
699 | ||
700 | pr2(" field '%s'\n", field->name); | |
701 | ||
702 | type = get_tracepoint_field_type(cw, field); | |
703 | if (!type) | |
704 | return -1; | |
705 | ||
706 | /* | |
707 | * A string is an array of chars. For this we use the string | |
708 | * type and don't care that it is an array. What we don't | |
709 | * support is an array of strings. | |
710 | */ | |
711 | if (flags & FIELD_IS_STRING) | |
712 | flags &= ~FIELD_IS_ARRAY; | |
713 | ||
714 | if (flags & FIELD_IS_ARRAY) | |
715 | type = bt_ctf_field_type_array_create(type, field->arraylen); | |
716 | ||
e0a7cce5 | 717 | ret = event_class_add_field(event_class, type, field); |
69364727 SAS |
718 | |
719 | if (flags & FIELD_IS_ARRAY) | |
720 | bt_ctf_field_type_put(type); | |
721 | ||
722 | if (ret) { | |
e0a7cce5 WN |
723 | pr_err("Failed to add field '%s': %d\n", |
724 | field->name, ret); | |
69364727 SAS |
725 | return -1; |
726 | } | |
727 | } | |
728 | ||
729 | return 0; | |
730 | } | |
731 | ||
732 | static int add_tracepoint_types(struct ctf_writer *cw, | |
733 | struct perf_evsel *evsel, | |
734 | struct bt_ctf_event_class *class) | |
735 | { | |
736 | struct format_field *common_fields = evsel->tp_format->format.common_fields; | |
737 | struct format_field *fields = evsel->tp_format->format.fields; | |
738 | int ret; | |
739 | ||
740 | ret = add_tracepoint_fields_types(cw, common_fields, class); | |
741 | if (!ret) | |
742 | ret = add_tracepoint_fields_types(cw, fields, class); | |
743 | ||
744 | return ret; | |
745 | } | |
746 | ||
edbe9817 JO |
747 | static int add_generic_types(struct ctf_writer *cw, struct perf_evsel *evsel, |
748 | struct bt_ctf_event_class *event_class) | |
749 | { | |
750 | u64 type = evsel->attr.sample_type; | |
751 | ||
752 | /* | |
753 | * missing: | |
754 | * PERF_SAMPLE_TIME - not needed as we have it in | |
755 | * ctf event header | |
756 | * PERF_SAMPLE_READ - TODO | |
757 | * PERF_SAMPLE_CALLCHAIN - TODO | |
758 | * PERF_SAMPLE_RAW - tracepoint fields are handled separately | |
759 | * PERF_SAMPLE_BRANCH_STACK - TODO | |
760 | * PERF_SAMPLE_REGS_USER - TODO | |
761 | * PERF_SAMPLE_STACK_USER - TODO | |
762 | */ | |
763 | ||
764 | #define ADD_FIELD(cl, t, n) \ | |
765 | do { \ | |
766 | pr2(" field '%s'\n", n); \ | |
767 | if (bt_ctf_event_class_add_field(cl, t, n)) { \ | |
e0a7cce5 | 768 | pr_err("Failed to add field '%s';\n", n); \ |
edbe9817 JO |
769 | return -1; \ |
770 | } \ | |
771 | } while (0) | |
772 | ||
773 | if (type & PERF_SAMPLE_IP) | |
54cf776a | 774 | ADD_FIELD(event_class, cw->data.u64_hex, "perf_ip"); |
edbe9817 JO |
775 | |
776 | if (type & PERF_SAMPLE_TID) { | |
54cf776a SAS |
777 | ADD_FIELD(event_class, cw->data.s32, "perf_tid"); |
778 | ADD_FIELD(event_class, cw->data.s32, "perf_pid"); | |
edbe9817 JO |
779 | } |
780 | ||
781 | if ((type & PERF_SAMPLE_ID) || | |
782 | (type & PERF_SAMPLE_IDENTIFIER)) | |
54cf776a | 783 | ADD_FIELD(event_class, cw->data.u64, "perf_id"); |
edbe9817 JO |
784 | |
785 | if (type & PERF_SAMPLE_STREAM_ID) | |
54cf776a | 786 | ADD_FIELD(event_class, cw->data.u64, "perf_stream_id"); |
edbe9817 | 787 | |
edbe9817 | 788 | if (type & PERF_SAMPLE_PERIOD) |
54cf776a | 789 | ADD_FIELD(event_class, cw->data.u64, "perf_period"); |
edbe9817 JO |
790 | |
791 | if (type & PERF_SAMPLE_WEIGHT) | |
54cf776a | 792 | ADD_FIELD(event_class, cw->data.u64, "perf_weight"); |
edbe9817 JO |
793 | |
794 | if (type & PERF_SAMPLE_DATA_SRC) | |
54cf776a | 795 | ADD_FIELD(event_class, cw->data.u64, "perf_data_src"); |
edbe9817 JO |
796 | |
797 | if (type & PERF_SAMPLE_TRANSACTION) | |
54cf776a | 798 | ADD_FIELD(event_class, cw->data.u64, "perf_transaction"); |
edbe9817 JO |
799 | |
800 | #undef ADD_FIELD | |
801 | return 0; | |
802 | } | |
803 | ||
804 | static int add_event(struct ctf_writer *cw, struct perf_evsel *evsel) | |
805 | { | |
806 | struct bt_ctf_event_class *event_class; | |
807 | struct evsel_priv *priv; | |
808 | const char *name = perf_evsel__name(evsel); | |
809 | int ret; | |
810 | ||
811 | pr("Adding event '%s' (type %d)\n", name, evsel->attr.type); | |
812 | ||
813 | event_class = bt_ctf_event_class_create(name); | |
814 | if (!event_class) | |
815 | return -1; | |
816 | ||
817 | ret = add_generic_types(cw, evsel, event_class); | |
818 | if (ret) | |
819 | goto err; | |
820 | ||
69364727 SAS |
821 | if (evsel->attr.type == PERF_TYPE_TRACEPOINT) { |
822 | ret = add_tracepoint_types(cw, evsel, event_class); | |
823 | if (ret) | |
824 | goto err; | |
825 | } | |
826 | ||
edbe9817 JO |
827 | ret = bt_ctf_stream_class_add_event_class(cw->stream_class, event_class); |
828 | if (ret) { | |
829 | pr("Failed to add event class into stream.\n"); | |
830 | goto err; | |
831 | } | |
832 | ||
833 | priv = malloc(sizeof(*priv)); | |
834 | if (!priv) | |
835 | goto err; | |
836 | ||
837 | priv->event_class = event_class; | |
838 | evsel->priv = priv; | |
839 | return 0; | |
840 | ||
841 | err: | |
842 | bt_ctf_event_class_put(event_class); | |
843 | pr_err("Failed to add event '%s'.\n", name); | |
844 | return -1; | |
845 | } | |
846 | ||
847 | static int setup_events(struct ctf_writer *cw, struct perf_session *session) | |
848 | { | |
849 | struct perf_evlist *evlist = session->evlist; | |
850 | struct perf_evsel *evsel; | |
851 | int ret; | |
852 | ||
853 | evlist__for_each(evlist, evsel) { | |
854 | ret = add_event(cw, evsel); | |
855 | if (ret) | |
856 | return ret; | |
857 | } | |
858 | return 0; | |
859 | } | |
860 | ||
90e129ff SAS |
861 | static int setup_streams(struct ctf_writer *cw, struct perf_session *session) |
862 | { | |
863 | struct ctf_stream **stream; | |
864 | struct perf_header *ph = &session->header; | |
865 | int ncpus; | |
866 | ||
867 | /* | |
868 | * Try to get the number of cpus used in the data file, | |
869 | * if not present fallback to the MAX_CPUS. | |
870 | */ | |
871 | ncpus = ph->env.nr_cpus_avail ?: MAX_CPUS; | |
872 | ||
873 | stream = zalloc(sizeof(*stream) * ncpus); | |
874 | if (!stream) { | |
875 | pr_err("Failed to allocate streams.\n"); | |
876 | return -ENOMEM; | |
877 | } | |
878 | ||
879 | cw->stream = stream; | |
880 | cw->stream_cnt = ncpus; | |
881 | return 0; | |
882 | } | |
883 | ||
884 | static void free_streams(struct ctf_writer *cw) | |
885 | { | |
886 | int cpu; | |
887 | ||
888 | for (cpu = 0; cpu < cw->stream_cnt; cpu++) | |
889 | ctf_stream__delete(cw->stream[cpu]); | |
890 | ||
891 | free(cw->stream); | |
892 | } | |
893 | ||
edbe9817 JO |
894 | static int ctf_writer__setup_env(struct ctf_writer *cw, |
895 | struct perf_session *session) | |
896 | { | |
897 | struct perf_header *header = &session->header; | |
898 | struct bt_ctf_writer *writer = cw->writer; | |
899 | ||
900 | #define ADD(__n, __v) \ | |
901 | do { \ | |
902 | if (bt_ctf_writer_add_environment_field(writer, __n, __v)) \ | |
903 | return -1; \ | |
904 | } while (0) | |
905 | ||
906 | ADD("host", header->env.hostname); | |
907 | ADD("sysname", "Linux"); | |
908 | ADD("release", header->env.os_release); | |
909 | ADD("version", header->env.version); | |
910 | ADD("machine", header->env.arch); | |
911 | ADD("domain", "kernel"); | |
912 | ADD("tracer_name", "perf"); | |
913 | ||
914 | #undef ADD | |
915 | return 0; | |
916 | } | |
917 | ||
918 | static int ctf_writer__setup_clock(struct ctf_writer *cw) | |
919 | { | |
920 | struct bt_ctf_clock *clock = cw->clock; | |
921 | ||
922 | bt_ctf_clock_set_description(clock, "perf clock"); | |
923 | ||
924 | #define SET(__n, __v) \ | |
925 | do { \ | |
926 | if (bt_ctf_clock_set_##__n(clock, __v)) \ | |
927 | return -1; \ | |
928 | } while (0) | |
929 | ||
930 | SET(frequency, 1000000000); | |
931 | SET(offset_s, 0); | |
932 | SET(offset, 0); | |
933 | SET(precision, 10); | |
934 | SET(is_absolute, 0); | |
935 | ||
936 | #undef SET | |
937 | return 0; | |
938 | } | |
939 | ||
940 | static struct bt_ctf_field_type *create_int_type(int size, bool sign, bool hex) | |
941 | { | |
942 | struct bt_ctf_field_type *type; | |
943 | ||
944 | type = bt_ctf_field_type_integer_create(size); | |
945 | if (!type) | |
946 | return NULL; | |
947 | ||
948 | if (sign && | |
949 | bt_ctf_field_type_integer_set_signed(type, 1)) | |
950 | goto err; | |
951 | ||
952 | if (hex && | |
953 | bt_ctf_field_type_integer_set_base(type, BT_CTF_INTEGER_BASE_HEXADECIMAL)) | |
954 | goto err; | |
955 | ||
956 | pr2("Created type: INTEGER %d-bit %ssigned %s\n", | |
957 | size, sign ? "un" : "", hex ? "hex" : ""); | |
958 | return type; | |
959 | ||
960 | err: | |
961 | bt_ctf_field_type_put(type); | |
962 | return NULL; | |
963 | } | |
964 | ||
965 | static void ctf_writer__cleanup_data(struct ctf_writer *cw) | |
966 | { | |
967 | unsigned int i; | |
968 | ||
969 | for (i = 0; i < ARRAY_SIZE(cw->data.array); i++) | |
970 | bt_ctf_field_type_put(cw->data.array[i]); | |
971 | } | |
972 | ||
973 | static int ctf_writer__init_data(struct ctf_writer *cw) | |
974 | { | |
975 | #define CREATE_INT_TYPE(type, size, sign, hex) \ | |
976 | do { \ | |
977 | (type) = create_int_type(size, sign, hex); \ | |
978 | if (!(type)) \ | |
979 | goto err; \ | |
980 | } while (0) | |
981 | ||
982 | CREATE_INT_TYPE(cw->data.s64, 64, true, false); | |
983 | CREATE_INT_TYPE(cw->data.u64, 64, false, false); | |
984 | CREATE_INT_TYPE(cw->data.s32, 32, true, false); | |
985 | CREATE_INT_TYPE(cw->data.u32, 32, false, false); | |
26812d46 | 986 | CREATE_INT_TYPE(cw->data.u32_hex, 32, false, true); |
edbe9817 JO |
987 | CREATE_INT_TYPE(cw->data.u64_hex, 64, false, true); |
988 | ||
989 | cw->data.string = bt_ctf_field_type_string_create(); | |
990 | if (cw->data.string) | |
991 | return 0; | |
992 | ||
993 | err: | |
994 | ctf_writer__cleanup_data(cw); | |
995 | pr_err("Failed to create data types.\n"); | |
996 | return -1; | |
997 | } | |
998 | ||
999 | static void ctf_writer__cleanup(struct ctf_writer *cw) | |
1000 | { | |
1001 | ctf_writer__cleanup_data(cw); | |
1002 | ||
1003 | bt_ctf_clock_put(cw->clock); | |
90e129ff | 1004 | free_streams(cw); |
edbe9817 JO |
1005 | bt_ctf_stream_class_put(cw->stream_class); |
1006 | bt_ctf_writer_put(cw->writer); | |
1007 | ||
1008 | /* and NULL all the pointers */ | |
1009 | memset(cw, 0, sizeof(*cw)); | |
1010 | } | |
1011 | ||
1012 | static int ctf_writer__init(struct ctf_writer *cw, const char *path) | |
1013 | { | |
1014 | struct bt_ctf_writer *writer; | |
1015 | struct bt_ctf_stream_class *stream_class; | |
edbe9817 | 1016 | struct bt_ctf_clock *clock; |
90e129ff SAS |
1017 | struct bt_ctf_field_type *pkt_ctx_type; |
1018 | int ret; | |
edbe9817 JO |
1019 | |
1020 | /* CTF writer */ | |
1021 | writer = bt_ctf_writer_create(path); | |
1022 | if (!writer) | |
1023 | goto err; | |
1024 | ||
1025 | cw->writer = writer; | |
1026 | ||
1027 | /* CTF clock */ | |
1028 | clock = bt_ctf_clock_create("perf_clock"); | |
1029 | if (!clock) { | |
1030 | pr("Failed to create CTF clock.\n"); | |
1031 | goto err_cleanup; | |
1032 | } | |
1033 | ||
1034 | cw->clock = clock; | |
1035 | ||
1036 | if (ctf_writer__setup_clock(cw)) { | |
1037 | pr("Failed to setup CTF clock.\n"); | |
1038 | goto err_cleanup; | |
1039 | } | |
1040 | ||
1041 | /* CTF stream class */ | |
1042 | stream_class = bt_ctf_stream_class_create("perf_stream"); | |
1043 | if (!stream_class) { | |
1044 | pr("Failed to create CTF stream class.\n"); | |
1045 | goto err_cleanup; | |
1046 | } | |
1047 | ||
1048 | cw->stream_class = stream_class; | |
1049 | ||
1050 | /* CTF clock stream setup */ | |
1051 | if (bt_ctf_stream_class_set_clock(stream_class, clock)) { | |
1052 | pr("Failed to assign CTF clock to stream class.\n"); | |
1053 | goto err_cleanup; | |
1054 | } | |
1055 | ||
1056 | if (ctf_writer__init_data(cw)) | |
1057 | goto err_cleanup; | |
1058 | ||
90e129ff SAS |
1059 | /* Add cpu_id for packet context */ |
1060 | pkt_ctx_type = bt_ctf_stream_class_get_packet_context_type(stream_class); | |
1061 | if (!pkt_ctx_type) | |
edbe9817 | 1062 | goto err_cleanup; |
edbe9817 | 1063 | |
90e129ff SAS |
1064 | ret = bt_ctf_field_type_structure_add_field(pkt_ctx_type, cw->data.u32, "cpu_id"); |
1065 | bt_ctf_field_type_put(pkt_ctx_type); | |
1066 | if (ret) | |
1067 | goto err_cleanup; | |
edbe9817 JO |
1068 | |
1069 | /* CTF clock writer setup */ | |
1070 | if (bt_ctf_writer_add_clock(writer, clock)) { | |
1071 | pr("Failed to assign CTF clock to writer.\n"); | |
1072 | goto err_cleanup; | |
1073 | } | |
1074 | ||
1075 | return 0; | |
1076 | ||
1077 | err_cleanup: | |
1078 | ctf_writer__cleanup(cw); | |
1079 | err: | |
1080 | pr_err("Failed to setup CTF writer.\n"); | |
1081 | return -1; | |
1082 | } | |
1083 | ||
90e129ff SAS |
1084 | static int ctf_writer__flush_streams(struct ctf_writer *cw) |
1085 | { | |
1086 | int cpu, ret = 0; | |
1087 | ||
1088 | for (cpu = 0; cpu < cw->stream_cnt && !ret; cpu++) | |
1089 | ret = ctf_stream__flush(cw->stream[cpu]); | |
1090 | ||
1091 | return ret; | |
1092 | } | |
1093 | ||
8fa46753 JO |
1094 | static int convert__config(const char *var, const char *value, void *cb) |
1095 | { | |
1096 | struct convert *c = cb; | |
1097 | ||
1098 | if (!strcmp(var, "convert.queue-size")) { | |
1099 | c->queue_size = perf_config_u64(var, value); | |
1100 | return 0; | |
1101 | } | |
1102 | ||
1103 | return perf_default_config(var, value, cb); | |
1104 | } | |
1105 | ||
bd05954b | 1106 | int bt_convert__perf2ctf(const char *input, const char *path, bool force) |
edbe9817 JO |
1107 | { |
1108 | struct perf_session *session; | |
1109 | struct perf_data_file file = { | |
1110 | .path = input, | |
1111 | .mode = PERF_DATA_MODE_READ, | |
bd05954b | 1112 | .force = force, |
edbe9817 JO |
1113 | }; |
1114 | struct convert c = { | |
1115 | .tool = { | |
1116 | .sample = process_sample_event, | |
1117 | .mmap = perf_event__process_mmap, | |
1118 | .mmap2 = perf_event__process_mmap2, | |
1119 | .comm = perf_event__process_comm, | |
1120 | .exit = perf_event__process_exit, | |
1121 | .fork = perf_event__process_fork, | |
1122 | .lost = perf_event__process_lost, | |
1123 | .tracing_data = perf_event__process_tracing_data, | |
1124 | .build_id = perf_event__process_build_id, | |
1125 | .ordered_events = true, | |
1126 | .ordering_requires_timestamps = true, | |
1127 | }, | |
1128 | }; | |
1129 | struct ctf_writer *cw = &c.writer; | |
1130 | int err = -1; | |
1131 | ||
8fa46753 JO |
1132 | perf_config(convert__config, &c); |
1133 | ||
edbe9817 JO |
1134 | /* CTF writer */ |
1135 | if (ctf_writer__init(cw, path)) | |
1136 | return -1; | |
1137 | ||
1138 | /* perf.data session */ | |
b7b61cbe | 1139 | session = perf_session__new(&file, 0, &c.tool); |
edbe9817 JO |
1140 | if (!session) |
1141 | goto free_writer; | |
1142 | ||
8fa46753 JO |
1143 | if (c.queue_size) { |
1144 | ordered_events__set_alloc_size(&session->ordered_events, | |
1145 | c.queue_size); | |
1146 | } | |
1147 | ||
edbe9817 JO |
1148 | /* CTF writer env/clock setup */ |
1149 | if (ctf_writer__setup_env(cw, session)) | |
1150 | goto free_session; | |
1151 | ||
1152 | /* CTF events setup */ | |
1153 | if (setup_events(cw, session)) | |
1154 | goto free_session; | |
1155 | ||
90e129ff SAS |
1156 | if (setup_streams(cw, session)) |
1157 | goto free_session; | |
1158 | ||
b7b61cbe | 1159 | err = perf_session__process_events(session); |
edbe9817 | 1160 | if (!err) |
90e129ff | 1161 | err = ctf_writer__flush_streams(cw); |
c2141055 HK |
1162 | else |
1163 | pr_err("Error during conversion.\n"); | |
edbe9817 JO |
1164 | |
1165 | fprintf(stderr, | |
1166 | "[ perf data convert: Converted '%s' into CTF data '%s' ]\n", | |
1167 | file.path, path); | |
1168 | ||
1169 | fprintf(stderr, | |
1170 | "[ perf data convert: Converted and wrote %.3f MB (%" PRIu64 " samples) ]\n", | |
1171 | (double) c.events_size / 1024.0 / 1024.0, | |
1172 | c.events_count); | |
1173 | ||
edbe9817 | 1174 | perf_session__delete(session); |
c2141055 | 1175 | ctf_writer__cleanup(cw); |
edbe9817 | 1176 | |
c2141055 HK |
1177 | return err; |
1178 | ||
1179 | free_session: | |
1180 | perf_session__delete(session); | |
edbe9817 JO |
1181 | free_writer: |
1182 | ctf_writer__cleanup(cw); | |
c2141055 | 1183 | pr_err("Error during conversion setup.\n"); |
edbe9817 JO |
1184 | return err; |
1185 | } |