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mm: rename alloc_pages_exact_node() to __alloc_pages_node()
[linux/fpc-iii.git] / tools / perf / util / data-convert-bt.c
blob5bfc1198ab465c1873c7a112eefaa97bf286ee6f
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>
17 #include <babeltrace/ctf-ir/utils.h>
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
42 #define MAX_CPUS 4096
43
44 struct ctf_stream {
45 struct bt_ctf_stream *stream;
46 int cpu;
47 u32 count;
48 };
49
50 struct ctf_writer {
51 /* writer primitives */
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;
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;
66 struct bt_ctf_field_type *u64_hex;
67 };
68 struct bt_ctf_field_type *array[6];
69 } data;
70 };
71
72 struct convert {
73 struct perf_tool tool;
74 struct ctf_writer writer;
75
76 u64 events_size;
77 u64 events_count;
78
79 /* Ordered events configured queue size. */
80 u64 queue_size;
81 };
82
83 static int value_set(struct bt_ctf_field_type *type,
84 struct bt_ctf_event *event,
85 const char *name, u64 val)
86 {
87 struct bt_ctf_field *field;
88 bool sign = bt_ctf_field_type_integer_get_signed(type);
89 int ret;
90
91 field = bt_ctf_field_create(type);
92 if (!field) {
93 pr_err("failed to create a field %s\n", name);
94 return -1;
95 }
96
97 if (sign) {
98 ret = bt_ctf_field_signed_integer_set_value(field, val);
99 if (ret) {
100 pr_err("failed to set field value %s\n", name);
101 goto err;
102 }
103 } else {
104 ret = bt_ctf_field_unsigned_integer_set_value(field, val);
105 if (ret) {
106 pr_err("failed to set field value %s\n", name);
107 goto err;
108 }
109 }
110
111 ret = bt_ctf_event_set_payload(event, name, field);
112 if (ret) {
113 pr_err("failed to set payload %s\n", name);
114 goto err;
115 }
116
117 pr2(" SET [%s = %" PRIu64 "]\n", name, val);
118
119 err:
120 bt_ctf_field_put(field);
121 return ret;
122 }
123
124 #define __FUNC_VALUE_SET(_name, _val_type) \
125 static __maybe_unused int value_set_##_name(struct ctf_writer *cw, \
126 struct bt_ctf_event *event, \
127 const char *name, \
128 _val_type val) \
129 { \
130 struct bt_ctf_field_type *type = cw->data._name; \
131 return value_set(type, event, name, (u64) val); \
132 }
133
134 #define FUNC_VALUE_SET(_name) __FUNC_VALUE_SET(_name, _name)
135
136 FUNC_VALUE_SET(s32)
137 FUNC_VALUE_SET(u32)
138 FUNC_VALUE_SET(s64)
139 FUNC_VALUE_SET(u64)
140 __FUNC_VALUE_SET(u64_hex, u64)
141
142 static struct bt_ctf_field_type*
143 get_tracepoint_field_type(struct ctf_writer *cw, struct format_field *field)
144 {
145 unsigned long flags = field->flags;
146
147 if (flags & FIELD_IS_STRING)
148 return cw->data.string;
149
150 if (!(flags & FIELD_IS_SIGNED)) {
151 /* unsigned long are mostly pointers */
152 if (flags & FIELD_IS_LONG || flags & FIELD_IS_POINTER)
153 return cw->data.u64_hex;
154 }
155
156 if (flags & FIELD_IS_SIGNED) {
157 if (field->size == 8)
158 return cw->data.s64;
159 else
160 return cw->data.s32;
161 }
162
163 if (field->size == 8)
164 return cw->data.u64;
165 else
166 return cw->data.u32;
167 }
168
169 static unsigned long long adjust_signedness(unsigned long long value_int, int size)
170 {
171 unsigned long long value_mask;
172
173 /*
174 * value_mask = (1 << (size * 8 - 1)) - 1.
175 * Directly set value_mask for code readers.
176 */
177 switch (size) {
178 case 1:
179 value_mask = 0x7fULL;
180 break;
181 case 2:
182 value_mask = 0x7fffULL;
183 break;
184 case 4:
185 value_mask = 0x7fffffffULL;
186 break;
187 case 8:
188 /*
189 * For 64 bit value, return it self. There is no need
190 * to fill high bit.
191 */
192 /* Fall through */
193 default:
194 /* BUG! */
195 return value_int;
196 }
197
198 /* If it is a positive value, don't adjust. */
199 if ((value_int & (~0ULL - value_mask)) == 0)
200 return value_int;
201
202 /* Fill upper part of value_int with 1 to make it a negative long long. */
203 return (value_int & value_mask) | ~value_mask;
204 }
205
206 static int add_tracepoint_field_value(struct ctf_writer *cw,
207 struct bt_ctf_event_class *event_class,
208 struct bt_ctf_event *event,
209 struct perf_sample *sample,
210 struct format_field *fmtf)
211 {
212 struct bt_ctf_field_type *type;
213 struct bt_ctf_field *array_field;
214 struct bt_ctf_field *field;
215 const char *name = fmtf->name;
216 void *data = sample->raw_data;
217 unsigned long flags = fmtf->flags;
218 unsigned int n_items;
219 unsigned int i;
220 unsigned int offset;
221 unsigned int len;
222 int ret;
223
224 name = fmtf->alias;
225 offset = fmtf->offset;
226 len = fmtf->size;
227 if (flags & FIELD_IS_STRING)
228 flags &= ~FIELD_IS_ARRAY;
229
230 if (flags & FIELD_IS_DYNAMIC) {
231 unsigned long long tmp_val;
232
233 tmp_val = pevent_read_number(fmtf->event->pevent,
234 data + offset, len);
235 offset = tmp_val;
236 len = offset >> 16;
237 offset &= 0xffff;
238 }
239
240 if (flags & FIELD_IS_ARRAY) {
241
242 type = bt_ctf_event_class_get_field_by_name(
243 event_class, name);
244 array_field = bt_ctf_field_create(type);
245 bt_ctf_field_type_put(type);
246 if (!array_field) {
247 pr_err("Failed to create array type %s\n", name);
248 return -1;
249 }
250
251 len = fmtf->size / fmtf->arraylen;
252 n_items = fmtf->arraylen;
253 } else {
254 n_items = 1;
255 array_field = NULL;
256 }
257
258 type = get_tracepoint_field_type(cw, fmtf);
259
260 for (i = 0; i < n_items; i++) {
261 if (flags & FIELD_IS_ARRAY)
262 field = bt_ctf_field_array_get_field(array_field, i);
263 else
264 field = bt_ctf_field_create(type);
265
266 if (!field) {
267 pr_err("failed to create a field %s\n", name);
268 return -1;
269 }
270
271 if (flags & FIELD_IS_STRING)
272 ret = bt_ctf_field_string_set_value(field,
273 data + offset + i * len);
274 else {
275 unsigned long long value_int;
276
277 value_int = pevent_read_number(
278 fmtf->event->pevent,
279 data + offset + i * len, len);
280
281 if (!(flags & FIELD_IS_SIGNED))
282 ret = bt_ctf_field_unsigned_integer_set_value(
283 field, value_int);
284 else
285 ret = bt_ctf_field_signed_integer_set_value(
286 field, adjust_signedness(value_int, len));
287 }
288
289 if (ret) {
290 pr_err("failed to set file value %s\n", name);
291 goto err_put_field;
292 }
293 if (!(flags & FIELD_IS_ARRAY)) {
294 ret = bt_ctf_event_set_payload(event, name, field);
295 if (ret) {
296 pr_err("failed to set payload %s\n", name);
297 goto err_put_field;
298 }
299 }
300 bt_ctf_field_put(field);
301 }
302 if (flags & FIELD_IS_ARRAY) {
303 ret = bt_ctf_event_set_payload(event, name, array_field);
304 if (ret) {
305 pr_err("Failed add payload array %s\n", name);
306 return -1;
307 }
308 bt_ctf_field_put(array_field);
309 }
310 return 0;
311
312 err_put_field:
313 bt_ctf_field_put(field);
314 return -1;
315 }
316
317 static int add_tracepoint_fields_values(struct ctf_writer *cw,
318 struct bt_ctf_event_class *event_class,
319 struct bt_ctf_event *event,
320 struct format_field *fields,
321 struct perf_sample *sample)
322 {
323 struct format_field *field;
324 int ret;
325
326 for (field = fields; field; field = field->next) {
327 ret = add_tracepoint_field_value(cw, event_class, event, sample,
328 field);
329 if (ret)
330 return -1;
331 }
332 return 0;
333 }
334
335 static int add_tracepoint_values(struct ctf_writer *cw,
336 struct bt_ctf_event_class *event_class,
337 struct bt_ctf_event *event,
338 struct perf_evsel *evsel,
339 struct perf_sample *sample)
340 {
341 struct format_field *common_fields = evsel->tp_format->format.common_fields;
342 struct format_field *fields = evsel->tp_format->format.fields;
343 int ret;
344
345 ret = add_tracepoint_fields_values(cw, event_class, event,
346 common_fields, sample);
347 if (!ret)
348 ret = add_tracepoint_fields_values(cw, event_class, event,
349 fields, sample);
350
351 return ret;
352 }
353
354 static int add_generic_values(struct ctf_writer *cw,
355 struct bt_ctf_event *event,
356 struct perf_evsel *evsel,
357 struct perf_sample *sample)
358 {
359 u64 type = evsel->attr.sample_type;
360 int ret;
361
362 /*
363 * missing:
364 * PERF_SAMPLE_TIME - not needed as we have it in
365 * ctf event header
366 * PERF_SAMPLE_READ - TODO
367 * PERF_SAMPLE_CALLCHAIN - TODO
368 * PERF_SAMPLE_RAW - tracepoint fields are handled separately
369 * PERF_SAMPLE_BRANCH_STACK - TODO
370 * PERF_SAMPLE_REGS_USER - TODO
371 * PERF_SAMPLE_STACK_USER - TODO
372 */
373
374 if (type & PERF_SAMPLE_IP) {
375 ret = value_set_u64_hex(cw, event, "perf_ip", sample->ip);
376 if (ret)
377 return -1;
378 }
379
380 if (type & PERF_SAMPLE_TID) {
381 ret = value_set_s32(cw, event, "perf_tid", sample->tid);
382 if (ret)
383 return -1;
384
385 ret = value_set_s32(cw, event, "perf_pid", sample->pid);
386 if (ret)
387 return -1;
388 }
389
390 if ((type & PERF_SAMPLE_ID) ||
391 (type & PERF_SAMPLE_IDENTIFIER)) {
392 ret = value_set_u64(cw, event, "perf_id", sample->id);
393 if (ret)
394 return -1;
395 }
396
397 if (type & PERF_SAMPLE_STREAM_ID) {
398 ret = value_set_u64(cw, event, "perf_stream_id", sample->stream_id);
399 if (ret)
400 return -1;
401 }
402
403 if (type & PERF_SAMPLE_PERIOD) {
404 ret = value_set_u64(cw, event, "perf_period", sample->period);
405 if (ret)
406 return -1;
407 }
408
409 if (type & PERF_SAMPLE_WEIGHT) {
410 ret = value_set_u64(cw, event, "perf_weight", sample->weight);
411 if (ret)
412 return -1;
413 }
414
415 if (type & PERF_SAMPLE_DATA_SRC) {
416 ret = value_set_u64(cw, event, "perf_data_src",
417 sample->data_src);
418 if (ret)
419 return -1;
420 }
421
422 if (type & PERF_SAMPLE_TRANSACTION) {
423 ret = value_set_u64(cw, event, "perf_transaction",
424 sample->transaction);
425 if (ret)
426 return -1;
427 }
428
429 return 0;
430 }
431
432 static int ctf_stream__flush(struct ctf_stream *cs)
433 {
434 int err = 0;
435
436 if (cs) {
437 err = bt_ctf_stream_flush(cs->stream);
438 if (err)
439 pr_err("CTF stream %d flush failed\n", cs->cpu);
440
441 pr("Flush stream for cpu %d (%u samples)\n",
442 cs->cpu, cs->count);
443
444 cs->count = 0;
445 }
446
447 return err;
448 }
449
450 static struct ctf_stream *ctf_stream__create(struct ctf_writer *cw, int cpu)
451 {
452 struct ctf_stream *cs;
453 struct bt_ctf_field *pkt_ctx = NULL;
454 struct bt_ctf_field *cpu_field = NULL;
455 struct bt_ctf_stream *stream = NULL;
456 int ret;
457
458 cs = zalloc(sizeof(*cs));
459 if (!cs) {
460 pr_err("Failed to allocate ctf stream\n");
461 return NULL;
462 }
463
464 stream = bt_ctf_writer_create_stream(cw->writer, cw->stream_class);
465 if (!stream) {
466 pr_err("Failed to create CTF stream\n");
467 goto out;
468 }
469
470 pkt_ctx = bt_ctf_stream_get_packet_context(stream);
471 if (!pkt_ctx) {
472 pr_err("Failed to obtain packet context\n");
473 goto out;
474 }
475
476 cpu_field = bt_ctf_field_structure_get_field(pkt_ctx, "cpu_id");
477 bt_ctf_field_put(pkt_ctx);
478 if (!cpu_field) {
479 pr_err("Failed to obtain cpu field\n");
480 goto out;
481 }
482
483 ret = bt_ctf_field_unsigned_integer_set_value(cpu_field, (u32) cpu);
484 if (ret) {
485 pr_err("Failed to update CPU number\n");
486 goto out;
487 }
488
489 bt_ctf_field_put(cpu_field);
490
491 cs->cpu = cpu;
492 cs->stream = stream;
493 return cs;
494
495 out:
496 if (cpu_field)
497 bt_ctf_field_put(cpu_field);
498 if (stream)
499 bt_ctf_stream_put(stream);
500
501 free(cs);
502 return NULL;
503 }
504
505 static void ctf_stream__delete(struct ctf_stream *cs)
506 {
507 if (cs) {
508 bt_ctf_stream_put(cs->stream);
509 free(cs);
510 }
511 }
512
513 static struct ctf_stream *ctf_stream(struct ctf_writer *cw, int cpu)
514 {
515 struct ctf_stream *cs = cw->stream[cpu];
516
517 if (!cs) {
518 cs = ctf_stream__create(cw, cpu);
519 cw->stream[cpu] = cs;
520 }
521
522 return cs;
523 }
524
525 static int get_sample_cpu(struct ctf_writer *cw, struct perf_sample *sample,
526 struct perf_evsel *evsel)
527 {
528 int cpu = 0;
529
530 if (evsel->attr.sample_type & PERF_SAMPLE_CPU)
531 cpu = sample->cpu;
532
533 if (cpu > cw->stream_cnt) {
534 pr_err("Event was recorded for CPU %d, limit is at %d.\n",
535 cpu, cw->stream_cnt);
536 cpu = 0;
537 }
538
539 return cpu;
540 }
541
542 #define STREAM_FLUSH_COUNT 100000
543
544 /*
545 * Currently we have no other way to determine the
546 * time for the stream flush other than keep track
547 * of the number of events and check it against
548 * threshold.
549 */
550 static bool is_flush_needed(struct ctf_stream *cs)
551 {
552 return cs->count >= STREAM_FLUSH_COUNT;
553 }
554
555 static int process_sample_event(struct perf_tool *tool,
556 union perf_event *_event __maybe_unused,
557 struct perf_sample *sample,
558 struct perf_evsel *evsel,
559 struct machine *machine __maybe_unused)
560 {
561 struct convert *c = container_of(tool, struct convert, tool);
562 struct evsel_priv *priv = evsel->priv;
563 struct ctf_writer *cw = &c->writer;
564 struct ctf_stream *cs;
565 struct bt_ctf_event_class *event_class;
566 struct bt_ctf_event *event;
567 int ret;
568
569 if (WARN_ONCE(!priv, "Failed to setup all events.\n"))
570 return 0;
571
572 event_class = priv->event_class;
573
574 /* update stats */
575 c->events_count++;
576 c->events_size += _event->header.size;
577
578 pr_time2(sample->time, "sample %" PRIu64 "\n", c->events_count);
579
580 event = bt_ctf_event_create(event_class);
581 if (!event) {
582 pr_err("Failed to create an CTF event\n");
583 return -1;
584 }
585
586 bt_ctf_clock_set_time(cw->clock, sample->time);
587
588 ret = add_generic_values(cw, event, evsel, sample);
589 if (ret)
590 return -1;
591
592 if (evsel->attr.type == PERF_TYPE_TRACEPOINT) {
593 ret = add_tracepoint_values(cw, event_class, event,
594 evsel, sample);
595 if (ret)
596 return -1;
597 }
598
599 cs = ctf_stream(cw, get_sample_cpu(cw, sample, evsel));
600 if (cs) {
601 if (is_flush_needed(cs))
602 ctf_stream__flush(cs);
603
604 cs->count++;
605 bt_ctf_stream_append_event(cs->stream, event);
606 }
607
608 bt_ctf_event_put(event);
609 return cs ? 0 : -1;
610 }
611
612 /* If dup < 0, add a prefix. Else, add _dupl_X suffix. */
613 static char *change_name(char *name, char *orig_name, int dup)
614 {
615 char *new_name = NULL;
616 size_t len;
617
618 if (!name)
619 name = orig_name;
620
621 if (dup >= 10)
622 goto out;
623 /*
624 * Add '_' prefix to potential keywork. According to
625 * Mathieu Desnoyers (https://lkml.org/lkml/2015/1/23/652),
626 * futher CTF spec updating may require us to use '$'.
627 */
628 if (dup < 0)
629 len = strlen(name) + sizeof("_");
630 else
631 len = strlen(orig_name) + sizeof("_dupl_X");
632
633 new_name = malloc(len);
634 if (!new_name)
635 goto out;
636
637 if (dup < 0)
638 snprintf(new_name, len, "_%s", name);
639 else
640 snprintf(new_name, len, "%s_dupl_%d", orig_name, dup);
641
642 out:
643 if (name != orig_name)
644 free(name);
645 return new_name;
646 }
647
648 static int event_class_add_field(struct bt_ctf_event_class *event_class,
649 struct bt_ctf_field_type *type,
650 struct format_field *field)
651 {
652 struct bt_ctf_field_type *t = NULL;
653 char *name;
654 int dup = 1;
655 int ret;
656
657 /* alias was already assigned */
658 if (field->alias != field->name)
659 return bt_ctf_event_class_add_field(event_class, type,
660 (char *)field->alias);
661
662 name = field->name;
663
664 /* If 'name' is a keywork, add prefix. */
665 if (bt_ctf_validate_identifier(name))
666 name = change_name(name, field->name, -1);
667
668 if (!name) {
669 pr_err("Failed to fix invalid identifier.");
670 return -1;
671 }
672 while ((t = bt_ctf_event_class_get_field_by_name(event_class, name))) {
673 bt_ctf_field_type_put(t);
674 name = change_name(name, field->name, dup++);
675 if (!name) {
676 pr_err("Failed to create dup name for '%s'\n", field->name);
677 return -1;
678 }
679 }
680
681 ret = bt_ctf_event_class_add_field(event_class, type, name);
682 if (!ret)
683 field->alias = name;
684
685 return ret;
686 }
687
688 static int add_tracepoint_fields_types(struct ctf_writer *cw,
689 struct format_field *fields,
690 struct bt_ctf_event_class *event_class)
691 {
692 struct format_field *field;
693 int ret;
694
695 for (field = fields; field; field = field->next) {
696 struct bt_ctf_field_type *type;
697 unsigned long flags = field->flags;
698
699 pr2(" field '%s'\n", field->name);
700
701 type = get_tracepoint_field_type(cw, field);
702 if (!type)
703 return -1;
704
705 /*
706 * A string is an array of chars. For this we use the string
707 * type and don't care that it is an array. What we don't
708 * support is an array of strings.
709 */
710 if (flags & FIELD_IS_STRING)
711 flags &= ~FIELD_IS_ARRAY;
712
713 if (flags & FIELD_IS_ARRAY)
714 type = bt_ctf_field_type_array_create(type, field->arraylen);
715
716 ret = event_class_add_field(event_class, type, field);
717
718 if (flags & FIELD_IS_ARRAY)
719 bt_ctf_field_type_put(type);
720
721 if (ret) {
722 pr_err("Failed to add field '%s': %d\n",
723 field->name, ret);
724 return -1;
725 }
726 }
727
728 return 0;
729 }
730
731 static int add_tracepoint_types(struct ctf_writer *cw,
732 struct perf_evsel *evsel,
733 struct bt_ctf_event_class *class)
734 {
735 struct format_field *common_fields = evsel->tp_format->format.common_fields;
736 struct format_field *fields = evsel->tp_format->format.fields;
737 int ret;
738
739 ret = add_tracepoint_fields_types(cw, common_fields, class);
740 if (!ret)
741 ret = add_tracepoint_fields_types(cw, fields, class);
742
743 return ret;
744 }
745
746 static int add_generic_types(struct ctf_writer *cw, struct perf_evsel *evsel,
747 struct bt_ctf_event_class *event_class)
748 {
749 u64 type = evsel->attr.sample_type;
750
751 /*
752 * missing:
753 * PERF_SAMPLE_TIME - not needed as we have it in
754 * ctf event header
755 * PERF_SAMPLE_READ - TODO
756 * PERF_SAMPLE_CALLCHAIN - TODO
757 * PERF_SAMPLE_RAW - tracepoint fields are handled separately
758 * PERF_SAMPLE_BRANCH_STACK - TODO
759 * PERF_SAMPLE_REGS_USER - TODO
760 * PERF_SAMPLE_STACK_USER - TODO
761 */
762
763 #define ADD_FIELD(cl, t, n) \
764 do { \
765 pr2(" field '%s'\n", n); \
766 if (bt_ctf_event_class_add_field(cl, t, n)) { \
767 pr_err("Failed to add field '%s';\n", n); \
768 return -1; \
769 } \
770 } while (0)
771
772 if (type & PERF_SAMPLE_IP)
773 ADD_FIELD(event_class, cw->data.u64_hex, "perf_ip");
774
775 if (type & PERF_SAMPLE_TID) {
776 ADD_FIELD(event_class, cw->data.s32, "perf_tid");
777 ADD_FIELD(event_class, cw->data.s32, "perf_pid");
778 }
779
780 if ((type & PERF_SAMPLE_ID) ||
781 (type & PERF_SAMPLE_IDENTIFIER))
782 ADD_FIELD(event_class, cw->data.u64, "perf_id");
783
784 if (type & PERF_SAMPLE_STREAM_ID)
785 ADD_FIELD(event_class, cw->data.u64, "perf_stream_id");
786
787 if (type & PERF_SAMPLE_PERIOD)
788 ADD_FIELD(event_class, cw->data.u64, "perf_period");
789
790 if (type & PERF_SAMPLE_WEIGHT)
791 ADD_FIELD(event_class, cw->data.u64, "perf_weight");
792
793 if (type & PERF_SAMPLE_DATA_SRC)
794 ADD_FIELD(event_class, cw->data.u64, "perf_data_src");
795
796 if (type & PERF_SAMPLE_TRANSACTION)
797 ADD_FIELD(event_class, cw->data.u64, "perf_transaction");
798
799 #undef ADD_FIELD
800 return 0;
801 }
802
803 static int add_event(struct ctf_writer *cw, struct perf_evsel *evsel)
804 {
805 struct bt_ctf_event_class *event_class;
806 struct evsel_priv *priv;
807 const char *name = perf_evsel__name(evsel);
808 int ret;
809
810 pr("Adding event '%s' (type %d)\n", name, evsel->attr.type);
811
812 event_class = bt_ctf_event_class_create(name);
813 if (!event_class)
814 return -1;
815
816 ret = add_generic_types(cw, evsel, event_class);
817 if (ret)
818 goto err;
819
820 if (evsel->attr.type == PERF_TYPE_TRACEPOINT) {
821 ret = add_tracepoint_types(cw, evsel, event_class);
822 if (ret)
823 goto err;
824 }
825
826 ret = bt_ctf_stream_class_add_event_class(cw->stream_class, event_class);
827 if (ret) {
828 pr("Failed to add event class into stream.\n");
829 goto err;
830 }
831
832 priv = malloc(sizeof(*priv));
833 if (!priv)
834 goto err;
835
836 priv->event_class = event_class;
837 evsel->priv = priv;
838 return 0;
839
840 err:
841 bt_ctf_event_class_put(event_class);
842 pr_err("Failed to add event '%s'.\n", name);
843 return -1;
844 }
845
846 static int setup_events(struct ctf_writer *cw, struct perf_session *session)
847 {
848 struct perf_evlist *evlist = session->evlist;
849 struct perf_evsel *evsel;
850 int ret;
851
852 evlist__for_each(evlist, evsel) {
853 ret = add_event(cw, evsel);
854 if (ret)
855 return ret;
856 }
857 return 0;
858 }
859
860 static int setup_streams(struct ctf_writer *cw, struct perf_session *session)
861 {
862 struct ctf_stream **stream;
863 struct perf_header *ph = &session->header;
864 int ncpus;
865
866 /*
867 * Try to get the number of cpus used in the data file,
868 * if not present fallback to the MAX_CPUS.
869 */
870 ncpus = ph->env.nr_cpus_avail ?: MAX_CPUS;
871
872 stream = zalloc(sizeof(*stream) * ncpus);
873 if (!stream) {
874 pr_err("Failed to allocate streams.\n");
875 return -ENOMEM;
876 }
877
878 cw->stream = stream;
879 cw->stream_cnt = ncpus;
880 return 0;
881 }
882
883 static void free_streams(struct ctf_writer *cw)
884 {
885 int cpu;
886
887 for (cpu = 0; cpu < cw->stream_cnt; cpu++)
888 ctf_stream__delete(cw->stream[cpu]);
889
890 free(cw->stream);
891 }
892
893 static int ctf_writer__setup_env(struct ctf_writer *cw,
894 struct perf_session *session)
895 {
896 struct perf_header *header = &session->header;
897 struct bt_ctf_writer *writer = cw->writer;
898
899 #define ADD(__n, __v) \
900 do { \
901 if (bt_ctf_writer_add_environment_field(writer, __n, __v)) \
902 return -1; \
903 } while (0)
904
905 ADD("host", header->env.hostname);
906 ADD("sysname", "Linux");
907 ADD("release", header->env.os_release);
908 ADD("version", header->env.version);
909 ADD("machine", header->env.arch);
910 ADD("domain", "kernel");
911 ADD("tracer_name", "perf");
912
913 #undef ADD
914 return 0;
915 }
916
917 static int ctf_writer__setup_clock(struct ctf_writer *cw)
918 {
919 struct bt_ctf_clock *clock = cw->clock;
920
921 bt_ctf_clock_set_description(clock, "perf clock");
922
923 #define SET(__n, __v) \
924 do { \
925 if (bt_ctf_clock_set_##__n(clock, __v)) \
926 return -1; \
927 } while (0)
928
929 SET(frequency, 1000000000);
930 SET(offset_s, 0);
931 SET(offset, 0);
932 SET(precision, 10);
933 SET(is_absolute, 0);
934
935 #undef SET
936 return 0;
937 }
938
939 static struct bt_ctf_field_type *create_int_type(int size, bool sign, bool hex)
940 {
941 struct bt_ctf_field_type *type;
942
943 type = bt_ctf_field_type_integer_create(size);
944 if (!type)
945 return NULL;
946
947 if (sign &&
948 bt_ctf_field_type_integer_set_signed(type, 1))
949 goto err;
950
951 if (hex &&
952 bt_ctf_field_type_integer_set_base(type, BT_CTF_INTEGER_BASE_HEXADECIMAL))
953 goto err;
954
955 pr2("Created type: INTEGER %d-bit %ssigned %s\n",
956 size, sign ? "un" : "", hex ? "hex" : "");
957 return type;
958
959 err:
960 bt_ctf_field_type_put(type);
961 return NULL;
962 }
963
964 static void ctf_writer__cleanup_data(struct ctf_writer *cw)
965 {
966 unsigned int i;
967
968 for (i = 0; i < ARRAY_SIZE(cw->data.array); i++)
969 bt_ctf_field_type_put(cw->data.array[i]);
970 }
971
972 static int ctf_writer__init_data(struct ctf_writer *cw)
973 {
974 #define CREATE_INT_TYPE(type, size, sign, hex) \
975 do { \
976 (type) = create_int_type(size, sign, hex); \
977 if (!(type)) \
978 goto err; \
979 } while (0)
980
981 CREATE_INT_TYPE(cw->data.s64, 64, true, false);
982 CREATE_INT_TYPE(cw->data.u64, 64, false, false);
983 CREATE_INT_TYPE(cw->data.s32, 32, true, false);
984 CREATE_INT_TYPE(cw->data.u32, 32, false, false);
985 CREATE_INT_TYPE(cw->data.u64_hex, 64, false, true);
986
987 cw->data.string = bt_ctf_field_type_string_create();
988 if (cw->data.string)
989 return 0;
990
991 err:
992 ctf_writer__cleanup_data(cw);
993 pr_err("Failed to create data types.\n");
994 return -1;
995 }
996
997 static void ctf_writer__cleanup(struct ctf_writer *cw)
998 {
999 ctf_writer__cleanup_data(cw);
1000
1001 bt_ctf_clock_put(cw->clock);
1002 free_streams(cw);
1003 bt_ctf_stream_class_put(cw->stream_class);
1004 bt_ctf_writer_put(cw->writer);
1005
1006 /* and NULL all the pointers */
1007 memset(cw, 0, sizeof(*cw));
1008 }
1009
1010 static int ctf_writer__init(struct ctf_writer *cw, const char *path)
1011 {
1012 struct bt_ctf_writer *writer;
1013 struct bt_ctf_stream_class *stream_class;
1014 struct bt_ctf_clock *clock;
1015 struct bt_ctf_field_type *pkt_ctx_type;
1016 int ret;
1017
1018 /* CTF writer */
1019 writer = bt_ctf_writer_create(path);
1020 if (!writer)
1021 goto err;
1022
1023 cw->writer = writer;
1024
1025 /* CTF clock */
1026 clock = bt_ctf_clock_create("perf_clock");
1027 if (!clock) {
1028 pr("Failed to create CTF clock.\n");
1029 goto err_cleanup;
1030 }
1031
1032 cw->clock = clock;
1033
1034 if (ctf_writer__setup_clock(cw)) {
1035 pr("Failed to setup CTF clock.\n");
1036 goto err_cleanup;
1037 }
1038
1039 /* CTF stream class */
1040 stream_class = bt_ctf_stream_class_create("perf_stream");
1041 if (!stream_class) {
1042 pr("Failed to create CTF stream class.\n");
1043 goto err_cleanup;
1044 }
1045
1046 cw->stream_class = stream_class;
1047
1048 /* CTF clock stream setup */
1049 if (bt_ctf_stream_class_set_clock(stream_class, clock)) {
1050 pr("Failed to assign CTF clock to stream class.\n");
1051 goto err_cleanup;
1052 }
1053
1054 if (ctf_writer__init_data(cw))
1055 goto err_cleanup;
1056
1057 /* Add cpu_id for packet context */
1058 pkt_ctx_type = bt_ctf_stream_class_get_packet_context_type(stream_class);
1059 if (!pkt_ctx_type)
1060 goto err_cleanup;
1061
1062 ret = bt_ctf_field_type_structure_add_field(pkt_ctx_type, cw->data.u32, "cpu_id");
1063 bt_ctf_field_type_put(pkt_ctx_type);
1064 if (ret)
1065 goto err_cleanup;
1066
1067 /* CTF clock writer setup */
1068 if (bt_ctf_writer_add_clock(writer, clock)) {
1069 pr("Failed to assign CTF clock to writer.\n");
1070 goto err_cleanup;
1071 }
1072
1073 return 0;
1074
1075 err_cleanup:
1076 ctf_writer__cleanup(cw);
1077 err:
1078 pr_err("Failed to setup CTF writer.\n");
1079 return -1;
1080 }
1081
1082 static int ctf_writer__flush_streams(struct ctf_writer *cw)
1083 {
1084 int cpu, ret = 0;
1085
1086 for (cpu = 0; cpu < cw->stream_cnt && !ret; cpu++)
1087 ret = ctf_stream__flush(cw->stream[cpu]);
1088
1089 return ret;
1090 }
1091
1092 static int convert__config(const char *var, const char *value, void *cb)
1093 {
1094 struct convert *c = cb;
1095
1096 if (!strcmp(var, "convert.queue-size")) {
1097 c->queue_size = perf_config_u64(var, value);
1098 return 0;
1099 }
1100
1101 return perf_default_config(var, value, cb);
1102 }
1103
1104 int bt_convert__perf2ctf(const char *input, const char *path, bool force)
1105 {
1106 struct perf_session *session;
1107 struct perf_data_file file = {
1108 .path = input,
1109 .mode = PERF_DATA_MODE_READ,
1110 .force = force,
1111 };
1112 struct convert c = {
1113 .tool = {
1114 .sample = process_sample_event,
1115 .mmap = perf_event__process_mmap,
1116 .mmap2 = perf_event__process_mmap2,
1117 .comm = perf_event__process_comm,
1118 .exit = perf_event__process_exit,
1119 .fork = perf_event__process_fork,
1120 .lost = perf_event__process_lost,
1121 .tracing_data = perf_event__process_tracing_data,
1122 .build_id = perf_event__process_build_id,
1123 .ordered_events = true,
1124 .ordering_requires_timestamps = true,
1125 },
1126 };
1127 struct ctf_writer *cw = &c.writer;
1128 int err = -1;
1129
1130 perf_config(convert__config, &c);
1131
1132 /* CTF writer */
1133 if (ctf_writer__init(cw, path))
1134 return -1;
1135
1136 /* perf.data session */
1137 session = perf_session__new(&file, 0, &c.tool);
1138 if (!session)
1139 goto free_writer;
1140
1141 if (c.queue_size) {
1142 ordered_events__set_alloc_size(&session->ordered_events,
1143 c.queue_size);
1144 }
1145
1146 /* CTF writer env/clock setup */
1147 if (ctf_writer__setup_env(cw, session))
1148 goto free_session;
1149
1150 /* CTF events setup */
1151 if (setup_events(cw, session))
1152 goto free_session;
1153
1154 if (setup_streams(cw, session))
1155 goto free_session;
1156
1157 err = perf_session__process_events(session);
1158 if (!err)
1159 err = ctf_writer__flush_streams(cw);
1160 else
1161 pr_err("Error during conversion.\n");
1162
1163 fprintf(stderr,
1164 "[ perf data convert: Converted '%s' into CTF data '%s' ]\n",
1165 file.path, path);
1166
1167 fprintf(stderr,
1168 "[ perf data convert: Converted and wrote %.3f MB (%" PRIu64 " samples) ]\n",
1169 (double) c.events_size / 1024.0 / 1024.0,
1170 c.events_count);
1171
1172 perf_session__delete(session);
1173 ctf_writer__cleanup(cw);
1174
1175 return err;
1176
1177 free_session:
1178 perf_session__delete(session);
1179 free_writer:
1180 ctf_writer__cleanup(cw);
1181 pr_err("Error during conversion setup.\n");
1182 return err;
1183 }
Linux with added FPC-III support