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1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * CTF writing support via babeltrace.
4 *
5 * Copyright (C) 2014, Jiri Olsa <jolsa@redhat.com>
6 * Copyright (C) 2014, Sebastian Andrzej Siewior <bigeasy@linutronix.de>
7 */
8
9#include <errno.h>
10#include <inttypes.h>
11#include <linux/compiler.h>
12#include <linux/kernel.h>
13#include <linux/zalloc.h>
14#include <babeltrace/ctf-writer/writer.h>
15#include <babeltrace/ctf-writer/clock.h>
16#include <babeltrace/ctf-writer/stream.h>
17#include <babeltrace/ctf-writer/event.h>
18#include <babeltrace/ctf-writer/event-types.h>
19#include <babeltrace/ctf-writer/event-fields.h>
20#include <babeltrace/ctf-ir/utils.h>
21#include <babeltrace/ctf/events.h>
22#include <traceevent/event-parse.h>
23#include "asm/bug.h"
24#include "data-convert-bt.h"
25#include "session.h"
26#include "debug.h"
27#include "tool.h"
28#include "evlist.h"
29#include "evsel.h"
30#include "machine.h"
31#include "config.h"
32#include <linux/ctype.h>
33#include <linux/err.h>
34
35#define pr_N(n, fmt, ...) \
36 eprintf(n, debug_data_convert, fmt, ##__VA_ARGS__)
37
38#define pr(fmt, ...) pr_N(1, pr_fmt(fmt), ##__VA_ARGS__)
39#define pr2(fmt, ...) pr_N(2, pr_fmt(fmt), ##__VA_ARGS__)
40
41#define pr_time2(t, fmt, ...) pr_time_N(2, debug_data_convert, t, pr_fmt(fmt), ##__VA_ARGS__)
42
43struct evsel_priv {
44 struct bt_ctf_event_class *event_class;
45};
46
47#define MAX_CPUS 4096
48
49struct ctf_stream {
50 struct bt_ctf_stream *stream;
51 int cpu;
52 u32 count;
53};
54
55struct ctf_writer {
56 /* writer primitives */
57 struct bt_ctf_writer *writer;
58 struct ctf_stream **stream;
59 int stream_cnt;
60 struct bt_ctf_stream_class *stream_class;
61 struct bt_ctf_clock *clock;
62
63 /* data types */
64 union {
65 struct {
66 struct bt_ctf_field_type *s64;
67 struct bt_ctf_field_type *u64;
68 struct bt_ctf_field_type *s32;
69 struct bt_ctf_field_type *u32;
70 struct bt_ctf_field_type *string;
71 struct bt_ctf_field_type *u32_hex;
72 struct bt_ctf_field_type *u64_hex;
73 };
74 struct bt_ctf_field_type *array[6];
75 } data;
76 struct bt_ctf_event_class *comm_class;
77 struct bt_ctf_event_class *exit_class;
78 struct bt_ctf_event_class *fork_class;
79 struct bt_ctf_event_class *mmap_class;
80 struct bt_ctf_event_class *mmap2_class;
81};
82
83struct convert {
84 struct perf_tool tool;
85 struct ctf_writer writer;
86
87 u64 events_size;
88 u64 events_count;
89 u64 non_sample_count;
90
91 /* Ordered events configured queue size. */
92 u64 queue_size;
93};
94
95static int value_set(struct bt_ctf_field_type *type,
96 struct bt_ctf_event *event,
97 const char *name, u64 val)
98{
99 struct bt_ctf_field *field;
100 bool sign = bt_ctf_field_type_integer_get_signed(type);
101 int ret;
102
103 field = bt_ctf_field_create(type);
104 if (!field) {
105 pr_err("failed to create a field %s\n", name);
106 return -1;
107 }
108
109 if (sign) {
110 ret = bt_ctf_field_signed_integer_set_value(field, val);
111 if (ret) {
112 pr_err("failed to set field value %s\n", name);
113 goto err;
114 }
115 } else {
116 ret = bt_ctf_field_unsigned_integer_set_value(field, val);
117 if (ret) {
118 pr_err("failed to set field value %s\n", name);
119 goto err;
120 }
121 }
122
123 ret = bt_ctf_event_set_payload(event, name, field);
124 if (ret) {
125 pr_err("failed to set payload %s\n", name);
126 goto err;
127 }
128
129 pr2(" SET [%s = %" PRIu64 "]\n", name, val);
130
131err:
132 bt_ctf_field_put(field);
133 return ret;
134}
135
136#define __FUNC_VALUE_SET(_name, _val_type) \
137static __maybe_unused int value_set_##_name(struct ctf_writer *cw, \
138 struct bt_ctf_event *event, \
139 const char *name, \
140 _val_type val) \
141{ \
142 struct bt_ctf_field_type *type = cw->data._name; \
143 return value_set(type, event, name, (u64) val); \
144}
145
146#define FUNC_VALUE_SET(_name) __FUNC_VALUE_SET(_name, _name)
147
148FUNC_VALUE_SET(s32)
149FUNC_VALUE_SET(u32)
150FUNC_VALUE_SET(s64)
151FUNC_VALUE_SET(u64)
152__FUNC_VALUE_SET(u64_hex, u64)
153
154static int string_set_value(struct bt_ctf_field *field, const char *string);
155static __maybe_unused int
156value_set_string(struct ctf_writer *cw, struct bt_ctf_event *event,
157 const char *name, const char *string)
158{
159 struct bt_ctf_field_type *type = cw->data.string;
160 struct bt_ctf_field *field;
161 int ret = 0;
162
163 field = bt_ctf_field_create(type);
164 if (!field) {
165 pr_err("failed to create a field %s\n", name);
166 return -1;
167 }
168
169 ret = string_set_value(field, string);
170 if (ret) {
171 pr_err("failed to set value %s\n", name);
172 goto err_put_field;
173 }
174
175 ret = bt_ctf_event_set_payload(event, name, field);
176 if (ret)
177 pr_err("failed to set payload %s\n", name);
178
179err_put_field:
180 bt_ctf_field_put(field);
181 return ret;
182}
183
184static struct bt_ctf_field_type*
185get_tracepoint_field_type(struct ctf_writer *cw, struct tep_format_field *field)
186{
187 unsigned long flags = field->flags;
188
189 if (flags & TEP_FIELD_IS_STRING)
190 return cw->data.string;
191
192 if (!(flags & TEP_FIELD_IS_SIGNED)) {
193 /* unsigned long are mostly pointers */
194 if (flags & TEP_FIELD_IS_LONG || flags & TEP_FIELD_IS_POINTER)
195 return cw->data.u64_hex;
196 }
197
198 if (flags & TEP_FIELD_IS_SIGNED) {
199 if (field->size == 8)
200 return cw->data.s64;
201 else
202 return cw->data.s32;
203 }
204
205 if (field->size == 8)
206 return cw->data.u64;
207 else
208 return cw->data.u32;
209}
210
211static unsigned long long adjust_signedness(unsigned long long value_int, int size)
212{
213 unsigned long long value_mask;
214
215 /*
216 * value_mask = (1 << (size * 8 - 1)) - 1.
217 * Directly set value_mask for code readers.
218 */
219 switch (size) {
220 case 1:
221 value_mask = 0x7fULL;
222 break;
223 case 2:
224 value_mask = 0x7fffULL;
225 break;
226 case 4:
227 value_mask = 0x7fffffffULL;
228 break;
229 case 8:
230 /*
231 * For 64 bit value, return it self. There is no need
232 * to fill high bit.
233 */
234 /* Fall through */
235 default:
236 /* BUG! */
237 return value_int;
238 }
239
240 /* If it is a positive value, don't adjust. */
241 if ((value_int & (~0ULL - value_mask)) == 0)
242 return value_int;
243
244 /* Fill upper part of value_int with 1 to make it a negative long long. */
245 return (value_int & value_mask) | ~value_mask;
246}
247
248static int string_set_value(struct bt_ctf_field *field, const char *string)
249{
250 char *buffer = NULL;
251 size_t len = strlen(string), i, p;
252 int err;
253
254 for (i = p = 0; i < len; i++, p++) {
255 if (isprint(string[i])) {
256 if (!buffer)
257 continue;
258 buffer[p] = string[i];
259 } else {
260 char numstr[5];
261
262 snprintf(numstr, sizeof(numstr), "\\x%02x",
263 (unsigned int)(string[i]) & 0xff);
264
265 if (!buffer) {
266 buffer = zalloc(i + (len - i) * 4 + 2);
267 if (!buffer) {
268 pr_err("failed to set unprintable string '%s'\n", string);
269 return bt_ctf_field_string_set_value(field, "UNPRINTABLE-STRING");
270 }
271 if (i > 0)
272 strncpy(buffer, string, i);
273 }
274 memcpy(buffer + p, numstr, 4);
275 p += 3;
276 }
277 }
278
279 if (!buffer)
280 return bt_ctf_field_string_set_value(field, string);
281 err = bt_ctf_field_string_set_value(field, buffer);
282 free(buffer);
283 return err;
284}
285
286static int add_tracepoint_field_value(struct ctf_writer *cw,
287 struct bt_ctf_event_class *event_class,
288 struct bt_ctf_event *event,
289 struct perf_sample *sample,
290 struct tep_format_field *fmtf)
291{
292 struct bt_ctf_field_type *type;
293 struct bt_ctf_field *array_field;
294 struct bt_ctf_field *field;
295 const char *name = fmtf->name;
296 void *data = sample->raw_data;
297 unsigned long flags = fmtf->flags;
298 unsigned int n_items;
299 unsigned int i;
300 unsigned int offset;
301 unsigned int len;
302 int ret;
303
304 name = fmtf->alias;
305 offset = fmtf->offset;
306 len = fmtf->size;
307 if (flags & TEP_FIELD_IS_STRING)
308 flags &= ~TEP_FIELD_IS_ARRAY;
309
310 if (flags & TEP_FIELD_IS_DYNAMIC) {
311 unsigned long long tmp_val;
312
313 tmp_val = tep_read_number(fmtf->event->tep,
314 data + offset, len);
315 offset = tmp_val;
316 len = offset >> 16;
317 offset &= 0xffff;
318 }
319
320 if (flags & TEP_FIELD_IS_ARRAY) {
321
322 type = bt_ctf_event_class_get_field_by_name(
323 event_class, name);
324 array_field = bt_ctf_field_create(type);
325 bt_ctf_field_type_put(type);
326 if (!array_field) {
327 pr_err("Failed to create array type %s\n", name);
328 return -1;
329 }
330
331 len = fmtf->size / fmtf->arraylen;
332 n_items = fmtf->arraylen;
333 } else {
334 n_items = 1;
335 array_field = NULL;
336 }
337
338 type = get_tracepoint_field_type(cw, fmtf);
339
340 for (i = 0; i < n_items; i++) {
341 if (flags & TEP_FIELD_IS_ARRAY)
342 field = bt_ctf_field_array_get_field(array_field, i);
343 else
344 field = bt_ctf_field_create(type);
345
346 if (!field) {
347 pr_err("failed to create a field %s\n", name);
348 return -1;
349 }
350
351 if (flags & TEP_FIELD_IS_STRING)
352 ret = string_set_value(field, data + offset + i * len);
353 else {
354 unsigned long long value_int;
355
356 value_int = tep_read_number(
357 fmtf->event->tep,
358 data + offset + i * len, len);
359
360 if (!(flags & TEP_FIELD_IS_SIGNED))
361 ret = bt_ctf_field_unsigned_integer_set_value(
362 field, value_int);
363 else
364 ret = bt_ctf_field_signed_integer_set_value(
365 field, adjust_signedness(value_int, len));
366 }
367
368 if (ret) {
369 pr_err("failed to set file value %s\n", name);
370 goto err_put_field;
371 }
372 if (!(flags & TEP_FIELD_IS_ARRAY)) {
373 ret = bt_ctf_event_set_payload(event, name, field);
374 if (ret) {
375 pr_err("failed to set payload %s\n", name);
376 goto err_put_field;
377 }
378 }
379 bt_ctf_field_put(field);
380 }
381 if (flags & TEP_FIELD_IS_ARRAY) {
382 ret = bt_ctf_event_set_payload(event, name, array_field);
383 if (ret) {
384 pr_err("Failed add payload array %s\n", name);
385 return -1;
386 }
387 bt_ctf_field_put(array_field);
388 }
389 return 0;
390
391err_put_field:
392 bt_ctf_field_put(field);
393 return -1;
394}
395
396static int add_tracepoint_fields_values(struct ctf_writer *cw,
397 struct bt_ctf_event_class *event_class,
398 struct bt_ctf_event *event,
399 struct tep_format_field *fields,
400 struct perf_sample *sample)
401{
402 struct tep_format_field *field;
403 int ret;
404
405 for (field = fields; field; field = field->next) {
406 ret = add_tracepoint_field_value(cw, event_class, event, sample,
407 field);
408 if (ret)
409 return -1;
410 }
411 return 0;
412}
413
414static int add_tracepoint_values(struct ctf_writer *cw,
415 struct bt_ctf_event_class *event_class,
416 struct bt_ctf_event *event,
417 struct evsel *evsel,
418 struct perf_sample *sample)
419{
420 struct tep_format_field *common_fields = evsel->tp_format->format.common_fields;
421 struct tep_format_field *fields = evsel->tp_format->format.fields;
422 int ret;
423
424 ret = add_tracepoint_fields_values(cw, event_class, event,
425 common_fields, sample);
426 if (!ret)
427 ret = add_tracepoint_fields_values(cw, event_class, event,
428 fields, sample);
429
430 return ret;
431}
432
433static int
434add_bpf_output_values(struct bt_ctf_event_class *event_class,
435 struct bt_ctf_event *event,
436 struct perf_sample *sample)
437{
438 struct bt_ctf_field_type *len_type, *seq_type;
439 struct bt_ctf_field *len_field, *seq_field;
440 unsigned int raw_size = sample->raw_size;
441 unsigned int nr_elements = raw_size / sizeof(u32);
442 unsigned int i;
443 int ret;
444
445 if (nr_elements * sizeof(u32) != raw_size)
446 pr_warning("Incorrect raw_size (%u) in bpf output event, skip %zu bytes\n",
447 raw_size, nr_elements * sizeof(u32) - raw_size);
448
449 len_type = bt_ctf_event_class_get_field_by_name(event_class, "raw_len");
450 len_field = bt_ctf_field_create(len_type);
451 if (!len_field) {
452 pr_err("failed to create 'raw_len' for bpf output event\n");
453 ret = -1;
454 goto put_len_type;
455 }
456
457 ret = bt_ctf_field_unsigned_integer_set_value(len_field, nr_elements);
458 if (ret) {
459 pr_err("failed to set field value for raw_len\n");
460 goto put_len_field;
461 }
462 ret = bt_ctf_event_set_payload(event, "raw_len", len_field);
463 if (ret) {
464 pr_err("failed to set payload to raw_len\n");
465 goto put_len_field;
466 }
467
468 seq_type = bt_ctf_event_class_get_field_by_name(event_class, "raw_data");
469 seq_field = bt_ctf_field_create(seq_type);
470 if (!seq_field) {
471 pr_err("failed to create 'raw_data' for bpf output event\n");
472 ret = -1;
473 goto put_seq_type;
474 }
475
476 ret = bt_ctf_field_sequence_set_length(seq_field, len_field);
477 if (ret) {
478 pr_err("failed to set length of 'raw_data'\n");
479 goto put_seq_field;
480 }
481
482 for (i = 0; i < nr_elements; i++) {
483 struct bt_ctf_field *elem_field =
484 bt_ctf_field_sequence_get_field(seq_field, i);
485
486 ret = bt_ctf_field_unsigned_integer_set_value(elem_field,
487 ((u32 *)(sample->raw_data))[i]);
488
489 bt_ctf_field_put(elem_field);
490 if (ret) {
491 pr_err("failed to set raw_data[%d]\n", i);
492 goto put_seq_field;
493 }
494 }
495
496 ret = bt_ctf_event_set_payload(event, "raw_data", seq_field);
497 if (ret)
498 pr_err("failed to set payload for raw_data\n");
499
500put_seq_field:
501 bt_ctf_field_put(seq_field);
502put_seq_type:
503 bt_ctf_field_type_put(seq_type);
504put_len_field:
505 bt_ctf_field_put(len_field);
506put_len_type:
507 bt_ctf_field_type_put(len_type);
508 return ret;
509}
510
511static int
512add_callchain_output_values(struct bt_ctf_event_class *event_class,
513 struct bt_ctf_event *event,
514 struct ip_callchain *callchain)
515{
516 struct bt_ctf_field_type *len_type, *seq_type;
517 struct bt_ctf_field *len_field, *seq_field;
518 unsigned int nr_elements = callchain->nr;
519 unsigned int i;
520 int ret;
521
522 len_type = bt_ctf_event_class_get_field_by_name(
523 event_class, "perf_callchain_size");
524 len_field = bt_ctf_field_create(len_type);
525 if (!len_field) {
526 pr_err("failed to create 'perf_callchain_size' for callchain output event\n");
527 ret = -1;
528 goto put_len_type;
529 }
530
531 ret = bt_ctf_field_unsigned_integer_set_value(len_field, nr_elements);
532 if (ret) {
533 pr_err("failed to set field value for perf_callchain_size\n");
534 goto put_len_field;
535 }
536 ret = bt_ctf_event_set_payload(event, "perf_callchain_size", len_field);
537 if (ret) {
538 pr_err("failed to set payload to perf_callchain_size\n");
539 goto put_len_field;
540 }
541
542 seq_type = bt_ctf_event_class_get_field_by_name(
543 event_class, "perf_callchain");
544 seq_field = bt_ctf_field_create(seq_type);
545 if (!seq_field) {
546 pr_err("failed to create 'perf_callchain' for callchain output event\n");
547 ret = -1;
548 goto put_seq_type;
549 }
550
551 ret = bt_ctf_field_sequence_set_length(seq_field, len_field);
552 if (ret) {
553 pr_err("failed to set length of 'perf_callchain'\n");
554 goto put_seq_field;
555 }
556
557 for (i = 0; i < nr_elements; i++) {
558 struct bt_ctf_field *elem_field =
559 bt_ctf_field_sequence_get_field(seq_field, i);
560
561 ret = bt_ctf_field_unsigned_integer_set_value(elem_field,
562 ((u64 *)(callchain->ips))[i]);
563
564 bt_ctf_field_put(elem_field);
565 if (ret) {
566 pr_err("failed to set callchain[%d]\n", i);
567 goto put_seq_field;
568 }
569 }
570
571 ret = bt_ctf_event_set_payload(event, "perf_callchain", seq_field);
572 if (ret)
573 pr_err("failed to set payload for raw_data\n");
574
575put_seq_field:
576 bt_ctf_field_put(seq_field);
577put_seq_type:
578 bt_ctf_field_type_put(seq_type);
579put_len_field:
580 bt_ctf_field_put(len_field);
581put_len_type:
582 bt_ctf_field_type_put(len_type);
583 return ret;
584}
585
586static int add_generic_values(struct ctf_writer *cw,
587 struct bt_ctf_event *event,
588 struct evsel *evsel,
589 struct perf_sample *sample)
590{
591 u64 type = evsel->core.attr.sample_type;
592 int ret;
593
594 /*
595 * missing:
596 * PERF_SAMPLE_TIME - not needed as we have it in
597 * ctf event header
598 * PERF_SAMPLE_READ - TODO
599 * PERF_SAMPLE_RAW - tracepoint fields are handled separately
600 * PERF_SAMPLE_BRANCH_STACK - TODO
601 * PERF_SAMPLE_REGS_USER - TODO
602 * PERF_SAMPLE_STACK_USER - TODO
603 */
604
605 if (type & PERF_SAMPLE_IP) {
606 ret = value_set_u64_hex(cw, event, "perf_ip", sample->ip);
607 if (ret)
608 return -1;
609 }
610
611 if (type & PERF_SAMPLE_TID) {
612 ret = value_set_s32(cw, event, "perf_tid", sample->tid);
613 if (ret)
614 return -1;
615
616 ret = value_set_s32(cw, event, "perf_pid", sample->pid);
617 if (ret)
618 return -1;
619 }
620
621 if ((type & PERF_SAMPLE_ID) ||
622 (type & PERF_SAMPLE_IDENTIFIER)) {
623 ret = value_set_u64(cw, event, "perf_id", sample->id);
624 if (ret)
625 return -1;
626 }
627
628 if (type & PERF_SAMPLE_STREAM_ID) {
629 ret = value_set_u64(cw, event, "perf_stream_id", sample->stream_id);
630 if (ret)
631 return -1;
632 }
633
634 if (type & PERF_SAMPLE_PERIOD) {
635 ret = value_set_u64(cw, event, "perf_period", sample->period);
636 if (ret)
637 return -1;
638 }
639
640 if (type & PERF_SAMPLE_WEIGHT) {
641 ret = value_set_u64(cw, event, "perf_weight", sample->weight);
642 if (ret)
643 return -1;
644 }
645
646 if (type & PERF_SAMPLE_DATA_SRC) {
647 ret = value_set_u64(cw, event, "perf_data_src",
648 sample->data_src);
649 if (ret)
650 return -1;
651 }
652
653 if (type & PERF_SAMPLE_TRANSACTION) {
654 ret = value_set_u64(cw, event, "perf_transaction",
655 sample->transaction);
656 if (ret)
657 return -1;
658 }
659
660 return 0;
661}
662
663static int ctf_stream__flush(struct ctf_stream *cs)
664{
665 int err = 0;
666
667 if (cs) {
668 err = bt_ctf_stream_flush(cs->stream);
669 if (err)
670 pr_err("CTF stream %d flush failed\n", cs->cpu);
671
672 pr("Flush stream for cpu %d (%u samples)\n",
673 cs->cpu, cs->count);
674
675 cs->count = 0;
676 }
677
678 return err;
679}
680
681static struct ctf_stream *ctf_stream__create(struct ctf_writer *cw, int cpu)
682{
683 struct ctf_stream *cs;
684 struct bt_ctf_field *pkt_ctx = NULL;
685 struct bt_ctf_field *cpu_field = NULL;
686 struct bt_ctf_stream *stream = NULL;
687 int ret;
688
689 cs = zalloc(sizeof(*cs));
690 if (!cs) {
691 pr_err("Failed to allocate ctf stream\n");
692 return NULL;
693 }
694
695 stream = bt_ctf_writer_create_stream(cw->writer, cw->stream_class);
696 if (!stream) {
697 pr_err("Failed to create CTF stream\n");
698 goto out;
699 }
700
701 pkt_ctx = bt_ctf_stream_get_packet_context(stream);
702 if (!pkt_ctx) {
703 pr_err("Failed to obtain packet context\n");
704 goto out;
705 }
706
707 cpu_field = bt_ctf_field_structure_get_field(pkt_ctx, "cpu_id");
708 bt_ctf_field_put(pkt_ctx);
709 if (!cpu_field) {
710 pr_err("Failed to obtain cpu field\n");
711 goto out;
712 }
713
714 ret = bt_ctf_field_unsigned_integer_set_value(cpu_field, (u32) cpu);
715 if (ret) {
716 pr_err("Failed to update CPU number\n");
717 goto out;
718 }
719
720 bt_ctf_field_put(cpu_field);
721
722 cs->cpu = cpu;
723 cs->stream = stream;
724 return cs;
725
726out:
727 if (cpu_field)
728 bt_ctf_field_put(cpu_field);
729 if (stream)
730 bt_ctf_stream_put(stream);
731
732 free(cs);
733 return NULL;
734}
735
736static void ctf_stream__delete(struct ctf_stream *cs)
737{
738 if (cs) {
739 bt_ctf_stream_put(cs->stream);
740 free(cs);
741 }
742}
743
744static struct ctf_stream *ctf_stream(struct ctf_writer *cw, int cpu)
745{
746 struct ctf_stream *cs = cw->stream[cpu];
747
748 if (!cs) {
749 cs = ctf_stream__create(cw, cpu);
750 cw->stream[cpu] = cs;
751 }
752
753 return cs;
754}
755
756static int get_sample_cpu(struct ctf_writer *cw, struct perf_sample *sample,
757 struct evsel *evsel)
758{
759 int cpu = 0;
760
761 if (evsel->core.attr.sample_type & PERF_SAMPLE_CPU)
762 cpu = sample->cpu;
763
764 if (cpu > cw->stream_cnt) {
765 pr_err("Event was recorded for CPU %d, limit is at %d.\n",
766 cpu, cw->stream_cnt);
767 cpu = 0;
768 }
769
770 return cpu;
771}
772
773#define STREAM_FLUSH_COUNT 100000
774
775/*
776 * Currently we have no other way to determine the
777 * time for the stream flush other than keep track
778 * of the number of events and check it against
779 * threshold.
780 */
781static bool is_flush_needed(struct ctf_stream *cs)
782{
783 return cs->count >= STREAM_FLUSH_COUNT;
784}
785
786static int process_sample_event(struct perf_tool *tool,
787 union perf_event *_event,
788 struct perf_sample *sample,
789 struct evsel *evsel,
790 struct machine *machine __maybe_unused)
791{
792 struct convert *c = container_of(tool, struct convert, tool);
793 struct evsel_priv *priv = evsel->priv;
794 struct ctf_writer *cw = &c->writer;
795 struct ctf_stream *cs;
796 struct bt_ctf_event_class *event_class;
797 struct bt_ctf_event *event;
798 int ret;
799 unsigned long type = evsel->core.attr.sample_type;
800
801 if (WARN_ONCE(!priv, "Failed to setup all events.\n"))
802 return 0;
803
804 event_class = priv->event_class;
805
806 /* update stats */
807 c->events_count++;
808 c->events_size += _event->header.size;
809
810 pr_time2(sample->time, "sample %" PRIu64 "\n", c->events_count);
811
812 event = bt_ctf_event_create(event_class);
813 if (!event) {
814 pr_err("Failed to create an CTF event\n");
815 return -1;
816 }
817
818 bt_ctf_clock_set_time(cw->clock, sample->time);
819
820 ret = add_generic_values(cw, event, evsel, sample);
821 if (ret)
822 return -1;
823
824 if (evsel->core.attr.type == PERF_TYPE_TRACEPOINT) {
825 ret = add_tracepoint_values(cw, event_class, event,
826 evsel, sample);
827 if (ret)
828 return -1;
829 }
830
831 if (type & PERF_SAMPLE_CALLCHAIN) {
832 ret = add_callchain_output_values(event_class,
833 event, sample->callchain);
834 if (ret)
835 return -1;
836 }
837
838 if (perf_evsel__is_bpf_output(evsel)) {
839 ret = add_bpf_output_values(event_class, event, sample);
840 if (ret)
841 return -1;
842 }
843
844 cs = ctf_stream(cw, get_sample_cpu(cw, sample, evsel));
845 if (cs) {
846 if (is_flush_needed(cs))
847 ctf_stream__flush(cs);
848
849 cs->count++;
850 bt_ctf_stream_append_event(cs->stream, event);
851 }
852
853 bt_ctf_event_put(event);
854 return cs ? 0 : -1;
855}
856
857#define __NON_SAMPLE_SET_FIELD(_name, _type, _field) \
858do { \
859 ret = value_set_##_type(cw, event, #_field, _event->_name._field);\
860 if (ret) \
861 return -1; \
862} while(0)
863
864#define __FUNC_PROCESS_NON_SAMPLE(_name, body) \
865static int process_##_name##_event(struct perf_tool *tool, \
866 union perf_event *_event, \
867 struct perf_sample *sample, \
868 struct machine *machine) \
869{ \
870 struct convert *c = container_of(tool, struct convert, tool);\
871 struct ctf_writer *cw = &c->writer; \
872 struct bt_ctf_event_class *event_class = cw->_name##_class;\
873 struct bt_ctf_event *event; \
874 struct ctf_stream *cs; \
875 int ret; \
876 \
877 c->non_sample_count++; \
878 c->events_size += _event->header.size; \
879 event = bt_ctf_event_create(event_class); \
880 if (!event) { \
881 pr_err("Failed to create an CTF event\n"); \
882 return -1; \
883 } \
884 \
885 bt_ctf_clock_set_time(cw->clock, sample->time); \
886 body \
887 cs = ctf_stream(cw, 0); \
888 if (cs) { \
889 if (is_flush_needed(cs)) \
890 ctf_stream__flush(cs); \
891 \
892 cs->count++; \
893 bt_ctf_stream_append_event(cs->stream, event); \
894 } \
895 bt_ctf_event_put(event); \
896 \
897 return perf_event__process_##_name(tool, _event, sample, machine);\
898}
899
900__FUNC_PROCESS_NON_SAMPLE(comm,
901 __NON_SAMPLE_SET_FIELD(comm, u32, pid);
902 __NON_SAMPLE_SET_FIELD(comm, u32, tid);
903 __NON_SAMPLE_SET_FIELD(comm, string, comm);
904)
905__FUNC_PROCESS_NON_SAMPLE(fork,
906 __NON_SAMPLE_SET_FIELD(fork, u32, pid);
907 __NON_SAMPLE_SET_FIELD(fork, u32, ppid);
908 __NON_SAMPLE_SET_FIELD(fork, u32, tid);
909 __NON_SAMPLE_SET_FIELD(fork, u32, ptid);
910 __NON_SAMPLE_SET_FIELD(fork, u64, time);
911)
912
913__FUNC_PROCESS_NON_SAMPLE(exit,
914 __NON_SAMPLE_SET_FIELD(fork, u32, pid);
915 __NON_SAMPLE_SET_FIELD(fork, u32, ppid);
916 __NON_SAMPLE_SET_FIELD(fork, u32, tid);
917 __NON_SAMPLE_SET_FIELD(fork, u32, ptid);
918 __NON_SAMPLE_SET_FIELD(fork, u64, time);
919)
920__FUNC_PROCESS_NON_SAMPLE(mmap,
921 __NON_SAMPLE_SET_FIELD(mmap, u32, pid);
922 __NON_SAMPLE_SET_FIELD(mmap, u32, tid);
923 __NON_SAMPLE_SET_FIELD(mmap, u64_hex, start);
924 __NON_SAMPLE_SET_FIELD(mmap, string, filename);
925)
926__FUNC_PROCESS_NON_SAMPLE(mmap2,
927 __NON_SAMPLE_SET_FIELD(mmap2, u32, pid);
928 __NON_SAMPLE_SET_FIELD(mmap2, u32, tid);
929 __NON_SAMPLE_SET_FIELD(mmap2, u64_hex, start);
930 __NON_SAMPLE_SET_FIELD(mmap2, string, filename);
931)
932#undef __NON_SAMPLE_SET_FIELD
933#undef __FUNC_PROCESS_NON_SAMPLE
934
935/* If dup < 0, add a prefix. Else, add _dupl_X suffix. */
936static char *change_name(char *name, char *orig_name, int dup)
937{
938 char *new_name = NULL;
939 size_t len;
940
941 if (!name)
942 name = orig_name;
943
944 if (dup >= 10)
945 goto out;
946 /*
947 * Add '_' prefix to potential keywork. According to
948 * Mathieu Desnoyers (https://lkml.org/lkml/2015/1/23/652),
949 * futher CTF spec updating may require us to use '$'.
950 */
951 if (dup < 0)
952 len = strlen(name) + sizeof("_");
953 else
954 len = strlen(orig_name) + sizeof("_dupl_X");
955
956 new_name = malloc(len);
957 if (!new_name)
958 goto out;
959
960 if (dup < 0)
961 snprintf(new_name, len, "_%s", name);
962 else
963 snprintf(new_name, len, "%s_dupl_%d", orig_name, dup);
964
965out:
966 if (name != orig_name)
967 free(name);
968 return new_name;
969}
970
971static int event_class_add_field(struct bt_ctf_event_class *event_class,
972 struct bt_ctf_field_type *type,
973 struct tep_format_field *field)
974{
975 struct bt_ctf_field_type *t = NULL;
976 char *name;
977 int dup = 1;
978 int ret;
979
980 /* alias was already assigned */
981 if (field->alias != field->name)
982 return bt_ctf_event_class_add_field(event_class, type,
983 (char *)field->alias);
984
985 name = field->name;
986
987 /* If 'name' is a keywork, add prefix. */
988 if (bt_ctf_validate_identifier(name))
989 name = change_name(name, field->name, -1);
990
991 if (!name) {
992 pr_err("Failed to fix invalid identifier.");
993 return -1;
994 }
995 while ((t = bt_ctf_event_class_get_field_by_name(event_class, name))) {
996 bt_ctf_field_type_put(t);
997 name = change_name(name, field->name, dup++);
998 if (!name) {
999 pr_err("Failed to create dup name for '%s'\n", field->name);
1000 return -1;
1001 }
1002 }
1003
1004 ret = bt_ctf_event_class_add_field(event_class, type, name);
1005 if (!ret)
1006 field->alias = name;
1007
1008 return ret;
1009}
1010
1011static int add_tracepoint_fields_types(struct ctf_writer *cw,
1012 struct tep_format_field *fields,
1013 struct bt_ctf_event_class *event_class)
1014{
1015 struct tep_format_field *field;
1016 int ret;
1017
1018 for (field = fields; field; field = field->next) {
1019 struct bt_ctf_field_type *type;
1020 unsigned long flags = field->flags;
1021
1022 pr2(" field '%s'\n", field->name);
1023
1024 type = get_tracepoint_field_type(cw, field);
1025 if (!type)
1026 return -1;
1027
1028 /*
1029 * A string is an array of chars. For this we use the string
1030 * type and don't care that it is an array. What we don't
1031 * support is an array of strings.
1032 */
1033 if (flags & TEP_FIELD_IS_STRING)
1034 flags &= ~TEP_FIELD_IS_ARRAY;
1035
1036 if (flags & TEP_FIELD_IS_ARRAY)
1037 type = bt_ctf_field_type_array_create(type, field->arraylen);
1038
1039 ret = event_class_add_field(event_class, type, field);
1040
1041 if (flags & TEP_FIELD_IS_ARRAY)
1042 bt_ctf_field_type_put(type);
1043
1044 if (ret) {
1045 pr_err("Failed to add field '%s': %d\n",
1046 field->name, ret);
1047 return -1;
1048 }
1049 }
1050
1051 return 0;
1052}
1053
1054static int add_tracepoint_types(struct ctf_writer *cw,
1055 struct evsel *evsel,
1056 struct bt_ctf_event_class *class)
1057{
1058 struct tep_format_field *common_fields = evsel->tp_format->format.common_fields;
1059 struct tep_format_field *fields = evsel->tp_format->format.fields;
1060 int ret;
1061
1062 ret = add_tracepoint_fields_types(cw, common_fields, class);
1063 if (!ret)
1064 ret = add_tracepoint_fields_types(cw, fields, class);
1065
1066 return ret;
1067}
1068
1069static int add_bpf_output_types(struct ctf_writer *cw,
1070 struct bt_ctf_event_class *class)
1071{
1072 struct bt_ctf_field_type *len_type = cw->data.u32;
1073 struct bt_ctf_field_type *seq_base_type = cw->data.u32_hex;
1074 struct bt_ctf_field_type *seq_type;
1075 int ret;
1076
1077 ret = bt_ctf_event_class_add_field(class, len_type, "raw_len");
1078 if (ret)
1079 return ret;
1080
1081 seq_type = bt_ctf_field_type_sequence_create(seq_base_type, "raw_len");
1082 if (!seq_type)
1083 return -1;
1084
1085 return bt_ctf_event_class_add_field(class, seq_type, "raw_data");
1086}
1087
1088static int add_generic_types(struct ctf_writer *cw, struct evsel *evsel,
1089 struct bt_ctf_event_class *event_class)
1090{
1091 u64 type = evsel->core.attr.sample_type;
1092
1093 /*
1094 * missing:
1095 * PERF_SAMPLE_TIME - not needed as we have it in
1096 * ctf event header
1097 * PERF_SAMPLE_READ - TODO
1098 * PERF_SAMPLE_CALLCHAIN - TODO
1099 * PERF_SAMPLE_RAW - tracepoint fields and BPF output
1100 * are handled separately
1101 * PERF_SAMPLE_BRANCH_STACK - TODO
1102 * PERF_SAMPLE_REGS_USER - TODO
1103 * PERF_SAMPLE_STACK_USER - TODO
1104 */
1105
1106#define ADD_FIELD(cl, t, n) \
1107 do { \
1108 pr2(" field '%s'\n", n); \
1109 if (bt_ctf_event_class_add_field(cl, t, n)) { \
1110 pr_err("Failed to add field '%s';\n", n); \
1111 return -1; \
1112 } \
1113 } while (0)
1114
1115 if (type & PERF_SAMPLE_IP)
1116 ADD_FIELD(event_class, cw->data.u64_hex, "perf_ip");
1117
1118 if (type & PERF_SAMPLE_TID) {
1119 ADD_FIELD(event_class, cw->data.s32, "perf_tid");
1120 ADD_FIELD(event_class, cw->data.s32, "perf_pid");
1121 }
1122
1123 if ((type & PERF_SAMPLE_ID) ||
1124 (type & PERF_SAMPLE_IDENTIFIER))
1125 ADD_FIELD(event_class, cw->data.u64, "perf_id");
1126
1127 if (type & PERF_SAMPLE_STREAM_ID)
1128 ADD_FIELD(event_class, cw->data.u64, "perf_stream_id");
1129
1130 if (type & PERF_SAMPLE_PERIOD)
1131 ADD_FIELD(event_class, cw->data.u64, "perf_period");
1132
1133 if (type & PERF_SAMPLE_WEIGHT)
1134 ADD_FIELD(event_class, cw->data.u64, "perf_weight");
1135
1136 if (type & PERF_SAMPLE_DATA_SRC)
1137 ADD_FIELD(event_class, cw->data.u64, "perf_data_src");
1138
1139 if (type & PERF_SAMPLE_TRANSACTION)
1140 ADD_FIELD(event_class, cw->data.u64, "perf_transaction");
1141
1142 if (type & PERF_SAMPLE_CALLCHAIN) {
1143 ADD_FIELD(event_class, cw->data.u32, "perf_callchain_size");
1144 ADD_FIELD(event_class,
1145 bt_ctf_field_type_sequence_create(
1146 cw->data.u64_hex, "perf_callchain_size"),
1147 "perf_callchain");
1148 }
1149
1150#undef ADD_FIELD
1151 return 0;
1152}
1153
1154static int add_event(struct ctf_writer *cw, struct evsel *evsel)
1155{
1156 struct bt_ctf_event_class *event_class;
1157 struct evsel_priv *priv;
1158 const char *name = perf_evsel__name(evsel);
1159 int ret;
1160
1161 pr("Adding event '%s' (type %d)\n", name, evsel->core.attr.type);
1162
1163 event_class = bt_ctf_event_class_create(name);
1164 if (!event_class)
1165 return -1;
1166
1167 ret = add_generic_types(cw, evsel, event_class);
1168 if (ret)
1169 goto err;
1170
1171 if (evsel->core.attr.type == PERF_TYPE_TRACEPOINT) {
1172 ret = add_tracepoint_types(cw, evsel, event_class);
1173 if (ret)
1174 goto err;
1175 }
1176
1177 if (perf_evsel__is_bpf_output(evsel)) {
1178 ret = add_bpf_output_types(cw, event_class);
1179 if (ret)
1180 goto err;
1181 }
1182
1183 ret = bt_ctf_stream_class_add_event_class(cw->stream_class, event_class);
1184 if (ret) {
1185 pr("Failed to add event class into stream.\n");
1186 goto err;
1187 }
1188
1189 priv = malloc(sizeof(*priv));
1190 if (!priv)
1191 goto err;
1192
1193 priv->event_class = event_class;
1194 evsel->priv = priv;
1195 return 0;
1196
1197err:
1198 bt_ctf_event_class_put(event_class);
1199 pr_err("Failed to add event '%s'.\n", name);
1200 return -1;
1201}
1202
1203static int setup_events(struct ctf_writer *cw, struct perf_session *session)
1204{
1205 struct evlist *evlist = session->evlist;
1206 struct evsel *evsel;
1207 int ret;
1208
1209 evlist__for_each_entry(evlist, evsel) {
1210 ret = add_event(cw, evsel);
1211 if (ret)
1212 return ret;
1213 }
1214 return 0;
1215}
1216
1217#define __NON_SAMPLE_ADD_FIELD(t, n) \
1218 do { \
1219 pr2(" field '%s'\n", #n); \
1220 if (bt_ctf_event_class_add_field(event_class, cw->data.t, #n)) {\
1221 pr_err("Failed to add field '%s';\n", #n);\
1222 return -1; \
1223 } \
1224 } while(0)
1225
1226#define __FUNC_ADD_NON_SAMPLE_EVENT_CLASS(_name, body) \
1227static int add_##_name##_event(struct ctf_writer *cw) \
1228{ \
1229 struct bt_ctf_event_class *event_class; \
1230 int ret; \
1231 \
1232 pr("Adding "#_name" event\n"); \
1233 event_class = bt_ctf_event_class_create("perf_" #_name);\
1234 if (!event_class) \
1235 return -1; \
1236 body \
1237 \
1238 ret = bt_ctf_stream_class_add_event_class(cw->stream_class, event_class);\
1239 if (ret) { \
1240 pr("Failed to add event class '"#_name"' into stream.\n");\
1241 return ret; \
1242 } \
1243 \
1244 cw->_name##_class = event_class; \
1245 bt_ctf_event_class_put(event_class); \
1246 return 0; \
1247}
1248
1249__FUNC_ADD_NON_SAMPLE_EVENT_CLASS(comm,
1250 __NON_SAMPLE_ADD_FIELD(u32, pid);
1251 __NON_SAMPLE_ADD_FIELD(u32, tid);
1252 __NON_SAMPLE_ADD_FIELD(string, comm);
1253)
1254
1255__FUNC_ADD_NON_SAMPLE_EVENT_CLASS(fork,
1256 __NON_SAMPLE_ADD_FIELD(u32, pid);
1257 __NON_SAMPLE_ADD_FIELD(u32, ppid);
1258 __NON_SAMPLE_ADD_FIELD(u32, tid);
1259 __NON_SAMPLE_ADD_FIELD(u32, ptid);
1260 __NON_SAMPLE_ADD_FIELD(u64, time);
1261)
1262
1263__FUNC_ADD_NON_SAMPLE_EVENT_CLASS(exit,
1264 __NON_SAMPLE_ADD_FIELD(u32, pid);
1265 __NON_SAMPLE_ADD_FIELD(u32, ppid);
1266 __NON_SAMPLE_ADD_FIELD(u32, tid);
1267 __NON_SAMPLE_ADD_FIELD(u32, ptid);
1268 __NON_SAMPLE_ADD_FIELD(u64, time);
1269)
1270
1271__FUNC_ADD_NON_SAMPLE_EVENT_CLASS(mmap,
1272 __NON_SAMPLE_ADD_FIELD(u32, pid);
1273 __NON_SAMPLE_ADD_FIELD(u32, tid);
1274 __NON_SAMPLE_ADD_FIELD(u64_hex, start);
1275 __NON_SAMPLE_ADD_FIELD(string, filename);
1276)
1277
1278__FUNC_ADD_NON_SAMPLE_EVENT_CLASS(mmap2,
1279 __NON_SAMPLE_ADD_FIELD(u32, pid);
1280 __NON_SAMPLE_ADD_FIELD(u32, tid);
1281 __NON_SAMPLE_ADD_FIELD(u64_hex, start);
1282 __NON_SAMPLE_ADD_FIELD(string, filename);
1283)
1284#undef __NON_SAMPLE_ADD_FIELD
1285#undef __FUNC_ADD_NON_SAMPLE_EVENT_CLASS
1286
1287static int setup_non_sample_events(struct ctf_writer *cw,
1288 struct perf_session *session __maybe_unused)
1289{
1290 int ret;
1291
1292 ret = add_comm_event(cw);
1293 if (ret)
1294 return ret;
1295 ret = add_exit_event(cw);
1296 if (ret)
1297 return ret;
1298 ret = add_fork_event(cw);
1299 if (ret)
1300 return ret;
1301 ret = add_mmap_event(cw);
1302 if (ret)
1303 return ret;
1304 ret = add_mmap2_event(cw);
1305 if (ret)
1306 return ret;
1307 return 0;
1308}
1309
1310static void cleanup_events(struct perf_session *session)
1311{
1312 struct evlist *evlist = session->evlist;
1313 struct evsel *evsel;
1314
1315 evlist__for_each_entry(evlist, evsel) {
1316 struct evsel_priv *priv;
1317
1318 priv = evsel->priv;
1319 bt_ctf_event_class_put(priv->event_class);
1320 zfree(&evsel->priv);
1321 }
1322
1323 evlist__delete(evlist);
1324 session->evlist = NULL;
1325}
1326
1327static int setup_streams(struct ctf_writer *cw, struct perf_session *session)
1328{
1329 struct ctf_stream **stream;
1330 struct perf_header *ph = &session->header;
1331 int ncpus;
1332
1333 /*
1334 * Try to get the number of cpus used in the data file,
1335 * if not present fallback to the MAX_CPUS.
1336 */
1337 ncpus = ph->env.nr_cpus_avail ?: MAX_CPUS;
1338
1339 stream = zalloc(sizeof(*stream) * ncpus);
1340 if (!stream) {
1341 pr_err("Failed to allocate streams.\n");
1342 return -ENOMEM;
1343 }
1344
1345 cw->stream = stream;
1346 cw->stream_cnt = ncpus;
1347 return 0;
1348}
1349
1350static void free_streams(struct ctf_writer *cw)
1351{
1352 int cpu;
1353
1354 for (cpu = 0; cpu < cw->stream_cnt; cpu++)
1355 ctf_stream__delete(cw->stream[cpu]);
1356
1357 zfree(&cw->stream);
1358}
1359
1360static int ctf_writer__setup_env(struct ctf_writer *cw,
1361 struct perf_session *session)
1362{
1363 struct perf_header *header = &session->header;
1364 struct bt_ctf_writer *writer = cw->writer;
1365
1366#define ADD(__n, __v) \
1367do { \
1368 if (bt_ctf_writer_add_environment_field(writer, __n, __v)) \
1369 return -1; \
1370} while (0)
1371
1372 ADD("host", header->env.hostname);
1373 ADD("sysname", "Linux");
1374 ADD("release", header->env.os_release);
1375 ADD("version", header->env.version);
1376 ADD("machine", header->env.arch);
1377 ADD("domain", "kernel");
1378 ADD("tracer_name", "perf");
1379
1380#undef ADD
1381 return 0;
1382}
1383
1384static int ctf_writer__setup_clock(struct ctf_writer *cw)
1385{
1386 struct bt_ctf_clock *clock = cw->clock;
1387
1388 bt_ctf_clock_set_description(clock, "perf clock");
1389
1390#define SET(__n, __v) \
1391do { \
1392 if (bt_ctf_clock_set_##__n(clock, __v)) \
1393 return -1; \
1394} while (0)
1395
1396 SET(frequency, 1000000000);
1397 SET(offset_s, 0);
1398 SET(offset, 0);
1399 SET(precision, 10);
1400 SET(is_absolute, 0);
1401
1402#undef SET
1403 return 0;
1404}
1405
1406static struct bt_ctf_field_type *create_int_type(int size, bool sign, bool hex)
1407{
1408 struct bt_ctf_field_type *type;
1409
1410 type = bt_ctf_field_type_integer_create(size);
1411 if (!type)
1412 return NULL;
1413
1414 if (sign &&
1415 bt_ctf_field_type_integer_set_signed(type, 1))
1416 goto err;
1417
1418 if (hex &&
1419 bt_ctf_field_type_integer_set_base(type, BT_CTF_INTEGER_BASE_HEXADECIMAL))
1420 goto err;
1421
1422#if __BYTE_ORDER == __BIG_ENDIAN
1423 bt_ctf_field_type_set_byte_order(type, BT_CTF_BYTE_ORDER_BIG_ENDIAN);
1424#else
1425 bt_ctf_field_type_set_byte_order(type, BT_CTF_BYTE_ORDER_LITTLE_ENDIAN);
1426#endif
1427
1428 pr2("Created type: INTEGER %d-bit %ssigned %s\n",
1429 size, sign ? "un" : "", hex ? "hex" : "");
1430 return type;
1431
1432err:
1433 bt_ctf_field_type_put(type);
1434 return NULL;
1435}
1436
1437static void ctf_writer__cleanup_data(struct ctf_writer *cw)
1438{
1439 unsigned int i;
1440
1441 for (i = 0; i < ARRAY_SIZE(cw->data.array); i++)
1442 bt_ctf_field_type_put(cw->data.array[i]);
1443}
1444
1445static int ctf_writer__init_data(struct ctf_writer *cw)
1446{
1447#define CREATE_INT_TYPE(type, size, sign, hex) \
1448do { \
1449 (type) = create_int_type(size, sign, hex); \
1450 if (!(type)) \
1451 goto err; \
1452} while (0)
1453
1454 CREATE_INT_TYPE(cw->data.s64, 64, true, false);
1455 CREATE_INT_TYPE(cw->data.u64, 64, false, false);
1456 CREATE_INT_TYPE(cw->data.s32, 32, true, false);
1457 CREATE_INT_TYPE(cw->data.u32, 32, false, false);
1458 CREATE_INT_TYPE(cw->data.u32_hex, 32, false, true);
1459 CREATE_INT_TYPE(cw->data.u64_hex, 64, false, true);
1460
1461 cw->data.string = bt_ctf_field_type_string_create();
1462 if (cw->data.string)
1463 return 0;
1464
1465err:
1466 ctf_writer__cleanup_data(cw);
1467 pr_err("Failed to create data types.\n");
1468 return -1;
1469}
1470
1471static void ctf_writer__cleanup(struct ctf_writer *cw)
1472{
1473 ctf_writer__cleanup_data(cw);
1474
1475 bt_ctf_clock_put(cw->clock);
1476 free_streams(cw);
1477 bt_ctf_stream_class_put(cw->stream_class);
1478 bt_ctf_writer_put(cw->writer);
1479
1480 /* and NULL all the pointers */
1481 memset(cw, 0, sizeof(*cw));
1482}
1483
1484static int ctf_writer__init(struct ctf_writer *cw, const char *path)
1485{
1486 struct bt_ctf_writer *writer;
1487 struct bt_ctf_stream_class *stream_class;
1488 struct bt_ctf_clock *clock;
1489 struct bt_ctf_field_type *pkt_ctx_type;
1490 int ret;
1491
1492 /* CTF writer */
1493 writer = bt_ctf_writer_create(path);
1494 if (!writer)
1495 goto err;
1496
1497 cw->writer = writer;
1498
1499 /* CTF clock */
1500 clock = bt_ctf_clock_create("perf_clock");
1501 if (!clock) {
1502 pr("Failed to create CTF clock.\n");
1503 goto err_cleanup;
1504 }
1505
1506 cw->clock = clock;
1507
1508 if (ctf_writer__setup_clock(cw)) {
1509 pr("Failed to setup CTF clock.\n");
1510 goto err_cleanup;
1511 }
1512
1513 /* CTF stream class */
1514 stream_class = bt_ctf_stream_class_create("perf_stream");
1515 if (!stream_class) {
1516 pr("Failed to create CTF stream class.\n");
1517 goto err_cleanup;
1518 }
1519
1520 cw->stream_class = stream_class;
1521
1522 /* CTF clock stream setup */
1523 if (bt_ctf_stream_class_set_clock(stream_class, clock)) {
1524 pr("Failed to assign CTF clock to stream class.\n");
1525 goto err_cleanup;
1526 }
1527
1528 if (ctf_writer__init_data(cw))
1529 goto err_cleanup;
1530
1531 /* Add cpu_id for packet context */
1532 pkt_ctx_type = bt_ctf_stream_class_get_packet_context_type(stream_class);
1533 if (!pkt_ctx_type)
1534 goto err_cleanup;
1535
1536 ret = bt_ctf_field_type_structure_add_field(pkt_ctx_type, cw->data.u32, "cpu_id");
1537 bt_ctf_field_type_put(pkt_ctx_type);
1538 if (ret)
1539 goto err_cleanup;
1540
1541 /* CTF clock writer setup */
1542 if (bt_ctf_writer_add_clock(writer, clock)) {
1543 pr("Failed to assign CTF clock to writer.\n");
1544 goto err_cleanup;
1545 }
1546
1547 return 0;
1548
1549err_cleanup:
1550 ctf_writer__cleanup(cw);
1551err:
1552 pr_err("Failed to setup CTF writer.\n");
1553 return -1;
1554}
1555
1556static int ctf_writer__flush_streams(struct ctf_writer *cw)
1557{
1558 int cpu, ret = 0;
1559
1560 for (cpu = 0; cpu < cw->stream_cnt && !ret; cpu++)
1561 ret = ctf_stream__flush(cw->stream[cpu]);
1562
1563 return ret;
1564}
1565
1566static int convert__config(const char *var, const char *value, void *cb)
1567{
1568 struct convert *c = cb;
1569
1570 if (!strcmp(var, "convert.queue-size"))
1571 return perf_config_u64(&c->queue_size, var, value);
1572
1573 return 0;
1574}
1575
1576int bt_convert__perf2ctf(const char *input, const char *path,
1577 struct perf_data_convert_opts *opts)
1578{
1579 struct perf_session *session;
1580 struct perf_data data = {
1581 .path = input,
1582 .mode = PERF_DATA_MODE_READ,
1583 .force = opts->force,
1584 };
1585 struct convert c = {
1586 .tool = {
1587 .sample = process_sample_event,
1588 .mmap = perf_event__process_mmap,
1589 .mmap2 = perf_event__process_mmap2,
1590 .comm = perf_event__process_comm,
1591 .exit = perf_event__process_exit,
1592 .fork = perf_event__process_fork,
1593 .lost = perf_event__process_lost,
1594 .tracing_data = perf_event__process_tracing_data,
1595 .build_id = perf_event__process_build_id,
1596 .namespaces = perf_event__process_namespaces,
1597 .ordered_events = true,
1598 .ordering_requires_timestamps = true,
1599 },
1600 };
1601 struct ctf_writer *cw = &c.writer;
1602 int err;
1603
1604 if (opts->all) {
1605 c.tool.comm = process_comm_event;
1606 c.tool.exit = process_exit_event;
1607 c.tool.fork = process_fork_event;
1608 c.tool.mmap = process_mmap_event;
1609 c.tool.mmap2 = process_mmap2_event;
1610 }
1611
1612 err = perf_config(convert__config, &c);
1613 if (err)
1614 return err;
1615
1616 /* CTF writer */
1617 if (ctf_writer__init(cw, path))
1618 return -1;
1619
1620 err = -1;
1621 /* perf.data session */
1622 session = perf_session__new(&data, 0, &c.tool);
1623 if (IS_ERR(session)) {
1624 err = PTR_ERR(session);
1625 goto free_writer;
1626 }
1627
1628 if (c.queue_size) {
1629 ordered_events__set_alloc_size(&session->ordered_events,
1630 c.queue_size);
1631 }
1632
1633 /* CTF writer env/clock setup */
1634 if (ctf_writer__setup_env(cw, session))
1635 goto free_session;
1636
1637 /* CTF events setup */
1638 if (setup_events(cw, session))
1639 goto free_session;
1640
1641 if (opts->all && setup_non_sample_events(cw, session))
1642 goto free_session;
1643
1644 if (setup_streams(cw, session))
1645 goto free_session;
1646
1647 err = perf_session__process_events(session);
1648 if (!err)
1649 err = ctf_writer__flush_streams(cw);
1650 else
1651 pr_err("Error during conversion.\n");
1652
1653 fprintf(stderr,
1654 "[ perf data convert: Converted '%s' into CTF data '%s' ]\n",
1655 data.path, path);
1656
1657 fprintf(stderr,
1658 "[ perf data convert: Converted and wrote %.3f MB (%" PRIu64 " samples",
1659 (double) c.events_size / 1024.0 / 1024.0,
1660 c.events_count);
1661
1662 if (!c.non_sample_count)
1663 fprintf(stderr, ") ]\n");
1664 else
1665 fprintf(stderr, ", %" PRIu64 " non-samples) ]\n", c.non_sample_count);
1666
1667 cleanup_events(session);
1668 perf_session__delete(session);
1669 ctf_writer__cleanup(cw);
1670
1671 return err;
1672
1673free_session:
1674 perf_session__delete(session);
1675free_writer:
1676 ctf_writer__cleanup(cw);
1677 pr_err("Error during conversion setup.\n");
1678 return err;
1679}
1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * CTF writing support via babeltrace.
4 *
5 * Copyright (C) 2014, Jiri Olsa <jolsa@redhat.com>
6 * Copyright (C) 2014, Sebastian Andrzej Siewior <bigeasy@linutronix.de>
7 */
8
9#include <errno.h>
10#include <inttypes.h>
11#include <linux/compiler.h>
12#include <linux/kernel.h>
13#include <linux/zalloc.h>
14#include <babeltrace/ctf-writer/writer.h>
15#include <babeltrace/ctf-writer/clock.h>
16#include <babeltrace/ctf-writer/stream.h>
17#include <babeltrace/ctf-writer/event.h>
18#include <babeltrace/ctf-writer/event-types.h>
19#include <babeltrace/ctf-writer/event-fields.h>
20#include <babeltrace/ctf-ir/utils.h>
21#include <babeltrace/ctf/events.h>
22#include "asm/bug.h"
23#include "data-convert.h"
24#include "session.h"
25#include "debug.h"
26#include "tool.h"
27#include "evlist.h"
28#include "evsel.h"
29#include "machine.h"
30#include "config.h"
31#include <linux/ctype.h>
32#include <linux/err.h>
33#include <linux/time64.h>
34#include "util.h"
35#include "clockid.h"
36#include "util/sample.h"
37
38#ifdef HAVE_LIBTRACEEVENT
39#include <traceevent/event-parse.h>
40#endif
41
42#define pr_N(n, fmt, ...) \
43 eprintf(n, debug_data_convert, fmt, ##__VA_ARGS__)
44
45#define pr(fmt, ...) pr_N(1, pr_fmt(fmt), ##__VA_ARGS__)
46#define pr2(fmt, ...) pr_N(2, pr_fmt(fmt), ##__VA_ARGS__)
47
48#define pr_time2(t, fmt, ...) pr_time_N(2, debug_data_convert, t, pr_fmt(fmt), ##__VA_ARGS__)
49
50struct evsel_priv {
51 struct bt_ctf_event_class *event_class;
52};
53
54#define MAX_CPUS 4096
55
56struct ctf_stream {
57 struct bt_ctf_stream *stream;
58 int cpu;
59 u32 count;
60};
61
62struct ctf_writer {
63 /* writer primitives */
64 struct bt_ctf_writer *writer;
65 struct ctf_stream **stream;
66 int stream_cnt;
67 struct bt_ctf_stream_class *stream_class;
68 struct bt_ctf_clock *clock;
69
70 /* data types */
71 union {
72 struct {
73 struct bt_ctf_field_type *s64;
74 struct bt_ctf_field_type *u64;
75 struct bt_ctf_field_type *s32;
76 struct bt_ctf_field_type *u32;
77 struct bt_ctf_field_type *string;
78 struct bt_ctf_field_type *u32_hex;
79 struct bt_ctf_field_type *u64_hex;
80 };
81 struct bt_ctf_field_type *array[6];
82 } data;
83 struct bt_ctf_event_class *comm_class;
84 struct bt_ctf_event_class *exit_class;
85 struct bt_ctf_event_class *fork_class;
86 struct bt_ctf_event_class *mmap_class;
87 struct bt_ctf_event_class *mmap2_class;
88};
89
90struct convert {
91 struct perf_tool tool;
92 struct ctf_writer writer;
93
94 u64 events_size;
95 u64 events_count;
96 u64 non_sample_count;
97
98 /* Ordered events configured queue size. */
99 u64 queue_size;
100};
101
102static int value_set(struct bt_ctf_field_type *type,
103 struct bt_ctf_event *event,
104 const char *name, u64 val)
105{
106 struct bt_ctf_field *field;
107 bool sign = bt_ctf_field_type_integer_get_signed(type);
108 int ret;
109
110 field = bt_ctf_field_create(type);
111 if (!field) {
112 pr_err("failed to create a field %s\n", name);
113 return -1;
114 }
115
116 if (sign) {
117 ret = bt_ctf_field_signed_integer_set_value(field, val);
118 if (ret) {
119 pr_err("failed to set field value %s\n", name);
120 goto err;
121 }
122 } else {
123 ret = bt_ctf_field_unsigned_integer_set_value(field, val);
124 if (ret) {
125 pr_err("failed to set field value %s\n", name);
126 goto err;
127 }
128 }
129
130 ret = bt_ctf_event_set_payload(event, name, field);
131 if (ret) {
132 pr_err("failed to set payload %s\n", name);
133 goto err;
134 }
135
136 pr2(" SET [%s = %" PRIu64 "]\n", name, val);
137
138err:
139 bt_ctf_field_put(field);
140 return ret;
141}
142
143#define __FUNC_VALUE_SET(_name, _val_type) \
144static __maybe_unused int value_set_##_name(struct ctf_writer *cw, \
145 struct bt_ctf_event *event, \
146 const char *name, \
147 _val_type val) \
148{ \
149 struct bt_ctf_field_type *type = cw->data._name; \
150 return value_set(type, event, name, (u64) val); \
151}
152
153#define FUNC_VALUE_SET(_name) __FUNC_VALUE_SET(_name, _name)
154
155FUNC_VALUE_SET(s32)
156FUNC_VALUE_SET(u32)
157FUNC_VALUE_SET(s64)
158FUNC_VALUE_SET(u64)
159__FUNC_VALUE_SET(u64_hex, u64)
160
161static int string_set_value(struct bt_ctf_field *field, const char *string);
162static __maybe_unused int
163value_set_string(struct ctf_writer *cw, struct bt_ctf_event *event,
164 const char *name, const char *string)
165{
166 struct bt_ctf_field_type *type = cw->data.string;
167 struct bt_ctf_field *field;
168 int ret = 0;
169
170 field = bt_ctf_field_create(type);
171 if (!field) {
172 pr_err("failed to create a field %s\n", name);
173 return -1;
174 }
175
176 ret = string_set_value(field, string);
177 if (ret) {
178 pr_err("failed to set value %s\n", name);
179 goto err_put_field;
180 }
181
182 ret = bt_ctf_event_set_payload(event, name, field);
183 if (ret)
184 pr_err("failed to set payload %s\n", name);
185
186err_put_field:
187 bt_ctf_field_put(field);
188 return ret;
189}
190
191static struct bt_ctf_field_type*
192get_tracepoint_field_type(struct ctf_writer *cw, struct tep_format_field *field)
193{
194 unsigned long flags = field->flags;
195
196 if (flags & TEP_FIELD_IS_STRING)
197 return cw->data.string;
198
199 if (!(flags & TEP_FIELD_IS_SIGNED)) {
200 /* unsigned long are mostly pointers */
201 if (flags & TEP_FIELD_IS_LONG || flags & TEP_FIELD_IS_POINTER)
202 return cw->data.u64_hex;
203 }
204
205 if (flags & TEP_FIELD_IS_SIGNED) {
206 if (field->size == 8)
207 return cw->data.s64;
208 else
209 return cw->data.s32;
210 }
211
212 if (field->size == 8)
213 return cw->data.u64;
214 else
215 return cw->data.u32;
216}
217
218static unsigned long long adjust_signedness(unsigned long long value_int, int size)
219{
220 unsigned long long value_mask;
221
222 /*
223 * value_mask = (1 << (size * 8 - 1)) - 1.
224 * Directly set value_mask for code readers.
225 */
226 switch (size) {
227 case 1:
228 value_mask = 0x7fULL;
229 break;
230 case 2:
231 value_mask = 0x7fffULL;
232 break;
233 case 4:
234 value_mask = 0x7fffffffULL;
235 break;
236 case 8:
237 /*
238 * For 64 bit value, return it self. There is no need
239 * to fill high bit.
240 */
241 /* Fall through */
242 default:
243 /* BUG! */
244 return value_int;
245 }
246
247 /* If it is a positive value, don't adjust. */
248 if ((value_int & (~0ULL - value_mask)) == 0)
249 return value_int;
250
251 /* Fill upper part of value_int with 1 to make it a negative long long. */
252 return (value_int & value_mask) | ~value_mask;
253}
254
255static int string_set_value(struct bt_ctf_field *field, const char *string)
256{
257 char *buffer = NULL;
258 size_t len = strlen(string), i, p;
259 int err;
260
261 for (i = p = 0; i < len; i++, p++) {
262 if (isprint(string[i])) {
263 if (!buffer)
264 continue;
265 buffer[p] = string[i];
266 } else {
267 char numstr[5];
268
269 snprintf(numstr, sizeof(numstr), "\\x%02x",
270 (unsigned int)(string[i]) & 0xff);
271
272 if (!buffer) {
273 buffer = zalloc(i + (len - i) * 4 + 2);
274 if (!buffer) {
275 pr_err("failed to set unprintable string '%s'\n", string);
276 return bt_ctf_field_string_set_value(field, "UNPRINTABLE-STRING");
277 }
278 if (i > 0)
279 strncpy(buffer, string, i);
280 }
281 memcpy(buffer + p, numstr, 4);
282 p += 3;
283 }
284 }
285
286 if (!buffer)
287 return bt_ctf_field_string_set_value(field, string);
288 err = bt_ctf_field_string_set_value(field, buffer);
289 free(buffer);
290 return err;
291}
292
293static int add_tracepoint_field_value(struct ctf_writer *cw,
294 struct bt_ctf_event_class *event_class,
295 struct bt_ctf_event *event,
296 struct perf_sample *sample,
297 struct tep_format_field *fmtf)
298{
299 struct bt_ctf_field_type *type;
300 struct bt_ctf_field *array_field;
301 struct bt_ctf_field *field;
302 const char *name = fmtf->name;
303 void *data = sample->raw_data;
304 unsigned long flags = fmtf->flags;
305 unsigned int n_items;
306 unsigned int i;
307 unsigned int offset;
308 unsigned int len;
309 int ret;
310
311 name = fmtf->alias;
312 offset = fmtf->offset;
313 len = fmtf->size;
314 if (flags & TEP_FIELD_IS_STRING)
315 flags &= ~TEP_FIELD_IS_ARRAY;
316
317 if (flags & TEP_FIELD_IS_DYNAMIC) {
318 unsigned long long tmp_val;
319
320 tmp_val = tep_read_number(fmtf->event->tep,
321 data + offset, len);
322 offset = tmp_val;
323 len = offset >> 16;
324 offset &= 0xffff;
325 if (tep_field_is_relative(flags))
326 offset += fmtf->offset + fmtf->size;
327 }
328
329 if (flags & TEP_FIELD_IS_ARRAY) {
330
331 type = bt_ctf_event_class_get_field_by_name(
332 event_class, name);
333 array_field = bt_ctf_field_create(type);
334 bt_ctf_field_type_put(type);
335 if (!array_field) {
336 pr_err("Failed to create array type %s\n", name);
337 return -1;
338 }
339
340 len = fmtf->size / fmtf->arraylen;
341 n_items = fmtf->arraylen;
342 } else {
343 n_items = 1;
344 array_field = NULL;
345 }
346
347 type = get_tracepoint_field_type(cw, fmtf);
348
349 for (i = 0; i < n_items; i++) {
350 if (flags & TEP_FIELD_IS_ARRAY)
351 field = bt_ctf_field_array_get_field(array_field, i);
352 else
353 field = bt_ctf_field_create(type);
354
355 if (!field) {
356 pr_err("failed to create a field %s\n", name);
357 return -1;
358 }
359
360 if (flags & TEP_FIELD_IS_STRING)
361 ret = string_set_value(field, data + offset + i * len);
362 else {
363 unsigned long long value_int;
364
365 value_int = tep_read_number(
366 fmtf->event->tep,
367 data + offset + i * len, len);
368
369 if (!(flags & TEP_FIELD_IS_SIGNED))
370 ret = bt_ctf_field_unsigned_integer_set_value(
371 field, value_int);
372 else
373 ret = bt_ctf_field_signed_integer_set_value(
374 field, adjust_signedness(value_int, len));
375 }
376
377 if (ret) {
378 pr_err("failed to set file value %s\n", name);
379 goto err_put_field;
380 }
381 if (!(flags & TEP_FIELD_IS_ARRAY)) {
382 ret = bt_ctf_event_set_payload(event, name, field);
383 if (ret) {
384 pr_err("failed to set payload %s\n", name);
385 goto err_put_field;
386 }
387 }
388 bt_ctf_field_put(field);
389 }
390 if (flags & TEP_FIELD_IS_ARRAY) {
391 ret = bt_ctf_event_set_payload(event, name, array_field);
392 if (ret) {
393 pr_err("Failed add payload array %s\n", name);
394 return -1;
395 }
396 bt_ctf_field_put(array_field);
397 }
398 return 0;
399
400err_put_field:
401 bt_ctf_field_put(field);
402 return -1;
403}
404
405static int add_tracepoint_fields_values(struct ctf_writer *cw,
406 struct bt_ctf_event_class *event_class,
407 struct bt_ctf_event *event,
408 struct tep_format_field *fields,
409 struct perf_sample *sample)
410{
411 struct tep_format_field *field;
412 int ret;
413
414 for (field = fields; field; field = field->next) {
415 ret = add_tracepoint_field_value(cw, event_class, event, sample,
416 field);
417 if (ret)
418 return -1;
419 }
420 return 0;
421}
422
423static int add_tracepoint_values(struct ctf_writer *cw,
424 struct bt_ctf_event_class *event_class,
425 struct bt_ctf_event *event,
426 struct evsel *evsel,
427 struct perf_sample *sample)
428{
429 struct tep_format_field *common_fields = evsel->tp_format->format.common_fields;
430 struct tep_format_field *fields = evsel->tp_format->format.fields;
431 int ret;
432
433 ret = add_tracepoint_fields_values(cw, event_class, event,
434 common_fields, sample);
435 if (!ret)
436 ret = add_tracepoint_fields_values(cw, event_class, event,
437 fields, sample);
438
439 return ret;
440}
441
442static int
443add_bpf_output_values(struct bt_ctf_event_class *event_class,
444 struct bt_ctf_event *event,
445 struct perf_sample *sample)
446{
447 struct bt_ctf_field_type *len_type, *seq_type;
448 struct bt_ctf_field *len_field, *seq_field;
449 unsigned int raw_size = sample->raw_size;
450 unsigned int nr_elements = raw_size / sizeof(u32);
451 unsigned int i;
452 int ret;
453
454 if (nr_elements * sizeof(u32) != raw_size)
455 pr_warning("Incorrect raw_size (%u) in bpf output event, skip %zu bytes\n",
456 raw_size, nr_elements * sizeof(u32) - raw_size);
457
458 len_type = bt_ctf_event_class_get_field_by_name(event_class, "raw_len");
459 len_field = bt_ctf_field_create(len_type);
460 if (!len_field) {
461 pr_err("failed to create 'raw_len' for bpf output event\n");
462 ret = -1;
463 goto put_len_type;
464 }
465
466 ret = bt_ctf_field_unsigned_integer_set_value(len_field, nr_elements);
467 if (ret) {
468 pr_err("failed to set field value for raw_len\n");
469 goto put_len_field;
470 }
471 ret = bt_ctf_event_set_payload(event, "raw_len", len_field);
472 if (ret) {
473 pr_err("failed to set payload to raw_len\n");
474 goto put_len_field;
475 }
476
477 seq_type = bt_ctf_event_class_get_field_by_name(event_class, "raw_data");
478 seq_field = bt_ctf_field_create(seq_type);
479 if (!seq_field) {
480 pr_err("failed to create 'raw_data' for bpf output event\n");
481 ret = -1;
482 goto put_seq_type;
483 }
484
485 ret = bt_ctf_field_sequence_set_length(seq_field, len_field);
486 if (ret) {
487 pr_err("failed to set length of 'raw_data'\n");
488 goto put_seq_field;
489 }
490
491 for (i = 0; i < nr_elements; i++) {
492 struct bt_ctf_field *elem_field =
493 bt_ctf_field_sequence_get_field(seq_field, i);
494
495 ret = bt_ctf_field_unsigned_integer_set_value(elem_field,
496 ((u32 *)(sample->raw_data))[i]);
497
498 bt_ctf_field_put(elem_field);
499 if (ret) {
500 pr_err("failed to set raw_data[%d]\n", i);
501 goto put_seq_field;
502 }
503 }
504
505 ret = bt_ctf_event_set_payload(event, "raw_data", seq_field);
506 if (ret)
507 pr_err("failed to set payload for raw_data\n");
508
509put_seq_field:
510 bt_ctf_field_put(seq_field);
511put_seq_type:
512 bt_ctf_field_type_put(seq_type);
513put_len_field:
514 bt_ctf_field_put(len_field);
515put_len_type:
516 bt_ctf_field_type_put(len_type);
517 return ret;
518}
519
520static int
521add_callchain_output_values(struct bt_ctf_event_class *event_class,
522 struct bt_ctf_event *event,
523 struct ip_callchain *callchain)
524{
525 struct bt_ctf_field_type *len_type, *seq_type;
526 struct bt_ctf_field *len_field, *seq_field;
527 unsigned int nr_elements = callchain->nr;
528 unsigned int i;
529 int ret;
530
531 len_type = bt_ctf_event_class_get_field_by_name(
532 event_class, "perf_callchain_size");
533 len_field = bt_ctf_field_create(len_type);
534 if (!len_field) {
535 pr_err("failed to create 'perf_callchain_size' for callchain output event\n");
536 ret = -1;
537 goto put_len_type;
538 }
539
540 ret = bt_ctf_field_unsigned_integer_set_value(len_field, nr_elements);
541 if (ret) {
542 pr_err("failed to set field value for perf_callchain_size\n");
543 goto put_len_field;
544 }
545 ret = bt_ctf_event_set_payload(event, "perf_callchain_size", len_field);
546 if (ret) {
547 pr_err("failed to set payload to perf_callchain_size\n");
548 goto put_len_field;
549 }
550
551 seq_type = bt_ctf_event_class_get_field_by_name(
552 event_class, "perf_callchain");
553 seq_field = bt_ctf_field_create(seq_type);
554 if (!seq_field) {
555 pr_err("failed to create 'perf_callchain' for callchain output event\n");
556 ret = -1;
557 goto put_seq_type;
558 }
559
560 ret = bt_ctf_field_sequence_set_length(seq_field, len_field);
561 if (ret) {
562 pr_err("failed to set length of 'perf_callchain'\n");
563 goto put_seq_field;
564 }
565
566 for (i = 0; i < nr_elements; i++) {
567 struct bt_ctf_field *elem_field =
568 bt_ctf_field_sequence_get_field(seq_field, i);
569
570 ret = bt_ctf_field_unsigned_integer_set_value(elem_field,
571 ((u64 *)(callchain->ips))[i]);
572
573 bt_ctf_field_put(elem_field);
574 if (ret) {
575 pr_err("failed to set callchain[%d]\n", i);
576 goto put_seq_field;
577 }
578 }
579
580 ret = bt_ctf_event_set_payload(event, "perf_callchain", seq_field);
581 if (ret)
582 pr_err("failed to set payload for raw_data\n");
583
584put_seq_field:
585 bt_ctf_field_put(seq_field);
586put_seq_type:
587 bt_ctf_field_type_put(seq_type);
588put_len_field:
589 bt_ctf_field_put(len_field);
590put_len_type:
591 bt_ctf_field_type_put(len_type);
592 return ret;
593}
594
595static int add_generic_values(struct ctf_writer *cw,
596 struct bt_ctf_event *event,
597 struct evsel *evsel,
598 struct perf_sample *sample)
599{
600 u64 type = evsel->core.attr.sample_type;
601 int ret;
602
603 /*
604 * missing:
605 * PERF_SAMPLE_TIME - not needed as we have it in
606 * ctf event header
607 * PERF_SAMPLE_READ - TODO
608 * PERF_SAMPLE_RAW - tracepoint fields are handled separately
609 * PERF_SAMPLE_BRANCH_STACK - TODO
610 * PERF_SAMPLE_REGS_USER - TODO
611 * PERF_SAMPLE_STACK_USER - TODO
612 */
613
614 if (type & PERF_SAMPLE_IP) {
615 ret = value_set_u64_hex(cw, event, "perf_ip", sample->ip);
616 if (ret)
617 return -1;
618 }
619
620 if (type & PERF_SAMPLE_TID) {
621 ret = value_set_s32(cw, event, "perf_tid", sample->tid);
622 if (ret)
623 return -1;
624
625 ret = value_set_s32(cw, event, "perf_pid", sample->pid);
626 if (ret)
627 return -1;
628 }
629
630 if ((type & PERF_SAMPLE_ID) ||
631 (type & PERF_SAMPLE_IDENTIFIER)) {
632 ret = value_set_u64(cw, event, "perf_id", sample->id);
633 if (ret)
634 return -1;
635 }
636
637 if (type & PERF_SAMPLE_STREAM_ID) {
638 ret = value_set_u64(cw, event, "perf_stream_id", sample->stream_id);
639 if (ret)
640 return -1;
641 }
642
643 if (type & PERF_SAMPLE_PERIOD) {
644 ret = value_set_u64(cw, event, "perf_period", sample->period);
645 if (ret)
646 return -1;
647 }
648
649 if (type & PERF_SAMPLE_WEIGHT) {
650 ret = value_set_u64(cw, event, "perf_weight", sample->weight);
651 if (ret)
652 return -1;
653 }
654
655 if (type & PERF_SAMPLE_DATA_SRC) {
656 ret = value_set_u64(cw, event, "perf_data_src",
657 sample->data_src);
658 if (ret)
659 return -1;
660 }
661
662 if (type & PERF_SAMPLE_TRANSACTION) {
663 ret = value_set_u64(cw, event, "perf_transaction",
664 sample->transaction);
665 if (ret)
666 return -1;
667 }
668
669 return 0;
670}
671
672static int ctf_stream__flush(struct ctf_stream *cs)
673{
674 int err = 0;
675
676 if (cs) {
677 err = bt_ctf_stream_flush(cs->stream);
678 if (err)
679 pr_err("CTF stream %d flush failed\n", cs->cpu);
680
681 pr("Flush stream for cpu %d (%u samples)\n",
682 cs->cpu, cs->count);
683
684 cs->count = 0;
685 }
686
687 return err;
688}
689
690static struct ctf_stream *ctf_stream__create(struct ctf_writer *cw, int cpu)
691{
692 struct ctf_stream *cs;
693 struct bt_ctf_field *pkt_ctx = NULL;
694 struct bt_ctf_field *cpu_field = NULL;
695 struct bt_ctf_stream *stream = NULL;
696 int ret;
697
698 cs = zalloc(sizeof(*cs));
699 if (!cs) {
700 pr_err("Failed to allocate ctf stream\n");
701 return NULL;
702 }
703
704 stream = bt_ctf_writer_create_stream(cw->writer, cw->stream_class);
705 if (!stream) {
706 pr_err("Failed to create CTF stream\n");
707 goto out;
708 }
709
710 pkt_ctx = bt_ctf_stream_get_packet_context(stream);
711 if (!pkt_ctx) {
712 pr_err("Failed to obtain packet context\n");
713 goto out;
714 }
715
716 cpu_field = bt_ctf_field_structure_get_field(pkt_ctx, "cpu_id");
717 bt_ctf_field_put(pkt_ctx);
718 if (!cpu_field) {
719 pr_err("Failed to obtain cpu field\n");
720 goto out;
721 }
722
723 ret = bt_ctf_field_unsigned_integer_set_value(cpu_field, (u32) cpu);
724 if (ret) {
725 pr_err("Failed to update CPU number\n");
726 goto out;
727 }
728
729 bt_ctf_field_put(cpu_field);
730
731 cs->cpu = cpu;
732 cs->stream = stream;
733 return cs;
734
735out:
736 if (cpu_field)
737 bt_ctf_field_put(cpu_field);
738 if (stream)
739 bt_ctf_stream_put(stream);
740
741 free(cs);
742 return NULL;
743}
744
745static void ctf_stream__delete(struct ctf_stream *cs)
746{
747 if (cs) {
748 bt_ctf_stream_put(cs->stream);
749 free(cs);
750 }
751}
752
753static struct ctf_stream *ctf_stream(struct ctf_writer *cw, int cpu)
754{
755 struct ctf_stream *cs = cw->stream[cpu];
756
757 if (!cs) {
758 cs = ctf_stream__create(cw, cpu);
759 cw->stream[cpu] = cs;
760 }
761
762 return cs;
763}
764
765static int get_sample_cpu(struct ctf_writer *cw, struct perf_sample *sample,
766 struct evsel *evsel)
767{
768 int cpu = 0;
769
770 if (evsel->core.attr.sample_type & PERF_SAMPLE_CPU)
771 cpu = sample->cpu;
772
773 if (cpu > cw->stream_cnt) {
774 pr_err("Event was recorded for CPU %d, limit is at %d.\n",
775 cpu, cw->stream_cnt);
776 cpu = 0;
777 }
778
779 return cpu;
780}
781
782#define STREAM_FLUSH_COUNT 100000
783
784/*
785 * Currently we have no other way to determine the
786 * time for the stream flush other than keep track
787 * of the number of events and check it against
788 * threshold.
789 */
790static bool is_flush_needed(struct ctf_stream *cs)
791{
792 return cs->count >= STREAM_FLUSH_COUNT;
793}
794
795static int process_sample_event(struct perf_tool *tool,
796 union perf_event *_event,
797 struct perf_sample *sample,
798 struct evsel *evsel,
799 struct machine *machine __maybe_unused)
800{
801 struct convert *c = container_of(tool, struct convert, tool);
802 struct evsel_priv *priv = evsel->priv;
803 struct ctf_writer *cw = &c->writer;
804 struct ctf_stream *cs;
805 struct bt_ctf_event_class *event_class;
806 struct bt_ctf_event *event;
807 int ret;
808 unsigned long type = evsel->core.attr.sample_type;
809
810 if (WARN_ONCE(!priv, "Failed to setup all events.\n"))
811 return 0;
812
813 event_class = priv->event_class;
814
815 /* update stats */
816 c->events_count++;
817 c->events_size += _event->header.size;
818
819 pr_time2(sample->time, "sample %" PRIu64 "\n", c->events_count);
820
821 event = bt_ctf_event_create(event_class);
822 if (!event) {
823 pr_err("Failed to create an CTF event\n");
824 return -1;
825 }
826
827 bt_ctf_clock_set_time(cw->clock, sample->time);
828
829 ret = add_generic_values(cw, event, evsel, sample);
830 if (ret)
831 return -1;
832
833 if (evsel->core.attr.type == PERF_TYPE_TRACEPOINT) {
834 ret = add_tracepoint_values(cw, event_class, event,
835 evsel, sample);
836 if (ret)
837 return -1;
838 }
839
840 if (type & PERF_SAMPLE_CALLCHAIN) {
841 ret = add_callchain_output_values(event_class,
842 event, sample->callchain);
843 if (ret)
844 return -1;
845 }
846
847 if (evsel__is_bpf_output(evsel)) {
848 ret = add_bpf_output_values(event_class, event, sample);
849 if (ret)
850 return -1;
851 }
852
853 cs = ctf_stream(cw, get_sample_cpu(cw, sample, evsel));
854 if (cs) {
855 if (is_flush_needed(cs))
856 ctf_stream__flush(cs);
857
858 cs->count++;
859 bt_ctf_stream_append_event(cs->stream, event);
860 }
861
862 bt_ctf_event_put(event);
863 return cs ? 0 : -1;
864}
865
866#define __NON_SAMPLE_SET_FIELD(_name, _type, _field) \
867do { \
868 ret = value_set_##_type(cw, event, #_field, _event->_name._field);\
869 if (ret) \
870 return -1; \
871} while(0)
872
873#define __FUNC_PROCESS_NON_SAMPLE(_name, body) \
874static int process_##_name##_event(struct perf_tool *tool, \
875 union perf_event *_event, \
876 struct perf_sample *sample, \
877 struct machine *machine) \
878{ \
879 struct convert *c = container_of(tool, struct convert, tool);\
880 struct ctf_writer *cw = &c->writer; \
881 struct bt_ctf_event_class *event_class = cw->_name##_class;\
882 struct bt_ctf_event *event; \
883 struct ctf_stream *cs; \
884 int ret; \
885 \
886 c->non_sample_count++; \
887 c->events_size += _event->header.size; \
888 event = bt_ctf_event_create(event_class); \
889 if (!event) { \
890 pr_err("Failed to create an CTF event\n"); \
891 return -1; \
892 } \
893 \
894 bt_ctf_clock_set_time(cw->clock, sample->time); \
895 body \
896 cs = ctf_stream(cw, 0); \
897 if (cs) { \
898 if (is_flush_needed(cs)) \
899 ctf_stream__flush(cs); \
900 \
901 cs->count++; \
902 bt_ctf_stream_append_event(cs->stream, event); \
903 } \
904 bt_ctf_event_put(event); \
905 \
906 return perf_event__process_##_name(tool, _event, sample, machine);\
907}
908
909__FUNC_PROCESS_NON_SAMPLE(comm,
910 __NON_SAMPLE_SET_FIELD(comm, u32, pid);
911 __NON_SAMPLE_SET_FIELD(comm, u32, tid);
912 __NON_SAMPLE_SET_FIELD(comm, string, comm);
913)
914__FUNC_PROCESS_NON_SAMPLE(fork,
915 __NON_SAMPLE_SET_FIELD(fork, u32, pid);
916 __NON_SAMPLE_SET_FIELD(fork, u32, ppid);
917 __NON_SAMPLE_SET_FIELD(fork, u32, tid);
918 __NON_SAMPLE_SET_FIELD(fork, u32, ptid);
919 __NON_SAMPLE_SET_FIELD(fork, u64, time);
920)
921
922__FUNC_PROCESS_NON_SAMPLE(exit,
923 __NON_SAMPLE_SET_FIELD(fork, u32, pid);
924 __NON_SAMPLE_SET_FIELD(fork, u32, ppid);
925 __NON_SAMPLE_SET_FIELD(fork, u32, tid);
926 __NON_SAMPLE_SET_FIELD(fork, u32, ptid);
927 __NON_SAMPLE_SET_FIELD(fork, u64, time);
928)
929__FUNC_PROCESS_NON_SAMPLE(mmap,
930 __NON_SAMPLE_SET_FIELD(mmap, u32, pid);
931 __NON_SAMPLE_SET_FIELD(mmap, u32, tid);
932 __NON_SAMPLE_SET_FIELD(mmap, u64_hex, start);
933 __NON_SAMPLE_SET_FIELD(mmap, string, filename);
934)
935__FUNC_PROCESS_NON_SAMPLE(mmap2,
936 __NON_SAMPLE_SET_FIELD(mmap2, u32, pid);
937 __NON_SAMPLE_SET_FIELD(mmap2, u32, tid);
938 __NON_SAMPLE_SET_FIELD(mmap2, u64_hex, start);
939 __NON_SAMPLE_SET_FIELD(mmap2, string, filename);
940)
941#undef __NON_SAMPLE_SET_FIELD
942#undef __FUNC_PROCESS_NON_SAMPLE
943
944/* If dup < 0, add a prefix. Else, add _dupl_X suffix. */
945static char *change_name(char *name, char *orig_name, int dup)
946{
947 char *new_name = NULL;
948 size_t len;
949
950 if (!name)
951 name = orig_name;
952
953 if (dup >= 10)
954 goto out;
955 /*
956 * Add '_' prefix to potential keywork. According to
957 * Mathieu Desnoyers (https://lore.kernel.org/lkml/1074266107.40857.1422045946295.JavaMail.zimbra@efficios.com),
958 * further CTF spec updating may require us to use '$'.
959 */
960 if (dup < 0)
961 len = strlen(name) + sizeof("_");
962 else
963 len = strlen(orig_name) + sizeof("_dupl_X");
964
965 new_name = malloc(len);
966 if (!new_name)
967 goto out;
968
969 if (dup < 0)
970 snprintf(new_name, len, "_%s", name);
971 else
972 snprintf(new_name, len, "%s_dupl_%d", orig_name, dup);
973
974out:
975 if (name != orig_name)
976 free(name);
977 return new_name;
978}
979
980static int event_class_add_field(struct bt_ctf_event_class *event_class,
981 struct bt_ctf_field_type *type,
982 struct tep_format_field *field)
983{
984 struct bt_ctf_field_type *t = NULL;
985 char *name;
986 int dup = 1;
987 int ret;
988
989 /* alias was already assigned */
990 if (field->alias != field->name)
991 return bt_ctf_event_class_add_field(event_class, type,
992 (char *)field->alias);
993
994 name = field->name;
995
996 /* If 'name' is a keywork, add prefix. */
997 if (bt_ctf_validate_identifier(name))
998 name = change_name(name, field->name, -1);
999
1000 if (!name) {
1001 pr_err("Failed to fix invalid identifier.");
1002 return -1;
1003 }
1004 while ((t = bt_ctf_event_class_get_field_by_name(event_class, name))) {
1005 bt_ctf_field_type_put(t);
1006 name = change_name(name, field->name, dup++);
1007 if (!name) {
1008 pr_err("Failed to create dup name for '%s'\n", field->name);
1009 return -1;
1010 }
1011 }
1012
1013 ret = bt_ctf_event_class_add_field(event_class, type, name);
1014 if (!ret)
1015 field->alias = name;
1016
1017 return ret;
1018}
1019
1020static int add_tracepoint_fields_types(struct ctf_writer *cw,
1021 struct tep_format_field *fields,
1022 struct bt_ctf_event_class *event_class)
1023{
1024 struct tep_format_field *field;
1025 int ret;
1026
1027 for (field = fields; field; field = field->next) {
1028 struct bt_ctf_field_type *type;
1029 unsigned long flags = field->flags;
1030
1031 pr2(" field '%s'\n", field->name);
1032
1033 type = get_tracepoint_field_type(cw, field);
1034 if (!type)
1035 return -1;
1036
1037 /*
1038 * A string is an array of chars. For this we use the string
1039 * type and don't care that it is an array. What we don't
1040 * support is an array of strings.
1041 */
1042 if (flags & TEP_FIELD_IS_STRING)
1043 flags &= ~TEP_FIELD_IS_ARRAY;
1044
1045 if (flags & TEP_FIELD_IS_ARRAY)
1046 type = bt_ctf_field_type_array_create(type, field->arraylen);
1047
1048 ret = event_class_add_field(event_class, type, field);
1049
1050 if (flags & TEP_FIELD_IS_ARRAY)
1051 bt_ctf_field_type_put(type);
1052
1053 if (ret) {
1054 pr_err("Failed to add field '%s': %d\n",
1055 field->name, ret);
1056 return -1;
1057 }
1058 }
1059
1060 return 0;
1061}
1062
1063static int add_tracepoint_types(struct ctf_writer *cw,
1064 struct evsel *evsel,
1065 struct bt_ctf_event_class *class)
1066{
1067 struct tep_format_field *common_fields = evsel->tp_format->format.common_fields;
1068 struct tep_format_field *fields = evsel->tp_format->format.fields;
1069 int ret;
1070
1071 ret = add_tracepoint_fields_types(cw, common_fields, class);
1072 if (!ret)
1073 ret = add_tracepoint_fields_types(cw, fields, class);
1074
1075 return ret;
1076}
1077
1078static int add_bpf_output_types(struct ctf_writer *cw,
1079 struct bt_ctf_event_class *class)
1080{
1081 struct bt_ctf_field_type *len_type = cw->data.u32;
1082 struct bt_ctf_field_type *seq_base_type = cw->data.u32_hex;
1083 struct bt_ctf_field_type *seq_type;
1084 int ret;
1085
1086 ret = bt_ctf_event_class_add_field(class, len_type, "raw_len");
1087 if (ret)
1088 return ret;
1089
1090 seq_type = bt_ctf_field_type_sequence_create(seq_base_type, "raw_len");
1091 if (!seq_type)
1092 return -1;
1093
1094 return bt_ctf_event_class_add_field(class, seq_type, "raw_data");
1095}
1096
1097static int add_generic_types(struct ctf_writer *cw, struct evsel *evsel,
1098 struct bt_ctf_event_class *event_class)
1099{
1100 u64 type = evsel->core.attr.sample_type;
1101
1102 /*
1103 * missing:
1104 * PERF_SAMPLE_TIME - not needed as we have it in
1105 * ctf event header
1106 * PERF_SAMPLE_READ - TODO
1107 * PERF_SAMPLE_CALLCHAIN - TODO
1108 * PERF_SAMPLE_RAW - tracepoint fields and BPF output
1109 * are handled separately
1110 * PERF_SAMPLE_BRANCH_STACK - TODO
1111 * PERF_SAMPLE_REGS_USER - TODO
1112 * PERF_SAMPLE_STACK_USER - TODO
1113 */
1114
1115#define ADD_FIELD(cl, t, n) \
1116 do { \
1117 pr2(" field '%s'\n", n); \
1118 if (bt_ctf_event_class_add_field(cl, t, n)) { \
1119 pr_err("Failed to add field '%s';\n", n); \
1120 return -1; \
1121 } \
1122 } while (0)
1123
1124 if (type & PERF_SAMPLE_IP)
1125 ADD_FIELD(event_class, cw->data.u64_hex, "perf_ip");
1126
1127 if (type & PERF_SAMPLE_TID) {
1128 ADD_FIELD(event_class, cw->data.s32, "perf_tid");
1129 ADD_FIELD(event_class, cw->data.s32, "perf_pid");
1130 }
1131
1132 if ((type & PERF_SAMPLE_ID) ||
1133 (type & PERF_SAMPLE_IDENTIFIER))
1134 ADD_FIELD(event_class, cw->data.u64, "perf_id");
1135
1136 if (type & PERF_SAMPLE_STREAM_ID)
1137 ADD_FIELD(event_class, cw->data.u64, "perf_stream_id");
1138
1139 if (type & PERF_SAMPLE_PERIOD)
1140 ADD_FIELD(event_class, cw->data.u64, "perf_period");
1141
1142 if (type & PERF_SAMPLE_WEIGHT)
1143 ADD_FIELD(event_class, cw->data.u64, "perf_weight");
1144
1145 if (type & PERF_SAMPLE_DATA_SRC)
1146 ADD_FIELD(event_class, cw->data.u64, "perf_data_src");
1147
1148 if (type & PERF_SAMPLE_TRANSACTION)
1149 ADD_FIELD(event_class, cw->data.u64, "perf_transaction");
1150
1151 if (type & PERF_SAMPLE_CALLCHAIN) {
1152 ADD_FIELD(event_class, cw->data.u32, "perf_callchain_size");
1153 ADD_FIELD(event_class,
1154 bt_ctf_field_type_sequence_create(
1155 cw->data.u64_hex, "perf_callchain_size"),
1156 "perf_callchain");
1157 }
1158
1159#undef ADD_FIELD
1160 return 0;
1161}
1162
1163static int add_event(struct ctf_writer *cw, struct evsel *evsel)
1164{
1165 struct bt_ctf_event_class *event_class;
1166 struct evsel_priv *priv;
1167 const char *name = evsel__name(evsel);
1168 int ret;
1169
1170 pr("Adding event '%s' (type %d)\n", name, evsel->core.attr.type);
1171
1172 event_class = bt_ctf_event_class_create(name);
1173 if (!event_class)
1174 return -1;
1175
1176 ret = add_generic_types(cw, evsel, event_class);
1177 if (ret)
1178 goto err;
1179
1180 if (evsel->core.attr.type == PERF_TYPE_TRACEPOINT) {
1181 ret = add_tracepoint_types(cw, evsel, event_class);
1182 if (ret)
1183 goto err;
1184 }
1185
1186 if (evsel__is_bpf_output(evsel)) {
1187 ret = add_bpf_output_types(cw, event_class);
1188 if (ret)
1189 goto err;
1190 }
1191
1192 ret = bt_ctf_stream_class_add_event_class(cw->stream_class, event_class);
1193 if (ret) {
1194 pr("Failed to add event class into stream.\n");
1195 goto err;
1196 }
1197
1198 priv = malloc(sizeof(*priv));
1199 if (!priv)
1200 goto err;
1201
1202 priv->event_class = event_class;
1203 evsel->priv = priv;
1204 return 0;
1205
1206err:
1207 bt_ctf_event_class_put(event_class);
1208 pr_err("Failed to add event '%s'.\n", name);
1209 return -1;
1210}
1211
1212static int setup_events(struct ctf_writer *cw, struct perf_session *session)
1213{
1214 struct evlist *evlist = session->evlist;
1215 struct evsel *evsel;
1216 int ret;
1217
1218 evlist__for_each_entry(evlist, evsel) {
1219 ret = add_event(cw, evsel);
1220 if (ret)
1221 return ret;
1222 }
1223 return 0;
1224}
1225
1226#define __NON_SAMPLE_ADD_FIELD(t, n) \
1227 do { \
1228 pr2(" field '%s'\n", #n); \
1229 if (bt_ctf_event_class_add_field(event_class, cw->data.t, #n)) {\
1230 pr_err("Failed to add field '%s';\n", #n);\
1231 return -1; \
1232 } \
1233 } while(0)
1234
1235#define __FUNC_ADD_NON_SAMPLE_EVENT_CLASS(_name, body) \
1236static int add_##_name##_event(struct ctf_writer *cw) \
1237{ \
1238 struct bt_ctf_event_class *event_class; \
1239 int ret; \
1240 \
1241 pr("Adding "#_name" event\n"); \
1242 event_class = bt_ctf_event_class_create("perf_" #_name);\
1243 if (!event_class) \
1244 return -1; \
1245 body \
1246 \
1247 ret = bt_ctf_stream_class_add_event_class(cw->stream_class, event_class);\
1248 if (ret) { \
1249 pr("Failed to add event class '"#_name"' into stream.\n");\
1250 return ret; \
1251 } \
1252 \
1253 cw->_name##_class = event_class; \
1254 bt_ctf_event_class_put(event_class); \
1255 return 0; \
1256}
1257
1258__FUNC_ADD_NON_SAMPLE_EVENT_CLASS(comm,
1259 __NON_SAMPLE_ADD_FIELD(u32, pid);
1260 __NON_SAMPLE_ADD_FIELD(u32, tid);
1261 __NON_SAMPLE_ADD_FIELD(string, comm);
1262)
1263
1264__FUNC_ADD_NON_SAMPLE_EVENT_CLASS(fork,
1265 __NON_SAMPLE_ADD_FIELD(u32, pid);
1266 __NON_SAMPLE_ADD_FIELD(u32, ppid);
1267 __NON_SAMPLE_ADD_FIELD(u32, tid);
1268 __NON_SAMPLE_ADD_FIELD(u32, ptid);
1269 __NON_SAMPLE_ADD_FIELD(u64, time);
1270)
1271
1272__FUNC_ADD_NON_SAMPLE_EVENT_CLASS(exit,
1273 __NON_SAMPLE_ADD_FIELD(u32, pid);
1274 __NON_SAMPLE_ADD_FIELD(u32, ppid);
1275 __NON_SAMPLE_ADD_FIELD(u32, tid);
1276 __NON_SAMPLE_ADD_FIELD(u32, ptid);
1277 __NON_SAMPLE_ADD_FIELD(u64, time);
1278)
1279
1280__FUNC_ADD_NON_SAMPLE_EVENT_CLASS(mmap,
1281 __NON_SAMPLE_ADD_FIELD(u32, pid);
1282 __NON_SAMPLE_ADD_FIELD(u32, tid);
1283 __NON_SAMPLE_ADD_FIELD(u64_hex, start);
1284 __NON_SAMPLE_ADD_FIELD(string, filename);
1285)
1286
1287__FUNC_ADD_NON_SAMPLE_EVENT_CLASS(mmap2,
1288 __NON_SAMPLE_ADD_FIELD(u32, pid);
1289 __NON_SAMPLE_ADD_FIELD(u32, tid);
1290 __NON_SAMPLE_ADD_FIELD(u64_hex, start);
1291 __NON_SAMPLE_ADD_FIELD(string, filename);
1292)
1293#undef __NON_SAMPLE_ADD_FIELD
1294#undef __FUNC_ADD_NON_SAMPLE_EVENT_CLASS
1295
1296static int setup_non_sample_events(struct ctf_writer *cw,
1297 struct perf_session *session __maybe_unused)
1298{
1299 int ret;
1300
1301 ret = add_comm_event(cw);
1302 if (ret)
1303 return ret;
1304 ret = add_exit_event(cw);
1305 if (ret)
1306 return ret;
1307 ret = add_fork_event(cw);
1308 if (ret)
1309 return ret;
1310 ret = add_mmap_event(cw);
1311 if (ret)
1312 return ret;
1313 ret = add_mmap2_event(cw);
1314 if (ret)
1315 return ret;
1316 return 0;
1317}
1318
1319static void cleanup_events(struct perf_session *session)
1320{
1321 struct evlist *evlist = session->evlist;
1322 struct evsel *evsel;
1323
1324 evlist__for_each_entry(evlist, evsel) {
1325 struct evsel_priv *priv;
1326
1327 priv = evsel->priv;
1328 bt_ctf_event_class_put(priv->event_class);
1329 zfree(&evsel->priv);
1330 }
1331
1332 evlist__delete(evlist);
1333 session->evlist = NULL;
1334}
1335
1336static int setup_streams(struct ctf_writer *cw, struct perf_session *session)
1337{
1338 struct ctf_stream **stream;
1339 struct perf_header *ph = &session->header;
1340 int ncpus;
1341
1342 /*
1343 * Try to get the number of cpus used in the data file,
1344 * if not present fallback to the MAX_CPUS.
1345 */
1346 ncpus = ph->env.nr_cpus_avail ?: MAX_CPUS;
1347
1348 stream = zalloc(sizeof(*stream) * ncpus);
1349 if (!stream) {
1350 pr_err("Failed to allocate streams.\n");
1351 return -ENOMEM;
1352 }
1353
1354 cw->stream = stream;
1355 cw->stream_cnt = ncpus;
1356 return 0;
1357}
1358
1359static void free_streams(struct ctf_writer *cw)
1360{
1361 int cpu;
1362
1363 for (cpu = 0; cpu < cw->stream_cnt; cpu++)
1364 ctf_stream__delete(cw->stream[cpu]);
1365
1366 zfree(&cw->stream);
1367}
1368
1369static int ctf_writer__setup_env(struct ctf_writer *cw,
1370 struct perf_session *session)
1371{
1372 struct perf_header *header = &session->header;
1373 struct bt_ctf_writer *writer = cw->writer;
1374
1375#define ADD(__n, __v) \
1376do { \
1377 if (bt_ctf_writer_add_environment_field(writer, __n, __v)) \
1378 return -1; \
1379} while (0)
1380
1381 ADD("host", header->env.hostname);
1382 ADD("sysname", "Linux");
1383 ADD("release", header->env.os_release);
1384 ADD("version", header->env.version);
1385 ADD("machine", header->env.arch);
1386 ADD("domain", "kernel");
1387 ADD("tracer_name", "perf");
1388
1389#undef ADD
1390 return 0;
1391}
1392
1393static int ctf_writer__setup_clock(struct ctf_writer *cw,
1394 struct perf_session *session,
1395 bool tod)
1396{
1397 struct bt_ctf_clock *clock = cw->clock;
1398 const char *desc = "perf clock";
1399 int64_t offset = 0;
1400
1401 if (tod) {
1402 struct perf_env *env = &session->header.env;
1403
1404 if (!env->clock.enabled) {
1405 pr_err("Can't provide --tod time, missing clock data. "
1406 "Please record with -k/--clockid option.\n");
1407 return -1;
1408 }
1409
1410 desc = clockid_name(env->clock.clockid);
1411 offset = env->clock.tod_ns - env->clock.clockid_ns;
1412 }
1413
1414#define SET(__n, __v) \
1415do { \
1416 if (bt_ctf_clock_set_##__n(clock, __v)) \
1417 return -1; \
1418} while (0)
1419
1420 SET(frequency, 1000000000);
1421 SET(offset, offset);
1422 SET(description, desc);
1423 SET(precision, 10);
1424 SET(is_absolute, 0);
1425
1426#undef SET
1427 return 0;
1428}
1429
1430static struct bt_ctf_field_type *create_int_type(int size, bool sign, bool hex)
1431{
1432 struct bt_ctf_field_type *type;
1433
1434 type = bt_ctf_field_type_integer_create(size);
1435 if (!type)
1436 return NULL;
1437
1438 if (sign &&
1439 bt_ctf_field_type_integer_set_signed(type, 1))
1440 goto err;
1441
1442 if (hex &&
1443 bt_ctf_field_type_integer_set_base(type, BT_CTF_INTEGER_BASE_HEXADECIMAL))
1444 goto err;
1445
1446#if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
1447 bt_ctf_field_type_set_byte_order(type, BT_CTF_BYTE_ORDER_BIG_ENDIAN);
1448#else
1449 bt_ctf_field_type_set_byte_order(type, BT_CTF_BYTE_ORDER_LITTLE_ENDIAN);
1450#endif
1451
1452 pr2("Created type: INTEGER %d-bit %ssigned %s\n",
1453 size, sign ? "un" : "", hex ? "hex" : "");
1454 return type;
1455
1456err:
1457 bt_ctf_field_type_put(type);
1458 return NULL;
1459}
1460
1461static void ctf_writer__cleanup_data(struct ctf_writer *cw)
1462{
1463 unsigned int i;
1464
1465 for (i = 0; i < ARRAY_SIZE(cw->data.array); i++)
1466 bt_ctf_field_type_put(cw->data.array[i]);
1467}
1468
1469static int ctf_writer__init_data(struct ctf_writer *cw)
1470{
1471#define CREATE_INT_TYPE(type, size, sign, hex) \
1472do { \
1473 (type) = create_int_type(size, sign, hex); \
1474 if (!(type)) \
1475 goto err; \
1476} while (0)
1477
1478 CREATE_INT_TYPE(cw->data.s64, 64, true, false);
1479 CREATE_INT_TYPE(cw->data.u64, 64, false, false);
1480 CREATE_INT_TYPE(cw->data.s32, 32, true, false);
1481 CREATE_INT_TYPE(cw->data.u32, 32, false, false);
1482 CREATE_INT_TYPE(cw->data.u32_hex, 32, false, true);
1483 CREATE_INT_TYPE(cw->data.u64_hex, 64, false, true);
1484
1485 cw->data.string = bt_ctf_field_type_string_create();
1486 if (cw->data.string)
1487 return 0;
1488
1489err:
1490 ctf_writer__cleanup_data(cw);
1491 pr_err("Failed to create data types.\n");
1492 return -1;
1493}
1494
1495static void ctf_writer__cleanup(struct ctf_writer *cw)
1496{
1497 ctf_writer__cleanup_data(cw);
1498
1499 bt_ctf_clock_put(cw->clock);
1500 free_streams(cw);
1501 bt_ctf_stream_class_put(cw->stream_class);
1502 bt_ctf_writer_put(cw->writer);
1503
1504 /* and NULL all the pointers */
1505 memset(cw, 0, sizeof(*cw));
1506}
1507
1508static int ctf_writer__init(struct ctf_writer *cw, const char *path,
1509 struct perf_session *session, bool tod)
1510{
1511 struct bt_ctf_writer *writer;
1512 struct bt_ctf_stream_class *stream_class;
1513 struct bt_ctf_clock *clock;
1514 struct bt_ctf_field_type *pkt_ctx_type;
1515 int ret;
1516
1517 /* CTF writer */
1518 writer = bt_ctf_writer_create(path);
1519 if (!writer)
1520 goto err;
1521
1522 cw->writer = writer;
1523
1524 /* CTF clock */
1525 clock = bt_ctf_clock_create("perf_clock");
1526 if (!clock) {
1527 pr("Failed to create CTF clock.\n");
1528 goto err_cleanup;
1529 }
1530
1531 cw->clock = clock;
1532
1533 if (ctf_writer__setup_clock(cw, session, tod)) {
1534 pr("Failed to setup CTF clock.\n");
1535 goto err_cleanup;
1536 }
1537
1538 /* CTF stream class */
1539 stream_class = bt_ctf_stream_class_create("perf_stream");
1540 if (!stream_class) {
1541 pr("Failed to create CTF stream class.\n");
1542 goto err_cleanup;
1543 }
1544
1545 cw->stream_class = stream_class;
1546
1547 /* CTF clock stream setup */
1548 if (bt_ctf_stream_class_set_clock(stream_class, clock)) {
1549 pr("Failed to assign CTF clock to stream class.\n");
1550 goto err_cleanup;
1551 }
1552
1553 if (ctf_writer__init_data(cw))
1554 goto err_cleanup;
1555
1556 /* Add cpu_id for packet context */
1557 pkt_ctx_type = bt_ctf_stream_class_get_packet_context_type(stream_class);
1558 if (!pkt_ctx_type)
1559 goto err_cleanup;
1560
1561 ret = bt_ctf_field_type_structure_add_field(pkt_ctx_type, cw->data.u32, "cpu_id");
1562 bt_ctf_field_type_put(pkt_ctx_type);
1563 if (ret)
1564 goto err_cleanup;
1565
1566 /* CTF clock writer setup */
1567 if (bt_ctf_writer_add_clock(writer, clock)) {
1568 pr("Failed to assign CTF clock to writer.\n");
1569 goto err_cleanup;
1570 }
1571
1572 return 0;
1573
1574err_cleanup:
1575 ctf_writer__cleanup(cw);
1576err:
1577 pr_err("Failed to setup CTF writer.\n");
1578 return -1;
1579}
1580
1581static int ctf_writer__flush_streams(struct ctf_writer *cw)
1582{
1583 int cpu, ret = 0;
1584
1585 for (cpu = 0; cpu < cw->stream_cnt && !ret; cpu++)
1586 ret = ctf_stream__flush(cw->stream[cpu]);
1587
1588 return ret;
1589}
1590
1591static int convert__config(const char *var, const char *value, void *cb)
1592{
1593 struct convert *c = cb;
1594
1595 if (!strcmp(var, "convert.queue-size"))
1596 return perf_config_u64(&c->queue_size, var, value);
1597
1598 return 0;
1599}
1600
1601int bt_convert__perf2ctf(const char *input, const char *path,
1602 struct perf_data_convert_opts *opts)
1603{
1604 struct perf_session *session;
1605 struct perf_data data = {
1606 .path = input,
1607 .mode = PERF_DATA_MODE_READ,
1608 .force = opts->force,
1609 };
1610 struct convert c = {
1611 .tool = {
1612 .sample = process_sample_event,
1613 .mmap = perf_event__process_mmap,
1614 .mmap2 = perf_event__process_mmap2,
1615 .comm = perf_event__process_comm,
1616 .exit = perf_event__process_exit,
1617 .fork = perf_event__process_fork,
1618 .lost = perf_event__process_lost,
1619 .tracing_data = perf_event__process_tracing_data,
1620 .build_id = perf_event__process_build_id,
1621 .namespaces = perf_event__process_namespaces,
1622 .ordered_events = true,
1623 .ordering_requires_timestamps = true,
1624 },
1625 };
1626 struct ctf_writer *cw = &c.writer;
1627 int err;
1628
1629 if (opts->all) {
1630 c.tool.comm = process_comm_event;
1631 c.tool.exit = process_exit_event;
1632 c.tool.fork = process_fork_event;
1633 c.tool.mmap = process_mmap_event;
1634 c.tool.mmap2 = process_mmap2_event;
1635 }
1636
1637 err = perf_config(convert__config, &c);
1638 if (err)
1639 return err;
1640
1641 err = -1;
1642 /* perf.data session */
1643 session = perf_session__new(&data, &c.tool);
1644 if (IS_ERR(session))
1645 return PTR_ERR(session);
1646
1647 /* CTF writer */
1648 if (ctf_writer__init(cw, path, session, opts->tod))
1649 goto free_session;
1650
1651 if (c.queue_size) {
1652 ordered_events__set_alloc_size(&session->ordered_events,
1653 c.queue_size);
1654 }
1655
1656 /* CTF writer env/clock setup */
1657 if (ctf_writer__setup_env(cw, session))
1658 goto free_writer;
1659
1660 /* CTF events setup */
1661 if (setup_events(cw, session))
1662 goto free_writer;
1663
1664 if (opts->all && setup_non_sample_events(cw, session))
1665 goto free_writer;
1666
1667 if (setup_streams(cw, session))
1668 goto free_writer;
1669
1670 err = perf_session__process_events(session);
1671 if (!err)
1672 err = ctf_writer__flush_streams(cw);
1673 else
1674 pr_err("Error during conversion.\n");
1675
1676 fprintf(stderr,
1677 "[ perf data convert: Converted '%s' into CTF data '%s' ]\n",
1678 data.path, path);
1679
1680 fprintf(stderr,
1681 "[ perf data convert: Converted and wrote %.3f MB (%" PRIu64 " samples",
1682 (double) c.events_size / 1024.0 / 1024.0,
1683 c.events_count);
1684
1685 if (!c.non_sample_count)
1686 fprintf(stderr, ") ]\n");
1687 else
1688 fprintf(stderr, ", %" PRIu64 " non-samples) ]\n", c.non_sample_count);
1689
1690 cleanup_events(session);
1691 perf_session__delete(session);
1692 ctf_writer__cleanup(cw);
1693
1694 return err;
1695
1696free_writer:
1697 ctf_writer__cleanup(cw);
1698free_session:
1699 perf_session__delete(session);
1700 pr_err("Error during conversion setup.\n");
1701 return err;
1702}