projects / deliverable / linux.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
perf evlist: Rename for_each() macros to for_each_entry()
[deliverable/linux.git] / tools / perf / util / data-convert-bt.c
CommitLineData
edbe9817
JO		 1/*
2 * CTF writing support via babeltrace.
3 *
4 * Copyright (C) 2014, Jiri Olsa <jolsa@redhat.com>
5 * Copyright (C) 2014, Sebastian Andrzej Siewior <bigeasy@linutronix.de>
6 *
7 * Released under the GPL v2. (and only v2, not any later version)
8 */
9
10#include <linux/compiler.h>
11#include <babeltrace/ctf-writer/writer.h>
12#include <babeltrace/ctf-writer/clock.h>
13#include <babeltrace/ctf-writer/stream.h>
14#include <babeltrace/ctf-writer/event.h>
15#include <babeltrace/ctf-writer/event-types.h>
16#include <babeltrace/ctf-writer/event-fields.h>
e0a7cce5 17#include <babeltrace/ctf-ir/utils.h>
edbe9817
JO		 18#include <babeltrace/ctf/events.h>
19#include <traceevent/event-parse.h>
20#include "asm/bug.h"
21#include "data-convert-bt.h"
22#include "session.h"
23#include "util.h"
24#include "debug.h"
25#include "tool.h"
26#include "evlist.h"
27#include "evsel.h"
28#include "machine.h"
29
30#define pr_N(n, fmt, ...) \
31 eprintf(n, debug_data_convert, fmt, ##__VA_ARGS__)
32
33#define pr(fmt, ...) pr_N(1, pr_fmt(fmt), ##__VA_ARGS__)
34#define pr2(fmt, ...) pr_N(2, pr_fmt(fmt), ##__VA_ARGS__)
35
36#define pr_time2(t, fmt, ...) pr_time_N(2, debug_data_convert, t, pr_fmt(fmt), ##__VA_ARGS__)
37
38struct evsel_priv {
39 struct bt_ctf_event_class *event_class;
40};
41
90e129ff
SAS		 42#define MAX_CPUS 4096
43
44struct ctf_stream {
45 struct bt_ctf_stream *stream;
46 int cpu;
89e5fa88 47 u32 count;
90e129ff
SAS		 48};
49
edbe9817
JO		 50struct ctf_writer {
51 /* writer primitives */
90e129ff
SAS		 52 struct bt_ctf_writer *writer;
53 struct ctf_stream **stream;
54 int stream_cnt;
55 struct bt_ctf_stream_class *stream_class;
56 struct bt_ctf_clock *clock;
edbe9817
JO		 57
58 /* data types */
59 union {
60 struct {
61 struct bt_ctf_field_type *s64;
62 struct bt_ctf_field_type *u64;
63 struct bt_ctf_field_type *s32;
64 struct bt_ctf_field_type *u32;
65 struct bt_ctf_field_type *string;
26812d46 66 struct bt_ctf_field_type *u32_hex;
edbe9817
JO		 67 struct bt_ctf_field_type *u64_hex;
68 };
69 struct bt_ctf_field_type *array[6];
70 } data;
71};
72
73struct convert {
74 struct perf_tool tool;
75 struct ctf_writer writer;
76
77 u64 events_size;
78 u64 events_count;
8fa46753
JO		 79
80 /* Ordered events configured queue size. */
81 u64 queue_size;
edbe9817
JO		 82};
83
84static int value_set(struct bt_ctf_field_type *type,
85 struct bt_ctf_event *event,
86 const char *name, u64 val)
87{
88 struct bt_ctf_field *field;
89 bool sign = bt_ctf_field_type_integer_get_signed(type);
90 int ret;
91
92 field = bt_ctf_field_create(type);
93 if (!field) {
94 pr_err("failed to create a field %s\n", name);
95 return -1;
96 }
97
98 if (sign) {
99 ret = bt_ctf_field_signed_integer_set_value(field, val);
100 if (ret) {
101 pr_err("failed to set field value %s\n", name);
102 goto err;
103 }
104 } else {
105 ret = bt_ctf_field_unsigned_integer_set_value(field, val);
106 if (ret) {
107 pr_err("failed to set field value %s\n", name);
108 goto err;
109 }
110 }
111
112 ret = bt_ctf_event_set_payload(event, name, field);
113 if (ret) {
114 pr_err("failed to set payload %s\n", name);
115 goto err;
116 }
117
118 pr2(" SET [%s = %" PRIu64 "]\n", name, val);
119
120err:
121 bt_ctf_field_put(field);
122 return ret;
123}
124
125#define __FUNC_VALUE_SET(_name, _val_type) \
126static __maybe_unused int value_set_##_name(struct ctf_writer *cw, \
127 struct bt_ctf_event *event, \
128 const char *name, \
129 _val_type val) \
130{ \
131 struct bt_ctf_field_type *type = cw->data._name; \
132 return value_set(type, event, name, (u64) val); \
133}
134
135#define FUNC_VALUE_SET(_name) __FUNC_VALUE_SET(_name, _name)
136
137FUNC_VALUE_SET(s32)
138FUNC_VALUE_SET(u32)
139FUNC_VALUE_SET(s64)
140FUNC_VALUE_SET(u64)
141__FUNC_VALUE_SET(u64_hex, u64)
142
69364727
SAS		 143static struct bt_ctf_field_type*
144get_tracepoint_field_type(struct ctf_writer *cw, struct format_field *field)
145{
146 unsigned long flags = field->flags;
147
148 if (flags & FIELD_IS_STRING)
149 return cw->data.string;
150
151 if (!(flags & FIELD_IS_SIGNED)) {
152 /* unsigned long are mostly pointers */
153 if (flags & FIELD_IS_LONG || flags & FIELD_IS_POINTER)
154 return cw->data.u64_hex;
155 }
156
157 if (flags & FIELD_IS_SIGNED) {
158 if (field->size == 8)
159 return cw->data.s64;
160 else
161 return cw->data.s32;
162 }
163
164 if (field->size == 8)
165 return cw->data.u64;
166 else
167 return cw->data.u32;
168}
169
d4ae4213
WN		 170static unsigned long long adjust_signedness(unsigned long long value_int, int size)
171{
172 unsigned long long value_mask;
173
174 /*
175 * value_mask = (1 << (size * 8 - 1)) - 1.
176 * Directly set value_mask for code readers.
177 */
178 switch (size) {
179 case 1:
180 value_mask = 0x7fULL;
181 break;
182 case 2:
183 value_mask = 0x7fffULL;
184 break;
185 case 4:
186 value_mask = 0x7fffffffULL;
187 break;
188 case 8:
189 /*
190 * For 64 bit value, return it self. There is no need
191 * to fill high bit.
192 */
193 /* Fall through */
194 default:
195 /* BUG! */
196 return value_int;
197 }
198
199 /* If it is a positive value, don't adjust. */
200 if ((value_int & (~0ULL - value_mask)) == 0)
201 return value_int;
202
203 /* Fill upper part of value_int with 1 to make it a negative long long. */
204 return (value_int & value_mask) | ~value_mask;
205}
206
5ea5888b
WN		 207static int string_set_value(struct bt_ctf_field *field, const char *string)
208{
209 char *buffer = NULL;
210 size_t len = strlen(string), i, p;
211 int err;
212
213 for (i = p = 0; i < len; i++, p++) {
214 if (isprint(string[i])) {
215 if (!buffer)
216 continue;
217 buffer[p] = string[i];
218 } else {
219 char numstr[5];
220
221 snprintf(numstr, sizeof(numstr), "\\x%02x",
222 (unsigned int)(string[i]) & 0xff);
223
224 if (!buffer) {
225 buffer = zalloc(i + (len - i) * 4 + 2);
226 if (!buffer) {
227 pr_err("failed to set unprintable string '%s'\n", string);
228 return bt_ctf_field_string_set_value(field, "UNPRINTABLE-STRING");
229 }
230 if (i > 0)
231 strncpy(buffer, string, i);
232 }
233 strncat(buffer + p, numstr, 4);
234 p += 3;
235 }
236 }
237
238 if (!buffer)
239 return bt_ctf_field_string_set_value(field, string);
240 err = bt_ctf_field_string_set_value(field, buffer);
241 free(buffer);
242 return err;
243}
244
69364727
SAS		 245static int add_tracepoint_field_value(struct ctf_writer *cw,
246 struct bt_ctf_event_class *event_class,
247 struct bt_ctf_event *event,
248 struct perf_sample *sample,
249 struct format_field *fmtf)
250{
251 struct bt_ctf_field_type *type;
252 struct bt_ctf_field *array_field;
253 struct bt_ctf_field *field;
254 const char *name = fmtf->name;
255 void *data = sample->raw_data;
69364727
SAS		 256 unsigned long flags = fmtf->flags;
257 unsigned int n_items;
258 unsigned int i;
259 unsigned int offset;
260 unsigned int len;
261 int ret;
262
e0a7cce5 263 name = fmtf->alias;
69364727
SAS		 264 offset = fmtf->offset;
265 len = fmtf->size;
266 if (flags & FIELD_IS_STRING)
267 flags &= ~FIELD_IS_ARRAY;
268
269 if (flags & FIELD_IS_DYNAMIC) {
270 unsigned long long tmp_val;
271
272 tmp_val = pevent_read_number(fmtf->event->pevent,
273 data + offset, len);
274 offset = tmp_val;
275 len = offset >> 16;
276 offset &= 0xffff;
277 }
278
279 if (flags & FIELD_IS_ARRAY) {
280
281 type = bt_ctf_event_class_get_field_by_name(
282 event_class, name);
283 array_field = bt_ctf_field_create(type);
284 bt_ctf_field_type_put(type);
285 if (!array_field) {
286 pr_err("Failed to create array type %s\n", name);
287 return -1;
288 }
289
290 len = fmtf->size / fmtf->arraylen;
291 n_items = fmtf->arraylen;
292 } else {
293 n_items = 1;
294 array_field = NULL;
295 }
296
297 type = get_tracepoint_field_type(cw, fmtf);
298
299 for (i = 0; i < n_items; i++) {
69364727
SAS		 300 if (flags & FIELD_IS_ARRAY)
301 field = bt_ctf_field_array_get_field(array_field, i);
302 else
303 field = bt_ctf_field_create(type);
304
305 if (!field) {
306 pr_err("failed to create a field %s\n", name);
307 return -1;
308 }
309
310 if (flags & FIELD_IS_STRING)
5ea5888b 311 ret = string_set_value(field, data + offset + i * len);
d4ae4213
WN		 312 else {
313 unsigned long long value_int;
314
315 value_int = pevent_read_number(
316 fmtf->event->pevent,
317 data + offset + i * len, len);
318
319 if (!(flags & FIELD_IS_SIGNED))
320 ret = bt_ctf_field_unsigned_integer_set_value(
321 field, value_int);
322 else
323 ret = bt_ctf_field_signed_integer_set_value(
324 field, adjust_signedness(value_int, len));
325 }
326
69364727
SAS		 327 if (ret) {
328 pr_err("failed to set file value %s\n", name);
329 goto err_put_field;
330 }
331 if (!(flags & FIELD_IS_ARRAY)) {
332 ret = bt_ctf_event_set_payload(event, name, field);
333 if (ret) {
334 pr_err("failed to set payload %s\n", name);
335 goto err_put_field;
336 }
337 }
338 bt_ctf_field_put(field);
339 }
340 if (flags & FIELD_IS_ARRAY) {
341 ret = bt_ctf_event_set_payload(event, name, array_field);
342 if (ret) {
343 pr_err("Failed add payload array %s\n", name);
344 return -1;
345 }
346 bt_ctf_field_put(array_field);
347 }
348 return 0;
349
350err_put_field:
351 bt_ctf_field_put(field);
352 return -1;
353}
354
355static int add_tracepoint_fields_values(struct ctf_writer *cw,
356 struct bt_ctf_event_class *event_class,
357 struct bt_ctf_event *event,
358 struct format_field *fields,
359 struct perf_sample *sample)
360{
361 struct format_field *field;
362 int ret;
363
364 for (field = fields; field; field = field->next) {
365 ret = add_tracepoint_field_value(cw, event_class, event, sample,
366 field);
367 if (ret)
368 return -1;
369 }
370 return 0;
371}
372
373static int add_tracepoint_values(struct ctf_writer *cw,
374 struct bt_ctf_event_class *event_class,
375 struct bt_ctf_event *event,
376 struct perf_evsel *evsel,
377 struct perf_sample *sample)
378{
379 struct format_field *common_fields = evsel->tp_format->format.common_fields;
380 struct format_field *fields = evsel->tp_format->format.fields;
381 int ret;
382
383 ret = add_tracepoint_fields_values(cw, event_class, event,
384 common_fields, sample);
385 if (!ret)
386 ret = add_tracepoint_fields_values(cw, event_class, event,
387 fields, sample);
388
389 return ret;
390}
391
6122d57e
WN		 392static int
393add_bpf_output_values(struct bt_ctf_event_class *event_class,
394 struct bt_ctf_event *event,
395 struct perf_sample *sample)
396{
397 struct bt_ctf_field_type *len_type, *seq_type;
398 struct bt_ctf_field *len_field, *seq_field;
399 unsigned int raw_size = sample->raw_size;
400 unsigned int nr_elements = raw_size / sizeof(u32);
401 unsigned int i;
402 int ret;
403
404 if (nr_elements * sizeof(u32) != raw_size)
405 pr_warning("Incorrect raw_size (%u) in bpf output event, skip %lu bytes\n",
406 raw_size, nr_elements * sizeof(u32) - raw_size);
407
408 len_type = bt_ctf_event_class_get_field_by_name(event_class, "raw_len");
409 len_field = bt_ctf_field_create(len_type);
410 if (!len_field) {
411 pr_err("failed to create 'raw_len' for bpf output event\n");
412 ret = -1;
413 goto put_len_type;
414 }
415
416 ret = bt_ctf_field_unsigned_integer_set_value(len_field, nr_elements);
417 if (ret) {
418 pr_err("failed to set field value for raw_len\n");
419 goto put_len_field;
420 }
421 ret = bt_ctf_event_set_payload(event, "raw_len", len_field);
422 if (ret) {
423 pr_err("failed to set payload to raw_len\n");
424 goto put_len_field;
425 }
426
427 seq_type = bt_ctf_event_class_get_field_by_name(event_class, "raw_data");
428 seq_field = bt_ctf_field_create(seq_type);
429 if (!seq_field) {
430 pr_err("failed to create 'raw_data' for bpf output event\n");
431 ret = -1;
432 goto put_seq_type;
433 }
434
435 ret = bt_ctf_field_sequence_set_length(seq_field, len_field);
436 if (ret) {
437 pr_err("failed to set length of 'raw_data'\n");
438 goto put_seq_field;
439 }
440
441 for (i = 0; i < nr_elements; i++) {
442 struct bt_ctf_field *elem_field =
443 bt_ctf_field_sequence_get_field(seq_field, i);
444
445 ret = bt_ctf_field_unsigned_integer_set_value(elem_field,
446 ((u32 *)(sample->raw_data))[i]);
447
448 bt_ctf_field_put(elem_field);
449 if (ret) {
450 pr_err("failed to set raw_data[%d]\n", i);
451 goto put_seq_field;
452 }
453 }
454
455 ret = bt_ctf_event_set_payload(event, "raw_data", seq_field);
456 if (ret)
457 pr_err("failed to set payload for raw_data\n");
458
459put_seq_field:
460 bt_ctf_field_put(seq_field);
461put_seq_type:
462 bt_ctf_field_type_put(seq_type);
463put_len_field:
464 bt_ctf_field_put(len_field);
465put_len_type:
466 bt_ctf_field_type_put(len_type);
467 return ret;
468}
469
edbe9817
JO		 470static int add_generic_values(struct ctf_writer *cw,
471 struct bt_ctf_event *event,
472 struct perf_evsel *evsel,
473 struct perf_sample *sample)
474{
475 u64 type = evsel->attr.sample_type;
476 int ret;
477
478 /*
479 * missing:
480 * PERF_SAMPLE_TIME - not needed as we have it in
481 * ctf event header
482 * PERF_SAMPLE_READ - TODO
483 * PERF_SAMPLE_CALLCHAIN - TODO
484 * PERF_SAMPLE_RAW - tracepoint fields are handled separately
485 * PERF_SAMPLE_BRANCH_STACK - TODO
486 * PERF_SAMPLE_REGS_USER - TODO
487 * PERF_SAMPLE_STACK_USER - TODO
488 */
489
490 if (type & PERF_SAMPLE_IP) {
54cf776a 491 ret = value_set_u64_hex(cw, event, "perf_ip", sample->ip);
edbe9817
JO		 492 if (ret)
493 return -1;
494 }
495
496 if (type & PERF_SAMPLE_TID) {
54cf776a 497 ret = value_set_s32(cw, event, "perf_tid", sample->tid);
edbe9817
JO		 498 if (ret)
499 return -1;
500
54cf776a 501 ret = value_set_s32(cw, event, "perf_pid", sample->pid);
edbe9817
JO		 502 if (ret)
503 return -1;
504 }
505
506 if ((type & PERF_SAMPLE_ID) ||
507 (type & PERF_SAMPLE_IDENTIFIER)) {
54cf776a 508 ret = value_set_u64(cw, event, "perf_id", sample->id);
edbe9817
JO		 509 if (ret)
510 return -1;
511 }
512
513 if (type & PERF_SAMPLE_STREAM_ID) {
54cf776a 514 ret = value_set_u64(cw, event, "perf_stream_id", sample->stream_id);
edbe9817
JO		 515 if (ret)
516 return -1;
517 }
518
edbe9817 519 if (type & PERF_SAMPLE_PERIOD) {
54cf776a 520 ret = value_set_u64(cw, event, "perf_period", sample->period);
edbe9817
JO		 521 if (ret)
522 return -1;
523 }
524
525 if (type & PERF_SAMPLE_WEIGHT) {
54cf776a 526 ret = value_set_u64(cw, event, "perf_weight", sample->weight);
edbe9817
JO		 527 if (ret)
528 return -1;
529 }
530
531 if (type & PERF_SAMPLE_DATA_SRC) {
54cf776a
SAS		 532 ret = value_set_u64(cw, event, "perf_data_src",
533 sample->data_src);
edbe9817
JO		 534 if (ret)
535 return -1;
536 }
537
538 if (type & PERF_SAMPLE_TRANSACTION) {
54cf776a
SAS		 539 ret = value_set_u64(cw, event, "perf_transaction",
540 sample->transaction);
edbe9817
JO		 541 if (ret)
542 return -1;
543 }
544
545 return 0;
546}
547
90e129ff
SAS		 548static int ctf_stream__flush(struct ctf_stream *cs)
549{
550 int err = 0;
551
552 if (cs) {
553 err = bt_ctf_stream_flush(cs->stream);
554 if (err)
555 pr_err("CTF stream %d flush failed\n", cs->cpu);
556
89e5fa88
JO		 557 pr("Flush stream for cpu %d (%u samples)\n",
558 cs->cpu, cs->count);
559
560 cs->count = 0;
90e129ff
SAS		 561 }
562
563 return err;
564}
565
566static struct ctf_stream *ctf_stream__create(struct ctf_writer *cw, int cpu)
567{
568 struct ctf_stream *cs;
569 struct bt_ctf_field *pkt_ctx = NULL;
570 struct bt_ctf_field *cpu_field = NULL;
571 struct bt_ctf_stream *stream = NULL;
572 int ret;
573
574 cs = zalloc(sizeof(*cs));
575 if (!cs) {
576 pr_err("Failed to allocate ctf stream\n");
577 return NULL;
578 }
579
580 stream = bt_ctf_writer_create_stream(cw->writer, cw->stream_class);
581 if (!stream) {
582 pr_err("Failed to create CTF stream\n");
583 goto out;
584 }
585
586 pkt_ctx = bt_ctf_stream_get_packet_context(stream);
587 if (!pkt_ctx) {
588 pr_err("Failed to obtain packet context\n");
589 goto out;
590 }
591
592 cpu_field = bt_ctf_field_structure_get_field(pkt_ctx, "cpu_id");
593 bt_ctf_field_put(pkt_ctx);
594 if (!cpu_field) {
595 pr_err("Failed to obtain cpu field\n");
596 goto out;
597 }
598
599 ret = bt_ctf_field_unsigned_integer_set_value(cpu_field, (u32) cpu);
600 if (ret) {
601 pr_err("Failed to update CPU number\n");
602 goto out;
603 }
604
605 bt_ctf_field_put(cpu_field);
606
607 cs->cpu = cpu;
608 cs->stream = stream;
609 return cs;
610
611out:
612 if (cpu_field)
613 bt_ctf_field_put(cpu_field);
614 if (stream)
615 bt_ctf_stream_put(stream);
616
617 free(cs);
618 return NULL;
619}
620
621static void ctf_stream__delete(struct ctf_stream *cs)
622{
623 if (cs) {
624 bt_ctf_stream_put(cs->stream);
625 free(cs);
626 }
627}
628
629static struct ctf_stream *ctf_stream(struct ctf_writer *cw, int cpu)
630{
631 struct ctf_stream *cs = cw->stream[cpu];
632
633 if (!cs) {
634 cs = ctf_stream__create(cw, cpu);
635 cw->stream[cpu] = cs;
636 }
637
638 return cs;
639}
640
641static int get_sample_cpu(struct ctf_writer *cw, struct perf_sample *sample,
642 struct perf_evsel *evsel)
643{
644 int cpu = 0;
645
646 if (evsel->attr.sample_type & PERF_SAMPLE_CPU)
647 cpu = sample->cpu;
648
649 if (cpu > cw->stream_cnt) {
650 pr_err("Event was recorded for CPU %d, limit is at %d.\n",
651 cpu, cw->stream_cnt);
652 cpu = 0;
653 }
654
655 return cpu;
656}
657
89e5fa88
JO		 658#define STREAM_FLUSH_COUNT 100000
659
660/*
661 * Currently we have no other way to determine the
662 * time for the stream flush other than keep track
663 * of the number of events and check it against
664 * threshold.
665 */
666static bool is_flush_needed(struct ctf_stream *cs)
667{
668 return cs->count >= STREAM_FLUSH_COUNT;
669}
670
edbe9817 671static int process_sample_event(struct perf_tool *tool,
b8f8eb84 672 union perf_event *_event,
edbe9817
JO		 673 struct perf_sample *sample,
674 struct perf_evsel *evsel,
675 struct machine *machine __maybe_unused)
676{
677 struct convert *c = container_of(tool, struct convert, tool);
678 struct evsel_priv *priv = evsel->priv;
679 struct ctf_writer *cw = &c->writer;
90e129ff 680 struct ctf_stream *cs;
edbe9817
JO		 681 struct bt_ctf_event_class *event_class;
682 struct bt_ctf_event *event;
683 int ret;
684
685 if (WARN_ONCE(!priv, "Failed to setup all events.\n"))
686 return 0;
687
688 event_class = priv->event_class;
689
690 /* update stats */
691 c->events_count++;
692 c->events_size += _event->header.size;
693
694 pr_time2(sample->time, "sample %" PRIu64 "\n", c->events_count);
695
696 event = bt_ctf_event_create(event_class);
697 if (!event) {
698 pr_err("Failed to create an CTF event\n");
699 return -1;
700 }
701
702 bt_ctf_clock_set_time(cw->clock, sample->time);
703
704 ret = add_generic_values(cw, event, evsel, sample);
705 if (ret)
706 return -1;
707
69364727
SAS		 708 if (evsel->attr.type == PERF_TYPE_TRACEPOINT) {
709 ret = add_tracepoint_values(cw, event_class, event,
710 evsel, sample);
711 if (ret)
712 return -1;
713 }
714
6122d57e
WN		 715 if (perf_evsel__is_bpf_output(evsel)) {
716 ret = add_bpf_output_values(event_class, event, sample);
717 if (ret)
718 return -1;
719 }
720
90e129ff 721 cs = ctf_stream(cw, get_sample_cpu(cw, sample, evsel));
89e5fa88
JO		 722 if (cs) {
723 if (is_flush_needed(cs))
724 ctf_stream__flush(cs);
725
726 cs->count++;
90e129ff 727 bt_ctf_stream_append_event(cs->stream, event);
89e5fa88 728 }
90e129ff 729
edbe9817 730 bt_ctf_event_put(event);
90e129ff 731 return cs ? 0 : -1;
edbe9817
JO		 732}
733
e0a7cce5
WN		 734/* If dup < 0, add a prefix. Else, add _dupl_X suffix. */
735static char *change_name(char *name, char *orig_name, int dup)
736{
737 char *new_name = NULL;
738 size_t len;
739
740 if (!name)
741 name = orig_name;
742
743 if (dup >= 10)
744 goto out;
745 /*
746 * Add '_' prefix to potential keywork. According to
747 * Mathieu Desnoyers (https://lkml.org/lkml/2015/1/23/652),
748 * futher CTF spec updating may require us to use '$'.
749 */
750 if (dup < 0)
751 len = strlen(name) + sizeof("_");
752 else
753 len = strlen(orig_name) + sizeof("_dupl_X");
754
755 new_name = malloc(len);
756 if (!new_name)
757 goto out;
758
759 if (dup < 0)
760 snprintf(new_name, len, "_%s", name);
761 else
762 snprintf(new_name, len, "%s_dupl_%d", orig_name, dup);
763
764out:
765 if (name != orig_name)
766 free(name);
767 return new_name;
768}
769
770static int event_class_add_field(struct bt_ctf_event_class *event_class,
771 struct bt_ctf_field_type *type,
772 struct format_field *field)
773{
774 struct bt_ctf_field_type *t = NULL;
775 char *name;
776 int dup = 1;
777 int ret;
778
779 /* alias was already assigned */
780 if (field->alias != field->name)
781 return bt_ctf_event_class_add_field(event_class, type,
782 (char *)field->alias);
783
784 name = field->name;
785
786 /* If 'name' is a keywork, add prefix. */
787 if (bt_ctf_validate_identifier(name))
788 name = change_name(name, field->name, -1);
789
790 if (!name) {
791 pr_err("Failed to fix invalid identifier.");
792 return -1;
793 }
794 while ((t = bt_ctf_event_class_get_field_by_name(event_class, name))) {
795 bt_ctf_field_type_put(t);
796 name = change_name(name, field->name, dup++);
797 if (!name) {
798 pr_err("Failed to create dup name for '%s'\n", field->name);
799 return -1;
800 }
801 }
802
803 ret = bt_ctf_event_class_add_field(event_class, type, name);
804 if (!ret)
805 field->alias = name;
806
807 return ret;
808}
809
69364727
SAS		 810static int add_tracepoint_fields_types(struct ctf_writer *cw,
811 struct format_field *fields,
812 struct bt_ctf_event_class *event_class)
813{
814 struct format_field *field;
815 int ret;
816
817 for (field = fields; field; field = field->next) {
818 struct bt_ctf_field_type *type;
819 unsigned long flags = field->flags;
820
821 pr2(" field '%s'\n", field->name);
822
823 type = get_tracepoint_field_type(cw, field);
824 if (!type)
825 return -1;
826
827 /*
828 * A string is an array of chars. For this we use the string
829 * type and don't care that it is an array. What we don't
830 * support is an array of strings.
831 */
832 if (flags & FIELD_IS_STRING)
833 flags &= ~FIELD_IS_ARRAY;
834
835 if (flags & FIELD_IS_ARRAY)
836 type = bt_ctf_field_type_array_create(type, field->arraylen);
837
e0a7cce5 838 ret = event_class_add_field(event_class, type, field);
69364727
SAS		 839
840 if (flags & FIELD_IS_ARRAY)
841 bt_ctf_field_type_put(type);
842
843 if (ret) {
e0a7cce5
WN		 844 pr_err("Failed to add field '%s': %d\n",
845 field->name, ret);
69364727
SAS		 846 return -1;
847 }
848 }
849
850 return 0;
851}
852
853static int add_tracepoint_types(struct ctf_writer *cw,
854 struct perf_evsel *evsel,
855 struct bt_ctf_event_class *class)
856{
857 struct format_field *common_fields = evsel->tp_format->format.common_fields;
858 struct format_field *fields = evsel->tp_format->format.fields;
859 int ret;
860
861 ret = add_tracepoint_fields_types(cw, common_fields, class);
862 if (!ret)
863 ret = add_tracepoint_fields_types(cw, fields, class);
864
865 return ret;
866}
867
6122d57e
WN		 868static int add_bpf_output_types(struct ctf_writer *cw,
869 struct bt_ctf_event_class *class)
870{
871 struct bt_ctf_field_type *len_type = cw->data.u32;
872 struct bt_ctf_field_type *seq_base_type = cw->data.u32_hex;
873 struct bt_ctf_field_type *seq_type;
874 int ret;
875
876 ret = bt_ctf_event_class_add_field(class, len_type, "raw_len");
877 if (ret)
878 return ret;
879
880 seq_type = bt_ctf_field_type_sequence_create(seq_base_type, "raw_len");
881 if (!seq_type)
882 return -1;
883
884 return bt_ctf_event_class_add_field(class, seq_type, "raw_data");
885}
886
edbe9817
JO		 887static int add_generic_types(struct ctf_writer *cw, struct perf_evsel *evsel,
888 struct bt_ctf_event_class *event_class)
889{
890 u64 type = evsel->attr.sample_type;
891
892 /*
893 * missing:
894 * PERF_SAMPLE_TIME - not needed as we have it in
895 * ctf event header
896 * PERF_SAMPLE_READ - TODO
897 * PERF_SAMPLE_CALLCHAIN - TODO
6122d57e
WN		 898 * PERF_SAMPLE_RAW - tracepoint fields and BPF output
899 * are handled separately
edbe9817
JO		 900 * PERF_SAMPLE_BRANCH_STACK - TODO
901 * PERF_SAMPLE_REGS_USER - TODO
902 * PERF_SAMPLE_STACK_USER - TODO
903 */
904
905#define ADD_FIELD(cl, t, n) \
906 do { \
907 pr2(" field '%s'\n", n); \
908 if (bt_ctf_event_class_add_field(cl, t, n)) { \
e0a7cce5 909 pr_err("Failed to add field '%s';\n", n); \
edbe9817
JO		 910 return -1; \
911 } \
912 } while (0)
913
914 if (type & PERF_SAMPLE_IP)
54cf776a 915 ADD_FIELD(event_class, cw->data.u64_hex, "perf_ip");
edbe9817
JO		 916
917 if (type & PERF_SAMPLE_TID) {
54cf776a
SAS		 918 ADD_FIELD(event_class, cw->data.s32, "perf_tid");
919 ADD_FIELD(event_class, cw->data.s32, "perf_pid");
edbe9817
JO		 920 }
921
922 if ((type & PERF_SAMPLE_ID) ||
923 (type & PERF_SAMPLE_IDENTIFIER))
54cf776a 924 ADD_FIELD(event_class, cw->data.u64, "perf_id");
edbe9817
JO		 925
926 if (type & PERF_SAMPLE_STREAM_ID)
54cf776a 927 ADD_FIELD(event_class, cw->data.u64, "perf_stream_id");
edbe9817 928
edbe9817 929 if (type & PERF_SAMPLE_PERIOD)
54cf776a 930 ADD_FIELD(event_class, cw->data.u64, "perf_period");
edbe9817
JO		 931
932 if (type & PERF_SAMPLE_WEIGHT)
54cf776a 933 ADD_FIELD(event_class, cw->data.u64, "perf_weight");
edbe9817
JO		 934
935 if (type & PERF_SAMPLE_DATA_SRC)
54cf776a 936 ADD_FIELD(event_class, cw->data.u64, "perf_data_src");
edbe9817
JO		 937
938 if (type & PERF_SAMPLE_TRANSACTION)
54cf776a 939 ADD_FIELD(event_class, cw->data.u64, "perf_transaction");
edbe9817
JO		 940
941#undef ADD_FIELD
942 return 0;
943}
944
945static int add_event(struct ctf_writer *cw, struct perf_evsel *evsel)
946{
947 struct bt_ctf_event_class *event_class;
948 struct evsel_priv *priv;
949 const char *name = perf_evsel__name(evsel);
950 int ret;
951
952 pr("Adding event '%s' (type %d)\n", name, evsel->attr.type);
953
954 event_class = bt_ctf_event_class_create(name);
955 if (!event_class)
956 return -1;
957
958 ret = add_generic_types(cw, evsel, event_class);
959 if (ret)
960 goto err;
961
69364727
SAS		 962 if (evsel->attr.type == PERF_TYPE_TRACEPOINT) {
963 ret = add_tracepoint_types(cw, evsel, event_class);
964 if (ret)
965 goto err;
966 }
967
6122d57e
WN		 968 if (perf_evsel__is_bpf_output(evsel)) {
969 ret = add_bpf_output_types(cw, event_class);
970 if (ret)
971 goto err;
972 }
973
edbe9817
JO		 974 ret = bt_ctf_stream_class_add_event_class(cw->stream_class, event_class);
975 if (ret) {
976 pr("Failed to add event class into stream.\n");
977 goto err;
978 }
979
980 priv = malloc(sizeof(*priv));
981 if (!priv)
982 goto err;
983
984 priv->event_class = event_class;
985 evsel->priv = priv;
986 return 0;
987
988err:
989 bt_ctf_event_class_put(event_class);
990 pr_err("Failed to add event '%s'.\n", name);
991 return -1;
992}
993
994static int setup_events(struct ctf_writer *cw, struct perf_session *session)
995{
996 struct perf_evlist *evlist = session->evlist;
997 struct perf_evsel *evsel;
998 int ret;
999
e5cadb93 1000 evlist__for_each_entry(evlist, evsel) {
edbe9817
JO		 1001 ret = add_event(cw, evsel);
1002 if (ret)
1003 return ret;
1004 }
1005 return 0;
1006}
1007
5141d735
WN		 1008static void cleanup_events(struct perf_session *session)
1009{
1010 struct perf_evlist *evlist = session->evlist;
1011 struct perf_evsel *evsel;
1012
e5cadb93 1013 evlist__for_each_entry(evlist, evsel) {
5141d735
WN		 1014 struct evsel_priv *priv;
1015
1016 priv = evsel->priv;
1017 bt_ctf_event_class_put(priv->event_class);
1018 zfree(&evsel->priv);
1019 }
1020
1021 perf_evlist__delete(evlist);
1022 session->evlist = NULL;
1023}
1024
90e129ff
SAS		 1025static int setup_streams(struct ctf_writer *cw, struct perf_session *session)
1026{
1027 struct ctf_stream **stream;
1028 struct perf_header *ph = &session->header;
1029 int ncpus;
1030
1031 /*
1032 * Try to get the number of cpus used in the data file,
1033 * if not present fallback to the MAX_CPUS.
1034 */
1035 ncpus = ph->env.nr_cpus_avail ?: MAX_CPUS;
1036
1037 stream = zalloc(sizeof(*stream) * ncpus);
1038 if (!stream) {
1039 pr_err("Failed to allocate streams.\n");
1040 return -ENOMEM;
1041 }
1042
1043 cw->stream = stream;
1044 cw->stream_cnt = ncpus;
1045 return 0;
1046}
1047
1048static void free_streams(struct ctf_writer *cw)
1049{
1050 int cpu;
1051
1052 for (cpu = 0; cpu < cw->stream_cnt; cpu++)
1053 ctf_stream__delete(cw->stream[cpu]);
1054
1055 free(cw->stream);
1056}
1057
edbe9817
JO		 1058static int ctf_writer__setup_env(struct ctf_writer *cw,
1059 struct perf_session *session)
1060{
1061 struct perf_header *header = &session->header;
1062 struct bt_ctf_writer *writer = cw->writer;
1063
1064#define ADD(__n, __v) \
1065do { \
1066 if (bt_ctf_writer_add_environment_field(writer, __n, __v)) \
1067 return -1; \
1068} while (0)
1069
1070 ADD("host", header->env.hostname);
1071 ADD("sysname", "Linux");
1072 ADD("release", header->env.os_release);
1073 ADD("version", header->env.version);
1074 ADD("machine", header->env.arch);
1075 ADD("domain", "kernel");
1076 ADD("tracer_name", "perf");
1077
1078#undef ADD
1079 return 0;
1080}
1081
1082static int ctf_writer__setup_clock(struct ctf_writer *cw)
1083{
1084 struct bt_ctf_clock *clock = cw->clock;
1085
1086 bt_ctf_clock_set_description(clock, "perf clock");
1087
1088#define SET(__n, __v) \
1089do { \
1090 if (bt_ctf_clock_set_##__n(clock, __v)) \
1091 return -1; \
1092} while (0)
1093
1094 SET(frequency, 1000000000);
1095 SET(offset_s, 0);
1096 SET(offset, 0);
1097 SET(precision, 10);
1098 SET(is_absolute, 0);
1099
1100#undef SET
1101 return 0;
1102}
1103
1104static struct bt_ctf_field_type *create_int_type(int size, bool sign, bool hex)
1105{
1106 struct bt_ctf_field_type *type;
1107
1108 type = bt_ctf_field_type_integer_create(size);
1109 if (!type)
1110 return NULL;
1111
1112 if (sign &&
1113 bt_ctf_field_type_integer_set_signed(type, 1))
1114 goto err;
1115
1116 if (hex &&
1117 bt_ctf_field_type_integer_set_base(type, BT_CTF_INTEGER_BASE_HEXADECIMAL))
1118 goto err;
1119
f8dd2d5f
WN		 1120#if __BYTE_ORDER == __BIG_ENDIAN
1121 bt_ctf_field_type_set_byte_order(type, BT_CTF_BYTE_ORDER_BIG_ENDIAN);
1122#else
1123 bt_ctf_field_type_set_byte_order(type, BT_CTF_BYTE_ORDER_LITTLE_ENDIAN);
1124#endif
1125
edbe9817
JO		 1126 pr2("Created type: INTEGER %d-bit %ssigned %s\n",
1127 size, sign ? "un" : "", hex ? "hex" : "");
1128 return type;
1129
1130err:
1131 bt_ctf_field_type_put(type);
1132 return NULL;
1133}
1134
1135static void ctf_writer__cleanup_data(struct ctf_writer *cw)
1136{
1137 unsigned int i;
1138
1139 for (i = 0; i < ARRAY_SIZE(cw->data.array); i++)
1140 bt_ctf_field_type_put(cw->data.array[i]);
1141}
1142
1143static int ctf_writer__init_data(struct ctf_writer *cw)
1144{
1145#define CREATE_INT_TYPE(type, size, sign, hex) \
1146do { \
1147 (type) = create_int_type(size, sign, hex); \
1148 if (!(type)) \
1149 goto err; \
1150} while (0)
1151
1152 CREATE_INT_TYPE(cw->data.s64, 64, true, false);
1153 CREATE_INT_TYPE(cw->data.u64, 64, false, false);
1154 CREATE_INT_TYPE(cw->data.s32, 32, true, false);
1155 CREATE_INT_TYPE(cw->data.u32, 32, false, false);
26812d46 1156 CREATE_INT_TYPE(cw->data.u32_hex, 32, false, true);
edbe9817
JO		 1157 CREATE_INT_TYPE(cw->data.u64_hex, 64, false, true);
1158
1159 cw->data.string = bt_ctf_field_type_string_create();
1160 if (cw->data.string)
1161 return 0;
1162
1163err:
1164 ctf_writer__cleanup_data(cw);
1165 pr_err("Failed to create data types.\n");
1166 return -1;
1167}
1168
1169static void ctf_writer__cleanup(struct ctf_writer *cw)
1170{
1171 ctf_writer__cleanup_data(cw);
1172
1173 bt_ctf_clock_put(cw->clock);
90e129ff 1174 free_streams(cw);
edbe9817
JO		 1175 bt_ctf_stream_class_put(cw->stream_class);
1176 bt_ctf_writer_put(cw->writer);
1177
1178 /* and NULL all the pointers */
1179 memset(cw, 0, sizeof(*cw));
1180}
1181
1182static int ctf_writer__init(struct ctf_writer *cw, const char *path)
1183{
1184 struct bt_ctf_writer *writer;
1185 struct bt_ctf_stream_class *stream_class;
edbe9817 1186 struct bt_ctf_clock *clock;
90e129ff
SAS		 1187 struct bt_ctf_field_type *pkt_ctx_type;
1188 int ret;
edbe9817
JO		 1189
1190 /* CTF writer */
1191 writer = bt_ctf_writer_create(path);
1192 if (!writer)
1193 goto err;
1194
1195 cw->writer = writer;
1196
1197 /* CTF clock */
1198 clock = bt_ctf_clock_create("perf_clock");
1199 if (!clock) {
1200 pr("Failed to create CTF clock.\n");
1201 goto err_cleanup;
1202 }
1203
1204 cw->clock = clock;
1205
1206 if (ctf_writer__setup_clock(cw)) {
1207 pr("Failed to setup CTF clock.\n");
1208 goto err_cleanup;
1209 }
1210
1211 /* CTF stream class */
1212 stream_class = bt_ctf_stream_class_create("perf_stream");
1213 if (!stream_class) {
1214 pr("Failed to create CTF stream class.\n");
1215 goto err_cleanup;
1216 }
1217
1218 cw->stream_class = stream_class;
1219
1220 /* CTF clock stream setup */
1221 if (bt_ctf_stream_class_set_clock(stream_class, clock)) {
1222 pr("Failed to assign CTF clock to stream class.\n");
1223 goto err_cleanup;
1224 }
1225
1226 if (ctf_writer__init_data(cw))
1227 goto err_cleanup;
1228
90e129ff
SAS		 1229 /* Add cpu_id for packet context */
1230 pkt_ctx_type = bt_ctf_stream_class_get_packet_context_type(stream_class);
1231 if (!pkt_ctx_type)
edbe9817 1232 goto err_cleanup;
edbe9817 1233
90e129ff
SAS		 1234 ret = bt_ctf_field_type_structure_add_field(pkt_ctx_type, cw->data.u32, "cpu_id");
1235 bt_ctf_field_type_put(pkt_ctx_type);
1236 if (ret)
1237 goto err_cleanup;
edbe9817
JO		 1238
1239 /* CTF clock writer setup */
1240 if (bt_ctf_writer_add_clock(writer, clock)) {
1241 pr("Failed to assign CTF clock to writer.\n");
1242 goto err_cleanup;
1243 }
1244
1245 return 0;
1246
1247err_cleanup:
1248 ctf_writer__cleanup(cw);
1249err:
1250 pr_err("Failed to setup CTF writer.\n");
1251 return -1;
1252}
1253
90e129ff
SAS		 1254static int ctf_writer__flush_streams(struct ctf_writer *cw)
1255{
1256 int cpu, ret = 0;
1257
1258 for (cpu = 0; cpu < cw->stream_cnt && !ret; cpu++)
1259 ret = ctf_stream__flush(cw->stream[cpu]);
1260
1261 return ret;
1262}
1263
8fa46753
JO		 1264static int convert__config(const char *var, const char *value, void *cb)
1265{
1266 struct convert *c = cb;
1267
1268 if (!strcmp(var, "convert.queue-size")) {
1269 c->queue_size = perf_config_u64(var, value);
1270 return 0;
1271 }
1272
b8cbb349 1273 return 0;
8fa46753
JO		 1274}
1275
bd05954b 1276int bt_convert__perf2ctf(const char *input, const char *path, bool force)
edbe9817
JO		 1277{
1278 struct perf_session *session;
1279 struct perf_data_file file = {
1280 .path = input,
1281 .mode = PERF_DATA_MODE_READ,
bd05954b 1282 .force = force,
edbe9817
JO		 1283 };
1284 struct convert c = {
1285 .tool = {
1286 .sample = process_sample_event,
1287 .mmap = perf_event__process_mmap,
1288 .mmap2 = perf_event__process_mmap2,
1289 .comm = perf_event__process_comm,
1290 .exit = perf_event__process_exit,
1291 .fork = perf_event__process_fork,
1292 .lost = perf_event__process_lost,
1293 .tracing_data = perf_event__process_tracing_data,
1294 .build_id = perf_event__process_build_id,
1295 .ordered_events = true,
1296 .ordering_requires_timestamps = true,
1297 },
1298 };
1299 struct ctf_writer *cw = &c.writer;
1300 int err = -1;
1301
8fa46753
JO		 1302 perf_config(convert__config, &c);
1303
edbe9817
JO		 1304 /* CTF writer */
1305 if (ctf_writer__init(cw, path))
1306 return -1;
1307
1308 /* perf.data session */
b7b61cbe 1309 session = perf_session__new(&file, 0, &c.tool);
edbe9817
JO		 1310 if (!session)
1311 goto free_writer;
1312
8fa46753
JO		 1313 if (c.queue_size) {
1314 ordered_events__set_alloc_size(&session->ordered_events,
1315 c.queue_size);
1316 }
1317
edbe9817
JO		 1318 /* CTF writer env/clock setup */
1319 if (ctf_writer__setup_env(cw, session))
1320 goto free_session;
1321
1322 /* CTF events setup */
1323 if (setup_events(cw, session))
1324 goto free_session;
1325
90e129ff
SAS		 1326 if (setup_streams(cw, session))
1327 goto free_session;
1328
b7b61cbe 1329 err = perf_session__process_events(session);
edbe9817 1330 if (!err)
90e129ff 1331 err = ctf_writer__flush_streams(cw);
c2141055
HK		 1332 else
1333 pr_err("Error during conversion.\n");
edbe9817
JO		 1334
1335 fprintf(stderr,
1336 "[ perf data convert: Converted '%s' into CTF data '%s' ]\n",
1337 file.path, path);
1338
1339 fprintf(stderr,
1340 "[ perf data convert: Converted and wrote %.3f MB (%" PRIu64 " samples) ]\n",
1341 (double) c.events_size / 1024.0 / 1024.0,
1342 c.events_count);
1343
5141d735 1344 cleanup_events(session);
edbe9817 1345 perf_session__delete(session);
c2141055 1346 ctf_writer__cleanup(cw);
edbe9817 1347
c2141055
HK		 1348 return err;
1349
1350free_session:
1351 perf_session__delete(session);
edbe9817
JO		 1352free_writer:
1353 ctf_writer__cleanup(cw);
c2141055 1354 pr_err("Error during conversion setup.\n");
edbe9817
JO		 1355 return err;
1356}
Linux kernel - Deliverables
This page took 0.205021 seconds and 5 git commands to generate.